commands.c revision 78527
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 3678527SassarRCSID("$Id: commands.c,v 1.65 2001/02/20 03:12:09 assar Exp $"); 3757416Smarkm 3857416Smarkm#if defined(IPPROTO_IP) && defined(IP_TOS) 3957416Smarkmint tos = -1; 4057416Smarkm#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 4157416Smarkm 4257416Smarkmchar *hostname; 4357416Smarkmstatic char _hostname[MaxHostNameLen]; 4457416Smarkm 4557416Smarkmtypedef int (*intrtn_t)(int, char**); 4657416Smarkmstatic int call(intrtn_t, ...); 4757416Smarkm 4857416Smarkmtypedef struct { 4957416Smarkm char *name; /* command name */ 5057416Smarkm char *help; /* help string (NULL for no help) */ 5157416Smarkm int (*handler)(); /* routine which executes command */ 5257416Smarkm int needconnect; /* Do we need to be connected to execute? */ 5357416Smarkm} Command; 5457416Smarkm 5557416Smarkmstatic char line[256]; 5657416Smarkmstatic char saveline[256]; 5757416Smarkmstatic int margc; 5857416Smarkmstatic char *margv[20]; 5957416Smarkm 6057416Smarkmstatic void 6157416Smarkmmakeargv() 6257416Smarkm{ 6357416Smarkm char *cp, *cp2, c; 6457416Smarkm char **argp = margv; 6557416Smarkm 6657416Smarkm margc = 0; 6757416Smarkm cp = line; 6857416Smarkm if (*cp == '!') { /* Special case shell escape */ 6957416Smarkm /* save for shell command */ 7057416Smarkm strlcpy(saveline, line, sizeof(saveline)); 7157416Smarkm *argp++ = "!"; /* No room in string to get this */ 7257416Smarkm margc++; 7357416Smarkm cp++; 7457416Smarkm } 7557416Smarkm while ((c = *cp)) { 7657416Smarkm int inquote = 0; 7757416Smarkm while (isspace(c)) 7857416Smarkm c = *++cp; 7957416Smarkm if (c == '\0') 8057416Smarkm break; 8157416Smarkm *argp++ = cp; 8257416Smarkm margc += 1; 8357416Smarkm for (cp2 = cp; c != '\0'; c = *++cp) { 8457416Smarkm if (inquote) { 8557416Smarkm if (c == inquote) { 8657416Smarkm inquote = 0; 8757416Smarkm continue; 8857416Smarkm } 8957416Smarkm } else { 9057416Smarkm if (c == '\\') { 9157416Smarkm if ((c = *++cp) == '\0') 9257416Smarkm break; 9357416Smarkm } else if (c == '"') { 9457416Smarkm inquote = '"'; 9557416Smarkm continue; 9657416Smarkm } else if (c == '\'') { 9757416Smarkm inquote = '\''; 9857416Smarkm continue; 9957416Smarkm } else if (isspace(c)) 10057416Smarkm break; 10157416Smarkm } 10257416Smarkm *cp2++ = c; 10357416Smarkm } 10457416Smarkm *cp2 = '\0'; 10557416Smarkm if (c == '\0') 10657416Smarkm break; 10757416Smarkm cp++; 10857416Smarkm } 10957416Smarkm *argp++ = 0; 11057416Smarkm} 11157416Smarkm 11257416Smarkm/* 11357416Smarkm * Make a character string into a number. 11457416Smarkm * 11557416Smarkm * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). 11657416Smarkm */ 11757416Smarkm 11857416Smarkmstatic char 11957416Smarkmspecial(char *s) 12057416Smarkm{ 12157416Smarkm char c; 12257416Smarkm char b; 12357416Smarkm 12457416Smarkm switch (*s) { 12557416Smarkm case '^': 12657416Smarkm b = *++s; 12757416Smarkm if (b == '?') { 12857416Smarkm c = b | 0x40; /* DEL */ 12957416Smarkm } else { 13057416Smarkm c = b & 0x1f; 13157416Smarkm } 13257416Smarkm break; 13357416Smarkm default: 13457416Smarkm c = *s; 13557416Smarkm break; 13657416Smarkm } 13757416Smarkm return c; 13857416Smarkm} 13957416Smarkm 14057416Smarkm/* 14157416Smarkm * Construct a control character sequence 14257416Smarkm * for a special character. 14357416Smarkm */ 14457416Smarkmstatic char * 14557416Smarkmcontrol(cc_t c) 14657416Smarkm{ 14757416Smarkm static char buf[5]; 14857416Smarkm /* 14957416Smarkm * The only way I could get the Sun 3.5 compiler 15057416Smarkm * to shut up about 15157416Smarkm * if ((unsigned int)c >= 0x80) 15257416Smarkm * was to assign "c" to an unsigned int variable... 15357416Smarkm * Arggg.... 15457416Smarkm */ 15557416Smarkm unsigned int uic = (unsigned int)c; 15657416Smarkm 15757416Smarkm if (uic == 0x7f) 15857416Smarkm return ("^?"); 15957416Smarkm if (c == (cc_t)_POSIX_VDISABLE) { 16057416Smarkm return "off"; 16157416Smarkm } 16257416Smarkm if (uic >= 0x80) { 16357416Smarkm buf[0] = '\\'; 16457416Smarkm buf[1] = ((c>>6)&07) + '0'; 16557416Smarkm buf[2] = ((c>>3)&07) + '0'; 16657416Smarkm buf[3] = (c&07) + '0'; 16757416Smarkm buf[4] = 0; 16857416Smarkm } else if (uic >= 0x20) { 16957416Smarkm buf[0] = c; 17057416Smarkm buf[1] = 0; 17157416Smarkm } else { 17257416Smarkm buf[0] = '^'; 17357416Smarkm buf[1] = '@'+c; 17457416Smarkm buf[2] = 0; 17557416Smarkm } 17657416Smarkm return (buf); 17757416Smarkm} 17857416Smarkm 17957416Smarkm 18057416Smarkm 18157416Smarkm/* 18257416Smarkm * The following are data structures and routines for 18357416Smarkm * the "send" command. 18457416Smarkm * 18557416Smarkm */ 18657416Smarkm 18757416Smarkmstruct sendlist { 18857416Smarkm char *name; /* How user refers to it (case independent) */ 18957416Smarkm char *help; /* Help information (0 ==> no help) */ 19057416Smarkm int needconnect; /* Need to be connected */ 19157416Smarkm int narg; /* Number of arguments */ 19257416Smarkm int (*handler)(); /* Routine to perform (for special ops) */ 19357416Smarkm int nbyte; /* Number of bytes to send this command */ 19457416Smarkm int what; /* Character to be sent (<0 ==> special) */ 19557416Smarkm}; 19657416Smarkm 19757416Smarkm 19857416Smarkmstatic int 19957416Smarkm send_esc (void), 20057416Smarkm send_help (void), 20157416Smarkm send_docmd (char *), 20257416Smarkm send_dontcmd (char *), 20357416Smarkm send_willcmd (char *), 20457416Smarkm send_wontcmd (char *); 20557416Smarkm 20657416Smarkmstatic struct sendlist Sendlist[] = { 20757416Smarkm { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO }, 20857416Smarkm { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT }, 20957416Smarkm { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK }, 21057416Smarkm { "break", 0, 1, 0, 0, 2, BREAK }, 21157416Smarkm { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC }, 21257416Smarkm { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL }, 21357416Smarkm { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 }, 21457416Smarkm { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA }, 21557416Smarkm { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP }, 21657416Smarkm { "intp", 0, 1, 0, 0, 2, IP }, 21757416Smarkm { "interrupt", 0, 1, 0, 0, 2, IP }, 21857416Smarkm { "intr", 0, 1, 0, 0, 2, IP }, 21957416Smarkm { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP }, 22057416Smarkm { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR }, 22157416Smarkm { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT }, 22257416Smarkm { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP }, 22357416Smarkm { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF }, 22457416Smarkm { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 }, 22557416Smarkm { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 }, 22657416Smarkm { "?", "Display send options", 0, 0, send_help, 0, 0 }, 22757416Smarkm { "help", 0, 0, 0, send_help, 0, 0 }, 22857416Smarkm { "do", 0, 0, 1, send_docmd, 3, 0 }, 22957416Smarkm { "dont", 0, 0, 1, send_dontcmd, 3, 0 }, 23057416Smarkm { "will", 0, 0, 1, send_willcmd, 3, 0 }, 23157416Smarkm { "wont", 0, 0, 1, send_wontcmd, 3, 0 }, 23257416Smarkm { 0 } 23357416Smarkm}; 23457416Smarkm 23557416Smarkm#define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \ 23657416Smarkm sizeof(struct sendlist))) 23757416Smarkm 23857416Smarkmstatic int 23957416Smarkmsendcmd(int argc, char **argv) 24057416Smarkm{ 24157416Smarkm int count; /* how many bytes we are going to need to send */ 24257416Smarkm int i; 24357416Smarkm struct sendlist *s; /* pointer to current command */ 24457416Smarkm int success = 0; 24557416Smarkm int needconnect = 0; 24657416Smarkm 24757416Smarkm if (argc < 2) { 24857416Smarkm printf("need at least one argument for 'send' command\r\n"); 24957416Smarkm printf("'send ?' for help\r\n"); 25057416Smarkm return 0; 25157416Smarkm } 25257416Smarkm /* 25357416Smarkm * First, validate all the send arguments. 25457416Smarkm * In addition, we see how much space we are going to need, and 25557416Smarkm * whether or not we will be doing a "SYNCH" operation (which 25657416Smarkm * flushes the network queue). 25757416Smarkm */ 25857416Smarkm count = 0; 25957416Smarkm for (i = 1; i < argc; i++) { 26057416Smarkm s = GETSEND(argv[i]); 26157416Smarkm if (s == 0) { 26257416Smarkm printf("Unknown send argument '%s'\r\n'send ?' for help.\r\n", 26357416Smarkm argv[i]); 26457416Smarkm return 0; 26557416Smarkm } else if (Ambiguous(s)) { 26657416Smarkm printf("Ambiguous send argument '%s'\r\n'send ?' for help.\r\n", 26757416Smarkm argv[i]); 26857416Smarkm return 0; 26957416Smarkm } 27057416Smarkm if (i + s->narg >= argc) { 27157416Smarkm fprintf(stderr, 27257416Smarkm "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\r\n", 27357416Smarkm s->narg, s->narg == 1 ? "" : "s", s->name, s->name); 27457416Smarkm return 0; 27557416Smarkm } 27657416Smarkm count += s->nbyte; 27757416Smarkm if (s->handler == send_help) { 27857416Smarkm send_help(); 27957416Smarkm return 0; 28057416Smarkm } 28157416Smarkm 28257416Smarkm i += s->narg; 28357416Smarkm needconnect += s->needconnect; 28457416Smarkm } 28557416Smarkm if (!connected && needconnect) { 28657416Smarkm printf("?Need to be connected first.\r\n"); 28757416Smarkm printf("'send ?' for help\r\n"); 28857416Smarkm return 0; 28957416Smarkm } 29057416Smarkm /* Now, do we have enough room? */ 29157416Smarkm if (NETROOM() < count) { 29257416Smarkm printf("There is not enough room in the buffer TO the network\r\n"); 29357416Smarkm printf("to process your request. Nothing will be done.\r\n"); 29457416Smarkm printf("('send synch' will throw away most data in the network\r\n"); 29557416Smarkm printf("buffer, if this might help.)\r\n"); 29657416Smarkm return 0; 29757416Smarkm } 29857416Smarkm /* OK, they are all OK, now go through again and actually send */ 29957416Smarkm count = 0; 30057416Smarkm for (i = 1; i < argc; i++) { 30157416Smarkm if ((s = GETSEND(argv[i])) == 0) { 30257416Smarkm fprintf(stderr, "Telnet 'send' error - argument disappeared!\r\n"); 30357416Smarkm quit(); 30457416Smarkm /*NOTREACHED*/ 30557416Smarkm } 30657416Smarkm if (s->handler) { 30757416Smarkm count++; 30857416Smarkm success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0, 30957416Smarkm (s->narg > 1) ? argv[i+2] : 0); 31057416Smarkm i += s->narg; 31157416Smarkm } else { 31257416Smarkm NET2ADD(IAC, s->what); 31357416Smarkm printoption("SENT", IAC, s->what); 31457416Smarkm } 31557416Smarkm } 31657416Smarkm return (count == success); 31757416Smarkm} 31857416Smarkm 31957416Smarkmstatic int 32057416Smarkmsend_tncmd(void (*func)(), char *cmd, char *name); 32157416Smarkm 32257416Smarkmstatic int 32357416Smarkmsend_esc() 32457416Smarkm{ 32557416Smarkm NETADD(escape); 32657416Smarkm return 1; 32757416Smarkm} 32857416Smarkm 32957416Smarkmstatic int 33057416Smarkmsend_docmd(char *name) 33157416Smarkm{ 33257416Smarkm return(send_tncmd(send_do, "do", name)); 33357416Smarkm} 33457416Smarkm 33557416Smarkmstatic int 33657416Smarkmsend_dontcmd(char *name) 33757416Smarkm{ 33857416Smarkm return(send_tncmd(send_dont, "dont", name)); 33957416Smarkm} 34057416Smarkm 34157416Smarkmstatic int 34257416Smarkmsend_willcmd(char *name) 34357416Smarkm{ 34457416Smarkm return(send_tncmd(send_will, "will", name)); 34557416Smarkm} 34657416Smarkm 34757416Smarkmstatic int 34857416Smarkmsend_wontcmd(char *name) 34957416Smarkm{ 35057416Smarkm return(send_tncmd(send_wont, "wont", name)); 35157416Smarkm} 35257416Smarkm 35357416Smarkmstatic int 35457416Smarkmsend_tncmd(void (*func)(), char *cmd, char *name) 35557416Smarkm{ 35657416Smarkm char **cpp; 35757416Smarkm extern char *telopts[]; 35857416Smarkm int val = 0; 35957416Smarkm 36057416Smarkm if (isprefix(name, "help") || isprefix(name, "?")) { 36157416Smarkm int col, len; 36257416Smarkm 36357416Smarkm printf("Usage: send %s <value|option>\r\n", cmd); 36457416Smarkm printf("\"value\" must be from 0 to 255\r\n"); 36557416Smarkm printf("Valid options are:\r\n\t"); 36657416Smarkm 36757416Smarkm col = 8; 36857416Smarkm for (cpp = telopts; *cpp; cpp++) { 36957416Smarkm len = strlen(*cpp) + 3; 37057416Smarkm if (col + len > 65) { 37157416Smarkm printf("\r\n\t"); 37257416Smarkm col = 8; 37357416Smarkm } 37457416Smarkm printf(" \"%s\"", *cpp); 37557416Smarkm col += len; 37657416Smarkm } 37757416Smarkm printf("\r\n"); 37857416Smarkm return 0; 37957416Smarkm } 38057416Smarkm cpp = genget(name, telopts, sizeof(char *)); 38157416Smarkm if (Ambiguous(cpp)) { 38257416Smarkm fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\r\n", 38357416Smarkm name, cmd); 38457416Smarkm return 0; 38557416Smarkm } 38657416Smarkm if (cpp) { 38757416Smarkm val = cpp - telopts; 38857416Smarkm } else { 38957416Smarkm char *cp = name; 39057416Smarkm 39157416Smarkm while (*cp >= '0' && *cp <= '9') { 39257416Smarkm val *= 10; 39357416Smarkm val += *cp - '0'; 39457416Smarkm cp++; 39557416Smarkm } 39657416Smarkm if (*cp != 0) { 39757416Smarkm fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\r\n", 39857416Smarkm name, cmd); 39957416Smarkm return 0; 40057416Smarkm } else if (val < 0 || val > 255) { 40157416Smarkm fprintf(stderr, "'%s': bad value ('send %s ?' for help).