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 oc_mutex_lock(g_mutexObjectList);
292 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
293 for (size_t i = 0; i < length; i++)
295 CATCPSessionInfo_t *svritem =
296 (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
297 if (svritem && svritem->fd >= 0)
299 if (FD_ISSET(svritem->fd, readFds))
301 CAReceiveMessage(svritem->fd);
305 oc_mutex_unlock(g_mutexObjectList);
309 static void CAAcceptConnection(CATransportFlags_t flag, CASocket_t *sock)
311 OIC_LOG_V(INFO, TAG, "In %s", __func__);
312 VERIFY_NON_NULL_VOID(sock, TAG, "sock is NULL");
314 if (MAX_CONNECTION_COUNTS == u_arraylist_length(caglobals.tcp.svrlist))
316 OIC_LOG_V(INFO, TAG, "Exceeding the max connection counts limit, close listening port");
318 sock->fd = OC_INVALID_SOCKET;
322 struct sockaddr_storage clientaddr;
323 socklen_t clientlen = sizeof (struct sockaddr_in);
326 clientlen = sizeof(struct sockaddr_in6);
329 CASocketFd_t sockfd = accept(sock->fd, (struct sockaddr *)&clientaddr, &clientlen);
330 if (OC_INVALID_SOCKET != sockfd)
332 CATCPSessionInfo_t *svritem =
333 (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
336 OIC_LOG(ERROR, TAG, "Out of memory");
341 svritem->fd = sockfd;
342 svritem->sep.endpoint.flags = flag;
343 svritem->sep.endpoint.adapter = CA_ADAPTER_TCP;
344 svritem->state = CONNECTED;
345 svritem->isClient = false;
346 CAConvertAddrToName((struct sockaddr_storage *)&clientaddr, clientlen,
347 svritem->sep.endpoint.addr, &svritem->sep.endpoint.port);
349 oc_mutex_lock(g_mutexObjectList);
350 bool result = u_arraylist_add(caglobals.tcp.svrlist, svritem);
353 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
356 oc_mutex_unlock(g_mutexObjectList);
359 oc_mutex_unlock(g_mutexObjectList);
363 // pass the connection information to CA Common Layer.
364 if (g_connectionCallback)
366 g_connectionCallback(&(svritem->sep.endpoint), true, svritem->isClient);
369 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
373 * Clean socket state data
375 * @param[in/out] item - socket state data
377 void CACleanData(CATCPSessionInfo_t *svritem)
381 OICFree(svritem->data);
382 svritem->data = NULL;
387 svritem->totalLen = 0;
389 svritem->protocol = UNKNOWN;
394 * Construct CoAP header and payload from buffer
396 * @param[in] svritem - used socket, buffer, current received message length and protocol
397 * @param[in/out] data - data buffer, this value is updated as data is copied to svritem
398 * @param[in/out] dataLength - length of data, this value decreased as data is copied to svritem
399 * @return - CA_STATUS_OK or appropriate error code
401 CAResult_t CAConstructCoAP(CATCPSessionInfo_t *svritem, unsigned char **data,
404 OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
406 if (NULL == svritem || NULL == data || NULL == dataLength)
408 OIC_LOG(ERROR, TAG, "Invalid input parameter(NULL)");
409 return CA_STATUS_INVALID_PARAM;
412 unsigned char *inBuffer = *data;
413 size_t inLen = *dataLength;
414 OIC_LOG_V(DEBUG, TAG, "before-datalength : %u", *dataLength);
416 if (NULL == svritem->data && inLen > 0)
418 // allocate memory for message header (CoAP header size because it is bigger)
419 svritem->data = (unsigned char *) OICCalloc(1, COAP_MAX_HEADER_SIZE);
420 if (NULL == svritem->data)
422 OIC_LOG(ERROR, TAG, "OICCalloc - out of memory");
423 return CA_MEMORY_ALLOC_FAILED;
426 // copy 1 byte to parse coap header length
427 memcpy(svritem->data, inBuffer, 1);
429 svritem->bufLen = COAP_MAX_HEADER_SIZE;
434 //if not enough data received - read them on next CAFillHeader() call
440 //if enough data received - parse header
441 svritem->protocol = COAP;
443 //seems CoAP data received. read full coap header.
