1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "apr_buckets.h"
18 #define APR_WANT_MEMFUNC
19 #include "apr_want.h"
20
heap_bucket_read(apr_bucket * b,const char ** str,apr_size_t * len,apr_read_type_e block)21 static apr_status_t heap_bucket_read(apr_bucket *b, const char **str,
22 apr_size_t *len, apr_read_type_e block)
23 {
24 apr_bucket_heap *h = b->data;
25
26 *str = h->base + b->start;
27 *len = b->length;
28 return APR_SUCCESS;
29 }
30
heap_bucket_destroy(void * data)31 static void heap_bucket_destroy(void *data)
32 {
33 apr_bucket_heap *h = data;
34
35 if (apr_bucket_shared_destroy(h)) {
36 (*h->free_func)(h->base);
37 apr_bucket_free(h);
38 }
39 }
40
41 /* Warning: if you change this function, be sure to
42 * change apr_bucket_pool_make() too! */
apr_bucket_heap_make(apr_bucket * b,const char * buf,apr_size_t length,void (* free_func)(void * data))43 APU_DECLARE(apr_bucket *) apr_bucket_heap_make(apr_bucket *b, const char *buf,
44 apr_size_t length,
45 void (*free_func)(void *data))
46 {
47 apr_bucket_heap *h;
48
49 h = apr_bucket_alloc(sizeof(*h), b->list);
50
51 if (!free_func) {
52 h->alloc_len = length;
53 h->base = apr_bucket_alloc(h->alloc_len, b->list);
54 if (h->base == NULL) {
55 apr_bucket_free(h);
56 return NULL;
57 }
58 h->free_func = apr_bucket_free;
59 memcpy(h->base, buf, length);
60 }
61 else {
62 /* XXX: we lose the const qualifier here which indicates
63 * there's something screwy with the API...
64 */
65 h->base = (char *) buf;
66 h->alloc_len = length;
67 h->free_func = free_func;
68 }
69
70 b = apr_bucket_shared_make(b, h, 0, length);
71 b->type = &apr_bucket_type_heap;
72
73 return b;
74 }
75
apr_bucket_heap_create(const char * buf,apr_size_t length,void (* free_func)(void * data),apr_bucket_alloc_t * list)76 APU_DECLARE(apr_bucket *) apr_bucket_heap_create(const char *buf,
77 apr_size_t length,
78 void (*free_func)(void *data),
79 apr_bucket_alloc_t *list)
80 {
81 apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
82
83 APR_BUCKET_INIT(b);
84 b->free = apr_bucket_free;
85 b->list = list;
86 return apr_bucket_heap_make(b, buf, length, free_func);
87 }
88
89 APU_DECLARE_DATA const apr_bucket_type_t apr_bucket_type_heap = {
90 "HEAP", 5, APR_BUCKET_DATA,
91 heap_bucket_destroy,
92 heap_bucket_read,
93 apr_bucket_setaside_noop,
94 apr_bucket_shared_split,
95 apr_bucket_shared_copy
96 };
97