2740 lines
64 KiB
C
2740 lines
64 KiB
C
/*
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* Copyright (c) 1988, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef lint
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static const char sccsid[] = "@(#)commands.c 8.4 (Berkeley) 5/30/95";
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#endif
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#include <sys/param.h>
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#include <sys/un.h>
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#include <sys/file.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <arpa/telnet.h>
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#include <arpa/inet.h>
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#include "general.h"
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#include "ring.h"
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#include "externs.h"
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#include "defines.h"
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#include "types.h"
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#include "misc.h"
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 256
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#endif
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typedef int (*intrtn_t)(int, char **);
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#if defined(IPPROTO_IP) && defined(IP_TOS)
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int tos = -1;
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#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
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char *hostname;
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static char _hostname[MAXHOSTNAMELEN];
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static int help(int, char **);
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static int call(intrtn_t, ...);
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static void cmdrc(char *, char *);
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#ifdef INET6
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static int switch_af(struct addrinfo **);
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#endif
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static int togglehelp(void);
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static int send_tncmd(void (*)(int, int), const char *, char *);
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static int setmod(int);
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static int clearmode(int);
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static int modehelp(void);
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static int sourceroute(struct addrinfo *, char *, char **, int *, int *, int *);
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typedef struct {
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const char *name; /* command name */
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const char *help; /* help string (NULL for no help) */
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int (*handler)(int, char **); /* routine which executes command */
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int needconnect; /* Do we need to be connected to execute? */
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} Command;
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static char line[256];
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static char saveline[256];
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static int margc;
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static char *margv[20];
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#ifdef OPIE
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#include <sys/wait.h>
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#define PATH_OPIEKEY "/usr/bin/opiekey"
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static int
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opie_calc(int argc, char *argv[])
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{
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int status;
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if(argc != 3) {
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printf("%s sequence challenge\n", argv[0]);
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return (0);
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}
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switch(fork()) {
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case 0:
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execv(PATH_OPIEKEY, argv);
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exit (1);
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case -1:
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perror("fork");
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break;
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default:
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(void) wait(&status);
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if (WIFEXITED(status))
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return (WEXITSTATUS(status));
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}
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return (0);
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}
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#endif
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static void
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makeargv(void)
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{
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char *cp, *cp2, c;
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char **argp = margv;
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margc = 0;
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cp = line;
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if (*cp == '!') { /* Special case shell escape */
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strcpy(saveline, line); /* save for shell command */
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*argp++ = strdup("!"); /* No room in string to get this */
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margc++;
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cp++;
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}
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while ((c = *cp)) {
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int inquote = 0;
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while (isspace(c))
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c = *++cp;
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if (c == '\0')
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break;
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*argp++ = cp;
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margc += 1;
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for (cp2 = cp; c != '\0'; c = *++cp) {
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if (inquote) {
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if (c == inquote) {
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inquote = 0;
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continue;
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}
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} else {
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if (c == '\\') {
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if ((c = *++cp) == '\0')
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break;
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} else if (c == '"') {
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inquote = '"';
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continue;
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} else if (c == '\'') {
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inquote = '\'';
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continue;
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} else if (isspace(c))
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break;
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}
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*cp2++ = c;
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}
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*cp2 = '\0';
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if (c == '\0')
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break;
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cp++;
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}
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*argp++ = 0;
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}
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/*
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* Make a character string into a number.
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*
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* Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
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*/
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static int
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special(char *s)
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{
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char c;
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char b;
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switch (*s) {
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case '^':
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b = *++s;
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if (b == '?') {
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c = b | 0x40; /* DEL */
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} else {
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c = b & 0x1f;
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}
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break;
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default:
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c = *s;
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break;
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}
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return c;
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}
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/*
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* Construct a control character sequence
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* for a special character.
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*/
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static const char *
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control(cc_t c)
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{
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static char buf[5];
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/*
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* The only way I could get the Sun 3.5 compiler
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||
* to shut up about
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||
* if ((unsigned int)c >= 0x80)
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* was to assign "c" to an unsigned int variable...
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* Arggg....
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*/
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unsigned int uic = (unsigned int)c;
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if (uic == 0x7f)
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return ("^?");
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if (c == (cc_t)_POSIX_VDISABLE) {
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return "off";
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}
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if (uic >= 0x80) {
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buf[0] = '\\';
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buf[1] = ((c>>6)&07) + '0';
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buf[2] = ((c>>3)&07) + '0';
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buf[3] = (c&07) + '0';
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buf[4] = 0;
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} else if (uic >= 0x20) {
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buf[0] = c;
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buf[1] = 0;
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} else {
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buf[0] = '^';
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buf[1] = '@'+c;
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buf[2] = 0;
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}
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return (buf);
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}
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/*
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* The following are data structures and routines for
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* the "send" command.
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*
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*/
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struct sendlist {
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const char *name; /* How user refers to it (case independent) */
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const char *help; /* Help information (0 ==> no help) */
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int needconnect; /* Need to be connected */
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int narg; /* Number of arguments */
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int (*handler)(char *, ...); /* Routine to perform (for special ops) */
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int nbyte; /* Number of bytes to send this command */
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int what; /* Character to be sent (<0 ==> special) */
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};
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static int
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send_esc(void),
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send_help(void),
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send_docmd(char *),
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send_dontcmd(char *),
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send_willcmd(char *),
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send_wontcmd(char *);
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static struct sendlist Sendlist[] = {
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{ "ao", "Send Telnet Abort output", 1, 0, NULL, 2, AO },
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{ "ayt", "Send Telnet 'Are You There'", 1, 0, NULL, 2, AYT },
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{ "brk", "Send Telnet Break", 1, 0, NULL, 2, BREAK },
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{ "break", NULL, 1, 0, NULL, 2, BREAK },
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{ "ec", "Send Telnet Erase Character", 1, 0, NULL, 2, EC },
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{ "el", "Send Telnet Erase Line", 1, 0, NULL, 2, EL },
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{ "escape", "Send current escape character",1, 0, (int (*)(char *, ...))send_esc, 1, 0 },
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{ "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, NULL, 2, GA },
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{ "ip", "Send Telnet Interrupt Process",1, 0, NULL, 2, IP },
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{ "intp", NULL, 1, 0, NULL, 2, IP },
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{ "interrupt", NULL, 1, 0, NULL, 2, IP },
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{ "intr", NULL, 1, 0, NULL, 2, IP },
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{ "nop", "Send Telnet 'No operation'", 1, 0, NULL, 2, NOP },
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{ "eor", "Send Telnet 'End of Record'", 1, 0, NULL, 2, EOR },
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{ "abort", "Send Telnet 'Abort Process'", 1, 0, NULL, 2, ABORT },
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{ "susp", "Send Telnet 'Suspend Process'",1, 0, NULL, 2, SUSP },
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{ "eof", "Send Telnet End of File Character", 1, 0, NULL, 2, xEOF },
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{ "synch", "Perform Telnet 'Synch operation'", 1, 0, (int (*)(char *, ...))dosynch, 2, 0 },
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{ "getstatus", "Send request for STATUS", 1, 0, (int (*)(char *, ...))get_status, 6, 0 },
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{ "?", "Display send options", 0, 0, (int (*)(char *, ...))send_help, 0, 0 },
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{ "help", NULL, 0, 0, (int (*)(char *, ...))send_help, 0, 0 },
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{ "do", NULL, 0, 1, (int (*)(char *, ...))send_docmd, 3, 0 },
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{ "dont", NULL, 0, 1, (int (*)(char *, ...))send_dontcmd, 3, 0 },
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{ "will", NULL, 0, 1, (int (*)(char *, ...))send_willcmd, 3, 0 },
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{ "wont", NULL, 0, 1, (int (*)(char *, ...))send_wontcmd, 3, 0 },
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{ NULL, NULL, 0, 0, NULL, 0, 0 }
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};
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#define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \
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sizeof(struct sendlist)))
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static int
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sendcmd(int argc, char *argv[])
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{
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int count; /* how many bytes we are going to need to send */
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||
int i;
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||
struct sendlist *s; /* pointer to current command */
|
||
int success = 0;
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||
int needconnect = 0;
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||
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if (argc < 2) {
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printf("need at least one argument for 'send' command\n");
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printf("'send ?' for help\n");
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return 0;
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||
}
|
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/*
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* First, validate all the send arguments.
