diff options
Diffstat (limited to 'pjnath/src/pjnath-test/server.c')
| -rw-r--r-- | pjnath/src/pjnath-test/server.c | 754 |
1 files changed, 754 insertions, 0 deletions
diff --git a/pjnath/src/pjnath-test/server.c b/pjnath/src/pjnath-test/server.c new file mode 100644 index 0000000..4d8565e --- /dev/null +++ b/pjnath/src/pjnath-test/server.c @@ -0,0 +1,754 @@ +/* $Id: server.c 3553 2011-05-05 06:14:19Z nanang $ */ +/* + * 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 "server.h" +#include "test.h" + +#define THIS_FILE "server.c" +#define MAX_STUN_PKT 1500 +#define TURN_NONCE "thenonce" + +static pj_bool_t stun_on_data_recvfrom(pj_activesock_t *asock, + void *data, + pj_size_t size, + const pj_sockaddr_t *src_addr, + int addr_len, + pj_status_t status); +static pj_bool_t turn_on_data_recvfrom(pj_activesock_t *asock, + void *data, + pj_size_t size, + const pj_sockaddr_t *src_addr, + int addr_len, + pj_status_t status); +static pj_bool_t alloc_on_data_recvfrom(pj_activesock_t *asock, + void *data, + pj_size_t size, + const pj_sockaddr_t *src_addr, + int addr_len, + pj_status_t status); + +pj_status_t create_test_server(pj_stun_config *stun_cfg, + pj_uint32_t flags, + const char *domain, + test_server **p_test_srv) +{ + pj_pool_t *pool; + test_server *test_srv; + pj_sockaddr hostip; + char strbuf[100]; + pj_status_t status; + + PJ_ASSERT_RETURN(stun_cfg && domain && p_test_srv, PJ_EINVAL); + + status = pj_gethostip(pj_AF_INET(), &hostip); + if (status != PJ_SUCCESS) + return status; + + pool = pj_pool_create(mem, THIS_FILE, 512, 512, NULL); + test_srv = (test_server*) PJ_POOL_ZALLOC_T(pool, test_server); + test_srv->pool = pool; + test_srv->flags = flags; + test_srv->stun_cfg = stun_cfg; + + pj_strdup2(pool, &test_srv->domain, domain); + test_srv->username = pj_str(TURN_USERNAME); + test_srv->passwd = pj_str(TURN_PASSWD); + + pj_ioqueue_op_key_init(&test_srv->send_key, sizeof(test_srv->send_key)); + + if (flags & CREATE_DNS_SERVER) { + status = pj_dns_server_create(mem, test_srv->stun_cfg->ioqueue, + pj_AF_INET(), DNS_SERVER_PORT, + 0, &test_srv->dns_server); + if (status != PJ_SUCCESS) { + destroy_test_server(test_srv); + return status; + } + + /* Add DNS A record for the domain, for fallback */ + if (flags & CREATE_A_RECORD_FOR_DOMAIN) { + pj_dns_parsed_rr rr; + pj_str_t res_name; + pj_in_addr ip_addr; + + pj_strdup2(pool, &res_name, domain); + ip_addr = hostip.ipv4.sin_addr; + pj_dns_init_a_rr(&rr, &res_name, PJ_DNS_CLASS_IN, 60, &ip_addr); + pj_dns_server_add_rec(test_srv->dns_server, 1, &rr); + } + + } + + if (flags & CREATE_STUN_SERVER) { + pj_activesock_cb stun_sock_cb; + pj_sockaddr bound_addr; + + pj_bzero(&stun_sock_cb, sizeof(stun_sock_cb)); + stun_sock_cb.on_data_recvfrom = &stun_on_data_recvfrom; + + pj_sockaddr_in_init(&bound_addr.ipv4, NULL, STUN_SERVER_PORT); + + status = pj_activesock_create_udp(pool, &bound_addr, NULL, + test_srv->stun_cfg->ioqueue, + &stun_sock_cb, test_srv, + &test_srv->stun_sock, NULL); + if (status != PJ_SUCCESS) { + destroy_test_server(test_srv); + return status; + } + + status = pj_activesock_start_recvfrom(test_srv->stun_sock, pool, + MAX_STUN_PKT, 0); + if (status != PJ_SUCCESS) { + destroy_test_server(test_srv); + return status; + } + + if (test_srv->dns_server && (flags & CREATE_STUN_SERVER_DNS_SRV)) { + pj_str_t res_name, target; + pj_dns_parsed_rr rr; + pj_in_addr ip_addr; + + /* Add DNS entries: + * _stun._udp.domain 60 IN SRV 0 0 PORT stun.domain. + * stun.domain IN A 127.0.0.1 + */ + pj_ansi_snprintf(strbuf, sizeof(strbuf), + "_stun._udp.%s", domain); + pj_strdup2(pool, &res_name, strbuf); + pj_ansi_snprintf(strbuf, sizeof(strbuf), + "stun.%s", domain); + pj_strdup2(pool, &target, strbuf); + pj_dns_init_srv_rr(&rr, &res_name, PJ_DNS_CLASS_IN, 60, 0, 0, + STUN_SERVER_PORT, &target); + pj_dns_server_add_rec(test_srv->dns_server, 1, &rr); + + res_name = target; + ip_addr = hostip.ipv4.sin_addr; + pj_dns_init_a_rr(&rr, &res_name, PJ_DNS_CLASS_IN, 60, &ip_addr); + pj_dns_server_add_rec(test_srv->dns_server, 1, &rr); + } + + } + + if (flags & CREATE_TURN_SERVER) { + pj_activesock_cb turn_sock_cb; + pj_sockaddr bound_addr; + + pj_bzero(&turn_sock_cb, sizeof(turn_sock_cb)); + turn_sock_cb.on_data_recvfrom = &turn_on_data_recvfrom; + + pj_sockaddr_in_init(&bound_addr.ipv4, NULL, TURN_SERVER_PORT); + + status = pj_activesock_create_udp(pool, &bound_addr, NULL, + test_srv->stun_cfg->ioqueue, + &turn_sock_cb, test_srv, + &test_srv->turn_sock, NULL); + if (status != PJ_SUCCESS) { + destroy_test_server(test_srv); + return status; + } + + status = pj_activesock_start_recvfrom(test_srv->turn_sock, pool, + MAX_STUN_PKT, 0); + if (status != PJ_SUCCESS) { + destroy_test_server(test_srv); + return status; + } + + if (test_srv->dns_server && (flags & CREATE_TURN_SERVER_DNS_SRV)) { + pj_str_t res_name, target; + pj_dns_parsed_rr rr; + pj_in_addr ip_addr; + + /* Add DNS entries: + * _turn._udp.domain 60 IN SRV 0 0 PORT turn.domain. + * turn.domain IN A 127.0.0.1 + */ + pj_ansi_snprintf(strbuf, sizeof(strbuf), + "_turn._udp.%s", domain); + pj_strdup2(pool, &res_name, strbuf); + pj_ansi_snprintf(strbuf, sizeof(strbuf), + "turn.%s", domain); + pj_strdup2(pool, &target, strbuf); + pj_dns_init_srv_rr(&rr, &res_name, PJ_DNS_CLASS_IN, 60, 0, 0, + TURN_SERVER_PORT, &target); + pj_dns_server_add_rec(test_srv->dns_server, 1, &rr); + + res_name = target; + ip_addr = hostip.ipv4.sin_addr; + pj_dns_init_a_rr(&rr, &res_name, PJ_DNS_CLASS_IN, 60, &ip_addr); + pj_dns_server_add_rec(test_srv->dns_server, 1, &rr); + } + } + + *p_test_srv = test_srv; + return PJ_SUCCESS; +} + +void destroy_test_server(test_server *test_srv) +{ + unsigned i; + + PJ_ASSERT_ON_FAIL(test_srv, return); + + for (i=0; i<test_srv->turn_alloc_cnt; ++i) { + pj_activesock_close(test_srv->turn_alloc[i].sock); + pj_pool_release(test_srv->turn_alloc[i].pool); + } + test_srv->turn_alloc_cnt = 0; + + if (test_srv->turn_sock) { + pj_activesock_close(test_srv->turn_sock); + test_srv->turn_sock = NULL; + } + + if (test_srv->stun_sock) { + pj_activesock_close(test_srv->stun_sock); + test_srv->stun_sock = NULL; + } + + if (test_srv->dns_server) { + pj_dns_server_destroy(test_srv->dns_server); + test_srv->dns_server = NULL; + } + + if (test_srv->pool) { + pj_pool_t *pool = test_srv->pool; + test_srv->pool = NULL; + pj_pool_release(pool); + } +} + +static pj_bool_t stun_on_data_recvfrom(pj_activesock_t *asock, + void *data, + pj_size_t size, + const pj_sockaddr_t *src_addr, + int addr_len, + pj_status_t status) +{ + test_server *test_srv; + pj_stun_msg *req, *resp = NULL; + pj_pool_t *pool; + pj_ssize_t len; + + if (status != PJ_SUCCESS) + return PJ_TRUE; + + test_srv = (test_server*) pj_activesock_get_user_data(asock); + pool = pj_pool_create(test_srv->stun_cfg->pf, NULL, 512, 512, NULL); + + status = pj_stun_msg_decode(pool, (pj_uint8_t*)data, size, + PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET, + &req, NULL, NULL); + if (status != PJ_SUCCESS) + goto on_return; + + if (req->hdr.type != PJ_STUN_BINDING_REQUEST) { + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_BAD_REQUEST, + NULL, &resp); + goto send_pkt; + } + + status = pj_stun_msg_create_response(pool, req, 0, NULL, &resp); + if (status != PJ_SUCCESS) + goto on_return; + + pj_stun_msg_add_sockaddr_attr(pool, resp, PJ_STUN_ATTR_XOR_MAPPED_ADDR, + PJ_TRUE, src_addr, addr_len); + +send_pkt: + status = pj_stun_msg_encode(resp, (pj_uint8_t*)data, MAX_STUN_PKT, + 0, NULL, &size); + if (status != PJ_SUCCESS) + goto on_return; + + len = size; + status = pj_activesock_sendto(asock, &test_srv->send_key, data, &len, + 0, src_addr, addr_len); + +on_return: + pj_pool_release(pool); + return PJ_TRUE; +} + + +static pj_stun_msg* create_success_response(test_server *test_srv, + turn_allocation *alloc, + pj_stun_msg *req, + pj_pool_t *pool, + unsigned lifetime, + pj_str_t *auth_key) +{ + pj_stun_msg *resp; + pj_str_t tmp; + pj_status_t status; + + /* Create response */ + status = pj_stun_msg_create_response(pool, req, 0, NULL, &resp); + if (status != PJ_SUCCESS) { + return NULL; + } + /* Add TURN_NONCE */ + pj_stun_msg_add_string_attr(pool, resp, PJ_STUN_ATTR_NONCE, pj_cstr(&tmp, TURN_NONCE)); + /* Add LIFETIME */ + pj_stun_msg_add_uint_attr(pool, resp, PJ_STUN_ATTR_LIFETIME, lifetime); + if (lifetime != 0) { + /* Add XOR-RELAYED-ADDRESS */ + pj_stun_msg_add_sockaddr_attr(pool, resp, PJ_STUN_ATTR_XOR_RELAYED_ADDR, PJ_TRUE, &alloc->alloc_addr, + pj_sockaddr_get_len(&alloc->alloc_addr)); + /* Add XOR-MAPPED-ADDRESS */ + pj_stun_msg_add_sockaddr_attr(pool, resp, PJ_STUN_ATTR_XOR_MAPPED_ADDR, PJ_TRUE, &alloc->client_addr, + pj_sockaddr_get_len(&alloc->client_addr)); + } + + /* Add blank MESSAGE-INTEGRITY */ + pj_stun_msg_add_msgint_attr(pool, resp); + + /* Set auth key */ + pj_stun_create_key(pool, auth_key, &test_srv->domain, &test_srv->username, + PJ_STUN_PASSWD_PLAIN, &test_srv->passwd); + + return resp; +} + + +static pj_bool_t turn_on_data_recvfrom(pj_activesock_t *asock, + void *data, + pj_size_t size, + const pj_sockaddr_t *src_addr, + int addr_len, + pj_status_t status) +{ + test_server *test_srv; + pj_pool_t *pool; + turn_allocation *alloc; + pj_stun_msg *req, *resp = NULL; + pj_str_t auth_key = { NULL, 0 }; + char