--- /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: Berkeley 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
+ */
+
+
+/* Dedication:
+ * This file is dedicated with affection to those Merry Marvels of Musical
+ * Madness . . .
+ * -> The Incomparable Leland Stanford Junior University Marching Band <-
+ * who entertain, awaken, and outrage Stanford fans in the fact of repeated
+ * losing seasons and shattered Rose Bowl dreams [Cardinal just don't have
+ * HUSKY FEVER!!!].
+ *
+ */
+
+#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
+/* Berkeley I/O stream local data */
+
+typedef struct bezerk_local {
+ int fd; /* file descriptor for I/O */
+ off_t filesize; /* file size parsed */
+ char *buf; /* temporary buffer */
+} BEZERKLOCAL;
+
+
+/* Convenient access to local data */
+
+#define LOCAL ((BEZERKLOCAL *) stream->local)
+\f
+/* Function prototypes */
+
+DRIVER *bezerk_valid (char *name);
+long bezerk_isvalid (char *name,char *tmp);
+int bezerk_valid_line (char *s,char **rx,int *rzn);
+void *bezerk_parameters (long function,void *value);
+void bezerk_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
+void bezerk_list (MAILSTREAM *stream,char *ref,char *pat);
+void bezerk_lsub (MAILSTREAM *stream,char *ref,char *pat);
+long bezerk_create (MAILSTREAM *stream,char *mailbox);
+long bezerk_delete (MAILSTREAM *stream,char *mailbox);
+long bezerk_rename (MAILSTREAM *stream,char *old,char *newname);
+MAILSTREAM *bezerk_open (MAILSTREAM *stream);
+void bezerk_close (MAILSTREAM *stream,long options);
+char *bezerk_header (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *length,long flags);
+long bezerk_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,
+ long flags);
+long bezerk_ping (MAILSTREAM *stream);
+void bezerk_check (MAILSTREAM *stream);
+long bezerk_expunge (MAILSTREAM *stream,char *sequence,long options);
+long bezerk_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
+ long options);
+long bezerk_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+int bezerk_append_msg (MAILSTREAM *stream,FILE *sf,char *flags,char *date,
+ STRING *msg);
+void bezerk_gc (MAILSTREAM *stream,long gcflags);
+char *bezerk_file (char *dst,char *name);
+long bezerk_badname (char *tmp,char *s);
+long bezerk_parse (MAILSTREAM *stream);
+unsigned long bezerk_hdrpos (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *size);
+\f
+/* Berkeley mail routines */
+
+
+/* Driver dispatch used by MAIL */
+
+DRIVER bezerkdriver = {
+ "bezerk", /* driver name */
+ /* driver flags */
+ DR_LOCAL|DR_MAIL|DR_LOWMEM|DR_CRLF|DR_NOSTICKY,
+ (DRIVER *) NIL, /* next driver */
+ bezerk_valid, /* mailbox is valid for us */
+ bezerk_parameters, /* manipulate parameters */
+ bezerk_scan, /* scan mailboxes */
+ bezerk_list, /* list mailboxes */
+ bezerk_lsub, /* list subscribed mailboxes */
+ NIL, /* subscribe to mailbox */
+ NIL, /* unsubscribe from mailbox */
+ bezerk_create, /* create mailbox */
+ bezerk_delete, /* delete mailbox */
+ bezerk_rename, /* rename mailbox */
+ mail_status_default, /* status of mailbox */
+ bezerk_open, /* open mailbox */
+ bezerk_close, /* close mailbox */
+ NIL, /* fetch message "fast" attributes */
+ NIL, /* fetch message flags */
+ NIL, /* fetch overview */
+ NIL, /* fetch message envelopes */