444 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(svritem->data[0] >> 4);
445 size_t headerLen = coap_get_tcp_header_length_for_transport(transport);
449 if (svritem->len < headerLen)
451 copyLen = headerLen - svritem->len;
457 //read required bytes to have full CoAP header
458 memcpy(svritem->data + svritem->len, inBuffer, copyLen);
459 svritem->len += copyLen;
463 //if not enough data received - read them on next CAFillHeader() call
464 if (svritem->len < headerLen)
468 OIC_LOG(DEBUG, TAG, "CoAP header received partially. Wait for rest header data");
472 //calculate CoAP message length
473 svritem->totalLen = CAGetTotalLengthFromHeader(svritem->data);
479 // Calculate length of data to be copied.
480 copyLen = svritem->totalLen - svritem->len;
486 // Is buffer not big enough for remaining data ?
487 if (svritem->len + copyLen > svritem->bufLen)
489 // Resize buffer to accommodate enough space
490 size_t extLen = svritem->totalLen - svritem->bufLen;
491 if (extLen > COAP_TCP_MAX_BUFFER_CHUNK_SIZE)
493 extLen = COAP_TCP_MAX_BUFFER_CHUNK_SIZE;
496 // Allocate required memory
497 unsigned char *buffer = OICRealloc(svritem->data, svritem->bufLen + extLen);
500 OIC_LOG(ERROR, TAG, "OICRealloc - out of memory");
501 return CA_MEMORY_ALLOC_FAILED;
504 svritem->data = buffer;
505 svritem->bufLen += extLen;
508 // Read required bytes to have full CoAP payload
509 memcpy(svritem->data + svritem->len, inBuffer, copyLen);
510 svritem->len += copyLen;
518 OIC_LOG_V(DEBUG, TAG, "after-datalength : %u", *dataLength);
519 OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
523 static void CAReceiveMessage(int fd)
525 CAResult_t res = CA_STATUS_OK;
527 //get remote device information from file descriptor.
529 CATCPSessionInfo_t *svritem = CAGetSessionInfoFromFD(fd, &index);
532 OIC_LOG(ERROR, TAG, "there is no connection information in list");
539 if (svritem->sep.endpoint.flags & CA_SECURE)
541 svritem->protocol = TLS;
545 size_t tlsLength = 0;
547 if (TLS_HEADER_SIZE > svritem->tlsLen)
549 nbRead = TLS_HEADER_SIZE - svritem->tlsLen;
553 //[3][4] bytes in tls header are tls payload length
554 tlsLength = TLS_HEADER_SIZE +
555 (size_t)((svritem->tlsdata[3] << 8) | svritem->tlsdata[4]);
556 OIC_LOG_V(DEBUG, TAG, "total tls length = %u", tlsLength);
557 if (tlsLength > sizeof(svritem->tlsdata))
559 OIC_LOG_V(ERROR, TAG, "total tls length is too big (buffer size : %u)",
560 sizeof(svritem->tlsdata));
561 if (CA_STATUS_OK != CAcloseSslConnection(&svritem->sep.endpoint))
563 OIC_LOG(ERROR, TAG, "Failed to close TLS session");
565 CASearchAndDeleteTCPSession(&(svritem->sep.endpoint));
568 nbRead = tlsLength - svritem->tlsLen;
571 len = recv(fd, svritem->tlsdata + svritem->tlsLen, nbRead, 0);
574 OIC_LOG_V(ERROR, TAG, "recv failed %s", strerror(errno));
575 res = CA_RECEIVE_FAILED;
579 OIC_LOG(INFO, TAG, "Received disconnect from peer. Close connection");
580 svritem->state = DISCONNECTED;
581 res = CA_DESTINATION_DISCONNECTED;
585 svritem->tlsLen += len;
586 OIC_LOG_V(DEBUG, TAG, "nb_read : %u bytes , recv() : %d bytes, svritem->tlsLen : %u bytes",
587 nbRead, len, svritem->tlsLen);
588 if (tlsLength > 0 && tlsLength == svritem->tlsLen)
590 //when successfully read data - pass them to callback.
