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;
128 * Buffer size for the receive message buffer
130 #define RECV_MSG_BUF_LEN 16384
132 static char *ipv6mcnames[IPv6_DOMAINS] = {
152 static char *mobileinferfaces[MOBILE_INTERFACES] = {
158 struct in6_addr ipi6_addr;
164 unsigned int ipi_ifindex; /* Interface index */
165 struct in_addr ipi_spec_dst; /* Local address */
166 struct in_addr ipi_addr; /* Header Destination
171 #define RTMGRP_LINK 1
173 #define IPV6_PKTINFO 50
174 #define IPV6_MULTICAST_IF 9
175 #define IPV6_V6ONLY 27
176 #define IPV6_RECVPKTINFO 50
177 #define IPV6_JOIN_GROUP 12
181 * By default, IP multicast datagrams are sent with a time-to-live (TTL) of 1.
182 * An application can choose an initial TTL.
184 static size_t multicastTTL = 1;
187 #define IFF_UP_RUNNING_FLAGS (IFF_UP)
189 char* caips_get_error(){
190 static char buffer[32];
191 snprintf(buffer, 32, "%i", WSAGetLastError());
194 #define CAIPS_GET_ERROR \
197 #define IFF_UP_RUNNING_FLAGS (IFF_UP|IFF_RUNNING)
199 #define CAIPS_GET_ERROR \
202 static CAIPErrorHandleCallback g_ipErrorHandler = NULL;
204 static CAIPPacketReceivedCallback g_packetReceivedCallback = NULL;
206 static void CAFindReadyMessage();
207 #if !defined(WSA_WAIT_EVENT_0)
208 static void CASelectReturned(fd_set *readFds, int ret);
210 static void CAEventReturned(CASocketFd_t socket);
213 static CAResult_t CAReceiveMessage(CASocketFd_t fd, CATransportFlags_t flags);
216 static int cleanup_pop_arg = 1;
218 static void CAIPCleanupHandler(void *arg)
220 OIC_LOG(DEBUG, TAG, "Called clean-up handler");
222 if (caglobals.ip.shutdownFds[0] != OC_INVALID_SOCKET)
224 close(caglobals.ip.shutdownFds[0]);
225 caglobals.ip.shutdownFds[0] = OC_INVALID_SOCKET;
229 static void CAReceiveHandler(void *data)
232 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
234 pthread_cleanup_push(CAIPCleanupHandler, NULL);
236 while (!caglobals.ip.terminate)
238 CAFindReadyMessage();
241 pthread_cleanup_pop(cleanup_pop_arg);
243 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
246 static void CAReceiveHandler(void *data)
249 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
251 while (!caglobals.ip.terminate)
253 CAFindReadyMessage();
256 if (caglobals.ip.shutdownFds[0] != OC_INVALID_SOCKET)
258 close(caglobals.ip.shutdownFds[0]);
259 caglobals.ip.shutdownFds[0] = OC_INVALID_SOCKET;
262 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
266 #if !defined(WSA_WAIT_EVENT_0)
268 #define CLOSE_SOCKET(TYPE) \
269 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
271 close(caglobals.ip.TYPE.fd); \
272 caglobals.ip.TYPE.fd = OC_INVALID_SOCKET; \
275 #define SET(TYPE, FDS) \
276 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
278 FD_SET(caglobals.ip.TYPE.fd, FDS); \
281 #define ISSET(TYPE, FDS, FLAGS) \
282 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET && FD_ISSET(caglobals.ip.TYPE.fd, FDS)) \
284 fd = caglobals.ip.TYPE.fd; \
289 static void CAFindReadyMessage()
292 struct timeval timeout;
294 timeout.tv_sec = caglobals.ip.selectTimeout;
296 struct timeval *tv = caglobals.ip.selectTimeout == -1 ? NULL : &timeout;
308 if (caglobals.ip.shutdownFds[0] != -1)
310 FD_SET(caglobals.ip.shutdownFds[0], &readFds);
313 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
315 FD_SET(caglobals.ip.netlinkFd, &readFds);
318 int ret = select(caglobals.ip.maxfd + 1, &readFds, NULL, NULL, tv);
320 if (caglobals.ip.terminate)
322 OIC_LOG_V(INFO, TAG, "Packet receiver Stop request received.");
326 u_arraylist_t *iflist = CAFindInterfaceChange();
329 uint32_t listLength = u_arraylist_length(iflist);
330 for (uint32_t i = 0; i < listLength; i++)
332 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
335 CAProcessNewInterface(ifitem);
338 u_arraylist_destroy(iflist);
343 CASelectReturned(&readFds, ret);
347 OIC_LOG_V(FATAL, TAG, "select error %s", CAIPS_GET_ERROR);
351 static void CASelectReturned(fd_set *readFds, int ret)
354 CASocketFd_t fd = OC_INVALID_SOCKET;
355 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
357 while (!caglobals.ip.terminate)
359 ISSET(u6, readFds, CA_IPV6)
360 else ISSET(u6s, readFds, CA_IPV6 | CA_SECURE)
361 else ISSET(u4, readFds, CA_IPV4)
362 else ISSET(u4s, readFds, CA_IPV4 | CA_SECURE)
363 else ISSET(m6, readFds, CA_MULTICAST | CA_IPV6)
