commands.c
资源名称:socks5.zip [点击查看]
上传用户:sddyfurun
上传日期:2007-01-04
资源大小:525k
文件大小:63k
源码类别:
代理服务器
开发平台:
Unix_Linux
- /* Copyright (c) 1988, 1990, 1993 */
- /* The Regents of the University of California. All rights reserved. */
- /* */
- /* Redistribution and use in source and binary forms, with or without */
- /* modification, are permitted provided that the following conditions */
- /* are met: */
- /* 1. Redistributions of source code must retain the above copyright */
- /* notice, this list of conditions and the following disclaimer. */
- /* 2. Redistributions in binary form must reproduce the above copyright */
- /* notice, this list of conditions and the following disclaimer in the */
- /* documentation and/or other materials provided with the distribution. */
- /* 3. All advertising materials mentioning features or use of this */
- /* software must display the following acknowledgement: */
- /* This product includes software developed by the University of */
- /* California, Berkeley and its contributors. */
- /* 4. Neither the name of the University nor the names of its contributors */
- /* may be used to endorse or promote products derived from this software */
- /* without specific prior written permission. */
- /* */
- /* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
- /* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
- /* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
- /* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE */
- /* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
- /* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
- /* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
- /* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
- /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
- /* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
- /* THE POSSIBILITY OF SUCH DAMAGE. */
- #ifdef SHOW_SCCIDS
- static char sccsid[] = "@(#)commands.c 8.4 (Berkeley) 5/30/95";
- #endif
- #include "config.h"
- #ifdef HAVE_SYS_PARAM_H
- #include <sys/param.h>
- #endif
- #ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_FILE_H
- #include <sys/file.h>
- #endif
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #include <sys/socket.h>
- #include <netinet/in.h>
- #ifdef HAVE_SYS_FCNTL_H
- #include <sys/fcntl.h>
- #endif
- #ifdef HAVE_FCNTL_H
- #include <fcntl.h>
- #endif
- #include <stdio.h>
- #ifdef HAVE_STRING_H
- #include <string.h>
- #endif
- #ifdef HAVE_STRINGS_H
- #include <strings.h>
- #endif
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #ifdef HAVE_STDLIB_H
- #include <stdlib.h>
- #endif
- #include <signal.h>
- #include <ctype.h>
- #include <pwd.h>
- #include <varargs.h>
- #include <errno.h>
- #include <arpa/telnet.h>
- #include "general.h"
- #include "ring.h"
- #include "externs.h"
- #include "defines.h"
- #include "types.h"
- #ifdef HAVE_MACHINE_ENDIAN_H
- #include <machine/endian.h>
- #endif
- #include <netinet/ip.h>
- #define DONT_NEED_SIGBLOCK
- #define DONT_NEED_SIGUNBLOCK
- #define DONT_NEED_SIGPAUSE
- #define DONT_NEED_SIGPENDING
- #include "sigfix.h"
- #ifndef MAXHOSTNAMELEN
- #define MAXHOSTNAMELEN 64
- #endif
- #if defined(IPPROTO_IP) && defined(IP_TOS)
- int tos = -1;
- #endif
- char *hostname;
- static char _hostname[MAXHOSTNAMELEN];
- extern int isprefix();
- extern char **genget();
- extern int Ambiguous();
- extern void herror();
- static call();
- typedef struct {
- char *name; /* command name */
- char *help; /* help string (NULL for no help) */
- int (*handler)(); /* routine which executes command */
- int needconnect; /* Do we need to be connected to execute? */
- } Command;
- static char line[256];
- static char saveline[256];
- static int margc;
- static char *margv[20];
- void cmdrc P((char *, char *));
- static void makeargv() {
- register char *cp, *cp2, c;
- register char **argp = margv;
- margc = 0;
- cp = line;
- if (*cp == '!') { /* Special case shell escape */
- strcpy(saveline, line); /* save for shell command */
- *argp++ = "!"; /* No room in string to get this */
- margc++;
- cp++;
- }
- while ((c = *cp)) {
- register int inquote = 0;
- while (isspace(c))
- c = *++cp;
- if (c == ' ')
- break;
- *argp++ = cp;
- margc += 1;
- for (cp2 = cp; c != ' '; c = *++cp) {
- if (inquote) {
- if (c == inquote) {
- inquote = 0;
- continue;
- }
- } else {
- if (c == '\') {
- if ((c = *++cp) == ' ')
- break;
- } else if (c == '"') {
- inquote = '"';
- continue;
- } else if (c == ''') {
- inquote = ''';
- continue;
- } else if (isspace(c))
- break;
- }
- *cp2++ = c;
- }
- *cp2 = ' ';
- if (c == ' ')
- break;
- cp++;
- }
- *argp++ = 0;
- }
- /* Make a character string into a number. */
- /* Todo: 1. Could take random integers (12, 0x12, 012, 0b1). */
- static char special(register char *s) {
- register char c;
- char b;
- switch (*s) {
- case '^':
- b = *++s;
- if (b == '?') {
- c = b | 0x40; /* DEL */
- } else {
- c = b & 0x1f;
- }
- break;
- default:
- c = *s;
- break;
- }
- return c;
- }
- /* Construct a control character sequence for a special character. */
- static char *control(register cc_t c) {
- static char buf[5];
- /* The only way I could get the Sun 3.5 compiler to shut up about "if */
- /* ((unsigned int)c >= 0x80)" was to assign "c" to an unsigned int */
- /* variable... Arggg.... */
- register unsigned int uic = (unsigned int)c;
- if (uic == 0x7f) {
- return ("^?");
- }
- if (c == (cc_t)_POSIX_VDISABLE) {
- return "off";
- }
- if (uic >= 0x80) {
- buf[0] = '\';
- buf[1] = ((c>>6)&07) + '0';
- buf[2] = ((c>>3)&07) + '0';
- buf[3] = (c&07) + '0';
- buf[4] = 0;
- } else if (uic >= 0x20) {
- buf[0] = c;
- buf[1] = 0;
- } else {
- buf[0] = '^';
- buf[1] = '@'+c;
- buf[2] = 0;
- }
- return (buf);
- }
- /* The following are data structures and routines for */
- /* the "send" command. */
- struct sendlist {
- char *name; /* How user refers to it (case independent) */
- char *help; /* Help information (0 ==> no help) */
- int needconnect; /* Need to be connected */
- int narg; /* Number of arguments */
- int (*handler)(); /* Routine to perform (for special ops) */
- int nbyte; /* Number of bytes to send this command */
- int what; /* Character to be sent (<0 ==> special) */
- };
- static int
- send_esc P((void)),
- send_help P((void)),
- send_docmd P((char *)),
- send_dontcmd P((char *)),
- send_willcmd P((char *)),
- send_wontcmd P((char *));
- static struct sendlist Sendlist[] = {
- { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO },
- { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT },
- { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK },
- { "break", 0, 1, 0, 0, 2, BREAK },
- { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC },
- { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL },
- { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 },
- { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA },
- { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP },
- { "intp", 0, 1, 0, 0, 2, IP },
- { "interrupt", 0, 1, 0, 0, 2, IP },
- { "intr", 0, 1, 0, 0, 2, IP },
- { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP },
- { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR },
- { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT },
- { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP },
- { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF },
- { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 },
- { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 },
- { "?", "Display send options", 0, 0, send_help, 0, 0 },
- { "help", 0, 0, 0, send_help, 0, 0 },
- { "do", 0, 0, 1, send_docmd, 3, 0 },
- { "dont", 0, 0, 1, send_dontcmd, 3, 0 },
- { "will", 0, 0, 1, send_willcmd, 3, 0 },
- { "wont", 0, 0, 1, send_wontcmd, 3, 0 },
- { 0 }
- };
- #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist,
- sizeof(struct sendlist)))
- /*VARARGS*/
- static int bye(int argc, char *argv[]) {
- extern int resettermname;
- if (connected) {
- (void) shutdown(net, 2);
- printf("Connection closed.n");
- (void) NetClose(net);
- connected = 0;
- resettermname = 1;
- /* reset options */
- tninit();
- #ifdef TN3270
- SetIn3270(); /* Get out of 3270 mode */
- #endif /* defined(TN3270) */
- }
- if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
- longjmp(toplevel, 1);
- /* NOTREACHED */
- }
- return 1; /* Keep lint, etc., happy */
- }
- int quit() {
- call(bye, "bye", "fromquit", 0);
- Exit(0);
- /*NOTREACHED*/
- return 0;
- }
- int logout() {
- send_do(TELOPT_LOGOUT, 1);
- netflush();
- return 1;
- }
- static int sendcmd(int argc, char **argv) {
- int count; /* how many bytes we are going to need to send */
- int i;
- struct sendlist *s; /* pointer to current command */
- int success = 0;
- int needconnect = 0;
- if (argc < 2) {
- printf("need at least one argument for 'send' commandn");
- printf("'send ?' for helpn");
- return 0;
- }
- /* First, validate all the send arguments. In addition, we see how much */
- /* space we are going to need, and whether or not we will be doing a */
- /* "SYNCH" operation (which flushes the network queue). */
- count = 0;
- for (i = 1; i < argc; i++) {
- s = GETSEND(argv[i]);
- if (s == 0) {
- printf("Unknown send argument '%s'n'send ?' for help.n", argv[i]);
- return 0;
- } else if (Ambiguous(s)) {
- printf("Ambiguous send argument '%s'n'send ?' for help.n", argv[i]);
- return 0;
- }
- if (i + s->narg >= argc) {
- fprintf(stderr, "Need %d argument%s to 'send %s' command. 'send %s ?' for help.n",
- s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
- return 0;
- }
- count += s->nbyte;
- if (s->handler == send_help) {
- send_help();
- return 0;
- }
- i += s->narg;
- needconnect += s->needconnect;
- }
- if (!connected && needconnect) {
- printf("?Need to be connected first.n");
- printf("'send ?' for helpn");
- return 0;
- }
- /* Now, do we have enough room? */
- if (NETROOM() < count) {
- printf("There is not enough room in the buffer TO the networkn");
- printf("to process your request. Nothing will be done.n");
- printf("('send synch' will throw away most data in the networkn");
- printf("buffer, if this might help.)n");
- return 0;
- }
- /* OK, they are all OK, now go through again and actually send */
- count = 0;
- for (i = 1; i < argc; i++) {
- if ((s = GETSEND(argv[i])) == 0) {
- fprintf(stderr, "Telnet 'send' error - argument disappeared!n");
- (void) quit();
- /*NOTREACHED*/
- }
- if (s->handler) {
- count++;
- success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
- (s->narg > 1) ? argv[i+2] : 0);
- i += s->narg;
- } else {
- NET2ADD(IAC, s->what);
- printoption("SENT", IAC, s->what);
- }
- }
- return (count == success);
- }
- static int send_esc() {
- NETADD(escape);
- return 1;
- }
- static int send_tncmd(void (*func)(), char *cmd, char *name) {
- char **cpp;
- extern char *telopts[];
- register int val = 0;
- if (isprefix(name, "help") || isprefix(name, "?")) {
- register int col, len;
- printf("Usage: send %s <value|option>n", cmd);
- printf(""value" must be from 0 to 255n");
- printf("Valid options are:nt");
- col = 8;
- for (cpp = telopts; *cpp; cpp++) {
- len = strlen(*cpp) + 3;
- if (col + len > 65) {
- printf("nt");
- col = 8;
- }
- printf(" "%s"", *cpp);
- col += len;
- }
- printf("n");
- return 0;
- }
- cpp = (char **)genget(name, telopts, sizeof(char *));
- if (Ambiguous(cpp)) {
- fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).n", name, cmd);
- return 0;
- }
- if (cpp) {
- val = cpp - telopts;
- } else {
- register char *cp = name;
- while (*cp >= '0' && *cp <= '9') {
- val *= 10;
- val += *cp - '0';
- cp++;
- }
- if (*cp != 0) {
- fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).n", name, cmd);
- return 0;
- } else if (val < 0 || val > 255) {
- fprintf(stderr, "'%s': bad value ('send %s ?' for help).n", name, cmd);
- return 0;
- }
- }
- if (!connected) {
- printf("?Need to be connected first.n");
- return 0;
- }
- (*func)(val, 1);
- return 1;
- }
- static int send_docmd(char *name) {
- return(send_tncmd(send_do, "do", name));
- }
- static int send_dontcmd(char *name) {
- return(send_tncmd(send_dont, "dont", name));
- }
- static int send_willcmd(char *name) {
- return(send_tncmd(send_will, "will", name));
- }
- static int send_wontcmd(char *name) {
- return(send_tncmd(send_wont, "wont", name));
- }
- static int send_help() {
- struct sendlist *s; /* pointer to current command */
- for (s = Sendlist; s->name; s++) {
- if (s->help) printf("%-15s %sn", s->name, s->help);
- }
- return(0);
- }
- /* The following are the routines and data structures referred to by the */
- /* arguments to the "toggle" command. */
- static int lclchars() {
- donelclchars = 1;
- return 1;
- }
- static int togdebug() {
- #ifdef NOT43
- if (!debug) {
- printf("Cannot turn off socket debuggingn");
- return 1;
- }
- #endif
- if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0) < 0)
- perror("setsockopt (SO_DEBUG)");
- return 1;
- }
- static int togcrlf() {
- if (crlf) {
- printf("Will send carriage returns as telnet <CR><LF>.n");
- } else {
- printf("Will send carriage returns as telnet <CR><NUL>.n");
- }
- return 1;
- }
- int binmode;
- static int togbinary(int val) {
- donebinarytoggle = 1;
- if (val >= 0) {
- binmode = val;
- } else {
- if (my_want_state_is_will(TELOPT_BINARY) &&
- my_want_state_is_do(TELOPT_BINARY)) {
- binmode = 1;
- } else if (my_want_state_is_wont(TELOPT_BINARY) &&
- my_want_state_is_dont(TELOPT_BINARY)) {
- binmode = 0;
- }
- val = binmode ? 0 : 1;
- }
- if (val == 1) {
- if (my_want_state_is_will(TELOPT_BINARY) &&
- my_want_state_is_do(TELOPT_BINARY)) {
- printf("Already operating in binary mode with remote host.n");
- } else {
- printf("Negotiating binary mode with remote host.n");
- tel_enter_binary(3);
- }
- } else {
- if (my_want_state_is_wont(TELOPT_BINARY) &&
- my_want_state_is_dont(TELOPT_BINARY)) {
- printf("Already in network ascii mode with remote host.n");
- } else {
- printf("Negotiating network ascii mode with remote host.n");
- tel_leave_binary(3);
- }
- }
- return 1;
- }
- static int togrbinary(int val) {
- donebinarytoggle = 1;
- if (val == -1) {
- val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
- }
- if (val == 1) {
- if (my_want_state_is_do(TELOPT_BINARY)) {
- printf("Already receiving in binary mode.n");
- } else {
- printf("Negotiating binary mode on input.n");
- tel_enter_binary(1);
- }
- } else {
- if (my_want_state_is_dont(TELOPT_BINARY)) {
- printf("Already receiving in network ascii mode.n");
- } else {
- printf("Negotiating network ascii mode on input.n");
- tel_leave_binary(1);
- }
- }
- return 1;
- }
- static int togxbinary(int val) {
- donebinarytoggle = 1;
- if (val == -1) {
- val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
- }
- if (val == 1) {