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* In addition, we see how much space we are going to need, and
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* whether or not we will be doing a "SYNCH" operation (which
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* flushes the network queue).
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*/
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count = 0;
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||
for (i = 1; i < argc; i++) {
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s = GETSEND(argv[i]);
|
||
if (s == 0) {
|
||
printf("Unknown send argument '%s'\n'send ?' for help.\n",
|
||
argv[i]);
|
||
return 0;
|
||
} else if (Ambiguous((void *)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 ((void *)s->handler == (void *)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 help\n");
|
||
return 0;
|
||
}
|
||
/* Now, do we have enough room? */
|
||
if (NETROOM() < count) {
|
||
printf("There is not enough room in the buffer TO the network\n");
|
||
printf("to process your request. Nothing will be done.\n");
|
||
printf("('send synch' will throw away most data in the network\n");
|
||
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");
|
||
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(void)
|
||
{
|
||
NETADD(escape);
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
send_docmd(char *name)
|
||
{
|
||
return(send_tncmd(send_do, "do", name));
|
||
}
|
||
|
||
static int
|
||
send_dontcmd(name)
|
||
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_tncmd(void (*func)(int, int), const char *cmd, char *name)
|
||
{
|
||
char **cpp;
|
||
extern char *telopts[];
|
||
int val = 0;
|
||
|
||
if (isprefix(name, "help") || isprefix(name, "?")) {
|
||
int col, len;
|
||
|
||
printf("usage: send %s <value|option>\n", cmd);
|
||
printf("\"value\" must be from 0 to 255\n");
|
||
printf("Valid options are:\n\t");
|
||
|
||
col = 8;
|
||
for (cpp = telopts; *cpp; cpp++) {
|
||
len = strlen(*cpp) + 3;
|
||
if (col + len > 65) {
|
||
printf("\n\t");
|
||
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 {
|
||
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_help(void)
|
||
{
|
||
struct sendlist *s; /* pointer to current command */
|
||
for (s = Sendlist; s->name; s++) {
|
||
if (s->help)
|
||
printf("%-15s %s\n", 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(void)
|
||
{
|
||
donelclchars = 1;
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
togdebug(void)
|
||
{
|
||
#ifndef NOT43
|
||
if (net > 0 &&
|
||
(SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) {
|
||
perror("setsockopt (SO_DEBUG)");
|
||
}
|
||
#else /* NOT43 */
|
||
if (debug) {
|
||
if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0)
|
||
perror("setsockopt (SO_DEBUG)");
|
||
} else
|
||
printf("Cannot turn off socket debugging\n");
|
||
#endif /* NOT43 */
|
||
return 1;
|
||
}
|
||
|
||
|
||
static int
|
||
togcrlf(void)
|
||
{
|
||
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;
|
||
}
|
||
|
||
struct togglelist {
|
||
const char *name; /* name of toggle */
|
||
const char *help; /* help message */
|
||
int (*handler)(int); /* routine to do actual setting */
|
||
int *variable;
|
||
const 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>",
|
||
(int (*)(int))togcrlf,
|
||
&crlf,
|
||
0 },
|
||
{ "crmod",
|
||
"mapping of received carriage returns",
|
||
0,
|
||
&crmod,
|
||
"map carriage return on output" },
|
||
{ "localchars",
|
||
"local recognition of certain control characters",
|
||
(int (*)(int))lclchars,
|
||
&localchars,
|
||
"recognize certain control characters" },
|
||
{ " ", "", NULL, NULL, NULL }, /* empty line */
|
||
{ "debug",
|
||
"debugging",
|
||
(int (*)(int))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" },
|
||
{ "?",
|
||
NULL,
|
||
(int (*)(int))togglehelp,
|
||
NULL,
|
||
NULL },
|
||
{ NULL, NULL, NULL, NULL, NULL },
|
||
{ "help",
|
||
NULL,
|
||
(int (*)(int))togglehelp,
|
||
NULL,
|
||
NULL },
|
||
{ NULL, NULL, NULL, NULL, NULL }
|
||
};
|
||
|
||
static int
|
||
togglehelp(void)
|
||
{
|
||
struct togglelist *c;
|
||
|
||
for (c = Togglelist; c->name; c++) {
|
||
if (c->help) {
|
||
if (*c->help)
|
||
printf("%-15s toggle %s\n", c->name, c->help);
|
||
else
|
||
printf("\n");
|
||
}
|
||
}
|
||
printf("\n");
|
||
printf("%-15s %s\n", "?", "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 %s\n", 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((void *)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, 0, 0, 0, {}, 0, 0 };
|
||
#endif
|
||
|
||
struct setlist {
|
||
const char *name; /* name */
|
||
const char *help; /* help information */
|
||
void (*handler)(char *);
|
||
cc_t *charp; /* where it is located at */
|
||
};
|
||
|
||
static struct setlist Setlist[] = {
|
||
#ifdef KLUDGELINEMODE
|
||
{ "echo", "character to toggle local echoing on/off", NULL, &echoc },
|
||
#endif
|
||
{ "escape", "character to escape back to telnet command mode", NULL, &escape },
|
||
{ "rlogin", "rlogin escape character", 0, &rlogin },
|
||
{ "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
|
||
{ " ", "", NULL, NULL },
|
||
{ " ", "The following need 'localchars' to be toggled true", NULL, NULL },
|
||
{ "flushoutput", "character to cause an Abort Output", NULL, termFlushCharp },
|
||
{ "interrupt", "character to cause an Interrupt Process", NULL, termIntCharp },
|
||
{ "quit", "character to cause an Abort process", NULL, termQuitCharp },
|
||
{ "eof", "character to cause an EOF ", NULL, termEofCharp },
|
||
{ " ", "", NULL, NULL },
|
||
