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 36233294SstasRCSID("$Id$"); 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; 77178825Sdfr while (isspace((unsigned char)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; 99178825Sdfr } else if (isspace((unsigned char)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 45657416Smarkmstatic int 45757416Smarkmtogcrlf() 45857416Smarkm{ 45957416Smarkm if (crlf) { 46057416Smarkm printf("Will send carriage returns as telnet <CR><LF>.\r\n"); 46157416Smarkm } else { 46257416Smarkm printf("Will send carriage returns as telnet <CR><NUL>.\r\n"); 46357416Smarkm } 46457416Smarkm return 1; 46557416Smarkm} 46657416Smarkm 46757416Smarkmint binmode; 46857416Smarkm 46957416Smarkmstatic int 47057416Smarkmtogbinary(int val) 47157416Smarkm{ 47257416Smarkm donebinarytoggle = 1; 47357416Smarkm 47457416Smarkm if (val >= 0) { 47557416Smarkm binmode = val; 47657416Smarkm } else { 47757416Smarkm if (my_want_state_is_will(TELOPT_BINARY) && 47857416Smarkm my_want_state_is_do(TELOPT_BINARY)) { 47957416Smarkm binmode = 1; 48057416Smarkm } else if (my_want_state_is_wont(TELOPT_BINARY) && 48157416Smarkm my_want_state_is_dont(TELOPT_BINARY)) { 48257416Smarkm binmode = 0; 48357416Smarkm } 48457416Smarkm val = binmode ? 0 : 1; 48557416Smarkm } 48657416Smarkm 48757416Smarkm if (val == 1) { 48857416Smarkm if (my_want_state_is_will(TELOPT_BINARY) && 48957416Smarkm my_want_state_is_do(TELOPT_BINARY)) { 49057416Smarkm printf("Already operating in binary mode with remote host.\r\n"); 49157416Smarkm } else { 49257416Smarkm printf("Negotiating binary mode with remote host.\r\n"); 49357416Smarkm tel_enter_binary(3); 49457416Smarkm } 49557416Smarkm } else { 49657416Smarkm if (my_want_state_is_wont(TELOPT_BINARY) && 49757416Smarkm my_want_state_is_dont(TELOPT_BINARY)) { 49857416Smarkm printf("Already in network ascii mode with remote host.\r\n"); 49957416Smarkm } else { 50057416Smarkm printf("Negotiating network ascii mode with remote host.\r\n"); 50157416Smarkm tel_leave_binary(3); 50257416Smarkm } 50357416Smarkm } 50457416Smarkm return 1; 50557416Smarkm} 50657416Smarkm 50757416Smarkmstatic int 50857416Smarkmtogrbinary(int val) 50957416Smarkm{ 51057416Smarkm donebinarytoggle = 1; 51157416Smarkm 51257416Smarkm if (val == -1) 51357416Smarkm val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1; 51457416Smarkm 51557416Smarkm if (val == 1) { 51657416Smarkm if (my_want_state_is_do(TELOPT_BINARY)) { 51757416Smarkm printf("Already receiving in binary mode.\r\n"); 51857416Smarkm } else { 51957416Smarkm printf("Negotiating binary mode on input.\r\n"); 52057416Smarkm tel_enter_binary(1); 52157416Smarkm } 52257416Smarkm } else { 52357416Smarkm if (my_want_state_is_dont(TELOPT_BINARY)) { 52457416Smarkm printf("Already receiving in network ascii mode.\r\n"); 52557416Smarkm } else { 52657416Smarkm printf("Negotiating network ascii mode on input.\r\n"); 52757416Smarkm tel_leave_binary(1); 52857416Smarkm } 52957416Smarkm } 53057416Smarkm return 1; 53157416Smarkm} 53257416Smarkm 53357416Smarkmstatic int 53457416Smarkmtogxbinary(int val) 53557416Smarkm{ 53657416Smarkm donebinarytoggle = 1; 53757416Smarkm 53857416Smarkm if (val == -1) 53957416Smarkm val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1; 54057416Smarkm 54157416Smarkm if (val == 1) { 54257416Smarkm if (my_want_state_is_will(TELOPT_BINARY)) { 54357416Smarkm printf("Already transmitting in binary mode.\r\n"); 54457416Smarkm } else { 54557416Smarkm printf("Negotiating binary mode on output.\r\n"); 54657416Smarkm tel_enter_binary(2); 54757416Smarkm } 54857416Smarkm } else { 54957416Smarkm if (my_want_state_is_wont(TELOPT_BINARY)) { 55057416Smarkm printf("Already transmitting in network ascii mode.\r\n"); 55157416Smarkm } else { 55257416Smarkm printf("Negotiating network ascii mode on output.\r\n"); 55357416Smarkm tel_leave_binary(2); 55457416Smarkm } 55557416Smarkm } 55657416Smarkm return 1; 55757416Smarkm} 55857416Smarkm 55957416Smarkm 56057416Smarkmstatic int togglehelp (void); 56157416Smarkm#if defined(AUTHENTICATION) 56257416Smarkmextern int auth_togdebug (int); 56357416Smarkm#endif 56457416Smarkm#if defined(ENCRYPTION) 56557416Smarkmextern int EncryptAutoEnc (int); 56657416Smarkmextern int EncryptAutoDec (int); 56757416Smarkmextern int EncryptDebug (int); 56857416Smarkmextern int EncryptVerbose (int); 56957416Smarkm#endif 57057416Smarkm 57157416Smarkmstruct togglelist { 57257416Smarkm char *name; /* name of toggle */ 57357416Smarkm char *help; /* help message */ 57457416Smarkm int (*handler)(); /* routine to do actual setting */ 57557416Smarkm int *variable; 57657416Smarkm char *actionexplanation; 57757416Smarkm}; 57857416Smarkm 57957416Smarkmstatic struct togglelist Togglelist[] = { 58057416Smarkm { "autoflush", 58157416Smarkm "flushing of output when sending interrupt characters", 58257416Smarkm 0, 58357416Smarkm &autoflush, 58457416Smarkm "flush output when sending interrupt characters" }, 58557416Smarkm { "autosynch", 58657416Smarkm "automatic sending of interrupt characters in urgent mode", 58757416Smarkm 0, 58857416Smarkm &autosynch, 58957416Smarkm "send interrupt characters in urgent mode" }, 59057416Smarkm#if defined(AUTHENTICATION) 59157416Smarkm { "autologin", 59257416Smarkm "automatic sending of login and/or authentication info", 59357416Smarkm 0, 59457416Smarkm &autologin, 59557416Smarkm "send login name and/or authentication information" }, 59657416Smarkm { "authdebug", 597102644Snectar "authentication debugging", 59857416Smarkm auth_togdebug, 59957416Smarkm 0, 60057416Smarkm "print authentication debugging information" }, 60157416Smarkm#endif 60257416Smarkm#if defined(ENCRYPTION) 60357416Smarkm { "autoencrypt", 60457416Smarkm "automatic encryption of data stream", 60557416Smarkm EncryptAutoEnc, 60657416Smarkm 0, 60757416Smarkm "automatically encrypt output" }, 60857416Smarkm { "autodecrypt", 60957416Smarkm "automatic decryption of data stream", 61057416Smarkm EncryptAutoDec, 61157416Smarkm 0, 61257416Smarkm "automatically decrypt input" }, 61357416Smarkm { "verbose_encrypt", 614102644Snectar "verbose encryption output", 61557416Smarkm EncryptVerbose, 61657416Smarkm 0, 61757416Smarkm "print verbose encryption output" }, 61857416Smarkm { "encdebug", 619102644Snectar "encryption debugging", 62057416Smarkm EncryptDebug, 62157416Smarkm 0, 62257416Smarkm "print encryption debugging information" }, 62357416Smarkm#endif 624102644Snectar#if defined(KRB5) 625102644Snectar { "forward", 626102644Snectar "credentials forwarding", 627102644Snectar kerberos5_set_forward, 628102644Snectar 0, 629102644Snectar "forward credentials" }, 630102644Snectar { "forwardable", 631102644Snectar "forwardable flag of forwarded credentials", 632102644Snectar kerberos5_set_forwardable, 633102644Snectar 0, 634102644Snectar "forward forwardable credentials" }, 635102644Snectar#endif 636102644Snectar { "skiprc", 63757416Smarkm "don't read ~/.telnetrc file", 63857416Smarkm 0, 63957416Smarkm &skiprc, 64057416Smarkm "skip reading of ~/.telnetrc file" }, 64157416Smarkm { "binary", 64257416Smarkm "sending and receiving of binary data", 64357416Smarkm togbinary, 64457416Smarkm 0, 64557416Smarkm 0 }, 64657416Smarkm { "inbinary", 64757416Smarkm "receiving of binary data", 64857416Smarkm togrbinary, 64957416Smarkm 0, 65057416Smarkm 0 }, 65157416Smarkm { "outbinary", 65257416Smarkm "sending of binary data", 65357416Smarkm togxbinary, 65457416Smarkm 0, 65557416Smarkm 0 }, 65657416Smarkm { "crlf", 65757416Smarkm "sending carriage returns as telnet <CR><LF>", 65857416Smarkm togcrlf, 65957416Smarkm &crlf, 66057416Smarkm 0 }, 66157416Smarkm { "crmod", 66257416Smarkm "mapping of received carriage returns", 66357416Smarkm 0, 66457416Smarkm &crmod, 66557416Smarkm "map carriage return on output" }, 66657416Smarkm { "localchars", 66757416Smarkm "local recognition of certain control characters", 66857416Smarkm lclchars, 66957416Smarkm &localchars, 67057416Smarkm "recognize certain control characters" }, 67157416Smarkm { " ", "", 0 }, /* empty line */ 67257416Smarkm { "debug", 67357416Smarkm "debugging", 67457416Smarkm togdebug, 67557416Smarkm &debug, 67657416Smarkm "turn on socket level debugging" }, 67757416Smarkm { "netdata", 67857416Smarkm "printing of hexadecimal network data (debugging)", 67957416Smarkm 0, 68057416Smarkm &netdata, 68157416Smarkm "print hexadecimal representation of network traffic" }, 68257416Smarkm { "prettydump", 68357416Smarkm "output of \"netdata\" to user readable format (debugging)", 68457416Smarkm 0, 68557416Smarkm &prettydump, 68657416Smarkm "print user readable output for \"netdata\"" }, 68757416Smarkm { "options", 68857416Smarkm "viewing of options processing (debugging)", 68957416Smarkm 0, 69057416Smarkm &showoptions, 69157416Smarkm "show option processing" }, 69257416Smarkm { "termdata", 693102644Snectar "printing of hexadecimal terminal data (debugging)", 69457416Smarkm 0, 69557416Smarkm &termdata, 69657416Smarkm "print hexadecimal representation of terminal traffic" }, 69757416Smarkm { "?", 69857416Smarkm 0, 69957416Smarkm togglehelp }, 70057416Smarkm { "help", 70157416Smarkm 0, 70257416Smarkm togglehelp }, 70357416Smarkm { 0 } 70457416Smarkm}; 70557416Smarkm 70657416Smarkmstatic int 70757416Smarkmtogglehelp() 70857416Smarkm{ 70957416Smarkm struct togglelist *c; 71057416Smarkm 71157416Smarkm for (c = Togglelist; c->name; c++) { 71257416Smarkm if (c->help) { 71357416Smarkm if (*c->help) 71457416Smarkm printf("%-15s toggle %s\r\n", c->name, c->help); 71557416Smarkm else 71657416Smarkm printf("\r\n"); 71757416Smarkm } 71857416Smarkm } 71957416Smarkm printf("\r\n"); 72057416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 72157416Smarkm return 0; 72257416Smarkm} 72357416Smarkm 72457416Smarkmstatic void 72557416Smarkmsettogglehelp(int set) 72657416Smarkm{ 72757416Smarkm struct togglelist *c; 72857416Smarkm 72957416Smarkm for (c = Togglelist; c->name; c++) { 73057416Smarkm if (c->help) { 73157416Smarkm if (*c->help) 73257416Smarkm printf("%-15s %s %s\r\n", c->name, set ? "enable" : "disable", 73357416Smarkm c->help); 73457416Smarkm else 73557416Smarkm printf("\r\n"); 73657416Smarkm } 73757416Smarkm } 73857416Smarkm} 73957416Smarkm 74057416Smarkm#define GETTOGGLE(name) (struct togglelist *) \ 74157416Smarkm genget(name, (char **) Togglelist, sizeof(struct togglelist)) 74257416Smarkm 74357416Smarkmstatic int 74457416Smarkmtoggle(int argc, char *argv[]) 74557416Smarkm{ 74657416Smarkm int retval = 1; 74757416Smarkm char *name; 74857416Smarkm struct togglelist *c; 74957416Smarkm 75057416Smarkm if (argc < 2) { 75157416Smarkm fprintf(stderr, 75257416Smarkm "Need an argument to 'toggle' command. 