Add support for setting ICE ufrag and pwd

CMakeLists.txt

@@ -77,6 +77,7 @@ set(TESTS_SOURCES
     ${CMAKE_CURRENT_SOURCE_DIR}/test/server.c
     ${CMAKE_CURRENT_SOURCE_DIR}/test/conflict.c
     ${CMAKE_CURRENT_SOURCE_DIR}/test/bind.c
+	${CMAKE_CURRENT_SOURCE_DIR}/test/ufrag.c
 )
 source_group("Test Files" FILES "${TESTS_SOURCES}")
 

include/juice/juice.h

@@ -116,6 +116,7 @@ JUICE_EXPORT int juice_get_selected_candidates(juice_agent_t *agent, char *local
                                                char *remote, size_t remote_size);
 JUICE_EXPORT int juice_get_selected_addresses(juice_agent_t *agent, char *local, size_t local_size,
                                               char *remote, size_t remote_size);
+JUICE_EXPORT int juice_set_local_ice_attributes(juice_agent_t *agent, const char *ufrag, const char *pwd);
 JUICE_EXPORT const char *juice_state_to_string(juice_state_t state);
 
 // ICE server

src/juice.c

@@ -16,6 +16,7 @@
 #endif
 
 #include <stdio.h>
+#include <string.h>
 
 JUICE_EXPORT juice_agent_t *juice_create(const juice_config_t *config) {
 	if (!config)
@@ -147,6 +148,24 @@ JUICE_EXPORT int juice_get_selected_addresses(juice_agent_t *agent, char *local,
 	return JUICE_ERR_SUCCESS;
 }
 
+int juice_set_local_ice_attributes(juice_agent_t *agent, const char *ufrag, const char *pwd)
+{
+	if (agent->conn_impl) {
+		JLOG_WARN("Candidates gathering already started");
+		return JUICE_ERR_FAILED;
+	}
+
+	if (!ufrag || !pwd || strlen(ufrag) < 4 || strlen(pwd) < 22) {
+		JLOG_WARN("Invalid ICE credentials");
+		return JUICE_ERR_INVALID;
+	}
+
+	snprintf(agent->local.ice_ufrag, sizeof(agent->local.ice_ufrag), "%s", ufrag);
+	snprintf(agent->local.ice_pwd, sizeof(agent->local.ice_pwd), "%s", pwd);
+
+	return JUICE_ERR_SUCCESS;
+}
+
 JUICE_EXPORT const char *juice_state_to_string(juice_state_t state) {
 	switch (state) {
 	case JUICE_STATE_DISCONNECTED:

test/main.c

@@ -21,6 +21,7 @@ int test_gathering(void);
 int test_turn(void);
 int test_conflict(void);
 int test_bind(void);
+int test_ufrag(void);
 
 #ifndef NO_SERVER
 int test_server(void);
@@ -97,6 +98,12 @@ int main(int argc, char **argv) {
 		return -1;
 	}
 
+	printf("\nRunning ufrag test...\n");
+	if (test_ufrag()) {
+		fprintf(stderr, "Ufrag test failed\n");
+		return -1;
+	}
+
 #ifndef NO_SERVER
 	printf("\nRunning server test...\n");
 	if (test_server()) {

test/ufrag.c

@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) 2024 Paul-Louis Ageneau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include "juice/juice.h"
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+int test_ufrag() {
+	juice_agent_t *agent;
+	bool success = true;
+	int ret;
+
+	juice_set_log_level(JUICE_LOG_LEVEL_DEBUG);
+
+	// Create agent
+	juice_config_t config;
+	memset(&config, 0, sizeof(config));
+
+	agent = juice_create(&config);
+
+	if (juice_set_local_ice_attributes(agent, NULL, NULL) != JUICE_ERR_INVALID)
+		success = false;
+
+	if (juice_set_local_ice_attributes(agent, "ufrag", NULL) != JUICE_ERR_INVALID)
+		success = false;
+
+	if (juice_set_local_ice_attributes(agent, NULL, "pw01234567890123456789") != JUICE_ERR_INVALID)
+		success = false;
+
+	if (juice_set_local_ice_attributes(agent, "ufrag", "pw0123456789012345678") != JUICE_ERR_INVALID)
+		success = false;
+
+	if (juice_set_local_ice_attributes(agent, "usr", "pw01234567890123456789") != JUICE_ERR_INVALID)
+		success = false;
+
+
+	// Set local ICE attributes
+	juice_set_local_ice_attributes(agent, "ufrag", "pw01234567890123456789");
+
+	// Generate local description
+	char sdp[JUICE_MAX_SDP_STRING_LEN];
+	juice_get_local_description(agent, sdp, JUICE_MAX_SDP_STRING_LEN);
+	printf("Local description:\n%s\n", sdp);
+
+	if (strstr(sdp, "a=ice-ufrag:ufrag\r\n") == NULL)
+		success = false;
+
+	if (strstr(sdp, "a=ice-pwd:pw01234567890123456789\r\n") == NULL)
+		success = false;
+
+	// Destroy
+	juice_destroy(agent);
+
+	if (success) {
+		printf("Success\n");
+		return 0;
+	} else {
+		printf("Failure\n");
+		return -1;
+	}
+}