commands.c revision 90926
157416Smarkm/* 257416Smarkm * Copyright (c) 1988, 1990, 1993 357416Smarkm * The Regents of the University of California. All rights reserved. 457416Smarkm * 557416Smarkm * Redistribution and use in source and binary forms, with or without 657416Smarkm * modification, are permitted provided that the following conditions 757416Smarkm * are met: 857416Smarkm * 1. Redistributions of source code must retain the above copyright 957416Smarkm * notice, this list of conditions and the following disclaimer. 1057416Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1157416Smarkm * notice, this list of conditions and the following disclaimer in the 1257416Smarkm * documentation and/or other materials provided with the distribution. 1357416Smarkm * 3. All advertising materials mentioning features or use of this software 1457416Smarkm * must display the following acknowledgement: 1557416Smarkm * This product includes software developed by the University of 1657416Smarkm * California, Berkeley and its contributors. 1757416Smarkm * 4. Neither the name of the University nor the names of its contributors 1857416Smarkm * may be used to endorse or promote products derived from this software 1957416Smarkm * without specific prior written permission. 2057416Smarkm * 2157416Smarkm * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2257416Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2357416Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2457416Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2557416Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2657416Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2757416Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2857416Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2957416Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3057416Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3157416Smarkm * SUCH DAMAGE. 3257416Smarkm */ 3357416Smarkm 3457416Smarkm#include "telnet_locl.h" 3557416Smarkm 3690926SnectarRCSID("$Id: commands.c,v 1.67 2001/08/29 00:45:20 assar Exp $"); 3757416Smarkm 3857416Smarkm#if defined(IPPROTO_IP) && defined(IP_TOS) 3957416Smarkmint tos = -1; 4057416Smarkm#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 4157416Smarkm 4257416Smarkmchar *hostname; 4357416Smarkmstatic char _hostname[MaxHostNameLen]; 4457416Smarkm 4557416Smarkmtypedef int (*intrtn_t)(int, char**); 4657416Smarkmstatic int call(intrtn_t, ...); 4757416Smarkm 4857416Smarkmtypedef struct { 4957416Smarkm char *name; /* command name */ 5057416Smarkm char *help; /* help string (NULL for no help) */ 5157416Smarkm int (*handler)(); /* routine which executes command */ 5257416Smarkm int needconnect; /* Do we need to be connected to execute? */ 5357416Smarkm} Command; 5457416Smarkm 5557416Smarkmstatic char line[256]; 5657416Smarkmstatic char saveline[256]; 5757416Smarkmstatic int margc; 5857416Smarkmstatic char *margv[20]; 5957416Smarkm 6057416Smarkmstatic void 6157416Smarkmmakeargv() 6257416Smarkm{ 6357416Smarkm char *cp, *cp2, c; 6457416Smarkm char **argp = margv; 6557416Smarkm 6657416Smarkm margc = 0; 6757416Smarkm cp = line; 6857416Smarkm if (*cp == '!') { /* Special case shell escape */ 6957416Smarkm /* save for shell command */ 7057416Smarkm strlcpy(saveline, line, sizeof(saveline)); 7157416Smarkm *argp++ = "!"; /* No room in string to get this */ 7257416Smarkm margc++; 7357416Smarkm cp++; 7457416Smarkm } 7557416Smarkm while ((c = *cp)) { 7657416Smarkm int inquote = 0; 7757416Smarkm while (isspace(c)) 7857416Smarkm c = *++cp; 7957416Smarkm if (c == '\0') 8057416Smarkm break; 8157416Smarkm *argp++ = cp; 8257416Smarkm margc += 1; 8357416Smarkm for (cp2 = cp; c != '\0'; c = *++cp) { 8457416Smarkm if (inquote) { 8557416Smarkm if (c == inquote) { 8657416Smarkm inquote = 0; 8757416Smarkm continue; 8857416Smarkm } 8957416Smarkm } else { 9057416Smarkm if (c == '\\') { 9157416Smarkm if ((c = *++cp) == '\0') 9257416Smarkm break; 9357416Smarkm } else if (c == '"') { 9457416Smarkm inquote = '"'; 9557416Smarkm continue; 9657416Smarkm } else if (c == '\'') { 9757416Smarkm inquote = '\''; 9857416Smarkm continue; 9957416Smarkm } else if (isspace(c)) 10057416Smarkm break; 10157416Smarkm } 10257416Smarkm *cp2++ = c; 10357416Smarkm } 10457416Smarkm *cp2 = '\0'; 10557416Smarkm if (c == '\0') 10657416Smarkm break; 10757416Smarkm cp++; 10857416Smarkm } 10957416Smarkm *argp++ = 0; 11057416Smarkm} 11157416Smarkm 11257416Smarkm/* 11357416Smarkm * Make a character string into a number. 11457416Smarkm * 11557416Smarkm * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). 11657416Smarkm */ 11757416Smarkm 11857416Smarkmstatic char 11957416Smarkmspecial(char *s) 12057416Smarkm{ 12157416Smarkm char c; 12257416Smarkm char b; 12357416Smarkm 12457416Smarkm switch (*s) { 12557416Smarkm case '^': 12657416Smarkm b = *++s; 12757416Smarkm if (b == '?') { 12857416Smarkm c = b | 0x40; /* DEL */ 12957416Smarkm } else { 13057416Smarkm c = b & 0x1f; 13157416Smarkm } 13257416Smarkm break; 13357416Smarkm default: 13457416Smarkm c = *s; 13557416Smarkm break; 13657416Smarkm } 13757416Smarkm return c; 13857416Smarkm} 13957416Smarkm 14057416Smarkm/* 14157416Smarkm * Construct a control character sequence 14257416Smarkm * for a special character. 14357416Smarkm */ 14457416Smarkmstatic char * 14557416Smarkmcontrol(cc_t c) 14657416Smarkm{ 14757416Smarkm static char buf[5]; 14857416Smarkm /* 14957416Smarkm * The only way I could get the Sun 3.5 compiler 15057416Smarkm * to shut up about 15157416Smarkm * if ((unsigned int)c >= 0x80) 15257416Smarkm * was to assign "c" to an unsigned int variable... 15357416Smarkm * Arggg.... 15457416Smarkm */ 15557416Smarkm unsigned int uic = (unsigned int)c; 15657416Smarkm 15757416Smarkm if (uic == 0x7f) 15857416Smarkm return ("^?"); 15957416Smarkm if (c == (cc_t)_POSIX_VDISABLE) { 16057416Smarkm return "off"; 16157416Smarkm } 16257416Smarkm if (uic >= 0x80) { 16357416Smarkm buf[0] = '\\'; 16457416Smarkm buf[1] = ((c>>6)&07) + '0'; 16557416Smarkm buf[2] = ((c>>3)&07) + '0'; 16657416Smarkm buf[3] = (c&07) + '0'; 16757416Smarkm buf[4] = 0; 16857416Smarkm } else if (uic >= 0x20) { 16957416Smarkm buf[0] = c; 17057416Smarkm buf[1] = 0; 17157416Smarkm } else { 17257416Smarkm buf[0] = '^'; 17357416Smarkm buf[1] = '@'+c; 17457416Smarkm buf[2] = 0; 17557416Smarkm } 17657416Smarkm return (buf); 17757416Smarkm} 17857416Smarkm 17957416Smarkm 18057416Smarkm 18157416Smarkm/* 18257416Smarkm * The following are data structures and routines for 18357416Smarkm * the "send" command. 18457416Smarkm * 18557416Smarkm */ 18657416Smarkm 18757416Smarkmstruct sendlist { 18857416Smarkm char *name; /* How user refers to it (case independent) */ 18957416Smarkm char *help; /* Help information (0 ==> no help) */ 19057416Smarkm int needconnect; /* Need to be connected */ 19157416Smarkm int narg; /* Number of arguments */ 19257416Smarkm int (*handler)(); /* Routine to perform (for special ops) */ 19357416Smarkm int nbyte; /* Number of bytes to send this command */ 19457416Smarkm int what; /* Character to be sent (<0 ==> special) */ 19557416Smarkm}; 19657416Smarkm 19757416Smarkm 19857416Smarkmstatic int 19957416Smarkm send_esc (void), 20057416Smarkm send_help (void), 20157416Smarkm send_docmd (char *), 20257416Smarkm send_dontcmd (char *), 20357416Smarkm send_willcmd (char *), 20457416Smarkm send_wontcmd (char *); 20557416Smarkm 20657416Smarkmstatic struct sendlist Sendlist[] = { 20757416Smarkm { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO }, 20857416Smarkm { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT }, 20957416Smarkm { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK }, 21057416Smarkm { "break", 0, 1, 0, 0, 2, BREAK }, 21157416Smarkm { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC }, 21257416Smarkm { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL }, 21357416Smarkm { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 }, 21457416Smarkm { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA }, 21557416Smarkm { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP }, 21657416Smarkm { "intp", 0, 1, 0, 0, 2, IP }, 21757416Smarkm { "interrupt", 0, 1, 0, 0, 2, IP }, 21857416Smarkm { "intr", 0, 1, 0, 0, 2, IP }, 21957416Smarkm { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP }, 22057416Smarkm { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR }, 22157416Smarkm { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT }, 22257416Smarkm { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP }, 22357416Smarkm { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF }, 22457416Smarkm { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 }, 22557416Smarkm { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 }, 22657416Smarkm { "?", "Display send options", 0, 0, send_help, 0, 0 }, 22757416Smarkm { "help", 0, 0, 0, send_help, 0, 0 }, 22857416Smarkm { "do", 0, 0, 1, send_docmd, 3, 0 }, 22957416Smarkm { "dont", 0, 0, 1, send_dontcmd, 3, 0 }, 23057416Smarkm { "will", 0, 0, 1, send_willcmd, 3, 0 }, 23157416Smarkm { "wont", 0, 0, 1, send_wontcmd, 3, 0 }, 23257416Smarkm { 0 } 23357416Smarkm}; 23457416Smarkm 23557416Smarkm#define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \ 23657416Smarkm sizeof(struct sendlist))) 23757416Smarkm 23857416Smarkmstatic int 23957416Smarkmsendcmd(int argc, char **argv) 24057416Smarkm{ 24157416Smarkm int count; /* how many bytes we are going to need to send */ 24257416Smarkm int i; 24357416Smarkm struct sendlist *s; /* pointer to current command */ 24457416Smarkm int success = 0; 24557416Smarkm int needconnect = 0; 24657416Smarkm 24757416Smarkm if (argc < 2) { 24857416Smarkm printf("need at least one argument for 'send' command\r\n"); 24957416Smarkm printf("'send ?' for help\r\n"); 25057416Smarkm return 0; 25157416Smarkm } 25257416Smarkm /* 25357416Smarkm * First, validate all the send arguments. 25457416Smarkm * In addition, we see how much space we are going to need, and 25557416Smarkm * whether or not we will be doing a "SYNCH" operation (which 25657416Smarkm * flushes the network queue). 25757416Smarkm */ 25857416Smarkm count = 0; 25957416Smarkm for (i = 1; i < argc; i++) { 26057416Smarkm s = GETSEND(argv[i]); 26157416Smarkm if (s == 0) { 26257416Smarkm printf("Unknown send argument '%s'\r\n'send ?' for help.\r\n", 26357416Smarkm argv[i]); 26457416Smarkm return 0; 26557416Smarkm } else if (Ambiguous(s)) { 26657416Smarkm printf("Ambiguous send argument '%s'\r\n'send ?' for help.\r\n", 26757416Smarkm argv[i]); 26857416Smarkm return 0; 26957416Smarkm } 27057416Smarkm if (i + s->narg >= argc) { 27157416Smarkm fprintf(stderr, 27257416Smarkm "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\r\n", 27357416Smarkm s->narg, s->narg == 1 ? "" : "s", s->name, s->name); 27457416Smarkm return 0; 27557416Smarkm } 27657416Smarkm count += s->nbyte; 27757416Smarkm if (s->handler == send_help) { 27857416Smarkm send_help(); 27957416Smarkm return 0; 28057416Smarkm } 28157416Smarkm 28257416Smarkm i += s->narg; 28357416Smarkm needconnect += s->needconnect; 28457416Smarkm } 28557416Smarkm if (!connected && needconnect) { 28657416Smarkm printf("?Need to be connected first.\r\n"); 28757416Smarkm printf("'send ?' for help\r\n"); 28857416Smarkm return 0; 28957416Smarkm } 29057416Smarkm /* Now, do we have enough room? */ 29157416Smarkm if (NETROOM() < count) { 29257416Smarkm printf("There is not enough room in the buffer TO the network\r\n"); 29357416Smarkm printf("to process your request. Nothing will be done.\r\n"); 29457416Smarkm printf("('send synch' will throw away most data in the network\r\n"); 29557416Smarkm printf("buffer, if this might help.)\r\n"); 29657416Smarkm return 0; 29757416Smarkm } 29857416Smarkm /* OK, they are all OK, now go through again and actually send */ 29957416Smarkm count = 0; 30057416Smarkm for (i = 1; i < argc; i++) { 30157416Smarkm if ((s = GETSEND(argv[i])) == 0) { 30257416Smarkm fprintf(stderr, "Telnet 'send' error - argument disappeared!