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)
222 OIC_LOG(DEBUG, TAG, "Called clean-up handler");
224 if (caglobals.ip.shutdownFds[0] != OC_INVALID_SOCKET)
226 close(caglobals.ip.shutdownFds[0]);
227 caglobals.ip.shutdownFds[0] = OC_INVALID_SOCKET;
231 static void CAReceiveHandler(void *data)
234 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
236 pthread_cleanup_push(CAIPCleanupHandler, NULL);
238 while (!caglobals.ip.terminate)
240 CAFindReadyMessage();
243 pthread_cleanup_pop(cleanup_pop_arg);
245 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
248 static void CAReceiveHandler(void *data)
251 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
253 while (!caglobals.ip.terminate)
255 CAFindReadyMessage();
258 if (caglobals.ip.shutdownFds[0] != OC_INVALID_SOCKET)
260 close(caglobals.ip.shutdownFds[0]);
261 caglobals.ip.shutdownFds[0] = OC_INVALID_SOCKET;
264 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
268 #if !defined(WSA_WAIT_EVENT_0)
270 #define CLOSE_SOCKET(TYPE) \
271 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
273 close(caglobals.ip.TYPE.fd); \
274 caglobals.ip.TYPE.fd = OC_INVALID_SOCKET; \
277 #define SET(TYPE, FDS) \
278 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
280 FD_SET(caglobals.ip.TYPE.fd, FDS); \
283 #define ISSET(TYPE, FDS, FLAGS) \
284 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET && FD_ISSET(caglobals.ip.TYPE.fd, FDS)) \
286 fd = caglobals.ip.TYPE.fd; \
291 static void CAFindReadyMessage()
294 struct timeval timeout;
296 timeout.tv_sec = caglobals.ip.selectTimeout;
298 struct timeval *tv = caglobals.ip.selectTimeout == -1 ? NULL : &timeout;
310 if (caglobals.ip.shutdownFds[0] != -1)
312 FD_SET(caglobals.ip.shutdownFds[0], &readFds);
315 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
317 FD_SET(caglobals.ip.netlinkFd, &readFds);
320 int ret = select(caglobals.ip.maxfd + 1, &readFds, NULL, NULL, tv);
322 if (caglobals.ip.terminate)
324 OIC_LOG_V(INFO, TAG, "Packet receiver Stop request received.");
328 u_arraylist_t *iflist = CAFindInterfaceChange();
331 uint32_t listLength = u_arraylist_length(iflist);
332 for (uint32_t i = 0; i < listLength; i++)
334 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
337 CAProcessNewInterface(ifitem);
340 u_arraylist_destroy(iflist);
345 CASelectReturned(&readFds, ret);
349 OIC_LOG_V(FATAL, TAG, "select error %s", CAIPS_GET_ERROR);
353 static void CASelectReturned(fd_set *readFds, int ret)
356 CASocketFd_t fd = OC_INVALID_SOCKET;
357 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
359 while (!caglobals.ip.terminate)
361 ISSET(u6, readFds, CA_IPV6)
362 else ISSET(u6s, readFds, CA_IPV6 | CA_SECURE)
363 else ISSET(u4, readFds, CA_IPV4)
364 else ISSET(u4s, readFds, CA_IPV4 | CA_SECURE)
365 else ISSET(m6, readFds, CA_MULTICAST | CA_IPV6)
366 else ISSET(m6s, readFds, CA_MULTICAST | CA_IPV6 | CA_SECURE)
367 else ISSET(m4, readFds, CA_MULTICAST | CA_IPV4)
368 else ISSET(m4s, readFds, CA_MULTICAST | CA_IPV4 | CA_SECURE)
369 else if ((caglobals.ip.netlinkFd != OC_INVALID_SOCKET) && FD_ISSET(caglobals.ip.netlinkFd, readFds))
372 u_arraylist_t *iflist = CAFindInterfaceChange();
375 uint32_t listLength = u_arraylist_length(iflist);
376 for (uint32_t i = 0; i < listLength; i++)
378 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
381 CAProcessNewInterface(ifitem);
384 u_arraylist_destroy(iflist);
390 else if (FD_ISSET(caglobals.ip.shutdownFds[0], readFds))
393 ssize_t len = read(caglobals.ip.shutdownFds[0], buf, sizeof (buf));
405 (void)CAReceiveMessage(fd, flags);
410 #else // if defined(WSA_WAIT_EVENT_0)
412 #define CLOSE_SOCKET(TYPE) \
413 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
415 closesocket(caglobals.ip.TYPE.fd); \
416 caglobals.ip.TYPE.fd = OC_INVALID_SOCKET; \
419 #define PUSH_HANDLE(HANDLE, ARRAY, INDEX) \
421 ARRAY[INDEX] = HANDLE; \
425 // Turn handle into WSAEvent and push to ARRAY
426 #define PUSH_SOCKET(SOCKET, ARRAY, INDEX) \
427 if (SOCKET != OC_INVALID_SOCKET) \
430 NewEvent = WSACreateEvent(); \
431 if (WSA_INVALID_EVENT != NewEvent) \
433 if (0 != WSAEventSelect(SOCKET, NewEvent, FD_READ)) \
435 OIC_LOG_V(ERROR, TAG, "WSAEventSelect failed 0x%08x ", WSAGetLastError()); \