{ " ", "The following are for local editing in linemode", NULL, NULL },
|
||
{ "erase", "character to use to erase a character", NULL, termEraseCharp },
|
||
{ "kill", "character to use to erase a line", NULL, termKillCharp },
|
||
{ "lnext", "character to use for literal next", NULL, termLiteralNextCharp },
|
||
{ "susp", "character to cause a Suspend Process", NULL, termSuspCharp },
|
||
{ "reprint", "character to use for line reprint", NULL, termRprntCharp },
|
||
{ "worderase", "character to use to erase a word", NULL, termWerasCharp },
|
||
{ "start", "character to use for XON", NULL, termStartCharp },
|
||
{ "stop", "character to use for XOFF", NULL, termStopCharp },
|
||
{ "forw1", "alternate end of line character", NULL, termForw1Charp },
|
||
{ "forw2", "alternate end of line character", NULL, termForw2Charp },
|
||
{ "ayt", "alternate AYT character", NULL, termAytCharp },
|
||
{ NULL, NULL, NULL, NULL }
|
||
};
|
||
|
||
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 %s\n", ct->name, ct->help);
|
||
printf("\n");
|
||
settogglehelp(1);
|
||
printf("%-15s %s\n", "?", "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((void *)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((void *)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;
|
||
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 %s\n", ct->name, ct->help);
|
||
printf("\n");
|
||
settogglehelp(0);
|
||
printf("%-15s %s\n", "?", "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((void *)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((void *)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(void)
|
||
{
|
||
kludgelinemode = 1;
|
||
send_wont(TELOPT_LINEMODE, 1);
|
||
send_dont(TELOPT_SGA, 1);
|
||
send_dont(TELOPT_ECHO, 1);
|
||
return 1;
|
||
}
|
||
#endif
|
||
|
||
static int
|
||
dolinemode(void)
|
||
{
|
||
#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(void)
|
||
{
|
||
#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
|
||
setmod(int bit)
|
||
{
|
||
return dolmmode(bit, 1);
|
||
}
|
||
|
||
static int
|
||
clearmode(int bit)
|
||
{
|
||
return dolmmode(bit, 0);
|
||
}
|
||
|
||
struct modelist {
|
||
const char *name; /* command name */
|
||
const char *help; /* help string */
|
||
int (*handler)(int);/* routine which executes command */
|
||
int needconnect; /* Do we need to be connected to execute? */
|
||
int arg1;
|
||
};
|
||
|
||
static struct modelist ModeList[] = {
|
||
{ "character", "Disable LINEMODE option", (int (*)(int))docharmode, 1, 0 },
|
||
#ifdef KLUDGELINEMODE
|
||
{ "", "(or disable obsolete line-by-line mode)", NULL, 0, 0 },
|
||
#endif
|
||
{ "line", "Enable LINEMODE option", (int (*)(int))dolinemode, 1, 0 },
|
||
#ifdef KLUDGELINEMODE
|
||
{ "", "(or enable obsolete line-by-line mode)", NULL, 0, 0 },
|
||
#endif
|
||
{ "", "", NULL, 0, 0 },
|
||
{ "", "These require the LINEMODE option to be enabled", NULL, 0, 0 },
|
||
{ "isig", "Enable signal trapping", setmod, 1, MODE_TRAPSIG },
|
||
{ "+isig", 0, setmod, 1, MODE_TRAPSIG },
|
||
{ "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG },
|
||
{ "edit", "Enable character editing", setmod, 1, MODE_EDIT },
|
||
{ "+edit", 0, setmod, 1, MODE_EDIT },
|
||
{ "-edit", "Disable character editing", clearmode, 1, MODE_EDIT },
|
||
{ "softtabs", "Enable tab expansion", setmod, 1, MODE_SOFT_TAB },
|
||
{ "+softtabs", 0, setmod, 1, MODE_SOFT_TAB },
|
||
{ "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB },
|
||
{ "litecho", "Enable literal character echo", setmod, 1, MODE_LIT_ECHO },
|
||
{ "+litecho", 0, setmod, 1, MODE_LIT_ECHO },
|
||
{ "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO },
|
||
{ "help", 0, (int (*)(int))modehelp, 0, 0 },
|
||
#ifdef KLUDGELINEMODE
|
||
{ "kludgeline", 0, (int (*)(int))dokludgemode, 1, 0 },
|
||
#endif
|
||
{ "", "", NULL, 0, 0 },
|
||
{ "?", "Print help information", (int (*)(int))modehelp, 0, 0 },
|
||
{ NULL, NULL, NULL, 0, 0 },
|
||
};
|
||
|
||
|
||
static int
|
||
modehelp(void)
|
||
{
|
||
struct modelist *mt;
|
||
|
||
printf("format is: 'mode Mode', where 'Mode' is one of:\n\n");
|
||
for (mt = ModeList; mt->name; mt++) {
|
||
if (mt->help) {
|
||
if (*mt->help)
|
||
printf("%-15s %s\n", 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 argument\n");
|
||
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((void *)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((void *)sl) || Ambiguous((void *)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[])
|
||
{
|
||
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: ");
|
||
(void) fgets(buf, sizeof(buf), stdin);
|
||
arg = buf;
|
||
}
|
||
if (arg[0] != '\0')
|
||
escape = arg[0];
|
||
(void) fflush(stdout);
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
togcrmod(void)
|
||
{
|
||
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");
|
||
(void) fflush(stdout);
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
suspend(void)
|
||
{
|
||
#ifdef SIGTSTP
|
||
setcommandmode();
|
||
{
|
||
long oldrows, oldcols, newrows, newcols, err_;
|
||
|
||
err_ = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
|
||
(void) 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 instead\n");
|
||
#endif
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
shell(int argc, char *argv[] __unused)
|
||
{
|
||
long oldrows, oldcols, newrows, newcols, err_;
|
||
|
||
setcommandmode();
|
||
|
||
err_ = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
|
||
switch(vfork()) {
|
||
case -1:
|
||
perror("Fork failed\n");
|
||
break;
|
||
|
||
case 0:
|
||
{
|
||
/*
|
||
* Fire up the shell in the child.
