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Merge from non-crypto version:

Browse Source 
- "-N" option
- "-E" security fix
- "-s src_addr" option

Requested by:	markm
This commit is contained in:
Ruslan Ermilov 1999-06-17 09:24:37 +00:00
parent 1181cf3c52
commit 42cf8219dc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=47973
10 changed files with 150 additions and 30 deletions
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43
contrib/telnet/telnet/commands.c
View File

@ -1125,7 +1125,7 @@ unsetcmd(argc, argv)
#ifdef KLUDGELINEMODE
extern int kludgelinemode;
static void
static int
dokludgemode()
{
kludgelinemode = 1;
@ -2277,7 +2277,7 @@ tn(argc, argv)
char *argv[];
{
register struct hostent *host = 0;
struct sockaddr_in sin;
struct sockaddr_in sin, src_sin;
struct servent *sp = 0;
unsigned long temp;
extern char *inet_ntoa();
@ -2286,6 +2286,7 @@ tn(argc, argv)
unsigned long sourceroute(), srlen;
#endif
char *cmd, *hostp = 0, *portp = 0, *user = 0;
char *src_addr = NULL;
/* clear the socket address prior to use */
memset((char *)&sin, 0, sizeof(sin));
@ -2321,6 +2322,14 @@ tn(argc, argv)
autologin = 1;
continue;
}
if (strcmp(*argv, "-s") == 0) {
--argc; ++argv;
if (argc == 0)
goto usage;
src_addr = *argv++;
--argc;
continue;
}
if (hostp == 0) {
hostp = *argv++;
--argc;
@ -2332,13 +2341,31 @@ tn(argc, argv)
continue;
}
usage:
printf("usage: %s [-l user] [-a] host-name [port]\n", cmd);
printf("usage: %s [-l user] [-a] [-s src_addr] host-name [port]\n", cmd);
setuid(getuid());
return 0;
}
if (hostp == 0)
goto usage;
if (src_addr != NULL) {
bzero((char *)&src_sin, sizeof(src_sin));
src_sin.sin_family = AF_INET;
if (!inet_aton(src_addr, &src_sin.sin_addr)) {
host = gethostbyname2(src_addr, AF_INET);
if (host == NULL) {
herror(src_addr);
return 0;
}
if (host->h_length != sizeof(src_sin.sin_addr)) {
fprintf(stderr, "telnet: gethostbyname2: invalid address\n");
return 0;
}
memcpy((void *)&src_sin.sin_addr, (void *)host->h_addr_list[0],
sizeof(src_sin.sin_addr));
}
}
#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
if (hostp[0] == '@' || hostp[0] == '!') {
if ((hostname = strrchr(hostp, ':')) == NULL)
@ -2364,7 +2391,8 @@ tn(argc, argv)
if (temp != INADDR_NONE) {
sin.sin_addr.s_addr = temp;
sin.sin_family = AF_INET;
host = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET);
if (doaddrlookup)
host = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET);
if (host)
(void) strncpy(_hostname, host->h_name, sizeof(_hostname));
else
@ -2460,6 +2488,13 @@ tn(argc, argv)
perror("setsockopt (SO_DEBUG)");
}
if (src_addr != NULL) {
if (bind(net, (struct sockaddr *)&src_sin, sizeof(src_sin)) == -1) {
perror("bind");
return 0;
}
}
if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) {
#if defined(h_addr) /* In 4.3, this is a #define */
if (host && host->h_addr_list[1]) {

1
contrib/telnet/telnet/externs.h
View File

@ -146,6 +146,7 @@ extern int
termdata, /* Print out terminal data flow */
#endif /* defined(unix) */
debug, /* Debug level */
doaddrlookup, /* do a reverse lookup? */
clienteof; /* Client received EOF */
extern cc_t escape; /* Escape to command mode */

