lustre/utils/gss/lgss_krb5_utils.h

   1 /*
   2  * Modifications for Lustre
   3  *
   4  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
   5  *
   6  * Author: Eric Mei <ericm@clusterfs.com>
   7  */
   8
   9 #ifndef LGSS_KRB5_UTILS_H
  10 #define LGSS_KRB5_UTILS_H
  11
  12 #ifndef _GNU_SOURCE
  13 #define _GNU_SOURCE
  14 #endif
  15 #include <string.h>
  16 #include <krb5.h>
  17
  18 #include "lgss_utils.h"
  19
  20 extern struct lgss_mech_type lgss_mech_krb5;
  21
  22 /*
  23  * convenient macros, these perhaps need further cleanup
  24  */
  25 #ifdef HAVE_KRB5
  26
  27 #define KEYTAB_ENTRY_MATCH(kte, name)                                           \
  28         (                                                                       \
  29          (kte).principal->data[0].length == (sizeof(name)-1) &&                 \
  30          strncmp((kte).principal->data[0].data, (name), sizeof(name)-1) == 0    \
  31         )
  32
  33 #define KRB5_FREE_UNPARSED_NAME(ctx, name)                                      \
  34         krb5_free_unparsed_name((ctx), (name));
  35
  36 #define KRB5_STRDUP(str)                                                        \
  37         strndup((str).data, (str).length)
  38
  39 #define KRB5_STRCMP(str, name)                                                  \
  40         (                                                                       \
  41          (str)->length != strlen(name) ||                                       \
  42          strncmp((str)->data, (name), (str)->length) != 0                       \
  43         )
  44
  45 #define KRB5_STRCASECMP(str, name)                                              \
  46         (                                                                       \
  47          (str)->length != strlen(name) ||                                       \
  48          strncasecmp((str)->data, (name), (str)->length) != 0                   \
  49         )
  50
  51 static inline
  52 char *lgss_krb5_strdup(krb5_data *kstr)
  53 {
  54         return strndup(kstr->data, kstr->length);
  55 }
  56
  57 static inline
  58 int lgss_krb5_strcmp(krb5_data *kstr, const char *str)
  59 {
  60         return (kstr->length != strlen(str) ||
  61                 memcmp(kstr->data, str, kstr->length) != 0);
  62 }
  63
  64 static inline
  65 int lgss_krb5_strcasecmp(krb5_data *kstr, const char *str)
  66 {
  67         return (kstr->length != strlen(str) ||
  68                 strncasecmp(kstr->data, str, kstr->length) != 0);
  69 }
  70
  71 #else /* !HAVE_KRB5 */
  72
  73 #define KEYTAB_ENTRY_MATCH(kte, name)                                           \
  74         (                                                                       \
  75          strlen((kte).principal->name.name_string.val[0]) ==                    \
  76          (sizeof(name)-1) &&                                                    \
  77          strncmp(kte.principal->name.name_string.val[0], (name),                \
  78                  sizeof(name)-1) == 0                                           \
  79         )
  80
  81 #define KRB5_FREE_UNPARSED_NAME(ctx, name)                                      \
  82         free(pname);
  83
  84 #define KRB5_STRDUP(str)                                                        \
  85         strdup(str)
  86
  87 #define KRB5_STRCMP(str, name)                                                  \
  88         strcmp((str), (name))
  89
  90 #define KRB5_STRCASECMP(str, name)                                              \
  91         strcmp((str), (name))
  92
  93 #endif /* HAVE_KRB5 */
  94
  95 #endif /* LGSS_KRB5_UTILS_H */