'toggle ?' for help.\r\n"); 75357416Smarkm return 0; 75457416Smarkm } 75557416Smarkm argc--; 75657416Smarkm argv++; 75757416Smarkm while (argc--) { 75857416Smarkm name = *argv++; 75957416Smarkm c = GETTOGGLE(name); 76057416Smarkm if (Ambiguous(c)) { 76157416Smarkm fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\r\n", 76257416Smarkm name); 76357416Smarkm return 0; 76457416Smarkm } else if (c == 0) { 76557416Smarkm fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\r\n", 76657416Smarkm name); 76757416Smarkm return 0; 76857416Smarkm } else { 76957416Smarkm if (c->variable) { 77057416Smarkm *c->variable = !*c->variable; /* invert it */ 77157416Smarkm if (c->actionexplanation) { 77257416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 77357416Smarkm c->actionexplanation); 77457416Smarkm } 77557416Smarkm } 77657416Smarkm if (c->handler) { 77757416Smarkm retval &= (*c->handler)(-1); 77857416Smarkm } 77957416Smarkm } 78057416Smarkm } 78157416Smarkm return retval; 78257416Smarkm} 78357416Smarkm 78457416Smarkm/* 78557416Smarkm * The following perform the "set" command. 78657416Smarkm */ 78757416Smarkm 78857416Smarkmstruct termios new_tc = { 0 }; 78957416Smarkm 79057416Smarkmstruct setlist { 79157416Smarkm char *name; /* name */ 79257416Smarkm char *help; /* help information */ 79357416Smarkm void (*handler)(); 79457416Smarkm cc_t *charp; /* where it is located at */ 79557416Smarkm}; 79657416Smarkm 79757416Smarkmstatic struct setlist Setlist[] = { 79857416Smarkm#ifdef KLUDGELINEMODE 79957416Smarkm { "echo", "character to toggle local echoing on/off", 0, &echoc }, 80057416Smarkm#endif 80157416Smarkm { "escape", "character to escape back to telnet command mode", 0, &escape }, 80257416Smarkm { "rlogin", "rlogin escape character", 0, &rlogin }, 80357416Smarkm { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 80457416Smarkm { " ", "" }, 80557416Smarkm { " ", "The following need 'localchars' to be toggled true", 0, 0 }, 80657416Smarkm { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar }, 80757416Smarkm { "interrupt", "character to cause an Interrupt Process", 0, &termIntChar }, 80857416Smarkm { "quit", "character to cause an Abort process", 0, &termQuitChar }, 80957416Smarkm { "eof", "character to cause an EOF ", 0, &termEofChar }, 81057416Smarkm { " ", "" }, 81157416Smarkm { " ", "The following are for local editing in linemode", 0, 0 }, 81257416Smarkm { "erase", "character to use to erase a character", 0, &termEraseChar }, 81357416Smarkm { "kill", "character to use to erase a line", 0, &termKillChar }, 81457416Smarkm { "lnext", "character to use for literal next", 0, &termLiteralNextChar }, 81557416Smarkm { "susp", "character to cause a Suspend Process", 0, &termSuspChar }, 81657416Smarkm { "reprint", "character to use for line reprint", 0, &termRprntChar }, 81757416Smarkm { "worderase", "character to use to erase a word", 0, &termWerasChar }, 81857416Smarkm { "start", "character to use for XON", 0, &termStartChar }, 81957416Smarkm { "stop", "character to use for XOFF", 0, &termStopChar }, 82057416Smarkm { "forw1", "alternate end of line character", 0, &termForw1Char }, 82157416Smarkm { "forw2", "alternate end of line character", 0, &termForw2Char }, 82257416Smarkm { "ayt", "alternate AYT character", 0, &termAytChar }, 82357416Smarkm { 0 } 82457416Smarkm}; 82557416Smarkm 82657416Smarkmstatic struct setlist * 82757416Smarkmgetset(char *name) 82857416Smarkm{ 82957416Smarkm return (struct setlist *) 83057416Smarkm genget(name, (char **) Setlist, sizeof(struct setlist)); 83157416Smarkm} 83257416Smarkm 83357416Smarkmvoid 83457416Smarkmset_escape_char(char *s) 83557416Smarkm{ 83657416Smarkm if (rlogin != _POSIX_VDISABLE) { 83757416Smarkm rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 83857416Smarkm printf("Telnet rlogin escape character is '%s'.\r\n", 83957416Smarkm control(rlogin)); 84057416Smarkm } else { 84157416Smarkm escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 84257416Smarkm printf("Telnet escape character is '%s'.\r\n", control(escape)); 84357416Smarkm } 84457416Smarkm} 84557416Smarkm 84657416Smarkmstatic int 84757416Smarkmsetcmd(int argc, char *argv[]) 84857416Smarkm{ 84957416Smarkm int value; 85057416Smarkm struct setlist *ct; 85157416Smarkm struct togglelist *c; 85257416Smarkm 85357416Smarkm if (argc < 2 || argc > 3) { 85457416Smarkm printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n"); 85557416Smarkm return 0; 85657416Smarkm } 85757416Smarkm if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) { 85857416Smarkm for (ct = Setlist; ct->name; ct++) 85957416Smarkm printf("%-15s %s\r\n", ct->name, ct->help); 86057416Smarkm printf("\r\n"); 86157416Smarkm settogglehelp(1); 86257416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 86357416Smarkm return 0; 86457416Smarkm } 86557416Smarkm 86657416Smarkm ct = getset(argv[1]); 86757416Smarkm if (ct == 0) { 86857416Smarkm c = GETTOGGLE(argv[1]); 86957416Smarkm if (c == 0) { 87057416Smarkm fprintf(stderr, "'%s': unknown argument ('set ?' for help).\r\n", 87157416Smarkm argv[1]); 87257416Smarkm return 0; 87357416Smarkm } else if (Ambiguous(c)) { 87457416Smarkm fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n", 87557416Smarkm argv[1]); 87657416Smarkm return 0; 87757416Smarkm } 87857416Smarkm if (c->variable) { 87957416Smarkm if ((argc == 2) || (strcmp("on", argv[2]) == 0)) 88057416Smarkm *c->variable = 1; 88157416Smarkm else if (strcmp("off", argv[2]) == 0) 88257416Smarkm *c->variable = 0; 88357416Smarkm else { 88457416Smarkm printf("Format is 'set togglename [on|off]'\r\n'set ?' for help.\r\n"); 88557416Smarkm return 0; 88657416Smarkm } 88757416Smarkm if (c->actionexplanation) { 88857416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 88957416Smarkm c->actionexplanation); 89057416Smarkm } 89157416Smarkm } 89257416Smarkm if (c->handler) 89357416Smarkm (*c->handler)(1); 89457416Smarkm } else if (argc != 3) { 89557416Smarkm printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n"); 89657416Smarkm return 0; 89757416Smarkm } else if (Ambiguous(ct)) { 89857416Smarkm fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n", 89957416Smarkm argv[1]); 90057416Smarkm return 0; 90157416Smarkm } else if (ct->handler) { 90257416Smarkm (*ct->handler)(argv[2]); 90357416Smarkm printf("%s set to \"%s\".\r\n", ct->name, (char *)ct->charp); 90457416Smarkm } else { 90557416Smarkm if (strcmp("off", argv[2])) { 90657416Smarkm value = special(argv[2]); 90757416Smarkm } else { 90857416Smarkm value = _POSIX_VDISABLE; 90957416Smarkm } 91057416Smarkm *(ct->charp) = (cc_t)value; 91157416Smarkm printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp))); 91257416Smarkm } 91357416Smarkm slc_check(); 91457416Smarkm return 1; 91557416Smarkm} 91657416Smarkm 91757416Smarkmstatic int 91857416Smarkmunsetcmd(int argc, char *argv[]) 91957416Smarkm{ 92057416Smarkm struct setlist *ct; 92157416Smarkm struct togglelist *c; 92257416Smarkm char *name; 92357416Smarkm 92457416Smarkm if (argc < 2) { 92557416Smarkm fprintf(stderr, 92657416Smarkm "Need an argument to 'unset' command. 'unset ?' for help.\r\n"); 92757416Smarkm return 0; 92857416Smarkm } 92957416Smarkm if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 93057416Smarkm for (ct = Setlist; ct->name; ct++) 93157416Smarkm printf("%-15s %s\r\n", ct->name, ct->help); 93257416Smarkm printf("\r\n"); 93357416Smarkm settogglehelp(0); 93457416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 93557416Smarkm return 0; 93657416Smarkm } 93757416Smarkm 93857416Smarkm argc--; 93957416Smarkm argv++; 94057416Smarkm while (argc--) { 94157416Smarkm name = *argv++; 94257416Smarkm ct = getset(name); 94357416Smarkm if (ct == 0) { 94457416Smarkm c = GETTOGGLE(name); 94557416Smarkm if (c == 0) { 94657416Smarkm fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\r\n", 94757416Smarkm name); 94857416Smarkm return 0; 94957416Smarkm } else if (Ambiguous(c)) { 95057416Smarkm fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n", 95157416Smarkm name); 95257416Smarkm return 0; 95357416Smarkm } 95457416Smarkm if (c->variable) { 95557416Smarkm *c->variable = 0; 95657416Smarkm if (c->actionexplanation) { 95757416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 95857416Smarkm c->actionexplanation); 95957416Smarkm } 96057416Smarkm } 96157416Smarkm if (c->handler) 96257416Smarkm (*c->handler)(0); 96357416Smarkm } else if (Ambiguous(ct)) { 96457416Smarkm fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n", 96557416Smarkm name); 96657416Smarkm return 0; 96757416Smarkm } else if (ct->handler) { 96857416Smarkm (*ct->handler)(0); 96957416Smarkm printf("%s reset to \"%s\".\r\n", ct->name, (char *)ct->charp); 97057416Smarkm } else { 97157416Smarkm *(ct->charp) = _POSIX_VDISABLE; 97257416Smarkm printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp))); 97357416Smarkm } 97457416Smarkm } 97557416Smarkm return 1; 97657416Smarkm} 97757416Smarkm 97857416Smarkm/* 97957416Smarkm * The following are the data structures and routines for the 98057416Smarkm * 'mode' command. 