364 else ISSET(m6s, readFds, CA_MULTICAST | CA_IPV6 | CA_SECURE)
365 else ISSET(m4, readFds, CA_MULTICAST | CA_IPV4)
366 else ISSET(m4s, readFds, CA_MULTICAST | CA_IPV4 | CA_SECURE)
367 else if ((caglobals.ip.netlinkFd != OC_INVALID_SOCKET) && FD_ISSET(caglobals.ip.netlinkFd, readFds))
370 u_arraylist_t *iflist = CAFindInterfaceChange();
373 uint32_t listLength = u_arraylist_length(iflist);
374 for (uint32_t i = 0; i < listLength; i++)
376 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
379 CAProcessNewInterface(ifitem);
382 u_arraylist_destroy(iflist);
388 else if (FD_ISSET(caglobals.ip.shutdownFds[0], readFds))
391 ssize_t len = read(caglobals.ip.shutdownFds[0], buf, sizeof (buf));
403 (void)CAReceiveMessage(fd, flags);
408 #else // if defined(WSA_WAIT_EVENT_0)
410 #define CLOSE_SOCKET(TYPE) \
411 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
413 closesocket(caglobals.ip.TYPE.fd); \
414 caglobals.ip.TYPE.fd = OC_INVALID_SOCKET; \
417 #define PUSH_HANDLE(HANDLE, ARRAY, INDEX) \
419 ARRAY[INDEX] = HANDLE; \
423 // Turn handle into WSAEvent and push to ARRAY
424 #define PUSH_SOCKET(SOCKET, ARRAY, INDEX) \
425 if (SOCKET != OC_INVALID_SOCKET) \
428 NewEvent = WSACreateEvent(); \
429 if (WSA_INVALID_EVENT != NewEvent) \
431 if (0 != WSAEventSelect(SOCKET, NewEvent, FD_READ)) \
433 OIC_LOG_V(ERROR, TAG, "WSAEventSelect failed 0x%08x ", WSAGetLastError()); \
434 if (!WSACloseEvent(NewEvent)) \
436 OIC_LOG_V(ERROR, TAG, "WSACloseEvent(NewEvent) failed 0x%08x", WSAGetLastError()); \
441 PUSH_HANDLE(NewEvent, ARRAY, INDEX); \
446 OIC_LOG_V(ERROR, TAG, "WSACreateEvent(NewEvent) failed 0x%08x", WSAGetLastError()); \
450 #define INSERT_SOCKET(FD, ARRAY, INDEX) \
452 if (OC_INVALID_SOCKET != FD) \
459 // Inserts the socket into the SOCKET_ARRAY and pushes the socket event into EVENT_ARRAY
460 #define PUSH_IP_SOCKET(TYPE, EVENT_ARRAY, SOCKET_ARRAY, INDEX) \
462 if (OC_INVALID_SOCKET != caglobals.ip.TYPE.fd) \
464 INSERT_SOCKET(caglobals.ip.TYPE.fd, SOCKET_ARRAY, INDEX); \
465 PUSH_SOCKET(caglobals.ip.TYPE.fd, EVENT_ARRAY, INDEX); \
469 #define IS_MATCHING_IP_SOCKET(TYPE, SOCKET, FLAGS) \
470 if ((caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) && (caglobals.ip.TYPE.fd == SOCKET)) \
472 fd = caglobals.ip.TYPE.fd; \
476 #define EVENT_ARRAY_SIZE 10
478 static void CAFindReadyMessage()
480 CASocketFd_t socketArray[EVENT_ARRAY_SIZE];
481 HANDLE eventArray[EVENT_ARRAY_SIZE];
485 // socketArray and eventArray should have same number of elements
486 OC_STATIC_ASSERT(_countof(socketArray) == _countof(eventArray), "Arrays should have same number of elements");
488 PUSH_IP_SOCKET(u6, eventArray, socketArray, arraySize);
489 PUSH_IP_SOCKET(u6s, eventArray, socketArray, arraySize);
490 PUSH_IP_SOCKET(u4, eventArray, socketArray, arraySize);
491 PUSH_IP_SOCKET(u4s, eventArray, socketArray, arraySize);
492 PUSH_IP_SOCKET(m6, eventArray, socketArray, arraySize);
493 PUSH_IP_SOCKET(m6s, eventArray, socketArray, arraySize);
494 PUSH_IP_SOCKET(m4, eventArray, socketArray, arraySize);
495 PUSH_IP_SOCKET(m4s, eventArray, socketArray, arraySize);
497 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
499 INSERT_SOCKET(OC_INVALID_SOCKET, socketArray, arraySize);
500 PUSH_HANDLE(caglobals.ip.shutdownEvent, eventArray, arraySize);
503 /** @todo Support netlink events */
505 // Should not have overflowed buffer
506 assert(arraySize <= (_countof(socketArray)));
508 // Timeout is unnecessary on Windows
509 assert(-1 == caglobals.ip.selectTimeout);
511 while (!caglobals.ip.terminate)
513 int ret = WSAWaitForMultipleEvents(arraySize, eventArray, FALSE, WSA_INFINITE, FALSE);
517 case WSA_WAIT_FAILED:
518 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_FAILED 0x%08x", WSAGetLastError());
520 case WSA_WAIT_IO_COMPLETION:
521 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_IO_COMPLETION 0x%08x", WSAGetLastError());
523 case WSA_WAIT_TIMEOUT:
524 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_TIMEOUT 0x%08x", WSAGetLastError());
527 eventIndex = ret - WSA_WAIT_EVENT_0;
528 if ((eventIndex >= 0) && (eventIndex < arraySize))
530 if (false == WSAResetEvent(eventArray[eventIndex]))
532 OIC_LOG_V(ERROR, TAG, "WSAResetEvent failed 0x%08x", WSAGetLastError());
535 // Break out if shutdownEvent is triggered.
