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

   1 /* -*-c-*-
   2  *
   3  * $Id*
   4  *
   5  * User database management
   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 USERDB_H
  30 #define USERDB_H
  31
  32 #ifdef __cplusplus
  33   extern "C" {
  34 #endif
  35
  36 /*----- Required headers --------------------------------------------------*/
  37
  38 #include <grp.h>
  39 #include <pwd.h>
  40
  41 #include <mLib/sym.h>
  42
  43 /*----- Type definitions --------------------------------------------------*/
  44
  45 /* --- Iterator objects --- */
  46
  47 typedef sym_iter userdb_iter;
  48
  49 /*----- User and group block manipulation ---------------------------------*/
  50
  51 /* --- @userdb_copyUser@ --- *
  52  *
  53  * Arguments:   @struct passwd *pw@ = pointer to block to copy
  54  *
  55  * Returns:     Pointer to the copy.
  56  *
  57  * Use:         Copies a user block.  The copy is `deep' so all the strings
  58  *              are copied too.  Free the copy with @userdb_freeUser@ when
  59  *              you don't want it any more.
  60  */
  61
  62 extern struct passwd *userdb_copyUser(struct passwd */*pw*/);
  63
  64 /* --- @userdb_freeUser@ --- *
  65  *
  66  * Arguments:   @void *rec@ = pointer to a user record
  67  *
  68  * Returns:     ---
  69  *
  70  * Use:         Frees a user record.
  71  */
  72
  73 extern void userdb_freeUser(void */*rec*/);
  74
  75 /* --- @userdb_copyGroup@ --- *
  76  *
  77  * Arguments:   @struct group *gr@ = pointer to group block
  78  *
  79  * Returns:     Pointer to copied block
  80  *
  81  * Use:         Copies a group block.  The copy is `deep' so all the strings
  82  *              are copied too.  Free the copy with @userdb_freeGroup@ when
  83  *              you don't want it any more.
  84  */
  85
  86 extern struct group *userdb_copyGroup(struct group */*gr*/);
  87
  88 /* --- @userdb_freeGroup@ --- *
  89  *
  90  * Arguments:   @void *rec@ = pointer to a group record
  91  *
  92  * Returns:     ---
  93  *
  94  * Use:         Frees a group record.
  95  */
  96
  97 extern void userdb_freeGroup(void */*rec*/);
  98
  99 /*----- Internal user database mapping ------------------------------------*/
 100
 101 /* --- @userdb_local@ --- *
 102  *
 103  * Arguments:   ---
 104  *
 105  * Returns:     ---
 106  *
 107  * Use:         Reads the local list of users into the maps.
 108  */
 109
 110 extern void userdb_local(void);
 111
 112 /* --- @userdb_yp@ --- *
 113  *
 114  * Arguments:   ---
 115  *
 116  * Returns:     ---
 117  *
 118  * Use:         Fetches the YP database of users.
 119  */
 120
 121 extern void userdb_yp(void);
 122
 123 /* --- @userdb_userByName@, @userdb_userById@ --- *
 124  *
 125  * Arguments:   @const char *name@ = pointer to user's name
 126  *              @uid_t id@ = user id to find
 127  *
 128  * Returns:     Pointer to user block, or zero if not found.
 129  *
 130  * Use:         Looks up a user by name or id.
 131  */
 132
 133 extern struct passwd *userdb_userByName(const char */*name*/);
 134 extern struct passwd *userdb_userById(uid_t /*id*/);
 135
 136 /* --- @userdb_iterateUsers@, @userdb_iterateUsers_r@ --- *
 137  *
 138  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator object
 139  *
 140  * Returns:     ---
 141  *
 142  * Use:         Initialises an iteration for the user database.
 143  */
 144
 145 extern void userdb_iterateUsers(void);
 146 extern void userdb_iterateUsers_r(userdb_iter */*i*/);
 147
 148 /* --- @userdb_nextUser@, @userdb_nextUser_r@ --- *
 149  *
 150  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator oject
 151  *
 152  * Returns:     Pointer to the next user block, or null.
 153  *
 154  * Use:         Returns another user block.
 155  */
 156
 157 extern struct passwd *userdb_nextUser(void);
 158 extern struct passwd *userdb_nextUser_r(userdb_iter */*i*/);
 159
 160 /* --- @userdb_groupByName@, @userdb_groupById@ --- *
 161  *
 162  * Arguments:   @const char *name@ = pointer to group's name
 163  *              @gid_t id@ = group id to find
 164  *
 165  * Returns:     Pointer to group block, or zero if not found.
 166  *
 167  * Use:         Looks up a group by name or id.
 168  */
 169
 170 extern struct group *userdb_groupByName(const char */*name*/);
 171 extern struct group *userdb_groupById(gid_t /*id*/);
 172
 173 /* --- @userdb_iterateGroups@, @userdb_iterateGroups_r@ --- *
 174  *
 175  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator object
 176  *
 177  * Returns:     ---
 178  *
 179  * Use:         Initialises an iteration for the group database.
 180  */
 181
 182 extern void userdb_iterateGroups(void);
 183 extern void userdb_iterateGroups_r(userdb_iter */*i*/);
 184
 185 /* --- @userdb_nextGroup@, @userdb_nextGroup_r@ --- *
 186  *
 187  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator oject
 188  *
 189  * Returns:     Pointer to the next group block, or null.
 190  *
 191  * Use:         Returns another group block.
 192  */
 193
 194 extern struct group *userdb_nextGroup(void);
 195 extern struct group *userdb_nextGroup_r(userdb_iter */*i*/);
 196
 197 /* --- @userdb_init@ --- *
 198  *
 199  * Arguments:   ---
 200  *
 201  * Returns:     ---
 202  *
 203  * Use:         Initialises the user database.
 204  */
 205
 206 extern void userdb_init(void);
 207
 208 /* --- @userdb_end@ --- *
 209  *
 210  * Arguments:   ---
 211  *
 212  * Returns:     ---
 213  *
 214  * Use:         Closes down the user database.
 215  */
 216
 217 extern void userdb_end(void);
 218
 219 /*----- That's all, folks -------------------------------------------------*/
 220
 221 #ifdef __cplusplus
 222   }
 223 #endif
 224
 225 #endif