\r\n", 40257416Smarkm name, cmd); 40357416Smarkm return 0; 40457416Smarkm } 40557416Smarkm } 40657416Smarkm if (!connected) { 40757416Smarkm printf("?Need to be connected first.\r\n"); 40857416Smarkm return 0; 40957416Smarkm } 41057416Smarkm (*func)(val, 1); 41157416Smarkm return 1; 41257416Smarkm} 41357416Smarkm 41457416Smarkmstatic int 41557416Smarkmsend_help() 41657416Smarkm{ 41757416Smarkm struct sendlist *s; /* pointer to current command */ 41857416Smarkm for (s = Sendlist; s->name; s++) { 41957416Smarkm if (s->help) 42057416Smarkm printf("%-15s %s\r\n", s->name, s->help); 42157416Smarkm } 42257416Smarkm return(0); 42357416Smarkm} 42457416Smarkm 42557416Smarkm/* 42657416Smarkm * The following are the routines and data structures referred 42757416Smarkm * to by the arguments to the "toggle" command. 42857416Smarkm */ 42957416Smarkm 43057416Smarkmstatic int 43157416Smarkmlclchars() 43257416Smarkm{ 43357416Smarkm donelclchars = 1; 43457416Smarkm return 1; 43557416Smarkm} 43657416Smarkm 43757416Smarkmstatic int 43857416Smarkmtogdebug() 43957416Smarkm{ 44057416Smarkm#ifndef NOT43 44157416Smarkm if (net > 0 && 44257416Smarkm (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) { 44357416Smarkm perror("setsockopt (SO_DEBUG)"); 44457416Smarkm } 44557416Smarkm#else /* NOT43 */ 44657416Smarkm if (debug) { 44757416Smarkm if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0) 44857416Smarkm perror("setsockopt (SO_DEBUG)"); 44957416Smarkm } else 45057416Smarkm printf("Cannot turn off socket debugging\r\n"); 45157416Smarkm#endif /* NOT43 */ 45257416Smarkm return 1; 45357416Smarkm} 45457416Smarkm 45557416Smarkm#if defined(KRB4) && defined(HAVE_KRB_DISABLE_DEBUG) 45657416Smarkm#include <krb.h> 45757416Smarkm 45857416Smarkmstatic int 45957416Smarkmtogkrbdebug(void) 46057416Smarkm{ 46157416Smarkm if(krb_debug) 46257416Smarkm krb_enable_debug(); 46357416Smarkm else 46457416Smarkm krb_disable_debug(); 46557416Smarkm return 1; 46657416Smarkm} 46757416Smarkm#endif 46857416Smarkm 46957416Smarkmstatic int 47057416Smarkmtogcrlf() 47157416Smarkm{ 47257416Smarkm if (crlf) { 47357416Smarkm printf("Will send carriage returns as telnet <CR><LF>.\r\n"); 47457416Smarkm } else { 47557416Smarkm printf("Will send carriage returns as telnet <CR><NUL>.\r\n"); 47657416Smarkm } 47757416Smarkm return 1; 47857416Smarkm} 47957416Smarkm 48057416Smarkmint binmode; 48157416Smarkm 48257416Smarkmstatic int 48357416Smarkmtogbinary(int val) 48457416Smarkm{ 48557416Smarkm donebinarytoggle = 1; 48657416Smarkm 48757416Smarkm if (val >= 0) { 48857416Smarkm binmode = val; 48957416Smarkm } else { 49057416Smarkm if (my_want_state_is_will(TELOPT_BINARY) && 49157416Smarkm my_want_state_is_do(TELOPT_BINARY)) { 49257416Smarkm binmode = 1; 49357416Smarkm } else if (my_want_state_is_wont(TELOPT_BINARY) && 49457416Smarkm my_want_state_is_dont(TELOPT_BINARY)) { 49557416Smarkm binmode = 0; 49657416Smarkm } 49757416Smarkm val = binmode ? 0 : 1; 49857416Smarkm } 49957416Smarkm 50057416Smarkm if (val == 1) { 50157416Smarkm if (my_want_state_is_will(TELOPT_BINARY) && 50257416Smarkm my_want_state_is_do(TELOPT_BINARY)) { 50357416Smarkm printf("Already operating in binary mode with remote host.\r\n"); 50457416Smarkm } else { 50557416Smarkm printf("Negotiating binary mode with remote host.\r\n"); 50657416Smarkm tel_enter_binary(3); 50757416Smarkm } 50857416Smarkm } else { 50957416Smarkm if (my_want_state_is_wont(TELOPT_BINARY) && 51057416Smarkm my_want_state_is_dont(TELOPT_BINARY)) { 51157416Smarkm printf("Already in network ascii mode with remote host.\r\n"); 51257416Smarkm } else { 51357416Smarkm printf("Negotiating network ascii mode with remote host.\r\n"); 51457416Smarkm tel_leave_binary(3); 51557416Smarkm } 51657416Smarkm } 51757416Smarkm return 1; 51857416Smarkm} 51957416Smarkm 52057416Smarkmstatic int 52157416Smarkmtogrbinary(int val) 52257416Smarkm{ 52357416Smarkm donebinarytoggle = 1; 52457416Smarkm 52557416Smarkm if (val == -1) 52657416Smarkm val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1; 52757416Smarkm 52857416Smarkm if (val == 1) { 52957416Smarkm if (my_want_state_is_do(TELOPT_BINARY)) { 53057416Smarkm printf("Already receiving in binary mode.\r\n"); 53157416Smarkm } else { 53257416Smarkm printf("Negotiating binary mode on input.\r\n"); 53357416Smarkm tel_enter_binary(1); 53457416Smarkm } 53557416Smarkm } else { 53657416Smarkm if (my_want_state_is_dont(TELOPT_BINARY)) { 53757416Smarkm printf("Already receiving in network ascii mode.\r\n"); 53857416Smarkm } else { 53957416Smarkm printf("Negotiating network ascii mode on input.\r\n"); 54057416Smarkm tel_leave_binary(1); 54157416Smarkm } 54257416Smarkm } 54357416Smarkm return 1; 54457416Smarkm} 54557416Smarkm 54657416Smarkmstatic int 54757416Smarkmtogxbinary(int val) 54857416Smarkm{ 54957416Smarkm donebinarytoggle = 1; 55057416Smarkm 55157416Smarkm if (val == -1) 55257416Smarkm val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1; 55357416Smarkm 55457416Smarkm if (val == 1) { 55557416Smarkm if (my_want_state_is_will(TELOPT_BINARY)) { 55657416Smarkm printf("Already transmitting in binary mode.\r\n"); 55757416Smarkm } else { 55857416Smarkm printf("Negotiating binary mode on output.\r\n"); 55957416Smarkm tel_enter_binary(2); 56057416Smarkm } 56157416Smarkm } else { 56257416Smarkm if (my_want_state_is_wont(TELOPT_BINARY)) { 56357416Smarkm printf("Already transmitting in network ascii mode.\r\n"); 56457416Smarkm } else { 56557416Smarkm printf("Negotiating network ascii mode on output.\r\n"); 56657416Smarkm tel_leave_binary(2); 56757416Smarkm } 56857416Smarkm } 56957416Smarkm return 1; 57057416Smarkm} 57157416Smarkm 57257416Smarkm 57357416Smarkmstatic int togglehelp (void); 57457416Smarkm#if defined(AUTHENTICATION) 57557416Smarkmextern int auth_togdebug (int); 57657416Smarkm#endif 57757416Smarkm#if defined(ENCRYPTION) 57857416Smarkmextern int EncryptAutoEnc (int); 57957416Smarkmextern int EncryptAutoDec (int); 58057416Smarkmextern int EncryptDebug (int); 58157416Smarkmextern int EncryptVerbose (int); 58257416Smarkm#endif 58357416Smarkm 58457416Smarkmstruct togglelist { 58557416Smarkm char *name; /* name of toggle */ 58657416Smarkm char *help; /* help message */ 58757416Smarkm int (*handler)(); /* routine to do actual setting */ 58857416Smarkm int *variable; 58957416Smarkm char *actionexplanation; 59057416Smarkm}; 59157416Smarkm 59257416Smarkmstatic struct togglelist Togglelist[] = { 59357416Smarkm { "autoflush", 59457416Smarkm "flushing of output when sending interrupt characters", 59557416Smarkm 0, 59657416Smarkm &autoflush, 59757416Smarkm "flush output when sending interrupt characters" }, 59857416Smarkm { "autosynch", 59957416Smarkm "automatic sending of interrupt characters in urgent mode", 60057416Smarkm 0, 60157416Smarkm &autosynch, 60257416Smarkm "send interrupt characters in urgent mode" }, 60357416Smarkm#if defined(AUTHENTICATION) 60457416Smarkm { "autologin", 60557416Smarkm "automatic sending of login and/or authentication info", 60657416Smarkm 0, 60757416Smarkm &autologin, 60857416Smarkm "send login name and/or authentication information" }, 60957416Smarkm { "authdebug", 61057416Smarkm "Toggle authentication debugging", 61157416Smarkm auth_togdebug, 61257416Smarkm 0, 61357416Smarkm "print authentication debugging information" }, 61457416Smarkm#endif 61557416Smarkm#if defined(ENCRYPTION) 61657416Smarkm { "autoencrypt", 61757416Smarkm "automatic encryption of data stream", 61857416Smarkm EncryptAutoEnc, 61957416Smarkm 0, 62057416Smarkm "automatically encrypt output" }, 62157416Smarkm { "autodecrypt", 62257416Smarkm "automatic decryption of data stream", 62357416Smarkm EncryptAutoDec, 62457416Smarkm 0, 62557416Smarkm "automatically decrypt input" }, 62657416Smarkm { "verbose_encrypt", 62757416Smarkm "Toggle verbose encryption output", 62857416Smarkm EncryptVerbose, 62957416Smarkm 0, 63057416Smarkm "print verbose encryption output" }, 63157416Smarkm { "encdebug", 63257416Smarkm "Toggle encryption debugging", 63357416Smarkm EncryptDebug, 63457416Smarkm 0, 63557416Smarkm "print encryption debugging information" }, 63657416Smarkm#endif 63757416Smarkm { "skiprc", 63857416Smarkm "don't read ~/.telnetrc file", 63957416Smarkm 0, 64057416Smarkm &skiprc, 64157416Smarkm "skip reading of ~/.telnetrc file" }, 64257416Smarkm { "binary", 64357416Smarkm "sending and receiving of binary data", 64457416Smarkm togbinary, 64557416Smarkm 0, 64657416Smarkm 0 }, 64757416Smarkm { "inbinary", 64857416Smarkm "receiving of binary data", 64957416Smarkm togrbinary, 65057416Smarkm 0, 65157416Smarkm 0 }, 65257416Smarkm { "outbinary", 65357416Smarkm "sending of binary data", 65457416Smarkm togxbinary, 65557416Smarkm 0, 65657416Smarkm 0 }, 65757416Smarkm { "crlf", 65857416Smarkm "sending carriage returns as telnet <CR><LF>", 65957416Smarkm togcrlf, 66057416Smarkm &crlf, 66157416Smarkm 0 }, 66257416Smarkm { "crmod", 66357416Smarkm "mapping of received carriage returns", 66457416Smarkm 0, 66557416Smarkm &crmod, 66657416Smarkm "map carriage return on output" }, 66757416Smarkm { "localchars", 66857416Smarkm "local recognition of certain control characters", 66957416Smarkm lclchars, 67057416Smarkm &localchars, 67157416Smarkm "recognize certain control characters" }, 67257416Smarkm { " ", "", 0 }, /* empty line */ 67357416Smarkm { "debug", 67457416Smarkm "debugging", 67557416Smarkm togdebug, 67657416Smarkm &debug, 67757416Smarkm "turn on socket level debugging" }, 67857416Smarkm#if defined(KRB4) && defined(HAVE_KRB_DISABLE_DEBUG) 67957416Smarkm { "krb_debug", 68057416Smarkm "kerberos 4 debugging", 68157416Smarkm togkrbdebug, 68257416Smarkm &krb_debug, 68357416Smarkm "turn on kerberos 4 debugging" }, 68457416Smarkm#endif 68557416Smarkm { "netdata", 68657416Smarkm "printing of hexadecimal network data (debugging)", 68757416Smarkm 0, 68857416Smarkm &netdata, 68957416Smarkm "print hexadecimal representation of network traffic" }, 69057416Smarkm { "prettydump", 69157416Smarkm "output of \"netdata\" to user readable format (debugging)", 69257416Smarkm 0, 69357416Smarkm &prettydump, 69457416Smarkm "print user readable output for \"netdata\"" }, 69557416Smarkm { "options", 69657416Smarkm "viewing of options processing (debugging)", 69757416Smarkm 0, 69857416Smarkm &showoptions, 69957416Smarkm "show option processing" }, 70057416Smarkm { "termdata", 70157416Smarkm "(debugging) toggle printing of hexadecimal terminal data", 70257416Smarkm 0, 70357416Smarkm &termdata, 70457416Smarkm "print hexadecimal representation of terminal traffic" }, 70557416Smarkm { "?", 70657416Smarkm 0, 70757416Smarkm togglehelp }, 70857416Smarkm { "help", 70957416Smarkm 0, 71057416Smarkm togglehelp }, 71157416Smarkm { 0 } 71257416Smarkm}; 71357416Smarkm 71457416Smarkmstatic int 71557416Smarkmtogglehelp() 71657416Smarkm{ 71757416Smarkm struct togglelist *c; 71857416Smarkm 71957416Smarkm for (c = Togglelist; c->name; c++) { 72057416Smarkm if (c->help) { 72157416Smarkm if (*c->help) 72257416Smarkm printf("%-15s toggle %s\r\n", c->name, c->help); 72357416Smarkm else 72457416Smarkm printf("\r\n"); 72557416Smarkm } 72657416Smarkm } 72757416Smarkm printf("\r\n"); 72857416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 72957416Smarkm return 0; 73057416Smarkm} 73157416Smarkm 73257416Smarkmstatic void 73357416Smarkmsettogglehelp(int set) 73457416Smarkm{ 73557416Smarkm struct togglelist *c; 73657416Smarkm 73757416Smarkm for (c = Togglelist; c->name; c++) { 73857416Smarkm if (c->help) { 73957416Smarkm if (*c->help) 74057416Smarkm printf("%-15s %s %s\r\n", c->name, set ? "enable" : "disable", 74157416Smarkm c->help); 74257416Smarkm else 74357416Smarkm printf("\r\n"); 74457416Smarkm } 74557416Smarkm } 74657416Smarkm} 74757416Smarkm 74857416Smarkm#define GETTOGGLE(name) (struct togglelist *) \ 74957416Smarkm genget(name, (char **) Togglelist, sizeof(struct togglelist)) 75057416Smarkm 75157416Smarkmstatic int 75257416Smarkmtoggle(int argc, char *argv[]) 75357416Smarkm{ 75457416Smarkm int retval = 1; 75557416Smarkm char *name; 75657416Smarkm struct togglelist *c; 75757416Smarkm 75857416Smarkm if (argc < 2) { 75957416Smarkm fprintf(stderr, 76057416Smarkm "Need an argument to 'toggle' command. 