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/*
* Copyright (C) 1996-2000 Michael R. Elkins <me@mutt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include "mutt.h"
#include "buffy.h"
#include "mailbox.h"
#include "mx.h"
#include "mutt_curses.h"
#ifdef USE_IMAP
#include "imap.h"
#endif
#include <string.h>
#include <sys/stat.h>
#include <dirent.h>
#include <utime.h>
#include <ctype.h>
#include <unistd.h>
#include <stdio.h>
static time_t BuffyTime = 0; /* last time we started checking for mail */
time_t BuffyDoneTime = 0; /* last time we knew for sure how much mail there was. */
static short BuffyCount = 0; /* how many boxes with new mail */
static short BuffyNotify = 0; /* # of unnotified new boxes */
static BUFFY* buffy_get (const char *path);
/* Find the last message in the file.
* upon success return 0. If no message found - return -1 */
static int fseek_last_message (FILE * f)
{
LOFF_T pos;
char buffer[BUFSIZ + 9]; /* 7 for "\n\nFrom " */
int bytes_read;
int i; /* Index into `buffer' for scanning. */
memset (buffer, 0, sizeof(buffer));
fseek (f, 0, SEEK_END);
pos = ftello (f);
/* Set `bytes_read' to the size of the last, probably partial, buffer; 0 <
* `bytes_read' <= `BUFSIZ'. */
bytes_read = pos % BUFSIZ;
if (bytes_read == 0)
bytes_read = BUFSIZ;
/* Make `pos' a multiple of `BUFSIZ' (0 if the file is short), so that all
* reads will be on block boundaries, which might increase efficiency. */
while ((pos -= bytes_read) >= 0)
{
/* we save in the buffer at the end the first 7 chars from the last read */
strncpy (buffer + BUFSIZ, buffer, 5+2); /* 2 == 2 * mutt_strlen(CRLF) */
fseeko (f, pos, SEEK_SET);
bytes_read = fread (buffer, sizeof (char), bytes_read, f);
if (bytes_read == -1)
return -1;
for (i = bytes_read; --i >= 0;)
if (!mutt_strncmp (buffer + i, "\n\nFrom ", mutt_strlen ("\n\nFrom ")))
{ /* found it - go to the beginning of the From */
fseeko (f, pos + i + 2, SEEK_SET);
return 0;
}
bytes_read = BUFSIZ;
}
/* here we are at the beginning of the file */
if (!mutt_strncmp ("From ", buffer, 5))
{
fseek (f, 0, 0);
return (0);
}
return (-1);
}
/* Return 1 if the last message is new */
static int test_last_status_new (FILE * f)
{
HEADER *hdr;
ENVELOPE* tmp_envelope;
int result = 0;
if (fseek_last_message (f) == -1)
return (0);
hdr = mutt_new_header ();
tmp_envelope = mutt_read_rfc822_header (f, hdr, 0, 0);
if (!(hdr->read || hdr->old))
result = 1;
mutt_free_envelope(&tmp_envelope);
mutt_free_header (&hdr);
return result;
}
static int test_new_folder (const char *path)
{
FILE *f;
int rc = 0;
int typ;
typ = mx_get_magic (path);
if (typ != M_MBOX && typ != M_MMDF)
return 0;
if ((f = fopen (path, "rb")))
{
rc = test_last_status_new (f);
safe_fclose (&f);
}
return rc;
}
void mutt_buffy_cleanup (const char *buf, struct stat *st)
{
struct utimbuf ut;
BUFFY *tmp;
if (option(OPTCHECKMBOXSIZE))
{
tmp = mutt_find_mailbox (buf);