536 if ((caglobals.ip.shutdownEvent != WSA_INVALID_EVENT) &&
537 (caglobals.ip.shutdownEvent == eventArray[eventIndex]))
541 CAEventReturned(socketArray[eventIndex]);
545 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents failed 0x%08x", WSAGetLastError());
552 while (arraySize > 0)
555 if (!WSACloseEvent(eventArray[arraySize]))
557 OIC_LOG_V(ERROR, TAG, "WSACloseEvent (Index %i) failed 0x%08x", arraySize, WSAGetLastError());
561 if (caglobals.ip.terminate)
563 caglobals.ip.shutdownEvent = WSA_INVALID_EVENT;
568 static void CAEventReturned(CASocketFd_t socket)
570 CASocketFd_t fd = OC_INVALID_SOCKET;
571 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
573 while (!caglobals.ip.terminate)
575 IS_MATCHING_IP_SOCKET(u6, socket, CA_IPV6)
576 else IS_MATCHING_IP_SOCKET(u6s, socket, CA_IPV6 | CA_SECURE)
577 else IS_MATCHING_IP_SOCKET(u4, socket, CA_IPV4)
578 else IS_MATCHING_IP_SOCKET(u4s, socket, CA_IPV4 | CA_SECURE)
579 else IS_MATCHING_IP_SOCKET(m6, socket, CA_MULTICAST | CA_IPV6)
580 else IS_MATCHING_IP_SOCKET(m6s, socket, CA_MULTICAST | CA_IPV6 | CA_SECURE)
581 else IS_MATCHING_IP_SOCKET(m4, socket, CA_MULTICAST | CA_IPV4)
582 else IS_MATCHING_IP_SOCKET(m4s, socket, CA_MULTICAST | CA_IPV4 | CA_SECURE)
587 (void)CAReceiveMessage(socket, flags);
588 // We will never get more than one match per socket, so always break.
595 void CADeInitializeIPGlobals()
597 CloseMulticastSocket();
599 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
602 closesocket(caglobals.ip.netlinkFd);
604 close(caglobals.ip.netlinkFd);
606 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
610 static CAResult_t CAReceiveMessage(CASocketFd_t fd, CATransportFlags_t flags)
612 OIC_LOG(DEBUG, TAG, "IN - CAReceiveMessage");
613 char recvBuffer[RECV_MSG_BUF_LEN] = {0};
619 struct sockaddr_storage srcAddr = { .ss_family = 0 };
620 unsigned char *pktinfo = NULL;
621 #if !defined(WSA_CMSG_DATA)
622 struct cmsghdr *cmp = NULL;
623 struct iovec iov = { .iov_base = recvBuffer, .iov_len = sizeof (recvBuffer) };
627 unsigned char data[CMSG_SPACE(sizeof (struct in6_pktinfo))];
632 namelen = sizeof (struct sockaddr_in6);
633 level = IPPROTO_IPV6;
635 len = sizeof (struct in6_pktinfo);
639 namelen = sizeof (struct sockaddr_in);
642 len = sizeof (struct in6_pktinfo);
645 struct msghdr msg = { .msg_name = &srcAddr,
646 .msg_namelen = namelen,
649 .msg_control = &cmsg,
650 .msg_controllen = CMSG_SPACE(len) };
652 ssize_t recvLen = recvmsg(fd, &msg, flags);
653 if (OC_SOCKET_ERROR == recvLen)
655 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
656 return CA_STATUS_FAILED;
658 OIC_LOG_V(DEBUG, TAG, "recvd %u bytes from recvmsg", recvLen);
660 if (flags & CA_MULTICAST)
662 for (cmp = CMSG_FIRSTHDR(&msg); cmp != NULL; cmp = CMSG_NXTHDR(&msg, cmp))
664 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
666 pktinfo = CMSG_DATA(cmp);
670 #else // if defined(WSA_CMSG_DATA)
674 uint8_t data[WSA_CMSG_SPACE(sizeof (IN6_PKTINFO))];
676 memset(&cmsg, 0, sizeof(cmsg));
680 namelen = sizeof (struct sockaddr_in6);
681 level = IPPROTO_IPV6;
686 namelen = sizeof (struct sockaddr_in);
691 WSABUF iov = {.len = sizeof (recvBuffer), .buf = recvBuffer};
692 WSAMSG msg = {.name = (PSOCKADDR)&srcAddr,
696 .Control = {.buf = cmsg.data, .len = sizeof (cmsg)}
699 uint32_t recvLen = 0;
700 uint32_t ret = caglobals.ip.wsaRecvMsg(fd, &msg, &recvLen, 0,0);
701 OIC_LOG_V(DEBUG, TAG, "WSARecvMsg recvd %u bytes", recvLen);
702 if (OC_SOCKET_ERROR == ret)
704 OIC_LOG_V(ERROR, TAG, "WSARecvMsg failed %i", WSAGetLastError());
707 if (flags & CA_MULTICAST)
709 for (WSACMSGHDR *cmp = WSA_CMSG_FIRSTHDR(&msg); cmp != NULL;
710 cmp = WSA_CMSG_NXTHDR(&msg, cmp))
