* #27232: jni: added pjproject checkout as regular git content
We will remove it once the next release of pjsip (with Android support)
comes out and is merged into SFLphone.
diff --git a/jni/pjproject-android/.svn/pristine/46/469515d445f1c702ba3977750d56be6d45c1d258.svn-base b/jni/pjproject-android/.svn/pristine/46/469515d445f1c702ba3977750d56be6d45c1d258.svn-base
new file mode 100644
index 0000000..b13f02f
--- /dev/null
+++ b/jni/pjproject-android/.svn/pristine/46/469515d445f1c702ba3977750d56be6d45c1d258.svn-base
@@ -0,0 +1,1377 @@
+/* $Id$ */
+/*
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include "turn.h"
+#include "auth.h"
+
+
+#define THIS_FILE "allocation.c"
+
+
+enum {
+ TIMER_ID_NONE,
+ TIMER_ID_TIMEOUT,
+ TIMER_ID_DESTROY
+};
+
+#define DESTROY_DELAY {0, 500}
+#define PEER_TABLE_SIZE 32
+
+#define MAX_CLIENT_BANDWIDTH 128 /* In Kbps */
+#define DEFA_CLIENT_BANDWIDTH 64
+
+#define MIN_LIFETIME 30
+#define MAX_LIFETIME 600
+#define DEF_LIFETIME 300
+
+
+/* Parsed Allocation request. */
+typedef struct alloc_request
+{
+ unsigned tp_type; /* Requested transport */
+ char addr[PJ_INET6_ADDRSTRLEN]; /* Requested IP */
+ unsigned bandwidth; /* Requested bandwidth */
+ unsigned lifetime; /* Lifetime. */
+ unsigned rpp_bits; /* A bits */
+ unsigned rpp_port; /* Requested port */
+} alloc_request;
+
+
+
+/* Prototypes */
+static void destroy_allocation(pj_turn_allocation *alloc);
+static pj_status_t create_relay(pj_turn_srv *srv,
+ pj_turn_allocation *alloc,
+ const pj_stun_msg *msg,
+ const alloc_request *req,
+ pj_turn_relay_res *relay);
+static void destroy_relay(pj_turn_relay_res *relay);
+static void on_rx_from_peer(pj_ioqueue_key_t *key,
+ pj_ioqueue_op_key_t *op_key,
+ pj_ssize_t bytes_read);
+static pj_status_t stun_on_send_msg(pj_stun_session *sess,
+ void *token,
+ const void *pkt,
+ pj_size_t pkt_size,
+ const pj_sockaddr_t *dst_addr,
+ unsigned addr_len);
+static pj_status_t stun_on_rx_request(pj_stun_session *sess,
+ const pj_uint8_t *pkt,
+ unsigned pkt_len,
+ const pj_stun_rx_data *rdata,
+ void *token,
+ const pj_sockaddr_t *src_addr,
+ unsigned src_addr_len);
+static pj_status_t stun_on_rx_indication(pj_stun_session *sess,
+ const pj_uint8_t *pkt,
+ unsigned pkt_len,
+ const pj_stun_msg *msg,
+ void *token,
+ const pj_sockaddr_t *src_addr,
+ unsigned src_addr_len);
+
+/* Log allocation error */
+static void alloc_err(pj_turn_allocation *alloc, const char *title,
+ pj_status_t status)
+{
+ char errmsg[PJ_ERR_MSG_SIZE];
+
+ pj_strerror(status, errmsg, sizeof(errmsg));
+ PJ_LOG(4,(alloc->obj_name, "%s for client %s: %s",
+ title, alloc->info, errmsg));
+}
+
+
+/* Parse ALLOCATE request */
+static pj_status_t parse_allocate_req(alloc_request *cfg,
+ pj_stun_session *sess,
+ const pj_stun_rx_data *rdata,
+ const pj_sockaddr_t *src_addr,
+ unsigned src_addr_len)
+{
+ const pj_stun_msg *req = rdata->msg;
+ pj_stun_bandwidth_attr *attr_bw;
+ pj_stun_req_transport_attr *attr_req_tp;
+ pj_stun_res_token_attr *attr_res_token;
+ pj_stun_lifetime_attr *attr_lifetime;
+
+ pj_bzero(cfg, sizeof(*cfg));
+
+ /* Get BANDWIDTH attribute, if any. */
+ attr_bw = (pj_stun_uint_attr*)
+ pj_stun_msg_find_attr(req, PJ_STUN_ATTR_BANDWIDTH, 0);
+ if (attr_bw) {
+ cfg->bandwidth = attr_bw->value;
+ } else {
+ cfg->bandwidth = DEFA_CLIENT_BANDWIDTH;
+ }
+
+ /* Check if we can satisfy the bandwidth */
+ if (cfg->bandwidth > MAX_CLIENT_BANDWIDTH) {
+ pj_stun_session_respond(sess, rdata,
+ PJ_STUN_SC_ALLOCATION_QUOTA_REACHED,
+ "Invalid bandwidth", NULL, PJ_TRUE,
+ src_addr, src_addr_len);
+ return PJ_STATUS_FROM_STUN_CODE(PJ_STUN_SC_ALLOCATION_QUOTA_REACHED);
+ }
+
+ /* MUST have REQUESTED-TRANSPORT attribute */
+ attr_req_tp = (pj_stun_uint_attr*)
+ pj_stun_msg_find_attr(req, PJ_STUN_ATTR_REQ_TRANSPORT, 0);
+ if (attr_req_tp == NULL) {
+ pj_stun_session_respond(sess, rdata, PJ_STUN_SC_BAD_REQUEST,
+ "Missing REQUESTED-TRANSPORT attribute",
+ NULL, PJ_TRUE, src_addr, src_addr_len);
+ return PJ_STATUS_FROM_STUN_CODE(PJ_STUN_SC_BAD_REQUEST);
+ }
+
+ cfg->tp_type = PJ_STUN_GET_RT_PROTO(attr_req_tp->value);
