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- /*
- * Program: Dawz 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: 1 July 1993
- *
- * Copyright 1993 by the University of Washington
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appears in all copies and that both the
- * above copyright notice and this permission notice appear in supporting
- * documentation, and that the name of the University of Washington not be
- * used in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. This software is made
- * available "as is", and
- * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
- * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
- * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
- * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
- * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
-
-
- #include <stdio.h>
- #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 <io.h>
- #include "dawz.h"
- #include "rfc822.h"
- #include "misc.h"
-
- /* Dawz mail routines */
-
-
- /* Driver dispatch used by MAIL */
-
- DRIVER dawzdriver = {
- "dawz", /* driver name */
- (DRIVER *) NIL, /* next driver */
- dawz_valid, /* mailbox is valid for us */
- dawz_parameters, /* manipulate parameters */
- dawz_find, /* find mailboxes */
- dawz_find_bboards, /* find bboards */
- dawz_find_all, /* find all mailboxes */
- dawz_find_bboards, /* find all bboards */
- dawz_subscribe, /* subscribe to mailbox */
- dawz_unsubscribe, /* unsubscribe from mailbox */
- dawz_subscribe_bboard, /* subscribe to bboard */
- dawz_subscribe_bboard, /* unsubscribe (same as subscribe) */
- dawz_create, /* create mailbox */
- dawz_delete, /* delete mailbox */
- dawz_rename, /* rename mailbox */
- dawz_open, /* open mailbox */
- dawz_close, /* close mailbox */
- dawz_fetchfast, /* fetch message "fast" attributes */
- dawz_fetchflags, /* fetch message flags */
- dawz_fetchstructure, /* fetch message envelopes */
- dawz_fetchheader, /* fetch message header only */
- dawz_fetchtext, /* fetch message body only */
- dawz_fetchbody, /* fetch message body section */
- dawz_setflag, /* set message flag */
- dawz_clearflag, /* clear message flag */
- dawz_search, /* search for message based on criteria */
- dawz_ping, /* ping mailbox to see if still alive */
- dawz_check, /* check for new messages */
- dawz_expunge, /* expunge deleted messages */
- dawz_copy, /* copy messages to another mailbox */
- dawz_move, /* move messages to another mailbox */
- dawz_append, /* append string message to mailbox */
- dawz_gc /* garbage collect stream */
- };
-
- /* prototype stream */
- MAILSTREAM dawzproto = {&dawzdriver};
-
- /* Dawz mail validate mailbox
- * Accepts: mailbox name
- * Returns: our driver if name is valid, NIL otherwise
- */
-
- DRIVER *dawz_valid (char *name)
- {
- return dawz_isvalid (name) ? &dawzdriver : (DRIVER *) NIL;
- }
-
-
- /* Dawz mail test for valid mailbox
- * Accepts: mailbox name
- * Returns: T if valid, NIL otherwise
- */
-
- long dawz_isvalid (char *name)
- {
- int fd;
- char *s,tmp[MAILTMPLEN];
- struct stat sbuf;
- /* INBOX is always accepted */
- if (!strcmp (ucase (strcpy (tmp,name)),"INBOX")) return T;
- /* if file, get its status */
- if (*name != '{' && dawz_file (tmp,name) && (stat (tmp,&sbuf) == 0)) {
- /* allow empty file */
- if (sbuf.st_size == 0) return T;
- if ((fd = open (tmp,O_BINARY|O_RDONLY,NIL)) >= 0 && read (fd,tmp,64) >= 0){
- close (fd); /* close the file */
- if ((s = strchr (tmp,'\015')) && s[1] == '\012') {
- *s = '\0'; /* tie off header */
- /* must begin with dd-mmm-yy" */
- if (((tmp[2] == '-' && tmp[6] == '-') ||
- (tmp[1] == '-' && tmp[5] == '-')) &&
- (s = strchr (tmp+20,',')) && strchr (s+2,';')) return LONGT;
- }
- }
- }
- return NIL; /* failed miserably */
- }
-
-
- /* Dawz manipulate driver parameters
- * Accepts: function code
- * function-dependent value
- * Returns: function-dependent return value
- */
-
- void *dawz_parameters (long function,void *value)
- {
- fatal ("Invalid dawz_parameters function");
- }
-
- /* Dawz mail find list of mailboxes
- * Accepts: mail stream
- * pattern to search
- */
-
- void dawz_find (MAILSTREAM *stream,char *pat)
- {
- void *sdb = NIL;
- struct find_t f;
- char *s,tmp[MAILTMPLEN],file[MAILTMPLEN];
- char *t = sm_read (&sdb);
- int i = 0;
- if (t) do if ((*t != '{') && strcmp (t,"INBOX") && pmatch (t,pat) &&
- dawz_isvalid (t)) mm_mailbox (t);
- while (t = sm_read (&sdb)); /* read subscription database */
- else { /* no subscriptions, do a directory */
- /* directory specified in pattern? */
- if ((s = strrchr (pat,'\\')) || (*(s = pat + 1) == ':')) {
- strncpy (file,pat,i = (++s) - pat);
- file[i] = '\0'; /* tie off prefix */
- }
- /* make fully-qualified file name */
- if (!dawz_file (tmp,pat)) return;
- /* tie off directory name */
- if (s = strrchr (tmp,'\\')) *s = '\0';
- else tmp[2] = '\0';
- sprintf (tmp + strlen (tmp),"\\*%s",DEFEXT);
- /* loop through matching files */
- if (!_dos_findfirst (tmp,_A_NORMAL,&f)) do {
- /* suppress extension */
- if (s = strchr (f.name,'.')) *s = '\0';
- strcpy (file + i,f.name); /* build file name */
- if (pmatch (file,pat)) mm_mailbox (file);
