--- /dev/null
+/* ========================================================================
+ * Copyright 1988-2006 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: MTX mail routines
+ *
+ * Author: Mark Crispin
+ * Networks and Distributed Computing
+ * Computing & Communications
+ * University of Washington
+ * Administration Building, AG-44
+ * Seattle, WA 98195
+ * Internet: MRC@CAC.Washington.EDU
+ *
+ * Date: 24 June 1992
+ * Last Edited: 30 August 2006
+ */
+
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include "mail.h"
+#include "osdep.h"
+#include <time.h>
+#include <sys\stat.h>
+#include <dos.h>
+#include "rfc822.h"
+#include "dummy.h"
+#include "misc.h"
+#include "fdstring.h"
+\f
+/* MTX I/O stream local data */
+
+typedef struct mtx_local {
+ int fd; /* file descriptor for I/O */
+ off_t filesize; /* file size parsed */
+ unsigned char *buf; /* temporary buffer */
+} MTXLOCAL;
+
+
+/* Drive-dependent data passed to init method */
+
+typedef struct mtx_data {
+ int fd; /* file data */
+ unsigned long pos; /* initial position */
+} MTXDATA;
+
+
+/* Convenient access to local data */
+
+#define LOCAL ((MTXLOCAL *) stream->local)
+
+
+/* Function prototypes */
+
+DRIVER *mtx_valid (char *name);
+long mtx_isvalid (char *name,char *tmp);
+void *mtx_parameters (long function,void *value);
+void mtx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+void mtx_list (MAILSTREAM *stream,char *ref,char *pat);
+void mtx_lsub (MAILSTREAM *stream,char *ref,char *pat);
+long mtx_create (MAILSTREAM *stream,char *mailbox);
+long mtx_delete (MAILSTREAM *stream,char *mailbox);
+long mtx_rename (MAILSTREAM *stream,char *old,char *newname);
+MAILSTREAM *mtx_open (MAILSTREAM *stream);
+void mtx_close (MAILSTREAM *stream,long options);
+char *mtx_header (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *length,long flags);
+long mtx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
+void mtx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt);
+long mtx_ping (MAILSTREAM *stream);
+void mtx_check (MAILSTREAM *stream);
+long mtx_expunge (MAILSTREAM *stream,char *sequence,long options);
+long mtx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
+long mtx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+
+char *mtx_file (char *dst,char *name);
+long mtx_badname (char *tmp,char *s);
+long mtx_parse (MAILSTREAM *stream);
+void mtx_update_status (MAILSTREAM *stream,unsigned long msgno);
+unsigned long mtx_hdrpos (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *size);
+\f
+/* MTX mail routines */
+
+
+/* Driver dispatch used by MAIL */
+
+DRIVER mtxdriver = {
+ "mtx", /* driver name */
+ /* driver flags */
+ DR_LOCAL|DR_MAIL|DR_LOWMEM|DR_CRLF|DR_NOSTICKY,
+ (DRIVER *) NIL, /* next driver */
+ mtx_valid, /* mailbox is valid for us */
+ mtx_parameters, /* manipulate parameters */
+ mtx_scan, /* scan mailboxes */
+ mtx_list, /* list mailboxes */
+ mtx_lsub, /* list subscribed mailboxes */
+ NIL, /* subscribe to mailbox */
