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#include "aws/s3/private/s3_default_meta_request.h"
#include "aws/s3/private/s3_client_impl.h"
#include "aws/s3/private/s3_meta_request_impl.h"
#include "aws/s3/private/s3_request_messages.h"
#include "aws/s3/private/s3_util.h"
#include <aws/common/string.h>
#include <inttypes.h>
#ifdef _MSC_VER
/* sscanf warning (not currently scanning for strings) */
# pragma warning(disable : 4996)
#endif
static void s_s3_meta_request_default_destroy(struct aws_s3_meta_request *meta_request);
static bool s_s3_meta_request_default_update(
struct aws_s3_meta_request *meta_request,
uint32_t flags,
struct aws_s3_request **out_request);
static int s_s3_meta_request_default_prepare_request(
struct aws_s3_meta_request *meta_request,
struct aws_s3_request *request);
static void s_s3_meta_request_default_request_finished(
struct aws_s3_meta_request *meta_request,
struct aws_s3_request *request,
int error_code);
static struct aws_s3_meta_request_vtable s_s3_meta_request_default_vtable = {
.update = s_s3_meta_request_default_update,
.send_request_finish = aws_s3_meta_request_send_request_finish_handle_async_error,
.prepare_request = s_s3_meta_request_default_prepare_request,
.init_signing_date_time = aws_s3_meta_request_init_signing_date_time_default,
.sign_request = aws_s3_meta_request_sign_request_default,
.finished_request = s_s3_meta_request_default_request_finished,
.destroy = s_s3_meta_request_default_destroy,
.finish = aws_s3_meta_request_finish_default,
};
/* Allocate a new default meta request. */
struct aws_s3_meta_request *aws_s3_meta_request_default_new(
struct aws_allocator *allocator,
struct aws_s3_client *client,
uint64_t content_length,
bool should_compute_content_md5,
const struct aws_s3_meta_request_options *options) {
AWS_PRECONDITION(allocator);
AWS_PRECONDITION(client);
AWS_PRECONDITION(options);
AWS_PRECONDITION(options->message);
struct aws_byte_cursor request_method;
if (aws_http_message_get_request_method(options->message, &request_method)) {
AWS_LOGF_ERROR(
AWS_LS_S3_META_REQUEST,
"Could not create Default Meta Request; could not get request method from message.");
aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
return NULL;
}
if (content_length > SIZE_MAX) {
AWS_LOGF_ERROR(
AWS_LS_S3_META_REQUEST,
"Could not create Default Meta Request; content length of %" PRIu64 " bytes is too large for platform.",
content_length);
aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
return NULL;
}
struct aws_s3_meta_request_default *meta_request_default =
aws_mem_calloc(allocator, 1, sizeof(struct aws_s3_meta_request_default));
/* Try to initialize the base type. */
if (aws_s3_meta_request_init_base(
allocator,
client,
0,
should_compute_content_md5,
options,
meta_request_default,
&s_s3_meta_request_default_vtable,
&meta_request_default->base)) {
AWS_LOGF_ERROR(
AWS_LS_S3_META_REQUEST,
"id=%p Could not initialize base type for Default Meta Request.",
(void *)meta_request_default);
aws_mem_release(allocator, meta_request_default);
return NULL;
}
meta_request_default->content_length = (size_t)content_length;
AWS_LOGF_DEBUG(AWS_LS_S3_META_REQUEST, "id=%p Created new Default Meta Request.", (void *)meta_request_default);
return &meta_request_default->base;
}
static void s_s3_meta_request_default_destroy(struct aws_s3_meta_request *meta_request) {
AWS_PRECONDITION(meta_request);
AWS_PRECONDITION(meta_request->impl);
struct aws_s3_meta_request_default *meta_request_default = meta_request->impl;
aws_mem_release(meta_request->allocator, meta_request_default);
}
/* Try to get the next request that should be processed. */
static bool s_s3_meta_request_default_update(
struct aws_s3_meta_request *meta_request,
uint32_t flags,
struct aws_s3_request **out_request) {
(void)flags;
AWS_PRECONDITION(meta_request);
AWS_PRECONDITION(out_request);
struct aws_s3_meta_request_default *meta_request_default = meta_request->impl;
struct aws_s3_request *request = NULL;
bool work_remaining = false;
/* BEGIN CRITICAL SECTION */
{
aws_s3_meta_request_lock_synced_data(meta_request);
if (!aws_s3_meta_request_has_finish_result_synced(meta_request)) {
/* If the request hasn't been sent, then create and send it now. */
if (!meta_request_default->synced_data.request_sent) {
if (out_request == NULL) {
goto has_work_remaining;
}
request = aws_s3_request_new(meta_request, 0, 1, AWS_S3_REQUEST_FLAG_RECORD_RESPONSE_HEADERS);
AWS_LOGF_DEBUG(
AWS_LS_S3_META_REQUEST,
"id=%p: Meta Request Default created request %p",
(void *)meta_request,
(void *)request);
meta_request_default->synced_data.request_sent = true;
