crypto/heimdal-0.6.3/appl/telnet/telnet/externs.h

   1 /*
   2  * Copyright (c) 1988, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)externs.h   8.3 (Berkeley) 5/30/95
  34  */
  35
  36 /* $Id: externs.h,v 1.25 2002/08/28 20:58:23 joda Exp $ */
  37
  38 #ifndef BSD
  39 # define BSD 43
  40 #endif
  41
  42 #ifndef _POSIX_VDISABLE
  43 # ifdef sun
  44 #  include <sys/param.h>        /* pick up VDISABLE definition, mayby */
  45 # endif
  46 # ifdef VDISABLE
  47 #  define _POSIX_VDISABLE VDISABLE
  48 # else
  49 #  define _POSIX_VDISABLE ((cc_t)'\377')
  50 # endif
  51 #endif
  52
  53 #define SUBBUFSIZE      256
  54
  55 extern int
  56     autologin,          /* Autologin enabled */
  57     skiprc,             /* Don't process the ~/.telnetrc file */
  58     eight,              /* use eight bit mode (binary in and/or out */
  59     binary,
  60     flushout,           /* flush output */
  61     connected,          /* Are we connected to the other side? */
  62     globalmode,         /* Mode tty should be in */
  63     telnetport,         /* Are we connected to the telnet port? */
  64     localflow,          /* Flow control handled locally */
  65     restartany,         /* If flow control, restart output on any character */
  66     localchars,         /* we recognize interrupt/quit */
  67     donelclchars,       /* the user has set "localchars" */
  68     showoptions,
  69     wantencryption,     /* User has requested encryption */
  70     net,                /* Network file descriptor */
  71     tin,                /* Terminal input file descriptor */
  72     tout,               /* Terminal output file descriptor */
  73     crlf,               /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
  74     autoflush,          /* flush output when interrupting? */
  75     autosynch,          /* send interrupt characters with SYNCH? */
  76     SYNCHing,           /* Is the stream in telnet SYNCH mode? */
  77     donebinarytoggle,   /* the user has put us in binary */
  78     dontlecho,          /* do we suppress local echoing right now? */
  79     crmod,
  80     netdata,            /* Print out network data flow */
  81     prettydump,         /* Print "netdata" output in user readable format */
  82     termdata,           /* Print out terminal data flow */
  83     debug;              /* Debug level */
  84
  85 extern int intr_happened, intr_waiting; /* for interrupt handling */
  86
  87 extern cc_t escape;     /* Escape to command mode */
  88 extern cc_t rlogin;     /* Rlogin mode escape character */
  89 #ifdef  KLUDGELINEMODE
  90 extern cc_t echoc;      /* Toggle local echoing */
  91 #endif
  92
  93 extern char
  94     *prompt;            /* Prompt for command. */
  95
  96 extern char
  97     doopt[],
  98     dont[],
  99     will[],
 100     wont[],
 101     do_dont_resp[],
 102     will_wont_resp[],
 103     options[],          /* All the little options */
 104     *hostname;          /* Who are we connected to? */
 105 #if     defined(ENCRYPTION)
 106 extern void (*encrypt_output) (unsigned char *, int);
 107 extern int (*decrypt_input) (int);
 108 #endif
 109
 110 /*
 111  * We keep track of each side of the option negotiation.
