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

   1 /* -*-c-*-
   2  *
   3  * $Id: rule.h,v 1.7 2004/04/08 01:36:20 mdw Exp $
   4  *
   5  * Managing rule sets
   6  *
   7  * (c) 1998 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 #ifndef RULE_H
  30 #define RULE_H
  31
  32 #ifdef __cplusplus
  33   extern "C" {
  34 #endif
  35
  36 /*----- Required headers --------------------------------------------------*/
  37
  38 #include <sys/types.h>
  39 #include <sys/socket.h>
  40 #include <netinet/in.h>
  41 #include <arpa/inet.h>
  42
  43 #ifndef BECOME_H
  44 #  include "become.h"
  45 #endif
  46
  47 #ifndef CLASS_H
  48 #  include "class.h"
  49 #endif
  50
  51 /*----- Type definitions --------------------------------------------------*/
  52
  53 /* --- Rule block --- */
  54
  55 typedef struct rule {
  56   struct rule *next;                    /* Next rule in the list */
  57   class_node *host;                     /* Hosts this rule applies to */
  58   class_node *from;                     /* From users in this class */
  59   class_node *to;                       /* To users in this class */
  60   class_node *cmd;                      /* To run commands in this class */
  61 } rule;
  62
  63 /*----- Functions provided ------------------------------------------------*/
  64
  65 /* --- @rule_init@ --- *
  66  *
  67  * Arguments:   ---
  68  *
  69  * Returns:     ---
  70  *
  71  * Use:         Intialises the rule database.
  72  */
  73
  74 extern void rule_init(void);
  75
  76 /* --- @rule_end@ --- *
  77  *
  78  * Arguments:   ---
  79  *
  80  * Returns:     ---
  81  *
  82  * Use:         Empties the rule database.
  83  */
  84
  85 extern void rule_end(void);
  86
  87 /* --- @rule_list@ --- *
  88  *
  89  * Arguments:   ---
  90  *
  91  * Returns:     The list of rules.
  92  *
  93  * Use:         Returns the address of the first node in the rule list.
  94  */
  95
  96 extern rule *rule_list(void);
  97
  98 /* --- @rule_add@ --- *
  99  *
 100  * Arguments:   @class_node *host@ = class of hosts this rule applies to
 101  *              @class_node *from@ = class of users allowed to change
 102  *              @class_node *to@ = class of users allowed to be changed to
 103  *              @class_node *cmd@ = class of commands allowed
 104  *
 105  * Returns:     ---
 106  *
 107  * Use:         Registers another rule.
 108  */
 109
 110 extern void rule_add(class_node */*host*/, class_node */*from*/,
 111                      class_node */*to*/, class_node */*cmd*/);
 112
 113 /* --- @rule_check@ --- *
 114  *
 115  * Arguments:   @request *r@ = pointer to a request block
 116  *
 117  * Returns:     Zero if disallowed, nonzero if allowed.
 118  *
 119  * Use:         Checks a request to see if it's allowed.
 120  */
 121
 122 extern int rule_check(request */*r*/);
 123
 124 /* --- @rule_dump@ --- *
 125  *
 126  * Arguments:   ---
 127  *
 128  * Returns:     ---
 129  *
 130  * Use:         Dumps a map of the current ruleset to the trace output.
 131  */
 132
 133 extern void rule_dump(void);
 134
 135 /*----- That's all, folks -------------------------------------------------*/
 136
 137 #ifdef __cplusplus
 138   }
 139 #endif
 140
 141 #endif