- } while (!_dos_findnext (&f));
- }
- }
-
-
- /* Dawz mail find list of bboards
- * Accepts: mail stream
- * pattern to search
- */
-
- void dawz_find_bboards (MAILSTREAM *stream,char *pat)
- {
- /* Always a no-op */
- }
-
- /* Dawz mail find list of all mailboxes
- * Accepts: mail stream
- * pattern to search
- */
-
- void dawz_find_all (MAILSTREAM *stream,char *pat)
- {
- struct find_t f;
- char *s,tmp[MAILTMPLEN],file[MAILTMPLEN];
- int i = 0;
- /* directory specified in pattern? */
- if ((s = strrchr (pat,'\\')) || (*(s = pat + 1) == ':')) {
- strncpy (file,pat,i = (++s) - pat);
- file[i] = '\0'; /* tie off prefix */
- }
- /* make fully-qualified file name */
- if (!dawz_file (tmp,pat)) return;
- /* tie off directory name */
- if (s = strrchr (tmp,'\\')) *s = '\0';
- else tmp[2] = '\0';
- sprintf (tmp + strlen (tmp),"\\*%s",DEFEXT);
- /* loop through matching files */
- if (!_dos_findfirst (tmp,_A_NORMAL,&f)) do {
- /* suppress extension */
- if (s = strchr (f.name,'.')) *s = '\0';
- strcpy (file + i,f.name); /* build file name */
- if (pmatch (file,pat) && dawz_isvalid (file)) mm_mailbox (file);
- } while (!_dos_findnext (&f));
- }
-
- /* Dawz mail subscribe to mailbox
- * Accepts: mail stream
- * mailbox to add to subscription list
- * Returns: T on success, NIL on failure
- */
-
- long dawz_subscribe (MAILSTREAM *stream,char *mailbox)
- {
- char tmp[MAILTMPLEN];
- if (dawz_file (tmp,mailbox)) return sm_subscribe (mailbox);
- else return dawz_badname (tmp,mailbox);
- }
-
-
- /* Dawz mail unsubscribe to mailbox
- * Accepts: mail stream
- * mailbox to delete from subscription list
- * Returns: T on success, NIL on failure
- */
-
- long dawz_unsubscribe (MAILSTREAM *stream,char *mailbox)
- {
- char tmp[MAILTMPLEN];
- if (dawz_file (tmp,mailbox)) return sm_unsubscribe (mailbox);
- else return dawz_badname (tmp,mailbox);
- }
-
-
- /* Dawz mail subscribe to bboard
- * Accepts: mail stream
- * bboard to add to subscription list
- * Returns: T on success, NIL on failure
- */
-
- long dawz_subscribe_bboard (MAILSTREAM *stream,char *mailbox)
- {
- return NIL; /* never valid for Dawz */
- }
-
- /* Dawz mail create mailbox
- * Accepts: MAIL stream
- * mailbox name to create
- * Returns: T on success, NIL on failure
- */
-
- long dawz_create (MAILSTREAM *stream,char *mailbox)
- {
- char tmp[MAILTMPLEN];
- int fd;
- if (!dawz_file (tmp,mailbox)) return dawz_badname (tmp,mailbox);
- if ((fd = open (tmp,O_WRONLY|O_CREAT|O_EXCL,S_IREAD|S_IWRITE)) < 0) {
- /* failed */
- sprintf (tmp,"Can't create mailbox %s: %s",mailbox,strerror (errno));
- mm_log (tmp,ERROR);
- return NIL;
- }
- close (fd); /* close the file */
- return LONGT; /* return success */
- }
-
-
- /* Dawz mail delete mailbox
- * Accepts: MAIL stream
- * mailbox name to delete
- * Returns: T on success, NIL on failure
- */
-
- long dawz_delete (MAILSTREAM *stream,char *mailbox)
- {
- return dawz_rename (stream,mailbox,NIL);
- }
-
-
- /* Dawz mail rename mailbox
- * Accepts: MAIL stream
- * old mailbox name
- * new mailbox name (or NIL for delete)
- * Returns: T on success, NIL on failure
- */
-
- long dawz_rename (MAILSTREAM *stream,char *old,char *new)
- {
- char tmp[MAILTMPLEN],file[MAILTMPLEN],lock[MAILTMPLEN],lockx[MAILTMPLEN];
- /* make file name */
- if (!dawz_file (file,old)) return dawz_badname (tmp,old);
- if (!dawz_file (tmp,new)) return dawz_badname (tmp,new);
- /* do the rename or delete operation */
- if (new ? rename (file,tmp) : unlink (file)) {
- sprintf (tmp,"Can't %s mailbox %s: %s",new ? "rename" : "delete",old,
- strerror (errno));
- mm_log (tmp,ERROR);
- return NIL;
- }
- return LONGT; /* return success */
- }
-
- /* Dawz mail open
- * Accepts: stream to open
- * Returns: stream on success, NIL on failure
- */
-
- MAILSTREAM *dawz_open (MAILSTREAM *stream)
- {
- long i;
- int fd;
- char *s;
- char tmp[MAILTMPLEN];
- struct stat sbuf;
- /* return prototype for OP_PROTOTYPE call */
- if (!stream) return &dawzproto;
- if (LOCAL) { /* close old file if stream being recycled */
- dawz_close (stream); /* dump and save the changes */
- stream->dtb = &dawzdriver; /* reattach this driver */
- mail_free_cache (stream); /* clean up cache */
- }
- else { /* flush flagstring and flags if any */
- if (stream->flagstring) fs_give ((void **) &stream->flagstring);
- for (i = 0; i < NUSERFLAGS; ++i) stream->user_flags[i] = NIL;
- }
- if (!dawz_file (tmp,stream->mailbox))
- return (MAILSTREAM *) dawz_badname (tmp,stream->mailbox);
- if (((fd = open (tmp,O_BINARY|(stream->readonly ? O_RDONLY:O_RDWR),NIL)) < 0)
- && (strcmp (ucase (stream->mailbox),"INBOX") ||
- ((fd = open (tmp,O_BINARY|O_RDWR|O_CREAT|O_EXCL,S_IREAD|S_IWRITE))
- < 0))) { /* open, possibly creating INBOX */
- sprintf (tmp,"Can't open mailbox: %s",strerror (errno));
- mm_log (tmp,ERROR);
- return NIL;
- }
- /* hokey default for local host */
- if (!lhostn) lhostn = cpystr ("localhost");
- stream->local = fs_get (sizeof (DAWZLOCAL));
- /* 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 */
- stream->sequence++; /* bump sequence number */
- /* parse mailbox */
- stream->nmsgs = stream->recent = 0;
- if (dawz_ping (stream) && !stream->nmsgs)
- mm_log ("Mailbox is empty",(long) NIL);
