37 int keep_capabilities = 0;
40 #ifdef HAVE_LIBSYSTEMD 41 #include <systemd/sd-daemon.h> 91 isc_boolean_t use_if_id = ISC_FALSE;
110 struct sockaddr_in
to;
117 struct stream_list *
next;
119 struct sockaddr_in6 link;
121 } *downstreams, *upstreams;
123 static struct stream_list *parse_downstream(
char *);
124 static struct stream_list *parse_upstream(
char *);
125 static void setup_streams(
void);
133 char *dhcrelay_sub_id = NULL;
137 unsigned int,
unsigned int,
struct iaddr,
142 static int find_interface_by_agent_option(
struct dhcp_packet *,
148 static void request_v4_interface(
const char* name,
int flags);
150 static const char copyright[] =
151 "Copyright 2004-2017 Internet Systems Consortium.";
152 static const char arr[] =
"All rights reserved.";
153 static const char message[] =
154 "Internet Systems Consortium DHCP Relay Agent";
155 static const char url[] =
156 "For info, please visit https://www.isc.org/software/dhcp/";
161 #define DHCRELAY_USAGE \ 162 "Usage: %s [-4] [-d] [-q] [-a] [-D]\n"\ 163 " [-A <length>] [-c <hops>] [-p <port>]\n" \ 164 " [-pf <pid-file>] [--no-pid]\n"\ 165 " [-m append|replace|forward|discard]\n" \ 166 " [-i interface0 [ ... -i interfaceN]\n" \ 167 " [-iu interface0 [ ... -iu interfaceN]\n" \ 168 " [-id interface0 [ ... -id interfaceN]\n" \ 169 " [-U interface]\n" \ 170 " server0 [ ... serverN]\n\n" \ 171 " %s -6 [-d] [-q] [-I] [-c <hops>] [-p <port>]\n" \ 172 " [-pf <pid-file>] [--no-pid]\n" \ 173 " [-s <subscriber-id>]\n" \ 174 " -l lower0 [ ... -l lowerN]\n" \ 175 " -u upper0 [ ... -u upperN]\n" \ 176 " lower (client link): [address%%]interface[#index]\n" \ 177 " upper (server link): [address%%]interface" 179 #define DHCRELAY_USAGE \ 180 "Usage: %s [-d] [-q] [-a] [-D] [-A <length>] [-c <hops>] [-p <port>]\n" \ 181 " [-pf <pid-file>] [--no-pid]\n" \ 182 " [-m append|replace|forward|discard]\n" \ 183 " [-i interface0 [ ... -i interfaceN]\n" \ 184 " [-iu interface0 [ ... -iu interfaceN]\n" \ 185 " [-id interface0 [ ... -id interfaceN]\n" \ 186 " [-U interface]\n" \ 187 " server0 [ ... serverN]\n\n" 205 static const char use_noarg[] =
"No argument for command: %s";
207 static const char use_badproto[] =
"Protocol already set, %s inappropriate";
208 static const char use_v4command[] =
"Command not used for DHCPv6: %s";
209 static const char use_v6command[] =
"Command not used for DHCPv4: %s";
213 usage(
const char *sfmt,
const char *sarg) {
216 #ifdef PRINT_SPECIFIC_CL_ERRORS 233 char *service_local = NULL, *service_remote = NULL;
234 u_int16_t port_local = 0, port_remote = 0;
239 struct stream_list *sl = NULL;
240 int local_family_set = 0;
252 fd = open(
"/dev/null", O_RDWR | O_CLOEXEC);
254 fd = open(
"/dev/null", O_RDWR | O_CLOEXEC);
256 fd = open(
"/dev/null", O_RDWR | O_CLOEXEC);
265 setlogmask(LOG_UPTO(LOG_INFO));
270 if (status != ISC_R_SUCCESS)
271 log_fatal(
"Can't initialize context: %s",
272 isc_result_totext(status));
276 if (status != ISC_R_SUCCESS)
278 isc_result_totext(status));
283 for (i = 1; i < argc; i++) {
284 if (!strcmp(argv[i],
"-4")) {
287 usage(use_badproto,
"-4");
289 local_family_set = 1;
291 }
else if (!strcmp(argv[i],
