Index: stable/11/contrib/telnet/telnet/commands.c =================================================================== --- stable/11/contrib/telnet/telnet/commands.c (revision 350139) +++ stable/11/contrib/telnet/telnet/commands.c (revision 350140) @@ -1,3012 +1,3016 @@ /* * 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include +#include #include #include #include #include #include #include #include #include #include #include #include #include #include "general.h" #include "ring.h" #include "externs.h" #include "defines.h" #include "types.h" #include "misc.h" #ifdef AUTHENTICATION #include #endif #ifdef ENCRYPTION #include #endif #include #include #include #ifndef MAXHOSTNAMELEN #define MAXHOSTNAMELEN 256 #endif typedef int (*intrtn_t)(int, char **); #ifdef AUTHENTICATION extern int auth_togdebug(int); #endif #ifdef ENCRYPTION extern int EncryptAutoEnc(int); extern int EncryptAutoDec(int); extern int EncryptDebug(int); extern int EncryptVerbose(int); #endif /* ENCRYPTION */ #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 *, unsigned 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 #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 \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 .\n"); } else { printf("Will send carriage returns as telnet .\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 ", (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 }, { "baudrate", "set remote baud rate", DoBaudRate, ComPortBaudRate }, { 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, ':'); + size_t buflen; - gethostname(hbuf, 256); - hbuf[256] = '\0'; - cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1); - sprintf((char *)cp, "%s%s", hbuf, cp2); + gethostname(hbuf, sizeof(hbuf)); + hbuf[sizeof(hbuf)-1] = '\0'; + buflen = strlen(hbuf) + strlen(cp2) + 1; + cp = (char *)malloc(sizeof(char)*buflen); + assert(cp != NULL); + snprintf((char *)cp, buflen, "%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[]) { unsigned 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, unsigned char **cpp, int *lenp, int *protop, int *optp) { static char buf[1024 + ALIGNBYTES]; /*XXX*/ unsigned 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; } Index: stable/11/contrib/telnet/telnet/telnet.c =================================================================== --- stable/11/contrib/telnet/telnet/telnet.c (revision 350139) +++ stable/11/contrib/telnet/telnet/telnet.c (revision 350140) @@ -1,2440 +1,2440 @@ /* * 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[] = "@(#)telnet.c 8.4 (Berkeley) 5/30/95"; #endif #endif #include __FBSDID("$FreeBSD$"); #include /* By the way, we need to include curses.h before telnet.h since, * among other things, telnet.h #defines 'DO', which is a variable * declared in curses.h. */ #include #include #include #include #include #include #include #include #include "ring.h" #include "defines.h" #include "externs.h" #include "types.h" #include "general.h" #ifdef AUTHENTICATION #include #endif #ifdef ENCRYPTION #include #endif #include #define strip(x) ((my_want_state_is_wont(TELOPT_BINARY)) ? ((x)&0x7f) : (x)) static unsigned char subbuffer[SUBBUFSIZE], *subpointer, *subend; /* buffer for sub-options */ #define SB_CLEAR() subpointer = subbuffer; #define SB_TERM() { subend = subpointer; SB_CLEAR(); } #define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \ *subpointer++ = (c); \ } #define SB_GET() ((*subpointer++)&0xff) #define SB_PEEK() ((*subpointer)&0xff) #define SB_EOF() (subpointer >= subend) #define SB_LEN() (subend - subpointer) char options[256]; /* The combined options */ char do_dont_resp[256]; char will_wont_resp[256]; int eight = 0, autologin = 0, /* Autologin anyone? */ skiprc = 0, connected, showoptions, ISend, /* trying to send network data in */ telnet_debug = 0, crmod, netdata, /* Print out network data flow */ crlf, /* Should '\r' be mapped to (or )? */ telnetport, SYNCHing, /* we are in TELNET SYNCH mode */ flushout, /* flush output */ autoflush = 0, /* flush output when interrupting? */ autosynch, /* send interrupt characters with SYNCH? */ localflow, /* we handle flow control locally */ restartany, /* if flow control enabled, restart on any character */ localchars, /* we recognize interrupt/quit */ donelclchars, /* the user has set "localchars" */ donebinarytoggle, /* the user has put us in binary */ dontlecho, /* do we suppress local echoing right now? */ globalmode, doaddrlookup = 1, /* do a reverse address lookup? */ clienteof = 0; char *prompt = 0; #ifdef ENCRYPTION char *line; /* hack around breakage in sra.c :-( !! */ #endif cc_t escape; cc_t rlogin; #ifdef KLUDGELINEMODE cc_t echoc; #endif /* * Telnet receiver states for fsm */ #define TS_DATA 0 #define TS_IAC 1 #define TS_WILL 2 #define TS_WONT 3 #define TS_DO 4 #define TS_DONT 5 #define TS_CR 6 #define TS_SB 7 /* sub-option collection */ #define TS_SE 8 /* looking for sub-option end */ static int telrcv_state; #ifdef OLD_ENVIRON unsigned char telopt_environ = TELOPT_NEW_ENVIRON; #else # define telopt_environ TELOPT_NEW_ENVIRON #endif jmp_buf toplevel; int flushline; int linemode; #ifdef KLUDGELINEMODE int kludgelinemode = 1; #endif static int is_unique(char *, char **, char **); /* * The following are some clocks used to decide how to interpret * the relationship between various variables. */ Clocks clocks; /* * Initialize telnet environment. */ void init_telnet(void) { env_init(); SB_CLEAR(); ClearArray(options); connected = ISend = localflow = donebinarytoggle = 0; #ifdef AUTHENTICATION #ifdef ENCRYPTION auth_encrypt_connect(connected); #endif #endif restartany = -1; SYNCHing = 0; /* Don't change NetTrace */ escape = CONTROL(']'); rlogin = _POSIX_VDISABLE; #ifdef KLUDGELINEMODE echoc = CONTROL('E'); #endif flushline = 1; telrcv_state = TS_DATA; } /* * These routines are in charge of sending option negotiations * to the other side. * * The basic idea is that we send the negotiation if either side * is in disagreement as to what the current state should be. */ unsigned char ComPortBaudRate[256]; void DoBaudRate(char *arg) { char *temp, temp2[10]; int i; uint32_t baudrate; errno = 0; baudrate = (uint32_t)strtol(arg, &temp, 10); if (temp[0] != '\0' || (baudrate == 0 && errno != 0)) ExitString("Invalid baud rate provided.\n", 1); for (i = 1; termspeeds[i].speed != -1; i++) if (baudrate == termspeeds[i].speed) break; if (termspeeds[i].speed == -1) ExitString("Invalid baud rate provided.\n", 1); strlcpy(ComPortBaudRate, arg, sizeof(ComPortBaudRate)); if (NETROOM() < sizeof(temp2)) { ExitString("No room in buffer for baud rate.\n", 1); /* NOTREACHED */ } snprintf(temp2, sizeof(temp2), "%c%c%c%c....