1 /* ****************************************************************
3 * Copyright 2015 Samsung Electronics All Rights Reserved.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 ******************************************************************/
21 #include <sys/types.h>
22 #include <sys/socket.h>
23 #include <sys/select.h>
24 #include <sys/ioctl.h>
26 #include <tinyara/config.h>
34 #include <arpa/inet.h>
35 #include <netinet/in.h>
40 #include <sys/socket.h>
41 #include <netinet/in.h>
45 #include "catcpinterface.h"
46 #include "caipnwmonitor.h"
48 #include "caadapterutils.h"
50 #include "oic_malloc.h"
53 #include "ca_adapter_net_ssl.h"
57 * Logging tag for module name.
59 //#define TAG "OIC_CA_TCP_SERVER"
60 #define TAG TCP_SERVER_TAG
63 * Maximum CoAP over TCP header length
64 * to know the total data length.
66 #define COAP_MAX_HEADER_SIZE 6
71 #define TLS_HEADER_SIZE 5
74 * Max Connection Counts.
76 #define MAX_CONNECTION_COUNTS 500
78 #define COAP_TCP_MAX_BUFFER_CHUNK_SIZE 65530 //64kb - 6 (coap+tcp max header size)
83 static ca_thread_pool_t g_threadPool = NULL;
86 * Mutex to synchronize device object list.
88 static oc_mutex g_mutexObjectList = NULL;
91 * Conditional mutex to synchronize.
93 static oc_cond g_condObjectList = NULL;
96 * Maintains the callback to be notified when data received from remote device.
98 static CATCPPacketReceivedCallback g_packetReceivedCallback = NULL;
101 * Error callback to update error in TCP.
103 static CATCPErrorHandleCallback g_tcpErrorHandler = NULL;
106 * Connected Callback to pass the connection information to RI.
108 static CATCPConnectionHandleCallback g_connectionCallback = NULL;
110 static CASocketFd_t CACreateAcceptSocket(int family, CASocket_t *sock);
111 static void CAAcceptConnection(CATransportFlags_t flag, CASocket_t *sock);
112 static void CAFindReadyMessage();
113 static void CASelectReturned(fd_set *readFds);
114 static void CAReceiveMessage(int fd);
115 static void CAReceiveHandler(void *data);
116 static CAResult_t CATCPCreateSocket(int family, CATCPSessionInfo_t *svritem);
117 static void CATCPInitializeSocket();
119 #define CHECKFD(FD) \
120 if (FD > caglobals.tcp.maxfd) \
121 caglobals.tcp.maxfd = FD;
123 #define CLOSE_SOCKET(TYPE) \
124 if (caglobals.tcp.TYPE.fd != OC_INVALID_SOCKET) \
126 close(caglobals.tcp.TYPE.fd); \
127 caglobals.tcp.TYPE.fd = OC_INVALID_SOCKET; \
130 #define CA_FD_SET(TYPE, FDS) \
131 if (caglobals.tcp.TYPE.fd != OC_INVALID_SOCKET) \
133 FD_SET(caglobals.tcp.TYPE.fd, FDS); \
136 void CATCPDestroyMutex()
138 if (g_mutexObjectList)
140 oc_mutex_free(g_mutexObjectList);
141 g_mutexObjectList = NULL;
145 CAResult_t CATCPCreateMutex()
147 if (!g_mutexObjectList)
149 g_mutexObjectList = oc_mutex_new();
150 if (!g_mutexObjectList)
152 OIC_LOG(ERROR, TAG, "Failed to created mutex!");
153 return CA_STATUS_FAILED;
160 void CATCPDestroyCond()
162 if (g_condObjectList)
164 oc_cond_free(g_condObjectList);
165 g_condObjectList = NULL;
169 CAResult_t CATCPCreateCond()
171 if (!g_condObjectList)
173 g_condObjectList = oc_cond_new();
174 if (!g_condObjectList)
176 OIC_LOG(ERROR, TAG, "Failed to created cond!");
177 return CA_STATUS_FAILED;
183 static void CAReceiveHandler(void *data)
186 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
188 while (!caglobals.tcp.terminate)
190 CAFindReadyMessage();
193 oc_mutex_lock(g_mutexObjectList);
194 oc_cond_signal(g_condObjectList);
195 oc_mutex_unlock(g_mutexObjectList);
197 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
200 static void CAFindReadyMessage()
203 struct timeval timeout = { .tv_sec = caglobals.tcp.selectTimeout };
206 CA_FD_SET(ipv4, &readFds);
207 CA_FD_SET(ipv4s, &readFds);