'toggle ?' for help.\r\n"); 76157416Smarkm return 0; 76257416Smarkm } 76357416Smarkm argc--; 76457416Smarkm argv++; 76557416Smarkm while (argc--) { 76657416Smarkm name = *argv++; 76757416Smarkm c = GETTOGGLE(name); 76857416Smarkm if (Ambiguous(c)) { 76957416Smarkm fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\r\n", 77057416Smarkm name); 77157416Smarkm return 0; 77257416Smarkm } else if (c == 0) { 77357416Smarkm fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\r\n", 77457416Smarkm name); 77557416Smarkm return 0; 77657416Smarkm } else { 77757416Smarkm if (c->variable) { 77857416Smarkm *c->variable = !*c->variable; /* invert it */ 77957416Smarkm if (c->actionexplanation) { 78057416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 78157416Smarkm c->actionexplanation); 78257416Smarkm } 78357416Smarkm } 78457416Smarkm if (c->handler) { 78557416Smarkm retval &= (*c->handler)(-1); 78657416Smarkm } 78757416Smarkm } 78857416Smarkm } 78957416Smarkm return retval; 79057416Smarkm} 79157416Smarkm 79257416Smarkm/* 79357416Smarkm * The following perform the "set" command. 79457416Smarkm */ 79557416Smarkm 79657416Smarkmstruct termios new_tc = { 0 }; 79757416Smarkm 79857416Smarkmstruct setlist { 79957416Smarkm char *name; /* name */ 80057416Smarkm char *help; /* help information */ 80157416Smarkm void (*handler)(); 80257416Smarkm cc_t *charp; /* where it is located at */ 80357416Smarkm}; 80457416Smarkm 80557416Smarkmstatic struct setlist Setlist[] = { 80657416Smarkm#ifdef KLUDGELINEMODE 80757416Smarkm { "echo", "character to toggle local echoing on/off", 0, &echoc }, 80857416Smarkm#endif 80957416Smarkm { "escape", "character to escape back to telnet command mode", 0, &escape }, 81057416Smarkm { "rlogin", "rlogin escape character", 0, &rlogin }, 81157416Smarkm { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 81257416Smarkm { " ", "" }, 81357416Smarkm { " ", "The following need 'localchars' to be toggled true", 0, 0 }, 81457416Smarkm { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar }, 81557416Smarkm { "interrupt", "character to cause an Interrupt Process", 0, &termIntChar }, 81657416Smarkm { "quit", "character to cause an Abort process", 0, &termQuitChar }, 81757416Smarkm { "eof", "character to cause an EOF ", 0, &termEofChar }, 81857416Smarkm { " ", "" }, 81957416Smarkm { " ", "The following are for local editing in linemode", 0, 0 }, 82057416Smarkm { "erase", "character to use to erase a character", 0, &termEraseChar }, 82157416Smarkm { "kill", "character to use to erase a line", 0, &termKillChar }, 82257416Smarkm { "lnext", "character to use for literal next", 0, &termLiteralNextChar }, 82357416Smarkm { "susp", "character to cause a Suspend Process", 0, &termSuspChar }, 82457416Smarkm { "reprint", "character to use for line reprint", 0, &termRprntChar }, 82557416Smarkm { "worderase", "character to use to erase a word", 0, &termWerasChar }, 82657416Smarkm { "start", "character to use for XON", 0, &termStartChar }, 82757416Smarkm { "stop", "character to use for XOFF", 0, &termStopChar }, 82857416Smarkm { "forw1", "alternate end of line character", 0, &termForw1Char }, 82957416Smarkm { "forw2", "alternate end of line character", 0, &termForw2Char }, 83057416Smarkm { "ayt", "alternate AYT character", 0, &termAytChar }, 83157416Smarkm { 0 } 83257416Smarkm}; 83357416Smarkm 83457416Smarkmstatic struct setlist * 83557416Smarkmgetset(char *name) 83657416Smarkm{ 83757416Smarkm return (struct setlist *) 83857416Smarkm genget(name, (char **) Setlist, sizeof(struct setlist)); 83957416Smarkm} 84057416Smarkm 84157416Smarkmvoid 84257416Smarkmset_escape_char(char *s) 84357416Smarkm{ 84457416Smarkm if (rlogin != _POSIX_VDISABLE) { 84557416Smarkm rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 84657416Smarkm printf("Telnet rlogin escape character is '%s'.\r\n", 84757416Smarkm control(rlogin)); 84857416Smarkm } else { 84957416Smarkm escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 85057416Smarkm printf("Telnet escape character is '%s'.\r\n", control(escape)); 85157416Smarkm } 85257416Smarkm} 85357416Smarkm 85457416Smarkmstatic int 85557416Smarkmsetcmd(int argc, char *argv[]) 85657416Smarkm{ 85757416Smarkm int value; 85857416Smarkm struct setlist *ct; 85957416Smarkm struct togglelist *c; 86057416Smarkm 86157416Smarkm if (argc < 2 || argc > 3) { 86257416Smarkm printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n"); 86357416Smarkm return 0; 86457416Smarkm } 86557416Smarkm if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) { 86657416Smarkm for (ct = Setlist; ct->name; ct++) 86757416Smarkm printf("%-15s %s\r\n", ct->name, ct->help); 86857416Smarkm printf("\r\n"); 86957416Smarkm settogglehelp(1); 87057416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 87157416Smarkm return 0; 87257416Smarkm } 87357416Smarkm 87457416Smarkm ct = getset(argv[1]); 87557416Smarkm if (ct == 0) { 87657416Smarkm c = GETTOGGLE(argv[1]); 87757416Smarkm if (c == 0) { 87857416Smarkm fprintf(stderr, "'%s': unknown argument ('set ?' for help).\r\n", 87957416Smarkm argv[1]); 88057416Smarkm return 0; 88157416Smarkm } else if (Ambiguous(c)) { 88257416Smarkm fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n", 88357416Smarkm argv[1]); 88457416Smarkm return 0; 88557416Smarkm } 88657416Smarkm if (c->variable) { 88757416Smarkm if ((argc == 2) || (strcmp("on", argv[2]) == 0)) 88857416Smarkm *c->variable = 1; 88957416Smarkm else if (strcmp("off", argv[2]) == 0) 89057416Smarkm *c->variable = 0; 89157416Smarkm else { 89257416Smarkm printf("Format is 'set togglename [on|off]'\r\n'set ?' for help.\r\n"); 89357416Smarkm return 0; 89457416Smarkm } 89557416Smarkm if (c->actionexplanation) { 89657416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 89757416Smarkm c->actionexplanation); 89857416Smarkm } 89957416Smarkm } 90057416Smarkm if (c->handler) 90157416Smarkm (*c->handler)(1); 90257416Smarkm } else if (argc != 3) { 90357416Smarkm printf("Format is 'set Name Value'\r\n'set ?' for help.\r\n"); 90457416Smarkm return 0; 90557416Smarkm } else if (Ambiguous(ct)) { 90657416Smarkm fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\r\n", 90757416Smarkm argv[1]); 90857416Smarkm return 0; 90957416Smarkm } else if (ct->handler) { 91057416Smarkm (*ct->handler)(argv[2]); 91157416Smarkm printf("%s set to \"%s\".\r\n", ct->name, (char *)ct->charp); 91257416Smarkm } else { 91357416Smarkm if (strcmp("off", argv[2])) { 91457416Smarkm value = special(argv[2]); 91557416Smarkm } else { 91657416Smarkm value = _POSIX_VDISABLE; 91757416Smarkm } 91857416Smarkm *(ct->charp) = (cc_t)value; 91957416Smarkm printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp))); 92057416Smarkm } 92157416Smarkm slc_check(); 92257416Smarkm return 1; 92357416Smarkm} 92457416Smarkm 92557416Smarkmstatic int 92657416Smarkmunsetcmd(int argc, char *argv[]) 92757416Smarkm{ 92857416Smarkm struct setlist *ct; 92957416Smarkm struct togglelist *c; 93057416Smarkm char *name; 93157416Smarkm 93257416Smarkm if (argc < 2) { 93357416Smarkm fprintf(stderr, 93457416Smarkm "Need an argument to 'unset' command. 'unset ?' for help.\r\n"); 93557416Smarkm return 0; 93657416Smarkm } 93757416Smarkm if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 93857416Smarkm for (ct = Setlist; ct->name; ct++) 93957416Smarkm printf("%-15s %s\r\n", ct->name, ct->help); 94057416Smarkm printf("\r\n"); 94157416Smarkm settogglehelp(0); 94257416Smarkm printf("%-15s %s\r\n", "?", "display help information"); 94357416Smarkm return 0; 94457416Smarkm } 94557416Smarkm 94657416Smarkm argc--; 94757416Smarkm argv++; 94857416Smarkm while (argc--) { 94957416Smarkm name = *argv++; 95057416Smarkm ct = getset(name); 95157416Smarkm if (ct == 0) { 95257416Smarkm c = GETTOGGLE(name); 95357416Smarkm if (c == 0) { 95457416Smarkm fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\r\n", 95557416Smarkm name); 95657416Smarkm return 0; 95757416Smarkm } else if (Ambiguous(c)) { 95857416Smarkm fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n", 95957416Smarkm name); 96057416Smarkm return 0; 96157416Smarkm } 96257416Smarkm if (c->variable) { 96357416Smarkm *c->variable = 0; 96457416Smarkm if (c->actionexplanation) { 96557416Smarkm printf("%s %s.\r\n", *c->variable? "Will" : "Won't", 96657416Smarkm c->actionexplanation); 96757416Smarkm } 96857416Smarkm } 96957416Smarkm if (c->handler) 97057416Smarkm (*c->handler)(0); 97157416Smarkm } else if (Ambiguous(ct)) { 97257416Smarkm fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\r\n", 97357416Smarkm name); 97457416Smarkm return 0; 97557416Smarkm } else if (ct->handler) { 97657416Smarkm (*ct->handler)(0); 97757416Smarkm printf("%s reset to \"%s\".\r\n", ct->name, (char *)ct->charp); 97857416Smarkm } else { 97957416Smarkm *(ct->charp) = _POSIX_VDISABLE; 98057416Smarkm printf("%s character is '%s'.\r\n", ct->name, control(*(ct->charp))); 98157416Smarkm } 98257416Smarkm } 98357416Smarkm return 1; 98457416Smarkm} 98557416Smarkm 98657416Smarkm/* 98757416Smarkm * The following are the data structures and routines for the 98857416Smarkm * 'mode' command. 98957416Smarkm */ 99057416Smarkm#ifdef KLUDGELINEMODE 99157416Smarkm 99257416Smarkmstatic int 99357416Smarkmdokludgemode(void) 99457416Smarkm{ 99557416Smarkm kludgelinemode = 1; 99657416Smarkm send_wont(TELOPT_LINEMODE, 1); 99757416Smarkm send_dont(TELOPT_SGA, 1); 99857416Smarkm send_dont(TELOPT_ECHO, 1); 99957416Smarkm return 1; 100057416Smarkm} 100157416Smarkm#endif 100257416Smarkm 100357416Smarkmstatic int 100457416Smarkmdolinemode() 100557416Smarkm{ 100657416Smarkm#ifdef KLUDGELINEMODE 100757416Smarkm if (kludgelinemode) 100857416Smarkm send_dont(TELOPT_SGA, 1); 100957416Smarkm#endif 101057416Smarkm send_will(TELOPT_LINEMODE, 1); 101157416Smarkm send_dont(TELOPT_ECHO, 1); 101257416Smarkm return 1; 101357416Smarkm} 101457416Smarkm 101557416Smarkmstatic int 101657416Smarkmdocharmode() 101757416Smarkm{ 101857416Smarkm#ifdef KLUDGELINEMODE 101957416Smarkm if (kludgelinemode) 102057416Smarkm send_do(TELOPT_SGA, 1); 102157416Smarkm else 102257416Smarkm#endif 102357416Smarkm send_wont(TELOPT_LINEMODE, 1); 102457416Smarkm send_do(TELOPT_ECHO, 1); 102557416Smarkm return 1; 102657416Smarkm} 102757416Smarkm 102857416Smarkmstatic int 102957416Smarkmdolmmode(int bit, int on) 103057416Smarkm{ 103157416Smarkm unsigned char c; 103257416Smarkm 103357416Smarkm if (my_want_state_is_wont(TELOPT_LINEMODE)) { 103457416Smarkm printf("?Need to have LINEMODE option enabled first.