--- /dev/null
+/* ========================================================================
+ * Copyright 1988-2007 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: MH 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: 23 February 1992
+ * Last Edited: 11 October 2007
+ */
+
+
+#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"
+
+
+/* Build parameters */
+
+#define MHINBOX "#mhinbox" /* corresponds to namespace in env_unix.c */
+#define MHINBOXDIR "inbox"
+#define MHPROFILE ".mh_profile"
+#define MHCOMMA ','
+#define MHSEQUENCE ".mh_sequence"
+#define MHSEQUENCES ".mh_sequences"
+#define MHPATH "Mail"
+
+
+/* mh_load_message() flags */
+
+#define MLM_HEADER 0x1 /* load message text */
+#define MLM_TEXT 0x2 /* load message text */
+\f
+/* MH I/O stream local data */
+
+typedef struct mh_local {
+ char *dir; /* spool directory name */
+ unsigned char buf[CHUNKSIZE]; /* temporary buffer */
+ unsigned long cachedtexts; /* total size of all cached texts */
+ time_t scantime; /* last time directory scanned */
+} MHLOCAL;
+
+
+/* Convenient access to local data */
+
+#define LOCAL ((MHLOCAL *) stream->local)
+
+
+/* Function prototypes */
+
+DRIVER *mh_valid (char *name);
+int mh_isvalid (char *name,char *tmp,long synonly);
+int mh_namevalid (char *name);
+char *mh_path (char *tmp);
+void *mh_parameters (long function,void *value);
+long mh_dirfmttest (char *name);
+void mh_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+void mh_list (MAILSTREAM *stream,char *ref,char *pat);
+void mh_lsub (MAILSTREAM *stream,char *ref,char *pat);
+void mh_list_work (MAILSTREAM *stream,char *dir,char *pat,long level);
+long mh_subscribe (MAILSTREAM *stream,char *mailbox);
+long mh_unsubscribe (MAILSTREAM *stream,char *mailbox);
+long mh_create (MAILSTREAM *stream,char *mailbox);
+long mh_delete (MAILSTREAM *stream,char *mailbox);
+long mh_rename (MAILSTREAM *stream,char *old,char *newname);
+MAILSTREAM *mh_open (MAILSTREAM *stream);
+void mh_close (MAILSTREAM *stream,long options);
+void mh_fast (MAILSTREAM *stream,char *sequence,long flags);
+void mh_load_message (MAILSTREAM *stream,unsigned long msgno,long flags);
+char *mh_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags);
+long mh_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
+long mh_ping (MAILSTREAM *stream);
+void mh_check (MAILSTREAM *stream);
+long mh_expunge (MAILSTREAM *stream,char *sequence,long options);
+long mh_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
+ long options);
+long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+
+int mh_select (struct direct *name);
+int mh_numsort (const void *d1,const void *d2);
+char *mh_file (char *dst,char *name);
+long mh_canonicalize (char *pattern,char *ref,char *pat);
+void mh_setdate (char *file,MESSAGECACHE *elt);
+\f
+/* MH mail routines */
+
+
+/* Driver dispatch used by MAIL */
+
+DRIVER mhdriver = {
+ "mh", /* driver name */
+ /* driver flags */
+ DR_MAIL|DR_LOCAL|DR_NOFAST|DR_NAMESPACE|DR_NOSTICKY|DR_DIRFMT,
+ (DRIVER *) NIL, /* next driver */
+ mh_valid, /* mailbox is valid for us */
+ mh_parameters, /* manipulate parameters */
+ mh_scan, /* scan mailboxes */
+ mh_list, /* find mailboxes */
+ mh_lsub, /* find subscribed mailboxes */
+ mh_subscribe, /* subscribe to mailbox */
+ mh_unsubscribe, /* unsubscribe from mailbox */
+ mh_create, /* create mailbox */
+ mh_delete, /* delete mailbox */
+ mh_rename, /* rename mailbox */
+ mail_status_default, /* status of mailbox */
+ mh_open, /* open mailbox */
+ mh_close, /* close mailbox */
+ mh_fast, /* fetch message "fast" attributes */
+ NIL, /* fetch message flags */
+ NIL, /* fetch overview */
+ NIL, /* fetch message envelopes */
+ mh_header, /* fetch message header */
+ mh_text, /* fetch message body */
+ NIL, /* fetch partial message text */
+ NIL, /* unique identifier */
+ NIL, /* message number */
+ NIL, /* modify flags */
+ NIL, /* per-message modify flags */
+ NIL, /* search for message based on criteria */
+ NIL, /* sort messages */
+ NIL, /* thread messages */
+ mh_ping, /* ping mailbox to see if still alive */
+ mh_check, /* check for new messages */
+ mh_expunge, /* expunge deleted messages */
+ mh_copy, /* copy messages to another mailbox */
+ mh_append, /* append string message to mailbox */
+ NIL /* garbage collect stream */
+};
+
+ /* prototype stream */
+MAILSTREAM mhproto = {&mhdriver};
+
+
+static char *mh_profile = NIL; /* holds MH profile */
+static char *mh_pathname = NIL; /* holds MH path name */
+static long mh_once = 0; /* already snarled once */
+static long mh_allow_inbox =NIL;/* allow INBOX as well as MHINBOX */
+\f
+/* MH mail validate mailbox
+ * Accepts: mailbox name
+ * Returns: our driver if name is valid, NIL otherwise
+ */
+
+DRIVER *mh_valid (char *name)
+{
+ char tmp[MAILTMPLEN];
+ return mh_isvalid (name,tmp,T) ? &mhdriver : NIL;
+}
+
+
+/* MH mail test for valid mailbox
+ * Accepts: mailbox name
+ * temporary buffer to use
+ * syntax only test flag
+ * Returns: T if valid, NIL otherwise
+ */
+
+int mh_isvalid (char *name,char *tmp,long synonly)
+{
+ struct stat sbuf;
+ char *s,*t,altname[MAILTMPLEN];
+ unsigned long i;
+ int ret = NIL;
+ errno = NIL; /* zap any error condition */
+ /* mh name? */
+ if ((mh_allow_inbox && !compare_cstring (name,"INBOX")) ||
+ !compare_cstring (name,MHINBOX) ||
+ ((name[0] == '#') && ((name[1] == 'm') || (name[1] == 'M')) &&
+ ((name[2] == 'h') || (name[2] == 'H')) && (name[3] == '/') && name[4])){
+ if (mh_path (tmp)) /* validate name if INBOX or not synonly */
+ ret = (synonly && compare_cstring (name,"INBOX")) ?
+ T : ((stat (mh_file (tmp,name),&sbuf) == 0) &&
+ (sbuf.st_mode & S_IFMT) == S_IFDIR);
+ else if (!mh_once++) { /* only report error once */
+ sprintf (tmp,"%.900s not found, mh format names disabled",mh_profile);
+ mm_log (tmp,WARN);
+ }
+ }
+ /* see if non-NS name within mh hierarchy */
+ else if ((name[0] != '#') && (s = mh_path (tmp)) && (i = strlen (s)) &&
+ (t = mailboxfile (tmp,name)) && !strncmp (t,s,i) &&
+ (tmp[i] == '/') && tmp[i+1]) {
+ sprintf (altname,"#mh%.900s",tmp+i);
+ /* can't do synonly here! */
+ ret = mh_isvalid (altname,tmp,NIL);
+ }
+ else errno = EINVAL; /* bogus name */
+ return ret;
+}
+\f
+/* MH mail test for valid mailbox
+ * Accepts: mailbox name
+ * Returns: T if valid, NIL otherwise
+ */
+
+int mh_namevalid (char *name)
+{
+ char *s;
+ if (name[0] == '#' && (name[1] == 'm' || name[1] == 'M') &&
+ (name[2] == 'h' || name[2] == 'H') && name[3] == '/')
+ for (s = name; s && *s;) { /* make sure no all-digit nodes */
+ 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
+/* Return MH path
+ * Accepts: temporary buffer
+ * Returns: MH path or NIL if MH disabled
+ */
+
+char *mh_path (char *tmp)
+{
+ char *s,*t,*v,*r;
+ int fd;
+ struct stat sbuf;
+ if (!mh_profile) { /* build mh_profile and mh_pathname now */
+ sprintf (tmp,"%s/%s",myhomedir (),MHPROFILE);
+ if ((fd = open (mh_profile = cpystr (tmp),O_RDONLY,NIL)) >= 0) {
+ fstat (fd,&sbuf); /* yes, get size and read file */
+ read (fd,(t = (char *) fs_get (sbuf.st_size + 1)),sbuf.st_size);
+ close (fd); /* don't need the file any more */
+ t[sbuf.st_size] = '\0'; /* tie it off */
+ /* parse profile file */
+ for (s = strtok_r (t,"\r\n",&r); s && *s; s = strtok_r (NIL,"\r\n",&r)) {
+ /* found space in line? */
+ if (v = strpbrk (s," \t")) {
+ *v++ = '\0'; /* tie off, is keyword "Path:"? */
+ if (!compare_cstring (s,"Path:")) {
+ /* skip whitespace */
+ while ((*v == ' ') || (*v == '\t')) ++v;
+ /* absolute path? */
+ if (*v == '/') s = v;
+ else sprintf (s = tmp,"%s/%s",myhomedir (),v);
+ /* copy name */
+ mh_pathname = cpystr (s);
+ break; /* don't need to look at rest of file */
+ }
+ }
+ }
+ fs_give ((void **) &t); /* flush profile text */
+ if (!mh_pathname) { /* default path if not in the profile */
+ sprintf (tmp,"%s/%s",myhomedir (),MHPATH);
+ mh_pathname = cpystr (tmp);
+ }
+ }
+ }
+ return mh_pathname;
+}
+\f
+/* MH manipulate driver parameters
+ * Accepts: function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *mh_parameters (long function,void *value)
+{
+ void *ret = NIL;
+ switch ((int) function) {
+ case GET_INBOXPATH:
+ if (value) ret = mh_file ((char *) value,"INBOX");
+ break;
+ case GET_DIRFMTTEST:
+ ret = (void *) mh_dirfmttest;
+ break;
+ case SET_MHPROFILE:
+ if (mh_profile) fs_give ((void **) &mh_profile);
+ mh_profile = cpystr ((char *) value);
