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
28 #include "iotivity_config.h"
29 #include "iotivity_debug.h"
31 #include <sys/types.h>
32 #ifdef HAVE_SYS_SOCKET_H
33 #include <sys/socket.h>
35 #ifdef HAVE_WINSOCK2_H
38 #ifdef HAVE_WS2TCPIP_H
46 #ifdef HAVE_SYS_SELECT_H
47 #include <sys/select.h>
49 #ifdef HAVE_ARPA_INET_H
50 #include <arpa/inet.h>
52 #ifdef HAVE_NETINET_IN_H
53 #include <netinet/in.h>
60 #include <linux/netlink.h>
61 #include <linux/rtnetlink.h>
65 #include "caipinterface.h"
66 #include "caipnwmonitor.h"
67 #include "caadapterutils.h"
68 #if defined(__WITH_DTLS__) || defined(__WITH_TLS__)
69 #include "ca_adapter_net_ssl.h"
72 #include "oic_malloc.h"
73 #include "oic_string.h"
81 * Logging tag for module name
83 #define TAG "OIC_CA_IP_SERVER"
85 #define SELECT_TIMEOUT 1 // select() seconds (and termination latency)
87 #define IPv4_MULTICAST "224.0.1.187"
88 static struct in_addr IPv4MulticastAddress = { 0 };
90 #define IPv6_DOMAINS 16
91 #define IPv6_MULTICAST_INT "ff01::158"
92 static struct in6_addr IPv6MulticastAddressInt;
93 #define IPv6_MULTICAST_LNK "ff02::158"
94 static struct in6_addr IPv6MulticastAddressLnk;
95 #define IPv6_MULTICAST_RLM "ff03::158"
96 static struct in6_addr IPv6MulticastAddressRlm;
97 #define IPv6_MULTICAST_ADM "ff04::158"
98 static struct in6_addr IPv6MulticastAddressAdm;
99 #define IPv6_MULTICAST_SIT "ff05::158"
100 static struct in6_addr IPv6MulticastAddressSit;
101 #define IPv6_MULTICAST_ORG "ff08::158"
102 static struct in6_addr IPv6MulticastAddressOrg;
103 #define IPv6_MULTICAST_GLB "ff0e::158"
104 static struct in6_addr IPv6MulticastAddressGlb;
106 static char *ipv6mcnames[IPv6_DOMAINS] = {
126 #define IFF_UP_RUNNING_FLAGS (IFF_UP)
128 char* caips_get_error(){
129 static char buffer[32];
130 snprintf(buffer, 32, "%i", WSAGetLastError());
133 #define CAIPS_GET_ERROR \
136 #define IFF_UP_RUNNING_FLAGS (IFF_UP|IFF_RUNNING)
138 #define CAIPS_GET_ERROR \
141 static CAIPErrorHandleCallback g_ipErrorHandler = NULL;
143 static CAIPPacketReceivedCallback g_packetReceivedCallback = NULL;
145 static void CAFindReadyMessage();
146 #if !defined(WSA_WAIT_EVENT_0)
147 static void CASelectReturned(fd_set *readFds, int ret);
149 static void CAEventReturned(CASocketFd_t socket);
152 static CAResult_t CAReceiveMessage(CASocketFd_t fd, CATransportFlags_t flags);
154 static void CAReceiveHandler(void *data)
158 while (!caglobals.ip.terminate)
160 CAFindReadyMessage();
164 #define CLOSE_SOCKET(TYPE) \
165 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
167 OC_CLOSE_SOCKET(caglobals.ip.TYPE.fd); \
168 caglobals.ip.TYPE.fd = OC_INVALID_SOCKET; \
171 #if !defined(WSA_WAIT_EVENT_0)
173 #define SET(TYPE, FDS) \
174 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) \
176 FD_SET(caglobals.ip.TYPE.fd, FDS); \
179 #define ISSET(TYPE, FDS, FLAGS) \
180 if (caglobals.ip.TYPE.fd != OC_INVALID_SOCKET && FD_ISSET(caglobals.ip.TYPE.fd, FDS)) \
182 fd = caglobals.ip.TYPE.fd; \
187 static void CAFindReadyMessage()
190 struct timeval timeout;
192 timeout.tv_sec = caglobals.ip.selectTimeout;
194 struct timeval *tv = caglobals.ip.selectTimeout == -1 ? NULL : &timeout;
206 if (caglobals.ip.shutdownFds[0] != -1)
208 FD_SET(caglobals.ip.shutdownFds[0], &readFds);
210 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
212 FD_SET(caglobals.ip.netlinkFd, &readFds);
215 int ret = select(caglobals.ip.maxfd + 1, &readFds, NULL, NULL, tv);
217 if (caglobals.ip.terminate)
219 OIC_LOG_V(DEBUG, TAG, "Packet receiver Stop request received.");
229 CASelectReturned(&readFds, ret);
233 OIC_LOG_V(FATAL, TAG, "select error %s", CAIPS_GET_ERROR);
238 static void CASelectReturned(fd_set *readFds, int ret)
241 CASocketFd_t fd = OC_INVALID_SOCKET;
242 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
244 while (!caglobals.ip.terminate)
246 ISSET(u6, readFds, CA_IPV6)
247 else ISSET(u6s, readFds, CA_IPV6 | CA_SECURE)
248 else ISSET(u4, readFds, CA_IPV4)
249 else ISSET(u4s, readFds, CA_IPV4 | CA_SECURE)
250 else ISSET(m6, readFds, CA_MULTICAST | CA_IPV6)
251 else ISSET(m6s, readFds, CA_MULTICAST | CA_IPV6 | CA_SECURE)
252 else ISSET(m4, readFds, CA_MULTICAST | CA_IPV4)
253 else ISSET(m4s, readFds, CA_MULTICAST | CA_IPV4 | CA_SECURE)
254 else if ((caglobals.ip.netlinkFd != OC_INVALID_SOCKET) && FD_ISSET(caglobals.ip.netlinkFd, readFds))