"-6")) {
293 usage(use_badproto,
"-6");
295 local_family_set = 1;
298 }
else if (!strcmp(argv[i],
"-d")) {
300 }
else if (!strcmp(argv[i],
"-q")) {
303 }
else if (!strcmp(argv[i],
"-p")) {
305 usage(use_noarg, argv[i-1]);
307 log_debug(
"binding to user-specified port %d",
309 }
else if (!strcmp(argv[i],
"-c")) {
312 usage(use_noarg, argv[i-1]);
313 hcount = atoi(argv[i]);
317 usage(
"Bad hop count to -c: %s", argv[i]);
318 }
else if (!strcmp(argv[i],
"-i")) {
321 usage(use_v4command, argv[i]);
323 local_family_set = 1;
327 usage(use_noarg, argv[i-1]);
331 }
else if (!strcmp(argv[i],
"-iu")) {
334 usage(use_v4command, argv[i]);
336 local_family_set = 1;
340 usage(use_noarg, argv[i-1]);
344 }
else if (!strcmp(argv[i],
"-id")) {
347 usage(use_v4command, argv[i]);
349 local_family_set = 1;
353 usage(use_noarg, argv[i-1]);
357 }
else if (!strcmp(argv[i],
"-a")) {
360 usage(use_v4command, argv[i]);
362 local_family_set = 1;
366 }
else if (!strcmp(argv[i],
"-A")) {
369 usage(use_v4command, argv[i]);
371 local_family_set = 1;
375 usage(use_noarg, argv[i-1]);
381 "longest possible MTU\n",
383 }
else if (!strcmp(argv[i],
"-m")) {
386 usage(use_v4command, argv[i]);
388 local_family_set = 1;
392 usage(use_noarg, argv[i-1]);
393 if (!strcasecmp(argv[i],
"append")) {
395 }
else if (!strcasecmp(argv[i],
"replace")) {
397 }
else if (!strcasecmp(argv[i],
"forward")) {
399 }
else if (!strcasecmp(argv[i],
"discard")) {
402 usage(
"Unknown argument to -m: %s", argv[i]);
403 }
else if (!strcmp(argv [i],
"-U")) {
405 usage(use_noarg, argv[i-1]);
408 usage(
"more than one uplink (-U) specified: %s" 413 status = interface_allocate(&uplink,
MDL);
414 if (status != ISC_R_SUCCESS) {
415 log_fatal(
"%s: uplink interface_allocate: %s",
416 argv[i], isc_result_totext(status));
419 if (strlen(argv[i]) >=
sizeof(uplink->
name)) {
421 " it cannot exceed: %ld characters",
422 argv[i], (
long)(
sizeof(uplink->
name) - 1));
425 uplink->
name[
sizeof(uplink->
name) - 1] = 0x00;
426 strncpy(uplink->
name, argv[i],
427 sizeof(uplink->
name) - 1);
434 }
else if (!strcmp(argv[i],
"-D")) {
437 usage(use_v4command, argv[i]);
439 local_family_set = 1;
444 }
else if (!strcmp(argv[i],
"-I")) {
446 usage(use_v6command, argv[i]);
448 local_family_set = 1;
450 use_if_id = ISC_TRUE;
451 }
else if (!strcmp(argv[i],
"-l")) {
453 usage(use_v6command, argv[i]);
455 local_family_set = 1;
457 if (downstreams != NULL)
458 use_if_id = ISC_TRUE;
460 usage(use_noarg, argv[i-1]);
461 sl = parse_downstream(argv[i]);
462 sl->next = downstreams;
464 }
else if (!strcmp(argv[i],
"-u")) {
466 usage(use_v6command, argv[i]);
468 local_family_set = 1;
471 usage(use_noarg, argv[i-1]);
472 sl = parse_upstream(argv[i]);
473 sl->next = upstreams;
475 }
else if (!strcmp(argv[i],
"-s")) {
477 usage(use_v6command, argv[i]);
479 local_family_set = 1;
482 usage(use_noarg, argv[i-1]);
483 dhcrelay_sub_id = argv[i];
485 }
else if (!strcmp(argv[i],
"-nc")) {
486 #ifdef HAVE_LIBCAP_NG 487 keep_capabilities = 1;
489 }
else if (!strcmp(argv[i],
"-pf")) {
491 usage(use_noarg, argv[i-1]);
494 }
else if (!strcmp(argv[i],
"--no-pid")) {
496 }