208 CA_FD_SET(ipv6, &readFds);
209 CA_FD_SET(ipv6s, &readFds);
211 if (OC_INVALID_SOCKET != caglobals.tcp.shutdownFds[0])
213 FD_SET(caglobals.tcp.shutdownFds[0], &readFds);
216 if (OC_INVALID_SOCKET != caglobals.tcp.connectionFds[0])
218 FD_SET(caglobals.tcp.connectionFds[0], &readFds);
221 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
222 for (size_t i = 0; i < length; i++)
224 CATCPSessionInfo_t *svritem =
225 (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
226 if (svritem && 0 <= svritem->fd && CONNECTED == svritem->state)
228 FD_SET(svritem->fd, &readFds);
232 int ret = select(caglobals.tcp.maxfd + 1, &readFds, NULL, NULL, &timeout);
234 if (caglobals.tcp.terminate)
236 OIC_LOG_V(INFO, TAG, "Packet receiver Stop request received.");
243 OIC_LOG_V(FATAL, TAG, "select error %s", strerror(errno));
248 CASelectReturned(&readFds);
251 static void CASelectReturned(fd_set *readFds)
253 VERIFY_NON_NULL_VOID(readFds, TAG, "readFds is NULL");
255 if (caglobals.tcp.ipv4.fd != -1 && FD_ISSET(caglobals.tcp.ipv4.fd, readFds))
257 CAAcceptConnection(CA_IPV4, &caglobals.tcp.ipv4);
260 else if (caglobals.tcp.ipv4s.fd != -1 && FD_ISSET(caglobals.tcp.ipv4s.fd, readFds))
262 CAAcceptConnection(CA_IPV4 | CA_SECURE, &caglobals.tcp.ipv4s);
265 else if (caglobals.tcp.ipv6.fd != -1 && FD_ISSET(caglobals.tcp.ipv6.fd, readFds))
267 CAAcceptConnection(CA_IPV6, &caglobals.tcp.ipv6);
270 else if (caglobals.tcp.ipv6s.fd != -1 && FD_ISSET(caglobals.tcp.ipv6s.fd, readFds))
272 CAAcceptConnection(CA_IPV6 | CA_SECURE, &caglobals.tcp.ipv6s);
275 else if (-1 != caglobals.tcp.connectionFds[0] &&
276 FD_ISSET(caglobals.tcp.connectionFds[0], readFds))
278 // new connection was created from remote device.
279 // exit the function to update read file descriptor.
280 char buf[MAX_ADDR_STR_SIZE_CA] = {0};
281 ssize_t len = read(caglobals.tcp.connectionFds[0], buf, sizeof (buf));
286 OIC_LOG_V(DEBUG, TAG, "Received new connection event with [%s]", buf);
291 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
292 for (size_t i = 0; i < length; i++)
294 CATCPSessionInfo_t *svritem =
295 (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
296 if (svritem && svritem->fd >= 0)
298 if (FD_ISSET(svritem->fd, readFds))
300 CAReceiveMessage(svritem->fd);
307 static void CAAcceptConnection(CATransportFlags_t flag, CASocket_t *sock)
309 OIC_LOG_V(INFO, TAG, "In %s", __func__);
310 VERIFY_NON_NULL_VOID(sock, TAG, "sock is NULL");
312 if (MAX_CONNECTION_COUNTS == u_arraylist_length(caglobals.tcp.svrlist))
314 OIC_LOG_V(INFO, TAG, "Exceeding the max connection counts limit, close listening port");
316 sock->fd = OC_INVALID_SOCKET;
320 struct sockaddr_storage clientaddr;
321 socklen_t clientlen = sizeof (struct sockaddr_in);
324 clientlen = sizeof(struct sockaddr_in6);
327 CASocketFd_t sockfd = accept(sock->fd, (struct sockaddr *)&clientaddr, &clientlen);
328 if (OC_INVALID_SOCKET != sockfd)
330 CATCPSessionInfo_t *svritem =
331 (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
334 OIC_LOG(ERROR, TAG, "Out of memory");
339 svritem->fd = sockfd;
340 svritem->sep.endpoint.flags = flag;
341 svritem->sep.endpoint.adapter = CA_ADAPTER_TCP;
342 svritem->state = CONNECTED;
343 svritem->isClient = false;
344 CAConvertAddrToName((struct sockaddr_storage *)&clientaddr, clientlen,
345 svritem->sep.endpoint.addr, &svritem->sep.endpoint.port);
347 oc_mutex_lock(g_mutexObjectList);
348 bool result = u_arraylist_add(caglobals.tcp.svrlist, svritem);
351 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
354 oc_mutex_unlock(g_mutexObjectList);
357 oc_mutex_unlock(g_mutexObjectList);
361 // pass the connection information to CA Common Layer.
