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> 55ad11def5SEnji Cooper #include <arpa/inet.h> 568fa113e5SMark Murray #include <arpa/telnet.h> 5704c426ccSMark Murray 5881cb6ddcSMark Murray #include "ring.h" 5981cb6ddcSMark Murray 6081cb6ddcSMark Murray #include "defines.h" 6181cb6ddcSMark Murray #include "externs.h" 6281cb6ddcSMark Murray #include "types.h" 6381cb6ddcSMark Murray #include "general.h" 6481cb6ddcSMark Murray 658fa113e5SMark Murray #ifdef AUTHENTICATION 6604c426ccSMark Murray #include <libtelnet/auth.h> 6704c426ccSMark Murray #endif 688fa113e5SMark Murray #ifdef ENCRYPTION 6904c426ccSMark Murray #include <libtelnet/encrypt.h> 7004c426ccSMark Murray #endif 7104c426ccSMark Murray #include <libtelnet/misc.h> 72ad11def5SEnji Cooper 7381cb6ddcSMark Murray #define strip(x) ((my_want_state_is_wont(TELOPT_BINARY)) ? ((x)&0x7f) : (x)) 7481cb6ddcSMark Murray 7581cb6ddcSMark Murray static unsigned char subbuffer[SUBBUFSIZE], 7681cb6ddcSMark Murray *subpointer, *subend; /* buffer for sub-options */ 7781cb6ddcSMark Murray #define SB_CLEAR() subpointer = subbuffer; 7881cb6ddcSMark Murray #define SB_TERM() { subend = subpointer; SB_CLEAR(); } 7981cb6ddcSMark Murray #define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \ 8081cb6ddcSMark Murray *subpointer++ = (c); \ 8181cb6ddcSMark Murray } 8281cb6ddcSMark Murray 8381cb6ddcSMark Murray #define SB_GET() ((*subpointer++)&0xff) 8481cb6ddcSMark Murray #define SB_PEEK() ((*subpointer)&0xff) 8581cb6ddcSMark Murray #define SB_EOF() (subpointer >= subend) 8681cb6ddcSMark Murray #define SB_LEN() (subend - subpointer) 8781cb6ddcSMark Murray 8881cb6ddcSMark Murray char options[256]; /* The combined options */ 8981cb6ddcSMark Murray char do_dont_resp[256]; 9081cb6ddcSMark Murray char will_wont_resp[256]; 9181cb6ddcSMark Murray 9281cb6ddcSMark Murray int 9381cb6ddcSMark Murray eight = 0, 9481cb6ddcSMark Murray autologin = 0, /* Autologin anyone? */ 9581cb6ddcSMark Murray skiprc = 0, 9681cb6ddcSMark Murray connected, 9781cb6ddcSMark Murray showoptions, 9881cb6ddcSMark Murray ISend, /* trying to send network data in */ 99074e8e8eSMark Murray telnet_debug = 0, 10081cb6ddcSMark Murray crmod, 10181cb6ddcSMark Murray netdata, /* Print out network data flow */ 10281cb6ddcSMark Murray crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */ 10381cb6ddcSMark Murray telnetport, 10481cb6ddcSMark Murray SYNCHing, /* we are in TELNET SYNCH mode */ 10581cb6ddcSMark Murray flushout, /* flush output */ 10681cb6ddcSMark Murray autoflush = 0, /* flush output when interrupting? */ 10781cb6ddcSMark Murray autosynch, /* send interrupt characters with SYNCH? */ 10881cb6ddcSMark Murray localflow, /* we handle flow control locally */ 10981cb6ddcSMark Murray restartany, /* if flow control enabled, restart on any character */ 11081cb6ddcSMark Murray localchars, /* we recognize interrupt/quit */ 11181cb6ddcSMark Murray donelclchars, /* the user has set "localchars" */ 11281cb6ddcSMark Murray donebinarytoggle, /* the user has put us in binary */ 11381cb6ddcSMark Murray dontlecho, /* do we suppress local echoing right now? */ 11404c426ccSMark Murray globalmode, 11542cf8219SRuslan Ermilov doaddrlookup = 1, /* do a reverse address lookup? */ 11604c426ccSMark Murray clienteof = 0; 11781cb6ddcSMark Murray 11881cb6ddcSMark Murray char *prompt = 0; 11921f083c0SMark Murray #ifdef ENCRYPTION 120cd189e11SPeter Wemm char *line; /* hack around breakage in sra.c :-( !! */ 12121f083c0SMark Murray #endif 12281cb6ddcSMark Murray 12381cb6ddcSMark Murray cc_t escape; 12481cb6ddcSMark Murray cc_t rlogin; 12581cb6ddcSMark Murray #ifdef KLUDGELINEMODE 12681cb6ddcSMark Murray cc_t echoc; 12781cb6ddcSMark Murray #endif 12881cb6ddcSMark Murray 12981cb6ddcSMark Murray /* 13081cb6ddcSMark Murray * Telnet receiver states for fsm 13181cb6ddcSMark Murray */ 13281cb6ddcSMark Murray #define TS_DATA 0 13381cb6ddcSMark Murray #define TS_IAC 1 13481cb6ddcSMark Murray #define TS_WILL 2 13581cb6ddcSMark Murray #define TS_WONT 3 13681cb6ddcSMark Murray #define TS_DO 4 13781cb6ddcSMark Murray #define TS_DONT 5 13881cb6ddcSMark Murray #define TS_CR 6 13981cb6ddcSMark Murray #define TS_SB 7 /* sub-option collection */ 14081cb6ddcSMark Murray #define TS_SE 8 /* looking for sub-option end */ 14181cb6ddcSMark Murray 14281cb6ddcSMark Murray static int telrcv_state; 14381cb6ddcSMark Murray #ifdef OLD_ENVIRON 14481cb6ddcSMark Murray unsigned char telopt_environ = TELOPT_NEW_ENVIRON; 14581cb6ddcSMark Murray #else 14681cb6ddcSMark Murray # define telopt_environ TELOPT_NEW_ENVIRON 14781cb6ddcSMark Murray #endif 14881cb6ddcSMark Murray 1498fa113e5SMark Murray jmp_buf toplevel; 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; 166ad11def5SEnji Cooper 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 } 200ad11def5SEnji Cooper 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 210ad11def5SEnji Cooper unsigned char ComPortBaudRate[256]; 211ad11def5SEnji Cooper 212ad11def5SEnji Cooper void 213ad11def5SEnji Cooper DoBaudRate(char *arg) 214ad11def5SEnji Cooper { 215ad11def5SEnji Cooper char *temp, temp2[10]; 216ad11def5SEnji Cooper int i; 217ad11def5SEnji Cooper uint32_t baudrate; 218ad11def5SEnji Cooper 219ad11def5SEnji Cooper errno = 0; 220ad11def5SEnji Cooper baudrate = (uint32_t)strtol(arg, &temp, 10); 221ad11def5SEnji Cooper if (temp[0] != '\0' || (baudrate == 0 && errno != 0)) 222ad11def5SEnji Cooper ExitString("Invalid baud rate provided.\n", 1); 223ad11def5SEnji Cooper 224ad11def5SEnji Cooper for (i = 1; termspeeds[i].speed != -1; i++) 225ad11def5SEnji Cooper if (baudrate == termspeeds[i].speed) 226ad11def5SEnji Cooper break; 227ad11def5SEnji Cooper if (termspeeds[i].speed == -1) 228ad11def5SEnji Cooper ExitString("Invalid baud rate provided.\n", 1); 229ad11def5SEnji Cooper 230ad11def5SEnji Cooper strlcpy(ComPortBaudRate, arg, sizeof(ComPortBaudRate)); 231ad11def5SEnji Cooper 232ad11def5SEnji Cooper if (NETROOM() < sizeof(temp2)) { 233ad11def5SEnji Cooper ExitString("No room in buffer for baud rate.\n", 1); 234ad11def5SEnji Cooper /* NOTREACHED */ 235ad11def5SEnji Cooper } 236ad11def5SEnji Cooper 237ad11def5SEnji Cooper snprintf(temp2, sizeof(temp2), "%c%c%c%c....%c%c", IAC, SB, TELOPT_COMPORT, 238ad11def5SEnji Cooper COMPORT_SET_BAUDRATE, IAC, SE); 239ad11def5SEnji Cooper 240ad11def5SEnji Cooper baudrate = htonl(baudrate); 241ad11def5SEnji Cooper memcpy(&temp2[4], &baudrate, sizeof(baudrate)); 242ad11def5SEnji Cooper ring_supply_data(&netoring, temp2, sizeof(temp2)); 243ad11def5SEnji Cooper printsub('>', &temp[2], sizeof(temp2) - 2); 244ad11def5SEnji Cooper } 245ad11def5SEnji Cooper 24681cb6ddcSMark Murray void 2478fa113e5SMark Murray send_do(int c, int init) 24881cb6ddcSMark Murray { 24981cb6ddcSMark Murray if (init) { 25081cb6ddcSMark Murray if (((do_dont_resp[c] == 0) && my_state_is_do(c)) || 25181cb6ddcSMark Murray my_want_state_is_do(c)) 25281cb6ddcSMark Murray return; 25381cb6ddcSMark Murray set_my_want_state_do(c); 25481cb6ddcSMark Murray do_dont_resp[c]++; 25581cb6ddcSMark Murray } 2563a44a4c3SAnton Berezin if (telnetport < 0) 2573a44a4c3SAnton Berezin return; 25881cb6ddcSMark Murray NET2ADD(IAC, DO); 25981cb6ddcSMark Murray NETADD(c); 26081cb6ddcSMark Murray printoption("SENT", DO, c); 26181cb6ddcSMark Murray } 26281cb6ddcSMark Murray 26381cb6ddcSMark Murray void 2648fa113e5SMark Murray send_dont(int c, int init) 26581cb6ddcSMark Murray { 26681cb6ddcSMark Murray if (init) { 26781cb6ddcSMark Murray if (((do_dont_resp[c] == 0) && my_state_is_dont(c)) || 26881cb6ddcSMark Murray my_want_state_is_dont(c)) 26981cb6ddcSMark Murray return; 27081cb6ddcSMark Murray set_my_want_state_dont(c); 27181cb6ddcSMark Murray do_dont_resp[c]++; 27281cb6ddcSMark Murray } 2733a44a4c3SAnton Berezin if (telnetport < 0) 2743a44a4c3SAnton Berezin return; 27581cb6ddcSMark Murray NET2ADD(IAC, DONT); 27681cb6ddcSMark Murray NETADD(c); 27781cb6ddcSMark Murray printoption("SENT", DONT, c); 27881cb6ddcSMark Murray } 27981cb6ddcSMark Murray 28081cb6ddcSMark Murray void 2818fa113e5SMark Murray send_will(int c, int init) 28281cb6ddcSMark Murray { 28381cb6ddcSMark Murray if (init) { 28481cb6ddcSMark Murray if (((will_wont_resp[c] == 0) && my_state_is_will(c)) || 28581cb6ddcSMark Murray my_want_state_is_will(c)) 28681cb6ddcSMark Murray return; 28781cb6ddcSMark Murray set_my_want_state_will(c); 28881cb6ddcSMark Murray will_wont_resp[c]++; 28981cb6ddcSMark Murray } 2903a44a4c3SAnton Berezin if (telnetport < 0) 2913a44a4c3SAnton Berezin return; 29281cb6ddcSMark Murray NET2ADD(IAC, WILL); 29381cb6ddcSMark Murray NETADD(c); 29481cb6ddcSMark Murray printoption("SENT", WILL, c); 29581cb6ddcSMark Murray } 29681cb6ddcSMark Murray 29781cb6ddcSMark Murray void 2988fa113e5SMark Murray send_wont(int c, int init) 29981cb6ddcSMark Murray { 30081cb6ddcSMark Murray if (init) { 30181cb6ddcSMark Murray if (((will_wont_resp[c] == 0) && my_state_is_wont(c)) || 30281cb6ddcSMark Murray my_want_state_is_wont(c)) 30381cb6ddcSMark Murray return; 30481cb6ddcSMark Murray set_my_want_state_wont(c); 30581cb6ddcSMark Murray will_wont_resp[c]++; 30681cb6ddcSMark Murray } 3073a44a4c3SAnton Berezin if (telnetport < 0) 3083a44a4c3SAnton Berezin return; 30981cb6ddcSMark Murray NET2ADD(IAC, WONT); 31081cb6ddcSMark Murray NETADD(c); 31181cb6ddcSMark Murray printoption("SENT", WONT, c); 31281cb6ddcSMark Murray } 31381cb6ddcSMark Murray 31481cb6ddcSMark Murray void 3158fa113e5SMark Murray willoption(int option) 31681cb6ddcSMark Murray { 31781cb6ddcSMark Murray int new_state_ok = 0; 31881cb6ddcSMark Murray 31981cb6ddcSMark Murray if (do_dont_resp[option]) { 32081cb6ddcSMark Murray --do_dont_resp[option]; 32181cb6ddcSMark Murray if (do_dont_resp[option] && my_state_is_do(option)) 32281cb6ddcSMark Murray --do_dont_resp[option]; 32381cb6ddcSMark Murray } 32481cb6ddcSMark Murray 32581cb6ddcSMark Murray if ((do_dont_resp[option] == 0) && my_want_state_is_dont(option)) { 32681cb6ddcSMark Murray 32781cb6ddcSMark Murray switch (option) { 32881cb6ddcSMark Murray 32981cb6ddcSMark Murray case TELOPT_ECHO: 33081cb6ddcSMark Murray case TELOPT_BINARY: 33181cb6ddcSMark Murray case TELOPT_SGA: 33281cb6ddcSMark Murray settimer(modenegotiated); 33381cb6ddcSMark Murray /* FALLTHROUGH */ 33481cb6ddcSMark Murray case TELOPT_STATUS: 3358fa113e5SMark Murray #ifdef AUTHENTICATION 33681cb6ddcSMark Murray case TELOPT_AUTHENTICATION: 33781cb6ddcSMark Murray #endif 33881cb6ddcSMark Murray #ifdef ENCRYPTION 33981cb6ddcSMark Murray case TELOPT_ENCRYPT: 34081cb6ddcSMark Murray #endif /* ENCRYPTION */ 34181cb6ddcSMark Murray new_state_ok = 1; 34281cb6ddcSMark Murray break; 34381cb6ddcSMark Murray 34481cb6ddcSMark Murray case TELOPT_TM: 34581cb6ddcSMark Murray if (flushout) 34681cb6ddcSMark Murray flushout = 0; 34781cb6ddcSMark Murray /* 34881cb6ddcSMark Murray * Special case for TM. If we get back a WILL, 34981cb6ddcSMark Murray * pretend we got back a WONT. 35081cb6ddcSMark Murray */ 35181cb6ddcSMark Murray set_my_want_state_dont(option); 35281cb6ddcSMark Murray set_my_state_dont(option); 35381cb6ddcSMark Murray return; /* Never reply to TM will's/wont's */ 35481cb6ddcSMark Murray 35581cb6ddcSMark Murray case TELOPT_LINEMODE: 35681cb6ddcSMark Murray default: 35781cb6ddcSMark Murray break; 35881cb6ddcSMark Murray } 35981cb6ddcSMark Murray 36081cb6ddcSMark Murray if (new_state_ok) { 36181cb6ddcSMark Murray set_my_want_state_do(option); 36281cb6ddcSMark Murray send_do(option, 0); 36381cb6ddcSMark Murray setconnmode(0); /* possibly set new tty mode */ 36481cb6ddcSMark Murray } else { 36581cb6ddcSMark Murray do_dont_resp[option]++; 36681cb6ddcSMark Murray send_dont(option, 0); 36781cb6ddcSMark Murray } 36881cb6ddcSMark Murray } 36981cb6ddcSMark Murray set_my_state_do(option); 37081cb6ddcSMark Murray #ifdef ENCRYPTION 37181cb6ddcSMark Murray if (option == TELOPT_ENCRYPT) 37281cb6ddcSMark Murray encrypt_send_support(); 37381cb6ddcSMark Murray #endif /* ENCRYPTION */ 37481cb6ddcSMark Murray } 37581cb6ddcSMark Murray 37681cb6ddcSMark Murray void 3778fa113e5SMark Murray wontoption(int option) 37881cb6ddcSMark Murray { 37981cb6ddcSMark Murray if (do_dont_resp[option]) { 38081cb6ddcSMark Murray --do_dont_resp[option]; 38181cb6ddcSMark Murray if (do_dont_resp[option] && my_state_is_dont(option)) 38281cb6ddcSMark Murray --do_dont_resp[option]; 38381cb6ddcSMark Murray } 38481cb6ddcSMark Murray 38581cb6ddcSMark Murray if ((do_dont_resp[option] == 0) && my_want_state_is_do(option)) { 38681cb6ddcSMark Murray 38781cb6ddcSMark Murray switch (option) { 38881cb6ddcSMark Murray 38981cb6ddcSMark Murray #ifdef KLUDGELINEMODE 39081cb6ddcSMark Murray case TELOPT_SGA: 39181cb6ddcSMark Murray if (!kludgelinemode) 