- if (my_want_state_is_will(TELOPT_BINARY)) {
- printf("Already transmitting in binary mode.n");
- } else {
- printf("Negotiating binary mode on output.n");
- tel_enter_binary(2);
- }
- } else {
- if (my_want_state_is_wont(TELOPT_BINARY)) {
- printf("Already transmitting in network ascii mode.n");
- } else {
- printf("Negotiating network ascii mode on output.n");
- tel_leave_binary(2);
- }
- }
- return 1;
- }
- static int togglehelp P((void));
- struct togglelist {
- char *name; /* name of toggle */
- char *help; /* help message */
- int (*handler)(); /* routine to do actual setting */
- int *variable;
- char *actionexplanation;
- };
- static struct togglelist Togglelist[] = {
- { "autoflush",
- "flushing of output when sending interrupt characters",
- 0,
- &autoflush,
- "flush output when sending interrupt characters" },
- { "autosynch",
- "automatic sending of interrupt characters in urgent mode",
- 0,
- &autosynch,
- "send interrupt characters in urgent mode" },
- { "skiprc",
- "don't read ~/.telnetrc file",
- 0,
- &skiprc,
- "skip reading of ~/.telnetrc file" },
- { "binary",
- "sending and receiving of binary data",
- togbinary,
- 0,
- 0 },
- { "inbinary",
- "receiving of binary data",
- togrbinary,
- 0,
- 0 },
- { "outbinary",
- "sending of binary data",
- togxbinary,
- 0,
- 0 },
- { "crlf",
- "sending carriage returns as telnet <CR><LF>",
- togcrlf,
- &crlf,
- 0 },
- { "crmod",
- "mapping of received carriage returns",
- 0,
- &crmod,
- "map carriage return on output" },
- { "localchars",
- "local recognition of certain control characters",
- lclchars,
- &localchars,
- "recognize certain control characters" },
- { " ", "", 0 }, /* empty line */
- #ifdef TN3270
- { "apitrace",
- "(debugging) toggle tracing of API transactions",
- 0,
- &apitrace,
- "trace API transactions" },
- { "cursesdata",
- "(debugging) toggle printing of hexadecimal curses data",
- 0,
- &cursesdata,
- "print hexadecimal representation of curses data" },
- #endif
- { "debug",
- "debugging",
- togdebug,
- &debug,
- "turn on socket level debugging" },
- { "netdata",
- "printing of hexadecimal network data (debugging)",
- 0,
- &netdata,
- "print hexadecimal representation of network traffic" },
- { "prettydump",
- "output of "netdata" to user readable format (debugging)",
- 0,
- &prettydump,
- "print user readable output for "netdata"" },
- { "options",
- "viewing of options processing (debugging)",
- 0,
- &showoptions,
- "show option processing" },
- { "termdata",
- "(debugging) toggle printing of hexadecimal terminal data",
- 0,
- &termdata,
- "print hexadecimal representation of terminal traffic" },
- { "?",
- 0,
- togglehelp },
- { "help",
- 0,
- togglehelp },
- { 0 }
- };
- static int togglehelp() {
- struct togglelist *c;
- for (c = Togglelist; c->name; c++) {
- if (c->help) {
- if (*c->help) printf("%-15s toggle %sn", c->name, c->help);
- else printf("n");
- }
- }
- printf("n");
- printf("%-15s %sn", "?", "display help information");
- return 0;
- }
- static void settogglehelp(int set) {
- struct togglelist *c;
- for (c = Togglelist; c->name; c++) {
- if (c->help) {
- if (*c->help) printf("%-15s %s %sn", c->name, set ? "enable" : "disable", c->help);
- else printf("n");
- }
- }
- }
- #define GETTOGGLE(name) (struct togglelist *) genget(name, (char **) Togglelist, sizeof(struct togglelist))
- static int toggle(int argc, char *argv[]) {
- int retval = 1;
- char *name;
- struct togglelist *c;
- if (argc < 2) {
- fprintf(stderr, "Need an argument to 'toggle' command. 'toggle ?' for help.n");
- return 0;
- }
- argc--;
- argv++;
- while (argc--) {
- name = *argv++;
- c = GETTOGGLE(name);
- if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).n", name);
- return 0;
- } else if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).n", name);
- return 0;
- } else {
- if (c->variable) {
- *c->variable = !*c->variable; /* invert it */
- if (c->actionexplanation) {
- printf("%s %s.n", *c->variable? "Will" : "Won't", c->actionexplanation);
- }
- }
- if (c->handler) {
- retval &= (*c->handler)(-1);
- }
- }
- }
- return retval;
- }
- /* The following perform the "set" command. */
- #ifdef USE_TERMIO
- struct termio new_tc = { 0 };
- #endif
- struct setlist {
- char *name; /* name */
- char *help; /* help information */
- void (*handler)();
- cc_t *charp; /* where it is located at */
- };
- static struct setlist Setlist[] = {
- #ifdef KLUDGELINEMODE
- { "echo", "character to toggle local echoing on/off", 0, &echoc },
- #endif
- { "escape", "character to escape back to telnet command mode", 0, &escape },
- { "rlogin", "rlogin escape character", 0, &rlogin },
- { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
- { " ", "" },
- { " ", "The following need 'localchars' to be toggled true", 0, 0 },
- { "flushoutput", "character to cause an Abort Output", 0, termFlushCharp },
- { "interrupt", "character to cause an Interrupt Process", 0, termIntCharp },
- { "quit", "character to cause an Abort process", 0, termQuitCharp },
- { "eof", "character to cause an EOF ", 0, termEofCharp },
- { " ", "" },
- { " ", "The following are for local editing in linemode", 0, 0 },
- { "erase", "character to use to erase a character", 0, termEraseCharp },
- { "kill", "character to use to erase a line", 0, termKillCharp },
- { "lnext", "character to use for literal next", 0, termLiteralNextCharp },
- { "susp", "character to cause a Suspend Process", 0, termSuspCharp },
- { "reprint", "character to use for line reprint", 0, termRprntCharp },
- { "worderase", "character to use to erase a word", 0, termWerasCharp },
- { "start", "character to use for XON", 0, termStartCharp },
- { "stop", "character to use for XOFF", 0, termStopCharp },
- { "forw1", "alternate end of line character", 0, termForw1Charp },
- { "forw2", "alternate end of line character", 0, termForw2Charp },
- { "ayt", "alternate AYT character", 0, termAytCharp },
- { 0 }
- };
- #if defined(CRAY) && !defined(__STDC__)
- /* Work around compiler bug in pcc 4.1.5 */
- void _setlist_init() {
- #ifndef KLUDGELINEMODE
- #define N 5
- #else
- #define N 6
- #endif
- Setlist[N+0].charp = &termFlushChar;
- Setlist[N+1].charp = &termIntChar;
- Setlist[N+2].charp = &termQuitChar;
- Setlist[N+3].charp = &termEofChar;
- Setlist[N+6].charp = &termEraseChar;
- Setlist[N+7].charp = &termKillChar;
- Setlist[N+8].charp = &termLiteralNextChar;
- Setlist[N+9].charp = &termSuspChar;
- Setlist[N+10].charp = &termRprntChar;
- Setlist[N+11].charp = &termWerasChar;
- Setlist[N+12].charp = &termStartChar;
- Setlist[N+13].charp = &termStopChar;
- Setlist[N+14].charp = &termForw1Char;
- Setlist[N+15].charp = &termForw2Char;
- Setlist[N+16].charp = &termAytChar;
- #undef N
- }
- #endif /* defined(CRAY) && !defined(__STDC__) */
- static struct setlist *getset(char *name) {
- return (struct setlist *)genget(name, (char **) Setlist, sizeof(struct setlist));
- }
- void set_escape_char(char *s) {
- if (rlogin != _POSIX_VDISABLE) {
- rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE;
- printf("Telnet rlogin escape character is '%s'.n", control(rlogin));
- } else {
- escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
- printf("Telnet escape character is '%s'.n", control(escape));
- }
- }
- static int setcmd(int argc, char *argv[]) {
- int value;
- struct setlist *ct;
- struct togglelist *c;
- if (argc < 2 || argc > 3) {
