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add mod_limit

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6135 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2007-11-01 19:05:48 +00:00
parent aa36c7a588
commit ae31d229e0
5 changed files with 397 additions and 0 deletions
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1
build/modules.conf.in
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@ -6,6 +6,7 @@ applications/mod_dptools
applications/mod_enum applications/mod_enum
applications/mod_fifo applications/mod_fifo
applications/mod_voicemail applications/mod_voicemail
applications/mod_limit
#applications/mod_ivrtest #applications/mod_ivrtest
#applications/mod_soundtouch #applications/mod_soundtouch
#applications/mod_rss #applications/mod_rss

1
conf/freeswitch.xml
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@ -62,6 +62,7 @@
<!-- ivr.conf is used by mod_dptools --> <!-- ivr.conf is used by mod_dptools -->
<!--#include "ivr.conf.xml"--> <!--#include "ivr.conf.xml"-->
<!--#include "voicemail.conf.xml"--> <!--#include "voicemail.conf.xml"-->
<!--#include "limit.conf.xml"-->
<!-- Dialplan Interfaces --> <!-- Dialplan Interfaces -->
<!--#include "dialplan_directory.conf.xml"--> <!--#include "dialplan_directory.conf.xml"-->

1
conf/modules.conf.xml
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@ -38,6 +38,7 @@
<load module="mod_dptools"/> <load module="mod_dptools"/>
<load module="mod_fifo"/> <load module="mod_fifo"/>
<load module="mod_voicemail"/> <load module="mod_voicemail"/>
<load module="mod_limit"/>
<!-- Dialplan Interfaces --> <!-- Dialplan Interfaces -->
<!-- <load module="mod_dialplan_directory"/> --> <!-- <load module="mod_dialplan_directory"/> -->

3
src/mod/applications/mod_limit/Makefile Normal file
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@ -0,0 +1,3 @@
BASE=../../../..
include $(BASE)/build/modmake.rules
LOCAL_CFLAGS += `if test -f $(BASE)/.libs/libfreeswitch_la-switch_odbc.o ; then echo -DSWITCH_HAVE_ODBC; fi ;`

