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 CAFindReadyMessage();
100 static void CASelectReturned(fd_set *readFds, int ret);
101 static void CAProcessNewInterface(CAInterface_t *ifchanged);
102 static CAResult_t CAReceiveMessage(int fd, CATransportFlags_t flags);
104 #define SET(TYPE, FDS) \
105 if (caglobals.ip.TYPE.fd != -1) \
107 FD_SET(caglobals.ip.TYPE.fd, FDS); \
110 #define ISSET(TYPE, FDS, FLAGS) \
111 if (caglobals.ip.TYPE.fd != -1 && FD_ISSET(caglobals.ip.TYPE.fd, FDS)) \
113 fd = caglobals.ip.TYPE.fd; \
117 static void CAReceiveHandler(void *data)
120 OIC_LOG(DEBUG, TAG, "IN");
122 while (!caglobals.ip.terminate)
124 CAFindReadyMessage();
127 OIC_LOG(DEBUG, TAG, "OUT");
130 static void CAFindReadyMessage()
133 struct timeval timeout;
135 timeout.tv_sec = caglobals.ip.selectTimeout;
137 struct timeval *tv = caglobals.ip.selectTimeout == -1 ? NULL : &timeout;
148 if (caglobals.ip.shutdownFds[0] != -1)
150 FD_SET(caglobals.ip.shutdownFds[0], &readFds);
152 if (caglobals.ip.netlinkFd != -1)
154 FD_SET(caglobals.ip.netlinkFd, &readFds);
157 int ret = select(caglobals.ip.maxfd + 1, &readFds, NULL, NULL, tv);
159 if (caglobals.ip.terminate)
161 OIC_LOG_V(DEBUG, TAG, "Packet receiver Stop request received.");
168 OIC_LOG_V(FATAL, TAG, "select error %s", strerror(errno));
173 CASelectReturned(&readFds, ret);
176 static void CASelectReturned(fd_set *readFds, int ret)
180 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
182 while (!caglobals.ip.terminate)
184 ISSET(u6, readFds, CA_IPV6)
185 else ISSET(u6s, readFds, CA_IPV6 | CA_SECURE)
186 else ISSET(u4, readFds, CA_IPV4)
187 else ISSET(u4s, readFds, CA_IPV4 | CA_SECURE)
188 else ISSET(m6, readFds, CA_MULTICAST | CA_IPV6)
189 else ISSET(m6s, readFds, CA_MULTICAST | CA_IPV6 | CA_SECURE)
190 else ISSET(m4, readFds, CA_MULTICAST | CA_IPV4)
191 else ISSET(m4s, readFds, CA_MULTICAST | CA_IPV4 | CA_SECURE)
192 else if (FD_ISSET(caglobals.ip.netlinkFd, readFds))
199 CAInterface_t *ifchanged = CAFindInterfaceChange();
202 CAProcessNewInterface(ifchanged);
208 (void)CAReceiveMessage(fd, flags);
213 static CAResult_t CAReceiveMessage(int fd, CATransportFlags_t flags)
215 char recvBuffer[COAP_MAX_PDU_SIZE];
217 struct sockaddr_storage srcAddr;
218 socklen_t srcAddrLen = sizeof (srcAddr);
220 ssize_t recvLen = recvfrom(fd,
224 (struct sockaddr *)&srcAddr,
228 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
229 return CA_STATUS_FAILED;
232 CASecureEndpoint_t sep =
233 {.endpoint = {.adapter = CA_ADAPTER_IP, .flags = flags}};
237 sep.endpoint.interface = ((struct sockaddr_in6 *)&srcAddr)->sin6_scope_id;
238 ((struct sockaddr_in6 *)&srcAddr)->sin6_scope_id = 0;
240 CAConvertAddrToName(&srcAddr, sep.endpoint.addr, &sep.endpoint.port);
242 if (flags & CA_SECURE)
245 int ret = CAAdapterNetDtlsDecrypt(&sep, (uint8_t *)recvBuffer, recvLen);
246 OIC_LOG_V(DEBUG, TAG, "CAAdapterNetDtlsDecrypt returns [%d]", ret);
248 OIC_LOG(ERROR, TAG, "Encrypted message but no DTLS");
253 if (g_packetReceivedCallback)
255 g_packetReceivedCallback(&sep, recvBuffer, recvLen);
