1 /*****************************************************************j
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 #include "caipinterface.h"
23 #include <sys/types.h>
24 #include <sys/socket.h>
27 #include <sys/types.h>
29 #include <sys/select.h>
30 #include <arpa/inet.h>
31 #include <netinet/in.h>
35 #include <linux/netlink.h>
36 #include <linux/rtnetlink.h>
40 #include "caadapterutils.h"
42 #include "caadapternetdtls.h"
45 #include "oic_malloc.h"
46 #include "oic_string.h"
50 * @brief Logging tag for module name
52 #define TAG "IP_SERVER"
54 #define SELECT_TIMEOUT 1 // select() seconds (and termination latency)
56 #define IPv4_MULTICAST "224.0.1.187"
57 static struct in_addr IPv4MulticastAddress = { 0 };
59 #define IPv6_DOMAINS 16
60 #define IPv6_MULTICAST_INT "ff01::fd"
61 static struct in6_addr IPv6MulticastAddressInt;
62 #define IPv6_MULTICAST_LNK "ff02::fd"
63 static struct in6_addr IPv6MulticastAddressLnk;
64 #define IPv6_MULTICAST_RLM "ff03::fd"
65 static struct in6_addr IPv6MulticastAddressRlm;
66 #define IPv6_MULTICAST_ADM "ff04::fd"
67 static struct in6_addr IPv6MulticastAddressAdm;
68 #define IPv6_MULTICAST_SIT "ff05::fd"
69 static struct in6_addr IPv6MulticastAddressSit;
70 #define IPv6_MULTICAST_ORG "ff08::fd"
71 static struct in6_addr IPv6MulticastAddressOrg;
72 #define IPv6_MULTICAST_GLB "ff0e::fd"
73 static struct in6_addr IPv6MulticastAddressGlb;
75 static char *ipv6mcnames[IPv6_DOMAINS] = {
94 static CAIPExceptionCallback g_exceptionCallback;
96 static CAIPPacketReceivedCallback g_packetReceivedCallback;
98 static void CAHandleNetlink();
99 static void CAApplyInterfaces();
100 static void CAFindReadyMessage();
101 static void CASelectReturned(fd_set *readFds, int ret);
102 static void CAProcessNewInterface(CAInterface_t *ifchanged);
103 static CAResult_t CAReceiveMessage(int fd, CATransportFlags_t flags);
105 #define SET(TYPE, FDS) \
106 if (caglobals.ip.TYPE.fd != -1) \
108 FD_SET(caglobals.ip.TYPE.fd, FDS); \
111 #define ISSET(TYPE, FDS, FLAGS) \
112 if (caglobals.ip.TYPE.fd != -1 && FD_ISSET(caglobals.ip.TYPE.fd, FDS)) \
114 fd = caglobals.ip.TYPE.fd; \
118 static void CAReceiveHandler(void *data)
121 OIC_LOG(DEBUG, TAG, "IN");
123 while (!caglobals.ip.terminate)
125 CAFindReadyMessage();
128 OIC_LOG(DEBUG, TAG, "OUT");
131 static void CAFindReadyMessage()
134 struct timeval timeout;
136 timeout.tv_sec = caglobals.ip.selectTimeout;
138 struct timeval *tv = caglobals.ip.selectTimeout == -1 ? NULL : &timeout;
149 if (caglobals.ip.shutdownFds[0] != -1)
151 FD_SET(caglobals.ip.shutdownFds[0], &readFds);
153 if (caglobals.ip.netlinkFd != -1)
155 FD_SET(caglobals.ip.netlinkFd, &readFds);
158 int ret = select(caglobals.ip.maxfd + 1, &readFds, NULL, NULL, tv);
160 if (caglobals.ip.terminate)
162 OIC_LOG_V(DEBUG, TAG, "Packet receiver Stop request received.");
169 OIC_LOG_V(FATAL, TAG, "select error %s", strerror(errno));
174 CASelectReturned(&readFds, ret);
177 static void CASelectReturned(fd_set *readFds, int ret)
181 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