+
+ /* Can only support UDP for now */
+ if (cfg->tp_type != PJ_TURN_TP_UDP) {
+ pj_stun_session_respond(sess, rdata, PJ_STUN_SC_UNSUPP_TRANSPORT_PROTO,
+ NULL, NULL, PJ_TRUE, src_addr, src_addr_len);
+ return PJ_STATUS_FROM_STUN_CODE(PJ_STUN_SC_UNSUPP_TRANSPORT_PROTO);
+ }
+
+ /* Get RESERVATION-TOKEN attribute, if any */
+ attr_res_token = (pj_stun_res_token_attr*)
+ pj_stun_msg_find_attr(req, PJ_STUN_ATTR_RESERVATION_TOKEN,
+ 0);
+ if (attr_res_token) {
+ /* We don't support RESERVATION-TOKEN for now */
+ pj_stun_session_respond(sess, rdata,
+ PJ_STUN_SC_BAD_REQUEST,
+ "RESERVATION-TOKEN is not supported", NULL,
+ PJ_TRUE, src_addr, src_addr_len);
+ return PJ_STATUS_FROM_STUN_CODE(PJ_STUN_SC_BAD_REQUEST);
+ }
+
+ /* Get LIFETIME attribute */
+ attr_lifetime = (pj_stun_uint_attr*)
+ pj_stun_msg_find_attr(req, PJ_STUN_ATTR_LIFETIME, 0);
+ if (attr_lifetime) {
+ cfg->lifetime = attr_lifetime->value;
+ if (cfg->lifetime < MIN_LIFETIME) {
+ pj_stun_session_respond(sess, rdata, PJ_STUN_SC_BAD_REQUEST,
+ "LIFETIME too short", NULL,
+ PJ_TRUE, src_addr, src_addr_len);
+ return PJ_STATUS_FROM_STUN_CODE(PJ_STUN_SC_BAD_REQUEST);
+ }
+ if (cfg->lifetime > MAX_LIFETIME)
+ cfg->lifetime = MAX_LIFETIME;
+ } else {
+ cfg->lifetime = DEF_LIFETIME;
+ }
+
+ return PJ_SUCCESS;
+}
+
+
+/* Respond to ALLOCATE request */
+static pj_status_t send_allocate_response(pj_turn_allocation *alloc,
+ pj_stun_session *srv_sess,
+ pj_turn_transport *transport,
+ const pj_stun_rx_data *rdata)
+{
+ pj_stun_tx_data *tdata;
+ pj_status_t status;
+
+ /* Respond the original ALLOCATE request */
+ status = pj_stun_session_create_res(srv_sess, rdata, 0, NULL, &tdata);
+ if (status != PJ_SUCCESS)
+ return status;
+
+ /* Add XOR-RELAYED-ADDRESS attribute */
+ pj_stun_msg_add_sockaddr_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_XOR_RELAYED_ADDR, PJ_TRUE,
+ &alloc->relay.hkey.addr,
+ pj_sockaddr_get_len(&alloc->relay.hkey.addr));
+
+ /* Add LIFETIME. */
+ pj_stun_msg_add_uint_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_LIFETIME,
+ (unsigned)alloc->relay.lifetime);
+
+ /* Add BANDWIDTH */
+ pj_stun_msg_add_uint_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_BANDWIDTH,
+ alloc->bandwidth);
+
+ /* Add RESERVATION-TOKEN */
+ PJ_TODO(ADD_RESERVATION_TOKEN);
+
+ /* Add XOR-MAPPED-ADDRESS */
+ pj_stun_msg_add_sockaddr_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_XOR_MAPPED_ADDR, PJ_TRUE,
+ &alloc->hkey.clt_addr,
+ pj_sockaddr_get_len(&alloc->hkey.clt_addr));
+
+ /* Send the response */
+ return pj_stun_session_send_msg(srv_sess, transport, PJ_TRUE,
+ PJ_FALSE, &alloc->hkey.clt_addr,
+ pj_sockaddr_get_len(&alloc->hkey.clt_addr),
+ tdata);
+}
+
+
+/*
+ * Init credential for the allocation. We use static credential, meaning that
+ * the user's password must not change during allocation.
+ */
+static pj_status_t init_cred(pj_turn_allocation *alloc, const pj_stun_msg *req)
+{
+ const pj_stun_username_attr *user;
+ const pj_stun_realm_attr *realm;
+ const pj_stun_nonce_attr *nonce;
+ pj_status_t status;
+
+ realm = (const pj_stun_realm_attr*)
+ pj_stun_msg_find_attr(req, PJ_STUN_ATTR_REALM, 0);
+ PJ_ASSERT_RETURN(realm != NULL, PJ_EBUG);
+
+ user = (const pj_stun_username_attr*)
+ pj_stun_msg_find_attr(req, PJ_STUN_ATTR_USERNAME, 0);
+ PJ_ASSERT_RETURN(user != NULL, PJ_EBUG);
+
+ nonce = (const pj_stun_nonce_attr*)
+ pj_stun_msg_find_attr(req, PJ_STUN_ATTR_NONCE, 0);
+ PJ_ASSERT_RETURN(nonce != NULL, PJ_EBUG);
+
+ /* Lookup the password */
+ status = pj_turn_get_password(NULL, NULL, &realm->value,
+ &user->value, alloc->pool,
+ &alloc->cred.data.static_cred.data_type,
+ &alloc->cred.data.static_cred.data);
+ if (status != PJ_SUCCESS)
+ return status;
+
+ /* Save credential */
+ alloc->cred.type = PJ_STUN_AUTH_CRED_STATIC;
+ pj_strdup(alloc->pool, &alloc->cred.data.static_cred.realm, &realm->value);
+ pj_strdup(alloc->pool, &alloc->cred.data.static_cred.username, &user->value);
+ pj_strdup(alloc->pool, &alloc->cred.data.static_cred.nonce, &nonce->value);
+
+ return PJ_SUCCESS;
+}
+
+
+/*
+ * Create new allocation.
