int dual_tls_recv(rad_listen_t *listener) { RADIUS_PACKET *packet; REQUEST *request; RAD_REQUEST_FUNP fun = NULL; listen_socket_t *sock = listener->data; RADCLIENT *client = sock->client; if (!tls_socket_recv(listener)) { return 0; } rad_assert(sock->request != NULL); rad_assert(sock->request->packet != NULL); rad_assert(sock->packet != NULL); rad_assert(sock->ssn != NULL); request = sock->request; packet = sock->packet; /* * Some sanity checks, based on the packet code. */ switch(packet->code) { case PW_AUTHENTICATION_REQUEST: if (listener->type != RAD_LISTEN_AUTH) goto bad_packet; FR_STATS_INC(auth, total_requests); fun = rad_authenticate; break; case PW_ACCOUNTING_REQUEST: if (listener->type != RAD_LISTEN_ACCT) goto bad_packet; FR_STATS_INC(acct, total_requests); fun = rad_accounting; break; case PW_STATUS_SERVER: if (!mainconfig.status_server) { FR_STATS_INC(auth, total_unknown_types); DEBUG("WARNING: Ignoring Status-Server request due to security configuration"); rad_free(&sock->packet); request->packet = NULL; return 0; } fun = rad_status_server; break; default: bad_packet: FR_STATS_INC(auth, total_unknown_types); DEBUG("Invalid packet code %d sent from client %s port %d : IGNORED", packet->code, client->shortname, packet->src_port); rad_free(&sock->packet); request->packet = NULL; return 0; } /* switch over packet types */ if (!request_receive(listener, packet, client, fun)) { FR_STATS_INC(auth, total_packets_dropped); rad_free(&sock->packet); request->packet = NULL; return 0; } sock->packet = NULL; /* we have no need for more partial reads */ request->packet = NULL; return 1; }
static int tls_socket_recv(rad_listen_t *listener) { int doing_init = FALSE; ssize_t rcode; RADIUS_PACKET *packet; REQUEST *request; listen_socket_t *sock = listener->data; fr_tls_status_t status; RADCLIENT *client = sock->client; if (!sock->packet) { sock->packet = rad_alloc(0); if (!sock->packet) return 0; sock->packet->sockfd = listener->fd; sock->packet->src_ipaddr = sock->other_ipaddr; sock->packet->src_port = sock->other_port; sock->packet->dst_ipaddr = sock->my_ipaddr; sock->packet->dst_port = sock->my_port; if (sock->request) sock->request->packet = sock->packet; } /* * Allocate a REQUEST for debugging. */ if (!sock->request) { sock->request = request = request_alloc(); if (!sock->request) { radlog(L_ERR, "Out of memory"); return 0; } rad_assert(request->packet == NULL); rad_assert(sock->packet != NULL); request->packet = sock->packet; request->component = "<core>"; request->component = "<tls-connect>"; /* * Not sure if we should do this on every packet... */ request->reply = rad_alloc(0); if (!request->reply) return 0; request->options = RAD_REQUEST_OPTION_DEBUG2; rad_assert(sock->ssn == NULL); sock->ssn = tls_new_session(listener->tls, sock->request, listener->tls->require_client_cert); if (!sock->ssn) { request_free(&sock->request); sock->packet = NULL; return 0; } SSL_set_ex_data(sock->ssn->ssl, FR_TLS_EX_INDEX_REQUEST, (void *)request); SSL_set_ex_data(sock->ssn->ssl, FR_TLS_EX_INDEX_CERTS, (void *)&request->packet->vps); doing_init = TRUE; } rad_assert(sock->request != NULL); rad_assert(sock->request->packet != NULL); rad_assert(sock->packet != NULL); rad_assert(sock->ssn != NULL); request = sock->request; RDEBUG3("Reading from socket %d", request->packet->sockfd); PTHREAD_MUTEX_LOCK(&sock->mutex); rcode = read(request->packet->sockfd, sock->ssn->dirty_in.data, sizeof(sock->ssn->dirty_in.data)); if ((rcode < 0) && (errno == ECONNRESET)) { do_close: PTHREAD_MUTEX_UNLOCK(&sock->mutex); tls_socket_close(listener); return 0; } if (rcode < 0) { RDEBUG("Error reading TLS socket: %s", strerror(errno)); goto do_close; } /* * Normal socket close. */ if (rcode == 0) goto do_close; sock->ssn->dirty_in.used = rcode; memset(sock->ssn->dirty_in.data + sock->ssn->dirty_in.used, 0, 16); dump_hex("READ FROM SSL", sock->ssn->dirty_in.data, sock->ssn->dirty_in.used); /* * Catch