436 if (!WSACloseEvent(NewEvent)) \
438 OIC_LOG_V(ERROR, TAG, "WSACloseEvent(NewEvent) failed 0x%08x", WSAGetLastError()); \
443 PUSH_HANDLE(NewEvent, ARRAY, INDEX); \
448 OIC_LOG_V(ERROR, TAG, "WSACreateEvent(NewEvent) failed 0x%08x", WSAGetLastError()); \
452 #define INSERT_SOCKET(FD, ARRAY, INDEX) \
454 if (OC_INVALID_SOCKET != FD) \
461 // Inserts the socket into the SOCKET_ARRAY and pushes the socket event into EVENT_ARRAY
462 #define PUSH_IP_SOCKET(TYPE, EVENT_ARRAY, SOCKET_ARRAY, INDEX) \
464 if (OC_INVALID_SOCKET != caglobals.ip.TYPE.fd) \
466 INSERT_SOCKET(caglobals.ip.TYPE.fd, SOCKET_ARRAY, INDEX); \
467 PUSH_SOCKET(caglobals.ip.TYPE.fd, EVENT_ARRAY, INDEX); \
471 #define IS_MATCHING_IP_SOCKET(TYPE, SOCKET, FLAGS) \
472 if ((caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) && (caglobals.ip.TYPE.fd == SOCKET)) \
474 fd = caglobals.ip.TYPE.fd; \
478 #define EVENT_ARRAY_SIZE 10
480 static void CAFindReadyMessage()
482 CASocketFd_t socketArray[EVENT_ARRAY_SIZE];
483 HANDLE eventArray[EVENT_ARRAY_SIZE];
487 // socketArray and eventArray should have same number of elements
488 OC_STATIC_ASSERT(_countof(socketArray) == _countof(eventArray), "Arrays should have same number of elements");
490 PUSH_IP_SOCKET(u6, eventArray, socketArray, arraySize);
491 PUSH_IP_SOCKET(u6s, eventArray, socketArray, arraySize);
492 PUSH_IP_SOCKET(u4, eventArray, socketArray, arraySize);
493 PUSH_IP_SOCKET(u4s, eventArray, socketArray, arraySize);
494 PUSH_IP_SOCKET(m6, eventArray, socketArray, arraySize);
495 PUSH_IP_SOCKET(m6s, eventArray, socketArray, arraySize);
496 PUSH_IP_SOCKET(m4, eventArray, socketArray, arraySize);
497 PUSH_IP_SOCKET(m4s, eventArray, socketArray, arraySize);
499 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
501 INSERT_SOCKET(OC_INVALID_SOCKET, socketArray, arraySize);
502 PUSH_HANDLE(caglobals.ip.shutdownEvent, eventArray, arraySize);
505 /** @todo Support netlink events */
507 // Should not have overflowed buffer
508 assert(arraySize <= (_countof(socketArray)));
510 // Timeout is unnecessary on Windows
511 assert(-1 == caglobals.ip.selectTimeout);
513 while (!caglobals.ip.terminate)
515 int ret = WSAWaitForMultipleEvents(arraySize, eventArray, FALSE, WSA_INFINITE, FALSE);
519 case WSA_WAIT_FAILED:
520 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_FAILED 0x%08x", WSAGetLastError());
522 case WSA_WAIT_IO_COMPLETION:
523 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_IO_COMPLETION 0x%08x", WSAGetLastError());
525 case WSA_WAIT_TIMEOUT:
526 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_TIMEOUT 0x%08x", WSAGetLastError());
529 eventIndex = ret - WSA_WAIT_EVENT_0;
530 if ((eventIndex >= 0) && (eventIndex < arraySize))
532 if (false == WSAResetEvent(eventArray[eventIndex]))
534 OIC_LOG_V(ERROR, TAG, "WSAResetEvent failed 0x%08x", WSAGetLastError());
537 // Break out if shutdownEvent is triggered.
538 if ((caglobals.ip.shutdownEvent != WSA_INVALID_EVENT) &&
539 (caglobals.ip.shutdownEvent == eventArray[eventIndex]))
543 CAEventReturned(socketArray[eventIndex]);
547 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents failed 0x%08x", WSAGetLastError());
554 while (arraySize > 0)
557 if (!WSACloseEvent(eventArray[arraySize]))
559 OIC_LOG_V(ERROR, TAG, "WSACloseEvent (Index %i) failed 0x%08x", arraySize, WSAGetLastError());
563 if (caglobals.ip.terminate)
565 caglobals.ip.shutdownEvent = WSA_INVALID_EVENT;
570 static void CAEventReturned(CASocketFd_t socket)
572 CASocketFd_t fd = OC_INVALID_SOCKET;
573 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
575 while (!caglobals.ip.terminate)
577 IS_MATCHING_IP_SOCKET(u6, socket, CA_IPV6)
578 else IS_MATCHING_IP_SOCKET(u6s, socket, CA_IPV6 | CA_SECURE)
579 else IS_MATCHING_IP_SOCKET(u4, socket, CA_IPV4)
580 else IS_MATCHING_IP_SOCKET(u4s, socket, CA_IPV4 | CA_SECURE)
581 else IS_MATCHING_IP_SOCKET(m6, socket, CA_MULTICAST | CA_IPV6)
582 else IS_MATCHING_IP_SOCKET(m6s, socket, CA_MULTICAST | CA_IPV6 | CA_SECURE)
583 else IS_MATCHING_IP_SOCKET(m4, socket, CA_MULTICAST | CA_IPV4)
584 else IS_MATCHING_IP_SOCKET(m4s, socket, CA_MULTICAST | CA_IPV4 | CA_SECURE)
589 (void)CAReceiveMessage(socket, flags);
590 // We will never get more than one match per socket, so always break.
