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mh.c
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C/C++ Source or Header
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1996-05-15
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45KB
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1,648 lines
/*
* Program: MH mail routines
*
* Author(s): Mark Crispin
* Networks and Distributed Computing
* Computing & Communications
* University of Washington
* Administration Building, AG-44
* Seattle, WA 98195
* Internet: MRC@CAC.Washington.EDU
*
* Date: 23 February 1992
* Last Edited: 15 May 1996
*
* Copyright 1996 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>
extern int errno; /* just in case */
#include "mail.h"
#include "osdep.h"
#include <pwd.h>
#include <sys/stat.h>
#include <sys/time.h>
#include "mh.h"
#include "rfc822.h"
#include "misc.h"
#include "dummy.h"
/* MH mail routines */
/* Driver dispatch used by MAIL */
DRIVER mhdriver = {
"mh", /* driver name */
(DRIVER *) NIL, /* next driver */
mh_valid, /* mailbox is valid for us */
mh_parameters, /* manipulate parameters */
mh_find, /* find mailboxes */
mh_find_bboards, /* find bboards */
mh_find_all, /* find all mailboxes */
mh_find_all_bboards, /* find all bboards */
mh_subscribe, /* subscribe to mailbox */
mh_unsubscribe, /* unsubscribe from mailbox */
mh_subscribe_bboard, /* subscribe to bboard */
mh_unsubscribe_bboard, /* unsubscribe from bboard */
mh_create, /* create mailbox */
mh_delete, /* delete mailbox */
mh_rename, /* rename mailbox */
mh_open, /* open mailbox */
mh_close, /* close mailbox */
mh_fetchfast, /* fetch message "fast" attributes */
mh_fetchflags, /* fetch message flags */
mh_fetchstructure, /* fetch message envelopes */
mh_fetchheader, /* fetch message header only */
mh_fetchtext, /* fetch message body only */
mh_fetchbody, /* fetch message body section */
mh_setflag, /* set message flag */
mh_clearflag, /* clear message flag */
mh_search, /* search for message based on criteria */
mh_ping, /* ping mailbox to see if still alive */
mh_check, /* check for new messages */
mh_expunge, /* expunge deleted messages */
mh_copy, /* copy messages to another mailbox */
mh_move, /* move messages to another mailbox */
mh_append, /* append string message to mailbox */
mh_gc /* garbage collect stream */
};
/* prototype stream */
MAILSTREAM mhproto = {&mhdriver};
/* MH mail validate mailbox
* Accepts: mailbox name
* Returns: our driver if name is valid, NIL otherwise
*/
DRIVER *mh_valid (name)
char *name;
{
char tmp[MAILTMPLEN];
return mh_isvalid (name,tmp,T) ? &mhdriver : NIL;
}
/* MH mail test for valid mailbox
* Accepts: mailbox name
* temporary buffer to use
* syntax only test flag
* Returns: T if valid, NIL otherwise
*/
static char *mh_path = NIL; /* holds MH path name */
static long mh_once = 0; /* already through this code */
int mh_isvalid (name,tmp,synonly)
char *name;
char *tmp;
long synonly;
{
struct stat sbuf;
if (!mh_path) { /* have MH path yet? */
char *s,*s1,*t,*v;
int fd;
if (mh_once++) return NIL; /* only do this code once */
sprintf (tmp,"%s/%s",myhomedir (),MHPROFILE);
if ((fd = open (tmp,O_RDONLY,NIL)) < 0) return NIL;
fstat (fd,&sbuf); /* yes, get size and read file */
read (fd,(s1 = t = (char *) fs_get (sbuf.st_size + 1)),sbuf.st_size);
close (fd); /* don't need the file any more */
t[sbuf.st_size] = '\0'; /* tie it off */
/* parse profile file */
while (*(s = t) && (t = strchr (s,'\n'))) {
*t++ = '\0'; /* tie off line */
/* found space in line? */
if (v = strpbrk (s," \t")) {
*v = '\0'; /* tie off, is keyword "Path:"? */
if (!strcmp (lcase (s),"path:")) {
if (*++v == '/') s = v;
else sprintf (s = tmp,"%s/%s",myhomedir (),v);
mh_path = cpystr (s); /* copy name */
break; /* don't need to look at rest of file */
}
}
}
fs_give ((void **) &s1); /* flush profile text */
if (!mh_path) { /* default path if not in the profile */
sprintf (tmp,"%s/%s",myhomedir (),MHPATH);
mh_path = cpystr (tmp);
}
}
/* name must be #MHINBOX or #mh/... */
if (strcmp (ucase (strcpy (tmp,name)),"#MHINBOX") &&
!(tmp[0] == '#' && tmp[1] == 'M' && tmp[2] == 'H' && tmp[3] == '/')) {
errno = EINVAL; /* bogus name */
return NIL;
}
/* all done if syntax only check */
if (synonly && tmp[0] == '#') return T;
errno = NIL; /* zap error */
/* validate name as directory */
return ((stat (mh_file (tmp,name),&sbuf) == 0) &&
(sbuf.st_mode & S_IFMT) == S_IFDIR);
}
/* MH manipulate driver parameters
* Accepts: function code
* function-dependent value
* Returns: function-dependent return value
*/
void *mh_parameters (function,value)
long function;
