/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* mail-autofilter.c
*
* Copyright (C) 2000 Ximian, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Michael Zucchi <notzed@ximian.com>
* Ettore Perazzoli <ettore@ximian.com>
*/
/* Code for autogenerating rules or filters from a message. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#include <libgnomeui/gnome-app.h>
#include <libgnomeui/gnome-app-helper.h>
#include <libgnomeui/gnome-popup-menu.h>
#include "mail-vfolder.h"
#include "mail-autofilter.h"
#include "camel/camel.h"
#include "filter/vfolder-context.h"
#include "filter/vfolder-rule.h"
#include "filter/vfolder-editor.h"
#include "filter/filter-context.h"
#include "filter/filter-filter.h"
#include "filter/filter-editor.h"
#include "filter/filter-option.h"
static void
rule_match_recipients (RuleContext *context, FilterRule *rule, CamelInternetAddress *iaddr)
{
FilterPart *part;
FilterElement *element;
int i;
const char *real, *addr;
char *namestr;
/* address types etc should handle multiple values */
for (i = 0; camel_internet_address_get (iaddr, i, &real, &addr); i++) {
part = rule_context_create_part (context, "to");
filter_rule_add_part ((FilterRule *)rule, part);
element = filter_part_find_element (part, "recipient-type");
filter_option_set_current ((FilterOption *)element, "contains");
element = filter_part_find_element (part, "recipient");
filter_input_set_value ((FilterInput *)element, addr);
namestr = g_strdup_printf (_("Mail to %s"), real && real[0] ? real : addr);
filter_rule_set_name (rule, namestr);
g_free (namestr);
}
}
/* remove 're' part of a subject */
static const char *
strip_re (const char *subject)
{
const unsigned char *s, *p;
s = (unsigned char *) subject;
while (*s) {
while (isspace (*s))
s++;
if (s[0] == 0)
break;
if ((s[0] == 'r' || s[0] == 'R')
&& (s[1] == 'e' || s[1] == 'E')) {
p = s+2;
while (isdigit (*p) || (ispunct (*p) && (*p != ':')))
p++;
if (*p == ':') {
s = p + 1;
} else
break;
} else
break;
}
return (char *) s;
}
#if 0
int
reg_match (char *str, char *regstr)
{
regex_t reg;
int error;
int ret;
error = regcomp(®, regstr, REG_EXTENDED|REG_ICASE|REG_NOSUB);
if (error != 0) {
return 0;
}
error = regexec(®, str, 0, NULL, 0);
regfree(®);
return (error == 0);
}
#endif
static void
rule_add_subject (RuleContext *context, FilterRule *rule, const char *text)
{
FilterPart *part;
FilterElement *element;
/* dont match on empty strings ever */
if (*text == 0)
return;
part = rule_context_create_part (context, "subject");
filter_rule_add_part ((FilterRule *)rule, part);
element = filter_part_find_element (part, "subject-type");
filter_option_set_current ((FilterOption *)element, "contains");
element = filter_part_find_element (part, "subject");
filter_input_set_value ((FilterInput *)element, text);
}
static void
rule_add_sender (RuleContext *context, FilterRule *rule, const char *text)
{
FilterPart *part;
FilterElement *element;
/* dont match on empty strings ever */
if (*text == 0)
return;
part = rule_context_create_part (context, "sender");
filter_rule_add_part ((FilterRule *)rule, part);
element = filter_part_find_element (part, "sender-type");
filter_option_set_current ((FilterOption *)element, "contains");
element = filter_part_find_element (part, "sender");
filter_input_set_value ((FilterInput *)element, text);
}
/* do a bunch of things on the subject to try and detect mailing lists, remove
unneeded stuff, etc */
static void
rule_match_subject (RuleContext *context, FilterRule *rule, const char *subject)
{
const char *s;
const char *s1, *s2;
char *tmp;
s = strip_re (subject);
/* dont match on empty subject */
if (*s == 0)
return;
/* [blahblah] is probably a mailing list, match on it separately */
s1 = strchr (s, '[');
s2 = strchr (s, ']');
if (s1 && s2 && s1 < s2) {
/* probably a mailing list, match on the mailing list name */
tmp = alloca (s2 - s1 + 2);
memcpy (tmp, s1, s2 - s1 + 1);
tmp[s2 - s1 + 1] = 0;
g_strstrip (tmp);
rule_add_subject (context, rule, tmp);
s = s2 + 1;
}
/* Froblah: at the start is probably something important (e.g. bug number) */
s1 = strchr (s, ':');
if (s1) {
tmp = alloca (s1 - s + 1);
memcpy (tmp, s, s1-s);
tmp[s1 - s] = 0;
g_strstrip (tmp);
rule_add_subject (context, rule, tmp);
s = s1+1;
}
/* just lump the rest together */
tmp = alloca (strlen (s) + 1);
strcpy (tmp, s);
g_strstrip (tmp);
rule_add_subject (context, rule, tmp);
}
static void
rule_from_message (FilterRule *rule, RuleContext *context, CamelMimeMessage *msg, int flags)
{
CamelInternetAddress *addr;
rule->grouping = FILTER_GROUP_ANY;
if (flags & AUTO_SUBJECT) {
char *namestr;
rule_match_subject (context, rule, msg->subject);
namestr = g_strdup_printf (_("Subject is %s"), strip_re (msg->subject));
filter_rule_set_name (rule, namestr);
g_free (namestr);
}
/* should parse the from address into an internet address? */
if (flags & AUTO_FROM) {
const CamelInternetAddress *from;
int i;
const char *name, *addr;
char *namestr;
from = camel_mime_message_get_from(msg);
for (i=0;camel_internet_address_get(from, i, &name, &addr); i++) {
rule_add_sender(context, rule, addr);
if (name==NULL || name[0]==0)
name = addr;
namestr = g_strdup_printf(_("Mail from %s"), name);
filter_rule_set_name(rule, namestr);
g_free(namestr);
}
}
if (flags & AUTO_TO) {
addr = (CamelInternetAddress *)camel_mime_message_get_recipients (msg, CAMEL_RECIPIENT_TYPE_TO);
rule_match_recipients (context, rule, addr);
addr = (CamelInternetAddress *)camel_mime_message_get_recipients (msg, CAMEL_RECIPIENT_TYPE_CC);
rule_match_recipients (context, rule, addr);
}
}
FilterRule *
vfolder_rule_from_message (VfolderContext *context, CamelMimeMessage *msg, int flags, const char *source)
{
VfolderRule *rule;
rule = vfolder_rule_new ();
vfolder_rule_add_source (rule, source);
rule_from_message ((FilterRule *)rule, (RuleContext *)context, msg, flags);
return (FilterRule *)rule;
}
FilterRule *
filter_rule_from_message (FilterContext *context, CamelMimeMessage *msg, int flags)
{
FilterFilter *rule;
FilterPart *part;
rule = filter_filter_new ();
rule_from_message ((FilterRule *)rule, (RuleContext *)context, msg, flags);
part = filter_context_next_action (context, NULL);
filter_filter_add_action (rule, filter_part_clone (part));
return (FilterRule *)rule;
}
static void
rule_from_mlist(FilterRule *rule, RuleContext *context, const char *mlist)
{
FilterPart *part;
FilterElement *element;
char *rule_name;
part = rule_context_create_part(context, "mlist");
filter_rule_add_part(rule, part);
element = filter_part_find_element(part, "mlist-type");
filter_option_set_current((FilterOption *)element, "is");
element = filter_part_find_element (part, "mlist");
filter_input_set_value((FilterInput *)element, mlist);
rule_name = g_strdup_printf(_("%s mailing list"), mlist);
filter_rule_set_name((FilterRule *) rule, rule_name);
g_free (rule_name);
}
FilterRule *
vfolder_rule_from_mlist(VfolderContext *context, const char *mlist, const char *source)
{
VfolderRule *rule;
rule = vfolder_rule_new ();
vfolder_rule_add_source (rule, source);
rule_from_mlist((FilterRule *)rule, (RuleContext *)context, mlist);
return (FilterRule *)rule;
}
FilterRule *
filter_rule_from_mlist (FilterContext *context, const char *mlist)
{
FilterFilter *rule;
FilterPart *part;
rule = filter_filter_new ();
rule_from_mlist((FilterRule *)rule, (RuleContext *)context, mlist);
part = filter_context_next_action (context, NULL);
filter_filter_add_action (rule, filter_part_clone (part));
return (FilterRule *)rule;
}
void
filter_gui_add_from_message (CamelMimeMessage *msg, int flags)
{
FilterContext *fc;
char *user, *system;
FilterRule *rule;
extern char *evolution_dir;
g_return_if_fail (msg != NULL);
fc = filter_context_new ();
user = g_strdup_printf ("%s/filters.xml", evolution_dir);
system = EVOLUTION_DATADIR "/evolution/filtertypes.xml";
rule_context_load ((RuleContext *)fc, system, user);
rule = filter_rule_from_message (fc, msg, flags);
filter_rule_set_source (rule, FILTER_SOURCE_INCOMING);
rule_context_add_rule_gui ((RuleContext *)fc, rule, _("Add Filter Rule"), user);
g_free (user);
gtk_object_unref (GTK_OBJECT (fc));
}
void
filter_gui_add_from_mlist (const char *mlist)
{
FilterContext *fc;
char *user, *system;
FilterRule *rule;
extern char *evolution_dir;
fc = filter_context_new ();
user = g_strdup_printf ("%s/filters.xml", evolution_dir);
system = EVOLUTION_DATADIR "/evolution/filtertypes.xml";
rule_context_load ((RuleContext *)fc, system, user);
rule = filter_rule_from_mlist(fc, mlist);
filter_rule_set_source (rule, FILTER_SOURCE_INCOMING);
rule_context_add_rule_gui ((RuleContext *)fc, rule, _("Add Filter Rule"), user);
g_free (user);
gtk_object_unref (GTK_OBJECT (fc));
}