181cb6ddcSMark Murray /* 281cb6ddcSMark Murray * Copyright (c) 1988, 1990, 1993 381cb6ddcSMark Murray * The Regents of the University of California. All rights reserved. 481cb6ddcSMark Murray * 581cb6ddcSMark Murray * Redistribution and use in source and binary forms, with or without 681cb6ddcSMark Murray * modification, are permitted provided that the following conditions 781cb6ddcSMark Murray * are met: 881cb6ddcSMark Murray * 1. Redistributions of source code must retain the above copyright 981cb6ddcSMark Murray * notice, this list of conditions and the following disclaimer. 1081cb6ddcSMark Murray * 2. Redistributions in binary form must reproduce the above copyright 1181cb6ddcSMark Murray * notice, this list of conditions and the following disclaimer in the 1281cb6ddcSMark Murray * documentation and/or other materials provided with the distribution. 1381cb6ddcSMark Murray * 3. All advertising materials mentioning features or use of this software 1481cb6ddcSMark Murray * must display the following acknowledgement: 1581cb6ddcSMark Murray * This product includes software developed by the University of 1681cb6ddcSMark Murray * California, Berkeley and its contributors. 1781cb6ddcSMark Murray * 4. Neither the name of the University nor the names of its contributors 1881cb6ddcSMark Murray * may be used to endorse or promote products derived from this software 1981cb6ddcSMark Murray * without specific prior written permission. 2081cb6ddcSMark Murray * 2181cb6ddcSMark Murray * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2281cb6ddcSMark Murray * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2381cb6ddcSMark Murray * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2481cb6ddcSMark Murray * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2581cb6ddcSMark Murray * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2681cb6ddcSMark Murray * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2781cb6ddcSMark Murray * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2881cb6ddcSMark Murray * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2981cb6ddcSMark Murray * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3081cb6ddcSMark Murray * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3181cb6ddcSMark Murray * SUCH DAMAGE. 3281cb6ddcSMark Murray */ 3381cb6ddcSMark Murray 3477b7cdf1SDavid E. O'Brien #if 0 3581cb6ddcSMark Murray #ifndef lint 3604c426ccSMark Murray static const char sccsid[] = "@(#)telnet.c 8.4 (Berkeley) 5/30/95"; 37ecece7e3SPeter Wemm #endif 3877b7cdf1SDavid E. O'Brien #endif 3977b7cdf1SDavid E. O'Brien #include <sys/cdefs.h> 4077b7cdf1SDavid E. O'Brien __FBSDID("$FreeBSD$"); 4181cb6ddcSMark Murray 4281cb6ddcSMark Murray #include <sys/types.h> 4381cb6ddcSMark Murray 4481cb6ddcSMark Murray /* By the way, we need to include curses.h before telnet.h since, 4581cb6ddcSMark Murray * among other things, telnet.h #defines 'DO', which is a variable 4681cb6ddcSMark Murray * declared in curses.h. 4781cb6ddcSMark Murray */ 4881cb6ddcSMark Murray 4981cb6ddcSMark Murray #include <ctype.h> 508fa113e5SMark Murray #include <curses.h> 518fa113e5SMark Murray #include <signal.h> 5204c426ccSMark Murray #include <stdlib.h> 538fa113e5SMark Murray #include <term.h> 5404c426ccSMark Murray #include <unistd.h> 558fa113e5SMark Murray #include <arpa/telnet.h> 5604c426ccSMark Murray 5781cb6ddcSMark Murray #include "ring.h" 5881cb6ddcSMark Murray 5981cb6ddcSMark Murray #include "defines.h" 6081cb6ddcSMark Murray #include "externs.h" 6181cb6ddcSMark Murray #include "types.h" 6281cb6ddcSMark Murray #include "general.h" 6381cb6ddcSMark Murray 648fa113e5SMark Murray #ifdef AUTHENTICATION 6504c426ccSMark Murray #include <libtelnet/auth.h> 6604c426ccSMark Murray #endif 678fa113e5SMark Murray #ifdef ENCRYPTION 6804c426ccSMark Murray #include <libtelnet/encrypt.h> 6904c426ccSMark Murray #endif 7004c426ccSMark Murray #include <libtelnet/misc.h> 7181cb6ddcSMark Murray 7281cb6ddcSMark Murray #define strip(x) ((my_want_state_is_wont(TELOPT_BINARY)) ? ((x)&0x7f) : (x)) 7381cb6ddcSMark Murray 7481cb6ddcSMark Murray static unsigned char subbuffer[SUBBUFSIZE], 7581cb6ddcSMark Murray *subpointer, *subend; /* buffer for sub-options */ 7681cb6ddcSMark Murray #define SB_CLEAR() subpointer = subbuffer; 7781cb6ddcSMark Murray #define SB_TERM() { subend = subpointer; SB_CLEAR(); } 7881cb6ddcSMark Murray #define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \ 7981cb6ddcSMark Murray *subpointer++ = (c); \ 8081cb6ddcSMark Murray } 8181cb6ddcSMark Murray 8281cb6ddcSMark Murray #define SB_GET() ((*subpointer++)&0xff) 8381cb6ddcSMark Murray #define SB_PEEK() ((*subpointer)&0xff) 8481cb6ddcSMark Murray #define SB_EOF() (subpointer >= subend) 8581cb6ddcSMark Murray #define SB_LEN() (subend - subpointer) 8681cb6ddcSMark Murray 8781cb6ddcSMark Murray char options[256]; /* The combined options */ 8881cb6ddcSMark Murray char do_dont_resp[256]; 8981cb6ddcSMark Murray char will_wont_resp[256]; 9081cb6ddcSMark Murray 9181cb6ddcSMark Murray int 9281cb6ddcSMark Murray eight = 0, 9381cb6ddcSMark Murray autologin = 0, /* Autologin anyone? */ 9481cb6ddcSMark Murray skiprc = 0, 9581cb6ddcSMark Murray connected, 9681cb6ddcSMark Murray showoptions, 9781cb6ddcSMark Murray ISend, /* trying to send network data in */ 98074e8e8eSMark Murray telnet_debug = 0, 9981cb6ddcSMark Murray crmod, 10081cb6ddcSMark Murray netdata, /* Print out network data flow */ 10181cb6ddcSMark Murray crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */ 10281cb6ddcSMark Murray telnetport, 10381cb6ddcSMark Murray SYNCHing, /* we are in TELNET SYNCH mode */ 10481cb6ddcSMark Murray flushout, /* flush output */ 10581cb6ddcSMark Murray autoflush = 0, /* flush output when interrupting? */ 10681cb6ddcSMark Murray autosynch, /* send interrupt characters with SYNCH? */ 10781cb6ddcSMark Murray localflow, /* we handle flow control locally */ 10881cb6ddcSMark Murray restartany, /* if flow control enabled, restart on any character */ 10981cb6ddcSMark Murray localchars, /* we recognize interrupt/quit */ 11081cb6ddcSMark Murray donelclchars, /* the user has set "localchars" */ 11181cb6ddcSMark Murray donebinarytoggle, /* the user has put us in binary */ 11281cb6ddcSMark Murray dontlecho, /* do we suppress local echoing right now? */ 11304c426ccSMark Murray globalmode, 11442cf8219SRuslan Ermilov doaddrlookup = 1, /* do a reverse address lookup? */ 11504c426ccSMark Murray clienteof = 0; 11681cb6ddcSMark Murray 11781cb6ddcSMark Murray char *prompt = 0; 11821f083c0SMark Murray #ifdef ENCRYPTION 119cd189e11SPeter Wemm char *line; /* hack around breakage in sra.c :-( !! */ 12021f083c0SMark Murray #endif 12181cb6ddcSMark Murray 12281cb6ddcSMark Murray cc_t escape; 12381cb6ddcSMark Murray cc_t rlogin; 12481cb6ddcSMark Murray #ifdef KLUDGELINEMODE 12581cb6ddcSMark Murray cc_t echoc; 12681cb6ddcSMark Murray #endif 12781cb6ddcSMark Murray 12881cb6ddcSMark Murray /* 12981cb6ddcSMark Murray * Telnet receiver states for fsm 13081cb6ddcSMark Murray */ 13181cb6ddcSMark Murray #define TS_DATA 0 13281cb6ddcSMark Murray #define TS_IAC 1 13381cb6ddcSMark Murray #define TS_WILL 2 13481cb6ddcSMark Murray #define TS_WONT 3 13581cb6ddcSMark Murray #define TS_DO 4 13681cb6ddcSMark Murray #define TS_DONT 5 13781cb6ddcSMark Murray #define TS_CR 6 13881cb6ddcSMark Murray #define TS_SB 7 /* sub-option collection */ 13981cb6ddcSMark Murray #define TS_SE 8 /* looking for sub-option end */ 14081cb6ddcSMark Murray 14181cb6ddcSMark Murray static int telrcv_state; 14281cb6ddcSMark Murray #ifdef OLD_ENVIRON 14381cb6ddcSMark Murray unsigned char telopt_environ = TELOPT_NEW_ENVIRON; 14481cb6ddcSMark Murray #else 14581cb6ddcSMark Murray # define telopt_environ TELOPT_NEW_ENVIRON 14681cb6ddcSMark Murray #endif 14781cb6ddcSMark Murray 1488fa113e5SMark Murray jmp_buf toplevel; 14981cb6ddcSMark Murray jmp_buf peerdied; 15081cb6ddcSMark Murray 15181cb6ddcSMark Murray int flushline; 15281cb6ddcSMark Murray int linemode; 15381cb6ddcSMark Murray 15481cb6ddcSMark Murray #ifdef KLUDGELINEMODE 15581cb6ddcSMark Murray int kludgelinemode = 1; 15681cb6ddcSMark Murray #endif 15781cb6ddcSMark Murray 1588fa113e5SMark Murray static int is_unique(char *, char **, char **); 1598fa113e5SMark Murray 16081cb6ddcSMark Murray /* 16181cb6ddcSMark Murray * The following are some clocks used to decide how to interpret 16281cb6ddcSMark Murray * the relationship between various variables. 16381cb6ddcSMark Murray */ 16481cb6ddcSMark Murray 16581cb6ddcSMark Murray Clocks clocks; 16681cb6ddcSMark Murray 16781cb6ddcSMark Murray /* 16881cb6ddcSMark Murray * Initialize telnet environment. 16981cb6ddcSMark Murray */ 17081cb6ddcSMark Murray 17181cb6ddcSMark Murray void 1728fa113e5SMark Murray init_telnet(void) 17381cb6ddcSMark Murray { 17481cb6ddcSMark Murray env_init(); 17581cb6ddcSMark Murray 17681cb6ddcSMark Murray SB_CLEAR(); 17781cb6ddcSMark Murray ClearArray(options); 17881cb6ddcSMark Murray 1798fa113e5SMark Murray connected = ISend = localflow = donebinarytoggle = 0; 1808fa113e5SMark Murray #ifdef AUTHENTICATION 1818fa113e5SMark Murray #ifdef ENCRYPTION 18281cb6ddcSMark Murray auth_encrypt_connect(connected); 1838fa113e5SMark Murray #endif 1848fa113e5SMark Murray #endif 18581cb6ddcSMark Murray restartany = -1; 18681cb6ddcSMark Murray 18781cb6ddcSMark Murray SYNCHing = 0; 18881cb6ddcSMark Murray 18981cb6ddcSMark Murray /* Don't change NetTrace */ 19081cb6ddcSMark Murray 19181cb6ddcSMark Murray escape = CONTROL(']'); 19281cb6ddcSMark Murray rlogin = _POSIX_VDISABLE; 19381cb6ddcSMark Murray #ifdef KLUDGELINEMODE 19481cb6ddcSMark Murray echoc = CONTROL('E'); 19581cb6ddcSMark Murray #endif 19681cb6ddcSMark Murray 19781cb6ddcSMark Murray flushline = 1; 19881cb6ddcSMark Murray telrcv_state = TS_DATA; 19981cb6ddcSMark Murray } 20081cb6ddcSMark Murray 20181cb6ddcSMark Murray 20281cb6ddcSMark Murray /* 20381cb6ddcSMark Murray * These routines are in charge of sending option negotiations 20481cb6ddcSMark Murray * to the other side. 20581cb6ddcSMark Murray * 20681cb6ddcSMark Murray * The basic idea is that we send the negotiation if either side 20781cb6ddcSMark Murray * is in disagreement as to what the current state should be. 20881cb6ddcSMark Murray */ 20981cb6ddcSMark Murray 21081cb6ddcSMark Murray void 2118fa113e5SMark Murray send_do(int c, int init) 21281cb6ddcSMark Murray { 21381cb6ddcSMark Murray if (init) { 21481cb6ddcSMark Murray if (((do_dont_resp[c] == 0) && my_state_is_do(c)) || 21581cb6ddcSMark Murray my_want_state_is_do(c)) 21681cb6ddcSMark Murray return; 21781cb6ddcSMark Murray set_my_want_state_do(c); 21881cb6ddcSMark Murray do_dont_resp[c]++; 21981cb6ddcSMark Murray } 22081cb6ddcSMark Murray NET2ADD(IAC, DO); 22181cb6ddcSMark Murray NETADD(c); 22281cb6ddcSMark Murray printoption("SENT", DO, c); 22381cb6ddcSMark Murray } 22481cb6ddcSMark Murray 22581cb6ddcSMark Murray void 2268fa113e5SMark Murray send_dont(int c, int init) 22781cb6ddcSMark Murray { 22881cb6ddcSMark Murray if (init) { 22981cb6ddcSMark Murray if (((do_dont_resp[c] == 0) && my_state_is_dont(c)) || 23081cb6ddcSMark Murray my_want_state_is_dont(c)) 23181cb6ddcSMark Murray return; 23281cb6ddcSMark Murray set_my_want_state_dont(c); 23381cb6ddcSMark Murray do_dont_resp[c]++; 23481cb6ddcSMark Murray } 23581cb6ddcSMark Murray NET2ADD(IAC, DONT); 23681cb6ddcSMark Murray NETADD(c); 23781cb6ddcSMark Murray printoption("SENT", DONT, c); 23881cb6ddcSMark Murray } 23981cb6ddcSMark Murray 24081cb6ddcSMark Murray void 2418fa113e5SMark Murray send_will(int c, int init) 24281cb6ddcSMark Murray { 24381cb6ddcSMark Murray if (init) { 24481cb6ddcSMark Murray if (((will_wont_resp[c] == 0) && my_state_is_will(c)) || 24581cb6ddcSMark Murray my_want_state_is_will(c)) 24681cb6ddcSMark Murray return; 24781cb6ddcSMark Murray set_my_want_state_will(c); 24881cb6ddcSMark Murray will_wont_resp[c]++; 24981cb6ddcSMark Murray } 25081cb6ddcSMark Murray NET2ADD(IAC, WILL); 25181cb6ddcSMark Murray NETADD(c); 25281cb6ddcSMark Murray printoption("SENT", WILL, c); 25381cb6ddcSMark Murray } 25481cb6ddcSMark Murray 25581cb6ddcSMark Murray void 2568fa113e5SMark Murray send_wont(int c, int init) 25781cb6ddcSMark Murray { 25881cb6ddcSMark Murray if (init) { 25981cb6ddcSMark Murray if (((will_wont_resp[c] == 0) && my_state_is_wont(c)) || 26081cb6ddcSMark Murray my_want_state_is_wont(c)) 26181cb6ddcSMark Murray return; 26281cb6ddcSMark Murray set_my_want_state_wont(c); 26381cb6ddcSMark Murray will_wont_resp[c]++; 26481cb6ddcSMark Murray } 26581cb6ddcSMark Murray NET2ADD(IAC, WONT); 26681cb6ddcSMark Murray NETADD(c); 26781cb6ddcSMark Murray printoption("SENT", WONT, c); 26881cb6ddcSMark Murray } 26981cb6ddcSMark Murray 27081cb6ddcSMark Murray void 2718fa113e5SMark Murray willoption(int option) 27281cb6ddcSMark Murray { 27381cb6ddcSMark Murray int new_state_ok = 0; 27481cb6ddcSMark Murray 27581cb6ddcSMark Murray if (do_dont_resp[option]) { 