98157416Smarkm */ 98257416Smarkm#ifdef KLUDGELINEMODE 98357416Smarkm 98457416Smarkmstatic int 98557416Smarkmdokludgemode(void) 98657416Smarkm{ 98757416Smarkm kludgelinemode = 1; 98857416Smarkm send_wont(TELOPT_LINEMODE, 1); 98957416Smarkm send_dont(TELOPT_SGA, 1); 99057416Smarkm send_dont(TELOPT_ECHO, 1); 99157416Smarkm return 1; 99257416Smarkm} 99357416Smarkm#endif 99457416Smarkm 99557416Smarkmstatic int 99657416Smarkmdolinemode() 99757416Smarkm{ 99857416Smarkm#ifdef KLUDGELINEMODE 99957416Smarkm if (kludgelinemode) 100057416Smarkm send_dont(TELOPT_SGA, 1); 100157416Smarkm#endif 100257416Smarkm send_will(TELOPT_LINEMODE, 1); 100357416Smarkm send_dont(TELOPT_ECHO, 1); 100457416Smarkm return 1; 100557416Smarkm} 100657416Smarkm 100757416Smarkmstatic int 100857416Smarkmdocharmode() 100957416Smarkm{ 101057416Smarkm#ifdef KLUDGELINEMODE 101157416Smarkm if (kludgelinemode) 101257416Smarkm send_do(TELOPT_SGA, 1); 101357416Smarkm else 101457416Smarkm#endif 101557416Smarkm send_wont(TELOPT_LINEMODE, 1); 101657416Smarkm send_do(TELOPT_ECHO, 1); 101757416Smarkm return 1; 101857416Smarkm} 101957416Smarkm 102057416Smarkmstatic int 102157416Smarkmdolmmode(int bit, int on) 102257416Smarkm{ 102357416Smarkm unsigned char c; 102457416Smarkm 102557416Smarkm if (my_want_state_is_wont(TELOPT_LINEMODE)) { 102657416Smarkm printf("?Need to have LINEMODE option enabled first.\r\n"); 102757416Smarkm printf("'mode ?' for help.\r\n"); 102857416Smarkm return 0; 102957416Smarkm } 103057416Smarkm 103157416Smarkm if (on) 103257416Smarkm c = (linemode | bit); 103357416Smarkm else 103457416Smarkm c = (linemode & ~bit); 103557416Smarkm lm_mode(&c, 1, 1); 103657416Smarkm return 1; 103757416Smarkm} 103857416Smarkm 103957416Smarkmstatic int 104057416Smarkmtn_setmode(int bit) 104157416Smarkm{ 104257416Smarkm return dolmmode(bit, 1); 104357416Smarkm} 104457416Smarkm 104557416Smarkmstatic int 104657416Smarkmtn_clearmode(int bit) 104757416Smarkm{ 104857416Smarkm return dolmmode(bit, 0); 104957416Smarkm} 105057416Smarkm 105157416Smarkmstruct modelist { 105257416Smarkm char *name; /* command name */ 105357416Smarkm char *help; /* help string */ 105457416Smarkm int (*handler)(); /* routine which executes command */ 105557416Smarkm int needconnect; /* Do we need to be connected to execute? */ 105657416Smarkm int arg1; 105757416Smarkm}; 105857416Smarkm 105957416Smarkmstatic int modehelp(void); 106057416Smarkm 106157416Smarkmstatic struct modelist ModeList[] = { 106257416Smarkm { "character", "Disable LINEMODE option", docharmode, 1 }, 106357416Smarkm#ifdef KLUDGELINEMODE 106457416Smarkm { "", "(or disable obsolete line-by-line mode)", 0 }, 106557416Smarkm#endif 106657416Smarkm { "line", "Enable LINEMODE option", dolinemode, 1 }, 106757416Smarkm#ifdef KLUDGELINEMODE 106857416Smarkm { "", "(or enable obsolete line-by-line mode)", 0 }, 106957416Smarkm#endif 107057416Smarkm { "", "", 0 }, 107157416Smarkm { "", "These require the LINEMODE option to be enabled", 0 }, 107257416Smarkm { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG }, 107357416Smarkm { "+isig", 0, tn_setmode, 1, MODE_TRAPSIG }, 107457416Smarkm { "-isig", "Disable signal trapping", tn_clearmode, 1, MODE_TRAPSIG }, 107557416Smarkm { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT }, 107657416Smarkm { "+edit", 0, tn_setmode, 1, MODE_EDIT }, 107757416Smarkm { "-edit", "Disable character editing", tn_clearmode, 1, MODE_EDIT }, 107857416Smarkm { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB }, 107957416Smarkm { "+softtabs", 0, tn_setmode, 1, MODE_SOFT_TAB }, 1080102644Snectar { "-softtabs", "Disable tab expansion", tn_clearmode, 1, MODE_SOFT_TAB }, 108157416Smarkm { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO }, 108257416Smarkm { "+litecho", 0, tn_setmode, 1, MODE_LIT_ECHO }, 108357416Smarkm { "-litecho", "Disable literal character echo", tn_clearmode, 1, MODE_LIT_ECHO }, 108457416Smarkm { "help", 0, modehelp, 0 }, 108557416Smarkm#ifdef KLUDGELINEMODE 108657416Smarkm { "kludgeline", 0, dokludgemode, 1 }, 108757416Smarkm#endif 108857416Smarkm { "", "", 0 }, 108957416Smarkm { "?", "Print help information", modehelp, 0 }, 109057416Smarkm { 0 }, 109157416Smarkm}; 109257416Smarkm 109357416Smarkm 109457416Smarkmstatic int 109557416Smarkmmodehelp(void) 109657416Smarkm{ 109757416Smarkm struct modelist *mt; 109857416Smarkm 109957416Smarkm printf("format is: 'mode Mode', where 'Mode' is one of:\r\n\r\n"); 110057416Smarkm for (mt = ModeList; mt->name; mt++) { 110157416Smarkm if (mt->help) { 110257416Smarkm if (*mt->help) 110357416Smarkm printf("%-15s %s\r\n", mt->name, mt->help); 110457416Smarkm else 110557416Smarkm printf("\r\n"); 110657416Smarkm } 110757416Smarkm } 110857416Smarkm return 0; 110957416Smarkm} 111057416Smarkm 111157416Smarkm#define GETMODECMD(name) (struct modelist *) \ 111257416Smarkm genget(name, (char **) ModeList, sizeof(struct modelist)) 111357416Smarkm 111457416Smarkmstatic int 111557416Smarkmmodecmd(int argc, char **argv) 111657416Smarkm{ 111757416Smarkm struct modelist *mt; 111857416Smarkm 111957416Smarkm if (argc != 2) { 112057416Smarkm printf("'mode' command requires an argument\r\n"); 112157416Smarkm printf("'mode ?' for help.\r\n"); 112257416Smarkm } else if ((mt = GETMODECMD(argv[1])) == 0) { 112357416Smarkm fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\r\n", argv[1]); 112457416Smarkm } else if (Ambiguous(mt)) { 112557416Smarkm fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\r\n", argv[1]); 112657416Smarkm } else if (mt->needconnect && !connected) { 112757416Smarkm printf("?Need to be connected first.\r\n"); 112857416Smarkm printf("'mode ?' for help.\r\n"); 112957416Smarkm } else if (mt->handler) { 113057416Smarkm return (*mt->handler)(mt->arg1); 113157416Smarkm } 113257416Smarkm return 0; 113357416Smarkm} 113457416Smarkm 113557416Smarkm/* 113657416Smarkm * The following data structures and routines implement the 113757416Smarkm * "display" command. 113857416Smarkm */ 113957416Smarkm 114057416Smarkmstatic int 114157416Smarkmdisplay(int argc, char *argv[]) 114257416Smarkm{ 114357416Smarkm struct togglelist *tl; 114457416Smarkm struct setlist *sl; 114557416Smarkm 114657416Smarkm#define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 114757416Smarkm if (*tl->variable) { \ 114857416Smarkm printf("will"); \ 114957416Smarkm } else { \ 115057416Smarkm printf("won't"); \ 115157416Smarkm } \ 115257416Smarkm printf(" %s.\r\n", tl->actionexplanation); \ 115357416Smarkm } 115457416Smarkm 115557416Smarkm#define doset(sl) if (sl->name && *sl->name != ' ') { \ 115657416Smarkm if (sl->handler == 0) \ 115757416Smarkm printf("%-15s [%s]\r\n", sl->name, control(*sl->charp)); \ 115857416Smarkm else \ 115957416Smarkm printf("%-15s \"%s\"\r\n", sl->name, (char *)sl->charp); \ 116057416Smarkm } 116157416Smarkm 116257416Smarkm if (argc == 1) { 116357416Smarkm for (tl = Togglelist; tl->name; tl++) { 116457416Smarkm dotog(tl); 116557416Smarkm } 116657416Smarkm printf("\r\n"); 116757416Smarkm for (sl = Setlist; sl->name; sl++) { 116857416Smarkm doset(sl); 116957416Smarkm } 117057416Smarkm } else { 117157416Smarkm int i; 117257416Smarkm 117357416Smarkm for (i = 1; i < argc; i++) { 117457416Smarkm sl = getset(argv[i]); 117557416Smarkm tl = GETTOGGLE(argv[i]); 117657416Smarkm if (Ambiguous(sl) || Ambiguous(tl)) { 117757416Smarkm printf("?Ambiguous argument '%s'.\r\n", argv[i]); 117857416Smarkm return 0; 117957416Smarkm } else if (!sl && !tl) { 118057416Smarkm printf("?Unknown argument '%s'.\r\n", argv[i]); 118157416Smarkm return 0; 118257416Smarkm } else { 118357416Smarkm if (tl) { 118457416Smarkm dotog(tl); 118557416Smarkm } 118657416Smarkm if (sl) { 118757416Smarkm doset(sl); 118857416Smarkm } 118957416Smarkm } 119057416Smarkm } 119157416Smarkm } 119257416Smarkm/*@*/optionstatus(); 119357416Smarkm#if defined(ENCRYPTION) 119457416Smarkm EncryptStatus(); 119557416Smarkm#endif 119657416Smarkm return 1; 119757416Smarkm#undef doset 119857416Smarkm#undef dotog 119957416Smarkm} 120057416Smarkm 120157416Smarkm/* 120257416Smarkm * The following are the data structures, and many of the routines, 120357416Smarkm * relating to command processing. 120457416Smarkm */ 120557416Smarkm 120657416Smarkm/* 120757416Smarkm * Set the escape character. 120857416Smarkm */ 120957416Smarkmstatic int 121057416Smarkmsetescape(int argc, char *argv[]) 121157416Smarkm{ 121257416Smarkm char *arg; 121357416Smarkm char buf[50]; 121457416Smarkm 121557416Smarkm printf( 121657416Smarkm "Deprecated usage - please use 'set escape%s%s' in the future.\r\n", 121757416Smarkm (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 121857416Smarkm if (argc > 2) 121957416Smarkm arg = argv[1]; 122057416Smarkm else { 122157416Smarkm printf("new escape character: "); 122257416Smarkm fgets(buf, sizeof(buf), stdin); 122357416Smarkm arg = buf; 122457416Smarkm } 122557416Smarkm if (arg[0] != '\0') 122657416Smarkm escape = arg[0]; 122757416Smarkm printf("Escape character is '%s'.\r\n", control(escape)); 122857416Smarkm 122957416Smarkm fflush(stdout); 123057416Smarkm return 1; 123157416Smarkm} 123257416Smarkm 123357416Smarkmstatic int 123457416Smarkmtogcrmod() 123557416Smarkm{ 123657416Smarkm crmod = !crmod; 123757416Smarkm printf("Deprecated usage - please use 'toggle crmod' in the future.\r\n"); 123857416Smarkm printf("%s map carriage return on output.\r\n", crmod ? "Will" : "Won't"); 123957416Smarkm fflush(stdout); 124057416Smarkm return 1; 124157416Smarkm} 124257416Smarkm 124357416Smarkmstatic int 124457416Smarkmtelnetsuspend() 124557416Smarkm{ 124657416Smarkm#ifdef SIGTSTP 124757416Smarkm setcommandmode(); 124857416Smarkm { 124957416Smarkm long oldrows, oldcols, newrows, newcols, err; 125057416Smarkm 125157416Smarkm err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 125257416Smarkm kill(0, SIGTSTP); 125357416Smarkm /* 125457416Smarkm * If we didn't get the window size before the SUSPEND, but we 125557416Smarkm * can get them now (?), then send the NAWS to make sure that 125657416Smarkm * we are set up for the right window size. 125757416Smarkm */ 125857416Smarkm if (TerminalWindowSize(&newrows, &newcols) && connected && 125957416Smarkm (err || ((oldrows != newrows) || (oldcols != newcols)))) { 126057416Smarkm sendnaws(); 126157416Smarkm } 126257416Smarkm } 126357416Smarkm /* reget parameters in case they were changed */ 126457416Smarkm TerminalSaveState(); 126557416Smarkm setconnmode(0); 126657416Smarkm#else 126757416Smarkm printf("Suspend is not supported. Try the '!' command instead\r\n"); 126857416Smarkm#endif 126957416Smarkm return 1; 127057416Smarkm} 127157416Smarkm 127257416Smarkmstatic int 127357416Smarkmshell(int argc, char **argv) 127457416Smarkm{ 127557416Smarkm long oldrows, oldcols, newrows, newcols, err; 127657416Smarkm 127757416Smarkm setcommandmode(); 127857416Smarkm 127957416Smarkm err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 128057416Smarkm switch(fork()) { 128157416Smarkm case -1: 128257416Smarkm perror("Fork failed\r\n"); 128357416Smarkm break; 128457416Smarkm 128557416Smarkm case 0: 128657416Smarkm { 128757416Smarkm /* 128857416Smarkm * Fire up the shell in the child. 