--- /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: MX mail routines
+ *
+ * Author(s): Mark Crispin
+ * Networks and Distributed Computing
+ * Computing & Communications
+ * University of Washington
+ * Administration Building, AG-44
+ * Seattle, WA 98195
+ * Internet: MRC@CAC.Washington.EDU
+ *
+ * Date: 3 May 1996
+ * Last Edited: 6 January 2008
+ */
+
+
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+extern int errno; /* just in case */
+#include "mail.h"
+#include "osdep.h"
+#include <pwd.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include "misc.h"
+#include "dummy.h"
+#include "fdstring.h"
+\f
+/* Index file */
+
+#define MXINDEXNAME "/.mxindex"
+#define MXINDEX(d,s) strcat (mx_file (d,s),MXINDEXNAME)
+
+
+/* MX I/O stream local data */
+
+typedef struct mx_local {
+ int fd; /* file descriptor of open index */
+ unsigned char *buf; /* temporary buffer */
+ unsigned long buflen; /* current size of temporary buffer */
+ unsigned long cachedtexts; /* total size of all cached texts */
+ time_t scantime; /* last time directory scanned */
+} MXLOCAL;
+
+
+/* Convenient access to local data */
+
+#define LOCAL ((MXLOCAL *) stream->local)
+
+
+/* Function prototypes */
+
+DRIVER *mx_valid (char *name);
+int mx_isvalid (char *name,char *tmp);
+int mx_namevalid (char *name);
+void *mx_parameters (long function,void *value);
+long mx_dirfmttest (char *name);
+void mx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+long mx_scan_contents (char *name,char *contents,unsigned long csiz,
+ unsigned long fsiz);
+void mx_list (MAILSTREAM *stream,char *ref,char *pat);
+void mx_lsub (MAILSTREAM *stream,char *ref,char *pat);
+long mx_subscribe (MAILSTREAM *stream,char *mailbox);
+long mx_unsubscribe (MAILSTREAM *stream,char *mailbox);
+long mx_create (MAILSTREAM *stream,char *mailbox);
+long mx_delete (MAILSTREAM *stream,char *mailbox);
+long mx_rename (MAILSTREAM *stream,char *old,char *newname);
+int mx_rename_work (char *src,size_t srcl,char *dst,size_t dstl,char *name);
+MAILSTREAM *mx_open (MAILSTREAM *stream);
+void mx_close (MAILSTREAM *stream,long options);
+void mx_fast (MAILSTREAM *stream,char *sequence,long flags);
+char *mx_fast_work (MAILSTREAM *stream,MESSAGECACHE *elt);
+char *mx_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags);
+long mx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
+void mx_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags);
+void mx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt);
+long mx_ping (MAILSTREAM *stream);
+void mx_check (MAILSTREAM *stream);
+long mx_expunge (MAILSTREAM *stream,char *sequence,long options);
+long mx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
+ long options);
+long mx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+long mx_append_msg (MAILSTREAM *stream,char *flags,MESSAGECACHE *elt,
+ STRING *st,SEARCHSET *set);
+
+int mx_select (struct direct *name);
+int mx_numsort (const void *d1,const void *d2);
+char *mx_file (char *dst,char *name);
+long mx_lockindex (MAILSTREAM *stream);
+void mx_unlockindex (MAILSTREAM *stream);
+void mx_setdate (char *file,MESSAGECACHE *elt);
+
+\f
+/* MX mail routines */
+
+
+/* Driver dispatch used by MAIL */
+
+DRIVER mxdriver = {
+ "mx", /* driver name */
+ /* driver flags */
+ DR_MAIL|DR_LOCAL|DR_NOFAST|DR_CRLF|DR_LOCKING|DR_DIRFMT,
+ (DRIVER *) NIL, /* next driver */
+ mx_valid, /* mailbox is valid for us */
+ mx_parameters, /* manipulate parameters */
+ mx_scan, /* scan mailboxes */
+ mx_list, /* find mailboxes */
+ mx_lsub, /* find subscribed mailboxes */
+ mx_subscribe, /* subscribe to mailbox */
+ mx_unsubscribe, /* unsubscribe from mailbox */
+ mx_create, /* create mailbox */
+ mx_delete, /* delete mailbox */
+ mx_rename, /* rename mailbox */
+ mail_status_default, /* status of mailbox */
+ mx_open, /* open mailbox */
+ mx_close, /* close mailbox */
+ mx_fast, /* fetch message "fast" attributes */
+ NIL, /* fetch message flags */
+ NIL, /* fetch overview */
+ NIL, /* fetch message envelopes */
+ mx_header, /* fetch message header only */
+ mx_text, /* fetch message body only */
+ NIL, /* fetch partial message test */
+ NIL, /* unique identifier */
+ NIL, /* message number */
+ mx_flag, /* modify flags */
+ mx_flagmsg, /* per-message modify flags */
+ NIL, /* search for message based on criteria */
+ NIL, /* sort messages */
+ NIL, /* thread messages */
+ mx_ping, /* ping mailbox to see if still alive */
+ mx_check, /* check for new messages */
+ mx_expunge, /* expunge deleted messages */
+ mx_copy, /* copy messages to another mailbox */
+ mx_append, /* append string message to mailbox */
+ NIL /* garbage collect stream */
+};
+
+ /* prototype stream */
+MAILSTREAM mxproto = {&mxdriver};
+\f
+/* MX mail validate mailbox
+ * Accepts: mailbox name
+ * Returns: our driver if name is valid, NIL otherwise
+ */
+
+DRIVER *mx_valid (char *name)
+{
+ char tmp[MAILTMPLEN];
+ return mx_isvalid (name,tmp) ? &mxdriver : NIL;
+}
+
+
+/* MX mail test for valid mailbox
+ * Accepts: mailbox name
+ * temporary buffer to use
+ * Returns: T if valid, NIL otherwise with errno holding dir stat error
+ */
+
+int mx_isvalid (char *name,char *tmp)
+{
+ struct stat sbuf;
+ errno = NIL; /* zap error */
+ if ((strlen (name) <= NETMAXMBX) && *mx_file (tmp,name) &&
+ !stat (tmp,&sbuf) && ((sbuf.st_mode & S_IFMT) == S_IFDIR)) {
+ /* name is directory; is it mx? */
+ if (!stat (MXINDEX (tmp,name),&sbuf) &&
+ ((sbuf.st_mode & S_IFMT) == S_IFREG)) return T;
+ errno = NIL; /* directory but not mx */
+ }
+ else if (!compare_cstring (name,"INBOX")) errno = NIL;
+ return NIL;
+}
+
+
+/* MX mail test for valid mailbox
+ * Accepts: mailbox name
+ * Returns: T if valid, NIL otherwise
+ */
+
+int mx_namevalid (char *name)
+{
+ char *s = (*name == '/') ? name + 1 : name;
+ while (s && *s) { /* make sure valid name */
+ if (isdigit (*s)) s++; /* digit, check this node further... */
+ else if (*s == '/') break; /* all digit node, barf */
+ /* non-digit, skip to next node or return */
+ else if (!((s = strchr (s+1,'/')) && *++s)) return T;
+ }
+ return NIL; /* all numeric or empty node */
+}
+\f
+/* MX manipulate driver parameters
+ * Accepts: function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *mx_parameters (long function,void *value)
+{
+ void *ret = NIL;
+ switch ((int) function) {
+ case GET_INBOXPATH:
+ if (value) ret = mailboxfile ((char *) value,"~/INBOX");
+ break;
+ case GET_DIRFMTTEST:
+ ret = (void *) mx_dirfmttest;
+ break;
+ case GET_SCANCONTENTS:
+ ret = (void *) mx_scan_contents;
+ break;
+ }
+ return ret;
+}
+
+
+/* MX test for directory format internal node
+ * Accepts: candidate node name
+ * Returns: T if internal name, NIL otherwise
+ */
+
+long mx_dirfmttest (char *name)
+{
+ int c;
+ /* success if index name or all-numberic */
+ if (strcmp (name,MXINDEXNAME+1))
+ while (c = *name++) if (!isdigit (c)) return NIL;
+ return LONGT;
+}
+\f
+/* MX scan mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ * string to scan
+ */
+
+void mx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
+{
+ if (stream) dummy_scan (NIL,ref,pat,contents);
+}
+
+
+/* MX scan mailbox for contents
+ * Accepts: mailbox name
+ * desired contents
+ * contents size
+ * file size (ignored)
+ * Returns: NIL if contents not found, T if found
+ */
+
+long mx_scan_contents (char *name,char *contents,unsigned long csiz,
+ unsigned long fsiz)
+{
+ long i,nfiles;
+ void *a;
+ char *s;
+ long ret = NIL;
+ size_t namelen = strlen (name);
+ struct stat sbuf;
+ struct direct **names = NIL;
+ if ((nfiles = scandir (name,&names,mx_select,mx_numsort)) > 0)
+ for (i = 0; i < nfiles; ++i) {
+ if (!ret) {
+ sprintf (s = (char *) fs_get (namelen + strlen (names[i]->d_name) + 2),
+ "%s/%s",name,names[i]->d_name);
+ if (!stat (s,&sbuf) && (csiz <= sbuf.st_size))
+ ret = dummy_scan_contents (s,contents,csiz,sbuf.st_size);
+ fs_give ((void **) &s);
+ }
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory list */
+ if (a = (void *) names) fs_give ((void **) &a);
+ return ret;
+}
+\f
+/* MX list mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mx_list (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_list (NIL,ref,pat);
+}
+
+
+/* MX list subscribed mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mx_lsub (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_lsub (NIL,ref,pat);
+}
+\f
+/* MX mail subscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to add to subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_subscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_subscribe (mailbox);
+}
+
+
+/* MX mail unsubscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to delete from subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_unsubscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_unsubscribe (mailbox);
+}
+\f
+/* MX mail create mailbox
+ * Accepts: mail stream
+ * mailbox name to create
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_create (MAILSTREAM *stream,char *mailbox)
+{
+ DRIVER *test;
+ int fd;
+ char *s,tmp[MAILTMPLEN];
+ int mask = umask (0);
+ long ret = NIL;
+ if (!mx_namevalid (mailbox)) /* validate name */
+ sprintf (tmp,"Can't create mailbox %.80s: invalid MX-format name",mailbox);
+ /* must not already exist */
+ else if ((test = mail_valid (NIL,mailbox,NIL)) &&
+ strcmp (test->name,"dummy"))
+ sprintf (tmp,"Can't create mailbox %.80s: mailbox already exists",mailbox);
+ /* create directory */
+ else if (!dummy_create_path (stream,MXINDEX (tmp,mailbox),
+ get_dir_protection (mailbox)))
+ sprintf (tmp,"Can't create mailbox %.80s: %s",mailbox,strerror (errno));
