--- /dev/null
+/* ========================================================================
+ * Copyright 1988-2008 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *
+ * ========================================================================
+ */
+
+/*
+ * Program: Mailbox Access routines
+ *
+ * Author: Mark Crispin
+ * Networks and Distributed Computing
+ * Computing & Communications
+ * University of Washington
+ * Administration Building, AG-44
+ * Seattle, WA 98195
+ * Internet: MRC@CAC.Washington.EDU
+ *
+ * Date: 22 November 1989
+ * Last Edited: 13 March 2008
+ */
+
+
+#include <ctype.h>
+#include <stdio.h>
+#include <time.h>
+#include "c-client.h"
+
+char *UW_copyright = "Copyright 1988-2007 University of Washington\n\nLicensed under the Apache License, Version 2.0 (the \"License\");\nyou may not use this file except in compliance with the License.\nYou may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n";
+\f
+/* c-client global data */
+
+ /* version of this library */
+static char *mailcclientversion = CCLIENTVERSION;
+ /* list of mail drivers */
+static DRIVER *maildrivers = NIL;
+ /* list of authenticators */
+static AUTHENTICATOR *mailauthenticators = NIL;
+ /* SSL driver pointer */
+static NETDRIVER *mailssldriver = NIL;
+ /* pointer to alternate gets function */
+static mailgets_t mailgets = NIL;
+ /* pointer to read progress function */
+static readprogress_t mailreadprogress = NIL;
+ /* mail cache manipulation function */
+static mailcache_t mailcache = mm_cache;
+ /* RFC-822 output generator */
+static rfc822out_t mail822out = NIL;
+ /* RFC-822 output generator (new style) */
+static rfc822outfull_t mail822outfull = NIL;
+ /* SMTP verbose callback */
+static smtpverbose_t mailsmtpverbose = mm_dlog;
+ /* proxy copy routine */
+static mailproxycopy_t mailproxycopy = NIL;
+ /* RFC-822 external line parse */
+static parseline_t mailparseline = NIL;
+ /* RFC-822 external phrase parser */
+static parsephrase_t mailparsephrase = NIL;
+static kinit_t mailkinit = NIL; /* application kinit callback */
+ /* note network sent command */
+static sendcommand_t mailsendcommand = NIL;
+ /* newsrc file name decision function */
+static newsrcquery_t mailnewsrcquery = NIL;
+ /* ACL results callback */
+static getacl_t mailaclresults = NIL;
+ /* list rights results callback */
+static listrights_t maillistrightsresults = NIL;
+ /* my rights results callback */
+static myrights_t mailmyrightsresults = NIL;
+ /* quota results callback */
+static quota_t mailquotaresults = NIL;
+ /* quota root results callback */
+static quotaroot_t mailquotarootresults = NIL;
+ /* sorted results callback */
+static sortresults_t mailsortresults = NIL;
+ /* threaded results callback */
+static threadresults_t mailthreadresults = NIL;
+ /* COPY UID results */
+static copyuid_t mailcopyuid = NIL;
+ /* APPEND UID results */
+static appenduid_t mailappenduid = NIL;
+ /* free elt extra stuff callback */
+static freeeltsparep_t mailfreeeltsparep = NIL;
+ /* free envelope extra stuff callback */
+static freeenvelopesparep_t mailfreeenvelopesparep = NIL;
+ /* free body extra stuff callback */
+static freebodysparep_t mailfreebodysparep = NIL;
+ /* free stream extra stuff callback */
+static freestreamsparep_t mailfreestreamsparep = NIL;
+ /* SSL start routine */
+static sslstart_t mailsslstart = NIL;
+ /* SSL certificate query */
+static sslcertificatequery_t mailsslcertificatequery = NIL;
+ /* SSL client certificate */
+static sslclientcert_t mailsslclientcert = NIL;
+ /* SSL client private key */
+static sslclientkey_t mailsslclientkey = NIL;
+ /* SSL failure notify */
+static sslfailure_t mailsslfailure = NIL;
+ /* snarf interval */
+static long mailsnarfinterval = 60;
+ /* snarf preservation */
+static long mailsnarfpreserve = NIL;
+ /* newsrc name uses canonical host */
+static long mailnewsrccanon = LONGT;
+\f
+ /* supported threaders */
+static THREADER mailthreadordsub = {
+ "ORDEREDSUBJECT",mail_thread_orderedsubject,NIL
+};
+static THREADER mailthreadlist = {
+ "REFERENCES",mail_thread_references,&mailthreadordsub
+};
+
+ /* server name */
+static char *servicename = "unknown";
+ /* server externally-set authentication ID */
+static char *externalauthid = NIL;
+static int expungeatping = T; /* mail_ping() may call mm_expunged() */
+static int trysslfirst = NIL; /* always try SSL first */
+static int notimezones = NIL; /* write timezones in "From " header */
+static int trustdns = T; /* do DNS canonicalization */
+static int saslusesptrname = T; /* SASL uses name from DNS PTR lookup */
+ /* trustdns also must be set */
+static int debugsensitive = NIL;/* debug telemetry includes sensitive data */
+\f
+/* Default mail cache handler
+ * Accepts: pointer to cache handle
+ * message number
+ * caching function
+ * Returns: cache data
+ */
+
+void *mm_cache (MAILSTREAM *stream,unsigned long msgno,long op)
+{
+ size_t n;
+ void *ret = NIL;
+ unsigned long i;
+ switch ((int) op) { /* what function? */
+ case CH_INIT: /* initialize cache */
+ if (stream->cache) { /* flush old cache contents */
+ while (stream->cachesize) {
+ mm_cache (stream,stream->cachesize,CH_FREE);
+ mm_cache (stream,stream->cachesize--,CH_FREESORTCACHE);
+ }
+ fs_give ((void **) &stream->cache);
+ fs_give ((void **) &stream->sc);
+ stream->nmsgs = 0; /* can't have any messages now */
+ }
+ break;
+ case CH_SIZE: /* (re-)size the cache */
+ if (!stream->cache) { /* have a cache already? */
+ /* no, create new cache */
+ n = (stream->cachesize = msgno + CACHEINCREMENT) * sizeof (void *);
+ stream->cache = (MESSAGECACHE **) memset (fs_get (n),0,n);
+ stream->sc = (SORTCACHE **) memset (fs_get (n),0,n);
+ }
+ /* is existing cache size large neough */
+ else if (msgno > stream->cachesize) {
+ i = stream->cachesize; /* remember old size */
+ n = (stream->cachesize = msgno + CACHEINCREMENT) * sizeof (void *);
+ fs_resize ((void **) &stream->cache,n);
+ fs_resize ((void **) &stream->sc,n);
+ while (i < stream->cachesize) {
+ stream->cache[i] = NIL;
+ stream->sc[i++] = NIL;
+ }
+ }
+ break;
+\f
+ case CH_MAKEELT: /* return elt, make if necessary */
+ if (!stream->cache[msgno - 1])
+ stream->cache[msgno - 1] = mail_new_cache_elt (msgno);
+ /* falls through */
+ case CH_ELT: /* return elt */
+ ret = (void *) stream->cache[msgno - 1];
+ break;
+ case CH_SORTCACHE: /* return sortcache entry, make if needed */
+ if (!stream->sc[msgno - 1]) stream->sc[msgno - 1] =
+ (SORTCACHE *) memset (fs_get (sizeof (SORTCACHE)),0,sizeof (SORTCACHE));
+ ret = (void *) stream->sc[msgno - 1];
+ break;
+ case CH_FREE: /* free elt */
+ mail_free_elt (&stream->cache[msgno - 1]);
+ break;
+ case CH_FREESORTCACHE:
+ if (stream->sc[msgno - 1]) {
+ if (stream->sc[msgno - 1]->from)
+ fs_give ((void **) &stream->sc[msgno - 1]->from);
+ if (stream->sc[msgno - 1]->to)
+ fs_give ((void **) &stream->sc[msgno - 1]->to);
+ if (stream->sc[msgno - 1]->cc)
+ fs_give ((void **) &stream->sc[msgno - 1]->cc);
+ if (stream->sc[msgno - 1]->subject)
+ fs_give ((void **) &stream->sc[msgno - 1]->subject);
+ if (stream->sc[msgno - 1]->unique &&
+ (stream->sc[msgno - 1]->unique != stream->sc[msgno - 1]->message_id))
+ fs_give ((void **) &stream->sc[msgno - 1]->unique);
+ if (stream->sc[msgno - 1]->message_id)
+ fs_give ((void **) &stream->sc[msgno - 1]->message_id);
+ if (stream->sc[msgno - 1]->references)
+ mail_free_stringlist (&stream->sc[msgno - 1]->references);
+ fs_give ((void **) &stream->sc[msgno - 1]);
+ }
+ break;
+ case CH_EXPUNGE: /* expunge cache slot */
+ for (i = msgno - 1; msgno < stream->nmsgs; i++,msgno++) {
+ if (stream->cache[i] = stream->cache[msgno])
+ stream->cache[i]->msgno = msgno;
+ stream->sc[i] = stream->sc[msgno];
+ }
+ stream->cache[i] = NIL; /* top of cache goes away */
+ stream->sc[i] = NIL;
+ break;
+ default:
+ fatal ("Bad mm_cache op");
+ break;
+ }
+ return ret;
+}
+\f
+/* Dummy string driver for complete in-memory strings */
+
+static void mail_string_init (STRING *s,void *data,unsigned long size);
+static char mail_string_next (STRING *s);
+static void mail_string_setpos (STRING *s,unsigned long i);
+
+STRINGDRIVER mail_string = {
+ mail_string_init, /* initialize string structure */
+ mail_string_next, /* get next byte in string structure */
+ mail_string_setpos /* set position in string structure */
+};
+
+
+/* Initialize mail string structure for in-memory string
+ * Accepts: string structure
+ * pointer to string
+ * size of string
+ */
+
+static void mail_string_init (STRING *s,void *data,unsigned long size)
+{
+ /* set initial string pointers */
+ s->chunk = s->curpos = (char *) (s->data = data);
+ /* and sizes */
+ s->size = s->chunksize = s->cursize = size;
+ s->data1 = s->offset = 0; /* never any offset */
+}
+
+
+/* Get next character from string
+ * Accepts: string structure
+ * Returns: character, string structure chunk refreshed
+ */
+
+static char mail_string_next (STRING *s)
+{
+ return *s->curpos++; /* return the last byte */
+}
+
+
+/* Set string pointer position
+ * Accepts: string structure
+ * new position
+ */
+
+static void mail_string_setpos (STRING *s,unsigned long i)
+{
+ s->curpos = s->chunk + i; /* set new position */
+ s->cursize = s->chunksize - i;/* and new size */
+}
+\f
+/* Mail routines
+ *
+ * mail_xxx routines are the interface between this module and the outside
+ * world. Only these routines should be referenced by external callers.
+ *
+ * Note that there is an important difference between a "sequence" and a
+ * "message #" (msgno). A sequence is a string representing a sequence in
+ * {"n", "n:m", or combination separated by commas} format, whereas a msgno
+ * is a single integer.
+ *
+ */
+
+/* Mail version check
+ * Accepts: version
+ */
+
+void mail_versioncheck (char *version)
+{
+ /* attempt to protect again wrong .h */
+ if (strcmp (version,mailcclientversion)) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"c-client library version skew, app=%.100s library=%.100s",
+ version,mailcclientversion);
+ fatal (tmp);
+ }
+}
+
+
+/* Mail link driver
+ * Accepts: driver to add to list
+ */
+
+void mail_link (DRIVER *driver)
+{
+ DRIVER **d = &maildrivers;
+ while (*d) d = &(*d)->next; /* find end of list of drivers */
+ *d = driver; /* put driver at the end */
+ driver->next = NIL; /* this driver is the end of the list */
+}
+\f
+/* Mail manipulate driver parameters
+ * Accepts: mail stream
+ * function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *mail_parameters (MAILSTREAM *stream,long function,void *value)
+{
+ void *r,*ret = NIL;
+ DRIVER *d;
+ AUTHENTICATOR *a;
+ switch ((int) function) {
+ case SET_INBOXPATH:
+ fatal ("SET_INBOXPATH not permitted");
+ case GET_INBOXPATH:
+ if ((stream || (stream = mail_open (NIL,"INBOX",OP_PROTOTYPE))) &&
+ stream->dtb->parameters)
+ ret = (*stream->dtb->parameters) (function,value);
+ break;
+ case SET_THREADERS:
+ fatal ("SET_THREADERS not permitted");
+ case GET_THREADERS: /* use stream dtb instead of global */
+ ret = (stream && stream->dtb) ?
+ /* KLUDGE ALERT: note stream passed as value */
+ (*stream->dtb->parameters) (function,stream) : (void *) &mailthreadlist;
+ break;
+ case SET_NAMESPACE:
+ fatal ("SET_NAMESPACE not permitted");
+ break;
+ case SET_NEWSRC: /* too late on open stream */
+ if (stream && (stream != ((*stream->dtb->open) (NIL))))
+ fatal ("SET_NEWSRC not permitted");
+ else ret = env_parameters (function,value);
+ break;
+ case GET_NAMESPACE:
+ case GET_NEWSRC: /* use stream dtb instead of environment */
+ ret = (stream && stream->dtb) ?
+ /* KLUDGE ALERT: note stream passed as value */
+ (*stream->dtb->parameters) (function,stream) :
+ env_parameters (function,value);
+ break;
+ case ENABLE_DEBUG:
+ fatal ("ENABLE_DEBUG not permitted");
+ case DISABLE_DEBUG:
+ fatal ("DISABLE_DEBUG not permitted");
+ case SET_DIRFMTTEST:
+ fatal ("SET_DIRFMTTEST not permitted");
+ case GET_DIRFMTTEST:
+ if (!(stream && (ret = (*stream->dtb->parameters) (function,NIL))))
+ fatal ("GET_DIRFMTTEST not permitted");
+ break;
+\f
+ case SET_DRIVERS:
+ fatal ("SET_DRIVERS not permitted");
+ case GET_DRIVERS: /* always return global */
+ ret = (void *) maildrivers;
+ break;
+ case SET_DRIVER:
+ fatal ("SET_DRIVER not permitted");
+ case GET_DRIVER:
+ for (d = maildrivers; d && compare_cstring (d->name,(char *) value);
+ d = d->next);
+ ret = (void *) d;
+ break;
+ case ENABLE_DRIVER:
+ for (d = maildrivers; d && compare_cstring (d->name,(char *) value);
+ d = d->next);
+ if (ret = (void *) d) d->flags &= ~DR_DISABLE;
+ break;
+ case DISABLE_DRIVER:
+ for (d = maildrivers; d && compare_cstring (d->name,(char *) value);
+ d = d->next);
+ if (ret = (void *) d) d->flags |= DR_DISABLE;
+ break;
+ case ENABLE_AUTHENTICATOR:
+ for (a = mailauthenticators;/* scan authenticators */
+ a && compare_cstring (a->name,(char *) value); a = a->next);
+ if (ret = (void *) a) a->flags &= ~AU_DISABLE;
+ break;
+ case DISABLE_AUTHENTICATOR:
+ for (a = mailauthenticators;/* scan authenticators */
+ a && compare_cstring (a->name,(char *) value); a = a->next);
+ if (ret = (void *) a) a->flags |= AU_DISABLE;
+ break;
+ case UNHIDE_AUTHENTICATOR:
+ for (a = mailauthenticators;/* scan authenticators */
+ a && compare_cstring (a->name,(char *) value); a = a->next);
+ if (ret = (void *) a) a->flags &= ~AU_HIDE;
+ break;
+ case HIDE_AUTHENTICATOR:
+ for (a = mailauthenticators;/* scan authenticators */
+ a && compare_cstring (a->name,(char *) value); a = a->next);
+ if (ret = (void *) a) a->flags |= AU_HIDE;
+ break;
+ case SET_EXTERNALAUTHID:
+ if (value) { /* setting external authentication ID */
+ externalauthid = cpystr ((char *) value);
+ mail_parameters (NIL,UNHIDE_AUTHENTICATOR,"EXTERNAL");
+ }
+ else { /* clearing external authentication ID */
+ if (externalauthid) fs_give ((void **) &externalauthid);
+ mail_parameters (NIL,HIDE_AUTHENTICATOR,"EXTERNAL");
+ }
+ case GET_EXTERNALAUTHID:
+ ret = (void *) externalauthid;
+ break;
+\f
+ case SET_GETS:
+ mailgets = (mailgets_t) value;
+ case GET_GETS:
+ ret = (void *) mailgets;
+ break;
+ case SET_READPROGRESS:
+ mailreadprogress = (readprogress_t) value;
+ case GET_READPROGRESS:
+ ret = (void *) mailreadprogress;
+ break;
+ case SET_CACHE:
+ mailcache = (mailcache_t) value;
+ case GET_CACHE:
+ ret = (void *) mailcache;
+ break;
+ case SET_RFC822OUTPUT:
+ mail822out = (rfc822out_t) value;
+ case GET_RFC822OUTPUT:
+ ret = (void *) mail822out;
+ break;
+ case SET_RFC822OUTPUTFULL:
+ mail822outfull = (rfc822outfull_t) value;
+ case GET_RFC822OUTPUTFULL:
+ ret = (void *) mail822outfull;
+ break;
+ case SET_SMTPVERBOSE:
+ mailsmtpverbose = (smtpverbose_t) value;
+ case GET_SMTPVERBOSE:
+ ret = (void *) mailsmtpverbose;
+ break;
+ case SET_MAILPROXYCOPY:
+ mailproxycopy = (mailproxycopy_t) value;
+ case GET_MAILPROXYCOPY:
+ ret = (void *) mailproxycopy;
+ break;
+ case SET_PARSELINE:
+ mailparseline = (parseline_t) value;
+ case GET_PARSELINE:
+ ret = (void *) mailparseline;
+ break;
+ case SET_PARSEPHRASE:
+ mailparsephrase = (parsephrase_t) value;
+ case GET_PARSEPHRASE:
+ ret = (void *) mailparsephrase;
+ break;
+ case SET_NEWSRCQUERY:
+ mailnewsrcquery = (newsrcquery_t) value;
+ case GET_NEWSRCQUERY:
+ ret = (void *) mailnewsrcquery;
+ break;
+ case SET_NEWSRCCANONHOST:
+ mailnewsrccanon = (long) value;
+ case GET_NEWSRCCANONHOST:
+ ret = (void *) mailnewsrccanon;
+ break;
+\f
+ case SET_COPYUID:
+ mailcopyuid = (copyuid_t) value;
+ case GET_COPYUID:
+ ret = (void *) mailcopyuid;
+ break;
+ case SET_APPENDUID:
+ mailappenduid = (appenduid_t) value;
+ case GET_APPENDUID:
+ ret = (void *) mailappenduid;
+ break;
+ case SET_FREEENVELOPESPAREP:
+ mailfreeenvelopesparep = (freeenvelopesparep_t) value;
+ case GET_FREEENVELOPESPAREP:
+ ret = (void *) mailfreeenvelopesparep;
+ break;
+ case SET_FREEELTSPAREP:
+ mailfreeeltsparep = (freeeltsparep_t) value;
+ case GET_FREEELTSPAREP:
+ ret = (void *) mailfreeeltsparep;
+ break;
+ case SET_FREESTREAMSPAREP:
+ mailfreestreamsparep = (freestreamsparep_t) value;
+ case GET_FREESTREAMSPAREP:
+ ret = (void *) mailfreestreamsparep;
+ break;
+ case SET_FREEBODYSPAREP:
+ mailfreebodysparep = (freebodysparep_t) value;
+ case GET_FREEBODYSPAREP:
+ ret = (void *) mailfreebodysparep;
+ break;
+\f
+ case SET_SSLSTART:
+ mailsslstart = (sslstart_t) value;
+ case GET_SSLSTART:
+ ret = (void *) mailsslstart;
+ break;
+ case SET_SSLCERTIFICATEQUERY:
+ mailsslcertificatequery = (sslcertificatequery_t) value;
+ case GET_SSLCERTIFICATEQUERY:
+ ret = (void *) mailsslcertificatequery;
+ break;
+ case SET_SSLCLIENTCERT:
+ mailsslclientcert = (sslclientcert_t) value;
+ case GET_SSLCLIENTCERT:
+ ret = (void *) mailsslclientcert;
+ break;
+ case SET_SSLCLIENTKEY:
+ mailsslclientkey = (sslclientkey_t) value;
+ case GET_SSLCLIENTKEY:
+ ret = (void *) mailsslclientkey;
+ break;
+ case SET_SSLFAILURE:
+ mailsslfailure = (sslfailure_t) value;
+ case GET_SSLFAILURE:
+ ret = (void *) mailsslfailure;
+ break;
+ case SET_KINIT:
+ mailkinit = (kinit_t) value;
+ case GET_KINIT:
+ ret = (void *) mailkinit;
+ break;
+ case SET_SENDCOMMAND:
+ mailsendcommand = (sendcommand_t) value;
+ case GET_SENDCOMMAND:
+ ret = (void *) mailsendcommand;
+ break;
+\f
+ case SET_SERVICENAME:
+ servicename = (char *) value;
+ case GET_SERVICENAME:
+ ret = (void *) servicename;
+ break;
+ case SET_EXPUNGEATPING:
+ expungeatping = (value ? T : NIL);
+ case GET_EXPUNGEATPING:
+ ret = (void *) (expungeatping ? VOIDT : NIL);
+ break;
+ case SET_SORTRESULTS:
+ mailsortresults = (sortresults_t) value;
+ case GET_SORTRESULTS:
+ ret = (void *) mailsortresults;
+ break;
+ case SET_THREADRESULTS:
+ mailthreadresults = (threadresults_t) value;
+ case GET_THREADRESULTS:
+ ret = (void *) mailthreadresults;
+ break;
+ case SET_SSLDRIVER:
+ mailssldriver = (NETDRIVER *) value;
+ case GET_SSLDRIVER:
+ ret = (void *) mailssldriver;
+ break;
+ case SET_TRYSSLFIRST:
+ trysslfirst = (value ? T : NIL);
+ case GET_TRYSSLFIRST:
+ ret = (void *) (trysslfirst ? VOIDT : NIL);
+ break;
+ case SET_NOTIMEZONES:
+ notimezones = (value ? T : NIL);
+ case GET_NOTIMEZONES:
+ ret = (void *) (notimezones ? VOIDT : NIL);
+ break;
+ case SET_TRUSTDNS:
+ trustdns = (value ? T : NIL);
+ case GET_TRUSTDNS:
+ ret = (void *) (trustdns ? VOIDT : NIL);
+ break;
+ case SET_SASLUSESPTRNAME:
+ saslusesptrname = (value ? T : NIL);
+ case GET_SASLUSESPTRNAME:
+ ret = (void *) (saslusesptrname ? VOIDT : NIL);
+ break;
+ case SET_DEBUGSENSITIVE:
+ debugsensitive = (value ? T : NIL);
+ case GET_DEBUGSENSITIVE:
+ ret = (void *) (debugsensitive ? VOIDT : NIL);
+ break;
+\f
+ case SET_ACL:
+ mailaclresults = (getacl_t) value;
+ case GET_ACL:
+ ret = (void *) mailaclresults;
+ break;
+ case SET_LISTRIGHTS:
+ maillistrightsresults = (listrights_t) value;
+ case GET_LISTRIGHTS:
+ ret = (void *) maillistrightsresults;
+ break;
+ case SET_MYRIGHTS:
+ mailmyrightsresults = (myrights_t) value;
+ case GET_MYRIGHTS:
+ ret = (void *) mailmyrightsresults;
+ break;
+ case SET_QUOTA:
+ mailquotaresults = (quota_t) value;
+ case GET_QUOTA:
+ ret = (void *) mailquotaresults;
+ break;
+ case SET_QUOTAROOT:
+ mailquotarootresults = (quotaroot_t) value;
+ case GET_QUOTAROOT:
+ ret = (void *) mailquotarootresults;
+ break;
+ case SET_SNARFINTERVAL:
+ mailsnarfinterval = (long) value;
+ case GET_SNARFINTERVAL:
+ ret = (void *) mailsnarfinterval;
+ break;
+ case SET_SNARFPRESERVE:
+ mailsnarfpreserve = (long) value;
+ case GET_SNARFPRESERVE:
+ ret = (void *) mailsnarfpreserve;
+ break;
+ case SET_SNARFMAILBOXNAME:
+ if (stream) { /* have a stream? */
+ if (stream->snarf.name) fs_give ((void **) &stream->snarf.name);
+ stream->snarf.name = cpystr ((char *) value);
+ }
+ else fatal ("SET_SNARFMAILBOXNAME with no stream");
+ case GET_SNARFMAILBOXNAME:
+ if (stream) ret = (void *) stream->snarf.name;
+ break;
+ default:
+ if (r = smtp_parameters (function,value)) ret = r;
+ if (r = env_parameters (function,value)) ret = r;
+ if (r = tcp_parameters (function,value)) ret = r;
+ if (stream && stream->dtb) {/* if have stream, do for its driver only */
+ if (r = (*stream->dtb->parameters) (function,value)) ret = r;
+ }
+ /* else do all drivers */
+ else for (d = maildrivers; d; d = d->next)
+ if (r = (d->parameters) (function,value)) ret = r;
+ break;
+ }
+ return ret;
+}
+\f
+/* Mail validate mailbox name
+ * Accepts: MAIL stream
+ * mailbox name
+ * purpose string for error message
+ * Return: driver factory on success, NIL on failure
+ */
+
+DRIVER *mail_valid (MAILSTREAM *stream,char *mailbox,char *purpose)
+{
+ char tmp[MAILTMPLEN];
+ DRIVER *factory = NIL;
+ /* never allow names with newlines */
+ if (strpbrk (mailbox,"\015\012")) {
+ if (purpose) { /* if want an error message */
+ sprintf (tmp,"Can't %s with such a name",purpose);
+ MM_LOG (tmp,ERROR);
+ }
+ return NIL;
+ }
+ /* validate name, find driver factory */
+ if (strlen (mailbox) < (NETMAXHOST+(NETMAXUSER*2)+NETMAXMBX+NETMAXSRV+50))
+ for (factory = maildrivers; factory &&
+ ((factory->flags & DR_DISABLE) ||
+ ((factory->flags & DR_LOCAL) && (*mailbox == '{')) ||
+ !(*factory->valid) (mailbox));
+ factory = factory->next);
+ /* validate factory against non-dummy stream */
+ if (factory && stream && (stream->dtb != factory) &&
+ strcmp (stream->dtb->name,"dummy"))
+ /* factory invalid; if dummy, use stream */
+ factory = strcmp (factory->name,"dummy") ? NIL : stream->dtb;
+ if (!factory && purpose) { /* if want an error message */
+ sprintf (tmp,"Can't %s %.80s: %s",purpose,mailbox,(*mailbox == '{') ?