- return stream; /* return stream to caller */
- }
-
- /* Dawz mail close
- * Accepts: MAIL stream
- */
-
- void dawz_close (MAILSTREAM *stream)
- {
- long i;
- if (stream && LOCAL) { /* only if a file is open */
- close (LOCAL->fd); /* close the local file */
- /* nuke the local data */
- fs_give ((void **) &stream->local);
- stream->dtb = NIL; /* log out the DTB */
- }
- }
-
-
- /* Dawz mail fetch fast information
- * Accepts: MAIL stream
- * sequence
- */
-
- void dawz_fetchfast (MAILSTREAM *stream,char *sequence)
- {
- return; /* no-op for local mail */
- }
-
-
- /* Dawz mail fetch flags
- * Accepts: MAIL stream
- * sequence
- */
-
- void dawz_fetchflags (MAILSTREAM *stream,char *sequence)
- {
- return; /* no-op for local mail */
- }
-
- /* Dawz string driver for file stringstructs */
-
- STRINGDRIVER dawz_string = {
- dawz_string_init, /* initialize string structure */
- dawz_string_next, /* get next byte in string structure */
- dawz_string_setpos /* set position in string structure */
- };
-
-
- /* Cache buffer for file stringstructs */
-
- #define DOSCHUNKLEN 4096
- char dos_chunk[DOSCHUNKLEN];
-
-
- /* Initialize dawz string structure for file stringstruct
- * Accepts: string structure
- * pointer to string
- * size of string
- */
-
- void dawz_string_init (STRING *s,void *data,unsigned long size)
- {
- DAWZDATA *d = (DAWZDATA *) data;
- s->data = (void *) d->fd; /* note fd */
- s->data1 = d->pos; /* note file offset */
- s->size = size; /* note size */
- s->curpos = s->chunk = dos_chunk;
- s->chunksize = (unsigned long) DOSCHUNKLEN;
- s->offset = 0; /* initial position */
- /* and size of data */
- s->cursize = min ((long) DOSCHUNKLEN,size);
- /* move to that position in the file */
- lseek (d->fd,d->pos,SEEK_SET);
- read (d->fd,s->chunk,(unsigned int) s->cursize);
- }
-
- /* Get next character from file stringstruct
- * Accepts: string structure
- * Returns: character, string structure chunk refreshed
- */
-
- char dawz_string_next (STRING *s)
- {
- char c = *s->curpos++; /* get next byte */
- /* move to next chunk */
- SETPOS (s,s->offset + s->chunksize);
- return c; /* return the byte */
- }
-
-
- /* Set string pointer position for file stringstruct
- * Accepts: string structure
- * new position
- */
-
- void dawz_string_setpos (STRING *s,unsigned long i)
- {
- s->offset = i; /* set new offset */
- s->curpos = s->chunk; /* reset position */
- /* set size of data */
- if (s->cursize = s->size > s->offset ? min ((long) DOSCHUNKLEN,SIZE (s)):0) {
- /* move to that position in the file */
- lseek ((int) s->data,s->data1 + s->offset,SEEK_SET);
- read ((int) s->data,s->curpos,(unsigned int) s->cursize);
- }
- }
-
- /* Dawz mail fetch structure
- * Accepts: MAIL stream
- * message # to fetch
- * pointer to return body
- * Returns: envelope of this message, body returned in body value
- *
- * Fetches the "fast" information as well
- */
-
- #define MAXHDR (unsigned long) 4*MAILTMPLEN
-
- ENVELOPE *dawz_fetchstructure (MAILSTREAM *stream,long msgno,BODY **body)
- {
- LONGCACHE *lelt;
- ENVELOPE **env;
- BODY **b;
- STRING bs;
- DAWZDATA d;
- unsigned long hdrsize;
- unsigned long hdrpos = dawz_header (stream,msgno,&hdrsize);
- unsigned long textsize = mail_elt (stream,msgno)->rfc822_size - hdrsize;
- /* limit header size */
- if (hdrsize > MAXHDR) hdrsize = MAXHDR;
- if (stream->scache) { /* short cache */
- if (msgno != stream->msgno){/* flush old poop if a different message */
- mail_free_envelope (&stream->env);
- mail_free_body (&stream->body);
- }
- stream->msgno = msgno;
- env = &stream->env; /* get pointers to envelope and body */
- b = &stream->body;
- }
- else { /* long cache */
- lelt = mail_lelt (stream,msgno);
- env = &lelt->env; /* get pointers to envelope and body */
- b = &lelt->body;
- }
-
- if ((body && !*b) || !*env) { /* have the poop we need? */
- char *hdr = (char *) fs_get (hdrsize + 1);
- char *tmp = (char *) fs_get (MAXHDR);
- mail_free_envelope (env); /* flush old envelope and body */
- mail_free_body (b);
- /* get to header position */
- lseek (LOCAL->fd,hdrpos,SEEK_SET);
- /* read the text */
- if (read (LOCAL->fd,hdr,(unsigned int) hdrsize) >= 0) {
- if (hdr[hdrsize-1] != '\012') hdr[hdrsize-1] = '\012';
- hdr[hdrsize] = '\0'; /* make sure tied off */
- d.fd = LOCAL->fd; /* set initial stringstruct */
- d.pos = hdrpos + hdrsize;
- INIT (&bs,dawz_string,(void *) &d,textsize);
- /* parse envelope and body */
- rfc822_parse_msg (env,body ? b : NIL,hdr,hdrsize,&bs,lhostn,tmp);
- }
- fs_give ((void **) &tmp);
- fs_give ((void **) &hdr);
- }
- if (body) *body = *b; /* return the body */
- return *env; /* return the envelope */
- }
-
- /* Dawz mail fetch message header
- * Accepts: MAIL stream
- * message # to fetch
- * Returns: message header in RFC822 format
- */
-
- char *dawz_fetchheader (MAILSTREAM *stream,long msgno)
- {
- unsigned long hdrsize;
- unsigned long hdrpos = dawz_header (stream,msgno,&hdrsize);
- /* set default gets routine */
- if (!mailgets) mailgets = mm_gets;
- if (stream->text) fs_give ((void **) &stream->text);
- /* get to header position */
- lseek (LOCAL->fd,hdrpos,SEEK_SET);
- return stream->text = (*mailgets) (dawz_read,stream,hdrsize);