+ else { /* success */
+ /* set index protection */
+ set_mbx_protections (mailbox,tmp);
+ /* tie off directory name */
+ *(s = strrchr (tmp,'/') + 1) = '\0';
+ /* set directory protection */
+ set_mbx_protections (mailbox,tmp);
+ ret = LONGT;
+ }
+ umask (mask); /* restore mask */
+ if (!ret) MM_LOG (tmp,ERROR); /* some error */
+ return ret;
+}
+\f
+/* MX mail delete mailbox
+ * mailbox name to delete
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_delete (MAILSTREAM *stream,char *mailbox)
+{
+ DIR *dirp;
+ struct direct *d;
+ char *s;
+ char tmp[MAILTMPLEN];
+ if (!mx_isvalid (mailbox,tmp))
+ sprintf (tmp,"Can't delete mailbox %.80s: no such mailbox",mailbox);
+ /* delete index */
+ else if (unlink (MXINDEX (tmp,mailbox)))
+ sprintf (tmp,"Can't delete mailbox %.80s index: %s",
+ mailbox,strerror (errno));
+ else { /* get directory name */
+ *(s = strrchr (tmp,'/')) = '\0';
+ if (dirp = opendir (tmp)) { /* open directory */
+ *s++ = '/'; /* restore delimiter */
+ /* massacre messages */
+ while (d = readdir (dirp)) if (mx_select (d)) {
+ strcpy (s,d->d_name); /* make path */
+ unlink (tmp); /* sayonara */
+ }
+ closedir (dirp); /* flush directory */
+ *(s = strrchr (tmp,'/')) = '\0';
+ if (rmdir (tmp)) { /* try to remove the directory */
+ sprintf (tmp,"Can't delete name %.80s: %s",mailbox,strerror (errno));
+ MM_LOG (tmp,WARN);
+ }
+ }
+ return T; /* always success */
+ }
+ MM_LOG (tmp,ERROR); /* something failed */
+ return NIL;
+}
+\f
+/* MX mail rename mailbox
+ * Accepts: MX mail stream
+ * old mailbox name
+ * new mailbox name
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_rename (MAILSTREAM *stream,char *old,char *newname)
+{
+ char c,*s,tmp[MAILTMPLEN],tmp1[MAILTMPLEN];
+ struct stat sbuf;
+ if (!mx_isvalid (old,tmp))
+ sprintf (tmp,"Can't rename mailbox %.80s: no such mailbox",old);
+ else if (!mx_namevalid (newname))
+ sprintf (tmp,"Can't rename to mailbox %.80s: invalid MX-format name",
+ newname);
+ /* new mailbox name must not be valid */
+ else if (mx_isvalid (newname,tmp))
+ sprintf (tmp,"Can't rename to mailbox %.80s: destination already exists",
+ newname);
+ else {
+ mx_file (tmp,old); /* build old directory name */
+ mx_file (tmp1,newname); /* and new directory name */
+ /* easy if not INBOX */
+ if (compare_cstring (old,"INBOX")) {
+ /* found superior to destination name? */
+ if (s = strrchr (mx_file (tmp1,newname),'/')) {
+ c = *++s; /* remember first character of inferior */
+ *s = '\0'; /* tie off to get just superior */
+ /* name doesn't exist, create it */
+ if ((stat (tmp1,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
+ !dummy_create_path (stream,tmp1,get_dir_protection (newname)))
+ return NIL;
+ *s = c; /* restore full name */
+ }
+ if (!rename (tmp,tmp1)) return LONGT;
+ }
+\f
+ /* RFC 3501 requires this */
+ else if (dummy_create_path (stream,strcat (tmp1,"/"),
+ get_dir_protection (newname))) {
+ void *a;
+ int i,n,lasterror;
+ struct direct **names = NIL;
+ size_t srcl = strlen (tmp);
+ size_t dstl = strlen (tmp1);
+ /* rename each mx file to new directory */
+ for (i = lasterror = 0,n = scandir (tmp,&names,mx_select,mx_numsort);
+ i < n; ++i) {
+ if (mx_rename_work (tmp,srcl,tmp1,dstl,names[i]->d_name))
+ lasterror = errno;
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory list */
+ if (a = (void *) names) fs_give ((void **) &a);
+ if (lasterror || mx_rename_work (tmp,srcl,tmp1,dstl,MXINDEXNAME+1))
+ errno = lasterror;
+ else return mx_create (NIL,"INBOX");
+ }
+ sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %s",
+ old,newname,strerror (errno));
+ }
+ MM_LOG (tmp,ERROR); /* something failed */
+ return NIL;
+}
+
+
+/* MX rename worker routine
+ * Accepts: source directory name
+ * source directory name length
+ * destination directory name
+ * destination directory name length
+ * name of node to move
+ * Returns: zero if success, non-zero if error
+ */
+
+int mx_rename_work (char *src,size_t srcl,char *dst,size_t dstl,char *name)
+{
+ int ret;
+ size_t len = strlen (name);
+ char *s = (char *) fs_get (srcl + len + 2);
+ char *d = (char *) fs_get (dstl + len + 1);
+ sprintf (s,"%s/%s",src,name);
+ sprintf (d,"%s%s",dst,name);
+ ret = rename (s,d);
+ fs_give ((void **) &s);
+ fs_give ((void **) &d);
+ return ret;
+}
+\f
+/* MX mail open
+ * Accepts: stream to open
+ * Returns: stream on success, NIL on failure
+ */
+
+MAILSTREAM *mx_open (MAILSTREAM *stream)
+{
+ char tmp[MAILTMPLEN];
+ /* return prototype for OP_PROTOTYPE call */
+ if (!stream) return user_flags (&mxproto);
+ if (stream->local) fatal ("mx recycle stream");
+ stream->local = fs_get (sizeof (MXLOCAL));
+ /* note if an INBOX or not */
+ stream->inbox = !compare_cstring (stream->mailbox,"INBOX");
+ mx_file (tmp,stream->mailbox);/* get directory name */
+ /* canonicalize mailbox name */
+ fs_give ((void **) &stream->mailbox);
+ stream->mailbox = cpystr (tmp);
+ /* make temporary buffer */
+ LOCAL->buf = (char *) fs_get (CHUNKSIZE);
+ LOCAL->buflen = CHUNKSIZE - 1;
+ LOCAL->scantime = 0; /* not scanned yet */
+ LOCAL->fd = -1; /* no index yet */
+ LOCAL->cachedtexts = 0; /* no cached texts */
+ stream->sequence++; /* bump sequence number */
+ /* parse mailbox */
+ stream->nmsgs = stream->recent = 0;
+ if (mx_ping (stream) && !(stream->nmsgs || stream->silent))
+ MM_LOG ("Mailbox is empty",(long) NIL);
+ stream->perm_seen = stream->perm_deleted = stream->perm_flagged =
+ stream->perm_answered = stream->perm_draft = stream->rdonly ? NIL : T;
+ stream->perm_user_flags = stream->rdonly ? NIL : 0xffffffff;
+ stream->kwd_create = (stream->user_flags[NUSERFLAGS-1] || stream->rdonly) ?
+ NIL : T; /* can we create new user flags? */
+ return stream; /* return stream to caller */
+}
+\f
+/* MX mail close
+ * Accepts: MAIL stream
+ * close options
+ */
+
+void mx_close (MAILSTREAM *stream,long options)
+{
+ if (LOCAL) { /* only if a file is open */
+ int silent = stream->silent;
+ stream->silent = T; /* note this stream is dying */
+ if (options & CL_EXPUNGE) mx_expunge (stream,NIL,NIL);
+ /* free local scratch buffer */
+ if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
+ /* nuke the local data */
+ fs_give ((void **) &stream->local);
+ stream->dtb = NIL; /* log out the DTB */
+ stream->silent = silent; /* reset silent state */
+ }
+}
+\f
+/* MX mail fetch fast information
+ * Accepts: MAIL stream
+ * sequence
+ * option flags
+ */
+
+void mx_fast (MAILSTREAM *stream,char *sequence,long flags)
+{
+ unsigned long i;
+ MESSAGECACHE *elt;
+ if (stream && LOCAL &&
+ ((flags & FT_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence)))
+ for (i = 1; i <= stream->nmsgs; i++)
+ if ((elt = mail_elt (stream,i))->sequence) mx_fast_work (stream,elt);
+}
+
+
+/* MX mail fetch fast information
+ * Accepts: MAIL stream
+ * message cache element
+ * Returns: name of message file
+ */
+
+char *mx_fast_work (MAILSTREAM *stream,MESSAGECACHE *elt)
+{
+ struct stat sbuf;
+ struct tm *tm;
+ /* build message file name */
+ sprintf (LOCAL->buf,"%s/%lu",stream->mailbox,elt->private.uid);
+ /* have size yet? */
+ if (!elt->rfc822_size && !stat (LOCAL->buf,&sbuf)) {
+ /* make plausible IMAPish date string */
+ tm = gmtime (&sbuf.st_mtime);
+ elt->day = tm->tm_mday; elt->month = tm->tm_mon + 1;
+ elt->year = tm->tm_year + 1900 - BASEYEAR;
+ elt->hours = tm->tm_hour; elt->minutes = tm->tm_min;
+ elt->seconds = tm->tm_sec;
+ elt->zhours = 0; elt->zminutes = 0; elt->zoccident = 0;
+ elt->rfc822_size = sbuf.st_size;
+ }
+ return (char *) LOCAL->buf; /* return file name */
+}
+\f
+/* MX mail fetch message header
+ * Accepts: MAIL stream
+ * message # to fetch
+ * pointer to returned header text length
+ * option flags
+ * Returns: message header in RFC822 format
+ */
+
+char *mx_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags)
+{
+ unsigned long i;
+ int fd;
+ MESSAGECACHE *elt;
+ *length = 0; /* default to empty */
+ if (flags & FT_UID) return "";/* UID call "impossible" */
+ elt = mail_elt (stream,msgno);/* get elt */
+ if (!elt->private.msg.header.text.data) {
+ /* purge cache if too big */
+ if (LOCAL->cachedtexts > max (stream->nmsgs * 4096,2097152)) {
+ mail_gc (stream,GC_TEXTS);/* just can't keep that much */
+ LOCAL->cachedtexts = 0;
+ }
+ if ((fd = open (mx_fast_work (stream,elt),O_RDONLY,NIL)) < 0) return "";
+ /* is buffer big enough? */
+ if (elt->rfc822_size > LOCAL->buflen) {
+ fs_give ((void **) &LOCAL->buf);
+ LOCAL->buf = (char *) fs_get ((LOCAL->buflen = elt->rfc822_size) + 1);
+ }
+ /* slurp message */
+ read (fd,LOCAL->buf,elt->rfc822_size);
+ /* tie off file */
+ LOCAL->buf[elt->rfc822_size] = '\0';
+ close (fd); /* flush message file */
+ /* find end of header */
+ if (elt->rfc822_size < 4) i = 0;
+ else for (i = 4; (i < elt->rfc822_size) &&
+ !((LOCAL->buf[i - 4] == '\015') &&
+ (LOCAL->buf[i - 3] == '\012') &&
+ (LOCAL->buf[i - 2] == '\015') &&
+ (LOCAL->buf[i - 1] == '\012')); i++);
+ /* copy header */
+ cpytxt (&elt->private.msg.header.text,LOCAL->buf,i);
+ cpytxt (&elt->private.msg.text.text,LOCAL->buf+i,elt->rfc822_size - i);
+ /* add to cached size */
+ LOCAL->cachedtexts += elt->rfc822_size;
+ }
+ *length = elt->private.msg.header.text.size;
+ return (char *) elt->private.msg.header.text.data;
+}
+\f
+/* MX mail fetch message text (body only)
+ * Accepts: MAIL stream
+ * message # to fetch
+ * pointer to returned stringstruct
+ * option flags
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
+{
+ unsigned long i;
+ MESSAGECACHE *elt;
+ /* UID call "impossible" */
+ if (flags & FT_UID) return NIL;