|
||
*/
|
||
const 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], (char *)0);
|
||
else
|
||
execl(shellp, shellname, (char *)0);
|
||
perror("Execl");
|
||
_exit(1);
|
||
}
|
||
default:
|
||
(void)wait((int *)0); /* Wait for the shell to complete */
|
||
|
||
if (TerminalWindowSize(&newrows, &newcols) && connected &&
|
||
(err_ || ((oldrows != newrows) || (oldcols != newcols)))) {
|
||
sendnaws();
|
||
}
|
||
break;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
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();
|
||
}
|
||
if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
|
||
longjmp(toplevel, 1);
|
||
/* NOTREACHED */
|
||
}
|
||
return 1; /* Keep lint, etc., happy */
|
||
}
|
||
|
||
void
|
||
quit(void)
|
||
{
|
||
(void) call(bye, "bye", "fromquit", 0);
|
||
Exit(0);
|
||
}
|
||
|
||
static int
|
||
logout(void)
|
||
{
|
||
send_do(TELOPT_LOGOUT, 1);
|
||
(void) netflush();
|
||
return 1;
|
||
}
|
||
|
||
|
||
/*
|
||
* The SLC command.
|
||
*/
|
||
|
||
struct slclist {
|
||
const char *name;
|
||
const char *help;
|
||
void (*handler)(int);
|
||
int arg;
|
||
};
|
||
|
||
static void slc_help(void);
|
||
|
||
struct slclist SlcList[] = {
|
||
{ "export", "Use local special character definitions",
|
||
(void (*)(int))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", NULL, (void (*)(int))slc_help, 0 },
|
||
{ "?", "Print help information", (void (*)(int))slc_help, 0 },
|
||
{ NULL, NULL, NULL, 0 },
|
||
};
|
||
|
||
static void
|
||
slc_help(void)
|
||
{
|
||
struct slclist *c;
|
||
|
||
for (c = SlcList; c->name; c++) {
|
||
if (c->help) {
|
||
if (*c->help)
|
||
printf("%-15s %s\n", 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((void *)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 {
|
||
const char *name;
|
||
const char *help;
|
||
void (*handler)(unsigned char *, unsigned char *);
|
||
int narg;
|
||
};
|
||
|
||
extern struct env_lst *
|
||
env_define(const unsigned char *, unsigned char *);
|
||
extern void
|
||
env_undefine(unsigned char *),
|
||
env_export(const unsigned char *),
|
||
env_unexport(const unsigned char *),
|
||
env_send(unsigned char *),
|
||
#if defined(OLD_ENVIRON) && defined(ENV_HACK)
|
||
env_varval(unsigned char *),
|
||
#endif
|
||
env_list(void);
|
||
static void
|
||
env_help(void);
|
||
|
||
struct envlist EnvList[] = {
|
||
{ "define", "Define an environment variable",
|
||
(void (*)(unsigned char *, unsigned char *))env_define, 2 },
|
||
{ "undefine", "Undefine an environment variable",
|
||
(void (*)(unsigned char *, unsigned char *))env_undefine, 1 },
|
||
{ "export", "Mark an environment variable for automatic export",
|
||
(void (*)(unsigned char *, unsigned char *))env_export, 1 },
|
||
{ "unexport", "Don't mark an environment variable for automatic export",
|
||
(void (*)(unsigned char *, unsigned char *))env_unexport, 1 },
|
||
{ "send", "Send an environment variable", (void (*)(unsigned char *, unsigned char *))env_send, 1 },
|
||
{ "list", "List the current environment variables",
|
||
(void (*)(unsigned char *, unsigned char *))env_list, 0 },
|
||
#if defined(OLD_ENVIRON) && defined(ENV_HACK)
|
||
{ "varval", "Reverse VAR and VALUE (auto, right, wrong, status)",
|
||
(void (*)(unsigned char *, unsigned char *))env_varval, 1 },
|
||
#endif
|
||
{ "help", NULL, (void (*)(unsigned char *, unsigned char *))env_help, 0 },
|
||
{ "?", "Print help information", (void (*)(unsigned char *, unsigned char *))env_help, 0 },
|
||
{ NULL, NULL, NULL, 0 },
|
||
};
|
||
|
||
static void
|
||
env_help(void)
|
||
{
|
||
struct envlist *c;
|
||
|
||
for (c = EnvList; c->name; c++) {
|
||
if (c->help) {
|
||
if (*c->help)
|
||
printf("%-15s %s\n", c->name, c->help);
|
||
else
|
||
printf("\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
static struct envlist *
|
||
getenvcmd(char *name)
|
||
{
|
||
return (struct envlist *)
|
||
genget(name, (char **) EnvList, sizeof(struct envlist));
|
||
}
|
||
|
||
static 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((void *)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;
|
||
|
||
static struct env_lst *
|
||
env_find(const unsigned char *var)
|
||
{
|
||
struct env_lst *ep;
|
||
|
||
for (ep = envlisthead.next; ep; ep = ep->next) {
|
||
if (strcmp(ep->var, var) == 0)
|
||
return(ep);
|
||
}
|
||
return(NULL);
|
||
}
|
||
|
||
void
|
||
env_init(void)
|
||
{
|
||
extern char **environ;
|
||
char **epp, *cp;
|
||
struct env_lst *ep;
|
||
|
||
for (epp = environ; *epp; epp++) {
|
||
if ((cp = strchr(*epp, '='))) {
|
||
*cp = '\0';
|
||
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] = '\0';
|
||
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("USER", ep->value);
|
||
env_unexport("USER");
|
||
}
|
||
env_export("DISPLAY");
|
||
env_export("PRINTER");
|
||
}
|
||
|
||
struct env_lst *
|
||
env_define(const unsigned char *var, unsigned char *value)
|
||
{
|
||
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(var);
|
||
ep->export = 1;
|
||
ep->var = strdup(var);
|
||
ep->value = strdup(value);
|
||
return(ep);
|
||
}
|
||
|
||
void
|
||
env_undefine(unsigned char *var)
|
||
{
|
||
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(const unsigned char *var)
|
||
{
|
||
struct env_lst *ep;
|
||
|
||
if ((ep = env_find(var)))
|
||
ep->export = 1;
|
||
}
|
||
|
||
void
|
||
env_unexport(const unsigned char *var)
|
||
{
|
||
struct env_lst *ep;
|
||
|
||
if ((ep = env_find(var)))
|
||
ep->export = 0;
|
||
}
|
||
|
||
void
|
||
env_send(unsigned char *var)
|
||
{
|
||
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 enabled\n",
|
||
var);
|
||
return;
|
||
}
|
||
ep = env_find(var);
|
||
if (ep == 0) {
|
||
fprintf(stderr, "Cannot send '%s': variable not defined\n",
|
||
var);
|
||
return;
|
||
}
|
||
env_opt_start_info();
|
||
env_opt_add(ep->var);
|
||
env_opt_end(0);
|
||
}
|
||
|
||
void
|
||
env_list(void)
|
||
{
|
||
struct env_lst *ep;
|
||
|
||
for (ep = envlisthead.next; ep; ep = ep->next) {
|
||
printf("%c %-20s %s\n", ep->export ? '*' : ' ',
|
||
ep->var, ep->value);
|
||
}
|
||
}
|
||
|
||
unsigned char *
|
||
env_default(int init, int 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(const unsigned char *var)
|
||
{
|
||
struct env_lst *ep;
|
||
|
||
if ((ep = env_find(var)))
|
||
return(ep->value);
|
||
return(NULL);
|
||
}
|
||
|
||
#if defined(OLD_ENVIRON) && defined(ENV_HACK)
|
||
void
|
||
env_varval(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 automatically\n");
|
||
if (old_env_var == OLD_ENV_VAR)
|
||
printf("VAR and VALUE set to correct definitions\n");
|
||
else
|
||
printf("VAR and VALUE definitions are reversed\n");
|
||
} 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
|
||
|
||
|
||
|
||
/*
|
||
* Print status about the connection.