- }
-
-
- /* Dawz mail fetch message text (body only)
- * Accepts: MAIL stream
- * message # to fetch
- * Returns: message text in RFC822 format
- */
-
- char *dawz_fetchtext (MAILSTREAM *stream,long msgno)
- {
- unsigned long hdrsize;
- unsigned long hdrpos = dawz_header (stream,msgno,&hdrsize);
- unsigned long textsize = mail_elt (stream,msgno)->rfc822_size - hdrsize;
- /* set default gets routine */
- if (!mailgets) mailgets = mm_gets;
- if (stream->text) fs_give ((void **) &stream->text);
- /* mark message as seen */
- mail_elt (stream,msgno)->seen = T;
- /* recalculate status */
- dawz_update_status (stream,msgno);
- /* get to text position */
- lseek (LOCAL->fd,hdrpos + hdrsize,SEEK_SET);
- return stream->text = (*mailgets) (dawz_read,stream,textsize);
- }
-
- /* Dawz fetch message body as a structure
- * Accepts: Mail stream
- * message # to fetch
- * section specifier
- * pointer to length
- * Returns: pointer to section of message body
- */
-
- char *dawz_fetchbody (MAILSTREAM *stream,long m,char *s,unsigned long *len)
- {
- BODY *b;
- PART *pt;
- unsigned long i;
- unsigned long base;
- unsigned long offset = 0;
- unsigned long hdrpos = dawz_header (stream,m,&base);
- MESSAGECACHE *elt = mail_elt (stream,m);
- /* set default gets routine */
- if (!mailgets) mailgets = mm_gets;
- if (stream->text) fs_give ((void **) &stream->text);
- /* make sure have a body */
- if (!(dawz_fetchstructure (stream,m,&b) && b && s && *s &&
- ((i = strtol (s,&s,10)) > 0))) return NIL;
- do { /* until find desired body part */
- /* multipart content? */
- if (b->type == TYPEMULTIPART) {
- pt = b->contents.part; /* yes, find desired part */
- while (--i && (pt = pt->next));
- if (!pt) return NIL; /* bad specifier */
- /* note new body, check valid nesting */
- if (((b = &pt->body)->type == TYPEMULTIPART) && !*s) return NIL;
- offset = pt->offset; /* get new offset */
- }
- else if (i != 1) return NIL;/* otherwise must be section 1 */
- /* need to go down further? */
- if (i = *s) switch (b->type) {
- case TYPEMESSAGE: /* embedded message, calculate new base */
- offset = b->contents.msg.offset;
- b = b->contents.msg.body; /* get its body, drop into multipart case */
- case TYPEMULTIPART: /* multipart, get next section */
- if ((*s++ == '.') && (i = strtol (s,&s,10)) > 0) break;
- default: /* bogus subpart specification */
- return NIL;
- }
- } while (i);
- /* lose if body bogus */
- if ((!b) || b->type == TYPEMULTIPART) return NIL;
- elt->seen = T; /* mark message as seen */
- dawz_update_status (stream,m);/* recalculate status */
- lseek (LOCAL->fd,hdrpos + base + offset,SEEK_SET);
- return stream->text = (*mailgets) (dawz_read,stream,*len = b->size.bytes);
- }
-
- /* Dawz mail read
- * Accepts: MAIL stream
- * number of bytes to read
- * buffer address
- * Returns: T if success, NIL otherwise
- */
-
- long dawz_read (MAILSTREAM *stream,unsigned long count,char *buffer)
- {
- return read (LOCAL->fd,buffer,(unsigned int) count) ? T : NIL;
- }
-
- /* Dawz locate header for a message
- * Accepts: MAIL stream
- * message number
- * pointer to returned header size
- * Returns: position of header in file
- */
-
- unsigned long dawz_header (MAILSTREAM *stream,long msgno,unsigned long *size)
- {
- long siz;
- long i = 0;
- int q = 0;
- char *s;
- char tmp[MAILTMPLEN];
- MESSAGECACHE *elt = mail_elt (stream,msgno);
- long pos = elt->data1 + (elt->data2 >> 24);
- /* is size known? */
- if (!(*size = (elt->data2 & (unsigned long) 0xffffff))) {
- /* get to header position */
- lseek (LOCAL->fd,pos,SEEK_SET);
- /* search message for CRLF CRLF */
- for (siz = 0; siz < elt->rfc822_size; siz++) {
- /* read another buffer as necessary */
- if (--i <= 0) /* buffer empty? */
- if (read (LOCAL->fd,s = tmp,
- i = min (elt->rfc822_size - siz,(long) MAILTMPLEN)) < 0)
- return pos; /* I/O error? */
- 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->data2 |= (*size = siz);
- return pos; /* return to caller */
- }
- q = 0; /* lost... */
- break;
- }
- }
- }
- return pos; /* have position */
- }
-
- /* Dawz mail set flag
- * Accepts: MAIL stream
- * sequence
- * flag(s)
- */
-
- void dawz_setflag (MAILSTREAM *stream,char *sequence,char *flag)
- {
- MESSAGECACHE *elt;
- long i;
- short f = dawz_getflags (stream,flag);
- if (!f) return; /* no-op if no flags to modify */
- /* get sequence and loop on it */
- if (mail_sequence (stream,sequence)) for (i = 1; i <= stream->nmsgs; i++)
- if ((elt = mail_elt (stream,i))->sequence) {
- /* set all requested flags */
- if (f&fSEEN) elt->seen = T;
- if (f&fDELETED) elt->deleted = T;
- if (f&fFLAGGED) elt->flagged = T;
- if (f&fANSWERED) elt->answered = T;
- /* recalculate status */
- dawz_update_status (stream,i);
- }
- }
-
- /* Dawz mail clear flag
- * Accepts: MAIL stream
- * sequence
- * flag(s)
- */
-
- void dawz_clearflag (MAILSTREAM *stream,char *sequence,char *flag)
- {
- MESSAGECACHE *elt;
- long i;
- short f = dawz_getflags (stream,flag);
- if (!f) return; /* no-op if no flags to modify */
- /* get sequence and loop on it */
- if (mail_sequence (stream,sequence)) for (i = 1; i <= stream->nmsgs; i++)
- if ((elt = mail_elt (stream,i))->sequence) {
