diff options
Diffstat (limited to 'usr.bin/telnet/commands.c')
-rw-r--r-- | usr.bin/telnet/commands.c | 2739 |
1 files changed, 0 insertions, 2739 deletions
diff --git a/usr.bin/telnet/commands.c b/usr.bin/telnet/commands.c deleted file mode 100644 index 489481f..0000000 --- a/usr.bin/telnet/commands.c +++ /dev/null @@ -1,2739 +0,0 @@ -/* - * Copyright (c) 1988, 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if 0 -#ifndef lint -static const char sccsid[] = "@(#)commands.c 8.4 (Berkeley) 5/30/95"; -#endif -#endif -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/un.h> -#include <sys/file.h> -#include <sys/socket.h> -#include <netinet/in.h> - -#include <ctype.h> -#include <err.h> -#include <errno.h> -#include <netdb.h> -#include <pwd.h> -#include <signal.h> -#include <stdarg.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include <arpa/telnet.h> -#include <arpa/inet.h> - -#include "general.h" - -#include "ring.h" - -#include "externs.h" -#include "defines.h" -#include "types.h" -#include "misc.h" - - -#include <netinet/in_systm.h> -#include <netinet/ip.h> -#include <netinet/ip6.h> - -#ifndef MAXHOSTNAMELEN -#define MAXHOSTNAMELEN 256 -#endif - -typedef int (*intrtn_t)(int, char **); - -#if defined(IPPROTO_IP) && defined(IP_TOS) -int tos = -1; -#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ - -char *hostname; -static char _hostname[MAXHOSTNAMELEN]; - -static int help(int, char **); -static int call(intrtn_t, ...); -static void cmdrc(char *, char *); -#ifdef INET6 -static int switch_af(struct addrinfo **); -#endif -static int togglehelp(void); -static int send_tncmd(void (*)(int, int), const char *, char *); -static int setmod(int); -static int clearmode(int); -static int modehelp(void); -static int sourceroute(struct addrinfo *, char *, char **, int *, int *, int *); - -typedef struct { - const char *name; /* command name */ - const char *help; /* help string (NULL for no help) */ - int (*handler)(int, char **); /* routine which executes command */ - int needconnect; /* Do we need to be connected to execute? */ -} Command; - -static char line[256]; -static char saveline[256]; -static int margc; -static char *margv[20]; - -#ifdef OPIE -#include <sys/wait.h> -#define PATH_OPIEKEY "/usr/bin/opiekey" -static int -opie_calc(int argc, char *argv[]) -{ - int status; - - if(argc != 3) { - printf("%s sequence challenge\n", argv[0]); - return (0); - } - - switch(fork()) { - case 0: - execv(PATH_OPIEKEY, argv); - exit (1); - case -1: - perror("fork"); - break; - default: - (void) wait(&status); - if (WIFEXITED(status)) - return (WEXITSTATUS(status)); - } - return (0); -} -#endif - -static void -makeargv(void) -{ - char *cp, *cp2, c; - char **argp = margv; - - margc = 0; - cp = line; - if (*cp == '!') { /* Special case shell escape */ - strcpy(saveline, line); /* save for shell command */ - *argp++ = strdup("!"); /* No room in string to get this */ - margc++; - cp++; - } - while ((c = *cp)) { - int inquote = 0; - while (isspace(c)) - c = *++cp; - if (c == '\0') - break; - *argp++ = cp; - margc += 1; - for (cp2 = cp; c != '\0'; c = *++cp) { - if (inquote) { - if (c == inquote) { - inquote = 0; - continue; - } - } else { - if (c == '\\') { - if ((c = *++cp) == '\0') - break; - } else if (c == '"') { - inquote = '"'; - continue; - } else if (c == '\'') { - inquote = '\''; - continue; - } else if (isspace(c)) - break; - } - *cp2++ = c; - } - *cp2 = '\0'; - if (c == '\0') - break; - cp++; - } - *argp++ = 0; -} - -/* - * Make a character string into a number. - * - * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). - */ - -static int -special(char *s) -{ - char c; - char b; - - switch (*s) { - case '^': - b = *++s; - if (b == '?') { - c = b | 0x40; /* DEL */ - } else { - c = b & 0x1f; - } - break; - default: - c = *s; - break; - } - return c; -} - -/* - * Construct a control character sequence - * for a special character. - */ -static const char * -control(cc_t c) -{ - static char buf[5]; - /* - * The only way I could get the Sun 3.5 compiler - * to shut up about - * if ((unsigned int)c >= 0x80) - * was to assign "c" to an unsigned int variable... - * Arggg.... - */ - unsigned int uic = (unsigned int)c; - - if (uic == 0x7f) - return ("^?"); - if (c == (cc_t)_POSIX_VDISABLE) { - return "off"; - } - if (uic >= 0x80) { - buf[0] = '\\'; - buf[1] = ((c>>6)&07) + '0'; - buf[2] = ((c>>3)&07) + '0'; - buf[3] = (c&07) + '0'; - buf[4] = 0; - } else if (uic >= 0x20) { - buf[0] = c; - buf[1] = 0; - } else { - buf[0] = '^'; - buf[1] = '@'+c; - buf[2] = 0; - } - return (buf); -} - -/* - * The following are data structures and routines for - * the "send" command. - * - */ - -struct sendlist { - const char *name; /* How user refers to it (case independent) */ - const char *help; /* Help information (0 ==> no help) */ - int needconnect; /* Need to be connected */ - int narg; /* Number of arguments */ - int (*handler)(char *, ...); /* Routine to perform (for special ops) */ - int nbyte; /* Number of bytes to send this command */ - int what; /* Character to be sent (<0 ==> special) */ -}; - - -static int - send_esc(void), - send_help(void), - send_docmd(char *), - send_dontcmd(char *), - send_willcmd(char *), - send_wontcmd(char *); - -static struct sendlist Sendlist[] = { - { "ao", "Send Telnet Abort output", 1, 0, NULL, 2, AO }, - { "ayt", "Send Telnet 'Are You There'", 1, 0, NULL, 2, AYT }, - { "brk", "Send Telnet Break", 1, 0, NULL, 2, BREAK }, - { "break", NULL, 1, 0, NULL, 2, BREAK }, - { "ec", "Send Telnet Erase Character", 1, 0, NULL, 2, EC }, - { "el", "Send