597 void CADeInitializeIPGlobals()
599 CloseMulticastSocket();
601 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
604 closesocket(caglobals.ip.netlinkFd);
606 close(caglobals.ip.netlinkFd);
608 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
612 static CAResult_t CAReceiveMessage(CASocketFd_t fd, CATransportFlags_t flags)
614 OIC_LOG(DEBUG, TAG, "IN - CAReceiveMessage");
615 char recvBuffer[RECV_MSG_BUF_LEN] = {0};
621 struct sockaddr_storage srcAddr = { .ss_family = 0 };
622 unsigned char *pktinfo = NULL;
623 #if !defined(WSA_CMSG_DATA)
624 struct cmsghdr *cmp = NULL;
625 struct iovec iov = { .iov_base = recvBuffer, .iov_len = sizeof (recvBuffer) };
629 unsigned char data[CMSG_SPACE(sizeof (struct in6_pktinfo))];
634 namelen = sizeof (struct sockaddr_in6);
635 level = IPPROTO_IPV6;
637 len = sizeof (struct in6_pktinfo);
641 namelen = sizeof (struct sockaddr_in);
644 len = sizeof (struct in6_pktinfo);
647 struct msghdr msg = { .msg_name = &srcAddr,
648 .msg_namelen = namelen,
651 .msg_control = &cmsg,
652 .msg_controllen = CMSG_SPACE(len) };
654 ssize_t recvLen = recvmsg(fd, &msg, flags);
655 if (OC_SOCKET_ERROR == recvLen)
657 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
658 return CA_STATUS_FAILED;
660 OIC_LOG_V(DEBUG, TAG, "recvd %u bytes from recvmsg", recvLen);
662 if (flags & CA_MULTICAST)
664 for (cmp = CMSG_FIRSTHDR(&msg); cmp != NULL; cmp = CMSG_NXTHDR(&msg, cmp))
666 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
668 pktinfo = CMSG_DATA(cmp);
672 #else // if defined(WSA_CMSG_DATA)
676 uint8_t data[WSA_CMSG_SPACE(sizeof (IN6_PKTINFO))];
678 memset(&cmsg, 0, sizeof(cmsg));
682 namelen = sizeof (struct sockaddr_in6);
683 level = IPPROTO_IPV6;
688 namelen = sizeof (struct sockaddr_in);
693 WSABUF iov = {.len = sizeof (recvBuffer), .buf = recvBuffer};
694 WSAMSG msg = {.name = (PSOCKADDR)&srcAddr,
698 .Control = {.buf = cmsg.data, .len = sizeof (cmsg)}
701 uint32_t recvLen = 0;
702 uint32_t ret = caglobals.ip.wsaRecvMsg(fd, &msg, &recvLen, 0,0);
703 OIC_LOG_V(DEBUG, TAG, "WSARecvMsg recvd %u bytes", recvLen);
704 if (OC_SOCKET_ERROR == ret)
706 OIC_LOG_V(ERROR, TAG, "WSARecvMsg failed %i", WSAGetLastError());
709 if (flags & CA_MULTICAST)
711 for (WSACMSGHDR *cmp = WSA_CMSG_FIRSTHDR(&msg); cmp != NULL;
712 cmp = WSA_CMSG_NXTHDR(&msg, cmp))
714 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
716 pktinfo = WSA_CMSG_DATA(cmp);
720 #endif // !defined(WSA_CMSG_DATA)
721 CASecureEndpoint_t sep = {.endpoint = {.adapter = CA_ADAPTER_IP, .flags = flags}};
726 /** @todo figure out correct usage for ifindex, and sin6_scope_id.*/
727 if ((flags & CA_MULTICAST) && pktinfo)
729 struct in6_addr *addr = &(((struct in6_pktinfo *)pktinfo)->ipi6_addr);
730 unsigned char topbits = ((unsigned char *)addr)[0];
733 sep.endpoint.flags &= ~CA_MULTICAST;
740 if ((flags & CA_MULTICAST) && pktinfo)
742 struct in_addr *addr = &((struct in_pktinfo *)pktinfo)->ipi_addr;
743 uint32_t host = ntohl(addr->s_addr);
744 unsigned char topbits = ((unsigned char *)&host)[3];
745 if (topbits < 224 || topbits > 239)
747 sep.endpoint.flags &= ~CA_MULTICAST;
752 CAConvertAddrToName(&srcAddr, namelen, sep.endpoint.addr, &sep.endpoint.port);
754 if (flags & CA_SECURE)
757 int ret = CAdecryptSsl(&sep, (uint8_t *)recvBuffer, recvLen);
758 OIC_LOG_V(INFO, TAG, "CAdecryptSsl returns [%d]", ret);
760 OIC_LOG(ERROR, TAG, "Encrypted message but no DTLS");
765 if (g_packetReceivedCallback)
767 OIC_LOG(DEBUG, TAG, "call receivedCB");
768 g_packetReceivedCallback(&sep, recvBuffer, recvLen);
772 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveMessage");
779 OIC_LOG(DEBUG, TAG, "IN");
780 OIC_LOG(DEBUG, TAG, "OUT");
783 static CASocketFd_t CACreateSocket(int family, uint16_t *port, bool isMulticast)
785 int socktype = SOCK_DGRAM;
787 socktype |= SOCK_CLOEXEC;
789 CASocketFd_t fd = socket(family, socktype, IPPROTO_UDP);
790 if (OC_INVALID_SOCKET == fd)
792 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", CAIPS_GET_ERROR);
793 return OC_INVALID_SOCKET;
796 #if !defined(SOCK_CLOEXEC) && defined(FD_CLOEXEC)
797 int fl = fcntl(fd, F_GETFD);
798 if (-1 == fl || -1 == fcntl(fd, F_SETFD, fl|FD_CLOEXEC))
800 OIC_LOG_V(ERROR, TAG, "set FD_CLOEXEC failed: %s", strerror(errno));
802 return OC_INVALID_SOCKET;
805 struct sockaddr_storage sa = { .ss_family = family };
806 socklen_t socklen = 0;
808 if (family == AF_INET6)
812 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, OPTVAL_T(&on), sizeof (on)))