- printf("Format is 'set Name Value'n'set ?' for help.n");
- return 0;
- }
- if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) {
- for (ct = Setlist; ct->name; ct++) printf("%-15s %sn", ct->name, ct->help);
- printf("n");
- settogglehelp(1);
- printf("%-15s %sn", "?", "display help information");
- return 0;
- }
- ct = getset(argv[1]);
- if (ct == 0) {
- c = GETTOGGLE(argv[1]);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('set ?' for help).n", argv[1]);
- return 0;
- } else if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).n", argv[1]);
- return 0;
- }
- if (c->variable) {
- if ((argc == 2) || (strcmp("on", argv[2]) == 0))
- *c->variable = 1;
- else if (strcmp("off", argv[2]) == 0)
- *c->variable = 0;
- else {
- printf("Format is 'set togglename [on|off]'n'set ?' for help.n");
- return 0;
- }
- if (c->actionexplanation) {
- printf("%s %s.n", *c->variable? "Will" : "Won't", c->actionexplanation);
- }
- }
- if (c->handler) (*c->handler)(1);
- } else if (argc != 3) {
- printf("Format is 'set Name Value'n'set ?' for help.n");
- return 0;
- } else if (Ambiguous(ct)) {
- fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).n", argv[1]);
- return 0;
- } else if (ct->handler) {
- (*ct->handler)(argv[2]);
- printf("%s set to "%s".n", ct->name, (char *)ct->charp);
- } else {
- if (strcmp("off", argv[2])) {
- value = special(argv[2]);
- } else {
- value = _POSIX_VDISABLE;
- }
- *(ct->charp) = (cc_t)value;
- printf("%s character is '%s'.n", ct->name, control(*(ct->charp)));
- }
- slc_check();
- return 1;
- }
- static int unsetcmd(int argc, char *argv[]) {
- struct setlist *ct;
- struct togglelist *c;
- register char *name;
- if (argc < 2) {
- fprintf(stderr, "Need an argument to 'unset' command. 'unset ?' for help.n");
- return 0;
- }
- if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) {
- for (ct = Setlist; ct->name; ct++) printf("%-15s %sn", ct->name, ct->help);
- printf("n");
- settogglehelp(0);
- printf("%-15s %sn", "?", "display help information");
- return 0;
- }
- argc--;
- argv++;
- while (argc--) {
- name = *argv++;
- ct = getset(name);
- if (ct == 0) {
- c = GETTOGGLE(name);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('unset ?' for help).n", name);
- return 0;
- } else if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).n", name);
- return 0;
- }
- if (c->variable) {
- *c->variable = 0;
- if (c->actionexplanation) {
- printf("%s %s.n", *c->variable? "Will" : "Won't", c->actionexplanation);
- }
- }
- if (c->handler) (*c->handler)(0);
- } else if (Ambiguous(ct)) {
- fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).n", name);
- return 0;
- } else if (ct->handler) {
- (*ct->handler)(0);
- printf("%s reset to "%s".n", ct->name, (char *)ct->charp);
- } else {
- *(ct->charp) = _POSIX_VDISABLE;
- printf("%s character is '%s'.n", ct->name, control(*(ct->charp)));
- }
- }
- return 1;
- }
- /* The following are the data structures and routines for the 'mode' */
- /* command. */
- #ifdef KLUDGELINEMODE
- extern int kludgelinemode;
- static int dokludgemode() {
- kludgelinemode = 1;
- send_wont(TELOPT_LINEMODE, 1);
- send_dont(TELOPT_SGA, 1);
- send_dont(TELOPT_ECHO, 1);
- return 1;
- }
- #endif
- static int dolinemode() {
- #ifdef KLUDGELINEMODE
- if (kludgelinemode) send_dont(TELOPT_SGA, 1);
- #endif
- send_will(TELOPT_LINEMODE, 1);
- send_dont(TELOPT_ECHO, 1);
- return 1;
- }
- static int docharmode() {
- #ifdef KLUDGELINEMODE
- if (kludgelinemode) send_do(TELOPT_SGA, 1);
- else
- #endif
- send_wont(TELOPT_LINEMODE, 1);
- send_do(TELOPT_ECHO, 1);
- return 1;
- }
- static int dolmmode(int bit, int on) {
- unsigned char c;
- extern int linemode;
- if (my_want_state_is_wont(TELOPT_LINEMODE)) {
- printf("?Need to have LINEMODE option enabled first.n");
- printf("'mode ?' for help.n");
- return 0;
- }
- if (on) c = (linemode | bit);
- else c = (linemode & ~bit);
- lm_mode(&c, 1, 1);
- return 1;
- }
- static int tn_setmode(int bit) {
- return dolmmode(bit, 1);
- }
- static int clearmode(int bit) {
- return dolmmode(bit, 0);
- }
- struct modelist {
- char *name; /* command name */
- char *help; /* help string */
- int (*handler)(); /* routine which executes command */
- int needconnect; /* Do we need to be connected to execute? */
- int arg1;
- };
- extern int modehelp();
- static struct modelist ModeList[] = {
- { "character", "Disable LINEMODE option", docharmode, 1 },
- #ifdef KLUDGELINEMODE
- { "", "(or disable obsolete line-by-line mode)", 0 },
- #endif
- { "line", "Enable LINEMODE option", dolinemode, 1 },
- #ifdef KLUDGELINEMODE
- { "", "(or enable obsolete line-by-line mode)", 0 },
- #endif
- { "", "", 0 },
- { "", "These require the LINEMODE option to be enabled", 0 },
- { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG },
- { "+isig", NULL, tn_setmode, 1, MODE_TRAPSIG },
- { "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG },
- { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT },
- { "+edit", NULL, tn_setmode, 1, MODE_EDIT },
- { "-edit", "Disable character editing", clearmode, 1, MODE_EDIT },
- { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB },
- { "+softtabs", NULL, tn_setmode, 1, MODE_SOFT_TAB },
- { "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB },
- { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO },
- { "+litecho", NULL, tn_setmode, 1, MODE_LIT_ECHO },
- { "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO },
- { "help", NULL, modehelp, 0 },
- #ifdef KLUDGELINEMODE
- { "kludgeline", 0, dokludgemode, 1 },
- #endif
- { "", "", 0 },
- { "?", "Print help information", modehelp, 0 },
- { 0 },
- };
- int modehelp() {
- struct modelist *mt;
- printf("format is: 'mode Mode', where 'Mode' is one of:nn");
- for (mt = ModeList; mt->name; mt++) {
- if (mt->help) {
- if (*mt->help) printf("%-15s %sn", mt->name, mt->help);
- else printf("n");
- }
- }
- return 0;
- }
- #define GETMODECMD(name) (struct modelist *) genget(name, (char **) ModeList, sizeof(struct modelist))
- static int modecmd(int argc, char *argv[]) {
- struct modelist *mt;
- if (argc != 2) {
- printf("'mode' command requires an argumentn");
- printf("'mode ?' for help.n");
- } else if ((mt = GETMODECMD(argv[1])) == 0) {
- fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).n", argv[1]);
- } else if (Ambiguous(mt)) {
- fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).n", argv[1]);
- } else if (mt->needconnect && !connected) {
- printf("?Need to be connected first.n");
- printf("'mode ?' for help.n");
- } else if (mt->handler) {
- return (*mt->handler)(mt->arg1);
- }
- return 0;
- }
- /* The following data structures and routines implement the "display" */
- /* command. */
- static int display(int argc, char *argv[]) {
- struct togglelist *tl;
- struct setlist *sl;
- #define dotog(tl) if (tl->variable && tl->actionexplanation) {
- if (*tl->variable) {
- printf("will");
- } else {
- printf("won't");
- }
- printf(" %s.n", tl->actionexplanation);
- }
- #define doset(sl) if (sl->name && *sl->name != ' ') {
- if (sl->handler == 0)
- printf("%-15s [%s]n", sl->name, control(*sl->charp));
- else
- printf("%-15s "%s"n", sl->name, (char *)sl->charp);
- }
- if (argc == 1) {
- for (tl = Togglelist; tl->name; tl++) {
- dotog(tl);
- }
- printf("n");
- for (sl = Setlist; sl->name; sl++) {
- doset(sl);
- }
- } else {
- int i;
- for (i = 1; i < argc; i++) {