else if (!strcmp(argv[i],
"--version")) {
499 }
else if (!strcmp(argv[i],
"--help") ||
500 !strcmp(argv[i],
"-h")) {
507 }
else if (argv[i][0] ==
'-') {
508 usage(
"Unknown command: %s", argv[i]);
511 struct in_addr ia, *iap = NULL;
515 usage(use_v4command, argv[i]);
517 local_family_set = 1;
520 if (inet_aton(argv[i], &ia)) {
523 he = gethostbyname(argv[i]);
527 iap = ((
struct in_addr *)
539 memcpy(&sp->
to.sin_addr, iap,
sizeof *iap);
563 #ifdef HAVE_LIBCAP_NG 565 if (!keep_capabilities) {
566 capng_clear(CAPNG_SELECT_BOTH);
567 capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE|CAPNG_PERMITTED,
568 CAP_NET_RAW, CAP_NET_BIND_SERVICE, -1);
569 capng_apply(CAPNG_SELECT_BOTH);
570 log_info (
"Dropped all unnecessary capabilities.");
584 service_local =
"bootps";
585 service_remote =
"bootpc";
586 port_local = htons(67);
587 port_remote = htons(68);
591 service_local =
"dhcpv6-server";
592 service_remote =
"dhcpv6-client";
593 port_local = htons(547);
594 port_remote = htons(546);
599 ent = getservbyname(service_local,
"udp");
605 ent = getservbyname(service_remote,
"udp");
624 sp->
to.sin_family = AF_INET;
626 sp->
to.sin_len =
sizeof sp->
to;
635 if (upstreams == NULL || downstreams == NULL) {
636 log_info(
"Must specify at least one lower " 637 "and one upper interface.\n");
646 if (!option_code_hash_lookup(&requested_opts[0],
649 log_fatal(
"Unable to find the RELAY_MSG " 650 "option definition.");
652 if (!option_code_hash_lookup(&requested_opts[1],
655 log_fatal(
"Unable to find the INTERFACE_ID " 656 "option definition.");
661 gettimeofday(&
cur_tv, NULL);
679 if ((pid = fork()) < 0)
686 O_CREAT | O_TRUNC | O_WRONLY | O_CLOEXEC, 0644);
692 pf = fdopen(pfdesc,
"we");
697 fprintf(pf,
"%ld\n",(
long)getpid());
719 #if defined(ENABLE_GENTLE_SHUTDOWN) 726 #ifdef HAVE_LIBCAP_NG 728 if (!keep_capabilities) {
729 capng_clear(CAPNG_SELECT_BOTH);
730 capng_apply(CAPNG_SELECT_BOTH);
731 log_info (
"Dropped all capabilities.");
735 #ifdef HAVE_LIBSYSTEMD 737 sd_notifyf(0,
"READY=1\n" 738 "STATUS=Dispatching packets...\n" 740 (
unsigned long) getpid());
752 unsigned int length,
unsigned int from_port,
struct iaddr from,
755 struct sockaddr_in to;
760 log_info(
"Discarding packet with invalid hlen, received on " 761 "%s interface.", ip->
name);
765 log_info(
"Discarding packet received on %s interface that " 766 "has no IPv4 address assigned.", ip->
name);
772 if (packet->
giaddr.s_addr) {
800 to.sin_addr = packet->
yiaddr;
806 to.sin_addr.s_addr = htonl(INADDR_BROADCAST);
812 to.sin_family = AF_INET;
814 to.sin_len =
sizeof to;
826 strip_relay_agent_options(ip, &out, packet, length)))
830 log_error(
"Packet to bogus giaddr %s.\n",
831 inet_ntoa(packet->
giaddr));
840 log_debug(
"Forwarded BOOTREPLY for %s to %s",
843 inet_ntoa(to.sin_addr));
863 if (!(length = add_relay_agent_options(ip, packet, length,
872 if (!packet->
giaddr.s_addr)
885 &sp->
to, NULL) < 0) {
888 log_debug(
"Forwarded BOOTREQUEST for %s to %s",
891 inet_ntoa(sp->
to.sin_addr));
908 u_int8_t *op, *nextop, *sp, *max;
909 int good_agent_option = 0;
922 max = ((u_int8_t *)packet) + length;
957 nextop = op + op[1] + 2;
