rping.c
资源名称:socks5.zip [点击查看]
上传用户:sddyfurun
上传日期:2007-01-04
资源大小:525k
文件大小:2k
源码类别:
代理服务器
开发平台:
Unix_Linux
- /* Copyright (c) 1996 NEC Corporation. All rights reserved. */
- /* */
- /* The redistribution, use and modification in source or binary forms of */
- /* this software is subject to the conditions set forth in the copyright */
- /* document ("COPYRIGHT") included with this distribution. */
- #include "socks5p.h"
- #include "wrap.h"
- #include "libproto.h"
- #include "protocol.h"
- #include "addr.h"
- #include "share.h"
- #define EXITERROR(err) ( perror("ping"), exit((err)) )
- int main(int argc, char *argv[]) {
- S5IOHandle fd;
- S5NetAddr rsin;
- lsSocksInfo *pcon;
- struct hostent *rhp;
- if (argc != 2 || *argv[1] == '-') {
- fprintf(stderr, "Usage: %s hostn", argv[0]);
- exit(-1);
- }
- if (LIBPREFIX2(init)(NULL) != 0) EXITERROR(-1);
- memset((char *)&rsin, 0, sizeof(S5NetAddr));
- rsin.sin.sin_family = AF_INET;
- if ((rsin.sin.sin_addr.s_addr = inet_addr(argv[1])) == INVALIDADDR) {
- if ((rhp = LIBPREFIX(gethostbyname)(argv[1])) == NULL) EXITERROR(-1);
- memcpy((char *)&rsin.sin.sin_addr.s_addr, (char *)rhp->h_addr_list[0], rhp->h_length);
- rsin.sin.sin_family = rhp->h_addrtype;
- }
- if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == S5InvalidIOHandle) return -1;
- Signal(SIGPIPE, SIG_IGN);
- if ((pcon = lsLibProtoExchg(fd, &rsin, SOCKS_PING)) == NULL) {
- fprintf(stderr, "lsLibProtoExchg: Protocol exchange failed. n");
- CLOSESOCKET(fd);
- return -1;
- }
- if (!pcon->pri || pcon->pri->how == DIRECT || !lsAddrAddrComp(&rsin, &pcon->pri->prxyin)) {
- LIBPREFIX(close)(fd);
- #ifndef PINGPROG
- fprintf(stderr, "Real ping unavailable.n");
- exit(0);
- #else
- execlp(PINGPROG, "ping", argv[1], NULL);
- _exit(0);
- #endif
- }
- DataRelay(fd, &pcon->pri->cinfo, 0);
- LIBPREFIX(close)(fd);
- exit(0);
- }