712 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
714 pktinfo = WSA_CMSG_DATA(cmp);
718 #endif // !defined(WSA_CMSG_DATA)
719 CASecureEndpoint_t sep = {.endpoint = {.adapter = CA_ADAPTER_IP, .flags = flags}};
724 /** @todo figure out correct usage for ifindex, and sin6_scope_id.*/
725 if ((flags & CA_MULTICAST) && pktinfo)
727 struct in6_addr *addr = &(((struct in6_pktinfo *)pktinfo)->ipi6_addr);
728 unsigned char topbits = ((unsigned char *)addr)[0];
731 sep.endpoint.flags &= ~CA_MULTICAST;
738 if ((flags & CA_MULTICAST) && pktinfo)
740 struct in_addr *addr = &((struct in_pktinfo *)pktinfo)->ipi_addr;
741 uint32_t host = ntohl(addr->s_addr);
742 unsigned char topbits = ((unsigned char *)&host)[3];
743 if (topbits < 224 || topbits > 239)
745 sep.endpoint.flags &= ~CA_MULTICAST;
750 CAConvertAddrToName(&srcAddr, namelen, sep.endpoint.addr, &sep.endpoint.port);
752 if (flags & CA_SECURE)
755 int ret = CAdecryptSsl(&sep, (uint8_t *)recvBuffer, recvLen);
756 OIC_LOG_V(INFO, TAG, "CAdecryptSsl returns [%d]", ret);
758 OIC_LOG(ERROR, TAG, "Encrypted message but no DTLS");
763 if (g_packetReceivedCallback)
765 OIC_LOG(DEBUG, TAG, "call receivedCB");
766 g_packetReceivedCallback(&sep, recvBuffer, recvLen);
770 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveMessage");
777 OIC_LOG(DEBUG, TAG, "IN");
778 OIC_LOG(DEBUG, TAG, "OUT");
781 static CASocketFd_t CACreateSocket(int family, uint16_t *port, bool isMulticast)
783 int socktype = SOCK_DGRAM;
785 socktype |= SOCK_CLOEXEC;
787 CASocketFd_t fd = socket(family, socktype, IPPROTO_UDP);
788 if (OC_INVALID_SOCKET == fd)
790 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", CAIPS_GET_ERROR);
791 return OC_INVALID_SOCKET;
794 #if !defined(SOCK_CLOEXEC) && defined(FD_CLOEXEC)
795 int fl = fcntl(fd, F_GETFD);
796 if (-1 == fl || -1 == fcntl(fd, F_SETFD, fl|FD_CLOEXEC))
798 OIC_LOG_V(ERROR, TAG, "set FD_CLOEXEC failed: %s", strerror(errno));
800 return OC_INVALID_SOCKET;
803 struct sockaddr_storage sa = { .ss_family = family };
804 socklen_t socklen = 0;
806 if (family == AF_INET6)
810 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, OPTVAL_T(&on), sizeof (on)))
812 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", CAIPS_GET_ERROR);
815 if (isMulticast && *port) // only do this for multicast ports
817 #if defined(IPV6_RECVPKTINFO)
818 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof (on)))
820 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, OPTVAL_T(&on), sizeof (on)))
823 OIC_LOG_V(ERROR, TAG, "IPV6_RECVPKTINFO failed: %s",CAIPS_GET_ERROR);
827 ((struct sockaddr_in6 *)&sa)->sin6_port = htons(*port);
828 socklen = sizeof (struct sockaddr_in6);
832 if (isMulticast && *port) // only do this for multicast ports
835 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IP, IP_PKTINFO, OPTVAL_T(&on), sizeof (on)))
837 OIC_LOG_V(ERROR, TAG, "IP_PKTINFO failed: %s", CAIPS_GET_ERROR);
841 ((struct sockaddr_in *)&sa)->sin_port = htons(*port);
842 socklen = sizeof (struct sockaddr_in);
845 if (isMulticast && *port) // use the given port
848 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, OPTVAL_T(&on), sizeof (on)))
850 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", CAIPS_GET_ERROR);
856 return OC_INVALID_SOCKET;
860 if (OC_SOCKET_ERROR == bind(fd, (struct sockaddr *)&sa, socklen))
862 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", CAIPS_GET_ERROR);
868 return OC_INVALID_SOCKET;
871 if (!*port) // return the assigned port
873 if (OC_SOCKET_ERROR == getsockname(fd, (struct sockaddr *)&sa, &socklen))
875 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", CAIPS_GET_ERROR);
881 return OC_INVALID_SOCKET;
883 *port = ntohs(family == AF_INET6 ?