|
||
*/
|
||
/*ARGSUSED*/
|
||
static int
|
||
status(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 option\n");
|
||
printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No");
|
||
printf("%s catching of signals\n",
|
||
(mode&MODE_TRAPSIG) ? "Local" : "No");
|
||
slcstate();
|
||
#ifdef KLUDGELINEMODE
|
||
} else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
|
||
printf("Operating in obsolete linemode\n");
|
||
#endif
|
||
} else {
|
||
printf("Operating in single character mode\n");
|
||
if (localchars)
|
||
printf("Catching signals locally\n");
|
||
}
|
||
printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote");
|
||
if (my_want_state_is_will(TELOPT_LFLOW))
|
||
printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No");
|
||
}
|
||
} else {
|
||
printf("No connection.\n");
|
||
}
|
||
printf("Escape character is '%s'.\n", control(escape));
|
||
(void) fflush(stdout);
|
||
return 1;
|
||
}
|
||
|
||
#ifdef SIGINFO
|
||
/*
|
||
* Function that gets called when SIGINFO is received.
|
||
*/
|
||
void
|
||
ayt_status(void)
|
||
{
|
||
(void) call(status, "status", "notmuch", 0);
|
||
}
|
||
#endif
|
||
|
||
static const char *
|
||
sockaddr_ntop(struct sockaddr *sa)
|
||
{
|
||
void *addr;
|
||
static char addrbuf[INET6_ADDRSTRLEN];
|
||
|
||
switch (sa->sa_family) {
|
||
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;
|
||
break;
|
||
#endif
|
||
default:
|
||
return NULL;
|
||
}
|
||
inet_ntop(sa->sa_family, addr, addrbuf, sizeof(addrbuf));
|
||
return addrbuf;
|
||
}
|
||
|
||
#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
|
||
static int
|
||
setpolicy(int lnet, struct addrinfo *res, char *policy)
|
||
{
|
||
char *buf;
|
||
int level;
|
||
int optname;
|
||
|
||
if (policy == NULL)
|
||
return 0;
|
||
|
||
buf = ipsec_set_policy(policy, strlen(policy));
|
||
if (buf == NULL) {
|
||
printf("%s\n", ipsec_strerror());
|
||
return -1;
|
||
}
|
||
level = res->ai_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6;
|
||
optname = res->ai_family == AF_INET ? IP_IPSEC_POLICY : IPV6_IPSEC_POLICY;
|
||
if (setsockopt(lnet, level, optname, buf, ipsec_get_policylen(buf)) < 0){
|
||
perror("setsockopt");
|
||
return -1;
|
||
}
|
||
|
||
free(buf);
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
#ifdef INET6
|
||
/*
|
||
* When an Address Family related error happend, check if retry with
|
||
* another AF is possible or not.
|
||
* Return 1, if retry with another af is OK. Else, return 0.
|
||
*/
|
||
static int
|
||
switch_af(struct addrinfo **aip)
|
||
{
|
||
int nextaf;
|
||
struct addrinfo *ai;
|
||
|
||
ai = *aip;
|
||
nextaf = (ai->ai_family == AF_INET) ? AF_INET6 : AF_INET;
|
||
do
|
||
ai=ai->ai_next;
|
||
while (ai != NULL && ai->ai_family != nextaf);
|
||
*aip = ai;
|
||
if (*aip != NULL) {
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
int
|
||
tn(int argc, char *argv[])
|
||
{
|
||
char *srp = 0;
|
||
int proto, opt;
|
||
int srlen;
|
||
int srcroute = 0, result;
|
||
char *cmd, *hostp = 0, *portp = 0, *user = 0;
|
||
char *src_addr = NULL;
|
||
struct addrinfo hints, *res, *res0 = NULL, *src_res, *src_res0 = NULL;
|
||
int error = 0, af_error = 0;
|
||
|
||
if (connected) {
|
||
printf("?Already connected to %s\n", 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 (strcmp(*argv, "help") == 0 || 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 (strcmp(*argv, "-s") == 0) {
|
||
--argc; ++argv;
|
||
if (argc == 0)
|
||
goto usage;
|
||
src_addr = *argv++;
|
||
--argc;
|
||
continue;
|
||
}
|
||
if (hostp == 0) {
|
||
hostp = *argv++;
|
||
--argc;
|
||
continue;
|
||
}
|
||
if (portp == 0) {
|
||
portp = *argv++;
|
||
--argc;
|
||
continue;
|
||
}
|
||
usage:
|
||
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) {
|
||
memset(&hints, 0, sizeof(hints));
|
||
hints.ai_family = family;
|
||
hints.ai_socktype = SOCK_STREAM;
|
||
error = getaddrinfo(src_addr, 0, &hints, &src_res);
|
||
if (error == EAI_NODATA) {
|
||
hints.ai_flags = 0;
|
||
error = getaddrinfo(src_addr, 0, &hints, &src_res);
|
||
}
|
||
if (error != 0) {
|
||
fprintf(stderr, "%s: %s\n", src_addr, gai_strerror(error));
|
||
if (error == EAI_SYSTEM)
|
||
fprintf(stderr, "%s: %s\n", src_addr, strerror(errno));
|
||
setuid(getuid());
|
||
return 0;
|
||
}
|
||
src_res0 = src_res;
|
||
}
|
||
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", hostp);
|
||
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 ||
|
||
#endif
|
||
(hostname = strrchr(hostp, ':')) == NULL)
|
||
hostname = strrchr(hostp, '@');
|
||
if (hostname == NULL) {
|
||
hostname = hostp;
|
||
} else {
|
||
hostname++;
|
||
srcroute = 1;
|
||
}
|
||
} else
|
||
hostname = hostp;
|
||
if (!portp) {
|
||
telnetport = 1;
|
||
portp = strdup("telnet");
|
||
} else if (*portp == '-') {
|
||
portp++;
|
||
telnetport = 1;