+ case GET_MHPROFILE:
+ ret = (void *) mh_profile;
+ break;
+ case SET_MHPATH:
+ if (mh_pathname) fs_give ((void **) &mh_pathname);
+ mh_pathname = cpystr ((char *) value);
+ case GET_MHPATH:
+ ret = (void *) mh_pathname;
+ break;
+ case SET_MHALLOWINBOX:
+ mh_allow_inbox = value ? T : NIL;
+ case GET_MHALLOWINBOX:
+ ret = (void *) (mh_allow_inbox ? VOIDT : NIL);
+ }
+ return ret;
+}
+
+
+/* MH test for directory format internal node
+ * Accepts: candidate node name
+ * Returns: T if internal name, NIL otherwise
+ */
+
+long mh_dirfmttest (char *s)
+{
+ int c;
+ /* sequence(s) file is an internal name */
+ if (strcmp (s,MHSEQUENCE) && strcmp (s,MHSEQUENCES)) {
+ if (*s == MHCOMMA) ++s; /* else comma + all numeric name */
+ /* success if all-numeric */
+ while (c = *s++) if (!isdigit (c)) return NIL;
+ }
+ return LONGT;
+}
+\f
+/* MH scan mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ * string to scan
+ */
+
+void mh_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
+{
+ char *s,test[MAILTMPLEN],file[MAILTMPLEN];
+ long i = 0;
+ if (!pat || !*pat) { /* empty pattern? */
+ if (mh_canonicalize (test,ref,"*")) {
+ /* tie off name at root */
+ if (s = strchr (test,'/')) *++s = '\0';
+ else test[0] = '\0';
+ mm_list (stream,'/',test,LATT_NOSELECT);
+ }
+ }
+ /* get canonical form of name */
+ else if (mh_canonicalize (test,ref,pat)) {
+ if (contents) { /* maybe I'll implement this someday */
+ mm_log ("Scan not valid for mh mailboxes",ERROR);
+ return;
+ }
+ if (test[3] == '/') { /* looking down levels? */
+ /* yes, found any wildcards? */
+ if (s = strpbrk (test,"%*")) {
+ /* yes, copy name up to that point */
+ strncpy (file,test+4,i = s - (test+4));
+ file[i] = '\0'; /* tie off */
+ }
+ else strcpy (file,test+4);/* use just that name then */
+ /* find directory name */
+ if (s = strrchr (file,'/')) {
+ *s = '\0'; /* found, tie off at that point */
+ s = file;
+ }
+ /* do the work */
+ mh_list_work (stream,s,test,0);
+ }
+ /* always an INBOX */
+ if (!compare_cstring (test,MHINBOX))
+ mm_list (stream,NIL,MHINBOX,LATT_NOINFERIORS);
+ }
+}
+\f
+/* MH list mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mh_list (MAILSTREAM *stream,char *ref,char *pat)
+{
+ mh_scan (stream,ref,pat,NIL);
+}
+
+
+/* MH list subscribed mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mh_lsub (MAILSTREAM *stream,char *ref,char *pat)
+{
+ void *sdb = NIL;
+ char *s,test[MAILTMPLEN];
+ /* get canonical form of name */
+ if (mh_canonicalize (test,ref,pat) && (s = sm_read (&sdb))) {
+ do if (pmatch_full (s,test,'/')) mm_lsub (stream,'/',s,NIL);
+ while (s = sm_read (&sdb)); /* until no more subscriptions */
+ }
+}
+\f
+/* MH list mailboxes worker routine
+ * Accepts: mail stream
+ * directory name to search
+ * search pattern
+ * search level
+ */
+
+void mh_list_work (MAILSTREAM *stream,char *dir,char *pat,long level)
+{
+ DIR *dp;
+ struct direct *d;
+ struct stat sbuf;
+ char *cp,*np,curdir[MAILTMPLEN],name[MAILTMPLEN];
+ /* build MH name to search */
+ if (dir) sprintf (name,"#mh/%s/",dir);
+ else strcpy (name,"#mh/");
+ /* make directory name, punt if bogus */
+ if (!mh_file (curdir,name)) return;
+ cp = curdir + strlen (curdir);/* end of directory name */
+ np = name + strlen (name); /* end of MH name */
+ if (dp = opendir (curdir)) { /* open directory */
+ while (d = readdir (dp)) /* scan, ignore . and numeric names */
+ if ((d->d_name[0] != '.') && !mh_select (d)) {
+ strcpy (cp,d->d_name); /* make directory name */
+ if (!stat (curdir,&sbuf) && ((sbuf.st_mode & S_IFMT) == S_IFDIR)) {
+ strcpy (np,d->d_name);/* make mh name of directory name */
+ /* yes, an MH name if full match */
+ if (pmatch_full (name,pat,'/')) mm_list (stream,'/',name,NIL);
+ /* check if should recurse */
+ if (dmatch (name,pat,'/') &&
+ (level < (long) mail_parameters (NIL,GET_LISTMAXLEVEL,NIL)))
+ mh_list_work (stream,name+4,pat,level+1);
+ }
+ }
+ closedir (dp); /* all done, flush directory */
+ }
+}
+\f
+/* MH mail subscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to add to subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_subscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_subscribe (mailbox);
+}
+
+
+/* MH mail unsubscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to delete from subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_unsubscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_unsubscribe (mailbox);
+}
+\f
+/* MH mail create mailbox
+ * Accepts: mail stream
+ * mailbox name to create
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_create (MAILSTREAM *stream,char *mailbox)
+{
+ char tmp[MAILTMPLEN];
+ if (!mh_namevalid (mailbox)) /* validate name */
+ sprintf (tmp,"Can't create mailbox %.80s: invalid MH-format name",mailbox);
+ /* must not already exist */
+ else if (mh_isvalid (mailbox,tmp,NIL))
+ sprintf (tmp,"Can't create mailbox %.80s: mailbox already exists",mailbox);
+ else if (!mh_path (tmp)) return NIL;
+ /* try to make it */
+ else if (!(mh_file (tmp,mailbox) &&
+ dummy_create_path (stream,strcat (tmp,"/"),
+ get_dir_protection (mailbox))))
+ sprintf (tmp,"Can't create mailbox %.80s: %s",mailbox,strerror (errno));
+ else return LONGT; /* success */
+ mm_log (tmp,ERROR);
+ return NIL;
+}
+\f
+/* MH mail delete mailbox
+ * mailbox name to delete
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_delete (MAILSTREAM *stream,char *mailbox)
+{
+ DIR *dirp;
+ struct direct *d;
+ int i;
+ char tmp[MAILTMPLEN];
+ /* is mailbox valid? */
+ if (!mh_isvalid (mailbox,tmp,NIL)) {
+ sprintf (tmp,"Can't delete mailbox %.80s: no such mailbox",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ /* get name of directory */
+ i = strlen (mh_file (tmp,mailbox));
+ if (dirp = opendir (tmp)) { /* open directory */
+ tmp[i++] = '/'; /* now apply trailing delimiter */
+ /* massacre all mh owned files */
+ while (d = readdir (dirp)) if (mh_dirfmttest (d->d_name)) {
+ strcpy (tmp + i,d->d_name);
+ unlink (tmp); /* sayonara */
+ }
+ closedir (dirp); /* flush directory */
+ }
+ /* try to remove the directory */
+ if (rmdir (mh_file (tmp,mailbox))) {
+ sprintf (tmp,"Can't delete mailbox %.80s: %s",mailbox,strerror (errno));
+ mm_log (tmp,WARN);
+ }
+ return T; /* return success */
+}
+\f
+/* MH mail rename mailbox
+ * Accepts: MH mail stream
+ * old mailbox name
+ * new mailbox name
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_rename (MAILSTREAM *stream,char *old,char *newname)
+{
+ char c,*s,tmp[MAILTMPLEN],tmp1[MAILTMPLEN];
+ struct stat sbuf;
+ /* old mailbox name must be valid */
+ if (!mh_isvalid (old,tmp,NIL))
+ sprintf (tmp,"Can't rename mailbox %.80s: no such mailbox",old);
+ else if (!mh_namevalid (newname))
+ sprintf (tmp,"Can't rename to mailbox %.80s: invalid MH-format name",
+ newname);
+ /* new mailbox name must not be valid */
+ else if (mh_isvalid (newname,tmp,NIL))
+ sprintf (tmp,"Can't rename to mailbox %.80s: destination already exists",
+ newname);
+ /* success if can rename the directory */
+ else { /* found superior to destination name? */
+ if (s = strrchr (mh_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 (mh_file (tmp,old),tmp1)) return T;
+ sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %s",
+ old,newname,strerror (errno));
+ }
+ mm_log (tmp,ERROR); /* something failed */
+ return NIL;
+}
+\f
+/* MH mail open
+ * Accepts: stream to open
+ * Returns: stream on success, NIL on failure
+ */
+
+MAILSTREAM *mh_open (MAILSTREAM *stream)
+{
+ char tmp[MAILTMPLEN];
+ if (!stream) return &mhproto; /* return prototype for OP_PROTOTYPE call */
+ if (stream->local) fatal ("mh recycle stream");
+ stream->local = fs_get (sizeof (MHLOCAL));
+ /* INBOXness is one of the following:
+ * #mhinbox (case-independent)
+ * #mh/inbox (mh is case-independent, inbox is case-dependent)
+ * INBOX (case-independent
+ */
+ stream->inbox = /* note if an INBOX or not */
+ (!compare_cstring (stream->mailbox,MHINBOX) ||
+ ((stream->mailbox[0] == '#') &&
+ ((stream->mailbox[1] == 'm') || (stream->mailbox[1] == 'M')) &&
+ ((stream->mailbox[2] == 'h') || (stream->mailbox[2] == 'H')) &&
+ (stream->mailbox[3] == '/') && !strcmp (stream->mailbox+4,MHINBOXDIR)) ||
+ !compare_cstring (stream->mailbox,"INBOX")) ? T : NIL;
+ mh_file (tmp,stream->mailbox);/* get directory name */
+ LOCAL->dir = cpystr (tmp); /* copy directory name for later */
