2008-11-27 [colin] 3.6.1cvs47
[claws.git] / src / matcher.c
index f25d61c8061044bc1e3e811148caa6db802c58eb..6ae1c0df2802f319e4bdcbb973f8a06ae7b81c89 100644 (file)
@@ -256,7 +256,44 @@ MatcherProp *matcherprop_new(gint criteria, const gchar *header,
        prop = g_new0(MatcherProp, 1);
        prop->criteria = criteria;
        prop->header = header != NULL ? g_strdup(header) : NULL;
+
+       prop->expr = expr != NULL ? g_strdup(expr) : NULL;
+
+       prop->matchtype = matchtype;
+       prop->preg = NULL;
+       prop->value = value;
+       prop->error = 0;
+
+       return prop;
+}
+
+/*!
+ *\brief       Allocate a structure for a filtering / scoring
+ *             "condition" (a matcher structure)
+ *             Same as matcherprop_new, except it doesn't change the expr's 
+ *             case.
+ *
+ *\param       criteria Criteria ID (MATCHCRITERIA_XXXX)
+ *\param       header Header string (if criteria is MATCHCRITERIA_HEADER
+                       or MATCHCRITERIA_FOUND_IN_ADDRESSBOOK)
+ *\param       matchtype Type of action (MATCHTYPE_XXX)
+ *\param       expr String value or expression to check
+ *\param       value Integer value to check
+ *
+ *\return      MatcherProp * Pointer to newly allocated structure
+ */
+MatcherProp *matcherprop_new_create(gint criteria, const gchar *header,
+                             gint matchtype, const gchar *expr,
+                             int value)
+{
+       MatcherProp *prop;
+
+       prop = g_new0(MatcherProp, 1);
+       prop->criteria = criteria;
+       prop->header = header != NULL ? g_strdup(header) : NULL;
+
        prop->expr = expr != NULL ? g_strdup(expr) : NULL;
+
        prop->matchtype = matchtype;
        prop->preg = NULL;
        prop->value = value;
@@ -317,10 +354,10 @@ static gboolean match_with_addresses_in_addressbook
        g_return_val_if_fail(address_list != NULL, FALSE);
 
        debug_print("match_with_addresses_in_addressbook(%d, %s)\n",
-                               g_slist_length(address_list), folderpath);
+                               g_slist_length(address_list), folderpath?folderpath:"(null)");
 
        if (folderpath == NULL ||
-               strcasecmp(folderpath, _("Any")) == 0 ||
+               strcasecmp(folderpath, "Any") == 0 ||
                *folderpath == '\0')
                path = NULL;
        else
@@ -357,7 +394,7 @@ static gboolean match_with_addresses_in_addressbook
                                && prefs_common.filtering_debug_level >= FILTERING_DEBUG_LEVEL_HIGH
                                && !found) {
                        log_print(LOG_DEBUG_FILTERING,
-                                       "address [ %s ] doesn't match\n",
+                                       "address [ %s ] does NOT match\n",
                                        (gchar *)walk->data);
                }
                g_free(walk->data);
@@ -403,22 +440,34 @@ static gboolean match_with_addresses_in_addressbook
  *             matcher structure
  */
 static gboolean matcherprop_string_match(MatcherProp *prop, const gchar *str,
-                                                                               const gchar *debug_context)
+                                        const gchar *debug_context)
 {
        gchar *str1;
-       gchar *str2;
+       gchar *down_expr;
        gboolean ret = FALSE;
-
+       gboolean should_free = FALSE;
        if (str == NULL)
                return FALSE;
 
+       if (prop->matchtype == MATCHTYPE_REGEXPCASE ||
+           prop->matchtype == MATCHTYPE_MATCHCASE) {
+               str1 = g_utf8_casefold(str, -1);
+               down_expr = g_utf8_casefold(prop->expr, -1);
+               should_free = TRUE;
+       } else {
+               str1 = (gchar *)str;
+               down_expr = (gchar *)prop->expr;
+               should_free = FALSE;
+       }
+
        switch (prop->matchtype) {
        case MATCHTYPE_REGEXPCASE:
        case MATCHTYPE_REGEXP:
+#ifndef G_OS_WIN32
                if (!prop->preg && (prop->error == 0)) {
                        prop->preg = g_new0(regex_t, 1);
                        /* if regexp then don't use the escaped string */
-                       if (regcomp(prop->preg, prop->expr,
+                       if (regcomp(prop->preg, down_expr,
                                    REG_NOSUB | REG_EXTENDED
                                    | ((prop->matchtype == MATCHTYPE_REGEXPCASE)
                                    ? REG_ICASE : 0)) != 0) {
@@ -427,10 +476,12 @@ static gboolean matcherprop_string_match(MatcherProp *prop, const gchar *str,
                                prop->preg = NULL;
                        }
                }
-               if (prop->preg == NULL)
-                       return FALSE;
+               if (prop->preg == NULL) {
+                       ret = FALSE;
+                       goto free_strs;
+               }
                