%c%c", IAC, SB, TELOPT_COMPORT, COMPORT_SET_BAUDRATE, IAC, SE); baudrate = htonl(baudrate); memcpy(&temp2[4], &baudrate, sizeof(baudrate)); ring_supply_data(&netoring, temp2, sizeof(temp2)); printsub('>', &temp[2], sizeof(temp2) - 2); } void send_do(int c, int init) { if (init) { if (((do_dont_resp[c] == 0) && my_state_is_do(c)) || my_want_state_is_do(c)) return; set_my_want_state_do(c); do_dont_resp[c]++; } if (telnetport < 0) return; NET2ADD(IAC, DO); NETADD(c); printoption("SENT", DO, c); } void send_dont(int c, int init) { if (init) { if (((do_dont_resp[c] == 0) && my_state_is_dont(c)) || my_want_state_is_dont(c)) return; set_my_want_state_dont(c); do_dont_resp[c]++; } if (telnetport < 0) return; NET2ADD(IAC, DONT); NETADD(c); printoption("SENT", DONT, c); } void send_will(int c, int init) { if (init) { if (((will_wont_resp[c] == 0) && my_state_is_will(c)) || my_want_state_is_will(c)) return; set_my_want_state_will(c); will_wont_resp[c]++; } if (telnetport < 0) return; NET2ADD(IAC, WILL); NETADD(c); printoption("SENT", WILL, c); } void send_wont(int c, int init) { if (init) { if (((will_wont_resp[c] == 0) && my_state_is_wont(c)) || my_want_state_is_wont(c)) return; set_my_want_state_wont(c); will_wont_resp[c]++; } if (telnetport < 0) return; NET2ADD(IAC, WONT); NETADD(c); printoption("SENT", WONT, c); } void willoption(int option) { int new_state_ok = 0; if (do_dont_resp[option]) { --do_dont_resp[option]; if (do_dont_resp[option] && my_state_is_do(option)) --do_dont_resp[option]; } if ((do_dont_resp[option] == 0) && my_want_state_is_dont(option)) { switch (option) { case TELOPT_ECHO: case TELOPT_BINARY: case TELOPT_SGA: settimer(modenegotiated); /* FALLTHROUGH */ case TELOPT_STATUS: #ifdef AUTHENTICATION case TELOPT_AUTHENTICATION: #endif #ifdef ENCRYPTION case TELOPT_ENCRYPT: #endif /* ENCRYPTION */ new_state_ok = 1; break; case TELOPT_TM: if (flushout) flushout = 0; /* * Special case for TM. If we get back a WILL, * pretend we got back a WONT. */ set_my_want_state_dont(option); set_my_state_dont(option); return; /* Never reply to TM will's/wont's */ case TELOPT_LINEMODE: default: break; } if (new_state_ok) { set_my_want_state_do(option); send_do(option, 0); setconnmode(0); /* possibly set new tty mode */ } else { do_dont_resp[option]++; send_dont(option, 0); } } set_my_state_do(option); #ifdef ENCRYPTION if (option == TELOPT_ENCRYPT) encrypt_send_support(); #endif /* ENCRYPTION */ } void wontoption(int option) { if (do_dont_resp[option]) { --do_dont_resp[option]; if (do_dont_resp[option] && my_state_is_dont(option)) --do_dont_resp[option]; } if ((do_dont_resp[option] == 0) && my_want_state_is_do(option)) { switch (option) { #ifdef KLUDGELINEMODE case TELOPT_SGA: if (!kludgelinemode) break; /* FALLTHROUGH */ #endif case TELOPT_ECHO: settimer(modenegotiated); break; case TELOPT_TM: if (flushout) flushout = 0; set_my_want_state_dont(option); set_my_state_dont(option); return; /* Never reply to TM will's/wont's */ default: break; } set_my_want_state_dont(option); if (my_state_is_do(option)) send_dont(option, 0); setconnmode(0); /* Set new tty mode */ } else if (option == TELOPT_TM) { /* * Special case for TM. */ if (flushout) flushout = 0; set_my_want_state_dont(option); } set_my_state_dont(option); } static void dooption(int option) { int new_state_ok = 0; if (will_wont_resp[option]) { --will_wont_resp[option]; if (will_wont_resp[option] && my_state_is_will(option)) --will_wont_resp[option]; } if (will_wont_resp[option] == 0) { if (my_want_state_is_wont(option)) { switch (option) { case TELOPT_TM: /* * Special case for TM. We send a WILL, but pretend * we sent WONT. */ send_will(option, 0); set_my_want_state_wont(TELOPT_TM); set_my_state_wont(TELOPT_TM); return; case TELOPT_BINARY: /* binary mode */ case TELOPT_NAWS: /* window size */ case TELOPT_TSPEED: /* terminal speed */ case TELOPT_LFLOW: /* local flow control */ case TELOPT_TTYPE: /* terminal type option */ case TELOPT_SGA: /* no big deal */ #ifdef ENCRYPTION case TELOPT_ENCRYPT: /* encryption variable option */ #endif /* ENCRYPTION */ new_state_ok = 1; break; case TELOPT_NEW_ENVIRON: /* New environment variable option */ #ifdef OLD_ENVIRON if (my_state_is_will(TELOPT_OLD_ENVIRON)) send_wont(TELOPT_OLD_ENVIRON, 1); /* turn off the old */ goto env_common; case TELOPT_OLD_ENVIRON: /* Old environment variable option */ if (my_state_is_will(TELOPT_NEW_ENVIRON)) break; /* Don't enable if new one is in use! */ env_common: telopt_environ = option; #endif new_state_ok = 1; break; #ifdef AUTHENTICATION case TELOPT_AUTHENTICATION: if (autologin) new_state_ok = 1; break; #endif case TELOPT_XDISPLOC: /* X Display location */ if (env_getvalue("DISPLAY")) new_state_ok = 1; break; case TELOPT_LINEMODE: #ifdef KLUDGELINEMODE kludgelinemode = 0; send_do(TELOPT_SGA, 1); #endif set_my_want_state_will(TELOPT_LINEMODE); send_will(option, 0); set_my_state_will(TELOPT_LINEMODE); slc_init(); return; case TELOPT_ECHO: /* We're never going to echo... */ default: break; } if (new_state_ok) { set_my_want_state_will(option); send_will(option, 0); setconnmode(0); /* Set new tty mode */ } else { will_wont_resp[option]++; send_wont(option, 0); } } else { /* * Handle options that need more things done after the * other side has acknowledged the option. */ switch (option) { case TELOPT_LINEMODE: #ifdef KLUDGELINEMODE kludgelinemode = 0; send_do(TELOPT_SGA, 1); #endif set_my_state_will(option); slc_init(); send_do(TELOPT_SGA, 0); return; } } } set_my_state_will(option); } static void dontoption(int option) { if (will_wont_resp[option]) { --will_wont_resp[option]; if (will_wont_resp[option] && my_state_is_wont(option)) --will_wont_resp[option]; } if ((will_wont_resp[option] == 0) && my_want_state_is_will(option)) { switch (option) { case TELOPT_LINEMODE: linemode = 0; /* put us back to the default state */ break; #ifdef OLD_ENVIRON case TELOPT_NEW_ENVIRON: /* * The new environ option wasn't recognized, try * the old one. */ send_will(TELOPT_OLD_ENVIRON, 1); telopt_environ = TELOPT_OLD_ENVIRON; break; #endif } /* we always accept a DONT */ set_my_want_state_wont(option); if (my_state_is_will(option)) send_wont(option, 0); setconnmode(0); /* Set new tty mode */ } set_my_state_wont(option); } /* * Given a buffer returned by tgetent(), this routine will turn * the pipe separated list of names in the buffer into an array * of pointers to null terminated names. We toss out any bad, * duplicate, or verbose names (names with spaces). */ static const char *name_unknown = "UNKNOWN"; static const char *unknown[] = { NULL, NULL }; static const char ** mklist(char *buf, char *name) { int n; char c, *cp, **argvp, *cp2, **argv, **avt; if (name) { if (strlen(name) > 40) { name = 0; unknown[0] = name_unknown; } else { unknown[0] = name; upcase(name); } } else unknown[0] = name_unknown; /* * Count up the number of names. */ for (n = 1, cp = buf; *cp && *cp != ':'; cp++) { if (*cp == '|') n++; } /* * Allocate an array to put the name pointers into */ argv = (char **)malloc((n+3)*sizeof(char *)); if (argv == 0) return(unknown); /* * Fill up the array of pointers to names. */ *argv = 0; argvp = argv+1; n = 0; for (cp = cp2 = buf; (c = *cp); cp++) { if (c == '|' || c == ':') { *cp++ = '\0'; /* * Skip entries that have spaces or are over 40 * characters long. If this is our environment * name, then put it up front. Otherwise, as * long as this is not a duplicate name (case * insensitive) add it to the list. */ if (n || (cp - cp2 > 41)) ; else if (name && (strncasecmp(name, cp2, cp-cp2) == 0)) *argv = cp2; else if (is_unique(cp2, argv+1, argvp)) *argvp++ = cp2; if (c == ':') break; /* * Skip multiple delimiters. Reset cp2 to * the beginning of the next name. Reset n, * the flag for names with spaces. */ while ((c = *cp) == '|') cp++; cp2 = cp; n = 0; } /* * Skip entries with spaces or non-ascii values. * Convert lower case letters to upper case. */ if ((c == ' ') || !isascii(c)) n = 1; else if (islower(c)) *cp = toupper(c); } /* * Check for an old V6 2 character name. If the second * name points to the beginning of the buffer, and is * only 2 characters long, move it to the end of the array. */ if ((argv[1] == buf) && (strlen(argv[1]) == 2)) { --argvp; for (avt = &argv[1]; avt < argvp; avt++) *avt = *(avt+1); *argvp++ = buf; } /* * Duplicate last name, for TTYPE option, and null * terminate the array. If we didn't find a match on * our terminal name, put that name at the beginning. */ cp = *(argvp-1); *argvp++ = cp; *argvp = 0; if (*argv == 0) { if (name) *argv = name; else { --argvp; for (avt = argv; avt < argvp; avt++) *avt = *(avt+1); } } if (*argv) return((const char **)argv); else return(unknown); } static int is_unique(char *name, char **as, char **ae) { char **ap; int n; n = strlen(name) + 1; for (ap = as; ap < ae; ap++) if (strncasecmp(*ap, name, n) == 0) return(0); return (1); } #ifdef TERMCAP char termbuf[1024]; /*ARGSUSED*/ static int setupterm(char *tname, int fd, int *errp) { if (tgetent(termbuf, tname) == 1) { termbuf[1023] = '\0'; if (errp) *errp = 1; return(0); } if (errp) *errp = 0; return(-1); } #else #define termbuf ttytype extern char ttytype[]; #endif int resettermname = 1; static const char * gettermname(void) { char *tname; static const char **tnamep = 0; static const char **next; int err; if (resettermname) { resettermname = 0; if (tnamep && tnamep != unknown) free(tnamep); if ((tname = env_getvalue("TERM")) && (setupterm(tname, 1, &err) == 0)) { tnamep = mklist(termbuf, tname); } else { if (tname && (strlen(tname) <= 40)) { unknown[0] = tname; upcase(tname); } else unknown[0] = name_unknown; tnamep = unknown; } next = tnamep; } if (*next == 0) next = tnamep; return(*next++); } /* * suboption() * * Look at the sub-option buffer, and try to be helpful to the other * side. * * Currently we recognize: * * Terminal type, send request. * Terminal speed (send request). * Local flow control (is request). * Linemode */ static void suboption(void) { unsigned char subchar; printsub('<', subbuffer, SB_LEN()+2); switch (subchar = SB_GET()) { case TELOPT_TTYPE: if (my_want_state_is_wont(TELOPT_TTYPE)) return; if (SB_EOF() || SB_GET() != TELQUAL_SEND) { return; } else { const char *name; unsigned char temp[50]; int len; name = gettermname(); len = strlen(name) + 4 + 2; if (len < NETROOM()) { - sprintf(temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE, + snprintf(temp, sizeof(temp), "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE, TELQUAL_IS, name, IAC, SE); ring_supply_data(&netoring, temp, len); printsub('>', &temp[2], len-2); } else { ExitString("No room in buffer for terminal type.\n", 1); /*NOTREACHED*/ } } break; case TELOPT_TSPEED: if (my_want_state_is_wont(TELOPT_TSPEED)) return; if (SB_EOF()) return; if (SB_GET() == TELQUAL_SEND) { long ospeed, ispeed; unsigned char temp[50]; int len; TerminalSpeeds(&ispeed, &ospeed); - sprintf((char *)temp, "%c%c%c%c%ld,%ld%c%c", IAC, SB, TELOPT_TSPEED, + snprintf((char *)temp, sizeof(temp), "%c%c%c%c%ld,%ld%c%c", IAC, SB, TELOPT_TSPEED, TELQUAL_IS, ospeed, ispeed, IAC, SE); len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */ if (len < NETROOM()) { ring_supply_data(&netoring, temp, len); printsub('>', temp+2, len - 2); } /*@*/ else printf("lm_will: not enough room in buffer\n"); } break; case TELOPT_LFLOW: if (my_want_state_is_wont(TELOPT_LFLOW)) return; if (SB_EOF()) return; switch(SB_GET()) { case LFLOW_RESTART_ANY: restartany = 1; break; case LFLOW_RESTART_XON: restartany = 0; break; case LFLOW_ON: localflow = 1; break; case LFLOW_OFF: localflow = 0; break; default: return; } setcommandmode(); setconnmode(0); break; case TELOPT_LINEMODE: if (my_want_state_is_wont(TELOPT_LINEMODE)) return; if (SB_EOF()) return; switch (SB_GET()) { case WILL: lm_will(subpointer, SB_LEN()); break; case WONT: lm_wont(subpointer, SB_LEN()); break; case DO: lm_do(subpointer, SB_LEN()); break; case DONT: lm_dont(subpointer, SB_LEN()); break; case LM_SLC: slc(subpointer, SB_LEN()); break; case LM_MODE: lm_mode(subpointer, SB_LEN(), 0); break; default: break; } break; #ifdef OLD_ENVIRON case TELOPT_OLD_ENVIRON: #endif case TELOPT_NEW_ENVIRON: if (SB_EOF()) return; switch(SB_PEEK()) { case TELQUAL_IS: case TELQUAL_INFO: if (my_want_state_is_dont(subchar)) return; break; case TELQUAL_SEND: if (my_want_state_is_wont(subchar)) { return; } break; default: return; } env_opt(subpointer, SB_LEN()); break; case TELOPT_XDISPLOC: if (my_want_state_is_wont(TELOPT_XDISPLOC)) return; if (SB_EOF()) return; if (SB_GET() == TELQUAL_SEND) { unsigned char temp[50], *dp; int len; if ((dp = env_getvalue("DISPLAY")) == NULL || strlen(dp) > sizeof(temp) - 7) { /* * Something happened, we no longer have a DISPLAY * variable. Or it is too long. So, turn off the option. */ send_wont(TELOPT_XDISPLOC, 1); break; } snprintf(temp, sizeof(temp), "%c%c%c%c%s%c%c", IAC, SB, TELOPT_XDISPLOC, TELQUAL_IS, dp, IAC, SE); len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */ if (len < NETROOM()) { ring_supply_data(&netoring, temp, len); printsub('>', temp+2, len - 2); } /*@*/ else printf("lm_will: not enough room in buffer\n"); } break; #ifdef AUTHENTICATION case TELOPT_AUTHENTICATION: { if (!autologin) break; if (SB_EOF()) return; switch(SB_GET()) { case TELQUAL_IS: if (my_want_state_is_dont(TELOPT_AUTHENTICATION)) return; auth_is(subpointer, SB_LEN()); break; case TELQUAL_SEND: if (my_want_state_is_wont(TELOPT_AUTHENTICATION)) return; auth_send(subpointer, SB_LEN()); break; case TELQUAL_REPLY: if (my_want_state_is_wont(TELOPT_AUTHENTICATION)) return; auth_reply(subpointer, SB_LEN()); break; case TELQUAL_NAME: if (my_want_state_is_dont(TELOPT_AUTHENTICATION)) return; auth_name(subpointer, SB_LEN()); break; } } break; #endif #ifdef ENCRYPTION case TELOPT_ENCRYPT: if (SB_EOF()) return; switch(SB_GET()) { case ENCRYPT_START: if (my_want_state_is_dont(TELOPT_ENCRYPT)) return; encrypt_start(subpointer, SB_LEN()); break; case ENCRYPT_END: if (my_want_state_is_dont(TELOPT_ENCRYPT)) return; encrypt_end(); break; case ENCRYPT_SUPPORT: if (my_want_state_is_wont(TELOPT_ENCRYPT)) return; encrypt_support(subpointer, SB_LEN()); break; case ENCRYPT_REQSTART: if (my_want_state_is_wont(TELOPT_ENCRYPT)) return; encrypt_request_start(subpointer, SB_LEN()); break; case ENCRYPT_REQEND: if (my_want_state_is_wont(TELOPT_ENCRYPT)) return; /* * We can always send an REQEND so that we cannot * get stuck encrypting. We should only get this * if we have been able to get in the correct mode * anyhow. */ encrypt_request_end(); break; case ENCRYPT_IS: if (my_want_state_is_dont(TELOPT_ENCRYPT)) return; encrypt_is(subpointer, SB_LEN()); break; case ENCRYPT_REPLY: if (my_want_state_is_wont(TELOPT_ENCRYPT)) return; encrypt_reply(subpointer, SB_LEN()); break; case ENCRYPT_ENC_KEYID: if (my_want_state_is_dont(TELOPT_ENCRYPT)) return; encrypt_enc_keyid(subpointer, SB_LEN()); break; case ENCRYPT_DEC_KEYID: if (my_want_state_is_wont(TELOPT_ENCRYPT)) return; encrypt_dec_keyid(subpointer, SB_LEN()); break; default: break; } break; #endif /* ENCRYPTION */ default: break; } } static unsigned char str_lm[] = { IAC, SB, TELOPT_LINEMODE, 0, 0, IAC, SE }; void lm_will(unsigned char *cmd, int len) { if (len < 1) { /*@*/ printf("lm_will: no command!!!\n"); /* Should not happen... */ return; } switch(cmd[0]) { case LM_FORWARDMASK: /* We shouldn't ever get this... */ default: str_lm[3] = DONT; str_lm[4] = cmd[0]; if (NETROOM() > (int)sizeof(str_lm)) { ring_supply_data(&netoring, str_lm, sizeof(str_lm)); printsub('>', &str_lm[2], sizeof(str_lm)-2); } /*@*/ else printf("lm_will: not enough room in buffer\n"); break; } } void lm_wont(unsigned char *cmd, int len) { if (len < 1) { /*@*/ printf("lm_wont: no command!!!\n"); /* Should not happen... */ return; } switch(cmd[0]) { case LM_FORWARDMASK: /* We shouldn't ever get this... */ default: /* We are always DONT, so don't respond */ return; } } void lm_do(unsigned char *cmd, int len) { if (len < 1) { /*@*/ printf("lm_do: no command!!!\n"); /* Should not happen... */ return; } switch(cmd[0]) { case LM_FORWARDMASK: default: str_lm[3] = WONT; str_lm[4] = cmd[0]; if (NETROOM() > (int)sizeof(str_lm)) { ring_supply_data(&netoring, str_lm, sizeof(str_lm)); printsub('>', &str_lm[2], sizeof(str_lm)-2); } /*@*/ else printf("lm_do: not enough room in buffer\n"); break; } } void lm_dont(unsigned char *cmd, int len) { if (len < 1) { /*@*/ printf("lm_dont: no command!!!