391
src/mod/applications/mod_limit/mod_limit.c Normal file
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@ -0,0 +1,391 @@
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
*
* 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 <anthmct@yahoo.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthmct@yahoo.com>
* Neal Horman <neal at wanlink dot com>
*
*
* mod_limit.c -- Framework Demo Module
*
*/
#include <switch.h>
#ifdef SWITCH_HAVE_ODBC
#include <switch_odbc.h>
#endif
SWITCH_MODULE_LOAD_FUNCTION(mod_limit_load);
SWITCH_MODULE_DEFINITION(mod_limit, mod_limit_load, NULL, NULL);
static struct {
switch_memory_pool_t *pool;
char hostname[256];
char *dbname;
char *odbc_dsn;
switch_mutex_t *mutex;
#ifdef SWITCH_HAVE_ODBC
switch_odbc_handle_t *master_odbc;
#else
void *filler1;
#endif
} globals;
static char limit_sql[] =
"CREATE TABLE limit_data (\n"
" hostname VARCHAR(255),\n"
" realm VARCHAR(255),\n"
" id VARCHAR(255),\n"
" uuid VARCHAR(255)\n"
");\n";
static switch_status_t limit_execute_sql(char *sql, switch_mutex_t *mutex)
{
switch_core_db_t *db;
switch_status_t status = SWITCH_STATUS_SUCCESS;
if (mutex) {
switch_mutex_lock(mutex);
}
#ifdef SWITCH_HAVE_ODBC
if (globals.odbc_dsn) {
SQLHSTMT stmt;
if (switch_odbc_handle_exec(globals.master_odbc, sql, &stmt) != SWITCH_ODBC_SUCCESS) {
char *err_str;
err_str = switch_odbc_handle_get_error(globals.master_odbc, stmt);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "ERR: [%s]\n[%s]\n", sql, switch_str_nil(err_str));
switch_safe_free(err_str);
status = SWITCH_STATUS_FALSE;
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
} else {
#endif
if (!(db = switch_core_db_open_file(globals.dbname))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error Opening DB %s\n", globals.dbname);
status = SWITCH_STATUS_FALSE;
goto end;
}
status = switch_core_db_persistant_execute(db, sql, 25);
switch_core_db_close(db);
#ifdef SWITCH_HAVE_ODBC
}
#endif
end:
if (mutex) {
switch_mutex_unlock(mutex);
}
return status;
}
static switch_bool_t limit_execute_sql_callback(switch_mutex_t *mutex,
char *sql,
switch_core_db_callback_func_t callback,
void *pdata)
{
switch_bool_t ret = SWITCH_FALSE;
switch_core_db_t *db;
char *errmsg = NULL;
if (mutex) {
switch_mutex_lock(mutex);
}
#ifdef SWITCH_HAVE_ODBC
if (globals.odbc_dsn) {
switch_odbc_handle_callback_exec(globals.master_odbc, sql, callback, pdata);
} else {
#endif
if (!(db = switch_core_db_open_file(globals.dbname))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error Opening DB %s\n", globals.dbname);
goto end;
}
switch_core_db_exec(db, sql, callback, pdata, &errmsg);
if (errmsg) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "SQL ERR: [%s] %s\n", sql, errmsg);
free(errmsg);
}
if (db) {
switch_core_db_close(db);
}
#ifdef SWITCH_HAVE_ODBC
}
#endif
end:
if (mutex) {
switch_mutex_unlock(mutex);
}
return ret;
}
static switch_status_t do_config()
{
char *cf = "limit.conf";
switch_xml_t cfg, xml, settings, param;
switch_core_db_t *db;
switch_status_t status = SWITCH_STATUS_SUCCESS;
char *odbc_user = NULL;
char *odbc_pass = NULL;
if (!(xml = switch_xml_open_cfg(cf, &cfg, NULL))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "open of %s failed\n", cf);
return SWITCH_STATUS_TERM;
}
if ((settings = switch_xml_child(cfg, "settings"))) {
for (param = switch_xml_child(settings, "param"); param; param = param->next) {
char *var = (char *) switch_xml_attr_soft(param, "name");
char *val = (char *) switch_xml_attr_soft(param, "value");
if (!strcasecmp(var, "debug")) {
} else if (!strcasecmp(var, "odbc-dsn")) {
#ifdef SWITCH_HAVE_ODBC
globals.odbc_dsn = switch_core_strdup(globals.pool, val);
if ((odbc_user = strchr(globals.odbc_dsn, ':'))) {
*odbc_user++ = '\0';
}
if ((odbc_pass = strchr(odbc_user, ':'))) {
*odbc_pass++ = '\0';
}
#else
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "ODBC IS NOT AVAILABLE!\n");
#endif
}
}
}
if (switch_strlen_zero(globals.odbc_dsn) || switch_strlen_zero(odbc_user) || switch_strlen_zero(odbc_pass)) {
globals.dbname = "call_limit";
}
#ifdef SWITCH_HAVE_ODBC
if (globals.odbc_dsn) {
if (!(globals.master_odbc = switch_odbc_handle_new(globals.odbc_dsn, odbc_user, odbc_pass))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Cannot Open ODBC Database!\n");