264 OIC_LOG(DEBUG, TAG, "IN");
265 OIC_LOG(DEBUG, TAG, "OUT");
268 static int CACreateSocket(int family, uint16_t *port)
270 int socktype = SOCK_DGRAM;
272 socktype |= SOCK_CLOEXEC;
274 int fd = socket(family, socktype, IPPROTO_UDP);
277 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", strerror(errno));
282 int fl = fcntl(fd, F_GETFD);
283 if (-1 == fl || -1 == fcntl(fd, F_SETFD, fl|FD_CLOEXEC))
285 OIC_LOG_V(ERROR, TAG, "set FD_CLOEXEC failed: %s", strerror(errno));
291 struct sockaddr_storage sa = { .ss_family = family };
294 if (family == AF_INET6)
297 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on)))
299 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", strerror(errno));
301 ((struct sockaddr_in6 *)&sa)->sin6_port = htons(*port);
302 socklen = sizeof (struct sockaddr_in6);
306 ((struct sockaddr_in *)&sa)->sin_port = htons(*port);
307 socklen = sizeof (struct sockaddr_in);
310 if (*port) // use the given port
313 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof (on)))
315 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", strerror(errno));
321 if (-1 == bind(fd, (struct sockaddr *)&sa, socklen))
323 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", strerror(errno));
328 if (!*port) // return the assigned port
330 if (-1 == getsockname(fd, (struct sockaddr *)&sa, &socklen))
332 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", strerror(errno));
336 *port = ntohs(family == AF_INET6 ?
337 ((struct sockaddr_in6 *)&sa)->sin6_port :
338 ((struct sockaddr_in *)&sa)->sin_port);
344 #define CHECKFD(FD) \
345 if (FD > caglobals.ip.maxfd) \
346 caglobals.ip.maxfd = FD;
347 #define NEWSOCKET(FAMILY, NAME) \
348 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port); \
349 CHECKFD(caglobals.ip.NAME.fd)
351 static void CAInitializeNetlink()
354 // create NETLINK fd for interface change notifications
355 struct sockaddr_nl sa = { AF_NETLINK, 0, 0, RTMGRP_LINK };
357 caglobals.ip.netlinkFd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE);
358 if (caglobals.ip.netlinkFd == -1)
360 OIC_LOG_V(ERROR, TAG, "netlink socket failed: %s", strerror(errno));
364 int r = bind(caglobals.ip.netlinkFd, (struct sockaddr *)&sa, sizeof (sa));
367 OIC_LOG_V(ERROR, TAG, "netlink bind failed: %s", strerror(errno));
368 close(caglobals.ip.netlinkFd);
369 caglobals.ip.netlinkFd = -1;
373 CHECKFD(caglobals.ip.netlinkFd);
379 static void CAInitializePipe()
381 caglobals.ip.selectTimeout = -1;
383 int ret = pipe2(caglobals.ip.shutdownFds, O_CLOEXEC);
385 int ret = pipe(caglobals.ip.shutdownFds);
388 ret = fcntl(caglobals.ip.shutdownFds[0], F_GETFD);
391 ret = fcntl(caglobals.ip.shutdownFds[0], F_SETFD, ret|FD_CLOEXEC);
395 ret = fcntl(caglobals.ip.shutdownFds[1], F_GETFD);
399 ret = fcntl(caglobals.ip.shutdownFds[1], F_SETFD, ret|FD_CLOEXEC);
403 close(caglobals.ip.shutdownFds[1]);
404 close(caglobals.ip.shutdownFds[0]);
405 caglobals.ip.shutdownFds[0] = -1;
406 caglobals.ip.shutdownFds[1] = -1;
412 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
