mirror of
https://git.tartarus.org/simon/putty.git
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f39c51f9a7
This gets rid of all those annoying 'win', 'ux' and 'gtk' prefixes which made filenames annoying to type and to tab-complete. Also, as with my other recent renaming sprees, I've taken the opportunity to expand and clarify some of the names so that they're not such cryptic abbreviations.
106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/*
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* uxproxy.c: Unix implementation of platform_new_connection(),
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* supporting an OpenSSH-like proxy command.
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*/
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#include <stdio.h>
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#include <assert.h>
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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "tree234.h"
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#include "putty.h"
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#include "network.h"
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#include "proxy.h"
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Socket *platform_new_connection(SockAddr *addr, const char *hostname,
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int port, bool privport,
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bool oobinline, bool nodelay, bool keepalive,
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Plug *plug, Conf *conf)
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{
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char *cmd;
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int to_cmd_pipe[2], from_cmd_pipe[2], cmd_err_pipe[2], pid, proxytype;
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int infd, outfd, inerrfd;
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proxytype = conf_get_int(conf, CONF_proxy_type);
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if (proxytype != PROXY_CMD && proxytype != PROXY_FUZZ)
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return NULL;
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if (proxytype == PROXY_CMD) {
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cmd = format_telnet_command(addr, port, conf);
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{
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char *logmsg = dupprintf("Starting local proxy command: %s", cmd);
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plug_log(plug, PLUGLOG_PROXY_MSG, NULL, 0, logmsg, 0);
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sfree(logmsg);
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}
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/*
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* Create the pipes to the proxy command, and spawn the proxy
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* command process.
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*/
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if (pipe(to_cmd_pipe) < 0 ||
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pipe(from_cmd_pipe) < 0 ||
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pipe(cmd_err_pipe) < 0) {
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sfree(cmd);
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return new_error_socket_fmt(plug, "pipe: %s", strerror(errno));
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}
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cloexec(to_cmd_pipe[1]);
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cloexec(from_cmd_pipe[0]);
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cloexec(cmd_err_pipe[0]);
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pid = fork();
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if (pid == 0) {
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close(0);
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close(1);
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dup2(to_cmd_pipe[0], 0);
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dup2(from_cmd_pipe[1], 1);
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close(to_cmd_pipe[0]);
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close(from_cmd_pipe[1]);
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dup2(cmd_err_pipe[1], 2);
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noncloexec(0);
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noncloexec(1);
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execl("/bin/sh", "sh", "-c", cmd, (void *)NULL);
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_exit(255);
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}
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sfree(cmd);
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if (pid < 0)
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return new_error_socket_fmt(plug, "fork: %s", strerror(errno));
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close(to_cmd_pipe[0]);
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close(from_cmd_pipe[1]);
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close(cmd_err_pipe[1]);
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outfd = to_cmd_pipe[1];
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infd = from_cmd_pipe[0];
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inerrfd = cmd_err_pipe[0];
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} else {
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cmd = format_telnet_command(addr, port, conf);
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outfd = open("/dev/null", O_WRONLY);
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if (outfd == -1) {
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sfree(cmd);
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return new_error_socket_fmt(
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plug, "/dev/null: %s", strerror(errno));
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}
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infd = open(cmd, O_RDONLY);
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if (infd == -1) {
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Socket *toret = new_error_socket_fmt(
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plug, "%s: %s", cmd, strerror(errno));
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sfree(cmd);
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close(outfd);
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return toret;
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}
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sfree(cmd);
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inerrfd = -1;
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}
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/* We are responsible for this and don't need it any more */
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sk_addr_free(addr);
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return make_fd_socket(infd, outfd, inerrfd, plug);
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}
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