| /* ==================================================================== |
| * 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 "serf.h" |
| #include "serf_bucket_util.h" |
| #include "serf_private.h" |
| |
| |
| typedef struct event_context_t |
| { |
| apr_uint64_t bytes_read; |
| serf_bucket_t *stream; |
| void *baton; |
| serf_bucket_event_callback_t start_cb; |
| serf_bucket_event_callback_t eof_cb; |
| serf_bucket_event_callback_t destroy_cb; |
| bool at_eof; |
| } event_context_t; |
| |
| serf_bucket_t *serf__bucket_event_create( |
| serf_bucket_t *stream, |
| void *baton, |
| serf_bucket_event_callback_t start_cb, |
| serf_bucket_event_callback_t eof_cb, |
| serf_bucket_event_callback_t destroy_cb, |
| serf_bucket_alloc_t *allocator) |
| { |
| event_context_t *ctx = serf_bucket_mem_alloc(allocator, sizeof(*ctx)); |
| ctx->bytes_read = 0; |
| ctx->stream = stream; |
| ctx->baton = baton; |
| ctx->start_cb = start_cb; |
| ctx->eof_cb = eof_cb; |
| ctx->destroy_cb = destroy_cb; |
| ctx->at_eof = false; |
| |
| return serf_bucket_create(&serf_bucket_type__event, allocator, ctx); |
| } |
| |
| static apr_status_t serf_event_read(serf_bucket_t *bucket, |
| apr_size_t requested, |
| const char **data, |
| apr_size_t *len) |
| { |
| event_context_t *ctx = bucket->data; |
| apr_status_t status; |
| |
| if (ctx->start_cb) { |
| status = ctx->start_cb(ctx->baton, ctx->bytes_read); |
| ctx->start_cb = NULL; |
| |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| } |
| |
| if (ctx->stream && !ctx->at_eof) { |
| status = serf_bucket_read(ctx->stream, requested, data, len); |
| } |
| else { |
| status = APR_EOF; |
| *data = NULL; |
| *len = 0; |
| |
| if (ctx->at_eof && ctx->stream) { |
| serf_bucket_destroy(ctx->stream); |
| ctx->stream = NULL; |
| } |
| } |
| |
| if (!SERF_BUCKET_READ_ERROR(status)) { |
| ctx->bytes_read += *len; |
| |
| if (APR_STATUS_IS_EOF(status)) { |
| ctx->at_eof = true; |
| |
| if (ctx->eof_cb) { |
| status = ctx->eof_cb(ctx->baton, ctx->bytes_read); |
| ctx->eof_cb = NULL; |
| status = SERF_BUCKET_READ_ERROR(status) ? status : APR_EOF; |
| } |
| } |
| } |
| |
| return status; |
| } |
| |
| static apr_status_t serf_event_read_iovec(serf_bucket_t *bucket, |
| apr_size_t requested, |
| int vecs_size, |
| struct iovec *vecs, |
| int *vecs_used) |
| { |
| event_context_t *ctx = bucket->data; |
| apr_status_t status; |
| |
| if (ctx->start_cb) { |
| status = ctx->start_cb(ctx->baton, ctx->bytes_read); |
| ctx->start_cb = NULL; |
| |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| } |
| |
| if (ctx->stream && !ctx->at_eof) { |
| status = serf_bucket_read_iovec(ctx->stream, requested, vecs_size, |
| vecs, vecs_used); |
| } |
| else { |
| status = APR_EOF; |
| *vecs_used = 0; |
| |
| if (ctx->at_eof && ctx->stream) { |
| serf_bucket_destroy(ctx->stream); |
| ctx->stream = NULL; |
| } |
| } |
| |
| if (!SERF_BUCKET_READ_ERROR(status)) { |
| int i; |
| |
| for (i = 0; i < *vecs_used; i++) |
| ctx->bytes_read += vecs[i].iov_len; |
| |
| if (APR_STATUS_IS_EOF(status)) { |
| ctx->at_eof = true; |
| |
| if (ctx->eof_cb) { |
| status = ctx->eof_cb(ctx->baton, ctx->bytes_read); |
| ctx->eof_cb = NULL; |
| status = SERF_BUCKET_READ_ERROR(status) ? status : APR_EOF; |
| } |
| } |
| } |
| |
| return status; |
| } |
| |
| static apr_status_t serf_event_peek(serf_bucket_t *bucket, |
| const char **data, |
| apr_size_t *len) |
| { |
| event_context_t *ctx = bucket->data; |
| apr_status_t status; |
| |
| if (ctx->start_cb) { |
| status = ctx->start_cb(ctx->baton, ctx->bytes_read); |
| ctx->start_cb = NULL; |
| |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| } |
| |
| if (ctx->stream && !ctx->at_eof) { |
| status = serf_bucket_peek(ctx->stream, data, len); |
| } |
| else { |
| status = APR_EOF; |
| *len = 0; |
| |
| if (ctx->at_eof && ctx->stream) { |
| serf_bucket_destroy(ctx->stream); |
| ctx->stream = NULL; |
| } |
| } |
| |
| return status; |
| } |
| |
| static apr_uint64_t serf_event_get_remaining(serf_bucket_t *bucket) |
| { |
| event_context_t *ctx = bucket->data; |
| |
| if (ctx->stream && !ctx->at_eof) { |
| return serf_bucket_get_remaining(ctx->stream); |
| } |
| else { |
| if (ctx->at_eof && ctx->stream) { |
| serf_bucket_destroy(ctx->stream); |
| ctx->stream = NULL; |
| } |
| return 0; |
| } |
| } |
| |
| static apr_status_t serf_event_set_config(serf_bucket_t *bucket, |
| serf_config_t *config) |
| { |
| event_context_t *ctx = bucket->data; |
| |
| if (ctx->stream) |
| return serf_bucket_set_config(ctx->stream, config); |
| |
| return APR_SUCCESS; |
| } |
| |
| static void serf_event_destroy(serf_bucket_t *bucket) |
| { |
| event_context_t *ctx = bucket->data; |
| |
| if (ctx->stream) |
| serf_bucket_destroy(ctx->stream); |
| |
| if (ctx->destroy_cb) |
| (void)ctx->destroy_cb(ctx->baton, ctx->bytes_read); |
| |
| serf_default_destroy_and_data(bucket); |
| } |
| |
| const serf_bucket_type_t serf_bucket_type__event = { |
| "EVENT", |
| serf_event_read, |
| serf_default_readline, |
| serf_event_read_iovec, |
| serf_default_read_for_sendfile, |
| serf_buckets_are_v2, |
| serf_event_peek, |
| serf_event_destroy, |
| serf_default_read_bucket, |
| serf_event_get_remaining, |
| serf_event_set_config |
| }; |