+ "invalid remote specification" : "no such mailbox");
+ MM_LOG (tmp,ERROR);
+ }
+ return factory; /* return driver factory */
+}
+\f
+/* Mail validate network mailbox name
+ * Accepts: mailbox name
+ * mailbox driver to validate against
+ * pointer to where to return host name if non-NIL
+ * pointer to where to return mailbox name if non-NIL
+ * Returns: driver on success, NIL on failure
+ */
+
+DRIVER *mail_valid_net (char *name,DRIVER *drv,char *host,char *mailbox)
+{
+ NETMBX mb;
+ if (!mail_valid_net_parse (name,&mb) || strcmp (mb.service,drv->name))
+ return NIL;
+ if (host) strcpy (host,mb.host);
+ if (mailbox) strcpy (mailbox,mb.mailbox);
+ return drv;
+}
+
+
+/* Mail validate network mailbox name
+ * Accepts: mailbox name
+ * NETMBX structure to return values
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_valid_net_parse (char *name,NETMBX *mb)
+{
+ return mail_valid_net_parse_work (name,mb,"imap");
+}
+\f
+/* Mail validate network mailbox name worker routine
+ * Accepts: mailbox name
+ * NETMBX structure to return values
+ * default service
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_valid_net_parse_work (char *name,NETMBX *mb,char *service)
+{
+ int i,j;
+ char c,*s,*t,*v,tmp[MAILTMPLEN],arg[MAILTMPLEN];
+ /* initialize structure */
+ memset (mb,'\0',sizeof (NETMBX));
+ /* must have host specification */
+ if (*name++ != '{') return NIL;
+ if (*name == '[') { /* if domain literal, find its ending */
+ if (!((v = strpbrk (name,"]}")) && (*v++ == ']'))) return NIL;
+ }
+ /* find end of host name */
+ else if (!(v = strpbrk (name,"/:}"))) return NIL;
+ /* validate length, find mailbox part */
+ if (!((i = v - name) && (i < NETMAXHOST) && (t = strchr (v,'}')) &&
+ ((j = t - v) < MAILTMPLEN) && (strlen (t+1) < (size_t) NETMAXMBX)))
+ return NIL; /* invalid mailbox */
+ strncpy (mb->host,name,i); /* set host name */
+ strncpy (mb->orighost,name,i);
+ mb->host[i] = mb->orighost[i] = '\0';
+ strcpy (mb->mailbox,t+1); /* set mailbox name */
+ if (t - v) { /* any switches or port specification? */
+ strncpy (t = tmp,v,j); /* copy it */
+ tmp[j] = '\0'; /* tie it off */
+ c = *t++; /* get first delimiter */
+ do switch (c) { /* act based upon the character */
+ case ':': /* port specification */
+ if (mb->port || !(mb->port = strtoul (t,&t,10))) return NIL;
+ c = t ? *t++ : '\0'; /* get delimiter, advance pointer */
+ break;
+ case '/': /* switch */
+ /* find delimiter */
+ if (t = strpbrk (s = t,"/:=")) {
+ c = *t; /* remember delimiter for later */
+ *t++ = '\0'; /* tie off switch name */
+ }
+ else c = '\0'; /* no delimiter */
+ if (c == '=') { /* parse switches which take arguments */
+ if (*t == '"') { /* quoted string? */
+ for (v = arg,i = 0,++t; (c = *t++) != '"';) {
+ if (!c) return NIL; /* unterminated string */
+ /* quote next character */
+ if (c == '\\') c = *t++;
+ if (!c) return NIL; /* can't quote NUL either */
+ arg[i++] = c;
+ }
+ c = *t++; /* remember delimiter for later */
+ arg[i] = '\0'; /* tie off argument */
+ }
+ else { /* non-quoted argument */
+ if (t = strpbrk (v = t,"/:")) {
+ c = *t; /* remember delimiter for later */
+ *t++ = '\0'; /* tie off switch name */
+ }
+ else c = '\0'; /* no delimiter */
+ i = strlen (v); /* length of argument */
+ }
+ if (!compare_cstring (s,"service") && (i < NETMAXSRV) && !*mb->service)
+ lcase (strcpy (mb->service,v));
+ else if (!compare_cstring (s,"user") && (i < NETMAXUSER) && !*mb->user)
+ strcpy (mb->user,v);
+ else if (!compare_cstring (s,"authuser") && (i < NETMAXUSER) &&
+ !*mb->authuser) strcpy (mb->authuser,v);
+ else return NIL;
+ }
+\f
+ else { /* non-argument switch */
+ if (!compare_cstring (s,"anonymous")) mb->anoflag = T;
+ else if (!compare_cstring (s,"debug")) mb->dbgflag = T;
+ else if (!compare_cstring (s,"readonly")) mb->readonlyflag = T;
+ else if (!compare_cstring (s,"secure")) mb->secflag = T;
+ else if (!compare_cstring (s,"norsh")) mb->norsh = T;
+ else if (!compare_cstring (s,"loser")) mb->loser = T;
+ else if (!compare_cstring (s,"tls") && !mb->notlsflag)
+ mb->tlsflag = T;
+ else if (!compare_cstring (s,"tls-sslv23") && !mb->notlsflag)
+ mb->tlssslv23 = mb->tlsflag = T;
+ else if (!compare_cstring (s,"notls") && !mb->tlsflag)
+ mb->notlsflag = T;
+ else if (!compare_cstring (s,"tryssl"))
+ mb->trysslflag = mailssldriver? T : NIL;
+ else if (mailssldriver && !compare_cstring (s,"ssl") && !mb->tlsflag)
+ mb->sslflag = mb->notlsflag = T;
+ else if (mailssldriver && !compare_cstring (s,"novalidate-cert"))
+ mb->novalidate = T;
+ /* hack for compatibility with the past */
+ else if (mailssldriver && !compare_cstring (s,"validate-cert"));
+ /* service switches below here */
+ else if (*mb->service) return NIL;
+ else if (!compare_cstring (s,"imap") ||
+ !compare_cstring (s,"nntp") ||
+ !compare_cstring (s,"pop3") ||
+ !compare_cstring (s,"smtp") ||
+ !compare_cstring (s,"submit"))
+ lcase (strcpy (mb->service,s));
+ else if (!compare_cstring (s,"imap2") ||
+ !compare_cstring (s,"imap2bis") ||
+ !compare_cstring (s,"imap4") ||
+ !compare_cstring (s,"imap4rev1"))
+ strcpy (mb->service,"imap");
+ else if (!compare_cstring (s,"pop"))
+ strcpy (mb->service,"pop3");
+ else return NIL; /* invalid non-argument switch */
+ }
+ break;
+ default: /* anything else is bogus */
+ return NIL;
+ } while (c); /* see if anything more to parse */
+ }
+ /* default mailbox name */
+ if (!*mb->mailbox) strcpy (mb->mailbox,"INBOX");
+ /* default service name */
+ if (!*mb->service) strcpy (mb->service,service);
+ /* /norsh only valid if imap */
+ if (mb->norsh && strcmp (mb->service,"imap")) return NIL;
+ return T;
+}
+\f
+/* Mail scan mailboxes for string
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ * contents to search
+ */
+
+void mail_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
+{
+ int remote = ((*pat == '{') || (ref && *ref == '{'));
+ DRIVER *d;
+ if (ref && (strlen (ref) > NETMAXMBX)) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Invalid LIST reference specification: %.80s",ref);
+ MM_LOG (tmp,ERROR);
+ return;
+ }
+ if (strlen (pat) > NETMAXMBX) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Invalid LIST pattern specification: %.80s",pat);
+ MM_LOG (tmp,ERROR);
+ return;
+ }
+ if (*pat == '{') ref = NIL; /* ignore reference if pattern is remote */
+ if (stream) { /* if have a stream, do it for that stream */
+ if ((d = stream->dtb) && d->scan &&
+ !(((d->flags & DR_LOCAL) && remote)))
+ (*d->scan) (stream,ref,pat,contents);
+ }
+ /* otherwise do for all DTB's */
+ else for (d = maildrivers; d; d = d->next)
+ if (d->scan && !((d->flags & DR_DISABLE) ||
+ ((d->flags & DR_LOCAL) && remote)))
+ (d->scan) (NIL,ref,pat,contents);
+}
+\f
+/* Mail list mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mail_list (MAILSTREAM *stream,char *ref,char *pat)
+{
+ int remote = ((*pat == '{') || (ref && *ref == '{'));
+ DRIVER *d = maildrivers;
+ if (ref && (strlen (ref) > NETMAXMBX)) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Invalid LIST reference specification: %.80s",ref);
+ MM_LOG (tmp,ERROR);
+ return;
+ }
+ if (strlen (pat) > NETMAXMBX) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Invalid LIST pattern specification: %.80s",pat);
+ MM_LOG (tmp,ERROR);
+ return;
+ }
+ if (*pat == '{') ref = NIL; /* ignore reference if pattern is remote */
+ if (stream && stream->dtb) { /* if have a stream, do it for that stream */
+ if (!(((d = stream->dtb)->flags & DR_LOCAL) && remote))
+ (*d->list) (stream,ref,pat);
+ }
+ /* otherwise do for all DTB's */
+ else do if (!((d->flags & DR_DISABLE) ||
+ ((d->flags & DR_LOCAL) && remote)))
+ (d->list) (NIL,ref,pat);
+ while (d = d->next); /* until at the end */
+}
+\f
+/* Mail list subscribed mailboxes
+ * Accepts: mail stream
+ * pattern to search
+ */
+
+void mail_lsub (MAILSTREAM *stream,char *ref,char *pat)
+{
+ int remote = ((*pat == '{') || (ref && *ref == '{'));
+ DRIVER *d = maildrivers;
+ if (ref && (strlen (ref) > NETMAXMBX)) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Invalid LSUB reference specification: %.80s",ref);
+ MM_LOG (tmp,ERROR);
+ return;
+ }
+ if (strlen (pat) > NETMAXMBX) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Invalid LSUB pattern specification: %.80s",pat);
+ MM_LOG (tmp,ERROR);
+ return;
+ }
+ if (*pat == '{') ref = NIL; /* ignore reference if pattern is remote */
+ if (stream && stream->dtb) { /* if have a stream, do it for that stream */
+ if (!(((d = stream->dtb)->flags & DR_LOCAL) && remote))
+ (*d->lsub) (stream,ref,pat);
+ }
+ /* otherwise do for all DTB's */
+ else do if (!((d->flags & DR_DISABLE) ||
+ ((d->flags & DR_LOCAL) && remote)))
+ (d->lsub) (NIL,ref,pat);
+ while (d = d->next); /* until at the end */
+}
+\f
+/* Mail subscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to add to subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_subscribe (MAILSTREAM *stream,char *mailbox)
+{
+ DRIVER *factory = mail_valid (stream,mailbox,"subscribe to mailbox");
+ return factory ?
+ (factory->subscribe ?
+ (*factory->subscribe) (stream,mailbox) : sm_subscribe (mailbox)) : NIL;
+}
+
+
+/* Mail unsubscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to delete from subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_unsubscribe (MAILSTREAM *stream,char *mailbox)
+{
+ DRIVER *factory = mail_valid (stream,mailbox,NIL);
+ return (factory && factory->unsubscribe) ?
+ (*factory->unsubscribe) (stream,mailbox) : sm_unsubscribe (mailbox);
+}
+\f
+/* Mail create mailbox
+ * Accepts: mail stream
+ * mailbox name to create
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_create (MAILSTREAM *stream,char *mailbox)
+{
+ MAILSTREAM *ts;
+ char *s,*t,tmp[MAILTMPLEN];
+ size_t i;
+ DRIVER *d;
+ /* never allow names with newlines */
+ if (s = strpbrk (mailbox,"\015\012")) {
+ MM_LOG ("Can't create mailbox with such a name",ERROR);
+ return NIL;
+ }
+ if (strlen (mailbox) >= (NETMAXHOST+(NETMAXUSER*2)+NETMAXMBX+NETMAXSRV+50)) {
+ sprintf (tmp,"Can't create %.80s: %s",mailbox,(*mailbox == '{') ?
+ "invalid remote specification" : "no such mailbox");
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ /* create of INBOX invalid */
+ if (!compare_cstring (mailbox,"INBOX")) {
+ MM_LOG ("Can't create INBOX",ERROR);
+ return NIL;
+ }
+ /* validate name */
+ if (s = mail_utf7_valid (mailbox)) {
+ sprintf (tmp,"Can't create %s: %.80s",s,mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+\f
+ /* see if special driver hack */
+ if ((mailbox[0] == '#') && ((mailbox[1] == 'd') || (mailbox[1] == 'D')) &&
+ ((mailbox[2] == 'r') || (mailbox[2] == 'R')) &&
+ ((mailbox[3] == 'i') || (mailbox[3] == 'I')) &&
+ ((mailbox[4] == 'v') || (mailbox[4] == 'V')) &&
+ ((mailbox[5] == 'e') || (mailbox[5] == 'E')) &&
+ ((mailbox[6] == 'r') || (mailbox[6] == 'R')) && (mailbox[7] == '.')) {
+ /* copy driver until likely delimiter */
+ if ((s = strpbrk (t = mailbox+8,"/\\:")) && (i = s - t)) {
+ strncpy (tmp,t,i);
+ tmp[i] = '\0';
+ }
+ else {
+ sprintf (tmp,"Can't create mailbox %.80s: bad driver syntax",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ for (d = maildrivers; d && strcmp (d->name,tmp); d = d->next);
+ if (d) mailbox = ++s; /* skip past driver specification */
+ else {
+ sprintf (tmp,"Can't create mailbox %.80s: unknown driver",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ }
+ /* use stream if one given or deterministic */
+ else if ((stream && stream->dtb) ||
+ (((*mailbox == '{') || (*mailbox == '#')) &&
+ (stream = mail_open (NIL,mailbox,OP_PROTOTYPE | OP_SILENT))))
+ d = stream->dtb;
+ else if ((*mailbox != '{') && (ts = default_proto (NIL))) d = ts->dtb;
+ else { /* failed utterly */
+ sprintf (tmp,"Can't create mailbox %.80s: indeterminate format",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ return (*d->create) (stream,mailbox);
+}
+\f
+/* Mail delete mailbox
+ * Accepts: mail stream
+ * mailbox name to delete
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_delete (MAILSTREAM *stream,char *mailbox)
+{
+ DRIVER *dtb = mail_valid (stream,mailbox,"delete mailbox");
+ if (!dtb) return NIL;
+ if (((mailbox[0] == 'I') || (mailbox[0] == 'i')) &&
+ ((mailbox[1] == 'N') || (mailbox[1] == 'n')) &&
+ ((mailbox[2] == 'B') || (mailbox[2] == 'b')) &&
+ ((mailbox[3] == 'O') || (mailbox[3] == 'o')) &&
+ ((mailbox[4] == 'X') || (mailbox[4] == 'x')) && !mailbox[5]) {
+ MM_LOG ("Can't delete INBOX",ERROR);
+ return NIL;
+ }
+ return SAFE_DELETE (dtb,stream,mailbox);
+}
+
+
+/* Mail rename mailbox
+ * Accepts: mail stream
+ * old mailbox name
+ * new mailbox name
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_rename (MAILSTREAM *stream,char *old,char *newname)
+{
+ char *s,tmp[MAILTMPLEN];
+ DRIVER *dtb = mail_valid (stream,old,"rename mailbox");
+ if (!dtb) return NIL;
+ /* validate name */
+ if (s = mail_utf7_valid (newname)) {
+ sprintf (tmp,"Can't rename to %s: %.80s",s,newname);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ if ((*old != '{') && (*old != '#') && mail_valid (NIL,newname,NIL)) {
+ sprintf (tmp,"Can't rename %.80s: mailbox %.80s already exists",
+ old,newname);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ return SAFE_RENAME (dtb,stream,old,newname);
+}
+\f
+/* Validate mailbox as Modified UTF-7
+ * Accepts: candidate mailbox name
+ * Returns: error string if error, NIL if valid
+ */
+
+char *mail_utf7_valid (char *mailbox)
+{
+ char *s;
+ for (s = mailbox; *s; s++) { /* make sure valid name */
+ /* reserved for future use with UTF-8 */
+ if (*s & 0x80) return "mailbox name with 8-bit octet";
+ /* validate modified UTF-7 */
+ else if (*s == '&') while (*++s != '-') switch (*s) {
+ case '\0':
+ return "unterminated modified UTF-7 name";
+ case '+': /* valid modified BASE64 */
+ case ',':
+ break; /* all OK so far */
+ default: /* must be alphanumeric */
+ if (!isalnum (*s)) return "invalid modified UTF-7 name";
+ break;
+ }
+ }
+ return NIL; /* all OK */
+}
+\f
+/* Mail status of mailbox
+ * Accepts: mail stream if open on this mailbox
+ * mailbox name
+ * status flags
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_status (MAILSTREAM *stream,char *mbx,long flags)
+{
+ DRIVER *dtb = mail_valid (stream,mbx,"get status of mailbox");
+ if (!dtb) return NIL; /* only if valid */
+ if (stream && ((dtb != stream->dtb) ||
+ ((dtb->flags & DR_LOCAL) && strcmp (mbx,stream->mailbox) &&
+ strcmp (mbx,stream->original_mailbox))))
+ stream = NIL; /* stream not suitable */
+ return SAFE_STATUS (dtb,stream,mbx,flags);
+}
+
+
+/* Mail status of mailbox default handler
+ * Accepts: mail stream
+ * mailbox name
+ * status flags
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_status_default (MAILSTREAM *stream,char *mbx,long flags)
+{
+ MAILSTATUS status;
+ unsigned long i;
+ MAILSTREAM *tstream = NIL;
+ /* make temporary stream (unless this mbx) */
+ if (!stream && !(stream = tstream =
+ mail_open (NIL,mbx,OP_READONLY|OP_SILENT))) return NIL;
+ status.flags = flags; /* return status values */
+ status.messages = stream->nmsgs;
+ status.recent = stream->recent;
+ if (flags & SA_UNSEEN) /* must search to get unseen messages */
+ for (i = 1,status.unseen = 0; i <= stream->nmsgs; i++)
+ if (!mail_elt (stream,i)->seen) status.unseen++;
+ status.uidnext = stream->uid_last + 1;
+ status.uidvalidity = stream->uid_validity;
+ MM_STATUS(stream,mbx,&status);/* pass status to main program */
+ if (tstream) mail_close (tstream);
+ return T; /* success */
+}
+\f
+/* Mail open
+ * Accepts: candidate stream for recycling
+ * mailbox name
+ * open options
+ * Returns: stream to use on success, NIL on failure
+ */
+
+MAILSTREAM *mail_open (MAILSTREAM *stream,char *name,long options)
+{
+ int i;
+ char c,*s,tmp[MAILTMPLEN];
+ NETMBX mb;
+ DRIVER *d;
+ switch (name[0]) { /* see if special handling */
+ case '#': /* possible special hacks */
+ if (((name[1] == 'M') || (name[1] == 'm')) &&
+ ((name[2] == 'O') || (name[2] == 'o')) &&
+ ((name[3] == 'V') || (name[3] == 'v')) &&
+ ((name[4] == 'E') || (name[4] == 'e')) && (c = name[5]) &&
+ (s = strchr (name+6,c)) && (i = s - (name + 6)) && (i < MAILTMPLEN)) {
+ if (stream = mail_open (stream,s+1,options)) {
+ strncpy (tmp,name+6,i); /* copy snarf mailbox name */
+ tmp[i] = '\0'; /* tie off name */
+ mail_parameters (stream,SET_SNARFMAILBOXNAME,(void *) tmp);
+ stream->snarf.options = options;
+ mail_ping (stream); /* do initial snarf */
+ /* punt if can't do initial snarf */
+ if (!stream->snarf.time) stream = mail_close (stream);
+ }
+ return stream;
+ }
+ /* special POP hack */
+ else if (((name[1] == 'P') || (name[1] == 'p')) &&
+ ((name[2] == 'O') || (name[2] == 'o')) &&
+ ((name[3] == 'P') || (name[3] == 'p')) &&
+ mail_valid_net_parse_work (name+4,&mb,"pop3") &&
+ !strcmp (mb.service,"pop3") && !mb.anoflag && !mb.readonlyflag) {
+ if (stream = mail_open (stream,mb.mailbox,options)) {
+ sprintf (tmp,"{%.255s",mb.host);
+ if (mb.port) sprintf (tmp + strlen (tmp),":%lu",mb.port);
+ if (mb.user[0]) sprintf (tmp + strlen (tmp),"/user=%.64s",mb.user);
+ if (mb.dbgflag) strcat (tmp,"/debug");
+ if (mb.secflag) strcat (tmp,"/secure");
+ if (mb.tlsflag) strcat (tmp,"/tls");
+ if (mb.notlsflag) strcat (tmp,"/notls");
+ if (mb.sslflag) strcat (tmp,"/ssl");
+ if (mb.trysslflag) strcat (tmp,"/tryssl");
+ if (mb.novalidate) strcat (tmp,"/novalidate-cert");
+ strcat (tmp,"/pop3/loser}");
+ mail_parameters (stream,SET_SNARFMAILBOXNAME,(void *) tmp);
+ mail_ping (stream); /* do initial snarf */
+ }
+ return stream; /* return local mailbox stream */
+ }
+\f
+ else if ((options & OP_PROTOTYPE) &&
+ ((name[1] == 'D') || (name[1] == 'd')) &&
+ ((name[2] == 'R') || (name[2] == 'r')) &&
+ ((name[3] == 'I') || (name[3] == 'i')) &&
+ ((name[4] == 'V') || (name[4] == 'v')) &&
+ ((name[5] == 'E') || (name[5] == 'e')) &&
+ ((name[6] == 'R') || (name[6] == 'r')) && (name[7] == '.')) {
+ sprintf (tmp,"%.80s",name+8);
+ /* tie off name at likely delimiter */
+ if (s = strpbrk (tmp,"/\\:")) *s++ = '\0';
+ else {
+ sprintf (tmp,"Can't resolve mailbox %.80s: bad driver syntax",name);
+ MM_LOG (tmp,ERROR);
+ return mail_close (stream);
+ }
+ for (d = maildrivers; d && compare_cstring (d->name,tmp); d = d->next);
+ if (d) return (*d->open) (NIL);
+ sprintf (tmp,"Can't resolve mailbox %.80s: unknown driver",name);
+ MM_LOG (tmp,ERROR);
+ return mail_close (stream);
+ }
+ /* fall through to default case */
+ default: /* not special hack (but could be # name */
+ d = mail_valid (NIL,name,(options & OP_SILENT) ?
+ (char *) NIL : "open mailbox");
+ }
+ return d ? mail_open_work (d,stream,name,options) : stream;
+}
+\f
+/* Mail open worker routine
+ * Accepts: factory
+ * candidate stream for recycling
+ * mailbox name
+ * open options
+ * Returns: stream to use on success, NIL on failure
+ */
+
+MAILSTREAM *mail_open_work (DRIVER *d,MAILSTREAM *stream,char *name,
+ long options)
+{
+ int i;
+ char tmp[MAILTMPLEN];
+ NETMBX mb;
+ if (options & OP_PROTOTYPE) return (*d->open) (NIL);
+ /* name is copied here in case the caller does a re-open using
+ * stream->mailbox or stream->original_mailbox as the argument.
+ */
+ name = cpystr (name); /* make copy of name */
+ if (stream) { /* recycling requested? */
+ if ((stream->dtb == d) && (d->flags & DR_RECYCLE) &&
+ ((d->flags & DR_HALFOPEN) || !(options & OP_HALFOPEN)) &&
+ mail_usable_network_stream (stream,name)) {
+ /* yes, checkpoint if needed */
+ if (d->flags & DR_XPOINT) mail_check (stream);
+ mail_free_cache (stream); /* clean up stream */
+ if (stream->mailbox) fs_give ((void **) &stream->mailbox);
+ if (stream->original_mailbox)
+ fs_give ((void **) &stream->original_mailbox);
+ /* flush user flags */
+ for (i = 0; i < NUSERFLAGS; i++)
+ if (stream->user_flags[i]) fs_give ((void **) &stream->user_flags[i]);
+ }
+ else { /* stream not recycleable, babble if net */
+ if (!stream->silent && stream->dtb && !(stream->dtb->flags&DR_LOCAL) &&
+ mail_valid_net_parse (stream->mailbox,&mb)) {
+ sprintf (tmp,"Closing connection to %.80s",mb.host);
+ MM_LOG (tmp,(long) NIL);
+ }
+ /* flush the old stream */
+ stream = mail_close (stream);
+ }
+ }
+ /* check if driver does not support halfopen */
+ else if ((options & OP_HALFOPEN) && !(d->flags & DR_HALFOPEN)) {
+ fs_give ((void **) &name);
+ return NIL;
+ }
+\f
+ /* instantiate new stream if not recycling */
+ if (!stream) (*mailcache) (stream = (MAILSTREAM *)
+ memset (fs_get (sizeof (MAILSTREAM)),0,
+ sizeof (MAILSTREAM)),(long) 0,CH_INIT);
+ stream->dtb = d; /* set dispatch */
+ /* set mailbox name */
+ stream->mailbox = cpystr (stream->original_mailbox = name);
+ /* initialize stream flags */
+ stream->inbox = stream->lock = NIL;
+ stream->debug = (options & OP_DEBUG) ? T : NIL;
+ stream->rdonly = (options & OP_READONLY) ? T : NIL;
+ stream->anonymous = (options & OP_ANONYMOUS) ? T : NIL;
+ stream->scache = (options & OP_SHORTCACHE) ? T : NIL;
+ stream->silent = (options & OP_SILENT) ? T : NIL;
+ stream->halfopen = (options & OP_HALFOPEN) ? T : NIL;
+ stream->secure = (options & OP_SECURE) ? T : NIL;
+ stream->tryssl = (options & OP_TRYSSL) ? T : NIL;
+ stream->mulnewsrc = (options & OP_MULNEWSRC) ? T : NIL;
+ stream->nokod = (options & OP_NOKOD) ? T : NIL;
+ stream->sniff = (options & OP_SNIFF) ? T : NIL;
+ stream->perm_seen = stream->perm_deleted = stream->perm_flagged =
+ stream->perm_answered = stream->perm_draft = stream->kwd_create = NIL;
+ stream->uid_nosticky = (d->flags & DR_NOSTICKY) ? T : NIL;
+ stream->uid_last = 0; /* default UID validity */
+ stream->uid_validity = (unsigned long) time (0);
+ /* have driver open, flush if failed */
+ return ((*d->open) (stream)) ? stream : mail_close (stream);
+}
+\f
+/* Mail close
+ * Accepts: mail stream
+ * close options
+ * Returns: NIL, always
+ */
+
+MAILSTREAM *mail_close_full (MAILSTREAM *stream,long options)
+{
+ int i;
+ if (stream) { /* make sure argument given */
+ /* do the driver's close action */
+ if (stream->dtb) (*stream->dtb->close) (stream,options);
+ if (stream->mailbox) fs_give ((void **) &stream->mailbox);
+ if (stream->original_mailbox)
+ fs_give ((void **) &stream->original_mailbox);
+ if (stream->snarf.name) fs_give ((void **) &stream->snarf.name);
+ stream->sequence++; /* invalidate sequence */
+ /* flush user flags */
+ for (i = 0; i < NUSERFLAGS; i++)
+ if (stream->user_flags[i]) fs_give ((void **) &stream->user_flags[i]);
+ mail_free_cache (stream); /* finally free the stream's storage */
+ if (mailfreestreamsparep && stream->sparep)
+ (*mailfreestreamsparep) (&stream->sparep);
+ if (!stream->use) fs_give ((void **) &stream);
+ }
+ return NIL;
+}
+\f
+/* Mail make handle
+ * Accepts: mail stream
+ * Returns: handle
+ *
+ * Handles provide a way to have multiple pointers to a stream yet allow the
+ * stream's owner to nuke it or recycle it.
+ */
+
+MAILHANDLE *mail_makehandle (MAILSTREAM *stream)
+{
+ MAILHANDLE *handle = (MAILHANDLE *) fs_get (sizeof (MAILHANDLE));
+ handle->stream = stream; /* copy stream */
+ /* and its sequence */
+ handle->sequence = stream->sequence;
+ stream->use++; /* let stream know another handle exists */
+ return handle;
+}
+
+
+/* Mail release handle
+ * Accepts: Mail handle
+ */
+
+void mail_free_handle (MAILHANDLE **handle)
+{
+ MAILSTREAM *s;
+ if (*handle) { /* only free if exists */
+ /* resign stream, flush unreferenced zombies */
+ if ((!--(s = (*handle)->stream)->use) && !s->dtb) fs_give ((void **) &s);
+ fs_give ((void **) handle); /* now flush the handle */
+ }
+}
+
+
+/* Mail get stream handle
+ * Accepts: Mail handle
+ * Returns: mail stream or NIL if stream gone
+ */
+
+MAILSTREAM *mail_stream (MAILHANDLE *handle)
+{
+ MAILSTREAM *s = handle->stream;
+ return (s->dtb && (handle->sequence == s->sequence)) ? s : NIL;
+}
+\f
+/* Mail fetch cache element
+ * Accepts: mail stream
+ * message # to fetch
+ * Returns: cache element of this message
+ * Can also be used to create cache elements for new messages.
+ */
+
+MESSAGECACHE *mail_elt (MAILSTREAM *stream,unsigned long msgno)
+{
+ if (msgno < 1 || msgno > stream->nmsgs) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Bad msgno %lu in mail_elt, nmsgs = %lu, mbx=%.80s",
+ msgno,stream->nmsgs,stream->mailbox ? stream->mailbox : "???");
+ fatal (tmp);
+ }
+ return (MESSAGECACHE *) (*mailcache) (stream,msgno,CH_MAKEELT);
+}
+
+
+/* Mail fetch fast information
+ * Accepts: mail stream
+ * sequence
+ * option flags
+ *
+ * Generally, mail_fetch_structure is preferred
+ */
+
+void mail_fetch_fast (MAILSTREAM *stream,char *sequence,long flags)
+{
+ /* do the driver's action */
+ if (stream->dtb && stream->dtb->fast)
+ (*stream->dtb->fast) (stream,sequence,flags);
+}
+
+
+/* Mail fetch flags
+ * Accepts: mail stream
+ * sequence
+ * option flags
+ */
+
+void mail_fetch_flags (MAILSTREAM *stream,char *sequence,long flags)
+{
+ /* do the driver's action */
+ if (stream->dtb && stream->dtb->msgflags)
+ (*stream->dtb->msgflags) (stream,sequence,flags);
+}
+\f
+/* Mail fetch message overview
+ * Accepts: mail stream
+ * UID sequence to fetch
+ * pointer to overview return function
+ */
+
+void mail_fetch_overview (MAILSTREAM *stream,char *sequence,overview_t ofn)
+{
+ if (stream->dtb && mail_uid_sequence (stream,sequence) &&
+ !(stream->dtb->overview && (*stream->dtb->overview) (stream,ofn)) &&
+ mail_ping (stream))
+ mail_fetch_overview_default (stream,ofn);
+}
+
+
+/* Mail fetch message overview using sequence numbers instead of UIDs
+ * Accepts: mail stream
+ * sequence to fetch
+ * pointer to overview return function
+ */
+
+void mail_fetch_overview_sequence (MAILSTREAM *stream,char *sequence,
+ overview_t ofn)
+{
+ if (stream->dtb && mail_sequence (stream,sequence) &&
+ !(stream->dtb->overview && (*stream->dtb->overview) (stream,ofn)) &&
+ mail_ping (stream))
+ mail_fetch_overview_default (stream,ofn);
+}
+
+
+/* Mail fetch message overview default handler
+ * Accepts: mail stream with sequence bits lit
+ * pointer to overview return function
+ */
+
+void mail_fetch_overview_default (MAILSTREAM *stream,overview_t ofn)
+{
+ MESSAGECACHE *elt;
+ ENVELOPE *env;
+ OVERVIEW ov;
+ unsigned long i;
+ ov.optional.lines = 0;
+ ov.optional.xref = NIL;
+ for (i = 1; i <= stream->nmsgs; i++)
+ if (((elt = mail_elt (stream,i))->sequence) &&
+ (env = mail_fetch_structure (stream,i,NIL,NIL)) && ofn) {
+ ov.subject = env->subject;
+ ov.from = env->from;
+ ov.date = env->date;
+ ov.message_id = env->message_id;
+ ov.references = env->references;
+ ov.optional.octets = elt->rfc822_size;
+ (*ofn) (stream,mail_uid (stream,i),&ov,i);
+ }
+}
+\f
+/* Mail fetch message structure
+ * Accepts: mail stream
+ * message # to fetch
+ * pointer to return body
+ * option flags
+ * Returns: envelope of this message, body returned in body value
+ *
+ * Fetches the "fast" information as well
+ */
+
+ENVELOPE *mail_fetch_structure (MAILSTREAM *stream,unsigned long msgno,
+ BODY **body,long flags)
+{
+ ENVELOPE **env;
+ BODY **b;
+ MESSAGECACHE *elt;
+ char c,*s,*hdr;
+ unsigned long hdrsize;
+ STRING bs;
+ /* do the driver's action if specified */
+ if (stream->dtb && stream->dtb->structure)
+ return (*stream->dtb->structure) (stream,msgno,body,flags);
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return NIL; /* must get UID/msgno map first */
+ }
+ elt = mail_elt (stream,msgno);/* get elt for real message number */
+ if (stream->scache) { /* short caching */
+ if (msgno != stream->msgno){/* garbage collect if not same message */
+ mail_gc (stream,GC_ENV | GC_TEXTS);
+ stream->msgno = msgno; /* this is the current message now */
+ }
+ env = &stream->env; /* get pointers to envelope and body */
+ b = &stream->body;
+ }
+ else { /* get pointers to elt envelope and body */
+ env = &elt->private.msg.env;
+ b = &elt->private.msg.body;
+ }
+\f
+ if (stream->dtb && ((body && !*b) || !*env || (*env)->incomplete)) {
+ mail_free_envelope (env); /* flush old envelope and body */
+ mail_free_body (b);
+ /* see if need to fetch the whole thing */
+ if (body || !elt->rfc822_size) {
+ s = (*stream->dtb->header) (stream,msgno,&hdrsize,flags & ~FT_INTERNAL);
+ /* make copy in case body fetch smashes it */
+ hdr = (char *) memcpy (fs_get ((size_t) hdrsize+1),s,(size_t) hdrsize);
+ hdr[hdrsize] = '\0'; /* tie off header */
+ (*stream->dtb->text) (stream,msgno,&bs,(flags & ~FT_INTERNAL) | FT_PEEK);
+ if (!elt->rfc822_size) elt->rfc822_size = hdrsize + SIZE (&bs);
+ if (body) /* only parse body if requested */
+ rfc822_parse_msg (env,b,hdr,hdrsize,&bs,BADHOST,stream->dtb->flags);
+ else
+ rfc822_parse_msg (env,NIL,hdr,hdrsize,NIL,BADHOST,stream->dtb->flags);
+ fs_give ((void **) &hdr); /* flush header */
+ }
+ else { /* can save memory doing it this way */
+ hdr = (*stream->dtb->header) (stream,msgno,&hdrsize,flags | FT_INTERNAL);
+ if (hdrsize) { /* in case null header */
+ c = hdr[hdrsize]; /* preserve what's there */
+ hdr[hdrsize] = '\0'; /* tie off header */
+ rfc822_parse_msg (env,NIL,hdr,hdrsize,NIL,BADHOST,stream->dtb->flags);
+ hdr[hdrsize] = c; /* restore in case cached data */
+ }
+ else *env = mail_newenvelope ();
+ }
+ }
+ /* if need date, have date in envelope? */
+ if (!elt->day && *env && (*env)->date) mail_parse_date (elt,(*env)->date);
+ /* sigh, fill in bogus default */
+ if (!elt->day) elt->day = elt->month = 1;
+ if (body) *body = *b; /* return the body */
+ return *env; /* return the envelope */
+}
+\f
+/* Mail mark single message (internal use only)
+ * Accepts: mail stream
+ * elt to mark
+ * fetch flags
+ */
+
+static void markseen (MAILSTREAM *stream,MESSAGECACHE *elt,long flags)
+{
+ unsigned long i;
+ char sequence[20];
+ MESSAGECACHE *e;
+ /* non-peeking and needs to set \Seen? */
+ if (!(flags & FT_PEEK) && !elt->seen) {
+ if (stream->dtb->flagmsg){ /* driver wants per-message call? */
+ elt->valid = NIL; /* do pre-alteration driver call */
+ (*stream->dtb->flagmsg) (stream,elt);
+ /* set seen, do post-alteration driver call */
+ elt->seen = elt->valid = T;
+ (*stream->dtb->flagmsg) (stream,elt);
+ }
+ if (stream->dtb->flag) { /* driver wants one-time call? */
+ /* better safe than sorry, save seq bits */
+ for (i = 1; i <= stream->nmsgs; i++) {
+ e = mail_elt (stream,i);
+ e->private.sequence = e->sequence;
+ }
+ /* call driver to set the message */
+ sprintf (sequence,"%lu",elt->msgno);
+ (*stream->dtb->flag) (stream,sequence,"\\Seen",ST_SET);
+ /* restore sequence bits */
+ for (i = 1; i <= stream->nmsgs; i++) {
+ e = mail_elt (stream,i);
+ e->sequence = e->private.sequence;
+ }
+ }
+ /* notify mail program of flag change */
+ MM_FLAGS (stream,elt->msgno);
+ }
+}
+\f
+/* Mail fetch message
+ * Accepts: mail stream
+ * message # to fetch
+ * pointer to returned length
+ * flags
+ * Returns: message text
+ */
+
+char *mail_fetch_message (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *len,long flags)
+{
+ GETS_DATA md;
+ SIZEDTEXT *t;
+ STRING bs;
+ MESSAGECACHE *elt;
+ char *s,*u;
+ unsigned long i,j;
+ if (len) *len = 0; /* default return size */
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return ""; /* must get UID/msgno map first */
+ }
+ /* initialize message data identifier */
+ INIT_GETS (md,stream,msgno,"",0,0);
+ /* is data already cached? */
+ if ((t = &(elt = mail_elt (stream,msgno))->private.msg.full.text)->data) {
+ markseen (stream,elt,flags);/* mark message seen */
+ return mail_fetch_text_return (&md,t,len);
+ }
+ if (!stream->dtb) return ""; /* not in cache, must have live driver */
+ if (stream->dtb->msgdata) return
+ ((*stream->dtb->msgdata) (stream,msgno,"",0,0,NIL,flags) && t->data) ?