256 OIC_LOG_V(DEBUG, TAG, "Netlink event detacted");
257 u_arraylist_t *iflist = CAFindInterfaceChange();
260 size_t listLength = u_arraylist_length(iflist);
261 for (size_t i = 0; i < listLength; i++)
263 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
266 CAProcessNewInterface(ifitem);
269 u_arraylist_destroy(iflist);
273 else if (FD_ISSET(caglobals.ip.shutdownFds[0], readFds))
276 ssize_t len = read(caglobals.ip.shutdownFds[0], buf, sizeof (buf));
287 (void)CAReceiveMessage(fd, flags);
292 #else // if defined(WSA_WAIT_EVENT_0)
294 #define PUSH_HANDLE(HANDLE, ARRAY, INDEX) \
296 ARRAY[INDEX] = HANDLE; \
300 // Create WSAEvent for SOCKET and push the new event into ARRAY
301 #define PUSH_SOCKET(SOCKET, ARRAY, INDEX) \
302 if (SOCKET != OC_INVALID_SOCKET) \
304 WSAEVENT NewEvent = WSACreateEvent(); \
305 if (WSA_INVALID_EVENT != NewEvent) \
307 if (0 != WSAEventSelect(SOCKET, NewEvent, FD_READ)) \
309 OIC_LOG_V(ERROR, TAG, "WSAEventSelect failed %d", WSAGetLastError()); \
310 BOOL closed = WSACloseEvent(NewEvent); \
314 OIC_LOG_V(ERROR, TAG, "WSACloseEvent(NewEvent) failed %d", WSAGetLastError()); \
319 PUSH_HANDLE(NewEvent, ARRAY, INDEX); \
324 OIC_LOG_V(ERROR, TAG, "WSACreateEvent failed %d", WSAGetLastError()); \
328 #define INSERT_SOCKET(FD, ARRAY, INDEX) \
330 if (OC_INVALID_SOCKET != FD) \
337 // Inserts the socket into the SOCKET_ARRAY and pushes the socket event into EVENT_ARRAY
338 #define PUSH_IP_SOCKET(TYPE, EVENT_ARRAY, SOCKET_ARRAY, INDEX) \
340 if (OC_INVALID_SOCKET != caglobals.ip.TYPE.fd) \
342 INSERT_SOCKET(caglobals.ip.TYPE.fd, SOCKET_ARRAY, INDEX); \
343 PUSH_SOCKET(caglobals.ip.TYPE.fd, EVENT_ARRAY, INDEX); \
347 #define IS_MATCHING_IP_SOCKET(TYPE, SOCKET, FLAGS) \
348 if ((caglobals.ip.TYPE.fd != OC_INVALID_SOCKET) && (caglobals.ip.TYPE.fd == SOCKET)) \
350 fd = caglobals.ip.TYPE.fd; \
354 #define EVENT_ARRAY_SIZE 10
356 static void CAFindReadyMessage()
358 CASocketFd_t socketArray[EVENT_ARRAY_SIZE];
359 HANDLE eventArray[EVENT_ARRAY_SIZE];
363 // socketArray and eventArray should have same number of elements
364 OC_STATIC_ASSERT(_countof(socketArray) == _countof(eventArray), "Arrays should have same number of elements");
365 OC_STATIC_ASSERT(_countof(eventArray) <= WSA_MAXIMUM_WAIT_EVENTS, "Too many events for a single Wait");
367 PUSH_IP_SOCKET(u6, eventArray, socketArray, arraySize);
368 PUSH_IP_SOCKET(u6s, eventArray, socketArray, arraySize);
369 PUSH_IP_SOCKET(u4, eventArray, socketArray, arraySize);
370 PUSH_IP_SOCKET(u4s, eventArray, socketArray, arraySize);
371 PUSH_IP_SOCKET(m6, eventArray, socketArray, arraySize);
372 PUSH_IP_SOCKET(m6s, eventArray, socketArray, arraySize);
373 PUSH_IP_SOCKET(m4, eventArray, socketArray, arraySize);
374 PUSH_IP_SOCKET(m4s, eventArray, socketArray, arraySize);
376 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
378 INSERT_SOCKET(OC_INVALID_SOCKET, socketArray, arraySize);
379 PUSH_HANDLE(caglobals.ip.shutdownEvent, eventArray, arraySize);
382 if (WSA_INVALID_EVENT != caglobals.ip.addressChangeEvent)
384 INSERT_SOCKET(OC_INVALID_SOCKET, socketArray, arraySize);
385 PUSH_HANDLE(caglobals.ip.addressChangeEvent, eventArray, arraySize);
388 // Should not have overflowed buffer
389 assert(arraySize <= (_countof(socketArray)));
391 // Timeout is unnecessary on Windows
392 assert(-1 == caglobals.ip.selectTimeout);
394 while (!caglobals.ip.terminate)
396 DWORD ret = WSAWaitForMultipleEvents(arraySize, eventArray, FALSE, WSA_INFINITE, FALSE);
397 assert(ret >= WSA_WAIT_EVENT_0);
398 assert(ret < (WSA_WAIT_EVENT_0 + arraySize));
402 case WSA_WAIT_FAILED:
403 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_FAILED %d", WSAGetLastError());
405 case WSA_WAIT_IO_COMPLETION:
406 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_IO_COMPLETION %d", WSAGetLastError());
408 case WSA_WAIT_TIMEOUT:
409 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents returned WSA_WAIT_TIMEOUT %d", WSAGetLastError());
412 eventIndex = ret - WSA_WAIT_EVENT_0;
413 if ((eventIndex >= 0) && (eventIndex < arraySize))
415 if (false == WSAResetEvent(eventArray[eventIndex]))
417 OIC_LOG_V(ERROR, TAG, "WSAResetEvent failed %d", WSAGetLastError());
420 // Handle address changes if addressChangeEvent is triggered.
