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 /*----- Revision history --------------------------------------------------*
  30  *
  31  * $Log: userdb.h,v $
  32  * Revision 1.5  2003/10/12 00:14:55  mdw
  33  * Major overhaul.  Now uses DSA signatures rather than the bogus symmetric
  34  * encrypt-and-hope thing.  Integrated with mLib and Catacomb.
  35  *
  36  * Revision 1.4  1998/01/12 16:46:38  mdw
  37  * Fix copyright date.
  38  *
  39  * Revision 1.3  1997/08/20  16:25:08  mdw
  40  * Rename `userdb_reinit' to `userdb_end' for more sensible restart.
  41  *
  42  * Revision 1.2  1997/08/04 10:24:26  mdw
  43  * Sources placed under CVS control.
  44  *
  45  * Revision 1.1  1997/07/21  13:47:42  mdw
  46  * Initial revision
  47  *
  48  */
  49
  50 #ifndef USERDB_H
  51 #define USERDB_H
  52
  53 #ifdef __cplusplus
  54   extern "C" {
  55 #endif
  56
  57 /*----- Required headers --------------------------------------------------*/
  58
  59 #include <grp.h>
  60 #include <pwd.h>
  61
  62 #include <mLib/sym.h>
  63
  64 /*----- Type definitions --------------------------------------------------*/
  65
  66 /* --- Iterator objects --- */
  67
  68 typedef sym_iter userdb_iter;
  69
  70 /*----- User and group block manipulation ---------------------------------*/
  71
  72 /* --- @userdb_copyUser@ --- *
  73  *
  74  * Arguments:   @struct passwd *pw@ = pointer to block to copy
  75  *
  76  * Returns:     Pointer to the copy.
  77  *
  78  * Use:         Copies a user block.  The copy is `deep' so all the strings
  79  *              are copied too.  Free the copy with @userdb_freeUser@ when
  80  *              you don't want it any more.
  81  */
  82
  83 extern struct passwd *userdb_copyUser(struct passwd */*pw*/);
  84
  85 /* --- @userdb_freeUser@ --- *
  86  *
  87  * Arguments:   @void *rec@ = pointer to a user record
  88  *
  89  * Returns:     ---
  90  *
  91  * Use:         Frees a user record.
  92  */
  93
  94 extern void userdb_freeUser(void */*rec*/);
  95
  96 /* --- @userdb_copyGroup@ --- *
  97  *
  98  * Arguments:   @struct group *gr@ = pointer to group block
  99  *
 100  * Returns:     Pointer to copied block
 101  *
 102  * Use:         Copies a group block.  The copy is `deep' so all the strings
 103  *              are copied too.  Free the copy with @userdb_freeGroup@ when
 104  *              you don't want it any more.
 105  */
 106
 107 extern struct group *userdb_copyGroup(struct group */*gr*/);
 108
 109 /* --- @userdb_freeGroup@ --- *
 110  *
 111  * Arguments:   @void *rec@ = pointer to a group record
 112  *
 113  * Returns:     ---
 114  *
 115  * Use:         Frees a group record.
 116  */
 117
 118 extern void userdb_freeGroup(void */*rec*/);
 119
 120 /*----- Internal user database mapping ------------------------------------*/
 121
 122 /* --- @userdb_local@ --- *
 123  *
 124  * Arguments:   ---
 125  *
 126  * Returns:     ---
 127  *
 128  * Use:         Reads the local list of users into the maps.
 129  */
 130
 131 extern void userdb_local(void);
 132
 133 /* --- @userdb_yp@ --- *
 134  *
 135  * Arguments:   ---
 136  *
 137  * Returns:     ---
 138  *
 139  * Use:         Fetches the YP database of users.
 140  */
 141
 142 extern void userdb_yp(void);
 143
 144 /* --- @userdb_userByName@, @userdb_userById@ --- *
 145  *
 146  * Arguments:   @const char *name@ = pointer to user's name
 147  *              @uid_t id@ = user id to find
 148  *
 149  * Returns:     Pointer to user block, or zero if not found.
 150  *
 151  * Use:         Looks up a user by name or id.
 152  */
 153
 154 extern struct passwd *userdb_userByName(const char */*name*/);
 155 extern struct passwd *userdb_userById(uid_t /*id*/);
 156
 157 /* --- @userdb_iterateUsers@, @userdb_iterateUsers_r@ --- *
 158  *
 159  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator object
 160  *
 161  * Returns:     ---
 162  *
 163  * Use:         Initialises an iteration for the user database.
 164  */
 165
 166 extern void userdb_iterateUsers(void);
 167 extern void userdb_iterateUsers_r(userdb_iter */*i*/);
 168
 169 /* --- @userdb_nextUser@, @userdb_nextUser_r@ --- *
 170  *
 171  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator oject
 172  *
 173  * Returns:     Pointer to the next user block, or null.
 174  *
 175  * Use:         Returns another user block.
 176  */
 177
 178 extern struct passwd *userdb_nextUser(void);
 179 extern struct passwd *userdb_nextUser_r(userdb_iter */*i*/);
 180
 181 /* --- @userdb_groupByName@, @userdb_groupById@ --- *
 182  *
 183  * Arguments:   @const char *name@ = pointer to group's name
 184  *              @gid_t id@ = group id to find
 185  *
 186  * Returns:     Pointer to group block, or zero if not found.
 187  *
 188  * Use:         Looks up a group by name or id.
 189  */
 190
 191 extern struct group *userdb_groupByName(const char */*name*/);
 192 extern struct group *userdb_groupById(gid_t /*id*/);
 193
 194 /* --- @userdb_iterateGroups@, @userdb_iterateGroups_r@ --- *
 195  *
 196  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator object
 197  *
 198  * Returns:     ---
 199  *
 200  * Use:         Initialises an iteration for the group database.
 201  */
 202
 203 extern void userdb_iterateGroups(void);
 204 extern void userdb_iterateGroups_r(userdb_iter */*i*/);
 205
 206 /* --- @userdb_nextGroup@, @userdb_nextGroup_r@ --- *
 207  *
 208  * Arguments:   @userdb_iter *i@ = pointer to a symbol table iterator oject
 209  *
 210  * Returns:     Pointer to the next group block, or null.
 211  *
 212  * Use:         Returns another group block.
 213  */
 214
 215 extern struct group *userdb_nextGroup(void);
 216 extern struct group *userdb_nextGroup_r(userdb_iter */*i*/);
 217
 218 /* --- @userdb_init@ --- *
 219  *
 220  * Arguments:   ---
 221  *
 222  * Returns:     ---
 223  *
 224  * Use:         Initialises the user database.
 225  */
 226
 227 extern void userdb_init(void);
 228
 229 /* --- @userdb_end@ --- *
 230  *
 231  * Arguments:   ---
 232  *
 233  * Returns:     ---
 234  *
 235  * Use:         Closes down the user database.
 236  */
 237
 238 extern void userdb_end(void);
 239
 240 /*----- That's all, folks -------------------------------------------------*/
 241
 242 #ifdef __cplusplus
 243   }
 244 #endif
 245
 246 #endif