+ bezerk_header, /* fetch message header */
+ bezerk_text, /* fetch message text */
+ 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 */
+ bezerk_ping, /* ping mailbox to see if still alive */
+ bezerk_check, /* check for new messages */
+ bezerk_expunge, /* expunge deleted messages */
+ bezerk_copy, /* copy messages to another mailbox */
+ bezerk_append, /* append string message to mailbox */
+ NIL /* garbage collect stream */
+};
+
+ /* prototype stream */
+MAILSTREAM bezerkproto = {&bezerkdriver};
+\f
+/* Berkeley mail validate mailbox
+ * Accepts: mailbox name
+ * Returns: our driver if name is valid, NIL otherwise
+ */
+
+DRIVER *bezerk_valid (char *name)
+{
+ char tmp[MAILTMPLEN];
+ return bezerk_isvalid (name,tmp) ? &bezerkdriver : (DRIVER *) NIL;
+}
+
+
+/* Berkeley mail test for valid mailbox
+ * Accepts: mailbox name
+ * Returns: T if valid, NIL otherwise
+ */
+
+long bezerk_isvalid (char *name,char *tmp)
+{
+ int fd;
+ long ret = NIL;
+ 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);
+ errno = -1; /* in case bezerk_valid_line fails */
+ if (read (fd,tmp,MAILTMPLEN-1) >= 0)
+ ret = bezerk_valid_line (tmp,NIL,NIL);
+ close (fd); /* close the file */
+ }
+ }
+ /* in case INBOX but not bezerk 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 */
+}
+\f
+/* Validate line
+ * Accepts: pointer to candidate string to validate as a From header
+ * return pointer to end of date/time field
+ * return pointer to offset from t of time (hours of ``mmm dd hh:mm'')
+ * return pointer to offset from t of time zone (if non-zero)
+ * Returns: t,ti,zn set if valid From string, else ti is NIL
+ */
+
+int bezerk_valid_line (char *s,char **rx,int *rzn)
+{
+ char *x;
+ int zn;
+ int ti = 0;
+ /* line must begin with "From " */
+ if ((*s != 'F') || (s[1] != 'r') || (s[2] != 'o') || (s[3] != 'm') ||
+ (s[4] != ' ')) return NIL;
+ /* find end of line */
+ for (x = s + 5; *x && *x != '\012'; x++);
+ if (!x) return NIL; /* end of line not found */
+ if (x[-1] == '\015') x--; /* ignore CR */
+ if ((x - s < 27)) return NIL; /* line too short */
+ if (x - s >= 41) { /* possible search for " remote from " */
+ for (zn = -1; x[zn] != ' '; zn--);
+ if ((x[zn-1] == 'm') && (x[zn-2] == 'o') && (x[zn-3] == 'r') &&
+ (x[zn-4] == 'f') && (x[zn-5] == ' ') && (x[zn-6] == 'e') &&
+ (x[zn-7] == 't') && (x[zn-8] == 'o') && (x[zn-9] == 'm') &&
+ (x[zn-10] == 'e') && (x[zn-11] == 'r') && (x[zn-12] == ' '))
+ x += zn - 12;
+ }
+ if (x[-5] == ' ') { /* ends with year? */
+ /* no timezone? */
+ if (x[-8] == ':') zn = 0,ti = -5;
+ /* three letter timezone? */
+ else if (x[-9] == ' ') ti = zn = -9;
+ /* numeric timezone? */
+ else if ((x[-11]==' ') && ((x[-10]=='+') || (x[-10]=='-'))) ti = zn = -11;
+ }
+ else if (x[-4] == ' ') { /* no year and three leter timezone? */
+ if (x[-9] == ' ') zn = -4,ti = -9;
+ }
+ else if (x[-6] == ' ') { /* no year and numeric timezone? */
+ if ((x[-11] == ' ') && ((x[-5] == '+') || (x[-5] == '-')))
+ zn = -6,ti = -11;
+ }
+ /* time must be www mmm dd hh:mm[:ss] */
+ if (ti && !((x[ti - 3] == ':') &&
+ (x[ti -= ((x[ti - 6] == ':') ? 9 : 6)] == ' ') &&
+ (x[ti - 3] == ' ') && (x[ti - 7] == ' ') &&
+ (x[ti - 11] == ' '))) return NIL;
+ if (rx) *rx = x; /* set return values */
+ if (rzn) *rzn = zn;
+ return ti;
+}
+\f