+ */
+PJ_DEF(pj_status_t) pj_turn_allocation_create(pj_turn_transport *transport,
+ const pj_sockaddr_t *src_addr,
+ unsigned src_addr_len,
+ const pj_stun_rx_data *rdata,
+ pj_stun_session *srv_sess,
+ pj_turn_allocation **p_alloc)
+{
+ pj_turn_srv *srv = transport->listener->server;
+ const pj_stun_msg *msg = rdata->msg;
+ pj_pool_t *pool;
+ alloc_request req;
+ pj_turn_allocation *alloc;
+ pj_stun_session_cb sess_cb;
+ char str_tmp[80];
+ pj_status_t status;
+
+ /* Parse ALLOCATE request */
+ status = parse_allocate_req(&req, srv_sess, rdata, src_addr, src_addr_len);
+ if (status != PJ_SUCCESS)
+ return status;
+
+ pool = pj_pool_create(srv->core.pf, "alloc%p", 1000, 1000, NULL);
+
+ /* Init allocation structure */
+ alloc = PJ_POOL_ZALLOC_T(pool, pj_turn_allocation);
+ alloc->pool = pool;
+ alloc->obj_name = pool->obj_name;
+ alloc->relay.tp.sock = PJ_INVALID_SOCKET;
+ alloc->server = transport->listener->server;
+
+ alloc->bandwidth = req.bandwidth;
+
+ /* Set transport */
+ alloc->transport = transport;
+ pj_turn_transport_add_ref(transport, alloc);
+
+ alloc->hkey.tp_type = transport->listener->tp_type;
+ pj_memcpy(&alloc->hkey.clt_addr, src_addr, src_addr_len);
+
+ status = pj_lock_create_recursive_mutex(pool, alloc->obj_name,
+ &alloc->lock);
+ if (status != PJ_SUCCESS) {
+ goto on_error;
+ }
+
+ /* Create peer hash table */
+ alloc->peer_table = pj_hash_create(pool, PEER_TABLE_SIZE);
+
+ /* Create channel hash table */
+ alloc->ch_table = pj_hash_create(pool, PEER_TABLE_SIZE);
+
+ /* Print info */
+ pj_ansi_strcpy(alloc->info,
+ pj_turn_tp_type_name(transport->listener->tp_type));
+ alloc->info[3] = ':';
+ pj_sockaddr_print(src_addr, alloc->info+4, sizeof(alloc->info)-4, 3);
+
+ /* Create STUN session to handle STUN communication with client */
+ pj_bzero(&sess_cb, sizeof(sess_cb));
+ sess_cb.on_send_msg = &stun_on_send_msg;
+ sess_cb.on_rx_request = &stun_on_rx_request;
+ sess_cb.on_rx_indication = &stun_on_rx_indication;
+ status = pj_stun_session_create(&srv->core.stun_cfg, alloc->obj_name,
+ &sess_cb, PJ_FALSE, NULL, &alloc->sess);
+ if (status != PJ_SUCCESS) {
+ goto on_error;
+ }
+
+ /* Attach to STUN session */
+ pj_stun_session_set_user_data(alloc->sess, alloc);
+
+ /* Init authentication credential */
+ status = init_cred(alloc, msg);
+ if (status != PJ_SUCCESS) {
+ goto on_error;
+ }
+
+ /* Attach authentication credential to STUN session */
+ pj_stun_session_set_credential(alloc->sess, PJ_STUN_AUTH_LONG_TERM,
+ &alloc->cred);
+
+ /* Create the relay resource */
+ status = create_relay(srv, alloc, msg, &req, &alloc->relay);
+ if (status != PJ_SUCCESS) {
+ goto on_error;
+ }
+
+ /* Register this allocation */
+ pj_turn_srv_register_allocation(srv, alloc);
+
+ /* Respond to ALLOCATE request */
+ status = send_allocate_response(alloc, srv_sess, transport, rdata);
+ if (status != PJ_SUCCESS)
+ goto on_error;
+
+ /* Done */
+ pj_sockaddr_print(&alloc->relay.hkey.addr, str_tmp,
+ sizeof(str_tmp), 3);
+ PJ_LOG(4,(alloc->obj_name, "Client %s created, relay addr=%s:%s",
+ alloc->info, pj_turn_tp_type_name(req.tp_type), str_tmp));
+
+ /* Success */
+ *p_alloc = alloc;
+ return PJ_SUCCESS;
+
+on_error:
+ /* Send reply to the ALLOCATE request */
+ pj_strerror(status, str_tmp, sizeof(str_tmp));
+ pj_stun_session_respond(srv_sess, rdata, PJ_STUN_SC_BAD_REQUEST, str_tmp,
+ transport, PJ_TRUE, src_addr, src_addr_len);
+
+ /* Cleanup */
+ destroy_allocation(alloc);
+ return status;
+}
+
+
+/* Destroy relay resource */
+static void destroy_relay(pj_turn_relay_res *relay)
+{
+ if (relay->timer.id) {
+ pj_timer_heap_cancel(relay->allocation->server->core.timer_heap,
+ &relay->timer);
+ relay->timer.id = PJ_FALSE;
+ }
+
+ if (relay->tp.key) {
+ pj_ioqueue_unregister(relay->tp.key);
+ relay->tp.key = NULL;
+ relay->tp.sock = PJ_INVALID_SOCKET;
+ } else if (relay->tp.sock != PJ_INVALID_SOCKET) {
+ pj_sock_close(relay->tp.sock);
+ relay->tp.sock = PJ_INVALID_SOCKET;
+ }
+
+ /* Mark as shutdown */
+ relay->lifetime = 0;
+}
+
+
+/*
+ * Really destroy allocation.
+ */
+static void destroy_allocation(pj_turn_allocation *alloc)
+{
+ pj_pool_t *pool;
+
+ /* Unregister this allocation */
+ pj_turn_srv_unregister_allocation(alloc->server, alloc);
+
+ /* Destroy relay */
+ destroy_relay(&alloc->relay);
+
+ /* Must lock only after destroying relay otherwise deadlock */
+ if (alloc->lock) {
+ pj_lock_acquire(alloc->lock);
+ }
+
+ /* Unreference transport */
+ if (alloc->transport) {
+ pj_turn_transport_dec_ref(alloc->transport, alloc);
+ alloc->transport = NULL;
+ }
+
+ /* Destroy STUN session */
+ if (alloc->sess) {
+ pj_stun_session_destroy(alloc->sess);
+ alloc->sess = NULL;
+ }
+
+ /* Destroy lock */
+ if (alloc->lock) {
+ pj_lock_release(alloc->lock);
+ pj_lock_destroy(alloc->lock);
+ alloc->lock = NULL;
+ }
+
+ /* Destroy pool */
+ pool = alloc->pool;
+ if (pool) {
+ alloc->pool = NULL;
+ pj_pool_release(pool);
+ }
+}
+
+
+PJ_DECL(void) pj_turn_allocation_destroy(pj_turn_allocation *alloc)
+{
+ destroy_allocation(alloc);
+}
+
+
+/*
+ * Handle transport closure.
+ */
+PJ_DEF(void) pj_turn_allocation_on_transport_closed( pj_turn_allocation *alloc,
+ pj_turn_transport *tp)
+{
+ PJ_LOG(5,(alloc->obj_name, "Transport %s unexpectedly closed, destroying "
+ "allocation %s", tp->info, alloc->info));
+ pj_turn_transport_dec_ref(tp, alloc);
+ alloc->transport = NULL;
+ destroy_allocation(alloc);
+}
+
+
+/* Initiate shutdown sequence for this allocation and start destroy timer.
