git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/callback.c

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary: Change any of the possible callbacks.
   9  *
  10  */
  11
  12 #include "common.h"
  13 #include <sys/types.h>
  14
  15 /*
  16   These functions provide data and function callback support
  17 */
  18
  19 memcached_return_t memcached_callback_set(memcached_st *ptr,
  20                                           const memcached_callback_t flag,
  21                                           void *data)
  22 {
  23   switch (flag)
  24   {
  25   case MEMCACHED_CALLBACK_PREFIX_KEY:
  26     {
  27       char *key= (char *)data;
  28
  29       if (key)
  30       {
  31         size_t key_length= strlen(key);
  32
  33         if (memcached_key_test((const char **)&key, &key_length, 1) == MEMCACHED_BAD_KEY_PROVIDED)
  34         {
  35           return MEMCACHED_BAD_KEY_PROVIDED;
  36         }
  37
  38         if ((key_length > MEMCACHED_PREFIX_KEY_MAX_SIZE -1)
  39             || (strncpy(ptr->prefix_key, key, MEMCACHED_PREFIX_KEY_MAX_SIZE) == NULL))
  40         {
  41           ptr->prefix_key_length= 0;
  42           return MEMCACHED_BAD_KEY_PROVIDED;
  43         }
  44         else
  45         {
  46           ptr->prefix_key_length= key_length;
  47         }
  48       }
  49       else
  50       {
  51         ptr->prefix_key[0]= 0;
  52         ptr->prefix_key_length= 0;
  53       }
  54
  55       break;
  56     }
  57   case MEMCACHED_CALLBACK_USER_DATA:
  58     {
  59       ptr->user_data= data;
  60       break;
  61     }
  62   case MEMCACHED_CALLBACK_CLEANUP_FUNCTION:
  63     {
  64       memcached_cleanup_fn func= *(memcached_cleanup_fn *)&data;
  65       ptr->on_cleanup= func;
  66       break;
  67     }
  68   case MEMCACHED_CALLBACK_CLONE_FUNCTION:
  69     {
  70       memcached_clone_fn func= *(memcached_clone_fn *)&data;
  71       ptr->on_clone= func;
  72       break;
  73     }
  74 #ifdef MEMCACHED_ENABLE_DEPRECATED
  75   case MEMCACHED_CALLBACK_MALLOC_FUNCTION:
  76     {
  77       memcached_malloc_function func= *(memcached_malloc_fn *)&data;
  78       ptr->call_malloc= func;
  79       break;
  80     }
  81   case MEMCACHED_CALLBACK_REALLOC_FUNCTION:
  82     {
  83       memcached_realloc_function func= *(memcached_realloc_fn *)&data;
  84       ptr->call_realloc= func;
  85       break;
  86     }
  87   case MEMCACHED_CALLBACK_FREE_FUNCTION:
  88     {
  89       memcached_free_function func= *(memcached_free_fn *)&data;
  90       ptr->call_free= func;
  91       break;
  92     }
  93 #endif
  94   case MEMCACHED_CALLBACK_GET_FAILURE:
  95     {
  96       memcached_trigger_key_fn func= *(memcached_trigger_key_fn *)&data;
  97       ptr->get_key_failure= func;
  98       break;
  99     }
 100   case MEMCACHED_CALLBACK_DELETE_TRIGGER:
 101     {
 102       memcached_trigger_delete_key_fn func= *(memcached_trigger_delete_key_fn *)&data;
 103       ptr->delete_trigger= func;
 104       break;
 105     }
 106   case MEMCACHED_CALLBACK_MAX:
 107   default:
 108     return MEMCACHED_FAILURE;
 109   }
 110
 111   return MEMCACHED_SUCCESS;
 112 }
 113
 114 void *memcached_callback_get(memcached_st *ptr,
 115                              const memcached_callback_t flag,
 116                              memcached_return_t *error)
 117 {
 118   memcached_return_t local_error;
 119
 120   if (!error)
 121     error = &local_error;
 122
 123   switch (flag)
 124   {
 125   case MEMCACHED_CALLBACK_PREFIX_KEY:
 126     {
 127       if (ptr->prefix_key_length)
 128       {
 129         *error= MEMCACHED_SUCCESS;
 130         return (void *)ptr->prefix_key;
 131       }
 132       else
 133       {
 134         *error= MEMCACHED_FAILURE;
 135         return NULL;
 136       }
 137     }
 138   case MEMCACHED_CALLBACK_USER_DATA:
 139     {
 140       *error= ptr->user_data ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 141       return (void *)ptr->user_data;
 142     }
 143   case MEMCACHED_CALLBACK_CLEANUP_FUNCTION:
 144     {
 145       *error= ptr->on_cleanup ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 146       return *(void **)&ptr->on_cleanup;
 147     }
 148   case MEMCACHED_CALLBACK_CLONE_FUNCTION:
 149     {
 150       *error= ptr->on_clone ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 151       return *(void **)&ptr->on_clone;
 152     }
 153 #ifdef MEMCACHED_ENABLE_DEPRECATED
 154   case MEMCACHED_CALLBACK_MALLOC_FUNCTION:
 155     {
 156       *error= ptr->call_malloc ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 157       return *(void **)&ptr->call_malloc;
 158     }
 159   case MEMCACHED_CALLBACK_REALLOC_FUNCTION:
 160     {
 161       *error= ptr->call_realloc ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 162       return *(void **)&ptr->call_realloc;
 163     }
 164   case MEMCACHED_CALLBACK_FREE_FUNCTION:
 165     {
 166       *error= ptr->call_free ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 167       return *(void **)&ptr->call_free;
 168     }
 169 #endif
 170   case MEMCACHED_CALLBACK_GET_FAILURE:
 171     {
 172       *error= ptr->get_key_failure ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 173       return *(void **)&ptr->get_key_failure;
 174     }
 175   case MEMCACHED_CALLBACK_DELETE_TRIGGER:
 176     {
 177       *error= ptr->delete_trigger ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 178       return *(void **)&ptr->delete_trigger;
 179     }
 180   case MEMCACHED_CALLBACK_MAX:
 181   default:
 182     WATCHPOINT_ASSERT(0);
 183     *error= MEMCACHED_FAILURE;
 184     return NULL;
 185   }
 186 }