+ NIL, /* unsubscribe from mailbox */
+ mtx_create, /* create mailbox */
+ mtx_delete, /* delete mailbox */
+ mtx_rename, /* rename mailbox */
+ mail_status_default, /* status of mailbox */
+ mtx_open, /* open mailbox */
+ mtx_close, /* close mailbox */
+ NIL, /* fetch message "fast" attributes */
+ NIL, /* fetch message flags */
+ NIL, /* fetch overview */
+ NIL, /* fetch message envelopes */
+ mtx_header, /* fetch message header */
+ mtx_text, /* fetch message body */
+ NIL, /* fetch partial message text */
+ NIL, /* unique identifier */
+ NIL, /* message number */
+ NIL, /* modify flags */
+ mtx_flagmsg, /* per-message modify flags */
+ NIL, /* search for message based on criteria */
+ NIL, /* sort messages */
+ NIL, /* thread messages */
+ mtx_ping, /* ping mailbox to see if still alive */
+ mtx_check, /* check for new messages */
+ mtx_expunge, /* expunge deleted messages */
+ mtx_copy, /* copy messages to another mailbox */
+ mtx_append, /* append string message to mailbox */
+ NIL /* garbage collect stream */
+};
+
+ /* prototype stream */
+MAILSTREAM mtxproto = {&mtxdriver};
+\f
+/* MTX mail validate mailbox
+ * Accepts: mailbox name
+ * Returns: our driver if name is valid, NIL otherwise
+ */
+
+DRIVER *mtx_valid (char *name)
+{
+ char tmp[MAILTMPLEN];
+ return mtx_isvalid (name,tmp) ? &mtxdriver : (DRIVER *) NIL;
+}
+
+
+/* MTX mail test for valid mailbox
+ * Accepts: mailbox name
+ * Returns: T if valid, NIL otherwise
+ */
+
+long mtx_isvalid (char *name,char *tmp)
+{
+ int fd;
+ long ret = NIL;
+ char *s;
+ struct stat sbuf;
+ errno = EINVAL; /* assume invalid argument */
+ /* if file, get its status */
+ if ((*name != '{') && mailboxfile (tmp,name) && !stat (tmp,&sbuf)) {
+ if (!sbuf.st_size)errno = 0;/* empty file */
+ else if ((fd = open (tmp,O_BINARY|O_RDONLY,NIL)) >= 0) {
+ memset (tmp,'\0',MAILTMPLEN);
+ if ((read (fd,tmp,64) >= 0) && (s = strchr (tmp,'\015')) &&
+ (s[1] == '\012')) { /* valid format? */
+ *s = '\0'; /* tie off header */
+ /* must begin with dd-mmm-yy" */
+ ret = (((tmp[2] == '-' && tmp[6] == '-') ||
+ (tmp[1] == '-' && tmp[5] == '-')) &&
+ (s = strchr (tmp+18,',')) && strchr (s+2,';')) ? T : NIL;
+ }
+ else errno = -1; /* bogus format */
+ close (fd); /* close the file */
+ }
+ }
+ /* in case INBOX but not mtx format */
+ else if ((errno == ENOENT) && ((name[0] == 'I') || (name[0] == 'i')) &&
+ ((name[1] == 'N') || (name[1] == 'n')) &&
+ ((name[2] == 'B') || (name[2] == 'b')) &&
+ ((name[3] == 'O') || (name[3] == 'o')) &&
+ ((name[4] == 'X') || (name[4] == 'x')) && !name[5]) errno = -1;
+ return ret; /* return what we should */
+}
+
+
+/* MTX manipulate driver parameters
+ * Accepts: function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *mtx_parameters (long function,void *value)
+{
+ return NIL;
+}
+\f
+/* MTX mail scan mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ * string to scan
+ */
+
+void mtx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
+{
+ if (stream) dummy_scan (NIL,ref,pat,contents);
+}
+
