preauthshadow.c

   1 /*
   2 ** Copyright 1998 - 2005 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        <time.h>
  10 #include        <stdio.h>
  11 #include        <stdlib.h>
  12 #include        <string.h>
  13 #include        <errno.h>
  14 #include        <pwd.h>
  15 #if     HAVE_UNISTD_H
  16 #include        <unistd.h>
  17 #endif
  18 #if     HAVE_SHADOW_H
  19 #include        <shadow.h>
  20 #endif
  21
  22
  23 #include        "auth.h"
  24 #include        "courierauthdebug.h"
  25
  26 static const char rcsid[]="$Id: preauthshadow.c,v 1.9 2005/11/17 01:29:03 mrsam Exp $";
  27
  28 int auth_shadow_pre(const char *userid, const char *service,
  29         int (*callback)(struct authinfo *, void *),
  30                         void *arg)
  31 {
  32 struct authinfo auth;
  33 struct passwd *pw;
  34 struct spwd *spw;
  35 long today;
  36
  37         memset(&auth, 0, sizeof(auth));
  38
  39         if ((pw=getpwnam(userid)) == NULL)
  40         {
  41                 if (errno == ENOMEM)    return 1;
  42                 return -1;
  43         }
  44
  45         if ((spw=getspnam(userid)) == NULL)
  46         {
  47                 if (errno == ENOMEM)    return 1;
  48                 return -1;
  49         }
  50
  51         today = (long)time(NULL)/(24L*60*60);
  52
  53         if ((spw->sp_expire > 0) && (today > spw->sp_expire))
  54         {
  55                 DPRINTF("authshadow: %s - account expired", userid);
  56                 return -1;                      /* account expired */
  57         }
  58
  59         if ((spw->sp_lstchg != -1) && (spw->sp_max != -1) &&
  60                 ((spw->sp_lstchg + spw->sp_max) < today))
  61         {
  62                 DPRINTF("authshadow: %s - password expired", userid);
  63                 return -1;                      /* password expired */
  64         }
  65
  66         auth.sysusername=userid;
  67         auth.sysgroupid=pw->pw_gid;
  68         auth.homedir=pw->pw_dir;
  69         auth.address=userid;
  70         auth.fullname=pw->pw_gecos;
  71         auth.passwd=spw->sp_pwdp;
  72
  73         courier_authdebug_authinfo("DEBUG: authshadow: ", &auth, 0, pw->pw_passwd);
  74         return ((*callback)(&auth, arg));
  75 }