\r\n"); 30357416Smarkm quit(); 30457416Smarkm /*NOTREACHED*/ 30557416Smarkm } 30657416Smarkm if (s->handler) { 30757416Smarkm count++; 30857416Smarkm success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0, 30957416Smarkm (s->narg > 1) ? argv[i+2] : 0); 31057416Smarkm i += s->narg; 31157416Smarkm } else { 31257416Smarkm NET2ADD(IAC, s->what); 31357416Smarkm printoption("SENT", IAC, s->what); 31457416Smarkm } 31557416Smarkm } 31657416Smarkm return (count == success); 31757416Smarkm} 31857416Smarkm 31957416Smarkmstatic int 32057416Smarkmsend_tncmd(void (*func)(), char *cmd, char *name); 32157416Smarkm 32257416Smarkmstatic int 32357416Smarkmsend_esc() 32457416Smarkm{ 32557416Smarkm NETADD(escape); 32657416Smarkm return 1; 32757416Smarkm} 32857416Smarkm 32957416Smarkmstatic int 33057416Smarkmsend_docmd(char *name) 33157416Smarkm{ 33257416Smarkm return(send_tncmd(send_do, "do", name)); 33357416Smarkm} 33457416Smarkm 33557416Smarkmstatic int 33657416Smarkmsend_dontcmd(char *name) 33757416Smarkm{ 33857416Smarkm return(send_tncmd(send_dont, "dont", name)); 33957416Smarkm} 34057416Smarkm 34157416Smarkmstatic int 34257416Smarkmsend_willcmd(char *name) 34357416Smarkm{ 34457416Smarkm return(send_tncmd(send_will, "will", name)); 34557416Smarkm} 34657416Smarkm 34757416Smarkmstatic int 34857416Smarkmsend_wontcmd(char *name) 34957416Smarkm{ 35057416Smarkm return(send_tncmd(send_wont, "wont", name)); 35157416Smarkm} 35257416Smarkm 35390926Snectarextern char *telopts[]; /* XXX */ 35490926Snectar 35557416Smarkmstatic int 35657416Smarkmsend_tncmd(void (*func)(), char *cmd, char *name) 35757416Smarkm{ 35857416Smarkm char **cpp; 35957416Smarkm int val = 0; 36057416Smarkm 36157416Smarkm if (isprefix(name, "help") || isprefix(name, "?")) { 36257416Smarkm int col, len; 36357416Smarkm 36457416Smarkm printf("Usage: send %s <value|option>\r\n", cmd); 36557416Smarkm printf("\"value\" must be from 0 to 255\r\n"); 36657416Smarkm printf("Valid options are:\r\n\t"); 36757416Smarkm 36857416Smarkm col = 8; 36957416Smarkm for (cpp = telopts; *cpp; cpp++) { 37057416Smarkm len = strlen(*cpp) + 3; 37157416Smarkm if (col + len > 65) { 37257416Smarkm printf("\r\n\t"); 37357416Smarkm col = 8; 37457416Smarkm } 37557416Smarkm printf(" \"%s\"", *cpp); 37657416Smarkm col += len; 37757416Smarkm } 37857416Smarkm printf("\r\n"); 37957416Smarkm return 0; 38057416Smarkm } 38157416Smarkm cpp = genget(name, telopts, sizeof(char *)); 38257416Smarkm if (Ambiguous(cpp)) { 38357416Smarkm fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\r\n", 38457416Smarkm name, cmd); 38557416Smarkm return 0; 38657416Smarkm } 38757416Smarkm if (cpp) { 38857416Smarkm val = cpp - telopts; 38957416Smarkm } else { 39057416Smarkm char *cp = name; 39157416Smarkm 39257416Smarkm while (*cp >= '0' && *cp <= '9') { 39357416Smarkm val *= 10; 39457416Smarkm val += *cp - '0'; 39557416Smarkm cp++; 39657416Smarkm } 39757416Smarkm if (*cp != 0) { 39857416Smarkm fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\r\n", 39957416Smarkm name, cmd); 40057416Smarkm return 0; 40157416Smarkm } else if (val < 0 || val > 255) { 40257416Smarkm fprintf(stderr, "'%s': bad value ('send %s ?' for help).\r\n", 40357416Smarkm name, cmd); 40457416Smarkm return 0; 40557416Smarkm } 40657416Smarkm } 40757416Smarkm if (!connected) { 40857416Smarkm printf("?Need to be connected first.\r\n"); 40957416Smarkm return 0; 41057416Smarkm } 41157416Smarkm (*func)(val, 1); 41257416Smarkm return 1; 41357416Smarkm} 41457416Smarkm 41557416Smarkmstatic int 41657416Smarkmsend_help() 41757416Smarkm{ 41857416Smarkm struct sendlist *s; /* pointer to current command */ 41957416Smarkm for (s = Sendlist; s->name; s++) { 42057416Smarkm if (s->help) 42157416Smarkm printf("%-15s %s\r\n", s->name, s->help); 42257416Smarkm } 42357416Smarkm return(0); 42457416Smarkm} 42557416Smarkm 42657416Smarkm/* 42757416Smarkm * The following are the routines and data structures referred 42857416Smarkm * to by the arguments to the "toggle" command. 42957416Smarkm */ 43057416Smarkm 43157416Smarkmstatic int 43257416Smarkmlclchars() 43357416Smarkm{ 43457416Smarkm donelclchars = 1; 43557416Smarkm return 1; 43657416Smarkm} 43757416Smarkm 43857416Smarkmstatic int 43957416Smarkmtogdebug() 44057416Smarkm{ 44157416Smarkm#ifndef NOT43 44257416Smarkm if (net > 0 && 44357416Smarkm (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) { 44457416Smarkm perror("setsockopt (SO_DEBUG)"); 44557416Smarkm } 44657416Smarkm#else /* NOT43 */ 44757416Smarkm if (debug) { 44857416Smarkm if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0) 44957416Smarkm perror("setsockopt (SO_DEBUG)"); 45057416Smarkm } else 45157416Smarkm printf("Cannot turn off socket debugging\r\n"); 45257416Smarkm#endif /* NOT43 */ 45357416Smarkm return 1; 45457416Smarkm} 45557416Smarkm 45657416Smarkm#if defined(KRB4) && defined(HAVE_KRB_DISABLE_DEBUG) 45757416Smarkm#include <krb.h> 45857416Smarkm 45957416Smarkmstatic int 46057416Smarkmtogkrbdebug(void) 46157416Smarkm{ 46257416Smarkm if(krb_debug) 46357416Smarkm krb_enable_debug(); 46457416Smarkm else 46557416Smarkm krb_disable_debug(); 46657416Smarkm return 1; 46757416Smarkm} 46857416Smarkm#endif 46957416Smarkm 47057416Smarkmstatic int 47157416Smarkmtogcrlf() 47257416Smarkm{ 47357416Smarkm if (crlf) { 47457416Smarkm printf("Will send carriage returns as telnet <CR><LF>.\r\n"); 47557416Smarkm } else { 47657416Smarkm printf("Will send carriage returns as telnet <CR><NUL>.\r\n"); 47757416Smarkm } 47857416Smarkm return 1; 47957416Smarkm} 48057416Smarkm 48157416Smarkmint binmode; 48257416Smarkm 48357416Smarkmstatic int 48457416Smarkmtogbinary(int val) 48557416Smarkm{ 48657416Smarkm donebinarytoggle = 1; 48757416Smarkm 48857416Smarkm if (val >= 0) { 48957416Smarkm binmode = val; 49057416Smarkm } else { 49157416Smarkm if (my_want_state_is_will(TELOPT_BINARY) && 49257416Smarkm my_want_state_is_do(TELOPT_BINARY)) { 49357416Smarkm binmode = 1; 49457416Smarkm } else if (my_want_state_is_wont(TELOPT_BINARY) && 49557416Smarkm my_want_state_is_dont(TELOPT_BINARY)) { 49657416Smarkm binmode = 0; 49757416Smarkm } 49857416Smarkm val = binmode ? 0 : 1; 49957416Smarkm } 50057416Smarkm 50157416Smarkm if (val == 1) { 50257416Smarkm if (my_want_state_is_will(TELOPT_BINARY) && 50357416Smarkm my_want_state_is_do(TELOPT_BINARY)) { 50457416Smarkm printf("Already operating in binary mode with remote host.\r\n"); 50557416Smarkm } else { 50657416Smarkm printf("Negotiating binary mode with remote host.\r\n"); 50757416Smarkm tel_enter_binary(3); 50857416Smarkm } 50957416Smarkm } else { 51057416Smarkm if (my_want_state_is_wont(TELOPT_BINARY) && 51157416Smarkm my_want_state_is_dont(TELOPT_BINARY)) { 51257416Smarkm printf("Already in network ascii mode with remote host.\r\n"); 51357416Smarkm } else { 51457416Smarkm printf("Negotiating network ascii mode with remote host.\r\n"); 51557416Smarkm tel_leave_binary(3); 51657416Smarkm } 51757416Smarkm } 51857416Smarkm return 1; 51957416Smarkm} 52057416Smarkm 52157416Smarkmstatic int 52257416Smarkmtogrbinary(int val) 52357416Smarkm{ 52457416Smarkm donebinarytoggle = 1; 52557416Smarkm 52657416Smarkm if (val == -1) 52757416Smarkm val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1; 52857416Smarkm 52957416Smarkm if (val == 1) { 53057416Smarkm if (my_want_state_is_do(TELOPT_BINARY)) { 53157416Smarkm printf("Already receiving in binary mode.\r\n"); 53257416Smarkm } else { 53357416Smarkm printf("Negotiating binary mode on input.\r\n"); 53457416Smarkm tel_enter_binary(1); 53557416Smarkm } 53657416Smarkm } else { 53757416Smarkm if (my_want_state_is_dont(TELOPT_BINARY)) { 53857416Smarkm printf("Already receiving in network ascii mode.\r\n"); 53957416Smarkm } else { 54057416Smarkm printf("Negotiating network ascii mode on input.\r\n"); 54157416Smarkm tel_leave_binary(1); 54257416Smarkm } 54357416Smarkm } 54457416Smarkm return 1; 54557416Smarkm} 54657416Smarkm 54757416Smarkmstatic int 54857416Smarkmtogxbinary(int val) 54957416Smarkm{ 55057416Smarkm donebinarytoggle = 1; 55157416Smarkm 55257416Smarkm if (val == -1) 55357416Smarkm val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1; 55457416Smarkm 55557416Smarkm if (val == 1) { 55657416Smarkm if (my_want_state_is_will(TELOPT_BINARY)) { 55757416Smarkm printf("Already transmitting in binary mode.\r\n"); 55857416Smarkm } else { 55957416Smarkm printf("Negotiating binary mode on output.\r\n"); 56057416Smarkm tel_enter_binary(2); 56157416Smarkm } 56257416Smarkm } else { 56357416Smarkm if (my_want_state_is_wont(TELOPT_BINARY)) { 56457416Smarkm printf("Already transmitting in network ascii mode.\r\n"); 56557416Smarkm } else { 56657416Smarkm printf("Negotiating network ascii mode on output.\r\n"); 56757416Smarkm tel_leave_binary(2); 56857416Smarkm } 56957416Smarkm } 57057416Smarkm return 1; 57157416Smarkm} 57257416Smarkm 57357416Smarkm 57457416Smarkmstatic int togglehelp (void); 57557416Smarkm#if defined(AUTHENTICATION) 57657416Smarkmextern int auth_togdebug (int); 57757416Smarkm#endif 57857416Smarkm#if defined(ENCRYPTION) 57957416Smarkmextern int EncryptAutoEnc (int); 58057416Smarkmextern int EncryptAutoDec (int); 58157416Smarkmextern int EncryptDebug (int); 58257416Smarkmextern int EncryptVerbose (int); 58357416Smarkm#endif 58457416Smarkm 58557416Smarkmstruct togglelist { 58657416Smarkm char *name; /* name of toggle */ 58757416Smarkm char *help; /* help message */ 58857416Smarkm int (*handler)(); /* routine to do actual setting */ 58957416Smarkm int *variable; 59057416Smarkm char *actionexplanation; 59157416Smarkm}; 59257416Smarkm 59357416Smarkmstatic struct togglelist Togglelist[] = { 59457416Smarkm { "autoflush", 59557416Smarkm "flushing of output when sending interrupt characters", 59657416Smarkm 0, 59757416Smarkm &autoflush, 59857416Smarkm "flush output when sending interrupt characters" }, 59957416Smarkm { "autosynch", 60057416Smarkm "automatic sending of interrupt characters in urgent mode", 60157416Smarkm 0, 60257416Smarkm &autosynch, 60357416Smarkm "send interrupt characters in urgent mode" }, 60457416Smarkm#if defined(AUTHENTICATION) 60557416Smarkm { "autologin", 60657416Smarkm "automatic sending of login and/or authentication info", 60757416Smarkm 0, 60857416Smarkm &autologin, 60957416Smarkm "send login name and/or authentication information" }, 61057416Smarkm { "authdebug", 61157416Smarkm "Toggle authentication debugging", 61257416Smarkm auth_togdebug, 61357416Smarkm 0, 61457416Smarkm "print authentication debugging information" }, 61557416Smarkm#endif 61657416Smarkm#if defined(ENCRYPTION) 61757416Smarkm { "autoencrypt", 61857416Smarkm "automatic encryption of data stream", 61957416Smarkm EncryptAutoEnc, 62057416Smarkm 0, 62157416Smarkm "automatically encrypt output" }, 62257416Smarkm { "autodecrypt", 62357416Smarkm "automatic decryption of data stream", 62457416Smarkm EncryptAutoDec, 62557416Smarkm 0, 62657416Smarkm "automatically decrypt input" }, 62757416Smarkm { "verbose_encrypt", 62857416Smarkm "Toggle verbose encryption output", 62957416Smarkm EncryptVerbose, 63057416Smarkm 0, 63157416Smarkm "print verbose encryption output" }, 63257416Smarkm { "encdebug", 63357416Smarkm "Toggle encryption debugging", 63457416Smarkm EncryptDebug, 63557416Smarkm 0, 63657416Smarkm "print encryption debugging information" }, 63757416Smarkm#endif 63857416Smarkm { "skiprc", 63957416Smarkm "don't read ~/.telnetrc file", 64057416Smarkm 0, 64157416Smarkm &skiprc, 64257416Smarkm "skip reading of ~/.telnetrc file" }, 64357416Smarkm { "binary", 64457416Smarkm "sending and receiving of binary data", 64557416Smarkm togbinary, 64657416Smarkm 0, 64757416Smarkm 0 }, 64857416Smarkm { "inbinary", 64957416Smarkm "receiving of binary data", 65057416Smarkm togrbinary, 65157416Smarkm 0, 65257416Smarkm 0 }, 65357416Smarkm { "outbinary", 65457416Smarkm "sending of binary data", 65557416Smarkm togxbinary, 65657416Smarkm 0, 65757416Smarkm 0 }, 65857416Smarkm { "crlf", 65957416Smarkm "sending carriage returns as telnet <CR><LF>", 66057416Smarkm togcrlf, 66157416Smarkm &crlf, 66257416Smarkm 0 }, 66357416Smarkm { "crmod", 66457416Smarkm "mapping of received carriage returns", 66557416Smarkm 0, 66657416Smarkm &crmod, 66757416Smarkm "map carriage return on output" }, 66857416Smarkm { "localchars", 66957416Smarkm "local recognition of certain control characters", 67057416Smarkm lclchars, 67157416Smarkm &localchars, 67257416Smarkm "recognize certain control characters" }, 67357416Smarkm { " ", "", 0 }, /* empty line */ 67457416Smarkm { "debug", 67557416Smarkm "debugging", 67657416Smarkm togdebug, 67757416Smarkm &debug, 67857416Smarkm "turn on socket level debugging" }, 67957416Smarkm#if defined(KRB4) && defined(HAVE_KRB_DISABLE_DEBUG) 68057416Smarkm { "krb_debug", 68157416Smarkm "kerberos 4 debugging", 68257416Smarkm togkrbdebug, 68357416Smarkm &krb_debug, 68457416Smarkm "turn on kerberos 4 debugging" }, 68557416Smarkm#endif 68657416Smarkm { "netdata", 68757416Smarkm "printing of hexadecimal network data (debugging)", 68857416Smarkm 0, 68957416Smarkm &netdata, 69057416Smarkm "print hexadecimal representation of network traffic" }, 69157416Smarkm { "prettydump", 69257416Smarkm "output of \"netdata\" to user readable format (debugging)", 69357416Smarkm 0, 69457416Smarkm &prettydump, 69557416Smarkm "print user readable output for \"netdata\"" }, 69657416Smarkm { "options", 69757416Smarkm "viewing of options processing (debugging)", 69857416Smarkm 0, 69957416Smarkm &showoptions, 70057416Smarkm "show option processing" }, 70157416Smarkm { "termdata", 70257416Smarkm "(debugging) toggle printing of hexadecimal terminal data", 70357416Smarkm 0, 70457416Smarkm &termdata, 70557416Smarkm "print hexadecimal representation of terminal traffic" }, 70657416Smarkm { "?", 70757416Smarkm 0, 70857416Smarkm togglehelp }, 70957416Smarkm { "help", 71057416Smarkm 0, 71157416Smarkm togglehelp }, 71257416Smarkm { 0 } 71357416Smarkm}; 71457416Smarkm 71557416Smarkmstatic int 71657416Smarkmtogglehelp() 71757416Smarkm{ 71857416Smarkm struct togglelist *c; 71957416Smarkm 72057416Smarkm for (c = Togglelist; c->name; c++) { 72157416Smarkm if (c->help) { 72257416Smarkm if (*c->help) 72357416Smarkm printf("%-15s toggle %s\r\n", c->name, c->help); 72457416Smarkm else 72557416Smarkm printf("\r\n"); 72657416Smarkm } 72757416Smarkm } 72857416Smarkm printf("\r\n"); 72957416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 73057416Smarkm return 0; 73157416Smarkm} 73257416Smarkm 73357416Smarkmstatic void 73457416Smarkmsettogglehelp(int set) 73557416Smarkm{ 73657416Smarkm struct togglelist *c; 73757416Smarkm 73857416Smarkm for (c = Togglelist; c->name; c++) { 73957416Smarkm if (c->help) { 74057416Smarkm if (*c->help) 74157416Smarkm printf("%-15s %s %s\r\n", c->name, set ? "enable" : "disable", 74257416Smarkm c->help); 74357416Smarkm else 74457416Smarkm printf("\r\n"); 74557416Smarkm } 74657416Smarkm } 74757416Smarkm} 74857416Smarkm 74957416Smarkm#define GETTOGGLE(name) (struct togglelist *) \ 75057416Smarkm genget(name, (char **) Togglelist, sizeof(struct togglelist)) 75157416Smarkm 75257416Smarkmstatic int 75357416Smarkmtoggle(int argc, char *argv[]) 75457416Smarkm{ 75557416Smarkm int retval = 1; 75657416Smarkm char *name; 75757416Smarkm struct togglelist *c; 75857416Smarkm 75957416Smarkm if (argc < 2) { 76057416Smarkm fprintf(stderr, 76157416Smarkm "Need an argument to 'toggle' command. 'toggle ?' for help.\r\n"); 76257416Smarkm return 0; 76357416Smarkm } 76457416Smarkm argc--; 76557416Smarkm argv++; 76657416Smarkm while (argc--) { 76757416Smarkm name = *argv++; 76857416Smarkm c = GETTOGGLE(name); 76957416Smarkm if (Ambiguous(c)) { 77057416Smarkm fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\r\n", 77157416Smarkm name); 77257416Smarkm return 0; 77357416Smarkm } else if (c == 0) { 77457416Smarkm fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\r\n", 77557416Smarkm name); 77657416Smarkm return 0; 77757416Smarkm } else { 77857416Smarkm if (c->variable) { 77957416Smarkm *c->variable = !*c->variable; /* invert it */ 78057416Smarkm if (c->actionexplanation) { 78157416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 78257416Smarkm c->actionexplanation); 78357416Smarkm } 78457416Smarkm } 78557416Smarkm if (c->handler) { 78657416Smarkm retval &= (*c->handler)(-1); 78757416Smarkm } 78857416Smarkm } 78957416Smarkm } 79057416Smarkm return retval; 79157416Smarkm} 79257416Smarkm 79357416Smarkm/* 79457416Smarkm * The following perform the "set" command. 79557416Smarkm */ 79657416Smarkm 79757416Smarkmstruct termios new_tc = { 0 }; 79857416Smarkm 79957416Smarkmstruct setlist { 80057416Smarkm char *name; /* name */ 80157416Smarkm char *help; /* help information */ 80257416Smarkm void (*handler)(); 80357416Smarkm cc_t *charp; /* where it is located at */ 80457416Smarkm}; 80557416Smarkm 80657416Smarkmstatic struct setlist Setlist[] = { 80757416Smarkm#ifdef KLUDGELINEMODE 80857416Smarkm { "echo", "character to toggle local echoing on/off", 0, &echoc }, 80957416Smarkm#endif 81057416Smarkm { "escape", "character to escape back to telnet command mode", 0, &escape }, 81157416Smarkm { "rlogin", "rlogin escape character", 0, &rlogin }, 81257416Smarkm { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 81357416Smarkm { " ", "" }, 81457416Smarkm { " ", "The following need 'localchars' to be toggled true", 0, 0 }, 81557416Smarkm { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar }, 81657416Smarkm { "interrupt", "character to cause an Interrupt Process", 0, &termIntChar }, 81757416Smarkm { "quit", "character to cause an Abort process", 0, &termQuitChar }, 81857416Smarkm { "eof", "character to cause an EOF ", 0, &termEofChar }, 81957416Smarkm { " ", "" }, 82057416Smarkm { " ", "The following are for local editing in linemode", 0, 0 }, 82157416Smarkm { "erase", "character to use to erase a character", 0, &termEraseChar }, 82257416Smarkm { "kill", "character to use to erase a line", 0, &termKillChar }, 82357416Smarkm { "lnext", "character to use for literal next", 0, &termLiteralNextChar }, 82457416Smarkm { "susp", "character to cause a Suspend Process", 0, &termSuspChar }, 82557416Smarkm { "reprint", "character to use for line reprint", 0, &termRprntChar }, 82657416Smarkm { "worderase", "character to use to erase a word", 0, &termWerasChar }, 82757416Smarkm { "start", "character to use for XON", 0, &termStartChar }, 82857416Smarkm { "stop", "character to use for XOFF", 0, &termStopChar }, 82957416Smarkm { "forw1", "alternate end of line character", 0, &termForw1Char }, 83057416Smarkm { "forw2", "alternate end of line character", 0, &termForw2Char }, 83157416Smarkm { "ayt", "alternate AYT character", 0, &termAytChar }, 83257416Smarkm { 0 } 83357416Smarkm}; 83457416Smarkm 83557416Smarkmstatic struct setlist * 83657416Smarkmgetset(char *name) 83757416Smarkm{ 83857416Smarkm return (struct setlist *) 83957416Smarkm genget(name, (char **) Setlist, sizeof(struct setlist)); 84057416Smarkm} 84157416Smarkm 84257416Smarkmvoid 84357416Smarkmset_escape_char(char *s) 84457416Smarkm{ 84557416Smarkm if (rlogin != _POSIX_VDISABLE) { 84657416Smarkm rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 84757416Smarkm printf("Telnet rlogin escape character is '%s'.\r\n", 84857416Smarkm control(rlogin)); 84957416Smarkm } else { 85057416Smarkm escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 85157416Smarkm printf("Telnet escape character is '%s'.\r\n", control(escape)); 85257416Smarkm } 85357416Smarkm} 85457416Smarkm 85557416Smarkmstatic int 85657416Smarkmsetcmd(int argc, char *argv[]) 85757416Smarkm{ 85857416Smarkm int value; 85957416Smarkm struct setlist *ct; 86057416Smarkm struct togglelist *c; 86157416Smarkm 86257416Smarkm if (argc < 2 || argc > 3) { 86357416Smarkm printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n"); 86457416Smarkm return 0; 86557416Smarkm } 86657416Smarkm if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) { 86757416Smarkm for (ct = Setlist; ct->name; ct++) 86857416Smarkm printf("%-15s %s\r\n", ct->name, ct->help); 86957416Smarkm printf("\r\n"); 87057416Smarkm settogglehelp(1); 87157416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 87257416Smarkm return 0; 87357416Smarkm } 87457416Smarkm 87557416Smarkm ct = getset(argv[1]); 87657416Smarkm if (ct == 0) { 87757416Smarkm c = GETTOGGLE(argv[1]); 87857416Smarkm if (c == 0) { 87957416Smarkm fprintf(stderr, "'%s': unknown argument ('set ?' for help).\r\n", 88057416Smarkm argv[1]); 88157416Smarkm return 0; 88257416Smarkm } else if (Ambiguous(c)) { 88357416Smarkm fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n", 88457416Smarkm argv[1]); 88557416Smarkm return 0; 88657416Smarkm } 88757416Smarkm if (c->variable) { 88857416Smarkm if ((argc == 2) || (strcmp("on", argv[2]) == 0)) 88957416Smarkm *c->variable = 1; 89057416Smarkm else if (strcmp("off", argv[2]) == 0) 89157416Smarkm *c->variable = 0; 89257416Smarkm else { 89357416Smarkm printf("Format is 'set togglename [on|off]'\r\n'set ?' for help.\r\n"); 89457416Smarkm return 0; 89557416Smarkm } 89657416Smarkm if (c->actionexplanation) { 89757416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 89857416Smarkm c->actionexplanation); 89957416Smarkm } 90057416Smarkm } 90157416Smarkm if (c->handler) 90257416Smarkm (*c->handler)(1); 90357416Smarkm } else if (argc != 3) { 90457416Smarkm printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n"); 90557416Smarkm return 0; 90657416Smarkm } else if (Ambiguous(ct)) { 90757416Smarkm fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n", 90857416Smarkm argv[1]); 90957416Smarkm return 0; 91057416Smarkm } else if (ct->handler) { 91157416Smarkm (*ct->handler)(argv[2]); 91257416Smarkm printf("%s set to \"%s\".\r\n", ct->name, (char *)ct->charp); 91357416Smarkm } else { 91457416Smarkm if (strcmp("off", argv[2])) { 91557416Smarkm value = special(argv[2]); 91657416Smarkm } else { 91757416Smarkm value = _POSIX_VDISABLE; 91857416Smarkm } 91957416Smarkm *(ct->charp) = (cc_t)value; 92057416Smarkm printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp))); 92157416Smarkm } 92257416Smarkm slc_check(); 92357416Smarkm return 1; 92457416Smarkm} 92557416Smarkm 92657416Smarkmstatic int 92757416Smarkmunsetcmd(int argc, char *argv[]) 92857416Smarkm{ 92957416Smarkm struct setlist *ct; 93057416Smarkm struct togglelist *c; 93157416Smarkm char *name; 93257416Smarkm 93357416Smarkm if (argc < 2) { 93457416Smarkm fprintf(stderr, 93557416Smarkm "Need an argument to 'unset' command. 'unset ?' for help.\r\n"); 93657416Smarkm return 0; 93757416Smarkm } 93857416Smarkm if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 93957416Smarkm for (ct = Setlist; ct->name; ct++) 94057416Smarkm printf("%-15s %s\r\n", ct->name, ct->help); 94157416Smarkm printf("\r\n"); 94257416Smarkm settogglehelp(0); 94357416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 94457416Smarkm return 0; 94557416Smarkm } 94657416Smarkm 94757416Smarkm argc--; 94857416Smarkm argv++; 94957416Smarkm while (argc--) { 95057416Smarkm name = *argv++; 95157416Smarkm ct = getset(name); 95257416Smarkm if (ct == 0) { 95357416Smarkm c = GETTOGGLE(name); 95457416Smarkm if (c == 0) { 95557416Smarkm fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\r\n", 95657416Smarkm name); 95757416Smarkm return 0; 95857416Smarkm } else if (Ambiguous(c)) { 95957416Smarkm fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n", 96057416Smarkm name); 96157416Smarkm return 0; 96257416Smarkm } 96357416Smarkm if (c->variable) { 96457416Smarkm *c->variable = 0; 96557416Smarkm if (c->actionexplanation) { 96657416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 96757416Smarkm c->actionexplanation); 96857416Smarkm } 96957416Smarkm } 97057416Smarkm if (c->handler) 97157416Smarkm (*c->handler)(0); 97257416Smarkm } else if (Ambiguous(ct)) { 97357416Smarkm fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n", 97457416Smarkm name); 97557416Smarkm return 0; 97657416Smarkm } else if (ct->handler) { 97757416Smarkm (*ct->handler)(0); 97857416Smarkm printf("%s reset to \"%s\".\r\n", ct->name, (char *)ct->charp); 97957416Smarkm } else { 98057416Smarkm *(ct->charp) = _POSIX_VDISABLE; 98157416Smarkm printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp))); 98257416Smarkm } 98357416Smarkm } 98457416Smarkm return 1; 98557416Smarkm} 98657416Smarkm 98757416Smarkm/* 98857416Smarkm * The following are the data structures and routines for the 98957416Smarkm * 'mode' command. 