1 /* ****************************************************************
3 * Copyright 2014 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 #ifndef __APPLE_USE_RFC_3542
22 #define __APPLE_USE_RFC_3542 // for PKTINFO
25 #define _GNU_SOURCE // for in6_pktinfo
29 #include <tinyara/config.h>
33 #include "iotivity_config.h"
34 #include <sys/types.h>
36 #include <sys/socket.h>
49 #if !defined(_MSC_VER)
51 #endif //!defined(_MSC_VER)
52 #include <sys/types.h>
55 #include <sys/select.h>
56 #include <arpa/inet.h>
57 #include <netinet/in.h>
62 #include <linux/netlink.h>
63 #include <linux/rtnetlink.h>
72 #include "caipinterface.h"
73 #include "caipnwmonitor.h"
74 #include "caadapterutils.h"
75 #if defined(__WITH_DTLS__) || defined(__WITH_TLS__)
76 #include "ca_adapter_net_ssl.h"
79 #include "oic_malloc.h"
80 #include "oic_string.h"
92 * Logging tag for module name
94 //#define TAG "OIC_CA_IP_SERVER"
95 #define TAG IP_SERVER_TAG
99 #ifdef CONFIG_NET_LWIP
100 #define SOCK_CLOEXEC 0
102 #define SOCK_CLOEXEC 1
105 #define SELECT_TIMEOUT 1 // select() seconds (and termination latency)
107 #define IPv4_MULTICAST "224.0.1.187"
108 static struct in_addr IPv4MulticastAddress = { 0 };
110 #define IPv6_DOMAINS 16
111 #define MOBILE_INTERFACES 2
112 #define IPv6_MULTICAST_INT "ff01::158"
113 static struct in6_addr IPv6MulticastAddressInt;
114 #define IPv6_MULTICAST_LNK "ff02::158"
115 static struct in6_addr IPv6MulticastAddressLnk;
116 #define IPv6_MULTICAST_RLM "ff03::158"
117 static struct in6_addr IPv6MulticastAddressRlm;
118 #define IPv6_MULTICAST_ADM "ff04::158"
119 static struct in6_addr IPv6MulticastAddressAdm;
120 #define IPv6_MULTICAST_SIT "ff05::158"
121 static struct in6_addr IPv6MulticastAddressSit;
122 #define IPv6_MULTICAST_ORG "ff08::158"
123 static struct in6_addr IPv6MulticastAddressOrg;
124 #define IPv6_MULTICAST_GLB "ff0e::158"
125 static struct in6_addr IPv6MulticastAddressGlb;
127 static char *ipv6mcnames[IPv6_DOMAINS] = {
147 static char *mobileinferfaces[MOBILE_INTERFACES] = {
153 struct in6_addr ipi6_addr;
159 unsigned int ipi_ifindex; /* Interface index */
160 struct in_addr ipi_spec_dst; /* Local address */
161 struct in_addr ipi_addr; /* Header Destination
166 #define RTMGRP_LINK 1
168 #define IPV6_PKTINFO 50
169 #define IPV6_MULTICAST_IF 9
170 #define IPV6_V6ONLY 27
171 #define IPV6_RECVPKTINFO 50
172 #define IPV6_JOIN_GROUP 12
176 * By default, IP multicast datagrams are sent with a time-to-live (TTL) of 1.
177 * An application can choose an initial TTL.
179 static size_t multicastTTL = 1;
182 #define IFF_UP_RUNNING_FLAGS (IFF_UP)
184 char* caips_get_error(){
185 static char buffer[32];
186 snprintf(buffer, 32, "%i", WSAGetLastError());
189 #define CAIPS_GET_ERROR \
192 #define IFF_UP_RUNNING_FLAGS (IFF_UP|IFF_RUNNING)
194 #define CAIPS_GET_ERROR \
197 static CAIPErrorHandleCallback g_ipErrorHandler = NULL;
199 static CAIPPacketReceivedCallback g_packetReceivedCallback = NULL;
201 static void CAFindReadyMessage();
202 #if !defined(WSA_WAIT_EVENT_0)
203 static void CASelectReturned(fd_set *readFds, int ret);
205 static void CAEventReturned(CASocketFd_t socket);
208 static CAResult_t CAReceiveMessage(CASocketFd_t fd, CATransportFlags_t flags);
211 static int cleanup_pop_arg = 1;
213 static void CAIPCleanupHandler(void *arg)
215 OIC_LOG(DEBUG, TAG, "Called clean-up handler");
217 if (caglobals.ip.shutdownFds[0] != OC_INVALID_SOCKET)
219 close(caglobals.ip.shutdownFds[0]);
220 caglobals.ip.shutdownFds[0] = OC_INVALID_SOCKET;
224 static void CAReceiveHandler(void *data)
227 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
229 pthread_cleanup_push(CAIPCleanupHandler, NULL);
231 while (!caglobals.ip.terminate)
233 CAFindReadyMessage();
236 pthread_cleanup_pop(cleanup_pop_arg);
238 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
241 static void CAReceiveHandler(void *data)
244 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
246 while (!caglobals.ip.terminate)
248 CAFindReadyMessage();
251 if (caglobals.ip.shutdownFds[0] != OC_INVALID_SOCKET)
253 close(caglobals.ip.shutdownFds[0]);
254 caglobals.ip.shutdownFds[0] = OC_INVALID_SOCKET;
257 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
261 #if !defined(WSA_WAIT_EVENT_0)
263 #define CLOSE_SOCKET(TYPE) \
264 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
266 close(caglobals.ip.TYPE.fd); \
267 caglobals.ip.TYPE.fd = OC_INVALID_SOCKET; \
270 #define SET(TYPE, FDS) \
