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freeswitch/src/mod/event_handlers/mod_event_multicast/mod_event_multicast.c

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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, 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):
*
* Anthony Minessale II <anthm@freeswitch.org>
*
*
* mod_event_multicast.c -- Multicast Events
*
*/
#include <switch.h>
#ifdef HAVE_OPENSSL
#include <openssl/evp.h>
#endif
#define MULTICAST_BUFFSIZE 65536
/* magic byte sequence */
static unsigned char MAGIC[] = { 226, 132, 177, 197, 152, 198, 142, 211, 172, 197, 158, 208, 169, 208, 135, 197, 166, 207, 154, 196, 166 };
static char *MARKER = "1";
SWITCH_MODULE_LOAD_FUNCTION(mod_event_multicast_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_event_multicast_shutdown);
SWITCH_MODULE_RUNTIME_FUNCTION(mod_event_multicast_runtime);
SWITCH_MODULE_DEFINITION(mod_event_multicast, mod_event_multicast_load, mod_event_multicast_shutdown, mod_event_multicast_runtime);
static switch_memory_pool_t *module_pool = NULL;
static struct {
char *address;
char *bindings;
uint32_t key_count;
switch_port_t port;
switch_sockaddr_t *addr;
switch_socket_t *udp_socket;
switch_hash_t *event_hash;
uint8_t event_list[SWITCH_EVENT_ALL + 1];
int running;
uint8_t ttl;
char *psk;
switch_mutex_t *mutex;
switch_hash_t *peer_hash;
int loopback;
} globals;
struct peer_status {
switch_bool_t active;
time_t lastseen;
};
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_address, globals.address);
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_bindings, globals.bindings);
#ifdef HAVE_OPENSSL
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_psk, globals.psk);
#endif
#define MULTICAST_EVENT "multicast::event"
#define MULTICAST_PEERUP "multicast::peerup"
#define MULTICAST_PEERDOWN "multicast::peerdown"
static switch_status_t load_config(void)
{
switch_status_t status = SWITCH_STATUS_SUCCESS;
char *cf = "event_multicast.conf";
switch_xml_t cfg, xml, settings, param;
char *next, *cur;
uint32_t count = 0;
uint8_t custom = 0;
globals.ttl = 1;
globals.key_count = 0;
globals.loopback = 0;
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, "address")) {
set_global_address(val);
} else if (!strcasecmp(var, "bindings")) {
set_global_bindings(val);
} else if (!strcasecmp(var, "port")) {
globals.port = (switch_port_t) atoi(val);
} else if (!strcasecmp(var, "psk")) {
#ifdef HAVE_OPENSSL
set_global_psk(val);
#else
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Cannot use pre shared key encryption without OpenSSL support\n");
#endif
} else if (!strcasecmp(var, "ttl")) {
int ttl = atoi(val);
if ((ttl && ttl <= 255) || !strcmp(val, "0")) {
globals.ttl = (uint8_t) ttl;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Invalid ttl '%s' specified, using default of 1\n", val);
}
} else if (!strcasecmp(var, "loopback")) {
globals.loopback = switch_true(val);
}
}
}
switch_xml_free(xml);
if (globals.bindings) {
for (cur = globals.bindings; cur; count++) {
switch_event_types_t type;
if ((next = strchr(cur, ' '))) {
*next++ = '\0';
}
if (custom) {
switch_core_hash_insert(globals.event_hash, cur, MARKER);
} else if (switch_name_event(cur, &type) == SWITCH_STATUS_SUCCESS) {
globals.key_count++;
if (type == SWITCH_EVENT_ALL) {
uint32_t x = 0;
for (x = 0; x < SWITCH_EVENT_ALL; x++) {
globals.event_list[x] = 0;
}
}
if (type <= SWITCH_EVENT_ALL) {
globals.event_list[type] = 1;
}
if (type == SWITCH_EVENT_CUSTOM) {
custom++;
}
}
cur = next;
}
}
if (!globals.key_count) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "No Bindings\n");
}
return status;
}
static void event_handler(switch_event_t *event)
{
uint8_t send = 0;
if (globals.running != 1) {
return;
}
if (event->subclass_name && (!strcmp(event->subclass_name, MULTICAST_EVENT) ||
!strcmp(event->subclass_name, MULTICAST_PEERUP) || !strcmp(event->subclass_name, MULTICAST_PEERDOWN))) {
char *event_name, *sender;
if ((event_name = switch_event_get_header(event, "orig-event-name")) &&
!strcasecmp(event_name, "HEARTBEAT") && (sender = switch_event_get_header(event, "orig-multicast-sender"))) {
struct peer_status *p;
time_t now = switch_epoch_time_now(NULL);
if (!(p = switch_core_hash_find(globals.peer_hash, sender))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Host %s not already in hash\n", sender);
p = switch_core_alloc(module_pool, sizeof(struct peer_status));
p->active = SWITCH_FALSE;
p->lastseen = 0;
/*} else { */
/*switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Host %s last seen %d seconds ago\n", sender, now - p->lastseen); */
}
if (!p->active) {
switch_event_t *local_event;
if (switch_event_create_subclass(&local_event, SWITCH_EVENT_CUSTOM, MULTICAST_PEERUP) == SWITCH_STATUS_SUCCESS) {
char lastseen[21];
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Peer", sender);
if (p->lastseen) {
switch_snprintf(lastseen, sizeof(lastseen), "%d", (int) p->lastseen);
} else {
switch_snprintf(lastseen, sizeof(lastseen), "%s", "Never");
}
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Lastseen", lastseen);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Peer %s has come up; last seen: %s\n", sender, lastseen);
switch_event_fire(&local_event);
}
}
p->active = SWITCH_TRUE;
p->lastseen = now;
switch_core_hash_insert(globals.peer_hash, sender, p);
}
/* ignore our own events to avoid ping pong */
return;
}
if (event->event_id == SWITCH_EVENT_RELOADXML) {
switch_mutex_lock(globals.mutex);
switch_core_hash_destroy(&globals.event_hash);
globals.event_hash = NULL;
if (globals.psk) {
switch_safe_free(globals.psk);
globals.psk = NULL;
}
switch_core_hash_init(&globals.event_hash);
memset(globals.event_list, 0, SWITCH_EVENT_ALL + 1);
if (load_config() != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to reload config file\n");
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Event Multicast Reloaded\n");
}
switch_mutex_unlock(globals.mutex);
}
if (event->event_id == SWITCH_EVENT_HEARTBEAT) {
switch_hash_index_t *cur;
switch_ssize_t keylen;
const void *key;
void *value;
time_t now = switch_epoch_time_now(NULL);
struct peer_status *last;
char *host;
for (cur = switch_core_hash_first(globals.peer_hash); cur; cur = switch_core_hash_next(&cur)) {
switch_core_hash_this(cur, &key, &keylen, &value);
host = (char *) key;
last = (struct peer_status *) value;
if (last->active && (now - (last->lastseen)) > 60) {
switch_event_t *local_event;
last->active = SWITCH_FALSE;
if (switch_event_create_subclass(&local_event, SWITCH_EVENT_CUSTOM, MULTICAST_PEERDOWN) == SWITCH_STATUS_SUCCESS) {
char lastseen[21];
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Peer", host);
switch_snprintf(lastseen, sizeof(lastseen), "%d", (int) last->lastseen);
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Lastseen", lastseen);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Peer %s has gone down; last seen: %s\n", host, lastseen);
switch_event_fire(&local_event);
}
}
}
}
switch_mutex_lock(globals.mutex);
if (globals.event_list[(uint8_t) SWITCH_EVENT_ALL]) {
send = 1;
} else if ((globals.event_list[(uint8_t) event->event_id])) {
if (event->event_id != SWITCH_EVENT_CUSTOM || (event->subclass_name && switch_core_hash_find(globals.event_hash, event->subclass_name))) {
send = 1;
}
}
switch_mutex_unlock(globals.mutex);
if (send) {
char *packet;
switch (event->event_id) {
case SWITCH_EVENT_LOG:
return;
default:
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Multicast-Sender", switch_core_get_switchname());
if (switch_event_serialize(event, &packet, SWITCH_TRUE) == SWITCH_STATUS_SUCCESS) {
size_t len;
char *buf;
#ifdef HAVE_OPENSSL
int outlen, tmplen;
#if OPENSSL_VERSION_NUMBER >= 0x10100000
EVP_CIPHER_CTX *ctx;
#else
EVP_CIPHER_CTX ctx;
#endif
char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
switch_uuid_t uuid;
switch_uuid_get(&uuid);
switch_uuid_format(uuid_str, &uuid);
len = strlen(packet) + SWITCH_UUID_FORMATTED_LENGTH + EVP_MAX_IV_LENGTH + strlen((char *) MAGIC);
#else
len = strlen(packet) + strlen((char *) MAGIC);
#endif
buf = malloc(len + 1);
memset(buf, 0, len + 1);
switch_assert(buf);
#ifdef HAVE_OPENSSL
if (globals.psk) {
switch_copy_string(buf, uuid_str, SWITCH_UUID_FORMATTED_LENGTH);
#if OPENSSL_VERSION_NUMBER >= 0x10100000
ctx = EVP_CIPHER_CTX_new();
EVP_EncryptInit(ctx, EVP_bf_cbc(), NULL, NULL);
EVP_CIPHER_CTX_set_key_length(ctx, strlen(globals.psk));
EVP_EncryptInit(ctx, NULL, (unsigned char *) globals.psk, (unsigned char *) uuid_str);
EVP_EncryptUpdate(ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH,
&outlen, (unsigned char *) packet, (int) strlen(packet));
EVP_EncryptUpdate(ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH + outlen,
&tmplen, (unsigned char *) MAGIC, (int) strlen((char *) MAGIC));
outlen += tmplen;
EVP_EncryptFinal(ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH + outlen, &tmplen);
EVP_CIPHER_CTX_free(ctx);
#else
EVP_CIPHER_CTX_init(&ctx);
EVP_EncryptInit(&ctx, EVP_bf_cbc(), NULL, NULL);
EVP_CIPHER_CTX_set_key_length(&ctx, strlen(globals.psk));
EVP_EncryptInit(&ctx, NULL, (unsigned char *) globals.psk, (unsigned char *) uuid_str);
EVP_EncryptUpdate(&ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH,
&outlen, (unsigned char *) packet, (int) strlen(packet));
EVP_EncryptUpdate(&ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH + outlen,
&tmplen, (unsigned char *) MAGIC, (int) strlen((char *) MAGIC));
outlen += tmplen;
EVP_EncryptFinal(&ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH + outlen, &tmplen);
EVP_CIPHER_CTX_cleanup(&ctx);
#endif
outlen += tmplen;
len = (size_t) outlen + SWITCH_UUID_FORMATTED_LENGTH;
*(buf + SWITCH_UUID_FORMATTED_LENGTH + outlen) = '\0';
} else {
#endif
switch_copy_string(buf, packet, len);
switch_copy_string(buf + strlen(packet), (char *) MAGIC, strlen((char *) MAGIC) + 1);
#ifdef HAVE_OPENSSL
}
#endif
switch_socket_sendto(globals.udp_socket, globals.addr, 0, buf, &len);
switch_safe_free(packet);
switch_safe_free(buf);
}
break;
}
}
return;
}
SWITCH_STANDARD_API(multicast_peers)
{
switch_hash_index_t *cur;
switch_ssize_t keylen;
const void *key;
void *value;
time_t now = switch_epoch_time_now(NULL);
struct peer_status *last;
char *host;
int i = 0;
for (cur = switch_core_hash_first(globals.peer_hash); cur; cur = switch_core_hash_next(&cur)) {
switch_core_hash_this(cur, &key, &keylen, &value);
host = (char *) key;
last = (struct peer_status *) value;
stream->write_function(stream, "Peer %s %s; last seen %d seconds ago\n", host, last->active ? "UP" : "DOWN", now - last->lastseen);
i++;
}
if (i == 0) {
stream->write_function(stream, "No multicast peers seen\n");
}
return SWITCH_STATUS_SUCCESS;
}
SWITCH_MODULE_LOAD_FUNCTION(mod_event_multicast_load)
{
switch_api_interface_t *api_interface;
switch_status_t status = SWITCH_STATUS_GENERR;
memset(&globals, 0, sizeof(globals));
switch_mutex_init(&globals.mutex, SWITCH_MUTEX_NESTED, pool);
module_pool = pool;
switch_core_hash_init(&globals.event_hash);
switch_core_hash_init(&globals.peer_hash);
globals.key_count = 0;
if (load_config() != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Cannot Configure\n");
