git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/memcached_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 #include <sys/socket.h>
  15 #include <netinet/tcp.h>
  16
  17 /*
  18   These functions provide data and function callback support
  19 */
  20
  21 memcached_return_t memcached_callback_set(memcached_st *ptr,
  22                                           memcached_callback_t flag,
  23                                           void *data)
  24 {
  25   switch (flag)
  26   {
  27   case MEMCACHED_CALLBACK_PREFIX_KEY:
  28     {
  29       char *key= (char *)data;
  30
  31       if (key)
  32       {
  33         size_t key_length= strlen(key);
  34
  35         if (memcached_key_test((const char **)&key, &key_length, 1) == MEMCACHED_BAD_KEY_PROVIDED)
  36         {
  37           return MEMCACHED_BAD_KEY_PROVIDED;
  38         }
  39
  40         if ((key_length > MEMCACHED_PREFIX_KEY_MAX_SIZE -1)
  41             || (strcpy(ptr->prefix_key, key) == NULL))
  42         {
  43           ptr->prefix_key_length= 0;
  44           return MEMCACHED_BAD_KEY_PROVIDED;
  45         }
  46         else
  47         {
  48           ptr->prefix_key_length= key_length;
  49         }
  50       }
  51       else
  52       {
  53         memset(ptr->prefix_key, 0, MEMCACHED_PREFIX_KEY_MAX_SIZE);
  54         ptr->prefix_key_length= 0;
  55       }
  56
  57       break;
  58     }
  59   case MEMCACHED_CALLBACK_USER_DATA:
  60     {
  61       ptr->user_data= data;
  62       break;
  63     }
  64   case MEMCACHED_CALLBACK_CLEANUP_FUNCTION:
  65     {
  66       memcached_cleanup_fn func= *(memcached_cleanup_fn *)&data;
  67       ptr->on_cleanup= func;
  68       break;
  69     }
  70   case MEMCACHED_CALLBACK_CLONE_FUNCTION:
  71     {
  72       memcached_clone_fn func= *(memcached_clone_fn *)&data;
  73       ptr->on_clone= func;
  74       break;
  75     }
  76 #ifdef MEMCACHED_ENABLE_DEPRECATED
  77   case MEMCACHED_CALLBACK_MALLOC_FUNCTION:
  78     {
  79       memcached_malloc_function func= *(memcached_malloc_fn *)&data;
  80       ptr->call_malloc= func;
  81       break;
  82     }
  83   case MEMCACHED_CALLBACK_REALLOC_FUNCTION:
  84     {
  85       memcached_realloc_function func= *(memcached_realloc_fn *)&data;
  86       ptr->call_realloc= func;
  87       break;
  88     }
  89   case MEMCACHED_CALLBACK_FREE_FUNCTION:
  90     {
  91       memcached_free_function func= *(memcached_free_fn *)&data;
  92       ptr->call_free= func;
  93       break;
  94     }
  95 #endif
  96   case MEMCACHED_CALLBACK_GET_FAILURE:
  97     {
  98       memcached_trigger_key_fn func= *(memcached_trigger_key_fn *)&data;
  99       ptr->get_key_failure= func;
 100       break;
 101     }
 102   case MEMCACHED_CALLBACK_DELETE_TRIGGER:
 103     {
 104       memcached_trigger_delete_key_fn func= *(memcached_trigger_delete_key_fn *)&data;
 105       ptr->delete_trigger= func;
 106       break;
 107     }
 108   default:
 109     return MEMCACHED_FAILURE;
 110   }
 111
 112   return MEMCACHED_SUCCESS;
 113 }
 114
 115 void *memcached_callback_get(memcached_st *ptr,
 116                              memcached_callback_t flag,
 117                              memcached_return_t *error)
 118 {
 119   memcached_return_t local_error;
 120
 121   if (!error)
 122     error = &local_error;
 123
 124   switch (flag)
 125   {
 126   case MEMCACHED_CALLBACK_PREFIX_KEY:
 127     {
 128       if (ptr->prefix_key[0] == 0)
 129       {
 130         *error= MEMCACHED_FAILURE;
 131         return NULL;
 132       }
 133       else
 134       {
 135         *error= MEMCACHED_SUCCESS;
 136         return (void *)ptr->prefix_key;
 137       }
 138     }
 139   case MEMCACHED_CALLBACK_USER_DATA:
 140     {
 141       *error= ptr->user_data ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 142       return (void *)ptr->user_data;
 143     }
 144   case MEMCACHED_CALLBACK_CLEANUP_FUNCTION:
 145     {
 146       *error= ptr->on_cleanup ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 147       return *(void **)&ptr->on_cleanup;
 148     }
 149   case MEMCACHED_CALLBACK_CLONE_FUNCTION:
 150     {
 151       *error= ptr->on_clone ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 152       return *(void **)&ptr->on_clone;
 153     }
 154 #ifdef MEMCACHED_ENABLE_DEPRECATED
 155   case MEMCACHED_CALLBACK_MALLOC_FUNCTION:
 156     {
 157       *error= ptr->call_malloc ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 158       return *(void **)&ptr->call_malloc;
 159     }
 160   case MEMCACHED_CALLBACK_REALLOC_FUNCTION:
 161     {
 162       *error= ptr->call_realloc ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 163       return *(void **)&ptr->call_realloc;
 164     }
 165   case MEMCACHED_CALLBACK_FREE_FUNCTION:
 166     {
 167       *error= ptr->call_free ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 168       return *(void **)&ptr->call_free;
 169     }
 170 #endif
 171   case MEMCACHED_CALLBACK_GET_FAILURE:
 172     {
 173       *error= ptr->get_key_failure ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 174       return *(void **)&ptr->get_key_failure;
 175     }
 176   case MEMCACHED_CALLBACK_DELETE_TRIGGER:
 177     {
 178       *error= ptr->delete_trigger ? MEMCACHED_SUCCESS : MEMCACHED_FAILURE;
 179       return *(void **)&ptr->delete_trigger;
 180     }
 181   default:
 182     WATCHPOINT_ASSERT(0);
 183     *error= MEMCACHED_FAILURE;
 184     return NULL;
 185   }
 186 }