31
contrib/telnet/telnet/main.c
View File

@ -95,20 +95,22 @@ usage()
fprintf(stderr, "Usage: %s %s%s%s%s\n",
prompt,
#ifdef AUTHENTICATION
"[-8] [-E] [-K] [-L] [-S tos] [-X atype] [-a] [-c] [-d] [-e char]",
"\n\t[-k realm] [-l user] [-f/-F] [-n tracefile] ",
"[-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-a] [-c] [-d]",
"\n\t[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ",
#else
"[-8] [-E] [-L] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
"\n\t[-n tracefile]",
"[-8] [-E] [-L] [-N] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
"\n\t[-n tracefile] ",
#endif
#if defined(TN3270) && defined(unix)
# ifdef AUTHENTICATION
"[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ",
"[-noasynch] [-noasynctty]\n\t"
"[-noasyncnet] [-r] [-s src_addr] [-t transcom] ",
# else
"[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]",
"[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t"
"[-s src_addr] [-t transcom]",
# endif
#else
"[-r] ",
"[-r] [-s src_addr] ",
#endif
#ifdef ENCRYPTION
"[-x] [host-name [port]]"
@ -132,6 +134,7 @@ main(argc, argv)
extern int optind;
int ch;
char *user, *strrchr();
char *src_addr = NULL;
#ifdef FORWARD
extern int forward_flags;
#endif /* FORWARD */
@ -153,7 +156,7 @@ main(argc, argv)
rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
autologin = -1;
while ((ch = getopt(argc, argv, "8EKLS:X:acde:fFk:l:n:rt:x")) != EOF) {
while ((ch = getopt(argc, argv, "8EKLNS:X:acde:fFk:l:n:rs:t:x")) != EOF) {
switch(ch) {
case '8':
eight = 3; /* binary output and input */
@ -169,6 +172,9 @@ main(argc, argv)
case 'L':
eight |= 2; /* binary output only */
break;
case 'N':
doaddrlookup = 0;
break;
case 'S':
{
#ifdef HAS_GETTOS
@ -270,6 +276,9 @@ main(argc, argv)
case 'r':
rlogin = '~';
break;
case 's':
src_addr = optarg;
break;
case 't':
#if defined(TN3270) && defined(unix)
transcom = tline;
@ -303,7 +312,7 @@ main(argc, argv)
argv += optind;
if (argc) {
char *args[7], **argp = args;
char *args[9], **argp = args;
if (argc > 2)
usage();
@ -312,6 +321,10 @@ main(argc, argv)
*argp++ = "-l";
*argp++ = user;
}
if (src_addr) {
*argp++ = "-s";
*argp++ = src_addr;
}
*argp++ = argv[0]; /* host */
if (argc > 1)
*argp++ = argv[1]; /* port */

12
contrib/telnet/telnet/telnet.1
View File

@ -41,13 +41,14 @@
protocol
.Sh SYNOPSIS
.Nm telnet
.Op Fl 8EFKLacdfrx
.Op Fl 8EFKLNacdfrx
.Op Fl S Ar tos
.Op Fl X Ar authtype
.Op Fl e Ar escapechar
.Op Fl k Ar realm
.Op Fl l Ar user
.Op Fl n Ar tracefile
.Op Fl s Ar src_addr
.Oo
.Ar host
.Op port
@ -91,6 +92,9 @@ Specifies no automatic login to the remote system.
.It Fl L
Specifies an 8-bit data path on output. This causes the
BINARY option to be negotiated on output.
.It Fl N
Prevents IP address to name lookup when destination host is given
as an IP address.
.It Fl S Ar tos
Sets the IP type-of-service (TOS) option for the telnet
connection to the value
@ -173,6 +177,12 @@ Specifies a user interface similar to
In this
mode, the escape character is set to the tilde (~) character,
unless modified by the -e option.
.It Fl s Ar src_addr
Set the source IP address for the
.Nm
connection to
.Ar src_addr ,
which can be an IP address or a host name.
.It Fl x
Turns on encryption of the data stream if possible. This
option is not available outside of the United States and

3
contrib/telnet/telnet/telnet.c
View File

@ -116,6 +116,7 @@ int
donebinarytoggle, /* the user has put us in binary */
dontlecho, /* do we suppress local echoing right now? */
globalmode,
doaddrlookup = 1, /* do a reverse address lookup? */
clienteof = 0;
char *prompt = 0;
@ -2083,7 +2084,7 @@ telsnd()
}
if ((sc == '\n') || (sc == '\r'))
bol = 1;
} else if (sc == escape) {
} else if (escape != _POSIX_VDISABLE && sc == escape) {
/*
* Double escape is a pass through of a single escape character.
*/