void *value;
{
return NIL;
}
/* MH mail find list of mailboxes
* Accepts: mail stream
* pattern to search
*/
void mh_find (stream,pat)
MAILSTREAM *stream;
char *pat;
{
void *s = NIL;
char *t,tmp[MAILTMPLEN];
/* read subscription database */
if (stream) while (t = sm_read (&s))
if (pmatch (t,pat) && mh_isvalid (t,tmp,T)) mm_mailbox (t);
}
/* MH mail find list of bboards
* Accepts: mail stream
* pattern to search
*/
void mh_find_bboards (stream,pat)
MAILSTREAM *stream;
char *pat;
{
/* Always a no-op */
}
/* MH mail find list of all mailboxes
* Accepts: mail stream
* pattern to search
*/
void mh_find_all (stream,pat)
MAILSTREAM *stream;
char *pat;
{
DIR *dirp;
struct direct *d;
char tmp[MAILTMPLEN],file[MAILTMPLEN];
int i = 0;
char *s,*t;
if (!(pat[0] == '#' && (pat[1] == 'm' || pat[1] == 'M') &&
(pat[2] == 'h' || pat[2] == 'H') && pat[3] == '/')) return;
/* must have a path */
if (!mh_path) mh_isvalid ("#MHINBOX",tmp,T);
if (!mh_path) return; /* sorry */
memset (tmp,'\0',MAILTMPLEN); /* init directory */
strcpy (tmp,mh_path);
memset (file,'\0',MAILTMPLEN);/* and mh mailbox name */
strcpy (file,"#mh/");
/* directory specified in pattern, copy it */
if (s = strrchr (pat + 4,'/')) {
strncat (tmp,pat + 3,i = s - (pat + 3));
strncat (file,pat + 4,i);
}
i = strlen (file); /* length of prefix */
if (dirp = opendir (tmp)) { /* now open that directory */
while (d = readdir (dirp)) {/* for each directory entry */
strcpy (file + i,d->d_name);
if (((d->d_name[0] != '.') ||
(d->d_name[1] && ((d->d_name[1] != '.') || d->d_name[2]))) &&
pmatch (file,pat) && (mh_isvalid (file,tmp,NIL))) mm_mailbox (file);
}
closedir (dirp); /* flush directory */
}
}
/* MH mail find list of all bboards
* Accepts: mail stream
* pattern to search
*/
void mh_find_all_bboards (stream,pat)
MAILSTREAM *stream;
char *pat;
{
/* Always a no-op */
}
/* MH mail subscribe to mailbox
* Accepts: mail stream
* mailbox to add to subscription list
* Returns: T on success, NIL on failure
*/
long mh_subscribe (stream,mailbox)
MAILSTREAM *stream;
char *mailbox;
{
char tmp[MAILTMPLEN];
return sm_subscribe (mailbox);
}
/* MH mail unsubscribe to mailbox
* Accepts: mail stream
* mailbox to delete from subscription list
* Returns: T on success, NIL on failure
*/
long mh_unsubscribe (stream,mailbox)
MAILSTREAM *stream;
char *mailbox;
{
char tmp[MAILTMPLEN];
return sm_unsubscribe (mailbox);
}
/* MH mail subscribe to bboard
* Accepts: mail stream
* bboard to add to subscription list
* Returns: T on success, NIL on failure
*/
long mh_subscribe_bboard (stream,mailbox)
MAILSTREAM *stream;
char *mailbox;
{
return NIL; /* never valid for MH */
}
/* MH mail unsubscribe to bboard
* Accepts: mail stream
* bboard to delete from subscription list
* Returns: T on success, NIL on failure
*/
long mh_unsubscribe_bboard (stream,mailbox)
MAILSTREAM *stream;
char *mailbox;
{
return NIL; /* never valid for MH */
}
/* MH mail create mailbox
* Accepts: mail stream
* mailbox name to create
* Returns: T on success, NIL on failure
*/
long mh_create (stream,mailbox)
MAILSTREAM *stream;
char *mailbox;
{
char tmp[MAILTMPLEN];
if (!(mailbox[0] == '#' && (mailbox[1] == 'm' || mailbox[1] == 'M') &&
(mailbox[2] == 'h' || mailbox[2] == 'H') && mailbox[3] == '/')) {
sprintf (tmp,"Can't create mailbox %s: invalid MH-format name",mailbox);
mm_log (tmp,ERROR);
return NIL;
}
/* must not already exist */
if (mh_isvalid (mailbox,tmp,NIL)) {
sprintf (tmp,"Can't create mailbox %s: mailbox already exists",mailbox);
mm_log (tmp,ERROR);
return NIL;
}
if (!mh_path) return NIL; /* sorry */
sprintf (tmp,"%s/%s",mh_path,mailbox + 4);
if (mkdir (tmp,0700)) { /* try to make it */
sprintf (tmp,"Can't create mailbox %s: %s",mailbox,strerror (errno));
mm_log (tmp,ERROR);
return NIL;
}
return T; /* return success */
}
/* MH mail delete mailbox
* mailbox name to delete
* Returns: T on success, NIL on failure
*/
long mh_delete (stream,mailbox)
MAILSTREAM *stream;
char *mailbox;
{
DIR *dirp;
struct direct *d;
int i;
char tmp[MAILTMPLEN];
if (!(mailbox[0] == '#' && (mailbox[1] == 'm' || mailbox[1] == 'M') &&
(mailbox[2] == 'h' || mailbox[2] == 'H') && mailbox[3] == '/')) {
sprintf (tmp,"Can't delete mailbox %s: invalid MH-format name",mailbox);
mm_log (tmp,ERROR);
return NIL;
}
/* is mailbox valid? */
if (!mh_isvalid (mailbox,tmp,NIL)){
sprintf (tmp,"Can't delete mailbox %s: no such mailbox",mailbox);
mm_log (tmp,ERROR);
return NIL;
}
/* get name of directory */
i = strlen (mh_file (tmp,mailbox));
if (dirp = opendir (tmp)) { /* open directory */
tmp[i++] = '/'; /* now apply trailing delimiter */
