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

   1 /* -*-c-*-
   2  *
   3  * $Id: class.h,v 1.1 1997/07/21 13:47:52 mdw Exp $
   4  *
   5  * Handling classes of things nicely
   6  *
   7  * (c) 1997 EBI
   8  */
   9
  10 /*----- Licencing 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
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 /*----- Revision history --------------------------------------------------*
  30  *
  31  * $Log: class.h,v $
  32  * Revision 1.1  1997/07/21 13:47:52  mdw
  33  * Initial revision
  34  *
  35  */
  36
  37 #ifndef CLASS_H
  38 #define CLASS_H
  39
  40 #ifdef __cplusplus
  41   extern "C" {
  42 #endif
  43
  44 /*----- Required headers --------------------------------------------------*/
  45
  46 #include <sys/types.h>
  47 #include <sys/socket.h>
  48 #include <netinet/in.h>
  49 #include <arpa/inet.h>
  50
  51 #ifndef SYM_H
  52 #  include "sym.h"
  53 #endif
  54
  55 /*----- Data structures ---------------------------------------------------*/
  56
  57 /* --- Class types --- */
  58
  59 enum {
  60   clType_user = 1,                      /* Class of users */
  61   clType_command = 2,                   /* Class of command strings */
  62   clType_host = 4,                      /* Class of host names */
  63   clType_all = 7,                       /* All of the above (maintain me) */
  64   clType__limit                         /* First undefined class type */
  65 };
  66
  67 /* --- Class block --- */
  68
  69 typedef struct classdef {
  70   unsigned type;                        /* Type of this class */
  71   unsigned ref;                         /* Reference count */
  72   sym_table *t;                         /* Symbol table for this class */
  73 } classdef;
  74
  75 /*----- Global variables --------------------------------------------------*/
  76
  77 extern classdef *class_all;             /* The match-everything class */
  78
  79 /*----- Functions provided ------------------------------------------------*/
  80
  81 /* --- @class_create@ --- *
  82  *
  83  * Arguments:   @unsigned type@ = type of the class to create
  84  *              @sym_table *t@ = pointer to symbol table which stores info
  85  *
  86  * Returns:     Pointer to a @classdef@ which maintains the class's info.
  87  *
  88  * Use:         Creates a new class definition.  The new definition has one
  89  *              reference attached to it (which is the one you get returned).
  90  */
  91
  92 extern classdef *class_create(unsigned /*type*/, sym_table */*t*/);
  93
  94 /* --- @class_inc@ --- *
  95  *
  96  * Arguments:   @classdef *c@ = pointer to a class block
  97  *
  98  * Returns:     ---
  99  *
 100  * Use:         Adds a reference to the class definition.
 101  */
 102
 103 extern void class_inc(classdef */*c*/);
 104
 105 /* --- @class_dec@ --- *
 106  *
 107  * Arguments:   @classdef *c@ = pointer to a class block
 108  *
 109  * Returns:     ---
 110  *
 111  * Use:         Removes a reference to a class block.
 112  */
 113
 114 extern void class_dec(classdef */*c*/);
 115
 116 /* --- @class_userMatch@ --- *
 117  *
 118  * Arguments:   @classdef *c@ = pointer to a class block
 119  *              @int u@ = uid number to check against
 120  *
 121  * Returns:     Zero if no match, nonzero if it matched.
 122  *
 123  * Use:         Looks to see if a user is in a group.
 124  */
 125
 126 extern int class_userMatch(classdef */*c*/, int /*u*/);
 127
 128 /* --- @class_commandMatch@ --- *
 129  *
 130  * Arguments:   @classdef *c@ = pointer to a class block
 131  *              @const char *p@ = pointer to command string to match
 132  *
 133  * Returns:     Zero for no match, nonzero if it matched.
 134  *
 135  * Use:         Tries to match a string against the wildcard patterns in the
 136  *              given class.  Note that this involves examining all the
 137  *              items, so it's not too quick.  Then again, you don't have
 138  *              big command classes, do you...?
 139  */
 140
 141 extern int class_commandMatch(classdef */*c*/, const char */*p*/);
 142
 143 /* --- @class_hostMatch@ --- *
 144  *
 145  * Arguments:   @classdef *c@ = pointer to class block
 146  *              @struct in_addr addr@ = IP address to match
 147  *
 148  * Returns:     Zero for no match, nonzero if it matched.
 149  *
 150  * Use:         Tries to match an IP address against the patterns and masks
 151  *              in the given class.
 152  */
 153
 154 extern int class_hostMatch(classdef */*c*/, struct in_addr /*addr*/);
 155
 156 /* --- @class_dump@ --- *
 157  *
 158  * Arguments:   @classdef *c@ = pointer to a class block
 159  *              @FILE *fp@ = pointer to a stream object
 160  *
 161  * Returns:     ---
 162  *
 163  * Use:         Dumps the contents of a class to a stream.
 164  */
 165
 166 extern void class_dump(classdef */*c*/, FILE */*fp*/);
 167
 168 /*----- That's all, folks -------------------------------------------------*/
 169
 170 #ifdef __cplusplus
 171   }
 172 #endif
 173
 174 #endif
 175