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/*
* Copyright (C) 1996-2002,2004,2007 Michael R. Elkins <me@mutt.org>, and others
*
* 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 "mailbox.h"
#include "mutt_crypt.h"
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h>
typedef struct hook
{
int type; /* hook type */
REGEXP rx; /* regular expression */
char *command; /* filename, command or pattern to execute */
pattern_t *pattern; /* used for fcc,save,send-hook */
struct hook *next;
} HOOK;
static HOOK *Hooks = NULL;
static int current_hook_type = 0;
int mutt_parse_hook (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
HOOK *ptr;
BUFFER command, pattern;
int rc, not = 0;
regex_t *rx = NULL;
pattern_t *pat = NULL;
char path[_POSIX_PATH_MAX];
memset (&pattern, 0, sizeof (pattern));
memset (&command, 0, sizeof (command));
if (*s->dptr == '!')
{
s->dptr++;
SKIPWS (s->dptr);
not = 1;
}
mutt_extract_token (&pattern, s, 0);
if (!MoreArgs (s))
{
strfcpy (err->data, _("too few arguments"), err->dsize);
goto error;
}
mutt_extract_token (&command, s, (data & (M_FOLDERHOOK | M_SENDHOOK | M_SEND2HOOK | M_ACCOUNTHOOK | M_REPLYHOOK)) ? M_TOKEN_SPACE : 0);
if (!command.data)
{
strfcpy (err->data, _("too few arguments"), err->dsize);
goto error;
}
if (MoreArgs (s))
{
strfcpy (err->data, _("too many arguments"), err->dsize);
goto error;
}
if (data & (M_FOLDERHOOK | M_MBOXHOOK))
{
strfcpy (path, pattern.data, sizeof (path));
_mutt_expand_path (path, sizeof (path), 1);
FREE (&pattern.data);
memset (&pattern, 0, sizeof (pattern));
pattern.data = safe_strdup (path);
}
else if (DefaultHook && !(data & (M_CHARSETHOOK | M_ICONVHOOK | M_ACCOUNTHOOK))
&& (!WithCrypto || !(data & M_CRYPTHOOK))
)
{
char tmp[HUGE_STRING];
/* At this stage remain only message-hooks, reply-hooks, send-hooks,
* send2-hooks, save-hooks, and fcc-hooks: All those allowing full
* patterns. If given a simple regexp, we expand $default_hook.
*/
strfcpy (tmp, pattern.data, sizeof (tmp));
mutt_check_simple (tmp, sizeof (tmp), DefaultHook);
FREE (&pattern.data);
memset (&pattern, 0, sizeof (pattern));
pattern.data = safe_strdup (tmp);
}
if (data & (M_MBOXHOOK | M_SAVEHOOK | M_FCCHOOK))
{
strfcpy (path, command.data, sizeof (path));
mutt_expand_path (path, sizeof (path));
FREE (&command.data);
memset (&command, 0, sizeof (command));
command.data = safe_strdup (path);
}
/* check to make sure that a matching hook doesn't already exist */
for (ptr = Hooks; ptr; ptr = ptr->next)
{
if (ptr->type == data &&
ptr->rx.not == not &&
!mutt_strcmp (pattern.data, ptr->rx.pattern))
{
if (data & (M_FOLDERHOOK | M_SENDHOOK | M_SEND2HOOK | M_MESSAGEHOOK | M_ACCOUNTHOOK | M_REPLYHOOK))
{
/* these hooks allow multiple commands with the same
* pattern, so if we've already seen this pattern/command pair, just
* ignore it instead of creating a duplicate */
if (!mutt_strcmp (ptr->command, command.data))
{
FREE (&command.data);
FREE (&pattern.data);
return 0;
}
}
else
{
/* other hooks only allow one command per pattern, so update the
* entry with the new command. this currently does not change the
* order of execution of the hooks, which i think is desirable since
* a common action to perform is to change the default (.) entry
* based upon some other information. */
FREE (&ptr->command);
ptr->command = command.data;
FREE (&pattern.data);
return 0;
}
}
if (!ptr->next)
break;
}