-               if (regexec(prop->preg, str, 0, NULL, 0) == 0)
+               if (regexec(prop->preg, str1, 0, NULL, 0) == 0)
                        ret = TRUE;
                else
                        ret = FALSE;
@@ -443,19 +494,22 @@ static gboolean matcherprop_string_match(MatcherProp *prop, const gchar *str,
                        strretchomp(stripped);
                        if (ret) {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "%s value [ %s ] matches regular expression [ %s ]\n",
-                                               debug_context, stripped, prop->expr);
+                                               "%s value [ %s ] matches regular expression [ %s ] (%s)\n",
+                                               debug_context, stripped, prop->expr,
+                                               prop->matchtype == MATCHTYPE_REGEXP ? _("Case sensitive"):_("Case insensitive"));
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "%s value [ %s ] doesn't matches regular expression [ %s ]\n",
-                                               debug_context, stripped, prop->expr);
+                                               "%s value [ %s ] does NOT match regular expression [ %s ] (%s)\n",
+                                               debug_context, stripped, prop->expr,
+                                               prop->matchtype == MATCHTYPE_REGEXP ? _("Case sensitive"):_("Case insensitive"));
                        }
                        g_free(stripped);
                }
                break;
-                       
+#endif                 
+       case MATCHTYPE_MATCHCASE:
        case MATCHTYPE_MATCH:
-               ret = (strstr(str, prop->expr) != NULL);
+               ret = (strstr(str1, down_expr) != NULL);
 
                /* debug output */
                if (debug_filtering_session
@@ -465,49 +519,28 @@ static gboolean matcherprop_string_match(MatcherProp *prop, const gchar *str,
                        strretchomp(stripped);
                        if (ret) {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "%s value [ %s ] contains [ %s ] (case sensitive)\n",
-                                               debug_context, stripped, prop->expr);
+                                               "%s value [ %s ] contains [ %s ] (%s)\n",
+                                               debug_context, stripped, prop->expr,
+                                               prop->matchtype == MATCHTYPE_MATCH ? _("Case sensitive"):_("Case insensitive"));
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "%s value [ %s ] doesn't contains [ %s ] (case sensitive)\n",
-                                               debug_context, stripped, prop->expr);
+                                               "%s value [ %s ] does NOT contain [ %s ] (%s)\n",
+                                               debug_context, stripped, prop->expr,
+                                               prop->matchtype == MATCHTYPE_MATCH ? _("Case sensitive"):_("Case insensitive"));
                        }
                        g_free(stripped);
                }
                break;
 
-       /* FIXME: put upper in unesc_str */
-       case MATCHTYPE_MATCHCASE:
-               str2 = alloca(strlen(prop->expr) + 1);
-               strcpy(str2, prop->expr);
-               g_strup(str2);
-               str1 = alloca(strlen(str) + 1);
-               strcpy(str1, str);
-               g_strup(str1);
-               ret = (strstr(str1, str2) != NULL);
-
-               /* debug output */
-               if (debug_filtering_session
-                               && prefs_common.filtering_debug_level >= FILTERING_DEBUG_LEVEL_HIGH) {
-                       gchar *stripped = g_strdup(str);
-
-                       strretchomp(stripped);
-                       if (ret) {
-                               log_print(LOG_DEBUG_FILTERING,
-                                               "%s value [ %s ] contains [ %s ] (case insensitive)\n",
-                                               debug_context, stripped, prop->expr);
-                       } else {
-                               log_print(LOG_DEBUG_FILTERING,
-                                               "%s [ %s ] doesn't contains [ %s ] (case insensitive)\n",
-                                               debug_context, stripped, prop->expr);
-                       }
-                       g_free(stripped);
-               }
-               break;
-               
        default:
                break;
        }
+       
+free_strs:
+       if (should_free) {
+               g_free(str1);
+               g_free(down_expr);
+       }
        return ret;
 }
 
