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 #ifndef __APPLE_USE_RFC_3542
22 #define __APPLE_USE_RFC_3542 // for PKTINFO
25 #define _GNU_SOURCE // for in6_pktinfo
28 #include <sys/types.h>
29 #if !defined(__msys_nt__)
30 #include <sys/socket.h>
33 #if defined(__msys_nt__)
42 #include <sys/types.h>
44 #if !defined(__msys_nt__)
45 #include <sys/select.h>
46 #include <arpa/inet.h>
47 #include <netinet/in.h>
52 #include <linux/netlink.h>
53 #include <linux/rtnetlink.h>
57 #include "caipinterface.h"
58 #include "caadapterutils.h"
60 #include "caadapternetdtls.h"
63 #include "oic_malloc.h"
64 #include "oic_string.h"
67 * Logging tag for module name
69 #define TAG "OIC_CA_IP_SERVER"
71 #define SELECT_TIMEOUT 1 // select() seconds (and termination latency)
73 #define IPv4_MULTICAST "224.0.1.187"
74 static struct in_addr IPv4MulticastAddress = { 0 };
76 #define IPv6_DOMAINS 16
77 #define IPv6_MULTICAST_INT "ff01::fd"
78 static struct in6_addr IPv6MulticastAddressInt;
79 #define IPv6_MULTICAST_LNK "ff02::fd"
80 static struct in6_addr IPv6MulticastAddressLnk;
81 #define IPv6_MULTICAST_RLM "ff03::fd"
82 static struct in6_addr IPv6MulticastAddressRlm;
83 #define IPv6_MULTICAST_ADM "ff04::fd"
84 static struct in6_addr IPv6MulticastAddressAdm;
85 #define IPv6_MULTICAST_SIT "ff05::fd"
86 static struct in6_addr IPv6MulticastAddressSit;
87 #define IPv6_MULTICAST_ORG "ff08::fd"
88 static struct in6_addr IPv6MulticastAddressOrg;
89 #define IPv6_MULTICAST_GLB "ff0e::fd"
90 static struct in6_addr IPv6MulticastAddressGlb;
92 static char *ipv6mcnames[IPv6_DOMAINS] = {
111 #if defined (__msys_nt__)
112 char* _caips_get_error(){
113 static char buffer[32];
114 snprintf(buffer, 32, "%i", WSAGetLastError());
117 #define CAIPS_GET_ERROR \
120 #define CAIPS_GET_ERROR \
123 static CAIPExceptionCallback g_exceptionCallback;
125 static CAIPPacketReceivedCallback g_packetReceivedCallback;
127 static void CAHandleNetlink();
128 static void CAFindReadyMessage();
129 static void CASelectReturned(fd_set *readFds, int ret);
130 static void CAProcessNewInterface(CAInterface_t *ifchanged);
131 static CAResult_t CAReceiveMessage(int fd, CATransportFlags_t flags);
133 #define SET(TYPE, FDS) \
134 if (caglobals.ip.TYPE.fd != -1) \
136 FD_SET(caglobals.ip.TYPE.fd, FDS); \
139 #define ISSET(TYPE, FDS, FLAGS) \
140 if (caglobals.ip.TYPE.fd != -1 && FD_ISSET(caglobals.ip.TYPE.fd, FDS)) \
142 fd = caglobals.ip.TYPE.fd; \
146 #define CLOSE_SOCKET(TYPE) \
147 if (caglobals.ip.TYPE.fd != -1) \
149 close(caglobals.ip.TYPE.fd); \
150 caglobals.ip.TYPE.fd = -1; \
153 void CADeInitializeIPGlobals()
164 if (caglobals.ip.netlinkFd != -1)
166 close(caglobals.ip.netlinkFd);
167 caglobals.ip.netlinkFd = -1;
171 static void CAReceiveHandler(void *data)
175 while (!caglobals.ip.terminate)
177 CAFindReadyMessage();
181 static void CAFindReadyMessage()
184 struct timeval timeout;
186 timeout.tv_sec = caglobals.ip.selectTimeout;
188 struct timeval *tv = caglobals.ip.selectTimeout == -1 ? NULL : &timeout;
200 #if !defined(__msys_nt__)
201 if (caglobals.ip.shutdownFds[0] != -1)
203 FD_SET(caglobals.ip.shutdownFds[0], &readFds);
205 if (caglobals.ip.netlinkFd != -1)
207 FD_SET(caglobals.ip.netlinkFd, &readFds);
210 int ret = select(caglobals.ip.maxfd + 1, &readFds, NULL, NULL, tv);
212 if (caglobals.ip.terminate)
