/* Forget a fingerprint (so long as it's not the active one. If it's a
* fingerprint_root, forget the whole context (as long as
* and_maybe_context is set, and it's PLAINTEXT). Also, if it's not
* the fingerprint_root, but it's the only fingerprint, and we're
* PLAINTEXT, forget the whole context if and_maybe_context is set. */
void otrl_context_forget_fingerprint(Fingerprint *fprint,
int and_maybe_context)
{
ConnContext *context = fprint->context;
if (fprint == &(context->fingerprint_root)) {
if (context->msgstate == OTRL_MSGSTATE_PLAINTEXT &&
and_maybe_context) {
otrl_context_forget(context);
}
} else {
if (context->msgstate != OTRL_MSGSTATE_PLAINTEXT ||
context->active_fingerprint != fprint) {
free(fprint->fingerprint);
free(fprint->trust);
*(fprint->tous) = fprint->next;
if (fprint->next) {
fprint->next->tous = fprint->tous;
}
free(fprint);
if (context->msgstate == OTRL_MSGSTATE_PLAINTEXT &&
context->fingerprint_root.next == NULL &&
and_maybe_context) {
/* We just deleted the only fingerprint. Forget the
* whole thing. */
otrl_context_forget(context);
}
}
}
}
/* 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);
}
}