client_info[PJ_INET6_ADDRSTRLEN+10]; + unsigned i; + pj_ssize_t len; + + if (status != PJ_SUCCESS) + return PJ_TRUE; + + pj_sockaddr_print(src_addr, client_info, sizeof(client_info), 3); + + test_srv = (test_server*) pj_activesock_get_user_data(asock); + pool = pj_pool_create(test_srv->stun_cfg->pf, NULL, 512, 512, NULL); + + /* Find the client */ + for (i=0; i<test_srv->turn_alloc_cnt; i++) { + if (pj_sockaddr_cmp(&test_srv->turn_alloc[i].client_addr, src_addr)==0) + break; + } + + + if (pj_stun_msg_check((pj_uint8_t*)data, size, PJ_STUN_NO_FINGERPRINT_CHECK)!=PJ_SUCCESS) { + /* Not STUN message, this probably is a ChannelData */ + pj_turn_channel_data cd; + const pj_turn_channel_data *pcd = (const pj_turn_channel_data*)data; + pj_ssize_t sent; + + if (i==test_srv->turn_alloc_cnt) { + /* Invalid data */ + PJ_LOG(1,(THIS_FILE, + "TURN Server received strayed data")); + goto on_return; + } + + alloc = &test_srv->turn_alloc[i]; + + cd.ch_number = pj_ntohs(pcd->ch_number); + cd.length = pj_ntohs(pcd->length); + + /* For UDP check the packet length */ + if (size < cd.length+sizeof(cd)) { + PJ_LOG(1,(THIS_FILE, + "TURN Server: ChannelData discarded: UDP size error")); + goto on_return; + } + + /* Lookup peer */ + for (i=0; i<alloc->perm_cnt; ++i) { + if (alloc->chnum[i] == cd.ch_number) + break; + } + + if (i==alloc->perm_cnt) { + PJ_LOG(1,(THIS_FILE, + "TURN Server: ChannelData discarded: invalid channel number")); + goto on_return; + } + + /* Relay the data to peer */ + sent = cd.length; + pj_activesock_sendto(alloc->sock, &alloc->send_key, + pcd+1, &sent, 0, + &alloc->perm[i], + pj_sockaddr_get_len(&alloc->perm[i])); + + /* Done */ + goto on_return; + } + + status = pj_stun_msg_decode(pool, (pj_uint8_t*)data, size, + PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET | + PJ_STUN_NO_FINGERPRINT_CHECK, + &req, NULL, NULL); + if (status != PJ_SUCCESS) { + char errmsg[PJ_ERR_MSG_SIZE]; + pj_strerror(status, errmsg, sizeof(errmsg)); + PJ_LOG(1,("", "STUN message decode error from client %s: %s", client_info, errmsg)); + goto on_return; + } + + if (i==test_srv->turn_alloc_cnt) { + /* New client */ + //pj_str_t ip_addr; + pj_stun_username_attr *uname; + pj_activesock_cb alloc_sock_cb; + turn_allocation *alloc; + + /* Must be Allocate request */ + if (req->hdr.type != PJ_STUN_ALLOCATE_REQUEST) { + PJ_LOG(1,(THIS_FILE, "Invalid %s %s from client %s", + pj_stun_get_method_name(req->hdr.type), + pj_stun_get_class_name(req->hdr.type), + client_info)); + + if (PJ_STUN_IS_REQUEST(req->hdr.type)) + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_BAD_REQUEST, NULL, &resp); + goto send_pkt; + } + + test_srv->turn_stat.rx_allocate_cnt++; + + /* Skip if we're not responding to Allocate request */ + if (!test_srv->turn_respond_allocate) + return PJ_TRUE; + + /* Check if we have too many clients */ + if (test_srv->turn_alloc_cnt == MAX_TURN_ALLOC) { + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_INSUFFICIENT_CAPACITY, NULL, &resp); + goto send_pkt; + } + + /* Get USERNAME attribute */ + uname = (pj_stun_username_attr*) + pj_stun_msg_find_attr(req, PJ_STUN_ATTR_USERNAME, 