413 caglobals.ip.selectTimeout = SELECT_TIMEOUT; //poll needed for shutdown
417 CAResult_t CAIPStartServer(const ca_thread_pool_t threadPool)
419 CAResult_t res = CA_STATUS_OK;
421 if (caglobals.ip.started)
426 if (!IPv4MulticastAddress.s_addr)
428 (void)inet_aton(IPv4_MULTICAST, &IPv4MulticastAddress);
429 (void)inet_pton(AF_INET6, IPv6_MULTICAST_INT, &IPv6MulticastAddressInt);
430 (void)inet_pton(AF_INET6, IPv6_MULTICAST_LNK, &IPv6MulticastAddressLnk);
431 (void)inet_pton(AF_INET6, IPv6_MULTICAST_RLM, &IPv6MulticastAddressRlm);
432 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ADM, &IPv6MulticastAddressAdm);
433 (void)inet_pton(AF_INET6, IPv6_MULTICAST_SIT, &IPv6MulticastAddressSit);
434 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ORG, &IPv6MulticastAddressOrg);
435 (void)inet_pton(AF_INET6, IPv6_MULTICAST_GLB, &IPv6MulticastAddressGlb);
438 if (!caglobals.ip.ipv6enabled && !caglobals.ip.ipv4enabled)
440 caglobals.ip.ipv4enabled = true; // only needed to run CA tests
443 if (caglobals.ip.ipv6enabled)
445 NEWSOCKET(AF_INET6, u6)
446 NEWSOCKET(AF_INET6, u6s)
447 NEWSOCKET(AF_INET6, m6)
448 NEWSOCKET(AF_INET6, m6s)
449 OIC_LOG_V(INFO, TAG, "IPv6 unicast port: %u", caglobals.ip.u6.port);
451 if (caglobals.ip.ipv4enabled)
453 NEWSOCKET(AF_INET, u4)
454 NEWSOCKET(AF_INET, u4s)
455 NEWSOCKET(AF_INET, m4)
456 NEWSOCKET(AF_INET, m4s)
457 OIC_LOG_V(INFO, TAG, "IPv4 unicast port: %u", caglobals.ip.u4.port);
460 OIC_LOG_V(DEBUG, TAG,
461 "socket summary: u6=%d, u6s=%d, u4=%d, u4s=%d, m6=%d, m6s=%d, m4=%d, m4s=%d",
462 caglobals.ip.u6.fd, caglobals.ip.u6s.fd, caglobals.ip.u4.fd, caglobals.ip.u4s.fd,
463 caglobals.ip.m6.fd, caglobals.ip.m6s.fd, caglobals.ip.m4.fd, caglobals.ip.m4s.fd);
465 OIC_LOG_V(DEBUG, TAG,
466 "port summary: u6 port=%d, u6s port=%d, u4 port=%d, u4s port=%d, m6 port=%d,"
467 "m6s port=%d, m4 port=%d, m4s port=%d",
468 caglobals.ip.u6.port, caglobals.ip.u6s.port, caglobals.ip.u4.port,
469 caglobals.ip.u4s.port, caglobals.ip.m6.port, caglobals.ip.m6s.port,
470 caglobals.ip.m4.port, caglobals.ip.m4s.port);
471 // create pipe for fast shutdown
473 CHECKFD(caglobals.ip.shutdownFds[0]);
474 CHECKFD(caglobals.ip.shutdownFds[1]);
476 // create source of network interface change notifications
477 CAInitializeNetlink();
479 caglobals.ip.selectTimeout = CAGetPollingInterval(caglobals.ip.selectTimeout);
481 res = CAIPStartListenServer();
482 if (CA_STATUS_OK != res)
484 OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", res);
488 caglobals.ip.terminate = false;
489 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL);
490 if (CA_STATUS_OK != res)
492 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
495 OIC_LOG(DEBUG, TAG, "CAReceiveHandler thread started successfully.");
497 caglobals.ip.started = true;
501 void CAIPStopServer()
503 OIC_LOG(DEBUG, TAG, "IN");
505 caglobals.ip.started = false;
506 caglobals.ip.terminate = true;
508 if (caglobals.ip.shutdownFds[1] != -1)
510 close(caglobals.ip.shutdownFds[1]);
511 // receive thread will stop immediately
515 // receive thread will stop in SELECT_TIMEOUT seconds.