- /* clear all requested flags */
- if (f&fSEEN) elt->seen = NIL;
- if (f&fDELETED) elt->deleted = NIL;
- if (f&fFLAGGED) elt->flagged = NIL;
- if (f&fANSWERED) elt->answered = NIL;
- /* recalculate status */
- dawz_update_status (stream,i);
- }
- }
-
- /* Dawz mail search for messages
- * Accepts: MAIL stream
- * search criteria
- */
-
- void dawz_search (MAILSTREAM *stream,char *criteria)
- {
- long i,n;
- char *d;
- search_t f;
- /* initially all searched */
- for (i = 1; i <= stream->nmsgs; ++i) mail_elt (stream,i)->searched = T;
- /* get first criterion */
- if (criteria && (criteria = strtok (criteria," "))) {
- /* for each criterion */
- for (; criteria; (criteria = strtok (NIL," "))) {
- f = NIL; d = NIL; n = 0; /* init then scan the criterion */
- switch (*ucase (criteria)) {
- case 'A': /* possible ALL, ANSWERED */
- if (!strcmp (criteria+1,"LL")) f = dawz_search_all;
- else if (!strcmp (criteria+1,"NSWERED")) f = dawz_search_answered;
- break;
- case 'B': /* possible BCC, BEFORE, BODY */
- if (!strcmp (criteria+1,"CC"))
- f = dawz_search_string (dawz_search_bcc,&d,&n);
- else if (!strcmp (criteria+1,"EFORE"))
- f = dawz_search_date (dawz_search_before,&n);
- else if (!strcmp (criteria+1,"ODY"))
- f = dawz_search_string (dawz_search_body,&d,&n);
- break;
- case 'C': /* possible CC */
- if (!strcmp (criteria+1,"C"))
- f = dawz_search_string (dawz_search_cc,&d,&n);
- break;
- case 'D': /* possible DELETED */
- if (!strcmp (criteria+1,"ELETED")) f = dawz_search_deleted;
- break;
- case 'F': /* possible FLAGGED, FROM */
- if (!strcmp (criteria+1,"LAGGED")) f = dawz_search_flagged;
- else if (!strcmp (criteria+1,"ROM"))
- f = dawz_search_string (dawz_search_from,&d,&n);
- break;
- case 'K': /* possible KEYWORD */
- if (!strcmp (criteria+1,"EYWORD"))
- f = dawz_search_flag (dawz_search_keyword,&n,stream);
- break;
- case 'N': /* possible NEW */
- if (!strcmp (criteria+1,"EW")) f = dawz_search_new;
- break;
-
- case 'O': /* possible OLD, ON */
- if (!strcmp (criteria+1,"LD")) f = dawz_search_old;
- else if (!strcmp (criteria+1,"N"))
- f = dawz_search_date (dawz_search_on,&n);
- break;
- case 'R': /* possible RECENT */
- if (!strcmp (criteria+1,"ECENT")) f = dawz_search_recent;
- break;
- case 'S': /* possible SEEN, SINCE, SUBJECT */
- if (!strcmp (criteria+1,"EEN")) f = dawz_search_seen;
- else if (!strcmp (criteria+1,"INCE"))
- f = dawz_search_date (dawz_search_since,&n);
- else if (!strcmp (criteria+1,"UBJECT"))
- f = dawz_search_string (dawz_search_subject,&d,&n);
- break;
- case 'T': /* possible TEXT, TO */
- if (!strcmp (criteria+1,"EXT"))
- f = dawz_search_string (dawz_search_text,&d,&n);
- else if (!strcmp (criteria+1,"O"))
- f = dawz_search_string (dawz_search_to,&d,&n);
- break;
- case 'U': /* possible UN* */
- if (criteria[1] == 'N') {
- if (!strcmp (criteria+2,"ANSWERED")) f = dawz_search_unanswered;
- else if (!strcmp (criteria+2,"DELETED")) f = dawz_search_undeleted;
- else if (!strcmp (criteria+2,"FLAGGED")) f = dawz_search_unflagged;
- else if (!strcmp (criteria+2,"KEYWORD"))
- f = dawz_search_flag (dawz_search_unkeyword,&n,stream);
- else if (!strcmp (criteria+2,"SEEN")) f = dawz_search_unseen;
- }
- break;
- default: /* we will barf below */
- break;
- }
- if (!f) { /* if can't determine any criteria */
- mm_log ("Unknown search criterion",ERROR);
- return;
- }
- /* run the search criterion */
- for (i = 1; i <= stream->nmsgs; ++i)
- if (mail_elt (stream,i)->searched && !(*f) (stream,i,d,n))
- mail_elt (stream,i)->searched = NIL;
- }
- /* report search results to main program */
- for (i = 1; i <= stream->nmsgs; ++i)
- if (mail_elt (stream,i)->searched) mail_searched (stream,i);
- }
- }
-
- /* Dawz mail ping mailbox
- * Accepts: MAIL stream
- * Returns: T if stream still alive, NIL if not
- */
-
- long dawz_ping (MAILSTREAM *stream)
- {
- long i = 0;
- long r,j;
- struct stat sbuf;
- /* punt if stream no longer alive */
- if (!(stream && LOCAL)) return NIL;
- /* parse mailbox, punt if parse dies */
- return (dawz_parse (stream)) ? T : NIL;
- }
-
-
- /* Dawz mail check mailbox (reparses status too)
- * Accepts: MAIL stream
- */
-
- void dawz_check (MAILSTREAM *stream)
- {
- long i = 1;
- if (dawz_ping (stream)) { /* ping mailbox */
- /* get new message status */
- while (i <= stream->nmsgs) mail_elt (stream,i++);
- mm_log ("Check completed",(long) NIL);
- }
- }
-
- /* Dawz mail expunge mailbox
- * Accepts: MAIL stream
- */
-
- void dawz_expunge (MAILSTREAM *stream)
- {
- unsigned long i = 1;
- unsigned long j,k,m,recent;
- unsigned long n = 0;
- unsigned long delta = 0;
- MESSAGECACHE *elt;
- char tmp[MAILTMPLEN];
- /* do nothing if stream dead */
- if (!dawz_ping (stream)) return;
- if (stream->readonly) { /* won't do on readonly files! */
- mm_log ("Expunge ignored on readonly mailbox",WARN);
- return;
- }
- mm_critical (stream); /* go critical */
- recent = stream->recent; /* get recent now that pinged */
- while (i <= stream->nmsgs) { /* for each message */
- /* if deleted */
- if ((elt = mail_elt (stream,i))->deleted) {
- if (elt->recent) --recent;/* if recent, note one less recent message */
- /* number of bytes to delete */