+ LOCAL->scantime = 0; /* not scanned yet */
+ LOCAL->cachedtexts = 0; /* no cached texts */
+ stream->sequence++; /* bump sequence number */
+ /* parse mailbox */
+ stream->nmsgs = stream->recent = 0;
+ if (!mh_ping (stream)) return NIL;
+ if (!(stream->nmsgs || stream->silent))
+ mm_log ("Mailbox is empty",(long) NIL);
+ return stream; /* return stream to caller */
+}
+\f
+/* MH mail close
+ * Accepts: MAIL stream
+ * close options
+ */
+
+void mh_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) mh_expunge (stream,NIL,NIL);
+ if (LOCAL->dir) fs_give ((void **) &LOCAL->dir);
+ /* nuke the local data */
+ fs_give ((void **) &stream->local);
+ stream->dtb = NIL; /* log out the DTB */
+ stream->silent = silent; /* reset silent state */
+ }
+}
+
+
+/* MH mail fetch fast information
+ * Accepts: MAIL stream
+ * sequence
+ * option flags
+ */
+
+void mh_fast (MAILSTREAM *stream,char *sequence,long flags)
+{
+ MESSAGECACHE *elt;
+ unsigned long i;
+ /* set up metadata for all messages */
+ 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 &&
+ !(elt->day && elt->rfc822_size)) mh_load_message (stream,i,NIL);
+}
+\f
+/* MH load message into cache
+ * Accepts: MAIL stream
+ * message #
+ * option flags
+ */
+
+void mh_load_message (MAILSTREAM *stream,unsigned long msgno,long flags)
+{
+ unsigned long i,j,nlseen;
+ int fd;
+ unsigned char c,*t;
+ struct stat sbuf;
+ MESSAGECACHE *elt;
+ FDDATA d;
+ STRING bs;
+ elt = mail_elt (stream,msgno);/* get elt */
+ /* build message file name */
+ sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->private.uid);
+ /* anything we need not currently cached? */
+ if ((!elt->day || !elt->rfc822_size ||
+ ((flags & MLM_HEADER) && !elt->private.msg.header.text.data) ||
+ ((flags & MLM_TEXT) && !elt->private.msg.text.text.data)) &&
+ ((fd = open (LOCAL->buf,O_RDONLY,NIL)) >= 0)) {
+ fstat (fd,&sbuf); /* get file metadata */
+ d.fd = fd; /* set up file descriptor */
+ d.pos = 0; /* start of file */
+ d.chunk = LOCAL->buf;
+ d.chunksize = CHUNKSIZE;
+ INIT (&bs,fd_string,&d,sbuf.st_size);
+ if (!elt->day) { /* set internaldate to file date */
+ struct tm *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;
+ }
+\f
+ if (!elt->rfc822_size) { /* know message size yet? */
+ for (i = 0, j = SIZE (&bs), nlseen = 0; j--; ) switch (SNX (&bs)) {
+ case '\015': /* unlikely carriage return */
+ if (!j || (CHR (&bs) != '\012')) {
+ i++; /* ugh, raw CR */
+ nlseen = NIL;
+ break;
+ }
+ SNX (&bs); /* eat the line feed, drop in */
+ --j;
+ case '\012': /* line feed? */
+ i += 2; /* count a CRLF */
+ /* header size known yet? */
+ if (!elt->private.msg.header.text.size && nlseen) {
+ /* note position in file */
+ elt->private.special.text.size = GETPOS (&bs);
+ /* and CRLF-adjusted size */
+ elt->private.msg.header.text.size = i;
+ }
+ nlseen = T; /* note newline seen */
+ break;
+ default: /* ordinary chararacter */
+ i++;
+ nlseen = NIL;
+ break;
+ }
+ SETPOS (&bs,0); /* restore old position */
+ elt->rfc822_size = i; /* note that we have size now */
+ /* header is entire message if no delimiter */
+ if (!elt->private.msg.header.text.size)
+ elt->private.msg.header.text.size = elt->rfc822_size;
+ /* text is remainder of message */
+ elt->private.msg.text.text.size =
+ elt->rfc822_size - elt->private.msg.header.text.size;
+ }
+ /* need to load cache with message data? */
+ if (((flags & MLM_HEADER) && !elt->private.msg.header.text.data) ||
+ ((flags & MLM_TEXT) && !elt->private.msg.text.text.data)) {
+ /* purge cache if too big */
+ if (LOCAL->cachedtexts > max (stream->nmsgs * 4096,2097152)) {
+ /* just can't keep that much */
+ mail_gc (stream,GC_TEXTS);
+ LOCAL->cachedtexts = 0;
+ }
+\f
+ if ((flags & MLM_HEADER) && !elt->private.msg.header.text.data) {
+ t = elt->private.msg.header.text.data =
+ (unsigned char *) fs_get (elt->private.msg.header.text.size + 1);
+ LOCAL->cachedtexts += elt->private.msg.header.text.size;
+ /* read in message header */
+ for (i = 0; i < elt->private.msg.header.text.size; i++)
+ switch (c = SNX (&bs)) {
+ case '\015': /* unlikely carriage return */
+ *t++ = c;
+ if ((CHR (&bs) == '\012')) {
+ *t++ = SNX (&bs);
+ i++;
+ }
+ break;
+ case '\012': /* line feed? */
+ *t++ = '\015';
+ i++;
+ default:
+ *t++ = c;
+ break;
+ }
+ *t = '\0'; /* tie off string */
+ if ((t - elt->private.msg.header.text.data) !=
+ elt->private.msg.header.text.size) fatal ("mh hdr size mismatch");
+ }
+ if ((flags & MLM_TEXT) && !elt->private.msg.text.text.data) {
+ t = elt->private.msg.text.text.data =
+ (unsigned char *) fs_get (elt->private.msg.text.text.size + 1);
+ SETPOS (&bs,elt->private.special.text.size);
+ LOCAL->cachedtexts += elt->private.msg.text.text.size;
+ /* read in message text */
+ for (i = 0; i < elt->private.msg.text.text.size; i++)
+ switch (c = SNX (&bs)) {
+ case '\015': /* unlikely carriage return */
+ *t++ = c;
+ if ((CHR (&bs) == '\012')) {
+ *t++ = SNX (&bs);
+ i++;
+ }
+ break;
+ case '\012': /* line feed? */
+ *t++ = '\015';
+ i++;
+ default:
+ *t++ = c;
+ break;
+ }
+ *t = '\0'; /* tie off string */
+ if ((t - elt->private.msg.text.text.data) !=
+ elt->private.msg.text.text.size) fatal ("mh txt size mismatch");
+ }
+ }
+ close (fd); /* flush message file */
+ }
+}
+\f
+/* MH 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 *mh_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags)
+{
+ 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)
+ mh_load_message (stream,msgno,MLM_HEADER);
+ *length = elt->private.msg.header.text.size;
+ return (char *) elt->private.msg.header.text.data;
+}
+
+
+/* MH 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 mh_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
+{
+ MESSAGECACHE *elt;
+ /* UID call "impossible" */
+ if (flags & FT_UID) return NIL;
+ elt = mail_elt (stream,msgno);/* get elt */
+ /* snarf message if don't have it yet */
+ if (!elt->private.msg.text.text.data) {
+ mh_load_message (stream,msgno,MLM_TEXT);
+ if (!elt->private.msg.text.text.data) return NIL;
+ }
+ if (!(flags & FT_PEEK)) { /* mark as seen */
+ mail_elt (stream,msgno)->seen = T;
+ mm_flags (stream,msgno);
+ }
+ INIT (bs,mail_string,elt->private.msg.text.text.data,
+ elt->private.msg.text.text.size);
+ return T;
+}
+\f
+/* MH mail ping mailbox
+ * Accepts: MAIL stream
+ * Returns: T if stream alive, else NIL
+ */
+
+long mh_ping (MAILSTREAM *stream)
+{
+ MAILSTREAM *sysibx = NIL;
+ MESSAGECACHE *elt,*selt;
+ struct stat sbuf;
+ char *s,tmp[MAILTMPLEN];
+ int fd;
+ unsigned long i,j,r;
+ unsigned long old = stream->uid_last;
+ long nmsgs = stream->nmsgs;
+ long recent = stream->recent;
+ int silent = stream->silent;
+ if (stat (LOCAL->dir,&sbuf)) {/* directory exists? */
+ if (stream->inbox && /* no, create if INBOX */
+ dummy_create_path (stream,strcat (mh_file (tmp,MHINBOX),"/"),
+ get_dir_protection ("INBOX"))) return T;
+ sprintf (tmp,"Can't open mailbox %.80s: no such mailbox",stream->mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ stream->silent = T; /* don't pass up mm_exists() events yet */
+ if (sbuf.st_ctime != LOCAL->scantime) {
+ struct direct **names = NIL;
+ long nfiles = scandir (LOCAL->dir,&names,mh_select,mh_numsort);
+ if (nfiles < 0) nfiles = 0; /* in case error */
+ /* 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) {
+ 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 */
+ }
+ else { /* see if already read */
+ sprintf (tmp,"%s/%s",LOCAL->dir,names[i]->d_name);
+ if (!stat (tmp,&sbuf) && (sbuf.st_atime > sbuf.st_mtime))
+ elt->seen = T;
+ }
+ }
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory */
+ if (s = (void *) names) fs_give ((void **) &s);
+ }
+\f
+ /* if INBOX, snarf from system INBOX */
+ if (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",LOCAL->dir,++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_INTERNAL)) &&
+ (write (fd,s,j) == j) &&
+ (s = mail_fetchtext_full (sysibx,i,&j,FT_INTERNAL|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;
+ mh_setdate (LOCAL->buf,elt);
+ sprintf (tmp,"%lu",i);/* delete it from the sysinbox */
+ mail_flag (sysibx,tmp,"\\Deleted",ST_SET);
+ }
+\f
+ 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 MH mailbox failed: %.80s",
+ s,strerror (errno));
+ mm_log (tmp,ERROR);
+ r = 0; /* stop the snarf in its tracks */
+ }
+ }
+ /* update scan time */
+ if (!stat (LOCAL->dir,&sbuf)) LOCAL->scantime = sbuf.st_ctime;