99057416Smarkm */ 99157416Smarkm#ifdef KLUDGELINEMODE 99257416Smarkm 99357416Smarkmstatic int 99457416Smarkmdokludgemode(void) 99557416Smarkm{ 99657416Smarkm kludgelinemode = 1; 99757416Smarkm send_wont(TELOPT_LINEMODE, 1); 99857416Smarkm send_dont(TELOPT_SGA, 1); 99957416Smarkm send_dont(TELOPT_ECHO, 1); 100057416Smarkm return 1; 100157416Smarkm} 100257416Smarkm#endif 100357416Smarkm 100457416Smarkmstatic int 100557416Smarkmdolinemode() 100657416Smarkm{ 100757416Smarkm#ifdef KLUDGELINEMODE 100857416Smarkm if (kludgelinemode) 100957416Smarkm send_dont(TELOPT_SGA, 1); 101057416Smarkm#endif 101157416Smarkm send_will(TELOPT_LINEMODE, 1); 101257416Smarkm send_dont(TELOPT_ECHO, 1); 101357416Smarkm return 1; 101457416Smarkm} 101557416Smarkm 101657416Smarkmstatic int 101757416Smarkmdocharmode() 101857416Smarkm{ 101957416Smarkm#ifdef KLUDGELINEMODE 102057416Smarkm if (kludgelinemode) 102157416Smarkm send_do(TELOPT_SGA, 1); 102257416Smarkm else 102357416Smarkm#endif 102457416Smarkm send_wont(TELOPT_LINEMODE, 1); 102557416Smarkm send_do(TELOPT_ECHO, 1); 102657416Smarkm return 1; 102757416Smarkm} 102857416Smarkm 102957416Smarkmstatic int 103057416Smarkmdolmmode(int bit, int on) 103157416Smarkm{ 103257416Smarkm unsigned char c; 103357416Smarkm 103457416Smarkm if (my_want_state_is_wont(TELOPT_LINEMODE)) { 103557416Smarkm printf("?Need to have LINEMODE option enabled first.\r\n"); 103657416Smarkm printf("'mode ?' for help.\r\n"); 103757416Smarkm return 0; 103857416Smarkm } 103957416Smarkm 104057416Smarkm if (on) 104157416Smarkm c = (linemode | bit); 104257416Smarkm else 104357416Smarkm c = (linemode & ~bit); 104457416Smarkm lm_mode(&c, 1, 1); 104557416Smarkm return 1; 104657416Smarkm} 104757416Smarkm 104857416Smarkmstatic int 104957416Smarkmtn_setmode(int bit) 105057416Smarkm{ 105157416Smarkm return dolmmode(bit, 1); 105257416Smarkm} 105357416Smarkm 105457416Smarkmstatic int 105557416Smarkmtn_clearmode(int bit) 105657416Smarkm{ 105757416Smarkm return dolmmode(bit, 0); 105857416Smarkm} 105957416Smarkm 106057416Smarkmstruct modelist { 106157416Smarkm char *name; /* command name */ 106257416Smarkm char *help; /* help string */ 106357416Smarkm int (*handler)(); /* routine which executes command */ 106457416Smarkm int needconnect; /* Do we need to be connected to execute? */ 106557416Smarkm int arg1; 106657416Smarkm}; 106757416Smarkm 106857416Smarkmstatic int modehelp(void); 106957416Smarkm 107057416Smarkmstatic struct modelist ModeList[] = { 107157416Smarkm { "character", "Disable LINEMODE option", docharmode, 1 }, 107257416Smarkm#ifdef KLUDGELINEMODE 107357416Smarkm { "", "(or disable obsolete line-by-line mode)", 0 }, 107457416Smarkm#endif 107557416Smarkm { "line", "Enable LINEMODE option", dolinemode, 1 }, 107657416Smarkm#ifdef KLUDGELINEMODE 107757416Smarkm { "", "(or enable obsolete line-by-line mode)", 0 }, 107857416Smarkm#endif 107957416Smarkm { "", "", 0 }, 108057416Smarkm { "", "These require the LINEMODE option to be enabled", 0 }, 108157416Smarkm { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG }, 108257416Smarkm { "+isig", 0, tn_setmode, 1, MODE_TRAPSIG }, 108357416Smarkm { "-isig", "Disable signal trapping", tn_clearmode, 1, MODE_TRAPSIG }, 108457416Smarkm { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT }, 108557416Smarkm { "+edit", 0, tn_setmode, 1, MODE_EDIT }, 108657416Smarkm { "-edit", "Disable character editing", tn_clearmode, 1, MODE_EDIT }, 108757416Smarkm { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB }, 108857416Smarkm { "+softtabs", 0, tn_setmode, 1, MODE_SOFT_TAB }, 108957416Smarkm { "-softtabs", "Disable character editing", tn_clearmode, 1, MODE_SOFT_TAB }, 109057416Smarkm { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO }, 109157416Smarkm { "+litecho", 0, tn_setmode, 1, MODE_LIT_ECHO }, 109257416Smarkm { "-litecho", "Disable literal character echo", tn_clearmode, 1, MODE_LIT_ECHO }, 109357416Smarkm { "help", 0, modehelp, 0 }, 109457416Smarkm#ifdef KLUDGELINEMODE 109557416Smarkm { "kludgeline", 0, dokludgemode, 1 }, 109657416Smarkm#endif 109757416Smarkm { "", "", 0 }, 109857416Smarkm { "?", "Print help information", modehelp, 0 }, 109957416Smarkm { 0 }, 110057416Smarkm}; 110157416Smarkm 110257416Smarkm 110357416Smarkmstatic int 110457416Smarkmmodehelp(void) 110557416Smarkm{ 110657416Smarkm struct modelist *mt; 110757416Smarkm 110857416Smarkm printf("format is: 'mode Mode', where 'Mode' is one of:\r\n\r\n"); 110957416Smarkm for (mt = ModeList; mt->name; mt++) { 111057416Smarkm if (mt->help) { 111157416Smarkm if (*mt->help) 111257416Smarkm printf("%-15s %s\r\n", mt->name, mt->help); 111357416Smarkm else 111457416Smarkm printf("\r\n"); 111557416Smarkm } 111657416Smarkm } 111757416Smarkm return 0; 111857416Smarkm} 111957416Smarkm 112057416Smarkm#define GETMODECMD(name) (struct modelist *) \ 112157416Smarkm genget(name, (char **) ModeList, sizeof(struct modelist)) 112257416Smarkm 112357416Smarkmstatic int 112457416Smarkmmodecmd(int argc, char **argv) 112557416Smarkm{ 112657416Smarkm struct modelist *mt; 112757416Smarkm 112857416Smarkm if (argc != 2) { 112957416Smarkm printf("'mode' command requires an argument\r\n"); 113057416Smarkm printf("'mode ?' for help.\r\n"); 113157416Smarkm } else if ((mt = GETMODECMD(argv[1])) == 0) { 113257416Smarkm fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\r\n", argv[1]); 113357416Smarkm } else if (Ambiguous(mt)) { 113457416Smarkm fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\r\n", argv[1]); 113557416Smarkm } else if (mt->needconnect && !connected) { 113657416Smarkm printf("?Need to be connected first.\r\n"); 113757416Smarkm printf("'mode ?' for help.\r\n"); 113857416Smarkm } else if (mt->handler) { 113957416Smarkm return (*mt->handler)(mt->arg1); 114057416Smarkm } 114157416Smarkm return 0; 114257416Smarkm} 114357416Smarkm 114457416Smarkm/* 114557416Smarkm * The following data structures and routines implement the 114657416Smarkm * "display" command. 114757416Smarkm */ 114857416Smarkm 114957416Smarkmstatic int 115057416Smarkmdisplay(int argc, char *argv[]) 115157416Smarkm{ 115257416Smarkm struct togglelist *tl; 115357416Smarkm struct setlist *sl; 115457416Smarkm 115557416Smarkm#define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 115657416Smarkm if (*tl->variable) { \ 115757416Smarkm printf("will"); \ 115857416Smarkm } else { \ 115957416Smarkm printf("won't"); \ 116057416Smarkm } \ 116157416Smarkm printf(" %s.\r\n", tl->actionexplanation); \ 116257416Smarkm } 116357416Smarkm 116457416Smarkm#define doset(sl) if (sl->name && *sl->name != ' ') { \ 116557416Smarkm if (sl->handler == 0) \ 116657416Smarkm printf("%-15s [%s]\r\n", sl->name, control(*sl->charp)); \ 116757416Smarkm else \ 116857416Smarkm printf("%-15s \"%s\"\r\n", sl->name, (char *)sl->charp); \ 116957416Smarkm } 117057416Smarkm 117157416Smarkm if (argc == 1) { 117257416Smarkm for (tl = Togglelist; tl->name; tl++) { 117357416Smarkm dotog(tl); 117457416Smarkm } 117557416Smarkm printf("\r\n"); 117657416Smarkm for (sl = Setlist; sl->name; sl++) { 117757416Smarkm doset(sl); 117857416Smarkm } 117957416Smarkm } else { 118057416Smarkm int i; 118157416Smarkm 118257416Smarkm for (i = 1; i < argc; i++) { 118357416Smarkm sl = getset(argv[i]); 118457416Smarkm tl = GETTOGGLE(argv[i]); 118557416Smarkm if (Ambiguous(sl) || Ambiguous(tl)) { 118657416Smarkm printf("?Ambiguous argument '%s'.\r\n", argv[i]); 118757416Smarkm return 0; 118857416Smarkm } else if (!sl && !tl) { 118957416Smarkm printf("?Unknown argument '%s'.\r\n", argv[i]); 119057416Smarkm return 0; 119157416Smarkm } else { 119257416Smarkm if (tl) { 119357416Smarkm dotog(tl); 119457416Smarkm } 119557416Smarkm if (sl) { 119657416Smarkm doset(sl); 119757416Smarkm } 119857416Smarkm } 119957416Smarkm } 120057416Smarkm } 120157416Smarkm/*@*/optionstatus(); 120257416Smarkm#if defined(ENCRYPTION) 120357416Smarkm EncryptStatus(); 120457416Smarkm#endif 120557416Smarkm return 1; 120657416Smarkm#undef doset 120757416Smarkm#undef dotog 120857416Smarkm} 120957416Smarkm 121057416Smarkm/* 121157416Smarkm * The following are the data structures, and many of the routines, 121257416Smarkm * relating to command processing. 121357416Smarkm */ 121457416Smarkm 121557416Smarkm/* 121657416Smarkm * Set the escape character. 121757416Smarkm */ 121857416Smarkmstatic int 121957416Smarkmsetescape(int argc, char *argv[]) 122057416Smarkm{ 122157416Smarkm char *arg; 122257416Smarkm char buf[50]; 122357416Smarkm 122457416Smarkm printf( 122557416Smarkm "Deprecated usage - please use 'set escape%s%s' in the future.\r\n", 122657416Smarkm (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 122757416Smarkm if (argc > 2) 122857416Smarkm arg = argv[1]; 122957416Smarkm else { 123057416Smarkm printf("new escape character: "); 123157416Smarkm fgets(buf, sizeof(buf), stdin); 123257416Smarkm arg = buf; 123357416Smarkm } 123457416Smarkm if (arg[0] != '\0') 123557416Smarkm escape = arg[0]; 123657416Smarkm printf("Escape character is '%s'.\r\n", control(escape)); 123757416Smarkm 123857416Smarkm fflush(stdout); 123957416Smarkm return 1; 124057416Smarkm} 124157416Smarkm 124257416Smarkmstatic int 124357416Smarkmtogcrmod() 124457416Smarkm{ 124557416Smarkm crmod = !crmod; 124657416Smarkm printf("Deprecated usage - please use 'toggle crmod' in the future.\r\n"); 124757416Smarkm printf("%s map carriage return on output.\r\n", crmod ? "Will" : "Won't"); 124857416Smarkm fflush(stdout); 124957416Smarkm return 1; 125057416Smarkm} 125157416Smarkm 125257416Smarkmstatic int 125357416Smarkmtelnetsuspend() 125457416Smarkm{ 125557416Smarkm#ifdef SIGTSTP 125657416Smarkm setcommandmode(); 125757416Smarkm { 125857416Smarkm long oldrows, oldcols, newrows, newcols, err; 125957416Smarkm 126057416Smarkm err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 126157416Smarkm kill(0, SIGTSTP); 126257416Smarkm /* 126357416Smarkm * If we didn't get the window size before the SUSPEND, but we 126457416Smarkm * can get them now (?), then send the NAWS to make sure that 126557416Smarkm * we are set up for the right window size. 126657416Smarkm */ 126757416Smarkm if (TerminalWindowSize(&newrows, &newcols) && connected && 126857416Smarkm (err || ((oldrows != newrows) || (oldcols != newcols)))) { 126957416Smarkm sendnaws(); 127057416Smarkm } 127157416Smarkm } 127257416Smarkm /* reget parameters in case they were changed */ 127357416Smarkm TerminalSaveState(); 127457416Smarkm setconnmode(0); 127557416Smarkm#else 127657416Smarkm printf("Suspend is not supported. Try the '!' command instead\r\n"); 127757416Smarkm#endif 127857416Smarkm return 1; 127957416Smarkm} 128057416Smarkm 128157416Smarkmstatic int 128257416Smarkmshell(int argc, char **argv) 128357416Smarkm{ 128457416Smarkm long oldrows, oldcols, newrows, newcols, err; 128557416Smarkm 128657416Smarkm setcommandmode(); 128757416Smarkm 128857416Smarkm err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 128957416Smarkm switch(fork()) { 129057416Smarkm case -1: 129157416Smarkm perror("Fork failed\r\n"); 129257416Smarkm break; 129357416Smarkm 129457416Smarkm case 0: 129557416Smarkm { 129657416Smarkm /* 129757416Smarkm * Fire up the shell in the child. 129857416Smarkm */ 129957416Smarkm char *shellp, *shellname; 130057416Smarkm 130157416Smarkm shellp = getenv("SHELL"); 130257416Smarkm if (shellp == NULL) 130357416Smarkm shellp = "/bin/sh"; 130457416Smarkm if ((shellname = strrchr(shellp, '/')) == 0) 130557416Smarkm shellname = shellp; 130657416Smarkm else 130757416Smarkm shellname++; 130857416Smarkm if (argc > 1) 130957416Smarkm execl(shellp, shellname, "-c", &saveline[1], 0); 131057416Smarkm else 131157416Smarkm execl(shellp, shellname, 0); 131257416Smarkm perror("Execl"); 131357416Smarkm _exit(1); 131457416Smarkm } 131557416Smarkm default: 131657416Smarkm wait((int *)0); /* Wait for the shell to complete */ 131757416Smarkm 131857416Smarkm if (TerminalWindowSize(&newrows, &newcols) && connected && 131957416Smarkm (err || ((oldrows != newrows) || (oldcols != newcols)))) { 132057416Smarkm sendnaws(); 132157416Smarkm } 132257416Smarkm break; 132357416Smarkm } 132457416Smarkm return 1; 132557416Smarkm} 132657416Smarkm 132757416Smarkmstatic int 132857416Smarkmbye(int argc, char **argv) 132957416Smarkm{ 133057416Smarkm if (connected) { 133157416Smarkm shutdown(net, 2); 133257416Smarkm printf("Connection closed.