mirror of
https://github.com/sheumann/telnetd.git
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0fddcbcf1c
Instead of catching SIGPIPE and jumping out of the signal handler with longjmp, ignore it and handle write errors to the local output by exiting from there. I have changed the error message to mention the local output instead of NetBSD's wrong "Connection closed by foreign host". Write errors to the network were already handled by exiting immediately and this now applies to EPIPE too. The code assumed that SIGPIPE could only be generated by the network connection; if it was generated by the local output, it would longjmp out of the signal handler and write an error message which caused another SIGPIPE. PR: 19773 Obtained from: NetBSD MFC after: 1 week git-svn-id: http://svn0.us-east.freebsd.org/base/head/contrib/telnet@207449 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
3012 lines
71 KiB
C
3012 lines
71 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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#if 0
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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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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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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#ifdef AUTHENTICATION
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#include <libtelnet/auth.h>
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#endif
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#ifdef ENCRYPTION
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#include <libtelnet/encrypt.h>
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#endif
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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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#ifdef AUTHENTICATION
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extern int auth_togdebug(int);
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#endif
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#ifdef ENCRYPTION
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extern int EncryptAutoEnc(int);
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extern int EncryptAutoDec(int);
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extern int EncryptDebug(int);
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extern int EncryptVerbose(int);
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#endif /* ENCRYPTION */
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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 */
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int success = 0;
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int needconnect = 0;
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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]);
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if (s == 0) {
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printf("Unknown send argument '%s'\n'send ?' for help.\n",
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argv[i]);
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return 0;
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} else if (Ambiguous((void *)s)) {
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printf("Ambiguous send argument '%s'\n'send ?' for help.\n",
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argv[i]);
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return 0;
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}
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if (i + s->narg >= argc) {
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fprintf(stderr,
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"Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n",
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s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
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return 0;
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}
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count += s->nbyte;
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if ((void *)s->handler == (void *)send_help) {
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send_help();
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return 0;
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}
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i += s->narg;
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needconnect += s->needconnect;
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}
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if (!connected && needconnect) {
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printf("?Need to be connected first.\n");
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printf("'send ?' for help\n");
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return 0;
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}
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/* Now, do we have enough room? */
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if (NETROOM() < count) {
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printf("There is not enough room in the buffer TO the network\n");
|
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printf("to process your request. Nothing will be done.\n");
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printf("('send synch' will throw away most data in the network\n");
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printf("buffer, if this might help.)\n");
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return 0;
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}
|
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/* OK, they are all OK, now go through again and actually send */
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count = 0;
|
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for (i = 1; i < argc; i++) {
|
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if ((s = GETSEND(argv[i])) == 0) {
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fprintf(stderr, "Telnet 'send' error - argument disappeared!\n");
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quit();
|
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/*NOTREACHED*/
|
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}
|
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if (s->handler) {
|
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count++;
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success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
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(s->narg > 1) ? argv[i+2] : 0);
|
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i += s->narg;
|
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} else {
|
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NET2ADD(IAC, s->what);
|
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printoption("SENT", IAC, s->what);
|
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}
|
||
}
|
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return (count == success);
|
||
}
|
||
|
||
static int
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||
send_esc(void)
|
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{
|
||
NETADD(escape);
|
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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, telnet_debug)) < 0) {
|
||
perror("setsockopt (SO_DEBUG)");
|
||
}
|
||
#else /* NOT43 */
|
||
if (telnet_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" },
|
||
#ifdef AUTHENTICATION
|
||
{ "autologin",
|
||
"automatic sending of login and/or authentication info",
|
||
0,
|
||
&autologin,
|
||
"send login name and/or authentication information" },
|
||
{ "authdebug",
|
||
"Toggle authentication debugging",
|
||
auth_togdebug,
|
||
0,
|
||
"print authentication debugging information" },
|
||
#endif
|
||
#ifdef ENCRYPTION
|
||
{ "autoencrypt",
|
||
"automatic encryption of data stream",
|
||
EncryptAutoEnc,
|
||
0,
|
||
"automatically encrypt output" },
|
||
{ "autodecrypt",
|
||
"automatic decryption of data stream",
|
||
EncryptAutoDec,
|
||
0,
|
||
"automatically decrypt input" },
|
||
{ "verbose_encrypt",
|
||
"Toggle verbose encryption output",
|
||
EncryptVerbose,
|
||
0,
|
||
"print verbose encryption output" },
|
||
{ "encdebug",
|
||
"Toggle encryption debugging",
|
||
EncryptDebug,
|
||
0,
|
||
"print encryption debugging information" },
|
||
#endif /* ENCRYPTION */
|
||
{ "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,
|
||
&telnet_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();
|
||
#ifdef ENCRYPTION
|
||
EncryptStatus();
|
||
#endif /* ENCRYPTION */
|
||
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;
|
||
#ifdef AUTHENTICATION
|
||
#ifdef ENCRYPTION
|
||
auth_encrypt_connect(connected);
|
||
#endif
|
||
#endif
|
||
/* 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
|
||
|
||
#ifdef AUTHENTICATION
|
||
/*
|
||
* The AUTHENTICATE command.