961 status = find_interface_by_agent_option(packet,
967 good_agent_option = 1;
977 nextop = op + op[1] + 2;
982 memmove(sp, op, op[1] + 2);
1002 if (!good_agent_option) {
1010 length = sp -((u_int8_t *)packet);
1035 find_interface_by_agent_option(
struct dhcp_packet *packet,
1037 u_int8_t *buf,
int len) {
1039 u_int8_t *circuit_id = 0;
1040 unsigned circuit_id_len = 0;
1047 i + buf[i + 1] + 2 > len) {
1054 circuit_id = &buf[i + 2];
1055 circuit_id_len = buf[i + 1];
1056 i += circuit_id_len + 2;
1060 i += buf[i + 1] + 2;
1078 !memcmp(ip->
circuit_id, circuit_id, circuit_id_len))
1100 unsigned length,
struct in_addr
giaddr) {
1101 int is_dhcp = 0, mms;
1103 u_int8_t *op, *nextop, *sp, *max, *end_pad = NULL;
1104 int adding_link_select;
1120 && (packet->
giaddr.s_addr == 0));
1123 sp = op = &packet->
options[4];
1138 if (end_pad == NULL)
1158 mms = ntohs(*(op + 2));
1161 max = ((u_int8_t *)packet) + mms;
1204 nextop = op + op[1] + 2;
1211 memmove(sp, op, op[1] + 2);
1229 if (end_pad != NULL)
1240 log_fatal(
"Circuit ID length %d out of range [1-255] on " 1246 log_fatal(
"Remote ID length %d out of range [1-255] " 1251 if (adding_link_select) {
1258 if ((optlen < 3) ||(optlen > 255))
1259 log_fatal(
"Total agent option length(%u) out of range " 1260 "[3 - 255] on %s\n", optlen, ip->
name);
1266 if (max - sp >= optlen + 3) {
1267 log_debug(
"Adding %d-byte relay agent option", optlen + 3);
1290 if (adding_link_select) {
1293 memcpy(sp, &giaddr.s_addr, 4);
1296 log_debug (
"Adding link selection suboption" 1297 " with addr: %s", inet_ntoa(giaddr));
1301 log_error(
"No room in packet (used %d of %d) " 1302 "for %d-byte relay agent option: omitted",
1303 (
int) (sp - ((u_int8_t *) packet)),
1304 (
int) (max - ((u_int8_t *) packet)),
1316 length = sp -((u_int8_t *)packet);
1331 static struct stream_list *
1332 parse_downstream(
char *arg) {
1333 struct stream_list *dp, *
up;
1335 char *ifname, *addr, *iid;
1336 isc_result_t status;
1339 (downstreams != NULL))
1340 log_fatal(
"No support for multiple interfaces.");
1343 ifname = strchr(arg,
'%');
1344 if (ifname == NULL) {
1351 iid = strchr(ifname,
'#');
1355 if (strlen(ifname) >=
sizeof(ifp->
name)) {
1356 usage(
"Interface name '%s' too long", ifname);
1360 for (dp = downstreams; dp; dp = dp->next) {
1361 if (strcmp(ifname, dp->ifp->name) == 0)
1362 log_fatal(
"Down interface '%s' declared twice.",
1367 for (up = upstreams;
up; up = up->next) {
1368 if (strcmp(ifname, up->ifp->name) == 0) {
1369 log_info(
"parse_downstream: Interface '%s' is " 1370 "both down and up.", ifname);
1378 status = interface_allocate(&ifp,
MDL);
1379 if (status != ISC_R_SUCCESS)
1381 arg, isc_result_totext(status));
1382 strcpy(ifp->
name, ifname);
1392 dp = (
struct stream_list *)
dmalloc(
sizeof(*dp),
MDL);
1402 if (addr && (inet_pton(AF_INET6, addr, &dp->link.sin6_addr) <= 0))
1403 log_fatal(
"Bad link address '%s'", addr);
1411 static struct stream_list *
1412 parse_upstream(
char *arg) {
1413 struct stream_list *
up, *dp;
1415 char *ifname, *addr;
1416 isc_result_t status;
1419 ifname = strchr(arg,
'%');
1420 if (ifname == NULL) {