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_sockaddr_info_get(&globals.addr, globals.address, SWITCH_UNSPEC, globals.port, 0, module_pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Cannot find address\n");
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_socket_create(&globals.udp_socket, AF_INET, SOCK_DGRAM, 0, module_pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Socket Error\n");
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_socket_opt_set(globals.udp_socket, SWITCH_SO_REUSEADDR, 1) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Socket Option Error\n");
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_mcast_join(globals.udp_socket, globals.addr, NULL, NULL) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Multicast Error\n");
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_mcast_hops(globals.udp_socket, globals.ttl) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to set ttl to '%d'\n", globals.ttl);
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_mcast_loopback(globals.udp_socket, (uint8_t)globals.loopback) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to set loopback to '%d'\n", globals.loopback);
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_socket_bind(globals.udp_socket, globals.addr) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Bind Error\n");
switch_goto_status(SWITCH_STATUS_TERM, fail);
}
if (switch_event_reserve_subclass(MULTICAST_EVENT) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't register subclass %s!\n", MULTICAST_EVENT);
switch_goto_status(SWITCH_STATUS_GENERR, fail);
}
if (switch_event_reserve_subclass(MULTICAST_PEERUP) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't register subclass %s!\n", MULTICAST_PEERUP);
switch_goto_status(SWITCH_STATUS_GENERR, fail);
}
if (switch_event_reserve_subclass(MULTICAST_PEERDOWN) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't register subclass %s!\n", MULTICAST_PEERDOWN);
switch_goto_status(SWITCH_STATUS_GENERR, fail);
}
if (switch_event_bind(modname, SWITCH_EVENT_ALL, SWITCH_EVENT_SUBCLASS_ANY, event_handler, NULL) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't bind!\n");
switch_goto_status(SWITCH_STATUS_GENERR, fail);
}
#ifdef USE_NONBLOCK
switch_socket_opt_set(globals.udp_socket, SWITCH_SO_NONBLOCK, TRUE);
#endif
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_API(api_interface, "multicast_peers", "Show status of multicast peers", multicast_peers, "");
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
fail:
if (globals.udp_socket) {
switch_socket_close(globals.udp_socket);
}
switch_event_free_subclass(MULTICAST_EVENT);
switch_event_free_subclass(MULTICAST_PEERUP);
switch_event_free_subclass(MULTICAST_PEERDOWN);
return status;
}
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_event_multicast_shutdown)
{
globals.running = 0;
switch_event_unbind_callback(event_handler);
switch_mutex_lock(globals.mutex);
if (globals.udp_socket) {
switch_socket_shutdown(globals.udp_socket, 2);
}
switch_event_free_subclass(MULTICAST_EVENT);
switch_event_free_subclass(MULTICAST_PEERUP);
switch_event_free_subclass(MULTICAST_PEERDOWN);
if (globals.event_hash) {
switch_core_hash_destroy(&globals.event_hash);
}
if (globals.peer_hash) {
switch_core_hash_destroy(&globals.peer_hash);
}
switch_safe_free(globals.address);
switch_safe_free(globals.bindings);
switch_mutex_unlock(globals.mutex);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_MODULE_RUNTIME_FUNCTION(mod_event_multicast_runtime)
{
switch_event_t *local_event;
char *buf, *m;
switch_sockaddr_t *addr;
buf = (char *) malloc(MULTICAST_BUFFSIZE);
switch_assert(buf);
switch_sockaddr_info_get(&addr, NULL, SWITCH_UNSPEC, 0, 0, module_pool);
globals.running = 1;