+/* Berkeley manipulate driver parameters
+ * Accepts: function code
+ * function-dependent value
+ * Returns: function-dependent return value
+ */
+
+void *bezerk_parameters (long function,void *value)
+{
+ return NIL;
+}
+
+
+/* Berkeley mail scan mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ * string to scan
+ */
+
+void bezerk_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
+{
+ if (stream) dummy_scan (NIL,ref,pat,contents);
+}
+
+
+/* Berkeley mail list mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void bezerk_list (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_list (stream,ref,pat);
+}
+
+
+/* Berkeley mail list subscribed mailboxes
+ * Accepts: mail stream
+ * reference
+ * pattern to search
+ */
+
+void bezerk_lsub (MAILSTREAM *stream,char *ref,char *pat)
+{
+ if (stream) dummy_lsub (stream,ref,pat);
+}
+\f
+/* Berkeley mail create mailbox
+ * Accepts: MAIL stream
+ * mailbox name to create
+ * Returns: T on success, NIL on failure
+ */
+
+long bezerk_create (MAILSTREAM *stream,char *mailbox)
+{
+ return dummy_create (stream,mailbox);
+}
+
+
+/* Berkeley mail delete mailbox
+ * Accepts: MAIL stream
+ * mailbox name to delete
+ * Returns: T on success, NIL on failure
+ */
+
+long bezerk_delete (MAILSTREAM *stream,char *mailbox)
+{
+ return dummy_delete (stream,mailbox);
+}
+
+
+/* Berkeley mail rename mailbox
+ * Accepts: MAIL stream
+ * old mailbox name
+ * new mailbox name (or NIL for delete)
+ * Returns: T on success, NIL on failure
+ */
+
+long bezerk_rename (MAILSTREAM *stream,char *old,char *newname)
+{
+ return dummy_rename (stream,old,newname);
+}
+\f
+/* Berkeley mail open
+ * Accepts: stream to open
+ * Returns: stream on success, NIL on failure
+ */
+
+MAILSTREAM *bezerk_open (MAILSTREAM *stream)
+{
+ long i;
+ int fd;
+ char *s;
+ char tmp[MAILTMPLEN];
+ /* return prototype for OP_PROTOTYPE call */
+ if (!stream) return &bezerkproto;
+ if (stream->local) fatal ("bezerk recycle stream");
+ if (!mailboxfile (tmp,stream->mailbox))
+ return (MAILSTREAM *) bezerk_badname (tmp,stream->mailbox);
+ if (((fd = open (tmp,O_BINARY|O_RDONLY,NIL)) < 0)) {
+ sprintf (tmp,"Can't open mailbox: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ stream->rdonly = T; /* this driver is readonly */
+ stream->local = fs_get (sizeof (BEZERKLOCAL));
+ /* 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 (!bezerk_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 = NIL;
+ stream->perm_user_flags = NIL;
+ return stream; /* return stream to caller */
+}
+\f
+/* Berkeley mail close
+ * Accepts: MAIL stream
+ * close options
+ */
+
+void bezerk_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) bezerk_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
+/* Berkeley 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 *bezerk_header (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *length,long flags)
+{
+ char tmp[MAILTMPLEN];
+ *length = 0; /* default to empty */
+ if (flags & FT_UID) return "";/* UID call "impossible" */
+ /* get to header position */
+ lseek (LOCAL->fd,bezerk_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;
+}
+
+
+/* Berkeley mail fetch message text (body only)
+ * Accepts: MAIL stream
+ * message # to fetch
+ * pointer to returned header text length
+ * option flags