\r\n"); 103557416Smarkm printf("'mode ?' for help.\r\n"); 103657416Smarkm return 0; 103757416Smarkm } 103857416Smarkm 103957416Smarkm if (on) 104057416Smarkm c = (linemode | bit); 104157416Smarkm else 104257416Smarkm c = (linemode & ~bit); 104357416Smarkm lm_mode(&c, 1, 1); 104457416Smarkm return 1; 104557416Smarkm} 104657416Smarkm 104757416Smarkmstatic int 104857416Smarkmtn_setmode(int bit) 104957416Smarkm{ 105057416Smarkm return dolmmode(bit, 1); 105157416Smarkm} 105257416Smarkm 105357416Smarkmstatic int 105457416Smarkmtn_clearmode(int bit) 105557416Smarkm{ 105657416Smarkm return dolmmode(bit, 0); 105757416Smarkm} 105857416Smarkm 105957416Smarkmstruct modelist { 106057416Smarkm char *name; /* command name */ 106157416Smarkm char *help; /* help string */ 106257416Smarkm int (*handler)(); /* routine which executes command */ 106357416Smarkm int needconnect; /* Do we need to be connected to execute? */ 106457416Smarkm int arg1; 106557416Smarkm}; 106657416Smarkm 106757416Smarkmstatic int modehelp(void); 106857416Smarkm 106957416Smarkmstatic struct modelist ModeList[] = { 107057416Smarkm { "character", "Disable LINEMODE option", docharmode, 1 }, 107157416Smarkm#ifdef KLUDGELINEMODE 107257416Smarkm { "", "(or disable obsolete line-by-line mode)", 0 }, 107357416Smarkm#endif 107457416Smarkm { "line", "Enable LINEMODE option", dolinemode, 1 }, 107557416Smarkm#ifdef KLUDGELINEMODE 107657416Smarkm { "", "(or enable obsolete line-by-line mode)", 0 }, 107757416Smarkm#endif 107857416Smarkm { "", "", 0 }, 107957416Smarkm { "", "These require the LINEMODE option to be enabled", 0 }, 108057416Smarkm { "isig", "Enable signal trapping", tn_setmode, 1, MODE_TRAPSIG }, 108157416Smarkm { "+isig", 0, tn_setmode, 1, MODE_TRAPSIG }, 108257416Smarkm { "-isig", "Disable signal trapping", tn_clearmode, 1, MODE_TRAPSIG }, 108357416Smarkm { "edit", "Enable character editing", tn_setmode, 1, MODE_EDIT }, 108457416Smarkm { "+edit", 0, tn_setmode, 1, MODE_EDIT }, 108557416Smarkm { "-edit", "Disable character editing", tn_clearmode, 1, MODE_EDIT }, 108657416Smarkm { "softtabs", "Enable tab expansion", tn_setmode, 1, MODE_SOFT_TAB }, 108757416Smarkm { "+softtabs", 0, tn_setmode, 1, MODE_SOFT_TAB }, 108857416Smarkm { "-softtabs", "Disable character editing", tn_clearmode, 1, MODE_SOFT_TAB }, 108957416Smarkm { "litecho", "Enable literal character echo", tn_setmode, 1, MODE_LIT_ECHO }, 109057416Smarkm { "+litecho", 0, tn_setmode, 1, MODE_LIT_ECHO }, 109157416Smarkm { "-litecho", "Disable literal character echo", tn_clearmode, 1, MODE_LIT_ECHO }, 109257416Smarkm { "help", 0, modehelp, 0 }, 109357416Smarkm#ifdef KLUDGELINEMODE 109457416Smarkm { "kludgeline", 0, dokludgemode, 1 }, 109557416Smarkm#endif 109657416Smarkm { "", "", 0 }, 109757416Smarkm { "?", "Print help information", modehelp, 0 }, 109857416Smarkm { 0 }, 109957416Smarkm}; 110057416Smarkm 110157416Smarkm 110257416Smarkmstatic int 110357416Smarkmmodehelp(void) 110457416Smarkm{ 110557416Smarkm struct modelist *mt; 110657416Smarkm 110757416Smarkm printf("format is: 'mode Mode', where 'Mode' is one of:\r\n\r\n"); 110857416Smarkm for (mt = ModeList; mt->name; mt++) { 110957416Smarkm if (mt->help) { 111057416Smarkm if (*mt->help) 111157416Smarkm printf("%-15s %s\r\n", mt->name, mt->help); 111257416Smarkm else 111357416Smarkm printf("\r\n"); 111457416Smarkm } 111557416Smarkm } 111657416Smarkm return 0; 111757416Smarkm} 111857416Smarkm 111957416Smarkm#define GETMODECMD(name) (struct modelist *) \ 112057416Smarkm genget(name, (char **) ModeList, sizeof(struct modelist)) 112157416Smarkm 112257416Smarkmstatic int 112357416Smarkmmodecmd(int argc, char **argv) 112457416Smarkm{ 112557416Smarkm struct modelist *mt; 112657416Smarkm 112757416Smarkm if (argc != 2) { 112857416Smarkm printf("'mode' command requires an argument\r\n"); 112957416Smarkm printf("'mode ?' for help.\r\n"); 113057416Smarkm } else if ((mt = GETMODECMD(argv[1])) == 0) { 113157416Smarkm fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\r\n", argv[1]); 113257416Smarkm } else if (Ambiguous(mt)) { 113357416Smarkm fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\r\n", argv[1]); 113457416Smarkm } else if (mt->needconnect && !connected) { 113557416Smarkm printf("?Need to be connected first.\r\n"); 113657416Smarkm printf("'mode ?' for help.\r\n"); 113757416Smarkm } else if (mt->handler) { 113857416Smarkm return (*mt->handler)(mt->arg1); 113957416Smarkm } 114057416Smarkm return 0; 114157416Smarkm} 114257416Smarkm 114357416Smarkm/* 114457416Smarkm * The following data structures and routines implement the 114557416Smarkm * "display" command. 114657416Smarkm */ 114757416Smarkm 114857416Smarkmstatic int 114957416Smarkmdisplay(int argc, char *argv[]) 115057416Smarkm{ 115157416Smarkm struct togglelist *tl; 115257416Smarkm struct setlist *sl; 115357416Smarkm 115457416Smarkm#define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 115557416Smarkm if (*tl->variable) { \ 115657416Smarkm printf("will"); \ 115757416Smarkm } else { \ 115857416Smarkm printf("won't"); \ 115957416Smarkm } \ 116057416Smarkm printf(" %s.\r\n", tl->actionexplanation); \ 116157416Smarkm } 116257416Smarkm 116357416Smarkm#define doset(sl) if (sl->name && *sl->name != ' ') { \ 116457416Smarkm if (sl->handler == 0) \ 116557416Smarkm printf("%-15s [%s]\r\n", sl->name, control(*sl->charp)); \ 116657416Smarkm else \ 116757416Smarkm printf("%-15s \"%s\"\r\n", sl->name, (char *)sl->charp); \ 116857416Smarkm } 116957416Smarkm 117057416Smarkm if (argc == 1) { 117157416Smarkm for (tl = Togglelist; tl->name; tl++) { 117257416Smarkm dotog(tl); 117357416Smarkm } 117457416Smarkm printf("\r\n"); 117557416Smarkm for (sl = Setlist; sl->name; sl++) { 117657416Smarkm doset(sl); 117757416Smarkm } 117857416Smarkm } else { 117957416Smarkm int i; 118057416Smarkm 118157416Smarkm for (i = 1; i < argc; i++) { 118257416Smarkm sl = getset(argv[i]); 118357416Smarkm tl = GETTOGGLE(argv[i]); 118457416Smarkm if (Ambiguous(sl) || Ambiguous(tl)) { 118557416Smarkm printf("?Ambiguous argument '%s'.\r\n", argv[i]); 118657416Smarkm return 0; 118757416Smarkm } else if (!sl && !tl) { 118857416Smarkm printf("?Unknown argument '%s'.\r\n", argv[i]); 118957416Smarkm return 0; 119057416Smarkm } else { 119157416Smarkm if (tl) { 119257416Smarkm dotog(tl); 119357416Smarkm } 119457416Smarkm if (sl) { 119557416Smarkm doset(sl); 119657416Smarkm } 119757416Smarkm } 119857416Smarkm } 119957416Smarkm } 120057416Smarkm/*@*/optionstatus(); 120157416Smarkm#if defined(ENCRYPTION) 120257416Smarkm EncryptStatus(); 120357416Smarkm#endif 120457416Smarkm return 1; 120557416Smarkm#undef doset 120657416Smarkm#undef dotog 120757416Smarkm} 120857416Smarkm 120957416Smarkm/* 121057416Smarkm * The following are the data structures, and many of the routines, 121157416Smarkm * relating to command processing. 121257416Smarkm */ 121357416Smarkm 121457416Smarkm/* 121557416Smarkm * Set the escape character. 121657416Smarkm */ 121757416Smarkmstatic int 121857416Smarkmsetescape(int argc, char *argv[]) 121957416Smarkm{ 122057416Smarkm char *arg; 122157416Smarkm char buf[50]; 122257416Smarkm 122357416Smarkm printf( 122457416Smarkm "Deprecated usage - please use 'set escape%s%s' in the future.\r\n", 122557416Smarkm (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 122657416Smarkm if (argc > 2) 122757416Smarkm arg = argv[1]; 122857416Smarkm else { 122957416Smarkm printf("new escape character: "); 123057416Smarkm fgets(buf, sizeof(buf), stdin); 123157416Smarkm arg = buf; 123257416Smarkm } 123357416Smarkm if (arg[0] != '\0') 123457416Smarkm escape = arg[0]; 123557416Smarkm printf("Escape character is '%s'.\r\n", control(escape)); 123657416Smarkm 123757416Smarkm fflush(stdout); 123857416Smarkm return 1; 123957416Smarkm} 124057416Smarkm 124157416Smarkmstatic int 124257416Smarkmtogcrmod() 124357416Smarkm{ 124457416Smarkm crmod = !crmod; 124557416Smarkm printf("Deprecated usage - please use 'toggle crmod' in the future.\r\n"); 124657416Smarkm printf("%s map carriage return on output.\r\n", crmod ? "Will" : "Won't"); 124757416Smarkm fflush(stdout); 124857416Smarkm return 1; 124957416Smarkm} 125057416Smarkm 125157416Smarkmstatic int 125257416Smarkmtelnetsuspend() 125357416Smarkm{ 125457416Smarkm#ifdef SIGTSTP 125557416Smarkm setcommandmode(); 125657416Smarkm { 125757416Smarkm long oldrows, oldcols, newrows, newcols, err; 125857416Smarkm 125957416Smarkm err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 126057416Smarkm kill(0, SIGTSTP); 126157416Smarkm /* 126257416Smarkm * If we didn't get the window size before the SUSPEND, but we 126357416Smarkm * can get them now (?), then send the NAWS to make sure that 126457416Smarkm * we are set up for the right window size. 126557416Smarkm */ 126657416Smarkm if (TerminalWindowSize(&newrows, &newcols) && connected && 126757416Smarkm (err || ((oldrows != newrows) || (oldcols != newcols)))) { 126857416Smarkm sendnaws(); 126957416Smarkm } 127057416Smarkm } 127157416Smarkm /* reget parameters in case they were changed */ 127257416Smarkm TerminalSaveState(); 127357416Smarkm setconnmode(0); 127457416Smarkm#else 127557416Smarkm printf("Suspend is not supported. Try the '!' command instead\r\n"); 127657416Smarkm#endif 127757416Smarkm return 1; 127857416Smarkm} 127957416Smarkm 128057416Smarkmstatic int 128157416Smarkmshell(int argc, char **argv) 128257416Smarkm{ 128357416Smarkm long oldrows, oldcols, newrows, newcols, err; 128457416Smarkm 128557416Smarkm setcommandmode(); 128657416Smarkm 128757416Smarkm err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 128857416Smarkm switch(fork()) { 128957416Smarkm case -1: 129057416Smarkm perror("Fork failed\r\n"); 129157416Smarkm break; 129257416Smarkm 129357416Smarkm case 0: 129457416Smarkm { 129557416Smarkm /* 129657416Smarkm * Fire up the shell in the child. 129757416Smarkm */ 129857416Smarkm char *shellp, *shellname; 129957416Smarkm 130057416Smarkm shellp = getenv("SHELL"); 130157416Smarkm if (shellp == NULL) 130257416Smarkm shellp = "/bin/sh"; 130357416Smarkm if ((shellname = strrchr(shellp, '/')) == 0) 130457416Smarkm shellname = shellp; 130557416Smarkm else 130657416Smarkm shellname++; 130757416Smarkm if (argc > 1) 130857416Smarkm execl(shellp, shellname, "-c", &saveline[1], 0); 130957416Smarkm else 131057416Smarkm execl(shellp, shellname, 0); 131157416Smarkm perror("Execl"); 131257416Smarkm _exit(1); 131357416Smarkm } 131457416Smarkm default: 131557416Smarkm wait((int *)0); /* Wait for the shell to complete */ 131657416Smarkm 131757416Smarkm if (TerminalWindowSize(&newrows, &newcols) && connected && 131857416Smarkm (err || ((oldrows != newrows) || (oldcols != newcols)))) { 131957416Smarkm sendnaws(); 132057416Smarkm } 132157416Smarkm break; 132257416Smarkm } 132357416Smarkm return 1; 132457416Smarkm} 132557416Smarkm 132657416Smarkmstatic int 132757416Smarkmbye(int argc, char **argv) 132857416Smarkm{ 132957416Smarkm if (connected) { 133057416Smarkm shutdown(net, 2); 133157416Smarkm printf("Connection closed.\r\n"); 133257416Smarkm NetClose(net); 133357416Smarkm connected = 0; 133457416Smarkm resettermname = 1; 133557416Smarkm#if defined(AUTHENTICATION) || defined(ENCRYPTION) 133657416Smarkm auth_encrypt_connect(connected); 133757416Smarkm#endif 133857416Smarkm /* reset options */ 133957416Smarkm tninit(); 134057416Smarkm } 134157416Smarkm if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) 134257416Smarkm longjmp(toplevel, 1); 134357416Smarkm return 0; /* NOTREACHED */ 134457416Smarkm} 134557416Smarkm 134657416Smarkmint 134757416Smarkmquit(void) 134857416Smarkm{ 134957416Smarkm call(bye, "bye", "fromquit", 0); 135057416Smarkm Exit(0); 135157416Smarkm return 0; /*NOTREACHED*/ 135257416Smarkm} 135357416Smarkm 135457416Smarkmstatic int 135557416Smarkmlogout() 135657416Smarkm{ 135757416Smarkm send_do(TELOPT_LOGOUT, 1); 135857416Smarkm netflush(); 135957416Smarkm return 1; 136057416Smarkm} 136157416Smarkm 136257416Smarkm 136357416Smarkm/* 136457416Smarkm * The SLC command. 