+ elt = mail_elt (stream,msgno);
+ /* snarf message if don't have it yet */
+ if (!elt->private.msg.text.text.data) {
+ mx_header (stream,msgno,&i,flags);
+ if (!elt->private.msg.text.text.data) return NIL;
+ }
+ /* mark as seen */
+ if (!(flags & FT_PEEK) && mx_lockindex (stream)) {
+ elt->seen = T;
+ mx_unlockindex (stream);
+ MM_FLAGS (stream,msgno);
+ }
+ INIT (bs,mail_string,elt->private.msg.text.text.data,
+ elt->private.msg.text.text.size);
+ return T;
+}
+\f
+/* MX mail modify flags
+ * Accepts: MAIL stream
+ * sequence
+ * flag(s)
+ * option flags
+ */
+
+void mx_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
+{
+ mx_unlockindex (stream); /* finished with index */
+}
+
+
+/* MX per-message modify flags
+ * Accepts: MAIL stream
+ * message cache element
+ */
+
+void mx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt)
+{
+ mx_lockindex (stream); /* lock index if not already locked */
+}
+\f
+/* MX mail ping mailbox
+ * Accepts: MAIL stream
+ * Returns: T if stream alive, else NIL
+ */
+
+long mx_ping (MAILSTREAM *stream)
+{
+ MAILSTREAM *sysibx = NIL;
+ MESSAGECACHE *elt,*selt;
+ struct stat sbuf;
+ char *s,tmp[MAILTMPLEN];
+ int fd;
+ unsigned long i,j,r,old;
+ long nmsgs = stream->nmsgs;
+ long recent = stream->recent;
+ int silent = stream->silent;
+ if (stat (stream->mailbox,&sbuf)) return NIL;
+ stream->silent = T; /* don't pass up exists events yet */
+ if (sbuf.st_ctime != LOCAL->scantime) {
+ struct direct **names = NIL;
+ long nfiles = scandir (stream->mailbox,&names,mx_select,mx_numsort);
+ if (nfiles < 0) nfiles = 0; /* in case error */
+ old = stream->uid_last;
+ /* note scanned now */
+ LOCAL->scantime = sbuf.st_ctime;
+ /* scan directory */
+ for (i = 0; i < nfiles; ++i) {
+ /* if newly seen, add to list */
+ if ((j = atoi (names[i]->d_name)) > old) {
+ /* swell the cache */
+ mail_exists (stream,++nmsgs);
+ stream->uid_last = (elt = mail_elt (stream,nmsgs))->private.uid = j;
+ elt->valid = T; /* note valid flags */
+ if (old) { /* other than the first pass? */
+ elt->recent = T; /* yup, mark as recent */
+ recent++; /* bump recent count */
+ }
+ }
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory */
+ if (s = (void *) names) fs_give ((void **) &s);
+ }
+ stream->nmsgs = nmsgs; /* don't upset mail_uid() */
+\f
+ /* if INBOX, snarf from system INBOX */
+ if (mx_lockindex (stream) && stream->inbox &&
+ !strcmp (sysinbox (),stream->mailbox)) {
+ old = stream->uid_last;
+ MM_CRITICAL (stream); /* go critical */
+ /* see if anything in system inbox */
+ if (!stat (sysinbox (),&sbuf) && sbuf.st_size &&
+ (sysibx = mail_open (sysibx,sysinbox (),OP_SILENT)) &&
+ !sysibx->rdonly && (r = sysibx->nmsgs)) {
+ for (i = 1; i <= r; ++i) {/* for each message in sysinbox mailbox */
+ /* build file name we will use */
+ sprintf (LOCAL->buf,"%s/%lu",stream->mailbox,++old);
+ /* snarf message from Berkeley mailbox */
+ selt = mail_elt (sysibx,i);
+ if (((fd = open (LOCAL->buf,O_WRONLY|O_CREAT|O_EXCL,
+ (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL)))
+ >= 0) &&
+ (s = mail_fetchheader_full (sysibx,i,NIL,&j,FT_PEEK)) &&
+ (write (fd,s,j) == j) &&
+ (s = mail_fetchtext_full (sysibx,i,&j,FT_PEEK)) &&
+ (write (fd,s,j) == j) && !fsync (fd) && !close (fd)) {
+ /* swell the cache */
+ mail_exists (stream,++nmsgs);
+ stream->uid_last = /* create new elt, note its file number */
+ (elt = mail_elt (stream,nmsgs))->private.uid = old;
+ recent++; /* bump recent count */
+ /* set up initial flags and date */
+ elt->valid = elt->recent = T;
+ elt->seen = selt->seen;
+ elt->deleted = selt->deleted;
+ elt->flagged = selt->flagged;
+ elt->answered = selt->answered;
+ elt->draft = selt->draft;
+ elt->day = selt->day;elt->month = selt->month;elt->year = selt->year;
+ elt->hours = selt->hours;elt->minutes = selt->minutes;
+ elt->seconds = selt->seconds;
+ elt->zhours = selt->zhours; elt->zminutes = selt->zminutes;
+ elt->zoccident = selt->zoccident;
+ mx_setdate (LOCAL->buf,elt);
+ sprintf (tmp,"%lu",i);/* delete it from the sysinbox */
+ mail_flag (sysibx,tmp,"\\Deleted",ST_SET);
+ }
+ else { /* failed to snarf */
+ if (fd) { /* did it ever get opened? */
+ close (fd); /* close descriptor */
+ unlink (LOCAL->buf);/* flush this file */
+ }
+ sprintf (tmp,"Message copy to MX mailbox failed: %.80s",
+ s,strerror (errno));
+ MM_LOG (tmp,ERROR);
+ r = 0; /* stop the snarf in its tracks */
+ }
+ }
+ /* update scan time */
+ if (!stat (stream->mailbox,&sbuf)) LOCAL->scantime = sbuf.st_ctime;
+ mail_expunge (sysibx); /* now expunge all those messages */
+ }
+ if (sysibx) mail_close (sysibx);
+ MM_NOCRITICAL (stream); /* release critical */
+ }
+ mx_unlockindex (stream); /* done with index */
+ stream->silent = silent; /* can pass up events now */
+ mail_exists (stream,nmsgs); /* notify upper level of mailbox size */
+ mail_recent (stream,recent);
+ return T; /* return that we are alive */
+}
+\f
+/* MX mail check mailbox
+ * Accepts: MAIL stream
+ */
+
+void mx_check (MAILSTREAM *stream)
+{
+ if (mx_ping (stream)) MM_LOG ("Check completed",(long) NIL);
+}
+
+
+/* MX mail expunge mailbox
+ * Accepts: MAIL stream
+ * sequence to expunge if non-NIL
+ * expunge options
+ * Returns: T, always
+ */
+
+long mx_expunge (MAILSTREAM *stream,char *sequence,long options)
+{
+ long ret;
+ MESSAGECACHE *elt;
+ unsigned long i = 1;
+ unsigned long n = 0;
+ unsigned long recent = stream->recent;
+ if (ret = (sequence ? ((options & EX_UID) ?
+ mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence)) : LONGT) &&
+ mx_lockindex (stream)) { /* lock the index */
+ MM_CRITICAL (stream); /* go critical */
+ while (i <= stream->nmsgs) {/* for each message */
+ elt = mail_elt (stream,i);/* if deleted, need to trash it */
+ if (elt->deleted && (sequence ? elt->sequence : T)) {
+ sprintf (LOCAL->buf,"%s/%lu",stream->mailbox,elt->private.uid);
+ if (unlink (LOCAL->buf)) {/* try to delete the message */
+ sprintf (LOCAL->buf,"Expunge of message %lu failed, aborted: %s",i,
+ strerror (errno));
+ MM_LOG (LOCAL->buf,(long) NIL);
+ break;
+ }
+ /* note uncached */
+ LOCAL->cachedtexts -= ((elt->private.msg.header.text.data ?
+ elt->private.msg.header.text.size : 0) +
+ (elt->private.msg.text.text.data ?
+ elt->private.msg.text.text.size : 0));
+ mail_gc_msg (&elt->private.msg,GC_ENV | GC_TEXTS);
+ if(elt->recent)--recent;/* if recent, note one less recent message */
+ mail_expunged(stream,i);/* notify upper levels */
+ n++; /* count up one more expunged message */
+ }
+ else i++; /* otherwise try next message */
+ }
+ if (n) { /* output the news if any expunged */
+ sprintf (LOCAL->buf,"Expunged %lu messages",n);
+ MM_LOG (LOCAL->buf,(long) NIL);
+ }
+ else MM_LOG ("No messages deleted, so no update needed",(long) NIL);
+ MM_NOCRITICAL (stream); /* release critical */
+ mx_unlockindex (stream); /* finished with index */
+ /* notify upper level of new mailbox size */
+ mail_exists (stream,stream->nmsgs);
+ mail_recent (stream,recent);
+ }
+ return ret;
+}
+\f
+/* MX mail copy message(s)
+ * Accepts: MAIL stream
+ * sequence
+ * destination mailbox
+ * copy options
+ * Returns: T if copy successful, else NIL
+ */
+
+long mx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+{
+ FDDATA d;
+ STRING st;
+ MESSAGECACHE *elt;
+ MAILSTREAM *astream;
+ struct stat sbuf;
+ int fd;
+ unsigned long i,j,uid,uidv;
+ char *t,tmp[MAILTMPLEN];
+ long ret;
+ mailproxycopy_t pc =
+ (mailproxycopy_t) mail_parameters (stream,GET_MAILPROXYCOPY,NIL);
+ /* make sure valid mailbox */
+ if (!mx_valid (mailbox)) switch (errno) {
+ case NIL: /* no error in stat() */
+ if (pc) return (*pc) (stream,sequence,mailbox,options);
+ sprintf (LOCAL->buf,"Not a MX-format mailbox: %.80s",mailbox);
+ MM_LOG (LOCAL->buf,ERROR);
+ return NIL;
+ default: /* some stat() error */
+ MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before copy",NIL);
+ return NIL;
+ }
+ /* copy the messages */
+ if (!(ret = ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence))));
+ /* acquire stream to append to */
+ else if (!(astream = mail_open (NIL,mailbox,OP_SILENT))) {
+ MM_LOG ("Can't open copy mailbox",ERROR);
+ ret = NIL;
+ }
+ else {
+ MM_CRITICAL (stream); /* go critical */
+ if (!(ret = mx_lockindex (astream)))
+ MM_LOG ("Message copy failed: unable to lock index",ERROR);
+ else {
+\f
+ copyuid_t cu = (copyuid_t) mail_parameters (NIL,GET_COPYUID,NIL);
+ SEARCHSET *source = cu ? mail_newsearchset () : NIL;
+ SEARCHSET *dest = cu ? mail_newsearchset () : NIL;
+ for (i = 1,uid = uidv = 0; ret && (i <= stream->nmsgs); i++)
+ if ((elt = mail_elt (stream,i))->sequence) {
+ if (ret = ((fd = open (mx_fast_work (stream,elt),O_RDONLY,NIL))
+ >= 0)) {
+ fstat (fd,&sbuf); /* get size of message */
+ d.fd = fd; /* set up file descriptor */
+ d.pos = 0; /* start of file */
+ d.chunk = LOCAL->buf;
+ d.chunksize = CHUNKSIZE;
+ INIT (&st,fd_string,&d,sbuf.st_size);
+ /* init flag string */
+ tmp[0] = tmp[1] = '\0';
+ if (j = elt->user_flags) do
+ if (t = stream->user_flags[find_rightmost_bit (&j)])
+ strcat (strcat (tmp," "),t);
+ while (j);
+ if (elt->seen) strcat (tmp," \\Seen");
+ if (elt->deleted) strcat (tmp," \\Deleted");
+ if (elt->flagged) strcat (tmp," \\Flagged");
+ if (elt->answered) strcat (tmp," \\Answered");
+ if (elt->draft) strcat (tmp," \\Draft");
+ tmp[0] = '('; /* open list */
+ strcat (tmp,")"); /* close list */
+ if (ret = mx_append_msg (astream,tmp,elt,&st,dest)) {
+ /* add to source set if needed */
+ if (source) mail_append_set (source,mail_uid (stream,i));
+ /* delete if doing a move */
+ if (options & CP_MOVE) elt->deleted = T;
+ }
+ }
+ }
