mdw@git.distorted.org.uk Git - become/blob - src/class.h

   1 /* -*-c-*-
   2  *
   3  * $Id: class.h,v 1.2 1997/08/04 10:24:21 mdw Exp $
   4  *
   5  * Handling classes of things nicely
   6  *
   7  * (c) 1997 EBI
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of `become'
  13  *
  14  * `Become' is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * `Become' is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with `become'; if not, write to the Free Software Foundation,
  26  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27  */
  28
  29 /*----- Revision history --------------------------------------------------*
  30  *
  31  * $Log: class.h,v $
  32  * Revision 1.2  1997/08/04 10:24:21  mdw
  33  * Sources placed under CVS control.
  34  *
  35  * Revision 1.1  1997/07/21  13:47:52  mdw
  36  * Initial revision
  37  *
  38  */
  39
  40 #ifndef CLASS_H
  41 #define CLASS_H
  42
  43 #ifdef __cplusplus
  44   extern "C" {
  45 #endif
  46
  47 /*----- Required headers --------------------------------------------------*/
  48
  49 #include <sys/types.h>
  50 #include <sys/socket.h>
  51 #include <netinet/in.h>
  52 #include <arpa/inet.h>
  53
  54 #ifndef SYM_H
  55 #  include "sym.h"
  56 #endif
  57
  58 /*----- Data structures ---------------------------------------------------*/
  59
  60 /* --- Class types --- */
  61
  62 enum {
  63   clType_user = 1,                      /* Class of users */
  64   clType_command = 2,                   /* Class of command strings */
  65   clType_host = 4,                      /* Class of host names */
  66   clType_all = 7,                       /* All of the above (maintain me) */
  67   clType__limit                         /* First undefined class type */
  68 };
  69
  70 /* --- Class block --- */
  71
  72 typedef struct classdef {
  73   unsigned type;                        /* Type of this class */
  74   unsigned ref;                         /* Reference count */
  75   sym_table *t;                         /* Symbol table for this class */
  76 } classdef;
  77
  78 /*----- Global variables --------------------------------------------------*/
  79
  80 extern classdef *class_all;             /* The match-everything class */
  81
  82 /*----- Functions provided ------------------------------------------------*/
  83
  84 /* --- @class_create@ --- *
  85  *
  86  * Arguments:   @unsigned type@ = type of the class to create
  87  *              @sym_table *t@ = pointer to symbol table which stores info
  88  *
  89  * Returns:     Pointer to a @classdef@ which maintains the class's info.
  90  *
  91  * Use:         Creates a new class definition.  The new definition has one
  92  *              reference attached to it (which is the one you get returned).
  93  */
  94
  95 extern classdef *class_create(unsigned /*type*/, sym_table */*t*/);
  96
  97 /* --- @class_inc@ --- *
  98  *
  99  * Arguments:   @classdef *c@ = pointer to a class block
 100  *
 101  * Returns:     ---
 102  *
 103  * Use:         Adds a reference to the class definition.
 104  */
 105
 106 extern void class_inc(classdef */*c*/);
 107
 108 /* --- @class_dec@ --- *
 109  *
 110  * Arguments:   @classdef *c@ = pointer to a class block
 111  *
 112  * Returns:     ---
 113  *
 114  * Use:         Removes a reference to a class block.
 115  */
 116
 117 extern void class_dec(classdef */*c*/);
 118
 119 /* --- @class_userMatch@ --- *
 120  *
 121  * Arguments:   @classdef *c@ = pointer to a class block
 122  *              @int u@ = uid number to check against
 123  *
 124  * Returns:     Zero if no match, nonzero if it matched.
 125  *
 126  * Use:         Looks to see if a user is in a group.
 127  */
 128
 129 extern int class_userMatch(classdef */*c*/, int /*u*/);
 130
 131 /* --- @class_commandMatch@ --- *
 132  *
 133  * Arguments:   @classdef *c@ = pointer to a class block
 134  *              @const char *p@ = pointer to command string to match
 135  *
 136  * Returns:     Zero for no match, nonzero if it matched.
 137  *
 138  * Use:         Tries to match a string against the wildcard patterns in the
 139  *              given class.  Note that this involves examining all the
 140  *              items, so it's not too quick.  Then again, you don't have
 141  *              big command classes, do you...?
 142  */
 143
 144 extern int class_commandMatch(classdef */*c*/, const char */*p*/);
 145
 146 /* --- @class_hostMatch@ --- *
 147  *
 148  * Arguments:   @classdef *c@ = pointer to class block
 149  *              @struct in_addr addr@ = IP address to match
 150  *
 151  * Returns:     Zero for no match, nonzero if it matched.
 152  *
 153  * Use:         Tries to match an IP address against the patterns and masks
 154  *              in the given class.
 155  */
 156
 157 extern int class_hostMatch(classdef */*c*/, struct in_addr /*addr*/);
 158
 159 /* --- @class_dump@ --- *
 160  *
 161  * Arguments:   @classdef *c@ = pointer to a class block
 162  *
 163  * Returns:     ---
 164  *
 165  * Use:         Dumps the contents of a class to a stream.
 166  */
 167
 168 extern void class_dump(classdef */*c*/);
 169
 170 /*----- That's all, folks -------------------------------------------------*/
 171
 172 #ifdef __cplusplus
 173   }
 174 #endif
 175
 176 #endif
 177