authldap.c

   1 /*
   2 ** Copyright 1998 - 2008 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        <ctype.h>
  12 #include        <string.h>
  13 #include        <errno.h>
  14
  15 #include        "auth.h"
  16 #include        "authldap.h"
  17 #include        "courierauth.h"
  18 #include        "courierauthstaticlist.h"
  19 #include        "courierauthdebug.h"
  20 #include        "libhmac/hmac.h"
  21
  22 static int auth_ldap_login(const char *service, char *authdata,
  23                            int (*callback_func)(struct authinfo *, void *),
  24                            void *callback_arg)
  25 {
  26         const char *user, *pass;
  27
  28         if ((user=strtok(authdata, "\n")) == 0 ||
  29                 (pass=strtok(0, "\n")) == 0)
  30         {
  31                 DPRINTF("incomplete authentication data");
  32                 errno=EPERM;
  33                 return (-1);
  34         }
  35
  36         return authldapcommon(service, user, pass, callback_func,
  37                               callback_arg);
  38 }
  39
  40 static int auth_ldap_cram(const char *service,
  41                           const char *authtype, char *authdata,
  42                           int (*callback_func)(struct authinfo *, void *),
  43                           void *callback_arg)
  44 {
  45         struct  cram_callback_info      cci;
  46
  47         if (auth_get_cram(authtype, authdata, &cci))
  48                 return (-1);
  49
  50         cci.callback_func=callback_func;
  51         cci.callback_arg=callback_arg;
  52
  53         return authldapcommon(service, cci.user, 0, &auth_cram_callback, &cci);
  54 }
  55
  56 int auth_ldap(const char *service, const char *authtype, char *authdata,
  57               int (*callback_func)(struct authinfo *, void *),
  58               void *callback_arg)
  59 {
  60         if (strcmp(authtype, AUTHTYPE_LOGIN) == 0)
  61                 return (auth_ldap_login(service, authdata,
  62                         callback_func, callback_arg));
  63
  64         return (auth_ldap_cram(service, authtype, authdata,
  65                         callback_func, callback_arg));
  66 }
  67
  68
  69 extern int auth_ldap_pre(const char *userid, const char *service,
  70         int (*callback)(struct authinfo *, void *),
  71                   void *arg);
  72
  73 static struct authstaticinfo authldap_info={
  74         "authldap",
  75         auth_ldap,
  76         auth_ldap_pre,
  77         authldapclose,
  78         auth_ldap_changepw,
  79         authldapclose,
  80         auth_ldap_enumerate};
  81
  82
  83 struct authstaticinfo *courier_authldap_init()
  84 {
  85         return &authldap_info;
  86 }