+ mail_expunge (sysibx); /* now expunge all those messages */
+ }
+ if (sysibx) mail_close (sysibx);
+ mm_nocritical (stream); /* release critical */
+ }
+ 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
+/* MH mail check mailbox
+ * Accepts: MAIL stream
+ */
+
+void mh_check (MAILSTREAM *stream)
+{
+ /* Perhaps in the future this will preserve flags */
+ if (mh_ping (stream)) mm_log ("Check completed",(long) NIL);
+}
+
+
+/* MH mail expunge mailbox
+ * Accepts: MAIL stream
+ * sequence to expunge if non-NIL
+ * expunge options
+ * Returns: T, always
+ */
+
+long mh_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) {
+ 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",LOCAL->dir,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 recent, note one less recent message */
+ if (elt->recent) --recent;
+ /* notify upper levels */
+ mail_expunged (stream,i);
+ 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 */
+ /* notify upper level of new mailbox size */
+ mail_exists (stream,stream->nmsgs);
+ mail_recent (stream,recent);
+ }
+ return ret;
+}
+\f
+/* MH mail copy message(s)
+ * Accepts: MAIL stream
+ * sequence
+ * destination mailbox
+ * copy options
+ * Returns: T if copy successful, else NIL
+ */
+
+long mh_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+{
+ FDDATA d;
+ STRING st;
+ MESSAGECACHE *elt;
+ struct stat sbuf;
+ int fd;
+ unsigned long i;
+ char flags[MAILTMPLEN],date[MAILTMPLEN];
+ appenduid_t au = (appenduid_t) mail_parameters (NIL,GET_APPENDUID,NIL);
+ long ret = NIL;
+ /* copy the messages */
+ if ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence))
+ for (i = 1; i <= stream->nmsgs; i++)
+ if ((elt = mail_elt (stream,i))->sequence) {
+ sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->private.uid);
+ if ((fd = open (LOCAL->buf,O_RDONLY,NIL)) < 0) return NIL;
+ fstat (fd,&sbuf); /* get size of message */
+ if (!elt->day) { /* set internaldate to file date if needed */
+ struct tm *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;
+ }
+ d.fd = fd; /* set up file descriptor */
+ d.pos = 0; /* start of file */
+ d.chunk = LOCAL->buf;
+ d.chunksize = CHUNKSIZE;
+ /* kludge; mh_append would just strip CRs */
+ INIT (&st,fd_string,&d,sbuf.st_size);
+ /* init flag string */
+ flags[0] = flags[1] = '\0';
+ if (elt->seen) strcat (flags," \\Seen");
+ if (elt->deleted) strcat (flags," \\Deleted");
+ if (elt->flagged) strcat (flags," \\Flagged");
+ if (elt->answered) strcat (flags," \\Answered");
+ if (elt->draft) strcat (flags," \\Draft");
+ flags[0] = '('; /* open list */
+ strcat (flags,")"); /* close list */
+ mail_date (date,elt); /* generate internal date */
+ if (au) mail_parameters (NIL,SET_APPENDUID,NIL);
+ if ((ret = mail_append_full (NIL,mailbox,flags,date,&st)) &&
+ (options & CP_MOVE)) elt->deleted = T;
+ if (au) mail_parameters (NIL,SET_APPENDUID,(void *) au);
+ close (fd);
+ }
+ if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
+ mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
+ return ret; /* return success */
+}
+\f
+/* MH mail append message from stringstruct
+ * Accepts: MAIL stream
+ * destination mailbox
+ * append callback
+ * data for callback
+ * Returns: T if append successful, else NIL
+ */
+
+long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+{
+ struct direct **names = NIL;
+ int fd;
+ char c,*flags,*date,*s,tmp[MAILTMPLEN];
+ STRING *message;
+ MESSAGECACHE elt;
+ FILE *df;
+ long i,size,last,nfiles;
+ long ret = LONGT;
+ /* default stream to prototype */
+ if (!stream) stream = &mhproto;
+ /* make sure valid mailbox */
+ if (!mh_isvalid (mailbox,tmp,NIL)) switch (errno) {
+ case ENOENT: /* no such file? */
+ if (!((!compare_cstring (mailbox,MHINBOX) ||
+ !compare_cstring (mailbox,"INBOX")) &&
+ (mh_file (tmp,MHINBOX) &&
+ dummy_create_path (stream,strcat (tmp,"/"),
+ get_dir_protection (mailbox))))) {
+ 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 MH-format mailbox name: %.80s",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ default:
+ sprintf (tmp,"Not a MH-format mailbox: %.80s",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ /* get first message */
+ if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
+ if ((nfiles = scandir (tmp,&names,mh_select,mh_numsort)) > 0) {
+ /* largest number */
+ last = atoi (names[nfiles-1]->d_name);
+ for (i = 0; i < nfiles; ++i) /* free directory */
+ fs_give ((void **) &names[i]);
+ }
+ else last = 0; /* no messages here yet */
+ if (s = (void *) names) fs_give ((void **) &s);
+\f
+ mm_critical (stream); /* go critical */
+ do {
+ if (!SIZE (message)) { /* guard against zero-length */
+ mm_log ("Append of zero-length message",ERROR);
+ ret = NIL;
+ break;
+ }
+ if (date) { /* want to preserve date? */
+ /* yes, parse date into an elt */
+ if (!mail_parse_date (&elt,date)) {
+ sprintf (tmp,"Bad date in append: %.80s",date);
+ mm_log (tmp,ERROR);
+ ret = NIL;
+ break;
+ }
+ }
+ mh_file (tmp,mailbox); /* build file name we will use */
+ sprintf (tmp + strlen (tmp),"/%ld",++last);
+ if (((fd = open (tmp,O_WRONLY|O_CREAT|O_EXCL,
+ (long)mail_parameters (NIL,GET_MBXPROTECTION,NIL))) < 0)||
+ !(df = fdopen (fd,"ab"))) {
+ sprintf (tmp,"Can't open append message: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ ret = NIL;
+ break;
+ }
+ /* copy the data w/o CR's */
+ for (size = 0,i = SIZE (message); i && ret; --i)
+ if (((c = SNX (message)) != '\015') && (putc (c,df) == EOF)) ret = NIL;
+ /* close the file */
+ if (!ret || fclose (df)) {
+ unlink (tmp); /* delete message */
+ sprintf (tmp,"Message append failed: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ ret = NIL;
+ }
+ if (ret) { /* set the date for this message */
+ if (date) mh_setdate (tmp,&elt);
+ /* get next message */
+ if (!(*af) (stream,data,&flags,&date,&message)) ret = NIL;
+ }
+ } while (ret && message);
+ mm_nocritical (stream); /* release critical */
+ if (ret && mail_parameters (NIL,GET_APPENDUID,NIL))
+ mm_log ("Can not return meaningful APPENDUID with this mailbox format",
+ WARN);
+ return ret;
+}
+\f
+/* Internal routines */
+
+
+/* MH file name selection test
+ * Accepts: candidate directory entry
+ * Returns: T to use file name, NIL to skip it
+ */
+
+int mh_select (struct direct *name)
+{
+ char c;
+ char *s = name->d_name;
+ while (c = *s++) if (!isdigit (c)) return NIL;
+ return T;
+}
+
+
+/* MH 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 mh_numsort (const void *d1,const void *d2)
+{
+ return atoi ((*(struct direct **) d1)->d_name) -
+ atoi ((*(struct direct **) d2)->d_name);
+}
+
+
+/* MH mail build file name
+ * Accepts: destination string
+ * source
+ * Returns: destination
+ */
+
+char *mh_file (char *dst,char *name)
+{
+ char *s;
+ char *path = mh_path (dst);
+ if (!path) fatal ("No mh path in mh_file()!");
+ /* INBOX becomes "inbox" in the MH path */
+ if (!compare_cstring (name,MHINBOX) || !compare_cstring (name,"INBOX"))
+ sprintf (dst,"%.900s/%.80s",path,MHINBOXDIR);
+ /* #mh names skip past prefix */
+ else if (*name == '#') sprintf (dst,"%.100s/%.900s",path,name + 4);
+ else mailboxfile (dst,name); /* all other names */
+ /* tie off unnecessary trailing / */
+ if ((s = strrchr (dst,'/')) && !s[1] && (s[-1] == '/')) *s = '\0';
+ return dst;
+}
+\f
+/* MH canonicalize name
+ * Accepts: buffer to write name
+ * reference
+ * pattern
+ * Returns: T if success, NIL if failure
+ */
+
+long mh_canonicalize (char *pattern,char *ref,char *pat)
+{
+ unsigned long i;
+ char *s,tmp[MAILTMPLEN];
+ if (ref && *ref) { /* have a reference */
+ strcpy (pattern,ref); /* copy reference to pattern */
+ /* # overrides mailbox field in reference */
+ if (*pat == '#') strcpy (pattern,pat);
+ /* pattern starts, reference ends, with / */
+ else if ((*pat == '/') && (pattern[strlen (pattern) - 1] == '/'))
+ strcat (pattern,pat + 1); /* append, omitting one of the period */
+ else strcat (pattern,pat); /* anything else is just appended */
+ }
+ else strcpy (pattern,pat); /* just have basic name */
+ if (mh_isvalid (pattern,tmp,T)) {
+ /* count wildcards */
+ for (i = 0, s = pattern; *s; *s++) if ((*s == '*') || (*s == '%')) ++i;
+ /* success if not too many */
+ if (i <= MAXWILDCARDS) return LONGT;
+ mm_log ("Excessive wildcards in LIST/LSUB",ERROR);
+ }
+ return NIL;
+}
+\f
+/* Set date for message
+ * Accepts: file name
+ * elt containing date
+ */
+