+ mail_fetch_text_return (&md,t,len) : "";
+ /* ugh, have to do this the crufty way */
+ u = mail_fetch_header (stream,msgno,NIL,NIL,&i,flags);
+ /* copy in case text method stomps on it */
+ s = (char *) memcpy (fs_get ((size_t) i),u,(size_t) i);
+ if ((*stream->dtb->text) (stream,msgno,&bs,flags)) {
+ t = &stream->text; /* build combined copy */
+ if (t->data) fs_give ((void **) &t->data);
+ t->data = (unsigned char *) fs_get ((t->size = i + SIZE (&bs)) + 1);
+ if (!elt->rfc822_size) elt->rfc822_size = t->size;
+ else if (elt->rfc822_size != t->size) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Calculated RFC822.SIZE (%lu) != reported size (%lu)",
+ t->size,elt->rfc822_size);
+ mm_log (tmp,WARN); /* bug trap */
+ }
+ memcpy (t->data,s,(size_t) i);
+ for (u = (char *) t->data + i, j = SIZE (&bs); j;) {
+ memcpy (u,bs.curpos,bs.cursize);
+ u += bs.cursize; /* update text */
+ j -= bs.cursize;
+ bs.curpos += (bs.cursize -1);
+ bs.cursize = 0;
+ (*bs.dtb->next) (&bs); /* advance to next buffer's worth */
+ }
+ *u = '\0'; /* tie off data */
+ u = mail_fetch_text_return (&md,t,len);
+ }
+ else u = "";
+ fs_give ((void **) &s); /* finished with copy of header */
+ return u;
+}
+\f
+/* Mail fetch message header
+ * Accepts: mail stream
+ * message # to fetch
+ * MIME section specifier (#.#.#...#)
+ * list of lines to fetch
+ * pointer to returned length
+ * flags
+ * Returns: message header in RFC822 format
+ *
+ * Note: never calls a mailgets routine
+ */
+
+char *mail_fetch_header (MAILSTREAM *stream,unsigned long msgno,char *section,
+ STRINGLIST *lines,unsigned long *len,long flags)
+{
+ STRING bs;
+ BODY *b = NIL;
+ SIZEDTEXT *t = NIL,rt;
+ MESSAGE *m = NIL;
+ MESSAGECACHE *elt;
+ char tmp[MAILTMPLEN];
+ if (len) *len = 0; /* default return size */
+ if (section && (strlen (section) > (MAILTMPLEN - 20))) return "";
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return ""; /* must get UID/msgno map first */
+ }
+ elt = mail_elt (stream,msgno);/* get cache data */
+ if (section && *section) { /* nested body header wanted? */
+ if (!((b = mail_body (stream,msgno,section)) &&
+ (b->type == TYPEMESSAGE) && !strcmp (b->subtype,"RFC822")))
+ return ""; /* lose if no body or not MESSAGE/RFC822 */
+ m = b->nested.msg; /* point to nested message */
+ }
+ /* else top-level message header wanted */
+ else m = &elt->private.msg;
+ if (m->header.text.data && mail_match_lines (lines,m->lines,flags)) {
+ if (lines) textcpy (t = &stream->text,&m->header.text);
+ else t = &m->header.text; /* in cache, and cache is valid */
+ markseen (stream,elt,flags);/* mark message seen */
+ }
+\f
+ else if (stream->dtb) { /* not in cache, has live driver? */
+ if (stream->dtb->msgdata) { /* has driver section fetch? */
+ /* build driver section specifier */
+ if (section && *section) sprintf (tmp,"%s.HEADER",section);
+ else strcpy (tmp,"HEADER");
+ if ((*stream->dtb->msgdata) (stream,msgno,tmp,0,0,lines,flags)) {
+ t = &m->header.text; /* fetch data */
+ /* don't need to postprocess lines */
+ if (m->lines) lines = NIL;
+ else if (lines) textcpy (t = &stream->text,&m->header.text);
+ }
+ }
+ else if (b) { /* nested body wanted? */
+ if (stream->private.search.text) {
+ rt.data = (unsigned char *) stream->private.search.text +
+ b->nested.msg->header.offset;
+ rt.size = b->nested.msg->header.text.size;
+ t = &rt;
+ }
+ else if ((*stream->dtb->text) (stream,msgno,&bs,flags & ~FT_INTERNAL)) {
+ if ((bs.dtb->next == mail_string_next) && !lines) {
+ rt.data = (unsigned char *) bs.curpos + b->nested.msg->header.offset;
+ rt.size = b->nested.msg->header.text.size;
+ if (stream->private.search.string)
+ stream->private.search.text = bs.curpos;
+ t = &rt; /* special hack to avoid extra copy */
+ }
+ else textcpyoffstring (t = &stream->text,&bs,
+ b->nested.msg->header.offset,
+ b->nested.msg->header.text.size);
+ }
+ }
+ else { /* top-level header fetch */
+ /* mark message seen */
+ markseen (stream,elt,flags);
+ if (rt.data = (unsigned char *)
+ (*stream->dtb->header) (stream,msgno,&rt.size,flags)) {
+ /* make a safe copy if need to filter */
+ if (lines) textcpy (t = &stream->text,&rt);
+ else t = &rt; /* top level header */
+ }
+ }
+ }
+ if (!t || !t->data) return "";/* error if no string */
+ /* filter headers if requested */
+ if (lines) t->size = mail_filter ((char *) t->data,t->size,lines,flags);
+ if (len) *len = t->size; /* return size if requested */
+ return (char *) t->data; /* and text */
+}
+\f
+/* Mail fetch message text
+ * Accepts: mail stream
+ * message # to fetch
+ * MIME section specifier (#.#.#...#)
+ * pointer to returned length
+ * flags
+ * Returns: message text
+ */
+
+char *mail_fetch_text (MAILSTREAM *stream,unsigned long msgno,char *section,
+ unsigned long *len,long flags)
+{
+ GETS_DATA md;
+ PARTTEXT *p;
+ STRING bs;
+ MESSAGECACHE *elt;
+ BODY *b = NIL;
+ char tmp[MAILTMPLEN];
+ unsigned long i;
+ if (len) *len = 0; /* default return size */
+ memset (&stream->private.string,NIL,sizeof (STRING));
+ if (section && (strlen (section) > (MAILTMPLEN - 20))) return "";
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return ""; /* must get UID/msgno map first */
+ }
+ elt = mail_elt (stream,msgno);/* get cache data */
+ if (section && *section) { /* nested body text wanted? */
+ if (!((b = mail_body (stream,msgno,section)) &&
+ (b->type == TYPEMESSAGE) && !strcmp (b->subtype,"RFC822")))
+ return ""; /* lose if no body or not MESSAGE/RFC822 */
+ p = &b->nested.msg->text; /* point at nested message */
+ /* build IMAP-format section specifier */
+ sprintf (tmp,"%s.TEXT",section);
+ flags &= ~FT_INTERNAL; /* can't win with this set */
+ }
+ else { /* top-level message text wanted */
+ p = &elt->private.msg.text;
+ strcpy (tmp,"TEXT");
+ }
+ /* initialize message data identifier */
+ INIT_GETS (md,stream,msgno,section,0,0);
+ if (p->text.data) { /* is data already cached? */
+ markseen (stream,elt,flags);/* mark message seen */
+ return mail_fetch_text_return (&md,&p->text,len);
+ }
+ if (!stream->dtb) return ""; /* not in cache, must have live driver */
+ if (stream->dtb->msgdata) return
+ ((*stream->dtb->msgdata) (stream,msgno,tmp,0,0,NIL,flags) && p->text.data)?
+ mail_fetch_text_return (&md,&p->text,len) : "";
+ if (!(*stream->dtb->text) (stream,msgno,&bs,flags)) return "";
+ if (section && *section) { /* nested is more complex */
+ SETPOS (&bs,p->offset);
+ i = p->text.size; /* just want this much */
+ }
+ else i = SIZE (&bs); /* want entire text */
+ return mail_fetch_string_return (&md,&bs,i,len,flags);
+}
+\f
+/* Mail fetch message body part MIME headers
+ * Accepts: mail stream
+ * message # to fetch
+ * MIME section specifier (#.#.#...#)
+ * pointer to returned length
+ * flags
+ * Returns: message text
+ */
+
+char *mail_fetch_mime (MAILSTREAM *stream,unsigned long msgno,char *section,
+ unsigned long *len,long flags)
+{
+ PARTTEXT *p;
+ STRING bs;
+ BODY *b;
+ char tmp[MAILTMPLEN];
+ if (len) *len = 0; /* default return size */
+ if (section && (strlen (section) > (MAILTMPLEN - 20))) return "";
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return ""; /* must get UID/msgno map first */
+ }
+ flags &= ~FT_INTERNAL; /* can't win with this set */
+ if (!(section && *section && (b = mail_body (stream,msgno,section))))
+ return ""; /* not valid section */
+ /* in cache? */
+ if ((p = &b->mime)->text.data) {
+ /* mark message seen */
+ markseen (stream,mail_elt (stream,msgno),flags);
+ if (len) *len = p->text.size;
+ return (char *) p->text.data;
+ }
+ if (!stream->dtb) return ""; /* not in cache, must have live driver */
+ if (stream->dtb->msgdata) { /* has driver fetch? */
+ /* build driver section specifier */
+ sprintf (tmp,"%s.MIME",section);
+ if ((*stream->dtb->msgdata) (stream,msgno,tmp,0,0,NIL,flags) &&
+ p->text.data) {
+ if (len) *len = p->text.size;
+ return (char *) p->text.data;
+ }
+ else return "";
+ }
+ if (len) *len = b->mime.text.size;
+ if (!b->mime.text.size) { /* empty MIME header -- mark seen anyway */
+ markseen (stream,mail_elt (stream,msgno),flags);
+ return "";
+ }
+ /* have to get it from offset */
+ if (stream->private.search.text)
+ return stream->private.search.text + b->mime.offset;
+ if (!(*stream->dtb->text) (stream,msgno,&bs,flags)) {
+ if (len) *len = 0;
+ return "";
+ }
+ if (bs.dtb->next == mail_string_next) {
+ if (stream->private.search.string) stream->private.search.text = bs.curpos;
+ return bs.curpos + b->mime.offset;
+ }
+ return textcpyoffstring (&stream->text,&bs,b->mime.offset,b->mime.text.size);
+}
+\f
+/* Mail fetch message body part
+ * Accepts: mail stream
+ * message # to fetch
+ * MIME section specifier (#.#.#...#)
+ * pointer to returned length
+ * flags
+ * Returns: message body
+ */
+
+char *mail_fetch_body (MAILSTREAM *stream,unsigned long msgno,char *section,
+ unsigned long *len,long flags)
+{
+ GETS_DATA md;
+ PARTTEXT *p;
+ STRING bs;
+ BODY *b;
+ SIZEDTEXT *t;
+ char *s,tmp[MAILTMPLEN];
+ memset (&stream->private.string,NIL,sizeof (STRING));
+ if (!(section && *section)) /* top-level text wanted? */
+ return mail_fetch_message (stream,msgno,len,flags);
+ else if (strlen (section) > (MAILTMPLEN - 20)) return "";
+ flags &= ~FT_INTERNAL; /* can't win with this set */
+ /* initialize message data identifier */
+ INIT_GETS (md,stream,msgno,section,0,0);
+ /* kludge for old section 0 header */
+ if (!strcmp (s = strcpy (tmp,section),"0") ||
+ ((s = strstr (tmp,".0")) && !s[2])) {
+ SIZEDTEXT ht;
+ *s = '\0'; /* tie off section */
+ /* this silly way so it does mailgets */
+ ht.data = (unsigned char *) mail_fetch_header (stream,msgno,
+ tmp[0] ? tmp : NIL,NIL,
+ &ht.size,flags);
+ /* may have UIDs here */
+ md.flags = (flags & FT_UID) ? MG_UID : NIL;
+ return mail_fetch_text_return (&md,&ht,len);
+ }
+ if (len) *len = 0; /* default return size */
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return ""; /* must get UID/msgno map first */
+ }
+ /* must have body */
+ if (!(b = mail_body (stream,msgno,section))) return "";
+ /* have cached text? */
+ if ((t = &(p = &b->contents)->text)->data) {
+ /* mark message seen */
+ markseen (stream,mail_elt (stream,msgno),flags);
+ return mail_fetch_text_return (&md,t,len);
+ }
+ if (!stream->dtb) return ""; /* not in cache, must have live driver */
+ if (stream->dtb->msgdata) return
+ ((*stream->dtb->msgdata)(stream,msgno,section,0,0,NIL,flags) && t->data) ?
+ mail_fetch_text_return (&md,t,len) : "";
+ if (len) *len = t->size;
+ if (!t->size) { /* empty body part -- mark seen anyway */
+ markseen (stream,mail_elt (stream,msgno),flags);
+ return "";
+ }
+ /* copy body from stringstruct offset */
+ if (stream->private.search.text)
+ return stream->private.search.text + p->offset;
+ if (!(*stream->dtb->text) (stream,msgno,&bs,flags)) {
+ if (len) *len = 0;
+ return "";
+ }
+ if (bs.dtb->next == mail_string_next) {
+ if (stream->private.search.string) stream->private.search.text = bs.curpos;
+ return bs.curpos + p->offset;
+ }
+ SETPOS (&bs,p->offset);
+ return mail_fetch_string_return (&md,&bs,t->size,len,flags);
+}
+\f
+/* Mail fetch partial message text
+ * Accepts: mail stream
+ * message # to fetch
+ * MIME section specifier (#.#.#...#)
+ * offset of first designed byte or 0 to start at beginning
+ * maximum number of bytes or 0 for all bytes
+ * flags
+ * Returns: T if successful, else NIL
+ */
+
+long mail_partial_text (MAILSTREAM *stream,unsigned long msgno,char *section,
+ unsigned long first,unsigned long last,long flags)
+{
+ GETS_DATA md;
+ PARTTEXT *p = NIL;
+ MESSAGECACHE *elt;
+ STRING bs;
+ BODY *b;
+ char tmp[MAILTMPLEN];
+ unsigned long i;
+ if (!mailgets) fatal ("mail_partial_text() called without a mailgets!");
+ if (section && (strlen (section) > (MAILTMPLEN - 20))) return NIL;
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return NIL; /* must get UID/msgno map first */
+ }
+ elt = mail_elt (stream,msgno);/* get cache data */
+ flags &= ~FT_INTERNAL; /* bogus if this is set */
+ if (section && *section) { /* nested body text wanted? */
+ if (!((b = mail_body (stream,msgno,section)) &&
+ (b->type == TYPEMESSAGE) && !strcmp (b->subtype,"RFC822")))
+ return NIL; /* lose if no body or not MESSAGE/RFC822 */
+ p = &b->nested.msg->text; /* point at nested message */
+ /* build IMAP-format section specifier */
+ sprintf (tmp,"%s.TEXT",section);
+ }
+ else { /* else top-level message text wanted */
+ p = &elt->private.msg.text;
+ strcpy (tmp,"TEXT");
+ }
+\f
+ /* initialize message data identifier */
+ INIT_GETS (md,stream,msgno,tmp,first,last);
+ if (p->text.data) { /* is data already cached? */
+ INIT (&bs,mail_string,p->text.data,i = p->text.size);
+ markseen (stream,elt,flags);/* mark message seen */
+ }
+ else { /* else get data from driver */
+ if (!stream->dtb) return NIL;
+ if (stream->dtb->msgdata) /* driver will handle this */
+ return (*stream->dtb->msgdata) (stream,msgno,tmp,first,last,NIL,flags);
+ if (!(*stream->dtb->text) (stream,msgno,&bs,flags)) return NIL;
+ if (section && *section) { /* nexted if more complex */
+ SETPOS (&bs,p->offset); /* offset stringstruct to data */
+ i = p->text.size; /* maximum size of data */
+ }
+ else i = SIZE (&bs); /* just want this much */
+ }
+ if (i <= first) i = first = 0;/* first byte is beyond end of text */
+ /* truncate as needed */
+ else { /* offset and truncate */
+ SETPOS (&bs,first + GETPOS (&bs));
+ i -= first; /* reduced size */
+ if (last && (i > last)) i = last;
+ }
+ /* do the mailgets thing */
+ (*mailgets) (mail_read,&bs,i,&md);
+ return T; /* success */
+}
+\f
+/* Mail fetch partial message body part
+ * Accepts: mail stream
+ * message # to fetch
+ * MIME section specifier (#.#.#...#)
+ * offset of first designed byte or 0 to start at beginning
+ * maximum number of bytes or 0 for all bytes
+ * flags
+ * Returns: T if successful, else NIL
+ */
+
+long mail_partial_body (MAILSTREAM *stream,unsigned long msgno,char *section,
+ unsigned long first,unsigned long last,long flags)
+{
+ GETS_DATA md;
+ PARTTEXT *p;
+ STRING bs;
+ BODY *b;
+ SIZEDTEXT *t;
+ unsigned long i;
+ if (!(section && *section)) /* top-level text wanted? */
+ return mail_partial_text (stream,msgno,NIL,first,last,flags);
+ if (!mailgets) fatal ("mail_partial_body() called without a mailgets!");
+ if (flags & FT_UID) { /* UID form of call */
+ if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ else return NIL; /* must get UID/msgno map first */
+ }
+ /* must have body */
+ if (!(b = mail_body (stream,msgno,section))) return NIL;
+ flags &= ~FT_INTERNAL; /* bogus if this is set */
+\f
+ /* initialize message data identifier */
+ INIT_GETS (md,stream,msgno,section,first,last);
+ /* have cached text? */
+ if ((t = &(p = &b->contents)->text)->data) {
+ /* mark message seen */
+ markseen (stream,mail_elt (stream,msgno),flags);
+ INIT (&bs,mail_string,t->data,i = t->size);
+ }
+ else { /* else get data from driver */
+ if (!stream->dtb) return NIL;
+ if (stream->dtb->msgdata) /* driver will handle this */
+ return (*stream->dtb->msgdata) (stream,msgno,section,first,last,NIL,
+ flags);
+ if (!(*stream->dtb->text) (stream,msgno,&bs,flags)) return NIL;
+ if (section && *section) { /* nexted if more complex */
+ SETPOS (&bs,p->offset); /* offset stringstruct to data */
+ i = t->size; /* maximum size of data */
+ }
+ else i = SIZE (&bs); /* just want this much */
+ }
+ if (i <= first) i = first = 0;/* first byte is beyond end of text */
+ else { /* offset and truncate */
+ SETPOS (&bs,first + GETPOS (&bs));
+ i -= first; /* reduced size */
+ if (last && (i > last)) i = last;
+ }
+ /* do the mailgets thing */
+ (*mailgets) (mail_read,&bs,i,&md);
+ return T; /* success */
+}
+\f
+/* Mail return message text
+ * Accepts: identifier data
+ * sized text
+ * pointer to returned length
+ * Returns: text
+ */
+
+char *mail_fetch_text_return (GETS_DATA *md,SIZEDTEXT *t,unsigned long *len)
+{
+ STRING bs;
+ if (len) *len = t->size; /* return size */
+ if (t->size && mailgets) { /* have to do the mailgets thing? */
+ /* silly but do it anyway for consistency */
+ INIT (&bs,mail_string,t->data,t->size);
+ return (*mailgets) (mail_read,&bs,t->size,md);
+ }
+ return t->size ? (char *) t->data : "";
+}
+
+
+/* Mail return message string
+ * Accepts: identifier data
+ * stringstruct
+ * text length
+ * pointer to returned length
+ * flags
+ * Returns: text, or NIL if stringstruct returned
+ */
+
+char *mail_fetch_string_return (GETS_DATA *md,STRING *bs,unsigned long i,
+ unsigned long *len,long flags)
+{
+ char *ret = NIL;
+ if (len) *len = i; /* return size */
+ /* return stringstruct hack */
+ if (flags & FT_RETURNSTRINGSTRUCT) {
+ memcpy (&md->stream->private.string,bs,sizeof (STRING));
+ SETPOS (&md->stream->private.string,GETPOS (&md->stream->private.string));
+ }
+ /* have to do the mailgets thing? */
+ else if (mailgets) ret = (*mailgets) (mail_read,bs,i,md);
+ /* special hack to avoid extra copy */
+ else if (bs->dtb->next == mail_string_next) ret = bs->curpos;
+ /* make string copy in memory */
+ else ret = textcpyoffstring (&md->stream->text,bs,GETPOS (bs),i);
+ return ret;
+}
+\f
+/* Read data from stringstruct
+ * Accepts: stringstruct
+ * size of data to read
+ * buffer to read into
+ * Returns: T, always, stringstruct updated
+ */
+
+long mail_read (void *stream,unsigned long size,char *buffer)
+{
+ unsigned long i;
+ STRING *s = (STRING *) stream;
+ while (size) { /* until satisfied */
+ memcpy (buffer,s->curpos,i = min (s->cursize,size));
+ buffer += i; /* update buffer */
+ size -= i; /* note that we read this much */
+ s->curpos += --i; /* advance that many spaces minus 1 */
+ s->cursize -= i;
+ SNX (s); /* now use SNX to advance the last byte */
+ }
+ return T;
+}
+\f
+/* Mail fetch UID
+ * Accepts: mail stream
+ * message number
+ * Returns: UID or zero if dead stream
+ */
+
+unsigned long mail_uid (MAILSTREAM *stream,unsigned long msgno)
+{
+ unsigned long uid = mail_elt (stream,msgno)->private.uid;
+ return uid ? uid :
+ (stream->dtb && stream->dtb->uid) ? (*stream->dtb->uid) (stream,msgno) : 0;
+}
+
+
+/* Mail fetch msgno from UID
+ * Accepts: mail stream
+ * UID
+ * Returns: msgno or zero if failed
+ */
+
+unsigned long mail_msgno (MAILSTREAM *stream,unsigned long uid)
+{
+ unsigned long msgno,delta,first,firstuid,last,lastuid,middle,miduid;
+ if (stream->dtb) { /* active stream? */
+ if (stream->dtb->msgno) /* direct way */
+ return (*stream->dtb->msgno) (stream,uid);
+ else if (stream->dtb->uid) {/* indirect way */
+ /* Placeholder for now, since currently there are no drivers which
+ * have a uid method but not a msgno method
+ */
+ for (msgno = 1; msgno <= stream->nmsgs; msgno++)
+ if ((*stream->dtb->uid) (stream,msgno) == uid) return msgno;
+ }
+ /* binary search since have full map */
+ else for (first = 1,last = stream->nmsgs, delta = (first <= last) ? 1 : 0;
+ delta &&
+ (uid >= (firstuid = mail_elt (stream,first)->private.uid)) &&
+ (uid <= (lastuid = mail_elt (stream,last)->private.uid));) {
+ /* done if match at an endpoint */
+ if (uid == firstuid) return first;
+ if (uid == lastuid) return last;
+ /* have anything between endpoints? */
+ if (delta = ((last - first) / 2)) {
+ if ((miduid = mail_elt (stream,middle = first + delta)->private.uid)
+ == uid)
+ return middle; /* found match in middle */
+ else if (uid < miduid) last = middle - 1;
+ else first = middle + 1;
+ }
+ }
+ }
+ else { /* dead stream, do linear search for UID */
+ for (msgno = 1; msgno <= stream->nmsgs; msgno++)
+ if (mail_elt (stream,msgno)->private.uid == uid) return msgno;
+ }
+ return 0; /* didn't find the UID anywhere */
+}
+\f
+/* Mail fetch From string for menu
+ * Accepts: destination string
+ * mail stream
+ * message # to fetch
+ * desired string length
+ * Returns: string of requested length
+ */
+
+void mail_fetchfrom (char *s,MAILSTREAM *stream,unsigned long msgno,
+ long length)
+{
+ char *t;
+ char tmp[MAILTMPLEN];
+ ENVELOPE *env = mail_fetchenvelope (stream,msgno);
+ ADDRESS *adr = env ? env->from : NIL;
+ memset (s,' ',(size_t)length);/* fill it with spaces */
+ s[length] = '\0'; /* tie off with null */
+ /* get first from address from envelope */
+ while (adr && !adr->host) adr = adr->next;
+ if (adr) { /* if a personal name exists use it */
+ if (!(t = adr->personal))
+ sprintf (t = tmp,"%.256s@%.256s",adr->mailbox,adr->host);
+ memcpy (s,t,(size_t) min (length,(long) strlen (t)));
+ }
+}
+
+
+/* Mail fetch Subject string for menu
+ * Accepts: destination string
+ * mail stream
+ * message # to fetch
+ * desired string length
+ * Returns: string of no more than requested length
+ */
+
+void mail_fetchsubject (char *s,MAILSTREAM *stream,unsigned long msgno,
+ long length)
+{
+ ENVELOPE *env = mail_fetchenvelope (stream,msgno);
+ memset (s,'\0',(size_t) length+1);
+ /* copy subject from envelope */
+ if (env && env->subject) strncpy (s,env->subject,(size_t) length);
+ else *s = ' '; /* if no subject then just a space */
+}
+\f
+/* Mail modify flags
+ * Accepts: mail stream
+ * sequence
+ * flag(s)
+ * option flags
+ */
+
+void mail_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
+{
+ MESSAGECACHE *elt;
+ unsigned long i,uf;
+ long f;
+ short nf;
+ if (!stream->dtb) return; /* no-op if no stream */
+ if ((stream->dtb->flagmsg || !stream->dtb->flag) &&
+ ((flags & ST_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence)) &&
+ ((f = mail_parse_flags (stream,flag,&uf)) || uf))
+ for (i = 1,nf = (flags & ST_SET) ? T : NIL; i <= stream->nmsgs; i++)
+ if ((elt = mail_elt (stream,i))->sequence) {
+ struct { /* old flags */
+ unsigned int valid : 1;
+ unsigned int seen : 1;
+ unsigned int deleted : 1;
+ unsigned int flagged : 1;
+ unsigned int answered : 1;
+ unsigned int draft : 1;
+ unsigned long user_flags;
+ } old;
+ old.valid = elt->valid; old.seen = elt->seen;
+ old.deleted = elt->deleted; old.flagged = elt->flagged;
+ old.answered = elt->answered; old.draft = elt->draft;
+ old.user_flags = elt->user_flags;
+ elt->valid = NIL; /* prepare for flag alteration */
+ if (stream->dtb->flagmsg) (*stream->dtb->flagmsg) (stream,elt);
+ if (f&fSEEN) elt->seen = nf;
+ if (f&fDELETED) elt->deleted = nf;
+ if (f&fFLAGGED) elt->flagged = nf;
+ if (f&fANSWERED) elt->answered = nf;
+ if (f&fDRAFT) elt->draft = nf;
+ /* user flags */
+ if (flags & ST_SET) elt->user_flags |= uf;
+ else elt->user_flags &= ~uf;
+ elt->valid = T; /* flags now altered */
+ if ((old.valid != elt->valid) || (old.seen != elt->seen) ||
+ (old.deleted != elt->deleted) || (old.flagged != elt->flagged) ||
+ (old.answered != elt->answered) || (old.draft != elt->draft) ||
+ (old.user_flags != elt->user_flags))
+ MM_FLAGS (stream,elt->msgno);
+ if (stream->dtb->flagmsg) (*stream->dtb->flagmsg) (stream,elt);
+ }
+ /* call driver once */
+ if (stream->dtb->flag) (*stream->dtb->flag) (stream,sequence,flag,flags);
+}
+\f
+/* Mail search for messages
+ * Accepts: mail stream
+ * character set
+ * search program
+ * option flags
+ * Returns: T if successful, NIL if dead stream, NIL searchpgm or bad charset
+ */
+
+long mail_search_full (MAILSTREAM *stream,char *charset,SEARCHPGM *pgm,
+ long flags)
+{
+ unsigned long i;
+ long ret = NIL;
+ if (!(flags & SE_RETAIN)) /* clear search vector unless retaining */
+ for (i = 1; i <= stream->nmsgs; ++i) mail_elt (stream,i)->searched = NIL;
+ if (pgm && stream->dtb) /* must have a search program and driver */
+ ret = (*(stream->dtb->search ? stream->dtb->search : mail_search_default))
+ (stream,charset,pgm,flags);
+ /* flush search program if requested */
+ if (flags & SE_FREE) mail_free_searchpgm (&pgm);
+ return ret;
+}
+
+
+/* Mail search for messages default handler
+ * Accepts: mail stream
+ * character set
+ * search program
+ * option flags
+ * Returns: T if successful, NIL if bad charset
+ */
+
+long mail_search_default (MAILSTREAM *stream,char *charset,SEARCHPGM *pgm,
+ long flags)
+{
+ unsigned long i;
+ char *msg;
+ /* make sure that charset is good */
+ if (msg = utf8_badcharset (charset)) {
+ MM_LOG (msg,ERROR); /* output error */
+ fs_give ((void **) &msg);
+ return NIL;
+ }
+ utf8_searchpgm (pgm,charset);
+ for (i = 1; i <= stream->nmsgs; ++i)
+ if (mail_search_msg (stream,i,NIL,pgm)) {
+ if (flags & SE_UID) mm_searched (stream,mail_uid (stream,i));
+ else { /* mark as searched, notify mail program */
+ mail_elt (stream,i)->searched = T;
+ if (!stream->silent) mm_searched (stream,i);
+ }
+ }
+ return LONGT; /* search completed */
+}
+\f
+/* Mail ping mailbox
+ * Accepts: mail stream
+ * Returns: stream if still open else NIL
+ */
+
+long mail_ping (MAILSTREAM *stream)
+{
+ unsigned long i,n,uf,len;
+ char *s,*f,tmp[MAILTMPLEN],flags[MAILTMPLEN];
+ MAILSTREAM *snarf;
+ MESSAGECACHE *elt;
+ STRING bs;
+ long ret;
+ /* do driver action */
+ if ((ret = ((stream && stream->dtb) ? (stream->dtb->ping) (stream) : NIL)) &&
+ stream->snarf.name && /* time to snarf? */
+ /* prohibit faster than once/min */
+ (time (0) > (time_t) (stream->snarf.time + min(60,mailsnarfinterval))) &&
+ (snarf = mail_open (NIL,stream->snarf.name,
+ stream->snarf.options | OP_SILENT))) {
+ if ((n = snarf->nmsgs) && /* yes, have messages to snarf? */
+ mail_search_full (snarf,NIL,mail_criteria ("UNDELETED"),SE_FREE)) {
+ for (i = 1; ret && (i <= n); i++) /* for each message */
+ if ((elt = mail_elt (snarf,i))->searched &&
+ (s = mail_fetch_message (snarf,i,&len,FT_PEEK)) && len) {
+ INIT (&bs,mail_string,s,len);
+ if (mailsnarfpreserve) {
+ /* yes, make sure have fast data */
+ if (!elt->valid || !elt->day) {
+ sprintf (tmp,"%lu",n);
+ mail_fetch_fast (snarf,tmp,NIL);
+ }
+ /* initialize flag string */
+ memset (flags,0,MAILTMPLEN);
+ /* output system flags except \Deleted */
+ if (elt->seen) strcat (flags," \\Seen");
+ if (elt->flagged) strcat (flags," \\Flagged");
+ if (elt->answered) strcat (flags," \\Answered");
+ if (elt->draft) strcat (flags," \\Draft");
+ /* any user flags? */
+ for (uf = elt->user_flags,s = flags + strlen (flags);
+ uf && (f = stream->user_flags[find_rightmost_bit (&uf)]) &&
+ ((MAILTMPLEN - (s - tmp)) > (long) (2 + strlen (f)));
+ s += strlen (s)) sprintf (s," %s",f);
+ ret = mail_append_full (stream,stream->mailbox,flags + 1,
+ mail_date (tmp,elt),&bs);
+ }
+ else ret = mail_append (stream,stream->mailbox,&bs);
+\f
+ if (ret) { /* did snarf succeed? */
+ /* driver has per-message (or no) flag call */
+ if (snarf->dtb->flagmsg || !snarf->dtb->flag) {
+ elt->valid = NIL; /* prepare for flag alteration */
+ if (snarf->dtb->flagmsg) (*snarf->dtb->flagmsg) (snarf,elt);
+ /* flags now altered */
+ elt->deleted = elt->seen = elt->valid = T;
+ if (snarf->dtb->flagmsg) (*snarf->dtb->flagmsg) (snarf,elt);
+ }
+ /* driver has one-time flag call */
+ if (snarf->dtb->flag) {
+ sprintf (tmp,"%lu",i);
+ (*snarf->dtb->flag) (snarf,tmp,"\\Deleted \\Seen",ST_SET);
+ }
+ }
+ else { /* copy failed */
+ sprintf (tmp,"Unable to move message %lu from %s mailbox",
+ i,snarf->dtb->name);
+ mm_log (tmp,WARN);
+ }
+ }
+ }
+ /* expunge the messages */
+ mail_close_full (snarf,n ? CL_EXPUNGE : NIL);
+ stream->snarf.time = (unsigned long) time (0);
+ /* Even if the snarf failed, we don't want to return NIL if the stream
+ * is still alive. Or at least that's what we currently think.