136557416Smarkm */ 136657416Smarkm 136757416Smarkmstruct slclist { 136857416Smarkm char *name; 136957416Smarkm char *help; 137057416Smarkm void (*handler)(); 137157416Smarkm int arg; 137257416Smarkm}; 137357416Smarkm 137457416Smarkmstatic void slc_help(void); 137557416Smarkm 137657416Smarkmstruct slclist SlcList[] = { 137757416Smarkm { "export", "Use local special character definitions", 137857416Smarkm slc_mode_export, 0 }, 137957416Smarkm { "import", "Use remote special character definitions", 138057416Smarkm slc_mode_import, 1 }, 138157416Smarkm { "check", "Verify remote special character definitions", 138257416Smarkm slc_mode_import, 0 }, 138357416Smarkm { "help", 0, slc_help, 0 }, 138457416Smarkm { "?", "Print help information", slc_help, 0 }, 138557416Smarkm { 0 }, 138657416Smarkm}; 138757416Smarkm 138857416Smarkmstatic void 138957416Smarkmslc_help(void) 139057416Smarkm{ 139157416Smarkm struct slclist *c; 139257416Smarkm 139357416Smarkm for (c = SlcList; c->name; c++) { 139457416Smarkm if (c->help) { 139557416Smarkm if (*c->help) 139657416Smarkm printf("%-15s %s\r\n", c->name, c->help); 139757416Smarkm else 139857416Smarkm printf("\r\n"); 139957416Smarkm } 140057416Smarkm } 140157416Smarkm} 140257416Smarkm 140357416Smarkmstatic struct slclist * 140457416Smarkmgetslc(char *name) 140557416Smarkm{ 140657416Smarkm return (struct slclist *) 140757416Smarkm genget(name, (char **) SlcList, sizeof(struct slclist)); 140857416Smarkm} 140957416Smarkm 141057416Smarkmstatic int 141157416Smarkmslccmd(int argc, char **argv) 141257416Smarkm{ 141357416Smarkm struct slclist *c; 141457416Smarkm 141557416Smarkm if (argc != 2) { 141657416Smarkm fprintf(stderr, 141757416Smarkm "Need an argument to 'slc' command. 'slc ?' for help.\r\n"); 141857416Smarkm return 0; 141957416Smarkm } 142057416Smarkm c = getslc(argv[1]); 142157416Smarkm if (c == 0) { 142257416Smarkm fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\r\n", 142357416Smarkm argv[1]); 142457416Smarkm return 0; 142557416Smarkm } 142657416Smarkm if (Ambiguous(c)) { 142757416Smarkm fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\r\n", 142857416Smarkm argv[1]); 142957416Smarkm return 0; 143057416Smarkm } 143157416Smarkm (*c->handler)(c->arg); 143257416Smarkm slcstate(); 143357416Smarkm return 1; 143457416Smarkm} 143557416Smarkm 143657416Smarkm/* 143757416Smarkm * The ENVIRON command. 143857416Smarkm */ 143957416Smarkm 144057416Smarkmstruct envlist { 144157416Smarkm char *name; 144257416Smarkm char *help; 144357416Smarkm void (*handler)(); 144457416Smarkm int narg; 144557416Smarkm}; 144657416Smarkm 144757416Smarkmstatic void env_help (void); 144857416Smarkm 144957416Smarkmstruct envlist EnvList[] = { 145057416Smarkm { "define", "Define an environment variable", 145157416Smarkm (void (*)())env_define, 2 }, 145257416Smarkm { "undefine", "Undefine an environment variable", 145357416Smarkm env_undefine, 1 }, 145457416Smarkm { "export", "Mark an environment variable for automatic export", 145557416Smarkm env_export, 1 }, 145657416Smarkm { "unexport", "Don't mark an environment variable for automatic export", 145757416Smarkm env_unexport, 1 }, 145857416Smarkm { "send", "Send an environment variable", env_send, 1 }, 145957416Smarkm { "list", "List the current environment variables", 146057416Smarkm env_list, 0 }, 146157416Smarkm { "help", 0, env_help, 0 }, 146257416Smarkm { "?", "Print help information", env_help, 0 }, 146357416Smarkm { 0 }, 146457416Smarkm}; 146557416Smarkm 146657416Smarkmstatic void 146757416Smarkmenv_help() 146857416Smarkm{ 146957416Smarkm struct envlist *c; 147057416Smarkm 147157416Smarkm for (c = EnvList; c->name; c++) { 147257416Smarkm if (c->help) { 147357416Smarkm if (*c->help) 147457416Smarkm printf("%-15s %s\r\n", c->name, c->help); 147557416Smarkm else 147657416Smarkm printf("\r\n"); 147757416Smarkm } 147857416Smarkm } 147957416Smarkm} 148057416Smarkm 148157416Smarkmstatic struct envlist * 148257416Smarkmgetenvcmd(char *name) 148357416Smarkm{ 148457416Smarkm return (struct envlist *) 148557416Smarkm genget(name, (char **) EnvList, sizeof(struct envlist)); 148657416Smarkm} 148757416Smarkm 148857416Smarkmstatic int 148957416Smarkmenv_cmd(int argc, char **argv) 149057416Smarkm{ 149157416Smarkm struct envlist *c; 149257416Smarkm 149357416Smarkm if (argc < 2) { 149457416Smarkm fprintf(stderr, 149557416Smarkm "Need an argument to 'environ' command. 'environ ?' for help.\r\n"); 149657416Smarkm return 0; 149757416Smarkm } 149857416Smarkm c = getenvcmd(argv[1]); 149957416Smarkm if (c == 0) { 150057416Smarkm fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\r\n", 150157416Smarkm argv[1]); 150257416Smarkm return 0; 150357416Smarkm } 150457416Smarkm if (Ambiguous(c)) { 150557416Smarkm fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\r\n", 150657416Smarkm argv[1]); 150757416Smarkm return 0; 150857416Smarkm } 150957416Smarkm if (c->narg + 2 != argc) { 151057416Smarkm fprintf(stderr, 151157416Smarkm "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\r\n", 151257416Smarkm c->narg < argc + 2 ? "only " : "", 151357416Smarkm c->narg, c->narg == 1 ? "" : "s", c->name); 151457416Smarkm return 0; 151557416Smarkm } 151657416Smarkm (*c->handler)(argv[2], argv[3]); 151757416Smarkm return 1; 151857416Smarkm} 151957416Smarkm 152057416Smarkmstruct env_lst { 152157416Smarkm struct env_lst *next; /* pointer to next structure */ 152257416Smarkm struct env_lst *prev; /* pointer to previous structure */ 152357416Smarkm unsigned char *var; /* pointer to variable name */ 152457416Smarkm unsigned char *value; /* pointer to variable value */ 152557416Smarkm int export; /* 1 -> export with default list of variables */ 152657416Smarkm int welldefined; /* A well defined variable */ 152757416Smarkm}; 152857416Smarkm 152957416Smarkmstruct env_lst envlisthead; 153057416Smarkm 153157416Smarkmstruct env_lst * 153257416Smarkmenv_find(unsigned char *var) 153357416Smarkm{ 153457416Smarkm struct env_lst *ep; 153557416Smarkm 153657416Smarkm for (ep = envlisthead.next; ep; ep = ep->next) { 153757416Smarkm if (strcmp((char *)ep->var, (char *)var) == 0) 153857416Smarkm return(ep); 153957416Smarkm } 154057416Smarkm return(NULL); 154157416Smarkm} 154257416Smarkm 154357416Smarkm#if IRIX == 4 154457416Smarkm#define environ _environ 154557416Smarkm#endif 154657416Smarkm 154757416Smarkmvoid 154857416Smarkmenv_init(void) 154957416Smarkm{ 155057416Smarkm char **epp, *cp; 155157416Smarkm struct env_lst *ep; 155257416Smarkm 155357416Smarkm for (epp = environ; *epp; epp++) { 155457416Smarkm if ((cp = strchr(*epp, '='))) { 155557416Smarkm *cp = '\0'; 155657416Smarkm ep = env_define((unsigned char *)*epp, 155757416Smarkm (unsigned char *)cp+1); 155857416Smarkm ep->export = 0; 155957416Smarkm *cp = '='; 156057416Smarkm } 156157416Smarkm } 156257416Smarkm /* 156357416Smarkm * Special case for DISPLAY variable. If it is ":0.0" or 156457416Smarkm * "unix:0.0", we have to get rid of "unix" and insert our 156557416Smarkm * hostname. 156657416Smarkm */ 156757416Smarkm if ((ep = env_find("DISPLAY")) 156857416Smarkm && (*ep->value == ':' 156957416Smarkm || strncmp((char *)ep->value, "unix:", 5) == 0)) { 157057416Smarkm char hbuf[256+1]; 157157416Smarkm char *cp2 = strchr((char *)ep->value, ':'); 157257416Smarkm 157357416Smarkm /* XXX - should be k_gethostname? */ 157457416Smarkm gethostname(hbuf, 256); 157557416Smarkm hbuf[256] = '\0'; 157657416Smarkm 157757416Smarkm /* If this is not the full name, try to get it via DNS */ 157857416Smarkm if (strchr(hbuf, '.') == 0) { 157957416Smarkm struct addrinfo hints, *ai, *a; 158057416Smarkm int error; 158157416Smarkm 158257416Smarkm memset (&hints, 0, sizeof(hints)); 158357416Smarkm hints.ai_flags = AI_CANONNAME; 158457416Smarkm 158557416Smarkm error = getaddrinfo (hbuf, NULL, &hints, &ai); 158657416Smarkm if (error == 0) { 158757416Smarkm for (a = ai; a != NULL; a = a->ai_next) 158857416Smarkm if (a->ai_canonname != NULL) { 158957416Smarkm strlcpy (hbuf, 159057416Smarkm ai->ai_canonname, 159157416Smarkm 256); 159257416Smarkm break; 159357416Smarkm } 159457416Smarkm freeaddrinfo (ai); 159557416Smarkm } 159657416Smarkm } 159757416Smarkm 159857416Smarkm asprintf (&cp, "%s%s", hbuf, cp2); 159957416Smarkm free (ep->value); 160057416Smarkm ep->value = (unsigned char *)cp; 160157416Smarkm } 160257416Smarkm /* 160357416Smarkm * If USER is not defined, but LOGNAME is, then add 160457416Smarkm * USER with the value from LOGNAME. By default, we 160557416Smarkm * don't export the USER variable. 160657416Smarkm */ 160757416Smarkm if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) { 160857416Smarkm env_define((unsigned char *)"USER", ep->value); 160957416Smarkm env_unexport((unsigned char *)"USER"); 161057416Smarkm } 161157416Smarkm env_export((unsigned char *)"DISPLAY"); 161257416Smarkm env_export((unsigned char *)"PRINTER"); 161357416Smarkm env_export((unsigned char *)"XAUTHORITY"); 161457416Smarkm} 161557416Smarkm 161657416Smarkmstruct env_lst * 161757416Smarkmenv_define(unsigned char *var, unsigned char *value) 161857416Smarkm{ 161957416Smarkm struct env_lst *ep; 162057416Smarkm 162157416Smarkm if ((ep = env_find(var))) { 162257416Smarkm if (ep->var) 162357416Smarkm free(ep->var); 162457416Smarkm if (ep->value) 162557416Smarkm free(ep->value); 162657416Smarkm } else { 162757416Smarkm ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 162857416Smarkm ep->next = envlisthead.next; 162957416Smarkm envlisthead.next = ep; 163057416Smarkm ep->prev = &envlisthead; 163157416Smarkm if (ep->next) 163257416Smarkm ep->next->prev = ep; 163357416Smarkm } 163457416Smarkm ep->welldefined = opt_welldefined((char *)var); 163557416Smarkm ep->export = 1; 163657416Smarkm ep->var = (unsigned char *)strdup((char *)var); 163757416Smarkm ep->value = (unsigned char *)strdup((char *)value); 163857416Smarkm return(ep); 163957416Smarkm} 164057416Smarkm 164157416Smarkmvoid 164257416Smarkmenv_undefine(unsigned char *var) 164357416Smarkm{ 164457416Smarkm struct env_lst *ep; 164557416Smarkm 164657416Smarkm if ((ep = env_find(var))) { 164757416Smarkm ep->prev->next = ep->next; 164857416Smarkm if (ep->next) 164957416Smarkm ep->next->prev = ep->prev; 165057416Smarkm if (ep->var) 165157416Smarkm free(ep->var); 165257416Smarkm if (ep->value) 165357416Smarkm free(ep->value); 165457416Smarkm free(ep); 165557416Smarkm } 165657416Smarkm} 165757416Smarkm 165857416Smarkmvoid 165957416Smarkmenv_export(unsigned char *var) 166057416Smarkm{ 166157416Smarkm struct env_lst *ep; 166257416Smarkm 166357416Smarkm if ((ep = env_find(var))) 166457416Smarkm ep->export = 1; 166557416Smarkm} 166657416Smarkm 166757416Smarkmvoid 166857416Smarkmenv_unexport(unsigned char *var) 166957416Smarkm{ 167057416Smarkm struct env_lst *ep; 167157416Smarkm 167257416Smarkm if ((ep = env_find(var))) 167357416Smarkm ep->export = 0; 167457416Smarkm} 167557416Smarkm 167657416Smarkmvoid 167757416Smarkmenv_send(unsigned char *var) 167857416Smarkm{ 167957416Smarkm struct env_lst *ep; 168057416Smarkm 168157416Smarkm if (my_state_is_wont(TELOPT_NEW_ENVIRON) 168257416Smarkm#ifdef OLD_ENVIRON 168357416Smarkm && my_state_is_wont(TELOPT_OLD_ENVIRON) 168457416Smarkm#endif 168557416Smarkm ) { 168657416Smarkm fprintf(stderr, 168757416Smarkm "Cannot send '%s': Telnet ENVIRON option not enabled\r\n", 168857416Smarkm var); 168957416Smarkm return; 169057416Smarkm } 169157416Smarkm ep = env_find(var); 169257416Smarkm if (ep == 0) { 169357416Smarkm fprintf(stderr, "Cannot send '%s': variable not defined\r\n", 169457416Smarkm var); 169557416Smarkm return; 169657416Smarkm } 169757416Smarkm env_opt_start_info(); 169857416Smarkm env_opt_add(ep->var); 169957416Smarkm env_opt_end(0); 170057416Smarkm} 170157416Smarkm 170257416Smarkmvoid 170357416Smarkmenv_list(void) 170457416Smarkm{ 170557416Smarkm struct env_lst *ep; 170657416Smarkm 170757416Smarkm for (ep = envlisthead.next; ep; ep = ep->next) { 170857416Smarkm printf("%c %-20s %s\r\n", ep->export ? '*' : ' ', 170957416Smarkm ep->var, ep->value); 171057416Smarkm } 171157416Smarkm} 171257416Smarkm 171357416Smarkmunsigned char * 171457416Smarkmenv_default(int init, int welldefined) 171557416Smarkm{ 171657416Smarkm static struct env_lst *nep = NULL; 171757416Smarkm 171857416Smarkm if (init) { 171957416Smarkm nep = &envlisthead; 172057416Smarkm return NULL; 172157416Smarkm } 172257416Smarkm if (nep) { 172357416Smarkm while ((nep = nep->next)) { 172457416Smarkm if (nep->export && (nep->welldefined == welldefined)) 172557416Smarkm return(nep->var); 172657416Smarkm } 172757416Smarkm } 172857416Smarkm return(NULL); 172957416Smarkm} 173057416Smarkm 173157416Smarkmunsigned char * 173257416Smarkmenv_getvalue(unsigned char *var) 173357416Smarkm{ 173457416Smarkm struct env_lst *ep; 173557416Smarkm 173657416Smarkm if ((ep = env_find(var))) 173757416Smarkm return(ep->value); 173857416Smarkm return(NULL); 173957416Smarkm} 174057416Smarkm 174157416Smarkm 174257416Smarkm#if defined(AUTHENTICATION) 174357416Smarkm/* 174457416Smarkm * The AUTHENTICATE command. 