Telnet Erase Line", 1, 0, NULL, 2, EL }, - { "escape", "Send current escape character",1, 0, (int (*)(char *, ...))send_esc, 1, 0 }, - { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, NULL, 2, GA }, - { "ip", "Send Telnet Interrupt Process",1, 0, NULL, 2, IP }, - { "intp", NULL, 1, 0, NULL, 2, IP }, - { "interrupt", NULL, 1, 0, NULL, 2, IP }, - { "intr", NULL, 1, 0, NULL, 2, IP }, - { "nop", "Send Telnet 'No operation'", 1, 0, NULL, 2, NOP }, - { "eor", "Send Telnet 'End of Record'", 1, 0, NULL, 2, EOR }, - { "abort", "Send Telnet 'Abort Process'", 1, 0, NULL, 2, ABORT }, - { "susp", "Send Telnet 'Suspend Process'",1, 0, NULL, 2, SUSP }, - { "eof", "Send Telnet End of File Character", 1, 0, NULL, 2, xEOF }, - { "synch", "Perform Telnet 'Synch operation'", 1, 0, (int (*)(char *, ...))dosynch, 2, 0 }, - { "getstatus", "Send request for STATUS", 1, 0, (int (*)(char *, ...))get_status, 6, 0 }, - { "?", "Display send options", 0, 0, (int (*)(char *, ...))send_help, 0, 0 }, - { "help", NULL, 0, 0, (int (*)(char *, ...))send_help, 0, 0 }, - { "do", NULL, 0, 1, (int (*)(char *, ...))send_docmd, 3, 0 }, - { "dont", NULL, 0, 1, (int (*)(char *, ...))send_dontcmd, 3, 0 }, - { "will", NULL, 0, 1, (int (*)(char *, ...))send_willcmd, 3, 0 }, - { "wont", NULL, 0, 1, (int (*)(char *, ...))send_wontcmd, 3, 0 }, - { NULL, NULL, 0, 0, NULL, 0, 0 } -}; - -#define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \ - sizeof(struct sendlist))) - -static int -sendcmd(int argc, char *argv[]) -{ - int count; /* how many bytes we are going to need to send */ - int i; - struct sendlist *s; /* pointer to current command */ - int success = 0; - int needconnect = 0; - - if (argc < 2) { - printf("need at least one argument for 'send' command\n"); - printf("'send ?' for help\n"); - return 0; - } - /* - * First, validate all the send arguments. - * In addition, we see how much space we are going to need, and - * whether or not we will be doing a "SYNCH" operation (which - * flushes the network queue). - */ - count = 0; - for (i = 1; i < argc; i++) { - s = GETSEND(argv[i]); - if (s == 0) { - printf("Unknown send argument '%s'\n'send ?' for help.\n", - argv[i]); - return 0; - } else if (Ambiguous((void *)s)) { - printf("Ambiguous send argument '%s'\n'send ?' for help.\n", - argv[i]); - return 0; - } - if (i + s->narg >= argc) { - fprintf(stderr, - "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n", - s->narg, s->narg == 1 ? "" : "s", s->name, s->name); - return 0; - } - count += s->nbyte; - if ((void *)s->handler == (void *)send_help) { - send_help(); - return 0; - } - - i += s->narg; - needconnect += s->needconnect; - } - if (!connected && needconnect) { - printf("?Need to be connected first.\n"); - printf("'send ?' for help\n"); - return 0; - } - /* Now, do we have enough room? */ - if (NETROOM() < count) { - printf("There is not enough room in the buffer TO the network\n"); - printf("to process your request. Nothing will be done.\n"); - printf("('send synch' will throw away most data in the network\n"); - printf("buffer, if this might help.)\n"); - return 0; - } - /* OK, they are all OK, now go through again and actually send */ - count = 0; - for (i = 1; i < argc; i++) { - if ((s = GETSEND(argv[i])) == 0) { - fprintf(stderr, "Telnet 'send' error - argument disappeared!\n"); - quit(); - /*NOTREACHED*/ - } - if (s->handler) { - count++; - success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0, - (s->narg > 1) ? argv[i+2] : 0); - i += s->narg; - } else { - NET2ADD(IAC, s->what); - printoption("SENT", IAC, s->what); - } - } - return (count == success); -} - -static int -send_esc(void) -{ - NETADD(escape); - return 1; -} - -static int -send_docmd(char *name) -{ - return(send_tncmd(send_do, "do", name)); -} - -static int -send_dontcmd(name) - char *name; -{ - return(send_tncmd(send_dont, "dont", name)); -} - -static int -send_willcmd(char *name) -{ - return(send_tncmd(send_will, "will", name)); -} - -static int -send_wontcmd(char *name) -{ - return(send_tncmd(send_wont, "wont", name)); -} - -static int -send_tncmd(void (*func)(int, int), const char *cmd, char *name) -{ - char **cpp; - extern char *telopts[]; - int val = 0; - - if (isprefix(name, "help") || isprefix(name, "?")) { - int col, len; - - printf("usage: send %s <value|option>\n", cmd); - printf("\"value\" must be from 0 to 255\n"); - printf("Valid options are:\n\t"); - - col = 8; - for (cpp = telopts; *cpp; cpp++) { - len = strlen(*cpp) + 3; - if (col + len > 65) { - printf("\n\t"); - col = 8; - } - printf(" \"%s\"", *cpp); - col += len; - } - printf("\n"); - return 0; - } - cpp = (char **)genget(name, telopts, sizeof(char *)); - if (Ambiguous(cpp)) { - fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\n", - name, cmd); - return 0; - } - if (cpp) { - val = cpp - telopts; - } else { - char *cp = name; - - while (*cp >= '0' && *cp <= '9') { - val *= 10; - val += *cp - '0'; - cp++; - } - if (*cp != 0) { - fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\n", - name, cmd); - return 0; - } else if (val < 0 || val > 255) { - fprintf(stderr, "'%s': bad value ('send %s ?' for help).\n", - name, cmd); - return 0; - } - } - if (!connected) { - printf("?Need to be connected first.