27681cb6ddcSMark Murray --do_dont_resp[option]; 27781cb6ddcSMark Murray if (do_dont_resp[option] && my_state_is_do(option)) 27881cb6ddcSMark Murray --do_dont_resp[option]; 27981cb6ddcSMark Murray } 28081cb6ddcSMark Murray 28181cb6ddcSMark Murray if ((do_dont_resp[option] == 0) && my_want_state_is_dont(option)) { 28281cb6ddcSMark Murray 28381cb6ddcSMark Murray switch (option) { 28481cb6ddcSMark Murray 28581cb6ddcSMark Murray case TELOPT_ECHO: 28681cb6ddcSMark Murray case TELOPT_BINARY: 28781cb6ddcSMark Murray case TELOPT_SGA: 28881cb6ddcSMark Murray settimer(modenegotiated); 28981cb6ddcSMark Murray /* FALLTHROUGH */ 29081cb6ddcSMark Murray case TELOPT_STATUS: 2918fa113e5SMark Murray #ifdef AUTHENTICATION 29281cb6ddcSMark Murray case TELOPT_AUTHENTICATION: 29381cb6ddcSMark Murray #endif 29481cb6ddcSMark Murray #ifdef ENCRYPTION 29581cb6ddcSMark Murray case TELOPT_ENCRYPT: 29681cb6ddcSMark Murray #endif /* ENCRYPTION */ 29781cb6ddcSMark Murray new_state_ok = 1; 29881cb6ddcSMark Murray break; 29981cb6ddcSMark Murray 30081cb6ddcSMark Murray case TELOPT_TM: 30181cb6ddcSMark Murray if (flushout) 30281cb6ddcSMark Murray flushout = 0; 30381cb6ddcSMark Murray /* 30481cb6ddcSMark Murray * Special case for TM. If we get back a WILL, 30581cb6ddcSMark Murray * pretend we got back a WONT. 30681cb6ddcSMark Murray */ 30781cb6ddcSMark Murray set_my_want_state_dont(option); 30881cb6ddcSMark Murray set_my_state_dont(option); 30981cb6ddcSMark Murray return; /* Never reply to TM will's/wont's */ 31081cb6ddcSMark Murray 31181cb6ddcSMark Murray case TELOPT_LINEMODE: 31281cb6ddcSMark Murray default: 31381cb6ddcSMark Murray break; 31481cb6ddcSMark Murray } 31581cb6ddcSMark Murray 31681cb6ddcSMark Murray if (new_state_ok) { 31781cb6ddcSMark Murray set_my_want_state_do(option); 31881cb6ddcSMark Murray send_do(option, 0); 31981cb6ddcSMark Murray setconnmode(0); /* possibly set new tty mode */ 32081cb6ddcSMark Murray } else { 32181cb6ddcSMark Murray do_dont_resp[option]++; 32281cb6ddcSMark Murray send_dont(option, 0); 32381cb6ddcSMark Murray } 32481cb6ddcSMark Murray } 32581cb6ddcSMark Murray set_my_state_do(option); 32681cb6ddcSMark Murray #ifdef ENCRYPTION 32781cb6ddcSMark Murray if (option == TELOPT_ENCRYPT) 32881cb6ddcSMark Murray encrypt_send_support(); 32981cb6ddcSMark Murray #endif /* ENCRYPTION */ 33081cb6ddcSMark Murray } 33181cb6ddcSMark Murray 33281cb6ddcSMark Murray void 3338fa113e5SMark Murray wontoption(int option) 33481cb6ddcSMark Murray { 33581cb6ddcSMark Murray if (do_dont_resp[option]) { 33681cb6ddcSMark Murray --do_dont_resp[option]; 33781cb6ddcSMark Murray if (do_dont_resp[option] && my_state_is_dont(option)) 33881cb6ddcSMark Murray --do_dont_resp[option]; 33981cb6ddcSMark Murray } 34081cb6ddcSMark Murray 34181cb6ddcSMark Murray if ((do_dont_resp[option] == 0) && my_want_state_is_do(option)) { 34281cb6ddcSMark Murray 34381cb6ddcSMark Murray switch (option) { 34481cb6ddcSMark Murray 34581cb6ddcSMark Murray #ifdef KLUDGELINEMODE 34681cb6ddcSMark Murray case TELOPT_SGA: 34781cb6ddcSMark Murray if (!kludgelinemode) 34881cb6ddcSMark Murray break; 34981cb6ddcSMark Murray /* FALLTHROUGH */ 35081cb6ddcSMark Murray #endif 35181cb6ddcSMark Murray case TELOPT_ECHO: 35281cb6ddcSMark Murray settimer(modenegotiated); 35381cb6ddcSMark Murray break; 35481cb6ddcSMark Murray 35581cb6ddcSMark Murray case TELOPT_TM: 35681cb6ddcSMark Murray if (flushout) 35781cb6ddcSMark Murray flushout = 0; 35881cb6ddcSMark Murray set_my_want_state_dont(option); 35981cb6ddcSMark Murray set_my_state_dont(option); 36081cb6ddcSMark Murray return; /* Never reply to TM will's/wont's */ 36181cb6ddcSMark Murray 36281cb6ddcSMark Murray default: 36381cb6ddcSMark Murray break; 36481cb6ddcSMark Murray } 36581cb6ddcSMark Murray set_my_want_state_dont(option); 36681cb6ddcSMark Murray if (my_state_is_do(option)) 36781cb6ddcSMark Murray send_dont(option, 0); 36881cb6ddcSMark Murray setconnmode(0); /* Set new tty mode */ 36981cb6ddcSMark Murray } else if (option == TELOPT_TM) { 37081cb6ddcSMark Murray /* 37181cb6ddcSMark Murray * Special case for TM. 37281cb6ddcSMark Murray */ 37381cb6ddcSMark Murray if (flushout) 37481cb6ddcSMark Murray flushout = 0; 37581cb6ddcSMark Murray set_my_want_state_dont(option); 37681cb6ddcSMark Murray } 37781cb6ddcSMark Murray set_my_state_dont(option); 37881cb6ddcSMark Murray } 37981cb6ddcSMark Murray 38081cb6ddcSMark Murray static void 3818fa113e5SMark Murray dooption(int option) 38281cb6ddcSMark Murray { 38381cb6ddcSMark Murray int new_state_ok = 0; 38481cb6ddcSMark Murray 38581cb6ddcSMark Murray if (will_wont_resp[option]) { 38681cb6ddcSMark Murray --will_wont_resp[option]; 38781cb6ddcSMark Murray if (will_wont_resp[option] && my_state_is_will(option)) 38881cb6ddcSMark Murray --will_wont_resp[option]; 38981cb6ddcSMark Murray } 39081cb6ddcSMark Murray 39181cb6ddcSMark Murray if (will_wont_resp[option] == 0) { 39281cb6ddcSMark Murray if (my_want_state_is_wont(option)) { 39381cb6ddcSMark Murray 39481cb6ddcSMark Murray switch (option) { 39581cb6ddcSMark Murray 39681cb6ddcSMark Murray case TELOPT_TM: 39781cb6ddcSMark Murray /* 39881cb6ddcSMark Murray * Special case for TM. We send a WILL, but pretend 39981cb6ddcSMark Murray * we sent WONT. 40081cb6ddcSMark Murray */ 40181cb6ddcSMark Murray send_will(option, 0); 40281cb6ddcSMark Murray set_my_want_state_wont(TELOPT_TM); 40381cb6ddcSMark Murray set_my_state_wont(TELOPT_TM); 40481cb6ddcSMark Murray return; 40581cb6ddcSMark Murray 40681cb6ddcSMark Murray case TELOPT_BINARY: /* binary mode */ 40781cb6ddcSMark Murray case TELOPT_NAWS: /* window size */ 40881cb6ddcSMark Murray case TELOPT_TSPEED: /* terminal speed */ 40981cb6ddcSMark Murray case TELOPT_LFLOW: /* local flow control */ 41081cb6ddcSMark Murray case TELOPT_TTYPE: /* terminal type option */ 41181cb6ddcSMark Murray case TELOPT_SGA: /* no big deal */ 41281cb6ddcSMark Murray #ifdef ENCRYPTION 41381cb6ddcSMark Murray case TELOPT_ENCRYPT: /* encryption variable option */ 41481cb6ddcSMark Murray #endif /* ENCRYPTION */ 41581cb6ddcSMark Murray new_state_ok = 1; 41681cb6ddcSMark Murray break; 41781cb6ddcSMark Murray 41881cb6ddcSMark Murray case TELOPT_NEW_ENVIRON: /* New environment variable option */ 41981cb6ddcSMark Murray #ifdef OLD_ENVIRON 42081cb6ddcSMark Murray if (my_state_is_will(TELOPT_OLD_ENVIRON)) 42181cb6ddcSMark Murray send_wont(TELOPT_OLD_ENVIRON, 1); /* turn off the old */ 42281cb6ddcSMark Murray goto env_common; 42381cb6ddcSMark Murray case TELOPT_OLD_ENVIRON: /* Old environment variable option */ 42481cb6ddcSMark Murray if (my_state_is_will(TELOPT_NEW_ENVIRON)) 42581cb6ddcSMark Murray break; /* Don't enable if new one is in use! */ 42681cb6ddcSMark Murray env_common: 42781cb6ddcSMark Murray telopt_environ = option; 42881cb6ddcSMark Murray #endif 42981cb6ddcSMark Murray new_state_ok = 1; 43081cb6ddcSMark Murray break; 43181cb6ddcSMark Murray 4328fa113e5SMark Murray #ifdef AUTHENTICATION 43381cb6ddcSMark Murray case TELOPT_AUTHENTICATION: 43481cb6ddcSMark Murray if (autologin) 43581cb6ddcSMark Murray new_state_ok = 1; 43681cb6ddcSMark Murray break; 43781cb6ddcSMark Murray #endif 43881cb6ddcSMark Murray 43981cb6ddcSMark Murray case TELOPT_XDISPLOC: /* X Display location */ 4408fa113e5SMark Murray if (env_getvalue("DISPLAY")) 44181cb6ddcSMark Murray new_state_ok = 1; 44281cb6ddcSMark Murray break; 44381cb6ddcSMark Murray 44481cb6ddcSMark Murray case TELOPT_LINEMODE: 44581cb6ddcSMark Murray #ifdef KLUDGELINEMODE 44681cb6ddcSMark Murray kludgelinemode = 0; 44781cb6ddcSMark Murray send_do(TELOPT_SGA, 1); 44881cb6ddcSMark Murray #endif 44981cb6ddcSMark Murray set_my_want_state_will(TELOPT_LINEMODE); 45081cb6ddcSMark Murray send_will(option, 0); 45181cb6ddcSMark Murray set_my_state_will(TELOPT_LINEMODE); 45281cb6ddcSMark Murray slc_init(); 45381cb6ddcSMark Murray return; 45481cb6ddcSMark Murray 45581cb6ddcSMark Murray case TELOPT_ECHO: /* We're never going to echo... */ 45681cb6ddcSMark Murray default: 45781cb6ddcSMark Murray break; 45881cb6ddcSMark Murray } 45981cb6ddcSMark Murray 46081cb6ddcSMark Murray if (new_state_ok) { 46181cb6ddcSMark Murray set_my_want_state_will(option); 46281cb6ddcSMark Murray send_will(option, 0); 46381cb6ddcSMark Murray setconnmode(0); /* Set new tty mode */ 46481cb6ddcSMark Murray } else { 46581cb6ddcSMark Murray will_wont_resp[option]++; 46681cb6ddcSMark Murray send_wont(option, 0); 46781cb6ddcSMark Murray } 46881cb6ddcSMark Murray } else { 46981cb6ddcSMark Murray /* 47081cb6ddcSMark Murray * Handle options that need more things done after the 47181cb6ddcSMark Murray * other side has acknowledged the option. 47281cb6ddcSMark Murray */ 47381cb6ddcSMark Murray switch (option) { 47481cb6ddcSMark Murray case TELOPT_LINEMODE: 47581cb6ddcSMark Murray #ifdef KLUDGELINEMODE 47681cb6ddcSMark Murray kludgelinemode = 0; 47781cb6ddcSMark Murray send_do(TELOPT_SGA, 1); 47881cb6ddcSMark Murray #endif 47981cb6ddcSMark Murray set_my_state_will(option); 48081cb6ddcSMark Murray slc_init(); 48181cb6ddcSMark Murray send_do(TELOPT_SGA, 0); 48281cb6ddcSMark Murray return; 48381cb6ddcSMark Murray } 48481cb6ddcSMark Murray } 48581cb6ddcSMark Murray } 48681cb6ddcSMark Murray set_my_state_will(option); 48781cb6ddcSMark Murray } 48881cb6ddcSMark Murray 48981cb6ddcSMark Murray static void 4908fa113e5SMark Murray dontoption(int option) 49181cb6ddcSMark Murray { 49281cb6ddcSMark Murray 49381cb6ddcSMark Murray if (will_wont_resp[option]) { 49481cb6ddcSMark Murray --will_wont_resp[option]; 49581cb6ddcSMark Murray if (will_wont_resp[option] && my_state_is_wont(option)) 49681cb6ddcSMark Murray --will_wont_resp[option]; 49781cb6ddcSMark Murray } 49881cb6ddcSMark Murray 49981cb6ddcSMark Murray if ((will_wont_resp[option] == 0) && my_want_state_is_will(option)) { 50081cb6ddcSMark Murray switch (option) { 50181cb6ddcSMark Murray case TELOPT_LINEMODE: 50281cb6ddcSMark Murray linemode = 0; /* put us back to the default state */ 50381cb6ddcSMark Murray break; 50481cb6ddcSMark Murray #ifdef OLD_ENVIRON 50581cb6ddcSMark Murray case TELOPT_NEW_ENVIRON: 50681cb6ddcSMark Murray /* 50781cb6ddcSMark Murray * The new environ option wasn't recognized, try 50881cb6ddcSMark Murray * the old one. 50981cb6ddcSMark Murray */ 51081cb6ddcSMark Murray send_will(TELOPT_OLD_ENVIRON, 1); 51181cb6ddcSMark Murray telopt_environ = TELOPT_OLD_ENVIRON; 51281cb6ddcSMark Murray break; 51381cb6ddcSMark Murray #endif 51481cb6ddcSMark Murray } 51581cb6ddcSMark Murray /* we always accept a DONT */ 51681cb6ddcSMark Murray set_my_want_state_wont(option); 51781cb6ddcSMark Murray if (my_state_is_will(option)) 51881cb6ddcSMark Murray send_wont(option, 0); 51981cb6ddcSMark Murray setconnmode(0); /* Set new tty mode */ 52081cb6ddcSMark Murray } 52181cb6ddcSMark Murray set_my_state_wont(option); 52281cb6ddcSMark Murray } 52381cb6ddcSMark Murray 52481cb6ddcSMark Murray /* 52581cb6ddcSMark Murray * Given a buffer returned by tgetent(), this routine will turn 5269a01d32bSJeroen Ruigrok van der Werven * the pipe separated list of names in the buffer into an array 52781cb6ddcSMark Murray * of pointers to null terminated names. We toss out any bad, 52881cb6ddcSMark Murray * duplicate, or verbose names (names with spaces). 52981cb6ddcSMark Murray */ 53081cb6ddcSMark Murray 5318fa113e5SMark Murray static const char *name_unknown = "UNKNOWN"; 5328fa113e5SMark Murray static const char *unknown[] = { NULL, NULL }; 53381cb6ddcSMark Murray 5348fa113e5SMark Murray static const char ** 5358fa113e5SMark Murray mklist(char *buf, char *name) 53681cb6ddcSMark Murray { 5378fa113e5SMark Murray int n; 5388fa113e5SMark Murray char c, *cp, **argvp, *cp2, **argv, **avt; 53981cb6ddcSMark Murray 54081cb6ddcSMark Murray if (name) { 54121f083c0SMark Murray if (strlen(name) > 40) { 54281cb6ddcSMark Murray name = 0; 54381cb6ddcSMark Murray unknown[0] = name_unknown; 54481cb6ddcSMark Murray } else { 54581cb6ddcSMark Murray unknown[0] = name; 54681cb6ddcSMark Murray upcase(name); 54781cb6ddcSMark Murray } 54881cb6ddcSMark Murray } else 54981cb6ddcSMark Murray unknown[0] = name_unknown; 55081cb6ddcSMark Murray /* 55181cb6ddcSMark Murray * Count up the number of names. 55281cb6ddcSMark Murray */ 55381cb6ddcSMark Murray for (n = 1, cp = buf; *cp && *cp != ':'; cp++) { 55481cb6ddcSMark Murray if (*cp == '|') 55581cb6ddcSMark Murray n++; 55681cb6ddcSMark Murray } 55781cb6ddcSMark Murray /* 55881cb6ddcSMark Murray * Allocate an array to put the name pointers into 55981cb6ddcSMark Murray */ 56081cb6ddcSMark Murray argv = (char **)malloc((n+3)*sizeof(char *)); 56181cb6ddcSMark Murray if (argv == 0) 56281cb6ddcSMark Murray return(unknown); 56381cb6ddcSMark Murray 56481cb6ddcSMark Murray /* 56581cb6ddcSMark Murray * Fill up the array of pointers to names. 