271 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
273 FD_SET(caglobals.ip.TYPE.fd, FDS); \
276 #define ISSET(TYPE, FDS, FLAGS) \
277 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET && FD_ISSET(caglobals.ip.TYPE.fd, FDS)) \
279 fd = caglobals.ip.TYPE.fd; \
284 static void CAFindReadyMessage()
287 struct timeval timeout;
289 timeout.tv_sec = caglobals.ip.selectTimeout;
291 struct timeval *tv = caglobals.ip.selectTimeout == -1 ? NULL : &timeout;
303 if (caglobals.ip.shutdownFds[0] != -1)
305 FD_SET(caglobals.ip.shutdownFds[0], &readFds);
308 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
310 FD_SET(caglobals.ip.netlinkFd, &readFds);
313 int ret = select(caglobals.ip.maxfd + 1, &readFds, NULL, NULL, tv);
315 if (caglobals.ip.terminate)
317 OIC_LOG_V(INFO, TAG, "Packet receiver Stop request received.");
321 u_arraylist_t *iflist = CAFindInterfaceChange();
324 uint32_t listLength = u_arraylist_length(iflist);
325 for (uint32_t i = 0; i < listLength; i++)
327 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
330 CAProcessNewInterface(ifitem);
333 u_arraylist_destroy(iflist);
338 CASelectReturned(&readFds, ret);
342 OIC_LOG_V(FATAL, TAG, "select error %s", CAIPS_GET_ERROR);
346 static void CASelectReturned(fd_set *readFds, int ret)
349 CASocketFd_t fd = OC_INVALID_SOCKET;
350 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
352 while (!caglobals.ip.terminate)
354 ISSET(u6, readFds, CA_IPV6)
355 else ISSET(u6s, readFds, CA_IPV6 | CA_SECURE)
356 else ISSET(u4, readFds, CA_IPV4)
357 else ISSET(u4s, readFds, CA_IPV4 | CA_SECURE)
358 else ISSET(m6, readFds, CA_MULTICAST | CA_IPV6)
359 else ISSET(m6s, readFds, CA_MULTICAST | CA_IPV6 | CA_SECURE)
360 else ISSET(m4, readFds, CA_MULTICAST | CA_IPV4)
361 else ISSET(m4s, readFds, CA_MULTICAST | CA_IPV4 | CA_SECURE)
362 else if ((caglobals.ip.netlinkFd != OC_INVALID_SOCKET) && FD_ISSET(caglobals.ip.netlinkFd, readFds))
365 u_arraylist_t *iflist = CAFindInterfaceChange();
368 uint32_t listLength = u_arraylist_length(iflist);
369 for (uint32_t i = 0; i < listLength; i++)
371 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
374 CAProcessNewInterface(ifitem);
377 u_arraylist_destroy(iflist);
383 else if (FD_ISSET(caglobals.ip.shutdownFds[0], readFds))
386 ssize_t len = read(caglobals.ip.shutdownFds[0], buf, sizeof (buf));
398 (void)CAReceiveMessage(fd, flags);
403 #else // if defined(WSA_WAIT_EVENT_0)
405 #define CLOSE_SOCKET(TYPE) \
406 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
408 closesocket(caglobals.ip.TYPE.fd); \
409 caglobals.ip.TYPE.fd = OC_INVALID_SOCKET; \
412 #define PUSH_HANDLE(HANDLE, ARRAY, INDEX) \
414 ARRAY[INDEX] = HANDLE; \
418 // Turn handle into WSAEvent and push to ARRAY
419 #define PUSH_SOCKET(SOCKET, ARRAY, INDEX) \
420 if (SOCKET != OC_INVALID_SOCKET) \
423 NewEvent = WSACreateEvent(); \
424 if (WSA_INVALID_EVENT != NewEvent) \
426 if (0 != WSAEventSelect(SOCKET, NewEvent, FD_READ)) \
428 OIC_LOG_V(ERROR, TAG, "WSAEventSelect failed 0x%08x ", WSAGetLastError()); \
429 if (!WSACloseEvent(NewEvent)) \
431 OIC_LOG_V(ERROR, TAG, "WSACloseEvent(NewEvent) failed 0x%08x", WSAGetLastError()); \
436 PUSH_HANDLE(NewEvent, ARRAY, INDEX); \
441 OIC_LOG_V(ERROR, TAG, "WSACreateEvent(NewEvent) failed 0x%08x", WSAGetLastError()); \
445 #define INSERT_SOCKET(FD, ARRAY, INDEX) \
447 if (OC_INVALID_SOCKET != FD) \
454 // Inserts the socket into the SOCKET_ARRAY and pushes the socket event into EVENT_ARRAY
455 #define PUSH_IP_SOCKET(TYPE, EVENT_ARRAY, SOCKET_ARRAY, INDEX) \
457 if (OC_INVALID_SOCKET != caglobals.ip.TYPE.fd) \
459 INSERT_SOCKET(caglobals.ip.TYPE.fd, SOCKET_ARRAY, INDEX); \
460 PUSH_SOCKET(caglobals.ip.TYPE.fd, EVENT_ARRAY, INDEX); \
464 #define IS_MATCHING_IP_SOCKET(TYPE, SOCKET, FLAGS) \
465 if ((caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) && (caglobals.ip.TYPE.fd == SOCKET)) \
467 fd = caglobals.ip.TYPE.fd; \
471 #define EVENT_ARRAY_SIZE 10
473 static void CAFindReadyMessage()
475 CASocketFd_t socketArray[EVENT_ARRAY_SIZE];
476 HANDLE eventArray[EVENT_ARRAY_SIZE];
480 // socketArray and eventArray should have same number of elements
481 OC_STATIC_ASSERT(_countof(socketArray) == _countof(eventArray), "Arrays should have same number of elements");
483 PUSH_IP_SOCKET(u6, eventArray, socketArray, arraySize);
484 PUSH_IP_SOCKET(u6s, eventArray, socketArray, arraySize);
485 PUSH_IP_SOCKET(u4, eventArray, socketArray, arraySize);