\n"); - return 0; - } - (*func)(val, 1); - return 1; -} - -static int -send_help(void) -{ - struct sendlist *s; /* pointer to current command */ - for (s = Sendlist; s->name; s++) { - if (s->help) - printf("%-15s %s\n", s->name, s->help); - } - return(0); -} - -/* - * The following are the routines and data structures referred - * to by the arguments to the "toggle" command. - */ - -static int -lclchars(void) -{ - donelclchars = 1; - return 1; -} - -static int -togdebug(void) -{ -#ifndef NOT43 - if (net > 0 && - (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 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" }, - { "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(); - return 1; -#undef doset -#undef dotog -} - -/* - * The following are the data structures, and many of the routines, - * relating to command processing. - */ - -/* - * Set the escape character. - */ -static int -setescape(int argc, char *argv[]) -{ - char *arg; - char buf[50]; - - printf( - "Deprecated usage - please use 'set escape%s%s' in the future.\n", - (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); - if (argc > 2) - arg = argv[1]; - else { - printf("new escape character: "); - (void) fgets(buf, sizeof(buf), stdin); - arg = buf; - } - if (arg[0] != '\0') - escape = arg[0]; - (void) fflush(stdout); - return 1; -} - -static int -togcrmod(void) -{ - crmod = !crmod; - printf("Deprecated usage - please use 'toggle crmod' in the future.\n"); - printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't"); - (void) fflush(stdout); - return 1; -} - -static int -suspend(void) -{ -#ifdef SIGTSTP - setcommandmode(); - { - long oldrows, oldcols, newrows, newcols, err_; - - err_ = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; - (void) kill(0, SIGTSTP); - /* - * If we didn't get the window size before the SUSPEND, but we - * can get them now (?), then send the NAWS to make sure that - * we are set up for the right window size. - */ - if (TerminalWindowSize(&newrows, &newcols) && connected && - (err_ || ((oldrows != newrows) || (oldcols != newcols)))) { - sendnaws(); - } - } - /* reget parameters in case they were changed */ - TerminalSaveState(); - setconnmode(0); -#else - printf("Suspend is not supported. Try the '!' command instead\n"); -#endif - return 1; -} - -static int -shell(int argc, char *argv[] __unused) -{ - long oldrows, oldcols, newrows, newcols, err_; - - setcommandmode(); - - err_ = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; - switch(vfork()) { - case -1: - perror("Fork failed\n"); - break; - - case 0: - { - /* - * Fire up the shell in the child. - */ - const char *shellp, *shellname; - - shellp = getenv("SHELL"); - if (shellp == NULL) - shellp = "/bin/sh"; - if ((shellname = strrchr(shellp, '/')) == 0) - shellname = shellp; - else - shellname++; - if (argc > 1) - execl(shellp, shellname, "-c", &saveline[1], (char *)0); - else - execl(shellp, shellname, (char *)0); - perror("Execl"); - _exit(1); - } - default: - (void)wait((int *)0); /* Wait for the shell to complete */ - - if (TerminalWindowSize(&newrows, &newcols) && connected && - (err_ || ((oldrows != newrows) || (oldcols != newcols)))) { - sendnaws(); - } - break; - } - return 1; -} - -static int -bye(int argc, char *argv[]) -{ - extern int resettermname; - - if (connected) { - (void) shutdown(net, 2); - printf("Connection closed.\n"); - (void) NetClose(net); - connected = 0; - resettermname = 1; - /* reset options */ - tninit(); - } - if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) { - longjmp(toplevel, 1); - /* NOTREACHED */ - } - return 1; /* Keep lint, etc., happy */ -} - -void -quit(void) -{ - (void) call(bye, "bye", "fromquit", 0); - Exit(0); -} - -static int -logout(void) -{ - send_do(TELOPT_LOGOUT, 1); - (void) netflush(); - return 1; -} - - -/* - * The SLC command. - */ - -struct slclist { - const char *name; - const char *help; - void (*handler)(int); - int arg; -}; - -static void slc_help(void); - -struct slclist SlcList[] = { - { "export", "Use local special character definitions", - (void (*)(int))slc_mode_export, 0 }, - { "import", "Use remote special character definitions", - slc_mode_import, 1 }, - { "check", "Verify remote special character definitions", - slc_mode_import, 0 }, - { "help", NULL, (void (*)(int))slc_help, 0 }, - { "?", "Print help information", (void (*)(int))slc_help, 0 }, - { NULL, NULL, NULL, 0 }, -}; - -static void -slc_help(void) -{ - struct slclist *c; - - for (c = SlcList; c->name; c++) { - if (c->help) { - if (*c->help) - printf("%-15s %s\n", c->name, c->help); - else - printf("\n"); - } - } -} - -static struct slclist * -getslc(char *name) -{ - return (struct slclist *) - genget(name, (char **) SlcList, sizeof(struct slclist)); -} - -static int -slccmd(int argc, char *argv[]) -{ - struct slclist *c; - - if (argc != 2) { - fprintf(stderr, - "Need an argument to 'slc' command. 'slc ?' for help.\n"); - return 0; - } - c = getslc(argv[1]); - if (c == 0) { - fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n", - argv[1]); - return 0; - } - if (Ambiguous((void *)c)) { - fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n", - argv[1]); - return 0; - } - (*c->handler)(c->arg); - slcstate(); - return 1; -} - -/* - * The ENVIRON command. - */ - -struct envlist { - const char *name; - const char *help; - void (*handler)(unsigned char *, unsigned char *); - int narg; -}; - -extern struct env_lst * - env_define(const unsigned char *, unsigned char *); -extern void - env_undefine(unsigned char *), - env_export(const unsigned char *), - env_unexport(const unsigned char *), - env_send(unsigned char *), -#if defined(OLD_ENVIRON) && defined(ENV_HACK) - env_varval(unsigned char *), -#endif - env_list(void); -static void - env_help(void); - -struct envlist EnvList[] = { - { "define", "Define an environment variable", - (void (*)(unsigned char *, unsigned char *))env_define, 2 }, - { "undefine", "Undefine an environment variable", - (void (*)(unsigned char *, unsigned char *))env_undefine, 1 }, - { "export", "Mark an environment variable for automatic export", - (void (*)(unsigned char *, unsigned char *))env_export, 1 }, - { "unexport", "Don't mark an environment variable for automatic export", - (void (*)(unsigned char *, unsigned char *))env_unexport, 1 }, - { "send", "Send an environment variable", (void (*)(unsigned char *, unsigned char *))env_send, 1 }, - { "list", "List the current environment variables", - (void (*)(unsigned char *, unsigned char *))env_list, 0 }, -#if defined(OLD_ENVIRON) && defined(ENV_HACK) - { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)", - (void (*)(unsigned char *, unsigned char *))env_varval, 1 }, -#endif - { "help", NULL, (void (*)(unsigned char *, unsigned char *))env_help, 0 }, - { "?", "Print help information", (void (*)(unsigned char *, unsigned char *))env_help, 0 }, - { NULL, NULL, NULL, 0 }, -}; - -static void -env_help(void) -{ - struct envlist *c; - - for (c = EnvList; c->name; c++) { - if (c->help) { - if (*c->help) - printf("%-15s %s\n", c->name, c->help); - else - printf("\n"); - } - } -} - -static struct envlist * -getenvcmd(char *name) -{ - return (struct envlist *) - genget(name, (char **) EnvList, sizeof(struct envlist)); -} - -static int -env_cmd(int argc, char *argv[]) -{ - struct envlist *c; - - if (argc < 2) { - fprintf(stderr, - "Need an argument to 'environ' command. 'environ ?' for help.\n"); - return 0; - } - c = getenvcmd(argv[1]); - if (c == 0) { - fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n", - argv[1]); - return 0; - } - if (Ambiguous((void *)c)) { - fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n", - argv[1]); - return 0; - } - if (c->narg + 2 != argc) { - fprintf(stderr, - "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n", - c->narg < argc + 2 ? "only " : "", - c->narg, c->narg == 1 ? "" : "s", c->name); - return 0; - } - (*c->handler)(argv[2], argv[3]); - return 1; -} - -struct env_lst { - struct env_lst *next; /* pointer to next structure */ - struct env_lst *prev; /* pointer to previous structure */ - unsigned char *var; /* pointer to variable name */ - unsigned char *value; /* pointer to variable value */ - int export; /* 1 -> export with default list of variables */ - int welldefined; /* A well defined variable */ -}; - -struct env_lst envlisthead; - -static struct env_lst * -env_find(const unsigned char *var) -{ - struct env_lst *ep; - - for (ep = envlisthead.next; ep; ep = ep->next) { - if (strcmp(ep->var, var) == 0) - return(ep); - } - return(NULL); -} - -void -env_init(void) -{ - extern char **environ; - char **epp, *cp; - struct env_lst *ep; - - for (epp = environ; *epp; epp++) { - if ((cp = strchr(*epp, '='))) { - *cp = '\0'; - ep = env_define((unsigned char *)*epp, - (unsigned char *)cp+1); - ep->export = 0; - *cp = '='; - } - } - /* - * Special case for DISPLAY variable. If it is ":0.0" or - * "unix:0.0", we have to get rid of "unix" and insert our - * hostname. - */ - if ((ep = env_find("DISPLAY")) - && ((*ep->value == ':') - || (strncmp((char *)ep->value, "unix:", 5) == 0))) { - char hbuf[256+1]; - char *cp2 = strchr((char *)ep->value, ':'); - - gethostname(hbuf, 256); - hbuf[256] = '\0'; - cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1); - sprintf((char *)cp, "%s%s", hbuf, cp2); - free(ep->value); - ep->value = (unsigned char *)cp; - } - /* - * If USER is not defined, but LOGNAME is, then add - * USER with the value from LOGNAME. By default, we - * don't export the USER variable. - */ - if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) { - env_define("USER", ep->value); - env_unexport("USER"); - } - env_export("DISPLAY"); - env_export("PRINTER"); -} - -struct env_lst * -env_define(const unsigned char *var, unsigned char *value) -{ - struct env_lst *ep; - - if ((ep = env_find(var))) { - if (ep->var) - free(ep->var); - if (ep->value) - free(ep->value); - } else { - ep = (struct env_lst *)malloc(sizeof(struct env_lst)); - ep->next = envlisthead.next; - envlisthead.next = ep; - ep->prev = &envlisthead; - if (ep->next) - ep->next->prev = ep; - } - ep->welldefined = opt_welldefined(var); - ep->export = 1; - ep->var = strdup(var); - ep->value = strdup(value); - return(ep); -} - -void -env_undefine(unsigned char *var) -{ - struct env_lst *ep; - - if ((ep = env_find(var))) { - ep->prev->next = ep->next; - if (ep->next) - ep->next->prev = ep->prev; - if (ep->var) - free(ep->var); - if (ep->value) - free(ep->value); - free(ep); - } -} - -void -env_export(const unsigned char *var) -{ - struct env_lst *ep; - - if ((ep = env_find(var))) - ep->export = 1; -} - -void -env_unexport(const unsigned char *var) -{ - struct env_lst *ep; - - if ((ep = env_find(var))) - ep->export = 0; -} - -void -env_send(unsigned char *var) -{ - struct env_lst *ep; - - if (my_state_is_wont(TELOPT_NEW_ENVIRON) -#ifdef OLD_ENVIRON - && my_state_is_wont(TELOPT_OLD_ENVIRON) -#endif - ) { - fprintf(stderr, - "Cannot send '%s': Telnet ENVIRON option not enabled\n", - var); - return; - } - ep = env_find(var); - if (ep == 0) { - fprintf(stderr, "Cannot send '%s': variable not defined\n", - var); - return; - } - env_opt_start_info(); - env_opt_add(ep->var); - env_opt_end(0); -} - -void -env_list(void) -{ - struct env_lst *ep; - - for (ep = envlisthead.next; ep; ep = ep->next) { - printf("%c %-20s %s\n", ep->export ? '*' : ' ', - ep->var, ep->value); - } -} - -unsigned char * -env_default(int init, int welldefined) -{ - static struct env_lst *nep = NULL; - - if (init) { - nep = &envlisthead; - return(NULL); - } - if (nep) { - while ((nep = nep->next)) { - if (nep->export && (nep->welldefined == welldefined)) - return(nep->var); - } - } - return(NULL); -} - -unsigned char * -env_getvalue(const unsigned char *var) -{ - struct env_lst *ep; - - if ((ep = env_find(var))) - return(ep->value); - return(NULL); -} - -#if defined(OLD_ENVIRON) && defined(ENV_HACK) -void -env_varval(unsigned char *what) -{ - extern int old_env_var, old_env_value, env_auto; - int len = strlen((char *)what); - - if (len == 0) - goto unknown; - - if (strncasecmp((char *)what, "status", len) == 0) { - if (env_auto) - printf("%s%s", "VAR and VALUE are/will be ", - "determined automatically\n"); - if (old_env_var == OLD_ENV_VAR) - printf("VAR and VALUE set to correct definitions\n"); - else - printf("VAR and VALUE definitions are reversed\n"); - } else if (strncasecmp((char *)what, "auto", len) == 0) { - env_auto = 1; - old_env_var = OLD_ENV_VALUE; - old_env_value = OLD_ENV_VAR; - } else if (strncasecmp((char *)what, "right", len) == 0) { - env_auto = 0; - old_env_var = OLD_ENV_VAR; - old_env_value = OLD_ENV_VALUE; - } else if (strncasecmp((char *)what, "wrong", len) == 0) { - env_auto = 0; - old_env_var = OLD_ENV_VALUE; - old_env_value = OLD_ENV_VAR; - } else { -unknown: - printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\n"); - } -} -#endif - - - -/* - * Print status about the connection. - */ -/*ARGSUSED*/ -static int -status(int argc, char *argv[]) -{ - if (connected) { - printf("Connected to %s.\n", hostname); - if ((argc < 2) || strcmp(argv[1], "notmuch")) { - int mode = getconnmode(); - - if (my_want_state_is_will(TELOPT_LINEMODE)) { - printf("Operating with LINEMODE option\n"); - printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No"); - printf("%s catching of signals\n", - (mode&MODE_TRAPSIG) ? "Local" : "No"); - slcstate(); -#ifdef KLUDGELINEMODE - } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { - printf("Operating in obsolete linemode\n"); -#endif - } else { - printf("Operating in single character mode\n"); - if (localchars) - printf("Catching signals locally\n"); - } - printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote"); - if (my_want_state_is_will(TELOPT_LFLOW)) - printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No"); - } - } else { - printf("No connection.\n"); - } - printf("Escape character is '%s'.\n", control(escape)); - (void) fflush(stdout); - return 1; -} - -#ifdef SIGINFO -/* - * Function that gets called when SIGINFO is received. - */ -void -ayt_status(void) -{ - (void) call(status, "status", "notmuch", 0); -} -#endif - -static const char * -sockaddr_ntop(struct sockaddr *sa) -{ - void *addr; - static char addrbuf[INET6_ADDRSTRLEN]; - - switch (sa->sa_family) { - case AF_INET: - addr = &((struct sockaddr_in *)sa)->sin_addr; - break; - case AF_UNIX: - addr = &((struct sockaddr_un *)sa)->sun_path; - break; -#ifdef INET6 - case AF_INET6: - addr = &((struct sockaddr_in6 *)sa)->sin6_addr; - break; -#endif - default: - return NULL; - } - inet_ntop(sa->sa_family, addr, addrbuf, sizeof(addrbuf)); - return addrbuf; -} - -#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) -static int -setpolicy(int lnet, struct addrinfo *res, char *policy) -{ - char *buf; - int level; - int optname; - - if (policy == NULL) - return 0; - - buf = ipsec_set_policy(policy, strlen(policy)); - if (buf == NULL) { - printf("%s\n", ipsec_strerror()); - return -1; - } - level = res->ai_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6; - optname = res->ai_family == AF_INET ? IP_IPSEC_POLICY : IPV6_IPSEC_POLICY; - if (setsockopt(lnet, level, optname, buf, ipsec_get_policylen(buf)) < 0){ - perror("setsockopt"); - return -1; - } - - free(buf); - return 0; -} -#endif - -#ifdef INET6 -/* - * When an Address Family related error happend, check if retry with - * another AF is possible or not. - * Return 1, if retry with another af is OK. Else, return 0. - */ -static int -switch_af(struct addrinfo **aip) -{ - int nextaf; - struct addrinfo *ai; - - ai = *aip; - nextaf = (ai->ai_family == AF_INET) ? AF_INET6 : AF_INET; - do - ai=ai->ai_next; - while (ai != NULL && ai->ai_family != nextaf); - *aip = ai; - if (*aip != NULL) { - return 1; - } - return 0; -} -#endif - -int -tn(int argc, char *argv[]) -{ - char *srp = 0; - int proto, opt; - int srlen; - int srcroute = 0, result; - char *cmd, *hostp = 0, *portp = 0, *user = 0; - char *src_addr = NULL; - struct addrinfo hints, *res, *res0 = NULL, *src_res, *src_res0 = NULL; - int error = 0, af_error = 0; - - if (connected) { - printf("?Already connected to %s\n", hostname); - setuid(getuid()); - return 0; - } - if (argc < 2) { - (void) strcpy(line, "open "); - printf("(to) "); - (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); - makeargv(); - argc = margc; - argv = margv; - } - cmd = *argv; - --argc; ++argv; - while (argc) { - if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?")) - goto usage; - if (strcmp(*argv, "-l") == 0) { - --argc; ++argv; - if (argc == 0) - goto usage; - user = *argv++; - --argc; - continue; - } - if (strcmp(*argv, "-a") == 0) { - --argc; ++argv; - autologin = 1; - continue; - } - if (strcmp(*argv, "-s") == 0) { - --argc; ++argv; - if (argc == 0) - goto usage; - src_addr = *argv++; - --argc; - continue; - } - if (hostp == 0) { - hostp = *argv++; - --argc; - continue; - } - if (portp == 0) { - portp = *argv++; - --argc; - continue; - } - usage: - printf("usage: %s [-l user] [-a] [-s src_addr] host-name [port]\n", cmd); - setuid(getuid()); - return 