56681cb6ddcSMark Murray */ 56781cb6ddcSMark Murray *argv = 0; 56881cb6ddcSMark Murray argvp = argv+1; 56981cb6ddcSMark Murray n = 0; 57081cb6ddcSMark Murray for (cp = cp2 = buf; (c = *cp); cp++) { 57181cb6ddcSMark Murray if (c == '|' || c == ':') { 57281cb6ddcSMark Murray *cp++ = '\0'; 57381cb6ddcSMark Murray /* 57481cb6ddcSMark Murray * Skip entries that have spaces or are over 40 57581cb6ddcSMark Murray * characters long. If this is our environment 57681cb6ddcSMark Murray * name, then put it up front. Otherwise, as 57781cb6ddcSMark Murray * long as this is not a duplicate name (case 57881cb6ddcSMark Murray * insensitive) add it to the list. 57981cb6ddcSMark Murray */ 58081cb6ddcSMark Murray if (n || (cp - cp2 > 41)) 58181cb6ddcSMark Murray ; 58281cb6ddcSMark Murray else if (name && (strncasecmp(name, cp2, cp-cp2) == 0)) 58381cb6ddcSMark Murray *argv = cp2; 58481cb6ddcSMark Murray else if (is_unique(cp2, argv+1, argvp)) 58581cb6ddcSMark Murray *argvp++ = cp2; 58681cb6ddcSMark Murray if (c == ':') 58781cb6ddcSMark Murray break; 58881cb6ddcSMark Murray /* 58981cb6ddcSMark Murray * Skip multiple delimiters. Reset cp2 to 59081cb6ddcSMark Murray * the beginning of the next name. Reset n, 59181cb6ddcSMark Murray * the flag for names with spaces. 59281cb6ddcSMark Murray */ 59381cb6ddcSMark Murray while ((c = *cp) == '|') 59481cb6ddcSMark Murray cp++; 59581cb6ddcSMark Murray cp2 = cp; 59681cb6ddcSMark Murray n = 0; 59781cb6ddcSMark Murray } 59881cb6ddcSMark Murray /* 59981cb6ddcSMark Murray * Skip entries with spaces or non-ascii values. 60081cb6ddcSMark Murray * Convert lower case letters to upper case. 60181cb6ddcSMark Murray */ 60281cb6ddcSMark Murray if ((c == ' ') || !isascii(c)) 60381cb6ddcSMark Murray n = 1; 60481cb6ddcSMark Murray else if (islower(c)) 60581cb6ddcSMark Murray *cp = toupper(c); 60681cb6ddcSMark Murray } 60781cb6ddcSMark Murray 60881cb6ddcSMark Murray /* 60981cb6ddcSMark Murray * Check for an old V6 2 character name. If the second 61081cb6ddcSMark Murray * name points to the beginning of the buffer, and is 61181cb6ddcSMark Murray * only 2 characters long, move it to the end of the array. 61281cb6ddcSMark Murray */ 61381cb6ddcSMark Murray if ((argv[1] == buf) && (strlen(argv[1]) == 2)) { 61481cb6ddcSMark Murray --argvp; 61581cb6ddcSMark Murray for (avt = &argv[1]; avt < argvp; avt++) 61681cb6ddcSMark Murray *avt = *(avt+1); 61781cb6ddcSMark Murray *argvp++ = buf; 61881cb6ddcSMark Murray } 61981cb6ddcSMark Murray 62081cb6ddcSMark Murray /* 62181cb6ddcSMark Murray * Duplicate last name, for TTYPE option, and null 62281cb6ddcSMark Murray * terminate the array. If we didn't find a match on 62381cb6ddcSMark Murray * our terminal name, put that name at the beginning. 62481cb6ddcSMark Murray */ 62581cb6ddcSMark Murray cp = *(argvp-1); 62681cb6ddcSMark Murray *argvp++ = cp; 62781cb6ddcSMark Murray *argvp = 0; 62881cb6ddcSMark Murray 62981cb6ddcSMark Murray if (*argv == 0) { 63081cb6ddcSMark Murray if (name) 63181cb6ddcSMark Murray *argv = name; 63281cb6ddcSMark Murray else { 63381cb6ddcSMark Murray --argvp; 63481cb6ddcSMark Murray for (avt = argv; avt < argvp; avt++) 63581cb6ddcSMark Murray *avt = *(avt+1); 63681cb6ddcSMark Murray } 63781cb6ddcSMark Murray } 63881cb6ddcSMark Murray if (*argv) 6398fa113e5SMark Murray return((const char **)argv); 64081cb6ddcSMark Murray else 64181cb6ddcSMark Murray return(unknown); 64281cb6ddcSMark Murray } 64381cb6ddcSMark Murray 6448fa113e5SMark Murray static int 6458fa113e5SMark Murray is_unique(char *name, char **as, char **ae) 64681cb6ddcSMark Murray { 6478fa113e5SMark Murray char **ap; 6488fa113e5SMark Murray int n; 64981cb6ddcSMark Murray 65081cb6ddcSMark Murray n = strlen(name) + 1; 65181cb6ddcSMark Murray for (ap = as; ap < ae; ap++) 65281cb6ddcSMark Murray if (strncasecmp(*ap, name, n) == 0) 65381cb6ddcSMark Murray return(0); 65481cb6ddcSMark Murray return (1); 65581cb6ddcSMark Murray } 65681cb6ddcSMark Murray 65781cb6ddcSMark Murray #ifdef TERMCAP 65881cb6ddcSMark Murray char termbuf[1024]; 65981cb6ddcSMark Murray 66081cb6ddcSMark Murray /*ARGSUSED*/ 6618fa113e5SMark Murray static int 6628fa113e5SMark Murray setupterm(char *tname, int fd, int *errp) 66381cb6ddcSMark Murray { 66481cb6ddcSMark Murray if (tgetent(termbuf, tname) == 1) { 66581cb6ddcSMark Murray termbuf[1023] = '\0'; 66681cb6ddcSMark Murray if (errp) 66781cb6ddcSMark Murray *errp = 1; 66881cb6ddcSMark Murray return(0); 66981cb6ddcSMark Murray } 67081cb6ddcSMark Murray if (errp) 67181cb6ddcSMark Murray *errp = 0; 67281cb6ddcSMark Murray return(-1); 67381cb6ddcSMark Murray } 67481cb6ddcSMark Murray #else 67581cb6ddcSMark Murray #define termbuf ttytype 67681cb6ddcSMark Murray extern char ttytype[]; 67781cb6ddcSMark Murray #endif 67881cb6ddcSMark Murray 67981cb6ddcSMark Murray int resettermname = 1; 68081cb6ddcSMark Murray 6818fa113e5SMark Murray static const char * 6828fa113e5SMark Murray gettermname(void) 68381cb6ddcSMark Murray { 68481cb6ddcSMark Murray char *tname; 6858fa113e5SMark Murray static const char **tnamep = 0; 6868fa113e5SMark Murray static const char **next; 68781cb6ddcSMark Murray int err; 68881cb6ddcSMark Murray 68981cb6ddcSMark Murray if (resettermname) { 69081cb6ddcSMark Murray resettermname = 0; 69181cb6ddcSMark Murray if (tnamep && tnamep != unknown) 69281cb6ddcSMark Murray free(tnamep); 6938fa113e5SMark Murray if ((tname = env_getvalue("TERM")) && 69481cb6ddcSMark Murray (setupterm(tname, 1, &err) == 0)) { 69581cb6ddcSMark Murray tnamep = mklist(termbuf, tname); 69681cb6ddcSMark Murray } else { 69721f083c0SMark Murray if (tname && (strlen(tname) <= 40)) { 69881cb6ddcSMark Murray unknown[0] = tname; 69981cb6ddcSMark Murray upcase(tname); 70081cb6ddcSMark Murray } else 70181cb6ddcSMark Murray unknown[0] = name_unknown; 70281cb6ddcSMark Murray tnamep = unknown; 70381cb6ddcSMark Murray } 70481cb6ddcSMark Murray next = tnamep; 70581cb6ddcSMark Murray } 70681cb6ddcSMark Murray if (*next == 0) 70781cb6ddcSMark Murray next = tnamep; 70881cb6ddcSMark Murray return(*next++); 70981cb6ddcSMark Murray } 71081cb6ddcSMark Murray /* 71181cb6ddcSMark Murray * suboption() 71281cb6ddcSMark Murray * 71381cb6ddcSMark Murray * Look at the sub-option buffer, and try to be helpful to the other 71481cb6ddcSMark Murray * side. 71581cb6ddcSMark Murray * 71681cb6ddcSMark Murray * Currently we recognize: 71781cb6ddcSMark Murray * 71881cb6ddcSMark Murray * Terminal type, send request. 71981cb6ddcSMark Murray * Terminal speed (send request). 72081cb6ddcSMark Murray * Local flow control (is request). 72181cb6ddcSMark Murray * Linemode 72281cb6ddcSMark Murray */ 72381cb6ddcSMark Murray 72481cb6ddcSMark Murray static void 7258fa113e5SMark Murray suboption(void) 72681cb6ddcSMark Murray { 72781cb6ddcSMark Murray unsigned char subchar; 72881cb6ddcSMark Murray 72981cb6ddcSMark Murray printsub('<', subbuffer, SB_LEN()+2); 73081cb6ddcSMark Murray switch (subchar = SB_GET()) { 73181cb6ddcSMark Murray case TELOPT_TTYPE: 73281cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_TTYPE)) 73381cb6ddcSMark Murray return; 73481cb6ddcSMark Murray if (SB_EOF() || SB_GET() != TELQUAL_SEND) { 73581cb6ddcSMark Murray return; 73681cb6ddcSMark Murray } else { 7378fa113e5SMark Murray const char *name; 73881cb6ddcSMark Murray unsigned char temp[50]; 73981cb6ddcSMark Murray int len; 74081cb6ddcSMark Murray 74181cb6ddcSMark Murray name = gettermname(); 74281cb6ddcSMark Murray len = strlen(name) + 4 + 2; 74381cb6ddcSMark Murray if (len < NETROOM()) { 7448fa113e5SMark Murray sprintf(temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE, 74581cb6ddcSMark Murray TELQUAL_IS, name, IAC, SE); 74681cb6ddcSMark Murray ring_supply_data(&netoring, temp, len); 74781cb6ddcSMark Murray printsub('>', &temp[2], len-2); 74881cb6ddcSMark Murray } else { 74981cb6ddcSMark Murray ExitString("No room in buffer for terminal type.\n", 1); 75081cb6ddcSMark Murray /*NOTREACHED*/ 75181cb6ddcSMark Murray } 75281cb6ddcSMark Murray } 75381cb6ddcSMark Murray break; 75481cb6ddcSMark Murray case TELOPT_TSPEED: 75581cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_TSPEED)) 75681cb6ddcSMark Murray return; 75781cb6ddcSMark Murray if (SB_EOF()) 75881cb6ddcSMark Murray return; 75981cb6ddcSMark Murray if (SB_GET() == TELQUAL_SEND) { 76081cb6ddcSMark Murray long ospeed, ispeed; 76181cb6ddcSMark Murray unsigned char temp[50]; 76281cb6ddcSMark Murray int len; 76381cb6ddcSMark Murray 76481cb6ddcSMark Murray TerminalSpeeds(&ispeed, &ospeed); 76581cb6ddcSMark Murray 76604c426ccSMark Murray sprintf((char *)temp, "%c%c%c%c%ld,%ld%c%c", IAC, SB, TELOPT_TSPEED, 76781cb6ddcSMark Murray TELQUAL_IS, ospeed, ispeed, IAC, SE); 76881cb6ddcSMark Murray len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */ 76981cb6ddcSMark Murray 77081cb6ddcSMark Murray if (len < NETROOM()) { 77181cb6ddcSMark Murray ring_supply_data(&netoring, temp, len); 77281cb6ddcSMark Murray printsub('>', temp+2, len - 2); 77381cb6ddcSMark Murray } 77481cb6ddcSMark Murray /*@*/ else printf("lm_will: not enough room in buffer\n"); 77581cb6ddcSMark Murray } 77681cb6ddcSMark Murray break; 77781cb6ddcSMark Murray case TELOPT_LFLOW: 77881cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_LFLOW)) 77981cb6ddcSMark Murray return; 78081cb6ddcSMark Murray if (SB_EOF()) 78181cb6ddcSMark Murray return; 78281cb6ddcSMark Murray switch(SB_GET()) { 78381cb6ddcSMark Murray case LFLOW_RESTART_ANY: 78481cb6ddcSMark Murray restartany = 1; 78581cb6ddcSMark Murray break; 78681cb6ddcSMark Murray case LFLOW_RESTART_XON: 78781cb6ddcSMark Murray restartany = 0; 78881cb6ddcSMark Murray break; 78981cb6ddcSMark Murray case LFLOW_ON: 79081cb6ddcSMark Murray localflow = 1; 79181cb6ddcSMark Murray break; 79281cb6ddcSMark Murray case LFLOW_OFF: 79381cb6ddcSMark Murray localflow = 0; 79481cb6ddcSMark Murray break; 79581cb6ddcSMark Murray default: 79681cb6ddcSMark Murray return; 79781cb6ddcSMark Murray } 79881cb6ddcSMark Murray setcommandmode(); 79981cb6ddcSMark Murray setconnmode(0); 80081cb6ddcSMark Murray break; 80181cb6ddcSMark Murray 80281cb6ddcSMark Murray case TELOPT_LINEMODE: 80381cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_LINEMODE)) 80481cb6ddcSMark Murray return; 80581cb6ddcSMark Murray if (SB_EOF()) 80681cb6ddcSMark Murray return; 80781cb6ddcSMark Murray switch (SB_GET()) { 80881cb6ddcSMark Murray case WILL: 80981cb6ddcSMark Murray lm_will(subpointer, SB_LEN()); 81081cb6ddcSMark Murray break; 81181cb6ddcSMark Murray case WONT: 81281cb6ddcSMark Murray lm_wont(subpointer, SB_LEN()); 81381cb6ddcSMark Murray break; 81481cb6ddcSMark Murray case DO: 81581cb6ddcSMark Murray lm_do(subpointer, SB_LEN()); 81681cb6ddcSMark Murray break; 81781cb6ddcSMark Murray case DONT: 81881cb6ddcSMark Murray lm_dont(subpointer, SB_LEN()); 81981cb6ddcSMark Murray break; 82081cb6ddcSMark Murray case LM_SLC: 82181cb6ddcSMark Murray slc(subpointer, SB_LEN()); 82281cb6ddcSMark Murray break; 82381cb6ddcSMark Murray case LM_MODE: 82481cb6ddcSMark Murray lm_mode(subpointer, SB_LEN(), 0); 82581cb6ddcSMark Murray break; 82681cb6ddcSMark Murray default: 82781cb6ddcSMark Murray break; 82881cb6ddcSMark Murray } 82981cb6ddcSMark Murray break; 83081cb6ddcSMark Murray 83181cb6ddcSMark Murray #ifdef OLD_ENVIRON 83281cb6ddcSMark Murray case TELOPT_OLD_ENVIRON: 83381cb6ddcSMark Murray #endif 83481cb6ddcSMark Murray case TELOPT_NEW_ENVIRON: 83581cb6ddcSMark Murray if (SB_EOF()) 83681cb6ddcSMark Murray return; 83781cb6ddcSMark Murray switch(SB_PEEK()) { 83881cb6ddcSMark Murray case TELQUAL_IS: 83981cb6ddcSMark Murray case TELQUAL_INFO: 84081cb6ddcSMark Murray if (my_want_state_is_dont(subchar)) 84181cb6ddcSMark Murray return; 84281cb6ddcSMark Murray break; 84381cb6ddcSMark Murray case TELQUAL_SEND: 84481cb6ddcSMark Murray if (my_want_state_is_wont(subchar)) { 84581cb6ddcSMark Murray return; 84681cb6ddcSMark Murray } 84781cb6ddcSMark Murray break; 84881cb6ddcSMark Murray default: 84981cb6ddcSMark Murray return; 85081cb6ddcSMark Murray } 85181cb6ddcSMark Murray env_opt(subpointer, SB_LEN()); 85281cb6ddcSMark Murray break; 85381cb6ddcSMark Murray 85481cb6ddcSMark Murray case TELOPT_XDISPLOC: 85581cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_XDISPLOC)) 85681cb6ddcSMark Murray return; 85781cb6ddcSMark Murray if (SB_EOF()) 85881cb6ddcSMark Murray return; 85981cb6ddcSMark Murray if (SB_GET() == TELQUAL_SEND) { 86081cb6ddcSMark Murray unsigned char temp[50], *dp; 86181cb6ddcSMark Murray int len; 86281cb6ddcSMark Murray 8638fa113e5SMark Murray if ((dp = env_getvalue("DISPLAY")) == NULL || 864579c78c7SKris Kennaway strlen(dp) > sizeof(temp) - 7) { 86581cb6ddcSMark Murray /* 86681cb6ddcSMark Murray * Something happened, we no longer have a DISPLAY 867579c78c7SKris Kennaway * variable. Or it is too long. So, turn off the option. 