884 ((struct sockaddr_in6 *)&sa)->sin6_port :
885 ((struct sockaddr_in *)&sa)->sin_port);
891 #define CHECKFD(FD) \
892 if (FD > caglobals.ip.maxfd) \
893 caglobals.ip.maxfd = FD;
894 #define NEWSOCKET(FAMILY, NAME, MULTICAST) \
895 if (caglobals.ip.NAME.fd == OC_INVALID_SOCKET) \
897 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
898 if (caglobals.ip.NAME.fd == OC_INVALID_SOCKET) \
900 caglobals.ip.NAME.port = 0; \
901 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
903 CHECKFD(caglobals.ip.NAME.fd) \
906 void CreateMulticastSocket()
908 OIC_LOG_V(INFO, TAG, "In %s", __func__);
910 if (caglobals.ip.ipv6enabled)
912 NEWSOCKET(AF_INET6, u6, false)
913 NEWSOCKET(AF_INET6, u6s, false)
914 NEWSOCKET(AF_INET6, m6, true)
915 NEWSOCKET(AF_INET6, m6s, true)
916 OIC_LOG_V(INFO, TAG, "IPv6 unicast port: %u", caglobals.ip.u6.port);
918 if (caglobals.ip.ipv4enabled)
920 NEWSOCKET(AF_INET, u4, false)
921 NEWSOCKET(AF_INET, u4s, false)
922 NEWSOCKET(AF_INET, m4, true)
923 NEWSOCKET(AF_INET, m4s, true)
924 OIC_LOG_V(INFO, TAG, "IPv4 unicast port: %u", caglobals.ip.u4.port);
927 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
930 void CloseMulticastSocket()
932 OIC_LOG_V(INFO, TAG, "In %s", __func__);
943 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
946 static void CAInitializeNetlink()
948 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
950 // create NETLINK fd for interface change notifications
951 struct sockaddr_nl sa = { AF_NETLINK, 0, 0,
952 RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR };
954 caglobals.ip.netlinkFd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE);
955 if (caglobals.ip.netlinkFd == OC_INVALID_SOCKET)
957 OIC_LOG_V(ERROR, TAG, "netlink socket failed: %s", strerror(errno));
961 int r = bind(caglobals.ip.netlinkFd, (struct sockaddr *)&sa, sizeof (sa));
964 OIC_LOG_V(ERROR, TAG, "netlink bind failed: %s", strerror(errno));
965 close(caglobals.ip.netlinkFd);
966 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
970 CHECKFD(caglobals.ip.netlinkFd);
973 #elif defined (__TIZENRT__) // pkmsgq
974 struct mq_attr lq_attr;
975 lq_attr.mq_maxmsg = 10;
976 lq_attr.mq_msgsize = 4;
977 lq_attr.mq_flags = 0;
978 g_nwevent_mqfd = mq_open("netlink_evtq", O_RDWR | O_NONBLOCK | O_CREAT, 0666, &lq_attr);
979 if (g_nwevent_mqfd == (mqd_t) - 1)
981 OIC_LOG_V(ERROR, TAG,"RECV mq_open failed\n");
987 static void CAInitializeFastShutdownMechanism()
989 caglobals.ip.selectTimeout = -1; // don't poll for shutdown
991 #if defined(WSA_WAIT_EVENT_0)
992 caglobals.ip.shutdownEvent = WSACreateEvent();
993 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
997 #elif defined(HAVE_PIPE2)
999 ret = pipe2(caglobals.ip.shutdownFds, O_CLOEXEC);
1000 CHECKFD(caglobals.ip.shutdownFds[0]);
1001 CHECKFD(caglobals.ip.shutdownFds[1]);
1005 ret = pipe(caglobals.ip.shutdownFds);
1008 ret = fcntl(caglobals.ip.shutdownFds[0], F_GETFD);
1011 ret = fcntl(caglobals.ip.shutdownFds[0], F_SETFD, ret|FD_CLOEXEC);
1015 ret = fcntl(caglobals.ip.shutdownFds[1], F_GETFD);
1019 ret = fcntl(caglobals.ip.shutdownFds[1], F_SETFD, ret|FD_CLOEXEC);
1023 close(caglobals.ip.shutdownFds[1]);
1024 close(caglobals.ip.shutdownFds[0]);
1025 caglobals.ip.shutdownFds[0] = -1;
1026 caglobals.ip.shutdownFds[1] = -1;
1029 CHECKFD(caglobals.ip.shutdownFds[0]);
1030 CHECKFD(caglobals.ip.shutdownFds[1]);
1035 OIC_LOG_V(ERROR, TAG, "fast shutdown mechanism init failed: %s", CAIPS_GET_ERROR);
1036 caglobals.ip.selectTimeout = SELECT_TIMEOUT; //poll needed for shutdown
1040 CAResult_t CAIPStartServer(const ca_thread_pool_t threadPool)
1042 CAResult_t res = CA_STATUS_OK;
1044 if (caglobals.ip.started)
1048 #if defined (_WIN32)
1049 WORD wVersionRequested = MAKEWORD(2, 2);
1050 WSADATA wsaData ={.wVersion = 0};
1051 int err = WSAStartup(wVersionRequested, &wsaData);
1054 OIC_LOG_V(ERROR, TAG, "WSAStartup failed: %i", err);
1055 return CA_STATUS_FAILED;
1057 OIC_LOG(DEBUG, TAG, "WSAStartup Succeeded");
1059 if (!IPv4MulticastAddress.s_addr)
1061 (void)inet_pton(AF_INET, IPv4_MULTICAST, &IPv4MulticastAddress);
1062 (void)inet_pton(AF_INET6, IPv6_MULTICAST_INT, &IPv6MulticastAddressInt);
1063 (void)inet_pton(AF_INET6, IPv6_MULTICAST_LNK, &IPv6MulticastAddressLnk);
1064 (void)inet_pton(AF_INET6, IPv6_MULTICAST_RLM, &IPv6MulticastAddressRlm);
