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Diffstat (limited to 'buckets/apr_buckets_socket.c')
| -rw-r--r-- | buckets/apr_buckets_socket.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/buckets/apr_buckets_socket.c b/buckets/apr_buckets_socket.c new file mode 100644 index 0000000..68eae43 --- /dev/null +++ b/buckets/apr_buckets_socket.c @@ -0,0 +1,114 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr_buckets.h" + +static apr_status_t socket_bucket_read(apr_bucket *a, const char **str, + apr_size_t *len, apr_read_type_e block) +{ + apr_socket_t *p = a->data; + char *buf; + apr_status_t rv; + apr_interval_time_t timeout; + + if (block == APR_NONBLOCK_READ) { + apr_socket_timeout_get(p, &timeout); + apr_socket_timeout_set(p, 0); + } + + *str = NULL; + *len = APR_BUCKET_BUFF_SIZE; + buf = apr_bucket_alloc(*len, a->list); /* XXX: check for failure? */ + + rv = apr_socket_recv(p, buf, len); + + if (block == APR_NONBLOCK_READ) { + apr_socket_timeout_set(p, timeout); + } + + if (rv != APR_SUCCESS && rv != APR_EOF) { + apr_bucket_free(buf); + return rv; + } + /* + * If there's more to read we have to keep the rest of the socket + * for later. XXX: Note that more complicated bucket types that + * refer to data not in memory and must therefore have a read() + * function similar to this one should be wary of copying this + * code because if they have a destroy function they probably + * want to migrate the bucket's subordinate structure from the + * old bucket to a raw new one and adjust it as appropriate, + * rather than destroying the old one and creating a completely + * new bucket. + * + * Even if there is nothing more to read, don't close the socket here + * as we have to use it to send any response :) We could shut it + * down for reading, but there is no benefit to doing so. + */ + if (*len > 0) { + apr_bucket_heap *h; + /* Change the current bucket to refer to what we read */ + a = apr_bucket_heap_make(a, buf, *len, apr_bucket_free); + h = a->data; + h->alloc_len = APR_BUCKET_BUFF_SIZE; /* note the real buffer size */ + *str = buf; + APR_BUCKET_INSERT_AFTER(a, apr_bucket_socket_create(p, a->list)); + } + else { + apr_bucket_free(buf); + a = apr_bucket_immortal_make(a, "", 0); + *str = a->data; + } + return APR_SUCCESS; +} + +APU_DECLARE(apr_bucket *) apr_bucket_socket_make(apr_bucket *b, apr_socket_t *p) +{ + /* + * XXX: We rely on a cleanup on some pool or other to actually + * destroy the socket. We should probably explicitly call apr to + * destroy it instead. + * + * Note that typically the socket is allocated from the connection pool + * so it will disappear when the connection is finished. + */ + b->type = &apr_bucket_type_socket; + b->length = (apr_size_t)(-1); + b->start = -1; + b->data = p; + + return b; +} + +APU_DECLARE(apr_bucket *) apr_bucket_socket_create(apr_socket_t *p, + apr_bucket_alloc_t *list) +{ + apr_bucket *b = apr_bucket_alloc(sizeof(*b), list); + + APR_BUCKET_INIT(b); + b->free = apr_bucket_free; + b->list = list; + return apr_bucket_socket_make(b, p); +} + +APU_DECLARE_DATA const apr_bucket_type_t apr_bucket_type_socket = { + "SOCKET", 5, APR_BUCKET_DATA, + apr_bucket_destroy_noop, + socket_bucket_read, + apr_bucket_setaside_notimpl, + apr_bucket_split_notimpl, + apr_bucket_copy_notimpl +}; |