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Initial decryption support 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13828 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Andrew Thompson 2009-06-18 04:20:45 +00:00
parent 94daf904b3
commit 889c336411
1 changed files with 30 additions and 0 deletions
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30
src/mod/event_handlers/mod_event_multicast/mod_event_multicast.c
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@ -373,6 +373,36 @@ SWITCH_MODULE_RUNTIME_FUNCTION(mod_event_multicast_runtime)
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];