591 res = CAdecryptSsl(&svritem->sep, (uint8_t *)svritem->tlsdata, svritem->tlsLen);
593 OIC_LOG_V(INFO, TAG, "%s: CAdecryptSsl returned %d", __func__, res);
601 svritem->protocol = COAP;
603 // svritem->tlsdata can also be used as receiving buffer in case of raw tcp
604 len = recv(fd, svritem->tlsdata, sizeof(svritem->tlsdata), 0);
607 OIC_LOG_V(ERROR, TAG, "recv failed %s", strerror(errno));
608 res = CA_RECEIVE_FAILED;
612 OIC_LOG(INFO, TAG, "Received disconnect from peer. Close connection");
613 res = CA_DESTINATION_DISCONNECTED;
617 OIC_LOG_V(DEBUG, TAG, "recv() : %d bytes", len);
618 //when successfully read data - pass them to callback.
619 if (g_packetReceivedCallback)
621 res = g_packetReceivedCallback(&svritem->sep, svritem->tlsdata, len);
626 //disconnect session and clean-up data if any error occurs
627 if (res != CA_STATUS_OK)
629 if (CA_STATUS_OK != CATCPDisconnectSession(&svritem->sep.endpoint))
631 CASearchAndDeleteTCPSession(&svritem->sep.endpoint);
632 OIC_LOG(ERROR, TAG, "Failed to disconnect TCP session");
639 static ssize_t CAWakeUpForReadFdsUpdate(const char *host)
641 if (caglobals.tcp.connectionFds[1] != -1)
646 len = write(caglobals.tcp.connectionFds[1], host, strlen(host));
647 } while ((len == -1) && (errno == EINTR));
649 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
651 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
658 static CAResult_t CATCPConvertNameToAddr(int family, const char *host, uint16_t port,
659 struct sockaddr_storage *sockaddr)
661 struct addrinfo *addrs = NULL;
662 struct addrinfo hints = { .ai_family = family,
663 .ai_protocol = IPPROTO_TCP,
664 .ai_socktype = SOCK_STREAM,
665 .ai_flags = AI_NUMERICHOST };
667 int r = getaddrinfo(host, NULL, &hints, &addrs);
672 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: errno %s", strerror(errno));
676 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: %s", gai_strerror(r));
679 return CA_STATUS_FAILED;
681 // assumption: in this case, getaddrinfo will only return one addrinfo
682 // or first is the one we want.
683 if (addrs[0].ai_family == AF_INET6)
685 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in6));
686 ((struct sockaddr_in6 *)sockaddr)->sin6_port = htons(port);
690 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in));
691 ((struct sockaddr_in *)sockaddr)->sin_port = htons(port);
697 static CAResult_t CATCPCreateSocket(int family, CATCPSessionInfo_t *svritem)
699 VERIFY_NON_NULL(svritem, TAG, "svritem is NULL");
701 OIC_LOG_V(INFO, TAG, "try to connect with [%s:%u]",
702 svritem->sep.endpoint.addr, svritem->sep.endpoint.port);
704 // #1. create tcp socket.
705 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
708 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", strerror(errno));
709 return CA_SOCKET_OPERATION_FAILED;
713 // #2. convert address from string to binary.