518 OIC_LOG(DEBUG, TAG, "OUT");
521 void CAWakeUpForChange()
523 if (caglobals.ip.shutdownFds[1] != -1)
528 len = write(caglobals.ip.shutdownFds[1], "w", 1);
529 } while ((len == -1) && (errno == EINTR));
530 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
532 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
537 static void applyMulticastToInterface4(struct in_addr inaddr)
539 if (!caglobals.ip.ipv4enabled)
544 struct ip_mreq mreq = { .imr_multiaddr = IPv4MulticastAddress,
545 .imr_interface = inaddr};
546 if (setsockopt(caglobals.ip.m4.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof (mreq)))
548 if (EADDRINUSE != errno)
550 OIC_LOG_V(ERROR, TAG, "IPv4 IP_ADD_MEMBERSHIP failed: %s", strerror(errno));
553 if (setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof (mreq)))
555 if (EADDRINUSE != errno)
557 OIC_LOG_V(ERROR, TAG, "secure IPv4 IP_ADD_MEMBERSHIP failed: %s", strerror(errno));
562 static void applyMulticast6(int fd, struct in6_addr *addr, uint32_t interface)
564 struct ipv6_mreq mreq;
565 mreq.ipv6mr_multiaddr = *addr;
566 mreq.ipv6mr_interface = interface;
567 if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof (mreq)))
569 if (EADDRINUSE != errno)
571 OIC_LOG_V(ERROR, TAG, "IPv6 IP_ADD_MEMBERSHIP failed: %s", strerror(errno));
576 static void applyMulticastToInterface6(uint32_t interface)
578 if (!caglobals.ip.ipv6enabled)
582 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressInt, interface);
583 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressLnk, interface);
584 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressRlm, interface);
585 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressAdm, interface);
586 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressSit, interface);
587 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressOrg, interface);
588 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressGlb, interface);
589 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressInt, interface);
590 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressLnk, interface);
591 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressRlm, interface);
592 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressAdm, interface);
593 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressSit, interface);
594 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressOrg, interface);
595 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressGlb, interface);
598 CAResult_t CAIPStartListenServer()
600 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
603 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
604 return CA_STATUS_FAILED;
607 uint32_t len = u_arraylist_length(iflist);
608 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
610 for (uint32_t i = 0; i < len; i++)
612 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
618 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
622 if (ifitem->family == AF_INET)
624 struct in_addr inaddr;
625 inaddr.s_addr = ifitem->ipv4addr;
626 applyMulticastToInterface4(inaddr);
627 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s", ifitem->name);
629 if (ifitem->family == AF_INET6)
631 applyMulticastToInterface6(ifitem->index);
632 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
636 u_arraylist_destroy(iflist);
640 CAResult_t CAIPStopListenServer()
642 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
645 OIC_LOG_V(ERROR, TAG, "Get interface info failed: %s", strerror(errno));
646 return CA_STATUS_FAILED;
649 uint32_t len = u_arraylist_length(iflist);
650 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
652 for (uint32_t i = 0; i < len; i++)
654 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
661 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
665 if (ifitem->family == AF_INET)
667 close(caglobals.ip.m4.fd);