0); + + /* Reject if it doesn't have MESSAGE-INTEGRITY or USERNAME attributes or + * the user is incorrect + */ + if (pj_stun_msg_find_attr(req, PJ_STUN_ATTR_MESSAGE_INTEGRITY, 0) == NULL || + uname==NULL || pj_stricmp2(&uname->value, TURN_USERNAME) != 0) + { + pj_str_t tmp; + + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_UNAUTHORIZED, NULL, &resp); + pj_stun_msg_add_string_attr(pool, resp, PJ_STUN_ATTR_REALM, &test_srv->domain); + pj_stun_msg_add_string_attr(pool, resp, PJ_STUN_ATTR_NONCE, pj_cstr(&tmp, TURN_NONCE)); + goto send_pkt; + } + + pj_bzero(&alloc_sock_cb, sizeof(alloc_sock_cb)); + alloc_sock_cb.on_data_recvfrom = &alloc_on_data_recvfrom; + + /* Create allocation */ + alloc = &test_srv->turn_alloc[test_srv->turn_alloc_cnt]; + alloc->perm_cnt = 0; + alloc->test_srv = test_srv; + pj_memcpy(&alloc->client_addr, src_addr, addr_len); + pj_ioqueue_op_key_init(&alloc->send_key, sizeof(alloc->send_key)); + + alloc->pool = pj_pool_create(test_srv->stun_cfg->pf, "alloc", 512, 512, NULL); + + /* Create relay socket */ + pj_sockaddr_in_init(&alloc->alloc_addr.ipv4, NULL, 0); + pj_gethostip(pj_AF_INET(), &alloc->alloc_addr); + + status = pj_activesock_create_udp(alloc->pool, &alloc->alloc_addr, NULL, + test_srv->stun_cfg->ioqueue, + &alloc_sock_cb, alloc, + &alloc->sock, &alloc->alloc_addr); + if (status != PJ_SUCCESS) { + pj_pool_release(alloc->pool); + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp); + goto send_pkt; + } + //pj_sockaddr_set_str_addr(pj_AF_INET(), &alloc->alloc_addr, &ip_addr); + + pj_activesock_set_user_data(alloc->sock, alloc); + + status = pj_activesock_start_recvfrom(alloc->sock, alloc->pool, 1500, 0); + if (status != PJ_SUCCESS) { + pj_activesock_close(alloc->sock); + pj_pool_release(alloc->pool); + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp); + goto send_pkt; + } + + /* Create Data indication */ + status = pj_stun_msg_create(alloc->pool, PJ_STUN_DATA_INDICATION, + PJ_STUN_MAGIC, NULL, &alloc->data_ind); + if (status != PJ_SUCCESS) { + pj_activesock_close(alloc->sock); + pj_pool_release(alloc->pool); + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp); + goto send_pkt; + } + pj_stun_msg_add_sockaddr_attr(alloc->pool, alloc->data_ind, + PJ_STUN_ATTR_XOR_PEER_ADDR, PJ_TRUE, + &alloc->alloc_addr, + pj_sockaddr_get_len(&alloc->alloc_addr)); + pj_stun_msg_add_binary_attr(alloc->pool, alloc->data_ind, + PJ_STUN_ATTR_DATA, (pj_uint8_t*)"", 1); + + /* Create response */ + resp = create_success_response(test_srv, alloc, req, pool, 600, &auth_key); + if (resp == NULL) { + pj_activesock_close(alloc->sock); + pj_pool_release(alloc->pool); + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_SERVER_ERROR, NULL, &resp); + goto send_pkt; + } + + ++test_srv->turn_alloc_cnt; + + } else { + alloc = &test_srv->turn_alloc[i]; + + if (req->hdr.type == PJ_STUN_ALLOCATE_REQUEST) { + + test_srv->turn_stat.rx_allocate_cnt++; + + /* Skip if we're not responding to Allocate request */ + if (!test_srv->turn_respond_allocate) + return