714 struct sockaddr_storage sa = { .ss_family = family };
715 CAResult_t res = CATCPConvertNameToAddr(family, svritem->sep.endpoint.addr,
716 svritem->sep.endpoint.port, &sa);
717 if (CA_STATUS_OK != res)
719 OIC_LOG(ERROR, TAG, "convert name to sockaddr failed");
720 return CA_SOCKET_OPERATION_FAILED;
723 // #3. set socket length.
724 socklen_t socklen = 0;
725 if (sa.ss_family == AF_INET6)
727 struct sockaddr_in6 *sock6 = (struct sockaddr_in6 *)&sa;
728 if (!sock6->sin6_scope_id)
730 sock6->sin6_scope_id = svritem->sep.endpoint.ifindex;
732 socklen = sizeof(struct sockaddr_in6);
736 socklen = sizeof(struct sockaddr_in);
739 // #4. connect to remote server device.
740 if (connect(fd, (struct sockaddr *)&sa, socklen) < 0)
742 OIC_LOG_V(ERROR, TAG, "failed to connect socket, %s", strerror(errno));
743 CALogSendStateInfo(svritem->sep.endpoint.adapter, svritem->sep.endpoint.addr,
744 svritem->sep.endpoint.port, 0, false, strerror(errno));
745 return CA_SOCKET_OPERATION_FAILED;
748 OIC_LOG(INFO, TAG, "connect socket success");
749 svritem->state = CONNECTED;
750 CHECKFD(svritem->fd);
751 ssize_t len = CAWakeUpForReadFdsUpdate(svritem->sep.endpoint.addr);
754 OIC_LOG(ERROR, TAG, "wakeup receive thread failed");
755 return CA_SOCKET_OPERATION_FAILED;
760 static CASocketFd_t CACreateAcceptSocket(int family, CASocket_t *sock)
762 VERIFY_NON_NULL_RET(sock, TAG, "sock", -1);
764 if (OC_INVALID_SOCKET != sock->fd)
766 OIC_LOG(DEBUG, TAG, "accept socket created already");
770 socklen_t socklen = 0;
771 struct sockaddr_storage server = { .ss_family = family };
773 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
774 if (OC_INVALID_SOCKET == fd)
776 OIC_LOG(ERROR, TAG, "Failed to create socket");
780 if (family == AF_INET6)
782 // the socket is restricted to sending and receiving IPv6 packets only.
784 //TODO: enable once IPv6 is supported
786 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on)))
788 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", strerror(errno));
792 ((struct sockaddr_in6 *)&server)->sin6_port = htons(sock->port);
793 socklen = sizeof (struct sockaddr_in6);
797 ((struct sockaddr_in *)&server)->sin_port = htons(sock->port);
798 socklen = sizeof (struct sockaddr_in);
802 if (-1 == setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)))
804 OIC_LOG(ERROR, TAG, "setsockopt SO_REUSEADDR");
808 if (-1 == bind(fd, (struct sockaddr *)&server, socklen))
810 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", strerror(errno));
814 if (listen(fd, caglobals.tcp.listenBacklog) != 0)
816 OIC_LOG(ERROR, TAG, "listen() error");
820 if (sock->port) // use the given port
823 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, OPTVAL_T(&on), sizeof (on)))
825 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", strerror(errno));
827 return OC_INVALID_SOCKET;
830 else // return the assigned port
832 if (-1 == getsockname(fd, (struct sockaddr *)&server, &socklen))
834 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", strerror(errno));
837 sock->port = ntohs(family == AF_INET6 ?