@@ -624,7 +657,6 @@ static void *matcher_test_thread(void *data)
        pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
 
        result = system(td->cmd);
-       if (result) perror("system");
        td->done = TRUE; /* let the caller thread join() */
        return GINT_TO_POINTER(result);
 }
@@ -646,6 +678,7 @@ static gboolean matcherprop_match_test(const MatcherProp *prop,
        gint retval;
 #ifdef USE_PTHREAD
        pthread_t pt;
+       pthread_attr_t pta;
        thread_data *td = g_new0(thread_data, 1);
        void *res = NULL;
        time_t start_time = time(NULL);
@@ -660,7 +693,7 @@ static gboolean matcherprop_match_test(const MatcherProp *prop,
        if (cmd == NULL)
                return FALSE;
 
-#if (defined USE_PTHREAD && ((defined __GLIBC__ && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3))) || !defined __GLIBC__))
+#ifdef USE_PTHREAD
        /* debug output */
        if (debug_filtering_session
                        && prefs_common.filtering_debug_level >= FILTERING_DEBUG_LEVEL_HIGH) {
@@ -671,11 +704,12 @@ static gboolean matcherprop_match_test(const MatcherProp *prop,
 
        td->cmd = cmd;
        td->done = FALSE;
-       if (pthread_create(&pt, PTHREAD_CREATE_JOINABLE, 
-                       matcher_test_thread, td) != 0)
+       if (pthread_attr_init(&pta) != 0 ||
+           pthread_attr_setdetachstate(&pta, PTHREAD_CREATE_JOINABLE) != 0 ||
+           pthread_create(&pt, &pta, matcher_test_thread, td) != 0)
                retval = system(cmd);
        else {
-               printf("waiting for test thread\n");
+               debug_print("waiting for test thread\n");
                while(!td->done) {
                        /* don't let the interface freeze while waiting */
                        claws_do_idle();
@@ -687,7 +721,7 @@ static gboolean matcherprop_match_test(const MatcherProp *prop,
                }
                pthread_join(pt, &res);
                retval = GPOINTER_TO_INT(res);
-               printf(" test thread returned %d\n", retval);
+               debug_print(" test thread returned %d\n", retval);
        }
        g_free(td);
 #else
@@ -778,7 +812,7 @@ gboolean matcherprop_match(MatcherProp *prop,
                                                color, prop->value);
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message color value [ %d ] doesn't matches color value [ %d ]\n",
+                                               "message color value [ %d ] does NOT match color value [ %d ]\n",
                                                color, prop->value);
                        }
                }
@@ -798,7 +832,7 @@ gboolean matcherprop_match(MatcherProp *prop,
                                                color, prop->value);
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message color value [ %d ] doesn't matches color value [ %d ]\n",
+                                               "message color value [ %d ] does NOT match color value [ %d ]\n",
                                                color, prop->value);
                        }
                }
@@ -1000,76 +1034,76 @@ gboolean matcherprop_match(MatcherProp *prop,
        }
        case MATCHCRITERIA_SIZE_GREATER:
        {
-               /* FIXME: info->size is an off_t */
-               gboolean ret = (info->size > (off_t) prop->value);
+               /* FIXME: info->size is a goffset */
+               gboolean ret = (info->size > (goffset) prop->value);
 
                /* debug output */
                if (debug_filtering_session
                                && prefs_common.filtering_debug_level >= FILTERING_DEBUG_LEVEL_HIGH) {
                        if (ret) {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message size [ %ld ] is greater than [ %d ]\n",
-                                               info->size, prop->value);
+                                               "message size is greater than [ %d ]\n",
+                                               prop->value);
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message size [ %ld ] is not greater than [ %d ]\n",
-                                               info->size, prop->value);
+                                               "message size is not greater than [ %d ]\n",
+                                               prop->value);
                        }
                }
                return ret;
        }
        case MATCHCRITERIA_SIZE_SMALLER:
        {
-               /* FIXME: info->size is an off_t */
-               gboolean ret = (info->size < (off_t) prop->value);
+               /* FIXME: info->size is a goffset */
+               gboolean ret = (info->size < (goffset) prop->value);
 