- sl = getset(argv[i]);
- tl = GETTOGGLE(argv[i]);
- if (Ambiguous(sl) || Ambiguous(tl)) {
- printf("?Ambiguous argument '%s'.n", argv[i]);
- return 0;
- } else if (!sl && !tl) {
- printf("?Unknown argument '%s'.n", argv[i]);
- return 0;
- } else {
- if (tl) {
- dotog(tl);
- }
- if (sl) {
- doset(sl);
- }
- }
- }
- }
- /*@*/optionstatus();
- return 1;
- #undef doset
- #undef dotog
- }
- /* The following are the data structures, and many of the routines, relating */
- /* to command processing. */
- /* */
- /* Set the escape character. */
- static int setescape(int argc, char *argv[]) {
- register char *arg;
- char buf[50];
- printf("Deprecated usage - please use 'set escape%s%s' in the future.n",
- (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
- if (argc > 2) arg = argv[1];
- else {
- printf("new escape character: ");
- fgets(buf, sizeof(buf), stdin);
- arg = buf;
- }
- if (arg[0] != ' ') escape = arg[0];
- if (!In3270) {
- printf("Escape character is '%s'.n", control(escape));
- }
- fflush(stdout);
- return 1;
- }
- static int togcrmod() {
- crmod = !crmod;
- printf("Deprecated usage - please use 'toggle crmod' in the future.n");
- printf("%s map carriage return on output.n", crmod ? "Will" : "Won't");
- fflush(stdout);
- return 1;
- }
- int suspend() {
- #ifdef SIGTSTP
- long oldrows, oldcols, newrows, newcols, err;
- setcommandmode();
- err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
- kill(0, SIGTSTP);
- /* If we didn't get the window size before the SUSPEND, but we can get */
- /* them now (?), then send the NAWS to make sure that we are set up for */
- /* the right window size. */
- if (TerminalWindowSize(&newrows, &newcols) && connected &&
- (err || ((oldrows != newrows) || (oldcols != newcols)))) {
- sendnaws();
- }
- /* reget parameters in case they were changed */
- TerminalSaveState();
- setconnmode(0);
- #else
- printf("Suspend is not supported. Try the '!' command insteadn");
- #endif
- return 1;
- }
- #ifndef TN3270
- int shell(int argc, char *argv[]) {
- long oldrows, oldcols, newrows, newcols, err;
- setcommandmode();
- err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
- switch(vfork()) {
- case -1:
- perror("Fork failedn");
- break;
- case 0:
- {
- /* Fire up the shell in the child. */
- register char *shellp, *shellname;
- shellp = getenv("SHELL");
- if (shellp == NULL) shellp = "/bin/sh";
- if ((shellname = strrchr(shellp, '/')) == 0) shellname = shellp;
- else shellname++;
- if (argc > 1) execl(shellp, shellname, "-c", &saveline[1], 0);
- else execl(shellp, shellname, 0);
- perror("Execl");
- _exit(1);
- }
- default:
- wait(NULL); /* Wait for the shell to complete */
- if (TerminalWindowSize(&newrows, &newcols) && connected &&
- (err || ((oldrows != newrows) || (oldcols != newcols)))) {
- sendnaws();
- }
- break;
- }
- return 1;
- }
- #else
- extern int shell();
- #endif
- /* The SLC command. */
- struct slclist {
- char *name;
- char *help;
- void (*handler)();
- int arg;
- };
- static void slc_help();
- struct slclist SlcList[] = {
- { "export", "Use local special character definitions", slc_mode_export, 0 },
- { "import", "Use remote special character definitions", slc_mode_import, 1 },
- { "check", "Verify remote special character definitions", slc_mode_import, 0 },
- { "help", 0, slc_help, 0 },
- { "?", "Print help information", slc_help, 0 },
- { 0 },
- };
- static void slc_help() {
- struct slclist *c;
- for (c = SlcList; c->name; c++) {
- if (c->help) {
- if (*c->help) printf("%-15s %sn", c->name, c->help);
- else printf("n");
- }
- }
- }
- static struct slclist *getslc(char *name) {
- return (struct slclist *) genget(name, (char **) SlcList, sizeof(struct slclist));
- }
- static int slccmd(int argc, char *argv[]) {
- struct slclist *c;
- if (argc != 2) {
- fprintf(stderr, "Need an argument to 'slc' command. 'slc ?' for help.n");
- return 0;
- }
- c = getslc(argv[1]);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('slc ?' for help).n", argv[1]);
- return 0;
- }
- if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).n", argv[1]);
- return 0;
- }
- (*c->handler)(c->arg);
- slcstate();
- return 1;
- }
- /* The ENVIRON command. */
- struct envlist {
- char *name;
- char *help;
- void (*handler)();
- int narg;
- };
- extern struct env_lst *
- env_define P((unsigned char *, unsigned char *));
- extern void
- env_undefine P((unsigned char *)),
- env_export P((unsigned char *)),
- env_unexport P((unsigned char *)),
- env_send P((unsigned char *)),
- #if defined(OLD_ENVIRON) && defined(ENV_HACK)
- env_varval P((unsigned char *)),
- #endif
- env_list P((void));
- static void
- env_help P((void));
- struct envlist EnvList[] = {
- { "define", "Define an environment variable",
- (void (*)())env_define, 2 },
- { "undefine", "Undefine an environment variable",
- env_undefine, 1 },
- { "export", "Mark an environment variable for automatic export",
- env_export, 1 },
- { "unexport", "Don't mark an environment variable for automatic export",
- env_unexport, 1 },
- { "send", "Send an environment variable", env_send, 1 },
- { "list", "List the current environment variables",
- env_list, 0 },
- #if defined(OLD_ENVIRON) && defined(ENV_HACK)
- { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)",
- env_varval, 1 },
- #endif
- { "help", 0, env_help, 0 },
- { "?", "Print help information", env_help, 0 },
- { 0 },
- };
- static void env_help() {
- struct envlist *c;
- for (c = EnvList; c->name; c++) {
- if (c->help) {
- if (*c->help) printf("%-15s %sn", c->name, c->help);
- else printf("n");
- }
- }
- }
- static struct envlist *getenvcmd(char *name) {
- return (struct envlist *)genget(name, (char **) EnvList, sizeof(struct envlist));
- }
- int env_cmd(int argc, char *argv[]) {
- struct envlist *c;
- if (argc < 2) {
- fprintf(stderr, "Need an argument to 'environ' command. 'environ ?' for help.n");
- return 0;
- }
- c = getenvcmd(argv[1]);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('environ ?' for help).n", argv[1]);
- return 0;
- }
- if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).n", argv[1]);
- return 0;
- }
- if (c->narg + 2 != argc) {
- fprintf(stderr, "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.n",
- c->narg < argc + 2 ? "only " : "", c->narg, c->narg == 1 ? "" : "s", c->name);
- return 0;
- }
- (*c->handler)(argv[2], argv[3]);
- return 1;
- }
- struct env_lst {
- struct env_lst *next; /* pointer to next structure */
- struct env_lst *prev; /* pointer to previous structure */
- unsigned char *var; /* pointer to variable name */
- unsigned char *value; /* pointer to variable value */
- int export; /* 1 -> export with default list of variables */
- int welldefined; /* A well defined variable */
- };
- struct env_lst envlisthead;
- struct env_lst *env_find(unsigned char *var) {
- register struct env_lst *ep;
- for (ep = envlisthead.next; ep; ep = ep->next) {
- if (strcmp((char *)ep->var, (char *)var) == 0)
- return(ep);
- }
- return(NULL);
- }
- void env_init() {
- extern char **environ;
- register char **epp, *cp;
- register struct env_lst *ep;
- for (epp = environ; *epp; epp++) {
- if ((cp = strchr(*epp, '='))) {
- *cp = ' ';
- ep = env_define((unsigned char *)*epp, (unsigned char *)cp+1);
- ep->export = 0;
- *cp = '=';
- }
- }
- /* Special case for DISPLAY variable. If it is ":0.0" or "unix:0.0", we */