while (d = readdir (dirp)) /* massacre all numeric or comma files */
if (mh_select (d) || *d->d_name == ',') {
strcpy (tmp + i,d->d_name);
unlink (tmp); /* sayonara */
}
closedir (dirp); /* flush directory */
}
/* try to remove the directory */
if (rmdir (mh_file (tmp,mailbox))) {
sprintf (tmp,"Can't delete mailbox %s: %s",mailbox,strerror (errno));
mm_log (tmp,ERROR);
return NIL;
}
return T; /* return success */
}
/* MH mail rename mailbox
* Accepts: MH mail stream
* old mailbox name
* new mailbox name
* Returns: T on success, NIL on failure
*/
long mh_rename (stream,old,new)
MAILSTREAM *stream;
char *old;
char *new;
{
char tmp[MAILTMPLEN],tmp1[MAILTMPLEN];
if (!(old[0] == '#' && (old[1] == 'm' || old[1] == 'M') &&
(old[2] == 'h' || old[2] == 'H') && old[3] == '/')) {
sprintf (tmp,"Can't delete mailbox %s: invalid MH-format name",old);
mm_log (tmp,ERROR);
return NIL;
}
/* old mailbox name must be valid */
if (!mh_isvalid (old,tmp,NIL)) {
sprintf (tmp,"Can't rename mailbox %s: no such mailbox",old);
mm_log (tmp,ERROR);
return NIL;
}
if (!(new[0] == '#' && (new[1] == 'm' || new[1] == 'M') &&
(new[2] == 'h' || new[2] == 'H') && new[3] == '/')) {
sprintf (tmp,"Can't rename to mailbox %s: invalid MH-format name",new);
mm_log (tmp,ERROR);
return NIL;
}
if (mh_isvalid (new,tmp,NIL)){/* new mailbox name must not be valid */
sprintf (tmp,"Can't rename to mailbox %s: destination already exists",new);
mm_log (tmp,ERROR);
return NIL;
}
/* try to rename the directory */
if (rename (mh_file (tmp,old),mh_file (tmp1,new))) {
sprintf (tmp,"Can't rename mailbox %s to %s: %s",old,new,strerror (errno));
mm_log (tmp,ERROR);
return NIL;
}
return T; /* return success */
}
/* MH mail open
* Accepts: stream to open
* Returns: stream on success, NIL on failure
*/
MAILSTREAM *mh_open (stream)
MAILSTREAM *stream;
{
char tmp[MAILTMPLEN];
if (!stream) return &mhproto; /* return prototype for OP_PROTOTYPE call */
if (LOCAL) { /* close old file if stream being recycled */
mh_close (stream); /* dump and save the changes */
stream->dtb = &mhdriver; /* reattach this driver */
mail_free_cache (stream); /* clean up cache */
}
stream->local = fs_get (sizeof (MHLOCAL));
/* note if an INBOX or not */
LOCAL->inbox = !strcmp (ucase (strcpy (tmp,stream->mailbox)),"#MHINBOX");
mh_file (tmp,stream->mailbox);/* get directory name */
LOCAL->dir = cpystr (tmp); /* copy directory name for later */
LOCAL->hdr = NIL; /* no current header */
/* make temporary buffer */
LOCAL->buf = (char *) fs_get ((LOCAL->buflen = MAXMESSAGESIZE) + 1);
LOCAL->scantime = 0; /* not scanned yet */
stream->sequence++; /* bump sequence number */
/* parse mailbox */
stream->nmsgs = stream->recent = 0;
if (mh_ping (stream) && !(stream->nmsgs || stream->silent))
mm_log ("Mailbox is empty",(long) NIL);
return stream; /* return stream to caller */
}
/* MH mail close
* Accepts: MAIL stream
*/
void mh_close (stream)
MAILSTREAM *stream;
{
if (LOCAL) { /* only if a file is open */
if (LOCAL->dir) fs_give ((void **) &LOCAL->dir);
mh_gc (stream,GC_TEXTS); /* free local cache */
/* free local scratch buffer */
if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
/* nuke the local data */
fs_give ((void **) &stream->local);
stream->dtb = NIL; /* log out the DTB */
}
}
/* MH mail fetch fast information
* Accepts: MAIL stream
* sequence
*/
void mh_fetchfast (stream,sequence)
MAILSTREAM *stream;
char *sequence;
{
long i;
/* ugly and slow */
if (stream && LOCAL && mail_sequence (stream,sequence))
for (i = 1; i <= stream->nmsgs; i++)
if (mail_elt (stream,i)->sequence)
mh_fetchheader (stream,i);
}
/* MH mail fetch flags
* Accepts: MAIL stream
* sequence
*/
void mh_fetchflags (stream,sequence)
MAILSTREAM *stream;
char *sequence;
{
return; /* no-op for local mail */
}
/* MH mail fetch message 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
*/
ENVELOPE *mh_fetchstructure (stream,msgno,body)
MAILSTREAM *stream;
long msgno;
BODY **body;
{
char *h,*t;
LONGCACHE *lelt;
ENVELOPE **env;
STRING bs;
BODY **b;
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? */
mail_free_envelope (env); /* flush old envelope and body */
mail_free_body (b);
h = mh_fetchheader (stream,msgno);
/* can't use fetchtext since it'll set seen */
t = stream->text ? stream->text : "";
INIT (&bs,mail_string,(void *) t,strlen (t));
/* parse envelope and body */
rfc822_parse_msg (env,body ? b : NIL,h,strlen (h),&bs,mylocalhost (),
LOCAL->buf);
}
if (body) *body = *b; /* return the body */
return *env; /* return the envelope */
}
/* MH mail fetch message header
* Accepts: MAIL stream
* message # to fetch
* Returns: message header in RFC822 format
*/
