Add mod_blacklist from contrib.

Can be used to maintain lists of numbers and query/modify them with api commands.

Example:
blacklist add <list> <number>
blacklist del <list> <number>
blacklist check <list> <number> (outputs true or false)

build/modules.conf.in

@@ -2,6 +2,7 @@ loggers/mod_console
 loggers/mod_logfile
 loggers/mod_syslog
 #applications/mod_cidlookup
+#applications/mod_blacklist
 applications/mod_commands
 applications/mod_conference
 applications/mod_dptools

src/mod/applications/mod_blacklist/mod_blacklist.c

+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005-2011, Anthony Minessale II <anthm@freeswitch.org>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ *
+ * The Initial Developer of the Original Code is
+ * Anthony Minessale II <anthm@freeswitch.org>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * 
+ * Mathieu Rene <mrene@avgs.ca>
+ *
+ * mod_blacklist.c -- Blacklist module
+ *
+ */
+#include <switch.h>
+
+/* Prototypes */
+SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_blacklist_shutdown);
+SWITCH_MODULE_RUNTIME_FUNCTION(mod_blacklist_runtime);
+SWITCH_MODULE_LOAD_FUNCTION(mod_blacklist_load);
+
+
+SWITCH_MODULE_DEFINITION(mod_blacklist, mod_blacklist_load, mod_blacklist_shutdown, NULL);
+
+typedef struct {
+	switch_hash_t *list;
+	switch_mutex_t *list_mutex;
+	switch_memory_pool_t *pool;
+} blacklist_t;
+
+static struct {
+	switch_hash_t *lists;
+	switch_mutex_t *lists_mutex;
+	switch_memory_pool_t *pool;
+} globals;
+
+blacklist_t *blacklist_create(const char *name) 
+{
+	switch_memory_pool_t *pool = NULL;
+	blacklist_t *bl = NULL;
+	
+	switch_core_new_memory_pool(&pool);
+	bl = switch_core_alloc(pool, sizeof(*bl));
+	switch_assert(bl);
+	bl->pool = pool;
+	
+	switch_core_hash_init(&bl->list, pool);
+	switch_mutex_init(&bl->list_mutex, SWITCH_MUTEX_NESTED, pool);
+	
+	return bl;
+}
+
+void blacklist_free(blacklist_t *bl)
+{
+	switch_core_destroy_memory_pool(&bl->pool);
+}
+
+
+void trim(char *string)
+{
+	char *p;
+	if ((p = strchr(string, '\n'))) {
+		*p = '\0';
+	}
+	if ((p = strchr(string, '\r'))) {
+		*p = '\0';
+	}
+}
+
+static switch_status_t load_list(const char *name, const char *filename)
+{
+	FILE *f;
+	blacklist_t *bl = blacklist_create(name);
+	/* Create a hashtable + mutex for that list */
+	
+	if ((f = fopen(filename, "r"))) {
+		char buf[1024] = {0};
+		while (fgets(buf, 1024, f)) {
+			trim(buf);
+			switch_core_hash_insert(bl->list, buf, (void*)SWITCH_TRUE);
+		}
+	} else {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't open [%s] to load list [%s]\n", filename, name);
+		return SWITCH_STATUS_FALSE;
+	}
+	
+	switch_core_hash_insert(globals.lists, name, bl);
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Loaded list [%s]\n", name);
+	
+	
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t do_config(switch_bool_t reload)
+{
+	/* Load up blacklists */
+	switch_xml_t xml, cfg, lists, list;
+	switch_hash_index_t *hi;
+	
+	if (!(xml = switch_xml_open_cfg("mod_blacklist.conf", &cfg, NULL))) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't load configuration section\n");
+		return SWITCH_STATUS_FALSE;
+	}
+	
+	switch_mutex_lock(globals.lists_mutex);
+	
+	/* Destroy any active lists */
+	while ((hi = switch_hash_first(NULL, globals.lists))) {
+		const void *key;
+		void *val;
+		switch_hash_this(hi, &key, NULL, &val);
+		blacklist_free((blacklist_t*)val);
+		switch_core_hash_delete(globals.lists, (const char*)key);
+	}
+	
+	if ((lists = switch_xml_child(cfg, "lists"))) {
+		for (list = switch_xml_child(lists, "list"); list; list = list->next) {
+			const char *name = switch_xml_attr_soft(list, "name");
+			const char *filename = switch_xml_attr_soft(list, "filename");
+			
+			if (name && filename) {
+				load_list(name, filename);
+			}
+		}
+	}
+	
+	switch_mutex_unlock(globals.lists_mutex);