attempts to use non-SSL. */ if (doing_init && (sock->ssn->dirty_in.data[0] != handshake)) { RDEBUG("Non-TLS data sent to TLS socket: closing"); goto do_close; } /* * Skip ahead to reading application data. */ if (SSL_is_init_finished(sock->ssn->ssl)) goto app; if (!tls_handshake_recv(request, sock->ssn)) { RDEBUG("FAILED in TLS handshake receive"); goto do_close; } if (sock->ssn->dirty_out.used > 0) { tls_socket_write(listener, request); PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; } app: /* * FIXME: Run the packet through a virtual server in * order to see if we like the certificate presented by * the client. */ status = tls_application_data(sock->ssn, request); RDEBUG("Application data status %d", status); if (status == FR_TLS_MORE_FRAGMENTS) { PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; } if (sock->ssn->clean_out.used == 0) { PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; } dump_hex("TUNNELED DATA", sock->ssn->clean_out.data, sock->ssn->clean_out.used); /* * If the packet is a complete RADIUS packet, return it to * the caller. Otherwise... */ if ((sock->ssn->clean_out.used < 20) || (((sock->ssn->clean_out.data[2] << 8) | sock->ssn->clean_out.data[3]) != (int) sock->ssn->clean_out.used)) { RDEBUG("Received bad packet: Length %d contents %d", sock->ssn->clean_out.used, (sock->ssn->clean_out.data[2] << 8) | sock->ssn->clean_out.data[3]); goto do_close; } packet = sock->packet; packet->data = rad_malloc(sock->ssn->clean_out.used); packet->data_len = sock->ssn->clean_out.used; sock->ssn->record_minus(&sock->ssn->clean_out, packet->data, packet->data_len); packet->vps = NULL; PTHREAD_MUTEX_UNLOCK(&sock->mutex); if (!rad_packet_ok(packet, 0)) { RDEBUG("Received bad packet: %s", fr_strerror()); tls_socket_close(listener); return 0; /* do_close unlocks the mutex */ } /* * Copied from src/lib/radius.c, rad_recv(); */ if (fr_debug_flag) { char host_ipaddr[128]; if ((packet->code > 0) && (packet->code < FR_MAX_PACKET_CODE)) { RDEBUG("tls_recv: %s packet from host %s port %d, id=%d, length=%d", fr_packet_codes[packet->code], inet_ntop(packet->src_ipaddr.af, &packet->src_ipaddr.ipaddr, host_ipaddr, sizeof(host_ipaddr)), packet->src_port, packet->id, (int) packet->data_len); } else { RDEBUG("tls_recv: Packet from host %s port %d code=%d, id=%d, length=%d", inet_ntop(packet->src_ipaddr.af, &packet->src_ipaddr.ipaddr, host_ipaddr, sizeof(host_ipaddr)), packet->src_port, packet->code, packet->id, (int) packet->data_len); } } FR_STATS_INC(auth, total_requests); return 1; }
static int tls_socket_recv(rad_listen_t *listener) { bool doing_init = false; ssize_t rcode; RADIUS_PACKET *packet; REQUEST *request; listen_socket_t *sock = listener->data; fr_tls_status_t status; RADCLIENT *client = sock->client; if (!sock->packet) { sock->packet = fr_radius_alloc(sock, false); if (!sock->packet) return 0; sock->packet->sockfd = listener->fd; sock->packet->src_ipaddr = sock->other_ipaddr; sock->packet->src_port = sock->other_port; sock->packet->dst_ipaddr = sock->my_ipaddr; sock->packet->dst_port = sock->my_port; if (sock->request) sock->request->packet = talloc_steal(sock->request, sock->packet); } /* * Allocate a REQUEST for debugging, and initialize the TLS session. */ if (!sock->request) { sock->request = request = request_alloc(sock); if (!sock->request) { ERROR("Out of memory"); return 0; } rad_assert(request->packet == NULL); rad_assert(sock->packet != NULL); request->packet = talloc_steal(request, sock->packet); request->component = "<tls-connect>"; request->reply = fr_radius_alloc(request, false); if (!request->reply) return 0; rad_assert(sock->tls_session == NULL); sock->tls_session = tls_session_init_server(sock, listener->tls, sock->request, listener->tls->require_client_cert); if (!sock->tls_session) { TALLOC_FREE(sock->request); sock->packet = NULL; return 0; } SSL_set_ex_data(sock->tls_session->ssl, FR_TLS_EX_INDEX_REQUEST, (void *)request); doing_init = true; } rad_assert(sock->request != NULL); rad_assert(sock->request->packet != NULL); rad_assert(sock->packet != NULL); rad_assert(sock->tls_session != NULL); request = sock->request; RDEBUG3("Reading from socket %d", request->packet->sockfd); PTHREAD_MUTEX_LOCK(&sock->mutex); rcode = read(request->packet->sockfd, sock->tls_session->dirty_in.data, sizeof(sock->tls_session->dirty_in.data)); if ((rcode < 0) && (errno == ECONNRESET)) { do_close: PTHREAD_MUTEX_UNLOCK(&sock->mutex); DEBUG("Closing TLS socket from client port %u", sock->other_port); tls_socket_close(listener); PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; } if (rcode < 0) { RDEBUG("Error reading TLS socket: %s", fr_syserror(errno)); goto do_close; } /* * Normal socket close. */ if (rcode == 0) goto do_close; sock->tls_session->dirty_in.used = rcode; dump_hex("READ FROM SSL", sock->tls_session->dirty_in.data, sock->tls_session->dirty_in.used); /* * Catch attempts to use non-SSL. */ if (doing_init && (sock->tls_session->dirty_in.data[0] != handshake)) { RDEBUG("Non-TLS data sent to TLS socket: closing"); goto do_close; } /* * If we need to do more initialization, do that here. */ if (!SSL_is_init_finished(sock->tls_session->ssl)) { if (!tls_handshake_recv(request, sock->tls_session)) { RDEBUG("FAILED in TLS handshake receive"); goto do_close; } /* * More ACK data to send. Do so. */ if (sock->tls_session->dirty_out.used > 0) { tls_socket_write(listener, request); PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; } /* * FIXME: Run the request through a virtual * server in order to see if we like the * certificate presented by the client. */ } /* * Try to get application data. */ status = tls_application_data(sock->tls_session, request); RDEBUG("Application data status %d", status); if (status == FR_TLS_RECORD_FRAGMENT_MORE) { PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; } if (sock->tls_session->clean_out.used == 0) { PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; } /* * We now have a bunch of application data. */ dump_hex("TUNNELED DATA > ", sock->tls_session->clean_out.data, sock->tls_session->clean_out.used); /* * If the packet is a complete RADIUS packet, return it to * the caller. Otherwise... */ if ((sock->tls_session->clean_out.used < 20) || (((sock->tls_session->clean_out.data[2] << 8) | sock->tls_session->clean_out.data[3]) != (int) sock->tls_session->clean_out.used)) { RDEBUG("Received bad packet: Length %zd contents %d", sock->tls_session->clean_out.used, (sock->tls_session->clean_out.data[2] << 8) | sock->tls_session->clean_out.data[3]); goto do_close; } packet = sock->packet; packet->data = talloc_array(packet, uint8_t, sock->tls_session->clean_out.used); packet->data_len = sock->tls_session->clean_out.used; sock->tls_session->record_to_buff(&sock->tls_session->clean_out, packet->data, packet->data_len); packet->vps = NULL; PTHREAD_MUTEX_UNLOCK(&sock->mutex); if (!fr_radius_ok(packet, 0, NULL)) { if (DEBUG_ENABLED) ERROR("Receive - %s", fr_strerror()); DEBUG("Closing TLS socket from client"); PTHREAD_MUTEX_LOCK(&sock->mutex); tls_socket_close(listener); PTHREAD_MUTEX_UNLOCK(&sock->mutex); return 0; /* do_close unlocks the mutex */ } /* * Copied from src/lib/radius.c, fr_radius_recv(); */ if (fr_debug_lvl) { char host_ipaddr[INET6_ADDRSTRLEN]; if (is_radius_code(packet->code)) { RDEBUG("tls_recv: %s packet from host %s port %d, id=%d, length=%d", fr_packet_codes[packet->code], inet_ntop(packet->src_ipaddr.af, &packet->src_ipaddr.ipaddr, host_ipaddr, sizeof(host_ipaddr)), packet->src_port, packet->id, (int) packet->data_len); } else { RDEBUG("tls_recv: Packet from host %s port %d code=%d, id=%d, length=%d", inet_ntop(packet->src_ipaddr.af, &packet->src_ipaddr.ipaddr, host_ipaddr, sizeof(host_ipaddr)), packet->src_port, packet->code, packet->id, (int) packet->data_len); } } FR_STATS_INC(auth, total_requests); return 1; }