214 OIC_LOG_V(DEBUG, TAG, "Packet receiver Stop request received.");
222 OIC_LOG_V(FATAL, TAG, "select error %s", CAIPS_GET_ERROR);
227 CASelectReturned(&readFds, ret);
230 static void CASelectReturned(fd_set *readFds, int ret)
234 CATransportFlags_t flags = CA_DEFAULT_FLAGS;
236 while (!caglobals.ip.terminate)
238 ISSET(u6, readFds, CA_IPV6)
239 else ISSET(u6s, readFds, CA_IPV6 | CA_SECURE)
240 else ISSET(u4, readFds, CA_IPV4)
241 else ISSET(u4s, readFds, CA_IPV4 | CA_SECURE)
242 else ISSET(m6, readFds, CA_MULTICAST | CA_IPV6)
243 else ISSET(m6s, readFds, CA_MULTICAST | CA_IPV6 | CA_SECURE)
244 else ISSET(m4, readFds, CA_MULTICAST | CA_IPV4)
245 else ISSET(m4s, readFds, CA_MULTICAST | CA_IPV4 | CA_SECURE)
246 #if !defined(__msys_nt__)
247 else if (FD_ISSET(caglobals.ip.netlinkFd, readFds))
249 CAInterface_t *ifchanged = CAFindInterfaceChange();
252 CAProcessNewInterface(ifchanged);
257 else if (FD_ISSET(caglobals.ip.shutdownFds[0], readFds))
260 ssize_t len = read(caglobals.ip.shutdownFds[0], buf, sizeof (buf));
277 (void)CAReceiveMessage(fd, flags);
282 static CAResult_t CAReceiveMessage(int fd, CATransportFlags_t flags)
284 char recvBuffer[COAP_MAX_PDU_SIZE];
287 int level, type, namelen;
288 struct sockaddr_storage srcAddr;
289 unsigned char *pktinfo = NULL;
290 #if !defined(__msys_nt__)
291 struct cmsghdr *cmp = NULL;
292 struct iovec iov = { recvBuffer, sizeof (recvBuffer) };
296 unsigned char data[CMSG_SPACE(sizeof (struct in6_pktinfo))];
301 namelen = sizeof (struct sockaddr_in6);
302 level = IPPROTO_IPV6;
304 len = sizeof (struct in6_pktinfo);
308 namelen = sizeof (struct sockaddr_in);
311 len = sizeof (struct in6_pktinfo);
314 struct msghdr msg = { .msg_name = &srcAddr,
315 .msg_namelen = namelen,
318 .msg_control = &cmsg,
319 .msg_controllen = CMSG_SPACE(len) };
321 ssize_t recvLen = recvmsg(fd, &msg, flags);
324 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
325 return CA_STATUS_FAILED;
328 if (flags & CA_MULTICAST)
330 for (cmp = CMSG_FIRSTHDR(&msg); cmp != NULL; cmp = CMSG_NXTHDR(&msg, cmp))
332 if (cmp->cmsg_level == level && cmp->cmsg_type == type)
334 pktinfo = CMSG_DATA(cmp);
338 #else // if defined(__msys_nt__)
340 #endif // !defined(__msys_nt__)
341 CASecureEndpoint_t sep = {.endpoint = {.adapter = CA_ADAPTER_IP, .flags = flags}};
345 sep.endpoint.ifindex = ((struct sockaddr_in6 *)&srcAddr)->sin6_scope_id;
346 ((struct sockaddr_in6 *)&srcAddr)->sin6_scope_id = 0;
348 if ((flags & CA_MULTICAST) && pktinfo)
350 struct in6_addr *addr = &(((struct in6_pktinfo *)pktinfo)->ipi6_addr);
351 unsigned char topbits = ((unsigned char *)addr)[0];
354 sep.endpoint.flags &= ~CA_MULTICAST;
360 if ((flags & CA_MULTICAST) && pktinfo)
362 struct in_addr *addr = &((struct in_pktinfo *)pktinfo)->ipi_addr;
363 uint32_t host = ntohl(addr->s_addr);
364 unsigned char topbits = ((unsigned char *)&host)[3];
365 if (topbits < 224 || topbits > 239)
367 sep.endpoint.flags &= ~CA_MULTICAST;
371 #if !defined(__msys_nt__)
372 CAConvertAddrToName(&srcAddr, msg.msg_namelen, sep.endpoint.addr, &sep.endpoint.port);
376 if (flags & CA_SECURE)
379 int ret = CAAdapterNetDtlsDecrypt(&sep, (uint8_t *)recvBuffer, recvLen);
380 OIC_LOG_V(DEBUG, TAG, "CAAdapterNetDtlsDecrypt returns [%d]", ret);
382 OIC_LOG(ERROR, TAG, "Encrypted message but no DTLS");
387 if (g_packetReceivedCallback)
389 g_packetReceivedCallback(&sep, recvBuffer, recvLen);