128957416Smarkm */ 129057416Smarkm char *shellp, *shellname; 129157416Smarkm 129257416Smarkm shellp = getenv("SHELL"); 129357416Smarkm if (shellp == NULL) 129457416Smarkm shellp = "/bin/sh"; 129557416Smarkm if ((shellname = strrchr(shellp, '/')) == 0) 129657416Smarkm shellname = shellp; 129757416Smarkm else 129857416Smarkm shellname++; 129957416Smarkm if (argc > 1) 1300178825Sdfr execl(shellp, shellname, "-c", &saveline[1], NULL); 130157416Smarkm else 1302178825Sdfr execl(shellp, shellname, NULL); 130357416Smarkm perror("Execl"); 130457416Smarkm _exit(1); 130557416Smarkm } 130657416Smarkm default: 130757416Smarkm wait((int *)0); /* Wait for the shell to complete */ 130857416Smarkm 130957416Smarkm if (TerminalWindowSize(&newrows, &newcols) && connected && 131057416Smarkm (err || ((oldrows != newrows) || (oldcols != newcols)))) { 131157416Smarkm sendnaws(); 131257416Smarkm } 131357416Smarkm break; 131457416Smarkm } 131557416Smarkm return 1; 131657416Smarkm} 131757416Smarkm 131857416Smarkmstatic int 131957416Smarkmbye(int argc, char **argv) 132057416Smarkm{ 132157416Smarkm if (connected) { 132257416Smarkm shutdown(net, 2); 132357416Smarkm printf("Connection closed.\r\n"); 132457416Smarkm NetClose(net); 132557416Smarkm connected = 0; 132657416Smarkm resettermname = 1; 132757416Smarkm#if defined(AUTHENTICATION) || defined(ENCRYPTION) 132857416Smarkm auth_encrypt_connect(connected); 132957416Smarkm#endif 133057416Smarkm /* reset options */ 133157416Smarkm tninit(); 133257416Smarkm } 1333233294Sstas if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) 133457416Smarkm longjmp(toplevel, 1); 133557416Smarkm return 0; /* NOTREACHED */ 133657416Smarkm} 133757416Smarkm 133857416Smarkmint 133957416Smarkmquit(void) 134057416Smarkm{ 134157416Smarkm call(bye, "bye", "fromquit", 0); 134257416Smarkm Exit(0); 134357416Smarkm return 0; /*NOTREACHED*/ 134457416Smarkm} 134557416Smarkm 134657416Smarkmstatic int 134757416Smarkmlogout() 134857416Smarkm{ 134957416Smarkm send_do(TELOPT_LOGOUT, 1); 135057416Smarkm netflush(); 135157416Smarkm return 1; 135257416Smarkm} 135357416Smarkm 135457416Smarkm 135557416Smarkm/* 135657416Smarkm * The SLC command. 135757416Smarkm */ 135857416Smarkm 135957416Smarkmstruct slclist { 136057416Smarkm char *name; 136157416Smarkm char *help; 136257416Smarkm void (*handler)(); 136357416Smarkm int arg; 136457416Smarkm}; 136557416Smarkm 136657416Smarkmstatic void slc_help(void); 136757416Smarkm 136857416Smarkmstruct slclist SlcList[] = { 136957416Smarkm { "export", "Use local special character definitions", 137057416Smarkm slc_mode_export, 0 }, 137157416Smarkm { "import", "Use remote special character definitions", 137257416Smarkm slc_mode_import, 1 }, 137357416Smarkm { "check", "Verify remote special character definitions", 137457416Smarkm slc_mode_import, 0 }, 137557416Smarkm { "help", 0, slc_help, 0 }, 137657416Smarkm { "?", "Print help information", slc_help, 0 }, 137757416Smarkm { 0 }, 137857416Smarkm}; 137957416Smarkm 138057416Smarkmstatic void 138157416Smarkmslc_help(void) 138257416Smarkm{ 138357416Smarkm struct slclist *c; 138457416Smarkm 138557416Smarkm for (c = SlcList; c->name; c++) { 138657416Smarkm if (c->help) { 138757416Smarkm if (*c->help) 138857416Smarkm printf("%-15s %s\r\n", c->name, c->help); 138957416Smarkm else 139057416Smarkm printf("\r\n"); 139157416Smarkm } 139257416Smarkm } 139357416Smarkm} 139457416Smarkm 139557416Smarkmstatic struct slclist * 139657416Smarkmgetslc(char *name) 139757416Smarkm{ 139857416Smarkm return (struct slclist *) 139957416Smarkm genget(name, (char **) SlcList, sizeof(struct slclist)); 140057416Smarkm} 140157416Smarkm 140257416Smarkmstatic int 140357416Smarkmslccmd(int argc, char **argv) 140457416Smarkm{ 140557416Smarkm struct slclist *c; 140657416Smarkm 140757416Smarkm if (argc != 2) { 140857416Smarkm fprintf(stderr, 140957416Smarkm "Need an argument to 'slc' command. 'slc ?' for help.\r\n"); 141057416Smarkm return 0; 141157416Smarkm } 141257416Smarkm c = getslc(argv[1]); 141357416Smarkm if (c == 0) { 141457416Smarkm fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\r\n", 141557416Smarkm argv[1]); 141657416Smarkm return 0; 141757416Smarkm } 141857416Smarkm if (Ambiguous(c)) { 141957416Smarkm fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\r\n", 142057416Smarkm argv[1]); 142157416Smarkm return 0; 142257416Smarkm } 142357416Smarkm (*c->handler)(c->arg); 142457416Smarkm slcstate(); 142557416Smarkm return 1; 142657416Smarkm} 142757416Smarkm 142857416Smarkm/* 142957416Smarkm * The ENVIRON command. 143057416Smarkm */ 143157416Smarkm 143257416Smarkmstruct envlist { 143357416Smarkm char *name; 143457416Smarkm char *help; 143557416Smarkm void (*handler)(); 143657416Smarkm int narg; 143757416Smarkm}; 143857416Smarkm 143957416Smarkmstatic void env_help (void); 144057416Smarkm 144157416Smarkmstruct envlist EnvList[] = { 144257416Smarkm { "define", "Define an environment variable", 144357416Smarkm (void (*)())env_define, 2 }, 144457416Smarkm { "undefine", "Undefine an environment variable", 144557416Smarkm env_undefine, 1 }, 144657416Smarkm { "export", "Mark an environment variable for automatic export", 144757416Smarkm env_export, 1 }, 144857416Smarkm { "unexport", "Don't mark an environment variable for automatic export", 144957416Smarkm env_unexport, 1 }, 145057416Smarkm { "send", "Send an environment variable", env_send, 1 }, 145157416Smarkm { "list", "List the current environment variables", 145257416Smarkm env_list, 0 }, 145357416Smarkm { "help", 0, env_help, 0 }, 145457416Smarkm { "?", "Print help information", env_help, 0 }, 145557416Smarkm { 0 }, 145657416Smarkm}; 145757416Smarkm 145857416Smarkmstatic void 145957416Smarkmenv_help() 146057416Smarkm{ 146157416Smarkm struct envlist *c; 146257416Smarkm 146357416Smarkm for (c = EnvList; c->name; c++) { 146457416Smarkm if (c->help) { 146557416Smarkm if (*c->help) 146657416Smarkm printf("%-15s %s\r\n", c->name, c->help); 146757416Smarkm else 146857416Smarkm printf("\r\n"); 146957416Smarkm } 147057416Smarkm } 147157416Smarkm} 147257416Smarkm 147357416Smarkmstatic struct envlist * 147457416Smarkmgetenvcmd(char *name) 147557416Smarkm{ 147657416Smarkm return (struct envlist *) 147757416Smarkm genget(name, (char **) EnvList, sizeof(struct envlist)); 147857416Smarkm} 147957416Smarkm 148057416Smarkmstatic int 148157416Smarkmenv_cmd(int argc, char **argv) 148257416Smarkm{ 148357416Smarkm struct envlist *c; 148457416Smarkm 148557416Smarkm if (argc < 2) { 148657416Smarkm fprintf(stderr, 148757416Smarkm "Need an argument to 'environ' command. 'environ ?' for help.\r\n"); 148857416Smarkm return 0; 148957416Smarkm } 149057416Smarkm c = getenvcmd(argv[1]); 149157416Smarkm if (c == 0) { 149257416Smarkm fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\r\n", 149357416Smarkm argv[1]); 149457416Smarkm return 0; 149557416Smarkm } 149657416Smarkm if (Ambiguous(c)) { 149757416Smarkm fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\r\n", 149857416Smarkm argv[1]); 149957416Smarkm return 0; 150057416Smarkm } 150157416Smarkm if (c->narg + 2 != argc) { 150257416Smarkm fprintf(stderr, 150357416Smarkm "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\r\n", 150457416Smarkm c->narg < argc + 2 ? "only " : "", 150557416Smarkm c->narg, c->narg == 1 ? "" : "s", c->name); 150657416Smarkm return 0; 150757416Smarkm } 150857416Smarkm (*c->handler)(argv[2], argv[3]); 150957416Smarkm return 1; 151057416Smarkm} 151157416Smarkm 151257416Smarkmstruct env_lst { 151357416Smarkm struct env_lst *next; /* pointer to next structure */ 151457416Smarkm struct env_lst *prev; /* pointer to previous structure */ 151557416Smarkm unsigned char *var; /* pointer to variable name */ 151657416Smarkm unsigned char *value; /* pointer to variable value */ 151757416Smarkm int export; /* 1 -> export with default list of variables */ 151857416Smarkm int welldefined; /* A well defined variable */ 151957416Smarkm}; 152057416Smarkm 152157416Smarkmstruct env_lst envlisthead; 152257416Smarkm 152357416Smarkmstruct env_lst * 152457416Smarkmenv_find(unsigned char *var) 152557416Smarkm{ 152657416Smarkm struct env_lst *ep; 152757416Smarkm 152857416Smarkm for (ep = envlisthead.next; ep; ep = ep->next) { 152957416Smarkm if (strcmp((char *)ep->var, (char *)var) == 0) 153057416Smarkm return(ep); 153157416Smarkm } 153257416Smarkm return(NULL); 153357416Smarkm} 153457416Smarkm 1535233294Sstas#if !HAVE_DECL_ENVIRON 1536233294Sstasextern char **environ; 153757416Smarkm#endif 153857416Smarkm 153957416Smarkmvoid 154057416Smarkmenv_init(void) 154157416Smarkm{ 154257416Smarkm char **epp, *cp; 154357416Smarkm struct env_lst *ep; 154457416Smarkm 154557416Smarkm for (epp = environ; *epp; epp++) { 154657416Smarkm if ((cp = strchr(*epp, '='))) { 154757416Smarkm *cp = '\0'; 154857416Smarkm ep = env_define((unsigned char *)*epp, 154957416Smarkm (unsigned char *)cp+1); 155057416Smarkm ep->export = 0; 155157416Smarkm *cp = '='; 155257416Smarkm } 155357416Smarkm } 155457416Smarkm /* 155557416Smarkm * Special case for DISPLAY variable. If it is ":0.0" or 155657416Smarkm * "unix:0.0", we have to get rid of "unix" and insert our 155757416Smarkm * hostname. 