+ * Returns: T, always
+ */
+
+long bezerk_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 */
+ /* mark message as seen */
+ if (elt->seen && !(flags & FT_PEEK)) {
+ elt->seen = T;
+ mm_flags (stream,msgno);
+ }
+ /* get location of text data */
+ hdrpos = bezerk_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
+/* Berkeley mail ping mailbox
+ * Accepts: MAIL stream
+ * Returns: T if stream still alive, NIL if not
+ */
+
+long bezerk_ping (MAILSTREAM *stream)
+{
+ /* punt if stream no longer alive */
+ if (!(stream && LOCAL)) return NIL;
+ /* parse mailbox, punt if parse dies */
+ return (bezerk_parse (stream)) ? T : NIL;
+}
+
+
+/* Berkeley mail check mailbox (reparses status too)
+ * Accepts: MAIL stream
+ */
+
+void bezerk_check (MAILSTREAM *stream)
+{
+ unsigned long i = 1;
+ if (bezerk_ping (stream)) { /* ping mailbox */
+ /* get new message status */
+ while (i <= stream->nmsgs) mail_elt (stream,i++);
+ mm_log ("Check completed",(long) NIL);
+ }
+}
+\f
+/* Berkeley mail expunge mailbox
+ * Accepts: MAIL stream
+ * sequence to expunge if non-NIL
+ * expunge options
+ * Returns: T, always
+ */
+
+long bezerk_expunge (MAILSTREAM *stream,char *sequence,long options)
+{
+ if (!stream->silent) mm_log ("Expunge ignored on readonly mailbox",WARN);
+ return LONGT;
+}
+\f
+/* Berkeley mail copy message(s)
+ * Accepts: MAIL stream
+ * sequence
+ * destination mailbox
+ * copy options
+ * Returns: T if success, NIL if failed
+ */
+
+long bezerk_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+{
+ char tmp[MAILTMPLEN];
+ struct stat sbuf;
+ MESSAGECACHE *elt;
+ unsigned long i,j,k;
+ 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;
+ /* make sure valid mailbox */
+ if (!bezerk_isvalid (mailbox,tmp) && errno) {
+ if (errno == ENOENT)
+ mm_notify (stream,"[TRYCREATE] Must create mailbox before append",
+ (long) NIL);
+ else if (pc) return (*pc) (stream,sequence,mailbox,options);
+ else if (mailboxfile (tmp,mailbox)) {
+ sprintf (tmp,"Not a Bezerk-format mailbox: %s",mailbox);
+ mm_log (tmp,ERROR);
+ }
+ else bezerk_badname (tmp,mailbox);
+ 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; 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 */
+ j = elt->private.msg.full.offset + elt->rfc822_size;
+ do { /* read from source position */
+ k = min (j,(unsigned long) MAILTMPLEN);
+ read (LOCAL->fd,tmp,(unsigned int) k);
+ if (write (fd,tmp,(unsigned int) k) < 0) {
+ sprintf (tmp,"Unable to write message: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ chsize (fd,sbuf.st_size);
+ close (fd); /* punt */
+ mm_nocritical (stream);
+ return NIL;
+ }
+ } while (j -= k); /* until done */
+ }
+ close (fd); /* close the file */
+ mm_nocritical (stream); /* release critical */
+ /* delete all requested messages */
+ if (options & CP_MOVE) for (i = 1; i <= stream->nmsgs; i++)
+ if ((elt = mail_elt (stream,i))->sequence) elt->deleted = T;
+ if (mail_parameters (NIL,GET_COPYUID,NIL))
+ mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
+ return T;
+}
+\f
+/* Berkeley mail append message from stringstruct
+ * Accepts: MAIL stream
+ * destination mailbox
+ * append callback
+ * data for callback
+ * Returns: T if append successful, else NIL
+ */
+
+#define BUFLEN MAILTMPLEN
+
+long bezerk_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+{
