authsyscommon.c

   1 /*
   2 ** Copyright 1998 - 2004 Double Precision, Inc.  See COPYING for
   3 ** distribution information.
   4 */
   5
   6 #if     HAVE_CONFIG_H
   7 #include        "courier_auth_config.h"
   8 #endif
   9 #include        <stdio.h>
  10 #include        <stdlib.h>
  11 #include        <string.h>
  12 #include        <errno.h>
  13 #include        <pwd.h>
  14 #if     HAVE_UNISTD_H
  15 #include        <unistd.h>
  16 #endif
  17
  18 #include        "auth.h"
  19 #include        "authstaticlist.h"
  20 #include        "courierauthdebug.h"
  21
  22 static const char rcsid[]="$Id: authsyscommon.c,v 1.2 2005/02/20 04:41:20 mrsam Exp $";
  23
  24
  25 struct callback_info {
  26         const char *pass;
  27         int (*callback_func)(struct authinfo *, void *);
  28         void *callback_arg;
  29         };
  30
  31 static int check_pw(struct authinfo *a, void *v)
  32 {
  33         struct callback_info *ci=(struct callback_info *)v;
  34         int rc;
  35
  36         if (a->passwd == NULL)
  37         {
  38                 DPRINTF("no password available to compare");
  39                 errno=EPERM;
  40                 return (-1);
  41         }
  42
  43         if (authcheckpassword(ci->pass, a->passwd))
  44         {
  45                 errno=EPERM;
  46                 return (-1);
  47         }
  48         a->clearpasswd=ci->pass;
  49         rc=(*ci->callback_func)(a, ci->callback_arg);
  50         a->clearpasswd=NULL;
  51         return rc;
  52 }
  53
  54 int auth_sys_common( int (*auth_pre_func)(const char *,
  55                                           const char *,
  56                                           int (*)(struct authinfo *,
  57                                                   void *),
  58                                           void *),
  59                      const char *user,
  60                      const char *pass,
  61                      const char *service,
  62                      int (*callback_func)(struct authinfo *, void *),
  63                      void *callback_arg)
  64 {
  65         struct callback_info ci;
  66
  67         ci.pass=pass;
  68         ci.callback_func=callback_func;
  69         ci.callback_arg=callback_arg;
  70         return (*auth_pre_func)(user, service, check_pw, &ci);
  71 }
  72