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Annotation of src/usr.bin/telnet/externs.h, Revision 1.23

1.23    ! guenther    1: /*     $OpenBSD: externs.h,v 1.22 2014/07/20 08:12:45 guenther Exp $   */
1.3       art         2: /* $KTH: externs.h,v 1.16 1997/11/29 02:28:35 joda Exp $ */
1.2       niklas      3:
1.1       deraadt     4: /*
                      5:  * Copyright (c) 1988, 1990, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
1.11      millert    16:  * 3. Neither the name of the University nor the names of its contributors
1.1       deraadt    17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  *
1.3       art        32:  *     @(#)externs.h   8.3 (Berkeley) 5/30/95
1.1       deraadt    33:  */
                     34:
                     35: #define        SUBBUFSIZE      256
                     36:
                     37: extern int
                     38:     autologin,         /* Autologin enabled */
                     39:     skiprc,            /* Don't process the ~/.telnetrc file */
                     40:     eight,             /* use eight bit mode (binary in and/or out */
1.3       art        41:     binary,
1.12      otto       42:     family,            /* address family of peer */
1.1       deraadt    43:     flushout,          /* flush output */
                     44:     connected,         /* Are we connected to the other side? */
                     45:     globalmode,                /* Mode tty should be in */
                     46:     telnetport,                /* Are we connected to the telnet port? */
                     47:     localflow,         /* Flow control handled locally */
                     48:     restartany,                /* If flow control, restart output on any character */
                     49:     localchars,                /* we recognize interrupt/quit */
1.2       niklas     50:     donelclchars,      /* the user has set "localchars" */
1.1       deraadt    51:     showoptions,
                     52:     net,               /* Network file descriptor */
                     53:     tin,               /* Terminal input file descriptor */
                     54:     tout,              /* Terminal output file descriptor */
                     55:     crlf,              /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
                     56:     autoflush,         /* flush output when interrupting? */
                     57:     autosynch,         /* send interrupt characters with SYNCH? */
                     58:     SYNCHing,          /* Is the stream in telnet SYNCH mode? */
                     59:     donebinarytoggle,  /* the user has put us in binary */
                     60:     dontlecho,         /* do we suppress local echoing right now? */
                     61:     crmod,
                     62:     netdata,           /* Print out network data flow */
                     63:     prettydump,                /* Print "netdata" output in user readable format */
                     64:     termdata,          /* Print out terminal data flow */
1.3       art        65:     debug;             /* Debug level */
1.1       deraadt    66:
                     67: extern cc_t escape;    /* Escape to command mode */
                     68: extern cc_t rlogin;    /* Rlogin mode escape character */
                     69: #ifdef KLUDGELINEMODE
                     70: extern cc_t echoc;     /* Toggle local echoing */
                     71: #endif
                     72:
                     73: extern char
                     74:     *prompt;           /* Prompt for command. */
                     75:
                     76: extern char
                     77:     doopt[],
                     78:     dont[],
                     79:     will[],
                     80:     wont[],
                     81:     options[],         /* All the little options */
                     82:     *hostname;         /* Who are we connected to? */
1.15      claudio    83:
1.17      sthen      84: extern int     rtableid;       /* routing table to use */
1.1       deraadt    85:
                     86: /*
                     87:  * We keep track of each side of the option negotiation.
