static char *
_otr_decrypt_message(const char * const from, const char * const message, gboolean *was_decrypted)
{
char *decrypted = NULL;
OtrlTLV *tlvs = NULL;
OtrlTLV *tlv = NULL;
int result = otrlib_decrypt_message(user_state, &ops, jid, from, message, &decrypted, &tlvs);
// internal libotr message
if (result == 1) {
tlv = otrl_tlv_find(tlvs, OTRL_TLV_DISCONNECTED);
if (tlv) {
ConnContext *context = otrlib_context_find(user_state, from, jid);
if (context != NULL) {
otrl_context_force_plaintext(context);
ui_gone_insecure(from);
}
}
return NULL;
// message was decrypted, return to user
} else if (decrypted != NULL) {
*was_decrypted = TRUE;
return decrypted;
// normal non OTR message
} else {
*was_decrypted = FALSE;
return strdup(message);
}
}
void test_crash1(void)
{
ConnContext *alicecontext, *bobcontext;
printf("\n\n*** Testing old double gcry_cipher_release case ***\n\n");
otrl_context_forget_all(us);
ALICEPOLICY = OTRL_POLICY_DEFAULT;
sending(ALICE, BOB, "?OTR?");
dispatch();
alicecontext = otrl_context_find(us, BOB, ALICE, PROTO, 0, 0, NULL, NULL, NULL);
bobcontext = otrl_context_find(us, ALICE, BOB, PROTO, 0, 0, NULL, NULL, NULL);
sending(ALICE, BOB, "Hi!"); dispatch();
sending(BOB, ALICE, "There!"); dispatch();
sending(ALICE, BOB, "You!"); dispatch();
otrl_context_force_plaintext(bobcontext);
sending(BOB, ALICE, "?OTR?"); dispatch();
sending(ALICE, BOB, "now."); dispatch();
printf("%d %p %p\n", alicecontext->our_keyid, alicecontext->their_y, alicecontext->their_old_y);
printf("%p %p %p %p\n",
alicecontext->sesskeys[0][0].sendenc,
alicecontext->sesskeys[0][1].sendenc,
alicecontext->sesskeys[1][0].sendenc,
alicecontext->sesskeys[1][1].sendenc);
sending(BOB, ALICE, "then."); dispatch();
}
/* Forget all the contexts in a given OtrlUserState. */
void otrl_context_forget_all(OtrlUserState us)
{
while (us->context_root) {
otrl_context_force_plaintext(us->context_root);
otrl_context_forget(us->context_root);
}
}
/* Forget a whole context, so long as it's PLAINTEXT. If a context has child
* instances, don't remove this instance unless children are also all in
* PLAINTEXT state. In this case, the children will also be removed.
* Returns 0 on success, 1 on failure. */
int otrl_context_forget(ConnContext *context)
{
if (context->msgstate != OTRL_MSGSTATE_PLAINTEXT) return 1;
if (context->their_instance == OTRL_INSTAG_MASTER) {
ConnContext *c_iter;
for (c_iter = context; c_iter &&
c_iter->m_context == context->m_context;
c_iter = c_iter->next) {
if (c_iter->msgstate != OTRL_MSGSTATE_PLAINTEXT) return 1;
}
c_iter = context->next;
while (c_iter && c_iter->m_context == context->m_context) {
if (!otrl_context_forget(c_iter)) {
c_iter = context->next;
} else {
return 1;
}
}
}
/* Just to be safe, force to plaintext. This also frees any
* extraneous data lying around. */
otrl_context_force_plaintext(context);
/* First free all the Fingerprints */
while(context->fingerprint_root.next) {
otrl_context_forget_fingerprint(context->fingerprint_root.next, 0);
}
/* Now free all the dynamic info here */
free(context->username);
free(context->accountname);
free(context->protocol);
free(context->smstate);
context->username = NULL;
context->accountname = NULL;
context->protocol = NULL;
context->smstate = NULL;
/* Free the application data, if it exists */
if (context->app_data && context->app_data_free) {
(context->app_data_free)(context->app_data);
context->app_data = NULL;
}
/* Fix the list linkages */
*(context->tous) = context->next;
if (context->next) {
context->next->tous = context->tous;