1427 if (strlen(ifname) >=
sizeof(ifp->
name)) {
1428 log_fatal(
"Interface name '%s' too long", ifname);
1432 for (up = upstreams;
up; up = up->next) {
1433 if (strcmp(ifname, up->ifp->name) == 0) {
1438 for (dp = downstreams; dp; dp = dp->next) {
1439 if (strcmp(ifname, dp->ifp->name) == 0) {
1440 log_info(
"parse_upstream: Interface '%s' is " 1441 "both down and up.", ifname);
1449 status = interface_allocate(&ifp,
MDL);
1450 if (status != ISC_R_SUCCESS)
1452 arg, isc_result_totext(status));
1453 strcpy(ifp->
name, ifname);
1463 up = (
struct stream_list *)
dmalloc(
sizeof(*up),
MDL);
1469 if (inet_pton(AF_INET6, addr, &up->link.sin6_addr) <= 0)
1479 setup_streams(
void) {
1480 struct stream_list *dp, *
up;
1482 isc_boolean_t link_is_set;
1484 for (dp = downstreams; dp; dp = dp->next) {
1486 if (dp->ifp->v6address_count == 0)
1487 log_fatal(
"Interface '%s' has no IPv6 addresses.",
1491 if (IN6_IS_ADDR_UNSPECIFIED(&dp->link.sin6_addr))
1492 link_is_set = ISC_FALSE;
1494 link_is_set = ISC_TRUE;
1495 for (i = 0; i < dp->ifp->v6address_count; i++) {
1496 if (IN6_IS_ADDR_LINKLOCAL(&dp->ifp->v6addresses[i]))
1500 if (!memcmp(&dp->ifp->v6addresses[i],
1501 &dp->link.sin6_addr,
1502 sizeof(dp->link.sin6_addr)))
1505 if (i == dp->ifp->v6address_count)
1506 log_fatal(
"Interface %s does not have global IPv6 " 1507 "address assigned.", dp->ifp->name);
1509 memcpy(&dp->link.sin6_addr,
1510 &dp->ifp->v6addresses[i],
1511 sizeof(dp->link.sin6_addr));
1515 dp->id = dp->ifp->index;
1518 for (up = upstreams;
up; up = up->next) {
1520 up->link.sin6_family = AF_INET6;
1522 up->link.sin6_len =
sizeof(up->link);
1525 if (up->ifp->v6address_count == 0)
1526 log_fatal(
"Interface '%s' has no IPv6 addresses.",
1532 if (IN6_IS_ADDR_MULTICAST(&up->link.sin6_addr)) {
1541 static const int required_forw_opts[] = {
1552 process_up6(
struct packet *packet,
struct stream_list *dp) {
1553 char forw_data[65535];
1557 struct stream_list *
up;
1572 log_info(
"Relaying %s from %s port %d going up.",
1584 log_info(
"Discarding %s from %s port %d going up.",
1591 log_info(
"Unknown %d type from %s port %d going up.",
1612 if (!use_if_id && downstreams->next) {
1613 log_info(
"Shan't get back the interface.");
1629 log_fatal(
"No memory for upwards options.");
1638 }
else if (!downstreams->next) {
1639 if_id = downstreams->id;
1641 log_info(
"Don't know the interface.");
1647 NULL, (
unsigned char *) &if_id,
1658 if (dhcrelay_sub_id != NULL) {
1660 (
unsigned char *) dhcrelay_sub_id,
1661 strlen(dhcrelay_sub_id),
1672 NULL, (
unsigned char *) packet->
raw,
1682 sizeof(forw_data) - cursor,
1684 required_forw_opts, NULL);
1688 for (up = upstreams;
up; up = up->next) {
1690 (
size_t) cursor, &up->link);
1698 process_down6(
struct packet *packet) {
1699 struct stream_list *dp;
1704 struct sockaddr_in6 to;
1710 log_info(
"Discarding %s from %s port %d going down.",
1715 log_info(
"Unknown %d type from %s port %d going down.",
1723 memset(&relay_msg, 0,
sizeof(relay_msg));
1724 memset(&if_id, 0,
sizeof(if_id));
1725 memset(&to, 0,
sizeof(to));
1726 to.sin6_family = AF_INET6;
1728 to.sin6_len =
sizeof(
to);
1757 (if_id.