183 while (!caglobals.ip.terminate)
185 ISSET(u6, readFds, CA_IPV6)
186 else ISSET(u6s, readFds, CA_IPV6 | CA_SECURE)
187 else ISSET(u4, readFds, CA_IPV4)
188 else ISSET(u4s, readFds, CA_IPV4 | CA_SECURE)
189 else ISSET(m6, readFds, CA_MULTICAST | CA_IPV6)
190 else ISSET(m6s, readFds, CA_MULTICAST | CA_IPV6 | CA_SECURE)
191 else ISSET(m4, readFds, CA_MULTICAST | CA_IPV4)
192 else ISSET(m4s, readFds, CA_MULTICAST | CA_IPV4 | CA_SECURE)
193 else if (FD_ISSET(caglobals.ip.netlinkFd, readFds))
200 CAInterface_t *ifchanged = CAFindInterfaceChange();
203 CAProcessNewInterface(ifchanged);
209 (void)CAReceiveMessage(fd, flags);
214 static CAResult_t CAReceiveMessage(int fd, CATransportFlags_t flags)
216 char recvBuffer[COAP_MAX_PDU_SIZE];
218 struct sockaddr_storage srcAddr;
219 socklen_t srcAddrLen = sizeof (srcAddr);
221 ssize_t recvLen = recvfrom(fd,
225 (struct sockaddr *)&srcAddr,
229 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
230 return CA_STATUS_FAILED;
233 CASecureEndpoint_t sep =
234 {.endpoint = {.adapter = CA_ADAPTER_IP, .flags = flags}};
238 sep.endpoint.interface = ((struct sockaddr_in6 *)&srcAddr)->sin6_scope_id;
239 ((struct sockaddr_in6 *)&srcAddr)->sin6_scope_id = 0;
241 CAConvertAddrToName(&srcAddr, sep.endpoint.addr, &sep.endpoint.port);
243 if (flags & CA_SECURE)
246 int ret = CAAdapterNetDtlsDecrypt(&sep, (uint8_t *)recvBuffer, recvLen);
247 OIC_LOG_V(DEBUG, TAG, "CAAdapterNetDtlsDecrypt returns [%d]", ret);
249 OIC_LOG(ERROR, TAG, "Encrypted message but no DTLS");
254 if (g_packetReceivedCallback)
256 g_packetReceivedCallback(&sep, recvBuffer, recvLen);
265 OIC_LOG(DEBUG, TAG, "IN");
266 OIC_LOG(DEBUG, TAG, "OUT");
269 static int CACreateSocket(int family, uint16_t *port)
271 int socktype = SOCK_DGRAM;
273 socktype |= SOCK_CLOEXEC;
275 int fd = socket(family, socktype, IPPROTO_UDP);
278 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", strerror(errno));
283 int fl = fcntl(fd, F_GETFD);
284 if (-1 == fl || -1 == fcntl(fd, F_SETFD, fl|FD_CLOEXEC))
286 OIC_LOG_V(ERROR, TAG, "set FD_CLOEXEC failed: %s", strerror(errno));
292 struct sockaddr_storage sa = { .ss_family = family };
295 if (family == AF_INET6)
298 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on)))
300 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", strerror(errno));
302 ((struct sockaddr_in6 *)&sa)->sin6_port = htons(*port);
303 socklen = sizeof (struct sockaddr_in6);
307 ((struct sockaddr_in *)&sa)->sin_port = htons(*port);
308 socklen = sizeof (struct sockaddr_in);
311 if (*port) // use the given port
314 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof (on)))
316 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", strerror(errno));
322 if (-1 == bind(fd, (struct sockaddr *)&sa, socklen))
324 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", strerror(errno));
329 if (!*port) // return the assigned port
331 if (-1 == getsockname(fd, (struct sockaddr *)&sa, &socklen))
333 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", strerror(errno));
337 *port = ntohs(family == AF_INET6 ?
