167 lines
4.2 KiB
C
167 lines
4.2 KiB
C
/*
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* Copyright (c) 2011 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "baselocl.h"
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#include <string.h>
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static void HEIM_CALLCONV
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data_dealloc(void *ptr)
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{
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heim_data_t d = ptr;
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heim_octet_string *os = (heim_octet_string *)d;
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heim_data_free_f_t *deallocp;
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heim_data_free_f_t dealloc;
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if (os->data == NULL)
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return;
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/* Possible string ref */
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deallocp = _heim_get_isaextra(os, 0);
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dealloc = *deallocp;
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if (dealloc != NULL)
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dealloc(os->data);
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}
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static int
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data_cmp(void *a, void *b)
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{
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heim_octet_string *osa = a, *osb = b;
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if (osa->length != osb->length)
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return osa->length - osb->length;
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return memcmp(osa->data, osb->data, osa->length);
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}
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static uintptr_t
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data_hash(void *ptr)
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{
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heim_octet_string *os = ptr;
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const unsigned char *s = os->data;
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if (os->length < 4)
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return os->length;
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return ((unsigned long)s[os->length - 1] << 24)
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| (s[os->length - 2] << 16) | (s[1] << 8) | s[0];
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}
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struct heim_type_data _heim_data_object = {
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HEIM_TID_DATA,
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"data-object",
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NULL,
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data_dealloc,
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NULL,
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data_cmp,
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data_hash,
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NULL
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};
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/**
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* Create a data object
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*
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* @param string the string to create, must be an utf8 string
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*
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* @return string object
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*/
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heim_data_t
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heim_data_create(const void *data, size_t length)
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{
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heim_octet_string *os;
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os = _heim_alloc_object(&_heim_data_object, sizeof(*os) + length);
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if (os) {
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os->data = (uint8_t *)os + sizeof(*os);
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os->length = length;
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memcpy(os->data, data, length);
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}
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return (heim_data_t)os;
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}
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heim_data_t
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heim_data_ref_create(const void *data, size_t length,
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heim_data_free_f_t dealloc)
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{
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heim_octet_string *os;
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heim_data_free_f_t *deallocp;
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os = _heim_alloc_object(&_heim_data_object, sizeof(*os) + length);
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if (os) {
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os->data = (void *)data;
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os->length = length;
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deallocp = _heim_get_isaextra(os, 0);
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*deallocp = dealloc;
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}
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return (heim_data_t)os;
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}
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/**
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* Return the type ID of data objects
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*
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* @return type id of data objects
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*/
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heim_tid_t
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heim_data_get_type_id(void)
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{
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return HEIM_TID_DATA;
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}
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/**
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* Get the data value of the content.
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*
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* @param data the data object to get the value from
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*
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* @return a heim_octet_string
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*/
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const heim_octet_string *
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heim_data_get_data(heim_data_t data)
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{
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/* Note that this works for data and data_ref objects */
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return (const heim_octet_string *)data;
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}
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const void *
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heim_data_get_ptr(heim_data_t data)
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{
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/* Note that this works for data and data_ref objects */
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return ((const heim_octet_string *)data)->data;
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}
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size_t heim_data_get_length(heim_data_t data)
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{
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/* Note that this works for data and data_ref objects */
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return ((const heim_octet_string *)data)->length;
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}
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