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Implement `portfwd-loopback-choice'. Works on local side in Unix as

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well, though it's a lot less useful since you still can't bind to
low-numbered ports of odd loopback IPs. Should work in principle for
SSH2 remote forwardings as well as local ones, but OpenSSH seems
unwilling to cooperate.

[originally from svn r2344]
This commit is contained in:
Simon Tatham
2002-12-18 11:39:25 +00:00
parent 8cb52a26e1
commit 99b870dbc6
9 changed files with 182 additions and 50 deletions
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21
cmdline.c
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@ -160,7 +160,7 @@ int cmdline_process_param(char *p, char *value, int need_save)
cfg.username[sizeof(cfg.username) - 1] = '\0';
}
if ((!strcmp(p, "-L") || !strcmp(p, "-R"))) {
char *fwd, *ptr, *q;
char *fwd, *ptr, *q, *qq;
int i=0;
RETURN(2);
UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER);
@ -180,8 +180,23 @@ int cmdline_process_param(char *p, char *value, int need_save)
return ret;
}
strncpy(ptr+1, fwd, sizeof(cfg.portfwd) - i);
q = strchr(ptr, ':');
if (q) *q = '\t'; /* replace first : with \t */
/*
* We expect _at least_ two colons in this string. The
* possible formats are `sourceport:desthost:destport', or
* `sourceip:sourceport:desthost:destport' if you're
* specifying a particular loopback address. We need to
* replace the one between source and dest with a \t; this
* means we must find the second-to-last colon in the
* string.
*/
q = qq = strchr(ptr, ':');
while (qq) {
char *qqq = strchr(qq+1, ':');
if (qqq)
q = qq;
qq = qqq;
}
if (q) *q = '\t'; /* replace second-last colon with \t */
cfg.portfwd[sizeof(cfg.portfwd) - 1] = '\0';
cfg.portfwd[sizeof(cfg.portfwd) - 2] = '\0';
ptr[strlen(ptr)+1] = '\000'; /* append two '\000' */