43
crypto/telnet/telnet/commands.c
View File

@ -1125,7 +1125,7 @@ unsetcmd(argc, argv)
#ifdef KLUDGELINEMODE
extern int kludgelinemode;
static void
static int
dokludgemode()
{
kludgelinemode = 1;
@ -2277,7 +2277,7 @@ tn(argc, argv)
char *argv[];
{
register struct hostent *host = 0;
struct sockaddr_in sin;
struct sockaddr_in sin, src_sin;
struct servent *sp = 0;
unsigned long temp;
extern char *inet_ntoa();
@ -2286,6 +2286,7 @@ tn(argc, argv)
unsigned long sourceroute(), srlen;
#endif
char *cmd, *hostp = 0, *portp = 0, *user = 0;
char *src_addr = NULL;
/* clear the socket address prior to use */
memset((char *)&sin, 0, sizeof(sin));
@ -2321,6 +2322,14 @@ tn(argc, argv)
autologin = 1;
continue;
}
if (strcmp(*argv, "-s") == 0) {
--argc; ++argv;
if (argc == 0)
goto usage;
src_addr = *argv++;
--argc;
continue;
}
if (hostp == 0) {
hostp = *argv++;
--argc;
@ -2332,13 +2341,31 @@ tn(argc, argv)
continue;
}
usage:
printf("usage: %s [-l user] [-a] host-name [port]\n", cmd);
printf("usage: %s [-l user] [-a] [-s src_addr] host-name [port]\n", cmd);
setuid(getuid());
return 0;
}
if (hostp == 0)
goto usage;
if (src_addr != NULL) {
bzero((char *)&src_sin, sizeof(src_sin));
src_sin.sin_family = AF_INET;
if (!inet_aton(src_addr, &src_sin.sin_addr)) {
host = gethostbyname2(src_addr, AF_INET);
if (host == NULL) {
herror(src_addr);
return 0;
}
if (host->h_length != sizeof(src_sin.sin_addr)) {
fprintf(stderr, "telnet: gethostbyname2: invalid address\n");
return 0;
}
memcpy((void *)&src_sin.sin_addr, (void *)host->h_addr_list[0],
sizeof(src_sin.sin_addr));
}
}
#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
if (hostp[0] == '@' || hostp[0] == '!') {
if ((hostname = strrchr(hostp, ':')) == NULL)
@ -2364,7 +2391,8 @@ tn(argc, argv)
if (temp != INADDR_NONE) {
sin.sin_addr.s_addr = temp;
sin.sin_family = AF_INET;
host = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET);
if (doaddrlookup)
host = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET);
if (host)
(void) strncpy(_hostname, host->h_name, sizeof(_hostname));
else
@ -2460,6 +2488,13 @@ tn(argc, argv)
perror("setsockopt (SO_DEBUG)");
}
if (src_addr != NULL) {
if (bind(net, (struct sockaddr *)&src_sin, sizeof(src_sin)) == -1) {
perror("bind");
return 0;
}
}
if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) {
#if defined(h_addr) /* In 4.3, this is a #define */
if (host && host->h_addr_list[1]) {

1
crypto/telnet/telnet/externs.h
View File

@ -146,6 +146,7 @@ extern int
termdata, /* Print out terminal data flow */
#endif /* defined(unix) */
debug, /* Debug level */
doaddrlookup, /* do a reverse lookup? */
clienteof; /* Client received EOF */
extern cc_t escape; /* Escape to command mode */