+ */
+ /* redo the driver's action */
+ ret = stream->dtb ? (*stream->dtb->ping) (stream) : NIL;
+ }
+ return ret;
+}
+\f
+/* Mail check mailbox
+ * Accepts: mail stream
+ */
+
+void mail_check (MAILSTREAM *stream)
+{
+ /* do the driver's action */
+ if (stream->dtb) (*stream->dtb->check) (stream);
+}
+
+
+/* Mail expunge mailbox
+ * Accepts: mail stream
+ * sequence to expunge if non-NIL
+ * expunge options
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_expunge_full (MAILSTREAM *stream,char *sequence,long options)
+{
+ /* do the driver's action */
+ return stream->dtb ? (*stream->dtb->expunge) (stream,sequence,options) : NIL;
+}
+
+
+/* Mail copy message(s)
+ * Accepts: mail stream
+ * sequence
+ * destination mailbox
+ * flags
+ */
+
+long mail_copy_full (MAILSTREAM *stream,char *sequence,char *mailbox,
+ long options)
+{
+ return SAFE_COPY (stream->dtb,stream,sequence,mailbox,options);
+}
+\f
+/* Append data package to use for old single-message mail_append() interface */
+
+typedef struct mail_append_package {
+ char *flags; /* initial flags */
+ char *date; /* message internal date */
+ STRING *message; /* stringstruct of message */
+} APPENDPACKAGE;
+
+
+/* Single append message string
+ * Accepts: mail stream
+ * package pointer (cast as a void *)
+ * pointer to return initial flags
+ * pointer to return message internal date
+ * pointer to return stringstruct of message to append
+ * Returns: T, always
+ */
+
+static long mail_append_single (MAILSTREAM *stream,void *data,char **flags,
+ char **date,STRING **message)
+{
+ APPENDPACKAGE *ap = (APPENDPACKAGE *) data;
+ *flags = ap->flags; /* get desired data from the package */
+ *date = ap->date;
+ *message = ap->message;
+ ap->message = NIL; /* so next callback puts a stop to it */
+ return LONGT; /* always return success */
+}
+
+
+/* Mail append message string
+ * Accepts: mail stream
+ * destination mailbox
+ * initial flags
+ * message internal date
+ * stringstruct of message to append
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_append_full (MAILSTREAM *stream,char *mailbox,char *flags,char *date,
+ STRING *message)
+{
+ APPENDPACKAGE ap;
+ ap.flags = flags; /* load append package */
+ ap.date = date;
+ ap.message = message;
+ return mail_append_multiple (stream,mailbox,mail_append_single,(void *) &ap);
+}
+\f
+/* Mail append message(s)
+ * Accepts: mail stream
+ * destination mailbox
+ * append data callback
+ * arbitrary data for callback use
+ * Returns: T on success, NIL on failure
+ */
+
+long mail_append_multiple (MAILSTREAM *stream,char *mailbox,append_t af,
+ void *data)
+{
+ char *s,tmp[MAILTMPLEN];
+ DRIVER *d = NIL;
+ long ret = NIL;
+ /* never allow names with newlines */
+ if (strpbrk (mailbox,"\015\012"))
+ MM_LOG ("Can't append to mailbox with such a name",ERROR);
+ else if (strlen (mailbox) >=
+ (NETMAXHOST+(NETMAXUSER*2)+NETMAXMBX+NETMAXSRV+50)) {
+ sprintf (tmp,"Can't append %.80s: %s",mailbox,(*mailbox == '{') ?
+ "invalid remote specification" : "no such mailbox");
+ MM_LOG (tmp,ERROR);
+ }
+ /* special driver hack? */
+ else if (!strncmp (lcase (strcpy (tmp,mailbox)),"#driver.",8)) {
+ /* yes, tie off name at likely delimiter */
+ if (!(s = strpbrk (tmp+8,"/\\:"))) {
+ sprintf (tmp,"Can't append to mailbox %.80s: bad driver syntax",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ *s++ = '\0'; /* tie off at delimiter */
+ if (!(d = (DRIVER *) mail_parameters (NIL,GET_DRIVER,tmp+8))) {
+ sprintf (tmp,"Can't append to mailbox %.80s: unknown driver",mailbox);
+ MM_LOG (tmp,ERROR);
+ }
+ else ret = SAFE_APPEND (d,stream,mailbox + (s - tmp),af,data);
+ }
+ else if (d = mail_valid (stream,mailbox,NIL))
+ ret = SAFE_APPEND (d,stream,mailbox,af,data);
+ /* No driver, try for TRYCREATE if no stream. Note that we use the
+ * createProto here, not the appendProto, since the dummy driver already
+ * took care of the appendProto case. Otherwise, if appendProto is set to
+ * NIL, we won't get a TRYCREATE.
+ */
+ else if (!stream && (stream = default_proto (NIL)) &&
+ SAFE_APPEND (stream->dtb,stream,mailbox,af,data))
+ /* timing race? */
+ MM_NOTIFY (stream,"Append validity confusion",WARN);
+ /* generate error message */
+ else mail_valid (stream,mailbox,"append to mailbox");
+ return ret;
+}
+\f
+/* Mail garbage collect stream
+ * Accepts: mail stream
+ * garbage collection flags
+ */
+
+void mail_gc (MAILSTREAM *stream,long gcflags)
+{
+ MESSAGECACHE *elt;
+ unsigned long i;
+ /* do the driver's action first */
+ if (stream->dtb && stream->dtb->gc) (*stream->dtb->gc) (stream,gcflags);
+ stream->msgno = 0; /* nothing cached now */
+ if (gcflags & GC_ENV) { /* garbage collect envelopes? */
+ if (stream->env) mail_free_envelope (&stream->env);
+ if (stream->body) mail_free_body (&stream->body);
+ }
+ if (gcflags & GC_TEXTS) { /* free texts */
+ if (stream->text.data) fs_give ((void **) &stream->text.data);
+ stream->text.size = 0;
+ }
+ /* garbage collect per-message stuff */
+ for (i = 1; i <= stream->nmsgs; i++)
+ if (elt = (MESSAGECACHE *) (*mailcache) (stream,i,CH_ELT))
+ mail_gc_msg (&elt->private.msg,gcflags);
+}
+
+
+/* Mail garbage collect message
+ * Accepts: message structure
+ * garbage collection flags
+ */
+
+void mail_gc_msg (MESSAGE *msg,long gcflags)
+{
+ if (gcflags & GC_ENV) { /* garbage collect envelopes? */
+ mail_free_envelope (&msg->env);
+ mail_free_body (&msg->body);
+ }
+ if (gcflags & GC_TEXTS) { /* garbage collect texts */
+ if (msg->full.text.data) fs_give ((void **) &msg->full.text.data);
+ if (msg->header.text.data) {
+ mail_free_stringlist (&msg->lines);
+ fs_give ((void **) &msg->header.text.data);
+ }
+ if (msg->text.text.data) fs_give ((void **) &msg->text.text.data);
+ /* now GC all body components */
+ if (msg->body) mail_gc_body (msg->body);
+ }
+}
+\f
+/* Mail garbage collect texts in BODY structure
+ * Accepts: BODY structure
+ */
+
+void mail_gc_body (BODY *body)
+{
+ PART *part;
+ switch (body->type) { /* free contents */
+ case TYPEMULTIPART: /* multiple part */
+ for (part = body->nested.part; part; part = part->next)
+ mail_gc_body (&part->body);
+ break;
+ case TYPEMESSAGE: /* encapsulated message */
+ if (body->subtype && !strcmp (body->subtype,"RFC822")) {
+ mail_free_stringlist (&body->nested.msg->lines);
+ mail_gc_msg (body->nested.msg,GC_TEXTS);
+ }
+ break;
+ default:
+ break;
+ }
+ if (body->mime.text.data) fs_give ((void **) &body->mime.text.data);
+ if (body->contents.text.data) fs_give ((void **) &body->contents.text.data);
+}
+\f
+/* Mail get body part
+ * Accepts: mail stream
+ * message number
+ * section specifier
+ * Returns: pointer to body
+ */
+
+BODY *mail_body (MAILSTREAM *stream,unsigned long msgno,unsigned char *section)
+{
+ BODY *b = NIL;
+ PART *pt;
+ unsigned long i;
+ /* make sure have a body */
+ if (section && *section && mail_fetchstructure (stream,msgno,&b) && b)
+ while (*section) { /* find desired section */
+ if (isdigit (*section)) { /* get section specifier */
+ /* make sure what follows is valid */
+ if (!(i = strtoul (section,(char **) §ion,10)) ||
+ (*section && ((*section++ != '.') || !*section))) return NIL;
+ /* multipart content? */
+ if (b->type == TYPEMULTIPART) {
+ /* yes, find desired part */
+ if (pt = b->nested.part) while (--i && (pt = pt->next));
+ if (!pt) return NIL; /* bad specifier */
+ b = &pt->body; /* note new body */
+ }
+ /* otherwise must be section 1 */
+ else if (i != 1) return NIL;
+ /* need to go down further? */
+ if (*section) switch (b->type) {
+ case TYPEMULTIPART: /* multipart */
+ break;
+ case TYPEMESSAGE: /* embedded message */
+ if (!strcmp (b->subtype,"RFC822")) {
+ b = b->nested.msg->body;
+ break;
+ }
+ default: /* bogus subpart specification */
+ return NIL;
+ }
+ }
+ else return NIL; /* unknown section specifier */
+ }
+ return b;
+}
+\f
+/* Mail output date from elt fields
+ * Accepts: character string to write into
+ * elt to get data data from
+ * Returns: the character string
+ */
+
+const char *days[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
+
+const char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+
+char *mail_date (char *string,MESSAGECACHE *elt)
+{
+ sprintf (string,"%2d-%s-%d %02d:%02d:%02d %c%02d%02d",
+ elt->day ? elt->day : 1,
+ months[elt->month ? (elt->month - 1) : 0],
+ elt->year + BASEYEAR,elt->hours,elt->minutes,elt->seconds,
+ elt->zoccident ? '-' : '+',elt->zhours,elt->zminutes);
+ return string;
+}
+
+
+/* Mail output extended-ctime format date from elt fields
+ * Accepts: character string to write into
+ * elt to get data data from
+ * Returns: the character string
+ */
+
+char *mail_cdate (char *string,MESSAGECACHE *elt)
+{
+ char *fmt = "%s %s %2d %02d:%02d:%02d %4d %s%02d%02d\n";
+ int d = elt->day ? elt->day : 1;
+ int m = elt->month ? (elt->month - 1) : 0;
+ int y = elt->year + BASEYEAR;
+ const char *s = months[m];
+ if (m < 2) { /* if before March, */
+ m += 10; /* January = month 10 of previous year */
+ y--;
+ }
+ else m -= 2; /* March is month 0 */
+ sprintf (string,fmt,days[(int) (d + 2 + ((7 + 31 * m) / 12)
+#ifndef USEJULIANCALENDAR
+#ifndef USEORTHODOXCALENDAR /* Gregorian calendar */
+ + (y / 400)
+#ifdef Y4KBUGFIX
+ - (y / 4000)
+#endif
+#else /* Orthodox calendar */
+ + (2 * (y / 900)) + ((y % 900) >= 200)
+ + ((y % 900) >= 600)
+#endif
+ - (y / 100)
+#endif
+ + y + (y / 4)) % 7],
+ s,d,elt->hours,elt->minutes,elt->seconds,elt->year + BASEYEAR,
+ elt->zoccident ? "-" : "+",elt->zhours,elt->zminutes);
+ return string;
+}
+\f
+/* Mail parse date into elt fields
+ * Accepts: elt to write into
+ * date string to parse
+ * Returns: T if parse successful, else NIL
+ * This routine parses dates as follows:
+ * . leading three alphas followed by comma and space are ignored
+ * . date accepted in format: mm/dd/yy, mm/dd/yyyy, dd-mmm-yy, dd-mmm-yyyy,
+ * dd mmm yy, dd mmm yyyy, yyyy-mm-dd, yyyymmdd
+ * . two and three digit years interpreted according to RFC 2822 rules
+ * . mandatory end of string if yyyy-mm-dd or yyyymmdd; otherwise optional
+ * space followed by time:
+ * . time accepted in format hh:mm:ss or hh:mm
+ * . end of string accepted
+ * . timezone accepted: hyphen followed by symbolic timezone, or space
+ * followed by signed numeric timezone or symbolic timezone
+ * Examples of normal input:
+ * . IMAP date-only (SEARCH):
+ * dd-mmm-yyyy
+ * . IMAP date-time (INTERNALDATE):
+ * dd-mmm-yyyy hh:mm:ss +zzzz
+ * . RFC-822:
+ * www, dd mmm yy hh:mm:ss zzz
+ * . RFC-2822:
+ * www, dd mmm yyyy hh:mm:ss +zzzz
+ */
+
+long mail_parse_date (MESSAGECACHE *elt,unsigned char *s)
+{
+ unsigned long d,m,y;
+ int mi,ms;
+ struct tm *t;
+ time_t tn;
+ char tmp[MAILTMPLEN];
+ static unsigned long maxyear = 0;
+ if (!maxyear) { /* know the end of time yet? */
+ MESSAGECACHE tmpelt;
+ memset (&tmpelt,0xff,sizeof (MESSAGECACHE));
+ maxyear = BASEYEAR + tmpelt.year;
+ }
+ /* clear elt */
+ elt->zoccident = elt->zhours = elt->zminutes =
+ elt->hours = elt->minutes = elt->seconds =
+ elt->day = elt->month = elt->year = 0;
+ /* make a writeable uppercase copy */
+ if (s && *s && (strlen (s) < (size_t)MAILTMPLEN)) s = ucase (strcpy (tmp,s));
+ else return NIL;
+ /* skip over possible day of week */
+ if (isalpha (*s) && isalpha (s[1]) && isalpha (s[2]) && (s[3] == ',') &&
+ (s[4] == ' ')) s += 5;
+ while (*s == ' ') s++; /* parse first number (probable month) */
+ if (!(m = strtoul (s,(char **) &s,10))) return NIL;
+\f
+ switch (*s) { /* different parse based on delimiter */
+ case '/': /* mm/dd/yy format */
+ if (isdigit (*++s) && (d = strtoul (s,(char **) &s,10)) &&
+ (*s == '/') && isdigit (*++s)) {
+ y = strtoul (s,(char **) &s,10);
+ if (*s == '\0') break; /* must end here */
+ }
+ return NIL; /* bogon */
+ case ' ': /* dd mmm yy format */
+ while (s[1] == ' ') s++; /* slurp extra whitespace */
+ case '-':
+ if (isdigit (s[1])) { /* possible ISO 8601 date format? */
+ y = m; /* yes, first number is year */
+ /* get month and day */
+ if ((m = strtoul (s+1,(char **) &s,10)) && (*s++ == '-') &&
+ (d = strtoul (s,(char **) &s,10)) && !*s) break;
+ return NIL; /* syntax error or time present */
+ }
+ d = m; /* dd-mmm-yy[yy], so first number is a day */
+ /* make sure string long enough! */
+ if (strlen (s) < (size_t) 5) return NIL;
+ /* Some compilers don't allow `<<' and/or longs in case statements. */
+ /* slurp up the month string */
+ ms = ((s[1] - 'A') * 1024) + ((s[2] - 'A') * 32) + (s[3] - 'A');
+ switch (ms) { /* determine the month */
+ case (('J'-'A') * 1024) + (('A'-'A') * 32) + ('N'-'A'): m = 1; break;
+ case (('F'-'A') * 1024) + (('E'-'A') * 32) + ('B'-'A'): m = 2; break;
+ case (('M'-'A') * 1024) + (('A'-'A') * 32) + ('R'-'A'): m = 3; break;
+ case (('A'-'A') * 1024) + (('P'-'A') * 32) + ('R'-'A'): m = 4; break;
+ case (('M'-'A') * 1024) + (('A'-'A') * 32) + ('Y'-'A'): m = 5; break;
+ case (('J'-'A') * 1024) + (('U'-'A') * 32) + ('N'-'A'): m = 6; break;
+ case (('J'-'A') * 1024) + (('U'-'A') * 32) + ('L'-'A'): m = 7; break;
+ case (('A'-'A') * 1024) + (('U'-'A') * 32) + ('G'-'A'): m = 8; break;
+ case (('S'-'A') * 1024) + (('E'-'A') * 32) + ('P'-'A'): m = 9; break;
+ case (('O'-'A') * 1024) + (('C'-'A') * 32) + ('T'-'A'): m = 10; break;
+ case (('N'-'A') * 1024) + (('O'-'A') * 32) + ('V'-'A'): m = 11; break;
+ case (('D'-'A') * 1024) + (('E'-'A') * 32) + ('C'-'A'): m = 12; break;
+ default: return NIL; /* unknown month */
+ }
+ if (s[4] == *s) s += 5; /* advance to year */
+ else { /* first three were OK, possibly full name */
+ mi = *s; /* note delimiter, skip alphas */
+ for (s += 4; isalpha (*s); s++);
+ /* error if delimiter not here */
+ if (mi != *s++) return NIL;
+ }
+ while (*s == ' ') s++; /* parse year */
+ if (isdigit (*s)) { /* must be a digit here */
+ y = strtoul (s,(char **) &s,10);
+ if (*s == '\0' || *s == ' ') break;
+ }
+ case '\0': /* ISO 8601 compact date */
+ if (m < (BASEYEAR * 10000)) return NIL;
+ y = m / 10000; /* get year */
+ d = (m %= 10000) % 100; /* get day */
+ m /= 100; /* and month */
+ break;
+ default:
+ return NIL; /* unknown date format */
+ }
+\f
+ /* minimal validity check of date */
+ if ((d > 31) || (m > 12)) return NIL;
+ if (y < 49) y += 2000; /* RFC 2282 rules for two digit years 00-49 */
+ else if (y < 999) y += 1900; /* 2-digit years 50-99 and 3-digit years */
+ /* reject prehistoric and far future years */
+ if ((y < BASEYEAR) || (y > maxyear)) return NIL;
+ /* set values in elt */
+ elt->day = d; elt->month = m; elt->year = y - BASEYEAR;
+ ms = '\0'; /* initially no time zone string */
+ if (*s) { /* time specification present? */
+ /* parse time */
+ d = strtoul (s+1,(char **) &s,10);
+ if (*s != ':') return NIL;
+ m = strtoul (++s,(char **) &s,10);
+ y = (*s == ':') ? strtoul (++s,(char **) &s,10) : 0;
+ /* validity check time */
+ if ((d > 23) || (m > 59) || (y > 60)) return NIL;
+ /* set values in elt */
+ elt->hours = d; elt->minutes = m; elt->seconds = y;
+ switch (*s) { /* time zone specifier? */
+ case ' ': /* numeric time zone */
+ while (s[1] == ' ') s++; /* slurp extra whitespace */
+ if (!isalpha (s[1])) { /* treat as '-' case if alphabetic */
+ /* test for sign character */
+ if ((elt->zoccident = (*++s == '-')) || (*s == '+')) s++;
+ /* validate proper timezone */
+ if (isdigit(*s) && isdigit(s[1]) && isdigit(s[2]) && (s[2] < '6') &&
+ isdigit(s[3])) {
+ elt->zhours = (*s - '0') * 10 + (s[1] - '0');
+ elt->zminutes = (s[2] - '0') * 10 + (s[3] - '0');
+ }
+ return T; /* all done! */
+ }
+ /* falls through */
+ case '-': /* symbolic time zone */
+ if (!(ms = *++s)) ms = 'Z';
+ else if (*++s) { /* multi-character? */
+ ms -= 'A'; ms *= 1024; /* yes, make compressed three-byte form */
+ ms += ((*s++ - 'A') * 32);
+ if (*s) ms += *s++ - 'A';
+ if (*s) ms = '\0'; /* more than three characters */
+ }
+ default: /* ignore anything else */
+ break;
+ }
+ }
+\f
+ /* This is not intended to be a comprehensive list of all possible
+ * timezone strings. Such a list would be impractical. Rather, this
+ * listing is intended to incorporate all military, North American, and
+ * a few special cases such as Japan and the major European zone names,
+ * such as what might be expected to be found in a Tenex format mailbox
+ * and spewed from an IMAP server. The trend is to migrate to numeric
+ * timezones which lack the flavor but also the ambiguity of the names.
+ *
+ * RFC-822 only recognizes UT, GMT, 1-letter military timezones, and the
+ * 4 CONUS timezones and their summer time variants. [Sorry, Canadian
+ * Atlantic Provinces, Alaska, and Hawaii.]