}
free(context);
return 0;
}
/* Forget all the contexts in a given OtrlUserState. */
void otrl_context_forget_all(OtrlUserState us)
{
ConnContext *c_iter;
for (c_iter = us->context_root; c_iter; c_iter = c_iter->next) {
otrl_context_force_plaintext(c_iter);
}
while (us->context_root) {
otrl_context_forget(us->context_root);
}
}
void test_unreadable(void)
{
ConnContext *bobcontext;
printf("\n\n*** Testing Bob receiving unreadable messages from "
"Alice ***\n\n");
bobcontext = otrl_context_find(us, ALICE, BOB, PROTO, 0, 0, NULL, NULL, NULL);
otrl_context_force_plaintext(bobcontext);
sending(ALICE, BOB, "unreadable text");
dispatch();
}
char*
otr_decrypt_message(const char *const from, const char *const message, gboolean *decrypted)
{
char *newmessage = NULL;
OtrlTLV *tlvs = NULL;
int result = otrlib_decrypt_message(user_state, &ops, jid, from, message, &newmessage, &tlvs);
// internal libotr message
if (result == 1) {
ConnContext *context = otrlib_context_find(user_state, from, jid);
// common tlv handling
OtrlTLV *tlv = otrl_tlv_find(tlvs, OTRL_TLV_DISCONNECTED);
if (tlv) {
if (context) {
otrl_context_force_plaintext(context);
ProfChatWin *chatwin = wins_get_chat(from);
if (chatwin) {
chatwin_otr_unsecured(chatwin);
}
}
}
// library version specific tlv handling
otrlib_handle_tlvs(user_state, &ops, context, tlvs, smp_initiators);
_otr_tlv_free(tlvs);
return NULL;
// message was processed, return to user
} else if (newmessage) {
_otr_tlv_free(tlvs);
if (g_str_has_prefix(message, "?OTR:")) {
*decrypted = TRUE;
}
return newmessage;
// normal non OTR message
} else {
_otr_tlv_free(tlvs);
*decrypted = FALSE;
return strdup(message);
}
}
char *
otr_decrypt_message(const char * const from, const char * const message, gboolean *was_decrypted)
{
char *decrypted = NULL;
OtrlTLV *tlvs = NULL;
int result = otrlib_decrypt_message(user_state, &ops, jid, from, message, &decrypted, &tlvs);
// internal libotr message
if (result == 1) {
ConnContext *context = otrlib_context_find(user_state, from, jid);
// common tlv handling
OtrlTLV *tlv = otrl_tlv_find(tlvs, OTRL_TLV_DISCONNECTED);
if (tlv) {
if (context) {
otrl_context_force_plaintext(context);
ui_gone_insecure(from);
}
}
// library version specific tlv handling
otrlib_handle_tlvs(user_state, &ops, context, tlvs, smp_initiators);
return NULL;
// message was decrypted, return to user
} else if (decrypted) {
*was_decrypted = TRUE;
return decrypted;
// normal non OTR message
} else {
*was_decrypted = FALSE;
return strdup(message);
}
}
/* Forget a whole context, so long as it's PLAINTEXT. */
void otrl_context_forget(ConnContext *context)
{
if (context->msgstate != OTRL_MSGSTATE_PLAINTEXT) return;
/* Just to be safe, force to plaintext. This also frees any
* extraneous data lying around. */
otrl_context_force_plaintext(context);
/* First free all the Fingerprints */
while(context->fingerprint_root.next) {
otrl_context_forget_fingerprint(context->fingerprint_root.next, 0);
}
/* Now free all the dynamic info here */
free(context->username);
free(context->accountname);
free(context->protocol);
free(context->smstate);
context->username = NULL;
context->accountname = NULL;
context->protocol = NULL;
context->smstate = NULL;
/* Free the application data, if it exists */
if (context->app_data && context->app_data_free) {
(context->app_data_free)(context->app_data);
context->app_data = NULL;
}
/* Fix the list linkages */
*(context->tous) = context->next;
if (context->next) {
context->next->tous = context->tous;
}
free(context);
}
