| 1 | #include <sys/types.h> |
| 2 | #include <sys/socket.h> |
| 3 | #include <sys/param.h> |
| 4 | #include <netinet/in.h> |
| 5 | #include "sig.h" |
| 6 | #include "stralloc.h" |
| 7 | #include "str.h" |
| 8 | #include "env.h" |
| 9 | #include "fmt.h" |
| 10 | #include "scan.h" |
| 11 | #include "subgetopt.h" |
| 12 | #include "ip.h" |
| 13 | #include "dns.h" |
| 14 | #include "byte.h" |
| 15 | #include "remoteinfo.h" |
| 16 | #include "exit.h" |
| 17 | #include "case.h" |
| 18 | |
| 19 | void die() { _exit(111); } |
| 20 | |
| 21 | struct sockaddr_in salocal; |
| 22 | unsigned long localport; |
| 23 | struct ip_address iplocal; |
| 24 | stralloc localname = {0}; |
| 25 | |
| 26 | struct sockaddr_in saremote; |
| 27 | unsigned long remoteport; |
| 28 | struct ip_address ipremote; |
| 29 | stralloc remotename = {0}; |
| 30 | |
| 31 | char temp[IPFMT + FMT_ULONG]; |
| 32 | |
| 33 | void main(argc,argv) |
| 34 | int argc; |
| 35 | char *argv[]; |
| 36 | { |
| 37 | int dummy; |
| 38 | char *proto; |
| 39 | int opt; |
| 40 | int flagremoteinfo; |
| 41 | unsigned long timeout; |
| 42 | |
| 43 | sig_pipeignore(); |
| 44 | |
| 45 | flagremoteinfo = 1; |
| 46 | timeout = 30; |
| 47 | while ((opt = sgopt(argc,argv,"rRt:")) != sgoptdone) |
| 48 | switch(opt) |
| 49 | { |
| 50 | case 'r': flagremoteinfo = 1; break; |
| 51 | case 'R': flagremoteinfo = 0; break; |
| 52 | case 't': scan_ulong(sgoptarg,&timeout); break; |
| 53 | } |
| 54 | |
| 55 | argv += sgoptind; |
| 56 | argc -= sgoptind; |
| 57 | |
| 58 | if (argc < 1) die(); |
| 59 | if (!env_init()) die(); |
| 60 | |
| 61 | proto = env_get("PROTO"); |
| 62 | if (!proto || str_diff(proto,"TCP")) |
| 63 | { |
| 64 | if (!env_put("PROTO=TCP")) die(); |
| 65 | |
| 66 | dummy = sizeof(salocal); |
| 67 | if (getsockname(0,(struct sockaddr *) &salocal,&dummy) == -1) die(); |
| 68 | |
| 69 | localport = ntohs(salocal.sin_port); |
| 70 | temp[fmt_ulong(temp,localport)] = 0; |
| 71 | if (!env_put2("TCPLOCALPORT",temp)) die(); |
| 72 | |
| 73 | byte_copy(&iplocal,4,&salocal.sin_addr); |
| 74 | temp[ip_fmt(temp,&iplocal)] = 0; |
| 75 | if (!env_put2("TCPLOCALIP",temp)) die(); |
| 76 | |
| 77 | switch(dns_ptr(&localname,&iplocal)) |
| 78 | { |
| 79 | case DNS_MEM: die(); |
| 80 | case DNS_SOFT: |
| 81 | if (!stralloc_copys(&localname,"softdnserror")) die(); |
| 82 | case 0: |
| 83 | if (!stralloc_0(&localname)) die(); |
| 84 | case_lowers(localname.s); |
| 85 | if (!env_put2("TCPLOCALHOST",localname.s)) die(); |
| 86 | break; |
| 87 | default: |
| 88 | if (!env_unset("TCPLOCALHOST")) die(); |
| 89 | } |
| 90 | |
| 91 | dummy = sizeof(saremote); |
| 92 | if (getpeername(0,(struct sockaddr *) &saremote,&dummy) == -1) die(); |
| 93 | |
| 94 | remoteport = ntohs(saremote.sin_port); |
| 95 | temp[fmt_ulong(temp,remoteport)] = 0; |
| 96 | if (!env_put2("TCPREMOTEPORT",temp)) die(); |
| 97 | |
| 98 | byte_copy(&ipremote,4,&saremote.sin_addr); |
| 99 | temp[ip_fmt(temp,&ipremote)] = 0; |
| 100 | if (!env_put2("TCPREMOTEIP",temp)) die(); |
| 101 | |
| 102 | switch(dns_ptr(&remotename,&ipremote)) |
| 103 | { |
| 104 | case DNS_MEM: die(); |
| 105 | case DNS_SOFT: |
| 106 | if (!stralloc_copys(&remotename,"softdnserror")) die(); |
| 107 | case 0: |
| 108 | if (!stralloc_0(&remotename)) die(); |
| 109 | case_lowers(remotename.s); |
| 110 | if (!env_put2("TCPREMOTEHOST",remotename.s)) die(); |
| 111 | break; |
| 112 | default: |
| 113 | if (!env_unset("TCPREMOTEHOST")) die(); |
| 114 | } |
| 115 | |
| 116 | if (!env_unset("TCPREMOTEINFO")) die(); |
| 117 | if (flagremoteinfo) |
| 118 | { |
| 119 | char *rinfo; |
| 120 | rinfo = remoteinfo_get(&ipremote,remoteport,&iplocal,localport,(int) timeout); |
| 121 | if (rinfo) |
| 122 | if (!env_put2("TCPREMOTEINFO",rinfo)) die(); |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | sig_pipedefault(); |
| 127 | execvp(*argv,argv); |
| 128 | die(); |
| 129 | } |