155857416Smarkm */ 155990926Snectar if ((ep = env_find((unsigned char*)"DISPLAY")) 156057416Smarkm && (*ep->value == ':' 156157416Smarkm || strncmp((char *)ep->value, "unix:", 5) == 0)) { 156257416Smarkm char hbuf[256+1]; 156357416Smarkm char *cp2 = strchr((char *)ep->value, ':'); 1564178825Sdfr int error; 156557416Smarkm 156657416Smarkm /* XXX - should be k_gethostname? */ 156757416Smarkm gethostname(hbuf, 256); 156857416Smarkm hbuf[256] = '\0'; 156957416Smarkm 157057416Smarkm /* If this is not the full name, try to get it via DNS */ 157157416Smarkm if (strchr(hbuf, '.') == 0) { 157257416Smarkm struct addrinfo hints, *ai, *a; 157357416Smarkm 157457416Smarkm memset (&hints, 0, sizeof(hints)); 157557416Smarkm hints.ai_flags = AI_CANONNAME; 157657416Smarkm 157757416Smarkm error = getaddrinfo (hbuf, NULL, &hints, &ai); 157857416Smarkm if (error == 0) { 157957416Smarkm for (a = ai; a != NULL; a = a->ai_next) 158057416Smarkm if (a->ai_canonname != NULL) { 158157416Smarkm strlcpy (hbuf, 158257416Smarkm ai->ai_canonname, 158357416Smarkm 256); 158457416Smarkm break; 158557416Smarkm } 158657416Smarkm freeaddrinfo (ai); 158757416Smarkm } 158857416Smarkm } 158957416Smarkm 1590178825Sdfr error = asprintf (&cp, "%s%s", hbuf, cp2); 1591178825Sdfr if (error != -1) { 1592178825Sdfr free (ep->value); 1593178825Sdfr ep->value = (unsigned char *)cp; 1594178825Sdfr } 159557416Smarkm } 159657416Smarkm /* 159757416Smarkm * If USER is not defined, but LOGNAME is, then add 159857416Smarkm * USER with the value from LOGNAME. By default, we 159957416Smarkm * don't export the USER variable. 160057416Smarkm */ 1601233294Sstas if ((env_find((unsigned char*)"USER") == NULL) && 160290926Snectar (ep = env_find((unsigned char*)"LOGNAME"))) { 160357416Smarkm env_define((unsigned char *)"USER", ep->value); 160457416Smarkm env_unexport((unsigned char *)"USER"); 160557416Smarkm } 160657416Smarkm env_export((unsigned char *)"DISPLAY"); 160757416Smarkm env_export((unsigned char *)"PRINTER"); 160857416Smarkm env_export((unsigned char *)"XAUTHORITY"); 160957416Smarkm} 161057416Smarkm 161157416Smarkmstruct env_lst * 161257416Smarkmenv_define(unsigned char *var, unsigned char *value) 161357416Smarkm{ 161457416Smarkm struct env_lst *ep; 161557416Smarkm 161657416Smarkm if ((ep = env_find(var))) { 161757416Smarkm if (ep->var) 161857416Smarkm free(ep->var); 161957416Smarkm if (ep->value) 162057416Smarkm free(ep->value); 162157416Smarkm } else { 162257416Smarkm ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 162357416Smarkm ep->next = envlisthead.next; 162457416Smarkm envlisthead.next = ep; 162557416Smarkm ep->prev = &envlisthead; 162657416Smarkm if (ep->next) 162757416Smarkm ep->next->prev = ep; 162857416Smarkm } 162957416Smarkm ep->welldefined = opt_welldefined((char *)var); 163057416Smarkm ep->export = 1; 163157416Smarkm ep->var = (unsigned char *)strdup((char *)var); 163257416Smarkm ep->value = (unsigned char *)strdup((char *)value); 163357416Smarkm return(ep); 163457416Smarkm} 163557416Smarkm 163657416Smarkmvoid 163757416Smarkmenv_undefine(unsigned char *var) 163857416Smarkm{ 163957416Smarkm struct env_lst *ep; 164057416Smarkm 164157416Smarkm if ((ep = env_find(var))) { 164257416Smarkm ep->prev->next = ep->next; 164357416Smarkm if (ep->next) 164457416Smarkm ep->next->prev = ep->prev; 164557416Smarkm if (ep->var) 164657416Smarkm free(ep->var); 164757416Smarkm if (ep->value) 164857416Smarkm free(ep->value); 164957416Smarkm free(ep); 165057416Smarkm } 165157416Smarkm} 165257416Smarkm 165357416Smarkmvoid 165457416Smarkmenv_export(unsigned char *var) 165557416Smarkm{ 165657416Smarkm struct env_lst *ep; 165757416Smarkm 165857416Smarkm if ((ep = env_find(var))) 165957416Smarkm ep->export = 1; 166057416Smarkm} 166157416Smarkm 166257416Smarkmvoid 166357416Smarkmenv_unexport(unsigned char *var) 166457416Smarkm{ 166557416Smarkm struct env_lst *ep; 166657416Smarkm 166757416Smarkm if ((ep = env_find(var))) 166857416Smarkm ep->export = 0; 166957416Smarkm} 167057416Smarkm 167157416Smarkmvoid 167257416Smarkmenv_send(unsigned char *var) 167357416Smarkm{ 167457416Smarkm struct env_lst *ep; 167557416Smarkm 167657416Smarkm if (my_state_is_wont(TELOPT_NEW_ENVIRON) 167757416Smarkm#ifdef OLD_ENVIRON 167857416Smarkm && my_state_is_wont(TELOPT_OLD_ENVIRON) 167957416Smarkm#endif 168057416Smarkm ) { 168157416Smarkm fprintf(stderr, 168257416Smarkm "Cannot send '%s': Telnet ENVIRON option not enabled\r\n", 168357416Smarkm var); 168457416Smarkm return; 168557416Smarkm } 168657416Smarkm ep = env_find(var); 168757416Smarkm if (ep == 0) { 168857416Smarkm fprintf(stderr, "Cannot send '%s': variable not defined\r\n", 168957416Smarkm var); 169057416Smarkm return; 169157416Smarkm } 169257416Smarkm env_opt_start_info(); 169357416Smarkm env_opt_add(ep->var); 169457416Smarkm env_opt_end(0); 169557416Smarkm} 169657416Smarkm 169757416Smarkmvoid 169857416Smarkmenv_list(void) 169957416Smarkm{ 170057416Smarkm struct env_lst *ep; 170157416Smarkm 170257416Smarkm for (ep = envlisthead.next; ep; ep = ep->next) { 170357416Smarkm printf("%c %-20s %s\r\n", ep->export ? '*' : ' ', 170457416Smarkm ep->var, ep->value); 170557416Smarkm } 170657416Smarkm} 170757416Smarkm 170857416Smarkmunsigned char * 170957416Smarkmenv_default(int init, int welldefined) 171057416Smarkm{ 171157416Smarkm static struct env_lst *nep = NULL; 171257416Smarkm 171357416Smarkm if (init) { 171457416Smarkm nep = &envlisthead; 171557416Smarkm return NULL; 171657416Smarkm } 171757416Smarkm if (nep) { 171857416Smarkm while ((nep = nep->next)) { 171957416Smarkm if (nep->export && (nep->welldefined == welldefined)) 172057416Smarkm return(nep->var); 172157416Smarkm } 172257416Smarkm } 172357416Smarkm return(NULL); 172457416Smarkm} 172557416Smarkm 172657416Smarkmunsigned char * 172757416Smarkmenv_getvalue(unsigned char *var) 172857416Smarkm{ 172957416Smarkm struct env_lst *ep; 173057416Smarkm 173157416Smarkm if ((ep = env_find(var))) 173257416Smarkm return(ep->value); 173357416Smarkm return(NULL); 173457416Smarkm} 173557416Smarkm 173657416Smarkm 173757416Smarkm#if defined(AUTHENTICATION) 173857416Smarkm/* 173957416Smarkm * The AUTHENTICATE command. 174057416Smarkm */ 174157416Smarkm 174257416Smarkmstruct authlist { 174357416Smarkm char *name; 174457416Smarkm char *help; 174557416Smarkm int (*handler)(); 174657416Smarkm int narg; 174757416Smarkm}; 174857416Smarkm 174957416Smarkmstatic int 175057416Smarkm auth_help (void); 175157416Smarkm 175257416Smarkmstruct authlist AuthList[] = { 175357416Smarkm { "status", "Display current status of authentication information", 175457416Smarkm auth_status, 0 }, 175557416Smarkm { "disable", "Disable an authentication type ('auth disable ?' for more)", 175657416Smarkm auth_disable, 1 }, 175757416Smarkm { "enable", "Enable an authentication type ('auth enable ?' for more)", 175857416Smarkm auth_enable, 1 }, 175957416Smarkm { "help", 0, auth_help, 0 }, 176057416Smarkm { "?", "Print help information", auth_help, 0 }, 176157416Smarkm { 0 }, 176257416Smarkm}; 176357416Smarkm 176457416Smarkmstatic int 176557416Smarkmauth_help() 176657416Smarkm{ 176757416Smarkm struct authlist *c; 176857416Smarkm 176957416Smarkm for (c = AuthList; c->name; c++) { 177057416Smarkm if (c->help) { 177157416Smarkm if (*c->help) 177257416Smarkm printf("%-15s %s\r\n", c->name, c->help); 177357416Smarkm else 177457416Smarkm printf("\r\n"); 177557416Smarkm } 177657416Smarkm } 177757416Smarkm return 0; 177857416Smarkm} 177957416Smarkm 178057416Smarkmstatic int 178157416Smarkmauth_cmd(int argc, char **argv) 178257416Smarkm{ 178357416Smarkm struct authlist *c; 178457416Smarkm 178557416Smarkm if (argc < 2) { 178657416Smarkm fprintf(stderr, 178757416Smarkm "Need an argument to 'auth' command. 'auth ?' for help.\r\n"); 178857416Smarkm return 0; 178957416Smarkm } 179057416Smarkm 179157416Smarkm c = (struct authlist *) 179257416Smarkm genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 179357416Smarkm if (c == 0) { 179457416Smarkm fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\r\n", 179557416Smarkm argv[1]); 179657416Smarkm return 0; 179757416Smarkm } 179857416Smarkm if (Ambiguous(c)) { 179957416Smarkm fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\r\n", 180057416Smarkm argv[1]); 180157416Smarkm return 0; 180257416Smarkm } 180357416Smarkm if (c->narg + 2 != argc) { 180457416Smarkm fprintf(stderr, 180557416Smarkm "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\r\n", 180657416Smarkm c->narg < argc + 2 ? "only " : "", 180757416Smarkm c->narg, c->narg == 1 ? "" : "s", c->name); 180857416Smarkm return 0; 180957416Smarkm } 181057416Smarkm return((*c->handler)(argv[2], argv[3])); 181157416Smarkm} 181257416Smarkm#endif 181357416Smarkm 181457416Smarkm 181557416Smarkm#if defined(ENCRYPTION) 181657416Smarkm/* 181757416Smarkm * The ENCRYPT command. 