39281cb6ddcSMark Murray break; 39381cb6ddcSMark Murray /* FALLTHROUGH */ 39481cb6ddcSMark Murray #endif 39581cb6ddcSMark Murray case TELOPT_ECHO: 39681cb6ddcSMark Murray settimer(modenegotiated); 39781cb6ddcSMark Murray break; 39881cb6ddcSMark Murray 39981cb6ddcSMark Murray case TELOPT_TM: 40081cb6ddcSMark Murray if (flushout) 40181cb6ddcSMark Murray flushout = 0; 40281cb6ddcSMark Murray set_my_want_state_dont(option); 40381cb6ddcSMark Murray set_my_state_dont(option); 40481cb6ddcSMark Murray return; /* Never reply to TM will's/wont's */ 40581cb6ddcSMark Murray 40681cb6ddcSMark Murray default: 40781cb6ddcSMark Murray break; 40881cb6ddcSMark Murray } 40981cb6ddcSMark Murray set_my_want_state_dont(option); 41081cb6ddcSMark Murray if (my_state_is_do(option)) 41181cb6ddcSMark Murray send_dont(option, 0); 41281cb6ddcSMark Murray setconnmode(0); /* Set new tty mode */ 41381cb6ddcSMark Murray } else if (option == TELOPT_TM) { 41481cb6ddcSMark Murray /* 41581cb6ddcSMark Murray * Special case for TM. 41681cb6ddcSMark Murray */ 41781cb6ddcSMark Murray if (flushout) 41881cb6ddcSMark Murray flushout = 0; 41981cb6ddcSMark Murray set_my_want_state_dont(option); 42081cb6ddcSMark Murray } 42181cb6ddcSMark Murray set_my_state_dont(option); 42281cb6ddcSMark Murray } 42381cb6ddcSMark Murray 42481cb6ddcSMark Murray static void 4258fa113e5SMark Murray dooption(int option) 42681cb6ddcSMark Murray { 42781cb6ddcSMark Murray int new_state_ok = 0; 42881cb6ddcSMark Murray 42981cb6ddcSMark Murray if (will_wont_resp[option]) { 43081cb6ddcSMark Murray --will_wont_resp[option]; 43181cb6ddcSMark Murray if (will_wont_resp[option] && my_state_is_will(option)) 43281cb6ddcSMark Murray --will_wont_resp[option]; 43381cb6ddcSMark Murray } 43481cb6ddcSMark Murray 43581cb6ddcSMark Murray if (will_wont_resp[option] == 0) { 43681cb6ddcSMark Murray if (my_want_state_is_wont(option)) { 43781cb6ddcSMark Murray 43881cb6ddcSMark Murray switch (option) { 43981cb6ddcSMark Murray 44081cb6ddcSMark Murray case TELOPT_TM: 44181cb6ddcSMark Murray /* 44281cb6ddcSMark Murray * Special case for TM. We send a WILL, but pretend 44381cb6ddcSMark Murray * we sent WONT. 44481cb6ddcSMark Murray */ 44581cb6ddcSMark Murray send_will(option, 0); 44681cb6ddcSMark Murray set_my_want_state_wont(TELOPT_TM); 44781cb6ddcSMark Murray set_my_state_wont(TELOPT_TM); 44881cb6ddcSMark Murray return; 44981cb6ddcSMark Murray 45081cb6ddcSMark Murray case TELOPT_BINARY: /* binary mode */ 45181cb6ddcSMark Murray case TELOPT_NAWS: /* window size */ 45281cb6ddcSMark Murray case TELOPT_TSPEED: /* terminal speed */ 45381cb6ddcSMark Murray case TELOPT_LFLOW: /* local flow control */ 45481cb6ddcSMark Murray case TELOPT_TTYPE: /* terminal type option */ 45581cb6ddcSMark Murray case TELOPT_SGA: /* no big deal */ 45681cb6ddcSMark Murray #ifdef ENCRYPTION 45781cb6ddcSMark Murray case TELOPT_ENCRYPT: /* encryption variable option */ 45881cb6ddcSMark Murray #endif /* ENCRYPTION */ 45981cb6ddcSMark Murray new_state_ok = 1; 46081cb6ddcSMark Murray break; 46181cb6ddcSMark Murray 46281cb6ddcSMark Murray case TELOPT_NEW_ENVIRON: /* New environment variable option */ 46381cb6ddcSMark Murray #ifdef OLD_ENVIRON 46481cb6ddcSMark Murray if (my_state_is_will(TELOPT_OLD_ENVIRON)) 46581cb6ddcSMark Murray send_wont(TELOPT_OLD_ENVIRON, 1); /* turn off the old */ 46681cb6ddcSMark Murray goto env_common; 46781cb6ddcSMark Murray case TELOPT_OLD_ENVIRON: /* Old environment variable option */ 46881cb6ddcSMark Murray if (my_state_is_will(TELOPT_NEW_ENVIRON)) 46981cb6ddcSMark Murray break; /* Don't enable if new one is in use! */ 47081cb6ddcSMark Murray env_common: 47181cb6ddcSMark Murray telopt_environ = option; 47281cb6ddcSMark Murray #endif 47381cb6ddcSMark Murray new_state_ok = 1; 47481cb6ddcSMark Murray break; 47581cb6ddcSMark Murray 4768fa113e5SMark Murray #ifdef AUTHENTICATION 47781cb6ddcSMark Murray case TELOPT_AUTHENTICATION: 47881cb6ddcSMark Murray if (autologin) 47981cb6ddcSMark Murray new_state_ok = 1; 48081cb6ddcSMark Murray break; 48181cb6ddcSMark Murray #endif 48281cb6ddcSMark Murray 48381cb6ddcSMark Murray case TELOPT_XDISPLOC: /* X Display location */ 4848fa113e5SMark Murray if (env_getvalue("DISPLAY")) 48581cb6ddcSMark Murray new_state_ok = 1; 48681cb6ddcSMark Murray break; 48781cb6ddcSMark Murray 48881cb6ddcSMark Murray case TELOPT_LINEMODE: 48981cb6ddcSMark Murray #ifdef KLUDGELINEMODE 49081cb6ddcSMark Murray kludgelinemode = 0; 49181cb6ddcSMark Murray send_do(TELOPT_SGA, 1); 49281cb6ddcSMark Murray #endif 49381cb6ddcSMark Murray set_my_want_state_will(TELOPT_LINEMODE); 49481cb6ddcSMark Murray send_will(option, 0); 49581cb6ddcSMark Murray set_my_state_will(TELOPT_LINEMODE); 49681cb6ddcSMark Murray slc_init(); 49781cb6ddcSMark Murray return; 49881cb6ddcSMark Murray 49981cb6ddcSMark Murray case TELOPT_ECHO: /* We're never going to echo... */ 50081cb6ddcSMark Murray default: 50181cb6ddcSMark Murray break; 50281cb6ddcSMark Murray } 50381cb6ddcSMark Murray 50481cb6ddcSMark Murray if (new_state_ok) { 50581cb6ddcSMark Murray set_my_want_state_will(option); 50681cb6ddcSMark Murray send_will(option, 0); 50781cb6ddcSMark Murray setconnmode(0); /* Set new tty mode */ 50881cb6ddcSMark Murray } else { 50981cb6ddcSMark Murray will_wont_resp[option]++; 51081cb6ddcSMark Murray send_wont(option, 0); 51181cb6ddcSMark Murray } 51281cb6ddcSMark Murray } else { 51381cb6ddcSMark Murray /* 51481cb6ddcSMark Murray * Handle options that need more things done after the 51581cb6ddcSMark Murray * other side has acknowledged the option. 51681cb6ddcSMark Murray */ 51781cb6ddcSMark Murray switch (option) { 51881cb6ddcSMark Murray case TELOPT_LINEMODE: 51981cb6ddcSMark Murray #ifdef KLUDGELINEMODE 52081cb6ddcSMark Murray kludgelinemode = 0; 52181cb6ddcSMark Murray send_do(TELOPT_SGA, 1); 52281cb6ddcSMark Murray #endif 52381cb6ddcSMark Murray set_my_state_will(option); 52481cb6ddcSMark Murray slc_init(); 52581cb6ddcSMark Murray send_do(TELOPT_SGA, 0); 52681cb6ddcSMark Murray return; 52781cb6ddcSMark Murray } 52881cb6ddcSMark Murray } 52981cb6ddcSMark Murray } 53081cb6ddcSMark Murray set_my_state_will(option); 53181cb6ddcSMark Murray } 53281cb6ddcSMark Murray 53381cb6ddcSMark Murray static void 5348fa113e5SMark Murray dontoption(int option) 53581cb6ddcSMark Murray { 53681cb6ddcSMark Murray 53781cb6ddcSMark Murray if (will_wont_resp[option]) { 53881cb6ddcSMark Murray --will_wont_resp[option]; 53981cb6ddcSMark Murray if (will_wont_resp[option] && my_state_is_wont(option)) 54081cb6ddcSMark Murray --will_wont_resp[option]; 54181cb6ddcSMark Murray } 54281cb6ddcSMark Murray 54381cb6ddcSMark Murray if ((will_wont_resp[option] == 0) && my_want_state_is_will(option)) { 54481cb6ddcSMark Murray switch (option) { 54581cb6ddcSMark Murray case TELOPT_LINEMODE: 54681cb6ddcSMark Murray linemode = 0; /* put us back to the default state */ 54781cb6ddcSMark Murray break; 54881cb6ddcSMark Murray #ifdef OLD_ENVIRON 54981cb6ddcSMark Murray case TELOPT_NEW_ENVIRON: 55081cb6ddcSMark Murray /* 55181cb6ddcSMark Murray * The new environ option wasn't recognized, try 55281cb6ddcSMark Murray * the old one. 55381cb6ddcSMark Murray */ 55481cb6ddcSMark Murray send_will(TELOPT_OLD_ENVIRON, 1); 55581cb6ddcSMark Murray telopt_environ = TELOPT_OLD_ENVIRON; 55681cb6ddcSMark Murray break; 55781cb6ddcSMark Murray #endif 55881cb6ddcSMark Murray } 55981cb6ddcSMark Murray /* we always accept a DONT */ 56081cb6ddcSMark Murray set_my_want_state_wont(option); 56181cb6ddcSMark Murray if (my_state_is_will(option)) 56281cb6ddcSMark Murray send_wont(option, 0); 56381cb6ddcSMark Murray setconnmode(0); /* Set new tty mode */ 56481cb6ddcSMark Murray } 56581cb6ddcSMark Murray set_my_state_wont(option); 56681cb6ddcSMark Murray } 56781cb6ddcSMark Murray 56881cb6ddcSMark Murray /* 56981cb6ddcSMark Murray * Given a buffer returned by tgetent(), this routine will turn 5709a01d32bSJeroen Ruigrok van der Werven * the pipe separated list of names in the buffer into an array 57181cb6ddcSMark Murray * of pointers to null terminated names. We toss out any bad, 57281cb6ddcSMark Murray * duplicate, or verbose names (names with spaces). 57381cb6ddcSMark Murray */ 57481cb6ddcSMark Murray 5758fa113e5SMark Murray static const char *name_unknown = "UNKNOWN"; 5768fa113e5SMark Murray static const char *unknown[] = { NULL, NULL }; 57781cb6ddcSMark Murray 5788fa113e5SMark Murray static const char ** 5798fa113e5SMark Murray mklist(char *buf, char *name) 58081cb6ddcSMark Murray { 5818fa113e5SMark Murray int n; 5828fa113e5SMark Murray char c, *cp, **argvp, *cp2, **argv, **avt; 58381cb6ddcSMark Murray 58481cb6ddcSMark Murray if (name) { 58521f083c0SMark Murray if (strlen(name) > 40) { 58681cb6ddcSMark Murray name = 0; 58781cb6ddcSMark Murray unknown[0] = name_unknown; 58881cb6ddcSMark Murray } else { 58981cb6ddcSMark Murray unknown[0] = name; 59081cb6ddcSMark Murray upcase(name); 59181cb6ddcSMark Murray } 59281cb6ddcSMark Murray } else 59381cb6ddcSMark Murray unknown[0] = name_unknown; 59481cb6ddcSMark Murray /* 59581cb6ddcSMark Murray * Count up the number of names. 59681cb6ddcSMark Murray */ 59781cb6ddcSMark Murray for (n = 1, cp = buf; *cp && *cp != ':'; cp++) { 59881cb6ddcSMark Murray if (*cp == '|') 59981cb6ddcSMark Murray n++; 60081cb6ddcSMark Murray } 60181cb6ddcSMark Murray /* 60281cb6ddcSMark Murray * Allocate an array to put the name pointers into 60381cb6ddcSMark Murray */ 60481cb6ddcSMark Murray argv = (char **)malloc((n+3)*sizeof(char *)); 60581cb6ddcSMark Murray if (argv == 0) 60681cb6ddcSMark Murray return(unknown); 60781cb6ddcSMark Murray 60881cb6ddcSMark Murray /* 60981cb6ddcSMark Murray * Fill up the array of pointers to names. 61081cb6ddcSMark Murray */ 61181cb6ddcSMark Murray *argv = 0; 61281cb6ddcSMark Murray argvp = argv+1; 61381cb6ddcSMark Murray n = 0; 61481cb6ddcSMark Murray for (cp = cp2 = buf; (c = *cp); cp++) { 61581cb6ddcSMark Murray if (c == '|' || c == ':') { 61681cb6ddcSMark Murray *cp++ = '\0'; 61781cb6ddcSMark Murray /* 61881cb6ddcSMark Murray * Skip entries that have spaces or are over 40 61981cb6ddcSMark Murray * characters long. If this is our environment 62081cb6ddcSMark Murray * name, then put it up front. Otherwise, as 62181cb6ddcSMark Murray * long as this is not a duplicate name (case 62281cb6ddcSMark Murray * insensitive) add it to the list. 62381cb6ddcSMark Murray */ 62481cb6ddcSMark Murray if (n || (cp - cp2 > 41)) 62581cb6ddcSMark Murray ; 62681cb6ddcSMark Murray else if (name && (strncasecmp(name, cp2, cp-cp2) == 0)) 62781cb6ddcSMark Murray *argv = cp2; 62881cb6ddcSMark Murray else if (is_unique(cp2, argv+1, argvp)) 62981cb6ddcSMark Murray *argvp++ = cp2; 63081cb6ddcSMark Murray if (c == ':') 63181cb6ddcSMark Murray break; 63281cb6ddcSMark Murray /* 63381cb6ddcSMark Murray * Skip multiple delimiters. Reset cp2 to 63481cb6ddcSMark Murray * the beginning of the next name. Reset n, 63581cb6ddcSMark Murray * the flag for names with spaces. 63681cb6ddcSMark Murray */ 63781cb6ddcSMark Murray while ((c = *cp) == '|') 63881cb6ddcSMark Murray cp++; 63981cb6ddcSMark Murray cp2 = cp; 64081cb6ddcSMark Murray n = 0; 64181cb6ddcSMark Murray } 64281cb6ddcSMark Murray /* 64381cb6ddcSMark Murray * Skip entries with spaces or non-ascii values. 64481cb6ddcSMark Murray * Convert lower case letters to upper case. 64581cb6ddcSMark Murray */ 64681cb6ddcSMark Murray if ((c == ' ') || !isascii(c)) 64781cb6ddcSMark Murray n = 1; 64881cb6ddcSMark Murray else if (islower(c)) 64981cb6ddcSMark Murray *cp = toupper(c); 65081cb6ddcSMark Murray } 65181cb6ddcSMark Murray 65281cb6ddcSMark Murray /* 65381cb6ddcSMark Murray * Check for an old V6 2 character name. If the second 65481cb6ddcSMark Murray * name points to the beginning of the buffer, and is 65581cb6ddcSMark Murray * only 2 characters long, move it to the end of the array. 65681cb6ddcSMark Murray */ 65781cb6ddcSMark Murray if ((argv[1] == buf) && (strlen(argv[1]) == 2)) { 65881cb6ddcSMark Murray --argvp; 65981cb6ddcSMark Murray for (avt = &argv[1]; avt < argvp; avt++) 66081cb6ddcSMark Murray *avt = *(avt+1); 66181cb6ddcSMark Murray *argvp++ = buf; 66281cb6ddcSMark Murray } 66381cb6ddcSMark Murray 66481cb6ddcSMark Murray /* 66581cb6ddcSMark Murray * Duplicate last name, for TTYPE option, and null 66681cb6ddcSMark Murray * terminate the array. If we didn't find a match on 66781cb6ddcSMark Murray * our terminal name, put that name at the beginning. 