goto has_work_remaining;
}
/* If the request hasn't been completed, then wait for it to be completed. */
if (!meta_request_default->synced_data.request_completed) {
goto has_work_remaining;
}
/* If delivery hasn't been attempted yet for the response body, wait for that to happen. */
if (meta_request->synced_data.num_parts_delivery_completed < 1) {
goto has_work_remaining;
}
goto no_work_remaining;
} else {
/* If we are canceling, and the request hasn't been sent yet, then there is nothing to wait for. */
if (!meta_request_default->synced_data.request_sent) {
goto no_work_remaining;
}
/* If the request hasn't been completed yet, then wait for that to happen. */
if (!meta_request_default->synced_data.request_completed) {
goto has_work_remaining;
}
/* If some parts are still being delivered to the caller, then wait for those to finish. */
if (meta_request->synced_data.num_parts_delivery_completed <
meta_request->synced_data.num_parts_delivery_sent) {
goto has_work_remaining;
}
goto no_work_remaining;
}
has_work_remaining:
work_remaining = true;
no_work_remaining:
if (!work_remaining) {
aws_s3_meta_request_set_success_synced(
meta_request, meta_request_default->synced_data.cached_response_status);
}
aws_s3_meta_request_unlock_synced_data(meta_request);
}
/* END CRITICAL SECTION */
if (work_remaining) {
if (request != NULL) {
AWS_ASSERT(out_request != NULL);
*out_request = request;
}
} else {
AWS_ASSERT(request == NULL);
aws_s3_meta_request_finish(meta_request);
}
return work_remaining;
}
/* Given a request, prepare it for sending based on its description. */
static int s_s3_meta_request_default_prepare_request(
struct aws_s3_meta_request *meta_request,
struct aws_s3_request *request) {
AWS_PRECONDITION(meta_request);
struct aws_s3_meta_request_default *meta_request_default = meta_request->impl;
AWS_PRECONDITION(meta_request_default);
if (meta_request_default->content_length > 0 && request->num_times_prepared == 0) {
aws_byte_buf_init(&request->request_body, meta_request->allocator, meta_request_default->content_length);
if (aws_s3_meta_request_read_body(meta_request, &request->request_body)) {
return AWS_OP_ERR;
}
}
struct aws_http_message *message = aws_s3_message_util_copy_http_message_no_body_all_headers(
meta_request->allocator, meta_request->initial_request_message);
bool flexible_checksum = meta_request->checksum_config.location != AWS_SCL_NONE;
if (!flexible_checksum && meta_request->should_compute_content_md5) {
/* If flexible checksum used, client MUST skip Content-MD5 header computation */
aws_s3_message_util_add_content_md5_header(meta_request->allocator, &request->request_body, message);
}
if (meta_request->checksum_config.validate_response_checksum) {
struct aws_http_headers *headers = aws_http_message_get_headers(message);
aws_http_headers_set(headers, g_request_validation_mode, g_enabled);
}
aws_s3_message_util_assign_body(
meta_request->allocator,
&request->request_body,
message,
&meta_request->checksum_config,
NULL /* out_checksum */);
aws_s3_request_setup_send_data(request, message);
aws_http_message_release(message);
AWS_LOGF_DEBUG(
AWS_LS_S3_META_REQUEST, "id=%p: Meta Request prepared request %p", (void *)meta_request, (void *)request);
return AWS_OP_SUCCESS;
}
static void s_s3_meta_request_default_request_finished(
struct aws_s3_meta_request *meta_request,
struct aws_s3_request *request,
int error_code) {
AWS_PRECONDITION(meta_request);
AWS_PRECONDITION(meta_request->impl);
AWS_PRECONDITION(request);
struct aws_s3_meta_request_default *meta_request_default = meta_request->impl;
AWS_PRECONDITION(meta_request_default);
if (error_code == AWS_ERROR_SUCCESS && meta_request->headers_callback != NULL &&
request->send_data.response_headers != NULL) {
if (meta_request->headers_callback(
meta_request,
request->send_data.response_headers,
request->send_data.response_status,
meta_request->user_data)) {
error_code = aws_last_error_or_unknown();
}
meta_request->headers_callback = NULL;
}
/* BEGIN CRITICAL SECTION */
{
aws_s3_meta_request_lock_synced_data(meta_request);
meta_request_default->synced_data.cached_response_status = request->send_data.response_status;
meta_request_default->synced_data.request_completed = true;
meta_request_default->synced_data.request_error_code = error_code;
if (error_code == AWS_ERROR_SUCCESS) {
aws_s3_meta_request_stream_response_body_synced(meta_request, request);
} else {
aws_s3_meta_request_set_fail_synced(meta_request, request, error_code);
}
aws_s3_meta_request_unlock_synced_data(meta_request);
}
/* END CRITICAL SECTION */
}
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