|
||
} else
|
||
telnetport = 0;
|
||
|
||
memset(&hints, 0, sizeof(hints));
|
||
hints.ai_flags = AI_NUMERICHOST;
|
||
hints.ai_family = family;
|
||
hints.ai_socktype = SOCK_STREAM;
|
||
error = getaddrinfo(hostname, portp, &hints, &res);
|
||
if (error) {
|
||
hints.ai_flags = AI_CANONNAME;
|
||
error = getaddrinfo(hostname, portp, &hints, &res);
|
||
}
|
||
if (error != 0) {
|
||
fprintf(stderr, "%s: %s\n", hostname, gai_strerror(error));
|
||
if (error == EAI_SYSTEM)
|
||
fprintf(stderr, "%s: %s\n", hostname, strerror(errno));
|
||
setuid(getuid());
|
||
goto fail;
|
||
}
|
||
if (hints.ai_flags == AI_NUMERICHOST) {
|
||
/* hostname has numeric */
|
||
int gni_err = 1;
|
||
|
||
if (doaddrlookup)
|
||
gni_err = getnameinfo(res->ai_addr, res->ai_addr->sa_len,
|
||
_hostname, sizeof(_hostname) - 1, NULL, 0,
|
||
NI_NAMEREQD);
|
||
if (gni_err != 0)
|
||
(void) strncpy(_hostname, hostp, sizeof(_hostname) - 1);
|
||
_hostname[sizeof(_hostname)-1] = '\0';
|
||
hostname = _hostname;
|
||
} else {
|
||
/* hostname has FQDN */
|
||
if (srcroute != 0)
|
||
(void) strncpy(_hostname, hostname, sizeof(_hostname) - 1);
|
||
else if (res->ai_canonname != NULL)
|
||
strcpy(_hostname, res->ai_canonname);
|
||
else
|
||
(void) strncpy(_hostname, hostp, sizeof(_hostname) - 1);
|
||
_hostname[sizeof(_hostname)-1] = '\0';
|
||
hostname = _hostname;
|
||
}
|
||
res0 = res;
|
||
#ifdef INET6
|
||
af_again:
|
||
#endif
|
||
if (srcroute != 0) {
|
||
static char hostbuf[BUFSIZ];
|
||
|
||
if (af_error == 0) { /* save intermediate hostnames for retry */
|
||
strncpy(hostbuf, hostp, BUFSIZ - 1);
|
||
hostbuf[BUFSIZ - 1] = '\0';
|
||
} else
|
||
hostp = hostbuf;
|
||
srp = 0;
|
||
result = sourceroute(res, hostp, &srp, &srlen, &proto, &opt);
|
||
if (result == 0) {
|
||
#ifdef INET6
|
||
if (family == AF_UNSPEC && af_error == 0 &&
|
||
switch_af(&res) == 1) {
|
||
af_error = 1;
|
||
goto af_again;
|
||
}
|
||
#endif
|
||
setuid(getuid());
|
||
goto fail;
|
||
} else if (result == -1) {
|
||
printf("Bad source route option: %s\n", hostp);
|
||
setuid(getuid());
|
||
goto fail;
|
||
}
|
||
}
|
||
do {
|
||
printf("Trying %s...\n", sockaddr_ntop(res->ai_addr));
|
||
net = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
|
||
setuid(getuid());
|
||
if (net < 0) {
|
||
#ifdef INET6
|
||
if (family == AF_UNSPEC && af_error == 0 &&
|
||
switch_af(&res) == 1) {
|
||
af_error = 1;
|
||
goto af_again;
|
||
}
|
||
#endif
|
||
perror("telnet: socket");
|
||
goto fail;
|
||
}
|
||
if (srp && setsockopt(net, proto, opt, (char *)srp, srlen) < 0)
|
||
perror("setsockopt (source route)");
|
||
#if defined(IPPROTO_IP) && defined(IP_TOS)
|
||
if (res->ai_family == PF_INET) {
|
||
# if defined(HAS_GETTOS)
|
||
struct tosent *tp;
|
||
if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
|
||
tos = tp->t_tos;
|
||
# endif
|
||
if (tos < 0)
|
||
tos = IPTOS_LOWDELAY;
|
||
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 (src_addr != NULL) {
|
||
for (src_res = src_res0; src_res != 0; src_res = src_res->ai_next)
|
||
if (src_res->ai_family == res->ai_family)
|
||
break;
|
||
if (src_res == NULL)
|
||
src_res = src_res0;
|
||
if (bind(net, src_res->ai_addr, src_res->ai_addrlen) == -1) {
|
||
#ifdef INET6
|
||
if (family == AF_UNSPEC && af_error == 0 &&
|
||
switch_af(&res) == 1) {
|
||
af_error = 1;
|
||
(void) NetClose(net);
|
||
goto af_again;
|
||
}
|
||
#endif
|
||
perror("bind");
|
||
(void) NetClose(net);
|
||
goto fail;
|
||
}
|
||
}
|
||
#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
|
||
if (setpolicy(net, res, ipsec_policy_in) < 0) {
|
||
(void) NetClose(net);
|
||
goto fail;
|
||
}
|
||
if (setpolicy(net, res, ipsec_policy_out) < 0) {
|
||
(void) NetClose(net);
|
||
goto fail;
|
||
}
|
||
#endif
|
||
|
||
if (connect(net, res->ai_addr, res->ai_addrlen) < 0) {
|
||
struct addrinfo *next;
|
||
|
||
next = res->ai_next;
|
||
/* If already an af failed, only try same af. */
|
||
if (af_error != 0)
|
||
while (next != NULL && next->ai_family != res->ai_family)
|
||
next = next->ai_next;
|
||
warn("connect to address %s", sockaddr_ntop(res->ai_addr));
|
||
if (next != NULL) {
|
||
res = next;
|
||
(void) NetClose(net);
|
||
continue;
|
||
}
|
||
warnx("Unable to connect to remote host");
|
||
(void) NetClose(net);
|
||
goto fail;
|
||
}
|
||
connected++;
|
||
} while (connected == 0);
|
||
freeaddrinfo(res0);
|
||
if (src_res0 != NULL)
|
||
freeaddrinfo(src_res0);
|
||
cmdrc(hostp, hostname);
|
||
af_unix:
|
||
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("USER", user);
|
||
env_export("USER");
|
||
}
|
||
(void) call(status, "status", "notmuch", 0);
|
||
if (setjmp(peerdied) == 0)
|
||
telnet(user);
|
||
(void) NetClose(net);
|
||
ExitString("Connection closed by foreign host.\n",1);
|
||
/*NOTREACHED*/
|
||
fail:
|
||