421 if ((caglobals.ip.addressChangeEvent != WSA_INVALID_EVENT) &&
422 (caglobals.ip.addressChangeEvent == eventArray[eventIndex]))
424 u_arraylist_t *iflist = CAFindInterfaceChange();
427 size_t listLength = u_arraylist_length(iflist);
428 for (size_t i = 0; i < listLength; i++)
430 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
433 CAProcessNewInterface(ifitem);
436 u_arraylist_destroy(iflist);
441 // Break out if shutdownEvent is triggered.
442 if ((caglobals.ip.shutdownEvent != WSA_INVALID_EVENT) &&
443 (caglobals.ip.shutdownEvent == eventArray[eventIndex]))
447 CAEventReturned(socketArray[eventIndex]);
451 OIC_LOG_V(ERROR, TAG, "WSAWaitForMultipleEvents failed %d", WSAGetLastError());
458 for (size_t i = 0; i < arraySize; i++)
460 HANDLE h = eventArray[i];
461 if (h != caglobals.ip.addressChangeEvent)
463 BOOL closed = WSACloseEvent(h);
467 OIC_LOG_V(ERROR, TAG, "WSACloseEvent (Index %i) failed %d", i, WSAGetLastError());
472 if (caglobals.ip.terminate)
474 caglobals.ip.shutdownEvent = WSA_INVALID_EVENT;
479 static void CAEventReturned(CASocketFd_t socket)
481 CASocketFd_t fd = OC_INVALID_SOCKET;
482 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
484 while (!caglobals.ip.terminate)
486 IS_MATCHING_IP_SOCKET(u6, socket, CA_IPV6)
487 else IS_MATCHING_IP_SOCKET(u6s, socket, CA_IPV6 | CA_SECURE)
488 else IS_MATCHING_IP_SOCKET(u4, socket, CA_IPV4)
489 else IS_MATCHING_IP_SOCKET(u4s, socket, CA_IPV4 | CA_SECURE)
490 else IS_MATCHING_IP_SOCKET(m6, socket, CA_MULTICAST | CA_IPV6)
491 else IS_MATCHING_IP_SOCKET(m6s, socket, CA_MULTICAST | CA_IPV6 | CA_SECURE)
492 else IS_MATCHING_IP_SOCKET(m4, socket, CA_MULTICAST | CA_IPV4)
493 else IS_MATCHING_IP_SOCKET(m4s, socket, CA_MULTICAST | CA_IPV4 | CA_SECURE)
498 (void)CAReceiveMessage(socket, flags);
499 // We will never get more than one match per socket, so always break.
506 void CAUnregisterForAddressChanges()
509 if (caglobals.ip.addressChangeEvent != WSA_INVALID_EVENT)
511 OC_VERIFY(WSACloseEvent(caglobals.ip.addressChangeEvent));
512 caglobals.ip.addressChangeEvent = WSA_INVALID_EVENT;
515 if (caglobals.ip.netlinkFd != OC_INVALID_SOCKET)
517 close(caglobals.ip.netlinkFd);
518 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
523 void CADeInitializeIPGlobals()
534 CAUnregisterForAddressChanges();
537 static CAResult_t CAReceiveMessage(CASocketFd_t fd, CATransportFlags_t flags)
539 char recvBuffer[COAP_MAX_PDU_SIZE] = {0};
543 struct sockaddr_storage srcAddr = { .ss_family = 0 };
544 unsigned char *pktinfo = NULL;
545 #if !defined(WSA_CMSG_DATA)
547 struct cmsghdr *cmp = NULL;
548 struct iovec iov = { .iov_base = recvBuffer, .iov_len = sizeof (recvBuffer) };
552 unsigned char data[CMSG_SPACE(sizeof (struct in6_pktinfo))];
557 namelen = sizeof (struct sockaddr_in6);
558 level = IPPROTO_IPV6;
560 len = sizeof (struct in6_pktinfo);
564 namelen = sizeof (struct sockaddr_in);
567 len = sizeof (struct in6_pktinfo);
570 struct msghdr msg = { .msg_name = &srcAddr,
571 .msg_namelen = namelen,
574 .msg_control = &cmsg,
575 .msg_controllen = CMSG_SPACE(len) };
577 ssize_t recvLen = recvmsg(fd, &msg, flags);
578 if (OC_SOCKET_ERROR == recvLen)
580 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
581 return CA_STATUS_FAILED;
584 for (cmp = CMSG_FIRSTHDR(&msg); cmp != NULL; cmp = CMSG_NXTHDR(&msg, cmp))
586 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
588 pktinfo = CMSG_DATA(cmp);
591 #else // if defined(WSA_CMSG_DATA)
595 uint8_t data[WSA_CMSG_SPACE(sizeof (IN6_PKTINFO))];
597 memset(&cmsg, 0, sizeof(cmsg));
601 namelen = sizeof (struct sockaddr_in6);
602 level = IPPROTO_IPV6;
607 namelen = sizeof (struct sockaddr_in);
612 WSABUF iov = {.len = sizeof (recvBuffer), .buf = recvBuffer};
613 WSAMSG msg = {.name = (PSOCKADDR)&srcAddr,
617 .Control = {.buf = (char*)cmsg.data, .len = sizeof (cmsg)}
620 uint32_t recvLen = 0;
621 uint32_t ret = caglobals.ip.wsaRecvMsg(fd, &msg, (LPDWORD)&recvLen, 0,0);