+
+/* MTX mail list mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mtx_list (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_list (stream,ref,pat);
+}
+
+
+/* MTX mail list subscribed mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void mtx_lsub (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_lsub (stream,ref,pat);
+}
+\f
+/* MTX mail create mailbox
+ * Accepts: MAIL stream
+ * mailbox name to create
+ * Returns: T on success, NIL on failure
+ */
+
+long mtx_create (MAILSTREAM *stream,char *mailbox)
+{
+ return dummy_create (stream,mailbox);
+}
+
+
+/* MTX mail delete mailbox
+ * Accepts: MAIL stream
+ * mailbox name to delete
+ * Returns: T on success, NIL on failure
+ */
+
+long mtx_delete (MAILSTREAM *stream,char *mailbox)
+{
+ return dummy_delete (stream,mailbox);
+}
+
+
+/* MTX mail rename mailbox
+ * Accepts: MAIL stream
+ * old mailbox name
+ * new mailbox name (or NIL for delete)
+ * Returns: T on success, NIL on failure
+ */
+
+long mtx_rename (MAILSTREAM *stream,char *old,char *newname)
+{
+ return dummy_rename (stream,old,newname);
+}
+\f
+/* MTX mail open
+ * Accepts: stream to open
+ * Returns: stream on success, NIL on failure
+ */
+
+MAILSTREAM *mtx_open (MAILSTREAM *stream)
+{
+ long i;
+ int fd;
+ char *s;
+ char tmp[MAILTMPLEN];
+ /* return prototype for OP_PROTOTYPE call */
+ if (!stream) return &mtxproto;
+ if (stream->local) fatal ("mtx recycle stream");
+ if (!mailboxfile (tmp,stream->mailbox))
+ return (MAILSTREAM *) mtx_badname (tmp,stream->mailbox);
+ /* open, possibly creating INBOX */
+ if (((fd = open (tmp,O_BINARY|(stream->rdonly ? O_RDONLY:O_RDWR),NIL)) < 0)&&
+ (compare_cstring (stream->mailbox,"INBOX") ||
+ ((fd = open (tmp,O_BINARY|O_RDWR|O_CREAT|O_EXCL,S_IREAD|S_IWRITE))<0))){
+ sprintf (tmp,"Can't open mailbox: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ stream->local = fs_get (sizeof (MTXLOCAL));
+ /* canonicalize the stream mailbox name */
+ fs_give ((void **) &stream->mailbox);
+ if (s = strchr ((s = strrchr (tmp,'\\')) ? s : tmp,'.')) *s = '\0';
+ stream->mailbox = cpystr (tmp);
+ LOCAL->fd = fd; /* note the file */
+ LOCAL->filesize = 0; /* initialize parsed file size */
+ LOCAL->buf = NIL; /* initially no local buffer */
+ stream->sequence++; /* bump sequence number */
+ stream->uid_validity = time (0);
+ /* parse mailbox */
+ stream->nmsgs = stream->recent = 0;
+ if (!mtx_ping (stream)) return NIL;
+ if (!stream->nmsgs) 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;
+ return stream; /* return stream to caller */
+}
+\f
+/* MTX mail close
+ * Accepts: MAIL stream
+ * close options
+ */
+
+void mtx_close (MAILSTREAM *stream,long options)
+{
+ if (stream && LOCAL) { /* only if a file is open */
+ int silent = stream->silent;
+ stream->silent = T;
+ if (options & CL_EXPUNGE) mtx_expunge (stream,NIL,NIL);
+ close (LOCAL->fd); /* close the local file */
+ if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
+ /* nuke the local data */
+ fs_give ((void **) &stream->local);