86881cb6ddcSMark Murray */ 86981cb6ddcSMark Murray send_wont(TELOPT_XDISPLOC, 1); 87081cb6ddcSMark Murray break; 87181cb6ddcSMark Murray } 8728fa113e5SMark Murray snprintf(temp, sizeof(temp), "%c%c%c%c%s%c%c", IAC, SB, 873579c78c7SKris Kennaway TELOPT_XDISPLOC, TELQUAL_IS, dp, IAC, SE); 87481cb6ddcSMark Murray len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */ 87581cb6ddcSMark Murray 87681cb6ddcSMark Murray if (len < NETROOM()) { 87781cb6ddcSMark Murray ring_supply_data(&netoring, temp, len); 87881cb6ddcSMark Murray printsub('>', temp+2, len - 2); 87981cb6ddcSMark Murray } 88081cb6ddcSMark Murray /*@*/ else printf("lm_will: not enough room in buffer\n"); 88181cb6ddcSMark Murray } 88281cb6ddcSMark Murray break; 88381cb6ddcSMark Murray 8848fa113e5SMark Murray #ifdef AUTHENTICATION 88581cb6ddcSMark Murray case TELOPT_AUTHENTICATION: { 88681cb6ddcSMark Murray if (!autologin) 88781cb6ddcSMark Murray break; 88881cb6ddcSMark Murray if (SB_EOF()) 88981cb6ddcSMark Murray return; 89081cb6ddcSMark Murray switch(SB_GET()) { 89181cb6ddcSMark Murray case TELQUAL_IS: 89281cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_AUTHENTICATION)) 89381cb6ddcSMark Murray return; 89481cb6ddcSMark Murray auth_is(subpointer, SB_LEN()); 89581cb6ddcSMark Murray break; 89681cb6ddcSMark Murray case TELQUAL_SEND: 89781cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_AUTHENTICATION)) 89881cb6ddcSMark Murray return; 89981cb6ddcSMark Murray auth_send(subpointer, SB_LEN()); 90081cb6ddcSMark Murray break; 90181cb6ddcSMark Murray case TELQUAL_REPLY: 90281cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_AUTHENTICATION)) 90381cb6ddcSMark Murray return; 90481cb6ddcSMark Murray auth_reply(subpointer, SB_LEN()); 90581cb6ddcSMark Murray break; 90681cb6ddcSMark Murray case TELQUAL_NAME: 90781cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_AUTHENTICATION)) 90881cb6ddcSMark Murray return; 90981cb6ddcSMark Murray auth_name(subpointer, SB_LEN()); 91081cb6ddcSMark Murray break; 91181cb6ddcSMark Murray } 91281cb6ddcSMark Murray } 91381cb6ddcSMark Murray break; 91481cb6ddcSMark Murray #endif 91581cb6ddcSMark Murray #ifdef ENCRYPTION 91681cb6ddcSMark Murray case TELOPT_ENCRYPT: 91781cb6ddcSMark Murray if (SB_EOF()) 91881cb6ddcSMark Murray return; 91981cb6ddcSMark Murray switch(SB_GET()) { 92081cb6ddcSMark Murray case ENCRYPT_START: 92181cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 92281cb6ddcSMark Murray return; 92381cb6ddcSMark Murray encrypt_start(subpointer, SB_LEN()); 92481cb6ddcSMark Murray break; 92581cb6ddcSMark Murray case ENCRYPT_END: 92681cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 92781cb6ddcSMark Murray return; 92881cb6ddcSMark Murray encrypt_end(); 92981cb6ddcSMark Murray break; 93081cb6ddcSMark Murray case ENCRYPT_SUPPORT: 93181cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 93281cb6ddcSMark Murray return; 93381cb6ddcSMark Murray encrypt_support(subpointer, SB_LEN()); 93481cb6ddcSMark Murray break; 93581cb6ddcSMark Murray case ENCRYPT_REQSTART: 93681cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 93781cb6ddcSMark Murray return; 93881cb6ddcSMark Murray encrypt_request_start(subpointer, SB_LEN()); 93981cb6ddcSMark Murray break; 94081cb6ddcSMark Murray case ENCRYPT_REQEND: 94181cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 94281cb6ddcSMark Murray return; 94381cb6ddcSMark Murray /* 94481cb6ddcSMark Murray * We can always send an REQEND so that we cannot 94581cb6ddcSMark Murray * get stuck encrypting. We should only get this 94681cb6ddcSMark Murray * if we have been able to get in the correct mode 94781cb6ddcSMark Murray * anyhow. 94881cb6ddcSMark Murray */ 94981cb6ddcSMark Murray encrypt_request_end(); 95081cb6ddcSMark Murray break; 95181cb6ddcSMark Murray case ENCRYPT_IS: 95281cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 95381cb6ddcSMark Murray return; 95481cb6ddcSMark Murray encrypt_is(subpointer, SB_LEN()); 95581cb6ddcSMark Murray break; 95681cb6ddcSMark Murray case ENCRYPT_REPLY: 95781cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 95881cb6ddcSMark Murray return; 95981cb6ddcSMark Murray encrypt_reply(subpointer, SB_LEN()); 96081cb6ddcSMark Murray break; 96181cb6ddcSMark Murray case ENCRYPT_ENC_KEYID: 96281cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 96381cb6ddcSMark Murray return; 96481cb6ddcSMark Murray encrypt_enc_keyid(subpointer, SB_LEN()); 96581cb6ddcSMark Murray break; 96681cb6ddcSMark Murray case ENCRYPT_DEC_KEYID: 96781cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 96881cb6ddcSMark Murray return; 96981cb6ddcSMark Murray encrypt_dec_keyid(subpointer, SB_LEN()); 97081cb6ddcSMark Murray break; 97181cb6ddcSMark Murray default: 97281cb6ddcSMark Murray break; 97381cb6ddcSMark Murray } 97481cb6ddcSMark Murray break; 97581cb6ddcSMark Murray #endif /* ENCRYPTION */ 97681cb6ddcSMark Murray default: 97781cb6ddcSMark Murray break; 97881cb6ddcSMark Murray } 97981cb6ddcSMark Murray } 98081cb6ddcSMark Murray 98181cb6ddcSMark Murray static unsigned char str_lm[] = { IAC, SB, TELOPT_LINEMODE, 0, 0, IAC, SE }; 98281cb6ddcSMark Murray 98381cb6ddcSMark Murray void 9848fa113e5SMark Murray lm_will(unsigned char *cmd, int len) 98581cb6ddcSMark Murray { 98681cb6ddcSMark Murray if (len < 1) { 98781cb6ddcSMark Murray /*@*/ printf("lm_will: no command!!!\n"); /* Should not happen... */ 98881cb6ddcSMark Murray return; 98981cb6ddcSMark Murray } 99081cb6ddcSMark Murray switch(cmd[0]) { 99181cb6ddcSMark Murray case LM_FORWARDMASK: /* We shouldn't ever get this... */ 99281cb6ddcSMark Murray default: 99381cb6ddcSMark Murray str_lm[3] = DONT; 99481cb6ddcSMark Murray str_lm[4] = cmd[0]; 9958fa113e5SMark Murray if (NETROOM() > (int)sizeof(str_lm)) { 99681cb6ddcSMark Murray ring_supply_data(&netoring, str_lm, sizeof(str_lm)); 99781cb6ddcSMark Murray printsub('>', &str_lm[2], sizeof(str_lm)-2); 99881cb6ddcSMark Murray } 99981cb6ddcSMark Murray /*@*/ else printf("lm_will: not enough room in buffer\n"); 100081cb6ddcSMark Murray break; 100181cb6ddcSMark Murray } 100281cb6ddcSMark Murray } 100381cb6ddcSMark Murray 100481cb6ddcSMark Murray void 10058fa113e5SMark Murray lm_wont(unsigned char *cmd, int len) 100681cb6ddcSMark Murray { 100781cb6ddcSMark Murray if (len < 1) { 100881cb6ddcSMark Murray /*@*/ printf("lm_wont: no command!!!\n"); /* Should not happen... */ 100981cb6ddcSMark Murray return; 101081cb6ddcSMark Murray } 101181cb6ddcSMark Murray switch(cmd[0]) { 101281cb6ddcSMark Murray case LM_FORWARDMASK: /* We shouldn't ever get this... */ 101381cb6ddcSMark Murray default: 101481cb6ddcSMark Murray /* We are always DONT, so don't respond */ 101581cb6ddcSMark Murray return; 101681cb6ddcSMark Murray } 101781cb6ddcSMark Murray } 101881cb6ddcSMark Murray 101981cb6ddcSMark Murray void 10208fa113e5SMark Murray lm_do(unsigned char *cmd, int len) 102181cb6ddcSMark Murray { 102281cb6ddcSMark Murray if (len < 1) { 102381cb6ddcSMark Murray /*@*/ printf("lm_do: no command!!!\n"); /* Should not happen... */ 102481cb6ddcSMark Murray return; 102581cb6ddcSMark Murray } 102681cb6ddcSMark Murray switch(cmd[0]) { 102781cb6ddcSMark Murray case LM_FORWARDMASK: 102881cb6ddcSMark Murray default: 102981cb6ddcSMark Murray str_lm[3] = WONT; 103081cb6ddcSMark Murray str_lm[4] = cmd[0]; 10318fa113e5SMark Murray if (NETROOM() > (int)sizeof(str_lm)) { 103281cb6ddcSMark Murray ring_supply_data(&netoring, str_lm, sizeof(str_lm)); 103381cb6ddcSMark Murray printsub('>', &str_lm[2], sizeof(str_lm)-2); 103481cb6ddcSMark Murray } 103581cb6ddcSMark Murray /*@*/ else printf("lm_do: not enough room in buffer\n"); 103681cb6ddcSMark Murray break; 103781cb6ddcSMark Murray } 103881cb6ddcSMark Murray } 103981cb6ddcSMark Murray 104081cb6ddcSMark Murray void 10418fa113e5SMark Murray lm_dont(unsigned char *cmd, int len) 104281cb6ddcSMark Murray { 104381cb6ddcSMark Murray if (len < 1) { 104481cb6ddcSMark Murray /*@*/ printf("lm_dont: no command!!!\n"); /* Should not happen... */ 104581cb6ddcSMark Murray return; 104681cb6ddcSMark Murray } 104781cb6ddcSMark Murray switch(cmd[0]) { 104881cb6ddcSMark Murray case LM_FORWARDMASK: 104981cb6ddcSMark Murray default: 105081cb6ddcSMark Murray /* we are always WONT, so don't respond */ 105181cb6ddcSMark Murray break; 105281cb6ddcSMark Murray } 105381cb6ddcSMark Murray } 105481cb6ddcSMark Murray 105581cb6ddcSMark Murray static unsigned char str_lm_mode[] = { 105681cb6ddcSMark Murray IAC, SB, TELOPT_LINEMODE, LM_MODE, 0, IAC, SE 105781cb6ddcSMark Murray }; 105881cb6ddcSMark Murray 105981cb6ddcSMark Murray void 10608fa113e5SMark Murray lm_mode(unsigned char *cmd, int len, int init) 106181cb6ddcSMark Murray { 106281cb6ddcSMark Murray if (len != 1) 106381cb6ddcSMark Murray return; 106481cb6ddcSMark Murray if ((linemode&MODE_MASK&~MODE_ACK) == *cmd) 106581cb6ddcSMark Murray return; 106681cb6ddcSMark Murray if (*cmd&MODE_ACK) 106781cb6ddcSMark Murray return; 106881cb6ddcSMark Murray linemode = *cmd&(MODE_MASK&~MODE_ACK); 106981cb6ddcSMark Murray str_lm_mode[4] = linemode; 107081cb6ddcSMark Murray if (!init) 107181cb6ddcSMark Murray str_lm_mode[4] |= MODE_ACK; 10728fa113e5SMark Murray if (NETROOM() > (int)sizeof(str_lm_mode)) { 107381cb6ddcSMark Murray ring_supply_data(&netoring, str_lm_mode, sizeof(str_lm_mode)); 107481cb6ddcSMark Murray printsub('>', &str_lm_mode[2], sizeof(str_lm_mode)-2); 107581cb6ddcSMark Murray } 107681cb6ddcSMark Murray /*@*/ else printf("lm_mode: not enough room in buffer\n"); 107781cb6ddcSMark Murray setconnmode(0); /* set changed mode */ 107881cb6ddcSMark Murray } 107981cb6ddcSMark Murray 108081cb6ddcSMark Murray 108181cb6ddcSMark Murray 108281cb6ddcSMark Murray /* 108381cb6ddcSMark Murray * slc() 108481cb6ddcSMark Murray * Handle special character suboption of LINEMODE. 108581cb6ddcSMark Murray */ 108681cb6ddcSMark Murray 108781cb6ddcSMark Murray struct spc { 108881cb6ddcSMark Murray cc_t val; 108981cb6ddcSMark Murray cc_t *valp; 109081cb6ddcSMark Murray char flags; /* Current flags & level */ 109181cb6ddcSMark Murray char mylevel; /* Maximum level & flags */ 109281cb6ddcSMark Murray } spc_data[NSLC+1]; 109381cb6ddcSMark Murray 109481cb6ddcSMark Murray #define SLC_IMPORT 0 109581cb6ddcSMark Murray #define SLC_EXPORT 1 109681cb6ddcSMark Murray #define SLC_RVALUE 2 109781cb6ddcSMark Murray static int slc_mode = SLC_EXPORT; 109881cb6ddcSMark Murray 109981cb6ddcSMark Murray void 11008fa113e5SMark Murray slc_init(void) 110181cb6ddcSMark Murray { 11028fa113e5SMark Murray struct spc *spcp; 110381cb6ddcSMark Murray 110481cb6ddcSMark Murray localchars = 1; 110581cb6ddcSMark Murray for (spcp = spc_data; spcp < &spc_data[NSLC+1]; spcp++) { 110681cb6ddcSMark Murray spcp->val = 0; 110781cb6ddcSMark Murray spcp->valp = 0; 110881cb6ddcSMark Murray spcp->flags = spcp->mylevel = SLC_NOSUPPORT; 110981cb6ddcSMark Murray } 111081cb6ddcSMark Murray 111181cb6ddcSMark Murray #define initfunc(func, flags) { \ 111281cb6ddcSMark Murray spcp = &spc_data[func]; \ 111304c426ccSMark Murray if ((spcp->valp = tcval(func))) { \ 111481cb6ddcSMark Murray spcp->val = *spcp->valp; \ 111581cb6ddcSMark Murray spcp->mylevel = SLC_VARIABLE|flags; \ 111681cb6ddcSMark Murray } else { \ 111781cb6ddcSMark Murray spcp->val = 0; \ 111881cb6ddcSMark Murray spcp->mylevel = SLC_DEFAULT; \ 111981cb6ddcSMark Murray } \ 112081cb6ddcSMark Murray } 112181cb6ddcSMark Murray 112281cb6ddcSMark Murray initfunc(SLC_SYNCH, 0); 112381cb6ddcSMark Murray /* No BRK */ 112481cb6ddcSMark Murray initfunc(SLC_AO, 0); 112581cb6ddcSMark Murray initfunc(SLC_AYT, 0); 112681cb6ddcSMark Murray /* No EOR */ 112781cb6ddcSMark Murray initfunc(SLC_ABORT, SLC_FLUSHIN|SLC_FLUSHOUT); 112881cb6ddcSMark Murray initfunc(SLC_EOF, 0); 112981cb6ddcSMark Murray #ifndef SYSV_TERMIO 113081cb6ddcSMark Murray initfunc(SLC_SUSP, SLC_FLUSHIN); 113181cb6ddcSMark Murray #endif 113281cb6ddcSMark Murray initfunc(SLC_EC, 0); 113381cb6ddcSMark Murray initfunc(SLC_EL, 0); 113481cb6ddcSMark Murray #ifndef SYSV_TERMIO 113581cb6ddcSMark Murray initfunc(SLC_EW, 0); 113681cb6ddcSMark Murray initfunc(SLC_RP, 0); 113781cb6ddcSMark Murray initfunc(SLC_LNEXT, 0); 113881cb6ddcSMark Murray #endif 113981cb6ddcSMark Murray initfunc(SLC_XON, 0); 114081cb6ddcSMark Murray initfunc(SLC_XOFF, 0); 114181cb6ddcSMark Murray #ifdef SYSV_TERMIO 114281cb6ddcSMark Murray spc_data[SLC_XON].mylevel = SLC_CANTCHANGE; 114381cb6ddcSMark Murray spc_data[SLC_XOFF].mylevel = SLC_CANTCHANGE; 114481cb6ddcSMark Murray #endif 114581cb6ddcSMark Murray initfunc(SLC_FORW1, 0); 114681cb6ddcSMark Murray #ifdef USE_TERMIO 114781cb6ddcSMark Murray initfunc(SLC_FORW2, 0); 114881cb6ddcSMark Murray /* No FORW2 */ 114981cb6ddcSMark Murray #endif 115081cb6ddcSMark Murray 115181cb6ddcSMark Murray initfunc(SLC_IP, SLC_FLUSHIN|SLC_FLUSHOUT); 115281cb6ddcSMark Murray #undef initfunc 115381cb6ddcSMark Murray 115481cb6ddcSMark Murray if (slc_mode == SLC_EXPORT) 115581cb6ddcSMark Murray slc_export(); 115681cb6ddcSMark Murray else 115781cb6ddcSMark Murray slc_import(1); 115881cb6ddcSMark Murray 115981cb6ddcSMark Murray } 116081cb6ddcSMark Murray 116181cb6ddcSMark Murray void 11628fa113e5SMark Murray slcstate(void) 116381cb6ddcSMark Murray { 116481cb6ddcSMark Murray printf("Special characters are %s values\n", 116581cb6ddcSMark