668 close(caglobals.ip.m4s.fd);
669 caglobals.ip.m4.fd = -1;
670 caglobals.ip.m4s.fd = -1;
671 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s cloed", ifitem->name);
673 if (ifitem->family == AF_INET6)
675 close(caglobals.ip.m6.fd);
676 close(caglobals.ip.m6s.fd);
677 caglobals.ip.m6.fd = -1;
678 caglobals.ip.m6s.fd = -1;
679 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
682 u_arraylist_destroy(iflist);
686 static void CAProcessNewInterface(CAInterface_t *ifitem)
688 applyMulticastToInterface6(ifitem->index);
689 struct in_addr inaddr;
690 inaddr.s_addr = ifitem->ipv4addr;
691 applyMulticastToInterface4(inaddr);
693 static void CAHandleNetlink()
698 struct sockaddr_nl sa;
699 struct iovec iov = { buf, sizeof (buf) };
700 struct msghdr msg = { (void *)&sa, sizeof (sa), &iov, 1, NULL, 0, 0 };
702 size_t len = recvmsg(caglobals.ip.netlinkFd, &msg, 0);
704 for (nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, len); nh = NLMSG_NEXT(nh, len))
706 if (nh->nlmsg_type != RTM_NEWLINK)
711 struct ifinfomsg *ifi = (struct ifinfomsg *)NLMSG_DATA(nh);
712 if (!ifi || (ifi->ifi_flags & IFF_LOOPBACK) || !(ifi->ifi_flags & IFF_RUNNING))
717 int newIndex = ifi->ifi_index;
719 u_arraylist_t *iflist = CAIPGetInterfaceInformation(newIndex);
722 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
726 uint32_t listLength = u_arraylist_length(iflist);
727 for (uint32_t i = 0; i < listLength; i++)
729 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
735 if ((int)ifitem->index != newIndex)
740 CAProcessNewInterface(ifitem);
741 break; // we found the one we were looking for
743 u_arraylist_destroy(iflist);
748 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
750 OIC_LOG(DEBUG, TAG, "IN");
752 g_packetReceivedCallback = callback;
754 OIC_LOG(DEBUG, TAG, "OUT");
757 void CAIPSetExceptionCallback(CAIPExceptionCallback callback)
759 OIC_LOG(DEBUG, TAG, "IN");
761 g_exceptionCallback = callback;
763 OIC_LOG(DEBUG, TAG, "OUT");
766 static void sendData(int fd, const CAEndpoint_t *endpoint,
767 const void *data, uint32_t dlen,
768 const char *cast, const char *fam)
770 OIC_LOG(DEBUG, TAG, "IN");
772 char *secure = (endpoint->flags & CA_SECURE) ? "secure " : "";
773 (void)secure; // eliminates release warning
774 struct sockaddr_storage sock;
775 CAConvertNameToAddr(endpoint->addr, endpoint->port, &sock);
778 if (sock.ss_family == AF_INET6)
780 struct sockaddr_in6 *sock6 = (struct sockaddr_in6 *)&sock;
781 if (!sock6->sin6_scope_id)
783 sock6->sin6_scope_id = endpoint->interface;
785 socklen = sizeof(struct sockaddr_in6);
789 socklen = sizeof(struct sockaddr_in);
792 ssize_t len = sendto(fd, data, dlen, 0, (struct sockaddr *)&sock, socklen);
795 // If logging is not defined/enabled.
798 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %s", secure, cast, fam, strerror(errno));
802 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %d bytes", secure, cast, fam, len);
806 static void sendMulticastData6(const u_arraylist_t *iflist,
807 CAEndpoint_t *endpoint,
808 const void *data, uint32_t datalen)
810 int scope = endpoint->flags & CA_SCOPE_MASK;
811 char *ipv6mcname = ipv6mcnames[scope];
814 OIC_LOG_V(INFO, TAG, "IPv6 multicast scope invalid: %d", scope);
817 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), ipv6mcname);
818 int fd = caglobals.ip.u6.fd;
820 uint32_t len = u_arraylist_length(iflist);
821 for (uint32_t i = 0; i < len; i++)
823 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
828 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
832 if (ifitem->family != AF_INET6)
837 int index = ifitem->index;
838 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &index, sizeof (index)))
840 OIC_LOG_V(ERROR, TAG, "setsockopt6 failed: %s", strerror(errno));
843 sendData(fd, endpoint, data, datalen, "multicast", "ipv6");
847 static void sendMulticastData4(const u_arraylist_t *iflist,
