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 19static apr_status_t socket_bucket_read(apr_bucket *a, const char **str, 20 apr_size_t *len, apr_read_type_e block) 21{ 22 apr_socket_t *p = a->data; 23 char *buf; 24 apr_status_t rv; 25 apr_interval_time_t timeout; 26 27 if (block == APR_NONBLOCK_READ) { 28 apr_socket_timeout_get(p, &timeout); 29 apr_socket_timeout_set(p, 0); 30 } 31 32 *str = NULL; 33 *len = APR_BUCKET_BUFF_SIZE; 34 buf = apr_bucket_alloc(*len, a->list); /* XXX: check for failure? */ 35 36 rv = apr_socket_recv(p, buf, len); 37 38 if (block == APR_NONBLOCK_READ) { 39 apr_socket_timeout_set(p, timeout); 40 } 41 42 if (rv != APR_SUCCESS && rv != APR_EOF) { 43 apr_bucket_free(buf); 44 return rv; 45 } 46 /* 47 * If there's more to read we have to keep the rest of the socket 48 * for later. XXX: Note that more complicated bucket types that 49 * refer to data not in memory and must therefore have a read() 50 * function similar to this one should be wary of copying this 51 * code because if they have a destroy function they probably 52 * want to migrate the bucket's subordinate structure from the 53 * old bucket to a raw new one and adjust it as appropriate, 54 * rather than destroying the old one and creating a completely 55 * new bucket. 56 * 57 * Even if there is nothing more to read, don't close the socket here 58 * as we have to use it to send any response :) We could shut it 59 * down for reading, but there is no benefit to doing so. 60 */ 61 if (*len > 0) { 62 apr_bucket_heap *h; 63 /* Change the current bucket to refer to what we read */ 64 a = apr_bucket_heap_make(a, buf, *len, apr_bucket_free); 65 h = a->data; 66 h->alloc_len = APR_BUCKET_BUFF_SIZE; /* note the real buffer size */ 67 *str = buf; 68 APR_BUCKET_INSERT_AFTER(a, apr_bucket_socket_create(p, a->list)); 69 } 70 else { 71 apr_bucket_free(buf); 72 a = apr_bucket_immortal_make(a, "", 0); 73 *str = a->data; 74 } 75 return APR_SUCCESS; 76} 77 78APU_DECLARE(apr_bucket *) apr_bucket_socket_make(apr_bucket *b, apr_socket_t *p) 79{ 80 /* 81 * XXX: We rely on a cleanup on some pool or other to actually 82 * destroy the socket. We should probably explicitly call apr to 83 * destroy it instead. 84 * 85 * Note that typically the socket is allocated from the connection pool 86 * so it will disappear when the connection is finished. 87 */ 88 b->type = &apr_bucket_type_socket; 89 b->length = (apr_size_t)(-1); 90 b->start = -1; 91 b->data = p; 92 93 return b; 94} 95 96APU_DECLARE(apr_bucket *) apr_bucket_socket_create(apr_socket_t *p, 97 apr_bucket_alloc_t *list) 98{ 99 apr_bucket *b = apr_bucket_alloc(sizeof(*b), list); 100 101 APR_BUCKET_INIT(b); 102 b->free = apr_bucket_free; 103 b->list = list; 104 return apr_bucket_socket_make(b, p); 105} 106 107APU_DECLARE_DATA const apr_bucket_type_t apr_bucket_type_socket = { 108 "SOCKET", 5, APR_BUCKET_DATA, 109 apr_bucket_destroy_noop, 110 socket_bucket_read, 111 apr_bucket_setaside_notimpl, 112 apr_bucket_split_notimpl, 113 apr_bucket_copy_notimpl 114}; 115