+void mh_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 1988-2007 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: MH 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: 23 February 1992
+ * Last Edited: 11 October 2007
+ */
+
+
+#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"
+
+
+/* Build parameters */
+
+#define MHINBOX "#mhinbox" /* corresponds to namespace in env_unix.c */
+#define MHINBOXDIR "inbox"
+#define MHPROFILE ".mh_profile"
+#define MHCOMMA ','
+#define MHSEQUENCE ".mh_sequence"
+#define MHSEQUENCES ".mh_sequences"
+#define MHPATH "Mail"
+
+
+/* mh_load_message() flags */
+
+#define MLM_HEADER 0x1 /* load message text */
+#define MLM_TEXT 0x2 /* load message text */
+\f
+/* MH I/O stream local data */
+
+typedef struct mh_local {
+ char *dir; /* spool directory name */
+ unsigned char buf[CHUNKSIZE]; /* temporary buffer */
+ unsigned long cachedtexts; /* total size of all cached texts */
+ time_t scantime; /* last time directory scanned */
+} MHLOCAL;
+
+
+/* Convenient access to local data */
+
+#define LOCAL ((MHLOCAL *) stream->local)
+
+
+/* Function prototypes */
+
+DRIVER *mh_valid (char *name);
+int mh_isvalid (char *name,char *tmp,long synonly);
+int mh_namevalid (char *name);
+char *mh_path (char *tmp);
+void *mh_parameters (long function,void *value);
+long mh_dirfmttest (char *name);
+void mh_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+void mh_list (MAILSTREAM *stream,char *ref,char *pat);
+void mh_lsub (MAILSTREAM *stream,char *ref,char *pat);
+void mh_list_work (MAILSTREAM *stream,char *dir,char *pat,long level);
+long mh_subscribe (MAILSTREAM *stream,char *mailbox);
+long mh_unsubscribe (MAILSTREAM *stream,char *mailbox);
+long mh_create (MAILSTREAM *stream,char *mailbox);
+long mh_delete (MAILSTREAM *stream,char *mailbox);
+long mh_rename (MAILSTREAM *stream,char *old,char *newname);
+MAILSTREAM *mh_open (MAILSTREAM *stream);
+void mh_close (MAILSTREAM *stream,long options);
+void mh_fast (MAILSTREAM *stream,char *sequence,long flags);
+void mh_load_message (MAILSTREAM *stream,unsigned long msgno,long flags);
+char *mh_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags);
+long mh_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
+long mh_ping (MAILSTREAM *stream);
+void mh_check (MAILSTREAM *stream);
+long mh_expunge (MAILSTREAM *stream,char *sequence,long options);
+long mh_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
+ long options);
+long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+
+int mh_select (struct direct *name);
+int mh_numsort (const void *d1,const void *d2);
+char *mh_file (char *dst,char *name);
+long mh_canonicalize (char *pattern,char *ref,char *pat);
+void mh_setdate (char *file,MESSAGECACHE *elt);
+\f
+/* MH mail routines */
+
+
+/* Driver dispatch used by MAIL */
+
+DRIVER mhdriver = {
+ "mh", /* driver name */
+ /* driver flags */
+ DR_MAIL|DR_LOCAL|DR_NOFAST|DR_NAMESPACE|DR_NOSTICKY|DR_DIRFMT,
+ (DRIVER *) NIL, /* next driver */
+ mh_valid, /* mailbox is valid for us */
+ mh_parameters, /* manipulate parameters */
+ mh_scan, /* scan mailboxes */
+ mh_list, /* find mailboxes */
+ mh_lsub, /* find subscribed mailboxes */
+ mh_subscribe, /* subscribe to mailbox */
+ mh_unsubscribe, /* unsubscribe from mailbox */
+ mh_create, /* create mailbox */
+ mh_delete, /* delete mailbox */
+ mh_rename, /* rename mailbox */
+ mail_status_default, /* status of mailbox */
+ mh_open, /* open mailbox */
+ mh_close, /* close mailbox */
+ mh_fast, /* fetch message "fast" attributes */
+ NIL, /* fetch message flags */
+ NIL, /* fetch overview */
+ NIL, /* fetch message envelopes */
+ mh_header, /* fetch message header */
+ mh_text, /* fetch message body */
+ NIL, /* fetch partial message text */
+ NIL, /* unique identifier */
+ NIL, /* message number */
+ NIL, /* modify flags */
+ NIL, /* per-message modify flags */
+ NIL, /* search for message based on criteria */
+ NIL, /* sort messages */
+ NIL, /* thread messages */
+ mh_ping, /* ping mailbox to see if still alive */
+ mh_check, /* check for new messages */
+ mh_expunge, /* expunge deleted messages */
+ mh_copy, /* copy messages to another mailbox */
+ mh_append, /* append string message to mailbox */
+ NIL /* garbage collect stream */
+};
+
+ /* prototype stream */
+MAILSTREAM mhproto = {&mhdriver};
+
+
+static char *mh_profile = NIL; /* holds MH profile */
+static char *mh_pathname = NIL; /* holds MH path name */
+static long mh_once = 0; /* already snarled once */
+static long mh_allow_inbox =NIL;/* allow INBOX as well as MHINBOX */
+\f
+/* MH mail validate mailbox
+ * Accepts: mailbox name
+ * Returns: our driver if name is valid, NIL otherwise
+ */
+
+DRIVER *mh_valid (char *name)
+{
+ char tmp[MAILTMPLEN];
+ return mh_isvalid (name,tmp,T) ? &mhdriver : NIL;
+}
+
+
+/* MH mail test for valid mailbox
+ * Accepts: mailbox name
+ * temporary buffer to use
+ * syntax only test flag
+ * Returns: T if valid, NIL otherwise
+ */
+
+int mh_isvalid (char *name,char *tmp,long synonly)
+{
+ struct stat sbuf;
+ char *s,*t,altname[MAILTMPLEN];
+ unsigned long i;
+ int ret = NIL;
+ errno = NIL; /* zap any error condition */
+ /* mh name? */
+ if ((mh_allow_inbox && !compare_cstring (name,"INBOX")) ||
+ !compare_cstring (name,MHINBOX) ||
+ ((name[0] == '#') && ((name[1] == 'm') || (name[1] == 'M')) &&
+ ((name[2] == 'h') || (name[2] == 'H')) && (name[3] == '/') && name[4])){
+ if (mh_path (tmp)) /* validate name if INBOX or not synonly */
+ ret = (synonly && compare_cstring (name,"INBOX")) ?
+ T : ((stat (mh_file (tmp,name),&sbuf) == 0) &&
+ (sbuf.st_mode & S_IFMT) == S_IFDIR);
+ else if (!mh_once++) { /* only report error once */
+ sprintf (tmp,"%.900s not found, mh format names disabled",mh_profile);
+ mm_log (tmp,WARN);
+ }
+ }
+ /* see if non-NS name within mh hierarchy */
+ else if ((name[0] != '#') && (s = mh_path (tmp)) && (i = strlen (s)) &&
+ (t = mailboxfile (tmp,name)) && !strncmp (t,s,i) &&
+ (tmp[i] == '/') && tmp[i+1]) {
+ sprintf (altname,"#mh%.900s",tmp+i);
+ /* can't do synonly here! */
+ ret = mh_isvalid (altname,tmp,NIL);
+ }
+ else errno = EINVAL; /* bogus name */
+ return ret;
+}
+\f
+/* MH mail test for valid mailbox
+ * Accepts: mailbox name
+ * Returns: T if valid, NIL otherwise
+ */
+
+int mh_namevalid (char *name)
+{
+ char *s;
+ if (name[0] == '#' && (name[1] == 'm' || name[1] == 'M') &&
+ (name[2] == 'h' || name[2] == 'H') && name[3] == '/')
+ for (s = name; s && *s;) { /* make sure no all-digit nodes */
+ 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
+/* Return MH path
+ * Accepts: temporary buffer
+ * Returns: MH path or NIL if MH disabled
+ */
+
+char *mh_path (char *tmp)
+{
+ char *s,*t,*v,*r;
+ int fd;
+ struct stat sbuf;
+ if (!mh_profile) { /* build mh_profile and mh_pathname now */
+ sprintf (tmp,"%s/%s",myhomedir (),MHPROFILE);
+ if ((fd = open (mh_profile = cpystr (tmp),O_RDONLY,NIL)) >= 0) {
+ fstat (fd,&sbuf); /* yes, get size and read file */
+ read (fd,(t = (char *) fs_get (sbuf.st_size + 1)),sbuf.st_size);
+ close (fd); /* don't need the file any more */
+ t[sbuf.st_size] = '\0'; /* tie it off */
+ /* parse profile file */
+ for (s = strtok_r (t,"\r\n",&r); s && *s; s = strtok_r (NIL,"\r\n",&r)) {
+ /* found space in line? */
+ if (v = strpbrk (s," \t")) {
+ *v++ = '\0'; /* tie off, is keyword "Path:"? */
+ if (!compare_cstring (s,"Path:")) {
+ /* skip whitespace */
+ while ((*v == ' ') || (*v == '\t')) ++v;
+ /* absolute path? */
+ if (*v == '/') s = v;
+ else sprintf (s = tmp,"%s/%s",myhomedir (),v);
+ /* copy name */
+ mh_pathname = cpystr (s);
+ break; /* don't need to look at rest of file */
+ }
+ }
+ }
+ fs_give ((void **) &t); /* flush profile text */
+ if (!mh_pathname) { /* default path if not in the profile */
+ sprintf (tmp,"%s/%s",myhomedir (),MHPATH);
+ mh_pathname = cpystr (tmp);
+ }
+ }
+ }
+ return mh_pathname;
+}
+\f
+/* MH manipulate driver parameters
+ * Accepts: function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *mh_parameters (long function,void *value)
+{
+ void *ret = NIL;
+ switch ((int) function) {
+ case GET_INBOXPATH:
+ if (value) ret = mh_file ((char *) value,"INBOX");
+ break;
+ case GET_DIRFMTTEST:
+ ret = (void *) mh_dirfmttest;
+ break;
+ case SET_MHPROFILE:
+ if (mh_profile) fs_give ((void **) &mh_profile);
+ mh_profile = cpystr ((char *) value);
+ case GET_MHPROFILE:
+ ret = (void *) mh_profile;
