/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
* Michael Zucchi <NotZed@Ximian.com>
*
* Copyright 2000 Ximian, Inc. (www.ximian.com)
* Copyright 2001 Ximian Inc. (www.ximian.com)
*
* 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., 59 Temple Street #330, Boston, MA 02111-1307, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* (from glibc headers:
POSIX says that <sys/types.h> must be included (by the caller) before <regex.h>. */
#include <sys/types.h>
#include <regex.h>
#include <string.h>
#include <ctype.h>
#include "e-util/e-sexp.h"
#include "e-util/e-url.h"
#include "camel-mime-message.h"
#include "camel-filter-search.h"
#include "camel-exception.h"
#include "camel-multipart.h"
#include "camel-stream-mem.h"
#include "camel-search-private.h"
#define d(x)
typedef struct {
CamelMimeMessage *message;
CamelMessageInfo *info;
const char *source;
CamelException *ex;
} FilterMessageSearch;
/* ESExp callbacks */
static ESExpResult *header_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *header_matches (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *header_starts_with (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *header_ends_with (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *header_exists (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *header_soundex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *header_regex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *header_full_regex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *match_all (struct _ESExp *f, int argc, struct _ESExpTerm **argv, FilterMessageSearch *fms);
static ESExpResult *body_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *body_regex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *user_flag (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *user_tag (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *system_flag (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_sent_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_received_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_current_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_score (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_source (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
static ESExpResult *get_size (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms);
/* builtin functions */
static struct {
char *name;
ESExpFunc *func;
int type; /* set to 1 if a function can perform shortcut evaluation, or
doesn't execute everything, 0 otherwise */
} symbols[] = {
{ "match-all", (ESExpFunc *) match_all, 1 },
{ "body-contains", (ESExpFunc *) body_contains, 0 },
{ "body-regex", (ESExpFunc *) body_regex, 0 },
{ "header-contains", (ESExpFunc *) header_contains, 0 },
{ "header-matches", (ESExpFunc *) header_matches, 0 },
{ "header-starts-with", (ESExpFunc *) header_starts_with, 0 },
{ "header-ends-with", (ESExpFunc *) header_ends_with, 0 },
{ "header-exists", (ESExpFunc *) header_exists, 0 },
{ "header-soundex", (ESExpFunc *) header_soundex, 0 },
{ "header-regex", (ESExpFunc *) header_regex, 0 },
{ "header-full-regex", (ESExpFunc *) header_full_regex, 0 },
{ "user-tag", (ESExpFunc *) user_tag, 0 },
{ "user-flag", (ESExpFunc *) user_flag, 0 },
{ "system-flag", (ESExpFunc *) system_flag, 0 },
{ "get-sent-date", (ESExpFunc *) get_sent_date, 0 },
{ "get-received-date", (ESExpFunc *) get_received_date, 0 },
{ "get-current-date", (ESExpFunc *) get_current_date, 0 },
{ "get-score", (ESExpFunc *) get_score, 0 },
{ "get-source", (ESExpFunc *) get_source, 0 },
{ "get-size", (ESExpFunc *) get_size, 0 },
};
static ESExpResult *
check_header (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms, camel_search_match_t how)
{
gboolean matched = FALSE;
ESExpResult *r;
int i;
if (argc > 1 && argv[0]->type == ESEXP_RES_STRING) {
char *name = argv[0]->value.string;
const char *header;
camel_search_t type = CAMEL_SEARCH_TYPE_ENCODED;
if (strcasecmp(name, "x-camel-mlist") == 0) {
header = camel_message_info_mlist(fms->info);
type = CAMEL_SEARCH_TYPE_ASIS;
} else {