                /* debug output */
                if (debug_filtering_session
                                && prefs_common.filtering_debug_level >= FILTERING_DEBUG_LEVEL_HIGH) {
                        if (ret) {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message size [ %ld ] is smaller than [ %d ]\n",
-                                               info->size, prop->value);
+                                               "message size is smaller than [ %d ]\n",
+                                               prop->value);
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message size [ %ld ] is not smaller than [ %d ]\n",
-                                               info->size, prop->value);
+                                               "message size is not smaller than [ %d ]\n",
+                                               prop->value);
                        }
                }
                return ret;
        }
        case MATCHCRITERIA_SIZE_EQUAL:
        {
-               /* FIXME: info->size is an off_t */
-               gboolean ret = (info->size == (off_t) prop->value);
+               /* FIXME: info->size is a goffset */
+               gboolean ret = (info->size == (goffset) prop->value);
 
                /* debug output */
                if (debug_filtering_session
                                && prefs_common.filtering_debug_level >= FILTERING_DEBUG_LEVEL_HIGH) {
                        if (ret) {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message size [ %ld ] is equal to [ %d ]\n",
-                                               info->size, prop->value);
+                                               "message size is equal to [ %d ]\n",
+                                               prop->value);
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message size [ %ld ] is not equal to [ %d ]\n",
-                                               info->size, prop->value);
+                                               "message size is not equal to [ %d ]\n",
+                                               prop->value);
                        }
                }
                return ret;
        }
        case MATCHCRITERIA_PARTIAL:
        {
-               /* FIXME: info->size is an off_t */
-               gboolean ret = (info->total_size != 0 && info->size != (off_t)info->total_size);
+               /* FIXME: info->size is a goffset */
+               gboolean ret = (info->total_size != 0 && info->size != (goffset)info->total_size);
 
                /* debug output */
                if (debug_filtering_session
                                && prefs_common.filtering_debug_level >= FILTERING_DEBUG_LEVEL_HIGH) {
                        if (ret) {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message is partially downloaded, size [ %ld ] is less than total size [ %d ])\n",
-                                               info->size, info->total_size);
+                                               "message is partially downloaded, size is less than total size [ %d ])\n",
+                                               info->total_size);
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
                                                "message is not partially downloaded\n");
@@ -1079,8 +1113,8 @@ gboolean matcherprop_match(MatcherProp *prop,
        }
        case MATCHCRITERIA_NOT_PARTIAL:
        {
-               /* FIXME: info->size is an off_t */
-               gboolean ret = (info->total_size == 0 || info->size == (off_t)info->total_size);
+               /* FIXME: info->size is a goffset */
+               gboolean ret = (info->total_size == 0 || info->size == (goffset)info->total_size);
 
                /* debug output */
                if (debug_filtering_session
@@ -1090,8 +1124,8 @@ gboolean matcherprop_match(MatcherProp *prop,
                                                "message is not partially downloaded\n");
                        } else {
                                log_print(LOG_DEBUG_FILTERING,
-                                               "message is partially downloaded, size [ %ld ] is less than total size [ %d ])\n",
-                                               info->size, info->total_size);
+                                               "message is partially downloaded, size is less than total size [ %d ])\n",
+                                               info->total_size);
                        }
                }
                return ret;
@@ -1176,6 +1210,7 @@ void matcherlist_free(MatcherList *cond)
        for (l = cond->matchers ; l != NULL ; l = g_slist_next(l)) {
                matcherprop_free((MatcherProp *) l->data);
        }
+       g_slist_free(cond->matchers);
        g_free(cond);
 }
 
@@ -1241,9 +1276,9 @@ static gboolean matcherprop_match_one_header(MatcherProp *matcher,
                        gboolean found = FALSE;
 
                        /* how many address headers are me trying to mach? */
-                       if (strcasecmp(matcher->header, _("Any")) == 0)
+                       if (strcasecmp(matcher->header, "Any") == 0)
                                match = MATCH_ANY;
-                       else if (strcasecmp(matcher->header, Q_("Filtering Matcher Menu|All")) == 0)
+                       else if (strcasecmp(matcher->header, "All") == 0)
                                        match = MATCH_ALL;
 
                        if (match == MATCH_ONE) {
@@ -1374,9 +1409,9 @@ static gboolean matcherlist_match_headers(MatcherList *matchers, FILE *fp)
                                         procheader_headername_equal(header->name, "Reply-To") ||
                                         procheader_headername_equal(header->name, "Sender"))) {
 