66881cb6ddcSMark Murray */ 66981cb6ddcSMark Murray cp = *(argvp-1); 67081cb6ddcSMark Murray *argvp++ = cp; 67181cb6ddcSMark Murray *argvp = 0; 67281cb6ddcSMark Murray 67381cb6ddcSMark Murray if (*argv == 0) { 67481cb6ddcSMark Murray if (name) 67581cb6ddcSMark Murray *argv = name; 67681cb6ddcSMark Murray else { 67781cb6ddcSMark Murray --argvp; 67881cb6ddcSMark Murray for (avt = argv; avt < argvp; avt++) 67981cb6ddcSMark Murray *avt = *(avt+1); 68081cb6ddcSMark Murray } 68181cb6ddcSMark Murray } 68281cb6ddcSMark Murray if (*argv) 6838fa113e5SMark Murray return((const char **)argv); 68481cb6ddcSMark Murray else 68581cb6ddcSMark Murray return(unknown); 68681cb6ddcSMark Murray } 68781cb6ddcSMark Murray 6888fa113e5SMark Murray static int 6898fa113e5SMark Murray is_unique(char *name, char **as, char **ae) 69081cb6ddcSMark Murray { 6918fa113e5SMark Murray char **ap; 6928fa113e5SMark Murray int n; 69381cb6ddcSMark Murray 69481cb6ddcSMark Murray n = strlen(name) + 1; 69581cb6ddcSMark Murray for (ap = as; ap < ae; ap++) 69681cb6ddcSMark Murray if (strncasecmp(*ap, name, n) == 0) 69781cb6ddcSMark Murray return(0); 69881cb6ddcSMark Murray return (1); 69981cb6ddcSMark Murray } 70081cb6ddcSMark Murray 70181cb6ddcSMark Murray #ifdef TERMCAP 70281cb6ddcSMark Murray char termbuf[1024]; 70381cb6ddcSMark Murray 70481cb6ddcSMark Murray /*ARGSUSED*/ 7058fa113e5SMark Murray static int 7068fa113e5SMark Murray setupterm(char *tname, int fd, int *errp) 70781cb6ddcSMark Murray { 70881cb6ddcSMark Murray if (tgetent(termbuf, tname) == 1) { 70981cb6ddcSMark Murray termbuf[1023] = '\0'; 71081cb6ddcSMark Murray if (errp) 71181cb6ddcSMark Murray *errp = 1; 71281cb6ddcSMark Murray return(0); 71381cb6ddcSMark Murray } 71481cb6ddcSMark Murray if (errp) 71581cb6ddcSMark Murray *errp = 0; 71681cb6ddcSMark Murray return(-1); 71781cb6ddcSMark Murray } 71881cb6ddcSMark Murray #else 71981cb6ddcSMark Murray #define termbuf ttytype 72081cb6ddcSMark Murray extern char ttytype[]; 72181cb6ddcSMark Murray #endif 72281cb6ddcSMark Murray 72381cb6ddcSMark Murray int resettermname = 1; 72481cb6ddcSMark Murray 7258fa113e5SMark Murray static const char * 7268fa113e5SMark Murray gettermname(void) 72781cb6ddcSMark Murray { 72881cb6ddcSMark Murray char *tname; 7298fa113e5SMark Murray static const char **tnamep = 0; 7308fa113e5SMark Murray static const char **next; 73181cb6ddcSMark Murray int err; 73281cb6ddcSMark Murray 73381cb6ddcSMark Murray if (resettermname) { 73481cb6ddcSMark Murray resettermname = 0; 73581cb6ddcSMark Murray if (tnamep && tnamep != unknown) 73681cb6ddcSMark Murray free(tnamep); 7378fa113e5SMark Murray if ((tname = env_getvalue("TERM")) && 73881cb6ddcSMark Murray (setupterm(tname, 1, &err) == 0)) { 73981cb6ddcSMark Murray tnamep = mklist(termbuf, tname); 74081cb6ddcSMark Murray } else { 74121f083c0SMark Murray if (tname && (strlen(tname) <= 40)) { 74281cb6ddcSMark Murray unknown[0] = tname; 74381cb6ddcSMark Murray upcase(tname); 74481cb6ddcSMark Murray } else 74581cb6ddcSMark Murray unknown[0] = name_unknown; 74681cb6ddcSMark Murray tnamep = unknown; 74781cb6ddcSMark Murray } 74881cb6ddcSMark Murray next = tnamep; 74981cb6ddcSMark Murray } 75081cb6ddcSMark Murray if (*next == 0) 75181cb6ddcSMark Murray next = tnamep; 75281cb6ddcSMark Murray return(*next++); 75381cb6ddcSMark Murray } 75481cb6ddcSMark Murray /* 75581cb6ddcSMark Murray * suboption() 75681cb6ddcSMark Murray * 75781cb6ddcSMark Murray * Look at the sub-option buffer, and try to be helpful to the other 75881cb6ddcSMark Murray * side. 75981cb6ddcSMark Murray * 76081cb6ddcSMark Murray * Currently we recognize: 76181cb6ddcSMark Murray * 76281cb6ddcSMark Murray * Terminal type, send request. 76381cb6ddcSMark Murray * Terminal speed (send request). 76481cb6ddcSMark Murray * Local flow control (is request). 76581cb6ddcSMark Murray * Linemode 76681cb6ddcSMark Murray */ 76781cb6ddcSMark Murray 76881cb6ddcSMark Murray static void 7698fa113e5SMark Murray suboption(void) 77081cb6ddcSMark Murray { 77181cb6ddcSMark Murray unsigned char subchar; 77281cb6ddcSMark Murray 77381cb6ddcSMark Murray printsub('<', subbuffer, SB_LEN()+2); 77481cb6ddcSMark Murray switch (subchar = SB_GET()) { 77581cb6ddcSMark Murray case TELOPT_TTYPE: 77681cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_TTYPE)) 77781cb6ddcSMark Murray return; 77881cb6ddcSMark Murray if (SB_EOF() || SB_GET() != TELQUAL_SEND) { 77981cb6ddcSMark Murray return; 78081cb6ddcSMark Murray } else { 7818fa113e5SMark Murray const char *name; 78281cb6ddcSMark Murray unsigned char temp[50]; 78381cb6ddcSMark Murray int len; 78481cb6ddcSMark Murray 78581cb6ddcSMark Murray name = gettermname(); 78681cb6ddcSMark Murray len = strlen(name) + 4 + 2; 78781cb6ddcSMark Murray if (len < NETROOM()) { 7888fa113e5SMark Murray sprintf(temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE, 78981cb6ddcSMark Murray TELQUAL_IS, name, IAC, SE); 79081cb6ddcSMark Murray ring_supply_data(&netoring, temp, len); 79181cb6ddcSMark Murray printsub('>', &temp[2], len-2); 79281cb6ddcSMark Murray } else { 79381cb6ddcSMark Murray ExitString("No room in buffer for terminal type.\n", 1); 79481cb6ddcSMark Murray /*NOTREACHED*/ 79581cb6ddcSMark Murray } 79681cb6ddcSMark Murray } 79781cb6ddcSMark Murray break; 79881cb6ddcSMark Murray case TELOPT_TSPEED: 79981cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_TSPEED)) 80081cb6ddcSMark Murray return; 80181cb6ddcSMark Murray if (SB_EOF()) 80281cb6ddcSMark Murray return; 80381cb6ddcSMark Murray if (SB_GET() == TELQUAL_SEND) { 80481cb6ddcSMark Murray long ospeed, ispeed; 80581cb6ddcSMark Murray unsigned char temp[50]; 80681cb6ddcSMark Murray int len; 80781cb6ddcSMark Murray 80881cb6ddcSMark Murray TerminalSpeeds(&ispeed, &ospeed); 80981cb6ddcSMark Murray 81004c426ccSMark Murray sprintf((char *)temp, "%c%c%c%c%ld,%ld%c%c", IAC, SB, TELOPT_TSPEED, 81181cb6ddcSMark Murray TELQUAL_IS, ospeed, ispeed, IAC, SE); 81281cb6ddcSMark Murray len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */ 81381cb6ddcSMark Murray 81481cb6ddcSMark Murray if (len < NETROOM()) { 81581cb6ddcSMark Murray ring_supply_data(&netoring, temp, len); 81681cb6ddcSMark Murray printsub('>', temp+2, len - 2); 81781cb6ddcSMark Murray } 81881cb6ddcSMark Murray /*@*/ else printf("lm_will: not enough room in buffer\n"); 81981cb6ddcSMark Murray } 82081cb6ddcSMark Murray break; 82181cb6ddcSMark Murray case TELOPT_LFLOW: 82281cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_LFLOW)) 82381cb6ddcSMark Murray return; 82481cb6ddcSMark Murray if (SB_EOF()) 82581cb6ddcSMark Murray return; 82681cb6ddcSMark Murray switch(SB_GET()) { 82781cb6ddcSMark Murray case LFLOW_RESTART_ANY: 82881cb6ddcSMark Murray restartany = 1; 82981cb6ddcSMark Murray break; 83081cb6ddcSMark Murray case LFLOW_RESTART_XON: 83181cb6ddcSMark Murray restartany = 0; 83281cb6ddcSMark Murray break; 83381cb6ddcSMark Murray case LFLOW_ON: 83481cb6ddcSMark Murray localflow = 1; 83581cb6ddcSMark Murray break; 83681cb6ddcSMark Murray case LFLOW_OFF: 83781cb6ddcSMark Murray localflow = 0; 83881cb6ddcSMark Murray break; 83981cb6ddcSMark Murray default: 84081cb6ddcSMark Murray return; 84181cb6ddcSMark Murray } 84281cb6ddcSMark Murray setcommandmode(); 84381cb6ddcSMark Murray setconnmode(0); 84481cb6ddcSMark Murray break; 84581cb6ddcSMark Murray 84681cb6ddcSMark Murray case TELOPT_LINEMODE: 84781cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_LINEMODE)) 84881cb6ddcSMark Murray return; 84981cb6ddcSMark Murray if (SB_EOF()) 85081cb6ddcSMark Murray return; 85181cb6ddcSMark Murray switch (SB_GET()) { 85281cb6ddcSMark Murray case WILL: 85381cb6ddcSMark Murray lm_will(subpointer, SB_LEN()); 85481cb6ddcSMark Murray break; 85581cb6ddcSMark Murray case WONT: 85681cb6ddcSMark Murray lm_wont(subpointer, SB_LEN()); 85781cb6ddcSMark Murray break; 85881cb6ddcSMark Murray case DO: 85981cb6ddcSMark Murray lm_do(subpointer, SB_LEN()); 86081cb6ddcSMark Murray break; 86181cb6ddcSMark Murray case DONT: 86281cb6ddcSMark Murray lm_dont(subpointer, SB_LEN()); 86381cb6ddcSMark Murray break; 86481cb6ddcSMark Murray case LM_SLC: 86581cb6ddcSMark Murray slc(subpointer, SB_LEN()); 86681cb6ddcSMark Murray break; 86781cb6ddcSMark Murray case LM_MODE: 86881cb6ddcSMark Murray lm_mode(subpointer, SB_LEN(), 0); 86981cb6ddcSMark Murray break; 87081cb6ddcSMark Murray default: 87181cb6ddcSMark Murray break; 87281cb6ddcSMark Murray } 87381cb6ddcSMark Murray break; 87481cb6ddcSMark Murray 87581cb6ddcSMark Murray #ifdef OLD_ENVIRON 87681cb6ddcSMark Murray case TELOPT_OLD_ENVIRON: 87781cb6ddcSMark Murray #endif 87881cb6ddcSMark Murray case TELOPT_NEW_ENVIRON: 87981cb6ddcSMark Murray if (SB_EOF()) 88081cb6ddcSMark Murray return; 88181cb6ddcSMark Murray switch(SB_PEEK()) { 88281cb6ddcSMark Murray case TELQUAL_IS: 88381cb6ddcSMark Murray case TELQUAL_INFO: 88481cb6ddcSMark Murray if (my_want_state_is_dont(subchar)) 88581cb6ddcSMark Murray return; 88681cb6ddcSMark Murray break; 88781cb6ddcSMark Murray case TELQUAL_SEND: 88881cb6ddcSMark Murray if (my_want_state_is_wont(subchar)) { 88981cb6ddcSMark Murray return; 89081cb6ddcSMark Murray } 89181cb6ddcSMark Murray break; 89281cb6ddcSMark Murray default: 89381cb6ddcSMark Murray return; 89481cb6ddcSMark Murray } 89581cb6ddcSMark Murray env_opt(subpointer, SB_LEN()); 89681cb6ddcSMark Murray break; 89781cb6ddcSMark Murray 89881cb6ddcSMark Murray case TELOPT_XDISPLOC: 89981cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_XDISPLOC)) 90081cb6ddcSMark Murray return; 90181cb6ddcSMark Murray if (SB_EOF()) 90281cb6ddcSMark Murray return; 90381cb6ddcSMark Murray if (SB_GET() == TELQUAL_SEND) { 90481cb6ddcSMark Murray unsigned char temp[50], *dp; 90581cb6ddcSMark Murray int len; 90681cb6ddcSMark Murray 9078fa113e5SMark Murray if ((dp = env_getvalue("DISPLAY")) == NULL || 908579c78c7SKris Kennaway strlen(dp) > sizeof(temp) - 7) { 90981cb6ddcSMark Murray /* 91081cb6ddcSMark Murray * Something happened, we no longer have a DISPLAY 911579c78c7SKris Kennaway * variable. Or it is too long. So, turn off the option. 91281cb6ddcSMark Murray */ 91381cb6ddcSMark Murray send_wont(TELOPT_XDISPLOC, 1); 91481cb6ddcSMark Murray break; 91581cb6ddcSMark Murray } 9168fa113e5SMark Murray snprintf(temp, sizeof(temp), "%c%c%c%c%s%c%c", IAC, SB, 917579c78c7SKris Kennaway TELOPT_XDISPLOC, TELQUAL_IS, dp, IAC, SE); 91881cb6ddcSMark Murray len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */ 91981cb6ddcSMark Murray 92081cb6ddcSMark Murray if (len < NETROOM()) { 92181cb6ddcSMark Murray ring_supply_data(&netoring, temp, len); 92281cb6ddcSMark Murray printsub('>', temp+2, len - 2); 92381cb6ddcSMark Murray } 92481cb6ddcSMark Murray /*@*/ else printf("lm_will: not enough room in buffer\n"); 92581cb6ddcSMark Murray } 92681cb6ddcSMark Murray break; 92781cb6ddcSMark Murray 9288fa113e5SMark Murray #ifdef AUTHENTICATION 92981cb6ddcSMark Murray case TELOPT_AUTHENTICATION: { 93081cb6ddcSMark Murray if (!autologin) 93181cb6ddcSMark Murray break; 93281cb6ddcSMark Murray if (SB_EOF()) 93381cb6ddcSMark Murray return; 93481cb6ddcSMark Murray switch(SB_GET()) { 93581cb6ddcSMark Murray case TELQUAL_IS: 93681cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_AUTHENTICATION)) 93781cb6ddcSMark Murray return; 93881cb6ddcSMark Murray auth_is(subpointer, SB_LEN()); 93981cb6ddcSMark Murray break; 94081cb6ddcSMark Murray case TELQUAL_SEND: 94181cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_AUTHENTICATION)) 94281cb6ddcSMark Murray return; 94381cb6ddcSMark Murray auth_send(subpointer, SB_LEN()); 94481cb6ddcSMark Murray break; 94581cb6ddcSMark Murray case TELQUAL_REPLY: 94681cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_AUTHENTICATION)) 94781cb6ddcSMark Murray return; 94881cb6ddcSMark Murray auth_reply(subpointer, SB_LEN()); 94981cb6ddcSMark Murray break; 95081cb6ddcSMark Murray case TELQUAL_NAME: 95181cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_AUTHENTICATION)) 95281cb6ddcSMark Murray return; 95381cb6ddcSMark Murray auth_name(subpointer, SB_LEN()); 95481cb6ddcSMark Murray break; 95581cb6ddcSMark Murray } 95681cb6ddcSMark Murray } 95781cb6ddcSMark Murray break; 95881cb6ddcSMark Murray #endif 95981cb6ddcSMark Murray #ifdef ENCRYPTION 96081cb6ddcSMark Murray case TELOPT_ENCRYPT: 96181cb6ddcSMark Murray if (SB_EOF()) 96281cb6ddcSMark Murray return; 96381cb6ddcSMark Murray switch(SB_GET()) { 96481cb6ddcSMark Murray case ENCRYPT_START: 96581cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 96681cb6ddcSMark Murray return; 96781cb6ddcSMark Murray encrypt_start(subpointer, SB_LEN()); 96881cb6ddcSMark Murray break; 96981cb6ddcSMark Murray case ENCRYPT_END: 97081cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 97181cb6ddcSMark Murray return; 97281cb6ddcSMark Murray encrypt_end(); 97381cb6ddcSMark Murray break; 97481cb6ddcSMark Murray case ENCRYPT_SUPPORT: 97581cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 97681cb6ddcSMark Murray return; 97781cb6ddcSMark Murray encrypt_support(subpointer, SB_LEN()); 97881cb6ddcSMark Murray break; 97981cb6ddcSMark Murray case ENCRYPT_REQSTART: 98081cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 98181cb6ddcSMark Murray return; 98281cb6ddcSMark Murray encrypt_request_start(subpointer, SB_LEN()); 98381cb6ddcSMark Murray break; 98481cb6ddcSMark Murray case ENCRYPT_REQEND: 98581cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 98681cb6ddcSMark Murray return; 98781cb6ddcSMark Murray /* 98881cb6ddcSMark Murray * We can always send an REQEND so that we cannot 98981cb6ddcSMark Murray * get stuck encrypting. We should only get this 99081cb6ddcSMark Murray * if we have been able to get in the correct mode 99181cb6ddcSMark Murray * anyhow. 