362 if (g_connectionCallback)
364 g_connectionCallback(&(svritem->sep.endpoint), true, svritem->isClient);
367 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
371 * Clean socket state data
373 * @param[in/out] item - socket state data
375 void CACleanData(CATCPSessionInfo_t *svritem)
379 OICFree(svritem->data);
380 svritem->data = NULL;
385 svritem->totalLen = 0;
387 svritem->protocol = UNKNOWN;
392 * Construct CoAP header and payload from buffer
394 * @param[in] svritem - used socket, buffer, current received message length and protocol
395 * @param[in/out] data - data buffer, this value is updated as data is copied to svritem
396 * @param[in/out] dataLength - length of data, this value decreased as data is copied to svritem
397 * @return - CA_STATUS_OK or appropriate error code
399 CAResult_t CAConstructCoAP(CATCPSessionInfo_t *svritem, unsigned char **data,
402 OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
404 if (NULL == svritem || NULL == data || NULL == dataLength)
406 OIC_LOG(ERROR, TAG, "Invalid input parameter(NULL)");
407 return CA_STATUS_INVALID_PARAM;
410 unsigned char *inBuffer = *data;
411 size_t inLen = *dataLength;
412 OIC_LOG_V(DEBUG, TAG, "before-datalength : %u", *dataLength);
414 if (NULL == svritem->data && inLen > 0)
416 // allocate memory for message header (CoAP header size because it is bigger)
417 svritem->data = (unsigned char *) OICCalloc(1, COAP_MAX_HEADER_SIZE);
418 if (NULL == svritem->data)
420 OIC_LOG(ERROR, TAG, "OICCalloc - out of memory");
421 return CA_MEMORY_ALLOC_FAILED;
424 // copy 1 byte to parse coap header length
425 memcpy(svritem->data, inBuffer, 1);
427 svritem->bufLen = COAP_MAX_HEADER_SIZE;
432 //if not enough data received - read them on next CAFillHeader() call
438 //if enough data received - parse header
439 svritem->protocol = COAP;
441 //seems CoAP data received. read full coap header.
442 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(svritem->data[0] >> 4);
443 size_t headerLen = coap_get_tcp_header_length_for_transport(transport);
447 if (svritem->len < headerLen)
449 copyLen = headerLen - svritem->len;
455 //read required bytes to have full CoAP header
456 memcpy(svritem->data + svritem->len, inBuffer, copyLen);
457 svritem->len += copyLen;
461 //if not enough data received - read them on next CAFillHeader() call
462 if (svritem->len < headerLen)
466 OIC_LOG(DEBUG, TAG, "CoAP header received partially. Wait for rest header data");
470 //calculate CoAP message length
471 svritem->totalLen = CAGetTotalLengthFromHeader(svritem->data);
477 // Calculate length of data to be copied.
478 copyLen = svritem->totalLen - svritem->len;
484 // Is buffer not big enough for remaining data ?
485 if (svritem->len + copyLen > svritem->bufLen)
487 // Resize buffer to accommodate enough space
488 size_t extLen = svritem->totalLen - svritem->bufLen;
489 if (extLen > COAP_TCP_MAX_BUFFER_CHUNK_SIZE)
491 extLen = COAP_TCP_MAX_BUFFER_CHUNK_SIZE;
494 // Allocate required memory
495 unsigned char *buffer = OICRealloc(svritem->data, svritem->bufLen + extLen);
498 OIC_LOG(ERROR, TAG, "OICRealloc - out of memory");
499 return CA_MEMORY_ALLOC_FAILED;
502 svritem->data = buffer;
503 svritem->bufLen += extLen;
506 // Read required bytes to have full CoAP payload
507 memcpy(svritem->data + svritem->len, inBuffer, copyLen);
508 svritem->len += copyLen;
516 OIC_LOG_V(DEBUG, TAG, "after-datalength : %u", *dataLength);
517 OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
521 static void CAReceiveMessage(int fd)
523 CAResult_t res = CA_STATUS_OK;
525 //get remote device information from file descriptor.
527 CATCPSessionInfo_t *svritem = CAGetSessionInfoFromFD(fd, &index);
530 OIC_LOG(ERROR, TAG, "there is no connection information in list");
537 if (svritem->sep.endpoint.flags & CA_SECURE)
539 svritem->protocol = TLS;
543 size_t tlsLength = 0;
545 if (TLS_HEADER_SIZE > svritem->tlsLen)
547 nbRead = TLS_HEADER_SIZE - svritem->tlsLen;
551 //[3][4] bytes in tls header are tls payload length
552 tlsLength = TLS_HEADER_SIZE +
553 (size_t)((svritem->tlsdata[3] << 8) | svritem->tlsdata[4]);
554 OIC_LOG_V(DEBUG, TAG, "total tls length = %u", tlsLength);
555 if (tlsLength > sizeof(svritem->tlsdata))
557 OIC_LOG_V(ERROR, TAG, "total tls length is too big (buffer size : %u)",
558 sizeof(svritem->tlsdata));
559 if (CA_STATUS_OK != CAcloseSslConnection(&svritem->sep.endpoint))
561 OIC_LOG(ERROR, TAG, "Failed to close TLS session");
563 CASearchAndDeleteTCPSession(&(svritem->sep.endpoint));
566 nbRead = tlsLength - svritem->tlsLen;
569 len = recv(fd, svritem->tlsdata + svritem->tlsLen, nbRead, 0);
572 OIC_LOG_V(ERROR, TAG, "recv failed %s", strerror(errno));
573 res = CA_RECEIVE_FAILED;
577 OIC_LOG(INFO, TAG, "Received disconnect from peer. Close connection");
578 svritem->state = DISCONNECTED;
579 res = CA_DESTINATION_DISCONNECTED;
583 svritem->tlsLen += len;
584 OIC_LOG_V(DEBUG, TAG, "nb_read : %u bytes , recv() : %d bytes, svritem->tlsLen : %u bytes",
585 nbRead, len, svritem->tlsLen);
586 if (tlsLength > 0 && tlsLength == svritem->tlsLen)
588 //when successfully read data - pass them to callback.