 112  */
 113
 114 #define MY_STATE_WILL           0x01
 115 #define MY_WANT_STATE_WILL      0x02
 116 #define MY_STATE_DO             0x04
 117 #define MY_WANT_STATE_DO        0x08
 118
 119 /*
 120  * Macros to check the current state of things
 121  */
 122
 123 #define my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
 124 #define my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
 125 #define my_want_state_is_do(opt)        (options[opt]&MY_WANT_STATE_DO)
 126 #define my_want_state_is_will(opt)      (options[opt]&MY_WANT_STATE_WILL)
 127
 128 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
 129 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
 130 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
 131 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
 132
 133 #define set_my_state_do(opt)            {options[opt] |= MY_STATE_DO;}
 134 #define set_my_state_will(opt)          {options[opt] |= MY_STATE_WILL;}
 135 #define set_my_want_state_do(opt)       {options[opt] |= MY_WANT_STATE_DO;}
 136 #define set_my_want_state_will(opt)     {options[opt] |= MY_WANT_STATE_WILL;}
 137
 138 #define set_my_state_dont(opt)          {options[opt] &= ~MY_STATE_DO;}
 139 #define set_my_state_wont(opt)          {options[opt] &= ~MY_STATE_WILL;}
 140 #define set_my_want_state_dont(opt)     {options[opt] &= ~MY_WANT_STATE_DO;}
 141 #define set_my_want_state_wont(opt)     {options[opt] &= ~MY_WANT_STATE_WILL;}
 142
 143 /*
 144  * Make everything symmetrical
 145  */
 146
 147 #define HIS_STATE_WILL                  MY_STATE_DO
 148 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
 149 #define HIS_STATE_DO                    MY_STATE_WILL
 150 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
 151
 152 #define his_state_is_do                 my_state_is_will
 153 #define his_state_is_will               my_state_is_do
 154 #define his_want_state_is_do            my_want_state_is_will
 155 #define his_want_state_is_will          my_want_state_is_do
 156
 157 #define his_state_is_dont               my_state_is_wont
 158 #define his_state_is_wont               my_state_is_dont
 159 #define his_want_state_is_dont          my_want_state_is_wont
 160 #define his_want_state_is_wont          my_want_state_is_dont
 161
 162 #define set_his_state_do                set_my_state_will
 163 #define set_his_state_will              set_my_state_do
 164 #define set_his_want_state_do           set_my_want_state_will
 165 #define set_his_want_state_will         set_my_want_state_do
 166
 167 #define set_his_state_dont              set_my_state_wont
 168 #define set_his_state_wont              set_my_state_dont
 169 #define set_his_want_state_dont         set_my_want_state_wont
 170 #define set_his_want_state_wont         set_my_want_state_dont
 171
 172
 173 extern FILE
 174     *NetTrace;          /* Where debugging output goes */
 175 extern char
 176     NetTraceFile[];     /* Name of file where debugging output goes */
 177 extern void
 178     SetNetTrace (char *);       /* Function to change where debugging goes */
 179
 180 extern jmp_buf
 181     peerdied,
 182     toplevel;           /* For error conditions. */
 183
 184 /* authenc.c */
 185
 186 #if     defined(AUTHENTICATION) || defined(ENCRYPTION)
 187 int telnet_net_write(unsigned char *str, int len);
 188 void net_encrypt(void);
 189 int telnet_spin(void);
 190 char *telnet_getenv(const char *val);
 191 char *telnet_gets(char *prompt, char *result, int length, int echo);
 192 #endif
 193
 194 /* commands.c */
 195
 196 struct env_lst *env_define (unsigned char *, unsigned char *);
 197 struct env_lst *env_find(unsigned char *var);