char *mh_fetchheader (stream,msgno)
MAILSTREAM *stream;
long msgno;
{
unsigned long i,hdrsize;
int fd;
char *s,*b,*t;
long m = msgno - 1;
struct stat sbuf;
struct tm *tm;
MESSAGECACHE *elt = mail_elt (stream,msgno);
/* build message file name */
sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->data1);
if (stream->msgno != msgno) {
mh_gc (stream,GC_TEXTS); /* invalidate current cache */
if ((fd = open (LOCAL->buf,O_RDONLY,NIL)) >= 0) {
fstat (fd,&sbuf); /* get size of message */
/* make plausible IMAPish date string */
tm = gmtime (&sbuf.st_mtime);
elt->day = tm->tm_mday; elt->month = tm->tm_mon + 1;
elt->year = tm->tm_year + 1900 - BASEYEAR;
elt->hours = tm->tm_hour; elt->minutes = tm->tm_min;
elt->seconds = tm->tm_sec;
elt->zhours = 0; elt->zminutes = 0;
/* slurp message */
read (fd,s = (char *) fs_get (sbuf.st_size +1),sbuf.st_size);
s[sbuf.st_size] = '\0'; /* tie off file */
close (fd); /* flush message file */
stream->msgno = msgno; /* note current message number */
/* find end of header */
for (i = 0,b = s; *b && !(i && (*b == '\n')); i = (*b++ == '\n'));
hdrsize = (*b ? ++b:b)-s; /* number of header bytes */
elt->rfc822_size = /* size of entire message in CRLF form */
strcrlfcpy (&LOCAL->hdr,&i,s,hdrsize) +
strcrlfcpy (&stream->text,&i,b,sbuf.st_size - hdrsize);
fs_give ((void **) &s); /* flush old data */
}
}
return LOCAL->hdr ? LOCAL->hdr : "";
}
/* MH mail fetch message text (only)
body only;
* Accepts: MAIL stream
* message # to fetch
* Returns: message text in RFC822 format
*/
char *mh_fetchtext (stream,msgno)
MAILSTREAM *stream;
long msgno;
{
MESSAGECACHE *elt = mail_elt (stream,msgno);
/* snarf message if don't have it yet */
if (stream->msgno != msgno) mh_fetchheader (stream,msgno);
if (!elt->seen) elt->seen = T;/* mark as seen */
return stream->text ? stream->text : "";
}
/* MH 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 *mh_fetchbody (stream,m,s,len)
MAILSTREAM *stream;
long m;
char *s;
unsigned long *len;
{
BODY *b;
PART *pt;
unsigned long i;
char *base;
unsigned long offset = 0;
MESSAGECACHE *elt = mail_elt (stream,m);
/* make sure have a body */
if (!(mh_fetchstructure (stream,m,&b) && b && s && *s &&
((i = strtol (s,&s,10)) > 0) && (base = mh_fetchtext (stream,m))))
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 */
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;
if (!elt->seen) elt->seen = T;/* mark as seen */
return rfc822_contents (&LOCAL->buf,&LOCAL->buflen,len,base + offset,
b->size.ibytes,b->encoding);
}
/* MH mail set flag
* Accepts: MAIL stream
* sequence
* flag(s)
*/
void mh_setflag (stream,sequence,flag)
MAILSTREAM *stream;
char *sequence;
char *flag;
{
MESSAGECACHE *elt;
long i;
short f = mh_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;
}
}
/* MH mail clear flag
* Accepts: MAIL stream
* sequence
* flag(s)
*/
void mh_clearflag (stream,sequence,flag)
MAILSTREAM *stream;
char *sequence;
char *flag;
{
MESSAGECACHE *elt;
long i = stream->nmsgs;
short f = mh_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;
/* clearing either seen or deleted does this */
}
}
/* MH mail search for messages
* Accepts: MAIL stream
* search criteria
*/
void mh_search (stream,criteria)
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 = mh_search_all;
else if (!strcmp (criteria+1,"NSWERED")) f = mh_search_answered;
break;
case 'B': /* possible BCC, BEFORE, BODY */
if (!strcmp (criteria+1,"CC"))
f = mh_search_string (mh_search_bcc,&d,&n);
else if (!strcmp (criteria+1,"EFORE"))
f = mh_search_date (mh_search_before,&n);
else if (!strcmp (criteria+1,"ODY"))
f = mh_search_string (mh_search_body,&d,&n);
break;
case 'C': /* possible CC */
if (!strcmp (criteria+1,"C"))
f = mh_search_string (mh_search_cc,&d,&n);
break;
case 'D': /* possible DELETED */
if (!strcmp (criteria+1,"ELETED")) f = mh_search_deleted;
break;
case 'F': /* possible FLAGGED, FROM */
if (!strcmp (criteria+1,"LAGGED")) f = mh_search_flagged;
else if (!strcmp (criteria+1,"ROM"))
f = mh_search_string (mh_search_from,&d,&n);
break;
case 'K': /* possible KEYWORD */
if (!strcmp (criteria+1,"EYWORD"))
f = mh_search_flag (mh_search_keyword,&d);
break;
case 'N': /* possible NEW */
if (!strcmp (criteria+1,"EW")) f = mh_search_new;
break;
case 'O': /* possible OLD, ON */
if (!strcmp (criteria+1,"LD")) f = mh_search_old;
else if (!strcmp (criteria+1,"N"))
f = mh_search_date (mh_search_on,&n);
break;
case 'R': /* possible RECENT */
if (!strcmp (criteria+1,"ECENT")) f = mh_search_recent;
break;
case 'S': /* possible SEEN, SINCE, SUBJECT */
if (!strcmp (criteria+1,"EEN")) f = mh_search_seen;
else if (!strcmp (criteria+1,"INCE"))
