diff options
Diffstat (limited to 'usr.bin/telnet/commands.c')
| -rw-r--r-- | usr.bin/telnet/commands.c | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/usr.bin/telnet/commands.c b/usr.bin/telnet/commands.c index 769e2ee4070..a254d8fe105 100644 --- a/usr.bin/telnet/commands.c +++ b/usr.bin/telnet/commands.c @@ -1,4 +1,4 @@ -/* $OpenBSD: commands.c,v 1.4 1996/04/21 23:44:11 deraadt Exp $ */ +/* $OpenBSD: commands.c,v 1.5 1996/07/03 14:01:55 niklas Exp $ */ /* $NetBSD: commands.c,v 1.14 1996/03/24 22:03:48 jtk Exp $ */ /* @@ -39,7 +39,7 @@ static char sccsid[] = "@(#)commands.c 8.4 (Berkeley) 5/30/95"; static char rcsid[] = "$NetBSD: commands.c,v 1.14 1996/03/24 22:03:48 jtk Exp $"; #else -static char rcsid[] = "$OpenBSD: commands.c,v 1.4 1996/04/21 23:44:11 deraadt Exp $"; +static char rcsid[] = "$OpenBSD: commands.c,v 1.5 1996/07/03 14:01:55 niklas Exp $"; #endif #endif /* not lint */ @@ -2084,8 +2084,9 @@ tn(argc, argv) int argc; char *argv[]; { - register struct hostent *host = 0; + register struct hostent *host = 0, *alias = 0; struct sockaddr_in sin; + struct sockaddr_in ladr; struct servent *sp = 0; unsigned long temp; extern char *inet_ntoa(); @@ -2093,7 +2094,7 @@ tn(argc, argv) char *srp = 0, *strrchr(); unsigned long sourceroute(), srlen; #endif - char *cmd, *hostp = 0, *portp = 0, *user = 0; + char *cmd, *hostp = 0, *portp = 0, *user = 0, *aliasp = 0; /* clear the socket address prior to use */ memset((char *)&sin, 0, sizeof(sin)); @@ -2124,6 +2125,14 @@ tn(argc, argv) --argc; continue; } + if (strcmp(*argv, "-b") == 0) { + --argc; ++argv; + if (argc == 0) + goto usage; + aliasp = *argv++; + --argc; + continue; + } if (strcmp(*argv, "-a") == 0) { --argc; ++argv; autologin = 1; @@ -2242,7 +2251,38 @@ tn(argc, argv) perror("telnet: socket"); return 0; } -#if defined(IP_OPTIONS) && defined(IPPROTO_IP) + if (aliasp) { + memset ((caddr_t)&ladr, 0, sizeof (ladr)); + temp = inet_addr(aliasp); + if (temp != INADDR_NONE) { + ladr.sin_addr.s_addr = temp; + ladr.sin_family = AF_INET; + alias = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET); + } else { + alias = gethostbyname(aliasp); + if (alias) { + ladr.sin_family = alias->h_addrtype; +#if defined(h_addr) /* In 4.3, this is a #define */ + memmove((caddr_t)&ladr.sin_addr, + alias->h_addr_list[0], alias->h_length); +#else /* defined(h_addr) */ + memmove((caddr_t)&ladr.sin_addr, alias->h_addr, + alias->h_length); +#endif /* defined(h_addr) */ + } else { + herror(aliasp); + return 0; + } + } + ladr.sin_port = htons(0); + + if (bind (net, (struct sockaddr *)&ladr, sizeof(ladr)) < 0) { + perror(aliasp);; + (void) close(net); /* dump descriptor */ + return 0; + } + } + #if defined(IP_OPTIONS) && defined(IPPROTO_IP) if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0) perror("setsockopt (IP_OPTIONS)"); #endif |