+ * Once allocation is marked as shutting down, any packets will be
+ * rejected/discarded
+ */
+static void alloc_shutdown(pj_turn_allocation *alloc)
+{
+ pj_time_val destroy_delay = DESTROY_DELAY;
+
+ /* Work with existing schedule */
+ if (alloc->relay.timer.id == TIMER_ID_TIMEOUT) {
+ /* Cancel existing shutdown timer */
+ pj_timer_heap_cancel(alloc->server->core.timer_heap,
+ &alloc->relay.timer);
+ alloc->relay.timer.id = TIMER_ID_NONE;
+
+ } else if (alloc->relay.timer.id == TIMER_ID_DESTROY) {
+ /* We've been scheduled to be destroyed, ignore this
+ * shutdown request.
+ */
+ return;
+ }
+
+ pj_assert(alloc->relay.timer.id == TIMER_ID_NONE);
+
+ /* Shutdown relay socket */
+ destroy_relay(&alloc->relay);
+
+ /* Don't unregister from hash table because we still need to
+ * handle REFRESH retransmission.
+ */
+
+ /* Schedule destroy timer */
+ alloc->relay.timer.id = TIMER_ID_DESTROY;
+ pj_timer_heap_schedule(alloc->server->core.timer_heap,
+ &alloc->relay.timer, &destroy_delay);
+}
+
+
+/* Reschedule timeout using current lifetime setting */
+static pj_status_t resched_timeout(pj_turn_allocation *alloc)
+{
+ pj_time_val delay;
+ pj_status_t status;
+
+ pj_gettimeofday(&alloc->relay.expiry);
+ alloc->relay.expiry.sec += alloc->relay.lifetime;
+
+ pj_assert(alloc->relay.timer.id != TIMER_ID_DESTROY);
+ if (alloc->relay.timer.id != 0) {
+ pj_timer_heap_cancel(alloc->server->core.timer_heap,
+ &alloc->relay.timer);
+ alloc->relay.timer.id = TIMER_ID_NONE;
+ }
+
+ delay.sec = alloc->relay.lifetime;
+ delay.msec = 0;
+
+ alloc->relay.timer.id = TIMER_ID_TIMEOUT;
+ status = pj_timer_heap_schedule(alloc->server->core.timer_heap,
+ &alloc->relay.timer, &delay);
+ if (status != PJ_SUCCESS) {
+ alloc->relay.timer.id = TIMER_ID_NONE;
+ return status;
+ }
+
+ return PJ_SUCCESS;
+}
+
+
+/* Timer timeout callback */
+static void relay_timeout_cb(pj_timer_heap_t *heap, pj_timer_entry *e)
+{
+ pj_turn_relay_res *rel;
+ pj_turn_allocation *alloc;
+
+ PJ_UNUSED_ARG(heap);
+
+ rel = (pj_turn_relay_res*) e->user_data;
+ alloc = rel->allocation;
+
+ if (e->id == TIMER_ID_TIMEOUT) {
+
+ e->id = TIMER_ID_NONE;
+
+ PJ_LOG(4,(alloc->obj_name,
+ "Client %s refresh timed-out, shutting down..",
+ alloc->info));
+
+ alloc_shutdown(alloc);
+
+ } else if (e->id == TIMER_ID_DESTROY) {
+ e->id = TIMER_ID_NONE;
+
+ PJ_LOG(4,(alloc->obj_name, "Client %s destroying..",
+ alloc->info));
+
+ destroy_allocation(alloc);
+ }
+}
+
+
+/*
+ * Create relay.
+ */
+static pj_status_t create_relay(pj_turn_srv *srv,
+ pj_turn_allocation *alloc,
+ const pj_stun_msg *msg,
+ const alloc_request *req,
+ pj_turn_relay_res *relay)
+{
+ enum { RETRY = 40 };
+ pj_pool_t *pool = alloc->pool;
+ int retry, retry_max, sock_type;
+ pj_ioqueue_callback icb;
+ int af, namelen;
+ pj_stun_string_attr *sa;
+ pj_status_t status;
+
+ pj_bzero(relay, sizeof(*relay));
+
+ relay->allocation = alloc;
+ relay->tp.sock = PJ_INVALID_SOCKET;
+
+ /* TODO: get the requested address family from somewhere */
+ af = alloc->transport->listener->addr.addr.sa_family;
+
+ /* Save realm */
+ sa = (pj_stun_string_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_REALM, 0);
+ PJ_ASSERT_RETURN(sa, PJ_EINVALIDOP);
+ pj_strdup(pool, &relay->realm, &sa->value);
+
+ /* Save username */
+ sa = (pj_stun_string_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_USERNAME, 0);
+ PJ_ASSERT_RETURN(sa, PJ_EINVALIDOP);
+ pj_strdup(pool, &relay->user, &sa->value);
+
+ /* Lifetime and timeout */
+ relay->lifetime = req->lifetime;
+ pj_timer_entry_init(&relay->timer, TIMER_ID_NONE, relay,
+ &relay_timeout_cb);
+ resched_timeout(alloc);
+
+ /* Transport type */
+ relay->hkey.tp_type = req->tp_type;
+
+ /* Create the socket */
+ if (req->tp_type == PJ_TURN_TP_UDP) {
+ sock_type = pj_SOCK_DGRAM();
+ } else if (req->tp_type == PJ_TURN_TP_TCP) {
+ sock_type = pj_SOCK_STREAM();
+ } else {
+ pj_assert(!"Unknown transport");
+ return PJ_EINVALIDOP;
+ }
+
+ status = pj_sock_socket(af, sock_type, 0, &relay->tp.sock);
+ if (status != PJ_SUCCESS) {
+ pj_bzero(relay, sizeof(*relay));
+ return status;
+ }
+
+ /* Find suitable port for this allocation */
+ if (req->rpp_port) {
+ retry_max = 1;
+ } else {
+ retry_max = RETRY;
+ }
+
+ for (retry=0; retry<retry_max; ++retry) {
+ pj_uint16_t port;
+ pj_sockaddr bound_addr;
+
+ pj_lock_acquire(srv->core.lock);
+
+ if (req->rpp_port) {
+ port = (pj_uint16_t) req->rpp_port;
+ } else if (req->tp_type == PJ_TURN_TP_UDP) {
+ port = (pj_uint16_t) srv->ports.next_udp++;
+ if (srv->ports.next_udp > srv->ports.max_udp)
+ srv->ports.next_udp = srv->ports.min_udp;
+ } else if (req->tp_type == PJ_TURN_TP_TCP) {
+ port = (pj_uint16_t) srv->ports.next_tcp++;
+ if (srv->ports.next_tcp > srv->ports.max_tcp)
+ srv->ports.next_tcp = srv->ports.min_tcp;
+ } else {
+ pj_assert(!"Invalid transport");
+ port = 0;
+ }
+
+ pj_lock_release(srv->core.lock);
+
+ pj_sockaddr_init(af, &bound_addr, NULL, port);
+
+ status = pj_sock_bind(relay->tp.sock, &bound_addr,
+ pj_sockaddr_get_len(&bound_addr));
+ if (status == PJ_SUCCESS)
+ break;
+ }
+
+ if (status != PJ_SUCCESS) {
+ /* Unable to allocate port */
+ PJ_LOG(4,(THIS_FILE, "Unable to allocate relay, giving up: err %d",
+ status));
+ pj_sock_close(relay->tp.sock);
+ relay->tp.sock = PJ_INVALID_SOCKET;
+ return status;
+ }
+
+ /* Init relay key */
+ namelen = sizeof(relay->hkey.addr);