f = mh_search_date (mh_search_since,&n);
else if (!strcmp (criteria+1,"UBJECT"))
f = mh_search_string (mh_search_subject,&d,&n);
break;
case 'T': /* possible TEXT, TO */
if (!strcmp (criteria+1,"EXT"))
f = mh_search_string (mh_search_text,&d,&n);
else if (!strcmp (criteria+1,"O"))
f = mh_search_string (mh_search_to,&d,&n);
break;
case 'U': /* possible UN* */
if (criteria[1] == 'N') {
if (!strcmp (criteria+2,"ANSWERED")) f = mh_search_unanswered;
else if (!strcmp (criteria+2,"DELETED")) f = mh_search_undeleted;
else if (!strcmp (criteria+2,"FLAGGED")) f = mh_search_unflagged;
else if (!strcmp (criteria+2,"KEYWORD"))
f = mh_search_flag (mh_search_unkeyword,&d);
else if (!strcmp (criteria+2,"SEEN")) f = mh_search_unseen;
}
break;
default: /* we will barf below */
break;
}
if (!f) { /* if can't determine any criteria */
sprintf (LOCAL->buf,"Unknown search criterion: %s",criteria);
mm_log (LOCAL->buf,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);
}
}
/* MH mail ping mailbox
* Accepts: MAIL stream
* Returns: T if stream alive, else NIL
*/
long mh_ping (stream)
MAILSTREAM *stream;
{
MAILSTREAM *sysibx = NIL;
MESSAGECACHE *elt,*selt;
struct stat sbuf;
char *s,tmp[MAILTMPLEN];
int fd;
long i,j,r,old;
long nmsgs = stream->nmsgs;
long recent = stream->recent;
stat (LOCAL->dir,&sbuf);
if (sbuf.st_ctime != LOCAL->scantime) {
struct direct **names = NIL;
long nfiles = scandir (LOCAL->dir,&names,mh_select,mh_numsort);
old = nmsgs ? mail_elt (stream,nmsgs)->data1 : 0;
/* note scanned now */
LOCAL->scantime = sbuf.st_ctime;
/* scan directory */
for (i = 0; i < nfiles; ++i) {
/* if newly seen, add to list */
if ((j = atoi (names[i]->d_name)) > old) {
(elt = mail_elt (stream,++nmsgs))->data1 = j;
elt->valid = T; /* note valid flags */
if (old) { /* other than the first pass? */
elt->recent = T; /* yup, mark as recent */
recent++; /* bump recent count */
}
else { /* see if already read */
sprintf (tmp,"%s/%s",LOCAL->dir,names[i]->d_name);
stat (tmp,&sbuf); /* get inode poop */
if (sbuf.st_atime > sbuf.st_mtime) elt->seen = T;
}
}
fs_give ((void **) &names[i]);
}
/* free directory */
if (names) fs_give ((void **) &names);
}
if (LOCAL->inbox) { /* if INBOX, snarf from system INBOX */
old = nmsgs ? mail_elt (stream,nmsgs)->data1 : 0;
/* paranoia check */
if (!strcmp (sysinbox (),stream->mailbox)) return NIL;
mm_critical (stream); /* go critical */
stat (sysinbox (),&sbuf); /* see if anything there */
/* can get sysinbox mailbox? */
if (sbuf.st_size && (sysibx = mail_open (sysibx,sysinbox (),OP_SILENT))
&& (!sysibx->rdonly) && (r = sysibx->nmsgs)) {
for (i = 1; i <= r; ++i) {/* for each message in sysinbox mailbox */
/* build file name we will use */
sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,++old);
/* snarf message from Berkeley mailbox */
s = bezerk_snarf (sysibx,i,&j);
selt = mail_elt (sysibx,i);
if (((fd = open (LOCAL->buf,O_WRONLY|O_CREAT|O_EXCL,
S_IREAD|S_IWRITE)) >= 0) &&
(write (fd,s,j) == j) && (!fsync (fd)) && (!close (fd))) {
/* create new elt, note its file number */
(elt = mail_elt (stream,++nmsgs))->data1 = old;
recent++; /* bump recent count */
/* set up initial flags and date */
elt->valid = elt->recent = T;
elt->seen = selt->seen;
elt->deleted = selt->deleted;
elt->flagged = selt->flagged;
elt->answered = selt->answered;
elt->day = selt->day;elt->month = selt->month;elt->year = selt->year;
elt->hours = selt->hours;elt->minutes = selt->minutes;
elt->seconds = selt->seconds;
elt->zhours = selt->zhours; elt->zminutes = selt->zminutes;
/* should set the file date too */
}
else { /* failed to snarf */
if (fd) { /* did it ever get opened? */
close (fd); /* close descriptor */
unlink (LOCAL->buf);/* flush this file */
}
return NIL; /* note that something is badly wrong */
}
selt->deleted = T; /* delete it from the sysinbox */
}
stat (LOCAL->dir,&sbuf); /* update scan time */
LOCAL->scantime = sbuf.st_ctime;
mail_expunge (sysibx); /* now expunge all those messages */
}
if (sysibx) mail_close (sysibx);
mm_nocritical (stream); /* release critical */
}
mail_exists (stream,nmsgs); /* notify upper level of mailbox size */
mail_recent (stream,recent);
return T; /* return that we are alive */
}
/* MH mail check mailbox
* Accepts: MAIL stream
*/
void mh_check (stream)
MAILSTREAM *stream;
{
/* Perhaps in the future this will preserve flags */
if (mh_ping (stream)) mm_log ("Check completed",(long) NIL);
}
/* MH mail expunge mailbox
* Accepts: MAIL stream
*/
void mh_expunge (stream)
MAILSTREAM *stream;
{
MESSAGECACHE *elt;
unsigned long j;
unsigned long i = 1;
unsigned long n = 0;
unsigned long recent = stream->recent;