- delta += (elt->data2 >> 24) + elt->rfc822_size;
- mail_expunged (stream,i); /* notify upper levels */
- n++; /* count up one more deleted message */
- }
- else if (i++ && delta) { /* preserved message */
- j = elt->data1; /* j is byte to copy, k is number of bytes */
- k = (elt->data2 >> 24) + elt->rfc822_size;
- do { /* read from source position */
- m = min (k,(unsigned long) MAILTMPLEN);
- lseek (LOCAL->fd,j,SEEK_SET);
- read (LOCAL->fd,tmp,(unsigned int) m);
- /* write to destination position */
- lseek (LOCAL->fd,j - delta,SEEK_SET);
- write (LOCAL->fd,tmp,(unsigned int) m);
- j += m; /* next chunk, perhaps */
- } while (k -= m); /* until done */
- elt->data1 -= delta; /* note the new address of this text */
- }
- }
- 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);
- }
-
- /* Dawz mail copy message(s)
- * Accepts: MAIL stream
- * sequence
- * destination mailbox
- * Returns: T if success, NIL if failed
- */
-
- long dawz_copy (MAILSTREAM *stream,char *sequence,char *mailbox)
- {
- /* copy the messages */
- return (mail_sequence (stream,sequence)) ?
- dawz_copy_messages (stream,mailbox) : NIL;
- }
-
-
- /* Dawz mail move message(s)
- * Accepts: MAIL stream
- * sequence
- * destination mailbox
- * Returns: T if success, NIL if failed
- */
-
- long dawz_move (MAILSTREAM *stream,char *sequence,char *mailbox)
- {
- long i;
- MESSAGECACHE *elt;
- if (!(mail_sequence (stream,sequence) &&
- dawz_copy_messages (stream,mailbox))) return NIL;
- /* delete all requested messages */
- for (i = 1; i <= stream->nmsgs; i++)
- if ((elt = mail_elt (stream,i))->sequence) {
- elt->deleted = T; /* mark message deleted */
- /* recalculate status */
- dawz_update_status (stream,i);
- }
- return T;
- }
-
- /* Dawz mail append message from stringstruct
- * Accepts: MAIL stream
- * destination mailbox
- * stringstruct of messages to append
- * Returns: T if append successful, else NIL
- */
-
- long dawz_append (MAILSTREAM *stream,char *mailbox,STRING *message)
- {
- int fd;
- struct stat sbuf;
- char tmp[MAILTMPLEN];
- time_t ti;
- struct tm *t;
- long i;
- long size = SIZE (message);
- tzset (); /* initialize timezone stuff */
- /* make sure valid mailbox */
- if (!dawz_isvalid (mailbox)) {
- sprintf (tmp,"Not a Dawz-format mailbox: %s",mailbox);
- mm_log (tmp,ERROR);
- return NIL;
- }
- if (!dawz_file (tmp,mailbox)) return dawz_badname (tmp,mailbox);
- /* open the destination */
- if ((fd = open (tmp,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,S_IREAD|S_IWRITE))<0){
- 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 */
- ti = time (0); /* get time now */
- t = localtime (&ti); /* output local time */
- sprintf (tmp,"%2d-%s-%d %02d:%02d:%02d-%s,%ld;000000000000\015\012",
- t->tm_mday,months[t->tm_mon],t->tm_year+1900,
- t->tm_hour,t->tm_min,t->tm_sec,tzname[t->tm_isdst],size);
-
- /* write header */
- if (write (fd,tmp,strlen (tmp)) < 0) {
- sprintf (tmp,"Header write failed: %s",strerror (errno));
- mm_log (tmp,ERROR);
- chsize (fd,sbuf.st_size);
- }
- else while (size) { /* while there is more data to write */
- if (write (fd,message->curpos,i = min (size,message->cursize)) < 0) {
- sprintf (tmp,"Message append failed: %s",strerror (errno));
- mm_log (tmp,ERROR);
- chsize (fd,sbuf.st_size);
- break;
- }
- size -= i; /* note that we wrote out this much */
- message->curpos += i;
- message->cursize -= i;
- (message->dtb->next) (message);
- }
- close (fd); /* close the file */
- mm_nocritical (stream); /* release critical */
- return T; /* return success */
- }
-
-
- /* Dawz garbage collect stream
- * Accepts: Mail stream
- * garbage collection flags
- */
-
- void dawz_gc (MAILSTREAM *stream,long gcflags)
- {
- /* nothing here for now */
- }
-
- /* Internal routines */
-
-
- /* Dawz mail generate file string
- * Accepts: temporary buffer to write into
- * mailbox name string
- * Returns: local file string
- */
-
- char *dawz_file (char *dst,char *name)
- {
- char *s;
- /* forbid extensions of filename */
- if (strchr ((s = strrchr (name,'\\')) ? s : name,'.')) return NIL;
- /* absolute path name? */
- if ((*name == '\\') || (name[1] == ':')) sprintf (dst,"%s%s",name,DEFEXT);
- else sprintf (dst,"%s\\%s%s",myhomedir (),name,DEFEXT);
- return ucase (dst);
- }
-
-
- /* Return bad file name error message
- * Accepts: temporary buffer
- * file name
- * Returns: long NIL always
- */
-
- long dawz_badname (char *tmp,char *s)
- {
- sprintf (tmp,"Invalid mailbox name: %s",s);
- mm_log (tmp,ERROR);
- return (long) NIL;
- }
-
- /* Parse flag list
- * Accepts: MAIL stream
- * flag list as a character string
- * Returns: system flags
- */
-
- long dawz_getflags (MAILSTREAM *stream,char *flag)
- {
- char tmp[MAILTMPLEN];
- char key[MAILTMPLEN];
- char *t,*s;
- short f = 0;
- long i;
- short j;
- if (flag && *flag) { /* no-op if no flag string */
- /* check if a list and make sure valid */
- if ((i = (*flag == '(')) ^ (flag[strlen (flag)-1] == ')')) {
- mm_log ("Bad flag list",ERROR);
- return NIL;
- }
- /* copy the flag string w/o list construct */
- strncpy (tmp,flag+i,(j = strlen (flag) - (2*i)));
- tmp[j] = '\0'; /* tie off tail */
-
- /* make uppercase, find first, parse */
- if (t = strtok (ucase (tmp)," ")) do {