if (data & (M_SENDHOOK | M_SEND2HOOK | M_SAVEHOOK | M_FCCHOOK | M_MESSAGEHOOK | M_REPLYHOOK))
{
if ((pat = mutt_pattern_comp (pattern.data,
(data & (M_SENDHOOK | M_SEND2HOOK | M_FCCHOOK)) ? 0 : M_FULL_MSG,
err)) == NULL)
goto error;
}
else
{
/* Hooks not allowing full patterns: Check syntax of regexp */
rx = safe_malloc (sizeof (regex_t));
#ifdef M_CRYPTHOOK
if ((rc = REGCOMP (rx, NONULL(pattern.data), ((data & (M_CRYPTHOOK|M_CHARSETHOOK|M_ICONVHOOK)) ? REG_ICASE : 0))) != 0)
#else
if ((rc = REGCOMP (rx, NONULL(pattern.data), (data & (M_CHARSETHOOK|M_ICONVHOOK)) ? REG_ICASE : 0)) != 0)
#endif /* M_CRYPTHOOK */
{
regerror (rc, rx, err->data, err->dsize);
FREE (&rx);
goto error;
}
}
if (ptr)
{
ptr->next = safe_calloc (1, sizeof (HOOK));
ptr = ptr->next;
}
else
Hooks = ptr = safe_calloc (1, sizeof (HOOK));
ptr->type = data;
ptr->command = command.data;
ptr->pattern = pat;
ptr->rx.pattern = pattern.data;
ptr->rx.rx = rx;
ptr->rx.not = not;
return 0;
error:
FREE (&pattern.data);
FREE (&command.data);
return (-1);
}
static void delete_hook (HOOK *h)
{
FREE (&h->command);
FREE (&h->rx.pattern);
if (h->rx.rx)
{
regfree (h->rx.rx);
}
mutt_pattern_free (&h->pattern);
FREE (&h);
}
/* Deletes all hooks of type ``type'', or all defined hooks if ``type'' is 0 */
static void delete_hooks (int type)
{
HOOK *h;
HOOK *prev;
while (h = Hooks, h && (type == 0 || type == h->type))
{
Hooks = h->next;
delete_hook (h);
}
prev = h; /* Unused assignment to avoid compiler warnings */
while (h)
{
if (type == h->type)
{
prev->next = h->next;
delete_hook (h);
}
else
prev = h;
h = prev->next;
}
}
int mutt_parse_unhook (BUFFER *buf, BUFFER *s, unsigned long data, BUFFER *err)
{
while (MoreArgs (s))
{
mutt_extract_token (buf, s, 0);
if (mutt_strcmp ("*", buf->data) == 0)
{
if (current_hook_type)
{
snprintf (err->data, err->dsize,
_("unhook: Can't do unhook * from within a hook."));
return -1;
}
delete_hooks (0);
}
else
{
int type = mutt_get_hook_type (buf->data);
if (!type)
{
snprintf (err->data, err->dsize,
_("unhook: unknown hook type: %s"), buf->data);
return (-1);
}
if (current_hook_type == type)
{
snprintf (err->data, err->dsize,
_("unhook: Can't delete a %s from within a %s."),
buf->data, buf->data);
return -1;
}
delete_hooks (type);
}
}
return 0;
}
void mutt_folder_hook (char *path)
{
HOOK *tmp = Hooks;
BUFFER err, token;
char buf[STRING];
current_hook_type = M_FOLDERHOOK;
err.data = buf;
err.dsize = sizeof (buf);
memset (&token, 0, sizeof (token));
for (; tmp; tmp = tmp->next)
{
if(!tmp->command)
continue;
if (tmp->type & M_FOLDERHOOK)
{
if ((regexec (tmp->rx.rx, path, 0, NULL, 0) == 0) ^ tmp->rx.not)
{
if (mutt_parse_rc_line (tmp->command, &token, &err) == -1)
{
mutt_error ("%s", err.data);
FREE (&token.data);
mutt_sleep (1); /* pause a moment to let the user see the error */
current_hook_type = 0;
return;
}
}
}
}
FREE (&token.data);
current_hook_type = 0;
}
char *mutt_find_hook (int type, const char *pat)
{
HOOK *tmp = Hooks;
for (; tmp; tmp = tmp->next)
if (tmp->type & type)
{
if (regexec (tmp->rx.rx, pat, 0, NULL, 0) == 0)
return (tmp->command);
}
return (NULL);
}
void mutt_message_hook (CONTEXT *ctx, HEADER *hdr, int type)
{
BUFFER err, token;
HOOK *hook;
char buf[STRING];
current_hook_type = type;
err.data = buf;
err.dsize = sizeof (buf);
memset (&token, 0, sizeof (token));
for (hook = Hooks; hook; hook = hook->next)
{
if(!hook->command)
continue;