0; - } - if (hostp == 0) - goto usage; - - if (src_addr != NULL) { - memset(&hints, 0, sizeof(hints)); - hints.ai_family = family; - hints.ai_socktype = SOCK_STREAM; - error = getaddrinfo(src_addr, 0, &hints, &src_res); - if (error == EAI_NODATA) { - hints.ai_flags = 0; - error = getaddrinfo(src_addr, 0, &hints, &src_res); - } - if (error != 0) { - fprintf(stderr, "%s: %s\n", src_addr, gai_strerror(error)); - if (error == EAI_SYSTEM) - fprintf(stderr, "%s: %s\n", src_addr, strerror(errno)); - setuid(getuid()); - return 0; - } - src_res0 = src_res; - } - if (hostp[0] == '/') { - struct sockaddr_un su; - - if (strlen(hostp) >= sizeof(su.sun_path)) { - fprintf(stderr, "hostname too long for unix domain socket: %s", - hostp); - goto fail; - } - memset(&su, 0, sizeof su); - su.sun_family = AF_UNIX; - strncpy(su.sun_path, hostp, sizeof su.sun_path); - printf("Trying %s...\n", hostp); - net = socket(PF_UNIX, SOCK_STREAM, 0); - if ( net < 0) { - perror("socket"); - goto fail; - } - if (connect(net, (struct sockaddr *)&su, sizeof su) == -1) { - perror(su.sun_path); - (void) NetClose(net); - goto fail; - } - goto af_unix; - } else if (hostp[0] == '@' || hostp[0] == '!') { - if ( -#ifdef INET6 - family == AF_INET6 || -#endif - (hostname = strrchr(hostp, ':')) == NULL) - hostname = strrchr(hostp, '@'); - if (hostname == NULL) { - hostname = hostp; - } else { - hostname++; - srcroute = 1; - } - } else - hostname = hostp; - if (!portp) { - telnetport = 1; - portp = strdup("telnet"); - } else if (*portp == '-') { - portp++; - telnetport = 1; - } else - telnetport = 0; - - memset(&hints, 0, sizeof(hints)); - hints.ai_flags = AI_NUMERICHOST; - hints.ai_family = family; - hints.ai_socktype = SOCK_STREAM; - error = getaddrinfo(hostname, portp, &hints, &res); - if (error) { - hints.ai_flags = AI_CANONNAME; - error = getaddrinfo(hostname, portp, &hints, &res); - } - if (error != 0) { - fprintf(stderr, "%s: %s\n", hostname, gai_strerror(error)); - if (error == EAI_SYSTEM) - fprintf(stderr, "%s: %s\n", hostname, strerror(errno)); - setuid(getuid()); - goto fail; - } - if (hints.ai_flags == AI_NUMERICHOST) { - /* hostname has numeric */ - int gni_err = 1; - - if (doaddrlookup) - gni_err = getnameinfo(res->ai_addr, res->ai_addr->sa_len, - _hostname, sizeof(_hostname) - 1, NULL, 0, - NI_NAMEREQD); - if (gni_err != 0) - (void) strncpy(_hostname, hostp, sizeof(_hostname) - 1); - _hostname[sizeof(_hostname)-1] = '\0'; - hostname = _hostname; - } else { - /* hostname has FQDN */ - if (srcroute != 0) - (void) strncpy(_hostname, hostname, sizeof(_hostname) - 1); - else if (res->ai_canonname != NULL) - strcpy(_hostname, res->ai_canonname); - else - (void) strncpy(_hostname, hostp, sizeof(_hostname) - 1); - _hostname[sizeof(_hostname)-1] = '\0'; - hostname = _hostname; - } - res0 = res; - #ifdef INET6 - af_again: - #endif - if (srcroute != 0) { - static char hostbuf[BUFSIZ]; - - if (af_error == 0) { /* save intermediate hostnames for retry */ - strncpy(hostbuf, hostp, BUFSIZ - 1); - hostbuf[BUFSIZ - 1] = '\0'; - } else - hostp = hostbuf; - srp = 0; - result = sourceroute(res, hostp, &srp, &srlen, &proto, &opt); - if (result == 0) { -#ifdef INET6 - if (family == AF_UNSPEC && af_error == 0 && - switch_af(&res) == 1) { - af_error = 1; - goto af_again; - } -#endif - setuid(getuid()); - goto fail; - } else if (result == -1) { - printf("Bad source route option: %s\n", hostp); - setuid(getuid()); - goto fail; - } - } - do { - printf("Trying %s...\n", sockaddr_ntop(res->ai_addr)); - net = socket(res->ai_family, res->ai_socktype, res->ai_protocol); - setuid(getuid()); - if (net < 0) { -#ifdef INET6 - if (family == AF_UNSPEC && af_error == 0 && - switch_af(&res) == 1) { - af_error = 1; - goto af_again; - } -#endif - perror("telnet: socket"); - goto fail; - } - if (srp && setsockopt(net, proto, opt, (char *)srp, srlen) < 0) - perror("setsockopt (source route)"); -#if defined(IPPROTO_IP) && defined(IP_TOS) - if (res->ai_family == PF_INET) { -# if defined(HAS_GETTOS) - struct tosent *tp; - if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) - tos = tp->t_tos; -# endif - if (tos < 0) - tos = IPTOS_LOWDELAY; - if (tos - && (setsockopt(net, IPPROTO_IP, IP_TOS, - (char *)&tos, sizeof(int)) < 0) - && (errno != ENOPROTOOPT)) - perror("telnet: setsockopt (IP_TOS) (ignored)"); - } -#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ - - if (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++; - } while (connected == 0); - freeaddrinfo(res0); - if (src_res0 != NULL) - freeaddrinfo(src_res0); - cmdrc(hostp, hostname); - af_unix: - if (autologin && user == NULL) { - struct passwd *pw; - - user = getenv("USER"); - if (user == NULL || - ((pw = getpwnam(user)) && pw->pw_uid != getuid())) { - if ((pw = getpwuid(getuid()))) - user = pw->pw_name; - else - user = NULL; - } - } - if (user) { - env_define("USER", user); - env_export("USER"); - } - (void) call(status, "status", "notmuch", 0); - if (setjmp(peerdied) == 0) - telnet(user); - (void) NetClose(net); - ExitString("Connection closed by foreign host.