- i = 0; /* no flag yet */
- /* system flag, dispatch on first character */
- if (*t == '\\') switch (*++t) {
- case 'S': /* possible \Seen flag */
- if (t[1] == 'E' && t[2] == 'E' && t[3] == 'N' && t[4] == '\0')
- f |= i = fSEEN;
- break;
- case 'D': /* possible \Deleted flag */
- if (t[1] == 'E' && t[2] == 'L' && t[3] == 'E' && t[4] == 'T' &&
- t[5] == 'E' && t[6] == 'D' && t[7] == '\0') f |= i = fDELETED;
- break;
- case 'F': /* possible \Flagged flag */
- if (t[1] == 'L' && t[2] == 'A' && t[3] == 'G' && t[4] == 'G' &&
- t[5] == 'E' && t[6] == 'D' && t[7] == '\0') f |= i = fFLAGGED;
- break;
- case 'A': /* possible \Answered flag */
- if (t[1] == 'N' && t[2] == 'S' && t[3] == 'W' && t[4] == 'E' &&
- t[5] == 'R' && t[6] == 'E' && t[7] == 'D' && t[8] == '\0')
- f |= i = fANSWERED;
- break;
- default: /* unknown */
- break;
- }
- if (!i) { /* didn't find a matching flag? */
- sprintf (key,"Unknown flag: %.80s",t);
- mm_log (key,ERROR);
- return NIL; /* return no system flags */
- }
- /* parse next flag */
- } while (t = strtok (NIL," "));
- }
- return f;
- }
-
- /* Dawz mail parse mailbox
- * Accepts: MAIL stream
- * Returns: T if parse OK
- * NIL if failure, stream aborted
- */
-
- long dawz_parse (MAILSTREAM *stream)
- {
- struct stat sbuf;
- MESSAGECACHE *elt = NIL;
- char c,*s,*t;
- 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 */
- mm_log ("Mailbox shrank!",ERROR);
- dawz_close (stream);
- 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 (!((read (LOCAL->fd,tmp,64) > 0)
- && (s = strchr (tmp,'\015')) && (s[1] == '\012'))) {
- mm_log ("Unable to read internal header line",ERROR);
- dawz_close (stream);
- return NIL;
- }
- *s = '\0'; /* tie off header line */
- i = (s + 2) - tmp; /* note start of text offset */
- if (!((s = strchr (tmp,',')) && (t = strchr (s+1,';')))) {
- mm_log ("Unable to parse internal header line",ERROR);
- dawz_close (stream);
- return NIL;
- }
- *s++ = '\0'; *t++ = '\0'; /* tie off fields */
- /* intantiate an elt for this message */
- elt = mail_elt (stream,++nmsgs);
- elt->data1 = curpos; /* note file offset of header */
- elt->data2 = i << 24; /* as well as offset from header of message */
- /* parse the header components */
- if (!(mail_parse_date (elt,tmp) &&
- (elt->rfc822_size = strtol (s,&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])) {
- mm_log ("Unable to parse internal header line components",ERROR);
- dawz_close (stream);
- 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 (curpos > sbuf.st_size) {
- mm_log ("Last message runs past end of file",ERROR);
- dawz_close (stream);
- 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 */
- }
-
- /* Dawz copy messages
- * Accepts: MAIL stream
- * mailbox copy vector
- * mailbox name
- * Returns: T if success, NIL if failed
- */
-
- long dawz_copy_messages (MAILSTREAM *stream,char *mailbox)
- {
- char tmp[MAILTMPLEN];
- struct stat sbuf;
- MESSAGECACHE *elt;
- unsigned long i,j,k;
- int fd;
- /* got file? */
- if (!dawz_file (tmp,mailbox)) return dawz_badname (tmp,mailbox);
- if ((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;
- }
- 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,dawz_header (stream,i,&k),SEEK_SET);
- j = 0; /* mark first time through */
- do { /* read from source position */
- if (j) { /* get another message chunk */
- k = min (j,(unsigned long) MAILTMPLEN);
- read (LOCAL->fd,tmp,(unsigned int) k);
- }
- else { /* first time through */
- mail_date (tmp,elt); /* make a header */
- sprintf (tmp + strlen (tmp),",%d;000000000000\015\012",
- elt->rfc822_size);
- k = strlen (tmp); /* size of header string */
- /* amount of data to write subsequently */
- j = elt->rfc822_size + 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 */
- return T;
- }
-
- /* Dawz update status string
- * Accepts: MAIL stream
- * message number
- */
-
- void dawz_update_status (MAILSTREAM *stream,long msgno)
- {
- char tmp[MAILTMPLEN];
- MESSAGECACHE *elt = mail_elt (stream,msgno);
- unsigned long j,k = 0;
- if (stream->readonly) return; /* not if readonly you don't */
- j = elt->user_flags; /* get user flags */
- /* reverse bits (dontcha wish we had CIRC?) */
- while (j) k |= 1 << 29 - find_rightmost_bit (&j);
- /* print new flag string */
- sprintf (tmp,"%010lo%02o",k,(fSEEN * elt->seen) + (fDELETED * elt->deleted) +
- (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered));
- /* get to that place in the file */
- lseek (LOCAL->fd,(off_t) elt->data1 + (elt->data2 >> 24) - 14,SEEK_SET);
- write (LOCAL->fd,tmp,12); /* write new flags */
- }
-
- /* Search support routines
- * Accepts: MAIL stream
- * message number
- * pointer to additional data
- * Returns: T if search matches, else NIL
- */
-
-
- char dawz_search_all (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return T; /* ALL always succeeds */
- }
-
-
- char dawz_search_answered (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->answered ? T : NIL;
- }
-
-
- char dawz_search_deleted (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->deleted ? T : NIL;
- }
-
-
- char dawz_search_flagged (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->flagged ? T : NIL;
- }
-