\n"); /* Should not happen... */ return; } switch(cmd[0]) { case LM_FORWARDMASK: default: /* we are always WONT, so don't respond */ break; } } static unsigned char str_lm_mode[] = { IAC, SB, TELOPT_LINEMODE, LM_MODE, 0, IAC, SE }; void lm_mode(unsigned char *cmd, int len, int init) { if (len != 1) return; if ((linemode&MODE_MASK&~MODE_ACK) == *cmd) return; if (*cmd&MODE_ACK) return; linemode = *cmd&(MODE_MASK&~MODE_ACK); str_lm_mode[4] = linemode; if (!init) str_lm_mode[4] |= MODE_ACK; if (NETROOM() > (int)sizeof(str_lm_mode)) { ring_supply_data(&netoring, str_lm_mode, sizeof(str_lm_mode)); printsub('>', &str_lm_mode[2], sizeof(str_lm_mode)-2); } /*@*/ else printf("lm_mode: not enough room in buffer\n"); setconnmode(0); /* set changed mode */ } /* * slc() * Handle special character suboption of LINEMODE. */ struct spc { cc_t val; cc_t *valp; char flags; /* Current flags & level */ char mylevel; /* Maximum level & flags */ } spc_data[NSLC+1]; #define SLC_IMPORT 0 #define SLC_EXPORT 1 #define SLC_RVALUE 2 static int slc_mode = SLC_EXPORT; void slc_init(void) { struct spc *spcp; localchars = 1; for (spcp = spc_data; spcp < &spc_data[NSLC+1]; spcp++) { spcp->val = 0; spcp->valp = 0; spcp->flags = spcp->mylevel = SLC_NOSUPPORT; } #define initfunc(func, flags) { \ spcp = &spc_data[func]; \ if ((spcp->valp = tcval(func))) { \ spcp->val = *spcp->valp; \ spcp->mylevel = SLC_VARIABLE|flags; \ } else { \ spcp->val = 0; \ spcp->mylevel = SLC_DEFAULT; \ } \ } initfunc(SLC_SYNCH, 0); /* No BRK */ initfunc(SLC_AO, 0); initfunc(SLC_AYT, 0); /* No EOR */ initfunc(SLC_ABORT, SLC_FLUSHIN|SLC_FLUSHOUT); initfunc(SLC_EOF, 0); #ifndef SYSV_TERMIO initfunc(SLC_SUSP, SLC_FLUSHIN); #endif initfunc(SLC_EC, 0); initfunc(SLC_EL, 0); #ifndef SYSV_TERMIO initfunc(SLC_EW, 0); initfunc(SLC_RP, 0); initfunc(SLC_LNEXT, 0); #endif initfunc(SLC_XON, 0); initfunc(SLC_XOFF, 0); #ifdef SYSV_TERMIO spc_data[SLC_XON].mylevel = SLC_CANTCHANGE; spc_data[SLC_XOFF].mylevel = SLC_CANTCHANGE; #endif initfunc(SLC_FORW1, 0); #ifdef USE_TERMIO initfunc(SLC_FORW2, 0); /* No FORW2 */ #endif initfunc(SLC_IP, SLC_FLUSHIN|SLC_FLUSHOUT); #undef initfunc if (slc_mode == SLC_EXPORT) slc_export(); else slc_import(1); } void slcstate(void) { printf("Special characters are %s values\n", slc_mode == SLC_IMPORT ? "remote default" : slc_mode == SLC_EXPORT ? "local" : "remote"); } void slc_mode_export(void) { slc_mode = SLC_EXPORT; if (my_state_is_will(TELOPT_LINEMODE)) slc_export(); } void slc_mode_import(int def) { slc_mode = def ? SLC_IMPORT : SLC_RVALUE; if (my_state_is_will(TELOPT_LINEMODE)) slc_import(def); } unsigned char slc_import_val[] = { IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_VARIABLE, 0, IAC, SE }; unsigned char slc_import_def[] = { IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_DEFAULT, 0, IAC, SE }; void slc_import(int def) { if (NETROOM() > (int)sizeof(slc_import_val)) { if (def) { ring_supply_data(&netoring, slc_import_def, sizeof(slc_import_def)); printsub('>', &slc_import_def[2], sizeof(slc_import_def)-2); } else { ring_supply_data(&netoring, slc_import_val, sizeof(slc_import_val)); printsub('>', &slc_import_val[2], sizeof(slc_import_val)-2); } } /*@*/ else printf("slc_import: not enough room\n"); } void slc_export(void) { struct spc *spcp; TerminalDefaultChars(); slc_start_reply(); for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { if (spcp->mylevel != SLC_NOSUPPORT) { if (spcp->val == (cc_t)(_POSIX_VDISABLE)) spcp->flags = SLC_NOSUPPORT; else spcp->flags = spcp->mylevel; if (spcp->valp) spcp->val = *spcp->valp; slc_add_reply(spcp - spc_data, spcp->flags, spcp->val); } } slc_end_reply(); (void)slc_update(); setconnmode(1); /* Make sure the character values are set */ } void slc(unsigned char *cp, int len) { struct spc *spcp; int func,level; slc_start_reply(); for (; len >= 3; len -=3, cp +=3) { func = cp[SLC_FUNC]; if (func == 0) { /* * Client side: always ignore 0 function. */ continue; } if (func > NSLC) { if ((cp[SLC_FLAGS] & SLC_LEVELBITS) != SLC_NOSUPPORT) slc_add_reply(func, SLC_NOSUPPORT, 0); continue; } spcp = &spc_data[func]; level = cp[SLC_FLAGS]&(SLC_LEVELBITS|SLC_ACK); if ((cp[SLC_VALUE] == (unsigned char)spcp->val) && ((level&SLC_LEVELBITS) == (spcp->flags&SLC_LEVELBITS))) { continue; } if (level == (SLC_DEFAULT|SLC_ACK)) { /* * This is an error condition, the SLC_ACK * bit should never be set for the SLC_DEFAULT * level. Our best guess to recover is to * ignore the SLC_ACK bit. */ cp[SLC_FLAGS] &= ~SLC_ACK; } if (level == ((spcp->flags&SLC_LEVELBITS)|SLC_ACK)) { spcp->val = (cc_t)cp[SLC_VALUE]; spcp->flags = cp[SLC_FLAGS]; /* include SLC_ACK */ continue; } level &= ~SLC_ACK; if (level <= (spcp->mylevel&SLC_LEVELBITS)) { spcp->flags = cp[SLC_FLAGS]|SLC_ACK; spcp->val = (cc_t)cp[SLC_VALUE]; } if (level == SLC_DEFAULT) { if ((spcp->mylevel&SLC_LEVELBITS) != SLC_DEFAULT) spcp->flags = spcp->mylevel; else spcp->flags = SLC_NOSUPPORT; } slc_add_reply(func, spcp->flags, spcp->val); } slc_end_reply(); if (slc_update()) setconnmode(1); /* set the new character values */ } void slc_check(void) { struct spc *spcp; slc_start_reply(); for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { if (spcp->valp && spcp->val != *spcp->valp) { spcp->val = *spcp->valp; if (spcp->val == (cc_t)(_POSIX_VDISABLE)) spcp->flags = SLC_NOSUPPORT; else spcp->flags = spcp->mylevel; slc_add_reply(spcp - spc_data, spcp->flags, spcp->val); } } slc_end_reply(); setconnmode(1); } unsigned char slc_reply[128]; unsigned char const * const slc_reply_eom = &slc_reply[sizeof(slc_reply)]; unsigned char *slc_replyp; void slc_start_reply(void) { slc_replyp = slc_reply; *slc_replyp++ = IAC; *slc_replyp++ = SB; *slc_replyp++ = TELOPT_LINEMODE; *slc_replyp++ = LM_SLC; } void slc_add_reply(unsigned char func, unsigned char flags, cc_t value) { /* A sequence of up to 6 bytes my be written for this member of the SLC * suboption list by this function. The end of negotiation command, * which is written by slc_end_reply(), will require 2 additional * bytes. Do not proceed unless there is sufficient space for these * items. */ if (&slc_replyp[6+2] > slc_reply_eom) return; if ((*slc_replyp++ = func) == IAC) *slc_replyp++ = IAC; if ((*slc_replyp++ = flags) == IAC) *slc_replyp++ = IAC; if ((*slc_replyp++ = (unsigned char)value) == IAC) *slc_replyp++ = IAC; } void slc_end_reply(void) { int len; /* The end of negotiation command requires 2 bytes. */ if (&slc_replyp[2] > slc_reply_eom) return; *slc_replyp++ = IAC; *slc_replyp++ = SE; len = slc_replyp - slc_reply; if (len <= 6) return; if (NETROOM() > len) { ring_supply_data(&netoring, slc_reply, slc_replyp - slc_reply); printsub('>', &slc_reply[2], slc_replyp - slc_reply - 2); } /*@*/else printf("slc_end_reply: not enough room\n"); } int slc_update(void) { struct spc *spcp; int need_update = 0; for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { if (!