mh_gc (stream,GC_TEXTS); /* invalidate texts */
mm_critical (stream); /* go critical */
while (i <= stream->nmsgs) { /* for each message */
/* if deleted, need to trash it */
if ((elt = mail_elt (stream,i))->deleted) {
sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->data1);
if (unlink (LOCAL->buf)) {/* try to delete the message */
sprintf (LOCAL->buf,"Expunge of message %ld failed, aborted: %s",i,
strerror (errno));
mm_log (LOCAL->buf,(long) NIL);
break;
}
if (elt->recent) --recent;/* if recent, note one less recent message */
mail_expunged (stream,i); /* notify upper levels */
n++; /* count up one more expunged message */
}
else i++; /* otherwise try next message */
}
if (n) { /* output the news if any expunged */
sprintf (LOCAL->buf,"Expunged %ld messages",n);
mm_log (LOCAL->buf,(long) NIL);
}
else mm_log ("No messages deleted, so no update needed",(long) NIL);
mm_nocritical (stream); /* release critical */
/* notify upper level of new mailbox size */
mail_exists (stream,stream->nmsgs);
mail_recent (stream,recent);
}
/* MH mail copy message(s)
s;
* Accepts: MAIL stream
* sequence
* destination mailbox
* Returns: T if copy successful, else NIL
*/
long mh_copy (stream,sequence,mailbox)
MAILSTREAM *stream;
char *sequence;
char *mailbox;
{
STRING st;
MESSAGECACHE *elt;
struct stat sbuf;
int fd;
long i;
char *s,tmp[MAILTMPLEN];
/* copy the messages */
if (mail_sequence (stream,sequence)) for (i = 1; i <= stream->nmsgs; i++)
if ((elt = mail_elt (stream,i))->sequence) {
sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->data1);
if ((fd = open (LOCAL->buf,O_RDONLY,NIL)) < 0) return NIL;
fstat (fd,&sbuf); /* get size of message */
/* slurp message */
read (fd,s = (char *) fs_get (sbuf.st_size +1),sbuf.st_size);
s[sbuf.st_size] = '\0'; /* tie off file */
close (fd); /* flush message file */
INIT (&st,mail_string,(void *) s,sbuf.st_size);
sprintf (LOCAL->buf,"%s%s%s%s%s)",
elt->seen ? " \\Seen" : "",
elt->deleted ? " \\Deleted" : "",
elt->flagged ? " \\Flagged" : "",
elt->answered ? " \\Answered" : "",
(elt->seen || elt->deleted || elt->flagged || elt->answered) ?
"" : " ");
LOCAL->buf[0] = '('; /* open list */
mail_date (tmp,elt); /* generate internal date */
if (!mh_append (stream,mailbox,LOCAL->buf,tmp,&st)) {
fs_give ((void **) &s); /* give back temporary space */
return NIL;
}
fs_give ((void **) &s); /* give back temporary space */
}
return T; /* return success */
}
/* MH mail move message(s)
s;
* Accepts: MAIL stream
* sequence
* destination mailbox
* Returns: T if move successful, else NIL
*/
long mh_move (stream,sequence,mailbox)
MAILSTREAM *stream;
char *sequence;
char *mailbox;
{
MESSAGECACHE *elt;
if (mh_copy (stream,sequence,mailbox)) return NIL;
/* delete all requested messages */
mh_setflag (stream,sequence,"\\Deleted");
return T;
}
/* MH mail append message from stringstruct
* Accepts: MAIL stream
* destination mailbox
* stringstruct of messages to append
* Returns: T if append successful, else NIL
*/
long mh_append (stream,mailbox,flags,date,message)
MAILSTREAM *stream;
char *mailbox;
char *flags;
char *date;
STRING *message;
{
struct stat sbuf;
struct direct **names;
int fd;
char c,*s,*t,tmp[MAILTMPLEN];
MESSAGECACHE elt;
long i,last,nfiles;
long size = 0;
long ret = LONGT;
short f = 0;
if (flags) { /* get flags if given */
MAILSTREAM *st = mail_open (NIL,mailbox,OP_SILENT);
long ruf;
f = mh_getflags (st,flags);
mail_close (st);
}
if (date) { /* want to preserve date? */
/* yes, parse date into an elt */
if (!mail_parse_date (&elt,date)) {
sprintf (tmp,"Bad date in append: %s",date);
mm_log (tmp,ERROR);
return NIL;
}
}
/* N.B.: can't use LOCAL->buf for tmp */
/* make sure valid mailbox */
if (!mh_isvalid (mailbox,tmp,NIL)) switch (errno) {
case ENOENT: /* no such file? */
mm_notify (stream,"[TRYCREATE] Must create mailbox before append",NIL);
return NIL;
case 0: /* merely empty file? */
break;
case EINVAL:
sprintf (tmp,"Invalid MH-format mailbox name: %s",mailbox);
mm_log (tmp,ERROR);
return NIL;
default:
sprintf (tmp,"Not a MH-format mailbox: %s",mailbox);
mm_log (tmp,ERROR);
return NIL;
}
mh_file (tmp,mailbox); /* build file name we will use */
if (nfiles = scandir (tmp,&names,mh_select,mh_numsort)) {
/* largest number */
last = atoi (names[nfiles-1]->d_name);
for (i = 0; i < nfiles; ++i) /* free directory */
fs_give ((void **) &names[i]);
}
else last = 0; /* no messages here yet */
if (names) fs_give ((void **) &names);
sprintf (tmp + strlen (tmp),"/%lu",++last);
if ((fd = open (tmp,O_WRONLY|O_CREAT|O_EXCL,S_IREAD|S_IWRITE)) < 0) {
sprintf (tmp,"Can't open append mailbox: %s",strerror (errno));
