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A feature to allow one to telnet to a unix domain socket.

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Obtained from:   Lyndon Nerenberg <lyndon@orthanc.ab.ca>
This commit is contained in:
Matthew Dillon 2001-05-23 22:47:16 +00:00
parent 60517fd1f7
commit a4cc82665c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=77092
3 changed files with 44 additions and 4 deletions
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30
usr.bin/telnet/commands.c
View File

@ -39,6 +39,7 @@ static char sccsid[] = "@(#)commands.c 8.2 (Berkeley) 12/15/93";
#if defined(unix)
#include <sys/param.h>
#include <sys/un.h>
#if defined(CRAY) || defined(sysV88)
#include <sys/types.h>
#endif
@ -2109,6 +2110,9 @@ sockaddr_ntop(sa)
case AF_INET:
addr = &((struct sockaddr_in *)sa)->sin_addr;
break;
case AF_UNIX:
addr = &((struct sockaddr_un *)sa)->sun_path;
break;
#ifdef INET6
case AF_INET6:
addr = &((struct sockaddr_in6 *)sa)->sin6_addr;
@ -2267,7 +2271,30 @@ tn(argc, argv)
}
src_res0 = src_res;
}
if (hostp[0] == '@' || hostp[0] == '!') {
if (hostp[0] == '/') {
struct sockaddr_un su;
if (strlen(hostp) >= sizeof(su.sun_path)) {
fprintf(stderr, "hostname too long for unix domain socket: %s",
hostp);
goto fail;
}
memset(&su, 0, sizeof su);
su.sun_family = AF_UNIX;
strncpy(su.sun_path, hostp, sizeof su.sun_path);
printf("Trying %s...\n", &su.sun_path);
net = socket(PF_UNIX, SOCK_STREAM, 0);
if ( net < 0) {
perror("socket");
goto fail;
}
if (connect(net, (struct sockaddr *)&su, sizeof su) == -1) {
perror(su.sun_path);
(void) NetClose(net);
goto fail;
}
goto af_unix;
} else if (hostp[0] == '@' || hostp[0] == '!') {
if (
#ifdef INET6
family == AF_INET6 ||
@ -2450,6 +2477,7 @@ tn(argc, argv)
if (src_res0 != NULL)
freeaddrinfo(src_res0);
cmdrc(hostp, hostname);
af_unix:
if (autologin && user == NULL) {
struct passwd *pw;

5
usr.bin/telnet/main.c
View File

@ -157,11 +157,14 @@ main(argc, argv)
#define IPSECOPT
#endif
while ((ch = getopt(argc, argv,
"468EKLNS:X:acde:fFk:l:n:rs:t:x" IPSECOPT)) != -1)
"468EKLNS:X:acde:fFk:l:n:rs:t:ux" IPSECOPT)) != -1)
#undef IPSECOPT
{
switch(ch) {
case 'u':
family = AF_UNIX;
break;
case '4':
family = AF_INET;
break;

13
usr.bin/telnet/telnet.1
View File

@ -42,7 +42,7 @@
protocol
.Sh SYNOPSIS
.Nm
.Op Fl 468EFKLNacdfrx
.Op Fl u468EFKLNacdfrx
.Op Fl S Ar tos
.Op Fl X Ar authtype
.Op Fl e Ar escapechar
@ -75,6 +75,11 @@ command with those arguments.
.Pp
Options:
.Bl -tag -width indent
.It Fl u
Forces
.Nm
to use
AF_UNIX addresses only (e.g. unix domain sockets, accessed with a file path)
.It Fl 4
Forces
.Nm
@ -205,7 +210,11 @@ option is not available outside of the United States and
Canada.
.It Ar host
Indicates the official name, an alias, or the Internet address
of a remote host.
of a remote host. If
.Ar host
starts with a /,
.Nm
establishes a connection to the corresponding named socket.
.It Ar port
Indicates a port number (address of an application). If a number is
not specified, the default