814 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", CAIPS_GET_ERROR);
817 if (isMulticast && *port) // only do this for multicast ports
819 #if defined(IPV6_RECVPKTINFO)
820 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof (on)))
822 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, OPTVAL_T(&on), sizeof (on)))
825 OIC_LOG_V(ERROR, TAG, "IPV6_RECVPKTINFO failed: %s",CAIPS_GET_ERROR);
829 ((struct sockaddr_in6 *)&sa)->sin6_port = htons(*port);
830 socklen = sizeof (struct sockaddr_in6);
834 if (isMulticast && *port) // only do this for multicast ports
837 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IP, IP_PKTINFO, OPTVAL_T(&on), sizeof (on)))
839 OIC_LOG_V(ERROR, TAG, "IP_PKTINFO failed: %s", CAIPS_GET_ERROR);
843 ((struct sockaddr_in *)&sa)->sin_port = htons(*port);
844 socklen = sizeof (struct sockaddr_in);
847 if (isMulticast && *port) // use the given port
850 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, OPTVAL_T(&on), sizeof (on)))
852 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", CAIPS_GET_ERROR);
858 return OC_INVALID_SOCKET;
862 if (OC_SOCKET_ERROR == bind(fd, (struct sockaddr *)&sa, socklen))
864 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", CAIPS_GET_ERROR);
870 return OC_INVALID_SOCKET;
873 if (!*port) // return the assigned port
875 if (OC_SOCKET_ERROR == getsockname(fd, (struct sockaddr *)&sa, &socklen))
877 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", CAIPS_GET_ERROR);
883 return OC_INVALID_SOCKET;
885 *port = ntohs(family == AF_INET6 ?
886 ((struct sockaddr_in6 *)&sa)->sin6_port :
887 ((struct sockaddr_in *)&sa)->sin_port);
893 #define CHECKFD(FD) \
894 if (FD > caglobals.ip.maxfd) \
895 caglobals.ip.maxfd = FD;
896 #define NEWSOCKET(FAMILY, NAME, MULTICAST) \
897 if (caglobals.ip.NAME.fd == OC_INVALID_SOCKET) \
899 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
900 if (caglobals.ip.NAME.fd == OC_INVALID_SOCKET) \
902 caglobals.ip.NAME.port = 0; \
903 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
905 CHECKFD(caglobals.ip.NAME.fd) \
908 void CreateMulticastSocket()
910 OIC_LOG_V(INFO, TAG, "In %s", __func__);
912 if (caglobals.ip.ipv6enabled)
914 NEWSOCKET(AF_INET6, u6, false)
915 NEWSOCKET(AF_INET6, u6s, false)
916 NEWSOCKET(AF_INET6, m6, true)
917 NEWSOCKET(AF_INET6, m6s, true)
918 OIC_LOG_V(INFO, TAG, "IPv6 unicast port: %u", caglobals.ip.u6.port);
920 if (caglobals.ip.ipv4enabled)
922 NEWSOCKET(AF_INET, u4, false)
923 NEWSOCKET(AF_INET, u4s, false)
924 NEWSOCKET(AF_INET, m4, true)
925 NEWSOCKET(AF_INET, m4s, true)
926 OIC_LOG_V(INFO, TAG, "IPv4 unicast port: %u", caglobals.ip.u4.port);
929 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
932 void CloseMulticastSocket()
934 OIC_LOG_V(INFO, TAG, "In %s", __func__);
945 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
948 static void CAInitializeNetlink()
950 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
952 // create NETLINK fd for interface change notifications
953 struct sockaddr_nl sa = { AF_NETLINK, 0, 0,
954 RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR };
956 caglobals.ip.netlinkFd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE);
957 if (caglobals.ip.netlinkFd == OC_INVALID_SOCKET)
959 OIC_LOG_V(ERROR, TAG, "netlink socket failed: %s", strerror(errno));
963 int r = bind(caglobals.ip.netlinkFd, (struct sockaddr *)&sa, sizeof (sa));
966 OIC_LOG_V(ERROR, TAG, "netlink bind failed: %s", strerror(errno));
967 close(caglobals.ip.netlinkFd);
968 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
972 CHECKFD(caglobals.ip.netlinkFd);
975 #elif defined (__TIZENRT__) // pkmsgq
976 struct mq_attr lq_attr;
977 lq_attr.mq_maxmsg = 10;
978 lq_attr.mq_msgsize = 4;
979 lq_attr.mq_flags = 0;
980 g_nwevent_mqfd = mq_open("netlink_evtq", O_RDWR | O_NONBLOCK | O_CREAT, 0666, &lq_attr);
981 if (g_nwevent_mqfd == (mqd_t) - 1)
983 OIC_LOG_V(ERROR, TAG,"RECV mq_open failed\n");
989 static void CAInitializeFastShutdownMechanism()
991 caglobals.ip.selectTimeout = -1; // don't poll for shutdown
993 #if defined(WSA_WAIT_EVENT_0)
994 caglobals.ip.shutdownEvent = WSACreateEvent();
995 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
999 #elif defined(HAVE_PIPE2)
1001 ret = pipe2(caglobals.ip.shutdownFds, O_CLOEXEC);
1002 CHECKFD(caglobals.ip.shutdownFds[0]);
1003 CHECKFD(caglobals.ip.shutdownFds[1]);
1007 ret = pipe(caglobals.ip.shutdownFds);
