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| 24 | #include <cstring> |
24 | #include <cstring> |
| 25 | #include <cstdio> |
25 | #include <cstdio> |
| 26 | |
26 | |
| 27 | #include <sys/types.h> |
27 | #include <sys/types.h> |
| 28 | #include <sys/socket.h> |
28 | #include <sys/socket.h> |
| 29 | #include <sys/poll.h> |
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| 30 | #include <sys/wait.h> |
29 | #include <sys/wait.h> |
| 31 | #include <errno.h> |
30 | #include <errno.h> |
| 32 | #include <time.h> |
31 | #include <time.h> |
| 33 | #include <unistd.h> |
32 | #include <unistd.h> |
| 34 | #include <fcntl.h> |
33 | #include <fcntl.h> |
| 35 | #include <sys/socket.h> |
34 | #include <sys/socket.h> |
| 36 | #include <netinet/in.h> |
35 | |
| 37 | #include <arpa/inet.h> |
36 | #include "netcompat.h" |
| 38 | #include <net/if.h> |
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| 39 | #ifdef HAVE_NETINET_IN_SYSTM_H |
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| 40 | # include <netinet/in_systm.h> |
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| 41 | #endif |
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| 42 | #ifdef HAVE_NETINET_IP_H |
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| 43 | # include <netinet/ip.h> |
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| 44 | #endif |
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| 45 | #ifdef HAVE_NETINET_TCP_H |
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| 46 | # include <netinet/tcp.h> |
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| 47 | #endif |
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| 48 | #if ENABLE_ICMP |
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| 49 | # include <netinet/ip_icmp.h> |
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| 50 | #endif |
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| 51 | |
37 | |
| 52 | #include "pidfile.h" |
38 | #include "pidfile.h" |
| 53 | |
39 | |
| 54 | #include "connection.h" |
40 | #include "connection.h" |
| 55 | #include "util.h" |
41 | #include "util.h" |
| 56 | #include "vpn.h" |
42 | #include "vpn.h" |
| 57 | |
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| 58 | #if !defined(SOL_IP) && defined(IPPROTO_IP) |
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| 59 | # define SOL_IP IPPROTO_IP |
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| 60 | #endif |
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| 61 | |
43 | |
| 62 | ///////////////////////////////////////////////////////////////////////////// |
44 | ///////////////////////////////////////////////////////////////////////////// |
| 63 | |
45 | |
| 64 | const char *vpn::script_if_up () |
46 | const char *vpn::script_if_up () |
| 65 | { |
47 | { |
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| 320 | |
302 | |
| 321 | return ~sum; |
303 | return ~sum; |
| 322 | } |
304 | } |
| 323 | |
305 | |
| 324 | #if ENABLE_ICMP |
306 | #if ENABLE_ICMP |
| 325 | struct icmp_header { |
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| 326 | u8 type; |
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| 327 | u8 code; |
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| 328 | u16 checksum; |
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| 329 | union { |
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| 330 | struct { |
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| 331 | u16 id; |
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| 332 | u16 sequence; |
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| 333 | } echo; |
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| 334 | u32 gateway; |
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| 335 | struct { |
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| 336 | u16 unused; |
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| 337 | u16 mtu; |
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| 338 | } frag; |
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| 339 | } un; |
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| 340 | }; |
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| 341 | |
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| 342 | bool |
307 | bool |
| 343 | vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
308 | vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
| 344 | { |
309 | { |
| 345 | #if defined(SOL_IP) && defined(IP_TOS) |
310 | #if defined(SOL_IP) && defined(IP_TOS) |
| 346 | setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
311 | setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
