* Created: Thu Apr 7 13:29:41 1994 too
* Last modified: Fri Jun 9 14:34:24 2000 too
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*
* HISTORY
* Revision 3.1 1994/04/17 11:31:54 too
#include <netinet/in.h>
#include "busybox.h"
-#if 0
-static const int DOTRACE = 1;
-#endif
-
#ifdef DOTRACE
#include <arpa/inet.h> /* for inet_ntoa()... */
#define TRACE(x, y) do { if (x) printf y; } while (0)
#define TRACE(x, y)
#endif
-#if 0
-#define USE_POLL
-#include <sys/poll.h>
-#else
-#include <sys/time.h>
-#endif
-
#define DATABUFSIZE 128
#define IACBUFSIZE 128
-static const int CHM_TRY = 0;
-static const int CHM_ON = 1;
-static const int CHM_OFF = 2;
+enum {
+ CHM_TRY = 0,
+ CHM_ON = 1,
+ CHM_OFF = 2,
-static const int UF_ECHO = 0x01;
-static const int UF_SGA = 0x02;
+ UF_ECHO = 0x01,
+ UF_SGA = 0x02,
-enum {
TS_0 = 1,
TS_IAC = 2,
TS_OPT = 3,
byte charmode;
byte telflags;
byte gotsig;
+ byte do_termios;
/* buffer to handle telnet negotiations */
char iacbuf[IACBUFSIZE];
short iaclen; /* could even use byte */
#define G (*Gptr)
#endif
-static inline void iacflush(void)
+static void iacflush(void)
{
write(G.netfd, G.iacbuf, G.iaclen);
G.iaclen = 0;
static int subneg(byte c);
/* Some globals */
-static int one = 1;
+static const int one = 1;
#ifdef CONFIG_FEATURE_TELNET_TTYPE
static char *ttype;
* I don't agree.
* first - I cannot use programs like sz/rz
* second - the 0x0D is sent as one character and if the next
- * char is 0x0A then it's eaten by a server side.
+ * char is 0x0A then it's eaten by a server side.
* third - whay doy you have to make 'many write()s'?
- * I don't understand.
+ * I don't understand.
* So I implemented it. It's realy useful for me. I hope that
* others people will find it interesting to.
*/
int i, j;
- byte * p = G.buf;
+ byte * p = (byte*)G.buf;
byte outbuf[4*DATABUFSIZE];
for (i = len, j = 0; i > 0; i--, p++)
}
outbuf[j++] = *p;
if (*p == 0xff)
- outbuf[j++] = 0xff;
+ outbuf[j++] = 0xff;
else if (*p == 0x0d)
- outbuf[j++] = 0x00;
+ outbuf[j++] = 0x00;
}
if (j > 0 )
- write(G.netfd, outbuf, j);
+ write(G.netfd, outbuf, j);
}
/* ******************************* */
-static inline void putiac(int c)
+static void putiac(int c)
{
G.iacbuf[G.iaclen++] = c;
}
putiac(c);
}
-#if 0
-static void putiac1(byte c)
-{
- if (G.iaclen + 2 > IACBUFSIZE)
- iacflush();
-
- putiac(IAC);
- putiac(c);
-}
-#endif
-
#ifdef CONFIG_FEATURE_TELNET_TTYPE
static void putiac_subopt(byte c, char *str)
{
putiac(c);
putiac(0);
- while(*str)
+ while (*str)
putiac(*str++);
putiac(IAC);
putiac(TELQUAL_IS);
putiac(NEW_ENV_VAR);
- while(*user)
+ while (*user)
putiac(*user++);
putiac(NEW_ENV_VALUE);
- while(*autologin)
+ while (*autologin)
putiac(*autologin++);
putiac(IAC);
/* ******************************* */
-static inline void to_notsup(char c)
+static void to_notsup(char c)
{
if (G.telwish == WILL) putiac2(DONT, c);
else if (G.telwish == DO) putiac2(WONT, c);
}
-static inline void to_echo(void)
+static void to_echo(void)
{
/* if server requests ECHO, don't agree */
if (G.telwish == DO) { putiac2(WONT, TELOPT_ECHO); return; }
WriteCS(1, "\r\n"); /* sudden modec */
}
-static inline void to_sga(void)
+static void to_sga(void)
{
/* daemon always sends will/wont, client do/dont */
}
#ifdef CONFIG_FEATURE_TELNET_TTYPE
-static inline void to_ttype(void)
+static void to_ttype(void)
{
/* Tell server we will (or won't) do TTYPE */
#endif
#ifdef CONFIG_FEATURE_TELNET_AUTOLOGIN
-static inline void to_new_environ(void)
+static void to_new_environ(void)
{
/* Tell server we will (or will not) do AUTOLOGIN */
#endif
#ifdef CONFIG_FEATURE_AUTOWIDTH
-static inline void to_naws(void)
+static void to_naws(void)
{
/* Tell server we will do NAWS */
putiac2(WILL, TELOPT_NAWS);
static void rawmode(void)
{
- tcsetattr(0, TCSADRAIN, &G.termios_raw);
+ if (G.do_termios) tcsetattr(0, TCSADRAIN, &G.termios_raw);
}
static void cookmode(void)
{
- tcsetattr(0, TCSADRAIN, &G.termios_def);
+ if (G.do_termios) tcsetattr(0, TCSADRAIN, &G.termios_def);
}
-extern int telnet_main(int argc, char** argv)
+int telnet_main(int argc, char** argv)
{
int len;
struct sockaddr_in s_in;
int maxfd;
#endif
-#ifdef CONFIG_FEATURE_TELNET_AUTOLOGIN
- int opt;
-#endif
-
#ifdef CONFIG_FEATURE_AUTOWIDTH
get_terminal_width_height(0, &win_width, &win_height);
#endif
#ifdef CONFIG_FEATURE_TELNET_TTYPE
- ttype = getenv("TERM");
+ ttype = getenv("TERM");
#endif
memset(&G, 0, sizeof G);
- if (tcgetattr(0, &G.termios_def) < 0)
- exit(1);
+ if (tcgetattr(0, &G.termios_def) >= 0) {
+ G.do_termios = 1;
- G.termios_raw = G.termios_def;
- cfmakeraw(&G.termios_raw);
+ G.termios_raw = G.termios_def;
+ cfmakeraw(&G.termios_raw);
+ }
if (argc < 2)
bb_show_usage();
#ifdef CONFIG_FEATURE_TELNET_AUTOLOGIN
- autologin = NULL;
- while ((opt = getopt(argc, argv, "al:")) != EOF) {
- switch (opt) {
- case 'l':
- autologin = optarg;
- break;
- case 'a':
- autologin = getenv("USER");
- break;
- case '?':
- bb_show_usage();
- break;
- }
- }
+ if (1 & getopt32(argc, argv, "al:", &autologin))
+ autologin = getenv("USER");
+
if (optind < argc) {
bb_lookup_host(&s_in, argv[optind++]);
s_in.sin_port = bb_lookup_port((optind < argc) ? argv[optind++] :
s_in.sin_port = bb_lookup_port((argc == 3) ? argv[2] : "telnet", "tcp", 23);
#endif
- G.netfd = xconnect(&s_in);
+ G.netfd = xconnect_tcp_v4(&s_in);
setsockopt(G.netfd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof one);
}
}
}
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/
projects / oweals / busybox.git / blobdiff