99281cb6ddcSMark Murray */ 99381cb6ddcSMark Murray encrypt_request_end(); 99481cb6ddcSMark Murray break; 99581cb6ddcSMark Murray case ENCRYPT_IS: 99681cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 99781cb6ddcSMark Murray return; 99881cb6ddcSMark Murray encrypt_is(subpointer, SB_LEN()); 99981cb6ddcSMark Murray break; 100081cb6ddcSMark Murray case ENCRYPT_REPLY: 100181cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 100281cb6ddcSMark Murray return; 100381cb6ddcSMark Murray encrypt_reply(subpointer, SB_LEN()); 100481cb6ddcSMark Murray break; 100581cb6ddcSMark Murray case ENCRYPT_ENC_KEYID: 100681cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_ENCRYPT)) 100781cb6ddcSMark Murray return; 100881cb6ddcSMark Murray encrypt_enc_keyid(subpointer, SB_LEN()); 100981cb6ddcSMark Murray break; 101081cb6ddcSMark Murray case ENCRYPT_DEC_KEYID: 101181cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_ENCRYPT)) 101281cb6ddcSMark Murray return; 101381cb6ddcSMark Murray encrypt_dec_keyid(subpointer, SB_LEN()); 101481cb6ddcSMark Murray break; 101581cb6ddcSMark Murray default: 101681cb6ddcSMark Murray break; 101781cb6ddcSMark Murray } 101881cb6ddcSMark Murray break; 101981cb6ddcSMark Murray #endif /* ENCRYPTION */ 102081cb6ddcSMark Murray default: 102181cb6ddcSMark Murray break; 102281cb6ddcSMark Murray } 102381cb6ddcSMark Murray } 102481cb6ddcSMark Murray 102581cb6ddcSMark Murray static unsigned char str_lm[] = { IAC, SB, TELOPT_LINEMODE, 0, 0, IAC, SE }; 102681cb6ddcSMark Murray 102781cb6ddcSMark Murray void 10288fa113e5SMark Murray lm_will(unsigned char *cmd, int len) 102981cb6ddcSMark Murray { 103081cb6ddcSMark Murray if (len < 1) { 103181cb6ddcSMark Murray /*@*/ printf("lm_will: no command!!!\n"); /* Should not happen... */ 103281cb6ddcSMark Murray return; 103381cb6ddcSMark Murray } 103481cb6ddcSMark Murray switch(cmd[0]) { 103581cb6ddcSMark Murray case LM_FORWARDMASK: /* We shouldn't ever get this... */ 103681cb6ddcSMark Murray default: 103781cb6ddcSMark Murray str_lm[3] = DONT; 103881cb6ddcSMark Murray str_lm[4] = cmd[0]; 10398fa113e5SMark Murray if (NETROOM() > (int)sizeof(str_lm)) { 104081cb6ddcSMark Murray ring_supply_data(&netoring, str_lm, sizeof(str_lm)); 104181cb6ddcSMark Murray printsub('>', &str_lm[2], sizeof(str_lm)-2); 104281cb6ddcSMark Murray } 104381cb6ddcSMark Murray /*@*/ else printf("lm_will: not enough room in buffer\n"); 104481cb6ddcSMark Murray break; 104581cb6ddcSMark Murray } 104681cb6ddcSMark Murray } 104781cb6ddcSMark Murray 104881cb6ddcSMark Murray void 10498fa113e5SMark Murray lm_wont(unsigned char *cmd, int len) 105081cb6ddcSMark Murray { 105181cb6ddcSMark Murray if (len < 1) { 105281cb6ddcSMark Murray /*@*/ printf("lm_wont: no command!!!\n"); /* Should not happen... */ 105381cb6ddcSMark Murray return; 105481cb6ddcSMark Murray } 105581cb6ddcSMark Murray switch(cmd[0]) { 105681cb6ddcSMark Murray case LM_FORWARDMASK: /* We shouldn't ever get this... */ 105781cb6ddcSMark Murray default: 105881cb6ddcSMark Murray /* We are always DONT, so don't respond */ 105981cb6ddcSMark Murray return; 106081cb6ddcSMark Murray } 106181cb6ddcSMark Murray } 106281cb6ddcSMark Murray 106381cb6ddcSMark Murray void 10648fa113e5SMark Murray lm_do(unsigned char *cmd, int len) 106581cb6ddcSMark Murray { 106681cb6ddcSMark Murray if (len < 1) { 106781cb6ddcSMark Murray /*@*/ printf("lm_do: no command!!!\n"); /* Should not happen... */ 106881cb6ddcSMark Murray return; 106981cb6ddcSMark Murray } 107081cb6ddcSMark Murray switch(cmd[0]) { 107181cb6ddcSMark Murray case LM_FORWARDMASK: 107281cb6ddcSMark Murray default: 107381cb6ddcSMark Murray str_lm[3] = WONT; 107481cb6ddcSMark Murray str_lm[4] = cmd[0]; 10758fa113e5SMark Murray if (NETROOM() > (int)sizeof(str_lm)) { 107681cb6ddcSMark Murray ring_supply_data(&netoring, str_lm, sizeof(str_lm)); 107781cb6ddcSMark Murray printsub('>', &str_lm[2], sizeof(str_lm)-2); 107881cb6ddcSMark Murray } 107981cb6ddcSMark Murray /*@*/ else printf("lm_do: not enough room in buffer\n"); 108081cb6ddcSMark Murray break; 108181cb6ddcSMark Murray } 108281cb6ddcSMark Murray } 108381cb6ddcSMark Murray 108481cb6ddcSMark Murray void 10858fa113e5SMark Murray lm_dont(unsigned char *cmd, int len) 108681cb6ddcSMark Murray { 108781cb6ddcSMark Murray if (len < 1) { 108881cb6ddcSMark Murray /*@*/ printf("lm_dont: no command!!!\n"); /* Should not happen... */ 108981cb6ddcSMark Murray return; 109081cb6ddcSMark Murray } 109181cb6ddcSMark Murray switch(cmd[0]) { 109281cb6ddcSMark Murray case LM_FORWARDMASK: 109381cb6ddcSMark Murray default: 109481cb6ddcSMark Murray /* we are always WONT, so don't respond */ 109581cb6ddcSMark Murray break; 109681cb6ddcSMark Murray } 109781cb6ddcSMark Murray } 109881cb6ddcSMark Murray 109981cb6ddcSMark Murray static unsigned char str_lm_mode[] = { 110081cb6ddcSMark Murray IAC, SB, TELOPT_LINEMODE, LM_MODE, 0, IAC, SE 110181cb6ddcSMark Murray }; 110281cb6ddcSMark Murray 110381cb6ddcSMark Murray void 11048fa113e5SMark Murray lm_mode(unsigned char *cmd, int len, int init) 110581cb6ddcSMark Murray { 110681cb6ddcSMark Murray if (len != 1) 110781cb6ddcSMark Murray return; 110881cb6ddcSMark Murray if ((linemode&MODE_MASK&~MODE_ACK) == *cmd) 110981cb6ddcSMark Murray return; 111081cb6ddcSMark Murray if (*cmd&MODE_ACK) 111181cb6ddcSMark Murray return; 111281cb6ddcSMark Murray linemode = *cmd&(MODE_MASK&~MODE_ACK); 111381cb6ddcSMark Murray str_lm_mode[4] = linemode; 111481cb6ddcSMark Murray if (!init) 111581cb6ddcSMark Murray str_lm_mode[4] |= MODE_ACK; 11168fa113e5SMark Murray if (NETROOM() > (int)sizeof(str_lm_mode)) { 111781cb6ddcSMark Murray ring_supply_data(&netoring, str_lm_mode, sizeof(str_lm_mode)); 111881cb6ddcSMark Murray printsub('>', &str_lm_mode[2], sizeof(str_lm_mode)-2); 111981cb6ddcSMark Murray } 112081cb6ddcSMark Murray /*@*/ else printf("lm_mode: not enough room in buffer\n"); 112181cb6ddcSMark Murray setconnmode(0); /* set changed mode */ 112281cb6ddcSMark Murray } 112381cb6ddcSMark Murray 1124ad11def5SEnji Cooper 112581cb6ddcSMark Murray 112681cb6ddcSMark Murray /* 112781cb6ddcSMark Murray * slc() 112881cb6ddcSMark Murray * Handle special character suboption of LINEMODE. 112981cb6ddcSMark Murray */ 113081cb6ddcSMark Murray 113181cb6ddcSMark Murray struct spc { 113281cb6ddcSMark Murray cc_t val; 113381cb6ddcSMark Murray cc_t *valp; 113481cb6ddcSMark Murray char flags; /* Current flags & level */ 113581cb6ddcSMark Murray char mylevel; /* Maximum level & flags */ 113681cb6ddcSMark Murray } spc_data[NSLC+1]; 113781cb6ddcSMark Murray 113881cb6ddcSMark Murray #define SLC_IMPORT 0 113981cb6ddcSMark Murray #define SLC_EXPORT 1 114081cb6ddcSMark Murray #define SLC_RVALUE 2 114181cb6ddcSMark Murray static int slc_mode = SLC_EXPORT; 114281cb6ddcSMark Murray 114381cb6ddcSMark Murray void 11448fa113e5SMark Murray slc_init(void) 114581cb6ddcSMark Murray { 11468fa113e5SMark Murray struct spc *spcp; 114781cb6ddcSMark Murray 114881cb6ddcSMark Murray localchars = 1; 114981cb6ddcSMark Murray for (spcp = spc_data; spcp < &spc_data[NSLC+1]; spcp++) { 115081cb6ddcSMark Murray spcp->val = 0; 115181cb6ddcSMark Murray spcp->valp = 0; 115281cb6ddcSMark Murray spcp->flags = spcp->mylevel = SLC_NOSUPPORT; 115381cb6ddcSMark Murray } 115481cb6ddcSMark Murray 115581cb6ddcSMark Murray #define initfunc(func, flags) { \ 115681cb6ddcSMark Murray spcp = &spc_data[func]; \ 115704c426ccSMark Murray if ((spcp->valp = tcval(func))) { \ 115881cb6ddcSMark Murray spcp->val = *spcp->valp; \ 115981cb6ddcSMark Murray spcp->mylevel = SLC_VARIABLE|flags; \ 116081cb6ddcSMark Murray } else { \ 116181cb6ddcSMark Murray spcp->val = 0; \ 116281cb6ddcSMark Murray spcp->mylevel = SLC_DEFAULT; \ 116381cb6ddcSMark Murray } \ 116481cb6ddcSMark Murray } 116581cb6ddcSMark Murray 116681cb6ddcSMark Murray initfunc(SLC_SYNCH, 0); 116781cb6ddcSMark Murray /* No BRK */ 116881cb6ddcSMark Murray initfunc(SLC_AO, 0); 116981cb6ddcSMark Murray initfunc(SLC_AYT, 0); 117081cb6ddcSMark Murray /* No EOR */ 117181cb6ddcSMark Murray initfunc(SLC_ABORT, SLC_FLUSHIN|SLC_FLUSHOUT); 117281cb6ddcSMark Murray initfunc(SLC_EOF, 0); 117381cb6ddcSMark Murray #ifndef SYSV_TERMIO 117481cb6ddcSMark Murray initfunc(SLC_SUSP, SLC_FLUSHIN); 117581cb6ddcSMark Murray #endif 117681cb6ddcSMark Murray initfunc(SLC_EC, 0); 117781cb6ddcSMark Murray initfunc(SLC_EL, 0); 117881cb6ddcSMark Murray #ifndef SYSV_TERMIO 117981cb6ddcSMark Murray initfunc(SLC_EW, 0); 118081cb6ddcSMark Murray initfunc(SLC_RP, 0); 118181cb6ddcSMark Murray initfunc(SLC_LNEXT, 0); 118281cb6ddcSMark Murray #endif 118381cb6ddcSMark Murray initfunc(SLC_XON, 0); 118481cb6ddcSMark Murray initfunc(SLC_XOFF, 0); 118581cb6ddcSMark Murray #ifdef SYSV_TERMIO 118681cb6ddcSMark Murray spc_data[SLC_XON].mylevel = SLC_CANTCHANGE; 118781cb6ddcSMark Murray spc_data[SLC_XOFF].mylevel = SLC_CANTCHANGE; 118881cb6ddcSMark Murray #endif 118981cb6ddcSMark Murray initfunc(SLC_FORW1, 0); 119081cb6ddcSMark Murray #ifdef USE_TERMIO 119181cb6ddcSMark Murray initfunc(SLC_FORW2, 0); 119281cb6ddcSMark Murray /* No FORW2 */ 119381cb6ddcSMark Murray #endif 119481cb6ddcSMark Murray 119581cb6ddcSMark Murray initfunc(SLC_IP, SLC_FLUSHIN|SLC_FLUSHOUT); 119681cb6ddcSMark Murray #undef initfunc 119781cb6ddcSMark Murray 119881cb6ddcSMark Murray if (slc_mode == SLC_EXPORT) 119981cb6ddcSMark Murray slc_export(); 120081cb6ddcSMark Murray else 120181cb6ddcSMark Murray slc_import(1); 120281cb6ddcSMark Murray 120381cb6ddcSMark Murray } 120481cb6ddcSMark Murray 120581cb6ddcSMark Murray void 12068fa113e5SMark Murray slcstate(void) 120781cb6ddcSMark Murray { 120881cb6ddcSMark Murray printf("Special characters are %s values\n", 120981cb6ddcSMark Murray slc_mode == SLC_IMPORT ? "remote default" : 121081cb6ddcSMark Murray slc_mode == SLC_EXPORT ? "local" : 121181cb6ddcSMark Murray "remote"); 121281cb6ddcSMark Murray } 121381cb6ddcSMark Murray 121481cb6ddcSMark Murray void 12158fa113e5SMark Murray slc_mode_export(void) 121681cb6ddcSMark Murray { 121781cb6ddcSMark Murray slc_mode = SLC_EXPORT; 121881cb6ddcSMark Murray if (my_state_is_will(TELOPT_LINEMODE)) 121981cb6ddcSMark Murray slc_export(); 122081cb6ddcSMark Murray } 122181cb6ddcSMark Murray 122281cb6ddcSMark Murray void 12238fa113e5SMark Murray slc_mode_import(int def) 122481cb6ddcSMark Murray { 122581cb6ddcSMark Murray slc_mode = def ? SLC_IMPORT : SLC_RVALUE; 122681cb6ddcSMark Murray if (my_state_is_will(TELOPT_LINEMODE)) 122781cb6ddcSMark Murray slc_import(def); 122881cb6ddcSMark Murray } 122981cb6ddcSMark Murray 123081cb6ddcSMark Murray unsigned char slc_import_val[] = { 123181cb6ddcSMark Murray IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_VARIABLE, 0, IAC, SE 123281cb6ddcSMark Murray }; 123381cb6ddcSMark Murray unsigned char slc_import_def[] = { 123481cb6ddcSMark Murray IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_DEFAULT, 0, IAC, SE 123581cb6ddcSMark Murray }; 123681cb6ddcSMark Murray 123781cb6ddcSMark Murray void 12388fa113e5SMark Murray slc_import(int def) 123981cb6ddcSMark Murray { 12408fa113e5SMark Murray if (NETROOM() > (int)sizeof(slc_import_val)) { 124181cb6ddcSMark Murray if (def) { 124281cb6ddcSMark Murray ring_supply_data(&netoring, slc_import_def, sizeof(slc_import_def)); 124381cb6ddcSMark Murray printsub('>', &slc_import_def[2], sizeof(slc_import_def)-2); 124481cb6ddcSMark Murray } else { 124581cb6ddcSMark Murray ring_supply_data(&netoring, slc_import_val, sizeof(slc_import_val)); 124681cb6ddcSMark Murray printsub('>', &slc_import_val[2], sizeof(slc_import_val)-2); 124781cb6ddcSMark Murray } 124881cb6ddcSMark Murray } 124981cb6ddcSMark Murray /*@*/ else printf("slc_import: not enough room\n"); 125081cb6ddcSMark Murray } 125181cb6ddcSMark Murray 125281cb6ddcSMark Murray void 12538fa113e5SMark Murray slc_export(void) 125481cb6ddcSMark Murray { 12558fa113e5SMark Murray struct spc *spcp; 125681cb6ddcSMark Murray 125781cb6ddcSMark Murray TerminalDefaultChars(); 125881cb6ddcSMark Murray 125981cb6ddcSMark Murray slc_start_reply(); 126081cb6ddcSMark Murray for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { 126181cb6ddcSMark Murray if (spcp->mylevel != SLC_NOSUPPORT) { 126281cb6ddcSMark Murray if (spcp->val == (cc_t)(_POSIX_VDISABLE)) 126381cb6ddcSMark Murray spcp->flags = SLC_NOSUPPORT; 126481cb6ddcSMark Murray else 126581cb6ddcSMark Murray spcp->flags = spcp->mylevel; 126681cb6ddcSMark Murray if (spcp->valp) 126781cb6ddcSMark Murray spcp->val = *spcp->valp; 126881cb6ddcSMark Murray slc_add_reply(spcp - spc_data, spcp->flags, spcp->val); 126981cb6ddcSMark Murray } 127081cb6ddcSMark Murray } 127181cb6ddcSMark Murray slc_end_reply(); 127281cb6ddcSMark Murray (void)slc_update(); 127381cb6ddcSMark Murray setconnmode(1); /* Make sure the character values are set */ 127481cb6ddcSMark Murray } 127581cb6ddcSMark Murray 127681cb6ddcSMark Murray void 12778fa113e5SMark Murray slc(unsigned char *cp, int len) 127881cb6ddcSMark Murray { 12798fa113e5SMark Murray struct spc *spcp; 12808fa113e5SMark Murray int func,level; 128181cb6ddcSMark Murray 128281cb6ddcSMark Murray slc_start_reply(); 128381cb6ddcSMark Murray 128481cb6ddcSMark Murray for (; len >= 3; len -=3, cp +=3) { 128581cb6ddcSMark Murray 128681cb6ddcSMark Murray func = cp[SLC_FUNC]; 128781cb6ddcSMark Murray 128881cb6ddcSMark Murray if (func == 0) { 128981cb6ddcSMark Murray /* 129081cb6ddcSMark Murray * Client side: always ignore 0 function. 