-
- char dawz_search_keyword (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return NIL;
- }
-
-
- char dawz_search_new (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- MESSAGECACHE *elt = mail_elt (stream,msgno);
- return (elt->recent && !elt->seen) ? T : NIL;
- }
-
- char dawz_search_old (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->recent ? NIL : T;
- }
-
-
- char dawz_search_recent (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->recent ? T : NIL;
- }
-
-
- char dawz_search_seen (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->seen ? T : NIL;
- }
-
-
- char dawz_search_unanswered (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->answered ? NIL : T;
- }
-
-
- char dawz_search_undeleted (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->deleted ? NIL : T;
- }
-
-
- char dawz_search_unflagged (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->flagged ? NIL : T;
- }
-
-
- char dawz_search_unkeyword (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return NIL;
- }
-
-
- char dawz_search_unseen (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return mail_elt (stream,msgno)->seen ? NIL : T;
- }
-
- char dawz_search_before (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- MESSAGECACHE *elt = mail_elt (stream,msgno);
- return (char) (((elt->year << 9) + (elt->month << 5) + elt->day) < n);
- }
-
-
- char dawz_search_on (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- MESSAGECACHE *elt = mail_elt (stream,msgno);
- return (char) (((elt->year << 9) + (elt->month << 5) + elt->day) == n);
- }
-
-
- char dawz_search_since (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- /* everybody interprets "since" as .GE. */
- MESSAGECACHE *elt = mail_elt (stream,msgno);
- return (char) (((elt->year << 9) + (elt->month << 5) + elt->day) >= n);
- }
-
-
- char dawz_search_body (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return NIL; /* need code here */
- }
-
-
- char dawz_search_subject (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- char *s = dawz_fetchstructure (stream,msgno,NIL)->subject;
- return s ? search (s,(long) strlen (s),d,n) : NIL;
- }
-
-
- char dawz_search_text (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- return NIL; /* need code here */
- }
-
- char dawz_search_bcc (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- char tmp[8*MAILTMPLEN];
- tmp[0] = '\0'; /* initially empty string */
- /* get text for address */
- rfc822_write_address (tmp,dawz_fetchstructure (stream,msgno,NIL)->bcc);
- return search (tmp,(long) strlen (tmp),d,n);
- }
-
-
- char dawz_search_cc (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- char tmp[8*MAILTMPLEN];
- tmp[0] = '\0'; /* initially empty string */
- /* get text for address */
- rfc822_write_address (tmp,dawz_fetchstructure (stream,msgno,NIL)->cc);
- return search (tmp,(long) strlen (tmp),d,n);
- }
-
-
- char dawz_search_from (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- char tmp[8*MAILTMPLEN];
- tmp[0] = '\0'; /* initially empty string */
- /* get text for address */
- rfc822_write_address (tmp,dawz_fetchstructure (stream,msgno,NIL)->from);
- return search (tmp,(long) strlen (tmp),d,n);
- }
-
-
- char dawz_search_to (MAILSTREAM *stream,long msgno,char *d,long n)
- {
- char tmp[8*MAILTMPLEN];
- tmp[0] = '\0'; /* initially empty string */
- /* get text for address */
- rfc822_write_address (tmp,dawz_fetchstructure (stream,msgno,NIL)->to);
- return search (tmp,(long) strlen (tmp),d,n);
- }
-
- /* Search parsers */
-
-
- /* Parse a date
- * Accepts: function to return
- * pointer to date integer to return
- * Returns: function to return
- */
-
- search_t dawz_search_date (search_t f,long *n)
- {
- long i;
- char *s;
- MESSAGECACHE elt;
- /* parse the date and return fn if OK */
- return (dawz_search_string (f,&s,&i) && mail_parse_date (&elt,s) &&
- (*n = (elt.year << 9) + (elt.month << 5) + elt.day)) ? f : NIL;
- }
-
- /* Parse a flag
- * Accepts: function to return
- * pointer to keyword integer to return
- * MAIL stream
- * Returns: function to return
- */
-
- search_t dawz_search_flag (search_t f,long *n,MAILSTREAM *stream)
- {
- strtok (NIL," "); /* slurp keyword */
- return f;
- }
-
- /* Parse a string
- * Accepts: function to return
- * pointer to string to return
- * pointer to string length to return
- * Returns: function to return
- */
-
-
- search_t dawz_search_string (search_t f,char **d,long *n)
- {
- char *c = strtok (NIL,""); /* remainder of criteria */
- if (c) { /* better be an argument */
- switch (*c) { /* see what the argument is */
- case '\0': /* catch bogons */
- case ' ':
- return NIL;
- case '"': /* quoted string */
- if (!(strchr (c+1,'"') && (*d = strtok (c,"\"")) && (*n = strlen (*d))))
- return NIL;
- break;
- case '{': /* literal string */
- *n = strtol (c+1,&c,10); /* get its length */
- if (*c++ != '}' || *c++ != '\015' || *c++ != '\012' ||
- *n > strlen (*d = c)) return NIL;
- c[*n] = '\255'; /* write new delimiter */
- strtok (c,"\255"); /* reset the strtok mechanism */
- break;
- default: /* atomic string */
- *n = strlen (*d = strtok (c," "));
- break;
- }
- return f;
- }
- else return NIL;
- }
-