486 PUSH_IP_SOCKET(u4s, eventArray, socketArray, arraySize);
487 PUSH_IP_SOCKET(m6, eventArray, socketArray, arraySize);
488 PUSH_IP_SOCKET(m6s, eventArray, socketArray, arraySize);
489 PUSH_IP_SOCKET(m4, eventArray, socketArray, arraySize);
490 PUSH_IP_SOCKET(m4s, eventArray, socketArray, arraySize);
492 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
494 INSERT_SOCKET(OC_INVALID_SOCKET, socketArray, arraySize);
495 PUSH_HANDLE(caglobals.ip.shutdownEvent, eventArray, arraySize);
498 /** @todo Support netlink events */
500 // Should not have overflowed buffer
501 assert(arraySize <= (_countof(socketArray)));
503 // Timeout is unnecessary on Windows
504 assert(-1 == caglobals.ip.selectTimeout);
506 while (!caglobals.ip.terminate)
508 int ret = WSAWaitForMultipleEvents(arraySize, eventArray, FALSE, WSA_INFINITE, FALSE);
512 case WSA_WAIT_FAILED:
513 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_FAILED 0x%08x", WSAGetLastError());
515 case WSA_WAIT_IO_COMPLETION:
516 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_IO_COMPLETION 0x%08x", WSAGetLastError());
518 case WSA_WAIT_TIMEOUT:
519 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_TIMEOUT 0x%08x", WSAGetLastError());
522 eventIndex = ret - WSA_WAIT_EVENT_0;
523 if ((eventIndex >= 0) && (eventIndex < arraySize))
525 if (false == WSAResetEvent(eventArray[eventIndex]))
527 OIC_LOG_V(ERROR, TAG, "WSAResetEvent failed 0x%08x", WSAGetLastError());
530 // Break out if shutdownEvent is triggered.
531 if ((caglobals.ip.shutdownEvent != WSA_INVALID_EVENT) &&
532 (caglobals.ip.shutdownEvent == eventArray[eventIndex]))
536 CAEventReturned(socketArray[eventIndex]);
540 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents failed 0x%08x", WSAGetLastError());
547 while (arraySize > 0)
550 if (!WSACloseEvent(eventArray[arraySize]))
552 OIC_LOG_V(ERROR, TAG, "WSACloseEvent (Index %i) failed 0x%08x", arraySize, WSAGetLastError());
556 if (caglobals.ip.terminate)
558 caglobals.ip.shutdownEvent = WSA_INVALID_EVENT;
563 static void CAEventReturned(CASocketFd_t socket)
565 CASocketFd_t fd = OC_INVALID_SOCKET;
566 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
568 while (!caglobals.ip.terminate)
570 IS_MATCHING_IP_SOCKET(u6, socket, CA_IPV6)
571 else IS_MATCHING_IP_SOCKET(u6s, socket, CA_IPV6 | CA_SECURE)
572 else IS_MATCHING_IP_SOCKET(u4, socket, CA_IPV4)
573 else IS_MATCHING_IP_SOCKET(u4s, socket, CA_IPV4 | CA_SECURE)
574 else IS_MATCHING_IP_SOCKET(m6, socket, CA_MULTICAST | CA_IPV6)
575 else IS_MATCHING_IP_SOCKET(m6s, socket, CA_MULTICAST | CA_IPV6 | CA_SECURE)
576 else IS_MATCHING_IP_SOCKET(m4, socket, CA_MULTICAST | CA_IPV4)
577 else IS_MATCHING_IP_SOCKET(m4s, socket, CA_MULTICAST | CA_IPV4 | CA_SECURE)
582 (void)CAReceiveMessage(socket, flags);
583 // We will never get more than one match per socket, so always break.
590 void CADeInitializeIPGlobals()
592 CloseMulticastSocket();
594 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
597 closesocket(caglobals.ip.netlinkFd);
599 close(caglobals.ip.netlinkFd);
601 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
605 static CAResult_t CAReceiveMessage(CASocketFd_t fd, CATransportFlags_t flags)
607 OIC_LOG(DEBUG, TAG, "IN - CAReceiveMessage");
608 char recvBuffer[COAP_MAX_PDU_SIZE] = {0};
614 struct sockaddr_storage srcAddr = { .ss_family = 0 };
615 unsigned char *pktinfo = NULL;
616 #if !defined(WSA_CMSG_DATA)
617 struct cmsghdr *cmp = NULL;
618 struct iovec iov = { .iov_base = recvBuffer, .iov_len = sizeof (recvBuffer) };
622 unsigned char data[CMSG_SPACE(sizeof (struct in6_pktinfo))];
627 namelen = sizeof (struct sockaddr_in6);
628 level = IPPROTO_IPV6;
630 len = sizeof (struct in6_pktinfo);
634 namelen = sizeof (struct sockaddr_in);
637 len = sizeof (struct in6_pktinfo);
640 struct msghdr msg = { .msg_name = &srcAddr,
641 .msg_namelen = namelen,
644 .msg_control = &cmsg,
645 .msg_controllen = CMSG_SPACE(len) };
647 ssize_t recvLen = recvmsg(fd, &msg, flags);
648 if (OC_SOCKET_ERROR == recvLen)
650 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
651 return CA_STATUS_FAILED;
653 OIC_LOG_V(DEBUG, TAG, "recvd %u bytes from recvmsg", recvLen);
655 if (flags & CA_MULTICAST)
657 for (cmp = CMSG_FIRSTHDR(&msg); cmp != NULL; cmp = CMSG_NXTHDR(&msg, cmp))
659 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
661 pktinfo = CMSG_DATA(cmp);
665 #else // if defined(WSA_CMSG_DATA)
669 uint8_t data[WSA_CMSG_SPACE(sizeof (IN6_PKTINFO))];