129181cb6ddcSMark Murray */ 129281cb6ddcSMark Murray continue; 129381cb6ddcSMark Murray } 129481cb6ddcSMark Murray if (func > NSLC) { 129581cb6ddcSMark Murray if ((cp[SLC_FLAGS] & SLC_LEVELBITS) != SLC_NOSUPPORT) 129681cb6ddcSMark Murray slc_add_reply(func, SLC_NOSUPPORT, 0); 129781cb6ddcSMark Murray continue; 129881cb6ddcSMark Murray } 129981cb6ddcSMark Murray 130081cb6ddcSMark Murray spcp = &spc_data[func]; 130181cb6ddcSMark Murray 130281cb6ddcSMark Murray level = cp[SLC_FLAGS]&(SLC_LEVELBITS|SLC_ACK); 130381cb6ddcSMark Murray 130481cb6ddcSMark Murray if ((cp[SLC_VALUE] == (unsigned char)spcp->val) && 130581cb6ddcSMark Murray ((level&SLC_LEVELBITS) == (spcp->flags&SLC_LEVELBITS))) { 130681cb6ddcSMark Murray continue; 130781cb6ddcSMark Murray } 130881cb6ddcSMark Murray 130981cb6ddcSMark Murray if (level == (SLC_DEFAULT|SLC_ACK)) { 131081cb6ddcSMark Murray /* 131181cb6ddcSMark Murray * This is an error condition, the SLC_ACK 131281cb6ddcSMark Murray * bit should never be set for the SLC_DEFAULT 131381cb6ddcSMark Murray * level. Our best guess to recover is to 131481cb6ddcSMark Murray * ignore the SLC_ACK bit. 131581cb6ddcSMark Murray */ 131681cb6ddcSMark Murray cp[SLC_FLAGS] &= ~SLC_ACK; 131781cb6ddcSMark Murray } 131881cb6ddcSMark Murray 131981cb6ddcSMark Murray if (level == ((spcp->flags&SLC_LEVELBITS)|SLC_ACK)) { 132081cb6ddcSMark Murray spcp->val = (cc_t)cp[SLC_VALUE]; 132181cb6ddcSMark Murray spcp->flags = cp[SLC_FLAGS]; /* include SLC_ACK */ 132281cb6ddcSMark Murray continue; 132381cb6ddcSMark Murray } 132481cb6ddcSMark Murray 132581cb6ddcSMark Murray level &= ~SLC_ACK; 132681cb6ddcSMark Murray 132781cb6ddcSMark Murray if (level <= (spcp->mylevel&SLC_LEVELBITS)) { 132881cb6ddcSMark Murray spcp->flags = cp[SLC_FLAGS]|SLC_ACK; 132981cb6ddcSMark Murray spcp->val = (cc_t)cp[SLC_VALUE]; 133081cb6ddcSMark Murray } 133181cb6ddcSMark Murray if (level == SLC_DEFAULT) { 133281cb6ddcSMark Murray if ((spcp->mylevel&SLC_LEVELBITS) != SLC_DEFAULT) 133381cb6ddcSMark Murray spcp->flags = spcp->mylevel; 133481cb6ddcSMark Murray else 133581cb6ddcSMark Murray spcp->flags = SLC_NOSUPPORT; 133681cb6ddcSMark Murray } 133781cb6ddcSMark Murray slc_add_reply(func, spcp->flags, spcp->val); 133881cb6ddcSMark Murray } 133981cb6ddcSMark Murray slc_end_reply(); 134081cb6ddcSMark Murray if (slc_update()) 134181cb6ddcSMark Murray setconnmode(1); /* set the new character values */ 134281cb6ddcSMark Murray } 134381cb6ddcSMark Murray 134481cb6ddcSMark Murray void 13458fa113e5SMark Murray slc_check(void) 134681cb6ddcSMark Murray { 13478fa113e5SMark Murray struct spc *spcp; 134881cb6ddcSMark Murray 134981cb6ddcSMark Murray slc_start_reply(); 135081cb6ddcSMark Murray for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { 135181cb6ddcSMark Murray if (spcp->valp && spcp->val != *spcp->valp) { 135281cb6ddcSMark Murray spcp->val = *spcp->valp; 135381cb6ddcSMark Murray if (spcp->val == (cc_t)(_POSIX_VDISABLE)) 135481cb6ddcSMark Murray spcp->flags = SLC_NOSUPPORT; 135581cb6ddcSMark Murray else 135681cb6ddcSMark Murray spcp->flags = spcp->mylevel; 135781cb6ddcSMark Murray slc_add_reply(spcp - spc_data, spcp->flags, spcp->val); 135881cb6ddcSMark Murray } 135981cb6ddcSMark Murray } 136081cb6ddcSMark Murray slc_end_reply(); 136181cb6ddcSMark Murray setconnmode(1); 136281cb6ddcSMark Murray } 136381cb6ddcSMark Murray 136481cb6ddcSMark Murray unsigned char slc_reply[128]; 136514aab889SJacques Vidrine unsigned char const * const slc_reply_eom = &slc_reply[sizeof(slc_reply)]; 136681cb6ddcSMark Murray unsigned char *slc_replyp; 136781cb6ddcSMark Murray 136881cb6ddcSMark Murray void 13698fa113e5SMark Murray slc_start_reply(void) 137081cb6ddcSMark Murray { 137181cb6ddcSMark Murray slc_replyp = slc_reply; 137281cb6ddcSMark Murray *slc_replyp++ = IAC; 137381cb6ddcSMark Murray *slc_replyp++ = SB; 137481cb6ddcSMark Murray *slc_replyp++ = TELOPT_LINEMODE; 137581cb6ddcSMark Murray *slc_replyp++ = LM_SLC; 137681cb6ddcSMark Murray } 137781cb6ddcSMark Murray 137881cb6ddcSMark Murray void 13798fa113e5SMark Murray slc_add_reply(unsigned char func, unsigned char flags, cc_t value) 138081cb6ddcSMark Murray { 138114aab889SJacques Vidrine /* A sequence of up to 6 bytes my be written for this member of the SLC 138214aab889SJacques Vidrine * suboption list by this function. The end of negotiation command, 138314aab889SJacques Vidrine * which is written by slc_end_reply(), will require 2 additional 138414aab889SJacques Vidrine * bytes. Do not proceed unless there is sufficient space for these 138514aab889SJacques Vidrine * items. 138614aab889SJacques Vidrine */ 138714aab889SJacques Vidrine if (&slc_replyp[6+2] > slc_reply_eom) 138814aab889SJacques Vidrine return; 138981cb6ddcSMark Murray if ((*slc_replyp++ = func) == IAC) 139081cb6ddcSMark Murray *slc_replyp++ = IAC; 139181cb6ddcSMark Murray if ((*slc_replyp++ = flags) == IAC) 139281cb6ddcSMark Murray *slc_replyp++ = IAC; 139381cb6ddcSMark Murray if ((*slc_replyp++ = (unsigned char)value) == IAC) 139481cb6ddcSMark Murray *slc_replyp++ = IAC; 139581cb6ddcSMark Murray } 139681cb6ddcSMark Murray 139781cb6ddcSMark Murray void 13988fa113e5SMark Murray slc_end_reply(void) 139981cb6ddcSMark Murray { 14008fa113e5SMark Murray int len; 140181cb6ddcSMark Murray 140214aab889SJacques Vidrine /* The end of negotiation command requires 2 bytes. */ 140314aab889SJacques Vidrine if (&slc_replyp[2] > slc_reply_eom) 140414aab889SJacques Vidrine return; 140581cb6ddcSMark Murray *slc_replyp++ = IAC; 140681cb6ddcSMark Murray *slc_replyp++ = SE; 140781cb6ddcSMark Murray len = slc_replyp - slc_reply; 140881cb6ddcSMark Murray if (len <= 6) 140981cb6ddcSMark Murray return; 141081cb6ddcSMark Murray if (NETROOM() > len) { 141181cb6ddcSMark Murray ring_supply_data(&netoring, slc_reply, slc_replyp - slc_reply); 141281cb6ddcSMark Murray printsub('>', &slc_reply[2], slc_replyp - slc_reply - 2); 141381cb6ddcSMark Murray } 141481cb6ddcSMark Murray /*@*/else printf("slc_end_reply: not enough room\n"); 141581cb6ddcSMark Murray } 141681cb6ddcSMark Murray 141781cb6ddcSMark Murray int 14188fa113e5SMark Murray slc_update(void) 141981cb6ddcSMark Murray { 14208fa113e5SMark Murray struct spc *spcp; 142181cb6ddcSMark Murray int need_update = 0; 142281cb6ddcSMark Murray 142381cb6ddcSMark Murray for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) { 142481cb6ddcSMark Murray if (!(spcp->flags&SLC_ACK)) 142581cb6ddcSMark Murray continue; 142681cb6ddcSMark Murray spcp->flags &= ~SLC_ACK; 142781cb6ddcSMark Murray if (spcp->valp && (*spcp->valp != spcp->val)) { 142881cb6ddcSMark Murray *spcp->valp = spcp->val; 142981cb6ddcSMark Murray need_update = 1; 143081cb6ddcSMark Murray } 143181cb6ddcSMark Murray } 143281cb6ddcSMark Murray return(need_update); 143381cb6ddcSMark Murray } 143481cb6ddcSMark Murray 143581cb6ddcSMark Murray #ifdef OLD_ENVIRON 143681cb6ddcSMark Murray # ifdef ENV_HACK 143781cb6ddcSMark Murray /* 143881cb6ddcSMark Murray * Earlier version of telnet/telnetd from the BSD code had 143981cb6ddcSMark Murray * the definitions of VALUE and VAR reversed. To ensure 144081cb6ddcSMark Murray * maximum interoperability, we assume that the server is 144181cb6ddcSMark Murray * an older BSD server, until proven otherwise. The newer 144281cb6ddcSMark Murray * BSD servers should be able to handle either definition, 144381cb6ddcSMark Murray * so it is better to use the wrong values if we don't 144481cb6ddcSMark Murray * know what type of server it is. 144581cb6ddcSMark Murray */ 144681cb6ddcSMark Murray int env_auto = 1; 144781cb6ddcSMark Murray int old_env_var = OLD_ENV_VAR; 144881cb6ddcSMark Murray int old_env_value = OLD_ENV_VALUE; 144981cb6ddcSMark Murray # else 145081cb6ddcSMark Murray # define old_env_var OLD_ENV_VAR 145181cb6ddcSMark Murray # define old_env_value OLD_ENV_VALUE 145281cb6ddcSMark Murray # endif 145381cb6ddcSMark Murray #endif 145481cb6ddcSMark Murray 145581cb6ddcSMark Murray void 14568fa113e5SMark Murray env_opt(unsigned char *buf, int len) 145781cb6ddcSMark Murray { 14588fa113e5SMark Murray unsigned char *ep = 0, *epc = 0; 14598fa113e5SMark Murray int i; 146081cb6ddcSMark Murray 146181cb6ddcSMark Murray switch(buf[0]&0xff) { 146281cb6ddcSMark Murray case TELQUAL_SEND: 146381cb6ddcSMark Murray env_opt_start(); 146481cb6ddcSMark Murray if (len == 1) { 146581cb6ddcSMark Murray env_opt_add(NULL); 146681cb6ddcSMark Murray } else for (i = 1; i < len; i++) { 146781cb6ddcSMark Murray switch (buf[i]&0xff) { 146881cb6ddcSMark Murray #ifdef OLD_ENVIRON 146981cb6ddcSMark Murray case OLD_ENV_VAR: 147081cb6ddcSMark Murray # ifdef ENV_HACK 147181cb6ddcSMark Murray if (telopt_environ == TELOPT_OLD_ENVIRON 147281cb6ddcSMark Murray && env_auto) { 147381cb6ddcSMark Murray /* Server has the same definitions */ 147481cb6ddcSMark Murray old_env_var = OLD_ENV_VAR; 147581cb6ddcSMark Murray old_env_value = OLD_ENV_VALUE; 147681cb6ddcSMark Murray } 147781cb6ddcSMark Murray /* FALLTHROUGH */ 147881cb6ddcSMark Murray # endif 147981cb6ddcSMark Murray case OLD_ENV_VALUE: 148081cb6ddcSMark Murray /* 148181cb6ddcSMark Murray * Although OLD_ENV_VALUE is not legal, we will 148281cb6ddcSMark Murray * still recognize it, just in case it is an 148381cb6ddcSMark Murray * old server that has VAR & VALUE mixed up... 148481cb6ddcSMark Murray */ 148581cb6ddcSMark Murray /* FALLTHROUGH */ 148681cb6ddcSMark Murray #else 148781cb6ddcSMark Murray case NEW_ENV_VAR: 148881cb6ddcSMark Murray #endif 148981cb6ddcSMark Murray case ENV_USERVAR: 149081cb6ddcSMark Murray if (ep) { 149181cb6ddcSMark Murray *epc = 0; 149281cb6ddcSMark Murray env_opt_add(ep); 149381cb6ddcSMark Murray } 149481cb6ddcSMark Murray ep = epc = &buf[i+1]; 149581cb6ddcSMark Murray break; 149681cb6ddcSMark Murray case ENV_ESC: 149781cb6ddcSMark Murray i++; 149881cb6ddcSMark Murray /*FALLTHROUGH*/ 149981cb6ddcSMark Murray default: 150081cb6ddcSMark Murray if (epc) 150181cb6ddcSMark Murray *epc++ = buf[i]; 150281cb6ddcSMark Murray break; 150381cb6ddcSMark Murray } 150481cb6ddcSMark Murray } 150581cb6ddcSMark Murray if (ep) { 150681cb6ddcSMark Murray *epc = 0; 150781cb6ddcSMark Murray env_opt_add(ep); 150881cb6ddcSMark Murray } 150981cb6ddcSMark Murray env_opt_end(1); 151081cb6ddcSMark Murray break; 151181cb6ddcSMark Murray 151281cb6ddcSMark Murray case TELQUAL_IS: 151381cb6ddcSMark Murray case TELQUAL_INFO: 151481cb6ddcSMark Murray /* Ignore for now. We shouldn't get it anyway. */ 151581cb6ddcSMark Murray break; 151681cb6ddcSMark Murray 151781cb6ddcSMark Murray default: 151881cb6ddcSMark Murray break; 151981cb6ddcSMark Murray } 152081cb6ddcSMark Murray } 152181cb6ddcSMark Murray 152214aab889SJacques Vidrine #define OPT_REPLY_SIZE (2 * SUBBUFSIZE) 152314aab889SJacques Vidrine unsigned char *opt_reply = NULL; 152481cb6ddcSMark Murray unsigned char *opt_replyp; 152581cb6ddcSMark Murray unsigned char *opt_replyend; 152681cb6ddcSMark Murray 152781cb6ddcSMark Murray void 15288fa113e5SMark Murray env_opt_start(void) 152981cb6ddcSMark Murray { 153081cb6ddcSMark Murray if (opt_reply) 153181cb6ddcSMark Murray opt_reply = (unsigned char *)realloc(opt_reply, OPT_REPLY_SIZE); 153281cb6ddcSMark Murray else 153381cb6ddcSMark Murray opt_reply = (unsigned char *)malloc(OPT_REPLY_SIZE); 153481cb6ddcSMark Murray if (opt_reply == NULL) { 153581cb6ddcSMark Murray /*@*/ printf("env_opt_start: malloc()/realloc() failed!!!