\r\n"); 133357416Smarkm NetClose(net); 133457416Smarkm connected = 0; 133557416Smarkm resettermname = 1; 133657416Smarkm#if defined(AUTHENTICATION) || defined(ENCRYPTION) 133757416Smarkm auth_encrypt_connect(connected); 133857416Smarkm#endif 133957416Smarkm /* reset options */ 134057416Smarkm tninit(); 134157416Smarkm } 134257416Smarkm if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) 134357416Smarkm longjmp(toplevel, 1); 134457416Smarkm return 0; /* NOTREACHED */ 134557416Smarkm} 134657416Smarkm 134757416Smarkmint 134857416Smarkmquit(void) 134957416Smarkm{ 135057416Smarkm call(bye, "bye", "fromquit", 0); 135157416Smarkm Exit(0); 135257416Smarkm return 0; /*NOTREACHED*/ 135357416Smarkm} 135457416Smarkm 135557416Smarkmstatic int 135657416Smarkmlogout() 135757416Smarkm{ 135857416Smarkm send_do(TELOPT_LOGOUT, 1); 135957416Smarkm netflush(); 136057416Smarkm return 1; 136157416Smarkm} 136257416Smarkm 136357416Smarkm 136457416Smarkm/* 136557416Smarkm * The SLC command. 136657416Smarkm */ 136757416Smarkm 136857416Smarkmstruct slclist { 136957416Smarkm char *name; 137057416Smarkm char *help; 137157416Smarkm void (*handler)(); 137257416Smarkm int arg; 137357416Smarkm}; 137457416Smarkm 137557416Smarkmstatic void slc_help(void); 137657416Smarkm 137757416Smarkmstruct slclist SlcList[] = { 137857416Smarkm { "export", "Use local special character definitions", 137957416Smarkm slc_mode_export, 0 }, 138057416Smarkm { "import", "Use remote special character definitions", 138157416Smarkm slc_mode_import, 1 }, 138257416Smarkm { "check", "Verify remote special character definitions", 138357416Smarkm slc_mode_import, 0 }, 138457416Smarkm { "help", 0, slc_help, 0 }, 138557416Smarkm { "?", "Print help information", slc_help, 0 }, 138657416Smarkm { 0 }, 138757416Smarkm}; 138857416Smarkm 138957416Smarkmstatic void 139057416Smarkmslc_help(void) 139157416Smarkm{ 139257416Smarkm struct slclist *c; 139357416Smarkm 139457416Smarkm for (c = SlcList; c->name; c++) { 139557416Smarkm if (c->help) { 139657416Smarkm if (*c->help) 139757416Smarkm printf("%-15s %s\r\n", c->name, c->help); 139857416Smarkm else 139957416Smarkm printf("\r\n"); 140057416Smarkm } 140157416Smarkm } 140257416Smarkm} 140357416Smarkm 140457416Smarkmstatic struct slclist * 140557416Smarkmgetslc(char *name) 140657416Smarkm{ 140757416Smarkm return (struct slclist *) 140857416Smarkm genget(name, (char **) SlcList, sizeof(struct slclist)); 140957416Smarkm} 141057416Smarkm 141157416Smarkmstatic int 141257416Smarkmslccmd(int argc, char **argv) 141357416Smarkm{ 141457416Smarkm struct slclist *c; 141557416Smarkm 141657416Smarkm if (argc != 2) { 141757416Smarkm fprintf(stderr, 141857416Smarkm "Need an argument to 'slc' command. 'slc ?' for help.\r\n"); 141957416Smarkm return 0; 142057416Smarkm } 142157416Smarkm c = getslc(argv[1]); 142257416Smarkm if (c == 0) { 142357416Smarkm fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\r\n", 142457416Smarkm argv[1]); 142557416Smarkm return 0; 142657416Smarkm } 142757416Smarkm if (Ambiguous(c)) { 142857416Smarkm fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\r\n", 142957416Smarkm argv[1]); 143057416Smarkm return 0; 143157416Smarkm } 143257416Smarkm (*c->handler)(c->arg); 143357416Smarkm slcstate(); 143457416Smarkm return 1; 143557416Smarkm} 143657416Smarkm 143757416Smarkm/* 143857416Smarkm * The ENVIRON command. 143957416Smarkm */ 144057416Smarkm 144157416Smarkmstruct envlist { 144257416Smarkm char *name; 144357416Smarkm char *help; 144457416Smarkm void (*handler)(); 144557416Smarkm int narg; 144657416Smarkm}; 144757416Smarkm 144857416Smarkmstatic void env_help (void); 144957416Smarkm 145057416Smarkmstruct envlist EnvList[] = { 145157416Smarkm { "define", "Define an environment variable", 145257416Smarkm (void (*)())env_define, 2 }, 145357416Smarkm { "undefine", "Undefine an environment variable", 145457416Smarkm env_undefine, 1 }, 145557416Smarkm { "export", "Mark an environment variable for automatic export", 145657416Smarkm env_export, 1 }, 145757416Smarkm { "unexport", "Don't mark an environment variable for automatic export", 145857416Smarkm env_unexport, 1 }, 145957416Smarkm { "send", "Send an environment variable", env_send, 1 }, 146057416Smarkm { "list", "List the current environment variables", 146157416Smarkm env_list, 0 }, 146257416Smarkm { "help", 0, env_help, 0 }, 146357416Smarkm { "?", "Print help information", env_help, 0 }, 146457416Smarkm { 0 }, 146557416Smarkm}; 146657416Smarkm 146757416Smarkmstatic void 146857416Smarkmenv_help() 146957416Smarkm{ 147057416Smarkm struct envlist *c; 147157416Smarkm 147257416Smarkm for (c = EnvList; c->name; c++) { 147357416Smarkm if (c->help) { 147457416Smarkm if (*c->help) 147557416Smarkm printf("%-15s %s\r\n", c->name, c->help); 147657416Smarkm else 147757416Smarkm printf("\r\n"); 147857416Smarkm } 147957416Smarkm } 148057416Smarkm} 148157416Smarkm 148257416Smarkmstatic struct envlist * 148357416Smarkmgetenvcmd(char *name) 148457416Smarkm{ 148557416Smarkm return (struct envlist *) 148657416Smarkm genget(name, (char **) EnvList, sizeof(struct envlist)); 148757416Smarkm} 148857416Smarkm 148957416Smarkmstatic int 149057416Smarkmenv_cmd(int argc, char **argv) 149157416Smarkm{ 149257416Smarkm struct envlist *c; 149357416Smarkm 149457416Smarkm if (argc < 2) { 149557416Smarkm fprintf(stderr, 149657416Smarkm "Need an argument to 'environ' command. 'environ ?' for help.\r\n"); 149757416Smarkm return 0; 149857416Smarkm } 149957416Smarkm c = getenvcmd(argv[1]); 150057416Smarkm if (c == 0) { 150157416Smarkm fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\r\n", 150257416Smarkm argv[1]); 150357416Smarkm return 0; 150457416Smarkm } 150557416Smarkm if (Ambiguous(c)) { 150657416Smarkm fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\r\n", 150757416Smarkm argv[1]); 150857416Smarkm return 0; 150957416Smarkm } 151057416Smarkm if (c->narg + 2 != argc) { 151157416Smarkm fprintf(stderr, 151257416Smarkm "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\r\n", 151357416Smarkm c->narg < argc + 2 ? "only " : "", 151457416Smarkm c->narg, c->narg == 1 ? "" : "s", c->name); 151557416Smarkm return 0; 151657416Smarkm } 151757416Smarkm (*c->handler)(argv[2], argv[3]); 151857416Smarkm return 1; 151957416Smarkm} 152057416Smarkm 152157416Smarkmstruct env_lst { 152257416Smarkm struct env_lst *next; /* pointer to next structure */ 152357416Smarkm struct env_lst *prev; /* pointer to previous structure */ 152457416Smarkm unsigned char *var; /* pointer to variable name */ 152557416Smarkm unsigned char *value; /* pointer to variable value */ 152657416Smarkm int export; /* 1 -> export with default list of variables */ 152757416Smarkm int welldefined; /* A well defined variable */ 152857416Smarkm}; 152957416Smarkm 153057416Smarkmstruct env_lst envlisthead; 153157416Smarkm 153257416Smarkmstruct env_lst * 153357416Smarkmenv_find(unsigned char *var) 153457416Smarkm{ 153557416Smarkm struct env_lst *ep; 153657416Smarkm 153757416Smarkm for (ep = envlisthead.next; ep; ep = ep->next) { 153857416Smarkm if (strcmp((char *)ep->var, (char *)var) == 0) 153957416Smarkm return(ep); 154057416Smarkm } 154157416Smarkm return(NULL); 154257416Smarkm} 154357416Smarkm 154457416Smarkm#if IRIX == 4 154557416Smarkm#define environ _environ 154657416Smarkm#endif 154757416Smarkm 154857416Smarkmvoid 154957416Smarkmenv_init(void) 155057416Smarkm{ 155157416Smarkm char **epp, *cp; 155257416Smarkm struct env_lst *ep; 155357416Smarkm 155457416Smarkm for (epp = environ; *epp; epp++) { 155557416Smarkm if ((cp = strchr(*epp, '='))) { 155657416Smarkm *cp = '\0'; 155757416Smarkm ep = env_define((unsigned char *)*epp, 155857416Smarkm (unsigned char *)cp+1); 155957416Smarkm ep->export = 0; 156057416Smarkm *cp = '='; 156157416Smarkm } 156257416Smarkm } 156357416Smarkm /* 156457416Smarkm * Special case for DISPLAY variable. If it is ":0.0" or 156557416Smarkm * "unix:0.0", we have to get rid of "unix" and insert our 156657416Smarkm * hostname. 156757416Smarkm */ 156890926Snectar if ((ep = env_find((unsigned char*)"DISPLAY")) 156957416Smarkm && (*ep->value == ':' 157057416Smarkm || strncmp((char *)ep->value, "unix:", 5) == 0)) { 157157416Smarkm char hbuf[256+1]; 157257416Smarkm char *cp2 = strchr((char *)ep->value, ':'); 157357416Smarkm 157457416Smarkm /* XXX - should be k_gethostname? */ 157557416Smarkm gethostname(hbuf, 256); 157657416Smarkm hbuf[256] = '\0'; 157757416Smarkm 157857416Smarkm /* If this is not the full name, try to get it via DNS */ 157957416Smarkm if (strchr(hbuf, '.') == 0) { 158057416Smarkm struct addrinfo hints, *ai, *a; 158157416Smarkm int error; 158257416Smarkm 158357416Smarkm memset (&hints, 0, sizeof(hints)); 158457416Smarkm hints.ai_flags = AI_CANONNAME; 158557416Smarkm 158657416Smarkm error = getaddrinfo (hbuf, NULL, &hints, &ai); 158757416Smarkm if (error == 0) { 158857416Smarkm for (a = ai; a != NULL; a = a->ai_next) 158957416Smarkm if (a->ai_canonname != NULL) { 159057416Smarkm strlcpy (hbuf, 159157416Smarkm ai->ai_canonname, 159257416Smarkm 256); 159357416Smarkm break; 159457416Smarkm } 159557416Smarkm freeaddrinfo (ai); 159657416Smarkm } 159757416Smarkm } 159857416Smarkm 159957416Smarkm asprintf (&cp, "%s%s", hbuf, cp2); 160057416Smarkm free (ep->value); 160157416Smarkm ep->value = (unsigned char *)cp; 160257416Smarkm } 160357416Smarkm /* 160457416Smarkm * If USER is not defined, but LOGNAME is, then add 160557416Smarkm * USER with the value from LOGNAME. By default, we 160657416Smarkm * don't export the USER variable. 160757416Smarkm */ 160890926Snectar if ((env_find((unsigned char*)"USER") == NULL) && 160990926Snectar (ep = env_find((unsigned char*)"LOGNAME"))) { 161057416Smarkm env_define((unsigned char *)"USER", ep->value); 161157416Smarkm env_unexport((unsigned char *)"USER"); 161257416Smarkm } 161357416Smarkm env_export((unsigned char *)"DISPLAY"); 161457416Smarkm env_export((unsigned char *)"PRINTER"); 161557416Smarkm env_export((unsigned char *)"XAUTHORITY"); 161657416Smarkm} 161757416Smarkm 161857416Smarkmstruct env_lst * 161957416Smarkmenv_define(unsigned char *var, unsigned char *value) 162057416Smarkm{ 162157416Smarkm struct env_lst *ep; 162257416Smarkm 162357416Smarkm if ((ep = env_find(var))) { 162457416Smarkm if (ep->var) 162557416Smarkm free(ep->var); 162657416Smarkm if (ep->value) 162757416Smarkm free(ep->value); 162857416Smarkm } else { 162957416Smarkm ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 163057416Smarkm ep->next = envlisthead.next; 163157416Smarkm envlisthead.next = ep; 163257416Smarkm ep->prev = &envlisthead; 163357416Smarkm if (ep->next) 163457416Smarkm ep->next->prev = ep; 163557416Smarkm } 163657416Smarkm ep->welldefined = opt_welldefined((char *)var); 163757416Smarkm ep->export = 1; 163857416Smarkm ep->var = (unsigned char *)strdup((char *)var); 163957416Smarkm ep->value = (unsigned char *)strdup((char *)value); 164057416Smarkm return(ep); 164157416Smarkm} 164257416Smarkm 164357416Smarkmvoid 164457416Smarkmenv_undefine(unsigned char *var) 164557416Smarkm{ 164657416Smarkm struct env_lst *ep; 164757416Smarkm 164857416Smarkm if ((ep = env_find(var))) { 164957416Smarkm ep->prev->next = ep->next; 165057416Smarkm if (ep->next) 165157416Smarkm ep->next->prev = ep->prev; 165257416Smarkm if (ep->var) 165357416Smarkm free(ep->var); 165457416Smarkm if (ep->value) 165557416Smarkm free(ep->value); 165657416Smarkm free(ep); 165757416Smarkm } 165857416Smarkm} 165957416Smarkm 166057416Smarkmvoid 166157416Smarkmenv_export(unsigned char *var) 166257416Smarkm{ 166357416Smarkm struct env_lst *ep; 166457416Smarkm 166557416Smarkm if ((ep = env_find(var))) 166657416Smarkm ep->export = 1; 166757416Smarkm} 166857416Smarkm 166957416Smarkmvoid 167057416Smarkmenv_unexport(unsigned char *var) 167157416Smarkm{ 167257416Smarkm struct env_lst *ep; 167357416Smarkm 167457416Smarkm if ((ep = env_find(var))) 167557416Smarkm ep->export = 0; 