181857416Smarkm */ 181957416Smarkm 182057416Smarkmstruct encryptlist { 182157416Smarkm char *name; 182257416Smarkm char *help; 182357416Smarkm int (*handler)(); 182457416Smarkm int needconnect; 182557416Smarkm int minarg; 182657416Smarkm int maxarg; 182757416Smarkm}; 182857416Smarkm 182957416Smarkmstatic int 183057416Smarkm EncryptHelp (void); 183157416Smarkm 183257416Smarkmstruct encryptlist EncryptList[] = { 183357416Smarkm { "enable", "Enable encryption. ('encrypt enable ?' for more)", 183457416Smarkm EncryptEnable, 1, 1, 2 }, 183557416Smarkm { "disable", "Disable encryption. ('encrypt enable ?' for more)", 183657416Smarkm EncryptDisable, 0, 1, 2 }, 183757416Smarkm { "type", "Set encryptiong type. ('encrypt type ?' for more)", 183857416Smarkm EncryptType, 0, 1, 1 }, 183957416Smarkm { "start", "Start encryption. ('encrypt start ?' for more)", 184057416Smarkm EncryptStart, 1, 0, 1 }, 184157416Smarkm { "stop", "Stop encryption. ('encrypt stop ?' for more)", 184257416Smarkm EncryptStop, 1, 0, 1 }, 184357416Smarkm { "input", "Start encrypting the input stream", 184457416Smarkm EncryptStartInput, 1, 0, 0 }, 184557416Smarkm { "-input", "Stop encrypting the input stream", 184657416Smarkm EncryptStopInput, 1, 0, 0 }, 184757416Smarkm { "output", "Start encrypting the output stream", 184857416Smarkm EncryptStartOutput, 1, 0, 0 }, 184957416Smarkm { "-output", "Stop encrypting the output stream", 185057416Smarkm EncryptStopOutput, 1, 0, 0 }, 185157416Smarkm 185257416Smarkm { "status", "Display current status of authentication information", 185357416Smarkm EncryptStatus, 0, 0, 0 }, 185457416Smarkm { "help", 0, EncryptHelp, 0, 0, 0 }, 185557416Smarkm { "?", "Print help information", EncryptHelp, 0, 0, 0 }, 185657416Smarkm { 0 }, 185757416Smarkm}; 185857416Smarkm 185957416Smarkmstatic int 186057416SmarkmEncryptHelp() 186157416Smarkm{ 186257416Smarkm struct encryptlist *c; 186357416Smarkm 186457416Smarkm for (c = EncryptList; c->name; c++) { 186557416Smarkm if (c->help) { 186657416Smarkm if (*c->help) 186757416Smarkm printf("%-15s %s\r\n", c->name, c->help); 186857416Smarkm else 186957416Smarkm printf("\r\n"); 187057416Smarkm } 187157416Smarkm } 187257416Smarkm return 0; 187357416Smarkm} 187457416Smarkm 187557416Smarkmstatic int 187657416Smarkmencrypt_cmd(int argc, char **argv) 187757416Smarkm{ 187857416Smarkm struct encryptlist *c; 187957416Smarkm 188057416Smarkm c = (struct encryptlist *) 188157416Smarkm genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist)); 188257416Smarkm if (c == 0) { 188357416Smarkm fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\r\n", 188457416Smarkm argv[1]); 188557416Smarkm return 0; 188657416Smarkm } 188757416Smarkm if (Ambiguous(c)) { 188857416Smarkm fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\r\n", 188957416Smarkm argv[1]); 189057416Smarkm return 0; 189157416Smarkm } 189257416Smarkm argc -= 2; 189357416Smarkm if (argc < c->minarg || argc > c->maxarg) { 189457416Smarkm if (c->minarg == c->maxarg) { 189557416Smarkm fprintf(stderr, "Need %s%d argument%s ", 189657416Smarkm c->minarg < argc ? "only " : "", c->minarg, 189757416Smarkm c->minarg == 1 ? "" : "s"); 189857416Smarkm } else { 189957416Smarkm fprintf(stderr, "Need %s%d-%d arguments ", 190057416Smarkm c->maxarg < argc ? "only " : "", c->minarg, c->maxarg); 190157416Smarkm } 190257416Smarkm fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\r\n", 190357416Smarkm c->name); 190457416Smarkm return 0; 190557416Smarkm } 190657416Smarkm if (c->needconnect && !connected) { 190757416Smarkm if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) { 190857416Smarkm printf("?Need to be connected first.\r\n"); 190957416Smarkm return 0; 191057416Smarkm } 191157416Smarkm } 191257416Smarkm return ((*c->handler)(argc > 0 ? argv[2] : 0, 191357416Smarkm argc > 1 ? argv[3] : 0, 191457416Smarkm argc > 2 ? argv[4] : 0)); 191557416Smarkm} 191657416Smarkm#endif 191757416Smarkm 191857416Smarkm 191957416Smarkm/* 192057416Smarkm * Print status about the connection. 192157416Smarkm */ 192257416Smarkm 192357416Smarkmstatic int 192457416Smarkmstatus(int argc, char **argv) 192557416Smarkm{ 192657416Smarkm if (connected) { 192757416Smarkm printf("Connected to %s.\r\n", hostname); 192857416Smarkm if ((argc < 2) || strcmp(argv[1], "notmuch")) { 192957416Smarkm int mode = getconnmode(); 193057416Smarkm 193157416Smarkm if (my_want_state_is_will(TELOPT_LINEMODE)) { 193257416Smarkm printf("Operating with LINEMODE option\r\n"); 193357416Smarkm printf("%s line editing\r\n", (mode&MODE_EDIT) ? "Local" : "No"); 193457416Smarkm printf("%s catching of signals\r\n", 193557416Smarkm (mode&MODE_TRAPSIG) ? "Local" : "No"); 193657416Smarkm slcstate(); 193757416Smarkm#ifdef KLUDGELINEMODE 193857416Smarkm } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 193957416Smarkm printf("Operating in obsolete linemode\r\n"); 194057416Smarkm#endif 194157416Smarkm } else { 194257416Smarkm printf("Operating in single character mode\r\n"); 194357416Smarkm if (localchars) 194457416Smarkm printf("Catching signals locally\r\n"); 194557416Smarkm } 194657416Smarkm printf("%s character echo\r\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 194757416Smarkm if (my_want_state_is_will(TELOPT_LFLOW)) 194857416Smarkm printf("%s flow control\r\n", (mode&MODE_FLOW) ? "Local" : "No"); 194957416Smarkm#if defined(ENCRYPTION) 195057416Smarkm encrypt_display(); 195157416Smarkm#endif 195257416Smarkm } 195357416Smarkm } else { 195457416Smarkm printf("No connection.\r\n"); 195557416Smarkm } 195657416Smarkm printf("Escape character is '%s'.\r\n", control(escape)); 195757416Smarkm fflush(stdout); 195857416Smarkm return 1; 195957416Smarkm} 196057416Smarkm 196157416Smarkm#ifdef SIGINFO 196257416Smarkm/* 196357416Smarkm * Function that gets called when SIGINFO is received. 196457416Smarkm */ 196578527SassarRETSIGTYPE 196657416Smarkmayt_status(int ignore) 196757416Smarkm{ 196857416Smarkm call(status, "status", "notmuch", 0); 196957416Smarkm} 197057416Smarkm#endif 197157416Smarkm 197257416Smarkmstatic Command *getcmd(char *name); 197357416Smarkm 197457416Smarkmstatic void 197557416Smarkmcmdrc(char *m1, char *m2) 197657416Smarkm{ 197757416Smarkm static char rcname[128]; 197857416Smarkm Command *c; 197957416Smarkm FILE *rcfile; 198057416Smarkm int gotmachine = 0; 198157416Smarkm int l1 = strlen(m1); 198257416Smarkm int l2 = strlen(m2); 198357416Smarkm char m1save[64]; 198457416Smarkm 198557416Smarkm if (skiprc) 198657416Smarkm return; 198757416Smarkm 198857416Smarkm strlcpy(m1save, m1, sizeof(m1save)); 198957416Smarkm m1 = m1save; 199057416Smarkm 199157416Smarkm if (rcname[0] == 0) { 199257416Smarkm char *home = getenv("HOME"); 199357416Smarkm 199457416Smarkm snprintf (rcname, sizeof(rcname), "%s/.telnetrc", 199557416Smarkm home ? home : ""); 199657416Smarkm } 199757416Smarkm 199857416Smarkm if ((rcfile = fopen(rcname, "r")) == 0) { 199957416Smarkm return; 200057416Smarkm } 200157416Smarkm 200257416Smarkm for (;;) { 200357416Smarkm if (fgets(line, sizeof(line), rcfile) == NULL) 200457416Smarkm break; 200557416Smarkm if (line[0] == 0) 200657416Smarkm break; 200757416Smarkm if (line[0] == '#') 200857416Smarkm continue; 200957416Smarkm if (gotmachine) { 2010178825Sdfr if (!isspace((unsigned char)line[0])) 201157416Smarkm gotmachine = 0; 201257416Smarkm } 201357416Smarkm if (gotmachine == 0) { 2014178825Sdfr if (isspace((unsigned char)line[0])) 201557416Smarkm continue; 201657416Smarkm if (strncasecmp(line, m1, l1) == 0) 201757416Smarkm strncpy(line, &line[l1], sizeof(line) - l1); 201857416Smarkm else if (strncasecmp(line, m2, l2) == 0) 201957416Smarkm strncpy(line, &line[l2], sizeof(line) - l2); 202057416Smarkm else if (strncasecmp(line, "DEFAULT", 7) == 0) 202157416Smarkm strncpy(line, &line[7], sizeof(line) - 7); 202257416Smarkm else 202357416Smarkm continue; 202457416Smarkm if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 202557416Smarkm continue; 202657416Smarkm gotmachine = 1; 202757416Smarkm } 202857416Smarkm makeargv(); 202957416Smarkm if (margv[0] == 0) 203057416Smarkm continue; 203157416Smarkm c = getcmd(margv[0]); 203257416Smarkm if (Ambiguous(c)) { 203357416Smarkm printf("?Ambiguous command: %s\r\n", margv[0]); 203457416Smarkm continue; 203557416Smarkm } 203657416Smarkm if (c == 0) { 203757416Smarkm printf("?Invalid command: %s\r\n", margv[0]); 203857416Smarkm continue; 203957416Smarkm } 204057416Smarkm /* 204157416Smarkm * This should never happen... 204257416Smarkm */ 204357416Smarkm if (c->needconnect && !connected) { 204457416Smarkm printf("?Need to be connected first for %s.\r\n", margv[0]); 204557416Smarkm continue; 204657416Smarkm } 204757416Smarkm (*c->handler)(margc, margv); 204857416Smarkm } 204957416Smarkm fclose(rcfile); 205057416Smarkm} 205157416Smarkm 205257416Smarkmint 205357416Smarkmtn(int argc, char **argv) 205457416Smarkm{ 205557416Smarkm struct servent *sp = 0; 205657416Smarkm char *cmd, *hostp = 0, *portp = 0; 205757416Smarkm char *user = 0; 205857416Smarkm int port = 0; 205957416Smarkm 206057416Smarkm /* clear the socket address prior to use */ 206157416Smarkm 206257416Smarkm if (connected) { 206357416Smarkm printf("?Already connected to %s\r\n", hostname); 206457416Smarkm return 0; 206557416Smarkm } 206657416Smarkm if (argc < 2) { 206757416Smarkm strlcpy(line, "open ", sizeof(line)); 206857416Smarkm printf("(to) "); 206957416Smarkm fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 207057416Smarkm makeargv(); 207157416Smarkm argc = margc; 207257416Smarkm argv = margv; 207357416Smarkm } 207457416Smarkm cmd = *argv; 207557416Smarkm --argc; ++argv; 207657416Smarkm while (argc) { 207757416Smarkm if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?")) 207857416Smarkm goto usage; 207957416Smarkm if (strcmp(*argv, "-l") == 0) { 208057416Smarkm --argc; ++argv; 208157416Smarkm if (argc == 0) 208257416Smarkm goto usage; 208357416Smarkm user = strdup(*argv++); 208457416Smarkm --argc; 208557416Smarkm continue; 208657416Smarkm } 208757416Smarkm if (strcmp(*argv, "-a") == 0) { 208857416Smarkm --argc; ++argv; 208957416Smarkm autologin = 1; 209057416Smarkm continue; 209157416Smarkm } 209257416Smarkm if (hostp == 0) { 209357416Smarkm hostp = *argv++; 209457416Smarkm --argc; 209557416Smarkm continue; 209657416Smarkm } 209757416Smarkm if (portp == 0) { 209857416Smarkm portp = *argv++; 209957416Smarkm --argc; 210057416Smarkm continue; 210157416Smarkm } 210257416Smarkm usage: 210357416Smarkm printf("usage: %s [-l user] [-a] host-name [port]\r\n", cmd); 210457416Smarkm return 0; 210557416Smarkm } 210657416Smarkm if (hostp == 0) 210757416Smarkm goto usage; 210857416Smarkm 210972445Sassar strlcpy (_hostname, hostp, sizeof(_hostname)); 211078527Sassar hostp = _hostname; 211172445Sassar if (hostp[0] == '@' || hostp[0] == '!') { 211272445Sassar char *p; 211372445Sassar hostname = NULL; 211472445Sassar for (p = hostp + 1; *p; p++) { 211572445Sassar if (*p == ',' || *p == '@') 211672445Sassar hostname = p; 211772445Sassar } 211872445Sassar if (hostname == NULL) { 211972445Sassar fprintf(stderr, "%s: bad source route specification\n", hostp); 212072445Sassar return 0; 212172445Sassar } 212272445Sassar *hostname++ = '\0'; 212372445Sassar } else 212472445Sassar hostname = hostp; 212572445Sassar 212657416Smarkm if (portp) { 212757416Smarkm if (*portp == '-') { 212857416Smarkm portp++; 212957416Smarkm telnetport = 1; 213057416Smarkm } else 213157416Smarkm telnetport = 0; 213257416Smarkm port = atoi(portp); 213357416Smarkm if (port == 0) { 213457416Smarkm