+ struct stat sbuf;
+ int fd;
+ unsigned long i,j;
+ char *flags,*date,buf[BUFLEN],tmp[MAILTMPLEN],file[MAILTMPLEN];
+ FILE *sf,*df;
+ MESSAGECACHE elt;
+ STRING *message;
+ long ret = LONGT;
+ /* default stream to prototype */
+ if (!stream) stream = &bezerkproto;
+ /* make sure valid mailbox */
+ if (!bezerk_isvalid (mailbox,tmp) && errno) {
+ if (errno == ENOENT) {
+ 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])
+ bezerk_create (NIL,"INBOX");
+ else {
+ mm_notify (stream,"[TRYCREATE] Must create mailbox before append",NIL);
+ return NIL;
+ }
+ }
+ else if (mailboxfile (tmp,mailbox)) {
+ sprintf (tmp,"Not a Bezerk-format mailbox: %.80ss",mailbox);
+ mm_log (tmp,ERROR);
+ }
+ else bezerk_badname (tmp,mailbox);
+ return NIL;
+ }
+ tzset (); /* initialize timezone stuff */
+ /* get first message */
+ if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
+ if (!(sf = tmpfile ())) { /* must have scratch file */
+ sprintf (tmp,"Unable to create scratch file: %.80s",strerror (errno));
+ mm_log (tmp,ERROR);
+ }
+\f
+ do { /* parse date */
+ if (!date) rfc822_date (date = tmp);
+ if (!mail_parse_date (&elt,date)) {
+ sprintf (tmp,"Bad date in append: %.80s",date);
+ mm_log (tmp,ERROR);
+ }
+ else { /* user wants to suppress time zones? */
+ if (mail_parameters (NIL,GET_NOTIMEZONES,NIL)) {
+ time_t when = mail_longdate (&elt);
+ date = ctime (&when); /* use traditional date */
+ }
+ /* use POSIX-style date */
+ else date = mail_cdate (tmp,&elt);
+ if (!SIZE (message)) mm_log ("Append of zero-length message",ERROR);
+ else if (!bezerk_append_msg (stream,sf,flags,date,message)) {
+ sprintf (tmp,"Error writing scratch file: %.80s",strerror (errno));
+ mm_log (tmp,ERROR);
+ }
+ /* get next message */
+ else if ((*af) (stream,data,&flags,&date,&message)) continue;
+ }
+ fclose (sf); /* punt scratch file */
+ return NIL; /* give up */
+ } while (message); /* until no more messages */
+ if (fflush (sf) || fstat (fileno (sf),&sbuf)) {
+ sprintf (tmp,"Error finishing scratch file: %.80s",strerror (errno));
+ mm_log (tmp,ERROR);
+ fclose (sf); /* punt scratch file */
+ return NIL; /* give up */
+ }
+ i = sbuf.st_size; /* size of scratch file */
+\f
+ mm_critical (stream); /* go critical */
+ /* open the destination */
+ if (!mailboxfile (tmp,mailbox) ||
+ ((fd = open (tmp,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,
+ S_IREAD|S_IWRITE)) < 0) ||
+ !(df = fdopen (fd,"ab"))) {
+ mm_nocritical (stream); /* done with critical */
+ sprintf (tmp,"Can't open append mailbox: %s",strerror (errno));
+ mm_log (tmp,ERROR);
+ return NIL;
+ }
+ fstat (fd,&sbuf); /* get current file size */
+ while (i) /* until written all bytes */
+ if ((j = fread (buf,1,min ((long) BUFLEN,i),sf)) &&
+ (fwrite (buf,1,j,df) == j)) i -= j;
+ fclose (sf); /* done with scratch file */
+ /* make sure append wins */
+ if (i || (fflush (df) == EOF)) {
+ chsize (fd,sbuf.st_size); /* revert file */
+ close (fd); /* make sure fclose() doesn't corrupt us */
+ sprintf (buf,"Message append failed: %s",strerror (errno));
+ mm_log (buf,ERROR);
+ ret = NIL; /* return error */
+ }
+ fclose (df);
+ 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
+/* Write single message to append scratch file
+ * Accepts: MAIL stream
+ * scratch file