+ status = pj_sock_getsockname(relay->tp.sock, &relay->hkey.addr, &namelen);
+ if (status != PJ_SUCCESS) {
+ PJ_LOG(4,(THIS_FILE, "pj_sock_getsockname() failed: err %d",
+ status));
+ pj_sock_close(relay->tp.sock);
+ relay->tp.sock = PJ_INVALID_SOCKET;
+ return status;
+ }
+ if (!pj_sockaddr_has_addr(&relay->hkey.addr)) {
+ pj_sockaddr_copy_addr(&relay->hkey.addr,
+ &alloc->transport->listener->addr);
+ }
+ if (!pj_sockaddr_has_addr(&relay->hkey.addr)) {
+ pj_sockaddr tmp_addr;
+ pj_gethostip(af, &tmp_addr);
+ pj_sockaddr_copy_addr(&relay->hkey.addr, &tmp_addr);
+ }
+
+ /* Init ioqueue */
+ pj_bzero(&icb, sizeof(icb));
+ icb.on_read_complete = &on_rx_from_peer;
+
+ status = pj_ioqueue_register_sock(pool, srv->core.ioqueue, relay->tp.sock,
+ relay, &icb, &relay->tp.key);
+ if (status != PJ_SUCCESS) {
+ PJ_LOG(4,(THIS_FILE, "pj_ioqueue_register_sock() failed: err %d",
+ status));
+ pj_sock_close(relay->tp.sock);
+ relay->tp.sock = PJ_INVALID_SOCKET;
+ return status;
+ }
+
+ /* Kick off pending read operation */
+ pj_ioqueue_op_key_init(&relay->tp.read_key, sizeof(relay->tp.read_key));
+ on_rx_from_peer(relay->tp.key, &relay->tp.read_key, 0);
+
+ /* Done */
+ return PJ_SUCCESS;
+}
+
+/* Create and send error response */
+static void send_reply_err(pj_turn_allocation *alloc,
+ const pj_stun_rx_data *rdata,
+ pj_bool_t cache,
+ int code, const char *errmsg)
+{
+ pj_status_t status;
+
+ status = pj_stun_session_respond(alloc->sess, rdata, code, errmsg, NULL,
+ cache, &alloc->hkey.clt_addr,
+ pj_sockaddr_get_len(&alloc->hkey.clt_addr.addr));
+ if (status != PJ_SUCCESS) {
+ alloc_err(alloc, "Error sending STUN error response", status);
+ return;
+ }
+}
+
+/* Create and send successful response */
+static void send_reply_ok(pj_turn_allocation *alloc,
+ const pj_stun_rx_data *rdata)
+{
+ pj_status_t status;
+ unsigned interval;
+ pj_stun_tx_data *tdata;
+
+ status = pj_stun_session_create_res(alloc->sess, rdata, 0, NULL, &tdata);
+ if (status != PJ_SUCCESS) {
+ alloc_err(alloc, "Error creating STUN success response", status);
+ return;
+ }
+
+ /* Calculate time to expiration */
+ if (alloc->relay.lifetime != 0) {
+ pj_time_val now;
+ pj_gettimeofday(&now);
+ interval = alloc->relay.expiry.sec - now.sec;
+ } else {
+ interval = 0;
+ }
+
+ /* Add LIFETIME if this is not ChannelBind. */
+ if (PJ_STUN_GET_METHOD(tdata->msg->hdr.type)!=PJ_STUN_CHANNEL_BIND_METHOD){
+ pj_stun_msg_add_uint_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_LIFETIME, interval);
+
+ /* Add BANDWIDTH if lifetime is not zero */
+ if (interval != 0) {
+ pj_stun_msg_add_uint_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_BANDWIDTH,
+ alloc->bandwidth);
+ }
+ }
+
+ status = pj_stun_session_send_msg(alloc->sess, NULL, PJ_TRUE,
+ PJ_FALSE, &alloc->hkey.clt_addr,
+ pj_sockaddr_get_len(&alloc->hkey.clt_addr),
+ tdata);
+ if (status != PJ_SUCCESS) {
+ alloc_err(alloc, "Error sending STUN success response", status);
+ return;
+ }
+}
+
+
+/* Create new permission */
+static pj_turn_permission *create_permission(pj_turn_allocation *alloc,
+ const pj_sockaddr_t *peer_addr,
+ unsigned addr_len)
+{
+ pj_turn_permission *perm;
+
+ perm = PJ_POOL_ZALLOC_T(alloc->pool, pj_turn_permission);
+ pj_memcpy(&perm->hkey.peer_addr, peer_addr, addr_len);
+
+ perm->allocation = alloc;
+ perm->channel = PJ_TURN_INVALID_CHANNEL;
+
+ pj_gettimeofday(&perm->expiry);
+ perm->expiry.sec += PJ_TURN_PERM_TIMEOUT;
+
+ /* Register to hash table (only the address part!) */
+ pj_hash_set(alloc->pool, alloc->peer_table,
+ pj_sockaddr_get_addr(&perm->hkey.peer_addr),
+ pj_sockaddr_get_addr_len(&perm->hkey.peer_addr), 0, perm);
+
+ return perm;
+}
+
+/* Check if a permission isn't expired. Return NULL if expired. */
+static pj_turn_permission *check_permission_expiry(pj_turn_permission *perm)
+{
+ pj_turn_allocation *alloc = perm->allocation;
+ pj_time_val now;
+
+ pj_gettimeofday(&now);
+ if (PJ_TIME_VAL_GT(perm->expiry, now)) {
+ /* Permission has not expired */
+ return perm;
+ }
+
+ /* Remove from permission hash table */
+ pj_hash_set(NULL, alloc->peer_table,
+ pj_sockaddr_get_addr(&perm->hkey.peer_addr),
+ pj_sockaddr_get_addr_len(&perm->hkey.peer_addr), 0, NULL);
+
+ /* Remove from channel hash table, if assigned a channel number */
+ if (perm->channel != PJ_TURN_INVALID_CHANNEL) {
+ pj_hash_set(NULL, alloc->ch_table, &perm->channel,
+ sizeof(perm->channel), 0, NULL);
+ }
+
+ return NULL;
+}
+
+/* Lookup permission in hash table by the peer address */
+static pj_turn_permission*
+lookup_permission_by_addr(pj_turn_allocation *alloc,
+ const pj_sockaddr_t *peer_addr,
+ unsigned addr_len)
+{
+ pj_turn_permission *perm;
+
+ PJ_UNUSED_ARG(addr_len);
+
+ /* Lookup in peer hash table */
+ perm = (pj_turn_permission*)
+ pj_hash_get(alloc->peer_table,
+ pj_sockaddr_get_addr(peer_addr),
+ pj_sockaddr_get_addr_len(peer_addr),
+ NULL);
+ return perm ? check_permission_expiry(perm) : NULL;
+}
+
+/* Lookup permission in hash table by the channel number */
+static pj_turn_permission*
+lookup_permission_by_chnum(pj_turn_allocation *alloc,
+ unsigned chnum)
+{
+ pj_uint16_t chnum16 = (pj_uint16_t)chnum;
+ pj_turn_permission *perm;
+
+ /* Lookup in peer hash table */
+ perm = (pj_turn_permission*) pj_hash_get(alloc->ch_table, &chnum16,
+ sizeof(chnum16), NULL);
+ return perm ? check_permission_expiry(perm) : NULL;
+}
+
+/* Update permission because of data from client to peer.