+ /* return sets if doing COPYUID */
+ if (cu && ret) (*cu) (stream,mailbox,astream->uid_validity,source,dest);
+ else { /* flush any sets we may have built */
+ mail_free_searchset (&source);
+ mail_free_searchset (&dest);
+ }
+ mx_unlockindex (astream); /* unlock index */
+ }
+ MM_NOCRITICAL (stream);
+ mail_close (astream); /* finished with append stream */
+ }
+ return ret; /* return success */
+}
+\f
+/* MX mail append message from stringstruct
+ * Accepts: MAIL stream
+ * destination mailbox
+ * append callback
+ * data for callback
+ * Returns: T if append successful, else NIL
+ */
+
+long mx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+{
+ MESSAGECACHE elt;
+ MAILSTREAM *astream;
+ char *flags,*date,tmp[MAILTMPLEN];
+ STRING *message;
+ long ret = LONGT;
+ /* default stream to prototype */
+ if (!stream) stream = user_flags (&mxproto);
+ /* N.B.: can't use LOCAL->buf for tmp */
+ /* make sure valid mailbox */
+ if (!mx_isvalid (mailbox,tmp)) switch (errno) {
+ case ENOENT: /* no such file? */
+ if (!compare_cstring (mailbox,"INBOX")) mx_create (NIL,"INBOX");
+ else {
+ MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before append",NIL);
+ return NIL;
+ }
+ /* falls through */
+ case 0: /* merely empty file? */
+ break;
+ case EINVAL:
+ sprintf (tmp,"Invalid MX-format mailbox name: %.80s",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ default:
+ sprintf (tmp,"Not a MX-format mailbox: %.80s",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+\f
+ /* get first message */
+ if (!MM_APPEND (af) (stream,data,&flags,&date,&message)) return NIL;
+ if (!(astream = mail_open (NIL,mailbox,OP_SILENT))) {
+ MM_LOG ("Can't open append mailbox",ERROR);
+ return NIL;
+ }
+ MM_CRITICAL (astream); /* go critical */
+ /* lock the index */
+ if (!(ret = mx_lockindex (astream)))
+ MM_LOG ("Message append failed: unable to lock index",ERROR);
+ else {
+ appenduid_t au = (appenduid_t) mail_parameters (NIL,GET_APPENDUID,NIL);
+ SEARCHSET *dst = au ? mail_newsearchset () : NIL;
+ do {
+ /* guard against zero-length */
+ if (!(ret = SIZE (message)))
+ MM_LOG ("Append of zero-length message",ERROR);
+ else if (date && !(ret = mail_parse_date (&elt,date))) {
+ sprintf (tmp,"Bad date in append: %.80s",date);
+ MM_LOG (tmp,ERROR);
+ }
+ else ret = mx_append_msg (astream,flags,date ? &elt : NIL,message,dst)&&
+ MM_APPEND (af) (stream,data,&flags,&date,&message);
+ } while (ret && message);
+ /* return sets if doing APPENDUID */
+ if (au && ret) (*au) (mailbox,astream->uid_validity,dst);
+ else mail_free_searchset (&dst);
+ mx_unlockindex (astream); /* unlock index */
+ }
+ MM_NOCRITICAL (astream); /* release critical */
+ mail_close (astream);
+ return ret;
+}
+\f
+/* MX mail append single message
+ * Accepts: MAIL stream
+ * flags for new message if non-NIL
+ * elt with source date if non-NIL
+ * stringstruct of message text
+ * searchset to place UID
+ * Returns: T if success, NIL if failure
+ */
+
+long mx_append_msg (MAILSTREAM *stream,char *flags,MESSAGECACHE *elt,
+ STRING *st,SEARCHSET *set)
+{
+ char tmp[MAILTMPLEN];
+ int fd;
+ unsigned long uf;
+ long f = mail_parse_flags (stream,flags,&uf);
+ /* make message file name */
+ sprintf (tmp,"%s/%lu",stream->mailbox,++stream->uid_last);
+ if ((fd = open (tmp,O_WRONLY|O_CREAT|O_EXCL,
+ (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL))) < 0) {
+ sprintf (tmp,"Can't create append message: %s",strerror (errno));
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ while (SIZE (st)) { /* copy the file */
+ if (st->cursize && (write (fd,st->curpos,st->cursize) < 0)) {
+ unlink (tmp); /* delete file */
+ close (fd); /* close the file */
+ sprintf (tmp,"Message append failed: %s",strerror (errno));
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ SETPOS (st,GETPOS (st) + st->cursize);
+ }
+ close (fd); /* close the file */
+ if (elt) mx_setdate (tmp,elt);/* set file date */
+ /* swell the cache */
+ mail_exists (stream,++stream->nmsgs);
+ /* copy flags */
+ mail_append_set (set,(elt = mail_elt (stream,stream->nmsgs))->private.uid =
+ stream->uid_last);
+ if (f&fSEEN) elt->seen = T;
+ if (f&fDELETED) elt->deleted = T;
+ if (f&fFLAGGED) elt->flagged = T;
+ if (f&fANSWERED) elt->answered = T;
+ if (f&fDRAFT) elt->draft = T;
+ elt->user_flags |= uf;
+ return LONGT;
+}
+\f
+/* Internal routines */
+
+
+/* MX file name selection test
+ * Accepts: candidate directory entry
+ * Returns: T to use file name, NIL to skip it
+ */
+
+int mx_select (struct direct *name)
+{
+ char c;
+ char *s = name->d_name;
+ while (c = *s++) if (!isdigit (c)) return NIL;
+ return T;
+}
+
+
+/* MX file name comparision
+ * Accepts: first candidate directory entry
+ * second candidate directory entry
+ * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+ */
+
+int mx_numsort (const void *d1,const void *d2)
+{
+ return atoi ((*(struct direct **) d1)->d_name) -
+ atoi ((*(struct direct **) d2)->d_name);
+}
+
+
+/* MX mail build file name
+ * Accepts: destination string
+ * source
+ * Returns: destination
+ */
+
+char *mx_file (char *dst,char *name)
+{
+ char *s;
+ /* empty string if mailboxfile fails */
+ if (!mailboxfile (dst,name)) *dst = '\0';
+ /* driver-selected INBOX */
+ else if (!*dst) mailboxfile (dst,"~/INBOX");
+ /* tie off unnecessary trailing / */
+ else if ((s = strrchr (dst,'/')) && !s[1]) *s = '\0';
+ return dst;
+}
+\f
+/* MX read and lock index
+ * Accepts: MAIL stream
+ * Returns: T if success, NIL if failure
+ */
+
+long mx_lockindex (MAILSTREAM *stream)
+{
+ unsigned long uf,sf,uid;
+ int k = 0;
+ unsigned long msgno = 1;
+ struct stat sbuf;
+ char *s,*t,*idx,tmp[2*MAILTMPLEN];
+ MESSAGECACHE *elt;
+ blocknotify_t bn = (blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
+ if ((LOCAL->fd < 0) && /* get index file, no-op if already have it */
+ (LOCAL->fd = open (strcat (strcpy (tmp,stream->mailbox),MXINDEXNAME),
+ O_RDWR|O_CREAT,
+ (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL)))
+ >= 0) {
+ (*bn) (BLOCK_FILELOCK,NIL);
+ flock (LOCAL->fd,LOCK_EX); /* get exclusive lock */
+ (*bn) (BLOCK_NONE,NIL);
+ fstat (LOCAL->fd,&sbuf); /* get size of index */
+ /* slurp index */
+ read (LOCAL->fd,s = idx = (char *) fs_get (sbuf.st_size + 1),sbuf.st_size);
+ idx[sbuf.st_size] = '\0'; /* tie off index */
+ /* parse index */
+ if (sbuf.st_size) while (s && *s) switch (*s) {
+ case 'V': /* UID validity record */
+ stream->uid_validity = strtoul (s+1,&s,16);
+ break;
+ case 'L': /* UID last record */
+ stream->uid_last = strtoul (s+1,&s,16);
+ break;
+ case 'K': /* keyword */
+ /* find end of keyword */
+ if (s = strchr (t = ++s,'\n')) {
+ *s++ = '\0'; /* tie off keyword */
+ /* copy keyword */
+ if ((k < NUSERFLAGS) && !stream->user_flags[k] &&
+ (strlen (t) <= MAXUSERFLAG)) stream->user_flags[k] = cpystr (t);
+ k++; /* one more keyword */
+ }
+ break;
+\f
+ case 'M': /* message status record */
+ uid = strtoul (s+1,&s,16);/* get UID for this message */
+ if (*s == ';') { /* get user flags */
+ uf = strtoul (s+1,&s,16);
+ if (*s == '.') { /* get system flags */
+ sf = strtoul (s+1,&s,16);
+ while ((msgno <= stream->nmsgs) && (mail_uid (stream,msgno) < uid))
+ msgno++; /* find message number for this UID */
+ if ((msgno <= stream->nmsgs) && (mail_uid (stream,msgno) == uid)) {
+ (elt = mail_elt (stream,msgno))->valid = T;
+ elt->user_flags=uf; /* set user and system flags in elt */
+ if (sf & fSEEN) elt->seen = T;
+ if (sf & fDELETED) elt->deleted = T;
+ if (sf & fFLAGGED) elt->flagged = T;
+ if (sf & fANSWERED) elt->answered = T;
+ if (sf & fDRAFT) elt->draft = T;
+ }
+ break;
+ }
+ }
+ default: /* bad news */
+ sprintf (tmp,"Error in index: %.80s",s);
+ MM_LOG (tmp,ERROR);
+ *s = NIL; /* ignore remainder of index */
+ }
+ else { /* new index */
+ stream->uid_validity = time (0);
+ user_flags (stream); /* init stream with default user flags */
+ }
+ fs_give ((void **) &idx); /* flush index */
+ }
+ return (LOCAL->fd >= 0) ? T : NIL;
+}
+\f
+/* MX write and unlock index
+ * Accepts: MAIL stream
+ */
+
+#define MXIXBUFLEN 2048
+
+void mx_unlockindex (MAILSTREAM *stream)
+{
+ unsigned long i,j;
+ off_t size = 0;
+ char *s,tmp[MXIXBUFLEN + 64];
+ MESSAGECACHE *elt;
+ if (LOCAL->fd >= 0) {
+ lseek (LOCAL->fd,0,L_SET); /* rewind file */
+ /* write header */
+ sprintf (s = tmp,"V%08lxL%08lx",stream->uid_validity,stream->uid_last);
+ for (i = 0; (i < NUSERFLAGS) && stream->user_flags[i]; ++i)
+ sprintf (s += strlen (s),"K%s\n",stream->user_flags[i]);
+ /* write messages */
+ for (i = 1; i <= stream->nmsgs; i++) {
+ /* filled buffer? */
+ if (((s += strlen (s)) - tmp) > MXIXBUFLEN) {
+ write (LOCAL->fd,tmp,j = s - tmp);
+ size += j;
+ *(s = tmp) = '\0'; /* dump out and restart buffer */
+ }
+ elt = mail_elt (stream,i);
+ sprintf(s,"M%08lx;%08lx.%04x",elt->private.uid,elt->user_flags,(unsigned)
+ ((fSEEN * elt->seen) + (fDELETED * elt->deleted) +
+ (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered) +
+ (fDRAFT * elt->draft)));
+ }
+ /* write tail end of buffer */
+ if ((s += strlen (s)) != tmp) {
+ write (LOCAL->fd,tmp,j = s - tmp);
+ size += j;
+ }
+ ftruncate (LOCAL->fd,size);
+ flock (LOCAL->fd,LOCK_UN); /* unlock the index */
+ close (LOCAL->fd); /* finished with file */
+ LOCAL->fd = -1; /* no index now */
+ }
+}
+\f
+/* Set date for message
+ * Accepts: file name
+ * elt containing date
+ */
+
+void mx_setdate (char *file,MESSAGECACHE *elt)
+{
+ time_t tp[2];
+ tp[0] = time (0); /* atime is now */
+ tp[1] = mail_longdate (elt); /* modification time */
+ utime (file,tp); /* set the times */
+}
--- /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: MX mail routines