+ * flags
+ * message stringstruct
+ * Returns: NIL if write error, else T
+ */
+
+int bezerk_append_msg (MAILSTREAM *stream,FILE *sf,char *flags,char *date,
+ STRING *msg)
+{
+ int c;
+ unsigned long i,uf;
+ char tmp[MAILTMPLEN];
+ long f = mail_parse_flags (stream,flags,&uf);
+ /* build initial header */
+ if ((fprintf (sf,"From %s@%s %sStatus: ",
+ myusername (),mylocalhost (),date) < 0) ||
+ (f&fSEEN && (putc ('R',sf) == EOF)) ||
+ (fputs ("\nX-Status: ",sf) == EOF) ||
+ (f&fDELETED && (putc ('D',sf) == EOF)) ||
+ (f&fFLAGGED && (putc ('F',sf) == EOF)) ||
+ (f&fANSWERED && (putc ('A',sf) == EOF)) ||
+ (f&fDRAFT && (putc ('T',sf) == EOF)) ||
+ (fputs ("\nX-Keywords:",sf) == EOF)) return NIL;
+ while (uf) /* write user flags */
+ if (fprintf (sf," %s",stream->user_flags[find_rightmost_bit (&uf)]) < 0)
+ return NIL;
+ /* tie off flags */
+ if (putc ('\n',sf) == EOF) return NIL;
+ while (SIZE (msg)) { /* copy text to scratch file */
+ /* possible delimiter if line starts with F */
+ if ((c = 0xff & SNX (msg)) == 'F') {
+ /* copy line to buffer */
+ for (i = 1,tmp[0] = c; SIZE (msg) && (c != '\n') && (i < MAILTMPLEN);)
+ if (((c = 0xff & SNX (msg)) != '\r') || !(SIZE (msg)) ||
+ (CHR (msg) != '\n')) tmp[i++] = c;
+ if ((i > 4) && (tmp[1] == 'r') && (tmp[2] == 'o') && (tmp[3] == 'm') &&
+ (tmp[4] == ' ')) { /* possible "From " line? */
+ /* yes, see if need to write a widget */
+ if (((c != '\n') || bezerk_valid_line (tmp,NIL,NIL)) &&
+ (putc ('>',sf) == EOF)) return NIL;
+ }
+ /* write buffered text */
+ if (fwrite (tmp,1,i,sf) != i) return NIL;
+ if (c == '\n') continue; /* all done if got a complete line */
+ }
+ /* copy line, toss out CR from CRLF */
+ do if (((c == '\r') && SIZE (msg) && ((c = 0xff & SNX (msg)) != '\n') &&
+ (putc ('\r',sf) == EOF)) || (putc (c,sf) == EOF)) return NIL;
+ while ((c != '\n') && SIZE (msg) && ((c = 0xff & SNX (msg)) ? c : T));
+ }
+ /* write trailing newline and return */
+ return (putc ('\n',sf) == EOF) ? NIL : T;
+}
+
+
+/* Return bad file name error message
+ * Accepts: temporary buffer
+ * file name
+ * Returns: long NIL always
+ */
+
+long bezerk_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 bezerk_parse (MAILSTREAM *stream)
+{
+ struct stat sbuf;
+ MESSAGECACHE *elt;
+ char *s,*t,tmp[MAILTMPLEN + 1],*db,datemsg[100];
+ long i;
+ int j,ti,zn;
+ long curpos = LOCAL->filesize;
+ long nmsgs = stream->nmsgs;
+ long recent = stream->recent;
+ short silent = stream->silent;
+ 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);
+ bezerk_close (stream,NIL);
+ return NIL;
+ }
+ stream->silent = T; /* don't pass up mm_exists() events yet */
+ db = datemsg + strlen (strcpy (datemsg,"Unparsable date: "));
+ /* while there is data to read */
+ while (i = sbuf.st_size - curpos){
+ /* get to that position in the file */
+ lseek (LOCAL->fd,curpos,SEEK_SET);
+ /* read first buffer's worth */
+ read (LOCAL->fd,tmp,j = (int) min (i,(long) MAILTMPLEN));
+ tmp[j] = '\0'; /* tie off buffer */
+ if (!(ti = bezerk_valid_line (tmp,&t,&zn))) {
+ mm_log ("Mailbox format invalidated (consult an expert), aborted",ERROR);
+ bezerk_close (stream,NIL);
+ return NIL;
+ }
+\f
+ /* swell the cache */
+ mail_exists (stream,++nmsgs);
+ /* instantiate 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;
