… | |
… | |
28 | #include <netinet/in.h> |
28 | #include <netinet/in.h> |
29 | #include <arpa/inet.h> |
29 | #include <arpa/inet.h> |
30 | |
30 | |
31 | #ifdef __linux |
31 | #ifdef __linux |
32 | # include <linux/icmp.h> |
32 | # include <linux/icmp.h> |
|
|
33 | #endif |
|
|
34 | #if IPV6 |
|
|
35 | # include <netinet/icmp6.h> |
33 | #endif |
36 | #endif |
34 | |
37 | |
35 | #define ICMP4_ECHO 8 |
38 | #define ICMP4_ECHO 8 |
36 | #define ICMP4_ECHO_REPLY 0 |
39 | #define ICMP4_ECHO_REPLY 0 |
37 | #define ICMP6_ECHO 128 |
40 | #define ICMP6_ECHO 128 |
… | |
… | |
100 | uint8_t dst[16]; |
103 | uint8_t dst[16]; |
101 | } IP6HDR; |
104 | } IP6HDR; |
102 | |
105 | |
103 | #define MAGIC 0xca4c |
106 | #define MAGIC 0xca4c |
104 | |
107 | |
|
|
108 | static uint16_t magic; |
|
|
109 | |
105 | typedef struct { |
110 | typedef struct { |
106 | uint8_t type, code; |
111 | uint8_t type, code; |
107 | uint16_t cksum; |
112 | uint16_t cksum; |
108 | uint16_t id, seq; |
113 | uint16_t id, seq; |
109 | uint32_t payload; |
114 | uint32_t payload; |
… | |
… | |
187 | } |
192 | } |
188 | |
193 | |
189 | //TODO: bind to source address |
194 | //TODO: bind to source address |
190 | |
195 | |
191 | pkt.code = 0; |
196 | pkt.code = 0; |
192 | pkt.id = (uint16_t)MAGIC; |
197 | pkt.id = (uint16_t)magic; |
193 | pkt.seq = (uint16_t)~MAGIC; |
198 | pkt.seq = (uint16_t)~magic; |
194 | pkt.payload = req->payload; |
199 | pkt.payload = req->payload; |
195 | |
200 | |
196 | tstamp now = NOW (); |
201 | tstamp now = NOW (); |
197 | tstamp next = now; |
202 | tstamp next = now; |
|
|
203 | |
|
|
204 | { |
|
|
205 | int r; |
|
|
206 | for (r = req->nranges; r--; ) |
|
|
207 | inc_addr (&req->ranges [r].hi); |
|
|
208 | } |
198 | |
209 | |
199 | while (req->nranges) |
210 | while (req->nranges) |
200 | { |
211 | { |
201 | RANGE *range = req->ranges; |
212 | RANGE *range = req->ranges; |
202 | |
213 | |
… | |
… | |
347 | |
358 | |
348 | if (pipe (thr_recv) < 0) |
359 | if (pipe (thr_recv) < 0) |
349 | croak ("Net::FPing: unable to create receive pipe"); |
360 | croak ("Net::FPing: unable to create receive pipe"); |
350 | |
361 | |
351 | icmp4_fd = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP); |
362 | icmp4_fd = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP); |
352 | #if IPV6 |
|
|
353 | icmp6_fd = socket (AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); |
|
|
354 | #endif |
|
|
355 | |
|
|
356 | #ifdef ICMP_FILTER |
363 | #ifdef ICMP_FILTER |
357 | { |
364 | { |
358 | struct icmp_filter oval; |
365 | struct icmp_filter oval; |
359 | oval.data = 0xffffffff & ~(1 << ICMP4_ECHO_REPLY); |
366 | oval.data = 0xffffffff & ~(1 << ICMP4_ECHO_REPLY); |
360 | setsockopt (icmp4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval); |
367 | setsockopt (icmp4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval); |
361 | } |
368 | } |