+ */
+ switch (ms) { /* determine the timezone */
+ /* Universal */
+ case (('U'-'A')*1024)+(('T'-'A')*32):
+#ifndef STRICT_RFC822_TIMEZONES
+ case (('U'-'A')*1024)+(('T'-'A')*32)+'C'-'A':
+#endif
+ /* Greenwich */
+ case (('G'-'A')*1024)+(('M'-'A')*32)+'T'-'A':
+ case 'Z': elt->zhours = 0; break;
+
+ /* oriental (from Greenwich) timezones */
+#ifndef STRICT_RFC822_TIMEZONES
+ /* Middle Europe */
+ case (('M'-'A')*1024)+(('E'-'A')*32)+'T'-'A':
+#endif
+#ifdef BRITISH_SUMMER_TIME
+ /* British Summer */
+ case (('B'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+ case 'A': elt->zhours = 1; break;
+#ifndef STRICT_RFC822_TIMEZONES
+ /* Eastern Europe */
+ case (('E'-'A')*1024)+(('E'-'A')*32)+'T'-'A':
+#endif
+ case 'B': elt->zhours = 2; break;
+ case 'C': elt->zhours = 3; break;
+ case 'D': elt->zhours = 4; break;
+ case 'E': elt->zhours = 5; break;
+ case 'F': elt->zhours = 6; break;
+ case 'G': elt->zhours = 7; break;
+ case 'H': elt->zhours = 8; break;
+#ifndef STRICT_RFC822_TIMEZONES
+ /* Japan */
+ case (('J'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+ case 'I': elt->zhours = 9; break;
+ case 'K': elt->zhours = 10; break;
+ case 'L': elt->zhours = 11; break;
+ case 'M': elt->zhours = 12; break;
+\f
+ /* occidental (from Greenwich) timezones */
+ case 'N': elt->zoccident = 1; elt->zhours = 1; break;
+ case 'O': elt->zoccident = 1; elt->zhours = 2; break;
+#ifndef STRICT_RFC822_TIMEZONES
+ case (('A'-'A')*1024)+(('D'-'A')*32)+'T'-'A':
+#endif
+ case 'P': elt->zoccident = 1; elt->zhours = 3; break;
+#ifdef NEWFOUNDLAND_STANDARD_TIME
+ /* Newfoundland */
+ case (('N'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+ elt->zoccident = 1; elt->zhours = 3; elt->zminutes = 30; break;
+#endif
+#ifndef STRICT_RFC822_TIMEZONES
+ /* Atlantic */
+ case (('A'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+ /* CONUS */
+ case (('E'-'A')*1024)+(('D'-'A')*32)+'T'-'A':
+ case 'Q': elt->zoccident = 1; elt->zhours = 4; break;
+ /* Eastern */
+ case (('E'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+ case (('C'-'A')*1024)+(('D'-'A')*32)+'T'-'A':
+ case 'R': elt->zoccident = 1; elt->zhours = 5; break;
+ /* Central */
+ case (('C'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+ case (('M'-'A')*1024)+(('D'-'A')*32)+'T'-'A':
+ case 'S': elt->zoccident = 1; elt->zhours = 6; break;
+ /* Mountain */
+ case (('M'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+ case (('P'-'A')*1024)+(('D'-'A')*32)+'T'-'A':
+ case 'T': elt->zoccident = 1; elt->zhours = 7; break;
+ /* Pacific */
+ case (('P'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#ifndef STRICT_RFC822_TIMEZONES
+ case (('Y'-'A')*1024)+(('D'-'A')*32)+'T'-'A':
+#endif
+ case 'U': elt->zoccident = 1; elt->zhours = 8; break;
+#ifndef STRICT_RFC822_TIMEZONES
+ /* Yukon */
+ case (('Y'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+ case 'V': elt->zoccident = 1; elt->zhours = 9; break;
+#ifndef STRICT_RFC822_TIMEZONES
+ /* Hawaii */
+ case (('H'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+ case 'W': elt->zoccident = 1; elt->zhours = 10; break;
+ /* Nome/Bering/Samoa */
+#ifdef NOME_STANDARD_TIME
+ case (('N'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+#ifdef BERING_STANDARD_TIME
+ case (('B'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+#ifdef SAMOA_STANDARD_TIME
+ case (('S'-'A')*1024)+(('S'-'A')*32)+'T'-'A':
+#endif
+ case 'X': elt->zoccident = 1; elt->zhours = 11; break;
+ case 'Y': elt->zoccident = 1; elt->zhours = 12; break;
+\f
+ default: /* unknown time zones treated as local */
+ tn = time (0); /* time now... */
+ t = localtime (&tn); /* get local minutes since midnight */
+ mi = t->tm_hour * 60 + t->tm_min;
+ ms = t->tm_yday; /* note Julian day */
+ if (t = gmtime (&tn)) { /* minus UTC minutes since midnight */
+ mi -= t->tm_hour * 60 + t->tm_min;
+ /* ms can be one of:
+ * 36x local time is December 31, UTC is January 1, offset -24 hours
+ * 1 local time is 1 day ahead of UTC, offset +24 hours
+ * 0 local time is same day as UTC, no offset
+ * -1 local time is 1 day behind UTC, offset -24 hours
+ * -36x local time is January 1, UTC is December 31, offset +24 hours
+ */
+ if (ms -= t->tm_yday) /* correct offset if different Julian day */
+ mi += ((ms < 0) == (abs (ms) == 1)) ? -24*60 : 24*60;
+ if (mi < 0) { /* occidental? */
+ mi = abs (mi); /* yup, make positive number */
+ elt->zoccident = 1; /* and note west of UTC */
+ }
+ elt->zhours = mi / 60; /* now break into hours and minutes */
+ elt->zminutes = mi % 60;
+ }
+ break;
+ }
+ return T;
+}
+\f
+/* Mail n messages exist
+ * Accepts: mail stream
+ * number of messages
+ */
+
+void mail_exists (MAILSTREAM *stream,unsigned long nmsgs)
+{
+ char tmp[MAILTMPLEN];
+ if (nmsgs > MAXMESSAGES) {
+ sprintf (tmp,"Mailbox has more messages (%lu) exist than maximum (%lu)",
+ nmsgs,MAXMESSAGES);
+ mm_log (tmp,ERROR);
+ nmsgs = MAXMESSAGES; /* cap to maximum */
+ /* probably will crash in mail_elt() soon enough... */
+ }
+ /* make sure cache is large enough */
+ (*mailcache) (stream,nmsgs,CH_SIZE);
+ stream->nmsgs = nmsgs; /* update stream status */
+ /* notify main program of change */
+ if (!stream->silent) MM_EXISTS (stream,nmsgs);
+}
+
+
+/* Mail n messages are recent
+ * Accepts: mail stream
+ * number of recent messages
+ */
+
+void mail_recent (MAILSTREAM *stream,unsigned long recent)
+{
+ char tmp[MAILTMPLEN];
+ if (recent <= stream->nmsgs) stream->recent = recent;
+ else {
+ sprintf (tmp,"Non-existent recent message(s) %lu, nmsgs=%lu",
+ recent,stream->nmsgs);
+ mm_log (tmp,ERROR);
+ }
+}
+
+
+/* Mail message n is expunged
+ * Accepts: mail stream
+ * message #
+ */
+
+void mail_expunged (MAILSTREAM *stream,unsigned long msgno)
+{
+ char tmp[MAILTMPLEN];
+ MESSAGECACHE *elt;
+ if (msgno > stream->nmsgs) {
+ sprintf (tmp,"Expunge of non-existent message %lu, nmsgs=%lu",
+ msgno,stream->nmsgs);
+ mm_log (tmp,ERROR);
+ }
+ else {
+ elt = (MESSAGECACHE *) (*mailcache) (stream,msgno,CH_ELT);
+ /* notify main program of change */
+ if (!stream->silent) MM_EXPUNGED (stream,msgno);
+ if (elt) { /* if an element is there */
+ elt->msgno = 0; /* invalidate its message number and free */
+ (*mailcache) (stream,msgno,CH_FREE);
+ (*mailcache) (stream,msgno,CH_FREESORTCACHE);
+ }
+ /* expunge the slot */
+ (*mailcache) (stream,msgno,CH_EXPUNGE);
+ --stream->nmsgs; /* update stream status */
+ if (stream->msgno) { /* have stream pointers? */
+ /* make sure the short cache is nuked */
+ if (stream->scache) mail_gc (stream,GC_ENV | GC_TEXTS);
+ else stream->msgno = 0; /* make sure invalidated in any case */
+ }
+ }
+}
+\f
+/* Mail stream status routines */
+
+
+/* Mail lock stream
+ * Accepts: mail stream
+ */
+
+void mail_lock (MAILSTREAM *stream)
+{
+ if (stream->lock) {
+ char tmp[MAILTMPLEN];
+ sprintf (tmp,"Lock when already locked, mbx=%.80s",
+ stream->mailbox ? stream->mailbox : "???");
+ fatal (tmp);
+ }
+ else stream->lock = T; /* lock stream */
+}
+
+
+/* Mail unlock stream
+ * Accepts: mail stream
+ */
+
+void mail_unlock (MAILSTREAM *stream)
+{
+ if (!stream->lock) fatal ("Unlock when not locked");
+ else stream->lock = NIL; /* unlock stream */
+}
+
+
+/* Mail turn on debugging telemetry
+ * Accepts: mail stream
+ */
+
+void mail_debug (MAILSTREAM *stream)
+{
+ stream->debug = T; /* turn on debugging telemetry */
+ if (stream->dtb) (*stream->dtb->parameters) (ENABLE_DEBUG,stream);
+}
+
+
+/* Mail turn off debugging telemetry
+ * Accepts: mail stream
+ */
+
+void mail_nodebug (MAILSTREAM *stream)
+{
+ stream->debug = NIL; /* turn off debugging telemetry */
+ if (stream->dtb) (*stream->dtb->parameters) (DISABLE_DEBUG,stream);
+}
+
+
+/* Mail log to debugging telemetry
+ * Accepts: message
+ * flag that data is "sensitive"
+ */
+
+void mail_dlog (char *string,long flag)
+{
+ mm_dlog ((debugsensitive || !flag) ? string : "<suppressed>");
+}
+\f
+/* Mail parse UID sequence
+ * Accepts: mail stream
+ * sequence to parse
+ * Returns: T if parse successful, else NIL
+ */
+
+long mail_uid_sequence (MAILSTREAM *stream,unsigned char *sequence)
+{
+ unsigned long i,j,k,x,y;
+ for (i = 1; i <= stream->nmsgs; i++) mail_elt (stream,i)->sequence = NIL;
+ while (sequence && *sequence){/* while there is something to parse */
+ if (*sequence == '*') { /* maximum message */
+ i = stream->nmsgs ? mail_uid (stream,stream->nmsgs) : stream->uid_last;
+ sequence++; /* skip past * */
+ }
+ /* parse and validate message number */
+ /* parse and validate message number */
+ else if (!isdigit (*sequence)) {
+ MM_LOG ("Syntax error in sequence",ERROR);
+ return NIL;
+ }
+ else if (!(i = strtoul (sequence,(char **) &sequence,10))) {
+ MM_LOG ("UID may not be zero",ERROR);
+ return NIL;
+ }
+ switch (*sequence) { /* see what the delimiter is */
+ case ':': /* sequence range */
+ if (*++sequence == '*') { /* maximum message */
+ j = stream->nmsgs ? mail_uid (stream,stream->nmsgs) : stream->uid_last;
+ sequence++; /* skip past * */
+ }
+ /* parse end of range */
+ else if (!(j = strtoul (sequence,(char **) &sequence,10))) {
+ MM_LOG ("UID sequence range invalid",ERROR);
+ return NIL;
+ }
+ if (*sequence && *sequence++ != ',') {
+ MM_LOG ("UID sequence range syntax error",ERROR);
+ return NIL;
+ }
+ if (i > j) { /* swap the range if backwards */
+ x = i; i = j; j = x;
+ }
+ x = mail_msgno (stream,i);/* get msgnos */
+ y = mail_msgno (stream,j);/* for both UIDS (don't && it) */
+ /* easy if both UIDs valid */
+ if (x && y) while (x <= y) mail_elt (stream,x++)->sequence = T;
+ /* start UID valid, end is not */
+ else if (x) while ((x <= stream->nmsgs) && (mail_uid (stream,x) <= j))
+ mail_elt (stream,x++)->sequence = T;
+ /* end UID valid, start is not */
+ else if (y) for (x = 1; x <= y; x++) {
+ if (mail_uid (stream,x) >= i) mail_elt (stream,x)->sequence = T;
+ }
+ /* neither is valid, ugh */
+ else for (x = 1; x <= stream->nmsgs; x++)
+ if (((k = mail_uid (stream,x)) >= i) && (k <= j))
+ mail_elt (stream,x)->sequence = T;
+ break;
+ case ',': /* single message */
+ ++sequence; /* skip the delimiter, fall into end case */
+ case '\0': /* end of sequence, mark this message */
+ if (x = mail_msgno (stream,i)) mail_elt (stream,x)->sequence = T;
+ break;
+ default: /* anything else is a syntax error! */
+ MM_LOG ("UID sequence syntax error",ERROR);
+ return NIL;
+ }
+ }
+ return T; /* successfully parsed sequence */
+}
+\f
+/* Mail see if line list matches that in cache
+ * Accepts: candidate line list
+ * cached line list
+ * matching flags
+ * Returns: T if match, NIL if no match
+ */
+
+long mail_match_lines (STRINGLIST *lines,STRINGLIST *msglines,long flags)
+{
+ unsigned long i;
+ unsigned char *s,*t;
+ STRINGLIST *m;
+ if (!msglines) return T; /* full header is in cache */
+ /* need full header but filtered in cache */
+ if ((flags & FT_NOT) || !lines) return NIL;
+ do { /* make sure all present & accounted for */
+ for (m = msglines; m; m = m->next) if (lines->text.size == m->text.size) {
+ for (s = lines->text.data,t = m->text.data,i = lines->text.size;
+ i && !compare_uchar (*s,*t); s++,t++,i--);
+ if (!i) break; /* this line matches */
+ }
+ if (!m) return NIL; /* didn't find in the list */
+ }
+ while (lines = lines->next);
+ return T; /* all lines found */
+}
+\f
+/* Mail filter text by header lines
+ * Accepts: text to filter, with trailing null
+ * length of text
+ * list of lines
+ * fetch flags
+ * Returns: new text size, text overwritten
+ */
+
+unsigned long mail_filter (char *text,unsigned long len,STRINGLIST *lines,
+ long flags)
+{
+ STRINGLIST *hdrs;
+ int notfound;
+ unsigned long i;
+ char c,*s,*e,*t,tmp[MAILTMPLEN];
+ char *src = text;
+ char *dst = src;
+ char *end = text + len;
+ text[len] = '\012'; /* guard against running off buffer */
+ while (src < end) { /* process header */
+ /* slurp header line name */
+ for (s = src,e = s + MAILTMPLEN - 1,e = (e < end ? e : end),t = tmp;
+ (s < e) && ((c = (*s ? *s : (*s = ' '))) != ':') &&
+ ((c > ' ') ||
+ ((c != ' ') && (c != '\t') && (c != '\015') && (c != '\012')));
+ *t++ = *s++);
+ *t = '\0'; /* tie off */
+ notfound = T; /* not found yet */
+ if (i = t - tmp) /* see if found in header */
+ for (hdrs = lines; hdrs && notfound; hdrs = hdrs->next)
+ if ((hdrs->text.size == i) && !compare_csizedtext (tmp,&hdrs->text))
+ notfound = NIL;
+ /* skip header line if not wanted */
+ if (i && ((flags & FT_NOT) ? !notfound : notfound))
+ while (((*src++ != '\012') && (*src++ != '\012') && (*src++ != '\012') &&
+ (*src++ != '\012') && (*src++ != '\012') && (*src++ != '\012') &&
+ (*src++ != '\012') && (*src++ != '\012') && (*src++ != '\012') &&
+ (*src++ != '\012')) || ((*src == ' ') || (*src == '\t')));
+ else if (src == dst) { /* copy to self */
+ while (((*src++ != '\012') && (*src++ != '\012') && (*src++ != '\012') &&
+ (*src++ != '\012') && (*src++ != '\012') && (*src++ != '\012') &&
+ (*src++ != '\012') && (*src++ != '\012') && (*src++ != '\012') &&
+ (*src++ != '\012')) || ((*src == ' ') || (*src == '\t')));
+ dst = src; /* update destination */
+ }
+ else { /* copy line and any continuation line */
+ while ((((*dst++ = *src++) != '\012') && ((*dst++ = *src++) != '\012') &&
+ ((*dst++ = *src++) != '\012') && ((*dst++ = *src++) != '\012') &&
+ ((*dst++ = *src++) != '\012') && ((*dst++ = *src++) != '\012') &&
+ ((*dst++ = *src++) != '\012') && ((*dst++ = *src++) != '\012') &&
+ ((*dst++ = *src++) != '\012') && ((*dst++ = *src++) != '\012'))||
+ ((*src == ' ') || (*src == '\t')));
+ /* in case hit the guard LF */
+ if (src > end) dst -= (src - end);
+ }
+ }
+ *dst = '\0'; /* tie off destination */
+ return dst - text;
+}
+\f
+/* Local mail search message
+ * Accepts: MAIL stream
+ * message number
+ * optional section specification
+ * search program
+ * Returns: T if found, NIL otherwise
+ */
+
+long mail_search_msg (MAILSTREAM *stream,unsigned long msgno,char *section,
+ SEARCHPGM *pgm)
+{
+ unsigned short d;
+ char tmp[MAILTMPLEN];
+ MESSAGECACHE *elt = mail_elt (stream,msgno);
+ SEARCHHEADER *hdr;
+ SEARCHOR *or;
+ SEARCHPGMLIST *not;
+ unsigned long now = (unsigned long) time (0);
+ if (pgm->msgno || pgm->uid) { /* message set searches */
+ SEARCHSET *set;
+ /* message sequences */
+ if (pgm->msgno) { /* inside this message sequence set */
+ for (set = pgm->msgno; set; set = set->next)
+ if (set->last ? ((set->first <= set->last) ?
+ ((msgno >= set->first) && (msgno <= set->last)) :
+ ((msgno >= set->last) && (msgno <= set->first))) :
+ msgno == set->first) break;
+ if (!set) return NIL; /* not found within sequence */
+ }
+ if (pgm->uid) { /* inside this unique identifier set */
+ unsigned long uid = mail_uid (stream,msgno);
+ for (set = pgm->uid; set; set = set->next)
+ if (set->last ? ((set->first <= set->last) ?
+ ((uid >= set->first) && (uid <= set->last)) :
+ ((uid >= set->last) && (uid <= set->first))) :
+ uid == set->first) break;
+ if (!set) return NIL; /* not found within sequence */
+ }
+ }
+\f
+ /* Fast data searches */
+ /* need to fetch fast data? */
+ if ((!elt->rfc822_size && (pgm->larger || pgm->smaller)) ||
+ (!elt->year && (pgm->before || pgm->on || pgm->since ||
+ pgm->older || pgm->younger)) ||
+ (!elt->valid && (pgm->answered || pgm->unanswered ||
+ pgm->deleted || pgm->undeleted ||
+ pgm->draft || pgm->undraft ||
+ pgm->flagged || pgm->unflagged ||
+ pgm->recent || pgm->old ||
+ pgm->seen || pgm->unseen ||
+ pgm->keyword || pgm->unkeyword))) {
+ unsigned long i;
+ MESSAGECACHE *ielt;
+ for (i = elt->msgno; /* find last unloaded message in range */
+ (i < stream->nmsgs) && (ielt = mail_elt (stream,i+1)) &&
+ ((!ielt->rfc822_size && (pgm->larger || pgm->smaller)) ||
+ (!ielt->year && (pgm->before || pgm->on || pgm->since ||
+ pgm->older || pgm->younger)) ||
+ (!ielt->valid && (pgm->answered || pgm->unanswered ||
+ pgm->deleted || pgm->undeleted ||
+ pgm->draft || pgm->undraft ||
+ pgm->flagged || pgm->unflagged ||
+ pgm->recent || pgm->old ||
+ pgm->seen || pgm->unseen ||
+ pgm->keyword || pgm->unkeyword))); ++i);
+ if (i == elt->msgno) sprintf (tmp,"%lu",elt->msgno);
+ else sprintf (tmp,"%lu:%lu",elt->msgno,i);
+ mail_fetch_fast (stream,tmp,NIL);
+ }
+ /* size ranges */
+ if ((pgm->larger && (elt->rfc822_size <= pgm->larger)) ||
+ (pgm->smaller && (elt->rfc822_size >= pgm->smaller))) return NIL;
+ /* message flags */
+ if ((pgm->answered && !elt->answered) ||
+ (pgm->unanswered && elt->answered) ||
+ (pgm->deleted && !elt->deleted) ||
+ (pgm->undeleted && elt->deleted) ||
+ (pgm->draft && !elt->draft) ||
+ (pgm->undraft && elt->draft) ||
+ (pgm->flagged && !elt->flagged) ||
+ (pgm->unflagged && elt->flagged) ||
+ (pgm->recent && !elt->recent) ||
+ (pgm->old && elt->recent) ||
+ (pgm->seen && !elt->seen) ||
+ (pgm->unseen && elt->seen)) return NIL;
+ /* keywords */
+ if ((pgm->keyword && !mail_search_keyword (stream,elt,pgm->keyword,LONGT)) ||
+ (pgm->unkeyword && !mail_search_keyword (stream,elt,pgm->unkeyword,NIL)))
+ return NIL;
+ /* internal date ranges */
+ if (pgm->before || pgm->on || pgm->since) {
+ d = mail_shortdate (elt->year,elt->month,elt->day);
+ if (pgm->before && (d >= pgm->before)) return NIL;
+ if (pgm->on && (d != pgm->on)) return NIL;
+ if (pgm->since && (d < pgm->since)) return NIL;
+ }
+ if (pgm->older || pgm->younger) {
+ unsigned long msgd = mail_longdate (elt);
+ if (pgm->older && msgd > (now - pgm->older)) return NIL;
+ if (pgm->younger && msgd < (now - pgm->younger)) return NIL;
+ }
+\f
+ /* envelope searches */
+ if (pgm->sentbefore || pgm->senton || pgm->sentsince ||
+ pgm->bcc || pgm->cc || pgm->from || pgm->to || pgm->subject ||
+ pgm->return_path || pgm->sender || pgm->reply_to || pgm->in_reply_to ||
+ pgm->message_id || pgm->newsgroups || pgm->followup_to ||
+ pgm->references) {
+ ENVELOPE *env;
+ MESSAGECACHE delt;
+ if (section) { /* use body part envelope */
+ BODY *body = mail_body (stream,msgno,section);
+ env = (body && (body->type == TYPEMESSAGE) && body->subtype &&
+ !strcmp (body->subtype,"RFC822")) ? body->nested.msg->env : NIL;
+ }
+ else { /* use top level envelope if no section */
+ if (pgm->header && !stream->scache && !(stream->dtb->flags & DR_LOCAL))
+ mail_fetch_header(stream,msgno,NIL,NIL,NIL,FT_PEEK|FT_SEARCHLOOKAHEAD);
+ env = mail_fetchenvelope (stream,msgno);
+ }
+ if (!env) return NIL; /* no envelope obtained */
+ /* sent date ranges */
+ if ((pgm->sentbefore || pgm->senton || pgm->sentsince) &&
+ (!mail_parse_date (&delt,env->date) ||
+ !(d = mail_shortdate (delt.year,delt.month,delt.day)) ||
+ (pgm->sentbefore && (d >= pgm->sentbefore)) ||
+ (pgm->senton && (d != pgm->senton)) ||
+ (pgm->sentsince && (d < pgm->sentsince)))) return NIL;
+ /* search headers */
+ if ((pgm->bcc && !mail_search_addr (env->bcc,pgm->bcc)) ||
+ (pgm->cc && !mail_search_addr (env->cc,pgm->cc)) ||
+ (pgm->from && !mail_search_addr (env->from,pgm->from)) ||
+ (pgm->to && !mail_search_addr (env->to,pgm->to)) ||
+ (pgm->subject && !mail_search_header_text (env->subject,pgm->subject)))
+ return NIL;
+ /* These criteria are not supported by IMAP and have to be emulated */
+ if ((pgm->return_path &&
+ !mail_search_addr (env->return_path,pgm->return_path)) ||
+ (pgm->sender && !mail_search_addr (env->sender,pgm->sender)) ||
+ (pgm->reply_to && !mail_search_addr (env->reply_to,pgm->reply_to)) ||
+ (pgm->in_reply_to &&
+ !mail_search_header_text (env->in_reply_to,pgm->in_reply_to)) ||
+ (pgm->message_id &&
+ !mail_search_header_text (env->message_id,pgm->message_id)) ||
+ (pgm->newsgroups &&
+ !mail_search_header_text (env->newsgroups,pgm->newsgroups)) ||
+ (pgm->followup_to &&
+ !mail_search_header_text (env->followup_to,pgm->followup_to)) ||
+ (pgm->references &&
+ !mail_search_header_text (env->references,pgm->references)))
+ return NIL;
+ }
+\f
+ /* search header lines */
+ for (hdr = pgm->header; hdr; hdr = hdr->next) {
+ char *t,*e,*v;
+ SIZEDTEXT s;
+ STRINGLIST sth,stc;
+ sth.next = stc.next = NIL; /* only one at a time */
+ sth.text.data = hdr->line.data;
+ sth.text.size = hdr->line.size;
+ /* get the header text */
+ if ((t = mail_fetch_header (stream,msgno,NIL,&sth,&s.size,
+ FT_INTERNAL | FT_PEEK |
+ (section ? NIL : FT_SEARCHLOOKAHEAD))) &&
+ strchr (t,':')) {
+ if (hdr->text.size) { /* anything matches empty search string */
+ /* non-empty, copy field data */
+ s.data = (unsigned char *) fs_get (s.size + 1);
+ /* for each line */
+ for (v = (char *) s.data, e = t + s.size; t < e;) switch (*t) {
+ default: /* non-continuation, skip leading field name */
+ while ((t < e) && (*t++ != ':'));
+ if ((t < e) && (*t == ':')) t++;
+ case '\t': case ' ': /* copy field data */
+ while ((t < e) && (*t != '\015') && (*t != '\012')) *v++ = *t++;
+ *v++ = '\n'; /* tie off line */
+ while (((*t == '\015') || (*t == '\012')) && (t < e)) t++;
+ }
+ /* calculate true size */
+ s.size = v - (char *) s.data;
+ *v = '\0'; /* tie off results */
+ stc.text.data = hdr->text.data;
+ stc.text.size = hdr->text.size;
+ /* search header */
+ if (mail_search_header (&s,&stc)) fs_give ((void **) &s.data);
+ else { /* search failed */
+ fs_give ((void **) &s.data);
+ return NIL;
+ }
+ }
+ }
+ else return NIL; /* no matching header text */
+ }
+ /* search strings */
+ if ((pgm->text && !mail_search_text (stream,msgno,section,pgm->text,LONGT))||
+ (pgm->body && !mail_search_text (stream,msgno,section,pgm->body,NIL)))
+ return NIL;
+ /* logical conditions */
+ for (or = pgm->or; or; or = or->next)
+ if (!(mail_search_msg (stream,msgno,section,or->first) ||
+ mail_search_msg (stream,msgno,section,or->second))) return NIL;
+ for (not = pgm->not; not; not = not->next)
+ if (mail_search_msg (stream,msgno,section,not->pgm)) return NIL;
+ return T;
+}
+\f
+/* Mail search message header null-terminated text
+ * Accepts: header text
+ * strings to search
+ * Returns: T if search found a match
+ */
+
+long mail_search_header_text (char *s,STRINGLIST *st)
+{
+ SIZEDTEXT h;
+ /* have any text? */
+ if (h.data = (unsigned char *) s) {
+ h.size = strlen (s); /* yes, get its size */
+ return mail_search_header (&h,st);
+ }
+ return NIL;
+}
+
+
+/* Mail search message header
+ * Accepts: header as sized text
+ * strings to search
+ * Returns: T if search found a match
+ */
+
+long mail_search_header (SIZEDTEXT *hdr,STRINGLIST *st)
+{
+ SIZEDTEXT h;
+ long ret = LONGT;
+ /* make UTF-8 version of header */
+ utf8_mime2text (hdr,&h,U8T_CANONICAL);
+ while (h.size && ((h.data[h.size-1]=='\015') || (h.data[h.size-1]=='\012')))
+ --h.size; /* slice off trailing newlines */
+ do if (h.size ? /* search non-empty string */
+ !ssearch (h.data,h.size,st->text.data,st->text.size) : st->text.size)
+ ret = NIL;
+ while (ret && (st = st->next));
+ if (h.data != hdr->data) fs_give ((void **) &h.data);
+ return ret;
+}
+\f
+/* Mail search message body
+ * Accepts: MAIL stream
+ * message number
+ * optional section specification
+ * string list
+ * flags
+ * Returns: T if search found a match
+ */
+
+long mail_search_text (MAILSTREAM *stream,unsigned long msgno,char *section,
+ STRINGLIST *st,long flags)
+{
+ BODY *body;
+ long ret = NIL;
+ STRINGLIST *s = mail_newstringlist ();
+ mailgets_t omg = mailgets;
+ if (stream->dtb->flags & DR_LOWMEM) mailgets = mail_search_gets;
+ /* strings to search */
+ for (stream->private.search.string = s; st;) {
+ s->text.data = st->text.data;
+ s->text.size = st->text.size;
+ if (st = st->next) s = s->next = mail_newstringlist ();
+ }
+ stream->private.search.text = NIL;
+ if (flags) { /* want header? */
+ SIZEDTEXT s,t;
+ s.data = (unsigned char *)
+ mail_fetch_header (stream,msgno,section,NIL,&s.size,FT_INTERNAL|FT_PEEK);
+ utf8_mime2text (&s,&t,U8T_CANONICAL);
+ ret = mail_search_string_work (&t,&stream->private.search.string);
+ if (t.data != s.data) fs_give ((void **) &t.data);
+ }
+ if (!ret) { /* still looking for match? */
+ /* no section, get top-level body */
+ if (!section) mail_fetchstructure (stream,msgno,&body);
+ /* get body of nested message */
+ else if ((body = mail_body (stream,msgno,section)) &&
+ (body->type == TYPEMULTIPART) && body->subtype &&
+ !strcmp (body->subtype,"RFC822")) body = body->nested.msg->body;
+ if (body) ret = mail_search_body (stream,msgno,body,NIL,1,flags);
+ }
+ mailgets = omg; /* restore former gets routine */
+ /* clear searching */
+ for (s = stream->private.search.string; s; s = s->next) s->text.data = NIL;
+ mail_free_stringlist (&stream->private.search.string);
+ stream->private.search.text = NIL;
+ return ret;
+}
+\f
+/* Mail search message body text parts
+ * Accepts: MAIL stream
+ * message number
+ * current body pointer
+ * hierarchical level prefix
+ * position at current hierarchical level
+ * string list
+ * flags
+ * Returns: T if search found a match
+ */
+
+long mail_search_body (MAILSTREAM *stream,unsigned long msgno,BODY *body,
+ char *prefix,unsigned long section,long flags)
+{
+ long ret = NIL;
+ unsigned long i;
+ char *s,*t,sect[MAILTMPLEN];
+ SIZEDTEXT st,h;
+ PART *part;
+ PARAMETER *param;
+ if (prefix && (strlen (prefix) > (MAILTMPLEN - 20))) return NIL;
+ sprintf (sect,"%s%lu",prefix ? prefix : "",section++);
+ if (flags && prefix) { /* want to search MIME header too? */
+ st.data = (unsigned char *) mail_fetch_mime (stream,msgno,sect,&st.size,
+ FT_INTERNAL | FT_PEEK);
+ if (stream->dtb->flags & DR_LOWMEM) ret = stream->private.search.result;
+ else {
+ /* make UTF-8 version of header */
+ utf8_mime2text (&st,&h,U8T_CANONICAL);
+ ret = mail_search_string_work (&h,&stream->private.search.string);
+ if (h.data != st.data) fs_give ((void **) &h.data);
+ }
+ }
+ if (!ret) switch (body->type) {
+ case TYPEMULTIPART:
+ /* extend prefix if not first time */
+ s = prefix ? strcat (sect,".") : "";
+ for (i = 1,part = body->nested.part; part && !ret; i++,part = part->next)
+ ret = mail_search_body (stream,msgno,&part->body,s,i,flags);
+ break;
+ case TYPEMESSAGE:
+ if (!strcmp (body->subtype,"RFC822")) {
+ if (flags) { /* want to search nested message header? */
+ st.data = (unsigned char *)
+ mail_fetch_header (stream,msgno,sect,NIL,&st.size,
+ FT_INTERNAL | FT_PEEK);
+ if (stream->dtb->flags & DR_LOWMEM) ret =stream->private.search.result;
+ else {
+ /* make UTF-8 version of header */
+ utf8_mime2text (&st,&h,U8T_CANONICAL);
+ ret = mail_search_string_work (&h,&stream->private.search.string);
+ if (h.data != st.data) fs_give ((void **) &h.data);
+ }
+ }
+ if (body = body->nested.msg->body)
+ ret = (body->type == TYPEMULTIPART) ?