(spcp->flags&SLC_ACK)) continue; spcp->flags &= ~SLC_ACK; if (spcp->valp && (*spcp->valp != spcp->val)) { *spcp->valp = spcp->val; need_update = 1; } } return(need_update); } #ifdef OLD_ENVIRON # ifdef ENV_HACK /* * Earlier version of telnet/telnetd from the BSD code had * the definitions of VALUE and VAR reversed. To ensure * maximum interoperability, we assume that the server is * an older BSD server, until proven otherwise. The newer * BSD servers should be able to handle either definition, * so it is better to use the wrong values if we don't * know what type of server it is. */ int env_auto = 1; int old_env_var = OLD_ENV_VAR; int old_env_value = OLD_ENV_VALUE; # else # define old_env_var OLD_ENV_VAR # define old_env_value OLD_ENV_VALUE # endif #endif void env_opt(unsigned char *buf, int len) { unsigned char *ep = 0, *epc = 0; int i; switch(buf[0]&0xff) { case TELQUAL_SEND: env_opt_start(); if (len == 1) { env_opt_add(NULL); } else for (i = 1; i < len; i++) { switch (buf[i]&0xff) { #ifdef OLD_ENVIRON case OLD_ENV_VAR: # ifdef ENV_HACK if (telopt_environ == TELOPT_OLD_ENVIRON && env_auto) { /* Server has the same definitions */ old_env_var = OLD_ENV_VAR; old_env_value = OLD_ENV_VALUE; } /* FALLTHROUGH */ # endif case OLD_ENV_VALUE: /* * Although OLD_ENV_VALUE is not legal, we will * still recognize it, just in case it is an * old server that has VAR & VALUE mixed up... */ /* FALLTHROUGH */ #else case NEW_ENV_VAR: #endif case ENV_USERVAR: if (ep) { *epc = 0; env_opt_add(ep); } ep = epc = &buf[i+1]; break; case ENV_ESC: i++; /*FALLTHROUGH*/ default: if (epc) *epc++ = buf[i]; break; } } if (ep) { *epc = 0; env_opt_add(ep); } env_opt_end(1); break; case TELQUAL_IS: case TELQUAL_INFO: /* Ignore for now. We shouldn't get it anyway. */ break; default: break; } } #define OPT_REPLY_SIZE (2 * SUBBUFSIZE) unsigned char *opt_reply = NULL; unsigned char *opt_replyp; unsigned char *opt_replyend; void env_opt_start(void) { if (opt_reply) opt_reply = (unsigned char *)realloc(opt_reply, OPT_REPLY_SIZE); else opt_reply = (unsigned char *)malloc(OPT_REPLY_SIZE); if (opt_reply == NULL) { /*@*/ printf("env_opt_start: malloc()/realloc() failed!!!\n"); opt_reply = opt_replyp = opt_replyend = NULL; return; } opt_replyp = opt_reply; opt_replyend = opt_reply + OPT_REPLY_SIZE; *opt_replyp++ = IAC; *opt_replyp++ = SB; *opt_replyp++ = telopt_environ; *opt_replyp++ = TELQUAL_IS; } void env_opt_start_info(void) { env_opt_start(); if (opt_replyp) opt_replyp[-1] = TELQUAL_INFO; } void env_opt_add(unsigned char *ep) { unsigned char *vp, c; if (opt_reply == NULL) /*XXX*/ return; /*XXX*/ if (ep == NULL || *ep == '\0') { /* Send user defined variables first. */ env_default(1, 0); while ((ep = env_default(0, 0))) env_opt_add(ep); /* Now add the list of well know variables. */ env_default(1, 1); while ((ep = env_default(0, 1))) env_opt_add(ep); return; } vp = env_getvalue(ep); if (opt_replyp + (vp ? 2 * strlen((char *)vp) : 0) + 2 * strlen((char *)ep) + 6 > opt_replyend) { int len; opt_replyend += OPT_REPLY_SIZE; len = opt_replyend - opt_reply; opt_reply = (unsigned char *)realloc(opt_reply, len); if (opt_reply == NULL) { /*@*/ printf("env_opt_add: realloc() failed!!!\n"); opt_reply = opt_replyp = opt_replyend = NULL; return; } opt_replyp = opt_reply + len - (opt_replyend - opt_replyp); opt_replyend = opt_reply + len; } if (opt_welldefined(ep)) #ifdef OLD_ENVIRON if (telopt_environ == TELOPT_OLD_ENVIRON) *opt_replyp++ = old_env_var; else #endif *opt_replyp++ = NEW_ENV_VAR; else *opt_replyp++ = ENV_USERVAR; for (;;) { while ((c = *ep++)) { if (opt_replyp + (2 + 2) > opt_replyend) return; switch(c&0xff) { case IAC: *opt_replyp++ = IAC; break; case NEW_ENV_VAR: case NEW_ENV_VALUE: case ENV_ESC: case ENV_USERVAR: *opt_replyp++ = ENV_ESC; break; } *opt_replyp++ = c; } if ((ep = vp)) { if (opt_replyp + (1 + 2 + 2) > opt_replyend) return; #ifdef OLD_ENVIRON if (telopt_environ == TELOPT_OLD_ENVIRON) *opt_replyp++ = old_env_value; else #endif *opt_replyp++ = NEW_ENV_VALUE; vp = NULL; } else break; } } int opt_welldefined(const char *ep) { if ((strcmp(ep, "USER") == 0) || (strcmp(ep, "DISPLAY") == 0) || (strcmp(ep, "PRINTER") == 0) || (strcmp(ep, "SYSTEMTYPE") == 0) || (strcmp(ep, "JOB") == 0) || (strcmp(ep, "ACCT") == 0)) return(1); return(0); } void env_opt_end(int emptyok) { int len; if (opt_replyp + 2 > opt_replyend) return; len = opt_replyp + 2 - opt_reply; if (emptyok || len > 6) { *opt_replyp++ = IAC; *opt_replyp++ = SE; if (NETROOM() > len) { ring_supply_data(&netoring, opt_reply, len); printsub('>', &opt_reply[2], len - 2); } /*@*/ else printf("slc_end_reply: not enough room\n"); } if (opt_reply) { free(opt_reply); opt_reply = opt_replyp = opt_replyend = NULL; } } int telrcv(void) { int c; int scc; unsigned char *sbp; int count; int returnValue = 0; scc = 0; count = 0; while (TTYROOM() > 2) { if (scc == 0) { if (count) { ring_consumed(&netiring, count); returnValue = 1; count = 0; } sbp = netiring.consume; scc = ring_full_consecutive(&netiring); if (scc == 0) { /* No more data coming in */ break; } } c = *sbp++ & 0xff, scc--; count++; #ifdef ENCRYPTION if (decrypt_input) c = (*decrypt_input)(c); #endif /* ENCRYPTION */ switch (telrcv_state) { case TS_CR: telrcv_state = TS_DATA; if (c == '\0') { break; /* Ignore \0 after CR */ } else if ((c == '\n') && my_want_state_is_dont(TELOPT_ECHO) && !crmod) { TTYADD(c); break; } /* FALLTHROUGH */ case TS_DATA: if (c == IAC && telnetport >= 0) { telrcv_state = TS_IAC; break; } /* * The 'crmod' hack (see following) is needed * since we can't * set CRMOD on output only. * Machines like MULTICS like to send \r without * \n; since we must turn off CRMOD to get proper * input, the mapping is done here (sigh). */ if ((c == '\r') && my_want_state_is_dont(TELOPT_BINARY)) { if (scc > 0) { c = *sbp&0xff; #ifdef ENCRYPTION if (decrypt_input) c = (*decrypt_input)(c); #endif /* ENCRYPTION */ if (c == 0) { sbp++, scc--; count++; /* a "true" CR */ TTYADD('\r'); } else if (my_want_state_is_dont(TELOPT_ECHO) && (c == '\n')) { sbp++, scc--; count++; TTYADD('\n'); } else { #ifdef ENCRYPTION if (decrypt_input) (*decrypt_input)(-1); #endif /* ENCRYPTION */ TTYADD('\r'); if (crmod) { TTYADD('\n'); } } } else { telrcv_state = TS_CR; TTYADD('\r'); if (crmod) { TTYADD('\n'); } } } else { TTYADD(c); } continue; case TS_IAC: process_iac: switch (c) { case WILL: telrcv_state = TS_WILL; continue; case WONT: telrcv_state = TS_WONT; continue; case DO: telrcv_state = TS_DO; continue; case DONT: telrcv_state = TS_DONT; continue; case DM: /* * We may have missed an urgent notification, * so make sure we flush whatever is in the * buffer currently. */ printoption("RCVD", IAC, DM); SYNCHing = 1; (void) ttyflush(1); SYNCHing = stilloob(); settimer(gotDM); break; case SB: SB_CLEAR(); telrcv_state = TS_SB; continue; case IAC: TTYADD(IAC); break; case NOP: case GA: default: printoption("RCVD", IAC, c); break; } telrcv_state = TS_DATA; continue; case TS_WILL: printoption("RCVD", WILL, c); willoption(c); telrcv_state = TS_DATA; continue; case TS_WONT: printoption("RCVD", WONT, c); wontoption(c); telrcv_state = TS_DATA; continue; case TS_DO: printoption("RCVD", DO, c); dooption(c); if (c == TELOPT_NAWS) { sendnaws(); } else if (c == TELOPT_LFLOW) { localflow = 1; setcommandmode(); setconnmode(0); } telrcv_state = TS_DATA; continue; case TS_DONT: printoption("RCVD", DONT, c); dontoption(c); flushline = 1; setconnmode(0); /* set new tty mode (maybe) */ telrcv_state = TS_DATA; continue; case TS_SB: if (c == IAC) { telrcv_state = TS_SE; } else { SB_ACCUM(c); } continue; case TS_SE: if (c != SE) { if (c != IAC) { /* * This is an error. We only expect to get * "IAC IAC" or "IAC SE". Several things may * have happend. An IAC was not doubled, the * IAC SE was left off, or another option got * inserted into the suboption are all possibilities. * If we assume that the IAC was not doubled, * and really the IAC SE was left off, we could * get into an infinate loop here. So, instead, * we terminate the suboption, and process the * partial suboption if we can. */ SB_ACCUM(IAC); SB_ACCUM(c); subpointer -= 2; SB_TERM(); printoption("In SUBOPTION processing, RCVD", IAC, c); suboption(); /* handle sub-option */ telrcv_state = TS_IAC; goto process_iac; } SB_ACCUM(c); telrcv_state = TS_SB; } else { SB_ACCUM(IAC); SB_ACCUM(SE); subpointer -= 2; SB_TERM(); suboption(); /* handle sub-option */ telrcv_state = TS_DATA; } } } if (count) ring_consumed(&netiring, count); return returnValue||count; } static int bol = 1, local = 0; int rlogin_susp(void) { if (local) { local = 0; bol = 1; command(0, "z\n", 2); return(1); } return(0); } static int telsnd(void) { int tcc; int count; int returnValue = 0; unsigned char *tbp; tcc = 0; count = 0; while (NETROOM() > 2) { int sc; int c; if (tcc == 0) { if (count) { ring_consumed(&ttyiring, count); returnValue = 1; count = 0; } tbp = ttyiring.consume; tcc = ring_full_consecutive(&ttyiring); if (tcc == 0) { break; } } c = *tbp++ & 0xff, sc = strip(c), tcc--; count++; if (rlogin != _POSIX_VDISABLE) { if (bol) { bol = 0; if (sc == rlogin) { local = 1; continue; } } else if (local) { local = 0; if (sc == '.' || c == termEofChar) { bol = 1; command(0, "close\n", 6); continue; } if (sc == termSuspChar) { bol = 1; command(0, "z\n", 2); continue; } if (sc == escape) { command(0, tbp, tcc); bol = 1; count += tcc; tcc = 0; flushline = 1; break; } if (sc != rlogin) { ++tcc; --tbp; --count; c = sc = rlogin; } } if ((sc == '\n') || (sc == '\r')) bol = 1; } else if (escape != _POSIX_VDISABLE && sc == escape) { /* * Double escape is a pass through of a single escape character. */ if (tcc && strip(*tbp) == escape) { tbp++; tcc--; count++; bol = 0; } else { command(0, (char *)tbp, tcc); bol = 1; count += tcc; tcc = 0; flushline = 1; break; } } else bol = 0; #ifdef KLUDGELINEMODE if (kludgelinemode && (globalmode&MODE_EDIT) && (sc == echoc)) { if (tcc > 0 && strip(*tbp) == echoc) { tcc--; tbp++; count++; } else { dontlecho = !dontlecho; settimer(echotoggle); setconnmode(0); flushline = 1; break; } } #endif if (MODE_LOCAL_CHARS(globalmode)) { if (TerminalSpecialChars(sc) == 0) { bol = 1; break; } } if (my_want_state_is_wont(TELOPT_BINARY)) { switch (c) { case '\n': /* * If we are in CRMOD mode (\r ==> \n) * on our local machine, then probably * a newline (unix) is CRLF (TELNET). */ if (MODE_LOCAL_CHARS(globalmode)) { NETADD('\r'); } NETADD('\n'); bol = flushline = 1; break; case '\r': if (!crlf) { NET2ADD('\r', '\0'); } else { NET2ADD('\r', '\n'); } bol = flushline = 1; break; case IAC: NET2ADD(IAC, IAC); break; default: NETADD(c); break; } } else if (c == IAC) { NET2ADD(IAC, IAC); } else { NETADD(c); } } if (count) ring_consumed(&ttyiring, count); return returnValue||count; /* Non-zero if we did anything */ } /* * Scheduler() * * Try to do something. * * If we do something useful, return 1; else return 0. * */ static int Scheduler(int block) { /* One wants to be a bit careful about setting returnValue * to one, since a one implies we did some useful work, * and therefore probably won't be called to block next */ int returnValue; int netin, netout, netex, ttyin, ttyout; /* Decide which rings should be processed */ netout = ring_full_count(&netoring) && (flushline || (my_want_state_is_wont(TELOPT_LINEMODE) #ifdef KLUDGELINEMODE && (!kludgelinemode || my_want_state_is_do(TELOPT_SGA)) #endif ) || my_want_state_is_will(TELOPT_BINARY)); ttyout = ring_full_count(&ttyoring); ttyin = ring_empty_count(&ttyiring) && (clienteof == 0); netin = !ISend && ring_empty_count(&netiring); netex = !SYNCHing; /* Call to system code to process rings */ returnValue = process_rings(netin, netout, netex, ttyin, ttyout, !block); /* Now, look at the input rings, looking for work to do. */ if (ring_full_count(&ttyiring)) { returnValue |= telsnd(); } if (ring_full_count(&netiring)) { returnValue |= telrcv(); } return returnValue; } #ifdef AUTHENTICATION #define __unusedhere #else #define __unusedhere __unused #endif /* * Select from tty and network... */ void telnet(char *user __unusedhere) { sys_telnet_init(); #ifdef AUTHENTICATION #ifdef ENCRYPTION { static char local_host[256] = { 0 }; if (!local_host[0]) { gethostname(local_host, sizeof(local_host)); local_host[sizeof(local_host)-1] = 0; } auth_encrypt_init(local_host, hostname, "TELNET", 0); auth_encrypt_user(user); } #endif #endif if (telnetport > 0) { #ifdef AUTHENTICATION if (autologin) send_will(TELOPT_AUTHENTICATION, 1); #endif #ifdef ENCRYPTION send_do(TELOPT_ENCRYPT, 1); send_will(TELOPT_ENCRYPT, 1); #endif /* ENCRYPTION */ send_do(TELOPT_SGA, 1); send_will(TELOPT_TTYPE, 1); send_will(TELOPT_NAWS, 1); send_will(TELOPT_TSPEED, 1); send_will(TELOPT_LFLOW, 1); send_will(TELOPT_LINEMODE, 1); send_will(TELOPT_NEW_ENVIRON, 1); send_do(TELOPT_STATUS, 1); if (env_getvalue("DISPLAY")) send_will(TELOPT_XDISPLOC, 1); if (eight) tel_enter_binary(eight); } for (;;) { int schedValue; while ((schedValue = Scheduler(0)) != 0) { if (schedValue == -1) { setcommandmode(); return; } } if (Scheduler(1) == -1) { setcommandmode(); return; } } } #if 0 /* XXX - this not being in is a bug */ /* * nextitem() * * Return the address of the next "item" in the TELNET data * stream. This will be the address of the next character if * the current address is a user data character, or it will * be the address of the character following the TELNET command * if the current address is a TELNET IAC ("I Am a Command") * character. */ static char * nextitem(char *current) { if ((*current&0xff) != IAC) { return current+1; } switch (*(current+1)&0xff) { case DO: case DONT: case WILL: case WONT: return current+3; case SB: /* loop forever looking for the SE */ { char *look = current+2; for (;;) { if ((*look++&0xff) == IAC) { if ((*look++&0xff) == SE) { return look; } } } } default: return current+2; } } #endif /* 0 */ /* * netclear() * * We are about to do a TELNET SYNCH operation. Clear * the path to the network. * * Things are a bit tricky since we may have sent the first * byte or so of a previous TELNET command into the network. * So, we have to scan the network buffer from the beginning * until we are up to where we want to be. * * A side effect of what we do, just to keep things * simple, is to clear the urgent data pointer. The principal * caller should be setting the urgent data pointer AFTER calling * us in any case. */ static void netclear(void) { /* Deleted */ } /* * These routines add various telnet commands to the data stream. */ static void doflush(void) { NET2ADD(IAC, DO); NETADD(TELOPT_TM); flushline = 1; flushout = 1; (void) ttyflush(1); /* Flush/drop output */ /* do printoption AFTER flush, otherwise the output gets tossed... */ printoption("SENT", DO, TELOPT_TM); } void xmitAO(void) { NET2ADD(IAC, AO); printoption("SENT", IAC, AO); if (autoflush) { doflush(); } } void xmitEL(void) { NET2ADD(IAC, EL); printoption("SENT", IAC, EL); } void xmitEC(void) { NET2ADD(IAC, EC); printoption("SENT", IAC, EC); } int dosynch(char *ch __unused) { netclear(); /* clear the path to the network */ NETADD(IAC); setneturg(); NETADD(DM); printoption("SENT", IAC, DM); return 1; } int want_status_response = 0; int get_status(char *ch __unused) { unsigned char tmp[16]; unsigned char *cp; if (my_want_state_is_dont(TELOPT_STATUS)) { printf("Remote side does not support STATUS option\n"); return 0; } cp = tmp; *cp++ = IAC; *cp++ = SB; *cp++ = TELOPT_STATUS; *cp++ = TELQUAL_SEND; *cp++ = IAC; *cp++ = SE; if (NETROOM() >= cp - tmp) { ring_supply_data(&netoring, tmp, cp-tmp); printsub('>', tmp+2, cp - tmp - 2); } ++want_status_response; return 1; } void intp(void) { NET2ADD(IAC, IP); printoption("SENT", IAC, IP); flushline = 1; if (autoflush) { doflush(); } if (autosynch) { dosynch(NULL); } } void sendbrk(void) { NET2ADD(IAC, BREAK); printoption("SENT", IAC, BREAK); flushline = 1; if (autoflush) { doflush(); } if (autosynch) { dosynch(NULL); } } void sendabort(void) { NET2ADD(IAC, ABORT); printoption("SENT", IAC, ABORT); flushline = 1; if (autoflush) { doflush(); } if (autosynch) { dosynch(NULL); } } void sendsusp(void) { NET2ADD(IAC, SUSP); printoption("SENT", IAC, SUSP); flushline = 1; if (autoflush) { doflush(); } if (autosynch) { dosynch(NULL); } } void sendeof(void) { NET2ADD(IAC, xEOF); printoption("SENT", IAC, xEOF); } void sendayt(void) { NET2ADD(IAC, AYT); printoption("SENT", IAC, AYT); } /* * Send a window size update to the remote system. */ void sendnaws(void) { long rows, cols; unsigned char