1010 ret = fcntl(caglobals.ip.shutdownFds[0], F_GETFD);
1013 ret = fcntl(caglobals.ip.shutdownFds[0], F_SETFD, ret|FD_CLOEXEC);
1017 ret = fcntl(caglobals.ip.shutdownFds[1], F_GETFD);
1021 ret = fcntl(caglobals.ip.shutdownFds[1], F_SETFD, ret|FD_CLOEXEC);
1025 close(caglobals.ip.shutdownFds[1]);
1026 close(caglobals.ip.shutdownFds[0]);
1027 caglobals.ip.shutdownFds[0] = -1;
1028 caglobals.ip.shutdownFds[1] = -1;
1031 CHECKFD(caglobals.ip.shutdownFds[0]);
1032 CHECKFD(caglobals.ip.shutdownFds[1]);
1037 OIC_LOG_V(ERROR, TAG, "fast shutdown mechanism init failed: %s", CAIPS_GET_ERROR);
1038 caglobals.ip.selectTimeout = SELECT_TIMEOUT; //poll needed for shutdown
1042 CAResult_t CAIPStartServer(const ca_thread_pool_t threadPool)
1044 CAResult_t res = CA_STATUS_OK;
1046 if (caglobals.ip.started)
1050 #if defined (_WIN32)
1051 WORD wVersionRequested = MAKEWORD(2, 2);
1052 WSADATA wsaData ={.wVersion = 0};
1053 int err = WSAStartup(wVersionRequested, &wsaData);
1056 OIC_LOG_V(ERROR, TAG, "WSAStartup failed: %i", err);
1057 return CA_STATUS_FAILED;
1059 OIC_LOG(DEBUG, TAG, "WSAStartup Succeeded");
1061 if (!IPv4MulticastAddress.s_addr)
1063 (void)inet_pton(AF_INET, IPv4_MULTICAST, &IPv4MulticastAddress);
1064 (void)inet_pton(AF_INET6, IPv6_MULTICAST_INT, &IPv6MulticastAddressInt);
1065 (void)inet_pton(AF_INET6, IPv6_MULTICAST_LNK, &IPv6MulticastAddressLnk);
1066 (void)inet_pton(AF_INET6, IPv6_MULTICAST_RLM, &IPv6MulticastAddressRlm);
1067 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ADM, &IPv6MulticastAddressAdm);
1068 (void)inet_pton(AF_INET6, IPv6_MULTICAST_SIT, &IPv6MulticastAddressSit);
1069 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ORG, &IPv6MulticastAddressOrg);
1070 (void)inet_pton(AF_INET6, IPv6_MULTICAST_GLB, &IPv6MulticastAddressGlb);
1073 if (!caglobals.ip.ipv6enabled && !caglobals.ip.ipv4enabled)
1075 caglobals.ip.ipv4enabled = true; // only needed to run CA tests
1078 CreateMulticastSocket();
1080 OIC_LOG_V(INFO, TAG,
1081 "socket summary: u6=%d, u6s=%d, u4=%d, u4s=%d, m6=%d, m6s=%d, m4=%d, m4s=%d",
1082 caglobals.ip.u6.fd, caglobals.ip.u6s.fd, caglobals.ip.u4.fd, caglobals.ip.u4s.fd,
1083 caglobals.ip.m6.fd, caglobals.ip.m6s.fd, caglobals.ip.m4.fd, caglobals.ip.m4s.fd);
1085 OIC_LOG_V(INFO, TAG,
1086 "port summary: u6 port=%d, u6s port=%d, u4 port=%d, u4s port=%d, m6 port=%d,"
1087 "m6s port=%d, m4 port=%d, m4s port=%d",
1088 caglobals.ip.u6.port, caglobals.ip.u6s.port, caglobals.ip.u4.port,
1089 caglobals.ip.u4s.port, caglobals.ip.m6.port, caglobals.ip.m6s.port,
1090 caglobals.ip.m4.port, caglobals.ip.m4s.port);
1091 #if defined (SIO_GET_EXTENSION_FUNCTION_POINTER)
1092 caglobals.ip.wsaRecvMsg = NULL;
1093 GUID GuidWSARecvMsg = WSAID_WSARECVMSG;
1095 err = WSAIoctl(caglobals.ip.u4.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &GuidWSARecvMsg, sizeof(GuidWSARecvMsg), &(caglobals.ip.wsaRecvMsg), sizeof(caglobals.ip.wsaRecvMsg), &copied, 0, 0);
1098 OIC_LOG_V(ERROR, TAG, "WSAIoctl failed %i", WSAGetLastError());
1099 return CA_STATUS_FAILED;
1102 // set up appropriate FD mechanism for fast shutdown
1103 CAInitializeFastShutdownMechanism();
1105 // create source of network interface change notifications
1106 CAInitializeNetlink();
1108 caglobals.ip.selectTimeout = CAGetPollingInterval(caglobals.ip.selectTimeout);
1110 res = CAIPStartListenServer();
1111 if (CA_STATUS_OK != res)
1113 OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", res);
1117 caglobals.ip.terminate = false;
1119 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL, NULL);
1121 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL, NULL, "IoT_ReceiveHandler",
1122 CONFIG_IOTIVITY_RECEIVEHANDLER_PTHREAD_STACKSIZE);
1124 if (CA_STATUS_OK != res)
1126 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
1130 OIC_LOG(INFO, TAG, "CAReceiveHandler thread started successfully.");
1132 caglobals.ip.started = true;
1133 return CA_STATUS_OK;
1136 void CAIPStopServer()
1138 caglobals.ip.started = false;
1139 caglobals.ip.terminate = true;
1141 CADeInitializeIPGlobals();
1143 #if !defined(WSA_WAIT_EVENT_0)
1145 if (caglobals.ip.shutdownFds[1] != -1)
1147 close(caglobals.ip.shutdownFds[1]);
1148 // receive thread will stop immediately
1152 // receive thread will stop in SELECT_TIMEOUT seconds.
1156 // receive thread will stop immediately.
1157 if (!WSASetEvent(caglobals.ip.shutdownEvent))
1159 OIC_LOG_V(DEBUG, TAG, "set shutdown event failed: %#08X", GetLastError());