- /* have to get rid of "unix" and insert our hostname. */
- if ((ep = env_find("DISPLAY")) && ((*ep->value == ':') || (strncmp((char *)ep->value, "unix:", 5) == 0))) {
- char hbuf[256+1];
- char *cp2 = strchr((char *)ep->value, ':');
- gethostname(hbuf, 256);
- hbuf[256] = ' ';
- cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1);
- sprintf((char *)cp, "%s%s", hbuf, cp2);
- free(ep->value);
- ep->value = (unsigned char *)cp;
- }
- /* If USER is not defined, but LOGNAME is, then add USER with the value */
- /* from LOGNAME. By default, we don't export the USER variable. */
- if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
- env_define((unsigned char *)"USER", ep->value);
- env_unexport((unsigned char *)"USER");
- }
- env_export((unsigned char *)"DISPLAY");
- env_export((unsigned char *)"PRINTER");
- }
- struct env_lst *env_define(unsigned char *var, unsigned char *value) {
- register struct env_lst *ep;
- if ((ep = env_find(var))) {
- if (ep->var) free(ep->var);
- if (ep->value) free(ep->value);
- } else {
- ep = (struct env_lst *)malloc(sizeof(struct env_lst));
- ep->next = envlisthead.next;
- envlisthead.next = ep;
- ep->prev = &envlisthead;
- if (ep->next) ep->next->prev = ep;
- }
- ep->welldefined = opt_welldefined((char *)var);
- ep->export = 1;
- ep->var = (unsigned char *)strdup((char *)var);
- ep->value = (unsigned char *)strdup((char *)value);
- return(ep);
- }
- void env_undefine(unsigned char *var) {
- register struct env_lst *ep;
- if ((ep = env_find(var))) {
- ep->prev->next = ep->next;
- if (ep->next) ep->next->prev = ep->prev;
- if (ep->var) free(ep->var);
- if (ep->value) free(ep->value);
- free(ep);
- }
- }
- void env_export(unsigned char *var) {
- register struct env_lst *ep;
- if ((ep = env_find(var))) ep->export = 1;
- }
- void env_unexport(unsigned char *var) {
- register struct env_lst *ep;
- if ((ep = env_find(var))) ep->export = 0;
- }
- void env_send(unsigned char *var) {
- register struct env_lst *ep;
- if (my_state_is_wont(TELOPT_NEW_ENVIRON)
- #ifdef OLD_ENVIRON
- && my_state_is_wont(TELOPT_OLD_ENVIRON)
- #endif
- ) {
- fprintf(stderr, "Cannot send '%s': Telnet ENVIRON option not enabledn", var);
- return;
- }
- ep = env_find(var);
- if (ep == 0) {
- fprintf(stderr, "Cannot send '%s': variable not definedn", var);
- return;
- }
- env_opt_start_info();
- env_opt_add(ep->var);
- env_opt_end(0);
- }
- void env_list() {
- register struct env_lst *ep;
- for (ep = envlisthead.next; ep; ep = ep->next) {
- printf("%c %-20s %sn", ep->export ? '*' : ' ', ep->var, ep->value);
- }
- }
- unsigned char *
- env_default(init, welldefined)
- int init, welldefined;
- {
- static struct env_lst *nep = NULL;
- if (init) {
- nep = &envlisthead;
- return NULL;
- }
- if (nep) {
- while ((nep = nep->next)) {
- if (nep->export && (nep->welldefined == welldefined))
- return(nep->var);
- }
- }
- return(NULL);
- }
- unsigned char *
- env_getvalue(var)
- unsigned char *var;
- {
- register struct env_lst *ep;
- if ((ep = env_find(var)))
- return(ep->value);
- return(NULL);
- }
- #if defined(OLD_ENVIRON) && defined(ENV_HACK)
- void
- env_varval(what)
- unsigned char *what;
- {
- extern int old_env_var, old_env_value, env_auto;
- int len = strlen((char *)what);
- if (len == 0)
- goto unknown;
- if (strncasecmp((char *)what, "status", len) == 0) {
- if (env_auto)
- printf("%s%s", "VAR and VALUE are/will be ",
- "determined automaticallyn");
- if (old_env_var == OLD_ENV_VAR)
- printf("VAR and VALUE set to correct definitionsn");
- else
- printf("VAR and VALUE definitions are reversedn");
- } else if (strncasecmp((char *)what, "auto", len) == 0) {
- env_auto = 1;
- old_env_var = OLD_ENV_VALUE;
- old_env_value = OLD_ENV_VAR;
- } else if (strncasecmp((char *)what, "right", len) == 0) {
- env_auto = 0;
- old_env_var = OLD_ENV_VAR;
- old_env_value = OLD_ENV_VALUE;
- } else if (strncasecmp((char *)what, "wrong", len) == 0) {
- env_auto = 0;
- old_env_var = OLD_ENV_VALUE;
- old_env_value = OLD_ENV_VAR;
- } else {
- unknown:
- printf("Unknown "varval" command. ("auto", "right", "wrong", "status")n");
- }
- }
- #endif
- #ifdef TN3270
- static void
- filestuff(fd)
- int fd;
- {
- int res;
- #ifdef F_GETOWN
- setconnmode(0);
- res = fcntl(fd, F_GETOWN, 0);
- setcommandmode();
- if (res == -1) {
- perror("fcntl");
- return;
- }
- printf("tOwner is %d.n", res);
- #endif
- setconnmode(0);
- res = fcntl(fd, F_GETFL, 0);
- setcommandmode();
- if (res == -1) {
- perror("fcntl");
- return;
- }
- #ifdef notdef
- printf("tFlags are 0x%x: %sn", res, decodeflags(res));
- #endif
- }
- #endif
- /*
- * Print status about the connection.
- */
- /*ARGSUSED*/
- static int
- status(argc, argv)
- int argc;
- char *argv[];
- {
- if (connected) {
- printf("Connected to %s.n", hostname);
- if ((argc < 2) || strcmp(argv[1], "notmuch")) {
- int mode = getconnmode();
- if (my_want_state_is_will(TELOPT_LINEMODE)) {
- printf("Operating with LINEMODE optionn");
- printf("%s line editingn", (mode&MODE_EDIT) ? "Local" : "No");
- printf("%s catching of signalsn",
- (mode&MODE_TRAPSIG) ? "Local" : "No");
- slcstate();
- #ifdef KLUDGELINEMODE
- } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
- printf("Operating in obsolete linemoden");
- #endif
- } else {
- printf("Operating in single character moden");
- if (localchars)
- printf("Catching signals locallyn");
- }
- printf("%s character echon", (mode&MODE_ECHO) ? "Local" : "Remote");
- if (my_want_state_is_will(TELOPT_LFLOW))
- printf("%s flow controln", (mode&MODE_FLOW) ? "Local" : "No");
- }
- } else {
- printf("No connection.n");
- }
- #ifndef TN3270
- printf("Escape character is '%s'.n", control(escape));
- (void) fflush(stdout);
- # else /* !defined(TN3270) */
- if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) {
- printf("Escape character is '%s'.n", control(escape));
- }
- if ((argc >= 2) && !strcmp(argv[1], "everything")) {
- printf("SIGIO received %d time%s.n",
- sigiocount, (sigiocount == 1)? "":"s");
- if (In3270) {
- printf("Process ID %d, process group %d.n",
- getpid(), getpgrp(getpid()));
- printf("Terminal input:n");
- filestuff(tin);
- printf("Terminal output:n");
- filestuff(tout);
- printf("Network socket:n");
- filestuff(net);
- }
- }
- if (In3270 && transcom) {
- printf("Transparent mode command is '%s'.n", transcom);
- }
- fflush(stdout);
- if (In3270) return 0;
- # endif /* defined(TN3270) */
- return 1;
- }
- #ifdef SIGINFO
- /*
- * Function that gets called when SIGINFO is received.
- */
- void
- ayt_status()
- {
- (void) call(status, "status", "notmuch", 0);
- }
- #endif
- int
- tn(argc, argv)
- int argc;
- char *argv[];
- {
- register struct hostent *host = 0;
- struct sockaddr_in sin;
- struct servent *sp = 0;
- unsigned int temp;
- #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
- char *srp = 0;
- unsigned int sourceroute(), srlen;
- #endif
- char *cmd, *hostp = 0, *portp = 0, *user = 0;
- /* clear the socket address prior to use */
- memset((char *)&sin, 0, sizeof(sin));
- if (connected) {
- printf("?Already connected to %sn", hostname);
- setuid(getuid());
- return 0;
- }
- if (argc < 2) {
- (void) strcpy(line, "open ");
- printf("(to) ");
- (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin);
- makeargv();
- argc = margc;
- argv = margv;
- }
- cmd = *argv;
- --argc; ++argv;
- while (argc) {
- if (isprefix(*argv, "help") || isprefix(*argv, "?"))