174557416Smarkm */ 174657416Smarkm 174757416Smarkmstruct authlist { 174857416Smarkm char *name; 174957416Smarkm char *help; 175057416Smarkm int (*handler)(); 175157416Smarkm int narg; 175257416Smarkm}; 175357416Smarkm 175457416Smarkmstatic int 175557416Smarkm auth_help (void); 175657416Smarkm 175757416Smarkmstruct authlist AuthList[] = { 175857416Smarkm { "status", "Display current status of authentication information", 175957416Smarkm auth_status, 0 }, 176057416Smarkm { "disable", "Disable an authentication type ('auth disable ?' for more)", 176157416Smarkm auth_disable, 1 }, 176257416Smarkm { "enable", "Enable an authentication type ('auth enable ?' for more)", 176357416Smarkm auth_enable, 1 }, 176457416Smarkm { "help", 0, auth_help, 0 }, 176557416Smarkm { "?", "Print help information", auth_help, 0 }, 176657416Smarkm { 0 }, 176757416Smarkm}; 176857416Smarkm 176957416Smarkmstatic int 177057416Smarkmauth_help() 177157416Smarkm{ 177257416Smarkm struct authlist *c; 177357416Smarkm 177457416Smarkm for (c = AuthList; c->name; c++) { 177557416Smarkm if (c->help) { 177657416Smarkm if (*c->help) 177757416Smarkm printf("%-15s %s\r\n", c->name, c->help); 177857416Smarkm else 177957416Smarkm printf("\r\n"); 178057416Smarkm } 178157416Smarkm } 178257416Smarkm return 0; 178357416Smarkm} 178457416Smarkm 178557416Smarkmstatic int 178657416Smarkmauth_cmd(int argc, char **argv) 178757416Smarkm{ 178857416Smarkm struct authlist *c; 178957416Smarkm 179057416Smarkm if (argc < 2) { 179157416Smarkm fprintf(stderr, 179257416Smarkm "Need an argument to 'auth' command. 'auth ?' for help.\r\n"); 179357416Smarkm return 0; 179457416Smarkm } 179557416Smarkm 179657416Smarkm c = (struct authlist *) 179757416Smarkm genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 179857416Smarkm if (c == 0) { 179957416Smarkm fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\r\n", 180057416Smarkm argv[1]); 180157416Smarkm return 0; 180257416Smarkm } 180357416Smarkm if (Ambiguous(c)) { 180457416Smarkm fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\r\n", 180557416Smarkm argv[1]); 180657416Smarkm return 0; 180757416Smarkm } 180857416Smarkm if (c->narg + 2 != argc) { 180957416Smarkm fprintf(stderr, 181057416Smarkm "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\r\n", 181157416Smarkm c->narg < argc + 2 ? "only " : "", 181257416Smarkm c->narg, c->narg == 1 ? "" : "s", c->name); 181357416Smarkm return 0; 181457416Smarkm } 181557416Smarkm return((*c->handler)(argv[2], argv[3])); 181657416Smarkm} 181757416Smarkm#endif 181857416Smarkm 181957416Smarkm 182057416Smarkm#if defined(ENCRYPTION) 182157416Smarkm/* 182257416Smarkm * The ENCRYPT command. 182357416Smarkm */ 182457416Smarkm 182557416Smarkmstruct encryptlist { 182657416Smarkm char *name; 182757416Smarkm char *help; 182857416Smarkm int (*handler)(); 182957416Smarkm int needconnect; 183057416Smarkm int minarg; 183157416Smarkm int maxarg; 183257416Smarkm}; 183357416Smarkm 183457416Smarkmstatic int 183557416Smarkm EncryptHelp (void); 183657416Smarkm 183757416Smarkmstruct encryptlist EncryptList[] = { 183857416Smarkm { "enable", "Enable encryption. ('encrypt enable ?' for more)", 183957416Smarkm EncryptEnable, 1, 1, 2 }, 184057416Smarkm { "disable", "Disable encryption. ('encrypt enable ?' for more)", 184157416Smarkm EncryptDisable, 0, 1, 2 }, 184257416Smarkm { "type", "Set encryptiong type. ('encrypt type ?' for more)", 184357416Smarkm EncryptType, 0, 1, 1 }, 184457416Smarkm { "start", "Start encryption. ('encrypt start ?' for more)", 184557416Smarkm EncryptStart, 1, 0, 1 }, 184657416Smarkm { "stop", "Stop encryption. ('encrypt stop ?' for more)", 184757416Smarkm EncryptStop, 1, 0, 1 }, 184857416Smarkm { "input", "Start encrypting the input stream", 184957416Smarkm EncryptStartInput, 1, 0, 0 }, 185057416Smarkm { "-input", "Stop encrypting the input stream", 185157416Smarkm EncryptStopInput, 1, 0, 0 }, 185257416Smarkm { "output", "Start encrypting the output stream", 185357416Smarkm EncryptStartOutput, 1, 0, 0 }, 185457416Smarkm { "-output", "Stop encrypting the output stream", 185557416Smarkm EncryptStopOutput, 1, 0, 0 }, 185657416Smarkm 185757416Smarkm { "status", "Display current status of authentication information", 185857416Smarkm EncryptStatus, 0, 0, 0 }, 185957416Smarkm { "help", 0, EncryptHelp, 0, 0, 0 }, 186057416Smarkm { "?", "Print help information", EncryptHelp, 0, 0, 0 }, 186157416Smarkm { 0 }, 186257416Smarkm}; 186357416Smarkm 186457416Smarkmstatic int 186557416SmarkmEncryptHelp() 186657416Smarkm{ 186757416Smarkm struct encryptlist *c; 186857416Smarkm 186957416Smarkm for (c = EncryptList; c->name; c++) { 187057416Smarkm if (c->help) { 187157416Smarkm if (*c->help) 187257416Smarkm printf("%-15s %s\r\n", c->name, c->help); 187357416Smarkm else 187457416Smarkm printf("\r\n"); 187557416Smarkm } 187657416Smarkm } 187757416Smarkm return 0; 187857416Smarkm} 187957416Smarkm 188057416Smarkmstatic int 188157416Smarkmencrypt_cmd(int argc, char **argv) 188257416Smarkm{ 188357416Smarkm struct encryptlist *c; 188457416Smarkm 188557416Smarkm c = (struct encryptlist *) 188657416Smarkm genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist)); 188757416Smarkm if (c == 0) { 188857416Smarkm fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\r\n", 188957416Smarkm argv[1]); 189057416Smarkm return 0; 189157416Smarkm } 189257416Smarkm if (Ambiguous(c)) { 189357416Smarkm fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\r\n", 189457416Smarkm argv[1]); 189557416Smarkm return 0; 189657416Smarkm } 189757416Smarkm argc -= 2; 189857416Smarkm if (argc < c->minarg || argc > c->maxarg) { 189957416Smarkm if (c->minarg == c->maxarg) { 190057416Smarkm fprintf(stderr, "Need %s%d argument%s ", 190157416Smarkm c->minarg < argc ? "only " : "", c->minarg, 190257416Smarkm c->minarg == 1 ? "" : "s"); 190357416Smarkm } else { 190457416Smarkm fprintf(stderr, "Need %s%d-%d arguments ", 190557416Smarkm c->maxarg < argc ? "only " : "", c->minarg, c->maxarg); 190657416Smarkm } 190757416Smarkm fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\r\n", 190857416Smarkm c->name); 190957416Smarkm return 0; 191057416Smarkm } 191157416Smarkm if (c->needconnect && !connected) { 191257416Smarkm if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) { 191357416Smarkm printf("?Need to be connected first.\r\n"); 191457416Smarkm return 0; 191557416Smarkm } 191657416Smarkm } 191757416Smarkm return ((*c->handler)(argc > 0 ? argv[2] : 0, 191857416Smarkm argc > 1 ? argv[3] : 0, 191957416Smarkm argc > 2 ? argv[4] : 0)); 192057416Smarkm} 192157416Smarkm#endif 192257416Smarkm 192357416Smarkm 192457416Smarkm/* 192557416Smarkm * Print status about the connection. 192657416Smarkm */ 192757416Smarkm 192857416Smarkmstatic int 192957416Smarkmstatus(int argc, char **argv) 193057416Smarkm{ 193157416Smarkm if (connected) { 193257416Smarkm printf("Connected to %s.\r\n", hostname); 193357416Smarkm if ((argc < 2) || strcmp(argv[1], "notmuch")) { 193457416Smarkm int mode = getconnmode(); 193557416Smarkm 193657416Smarkm if (my_want_state_is_will(TELOPT_LINEMODE)) { 193757416Smarkm printf("Operating with LINEMODE option\r\n"); 193857416Smarkm printf("%s line editing\r\n", (mode&MODE_EDIT) ? "Local" : "No"); 193957416Smarkm printf("%s catching of signals\r\n", 194057416Smarkm (mode&MODE_TRAPSIG) ? "Local" : "No"); 194157416Smarkm slcstate(); 194257416Smarkm#ifdef KLUDGELINEMODE 194357416Smarkm } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 194457416Smarkm printf("Operating in obsolete linemode\r\n"); 194557416Smarkm#endif 194657416Smarkm } else { 194757416Smarkm printf("Operating in single character mode\r\n"); 194857416Smarkm if (localchars) 194957416Smarkm printf("Catching signals locally\r\n"); 195057416Smarkm } 195157416Smarkm printf("%s character echo\r\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 195257416Smarkm if (my_want_state_is_will(TELOPT_LFLOW)) 195357416Smarkm printf("%s flow control\r\n", (mode&MODE_FLOW) ? "Local" : "No"); 195457416Smarkm#if defined(ENCRYPTION) 195557416Smarkm encrypt_display(); 195657416Smarkm#endif 195757416Smarkm } 195857416Smarkm } else { 195957416Smarkm printf("No connection.\r\n"); 196057416Smarkm } 196157416Smarkm printf("Escape character is '%s'.\r\n", control(escape)); 196257416Smarkm fflush(stdout); 196357416Smarkm return 1; 196457416Smarkm} 196557416Smarkm 196657416Smarkm#ifdef SIGINFO 196757416Smarkm/* 196857416Smarkm * Function that gets called when SIGINFO is received. 196957416Smarkm */ 197078527SassarRETSIGTYPE 197157416Smarkmayt_status(int ignore) 197257416Smarkm{ 197357416Smarkm call(status, "status", "notmuch", 0); 197457416Smarkm} 197557416Smarkm#endif 197657416Smarkm 197757416Smarkmstatic Command *getcmd(char *name); 197857416Smarkm 197957416Smarkmstatic void 198057416Smarkmcmdrc(char *m1, char *m2) 198157416Smarkm{ 198257416Smarkm static char rcname[128]; 198357416Smarkm Command *c; 198457416Smarkm FILE *rcfile; 198557416Smarkm int gotmachine = 0; 198657416Smarkm int l1 = strlen(m1); 198757416Smarkm int l2 = strlen(m2); 198857416Smarkm char m1save[64]; 198957416Smarkm 199057416Smarkm if (skiprc) 199157416Smarkm return; 199257416Smarkm 199357416Smarkm strlcpy(m1save, m1, sizeof(m1save)); 199457416Smarkm m1 = m1save; 199557416Smarkm 199657416Smarkm if (rcname[0] == 0) { 199757416Smarkm char *home = getenv("HOME"); 199857416Smarkm 199957416Smarkm snprintf (rcname, sizeof(rcname), "%s/.telnetrc", 200057416Smarkm home ? home : ""); 200157416Smarkm } 200257416Smarkm 200357416Smarkm if ((rcfile = fopen(rcname, "r")) == 0) { 200457416Smarkm return; 200557416Smarkm } 200657416Smarkm 200757416Smarkm for (;;) { 200857416Smarkm if (fgets(line, sizeof(line), rcfile) == NULL) 200957416Smarkm break; 201057416Smarkm if (line[0] == 0) 201157416Smarkm break; 201257416Smarkm if (line[0] == '#') 201357416Smarkm continue; 201457416Smarkm if (gotmachine) { 201557416Smarkm if (!isspace(line[0])) 201657416Smarkm gotmachine = 0; 201757416Smarkm } 201857416Smarkm if (gotmachine == 0) { 201957416Smarkm if (isspace(line[0])) 202057416Smarkm continue; 202157416Smarkm if (strncasecmp(line, m1, l1) == 0) 202257416Smarkm strncpy(line, &line[l1], sizeof(line) - l1); 202357416Smarkm else if (strncasecmp(line, m2, l2) == 0) 202457416Smarkm strncpy(line, &line[l2], sizeof(line) - l2); 202557416Smarkm else if (strncasecmp(line, "DEFAULT", 7) == 0) 202657416Smarkm strncpy(line, &line[7], sizeof(line) - 7); 202757416Smarkm else 202857416Smarkm continue; 202957416Smarkm if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 203057416Smarkm continue; 203157416Smarkm gotmachine = 1; 203257416Smarkm } 203357416Smarkm makeargv(); 203457416Smarkm if (margv[0] == 0) 203557416Smarkm continue; 203657416Smarkm c = getcmd(margv[0]); 203757416Smarkm if (Ambiguous(c)) { 203857416Smarkm printf("?Ambiguous command: %s\r\n", margv[0]); 203957416Smarkm continue; 204057416Smarkm } 204157416Smarkm if (c == 0) { 204257416Smarkm printf("?Invalid command: %s\r\n", margv[0]); 204357416Smarkm continue; 204457416Smarkm } 204557416Smarkm /* 204657416Smarkm * This should never happen... 