39 #include <sys/ioctl.h> 43 #if defined(sun) && defined(USE_V4_PKTINFO) 44 #include <sys/sysmacros.h> 46 #include <sys/sockio.h> 47 #include <net/if_dl.h> 51 #ifdef USE_SOCKET_FALLBACK 52 # if !defined (USE_SOCKET_SEND) 53 # define if_register_send if_register_fallback 54 # define send_packet send_fallback 55 # define if_reinitialize_send if_reinitialize_fallback 64 static int no_global_v6_socket = 0;
65 static unsigned int global_v6_socket_references = 0;
66 static int global_v6_socket = -1;
76 #if defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && defined(USE_V4_PKTINFO) 77 static unsigned int global_v4_socket_references = 0;
78 static int global_v4_socket = -1;
86 #if !defined(SO_BINDTODEVICE) && !defined(USE_FALLBACK) 93 #if defined (USE_SOCKET_SEND) || defined (USE_SOCKET_FALLBACK) 98 #ifndef USE_SOCKET_RECEIVE 107 #ifdef USE_SOCKET_RECEIVE 119 #if defined (USE_SOCKET_SEND) || \ 120 defined (USE_SOCKET_RECEIVE) || \ 121 defined (USE_SOCKET_FALLBACK) 125 int *do_multicast,
struct in6_addr *linklocal6)
127 struct sockaddr_storage name;
133 struct sockaddr_in6 *addr6;
135 struct sockaddr_in *addr;
139 #if !defined(SO_BINDTODEVICE) && !defined(USE_FALLBACK) 142 log_fatal (
"The standard socket API can only support %s",
143 "hosts with a single network interface.");
152 memset(&name, 0,
sizeof(name));
156 addr6 = (
struct sockaddr_in6 *)&name;
157 addr6->sin6_family = AF_INET6;
160 memcpy(&addr6->sin6_addr,
162 sizeof(addr6->sin6_addr));
163 addr6->sin6_scope_id = if_nametoindex(info->
name);
166 addr6->sin6_len =
sizeof(*addr6);
168 name_len =
sizeof(*addr6);
178 addr = (
struct sockaddr_in *)&name;
179 addr->sin_family = AF_INET;
181 memcpy(&addr->sin_addr,
183 sizeof(addr->sin_addr));
185 addr->sin_len =
sizeof(*addr);
187 name_len =
sizeof(*addr);
193 sock = socket(domain, SOCK_DGRAM, IPPROTO_UDP);
195 log_fatal(
"Can't create dhcp socket: %m");
201 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
202 (
char *)&flag,
sizeof(flag)) < 0) {
203 log_fatal(
"Can't set SO_REUSEADDR option on dhcp socket: %m");
210 (setsockopt(sock, SOL_SOCKET, SO_BROADCAST,
211 (
char *)&flag,
sizeof(flag)) < 0)) {
212 log_fatal(
"Can't set SO_BROADCAST option on dhcp socket: %m");
215 #if defined(DHCPv6) && defined(SO_REUSEPORT) 227 if ((setsockopt(sock, SOL_SOCKET, SO_REUSEPORT,
228 (
char *)&flag,
sizeof(flag)) < 0) &&
229 (errno != ENOPROTOOPT)) {
230 log_fatal(
"Can't set SO_REUSEPORT option on dhcp " 237 if (bind(sock, (
struct sockaddr *)&name, name_len) < 0) {
238 log_error(
"Can't bind to dhcp address: %m");
239 log_error(
"Please make sure there is no other dhcp server");
240 log_error(
"running and that there's no entry for dhcp or");
241 log_error(
"bootp in /etc/inetd.conf. Also make sure you");
242 log_error(
"are not running HP JetAdmin software, which");
246 #if defined(SO_BINDTODEVICE) 249 setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE,
250 (
char *)(info -> ifp),
sizeof(*(info -> ifp))) < 0) {
251 log_fatal(
"setsockopt: SO_BINDTODEVICE: %m");
262 #if defined(SCO) && defined(IP_BROADCAST_IF) 264 setsockopt(sock, IPPROTO_IP, IP_BROADCAST_IF, &info->
addresses[0],
266 log_fatal(
"Can't set IP_BROADCAST_IF on dhcp socket: %m");