400 OIC_LOG(DEBUG, TAG, "IN");
401 OIC_LOG(DEBUG, TAG, "OUT");
404 static int CACreateSocket(int family, uint16_t *port)
406 #if !defined(__msys_nt__)
407 int socktype = SOCK_DGRAM;
409 socktype |= SOCK_CLOEXEC;
411 int fd = socket(family, socktype, IPPROTO_UDP);
414 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", strerror(errno));
419 int fl = fcntl(fd, F_GETFD);
420 if (-1 == fl || -1 == fcntl(fd, F_SETFD, fl|FD_CLOEXEC))
422 OIC_LOG_V(ERROR, TAG, "set FD_CLOEXEC failed: %s", strerror(errno));
427 #else // defined(__msys_nt__)
430 struct sockaddr_storage sa = { .ss_family = family };
433 if (family == AF_INET6)
437 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on)))
439 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", strerror(errno));
442 if (*port) // only do this for multicast ports
444 #if !defined(__msys_nt__)
445 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof (on)))
450 OIC_LOG_V(ERROR, TAG, "IPV6_RECVPKTINFO failed: %s",CAIPS_GET_ERROR);
454 ((struct sockaddr_in6 *)&sa)->sin6_port = htons(*port);
455 socklen = sizeof (struct sockaddr_in6);
459 if (*port) // only do this for multicast ports
462 if (-1 == setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &on, sizeof (on)))
464 OIC_LOG_V(ERROR, TAG, "IP_PKTINFO failed: %s", CAIPS_GET_ERROR);
468 ((struct sockaddr_in *)&sa)->sin_port = htons(*port);
469 socklen = sizeof (struct sockaddr_in);
472 if (*port) // use the given port
475 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof (on)))
477 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", CAIPS_GET_ERROR);
483 if (-1 == bind(fd, (struct sockaddr *)&sa, socklen))
485 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", CAIPS_GET_ERROR);
490 if (!*port) // return the assigned port
492 if (-1 == getsockname(fd, (struct sockaddr *)&sa, &socklen))
494 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", CAIPS_GET_ERROR);
498 *port = ntohs(family == AF_INET6 ?
499 ((struct sockaddr_in6 *)&sa)->sin6_port :
500 ((struct sockaddr_in *)&sa)->sin_port);
506 #define CHECKFD(FD) \
507 if (FD > caglobals.ip.maxfd) \
508 caglobals.ip.maxfd = FD;
509 #define NEWSOCKET(FAMILY, NAME) \
510 caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port); \
511 CHECKFD(caglobals.ip.NAME.fd)
513 static void CAInitializeNetlink()
516 // create NETLINK fd for interface change notifications
517 struct sockaddr_nl sa = { AF_NETLINK, 0, 0, RTMGRP_LINK };
519 caglobals.ip.netlinkFd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, NETLINK_ROUTE);
520 if (caglobals.ip.netlinkFd == -1)
522 OIC_LOG_V(ERROR, TAG, "netlink socket failed: %s", strerror(errno));
526 int r = bind(caglobals.ip.netlinkFd, (struct sockaddr *)&sa, sizeof (sa));
529 OIC_LOG_V(ERROR, TAG, "netlink bind failed: %s", strerror(errno));
530 close(caglobals.ip.netlinkFd);
531 caglobals.ip.netlinkFd = -1;
535 CHECKFD(caglobals.ip.netlinkFd);
541 static void CAInitializePipe()
543 #if !defined(__msys_nt__)
544 caglobals.ip.selectTimeout = -1;
546 int ret = pipe2(caglobals.ip.shutdownFds, O_CLOEXEC);
548 int ret = pipe(caglobals.ip.shutdownFds);
551 ret = fcntl(caglobals.ip.shutdownFds[0], F_GETFD);
554 ret = fcntl(caglobals.ip.shutdownFds[0], F_SETFD, ret|FD_CLOEXEC);
558 ret = fcntl(caglobals.ip.shutdownFds[1], F_GETFD);