|
||
*/
|
||
|
||
struct authlist {
|
||
const char *name;
|
||
const char *help;
|
||
int (*handler)(char *);
|
||
int narg;
|
||
};
|
||
|
||
extern int
|
||
auth_enable(char *),
|
||
auth_disable(char *),
|
||
auth_status(void);
|
||
static int
|
||
auth_help(void);
|
||
|
||
struct authlist AuthList[] = {
|
||
{ "status", "Display current status of authentication information",
|
||
(int (*)(char *))auth_status, 0 },
|
||
{ "disable", "Disable an authentication type ('auth disable ?' for more)",
|
||
auth_disable, 1 },
|
||
{ "enable", "Enable an authentication type ('auth enable ?' for more)",
|
||
auth_enable, 1 },
|
||
{ "help", NULL, (int (*)(char *))auth_help, 0 },
|
||
{ "?", "Print help information", (int (*)(char *))auth_help, 0 },
|
||
{ NULL, NULL, NULL, 0 },
|
||
};
|
||
|
||
static int
|
||
auth_help(void)
|
||
{
|
||
struct authlist *c;
|
||
|
||
for (c = AuthList; c->name; c++) {
|
||
if (c->help) {
|
||
if (*c->help)
|
||
printf("%-15s %s\n", c->name, c->help);
|
||
else
|
||
printf("\n");
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
auth_cmd(int argc, char *argv[])
|
||
{
|
||
struct authlist *c;
|
||
|
||
if (argc < 2) {
|
||
fprintf(stderr,
|
||
"Need an argument to 'auth' command. 'auth ?' for help.\n");
|
||
return 0;
|
||
}
|
||
|
||
c = (struct authlist *)
|
||
genget(argv[1], (char **) AuthList, sizeof(struct authlist));
|
||
if (c == 0) {
|
||
fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n",
|
||
argv[1]);
|
||
return 0;
|
||
}
|
||
if (Ambiguous((void *)c)) {
|
||
fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n",
|
||
argv[1]);
|
||
return 0;
|
||
}
|
||
if (c->narg + 2 != argc) {
|
||
fprintf(stderr,
|
||
"Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n",
|
||
c->narg < argc + 2 ? "only " : "",
|
||
c->narg, c->narg == 1 ? "" : "s", c->name);
|
||
return 0;
|
||
}
|
||
return((*c->handler)(argv[2]));
|
||
}
|
||
#endif
|
||
|
||
#ifdef ENCRYPTION
|
||
/*
|
||
* The ENCRYPT command.
|
||
*/
|
||
|
||
struct encryptlist {
|
||
const char *name;
|
||
const char *help;
|
||
int (*handler)(char *, char *);
|
||
int needconnect;
|
||
int minarg;
|
||
int maxarg;
|
||
};
|
||
|
||
extern int
|
||
EncryptEnable(char *, char *),
|
||
EncryptDisable(char *, char *),
|
||
EncryptType(char *, char *),
|
||
EncryptStart(char *),
|
||
EncryptStartInput(void),
|
||
EncryptStartOutput(void),
|
||
EncryptStop(char *),
|
||
EncryptStopInput(void),
|
||
EncryptStopOutput(void),
|
||
EncryptStatus(void);
|
||
static int
|
||
EncryptHelp(void);
|
||
|
||
struct encryptlist EncryptList[] = {
|
||
{ "enable", "Enable encryption. ('encrypt enable ?' for more)",
|
||
EncryptEnable, 1, 1, 2 },
|
||
{ "disable", "Disable encryption. ('encrypt enable ?' for more)",
|
||
EncryptDisable, 0, 1, 2 },
|
||
{ "type", "Set encryption type. ('encrypt type ?' for more)",
|
||
EncryptType, 0, 1, 1 },
|
||
{ "start", "Start encryption. ('encrypt start ?' for more)",
|
||
(int (*)(char *, char *))EncryptStart, 1, 0, 1 },
|
||
{ "stop", "Stop encryption. ('encrypt stop ?' for more)",
|
||
(int (*)(char *, char *))EncryptStop, 1, 0, 1 },
|
||
{ "input", "Start encrypting the input stream",
|
||
(int (*)(char *, char *))EncryptStartInput, 1, 0, 0 },
|
||
{ "-input", "Stop encrypting the input stream",
|
||
(int (*)(char *, char *))EncryptStopInput, 1, 0, 0 },
|
||
{ "output", "Start encrypting the output stream",
|
||
(int (*)(char *, char *))EncryptStartOutput, 1, 0, 0 },
|
||
{ "-output", "Stop encrypting the output stream",
|
||
(int (*)(char *, char *))EncryptStopOutput, 1, 0, 0 },
|
||
|
||
{ "status", "Display current status of authentication information",
|
||
(int (*)(char *, char *))EncryptStatus, 0, 0, 0 },
|
||
{ "help", NULL, (int (*)(char *, char *))EncryptHelp, 0, 0, 0 },
|
||
{ "?", "Print help information", (int (*)(char *, char *))EncryptHelp, 0, 0, 0 },
|
||
{ NULL, NULL, NULL, 0, 0, 0 },
|
||