\n"); 153681cb6ddcSMark Murray opt_reply = opt_replyp = opt_replyend = NULL; 153781cb6ddcSMark Murray return; 153881cb6ddcSMark Murray } 153981cb6ddcSMark Murray opt_replyp = opt_reply; 154081cb6ddcSMark Murray opt_replyend = opt_reply + OPT_REPLY_SIZE; 154181cb6ddcSMark Murray *opt_replyp++ = IAC; 154281cb6ddcSMark Murray *opt_replyp++ = SB; 154381cb6ddcSMark Murray *opt_replyp++ = telopt_environ; 154481cb6ddcSMark Murray *opt_replyp++ = TELQUAL_IS; 154581cb6ddcSMark Murray } 154681cb6ddcSMark Murray 154781cb6ddcSMark Murray void 15488fa113e5SMark Murray env_opt_start_info(void) 154981cb6ddcSMark Murray { 155081cb6ddcSMark Murray env_opt_start(); 155181cb6ddcSMark Murray if (opt_replyp) 155281cb6ddcSMark Murray opt_replyp[-1] = TELQUAL_INFO; 155381cb6ddcSMark Murray } 155481cb6ddcSMark Murray 155581cb6ddcSMark Murray void 15568fa113e5SMark Murray env_opt_add(unsigned char *ep) 155781cb6ddcSMark Murray { 15588fa113e5SMark Murray unsigned char *vp, c; 155981cb6ddcSMark Murray 156081cb6ddcSMark Murray if (opt_reply == NULL) /*XXX*/ 156181cb6ddcSMark Murray return; /*XXX*/ 156281cb6ddcSMark Murray 156381cb6ddcSMark Murray if (ep == NULL || *ep == '\0') { 156481cb6ddcSMark Murray /* Send user defined variables first. */ 156581cb6ddcSMark Murray env_default(1, 0); 156604c426ccSMark Murray while ((ep = env_default(0, 0))) 156781cb6ddcSMark Murray env_opt_add(ep); 156881cb6ddcSMark Murray 156981cb6ddcSMark Murray /* Now add the list of well know variables. */ 157081cb6ddcSMark Murray env_default(1, 1); 157104c426ccSMark Murray while ((ep = env_default(0, 1))) 157281cb6ddcSMark Murray env_opt_add(ep); 157381cb6ddcSMark Murray return; 157481cb6ddcSMark Murray } 157581cb6ddcSMark Murray vp = env_getvalue(ep); 157614aab889SJacques Vidrine if (opt_replyp + (vp ? 2 * strlen((char *)vp) : 0) + 157714aab889SJacques Vidrine 2 * strlen((char *)ep) + 6 > opt_replyend) 157881cb6ddcSMark Murray { 15798fa113e5SMark Murray int len; 158081cb6ddcSMark Murray opt_replyend += OPT_REPLY_SIZE; 158181cb6ddcSMark Murray len = opt_replyend - opt_reply; 158281cb6ddcSMark Murray opt_reply = (unsigned char *)realloc(opt_reply, len); 158381cb6ddcSMark Murray if (opt_reply == NULL) { 158481cb6ddcSMark Murray /*@*/ printf("env_opt_add: realloc() failed!!!\n"); 158581cb6ddcSMark Murray opt_reply = opt_replyp = opt_replyend = NULL; 158681cb6ddcSMark Murray return; 158781cb6ddcSMark Murray } 158881cb6ddcSMark Murray opt_replyp = opt_reply + len - (opt_replyend - opt_replyp); 158981cb6ddcSMark Murray opt_replyend = opt_reply + len; 159081cb6ddcSMark Murray } 159181cb6ddcSMark Murray if (opt_welldefined(ep)) 159281cb6ddcSMark Murray #ifdef OLD_ENVIRON 159381cb6ddcSMark Murray if (telopt_environ == TELOPT_OLD_ENVIRON) 159481cb6ddcSMark Murray *opt_replyp++ = old_env_var; 159581cb6ddcSMark Murray else 159681cb6ddcSMark Murray #endif 159781cb6ddcSMark Murray *opt_replyp++ = NEW_ENV_VAR; 159881cb6ddcSMark Murray else 159981cb6ddcSMark Murray *opt_replyp++ = ENV_USERVAR; 160081cb6ddcSMark Murray for (;;) { 160104c426ccSMark Murray while ((c = *ep++)) { 160214aab889SJacques Vidrine if (opt_replyp + (2 + 2) > opt_replyend) 160314aab889SJacques Vidrine return; 160481cb6ddcSMark Murray switch(c&0xff) { 160581cb6ddcSMark Murray case IAC: 160681cb6ddcSMark Murray *opt_replyp++ = IAC; 160781cb6ddcSMark Murray break; 160881cb6ddcSMark Murray case NEW_ENV_VAR: 160981cb6ddcSMark Murray case NEW_ENV_VALUE: 161081cb6ddcSMark Murray case ENV_ESC: 161181cb6ddcSMark Murray case ENV_USERVAR: 161281cb6ddcSMark Murray *opt_replyp++ = ENV_ESC; 161381cb6ddcSMark Murray break; 161481cb6ddcSMark Murray } 161581cb6ddcSMark Murray *opt_replyp++ = c; 161681cb6ddcSMark Murray } 161704c426ccSMark Murray if ((ep = vp)) { 161814aab889SJacques Vidrine if (opt_replyp + (1 + 2 + 2) > opt_replyend) 161914aab889SJacques Vidrine return; 162081cb6ddcSMark Murray #ifdef OLD_ENVIRON 162181cb6ddcSMark Murray if (telopt_environ == TELOPT_OLD_ENVIRON) 162281cb6ddcSMark Murray *opt_replyp++ = old_env_value; 162381cb6ddcSMark Murray else 162481cb6ddcSMark Murray #endif 162581cb6ddcSMark Murray *opt_replyp++ = NEW_ENV_VALUE; 162681cb6ddcSMark Murray vp = NULL; 162781cb6ddcSMark Murray } else 162881cb6ddcSMark Murray break; 162981cb6ddcSMark Murray } 163081cb6ddcSMark Murray } 163181cb6ddcSMark Murray 163281cb6ddcSMark Murray int 16338fa113e5SMark Murray opt_welldefined(const char *ep) 163481cb6ddcSMark Murray { 163581cb6ddcSMark Murray if ((strcmp(ep, "USER") == 0) || 163681cb6ddcSMark Murray (strcmp(ep, "DISPLAY") == 0) || 163781cb6ddcSMark Murray (strcmp(ep, "PRINTER") == 0) || 163881cb6ddcSMark Murray (strcmp(ep, "SYSTEMTYPE") == 0) || 163981cb6ddcSMark Murray (strcmp(ep, "JOB") == 0) || 164081cb6ddcSMark Murray (strcmp(ep, "ACCT") == 0)) 164181cb6ddcSMark Murray return(1); 164281cb6ddcSMark Murray return(0); 164381cb6ddcSMark Murray } 16448fa113e5SMark Murray 164581cb6ddcSMark Murray void 16468fa113e5SMark Murray env_opt_end(int emptyok) 164781cb6ddcSMark Murray { 16488fa113e5SMark Murray int len; 164981cb6ddcSMark Murray 165014aab889SJacques Vidrine if (opt_replyp + 2 > opt_replyend) 165114aab889SJacques Vidrine return; 165214aab889SJacques Vidrine len = opt_replyp + 2 - opt_reply; 165381cb6ddcSMark Murray if (emptyok || len > 6) { 165481cb6ddcSMark Murray *opt_replyp++ = IAC; 165581cb6ddcSMark Murray *opt_replyp++ = SE; 165681cb6ddcSMark Murray if (NETROOM() > len) { 165781cb6ddcSMark Murray ring_supply_data(&netoring, opt_reply, len); 165881cb6ddcSMark Murray printsub('>', &opt_reply[2], len - 2); 165981cb6ddcSMark Murray } 166081cb6ddcSMark Murray /*@*/ else printf("slc_end_reply: not enough room\n"); 166181cb6ddcSMark Murray } 166281cb6ddcSMark Murray if (opt_reply) { 166381cb6ddcSMark Murray free(opt_reply); 166481cb6ddcSMark Murray opt_reply = opt_replyp = opt_replyend = NULL; 166581cb6ddcSMark Murray } 166681cb6ddcSMark Murray } 166781cb6ddcSMark Murray 1668ad11def5SEnji Cooper 166981cb6ddcSMark Murray 167081cb6ddcSMark Murray int 16718fa113e5SMark Murray telrcv(void) 167281cb6ddcSMark Murray { 16738fa113e5SMark Murray int c; 16748fa113e5SMark Murray int scc; 16758fa113e5SMark Murray unsigned char *sbp; 167681cb6ddcSMark Murray int count; 167781cb6ddcSMark Murray int returnValue = 0; 167881cb6ddcSMark Murray 167981cb6ddcSMark Murray scc = 0; 168081cb6ddcSMark Murray count = 0; 168181cb6ddcSMark Murray while (TTYROOM() > 2) { 168281cb6ddcSMark Murray if (scc == 0) { 168381cb6ddcSMark Murray if (count) { 168481cb6ddcSMark Murray ring_consumed(&netiring, count); 168581cb6ddcSMark Murray returnValue = 1; 168681cb6ddcSMark Murray count = 0; 168781cb6ddcSMark Murray } 168881cb6ddcSMark Murray sbp = netiring.consume; 168981cb6ddcSMark Murray scc = ring_full_consecutive(&netiring); 169081cb6ddcSMark Murray if (scc == 0) { 169181cb6ddcSMark Murray /* No more data coming in */ 169281cb6ddcSMark Murray break; 169381cb6ddcSMark Murray } 169481cb6ddcSMark Murray } 169581cb6ddcSMark Murray 169681cb6ddcSMark Murray c = *sbp++ & 0xff, scc--; count++; 169781cb6ddcSMark Murray #ifdef ENCRYPTION 169881cb6ddcSMark Murray if (decrypt_input) 169981cb6ddcSMark Murray c = (*decrypt_input)(c); 170081cb6ddcSMark Murray #endif /* ENCRYPTION */ 170181cb6ddcSMark Murray 170281cb6ddcSMark Murray switch (telrcv_state) { 170381cb6ddcSMark Murray 170481cb6ddcSMark Murray case TS_CR: 170581cb6ddcSMark Murray telrcv_state = TS_DATA; 170681cb6ddcSMark Murray if (c == '\0') { 170781cb6ddcSMark Murray break; /* Ignore \0 after CR */ 170881cb6ddcSMark Murray } 170981cb6ddcSMark Murray else if ((c == '\n') && my_want_state_is_dont(TELOPT_ECHO) && !crmod) { 171081cb6ddcSMark Murray TTYADD(c); 171181cb6ddcSMark Murray break; 171281cb6ddcSMark Murray } 171386953b02SMark Murray /* FALLTHROUGH */ 171481cb6ddcSMark Murray 171581cb6ddcSMark Murray case TS_DATA: 17163a44a4c3SAnton Berezin if (c == IAC && telnetport >= 0) { 171781cb6ddcSMark Murray telrcv_state = TS_IAC; 171881cb6ddcSMark Murray break; 171981cb6ddcSMark Murray } 172081cb6ddcSMark Murray /* 172181cb6ddcSMark Murray * The 'crmod' hack (see following) is needed 172281cb6ddcSMark Murray * since we can't * set CRMOD on output only. 172381cb6ddcSMark Murray * Machines like MULTICS like to send \r without 172481cb6ddcSMark Murray * \n; since we must turn off CRMOD to get proper 172581cb6ddcSMark Murray * input, the mapping is done here (sigh). 172681cb6ddcSMark Murray */ 172781cb6ddcSMark Murray if ((c == '\r') && my_want_state_is_dont(TELOPT_BINARY)) { 172881cb6ddcSMark Murray if (scc > 0) { 172981cb6ddcSMark Murray c = *sbp&0xff; 173081cb6ddcSMark Murray #ifdef ENCRYPTION 173181cb6ddcSMark Murray if (decrypt_input) 173281cb6ddcSMark Murray c = (*decrypt_input)(c); 173381cb6ddcSMark Murray #endif /* ENCRYPTION */ 173481cb6ddcSMark Murray if (c == 0) { 173581cb6ddcSMark Murray sbp++, scc--; count++; 173681cb6ddcSMark Murray /* a "true" CR */ 173781cb6ddcSMark Murray TTYADD('\r'); 173881cb6ddcSMark Murray } else if (my_want_state_is_dont(TELOPT_ECHO) && 173981cb6ddcSMark Murray (c == '\n')) { 174081cb6ddcSMark Murray sbp++, scc--; count++; 174181cb6ddcSMark Murray TTYADD('\n'); 174281cb6ddcSMark Murray } else { 174381cb6ddcSMark Murray #ifdef ENCRYPTION 174481cb6ddcSMark Murray if (decrypt_input) 174581cb6ddcSMark Murray (*decrypt_input)(-1); 174681cb6ddcSMark Murray #endif /* ENCRYPTION */ 174781cb6ddcSMark Murray 174881cb6ddcSMark Murray TTYADD('\r'); 174981cb6ddcSMark Murray if (crmod) { 175081cb6ddcSMark Murray TTYADD('\n'); 175181cb6ddcSMark Murray } 175281cb6ddcSMark Murray } 175381cb6ddcSMark Murray } else { 175481cb6ddcSMark Murray telrcv_state = TS_CR; 175581cb6ddcSMark Murray TTYADD('\r'); 175681cb6ddcSMark Murray if (crmod) { 175781cb6ddcSMark Murray TTYADD('\n'); 175881cb6ddcSMark Murray } 175981cb6ddcSMark Murray } 176081cb6ddcSMark Murray } else { 176181cb6ddcSMark Murray TTYADD(c); 176281cb6ddcSMark Murray } 176381cb6ddcSMark Murray continue; 176481cb6ddcSMark Murray 176581cb6ddcSMark Murray case TS_IAC: 176681cb6ddcSMark Murray process_iac: 176781cb6ddcSMark Murray switch (c) { 176881cb6ddcSMark Murray 176981cb6ddcSMark Murray case WILL: 177081cb6ddcSMark Murray telrcv_state = TS_WILL; 177181cb6ddcSMark Murray continue; 177281cb6ddcSMark Murray 177381cb6ddcSMark Murray case WONT: 177481cb6ddcSMark Murray telrcv_state = TS_WONT; 177581cb6ddcSMark Murray continue; 177681cb6ddcSMark Murray 177781cb6ddcSMark Murray case DO: 177881cb6ddcSMark Murray telrcv_state = TS_DO; 177981cb6ddcSMark Murray continue; 178081cb6ddcSMark Murray 178181cb6ddcSMark Murray case DONT: 178281cb6ddcSMark Murray telrcv_state = TS_DONT; 178381cb6ddcSMark Murray continue; 178481cb6ddcSMark Murray 178581cb6ddcSMark Murray case DM: 178681cb6ddcSMark Murray /* 178781cb6ddcSMark Murray * We may have missed an urgent notification, 178881cb6ddcSMark Murray * so make sure we flush whatever is in the 178981cb6ddcSMark Murray * buffer currently. 179081cb6ddcSMark Murray */ 179181cb6ddcSMark Murray printoption("RCVD", IAC, DM); 179281cb6ddcSMark Murray SYNCHing = 1; 179381cb6ddcSMark Murray (void) ttyflush(1); 179481cb6ddcSMark Murray SYNCHing = stilloob(); 179581cb6ddcSMark Murray settimer(gotDM); 179681cb6ddcSMark Murray break; 179781cb6ddcSMark Murray 179881cb6ddcSMark Murray case SB: 179981cb6ddcSMark Murray SB_CLEAR(); 180081cb6ddcSMark Murray telrcv_state = TS_SB; 180181cb6ddcSMark Murray continue; 180281cb6ddcSMark Murray 180381cb6ddcSMark Murray case IAC: 180481cb6ddcSMark Murray TTYADD(IAC); 180581cb6ddcSMark Murray break; 180681cb6ddcSMark Murray 180781cb6ddcSMark Murray case NOP: 180881cb6ddcSMark Murray case GA: 180981cb6ddcSMark Murray default: 181081cb6ddcSMark Murray printoption("RCVD", IAC, c); 181181cb6ddcSMark Murray break; 181281cb6ddcSMark Murray } 181381cb6ddcSMark Murray telrcv_state = TS_DATA; 181481cb6ddcSMark Murray continue; 181581cb6ddcSMark Murray 181681cb6ddcSMark Murray case TS_WILL: 181781cb6ddcSMark Murray printoption("RCVD", WILL, c); 181881cb6ddcSMark Murray willoption(c); 181981cb6ddcSMark Murray telrcv_state = TS_DATA; 182081cb6ddcSMark Murray continue; 182181cb6ddcSMark Murray 182281cb6ddcSMark Murray case TS_WONT: 182381cb6ddcSMark Murray printoption("RCVD", WONT, c); 182481cb6ddcSMark Murray wontoption(c); 182581cb6ddcSMark Murray telrcv_state = TS_DATA; 182681cb6ddcSMark Murray continue; 182781cb6ddcSMark Murray 182881cb6ddcSMark Murray case TS_DO: 182981cb6ddcSMark Murray printoption("RCVD", DO, c); 183081cb6ddcSMark Murray dooption(c); 183181cb6ddcSMark Murray if (c == TELOPT_NAWS) { 183281cb6ddcSMark Murray sendnaws(); 183381cb6ddcSMark Murray } else if (c == TELOPT_LFLOW) { 183481cb6ddcSMark Murray localflow = 1; 183581cb6ddcSMark Murray setcommandmode(); 183681cb6ddcSMark Murray setconnmode(0); 183781cb6ddcSMark Murray } 183881cb6ddcSMark Murray telrcv_state = TS_DATA; 183981cb6ddcSMark Murray continue; 184081cb6ddcSMark Murray 184181cb6ddcSMark Murray case TS_DONT: 184281cb6ddcSMark Murray printoption("RCVD", DONT, c); 184381cb6ddcSMark Murray dontoption(c); 184481cb6ddcSMark Murray flushline = 1; 184581cb6ddcSMark Murray setconnmode(0); /* set new tty mode (maybe) */ 184681cb6ddcSMark Murray telrcv_state = TS_DATA; 184781cb6ddcSMark Murray continue; 184881cb6ddcSMark Murray 184981cb6ddcSMark Murray case TS_SB: 185081cb6ddcSMark Murray if (c == IAC) { 185181cb6ddcSMark Murray telrcv_state = TS_SE; 185281cb6ddcSMark Murray } else { 185381cb6ddcSMark Murray SB_ACCUM(c); 185481cb6ddcSMark Murray } 185581cb6ddcSMark Murray continue; 185681cb6ddcSMark Murray 185781cb6ddcSMark Murray case TS_SE: 185881cb6ddcSMark Murray if (c != SE) { 185981cb6ddcSMark Murray if (c != IAC) { 186081cb6ddcSMark Murray /* 186181cb6ddcSMark Murray * This is an error. We only expect to get 186281cb6ddcSMark Murray * "IAC IAC" or "IAC SE". Several things may 186381cb6ddcSMark Murray * have happend. An IAC was not doubled, the 186481cb6ddcSMark Murray * IAC SE was left off, or another option got 186581cb6ddcSMark Murray * inserted into the suboption are all possibilities. 