838 ((struct sockaddr_in6 *)&server)->sin6_port :
839 ((struct sockaddr_in *)&server)->sin_port);
849 return OC_INVALID_SOCKET;
852 static void CAInitializePipe(int *fds)
855 // TODO: Remove temporary workaround once F_GETFD / F_SETFD support is in TizenRT
856 /* Temporary workaround: By pass F_GETFD / F_SETFD */
866 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
871 ret = fcntl(fds[0], F_GETFD);
874 ret = fcntl(fds[0], F_SETFD, ret|FD_CLOEXEC);
878 ret = fcntl(fds[1], F_GETFD);
882 ret = fcntl(fds[1], F_SETFD, ret|FD_CLOEXEC);
892 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
898 #define NEWSOCKET(FAMILY, NAME) \
899 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
900 if (caglobals.tcp.NAME.fd == -1) \
902 caglobals.tcp.NAME.port = 0; \
903 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
905 CHECKFD(caglobals.tcp.NAME.fd);
907 void CATCPInitializeSocket()
910 NEWSOCKET(AF_INET, ipv4);
912 NEWSOCKET(AF_INET, ipv4s);
915 //TODO Enable once TizenRT supports IPv6
918 NEWSOCKET(AF_INET6, ipv6);
920 NEWSOCKET(AF_INET6, ipv6s);
924 OIC_LOG_V(DEBUG, TAG, "IPv4 socket fd=%d, port=%d",
925 caglobals.tcp.ipv4.fd, caglobals.tcp.ipv4.port);
926 OIC_LOG_V(DEBUG, TAG, "IPv6 socket fd=%d, port=%d",
927 caglobals.tcp.ipv6.fd, caglobals.tcp.ipv6.port);
929 OIC_LOG_V(DEBUG, TAG, "IPv4 secure socket fd=%d, port=%d",
930 caglobals.tcp.ipv4s.fd, caglobals.tcp.ipv4s.port);
931 OIC_LOG_V(DEBUG, TAG, "IPv6 secure socket fd=%d, port=%d",
932 caglobals.tcp.ipv6s.fd, caglobals.tcp.ipv6s.port);
936 CAResult_t CATCPStartServer(const ca_thread_pool_t threadPool)
938 oc_mutex_lock(g_mutexObjectList);
939 if (caglobals.tcp.started)
941 oc_mutex_unlock(g_mutexObjectList);
942 OIC_LOG(INFO, TAG, "Adapter is started already");
946 g_threadPool = threadPool;
948 if (!caglobals.tcp.ipv4tcpenabled)
950 caglobals.tcp.ipv4tcpenabled = true; // only needed to run CA tests
952 if (!caglobals.tcp.ipv6tcpenabled)
954 caglobals.tcp.ipv6tcpenabled = true; // only needed to run CA tests
957 caglobals.tcp.terminate = false;
958 if (!caglobals.tcp.svrlist)
960 caglobals.tcp.svrlist = u_arraylist_create();
963 if (caglobals.server)
965 CATCPInitializeSocket();
968 // create pipe for fast shutdown
969 CAInitializePipe(caglobals.tcp.shutdownFds);
970 CHECKFD(caglobals.tcp.shutdownFds[0]);
971 CHECKFD(caglobals.tcp.shutdownFds[1]);
973 // create pipe for connection event
974 CAInitializePipe(caglobals.tcp.connectionFds);
975 CHECKFD(caglobals.tcp.connectionFds[0]);
976 CHECKFD(caglobals.tcp.connectionFds[1]);
978 CAResult_t res = CA_STATUS_OK;
980 res = ca_thread_pool_add_task(g_threadPool, CAReceiveHandler, NULL, NULL);
982 res = ca_thread_pool_add_task(g_threadPool, CAReceiveHandler, NULL, NULL,
983 "IoT_TCPReceive", CONFIG_IOTIVITY_TCPRECEIVE_PTHREAD_STACKSIZE);
985 if (CA_STATUS_OK != res)
987 oc_mutex_unlock(g_mutexObjectList);
988 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
993 caglobals.tcp.started = true;
994 oc_mutex_unlock(g_mutexObjectList);
996 OIC_LOG(INFO, TAG, "CAReceiveHandler thread started successfully.");
1000 void CATCPStopServer()
1002 oc_mutex_lock(g_mutexObjectList);
1003 if (caglobals.tcp.terminate)
1005 oc_mutex_unlock(g_mutexObjectList);
1006 OIC_LOG(INFO, TAG, "Adapter is not enabled");
1010 // set terminate flag.