-                                       if (strcasecmp(matcher->header, _("Any")) == 0)
+                                       if (strcasecmp(matcher->header, "Any") == 0)
                                                match = MATCH_ANY;
-                                       else if (strcasecmp(matcher->header, Q_("Filtering Matcher Menu|All")) == 0)
+                                       else if (strcasecmp(matcher->header, "All") == 0)
                                                match = MATCH_ALL;
                                        else
                                                match = MATCH_ONE;
@@ -1968,9 +2003,9 @@ static void add_str_default(gchar ** dest,
 
 /* matching_build_command() - preferably cmd should be unescaped */
 /*!
- *\brief       Build the command line to execute
+ *\brief       Build the command-line to execute
  *
- *\param       cmd String with command line specifiers
+ *\param       cmd String with command-line specifiers
  *\param       info Message info to use for command
  *
  *\return      gchar * Newly allocated string
@@ -2125,7 +2160,7 @@ gchar *matching_build_command(const gchar *cmd, MsgInfo *info)
  *\param       fp File
  *\param       prefs_filtering List of filtering conditions
  */
-static void prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
+static int prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
 {
        GSList *cur = NULL;
 
@@ -2143,19 +2178,19 @@ static void prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
                if (prop->enabled) {
                        if (fputs("enabled ", fp) == EOF) {
                                FILE_OP_ERROR("filtering config", "fputs");
-                               return;
+                               return -1;
                        }
                } else {
                        if (fputs("disabled ", fp) == EOF) {
                                FILE_OP_ERROR("filtering config", "fputs");
-                               return;
+                               return -1;
                        }
                }
 
                if (fputs("rulename \"", fp) == EOF) {
                        FILE_OP_ERROR("filtering config", "fputs");
                        g_free(filtering_str);
-                       return;
+                       return -1;
                }
                tmp_name = prop->name;
                while (tmp_name && *tmp_name != '\0') {
@@ -2163,14 +2198,14 @@ static void prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
                                if (fputc(*tmp_name, fp) == EOF) {
                                        FILE_OP_ERROR("filtering config", "fputs || fputc");
                                        g_free(filtering_str);
-                                       return;
+                                       return -1;
                                }
                        } else if (*tmp_name == '"') {
                                if (fputc('\\', fp) == EOF ||
                                    fputc('"', fp) == EOF) {
                                        FILE_OP_ERROR("filtering config", "fputs || fputc");
                                        g_free(filtering_str);
-                                       return;
+                                       return -1;
                                }
                        }
                        tmp_name ++;
@@ -2178,7 +2213,7 @@ static void prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
                if (fputs("\" ", fp) == EOF) {
                        FILE_OP_ERROR("filtering config", "fputs");
                        g_free(filtering_str);
-                       return;
+                       return -1;
                }
 
                if (prop->account_id != 0) {
@@ -2188,7 +2223,7 @@ static void prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
                        if (fputs(tmp, fp) == EOF) {
                                FILE_OP_ERROR("filtering config", "fputs");
                                g_free(tmp);
-                               return;
+                               return -1;
                        }
                        g_free(tmp);
                }
@@ -2197,12 +2232,19 @@ static void prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
                    fputc('\n', fp) == EOF) {
                        FILE_OP_ERROR("filtering config", "fputs || fputc");
                        g_free(filtering_str);
-                       return;
+                       return -1;
                }
                g_free(filtering_str);
        }
+       
+       return 0;
 }
 
+typedef struct _NodeLoopData {
+       FILE *fp;
+       gboolean error;
+} NodeLoopData;
+
 /*!
  *\brief       Write matchers from a folder item
  *
@@ -2211,10 +2253,10 @@ static void prefs_filtering_write(FILE *fp, GSList *prefs_filtering)
  *
  *\return      gboolean FALSE
  */
-static gboolean prefs_matcher_write_func(GNode *node, gpointer data)
+static gboolean prefs_matcher_write_func(GNode *node, gpointer d)
 {
        FolderItem *item;
-       FILE *fp = data;
+       NodeLoopData *data = (NodeLoopData *)d;
        gchar *id;
        GSList *prefs_filtering;
 