671 memset(&cmsg, 0, sizeof(cmsg));
675 namelen = sizeof (struct sockaddr_in6);
676 level = IPPROTO_IPV6;
681 namelen = sizeof (struct sockaddr_in);
686 WSABUF iov = {.len = sizeof (recvBuffer), .buf = recvBuffer};
687 WSAMSG msg = {.name = (PSOCKADDR)&srcAddr,
691 .Control = {.buf = cmsg.data, .len = sizeof (cmsg)}
694 uint32_t recvLen = 0;
695 uint32_t ret = caglobals.ip.wsaRecvMsg(fd, &msg, &recvLen, 0,0);
696 OIC_LOG_V(DEBUG, TAG, "WSARecvMsg recvd %u bytes", recvLen);
697 if (OC_SOCKET_ERROR == ret)
699 OIC_LOG_V(ERROR, TAG, "WSARecvMsg failed %i", WSAGetLastError());
702 if (flags & CA_MULTICAST)
704 for (WSACMSGHDR *cmp = WSA_CMSG_FIRSTHDR(&msg); cmp != NULL;
705 cmp = WSA_CMSG_NXTHDR(&msg, cmp))
707 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
709 pktinfo = WSA_CMSG_DATA(cmp);
713 #endif // !defined(WSA_CMSG_DATA)
714 CASecureEndpoint_t sep = {.endpoint = {.adapter = CA_ADAPTER_IP, .flags = flags}};
719 /** @todo figure out correct usage for ifindex, and sin6_scope_id.*/
720 if ((flags & CA_MULTICAST) && pktinfo)
722 struct in6_addr *addr = &(((struct in6_pktinfo *)pktinfo)->ipi6_addr);
723 unsigned char topbits = ((unsigned char *)addr)[0];
726 sep.endpoint.flags &= ~CA_MULTICAST;
733 if ((flags & CA_MULTICAST) && pktinfo)
735 struct in_addr *addr = &((struct in_pktinfo *)pktinfo)->ipi_addr;
736 uint32_t host = ntohl(addr->s_addr);
737 unsigned char topbits = ((unsigned char *)&host)[3];
738 if (topbits < 224 || topbits > 239)
740 sep.endpoint.flags &= ~CA_MULTICAST;
745 CAConvertAddrToName(&srcAddr, namelen, sep.endpoint.addr, &sep.endpoint.port);
747 if (flags & CA_SECURE)
750 int ret = CAdecryptSsl(&sep, (uint8_t *)recvBuffer, recvLen);
751 OIC_LOG_V(INFO, TAG, "CAdecryptSsl returns [%d]", ret);
753 OIC_LOG(ERROR, TAG, "Encrypted message but no DTLS");
758 if (g_packetReceivedCallback)
760 OIC_LOG(DEBUG, TAG, "call receivedCB");
761 g_packetReceivedCallback(&sep, recvBuffer, recvLen);
765 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveMessage");
772 OIC_LOG(DEBUG, TAG, "IN");
773 OIC_LOG(DEBUG, TAG, "OUT");
776 static CASocketFd_t CACreateSocket(int family, uint16_t *port, bool isMulticast)
778 int socktype = SOCK_DGRAM;
780 socktype |= SOCK_CLOEXEC;
782 CASocketFd_t fd = socket(family, socktype, IPPROTO_UDP);
783 if (OC_INVALID_SOCKET == fd)
785 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", CAIPS_GET_ERROR);
786 return OC_INVALID_SOCKET;
789 #if !defined(SOCK_CLOEXEC) && defined(FD_CLOEXEC)
790 int fl = fcntl(fd, F_GETFD);
791 if (-1 == fl || -1 == fcntl(fd, F_SETFD, fl|FD_CLOEXEC))
793 OIC_LOG_V(ERROR, TAG, "set FD_CLOEXEC failed: %s", strerror(errno));
795 return OC_INVALID_SOCKET;
798 struct sockaddr_storage sa = { .ss_family = family };
799 socklen_t socklen = 0;
801 if (family == AF_INET6)
805 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, OPTVAL_T(&on), sizeof (on)))
807 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", CAIPS_GET_ERROR);
810 if (isMulticast && *port) // only do this for multicast ports
812 #if defined(IPV6_RECVPKTINFO)
813 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof (on)))
815 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, OPTVAL_T(&on), sizeof (on)))
818 OIC_LOG_V(ERROR, TAG, "IPV6_RECVPKTINFO failed: %s",CAIPS_GET_ERROR);
822 ((struct sockaddr_in6 *)&sa)->sin6_port = htons(*port);
823 socklen = sizeof (struct sockaddr_in6);
827 if (isMulticast && *port) // only do this for multicast ports
830 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IP, IP_PKTINFO, OPTVAL_T(&on), sizeof (on)))
832 OIC_LOG_V(ERROR, TAG, "IP_PKTINFO failed: %s", CAIPS_GET_ERROR);
836 ((struct sockaddr_in *)&sa)->sin_port = htons(*port);
837 socklen = sizeof (struct sockaddr_in);
840 if (isMulticast && *port) // use the given port
843 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, OPTVAL_T(&on), sizeof (on)))
845 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", CAIPS_GET_ERROR);
851 return OC_INVALID_SOCKET;
855 if (OC_SOCKET_ERROR == bind(fd, (struct sockaddr *)&sa, socklen))
857 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", CAIPS_GET_ERROR);
863 return OC_INVALID_SOCKET;
866 if (!*port) // return the assigned port
868 if (OC_SOCKET_ERROR == getsockname(fd, (struct sockaddr *)&sa, &socklen))
870 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", CAIPS_GET_ERROR);
876 return OC_INVALID_SOCKET;
878 *port = ntohs(family == AF_INET6 ?