562 ret = fcntl(caglobals.ip.shutdownFds[1], F_SETFD, ret|FD_CLOEXEC);
566 close(caglobals.ip.shutdownFds[1]);
567 close(caglobals.ip.shutdownFds[0]);
568 caglobals.ip.shutdownFds[0] = -1;
569 caglobals.ip.shutdownFds[1] = -1;
575 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
576 caglobals.ip.selectTimeout = SELECT_TIMEOUT; //poll needed for shutdown
583 CAResult_t CAIPStartServer(const ca_thread_pool_t threadPool)
585 CAResult_t res = CA_STATUS_OK;
587 if (caglobals.ip.started)
592 if (!IPv4MulticastAddress.s_addr)
594 (void)inet_pton(AF_INET, IPv4_MULTICAST, &IPv4MulticastAddress);
595 (void)inet_pton(AF_INET6, IPv6_MULTICAST_INT, &IPv6MulticastAddressInt);
596 (void)inet_pton(AF_INET6, IPv6_MULTICAST_LNK, &IPv6MulticastAddressLnk);
597 (void)inet_pton(AF_INET6, IPv6_MULTICAST_RLM, &IPv6MulticastAddressRlm);
598 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ADM, &IPv6MulticastAddressAdm);
599 (void)inet_pton(AF_INET6, IPv6_MULTICAST_SIT, &IPv6MulticastAddressSit);
600 (void)inet_pton(AF_INET6, IPv6_MULTICAST_ORG, &IPv6MulticastAddressOrg);
601 (void)inet_pton(AF_INET6, IPv6_MULTICAST_GLB, &IPv6MulticastAddressGlb);
604 if (!caglobals.ip.ipv6enabled && !caglobals.ip.ipv4enabled)
606 caglobals.ip.ipv4enabled = true; // only needed to run CA tests
609 if (caglobals.ip.ipv6enabled)
611 NEWSOCKET(AF_INET6, u6)
612 NEWSOCKET(AF_INET6, u6s)
613 NEWSOCKET(AF_INET6, m6)
614 NEWSOCKET(AF_INET6, m6s)
615 OIC_LOG_V(INFO, TAG, "IPv6 unicast port: %u", caglobals.ip.u6.port);
617 if (caglobals.ip.ipv4enabled)
619 NEWSOCKET(AF_INET, u4)
620 NEWSOCKET(AF_INET, u4s)
621 NEWSOCKET(AF_INET, m4)
622 NEWSOCKET(AF_INET, m4s)
623 OIC_LOG_V(INFO, TAG, "IPv4 unicast port: %u", caglobals.ip.u4.port);
626 OIC_LOG_V(DEBUG, TAG,
627 "socket summary: u6=%d, u6s=%d, u4=%d, u4s=%d, m6=%d, m6s=%d, m4=%d, m4s=%d",
628 caglobals.ip.u6.fd, caglobals.ip.u6s.fd, caglobals.ip.u4.fd, caglobals.ip.u4s.fd,
629 caglobals.ip.m6.fd, caglobals.ip.m6s.fd, caglobals.ip.m4.fd, caglobals.ip.m4s.fd);
631 OIC_LOG_V(DEBUG, TAG,
632 "port summary: u6 port=%d, u6s port=%d, u4 port=%d, u4s port=%d, m6 port=%d,"
633 "m6s port=%d, m4 port=%d, m4s port=%d",
634 caglobals.ip.u6.port, caglobals.ip.u6s.port, caglobals.ip.u4.port,
635 caglobals.ip.u4s.port, caglobals.ip.m6.port, caglobals.ip.m6s.port,
636 caglobals.ip.m4.port, caglobals.ip.m4s.port);
637 // create pipe for fast shutdown
639 CHECKFD(caglobals.ip.shutdownFds[0]);
640 CHECKFD(caglobals.ip.shutdownFds[1]);
642 // create source of network interface change notifications
643 CAInitializeNetlink();
645 caglobals.ip.selectTimeout = CAGetPollingInterval(caglobals.ip.selectTimeout);
647 res = CAIPStartListenServer();
648 if (CA_STATUS_OK != res)
650 OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", res);
654 caglobals.ip.terminate = false;
655 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL);
656 if (CA_STATUS_OK != res)
658 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
661 OIC_LOG(DEBUG, TAG, "CAReceiveHandler thread started successfully.");
663 caglobals.ip.started = true;
667 void CAIPStopServer()
669 caglobals.ip.started = false;
670 caglobals.ip.terminate = true;
671 #if !defined(__msys_nt__)
673 if (caglobals.ip.shutdownFds[1] != -1)
675 close(caglobals.ip.shutdownFds[1]);
676 // receive thread will stop immediately
680 // receive thread will stop in SELECT_TIMEOUT seconds.
