… | |
… | |
228 | #endif |
228 | #endif |
229 | |
229 | |
230 | #if ENABLE_DNS |
230 | #if ENABLE_DNS |
231 | if (THISNODE->protocols & PROT_DNSv4) |
231 | if (THISNODE->protocols & PROT_DNSv4) |
232 | { |
232 | { |
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233 | dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4); |
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234 | |
233 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
235 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
234 | |
236 | |
235 | if (dnsv4_fd < 0) |
237 | if (dnsv4_fd < 0) |
236 | return -1; |
238 | return -1; |
237 | |
239 | |
238 | // standard daemon practise... |
240 | // standard daemon practise... |
239 | { |
241 | { |
240 | int oval = 1; |
242 | int oval = 1; |
241 | setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
243 | setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
242 | } |
244 | } |
243 | |
245 | |
244 | sockinfo si (THISNODE, PROT_DNSv4); |
246 | sockinfo si (THISNODE->dns_hostname, |
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247 | THISNODE->dns_hostname ? THISNODE->dns_port : 0, |
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248 | PROT_DNSv4); |
245 | |
249 | |
246 | if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ())) |
250 | if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ())) |
247 | { |
251 | { |
248 | slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno)); |
252 | slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno)); |
249 | exit (EXIT_FAILURE); |
253 | exit (EXIT_FAILURE); |
… | |
… | |
393 | else |
397 | else |
394 | c->recv_vpn_packet (pkt, rsi); |
398 | c->recv_vpn_packet (pkt, rsi); |
395 | } |
399 | } |
396 | } |
400 | } |
397 | |
401 | |
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402 | bool |
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403 | vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
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|
404 | { |
|
|
405 | switch (si.prot) |
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|
406 | { |
|
|
407 | case PROT_IPv4: |
|
|
408 | return send_ipv4_packet (pkt, si, tos); |
|
|
409 | case PROT_UDPv4: |
|
|
410 | return send_udpv4_packet (pkt, si, tos); |
|
|
411 | #if ENABLE_TCP |
|
|
412 | case PROT_TCPv4: |
|
|
413 | return send_tcpv4_packet (pkt, si, tos); |
|
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414 | #endif |
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|
415 | #if ENABLE_ICMP |
|
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416 | case PROT_ICMPv4: |
|
|
417 | return send_icmpv4_packet (pkt, si, tos); |
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418 | #endif |
|
|
419 | #if ENABLE_DNS |
|
|
420 | case PROT_DNSv4: |
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|
421 | return send_dnsv4_packet (pkt, si, tos); |
|
|
422 | #endif |
|
|
423 | |
|
|
424 | default: |
|
|
425 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
|
|
426 | } |
|
|
427 | |
|
|
428 | return false; |
|
|
429 | } |
|
|
430 | |
398 | void |
431 | void |
399 | vpn::ipv4_ev (io_watcher &w, short revents) |
432 | vpn::ipv4_ev (io_watcher &w, short revents) |
400 | { |
433 | { |
401 | if (revents & EVENT_READ) |
434 | if (revents & EVENT_READ) |
402 | { |
435 | { |
… | |
… | |
411 | |
444 | |
412 | if (len > 0) |
445 | if (len > 0) |
413 | { |
446 | { |
414 | pkt->len = len; |
447 | pkt->len = len; |
415 | |
448 | |
416 | // raw sockets deliver the ipv4, but don't expect it on sends |
449 | // raw sockets deliver the ipv4 header, but don't expect it on sends |
417 | // this is slow, but... |
|
|
418 | pkt->skip_hdr (IP_OVERHEAD); |
450 | pkt->skip_hdr (IP_OVERHEAD); |
419 | |
451 | |
420 | recv_vpn_packet (pkt, si); |
452 | recv_vpn_packet (pkt, si); |
421 | } |
453 | } |
422 | else |
454 | else |
… | |
… | |
428 | delete pkt; |
460 | delete pkt; |
429 | } |
461 | } |
430 | else |
462 | else |
431 | { |
463 | { |
432 | slog (L_ERR, |
464 | slog (L_ERR, |
433 | _("FATAL: unknown revents %08x in socket, terminating\n"), |
465 | _("FATAL: unknown revents %08x in socket, terminating\n"), |
434 | revents); |
466 | revents); |
435 | exit (EXIT_FAILURE); |
467 | exit (EXIT_FAILURE); |
436 | } |
468 | } |
437 | } |
469 | } |
438 | |
470 | |
439 | #if ENABLE_ICMP |
471 | #if ENABLE_ICMP |
… | |
… | |
540 | int dst = mac2id (pkt->dst); |
572 | int dst = mac2id (pkt->dst); |
541 | int src = mac2id (pkt->src); |
573 | int src = mac2id (pkt->src); |
542 | |
574 | |
543 | if (src != THISNODE->id) |
575 | if (src != THISNODE->id) |
544 | { |
576 | { |
545 | slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting.")); |
577 | slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting.")); |
546 | exit (EXIT_FAILURE); |
578 | exit (EXIT_FAILURE); |
547 | } |
579 | } |
548 | |
580 | |
549 | if (dst == THISNODE->id) |
581 | if (dst == THISNODE->id) |
550 | { |
582 | { |