Murray slc_mode == SLC_IMPORT ? "remote default" : 116681cb6ddcSMark Murray slc_mode == SLC_EXPORT ? "local" : 116781cb6ddcSMark Murray "remote"); 116881cb6ddcSMark Murray } 116981cb6ddcSMark Murray 117081cb6ddcSMark Murray void 11718fa113e5SMark Murray slc_mode_export(void) 117281cb6ddcSMark Murray { 117381cb6ddcSMark Murray slc_mode = SLC_EXPORT; 117481cb6ddcSMark Murray if (my_state_is_will(TELOPT_LINEMODE)) 117581cb6ddcSMark Murray slc_export(); 117681cb6ddcSMark Murray } 117781cb6ddcSMark Murray 117881cb6ddcSMark Murray void 11798fa113e5SMark Murray slc_mode_import(int def) 118081cb6ddcSMark Murray { 118181cb6ddcSMark Murray slc_mode = def ? SLC_IMPORT : SLC_RVALUE; 118281cb6ddcSMark Murray if (my_state_is_will(TELOPT_LINEMODE)) 118381cb6ddcSMark Murray slc_import(def); 118481cb6ddcSMark Murray } 118581cb6ddcSMark Murray 118681cb6ddcSMark Murray unsigned char slc_import_val[] = { 118781cb6ddcSMark Murray IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_VARIABLE, 0, IAC, SE 118881cb6ddcSMark Murray }; 118981cb6ddcSMark Murray unsigned char slc_import_def[] = { 119081cb6ddcSMark Murray IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_DEFAULT, 0, IAC, SE 119181cb6ddcSMark Murray }; 119281cb6ddcSMark Murray 119381cb6ddcSMark Murray void 11948fa113e5SMark Murray slc_import(int def) 119581cb6ddcSMark Murray { 11968fa113e5SMark Murray if (NETROOM() > (int)sizeof(slc_import_val)) { 119781cb6ddcSMark Murray if (def) { 119881cb6ddcSMark Murray ring_supply_data(&netoring, slc_import_def, sizeof(slc_import_def)); 119981cb6ddcSMark Murray printsub('>', &slc_import_def[2], sizeof(slc_import_def)-2); 120081cb6ddcSMark Murray } else { 120181cb6ddcSMark Murray ring_supply_data(&netoring, slc_import_val, sizeof(slc_import_val)); 120281cb6ddcSMark Murray printsub('>', &slc_import_val[2], sizeof(slc_import_val)-2); 120381cb6ddcSMark Murray } 120481cb6ddcSMark Murray } 120581cb6ddcSMark Murray /*@*/ else printf("slc_import: not enough room\n"); 120681cb6ddcSMark Murray } 120781cb6ddcSMark Murray 120881cb6ddcSMark Murray void 12098fa113e5SMark Murray slc_export(void) 121081cb6ddcSMark Murray { 12118fa113e5SMark Murray struct spc *spcp; 121281cb6ddcSMark Murray 121381cb6ddcSMark Murray TerminalDefaultChars(); 121481cb6ddcSMark Murray 121581cb6ddcSMark Murray slc_start_reply(); 121681cb6ddcSMark Murray for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { 121781cb6ddcSMark Murray if (spcp->mylevel != SLC_NOSUPPORT) { 121881cb6ddcSMark Murray if (spcp->val == (cc_t)(_POSIX_VDISABLE)) 121981cb6ddcSMark Murray spcp->flags = SLC_NOSUPPORT; 122081cb6ddcSMark Murray else 122181cb6ddcSMark Murray spcp->flags = spcp->mylevel; 122281cb6ddcSMark Murray if (spcp->valp) 122381cb6ddcSMark Murray spcp->val = *spcp->valp; 122481cb6ddcSMark Murray slc_add_reply(spcp - spc_data, spcp->flags, spcp->val); 122581cb6ddcSMark Murray } 122681cb6ddcSMark Murray } 122781cb6ddcSMark Murray slc_end_reply(); 122881cb6ddcSMark Murray (void)slc_update(); 122981cb6ddcSMark Murray setconnmode(1); /* Make sure the character values are set */ 123081cb6ddcSMark Murray } 123181cb6ddcSMark Murray 123281cb6ddcSMark Murray void 12338fa113e5SMark Murray slc(unsigned char *cp, int len) 123481cb6ddcSMark Murray { 12358fa113e5SMark Murray struct spc *spcp; 12368fa113e5SMark Murray int func,level; 123781cb6ddcSMark Murray 123881cb6ddcSMark Murray slc_start_reply(); 123981cb6ddcSMark Murray 124081cb6ddcSMark Murray for (; len >= 3; len -=3, cp +=3) { 124181cb6ddcSMark Murray 124281cb6ddcSMark Murray func = cp[SLC_FUNC]; 124381cb6ddcSMark Murray 124481cb6ddcSMark Murray if (func == 0) { 124581cb6ddcSMark Murray /* 124681cb6ddcSMark Murray * Client side: always ignore 0 function. 124781cb6ddcSMark Murray */ 124881cb6ddcSMark Murray continue; 124981cb6ddcSMark Murray } 125081cb6ddcSMark Murray if (func > NSLC) { 125181cb6ddcSMark Murray if ((cp[SLC_FLAGS] & SLC_LEVELBITS) != SLC_NOSUPPORT) 125281cb6ddcSMark Murray slc_add_reply(func, SLC_NOSUPPORT, 0); 125381cb6ddcSMark Murray continue; 125481cb6ddcSMark Murray } 125581cb6ddcSMark Murray 125681cb6ddcSMark Murray spcp = &spc_data[func]; 125781cb6ddcSMark Murray 125881cb6ddcSMark Murray level = cp[SLC_FLAGS]&(SLC_LEVELBITS|SLC_ACK); 125981cb6ddcSMark Murray 126081cb6ddcSMark Murray if ((cp[SLC_VALUE] == (unsigned char)spcp->val) && 126181cb6ddcSMark Murray ((level&SLC_LEVELBITS) == (spcp->flags&SLC_LEVELBITS))) { 126281cb6ddcSMark Murray continue; 126381cb6ddcSMark Murray } 126481cb6ddcSMark Murray 126581cb6ddcSMark Murray if (level == (SLC_DEFAULT|SLC_ACK)) { 126681cb6ddcSMark Murray /* 126781cb6ddcSMark Murray * This is an error condition, the SLC_ACK 126881cb6ddcSMark Murray * bit should never be set for the SLC_DEFAULT 126981cb6ddcSMark Murray * level. Our best guess to recover is to 127081cb6ddcSMark Murray * ignore the SLC_ACK bit. 127181cb6ddcSMark Murray */ 127281cb6ddcSMark Murray cp[SLC_FLAGS] &= ~SLC_ACK; 127381cb6ddcSMark Murray } 127481cb6ddcSMark Murray 127581cb6ddcSMark Murray if (level == ((spcp->flags&SLC_LEVELBITS)|SLC_ACK)) { 127681cb6ddcSMark Murray spcp->val = (cc_t)cp[SLC_VALUE]; 127781cb6ddcSMark Murray spcp->flags = cp[SLC_FLAGS]; /* include SLC_ACK */ 127881cb6ddcSMark Murray continue; 127981cb6ddcSMark Murray } 128081cb6ddcSMark Murray 128181cb6ddcSMark Murray level &= ~SLC_ACK; 128281cb6ddcSMark Murray 128381cb6ddcSMark Murray if (level <= (spcp->mylevel&SLC_LEVELBITS)) { 128481cb6ddcSMark Murray spcp->flags = cp[SLC_FLAGS]|SLC_ACK; 128581cb6ddcSMark Murray spcp->val = (cc_t)cp[SLC_VALUE]; 128681cb6ddcSMark Murray } 128781cb6ddcSMark Murray if (level == SLC_DEFAULT) { 128881cb6ddcSMark Murray if ((spcp->mylevel&SLC_LEVELBITS) != SLC_DEFAULT) 128981cb6ddcSMark Murray spcp->flags = spcp->mylevel; 129081cb6ddcSMark Murray else 129181cb6ddcSMark Murray spcp->flags = SLC_NOSUPPORT; 129281cb6ddcSMark Murray } 129381cb6ddcSMark Murray slc_add_reply(func, spcp->flags, spcp->val); 129481cb6ddcSMark Murray } 129581cb6ddcSMark Murray slc_end_reply(); 129681cb6ddcSMark Murray if (slc_update()) 129781cb6ddcSMark Murray setconnmode(1); /* set the new character values */ 129881cb6ddcSMark Murray } 129981cb6ddcSMark Murray 130081cb6ddcSMark Murray void 13018fa113e5SMark Murray slc_check(void) 130281cb6ddcSMark Murray { 13038fa113e5SMark Murray struct spc *spcp; 130481cb6ddcSMark Murray 130581cb6ddcSMark Murray slc_start_reply(); 130681cb6ddcSMark Murray for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { 130781cb6ddcSMark Murray if (spcp->valp && spcp->val != *spcp->valp) { 130881cb6ddcSMark Murray spcp->val = *spcp->valp; 130981cb6ddcSMark Murray if (spcp->val == (cc_t)(_POSIX_VDISABLE)) 131081cb6ddcSMark Murray spcp->flags = SLC_NOSUPPORT; 131181cb6ddcSMark Murray else 131281cb6ddcSMark Murray spcp->flags = spcp->mylevel; 131381cb6ddcSMark Murray slc_add_reply(spcp - spc_data, spcp->flags, spcp->val); 131481cb6ddcSMark Murray } 131581cb6ddcSMark Murray } 131681cb6ddcSMark Murray slc_end_reply(); 131781cb6ddcSMark Murray setconnmode(1); 131881cb6ddcSMark Murray } 131981cb6ddcSMark Murray 132081cb6ddcSMark Murray unsigned char slc_reply[128]; 132181cb6ddcSMark Murray unsigned char *slc_replyp; 132281cb6ddcSMark Murray 132381cb6ddcSMark Murray void 13248fa113e5SMark Murray slc_start_reply(void) 132581cb6ddcSMark Murray { 132681cb6ddcSMark Murray slc_replyp = slc_reply; 132781cb6ddcSMark Murray *slc_replyp++ = IAC; 132881cb6ddcSMark Murray *slc_replyp++ = SB; 132981cb6ddcSMark Murray *slc_replyp++ = TELOPT_LINEMODE; 133081cb6ddcSMark Murray *slc_replyp++ = LM_SLC; 133181cb6ddcSMark Murray } 133281cb6ddcSMark Murray 133381cb6ddcSMark Murray void 13348fa113e5SMark Murray slc_add_reply(unsigned char func, unsigned char flags, cc_t value) 133581cb6ddcSMark Murray { 133681cb6ddcSMark Murray if ((*slc_replyp++ = func) == IAC) 133781cb6ddcSMark Murray *slc_replyp++ = IAC; 133881cb6ddcSMark Murray if ((*slc_replyp++ = flags) == IAC) 133981cb6ddcSMark Murray *slc_replyp++ = IAC; 134081cb6ddcSMark Murray if ((*slc_replyp++ = (unsigned char)value) == IAC) 134181cb6ddcSMark Murray *slc_replyp++ = IAC; 134281cb6ddcSMark Murray } 134381cb6ddcSMark Murray 134481cb6ddcSMark Murray void 13458fa113e5SMark Murray slc_end_reply(void) 134681cb6ddcSMark Murray { 13478fa113e5SMark Murray int len; 134881cb6ddcSMark Murray 134981cb6ddcSMark Murray *slc_replyp++ = IAC; 135081cb6ddcSMark Murray *slc_replyp++ = SE; 135181cb6ddcSMark Murray len = slc_replyp - slc_reply; 135281cb6ddcSMark Murray if (len <= 6) 135381cb6ddcSMark Murray return; 135481cb6ddcSMark Murray if (NETROOM() > len) { 135581cb6ddcSMark Murray ring_supply_data(&netoring, slc_reply, slc_replyp - slc_reply); 135681cb6ddcSMark Murray printsub('>', &slc_reply[2], slc_replyp - slc_reply - 2); 135781cb6ddcSMark Murray } 135881cb6ddcSMark Murray /*@*/else printf("slc_end_reply: not enough room\n"); 135981cb6ddcSMark Murray } 136081cb6ddcSMark Murray 136181cb6ddcSMark Murray int 13628fa113e5SMark Murray slc_update(void) 136381cb6ddcSMark Murray { 13648fa113e5SMark Murray struct spc *spcp; 136581cb6ddcSMark Murray int need_update = 0; 136681cb6ddcSMark Murray 136781cb6ddcSMark Murray for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { 136881cb6ddcSMark Murray if (!(spcp->flags&SLC_ACK)) 136981cb6ddcSMark Murray continue; 137081cb6ddcSMark Murray spcp->flags &= ~SLC_ACK; 137181cb6ddcSMark Murray if (spcp->valp && (*spcp->valp != spcp->val)) { 137281cb6ddcSMark Murray *spcp->valp = spcp->val; 137381cb6ddcSMark Murray need_update = 1; 137481cb6ddcSMark Murray } 137581cb6ddcSMark Murray } 137681cb6ddcSMark Murray return(need_update); 137781cb6ddcSMark Murray } 137881cb6ddcSMark Murray 137981cb6ddcSMark Murray #ifdef OLD_ENVIRON 138081cb6ddcSMark Murray # ifdef ENV_HACK 138181cb6ddcSMark Murray /* 138281cb6ddcSMark Murray * Earlier version of telnet/telnetd from the BSD code had 138381cb6ddcSMark Murray * the definitions of VALUE and VAR reversed. To ensure 138481cb6ddcSMark Murray * maximum interoperability, we assume that the server is 138581cb6ddcSMark Murray * an older BSD server, until proven otherwise. The newer 138681cb6ddcSMark Murray * BSD servers should be able to handle either definition, 138781cb6ddcSMark Murray * so it is better to use the wrong values if we don't 138881cb6ddcSMark Murray * know what type of server it is. 138981cb6ddcSMark Murray */ 139081cb6ddcSMark Murray int env_auto = 1; 139181cb6ddcSMark Murray int old_env_var = OLD_ENV_VAR; 139281cb6ddcSMark Murray int old_env_value = OLD_ENV_VALUE; 139381cb6ddcSMark Murray # else 139481cb6ddcSMark Murray # define old_env_var OLD_ENV_VAR 139581cb6ddcSMark Murray # define old_env_value OLD_ENV_VALUE 139681cb6ddcSMark Murray # endif 139781cb6ddcSMark Murray #endif 139881cb6ddcSMark Murray 139981cb6ddcSMark Murray void 14008fa113e5SMark Murray env_opt(unsigned char *buf, int len) 140181cb6ddcSMark Murray { 14028fa113e5SMark Murray unsigned char *ep = 0, *epc = 0; 14038fa113e5SMark Murray int i; 140481cb6ddcSMark Murray 140581cb6ddcSMark Murray switch(buf[0]&0xff) { 140681cb6ddcSMark Murray case TELQUAL_SEND: 140781cb6ddcSMark Murray env_opt_start(); 140881cb6ddcSMark Murray if (len == 1) { 140981cb6ddcSMark Murray env_opt_add(NULL); 141081cb6ddcSMark Murray } else for (i = 1; i < len; i++) { 141181cb6ddcSMark Murray switch (buf[i]&0xff) { 141281cb6ddcSMark Murray #ifdef OLD_ENVIRON 141381cb6ddcSMark Murray case OLD_ENV_VAR: 141481cb6ddcSMark Murray # ifdef ENV_HACK 141581cb6ddcSMark Murray if (telopt_environ == TELOPT_OLD_ENVIRON 141681cb6ddcSMark Murray && env_auto) { 141781cb6ddcSMark Murray /* Server has the same definitions */ 141881cb6ddcSMark Murray old_env_var = OLD_ENV_VAR; 141981cb6ddcSMark Murray old_env_value = OLD_ENV_VALUE; 142081cb6ddcSMark Murray } 142181cb6ddcSMark Murray /* FALLTHROUGH */ 142281cb6ddcSMark Murray # endif 142381cb6ddcSMark Murray case OLD_ENV_VALUE: 142481cb6ddcSMark Murray /* 142581cb6ddcSMark Murray * Although OLD_ENV_VALUE is not legal, we will 142681cb6ddcSMark Murray * still recognize it, just in case it is an 142781cb6ddcSMark Murray * old server that has VAR & VALUE mixed up... 142881cb6ddcSMark Murray */ 142981cb6ddcSMark Murray /* FALLTHROUGH */ 143081cb6ddcSMark Murray #else 143181cb6ddcSMark Murray case NEW_ENV_VAR: 143281cb6ddcSMark Murray #endif 143381cb6ddcSMark Murray case ENV_USERVAR: 143481cb6ddcSMark Murray if (ep) { 143581cb6ddcSMark Murray *epc = 0; 143681cb6ddcSMark Murray env_opt_add(ep); 143781cb6ddcSMark Murray } 143881cb6ddcSMark Murray ep = epc = &buf[i+1]; 143981cb6ddcSMark Murray break; 144081cb6ddcSMark Murray case ENV_ESC: 144181cb6ddcSMark Murray i++; 144281cb6ddcSMark Murray /*FALLTHROUGH*/ 144381cb6ddcSMark Murray default: 144481cb6ddcSMark Murray if (epc) 144581cb6ddcSMark Murray *epc++ = buf[i]; 144681cb6ddcSMark Murray break; 144781cb6ddcSMark Murray } 144881cb6ddcSMark Murray } 144981cb6ddcSMark Murray if (ep) { 145081cb6ddcSMark Murray *epc = 0; 145181cb6ddcSMark Murray env_opt_add(ep); 145281cb6ddcSMark Murray } 145381cb6ddcSMark Murray env_opt_end(1); 145481cb6ddcSMark Murray break; 145581cb6ddcSMark Murray 145681cb6ddcSMark Murray case TELQUAL_IS: 145781cb6ddcSMark Murray case TELQUAL_INFO: 145881cb6ddcSMark Murray /* Ignore for now. We shouldn't get it anyway. */ 145981cb6ddcSMark Murray break; 146081cb6ddcSMark Murray 146181cb6ddcSMark Murray default: 146281cb6ddcSMark Murray break; 146381cb6ddcSMark Murray } 146481cb6ddcSMark Murray } 146581cb6ddcSMark Murray 146681cb6ddcSMark Murray #define OPT_REPLY_SIZE 256 146781cb6ddcSMark Murray unsigned char *opt_reply; 146881cb6ddcSMark Murray unsigned char *opt_replyp; 146981cb6ddcSMark Murray unsigned char *opt_replyend; 147081cb6ddcSMark Murray 147181cb6ddcSMark Murray void 14728fa113e5SMark Murray env_opt_start(void) 147381cb6ddcSMark Murray { 147481cb6ddcSMark Murray if (opt_reply) 147581cb6ddcSMark Murray opt_reply = (unsigned char *)realloc(opt_reply, OPT_REPLY_SIZE); 147681cb6ddcSMark Murray else 147781cb6ddcSMark Murray opt_reply = (unsigned char *)malloc(OPT_REPLY_SIZE); 147881cb6ddcSMark Murray if (opt_reply == NULL) { 147981cb6ddcSMark Murray /*@*/ printf("env_opt_start: malloc()/realloc() failed!!!