@@ -2228,11 +2270,20 @@ static gboolean prefs_matcher_write_func(GNode *node, gpointer data)
         prefs_filtering = item->prefs->processing;
 
        if (prefs_filtering != NULL) {
-               fprintf(fp, "[%s]\n", id);
-               prefs_filtering_write(fp, prefs_filtering);
-               fputc('\n', fp);
+               if (fprintf(data->fp, "[%s]\n", id) < 0) {
+                       data->error = TRUE;
+                       goto fail;
+               }
+               if (prefs_filtering_write(data->fp, prefs_filtering) < 0) {
+                       data->error = TRUE;
+                       goto fail;
+               }
+               if (fputc('\n', data->fp) == EOF) {
+                       data->error = TRUE;
+                       goto fail;
+               }
        }
-
+fail:
        g_free(id);
 
        return FALSE;
@@ -2243,32 +2294,44 @@ static gboolean prefs_matcher_write_func(GNode *node, gpointer data)
  *
  *\param       fp File
  */
-static void prefs_matcher_save(FILE *fp)
+static int prefs_matcher_save(FILE *fp)
 {
        GList *cur;
+       NodeLoopData data;
+       
+       data.fp = fp;
+       data.error = FALSE;
 
        for (cur = folder_get_list() ; cur != NULL ; cur = g_list_next(cur)) {
                Folder *folder;
 
                folder = (Folder *) cur->data;
                g_node_traverse(folder->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
-                               prefs_matcher_write_func, fp);
+                               prefs_matcher_write_func, &data);
        }
         
+       if (data.error == TRUE)
+               return -1;
+
         /* pre global rules */
-        fprintf(fp, "[preglobal]\n");
-        prefs_filtering_write(fp, pre_global_processing);
-        fputc('\n', fp);
+        if (fprintf(fp, "[preglobal]\n") < 0 ||
+            prefs_filtering_write(fp, pre_global_processing) < 0 ||
+            fputc('\n', fp) == EOF)
+               return -1;
 
         /* post global rules */
-        fprintf(fp, "[postglobal]\n");
-        prefs_filtering_write(fp, post_global_processing);
-        fputc('\n', fp);
+        if (fprintf(fp, "[postglobal]\n") < 0 ||
+            prefs_filtering_write(fp, post_global_processing) < 0 ||
+            fputc('\n', fp) == EOF)
+               return -1;
         
         /* filtering rules */
-        fprintf(fp, "[filtering]\n");
-        prefs_filtering_write(fp, filtering_rules);
-        fputc('\n', fp);
+       if (fprintf(fp, "[filtering]\n") < 0 ||
+            prefs_filtering_write(fp, filtering_rules) < 0 ||
+            fputc('\n', fp) == EOF)
+               return -1;
+
+       return 0;
 }
 
 /*!
@@ -2290,14 +2353,13 @@ void prefs_matcher_write_config(void)
                return;
        }
 
-
-       prefs_matcher_save(pfile->fp);
-
        g_free(rcpath);
 
-       if (prefs_file_close(pfile) < 0) {
+       if (prefs_matcher_save(pfile->fp) < 0) {
                g_warning("failed to write configuration to file\n");
-               return;
+               prefs_file_close_revert(pfile);
+       } else if (prefs_file_close(pfile) < 0) {
+               g_warning("failed to save configuration to file\n");
        }
 }
 
@@ -2309,7 +2371,7 @@ static void matcher_add_rulenames(const gchar *rcpath)
        FILE *src = g_fopen(rcpath, "rb");
        FILE *dst = g_fopen(newpath, "wb");
        gchar buf[BUFFSIZE];
-
+       int r;
        if (dst == NULL) {
                perror("fopen");
                g_free(newpath);
@@ -2321,10 +2383,10 @@ static void matcher_add_rulenames(const gchar *rcpath)
                && strncmp(buf, "rulename \"", 10)
                && strncmp(buf, "enabled rulename \"", 18)
                && strncmp(buf, "disabled rulename \"", 18)) {
-                       fwrite("enabled rulename \"\" ",
+                       r = fwrite("enabled rulename \"\" ",
                                strlen("enabled rulename \"\" "), 1, dst);
                }
-               fwrite(buf, strlen(buf), 1, dst);
+               r = fwrite(buf, strlen(buf), 1, dst);
        }
        fclose(dst);
        fclose(src);
@@ -2368,7 +2430,7 @@ void prefs_matcher_read_config(void)
        else {
                /* previous version compatibility */
 
-               /* printf("reading filtering\n"); */
+               /* g_print("reading filtering\n"); */
                rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
                                     FILTERING_RC, NULL);
                f = g_fopen(rcpath, "rb");
@@ -2379,7 +2441,7 @@ void prefs_matcher_read_config(void)
                        fclose(matcher_parserin);
                }
                
-               /* printf("reading scoring\n"); */
+               /* g_print("reading scoring\n"); */
                rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
                                     SCORING_RC, NULL);
                f = g_fopen(rcpath, "rb");