879 ((struct sockaddr_in6 *)&sa)->sin6_port :
880 ((struct sockaddr_in *)&sa)->sin_port);
886 #define CHECKFD(FD) \
887 if (FD > caglobals.ip.maxfd) \
888 caglobals.ip.maxfd = FD;
889 #define NEWSOCKET(FAMILY, NAME, MULTICAST) \
890 if (caglobals.ip.NAME.fd == OC_INVALID_SOCKET) \
892 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
893 if (caglobals.ip.NAME.fd == OC_INVALID_SOCKET) \
895 caglobals.ip.NAME.port = 0; \
896 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
898 CHECKFD(caglobals.ip.NAME.fd) \
901 void CreateMulticastSocket()
903 OIC_LOG_V(INFO, TAG, "In %s", __func__);
905 if (caglobals.ip.ipv6enabled)
907 NEWSOCKET(AF_INET6, u6, false)
908 NEWSOCKET(AF_INET6, u6s, false)
909 NEWSOCKET(AF_INET6, m6, true)
910 NEWSOCKET(AF_INET6, m6s, true)
911 OIC_LOG_V(INFO, TAG, "IPv6 unicast port: %u", caglobals.ip.u6.port);
913 if (caglobals.ip.ipv4enabled)
915 NEWSOCKET(AF_INET, u4, false)
916 NEWSOCKET(AF_INET, u4s, false)
917 NEWSOCKET(AF_INET, m4, true)
918 NEWSOCKET(AF_INET, m4s, true)
919 OIC_LOG_V(INFO, TAG, "IPv4 unicast port: %u", caglobals.ip.u4.port);
922 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
925 void CloseMulticastSocket()
927 OIC_LOG_V(INFO, TAG, "In %s", __func__);
938 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
941 static void CAInitializeNetlink()
943 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
945 // create NETLINK fd for interface change notifications
946 struct sockaddr_nl sa = { AF_NETLINK, 0, 0,
947 RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR };
949 caglobals.ip.netlinkFd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE);
950 if (caglobals.ip.netlinkFd == OC_INVALID_SOCKET)
952 OIC_LOG_V(ERROR, TAG, "netlink socket failed: %s", strerror(errno));
956 int r = bind(caglobals.ip.netlinkFd, (struct sockaddr *)&sa, sizeof (sa));
959 OIC_LOG_V(ERROR, TAG, "netlink bind failed: %s", strerror(errno));
960 close(caglobals.ip.netlinkFd);
961 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
965 CHECKFD(caglobals.ip.netlinkFd);
968 #elif defined (__TIZENRT__) // pkmsgq
969 struct mq_attr lq_attr;
970 lq_attr.mq_maxmsg = 10;
971 lq_attr.mq_msgsize = 4;
972 lq_attr.mq_flags = 0;
973 g_nwevent_mqfd = mq_open("netlink_evtq", O_RDWR | O_NONBLOCK | O_CREAT, 0666, &lq_attr);
974 if (g_nwevent_mqfd == (mqd_t) - 1)
976 OIC_LOG_V(ERROR, TAG,"RECV mq_open failed\n");
982 static void CAInitializeFastShutdownMechanism()
984 caglobals.ip.selectTimeout = -1; // don't poll for shutdown
986 #if defined(WSA_WAIT_EVENT_0)
987 caglobals.ip.shutdownEvent = WSACreateEvent();
988 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
992 #elif defined(HAVE_PIPE2)
994 ret = pipe2(caglobals.ip.shutdownFds, O_CLOEXEC);
995 CHECKFD(caglobals.ip.shutdownFds[0]);
996 CHECKFD(caglobals.ip.shutdownFds[1]);
1000 ret = pipe(caglobals.ip.shutdownFds);
1003 ret = fcntl(caglobals.ip.shutdownFds[0], F_GETFD);
1006 ret = fcntl(caglobals.ip.shutdownFds[0], F_SETFD, ret|FD_CLOEXEC);
1010 ret = fcntl(caglobals.ip.shutdownFds[1], F_GETFD);
1014 ret = fcntl(caglobals.ip.shutdownFds[1], F_SETFD, ret|FD_CLOEXEC);
1018 close(caglobals.ip.shutdownFds[1]);
1019 close(caglobals.ip.shutdownFds[0]);
1020 caglobals.ip.shutdownFds[0] = -1;
1021 caglobals.ip.shutdownFds[1] = -1;
1024 CHECKFD(caglobals.ip.shutdownFds[0]);
1025 CHECKFD(caglobals.ip.shutdownFds[1]);
1030 OIC_LOG_V(ERROR, TAG, "fast shutdown mechanism init failed: %s", CAIPS_GET_ERROR);
1031 caglobals.ip.selectTimeout = SELECT_TIMEOUT; //poll needed for shutdown
1035 CAResult_t CAIPStartServer(const ca_thread_pool_t threadPool)
1037 CAResult_t res = CA_STATUS_OK;
1039 if (caglobals.ip.started)
1043 #if defined (_WIN32)
1044 WORD wVersionRequested = MAKEWORD(2, 2);
1045 WSADATA wsaData ={.wVersion = 0};
1046 int err = WSAStartup(wVersionRequested, &wsaData);
1049 OIC_LOG_V(ERROR, TAG, "WSAStartup failed: %i", err);
1050 return CA_STATUS_FAILED;
1052 OIC_LOG(DEBUG, TAG, "WSAStartup Succeeded");
1054 if (!IPv4MulticastAddress.s_addr)
1056 (void)inet_pton(AF_INET, IPv4_MULTICAST, &IPv4MulticastAddress);
1057 (void)inet_pton(AF_INET6, IPv6_MULTICAST_INT, &IPv6MulticastAddressInt);
1058 (void)inet_pton(AF_INET6, IPv6_MULTICAST_LNK, &IPv6MulticastAddressLnk);
1059 (void)inet_pton(AF_INET6, IPv6_MULTICAST_RLM, &IPv6MulticastAddressRlm);