 198 void env_init (void);
 199 void env_undefine (unsigned char *);
 200 void env_export (unsigned char *);
 201 void env_unexport (unsigned char *);
 202 void env_send (unsigned char *);
 203 void env_list (void);
 204 unsigned char * env_default(int init, int welldefined);
 205 unsigned char * env_getvalue(unsigned char *var);
 206
 207 void set_escape_char(char *s);
 208 int sourceroute(struct addrinfo *ai, char *arg, char **cpp,
 209                 int *prototp, int *optp);
 210
 211 #if     defined(AUTHENTICATION)
 212 int auth_enable (char *);
 213 int auth_disable (char *);
 214 int auth_status (void);
 215 #endif
 216
 217 #if defined(ENCRYPTION)
 218 int     EncryptEnable (char *, char *);
 219 int     EncryptDisable (char *, char *);
 220 int     EncryptType (char *, char *);
 221 int     EncryptStart (char *);
 222 int     EncryptStartInput (void);
 223 int     EncryptStartOutput (void);
 224 int     EncryptStop (char *);
 225 int     EncryptStopInput (void);
 226 int     EncryptStopOutput (void);
 227 int     EncryptStatus (void);
 228 #endif
 229
 230 #ifdef SIGINFO
 231 RETSIGTYPE ayt_status(int);
 232 #endif
 233 int tn(int argc, char **argv);
 234 void command(int top, char *tbuf, int cnt);
 235
 236 /* main.c */
 237
 238 void tninit(void);
 239 void usage(void);
 240 void set_forward_options(void);
 241
 242 /* network.c */
 243
 244 void init_network(void);
 245 int stilloob(void);
 246 void setneturg(void);
 247 int netflush(void);
 248
 249 /* sys_bsd.c */
 250
 251 void init_sys(void);
 252 int TerminalWrite(char *buf, int n);
 253 int TerminalRead(unsigned char *buf, int n);
 254 int TerminalAutoFlush(void);
 255 int TerminalSpecialChars(int c);
 256 void TerminalFlushOutput(void);
 257 void TerminalSaveState(void);
 258 void TerminalDefaultChars(void);
 259 void TerminalNewMode(int f);
 260 cc_t *tcval(int func);
 261 void TerminalSpeeds(long *input_speed, long *output_speed);
 262 int TerminalWindowSize(long *rows, long *cols);
 263 int NetClose(int fd);
 264 void NetNonblockingIO(int fd, int onoff);
 265 int process_rings(int netin, int netout, int netex, int ttyin, int ttyout,
 266                   int poll);
 267
 268 /* telnet.c */
 269
 270 void init_telnet(void);
 271
 272 void tel_leave_binary(int rw);
 273 void tel_enter_binary(int rw);
 274 int opt_welldefined(char *ep);
 275 int telrcv(void);
 276 int rlogin_susp(void);
 277 void intp(void);
 278 void sendbrk(void);
 279 void sendabort(void);
 280 void sendsusp(void);
 281 void sendeof(void);
 282 void sendayt(void);
 283
 284 void xmitAO(void);
 285 void xmitEL(void);
 286 void xmitEC(void);
 287
 288
 289 void     Dump (char, unsigned char *, int);
 290 void     printoption (char *, int, int);
 291 void     printsub (int, unsigned char *, int);
 292 void     sendnaws (void);
 293 void     setconnmode (int);
 294 void     setcommandmode (void);
 295 void     setneturg (void);
 296 void     sys_telnet_init (void);
 297 void     my_telnet (char *);
 298 void     tel_enter_binary (int);
 299 void     TerminalFlushOutput (void);
 300 void     TerminalNewMode (int);
 301 void     TerminalRestoreState (void);
 302 void     TerminalSaveState (void);
 303 void     willoption (int);
 304 void     wontoption (int);
 305
 306
 307 void     send_do (int, int);
 308 void     send_dont (int, int);
 309 void     send_will (int, int);
 310 void     send_wont (int, int);
 311
 312 void     lm_will (unsigned char *, int);
 313 void     lm_wont (unsigned char *, int);
 314 void     lm_do (unsigned char *, int);
 315 void     lm_dont (unsigned char *, int);
 316 void     lm_mode (unsigned char *, int, int);
 317
