apps/lib/stdlibc/pwd.c

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #include <sys/types.h>
  20 #include <pwd.h>
  21 #include <llist.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25 static llist_t pwd_list = NULL;
  26 static size_t pwd_idx = 0;
  27
  28 static void pwd_init() {
  29   //char *filename;
  30   //FILE *fd = fopen("/etc/passwd","r");
  31   /// @todo Read from file and do some scanf or regex stuff
  32   //fclose(fd);
  33 }
  34
  35 struct passwd *getpwnam(const char *name) {
  36   if (pwd_list==NULL) pwd_init();
  37
  38   size_t i;
  39   struct passwd *pwd;
  40   for (i=0;(pwd = llist_get(pwd_list,i));i++) {
  41     if (strcmp(pwd->pw_name,name)==0) return pwd;
  42   }
  43   return NULL;
  44 }
  45
  46 struct passwd *getpwuid(uid_t uid) {
  47   if (pwd_list==NULL) pwd_init();
  48
  49   size_t i;
  50   struct passwd *pwd;
  51   for (i=0;(pwd = llist_get(pwd_list,i));i++) {
  52     if (pwd->pw_uid==uid) return pwd;
  53   }
  54   return NULL;
  55 }
  56
  57 struct passwd *getpwent() {
  58   return llist_get(pwd_list,pwd_idx++);
  59 }
  60
  61 void setpwent() {
  62   pwd_idx = 0;
  63 }