Add functions to check if ICE remote credentials have changed.

include/mediastreamer2/ice.h

@@ -322,6 +322,16 @@ MS2_PUBLIC void ice_session_set_role(IceSession *session, IceRole role);
  */
 void ice_session_set_local_credentials(IceSession *session, const char *ufrag, const char *pwd);
 
+/**
+ * Tell if remote credentials of an ICE session have changed or not.
+ *
+ * @param session A pointer to a session
+ * @param ufrag The new remote username fragment
+ * @param pwd The new remote password
+ * @return TRUE if the remote credentials of the session have changed, FALSE otherwise.
+ */
+MS2_PUBLIC bool_t ice_session_remote_credentials_changed(IceSession *session, const char *ufrag, const char *pwd);
+
 /**
  * Set the remote credentials of an ICE session.
  *
@@ -467,6 +477,16 @@ MS2_PUBLIC const char * ice_check_list_remote_pwd(const IceCheckList *cl);
  */
 MS2_PUBLIC bool_t ice_check_list_is_mismatch(const IceCheckList *cl);
 
+/**
+ * Tell if remote credentials of an ICE check list have changed or not.
+ *
+ * @param cl A pointer to a check list
+ * @param ufrag The new remote username fragment
+ * @param pwd The new remote password
+ * @return TRUE if the remote credentials of the check list have changed, FALSE otherwise.
+ */
+MS2_PUBLIC bool_t ice_check_list_remote_credentials_changed(IceCheckList *cl, const char *ufrag, const char *pwd);
+
 /**
  * Set the remote credentials of an ICE check list.
  *

src/ice.c

@@ -450,6 +450,24 @@ static int ice_find_default_local_candidate(const IceCandidate *candidate, const
 	return !((candidate->componentID == *componentID) && (candidate->is_default == TRUE));
 }
 
+bool_t ice_check_list_remote_credentials_changed(IceCheckList *cl, const char *ufrag, const char *pwd)
+{
+	const char *old_ufrag;
+	const char *old_pwd;
+	if ((cl->remote_ufrag == NULL) || (cl->remote_pwd == NULL)) {
+		if (cl->remote_ufrag == NULL) old_ufrag = cl->session->remote_ufrag;
+		else old_ufrag = cl->remote_ufrag;
+		if ((strlen(ufrag) != strlen(old_ufrag)) || (strcmp(ufrag, old_ufrag) != 0)) return TRUE;
+		if (cl->remote_pwd == NULL) old_pwd = cl->session->remote_pwd;
+		else old_pwd = cl->remote_pwd;
+		if ((strlen(pwd) != strlen(old_pwd)) || (strcmp(pwd, old_pwd) != 0)) return TRUE;
+		return FALSE;
+	}
+	if (strlen(ufrag) != strlen(cl->remote_ufrag) || (strcmp(ufrag, cl->remote_ufrag) != 0)) return TRUE;
+	if (strlen(pwd) != strlen(cl->remote_pwd) || (strcmp(pwd, cl->remote_pwd) != 0)) return TRUE;
+	return FALSE;
+}
+
 void ice_check_list_set_remote_credentials(IceCheckList *cl, const char *ufrag, const char *pwd)
 {
 	ice_set_credentials(&cl->remote_ufrag, &cl->remote_pwd, ufrag, pwd);
@@ -633,6 +651,14 @@ void ice_session_set_local_credentials(IceSession *session, const char *ufrag, c
 	ice_set_credentials(&session->local_ufrag, &session->local_pwd, ufrag, pwd);
 }
 
+bool_t ice_session_remote_credentials_changed(IceSession *session, const char *ufrag, const char *pwd)
+{
+	if ((session->remote_ufrag == NULL) || (session->remote_pwd == NULL)) return TRUE;
+	if (strlen(ufrag) != strlen(session->remote_ufrag) || (strcmp(ufrag, session->remote_ufrag) != 0)) return TRUE;
+	if (strlen(pwd) != strlen(session->remote_pwd) || (strcmp(pwd, session->remote_pwd) != 0)) return TRUE;
+	return FALSE;
+}
+
 void ice_session_set_remote_credentials(IceSession *session, const char *ufrag, const char *pwd)
 {
 	ice_set_credentials(&session->remote_ufrag, &session->remote_pwd, ufrag, pwd);