1 | #if defined(__linux) |
1 | #if defined(__linux) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__CYGWIN__) |
2 | # define ENABLE_IPV6 1 // if you get compilation problems try to disable IPv6 |
2 | # define ENABLE_IPV6 1 // if you get compilation problems try to disable IPv6 |
3 | #else |
3 | #else |
4 | # define ENABLE_IPV6 0 |
4 | # define ENABLE_IPV6 0 |
5 | #endif |
5 | #endif |
6 | |
6 | |
… | |
… | |
30 | #include <arpa/inet.h> |
30 | #include <arpa/inet.h> |
31 | |
31 | |
32 | #ifdef __linux |
32 | #ifdef __linux |
33 | # include <linux/icmp.h> |
33 | # include <linux/icmp.h> |
34 | #endif |
34 | #endif |
35 | #if ENABLE_IPV6 |
35 | #if ENABLE_IPV6 && !defined (__CYGWIN__) |
36 | # include <netinet/icmp6.h> |
36 | # include <netinet/icmp6.h> |
37 | #endif |
37 | #endif |
38 | |
38 | |
39 | #define ICMP4_ECHO 8 |
39 | #define ICMP4_ECHO 8 |
40 | #define ICMP4_ECHO_REPLY 0 |
40 | #define ICMP4_ECHO_REPLY 0 |
… | |
… | |
47 | #define HDR_SIZE_IP4 20 |
47 | #define HDR_SIZE_IP4 20 |
48 | #define HDR_SIZE_IP6 48 |
48 | #define HDR_SIZE_IP6 48 |
49 | |
49 | |
50 | //TODO: xread/xwrite for atomicity? we currently rely on the fact that the pip buffersize divides exactly by pointer sizes |
50 | //TODO: xread/xwrite for atomicity? we currently rely on the fact that the pip buffersize divides exactly by pointer sizes |
51 | |
51 | |
52 | typedef uint8_t addr_t[16]; |
52 | typedef uint8_t addr_tt[16]; |
53 | |
53 | |
54 | typedef double tstamp; |
54 | typedef double tstamp; |
55 | |
55 | |
56 | static tstamp |
56 | static tstamp |
57 | NOW (void) |
57 | NOW (void) |
… | |
… | |
59 | struct timeval tv; |
59 | struct timeval tv; |
60 | gettimeofday (&tv, 0); |
60 | gettimeofday (&tv, 0); |
61 | return tv.tv_sec + tv.tv_usec * 0.000001; |
61 | return tv.tv_sec + tv.tv_usec * 0.000001; |
62 | } |
62 | } |
63 | |
63 | |
64 | typedef struct { |
64 | typedef struct |
|
|
65 | { |
65 | int family; |
66 | int family; |
66 | addr_t lo, hi; |
67 | addr_tt lo, hi; |
67 | double interval; |
68 | double interval; |
68 | tstamp next; |
69 | tstamp next; |
69 | } RANGE; |
70 | } RANGE; |
70 | |
71 | |
71 | typedef struct { |
72 | typedef struct |
|
|
73 | { |
72 | SV *id; |
74 | SV *id; |
73 | double interval; |
75 | double interval; |
74 | int nranges; |
76 | int nranges; |
75 | RANGE *ranges; |
77 | RANGE *ranges; |
76 | uint32_t payload; |
78 | uint32_t payload; |
77 | } REQ; |
79 | } REQ; |
78 | |
80 | |
79 | typedef struct { |
81 | typedef struct |
|
|
82 | { |
80 | uint8_t version_ihl; |
83 | uint8_t version_ihl; |
81 | uint8_t tos; |
84 | uint8_t tos; |
82 | uint16_t tot_len; |
85 | uint16_t tot_len; |
83 | |
86 | |
84 | uint16_t id; |
87 | uint16_t id; |
… | |
… | |
90 | |
93 | |
91 | uint32_t src; |
94 | uint32_t src; |
92 | uint32_t dst; |
95 | uint32_t dst; |
93 | } IP4HDR; |
96 | } IP4HDR; |
94 | |
97 | |
95 | typedef struct { |
98 | typedef struct |
|
|
99 | { |
96 | uint8_t version; |
100 | uint8_t version; |
97 | uint8_t x1, x2, x3; |
101 | uint8_t x1, x2, x3; |