+ *
+ * Author(s): Mark Crispin
+ * Networks and Distributed Computing
+ * Computing & Communications
+ * University of Washington
+ * Administration Building, AG-44
+ * Seattle, WA 98195
+ * Internet: MRC@CAC.Washington.EDU
+ *
+ * Date: 3 May 1996
+ * Last Edited: 6 January 2008
+ */
+
+
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+extern int errno; /* just in case */
+#include "mail.h"
+#include "osdep.h"
+#include <pwd.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include "misc.h"
+#include "dummy.h"
+#include "fdstring.h"
+\f
+/* Index file */
+
+#define MXINDEXNAME "/.mxindex"
+#define MXINDEX(d,s) strcat (mx_file (d,s),MXINDEXNAME)
+
+
+/* MX I/O stream local data */
+
+typedef struct mx_local {
+ int fd; /* file descriptor of open index */
+ unsigned char *buf; /* temporary buffer */
+ unsigned long buflen; /* current size of temporary buffer */
+ unsigned long cachedtexts; /* total size of all cached texts */
+ time_t scantime; /* last time directory scanned */
+} MXLOCAL;
+
+
+/* Convenient access to local data */
+
+#define LOCAL ((MXLOCAL *) stream->local)
+
+
+/* Function prototypes */
+
+DRIVER *mx_valid (char *name);
+int mx_isvalid (char *name,char *tmp);
+int mx_namevalid (char *name);
+void *mx_parameters (long function,void *value);
+long mx_dirfmttest (char *name);
+void mx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+long mx_scan_contents (char *name,char *contents,unsigned long csiz,
+ unsigned long fsiz);
+void mx_list (MAILSTREAM *stream,char *ref,char *pat);
+void mx_lsub (MAILSTREAM *stream,char *ref,char *pat);
+long mx_subscribe (MAILSTREAM *stream,char *mailbox);
+long mx_unsubscribe (MAILSTREAM *stream,char *mailbox);
+long mx_create (MAILSTREAM *stream,char *mailbox);
+long mx_delete (MAILSTREAM *stream,char *mailbox);
+long mx_rename (MAILSTREAM *stream,char *old,char *newname);
+int mx_rename_work (char *src,size_t srcl,char *dst,size_t dstl,char *name);
+MAILSTREAM *mx_open (MAILSTREAM *stream);
+void mx_close (MAILSTREAM *stream,long options);
+void mx_fast (MAILSTREAM *stream,char *sequence,long flags);
+char *mx_fast_work (MAILSTREAM *stream,MESSAGECACHE *elt);
+char *mx_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags);
+long mx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
+void mx_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags);
+void mx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt);
+long mx_ping (MAILSTREAM *stream);
+void mx_check (MAILSTREAM *stream);
+long mx_expunge (MAILSTREAM *stream,char *sequence,long options);
+long mx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
+ long options);
+long mx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+long mx_append_msg (MAILSTREAM *stream,char *flags,MESSAGECACHE *elt,
+ STRING *st,SEARCHSET *set);
+
+int mx_select (struct direct *name);
+int mx_numsort (const void *d1,const void *d2);
+char *mx_file (char *dst,char *name);
+long mx_lockindex (MAILSTREAM *stream);
+void mx_unlockindex (MAILSTREAM *stream);
+void mx_setdate (char *file,MESSAGECACHE *elt);
+
+\f
+/* MX mail routines */
+
+
+/* Driver dispatch used by MAIL */
+
+DRIVER mxdriver = {
+ "mx", /* driver name */
+ /* driver flags */
+ DR_MAIL|DR_LOCAL|DR_NOFAST|DR_CRLF|DR_LOCKING|DR_DIRFMT,
+ (DRIVER *) NIL, /* next driver */
+ mx_valid, /* mailbox is valid for us */
+ mx_parameters, /* manipulate parameters */
+ mx_scan, /* scan mailboxes */
+ mx_list, /* find mailboxes */
+ mx_lsub, /* find subscribed mailboxes */
+ mx_subscribe, /* subscribe to mailbox */
+ mx_unsubscribe, /* unsubscribe from mailbox */
+ mx_create, /* create mailbox */
+ mx_delete, /* delete mailbox */
+ mx_rename, /* rename mailbox */
+ mail_status_default, /* status of mailbox */
+ mx_open, /* open mailbox */
+ mx_close, /* close mailbox */
+ mx_fast, /* fetch message "fast" attributes */
+ NIL, /* fetch message flags */
+ NIL, /* fetch overview */
+ NIL, /* fetch message envelopes */
+ mx_header, /* fetch message header only */
+ mx_text, /* fetch message body only */
+ NIL, /* fetch partial message test */
+ NIL, /* unique identifier */
+ NIL, /* message number */
+ mx_flag, /* modify flags */
+ mx_flagmsg, /* per-message modify flags */
+ NIL, /* search for message based on criteria */
+ NIL, /* sort messages */
+ NIL, /* thread messages */
+ mx_ping, /* ping mailbox to see if still alive */
+ mx_check, /* check for new messages */
+ mx_expunge, /* expunge deleted messages */
+ mx_copy, /* copy messages to another mailbox */
+ mx_append, /* append string message to mailbox */
+ NIL /* garbage collect stream */
+};
+
+ /* prototype stream */
+MAILSTREAM mxproto = {&mxdriver};
+\f
+/* MX mail validate mailbox
+ * Accepts: mailbox name
+ * Returns: our driver if name is valid, NIL otherwise
+ */
+
+DRIVER *mx_valid (char *name)
+{
+ char tmp[MAILTMPLEN];
+ return mx_isvalid (name,tmp) ? &mxdriver : NIL;
+}
+
+
+/* MX mail test for valid mailbox
+ * Accepts: mailbox name
+ * temporary buffer to use
+ * Returns: T if valid, NIL otherwise with errno holding dir stat error
+ */
+
+int mx_isvalid (char *name,char *tmp)
+{
+ struct stat sbuf;
+ errno = NIL; /* zap error */
+ if ((strlen (name) <= NETMAXMBX) && *mx_file (tmp,name) &&
+ !stat (tmp,&sbuf) && ((sbuf.st_mode & S_IFMT) == S_IFDIR)) {
+ /* name is directory; is it mx? */
+ if (!stat (MXINDEX (tmp,name),&sbuf) &&
+ ((sbuf.st_mode & S_IFMT) == S_IFREG)) return T;
+ errno = NIL; /* directory but not mx */
+ }
+ else if (!compare_cstring (name,"INBOX")) errno = NIL;
+ return NIL;
+}
+
+
+/* MX mail test for valid mailbox
+ * Accepts: mailbox name
+ * Returns: T if valid, NIL otherwise
+ */
+
+int mx_namevalid (char *name)
+{
+ char *s = (*name == '/') ? name + 1 : name;
+ while (s && *s) { /* make sure valid name */
+ if (isdigit (*s)) s++; /* digit, check this node further... */
+ else if (*s == '/') break; /* all digit node, barf */
+ /* non-digit, skip to next node or return */
+ else if (!((s = strchr (s+1,'/')) && *++s)) return T;
+ }
+ return NIL; /* all numeric or empty node */
+}
+\f
+/* MX manipulate driver parameters
+ * Accepts: function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *mx_parameters (long function,void *value)
+{
+ void *ret = NIL;
+ switch ((int) function) {
+ case GET_INBOXPATH:
+ if (value) ret = mailboxfile ((char *) value,"~/INBOX");
+ break;
+ case GET_DIRFMTTEST:
+ ret = (void *) mx_dirfmttest;
+ break;
+ case GET_SCANCONTENTS:
+ ret = (void *) mx_scan_contents;
+ break;
+ }
+ return ret;
+}
+
+
+/* MX test for directory format internal node
+ * Accepts: candidate node name
+ * Returns: T if internal name, NIL otherwise
+ */
+
+long mx_dirfmttest (char *name)
+{
+ int c;
+ /* success if index name or all-numberic */
+ if (strcmp (name,MXINDEXNAME+1))
+ while (c = *name++) if (!isdigit (c)) return NIL;
+ return LONGT;
+}
+\f
+/* MX scan mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ * string to scan
+ */
+
+void mx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
+{
+ if (stream) dummy_scan (NIL,ref,pat,contents);
+}
+
+
+/* MX scan mailbox for contents
+ * Accepts: mailbox name
+ * desired contents
+ * contents size
+ * file size (ignored)
+ * Returns: NIL if contents not found, T if found
+ */
+
+long mx_scan_contents (char *name,char *contents,unsigned long csiz,
+ unsigned long fsiz)
+{
+ long i,nfiles;
+ void *a;
+ char *s;
+ long ret = NIL;
+ size_t namelen = strlen (name);
+ struct stat sbuf;
+ struct direct **names = NIL;
+ if ((nfiles = scandir (name,&names,mx_select,mx_numsort)) > 0)
+ for (i = 0; i < nfiles; ++i) {
+ if (!ret) {
+ sprintf (s = (char *) fs_get (namelen + strlen (names[i]->d_name) + 2),
+ "%s/%s",name,names[i]->d_name);
+ if (!stat (s,&sbuf) && (csiz <= sbuf.st_size))
+ ret = dummy_scan_contents (s,contents,csiz,sbuf.st_size);
+ fs_give ((void **) &s);
+ }
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory list */
+ if (a = (void *) names) fs_give ((void **) &a);
+ return ret;
+}
+\f
+/* MX list mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mx_list (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_list (NIL,ref,pat);
+}
+
+
+/* MX list subscribed mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mx_lsub (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_lsub (NIL,ref,pat);
+}
+\f
+/* MX mail subscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to add to subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_subscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_subscribe (mailbox);
+}
+
+
+/* MX mail unsubscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to delete from subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_unsubscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_unsubscribe (mailbox);
+}
+\f
+/* MX mail create mailbox
+ * Accepts: mail stream
+ * mailbox name to create
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_create (MAILSTREAM *stream,char *mailbox)
+{
+ DRIVER *test;
+ int fd;
+ char *s,tmp[MAILTMPLEN];
+ int mask = umask (0);
+ long ret = NIL;
+ if (!mx_namevalid (mailbox)) /* validate name */
+ sprintf (tmp,"Can't create mailbox %.80s: invalid MX-format name",mailbox);
+ /* must not already exist */
+ else if ((test = mail_valid (NIL,mailbox,NIL)) &&
+ strcmp (test->name,"dummy"))
+ sprintf (tmp,"Can't create mailbox %.80s: mailbox already exists",mailbox);
+ /* create directory */
+ else if (!dummy_create_path (stream,MXINDEX (tmp,mailbox),
+ get_dir_protection (mailbox)))
+ sprintf (tmp,"Can't create mailbox %.80s: %s",mailbox,strerror (errno));