848 CAEndpoint_t *endpoint,
849 const void *data, uint32_t datalen)
851 struct ip_mreq mreq = { .imr_multiaddr = IPv4MulticastAddress };
852 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), IPv4_MULTICAST);
853 int fd = caglobals.ip.u4.fd;
855 uint32_t len = u_arraylist_length(iflist);
856 for (uint32_t i = 0; i < len; i++)
858 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
863 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
867 if (ifitem->family != AF_INET)
872 struct in_addr inaddr;
873 inaddr.s_addr = ifitem->ipv4addr;
874 mreq.imr_interface = inaddr;
875 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, &mreq, sizeof (mreq)))
877 OIC_LOG_V(ERROR, TAG, "send IP_MULTICAST_IF failed: %s (using defualt)",
880 sendData(fd, endpoint, data, datalen, "multicast", "ipv4");
884 void CAIPSendData(CAEndpoint_t *endpoint, const void *data, uint32_t datalen,
887 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
888 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
890 bool isSecure = (endpoint->flags & CA_SECURE) != 0;
894 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
896 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
899 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
903 if ((endpoint->flags & CA_IPV6) && caglobals.ip.ipv6enabled)
905 sendMulticastData6(iflist, endpoint, data, datalen);
907 if ((endpoint->flags & CA_IPV4) && caglobals.ip.ipv4enabled)
909 sendMulticastData4(iflist, endpoint, data, datalen);
912 u_arraylist_destroy(iflist);
916 if (!endpoint->port) // unicast discovery
918 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
922 if (caglobals.ip.ipv6enabled && (endpoint->flags & CA_IPV6))
924 fd = isSecure ? caglobals.ip.u6s.fd : caglobals.ip.u6.fd;
925 #ifndef __WITH_DTLS__
926 fd = caglobals.ip.u6.fd;
928 sendData(fd, endpoint, data, datalen, "unicast", "ipv6");
930 if (caglobals.ip.ipv4enabled && (endpoint->flags & CA_IPV4))
932 fd = isSecure ? caglobals.ip.u4s.fd : caglobals.ip.u4.fd;
933 #ifndef __WITH_DTLS__
934 fd = caglobals.ip.u4.fd;
936 sendData(fd, endpoint, data, datalen, "unicast", "ipv4");
941 CAResult_t CAGetIPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
943 OIC_LOG(DEBUG, TAG, "IN");
945 VERIFY_NON_NULL(info, TAG, "info is NULL");
946 VERIFY_NON_NULL(size, TAG, "size is NULL");
948 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
951 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
952 return CA_STATUS_FAILED;
955 uint32_t len = u_arraylist_length(iflist);
956 uint32_t length = len;
959 //If DTLS is supported, each interface can support secure port as well
963 CAEndpoint_t *eps = (CAEndpoint_t *)OICCalloc(length, sizeof (CAEndpoint_t));
966 OIC_LOG(ERROR, TAG, "Malloc Failed");
967 u_arraylist_destroy(iflist);
968 return CA_MEMORY_ALLOC_FAILED;
971 for (uint32_t i = 0, j = 0; i < len; i++)
973 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
979 eps[j].adapter = CA_ADAPTER_IP;
980 eps[j].interface = 0;
982 if (ifitem->family == AF_INET6)
984 eps[j].flags = CA_IPV6;
985 eps[j].port = caglobals.ip.u6.port;
989 eps[j].flags = CA_IPV4;
990 eps[j].port = caglobals.ip.u4.port;
992 unsigned char *addr= (unsigned char *) &(ifitem->ipv4addr);
993 snprintf(eps[j].addr, MAX_ADDR_STR_SIZE_CA, "%d.%d.%d.%d",
994 addr[0], addr[1], addr[2], addr[3]);
1000 eps[j].adapter = CA_ADAPTER_IP;
1001 eps[j].interface = 0;
1003 if (ifitem->family == AF_INET6)
1005 eps[j].flags = CA_IPV6 | CA_SECURE;
1006 eps[j].port = caglobals.ip.u6s.port;
1010 eps[j].flags = CA_IPV4 | CA_SECURE;
1011 eps[j].port = caglobals.ip.u4s.port;
1013 unsigned char *addr= (unsigned char *) &(ifitem->ipv4addr);
1014 snprintf(eps[j].addr, MAX_ADDR_STR_SIZE_CA, "%d.%d.%d.%d",
1015 addr[0], addr[1], addr[2], addr[3]);
1024 u_arraylist_destroy(iflist);
1026 OIC_LOG(DEBUG, TAG, "OUT");
1027 return CA_STATUS_OK;