                     88:  */
                     89:
                     90: #define        MY_STATE_WILL           0x01
                     91: #define        MY_WANT_STATE_WILL      0x02
                     92: #define        MY_STATE_DO             0x04
                     93: #define        MY_WANT_STATE_DO        0x08
                     94:
                     95: /*
                     96:  * Macros to check the current state of things
                     97:  */
                     98:
                     99: #define        my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
                    100: #define        my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
                    101: #define my_want_state_is_do(opt)       (options[opt]&MY_WANT_STATE_DO)
                    102: #define my_want_state_is_will(opt)     (options[opt]&MY_WANT_STATE_WILL)
                    103:
                    104: #define        my_state_is_dont(opt)           (!my_state_is_do(opt))
                    105: #define        my_state_is_wont(opt)           (!my_state_is_will(opt))
                    106: #define my_want_state_is_dont(opt)     (!my_want_state_is_do(opt))
                    107: #define my_want_state_is_wont(opt)     (!my_want_state_is_will(opt))
                    108:
                    109: #define        set_my_state_do(opt)            {options[opt] |= MY_STATE_DO;}
                    110: #define        set_my_state_will(opt)          {options[opt] |= MY_STATE_WILL;}
                    111: #define        set_my_want_state_do(opt)       {options[opt] |= MY_WANT_STATE_DO;}
                    112: #define        set_my_want_state_will(opt)     {options[opt] |= MY_WANT_STATE_WILL;}
                    113:
                    114: #define        set_my_state_dont(opt)          {options[opt] &= ~MY_STATE_DO;}
                    115: #define        set_my_state_wont(opt)          {options[opt] &= ~MY_STATE_WILL;}
                    116: #define        set_my_want_state_dont(opt)     {options[opt] &= ~MY_WANT_STATE_DO;}
                    117: #define        set_my_want_state_wont(opt)     {options[opt] &= ~MY_WANT_STATE_WILL;}
                    118:
                    119: /*
1.7       pvalchev  120:  * Make everything symmetrical
1.1       deraadt   121:  */
                    122:
                    123: #define        HIS_STATE_WILL                  MY_STATE_DO
                    124: #define        HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
                    125: #define HIS_STATE_DO                   MY_STATE_WILL
                    126: #define HIS_WANT_STATE_DO              MY_WANT_STATE_WILL
                    127:
                    128: #define        his_state_is_do                 my_state_is_will
                    129: #define        his_state_is_will               my_state_is_do
                    130: #define his_want_state_is_do           my_want_state_is_will
                    131: #define his_want_state_is_will         my_want_state_is_do
                    132:
                    133: #define        his_state_is_dont               my_state_is_wont
                    134: #define        his_state_is_wont               my_state_is_dont
                    135: #define his_want_state_is_dont         my_want_state_is_wont
                    136: #define his_want_state_is_wont         my_want_state_is_dont
                    137:
                    138: #define        set_his_state_do                set_my_state_will
                    139: #define        set_his_state_will              set_my_state_do
                    140: #define        set_his_want_state_do           set_my_want_state_will
                    141: #define        set_his_want_state_will         set_my_want_state_do
                    142:
                    143: #define        set_his_state_dont              set_my_state_wont
                    144: #define        set_his_state_wont              set_my_state_dont
                    145: #define        set_his_want_state_dont         set_my_want_state_wont
                    146: #define        set_his_want_state_wont         set_my_want_state_dont
                    147:
                    148:
                    149: extern unsigned char
                    150:     NetTraceFile[];    /* Name of file where debugging output goes */
                    151: extern void
1.3       art       152:     SetNetTrace (char *);      /* Function to change where debugging goes */
1.1       deraadt   153:
                    154: extern jmp_buf
                    155:     peerdied,
                    156:     toplevel;          /* For error conditions. */
                    157:
1.3       art       158: /* commands.c */
                    159:
                    160: struct env_lst *env_define (unsigned char *, unsigned char *);
                    161: struct env_lst *env_find(unsigned char *var);
                    162: void env_init (void);
                    163: void env_undefine (unsigned char *);
                    164: void env_export (unsigned char *);
                    165: void env_unexport (unsigned char *);