362 | #endif |
369 | #endif |
363 | |
370 | |
|
|
371 | #if IPV6 |
|
|
372 | icmp6_fd = socket (AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); |
|
|
373 | # ifdef ICMP6_FILTER |
|
|
374 | { |
|
|
375 | struct icmp6_filter oval; |
|
|
376 | ICMP6_FILTER_SETBLOCKALL (&oval); |
|
|
377 | ICMP6_FILTER_SETPASS (ICMP6_ECHO_REPLY, &oval); |
|
|
378 | setsockopt (icmp6_fd, IPPROTO_ICMPV6, ICMP6_FILTER, &oval, sizeof oval); |
|
|
379 | } |
|
|
380 | # endif |
|
|
381 | #endif |
|
|
382 | |
364 | pthread_attr_init (&attr); |
383 | pthread_attr_init (&attr); |
365 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
384 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
366 | #ifdef PTHREAD_SCOPE_PROCESS |
385 | #ifdef PTHREAD_SCOPE_PROCESS |
367 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
386 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
368 | #endif |
387 | #endif |
… | |
… | |
388 | BOOT: |
407 | BOOT: |
389 | { |
408 | { |
390 | HV *stash = gv_stashpv ("Net::FPing", 1); |
409 | HV *stash = gv_stashpv ("Net::FPing", 1); |
391 | |
410 | |
392 | cbs = get_av ("Net::FPing::CB", 1); |
411 | cbs = get_av ("Net::FPing::CB", 1); |
|
|
412 | magic = getpid () ^ MAGIC; |
393 | |
413 | |
394 | boot (); |
414 | boot (); |
395 | |
415 | |
396 | newCONSTSUB (stash, "ipv4_supported", newSViv (icmp4_fd >= 0)); |
416 | newCONSTSUB (stash, "ipv4_supported", newSViv (icmp4_fd >= 0)); |
397 | newCONSTSUB (stash, "ipv6_supported", newSViv (icmp6_fd >= 0)); |
417 | newCONSTSUB (stash, "ipv6_supported", newSViv (icmp6_fd >= 0)); |
… | |
… | |
523 | CODE: |
543 | CODE: |
524 | { |
544 | { |
525 | char buf [512]; |
545 | char buf [512]; |
526 | struct sockaddr_in sa; |
546 | struct sockaddr_in sa; |
527 | socklen_t sl = sizeof (sa); |
547 | socklen_t sl = sizeof (sa); |
528 | AV *res_av = newAV (); |
548 | AV *res_av = av_len (cbs) < 0 ? 0 : (AV *)sv_2mortal ((SV *)newAV ()); |
529 | SV *res_rv = sv_2mortal (newRV_noinc ((SV *)res_av)); |
|
|
530 | tstamp now = NOW (); |
549 | tstamp now = NOW (); |
531 | |
550 | |
532 | for (;;) |
551 | for (;;) |
533 | { |
552 | { |
534 | int len = recvfrom (icmp4_fd, buf, sizeof (buf), MSG_DONTWAIT | MSG_TRUNC, &sa, &sl); |
553 | int len = recvfrom (icmp4_fd, buf, sizeof (buf), MSG_DONTWAIT | MSG_TRUNC, &sa, &sl); |
… | |
… | |
540 | |
559 | |
541 | int hdrlen = (iphdr->version_ihl & 15) * 4; |
560 | int hdrlen = (iphdr->version_ihl & 15) * 4; |
542 | int totlen = ntohs (iphdr->tot_len); |
561 | int totlen = ntohs (iphdr->tot_len); |
543 | |
562 | |
544 | // packet corrupt? |
563 | // packet corrupt? |
|
|
564 | if (!res_av |
545 | if (totlen > len |
565 | || totlen > len |
546 | || iphdr->protocol != IPPROTO_ICMP |
566 | || iphdr->protocol != IPPROTO_ICMP |
547 | || hdrlen < HDR_SIZE_IP4 || hdrlen + sizeof (PKT) != totlen) |
567 | || hdrlen < HDR_SIZE_IP4 || hdrlen + sizeof (PKT) != totlen) |