1011 caglobals.tcp.terminate = true;
1014 if (caglobals.tcp.started)
1016 oc_cond_wait(g_condObjectList, g_mutexObjectList);
1017 caglobals.tcp.started = false;
1021 // close accept socket.
1022 #ifndef __WITH_TLS__
1026 CLOSE_SOCKET(ipv4s);
1027 CLOSE_SOCKET(ipv6s);
1030 close(caglobals.tcp.connectionFds[1]);
1031 close(caglobals.tcp.connectionFds[0]);
1032 caglobals.tcp.connectionFds[1] = OC_INVALID_SOCKET;
1033 caglobals.tcp.connectionFds[0] = OC_INVALID_SOCKET;
1035 if (caglobals.tcp.shutdownFds[1] != OC_INVALID_SOCKET)
1037 close(caglobals.tcp.shutdownFds[1]);
1038 caglobals.tcp.shutdownFds[1] = OC_INVALID_SOCKET;
1039 // receive thread will stop immediately
1041 if (caglobals.tcp.started)
1043 oc_cond_wait(g_condObjectList, g_mutexObjectList);
1044 caglobals.tcp.started = false;
1046 if (caglobals.tcp.shutdownFds[0] != OC_INVALID_SOCKET)
1048 close(caglobals.tcp.shutdownFds[0]);
1049 caglobals.tcp.shutdownFds[0] = OC_INVALID_SOCKET;
1052 oc_mutex_unlock(g_mutexObjectList);
1054 CATCPDisconnectAll();
1057 OIC_LOG(INFO, TAG, "Adapter terminated successfully");
1060 void CATCPSetPacketReceiveCallback(CATCPPacketReceivedCallback callback)
1062 g_packetReceivedCallback = callback;
1065 void CATCPSetConnectionChangedCallback(CATCPConnectionHandleCallback connHandler)
1067 g_connectionCallback = connHandler;
1070 size_t CACheckPayloadLengthFromHeader(const void *data, size_t dlen)
1072 VERIFY_NON_NULL_RET(data, TAG, "data", -1);
1074 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(
1075 ((unsigned char *)data)[0] >> 4);
1077 coap_pdu_t *pdu = coap_new_pdu2(transport, dlen);
1080 OIC_LOG(ERROR, TAG, "outpdu is null");
1081 OIC_LOG_V(ERROR, TAG, "data length: %zu", dlen);
1085 int ret = coap_pdu_parse2((unsigned char *) data, dlen, pdu, transport);
1088 OIC_LOG(ERROR, TAG, "pdu parse failed");
1089 coap_delete_pdu(pdu);
1093 size_t payloadLen = 0;
1094 size_t headerSize = coap_get_tcp_header_length_for_transport(transport);
1095 OIC_LOG_V(DEBUG, TAG, "headerSize : %zu, pdu length : %d",
1096 headerSize, pdu->length);
1097 if (pdu->length > headerSize)
1099 payloadLen = (unsigned char *) pdu->hdr + pdu->length - pdu->data;
1107 static ssize_t sendData(const CAEndpoint_t *endpoint, const void *data,
1108 size_t dlen, const char *fam)
1110 OIC_LOG_V(INFO, TAG, "The length of data that needs to be sent is %zu bytes", dlen);
1112 // #1. find a session info from list.
1113 CASocketFd_t sockFd = CAGetSocketFDFromEndpoint(endpoint);
1114 if (OC_INVALID_SOCKET == sockFd)
1116 // if there is no connection info, connect to remote device.
1117 sockFd = CAConnectTCPSession(endpoint);
1118 if (OC_INVALID_SOCKET == sockFd)
1120 OIC_LOG(ERROR, TAG, "Failed to create tcp session object");
1125 // #2. send data to remote device.