};
|
||
|
||
static int
|
||
EncryptHelp(void)
|
||
{
|
||
struct encryptlist *c;
|
||
|
||
for (c = EncryptList; c->name; c++) {
|
||
if (c->help) {
|
||
if (*c->help)
|
||
printf("%-15s %s\n", c->name, c->help);
|
||
else
|
||
printf("\n");
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
encrypt_cmd(int argc, char *argv[])
|
||
{
|
||
struct encryptlist *c;
|
||
|
||
if (argc < 2) {
|
||
fprintf(stderr,
|
||
"Need an argument to 'encrypt' command. 'encrypt ?' for help.\n");
|
||
return 0;
|
||
}
|
||
|
||
c = (struct encryptlist *)
|
||
genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist));
|
||
if (c == 0) {
|
||
fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\n",
|
||
argv[1]);
|
||
return 0;
|
||
}
|
||
if (Ambiguous((void *)c)) {
|
||
fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\n",
|
||
argv[1]);
|
||
return 0;
|
||
}
|
||
argc -= 2;
|
||
if (argc < c->minarg || argc > c->maxarg) {
|
||
if (c->minarg == c->maxarg) {
|
||
fprintf(stderr, "Need %s%d argument%s ",
|
||
c->minarg < argc ? "only " : "", c->minarg,
|
||
c->minarg == 1 ? "" : "s");
|
||
} else {
|
||
fprintf(stderr, "Need %s%d-%d arguments ",
|
||
c->maxarg < argc ? "only " : "", c->minarg, c->maxarg);
|
||
}
|
||
fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\n",
|
||
c->name);
|
||
return 0;
|
||
}
|
||
if (c->needconnect && !connected) {
|
||
if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) {
|
||
printf("?Need to be connected first.\n");
|
||
return 0;
|
||
}
|
||
}
|
||
return ((*c->handler)(argc > 0 ? argv[2] : 0,
|
||
argc > 1 ? argv[3] : 0));
|
||
}
|
||
#endif /* ENCRYPTION */
|
||
|
||
/*
|
||
* 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");
|
||
#ifdef ENCRYPTION
|
||
encrypt_display();
|
||
#endif /* ENCRYPTION */
|
||
}
|
||
} 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_NONAME) {
|
||
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;
|
||
}
|
||
hostname = hostp;
|
||
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 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 (telnet_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++;
|
||
#ifdef AUTHENTICATION
|
||
#ifdef ENCRYPTION
|
||
auth_encrypt_connect(connected);
|
||
#endif
|
||
#endif
|
||
} while (connected == 0);
|
||
freeaddrinfo(res0);
|
||
if (src_res0 != NULL)
|
||
freeaddrinfo(src_res0);
|
||
cmdrc(hostp, hostname);
|
||
af_unix:
|
||
connected = 1;
|
||
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);
|
||
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",
|
||
#ifdef AUTHENTICATION
|
||
authhelp[] = "turn on (off) authentication ('auth ?' for more)",
|
||
#endif
|
||
#ifdef ENCRYPTION
|
||
encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)",
|
||
#endif /* ENCRYPTION */
|
||
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 },
|
||
#ifdef AUTHENTICATION
|
||
{ "auth", authhelp, auth_cmd, 0 },
|
||
#endif
|
||
#ifdef ENCRYPTION
|
||
{ "encrypt", encrypthelp, encrypt_cmd, 0 },
|
||
#endif /* ENCRYPTION */
|
||
{ "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 ip6_rthdr *rth;
|
||
#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) {
|
||
if ((rth = inet6_rth_init((void *)*cpp, sizeof(buf),
|
||
IPV6_RTHDR_TYPE_0, 0)) == NULL)
|
||
return -1;
|
||
if (*cp != '@')
|
||
return -1;
|
||
*protop = IPPROTO_IPV6;
|
||
*optp = IPV6_RTHDR;
|
||
} 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_NONAME) {
|
||
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;
|
||
if (inet6_rth_add((void *)rth, &sin6->sin6_addr) == -1)
|
||
return(0);
|
||
} 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
|
||
*/
|
||
if (lsrp + 4 > ep)
|
||
return -1;
|
||
freeaddrinfo(res);
|
||
}
|
||
#ifdef INET6
|
||
if (res->ai_family == AF_INET6) {
|
||
rth->ip6r_len = rth->ip6r_segleft * 2;
|
||
*lenp = (rth->ip6r_len + 1) << 3;
|
||
} 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;
|
||
}
|