186681cb6ddcSMark Murray * If we assume that the IAC was not doubled, 186781cb6ddcSMark Murray * and really the IAC SE was left off, we could 186881cb6ddcSMark Murray * get into an infinate loop here. So, instead, 186981cb6ddcSMark Murray * we terminate the suboption, and process the 187081cb6ddcSMark Murray * partial suboption if we can. 187181cb6ddcSMark Murray */ 187281cb6ddcSMark Murray SB_ACCUM(IAC); 187381cb6ddcSMark Murray SB_ACCUM(c); 187481cb6ddcSMark Murray subpointer -= 2; 187581cb6ddcSMark Murray SB_TERM(); 187681cb6ddcSMark Murray 187781cb6ddcSMark Murray printoption("In SUBOPTION processing, RCVD", IAC, c); 187881cb6ddcSMark Murray suboption(); /* handle sub-option */ 187981cb6ddcSMark Murray telrcv_state = TS_IAC; 188081cb6ddcSMark Murray goto process_iac; 188181cb6ddcSMark Murray } 188281cb6ddcSMark Murray SB_ACCUM(c); 188381cb6ddcSMark Murray telrcv_state = TS_SB; 188481cb6ddcSMark Murray } else { 188581cb6ddcSMark Murray SB_ACCUM(IAC); 188681cb6ddcSMark Murray SB_ACCUM(SE); 188781cb6ddcSMark Murray subpointer -= 2; 188881cb6ddcSMark Murray SB_TERM(); 188981cb6ddcSMark Murray suboption(); /* handle sub-option */ 189081cb6ddcSMark Murray telrcv_state = TS_DATA; 189181cb6ddcSMark Murray } 189281cb6ddcSMark Murray } 189381cb6ddcSMark Murray } 189481cb6ddcSMark Murray if (count) 189581cb6ddcSMark Murray ring_consumed(&netiring, count); 189681cb6ddcSMark Murray return returnValue||count; 189781cb6ddcSMark Murray } 189881cb6ddcSMark Murray 189981cb6ddcSMark Murray static int bol = 1, local = 0; 190081cb6ddcSMark Murray 190181cb6ddcSMark Murray int 19028fa113e5SMark Murray rlogin_susp(void) 190381cb6ddcSMark Murray { 190481cb6ddcSMark Murray if (local) { 190581cb6ddcSMark Murray local = 0; 190681cb6ddcSMark Murray bol = 1; 190781cb6ddcSMark Murray command(0, "z\n", 2); 190881cb6ddcSMark Murray return(1); 190981cb6ddcSMark Murray } 191081cb6ddcSMark Murray return(0); 191181cb6ddcSMark Murray } 191281cb6ddcSMark Murray 191381cb6ddcSMark Murray static int 19148fa113e5SMark Murray telsnd(void) 191581cb6ddcSMark Murray { 191681cb6ddcSMark Murray int tcc; 191781cb6ddcSMark Murray int count; 191881cb6ddcSMark Murray int returnValue = 0; 191981cb6ddcSMark Murray unsigned char *tbp; 192081cb6ddcSMark Murray 192181cb6ddcSMark Murray tcc = 0; 192281cb6ddcSMark Murray count = 0; 192381cb6ddcSMark Murray while (NETROOM() > 2) { 19248fa113e5SMark Murray int sc; 19258fa113e5SMark Murray int c; 192681cb6ddcSMark Murray 192781cb6ddcSMark Murray if (tcc == 0) { 192881cb6ddcSMark Murray if (count) { 192981cb6ddcSMark Murray ring_consumed(&ttyiring, count); 193081cb6ddcSMark Murray returnValue = 1; 193181cb6ddcSMark Murray count = 0; 193281cb6ddcSMark Murray } 193381cb6ddcSMark Murray tbp = ttyiring.consume; 193481cb6ddcSMark Murray tcc = ring_full_consecutive(&ttyiring); 193581cb6ddcSMark Murray if (tcc == 0) { 193681cb6ddcSMark Murray break; 193781cb6ddcSMark Murray } 193881cb6ddcSMark Murray } 193981cb6ddcSMark Murray c = *tbp++ & 0xff, sc = strip(c), tcc--; count++; 194081cb6ddcSMark Murray if (rlogin != _POSIX_VDISABLE) { 194181cb6ddcSMark Murray if (bol) { 194281cb6ddcSMark Murray bol = 0; 194381cb6ddcSMark Murray if (sc == rlogin) { 194481cb6ddcSMark Murray local = 1; 194581cb6ddcSMark Murray continue; 194681cb6ddcSMark Murray } 194781cb6ddcSMark Murray } else if (local) { 194881cb6ddcSMark Murray local = 0; 194981cb6ddcSMark Murray if (sc == '.' || c == termEofChar) { 195081cb6ddcSMark Murray bol = 1; 195181cb6ddcSMark Murray command(0, "close\n", 6); 195281cb6ddcSMark Murray continue; 195381cb6ddcSMark Murray } 195481cb6ddcSMark Murray if (sc == termSuspChar) { 195581cb6ddcSMark Murray bol = 1; 195681cb6ddcSMark Murray command(0, "z\n", 2); 195781cb6ddcSMark Murray continue; 195881cb6ddcSMark Murray } 195981cb6ddcSMark Murray if (sc == escape) { 19608fa113e5SMark Murray command(0, tbp, tcc); 196181cb6ddcSMark Murray bol = 1; 196281cb6ddcSMark Murray count += tcc; 196381cb6ddcSMark Murray tcc = 0; 196481cb6ddcSMark Murray flushline = 1; 196581cb6ddcSMark Murray break; 196681cb6ddcSMark Murray } 196781cb6ddcSMark Murray if (sc != rlogin) { 196881cb6ddcSMark Murray ++tcc; 196981cb6ddcSMark Murray --tbp; 197081cb6ddcSMark Murray --count; 197181cb6ddcSMark Murray c = sc = rlogin; 197281cb6ddcSMark Murray } 197381cb6ddcSMark Murray } 197481cb6ddcSMark Murray if ((sc == '\n') || (sc == '\r')) 197581cb6ddcSMark Murray bol = 1; 197642cf8219SRuslan Ermilov } else if (escape != _POSIX_VDISABLE && sc == escape) { 197781cb6ddcSMark Murray /* 197881cb6ddcSMark Murray * Double escape is a pass through of a single escape character. 197981cb6ddcSMark Murray */ 198081cb6ddcSMark Murray if (tcc && strip(*tbp) == escape) { 198181cb6ddcSMark Murray tbp++; 198281cb6ddcSMark Murray tcc--; 198381cb6ddcSMark Murray count++; 198481cb6ddcSMark Murray bol = 0; 198581cb6ddcSMark Murray } else { 198681cb6ddcSMark Murray command(0, (char *)tbp, tcc); 198781cb6ddcSMark Murray bol = 1; 198881cb6ddcSMark Murray count += tcc; 198981cb6ddcSMark Murray tcc = 0; 199081cb6ddcSMark Murray flushline = 1; 199181cb6ddcSMark Murray break; 199281cb6ddcSMark Murray } 199381cb6ddcSMark Murray } else 199481cb6ddcSMark Murray bol = 0; 199581cb6ddcSMark Murray #ifdef KLUDGELINEMODE 199681cb6ddcSMark Murray if (kludgelinemode && (globalmode&MODE_EDIT) && (sc == echoc)) { 199781cb6ddcSMark Murray if (tcc > 0 && strip(*tbp) == echoc) { 199881cb6ddcSMark Murray tcc--; tbp++; count++; 199981cb6ddcSMark Murray } else { 200081cb6ddcSMark Murray dontlecho = !dontlecho; 200181cb6ddcSMark Murray settimer(echotoggle); 200281cb6ddcSMark Murray setconnmode(0); 200381cb6ddcSMark Murray flushline = 1; 200481cb6ddcSMark Murray break; 200581cb6ddcSMark Murray } 200681cb6ddcSMark Murray } 200781cb6ddcSMark Murray #endif 200881cb6ddcSMark Murray if (MODE_LOCAL_CHARS(globalmode)) { 200981cb6ddcSMark Murray if (TerminalSpecialChars(sc) == 0) { 201081cb6ddcSMark Murray bol = 1; 201181cb6ddcSMark Murray break; 201281cb6ddcSMark Murray } 201381cb6ddcSMark Murray } 201481cb6ddcSMark Murray if (my_want_state_is_wont(TELOPT_BINARY)) { 201581cb6ddcSMark Murray switch (c) { 201681cb6ddcSMark Murray case '\n': 201781cb6ddcSMark Murray /* 201881cb6ddcSMark Murray * If we are in CRMOD mode (\r ==> \n) 201981cb6ddcSMark Murray * on our local machine, then probably 202081cb6ddcSMark Murray * a newline (unix) is CRLF (TELNET). 202181cb6ddcSMark Murray */ 202281cb6ddcSMark Murray if (MODE_LOCAL_CHARS(globalmode)) { 202381cb6ddcSMark Murray NETADD('\r'); 202481cb6ddcSMark Murray } 202581cb6ddcSMark Murray NETADD('\n'); 202681cb6ddcSMark Murray bol = flushline = 1; 202781cb6ddcSMark Murray break; 202881cb6ddcSMark Murray case '\r': 202981cb6ddcSMark Murray if (!crlf) { 203081cb6ddcSMark Murray NET2ADD('\r', '\0'); 203181cb6ddcSMark Murray } else { 203281cb6ddcSMark Murray NET2ADD('\r', '\n'); 203381cb6ddcSMark Murray } 203481cb6ddcSMark Murray bol = flushline = 1; 203581cb6ddcSMark Murray break; 203681cb6ddcSMark Murray case IAC: 203781cb6ddcSMark Murray NET2ADD(IAC, IAC); 203881cb6ddcSMark Murray break; 203981cb6ddcSMark Murray default: 204081cb6ddcSMark Murray NETADD(c); 204181cb6ddcSMark Murray break; 204281cb6ddcSMark Murray } 204381cb6ddcSMark Murray } else if (c == IAC) { 204481cb6ddcSMark Murray NET2ADD(IAC, IAC); 204581cb6ddcSMark Murray } else { 204681cb6ddcSMark Murray NETADD(c); 204781cb6ddcSMark Murray } 204881cb6ddcSMark Murray } 204981cb6ddcSMark Murray if (count) 205081cb6ddcSMark Murray ring_consumed(&ttyiring, count); 205181cb6ddcSMark Murray return returnValue||count; /* Non-zero if we did anything */ 205281cb6ddcSMark Murray } 2053ad11def5SEnji Cooper 205481cb6ddcSMark Murray /* 205581cb6ddcSMark Murray * Scheduler() 205681cb6ddcSMark Murray * 205781cb6ddcSMark Murray * Try to do something. 205881cb6ddcSMark Murray * 205981cb6ddcSMark Murray * If we do something useful, return 1; else return 0. 206081cb6ddcSMark Murray * 206181cb6ddcSMark Murray */ 206281cb6ddcSMark Murray 20638fa113e5SMark Murray static int 20648fa113e5SMark Murray Scheduler(int block) 206581cb6ddcSMark Murray { 206681cb6ddcSMark Murray /* One wants to be a bit careful about setting returnValue 206781cb6ddcSMark Murray * to one, since a one implies we did some useful work, 206881cb6ddcSMark Murray * and therefore probably won't be called to block next 206981cb6ddcSMark Murray */ 207081cb6ddcSMark Murray int returnValue; 207181cb6ddcSMark Murray int netin, netout, netex, ttyin, ttyout; 207281cb6ddcSMark Murray 207381cb6ddcSMark Murray /* Decide which rings should be processed */ 207481cb6ddcSMark Murray 207581cb6ddcSMark Murray netout = ring_full_count(&netoring) && 207681cb6ddcSMark Murray (flushline || 207781cb6ddcSMark Murray (my_want_state_is_wont(TELOPT_LINEMODE) 207881cb6ddcSMark Murray #ifdef KLUDGELINEMODE 207981cb6ddcSMark Murray && (!kludgelinemode || my_want_state_is_do(TELOPT_SGA)) 208081cb6ddcSMark Murray #endif 208181cb6ddcSMark Murray ) || 208281cb6ddcSMark Murray my_want_state_is_will(TELOPT_BINARY)); 208381cb6ddcSMark Murray ttyout = ring_full_count(&ttyoring); 208481cb6ddcSMark Murray 208504c426ccSMark Murray ttyin = ring_empty_count(&ttyiring) && (clienteof == 0); 208681cb6ddcSMark Murray 208781cb6ddcSMark Murray netin = !ISend && ring_empty_count(&netiring); 208881cb6ddcSMark Murray 208981cb6ddcSMark Murray netex = !SYNCHing; 209081cb6ddcSMark Murray 209181cb6ddcSMark Murray /* Call to system code to process rings */ 209281cb6ddcSMark Murray 209381cb6ddcSMark Murray returnValue = process_rings(netin, netout, netex, ttyin, ttyout, !block); 209481cb6ddcSMark Murray 209581cb6ddcSMark Murray /* Now, look at the input rings, looking for work to do. */ 209681cb6ddcSMark Murray 209781cb6ddcSMark Murray if (ring_full_count(&ttyiring)) { 209881cb6ddcSMark Murray returnValue |= telsnd(); 209981cb6ddcSMark Murray } 210081cb6ddcSMark Murray 210181cb6ddcSMark Murray if (ring_full_count(&netiring)) { 210281cb6ddcSMark Murray returnValue |= telrcv(); 210381cb6ddcSMark Murray } 210481cb6ddcSMark Murray return returnValue; 210581cb6ddcSMark Murray } 210681cb6ddcSMark Murray 21078fa113e5SMark Murray #ifdef AUTHENTICATION 21088fa113e5SMark Murray #define __unusedhere 21098fa113e5SMark Murray #else 21108fa113e5SMark Murray #define __unusedhere __unused 21118fa113e5SMark Murray #endif 211281cb6ddcSMark Murray /* 211381cb6ddcSMark Murray * Select from tty and network... 