622 if (OC_SOCKET_ERROR == ret)
624 OIC_LOG_V(ERROR, TAG, "WSARecvMsg failed %i", WSAGetLastError());
625 return CA_STATUS_FAILED;
628 OIC_LOG_V(DEBUG, TAG, "WSARecvMsg recvd %u bytes", recvLen);
630 for (WSACMSGHDR *cmp = WSA_CMSG_FIRSTHDR(&msg); cmp != NULL;
631 cmp = WSA_CMSG_NXTHDR(&msg, cmp))
633 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
635 pktinfo = WSA_CMSG_DATA(cmp);
638 #endif // !defined(WSA_CMSG_DATA)
641 OIC_LOG(ERROR, TAG, "pktinfo is null");
642 return CA_STATUS_FAILED;
645 CASecureEndpoint_t sep = {.endpoint = {.adapter = CA_ADAPTER_IP, .flags = flags}};
649 sep.endpoint.ifindex = ((struct in6_pktinfo *)pktinfo)->ipi6_ifindex;
651 if (flags & CA_MULTICAST)
653 struct in6_addr *addr = &(((struct in6_pktinfo *)pktinfo)->ipi6_addr);
654 unsigned char topbits = ((unsigned char *)addr)[0];
657 sep.endpoint.flags &= ~CA_MULTICAST;
663 sep.endpoint.ifindex = ((struct in_pktinfo *)pktinfo)->ipi_ifindex;
665 if (flags & CA_MULTICAST)
667 struct in_addr *addr = &((struct in_pktinfo *)pktinfo)->ipi_addr;
668 uint32_t host = ntohl(addr->s_addr);
669 unsigned char topbits = ((unsigned char *)&host)[3];
670 if (topbits < 224 || topbits > 239)
672 sep.endpoint.flags &= ~CA_MULTICAST;
677 CAConvertAddrToName(&srcAddr, namelen, sep.endpoint.addr, &sep.endpoint.port);
679 if (flags & CA_SECURE)
685 CAdecryptSsl(&sep, (uint8_t *)recvBuffer, recvLen);
686 OIC_LOG_V(DEBUG, TAG, "CAdecryptSsl returns [%d]", decryptResult);
688 OIC_LOG(ERROR, TAG, "Encrypted message but no DTLS");
689 #endif // __WITH_DTLS__
693 if (g_packetReceivedCallback)
695 g_packetReceivedCallback(&sep, recvBuffer, recvLen);
704 OIC_LOG_V(DEBUG, TAG, "IN %s", __func__);
705 OIC_LOG_V(DEBUG, TAG, "OUT %s", __func__);
708 static CASocketFd_t CACreateSocket(int family, uint16_t *port, bool isMulticast)
710 int socktype = SOCK_DGRAM;
712 socktype |= SOCK_CLOEXEC;
714 CASocketFd_t fd = socket(family, socktype, IPPROTO_UDP);
715 if (OC_INVALID_SOCKET == fd)
717 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", CAIPS_GET_ERROR);
718 return OC_INVALID_SOCKET;
721 #if !defined(SOCK_CLOEXEC) && defined(FD_CLOEXEC)
722 int fl = fcntl(fd, F_GETFD);
723 if (-1 == fl || -1 == fcntl(fd, F_SETFD, fl|FD_CLOEXEC))
725 OIC_LOG_V(ERROR, TAG, "set FD_CLOEXEC failed: %s", strerror(errno));
727 return OC_INVALID_SOCKET;
730 struct sockaddr_storage sa = { .ss_family = (short)family };
731 socklen_t socklen = 0;
733 if (family == AF_INET6)
737 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, OPTVAL_T(&on), sizeof (on)))
739 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", CAIPS_GET_ERROR);
742 #if defined(IPV6_RECVPKTINFO)
743 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof (on)))
745 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, OPTVAL_T(&on), sizeof (on)))
748 OIC_LOG_V(ERROR, TAG, "IPV6_RECVPKTINFO failed: %s",CAIPS_GET_ERROR);
751 ((struct sockaddr_in6 *)&sa)->sin6_port = htons(*port);
752 socklen = sizeof (struct sockaddr_in6);
757 if (OC_SOCKET_ERROR == setsockopt(fd, IPPROTO_IP, IP_PKTINFO, OPTVAL_T(&on), sizeof (on)))
759 OIC_LOG_V(ERROR, TAG, "IP_PKTINFO failed: %s", CAIPS_GET_ERROR);
762 ((struct sockaddr_in *)&sa)->sin_port = htons(*port);
763 socklen = sizeof (struct sockaddr_in);
766 if (isMulticast && *port) // use the given port
769 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, OPTVAL_T(&on), sizeof (on)))
771 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", CAIPS_GET_ERROR);
773 return OC_INVALID_SOCKET;
777 if (OC_SOCKET_ERROR == bind(fd, (struct sockaddr *)&sa, socklen))
779 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", CAIPS_GET_ERROR);
781 return OC_INVALID_SOCKET;
784 if (!*port) // return the assigned port
786 if (OC_SOCKET_ERROR == getsockname(fd, (struct sockaddr *)&sa, &socklen))
788 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", CAIPS_GET_ERROR);
790 return OC_INVALID_SOCKET;
792 *port = ntohs(family == AF_INET6 ?