+ stream->dtb = NIL; /* log out the DTB */
+ }
+}
+\f
+/* MTX 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 *mtx_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
+ long flags)
+{
+ *length = 0; /* default to empty */
+ if (flags & FT_UID) return "";/* UID call "impossible" */
+ /* get to header position */
+ lseek (LOCAL->fd,mtx_hdrpos (stream,msgno,length),L_SET);
+ /* is buffer big enough? */
+ if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
+ LOCAL->buf = (char *) fs_get ((size_t) *length + 1);
+ LOCAL->buf[*length] = '\0'; /* tie off string */
+ /* slurp the data */
+ read (LOCAL->fd,LOCAL->buf,(size_t) *length);
+ return LOCAL->buf;
+}
+
+
+/* MTX mail fetch message text (body only)
+ * Accepts: MAIL stream
+ * message # to fetch
+ * pointer to returned header text length
+ * option flags
+ * Returns: T, always
+ */
+
+long mtx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
+{
+ MESSAGECACHE *elt;
+ FDDATA d;
+ unsigned long hdrsize,hdrpos;
+ /* UID call "impossible" */
+ if (flags & FT_UID) return NIL;
+ elt = mail_elt (stream,msgno);/* if message not seen */
+ if (elt->seen && !(flags & FT_PEEK)) {
+ elt->seen = T; /* mark message as seen */
+ /* recalculate status */
+ mtx_update_status (stream,msgno);
+ mm_flags (stream,msgno);
+ }
+ /* get location of text data */
+ hdrpos = mtx_hdrpos (stream,msgno,&hdrsize);
+ d.fd = LOCAL->fd; /* set initial stringstruct */
+ d.pos = hdrpos + hdrsize;
+ /* flush old buffer */
+ if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
+ d.chunk = LOCAL->buf = (char *) fs_get ((size_t) d.chunksize = CHUNKSIZE);
+ INIT (bs,fd_string,(void *) &d,elt->rfc822_size - hdrsize);
+ return T; /* success */
+}
+\f
+/* MTX mail per-message modify flags
+ * Accepts: MAIL stream
+ * message cache element
+ */
+
+void mtx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt)
+{
+ /* recalculate status */
+ mtx_update_status (stream,elt->msgno);
+}
+
+
+/* MTX mail ping mailbox
+ * Accepts: MAIL stream
+ * Returns: T if stream still alive, NIL if not
+ */
+
+long mtx_ping (MAILSTREAM *stream)
+{
+ /* punt if stream no longer alive */
+ if (!(stream && LOCAL)) return NIL;
+ /* parse mailbox, punt if parse dies */
+ return (mtx_parse (stream)) ? T : NIL;
+}
+
+
+/* MTX mail check mailbox (reparses status too)
+ * Accepts: MAIL stream
+ */
+
+void mtx_check (MAILSTREAM *stream)
+{
+ unsigned long i = 1;
+ if (mtx_ping (stream)) { /* ping mailbox */
+ /* get new message status */
+ while (i <= stream->nmsgs) mail_elt (stream,i++);
+ mm_log ("Check completed",(long) NIL);
+ }
+}
+\f
+/* MTX mail expunge mailbox
+ * Accepts: MAIL stream
+ * sequence to expunge if non-NIL
+ * expunge options
+ * Returns: T, always
+ */
+
+long mtx_expunge (MAILSTREAM *stream,char *sequence,long options)
+{
+ long ret;
+ unsigned long i = 1;
+ unsigned long j,k,m,recent;
+ unsigned long n = 0;
+ unsigned long delta = 0;
+ MESSAGECACHE *elt;
+ char tmp[MAILTMPLEN];
+ if (!(ret = (sequence ? ((options & EX_UID) ?
+ mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence)) : LONGT) &&
+ mtx_ping (stream))); /* parse sequence if given, ping stream */
+ else if (stream->rdonly) mm_log ("Expunge ignored on readonly mailbox",WARN);
+ else {
+ mm_critical (stream); /* go critical */
+ recent = stream->recent; /* get recent now that pinged */
+ while (i <= stream->nmsgs) {/* for each message */
+ elt = mail_elt (stream,i);/* get cache element */
+ /* number of bytes to smash or preserve */
+ k = elt->private.special.text.size + elt->rfc822_size;
+ /* if need to expunge this message */
+ if (elt->deleted && (sequence ? elt->sequence : T)) {
+ /* if recent, note one less recent message */
+ if (elt->recent) --recent;
+ delta += k; /* number of bytes to delete */
+ /* notify upper levels */
+ mail_expunged (stream,i);
+ n++; /* count up one more deleted message */
+ }
+ else if (i++ && delta) { /* preserved message */
+ /* first byte to preserve */
+ j = elt->private.special.offset;
+ do { /* read from source position */
+ m = min (k,(unsigned long) MAILTMPLEN);
+ lseek (LOCAL->fd,j,SEEK_SET);
+ read (LOCAL->fd,tmp,(size_t) m);
+ /* write to destination position */
+ lseek (LOCAL->fd,j - delta,SEEK_SET);
+ write (LOCAL->fd,tmp,(size_t) m);
+ j += m; /* next chunk, perhaps */
+ } while (k -= m); /* until done */
+ elt->private.special.offset -= delta;
+ }
+ }
+ if (n) { /* truncate file after last message */
+ chsize (LOCAL->fd,LOCAL->filesize -= delta);
+ sprintf (tmp,"Expunged %ld messages",n);
+ mm_log (tmp,(long) NIL); /* output the news */
+ }
+ 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
+/* MTX mail copy message(s)
+ * Accepts: MAIL stream
+ * sequence
+ * destination mailbox
+ * copy options
+ * Returns: T if success, NIL if failed
+ */
+
+long mtx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+{
+ char tmp[MAILTMPLEN];
+ struct stat sbuf;
+ MESSAGECACHE *elt;
+ unsigned long i,j,k;
+ long ret = LONGT;
+ int fd;
+ mailproxycopy_t pc =
+ (mailproxycopy_t) mail_parameters (stream,GET_MAILPROXYCOPY,NIL);
+ if (!((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
+ mail_sequence (stream,sequence))) return NIL;
+ if (!mtx_isvalid (mailbox,tmp)) switch (errno) {
+ case ENOENT: /* no such file? */
+ mm_notify (stream,"[TRYCREATE] Must create mailbox before append",
+ (long) NIL);
+ return NIL;
+ case 0: /* merely empty file? */
+ break;
+ case EINVAL: /* name is bogus */
+ if (pc) return (*pc) (stream,sequence,mailbox,options);
+ return mtx_badname (tmp,mailbox);
+ default: /* file exists, but not valid format */
+ if (pc) return (*pc) (stream,sequence,mailbox,options);
+ sprintf (tmp,"Not a MTX-format mailbox: %s",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ /* open the destination */
+ if (!mailboxfile (tmp,mailbox) ||
+ (fd = open (tmp,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,
+ S_IREAD|S_IWRITE)) < 0) {
+ sprintf (tmp,"Unable to open copy mailbox: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+\f
+ mm_critical (stream); /* go critical */
+ fstat (fd,&sbuf); /* get current file size */
+ /* for each requested message */
+ for (i = 1; ret && (i <= stream->nmsgs); i++)
+ if ((elt = mail_elt (stream,i))->sequence) {
+ lseek (LOCAL->fd,elt->private.special.offset,SEEK_SET);
+ /* number of bytes to copy */