98 | |
102 | |
99 | uint16_t payload_len; |
103 | uint16_t payload_len; |
100 | uint8_t nxt_hdr; |
104 | uint8_t nxt_hdr; |
… | |
… | |
106 | |
110 | |
107 | #define MAGIC 0xca4c |
111 | #define MAGIC 0xca4c |
108 | |
112 | |
109 | static uint16_t magic; |
113 | static uint16_t magic; |
110 | |
114 | |
111 | typedef struct { |
115 | typedef struct |
|
|
116 | { |
112 | uint8_t type, code; |
117 | uint8_t type, code; |
113 | uint16_t cksum; |
118 | uint16_t cksum; |
114 | uint16_t id, seq; |
119 | uint16_t id, seq; |
115 | uint32_t payload; |
120 | uint32_t payload; |
116 | tstamp stamp; // be careful when accessing this |
121 | tstamp stamp; // be careful when accessing this |
… | |
… | |
140 | |
145 | |
141 | return ~sum; |
146 | return ~sum; |
142 | } |
147 | } |
143 | |
148 | |
144 | static void |
149 | static void |
145 | inc_addr (addr_t *addr) |
150 | inc_addr (addr_tt *addr) |
146 | { |
151 | { |
147 | int len = sizeof (addr_t) - 1; |
152 | int len = sizeof (addr_tt) - 1; |
148 | |
153 | |
149 | do |
154 | do |
150 | { |
155 | { |
151 | if ((*addr)[len] != 0xff) |
156 | if ((*addr)[len] != 0xff) |
152 | { |
157 | { |
… | |
… | |
211 | while (req->nranges) |
216 | while (req->nranges) |
212 | { |
217 | { |
213 | RANGE *range = req->ranges; |
218 | RANGE *range = req->ranges; |
214 | int n, k; |
219 | int n, k; |
215 | |
220 | |
216 | if (!memcmp (&range->lo, &range->hi, sizeof (addr_t))) |
221 | if (!memcmp (&range->lo, &range->hi, sizeof (addr_tt))) |
217 | req->ranges [0] = req->ranges [--req->nranges]; |
222 | req->ranges [0] = req->ranges [--req->nranges]; |
218 | else |
223 | else |
219 | { |
224 | { |
220 | // ranges [0] is always the next range to ping |
225 | // ranges [0] is always the next range to ping |
221 | tstamp wait = range->next - now; |
226 | tstamp wait = range->next - now; |
… | |
… | |
249 | { |
254 | { |
250 | pkt.type = ICMP4_ECHO; |
255 | pkt.type = ICMP4_ECHO; |
251 | pkt.cksum = icmp_cksum (&pkt, sizeof (pkt)); |
256 | pkt.cksum = icmp_cksum (&pkt, sizeof (pkt)); |
252 | |
257 | |
253 | memcpy (&sa4.sin_addr, |
258 | memcpy (&sa4.sin_addr, |
254 | sizeof (addr_t) - sizeof (sa4.sin_addr) + (char *)&range->lo, |
259 | sizeof (addr_tt) - sizeof (sa4.sin_addr) + (char *)&range->lo, |
255 | sizeof (sa4.sin_addr)); |
260 | sizeof (sa4.sin_addr)); |
256 | |
261 | |
257 | if (sendto (icmp4_fd, &pkt, sizeof (pkt), 0, (struct sockaddr *)&sa4, sizeof (sa4)) > 0) |
262 | if (sendto (icmp4_fd, &pkt, sizeof (pkt), 0, (struct sockaddr *)&sa4, sizeof (sa4)) > 0) |
258 | errno = 0; |
263 | errno = 0; |
259 | } |
264 | } |
… | |
… | |
261 | { |
266 | { |
262 | #if ENABLE_IPV6 |
267 | #if ENABLE_IPV6 |
263 | pkt.type = ICMP6_ECHO; |
268 | pkt.type = ICMP6_ECHO; |
264 | |
269 | |
265 | memcpy (&sa6.sin6_addr, |
270 | memcpy (&sa6.sin6_addr, |
266 | sizeof (addr_t) - sizeof (sa6.sin6_addr) + (char *)&range->lo, |
271 | sizeof (addr_tt) - sizeof (sa6.sin6_addr) + (char *)&range->lo, |
267 | sizeof (sa6.sin6_addr)); |
272 | sizeof (sa6.sin6_addr)); |
268 | |