if (tmp && !tmp->new)
mutt_update_mailbox (tmp);
}
else
{
/* fix up the times so buffy won't get confused */
if (st->st_mtime > st->st_atime)
{
ut.actime = st->st_atime;
ut.modtime = time (NULL);
utime (buf, &ut);
}
else
utime (buf, NULL);
}
}
BUFFY *mutt_find_mailbox (const char *path)
{
BUFFY *tmp = NULL;
struct stat sb;
struct stat tmp_sb;
if (stat (path,&sb) != 0)
return NULL;
for (tmp = Incoming; tmp; tmp = tmp->next)
{
if (stat (tmp->path,&tmp_sb) ==0 &&
sb.st_dev == tmp_sb.st_dev && sb.st_ino == tmp_sb.st_ino)
break;
}
return tmp;
}
void mutt_update_mailbox (BUFFY * b)
{
struct stat sb;
if (!b)
return;
if (stat (b->path, &sb) == 0)
b->size = (off_t) sb.st_size;
else
b->size = 0;
return;
}
static BUFFY *buffy_new (const char *path)
{
BUFFY* buffy;
buffy = (BUFFY *) safe_calloc (1, sizeof (BUFFY));
strfcpy (buffy->path, path, sizeof (buffy->path));
buffy->next = NULL;
buffy->magic = 0;
return buffy;
}
static void buffy_free (BUFFY **mailbox)
{
FREE (mailbox); /* __FREE_CHECKED__ */
}
int mutt_parse_mailboxes (BUFFER *path, BUFFER *s, unsigned long data, BUFFER *err)
{
BUFFY **tmp,*tmp1;
char buf[_POSIX_PATH_MAX];
struct stat sb;
char f1[PATH_MAX], f2[PATH_MAX];
char *p, *q;
while (MoreArgs (s))
{
mutt_extract_token (path, s, 0);
strfcpy (buf, path->data, sizeof (buf));
if(data == M_UNMAILBOXES && mutt_strcmp(buf,"*") == 0)
{
for (tmp = &Incoming; *tmp;)
{
tmp1=(*tmp)->next;
buffy_free (tmp);
*tmp=tmp1;
}
return 0;
}
mutt_expand_path (buf, sizeof (buf));
/* Skip empty tokens. */
if(!*buf) continue;
/* avoid duplicates */
p = realpath (buf, f1);
for (tmp = &Incoming; *tmp; tmp = &((*tmp)->next))
{
q = realpath ((*tmp)->path, f2);
if (mutt_strcmp (p ? p : buf, q ? q : (*tmp)->path) == 0)
{
dprint(3,(debugfile,"mailbox '%s' already registered as '%s'\n", buf, (*tmp)->path));
break;
}
}
if(data == M_UNMAILBOXES)
{
if(*tmp)
{
tmp1=(*tmp)->next;
buffy_free (tmp);
*tmp=tmp1;
}
continue;
}
if (!*tmp)
*tmp = buffy_new (buf);
(*tmp)->new = 0;
(*tmp)->notified = 1;
(*tmp)->newly_created = 0;
/* for check_mbox_size, it is important that if the folder is new (tested by
* reading it), the size is set to 0 so that later when we check we see
* that it increased . without check_mbox_size we probably don't care.
*/
if (option(OPTCHECKMBOXSIZE) &&
stat ((*tmp)->path, &sb) == 0 && !test_new_folder ((*tmp)->path))
{
/* some systems out there don't have an off_t type */
(*tmp)->size = (off_t) sb.st_size;
}
else
(*tmp)->size = 0;
}
return 0;
}
/* returns 1 if maildir has new mail */
static int buffy_maildir_hasnew (BUFFY* mailbox)
{
char path[_POSIX_PATH_MAX];
DIR *dirp;
struct dirent *de;
char *p;
int rc = 0;
struct stat sb;
snprintf (path, sizeof (path), "%s/new", mailbox->path);
/* when $mail_check_recent is set, if the new/ directory hasn't been modified since
* the user last exited the mailbox, then we know there is no recent mail.