tmp[16]; unsigned char *cp; if (my_state_is_wont(TELOPT_NAWS)) return; #define PUTSHORT(cp, x) { if ((*cp++ = ((x)>>8)&0xff) == IAC) *cp++ = IAC; \ if ((*cp++ = ((x))&0xff) == IAC) *cp++ = IAC; } if (TerminalWindowSize(&rows, &cols) == 0) { /* Failed */ return; } cp = tmp; *cp++ = IAC; *cp++ = SB; *cp++ = TELOPT_NAWS; PUTSHORT(cp, cols); PUTSHORT(cp, rows); *cp++ = IAC; *cp++ = SE; if (NETROOM() >= cp - tmp) { ring_supply_data(&netoring, tmp, cp-tmp); printsub('>', tmp+2, cp - tmp - 2); } } void tel_enter_binary(int rw) { if (rw&1) send_do(TELOPT_BINARY, 1); if (rw&2) send_will(TELOPT_BINARY, 1); } void tel_leave_binary(int rw) { if (rw&1) send_dont(TELOPT_BINARY, 1); if (rw&2) send_wont(TELOPT_BINARY, 1); } Index: stable/11/contrib/telnet/telnet/utilities.c =================================================================== --- stable/11/contrib/telnet/telnet/utilities.c (revision 350139) +++ stable/11/contrib/telnet/telnet/utilities.c (revision 350140) @@ -1,912 +1,912 @@ /* * Copyright (c) 1988, 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[] = "@(#)utilities.c 8.3 (Berkeley) 5/30/95"; #endif #endif #include __FBSDID("$FreeBSD$"); #define TELOPTS #define TELCMDS #define SLC_NAMES #include #include #include #include #include #include #include #include "general.h" #include "fdset.h" #include "ring.h" #include "defines.h" #include "externs.h" #ifdef AUTHENTICATION #include #endif #ifdef ENCRYPTION #include #endif FILE *NetTrace = 0; /* Not in bss, since needs to stay */ int prettydump; /* * upcase() * * Upcase (in place) the argument. */ void upcase(char *argument) { int c; while ((c = *argument) != 0) { if (islower(c)) { *argument = toupper(c); } argument++; } } /* * SetSockOpt() * * Compensate for differences in 4.2 and 4.3 systems. */ int SetSockOpt(int fd, int level, int option, int yesno) { return setsockopt(fd, level, option, (char *)&yesno, sizeof yesno); } /* * The following are routines used to print out debugging information. */ unsigned char NetTraceFile[256] = "(standard output)"; void SetNetTrace(char *file) { if (NetTrace && NetTrace != stdout) fclose(NetTrace); if (file && (strcmp(file, "-") != 0)) { NetTrace = fopen(file, "w"); if (NetTrace) { strcpy((char *)NetTraceFile, file); return; } fprintf(stderr, "Cannot open %s.\n", file); } NetTrace = stdout; strcpy((char *)NetTraceFile, "(standard output)"); } void Dump(char direction, unsigned char *buffer, int length) { # define BYTES_PER_LINE 32 # define min(x,y) ((x= 3) { int j; i = pointer[length-2]; j = pointer[length-1]; if (i != IAC || j != SE) { fprintf(NetTrace, "(terminated by "); if (TELOPT_OK(i)) fprintf(NetTrace, "%s ", TELOPT(i)); else if (TELCMD_OK(i)) fprintf(NetTrace, "%s ", TELCMD(i)); else fprintf(NetTrace, "%d ", i); if (TELOPT_OK(j)) fprintf(NetTrace, "%s", TELOPT(j)); else if (TELCMD_OK(j)) fprintf(NetTrace, "%s", TELCMD(j)); else fprintf(NetTrace, "%d", j); fprintf(NetTrace, ", not IAC SE!) "); } } length -= 2; } if (length < 1) { fprintf(NetTrace, "(Empty suboption??\?)"); if (NetTrace == stdout) fflush(NetTrace); return; } switch (pointer[0]) { case TELOPT_TTYPE: fprintf(NetTrace, "TERMINAL-TYPE "); switch (pointer[1]) { case TELQUAL_IS: fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); break; case TELQUAL_SEND: fprintf(NetTrace, "SEND"); break; default: fprintf(NetTrace, "- unknown qualifier %d (0x%x).", pointer[1], pointer[1]); } break; case TELOPT_TSPEED: fprintf(NetTrace, "TERMINAL-SPEED"); if (length < 2) { fprintf(NetTrace, " (empty suboption??\?)"); break; } switch (pointer[1]) { case TELQUAL_IS: fprintf(NetTrace, " IS "); fprintf(NetTrace, "%.*s", length-2, (char *)pointer+2); break; default: if (pointer[1] == 1) fprintf(NetTrace, " SEND"); else fprintf(NetTrace, " %d (unknown)", pointer[1]); for (i = 2; i < length; i++) fprintf(NetTrace, " ?%d?", pointer[i]); break; } break; case TELOPT_LFLOW: fprintf(NetTrace, "TOGGLE-FLOW-CONTROL"); if (length < 2) { fprintf(NetTrace, " (empty suboption??\?)"); break; } switch (pointer[1]) { case LFLOW_OFF: fprintf(NetTrace, " OFF"); break; case LFLOW_ON: fprintf(NetTrace, " ON"); break; case LFLOW_RESTART_ANY: fprintf(NetTrace, " RESTART-ANY"); break; case LFLOW_RESTART_XON: fprintf(NetTrace, " RESTART-XON"); break; default: fprintf(NetTrace, " %d (unknown)", pointer[1]); } for (i = 2; i < length; i++) fprintf(NetTrace, " ?%d?", pointer[i]); break; case TELOPT_NAWS: fprintf(NetTrace, "NAWS"); if (length < 2) { fprintf(NetTrace, " (empty suboption??\?)"); break; } if (length == 2) { fprintf(NetTrace, " ?%d?", pointer[1]); break; } fprintf(NetTrace, " %d %d (%d)", pointer[1], pointer[2], (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2]))); if (length == 4) { fprintf(NetTrace, " ?%d?", pointer[3]); break; } fprintf(NetTrace, " %d %d (%d)", pointer[3], pointer[4], (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4]))); for (i = 5; i < length; i++) fprintf(NetTrace, " ?%d?", pointer[i]); break; #ifdef AUTHENTICATION case TELOPT_AUTHENTICATION: fprintf(NetTrace, "AUTHENTICATION"); if (length < 2) { fprintf(NetTrace, " (empty suboption??\?)"); break; } switch (pointer[1]) { case TELQUAL_REPLY: case TELQUAL_IS: fprintf(NetTrace, " %s ", (pointer[1] == TELQUAL_IS) ? "IS" : "REPLY"); if (AUTHTYPE_NAME_OK(pointer[2])) fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[2])); else fprintf(NetTrace, "%d ", pointer[2]); if (length < 3) { fprintf(NetTrace, "(partial suboption??\?)"); break; } fprintf(NetTrace, "%s|%s", ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? "CLIENT" : "SERVER", ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? "MUTUAL" : "ONE-WAY"); auth_printsub(&pointer[1], length - 1, buf, sizeof(buf)); fprintf(NetTrace, "%s", buf); break; case TELQUAL_SEND: i = 2; fprintf(NetTrace, " SEND "); while (i < length) { if (AUTHTYPE_NAME_OK(pointer[i])) fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[i])); else fprintf(NetTrace, "%d ", pointer[i]); if (++i >= length) { fprintf(NetTrace, "(partial suboption??\?)"); break; } fprintf(NetTrace, "%s|%s ", ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? "CLIENT" : "SERVER", ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? "MUTUAL" : "ONE-WAY"); ++i; } break; case TELQUAL_NAME: i = 2; fprintf(NetTrace, " NAME \""); while (i < length) putc(pointer[i++], NetTrace); putc('"', NetTrace); break; default: for (i = 2; i < length; i++) fprintf(NetTrace, " ?%d?", pointer[i]); break; } break; #endif #ifdef ENCRYPTION case TELOPT_ENCRYPT: fprintf(NetTrace, "ENCRYPT"); if (length < 2) { fprintf(NetTrace, " (empty suboption??\?)"); break; } switch (pointer[1]) { case ENCRYPT_START: fprintf(NetTrace, " START"); break; case ENCRYPT_END: fprintf(NetTrace, " END"); break; case ENCRYPT_REQSTART: fprintf(NetTrace, " REQUEST-START"); break; case ENCRYPT_REQEND: fprintf(NetTrace, " REQUEST-END"); break; case ENCRYPT_IS: case ENCRYPT_REPLY: fprintf(NetTrace, " %s ", (pointer[1] == ENCRYPT_IS) ? "IS" : "REPLY"); if (length < 3) { fprintf(NetTrace, " (partial suboption??\?)"); break; } if (ENCTYPE_NAME_OK(pointer[2])) fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[2])); else fprintf(NetTrace, " %d (unknown)", pointer[2]); encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf)); fprintf(NetTrace, "%s", buf); break; case ENCRYPT_SUPPORT: i = 2; fprintf(NetTrace, " SUPPORT "); while (i < length) { if (ENCTYPE_NAME_OK(pointer[i])) fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[i])); else fprintf(NetTrace, "%d ", pointer[i]); i++; } break; case ENCRYPT_ENC_KEYID: fprintf(NetTrace, " ENC_KEYID "); goto encommon; case ENCRYPT_DEC_KEYID: fprintf(NetTrace, " DEC_KEYID "); goto encommon; default: fprintf(NetTrace, " %d (unknown)", pointer[1]); encommon: for (i = 2; i < length; i++) fprintf(NetTrace, " %d", pointer[i]); break; } break; #endif /* ENCRYPTION */ case TELOPT_LINEMODE: fprintf(NetTrace, "LINEMODE "); if (length < 2) { fprintf(NetTrace, " (empty suboption??