1060 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ADM, &IPv6MulticastAddressAdm);
1061 (void)inet_pton(AF_INET6, IPv6_MULTICAST_SIT, &IPv6MulticastAddressSit);
1062 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ORG, &IPv6MulticastAddressOrg);
1063 (void)inet_pton(AF_INET6, IPv6_MULTICAST_GLB, &IPv6MulticastAddressGlb);
1066 if (!caglobals.ip.ipv6enabled && !caglobals.ip.ipv4enabled)
1068 caglobals.ip.ipv4enabled = true; // only needed to run CA tests
1071 CreateMulticastSocket();
1073 OIC_LOG_V(INFO, TAG,
1074 "socket summary: u6=%d, u6s=%d, u4=%d, u4s=%d, m6=%d, m6s=%d, m4=%d, m4s=%d",
1075 caglobals.ip.u6.fd, caglobals.ip.u6s.fd, caglobals.ip.u4.fd, caglobals.ip.u4s.fd,
1076 caglobals.ip.m6.fd, caglobals.ip.m6s.fd, caglobals.ip.m4.fd, caglobals.ip.m4s.fd);
1078 OIC_LOG_V(INFO, TAG,
1079 "port summary: u6 port=%d, u6s port=%d, u4 port=%d, u4s port=%d, m6 port=%d,"
1080 "m6s port=%d, m4 port=%d, m4s port=%d",
1081 caglobals.ip.u6.port, caglobals.ip.u6s.port, caglobals.ip.u4.port,
1082 caglobals.ip.u4s.port, caglobals.ip.m6.port, caglobals.ip.m6s.port,
1083 caglobals.ip.m4.port, caglobals.ip.m4s.port);
1084 #if defined (SIO_GET_EXTENSION_FUNCTION_POINTER)
1085 caglobals.ip.wsaRecvMsg = NULL;
1086 GUID GuidWSARecvMsg = WSAID_WSARECVMSG;
1088 err = WSAIoctl(caglobals.ip.u4.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &GuidWSARecvMsg, sizeof(GuidWSARecvMsg), &(caglobals.ip.wsaRecvMsg), sizeof(caglobals.ip.wsaRecvMsg), &copied, 0, 0);
1091 OIC_LOG_V(ERROR, TAG, "WSAIoctl failed %i", WSAGetLastError());
1092 return CA_STATUS_FAILED;
1095 // set up appropriate FD mechanism for fast shutdown
1096 CAInitializeFastShutdownMechanism();
1098 // create source of network interface change notifications
1099 CAInitializeNetlink();
1101 caglobals.ip.selectTimeout = CAGetPollingInterval(caglobals.ip.selectTimeout);
1103 res = CAIPStartListenServer();
1104 if (CA_STATUS_OK != res)
1106 OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", res);
1110 caglobals.ip.terminate = false;
1112 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL, NULL);
1114 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL, NULL, "IoT_ReceiveHandler",
1115 CONFIG_IOTIVITY_RECEIVEHANDLER_PTHREAD_STACKSIZE);
1117 if (CA_STATUS_OK != res)
1119 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
1123 OIC_LOG(INFO, TAG, "CAReceiveHandler thread started successfully.");
1125 caglobals.ip.started = true;
1126 return CA_STATUS_OK;
1129 void CAIPStopServer()
1131 caglobals.ip.started = false;
1132 caglobals.ip.terminate = true;
1134 CADeInitializeIPGlobals();
1136 #if !defined(WSA_WAIT_EVENT_0)
1138 if (caglobals.ip.shutdownFds[1] != -1)
1140 close(caglobals.ip.shutdownFds[1]);
1141 // receive thread will stop immediately
1145 // receive thread will stop in SELECT_TIMEOUT seconds.
1149 // receive thread will stop immediately.
1150 if (!WSASetEvent(caglobals.ip.shutdownEvent))
1152 OIC_LOG_V(DEBUG, TAG, "set shutdown event failed: %#08X", GetLastError());
1156 OIC_LOG(INFO, TAG, "Adapter terminated successfully");
1159 static void applyMulticastToInterface4(uint32_t ifindex)
1161 if (!caglobals.ip.ipv4enabled)
1166 #if defined(USE_IP_MREQN)
1167 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1168 .imr_address.s_addr = htonl(INADDR_ANY),
1169 .imr_ifindex = ifindex };
1171 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1172 .imr_interface.s_addr = htonl(ifindex) };
1175 int ret = setsockopt(caglobals.ip.m4.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1176 if (OC_SOCKET_ERROR == ret)
1178 #if !defined(WSAEINVAL)
1179 if (EADDRINUSE != errno)
1181 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv4 Flavor)
1184 OIC_LOG_V(ERROR, TAG, " IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1187 ret = setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1188 if (OC_SOCKET_ERROR == ret)
1190 #if !defined(WSAEINVAL)
1191 if (EADDRINUSE != errno)
1193 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv4 Flavor)
1196 OIC_LOG_V(ERROR, TAG, "SECURE IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1201 static void applyMulticast6(int fd, struct in6_addr *addr, uint32_t ifindex)
1204 struct ipv6_mreq mreq = {.ipv6mr_multiaddr = {{{0}}},
1205 .ipv6mr_interface = ifindex };
1207 // VS2013 has problems with struct copies inside struct initializers, so copy separately.