int dual_tls_recv(rad_listen_t *listener) { RADIUS_PACKET *packet; RAD_REQUEST_FUNP fun = NULL; listen_socket_t *sock = listener->data; RADCLIENT *client = sock->client; if (listener->status != RAD_LISTEN_STATUS_KNOWN) return 0; if (!tls_socket_recv(listener)) { return 0; } rad_assert(sock->packet != NULL); rad_assert(sock->tls_session != NULL); rad_assert(client != NULL); packet = talloc_steal(NULL, sock->packet); sock->packet = NULL; gettimeofday(&packet->timestamp, NULL); /* * Some sanity checks, based on the packet code. * * "auth+acct" are marked as "auth", with the "dual" flag * set. */ switch (packet->code) { case PW_CODE_ACCESS_REQUEST: if (listener->type != RAD_LISTEN_AUTH) goto bad_packet; FR_STATS_INC(auth, total_requests); fun = rad_authenticate; break; #ifdef WITH_ACCOUNTING case PW_CODE_ACCOUNTING_REQUEST: if (listener->type != RAD_LISTEN_ACCT) { /* * Allow auth + dual. Disallow * everything else. */ if (!((listener->type == RAD_LISTEN_AUTH) && (listener->dual))) { goto bad_packet; } } FR_STATS_INC(acct, total_requests); fun = rad_accounting; break; #endif case PW_CODE_STATUS_SERVER: if (!main_config.status_server) { FR_STATS_INC(auth, total_unknown_types); WARN("Ignoring Status-Server request due to security configuration"); fr_radius_free(&packet); return 0; } fun = rad_status_server; break; default: bad_packet: FR_STATS_INC(auth, total_unknown_types); DEBUG("Invalid packet code %d sent from client %s port %d : IGNORED", packet->code, client->shortname, packet->src_port); fr_radius_free(&packet); return 0; } /* switch over packet types */ if (!request_receive(NULL, listener, packet, client, fun)) { FR_STATS_INC(auth, total_packets_dropped); fr_radius_free(&packet); return 0; } return 1; }
int dual_tls_recv(rad_listen_t *listener) { RADIUS_PACKET *packet; RAD_REQUEST_FUNP fun = NULL; listen_socket_t *sock = listener->data; RADCLIENT *client = sock->client; BIO *rbio; if (listener->status != RAD_LISTEN_STATUS_KNOWN) return 0; redo: if (!tls_socket_recv(listener)) { return 0; } rad_assert(sock->packet != NULL); rad_assert(sock->ssn != NULL); rad_assert(client != NULL); packet = talloc_steal(NULL, sock->packet); sock->packet = NULL; /* * Some sanity checks, based on the packet code. * * "auth+acct" are marked as "auth", with the "dual" flag * set. */ switch (packet->code) { case PW_CODE_ACCESS_REQUEST: if (listener->type != RAD_LISTEN_AUTH) goto bad_packet; FR_STATS_INC(auth, total_requests); fun = rad_authenticate; break; #ifdef WITH_ACCOUNTING case PW_CODE_ACCOUNTING_REQUEST: if (listener->type != RAD_LISTEN_ACCT) { /* * Allow auth + dual. Disallow * everything else. */ if (!((listener->type == RAD_LISTEN_AUTH) && (listener->dual))) { goto bad_packet; } } FR_STATS_INC(acct, total_requests); fun = rad_accounting; break; #endif case PW_CODE_STATUS_SERVER: if (!main_config.status_server) { FR_STATS_INC(auth, total_unknown_types); WARN("Ignoring Status-Server request due to security configuration"); rad_free(&packet); return 0; } fun = rad_status_server; break; default: bad_packet: FR_STATS_INC(auth, total_unknown_types); DEBUG("Invalid packet code %d sent from client %s port %d : IGNORED", packet->code, client->shortname, packet->src_port); rad_free(&packet); return 0; } /* switch over packet types */ if (!request_receive(NULL, listener, packet, client, fun)) { FR_STATS_INC(auth, total_packets_dropped); rad_free(&packet); return 0; } /* * Check for more application data. * * If there is pending SSL data, "peek" at the * application data. If we get at least one byte of * application data, go back to tls_socket_recv(). * SSL_peek() will set SSL_pending(), and * tls_socket_recv() will read another packet. */ rbio = SSL_get_rbio(sock->ssn->ssl); if (BIO_ctrl_pending(rbio)) { char buf[1]; int peek = SSL_peek(sock->ssn->ssl, buf, 1); if (peek > 0) { DEBUG("more TLS records after dual_tls_recv"); goto redo; } } return 1; }