+ else { /* success */
+ /* set index protection */
+ set_mbx_protections (mailbox,tmp);
+ /* tie off directory name */
+ *(s = strrchr (tmp,'/') + 1) = '\0';
+ /* set directory protection */
+ set_mbx_protections (mailbox,tmp);
+ ret = LONGT;
+ }
+ umask (mask); /* restore mask */
+ if (!ret) MM_LOG (tmp,ERROR); /* some error */
+ return ret;
+}
+\f
+/* MX mail delete mailbox
+ * mailbox name to delete
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_delete (MAILSTREAM *stream,char *mailbox)
+{
+ DIR *dirp;
+ struct direct *d;
+ char *s;
+ char tmp[MAILTMPLEN];
+ if (!mx_isvalid (mailbox,tmp))
+ sprintf (tmp,"Can't delete mailbox %.80s: no such mailbox",mailbox);
+ /* delete index */
+ else if (unlink (MXINDEX (tmp,mailbox)))
+ sprintf (tmp,"Can't delete mailbox %.80s index: %s",
+ mailbox,strerror (errno));
+ else { /* get directory name */
+ *(s = strrchr (tmp,'/')) = '\0';
+ if (dirp = opendir (tmp)) { /* open directory */
+ *s++ = '/'; /* restore delimiter */
+ /* massacre messages */
+ while (d = readdir (dirp)) if (mx_select (d)) {
+ strcpy (s,d->d_name); /* make path */
+ unlink (tmp); /* sayonara */
+ }
+ closedir (dirp); /* flush directory */
+ *(s = strrchr (tmp,'/')) = '\0';
+ if (rmdir (tmp)) { /* try to remove the directory */
+ sprintf (tmp,"Can't delete name %.80s: %s",mailbox,strerror (errno));
+ MM_LOG (tmp,WARN);
+ }
+ }
+ return T; /* always success */
+ }
+ MM_LOG (tmp,ERROR); /* something failed */
+ return NIL;
+}
+\f
+/* MX mail rename mailbox
+ * Accepts: MX mail stream
+ * old mailbox name
+ * new mailbox name
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_rename (MAILSTREAM *stream,char *old,char *newname)
+{
+ char c,*s,tmp[MAILTMPLEN],tmp1[MAILTMPLEN];
+ struct stat sbuf;
+ if (!mx_isvalid (old,tmp))
+ sprintf (tmp,"Can't rename mailbox %.80s: no such mailbox",old);
+ else if (!mx_namevalid (newname))
+ sprintf (tmp,"Can't rename to mailbox %.80s: invalid MX-format name",
+ newname);
+ /* new mailbox name must not be valid */
+ else if (mx_isvalid (newname,tmp))
+ sprintf (tmp,"Can't rename to mailbox %.80s: destination already exists",
+ newname);
+ else {
+ mx_file (tmp,old); /* build old directory name */
+ mx_file (tmp1,newname); /* and new directory name */
+ /* easy if not INBOX */
+ if (compare_cstring (old,"INBOX")) {
+ /* found superior to destination name? */
+ if (s = strrchr (mx_file (tmp1,newname),'/')) {
+ c = *++s; /* remember first character of inferior */
+ *s = '\0'; /* tie off to get just superior */
+ /* name doesn't exist, create it */
+ if ((stat (tmp1,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
+ !dummy_create_path (stream,tmp1,get_dir_protection (newname)))
+ return NIL;
+ *s = c; /* restore full name */
+ }
+ if (!rename (tmp,tmp1)) return LONGT;
+ }
+\f
+ /* RFC 3501 requires this */
+ else if (dummy_create_path (stream,strcat (tmp1,"/"),
+ get_dir_protection (newname))) {
+ void *a;
+ int i,n,lasterror;
+ struct direct **names = NIL;
+ size_t srcl = strlen (tmp);
+ size_t dstl = strlen (tmp1);
+ /* rename each mx file to new directory */
+ for (i = lasterror = 0,n = scandir (tmp,&names,mx_select,mx_numsort);
+ i < n; ++i) {
+ if (mx_rename_work (tmp,srcl,tmp1,dstl,names[i]->d_name))
+ lasterror = errno;
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory list */
+ if (a = (void *) names) fs_give ((void **) &a);
+ if (lasterror || mx_rename_work (tmp,srcl,tmp1,dstl,MXINDEXNAME+1))
+ errno = lasterror;
+ else return mx_create (NIL,"INBOX");
+ }
+ sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %s",
+ old,newname,strerror (errno));
+ }
+ MM_LOG (tmp,ERROR); /* something failed */
+ return NIL;
+}
+
+
+/* MX rename worker routine
+ * Accepts: source directory name
+ * source directory name length
+ * destination directory name
+ * destination directory name length
+ * name of node to move
+ * Returns: zero if success, non-zero if error
+ */
+
+int mx_rename_work (char *src,size_t srcl,char *dst,size_t dstl,char *name)
+{
+ int ret;
+ size_t len = strlen (name);
+ char *s = (char *) fs_get (srcl + len + 2);
+ char *d = (char *) fs_get (dstl + len + 1);
+ sprintf (s,"%s/%s",src,name);
+ sprintf (d,"%s%s",dst,name);
+ ret = rename (s,d);
+ fs_give ((void **) &s);
+ fs_give ((void **) &d);
+ return ret;
+}
+\f
+/* MX mail open
+ * Accepts: stream to open
+ * Returns: stream on success, NIL on failure
+ */
+
+MAILSTREAM *mx_open (MAILSTREAM *stream)
+{
+ char tmp[MAILTMPLEN];
+ /* return prototype for OP_PROTOTYPE call */
+ if (!stream) return user_flags (&mxproto);
+ if (stream->local) fatal ("mx recycle stream");
+ stream->local = fs_get (sizeof (MXLOCAL));
+ /* note if an INBOX or not */
+ stream->inbox = !compare_cstring (stream->mailbox,"INBOX");
+ mx_file (tmp,stream->mailbox);/* get directory name */
+ /* canonicalize mailbox name */
+ fs_give ((void **) &stream->mailbox);
+ stream->mailbox = cpystr (tmp);
+ /* make temporary buffer */
+ LOCAL->buf = (char *) fs_get (CHUNKSIZE);
+ LOCAL->buflen = CHUNKSIZE - 1;
+ LOCAL->scantime = 0; /* not scanned yet */
+ LOCAL->fd = -1; /* no index yet */
+ LOCAL->cachedtexts = 0; /* no cached texts */
+ stream->sequence++; /* bump sequence number */
+ /* parse mailbox */
+ stream->nmsgs = stream->recent = 0;
+ if (mx_ping (stream) && !(stream->nmsgs || stream->silent))
+ MM_LOG ("Mailbox is empty",(long) NIL);
+ stream->perm_seen = stream->perm_deleted = stream->perm_flagged =
+ stream->perm_answered = stream->perm_draft = stream->rdonly ? NIL : T;
+ stream->perm_user_flags = stream->rdonly ? NIL : 0xffffffff;
+ stream->kwd_create = (stream->user_flags[NUSERFLAGS-1] || stream->rdonly) ?
+ NIL : T; /* can we create new user flags? */
+ return stream; /* return stream to caller */
+}
+\f
+/* MX mail close
+ * Accepts: MAIL stream
+ * close options
+ */
+
+void mx_close (MAILSTREAM *stream,long options)
+{
+ if (LOCAL) { /* only if a file is open */
+ int silent = stream->silent;
+ stream->silent = T; /* note this stream is dying */
+ if (options & CL_EXPUNGE) mx_expunge (stream,NIL,NIL);
+ /* free local scratch buffer */
+ if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
+ /* nuke the local data */
+ fs_give ((void **) &stream->local);
+ stream->dtb = NIL; /* log out the DTB */
+ stream->silent = silent; /* reset silent state */
+ }
+}
+\f
+/* MX mail fetch fast information
+ * Accepts: MAIL stream
+ * sequence
+ * option flags
+ */
+
+void mx_fast (MAILSTREAM *stream,char *sequence,long flags)
+{
+ unsigned long i;
+ MESSAGECACHE *elt;
+ if (stream && LOCAL &&
+ ((flags & FT_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence)))
+ for (i = 1; i <= stream->nmsgs; i++)
+ if ((elt = mail_elt (stream,i))->sequence) mx_fast_work (stream,elt);
+}
+
+
+/* MX mail fetch fast information
+ * Accepts: MAIL stream
+ * message cache element
+ * Returns: name of message file
+ */
+
+char *mx_fast_work (MAILSTREAM *stream,MESSAGECACHE *elt)
+{
+ struct stat sbuf;
+ struct tm *tm;
+ /* build message file name */
+ sprintf (LOCAL->buf,"%s/%lu",stream->mailbox,elt->private.uid);
+ /* have size yet? */
+ if (!elt->rfc822_size && !stat (LOCAL->buf,&sbuf)) {
+ /* make plausible IMAPish date string */
+ tm = gmtime (&sbuf.st_mtime);
+ elt->day = tm->tm_mday; elt->month = tm->tm_mon + 1;
+ elt->year = tm->tm_year + 1900 - BASEYEAR;
+ elt->hours = tm->tm_hour; elt->minutes = tm->tm_min;
+ elt->seconds = tm->tm_sec;
+ elt->zhours = 0; elt->zminutes = 0; elt->zoccident = 0;
+ elt->rfc822_size = sbuf.st_size;
+ }
+ return (char *) LOCAL->buf; /* return file name */
+}
+\f
+/* MX mail fetch message header
+ * Accepts: MAIL stream
+ * message # to fetch
+ * pointer to returned header text length
+ * option flags
+ * Returns: message header in RFC822 format
+ */
+
+char *mx_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags)
+{
+ unsigned long i;
+ int fd;
+ MESSAGECACHE *elt;
+ *length = 0; /* default to empty */
+ if (flags & FT_UID) return "";/* UID call "impossible" */
+ elt = mail_elt (stream,msgno);/* get elt */
+ if (!elt->private.msg.header.text.data) {
+ /* purge cache if too big */
+ if (LOCAL->cachedtexts > max (stream->nmsgs * 4096,2097152)) {
+ mail_gc (stream,GC_TEXTS);/* just can't keep that much */
+ LOCAL->cachedtexts = 0;
+ }
+ if ((fd = open (mx_fast_work (stream,elt),O_RDONLY,NIL)) < 0) return "";
+ /* is buffer big enough? */
+ if (elt->rfc822_size > LOCAL->buflen) {
+ fs_give ((void **) &LOCAL->buf);
+ LOCAL->buf = (char *) fs_get ((LOCAL->buflen = elt->rfc822_size) + 1);
+ }
+ /* slurp message */
+ read (fd,LOCAL->buf,elt->rfc822_size);
+ /* tie off file */
+ LOCAL->buf[elt->rfc822_size] = '\0';
+ close (fd); /* flush message file */
+ /* find end of header */
+ if (elt->rfc822_size < 4) i = 0;
+ else for (i = 4; (i < elt->rfc822_size) &&
+ !((LOCAL->buf[i - 4] == '\015') &&
+ (LOCAL->buf[i - 3] == '\012') &&
+ (LOCAL->buf[i - 2] == '\015') &&
+ (LOCAL->buf[i - 1] == '\012')); i++);
+ /* copy header */
+ cpytxt (&elt->private.msg.header.text,LOCAL->buf,i);
+ cpytxt (&elt->private.msg.text.text,LOCAL->buf+i,elt->rfc822_size - i);
+ /* add to cached size */
+ LOCAL->cachedtexts += elt->rfc822_size;
+ }
+ *length = elt->private.msg.header.text.size;
+ return (char *) elt->private.msg.header.text.data;
+}
+\f
+/* MX mail fetch message text (body only)
+ * Accepts: MAIL stream
+ * message # to fetch
+ * pointer to returned stringstruct
+ * option flags
+ * Returns: T on success, NIL on failure
+ */
+
+long mx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
+{
+ unsigned long i;
+ MESSAGECACHE *elt;
+ /* UID call "impossible" */
+ if (flags & FT_UID) return NIL;