if (res0 != NULL)
|
||
freeaddrinfo(res0);
|
||
if (src_res0 != NULL)
|
||
freeaddrinfo(src_res0);
|
||
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",
|
||
zhelp[] = "suspend telnet",
|
||
#ifdef OPIE
|
||
opiehelp[] = "compute response to OPIE challenge",
|
||
#endif
|
||
shellhelp[] = "invoke a subshell",
|
||
envhelp[] = "change environment variables ('environ ?' for more)",
|
||
modestring[] = "try to enter line or character mode ('mode ?' for more)";
|
||
|
||
static Command cmdtab[] = {
|
||
{ "close", closehelp, bye, 1 },
|
||
{ "logout", logouthelp, (int (*)(int, char **))logout, 1 },
|
||
{ "display", displayhelp, display, 0 },
|
||
{ "mode", modestring, modecmd, 0 },
|
||
{ "telnet", openhelp, tn, 0 },
|
||
{ "open", openhelp, tn, 0 },
|
||
{ "quit", quithelp, (int (*)(int, char **))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 },
|
||
{ "z", zhelp, (int (*)(int, char **))suspend, 0 },
|
||
{ "!", shellhelp, shell, 1 },
|
||
{ "environ", envhelp, env_cmd, 0 },
|
||
{ "?", helphelp, help, 0 },
|
||
#ifdef OPIE
|
||
{ "opie", opiehelp, opie_calc, 0 },
|
||
#endif
|
||
{ NULL, NULL, NULL, 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, (int (*)(int, char **))togcrmod, 0 },
|
||
{ NULL, NULL, NULL, 0 }
|
||
};
|
||
|
||
|
||
/*
|
||
* Call routine with argc, argv set from args (terminated by 0).
|
||
*/
|
||
|
||
static int
|
||
call(intrtn_t routine, ...)
|
||
{
|
||
va_list ap;
|
||
char *args[100];
|
||
int argno = 0;
|
||
|
||
va_start(ap, routine);
|
||
while ((args[argno++] = va_arg(ap, char *)) != 0);
|
||
va_end(ap);
|
||
return (*routine)(argno-1, args);
|
||
}
|
||
|
||
|
||
static Command *
|
||
getcmd(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(int top, const char *tbuf, int cnt)
|
||
{
|
||
Command *c;
|
||
|
||
setcommandmode();
|
||
if (!top) {
|
||
putchar('\n');
|
||
} else {
|
||
(void) signal(SIGINT, SIG_DFL);
|
||
(void) signal(SIGQUIT, SIG_DFL);
|
||
}
|
||
for (;;) {
|
||
if (rlogin == _POSIX_VDISABLE)
|
||
printf("%s> ", prompt);
|
||
if (tbuf) {
|
||
char *cp;
|
||
cp = line;
|
||
while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
|
||
cnt--;
|
||
tbuf = 0;
|
||
if (cp == line || *--cp != '\n' || cp == line)
|
||
goto getline;
|
||
*cp = '\0';
|
||
if (rlogin == _POSIX_VDISABLE)
|
||
printf("%s\n", 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((void *)c)) {
|
||
printf("?Ambiguous command\n");
|
||
continue;
|
||
}
|
||
if (c == 0) {
|
||
printf("?Invalid command\n");
|
||
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*/
|
||
}
|
||
setconnmode(0);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Help command.
|
||
*/
|
||
static int
|
||
help(int argc, char *argv[])
|
||
{
|
||
Command *c;
|
||
|
||
if (argc == 1) {
|
||
printf("Commands may be abbreviated. Commands are:\n\n");
|
||
for (c = cmdtab; c->name; c++)
|
||
if (c->help) {
|
||
printf("%-*s\t%s\n", (int)HELPINDENT, c->name,
|
||
c->help);
|
||
}
|
||
return 0;
|
||
}
|
||
else while (--argc > 0) {
|
||
char *arg;
|
||
arg = *++argv;
|
||
c = getcmd(arg);
|
||
if (Ambiguous((void *)c))
|
||
printf("?Ambiguous help command %s\n", arg);
|
||
else if (c == (Command *)0)
|
||
printf("?Invalid help command %s\n", arg);
|
||
else
|
||
printf("%s\n", c->help);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static char *rcname = 0;
|
||
static char rcbuf[128];
|
||
|
||
void
|
||
cmdrc(char *m1, char *m2)
|
||
{
|
||
Command *c;
|
||
FILE *rcfile;
|
||
int gotmachine = 0;
|
||
int l1 = strlen(m1);
|
||
int l2 = strlen(m2);
|
||
char m1save[MAXHOSTNAMELEN];
|
||
|
||
if (skiprc)
|
||
return;
|
||
|
||
strlcpy(m1save, m1, sizeof(m1save));
|
||
m1 = m1save;
|
||
|
||
if (rcname == 0) {
|
||
rcname = getenv("HOME");
|
||
if (rcname && (strlen(rcname) + 10) < sizeof(rcbuf))
|
||
strcpy(rcbuf, rcname);
|
||
else
|
||
rcbuf[0] = '\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((void *)c)) {
|
||
printf("?Ambiguous command: %s\n", margv[0]);
|
||
continue;
|
||
}
|
||
if (c == 0) {
|
||
printf("?Invalid command: %s\n", 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);
|
||
}
|
||
|
||
/*
|
||
* 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:
|
||
*
|
||
* res: ponter to addrinfo structure which contains sockaddr to
|
||
* the host to connect to.
|
||
*
|
||
* 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.
|
||
*
|
||
* protop: pointer to an integer that should be filled in with
|
||
* appropriate protocol for setsockopt, as socket
|
||
* protocol family.
|
||
*
|
||
* optp: pointer to an integer that should be filled in with
|
||
* appropriate option for setsockopt, as socket protocol
|
||
* family.
|
||
*
|
||
* Return values:
|
||
*
|
||
* If the return value is 1, then all operations are
|
||
* successful. 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.