204757416Smarkm */ 204857416Smarkm if (c->needconnect && !connected) { 204957416Smarkm printf("?Need to be connected first for %s.\r\n", margv[0]); 205057416Smarkm continue; 205157416Smarkm } 205257416Smarkm (*c->handler)(margc, margv); 205357416Smarkm } 205457416Smarkm fclose(rcfile); 205557416Smarkm} 205657416Smarkm 205757416Smarkmint 205857416Smarkmtn(int argc, char **argv) 205957416Smarkm{ 206057416Smarkm struct servent *sp = 0; 206157416Smarkm char *cmd, *hostp = 0, *portp = 0; 206257416Smarkm char *user = 0; 206357416Smarkm int port = 0; 206457416Smarkm 206557416Smarkm /* clear the socket address prior to use */ 206657416Smarkm 206757416Smarkm if (connected) { 206857416Smarkm printf("?Already connected to %s\r\n", hostname); 206957416Smarkm return 0; 207057416Smarkm } 207157416Smarkm if (argc < 2) { 207257416Smarkm strlcpy(line, "open ", sizeof(line)); 207357416Smarkm printf("(to) "); 207457416Smarkm fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 207557416Smarkm makeargv(); 207657416Smarkm argc = margc; 207757416Smarkm argv = margv; 207857416Smarkm } 207957416Smarkm cmd = *argv; 208057416Smarkm --argc; ++argv; 208157416Smarkm while (argc) { 208257416Smarkm if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?")) 208357416Smarkm goto usage; 208457416Smarkm if (strcmp(*argv, "-l") == 0) { 208557416Smarkm --argc; ++argv; 208657416Smarkm if (argc == 0) 208757416Smarkm goto usage; 208857416Smarkm user = strdup(*argv++); 208957416Smarkm --argc; 209057416Smarkm continue; 209157416Smarkm } 209257416Smarkm if (strcmp(*argv, "-a") == 0) { 209357416Smarkm --argc; ++argv; 209457416Smarkm autologin = 1; 209557416Smarkm continue; 209657416Smarkm } 209757416Smarkm if (hostp == 0) { 209857416Smarkm hostp = *argv++; 209957416Smarkm --argc; 210057416Smarkm continue; 210157416Smarkm } 210257416Smarkm if (portp == 0) { 210357416Smarkm portp = *argv++; 210457416Smarkm --argc; 210557416Smarkm continue; 210657416Smarkm } 210757416Smarkm usage: 210857416Smarkm printf("usage: %s [-l user] [-a] host-name [port]\r\n", cmd); 210957416Smarkm return 0; 211057416Smarkm } 211157416Smarkm if (hostp == 0) 211257416Smarkm goto usage; 211357416Smarkm 211472445Sassar strlcpy (_hostname, hostp, sizeof(_hostname)); 211578527Sassar hostp = _hostname; 211672445Sassar if (hostp[0] == '@' || hostp[0] == '!') { 211772445Sassar char *p; 211872445Sassar hostname = NULL; 211972445Sassar for (p = hostp + 1; *p; p++) { 212072445Sassar if (*p == ',' || *p == '@') 212172445Sassar hostname = p; 212272445Sassar } 212372445Sassar if (hostname == NULL) { 212472445Sassar fprintf(stderr, "%s: bad source route specification\n", hostp); 212572445Sassar return 0; 212672445Sassar } 212772445Sassar *hostname++ = '\0'; 212872445Sassar } else 212972445Sassar hostname = hostp; 213072445Sassar 213157416Smarkm if (portp) { 213257416Smarkm if (*portp == '-') { 213357416Smarkm portp++; 213457416Smarkm telnetport = 1; 213557416Smarkm } else 213657416Smarkm telnetport = 0; 213757416Smarkm port = atoi(portp); 213857416Smarkm if (port == 0) { 213957416Smarkm sp = roken_getservbyname(portp, "tcp"); 214057416Smarkm if (sp) 214157416Smarkm port = sp->s_port; 214257416Smarkm else { 214357416Smarkm printf("%s: bad port number\r\n", portp); 214457416Smarkm return 0; 214557416Smarkm } 214657416Smarkm } else { 214757416Smarkm port = htons(port); 214857416Smarkm } 214957416Smarkm } else { 215057416Smarkm if (sp == 0) { 215157416Smarkm sp = roken_getservbyname("telnet", "tcp"); 215257416Smarkm if (sp == 0) { 215357416Smarkm fprintf(stderr, "telnet: tcp/telnet: unknown service\r\n"); 215457416Smarkm return 0; 215557416Smarkm } 215657416Smarkm port = sp->s_port; 215757416Smarkm } 215857416Smarkm telnetport = 1; 215957416Smarkm } 216057416Smarkm 216157416Smarkm { 216257416Smarkm struct addrinfo *ai, *a, hints; 216357416Smarkm int error; 216457416Smarkm char portstr[NI_MAXSERV]; 216557416Smarkm 216657416Smarkm memset (&hints, 0, sizeof(hints)); 216757416Smarkm hints.ai_socktype = SOCK_STREAM; 216857416Smarkm hints.ai_protocol = IPPROTO_TCP; 216957416Smarkm hints.ai_flags = AI_CANONNAME; 217057416Smarkm 217157416Smarkm snprintf (portstr, sizeof(portstr), "%u", ntohs(port)); 217257416Smarkm 217372445Sassar error = getaddrinfo (hostname, portstr, &hints, &ai); 217457416Smarkm if (error) { 217572445Sassar fprintf (stderr, "%s: %s\r\n", hostname, gai_strerror (error)); 217657416Smarkm return 0; 217757416Smarkm } 217857416Smarkm 217957416Smarkm for (a = ai; a != NULL && connected == 0; a = a->ai_next) { 218057416Smarkm char addrstr[256]; 218157416Smarkm 218257416Smarkm if (a->ai_canonname != NULL) 218357416Smarkm strlcpy (_hostname, a->ai_canonname, sizeof(_hostname)); 218457416Smarkm 218557416Smarkm if (getnameinfo (a->ai_addr, a->ai_addrlen, 218657416Smarkm addrstr, sizeof(addrstr), 218757416Smarkm NULL, 0, NI_NUMERICHOST) != 0) 218857416Smarkm strlcpy (addrstr, "unknown address", sizeof(addrstr)); 218957416Smarkm 219057416Smarkm printf("Trying %s...\r\n", addrstr); 219157416Smarkm 219257416Smarkm net = socket (a->ai_family, a->ai_socktype, a->ai_protocol); 219357416Smarkm if (net < 0) { 219472445Sassar warn ("socket"); 219557416Smarkm continue; 219657416Smarkm } 219772445Sassar 219857416Smarkm#if defined(IP_OPTIONS) && defined(IPPROTO_IP) && defined(HAVE_SETSOCKOPT) 219972445Sassar if (hostp[0] == '@' || hostp[0] == '!') { 220072445Sassar char *srp = 0; 220172445Sassar int srlen; 220272445Sassar int proto, opt; 220372445Sassar 220472445Sassar if ((srlen = sourceroute(a, hostp, &srp, &proto, &opt)) < 0) { 220572445Sassar (void) NetClose(net); 220672445Sassar net = -1; 220772445Sassar continue; 220872445Sassar } 220972445Sassar if (srp && setsockopt(net, proto, opt, srp, srlen) < 0) 221072445Sassar perror("setsockopt (source route)"); 221172445Sassar } 221257416Smarkm#endif 221372445Sassar 221457416Smarkm#if defined(IPPROTO_IP) && defined(IP_TOS) 221557419Smarkm if (a->ai_family == AF_INET) { 221657416Smarkm# if defined(HAVE_GETTOSBYNAME) 221757416Smarkm struct tosent *tp; 221857416Smarkm if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 221957416Smarkm tos = tp->t_tos; 222057416Smarkm# endif 222157416Smarkm if (tos < 0) 222257416Smarkm tos = 020; /* Low Delay bit */ 222357416Smarkm if (tos 222457416Smarkm && (setsockopt(net, IPPROTO_IP, IP_TOS, 222557416Smarkm (void *)&tos, sizeof(int)) < 0) 222657416Smarkm && (errno != ENOPROTOOPT)) 222757416Smarkm perror("telnet: setsockopt (IP_TOS) (ignored)"); 222857416Smarkm } 222957416Smarkm#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 223057416Smarkm if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 223157416Smarkm perror("setsockopt (SO_DEBUG)"); 223257416Smarkm } 223357416Smarkm 223457416Smarkm if (connect (net, a->ai_addr, a->ai_addrlen) < 0) { 223557416Smarkm fprintf (stderr, "telnet: connect to address %s: %s\n", 223657416Smarkm addrstr, strerror(errno)); 223757416Smarkm NetClose(net); 223857416Smarkm if (a->ai_next != NULL) { 223957416Smarkm continue; 224057416Smarkm } else { 224157416Smarkm freeaddrinfo (ai); 224257416Smarkm return 0; 224357416Smarkm } 224457416Smarkm } 224557416Smarkm ++connected; 224657416Smarkm#if defined(AUTHENTICATION) || defined(ENCRYPTION) 224757416Smarkm auth_encrypt_connect(connected); 224857416Smarkm#endif 224957416Smarkm } 225072445Sassar freeaddrinfo (ai); 225172445Sassar if (connected == 0) 225272445Sassar return 0; 225357416Smarkm } 225457416Smarkm cmdrc(hostp, hostname); 225557416Smarkm if (autologin && user == NULL) 225657416Smarkm user = (char *)get_default_username (); 225757416Smarkm if (user) { 225857416Smarkm env_define((unsigned char *)"USER", (unsigned char *)user); 225957416Smarkm env_export((unsigned char *)"USER"); 226057416Smarkm } 226157416Smarkm call(status, "status", "notmuch", 0); 226257416Smarkm if (setjmp(peerdied) == 0) 226357416Smarkm my_telnet((char *)user); 226457416Smarkm NetClose(net); 226557416Smarkm ExitString("Connection closed by foreign host.\r\n",1); 226657416Smarkm /*NOTREACHED*/ 226757416Smarkm return 0; 226857416Smarkm} 226957416Smarkm 227057416Smarkm#define HELPINDENT ((int)sizeof ("connect")) 227157416Smarkm 227257416Smarkmstatic char 227357416Smarkm openhelp[] = "connect to a site", 227457416Smarkm closehelp[] = "close current connection", 227557416Smarkm logouthelp[] = "forcibly logout remote user and close the connection", 227657416Smarkm quithelp[] = "exit telnet", 227757416Smarkm statushelp[] = "print status information", 227857416Smarkm helphelp[] = "print help information", 227957416Smarkm sendhelp[] = "transmit special characters ('send ?' for more)", 228057416Smarkm sethelp[] = "set operating parameters ('set ?' for more)", 228157416Smarkm unsethelp[] = "unset operating parameters ('unset ?' for more)", 228257416Smarkm togglestring[] ="toggle operating parameters ('toggle ?' for more)", 228357416Smarkm slchelp[] = "change state of special charaters ('slc ?' for more)", 228457416Smarkm displayhelp[] = "display operating parameters", 228557416Smarkm#if defined(AUTHENTICATION) 228657416Smarkm authhelp[] = "turn on (off) authentication ('auth ?' for more)", 228757416Smarkm#endif 228857416Smarkm#if defined(ENCRYPTION) 228957416Smarkm encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)", 229057416Smarkm#endif 229157416Smarkm zhelp[] = "suspend telnet", 229257416Smarkm shellhelp[] = "invoke a subshell", 229357416Smarkm envhelp[] = "change environment variables ('environ ?' for more)", 229457416Smarkm modestring[] = "try to enter line or character mode ('mode ?' for more)"; 229557416Smarkm 229657416Smarkmstatic int help(int argc, char **argv); 229757416Smarkm 229857416Smarkmstatic Command cmdtab[] = { 229957416Smarkm { "close", closehelp, bye, 1 }, 230057416Smarkm { "logout", logouthelp, logout, 1 }, 230157416Smarkm { "display", displayhelp, display, 0 }, 230257416Smarkm { "mode", modestring, modecmd, 0 }, 230357416Smarkm { "open", openhelp, tn, 0 }, 230457416Smarkm { "quit", quithelp, quit, 0 }, 230557416Smarkm { "send", sendhelp, sendcmd, 0 }, 230657416Smarkm { "set", sethelp, setcmd, 0 }, 230757416Smarkm { "unset", unsethelp, unsetcmd, 0 }, 230857416Smarkm { "status", statushelp, status, 0 }, 230957416Smarkm { "toggle", togglestring, toggle, 0 }, 231057416Smarkm { "slc", slchelp, slccmd, 0 }, 231157416Smarkm#if defined(AUTHENTICATION) 231257416Smarkm { "auth", authhelp, auth_cmd, 0 }, 231357416Smarkm#endif 231457416Smarkm#if defined(ENCRYPTION) 231557416Smarkm { "encrypt", encrypthelp, encrypt_cmd, 0 }, 231657416Smarkm#endif 231757416Smarkm { "z", zhelp, telnetsuspend, 0 }, 231857416Smarkm { "!", shellhelp, shell, 0 }, 231957416Smarkm { "environ", envhelp, env_cmd, 0 }, 232057416Smarkm { "?", helphelp, help, 0 }, 232157416Smarkm { 0, 0, 0, 0 } 232257416Smarkm}; 232357416Smarkm 232457416Smarkmstatic char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; 232557416Smarkmstatic char escapehelp[] = "deprecated command -- use 'set escape' instead"; 232657416Smarkm 232757416Smarkmstatic Command cmdtab2[] = { 232857416Smarkm { "help", 0, help, 0 }, 232957416Smarkm { "escape", escapehelp, setescape, 0 }, 233057416Smarkm { "crmod", crmodhelp, togcrmod, 0 }, 233157416Smarkm { 0, 0, 0, 0 } 233257416Smarkm}; 233357416Smarkm 233457416Smarkm 233557416Smarkm/* 233657416Smarkm * Call routine with argc, argv set from args (terminated by 0). 