*/
if (option(OPTMAILCHECKRECENT))
{
if (stat(path, &sb) == 0 && sb.st_mtime < mailbox->last_visited)
return 0;
}
if ((dirp = opendir (path)) == NULL)
{
mailbox->magic = 0;
return 0;
}
while ((de = readdir (dirp)) != NULL)
{
if (*de->d_name == '.')
continue;
if (!(p = strstr (de->d_name, ":2,")) || !strchr (p + 3, 'T'))
{
if (option(OPTMAILCHECKRECENT))
{
char msgpath[_POSIX_PATH_MAX];
snprintf(msgpath, sizeof(msgpath), "%s/%s", path, de->d_name);
/* ensure this message was received since leaving this mailbox */
if (stat(msgpath, &sb) == 0 && (sb.st_ctime <= mailbox->last_visited))
continue;
}
/* one new and undeleted message is enough */
mailbox->new = 1;
rc = 1;
break;
}
}
closedir (dirp);
return rc;
}
/* returns 1 if mailbox has new mail */
static int buffy_mbox_hasnew (BUFFY* mailbox, struct stat *sb)
{
int rc = 0;
int statcheck;
if (option (OPTCHECKMBOXSIZE))
statcheck = sb->st_size > mailbox->size;
else
statcheck = sb->st_mtime > sb->st_atime
|| (mailbox->newly_created && sb->st_ctime == sb->st_mtime && sb->st_ctime == sb->st_atime);
if (statcheck)
{
if (!option(OPTMAILCHECKRECENT) || sb->st_mtime > mailbox->last_visited)
{
rc = 1;
mailbox->new = 1;
}
}
else if (option(OPTCHECKMBOXSIZE))
{
/* some other program has deleted mail from the folder */
mailbox->size = (off_t) sb->st_size;
}
if (mailbox->newly_created &&
(sb->st_ctime != sb->st_mtime || sb->st_ctime != sb->st_atime))
mailbox->newly_created = 0;
return rc;
}
int mutt_buffy_check (int force)
{
BUFFY *tmp;
struct stat sb;
struct stat contex_sb;
time_t t;
sb.st_size=0;
contex_sb.st_dev=0;
contex_sb.st_ino=0;
#ifdef USE_IMAP
/* update postponed count as well, on force */
if (force)
mutt_update_num_postponed ();
#endif
/* fastest return if there are no mailboxes */
if (!Incoming)
return 0;
t = time (NULL);
if (!force && (t - BuffyTime < BuffyTimeout))
return BuffyCount;
BuffyTime = t;
BuffyCount = 0;
BuffyNotify = 0;
#ifdef USE_IMAP
BuffyCount += imap_buffy_check (force);
#endif
/* check device ID and serial number instead of comparing paths */
if (!Context || Context->magic == M_IMAP || Context->magic == M_POP
|| stat (Context->path, &contex_sb) != 0)
{
contex_sb.st_dev=0;
contex_sb.st_ino=0;
}
for (tmp = Incoming; tmp; tmp = tmp->next)
{
if (tmp->magic != M_IMAP)
{
tmp->new = 0;
#ifdef USE_POP
if (mx_is_pop (tmp->path))
tmp->magic = M_POP;
else
#endif
if (stat (tmp->path, &sb) != 0 || (S_ISREG(sb.st_mode) && sb.st_size == 0) ||
(!tmp->magic && (tmp->magic = mx_get_magic (tmp->path)) <= 0))
{
/* if the mailbox still doesn't exist, set the newly created flag to
* be ready for when it does. */
tmp->newly_created = 1;
tmp->magic = 0;
tmp->size = 0;
continue;
}
}
/* check to see if the folder is the currently selected folder
* before polling */
if (!Context || !Context->path ||
(( tmp->magic == M_IMAP || tmp->magic == M_POP )
? mutt_strcmp (tmp->path, Context->path) :
(sb.st_dev != contex_sb.st_dev || sb.st_ino != contex_sb.st_ino)))
{
switch (tmp->magic)
{
case M_MBOX:
case M_MMDF:
if (buffy_mbox_hasnew (tmp, &sb) > 0)
BuffyCount++;
break;
case M_MAILDIR:
if (buffy_maildir_hasnew (tmp) > 0)
BuffyCount++;
break;
case M_MH:
if ((tmp->new = mh_buffy (tmp->path)) > 0)