+ break;
+ case SET_MHPATH:
+ if (mh_pathname) fs_give ((void **) &mh_pathname);
+ mh_pathname = cpystr ((char *) value);
+ case GET_MHPATH:
+ ret = (void *) mh_pathname;
+ break;
+ case SET_MHALLOWINBOX:
+ mh_allow_inbox = value ? T : NIL;
+ case GET_MHALLOWINBOX:
+ ret = (void *) (mh_allow_inbox ? VOIDT : NIL);
+ }
+ return ret;
+}
+
+
+/* MH test for directory format internal node
+ * Accepts: candidate node name
+ * Returns: T if internal name, NIL otherwise
+ */
+
+long mh_dirfmttest (char *s)
+{
+ int c;
+ /* sequence(s) file is an internal name */
+ if (strcmp (s,MHSEQUENCE) && strcmp (s,MHSEQUENCES)) {
+ if (*s == MHCOMMA) ++s; /* else comma + all numeric name */
+ /* success if all-numeric */
+ while (c = *s++) if (!isdigit (c)) return NIL;
+ }
+ return LONGT;
+}
+\f
+/* MH scan mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ * string to scan
+ */
+
+void mh_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
+{
+ char *s,test[MAILTMPLEN],file[MAILTMPLEN];
+ long i = 0;
+ if (!pat || !*pat) { /* empty pattern? */
+ if (mh_canonicalize (test,ref,"*")) {
+ /* tie off name at root */
+ if (s = strchr (test,'/')) *++s = '\0';
+ else test[0] = '\0';
+ mm_list (stream,'/',test,LATT_NOSELECT);
+ }
+ }
+ /* get canonical form of name */
+ else if (mh_canonicalize (test,ref,pat)) {
+ if (contents) { /* maybe I'll implement this someday */
+ mm_log ("Scan not valid for mh mailboxes",ERROR);
+ return;
+ }
+ if (test[3] == '/') { /* looking down levels? */
+ /* yes, found any wildcards? */
+ if (s = strpbrk (test,"%*")) {
+ /* yes, copy name up to that point */
+ strncpy (file,test+4,i = s - (test+4));
+ file[i] = '\0'; /* tie off */
+ }
+ else strcpy (file,test+4);/* use just that name then */
+ /* find directory name */
+ if (s = strrchr (file,'/')) {
+ *s = '\0'; /* found, tie off at that point */
+ s = file;
+ }
+ /* do the work */
+ mh_list_work (stream,s,test,0);
+ }
+ /* always an INBOX */
+ if (!compare_cstring (test,MHINBOX))
+ mm_list (stream,NIL,MHINBOX,LATT_NOINFERIORS);
+ }
+}
+\f
+/* MH list mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mh_list (MAILSTREAM *stream,char *ref,char *pat)
+{
+ mh_scan (stream,ref,pat,NIL);
+}
+
+
+/* MH list subscribed mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mh_lsub (MAILSTREAM *stream,char *ref,char *pat)
+{
+ void *sdb = NIL;
+ char *s,test[MAILTMPLEN];
+ /* get canonical form of name */
+ if (mh_canonicalize (test,ref,pat) && (s = sm_read (&sdb))) {
+ do if (pmatch_full (s,test,'/')) mm_lsub (stream,'/',s,NIL);
+ while (s = sm_read (&sdb)); /* until no more subscriptions */
+ }
+}
+\f
+/* MH list mailboxes worker routine
+ * Accepts: mail stream
+ * directory name to search
+ * search pattern
+ * search level
+ */
+
+void mh_list_work (MAILSTREAM *stream,char *dir,char *pat,long level)
+{
+ DIR *dp;
+ struct direct *d;
+ struct stat sbuf;
+ char *cp,*np,curdir[MAILTMPLEN],name[MAILTMPLEN];
+ /* build MH name to search */
+ if (dir) sprintf (name,"#mh/%s/",dir);
+ else strcpy (name,"#mh/");
+ /* make directory name, punt if bogus */
+ if (!mh_file (curdir,name)) return;
+ cp = curdir + strlen (curdir);/* end of directory name */
+ np = name + strlen (name); /* end of MH name */
+ if (dp = opendir (curdir)) { /* open directory */
+ while (d = readdir (dp)) /* scan, ignore . and numeric names */
+ if ((d->d_name[0] != '.') && !mh_select (d)) {
+ strcpy (cp,d->d_name); /* make directory name */
+ if (!stat (curdir,&sbuf) && ((sbuf.st_mode & S_IFMT) == S_IFDIR)) {
+ strcpy (np,d->d_name);/* make mh name of directory name */
+ /* yes, an MH name if full match */
+ if (pmatch_full (name,pat,'/')) mm_list (stream,'/',name,NIL);
+ /* check if should recurse */
+ if (dmatch (name,pat,'/') &&
+ (level < (long) mail_parameters (NIL,GET_LISTMAXLEVEL,NIL)))
+ mh_list_work (stream,name+4,pat,level+1);
+ }
+ }
+ closedir (dp); /* all done, flush directory */
+ }
+}
+\f
+/* MH mail subscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to add to subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_subscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_subscribe (mailbox);
+}
+
+
+/* MH mail unsubscribe to mailbox
+ * Accepts: mail stream
+ * mailbox to delete from subscription list
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_unsubscribe (MAILSTREAM *stream,char *mailbox)
+{
+ return sm_unsubscribe (mailbox);
+}
+\f
+/* MH mail create mailbox
+ * Accepts: mail stream
+ * mailbox name to create
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_create (MAILSTREAM *stream,char *mailbox)
+{
+ char tmp[MAILTMPLEN];
+ if (!mh_namevalid (mailbox)) /* validate name */
+ sprintf (tmp,"Can't create mailbox %.80s: invalid MH-format name",mailbox);
+ /* must not already exist */
+ else if (mh_isvalid (mailbox,tmp,NIL))
+ sprintf (tmp,"Can't create mailbox %.80s: mailbox already exists",mailbox);
+ else if (!mh_path (tmp)) return NIL;
+ /* try to make it */
+ else if (!(mh_file (tmp,mailbox) &&
+ dummy_create_path (stream,strcat (tmp,"/"),
+ get_dir_protection (mailbox))))
+ sprintf (tmp,"Can't create mailbox %.80s: %s",mailbox,strerror (errno));
+ else return LONGT; /* success */
+ mm_log (tmp,ERROR);
+ return NIL;
+}
+\f
+/* MH mail delete mailbox
+ * mailbox name to delete
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_delete (MAILSTREAM *stream,char *mailbox)
+{
+ DIR *dirp;
+ struct direct *d;
+ int i;
+ char tmp[MAILTMPLEN];
+ /* is mailbox valid? */
+ if (!mh_isvalid (mailbox,tmp,NIL)) {
+ sprintf (tmp,"Can't delete mailbox %.80s: no such mailbox",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ /* get name of directory */
+ i = strlen (mh_file (tmp,mailbox));
+ if (dirp = opendir (tmp)) { /* open directory */
+ tmp[i++] = '/'; /* now apply trailing delimiter */
+ /* massacre all mh owned files */
+ while (d = readdir (dirp)) if (mh_dirfmttest (d->d_name)) {
+ strcpy (tmp + i,d->d_name);
+ unlink (tmp); /* sayonara */
+ }
+ closedir (dirp); /* flush directory */
+ }
+ /* try to remove the directory */
+ if (rmdir (mh_file (tmp,mailbox))) {
+ sprintf (tmp,"Can't delete mailbox %.80s: %s",mailbox,strerror (errno));
+ mm_log (tmp,WARN);
+ }
+ return T; /* return success */
+}
+\f
+/* MH mail rename mailbox
+ * Accepts: MH mail stream
+ * old mailbox name
+ * new mailbox name
+ * Returns: T on success, NIL on failure
+ */
+
+long mh_rename (MAILSTREAM *stream,char *old,char *newname)
+{
+ char c,*s,tmp[MAILTMPLEN],tmp1[MAILTMPLEN];
+ struct stat sbuf;
+ /* old mailbox name must be valid */
+ if (!mh_isvalid (old,tmp,NIL))
+ sprintf (tmp,"Can't rename mailbox %.80s: no such mailbox",old);
+ else if (!mh_namevalid (newname))
+ sprintf (tmp,"Can't rename to mailbox %.80s: invalid MH-format name",
+ newname);
+ /* new mailbox name must not be valid */
+ else if (mh_isvalid (newname,tmp,NIL))
+ sprintf (tmp,"Can't rename to mailbox %.80s: destination already exists",
+ newname);
+ /* success if can rename the directory */
+ else { /* found superior to destination name? */
+ if (s = strrchr (mh_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 (mh_file (tmp,old),tmp1)) return T;
+ sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %s",
+ old,newname,strerror (errno));
+ }
+ mm_log (tmp,ERROR); /* something failed */
+ return NIL;
+}
+\f
+/* MH mail open
+ * Accepts: stream to open
+ * Returns: stream on success, NIL on failure
+ */
+
+MAILSTREAM *mh_open (MAILSTREAM *stream)
+{
+ char tmp[MAILTMPLEN];
+ if (!stream) return &mhproto; /* return prototype for OP_PROTOTYPE call */
+ if (stream->local) fatal ("mh recycle stream");
+ stream->local = fs_get (sizeof (MHLOCAL));
+ /* INBOXness is one of the following:
+ * #mhinbox (case-independent)
+ * #mh/inbox (mh is case-independent, inbox is case-dependent)
+ * INBOX (case-independent
+ */
+ stream->inbox = /* note if an INBOX or not */
+ (!compare_cstring (stream->mailbox,MHINBOX) ||
+ ((stream->mailbox[0] == '#') &&
+ ((stream->mailbox[1] == 'm') || (stream->mailbox[1] == 'M')) &&
+ ((stream->mailbox[2] == 'h') || (stream->mailbox[2] == 'H')) &&
+ (stream->mailbox[3] == '/') && !strcmp (stream->mailbox+4,MHINBOXDIR)) ||
+ !compare_cstring (stream->mailbox,"INBOX")) ? T : NIL;
+ mh_file (tmp,stream->mailbox);/* get directory name */
+ LOCAL->dir = cpystr (tmp); /* copy directory name for later */
+ LOCAL->scantime = 0; /* not scanned yet */