269 #if defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && defined(USE_V4_PKTINFO) 274 if (family == AF_INET) {
276 if (setsockopt(sock, IPPROTO_IP, IP_RECVPKTINFO,
277 &on,
sizeof(on)) != 0) {
278 log_fatal(
"setsockopt: IPV_RECVPKTINFO: %m");
289 if (family == AF_INET6) {
291 #ifdef IPV6_RECVPKTINFO 293 if (setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO,
294 &on,
sizeof(on)) != 0) {
295 log_fatal(
"setsockopt: IPV6_RECVPKTINFO: %m");
299 if (setsockopt(sock, IPPROTO_IPV6, IPV6_PKTINFO,
300 &on,
sizeof(on)) != 0) {
301 log_fatal(
"setsockopt: IPV6_PKTINFO: %m");
313 if (setsockopt(info->
wfdesc, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
314 &hop_limit,
sizeof(
int)) < 0) {
315 log_fatal(
"setMulticaseHopLimit: IPV6_MULTICAST_HOPS: %m");
318 log_debug(
"Setting hop count limit to %d for interface %s",
319 hop_limit, info->
name);
326 #if defined (USE_SOCKET_SEND) || defined (USE_SOCKET_FALLBACK) 330 #ifndef USE_SOCKET_RECEIVE 333 if (strcmp(info->
name,
"fallback") != 0)
335 #if defined (USE_SOCKET_FALLBACK) 344 log_info (
"Sending on Socket/%s%s%s",
351 #if defined (USE_SOCKET_SEND) 355 #ifndef USE_SOCKET_RECEIVE 361 log_info (
"Disabling output on Socket/%s%s%s",
370 #ifdef USE_SOCKET_RECEIVE 375 #if defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && defined(USE_V4_PKTINFO) 376 if (global_v4_socket_references == 0) {
378 if (global_v4_socket < 0) {
383 log_fatal(
"Failed to create AF_INET socket %s:%d",
388 info->
rfdesc = global_v4_socket;
389 global_v4_socket_references++;
396 if (strcmp(info->
name,
"fallback") != 0)
400 log_info (
"Listening on Socket/%s%s%s",
410 #if defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && defined(USE_V4_PKTINFO) 412 if ((info->
rfdesc == global_v4_socket) &&
413 (info->
wfdesc == global_v4_socket) &&
414 (global_v4_socket_references > 0)) {
415 global_v4_socket_references--;
421 if (global_v4_socket_references == 0) {
422 close(global_v4_socket);
423 global_v4_socket = -1;
430 log_info (
"Disabling input on Socket/%s%s%s",
447 struct ipv6_mreq mreq;
450 &mreq.ipv6mr_multiaddr) <= 0) {
451 log_fatal(
"inet_pton: unable to convert '%s'",
454 mreq.ipv6mr_interface = if_nametoindex(info->
name);
455 if (setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP,
456 &mreq,
sizeof(mreq)) < 0) {
457 log_fatal(
"setsockopt: IPV6_JOIN_GROUP: %m");
469 &mreq.ipv6mr_multiaddr) <= 0) {
470 log_fatal(
"inet_pton: unable to convert '%s'",
473 mreq.ipv6mr_interface = if_nametoindex(info->
name);
474 if (setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP,
475 &mreq,
sizeof(mreq)) < 0) {
476 log_fatal(
"setsockopt: IPV6_JOIN_GROUP: %m");
484 int req_multi = do_multicast;
486 if (no_global_v6_socket) {
490 if (global_v6_socket_references == 0) {
493 if (global_v6_socket < 0) {
504 info->
rfdesc = global_v6_socket;
505 info->
wfdesc = global_v6_socket;
506 global_v6_socket_references++;
509 if_register_multicast(info);
515 log_info(
"Listening on Socket/%d/%s/%s",
516 global_v6_socket, info->
name,
518 log_info(
"Sending on Socket/%d/%s/%s",
519 global_v6_socket, info->
name,
538 struct in6_addr *addr6 = NULL;
541 if (global_v6_socket >= 0) {
545 no_global_v6_socket = 1;
550 if (IN6_IS_ADDR_LINKLOCAL(addr6))
