1 /* Copyright information is at end of file */
2 #include "xmlrpc_config.h"
9 #include "xmlrpc-c/util_int.h"
10 #include "xmlrpc-c/util.h"
13 /* when looking for corruption don't allocate extra slop */
14 #define BLOCK_ALLOC_MIN (1)
16 #define BLOCK_ALLOC_MIN (16)
18 #define BLOCK_ALLOC_MAX (128 * 1024 * 1024)
22 xmlrpc_mem_block_new(xmlrpc_env * const env,
25 xmlrpc_mem_block* block;
27 XMLRPC_ASSERT_ENV_OK(env);
29 block = (xmlrpc_mem_block*) malloc(sizeof(xmlrpc_mem_block));
30 XMLRPC_FAIL_IF_NULL(block, env, XMLRPC_INTERNAL_ERROR,
31 "Can't allocate memory block");
33 xmlrpc_mem_block_init(env, block, size);
34 XMLRPC_FAIL_IF_FAULT(env);
37 if (env->fault_occurred) {
46 /* Destroy an existing xmlrpc_mem_block, and everything it contains. */
48 xmlrpc_mem_block_free(xmlrpc_mem_block * const blockP) {
50 XMLRPC_ASSERT(blockP != NULL);
51 XMLRPC_ASSERT(blockP->_block != NULL);
53 xmlrpc_mem_block_clean(blockP);
59 /* Initialize the contents of the provided xmlrpc_mem_block. */
61 xmlrpc_mem_block_init(xmlrpc_env * const envP,
62 xmlrpc_mem_block * const blockP,
65 XMLRPC_ASSERT_ENV_OK(envP);
66 XMLRPC_ASSERT(blockP != NULL);
69 if (size < BLOCK_ALLOC_MIN)
70 blockP->_allocated = BLOCK_ALLOC_MIN;
72 blockP->_allocated = size;
74 blockP->_block = (void*) malloc(blockP->_allocated);
76 xmlrpc_faultf(envP, "Can't allocate %u-byte memory block",
82 /* Deallocate the contents of the provided xmlrpc_mem_block, but not
86 xmlrpc_mem_block_clean(xmlrpc_mem_block * const blockP) {
88 XMLRPC_ASSERT(blockP != NULL);
89 XMLRPC_ASSERT(blockP->_block != NULL);
92 blockP->_block = XMLRPC_BAD_POINTER;
97 /* Get the size of the xmlrpc_mem_block. */
99 xmlrpc_mem_block_size(const xmlrpc_mem_block * const blockP) {
101 XMLRPC_ASSERT(blockP != NULL);
102 return blockP->_size;
107 /* Get the contents of the xmlrpc_mem_block. */
109 xmlrpc_mem_block_contents(const xmlrpc_mem_block * const blockP) {
111 XMLRPC_ASSERT(blockP != NULL);
112 return blockP->_block;
117 /* Resize an xmlrpc_mem_block, preserving as much of the contents as
121 xmlrpc_mem_block_resize (xmlrpc_env * const envP,
122 xmlrpc_mem_block * const blockP,
125 size_t proposed_alloc;
128 XMLRPC_ASSERT_ENV_OK(envP);
129 XMLRPC_ASSERT(blockP != NULL);
131 /* Check to see if we already have enough space. Maybe we'll get lucky. */
132 if (size <= blockP->_allocated) {
133 blockP->_size = size;
137 /* Calculate a new allocation size. */
139 proposed_alloc = size;
141 proposed_alloc = blockP->_allocated;
142 while (proposed_alloc < size && proposed_alloc <= BLOCK_ALLOC_MAX)
144 #endif /* DEBUG_MEM_ERRORS */
146 if (proposed_alloc > BLOCK_ALLOC_MAX)
147 XMLRPC_FAIL(envP, XMLRPC_INTERNAL_ERROR, "Memory block too large");
149 /* Allocate our new memory block. */
150 new_block = (void*) malloc(proposed_alloc);
151 XMLRPC_FAIL_IF_NULL(new_block, envP, XMLRPC_INTERNAL_ERROR,
152 "Can't resize memory block");
154 /* Copy over our data and update the xmlrpc_mem_block struct. */
155 memcpy(new_block, blockP->_block, blockP->_size);
156 free(blockP->_block);
157 blockP->_block = new_block;
158 blockP->_size = size;
159 blockP->_allocated = proposed_alloc;
168 xmlrpc_mem_block_append(xmlrpc_env * const envP,
169 xmlrpc_mem_block * const blockP,
170 const void * const data,
175 XMLRPC_ASSERT_ENV_OK(envP);
176 XMLRPC_ASSERT(blockP != NULL);
178 size = blockP->_size;
179 xmlrpc_mem_block_resize(envP, blockP, size + len);
180 XMLRPC_FAIL_IF_FAULT(envP);
182 memcpy(((unsigned char*) blockP->_block) + size, data, len);
190 /* Copyright (C) 2001 by First Peer, Inc. All rights reserved.
192 ** Redistribution and use in source and binary forms, with or without
193 ** modification, are permitted provided that the following conditions
195 ** 1. Redistributions of source code must retain the above copyright
196 ** notice, this list of conditions and the following disclaimer.
197 ** 2. Redistributions in binary form must reproduce the above copyright
198 ** notice, this list of conditions and the following disclaimer in the
199 ** documentation and/or other materials provided with the distribution.
200 ** 3. The name of the author may not be used to endorse or promote products
201 ** derived from this software without specific prior written permission.
203 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
204 ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
205 ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
206 ** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
207 ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
208 ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
209 ** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
210 ** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
211 ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
212 ** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF