/*
code for autogenerating rules or filters from a message
*/
#include <ctype.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <bonobo.h>
#include <libgnomeui/gnome-app-helper.h>
#include <libgnomeui/gnome-popup-menu.h>
#include "Evolution.h"
#include "evolution-storage.h"
#include "evolution-shell-component.h"
#include "folder-browser.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:addr);
filter_rule_set_name(rule, namestr);
g_free(namestr);
}
}
/* remove 're' part of a subject */
static const char *
strip_re(const char *s)
{
const char *p;
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 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+1);
memcpy(tmp, s1, s2-s1);
tmp[s2-s1] = 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) {
rule_match_subject(context, rule, msg->subject);
filter_rule_set_name(rule, strip_re(msg->subject));
}
/* should parse the from address into an internet address? */
if (flags & AUTO_FROM) {
struct _header_address *haddr, *scan;
char *name, *namestr;
haddr = header_address_decode(msg->from);
scan = haddr;
while (scan) {
if (scan->type == HEADER_ADDRESS_NAME) {
rule_add_sender(context, rule, scan->v.addr);
if (scan->name)
name = scan->name;
else
name = scan->v.addr;
namestr = g_strdup_printf("Mail from %s", name);
filter_rule_set_name(rule, namestr);
g_free(namestr);
}
scan = scan->next;
}
header_address_unref(haddr);
}
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;
rule = filter_filter_new();
rule_from_message((FilterRule *)rule, (RuleContext *)context, msg, flags);
/* should we define the default action? */
return (FilterRule *)rule;
}
void
filter_gui_add_from_message(CamelMimeMessage *msg, int flags)
{
FilterContext *fc;
char *userrules, *systemrules;
FilterRule *rule;
extern char *evolution_dir;
fc = filter_context_new();
userrules = g_strdup_printf("%s/filters.xml", evolution_dir);
systemrules = g_strdup_printf("%s/evolution/filtertypes.xml", EVOLUTION_DATADIR);
rule_context_load((RuleContext *)fc, systemrules, userrules);
rule = filter_rule_from_message(fc, msg, flags);
rule_context_add_rule_gui((RuleContext *)fc, rule, "Add Filter Rule", userrules);
g_free (userrules);
g_free (systemrules);
gtk_object_unref((GtkObject *)fc);
}