len !=
sizeof(
int))) {
1758 log_info(
"Can't evaluate interface-id.");
1761 memcpy(&if_index, if_id.
data,
sizeof(
int));
1762 for (dp = downstreams; dp; dp = dp->next) {
1763 if (dp->id == if_index)
1772 for (dp = downstreams; dp; dp = dp->next) {
1774 if (!memcmp(&dp->link.sin6_addr,
1776 sizeof(
struct in6_addr)))
1781 if (!dp && downstreams && !downstreams->next)
1784 log_info(
"Can't find the down interface.");
1803 log_info(
"Relaying %s to %s port %d down.",
1806 ntohs(to.sin6_port));
1819 log_info(
"Discarding %s to %s port %d down.",
1822 ntohs(to.sin6_port));
1826 log_info(
"Unknown %d type to %s port %d down.",
1829 ntohs(to.sin6_port));
1835 (
size_t) relay_msg.
len, &to);
1838 if (relay_msg.
data != NULL)
1840 if (if_id.
data != NULL)
1848 dhcpv6(
struct packet *packet) {
1849 struct stream_list *dp;
1853 process_down6(packet);
1857 for (dp = downstreams; dp; dp = dp->next) {
1860 process_up6(packet, dp);
1865 process_up6(packet, NULL);
1869 log_info(
"Can't process packet from interface '%s'.",
1896 find_class(
struct class **
class,
const char *c1,
const char *c2,
int i) {
1897 return ISC_R_NOTFOUND;
1909 return ISC_R_SUCCESS;
1930 void request_v4_interface(
const char* name,
int flags) {
1932 int len = strlen(
name);
1933 isc_result_t status;
1935 if (len >=
sizeof(tmp->
name)) {
1936 log_fatal(
"%s: interface name too long (is %d)",
name, len);
1939 status = interface_allocate(&tmp,
MDL);
1940 if (status != ISC_R_SUCCESS) {
1942 isc_result_totext(status));
1945 log_debug(
"Requesting: %s as upstream: %c downstream: %c",
name,
1951 interface_dereference(&tmp,
MDL);
void do_packet6(struct interface_info *, const char *, int, int, const struct iaddr *, isc_boolean_t)
void(* dhcpv6_packet_handler)(struct interface_info *, const char *, int, int, const struct iaddr *, isc_boolean_t)
unsigned char peer_address[16]
#define DHO_DHCP_AGENT_OPTIONS
int drop_agent_mismatches
isc_boolean_t no_dhcrelay_pid
struct tree_cache * global_options[256]
struct binding_scope * global_scope
const char * piaddr(const struct iaddr addr)
void bootp(struct packet *packet)
unsigned char options[FLEXIBLE_ARRAY_MEMBER]
void(* bootp_packet_handler)(struct interface_info *, struct dhcp_packet *, unsigned, unsigned int, struct iaddr, struct hardware *)
int check_collection(struct packet *p, struct lease *l, struct collection *c)
char * print_hw_addr(int htype, const int hlen, const unsigned char *data) const
const char * dhcpv6_type_names[]
int int int log_debug(const char *,...) __attribute__((__format__(__printf__
#define DHCPV6_RECONFIGURE
const char * path_dhcrelay_pid
isc_result_t dhcp_set_control_state(control_object_state_t oldstate, control_object_state_t newstate)
#define DHCP_CONTEXT_PRE_DB
struct in_addr * addresses
void data_string_forget(struct data_string *data, const char *file, int line)
int log_error(const char *,...) __attribute__((__format__(__printf__
#define DHCPV6_DHCPV4_QUERY
int dhcp_max_agent_option_packet_length
struct option_state * options
unsigned char dhcpv6_hop_count
unsigned char link_address[16]
unsigned char dhcpv6_msg_type
void log_fatal(const char *,...) __attribute__((__format__(__printf__
#define DHCPV6_RELAY_REPL
#define DHCPV6_LEASEQUERY