status = SWITCH_STATUS_FALSE;
goto done;
}
if (switch_odbc_handle_connect(globals.master_odbc) != SWITCH_ODBC_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Cannot Open ODBC Database!\n");
status = SWITCH_STATUS_FALSE;
goto done;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Connected ODBC DSN: %s\n", globals.odbc_dsn);
switch_odbc_handle_exec(globals.master_odbc, limit_sql, NULL);
} else {
#endif
if ((db = switch_core_db_open_file(globals.dbname))) {
switch_core_db_test_reactive(db, "select * from limit_data", NULL, limit_sql);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Cannot Open SQL Database!\n");
status = SWITCH_STATUS_FALSE;
goto done;
}
switch_core_db_close(db);
#ifdef SWITCH_HAVE_ODBC
}
#endif
done:
return status;
}
static switch_status_t hanguphook(switch_core_session_t *session)
{
switch_channel_t *channel;
switch_channel_state_t state;
const char *realm = NULL;
const char *id = NULL;
char *sql = NULL;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
state = switch_channel_get_state(channel);
if (state == CS_HANGUP || state == CS_RING) {
id = switch_channel_get_variable(channel, "limit_id");
realm = switch_channel_get_variable(channel, "limit_realm");
sql = switch_mprintf("delete from limit_data where uuid='%q' and hostname='%q' and realm='%q'and id='%q';",
switch_core_session_get_uuid(session), globals.hostname, realm, id);
printf("wtf [%s]\n", sql);
limit_execute_sql(sql, globals.mutex);
switch_safe_free(sql);
switch_core_event_hook_remove_state_change(session, hanguphook);
}
return SWITCH_STATUS_SUCCESS;
}
struct callback {
char *buf;
size_t len;
int matches;
};
typedef struct callback callback_t;
static int sql2str_callback(void *pArg, int argc, char **argv, char **columnNames)
{
callback_t *cbt = (callback_t *) pArg;
switch_copy_string(cbt->buf, argv[0], cbt->len);
cbt->matches++;
return 0;
}
#define LIMIT_USAGE "<realm> <id> <max>"
#define LIMIT_DESC "limit access to an extension"
SWITCH_STANDARD_APP(limit_function)
{
int argc = 0;
char *argv[6] = { 0 };
char *mydata = NULL;
char *sql = NULL;
char *realm = NULL;
char *id = NULL;
int max = 0, got = 0;
char buf[80] = "";
callback_t cbt = { 0 };
switch_channel_t *channel;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
if (!switch_strlen_zero(data)) {
mydata = switch_core_session_strdup(session, data);
argc = switch_separate_string(mydata, ' ', argv, (sizeof(argv) / sizeof(argv[0])));
}
if (argc < 3) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "USAGE: limit %s\n", LIMIT_USAGE);
return;
}
switch_mutex_lock(globals.mutex);
realm = argv[0];
id = argv[1];
max = atoi(argv[2]);
if (max < 0) {
max = 0;
}
switch_channel_set_variable(channel, "limit_realm", realm);
switch_channel_set_variable(channel, "limit_id", id);
switch_channel_set_variable(channel, "limit_max", argv[2]);
cbt.buf = buf;
cbt.len = sizeof(buf);
sql = switch_mprintf("select count(hostname) from limit_data where realm='%q' and id='%q'", realm, id);
limit_execute_sql_callback(NULL, sql, sql2str_callback, &cbt);
got = atoi(buf);
if (got + 1 > max) {
switch_ivr_session_transfer(session, "limit_exceeded", NULL, NULL);
goto done;
}
switch_core_event_hook_add_state_change(session, hanguphook);
sql = switch_mprintf("insert into limit_data values('%q','%q','%q','%q');", globals.hostname, realm, id, switch_core_session_get_uuid(session));
limit_execute_sql(sql, NULL);
switch_safe_free(sql);
done:
switch_mutex_unlock(globals.mutex);
}
SWITCH_MODULE_LOAD_FUNCTION(mod_limit_load)
{
switch_status_t status;
switch_application_interface_t *app_interface;
memset(&globals, 0, sizeof(&globals));
gethostname(globals.hostname, sizeof(globals.hostname));
globals.pool = pool;
if ((status = do_config() != SWITCH_STATUS_SUCCESS)) {
return status;
}
switch_mutex_init(&globals.mutex, SWITCH_MUTEX_NESTED, globals.pool);
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_APP(app_interface, "limit", "Limit", LIMIT_DESC, limit_function, LIMIT_USAGE, SAF_NONE);
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:nil
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 expandtab:
*/