338 ((struct sockaddr_in6 *)&sa)->sin6_port :
339 ((struct sockaddr_in *)&sa)->sin_port);
345 #define CHECKFD(FD) \
346 if (FD > caglobals.ip.maxfd) \
347 caglobals.ip.maxfd = FD;
348 #define NEWSOCKET(FAMILY, NAME) \
349 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port); \
350 CHECKFD(caglobals.ip.NAME.fd)
352 static void CAInitializeNetlink()
355 // create NETLINK fd for interface change notifications
356 struct sockaddr_nl sa = { AF_NETLINK, 0, 0, RTMGRP_LINK };
358 caglobals.ip.netlinkFd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE);
359 if (caglobals.ip.netlinkFd == -1)
361 OIC_LOG_V(ERROR, TAG, "netlink socket failed: %s", strerror(errno));
365 int r = bind(caglobals.ip.netlinkFd, (struct sockaddr *)&sa, sizeof (sa));
368 OIC_LOG_V(ERROR, TAG, "netlink bind failed: %s", strerror(errno));
369 close(caglobals.ip.netlinkFd);
370 caglobals.ip.netlinkFd = -1;
374 CHECKFD(caglobals.ip.netlinkFd);
380 static void CAInitializePipe()
382 caglobals.ip.selectTimeout = -1;
384 int ret = pipe2(caglobals.ip.shutdownFds, O_CLOEXEC);
386 int ret = pipe(caglobals.ip.shutdownFds);
389 ret = fcntl(caglobals.ip.shutdownFds[0], F_GETFD);
392 ret = fcntl(caglobals.ip.shutdownFds[0], F_SETFD, ret|FD_CLOEXEC);
396 ret = fcntl(caglobals.ip.shutdownFds[1], F_GETFD);
400 ret = fcntl(caglobals.ip.shutdownFds[1], F_SETFD, ret|FD_CLOEXEC);
404 close(caglobals.ip.shutdownFds[1]);
405 close(caglobals.ip.shutdownFds[0]);
406 caglobals.ip.shutdownFds[0] = -1;
407 caglobals.ip.shutdownFds[1] = -1;
413 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
414 caglobals.ip.selectTimeout = SELECT_TIMEOUT; //poll needed for shutdown
418 CAResult_t CAIPStartServer(const ca_thread_pool_t threadPool)
420 CAResult_t res = CA_STATUS_OK;
422 if (caglobals.ip.started)
427 if (!IPv4MulticastAddress.s_addr)
429 (void)inet_aton(IPv4_MULTICAST, &IPv4MulticastAddress);
430 (void)inet_pton(AF_INET6, IPv6_MULTICAST_INT, &IPv6MulticastAddressInt);
431 (void)inet_pton(AF_INET6, IPv6_MULTICAST_LNK, &IPv6MulticastAddressLnk);
432 (void)inet_pton(AF_INET6, IPv6_MULTICAST_RLM, &IPv6MulticastAddressRlm);
433 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ADM, &IPv6MulticastAddressAdm);
434 (void)inet_pton(AF_INET6, IPv6_MULTICAST_SIT, &IPv6MulticastAddressSit);
435 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ORG, &IPv6MulticastAddressOrg);
436 (void)inet_pton(AF_INET6, IPv6_MULTICAST_GLB, &IPv6MulticastAddressGlb);
439 if (!caglobals.ip.ipv6enabled && !caglobals.ip.ipv4enabled)
441 caglobals.ip.ipv4enabled = true; // only needed to run CA tests
444 if (caglobals.ip.ipv6enabled)
446 NEWSOCKET(AF_INET6, u6)
447 NEWSOCKET(AF_INET6, u6s)
448 NEWSOCKET(AF_INET6, m6)
449 NEWSOCKET(AF_INET6, m6s)
450 OIC_LOG_V(INFO, TAG, "IPv6 unicast port: %u", caglobals.ip.u6.port);
452 if (caglobals.ip.ipv4enabled)
454 NEWSOCKET(AF_INET, u4)
455 NEWSOCKET(AF_INET, u4s)
456 NEWSOCKET(AF_INET, m4)
457 NEWSOCKET(AF_INET, m4s)
458 OIC_LOG_V(INFO, TAG, "IPv4 unicast port: %u", caglobals.ip.u4.port);
461 OIC_LOG_V(DEBUG, TAG,
462 "socket summary: u6=%d, u6s=%d, u4=%d, u4s=%d, m6=%d, m6s=%d, m4=%d, m4s=%d",
463 caglobals.ip.u6.fd, caglobals.ip.u6s.fd, caglobals.ip.u4.fd, caglobals.ip.u4s.fd,
464 caglobals.ip.m6.fd, caglobals.ip.m6s.fd, caglobals.ip.m4.fd, caglobals.ip.m4s.fd);
466 OIC_LOG_V(DEBUG, TAG,
467 "port summary: u6 port=%d, u6s port=%d, u4 port=%d, u4s port=%d, m6 port=%d,"
468 "m6s port=%d, m4 port=%d, m4s port=%d",
469 caglobals.ip.u6.port, caglobals.ip.u6s.port, caglobals.ip.u4.port,
470 caglobals.ip.u4s.port, caglobals.ip.m6.port, caglobals.ip.m6s.port,
471 caglobals.ip.m4.port, caglobals.ip.m4s.port);
472 // create pipe for fast shutdown
474 CHECKFD(caglobals.ip.shutdownFds[0]);
475 CHECKFD(caglobals.ip.shutdownFds[1]);
