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_null;
  21 extern struct lgss_mech_type lgss_mech_sk;
  22 extern struct lgss_mech_type lgss_mech_krb5;
  23
  24 /*
  25  * convenient macros, these perhaps need further cleanup
  26  */
  27 #ifdef HAVE_KRB5
  28
  29 #define KEYTAB_ENTRY_MATCH(kte, name)                                           \
  30         (                                                                       \
  31          (kte).principal->data[0].length == (sizeof(name)-1) &&                 \
  32          strncmp((kte).principal->data[0].data, (name), sizeof(name)-1) == 0    \
  33         )
  34
  35 #define KRB5_FREE_UNPARSED_NAME(ctx, name)                                      \
  36         krb5_free_unparsed_name((ctx), (name));
  37
  38 #define KRB5_STRDUP(str)                                                        \
  39         strndup((str).data, (str).length)
  40
  41 #define KRB5_STRCMP(str, name)                                                  \
  42         (                                                                       \
  43          (str)->length != strlen(name) ||                                       \
  44          strncmp((str)->data, (name), (str)->length) != 0                       \
  45         )
  46
  47 #define KRB5_STRCASECMP(str, name)                                              \
  48         (                                                                       \
  49          (str)->length != strlen(name) ||                                       \
  50          strncasecmp((str)->data, (name), (str)->length) != 0                   \
  51         )
  52
  53 static inline
  54 char *lgss_krb5_strdup(krb5_data *kstr)
  55 {
  56         return strndup(kstr->data, kstr->length);
  57 }
  58
  59 static inline
  60 int lgss_krb5_strcmp(krb5_data *kstr, const char *str)
  61 {
  62         return (kstr->length != strlen(str) ||
  63                 memcmp(kstr->data, str, kstr->length) != 0);
  64 }
  65
  66 static inline
  67 int lgss_krb5_strcasecmp(krb5_data *kstr, const char *str)
  68 {
  69         return (kstr->length != strlen(str) ||
  70                 strncasecmp(kstr->data, str, kstr->length) != 0);
  71 }
  72
  73 #else /* !HAVE_KRB5 */
  74
  75 #define KEYTAB_ENTRY_MATCH(kte, name)                                           \
  76         (                                                                       \
  77          strlen((kte).principal->name.name_string.val[0]) ==                    \
  78          (sizeof(name)-1) &&                                                    \
  79          strncmp(kte.principal->name.name_string.val[0], (name),                \
  80                  sizeof(name)-1) == 0                                           \
  81         )
  82
  83 #define KRB5_FREE_UNPARSED_NAME(ctx, name)                                      \
  84         free(pname);
  85
  86 #define KRB5_STRDUP(str)                                                        \
  87         strdup(str)
  88
  89 #define KRB5_STRCMP(str, name)                                                  \
  90         strcmp((str), (name))
  91
  92 #define KRB5_STRCASECMP(str, name)                                              \
  93         strcmp((str), (name))
  94
  95 #endif /* HAVE_KRB5 */
  96
  97 #endif /* LGSS_KRB5_UTILS_H */