sp = roken_getservbyname(portp, "tcp"); 213557416Smarkm if (sp) 213657416Smarkm port = sp->s_port; 213757416Smarkm else { 213857416Smarkm printf("%s: bad port number\r\n", portp); 213957416Smarkm return 0; 214057416Smarkm } 214157416Smarkm } else { 214257416Smarkm port = htons(port); 214357416Smarkm } 214457416Smarkm } else { 214557416Smarkm if (sp == 0) { 214657416Smarkm sp = roken_getservbyname("telnet", "tcp"); 214757416Smarkm if (sp == 0) { 214857416Smarkm fprintf(stderr, "telnet: tcp/telnet: unknown service\r\n"); 214957416Smarkm return 0; 215057416Smarkm } 215157416Smarkm port = sp->s_port; 215257416Smarkm } 215357416Smarkm telnetport = 1; 215457416Smarkm } 215557416Smarkm 215657416Smarkm { 215757416Smarkm struct addrinfo *ai, *a, hints; 215857416Smarkm int error; 215957416Smarkm char portstr[NI_MAXSERV]; 216057416Smarkm 216157416Smarkm memset (&hints, 0, sizeof(hints)); 216257416Smarkm hints.ai_socktype = SOCK_STREAM; 216357416Smarkm hints.ai_protocol = IPPROTO_TCP; 216457416Smarkm hints.ai_flags = AI_CANONNAME; 216557416Smarkm 216657416Smarkm snprintf (portstr, sizeof(portstr), "%u", ntohs(port)); 216757416Smarkm 216872445Sassar error = getaddrinfo (hostname, portstr, &hints, &ai); 216957416Smarkm if (error) { 217072445Sassar fprintf (stderr, "%s: %s\r\n", hostname, gai_strerror (error)); 217157416Smarkm return 0; 217257416Smarkm } 217357416Smarkm 217457416Smarkm for (a = ai; a != NULL && connected == 0; a = a->ai_next) { 217557416Smarkm char addrstr[256]; 217657416Smarkm 217757416Smarkm if (a->ai_canonname != NULL) 217857416Smarkm strlcpy (_hostname, a->ai_canonname, sizeof(_hostname)); 217957416Smarkm 218057416Smarkm if (getnameinfo (a->ai_addr, a->ai_addrlen, 218157416Smarkm addrstr, sizeof(addrstr), 218257416Smarkm NULL, 0, NI_NUMERICHOST) != 0) 218357416Smarkm strlcpy (addrstr, "unknown address", sizeof(addrstr)); 2184233294Sstas 218557416Smarkm printf("Trying %s...\r\n", addrstr); 218657416Smarkm 218757416Smarkm net = socket (a->ai_family, a->ai_socktype, a->ai_protocol); 218857416Smarkm if (net < 0) { 218972445Sassar warn ("socket"); 219057416Smarkm continue; 219157416Smarkm } 219272445Sassar 219357416Smarkm#if defined(IP_OPTIONS) && defined(IPPROTO_IP) && defined(HAVE_SETSOCKOPT) 219472445Sassar if (hostp[0] == '@' || hostp[0] == '!') { 219572445Sassar char *srp = 0; 219672445Sassar int srlen; 219772445Sassar int proto, opt; 219872445Sassar 219972445Sassar if ((srlen = sourceroute(a, hostp, &srp, &proto, &opt)) < 0) { 220072445Sassar (void) NetClose(net); 220172445Sassar net = -1; 220272445Sassar continue; 220372445Sassar } 220472445Sassar if (srp && setsockopt(net, proto, opt, srp, srlen) < 0) 220572445Sassar perror("setsockopt (source route)"); 220672445Sassar } 220757416Smarkm#endif 220872445Sassar 220957416Smarkm#if defined(IPPROTO_IP) && defined(IP_TOS) 221057419Smarkm if (a->ai_family == AF_INET) { 221157416Smarkm# if defined(HAVE_GETTOSBYNAME) 221257416Smarkm struct tosent *tp; 221357416Smarkm if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 221457416Smarkm tos = tp->t_tos; 221557416Smarkm# endif 221657416Smarkm if (tos < 0) 221757416Smarkm tos = 020; /* Low Delay bit */ 221857416Smarkm if (tos 221957416Smarkm && (setsockopt(net, IPPROTO_IP, IP_TOS, 222057416Smarkm (void *)&tos, sizeof(int)) < 0) 222157416Smarkm && (errno != ENOPROTOOPT)) 222257416Smarkm perror("telnet: setsockopt (IP_TOS) (ignored)"); 222357416Smarkm } 222457416Smarkm#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 222557416Smarkm if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 222657416Smarkm perror("setsockopt (SO_DEBUG)"); 222757416Smarkm } 222857416Smarkm 222957416Smarkm if (connect (net, a->ai_addr, a->ai_addrlen) < 0) { 223057416Smarkm fprintf (stderr, "telnet: connect to address %s: %s\n", 223157416Smarkm addrstr, strerror(errno)); 223257416Smarkm NetClose(net); 223357416Smarkm if (a->ai_next != NULL) { 223457416Smarkm continue; 223557416Smarkm } else { 223657416Smarkm freeaddrinfo (ai); 223757416Smarkm return 0; 223857416Smarkm } 223957416Smarkm } 224057416Smarkm ++connected; 224157416Smarkm#if defined(AUTHENTICATION) || defined(ENCRYPTION) 224257416Smarkm auth_encrypt_connect(connected); 224357416Smarkm#endif 224457416Smarkm } 224572445Sassar freeaddrinfo (ai); 224672445Sassar if (connected == 0) 224772445Sassar return 0; 224857416Smarkm } 224957416Smarkm cmdrc(hostp, hostname); 2250102644Snectar set_forward_options(); 225157416Smarkm if (autologin && user == NULL) 225257416Smarkm user = (char *)get_default_username (); 225357416Smarkm if (user) { 225457416Smarkm env_define((unsigned char *)"USER", (unsigned char *)user); 225557416Smarkm env_export((unsigned char *)"USER"); 225657416Smarkm } 225757416Smarkm call(status, "status", "notmuch", 0); 225857416Smarkm if (setjmp(peerdied) == 0) 225957416Smarkm my_telnet((char *)user); 226057416Smarkm NetClose(net); 226157416Smarkm ExitString("Connection closed by foreign host.\r\n",1); 226257416Smarkm /*NOTREACHED*/ 226357416Smarkm return 0; 226457416Smarkm} 226557416Smarkm 226657416Smarkm#define HELPINDENT ((int)sizeof ("connect")) 226757416Smarkm 226857416Smarkmstatic char 226957416Smarkm openhelp[] = "connect to a site", 227057416Smarkm closehelp[] = "close current connection", 227157416Smarkm logouthelp[] = "forcibly logout remote user and close the connection", 227257416Smarkm quithelp[] = "exit telnet", 227357416Smarkm statushelp[] = "print status information", 227457416Smarkm helphelp[] = "print help information", 227557416Smarkm sendhelp[] = "transmit special characters ('send ?' for more)", 227657416Smarkm sethelp[] = "set operating parameters ('set ?' for more)", 227757416Smarkm unsethelp[] = "unset operating parameters ('unset ?' for more)", 227857416Smarkm togglestring[] ="toggle operating parameters ('toggle ?' for more)", 227957416Smarkm slchelp[] = "change state of special charaters ('slc ?' for more)", 228057416Smarkm displayhelp[] = "display operating parameters", 228157416Smarkm#if defined(AUTHENTICATION) 228257416Smarkm authhelp[] = "turn on (off) authentication ('auth ?' for more)", 228357416Smarkm#endif 228457416Smarkm#if defined(ENCRYPTION) 228557416Smarkm encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)", 228657416Smarkm#endif 228757416Smarkm zhelp[] = "suspend telnet", 228857416Smarkm shellhelp[] = "invoke a subshell", 228957416Smarkm envhelp[] = "change environment variables ('environ ?' for more)", 229057416Smarkm modestring[] = "try to enter line or character mode ('mode ?' for more)"; 229157416Smarkm 229257416Smarkmstatic int help(int argc, char **argv); 229357416Smarkm 229457416Smarkmstatic Command cmdtab[] = { 229557416Smarkm { "close", closehelp, bye, 1 }, 229657416Smarkm { "logout", logouthelp, logout, 1 }, 229757416Smarkm { "display", displayhelp, display, 0 }, 229857416Smarkm { "mode", modestring, modecmd, 0 }, 229957416Smarkm { "open", openhelp, tn, 0 }, 230057416Smarkm { "quit", quithelp, quit, 0 }, 230157416Smarkm { "send", sendhelp, sendcmd, 0 }, 230257416Smarkm { "set", sethelp, setcmd, 0 }, 230357416Smarkm { "unset", unsethelp, unsetcmd, 0 }, 230457416Smarkm { "status", statushelp, status, 0 }, 230557416Smarkm { "toggle", togglestring, toggle, 0 }, 230657416Smarkm { "slc", slchelp, slccmd, 0 }, 230757416Smarkm#if defined(AUTHENTICATION) 230857416Smarkm { "auth", authhelp, auth_cmd, 0 }, 230957416Smarkm#endif 231057416Smarkm#if defined(ENCRYPTION) 231157416Smarkm { "encrypt", encrypthelp, encrypt_cmd, 0 }, 231257416Smarkm#endif 231357416Smarkm { "z", zhelp, telnetsuspend, 0 }, 231457416Smarkm { "!", shellhelp, shell, 0 }, 231557416Smarkm { "environ", envhelp, env_cmd, 0 }, 231657416Smarkm { "?", helphelp, help, 0 }, 231757416Smarkm { 0, 0, 0, 0 } 231857416Smarkm}; 231957416Smarkm 232057416Smarkmstatic char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; 232157416Smarkmstatic char escapehelp[] = "deprecated command -- use 'set escape' instead"; 232257416Smarkm 232357416Smarkmstatic Command cmdtab2[] = { 232457416Smarkm { "help", 0, help, 0 }, 232557416Smarkm { "escape", escapehelp, setescape, 0 }, 232657416Smarkm { "crmod", crmodhelp, togcrmod, 0 }, 232757416Smarkm { 0, 0, 0, 0 } 232857416Smarkm}; 232957416Smarkm 233057416Smarkm 233157416Smarkm/* 233257416Smarkm * Call routine with argc, argv set from args (terminated by 0). 233357416Smarkm */ 233457416Smarkm 233557416Smarkmstatic int 233657416Smarkmcall(intrtn_t routine, ...) 233757416Smarkm{ 233857416Smarkm va_list ap; 233957416Smarkm char *args[100]; 234057416Smarkm int argno = 0; 234157416Smarkm 234257416Smarkm va_start(ap, routine); 234357416Smarkm while ((args[argno++] = va_arg(ap, char *)) != 0); 234457416Smarkm va_end(ap); 234557416Smarkm return (*routine)(argno-1, args); 234657416Smarkm} 234757416Smarkm 234857416Smarkm 234957416Smarkmstatic Command 235057416Smarkm*getcmd(char *name) 235157416Smarkm{ 235257416Smarkm Command *cm; 235357416Smarkm 235457416Smarkm if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command)))) 235557416Smarkm return cm; 235657416Smarkm return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 235757416Smarkm} 235857416Smarkm 235957416Smarkmvoid 236057416Smarkmcommand(int top, char *tbuf, int cnt) 236157416Smarkm{ 236257416Smarkm Command *c; 236357416Smarkm 236457416Smarkm setcommandmode(); 236557416Smarkm if (!top) { 236657416Smarkm putchar('\n'); 236757416Smarkm } else { 236857416Smarkm signal(SIGINT, SIG_DFL); 236957416Smarkm signal(SIGQUIT, SIG_DFL); 237057416Smarkm } 237157416Smarkm for (;;) { 237257416Smarkm if (rlogin == _POSIX_VDISABLE) 237357416Smarkm printf("%s> ", prompt); 237457416Smarkm if (tbuf) { 237557416Smarkm char *cp; 237657416Smarkm cp = line; 237757416Smarkm while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 237857416Smarkm cnt--; 237957416Smarkm tbuf = 0; 238057416Smarkm if (cp == line || *--cp != '\n' || cp == line) 238157416Smarkm goto getline; 238257416Smarkm *cp = '\0'; 238357416Smarkm if (rlogin == _POSIX_VDISABLE) 238457416Smarkm printf("%s\r\n", line); 238557416Smarkm } else { 238657416Smarkm getline: 238757416Smarkm if (rlogin != _POSIX_VDISABLE) 238857416Smarkm printf("%s> ", prompt); 238957416Smarkm if (fgets(line, sizeof(line), stdin) == NULL) { 239057416Smarkm if (feof(stdin) || ferror(stdin)) { 239157416Smarkm quit(); 239257416Smarkm /*NOTREACHED*/ 239357416Smarkm } 239457416Smarkm break; 239557416Smarkm } 239657416Smarkm } 239757416Smarkm if (line[0] == 0) 239857416Smarkm break; 239957416Smarkm makeargv(); 240057416Smarkm if (margv[0] == 0) { 240157416Smarkm break; 240257416Smarkm } 240357416Smarkm c = getcmd(margv[0]); 240457416Smarkm if (Ambiguous(c)) { 240557416Smarkm printf("?Ambiguous command\r\n"); 240657416Smarkm continue; 240757416Smarkm } 240857416Smarkm if (c == 0) { 240957416Smarkm printf("?Invalid command\r\n"); 241057416Smarkm continue; 241157416Smarkm } 241257416Smarkm if (c->needconnect && !connected) { 241357416Smarkm printf("?Need to be connected first.