+ mail_search_body (stream,msgno,body,(prefix ? prefix : ""),
+ section - 1,flags) :
+ mail_search_body (stream,msgno,body,strcat (sect,"."),1,flags);
+ break;
+ }
+ /* non-MESSAGE/RFC822 falls into text case */
+\f
+ case TYPETEXT:
+ s = mail_fetch_body (stream,msgno,sect,&i,FT_INTERNAL | FT_PEEK);
+ if (stream->dtb->flags & DR_LOWMEM) ret = stream->private.search.result;
+ else {
+ for (t = NIL,param = body->parameter; param && !t; param = param->next)
+ if (!strcmp (param->attribute,"CHARSET")) t = param->value;
+ switch (body->encoding) { /* what encoding? */
+ case ENCBASE64:
+ if (st.data = (unsigned char *)
+ rfc822_base64 ((unsigned char *) s,i,&st.size)) {
+ ret = mail_search_string (&st,t,&stream->private.search.string);
+ fs_give ((void **) &st.data);
+ }
+ break;
+ case ENCQUOTEDPRINTABLE:
+ if (st.data = rfc822_qprint ((unsigned char *) s,i,&st.size)) {
+ ret = mail_search_string (&st,t,&stream->private.search.string);
+ fs_give ((void **) &st.data);
+ }
+ break;
+ default:
+ st.data = (unsigned char *) s;
+ st.size = i;
+ ret = mail_search_string (&st,t,&stream->private.search.string);
+ break;
+ }
+ }
+ break;
+ }
+ return ret;
+}
+\f
+/* Mail search text
+ * Accepts: sized text to search
+ * character set of sized text
+ * string list of search keys
+ * Returns: T if search found a match
+ */
+
+long mail_search_string (SIZEDTEXT *s,char *charset,STRINGLIST **st)
+{
+ SIZEDTEXT u;
+ long ret;
+ STRINGLIST **sc = st;
+ /* convert to UTF-8 as best we can */
+ if (!utf8_text (s,charset,&u,U8T_CANONICAL))
+ utf8_text (s,NIL,&u,U8T_CANONICAL);
+ ret = mail_search_string_work (&u,st);
+ if (u.data != s->data) fs_give ((void **) &u.data);
+ return ret;
+}
+
+
+/* Mail search text worker routine
+ * Accepts: sized text to search
+ * string list of search keys
+ * Returns: T if search found a match
+ */
+
+long mail_search_string_work (SIZEDTEXT *s,STRINGLIST **st)
+{
+ void *t;
+ STRINGLIST **sc = st;
+ while (*sc) { /* run down criteria list */
+ if (ssearch (s->data,s->size,(*sc)->text.data,(*sc)->text.size)) {
+ t = (void *) (*sc); /* found one, need to flush this */
+ *sc = (*sc)->next; /* remove it from the list */
+ fs_give (&t); /* flush the buffer */
+ }
+ else sc = &(*sc)->next; /* move to next in list */
+ }
+ return *st ? NIL : LONGT;
+}
+
+
+/* Mail search keyword
+ * Accepts: MAIL stream
+ * elt to get flags from
+ * keyword list
+ * T for keyword search, NIL for unkeyword search
+ * Returns: T if search found a match
+ */
+
+long mail_search_keyword (MAILSTREAM *stream,MESSAGECACHE *elt,STRINGLIST *st,
+ long flag)
+{
+ int i,j;
+ unsigned long f = 0;
+ unsigned long tf;
+ do {
+ for (i = 0; (j = (i < NUSERFLAGS) && stream->user_flags[i]); ++i)
+ if (!compare_csizedtext (stream->user_flags[i],&st->text)) {
+ f |= (1 << i);
+ break;
+ }
+ if (flag && !j) return NIL;
+ } while (st = st->next);
+ tf = elt->user_flags & f; /* get set flags which match */
+ return flag ? (f == tf) : !tf;
+}
+\f
+/* Mail search an address list
+ * Accepts: address list
+ * string list
+ * Returns: T if search found a match
+ */
+
+#define SEARCHBUFLEN (size_t) 2000
+#define SEARCHBUFSLOP (size_t) 5
+
+long mail_search_addr (ADDRESS *adr,STRINGLIST *st)
+{
+ ADDRESS *a,tadr;
+ SIZEDTEXT txt;
+ char tmp[SENDBUFLEN + 1];
+ size_t i = SEARCHBUFLEN;
+ size_t k;
+ long ret = NIL;
+ if (adr) {
+ txt.data = (unsigned char *) fs_get (i + SEARCHBUFSLOP);
+ /* never an error or next */
+ tadr.error = NIL,tadr.next = NIL;
+ /* write address list */
+ for (txt.size = 0,a = adr; a; a = a->next) {
+ k = (tadr.mailbox = a->mailbox) ? 4 + 2*strlen (a->mailbox) : 3;
+ if (tadr.personal = a->personal) k += 3 + 2*strlen (a->personal);
+ if (tadr.adl = a->adl) k += 3 + 2*strlen (a->adl);
+ if (tadr.host = a->host) k += 3 + 2*strlen (a->host);
+ if (tadr.personal || tadr.adl) k += 2;
+ if (k < (SENDBUFLEN-10)) {/* ignore ridiculous addresses */
+ tmp[0] = '\0';
+ rfc822_write_address (tmp,&tadr);
+ /* resize buffer if necessary */
+ if (((k = strlen (tmp)) + txt.size) > i)
+ fs_resize ((void **) &txt.data,SEARCHBUFSLOP + (i += SEARCHBUFLEN));
+ /* add new address */
+ memcpy (txt.data + txt.size,tmp,k);
+ txt.size += k;
+ /* another address follows */
+ if (a->next) txt.data[txt.size++] = ',';
+ }
+ }
+ txt.data[txt.size] = '\0'; /* tie off string */
+ ret = mail_search_header (&txt,st);
+ fs_give ((void **) &txt.data);
+ }
+ return ret;
+}
+\f
+/* Get string for low-memory searching
+ * Accepts: readin function pointer
+ * stream to use
+ * number of bytes
+ * gets data packet
+
+ * mail stream
+ * message number
+ * descriptor string
+ * option flags
+ * Returns: NIL, always
+ */
+
+#define SEARCHSLOP 128
+
+char *mail_search_gets (readfn_t f,void *stream,unsigned long size,
+ GETS_DATA *md)
+{
+ unsigned long i;
+ char tmp[MAILTMPLEN+SEARCHSLOP+1];
+ SIZEDTEXT st;
+ /* better not be called unless searching */
+ if (!md->stream->private.search.string) {
+ sprintf (tmp,"Search botch, mbx = %.80s, %s = %lu[%.80s]",
+ md->stream->mailbox,
+ (md->flags & FT_UID) ? "UID" : "msg",md->msgno,md->what);
+ fatal (tmp);
+ }
+ /* initially no match for search */
+ md->stream->private.search.result = NIL;
+ /* make sure buffer clear */
+ memset (st.data = (unsigned char *) tmp,'\0',
+ (size_t) MAILTMPLEN+SEARCHSLOP+1);
+ /* read first buffer */
+ (*f) (stream,st.size = i = min (size,(long) MAILTMPLEN),tmp);
+ /* search for text */
+ if (mail_search_string (&st,NIL,&md->stream->private.search.string))
+ md->stream->private.search.result = T;
+ else if (size -= i) { /* more to do, blat slop down */
+ memmove (tmp,tmp+MAILTMPLEN-SEARCHSLOP,(size_t) SEARCHSLOP);
+ do { /* read subsequent buffers one at a time */
+ (*f) (stream,i = min (size,(long) MAILTMPLEN),tmp+SEARCHSLOP);
+ st.size = i + SEARCHSLOP;
+ if (mail_search_string (&st,NIL,&md->stream->private.search.string))
+ md->stream->private.search.result = T;
+ else memmove (tmp,tmp+MAILTMPLEN,(size_t) SEARCHSLOP);
+ }
+ while ((size -= i) && !md->stream->private.search.result);
+ }
+ if (size) { /* toss out everything after that */
+ do (*f) (stream,i = min (size,(long) MAILTMPLEN),tmp);
+ while (size -= i);
+ }
+ return NIL;
+}
+\f
+/* Mail parse search criteria
+ * Accepts: criteria
+ * Returns: search program if parse successful, else NIL
+ */
+
+SEARCHPGM *mail_criteria (char *criteria)
+{
+ SEARCHPGM *pgm = NIL;
+ char *criterion,*r,tmp[MAILTMPLEN];
+ int f;
+ if (criteria) { /* only if criteria defined */
+ /* make writeable copy of criteria */
+ criteria = cpystr (criteria);
+ /* for each criterion */
+ for (pgm = mail_newsearchpgm (), criterion = strtok_r (criteria," ",&r);
+ criterion; (criterion = strtok_r (NIL," ",&r))) {
+ f = NIL; /* init then scan the criterion */
+ switch (*ucase (criterion)) {
+ case 'A': /* possible ALL, ANSWERED */
+ if (!strcmp (criterion+1,"LL")) f = T;
+ else if (!strcmp (criterion+1,"NSWERED")) f = pgm->answered = T;
+ break;
+ case 'B': /* possible BCC, BEFORE, BODY */
+ if (!strcmp (criterion+1,"CC"))
+ f = mail_criteria_string (&pgm->bcc,&r);
+ else if (!strcmp (criterion+1,"EFORE"))
+ f = mail_criteria_date (&pgm->before,&r);
+ else if (!strcmp (criterion+1,"ODY"))
+ f = mail_criteria_string (&pgm->body,&r);
+ break;
+ case 'C': /* possible CC */
+ if (!strcmp (criterion+1,"C")) f = mail_criteria_string (&pgm->cc,&r);
+ break;
+ case 'D': /* possible DELETED */
+ if (!strcmp (criterion+1,"ELETED")) f = pgm->deleted = T;
+ break;
+ case 'F': /* possible FLAGGED, FROM */
+ if (!strcmp (criterion+1,"LAGGED")) f = pgm->flagged = T;
+ else if (!strcmp (criterion+1,"ROM"))
+ f = mail_criteria_string (&pgm->from,&r);
+ break;
+ case 'K': /* possible KEYWORD */
+ if (!strcmp (criterion+1,"EYWORD"))
+ f = mail_criteria_string (&pgm->keyword,&r);
+ break;
+\f
+ case 'N': /* possible NEW */
+ if (!strcmp (criterion+1,"EW")) f = pgm->recent = pgm->unseen = T;
+ break;
+ case 'O': /* possible OLD, ON */
+ if (!strcmp (criterion+1,"LD")) f = pgm->old = T;
+ else if (!strcmp (criterion+1,"N"))
+ f = mail_criteria_date (&pgm->on,&r);
+ break;
+ case 'R': /* possible RECENT */
+ if (!strcmp (criterion+1,"ECENT")) f = pgm->recent = T;
+ break;
+ case 'S': /* possible SEEN, SINCE, SUBJECT */
+ if (!strcmp (criterion+1,"EEN")) f = pgm->seen = T;
+ else if (!strcmp (criterion+1,"INCE"))
+ f = mail_criteria_date (&pgm->since,&r);
+ else if (!strcmp (criterion+1,"UBJECT"))
+ f = mail_criteria_string (&pgm->subject,&r);
+ break;
+ case 'T': /* possible TEXT, TO */
+ if (!strcmp (criterion+1,"EXT"))
+ f = mail_criteria_string (&pgm->text,&r);
+ else if (!strcmp (criterion+1,"O"))
+ f = mail_criteria_string (&pgm->to,&r);
+ break;
+ case 'U': /* possible UN* */
+ if (criterion[1] == 'N') {
+ if (!strcmp (criterion+2,"ANSWERED")) f = pgm->unanswered = T;
+ else if (!strcmp (criterion+2,"DELETED")) f = pgm->undeleted = T;
+ else if (!strcmp (criterion+2,"FLAGGED")) f = pgm->unflagged = T;
+ else if (!strcmp (criterion+2,"KEYWORD"))
+ f = mail_criteria_string (&pgm->unkeyword,&r);
+ else if (!strcmp (criterion+2,"SEEN")) f = pgm->unseen = T;
+ }
+ break;
+ default: /* we will barf below */
+ break;
+ }
+ if (!f) { /* if can't identify criterion */
+ sprintf (tmp,"Unknown search criterion: %.30s",criterion);
+ MM_LOG (tmp,ERROR);
+ mail_free_searchpgm (&pgm);
+ break;
+ }
+ }
+ /* no longer need copy of criteria */
+ fs_give ((void **) &criteria);
+ }
+ return pgm;
+}
+\f
+/* Parse a date
+ * Accepts: pointer to date integer to return
+ * pointer to strtok state
+ * Returns: T if successful, else NIL
+ */
+
+int mail_criteria_date (unsigned short *date,char **r)
+{
+ STRINGLIST *s = NIL;
+ MESSAGECACHE elt;
+ /* parse the date and return fn if OK */
+ int ret = (mail_criteria_string (&s,r) &&
+ mail_parse_date (&elt,(char *) s->text.data) &&
+ (*date = mail_shortdate (elt.year,elt.month,elt.day))) ?
+ T : NIL;
+ if (s) mail_free_stringlist (&s);
+ return ret;
+}
+
+/* Calculate shortdate from elt values
+ * Accepts: year (0 = BASEYEAR)
+ * month (1 = January)
+ * day
+ * Returns: shortdate
+ */
+
+unsigned short mail_shortdate (unsigned int year,unsigned int month,
+ unsigned int day)
+{
+ return (year << 9) + (month << 5) + day;
+}
+\f
+/* Parse a string
+ * Accepts: pointer to stringlist
+ * pointer to strtok state
+ * Returns: T if successful, else NIL
+ */
+
+int mail_criteria_string (STRINGLIST **s,char **r)
+{
+ unsigned long n;
+ char e,*d,*end = " ",*c = strtok_r (NIL,"",r);
+ if (!c) return NIL; /* missing argument */
+ switch (*c) { /* see what the argument is */
+ case '{': /* literal string */
+ n = strtoul (c+1,&d,10); /* get its length */
+ if ((*d++ == '}') && (*d++ == '\015') && (*d++ == '\012') &&
+ (!(*(c = d + n)) || (*c == ' '))) {
+ e = *--c; /* store old delimiter */
+ *c = '\377'; /* make sure not a space */
+ strtok_r (c," ",r); /* reset the strtok mechanism */
+ *c = e; /* put character back */
+ break;
+ }
+ case '\0': /* catch bogons */
+ case ' ':
+ return NIL;
+ case '"': /* quoted string */
+ if (strchr (c+1,'"')) end = "\"";
+ else return NIL; /* falls through */
+ default: /* atomic string */
+ if (d = strtok_r (c,end,r)) n = strlen (d);
+ else return NIL;
+ break;
+ }
+ while (*s) s = &(*s)->next; /* find tail of list */
+ *s = mail_newstringlist (); /* make new entry */
+ /* return the data */
+ (*s)->text.data = (unsigned char *) cpystr (d);
+ (*s)->text.size = n;
+ return T;
+}
+\f
+/* Mail parse set from string
+ * Accepts: string to parse
+ * pointer to updated string pointer for return
+ * Returns: set with pointer updated, or NIL if error
+ */
+
+SEARCHSET *mail_parse_set (char *s,char **ret)
+{
+ SEARCHSET *cur;
+ SEARCHSET *set = NIL;
+ while (isdigit (*s)) {
+ if (!set) cur = set = mail_newsearchset ();
+ else cur = cur->next = mail_newsearchset ();
+ /* parse value */
+ if (!(cur->first = strtoul (s,&s,10)) ||
+ ((*s == ':') && !(isdigit (*++s) && (cur->last = strtoul (s,&s,10)))))
+ break; /* bad value or range */
+ if (*s == ',') ++s; /* point to next value if more */
+ else { /* end of set */
+ *ret = s; /* set return pointer */
+ return set; /* return set */
+ }
+ }
+ mail_free_searchset (&set); /* failure, punt partial set */
+ return NIL;
+}
+
+
+/* Mail append to set
+ * Accepts: head of search set or NIL to do nothing
+ * message to add
+ * Returns: tail of search set or NIL if did nothing
+ */
+
+SEARCHSET *mail_append_set (SEARCHSET *set,unsigned long msgno)
+{
+ if (set) { /* find tail */
+ while (set->next) set = set->next;
+ /* start of set if no first member */
+ if (!set->first) set->first = msgno;
+ else if (msgno == (set->last ? set->last : set->first) + 1)
+ set->last = msgno; /* extend range if 1 past current */
+ else (set = set->next = mail_newsearchset ())->first = msgno;
+ }
+ return set;
+}
+\f
+/* Mail sort messages
+ * Accepts: mail stream
+ * character set
+ * search program
+ * sort program
+ * option flags
+ * Returns: vector of sorted message sequences or NIL if error
+ */
+
+unsigned long *mail_sort (MAILSTREAM *stream,char *charset,SEARCHPGM *spg,
+ SORTPGM *pgm,long flags)
+{
+ unsigned long *ret = NIL;
+ if (stream->dtb) /* do the driver's action */
+ ret = (*(stream->dtb->sort ? stream->dtb->sort : mail_sort_msgs))
+ (stream,charset,spg,pgm,flags);
+ /* flush search/sort programs if requested */
+ if (spg && (flags & SE_FREE)) mail_free_searchpgm (&spg);
+ if (flags & SO_FREE) mail_free_sortpgm (&pgm);
+ return ret;
+}
+\f
+/* Mail sort messages work routine
+ * Accepts: mail stream
+ * character set
+ * search program
+ * sort program
+ * option flags
+ * Returns: vector of sorted message sequences or NIL if error
+ */
+
+unsigned long *mail_sort_msgs (MAILSTREAM *stream,char *charset,SEARCHPGM *spg,
+ SORTPGM *pgm,long flags)
+{
+ unsigned long i;
+ SORTCACHE **sc;
+ unsigned long *ret = NIL;
+ if (spg) { /* only if a search needs to be done */
+ int silent = stream->silent;
+ stream->silent = T; /* don't pass up mm_searched() events */
+ /* search for messages */
+ mail_search_full (stream,charset,spg,NIL);
+ stream->silent = silent; /* restore silence state */
+ }
+ /* initialize progress counters */
+ pgm->nmsgs = pgm->progress.cached = 0;
+ /* pass 1: count messages to sort */
+ for (i = 1; i <= stream->nmsgs; ++i)
+ if (mail_elt (stream,i)->searched) pgm->nmsgs++;
+ if (pgm->nmsgs) { /* pass 2: sort cache */
+ sc = mail_sort_loadcache (stream,pgm);
+ /* pass 3: sort messages */
+ if (!pgm->abort) ret = mail_sort_cache (stream,pgm,sc,flags);
+ fs_give ((void **) &sc); /* don't need sort vector any more */
+ }
+ /* empty sort results */
+ else ret = (unsigned long *) memset (fs_get (sizeof (unsigned long)),0,
+ sizeof (unsigned long));
+ /* also return via callback if requested */
+ if (mailsortresults) (*mailsortresults) (stream,ret,pgm->nmsgs);
+ return ret; /* return sort results */
+}
+\f
+/* Mail sort sortcache vector
+ * Accepts: mail stream
+ * sort program
+ * sortcache vector
+ * option flags
+ * Returns: vector of sorted message sequences or NIL if error
+ */
+
+unsigned long *mail_sort_cache (MAILSTREAM *stream,SORTPGM *pgm,SORTCACHE **sc,
+ long flags)
+{
+ unsigned long i,*ret;
+ /* pass 3: sort messages */
+ qsort ((void *) sc,pgm->nmsgs,sizeof (SORTCACHE *),mail_sort_compare);
+ /* optional post sorting */
+ if (pgm->postsort) (*pgm->postsort) ((void *) sc);
+ /* pass 4: return results */
+ ret = (unsigned long *) fs_get ((pgm->nmsgs+1) * sizeof (unsigned long));
+ if (flags & SE_UID) /* UID or msgno? */
+ for (i = 0; i < pgm->nmsgs; i++) ret[i] = mail_uid (stream,sc[i]->num);
+ else for (i = 0; i < pgm->nmsgs; i++) ret[i] = sc[i]->num;
+ ret[pgm->nmsgs] = 0; /* tie off message list */
+ return ret;
+}
+\f
+/* Mail load sortcache
+ * Accepts: mail stream, already searched
+ * sort program
+ * Returns: vector of sortcache pointers matching search
+ */
+
+static STRINGLIST maildateline = {{(unsigned char *) "date",4},NIL};
+static STRINGLIST mailrnfromline = {{(unsigned char *) ">from",5},NIL};
+static STRINGLIST mailfromline = {{(unsigned char *) "from",4},
+ &mailrnfromline};
+static STRINGLIST mailtonline = {{(unsigned char *) "to",2},NIL};
+static STRINGLIST mailccline = {{(unsigned char *) "cc",2},NIL};
+static STRINGLIST mailsubline = {{(unsigned char *) "subject",7},NIL};
+
+SORTCACHE **mail_sort_loadcache (MAILSTREAM *stream,SORTPGM *pgm)
+{
+ char *t,*v,*x,tmp[MAILTMPLEN];
+ SORTPGM *pg;
+ SORTCACHE *s,**sc;
+ MESSAGECACHE *elt,telt;
+ ENVELOPE *env;
+ ADDRESS *adr = NIL;
+ unsigned long i = (pgm->nmsgs) * sizeof (SORTCACHE *);
+ sc = (SORTCACHE **) memset (fs_get ((size_t) i),0,(size_t) i);
+ /* see what needs to be loaded */
+ for (i = 1; !pgm->abort && (i <= stream->nmsgs); i++)
+ if ((elt = mail_elt (stream,i))->searched) {
+ sc[pgm->progress.cached++] =
+ s = (SORTCACHE *) (*mailcache) (stream,i,CH_SORTCACHE);
+ s->pgm = pgm; /* note sort program */
+ s->num = i;
+ /* get envelope if cached */
+ if (stream->scache) env = (i == stream->msgno) ? stream->env : NIL;
+ else env = elt->private.msg.env;
+ for (pg = pgm; pg; pg = pg->next) switch (pg->function) {
+ case SORTARRIVAL: /* sort by arrival date */
+ if (!s->arrival) {
+ /* internal date unknown but can get? */
+ if (!elt->day && !(stream->dtb->flags & DR_NOINTDATE)) {
+ sprintf (tmp,"%lu",i);
+ mail_fetch_fast (stream,tmp,NIL);
+ }
+ /* wrong thing before 3-Jan-1970 */
+ s->arrival = elt->day ? mail_longdate (elt) : 1;
+ s->dirty = T;
+ }
+ break;
+ case SORTSIZE: /* sort by message size */
+ if (!s->size) {
+ if (!elt->rfc822_size) {
+ sprintf (tmp,"%lu",i);
+ mail_fetch_fast (stream,tmp,NIL);
+ }
+ s->size = elt->rfc822_size ? elt->rfc822_size : 1;
+ s->dirty = T;
+ }
+ break;
+\f
+ case SORTDATE: /* sort by date */
+ if (!s->date) {
+ if (env) t = env->date;
+ else if ((t = mail_fetch_header (stream,i,NIL,&maildateline,NIL,
+ FT_INTERNAL | FT_PEEK)) &&
+ (t = strchr (t,':')))
+ for (x = ++t; x = strpbrk (x,"\012\015"); x++)
+ switch (*(v = ((*x == '\015') && (x[1] == '\012')) ? x+2 : x+1)){
+ case ' ': /* erase continuation newlines */
+ case '\t':
+ memmove (x,v,strlen (v));
+ break;
+ default: /* tie off extraneous text */
+ *x = x[1] = '\0';
+ }
+ /* skip leading whitespace */
+ if (t) while ((*t == ' ') || (*t == '\t')) t++;
+ /* parse date from Date: header */
+ if (!(t && mail_parse_date (&telt,t) &&
+ (s->date = mail_longdate (&telt)))) {
+ /* failed, use internal date */
+ if (!(s->date = s->arrival)) {
+ /* internal date unknown but can get? */
+ if (!elt->day && !(stream->dtb->flags & DR_NOINTDATE)) {
+ sprintf (tmp,"%lu",i);
+ mail_fetch_fast (stream,tmp,NIL);
+ }
+ /* wrong thing before 3-Jan-1970 */
+ s->date = (s->arrival = elt->day ? mail_longdate (elt) : 1);
+ }
+ }
+ s->dirty = T;
+ }
+ break;
+\f
+ case SORTFROM: /* sort by first from */
+ if (!s->from) {
+ if (env) s->from = env->from && env->from->mailbox ?
+ cpystr (env->from->mailbox) : NIL;
+ else if ((t = mail_fetch_header (stream,i,NIL,&mailfromline,NIL,
+ FT_INTERNAL | FT_PEEK)) &&
+ (t = strchr (t,':'))) {
+ for (x = ++t; x = strpbrk (x,"\012\015"); x++)
+ switch (*(v = ((*x == '\015') && (x[1] == '\012')) ? x+2 : x+1)){
+ case ' ': /* erase continuation newlines */
+ case '\t':
+ memmove (x,v,strlen (v));
+ break;
+ case 'f': /* continuation but with extra "From:" */
+ case 'F':
+ if (v = strchr (v,':')) {
+ memmove (x,v+1,strlen (v+1));
+ break;
+ }
+ default: /* tie off extraneous text */
+ *x = x[1] = '\0';
+ }
+ if (adr = rfc822_parse_address (&adr,adr,&t,BADHOST,0)) {
+ s->from = adr->mailbox;
+ adr->mailbox = NIL;
+ mail_free_address (&adr);
+ }
+ }
+ if (!s->from) s->from = cpystr ("");
+ s->dirty = T;
+ }
+ break;
+\f
+ case SORTTO: /* sort by first to */
+ if (!s->to) {
+ if (env) s->to = env->to && env->to->mailbox ?
+ cpystr (env->to->mailbox) : NIL;
+ else if ((t = mail_fetch_header (stream,i,NIL,&mailtonline,NIL,
+ FT_INTERNAL | FT_PEEK)) &&
+ (t = strchr (t,':'))) {
+ for (x = ++t; x = strpbrk (x,"\012\015"); x++)
+ switch (*(v = ((*x == '\015') && (x[1] == '\012')) ? x+2 : x+1)){
+ case ' ': /* erase continuation newlines */
+ case '\t':
+ memmove (x,v,strlen (v));
+ break;
+ case 't': /* continuation but with extra "To:" */
+ case 'T':
+ if (v = strchr (v,':')) {
+ memmove (x,v+1,strlen (v+1));
+ break;
+ }
+ default: /* tie off extraneous text */
+ *x = x[1] = '\0';
+ }
+ if (adr = rfc822_parse_address (&adr,adr,&t,BADHOST,0)) {
+ s->to = adr->mailbox;
+ adr->mailbox = NIL;
+ mail_free_address (&adr);
+ }
+ }
+ if (!s->to) s->to = cpystr ("");
+ s->dirty = T;
+ }
+ break;
+\f
+ case SORTCC: /* sort by first cc */
+ if (!s->cc) {
+ if (env) s->cc = env->cc && env->cc->mailbox ?
+ cpystr (env->cc->mailbox) : NIL;
+ else if ((t = mail_fetch_header (stream,i,NIL,&mailccline,NIL,
+ FT_INTERNAL | FT_PEEK)) &&
+ (t = strchr (t,':'))) {
+ for (x = ++t; x = strpbrk (x,"\012\015"); x++)
+ switch (*(v = ((*x == '\015') && (x[1] == '\012')) ? x+2 : x+1)){
+ case ' ': /* erase continuation newlines */
+ case '\t':
+ memmove (x,v,strlen (v));
+ break;
+ case 't': /* continuation but with extra "To:" */
+ case 'T':
+ if (v = strchr (v,':')) {
+ memmove (x,v+1,strlen (v+1));
+ break;
+ }
+ default: /* tie off extraneous text */
+ *x = x[1] = '\0';
+ }
+ if (adr = rfc822_parse_address (&adr,adr,&t,BADHOST,0)) {
+ s->cc = adr->mailbox;
+ adr->mailbox = NIL;
+ mail_free_address (&adr);
+ }
+ }
+ if (!s->cc) s->cc = cpystr ("");
+ s->dirty = T;
+ }
+ break;
+\f
+ case SORTSUBJECT: /* sort by subject */
+ if (!s->subject) {
+ /* get subject from envelope if have one */
+ if (env) t = env->subject ? env->subject : "";
+ /* otherwise snarf from header text */
+ else if ((t = mail_fetch_header (stream,i,NIL,&mailsubline,
+ NIL,FT_INTERNAL | FT_PEEK)) &&
+ (t = strchr (t,':')))
+ for (x = ++t; x = strpbrk (x,"\012\015"); x++)
+ switch (*(v = ((*x == '\015') && (x[1] == '\012')) ? x+2 : x+1)){
+ case ' ': /* erase continuation newlines */
+ case '\t':
+ memmove (x,v,strlen (v));
+ break;
+ default: /* tie off extraneous text */
+ *x = x[1] = '\0';
+ }
+ else t = ""; /* empty subject */
+ /* strip and cache subject */
+ s->refwd = mail_strip_subject (t,&s->subject);
+ s->dirty = T;
+ }
+ break;
+ default:
+ fatal ("Unknown sort function");
+ }
+ }
+ return sc;
+}
+\f
+/* Strip subjects of extra spaces and leading and trailing cruft for sorting
+ * Accepts: unstripped subject
+ * pointer to return stripped subject, in cpystr form
+ * Returns: T if subject had a re/fwd, NIL otherwise
+ */
+
+unsigned int mail_strip_subject (char *t,char **ret)
+{
+ SIZEDTEXT src,dst;
+ unsigned long i,slen;
+ char c,*s,*x;
+ unsigned int refwd = NIL;
+ if (src.size = strlen (t)) { /* have non-empty subject? */
+ src.data = (unsigned char *) t;
+ /* Step 1 */
+ /* make copy, convert MIME2 if needed */
+ *ret = s = (utf8_mime2text (&src,&dst,U8T_CANONICAL) &&
+ (src.data != dst.data)) ? (char *) dst.data : cpystr (t);
+ /* convert spaces to tab, strip extra spaces */
+ for (x = t = s, c = 'x'; *t; t++) {
+ if (c != ' ') c = *x++ = ((*t == '\t') ? ' ' : *t);
+ else if ((*t != '\t') && (*t != ' ')) c = *x++ = *t;
+ }
+ *x = '\0'; /* tie off string */
+ /* Step 2 */
+ for (slen = dst.size; s; slen = strlen (s)) {
+ for (t = s + slen; t > s; ) switch (t[-1]) {
+ case ' ': case '\t': /* WSP */
+ *--t = '\0'; /* just remove it */
+ break;
+ case ')': /* possible "(fwd)" */
+ if ((t >= (s + 5)) && (t[-5] == '(') &&
+ ((t[-4] == 'F') || (t[-4] == 'f')) &&
+ ((t[-3] == 'W') || (t[-3] == 'w')) &&
+ ((t[-2] == 'D') || (t[-2] == 'd'))) {
+ *(t -= 5) = '\0'; /* remove "(fwd)" */
+ refwd = T; /* note a re/fwd */
+ break;
+ }
+ default: /* not a subj-trailer */
+ t = s;
+ break;
+ }
+ /* Steps 3-5 */
+ for (t = s; t; ) switch (*s) {
+ case ' ': case '\t': /* WSP */
+ s = t = mail_strip_subject_wsp (s + 1);
+ break;
+ case 'r': case 'R': /* possible "re" */
+ if (((s[1] == 'E') || (s[1] == 'e')) &&
+ (t = mail_strip_subject_wsp (s + 2)) &&
+ (t = mail_strip_subject_blob (t)) && (*t == ':')) {
+ s = ++t; /* found "re" */
+ refwd = T; /* definitely a re/fwd at this point */
+ }
+ else t = NIL; /* found subj-middle */
+ break;
+ case 'f': case 'F': /* possible "fw" or "fwd" */
+ if (((s[1] == 'w') || (s[1] == 'W')) &&
+ (((s[2] == 'd') || (s[2] == 'D')) ?
+ (t = mail_strip_subject_wsp (s + 3)) :
+ (t = mail_strip_subject_wsp (s + 2))) &&
+ (t = mail_strip_subject_blob (t)) && (*t == ':')) {
+ s = ++t; /* found "fwd" */
+ refwd = T; /* definitely a re/fwd at this point */
+ }
+ else t = NIL; /* found subj-middle */
+ break;
+ case '[': /* possible subj-blob */
+ if ((t = mail_strip_subject_blob (s)) && *t) s = t;
+ else t = NIL; /* found subj-middle */
+ break;
+ default:
+ t = NIL; /* found subj-middle */
+ break;
+ }
+ /* Step 6 */
+ /* Netscape-style "[Fwd: ...]"? */
+ if ((*s == '[') && ((s[1] == 'F') || (s[1] == 'f')) &&
+ ((s[2] == 'W') || (s[2] == 'w')) &&
+ ((s[3] == 'D') || (s[3] == 'd')) && (s[4] == ':') &&
+ (s[i = strlen (s) - 1] == ']')) {
+ s[i] = '\0'; /* flush closing "]" */
+ s += 5; /* and leading "[Fwd:" */
+ refwd = T; /* definitely a re/fwd at this point */
+ }
+ else break; /* don't need to loop back to step 2 */
+ }
+ if (s != (t = *ret)) { /* removed leading text? */
+ s = *ret = cpystr (s); /* yes, make a fresh return copy */
+ fs_give ((void **) &t); /* flush old copy */
+ }
+ }
+ else *ret = cpystr (""); /* empty subject */
+ return refwd; /* return re/fwd state */
+}
+\f
+/* Strip subject wsp helper routine
+ * Accepts: text
+ * Returns: pointer to text after blob
+ */
+
+char *mail_strip_subject_wsp (char *s)
+{
+ while ((*s == ' ') || (*s == '\t')) s++;
+ return s;
+}
+
+
+/* Strip subject blob helper routine
+ * Accepts: text
+ * Returns: pointer to text after any blob, NIL if blob-like but not blob
+ */
+
+char *mail_strip_subject_blob (char *s)
+{
+ if (*s != '[') return s; /* not a blob, ignore */
+ /* search for end of blob */
+ while (*++s != ']') if ((*s == '[') || !*s) return NIL;
+ return mail_strip_subject_wsp (s + 1);
+}
+\f
+/* Sort compare messages
+ * Accept: first message sort cache element
+ * second message sort cache element
+ * Returns: -1 if a1 < a2, 0 if a1 == a2, 1 if a1 > a2
+ */
+
+int mail_sort_compare (const void *a1,const void *a2)
+{
+ int i = 0;
+ SORTCACHE *s1 = *(SORTCACHE **) a1;
+ SORTCACHE *s2 = *(SORTCACHE **) a2;
+ SORTPGM *pgm = s1->pgm;
+ if (!s1->sorted) { /* this one sorted yet? */
+ s1->sorted = T;
+ pgm->progress.sorted++; /* another sorted message */
+ }
+ if (!s2->sorted) { /* this one sorted yet? */
+ s2->sorted = T;
+ pgm->progress.sorted++; /* another sorted message */
+ }
+ do {
+ switch (pgm->function) { /* execute search program */
+ case SORTDATE: /* sort by date */
+ i = compare_ulong (s1->date,s2->date);
+ break;
+ case SORTARRIVAL: /* sort by arrival date */
+ i = compare_ulong (s1->arrival,s2->arrival);
+ break;
+ case SORTSIZE: /* sort by message size */
+ i = compare_ulong (s1->size,s2->size);
+ break;
+ case SORTFROM: /* sort by first from */
+ i = compare_cstring (s1->from,s2->from);
+ break;
+ case SORTTO: /* sort by first to */
+ i = compare_cstring (s1->to,s2->to);
+ break;
+ case SORTCC: /* sort by first cc */
+ i = compare_cstring (s1->cc,s2->cc);
+ break;
+ case SORTSUBJECT: /* sort by subject */
+ i = compare_cstring (s1->subject,s2->subject);
+ break;
+ }
+ if (pgm->reverse) i = -i; /* flip results if necessary */
+ }
+ while (pgm = i ? NIL : pgm->next);
+ /* return result, avoid 0 if at all possible */
+ return i ? i : compare_ulong (s1->num,s2->num);
+}
+\f
+/* Return message date as an unsigned long seconds since time began
+ * Accepts: message cache pointer
+ * Returns: unsigned long of date
+ *
+ * This routine, like most UNIX systems, is clueless about leap seconds.