+ /* note offset of message */
+ elt->private.msg.full.offset =
+ (s = ((*t == '\015') ? (t + 2) : (t + 1))) - tmp;
+ /* generate plausable IMAPish date string */
+ db[2] = db[6] = db[20] = '-'; db[11] = ' '; db[14] = db[17] = ':';
+ /* dd */
+ db[0] = t[ti - 2]; db[1] = t[ti - 1];
+ /* mmm */
+ db[3] = t[ti - 6]; db[4] = t[ti - 5]; db[5] = t[ti - 4];
+ /* hh */
+ db[12] = t[ti + 1]; db[13] = t[ti + 2];
+ /* mm */
+ db[15] = t[ti + 4]; db[16] = t[ti + 5];
+ if (t[ti += 6] == ':') { /* ss if present */
+ db[18] = t[++ti]; db[19] = t[++ti];
+ ti++; /* move to space */
+ }
+ else db[18] = db[19] = '0'; /* assume 0 seconds */
+ /* yy -- advance over timezone if necessary */
+ if (++zn == ++ti) ti += (((t[zn] == '+') || (t[zn] == '-')) ? 6 : 4);
+ db[7] = t[ti]; db[8] = t[ti + 1]; db[9] = t[ti + 2]; db[10] = t[ti + 3];
+ t = zn ? (t + zn) : "LCL"; /* zzz */
+ db[21] = *t++; db[22] = *t++; db[23] = *t++;
+ if ((db[21] != '+') && (db[21] != '-')) db[24] = '\0';
+ else { /* numeric time zone */
+ db[20] = ' '; db[24] = *t++; db[25] = *t++; db[26] = '\0';
+ }
+ /* set internal date */
+ if (!mail_parse_date (elt,db)) mm_log (datemsg,WARN);
+\f
+ curpos += s - tmp; /* advance position after header */
+ t = strchr (s,'\012'); /* start of next line */
+ /* find start of next message */
+ while (!(bezerk_valid_line (s,NIL,NIL))) {
+ if (t) { /* have next line? */
+ t++; /* advance to new line */
+ curpos += t - s; /* update position and size */
+ elt->rfc822_size += ((t - s) + ((t[-2] == '\015') ? 0 : 1));
+ s = t; /* move to next line */
+ t = strchr (s,'\012');
+ }
+ else { /* try next buffer */
+ j = strlen (s); /* length of unread data in buffer */
+ if ((i = sbuf.st_size - curpos) && (i != j)) {
+ /* get to that position in the file */
+ lseek (LOCAL->fd,curpos,SEEK_SET);
+ /* read another buffer's worth */
+ read (LOCAL->fd,s = tmp,j = (int) min (i,(long) MAILTMPLEN));
+ tmp[j] = '\0'; /* tie off buffer */
+ if (!(t = strchr (s,'\012'))) fatal ("Line too long in mailbox");
+ }
+ else {
+ curpos += j; /* last bit of data */
+ elt->rfc822_size += j;
+ break;
+ }
+ }
+ }
+ }
+ /* update parsed file size */
+ LOCAL->filesize = sbuf.st_size;
+ stream->silent = silent; /* can pass up events now */
+ 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
+/* Berkeley locate header for a message
+ * Accepts: MAIL stream
+ * message number
+ * pointer to returned header size
+ * Returns: position of header in file
+ */
+
+unsigned long bezerk_hdrpos (MAILSTREAM *stream,unsigned long msgno,
+ unsigned long *size)
+{
+ long siz;
+ size_t i = 0;
+ char c = '\0';
+ char *s;
+ char tmp[MAILTMPLEN];
+ MESSAGECACHE *elt = mail_elt (stream,msgno);
+ long pos = elt->private.special.offset + elt->private.msg.full.offset;
+ /* is 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--;
+ /* two newline sequence? */
+ if ((c == '\012') && (*s == '\012')) {
+ /* yes, note for later */
+ elt->private.msg.header.text.size = (*size = siz);
+ return pos; /* return to caller */
+ }
+ else if ((c == '\012') && (*s == '\015')) {
+ /* yes, note for later */
+ elt->private.msg.header.text.size = (*size = siz + 1);
+ return pos; /* return to caller */
+ }
+ else c = *s++; /* next character */
+ }
+ }
+ return pos; /* have position */
+}
projects / uw-imap / commitdiff