if (hook->type & type)
if ((mutt_pattern_exec (hook->pattern, 0, ctx, hdr) > 0) ^ hook->rx.not)
if (mutt_parse_rc_line (hook->command, &token, &err) != 0)
{
FREE (&token.data);
mutt_error ("%s", err.data);
mutt_sleep (1);
current_hook_type = 0;
return;
}
}
FREE (&token.data);
current_hook_type = 0;
}
static int
mutt_addr_hook (char *path, size_t pathlen, int type, CONTEXT *ctx, HEADER *hdr)
{
HOOK *hook;
/* determine if a matching hook exists */
for (hook = Hooks; hook; hook = hook->next)
{
if(!hook->command)
continue;
if (hook->type & type)
if ((mutt_pattern_exec (hook->pattern, 0, ctx, hdr) > 0) ^ hook->rx.not)
{
mutt_make_string (path, pathlen, hook->command, ctx, hdr);
return 0;
}
}
return -1;
}
void mutt_default_save (char *path, size_t pathlen, HEADER *hdr)
{
*path = 0;
if (mutt_addr_hook (path, pathlen, M_SAVEHOOK, Context, hdr) != 0)
{
char tmp[_POSIX_PATH_MAX];
ADDRESS *adr;
ENVELOPE *env = hdr->env;
int fromMe = mutt_addr_is_user (env->from);
if (!fromMe && env->reply_to && env->reply_to->mailbox)
adr = env->reply_to;
else if (!fromMe && env->from && env->from->mailbox)
adr = env->from;
else if (env->to && env->to->mailbox)
adr = env->to;
else if (env->cc && env->cc->mailbox)
adr = env->cc;
else
adr = NULL;
if (adr)
{
mutt_safe_path (tmp, sizeof (tmp), adr);
snprintf (path, pathlen, "=%s", tmp);
}
}
}
void mutt_select_fcc (char *path, size_t pathlen, HEADER *hdr)
{
ADDRESS *adr;
char buf[_POSIX_PATH_MAX];
ENVELOPE *env = hdr->env;
if (mutt_addr_hook (path, pathlen, M_FCCHOOK, NULL, hdr) != 0)
{
if ((option (OPTSAVENAME) || option (OPTFORCENAME)) &&
(env->to || env->cc || env->bcc))
{
adr = env->to ? env->to : (env->cc ? env->cc : env->bcc);
mutt_safe_path (buf, sizeof (buf), adr);
mutt_concat_path (path, NONULL(Maildir), buf, pathlen);
if (!option (OPTFORCENAME) && mx_access (path, W_OK) != 0)
strfcpy (path, NONULL (Outbox), pathlen);
}
else
strfcpy (path, NONULL (Outbox), pathlen);
}
mutt_pretty_mailbox (path, pathlen);
}
static char *_mutt_string_hook (const char *match, int hook)
{
HOOK *tmp = Hooks;
for (; tmp; tmp = tmp->next)
{
if ((tmp->type & hook) && ((match &&
regexec (tmp->rx.rx, match, 0, NULL, 0) == 0) ^ tmp->rx.not))
return (tmp->command);
}
return (NULL);
}
char *mutt_charset_hook (const char *chs)
{
return _mutt_string_hook (chs, M_CHARSETHOOK);
}
char *mutt_iconv_hook (const char *chs)
{
return _mutt_string_hook (chs, M_ICONVHOOK);
}
char *mutt_crypt_hook (ADDRESS *adr)
{
return _mutt_string_hook (adr->mailbox, M_CRYPTHOOK);
}
#ifdef USE_SOCKET
void mutt_account_hook (const char* url)
{
/* parsing commands with URLs in an account hook can cause a recursive
* call. We just skip processing if this occurs. Typically such commands
* belong in a folder-hook -- perhaps we should warn the user. */
static int inhook = 0;
HOOK* hook;
BUFFER token;
BUFFER err;
char buf[STRING];
if (inhook)
return;
err.data = buf;
err.dsize = sizeof (buf);
memset (&token, 0, sizeof (token));
for (hook = Hooks; hook; hook = hook->next)
{
if (! (hook->command && (hook->type & M_ACCOUNTHOOK)))
continue;
if ((regexec (hook->rx.rx, url, 0, NULL, 0) == 0) ^ hook->rx.not)
{
inhook = 1;
if (mutt_parse_rc_line (hook->command, &token, &err) == -1)
{
FREE (&token.data);
mutt_error ("%s", err.data);
mutt_sleep (1);
inhook = 0;
return;
}
inhook = 0;
}
}
FREE (&token.data);
}
#endif
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