233757416Smarkm */ 233857416Smarkm 233957416Smarkmstatic int 234057416Smarkmcall(intrtn_t routine, ...) 234157416Smarkm{ 234257416Smarkm va_list ap; 234357416Smarkm char *args[100]; 234457416Smarkm int argno = 0; 234557416Smarkm 234657416Smarkm va_start(ap, routine); 234757416Smarkm while ((args[argno++] = va_arg(ap, char *)) != 0); 234857416Smarkm va_end(ap); 234957416Smarkm return (*routine)(argno-1, args); 235057416Smarkm} 235157416Smarkm 235257416Smarkm 235357416Smarkmstatic Command 235457416Smarkm*getcmd(char *name) 235557416Smarkm{ 235657416Smarkm Command *cm; 235757416Smarkm 235857416Smarkm if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command)))) 235957416Smarkm return cm; 236057416Smarkm return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 236157416Smarkm} 236257416Smarkm 236357416Smarkmvoid 236457416Smarkmcommand(int top, char *tbuf, int cnt) 236557416Smarkm{ 236657416Smarkm Command *c; 236757416Smarkm 236857416Smarkm setcommandmode(); 236957416Smarkm if (!top) { 237057416Smarkm putchar('\n'); 237157416Smarkm } else { 237257416Smarkm signal(SIGINT, SIG_DFL); 237357416Smarkm signal(SIGQUIT, SIG_DFL); 237457416Smarkm } 237557416Smarkm for (;;) { 237657416Smarkm if (rlogin == _POSIX_VDISABLE) 237757416Smarkm printf("%s> ", prompt); 237857416Smarkm if (tbuf) { 237957416Smarkm char *cp; 238057416Smarkm cp = line; 238157416Smarkm while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 238257416Smarkm cnt--; 238357416Smarkm tbuf = 0; 238457416Smarkm if (cp == line || *--cp != '\n' || cp == line) 238557416Smarkm goto getline; 238657416Smarkm *cp = '\0'; 238757416Smarkm if (rlogin == _POSIX_VDISABLE) 238857416Smarkm printf("%s\r\n", line); 238957416Smarkm } else { 239057416Smarkm getline: 239157416Smarkm if (rlogin != _POSIX_VDISABLE) 239257416Smarkm printf("%s> ", prompt); 239357416Smarkm if (fgets(line, sizeof(line), stdin) == NULL) { 239457416Smarkm if (feof(stdin) || ferror(stdin)) { 239557416Smarkm quit(); 239657416Smarkm /*NOTREACHED*/ 239757416Smarkm } 239857416Smarkm break; 239957416Smarkm } 240057416Smarkm } 240157416Smarkm if (line[0] == 0) 240257416Smarkm break; 240357416Smarkm makeargv(); 240457416Smarkm if (margv[0] == 0) { 240557416Smarkm break; 240657416Smarkm } 240757416Smarkm c = getcmd(margv[0]); 240857416Smarkm if (Ambiguous(c)) { 240957416Smarkm printf("?Ambiguous command\r\n"); 241057416Smarkm continue; 241157416Smarkm } 241257416Smarkm if (c == 0) { 241357416Smarkm printf("?Invalid command\r\n"); 241457416Smarkm continue; 241557416Smarkm } 241657416Smarkm if (c->needconnect && !connected) { 241757416Smarkm printf("?Need to be connected first.\r\n"); 241857416Smarkm continue; 241957416Smarkm } 242057416Smarkm if ((*c->handler)(margc, margv)) { 242157416Smarkm break; 242257416Smarkm } 242357416Smarkm } 242457416Smarkm if (!top) { 242557416Smarkm if (!connected) { 242657416Smarkm longjmp(toplevel, 1); 242757416Smarkm /*NOTREACHED*/ 242857416Smarkm } 242957416Smarkm setconnmode(0); 243057416Smarkm } 243157416Smarkm} 243257416Smarkm 243357416Smarkm/* 243457416Smarkm * Help command. 243557416Smarkm */ 243657416Smarkmstatic int 243757416Smarkmhelp(int argc, char **argv) 243857416Smarkm{ 243957416Smarkm Command *c; 244057416Smarkm 244157416Smarkm if (argc == 1) { 244257416Smarkm printf("Commands may be abbreviated. Commands are:\r\n\r\n"); 244357416Smarkm for (c = cmdtab; c->name; c++) 244457416Smarkm if (c->help) { 244557416Smarkm printf("%-*s\t%s\r\n", HELPINDENT, c->name, 244657416Smarkm c->help); 244757416Smarkm } 244857416Smarkm return 0; 244957416Smarkm } 245057416Smarkm while (--argc > 0) { 245157416Smarkm char *arg; 245257416Smarkm arg = *++argv; 245357416Smarkm c = getcmd(arg); 245457416Smarkm if (Ambiguous(c)) 245557416Smarkm printf("?Ambiguous help command %s\r\n", arg); 245657416Smarkm else if (c == (Command *)0) 245757416Smarkm printf("?Invalid help command %s\r\n", arg); 245857416Smarkm else 245957416Smarkm printf("%s\r\n", c->help); 246057416Smarkm } 246157416Smarkm return 0; 246257416Smarkm} 246357416Smarkm 246457416Smarkm 246557416Smarkm#if defined(IP_OPTIONS) && defined(IPPROTO_IP) 246657416Smarkm 246757416Smarkm/* 246857416Smarkm * Source route is handed in as 246972445Sassar * [!]@hop1@hop2...@dst 247057416Smarkm * 247172445Sassar * If the leading ! is present, it is a strict source route, otherwise it is 247272445Sassar * assmed to be a loose source route. Note that leading ! is effective 247372445Sassar * only for IPv4 case. 247472445Sassar * 247557416Smarkm * We fill in the source route option as 247657416Smarkm * hop1,hop2,hop3...dest 247757416Smarkm * and return a pointer to hop1, which will 247857416Smarkm * be the address to connect() to. 247957416Smarkm * 248057416Smarkm * Arguments: 248172445Sassar * ai: The address (by struct addrinfo) for the final destination. 248257416Smarkm * 248372445Sassar * arg: Pointer to route list to decipher 248457416Smarkm * 248572445Sassar * cpp: Pointer to a pointer, so that sourceroute() can return 248672445Sassar * the address of result buffer (statically alloc'ed). 248772445Sassar * 248872445Sassar * protop/optp: 248972445Sassar * Pointer to an integer. The pointed variable 249057416Smarkm * lenp: pointer to an integer that contains the 249157416Smarkm * length of *cpp if *cpp != NULL. 249257416Smarkm * 249357416Smarkm * Return values: 249457416Smarkm * 249572445Sassar * Returns the length of the option pointed to by *cpp. If the 249657416Smarkm * return value is -1, there was a syntax error in the 249772445Sassar * option, either arg contained unknown characters or too many hosts, 249872445Sassar * or hostname cannot be resolved. 249957416Smarkm * 250072445Sassar * The caller needs to pass return value (len), *cpp, *protop and *optp 250172445Sassar * to setsockopt(2). 250257416Smarkm * 250372445Sassar * *cpp: Points to the result buffer. The region is statically 250472445Sassar * allocated by the function. 250557416Smarkm * 250672445Sassar * *protop: 250772445Sassar * protocol # to be passed to setsockopt(2). 250872445Sassar * 250972445Sassar * *optp: option # to be passed to setsockopt(2). 251072445Sassar * 251157416Smarkm */ 251272445Sassarint 251372445Sassarsourceroute(struct addrinfo *ai, 251472445Sassar char *arg, 251572445Sassar char **cpp, 251672445Sassar int *protop, 251772445Sassar int *optp) 251857416Smarkm{ 251972445Sassar char *cp, *cp2, *lsrp, *lsrep; 252072445Sassar struct addrinfo hints, *res; 252172445Sassar int len, error; 252272445Sassar struct sockaddr_in *sin; 252372445Sassar register char c; 252457416Smarkm static char lsr[44]; 252572445Sassar#ifdef INET6 252672445Sassar struct cmsghdr *cmsg; 252772445Sassar struct sockaddr_in6 *sin6; 252872445Sassar static char rhbuf[1024]; 252972445Sassar#endif 253057416Smarkm 253157416Smarkm /* 253272445Sassar * Verify the arguments. 253357416Smarkm */ 253472445Sassar if (cpp == NULL) 253572445Sassar return -1; 253657416Smarkm 253757416Smarkm cp = arg; 253857416Smarkm 253972445Sassar *cpp = NULL; 254072445Sassar switch (ai->ai_family) { 254172445Sassar case AF_INET: 254272445Sassar lsrp = lsr; 254372445Sassar lsrep = lsrp + sizeof(lsr); 254472445Sassar 254572445Sassar /* 254672445Sassar * Next, decide whether we have a loose source 254772445Sassar * route or a strict source route, and fill in 254872445Sassar * the begining of the option. 254972445Sassar */ 255072445Sassar if (*cp == '!') { 255172445Sassar cp++; 255272445Sassar *lsrp++ = IPOPT_SSRR; 255372445Sassar } else 255472445Sassar *lsrp++ = IPOPT_LSRR; 255572445Sassar if (*cp != '@') 255672445Sassar return -1; 255772445Sassar lsrp++; /* skip over length, we'll fill it in later */ 255872445Sassar *lsrp++ = 4; 255957416Smarkm cp++; 256072445Sassar *protop = IPPROTO_IP; 256172445Sassar *optp = IP_OPTIONS; 256272445Sassar break; 256372445Sassar#ifdef INET6 256472445Sassar case AF_INET6: 256572445Sassar/* this needs to be updated for rfc2292bis */ 256672445Sassar#ifdef IPV6_PKTOPTIONS 256772445Sassar cmsg = inet6_rthdr_init(rhbuf, IPV6_RTHDR_TYPE_0); 256872445Sassar if (*cp != '@') 256972445Sassar return -1; 257072445Sassar cp++; 257172445Sassar *protop = IPPROTO_IPV6; 257272445Sassar *optp = IPV6_PKTOPTIONS; 257372445Sassar break; 257472445Sassar#else 257572445Sassar return -1; 257672445Sassar#endif 257772445Sassar#endif 257872445Sassar default: 257972445Sassar return -1; 258072445Sassar } 258157416Smarkm 258272445Sassar memset(&hints, 0, sizeof(hints)); 258372445Sassar hints.ai_family = ai->ai_family; 258472445Sassar hints.ai_socktype = SOCK_STREAM; 258557416Smarkm 258657416Smarkm for (c = 0;;) { 258757416Smarkm if (c == ':') 258857416Smarkm cp2 = 0; 258972445Sassar else for (cp2 = cp; (c = *cp2) != '\0'; cp2++) { 259057416Smarkm if (c == ',') { 259157416Smarkm *cp2++ = '\0'; 259257416Smarkm if (*cp2 == '@') 259357416Smarkm cp2++; 259457416Smarkm } else if (c == '@') { 259557416Smarkm *cp2++ = '\0'; 259672445Sassar } 259772445Sassar#if 0 /*colon conflicts with IPv6 address*/ 259872445Sassar else if (c == ':') { 259957416Smarkm *cp2++ = '\0'; 260072445Sassar } 260172445Sassar#endif 260272445Sassar else 260357416Smarkm continue; 260457416Smarkm break; 260557416Smarkm } 260657416Smarkm if (!c) 260757416Smarkm cp2 = 0; 260857416Smarkm 260972445Sassar error = getaddrinfo(cp, NULL, &hints, &res); 261072445Sassar if (error) { 261172445Sassar fprintf(stderr, "%s: %s\n", cp, gai_strerror(error)); 261272445Sassar return -1; 261357416Smarkm } 261472445Sassar if (ai->ai_family != res->ai_family) { 261572445Sassar freeaddrinfo(res); 261672445Sassar return -1; 261772445Sassar } 261872445Sassar if (ai->ai_family == AF_INET) { 261972445Sassar /* 262072445Sassar * Check to make sure there is space for address 262172445Sassar */ 262272445Sassar if (lsrp + 4 > lsrep) { 262372445Sassar freeaddrinfo(res); 262472445Sassar return -1; 262572445Sassar } 262672445Sassar sin = (struct sockaddr_in *)res->ai_addr; 262772445Sassar memcpy(lsrp, &sin->sin_addr, sizeof(struct in_addr)); 262872445Sassar lsrp += sizeof(struct in_addr); 262972445Sassar } 263072445Sassar#ifdef INET6 263172445Sassar else if (ai->ai_family == AF_INET6) { 263272445Sassar sin6 = (struct sockaddr_in6 *)res->ai_addr; 263372445Sassar inet6_rthdr_add(cmsg, &sin6->sin6_addr, 263472445Sassar IPV6_RTHDR_LOOSE); 263572445Sassar } 263672445Sassar#endif 263772445Sassar else { 263872445Sassar freeaddrinfo(res); 263972445Sassar return -1; 264072445Sassar } 264172445Sassar freeaddrinfo(res); 264257416Smarkm if (cp2) 264357416Smarkm cp = cp2; 264457416Smarkm else 264557416Smarkm break; 264672445Sassar } 264772445Sassar if (ai->ai_family == AF_INET) { 264872445Sassar /* record the last hop */ 264957416Smarkm if (lsrp + 4 > lsrep) 265072445Sassar return -1; 265172445Sassar sin = (struct sockaddr_in *)ai->ai_addr; 265272445Sassar memcpy(lsrp, &sin->sin_addr, sizeof(struct in_addr)); 265372445Sassar lsrp += sizeof(struct in_addr); 265472445Sassar#ifndef sysV88 265572445Sassar lsr[IPOPT_OLEN] = lsrp - lsr; 265672445Sassar if (lsr[IPOPT_OLEN] <= 7 || lsr[IPOPT_OLEN] > 40) 265772445Sassar return -1; 265872445Sassar *lsrp++ = IPOPT_NOP; /*32bit word align*/ 265972445Sassar len = lsrp - lsr; 266072445Sassar *cpp = lsr; 266172445Sassar#else 266272445Sassar ipopt.io_len = lsrp - lsr; 266372445Sassar if (ipopt.io_len <= 5) /*is 3 better?*/ 266472445Sassar return -1; 266572445Sassar *cpp = (char 8)&ipopt; 266672445Sassar#endif 266757416Smarkm } 266872445Sassar#ifdef INET6 266972445Sassar else if (ai->ai_family == AF_INET6) { 267072445Sassar inet6_rthdr_lasthop(cmsg, IPV6_RTHDR_LOOSE); 267172445Sassar len = cmsg->cmsg_len; 267272445Sassar *cpp = rhbuf; 267357416Smarkm } 267472445Sassar#endif 267572445Sassar else 267672445Sassar return -1; 267772445Sassar return len; 267857416Smarkm} 267957416Smarkm#endif 2680