\n"); 148081cb6ddcSMark Murray opt_reply = opt_replyp = opt_replyend = NULL; 148181cb6ddcSMark Murray return; 148281cb6ddcSMark Murray } 148381cb6ddcSMark Murray opt_replyp = opt_reply; 148481cb6ddcSMark Murray opt_replyend = opt_reply + OPT_REPLY_SIZE; 148581cb6ddcSMark Murray *opt_replyp++ = IAC; 148681cb6ddcSMark Murray *opt_replyp++ = SB; 148781cb6ddcSMark Murray *opt_replyp++ = telopt_environ; 148881cb6ddcSMark Murray *opt_replyp++ = TELQUAL_IS; 148981cb6ddcSMark Murray } 149081cb6ddcSMark Murray 149181cb6ddcSMark Murray void 14928fa113e5SMark Murray env_opt_start_info(void) 149381cb6ddcSMark Murray { 149481cb6ddcSMark Murray env_opt_start(); 149581cb6ddcSMark Murray if (opt_replyp) 149681cb6ddcSMark Murray opt_replyp[-1] = TELQUAL_INFO; 149781cb6ddcSMark Murray } 149881cb6ddcSMark Murray 149981cb6ddcSMark Murray void 15008fa113e5SMark Murray env_opt_add(unsigned char *ep) 150181cb6ddcSMark Murray { 15028fa113e5SMark Murray unsigned char *vp, c; 150381cb6ddcSMark Murray 150481cb6ddcSMark Murray if (opt_reply == NULL) /*XXX*/ 150581cb6ddcSMark Murray return; /*XXX*/ 150681cb6ddcSMark Murray 150781cb6ddcSMark Murray if (ep == NULL || *ep == '\0') { 150881cb6ddcSMark Murray /* Send user defined variables first. */ 150981cb6ddcSMark Murray env_default(1, 0); 151004c426ccSMark Murray while ((ep = env_default(0, 0))) 151181cb6ddcSMark Murray env_opt_add(ep); 151281cb6ddcSMark Murray 151381cb6ddcSMark Murray /* Now add the list of well know variables. */ 151481cb6ddcSMark Murray env_default(1, 1); 151504c426ccSMark Murray while ((ep = env_default(0, 1))) 151681cb6ddcSMark Murray env_opt_add(ep); 151781cb6ddcSMark Murray return; 151881cb6ddcSMark Murray } 151981cb6ddcSMark Murray vp = env_getvalue(ep); 152081cb6ddcSMark Murray if (opt_replyp + (vp ? strlen((char *)vp) : 0) + 152181cb6ddcSMark Murray strlen((char *)ep) + 6 > opt_replyend) 152281cb6ddcSMark Murray { 15238fa113e5SMark Murray int len; 152481cb6ddcSMark Murray opt_replyend += OPT_REPLY_SIZE; 152581cb6ddcSMark Murray len = opt_replyend - opt_reply; 152681cb6ddcSMark Murray opt_reply = (unsigned char *)realloc(opt_reply, len); 152781cb6ddcSMark Murray if (opt_reply == NULL) { 152881cb6ddcSMark Murray /*@*/ printf("env_opt_add: realloc() failed!!!\n"); 152981cb6ddcSMark Murray opt_reply = opt_replyp = opt_replyend = NULL; 153081cb6ddcSMark Murray return; 153181cb6ddcSMark Murray } 153281cb6ddcSMark Murray opt_replyp = opt_reply + len - (opt_replyend - opt_replyp); 153381cb6ddcSMark Murray opt_replyend = opt_reply + len; 153481cb6ddcSMark Murray } 153581cb6ddcSMark Murray if (opt_welldefined(ep)) 153681cb6ddcSMark Murray #ifdef OLD_ENVIRON 153781cb6ddcSMark Murray if (telopt_environ == TELOPT_OLD_ENVIRON) 153881cb6ddcSMark Murray *opt_replyp++ = old_env_var; 153981cb6ddcSMark Murray else 154081cb6ddcSMark Murray #endif 154181cb6ddcSMark Murray *opt_replyp++ = NEW_ENV_VAR; 154281cb6ddcSMark Murray else 154381cb6ddcSMark Murray *opt_replyp++ = ENV_USERVAR; 154481cb6ddcSMark Murray for (;;) { 154504c426ccSMark Murray while ((c = *ep++)) { 154681cb6ddcSMark Murray switch(c&0xff) { 154781cb6ddcSMark Murray case IAC: 154881cb6ddcSMark Murray *opt_replyp++ = IAC; 154981cb6ddcSMark Murray break; 155081cb6ddcSMark Murray case NEW_ENV_VAR: 155181cb6ddcSMark Murray case NEW_ENV_VALUE: 155281cb6ddcSMark Murray case ENV_ESC: 155381cb6ddcSMark Murray case ENV_USERVAR: 155481cb6ddcSMark Murray *opt_replyp++ = ENV_ESC; 155581cb6ddcSMark Murray break; 155681cb6ddcSMark Murray } 155781cb6ddcSMark Murray *opt_replyp++ = c; 155881cb6ddcSMark Murray } 155904c426ccSMark Murray if ((ep = vp)) { 156081cb6ddcSMark Murray #ifdef OLD_ENVIRON 156181cb6ddcSMark Murray if (telopt_environ == TELOPT_OLD_ENVIRON) 156281cb6ddcSMark Murray *opt_replyp++ = old_env_value; 156381cb6ddcSMark Murray else 156481cb6ddcSMark Murray #endif 156581cb6ddcSMark Murray *opt_replyp++ = NEW_ENV_VALUE; 156681cb6ddcSMark Murray vp = NULL; 156781cb6ddcSMark Murray } else 156881cb6ddcSMark Murray break; 156981cb6ddcSMark Murray } 157081cb6ddcSMark Murray } 157181cb6ddcSMark Murray 157281cb6ddcSMark Murray int 15738fa113e5SMark Murray opt_welldefined(const char *ep) 157481cb6ddcSMark Murray { 157581cb6ddcSMark Murray if ((strcmp(ep, "USER") == 0) || 157681cb6ddcSMark Murray (strcmp(ep, "DISPLAY") == 0) || 157781cb6ddcSMark Murray (strcmp(ep, "PRINTER") == 0) || 157881cb6ddcSMark Murray (strcmp(ep, "SYSTEMTYPE") == 0) || 157981cb6ddcSMark Murray (strcmp(ep, "JOB") == 0) || 158081cb6ddcSMark Murray (strcmp(ep, "ACCT") == 0)) 158181cb6ddcSMark Murray return(1); 158281cb6ddcSMark Murray return(0); 158381cb6ddcSMark Murray } 15848fa113e5SMark Murray 158581cb6ddcSMark Murray void 15868fa113e5SMark Murray env_opt_end(int emptyok) 158781cb6ddcSMark Murray { 15888fa113e5SMark Murray int len; 158981cb6ddcSMark Murray 159081cb6ddcSMark Murray len = opt_replyp - opt_reply + 2; 159181cb6ddcSMark Murray if (emptyok || len > 6) { 159281cb6ddcSMark Murray *opt_replyp++ = IAC; 159381cb6ddcSMark Murray *opt_replyp++ = SE; 159481cb6ddcSMark Murray if (NETROOM() > len) { 159581cb6ddcSMark Murray ring_supply_data(&netoring, opt_reply, len); 159681cb6ddcSMark Murray printsub('>', &opt_reply[2], len - 2); 159781cb6ddcSMark Murray } 159881cb6ddcSMark Murray /*@*/ else printf("slc_end_reply: not enough room\n"); 159981cb6ddcSMark Murray } 160081cb6ddcSMark Murray if (opt_reply) { 160181cb6ddcSMark Murray free(opt_reply); 160281cb6ddcSMark Murray opt_reply = opt_replyp = opt_replyend = NULL; 160381cb6ddcSMark Murray } 160481cb6ddcSMark Murray } 160581cb6ddcSMark Murray 160681cb6ddcSMark Murray 160781cb6ddcSMark Murray 160881cb6ddcSMark Murray int 16098fa113e5SMark Murray telrcv(void) 161081cb6ddcSMark Murray { 16118fa113e5SMark Murray int c; 16128fa113e5SMark Murray int scc; 16138fa113e5SMark Murray unsigned char *sbp; 161481cb6ddcSMark Murray int count; 161581cb6ddcSMark Murray int returnValue = 0; 161681cb6ddcSMark Murray 161781cb6ddcSMark Murray scc = 0; 161881cb6ddcSMark Murray count = 0; 161981cb6ddcSMark Murray while (TTYROOM() > 2) { 162081cb6ddcSMark Murray if (scc == 0) { 162181cb6ddcSMark Murray if (count) { 162281cb6ddcSMark Murray ring_consumed(&netiring, count); 162381cb6ddcSMark Murray returnValue = 1; 162481cb6ddcSMark Murray count = 0; 162581cb6ddcSMark Murray } 162681cb6ddcSMark Murray sbp = netiring.consume; 162781cb6ddcSMark Murray scc = ring_full_consecutive(&netiring); 162881cb6ddcSMark Murray if (scc == 0) { 162981cb6ddcSMark Murray /* No more data coming in */ 163081cb6ddcSMark Murray break; 163181cb6ddcSMark Murray } 163281cb6ddcSMark Murray } 163381cb6ddcSMark Murray 163481cb6ddcSMark Murray c = *sbp++ & 0xff, scc--; count++; 163581cb6ddcSMark Murray #ifdef ENCRYPTION 163681cb6ddcSMark Murray if (decrypt_input) 163781cb6ddcSMark Murray c = (*decrypt_input)(c); 163881cb6ddcSMark Murray #endif /* ENCRYPTION */ 163981cb6ddcSMark Murray 164081cb6ddcSMark Murray switch (telrcv_state) { 164181cb6ddcSMark Murray 164281cb6ddcSMark Murray case TS_CR: 164381cb6ddcSMark Murray telrcv_state = TS_DATA; 164481cb6ddcSMark Murray if (c == '\0') { 164581cb6ddcSMark Murray break; /* Ignore \0 after CR */ 164681cb6ddcSMark Murray } 164781cb6ddcSMark Murray else if ((c == '\n') && my_want_state_is_dont(TELOPT_ECHO) && !crmod) { 164881cb6ddcSMark Murray TTYADD(c); 164981cb6ddcSMark Murray break; 165081cb6ddcSMark Murray } 165186953b02SMark Murray /* FALLTHROUGH */ 165281cb6ddcSMark Murray 165381cb6ddcSMark Murray case TS_DATA: 165481cb6ddcSMark Murray if (c == IAC) { 165581cb6ddcSMark Murray telrcv_state = TS_IAC; 165681cb6ddcSMark Murray break; 165781cb6ddcSMark Murray } 165881cb6ddcSMark Murray /* 165981cb6ddcSMark Murray * The 'crmod' hack (see following) is needed 166081cb6ddcSMark Murray * since we can't * set CRMOD on output only. 166181cb6ddcSMark Murray * Machines like MULTICS like to send \r without 166281cb6ddcSMark Murray * \n; since we must turn off CRMOD to get proper 166381cb6ddcSMark Murray * input, the mapping is done here (sigh). 166481cb6ddcSMark Murray */ 166581cb6ddcSMark Murray if ((c == '\r') && my_want_state_is_dont(TELOPT_BINARY)) { 166681cb6ddcSMark Murray if (scc > 0) { 166781cb6ddcSMark Murray c = *sbp&0xff; 166881cb6ddcSMark Murray #ifdef ENCRYPTION 166981cb6ddcSMark Murray if (decrypt_input) 167081cb6ddcSMark Murray c = (*decrypt_input)(c); 167181cb6ddcSMark Murray #endif /* ENCRYPTION */ 167281cb6ddcSMark Murray if (c == 0) { 167381cb6ddcSMark Murray sbp++, scc--; count++; 167481cb6ddcSMark Murray /* a "true" CR */ 167581cb6ddcSMark Murray TTYADD('\r'); 167681cb6ddcSMark Murray } else if (my_want_state_is_dont(TELOPT_ECHO) && 167781cb6ddcSMark Murray (c == '\n')) { 167881cb6ddcSMark Murray sbp++, scc--; count++; 167981cb6ddcSMark Murray TTYADD('\n'); 168081cb6ddcSMark Murray } else { 168181cb6ddcSMark Murray #ifdef ENCRYPTION 168281cb6ddcSMark Murray if (decrypt_input) 168381cb6ddcSMark Murray (*decrypt_input)(-1); 168481cb6ddcSMark Murray #endif /* ENCRYPTION */ 168581cb6ddcSMark Murray 168681cb6ddcSMark Murray TTYADD('\r'); 168781cb6ddcSMark Murray if (crmod) { 168881cb6ddcSMark Murray TTYADD('\n'); 168981cb6ddcSMark Murray } 169081cb6ddcSMark Murray } 169181cb6ddcSMark Murray } else { 169281cb6ddcSMark Murray telrcv_state = TS_CR; 169381cb6ddcSMark Murray TTYADD('\r'); 169481cb6ddcSMark Murray if (crmod) { 169581cb6ddcSMark Murray TTYADD('\n'); 169681cb6ddcSMark Murray } 169781cb6ddcSMark Murray } 169881cb6ddcSMark Murray } else { 169981cb6ddcSMark Murray TTYADD(c); 170081cb6ddcSMark Murray } 170181cb6ddcSMark Murray continue; 170281cb6ddcSMark Murray 170381cb6ddcSMark Murray case TS_IAC: 170481cb6ddcSMark Murray process_iac: 170581cb6ddcSMark Murray switch (c) { 170681cb6ddcSMark Murray 170781cb6ddcSMark Murray case WILL: 170881cb6ddcSMark Murray telrcv_state = TS_WILL; 170981cb6ddcSMark Murray continue; 171081cb6ddcSMark Murray 171181cb6ddcSMark Murray case WONT: 171281cb6ddcSMark Murray telrcv_state = TS_WONT; 171381cb6ddcSMark Murray continue; 171481cb6ddcSMark Murray 171581cb6ddcSMark Murray case DO: 171681cb6ddcSMark Murray telrcv_state = TS_DO; 171781cb6ddcSMark Murray continue; 171881cb6ddcSMark Murray 171981cb6ddcSMark Murray case DONT: 172081cb6ddcSMark Murray telrcv_state = TS_DONT; 172181cb6ddcSMark Murray continue; 172281cb6ddcSMark Murray 172381cb6ddcSMark Murray case DM: 172481cb6ddcSMark Murray /* 172581cb6ddcSMark Murray * We may have missed an urgent notification, 172681cb6ddcSMark Murray * so make sure we flush whatever is in the 172781cb6ddcSMark Murray * buffer currently. 