PJ_TRUE; + + resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key); + + } else if (req->hdr.type == PJ_STUN_REFRESH_REQUEST) { + pj_stun_lifetime_attr *lf_attr; + + test_srv->turn_stat.rx_refresh_cnt++; + + /* Skip if we're not responding to Refresh request */ + if (!test_srv->turn_respond_refresh) + return PJ_TRUE; + + lf_attr = (pj_stun_lifetime_attr*) + pj_stun_msg_find_attr(req, PJ_STUN_ATTR_LIFETIME, 0); + if (lf_attr && lf_attr->value != 0) { + resp = create_success_response(test_srv, alloc, req, pool, 600, &auth_key); + pj_array_erase(test_srv->turn_alloc, sizeof(test_srv->turn_alloc[0]), + test_srv->turn_alloc_cnt, i); + --test_srv->turn_alloc_cnt; + } else + resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key); + } else if (req->hdr.type == PJ_STUN_CREATE_PERM_REQUEST) { + for (i=0; i<req->attr_count; ++i) { + if (req->attr[i]->type == PJ_STUN_ATTR_XOR_PEER_ADDR) { + pj_stun_xor_peer_addr_attr *pa = (pj_stun_xor_peer_addr_attr*)req->attr[i]; + unsigned j; + + for (j=0; j<alloc->perm_cnt; ++j) { + if (pj_sockaddr_cmp(&alloc->perm[j], &pa->sockaddr)==0) + break; + } + + if (j==alloc->perm_cnt && alloc->perm_cnt < MAX_TURN_PERM) { + char peer_info[PJ_INET6_ADDRSTRLEN]; + pj_sockaddr_print(&pa->sockaddr, peer_info, sizeof(peer_info), 3); + + pj_sockaddr_cp(&alloc->perm[alloc->perm_cnt], &pa->sockaddr); + ++alloc->perm_cnt; + + PJ_LOG(5,("", "Permission %s added to client %s, perm_cnt=%d", + peer_info, client_info, alloc->perm_cnt)); + } + + } + } + resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key); + } else if (req->hdr.type == PJ_STUN_SEND_INDICATION) { + pj_stun_xor_peer_addr_attr *pa; + pj_stun_data_attr *da; + + test_srv->turn_stat.rx_send_ind_cnt++; + + pa = (pj_stun_xor_peer_addr_attr*) + pj_stun_msg_find_attr(req, PJ_STUN_ATTR_XOR_PEER_ADDR, 0); + da = (pj_stun_data_attr*) + pj_stun_msg_find_attr(req, PJ_STUN_ATTR_DATA, 0); + if (pa && da) { + unsigned j; + char peer_info[PJ_INET6_ADDRSTRLEN]; + pj_ssize_t sent; + + pj_sockaddr_print(&pa->sockaddr, peer_info, sizeof(peer_info), 3); + + for (j=0; j<alloc->perm_cnt; ++j) { + if (pj_sockaddr_cmp(&alloc->perm[j], &pa->sockaddr)==0) + break; + } + + if (j==alloc->perm_cnt) { + PJ_LOG(5,("", "SendIndication to %s is rejected (no permission)", + peer_info, client_info, alloc->perm_cnt)); + } else { + PJ_LOG(5,(THIS_FILE, "Relaying %d bytes data from client %s to peer %s, " + "perm_cnt=%d", + da->length, client_info, peer_info, alloc->perm_cnt)); + + sent = da->length; + pj_activesock_sendto(alloc->sock, &alloc->send_key, + da->data, &sent, 0, + &pa->sockaddr, + pj_sockaddr_get_len(&pa->sockaddr)); + } + } else { + PJ_LOG(1,(THIS_FILE, "Invalid Send Indication from %s", client_info)); + } + } else if (req->hdr.type == PJ_STUN_CHANNEL_BIND_REQUEST) { + pj_stun_xor_peer_addr_attr *pa; + pj_stun_channel_number_attr *cna; + unsigned j, cn; + + pa = (pj_stun_xor_peer_addr_attr*) + pj_stun_msg_find_attr(req, PJ_STUN_ATTR_XOR_PEER_ADDR, 0); + cna = (pj_stun_channel_number_attr*) + pj_stun_msg_find_attr(req, PJ_STUN_ATTR_CHANNEL_NUMBER, 0); + cn = PJ_STUN_GET_CH_NB(cna->value); + + resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key); + + for (j=0; j<alloc->perm_cnt; ++j) { + if (pj_sockaddr_cmp(&alloc->perm[j], &pa->sockaddr)==0) + break; + } + + if (i==alloc->perm_cnt) { + if (alloc->perm_cnt==MAX_TURN_PERM) { + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_INSUFFICIENT_CAPACITY, NULL, &resp); + goto send_pkt; + } + pj_sockaddr_cp(&alloc->perm[i], &pa->sockaddr); + ++alloc->perm_cnt; + } + alloc->chnum[i] = cn; + + resp = create_success_response(test_srv, alloc, req, pool, 0, &auth_key); + + } else if (PJ_STUN_IS_REQUEST(req->hdr.type)) { + pj_stun_msg_create_response(pool, req, PJ_STUN_SC_BAD_REQUEST, NULL, &resp); + } + } + + +send_pkt: + if (resp) { + status = pj_stun_msg_encode(resp, (pj_uint8_t*)data, MAX_STUN_PKT, + 0, &auth_key, &size); + if (status != PJ_SUCCESS) + goto on_return; + + len = size; + status = pj_activesock_sendto(asock, &test_srv->send_key, data, &len, + 0, src_addr, addr_len); + } + +on_return: + pj_pool_release(pool); + return PJ_TRUE; +} + +/* On received data from peer */ +static pj_bool_t alloc_on_data_recvfrom(pj_activesock_t *asock, + void *data, + pj_size_t size, + const pj_sockaddr_t *src_addr, + int addr_len, + pj_status_t status) +{ + turn_allocation *alloc; + pj_stun_xor_peer_addr_attr *pa; + pj_stun_data_attr *da; + char peer_info[PJ_INET6_ADDRSTRLEN+10]; + char client_info[PJ_INET6_ADDRSTRLEN+10]; + pj_uint8_t buffer[1500]; + pj_ssize_t sent; + unsigned i; + + if (status != PJ_SUCCESS) + return PJ_TRUE; + + alloc = (turn_allocation*) pj_activesock_get_user_data(asock); + + pj_sockaddr_print(&alloc->client_addr, client_info, sizeof(client_info), 3); + pj_sockaddr_print(src_addr, peer_info, sizeof(peer_info), 3); + + /* Check that this peer has a permission */ + for (i=0; i<alloc->perm_cnt; ++i) { + if (pj_sockaddr_get_len(&alloc->perm[i]) == (unsigned)addr_len && + pj_memcmp(pj_sockaddr_get_addr(&alloc->perm[i]), + pj_sockaddr_get_addr(src_addr), + addr_len) == 0) + { + break; + } + } + if (i==alloc->perm_cnt) { + PJ_LOG(5,("", "Client %s received %d bytes unauthorized data from peer %s", + client_info, size, peer_info)); + if (alloc->perm_cnt == 0) + PJ_LOG(5,("", "Client %s has no permission", client_info)); + return PJ_TRUE; + } + + /* Format a Data indication */ + pa = (pj_stun_xor_peer_addr_attr*) + pj_stun_msg_find_attr(alloc->data_ind, PJ_STUN_ATTR_XOR_PEER_ADDR, 0); + da = (pj_stun_data_attr*) + pj_stun_msg_find_attr(alloc->data_ind, PJ_STUN_ATTR_DATA, 0); + pj_assert(pa && da); + + pj_sockaddr_cp(&pa->sockaddr, src_addr); + da->data = (pj_uint8_t*)data; + da->length = size; + + /* Encode Data indication */ + status = pj_stun_msg_encode(alloc->data_ind, buffer, sizeof(buffer), 0, + NULL, &size); + if (status != PJ_SUCCESS) + return PJ_TRUE; + + /* Send */ + sent = size; + PJ_LOG(5,("", "Forwarding %d bytes data from peer %s to client %s", + sent, peer_info, client_info)); + + pj_activesock_sendto(alloc->test_srv->turn_sock, &alloc->send_key, buffer, + &sent, 0, &alloc->client_addr, + pj_sockaddr_get_len(&alloc->client_addr)); + + return PJ_TRUE; +} + |