|
||
*
|
||
* *protop: This will be filled in with appropriate protocol for
|
||
* setsockopt, as socket protocol family.
|
||
*
|
||
* *optp: This will be filled in with appropriate option for
|
||
* setsockopt, as socket protocol family.
|
||
*/
|
||
static int
|
||
sourceroute(struct addrinfo *ai, char *arg, char **cpp, int *lenp, int *protop, int *optp)
|
||
{
|
||
static char buf[1024 + ALIGNBYTES]; /*XXX*/
|
||
char *cp, *cp2, *lsrp, *ep;
|
||
struct sockaddr_in *_sin;
|
||
#ifdef INET6
|
||
struct sockaddr_in6 *sin6;
|
||
struct cmsghdr *cmsg;
|
||
#endif
|
||
struct addrinfo hints, *res;
|
||
int error;
|
||
char c;
|
||
|
||
/*
|
||
* Verify the arguments, and make sure we have
|
||
* at least 7 bytes for the option.
|
||
*/
|
||
if (cpp == NULL || lenp == NULL)
|
||
return -1;
|
||
if (*cpp != NULL) {
|
||
switch (res->ai_family) {
|
||
case AF_INET:
|
||
if (*lenp < 7)
|
||
return -1;
|
||
break;
|
||
#ifdef INET6
|
||
case AF_INET6:
|
||
if (*lenp < (int)CMSG_SPACE(sizeof(struct ip6_rthdr) +
|
||
sizeof(struct in6_addr)))
|
||
return -1;
|
||
break;
|
||
#endif
|
||
}
|
||
}
|
||
/*
|
||
* Decide whether we have a buffer passed to us,
|
||
* or if we need to use our own static buffer.
|
||
*/
|
||
if (*cpp) {
|
||
lsrp = *cpp;
|
||
ep = lsrp + *lenp;
|
||
} else {
|
||
*cpp = lsrp = (char *)ALIGN(buf);
|
||
ep = lsrp + 1024;
|
||
}
|
||
|
||
cp = arg;
|
||
|
||
#ifdef INET6
|
||
if (ai->ai_family == AF_INET6) {
|
||
cmsg = inet6_rthdr_init(*cpp, IPV6_RTHDR_TYPE_0);
|
||
if (*cp != '@')
|
||
return -1;
|
||
*protop = IPPROTO_IPV6;
|
||
*optp = IPV6_PKTOPTIONS;
|
||
} else
|
||
#endif
|
||
{
|
||
/*
|
||
* Next, decide whether we have a loose source
|
||
* route or a strict source route, and fill in
|
||
* the begining of the option.
|
||
*/
|
||
if (*cp == '!') {
|
||
cp++;
|
||
*lsrp++ = IPOPT_SSRR;
|
||
} else
|
||
*lsrp++ = IPOPT_LSRR;
|
||
|
||
if (*cp != '@')
|
||
return -1;
|
||
|
||
lsrp++; /* skip over length, we'll fill it in later */
|
||
*lsrp++ = 4;
|
||
*protop = IPPROTO_IP;
|
||
*optp = IP_OPTIONS;
|
||
}
|
||
|
||
cp++;
|
||
memset(&hints, 0, sizeof(hints));
|
||
hints.ai_family = ai->ai_family;
|
||
hints.ai_socktype = SOCK_STREAM;
|
||
for (c = 0;;) {
|
||
if (
|
||
#ifdef INET6
|
||
ai->ai_family != AF_INET6 &&
|
||
#endif
|
||
c == ':')
|
||
cp2 = 0;
|
||
else for (cp2 = cp; (c = *cp2); cp2++) {
|
||
if (c == ',') {
|
||
*cp2++ = '\0';
|
||
if (*cp2 == '@')
|
||
cp2++;
|
||
} else if (c == '@') {
|
||
*cp2++ = '\0';
|
||
} else if (
|
||
#ifdef INET6
|
||
ai->ai_family != AF_INET6 &&
|
||
#endif
|
||
c == ':') {
|
||
*cp2++ = '\0';
|
||
} else
|
||
continue;
|
||
break;
|
||
}
|
||
if (!c)
|
||
cp2 = 0;
|
||
|
||
hints.ai_flags = AI_NUMERICHOST;
|
||
error = getaddrinfo(cp, NULL, &hints, &res);
|
||
if (error == EAI_NODATA) {
|
||
hints.ai_flags = 0;
|
||
error = getaddrinfo(cp, NULL, &hints, &res);
|
||
}
|
||
if (error != 0) {
|
||
fprintf(stderr, "%s: %s\n", cp, gai_strerror(error));
|
||
if (error == EAI_SYSTEM)
|
||
fprintf(stderr, "%s: %s\n", cp,
|
||
strerror(errno));
|
||
*cpp = cp;
|
||
return(0);
|
||
}
|
||
#ifdef INET6
|
||
if (res->ai_family == AF_INET6) {
|
||
sin6 = (struct sockaddr_in6 *)res->ai_addr;
|
||
inet6_rthdr_add(cmsg, &sin6->sin6_addr,
|
||
IPV6_RTHDR_LOOSE);
|
||
} else
|
||
#endif
|
||
{
|
||
_sin = (struct sockaddr_in *)res->ai_addr;
|
||
memcpy(lsrp, (char *)&_sin->sin_addr, 4);
|
||
lsrp += 4;
|
||
}
|
||
if (cp2)
|
||
cp = cp2;
|
||
else
|
||
break;
|
||
/*
|
||
* Check to make sure there is space for next address
|
||
*/
|
||
#ifdef INET6
|
||
if (res->ai_family == AF_INET6) {
|
||
if (((char *)CMSG_DATA(cmsg) +
|
||
sizeof(struct ip6_rthdr) +
|
||
((inet6_rthdr_segments(cmsg) + 1) *
|
||
sizeof(struct in6_addr))) > ep)
|
||
return -1;
|
||
} else
|
||
#endif
|
||
if (lsrp + 4 > ep)
|
||
return -1;
|
||
freeaddrinfo(res);
|
||
}
|
||
#ifdef INET6
|
||
if (res->ai_family == AF_INET6) {
|
||
inet6_rthdr_lasthop(cmsg, IPV6_RTHDR_LOOSE);
|
||
*lenp = cmsg->cmsg_len;
|
||
} else
|
||
#endif
|
||
{
|
||
if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
|
||
*cpp = 0;
|
||
*lenp = 0;
|
||
return -1;
|
||
}
|
||
*lsrp++ = IPOPT_NOP; /* 32 bit word align it */
|
||
*lenp = lsrp - *cpp;
|
||
}
|
||
freeaddrinfo(res);
|
||
return 1;
|
||
}
|