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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/auth/signable.h>
#include <aws/common/string.h>
#include <aws/io/stream.h>
/*
* This is a simple aws_signable wrapper implementation for an s3 chunk
*/
struct aws_signable_chunk_impl {
struct aws_input_stream *chunk_data;
struct aws_string *previous_signature;
};
static int s_aws_signable_chunk_get_property(
const struct aws_signable *signable,
const struct aws_string *name,
struct aws_byte_cursor *out_value) {
struct aws_signable_chunk_impl *impl = signable->impl;
AWS_ZERO_STRUCT(*out_value);
/*
* uri and method can be queried directly from the wrapper request
*/
if (aws_string_eq(name, g_aws_previous_signature_property_name)) {
*out_value = aws_byte_cursor_from_string(impl->previous_signature);
} else {
return AWS_OP_ERR;
}
return AWS_OP_SUCCESS;
}
static int s_aws_signable_chunk_get_property_list(
const struct aws_signable *signable,
const struct aws_string *name,
struct aws_array_list **out_list) {
(void)signable;
(void)name;
(void)out_list;
return AWS_OP_ERR;
}
static int s_aws_signable_chunk_get_payload_stream(
const struct aws_signable *signable,
struct aws_input_stream **out_input_stream) {
struct aws_signable_chunk_impl *impl = signable->impl;
*out_input_stream = impl->chunk_data;
return AWS_OP_SUCCESS;
}
static void s_aws_signable_chunk_destroy(struct aws_signable *signable) {
if (signable == NULL) {
return;
}
struct aws_signable_chunk_impl *impl = signable->impl;
if (impl == NULL) {
return;
}
aws_input_stream_release(impl->chunk_data);
aws_string_destroy(impl->previous_signature);
aws_mem_release(signable->allocator, signable);
}
static struct aws_signable_vtable s_signable_chunk_vtable = {
.get_property = s_aws_signable_chunk_get_property,
.get_property_list = s_aws_signable_chunk_get_property_list,
.get_payload_stream = s_aws_signable_chunk_get_payload_stream,
.destroy = s_aws_signable_chunk_destroy,
};
struct aws_signable *aws_signable_new_chunk(
struct aws_allocator *allocator,
struct aws_input_stream *chunk_data,
struct aws_byte_cursor previous_signature) {
struct aws_signable *signable = NULL;
struct aws_signable_chunk_impl *impl = NULL;
aws_mem_acquire_many(
allocator, 2, &signable, sizeof(struct aws_signable), &impl, sizeof(struct aws_signable_chunk_impl));
if (signable == NULL || impl == NULL) {
return NULL;
}
AWS_ZERO_STRUCT(*signable);
AWS_ZERO_STRUCT(*impl);
signable->allocator = allocator;
signable->vtable = &s_signable_chunk_vtable;
signable->impl = impl;
impl->chunk_data = aws_input_stream_acquire(chunk_data);
impl->previous_signature = aws_string_new_from_array(allocator, previous_signature.ptr, previous_signature.len);
if (impl->previous_signature == NULL) {
goto on_error;
}
return signable;
on_error:
aws_signable_destroy(signable);
return NULL;
}
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