589 res = CAdecryptSsl(&svritem->sep, (uint8_t *)svritem->tlsdata, svritem->tlsLen);
591 OIC_LOG_V(INFO, TAG, "%s: CAdecryptSsl returned %d", __func__, res);
599 svritem->protocol = COAP;
601 // svritem->tlsdata can also be used as receiving buffer in case of raw tcp
602 len = recv(fd, svritem->tlsdata, sizeof(svritem->tlsdata), 0);
605 OIC_LOG_V(ERROR, TAG, "recv failed %s", strerror(errno));
606 res = CA_RECEIVE_FAILED;
610 OIC_LOG(INFO, TAG, "Received disconnect from peer. Close connection");
611 res = CA_DESTINATION_DISCONNECTED;
615 OIC_LOG_V(DEBUG, TAG, "recv() : %d bytes", len);
616 //when successfully read data - pass them to callback.
617 if (g_packetReceivedCallback)
619 res = g_packetReceivedCallback(&svritem->sep, svritem->tlsdata, len);
624 //disconnect session and clean-up data if any error occurs
625 if (res != CA_STATUS_OK)
627 if (CA_STATUS_OK != CATCPDisconnectSession(&svritem->sep.endpoint))
629 CASearchAndDeleteTCPSession(&svritem->sep.endpoint);
630 OIC_LOG(ERROR, TAG, "Failed to disconnect TCP session");
637 static ssize_t CAWakeUpForReadFdsUpdate(const char *host)
639 if (caglobals.tcp.connectionFds[1] != -1)
644 len = write(caglobals.tcp.connectionFds[1], host, strlen(host));
645 } while ((len == -1) && (errno == EINTR));
647 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
649 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
656 static CAResult_t CATCPConvertNameToAddr(int family, const char *host, uint16_t port,
657 struct sockaddr_storage *sockaddr)
659 struct addrinfo *addrs = NULL;
660 struct addrinfo hints = { .ai_family = family,
661 .ai_protocol = IPPROTO_TCP,
662 .ai_socktype = SOCK_STREAM,
663 .ai_flags = AI_NUMERICHOST };
665 int r = getaddrinfo(host, NULL, &hints, &addrs);
670 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: errno %s", strerror(errno));
674 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: %s", gai_strerror(r));
677 return CA_STATUS_FAILED;
679 // assumption: in this case, getaddrinfo will only return one addrinfo
680 // or first is the one we want.
681 if (addrs[0].ai_family == AF_INET6)
683 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in6));
684 ((struct sockaddr_in6 *)sockaddr)->sin6_port = htons(port);
688 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in));
689 ((struct sockaddr_in *)sockaddr)->sin_port = htons(port);
695 static CAResult_t CATCPCreateSocket(int family, CATCPSessionInfo_t *svritem)
697 VERIFY_NON_NULL(svritem, TAG, "svritem is NULL");
699 OIC_LOG_V(INFO, TAG, "try to connect with [%s:%u]",
700 svritem->sep.endpoint.addr, svritem->sep.endpoint.port);
702 // #1. create tcp socket.
703 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
706 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", strerror(errno));
707 return CA_SOCKET_OPERATION_FAILED;
711 // #2. convert address from string to binary.
712 struct sockaddr_storage sa = { .ss_family = family };
713 CAResult_t res = CATCPConvertNameToAddr(family, svritem->sep.endpoint.addr,
714 svritem->sep.endpoint.port, &sa);
715 if (CA_STATUS_OK != res)
717 OIC_LOG(ERROR, TAG, "convert name to sockaddr failed");
718 return CA_SOCKET_OPERATION_FAILED;
721 // #3. set socket length.
722 socklen_t socklen = 0;
723 if (sa.ss_family == AF_INET6)
725 struct sockaddr_in6 *sock6 = (struct sockaddr_in6 *)&sa;
726 if (!sock6->sin6_scope_id)
728 sock6->sin6_scope_id = svritem->sep.endpoint.ifindex;
730 socklen = sizeof(struct sockaddr_in6);
734 socklen = sizeof(struct sockaddr_in);
737 // #4. connect to remote server device.
738 if (connect(fd, (struct sockaddr *)&sa, socklen) < 0)
740 OIC_LOG_V(ERROR, TAG, "failed to connect socket, %s", strerror(errno));
741 CALogSendStateInfo(svritem->sep.endpoint.adapter, svritem->sep.endpoint.addr,
742 svritem->sep.endpoint.port, 0, false, strerror(errno));
743 return CA_SOCKET_OPERATION_FAILED;
746 OIC_LOG(INFO, TAG, "connect socket success");
747 svritem->state = CONNECTED;
748 CHECKFD(svritem->fd);
749 ssize_t len = CAWakeUpForReadFdsUpdate(svritem->sep.endpoint.addr);
752 OIC_LOG(ERROR, TAG, "wakeup receive thread failed");
753 return CA_SOCKET_OPERATION_FAILED;
758 static CASocketFd_t CACreateAcceptSocket(int family, CASocket_t *sock)
760 VERIFY_NON_NULL_RET(sock, TAG, "sock", -1);
762 if (OC_INVALID_SOCKET != sock->fd)
764 OIC_LOG(DEBUG, TAG, "accept socket created already");
768 socklen_t socklen = 0;
769 struct sockaddr_storage server = { .ss_family = family };
771 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
772 if (OC_INVALID_SOCKET == fd)
774 OIC_LOG(ERROR, TAG, "Failed to create socket");
778 if (family == AF_INET6)
780 // the socket is restricted to sending and receiving IPv6 packets only.