167657416Smarkm} 167757416Smarkm 167857416Smarkmvoid 167957416Smarkmenv_send(unsigned char *var) 168057416Smarkm{ 168157416Smarkm struct env_lst *ep; 168257416Smarkm 168357416Smarkm if (my_state_is_wont(TELOPT_NEW_ENVIRON) 168457416Smarkm#ifdef OLD_ENVIRON 168557416Smarkm && my_state_is_wont(TELOPT_OLD_ENVIRON) 168657416Smarkm#endif 168757416Smarkm ) { 168857416Smarkm fprintf(stderr, 168957416Smarkm "Cannot send '%s': Telnet ENVIRON option not enabled\r\n", 169057416Smarkm var); 169157416Smarkm return; 169257416Smarkm } 169357416Smarkm ep = env_find(var); 169457416Smarkm if (ep == 0) { 169557416Smarkm fprintf(stderr, "Cannot send '%s': variable not defined\r\n", 169657416Smarkm var); 169757416Smarkm return; 169857416Smarkm } 169957416Smarkm env_opt_start_info(); 170057416Smarkm env_opt_add(ep->var); 170157416Smarkm env_opt_end(0); 170257416Smarkm} 170357416Smarkm 170457416Smarkmvoid 170557416Smarkmenv_list(void) 170657416Smarkm{ 170757416Smarkm struct env_lst *ep; 170857416Smarkm 170957416Smarkm for (ep = envlisthead.next; ep; ep = ep->next) { 171057416Smarkm printf("%c %-20s %s\r\n", ep->export ? '*' : ' ', 171157416Smarkm ep->var, ep->value); 171257416Smarkm } 171357416Smarkm} 171457416Smarkm 171557416Smarkmunsigned char * 171657416Smarkmenv_default(int init, int welldefined) 171757416Smarkm{ 171857416Smarkm static struct env_lst *nep = NULL; 171957416Smarkm 172057416Smarkm if (init) { 172157416Smarkm nep = &envlisthead; 172257416Smarkm return NULL; 172357416Smarkm } 172457416Smarkm if (nep) { 172557416Smarkm while ((nep = nep->next)) { 172657416Smarkm if (nep->export && (nep->welldefined == welldefined)) 172757416Smarkm return(nep->var); 172857416Smarkm } 172957416Smarkm } 173057416Smarkm return(NULL); 173157416Smarkm} 173257416Smarkm 173357416Smarkmunsigned char * 173457416Smarkmenv_getvalue(unsigned char *var) 173557416Smarkm{ 173657416Smarkm struct env_lst *ep; 173757416Smarkm 173857416Smarkm if ((ep = env_find(var))) 173957416Smarkm return(ep->value); 174057416Smarkm return(NULL); 174157416Smarkm} 174257416Smarkm 174357416Smarkm 174457416Smarkm#if defined(AUTHENTICATION) 174557416Smarkm/* 174657416Smarkm * The AUTHENTICATE command. 174757416Smarkm */ 174857416Smarkm 174957416Smarkmstruct authlist { 175057416Smarkm char *name; 175157416Smarkm char *help; 175257416Smarkm int (*handler)(); 175357416Smarkm int narg; 175457416Smarkm}; 175557416Smarkm 175657416Smarkmstatic int 175757416Smarkm auth_help (void); 175857416Smarkm 175957416Smarkmstruct authlist AuthList[] = { 176057416Smarkm { "status", "Display current status of authentication information", 176157416Smarkm auth_status, 0 }, 176257416Smarkm { "disable", "Disable an authentication type ('auth disable ?' for more)", 176357416Smarkm auth_disable, 1 }, 176457416Smarkm { "enable", "Enable an authentication type ('auth enable ?' for more)", 176557416Smarkm auth_enable, 1 }, 176657416Smarkm { "help", 0, auth_help, 0 }, 176757416Smarkm { "?", "Print help information", auth_help, 0 }, 176857416Smarkm { 0 }, 176957416Smarkm}; 177057416Smarkm 177157416Smarkmstatic int 177257416Smarkmauth_help() 177357416Smarkm{ 177457416Smarkm struct authlist *c; 177557416Smarkm 177657416Smarkm for (c = AuthList; c->name; c++) { 177757416Smarkm if (c->help) { 177857416Smarkm if (*c->help) 177957416Smarkm printf("%-15s %s\r\n", c->name, c->help); 178057416Smarkm else 178157416Smarkm printf("\r\n"); 178257416Smarkm } 178357416Smarkm } 178457416Smarkm return 0; 178557416Smarkm} 178657416Smarkm 178757416Smarkmstatic int 178857416Smarkmauth_cmd(int argc, char **argv) 178957416Smarkm{ 179057416Smarkm struct authlist *c; 179157416Smarkm 179257416Smarkm if (argc < 2) { 179357416Smarkm fprintf(stderr, 179457416Smarkm "Need an argument to 'auth' command. 'auth ?' for help.\r\n"); 179557416Smarkm return 0; 179657416Smarkm } 179757416Smarkm 179857416Smarkm c = (struct authlist *) 179957416Smarkm genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 180057416Smarkm if (c == 0) { 180157416Smarkm fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\r\n", 180257416Smarkm argv[1]); 180357416Smarkm return 0; 180457416Smarkm } 180557416Smarkm if (Ambiguous(c)) { 180657416Smarkm fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\r\n", 180757416Smarkm argv[1]); 180857416Smarkm return 0; 180957416Smarkm } 181057416Smarkm if (c->narg + 2 != argc) { 181157416Smarkm fprintf(stderr, 181257416Smarkm "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\r\n", 181357416Smarkm c->narg < argc + 2 ? "only " : "", 181457416Smarkm c->narg, c->narg == 1 ? "" : "s", c->name); 181557416Smarkm return 0; 181657416Smarkm } 181757416Smarkm return((*c->handler)(argv[2], argv[3])); 181857416Smarkm} 181957416Smarkm#endif 182057416Smarkm 182157416Smarkm 182257416Smarkm#if defined(ENCRYPTION) 182357416Smarkm/* 182457416Smarkm * The ENCRYPT command. 182557416Smarkm */ 182657416Smarkm 182757416Smarkmstruct encryptlist { 182857416Smarkm char *name; 182957416Smarkm char *help; 183057416Smarkm int (*handler)(); 183157416Smarkm int needconnect; 183257416Smarkm int minarg; 183357416Smarkm int maxarg; 183457416Smarkm}; 183557416Smarkm 183657416Smarkmstatic int 183757416Smarkm EncryptHelp (void); 183857416Smarkm 183957416Smarkmstruct encryptlist EncryptList[] = { 184057416Smarkm { "enable", "Enable encryption. ('encrypt enable ?' for more)", 184157416Smarkm EncryptEnable, 1, 1, 2 }, 184257416Smarkm { "disable", "Disable encryption. ('encrypt enable ?' for more)", 184357416Smarkm EncryptDisable, 0, 1, 2 }, 184457416Smarkm { "type", "Set encryptiong type. ('encrypt type ?' for more)", 184557416Smarkm EncryptType, 0, 1, 1 }, 184657416Smarkm { "start", "Start encryption. ('encrypt start ?' for more)", 184757416Smarkm EncryptStart, 1, 0, 1 }, 184857416Smarkm { "stop", "Stop encryption. ('encrypt stop ?' for more)", 184957416Smarkm EncryptStop, 1, 0, 1 }, 185057416Smarkm { "input", "Start encrypting the input stream", 185157416Smarkm EncryptStartInput, 1, 0, 0 }, 185257416Smarkm { "-input", "Stop encrypting the input stream", 185357416Smarkm EncryptStopInput, 1, 0, 0 }, 185457416Smarkm { "output", "Start encrypting the output stream", 185557416Smarkm EncryptStartOutput, 1, 0, 0 }, 185657416Smarkm { "-output", "Stop encrypting the output stream", 185757416Smarkm EncryptStopOutput, 1, 0, 0 }, 185857416Smarkm 185957416Smarkm { "status", "Display current status of authentication information", 186057416Smarkm EncryptStatus, 0, 0, 0 }, 186157416Smarkm { "help", 0, EncryptHelp, 0, 0, 0 }, 186257416Smarkm { "?", "Print help information", EncryptHelp, 0, 0, 0 }, 186357416Smarkm { 0 }, 186457416Smarkm}; 186557416Smarkm 186657416Smarkmstatic int 186757416SmarkmEncryptHelp() 186857416Smarkm{ 186957416Smarkm struct encryptlist *c; 187057416Smarkm 187157416Smarkm for (c = EncryptList; c->name; c++) { 187257416Smarkm if (c->help) { 187357416Smarkm if (*c->help) 187457416Smarkm printf("%-15s %s\r\n", c->name, c->help); 187557416Smarkm else 187657416Smarkm printf("\r\n"); 187757416Smarkm } 187857416Smarkm } 187957416Smarkm return 0; 188057416Smarkm} 188157416Smarkm 188257416Smarkmstatic int 188357416Smarkmencrypt_cmd(int argc, char **argv) 188457416Smarkm{ 188557416Smarkm struct encryptlist *c; 188657416Smarkm 188757416Smarkm c = (struct encryptlist *) 188857416Smarkm genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist)); 188957416Smarkm if (c == 0) { 189057416Smarkm fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\r\n", 189157416Smarkm argv[1]); 189257416Smarkm return 0; 189357416Smarkm } 189457416Smarkm if (Ambiguous(c)) { 189557416Smarkm fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\r\n", 189657416Smarkm argv[1]); 189757416Smarkm return 0; 189857416Smarkm } 189957416Smarkm argc -= 2; 190057416Smarkm if (argc < c->minarg || argc > c->maxarg) { 190157416Smarkm if (c->minarg == c->maxarg) { 190257416Smarkm fprintf(stderr, "Need %s%d argument%s ", 190357416Smarkm c->minarg < argc ? "only " : "", c->minarg, 190457416Smarkm c->minarg == 1 ? "" : "s"); 190557416Smarkm } else { 190657416Smarkm fprintf(stderr, "Need %s%d-%d arguments ", 190757416Smarkm c->maxarg < argc ? "only " : "", c->minarg, c->maxarg); 190857416Smarkm } 190957416Smarkm fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\r\n", 191057416Smarkm c->name); 191157416Smarkm return 0; 191257416Smarkm } 191357416Smarkm if (c->needconnect && !connected) { 191457416Smarkm if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) { 191557416Smarkm printf("?Need to be connected first.\r\n"); 191657416Smarkm return 0; 191757416Smarkm } 191857416Smarkm } 191957416Smarkm return ((*c->handler)(argc > 0 ? argv[2] : 0, 192057416Smarkm argc > 1 ? argv[3] : 0, 192157416Smarkm argc > 2 ? argv[4] : 0)); 192257416Smarkm} 192357416Smarkm#endif 192457416Smarkm 192557416Smarkm 192657416Smarkm/* 192757416Smarkm * Print status about the connection. 192857416Smarkm */ 192957416Smarkm 193057416Smarkmstatic int 193157416Smarkmstatus(int argc, char **argv) 193257416Smarkm{ 193357416Smarkm if (connected) { 193457416Smarkm printf("Connected to %s.\r\n", hostname); 193557416Smarkm if ((argc < 2) || strcmp(argv[1], "notmuch")) { 193657416Smarkm int mode = getconnmode(); 193757416Smarkm 193857416Smarkm if (my_want_state_is_will(TELOPT_LINEMODE)) { 193957416Smarkm printf("Operating with LINEMODE option\r\n"); 194057416Smarkm printf("%s line editing\r\n", (mode&MODE_EDIT) ? "Local" : "No"); 194157416Smarkm printf("%s catching of signals\r\n", 194257416Smarkm (mode&MODE_TRAPSIG) ? "Local" : "No"); 194357416Smarkm slcstate(); 194457416Smarkm#ifdef KLUDGELINEMODE 194557416Smarkm } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 194657416Smarkm printf("Operating in obsolete linemode\r\n"); 194757416Smarkm#endif 194857416Smarkm } else { 194957416Smarkm printf("Operating in single character mode\r\n"); 195057416Smarkm if (localchars) 195157416Smarkm printf("Catching signals locally\r\n"); 195257416Smarkm } 195357416Smarkm printf("%s character echo\r\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 195457416Smarkm if (my_want_state_is_will(TELOPT_LFLOW)) 195557416Smarkm printf("%s flow control\r\n", (mode&MODE_FLOW) ? "Local" : "No"); 195657416Smarkm#if defined(ENCRYPTION) 195757416Smarkm encrypt_display(); 195857416Smarkm#endif 195957416Smarkm } 196057416Smarkm } else { 196157416Smarkm printf("No connection.\r\n"); 196257416Smarkm } 196357416Smarkm printf("Escape character is '%s'.\r\n", control(escape)); 196457416Smarkm fflush(stdout); 196557416Smarkm return 1; 196657416Smarkm} 196757416Smarkm 196857416Smarkm#ifdef SIGINFO 196957416Smarkm/* 197057416Smarkm * Function that gets called when SIGINFO is received. 197157416Smarkm */ 197278527SassarRETSIGTYPE 197357416Smarkmayt_status(int ignore) 197457416Smarkm{ 197557416Smarkm call(status, "status", "notmuch", 0); 197657416Smarkm} 197757416Smarkm#endif 197857416Smarkm 197957416Smarkmstatic Command *getcmd(char *name); 198057416Smarkm 198157416Smarkmstatic void 198257416Smarkmcmdrc(char *m1, char *m2) 198357416Smarkm{ 198457416Smarkm static char rcname[128]; 198557416Smarkm Command *c; 198657416Smarkm FILE *rcfile; 198757416Smarkm int gotmachine = 0; 198857416Smarkm int l1 = strlen(m1); 198957416Smarkm int l2 = strlen(m2); 199057416Smarkm char m1save[64]; 199157416Smarkm 199257416Smarkm if (skiprc) 199357416Smarkm return; 199457416Smarkm 199557416Smarkm strlcpy(m1save, m1, sizeof(m1save)); 199657416Smarkm m1 = m1save; 199757416Smarkm 199857416Smarkm if (rcname[0] == 0) { 199957416Smarkm char *home = getenv("HOME"); 200057416Smarkm 200157416Smarkm snprintf (rcname, sizeof(rcname), "%s/.telnetrc", 200257416Smarkm home ? home : ""); 200357416Smarkm } 200457416Smarkm 200557416Smarkm if ((rcfile = fopen(rcname, "r")) == 0) { 200657416Smarkm return; 200757416Smarkm } 200857416Smarkm 200957416Smarkm for (;;) { 201057416Smarkm if (fgets(line, sizeof(line), rcfile) == NULL) 201157416Smarkm break; 201257416Smarkm if (line[0] == 0) 201357416Smarkm break; 201457416Smarkm if (line[0] == '#') 201557416Smarkm continue; 201657416Smarkm if (gotmachine) { 201757416Smarkm if (!isspace(line[0])) 201857416Smarkm gotmachine = 0; 201957416Smarkm } 202057416Smarkm if (gotmachine == 0) { 202157416Smarkm if (isspace(line[0])) 202257416Smarkm continue; 202357416Smarkm if (strncasecmp(line, m1, l1) == 0) 202457416Smarkm strncpy(line, &line[l1], sizeof(line) - l1); 202557416Smarkm else if (strncasecmp(line, m2, l2) == 0) 202657416Smarkm strncpy(line, &line[l2], sizeof(line) - l2); 202757416Smarkm else if (strncasecmp(line, "DEFAULT", 7) == 0) 202857416Smarkm strncpy(line, &line[7], sizeof(line) - 7); 202957416Smarkm else 203057416Smarkm continue; 203157416Smarkm if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 203257416Smarkm continue; 203357416Smarkm gotmachine = 1; 203457416Smarkm } 203557416Smarkm makeargv(); 203657416Smarkm if (margv[0] == 0) 203757416Smarkm continue; 203857416Smarkm c = getcmd(margv[0]); 203957416Smarkm if (Ambiguous(c)) { 204057416Smarkm printf("?Ambiguous command: %s\r\n", margv[0]); 204157416Smarkm continue; 204257416Smarkm } 204357416Smarkm if (c == 0) { 204457416Smarkm printf("?Invalid command: %s\r\n", margv[0]); 204557416Smarkm continue; 204657416Smarkm } 204757416Smarkm /* 204857416Smarkm * This should never happen... 