793 ((struct sockaddr_in6 *)&sa)->sin6_port :
794 ((struct sockaddr_in *)&sa)->sin_port);
803 #define CHECKFD(FD) \
806 if (FD > caglobals.ip.maxfd) \
808 caglobals.ip.maxfd = FD; \
812 #define NEWSOCKET(FAMILY, NAME, MULTICAST) \
815 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
816 if (caglobals.ip.NAME.fd == OC_INVALID_SOCKET) \
818 caglobals.ip.NAME.port = 0; \
819 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
821 CHECKFD(caglobals.ip.NAME.fd); \
824 static void CARegisterForAddressChanges()
826 OIC_LOG_V(DEBUG, TAG, "IN %s", __func__);
828 caglobals.ip.addressChangeEvent = WSACreateEvent();
829 if (WSA_INVALID_EVENT == caglobals.ip.addressChangeEvent)
831 OIC_LOG(ERROR, TAG, "WSACreateEvent failed");
834 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
836 // create NETLINK fd for interface change notifications
837 struct sockaddr_nl sa = { AF_NETLINK, 0, 0,
838 RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR };
840 caglobals.ip.netlinkFd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE);
841 if (caglobals.ip.netlinkFd == OC_INVALID_SOCKET)
843 OIC_LOG_V(ERROR, TAG, "netlink socket failed: %s", strerror(errno));
847 int r = bind(caglobals.ip.netlinkFd, (struct sockaddr *)&sa, sizeof (sa));
850 OIC_LOG_V(ERROR, TAG, "netlink bind failed: %s", strerror(errno));
851 close(caglobals.ip.netlinkFd);
852 caglobals.ip.netlinkFd = OC_INVALID_SOCKET;
856 CHECKFD(caglobals.ip.netlinkFd);
861 OIC_LOG_V(DEBUG, TAG, "OUT %s", __func__);
864 static void CAInitializeFastShutdownMechanism()
866 OIC_LOG_V(DEBUG, TAG, "IN %s", __func__);
867 caglobals.ip.selectTimeout = -1; // don't poll for shutdown
869 #if defined(WSA_WAIT_EVENT_0)
870 caglobals.ip.shutdownEvent = WSACreateEvent();
871 if (WSA_INVALID_EVENT != caglobals.ip.shutdownEvent)
875 #elif defined(HAVE_PIPE2)
876 ret = pipe2(caglobals.ip.shutdownFds, O_CLOEXEC);
877 CHECKFD(caglobals.ip.shutdownFds[0]);
878 CHECKFD(caglobals.ip.shutdownFds[1]);
880 ret = pipe(caglobals.ip.shutdownFds);
883 ret = fcntl(caglobals.ip.shutdownFds[0], F_GETFD);
886 ret = fcntl(caglobals.ip.shutdownFds[0], F_SETFD, ret|FD_CLOEXEC);
890 ret = fcntl(caglobals.ip.shutdownFds[1], F_GETFD);
894 ret = fcntl(caglobals.ip.shutdownFds[1], F_SETFD, ret|FD_CLOEXEC);
898 close(caglobals.ip.shutdownFds[1]);
899 close(caglobals.ip.shutdownFds[0]);
900 caglobals.ip.shutdownFds[0] = -1;
901 caglobals.ip.shutdownFds[1] = -1;
904 CHECKFD(caglobals.ip.shutdownFds[0]);
905 CHECKFD(caglobals.ip.shutdownFds[1]);
909 OIC_LOG_V(ERROR, TAG, "fast shutdown mechanism init failed: %s", CAIPS_GET_ERROR);
910 caglobals.ip.selectTimeout = SELECT_TIMEOUT; //poll needed for shutdown
912 OIC_LOG_V(DEBUG, TAG, "OUT %s", __func__);
915 CAResult_t CAIPStartServer(const ca_thread_pool_t threadPool)
917 CAResult_t res = CA_STATUS_OK;
919 if (caglobals.ip.started)
924 WORD wVersionRequested = MAKEWORD(2, 2);
925 WSADATA wsaData ={.wVersion = 0};
926 int err = WSAStartup(wVersionRequested, &wsaData);
929 OIC_LOG_V(ERROR, TAG, "WSAStartup failed: %i", err);
930 return CA_STATUS_FAILED;
932 OIC_LOG(DEBUG, TAG, "WSAStartup Succeeded");
934 if (!IPv4MulticastAddress.s_addr)
936 (void)inet_pton(AF_INET, IPv4_MULTICAST, &IPv4MulticastAddress);
937 (void)inet_pton(AF_INET6, IPv6_MULTICAST_INT, &IPv6MulticastAddressInt);
938 (void)inet_pton(AF_INET6, IPv6_MULTICAST_LNK, &IPv6MulticastAddressLnk);
939 (void)inet_pton(AF_INET6, IPv6_MULTICAST_RLM, &IPv6MulticastAddressRlm);
940 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ADM, &IPv6MulticastAddressAdm);
941 (void)inet_pton(AF_INET6, IPv6_MULTICAST_SIT, &IPv6MulticastAddressSit);
942 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ORG, &IPv6MulticastAddressOrg);
943 (void)inet_pton(AF_INET6, IPv6_MULTICAST_GLB, &IPv6MulticastAddressGlb);
946 if (!caglobals.ip.ipv6enabled && !caglobals.ip.ipv4enabled)
948 caglobals.ip.ipv4enabled = true; // only needed to run CA tests
951 if (caglobals.ip.ipv6enabled)
953 NEWSOCKET(AF_INET6, u6, false);
954 NEWSOCKET(AF_INET6, u6s, false);
955 NEWSOCKET(AF_INET6, m6, true);
956 NEWSOCKET(AF_INET6, m6s, true);
957 OIC_LOG_V(INFO, TAG, "IPv6 unicast port: %u", caglobals.ip.u6.port);
959 if (caglobals.ip.ipv4enabled)
961 NEWSOCKET(AF_INET, u4, false);
962 NEWSOCKET(AF_INET, u4s, false);
963 NEWSOCKET(AF_INET, m4, true);
964 NEWSOCKET(AF_INET, m4s, true);
965 OIC_LOG_V(INFO, TAG, "IPv4 unicast port: %u", caglobals.ip.u4.port);
968 OIC_LOG_V(DEBUG, TAG,
969 "socket summary: u6=%d, u6s=%d, u4=%d, u4s=%d, m6=%d, m6s=%d, m4=%d, m4s=%d",
970 caglobals.ip.u6.fd, caglobals.ip.u6s.fd, caglobals.ip.u4.fd, caglobals.ip.u4s.fd,
971 caglobals.ip.m6.fd, caglobals.ip.m6s.fd, caglobals.ip.m4.fd, caglobals.ip.m4s.fd);
973 OIC_LOG_V(DEBUG, TAG,
974 "port summary: u6 port=%d, u6s port=%d, u4 port=%d, u4s port=%d, m6 port=%d,"