BuffyCount++;
break;
}
}
else if (option(OPTCHECKMBOXSIZE) && Context && Context->path)
tmp->size = (off_t) sb.st_size; /* update the size of current folder */
if (!tmp->new)
tmp->notified = 0;
else if (!tmp->notified)
BuffyNotify++;
}
BuffyDoneTime = BuffyTime;
return (BuffyCount);
}
int mutt_buffy_list (void)
{
BUFFY *tmp;
char path[_POSIX_PATH_MAX];
char buffylist[2*STRING];
size_t pos = 0;
int first = 1;
int have_unnotified = BuffyNotify;
buffylist[0] = 0;
pos += strlen (strncat (buffylist, _("New mail in "), sizeof (buffylist) - 1 - pos)); /* __STRNCAT_CHECKED__ */
for (tmp = Incoming; tmp; tmp = tmp->next)
{
/* Is there new mail in this mailbox? */
if (!tmp->new || (have_unnotified && tmp->notified))
continue;
strfcpy (path, tmp->path, sizeof (path));
mutt_pretty_mailbox (path, sizeof (path));
if (!first && (COLS - 7 >= 0) && (pos + strlen (path) >= (size_t)COLS - 7))
break;
if (!first)
pos += strlen (strncat(buffylist + pos, ", ", sizeof(buffylist)-1-pos)); /* __STRNCAT_CHECKED__ */
/* Prepend an asterisk to mailboxes not already notified */
if (!tmp->notified)
{
/* pos += strlen (strncat(buffylist + pos, "*", sizeof(buffylist)-1-pos)); __STRNCAT_CHECKED__ */
tmp->notified = 1;
BuffyNotify--;
}
pos += strlen (strncat(buffylist + pos, path, sizeof(buffylist)-1-pos)); /* __STRNCAT_CHECKED__ */
first = 0;
}
if (!first && tmp)
{
strncat (buffylist + pos, ", ...", sizeof (buffylist) - 1 - pos); /* __STRNCAT_CHECKED__ */
}
if (!first)
{
mutt_message ("%s", buffylist);
return (1);
}
/* there were no mailboxes needing to be notified, so clean up since
* BuffyNotify has somehow gotten out of sync
*/
BuffyNotify = 0;
return (0);
}
void mutt_buffy_setnotified (const char *path)
{
BUFFY *buffy;
buffy = buffy_get(path);
if (!buffy)
return;
buffy->notified = 1;
time(&buffy->last_visited);
}
int mutt_buffy_notify (void)
{
if (mutt_buffy_check (0) && BuffyNotify)
{
return (mutt_buffy_list ());
}
return (0);
}
/*
* mutt_buffy() -- incoming folders completion routine
*
* given a folder name, this routine gives the next incoming folder with new
* mail.
*/
void mutt_buffy (char *s, size_t slen)
{
BUFFY *tmp = Incoming;
int pass, found = 0;
mutt_expand_path (s, slen);
if (mutt_buffy_check (0))
{
for (pass = 0; pass < 2; pass++)
for (tmp = Incoming; tmp; tmp = tmp->next)
{
mutt_expand_path (tmp->path, sizeof (tmp->path));
if ((found || pass) && tmp->new)
{
strfcpy (s, tmp->path, slen);
mutt_pretty_mailbox (s, slen);
return;
}
if (mutt_strcmp (s, tmp->path) == 0)
found = 1;
}
mutt_buffy_check (1); /* buffy was wrong - resync things */
}
/* no folders with new mail */
*s = '\0';
}
/* fetch buffy object for given path, if present */
static BUFFY* buffy_get (const char *path)
{
BUFFY *cur;
char *epath;
if (!path)
return NULL;
epath = safe_strdup(path);
mutt_expand_path(epath, mutt_strlen(epath));
for (cur = Incoming; cur; cur = cur->next)
{
/* must be done late because e.g. IMAP delimiter may change */
mutt_expand_path (cur->path, sizeof (cur->path));
if (!mutt_strcmp(cur->path, path))
{
FREE (&epath);
return cur;
}
}
FREE (&epath);
return NULL;
}
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