isc_boolean_t no_pid_file
struct option * requested_opts[2]
u_int16_t validate_port(char *port)
void dhcp_signal_handler(int signal)
struct server_list * next
struct interface_info * fallback_interface
int option_state_allocate(struct option_state **ptr, const char *file, int line)
isc_result_t dhcp_context_create(int flags, struct in_addr *local4, struct in6_addr *local6)
int evaluate_option_cache(struct data_string *result, struct packet *packet, struct lease *lease, struct client_state *client_state, struct option_state *in_options, struct option_state *cfg_options, struct binding_scope **scope, struct option_cache *oc, const char *file, int line)
#define DHCPV6_DHCPV4_RESPONSE
enum @28 agent_relay_mode
#define _PATH_DHCRELAY6_PID
struct interface_info * interface
ssize_t send_packet6(struct interface_info *, const unsigned char *, size_t, struct sockaddr_in6 *)
#define D6O_SUBSCRIBER_ID
int parse_allow_deny(struct option_cache **oc, struct parse *p, int i)
ssize_t send_packet(struct interface_info *, struct packet *, struct dhcp_packet *, size_t, struct in_addr, struct sockaddr_in *, struct hardware *)
#define DHCPV6_RELAY_FORW
int save_option_buffer(struct universe *universe, struct option_state *options, struct buffer *bp, unsigned char *buffer, unsigned length, unsigned code, int terminatep)
struct interface_info * uplink
struct option_cache * lookup_option(struct universe *universe, struct option_state *options, unsigned code)
int int log_info(const char *,...) __attribute__((__format__(__printf__
void * dmalloc(size_t, const char *, int)
int server_packets_relayed
struct interface_info * interfaces
void interface_snorf(struct interface_info *tmp, int ir)
void dhcp(struct packet *packet)
#define DHO_DHCP_MAX_MESSAGE_SIZE
#define DHCPV6_LEASEQUERY_REPLY
int store_options6(char *buf, int buflen, struct option_state *opt_state, struct packet *packet, const int *required_opts, struct data_string *oro)
int quiet_interface_discovery
int option_state_dereference(struct option_state **ptr, const char *file, int line)
void initialize_common_option_spaces()
void dhcpv6(struct packet *)
const int dhcpv6_type_name_max
struct interface_info * next
struct universe dhcpv6_universe
void classify(struct packet *p, struct class *c)
int supports_multiple_interfaces(struct interface_info *)
isc_result_t interface_setup()
u_int8_t hbuf[HARDWARE_ADDR_LEN+1]
#define INTERFACE_UPSTREAM
struct server_list * servers
void set_multicast_hop_limit(struct interface_info *info, int hop_limit)
#define INTERFACE_DOWNSTREAM
option_code_hash_t * code_hash
#define _PATH_DHCRELAY_PID
struct in6_addr dhcpv6_peer_address
int can_unicast_without_arp(struct interface_info *)
int add_rfc3527_suboption
const unsigned char * data
#define DHO_DHCP_MESSAGE_TYPE
int corrupt_agent_options
#define DHCPV6_INFORMATION_REQUEST
#define INTERFACE_STREAMS
struct in6_addr dhcpv6_link_address
int main(int argc, char **argv)
void discover_interfaces(int state)
#define DHCP_OPTIONS_COOKIE
#define INTERFACE_REQUESTED
int client_packets_relayed
isc_result_t omapi_init(void)
unsigned char options[DHCP_MAX_OPTION_LEN]
isc_result_t find_class(struct class **class, const char *c1, const char *c2, int i)