975 "m6s port=%d, m4 port=%d, m4s port=%d",
976 caglobals.ip.u6.port, caglobals.ip.u6s.port, caglobals.ip.u4.port,
977 caglobals.ip.u4s.port, caglobals.ip.m6.port, caglobals.ip.m6s.port,
978 caglobals.ip.m4.port, caglobals.ip.m4s.port);
979 #if defined (SIO_GET_EXTENSION_FUNCTION_POINTER)
980 caglobals.ip.wsaRecvMsg = NULL;
981 GUID GuidWSARecvMsg = WSAID_WSARECVMSG;
983 err = WSAIoctl(caglobals.ip.u4.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &GuidWSARecvMsg, sizeof(GuidWSARecvMsg), &(caglobals.ip.wsaRecvMsg), sizeof(caglobals.ip.wsaRecvMsg), &copied, 0, 0);
986 OIC_LOG_V(ERROR, TAG, "WSAIoctl failed %i", WSAGetLastError());
987 return CA_STATUS_FAILED;
990 // set up appropriate FD mechanism for fast shutdown
991 CAInitializeFastShutdownMechanism();
993 // create source of network address change notifications
994 CARegisterForAddressChanges();
996 caglobals.ip.selectTimeout = CAGetPollingInterval(caglobals.ip.selectTimeout);
998 res = CAIPStartListenServer();
999 if (CA_STATUS_OK != res)
1001 OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", res);
1005 caglobals.ip.terminate = false;
1006 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL);
1007 if (CA_STATUS_OK != res)
1009 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
1012 OIC_LOG(DEBUG, TAG, "CAReceiveHandler thread started successfully.");
1014 caglobals.ip.started = true;
1015 return CA_STATUS_OK;
1018 void CAIPStopServer()
1020 caglobals.ip.started = false;
1021 caglobals.ip.terminate = true;
1023 #if !defined(WSA_WAIT_EVENT_0)
1024 if (caglobals.ip.shutdownFds[1] != -1)
1026 close(caglobals.ip.shutdownFds[1]);
1027 // receive thread will stop immediately
1031 // receive thread will stop in SELECT_TIMEOUT seconds.
1034 // receive thread will stop immediately.
1035 if (!WSASetEvent(caglobals.ip.shutdownEvent))
1037 OIC_LOG_V(DEBUG, TAG, "set shutdown event failed: %d", WSAGetLastError());
1042 void CAWakeUpForChange()
1044 #if !defined(WSA_WAIT_EVENT_0)
1045 if (caglobals.ip.shutdownFds[1] != -1)
1050 len = write(caglobals.ip.shutdownFds[1], "w", 1);
1051 } while ((len == -1) && (errno == EINTR));
1052 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
1054 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
1058 if (!WSASetEvent(caglobals.ip.shutdownEvent))
1060 OIC_LOG_V(DEBUG, TAG, "set shutdown event failed: %d", WSAGetLastError());
1065 static void applyMulticastToInterface4(uint32_t ifindex)
1067 if (!caglobals.ip.ipv4enabled)
1072 #if defined(USE_IP_MREQN)
1073 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1074 .imr_address.s_addr = htonl(INADDR_ANY),
1075 .imr_ifindex = ifindex };
1077 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1078 .imr_interface.s_addr = htonl(ifindex) };
1081 int ret = setsockopt(caglobals.ip.m4.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1082 if (OC_SOCKET_ERROR == ret)
1084 #if !defined(WSAEINVAL)
1085 if (EADDRINUSE != errno)
1087 if (WSAEINVAL != WSAGetLastError()) // Joining multicast group more than once (IPv4 Flavor)
1090 OIC_LOG_V(ERROR, TAG, " IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1093 ret = setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq), sizeof (mreq));
1094 if (OC_SOCKET_ERROR == ret)
1096 #if !defined(WSAEINVAL)
1097 if (EADDRINUSE != errno)
1099 if (WSAEINVAL == WSAGetLastError())
1101 // We're trying to join the multicast group again.
1102 // If the interface has gone down and come back up, the socket might be in
1103 // an inconsistent state where it still thinks we're joined when the interface
1104 // doesn't think we're joined. So try to leave and rejoin the group just in case.
1105 setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, OPTVAL_T(&mreq),
1107 ret = setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, OPTVAL_T(&mreq),
1110 if (OC_SOCKET_ERROR == ret)
1113 OIC_LOG_V(ERROR, TAG, "SECURE IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
1118 static void applyMulticast6(CASocketFd_t fd, struct in6_addr *addr, uint32_t ifindex)
1120 struct ipv6_mreq mreq = { .ipv6mr_interface = ifindex };
1122 // VS2013 has problems with struct copies inside struct initializers, so copy separately.
1123 mreq.ipv6mr_multiaddr = *addr;
1125 int ret = setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, OPTVAL_T(&mreq), sizeof (mreq));
1126 if (OC_SOCKET_ERROR == ret)
1128 #if !defined(_WIN32)
1129 if (EADDRINUSE != errno)
1131 if (WSAEINVAL == WSAGetLastError())
1133 // We're trying to join the multicast group again.
1134 // If the interface has gone down and come back up, the socket might be in
1135 // an inconsistent state where it still thinks we're joined when the interface
1136 // doesn't think we're joined. So try to leave and rejoin the group just in case.