782 //TODO: enable once IPv6 is supported
784 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on)))
786 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", strerror(errno));
790 ((struct sockaddr_in6 *)&server)->sin6_port = htons(sock->port);
791 socklen = sizeof (struct sockaddr_in6);
795 ((struct sockaddr_in *)&server)->sin_port = htons(sock->port);
796 socklen = sizeof (struct sockaddr_in);
800 if (-1 == setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)))
802 OIC_LOG(ERROR, TAG, "setsockopt SO_REUSEADDR");
806 if (-1 == bind(fd, (struct sockaddr *)&server, socklen))
808 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", strerror(errno));
812 if (listen(fd, caglobals.tcp.listenBacklog) != 0)
814 OIC_LOG(ERROR, TAG, "listen() error");
818 if (sock->port) // use the given port
821 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, OPTVAL_T(&on), sizeof (on)))
823 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", strerror(errno));
825 return OC_INVALID_SOCKET;
828 else // return the assigned port
830 if (-1 == getsockname(fd, (struct sockaddr *)&server, &socklen))
832 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", strerror(errno));
835 sock->port = ntohs(family == AF_INET6 ?
836 ((struct sockaddr_in6 *)&server)->sin6_port :
837 ((struct sockaddr_in *)&server)->sin_port);
847 return OC_INVALID_SOCKET;
850 static void CAInitializePipe(int *fds)
853 // TODO: Remove temporary workaround once F_GETFD / F_SETFD support is in TizenRT
854 /* Temporary workaround: By pass F_GETFD / F_SETFD */
864 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
869 ret = fcntl(fds[0], F_GETFD);
872 ret = fcntl(fds[0], F_SETFD, ret|FD_CLOEXEC);
876 ret = fcntl(fds[1], F_GETFD);
880 ret = fcntl(fds[1], F_SETFD, ret|FD_CLOEXEC);
890 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
896 #define NEWSOCKET(FAMILY, NAME) \
897 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
898 if (caglobals.tcp.NAME.fd == -1) \
900 caglobals.tcp.NAME.port = 0; \
901 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
903 CHECKFD(caglobals.tcp.NAME.fd);
905 void CATCPInitializeSocket()
908 NEWSOCKET(AF_INET, ipv4);
910 NEWSOCKET(AF_INET, ipv4s);
913 //TODO Enable once TizenRT supports IPv6
916 NEWSOCKET(AF_INET6, ipv6);
918 NEWSOCKET(AF_INET6, ipv6s);
922 OIC_LOG_V(DEBUG, TAG, "IPv4 socket fd=%d, port=%d",
923 caglobals.tcp.ipv4.fd, caglobals.tcp.ipv4.port);
924 OIC_LOG_V(DEBUG, TAG, "IPv6 socket fd=%d, port=%d",
925 caglobals.tcp.ipv6.fd, caglobals.tcp.ipv6.port);
927 OIC_LOG_V(DEBUG, TAG, "IPv4 secure socket fd=%d, port=%d",
928 caglobals.tcp.ipv4s.fd, caglobals.tcp.ipv4s.port);
929 OIC_LOG_V(DEBUG, TAG, "IPv6 secure socket fd=%d, port=%d",
930 caglobals.tcp.ipv6s.fd, caglobals.tcp.ipv6s.port);
934 CAResult_t CATCPStartServer(const ca_thread_pool_t threadPool)
936 oc_mutex_lock(g_mutexObjectList);
937 if (caglobals.tcp.started)
939 oc_mutex_unlock(g_mutexObjectList);
940 OIC_LOG(INFO, TAG, "Adapter is started already");
944 g_threadPool = threadPool;
946 if (!caglobals.tcp.ipv4tcpenabled)
948 caglobals.tcp.ipv4tcpenabled = true; // only needed to run CA tests
950 if (!caglobals.tcp.ipv6tcpenabled)
952 caglobals.tcp.ipv6tcpenabled = true; // only needed to run CA tests
955 caglobals.tcp.terminate = false;
956 if (!caglobals.tcp.svrlist)
958 caglobals.tcp.svrlist = u_arraylist_create();
961 if (caglobals.server)
963 CATCPInitializeSocket();
966 // create pipe for fast shutdown
967 CAInitializePipe(caglobals.tcp.shutdownFds);
968 CHECKFD(caglobals.tcp.shutdownFds[0]);
969 CHECKFD(caglobals.tcp.shutdownFds[1]);
971 // create pipe for connection event
972 CAInitializePipe(caglobals.tcp.connectionFds);
973 CHECKFD(caglobals.tcp.connectionFds[0]);
974 CHECKFD(caglobals.tcp.connectionFds[1]);
976 CAResult_t res = CA_STATUS_OK;
978 res = ca_thread_pool_add_task(g_threadPool, CAReceiveHandler, NULL, NULL);
980 res = ca_thread_pool_add_task(g_threadPool, CAReceiveHandler, NULL, NULL,
981 "IoT_TCPReceive", CONFIG_IOTIVITY_TCPRECEIVE_PTHREAD_STACKSIZE);
983 if (CA_STATUS_OK != res)
985 oc_mutex_unlock(g_mutexObjectList);
986 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
991 caglobals.tcp.started = true;
992 oc_mutex_unlock(g_mutexObjectList);
994 OIC_LOG(INFO, TAG, "CAReceiveHandler thread started successfully.");
998 void CATCPStopServer()
1000 oc_mutex_lock(g_mutexObjectList);
1001 if (caglobals.tcp.terminate)
1003 oc_mutex_unlock(g_mutexObjectList);
1004 OIC_LOG(INFO, TAG, "Adapter is not enabled");
1008 // set terminate flag.