+ k = elt->private.special.text.size + elt->rfc822_size;
+ do { /* read from source position */
+ j = min (k,(long) MAILTMPLEN);
+ read (LOCAL->fd,tmp,(size_t) j);
+ if (write (fd,tmp,(size_t) j) < 0) {
+ sprintf (tmp,"Unable to write message: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ chsize (fd,sbuf.st_size);
+ j = k;
+ ret = NIL; /* note error */
+ break;
+ }
+ } while (k -= j); /* until done */
+ }
+ close (fd); /* close the file */
+ mm_nocritical (stream); /* release critical */
+ /* delete all requested messages */
+ if (ret && (options & CP_MOVE)) for (i = 1; i <= stream->nmsgs; i++)
+ if ((elt = mail_elt (stream,i))->sequence) {
+ elt->deleted = T; /* mark message deleted */
+ /* recalculate status */
+ mtx_update_status (stream,i);
+ }
+ if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
+ mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
+ return ret;
+}
+\f
+/* MTX mail append message from stringstruct
+ * Accepts: MAIL stream
+ * destination mailbox
+ * append callback
+ * data for callback
+ * Returns: T if append successful, else NIL
+ */
+
+long mtx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+{
+ struct stat sbuf;
+ int fd,ld,c;
+ char *flags,*date,tmp[MAILTMPLEN],file[MAILTMPLEN];
+ FILE *df;
+ MESSAGECACHE elt;
+ long f;
+ unsigned long i,uf;
+ STRING *message;
+ long ret = LONGT;
+ /* default stream to prototype */
+ if (!stream) stream = &mtxproto;
+ /* make sure valid mailbox */
+ if (!mtx_isvalid (mailbox,tmp)) switch (errno) {
+ case ENOENT: /* no such file? */
+ if (((mailbox[0] == 'I') || (mailbox[0] == 'i')) &&
+ ((mailbox[1] == 'N') || (mailbox[1] == 'n')) &&
+ ((mailbox[2] == 'B') || (mailbox[2] == 'b')) &&
+ ((mailbox[3] == 'O') || (mailbox[3] == 'o')) &&
+ ((mailbox[4] == 'X') || (mailbox[4] == 'x')) && !mailbox[5])
+ dummy_create (NIL,"INBOX.MTX");
+ else {
+ mm_notify (stream,"[TRYCREATE] Must create mailbox before append",NIL);
+ return NIL;
+ }
+ /* falls through */
+ case 0: /* merely empty file? */
+ break;
+ case EINVAL:
+ return mtx_badname (tmp,mailbox);
+ default:
+ sprintf (tmp,"Not a MTX-format mailbox: %.80s",mailbox);
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ /* get first message */
+ if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
+ /* open destination mailbox */
+ if (!mailboxfile (file,mailbox) ||
+ ((fd = open (file,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,
+ S_IREAD|S_IWRITE)) < 0) || !(df = fdopen (fd,"ab"))) {
+ sprintf (tmp,"Can't open append mailbox: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ mm_critical (stream); /* go critical */
+ fstat (fd,&sbuf); /* get current file size */
+\f
+ errno = 0;
+ do { /* parse flags */
+ if (!SIZE (message)) { /* guard against zero-length */
+ mm_log ("Append of zero-length message",ERROR);
+ ret = NIL;
+ break;
+ }
+ f = mail_parse_flags (stream,flags,&i);
+ /* reverse bits (dontcha wish we had CIRC?) */
+ for (uf = 0; i; uf |= 1 << (29 - find_rightmost_bit (&i)));
+ if (date) { /* parse date if given */
+ if (!mail_parse_date (&elt,date)) {
+ sprintf (tmp,"Bad date in append: %.80s",date);
+ mm_log (tmp,ERROR);
+ ret = NIL; /* mark failure */
+ break;
+ }
+ mail_date (tmp,&elt); /* write preseved date */
+ }
+ else internal_date (tmp); /* get current date in IMAP format */
+ /* write header */