+ * Thus, it treats 23:59:60 as equivalent to 00:00:00 the next day.
+ *
+ * This routine forces any early hours on 1-Jan-1970 in oriental timezones
+ * to be 1-Jan-1970 00:00:00 UTC, so as to avoid negative longdates.
+ */
+
+unsigned long mail_longdate (MESSAGECACHE *elt)
+{
+ unsigned long m = elt->month ? elt->month : 1;
+ unsigned long yr = elt->year + BASEYEAR;
+ /* number of days since time began */
+ unsigned long ret = (elt->day ? (elt->day - 1) : 0)
+ + 30 * (m - 1) + ((m + (m > 8)) / 2)
+#ifndef USEJULIANCALENDAR
+#ifndef USEORTHODOXCALENDAR /* Gregorian calendar */
+ + ((yr / 400) - (BASEYEAR / 400)) - ((yr / 100) - (BASEYEAR / 100))
+#ifdef Y4KBUGFIX
+ - ((yr / 4000) - (BASEYEAR / 4000))
+#endif
+ - ((m < 3) ?
+ !(yr % 4) && ((yr % 100) || (!(yr % 400)
+#ifdef Y4KBUGFIX
+ && (yr % 4000)
+#endif
+ )) : 2)
+#else /* Orthodox calendar */
+ + ((2*(yr / 900)) - (2*(BASEYEAR / 900)))
+ + (((yr % 900) >= 200) - ((BASEYEAR % 900) >= 200))
+ + (((yr % 900) >= 600) - ((BASEYEAR % 900) >= 600))
+ - ((yr / 100) - (BASEYEAR / 100))
+ - ((m < 3) ?
+ !(yr % 4) && ((yr % 100) || ((yr % 900) == 200) || ((yr % 900) == 600))
+ : 2)
+#endif
+#endif
+ + elt->year * 365 + (((unsigned long) (elt->year + (BASEYEAR % 4))) / 4);
+ ret *= 24; ret += elt->hours; /* date value in hours */
+ ret *= 60; ret +=elt->minutes;/* date value in minutes */
+ yr = (elt->zhours * 60) + elt->zminutes;
+ if (elt->zoccident) ret += yr;/* occidental timezone, make UTC */
+ else if (ret < yr) return 0; /* still 31-Dec-1969 in UTC */
+ else ret -= yr; /* oriental timezone, make UTC */
+ ret *= 60; ret += elt->seconds;
+ return ret;
+}
+\f
+/* Mail thread messages
+ * Accepts: mail stream
+ * thread type
+ * character set
+ * search program
+ * option flags
+ * Returns: thread node tree or NIL if error
+ */
+
+THREADNODE *mail_thread (MAILSTREAM *stream,char *type,char *charset,
+ SEARCHPGM *spg,long flags)
+{
+ THREADNODE *ret = NIL;
+ if (stream->dtb) /* must have a live driver */
+ ret = stream->dtb->thread ? /* do driver's action if available */
+ (*stream->dtb->thread) (stream,type,charset,spg,flags) :
+ mail_thread_msgs (stream,type,charset,spg,flags,mail_sort_msgs);
+ /* flush search/sort programs if requested */
+ if (spg && (flags & SE_FREE)) mail_free_searchpgm (&spg);
+ return ret;
+}
+
+
+/* Mail thread messages
+ * Accepts: mail stream
+ * thread type
+ * character set
+ * search program
+ * option flags
+ * sorter routine
+ * Returns: thread node tree or NIL if error
+ */
+
+THREADNODE *mail_thread_msgs (MAILSTREAM *stream,char *type,char *charset,
+ SEARCHPGM *spg,long flags,sorter_t sorter)
+{
+ THREADER *t;
+ for (t = &mailthreadlist; t; t = t->next)
+ if (!compare_cstring (type,t->name)) {
+ THREADNODE *ret = (*t->dispatch) (stream,charset,spg,flags,sorter);
+ if (mailthreadresults) (*mailthreadresults) (stream,ret);
+ return ret;
+ }
+ MM_LOG ("No such thread type",ERROR);
+ return NIL;
+}
+\f
+/* Mail thread ordered subject
+ * Accepts: mail stream
+ * character set
+ * search program
+ * option flags
+ * sorter routine
+ * Returns: thread node tree
+ */
+
+THREADNODE *mail_thread_orderedsubject (MAILSTREAM *stream,char *charset,
+ SEARCHPGM *spg,long flags,
+ sorter_t sorter)
+{
+ THREADNODE *thr = NIL;
+ THREADNODE *cur,*top,**tc;
+ SORTPGM pgm,pgm2;
+ SORTCACHE *s;
+ unsigned long i,j,*lst,*ls;
+ /* sort by subject+date */
+ memset (&pgm,0,sizeof (SORTPGM));
+ memset (&pgm2,0,sizeof (SORTPGM));
+ pgm.function = SORTSUBJECT;
+ pgm.next = &pgm2;
+ pgm2.function = SORTDATE;
+ if (lst = (*sorter) (stream,charset,spg,&pgm,flags & ~(SE_FREE | SE_UID))){
+ if (*(ls = lst)) { /* create thread */
+ /* note first subject */
+ cur = top = thr = mail_newthreadnode
+ ((SORTCACHE *) (*mailcache) (stream,*ls++,CH_SORTCACHE));
+ /* note its number */
+ cur->num = (flags & SE_UID) ? mail_uid (stream,*lst) : *lst;
+ i = 1; /* number of threads */
+ while (*ls) { /* build tree */
+ /* subjects match? */
+ s = (SORTCACHE *) (*mailcache) (stream,*ls++,CH_SORTCACHE);
+ if (compare_cstring (top->sc->subject,s->subject)) {
+ i++; /* have a new thread */
+ top = top->branch = cur = mail_newthreadnode (s);
+ }
+ /* start a child of the top */
+ else if (cur == top) cur = cur->next = mail_newthreadnode (s);
+ /* sibling of child */
+ else cur = cur->branch = mail_newthreadnode (s);
+ /* set to msgno or UID as needed */
+ cur->num = (flags & SE_UID) ? mail_uid (stream,s->num) : s->num;
+ }
+ /* make threadnode cache */
+ tc = (THREADNODE **) fs_get (i * sizeof (THREADNODE *));
+ /* load threadnode cache */
+ for (j = 0, cur = thr; cur; cur = cur->branch) tc[j++] = cur;
+ if (i != j) fatal ("Threadnode cache confusion");
+ qsort ((void *) tc,i,sizeof (THREADNODE *),mail_thread_compare_date);
+ for (j = 0, --i; j < i; j++) tc[j]->branch = tc[j+1];
+ tc[j]->branch = NIL; /* end of root */
+ thr = tc[0]; /* head of data */
+ fs_give ((void **) &tc);
+ }
+ fs_give ((void **) &lst);
+ }
+ return thr;
+}
+\f
+/* Mail thread references
+ * Accepts: mail stream
+ * character set
+ * search program
+ * option flags
+ * sorter routine
+ * Returns: thread node tree
+ */
+
+#define REFHASHSIZE 1009 /* arbitrary prime for hash table size */
+
+/* Reference threading container, as described in Jamie Zawinski's web page
+ * (http://www.jwz.org/doc/threading.html) for this algorithm. These are
+ * stored as extended data in the hash table (called "id_table" in JWZ's
+ * document) and are maintained by the hash table routines. The hash table
+ * routines implement extended data as additional void* words at the end of
+ * each bucket, hence these strange macros instead of a struct which would
+ * have been more straightforward.
+ */
+
+#define THREADLINKS 3 /* number of thread links */
+
+#define CACHE(data) ((SORTCACHE *) (data)[0])
+#define PARENT(data) ((container_t) (data)[1])
+#define SETPARENT(data,value) ((container_t) (data[1] = value))
+#define SIBLING(data) ((container_t) (data)[2])
+#define SETSIBLING(data,value) ((container_t) (data[2] = value))
+#define CHILD(data) ((container_t) (data)[3])
+#define SETCHILD(data,value) ((container_t) (data[3] = value))
+
+THREADNODE *mail_thread_references (MAILSTREAM *stream,char *charset,
+ SEARCHPGM *spg,long flags,sorter_t sorter)
+{
+ MESSAGECACHE *elt,telt;
+ ENVELOPE *env;
+ SORTCACHE *s;
+ STRINGLIST *st;
+ HASHENT *he;
+ THREADNODE **tc,*cur,*lst,*nxt,*sis,*msg;
+ container_t con,nxc,prc,sib;
+ void **sub;
+ char *t,tmp[MAILTMPLEN];
+ unsigned long j,nmsgs;
+ unsigned long i = stream->nmsgs * sizeof (SORTCACHE *);
+ SORTCACHE **sc = (SORTCACHE **) memset (fs_get ((size_t) i),0,(size_t) i);
+ HASHTAB *ht = hash_create (REFHASHSIZE);
+ THREADNODE *root = NIL;
+ if (spg) { /* only if a search needs to be done */
+ int silent = stream->silent;
+ stream->silent = T; /* don't pass up mm_searched() events */
+ /* search for messages */
+ mail_search_full (stream,charset,spg,NIL);
+ stream->silent = silent; /* restore silence state */
+ }
+\f
+ /* create SORTCACHE vector of requested msgs */
+ for (i = 1, nmsgs = 0; i <= stream->nmsgs; ++i)
+ if (mail_elt (stream,i)->searched)
+ (sc[nmsgs++] = (SORTCACHE *)(*mailcache)(stream,i,CH_SORTCACHE))->num =i;
+ /* separate pass so can do overview fetch lookahead */
+ for (i = 0; i < nmsgs; ++i) { /* for each requested message */
+ /* is anything missing in its SORTCACHE? */
+ if (!((s = sc[i])->date && s->subject && s->message_id && s->references)) {
+ /* driver has an overview mechanism? */
+ if (stream->dtb && stream->dtb->overview) {
+ /* yes, find following unloaded entries */
+ for (j = i + 1; (j < nmsgs) && !sc[j]->references; ++j);
+ sprintf (tmp,"%lu",mail_uid (stream,s->num));
+ if (i != --j) /* end of range different? */
+ sprintf (tmp + strlen (tmp),":%lu",mail_uid (stream,sc[j]->num));
+ /* load via overview mechanism */
+ mail_fetch_overview (stream,tmp,mail_thread_loadcache);
+ }
+ /* still missing data? */
+ if (!s->date || !s->subject || !s->message_id || !s->references) {
+ /* try to load data from envelope */
+ if (env = mail_fetch_structure (stream,s->num,NIL,NIL)) {
+ if (!s->date && env->date && mail_parse_date (&telt,env->date))
+ s->date = mail_longdate (&telt);
+ if (!s->subject && env->subject)
+ s->refwd =
+ mail_strip_subject (env->subject,&s->subject);
+ if (!s->message_id && env->message_id && *env->message_id)
+ s->message_id = mail_thread_parse_msgid (env->message_id,NIL);
+ if (!s->references && /* use References: or In-Reply-To: */
+ !(s->references =
+ mail_thread_parse_references (env->references,T)))
+ s->references = mail_thread_parse_references(env->in_reply_to,NIL);
+ }
+ /* last resort */
+ if (!s->date && !(s->date = s->arrival)) {
+ /* internal date unknown but can get? */
+ if (!(elt = mail_elt (stream,s->num))->day &&
+ !(stream->dtb->flags & DR_NOINTDATE)) {
+ sprintf (tmp,"%lu",s->num);
+ mail_fetch_fast (stream,tmp,NIL);
+ }
+ /* wrong thing before 3-Jan-1970 */
+ s->date = (s->arrival = elt->day ? mail_longdate (elt) : 1);
+ }
+ if (!s->subject) s->subject = cpystr ("");
+ if (!s->references) s->references = mail_newstringlist ();
+ s->dirty = T;
+ }
+ }
+\f
+ /* Step 1 (preliminary) */
+ /* generate unique string */
+ sprintf (tmp,"%s.%lx.%lx@%s",stream->mailbox,stream->uid_validity,
+ mail_uid (stream,s->num),mylocalhost ());
+ /* flush old unique string if not message-id */
+ if (s->unique && (s->unique != s->message_id))
+ fs_give ((void **) &s->unique);
+ s->unique = s->message_id ? /* don't permit Message ID duplicates */
+ (hash_lookup (ht,s->message_id) ? cpystr (tmp) : s->message_id) :
+ (s->message_id = cpystr (tmp));
+ /* add unique string to hash table */
+ hash_add (ht,s->unique,s,THREADLINKS);
+ }
+ /* Step 1 */
+ for (i = 0; i < nmsgs; ++i) { /* for each message in sortcache */
+ /* Step 1A */
+ if ((st = (s = sc[i])->references) && st->text.data)
+ for (con = hash_lookup_and_add (ht,(char *) st->text.data,NIL,
+ THREADLINKS); st = st->next; con = nxc) {
+ nxc = hash_lookup_and_add (ht,(char *) st->text.data,NIL,THREADLINKS);
+ /* only if no parent & won't introduce loop */
+ if (!PARENT (nxc) && !mail_thread_check_child (con,nxc)) {
+ SETPARENT (nxc,con); /* establish parent/child link */
+ /* other children become sibling of this one */
+ SETSIBLING (nxc,CHILD (con));
+ SETCHILD (con,nxc); /* set as child of parent */
+ }
+ }
+ else con = NIL; /* else message has no ancestors */
+ /* Step 1B */
+ if ((prc = PARENT ((nxc = hash_lookup (ht,s->unique)))) &&
+ (prc != con)) { /* break links if have a different parent */
+ SETPARENT (nxc,NIL); /* easy if direct child */
+ if (nxc == CHILD (prc)) SETCHILD (prc,SIBLING (nxc));
+ else { /* otherwise hunt through sisters */
+ for (sib = CHILD (prc); nxc != SIBLING (sib); sib = SIBLING (sib));
+ SETSIBLING (sib,SIBLING (nxc));
+ }
+ SETSIBLING (nxc,NIL); /* no more little sisters either */
+ prc = NIL; /* no more parent set */
+ }
+ /* need to set parent, and parent is good? */
+ if (!prc && !mail_thread_check_child (con,nxc)) {
+ SETPARENT (nxc,con); /* establish parent/child link */
+ if (con) { /* if non-root parent, set parent's child */
+ if (CHILD (con)) { /* have a child already */
+ /* find youngest daughter */
+ for (con = CHILD (con); SIBLING (con); con = SIBLING (con));
+ SETSIBLING (con,nxc); /* add new baby sister */
+ }
+ else SETCHILD (con,nxc);/* set as only child */
+ }
+ }
+ }
+ fs_give ((void **) &sc); /* finished with sortcache vector */
+\f
+ /* Step 2 */
+ /* search hash table for parentless messages */
+ for (i = 0, prc = con = NIL; i < ht->size; i++)
+ for (he = ht->table[i]; he; he = he->next)
+ if (!PARENT ((nxc = he->data))) {
+ /* sibling of previous parentless message */
+ if (con) con = SETSIBLING (con,nxc);
+ else prc = con = nxc; /* first parentless message */
+ }
+ /* Once the dummy containers are pruned, we no longer need the parent
+ * information, so we can convert the containers to THREADNODEs. Since
+ * we don't need the id_table any more either, we can reset the hash table
+ * and reuse it as a subject_table. Resetting the hash table will also
+ * destroy the containers.
+ */
+ /* Step 3 */
+ /* prune dummies, convert to threadnode */
+ root = mail_thread_c2node (stream,mail_thread_prune_dummy (prc,NIL),flags);
+ /* Step 4 */
+ /* make buffer for sorting */
+ tc = (THREADNODE **) fs_get (nmsgs * sizeof (THREADNODE *));
+ /* load threadcache and count nodes to sort */
+ for (i = 0, cur = root; cur ; cur = cur->branch) tc[i++] = cur;
+ if (i > 1) { /* only if need to sort */
+ qsort ((void *) tc,i,sizeof (THREADNODE *),mail_thread_compare_date);
+ /* relink siblings */
+ for (j = 0, --i; j < i; j++) tc[j]->branch = tc[j+1];
+ tc[j]->branch = NIL; /* end of root */
+ root = tc[0]; /* establish new root */
+ }
+ /* Step 5A */
+ hash_reset (ht); /* discard containers, reset ht */
+ /* Step 5B */
+ for (cur = root; cur; cur = cur->branch)
+ if ((t = (nxt = (cur->sc ? cur : cur->next))->sc->subject) && *t) {
+ /* add new subject to hash table */
+ if (!(sub = hash_lookup (ht,t))) hash_add (ht,t,cur,0);
+ /* if one in table not dummy and */
+ else if ((s = (lst = (THREADNODE *) sub[0])->sc) &&
+ /* current dummy, or not re/fwd and table is */
+ (!cur->sc || (!nxt->sc->refwd && s->refwd)))
+ sub[0] = (void *) cur; /* replace with this message */
+ }
+\f
+ /* Step 5C */
+ for (cur = root, sis = NIL; cur; cur = msg) {
+ /* do nothing if current message or no sub */
+ if (!(t = (cur->sc ? cur : cur->next)->sc->subject) || !*t ||
+ ((lst = (THREADNODE *) (sub = hash_lookup (ht,t))[0]) == cur))
+ msg = (sis = cur)->branch;
+ else if (!lst->sc) { /* is message in the table a dummy? */
+ /* find youngest daughter of msg in table */
+ for (msg = lst->next; msg->branch; msg = msg->branch);
+ if (!cur->sc) { /* current message a dummy? */
+ msg->branch = cur->next;/* current's daughter now dummy's youngest */
+ msg = cur->branch; /* continue scan at younger sister */
+ /* now delete this node */
+ cur->branch = cur->next = NIL;
+ mail_free_threadnode (&cur);
+ }
+ else { /* current message not a dummy */
+ msg->branch = cur; /* append as youngest daughter */
+ msg = cur->branch; /* continue scan at younger sister */
+ cur->branch = NIL; /* lose our younger sisters */
+ }
+ }
+ else { /* no dummies, is current re/fwd, table not? */
+ if (cur->sc->refwd && !lst->sc->refwd) {
+ if (lst->next) { /* find youngest daughter of msg in table */
+ for (msg = lst->next; msg->branch; msg = msg->branch);
+ msg->branch = cur; /* append as youngest daughter */
+ }
+ else lst->next = cur; /* no children, so make the eldest daughter */
+ }
+\f
+ else { /* no re/fwd, create a new dummy */
+ msg = mail_newthreadnode (NIL);
+ if (lst == root) { /* msg in table is root? */
+ root = lst->branch; /* younger sister becomes new root */
+ /* no longer older sister either */
+ if (lst == sis) sis = NIL;
+ }
+ else { /* find older sister of msg in table */
+ for (nxt = root; lst != nxt->branch; nxt = nxt->branch);
+ /* remove from older sister */
+ nxt->branch = lst->branch;
+ }
+ msg->next = lst; /* msg in table becomes child */
+ lst->branch = cur; /* current now little sister of msg in table */
+ if (sis) { /* have an elder sister? */
+ if (sis == lst) /* rescan if lost her */
+ for (sis = root; cur != sis->branch; sis = sis->branch);
+ sis->branch = msg; /* make dummy younger sister of big sister */
+ }
+ else root = msg; /* otherwise this is the new root */
+ sub[0] = sis = msg; /* set new msg in table and new big sister */
+ }
+ msg = cur->branch; /* continue scan at younger sister */
+ cur->branch = NIL; /* lose our younger sisters */
+ }
+ if (sis) sis->branch = msg; /* older sister gets this as younger sister */
+ else root = msg; /* otherwise this is the new root */
+ }
+ hash_destroy (&ht); /* finished with hash table */
+ /* Step 6 */
+ /* sort threads */
+ root = mail_thread_sort (root,tc);
+ fs_give ((void **) &tc); /* finished with sort buffer */
+ return root; /* return sorted list */
+}
+\f
+/* Fetch overview callback to load sortcache for threading
+ * Accepts: MAIL stream
+ * UID of this message
+ * overview of this message
+ * msgno of this message
+ */
+
+void mail_thread_loadcache (MAILSTREAM *stream,unsigned long uid,OVERVIEW *ov,
+ unsigned long msgno)
+{
+ if (msgno && ov) { /* just in case */
+ MESSAGECACHE telt;
+ SORTCACHE *s = (SORTCACHE *) (*mailcache) (stream,msgno,CH_SORTCACHE);
+ if (!s->subject && ov->subject) {
+ s->refwd = mail_strip_subject (ov->subject,&s->subject);
+ s->dirty = T;
+ }
+ if (!s->from && ov->from && ov->from->mailbox) {
+ s->from = cpystr (ov->from->mailbox);
+ s->dirty = T;
+ }
+ if (!s->date && ov->date && mail_parse_date (&telt,ov->date)) {
+ s->date = mail_longdate (&telt);
+ s->dirty = T;
+ }
+ if (!s->message_id && ov->message_id) {
+ s->message_id = mail_thread_parse_msgid (ov->message_id,NIL);
+ s->dirty = T;
+ }
+ if (!s->references &&
+ !(s->references = mail_thread_parse_references (ov->references,T))) {
+ /* don't do In-Reply-To with NNTP mailboxes */
+ s->references = mail_newstringlist ();
+ s->dirty = T;
+ }
+ if (!s->size && ov->optional.octets) {
+ s->size = ov->optional.octets;
+ s->dirty = T;
+ }
+ }
+}
+\f
+/* Thread parse Message ID
+ * Accepts: pointer to purported Message ID
+ * pointer to return pointer
+ * Returns: Message ID or NIL, return pointer updated
+ */
+
+char *mail_thread_parse_msgid (char *s,char **ss)
+{
+ char *ret = NIL;
+ char *t = NIL;
+ ADDRESS *adr;
+ if (s) { /* only for non-NIL strings */
+ rfc822_skipws (&s); /* skip whitespace */
+ /* ignore phrases */
+ if (((*s == '<') || (s = rfc822_parse_phrase (s))) &&
+ (adr = rfc822_parse_routeaddr (s,&t,BADHOST))) {
+ /* make return msgid */
+ if (adr->mailbox && adr->host)
+ sprintf (ret = (char *) fs_get (strlen (adr->mailbox) +
+ strlen (adr->host) + 2),"%s@%s",
+ adr->mailbox,adr->host);
+ mail_free_address (&adr); /* don't need temporary address */
+ }
+ }
+ if (ss) *ss = t; /* update return pointer */
+ return ret;
+}
+
+
+/* Thread parse references
+ * Accepts: pointer to purported references
+ * parse multiple references flag
+ * Returns: references or NIL
+ */
+
+STRINGLIST *mail_thread_parse_references (char *s,long flag)
+{
+ char *t;
+ STRINGLIST *ret = NIL;
+ STRINGLIST *cur;
+ /* found first reference? */
+ if (t = mail_thread_parse_msgid (s,&s)) {
+ (ret = mail_newstringlist ())->text.data = (unsigned char *) t;
+ ret->text.size = strlen (t);
+ if (flag) /* parse subsequent references */
+ for (cur = ret; t = mail_thread_parse_msgid (s,&s); cur = cur->next) {
+ (cur->next = mail_newstringlist ())->text.data = (unsigned char *) t;
+ cur->next->text.size = strlen (t);
+ }
+ }
+ return ret;
+}
+\f
+/* Prune dummy messages
+ * Accepts: candidate container to prune
+ * older sibling of container, if any
+ * Returns: container in this position, possibly pruned
+ * All children and younger siblings are also pruned
+ */
+
+container_t mail_thread_prune_dummy (container_t msg,container_t ane)
+{
+ /* prune container and children */
+ container_t ret = msg ? mail_thread_prune_dummy_work (msg,ane) : NIL;
+ /* prune all younger sisters */
+ if (ret) for (ane = ret; ane && (msg = SIBLING (ane)); ane = msg)
+ msg = mail_thread_prune_dummy_work (msg,ane);
+ return ret;
+}
+
+
+/* Prune dummy messages worker routine
+ * Accepts: candidate container to prune
+ * older sibling of container, if any
+ * Returns: container in this position, possibly pruned
+ * All children are also pruned
+ */
+
+container_t mail_thread_prune_dummy_work (container_t msg,container_t ane)
+{
+ container_t cur;
+ /* get children, if any */
+ container_t nxt = mail_thread_prune_dummy (CHILD (msg),NIL);
+ /* just update children if container has msg */
+ if (CACHE (msg)) SETCHILD (msg,nxt);
+ else if (!nxt) { /* delete dummy with no children */
+ nxt = SIBLING (msg); /* get younger sister */
+ if (ane) SETSIBLING (ane,nxt);
+ /* prune younger sister if exists */
+ msg = nxt ? mail_thread_prune_dummy_work (nxt,ane) : NIL;
+ }
+ /* not if parent root & multiple children */
+ else if ((cur = PARENT (msg)) || !SIBLING (nxt)) {
+ /* OK to promote, try younger sister of aunt */
+ if (ane) SETSIBLING (ane,nxt);
+ /* otherwise promote to child of grandmother */
+ else if (cur) SETCHILD (cur,nxt);
+ SETPARENT (nxt,cur); /* set parent as well */
+ /* look for end of siblings in new container */
+ for (cur = nxt; SIBLING (cur); cur = SIBLING (cur));
+ /* reattach deleted container's siblings */
+ SETSIBLING (cur,SIBLING (msg));
+ /* prune and return new container */
+ msg = mail_thread_prune_dummy_work (nxt,ane);
+ }
+ else SETCHILD (msg,nxt); /* in case child pruned */
+ return msg; /* return this message */
+}
+\f
+/* Test that purported mother is not a child of purported daughter
+ * Accepts: mother
+ * purported daugher
+ * Returns: T if circular parentage exists, else NIL
+ */
+
+long mail_thread_check_child (container_t mother,container_t daughter)
+{
+ if (mother) { /* only if mother non-NIL */
+ if (mother == daughter) return T;
+ for (daughter = CHILD (daughter); daughter; daughter = SIBLING (daughter))
+ if (mail_thread_check_child (mother,daughter)) return T;
+ }
+ return NIL;
+}
+
+
+/* Generate threadnodes from containers
+ * Accepts: Mail stream
+ * container
+ * flags
+ * Return: threadnode list
+ */
+
+THREADNODE *mail_thread_c2node (MAILSTREAM *stream,container_t con,long flags)
+{
+ THREADNODE *ret,*cur;
+ SORTCACHE *s;
+ container_t nxt;
+ /* for each container */
+ for (ret = cur = NIL; con; con = SIBLING (con)) {
+ s = CACHE (con); /* yes, get its sortcache */
+ /* create node for it */
+ if (ret) cur = cur->branch = mail_newthreadnode (s);
+ else ret = cur = mail_newthreadnode (s);
+ /* attach sequence or UID for non-dummy */
+ if (s) cur->num = (flags & SE_UID) ? mail_uid (stream,s->num) : s->num;
+ /* attach the children */
+ if (nxt = CHILD (con)) cur->next = mail_thread_c2node (stream,nxt,flags);
+ }
+ return ret;
+}
+\f
+/* Sort thread tree by date
+ * Accepts: thread tree to sort
+ * qsort vector to sort
+ * Returns: sorted thread tree
+ */
+
+THREADNODE *mail_thread_sort (THREADNODE *thr,THREADNODE **tc)
+{
+ unsigned long i,j;
+ THREADNODE *cur;
+ /* sort children of each thread */
+ for (cur = thr; cur; cur = cur->branch)
+ if (cur->next) cur->next = mail_thread_sort (cur->next,tc);
+ /* Must do this in a separate pass since recursive call will clobber tc */
+ /* load threadcache and count nodes to sort */
+ for (i = 0, cur = thr; cur; cur = cur->branch) tc[i++] = cur;
+ if (i > 1) { /* only if need to sort */
+ qsort ((void *) tc,i,sizeof (THREADNODE *),mail_thread_compare_date);
+ /* relink root siblings */
+ for (j = 0, --i; j < i; j++) tc[j]->branch = tc[j+1];
+ tc[j]->branch = NIL; /* end of root */
+ }
+ return i ? tc[0] : NIL; /* return new head of list */
+}
+
+
+/* Thread compare date
+ * Accept: first message sort cache element
+ * second message sort cache element
+ * Returns: -1 if a1 < a2, 1 if a1 > a2
+ *
+ * This assumes that a sort cache element is either a message (with a
+ * sortcache entry) or a dummy with a message (with sortcache entry) child.
+ * This is true of both the ORDEREDSUBJECT (no dummies) and REFERENCES
+ * (dummies only at top-level, and with non-dummy children).
+ *
+ * If a new algorithm allows a dummy parent to have a dummy child, this
+ * routine must be changed if it is to be used by that algorithm.
+ *
+ * Messages with bogus dates are always sorted at the top.