\n",1); - /*NOTREACHED*/ - fail: - if (res0 != NULL) - freeaddrinfo(res0); - if (src_res0 != NULL) - freeaddrinfo(src_res0); - return 0; -} - -#define HELPINDENT (sizeof ("connect")) - -static char - openhelp[] = "connect to a site", - closehelp[] = "close current connection", - logouthelp[] = "forcibly logout remote user and close the connection", - quithelp[] = "exit telnet", - statushelp[] = "print status information", - helphelp[] = "print help information", - sendhelp[] = "transmit special characters ('send ?' for more)", - sethelp[] = "set operating parameters ('set ?' for more)", - unsethelp[] = "unset operating parameters ('unset ?' for more)", - togglestring[] ="toggle operating parameters ('toggle ?' for more)", - slchelp[] = "change state of special charaters ('slc ?' for more)", - displayhelp[] = "display operating parameters", - zhelp[] = "suspend telnet", -#ifdef OPIE - opiehelp[] = "compute response to OPIE challenge", -#endif - shellhelp[] = "invoke a subshell", - envhelp[] = "change environment variables ('environ ?' for more)", - modestring[] = "try to enter line or character mode ('mode ?' for more)"; - -static Command cmdtab[] = { - { "close", closehelp, bye, 1 }, - { "logout", logouthelp, (int (*)(int, char **))logout, 1 }, - { "display", displayhelp, display, 0 }, - { "mode", modestring, modecmd, 0 }, - { "telnet", openhelp, tn, 0 }, - { "open", openhelp, tn, 0 }, - { "quit", quithelp, (int (*)(int, char **))quit, 0 }, - { "send", sendhelp, sendcmd, 0 }, - { "set", sethelp, setcmd, 0 }, - { "unset", unsethelp, unsetcmd, 0 }, - { "status", statushelp, status, 0 }, - { "toggle", togglestring, toggle, 0 }, - { "slc", slchelp, slccmd, 0 }, - { "z", zhelp, (int (*)(int, char **))suspend, 0 }, - { "!", shellhelp, shell, 1 }, - { "environ", envhelp, env_cmd, 0 }, - { "?", helphelp, help, 0 }, -#ifdef OPIE - { "opie", opiehelp, opie_calc, 0 }, -#endif - { NULL, NULL, NULL, 0 } -}; - -static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; -static char escapehelp[] = "deprecated command -- use 'set escape' instead"; - -static Command cmdtab2[] = { - { "help", 0, help, 0 }, - { "escape", escapehelp, setescape, 0 }, - { "crmod", crmodhelp, (int (*)(int, char **))togcrmod, 0 }, - { NULL, NULL, NULL, 0 } -}; - - -/* - * Call routine with argc, argv set from args (terminated by 0). - */ - -static int -call(intrtn_t routine, ...) -{ - va_list ap; - char *args[100]; - int argno = 0; - - va_start(ap, routine); - while ((args[argno++] = va_arg(ap, char *)) != 0); - va_end(ap); - return (*routine)(argno-1, args); -} - - -static Command * -getcmd(char *name) -{ - Command *cm; - - if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command)))) - return cm; - return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); -} - -void -command(int top, const char *tbuf, int cnt) -{ - Command *c; - - setcommandmode(); - if (!top) { - putchar('\n'); - } else { - (void) signal(SIGINT, SIG_DFL); - (void) signal(SIGQUIT, SIG_DFL); - } - for (;;) { - if (rlogin == _POSIX_VDISABLE) - printf("%s> ", prompt); - if (tbuf) { - char *cp; - cp = line; - while (cnt > 0 && (*cp++ = *tbuf++) != '\n') - cnt--; - tbuf = 0; - if (cp == line || *--cp != '\n' || cp == line) - goto getline; - *cp = '\0'; - if (rlogin == _POSIX_VDISABLE) - printf("%s\n", line); - } else { - getline: - if (rlogin != _POSIX_VDISABLE) - printf("%s> ", prompt); - if (fgets(line, sizeof(line), stdin) == NULL) { - if (feof(stdin) || ferror(stdin)) { - (void) quit(); - /*NOTREACHED*/ - } - break; - } - } - if (line[0] == 0) - break; - makeargv(); - if (margv[0] == 0) { - break; - } - c = getcmd(margv[0]); - if (Ambiguous((void *)c)) { - printf("?Ambiguous command\n"); - continue; - } - if (c == 0) { - printf("?Invalid command\n"); - continue; - } - if (c->needconnect && !connected) { - printf("?Need to be connected first.\n"); - continue; - } - if ((*c->handler)(margc, margv)) { - break; - } - } - if (!top) { - if (!connected) { - longjmp(toplevel, 1); - /*NOTREACHED*/ - } - setconnmode(0); - } -} - -/* - * Help command. - */ -static int -help(int argc, char *argv[]) -{ - Command *c; - - if (argc == 1) { - printf("Commands may be abbreviated. Commands are:\n\n"); - for (c = cmdtab; c->name; c++) - if (c->help) { - printf("%-*s\t%s\n", (int)HELPINDENT, c->name, - c->help); - } - return 0; - } - else while (--argc > 0) { - char *arg; - arg = *++argv; - c = getcmd(arg); - if (Ambiguous((void *)c)) - printf("?Ambiguous help command %s\n", arg); - else if (c == (Command *)0) - printf("?Invalid help command %s\n", arg); - else - printf("%s\n", c->help); - } - return 0; -} - -static char *rcname = 0; -static char rcbuf[128]; - -void -cmdrc(char *m1, char *m2) -{ - Command *c; - FILE *rcfile; - int gotmachine = 0; - int l1 = strlen(m1); - int l2 = strlen(m2); - char m1save[MAXHOSTNAMELEN]; - - if (skiprc) - return; - - strlcpy(m1save, m1, sizeof(m1save)); - m1 = m1save; - - if (rcname == 0) { - rcname = getenv("HOME"); - if (rcname && (strlen(rcname) + 10) < sizeof(rcbuf)) - strcpy(rcbuf, rcname); - else - rcbuf[0] = '\0'; - strcat(rcbuf, "/.telnetrc"); - rcname = rcbuf; - } - - if ((rcfile = fopen(rcname, "r")) == 0) { - return; - } - - for (;;) { - if (fgets(line, sizeof(line), rcfile) == NULL) - break; - if (line[0] == 0) - break; - if (line[0] == '#') - continue; - if (gotmachine) { - if (!isspace(line[0])) - gotmachine = 0; - } - if (gotmachine == 0) { - if (isspace(line[0])) - continue; - if (strncasecmp(line, m1, l1) == 0) - strncpy(line, &line[l1], sizeof(line) - l1); - else if (strncasecmp(line, m2, l2) == 0) - strncpy(line, &line[l2], sizeof(line) - l2); - else if (strncasecmp(line, "DEFAULT", 7) == 0) - strncpy(line, &line[7], sizeof(line) - 7); - else - continue; - if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') - continue; - gotmachine = 1; - } - makeargv(); - if (margv[0] == 0) - continue; - c = getcmd(margv[0]); - if (Ambiguous((void *)c)) { - printf("?Ambiguous command: %s\n", margv[0]); - continue; - } - if (c == 0) { - printf("?Invalid command: %s\n", margv[0]); - continue; - } - /* - * This should never happen... - */ - if (c->needconnect && !connected) { - printf("?Need to be connected first for %s.