1126 ssize_t remainLen = dlen;
1127 size_t sendCounter = 0;
1131 ssize_t len = send(sockFd, data, remainLen, MSG_DONTWAIT | MSG_NOSIGNAL);
1133 ssize_t len = send(sockFd, data, remainLen, MSG_DONTWAIT);
1137 if (EWOULDBLOCK != errno && EAGAIN != errno)
1139 OIC_LOG_V(ERROR, TAG, "unicast ipv4tcp sendTo failed: %s", strerror(errno));
1140 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1141 len, false, strerror(errno));
1145 OIC_LOG_V(WARNING, TAG, "send blocked. trying %zu attempt from 25", sendCounter);
1146 if(sendCounter >= 25)
1154 } while (remainLen > 0);
1159 OIC_LOG_V(INFO, TAG, "unicast %stcp sendTo is successful: %zu bytes", fam, dlen);
1160 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1165 ssize_t CATCPSendData(CAEndpoint_t *endpoint, const void *data, size_t datalen)
1167 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", -1);
1168 VERIFY_NON_NULL_RET(data, TAG, "data is NULL", -1);
1170 if (caglobals.tcp.ipv6tcpenabled && (endpoint->flags & CA_IPV6))
1172 return sendData(endpoint, data, datalen, "ipv6");
1174 if (caglobals.tcp.ipv4tcpenabled && (endpoint->flags & CA_IPV4))
1176 return sendData(endpoint, data, datalen, "ipv4");
1179 OIC_LOG(ERROR, TAG, "Not supported transport flags");
1183 CAResult_t CAGetTCPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
1185 VERIFY_NON_NULL(info, TAG, "info is NULL");
1186 VERIFY_NON_NULL(size, TAG, "size is NULL");
1188 return CA_NOT_SUPPORTED;
1191 CASocketFd_t CAConnectTCPSession(const CAEndpoint_t *endpoint)
1193 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", OC_INVALID_SOCKET);
1195 // #1. create TCP server object
1196 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
1199 OIC_LOG(ERROR, TAG, "Out of memory");
1200 return OC_INVALID_SOCKET;
1202 memcpy(svritem->sep.endpoint.addr, endpoint->addr, sizeof(svritem->sep.endpoint.addr));
1203 svritem->sep.endpoint.adapter = endpoint->adapter;
1204 svritem->sep.endpoint.port = endpoint->port;
1205 svritem->sep.endpoint.flags = endpoint->flags;
1206 svritem->sep.endpoint.ifindex = endpoint->ifindex;
1207 svritem->state = CONNECTING;
1208 svritem->isClient = true;
1210 // #2. add TCP connection info to list
1211 oc_mutex_lock(g_mutexObjectList);
1212 if (caglobals.tcp.svrlist)
1214 bool res = u_arraylist_add(caglobals.tcp.svrlist, svritem);
1217 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
1220 oc_mutex_unlock(g_mutexObjectList);
1221 return OC_INVALID_SOCKET;
1224 oc_mutex_unlock(g_mutexObjectList);
1226 // #3. create the socket and connect to TCP server
1227 int family = (svritem->sep.endpoint.flags & CA_IPV6) ? AF_INET6 : AF_INET;
1228 if (CA_STATUS_OK != CATCPCreateSocket(family, svritem))
1230 return OC_INVALID_SOCKET;
1233 // #4. pass the connection information to CA Common Layer.
1234 if (g_connectionCallback)
1236 g_connectionCallback(&(svritem->sep.endpoint), true, svritem->isClient);
1242 CAResult_t CADisconnectTCPSession(size_t index)
1244 CATCPSessionInfo_t *removedData = u_arraylist_remove(caglobals.tcp.svrlist, index);
1247 OIC_LOG(DEBUG, TAG, "there is no data to be removed");
1248 return CA_STATUS_OK;
1251 // close the socket and remove session info in list.
1252 if (removedData->fd >= 0)
1254 shutdown(removedData->fd, SHUT_RDWR);
1255 close(removedData->fd);
1256 removedData->fd = -1;
1257 removedData->state = (CONNECTED == removedData->state) ?