477 // create source of network interface change notifications
478 CAInitializeNetlink();
480 caglobals.ip.selectTimeout = CAGetPollingInterval(caglobals.ip.selectTimeout);
484 caglobals.ip.terminate = false;
485 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL);
486 if (CA_STATUS_OK != res)
488 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
491 OIC_LOG(DEBUG, TAG, "CAReceiveHandler thread started successfully.");
493 caglobals.ip.started = true;
497 void CAIPStopServer()
499 OIC_LOG(DEBUG, TAG, "IN");
501 caglobals.ip.terminate = true;
503 if (caglobals.ip.shutdownFds[1] != -1)
505 close(caglobals.ip.shutdownFds[1]);
506 // receive thread will stop immediately
510 // receive thread will stop in SELECT_TIMEOUT seconds.
513 OIC_LOG(DEBUG, TAG, "OUT");
516 void CAWakeUpForChange()
518 if (caglobals.ip.shutdownFds[1] != -1)
523 len = write(caglobals.ip.shutdownFds[1], "w", 1);
524 } while ((len == -1) && (errno == EINTR));
525 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
527 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
532 static void applyMulticastToInterface4(struct in_addr inaddr)
534 if (!caglobals.ip.ipv4enabled)
539 struct ip_mreq mreq = { .imr_multiaddr = IPv4MulticastAddress,
540 .imr_interface = inaddr};
541 if (setsockopt(caglobals.ip.m4.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof (mreq)))
543 if (EADDRINUSE != errno)
545 OIC_LOG_V(ERROR, TAG, "IPv4 IP_ADD_MEMBERSHIP failed: %s", strerror(errno));
548 if (setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof (mreq)))
550 if (EADDRINUSE != errno)
552 OIC_LOG_V(ERROR, TAG, "secure IPv4 IP_ADD_MEMBERSHIP failed: %s", strerror(errno));
557 static void applyMulticast6(int fd, struct in6_addr *addr, uint32_t interface)
559 struct ipv6_mreq mreq;
560 mreq.ipv6mr_multiaddr = *addr;
561 mreq.ipv6mr_interface = interface;
562 if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof (mreq)))
564 if (EADDRINUSE != errno)
566 OIC_LOG_V(ERROR, TAG, "IPv6 IP_ADD_MEMBERSHIP failed: %s", strerror(errno));
571 static void applyMulticastToInterface6(uint32_t interface)
573 if (!caglobals.ip.ipv6enabled)
577 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressInt, interface);
578 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressLnk, interface);
579 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressRlm, interface);
580 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressAdm, interface);
581 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressSit, interface);
582 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressOrg, interface);
583 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressGlb, interface);
584 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressInt, interface);
585 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressLnk, interface);
586 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressRlm, interface);
587 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressAdm, interface);
588 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressSit, interface);
589 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressOrg, interface);
590 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressGlb, interface);
593 static void CAApplyInterfaces()
595 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
598 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
602 uint32_t len = u_arraylist_length(iflist);
603 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
605 for (uint32_t i = 0; i < len; i++)
607 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
613 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
617 if (ifitem->family == AF_INET)
619 struct in_addr inaddr;
620 inaddr.s_addr = ifitem->ipv4addr;
621 applyMulticastToInterface4(inaddr);