204957416Smarkm */ 205057416Smarkm if (c->needconnect && !connected) { 205157416Smarkm printf("?Need to be connected first for %s.\r\n", margv[0]); 205257416Smarkm continue; 205357416Smarkm } 205457416Smarkm (*c->handler)(margc, margv); 205557416Smarkm } 205657416Smarkm fclose(rcfile); 205757416Smarkm} 205857416Smarkm 205957416Smarkmint 206057416Smarkmtn(int argc, char **argv) 206157416Smarkm{ 206257416Smarkm struct servent *sp = 0; 206357416Smarkm char *cmd, *hostp = 0, *portp = 0; 206457416Smarkm char *user = 0; 206557416Smarkm int port = 0; 206657416Smarkm 206757416Smarkm /* clear the socket address prior to use */ 206857416Smarkm 206957416Smarkm if (connected) { 207057416Smarkm printf("?Already connected to %s\r\n", hostname); 207157416Smarkm return 0; 207257416Smarkm } 207357416Smarkm if (argc < 2) { 207457416Smarkm strlcpy(line, "open ", sizeof(line)); 207557416Smarkm printf("(to) "); 207657416Smarkm fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 207757416Smarkm makeargv(); 207857416Smarkm argc = margc; 207957416Smarkm argv = margv; 208057416Smarkm } 208157416Smarkm cmd = *argv; 208257416Smarkm --argc; ++argv; 208357416Smarkm while (argc) { 208457416Smarkm if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?")) 208557416Smarkm goto usage; 208657416Smarkm if (strcmp(*argv, "-l") == 0) { 208757416Smarkm --argc; ++argv; 208857416Smarkm if (argc == 0) 208957416Smarkm goto usage; 209057416Smarkm user = strdup(*argv++); 209157416Smarkm --argc; 209257416Smarkm continue; 209357416Smarkm } 209457416Smarkm if (strcmp(*argv, "-a") == 0) { 209557416Smarkm --argc; ++argv; 209657416Smarkm autologin = 1; 209757416Smarkm continue; 209857416Smarkm } 209957416Smarkm if (hostp == 0) { 210057416Smarkm hostp = *argv++; 210157416Smarkm --argc; 210257416Smarkm continue; 210357416Smarkm } 210457416Smarkm if (portp == 0) { 210557416Smarkm portp = *argv++; 210657416Smarkm --argc; 210757416Smarkm continue; 210857416Smarkm } 210957416Smarkm usage: 211057416Smarkm printf("usage: %s [-l user] [-a] host-name [port]\r\n", cmd); 211157416Smarkm return 0; 211257416Smarkm } 211357416Smarkm if (hostp == 0) 211457416Smarkm goto usage; 211557416Smarkm 211672445Sassar strlcpy (_hostname, hostp, sizeof(_hostname)); 211778527Sassar hostp = _hostname; 211872445Sassar if (hostp[0] == '@' || hostp[0] == '!') { 211972445Sassar char *p; 212072445Sassar hostname = NULL; 212172445Sassar for (p = hostp + 1; *p; p++) { 212272445Sassar if (*p == ',' || *p == '@') 212372445Sassar hostname = p; 212472445Sassar } 212572445Sassar if (hostname == NULL) { 212672445Sassar fprintf(stderr, "%s: bad source route specification\n", hostp); 212772445Sassar return 0; 212872445Sassar } 212972445Sassar *hostname++ = '\0'; 213072445Sassar } else 213172445Sassar hostname = hostp; 213272445Sassar 213357416Smarkm if (portp) { 213457416Smarkm if (*portp == '-') { 213557416Smarkm portp++; 213657416Smarkm telnetport = 1; 213757416Smarkm } else 213857416Smarkm telnetport = 0; 213957416Smarkm port = atoi(portp); 214057416Smarkm if (port == 0) { 214157416Smarkm sp = roken_getservbyname(portp, "tcp"); 214257416Smarkm if (sp) 214357416Smarkm port = sp->s_port; 214457416Smarkm else { 214557416Smarkm printf("%s: bad port number\r\n", portp); 214657416Smarkm return 0; 214757416Smarkm } 214857416Smarkm } else { 214957416Smarkm port = htons(port); 215057416Smarkm } 215157416Smarkm } else { 215257416Smarkm if (sp == 0) { 215357416Smarkm sp = roken_getservbyname("telnet", "tcp"); 215457416Smarkm if (sp == 0) { 215557416Smarkm fprintf(stderr, "telnet: tcp/telnet: unknown service\r\n"); 215657416Smarkm return 0; 215757416Smarkm } 215857416Smarkm port = sp->s_port; 215957416Smarkm } 216057416Smarkm telnetport = 1; 216157416Smarkm } 216257416Smarkm 216357416Smarkm { 216457416Smarkm struct addrinfo *ai, *a, hints; 216557416Smarkm int error; 216657416Smarkm char portstr[NI_MAXSERV]; 216757416Smarkm 216857416Smarkm memset (&hints, 0, sizeof(hints)); 216957416Smarkm hints.ai_socktype = SOCK_STREAM; 217057416Smarkm hints.ai_protocol = IPPROTO_TCP; 217157416Smarkm hints.ai_flags = AI_CANONNAME; 217257416Smarkm 217357416Smarkm snprintf (portstr, sizeof(portstr), "%u", ntohs(port)); 217457416Smarkm 217572445Sassar error = getaddrinfo (hostname, portstr, &hints, &ai); 217657416Smarkm if (error) { 217772445Sassar fprintf (stderr, "%s: %s\r\n", hostname, gai_strerror (error)); 217857416Smarkm return 0; 217957416Smarkm } 218057416Smarkm 218157416Smarkm for (a = ai; a != NULL && connected == 0; a = a->ai_next) { 218257416Smarkm char addrstr[256]; 218357416Smarkm 218457416Smarkm if (a->ai_canonname != NULL) 218557416Smarkm strlcpy (_hostname, a->ai_canonname, sizeof(_hostname)); 218657416Smarkm 218757416Smarkm if (getnameinfo (a->ai_addr, a->ai_addrlen, 218857416Smarkm addrstr, sizeof(addrstr), 218957416Smarkm NULL, 0, NI_NUMERICHOST) != 0) 219057416Smarkm strlcpy (addrstr, "unknown address", sizeof(addrstr)); 219157416Smarkm 219257416Smarkm printf("Trying %s...\r\n", addrstr); 219357416Smarkm 219457416Smarkm net = socket (a->ai_family, a->ai_socktype, a->ai_protocol); 219557416Smarkm if (net < 0) { 219672445Sassar warn ("socket"); 219757416Smarkm continue; 219857416Smarkm } 219972445Sassar 220057416Smarkm#if defined(IP_OPTIONS) && defined(IPPROTO_IP) && defined(HAVE_SETSOCKOPT) 220172445Sassar if (hostp[0] == '@' || hostp[0] == '!') { 220272445Sassar char *srp = 0; 220372445Sassar int srlen; 220472445Sassar int proto, opt; 220572445Sassar 220672445Sassar if ((srlen = sourceroute(a, hostp, &srp, &proto, &opt)) < 0) { 220772445Sassar (void) NetClose(net); 220872445Sassar net = -1; 220972445Sassar continue; 221072445Sassar } 221172445Sassar if (srp && setsockopt(net, proto, opt, srp, srlen) < 0) 221272445Sassar perror("setsockopt (source route)"); 221372445Sassar } 221457416Smarkm#endif 221572445Sassar 221657416Smarkm#if defined(IPPROTO_IP) && defined(IP_TOS) 221757419Smarkm if (a->ai_family == AF_INET) { 221857416Smarkm# if defined(HAVE_GETTOSBYNAME) 221957416Smarkm struct tosent *tp; 222057416Smarkm if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 222157416Smarkm tos = tp->t_tos; 222257416Smarkm# endif 222357416Smarkm if (tos < 0) 222457416Smarkm tos = 020; /* Low Delay bit */ 222557416Smarkm if (tos 222657416Smarkm && (setsockopt(net, IPPROTO_IP, IP_TOS, 222757416Smarkm (void *)&tos, sizeof(int)) < 0) 222857416Smarkm && (errno != ENOPROTOOPT)) 222957416Smarkm perror("telnet: setsockopt (IP_TOS) (ignored)"); 223057416Smarkm } 223157416Smarkm#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 223257416Smarkm if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 223357416Smarkm perror("setsockopt (SO_DEBUG)"); 223457416Smarkm } 223557416Smarkm 223657416Smarkm if (connect (net, a->ai_addr, a->ai_addrlen) < 0) { 223757416Smarkm fprintf (stderr, "telnet: connect to address %s: %s\n", 223857416Smarkm addrstr, strerror(errno)); 223957416Smarkm NetClose(net); 224057416Smarkm if (a->ai_next != NULL) { 224157416Smarkm continue; 224257416Smarkm } else { 224357416Smarkm freeaddrinfo (ai); 224457416Smarkm return 0; 224557416Smarkm } 224657416Smarkm } 224757416Smarkm ++connected; 224857416Smarkm#if defined(AUTHENTICATION) || defined(ENCRYPTION) 224957416Smarkm auth_encrypt_connect(connected); 225057416Smarkm#endif 225157416Smarkm } 225272445Sassar freeaddrinfo (ai); 225372445Sassar if (connected == 0) 225472445Sassar return 0; 225557416Smarkm } 225657416Smarkm cmdrc(hostp, hostname); 225757416Smarkm if (autologin && user == NULL) 225857416Smarkm user = (char *)get_default_username (); 225957416Smarkm if (user) { 226057416Smarkm env_define((unsigned char *)"USER", (unsigned char *)user); 226157416Smarkm env_export((unsigned char *)"USER"); 226257416Smarkm } 226357416Smarkm call(status, "status", "notmuch", 0); 226457416Smarkm if (setjmp(peerdied) == 0) 226557416Smarkm my_telnet((char *)user); 226657416Smarkm NetClose(net); 226757416Smarkm ExitString("Connection closed by foreign host.\r\n",1); 226857416Smarkm /*NOTREACHED*/ 226957416Smarkm return 0; 227057416Smarkm} 227157416Smarkm 227257416Smarkm#define HELPINDENT ((int)sizeof ("connect")) 227357416Smarkm 227457416Smarkmstatic char 227557416Smarkm openhelp[] = "connect to a site", 227657416Smarkm closehelp[] = "close current connection", 227757416Smarkm logouthelp[] = "forcibly logout remote user and close the connection", 227857416Smarkm quithelp[] = "exit telnet", 227957416Smarkm statushelp[] = "print status information", 228057416Smarkm helphelp[] = "print help information", 228157416Smarkm sendhelp[] = "transmit special characters ('send ?' for more)", 228257416Smarkm sethelp[] = "set operating parameters ('set ?' for more)", 228357416Smarkm unsethelp[] = "unset operating parameters ('unset ?' for more)", 228457416Smarkm togglestring[] ="toggle operating parameters ('toggle ?' for more)", 228557416Smarkm slchelp[] = "change state of special charaters ('slc ?' for more)", 228657416Smarkm displayhelp[] = "display operating parameters", 228757416Smarkm#if defined(AUTHENTICATION) 228857416Smarkm authhelp[] = "turn on (off) authentication ('auth ?' for more)", 228957416Smarkm#endif 229057416Smarkm#if defined(ENCRYPTION) 229157416Smarkm encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)", 229257416Smarkm#endif 229357416Smarkm zhelp[] = "suspend telnet", 229457416Smarkm shellhelp[] = "invoke a subshell", 229557416Smarkm envhelp[] = "change environment variables ('environ ?' for more)", 229657416Smarkm modestring[] = "try to enter line or character mode ('mode ?' for more)"; 229757416Smarkm 229857416Smarkmstatic int help(int argc, char **argv); 229957416Smarkm 230057416Smarkmstatic Command cmdtab[] = { 230157416Smarkm { "close", closehelp, bye, 1 }, 230257416Smarkm { "logout", logouthelp, logout, 1 }, 230357416Smarkm { "display", displayhelp, display, 0 }, 230457416Smarkm { "mode", modestring, modecmd, 0 }, 230557416Smarkm { "open", openhelp, tn, 0 }, 230657416Smarkm { "quit", quithelp, quit, 0 }, 230757416Smarkm { "send", sendhelp, sendcmd, 0 }, 230857416Smarkm { "set", sethelp, setcmd, 0 }, 230957416Smarkm { "unset", unsethelp, unsetcmd, 0 }, 231057416Smarkm { "status", statushelp, status, 0 }, 231157416Smarkm { "toggle", togglestring, toggle, 0 }, 231257416Smarkm { "slc", slchelp, slccmd, 0 }, 231357416Smarkm#if defined(AUTHENTICATION) 231457416Smarkm { "auth", authhelp, auth_cmd, 0 }, 231557416Smarkm#endif 231657416Smarkm#if defined(ENCRYPTION) 231757416Smarkm { "encrypt", encrypthelp, encrypt_cmd, 0 }, 231857416Smarkm#endif 231957416Smarkm { "z", zhelp, telnetsuspend, 0 }, 232057416Smarkm { "!", shellhelp, shell, 0 }, 232157416Smarkm { "environ", envhelp, env_cmd, 0 }, 232257416Smarkm { "?", helphelp, help, 0 }, 232357416Smarkm { 0, 0, 0, 0 } 232457416Smarkm}; 232557416Smarkm 232657416Smarkmstatic char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; 232757416Smarkmstatic char escapehelp[] = "deprecated command -- use 'set escape' instead"; 232857416Smarkm 232957416Smarkmstatic Command cmdtab2[] = { 233057416Smarkm { "help", 0, help, 0 }, 233157416Smarkm { "escape", escapehelp, setescape, 0 }, 233257416Smarkm { "crmod", crmodhelp, togcrmod, 0 }, 233357416Smarkm { 0, 0, 0, 0 } 233457416Smarkm}; 233557416Smarkm 233657416Smarkm 233757416Smarkm/* 233857416Smarkm * Call routine with argc, argv set from args (terminated by 0). 