571 log_info(
"Listening on Socket/%d/%s/%s",
572 global_v6_socket, info->
name,
574 log_info(
"Sending on Socket/%d/%s/%s",
575 global_v6_socket, info->
name,
587 if (no_global_v6_socket) {
591 }
else if ((info->
rfdesc == global_v6_socket) &&
592 (info->
wfdesc == global_v6_socket) &&
593 (global_v6_socket_references > 0)) {
595 global_v6_socket_references--;
606 log_info(
"Disabling output on Socket/%s/%s", info->
name,
614 if (!no_global_v6_socket &&
615 (global_v6_socket_references == 0)) {
616 close(global_v6_socket);
617 global_v6_socket = -1;
624 #if defined (USE_SOCKET_SEND) || defined (USE_SOCKET_FALLBACK) 631 struct sockaddr_in *to;
635 #ifdef IGNORE_HOSTUNREACH 639 #if defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && defined(USE_V4_PKTINFO) 640 struct in_pktinfo pktinfo;
642 if (interface->
ifp != NULL) {
643 memset(&pktinfo, 0,
sizeof (pktinfo));
644 pktinfo.ipi_ifindex = interface->
ifp->ifr_index;
645 if (setsockopt(interface->
wfdesc, IPPROTO_IP,
646 IP_PKTINFO, (
char *)&pktinfo,
647 sizeof(pktinfo)) < 0)
651 result = sendto (interface -> wfdesc, (
char *)raw, len, 0,
652 (
struct sockaddr *)to,
sizeof *to);
653 #ifdef IGNORE_HOSTUNREACH 654 }
while (to -> sin_addr.s_addr == htonl (INADDR_BROADCAST) &&
656 (errno == EHOSTUNREACH ||
657 errno == ECONNREFUSED) &&
662 if (errno == ENETUNREACH)
663 log_error (
"send_packet: please consult README file%s",
664 " regarding broadcast address.");
678 static size_t CMSG_LEN(
size_t len) {
684 hdrlen = (size_t)CMSG_DATA(((
struct cmsghdr *)NULL));
690 static size_t CMSG_SPACE(
size_t len) {
692 struct cmsghdr *cmsgp;
699 struct cmsghdr cmsg_sizer;
700 u_int8_t pktinfo_sizer[
sizeof(
struct cmsghdr) + 1024];
703 memset(&msg, 0,
sizeof(msg));
704 msg.msg_control = &dummybuf;
705 msg.msg_controllen =
sizeof(dummybuf);
707 cmsgp = (
struct cmsghdr *)&dummybuf;
708 cmsgp->cmsg_len = CMSG_LEN(len);
710 cmsgp = CMSG_NXTHDR(&msg, cmsgp);
712 return (
char *)cmsgp - (
char *)msg.msg_control;
721 #if defined(DHCPv6) || \ 722 (defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && \ 723 defined(USE_V4_PKTINFO)) 731 static void *control_buf = NULL;
732 static size_t control_buf_len = 0;
735 allocate_cmsg_cbuf(
void) {
736 control_buf_len = CMSG_SPACE(
sizeof(
struct in6_pktinfo));
763 const unsigned char *raw,
size_t len,
764 struct sockaddr_in6 *to) {
767 struct sockaddr_in6 dst;
769 struct in6_pktinfo *pktinfo;
770 struct cmsghdr *cmsg;
771 unsigned int ifindex;
778 if (control_buf == NULL) {
779 allocate_cmsg_cbuf();
780 if (control_buf == NULL) {
781 log_error(
"send_packet6: unable to allocate cmsg header");
785 memset(control_buf, 0, control_buf_len);
790 memset(&m, 0,
sizeof(m));
796 memcpy(&dst, to,
sizeof(dst));
798 m.msg_namelen =
sizeof(dst);
799 ifindex = if_nametoindex(interface->
name);
800 if (no_global_v6_socket)
801 dst.sin6_scope_id = ifindex;
808 v.iov_base = (
char *)raw;
821 m.msg_control = control_buf;
822 m.msg_controllen = control_buf_len;
823 cmsg = CMSG_FIRSTHDR(&m);
824 INSIST(cmsg != NULL);
825 cmsg->cmsg_level = IPPROTO_IPV6;
826 cmsg->cmsg_type = IPV6_PKTINFO;
827 cmsg->cmsg_len = CMSG_LEN(
sizeof(*pktinfo));
828 pktinfo = (
struct in6_pktinfo *)CMSG_DATA(cmsg);
829 memset(pktinfo, 0,