- goto usage;
- if (strcmp(*argv, "-l") == 0) {
- --argc; ++argv;
- if (argc == 0)
- goto usage;
- user = *argv++;
- --argc;
- continue;
- }
- if (strcmp(*argv, "-a") == 0) {
- --argc; ++argv;
- autologin = 1;
- continue;
- }
- if (hostp == 0) {
- hostp = *argv++;
- --argc;
- continue;
- }
- if (portp == 0) {
- portp = *argv++;
- --argc;
- continue;
- }
- usage:
- printf("usage: %s [-l user] [-a] host-name [port]n", cmd);
- setuid(getuid());
- return 0;
- }
- if (hostp == 0)
- goto usage;
- #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
- if (hostp[0] == '@' || hostp[0] == '!') {
- if ((hostname = strrchr(hostp, ':')) == NULL)
- hostname = strrchr(hostp, '@');
- hostname++;
- srp = 0;
- temp = sourceroute(hostp, &srp, &srlen);
- if (temp == 0) {
- herror(srp);
- setuid(getuid());
- return 0;
- } else if (temp == -1) {
- printf("Bad source route option: %sn", hostp);
- setuid(getuid());
- return 0;
- } else {
- sin.sin_addr.s_addr = temp;
- sin.sin_family = AF_INET;
- }
- } else {
- #endif
- temp = (unsigned int)inet_addr(hostp);
- if (temp != (unsigned int) -1) {
- sin.sin_addr.s_addr = temp;
- sin.sin_family = AF_INET;
- (void) strcpy(_hostname, hostp);
- hostname = _hostname;
- } else {
- host = gethostbyname(hostp);
- if (host) {
- sin.sin_family = host->h_addrtype;
- #ifdef h_addr /* In 4.3, this is a #define */
- memmove((caddr_t)&sin.sin_addr,
- host->h_addr_list[0], host->h_length);
- #else /* defined(h_addr) */
- memmove((caddr_t)&sin.sin_addr, host->h_addr, host->h_length);
- #endif /* defined(h_addr) */
- strncpy(_hostname, host->h_name, sizeof(_hostname));
- _hostname[sizeof(_hostname)-1] = ' ';
- hostname = _hostname;
- } else {
- herror(hostp);
- setuid(getuid());
- return 0;
- }
- }
- #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
- }
- #endif
- if (portp) {
- if (*portp == '-') {
- portp++;
- telnetport = 1;
- } else
- telnetport = 0;
- sin.sin_port = atoi(portp);
- if (sin.sin_port == 0) {
- sp = getservbyname(portp, "tcp");
- if (sp)
- sin.sin_port = sp->s_port;
- else {
- printf("%s: bad port numbern", portp);
- setuid(getuid());
- return 0;
- }
- } else {
- sin.sin_port = htons(sin.sin_port);
- }
- } else {
- if (sp == 0) {
- sp = getservbyname("telnet", "tcp");
- if (sp == 0) {
- fprintf(stderr, "telnet: tcp/telnet: unknown servicen");
- setuid(getuid());
- return 0;
- }
- sin.sin_port = sp->s_port;
- }
- telnetport = 1;
- }
- printf("Trying %s...n", inet_ntoa(sin.sin_addr));
- do {
- net = socket(AF_INET, SOCK_STREAM, 0);
- setuid(getuid());
- if (net < 0) {
- perror("telnet: socket");
- 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
- #if defined(IPPROTO_IP) && defined(IP_TOS)
- {
- #ifdef HAS_GETTOS
- struct tosent *tp;
- if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
- tos = tp->t_tos;
- # endif
- if (tos < 0)
- tos = 020; /* Low Delay bit */
- if (tos
- && (setsockopt(net, IPPROTO_IP, IP_TOS,
- (char *)&tos, sizeof(int)) < 0)
- && (errno != ENOPROTOOPT))
- perror("telnet: setsockopt (IP_TOS) (ignored)");
- }
- #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
- if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) {
- perror("setsockopt (SO_DEBUG)");
- }
- if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) {
- #ifdef h_addr /* In 4.3, this is a #define */
- if (host && host->h_addr_list[1]) {
- int oerrno = errno;
- fprintf(stderr, "telnet: connect to address %s: ",
- inet_ntoa(sin.sin_addr));
- errno = oerrno;
- perror((char *)0);
- host->h_addr_list++;
- memmove((caddr_t)&sin.sin_addr,
- host->h_addr_list[0], host->h_length);
- NetClose(net);
- continue;
- }
- #endif /* defined(h_addr) */
- perror("telnet: Unable to connect to remote host");
- return 0;
- }
- connected++;
- } while (connected == 0);
- cmdrc(hostp, hostname);
- if (autologin && user == NULL) {
- struct passwd *pw;
- user = getenv("USER");
- if (user == NULL ||
- (((pw = getpwnam(user))) && pw->pw_uid != getuid())) {
- if ((pw = getpwuid(getuid())))
- user = pw->pw_name;
- else
- user = NULL;
- }
- }
- if (user) {
- env_define((unsigned char *)"USER", (unsigned char *)user);
- env_export((unsigned char *)"USER");
- }
- (void) call(status, "status", "notmuch", 0);
- if (setjmp(peerdied) == 0)
- telnet(user);
- NetClose(net);
- ExitString("Connection closed by foreign host.n",1);
- /*NOTREACHED*/
- return 0;
- }
- #define HELPINDENT (sizeof ("connect"))
- static char
- openhelp[] = "connect to a site",
- closehelp[] = "close current connection",
- logouthelp[] = "forcibly logout remote user and close the connection",
- quithelp[] = "exit telnet",
- statushelp[] = "print status information",
- helphelp[] = "print help information",
- sendhelp[] = "transmit special characters ('send ?' for more)",
- sethelp[] = "set operating parameters ('set ?' for more)",
- unsethelp[] = "unset operating parameters ('unset ?' for more)",
- togglestring[] ="toggle operating parameters ('toggle ?' for more)",
- slchelp[] = "change state of special charaters ('slc ?' for more)",
- displayhelp[] = "display operating parameters",
- #ifdef TN3270
- transcomhelp[] = "specify Unix command for transparent mode pipe",
- #endif /* defined(TN3270) */
- zhelp[] = "suspend telnet",
- shellhelp[] = "invoke a subshell",
- envhelp[] = "change environment variables ('environ ?' for more)",
- modestring[] = "try to enter line or character mode ('mode ?' for more)";
- static int help();
- static Command cmdtab[] = {
- { "close", closehelp, bye, 1 },
- { "logout", logouthelp, logout, 1 },
- { "display", displayhelp, display, 0 },
- { "mode", modestring, modecmd, 0 },
- { "open", openhelp, tn, 0 },
- { "quit", quithelp, quit, 0 },
- { "send", sendhelp, sendcmd, 0 },
- { "set", sethelp, setcmd, 0 },
- { "unset", unsethelp, unsetcmd, 0 },
- { "status", statushelp, status, 0 },
- { "toggle", togglestring, toggle, 0 },
- { "slc", slchelp, slccmd, 0 },
- #ifdef TN3270
- { "transcom", transcomhelp, settranscom, 0 },
- #endif /* defined(TN3270) */
- { "z", zhelp, suspend, 0 },
- #ifdef TN3270
- { "!", shellhelp, shell, 1 },
- #else
- { "!", shellhelp, shell, 0 },
- #endif
- { "environ", envhelp, env_cmd, 0 },
- { "?", helphelp, help, 0 },
- { 0 }
- };
- static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
- static char escapehelp[] = "deprecated command -- use 'set escape' instead";
- static Command cmdtab2[] = {
- { "help", 0, help, 0 },
- { "escape", escapehelp, setescape, 0 },
- { "crmod", crmodhelp, togcrmod, 0 },
- { 0 }
- };
- /*
- * Call routine with argc, argv set from args (terminated by 0).
- */
- /*VARARGS1*/
- static int
- call(va_alist)
- va_dcl
- {
- va_list ap;
- typedef int (*intrtn_t)();
- intrtn_t routine;
- char *args[100];
- int argno = 0;
- va_start(ap);
- routine = (va_arg(ap, intrtn_t));
- while ((args[argno++] = va_arg(ap, char *)) != 0) {
- ;
- }
- va_end(ap);
- return (*routine)(argno-1, args);
- }
- static Command *
- getcmd(name)
- char *name;
- {
- Command *cm;
- if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))))
- return cm;
- return (Command *) genget(name, (char **) cmdtab2, sizeof(Command));
- }
- void
- command(top, tbuf, cnt)
- int top;
- char *tbuf;
- int cnt;
- {
- register Command *c;
- setcommandmode();
- if (!top) {
- putchar('n');
- } else {
- Signal(SIGINT, SIG_DFL);
- Signal(SIGQUIT, SIG_DFL);
- }
- for (;;) {
- if (rlogin == _POSIX_VDISABLE)
- printf("%s> ", prompt);
- if (tbuf) {
- register char *cp;
- cp = line;
- while (cnt > 0 && (*cp++ = *tbuf++) != 'n')
- cnt--;
- tbuf = 0;
- if (cp == line || *--cp != 'n' || cp == line)
- goto getline;
- *cp = ' ';
- if (rlogin == _POSIX_VDISABLE)
- printf("%sn", line);
- } else {
- getline:
- if (rlogin != _POSIX_VDISABLE)
- printf("%s> ", prompt);
- if (fgets(line, sizeof(line), stdin) == NULL) {
- if (feof(stdin) || ferror(stdin)) {
- (void) quit();
- /*NOTREACHED*/
- }
- break;
- }
- }
- if (line[0] == 0)
- break;
- makeargv();
- if (margv[0] == 0) {
- break;
- }
- c = getcmd(margv[0]);
- if (Ambiguous(c)) {
- printf("?Ambiguous commandn");
- continue;
- }
- if (c == 0) {
- printf("?Invalid commandn");
- continue;
- }
- if (c->needconnect && !connected) {
- printf("?Need to be connected first.n");
- continue;
- }
- if ((*c->handler)(margc, margv)) {
- break;
- }
- }
- if (!top) {
- if (!connected) {
- longjmp(toplevel, 1);
- /*NOTREACHED*/
- }
- #ifdef TN3270
- if (shell_active == 0) {
- setconnmode(0);
- }
- #else /* defined(TN3270) */
- setconnmode(0);
- #endif /* defined(TN3270) */
- }
- }
- /*
- * Help command.