211481cb6ddcSMark Murray */ 211581cb6ddcSMark Murray void 21168fa113e5SMark Murray telnet(char *user __unusedhere) 211781cb6ddcSMark Murray { 211881cb6ddcSMark Murray sys_telnet_init(); 211981cb6ddcSMark Murray 21208fa113e5SMark Murray #ifdef AUTHENTICATION 21218fa113e5SMark Murray #ifdef ENCRYPTION 212281cb6ddcSMark Murray { 212381cb6ddcSMark Murray static char local_host[256] = { 0 }; 212481cb6ddcSMark Murray 212581cb6ddcSMark Murray if (!local_host[0]) { 212681cb6ddcSMark Murray gethostname(local_host, sizeof(local_host)); 212781cb6ddcSMark Murray local_host[sizeof(local_host)-1] = 0; 212881cb6ddcSMark Murray } 212981cb6ddcSMark Murray auth_encrypt_init(local_host, hostname, "TELNET", 0); 213081cb6ddcSMark Murray auth_encrypt_user(user); 213181cb6ddcSMark Murray } 21328fa113e5SMark Murray #endif 21338fa113e5SMark Murray #endif 21343a44a4c3SAnton Berezin if (telnetport > 0) { 21358fa113e5SMark Murray #ifdef AUTHENTICATION 213681cb6ddcSMark Murray if (autologin) 213781cb6ddcSMark Murray send_will(TELOPT_AUTHENTICATION, 1); 213881cb6ddcSMark Murray #endif 213981cb6ddcSMark Murray #ifdef ENCRYPTION 214081cb6ddcSMark Murray send_do(TELOPT_ENCRYPT, 1); 214181cb6ddcSMark Murray send_will(TELOPT_ENCRYPT, 1); 214281cb6ddcSMark Murray #endif /* ENCRYPTION */ 214381cb6ddcSMark Murray send_do(TELOPT_SGA, 1); 214481cb6ddcSMark Murray send_will(TELOPT_TTYPE, 1); 214581cb6ddcSMark Murray send_will(TELOPT_NAWS, 1); 214681cb6ddcSMark Murray send_will(TELOPT_TSPEED, 1); 214781cb6ddcSMark Murray send_will(TELOPT_LFLOW, 1); 214881cb6ddcSMark Murray send_will(TELOPT_LINEMODE, 1); 214981cb6ddcSMark Murray send_will(TELOPT_NEW_ENVIRON, 1); 215081cb6ddcSMark Murray send_do(TELOPT_STATUS, 1); 21518fa113e5SMark Murray if (env_getvalue("DISPLAY")) 215281cb6ddcSMark Murray send_will(TELOPT_XDISPLOC, 1); 215381cb6ddcSMark Murray if (eight) 215481cb6ddcSMark Murray tel_enter_binary(eight); 215581cb6ddcSMark Murray } 215681cb6ddcSMark Murray 215781cb6ddcSMark Murray for (;;) { 215881cb6ddcSMark Murray int schedValue; 215981cb6ddcSMark Murray 216081cb6ddcSMark Murray while ((schedValue = Scheduler(0)) != 0) { 216181cb6ddcSMark Murray if (schedValue == -1) { 216281cb6ddcSMark Murray setcommandmode(); 216381cb6ddcSMark Murray return; 216481cb6ddcSMark Murray } 216581cb6ddcSMark Murray } 216681cb6ddcSMark Murray 216781cb6ddcSMark Murray if (Scheduler(1) == -1) { 216881cb6ddcSMark Murray setcommandmode(); 216981cb6ddcSMark Murray return; 217081cb6ddcSMark Murray } 217181cb6ddcSMark Murray } 217281cb6ddcSMark Murray } 217381cb6ddcSMark Murray 217481cb6ddcSMark Murray #if 0 /* XXX - this not being in is a bug */ 217581cb6ddcSMark Murray /* 217681cb6ddcSMark Murray * nextitem() 217781cb6ddcSMark Murray * 217881cb6ddcSMark Murray * Return the address of the next "item" in the TELNET data 217981cb6ddcSMark Murray * stream. This will be the address of the next character if 218081cb6ddcSMark Murray * the current address is a user data character, or it will 218181cb6ddcSMark Murray * be the address of the character following the TELNET command 218281cb6ddcSMark Murray * if the current address is a TELNET IAC ("I Am a Command") 218381cb6ddcSMark Murray * character. 218481cb6ddcSMark Murray */ 218581cb6ddcSMark Murray 218681cb6ddcSMark Murray static char * 21878fa113e5SMark Murray nextitem(char *current) 218881cb6ddcSMark Murray { 218981cb6ddcSMark Murray if ((*current&0xff) != IAC) { 219081cb6ddcSMark Murray return current+1; 219181cb6ddcSMark Murray } 219281cb6ddcSMark Murray switch (*(current+1)&0xff) { 219381cb6ddcSMark Murray case DO: 219481cb6ddcSMark Murray case DONT: 219581cb6ddcSMark Murray case WILL: 219681cb6ddcSMark Murray case WONT: 219781cb6ddcSMark Murray return current+3; 219881cb6ddcSMark Murray case SB: /* loop forever looking for the SE */ 219981cb6ddcSMark Murray { 22008fa113e5SMark Murray char *look = current+2; 220181cb6ddcSMark Murray 220281cb6ddcSMark Murray for (;;) { 220381cb6ddcSMark Murray if ((*look++&0xff) == IAC) { 220481cb6ddcSMark Murray if ((*look++&0xff) == SE) { 220581cb6ddcSMark Murray return look; 220681cb6ddcSMark Murray } 220781cb6ddcSMark Murray } 220881cb6ddcSMark Murray } 220981cb6ddcSMark Murray } 221081cb6ddcSMark Murray default: 221181cb6ddcSMark Murray return current+2; 221281cb6ddcSMark Murray } 221381cb6ddcSMark Murray } 221481cb6ddcSMark Murray #endif /* 0 */ 221581cb6ddcSMark Murray 221681cb6ddcSMark Murray /* 221781cb6ddcSMark Murray * netclear() 221881cb6ddcSMark Murray * 221981cb6ddcSMark Murray * We are about to do a TELNET SYNCH operation. Clear 222081cb6ddcSMark Murray * the path to the network. 222181cb6ddcSMark Murray * 222281cb6ddcSMark Murray * Things are a bit tricky since we may have sent the first 222381cb6ddcSMark Murray * byte or so of a previous TELNET command into the network. 222481cb6ddcSMark Murray * So, we have to scan the network buffer from the beginning 222581cb6ddcSMark Murray * until we are up to where we want to be. 222681cb6ddcSMark Murray * 222781cb6ddcSMark Murray * A side effect of what we do, just to keep things 222881cb6ddcSMark Murray * simple, is to clear the urgent data pointer. The principal 222981cb6ddcSMark Murray * caller should be setting the urgent data pointer AFTER calling 223081cb6ddcSMark Murray * us in any case. 223181cb6ddcSMark Murray */ 223281cb6ddcSMark Murray 223381cb6ddcSMark Murray static void 22348fa113e5SMark Murray netclear(void) 223581cb6ddcSMark Murray { 22368fa113e5SMark Murray /* Deleted */ 223781cb6ddcSMark Murray } 223881cb6ddcSMark Murray 223981cb6ddcSMark Murray /* 224081cb6ddcSMark Murray * These routines add various telnet commands to the data stream. 224181cb6ddcSMark Murray */ 224281cb6ddcSMark Murray 224381cb6ddcSMark Murray static void 22448fa113e5SMark Murray doflush(void) 224581cb6ddcSMark Murray { 224681cb6ddcSMark Murray NET2ADD(IAC, DO); 224781cb6ddcSMark Murray NETADD(TELOPT_TM); 224881cb6ddcSMark Murray flushline = 1; 224981cb6ddcSMark Murray flushout = 1; 225081cb6ddcSMark Murray (void) ttyflush(1); /* Flush/drop output */ 225181cb6ddcSMark Murray /* do printoption AFTER flush, otherwise the output gets tossed... */ 225281cb6ddcSMark Murray printoption("SENT", DO, TELOPT_TM); 225381cb6ddcSMark Murray } 225481cb6ddcSMark Murray 225581cb6ddcSMark Murray void 22568fa113e5SMark Murray xmitAO(void) 225781cb6ddcSMark Murray { 225881cb6ddcSMark Murray NET2ADD(IAC, AO); 225981cb6ddcSMark Murray printoption("SENT", IAC, AO); 226081cb6ddcSMark Murray if (autoflush) { 226181cb6ddcSMark Murray doflush(); 226281cb6ddcSMark Murray } 226381cb6ddcSMark Murray } 226481cb6ddcSMark Murray 226581cb6ddcSMark Murray void 22668fa113e5SMark Murray xmitEL(void) 226781cb6ddcSMark Murray { 226881cb6ddcSMark Murray NET2ADD(IAC, EL); 226981cb6ddcSMark Murray printoption("SENT", IAC, EL); 227081cb6ddcSMark Murray } 227181cb6ddcSMark Murray 227281cb6ddcSMark Murray void 22738fa113e5SMark Murray xmitEC(void) 227481cb6ddcSMark Murray { 227581cb6ddcSMark Murray NET2ADD(IAC, EC); 227681cb6ddcSMark Murray printoption("SENT", IAC, EC); 227781cb6ddcSMark Murray } 227881cb6ddcSMark Murray 227981cb6ddcSMark Murray int 22808fa113e5SMark Murray dosynch(char *ch __unused) 228181cb6ddcSMark Murray { 228281cb6ddcSMark Murray netclear(); /* clear the path to the network */ 228381cb6ddcSMark Murray NETADD(IAC); 228481cb6ddcSMark Murray setneturg(); 228581cb6ddcSMark Murray NETADD(DM); 228681cb6ddcSMark Murray printoption("SENT", IAC, DM); 228781cb6ddcSMark Murray return 1; 228881cb6ddcSMark Murray } 228981cb6ddcSMark Murray 229081cb6ddcSMark Murray int want_status_response = 0; 229181cb6ddcSMark Murray 229281cb6ddcSMark Murray int 22938fa113e5SMark Murray get_status(char *ch __unused) 229481cb6ddcSMark Murray { 229581cb6ddcSMark Murray unsigned char tmp[16]; 22968fa113e5SMark Murray unsigned char *cp; 229781cb6ddcSMark Murray 229881cb6ddcSMark Murray if (my_want_state_is_dont(TELOPT_STATUS)) { 229981cb6ddcSMark Murray printf("Remote side does not support STATUS option\n"); 230081cb6ddcSMark Murray return 0; 230181cb6ddcSMark Murray } 230281cb6ddcSMark Murray cp = tmp; 230381cb6ddcSMark Murray 230481cb6ddcSMark Murray *cp++ = IAC; 230581cb6ddcSMark Murray *cp++ = SB; 230681cb6ddcSMark Murray *cp++ = TELOPT_STATUS; 230781cb6ddcSMark Murray *cp++ = TELQUAL_SEND; 230881cb6ddcSMark Murray *cp++ = IAC; 230981cb6ddcSMark Murray *cp++ = SE; 231081cb6ddcSMark Murray if (NETROOM() >= cp - tmp) { 231181cb6ddcSMark Murray ring_supply_data(&netoring, tmp, cp-tmp); 231281cb6ddcSMark Murray printsub('>', tmp+2, cp - tmp - 2); 231381cb6ddcSMark Murray } 231481cb6ddcSMark Murray ++want_status_response; 231581cb6ddcSMark Murray return 1; 231681cb6ddcSMark Murray } 231781cb6ddcSMark Murray 231881cb6ddcSMark Murray void 23198fa113e5SMark Murray intp(void) 232081cb6ddcSMark Murray { 232181cb6ddcSMark Murray NET2ADD(IAC, IP); 232281cb6ddcSMark Murray printoption("SENT", IAC, IP); 232381cb6ddcSMark Murray flushline = 1; 232481cb6ddcSMark Murray if (autoflush) { 232581cb6ddcSMark Murray doflush(); 232681cb6ddcSMark Murray } 232781cb6ddcSMark Murray if (autosynch) { 23288fa113e5SMark Murray dosynch(NULL); 232981cb6ddcSMark Murray } 233081cb6ddcSMark Murray } 233181cb6ddcSMark Murray 233281cb6ddcSMark Murray void 23338fa113e5SMark Murray sendbrk(void) 233481cb6ddcSMark Murray { 233581cb6ddcSMark Murray NET2ADD(IAC, BREAK); 233681cb6ddcSMark Murray printoption("SENT", IAC, BREAK); 233781cb6ddcSMark Murray flushline = 1; 233881cb6ddcSMark Murray if (autoflush) { 233981cb6ddcSMark Murray doflush(); 234081cb6ddcSMark Murray } 234181cb6ddcSMark Murray if (autosynch) { 23428fa113e5SMark Murray dosynch(NULL); 234381cb6ddcSMark Murray } 234481cb6ddcSMark Murray } 234581cb6ddcSMark Murray 234681cb6ddcSMark Murray void 23478fa113e5SMark Murray sendabort(void) 234881cb6ddcSMark Murray { 234981cb6ddcSMark Murray NET2ADD(IAC, ABORT); 235081cb6ddcSMark Murray printoption("SENT", IAC, ABORT); 235181cb6ddcSMark Murray flushline = 1; 235281cb6ddcSMark Murray if (autoflush) { 235381cb6ddcSMark Murray doflush(); 235481cb6ddcSMark Murray } 235581cb6ddcSMark Murray if (autosynch) { 23568fa113e5SMark Murray dosynch(NULL); 235781cb6ddcSMark Murray } 235881cb6ddcSMark Murray } 235981cb6ddcSMark Murray 236081cb6ddcSMark Murray void 23618fa113e5SMark Murray sendsusp(void) 236281cb6ddcSMark Murray { 236381cb6ddcSMark Murray NET2ADD(IAC, SUSP); 236481cb6ddcSMark Murray printoption("SENT", IAC, SUSP); 236581cb6ddcSMark Murray flushline = 1; 236681cb6ddcSMark Murray if (autoflush) { 236781cb6ddcSMark Murray doflush(); 236881cb6ddcSMark Murray } 236981cb6ddcSMark Murray if (autosynch) { 23708fa113e5SMark Murray dosynch(NULL); 237181cb6ddcSMark Murray } 237281cb6ddcSMark Murray } 237381cb6ddcSMark Murray 237481cb6ddcSMark Murray void 23758fa113e5SMark Murray sendeof(void) 237681cb6ddcSMark Murray { 237781cb6ddcSMark Murray NET2ADD(IAC, xEOF); 237881cb6ddcSMark Murray printoption("SENT", IAC, xEOF); 237981cb6ddcSMark Murray } 238081cb6ddcSMark Murray 238181cb6ddcSMark Murray void 23828fa113e5SMark Murray sendayt(void) 238381cb6ddcSMark Murray { 238481cb6ddcSMark Murray NET2ADD(IAC, AYT); 238581cb6ddcSMark Murray printoption("SENT", IAC, AYT); 238681cb6ddcSMark Murray } 238781cb6ddcSMark Murray 238881cb6ddcSMark Murray /* 238981cb6ddcSMark Murray * Send a window size update to the remote system. 239081cb6ddcSMark Murray */ 239181cb6ddcSMark Murray 239281cb6ddcSMark Murray void 23938fa113e5SMark Murray sendnaws(void) 239481cb6ddcSMark Murray { 239581cb6ddcSMark Murray long rows, cols; 239681cb6ddcSMark Murray unsigned char tmp[16]; 23978fa113e5SMark Murray unsigned char *cp; 239881cb6ddcSMark Murray 239981cb6ddcSMark Murray if (my_state_is_wont(TELOPT_NAWS)) 240081cb6ddcSMark Murray return; 240181cb6ddcSMark Murray 240281cb6ddcSMark Murray #define PUTSHORT(cp, x) { if ((*cp++ = ((x)>>8)&0xff) == IAC) *cp++ = IAC; \ 240381cb6ddcSMark Murray if ((*cp++ = ((x))&0xff) == IAC) *cp++ = IAC; } 240481cb6ddcSMark Murray 240581cb6ddcSMark Murray if (TerminalWindowSize(&rows, &cols) == 0) { /* Failed */ 240681cb6ddcSMark Murray return; 240781cb6ddcSMark Murray } 240881cb6ddcSMark Murray 240981cb6ddcSMark Murray cp = tmp; 241081cb6ddcSMark Murray 241181cb6ddcSMark Murray *cp++ = IAC; 241281cb6ddcSMark Murray *cp++ = SB; 241381cb6ddcSMark Murray *cp++ = TELOPT_NAWS; 241481cb6ddcSMark Murray PUTSHORT(cp, cols); 241581cb6ddcSMark Murray PUTSHORT(cp, rows); 241681cb6ddcSMark Murray *cp++ = IAC; 241781cb6ddcSMark Murray *cp++ = SE; 241881cb6ddcSMark Murray if (NETROOM() >= cp - tmp) { 241981cb6ddcSMark Murray ring_supply_data(&netoring, tmp, cp-tmp); 242081cb6ddcSMark Murray printsub('>', tmp+2, cp - tmp - 2); 242181cb6ddcSMark Murray } 242281cb6ddcSMark Murray } 242381cb6ddcSMark Murray 242481cb6ddcSMark Murray void 24258fa113e5SMark Murray tel_enter_binary(int rw) 242681cb6ddcSMark Murray { 242781cb6ddcSMark Murray if (rw&1) 242881cb6ddcSMark Murray send_do(TELOPT_BINARY, 1); 242981cb6ddcSMark Murray if (rw&2) 243081cb6ddcSMark Murray send_will(TELOPT_BINARY, 1); 243181cb6ddcSMark Murray } 243281cb6ddcSMark Murray 243381cb6ddcSMark Murray void 24348fa113e5SMark Murray tel_leave_binary(int rw) 243581cb6ddcSMark Murray { 243681cb6ddcSMark Murray if (rw&1) 243781cb6ddcSMark Murray send_dont(TELOPT_BINARY, 1); 243881cb6ddcSMark Murray if (rw&2) 243981cb6ddcSMark Murray send_wont(TELOPT_BINARY, 1); 244081cb6ddcSMark Murray } 2441