+ elt = mail_elt (stream,msgno);
+ /* snarf message if don't have it yet */
+ if (!elt->private.msg.text.text.data) {
+ mx_header (stream,msgno,&i,flags);
+ if (!elt->private.msg.text.text.data) return NIL;
+ }
+ /* mark as seen */
+ if (!(flags & FT_PEEK) && mx_lockindex (stream)) {
+ elt->seen = T;
+ mx_unlockindex (stream);
+ MM_FLAGS (stream,msgno);
+ }
+ INIT (bs,mail_string,elt->private.msg.text.text.data,
+ elt->private.msg.text.text.size);
+ return T;
+}
+\f
+/* MX mail modify flags
+ * Accepts: MAIL stream
+ * sequence
+ * flag(s)
+ * option flags
+ */
+
+void mx_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
+{
+ mx_unlockindex (stream); /* finished with index */
+}
+
+
+/* MX per-message modify flags
+ * Accepts: MAIL stream
+ * message cache element
+ */
+
+void mx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt)
+{
+ mx_lockindex (stream); /* lock index if not already locked */
+}
+\f
+/* MX mail ping mailbox
+ * Accepts: MAIL stream
+ * Returns: T if stream alive, else NIL
+ */
+
+long mx_ping (MAILSTREAM *stream)
+{
+ MAILSTREAM *sysibx = NIL;
+ MESSAGECACHE *elt,*selt;
+ struct stat sbuf;
+ char *s,tmp[MAILTMPLEN];
+ int fd;
+ unsigned long i,j,r,old;
+ long nmsgs = stream->nmsgs;
+ long recent = stream->recent;
+ int silent = stream->silent;
+ if (stat (stream->mailbox,&sbuf)) return NIL;
+ stream->silent = T; /* don't pass up exists events yet */
+ if (sbuf.st_ctime != LOCAL->scantime) {
+ struct direct **names = NIL;
+ long nfiles = scandir (stream->mailbox,&names,mx_select,mx_numsort);
+ if (nfiles < 0) nfiles = 0; /* in case error */
+ old = stream->uid_last;
+ /* note scanned now */
+ LOCAL->scantime = sbuf.st_ctime;
+ /* scan directory */
+ for (i = 0; i < nfiles; ++i) {
+ /* if newly seen, add to list */
+ if ((j = atoi (names[i]->d_name)) > old) {
+ /* swell the cache */
+ mail_exists (stream,++nmsgs);
+ stream->uid_last = (elt = mail_elt (stream,nmsgs))->private.uid = j;
+ elt->valid = T; /* note valid flags */
+ if (old) { /* other than the first pass? */
+ elt->recent = T; /* yup, mark as recent */
+ recent++; /* bump recent count */
+ }
+ }
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory */
+ if (s = (void *) names) fs_give ((void **) &s);
+ }
+ stream->nmsgs = nmsgs; /* don't upset mail_uid() */
+\f
+ /* if INBOX, snarf from system INBOX */
+ if (mx_lockindex (stream) && stream->inbox &&
+ !strcmp (sysinbox (),stream->mailbox)) {
+ old = stream->uid_last;
+ MM_CRITICAL (stream); /* go critical */
+ /* see if anything in system inbox */
+ if (!stat (sysinbox (),&sbuf) && sbuf.st_size &&
+ (sysibx = mail_open (sysibx,sysinbox (),OP_SILENT)) &&
+ !sysibx->rdonly && (r = sysibx->nmsgs)) {
+ for (i = 1; i <= r; ++i) {/* for each message in sysinbox mailbox */
+ /* build file name we will use */
+ sprintf (LOCAL->buf,"%s/%lu",stream->mailbox,++old);
+ /* snarf message from Berkeley mailbox */
+ selt = mail_elt (sysibx,i);
+ if (((fd = open (LOCAL->buf,O_WRONLY|O_CREAT|O_EXCL,
+ (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL)))
+ >= 0) &&
+ (s = mail_fetchheader_full (sysibx,i,NIL,&j,FT_PEEK)) &&
+ (write (fd,s,j) == j) &&
+ (s = mail_fetchtext_full (sysibx,i,&j,FT_PEEK)) &&
+ (write (fd,s,j) == j) && !fsync (fd) && !close (fd)) {
+ /* swell the cache */
+ mail_exists (stream,++nmsgs);
+ stream->uid_last = /* create new elt, note its file number */
+ (elt = mail_elt (stream,nmsgs))->private.uid = old;
+ recent++; /* bump recent count */
+ /* set up initial flags and date */
+ elt->valid = elt->recent = T;
+ elt->seen = selt->seen;
+ elt->deleted = selt->deleted;
+ elt->flagged = selt->flagged;
+ elt->answered = selt->answered;
+ elt->draft = selt->draft;
+ elt->day = selt->day;elt->month = selt->month;elt->year = selt->year;
+ elt->hours = selt->hours;elt->minutes = selt->minutes;
+ elt->seconds = selt->seconds;
+ elt->zhours = selt->zhours; elt->zminutes = selt->zminutes;
+ elt->zoccident = selt->zoccident;
+ mx_setdate (LOCAL->buf,elt);
+ sprintf (tmp,"%lu",i);/* delete it from the sysinbox */
+ mail_flag (sysibx,tmp,"\\Deleted",ST_SET);
+ }
+ else { /* failed to snarf */
+ if (fd) { /* did it ever get opened? */
+ close (fd); /* close descriptor */
+ unlink (LOCAL->buf);/* flush this file */
+ }
+ sprintf (tmp,"Message copy to MX mailbox failed: %.80s",
+ s,strerror (errno));
+ MM_LOG (tmp,ERROR);
+ r = 0; /* stop the snarf in its tracks */
+ }
+ }
+ /* update scan time */
+ if (!stat (stream->mailbox,&sbuf)) LOCAL->scantime = sbuf.st_ctime;
+ mail_expunge (sysibx); /* now expunge all those messages */
+ }
+ if (sysibx) mail_close (sysibx);
+ MM_NOCRITICAL (stream); /* release critical */
+ }
+ mx_unlockindex (stream); /* done with index */
+ stream->silent = silent; /* can pass up events now */
+ mail_exists (stream,nmsgs); /* notify upper level of mailbox size */
+ mail_recent (stream,recent);
+ return T; /* return that we are alive */
+}
+\f
+/* MX mail check mailbox
+ * Accepts: MAIL stream
+ */
+
+void mx_check (MAILSTREAM *stream)
+{
+ if (mx_ping (stream)) MM_LOG ("Check completed",(long) NIL);
+}
+
+
+/* MX mail expunge mailbox
+ * Accepts: MAIL stream
+ * sequence to expunge if non-NIL
+ * expunge options
+ * Returns: T, always
+ */
+
+long mx_expunge (MAILSTREAM *stream,char *sequence,long options)
+{
+ long ret;
+ MESSAGECACHE *elt;
+ unsigned long i = 1;
+ unsigned long n = 0;
+ unsigned long recent = stream->recent;
+ if (ret = (sequence ? ((options & EX_UID) ?
+ mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence)) : LONGT) &&
+ mx_lockindex (stream)) { /* lock the index */
+ MM_CRITICAL (stream); /* go critical */
+ while (i <= stream->nmsgs) {/* for each message */
+ elt = mail_elt (stream,i);/* if deleted, need to trash it */
+ if (elt->deleted && (sequence ? elt->sequence : T)) {
+ sprintf (LOCAL->buf,"%s/%lu",stream->mailbox,elt->private.uid);
+ if (unlink (LOCAL->buf)) {/* try to delete the message */
+ sprintf (LOCAL->buf,"Expunge of message %lu failed, aborted: %s",i,
+ strerror (errno));
+ MM_LOG (LOCAL->buf,(long) NIL);
+ break;
+ }
+ /* note uncached */
+ LOCAL->cachedtexts -= ((elt->private.msg.header.text.data ?
+ elt->private.msg.header.text.size : 0) +
+ (elt->private.msg.text.text.data ?
+ elt->private.msg.text.text.size : 0));
+ mail_gc_msg (&elt->private.msg,GC_ENV | GC_TEXTS);
+ if(elt->recent)--recent;/* if recent, note one less recent message */
+ mail_expunged(stream,i);/* notify upper levels */
+ n++; /* count up one more expunged message */
+ }
+ else i++; /* otherwise try next message */
+ }
+ if (n) { /* output the news if any expunged */
+ sprintf (LOCAL->buf,"Expunged %lu messages",n);
+ MM_LOG (LOCAL->buf,(long) NIL);
+ }
+ else MM_LOG ("No messages deleted, so no update needed",(long) NIL);
+ MM_NOCRITICAL (stream); /* release critical */
+ mx_unlockindex (stream); /* finished with index */
+ /* notify upper level of new mailbox size */
+ mail_exists (stream,stream->nmsgs);
+ mail_recent (stream,recent);
+ }
+ return ret;
+}
+\f
+/* MX mail copy message(s)
+ * Accepts: MAIL stream
+ * sequence
+ * destination mailbox
+ * copy options
+ * Returns: T if copy successful, else NIL
+ */
+
+long mx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+{
+ FDDATA d;
+ STRING st;
+ MESSAGECACHE *elt;
+ MAILSTREAM *astream;
+ struct stat sbuf;
+ int fd;
+ unsigned long i,j,uid,uidv;
+ char *t,tmp[MAILTMPLEN];
+ long ret;
+ mailproxycopy_t pc =
+ (mailproxycopy_t) mail_parameters (stream,GET_MAILPROXYCOPY,NIL);
+ /* make sure valid mailbox */
+ if (!mx_valid (mailbox)) switch (errno) {
+ case NIL: /* no error in stat() */
+ if (pc) return (*pc) (stream,sequence,mailbox,options);
+ sprintf (LOCAL->buf,"Not a MX-format mailbox: %.80s",mailbox);
+ MM_LOG (LOCAL->buf,ERROR);
+ return NIL;
+ default: /* some stat() error */
+ MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before copy",NIL);
+ return NIL;
+ }
+ /* copy the messages */
+ if (!(ret = ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence))));
+ /* acquire stream to append to */
+ else if (!(astream = mail_open (NIL,mailbox,OP_SILENT))) {
+ MM_LOG ("Can't open copy mailbox",ERROR);
+ ret = NIL;
+ }
+ else {
+ MM_CRITICAL (stream); /* go critical */
+ if (!(ret = mx_lockindex (astream)))
+ MM_LOG ("Message copy failed: unable to lock index",ERROR);
+ else {
+\f
+ copyuid_t cu = (copyuid_t) mail_parameters (NIL,GET_COPYUID,NIL);
+ SEARCHSET *source = cu ? mail_newsearchset () : NIL;
+ SEARCHSET *dest = cu ? mail_newsearchset () : NIL;
+ for (i = 1,uid = uidv = 0; ret && (i <= stream->nmsgs); i++)
+ if ((elt = mail_elt (stream,i))->sequence) {
+ if (ret = ((fd = open (mx_fast_work (stream,elt),O_RDONLY,NIL))
+ >= 0)) {
+ fstat (fd,&sbuf); /* get size of message */
+ d.fd = fd; /* set up file descriptor */
+ d.pos = 0; /* start of file */
+ d.chunk = LOCAL->buf;
+ d.chunksize = CHUNKSIZE;
+ INIT (&st,fd_string,&d,sbuf.st_size);
+ /* init flag string */
+ tmp[0] = tmp[1] = '\0';
+ if (j = elt->user_flags) do
+ if (t = stream->user_flags[find_rightmost_bit (&j)])
+ strcat (strcat (tmp," "),t);
+ while (j);
+ if (elt->seen) strcat (tmp," \\Seen");
+ if (elt->deleted) strcat (tmp," \\Deleted");
+ if (elt->flagged) strcat (tmp," \\Flagged");
+ if (elt->answered) strcat (tmp," \\Answered");
+ if (elt->draft) strcat (tmp," \\Draft");
+ tmp[0] = '('; /* open list */
+ strcat (tmp,")"); /* close list */
+ if (ret = mx_append_msg (astream,tmp,elt,&st,dest)) {
+ /* add to source set if needed */
+ if (source) mail_append_set (source,mail_uid (stream,i));
+ /* delete if doing a move */
+ if (options & CP_MOVE) elt->deleted = T;
+ }