sizeof(*pktinfo));
830 pktinfo->ipi6_ifindex = ifindex;
832 result = sendmsg(interface->
wfdesc, &m, 0);
840 #ifdef USE_SOCKET_RECEIVE 845 struct sockaddr_in *from;
848 #if !(defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && defined(USE_V4_PKTINFO)) 858 memset(hfrom, 0,
sizeof(*hfrom));
860 #ifdef IGNORE_HOSTUNREACH 865 #if defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && defined(USE_V4_PKTINFO) 868 struct cmsghdr *cmsg;
869 struct in_pktinfo *pktinfo;
870 unsigned int ifindex;
876 if (control_buf == NULL) {
877 allocate_cmsg_cbuf();
878 if (control_buf == NULL) {
879 log_error(
"receive_packet: unable to allocate cmsg " 884 memset(control_buf, 0, control_buf_len);
889 memset(&m, 0,
sizeof(m));
895 m.msg_namelen =
sizeof(*from);
915 m.msg_control = control_buf;
916 m.msg_controllen = control_buf_len;
918 result = recvmsg(interface->
rfdesc, &m, 0);
926 cmsg = CMSG_FIRSTHDR(&m);
927 while (cmsg != NULL) {
928 if ((cmsg->cmsg_level == IPPROTO_IP) &&
929 (cmsg->cmsg_type == IP_PKTINFO)) {
930 pktinfo = (
struct in_pktinfo *)CMSG_DATA(cmsg);
931 ifindex = pktinfo->ipi_ifindex;
938 memcpy(hfrom->
hbuf, &ifindex,
sizeof(ifindex));
941 cmsg = CMSG_NXTHDR(&m, cmsg);
952 result = recvfrom(interface -> rfdesc, (
char *)buf, len, 0,
953 (
struct sockaddr *)from, &flen);
955 #ifdef IGNORE_HOSTUNREACH 956 }
while (result < 0 &&
957 (errno == EHOSTUNREACH ||
958 errno == ECONNREFUSED) &&
969 unsigned char *buf,
size_t len,
970 struct sockaddr_in6 *from,
struct in6_addr *to_addr,
971 unsigned int *if_idx)
976 struct cmsghdr *cmsg;
977 struct in6_pktinfo *pktinfo;
983 if (control_buf == NULL) {
984 allocate_cmsg_cbuf();
985 if (control_buf == NULL) {
986 log_error(
"receive_packet6: unable to allocate cmsg " 991 memset(control_buf, 0, control_buf_len);
996 memset(&m, 0,
sizeof(m));
1002 m.msg_namelen =
sizeof(*from);
1022 m.msg_control = control_buf;
1023 m.msg_controllen = control_buf_len;
1025 result = recvmsg(interface->
rfdesc, &m, 0);
1033 cmsg = CMSG_FIRSTHDR(&m);
1034 while (cmsg != NULL) {
1035 if ((cmsg->cmsg_level == IPPROTO_IPV6) &&
1036 (cmsg->cmsg_type == IPV6_PKTINFO)) {
1037 pktinfo = (
struct in6_pktinfo *)CMSG_DATA(cmsg);
1038 *to_addr = pktinfo->ipi6_addr;
1039 *if_idx = pktinfo->ipi6_ifindex;
1043 cmsg = CMSG_NXTHDR(&m, cmsg);
1058 #if defined (USE_SOCKET_FALLBACK) 1065 struct sockaddr_in from;
1074 status = recvfrom (interface -> wfdesc, buf,
sizeof buf, 0,
1075 (
struct sockaddr *)&from, &flen);
1080 return ISC_R_UNEXPECTED;
1086 return ISC_R_SUCCESS;
1090 #if defined (USE_SOCKET_SEND) 1100 #if defined (SOCKET_CAN_RECEIVE_UNICAST_UNCONFIGURED) 1110 #if defined(SO_BINDTODEVICE) || \ 1111 (defined(IP_PKTINFO) && defined(IP_RECVPKTINFO) && \ 1112 defined(USE_V4_PKTINFO)) 1124 #if defined (USE_SOCKET_FALLBACK) 1125 isc_result_t status;
1130 log_info (
"Sending on Socket/%s%s%s",
1139 if (status != ISC_R_SUCCESS)
1140 log_fatal (
"Can't register I/O handle for %s: %s",
1141 fbi -> name, isc_result_totext (status));
1142 interface_dereference (&fbi,
MDL);
1148 #if defined(sun) && defined(USE_V4_PKTINFO) 1152 struct sockaddr_dl *dladdrp;
1156 memset(&lifr, 0,
sizeof (lifr));
1157 (void) strlcpy(lifr.lifr_name, name, sizeof (lifr.lifr_name));