1163 OIC_LOG(INFO, TAG, "Adapter terminated successfully");
1166 static void applyMulticastToInterface4(uint32_t ifindex)
1168 if (!caglobals.ip.ipv4enabled)
1173 #if defined(USE_IP_MREQN)
1174 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1175 .imr_address.s_addr = htonl(INADDR_ANY),
1176 .imr_ifindex = ifindex };
1178 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1179 .imr_interface.s_addr = htonl(ifindex) };
1182 int ret = setsockopt(caglobals.ip.m4.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1183 if (OC_SOCKET_ERROR == ret)
1185 #if !defined(WSAEINVAL)
1186 if (EADDRINUSE != errno)
1188 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv4 Flavor)
1191 OIC_LOG_V(ERROR, TAG, " IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1194 ret = setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1195 if (OC_SOCKET_ERROR == ret)
1197 #if !defined(WSAEINVAL)
1198 if (EADDRINUSE != errno)
1200 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv4 Flavor)
1203 OIC_LOG_V(ERROR, TAG, "SECURE IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1208 static void applyMulticast6(int fd, struct in6_addr *addr, uint32_t ifindex)
1211 struct ipv6_mreq mreq = {.ipv6mr_multiaddr = {{{0}}},
1212 .ipv6mr_interface = ifindex };
1214 // VS2013 has problems with struct copies inside struct initializers, so copy separately.
1215 mreq.ipv6mr_multiaddr = *addr;
1217 int ret = setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, OPTVAL_T(&mreq), sizeof (mreq));
1218 if (OC_SOCKET_ERROR == ret)
1220 #if !defined(_WIN32)
1221 if (EADDRINUSE != errno)
1223 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv6 Flavor)
1226 OIC_LOG_V(ERROR, TAG, "IPv6 IPV6_JOIN_GROUP failed: %s", CAIPS_GET_ERROR);
1232 static void applyMulticastToInterface6(uint32_t ifindex)
1234 if (!caglobals.ip.ipv6enabled)
1238 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressInt, ifindex);
1239 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressLnk, ifindex);
1240 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressRlm, ifindex);
1241 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressAdm, ifindex);
1242 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressSit, ifindex);
1243 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressOrg, ifindex);
1244 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressGlb, ifindex);
1246 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressInt, ifindex);
1247 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressLnk, ifindex);
1248 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressRlm, ifindex);
1249 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressAdm, ifindex);
1250 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressSit, ifindex);
1251 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressOrg, ifindex);
1252 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressGlb, ifindex);
1255 CAResult_t CAIPStartListenServer()
1257 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1260 OIC_LOG_V(ERROR, TAG, "CAIPGetInterfaceInformation() failed: %s", strerror(errno));
1261 return CA_STATUS_FAILED;
1264 uint32_t len = u_arraylist_length(iflist);
1265 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1267 for (uint32_t i = 0; i < len; i++)
1269 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1275 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1279 if (ifitem->family == AF_INET)
1281 OIC_LOG_V(DEBUG, TAG, "Adding IPv4 interface(%d) to multicast group", ifitem->index);
1282 applyMulticastToInterface4(ifitem->index);
1284 if (ifitem->family == AF_INET6)
1286 OIC_LOG_V(DEBUG, TAG, "Adding IPv6 interface(%d) to multicast group", ifitem->index);
1287 applyMulticastToInterface6(ifitem->index);
1291 u_arraylist_destroy(iflist);
1292 return CA_STATUS_OK;
1295 CAResult_t CAIPStopListenServer()
1297 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1300 OIC_LOG_V(ERROR, TAG, "Get interface info failed: %s", strerror(errno));
1301 return CA_STATUS_FAILED;
1304 uint32_t len = u_arraylist_length(iflist);
1305 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1307 for (uint32_t i = 0; i < len; i++)
1309 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1315 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1319 if (ifitem->family == AF_INET)
1323 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s cloed", ifitem->name);
1325 if (ifitem->family == AF_INET6)