+	
+	if (xml) {
+		switch_xml_free(xml);
+		xml = NULL;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_STANDARD_API(blacklist_api_function)
+{
+	char *data;
+	int argc;
+	char *argv[3];
+	
+	data = strdup(cmd);
+	trim(data);
+	if (!(argc = switch_separate_string(data, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid usage\n");
+		goto done;
+	}
+	
+	if (!strcasecmp(argv[0], "check")) {
+		blacklist_t *bl = NULL;
+		switch_bool_t result;
+		
+		if (argc < 2 || zstr(argv[1]) || zstr(argv[2])) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Wrong syntax");
+			goto done;
+		}
+		
+		switch_mutex_lock(globals.lists_mutex);
+		bl = switch_core_hash_find(globals.lists, argv[1]);
+		switch_mutex_unlock(globals.lists_mutex);
+		
+		if (!bl) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unknown blacklist [%s]\n", argv[1]);
+			stream->write_function(stream, "false");
+			goto done;
+		}
+		
+		switch_mutex_lock(bl->list_mutex);
+		result = (switch_bool_t)(intptr_t)switch_core_hash_find(bl->list, argv[2]);
+		stream->write_function(stream, "%s", result ? "true" : "false");
+		switch_mutex_unlock(bl->list_mutex);
+	} else if (!strcasecmp(argv[0], "add")) {
+		blacklist_t *bl = NULL;
+		if (argc < 2 || zstr(argv[1]) || zstr(argv[2])) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Wrong syntax");
+			goto done;
+		}
+		
+		switch_mutex_lock(globals.lists_mutex);
+		bl = switch_core_hash_find(globals.lists, argv[1]);
+		switch_mutex_unlock(globals.lists_mutex);
+		
+		if (!bl) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unknown blacklist [%s]\n", argv[1]);
+			stream->write_function(stream, "-ERR Unknown blacklist\n");
+			goto done;
+		}
+		
+		switch_mutex_lock(bl->list_mutex);
+		switch_core_hash_insert(bl->list, argv[2], (void*)SWITCH_TRUE);
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Added [%s] to list [%s]\n", argv[2], argv[1]);
+		switch_mutex_unlock(bl->list_mutex);
+		stream->write_function(stream, "+OK\n");
+	} else if (!strcasecmp(argv[0], "del")) {
+			blacklist_t *bl = NULL;
+		if (argc < 2 || zstr(argv[1]) || zstr(argv[2])) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Wrong syntax");
+			goto done;
+		}
+		
+		switch_mutex_lock(globals.lists_mutex);
+		bl = switch_core_hash_find(globals.lists, argv[1]);
+		switch_mutex_unlock(globals.lists_mutex);
+		
+		if (!bl) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unknown blacklist [%s]\n", argv[1]);
+			stream->write_function(stream, "-ERR Unknown blacklist\n");
+			goto done;
+		}
+		
+		switch_mutex_lock(bl->list_mutex);
+		switch_core_hash_insert(bl->list, argv[2], NULL);
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Removed [%s] from list [%s]\n", argv[2], argv[1]);
+		switch_mutex_unlock(bl->list_mutex);
+		stream->write_function(stream, "+OK\n");
+	} else if (!strcasecmp(argv[0], "reload"))  {
+		do_config(SWITCH_TRUE);
+		stream->write_function(stream, "+OK\n");
+	}
+	
+done:
+	switch_safe_free(data);
+	return SWITCH_STATUS_SUCCESS;
+}
+
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_blacklist_load)
+{
+	switch_api_interface_t *api_interface;
+	//switch_application_interface_t *app_interface;
+	/* connect my internal structure to the blank pointer passed to me */
+	*module_interface = switch_loadable_module_create_module_interface(pool, modname);
+	
+	memset(&globals, 0, sizeof(globals));
+	globals.pool = pool;
+
+	switch_core_hash_init(&globals.lists, globals.pool);
+	switch_mutex_init(&globals.lists_mutex, SWITCH_MUTEX_NESTED, globals.pool);
+
+	do_config(SWITCH_FALSE);
+
+	SWITCH_ADD_API(api_interface, "blacklist", "Control blacklists", blacklist_api_function, "");
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_blacklist_shutdown)
+{
+	return SWITCH_STATUS_SUCCESS;
+}
+
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4
+ */