1162 if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ||
1171 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) >= 0 &&
1178 log_fatal(
"Couldn't get interface flags for %s: %m", name);
1183 if (lifr.lifr_flags & (IFF_VIRTUAL|IFF_IPMP)) {
1185 srandom((
long)gethrtime());
1188 for (i = 1; i < hw->
hlen; ++i) {
1189 hw->
hbuf[i] = random() % 256;
1197 if (ioctl(sock, SIOCGLIFHWADDR, &lifr) < 0)
1198 log_fatal(
"Couldn't get interface hardware address for %s: %m",
1200 dladdrp = (
struct sockaddr_dl *)&lifr.lifr_addr;
1201 hw->
hlen = dladdrp->sdl_alen+1;
1202 switch (dladdrp->sdl_type) {
1217 log_fatal(
"%s: unsupported DLPI MAC type %lu", name,
1218 (
unsigned long)dladdrp->sdl_type);
1221 memcpy(hw->
hbuf+1, LLADDR(dladdrp), hw->
hlen-1);
void if_register_send(struct interface_info *)
isc_result_t omapi_register_io_object(omapi_object_t *, int(*)(omapi_object_t *), int(*)(omapi_object_t *), isc_result_t(*)(omapi_object_t *), isc_result_t(*)(omapi_object_t *), isc_result_t(*)(omapi_object_t *))
struct shared_network * shared_network
int if_readsocket(omapi_object_t *h)
void if_reinitialize_send(struct interface_info *)
#define All_DHCP_Relay_Agents_and_Servers
#define DHCP_R_INVALIDARG
int int int log_debug(const char *,...) __attribute__((__format__(__printf__
int can_receive_unicast_unconfigured(struct interface_info *)
struct in_addr * addresses
int setup_fallback(struct interface_info **fp, const char *file, int line)
int log_error(const char *,...) __attribute__((__format__(__printf__
void if_deregister_receive(struct interface_info *)
void get_hw_addr(struct interface_info *info)
void maybe_setup_fallback(void)
void if_deregister_send(struct interface_info *)
void log_fatal(const char *,...) __attribute__((__format__(__printf__
void if_deregister6(struct interface_info *info)
void if_register_linklocal6(struct interface_info *info)
ssize_t send_packet6(struct interface_info *, const unsigned char *, size_t, struct sockaddr_in6 *)
ssize_t send_packet(struct interface_info *, struct packet *, struct dhcp_packet *, size_t, struct in_addr, struct sockaddr_in *, struct hardware *)
omapi_object_type_t * dhcp_type_interface
int int log_info(const char *,...) __attribute__((__format__(__printf__
void * dmalloc(size_t, const char *, int)
void if_register6(struct interface_info *info, int do_multicast)
int quiet_interface_discovery
int supports_multiple_interfaces(struct interface_info *)
u_int8_t hbuf[HARDWARE_ADDR_LEN+1]
#define INTERFACE_UPSTREAM
void set_multicast_hop_limit(struct interface_info *info, int hop_limit)
struct in_addr local_address
ssize_t receive_packet(struct interface_info *, unsigned char *, size_t, struct sockaddr_in *, struct hardware *)
void if_reinitialize_receive(struct interface_info *)
int can_unicast_without_arp(struct interface_info *)
void if_register_receive(struct interface_info *)
isc_result_t fallback_discard(omapi_object_t *)
#define INTERFACE_STREAMS
int if_register_socket(struct interface_info *, int, int *, struct in6_addr *)
ssize_t receive_packet6(struct interface_info *interface, unsigned char *buf, size_t len, struct sockaddr_in6 *from, struct in6_addr *to_addr, unsigned int *if_index)
struct in6_addr * v6addresses