+ LOCAL->cachedtexts = 0; /* no cached texts */
+ stream->sequence++; /* bump sequence number */
+ /* parse mailbox */
+ stream->nmsgs = stream->recent = 0;
+ if (!mh_ping (stream)) return NIL;
+ if (!(stream->nmsgs || stream->silent))
+ mm_log ("Mailbox is empty",(long) NIL);
+ return stream; /* return stream to caller */
+}
+\f
+/* MH mail close
+ * Accepts: MAIL stream
+ * close options
+ */
+
+void mh_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) mh_expunge (stream,NIL,NIL);
+ if (LOCAL->dir) fs_give ((void **) &LOCAL->dir);
+ /* nuke the local data */
+ fs_give ((void **) &stream->local);
+ stream->dtb = NIL; /* log out the DTB */
+ stream->silent = silent; /* reset silent state */
+ }
+}
+
+
+/* MH mail fetch fast information
+ * Accepts: MAIL stream
+ * sequence
+ * option flags
+ */
+
+void mh_fast (MAILSTREAM *stream,char *sequence,long flags)
+{
+ MESSAGECACHE *elt;
+ unsigned long i;
+ /* set up metadata for all messages */
+ 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 &&
+ !(elt->day && elt->rfc822_size)) mh_load_message (stream,i,NIL);
+}
+\f
+/* MH load message into cache
+ * Accepts: MAIL stream
+ * message #
+ * option flags
+ */
+
+void mh_load_message (MAILSTREAM *stream,unsigned long msgno,long flags)
+{
+ unsigned long i,j,nlseen;
+ int fd;
+ unsigned char c,*t;
+ struct stat sbuf;
+ MESSAGECACHE *elt;
+ FDDATA d;
+ STRING bs;
+ elt = mail_elt (stream,msgno);/* get elt */
+ /* build message file name */
+ sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->private.uid);
+ /* anything we need not currently cached? */
+ if ((!elt->day || !elt->rfc822_size ||
+ ((flags & MLM_HEADER) && !elt->private.msg.header.text.data) ||
+ ((flags & MLM_TEXT) && !elt->private.msg.text.text.data)) &&
+ ((fd = open (LOCAL->buf,O_RDONLY,NIL)) >= 0)) {
+ fstat (fd,&sbuf); /* get file metadata */
+ d.fd = fd; /* set up file descriptor */
+ d.pos = 0; /* start of file */
+ d.chunk = LOCAL->buf;
+ d.chunksize = CHUNKSIZE;
+ INIT (&bs,fd_string,&d,sbuf.st_size);
+ if (!elt->day) { /* set internaldate to file date */
+ struct tm *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;
+ }
+\f
+ if (!elt->rfc822_size) { /* know message size yet? */
+ for (i = 0, j = SIZE (&bs), nlseen = 0; j--; ) switch (SNX (&bs)) {
+ case '\015': /* unlikely carriage return */
+ if (!j || (CHR (&bs) != '\012')) {
+ i++; /* ugh, raw CR */
+ nlseen = NIL;
+ break;
+ }
+ SNX (&bs); /* eat the line feed, drop in */
+ --j;
+ case '\012': /* line feed? */
+ i += 2; /* count a CRLF */
+ /* header size known yet? */
+ if (!elt->private.msg.header.text.size && nlseen) {
+ /* note position in file */
+ elt->private.special.text.size = GETPOS (&bs);
+ /* and CRLF-adjusted size */
+ elt->private.msg.header.text.size = i;
+ }
+ nlseen = T; /* note newline seen */
+ break;
+ default: /* ordinary chararacter */
+ i++;
+ nlseen = NIL;
+ break;
+ }
+ SETPOS (&bs,0); /* restore old position */
+ elt->rfc822_size = i; /* note that we have size now */
+ /* header is entire message if no delimiter */
+ if (!elt->private.msg.header.text.size)
+ elt->private.msg.header.text.size = elt->rfc822_size;
+ /* text is remainder of message */
+ elt->private.msg.text.text.size =
+ elt->rfc822_size - elt->private.msg.header.text.size;
+ }
+ /* need to load cache with message data? */
+ if (((flags & MLM_HEADER) && !elt->private.msg.header.text.data) ||
+ ((flags & MLM_TEXT) && !elt->private.msg.text.text.data)) {
+ /* purge cache if too big */
+ if (LOCAL->cachedtexts > max (stream->nmsgs * 4096,2097152)) {
+ /* just can't keep that much */
+ mail_gc (stream,GC_TEXTS);
+ LOCAL->cachedtexts = 0;
+ }
+\f
+ if ((flags & MLM_HEADER) && !elt->private.msg.header.text.data) {
+ t = elt->private.msg.header.text.data =
+ (unsigned char *) fs_get (elt->private.msg.header.text.size + 1);
+ LOCAL->cachedtexts += elt->private.msg.header.text.size;
+ /* read in message header */
+ for (i = 0; i < elt->private.msg.header.text.size; i++)
+ switch (c = SNX (&bs)) {
+ case '\015': /* unlikely carriage return */
+ *t++ = c;
+ if ((CHR (&bs) == '\012')) {
+ *t++ = SNX (&bs);
+ i++;
+ }
+ break;
+ case '\012': /* line feed? */
+ *t++ = '\015';
+ i++;
+ default:
+ *t++ = c;
+ break;
+ }
+ *t = '\0'; /* tie off string */
+ if ((t - elt->private.msg.header.text.data) !=
+ elt->private.msg.header.text.size) fatal ("mh hdr size mismatch");
+ }
+ if ((flags & MLM_TEXT) && !elt->private.msg.text.text.data) {
+ t = elt->private.msg.text.text.data =
+ (unsigned char *) fs_get (elt->private.msg.text.text.size + 1);
+ SETPOS (&bs,elt->private.special.text.size);
+ LOCAL->cachedtexts += elt->private.msg.text.text.size;
+ /* read in message text */
+ for (i = 0; i < elt->private.msg.text.text.size; i++)
+ switch (c = SNX (&bs)) {
+ case '\015': /* unlikely carriage return */
+ *t++ = c;
+ if ((CHR (&bs) == '\012')) {
+ *t++ = SNX (&bs);
+ i++;
+ }
+ break;
+ case '\012': /* line feed? */
+ *t++ = '\015';
+ i++;
+ default:
+ *t++ = c;
+ break;
+ }
+ *t = '\0'; /* tie off string */
+ if ((t - elt->private.msg.text.text.data) !=
+ elt->private.msg.text.text.size) fatal ("mh txt size mismatch");
+ }
+ }
+ close (fd); /* flush message file */
+ }
+}
+\f
+/* MH 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 *mh_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags)
+{
+ 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)
+ mh_load_message (stream,msgno,MLM_HEADER);
+ *length = elt->private.msg.header.text.size;
+ return (char *) elt->private.msg.header.text.data;
+}
+
+
+/* MH 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 mh_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
+{
+ MESSAGECACHE *elt;
+ /* UID call "impossible" */
+ if (flags & FT_UID) return NIL;
+ elt = mail_elt (stream,msgno);/* get elt */
+ /* snarf message if don't have it yet */
+ if (!elt->private.msg.text.text.data) {
+ mh_load_message (stream,msgno,MLM_TEXT);
+ if (!elt->private.msg.text.text.data) return NIL;
+ }
+ if (!(flags & FT_PEEK)) { /* mark as seen */
+ mail_elt (stream,msgno)->seen = T;
+ mm_flags (stream,msgno);
+ }
+ INIT (bs,mail_string,elt->private.msg.text.text.data,
+ elt->private.msg.text.text.size);
+ return T;
+}
+\f
+/* MH mail ping mailbox
+ * Accepts: MAIL stream
+ * Returns: T if stream alive, else NIL
+ */
+
+long mh_ping (MAILSTREAM *stream)
+{
+ MAILSTREAM *sysibx = NIL;
+ MESSAGECACHE *elt,*selt;
+ struct stat sbuf;
+ char *s,tmp[MAILTMPLEN];
+ int fd;
+ unsigned long i,j,r;
+ unsigned long old = stream->uid_last;
+ long nmsgs = stream->nmsgs;
+ long recent = stream->recent;
+ int silent = stream->silent;
+ if (stat (LOCAL->dir,&sbuf)) {/* directory exists? */
+ if (stream->inbox && /* no, create if INBOX */
+ dummy_create_path (stream,strcat (mh_file (tmp,MHINBOX),"/"),
+ get_dir_protection ("INBOX"))) return T;
+ sprintf (tmp,"Can't open mailbox %.80s: no such mailbox",stream->mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ stream->silent = T; /* don't pass up mm_exists() events yet */
+ if (sbuf.st_ctime != LOCAL->scantime) {
+ struct direct **names = NIL;
+ long nfiles = scandir (LOCAL->dir,&names,mh_select,mh_numsort);
+ if (nfiles < 0) nfiles = 0; /* in case error */
+ /* 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) {
+ 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 */
+ }
+ else { /* see if already read */
+ sprintf (tmp,"%s/%s",LOCAL->dir,names[i]->d_name);
+ if (!stat (tmp,&sbuf) && (sbuf.st_atime > sbuf.st_mtime))
+ elt->seen = T;
+ }
+ }
+ fs_give ((void **) &names[i]);
+ }
+ /* free directory */
+ if (s = (void *) names) fs_give ((void **) &s);
+ }
+\f
+ /* if INBOX, snarf from system INBOX */
+ if (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",LOCAL->dir,++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_INTERNAL)) &&
+ (write (fd,s,j) == j) &&
+ (s = mail_fetchtext_full (sysibx,i,&j,FT_INTERNAL|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;
+ mh_setdate (LOCAL->buf,elt);
+ sprintf (tmp,"%lu",i);/* delete it from the sysinbox */
+ mail_flag (sysibx,tmp,"\\Deleted",ST_SET);
+ }
+\f
+ 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 MH mailbox failed: %.80s",
+ s,strerror (errno));
+ mm_log (tmp,ERROR);
+ r = 0; /* stop the snarf in its tracks */
+ }
+ }
+ /* update scan time */
+ if (!stat (LOCAL->dir,&sbuf)) LOCAL->scantime = sbuf.st_ctime;
+ mail_expunge (sysibx); /* now expunge all those messages */