622 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s", ifitem->name);
624 if (ifitem->family == AF_INET6)
626 applyMulticastToInterface6(ifitem->index);
627 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
631 u_arraylist_destroy(iflist);
634 static void CAProcessNewInterface(CAInterface_t *ifitem)
636 applyMulticastToInterface6(ifitem->index);
637 struct in_addr inaddr;
638 inaddr.s_addr = ifitem->ipv4addr;
639 applyMulticastToInterface4(inaddr);
641 static void CAHandleNetlink()
646 struct sockaddr_nl sa;
647 struct iovec iov = { buf, sizeof (buf) };
648 struct msghdr msg = { (void *)&sa, sizeof (sa), &iov, 1, NULL, 0, 0 };
650 size_t len = recvmsg(caglobals.ip.netlinkFd, &msg, 0);
652 for (nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, len); nh = NLMSG_NEXT(nh, len))
654 if (nh->nlmsg_type != RTM_NEWLINK)
659 struct ifinfomsg *ifi = (struct ifinfomsg *)NLMSG_DATA(nh);
660 if (!ifi || (ifi->ifi_flags & IFF_LOOPBACK) || !(ifi->ifi_flags & IFF_RUNNING))
665 int newIndex = ifi->ifi_index;
667 u_arraylist_t *iflist = CAIPGetInterfaceInformation(newIndex);
670 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
674 uint32_t listLength = u_arraylist_length(iflist);
675 for (uint32_t i = 0; i < listLength; i++)
677 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
683 if ((int)ifitem->index != newIndex)
688 CAProcessNewInterface(ifitem);
689 break; // we found the one we were looking for
691 u_arraylist_destroy(iflist);
696 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
698 OIC_LOG(DEBUG, TAG, "IN");
700 g_packetReceivedCallback = callback;
702 OIC_LOG(DEBUG, TAG, "OUT");
705 void CAIPSetExceptionCallback(CAIPExceptionCallback callback)
707 OIC_LOG(DEBUG, TAG, "IN");
709 g_exceptionCallback = callback;
711 OIC_LOG(DEBUG, TAG, "OUT");
714 static void sendData(int fd, const CAEndpoint_t *endpoint,
715 const void *data, uint32_t dlen,
716 const char *cast, const char *fam)
718 OIC_LOG(DEBUG, TAG, "IN");
720 char *secure = (endpoint->flags & CA_SECURE) ? "secure " : "";
721 (void)secure; // eliminates release warning
722 struct sockaddr_storage sock;
723 CAConvertNameToAddr(endpoint->addr, endpoint->port, &sock);
726 if (sock.ss_family == AF_INET6)
728 struct sockaddr_in6 *sock6 = (struct sockaddr_in6 *)&sock;
729 if (!sock6->sin6_scope_id)
731 sock6->sin6_scope_id = endpoint->interface;
733 socklen = sizeof(struct sockaddr_in6);
737 socklen = sizeof(struct sockaddr_in);
740 ssize_t len = sendto(fd, data, dlen, 0, (struct sockaddr *)&sock, socklen);
743 // If logging is not defined/enabled.
746 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %s", secure, cast, fam, strerror(errno));
750 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %d bytes", secure, cast, fam, len);
754 static void sendMulticastData6(const u_arraylist_t *iflist,
755 CAEndpoint_t *endpoint,
756 const void *data, uint32_t datalen)
758 int scope = endpoint->flags & CA_SCOPE_MASK;
759 char *ipv6mcname = ipv6mcnames[scope];
762 OIC_LOG_V(INFO, TAG, "IPv6 multicast scope invalid: %d", scope);
765 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), ipv6mcname);
766 int fd = caglobals.ip.u6.fd;
768 uint32_t len = u_arraylist_length(iflist);
769 for (uint32_t i = 0; i < len; i++)
771 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
776 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
780 if (ifitem->family != AF_INET6)
785 int index = ifitem->index;
786 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &index, sizeof (index)))
788 OIC_LOG_V(ERROR, TAG, "setsockopt6 failed: %s", strerror(errno));
791 sendData(fd, endpoint, data, datalen, "multicast", "ipv6");
795 static void sendMulticastData4(const u_arraylist_t *iflist,
796 CAEndpoint_t *endpoint,