1009 caglobals.tcp.terminate = true;
1012 if (caglobals.tcp.started)
1014 oc_cond_wait(g_condObjectList, g_mutexObjectList);
1015 caglobals.tcp.started = false;
1019 // close accept socket.
1020 #ifndef __WITH_TLS__
1024 CLOSE_SOCKET(ipv4s);
1025 CLOSE_SOCKET(ipv6s);
1028 close(caglobals.tcp.connectionFds[1]);
1029 close(caglobals.tcp.connectionFds[0]);
1030 caglobals.tcp.connectionFds[1] = OC_INVALID_SOCKET;
1031 caglobals.tcp.connectionFds[0] = OC_INVALID_SOCKET;
1033 if (caglobals.tcp.shutdownFds[1] != OC_INVALID_SOCKET)
1035 close(caglobals.tcp.shutdownFds[1]);
1036 caglobals.tcp.shutdownFds[1] = OC_INVALID_SOCKET;
1037 // receive thread will stop immediately
1039 if (caglobals.tcp.started)
1041 oc_cond_wait(g_condObjectList, g_mutexObjectList);
1042 caglobals.tcp.started = false;
1044 if (caglobals.tcp.shutdownFds[0] != OC_INVALID_SOCKET)
1046 close(caglobals.tcp.shutdownFds[0]);
1047 caglobals.tcp.shutdownFds[0] = OC_INVALID_SOCKET;
1050 oc_mutex_unlock(g_mutexObjectList);
1052 CATCPDisconnectAll();
1055 OIC_LOG(INFO, TAG, "Adapter terminated successfully");
1058 void CATCPSetPacketReceiveCallback(CATCPPacketReceivedCallback callback)
1060 g_packetReceivedCallback = callback;
1063 void CATCPSetConnectionChangedCallback(CATCPConnectionHandleCallback connHandler)
1065 g_connectionCallback = connHandler;
1068 size_t CACheckPayloadLengthFromHeader(const void *data, size_t dlen)
1070 VERIFY_NON_NULL_RET(data, TAG, "data", -1);
1072 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(
1073 ((unsigned char *)data)[0] >> 4);
1075 coap_pdu_t *pdu = coap_new_pdu2(transport, dlen);
1078 OIC_LOG(ERROR, TAG, "outpdu is null");
1079 OIC_LOG_V(ERROR, TAG, "data length: %zu", dlen);
1083 int ret = coap_pdu_parse2((unsigned char *) data, dlen, pdu, transport);
1086 OIC_LOG(ERROR, TAG, "pdu parse failed");
1087 coap_delete_pdu(pdu);
1091 size_t payloadLen = 0;
1092 size_t headerSize = coap_get_tcp_header_length_for_transport(transport);
1093 OIC_LOG_V(DEBUG, TAG, "headerSize : %zu, pdu length : %d",
1094 headerSize, pdu->length);
1095 if (pdu->length > headerSize)
1097 payloadLen = (unsigned char *) pdu->hdr + pdu->length - pdu->data;
1105 static ssize_t sendData(const CAEndpoint_t *endpoint, const void *data,
1106 size_t dlen, const char *fam)
1108 OIC_LOG_V(INFO, TAG, "The length of data that needs to be sent is %zu bytes", dlen);
1110 // #1. find a session info from list.
1111 CASocketFd_t sockFd = CAGetSocketFDFromEndpoint(endpoint);
1112 if (OC_INVALID_SOCKET == sockFd)
1114 // if there is no connection info, connect to remote device.
1115 sockFd = CAConnectTCPSession(endpoint);
1116 if (OC_INVALID_SOCKET == sockFd)
1118 OIC_LOG(ERROR, TAG, "Failed to create tcp session object");
1123 // #2. send data to remote device.
1124 ssize_t remainLen = dlen;
1125 size_t sendCounter = 0;
1129 ssize_t len = send(sockFd, data, remainLen, MSG_DONTWAIT | MSG_NOSIGNAL);
1131 ssize_t len = send(sockFd, data, remainLen, MSG_DONTWAIT);
1135 if (EWOULDBLOCK != errno && EAGAIN != errno)
1137 OIC_LOG_V(ERROR, TAG, "unicast ipv4tcp sendTo failed: %s", strerror(errno));
1138 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1139 len, false, strerror(errno));
1143 OIC_LOG_V(WARNING, TAG, "send blocked. trying %zu attempt from 25", sendCounter);
1144 if(sendCounter >= 25)
1152 } while (remainLen > 0);
1157 OIC_LOG_V(INFO, TAG, "unicast %stcp sendTo is successful: %zu bytes", fam, dlen);
1158 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1163 ssize_t CATCPSendData(CAEndpoint_t *endpoint, const void *data, size_t datalen)
1165 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", -1);
1166 VERIFY_NON_NULL_RET(data, TAG, "data is NULL", -1);
1168 if (caglobals.tcp.ipv6tcpenabled && (endpoint->flags & CA_IPV6))
1170 return sendData(endpoint, data, datalen, "ipv6");
1172 if (caglobals.tcp.ipv4tcpenabled && (endpoint->flags & CA_IPV4))
1174 return sendData(endpoint, data, datalen, "ipv4");
1177 OIC_LOG(ERROR, TAG, "Not supported transport flags");
1181 CAResult_t CAGetTCPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
1183 VERIFY_NON_NULL(info, TAG, "info is NULL");
1184 VERIFY_NON_NULL(size, TAG, "size is NULL");
1186 return CA_NOT_SUPPORTED;
1189 CASocketFd_t CAConnectTCPSession(const CAEndpoint_t *endpoint)
1191 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", OC_INVALID_SOCKET);
1193 // #1. create TCP server object
1194 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
1197 OIC_LOG(ERROR, TAG, "Out of memory");
1198 return OC_INVALID_SOCKET;
1200 memcpy(svritem->sep.endpoint.addr, endpoint->addr, sizeof(svritem->sep.endpoint.addr));
1201 svritem->sep.endpoint.adapter = endpoint->adapter;
1202 svritem->sep.endpoint.port = endpoint->port;
1203 svritem->sep.endpoint.flags = endpoint->flags;
1204 svritem->sep.endpoint.ifindex = endpoint->ifindex;
1205 svritem->state = CONNECTING;
1206 svritem->isClient = true;
1208 // #2. add TCP connection info to list
1209 oc_mutex_lock(g_mutexObjectList);
1210 if (caglobals.tcp.svrlist)
1212 bool res = u_arraylist_add(caglobals.tcp.svrlist, svritem);
1215 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
1218 oc_mutex_unlock(g_mutexObjectList);
1219 return OC_INVALID_SOCKET;
1222 oc_mutex_unlock(g_mutexObjectList);
1224 // #3. create the socket and connect to TCP server
1225 int family = (svritem->sep.endpoint.flags & CA_IPV6) ? AF_INET6 : AF_INET;
1226 if (CA_STATUS_OK != CATCPCreateSocket(family, svritem))
1228 return OC_INVALID_SOCKET;
1231 // #4. pass the connection information to CA Common Layer.
1232 if (g_connectionCallback)
1234 g_connectionCallback(&(svritem->sep.endpoint), true, svritem->isClient);
1240 CAResult_t CADisconnectTCPSession(size_t index)
1242 CATCPSessionInfo_t *removedData = u_arraylist_remove(caglobals.tcp.svrlist, index);
1245 OIC_LOG(DEBUG, TAG, "there is no data to be removed");
1246 return CA_STATUS_OK;
1249 // close the socket and remove session info in list.
1250 if (removedData->fd >= 0)
1252 shutdown(removedData->fd, SHUT_RDWR);
1253 close(removedData->fd);
1254 removedData->fd = -1;
1255 removedData->state = (CONNECTED == removedData->state) ?
1256 DISCONNECTED : removedData->state;
1258 // pass the connection information to CA Common Layer.
1259 if (g_connectionCallback && DISCONNECTED == removedData->state)
1261 g_connectionCallback(&(removedData->sep.endpoint), false, removedData->isClient);
1264 OICFree(removedData->data);
1265 removedData->data = NULL;
1267 OICFree(removedData);
1270 OIC_LOG(DEBUG, TAG, "data is removed from session list");
1272 if (caglobals.server && MAX_CONNECTION_COUNTS == u_arraylist_length(caglobals.tcp.svrlist) + 1)
1274 CATCPInitializeSocket();
1276 return CA_STATUS_OK;
1279 void CATCPDisconnectAll()
1281 OIC_LOG(DEBUG, TAG, "IN - CATCPDisconnectAll");
1283 oc_mutex_lock(g_mutexObjectList);
1285 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1286 for (ssize_t index = length; index > 0; index--)
1288 // disconnect session from remote device.