                    166: void env_send (unsigned char *);
                    167: void env_list (void);
                    168: unsigned char * env_default(int init, int welldefined);
1.14      otto      169: unsigned char * env_getvalue(unsigned char *var, int exported_only);
1.3       art       170:
                    171: void set_escape_char(char *s);
                    172: unsigned long sourceroute(char *arg, char **cpp, int *lenp);
                    173:
                    174: #ifdef SIGINFO
                    175: void ayt_status(void);
                    176: #endif
                    177: int tn(int argc, char **argv);
                    178: void command(int top, char *tbuf, int cnt);
                    179:
                    180: /* main.c */
                    181:
                    182: void tninit(void);
                    183: void usage(void);
                    184:
                    185: /* network.c */
                    186:
                    187: void init_network(void);
                    188: int stilloob(void);
                    189: void setneturg(void);
                    190: int netflush(void);
                    191:
                    192: /* sys_bsd.c */
                    193:
                    194: void init_sys(void);
                    195: int TerminalSpecialChars(int c);
                    196: void TerminalDefaultChars(void);
                    197: cc_t *tcval(int func);
                    198: void TerminalSpeeds(long *input_speed, long *output_speed);
                    199: int TerminalWindowSize(long *rows, long *cols);
                    200: int NetClose(int fd);
                    201: void NetNonblockingIO(int fd, int onoff);
                    202: int process_rings(int netin, int netout, int netex, int ttyin, int ttyout,
                    203:                  int poll);
                    204:
                    205: /* telnet.c */
                    206:
                    207: void init_telnet(void);
                    208:
                    209: void tel_leave_binary(int rw);
                    210: void tel_enter_binary(int rw);
                    211: int opt_welldefined(char *ep);
                    212: int telrcv(void);
                    213: int rlogin_susp(void);
                    214: void intp(void);
                    215: void sendbrk(void);
                    216: void sendabort(void);
                    217: void sendsusp(void);
                    218: void sendeof(void);
                    219: void sendayt(void);
                    220:
                    221: void xmitAO(void);
                    222: void xmitEL(void);
                    223: void xmitEC(void);
                    224:
                    225:
                    226: void     Dump (char, unsigned char *, int);
                    227: void     printoption (char *, int, int);
                    228: void     sendnaws (void);
                    229: void     setconnmode (int);
                    230: void     setcommandmode (void);
                    231: void     setneturg (void);
                    232: void     sys_telnet_init (void);
                    233: void     telnet (char *);
                    234: void     tel_enter_binary (int);
                    235: void     TerminalNewMode (int);
                    236: void     TerminalRestoreState (void);
                    237: void     TerminalSaveState (void);
                    238: void     tninit (void);
                    239: void     willoption (int);
                    240: void     wontoption (int);
                    241:
                    242:
                    243: void     send_do (int, int);
                    244: void     send_dont (int, int);
                    245: void     send_will (int, int);
                    246: void     send_wont (int, int);
                    247:
                    248: void     lm_will (unsigned char *, int);
                    249: void     lm_wont (unsigned char *, int);
                    250: void     lm_do (unsigned char *, int);
                    251: void     lm_dont (unsigned char *, int);
                    252: void     lm_mode (unsigned char *, int, int);
                    253:
                    254: void     slc_init (void);
                    255: void     slcstate (void);
1.23    ! guenther  256: void     slc_mode_export (int);
1.3       art       257: void     slc_mode_import (int);
                    258: void     slc_import (int);
                    259: void     slc_export (void);
                    260: void     slc (unsigned char *, int);
                    261: void     slc_check (void);
                    262: void     slc_start_reply (void);
                    263: void     slc_add_reply (unsigned char, unsigned char, cc_t);
                    264: void     slc_end_reply (void);
                    265: int     slc_update (void);
                    266:
                    267: void     env_opt (unsigned char *, int);
                    268: void     env_opt_start (void);
                    269: void     env_opt_start_info (void);