687 void CAWakeUpForChange()
689 #if !defined(__msys_nt__)
690 if (caglobals.ip.shutdownFds[1] != -1)
695 len = write(caglobals.ip.shutdownFds[1], "w", 1);
696 } while ((len == -1) && (errno == EINTR));
697 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
699 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
707 static void applyMulticastToInterface4(struct in_addr inaddr)
709 if (!caglobals.ip.ipv4enabled)
714 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
715 .imr_address = inaddr,
717 if (setsockopt(caglobals.ip.m4.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof (mreq)))
719 if (EADDRINUSE != errno)
721 OIC_LOG_V(ERROR, TAG, "IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
724 if (setsockopt(caglobals.ip.m4s.fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof (mreq)))
726 if (EADDRINUSE != errno)
728 OIC_LOG_V(ERROR, TAG, "secure IPv4 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
733 static void applyMulticast6(int fd, struct in6_addr *addr, uint32_t ifindex)
735 struct ipv6_mreq mreq = {.ipv6mr_multiaddr = *addr, .ipv6mr_interface = ifindex};
736 if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof (mreq)))
738 if (EADDRINUSE != errno)
740 OIC_LOG_V(ERROR, TAG, "IPv6 IP_ADD_MEMBERSHIP failed: %s", CAIPS_GET_ERROR);
745 static void applyMulticastToInterface6(uint32_t ifindex)
747 if (!caglobals.ip.ipv6enabled)
751 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressInt, ifindex);
752 applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressLnk, ifindex);
753 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressRlm, ifindex);
754 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressAdm, ifindex);
755 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressSit, ifindex);
756 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressOrg, ifindex);
757 //applyMulticast6(caglobals.ip.m6.fd, &IPv6MulticastAddressGlb, ifindex);
759 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressInt, ifindex);
760 applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressLnk, ifindex);
761 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressRlm, ifindex);
762 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressAdm, ifindex);
763 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressSit, ifindex);
764 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressOrg, ifindex);
765 //applyMulticast6(caglobals.ip.m6s.fd, &IPv6MulticastAddressGlb, ifindex);
768 CAResult_t CAIPStartListenServer()
770 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
773 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
774 return CA_STATUS_FAILED;
777 uint32_t len = u_arraylist_length(iflist);
778 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
780 for (uint32_t i = 0; i < len; i++)
782 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
788 #if !defined(__msys_nt__)
789 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
791 //IFF_RUNNING is not on msys or win32
796 if (ifitem->family == AF_INET)
798 struct in_addr inaddr;
799 inaddr.s_addr = ifitem->ipv4addr;
800 applyMulticastToInterface4(inaddr);
801 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s", ifitem->name);
803 if (ifitem->family == AF_INET6)
805 applyMulticastToInterface6(ifitem->index);
806 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
810 u_arraylist_destroy(iflist);
814 CAResult_t CAIPStopListenServer()
816 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
819 OIC_LOG_V(ERROR, TAG, "Get interface info failed: %s", strerror(errno));
820 return CA_STATUS_FAILED;
823 uint32_t len = u_arraylist_length(iflist);