\?)"); break; } switch (pointer[1]) { case WILL: fprintf(NetTrace, "WILL "); goto common; case WONT: fprintf(NetTrace, "WONT "); goto common; case DO: fprintf(NetTrace, "DO "); goto common; case DONT: fprintf(NetTrace, "DONT "); common: if (length < 3) { fprintf(NetTrace, "(no option??\?)"); break; } switch (pointer[2]) { case LM_FORWARDMASK: fprintf(NetTrace, "Forward Mask"); for (i = 3; i < length; i++) fprintf(NetTrace, " %x", pointer[i]); break; default: fprintf(NetTrace, "%d (unknown)", pointer[2]); for (i = 3; i < length; i++) fprintf(NetTrace, " %d", pointer[i]); break; } break; case LM_SLC: fprintf(NetTrace, "SLC"); for (i = 2; i < length - 2; i += 3) { if (SLC_NAME_OK(pointer[i+SLC_FUNC])) fprintf(NetTrace, " %s", SLC_NAME(pointer[i+SLC_FUNC])); else fprintf(NetTrace, " %d", pointer[i+SLC_FUNC]); switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) { case SLC_NOSUPPORT: fprintf(NetTrace, " NOSUPPORT"); break; case SLC_CANTCHANGE: fprintf(NetTrace, " CANTCHANGE"); break; case SLC_VARIABLE: fprintf(NetTrace, " VARIABLE"); break; case SLC_DEFAULT: fprintf(NetTrace, " DEFAULT"); break; } fprintf(NetTrace, "%s%s%s", pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "", pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "", pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : ""); if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN| SLC_FLUSHOUT| SLC_LEVELBITS)) fprintf(NetTrace, "(0x%x)", pointer[i+SLC_FLAGS]); fprintf(NetTrace, " %d;", pointer[i+SLC_VALUE]); if ((pointer[i+SLC_VALUE] == IAC) && (pointer[i+SLC_VALUE+1] == IAC)) i++; } for (; i < length; i++) fprintf(NetTrace, " ?%d?", pointer[i]); break; case LM_MODE: fprintf(NetTrace, "MODE "); if (length < 3) { fprintf(NetTrace, "(no mode??\?)"); break; } { char tbuf[64]; - sprintf(tbuf, "%s%s%s%s%s", + snprintf(tbuf, sizeof(tbuf), "%s%s%s%s%s", pointer[2]&MODE_EDIT ? "|EDIT" : "", pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "", pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "", pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "", pointer[2]&MODE_ACK ? "|ACK" : ""); fprintf(NetTrace, "%s", tbuf[1] ? &tbuf[1] : "0"); } if (pointer[2]&~(MODE_MASK)) fprintf(NetTrace, " (0x%x)", pointer[2]); for (i = 3; i < length; i++) fprintf(NetTrace, " ?0x%x?", pointer[i]); break; default: fprintf(NetTrace, "%d (unknown)", pointer[1]); for (i = 2; i < length; i++) fprintf(NetTrace, " %d", pointer[i]); } break; case TELOPT_STATUS: { const char *cp; int j, k; fprintf(NetTrace, "STATUS"); switch (pointer[1]) { default: if (pointer[1] == TELQUAL_SEND) fprintf(NetTrace, " SEND"); else fprintf(NetTrace, " %d (unknown)", pointer[1]); for (i = 2; i < length; i++) fprintf(NetTrace, " ?%d?", pointer[i]); break; case TELQUAL_IS: if (--want_status_response < 0) want_status_response = 0; if (NetTrace == stdout) fprintf(NetTrace, " IS\r\n"); else fprintf(NetTrace, " IS\n"); for (i = 2; i < length; i++) { switch(pointer[i]) { case DO: cp = "DO"; goto common2; case DONT: cp = "DONT"; goto common2; case WILL: cp = "WILL"; goto common2; case WONT: cp = "WONT"; goto common2; common2: i++; if (TELOPT_OK((int)pointer[i])) fprintf(NetTrace, " %s %s", cp, TELOPT(pointer[i])); else fprintf(NetTrace, " %s %d", cp, pointer[i]); if (NetTrace == stdout) fprintf(NetTrace, "\r\n"); else fprintf(NetTrace, "\n"); break; case SB: fprintf(NetTrace, " SB "); i++; j = k = i; while (j < length) { if (pointer[j] == SE) { if (j+1 == length) break; if (pointer[j+1] == SE) j++; else break; } pointer[k++] = pointer[j++]; } printsub(0, &pointer[i], k - i); if (i < length) { fprintf(NetTrace, " SE"); i = j; } else i = j - 1; if (NetTrace == stdout) fprintf(NetTrace, "\r\n"); else fprintf(NetTrace, "\n"); break; default: fprintf(NetTrace, " %d", pointer[i]); break; } } break; } break; } case TELOPT_XDISPLOC: fprintf(NetTrace, "X-DISPLAY-LOCATION "); switch (pointer[1]) { case TELQUAL_IS: fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); break; case TELQUAL_SEND: fprintf(NetTrace, "SEND"); break; default: fprintf(NetTrace, "- unknown qualifier %d (0x%x).", pointer[1], pointer[1]); } break; case TELOPT_NEW_ENVIRON: fprintf(NetTrace, "NEW-ENVIRON "); #ifdef OLD_ENVIRON goto env_common1; case TELOPT_OLD_ENVIRON: fprintf(NetTrace, "OLD-ENVIRON"); env_common1: #endif switch (pointer[1]) { case TELQUAL_IS: fprintf(NetTrace, "IS "); goto env_common; case TELQUAL_SEND: fprintf(NetTrace, "SEND "); goto env_common; case TELQUAL_INFO: fprintf(NetTrace, "INFO "); env_common: { int noquote = 2; #if defined(ENV_HACK) && defined(OLD_ENVIRON) extern int old_env_var, old_env_value; #endif for (i = 2; i < length; i++ ) { switch (pointer[i]) { case NEW_ENV_VALUE: #ifdef OLD_ENVIRON /* case NEW_ENV_OVAR: */ if (pointer[0] == TELOPT_OLD_ENVIRON) { # ifdef ENV_HACK if (old_env_var == OLD_ENV_VALUE) fprintf(NetTrace, "\" (VALUE) " + noquote); else # endif fprintf(NetTrace, "\" VAR " + noquote); } else #endif /* OLD_ENVIRON */ fprintf(NetTrace, "%s", "\" VALUE " + noquote); noquote = 2; break; case NEW_ENV_VAR: #ifdef OLD_ENVIRON /* case OLD_ENV_VALUE: */ if (pointer[0] == TELOPT_OLD_ENVIRON) { # ifdef ENV_HACK if (old_env_value == OLD_ENV_VAR) fprintf(NetTrace, "\" (VAR) " + noquote); else # endif fprintf(NetTrace, "\" VALUE " + noquote); } else #endif /* OLD_ENVIRON */ fprintf(NetTrace, "%s", "\" VAR " + noquote); noquote = 2; break; case ENV_ESC: fprintf(NetTrace, "%s", "\" ESC " + noquote); noquote = 2; break; case ENV_USERVAR: fprintf(NetTrace, "%s", "\" USERVAR " + noquote); noquote = 2; break; default: if (isprint(pointer[i]) && pointer[i] != '"') { if (noquote) { putc('"', NetTrace); noquote = 0; } putc(pointer[i], NetTrace); } else { fprintf(NetTrace, "\" %03o " + noquote, pointer[i]); noquote = 2; } break; } } if (!noquote) putc('"', NetTrace); break; } } break; default: if (TELOPT_OK(pointer[0])) fprintf(NetTrace, "%s (unknown)", TELOPT(pointer[0])); else fprintf(NetTrace, "%d (unknown)", pointer[0]); for (i = 1; i < length; i++) fprintf(NetTrace, " %d", pointer[i]); break; } if (direction) { if (NetTrace == stdout) fprintf(NetTrace, "\r\n"); else fprintf(NetTrace, "\n"); } if (NetTrace == stdout) fflush(NetTrace); } } /* EmptyTerminal - called to make sure that the terminal buffer is empty. * Note that we consider the buffer to run all the * way to the kernel (thus the select). */ static void EmptyTerminal(void) { fd_set o; FD_ZERO(&o); if (TTYBYTES() == 0) { FD_SET(tout, &o); (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0, (struct timeval *) 0); /* wait for TTLOWAT */ } else { while (TTYBYTES()) { (void) ttyflush(0); FD_SET(tout, &o); (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0, (struct timeval *) 0); /* wait for TTLOWAT */ } } } static void SetForExit(void) { setconnmode(0); do { (void)telrcv(); /* Process any incoming data */ EmptyTerminal(); } while (ring_full_count(&netiring)); /* While there is any */ setcommandmode(); fflush(stdout); fflush(stderr); setconnmode(0); EmptyTerminal(); /* Flush the path to the tty */ setcommandmode(); } void Exit(int returnCode) { SetForExit(); exit(returnCode); } void ExitString(const char *string, int returnCode) { SetForExit(); fwrite(string, 1, strlen(string), stderr); exit(returnCode); } Index: stable/11 =================================================================== --- stable/11 (revision 350139) +++ stable/11 (revision 350140) Property changes on: stable/11 ___________________________________________________________________ Modified: svn:mergeinfo ## -0,0 +0,1 ## Merged /head:r349890,349896