header = camel_medium_get_header(CAMEL_MEDIUM(fms->message), argv[0]->value.string);
if (strcasecmp("to", name) == 0 || strcasecmp("cc", name) == 0 || strcasecmp("from", name) == 0)
type = CAMEL_SEARCH_TYPE_ADDRESS_ENCODED;
}
if (header) {
for (i=1; i<argc && !matched; i++) {
if (argv[i]->type == ESEXP_RES_STRING)
matched = camel_search_header_match(header, argv[i]->value.string, how, type);
}
}
}
r = e_sexp_result_new (f, ESEXP_RES_BOOL);
r->value.bool = matched;
return r;
}
static ESExpResult *
header_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
return check_header (f, argc, argv, fms, CAMEL_SEARCH_MATCH_CONTAINS);
}
static ESExpResult *
header_matches (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
return check_header (f, argc, argv, fms, CAMEL_SEARCH_MATCH_EXACT);
}
static ESExpResult *
header_starts_with (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
return check_header (f, argc, argv, fms, CAMEL_SEARCH_MATCH_STARTS);
}
static ESExpResult *
header_ends_with (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
return check_header (f, argc, argv, fms, CAMEL_SEARCH_MATCH_ENDS);
}
static ESExpResult *
header_soundex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
return check_header (f, argc, argv, fms, CAMEL_SEARCH_MATCH_SOUNDEX);
}
static ESExpResult *
header_exists (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
gboolean matched = FALSE;
ESExpResult *r;
int i;
for (i = 0; i < argc && !matched; i++) {
if (argv[i]->type == ESEXP_RES_STRING)
matched = camel_medium_get_header (CAMEL_MEDIUM (fms->message), argv[i]->value.string) != NULL;
}
r = e_sexp_result_new (f, ESEXP_RES_BOOL);
r->value.bool = matched;
return r;
}
static ESExpResult *
header_regex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r = e_sexp_result_new (f, ESEXP_RES_BOOL);
regex_t pattern;
const char *contents;
if (argc > 1 && argv[0]->type == ESEXP_RES_STRING
&& (contents = camel_medium_get_header (CAMEL_MEDIUM (fms->message), argv[0]->value.string))
&& camel_search_build_match_regex (&pattern, CAMEL_SEARCH_MATCH_REGEX |
CAMEL_SEARCH_MATCH_ICASE, argc-1, argv+1,
fms->ex) == 0) {
r->value.bool = regexec (&pattern, contents, 0, NULL, 0) == 0;
regfree (&pattern);
} else
r->value.bool = FALSE;
return r;
}
static gchar *
get_full_header (CamelMimeMessage *message)
{
CamelMimePart *mp = CAMEL_MIME_PART (message);
GString *str = g_string_new ("");
char *ret;
struct _header_raw *h;
for (h = mp->headers; h; h = h->next) {
if (h->value != NULL) {
g_string_append (str, h->name);
if (isspace (h->value[0]))
g_string_append (str, ":");
else
g_string_append (str, ": ");
g_string_append (str, h->value);
}
}
ret = str->str;
g_string_free (str, FALSE);
return ret;
}
static ESExpResult *
header_full_regex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r = e_sexp_result_new (f, ESEXP_RES_BOOL);
regex_t pattern;
char *contents;
if (camel_search_build_match_regex (&pattern, CAMEL_SEARCH_MATCH_REGEX |
CAMEL_SEARCH_MATCH_ICASE, argc-1, argv+1, fms->ex) == 0) {
contents = get_full_header (fms->message);
r->value.bool = regexec (&pattern, contents, 0, NULL, 0) == 0;
g_free (contents);
regfree (&pattern);
} else
r->value.bool = FALSE;
return r;
}
static ESExpResult *
match_all (struct _ESExp *f, int argc, struct _ESExpTerm **argv, FilterMessageSearch *fms)
{
/* match-all: when dealing with single messages is a no-op */
ESExpResult *r;
if (argc > 0)
return e_sexp_term_eval (f, argv[0]);
r = e_sexp_result_new (f, ESEXP_RES_BOOL);
r->value.bool = FALSE;
return r;
}
static ESExpResult *
body_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r = e_sexp_result_new (f, ESEXP_RES_BOOL);
regex_t pattern;
if (camel_search_build_match_regex (&pattern, CAMEL_SEARCH_MATCH_ICASE, argc, argv, fms->ex) == 0) {
r->value.bool = camel_search_message_body_contains ((CamelDataWrapper *)fms->message, &pattern);
regfree (&pattern);
} else
r->value.bool = FALSE;
return r;
}
static ESExpResult *
body_regex (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r = e_sexp_result_new(f, ESEXP_RES_BOOL);
regex_t pattern;