824 OIC_LOG_V(DEBUG, TAG, "IP network interfaces found: %d", len);
826 for (uint32_t i = 0; i < len; i++)
828 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
834 #if !defined(__msys_nt__)
835 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
837 //IFF_RUNNING is not on msys or win32
842 if (ifitem->family == AF_INET)
844 close(caglobals.ip.m4.fd);
845 close(caglobals.ip.m4s.fd);
846 caglobals.ip.m4.fd = -1;
847 caglobals.ip.m4s.fd = -1;
848 OIC_LOG_V(DEBUG, TAG, "IPv4 network interface: %s cloed", ifitem->name);
850 if (ifitem->family == AF_INET6)
852 close(caglobals.ip.m6.fd);
853 close(caglobals.ip.m6s.fd);
854 caglobals.ip.m6.fd = -1;
855 caglobals.ip.m6s.fd = -1;
856 OIC_LOG_V(DEBUG, TAG, "IPv6 network interface: %s", ifitem->name);
859 u_arraylist_destroy(iflist);
863 static void CAProcessNewInterface(CAInterface_t *ifitem)
867 OIC_LOG(DEBUG, TAG, "ifitem is null");
870 if (ifitem->family == AF_INET6)
872 applyMulticastToInterface6(ifitem->index);
874 if (ifitem->family == AF_INET)
876 struct in_addr inaddr = { .s_addr = ifitem->ipv4addr };
877 applyMulticastToInterface4(inaddr);
881 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
883 g_packetReceivedCallback = callback;
886 void CAIPSetExceptionCallback(CAIPExceptionCallback callback)
888 g_exceptionCallback = callback;
891 void CAIPSetConnectionStateChangeCallback(CAIPConnectionStateChangeCallback callback)
893 CAIPSetNetworkMonitorCallback(callback);
896 static void sendData(int fd, const CAEndpoint_t *endpoint,
897 const void *data, uint32_t dlen,
898 const char *cast, const char *fam)
900 OIC_LOG(DEBUG, TAG, "IN");
904 OIC_LOG(DEBUG, TAG, "endpoint is null");
908 char *secure = (endpoint->flags & CA_SECURE) ? "secure " : "";
909 (void)secure; // eliminates release warning
910 struct sockaddr_storage sock;
911 CAConvertNameToAddr(endpoint->addr, endpoint->port, &sock);
914 if (sock.ss_family == AF_INET6)
916 struct sockaddr_in6 *sock6 = (struct sockaddr_in6 *)&sock;
917 if (!sock6->sin6_scope_id)
919 sock6->sin6_scope_id = endpoint->ifindex;
921 socklen = sizeof(struct sockaddr_in6);
925 socklen = sizeof(struct sockaddr_in);
927 #if !defined(__msys_nt__)
928 ssize_t len = sendto(fd, data, dlen, 0, (struct sockaddr *)&sock, socklen);
931 // If logging is not defined/enabled.
934 OIC_LOG_V(ERROR, TAG, "%s%s %s sendTo failed: %s", secure, cast, fam, strerror(errno));
938 OIC_LOG_V(INFO, TAG, "%s%s %s sendTo is successful: %zd bytes", secure, cast, fam, len);
945 static void sendMulticastData6(const u_arraylist_t *iflist,
946 CAEndpoint_t *endpoint,
947 const void *data, uint32_t datalen)
951 OIC_LOG(DEBUG, TAG, "endpoint is null");
955 int scope = endpoint->flags & CA_SCOPE_MASK;
956 char *ipv6mcname = ipv6mcnames[scope];
959 OIC_LOG_V(INFO, TAG, "IPv6 multicast scope invalid: %d", scope);
962 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), ipv6mcname);
963 int fd = caglobals.ip.u6.fd;
965 uint32_t len = u_arraylist_length(iflist);
966 for (uint32_t i = 0; i < len; i++)
968 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
973 #if !defined(__msys_nt__)
974 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
981 if (ifitem->family != AF_INET6)
986 int index = ifitem->index;
987 if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &index, sizeof (index)))
989 OIC_LOG_V(ERROR, TAG, "setsockopt6 failed: %s", CAIPS_GET_ERROR);
993 sendData(fd, endpoint, data, datalen, "multicast", "ipv6");
997 static void sendMulticastData4(const u_arraylist_t *iflist,
998 CAEndpoint_t *endpoint,
999 const void *data, uint32_t datalen)
1001 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1003 struct ip_mreqn mreq = { .imr_multiaddr = IPv4MulticastAddress,