\n", margv[0]); - continue; - } - (*c->handler)(margc, margv); - } - fclose(rcfile); -} - -/* - * Source route is handed in as - * [!]@hop1@hop2...[@|:]dst - * If the leading ! is present, it is a - * strict source route, otherwise it is - * assmed to be a loose source route. - * - * We fill in the source route option as - * hop1,hop2,hop3...dest - * and return a pointer to hop1, which will - * be the address to connect() to. - * - * Arguments: - * - * res: ponter to addrinfo structure which contains sockaddr to - * the host to connect to. - * - * arg: pointer to route list to decipher - * - * cpp: If *cpp is not equal to NULL, this is a - * pointer to a pointer to a character array - * that should be filled in with the option. - * - * lenp: pointer to an integer that contains the - * length of *cpp if *cpp != NULL. - * - * protop: pointer to an integer that should be filled in with - * appropriate protocol for setsockopt, as socket - * protocol family. - * - * optp: pointer to an integer that should be filled in with - * appropriate option for setsockopt, as socket protocol - * family. - * - * Return values: - * - * If the return value is 1, then all operations are - * successful. If the - * return value is -1, there was a syntax error in the - * option, either unknown characters, or too many hosts. - * If the return value is 0, one of the hostnames in the - * path is unknown, and *cpp is set to point to the bad - * hostname. - * - * *cpp: If *cpp was equal to NULL, it will be filled - * in with a pointer to our static area that has - * the option filled in. This will be 32bit aligned. - * - * *lenp: This will be filled in with how long the option - * pointed to by *cpp is. - * - * *protop: This will be filled in with appropriate protocol for - * setsockopt, as socket protocol family. - * - * *optp: This will be filled in with appropriate option for - * setsockopt, as socket protocol family. - */ -static int -sourceroute(struct addrinfo *ai, char *arg, char **cpp, int *lenp, int *protop, int *optp) -{ - static char buf[1024 + ALIGNBYTES]; /*XXX*/ - char *cp, *cp2, *lsrp, *ep; - struct sockaddr_in *_sin; -#ifdef INET6 - struct sockaddr_in6 *sin6; - struct cmsghdr *cmsg; -#endif - struct addrinfo hints, *res; - int error; - char c; - - /* - * Verify the arguments, and make sure we have - * at least 7 bytes for the option. - */ - if (cpp == NULL || lenp == NULL) - return -1; - if (*cpp != NULL) { - switch (res->ai_family) { - case AF_INET: - if (*lenp < 7) - return -1; - break; -#ifdef INET6 - case AF_INET6: - if (*lenp < (int)CMSG_SPACE(sizeof(struct ip6_rthdr) + - sizeof(struct in6_addr))) - return -1; - break; -#endif - } - } - /* - * Decide whether we have a buffer passed to us, - * or if we need to use our own static buffer. - */ - if (*cpp) { - lsrp = *cpp; - ep = lsrp + *lenp; - } else { - *cpp = lsrp = (char *)ALIGN(buf); - ep = lsrp + 1024; - } - - cp = arg; - -#ifdef INET6 - if (ai->ai_family == AF_INET6) { - cmsg = inet6_rthdr_init(*cpp, IPV6_RTHDR_TYPE_0); - if (*cp != '@') - return -1; - *protop = IPPROTO_IPV6; - *optp = IPV6_PKTOPTIONS; - } else -#endif - { - /* - * Next, decide whether we have a loose source - * route or a strict source route, and fill in - * the begining of the option. - */ - if (*cp == '!') { - cp++; - *lsrp++ = IPOPT_SSRR; - } else - *lsrp++ = IPOPT_LSRR; - - if (*cp != '@') - return -1; - - lsrp++; /* skip over length, we'll fill it in later */ - *lsrp++ = 4; - *protop = IPPROTO_IP; - *optp = IP_OPTIONS; - } - - cp++; - memset(&hints, 0, sizeof(hints)); - hints.ai_family = ai->ai_family; - hints.ai_socktype = SOCK_STREAM; - for (c = 0;;) { - if ( -#ifdef INET6 - ai->ai_family != AF_INET6 && -#endif - c == ':') - cp2 = 0; - else for (cp2 = cp; (c = *cp2); cp2++) { - if (c == ',') { - *cp2++ = '\0'; - if (*cp2 == '@') - cp2++; - } else if (c == '@') { - *cp2++ = '\0'; - } else if ( -#ifdef INET6 - ai->ai_family != AF_INET6 && -#endif - c == ':') { - *cp2++ = '\0'; - } else - continue; - break; - } - if (!c) - cp2 = 0; - - hints.ai_flags = AI_NUMERICHOST; - error = getaddrinfo(cp, NULL, &hints, &res); - if (error == EAI_NODATA) { - hints.ai_flags = 0; - error = getaddrinfo(cp, NULL, &hints, &res); - } - if (error != 0) { - fprintf(stderr, "%s: %s\n", cp, gai_strerror(error)); - if (error == EAI_SYSTEM) - fprintf(stderr, "%s: %s\n", cp, - strerror(errno)); - *cpp = cp; - return(0); - } -#ifdef INET6 - if (res->ai_family == AF_INET6) { - sin6 = (struct sockaddr_in6 *)res->ai_addr; - inet6_rthdr_add(cmsg, &sin6->sin6_addr, - IPV6_RTHDR_LOOSE); - } else -#endif - { - _sin = (struct sockaddr_in *)res->ai_addr; - memcpy(lsrp, (char *)&_sin->sin_addr, 4); - lsrp += 4; - } - if (cp2) - cp = cp2; - else - break; - /* - * Check to make sure there is space for next address - */ -#ifdef INET6 - if (res->ai_family == AF_INET6) { - if (((char *)CMSG_DATA(cmsg) + - sizeof(struct ip6_rthdr) + - ((inet6_rthdr_segments(cmsg) + 1) * - sizeof(struct in6_addr))) > ep) - return -1; - } else -#endif - if (lsrp + 4 > ep) - return -1; - freeaddrinfo(res); - } -#ifdef INET6 - if (res->ai_family == AF_INET6) { - inet6_rthdr_lasthop(cmsg, IPV6_RTHDR_LOOSE); - *lenp = cmsg->cmsg_len; - } else -#endif - { - if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) { - *cpp = 0; - *lenp = 0; - return -1; - } - *lsrp++ = IPOPT_NOP; /* 32 bit word align it */ - *lenp = lsrp - *cpp; - } - freeaddrinfo(res); - return 1; -} |