273 | |
269 | if (sendto (icmp6_fd, &pkt, sizeof (pkt), 0, (struct sockaddr *)&sa6, sizeof (sa6)) > 0) |
274 | if (sendto (icmp6_fd, &pkt, sizeof (pkt), 0, (struct sockaddr *)&sa6, sizeof (sa6)) > 0) |
270 | errno = 0; |
275 | errno = 0; |
271 | #endif |
276 | #endif |
… | |
… | |
469 | hi = *av_fetch (av, 1, 1); |
474 | hi = *av_fetch (av, 1, 1); |
470 | |
475 | |
471 | sv_utf8_downgrade (lo, 0); |
476 | sv_utf8_downgrade (lo, 0); |
472 | sv_utf8_downgrade (hi, 0); |
477 | sv_utf8_downgrade (hi, 0); |
473 | |
478 | |
474 | memset (&r->lo, 0, sizeof (addr_t)); |
479 | memset (&r->lo, 0, sizeof (addr_tt)); |
475 | memset (&r->hi, 0, sizeof (addr_t)); |
480 | memset (&r->hi, 0, sizeof (addr_tt)); |
476 | |
481 | |
477 | if (SvPOKp (lo) && SvPOKp (hi)) |
482 | if (SvPOKp (lo) && SvPOKp (hi)) |
478 | { |
483 | { |
479 | if (SvCUR (lo) != SvCUR (hi)) |
484 | if (SvCUR (lo) != SvCUR (hi)) |
480 | croak ("all addresses in range must be of the same size (either 4 or 16 bytes)"); |
485 | croak ("all addresses in range must be of the same size (either 4 or 16 bytes)"); |
481 | |
486 | |
482 | if (SvCUR (lo) == 4) |
487 | if (SvCUR (lo) == 4) |
483 | { |
488 | { |
484 | r->family = AF_INET; |
489 | r->family = AF_INET; |
485 | memcpy (sizeof (addr_t) - 4 + (char *)&r->lo, SvPVX (lo), 4); |
490 | memcpy (sizeof (addr_tt) - 4 + (char *)&r->lo, SvPVX (lo), 4); |
486 | memcpy (sizeof (addr_t) - 4 + (char *)&r->hi, SvPVX (hi), 4); |
491 | memcpy (sizeof (addr_tt) - 4 + (char *)&r->hi, SvPVX (hi), 4); |
487 | } |
492 | } |
488 | else if (SvCUR (lo) == 16) |
493 | else if (SvCUR (lo) == 16) |
489 | { |
494 | { |
490 | #if ENABLE_IPV6 |
495 | #if ENABLE_IPV6 |
491 | r->family = AF_INET6; |
496 | r->family = AF_INET6; |
492 | memcpy (&r->lo, SvPVX (lo), sizeof (addr_t)); |
497 | memcpy (&r->lo, SvPVX (lo), sizeof (addr_tt)); |
493 | memcpy (&r->hi, SvPVX (hi), sizeof (addr_t)); |
498 | memcpy (&r->hi, SvPVX (hi), sizeof (addr_tt)); |
494 | #else |
499 | #else |
495 | croak ("IPv6 not supported in this configuration"); |
500 | croak ("IPv6 not supported in this configuration"); |
496 | #endif |
501 | #endif |
497 | } |
502 | } |
498 | else |
503 | else |
… | |
… | |
502 | { |
507 | { |
503 | uint32_t addr; |
508 | uint32_t addr; |
504 | |
509 | |
505 | r->family = AF_INET; |
510 | r->family = AF_INET; |
506 | |
511 | |
507 | addr = htonl (SvUV (lo)); memcpy (sizeof (addr_t) - 4 + (char *)&r->lo, &addr, 4); |
512 | addr = htonl (SvUV (lo)); memcpy (sizeof (addr_tt) - 4 + (char *)&r->lo, &addr, 4); |
508 | addr = htonl (SvUV (hi)); memcpy (sizeof (addr_t) - 4 + (char *)&r->hi, &addr, 4); |
513 | addr = htonl (SvUV (hi)); memcpy (sizeof (addr_tt) - 4 + (char *)&r->hi, &addr, 4); |
509 | } |
514 | } |
510 | else |
515 | else |
511 | croak ("addresses in range must be strings with either 4 (IPv4) or 16 (IPv6) octets"); |
516 | croak ("addresses in range must be strings with either 4 (IPv4) or 16 (IPv6) octets"); |
512 | |
517 | |
513 | if (r->family == AF_INET) |
518 | if (r->family == AF_INET) |