31
crypto/telnet/telnet/main.c
View File

@ -95,20 +95,22 @@ usage()
fprintf(stderr, "Usage: %s %s%s%s%s\n",
prompt,
#ifdef AUTHENTICATION
"[-8] [-E] [-K] [-L] [-S tos] [-X atype] [-a] [-c] [-d] [-e char]",
"\n\t[-k realm] [-l user] [-f/-F] [-n tracefile] ",
"[-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-a] [-c] [-d]",
"\n\t[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ",
#else
"[-8] [-E] [-L] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
"\n\t[-n tracefile]",
"[-8] [-E] [-L] [-N] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
"\n\t[-n tracefile] ",
#endif
#if defined(TN3270) && defined(unix)
# ifdef AUTHENTICATION
"[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ",
"[-noasynch] [-noasynctty]\n\t"
"[-noasyncnet] [-r] [-s src_addr] [-t transcom] ",
# else
"[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]",
"[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t"
"[-s src_addr] [-t transcom]",
# endif
#else
"[-r] ",
"[-r] [-s src_addr] ",
#endif
#ifdef ENCRYPTION
"[-x] [host-name [port]]"
@ -132,6 +134,7 @@ main(argc, argv)
extern int optind;
int ch;
char *user, *strrchr();
char *src_addr = NULL;
#ifdef FORWARD
extern int forward_flags;
#endif /* FORWARD */
@ -153,7 +156,7 @@ main(argc, argv)
rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
autologin = -1;
while ((ch = getopt(argc, argv, "8EKLS:X:acde:fFk:l:n:rt:x")) != EOF) {
while ((ch = getopt(argc, argv, "8EKLNS:X:acde:fFk:l:n:rs:t:x")) != EOF) {
switch(ch) {
case '8':
eight = 3; /* binary output and input */
@ -169,6 +172,9 @@ main(argc, argv)
case 'L':
eight |= 2; /* binary output only */
break;
case 'N':
doaddrlookup = 0;
break;
case 'S':
{
#ifdef HAS_GETTOS
@ -270,6 +276,9 @@ main(argc, argv)
case 'r':
rlogin = '~';
break;
case 's':
src_addr = optarg;
break;
case 't':
#if defined(TN3270) && defined(unix)
transcom = tline;
@ -303,7 +312,7 @@ main(argc, argv)
argv += optind;
if (argc) {
char *args[7], **argp = args;
char *args[9], **argp = args;
if (argc > 2)
usage();
@ -312,6 +321,10 @@ main(argc, argv)
*argp++ = "-l";
*argp++ = user;
}
if (src_addr) {
*argp++ = "-s";
*argp++ = src_addr;
}
*argp++ = argv[0]; /* host */
if (argc > 1)
*argp++ = argv[1]; /* port */

12
crypto/telnet/telnet/telnet.1
View File

@ -41,13 +41,14 @@
protocol
.Sh SYNOPSIS
.Nm telnet
.Op Fl 8EFKLacdfrx
.Op Fl 8EFKLNacdfrx
.Op Fl S Ar tos
.Op Fl X Ar authtype
.Op Fl e Ar escapechar
.Op Fl k Ar realm
.Op Fl l Ar user
.Op Fl n Ar tracefile
.Op Fl s Ar src_addr
.Oo
.Ar host
.Op port
@ -91,6 +92,9 @@ Specifies no automatic login to the remote system.
.It Fl L
Specifies an 8-bit data path on output. This causes the
BINARY option to be negotiated on output.
.It Fl N
Prevents IP address to name lookup when destination host is given
as an IP address.
.It Fl S Ar tos
Sets the IP type-of-service (TOS) option for the telnet
connection to the value
@ -173,6 +177,12 @@ Specifies a user interface similar to
In this
mode, the escape character is set to the tilde (~) character,
unless modified by the -e option.
.It Fl s Ar src_addr
Set the source IP address for the
.Nm
connection to
.Ar src_addr ,
which can be an IP address or a host name.
.It Fl x
Turns on encryption of the data stream if possible. This
option is not available outside of the United States and

3
crypto/telnet/telnet/telnet.c
View File

@ -116,6 +116,7 @@ int
donebinarytoggle, /* the user has put us in binary */
dontlecho, /* do we suppress local echoing right now? */
globalmode,
doaddrlookup = 1, /* do a reverse address lookup? */
clienteof = 0;
char *prompt = 0;
@ -2083,7 +2084,7 @@ telsnd()
}
if ((sc == '\n') || (sc == '\r'))
bol = 1;
} else if (sc == escape) {
} else if (escape != _POSIX_VDISABLE && sc == escape) {
/*
* Double escape is a pass through of a single escape character.
*/