client.c
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上传日期:2007-01-04
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文件大小:5k
- /*
- * Copyright (c) 1997, 1998, 1999
- * Inferno Nettverk A/S, Norway. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. The above copyright notice, this list of conditions and the following
- * disclaimer must appear in all copies of the software, derivative works
- * or modified versions, and any portions thereof, aswell as in all
- * supporting documentation.
- * 2. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by
- * Inferno Nettverk A/S, Norway.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Inferno Nettverk A/S requests users of this software to return to
- *
- * Software Distribution Coordinator or sdc@inet.no
- * Inferno Nettverk A/S
- * Oslo Research Park
- * Gaustadal閑n 21
- * N-0349 Oslo
- * Norway
- *
- * any improvements or extensions that they make and grant Inferno Nettverk A/S
- * the rights to redistribute these changes.
- *
- */
- #include "common.h"
- static const char rcsid[] =
- "$Id: client.c,v 1.43 1999/12/22 09:29:22 karls Exp $";
- #if !HAVE_PROGNAME
- char *__progname = "danteclient";
- #endif
- int
- SOCKSinit(progname)
- char *progname;
- {
- __progname = progname;
- return 0;
- }
- void
- clientinit(void)
- {
- /* const char *function = "clientinit()"; */
- if (config.state.init)
- return;
- config.state.pid = getpid();
- if (issetugid())
- config.option.configfile = SOCKS_CONFIGFILE;
- else
- if ((config.option.configfile = getenv("SOCKS_CONF")) == NULL)
- config.option.configfile = SOCKS_CONFIGFILE;
- /*
- * initialize misc options to sensible default.
- */
- config.resolveprotocol = RESOLVEPROTOCOL_UDP;
- config.option.lbuf = 1;
- genericinit();
- slog(LOG_INFO, "%s/client v%s running", PACKAGE, VERSION);
- }
- int
- serverreplyisok(version, reply, route)
- int version;
- int reply;
- struct route_t *route;
- {
- const char *function = "serverreplyisok()";
- switch (version) {
- case SOCKS_V4:
- switch (reply) {
- case SOCKSV4_SUCCESS:
- return 1;
- case SOCKSV4_FAIL:
- errno = ECONNREFUSED;
- break;
- case SOCKSV4_NO_IDENTD:
- swarnx("%s: proxyserver failed to get your identd response",
- function);
- errno = ECONNREFUSED;
- return 0;
- case SOCKSV4_BAD_ID:
- swarnx("%s: proxyserver claims username/ident mismatch",
- function);
- errno = ECONNREFUSED;
- return 0;
- default:
- swarnx("%s: unknown v%d reply from proxyserver: %d",
- function, version, reply);
- errno = ECONNREFUSED;
- break;
- }
- break;
- case SOCKS_V5:
- switch (reply) {
- case SOCKS_SUCCESS:
- return 1;
- case SOCKS_FAILURE:
- swarnx("%s: unknown proxyserver failure", function);
- errno = ECONNREFUSED;
- break;
- case SOCKS_NOTALLOWED:
- swarnx("%s: connection denied by proxyserver", function);
- errno = ECONNREFUSED;
- return 0;
- case SOCKS_NETUNREACH:
- errno = ENETUNREACH;
- return 0;
- case SOCKS_HOSTUNREACH:
- errno = EHOSTUNREACH;
- return 0;
- case SOCKS_CONNREFUSED:
- errno = ECONNREFUSED;
- return 0;
- case SOCKS_TTLEXPIRED:
- errno = ETIMEDOUT;
- return 0;
- case SOCKS_CMD_UNSUPP:
- swarnx("%s: command not supported by proxyserver", function);
- errno = ECONNREFUSED;
- break;
- case SOCKS_ADDR_UNSUPP:
- swarnx("%s: address type not supported by proxyserver",
- function);
- errno = ECONNREFUSED;
- break;
- default:
- swarnx("%s: unknown v%d reply from proxyserver: %d",
- function, version, reply);
- errno = ECONNREFUSED;
- break;
- }
- break;
- case MSPROXY_V2:
- switch (reply) {
- case MSPROXY_SUCCESS:
- return 1;
- case MSPROXY_FAILURE:
- case MSPROXY_CONNREFUSED:
- errno = ECONNREFUSED;
- return 0;
- case MSPROXY_NOTALLOWED:
- swarnx("%s: connection denied by proxyserver: authenticated?",
- function);
- errno = ECONNREFUSED;
- return 0;
- default:
- swarnx("%s: unknown v%d reply from proxyserver: %d",
- function, version, reply);
- errno = ECONNREFUSED;
- return 0;
- }
- default:
- SERRX(version);
- }
- if (route != NULL)
- socks_badroute(route);
- return 0;
- }