                    270: void     env_opt_add (unsigned char *);
                    271: void     env_opt_end (int);
                    272:
                    273: unsigned char     *env_default (int, int);
1.14      otto      274: unsigned char     *env_getvalue (unsigned char *, int);
1.3       art       275:
                    276: int get_status (void);
                    277: int dosynch (void);
                    278:
                    279: cc_t *tcval (int);
                    280:
1.23    ! guenther  281: __dead void quit(void);
1.3       art       282:
1.18      guenther  283: /* genget.c */
                    284:
                    285: char   **genget(char *name, char **table, int stlen);
                    286: int    isprefix(char *s1, char *s2);
                    287: int    Ambiguous(void *s);
                    288:
1.3       art       289: /* terminal.c */
                    290:
                    291: void init_terminal(void);
                    292: int ttyflush(int drop);
                    293: int getconnmode(void);
                    294:
                    295: /* utilities.c */
                    296:
                    297: void SetNetTrace(char *file);
                    298: void Dump(char direction, unsigned char *buffer, int length);
                    299: void printoption(char *direction, int cmd, int option);
                    300: void optionstatus(void);
1.6       hin       301: void printsub(int direction, unsigned char *pointer, int length);
1.3       art       302: void EmptyTerminal(void);
                    303: void SetForExit(void);
1.20      guenther  304: __dead void Exit(int returnCode);
1.3       art       305: void ExitString(char *string, int returnCode);
1.1       deraadt   306:
1.3       art       307: extern struct  termios new_tc;
1.1       deraadt   308:
                    309: # define termEofChar           new_tc.c_cc[VEOF]
                    310: # define termEraseChar         new_tc.c_cc[VERASE]
                    311: # define termIntChar           new_tc.c_cc[VINTR]
                    312: # define termKillChar          new_tc.c_cc[VKILL]
                    313: # define termQuitChar          new_tc.c_cc[VQUIT]
                    314:
                    315: # ifndef       VSUSP
                    316: extern cc_t termSuspChar;
                    317: # else
                    318: #  define termSuspChar         new_tc.c_cc[VSUSP]
                    319: # endif
                    320: # if   defined(VFLUSHO) && !defined(VDISCARD)
                    321: #  define VDISCARD VFLUSHO
                    322: # endif
                    323: # ifndef       VDISCARD
                    324: extern cc_t termFlushChar;
                    325: # else
                    326: #  define termFlushChar                new_tc.c_cc[VDISCARD]
                    327: # endif
                    328: # ifndef VWERASE
                    329: extern cc_t termWerasChar;
                    330: # else
                    331: #  define termWerasChar                new_tc.c_cc[VWERASE]
                    332: # endif
                    333: # ifndef       VREPRINT
                    334: extern cc_t termRprntChar;
                    335: # else
                    336: #  define termRprntChar                new_tc.c_cc[VREPRINT]
                    337: # endif
                    338: # ifndef       VLNEXT
                    339: extern cc_t termLiteralNextChar;
                    340: # else
                    341: #  define termLiteralNextChar  new_tc.c_cc[VLNEXT]
                    342: # endif
                    343: # ifndef       VSTART
                    344: extern cc_t termStartChar;
                    345: # else
                    346: #  define termStartChar                new_tc.c_cc[VSTART]
                    347: # endif
                    348: # ifndef       VSTOP
                    349: extern cc_t termStopChar;
                    350: # else
                    351: #  define termStopChar         new_tc.c_cc[VSTOP]
                    352: # endif
                    353: # ifndef       VEOL
                    354: extern cc_t termForw1Char;
                    355: # else
                    356: #  define termForw1Char                new_tc.c_cc[VEOL]
                    357: # endif
                    358: # ifndef       VEOL2
                    359: extern cc_t termForw2Char;
                    360: # else
                    361: #  define termForw2Char                new_tc.c_cc[VEOL]
                    362: # endif
                    363: # ifndef       VSTATUS
                    364: extern cc_t termAytChar;
                    365: #else
                    366: #  define termAytChar          new_tc.c_cc[VSTATUS]
                    367: #endif
                    368:
                    369: /* Ring buffer structures which are shared */
                    370:
                    371: extern Ring
                    372:     netoring,
                    373:     netiring,
                    374:     ttyoring,
                    375:     ttyiring;