1289 CADisconnectTCPSession(index - 1);
1292 u_arraylist_destroy(caglobals.tcp.svrlist);
1293 caglobals.tcp.svrlist = NULL;
1295 oc_mutex_unlock(g_mutexObjectList);
1298 CAcloseSslConnectionAll(CA_ADAPTER_TCP);
1301 OIC_LOG(DEBUG, TAG, "OUT - CATCPDisconnectAll");
1304 CATCPSessionInfo_t *CAGetTCPSessionInfoFromEndpoint(const CAEndpoint_t *endpoint, size_t *index)
1306 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", NULL);
1307 VERIFY_NON_NULL_RET(index, TAG, "index is NULL", NULL);
1309 OIC_LOG_V(DEBUG, TAG, "Looking for [%s:%d]", endpoint->addr, endpoint->port);
1311 // get connection info from list
1312 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1313 for (size_t i = 0; i < length; i++)
1315 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1316 caglobals.tcp.svrlist, i);
1322 if (!strncmp(svritem->sep.endpoint.addr, endpoint->addr,
1323 sizeof(svritem->sep.endpoint.addr))
1324 && (svritem->sep.endpoint.port == endpoint->port)
1325 && (svritem->sep.endpoint.flags & endpoint->flags))
1327 OIC_LOG(DEBUG, TAG, "Found in session list");
1333 OIC_LOG(DEBUG, TAG, "Session not found");
1337 CASocketFd_t CAGetSocketFDFromEndpoint(const CAEndpoint_t *endpoint)
1339 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", OC_INVALID_SOCKET);
1341 OIC_LOG_V(DEBUG, TAG, "Looking for [%s:%d]", endpoint->addr, endpoint->port);
1343 // get connection info from list.
1344 oc_mutex_lock(g_mutexObjectList);
1345 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1346 for (size_t i = 0; i < length; i++)
1348 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1349 caglobals.tcp.svrlist, i);
1355 if (!strncmp(svritem->sep.endpoint.addr, endpoint->addr,
1356 sizeof(svritem->sep.endpoint.addr))
1357 && (svritem->sep.endpoint.port == endpoint->port)
1358 && (svritem->sep.endpoint.flags & endpoint->flags))
1360 oc_mutex_unlock(g_mutexObjectList);
1361 OIC_LOG(DEBUG, TAG, "Found in session list");
1366 oc_mutex_unlock(g_mutexObjectList);
1367 OIC_LOG(DEBUG, TAG, "Session not found");
1368 return OC_INVALID_SOCKET;
1371 CATCPSessionInfo_t *CAGetSessionInfoFromFD(int fd, size_t *index)
1373 oc_mutex_lock(g_mutexObjectList);
1375 // check from the last item.
1376 CATCPSessionInfo_t *svritem = NULL;
1377 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1378 for (size_t i = 0; i < length; i++)
1380 svritem = (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
1382 if (svritem && svritem->fd == fd)
1385 oc_mutex_unlock(g_mutexObjectList);
1390 oc_mutex_unlock(g_mutexObjectList);
1395 CAResult_t CASearchAndDeleteTCPSession(const CAEndpoint_t *endpoint)
1397 oc_mutex_lock(g_mutexObjectList);
1399 CAResult_t result = CA_STATUS_OK;
1401 CATCPSessionInfo_t *svritem = CAGetTCPSessionInfoFromEndpoint(endpoint, &index);
1404 result = CADisconnectTCPSession(index);
1405 if (CA_STATUS_OK != result)
1407 OIC_LOG_V(ERROR, TAG, "CADisconnectTCPSession failed, result[%d]", result);
1411 oc_mutex_unlock(g_mutexObjectList);
1415 void CATCPCloseInProgressConnections()
1417 OIC_LOG(INFO, TAG, "IN - CATCPCloseInProgressConnections");
1419 oc_mutex_lock(g_mutexObjectList);
1421 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1422 for (size_t index = 0; index < length; index++)
1424 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1425 caglobals.tcp.svrlist, index);
1431 // Session which are connecting state
1432 if (svritem->fd >= 0 && svritem->state == CONNECTING)
1434 shutdown(svritem->fd, SHUT_RDWR);
1437 svritem->state = DISCONNECTED;
1441 oc_mutex_unlock(g_mutexObjectList);
1443 OIC_LOG(INFO, TAG, "OUT - CATCPCloseInProgressConnections");
1446 size_t CAGetTotalLengthFromHeader(const unsigned char *recvBuffer)
1448 OIC_LOG(DEBUG, TAG, "IN - CAGetTotalLengthFromHeader");
1450 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(
1451 ((unsigned char *)recvBuffer)[0] >> 4);
1452 size_t optPaylaodLen = coap_get_length_from_header((unsigned char *)recvBuffer,
1454 size_t headerLen = coap_get_tcp_header_length((unsigned char *)recvBuffer);
1456 OIC_LOG_V(DEBUG, TAG, "option/paylaod length [%zu]", optPaylaodLen);
1457 OIC_LOG_V(DEBUG, TAG, "header length [%zu]", headerLen);
1458 OIC_LOG_V(DEBUG, TAG, "total data length [%zu]", headerLen + optPaylaodLen);
1460 OIC_LOG(DEBUG, TAG, "OUT - CAGetTotalLengthFromHeader");
1461 return headerLen + optPaylaodLen;
1464 void CATCPSetErrorHandler(CATCPErrorHandleCallback errorHandleCallback)
1466 g_tcpErrorHandler = errorHandleCallback;