172881cb6ddcSMark Murray */ 172981cb6ddcSMark Murray printoption("RCVD", IAC, DM); 173081cb6ddcSMark Murray SYNCHing = 1; 173181cb6ddcSMark Murray (void) ttyflush(1); 173281cb6ddcSMark Murray SYNCHing = stilloob(); 173381cb6ddcSMark Murray settimer(gotDM); 173481cb6ddcSMark Murray break; 173581cb6ddcSMark Murray 173681cb6ddcSMark Murray case SB: 173781cb6ddcSMark Murray SB_CLEAR(); 173881cb6ddcSMark Murray telrcv_state = TS_SB; 173981cb6ddcSMark Murray continue; 174081cb6ddcSMark Murray 174181cb6ddcSMark Murray case IAC: 174281cb6ddcSMark Murray TTYADD(IAC); 174381cb6ddcSMark Murray break; 174481cb6ddcSMark Murray 174581cb6ddcSMark Murray case NOP: 174681cb6ddcSMark Murray case GA: 174781cb6ddcSMark Murray default: 174881cb6ddcSMark Murray printoption("RCVD", IAC, c); 174981cb6ddcSMark Murray break; 175081cb6ddcSMark Murray } 175181cb6ddcSMark Murray telrcv_state = TS_DATA; 175281cb6ddcSMark Murray continue; 175381cb6ddcSMark Murray 175481cb6ddcSMark Murray case TS_WILL: 175581cb6ddcSMark Murray printoption("RCVD", WILL, c); 175681cb6ddcSMark Murray willoption(c); 175781cb6ddcSMark Murray telrcv_state = TS_DATA; 175881cb6ddcSMark Murray continue; 175981cb6ddcSMark Murray 176081cb6ddcSMark Murray case TS_WONT: 176181cb6ddcSMark Murray printoption("RCVD", WONT, c); 176281cb6ddcSMark Murray wontoption(c); 176381cb6ddcSMark Murray telrcv_state = TS_DATA; 176481cb6ddcSMark Murray continue; 176581cb6ddcSMark Murray 176681cb6ddcSMark Murray case TS_DO: 176781cb6ddcSMark Murray printoption("RCVD", DO, c); 176881cb6ddcSMark Murray dooption(c); 176981cb6ddcSMark Murray if (c == TELOPT_NAWS) { 177081cb6ddcSMark Murray sendnaws(); 177181cb6ddcSMark Murray } else if (c == TELOPT_LFLOW) { 177281cb6ddcSMark Murray localflow = 1; 177381cb6ddcSMark Murray setcommandmode(); 177481cb6ddcSMark Murray setconnmode(0); 177581cb6ddcSMark Murray } 177681cb6ddcSMark Murray telrcv_state = TS_DATA; 177781cb6ddcSMark Murray continue; 177881cb6ddcSMark Murray 177981cb6ddcSMark Murray case TS_DONT: 178081cb6ddcSMark Murray printoption("RCVD", DONT, c); 178181cb6ddcSMark Murray dontoption(c); 178281cb6ddcSMark Murray flushline = 1; 178381cb6ddcSMark Murray setconnmode(0); /* set new tty mode (maybe) */ 178481cb6ddcSMark Murray telrcv_state = TS_DATA; 178581cb6ddcSMark Murray continue; 178681cb6ddcSMark Murray 178781cb6ddcSMark Murray case TS_SB: 178881cb6ddcSMark Murray if (c == IAC) { 178981cb6ddcSMark Murray telrcv_state = TS_SE; 179081cb6ddcSMark Murray } else { 179181cb6ddcSMark Murray SB_ACCUM(c); 179281cb6ddcSMark Murray } 179381cb6ddcSMark Murray continue; 179481cb6ddcSMark Murray 179581cb6ddcSMark Murray case TS_SE: 179681cb6ddcSMark Murray if (c != SE) { 179781cb6ddcSMark Murray if (c != IAC) { 179881cb6ddcSMark Murray /* 179981cb6ddcSMark Murray * This is an error. We only expect to get 180081cb6ddcSMark Murray * "IAC IAC" or "IAC SE". Several things may 180181cb6ddcSMark Murray * have happend. An IAC was not doubled, the 180281cb6ddcSMark Murray * IAC SE was left off, or another option got 180381cb6ddcSMark Murray * inserted into the suboption are all possibilities. 180481cb6ddcSMark Murray * If we assume that the IAC was not doubled, 180581cb6ddcSMark Murray * and really the IAC SE was left off, we could 180681cb6ddcSMark Murray * get into an infinate loop here. So, instead, 180781cb6ddcSMark Murray * we terminate the suboption, and process the 180881cb6ddcSMark Murray * partial suboption if we can. 180981cb6ddcSMark Murray */ 181081cb6ddcSMark Murray SB_ACCUM(IAC); 181181cb6ddcSMark Murray SB_ACCUM(c); 181281cb6ddcSMark Murray subpointer -= 2; 181381cb6ddcSMark Murray SB_TERM(); 181481cb6ddcSMark Murray 181581cb6ddcSMark Murray printoption("In SUBOPTION processing, RCVD", IAC, c); 181681cb6ddcSMark Murray suboption(); /* handle sub-option */ 181781cb6ddcSMark Murray telrcv_state = TS_IAC; 181881cb6ddcSMark Murray goto process_iac; 181981cb6ddcSMark Murray } 182081cb6ddcSMark Murray SB_ACCUM(c); 182181cb6ddcSMark Murray telrcv_state = TS_SB; 182281cb6ddcSMark Murray } else { 182381cb6ddcSMark Murray SB_ACCUM(IAC); 182481cb6ddcSMark Murray SB_ACCUM(SE); 182581cb6ddcSMark Murray subpointer -= 2; 182681cb6ddcSMark Murray SB_TERM(); 182781cb6ddcSMark Murray suboption(); /* handle sub-option */ 182881cb6ddcSMark Murray telrcv_state = TS_DATA; 182981cb6ddcSMark Murray } 183081cb6ddcSMark Murray } 183181cb6ddcSMark Murray } 183281cb6ddcSMark Murray if (count) 183381cb6ddcSMark Murray ring_consumed(&netiring, count); 183481cb6ddcSMark Murray return returnValue||count; 183581cb6ddcSMark Murray } 183681cb6ddcSMark Murray 183781cb6ddcSMark Murray static int bol = 1, local = 0; 183881cb6ddcSMark Murray 183981cb6ddcSMark Murray int 18408fa113e5SMark Murray rlogin_susp(void) 184181cb6ddcSMark Murray { 184281cb6ddcSMark Murray if (local) { 184381cb6ddcSMark Murray local = 0; 184481cb6ddcSMark Murray bol = 1; 184581cb6ddcSMark Murray command(0, "z\n", 2); 184681cb6ddcSMark Murray return(1); 184781cb6ddcSMark Murray } 184881cb6ddcSMark Murray return(0); 184981cb6ddcSMark Murray } 185081cb6ddcSMark Murray 185181cb6ddcSMark Murray static int 18528fa113e5SMark Murray telsnd(void) 185381cb6ddcSMark Murray { 185481cb6ddcSMark Murray int tcc; 185581cb6ddcSMark Murray int count; 185681cb6ddcSMark Murray int returnValue = 0; 185781cb6ddcSMark Murray unsigned char *tbp; 185881cb6ddcSMark Murray 185981cb6ddcSMark Murray tcc = 0; 186081cb6ddcSMark Murray count = 0; 186181cb6ddcSMark Murray while (NETROOM() > 2) { 18628fa113e5SMark Murray int sc; 18638fa113e5SMark Murray int c; 186481cb6ddcSMark Murray 186581cb6ddcSMark Murray if (tcc == 0) { 186681cb6ddcSMark Murray if (count) { 186781cb6ddcSMark Murray ring_consumed(&ttyiring, count); 186881cb6ddcSMark Murray returnValue = 1; 186981cb6ddcSMark Murray count = 0; 187081cb6ddcSMark Murray } 187181cb6ddcSMark Murray tbp = ttyiring.consume; 187281cb6ddcSMark Murray tcc = ring_full_consecutive(&ttyiring); 187381cb6ddcSMark Murray if (tcc == 0) { 187481cb6ddcSMark Murray break; 187581cb6ddcSMark Murray } 187681cb6ddcSMark Murray } 187781cb6ddcSMark Murray c = *tbp++ & 0xff, sc = strip(c), tcc--; count++; 187881cb6ddcSMark Murray if (rlogin != _POSIX_VDISABLE) { 187981cb6ddcSMark Murray if (bol) { 188081cb6ddcSMark Murray bol = 0; 188181cb6ddcSMark Murray if (sc == rlogin) { 188281cb6ddcSMark Murray local = 1; 188381cb6ddcSMark Murray continue; 188481cb6ddcSMark Murray } 188581cb6ddcSMark Murray } else if (local) { 188681cb6ddcSMark Murray local = 0; 188781cb6ddcSMark Murray if (sc == '.' || c == termEofChar) { 188881cb6ddcSMark Murray bol = 1; 188981cb6ddcSMark Murray command(0, "close\n", 6); 189081cb6ddcSMark Murray continue; 189181cb6ddcSMark Murray } 189281cb6ddcSMark Murray if (sc == termSuspChar) { 189381cb6ddcSMark Murray bol = 1; 189481cb6ddcSMark Murray command(0, "z\n", 2); 189581cb6ddcSMark Murray continue; 189681cb6ddcSMark Murray } 189781cb6ddcSMark Murray if (sc == escape) { 18988fa113e5SMark Murray command(0, tbp, tcc); 189981cb6ddcSMark Murray bol = 1; 190081cb6ddcSMark Murray count += tcc; 190181cb6ddcSMark Murray tcc = 0; 190281cb6ddcSMark Murray flushline = 1; 190381cb6ddcSMark Murray break; 190481cb6ddcSMark Murray } 190581cb6ddcSMark Murray if (sc != rlogin) { 190681cb6ddcSMark Murray ++tcc; 190781cb6ddcSMark Murray --tbp; 190881cb6ddcSMark Murray --count; 190981cb6ddcSMark Murray c = sc = rlogin; 191081cb6ddcSMark Murray } 191181cb6ddcSMark Murray } 191281cb6ddcSMark Murray if ((sc == '\n') || (sc == '\r')) 191381cb6ddcSMark Murray bol = 1; 191442cf8219SRuslan Ermilov } else if (escape != _POSIX_VDISABLE && sc == escape) { 191581cb6ddcSMark Murray /* 191681cb6ddcSMark Murray * Double escape is a pass through of a single escape character. 191781cb6ddcSMark Murray */ 191881cb6ddcSMark Murray if (tcc && strip(*tbp) == escape) { 191981cb6ddcSMark Murray tbp++; 192081cb6ddcSMark Murray tcc--; 192181cb6ddcSMark Murray count++; 192281cb6ddcSMark Murray bol = 0; 192381cb6ddcSMark Murray } else { 192481cb6ddcSMark Murray command(0, (char *)tbp, tcc); 192581cb6ddcSMark Murray bol = 1; 192681cb6ddcSMark Murray count += tcc; 192781cb6ddcSMark Murray tcc = 0; 192881cb6ddcSMark Murray flushline = 1; 192981cb6ddcSMark Murray break; 193081cb6ddcSMark Murray } 193181cb6ddcSMark Murray } else 193281cb6ddcSMark Murray bol = 0; 193381cb6ddcSMark Murray #ifdef KLUDGELINEMODE 193481cb6ddcSMark Murray if (kludgelinemode && (globalmode&MODE_EDIT) && (sc == echoc)) { 193581cb6ddcSMark Murray if (tcc > 0 && strip(*tbp) == echoc) { 193681cb6ddcSMark Murray tcc--; tbp++; count++; 193781cb6ddcSMark Murray } else { 193881cb6ddcSMark Murray dontlecho = !dontlecho; 193981cb6ddcSMark Murray settimer(echotoggle); 194081cb6ddcSMark Murray setconnmode(0); 194181cb6ddcSMark Murray flushline = 1; 194281cb6ddcSMark Murray break; 194381cb6ddcSMark Murray } 194481cb6ddcSMark Murray } 194581cb6ddcSMark Murray #endif 194681cb6ddcSMark Murray if (MODE_LOCAL_CHARS(globalmode)) { 194781cb6ddcSMark Murray if (TerminalSpecialChars(sc) == 0) { 194881cb6ddcSMark Murray bol = 1; 194981cb6ddcSMark Murray break; 195081cb6ddcSMark Murray } 195181cb6ddcSMark Murray } 195281cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_BINARY)) { 195381cb6ddcSMark Murray switch (c) { 195481cb6ddcSMark Murray case '\n': 195581cb6ddcSMark Murray /* 195681cb6ddcSMark Murray * If we are in CRMOD mode (\r ==> \n) 195781cb6ddcSMark Murray * on our local machine, then probably 195881cb6ddcSMark Murray * a newline (unix) is CRLF (TELNET). 195981cb6ddcSMark Murray */ 196081cb6ddcSMark Murray if (MODE_LOCAL_CHARS(globalmode)) { 196181cb6ddcSMark Murray NETADD('\r'); 196281cb6ddcSMark Murray } 196381cb6ddcSMark Murray NETADD('\n'); 196481cb6ddcSMark Murray bol = flushline = 1; 196581cb6ddcSMark Murray break; 196681cb6ddcSMark Murray case '\r': 196781cb6ddcSMark Murray if (!crlf) { 196881cb6ddcSMark Murray NET2ADD('\r', '\0'); 196981cb6ddcSMark Murray } else { 197081cb6ddcSMark Murray NET2ADD('\r', '\n'); 197181cb6ddcSMark Murray } 197281cb6ddcSMark Murray bol = flushline = 1; 197381cb6ddcSMark Murray break; 197481cb6ddcSMark Murray case IAC: 197581cb6ddcSMark Murray NET2ADD(IAC, IAC); 197681cb6ddcSMark Murray break; 197781cb6ddcSMark Murray default: 197881cb6ddcSMark Murray NETADD(c); 197981cb6ddcSMark Murray break; 198081cb6ddcSMark Murray } 198181cb6ddcSMark Murray } else if (c == IAC) { 198281cb6ddcSMark Murray NET2ADD(IAC, IAC); 198381cb6ddcSMark Murray } else { 198481cb6ddcSMark Murray NETADD(c); 198581cb6ddcSMark Murray } 198681cb6ddcSMark Murray } 198781cb6ddcSMark Murray if (count) 198881cb6ddcSMark Murray ring_consumed(&ttyiring, count); 198981cb6ddcSMark Murray return returnValue||count; /* Non-zero if we did anything */ 199081cb6ddcSMark Murray } 199181cb6ddcSMark Murray 199281cb6ddcSMark Murray /* 199381cb6ddcSMark Murray * Scheduler() 199481cb6ddcSMark Murray * 199581cb6ddcSMark Murray * Try to do something. 199681cb6ddcSMark Murray * 199781cb6ddcSMark Murray * If we do something useful, return 1; else return 0. 199881cb6ddcSMark Murray * 199981cb6ddcSMark Murray */ 200081cb6ddcSMark Murray 20018fa113e5SMark Murray static int 20028fa113e5SMark Murray Scheduler(int block) 200381cb6ddcSMark Murray { 200481cb6ddcSMark Murray /* One wants to be a bit careful about setting returnValue 200581cb6ddcSMark Murray * to one, since a one implies we did some useful work, 200681cb6ddcSMark Murray * and therefore probably won't be called to block next 200781cb6ddcSMark Murray */ 200881cb6ddcSMark Murray int returnValue; 200981cb6ddcSMark Murray int netin, netout, netex, ttyin, ttyout; 201081cb6ddcSMark Murray 201181cb6ddcSMark Murray /* Decide which rings should be processed */ 201281cb6ddcSMark Murray 201381cb6ddcSMark Murray netout = ring_full_count(&netoring) && 201481cb6ddcSMark Murray (flushline || 201581cb6ddcSMark Murray (my_want_state_is_wont(TELOPT_LINEMODE) 201681cb6ddcSMark Murray #ifdef KLUDGELINEMODE 201781cb6ddcSMark Murray && (!kludgelinemode || my_want_state_is_do(TELOPT_SGA)) 201881cb6ddcSMark Murray #endif 201981cb6ddcSMark Murray ) || 202081cb6ddcSMark Murray my_want_state_is_will(TELOPT_BINARY)); 202181cb6ddcSMark Murray ttyout = ring_full_count(&ttyoring); 202281cb6ddcSMark Murray 202304c426ccSMark Murray ttyin = ring_empty_count(&ttyiring) && (clienteof == 0); 202481cb6ddcSMark Murray 202581cb6ddcSMark Murray netin = !ISend && ring_empty_count(&netiring); 202681cb6ddcSMark Murray 202781cb6ddcSMark Murray netex = !SYNCHing; 202881cb6ddcSMark Murray 202981cb6ddcSMark Murray /* Call to system code to process rings */ 203081cb6ddcSMark Murray 203181cb6ddcSMark Murray returnValue = process_rings(netin, netout, netex, ttyin, ttyout, !block); 203281cb6ddcSMark Murray 203381cb6ddcSMark Murray /* Now, look at the input rings, looking for work to do. */ 203481cb6ddcSMark Murray 203581cb6ddcSMark Murray if (ring_full_count(&ttyiring)) { 203681cb6ddcSMark Murray returnValue |= telsnd(); 203781cb6ddcSMark Murray } 203881cb6ddcSMark Murray 203981cb6ddcSMark Murray if (ring_full_count(&netiring)) { 204081cb6ddcSMark Murray returnValue |= telrcv(); 204181cb6ddcSMark Murray } 204281cb6ddcSMark Murray return returnValue; 204381cb6ddcSMark Murray } 204481cb6ddcSMark Murray 20458fa113e5SMark Murray #ifdef AUTHENTICATION 20468fa113e5SMark Murray #define __unusedhere 20478fa113e5SMark Murray #else 20488fa113e5SMark Murray #define __unusedhere __unused 20498fa113e5SMark Murray #endif 205081cb6ddcSMark Murray /* 205181cb6ddcSMark Murray * Select from tty and network... 