1208 mreq.ipv6mr_multiaddr = *addr;
1210 int ret = setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, OPTVAL_T(&mreq), sizeof (mreq));
1211 if (OC_SOCKET_ERROR == ret)
1213 #if !defined(_WIN32)
1214 if (EADDRINUSE != errno)
1216 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv6 Flavor)
1219 OIC_LOG_V(ERROR, TAG, "IPv6 IPV6_JOIN_GROUP failed: %s", CAIPS_GET_ERROR);
1225 static void applyMulticastToInterface6(uint32_t ifindex)
1227 if (!caglobals.ip.ipv6enabled)
1231 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressInt, ifindex);
1232 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressLnk, ifindex);
1233 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressRlm, ifindex);
1234 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressAdm, ifindex);
1235 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressSit, ifindex);
1236 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressOrg, ifindex);
1237 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressGlb, ifindex);
1239 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressInt, ifindex);
1240 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressLnk, ifindex);
1241 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressRlm, ifindex);
1242 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressAdm, ifindex);
1243 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressSit, ifindex);
1244 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressOrg, ifindex);
1245 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressGlb, ifindex);
1248 CAResult_t CAIPStartListenServer()
1250 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1253 OIC_LOG_V(ERROR, TAG, "CAIPGetInterfaceInformation() failed: %s", strerror(errno));
1254 return CA_STATUS_FAILED;
1257 uint32_t len = u_arraylist_length(iflist);
1258 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1260 for (uint32_t i = 0; i < len; i++)
1262 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1268 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1272 if (ifitem->family == AF_INET)
1274 OIC_LOG_V(DEBUG, TAG, "Adding IPv4 interface(%d) to multicast group", ifitem->index);
1275 applyMulticastToInterface4(ifitem->index);
1277 if (ifitem->family == AF_INET6)
1279 OIC_LOG_V(DEBUG, TAG, "Adding IPv6 interface(%d) to multicast group", ifitem->index);
1280 applyMulticastToInterface6(ifitem->index);
1284 u_arraylist_destroy(iflist);
1285 return CA_STATUS_OK;
1288 CAResult_t CAIPStopListenServer()
1290 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1293 OIC_LOG_V(ERROR, TAG, "Get interface info failed: %s", strerror(errno));
1294 return CA_STATUS_FAILED;
1297 uint32_t len = u_arraylist_length(iflist);
1298 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1300 for (uint32_t i = 0; i < len; i++)
1302 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1308 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1312 if (ifitem->family == AF_INET)
1316 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s cloed", ifitem->name);
1318 if (ifitem->family == AF_INET6)
1322 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
1325 u_arraylist_destroy(iflist);
1326 return CA_STATUS_OK;
1329 void CAProcessNewInterface(CAInterface_t *ifitem)
1333 OIC_LOG(DEBUG, TAG, "ifitem is null");
1337 if (ifitem->family == AF_INET6)
1339 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv6 interface(%d) to multicast group", ifitem->index);
1340 applyMulticastToInterface6(ifitem->index);
1342 if (ifitem->family == AF_INET)
1344 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv4 interface(%d) to multicast group", ifitem->index);
1345 applyMulticastToInterface4(ifitem->index);
1349 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
1351 g_packetReceivedCallback = callback;
1354 static void sendData(int fd, const CAEndpoint_t *endpoint,
1355 const void *data, uint32_t dlen,
1356 const char *cast, const char *fam)
1358 OIC_LOG(DEBUG, TAG, "IN");
1362 OIC_LOG(DEBUG, TAG, "endpoint is null");
1363 if (g_ipErrorHandler)
1365 g_ipErrorHandler(endpoint, data, dlen, CA_STATUS_INVALID_PARAM);
1370 (void)cast; // eliminates release warning
1373 struct sockaddr_storage sock = { .ss_family = 0 };
1374 CAConvertNameToAddr(endpoint->addr, endpoint->port, &sock);
1376 socklen_t socklen = 0;
1377 if (sock.ss_family == AF_INET6)
1379 /** @todo figure out correct usage for ifindex, and sin6_scope_id */
1380 socklen = sizeof(struct sockaddr_in6);
1384 socklen = sizeof(struct sockaddr_in);
1388 const char *secure = (endpoint->flags & CA_SECURE) ? "secure " : "";
1390 #if !defined(_WIN32)
1391 ssize_t len = sendto(fd, data, dlen, 0, (struct sockaddr *)&sock, socklen);
1392 if (OC_SOCKET_ERROR == len)
1394 // If logging is not defined/enabled.
1395 if (g_ipErrorHandler)
1397 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1399 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %s", secure, cast, fam, strerror(errno));
1400 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1401 len, false, strerror(errno));
1405 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %zd bytes", secure, cast, fam, len);
1406 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1414 len = sendto(fd, ((char*)data) + sent, dlen - sent, 0, (struct sockaddr *)&sock, socklen);
1415 if (OC_SOCKET_ERROR == len)
1417 err = WSAGetLastError();
1418 if ((WSAEWOULDBLOCK != err) && (WSAENOBUFS != err))
1420 // If logging is not defined/enabled.