+ * Return PJ_TRUE is permission is found.
+ */
+static pj_bool_t refresh_permission(pj_turn_permission *perm)
+{
+ pj_gettimeofday(&perm->expiry);
+ if (perm->channel == PJ_TURN_INVALID_CHANNEL)
+ perm->expiry.sec += PJ_TURN_PERM_TIMEOUT;
+ else
+ perm->expiry.sec += PJ_TURN_CHANNEL_TIMEOUT;
+ return PJ_TRUE;
+}
+
+/*
+ * Handle incoming packet from client. This would have been called by
+ * server upon receiving packet from a listener.
+ */
+PJ_DEF(void) pj_turn_allocation_on_rx_client_pkt(pj_turn_allocation *alloc,
+ pj_turn_pkt *pkt)
+{
+ pj_bool_t is_stun;
+ pj_status_t status;
+
+ /* Lock this allocation */
+ pj_lock_acquire(alloc->lock);
+
+ /* Quickly check if this is STUN message */
+ is_stun = ((*((pj_uint8_t*)pkt->pkt) & 0xC0) == 0);
+
+ if (is_stun) {
+ /*
+ * This could be an incoming STUN requests or indications.
+ * Pass this through to the STUN session, which will call
+ * our stun_on_rx_request() or stun_on_rx_indication()
+ * callbacks.
+ *
+ * Note: currently it is necessary to specify the
+ * PJ_STUN_NO_FINGERPRINT_CHECK otherwise the FINGERPRINT
+ * attribute inside STUN Send Indication message will mess up
+ * with fingerprint checking.
+ */
+ unsigned options = PJ_STUN_CHECK_PACKET | PJ_STUN_NO_FINGERPRINT_CHECK;
+ pj_size_t parsed_len = 0;
+
+ if (pkt->transport->listener->tp_type == PJ_TURN_TP_UDP)
+ options |= PJ_STUN_IS_DATAGRAM;
+
+ status = pj_stun_session_on_rx_pkt(alloc->sess, pkt->pkt, pkt->len,
+ options, NULL, &parsed_len,
+ &pkt->src.clt_addr,
+ pkt->src_addr_len);
+
+ if (pkt->transport->listener->tp_type == PJ_TURN_TP_UDP) {
+ pkt->len = 0;
+ } else if (parsed_len > 0) {
+ if (parsed_len == pkt->len) {
+ pkt->len = 0;
+ } else {
+ pj_memmove(pkt->pkt, pkt->pkt+parsed_len,
+ pkt->len - parsed_len);
+ pkt->len -= parsed_len;
+ }
+ }
+
+ if (status != PJ_SUCCESS) {
+ alloc_err(alloc, "Error handling STUN packet", status);
+ goto on_return;
+ }
+
+ } else {
+ /*
+ * This is not a STUN packet, must be ChannelData packet.
+ */
+ pj_turn_channel_data *cd = (pj_turn_channel_data*)pkt->pkt;
+ pj_turn_permission *perm;
+ pj_ssize_t len;
+
+ pj_assert(sizeof(*cd)==4);
+
+ /* For UDP check the packet length */
+ if (alloc->transport->listener->tp_type == PJ_TURN_TP_UDP) {
+ if (pkt->len < pj_ntohs(cd->length)+sizeof(*cd)) {
+ PJ_LOG(4,(alloc->obj_name,
+ "ChannelData from %s discarded: UDP size error",
+ alloc->info));
+ goto on_return;
+ }
+ } else {
+ pj_assert(!"Unsupported transport");
+ goto on_return;
+ }
+
+ perm = lookup_permission_by_chnum(alloc, pj_ntohs(cd->ch_number));
+ if (!perm) {
+ /* Discard */
+ PJ_LOG(4,(alloc->obj_name,
+ "ChannelData from %s discarded: ch#0x%x not found",
+ alloc->info, pj_ntohs(cd->ch_number)));
+ goto on_return;
+ }
+
+ /* Relay the data */
+ len = pj_ntohs(cd->length);
+ pj_sock_sendto(alloc->relay.tp.sock, cd+1, &len, 0,
+ &perm->hkey.peer_addr,
+ pj_sockaddr_get_len(&perm->hkey.peer_addr));
+
+ /* Refresh permission */
+ refresh_permission(perm);
+ }
+
+on_return:
+ /* Release lock */
+ pj_lock_release(alloc->lock);
+}
+
+
+/*
+ * Handle incoming packet from peer. This function is called by
+ * on_rx_from_peer().
+ */
+static void handle_peer_pkt(pj_turn_allocation *alloc,
+ pj_turn_relay_res *rel,
+ char *pkt, pj_size_t len,
+ const pj_sockaddr *src_addr)
+{
+ pj_turn_permission *perm;
+
+ /* Lookup permission */
+ perm = lookup_permission_by_addr(alloc, src_addr,
+ pj_sockaddr_get_len(src_addr));
+ if (perm == NULL) {
+ /* No permission, discard data */
+ return;
+ }
+
+ /* Send Data Indication or ChannelData, depends on whether
+ * this permission is attached to a channel number.