+ }
+ }
+ /* return sets if doing COPYUID */
+ if (cu && ret) (*cu) (stream,mailbox,astream->uid_validity,source,dest);
+ else { /* flush any sets we may have built */
+ mail_free_searchset (&source);
+ mail_free_searchset (&dest);
+ }
+ mx_unlockindex (astream); /* unlock index */
+ }
+ MM_NOCRITICAL (stream);
+ mail_close (astream); /* finished with append stream */
+ }
+ return ret; /* return success */
+}
+\f
+/* MX mail append message from stringstruct
+ * Accepts: MAIL stream
+ * destination mailbox
+ * append callback
+ * data for callback
+ * Returns: T if append successful, else NIL
+ */
+
+long mx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+{
+ MESSAGECACHE elt;
+ MAILSTREAM *astream;
+ char *flags,*date,tmp[MAILTMPLEN];
+ STRING *message;
+ long ret = LONGT;
+ /* default stream to prototype */
+ if (!stream) stream = user_flags (&mxproto);
+ /* N.B.: can't use LOCAL->buf for tmp */
+ /* make sure valid mailbox */
+ if (!mx_isvalid (mailbox,tmp)) switch (errno) {
+ case ENOENT: /* no such file? */
+ if (!compare_cstring (mailbox,"INBOX")) mx_create (NIL,"INBOX");
+ else {
+ MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before append",NIL);
+ return NIL;
+ }
+ /* falls through */
+ case 0: /* merely empty file? */
+ break;
+ case EINVAL:
+ sprintf (tmp,"Invalid MX-format mailbox name: %.80s",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ default:
+ sprintf (tmp,"Not a MX-format mailbox: %.80s",mailbox);
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+\f
+ /* get first message */
+ if (!MM_APPEND (af) (stream,data,&flags,&date,&message)) return NIL;
+ if (!(astream = mail_open (NIL,mailbox,OP_SILENT))) {
+ MM_LOG ("Can't open append mailbox",ERROR);
+ return NIL;
+ }
+ MM_CRITICAL (astream); /* go critical */
+ /* lock the index */
+ if (!(ret = mx_lockindex (astream)))
+ MM_LOG ("Message append failed: unable to lock index",ERROR);
+ else {
+ appenduid_t au = (appenduid_t) mail_parameters (NIL,GET_APPENDUID,NIL);
+ SEARCHSET *dst = au ? mail_newsearchset () : NIL;
+ do {
+ /* guard against zero-length */
+ if (!(ret = SIZE (message)))
+ MM_LOG ("Append of zero-length message",ERROR);
+ else if (date && !(ret = mail_parse_date (&elt,date))) {
+ sprintf (tmp,"Bad date in append: %.80s",date);
+ MM_LOG (tmp,ERROR);
+ }
+ else ret = mx_append_msg (astream,flags,date ? &elt : NIL,message,dst)&&
+ MM_APPEND (af) (stream,data,&flags,&date,&message);
+ } while (ret && message);
+ /* return sets if doing APPENDUID */
+ if (au && ret) (*au) (mailbox,astream->uid_validity,dst);
+ else mail_free_searchset (&dst);
+ mx_unlockindex (astream); /* unlock index */
+ }
+ MM_NOCRITICAL (astream); /* release critical */
+ mail_close (astream);
+ return ret;
+}
+\f
+/* MX mail append single message
+ * Accepts: MAIL stream
+ * flags for new message if non-NIL
+ * elt with source date if non-NIL
+ * stringstruct of message text
+ * searchset to place UID
+ * Returns: T if success, NIL if failure
+ */
+
+long mx_append_msg (MAILSTREAM *stream,char *flags,MESSAGECACHE *elt,
+ STRING *st,SEARCHSET *set)
+{
+ char tmp[MAILTMPLEN];
+ int fd;
+ unsigned long uf;
+ long f = mail_parse_flags (stream,flags,&uf);
+ /* make message file name */
+ sprintf (tmp,"%s/%lu",stream->mailbox,++stream->uid_last);
+ if ((fd = open (tmp,O_WRONLY|O_CREAT|O_EXCL,
+ (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL))) < 0) {
+ sprintf (tmp,"Can't create append message: %s",strerror (errno));
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ while (SIZE (st)) { /* copy the file */
+ if (st->cursize && (write (fd,st->curpos,st->cursize) < 0)) {
+ unlink (tmp); /* delete file */
+ close (fd); /* close the file */
+ sprintf (tmp,"Message append failed: %s",strerror (errno));
+ MM_LOG (tmp,ERROR);
+ return NIL;
+ }
+ SETPOS (st,GETPOS (st) + st->cursize);
+ }
+ close (fd); /* close the file */
+ if (elt) mx_setdate (tmp,elt);/* set file date */
+ /* swell the cache */
+ mail_exists (stream,++stream->nmsgs);
+ /* copy flags */
+ mail_append_set (set,(elt = mail_elt (stream,stream->nmsgs))->private.uid =
+ stream->uid_last);
+ if (f&fSEEN) elt->seen = T;
+ if (f&fDELETED) elt->deleted = T;
+ if (f&fFLAGGED) elt->flagged = T;
+ if (f&fANSWERED) elt->answered = T;
+ if (f&fDRAFT) elt->draft = T;
+ elt->user_flags |= uf;
+ return LONGT;
+}
+\f
+/* Internal routines */
+
+
+/* MX file name selection test
+ * Accepts: candidate directory entry
+ * Returns: T to use file name, NIL to skip it
+ */
+
+int mx_select (struct direct *name)
+{
+ char c;
+ char *s = name->d_name;
+ while (c = *s++) if (!isdigit (c)) return NIL;
+ return T;
+}
+
+
+/* MX file name comparision
+ * Accepts: first candidate directory entry
+ * second candidate directory entry
+ * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+ */
+
+int mx_numsort (const void *d1,const void *d2)
+{
+ return atoi ((*(struct direct **) d1)->d_name) -
+ atoi ((*(struct direct **) d2)->d_name);
+}
+
+
+/* MX mail build file name
+ * Accepts: destination string
+ * source
+ * Returns: destination
+ */
+
+char *mx_file (char *dst,char *name)
+{
+ char *s;
+ /* empty string if mailboxfile fails */
+ if (!mailboxfile (dst,name)) *dst = '\0';
+ /* driver-selected INBOX */
+ else if (!*dst) mailboxfile (dst,"~/INBOX");
+ /* tie off unnecessary trailing / */
+ else if ((s = strrchr (dst,'/')) && !s[1]) *s = '\0';
+ return dst;
+}
+\f
+/* MX read and lock index
+ * Accepts: MAIL stream
+ * Returns: T if success, NIL if failure
+ */
+
+long mx_lockindex (MAILSTREAM *stream)
+{
+ unsigned long uf,sf,uid;
+ int k = 0;
+ unsigned long msgno = 1;
+ struct stat sbuf;
+ char *s,*t,*idx,tmp[2*MAILTMPLEN];
+ MESSAGECACHE *elt;
+ blocknotify_t bn = (blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
+ if ((LOCAL->fd < 0) && /* get index file, no-op if already have it */
+ (LOCAL->fd = open (strcat (strcpy (tmp,stream->mailbox),MXINDEXNAME),
+ O_RDWR|O_CREAT,
+ (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL)))
+ >= 0) {
+ (*bn) (BLOCK_FILELOCK,NIL);
+ flock (LOCAL->fd,LOCK_EX); /* get exclusive lock */
+ (*bn) (BLOCK_NONE,NIL);
+ fstat (LOCAL->fd,&sbuf); /* get size of index */
+ /* slurp index */
+ read (LOCAL->fd,s = idx = (char *) fs_get (sbuf.st_size + 1),sbuf.st_size);
+ idx[sbuf.st_size] = '\0'; /* tie off index */
+ /* parse index */
+ if (sbuf.st_size) while (s && *s) switch (*s) {
+ case 'V': /* UID validity record */
+ stream->uid_validity = strtoul (s+1,&s,16);
+ break;
+ case 'L': /* UID last record */
+ stream->uid_last = strtoul (s+1,&s,16);
+ break;
+ case 'K': /* keyword */
+ /* find end of keyword */
+ if (s = strchr (t = ++s,'\n')) {
+ *s++ = '\0'; /* tie off keyword */
+ /* copy keyword */
+ if ((k < NUSERFLAGS) && !stream->user_flags[k] &&
+ (strlen (t) <= MAXUSERFLAG)) stream->user_flags[k] = cpystr (t);
+ k++; /* one more keyword */
+ }
+ break;
+\f
+ case 'M': /* message status record */
+ uid = strtoul (s+1,&s,16);/* get UID for this message */
+ if (*s == ';') { /* get user flags */
+ uf = strtoul (s+1,&s,16);
+ if (*s == '.') { /* get system flags */
+ sf = strtoul (s+1,&s,16);
+ while ((msgno <= stream->nmsgs) && (mail_uid (stream,msgno) < uid))
+ msgno++; /* find message number for this UID */
+ if ((msgno <= stream->nmsgs) && (mail_uid (stream,msgno) == uid)) {
+ (elt = mail_elt (stream,msgno))->valid = T;
+ elt->user_flags=uf; /* set user and system flags in elt */
+ if (sf & fSEEN) elt->seen = T;
+ if (sf & fDELETED) elt->deleted = T;
+ if (sf & fFLAGGED) elt->flagged = T;
+ if (sf & fANSWERED) elt->answered = T;
+ if (sf & fDRAFT) elt->draft = T;
+ }
+ break;
+ }
+ }
+ default: /* bad news */
+ sprintf (tmp,"Error in index: %.80s",s);
+ MM_LOG (tmp,ERROR);
+ *s = NIL; /* ignore remainder of index */
+ }
+ else { /* new index */
+ stream->uid_validity = time (0);
+ user_flags (stream); /* init stream with default user flags */
+ }
+ fs_give ((void **) &idx); /* flush index */
+ }
+ return (LOCAL->fd >= 0) ? T : NIL;
+}
+\f
+/* MX write and unlock index
+ * Accepts: MAIL stream
+ */
+
+#define MXIXBUFLEN 2048
+
+void mx_unlockindex (MAILSTREAM *stream)
+{
+ unsigned long i,j;
+ off_t size = 0;
+ char *s,tmp[MXIXBUFLEN + 64];
+ MESSAGECACHE *elt;
+ if (LOCAL->fd >= 0) {
+ lseek (LOCAL->fd,0,L_SET); /* rewind file */
+ /* write header */
+ sprintf (s = tmp,"V%08lxL%08lx",stream->uid_validity,stream->uid_last);
+ for (i = 0; (i < NUSERFLAGS) && stream->user_flags[i]; ++i)
+ sprintf (s += strlen (s),"K%s\n",stream->user_flags[i]);
+ /* write messages */
+ for (i = 1; i <= stream->nmsgs; i++) {
+ /* filled buffer? */
+ if (((s += strlen (s)) - tmp) > MXIXBUFLEN) {
+ write (LOCAL->fd,tmp,j = s - tmp);
+ size += j;
+ *(s = tmp) = '\0'; /* dump out and restart buffer */
+ }
+ elt = mail_elt (stream,i);
+ sprintf(s,"M%08lx;%08lx.%04x",elt->private.uid,elt->user_flags,(unsigned)
+ ((fSEEN * elt->seen) + (fDELETED * elt->deleted) +
+ (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered) +
+ (fDRAFT * elt->draft)));
+ }
+ /* write tail end of buffer */
+ if ((s += strlen (s)) != tmp) {
+ write (LOCAL->fd,tmp,j = s - tmp);
+ size += j;
+ }
+ ftruncate (LOCAL->fd,size);
+ flock (LOCAL->fd,LOCK_UN); /* unlock the index */
+ close (LOCAL->fd); /* finished with file */
+ LOCAL->fd = -1; /* no index now */
+ }
+}
+\f
+/* Set date for message
+ * Accepts: file name
+ * elt containing date
+ */
+
+void mx_setdate (char *file,MESSAGECACHE *elt)
+{
+ time_t tp[2];
+ tp[0] = time (0); /* atime is now */
+ tp[1] = mail_longdate (elt); /* modification time */
+ utime (file,tp); /* set the times */
+}
projects / uw-imap / commitdiff