+ if (fprintf (df,"%s,%lu;%010lo%02lo\015\012",tmp,i = SIZE (message),uf,
+ (unsigned long) f) < 0) ret = NIL;
+ else { /* write message */
+ if (i) do c = 0xff & SNX (message);
+ while ((putc (c,df) != EOF) && --i);
+ /* get next message */
+ if (i || !(*af) (stream,data,&flags,&date,&message)) ret = NIL;
+ }
+ } while (ret && message);
+ /* revert file if failure */
+ if (!ret || (fflush (df) == EOF)) {
+ chsize (fd,sbuf.st_size); /* revert file */
+ close (fd); /* make sure fclose() doesn't corrupt us */
+ if (errno) {
+ sprintf (tmp,"Message append failed: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ }
+ ret = NIL;
+ }
+ fclose (df); /* close the file */
+ 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;
+}
+
+
+/* Return bad file name error message
+ * Accepts: temporary buffer
+ * file name
+ * Returns: long NIL always
+ */
+
+long mtx_badname (char *tmp,char *s)
+{
+ sprintf (tmp,"Invalid mailbox name: %s",s);
+ mm_log (tmp,ERROR);
+ return (long) NIL;
+}
+\f
+/* Parse mailbox
+ * Accepts: MAIL stream
+ * Returns: T if parse OK
+ * NIL if failure, stream aborted
+ */
+
+long mtx_parse (MAILSTREAM *stream)
+{
+ struct stat sbuf;
+ MESSAGECACHE *elt = NIL;
+ unsigned char *s,*t,*x,lbuf[65];
+ char tmp[MAILTMPLEN];
+ long i;
+ long curpos = LOCAL->filesize;
+ long nmsgs = stream->nmsgs;
+ long recent = stream->recent;
+ fstat (LOCAL->fd,&sbuf); /* get status */
+ if (sbuf.st_size < curpos) { /* sanity check */
+ sprintf (tmp,"Mailbox shrank from %ld to %ld!",curpos,sbuf.st_size);
+ mm_log (tmp,ERROR);
+ mtx_close (stream,NIL);
+ return NIL;
+ }
+ /* while there is stuff to parse */
+ while (i = sbuf.st_size - curpos) {
+ /* get to that position in the file */
+ lseek (LOCAL->fd,curpos,SEEK_SET);
+ if ((i = read (LOCAL->fd,lbuf,64)) <= 0) {
+ sprintf (tmp,"Unable to read internal header at %ld, size = %ld: %s",
+ curpos,sbuf.st_size,i ? strerror (errno) : "no data read");
+ mm_log (tmp,ERROR);
+ mtx_close (stream,NIL);
+ return NIL;
+ }
+ lbuf[i] = '\0'; /* tie off buffer just in case */
+ if (!((s = strchr (lbuf,'\015')) && (s[1] == '\012'))) {
+ sprintf (tmp,"Unable to find end of line at %ld in %ld bytes, text: %s",
+ curpos,i,(char *) lbuf);
+ mm_log (tmp,ERROR);
+ mtx_close (stream,NIL);
+ return NIL;
+ }
+ *s = '\0'; /* tie off header line */
+ i = (s + 2) - lbuf; /* note start of text offset */
+ if (!((s = strchr (lbuf,',')) && (t = strchr (s+1,';')))) {
+ sprintf (tmp,"Unable to parse internal header at %ld: %s",curpos,
+ (char *) lbuf);
+ mm_log (tmp,ERROR);
+ mtx_close (stream,NIL);
+ return NIL;
+ }
+\f
+ *s++ = '\0'; *t++ = '\0'; /* tie off fields */
+ /* intantiate an elt for this message */
+ (elt = mail_elt (stream,++nmsgs))->valid = T;
+ elt->private.uid = ++stream->uid_last;
+ /* note file offset of header */
+ elt->private.special.offset = curpos;
+ /* as well as offset from header of message */
+ elt->private.special.text.size = i;
+ /* header size not known yet */
+ elt->private.msg.header.text.size = 0;
+ /* parse the header components */
+ if (!(mail_parse_date (elt,lbuf) &&
+ (elt->rfc822_size = strtol (x = s,(char **) &s,10)) && (!(s && *s))&&
+ isdigit (t[0]) && isdigit (t[1]) && isdigit (t[2]) &&
+ isdigit (t[3]) && isdigit (t[4]) && isdigit (t[5]) &&
+ isdigit (t[6]) && isdigit (t[7]) && isdigit (t[8]) &&