1065 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ADM, &IPv6MulticastAddressAdm);
1066 (void)inet_pton(AF_INET6, IPv6_MULTICAST_SIT, &IPv6MulticastAddressSit);
1067 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ORG, &IPv6MulticastAddressOrg);
1068 (void)inet_pton(AF_INET6, IPv6_MULTICAST_GLB, &IPv6MulticastAddressGlb);
1071 if (!caglobals.ip.ipv6enabled && !caglobals.ip.ipv4enabled)
1073 caglobals.ip.ipv4enabled = true; // only needed to run CA tests
1076 CreateMulticastSocket();
1078 OIC_LOG_V(INFO, TAG,
1079 "socket summary: u6=%d, u6s=%d, u4=%d, u4s=%d, m6=%d, m6s=%d, m4=%d, m4s=%d",
1080 caglobals.ip.u6.fd, caglobals.ip.u6s.fd, caglobals.ip.u4.fd, caglobals.ip.u4s.fd,
1081 caglobals.ip.m6.fd, caglobals.ip.m6s.fd, caglobals.ip.m4.fd, caglobals.ip.m4s.fd);
1083 OIC_LOG_V(INFO, TAG,
1084 "port summary: u6 port=%d, u6s port=%d, u4 port=%d, u4s port=%d, m6 port=%d,"
1085 "m6s port=%d, m4 port=%d, m4s port=%d",
1086 caglobals.ip.u6.port, caglobals.ip.u6s.port, caglobals.ip.u4.port,
1087 caglobals.ip.u4s.port, caglobals.ip.m6.port, caglobals.ip.m6s.port,
1088 caglobals.ip.m4.port, caglobals.ip.m4s.port);
1089 #if defined (SIO_GET_EXTENSION_FUNCTION_POINTER)
1090 caglobals.ip.wsaRecvMsg = NULL;
1091 GUID GuidWSARecvMsg = WSAID_WSARECVMSG;
1093 err = WSAIoctl(caglobals.ip.u4.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &GuidWSARecvMsg, sizeof(GuidWSARecvMsg), &(caglobals.ip.wsaRecvMsg), sizeof(caglobals.ip.wsaRecvMsg), &copied, 0, 0);
1096 OIC_LOG_V(ERROR, TAG, "WSAIoctl failed %i", WSAGetLastError());
1097 return CA_STATUS_FAILED;
1100 // set up appropriate FD mechanism for fast shutdown
1101 CAInitializeFastShutdownMechanism();
1103 // create source of network interface change notifications
1104 CAInitializeNetlink();
1106 caglobals.ip.selectTimeout = CAGetPollingInterval(caglobals.ip.selectTimeout);
1108 res = CAIPStartListenServer();
1109 if (CA_STATUS_OK != res)
1111 OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", res);
1115 caglobals.ip.terminate = false;
1117 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL, NULL);
1119 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL, NULL, "IoT_ReceiveHandler",
1120 CONFIG_IOTIVITY_RECEIVEHANDLER_PTHREAD_STACKSIZE);
1122 if (CA_STATUS_OK != res)
1124 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
1128 OIC_LOG(INFO, TAG, "CAReceiveHandler thread started successfully.");
1130 caglobals.ip.started = true;
1131 return CA_STATUS_OK;
1134 void CAIPStopServer()
1136 caglobals.ip.started = false;
1137 caglobals.ip.terminate = true;
1139 CADeInitializeIPGlobals();
1141 #if !defined(WSA_WAIT_EVENT_0)
1143 if (caglobals.ip.shutdownFds[1] != -1)
1145 close(caglobals.ip.shutdownFds[1]);
1146 // receive thread will stop immediately
1150 // receive thread will stop in SELECT_TIMEOUT seconds.
1154 // receive thread will stop immediately.
1155 if (!WSASetEvent(caglobals.ip.shutdownEvent))
1157 OIC_LOG_V(DEBUG, TAG, "set shutdown event failed: %#08X", GetLastError());
1161 OIC_LOG(INFO, TAG, "Adapter terminated successfully");
1164 static void applyMulticastToInterface4(uint32_t ifindex)
1166 if (!caglobals.ip.ipv4enabled)
1171 #if defined(USE_IP_MREQN)
1172 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1173 .imr_address.s_addr = htonl(INADDR_ANY),
1174 .imr_ifindex = ifindex };
1176 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1177 .imr_interface.s_addr = htonl(ifindex) };
1180 int ret = setsockopt(caglobals.ip.m4.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1181 if (OC_SOCKET_ERROR == ret)
1183 #if !defined(WSAEINVAL)
1184 if (EADDRINUSE != errno)
1186 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv4 Flavor)
1189 OIC_LOG_V(ERROR, TAG, " IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1192 ret = setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1193 if (OC_SOCKET_ERROR == ret)
1195 #if !defined(WSAEINVAL)
1196 if (EADDRINUSE != errno)
1198 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv4 Flavor)
1201 OIC_LOG_V(ERROR, TAG, "SECURE IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1206 static void applyMulticast6(int fd, struct in6_addr *addr, uint32_t ifindex)
1209 struct ipv6_mreq mreq = {.ipv6mr_multiaddr = {{{0}}},
1210 .ipv6mr_interface = ifindex };
1212 // VS2013 has problems with struct copies inside struct initializers, so copy separately.