233957416Smarkm */ 234057416Smarkm 234157416Smarkmstatic int 234257416Smarkmcall(intrtn_t routine, ...) 234357416Smarkm{ 234457416Smarkm va_list ap; 234557416Smarkm char *args[100]; 234657416Smarkm int argno = 0; 234757416Smarkm 234857416Smarkm va_start(ap, routine); 234957416Smarkm while ((args[argno++] = va_arg(ap, char *)) != 0); 235057416Smarkm va_end(ap); 235157416Smarkm return (*routine)(argno-1, args); 235257416Smarkm} 235357416Smarkm 235457416Smarkm 235557416Smarkmstatic Command 235657416Smarkm*getcmd(char *name) 235757416Smarkm{ 235857416Smarkm Command *cm; 235957416Smarkm 236057416Smarkm if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command)))) 236157416Smarkm return cm; 236257416Smarkm return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 236357416Smarkm} 236457416Smarkm 236557416Smarkmvoid 236657416Smarkmcommand(int top, char *tbuf, int cnt) 236757416Smarkm{ 236857416Smarkm Command *c; 236957416Smarkm 237057416Smarkm setcommandmode(); 237157416Smarkm if (!top) { 237257416Smarkm putchar('\n'); 237357416Smarkm } else { 237457416Smarkm signal(SIGINT, SIG_DFL); 237557416Smarkm signal(SIGQUIT, SIG_DFL); 237657416Smarkm } 237757416Smarkm for (;;) { 237857416Smarkm if (rlogin == _POSIX_VDISABLE) 237957416Smarkm printf("%s> ", prompt); 238057416Smarkm if (tbuf) { 238157416Smarkm char *cp; 238257416Smarkm cp = line; 238357416Smarkm while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 238457416Smarkm cnt--; 238557416Smarkm tbuf = 0; 238657416Smarkm if (cp == line || *--cp != '\n' || cp == line) 238757416Smarkm goto getline; 238857416Smarkm *cp = '\0'; 238957416Smarkm if (rlogin == _POSIX_VDISABLE) 239057416Smarkm printf("%s\r\n", line); 239157416Smarkm } else { 239257416Smarkm getline: 239357416Smarkm if (rlogin != _POSIX_VDISABLE) 239457416Smarkm printf("%s> ", prompt); 239557416Smarkm if (fgets(line, sizeof(line), stdin) == NULL) { 239657416Smarkm if (feof(stdin) || ferror(stdin)) { 239757416Smarkm quit(); 239857416Smarkm /*NOTREACHED*/ 239957416Smarkm } 240057416Smarkm break; 240157416Smarkm } 240257416Smarkm } 240357416Smarkm if (line[0] == 0) 240457416Smarkm break; 240557416Smarkm makeargv(); 240657416Smarkm if (margv[0] == 0) { 240757416Smarkm break; 240857416Smarkm } 240957416Smarkm c = getcmd(margv[0]); 241057416Smarkm if (Ambiguous(c)) { 241157416Smarkm printf("?Ambiguous command\r\n"); 241257416Smarkm continue; 241357416Smarkm } 241457416Smarkm if (c == 0) { 241557416Smarkm printf("?Invalid command\r\n"); 241657416Smarkm continue; 241757416Smarkm } 241857416Smarkm if (c->needconnect && !connected) { 241957416Smarkm printf("?Need to be connected first.\r\n"); 242057416Smarkm continue; 242157416Smarkm } 242257416Smarkm if ((*c->handler)(margc, margv)) { 242357416Smarkm break; 242457416Smarkm } 242557416Smarkm } 242657416Smarkm if (!top) { 242757416Smarkm if (!connected) { 242857416Smarkm longjmp(toplevel, 1); 242957416Smarkm /*NOTREACHED*/ 243057416Smarkm } 243157416Smarkm setconnmode(0); 243257416Smarkm } 243357416Smarkm} 243457416Smarkm 243557416Smarkm/* 243657416Smarkm * Help command. 243757416Smarkm */ 243857416Smarkmstatic int 243957416Smarkmhelp(int argc, char **argv) 244057416Smarkm{ 244157416Smarkm Command *c; 244257416Smarkm 244357416Smarkm if (argc == 1) { 244457416Smarkm printf("Commands may be abbreviated. Commands are:\r\n\r\n"); 244557416Smarkm for (c = cmdtab; c->name; c++) 244657416Smarkm if (c->help) { 244757416Smarkm printf("%-*s\t%s\r\n", HELPINDENT, c->name, 244857416Smarkm c->help); 244957416Smarkm } 245057416Smarkm return 0; 245157416Smarkm } 245257416Smarkm while (--argc > 0) { 245357416Smarkm char *arg; 245457416Smarkm arg = *++argv; 245557416Smarkm c = getcmd(arg); 245657416Smarkm if (Ambiguous(c)) 245757416Smarkm printf("?Ambiguous help command %s\r\n", arg); 245857416Smarkm else if (c == (Command *)0) 245957416Smarkm printf("?Invalid help command %s\r\n", arg); 246057416Smarkm else 246157416Smarkm printf("%s\r\n", c->help); 246257416Smarkm } 246357416Smarkm return 0; 246457416Smarkm} 246557416Smarkm 246657416Smarkm 246757416Smarkm#if defined(IP_OPTIONS) && defined(IPPROTO_IP) 246857416Smarkm 246957416Smarkm/* 247057416Smarkm * Source route is handed in as 247172445Sassar * [!]@hop1@hop2...@dst 247257416Smarkm * 247372445Sassar * If the leading ! is present, it is a strict source route, otherwise it is 247472445Sassar * assmed to be a loose source route. Note that leading ! is effective 247572445Sassar * only for IPv4 case. 247672445Sassar * 247757416Smarkm * We fill in the source route option as 247857416Smarkm * hop1,hop2,hop3...dest 247957416Smarkm * and return a pointer to hop1, which will 248057416Smarkm * be the address to connect() to. 248157416Smarkm * 248257416Smarkm * Arguments: 248372445Sassar * ai: The address (by struct addrinfo) for the final destination. 248457416Smarkm * 248572445Sassar * arg: Pointer to route list to decipher 248657416Smarkm * 248772445Sassar * cpp: Pointer to a pointer, so that sourceroute() can return 248872445Sassar * the address of result buffer (statically alloc'ed). 248972445Sassar * 249072445Sassar * protop/optp: 249172445Sassar * Pointer to an integer. The pointed variable 249257416Smarkm * lenp: pointer to an integer that contains the 249357416Smarkm * length of *cpp if *cpp != NULL. 249457416Smarkm * 249557416Smarkm * Return values: 249657416Smarkm * 249772445Sassar * Returns the length of the option pointed to by *cpp. If the 249857416Smarkm * return value is -1, there was a syntax error in the 249972445Sassar * option, either arg contained unknown characters or too many hosts, 250072445Sassar * or hostname cannot be resolved. 250157416Smarkm * 250272445Sassar * The caller needs to pass return value (len), *cpp, *protop and *optp 250372445Sassar * to setsockopt(2). 250457416Smarkm * 250572445Sassar * *cpp: Points to the result buffer. The region is statically 250672445Sassar * allocated by the function. 250757416Smarkm * 250872445Sassar * *protop: 250972445Sassar * protocol # to be passed to setsockopt(2). 251072445Sassar * 251172445Sassar * *optp: option # to be passed to setsockopt(2). 251272445Sassar * 251357416Smarkm */ 251472445Sassarint 251572445Sassarsourceroute(struct addrinfo *ai, 251672445Sassar char *arg, 251772445Sassar char **cpp, 251872445Sassar int *protop, 251972445Sassar int *optp) 252057416Smarkm{ 252172445Sassar char *cp, *cp2, *lsrp, *lsrep; 252272445Sassar struct addrinfo hints, *res; 252372445Sassar int len, error; 252472445Sassar struct sockaddr_in *sin; 252572445Sassar register char c; 252657416Smarkm static char lsr[44]; 252772445Sassar#ifdef INET6 252872445Sassar struct cmsghdr *cmsg; 252972445Sassar struct sockaddr_in6 *sin6; 253072445Sassar static char rhbuf[1024]; 253172445Sassar#endif 253257416Smarkm 253357416Smarkm /* 253472445Sassar * Verify the arguments. 253557416Smarkm */ 253672445Sassar if (cpp == NULL) 253772445Sassar return -1; 253857416Smarkm 253957416Smarkm cp = arg; 254057416Smarkm 254172445Sassar *cpp = NULL; 254272445Sassar switch (ai->ai_family) { 254372445Sassar case AF_INET: 254472445Sassar lsrp = lsr; 254572445Sassar lsrep = lsrp + sizeof(lsr); 254672445Sassar 254772445Sassar /* 254872445Sassar * Next, decide whether we have a loose source 254972445Sassar * route or a strict source route, and fill in 255072445Sassar * the begining of the option. 255172445Sassar */ 255272445Sassar if (*cp == '!') { 255372445Sassar cp++; 255472445Sassar *lsrp++ = IPOPT_SSRR; 255572445Sassar } else 255672445Sassar *lsrp++ = IPOPT_LSRR; 255772445Sassar if (*cp != '@') 255872445Sassar return -1; 255972445Sassar lsrp++; /* skip over length, we'll fill it in later */ 256072445Sassar *lsrp++ = 4; 256157416Smarkm cp++; 256272445Sassar *protop = IPPROTO_IP; 256372445Sassar *optp = IP_OPTIONS; 256472445Sassar break; 256572445Sassar#ifdef INET6 256672445Sassar case AF_INET6: 256772445Sassar/* this needs to be updated for rfc2292bis */ 256872445Sassar#ifdef IPV6_PKTOPTIONS 256972445Sassar cmsg = inet6_rthdr_init(rhbuf, IPV6_RTHDR_TYPE_0); 257072445Sassar if (*cp != '@') 257172445Sassar return -1; 257272445Sassar cp++; 257372445Sassar *protop = IPPROTO_IPV6; 257472445Sassar *optp = IPV6_PKTOPTIONS; 257572445Sassar break; 257672445Sassar#else 257772445Sassar return -1; 257872445Sassar#endif 257972445Sassar#endif 258072445Sassar default: 258172445Sassar return -1; 258272445Sassar } 258357416Smarkm 258472445Sassar memset(&hints, 0, sizeof(hints)); 258572445Sassar hints.ai_family = ai->ai_family; 258672445Sassar hints.ai_socktype = SOCK_STREAM; 258757416Smarkm 258857416Smarkm for (c = 0;;) { 258957416Smarkm if (c == ':') 259057416Smarkm cp2 = 0; 259172445Sassar else for (cp2 = cp; (c = *cp2) != '\0'; cp2++) { 259257416Smarkm if (c == ',') { 259357416Smarkm *cp2++ = '\0'; 259457416Smarkm if (*cp2 == '@') 259557416Smarkm cp2++; 259657416Smarkm } else if (c == '@') { 259757416Smarkm *cp2++ = '\0'; 259872445Sassar } 259972445Sassar#if 0 /*colon conflicts with IPv6 address*/ 260072445Sassar else if (c == ':') { 260157416Smarkm *cp2++ = '\0'; 260272445Sassar } 260372445Sassar#endif 260472445Sassar else 260557416Smarkm continue; 260657416Smarkm break; 260757416Smarkm } 260857416Smarkm if (!c) 260957416Smarkm cp2 = 0; 261057416Smarkm 261172445Sassar error = getaddrinfo(cp, NULL, &hints, &res); 261272445Sassar if (error) { 261372445Sassar fprintf(stderr, "%s: %s\n", cp, gai_strerror(error)); 261472445Sassar return -1; 261557416Smarkm } 261672445Sassar if (ai->ai_family != res->ai_family) { 261772445Sassar freeaddrinfo(res); 261872445Sassar return -1; 261972445Sassar } 262072445Sassar if (ai->ai_family == AF_INET) { 262172445Sassar /* 262272445Sassar * Check to make sure there is space for address 262372445Sassar */ 262472445Sassar if (lsrp + 4 > lsrep) { 262572445Sassar freeaddrinfo(res); 262672445Sassar return -1; 262772445Sassar } 262872445Sassar sin = (struct sockaddr_in *)res->ai_addr; 262972445Sassar memcpy(lsrp, &sin->sin_addr, sizeof(struct in_addr)); 263072445Sassar lsrp += sizeof(struct in_addr); 263172445Sassar } 263272445Sassar#ifdef INET6 263372445Sassar else if (ai->ai_family == AF_INET6) { 263472445Sassar sin6 = (struct sockaddr_in6 *)res->ai_addr; 263572445Sassar inet6_rthdr_add(cmsg, &sin6->sin6_addr, 263672445Sassar IPV6_RTHDR_LOOSE); 263772445Sassar } 263872445Sassar#endif 263972445Sassar else { 264072445Sassar freeaddrinfo(res); 264172445Sassar return -1; 264272445Sassar } 264372445Sassar freeaddrinfo(res); 264457416Smarkm if (cp2) 264557416Smarkm cp = cp2; 264657416Smarkm else 264757416Smarkm break; 264872445Sassar } 264972445Sassar if (ai->ai_family == AF_INET) { 265072445Sassar /* record the last hop */ 265157416Smarkm if (lsrp + 4 > lsrep) 265272445Sassar return -1; 265372445Sassar sin = (struct sockaddr_in *)ai->ai_addr; 265472445Sassar memcpy(lsrp, &sin->sin_addr, sizeof(struct in_addr)); 265572445Sassar lsrp += sizeof(struct in_addr); 265672445Sassar#ifndef sysV88 265772445Sassar lsr[IPOPT_OLEN] = lsrp - lsr; 265872445Sassar if (lsr[IPOPT_OLEN] <= 7 || lsr[IPOPT_OLEN] > 40) 265972445Sassar return -1; 266072445Sassar *lsrp++ = IPOPT_NOP; /*32bit word align*/ 266172445Sassar len = lsrp - lsr; 266272445Sassar *cpp = lsr; 266372445Sassar#else 266472445Sassar ipopt.io_len = lsrp - lsr; 266572445Sassar if (ipopt.io_len <= 5) /*is 3 better?*/ 266672445Sassar return -1; 266772445Sassar *cpp = (char 8)&ipopt; 266872445Sassar#endif 266957416Smarkm } 267072445Sassar#ifdef INET6 267172445Sassar else if (ai->ai_family == AF_INET6) { 267272445Sassar inet6_rthdr_lasthop(cmsg, IPV6_RTHDR_LOOSE); 267372445Sassar len = cmsg->cmsg_len; 267472445Sassar *cpp = rhbuf; 267557416Smarkm } 267672445Sassar#endif 267772445Sassar else 267872445Sassar return -1; 267972445Sassar return len; 268057416Smarkm} 268157416Smarkm#endif 2682