+ isdigit (t[9]) && isdigit (t[10]) && isdigit (t[11]) && !t[12])) {
+ sprintf (tmp,"Unable to parse internal header elements at %ld: %s,%s;%s",
+ curpos,(char *) lbuf,(char *) x,(char *) t);
+ mtx_close (stream,NIL);
+ return NIL;
+ }
+ /* update current position to next header */
+ curpos += i + elt->rfc822_size;
+ /* calculate system flags */
+ if ((i = ((t[10]-'0') * 8) + t[11]-'0') & fSEEN) elt->seen = T;
+ if (i & fDELETED) elt->deleted = T;
+ if (i & fFLAGGED) elt->flagged = T;
+ if (i & fANSWERED) elt->answered = T;
+ if (i & fDRAFT) elt->draft = T;
+ if (curpos > sbuf.st_size) {
+ sprintf (tmp,"Last message (at %lu) runs past end of file (%lu > %lu)",
+ elt->private.special.offset,curpos,sbuf.st_size);
+ mm_log (tmp,ERROR);
+ mtx_close (stream,NIL);
+ return NIL;
+ }
+ }
+ /* update parsed file size */
+ LOCAL->filesize = sbuf.st_size;
+ mail_exists (stream,nmsgs); /* notify upper level of new mailbox size */
+ mail_recent (stream,recent); /* and of change in recent messages */
+ return T; /* return the winnage */
+}
+\f
+/* Update status string
+ * Accepts: MAIL stream
+ * message number
+ */
+
+void mtx_update_status (MAILSTREAM *stream,unsigned long msgno)
+{
+ char tmp[MAILTMPLEN];
+ MESSAGECACHE *elt = mail_elt (stream,msgno);
+ unsigned long j,k = 0;
+ /* not if readonly you don't */
+ if (stream->rdonly || !elt->valid) return;
+ j = elt->user_flags; /* get user flags */
+ /* reverse bits (dontcha wish we had CIRC?) */
+ while (j) k |= 1 << 29 - find_rightmost_bit (&j);
+ sprintf (tmp,"%010lo%02o",k, /* print new flag string */
+ fOLD + (fSEEN * elt->seen) + (fDELETED * elt->deleted) +
+ (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered) +
+ (fDRAFT * elt->draft));
+ /* get to that place in the file */
+ lseek (LOCAL->fd,(off_t) elt->private.special.offset +
+ elt->private.special.text.size - 14,SEEK_SET);
+ write (LOCAL->fd,tmp,12); /* write new flags */
+}
+\f
+/* MTX locate header for a message
+ * Accepts: MAIL stream
+ * message number
+ * pointer to returned header size
+ * Returns: position of header in file
+ */
+
+unsigned long mtx_hdrpos (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *size)
+{
+ unsigned long siz;
+ size_t i = 0;
+ int q = 0;
+ char *s,tmp[MAILTMPLEN];
+ MESSAGECACHE *elt = mail_elt (stream,msgno);
+ long pos = elt->private.special.offset + elt->private.special.text.size;
+ /* is header size known? */
+ if (!(*size = elt->private.msg.header.text.size)) {
+ /* get to header position */
+ lseek (LOCAL->fd,pos,SEEK_SET);
+ /* search message for CRLF CRLF */
+ for (siz = 1; siz <= elt->rfc822_size; siz++) {
+ if (!i && /* buffer empty? */
+ (read (LOCAL->fd,s = tmp,
+ i = (size_t) min(elt->rfc822_size-siz,(long)MAILTMPLEN))<= 0))
+ return pos;
+ else i--;
+ switch (q) { /* sniff at buffer */
+ case 0: /* first character */
+ q = (*s++ == '\015') ? 1 : 0;
+ break;
+ case 1: /* second character */
+ q = (*s++ == '\012') ? 2 : 0;
+ break;
+ case 2: /* third character */
+ q = (*s++ == '\015') ? 3 : 0;
+ break;
+ case 3: /* fourth character */
+ if (*s++ == '\012') { /* have the sequence? */
+ /* yes, note for later */
+ elt->private.msg.header.text.size = (*size = siz);
+ return pos; /* return to caller */
+ }
+ q = 0; /* lost... */
+ break;
+ }
+ }
+ }
+ return pos; /* have position */
+}
projects / uw-imap / commitdiff