+ */
+ if (perm->channel != PJ_TURN_INVALID_CHANNEL) {
+ /* Send ChannelData */
+ pj_turn_channel_data *cd = (pj_turn_channel_data*)rel->tp.tx_pkt;
+
+ if (len > PJ_TURN_MAX_PKT_LEN) {
+ char peer_addr[80];
+ pj_sockaddr_print(src_addr, peer_addr, sizeof(peer_addr), 3);
+ PJ_LOG(4,(alloc->obj_name, "Client %s: discarded data from %s "
+ "because it's too long (%d bytes)",
+ alloc->info, peer_addr, len));
+ return;
+ }
+
+ /* Init header */
+ cd->ch_number = pj_htons(perm->channel);
+ cd->length = pj_htons((pj_uint16_t)len);
+
+ /* Copy data */
+ pj_memcpy(rel->tp.tx_pkt+sizeof(pj_turn_channel_data), pkt, len);
+
+ /* Send to client */
+ alloc->transport->sendto(alloc->transport, rel->tp.tx_pkt,
+ len+sizeof(pj_turn_channel_data), 0,
+ &alloc->hkey.clt_addr,
+ pj_sockaddr_get_len(&alloc->hkey.clt_addr));
+ } else {
+ /* Send Data Indication */
+ pj_stun_tx_data *tdata;
+ pj_status_t status;
+
+ status = pj_stun_session_create_ind(alloc->sess,
+ PJ_STUN_DATA_INDICATION, &tdata);
+ if (status != PJ_SUCCESS) {
+ alloc_err(alloc, "Error creating Data indication", status);
+ return;
+ }
+
+ pj_stun_msg_add_sockaddr_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_XOR_PEER_ADDR, PJ_TRUE,
+ src_addr, pj_sockaddr_get_len(src_addr));
+ pj_stun_msg_add_binary_attr(tdata->pool, tdata->msg,
+ PJ_STUN_ATTR_DATA,
+ (const pj_uint8_t*)pkt, len);
+
+ pj_stun_session_send_msg(alloc->sess, NULL, PJ_FALSE,
+ PJ_FALSE, &alloc->hkey.clt_addr,
+ pj_sockaddr_get_len(&alloc->hkey.clt_addr),
+ tdata);
+ }
+}
+
+/*
+ * ioqueue notification on RX packets from the relay socket.
+ */
+static void on_rx_from_peer(pj_ioqueue_key_t *key,
+ pj_ioqueue_op_key_t *op_key,
+ pj_ssize_t bytes_read)
+{
+ pj_turn_relay_res *rel;
+ pj_status_t status;
+
+ rel = (pj_turn_relay_res*) pj_ioqueue_get_user_data(key);
+
+ /* Lock the allocation */
+ pj_lock_acquire(rel->allocation->lock);
+
+ do {
+ if (bytes_read > 0) {
+ handle_peer_pkt(rel->allocation, rel, rel->tp.rx_pkt,
+ bytes_read, &rel->tp.src_addr);
+ }
+
+ /* Read next packet */
+ bytes_read = sizeof(rel->tp.rx_pkt);
+ rel->tp.src_addr_len = sizeof(rel->tp.src_addr);
+ status = pj_ioqueue_recvfrom(key, op_key,
+ rel->tp.rx_pkt, &bytes_read, 0,
+ &rel->tp.src_addr,
+ &rel->tp.src_addr_len);
+
+ if (status != PJ_EPENDING && status != PJ_SUCCESS)
+ bytes_read = -status;
+
+ } while (status != PJ_EPENDING && status != PJ_ECANCELLED);
+
+ /* Release allocation lock */
+ pj_lock_release(rel->allocation->lock);
+}
+
+/*
+ * Callback notification from STUN session when it wants to send
+ * a STUN message towards the client.
+ */
+static pj_status_t stun_on_send_msg(pj_stun_session *sess,
+ void *token,
+ const void *pkt,
+ pj_size_t pkt_size,
+ const pj_sockaddr_t *dst_addr,
+ unsigned addr_len)
+{
+ pj_turn_allocation *alloc;
+
+ PJ_UNUSED_ARG(token);
+
+ alloc = (pj_turn_allocation*) pj_stun_session_get_user_data(sess);
+
+ return alloc->transport->sendto(alloc->transport, pkt, pkt_size, 0,
+ dst_addr, addr_len);
+}
+
+/*
+ * Callback notification from STUN session when it receives STUN
+ * requests. This callback was trigger by STUN incoming message
+ * processing in pj_turn_allocation_on_rx_client_pkt().
+ */
+static pj_status_t stun_on_rx_request(pj_stun_session *sess,
+ const pj_uint8_t *pkt,
+ unsigned pkt_len,
+ const pj_stun_rx_data *rdata,
+ void *token,
+ const pj_sockaddr_t *src_addr,
+ unsigned src_addr_len)
+{
+ const pj_stun_msg *msg = rdata->msg;
+ pj_turn_allocation *alloc;
+
+ PJ_UNUSED_ARG(pkt);
+ PJ_UNUSED_ARG(pkt_len);
+ PJ_UNUSED_ARG(token);
+ PJ_UNUSED_ARG(src_addr);
+ PJ_UNUSED_ARG(src_addr_len);
+
+ alloc = (pj_turn_allocation*) pj_stun_session_get_user_data(sess);
+
+ /* Refuse to serve any request if we've been shutdown */
+ if (alloc->relay.lifetime == 0) {
+ /* Reject with 437 if we're shutting down */
+ send_reply_err(alloc, rdata, PJ_TRUE,
+ PJ_STUN_SC_ALLOCATION_MISMATCH, NULL);
+ return PJ_SUCCESS;
+ }
+
+ if (msg->hdr.type == PJ_STUN_REFRESH_REQUEST) {
+ /*
+ * Handle REFRESH request
+ */
+ pj_stun_lifetime_attr *lifetime;
+ pj_stun_bandwidth_attr *bandwidth;
+
+ /* Get LIFETIME attribute */
+ lifetime = (pj_stun_lifetime_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_LIFETIME, 0);
+
+ /* Get BANDWIDTH attribute */
+ bandwidth = (pj_stun_bandwidth_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_BANDWIDTH, 0);
+
+ if (lifetime && lifetime->value==0) {
+ /*
+ * This is deallocation request.
+ */
+ alloc->relay.lifetime = 0;
+
+ /* Respond first */
+ send_reply_ok(alloc, rdata);
+
+ /* Shutdown allocation */
+ PJ_LOG(4,(alloc->obj_name,
+ "Client %s request to dealloc, shutting down",
+ alloc->info));
+
+ alloc_shutdown(alloc);
+
+ } else {
+ /*
+ * This is a refresh request.