+ */
+
+int mail_thread_compare_date (const void *a1,const void *a2)
+{
+ THREADNODE *t1 = *(THREADNODE **) a1;
+ THREADNODE *t2 = *(THREADNODE **) a2;
+ SORTCACHE *s1 = t1->sc ? t1->sc : t1->next->sc;
+ SORTCACHE *s2 = t2->sc ? t2->sc : t2->next->sc;
+ int ret = compare_ulong (s1->date,s2->date);
+ /* use number as final tie-breaker */
+ return ret ? ret : compare_ulong (s1->num,s2->num);
+}
+\f
+/* Mail parse sequence
+ * Accepts: mail stream
+ * sequence to parse
+ * Returns: T if parse successful, else NIL
+ */
+
+long mail_sequence (MAILSTREAM *stream,unsigned char *sequence)
+{
+ unsigned long i,j,x;
+ for (i = 1; i <= stream->nmsgs; i++) mail_elt (stream,i)->sequence = NIL;
+ while (sequence && *sequence){/* while there is something to parse */
+ if (*sequence == '*') { /* maximum message */
+ if (stream->nmsgs) i = stream->nmsgs;
+ else {
+ MM_LOG ("No messages, so no maximum message number",ERROR);
+ return NIL;
+ }
+ sequence++; /* skip past * */
+ }
+ /* parse and validate message number */
+ else if (!isdigit (*sequence)) {
+ MM_LOG ("Syntax error in sequence",ERROR);
+ return NIL;
+ }
+ else if (!(i = strtoul (sequence,(char **) &sequence,10)) ||
+ (i > stream->nmsgs)) {
+ MM_LOG ("Sequence out of range",ERROR);
+ return NIL;
+ }
+ switch (*sequence) { /* see what the delimiter is */
+ case ':': /* sequence range */
+ if (*++sequence == '*') { /* maximum message */
+ if (stream->nmsgs) j = stream->nmsgs;
+ else {
+ MM_LOG ("No messages, so no maximum message number",ERROR);
+ return NIL;
+ }
+ sequence++; /* skip past * */
+ }
+ /* parse end of range */
+ else if (!(j = strtoul (sequence,(char **) &sequence,10)) ||
+ (j > stream->nmsgs)) {
+ MM_LOG ("Sequence range invalid",ERROR);
+ return NIL;
+ }
+ if (*sequence && *sequence++ != ',') {
+ MM_LOG ("Sequence range syntax error",ERROR);
+ return NIL;
+ }
+ if (i > j) { /* swap the range if backwards */
+ x = i; i = j; j = x;
+ }
+ /* mark each item in the sequence */
+ while (i <= j) mail_elt (stream,j--)->sequence = T;
+ break;
+ case ',': /* single message */
+ ++sequence; /* skip the delimiter, fall into end case */
+ case '\0': /* end of sequence, mark this message */
+ mail_elt (stream,i)->sequence = T;
+ break;
+ default: /* anything else is a syntax error! */
+ MM_LOG ("Sequence syntax error",ERROR);
+ return NIL;
+ }
+ }
+ return T; /* successfully parsed sequence */
+}
+\f
+/* Parse flag list
+ * Accepts: MAIL stream
+ * flag list as a character string
+ * pointer to user flags to return
+ * Returns: system flags
+ */
+
+long mail_parse_flags (MAILSTREAM *stream,char *flag,unsigned long *uf)
+{
+ char *t,*n,*s,tmp[MAILTMPLEN],msg[MAILTMPLEN];
+ short f = 0;
+ long i,j;
+ *uf = 0; /* initially no user flags */
+ if (flag && *flag) { /* no-op if no flag string */
+ /* check if a list and make sure valid */
+ if (((i = (*flag == '(')) ^ (flag[strlen (flag)-1] == ')')) ||
+ (strlen (flag) >= MAILTMPLEN)) {
+ MM_LOG ("Bad flag list",ERROR);
+ return NIL;
+ }
+ /* copy the flag string w/o list construct */
+ strncpy (n = tmp,flag+i,(j = strlen (flag) - (2*i)));
+ tmp[j] = '\0';
+ while ((t = n) && *t) { /* parse the flags */
+ /* find end of flag */
+ if (n = strchr (t,' ')) *n++ = '\0';
+ if (*t == '\\') { /* system flag? */
+ if (!compare_cstring (t+1,"SEEN")) f |= fSEEN;
+ else if (!compare_cstring (t+1,"DELETED")) f |= fDELETED;
+ else if (!compare_cstring (t+1,"FLAGGED")) f |= fFLAGGED;
+ else if (!compare_cstring (t+1,"ANSWERED")) f |= fANSWERED;
+ else if (!compare_cstring (t+1,"DRAFT")) f |= fDRAFT;
+ else {
+ sprintf (msg,"Unsupported system flag: %.80s",t);
+ MM_LOG (msg,WARN);
+ }
+ }
+\f
+ else { /* keyword flag */
+ for (i = j = 0; /* user flag, search through table */
+ !i && (j < NUSERFLAGS) && (s = stream->user_flags[j]); ++j)
+ if (!compare_cstring (t,s)) *uf |= i = 1 << j;
+ if (!i) { /* flag not found, can it be created? */
+ if (stream->kwd_create && (j < NUSERFLAGS) &&
+ (strlen (t) <= MAXUSERFLAG)) {
+ for (s = t; t && *s; s++) switch (*s) {
+ default: /* all other characters */
+ /* SPACE, CTL, or not CHAR */
+ if ((*s > ' ') && (*s < 0x7f)) break;
+ case '*': case '%': /* list_wildcards */
+ case '"': case '\\':/* quoted-specials */
+ /* atom_specials */
+ case '(': case ')': case '{':
+ case ']': /* resp-specials */
+ sprintf (msg,"Invalid flag: %.80s",t);
+ MM_LOG (msg,WARN);
+ t = NIL;
+ }
+ if (t) { /* only if valid */
+ *uf |= 1 << j; /* set the bit */
+ stream->user_flags[j] = cpystr (t);
+ /* if out of user flags */
+ if (j == NUSERFLAGS - 1) stream->kwd_create = NIL;
+ }
+ }
+ else {
+ sprintf (msg,"Unknown flag: %.80s",t);
+ MM_LOG (msg,WARN);
+ }
+ }
+ }
+ }
+ }
+ return f;
+}
+\f
+/* Mail check network stream for usability with new name
+ * Accepts: MAIL stream
+ * candidate new name
+ * Returns: T if stream can be used, NIL otherwise
+ */
+
+long mail_usable_network_stream (MAILSTREAM *stream,char *name)
+{
+ NETMBX smb,nmb,omb;
+ return (stream && stream->dtb && !(stream->dtb->flags & DR_LOCAL) &&
+ mail_valid_net_parse (name,&nmb) &&
+ mail_valid_net_parse (stream->mailbox,&smb) &&
+ mail_valid_net_parse (stream->original_mailbox,&omb) &&
+ ((!compare_cstring (smb.host,
+ trustdns ? tcp_canonical (nmb.host) : nmb.host)&&
+ !strcmp (smb.service,nmb.service) &&
+ (!nmb.port || (smb.port == nmb.port)) &&
+ (nmb.anoflag == stream->anonymous) &&
+ (!nmb.user[0] || !strcmp (smb.user,nmb.user))) ||
+ (!compare_cstring (omb.host,nmb.host) &&
+ !strcmp (omb.service,nmb.service) &&
+ (!nmb.port || (omb.port == nmb.port)) &&
+ (nmb.anoflag == stream->anonymous) &&
+ (!nmb.user[0] || !strcmp (omb.user,nmb.user))))) ? LONGT : NIL;
+}
+\f
+/* Mail data structure instantiation routines */
+
+
+/* Mail instantiate cache elt
+ * Accepts: initial message number
+ * Returns: new cache elt
+ */
+
+MESSAGECACHE *mail_new_cache_elt (unsigned long msgno)
+{
+ MESSAGECACHE *elt = (MESSAGECACHE *) memset (fs_get (sizeof (MESSAGECACHE)),
+ 0,sizeof (MESSAGECACHE));
+ elt->lockcount = 1; /* initially only cache references it */
+ elt->msgno = msgno; /* message number */
+ return elt;
+}
+
+
+/* Mail instantiate envelope
+ * Returns: new envelope
+ */
+
+ENVELOPE *mail_newenvelope (void)
+{
+ return (ENVELOPE *) memset (fs_get (sizeof (ENVELOPE)),0,sizeof (ENVELOPE));
+}
+
+
+/* Mail instantiate address
+ * Returns: new address
+ */
+
+ADDRESS *mail_newaddr (void)
+{
+ return (ADDRESS *) memset (fs_get (sizeof (ADDRESS)),0,sizeof (ADDRESS));
+}
+\f
+/* Mail instantiate body
+ * Returns: new body
+ */
+
+BODY *mail_newbody (void)
+{
+ return mail_initbody ((BODY *) fs_get (sizeof (BODY)));
+}
+
+
+/* Mail initialize body
+ * Accepts: body
+ * Returns: body
+ */
+
+BODY *mail_initbody (BODY *body)
+{
+ memset ((void *) body,0,sizeof (BODY));
+ body->type = TYPETEXT; /* content type */
+ body->encoding = ENC7BIT; /* content encoding */
+ return body;
+}
+
+
+/* Mail instantiate body parameter
+ * Returns: new body part
+ */
+
+PARAMETER *mail_newbody_parameter (void)
+{
+ return (PARAMETER *) memset (fs_get (sizeof(PARAMETER)),0,sizeof(PARAMETER));
+}
+
+
+/* Mail instantiate body part
+ * Returns: new body part
+ */
+
+PART *mail_newbody_part (void)
+{
+ PART *part = (PART *) memset (fs_get (sizeof (PART)),0,sizeof (PART));
+ mail_initbody (&part->body); /* initialize the body */
+ return part;
+}
+
+
+/* Mail instantiate body message part
+ * Returns: new body message part
+ */
+
+MESSAGE *mail_newmsg (void)
+{
+ return (MESSAGE *) memset (fs_get (sizeof (MESSAGE)),0,sizeof (MESSAGE));
+}
+\f
+/* Mail instantiate string list
+ * Returns: new string list
+ */
+
+STRINGLIST *mail_newstringlist (void)
+{
+ return (STRINGLIST *) memset (fs_get (sizeof (STRINGLIST)),0,
+ sizeof (STRINGLIST));
+}
+
+
+/* Mail instantiate new search program
+ * Returns: new search program
+ */
+
+SEARCHPGM *mail_newsearchpgm (void)
+{
+ return (SEARCHPGM *) memset (fs_get (sizeof(SEARCHPGM)),0,sizeof(SEARCHPGM));
+}
+
+
+/* Mail instantiate new search program
+ * Accepts: header line name
+ * Returns: new search program
+ */
+
+SEARCHHEADER *mail_newsearchheader (char *line,char *text)
+{
+ SEARCHHEADER *hdr = (SEARCHHEADER *) memset (fs_get (sizeof (SEARCHHEADER)),
+ 0,sizeof (SEARCHHEADER));
+ hdr->line.size = strlen ((char *) (hdr->line.data =
+ (unsigned char *) cpystr (line)));
+ hdr->text.size = strlen ((char *) (hdr->text.data =
+ (unsigned char *) cpystr (text)));
+ return hdr;
+}
+
+
+/* Mail instantiate new search set
+ * Returns: new search set
+ */
+
+SEARCHSET *mail_newsearchset (void)
+{
+ return (SEARCHSET *) memset (fs_get (sizeof(SEARCHSET)),0,sizeof(SEARCHSET));
+}
+
+
+/* Mail instantiate new search or
+ * Returns: new search or
+ */
+
+SEARCHOR *mail_newsearchor (void)
+{
+ SEARCHOR *or = (SEARCHOR *) memset (fs_get (sizeof (SEARCHOR)),0,
+ sizeof (SEARCHOR));
+ or->first = mail_newsearchpgm ();
+ or->second = mail_newsearchpgm ();
+ return or;
+}
+\f
+/* Mail instantiate new searchpgmlist
+ * Returns: new searchpgmlist
+ */
+
+SEARCHPGMLIST *mail_newsearchpgmlist (void)
+{
+ SEARCHPGMLIST *pgl = (SEARCHPGMLIST *)
+ memset (fs_get (sizeof (SEARCHPGMLIST)),0,sizeof (SEARCHPGMLIST));
+ pgl->pgm = mail_newsearchpgm ();
+ return pgl;
+}
+
+
+/* Mail instantiate new sortpgm
+ * Returns: new sortpgm
+ */
+
+SORTPGM *mail_newsortpgm (void)
+{
+ return (SORTPGM *) memset (fs_get (sizeof (SORTPGM)),0,sizeof (SORTPGM));
+}
+
+
+/* Mail instantiate new threadnode
+ * Accepts: sort cache for thread node
+ * Returns: new threadnode
+ */
+
+THREADNODE *mail_newthreadnode (SORTCACHE *sc)
+{
+ THREADNODE *thr = (THREADNODE *) memset (fs_get (sizeof (THREADNODE)),0,
+ sizeof (THREADNODE));
+ if (sc) thr->sc = sc; /* initialize sortcache */
+ return thr;
+}
+
+
+/* Mail instantiate new acllist
+ * Returns: new acllist
+ */
+
+ACLLIST *mail_newacllist (void)
+{
+ return (ACLLIST *) memset (fs_get (sizeof (ACLLIST)),0,sizeof (ACLLIST));
+}
+
+
+/* Mail instantiate new quotalist
+ * Returns: new quotalist
+ */
+
+QUOTALIST *mail_newquotalist (void)
+{
+ return (QUOTALIST *) memset (fs_get (sizeof (QUOTALIST)),0,
+ sizeof (QUOTALIST));
+}
+\f
+/* Mail garbage collection routines */
+
+
+/* Mail garbage collect body
+ * Accepts: pointer to body pointer
+ */
+
+void mail_free_body (BODY **body)
+{
+ if (*body) { /* only free if exists */
+ mail_free_body_data (*body);/* free its data */
+ fs_give ((void **) body); /* return body to free storage */
+ }
+}
+
+
+/* Mail garbage collect body data
+ * Accepts: body pointer
+ */
+
+void mail_free_body_data (BODY *body)
+{
+ switch (body->type) { /* free contents */
+ case TYPEMULTIPART: /* multiple part */
+ mail_free_body_part (&body->nested.part);
+ break;
+ case TYPEMESSAGE: /* encapsulated message */
+ if (body->subtype && !strcmp (body->subtype,"RFC822")) {
+ mail_free_stringlist (&body->nested.msg->lines);
+ mail_gc_msg (body->nested.msg,GC_ENV | GC_TEXTS);
+ }
+ if (body->nested.msg) fs_give ((void **) &body->nested.msg);
+ break;
+ default:
+ break;
+ }
+ if (body->subtype) fs_give ((void **) &body->subtype);
+ mail_free_body_parameter (&body->parameter);
+ if (body->id) fs_give ((void **) &body->id);
+ if (body->description) fs_give ((void **) &body->description);
+ if (body->disposition.type) fs_give ((void **) &body->disposition.type);
+ if (body->disposition.parameter)
+ mail_free_body_parameter (&body->disposition.parameter);
+ if (body->language) mail_free_stringlist (&body->language);
+ if (body->location) fs_give ((void **) &body->location);
+ if (body->mime.text.data) fs_give ((void **) &body->mime.text.data);
+ if (body->contents.text.data) fs_give ((void **) &body->contents.text.data);
+ if (body->md5) fs_give ((void **) &body->md5);
+ if (mailfreebodysparep && body->sparep)
+ (*mailfreebodysparep) (&body->sparep);
+}
+\f
+/* Mail garbage collect body parameter
+ * Accepts: pointer to body parameter pointer
+ */
+
+void mail_free_body_parameter (PARAMETER **parameter)
+{
+ if (*parameter) { /* only free if exists */
+ if ((*parameter)->attribute) fs_give ((void **) &(*parameter)->attribute);
+ if ((*parameter)->value) fs_give ((void **) &(*parameter)->value);
+ /* run down the list as necessary */
+ mail_free_body_parameter (&(*parameter)->next);
+ /* return body part to free storage */
+ fs_give ((void **) parameter);
+ }
+}
+
+
+/* Mail garbage collect body part
+ * Accepts: pointer to body part pointer
+ */
+
+void mail_free_body_part (PART **part)
+{
+ if (*part) { /* only free if exists */
+ mail_free_body_data (&(*part)->body);
+ /* run down the list as necessary */
+ mail_free_body_part (&(*part)->next);
+ fs_give ((void **) part); /* return body part to free storage */
+ }
+}
+\f
+/* Mail garbage collect message cache
+ * Accepts: mail stream
+ *
+ * The message cache is set to NIL when this function finishes.
+ */
+
+void mail_free_cache (MAILSTREAM *stream)
+{
+ /* do driver specific stuff first */
+ mail_gc (stream,GC_ELT | GC_ENV | GC_TEXTS);
+ /* flush the cache */
+ (*mailcache) (stream,(long) 0,CH_INIT);
+}
+
+
+/* Mail garbage collect cache element
+ * Accepts: pointer to cache element pointer
+ */
+
+void mail_free_elt (MESSAGECACHE **elt)
+{
+ /* only free if exists and no sharers */
+ if (*elt && !--(*elt)->lockcount) {
+ mail_gc_msg (&(*elt)->private.msg,GC_ENV | GC_TEXTS);
+ if (mailfreeeltsparep && (*elt)->sparep)
+ (*mailfreeeltsparep) (&(*elt)->sparep);
+ fs_give ((void **) elt);
+ }
+ else *elt = NIL; /* else simply drop pointer */
+}
+\f
+/* Mail garbage collect envelope
+ * Accepts: pointer to envelope pointer
+ */
+
+void mail_free_envelope (ENVELOPE **env)
+{
+ if (*env) { /* only free if exists */
+ if ((*env)->remail) fs_give ((void **) &(*env)->remail);
+ mail_free_address (&(*env)->return_path);
+ if ((*env)->date) fs_give ((void **) &(*env)->date);
+ mail_free_address (&(*env)->from);
+ mail_free_address (&(*env)->sender);
+ mail_free_address (&(*env)->reply_to);
+ if ((*env)->subject) fs_give ((void **) &(*env)->subject);
+ mail_free_address (&(*env)->to);
+ mail_free_address (&(*env)->cc);
+ mail_free_address (&(*env)->bcc);
+ if ((*env)->in_reply_to) fs_give ((void **) &(*env)->in_reply_to);
+ if ((*env)->message_id) fs_give ((void **) &(*env)->message_id);
+ if ((*env)->newsgroups) fs_give ((void **) &(*env)->newsgroups);
+ if ((*env)->followup_to) fs_give ((void **) &(*env)->followup_to);
+ if ((*env)->references) fs_give ((void **) &(*env)->references);
+ if (mailfreeenvelopesparep && (*env)->sparep)
+ (*mailfreeenvelopesparep) (&(*env)->sparep);
+ fs_give ((void **) env); /* return envelope to free storage */
+ }
+}
+
+
+/* Mail garbage collect address
+ * Accepts: pointer to address pointer
+ */
+
+void mail_free_address (ADDRESS **address)
+{
+ if (*address) { /* only free if exists */
+ if ((*address)->personal) fs_give ((void **) &(*address)->personal);
+ if ((*address)->adl) fs_give ((void **) &(*address)->adl);
+ if ((*address)->mailbox) fs_give ((void **) &(*address)->mailbox);
+ if ((*address)->host) fs_give ((void **) &(*address)->host);
+ if ((*address)->error) fs_give ((void **) &(*address)->error);
+ if ((*address)->orcpt.type) fs_give ((void **) &(*address)->orcpt.type);
+ if ((*address)->orcpt.addr) fs_give ((void **) &(*address)->orcpt.addr);
+ mail_free_address (&(*address)->next);
+ fs_give ((void **) address);/* return address to free storage */
+ }
+}
+
+
+/* Mail garbage collect stringlist
+ * Accepts: pointer to stringlist pointer
+ */
+
+void mail_free_stringlist (STRINGLIST **string)
+{
+ if (*string) { /* only free if exists */
+ if ((*string)->text.data) fs_give ((void **) &(*string)->text.data);
+ mail_free_stringlist (&(*string)->next);
+ fs_give ((void **) string); /* return string to free storage */
+ }
+}
+\f
+/* Mail garbage collect searchpgm
+ * Accepts: pointer to searchpgm pointer
+ */
+
+void mail_free_searchpgm (SEARCHPGM **pgm)
+{
+ if (*pgm) { /* only free if exists */
+ mail_free_searchset (&(*pgm)->msgno);
+ mail_free_searchset (&(*pgm)->uid);
+ mail_free_searchor (&(*pgm)->or);
+ mail_free_searchpgmlist (&(*pgm)->not);
+ mail_free_searchheader (&(*pgm)->header);
+ mail_free_stringlist (&(*pgm)->bcc);
+ mail_free_stringlist (&(*pgm)->body);
+ mail_free_stringlist (&(*pgm)->cc);
+ mail_free_stringlist (&(*pgm)->from);
+ mail_free_stringlist (&(*pgm)->keyword);
+ mail_free_stringlist (&(*pgm)->subject);
+ mail_free_stringlist (&(*pgm)->text);
+ mail_free_stringlist (&(*pgm)->to);
+ fs_give ((void **) pgm); /* return program to free storage */
+ }
+}
+
+
+/* Mail garbage collect searchheader
+ * Accepts: pointer to searchheader pointer
+ */
+
+void mail_free_searchheader (SEARCHHEADER **hdr)
+{
+ if (*hdr) { /* only free if exists */
+ if ((*hdr)->line.data) fs_give ((void **) &(*hdr)->line.data);
+ if ((*hdr)->text.data) fs_give ((void **) &(*hdr)->text.data);
+ mail_free_searchheader (&(*hdr)->next);
+ fs_give ((void **) hdr); /* return header to free storage */
+ }
+}
+
+
+/* Mail garbage collect searchset
+ * Accepts: pointer to searchset pointer
+ */
+
+void mail_free_searchset (SEARCHSET **set)
+{
+ if (*set) { /* only free if exists */
+ mail_free_searchset (&(*set)->next);
+ fs_give ((void **) set); /* return set to free storage */
+ }
+}
+\f
+/* Mail garbage collect searchor
+ * Accepts: pointer to searchor pointer
+ */
+
+void mail_free_searchor (SEARCHOR **orl)
+{
+ if (*orl) { /* only free if exists */
+ mail_free_searchpgm (&(*orl)->first);
+ mail_free_searchpgm (&(*orl)->second);
+ mail_free_searchor (&(*orl)->next);
+ fs_give ((void **) orl); /* return searchor to free storage */
+ }
+}
+
+
+/* Mail garbage collect search program list
+ * Accepts: pointer to searchpgmlist pointer
+ */
+
+void mail_free_searchpgmlist (SEARCHPGMLIST **pgl)
+{
+ if (*pgl) { /* only free if exists */
+ mail_free_searchpgm (&(*pgl)->pgm);
+ mail_free_searchpgmlist (&(*pgl)->next);
+ fs_give ((void **) pgl); /* return searchpgmlist to free storage */
+ }
+}
+
+
+/* Mail garbage collect namespace
+ * Accepts: poiner to namespace
+ */
+
+void mail_free_namespace (NAMESPACE **n)
+{
+ if (*n) {
+ fs_give ((void **) &(*n)->name);
+ mail_free_namespace (&(*n)->next);
+ mail_free_body_parameter (&(*n)->param);
+ fs_give ((void **) n); /* return namespace to free storage */
+ }
+}
+\f
+/* Mail garbage collect sort program
+ * Accepts: pointer to sortpgm pointer
+ */
+
+void mail_free_sortpgm (SORTPGM **pgm)
+{
+ if (*pgm) { /* only free if exists */
+ mail_free_sortpgm (&(*pgm)->next);
+ fs_give ((void **) pgm); /* return sortpgm to free storage */
+ }
+}
+
+
+/* Mail garbage collect thread node
+ * Accepts: pointer to threadnode pointer
+ */
+
+void mail_free_threadnode (THREADNODE **thr)
+{
+ if (*thr) { /* only free if exists */
+ mail_free_threadnode (&(*thr)->branch);
+ mail_free_threadnode (&(*thr)->next);
+ fs_give ((void **) thr); /* return threadnode to free storage */
+ }
+}
+
+
+/* Mail garbage collect acllist
+ * Accepts: pointer to acllist pointer
+ */
+
+void mail_free_acllist (ACLLIST **al)
+{
+ if (*al) { /* only free if exists */
+ if ((*al)->identifier) fs_give ((void **) &(*al)->identifier);
+ if ((*al)->rights) fs_give ((void **) &(*al)->rights);
+ mail_free_acllist (&(*al)->next);
+ fs_give ((void **) al); /* return acllist to free storage */
+ }
+}
+
+
+/* Mail garbage collect quotalist
+ * Accepts: pointer to quotalist pointer
+ */
+
+void mail_free_quotalist (QUOTALIST **ql)
+{
+ if (*ql) { /* only free if exists */
+ if ((*ql)->name) fs_give ((void **) &(*ql)->name);
+ mail_free_quotalist (&(*ql)->next);
+ fs_give ((void **) ql); /* return quotalist to free storage */
+ }
+}
+\f
+/* Link authenicator
+ * Accepts: authenticator to add to list
+ */
+
+void auth_link (AUTHENTICATOR *auth)
+{
+ if (!auth->valid || (*auth->valid) ()) {
+ AUTHENTICATOR **a = &mailauthenticators;
+ while (*a) a = &(*a)->next; /* find end of list of authenticators */
+ *a = auth; /* put authenticator at the end */
+ auth->next = NIL; /* this authenticator is the end of the list */
+ }
+}
+
+
+/* Authenticate access
+ * Accepts: mechanism name
+ * responder function
+ * argument count
+ * argument vector
+ * Returns: authenticated user name or NIL
+ */
+
+char *mail_auth (char *mechanism,authresponse_t resp,int argc,char *argv[])
+{
+ AUTHENTICATOR *auth;
+ for (auth = mailauthenticators; auth; auth = auth->next)
+ if (auth->server && !compare_cstring (auth->name,mechanism))
+ return (!(auth->flags & AU_DISABLE) &&
+ ((auth->flags & AU_SECURE) ||
+ !mail_parameters (NIL,GET_DISABLEPLAINTEXT,NIL))) ?
+ (*auth->server) (resp,argc,argv) : NIL;
+ return NIL; /* no authenticator found */
+}
+\f
+/* Lookup authenticator index
+ * Accepts: authenticator index
+ * Returns: authenticator, or 0 if not found
+ */
+
+AUTHENTICATOR *mail_lookup_auth (unsigned long i)
+{
+ AUTHENTICATOR *auth = mailauthenticators;
+ while (auth && --i) auth = auth->next;
+ return auth;
+}
+
+
+/* Lookup authenticator name
+ * Accepts: authenticator name
+ * required authenticator flags
+ * Returns: index in authenticator chain, or 0 if not found
+ */
+
+unsigned int mail_lookup_auth_name (char *mechanism,long flags)
+{
+ int i;
+ AUTHENTICATOR *auth;
+ for (i = 1, auth = mailauthenticators; auth; i++, auth = auth->next)
+ if (auth->client && !(flags & ~auth->flags) &&
+ !(auth->flags & AU_DISABLE) && !compare_cstring (auth->name,mechanism))
+ return i;
+ return 0;
+}
+\f
+/* Standard TCP/IP network driver */
+
+static NETDRIVER tcpdriver = {
+ tcp_open, /* open connection */
+ tcp_aopen, /* open preauthenticated connection */
+ tcp_getline, /* get a line */
+ tcp_getbuffer, /* get a buffer */
+ tcp_soutr, /* output pushed data */
+ tcp_sout, /* output string */
+ tcp_close, /* close connection */
+ tcp_host, /* return host name */
+ tcp_remotehost, /* return remote host name */
+ tcp_port, /* return port number */
+ tcp_localhost /* return local host name */
+};
+
+
+/* Network open
+ * Accepts: NETMBX specifier to open
+ * default network driver
+ * default port
+ * SSL driver
+ * SSL service name
+ * SSL driver port
+ * Returns: Network stream if success, else NIL
+ */
+
+NETSTREAM *net_open (NETMBX *mb,NETDRIVER *dv,unsigned long port,
+ NETDRIVER *ssld,char *ssls,unsigned long sslp)
+{
+ NETSTREAM *stream = NIL;
+ char tmp[MAILTMPLEN];
+ unsigned long flags = mb->novalidate ? NET_NOVALIDATECERT : 0;
+ if (strlen (mb->host) >= NETMAXHOST) {
+ sprintf (tmp,"Invalid host name: %.80s",mb->host);
+ MM_LOG (tmp,ERROR);
+ }
+ /* use designated driver if given */
+ else if (dv) stream = net_open_work (dv,mb->host,mb->service,port,mb->port,
+ flags);
+ else if (mb->sslflag && ssld) /* use ssl if sslflag lit */
+ stream = net_open_work (ssld,mb->host,ssls,sslp,mb->port,flags);
+ /* if trysslfirst and can open ssl... */
+ else if ((mb->trysslflag || trysslfirst) && ssld &&
+ (stream = net_open_work (ssld,mb->host,ssls,sslp,mb->port,
+ flags | NET_SILENT | NET_TRYSSL))) {
+ if (net_sout (stream,"",0)) mb->sslflag = T;
+ else {
+ net_close (stream); /* flush fake SSL stream */
+ stream = NIL;
+ }
+ }
+ /* default to TCP driver */
+ else stream = net_open_work (&tcpdriver,mb->host,mb->service,port,mb->port,
+ flags);
+ return stream;
+}
+\f
+/* Network open worker routine
+ * Accepts: network driver
+ * host name
+ * service name to look up port
+ * port number if service name not found
+ * port number to override service name
+ * flags (passed on top of port)
+ * Returns: Network stream if success, else NIL
+ */
+
+NETSTREAM *net_open_work (NETDRIVER *dv,char *host,char *service,
+ unsigned long port,unsigned long portoverride,
+ unsigned long flags)
+{
+ NETSTREAM *stream = NIL;
+ void *tstream;
+ if (service && (*service == '*')) {
+ flags |= NET_NOOPENTIMEOUT; /* mark that no timeout is desired */
+ ++service; /* no longer need the no timeout indicator */
+ }
+ if (portoverride) { /* explicit port number? */
+ service = NIL; /* yes, override service name */
+ port = portoverride; /* use that instead of default port */
+ }
+ if (tstream = (*dv->open) (host,service,port | flags)) {
+ stream = (NETSTREAM *) fs_get (sizeof (NETSTREAM));
+ stream->stream = tstream;
+ stream->dtb = dv;
+ }
+ return stream;
+}
+
+
+/* Network authenticated open
+ * Accepts: network driver
+ * NETMBX specifier
+ * service specifier
+ * return user name buffer
+ * Returns: Network stream if success else NIL
+ */
+
+NETSTREAM *net_aopen (NETDRIVER *dv,NETMBX *mb,char *service,char *user)
+{
+ NETSTREAM *stream = NIL;
+ void *tstream;
+ if (!dv) dv = &tcpdriver; /* default to TCP driver */
+ if (tstream = (*dv->aopen) (mb,service,user)) {
+ stream = (NETSTREAM *) fs_get (sizeof (NETSTREAM));
+ stream->stream = tstream;
+ stream->dtb = dv;
+ }
+ return stream;
+}
+\f
+/* Network receive line
+ * Accepts: Network stream
+ * Returns: text line string or NIL if failure
+ */
+
+char *net_getline (NETSTREAM *stream)
+{
+ return (*stream->dtb->getline) (stream->stream);
+}
+
+
+/* Network receive buffer
+ * Accepts: Network stream (must be void * for use as readfn_t)
+ * size in bytes
+ * buffer to read into
+ * Returns: T if success, NIL otherwise
+ */
+
+long net_getbuffer (void *st,unsigned long size,char *buffer)
+{
+ NETSTREAM *stream = (NETSTREAM *) st;
+ return (*stream->dtb->getbuffer) (stream->stream,size,buffer);
+}
+
+
+/* Network send null-terminated string
+ * Accepts: Network stream
+ * string pointer
+ * Returns: T if success else NIL
+ */
+
+long net_soutr (NETSTREAM *stream,char *string)
+{
+ return (*stream->dtb->soutr) (stream->stream,string);
+}
+
+
+/* Network send string
+ * Accepts: Network stream
+ * string pointer
+ * byte count
+ * Returns: T if success else NIL
+ */
+
+long net_sout (NETSTREAM *stream,char *string,unsigned long size)
+{
+ return (*stream->dtb->sout) (stream->stream,string,size);
+}
+\f
+/* Network close
+ * Accepts: Network stream
+ */
+
+void net_close (NETSTREAM *stream)
+{
+ if (stream->stream) (*stream->dtb->close) (stream->stream);
+ fs_give ((void **) &stream);
+}
+
+
+/* Network get host name
+ * Accepts: Network stream
+ * Returns: host name for this stream
+ */
+
+char *net_host (NETSTREAM *stream)
+{
+ return (*stream->dtb->host) (stream->stream);
+}
+
+
+/* Network get remote host name
+ * Accepts: Network stream
+ * Returns: host name for this stream
+ */
+
+char *net_remotehost (NETSTREAM *stream)
+{
+ return (*stream->dtb->remotehost) (stream->stream);
+}
+\f
+/* Network return port for this stream
+ * Accepts: Network stream
+ * Returns: port number for this stream
+ */
+
+unsigned long net_port (NETSTREAM *stream)
+{
+ return (*stream->dtb->port) (stream->stream);
+}
+
+
+/* Network get local host name
+ * Accepts: Network stream
+ * Returns: local host name
+ */
+
+char *net_localhost (NETSTREAM *stream)
+{
+ return (*stream->dtb->localhost) (stream->stream);
+}
projects / uw-imap / commitdiff