while (globals.running == 1) {
char *myaddr;
size_t len = MULTICAST_BUFFSIZE - 1;
char *packet;
switch_status_t status;
memset(buf, 0, len + 1);
switch_sockaddr_ip_get(&myaddr, globals.addr);
if ((status = switch_socket_recvfrom(addr, globals.udp_socket, 0, buf, &len)) != SWITCH_STATUS_SUCCESS || !len || !globals.running) {
break;
}
#ifdef USE_NONBLOCK
if (!len) {
if (SWITCH_STATUS_IS_BREAK(status)) {
switch_yield(100000);
continue;
}
break;
}
#endif
packet = buf;
#ifdef HAVE_OPENSSL
if (globals.psk) {
char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
char *tmp;
int outl, tmplen;
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
EVP_CIPHER_CTX *ctx;
#else
EVP_CIPHER_CTX ctx;
#endif
len -= SWITCH_UUID_FORMATTED_LENGTH;
tmp = malloc(len);
memset(tmp, 0, len);
switch_copy_string(uuid_str, packet, SWITCH_UUID_FORMATTED_LENGTH);
packet += SWITCH_UUID_FORMATTED_LENGTH;
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
ctx = EVP_CIPHER_CTX_new();
EVP_DecryptInit(ctx, EVP_bf_cbc(), NULL, NULL);
EVP_CIPHER_CTX_set_key_length(ctx, strlen(globals.psk));
EVP_DecryptInit(ctx, NULL, (unsigned char *) globals.psk, (unsigned char *) uuid_str);
EVP_DecryptUpdate(ctx, (unsigned char *) tmp, &outl, (unsigned char *) packet, (int) len);
EVP_DecryptFinal(ctx, (unsigned char *) tmp + outl, &tmplen);
EVP_CIPHER_CTX_free(ctx);
#else
EVP_CIPHER_CTX_init(&ctx);
EVP_DecryptInit(&ctx, EVP_bf_cbc(), NULL, NULL);
EVP_CIPHER_CTX_set_key_length(&ctx, strlen(globals.psk));
EVP_DecryptInit(&ctx, NULL, (unsigned char *) globals.psk, (unsigned char *) uuid_str);
EVP_DecryptUpdate(&ctx, (unsigned char *) tmp, &outl, (unsigned char *) packet, (int) len);
EVP_DecryptFinal(&ctx, (unsigned char *) tmp + outl, &tmplen);
EVP_CIPHER_CTX_cleanup(&ctx);
#endif
*(tmp + outl + tmplen) = '\0';
/*switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "decrypted event as %s\n----------\n of actual length %d (%d) %d\n", tmp, outl + tmplen, (int) len, (int) strlen(tmp)); */
packet = tmp;
}
#endif
if ((m = strchr(packet, (int) MAGIC[0])) != 0) {
/*switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Found start of magic string\n"); */
if (!strncmp((char *) MAGIC, m, strlen((char *) MAGIC))) {
/*switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Found entire magic string\n"); */
*m = '\0';
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Failed to find entire magic string\n");
continue;
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to find start of magic string\n");
continue;
}
/*switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "\nEVENT %d\n--------------------------------\n%s\n", (int) len, packet); */
if (switch_event_create_subclass(&local_event, SWITCH_EVENT_CUSTOM, MULTICAST_EVENT) == SWITCH_STATUS_SUCCESS) {
char *var, *val, *term = NULL, tmpname[128];
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Multicast", "yes");
var = packet;
while (var && *var) {
if ((val = strchr(var, ':')) != 0) {
*val++ = '\0';
while (*val == ' ') {
val++;
}
if ((term = strchr(val, '\r')) != 0 || (term = strchr(val, '\n')) != 0) {
*term = '\0';
while (*term == '\r' || *term == '\n') {
term++;
}
}
switch_url_decode(val);
switch_snprintf(tmpname, sizeof(tmpname), "Orig-%s", var);
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, tmpname, val);
var = term + 1;
} else {
break;
}
}
if (var && strlen(var) > 1) {
switch_event_add_body(local_event, "%s", var);
}
switch_event_fire(&local_event);
}
}
if (globals.udp_socket) {
switch_socket_close(globals.udp_socket);
globals.udp_socket = NULL;
}
globals.running = 0;
free(buf);
return SWITCH_STATUS_TERM;
}
/* 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 noet:
*/
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