+ }
+ if (sysibx) mail_close (sysibx);
+ mm_nocritical (stream); /* release critical */
+ }
+ 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
+/* MH mail check mailbox
+ * Accepts: MAIL stream
+ */
+
+void mh_check (MAILSTREAM *stream)
+{
+ /* Perhaps in the future this will preserve flags */
+ if (mh_ping (stream)) mm_log ("Check completed",(long) NIL);
+}
+
+
+/* MH mail expunge mailbox
+ * Accepts: MAIL stream
+ * sequence to expunge if non-NIL
+ * expunge options
+ * Returns: T, always
+ */
+
+long mh_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) {
+ 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",LOCAL->dir,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 recent, note one less recent message */
+ if (elt->recent) --recent;
+ /* notify upper levels */
+ mail_expunged (stream,i);
+ 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 */
+ /* notify upper level of new mailbox size */
+ mail_exists (stream,stream->nmsgs);
+ mail_recent (stream,recent);
+ }
+ return ret;
+}
+\f
+/* MH mail copy message(s)
+ * Accepts: MAIL stream
+ * sequence
+ * destination mailbox
+ * copy options
+ * Returns: T if copy successful, else NIL
+ */
+
+long mh_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+{
+ FDDATA d;
+ STRING st;
+ MESSAGECACHE *elt;
+ struct stat sbuf;
+ int fd;
+ unsigned long i;
+ char flags[MAILTMPLEN],date[MAILTMPLEN];
+ appenduid_t au = (appenduid_t) mail_parameters (NIL,GET_APPENDUID,NIL);
+ long ret = NIL;
+ /* copy the messages */
+ if ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence))
+ for (i = 1; i <= stream->nmsgs; i++)
+ if ((elt = mail_elt (stream,i))->sequence) {
+ sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->private.uid);
+ if ((fd = open (LOCAL->buf,O_RDONLY,NIL)) < 0) return NIL;
+ fstat (fd,&sbuf); /* get size of message */
+ if (!elt->day) { /* set internaldate to file date if needed */
+ struct tm *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;
+ }
+ d.fd = fd; /* set up file descriptor */
+ d.pos = 0; /* start of file */
+ d.chunk = LOCAL->buf;
+ d.chunksize = CHUNKSIZE;
+ /* kludge; mh_append would just strip CRs */
+ INIT (&st,fd_string,&d,sbuf.st_size);
+ /* init flag string */
+ flags[0] = flags[1] = '\0';
+ if (elt->seen) strcat (flags," \\Seen");
+ if (elt->deleted) strcat (flags," \\Deleted");
+ if (elt->flagged) strcat (flags," \\Flagged");
+ if (elt->answered) strcat (flags," \\Answered");
+ if (elt->draft) strcat (flags," \\Draft");
+ flags[0] = '('; /* open list */
+ strcat (flags,")"); /* close list */
+ mail_date (date,elt); /* generate internal date */
+ if (au) mail_parameters (NIL,SET_APPENDUID,NIL);
+ if ((ret = mail_append_full (NIL,mailbox,flags,date,&st)) &&
+ (options & CP_MOVE)) elt->deleted = T;
+ if (au) mail_parameters (NIL,SET_APPENDUID,(void *) au);
+ close (fd);
+ }
+ if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
+ mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
+ return ret; /* return success */
+}
+\f
+/* MH mail append message from stringstruct
+ * Accepts: MAIL stream
+ * destination mailbox
+ * append callback
+ * data for callback
+ * Returns: T if append successful, else NIL
+ */
+
+long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+{
+ struct direct **names = NIL;
+ int fd;
+ char c,*flags,*date,*s,tmp[MAILTMPLEN];
+ STRING *message;
+ MESSAGECACHE elt;
+ FILE *df;
+ long i,size,last,nfiles;
+ long ret = LONGT;
+ /* default stream to prototype */
+ if (!stream) stream = &mhproto;
+ /* make sure valid mailbox */
+ if (!mh_isvalid (mailbox,tmp,NIL)) switch (errno) {
+ case ENOENT: /* no such file? */
+ if (!((!compare_cstring (mailbox,MHINBOX) ||
+ !compare_cstring (mailbox,"INBOX")) &&
+ (mh_file (tmp,MHINBOX) &&
+ dummy_create_path (stream,strcat (tmp,"/"),
+ get_dir_protection (mailbox))))) {
+ 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 MH-format mailbox name: %.80s",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ default:
+ sprintf (tmp,"Not a MH-format mailbox: %.80s",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ /* get first message */
+ if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
+ if ((nfiles = scandir (tmp,&names,mh_select,mh_numsort)) > 0) {
+ /* largest number */
+ last = atoi (names[nfiles-1]->d_name);
+ for (i = 0; i < nfiles; ++i) /* free directory */
+ fs_give ((void **) &names[i]);
+ }
+ else last = 0; /* no messages here yet */
+ if (s = (void *) names) fs_give ((void **) &s);
+\f
+ mm_critical (stream); /* go critical */
+ do {
+ if (!SIZE (message)) { /* guard against zero-length */
+ mm_log ("Append of zero-length message",ERROR);
+ ret = NIL;
+ break;
+ }
+ if (date) { /* want to preserve date? */
+ /* yes, parse date into an elt */
+ if (!mail_parse_date (&elt,date)) {
+ sprintf (tmp,"Bad date in append: %.80s",date);
+ mm_log (tmp,ERROR);
+ ret = NIL;
+ break;
+ }
+ }
+ mh_file (tmp,mailbox); /* build file name we will use */
+ sprintf (tmp + strlen (tmp),"/%ld",++last);
+ if (((fd = open (tmp,O_WRONLY|O_CREAT|O_EXCL,
+ (long)mail_parameters (NIL,GET_MBXPROTECTION,NIL))) < 0)||
+ !(df = fdopen (fd,"ab"))) {
+ sprintf (tmp,"Can't open append message: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ ret = NIL;
+ break;
+ }
+ /* copy the data w/o CR's */
+ for (size = 0,i = SIZE (message); i && ret; --i)
+ if (((c = SNX (message)) != '\015') && (putc (c,df) == EOF)) ret = NIL;
+ /* close the file */
+ if (!ret || fclose (df)) {
+ unlink (tmp); /* delete message */
+ sprintf (tmp,"Message append failed: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ ret = NIL;
+ }
+ if (ret) { /* set the date for this message */
+ if (date) mh_setdate (tmp,&elt);
+ /* get next message */
+ if (!(*af) (stream,data,&flags,&date,&message)) ret = NIL;
+ }
+ } while (ret && message);
+ mm_nocritical (stream); /* release critical */
+ if (ret && mail_parameters (NIL,GET_APPENDUID,NIL))
+ mm_log ("Can not return meaningful APPENDUID with this mailbox format",
+ WARN);
+ return ret;
+}
+\f
+/* Internal routines */
+
+
+/* MH file name selection test
+ * Accepts: candidate directory entry
+ * Returns: T to use file name, NIL to skip it
+ */
+
+int mh_select (struct direct *name)
+{
+ char c;
+ char *s = name->d_name;
+ while (c = *s++) if (!isdigit (c)) return NIL;
+ return T;
+}
+
+
+/* MH 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 mh_numsort (const void *d1,const void *d2)
+{
+ return atoi ((*(struct direct **) d1)->d_name) -
+ atoi ((*(struct direct **) d2)->d_name);
+}
+
+
+/* MH mail build file name
+ * Accepts: destination string
+ * source
+ * Returns: destination
+ */
+
+char *mh_file (char *dst,char *name)
+{
+ char *s;
+ char *path = mh_path (dst);
+ if (!path) fatal ("No mh path in mh_file()!");
+ /* INBOX becomes "inbox" in the MH path */
+ if (!compare_cstring (name,MHINBOX) || !compare_cstring (name,"INBOX"))
+ sprintf (dst,"%.900s/%.80s",path,MHINBOXDIR);
+ /* #mh names skip past prefix */
+ else if (*name == '#') sprintf (dst,"%.100s/%.900s",path,name + 4);
+ else mailboxfile (dst,name); /* all other names */
+ /* tie off unnecessary trailing / */
+ if ((s = strrchr (dst,'/')) && !s[1] && (s[-1] == '/')) *s = '\0';
+ return dst;
+}
+\f
+/* MH canonicalize name
+ * Accepts: buffer to write name
+ * reference
+ * pattern
+ * Returns: T if success, NIL if failure
+ */
+
+long mh_canonicalize (char *pattern,char *ref,char *pat)
+{
+ unsigned long i;
+ char *s,tmp[MAILTMPLEN];
+ if (ref && *ref) { /* have a reference */
+ strcpy (pattern,ref); /* copy reference to pattern */
+ /* # overrides mailbox field in reference */
+ if (*pat == '#') strcpy (pattern,pat);
+ /* pattern starts, reference ends, with / */
+ else if ((*pat == '/') && (pattern[strlen (pattern) - 1] == '/'))
+ strcat (pattern,pat + 1); /* append, omitting one of the period */
+ else strcat (pattern,pat); /* anything else is just appended */
+ }
+ else strcpy (pattern,pat); /* just have basic name */
+ if (mh_isvalid (pattern,tmp,T)) {
+ /* count wildcards */
+ for (i = 0, s = pattern; *s; *s++) if ((*s == '*') || (*s == '%')) ++i;
+ /* success if not too many */
+ if (i <= MAXWILDCARDS) return LONGT;
+ mm_log ("Excessive wildcards in LIST/LSUB",ERROR);
+ }
+ return NIL;
+}
+\f
+/* Set date for message
+ * Accepts: file name
+ * elt containing date
+ */
+
+void mh_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