797 const void *data, uint32_t datalen)
799 struct ip_mreq mreq = { .imr_multiaddr = IPv4MulticastAddress };
800 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), IPv4_MULTICAST);
801 int fd = caglobals.ip.u4.fd;
803 uint32_t len = u_arraylist_length(iflist);
804 for (uint32_t i = 0; i < len; i++)
806 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
811 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
815 if (ifitem->family != AF_INET)
820 struct in_addr inaddr;
821 inaddr.s_addr = ifitem->ipv4addr;
822 mreq.imr_interface = inaddr;
823 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, &mreq, sizeof (mreq)))
825 OIC_LOG_V(ERROR, TAG, "send IP_MULTICAST_IF failed: %s (using defualt)",
828 sendData(fd, endpoint, data, datalen, "multicast", "ipv4");
832 void CAIPSendData(CAEndpoint_t *endpoint, const void *data, uint32_t datalen,
835 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
836 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
838 bool isSecure = (endpoint->flags & CA_SECURE) != 0;
842 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
844 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
847 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
851 if ((endpoint->flags & CA_IPV6) && caglobals.ip.ipv6enabled)
853 sendMulticastData6(iflist, endpoint, data, datalen);
855 if ((endpoint->flags & CA_IPV4) && caglobals.ip.ipv4enabled)
857 sendMulticastData4(iflist, endpoint, data, datalen);
860 u_arraylist_destroy(iflist);
864 if (!endpoint->port) // unicast discovery
866 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
870 if (caglobals.ip.ipv6enabled && (endpoint->flags & CA_IPV6))
872 fd = isSecure ? caglobals.ip.u6s.fd : caglobals.ip.u6.fd;
873 #ifndef __WITH_DTLS__
874 fd = caglobals.ip.u6.fd;
876 sendData(fd, endpoint, data, datalen, "unicast", "ipv6");
878 if (caglobals.ip.ipv4enabled && (endpoint->flags & CA_IPV4))
880 fd = isSecure ? caglobals.ip.u4s.fd : caglobals.ip.u4.fd;
881 #ifndef __WITH_DTLS__
882 fd = caglobals.ip.u4.fd;
884 sendData(fd, endpoint, data, datalen, "unicast", "ipv4");
889 CAResult_t CAGetIPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
891 OIC_LOG(DEBUG, TAG, "IN");
893 VERIFY_NON_NULL(info, TAG, "info is NULL");
894 VERIFY_NON_NULL(size, TAG, "size is NULL");
896 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
899 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
900 return CA_STATUS_FAILED;
903 uint32_t len = u_arraylist_length(iflist);
904 uint32_t length = len;
907 //If DTLS is supported, each interface can support secure port as well
911 CAEndpoint_t *eps = (CAEndpoint_t *)OICCalloc(length, sizeof (CAEndpoint_t));
914 OIC_LOG(ERROR, TAG, "Malloc Failed");
915 u_arraylist_destroy(iflist);
916 return CA_MEMORY_ALLOC_FAILED;
919 for (uint32_t i = 0, j = 0; i < len; i++)
921 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
927 eps[j].adapter = CA_ADAPTER_IP;
928 eps[j].interface = 0;
930 if (ifitem->family == AF_INET6)
932 eps[j].flags = CA_IPV6;
933 eps[j].port = caglobals.ip.u6.port;
937 eps[j].flags = CA_IPV4;
938 eps[j].port = caglobals.ip.u4.port;
940 unsigned char *addr= (unsigned char *) &(ifitem->ipv4addr);
941 snprintf(eps[j].addr, MAX_ADDR_STR_SIZE_CA, "%d.%d.%d.%d",
942 addr[0], addr[1], addr[2], addr[3]);
948 eps[j].adapter = CA_ADAPTER_IP;
949 eps[j].interface = 0;
951 if (ifitem->family == AF_INET6)
953 eps[j].flags = CA_IPV6 | CA_SECURE;
954 eps[j].port = caglobals.ip.u6s.port;
958 eps[j].flags = CA_IPV4 | CA_SECURE;
959 eps[j].port = caglobals.ip.u4s.port;
961 unsigned char *addr= (unsigned char *) &(ifitem->ipv4addr);
962 snprintf(eps[j].addr, MAX_ADDR_STR_SIZE_CA, "%d.%d.%d.%d",
963 addr[0], addr[1], addr[2], addr[3]);
972 u_arraylist_destroy(iflist);
974 OIC_LOG(DEBUG, TAG, "OUT");