1258 DISCONNECTED : removedData->state;
1260 // pass the connection information to CA Common Layer.
1261 if (g_connectionCallback && DISCONNECTED == removedData->state)
1263 g_connectionCallback(&(removedData->sep.endpoint), false, removedData->isClient);
1266 OICFree(removedData->data);
1267 removedData->data = NULL;
1269 OICFree(removedData);
1272 OIC_LOG(DEBUG, TAG, "data is removed from session list");
1274 if (caglobals.server && MAX_CONNECTION_COUNTS == u_arraylist_length(caglobals.tcp.svrlist) + 1)
1276 CATCPInitializeSocket();
1278 return CA_STATUS_OK;
1281 void CATCPDisconnectAll()
1283 OIC_LOG(DEBUG, TAG, "IN - CATCPDisconnectAll");
1285 oc_mutex_lock(g_mutexObjectList);
1287 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1288 for (ssize_t index = length; index > 0; index--)
1290 // disconnect session from remote device.
1291 CADisconnectTCPSession(index - 1);
1294 u_arraylist_destroy(caglobals.tcp.svrlist);
1295 caglobals.tcp.svrlist = NULL;
1297 oc_mutex_unlock(g_mutexObjectList);
1300 CAcloseSslConnectionAll(CA_ADAPTER_TCP);
1303 OIC_LOG(DEBUG, TAG, "OUT - CATCPDisconnectAll");
1306 CATCPSessionInfo_t *CAGetTCPSessionInfoFromEndpoint(const CAEndpoint_t *endpoint, size_t *index)
1308 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", NULL);
1309 VERIFY_NON_NULL_RET(index, TAG, "index is NULL", NULL);
1311 OIC_LOG_V(DEBUG, TAG, "Looking for [%s:%d]", endpoint->addr, endpoint->port);
1313 // get connection info from list
1314 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1315 for (size_t i = 0; i < length; i++)
1317 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1318 caglobals.tcp.svrlist, i);
1324 if (!strncmp(svritem->sep.endpoint.addr, endpoint->addr,
1325 sizeof(svritem->sep.endpoint.addr))
1326 && (svritem->sep.endpoint.port == endpoint->port)
1327 && (svritem->sep.endpoint.flags & endpoint->flags))
1329 OIC_LOG(DEBUG, TAG, "Found in session list");
1335 OIC_LOG(DEBUG, TAG, "Session not found");
1339 CASocketFd_t CAGetSocketFDFromEndpoint(const CAEndpoint_t *endpoint)
1341 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", OC_INVALID_SOCKET);
1343 OIC_LOG_V(DEBUG, TAG, "Looking for [%s:%d]", endpoint->addr, endpoint->port);
1345 // get connection info from list.
1346 oc_mutex_lock(g_mutexObjectList);
1347 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1348 for (size_t i = 0; i < length; i++)
1350 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1351 caglobals.tcp.svrlist, i);
1357 if (!strncmp(svritem->sep.endpoint.addr, endpoint->addr,
1358 sizeof(svritem->sep.endpoint.addr))
1359 && (svritem->sep.endpoint.port == endpoint->port)
1360 && (svritem->sep.endpoint.flags & endpoint->flags))
1362 oc_mutex_unlock(g_mutexObjectList);
1363 OIC_LOG(DEBUG, TAG, "Found in session list");
1368 oc_mutex_unlock(g_mutexObjectList);
1369 OIC_LOG(DEBUG, TAG, "Session not found");
1370 return OC_INVALID_SOCKET;
1373 CATCPSessionInfo_t *CAGetSessionInfoFromFD(int fd, size_t *index)
1376 // check from the last item.
1377 CATCPSessionInfo_t *svritem = NULL;
1378 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1379 for (size_t i = 0; i < length; i++)
1381 svritem = (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
1383 if (svritem && svritem->fd == fd)
1386 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;