1213 mreq.ipv6mr_multiaddr = *addr;
1215 int ret = setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, OPTVAL_T(&mreq), sizeof (mreq));
1216 if (OC_SOCKET_ERROR == ret)
1218 #if !defined(_WIN32)
1219 if (EADDRINUSE != errno)
1221 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv6 Flavor)
1224 OIC_LOG_V(ERROR, TAG, "IPv6 IPV6_JOIN_GROUP failed: %s", CAIPS_GET_ERROR);
1230 static void applyMulticastToInterface6(uint32_t ifindex)
1232 if (!caglobals.ip.ipv6enabled)
1236 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressInt, ifindex);
1237 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressLnk, ifindex);
1238 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressRlm, ifindex);
1239 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressAdm, ifindex);
1240 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressSit, ifindex);
1241 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressOrg, ifindex);
1242 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressGlb, ifindex);
1244 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressInt, ifindex);
1245 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressLnk, ifindex);
1246 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressRlm, ifindex);
1247 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressAdm, ifindex);
1248 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressSit, ifindex);
1249 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressOrg, ifindex);
1250 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressGlb, ifindex);
1253 CAResult_t CAIPStartListenServer()
1255 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1258 OIC_LOG_V(ERROR, TAG, "CAIPGetInterfaceInformation() failed: %s", strerror(errno));
1259 return CA_STATUS_FAILED;
1262 uint32_t len = u_arraylist_length(iflist);
1263 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1265 for (uint32_t i = 0; i < len; i++)
1267 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1273 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1277 if (ifitem->family == AF_INET)
1279 OIC_LOG_V(DEBUG, TAG, "Adding IPv4 interface(%d) to multicast group", ifitem->index);
1280 applyMulticastToInterface4(ifitem->index);
1282 if (ifitem->family == AF_INET6)
1284 OIC_LOG_V(DEBUG, TAG, "Adding IPv6 interface(%d) to multicast group", ifitem->index);
1285 applyMulticastToInterface6(ifitem->index);
1289 u_arraylist_destroy(iflist);
1290 return CA_STATUS_OK;
1293 CAResult_t CAIPStopListenServer()
1295 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1298 OIC_LOG_V(ERROR, TAG, "Get interface info failed: %s", strerror(errno));
1299 return CA_STATUS_FAILED;
1302 uint32_t len = u_arraylist_length(iflist);
1303 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1305 for (uint32_t i = 0; i < len; i++)
1307 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1313 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1317 if (ifitem->family == AF_INET)
1321 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s cloed", ifitem->name);
1323 if (ifitem->family == AF_INET6)
1327 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
1330 u_arraylist_destroy(iflist);
1331 return CA_STATUS_OK;
1334 void CAProcessNewInterface(CAInterface_t *ifitem)
1338 OIC_LOG(DEBUG, TAG, "ifitem is null");
1342 if (ifitem->family == AF_INET6)
1344 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv6 interface(%d) to multicast group", ifitem->index);
1345 applyMulticastToInterface6(ifitem->index);
1347 if (ifitem->family == AF_INET)
1349 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv4 interface(%d) to multicast group", ifitem->index);
1350 applyMulticastToInterface4(ifitem->index);
1354 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
1356 g_packetReceivedCallback = callback;
1359 static void sendData(int fd, const CAEndpoint_t *endpoint,
1360 const void *data, uint32_t dlen,
1361 const char *cast, const char *fam)
1363 OIC_LOG(DEBUG, TAG, "IN");
1367 OIC_LOG(DEBUG, TAG, "endpoint is null");
1368 if (g_ipErrorHandler)
1370 g_ipErrorHandler(endpoint, data, dlen, CA_STATUS_INVALID_PARAM);
1375 (void)cast; // eliminates release warning
1378 struct sockaddr_storage sock = { .ss_family = 0 };
1379 CAConvertNameToAddr(endpoint->addr, endpoint->port, &sock);
1381 socklen_t socklen = 0;
1382 if (sock.ss_family == AF_INET6)
1384 /** @todo figure out correct usage for ifindex, and sin6_scope_id */
1385 socklen = sizeof(struct sockaddr_in6);
1389 socklen = sizeof(struct sockaddr_in);
1393 const char *secure = (endpoint->flags & CA_SECURE) ? "secure " : "";
1395 #if !defined(_WIN32)
1396 ssize_t len = sendto(fd, data, dlen, 0, (struct sockaddr *)&sock, socklen);
1397 if (OC_SOCKET_ERROR == len)
1399 // If logging is not defined/enabled.
1400 if (g_ipErrorHandler)
1402 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1404 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %s", secure, cast, fam, strerror(errno));
1405 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1406 len, false, strerror(errno));
1410 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %zd bytes", secure, cast, fam, len);
1411 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1419 len = sendto(fd, ((char*)data) + sent, dlen - sent, 0, (struct sockaddr *)&sock, socklen);
1420 if (OC_SOCKET_ERROR == len)
1422 err = WSAGetLastError();
1423 if ((WSAEWOULDBLOCK != err) && (WSAENOBUFS != err))
1425 // If logging is not defined/enabled.
1426 if (g_ipErrorHandler)
1428 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1431 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %i", secure, cast, fam, err);
1439 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo (Partial Send) is successful: "
1440 "currently sent: %ld bytes, "
1441 "total sent: %ld bytes, "
1442 "remaining: %ld bytes",
1443 secure, cast, fam, len, sent, dlen-sent);
1447 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %ld bytes",
1448 secure, cast, fam, len);