 318 void     slc_init (void);
 319 void     slcstate (void);
 320 void     slc_mode_export (void);
 321 void     slc_mode_import (int);
 322 void     slc_import (int);
 323 void     slc_export (void);
 324 void     slc (unsigned char *, int);
 325 void     slc_check (void);
 326 void     slc_start_reply (void);
 327 void     slc_add_reply (unsigned char, unsigned char, cc_t);
 328 void     slc_end_reply (void);
 329 int      slc_update (void);
 330
 331 void     env_opt (unsigned char *, int);
 332 void     env_opt_start (void);
 333 void     env_opt_start_info (void);
 334 void     env_opt_add (unsigned char *);
 335 void     env_opt_end (int);
 336
 337 unsigned char     *env_default (int, int);
 338 unsigned char     *env_getvalue (unsigned char *);
 339
 340 int get_status (void);
 341 int dosynch (void);
 342
 343 cc_t *tcval (int);
 344
 345 int quit (void);
 346
 347 /* terminal.c */
 348
 349 void init_terminal(void);
 350 int ttyflush(int drop);
 351 int getconnmode(void);
 352
 353 /* utilities.c */
 354
 355 int SetSockOpt(int fd, int level, int option, int yesno);
 356 void SetNetTrace(char *file);
 357 void Dump(char direction, unsigned char *buffer, int length);
 358 void printoption(char *direction, int cmd, int option);
 359 void optionstatus(void);
 360 void printsub(int direction, unsigned char *pointer, int length);
 361 void EmptyTerminal(void);
 362 void SetForExit(void);
 363 void Exit(int returnCode);
 364 void ExitString(char *string, int returnCode);
 365
 366 extern struct   termios new_tc;
 367
 368 # define termEofChar            new_tc.c_cc[VEOF]
 369 # define termEraseChar          new_tc.c_cc[VERASE]
 370 # define termIntChar            new_tc.c_cc[VINTR]
 371 # define termKillChar           new_tc.c_cc[VKILL]
 372 # define termQuitChar           new_tc.c_cc[VQUIT]
 373
 374 # ifndef        VSUSP
 375 extern cc_t termSuspChar;
 376 # else
 377 #  define termSuspChar          new_tc.c_cc[VSUSP]
 378 # endif
 379 # if    defined(VFLUSHO) && !defined(VDISCARD)
 380 #  define VDISCARD VFLUSHO
 381 # endif
 382 # ifndef        VDISCARD
 383 extern cc_t termFlushChar;
 384 # else
 385 #  define termFlushChar         new_tc.c_cc[VDISCARD]
 386 # endif
 387 # ifndef VWERASE
 388 extern cc_t termWerasChar;
 389 # else
 390 #  define termWerasChar         new_tc.c_cc[VWERASE]
 391 # endif
 392 # ifndef        VREPRINT
 393 extern cc_t termRprntChar;
 394 # else
 395 #  define termRprntChar         new_tc.c_cc[VREPRINT]
 396 # endif
 397 # ifndef        VLNEXT
 398 extern cc_t termLiteralNextChar;
 399 # else
 400 #  define termLiteralNextChar   new_tc.c_cc[VLNEXT]
 401 # endif
 402 # ifndef        VSTART
 403 extern cc_t termStartChar;
 404 # else
 405 #  define termStartChar         new_tc.c_cc[VSTART]
 406 # endif
 407 # ifndef        VSTOP
 408 extern cc_t termStopChar;
 409 # else
 410 #  define termStopChar          new_tc.c_cc[VSTOP]
 411 # endif
 412 # ifndef        VEOL
 413 extern cc_t termForw1Char;
 414 # else
 415 #  define termForw1Char         new_tc.c_cc[VEOL]
 416 # endif
 417 # ifndef        VEOL2
 418 extern cc_t termForw2Char;
 419 # else
 420 #  define termForw2Char         new_tc.c_cc[VEOL]
 421 # endif
 422 # ifndef        VSTATUS
 423 extern cc_t termAytChar;
 424 #else
 425 #  define termAytChar           new_tc.c_cc[VSTATUS]
 426 #endif
 427
 428 /* Ring buffer structures which are shared */
 429
 430 extern Ring
 431     netoring,
 432     netiring,
 433     ttyoring,
 434     ttyiring;
 435
 436 extern int resettermname;
 437 extern int linemode;
 438 #ifdef KLUDGELINEMODE
 439 extern int kludgelinemode;
 440 #endif
 441 extern int want_status_response;