548 | continue; |
568 | continue; |
549 | |
569 | |
550 | PKT *pkt = (PKT *)(buf + hdrlen); |
570 | PKT *pkt = (PKT *)(buf + hdrlen); |
551 | |
571 | |
552 | if (pkt->type != ICMP4_ECHO_REPLY |
572 | if (pkt->type != ICMP4_ECHO_REPLY |
553 | || pkt->id != (uint16_t) MAGIC |
573 | || pkt->id != (uint16_t) magic |
554 | || pkt->seq != (uint16_t)~MAGIC |
574 | || pkt->seq != (uint16_t)~magic |
555 | || !isnormal (pkt->stamp)) |
575 | || !isnormal (pkt->stamp)) |
556 | continue; |
576 | continue; |
557 | |
577 | |
558 | AV *av = newAV (); |
578 | AV *av = newAV (); |
559 | av_push (av, newSVpvn ((char *)&sa.sin_addr, 4)); |
579 | av_push (av, newSVpvn ((char *)&sa.sin_addr, 4)); |
… | |
… | |
561 | av_push (av, newSVuv (pkt->payload)); |
581 | av_push (av, newSVuv (pkt->payload)); |
562 | |
582 | |
563 | av_push (res_av, newRV_noinc ((SV *)av)); |
583 | av_push (res_av, newRV_noinc ((SV *)av)); |
564 | } |
584 | } |
565 | |
585 | |
|
|
586 | if (res_av) |
566 | feed_reply (res_av); |
587 | feed_reply (res_av); |
567 | } |
588 | } |
568 | |
589 | |
569 | void |
590 | void |
570 | _recv_icmp6 (...) |
591 | _recv_icmp6 (...) |
571 | CODE: |
592 | CODE: |
572 | { |
593 | { |
573 | struct sockaddr_in6 sa; |
594 | struct sockaddr_in6 sa; |
574 | socklen_t sl = sizeof (sa); |
595 | socklen_t sl = sizeof (sa); |
575 | AV *res_av = (AV *)sv_2mortal ((SV *)newAV ()); |
596 | AV *res_av = av_len (cbs) < 0 ? 0 : (AV *)sv_2mortal ((SV *)newAV ()); |
576 | PKT pkt; |
597 | PKT pkt; |
577 | tstamp now = NOW (); |
598 | tstamp now = NOW (); |
578 | |
599 | |
579 | for (;;) |
600 | for (;;) |
580 | { |
601 | { |
581 | int len = recvfrom (icmp6_fd, &pkt, sizeof (pkt), MSG_DONTWAIT | MSG_TRUNC, &sa, &sl); |
602 | int len = recvfrom (icmp6_fd, &pkt, sizeof (pkt), MSG_DONTWAIT | MSG_TRUNC, &sa, &sl); |
582 | |
603 | |
583 | if (len != sizeof (PKT)) |
604 | if (len != sizeof (PKT)) |
584 | break; |
605 | break; |
585 | |
606 | |
|
|
607 | if (!res_av |
586 | if (pkt.type != ICMP6_ECHO_REPLY |
608 | || pkt.type != ICMP6_ECHO_REPLY |
587 | || pkt.id != (uint16_t) MAGIC |
609 | || pkt.id != (uint16_t) magic |
588 | || pkt.seq != (uint16_t)~MAGIC |
610 | || pkt.seq != (uint16_t)~magic |
589 | || !isnormal (pkt.stamp)) |
611 | || !isnormal (pkt.stamp)) |
590 | continue; |
612 | continue; |
591 | |
613 | |
592 | AV *av = newAV (); |
614 | AV *av = newAV (); |
593 | av_push (av, newSVpvn ((char *)&sa.sin6_addr, 16)); |
615 | av_push (av, newSVpvn ((char *)&sa.sin6_addr, 16)); |
… | |
… | |
595 | av_push (av, newSVuv (pkt.payload)); |
617 | av_push (av, newSVuv (pkt.payload)); |
596 | |
618 | |
597 | av_push (res_av, newRV_noinc ((SV *)av)); |
619 | av_push (res_av, newRV_noinc ((SV *)av)); |
598 | } |
620 | } |
599 | |
621 | |
|
|
622 | if (res_av) |
600 | feed_reply (res_av); |
623 | feed_reply (res_av); |
601 | } |
624 | } |
602 | |
625 | |