1137 setsockopt(fd, IPPROTO_IPV6, IPV6_LEAVE_GROUP, OPTVAL_T(&mreq), sizeof(mreq));
1138 ret = setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, OPTVAL_T(&mreq), sizeof(mreq));
1140 if (OC_SOCKET_ERROR == ret)
1143 OIC_LOG_V(ERROR, TAG, "IPv6 IPV6_JOIN_GROUP failed: %s", CAIPS_GET_ERROR);
1148 static void applyMulticastToInterface6(uint32_t ifindex)
1150 if (!caglobals.ip.ipv6enabled)
1154 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressInt, ifindex);
1155 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressLnk, ifindex);
1156 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressRlm, ifindex);
1157 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressAdm, ifindex);
1158 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressSit, ifindex);
1159 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressOrg, ifindex);
1160 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressGlb, ifindex);
1162 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressInt, ifindex);
1163 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressLnk, ifindex);
1164 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressRlm, ifindex);
1165 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressAdm, ifindex);
1166 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressSit, ifindex);
1167 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressOrg, ifindex);
1168 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressGlb, ifindex);
1171 CAResult_t CAIPStartListenServer()
1173 OIC_LOG_V(DEBUG, TAG, "IN %s", __func__);
1174 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1177 OIC_LOG_V(ERROR, TAG, "CAIPGetInterfaceInformation() failed: %s", strerror(errno));
1178 return CA_STATUS_FAILED;
1181 size_t len = u_arraylist_length(iflist);
1182 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1184 for (size_t i = 0; i < len; i++)
1186 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1192 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1196 if (ifitem->family == AF_INET)
1198 OIC_LOG_V(DEBUG, TAG, "Adding IPv4 interface(%i) to multicast group", ifitem->index);
1199 applyMulticastToInterface4(ifitem->index);
1201 if (ifitem->family == AF_INET6)
1203 OIC_LOG_V(DEBUG, TAG, "Adding IPv6 interface(%i) to multicast group", ifitem->index);
1204 applyMulticastToInterface6(ifitem->index);
1208 u_arraylist_destroy(iflist);
1209 OIC_LOG_V(DEBUG, TAG, "OUT %s", __func__);
1210 return CA_STATUS_OK;
1213 CAResult_t CAIPStopListenServer()
1215 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1218 OIC_LOG_V(ERROR, TAG, "Get interface info failed: %s", strerror(errno));
1219 return CA_STATUS_FAILED;
1222 size_t len = u_arraylist_length(iflist);
1223 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
1225 for (size_t i = 0; i < len; i++)
1227 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1233 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1237 if (ifitem->family == AF_INET)
1241 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s cloed", ifitem->name);
1243 if (ifitem->family == AF_INET6)
1247 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
1250 u_arraylist_destroy(iflist);
1251 return CA_STATUS_OK;
1254 void CAProcessNewInterface(CAInterface_t *ifitem)
1258 OIC_LOG(DEBUG, TAG, "ifitem is null");
1262 if (ifitem->family == AF_INET6)
1264 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv6 interface(%i) to multicast group", ifitem->index);
1265 applyMulticastToInterface6(ifitem->index);
1267 if (ifitem->family == AF_INET)
1269 OIC_LOG_V(DEBUG, TAG, "Adding a new IPv4 interface(%i) to multicast group", ifitem->index);
1270 applyMulticastToInterface4(ifitem->index);
1274 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
1276 g_packetReceivedCallback = callback;
1279 static void sendData(CASocketFd_t fd, const CAEndpoint_t *endpoint,
1280 const void *data, size_t dlen,
1281 const char *cast, const char *fam)
1283 OIC_LOG_V(DEBUG, TAG, "IN %s", __func__);
1287 OIC_LOG(DEBUG, TAG, "endpoint is null");
1288 if (g_ipErrorHandler)
1290 g_ipErrorHandler(endpoint, data, dlen, CA_STATUS_INVALID_PARAM);
1295 (void)cast; // eliminates release warning
1298 struct sockaddr_storage sock = { .ss_family = 0 };
1299 CAConvertNameToAddr(endpoint->addr, endpoint->port, &sock);
1301 socklen_t socklen = 0;
1302 if (sock.ss_family == AF_INET6)
1304 socklen = sizeof(struct sockaddr_in6);
1308 socklen = sizeof(struct sockaddr_in);
1312 const char *secure = (endpoint->flags & CA_SECURE) ? "secure " : "";
1314 #if !defined(_WIN32)
1315 ssize_t len = sendto(fd, data, dlen, 0, (struct sockaddr *)&sock, socklen);
1316 if (OC_SOCKET_ERROR == len)
1318 // If logging is not defined/enabled.
1319 if (g_ipErrorHandler)
1321 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1323 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %s", secure, cast, fam, strerror(errno));
1324 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1325 len, false, strerror(errno));
1329 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %zd bytes", secure, cast, fam, len);
1330 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1338 int dataToSend = ((dlen - sent) > INT_MAX) ? INT_MAX : (int)(dlen - sent);
1339 len = sendto(fd, ((char*)data) + sent, dataToSend, 0, (struct sockaddr *)&sock, socklen);
1340 if (OC_SOCKET_ERROR == len)
1342 err = WSAGetLastError();
1343 if ((WSAEWOULDBLOCK != err) && (WSAENOBUFS != err))
1345 // If logging is not defined/enabled.