205281cb6ddcSMark Murray */ 205381cb6ddcSMark Murray void 20548fa113e5SMark Murray telnet(char *user __unusedhere) 205581cb6ddcSMark Murray { 205681cb6ddcSMark Murray sys_telnet_init(); 205781cb6ddcSMark Murray 20588fa113e5SMark Murray #ifdef AUTHENTICATION 20598fa113e5SMark Murray #ifdef ENCRYPTION 206081cb6ddcSMark Murray { 206181cb6ddcSMark Murray static char local_host[256] = { 0 }; 206281cb6ddcSMark Murray 206381cb6ddcSMark Murray if (!local_host[0]) { 206481cb6ddcSMark Murray gethostname(local_host, sizeof(local_host)); 206581cb6ddcSMark Murray local_host[sizeof(local_host)-1] = 0; 206681cb6ddcSMark Murray } 206781cb6ddcSMark Murray auth_encrypt_init(local_host, hostname, "TELNET", 0); 206881cb6ddcSMark Murray auth_encrypt_user(user); 206981cb6ddcSMark Murray } 20708fa113e5SMark Murray #endif 20718fa113e5SMark Murray #endif 207281cb6ddcSMark Murray if (telnetport) { 20738fa113e5SMark Murray #ifdef AUTHENTICATION 207481cb6ddcSMark Murray if (autologin) 207581cb6ddcSMark Murray send_will(TELOPT_AUTHENTICATION, 1); 207681cb6ddcSMark Murray #endif 207781cb6ddcSMark Murray #ifdef ENCRYPTION 207881cb6ddcSMark Murray send_do(TELOPT_ENCRYPT, 1); 207981cb6ddcSMark Murray send_will(TELOPT_ENCRYPT, 1); 208081cb6ddcSMark Murray #endif /* ENCRYPTION */ 208181cb6ddcSMark Murray send_do(TELOPT_SGA, 1); 208281cb6ddcSMark Murray send_will(TELOPT_TTYPE, 1); 208381cb6ddcSMark Murray send_will(TELOPT_NAWS, 1); 208481cb6ddcSMark Murray send_will(TELOPT_TSPEED, 1); 208581cb6ddcSMark Murray send_will(TELOPT_LFLOW, 1); 208681cb6ddcSMark Murray send_will(TELOPT_LINEMODE, 1); 208781cb6ddcSMark Murray send_will(TELOPT_NEW_ENVIRON, 1); 208881cb6ddcSMark Murray send_do(TELOPT_STATUS, 1); 20898fa113e5SMark Murray if (env_getvalue("DISPLAY")) 209081cb6ddcSMark Murray send_will(TELOPT_XDISPLOC, 1); 209181cb6ddcSMark Murray if (eight) 209281cb6ddcSMark Murray tel_enter_binary(eight); 209381cb6ddcSMark Murray } 209481cb6ddcSMark Murray 209581cb6ddcSMark Murray for (;;) { 209681cb6ddcSMark Murray int schedValue; 209781cb6ddcSMark Murray 209881cb6ddcSMark Murray while ((schedValue = Scheduler(0)) != 0) { 209981cb6ddcSMark Murray if (schedValue == -1) { 210081cb6ddcSMark Murray setcommandmode(); 210181cb6ddcSMark Murray return; 210281cb6ddcSMark Murray } 210381cb6ddcSMark Murray } 210481cb6ddcSMark Murray 210581cb6ddcSMark Murray if (Scheduler(1) == -1) { 210681cb6ddcSMark Murray setcommandmode(); 210781cb6ddcSMark Murray return; 210881cb6ddcSMark Murray } 210981cb6ddcSMark Murray } 211081cb6ddcSMark Murray } 211181cb6ddcSMark Murray 211281cb6ddcSMark Murray #if 0 /* XXX - this not being in is a bug */ 211381cb6ddcSMark Murray /* 211481cb6ddcSMark Murray * nextitem() 211581cb6ddcSMark Murray * 211681cb6ddcSMark Murray * Return the address of the next "item" in the TELNET data 211781cb6ddcSMark Murray * stream. This will be the address of the next character if 211881cb6ddcSMark Murray * the current address is a user data character, or it will 211981cb6ddcSMark Murray * be the address of the character following the TELNET command 212081cb6ddcSMark Murray * if the current address is a TELNET IAC ("I Am a Command") 212181cb6ddcSMark Murray * character. 212281cb6ddcSMark Murray */ 212381cb6ddcSMark Murray 212481cb6ddcSMark Murray static char * 21258fa113e5SMark Murray nextitem(char *current) 212681cb6ddcSMark Murray { 212781cb6ddcSMark Murray if ((*current&0xff) != IAC) { 212881cb6ddcSMark Murray return current+1; 212981cb6ddcSMark Murray } 213081cb6ddcSMark Murray switch (*(current+1)&0xff) { 213181cb6ddcSMark Murray case DO: 213281cb6ddcSMark Murray case DONT: 213381cb6ddcSMark Murray case WILL: 213481cb6ddcSMark Murray case WONT: 213581cb6ddcSMark Murray return current+3; 213681cb6ddcSMark Murray case SB: /* loop forever looking for the SE */ 213781cb6ddcSMark Murray { 21388fa113e5SMark Murray char *look = current+2; 213981cb6ddcSMark Murray 214081cb6ddcSMark Murray for (;;) { 214181cb6ddcSMark Murray if ((*look++&0xff) == IAC) { 214281cb6ddcSMark Murray if ((*look++&0xff) == SE) { 214381cb6ddcSMark Murray return look; 214481cb6ddcSMark Murray } 214581cb6ddcSMark Murray } 214681cb6ddcSMark Murray } 214781cb6ddcSMark Murray } 214881cb6ddcSMark Murray default: 214981cb6ddcSMark Murray return current+2; 215081cb6ddcSMark Murray } 215181cb6ddcSMark Murray } 215281cb6ddcSMark Murray #endif /* 0 */ 215381cb6ddcSMark Murray 215481cb6ddcSMark Murray /* 215581cb6ddcSMark Murray * netclear() 215681cb6ddcSMark Murray * 215781cb6ddcSMark Murray * We are about to do a TELNET SYNCH operation. Clear 215881cb6ddcSMark Murray * the path to the network. 215981cb6ddcSMark Murray * 216081cb6ddcSMark Murray * Things are a bit tricky since we may have sent the first 216181cb6ddcSMark Murray * byte or so of a previous TELNET command into the network. 216281cb6ddcSMark Murray * So, we have to scan the network buffer from the beginning 216381cb6ddcSMark Murray * until we are up to where we want to be. 216481cb6ddcSMark Murray * 216581cb6ddcSMark Murray * A side effect of what we do, just to keep things 216681cb6ddcSMark Murray * simple, is to clear the urgent data pointer. The principal 216781cb6ddcSMark Murray * caller should be setting the urgent data pointer AFTER calling 216881cb6ddcSMark Murray * us in any case. 216981cb6ddcSMark Murray */ 217081cb6ddcSMark Murray 217181cb6ddcSMark Murray static void 21728fa113e5SMark Murray netclear(void) 217381cb6ddcSMark Murray { 21748fa113e5SMark Murray /* Deleted */ 217581cb6ddcSMark Murray } 217681cb6ddcSMark Murray 217781cb6ddcSMark Murray /* 217881cb6ddcSMark Murray * These routines add various telnet commands to the data stream. 217981cb6ddcSMark Murray */ 218081cb6ddcSMark Murray 218181cb6ddcSMark Murray static void 21828fa113e5SMark Murray doflush(void) 218381cb6ddcSMark Murray { 218481cb6ddcSMark Murray NET2ADD(IAC, DO); 218581cb6ddcSMark Murray NETADD(TELOPT_TM); 218681cb6ddcSMark Murray flushline = 1; 218781cb6ddcSMark Murray flushout = 1; 218881cb6ddcSMark Murray (void) ttyflush(1); /* Flush/drop output */ 218981cb6ddcSMark Murray /* do printoption AFTER flush, otherwise the output gets tossed... */ 219081cb6ddcSMark Murray printoption("SENT", DO, TELOPT_TM); 219181cb6ddcSMark Murray } 219281cb6ddcSMark Murray 219381cb6ddcSMark Murray void 21948fa113e5SMark Murray xmitAO(void) 219581cb6ddcSMark Murray { 219681cb6ddcSMark Murray NET2ADD(IAC, AO); 219781cb6ddcSMark Murray printoption("SENT", IAC, AO); 219881cb6ddcSMark Murray if (autoflush) { 219981cb6ddcSMark Murray doflush(); 220081cb6ddcSMark Murray } 220181cb6ddcSMark Murray } 220281cb6ddcSMark Murray 220381cb6ddcSMark Murray void 22048fa113e5SMark Murray xmitEL(void) 220581cb6ddcSMark Murray { 220681cb6ddcSMark Murray NET2ADD(IAC, EL); 220781cb6ddcSMark Murray printoption("SENT", IAC, EL); 220881cb6ddcSMark Murray } 220981cb6ddcSMark Murray 221081cb6ddcSMark Murray void 22118fa113e5SMark Murray xmitEC(void) 221281cb6ddcSMark Murray { 221381cb6ddcSMark Murray NET2ADD(IAC, EC); 221481cb6ddcSMark Murray printoption("SENT", IAC, EC); 221581cb6ddcSMark Murray } 221681cb6ddcSMark Murray 221781cb6ddcSMark Murray int 22188fa113e5SMark Murray dosynch(char *ch __unused) 221981cb6ddcSMark Murray { 222081cb6ddcSMark Murray netclear(); /* clear the path to the network */ 222181cb6ddcSMark Murray NETADD(IAC); 222281cb6ddcSMark Murray setneturg(); 222381cb6ddcSMark Murray NETADD(DM); 222481cb6ddcSMark Murray printoption("SENT", IAC, DM); 222581cb6ddcSMark Murray return 1; 222681cb6ddcSMark Murray } 222781cb6ddcSMark Murray 222881cb6ddcSMark Murray int want_status_response = 0; 222981cb6ddcSMark Murray 223081cb6ddcSMark Murray int 22318fa113e5SMark Murray get_status(char *ch __unused) 223281cb6ddcSMark Murray { 223381cb6ddcSMark Murray unsigned char tmp[16]; 22348fa113e5SMark Murray unsigned char *cp; 223581cb6ddcSMark Murray 223681cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_STATUS)) { 223781cb6ddcSMark Murray printf("Remote side does not support STATUS option\n"); 223881cb6ddcSMark Murray return 0; 223981cb6ddcSMark Murray } 224081cb6ddcSMark Murray cp = tmp; 224181cb6ddcSMark Murray 224281cb6ddcSMark Murray *cp++ = IAC; 224381cb6ddcSMark Murray *cp++ = SB; 224481cb6ddcSMark Murray *cp++ = TELOPT_STATUS; 224581cb6ddcSMark Murray *cp++ = TELQUAL_SEND; 224681cb6ddcSMark Murray *cp++ = IAC; 224781cb6ddcSMark Murray *cp++ = SE; 224881cb6ddcSMark Murray if (NETROOM() >= cp - tmp) { 224981cb6ddcSMark Murray ring_supply_data(&netoring, tmp, cp-tmp); 225081cb6ddcSMark Murray printsub('>', tmp+2, cp - tmp - 2); 225181cb6ddcSMark Murray } 225281cb6ddcSMark Murray ++want_status_response; 225381cb6ddcSMark Murray return 1; 225481cb6ddcSMark Murray } 225581cb6ddcSMark Murray 225681cb6ddcSMark Murray void 22578fa113e5SMark Murray intp(void) 225881cb6ddcSMark Murray { 225981cb6ddcSMark Murray NET2ADD(IAC, IP); 226081cb6ddcSMark Murray printoption("SENT", IAC, IP); 226181cb6ddcSMark Murray flushline = 1; 226281cb6ddcSMark Murray if (autoflush) { 226381cb6ddcSMark Murray doflush(); 226481cb6ddcSMark Murray } 226581cb6ddcSMark Murray if (autosynch) { 22668fa113e5SMark Murray dosynch(NULL); 226781cb6ddcSMark Murray } 226881cb6ddcSMark Murray } 226981cb6ddcSMark Murray 227081cb6ddcSMark Murray void 22718fa113e5SMark Murray sendbrk(void) 227281cb6ddcSMark Murray { 227381cb6ddcSMark Murray NET2ADD(IAC, BREAK); 227481cb6ddcSMark Murray printoption("SENT", IAC, BREAK); 227581cb6ddcSMark Murray flushline = 1; 227681cb6ddcSMark Murray if (autoflush) { 227781cb6ddcSMark Murray doflush(); 227881cb6ddcSMark Murray } 227981cb6ddcSMark Murray if (autosynch) { 22808fa113e5SMark Murray dosynch(NULL); 228181cb6ddcSMark Murray } 228281cb6ddcSMark Murray } 228381cb6ddcSMark Murray 228481cb6ddcSMark Murray void 22858fa113e5SMark Murray sendabort(void) 228681cb6ddcSMark Murray { 228781cb6ddcSMark Murray NET2ADD(IAC, ABORT); 228881cb6ddcSMark Murray printoption("SENT", IAC, ABORT); 228981cb6ddcSMark Murray flushline = 1; 229081cb6ddcSMark Murray if (autoflush) { 229181cb6ddcSMark Murray doflush(); 229281cb6ddcSMark Murray } 229381cb6ddcSMark Murray if (autosynch) { 22948fa113e5SMark Murray dosynch(NULL); 229581cb6ddcSMark Murray } 229681cb6ddcSMark Murray } 229781cb6ddcSMark Murray 229881cb6ddcSMark Murray void 22998fa113e5SMark Murray sendsusp(void) 230081cb6ddcSMark Murray { 230181cb6ddcSMark Murray NET2ADD(IAC, SUSP); 230281cb6ddcSMark Murray printoption("SENT", IAC, SUSP); 230381cb6ddcSMark Murray flushline = 1; 230481cb6ddcSMark Murray if (autoflush) { 230581cb6ddcSMark Murray doflush(); 230681cb6ddcSMark Murray } 230781cb6ddcSMark Murray if (autosynch) { 23088fa113e5SMark Murray dosynch(NULL); 230981cb6ddcSMark Murray } 231081cb6ddcSMark Murray } 231181cb6ddcSMark Murray 231281cb6ddcSMark Murray void 23138fa113e5SMark Murray sendeof(void) 231481cb6ddcSMark Murray { 231581cb6ddcSMark Murray NET2ADD(IAC, xEOF); 231681cb6ddcSMark Murray printoption("SENT", IAC, xEOF); 231781cb6ddcSMark Murray } 231881cb6ddcSMark Murray 231981cb6ddcSMark Murray void 23208fa113e5SMark Murray sendayt(void) 232181cb6ddcSMark Murray { 232281cb6ddcSMark Murray NET2ADD(IAC, AYT); 232381cb6ddcSMark Murray printoption("SENT", IAC, AYT); 232481cb6ddcSMark Murray } 232581cb6ddcSMark Murray 232681cb6ddcSMark Murray /* 232781cb6ddcSMark Murray * Send a window size update to the remote system. 232881cb6ddcSMark Murray */ 232981cb6ddcSMark Murray 233081cb6ddcSMark Murray void 23318fa113e5SMark Murray sendnaws(void) 233281cb6ddcSMark Murray { 233381cb6ddcSMark Murray long rows, cols; 233481cb6ddcSMark Murray unsigned char tmp[16]; 23358fa113e5SMark Murray unsigned char *cp; 233681cb6ddcSMark Murray 233781cb6ddcSMark Murray if (my_state_is_wont(TELOPT_NAWS)) 233881cb6ddcSMark Murray return; 233981cb6ddcSMark Murray 234081cb6ddcSMark Murray #define PUTSHORT(cp, x) { if ((*cp++ = ((x)>>8)&0xff) == IAC) *cp++ = IAC; \ 234181cb6ddcSMark Murray if ((*cp++ = ((x))&0xff) == IAC) *cp++ = IAC; } 234281cb6ddcSMark Murray 234381cb6ddcSMark Murray if (TerminalWindowSize(&rows, &cols) == 0) { /* Failed */ 234481cb6ddcSMark Murray return; 234581cb6ddcSMark Murray } 234681cb6ddcSMark Murray 234781cb6ddcSMark Murray cp = tmp; 234881cb6ddcSMark Murray 234981cb6ddcSMark Murray *cp++ = IAC; 235081cb6ddcSMark Murray *cp++ = SB; 235181cb6ddcSMark Murray *cp++ = TELOPT_NAWS; 235281cb6ddcSMark Murray PUTSHORT(cp, cols); 235381cb6ddcSMark Murray PUTSHORT(cp, rows); 235481cb6ddcSMark Murray *cp++ = IAC; 235581cb6ddcSMark Murray *cp++ = SE; 235681cb6ddcSMark Murray if (NETROOM() >= cp - tmp) { 235781cb6ddcSMark Murray ring_supply_data(&netoring, tmp, cp-tmp); 235881cb6ddcSMark Murray printsub('>', tmp+2, cp - tmp - 2); 235981cb6ddcSMark Murray } 236081cb6ddcSMark Murray } 236181cb6ddcSMark Murray 236281cb6ddcSMark Murray void 23638fa113e5SMark Murray tel_enter_binary(int rw) 236481cb6ddcSMark Murray { 236581cb6ddcSMark Murray if (rw&1) 236681cb6ddcSMark Murray send_do(TELOPT_BINARY, 1); 236781cb6ddcSMark Murray if (rw&2) 236881cb6ddcSMark Murray send_will(TELOPT_BINARY, 1); 236981cb6ddcSMark Murray } 237081cb6ddcSMark Murray 237181cb6ddcSMark Murray void 23728fa113e5SMark Murray tel_leave_binary(int rw) 237381cb6ddcSMark Murray { 237481cb6ddcSMark Murray if (rw&1) 237581cb6ddcSMark Murray send_dont(TELOPT_BINARY, 1); 237681cb6ddcSMark Murray if (rw&2) 237781cb6ddcSMark Murray send_wont(TELOPT_BINARY, 1); 237881cb6ddcSMark Murray } 2379