1421 if (g_ipErrorHandler)
1423 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1426 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %i", secure, cast, fam, err);
1434 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo (Partial Send) is successful: "
1435 "currently sent: %ld bytes, "
1436 "total sent: %ld bytes, "
1437 "remaining: %ld bytes",
1438 secure, cast, fam, len, sent, dlen-sent);
1442 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %ld bytes",
1443 secure, cast, fam, len);
1446 } while ((OC_SOCKET_ERROR == len) && ((WSAEWOULDBLOCK == err) || (WSAENOBUFS == err)) || (sent < dlen));
1450 static void sendMulticastData6(const u_arraylist_t *iflist,
1451 CAEndpoint_t *endpoint,
1452 const void *data, uint32_t datalen)
1456 OIC_LOG(DEBUG, TAG, "endpoint is null");
1460 int scope = endpoint->flags & CA_SCOPE_MASK;
1461 char *ipv6mcname = ipv6mcnames[scope];
1464 OIC_LOG_V(INFO, TAG, "IPv6 multicast scope invalid: %d", scope);
1467 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), ipv6mcname);
1468 int fd = caglobals.ip.u6.fd;
1470 uint32_t len = u_arraylist_length(iflist);
1471 for (uint32_t i = 0; i < len; i++)
1473 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1478 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1482 if (ifitem->family != AF_INET6)
1487 bool isMobile = false;
1488 for (uint32_t j = 0; j < MOBILE_INTERFACES; j++)
1490 if (strstr(ifitem->name, mobileinferfaces[j]))
1501 int index = ifitem->index;
1502 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, OPTVAL_T(&index), sizeof (index)))
1504 OIC_LOG_V(ERROR, TAG, "setsockopt6 failed: %s", CAIPS_GET_ERROR);
1509 // Set multicast packet TTL; default TTL is 1
1510 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &multicastTTL, sizeof(multicastTTL)))
1512 OIC_LOG_V(ERROR, TAG, "IPV6_MULTICAST_HOPS failed: %s", CAIPS_GET_ERROR);
1515 sendData(fd, endpoint, data, datalen, "multicast", "ipv6");
1519 static void sendMulticastData4(const u_arraylist_t *iflist,
1520 CAEndpoint_t *endpoint,
1521 const void *data, uint32_t datalen)
1523 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1525 #if defined(USE_IP_MREQN)
1526 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1527 .imr_address.s_addr = htonl(INADDR_ANY),
1530 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1531 .imr_interface = {0}};
1534 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), IPv4_MULTICAST);
1535 int fd = caglobals.ip.u4.fd;
1537 uint32_t len = u_arraylist_length(iflist);
1538 for (uint32_t i = 0; i < len; i++)
1540 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1545 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1549 if (ifitem->family != AF_INET)
1554 bool isMobile = false;
1555 for (uint32_t j = 0; j < MOBILE_INTERFACES; j++)
1557 if (strstr(ifitem->name, mobileinferfaces[j]))
1568 #if defined(USE_IP_MREQN)
1569 mreq.imr_ifindex = ifitem->index;
1571 mreq.imr_interface.s_addr = htonl(ifitem->index);
1573 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, OPTVAL_T(&mreq), sizeof (mreq)))
1575 OIC_LOG_V(ERROR, TAG, "send IP_MULTICAST_IF failed: %s (using defualt)",
1579 // Set multicast packet TTL; default TTL is 1
1580 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL, &multicastTTL, sizeof(multicastTTL)))
1582 OIC_LOG_V(ERROR, TAG, "IP_MULTICAST_TTL failed: %s", CAIPS_GET_ERROR);
1584 sendData(fd, endpoint, data, datalen, "multicast", "ipv4");
1588 void CAIPSendData(CAEndpoint_t *endpoint, const void *data, uint32_t datalen,
1591 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1592 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
1594 bool isSecure = (endpoint->flags & CA_SECURE) != 0;
1598 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1600 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1603 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1607 if ((endpoint->flags & CA_IPV6) && caglobals.ip.ipv6enabled)
1609 sendMulticastData6(iflist, endpoint, data, datalen);
1611 if ((endpoint->flags & CA_IPV4) && caglobals.ip.ipv4enabled)
1613 sendMulticastData4(iflist, endpoint, data, datalen);
1616 u_arraylist_destroy(iflist);
1620 if (!endpoint->port) // unicast discovery
1622 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1626 if (caglobals.ip.ipv6enabled && (endpoint->flags & CA_IPV6))
1628 fd = isSecure ? caglobals.ip.u6s.fd : caglobals.ip.u6.fd;
1629 #ifndef __WITH_DTLS__
1630 fd = caglobals.ip.u6.fd;
1632 sendData(fd, endpoint, data, datalen, "unicast", "ipv6");
1634 if (caglobals.ip.ipv4enabled && (endpoint->flags & CA_IPV4))
1636 fd = isSecure ? caglobals.ip.u4s.fd : caglobals.ip.u4.fd;
1637 #ifndef __WITH_DTLS__
1638 fd = caglobals.ip.u4.fd;
1640 sendData(fd, endpoint, data, datalen, "unicast", "ipv4");
1645 CAResult_t CAGetIPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
1647 VERIFY_NON_NULL(info, TAG, "info is NULL");
1648 VERIFY_NON_NULL(size, TAG, "size is NULL");
1650 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1653 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1654 return CA_STATUS_FAILED;
1657 uint32_t len = u_arraylist_length(iflist);
1658 uint32_t length = len;
1660 #ifdef __WITH_DTLS__
1661 //If DTLS is supported, each interface can support secure port as well
1665 CAEndpoint_t *eps = (CAEndpoint_t *)OICCalloc(length, sizeof (CAEndpoint_t));
1668 OIC_LOG(ERROR, TAG, "Malloc Failed");
1669 u_arraylist_destroy(iflist);
1670 return CA_MEMORY_ALLOC_FAILED;
1673 for (uint32_t i = 0, j = 0; i < len; i++)
1675 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1681 eps[j].adapter = CA_ADAPTER_IP;
1684 if (ifitem->family == AF_INET6)
1686 eps[j].flags = CA_IPV6;
1687 eps[j].port = caglobals.ip.u6.port;
1691 eps[j].flags = CA_IPV4;
1692 eps[j].port = caglobals.ip.u4.port;
1694 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1696 #ifdef __WITH_DTLS__
1699 eps[j].adapter = CA_ADAPTER_IP;
1702 if (ifitem->family == AF_INET6)
1704 eps[j].flags = CA_IPV6 | CA_SECURE;
1705 eps[j].port = caglobals.ip.u6s.port;
1709 eps[j].flags = CA_IPV4 | CA_SECURE;
1710 eps[j].port = caglobals.ip.u4s.port;
1712 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1720 u_arraylist_destroy(iflist);
1722 return CA_STATUS_OK;
1725 void CAIPSetErrorHandler(CAIPErrorHandleCallback errorHandleCallback)
1727 g_ipErrorHandler = errorHandleCallback;
1730 CAResult_t CAIPSetMulticastTTL(size_t ttl)
1733 return CA_STATUS_OK;
1736 CAResult_t CAIPGetMulticastTTL(size_t *ttl)
1738 VERIFY_NON_NULL(ttl, TAG, "ttl is NULL");
1740 *ttl = multicastTTL;
1741 return CA_STATUS_OK;