mm_log (tmp,ERROR);
return NIL;
}
i = SIZE (message); /* get size of message */
s = (char *) fs_get (i + 1); /* get space for the data */
/* copy the data w/o CR's */
while (i--) if ((c = SNX (message)) != '\015') s[size++] = c;
mm_critical (stream); /* go critical */
/* write the data */
if ((write (fd,s,size) < 0) || fsync (fd)) {
unlink (tmp); /* delete mailbox */
sprintf (tmp,"Message append failed: %s",strerror (errno));
mm_log (tmp,ERROR);
ret = NIL;
}
close (fd); /* close the file */
mm_nocritical (stream); /* release critical */
fs_give ((void **) &s); /* flush the buffer */
return ret;
}
/* MH garbage collect stream
* Accepts: Mail stream
* garbage collection flags
*/
void mh_gc (stream,gcflags)
MAILSTREAM *stream;
long gcflags;
{
unsigned long i;
if (gcflags & GC_TEXTS) { /* garbage collect texts? */
/* flush texts from cache */
if (LOCAL->hdr) fs_give ((void **) &LOCAL->hdr);
if (stream->text) fs_give ((void **) &stream->text);
stream->msgno = 0; /* invalidate stream text */
}
}
/* Internal routines */
/* MH file name selection test
* Accepts: candidate directory entry
* Returns: T to use file name, NIL to skip it
*/
int mh_select (name)
struct direct *name;
{
char c;
char *s = name->d_name;
while (c = *s++) if (!isdigit (c)) return NIL;
return T;
}
/* MH file name comparision
* Accepts: first candidate directory entry
* second candidate directory entry
* Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
*/
int mh_numsort (d1,d2)
struct direct **d1;
struct direct **d2;
{
return (atoi ((*d1)->d_name) - atoi ((*d2)->d_name));
}
/* MH mail build file name
* Accepts: destination string
* source
* Returns: destination
*/
char *mh_file (dst,name)
char *dst;
char *name;
{
char tmp[MAILTMPLEN];
/* build composite name */
sprintf (dst,"%s/%s",mh_path,strcmp (ucase (strcpy (tmp,name)),"#MHINBOX") ?
name + 4 : "inbox");
return dst;
}
/* Parse flag list
* Accepts: MAIL stream
* flag list as a character string
* Returns: flag command list
*/
short mh_getflags (stream,flag)
MAILSTREAM *stream;
char *flag;
{
char *t,tmp[MAILTMPLEN],err[MAILTMPLEN];
short f = 0;
short i,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';
t = ucase (tmp); /* uppercase only from now on */
while (t && *t) { /* parse the flags */
if (*t == '\\') { /* system flag? */
switch (*++t) { /* dispatch based on first character */
case 'S': /* possible \Seen flag */
if (t[1] == 'E' && t[2] == 'E' && t[3] == 'N') i = fSEEN;
t += 4; /* skip past flag name */
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') i = fDELETED;
t += 7; /* skip past flag name */
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') i = fFLAGGED;
t += 7; /* skip past flag name */
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') i = fANSWERED;
t += 8; /* skip past flag name */
break;
default: /* unknown */
i = 0;
break;
}
/* add flag to flags list */
if (i && ((*t == '\0') || (*t++ == ' '))) f |= i;
}
else { /* no user flags yet */
t = strtok (t," "); /* isolate flag name */
sprintf (err,"Unknown flag: %.80s",t);
t = strtok (NIL," "); /* get next flag */
mm_log (err,ERROR);
}
}
}
return f;
}
/* Search support routines
* Accepts: MAIL stream
* message number
* pointer to additional data
* pointer to temporary buffer
* Returns: T if search matches, else NIL
*/
char mh_search_all (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return T; /* ALL always succeeds */
}
char mh_search_answered (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->answered ? T : NIL;
}
char mh_search_deleted (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->deleted ? T : NIL;
}
char mh_search_flagged (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->flagged ? T : NIL;
}
char mh_search_keyword (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return NIL; /* keywords not supported yet */
}
char mh_search_new (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
MESSAGECACHE *elt = mail_elt (stream,msgno);
return (elt->recent && !elt->seen) ? T : NIL;
}
char mh_search_old (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->recent ? NIL : T;
}
char mh_search_recent (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->recent ? T : NIL;
}
char mh_search_seen (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->seen ? T : NIL;
}
char mh_search_unanswered (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->answered ? NIL : T;
}
char mh_search_undeleted (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->deleted ? NIL : T;
}
char mh_search_unflagged (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->flagged ? NIL : T;