if (camel_search_build_match_regex (&pattern, CAMEL_SEARCH_MATCH_ICASE |
CAMEL_SEARCH_MATCH_REGEX, argc, argv, fms->ex) == 0) {
r->value.bool = camel_search_message_body_contains ((CamelDataWrapper *)fms->message, &pattern);
regfree (&pattern);
} else
r->value.bool = FALSE;
return r;
}
static ESExpResult *
user_flag (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
gboolean truth = FALSE;
int i;
/* performs an OR of all words */
for (i = 0; i < argc && !truth; i++) {
if (argv[i]->type == ESEXP_RES_STRING
&& camel_flag_get (&fms->info->user_flags, argv[i]->value.string)) {
truth = TRUE;
break;
}
}
r = e_sexp_result_new (f, ESEXP_RES_BOOL);
r->value.bool = truth;
return r;
}
static ESExpResult *
system_flag (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
gboolean truth = FALSE;
if (argc == 1)
truth = camel_system_flag_get (fms->info->flags, argv[0]->value.string);
r = e_sexp_result_new (f, ESEXP_RES_BOOL);
r->value.bool = truth;
return r;
}
static ESExpResult *
user_tag (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
const char *tag;
tag = camel_tag_get (&fms->info->user_tags, argv[0]->value.string);
r = e_sexp_result_new (f, ESEXP_RES_STRING);
r->value.string = g_strdup (tag ? tag : "");
return r;
}
static ESExpResult *
get_sent_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
r = e_sexp_result_new (f, ESEXP_RES_INT);
r->value.number = camel_mime_message_get_date (fms->message, NULL);
return r;
}
static ESExpResult *
get_received_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
r = e_sexp_result_new (f, ESEXP_RES_INT);
r->value.number = camel_mime_message_get_date_received (fms->message, NULL);
return r;
}
static ESExpResult *
get_current_date (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
r = e_sexp_result_new (f, ESEXP_RES_INT);
r->value.number = time (NULL);
return r;
}
static ESExpResult *
get_score (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
const char *tag;
tag = camel_tag_get (&fms->info->user_tags, "score");
r = e_sexp_result_new (f, ESEXP_RES_INT);
if (tag)
r->value.number = atoi (tag);
else
r->value.number = 0;
return r;
}
static ESExpResult *
get_source (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
char *src;
char *tmp;
r = e_sexp_result_new (f, ESEXP_RES_STRING);
if (fms->source) {
src = e_url_shroud (fms->source);
} else {
src = g_strdup (camel_mime_message_get_source (fms->message));
}
/* This is an abusive hack */
if ( src && (tmp = strstr (src, "://")) ) {
tmp += 3;
tmp = strchr (tmp, '/');
if (tmp)
*tmp = '\0';
}
r->value.string = src;
return r;
}
/* remember, the size comparisons are done at Kbytes */
static ESExpResult *
get_size (struct _ESExp *f, int argc, struct _ESExpResult **argv, FilterMessageSearch *fms)
{
ESExpResult *r;
r = e_sexp_result_new(f, ESEXP_RES_INT);
r->value.number = fms->info->size / 1024;
return r;
}
gboolean
camel_filter_search_match (CamelMimeMessage *message, CamelMessageInfo *info,
const char *source, const char *expression, CamelException *ex)
{
FilterMessageSearch fms;
ESExp *sexp;
ESExpResult *result;
gboolean retval;
int i;
fms.message = message;
fms.info = info;
fms.source = source;
fms.ex = ex;
sexp = e_sexp_new ();
for (i = 0; i < sizeof (symbols) / sizeof (symbols[0]); i++) {
if (symbols[i].type == 1)
e_sexp_add_ifunction (sexp, 0, symbols[i].name, (ESExpIFunc *)symbols[i].func, &fms);
else
e_sexp_add_function (sexp, 0, symbols[i].name, symbols[i].func, &fms);
}
e_sexp_input_text (sexp, expression, strlen (expression));
if (e_sexp_parse (sexp) == -1) {
if (!camel_exception_is_set (ex))
camel_exception_setv (ex, 1, _("Error executing filter search: %s: %s"),
e_sexp_error (sexp), expression);
goto error;
}
result = e_sexp_eval (sexp);
if (result == NULL) {
if (!camel_exception_is_set (ex))
camel_exception_setv (ex, 1, _("Error executing filter search: %s: %s"),
e_sexp_error (sexp), expression);
goto error;
}
if (result->type == ESEXP_RES_BOOL)
retval = result->value.bool;
else
retval = FALSE;
e_sexp_result_free (sexp, result);
e_sexp_unref (sexp);
return retval;
error:
e_sexp_unref (sexp);
return FALSE;
}
