Author: andrew Date: Wed Jun 17 23:20:45 2009 New Revision: 13828 Log: Initial decryption support Modified: freeswitch/trunk/src/mod/event_handlers/mod_event_multicast/mod_event_multicast.c Modified: freeswitch/trunk/src/mod/event_handlers/mod_event_multicast/mod_event_multicast.c ============================================================================== --- freeswitch/trunk/src/mod/event_handlers/mod_event_multicast/mod_event_multicast.c (original) +++ freeswitch/trunk/src/mod/event_handlers/mod_event_multicast/mod_event_multicast.c Wed Jun 17 23:20:45 2009 @@ -373,6 +373,36 @@ if (host_hash == globals.host_hash) { continue; } +#ifdef HAVE_OPENSSL + if (globals.psk) { + char uuid_str[SWITCH_UUID_FORMATTED_LENGTH+1]; + char *tmp; + int outl, tmplen; + EVP_CIPHER_CTX ctx; + + len -= sizeof(host_hash) + 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; + + EVP_CIPHER_CTX_init(&ctx); + EVP_DecryptInit(&ctx, EVP_bf_cfb(), 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); + + /*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));*/ + /*continue;*/ + packet = tmp; + + } +#endif //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];