1451 } while ((OC_SOCKET_ERROR == len) && ((WSAEWOULDBLOCK == err) || (WSAENOBUFS == err)) || (sent < dlen));
1455 static void sendMulticastData6(const u_arraylist_t *iflist,
1456 CAEndpoint_t *endpoint,
1457 const void *data, uint32_t datalen)
1461 OIC_LOG(DEBUG, TAG, "endpoint is null");
1465 int scope = endpoint->flags & CA_SCOPE_MASK;
1466 char *ipv6mcname = ipv6mcnames[scope];
1469 OIC_LOG_V(INFO, TAG, "IPv6 multicast scope invalid: %d", scope);
1472 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), ipv6mcname);
1473 int fd = caglobals.ip.u6.fd;
1475 uint32_t len = u_arraylist_length(iflist);
1476 for (uint32_t i = 0; i < len; i++)
1478 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1483 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1487 if (ifitem->family != AF_INET6)
1492 bool isMobile = false;
1493 for (uint32_t j = 0; j < MOBILE_INTERFACES; j++)
1495 if (strstr(ifitem->name, mobileinferfaces[j]))
1506 int index = ifitem->index;
1507 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, OPTVAL_T(&index), sizeof (index)))
1509 OIC_LOG_V(ERROR, TAG, "setsockopt6 failed: %s", CAIPS_GET_ERROR);
1514 // Set multicast packet TTL; default TTL is 1
1515 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &multicastTTL, sizeof(multicastTTL)))
1517 OIC_LOG_V(ERROR, TAG, "IPV6_MULTICAST_HOPS failed: %s", CAIPS_GET_ERROR);
1520 sendData(fd, endpoint, data, datalen, "multicast", "ipv6");
1524 static void sendMulticastData4(const u_arraylist_t *iflist,
1525 CAEndpoint_t *endpoint,
1526 const void *data, uint32_t datalen)
1528 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1530 #if defined(USE_IP_MREQN)
1531 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1532 .imr_address.s_addr = htonl(INADDR_ANY),
1535 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1536 .imr_interface = {0}};
1539 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), IPv4_MULTICAST);
1540 int fd = caglobals.ip.u4.fd;
1542 uint32_t len = u_arraylist_length(iflist);
1543 for (uint32_t i = 0; i < len; i++)
1545 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1550 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1554 if (ifitem->family != AF_INET)
1559 bool isMobile = false;
1560 for (uint32_t j = 0; j < MOBILE_INTERFACES; j++)
1562 if (strstr(ifitem->name, mobileinferfaces[j]))
1573 #if defined(USE_IP_MREQN)
1574 mreq.imr_ifindex = ifitem->index;
1576 mreq.imr_interface.s_addr = htonl(ifitem->index);
1578 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, OPTVAL_T(&mreq), sizeof (mreq)))
1580 OIC_LOG_V(ERROR, TAG, "send IP_MULTICAST_IF failed: %s (using defualt)",
1584 // Set multicast packet TTL; default TTL is 1
1585 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL, &multicastTTL, sizeof(multicastTTL)))
1587 OIC_LOG_V(ERROR, TAG, "IP_MULTICAST_TTL failed: %s", CAIPS_GET_ERROR);
1589 sendData(fd, endpoint, data, datalen, "multicast", "ipv4");
1593 void CAIPSendData(CAEndpoint_t *endpoint, const void *data, uint32_t datalen,
1596 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1597 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
1599 bool isSecure = (endpoint->flags & CA_SECURE) != 0;
1603 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1605 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1608 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1612 if ((endpoint->flags & CA_IPV6) && caglobals.ip.ipv6enabled)
1614 sendMulticastData6(iflist, endpoint, data, datalen);
1616 if ((endpoint->flags & CA_IPV4) && caglobals.ip.ipv4enabled)
1618 sendMulticastData4(iflist, endpoint, data, datalen);
1621 u_arraylist_destroy(iflist);
1625 if (!endpoint->port) // unicast discovery
1627 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1631 if (caglobals.ip.ipv6enabled && (endpoint->flags & CA_IPV6))
1633 fd = isSecure ? caglobals.ip.u6s.fd : caglobals.ip.u6.fd;
1634 #ifndef __WITH_DTLS__
1635 fd = caglobals.ip.u6.fd;
1637 sendData(fd, endpoint, data, datalen, "unicast", "ipv6");
1639 if (caglobals.ip.ipv4enabled && (endpoint->flags & CA_IPV4))
1641 fd = isSecure ? caglobals.ip.u4s.fd : caglobals.ip.u4.fd;
1642 #ifndef __WITH_DTLS__
1643 fd = caglobals.ip.u4.fd;
1645 sendData(fd, endpoint, data, datalen, "unicast", "ipv4");
1650 CAResult_t CAGetIPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
1652 VERIFY_NON_NULL(info, TAG, "info is NULL");
1653 VERIFY_NON_NULL(size, TAG, "size is NULL");
1655 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1658 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1659 return CA_STATUS_FAILED;
1662 uint32_t len = u_arraylist_length(iflist);
1663 uint32_t length = len;
1665 #ifdef __WITH_DTLS__
1666 //If DTLS is supported, each interface can support secure port as well
1670 CAEndpoint_t *eps = (CAEndpoint_t *)OICCalloc(length, sizeof (CAEndpoint_t));
1673 OIC_LOG(ERROR, TAG, "Malloc Failed");
1674 u_arraylist_destroy(iflist);
1675 return CA_MEMORY_ALLOC_FAILED;
1678 for (uint32_t i = 0, j = 0; i < len; i++)
1680 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1686 eps[j].adapter = CA_ADAPTER_IP;
1689 if (ifitem->family == AF_INET6)
1691 eps[j].flags = CA_IPV6;
1692 eps[j].port = caglobals.ip.u6.port;
1696 eps[j].flags = CA_IPV4;
1697 eps[j].port = caglobals.ip.u4.port;
1699 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1701 #ifdef __WITH_DTLS__
1704 eps[j].adapter = CA_ADAPTER_IP;
1707 if (ifitem->family == AF_INET6)
1709 eps[j].flags = CA_IPV6 | CA_SECURE;
1710 eps[j].port = caglobals.ip.u6s.port;
1714 eps[j].flags = CA_IPV4 | CA_SECURE;
1715 eps[j].port = caglobals.ip.u4s.port;
1717 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1725 u_arraylist_destroy(iflist);
1727 return CA_STATUS_OK;
1730 void CAIPSetErrorHandler(CAIPErrorHandleCallback errorHandleCallback)
1732 g_ipErrorHandler = errorHandleCallback;
1735 CAResult_t CAIPSetMulticastTTL(size_t ttl)
1738 return CA_STATUS_OK;
1741 CAResult_t CAIPGetMulticastTTL(size_t *ttl)
1743 VERIFY_NON_NULL(ttl, TAG, "ttl is NULL");
1745 *ttl = multicastTTL;
1746 return CA_STATUS_OK;