1346 if (g_ipErrorHandler)
1348 g_ipErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
1351 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %i", secure, cast, fam, err);
1357 if (sent != (size_t)len)
1359 OIC_LOG_V(DEBUG, TAG, "%s%s %s sendTo (Partial Send) is successful: "
1360 "currently sent: %ld bytes, "
1361 "total sent: %" PRIuPTR " bytes, "
1362 "remaining: %" PRIuPTR " bytes",
1363 secure, cast, fam, len, sent, (dlen - sent));
1367 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %ld bytes",
1368 secure, cast, fam, len);
1371 } while ((OC_SOCKET_ERROR == len) && ((WSAEWOULDBLOCK == err) || (WSAENOBUFS == err)) || (sent < dlen));
1375 static void sendMulticastData6(const u_arraylist_t *iflist,
1376 CAEndpoint_t *endpoint,
1377 const void *data, size_t datalen)
1381 OIC_LOG(DEBUG, TAG, "endpoint is null");
1385 int scope = endpoint->flags & CA_SCOPE_MASK;
1386 char *ipv6mcname = ipv6mcnames[scope];
1389 OIC_LOG_V(INFO, TAG, "IPv6 multicast scope invalid: %d", scope);
1392 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), ipv6mcname);
1393 CASocketFd_t fd = caglobals.ip.u6.fd;
1395 size_t len = u_arraylist_length(iflist);
1396 for (size_t i = 0; i < len; i++)
1398 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1403 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1407 if (ifitem->family != AF_INET6)
1412 int index = ifitem->index;
1413 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, OPTVAL_T(&index), sizeof (index)))
1415 OIC_LOG_V(ERROR, TAG, "setsockopt6 failed: %s", CAIPS_GET_ERROR);
1418 sendData(fd, endpoint, data, datalen, "multicast", "ipv6");
1422 static void sendMulticastData4(const u_arraylist_t *iflist,
1423 CAEndpoint_t *endpoint,
1424 const void *data, size_t datalen)
1426 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1428 #if defined(USE_IP_MREQN)
1429 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1430 .imr_address.s_addr = htonl(INADDR_ANY),
1433 struct ip_mreq mreq = { .imr_multiaddr.s_addr = IPv4MulticastAddress.s_addr,
1434 .imr_interface = {0}};
1437 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), IPv4_MULTICAST);
1438 CASocketFd_t fd = caglobals.ip.u4.fd;
1440 size_t len = u_arraylist_length(iflist);
1441 for (size_t i = 0; i < len; i++)
1443 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1448 if ((ifitem->flags & IFF_UP_RUNNING_FLAGS) != IFF_UP_RUNNING_FLAGS)
1452 if (ifitem->family != AF_INET)
1456 #if defined(USE_IP_MREQN)
1457 mreq.imr_ifindex = ifitem->index;
1459 mreq.imr_interface.s_addr = htonl(ifitem->index);
1461 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, OPTVAL_T(&mreq), sizeof (mreq)))
1463 OIC_LOG_V(ERROR, TAG, "send IP_MULTICAST_IF failed: %s (using defualt)",
1466 sendData(fd, endpoint, data, datalen, "multicast", "ipv4");
1470 void CAIPSendData(CAEndpoint_t *endpoint, const void *data, size_t datalen,
1473 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1474 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
1476 bool isSecure = (endpoint->flags & CA_SECURE) != 0;
1480 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1482 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1485 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1489 if ((endpoint->flags & CA_IPV6) && caglobals.ip.ipv6enabled)
1491 sendMulticastData6(iflist, endpoint, data, datalen);
1493 if ((endpoint->flags & CA_IPV4) && caglobals.ip.ipv4enabled)
1495 sendMulticastData4(iflist, endpoint, data, datalen);
1498 u_arraylist_destroy(iflist);
1502 if (!endpoint->port) // unicast discovery
1504 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1508 if (caglobals.ip.ipv6enabled && (endpoint->flags & CA_IPV6))
1510 fd = isSecure ? caglobals.ip.u6s.fd : caglobals.ip.u6.fd;
1511 #ifndef __WITH_DTLS__
1512 fd = caglobals.ip.u6.fd;
1514 sendData(fd, endpoint, data, datalen, "unicast", "ipv6");
1516 if (caglobals.ip.ipv4enabled && (endpoint->flags & CA_IPV4))
1518 fd = isSecure ? caglobals.ip.u4s.fd : caglobals.ip.u4.fd;
1519 #ifndef __WITH_DTLS__
1520 fd = caglobals.ip.u4.fd;
1522 sendData(fd, endpoint, data, datalen, "unicast", "ipv4");
1527 CAResult_t CAGetIPInterfaceInformation(CAEndpoint_t **info, size_t *size)
1529 VERIFY_NON_NULL(info, TAG, "info is NULL");
1530 VERIFY_NON_NULL(size, TAG, "size is NULL");
1532 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1535 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1536 return CA_STATUS_FAILED;
1539 size_t len = u_arraylist_length(iflist);
1540 size_t length = len;
1542 #ifdef __WITH_DTLS__
1543 //If DTLS is supported, each interface can support secure port as well
1547 CAEndpoint_t *eps = (CAEndpoint_t *)OICCalloc(length, sizeof (CAEndpoint_t));
1550 OIC_LOG(ERROR, TAG, "Malloc Failed");
1551 u_arraylist_destroy(iflist);
1552 return CA_MEMORY_ALLOC_FAILED;
1555 for (size_t i = 0, j = 0; i < len; i++)
1557 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1563 eps[j].adapter = CA_ADAPTER_IP;
1564 eps[j].ifindex = ifitem->index;
1566 if (ifitem->family == AF_INET6)
1568 eps[j].flags = CA_IPV6;
1569 eps[j].port = caglobals.ip.u6.port;
1573 eps[j].flags = CA_IPV4;
1574 eps[j].port = caglobals.ip.u4.port;
1576 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1578 #ifdef __WITH_DTLS__
1581 eps[j].adapter = CA_ADAPTER_IP;
1582 eps[j].ifindex = ifitem->index;
1584 if (ifitem->family == AF_INET6)
1586 eps[j].flags = CA_IPV6 | CA_SECURE;
1587 eps[j].port = caglobals.ip.u6s.port;
1591 eps[j].flags = CA_IPV4 | CA_SECURE;
1592 eps[j].port = caglobals.ip.u4s.port;
1594 OICStrcpy(eps[j].addr, sizeof(eps[j].addr), ifitem->addr);
1602 u_arraylist_destroy(iflist);
1604 return CA_STATUS_OK;
1607 void CAIPSetErrorHandler(CAIPErrorHandleCallback errorHandleCallback)
1609 g_ipErrorHandler = errorHandleCallback;
1612 CAResult_t CAGetLinkLocalZoneId(uint32_t ifindex, char **zoneId)
1614 return CAGetLinkLocalZoneIdInternal(ifindex, zoneId);