1329 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
1332 u_arraylist_destroy(iflist);
1333 return CA_STATUS_OK;
1336 void CAProcessNewInterface(CAInterface_t *ifitem)
1340 OIC_LOG(DEBUG, TAG, "ifitem is null");
1344 if (ifitem->family == AF_INET6)
1346 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv6 interface(%d) to multicast group", ifitem->index);
1347 applyMulticastToInterface6(ifitem->index);
1349 if (ifitem->family == AF_INET)
1351 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv4 interface(%d) to multicast group", ifitem->index);
1352 applyMulticastToInterface4(ifitem->index);
1356 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
1358 g_packetReceivedCallback = callback;
1361 static void sendData(int fd, const CAEndpoint_t *endpoint,
1362 const void *data, uint32_t dlen,
1363 const char *cast, const char *fam)
1365 OIC_LOG(DEBUG, TAG, "IN");
1369 OIC_LOG(DEBUG, TAG, "endpoint is null");
1370 if (g_ipErrorHandler)
1372 g_ipErrorHandler(endpoint, data, dlen, CA_STATUS_INVALID_PARAM);
1377 (void)cast; // eliminates release warning
1380 struct sockaddr_storage sock = { .ss_family = 0 };
1381 CAConvertNameToAddr(endpoint->addr, endpoint->port, &sock);
1383 socklen_t socklen = 0;
1384 if (sock.ss_family == AF_INET6)
1386 /** @todo figure out correct usage for ifindex, and sin6_scope_id */
1387 socklen = sizeof(struct sockaddr_in6);
1391 socklen = sizeof(struct sockaddr_in);
1395 const char *secure = (endpoint->flags & CA_SECURE) ? "secure " : "";
1397 #if !defined(_WIN32)
1398 ssize_t len = sendto(fd, data, dlen, 0, (struct sockaddr *)&sock, socklen);
1399 if (OC_SOCKET_ERROR == len)
1401 // If logging is not defined/enabled.
1402 if (g_ipErrorHandler)
1404 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1406 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %s", secure, cast, fam, strerror(errno));
1407 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1408 len, false, strerror(errno));
1412 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %zd bytes", secure, cast, fam, len);
1413 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1421 len = sendto(fd, ((char*)data) + sent, dlen - sent, 0, (struct sockaddr *)&sock, socklen);
1422 if (OC_SOCKET_ERROR == len)
1424 err = WSAGetLastError();
1425 if ((WSAEWOULDBLOCK != err) && (WSAENOBUFS != err))
1427 // If logging is not defined/enabled.
1428 if (g_ipErrorHandler)
1430 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1433 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %i", secure, cast, fam, err);
1441 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo (Partial Send) is successful: "
1442 "currently sent: %ld bytes, "
1443 "total sent: %ld bytes, "
1444 "remaining: %ld bytes",
1445 secure, cast, fam, len, sent, dlen-sent);
1449 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %ld bytes",
1450 secure, cast, fam, len);
1453 } while ((OC_SOCKET_ERROR == len) && ((WSAEWOULDBLOCK == err) || (WSAENOBUFS == err)) || (sent < dlen));
1457 static void sendMulticastData6(const u_arraylist_t *iflist,
1458 CAEndpoint_t *endpoint,
1459 const void *data, uint32_t datalen)
1463 OIC_LOG(DEBUG, TAG, "endpoint is null");
1467 int scope = endpoint->flags & CA_SCOPE_MASK;
1468 char *ipv6mcname = ipv6mcnames[scope];
1471 OIC_LOG_V(INFO, TAG, "IPv6 multicast scope invalid: %d", scope);
1474 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), ipv6mcname);
1475 int fd = caglobals.ip.u6.fd;
1477 uint32_t len = u_arraylist_length(iflist);
1478 for (uint32_t i = 0; i < len; i++)
1480 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1485 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1489 if (ifitem->family != AF_INET6)
1494 bool isMobile = false;
1495 for (uint32_t j = 0; j < MOBILE_INTERFACES; j++)
1497 if (strstr(ifitem->name, mobileinferfaces[j]))
1508 int index = ifitem->index;
1509 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, OPTVAL_T(&index), sizeof (index)))
1511 OIC_LOG_V(ERROR, TAG, "setsockopt6 failed: %s", CAIPS_GET_ERROR);
1516 // Set multicast packet TTL; default TTL is 1
1517 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &multicastTTL, sizeof(multicastTTL)))
1519 OIC_LOG_V(ERROR, TAG, "IPV6_MULTICAST_HOPS failed: %s", CAIPS_GET_ERROR);
1522 sendData(fd, endpoint, data, datalen, "multicast", "ipv6");
1526 static void sendMulticastData4(const u_arraylist_t *iflist,
1527 CAEndpoint_t *endpoint,
1528 const void *data, uint32_t datalen)