1005 OICStrcpy(endpoint->addr, sizeof(endpoint->addr), IPv4_MULTICAST);
1006 int fd = caglobals.ip.u4.fd;
1008 uint32_t len = u_arraylist_length(iflist);
1009 for (uint32_t i = 0; i < len; i++)
1011 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1016 #if !defined(__msys_nt__)
1017 if ((ifitem->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
1024 if (ifitem->family != AF_INET)
1029 struct in_addr inaddr;
1030 inaddr.s_addr = ifitem->ipv4addr;
1031 mreq.imr_address = inaddr;
1032 if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, &mreq, sizeof (mreq)))
1034 OIC_LOG_V(ERROR, TAG, "send IP_MULTICAST_IF failed: %s (using defualt)",
1037 sendData(fd, endpoint, data, datalen, "multicast", "ipv4");
1041 void CAIPSendData(CAEndpoint_t *endpoint, const void *data, uint32_t datalen,
1044 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
1045 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
1047 bool isSecure = (endpoint->flags & CA_SECURE) != 0;
1051 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1053 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1056 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1060 if ((endpoint->flags & CA_IPV6) && caglobals.ip.ipv6enabled)
1062 sendMulticastData6(iflist, endpoint, data, datalen);
1064 if ((endpoint->flags & CA_IPV4) && caglobals.ip.ipv4enabled)
1066 sendMulticastData4(iflist, endpoint, data, datalen);
1069 u_arraylist_destroy(iflist);
1073 if (!endpoint->port) // unicast discovery
1075 endpoint->port = isSecure ? CA_SECURE_COAP : CA_COAP;
1079 if (caglobals.ip.ipv6enabled && (endpoint->flags & CA_IPV6))
1081 fd = isSecure ? caglobals.ip.u6s.fd : caglobals.ip.u6.fd;
1082 #ifndef __WITH_DTLS__
1083 fd = caglobals.ip.u6.fd;
1085 sendData(fd, endpoint, data, datalen, "unicast", "ipv6");
1087 if (caglobals.ip.ipv4enabled && (endpoint->flags & CA_IPV4))
1089 fd = isSecure ? caglobals.ip.u4s.fd : caglobals.ip.u4.fd;
1090 #ifndef __WITH_DTLS__
1091 fd = caglobals.ip.u4.fd;
1093 sendData(fd, endpoint, data, datalen, "unicast", "ipv4");
1098 CAResult_t CAGetIPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
1100 VERIFY_NON_NULL(info, TAG, "info is NULL");
1101 VERIFY_NON_NULL(size, TAG, "size is NULL");
1103 u_arraylist_t *iflist = CAIPGetInterfaceInformation(0);
1106 OIC_LOG_V(ERROR, TAG, "get interface info failed: %s", strerror(errno));
1107 return CA_STATUS_FAILED;
1110 uint32_t len = u_arraylist_length(iflist);
1111 uint32_t length = len;
1113 #ifdef __WITH_DTLS__
1114 //If DTLS is supported, each interface can support secure port as well
1118 CAEndpoint_t *eps = (CAEndpoint_t *)OICCalloc(length, sizeof (CAEndpoint_t));
1121 OIC_LOG(ERROR, TAG, "Malloc Failed");
1122 u_arraylist_destroy(iflist);
1123 return CA_MEMORY_ALLOC_FAILED;
1126 for (uint32_t i = 0, j = 0; i < len; i++)
1128 CAInterface_t *ifitem = (CAInterface_t *)u_arraylist_get(iflist, i);
1134 eps[j].adapter = CA_ADAPTER_IP;
1137 if (ifitem->family == AF_INET6)
1139 eps[j].flags = CA_IPV6;
1140 eps[j].port = caglobals.ip.u6.port;
1144 eps[j].flags = CA_IPV4;
1145 eps[j].port = caglobals.ip.u4.port;
1147 inet_ntop(AF_INET, &(ifitem->ipv4addr), eps[j].addr, MAX_ADDR_STR_SIZE_CA);
1150 #ifdef __WITH_DTLS__
1153 eps[j].adapter = CA_ADAPTER_IP;
1156 if (ifitem->family == AF_INET6)
1158 eps[j].flags = CA_IPV6 | CA_SECURE;
1159 eps[j].port = caglobals.ip.u6s.port;
1163 eps[j].flags = CA_IPV4 | CA_SECURE;
1164 eps[j].port = caglobals.ip.u4s.port;
1165 inet_ntop(AF_INET, &(ifitem->ipv4addr), eps[j].addr, MAX_ADDR_STR_SIZE_CA);
1174 u_arraylist_destroy(iflist);
1176 return CA_STATUS_OK;