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1 // global.c |
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2 // |
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3 // © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved. |
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4 // |
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5 /* |
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6 * Copyright (c) 1989, 1993 |
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7 * The Regents of the University of California. All rights reserved. |
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8 * |
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9 * Redistribution and use in source and binary forms, with or without |
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10 * modification, are permitted provided that the following conditions |
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11 * are met: |
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12 * 1. Redistributions of source code must retain the above copyright |
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13 * notice, this list of conditions and the following disclaimer. |
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14 * 2. Redistributions in binary form must reproduce the above copyright |
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15 * notice, this list of conditions and the following disclaimer in the |
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16 * documentation and/or other materials provided with the distribution. |
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17 * 3. Neither the name of the University nor the names of its contributors |
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18 * may be used to endorse or promote products derived from this software |
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19 * without specific prior written permission. |
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20 * |
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21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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31 * SUCH DAMAGE. |
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32 */ |
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33 |
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34 /* a *lot* of ugly global definitions that really should be removed... |
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35 */ |
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36 |
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37 #include "telnetd.h" |
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38 |
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39 #ifndef __SYMBIAN32__ |
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40 __RCSID("$Heimdal: global.c,v 1.13 2001/07/19 16:00:42 assar Exp $" |
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41 "$NetBSD: global.c,v 1.2 2003/08/07 09:15:29 agc Exp $"); |
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42 #endif |
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43 |
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44 /* |
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45 * Telnet server variable declarations |
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46 */ |
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47 char options[256]; |
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48 char do_dont_resp[256]; |
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49 char will_wont_resp[256]; |
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50 int linemode; /* linemode on/off */ |
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51 int flowmode; /* current flow control state */ |
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52 int restartany; /* restart output on any character state */ |
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53 #ifdef DIAGNOSTICS |
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54 int diagnostic; /* telnet diagnostic capabilities */ |
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55 #endif /* DIAGNOSTICS */ |
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56 int require_otp; |
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57 |
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58 slcfun slctab[NSLC + 1]; /* slc mapping table */ |
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59 |
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60 char *terminaltype; |
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61 |
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62 /* |
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63 * I/O data buffers, pointers, and counters. |
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64 */ |
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65 char ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp; |
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66 |
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67 char netibuf[BUFSIZ], *netip; |
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68 |
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69 char netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp; |
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70 char *neturg; /* one past last bye of urgent data */ |
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71 |
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72 int pcc, ncc; |
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73 |
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74 int ourpty, net; |
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75 int SYNCHing; /* we are in TELNET SYNCH mode */ |
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76 |
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77 /* |
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78 * The following are some clocks used to decide how to interpret |
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79 * the relationship between various variables. |
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80 */ |
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81 |
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82 struct clocks_t clocks; |
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83 |
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84 |
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85 /* whether to log unauthenticated login attempts */ |
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86 int log_unauth; |
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87 |
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88 /* do not print warning if connection is not encrypted */ |
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89 int no_warn; |
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90 |
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91 /* |
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92 * This function appends data to nfrontp and advances nfrontp. |
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93 */ |
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94 |
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95 int |
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96 output_data (const char *format, ...) |
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97 { |
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98 va_list args; |
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99 int remaining, ret; |
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100 |
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101 va_start(args, format); |
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102 remaining = BUFSIZ - (nfrontp - netobuf); |
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103 ret = vsnprintf (nfrontp, |
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104 remaining, |
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105 format, |
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106 args); |
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107 nfrontp += MIN(ret, remaining-1); |
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108 va_end(args); |
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109 return ret; |
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110 } |