- */
- static int
- help(argc, argv)
- int argc;
- char *argv[];
- {
- register Command *c;
- if (argc == 1) {
- printf("Commands may be abbreviated. Commands are:nn");
- for (c = cmdtab; c->name; c++)
- if (c->help) {
- printf("%-*st%sn", (int)HELPINDENT, c->name, c->help);
- }
- return 0;
- }
- while (--argc > 0) {
- register char *arg;
- arg = *++argv;
- c = getcmd(arg);
- if (Ambiguous(c))
- printf("?Ambiguous help command %sn", arg);
- else if (c == (Command *)0)
- printf("?Invalid help command %sn", arg);
- else
- printf("%sn", c->help);
- }
- return 0;
- }
- static char *rcname = 0;
- static char rcbuf[128];
- void
- cmdrc(m1, m2)
- char *m1, *m2;
- {
- register Command *c;
- FILE *rcfile;
- int gotmachine = 0;
- int l1 = strlen(m1);
- int l2 = strlen(m2);
- char m1save[64];
- if (skiprc)
- return;
- strcpy(m1save, m1);
- m1 = m1save;
- if (rcname == 0) {
- rcname = getenv("HOME");
- if (rcname)
- strcpy(rcbuf, rcname);
- else
- rcbuf[0] = ' ';
- strcat(rcbuf, "/.telnetrc");
- rcname = rcbuf;
- }
- if ((rcfile = fopen(rcname, "r")) == 0) {
- return;
- }
- for (;;) {
- if (fgets(line, sizeof(line), rcfile) == NULL)
- break;
- if (line[0] == 0)
- break;
- if (line[0] == '#')
- continue;
- if (gotmachine) {
- if (!isspace(line[0]))
- gotmachine = 0;
- }
- if (gotmachine == 0) {
- if (isspace(line[0]))
- continue;
- if (strncasecmp(line, m1, l1) == 0)
- strncpy(line, &line[l1], sizeof(line) - l1);
- else if (strncasecmp(line, m2, l2) == 0)
- strncpy(line, &line[l2], sizeof(line) - l2);
- else if (strncasecmp(line, "DEFAULT", 7) == 0)
- strncpy(line, &line[7], sizeof(line) - 7);
- else
- continue;
- if (line[0] != ' ' && line[0] != 't' && line[0] != 'n')
- continue;
- gotmachine = 1;
- }
- makeargv();
- if (margv[0] == 0)
- continue;
- c = getcmd(margv[0]);
- if (Ambiguous(c)) {
- printf("?Ambiguous command: %sn", margv[0]);
- continue;
- }
- if (c == 0) {
- printf("?Invalid command: %sn", margv[0]);
- continue;
- }
- /*
- * This should never happen...
- */
- if (c->needconnect && !connected) {
- printf("?Need to be connected first for %s.n", margv[0]);
- continue;
- }
- (*c->handler)(margc, margv);
- }
- fclose(rcfile);
- }
- #if defined(IP_OPTIONS) && defined(IPPROTO_IP)
- /*
- * Source route is handed in as
- * [!]@hop1@hop2...[@|:]dst
- * If the leading ! is present, it is a
- * strict source route, otherwise it is
- * assmed to be a loose source route.
- *
- * We fill in the source route option as
- * hop1,hop2,hop3...dest
- * and return a pointer to hop1, which will
- * be the address to connect() to.
- *
- * Arguments:
- * arg: pointer to route list to decipher
- *
- * cpp: If *cpp is not equal to NULL, this is a
- * pointer to a pointer to a character array
- * that should be filled in with the option.
- *
- * lenp: pointer to an integer that contains the
- * length of *cpp if *cpp != NULL.
- *
- * Return values:
- *
- * Returns the address of the host to connect to. If the
- * return value is -1, there was a syntax error in the
- * option, either unknown characters, or too many hosts.
- * If the return value is 0, one of the hostnames in the
- * path is unknown, and *cpp is set to point to the bad
- * hostname.
- *
- * *cpp: If *cpp was equal to NULL, it will be filled
- * in with a pointer to our static area that has
- * the option filled in. This will be 32bit aligned.
- *
- * *lenp: This will be filled in with how long the option
- * pointed to by *cpp is.
- *
- */
- unsigned int
- sourceroute(arg, cpp, lenp)
- char *arg;
- char **cpp;
- int *lenp;
- {
- static char lsr[44];
- #ifdef sysV88
- static IOPTN ipopt;
- #endif
- char *cp, *cp2, *lsrp, *lsrep;
- register int tmp;
- struct in_addr sin_addr;
- register struct hostent *host = 0;
- register char c;
- /*
- * Verify the arguments, and make sure we have
- * at least 7 bytes for the option.
- */
- if (cpp == NULL || lenp == NULL)
- return((unsigned int)-1);
- if (*cpp != NULL && *lenp < 7)
- return((unsigned int)-1);
- /*
- * Decide whether we have a buffer passed to us,
- * or if we need to use our own static buffer.
- */
- if (*cpp) {
- lsrp = *cpp;
- lsrep = lsrp + *lenp;
- } else {
- *cpp = lsrp = lsr;
- lsrep = lsrp + 44;
- }
- cp = arg;
- /*
- * Next, decide whether we have a loose source
- * route or a strict source route, and fill in
- * the begining of the option.
- */
- #ifndef sysV88
- if (*cp == '!') {
- cp++;
- *lsrp++ = IPOPT_SSRR;
- } else
- *lsrp++ = IPOPT_LSRR;
- #else
- if (*cp == '!') {
- cp++;
- ipopt.io_type = IPOPT_SSRR;
- } else
- ipopt.io_type = IPOPT_LSRR;
- #endif
- if (*cp != '@')
- return((unsigned int)-1);
- #ifndef sysV88
- lsrp++; /* skip over length, we'll fill it in later */
- *lsrp++ = 4;
- #endif
- cp++;
- sin_addr.s_addr = 0;
- for (c = 0;;) {
- if (c == ':')
- cp2 = 0;
- else for (cp2 = cp; (c = *cp2); cp2++) {
- if (c == ',') {
- *cp2++ = ' ';
- if (*cp2 == '@')
- cp2++;
- } else if (c == '@') {
- *cp2++ = ' ';
- } else if (c == ':') {
- *cp2++ = ' ';
- } else
- continue;
- break;
- }
- if (!c)
- cp2 = 0;
- if ((tmp = inet_addr(cp)) != -1) {
- sin_addr.s_addr = tmp;
- } else if ((host = gethostbyname(cp))) {
- #ifdef h_addr
- memmove((caddr_t)&sin_addr,
- host->h_addr_list[0], host->h_length);
- #else
- memmove((caddr_t)&sin_addr, host->h_addr, host->h_length);
- #endif
- } else {
- *cpp = cp;
- return(0);
- }
- memmove(lsrp, (char *)&sin_addr, 4);
- lsrp += 4;
- if (cp2)
- cp = cp2;
- else
- break;
- /*
- * Check to make sure there is space for next address
- */
- if (lsrp + 4 > lsrep)
- return((unsigned int)-1);
- }
- #ifndef sysV88
- if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
- *cpp = 0;
- *lenp = 0;
- return((unsigned int)-1);
- }
- *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
- *lenp = lsrp - *cpp;
- #else
- ipopt.io_len = lsrp - *cpp;
- if (ipopt.io_len <= 5) { /* Is 3 better ? */
- *cpp = 0;
- *lenp = 0;
- return((unsigned int)-1);
- }
- *lenp = sizeof(ipopt);
- *cpp = (char *) &ipopt;
- #endif
- return(sin_addr.s_addr);
- }
- #endif