1530 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1532 #if defined(USE_IP_MREQN)
1533 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1534 .imr_address.s_addr = htonl(INADDR_ANY),
1537 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1538 .imr_interface = {0}};
1541 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), IPv4_MULTICAST);
1542 int fd = caglobals.ip.u4.fd;
1544 uint32_t len = u_arraylist_length(iflist);
1545 for (uint32_t i = 0; i < len; i++)
1547 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1552 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1556 if (ifitem->family != AF_INET)
1561 bool isMobile = false;
1562 for (uint32_t j = 0; j < MOBILE_INTERFACES; j++)
1564 if (strstr(ifitem->name, mobileinferfaces[j]))
1575 #if defined(USE_IP_MREQN)
1576 mreq.imr_ifindex = ifitem->index;
1578 mreq.imr_interface.s_addr = htonl(ifitem->index);
1580 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, OPTVAL_T(&mreq), sizeof (mreq)))
1582 OIC_LOG_V(ERROR, TAG, "send IP_MULTICAST_IF failed: %s (using defualt)",
1586 // Set multicast packet TTL; default TTL is 1
1587 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL, &multicastTTL, sizeof(multicastTTL)))
1589 OIC_LOG_V(ERROR, TAG, "IP_MULTICAST_TTL failed: %s", CAIPS_GET_ERROR);
1591 sendData(fd, endpoint, data, datalen, "multicast", "ipv4");
1595 void CAIPSendData(CAEndpoint_t *endpoint, const void *data, uint32_t datalen,
1598 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1599 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
1601 bool isSecure = (endpoint->flags & CA_SECURE) != 0;
1605 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1607 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1610 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1614 if ((endpoint->flags & CA_IPV6) && caglobals.ip.ipv6enabled)
1616 sendMulticastData6(iflist, endpoint, data, datalen);
1618 if ((endpoint->flags & CA_IPV4) && caglobals.ip.ipv4enabled)
1620 sendMulticastData4(iflist, endpoint, data, datalen);
1623 u_arraylist_destroy(iflist);
1627 if (!endpoint->port) // unicast discovery
1629 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1633 if (caglobals.ip.ipv6enabled && (endpoint->flags & CA_IPV6))
1635 fd = isSecure ? caglobals.ip.u6s.fd : caglobals.ip.u6.fd;
1636 #ifndef __WITH_DTLS__
1637 fd = caglobals.ip.u6.fd;
1639 sendData(fd, endpoint, data, datalen, "unicast", "ipv6");
1641 if (caglobals.ip.ipv4enabled && (endpoint->flags & CA_IPV4))
1643 fd = isSecure ? caglobals.ip.u4s.fd : caglobals.ip.u4.fd;
1644 #ifndef __WITH_DTLS__
1645 fd = caglobals.ip.u4.fd;
1647 sendData(fd, endpoint, data, datalen, "unicast", "ipv4");
1652 CAResult_t CAGetIPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
1654 VERIFY_NON_NULL(info, TAG, "info is NULL");
1655 VERIFY_NON_NULL(size, TAG, "size is NULL");
1657 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1660 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1661 return CA_STATUS_FAILED;
1664 uint32_t len = u_arraylist_length(iflist);
1665 uint32_t length = len;
1667 #ifdef __WITH_DTLS__
1668 //If DTLS is supported, each interface can support secure port as well
1672 CAEndpoint_t *eps = (CAEndpoint_t *)OICCalloc(length, sizeof (CAEndpoint_t));
1675 OIC_LOG(ERROR, TAG, "Malloc Failed");
1676 u_arraylist_destroy(iflist);
1677 return CA_MEMORY_ALLOC_FAILED;
1680 for (uint32_t i = 0, j = 0; i < len; i++)
1682 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1688 eps[j].adapter = CA_ADAPTER_IP;
1691 if (ifitem->family == AF_INET6)
1693 eps[j].flags = CA_IPV6;
1694 eps[j].port = caglobals.ip.u6.port;
1698 eps[j].flags = CA_IPV4;
1699 eps[j].port = caglobals.ip.u4.port;
1701 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1703 #ifdef __WITH_DTLS__
1706 eps[j].adapter = CA_ADAPTER_IP;
1709 if (ifitem->family == AF_INET6)
1711 eps[j].flags = CA_IPV6 | CA_SECURE;
1712 eps[j].port = caglobals.ip.u6s.port;
1716 eps[j].flags = CA_IPV4 | CA_SECURE;
1717 eps[j].port = caglobals.ip.u4s.port;
1719 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1727 u_arraylist_destroy(iflist);
1729 return CA_STATUS_OK;
1732 void CAIPSetErrorHandler(CAIPErrorHandleCallback errorHandleCallback)
1734 g_ipErrorHandler = errorHandleCallback;
1737 CAResult_t CAIPSetMulticastTTL(size_t ttl)
1740 return CA_STATUS_OK;
1743 CAResult_t CAIPGetMulticastTTL(size_t *ttl)
1745 VERIFY_NON_NULL(ttl, TAG, "ttl is NULL");
1747 *ttl = multicastTTL;
1748 return CA_STATUS_OK;