}
char mh_search_unkeyword (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return T; /* keywords not supported yet */
}
char mh_search_unseen (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return mail_elt (stream,msgno)->seen ? NIL : T;
}
char mh_search_before (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return (char) (mh_msgdate (stream,msgno) < n);
}
char mh_search_on (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
return (char) (mh_msgdate (stream,msgno) == n);
}
char mh_search_since (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
/* everybody interprets "since" as .GE. */
return (char) (mh_msgdate (stream,msgno) >= n);
}
unsigned long mh_msgdate (stream,msgno)
MAILSTREAM *stream;
long msgno;
{
struct stat sbuf;
struct tm *tm;
MESSAGECACHE *elt = mail_elt (stream,msgno);
if (!elt->day) { /* get date if don't have it yet */
/* build message file name */
sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->data1);
stat (LOCAL->buf,&sbuf); /* get message date */
tm = gmtime (&sbuf.st_mtime);
elt->day = tm->tm_mday; elt->month = tm->tm_mon + 1;
elt->year = tm->tm_year + 1900 - BASEYEAR;
elt->hours = tm->tm_hour; elt->minutes = tm->tm_min;
elt->seconds = tm->tm_sec;
elt->zhours = 0; elt->zminutes = 0;
}
return (long) (elt->year << 9) + (elt->month << 5) + elt->day;
}
char mh_search_body (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
mh_fetchheader (stream,msgno);
return stream->text ? search (stream->text,strlen (stream->text),d,n) : NIL;
}
char mh_search_subject (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
char *t = mh_fetchstructure (stream,msgno,NIL)->subject;
return t ? search (t,strlen (t),d,n) : NIL;
}
char mh_search_text (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
char *t = mh_fetchheader (stream,msgno);
return (t && search (t,strlen (t),d,n)) ||
mh_search_body (stream,msgno,d,n);
}
char mh_search_bcc (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
ADDRESS *a = mh_fetchstructure (stream,msgno,NIL)->bcc;
LOCAL->buf[0] = '\0'; /* initially empty string */
/* get text for address */
rfc822_write_address (LOCAL->buf,a);
return search (LOCAL->buf,(long) strlen (LOCAL->buf),d,n);
}
char mh_search_cc (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
ADDRESS *a = mh_fetchstructure (stream,msgno,NIL)->cc;
LOCAL->buf[0] = '\0'; /* initially empty string */
/* get text for address */
rfc822_write_address (LOCAL->buf,a);
return search (LOCAL->buf,(long) strlen (LOCAL->buf),d,n);
}
char mh_search_from (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
ADDRESS *a = mh_fetchstructure (stream,msgno,NIL)->from;
LOCAL->buf[0] = '\0'; /* initially empty string */
/* get text for address */
rfc822_write_address (LOCAL->buf,a);
return search (LOCAL->buf,(long) strlen (LOCAL->buf),d,n);
}
char mh_search_to (stream,msgno,d,n)
MAILSTREAM *stream;
long msgno;
char *d;
long n;
{
ADDRESS *a = mh_fetchstructure (stream,msgno,NIL)->to;
LOCAL->buf[0] = '\0'; /* initially empty string */
/* get text for address */
rfc822_write_address (LOCAL->buf,a);
return search (LOCAL->buf,(long) strlen (LOCAL->buf),d,n);
}
/* Search parsers */
/* Parse a date
* Accepts: function to return
* pointer to date integer to return
* Returns: function to return
*/
search_t mh_search_date (f,n)
search_t f;
long *n;
{
long i;
char *s;
MESSAGECACHE elt;
/* parse the date and return fn if OK */
return (mh_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 string to return
* Returns: function to return
*/
search_t mh_search_flag (f,d)
search_t f;
char **d;
{
/* get a keyword, return if OK */
return (*d = strtok (NIL," ")) ? f : NIL;
}
/* Parse a string
* Accepts: function to return
* pointer to string to return
* pointer to string length to return
* Returns: function to return
*/
search_t mh_search_string (f,d,n)
search_t f;
char **d;
long *n;
{
char *end = " ";
char *c = strtok (NIL,""); /* remainder of criteria */
if (!c) return NIL; /* missing argument */
switch (*c) { /* see what the argument is */
case '{': /* literal string */
*n = strtol (c+1,d,10); /* get its length */
if ((*(*d)++ == '}') && (*(*d)++ == '\015') && (*(*d)++ == '\012') &&
(!(*(c = *d + *n)) || (*c == ' '))) {
char e = *--c;
*c = DELIM; /* make sure not a space */
strtok (c," "); /* reset the strtok mechanism */
*c = e; /* put character back */
break;
}
case '\0': /* catch bogons */
case ' ':
return NIL;
case '"': /* quoted string */
if (strchr (c+1,'"')) end = "\"";
else return NIL;
default: /* atomic string */
if (*d = strtok (c,end)) *n = strlen (*d);
else return NIL;
break;
}
return f;
}