| /* ==================================================================== |
| * 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_pools.h> |
| |
| #include "serf.h" |
| #include "serf_bucket_util.h" |
| |
| typedef struct file_context_t { |
| apr_file_t *file; |
| |
| serf_databuf_t databuf; |
| apr_uint64_t remaining; |
| } file_context_t; |
| |
| |
| static apr_status_t file_reader(void *baton, apr_size_t bufsize, |
| char *buf, apr_size_t *len) |
| { |
| file_context_t *ctx = baton; |
| |
| *len = bufsize; |
| return apr_file_read(ctx->file, buf, len); |
| } |
| |
| serf_bucket_t *serf_bucket_file_create( |
| apr_file_t *file, |
| serf_bucket_alloc_t *allocator) |
| { |
| apr_status_t status; |
| file_context_t *ctx; |
| apr_finfo_t finfo; |
| |
| status = apr_file_info_get(&finfo, APR_FINFO_SIZE, file); |
| |
| #if APR_HAS_MMAP |
| /* See if we'd be better off mmap'ing this file instead. |
| * |
| * Note that there is a failure case here that we purposely fall through: |
| * if a file is buffered, apr_mmap will reject it. However, on older |
| * versions of APR, we have no way of knowing this - but apr_mmap_create |
| * will check for this and return APR_EBADF. |
| */ |
| if (status == APR_SUCCESS && APR_MMAP_CANDIDATE(finfo.size)) { |
| apr_mmap_t *file_mmap; |
| status = apr_mmap_create(&file_mmap, file, 0, finfo.size, |
| APR_MMAP_READ, |
| serf_bucket_allocator_get_pool(allocator)); |
| |
| if (status == APR_SUCCESS) { |
| return serf_bucket_mmap_create(file_mmap, allocator); |
| } |
| } |
| #endif |
| |
| /* Oh, well. */ |
| ctx = serf_bucket_mem_alloc(allocator, sizeof(*ctx)); |
| ctx->file = file; |
| |
| serf_databuf_init(&ctx->databuf); |
| ctx->databuf.read = file_reader; |
| ctx->databuf.read_baton = ctx; |
| |
| if (status == APR_SUCCESS) { |
| ctx->remaining = finfo.size; |
| } |
| else { |
| ctx->remaining = SERF_LENGTH_UNKNOWN; |
| } |
| |
| return serf_bucket_create(&serf_bucket_type_file, allocator, ctx); |
| } |
| |
| static apr_status_t serf_file_read(serf_bucket_t *bucket, |
| apr_size_t requested, |
| const char **data, apr_size_t *len) |
| { |
| file_context_t *ctx = bucket->data; |
| apr_status_t status; |
| |
| status = serf_databuf_read(&ctx->databuf, requested, data, len); |
| |
| if (SERF_BUCKET_READ_ERROR(status)) |
| { |
| return status; |
| } |
| |
| /* Update remaining length if known. */ |
| if (ctx->remaining != SERF_LENGTH_UNKNOWN) { |
| ctx->remaining -= *len; |
| } |
| |
| return status; |
| } |
| |
| static apr_status_t serf_file_readline(serf_bucket_t *bucket, |
| int acceptable, int *found, |
| const char **data, apr_size_t *len) |
| { |
| file_context_t *ctx = bucket->data; |
| apr_status_t status; |
| |
| status = serf_databuf_readline(&ctx->databuf, acceptable, found, data, len); |
| |
| if (SERF_BUCKET_READ_ERROR(status)) |
| { |
| return status; |
| } |
| |
| /* Update remaining length if known. */ |
| if (ctx->remaining != SERF_LENGTH_UNKNOWN) { |
| ctx->remaining -= *len; |
| } |
| |
| return status; |
| |
| } |
| |
| static apr_status_t serf_file_peek(serf_bucket_t *bucket, |
| const char **data, |
| apr_size_t *len) |
| { |
| file_context_t *ctx = bucket->data; |
| |
| return serf_databuf_peek(&ctx->databuf, data, len); |
| } |
| |
| static apr_uint64_t serf_file_get_remaining(serf_bucket_t *bucket) |
| { |
| file_context_t *ctx = bucket->data; |
| return ctx->remaining; |
| } |
| |
| const serf_bucket_type_t serf_bucket_type_file = { |
| "FILE", |
| serf_file_read, |
| serf_file_readline, |
| serf_default_read_iovec, |
| serf_default_read_for_sendfile, |
| serf_buckets_are_v2, |
| serf_file_peek, |
| serf_default_destroy_and_data, |
| serf_default_read_bucket, |
| serf_file_get_remaining, |
| serf_default_ignore_config, |
| }; |