+ */
+
+ /* Update lifetime */
+ if (lifetime) {
+ alloc->relay.lifetime = lifetime->value;
+ }
+
+ /* Update bandwidth */
+ // TODO:
+
+ /* Update expiration timer */
+ resched_timeout(alloc);
+
+ /* Send reply */
+ send_reply_ok(alloc, rdata);
+ }
+
+ } else if (msg->hdr.type == PJ_STUN_CHANNEL_BIND_REQUEST) {
+ /*
+ * ChannelBind request.
+ */
+ pj_stun_channel_number_attr *ch_attr;
+ pj_stun_xor_peer_addr_attr *peer_attr;
+ pj_turn_permission *p1, *p2;
+
+ ch_attr = (pj_stun_channel_number_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_CHANNEL_NUMBER, 0);
+ peer_attr = (pj_stun_xor_peer_addr_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_XOR_PEER_ADDR, 0);
+
+ if (!ch_attr || !peer_attr) {
+ send_reply_err(alloc, rdata, PJ_TRUE,
+ PJ_STUN_SC_BAD_REQUEST, NULL);
+ return PJ_SUCCESS;
+ }
+
+ /* Find permission with the channel number */
+ p1 = lookup_permission_by_chnum(alloc, PJ_STUN_GET_CH_NB(ch_attr->value));
+
+ /* If permission is found, this is supposed to be a channel bind
+ * refresh. Make sure it's for the same peer.
+ */
+ if (p1) {
+ if (pj_sockaddr_cmp(&p1->hkey.peer_addr, &peer_attr->sockaddr)) {
+ /* Address mismatch. Send 400 */
+ send_reply_err(alloc, rdata, PJ_TRUE,
+ PJ_STUN_SC_BAD_REQUEST,
+ "Peer address mismatch");
+ return PJ_SUCCESS;
+ }
+
+ /* Refresh permission */
+ refresh_permission(p1);
+
+ /* Send response */
+ send_reply_ok(alloc, rdata);
+
+ /* Done */
+ return PJ_SUCCESS;
+ }
+
+ /* If permission is not found, create a new one. Make sure the peer
+ * has not alreadyy assigned with a channel number.
+ */
+ p2 = lookup_permission_by_addr(alloc, &peer_attr->sockaddr,
+ pj_sockaddr_get_len(&peer_attr->sockaddr));
+ if (p2 && p2->channel != PJ_TURN_INVALID_CHANNEL) {
+ send_reply_err(alloc, rdata, PJ_TRUE, PJ_STUN_SC_BAD_REQUEST,
+ "Peer address already assigned a channel number");
+ return PJ_SUCCESS;
+ }
+
+ /* Create permission if it doesn't exist */
+ if (!p2) {
+ p2 = create_permission(alloc, &peer_attr->sockaddr,
+ pj_sockaddr_get_len(&peer_attr->sockaddr));
+ if (!p2)
+ return PJ_SUCCESS;
+ }
+
+ /* Assign channel number to permission */
+ p2->channel = PJ_STUN_GET_CH_NB(ch_attr->value);
+
+ /* Register to hash table */
+ pj_assert(sizeof(p2->channel==2));
+ pj_hash_set(alloc->pool, alloc->ch_table, &p2->channel,
+ sizeof(p2->channel), 0, p2);
+
+ /* Update */
+ refresh_permission(p2);
+
+ /* Reply */
+ send_reply_ok(alloc, rdata);
+
+ return PJ_SUCCESS;
+
+ } else if (msg->hdr.type == PJ_STUN_ALLOCATE_REQUEST) {
+
+ /* Respond with 437 (section 6.3 turn-07) */
+ send_reply_err(alloc, rdata, PJ_TRUE, PJ_STUN_SC_ALLOCATION_MISMATCH,
+ NULL);
+
+ } else {
+
+ /* Respond with Bad Request? */
+ send_reply_err(alloc, rdata, PJ_TRUE, PJ_STUN_SC_BAD_REQUEST, NULL);
+
+ }
+
+ return PJ_SUCCESS;
+}
+
+/*
+ * Callback notification from STUN session when it receives STUN
+ * indications. This callback was trigger by STUN incoming message
+ * processing in pj_turn_allocation_on_rx_client_pkt().
+ */
+static pj_status_t stun_on_rx_indication(pj_stun_session *sess,
+ const pj_uint8_t *pkt,
+ unsigned pkt_len,
+ const pj_stun_msg *msg,
+ void *token,
+ const pj_sockaddr_t *src_addr,
+ unsigned src_addr_len)
+{
+ pj_stun_xor_peer_addr_attr *peer_attr;
+ pj_stun_data_attr *data_attr;
+ pj_turn_allocation *alloc;
+ pj_turn_permission *perm;
+ pj_ssize_t len;
+
+ PJ_UNUSED_ARG(pkt);
+ PJ_UNUSED_ARG(pkt_len);
+ PJ_UNUSED_ARG(token);
+ PJ_UNUSED_ARG(src_addr);
+ PJ_UNUSED_ARG(src_addr_len);
+
+ alloc = (pj_turn_allocation*) pj_stun_session_get_user_data(sess);
+
+ /* Only expect Send Indication */
+ if (msg->hdr.type != PJ_STUN_SEND_INDICATION) {
+ /* Ignore */
+ return PJ_SUCCESS;
+ }
+
+ /* Get XOR-PEER-ADDRESS attribute */
+ peer_attr = (pj_stun_xor_peer_addr_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_XOR_PEER_ADDR, 0);
+
+ /* MUST have XOR-PEER-ADDRESS attribute */
+ if (!peer_attr)
+ return PJ_SUCCESS;
+
+ /* Get DATA attribute */
+ data_attr = (pj_stun_data_attr*)
+ pj_stun_msg_find_attr(msg, PJ_STUN_ATTR_DATA, 0);
+
+ /* Create/update/refresh the permission */
+ perm = lookup_permission_by_addr(alloc, &peer_attr->sockaddr,
+ pj_sockaddr_get_len(&peer_attr->sockaddr));
+ if (perm == NULL) {
+ perm = create_permission(alloc, &peer_attr->sockaddr,
+ pj_sockaddr_get_len(&peer_attr->sockaddr));
+ }
+ refresh_permission(perm);
+
+ /* Return if we don't have data */
+ if (data_attr == NULL)
+ return PJ_SUCCESS;
+
+ /* Relay the data to peer */
+ len = data_attr->length;
+ pj_sock_sendto(alloc->relay.tp.sock, data_attr->data,
+ &len, 0, &peer_attr->sockaddr,
+ pj_sockaddr_get_len(&peer_attr->sockaddr));
+
+ return PJ_SUCCESS;
+}
+
+