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add limit_execute (like limit_hash_execute) 

allow -#s to act as counter only
add INFO level logs to limit similar to limit_hash


git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@14870 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Rupa Schomaker 2009-09-15 18:13:25 +00:00
parent 7d3ded0818
commit e4258a83a9
1 changed files with 147 additions and 46 deletions
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193
src/mod/applications/mod_limit/mod_limit.c
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@ -790,59 +790,27 @@ SWITCH_STANDARD_APP(group_function)
}
}
#define LIMIT_USAGE "<realm> <id> [<max> [number [dialplan [context]]]]"
#define LIMIT_DESC "limit access to a resource and transfer to an extension if the limit is exceeded"
static char *limit_def_xfer_exten = "limit_exceeded";
SWITCH_STANDARD_APP(limit_function)
/* \brief Enforces limit restrictions
* \param session current session
* \param realm limit realm
* \param id limit id
* \param max maximum count
* \return SWITCH_TRUE if the access is allowed, SWITCH_FALSE if it isnt
*/
static switch_bool_t do_limit(switch_core_session_t *session, const char *realm, const char *id, int max)
{
int argc = 0;
char *argv[6] = { 0 };
char *mydata = NULL;
switch_channel_t *channel = switch_core_session_get_channel(session);
int got = 0;
char *sql = NULL;
char *realm = NULL;
char *id = NULL;
char *xfer_exten = NULL;
int max = 0, got = 0;
char buf[80] = "";
callback_t cbt = { 0 };
switch_channel_t *channel = switch_core_session_get_channel(session);
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_SESSION_LOG(session), SWITCH_LOG_WARNING, "USAGE: limit %s\n", LIMIT_USAGE);
return;
}
switch_status_t status = SWITCH_TRUE;
switch_mutex_lock(globals.mutex);
realm = argv[0];
id = argv[1];
if (argc > 2) {
max = atoi(argv[2]);
if (max < 0) {
max = 0;
}
}
else {
max = -1;
}
if (argc >= 4) {
xfer_exten = argv[3];
} else {
xfer_exten = limit_def_xfer_exten;
}
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]);
switch_channel_set_variable(channel, "limit_max", switch_core_session_sprintf(session, "%d", max));
cbt.buf = buf;
cbt.len = sizeof(buf);
@ -851,12 +819,17 @@ SWITCH_STANDARD_APP(limit_function)
switch_safe_free(sql);
got = atoi(buf);
if (max < 0) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "Usage for %s_%s is now %d\n", realm, id, got+1);
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "Usage for %s_%s is now %d/%d\n", realm, id, got+1, max);
}
if (max >= 0 && got + 1 > max) {
switch_ivr_session_transfer(session, xfer_exten, argv[4], argv[5]);
status = SWITCH_FALSE;
goto done;
}
switch_core_event_hook_add_state_change(session, db_state_handler);
switch_core_event_hook_add_state_change(session, db_state_handler);
sql =
@ -875,8 +848,135 @@ SWITCH_STANDARD_APP(limit_function)
done:
switch_mutex_unlock(globals.mutex);
return status;
}
#define LIMIT_USAGE "<realm> <id> [<max> [number [dialplan [context]]]]"
#define LIMIT_DESC "limit access to a resource and transfer to an extension if the limit is exceeded"
static char *limit_def_xfer_exten = "limit_exceeded";
SWITCH_STANDARD_APP(limit_function)
{
int argc = 0;
char *argv[6] = { 0 };
char *mydata = NULL;
char *realm = NULL;
char *id = NULL;
char *xfer_exten = NULL;
int max = 0;
switch_channel_t *channel = switch_core_session_get_channel(session);
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_SESSION_LOG(session), SWITCH_LOG_WARNING, "USAGE: limit %s\n", LIMIT_USAGE);
return;
}
realm = argv[0];
id = argv[1];
/* Accept '-' as unlimited (act as counter)*/
if (argv[2][0] == '-') {
max = -1;
} else {
max = atoi(argv[2]);
if (max < 0) {
max = 0;
}
}
if (argc >= 4) {
xfer_exten = argv[3];
} else {
xfer_exten = limit_def_xfer_exten;
}
if (!do_limit(session, realm, id, max)) {
/* Limit exceeded */
if (*xfer_exten == '!') {
switch_channel_hangup(channel, switch_channel_str2cause(xfer_exten+1));
} else {
switch_ivr_session_transfer(session, xfer_exten, argv[4], argv[5]);
}
}
}
/* !\brief Releases usage of a limit_-controlled ressource */
static void limit_release(switch_core_session_t *session, const char *realm, const char *id)
{
char *sql = NULL;
char buf[80] = "";
callback_t cbt = { 0 };
switch_mutex_lock(globals.mutex);
cbt.buf = buf;
cbt.len = sizeof(buf);
sql = switch_mprintf("delete from limit_data where uuid='%q' and realm='%q' and id like '%q'",
switch_core_session_get_uuid(session), realm, id);
limit_execute_sql_callback(NULL, sql, sql2str_callback, &cbt);
switch_safe_free(sql);
switch_mutex_unlock(globals.mutex);
}
#define LIMITEXECUTE_USAGE "<realm> <id> [<max>] [application] [application arguments]"
#define LIMITEXECUTE_DESC "limit access to a resource. the specified application will only be executed if the resource is available"
SWITCH_STANDARD_APP(limit_execute_function)
{
int argc = 0;
char *argv[5] = { 0 };
char *mydata = NULL;
char *realm = NULL;
char *id = NULL;
char *app = NULL;
char *app_arg = NULL;
int max = -1;
/* Parse application data */
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 < 2) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "USAGE: limit_execute %s\n", LIMITEXECUTE_USAGE);
return;
}
realm = argv[0];
id = argv[1];
/* Accept '-' as unlimited (act as counter)*/
if (argv[2][0] == '-') {
max = -1;
} else {
max = atoi(argv[2]);
if (max < 0) {
max = 0;
}
}
app = argv[3];
app_arg = argv[4];
if (switch_strlen_zero(app)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Missing application\n");
return;
}
if (do_limit(session, realm, id, max)) {
switch_core_session_execute_application(session, app, app_arg);
limit_release(session, realm, id);
}
}
#define LIMIT_USAGE_USAGE "<realm> <id>"
SWITCH_STANDARD_API(limit_usage_function)
@ -1591,6 +1691,7 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_limit_load)
SWITCH_ADD_APP(app_interface, "limit", "Limit", LIMIT_DESC, limit_function, LIMIT_USAGE, SAF_SUPPORT_NOMEDIA);
SWITCH_ADD_APP(app_interface, "limit_execute", "Limit", LIMITEXECUTE_USAGE, limit_execute_function, LIMITEXECUTE_USAGE, SAF_SUPPORT_NOMEDIA);
SWITCH_ADD_APP(app_interface, "limit_hash", "Limit (hash)", LIMITHASH_DESC, limit_hash_function, LIMITHASH_USAGE, SAF_SUPPORT_NOMEDIA);
SWITCH_ADD_APP(app_interface, "limit_hash_execute", "Limit (hash)", LIMITHASHEXECUTE_USAGE, limit_hash_execute_function, LIMITHASHEXECUTE_USAGE, SAF_SUPPORT_NOMEDIA);
SWITCH_ADD_APP(app_interface, "limit_memcache", "Limit (memcache)", LIMITMEMCACHE_DESC, limit_memcache_function, LIMITMEMCACHE_USAGE, SAF_SUPPORT_NOMEDIA);