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New command-line option in Plink (and PuTTY, though it's less useful

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there): `plink host -nc host2:port' causes the SSH connection's main
channel to be replaced with a direct-tcpip connection to the
specified destination. This feature is mainly designed for use as a
local proxy: setting your local proxy command to `plink %proxyhost
-nc %host:%port' lets you tunnel SSH over SSH with a minimum of
fuss. Works on all platforms.

[originally from svn r6823]
This commit is contained in:
Simon Tatham
2006-08-28 15:12:37 +00:00
parent 8c26b44ce6
commit 631b494807
7 changed files with 133 additions and 10 deletions
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22
cmdline.c
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@ -249,6 +249,28 @@ int cmdline_process_param(char *p, char *value, int need_save, Config *cfg)
cfg->portfwd[sizeof(cfg->portfwd) - 2] = '\0';
ptr[strlen(ptr)+1] = '\000'; /* append 2nd '\000' */
}
if ((!strcmp(p, "-nc"))) {
char *host, *portp;
RETURN(2);
UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
SAVEABLE(0);
host = portp = value;
while (*portp && *portp != ':')
portp++;
if (*portp) {
unsigned len = portp - host;
if (len >= sizeof(cfg->ssh_nc_host))
len = sizeof(cfg->ssh_nc_host) - 1;
strncpy(cfg->ssh_nc_host, value, len);
cfg->ssh_nc_host[sizeof(cfg->ssh_nc_host) - 1] = '\0';
cfg->ssh_nc_port = atoi(portp+1);
} else {
cmdline_error("-nc expects argument of form 'host:port'");
return ret;
}
}
if (!strcmp(p, "-m")) {
char *filename, *command;
int cmdlen, cmdsize;