\r\n"); 241457416Smarkm continue; 241557416Smarkm } 241657416Smarkm if ((*c->handler)(margc, margv)) { 241757416Smarkm break; 241857416Smarkm } 241957416Smarkm } 242057416Smarkm if (!top) { 242157416Smarkm if (!connected) { 242257416Smarkm longjmp(toplevel, 1); 242357416Smarkm /*NOTREACHED*/ 242457416Smarkm } 242557416Smarkm setconnmode(0); 242657416Smarkm } 242757416Smarkm} 242857416Smarkm 242957416Smarkm/* 243057416Smarkm * Help command. 243157416Smarkm */ 243257416Smarkmstatic int 243357416Smarkmhelp(int argc, char **argv) 243457416Smarkm{ 243557416Smarkm Command *c; 243657416Smarkm 243757416Smarkm if (argc == 1) { 243857416Smarkm printf("Commands may be abbreviated. Commands are:\r\n\r\n"); 243957416Smarkm for (c = cmdtab; c->name; c++) 244057416Smarkm if (c->help) { 244157416Smarkm printf("%-*s\t%s\r\n", HELPINDENT, c->name, 244257416Smarkm c->help); 244357416Smarkm } 244457416Smarkm return 0; 244557416Smarkm } 244657416Smarkm while (--argc > 0) { 244757416Smarkm char *arg; 244857416Smarkm arg = *++argv; 244957416Smarkm c = getcmd(arg); 245057416Smarkm if (Ambiguous(c)) 245157416Smarkm printf("?Ambiguous help command %s\r\n", arg); 245257416Smarkm else if (c == (Command *)0) 245357416Smarkm printf("?Invalid help command %s\r\n", arg); 245457416Smarkm else 245557416Smarkm printf("%s\r\n", c->help); 245657416Smarkm } 245757416Smarkm return 0; 245857416Smarkm} 245957416Smarkm 246057416Smarkm 246157416Smarkm#if defined(IP_OPTIONS) && defined(IPPROTO_IP) 246257416Smarkm 246357416Smarkm/* 246457416Smarkm * Source route is handed in as 246572445Sassar * [!]@hop1@hop2...@dst 246657416Smarkm * 246772445Sassar * If the leading ! is present, it is a strict source route, otherwise it is 246872445Sassar * assmed to be a loose source route. Note that leading ! is effective 246972445Sassar * only for IPv4 case. 247072445Sassar * 247157416Smarkm * We fill in the source route option as 247257416Smarkm * hop1,hop2,hop3...dest 247357416Smarkm * and return a pointer to hop1, which will 247457416Smarkm * be the address to connect() to. 247557416Smarkm * 247657416Smarkm * Arguments: 247772445Sassar * ai: The address (by struct addrinfo) for the final destination. 247857416Smarkm * 247972445Sassar * arg: Pointer to route list to decipher 248057416Smarkm * 248172445Sassar * cpp: Pointer to a pointer, so that sourceroute() can return 248272445Sassar * the address of result buffer (statically alloc'ed). 248372445Sassar * 248472445Sassar * protop/optp: 248572445Sassar * Pointer to an integer. The pointed variable 248657416Smarkm * lenp: pointer to an integer that contains the 248757416Smarkm * length of *cpp if *cpp != NULL. 248857416Smarkm * 248957416Smarkm * Return values: 249057416Smarkm * 249172445Sassar * Returns the length of the option pointed to by *cpp. If the 249257416Smarkm * return value is -1, there was a syntax error in the 249372445Sassar * option, either arg contained unknown characters or too many hosts, 249472445Sassar * or hostname cannot be resolved. 249557416Smarkm * 249672445Sassar * The caller needs to pass return value (len), *cpp, *protop and *optp 249772445Sassar * to setsockopt(2). 249857416Smarkm * 249972445Sassar * *cpp: Points to the result buffer. The region is statically 250072445Sassar * allocated by the function. 250157416Smarkm * 250272445Sassar * *protop: 250372445Sassar * protocol # to be passed to setsockopt(2). 250472445Sassar * 250572445Sassar * *optp: option # to be passed to setsockopt(2). 250672445Sassar * 250757416Smarkm */ 250872445Sassarint 250972445Sassarsourceroute(struct addrinfo *ai, 251072445Sassar char *arg, 251172445Sassar char **cpp, 251272445Sassar int *protop, 251372445Sassar int *optp) 251457416Smarkm{ 2515102644Snectar char *cp, *cp2, *lsrp = NULL, *lsrep = NULL; 251672445Sassar struct addrinfo hints, *res; 251772445Sassar int len, error; 251872445Sassar struct sockaddr_in *sin; 251972445Sassar register char c; 252057416Smarkm static char lsr[44]; 252172445Sassar#ifdef INET6 2522102644Snectar struct cmsghdr *cmsg = NULL; 252372445Sassar struct sockaddr_in6 *sin6; 252472445Sassar static char rhbuf[1024]; 252572445Sassar#endif 252657416Smarkm 252757416Smarkm /* 252872445Sassar * Verify the arguments. 252957416Smarkm */ 253072445Sassar if (cpp == NULL) 253172445Sassar return -1; 253257416Smarkm 253357416Smarkm cp = arg; 253457416Smarkm 253572445Sassar *cpp = NULL; 253672445Sassar switch (ai->ai_family) { 253772445Sassar case AF_INET: 253872445Sassar lsrp = lsr; 253972445Sassar lsrep = lsrp + sizeof(lsr); 254072445Sassar 254172445Sassar /* 254272445Sassar * Next, decide whether we have a loose source 254372445Sassar * route or a strict source route, and fill in 254472445Sassar * the begining of the option. 254572445Sassar */ 254672445Sassar if (*cp == '!') { 254772445Sassar cp++; 254872445Sassar *lsrp++ = IPOPT_SSRR; 254972445Sassar } else 255072445Sassar *lsrp++ = IPOPT_LSRR; 255172445Sassar if (*cp != '@') 255272445Sassar return -1; 255372445Sassar lsrp++; /* skip over length, we'll fill it in later */ 255472445Sassar *lsrp++ = 4; 255557416Smarkm cp++; 255672445Sassar *protop = IPPROTO_IP; 255772445Sassar *optp = IP_OPTIONS; 255872445Sassar break; 255972445Sassar#ifdef INET6 256072445Sassar case AF_INET6: 256172445Sassar/* this needs to be updated for rfc2292bis */ 256272445Sassar#ifdef IPV6_PKTOPTIONS 256372445Sassar cmsg = inet6_rthdr_init(rhbuf, IPV6_RTHDR_TYPE_0); 256472445Sassar if (*cp != '@') 256572445Sassar return -1; 256672445Sassar cp++; 256772445Sassar *protop = IPPROTO_IPV6; 256872445Sassar *optp = IPV6_PKTOPTIONS; 256972445Sassar break; 257072445Sassar#else 257172445Sassar return -1; 257272445Sassar#endif 257372445Sassar#endif 257472445Sassar default: 257572445Sassar return -1; 257672445Sassar } 257757416Smarkm 257872445Sassar memset(&hints, 0, sizeof(hints)); 257972445Sassar hints.ai_family = ai->ai_family; 258072445Sassar hints.ai_socktype = SOCK_STREAM; 258157416Smarkm 258257416Smarkm for (c = 0;;) { 258357416Smarkm if (c == ':') 258457416Smarkm cp2 = 0; 258572445Sassar else for (cp2 = cp; (c = *cp2) != '\0'; cp2++) { 258657416Smarkm if (c == ',') { 258757416Smarkm *cp2++ = '\0'; 258857416Smarkm if (*cp2 == '@') 258957416Smarkm cp2++; 259057416Smarkm } else if (c == '@') { 259157416Smarkm *cp2++ = '\0'; 259272445Sassar } 259372445Sassar#if 0 /*colon conflicts with IPv6 address*/ 259472445Sassar else if (c == ':') { 259557416Smarkm *cp2++ = '\0'; 259672445Sassar } 259772445Sassar#endif 259872445Sassar else 259957416Smarkm continue; 260057416Smarkm break; 260157416Smarkm } 260257416Smarkm if (!c) 260357416Smarkm cp2 = 0; 260457416Smarkm 260572445Sassar error = getaddrinfo(cp, NULL, &hints, &res); 260672445Sassar if (error) { 260772445Sassar fprintf(stderr, "%s: %s\n", cp, gai_strerror(error)); 260872445Sassar return -1; 260957416Smarkm } 261072445Sassar if (ai->ai_family != res->ai_family) { 261172445Sassar freeaddrinfo(res); 261272445Sassar return -1; 261372445Sassar } 261472445Sassar if (ai->ai_family == AF_INET) { 261572445Sassar /* 261672445Sassar * Check to make sure there is space for address 261772445Sassar */ 261872445Sassar if (lsrp + 4 > lsrep) { 261972445Sassar freeaddrinfo(res); 262072445Sassar return -1; 262172445Sassar } 262272445Sassar sin = (struct sockaddr_in *)res->ai_addr; 262372445Sassar memcpy(lsrp, &sin->sin_addr, sizeof(struct in_addr)); 262472445Sassar lsrp += sizeof(struct in_addr); 262572445Sassar } 262672445Sassar#ifdef INET6 262772445Sassar else if (ai->ai_family == AF_INET6) { 262872445Sassar sin6 = (struct sockaddr_in6 *)res->ai_addr; 262972445Sassar inet6_rthdr_add(cmsg, &sin6->sin6_addr, 263072445Sassar IPV6_RTHDR_LOOSE); 263172445Sassar } 263272445Sassar#endif 263372445Sassar else { 263472445Sassar freeaddrinfo(res); 263572445Sassar return -1; 263672445Sassar } 263772445Sassar freeaddrinfo(res); 263857416Smarkm if (cp2) 263957416Smarkm cp = cp2; 264057416Smarkm else 264157416Smarkm break; 264272445Sassar } 264372445Sassar if (ai->ai_family == AF_INET) { 264472445Sassar /* record the last hop */ 264557416Smarkm if (lsrp + 4 > lsrep) 264672445Sassar return -1; 264772445Sassar sin = (struct sockaddr_in *)ai->ai_addr; 264872445Sassar memcpy(lsrp, &sin->sin_addr, sizeof(struct in_addr)); 264972445Sassar lsrp += sizeof(struct in_addr); 265072445Sassar#ifndef sysV88 265172445Sassar lsr[IPOPT_OLEN] = lsrp - lsr; 265272445Sassar if (lsr[IPOPT_OLEN] <= 7 || lsr[IPOPT_OLEN] > 40) 265372445Sassar return -1; 265472445Sassar *lsrp++ = IPOPT_NOP; /*32bit word align*/ 265572445Sassar len = lsrp - lsr; 265672445Sassar *cpp = lsr; 265772445Sassar#else 265872445Sassar ipopt.io_len = lsrp - lsr; 265972445Sassar if (ipopt.io_len <= 5) /*is 3 better?*/ 266072445Sassar return -1; 266172445Sassar *cpp = (char 8)&ipopt; 266272445Sassar#endif 266357416Smarkm } 266472445Sassar#ifdef INET6 266572445Sassar else if (ai->ai_family == AF_INET6) { 266672445Sassar inet6_rthdr_lasthop(cmsg, IPV6_RTHDR_LOOSE); 266772445Sassar len = cmsg->cmsg_len; 266872445Sassar *cpp = rhbuf; 266957416Smarkm } 267072445Sassar#endif 267172445Sassar else 267272445Sassar return -1; 267372445Sassar return len; 267457416Smarkm} 267557416Smarkm#endif 2676