Aws::String AWSAuthV4Signer::ComputePayloadHash(Aws::Http::HttpRequest& request) const
{
if (!request.GetContentBody())
{
AWS_LOGSTREAM_DEBUG(v4LogTag, "Using cached empty string sha256 " << EMPTY_STRING_SHA256 << " because payload is empty.");
return EMPTY_STRING_SHA256;
}
//compute hash on payload if it exists.
auto hashResult = m_hash->Calculate(*request.GetContentBody());
if(request.GetContentBody())
{
request.GetContentBody()->clear();
request.GetContentBody()->seekg(0);
}
if (!hashResult.IsSuccess())
{
AWS_LOGSTREAM_ERROR(v4LogTag, "Unable to hash (sha256) request body");
return "";
}
auto sha256Digest = hashResult.GetResult();
Aws::String payloadHash(HashingUtils::HexEncode(sha256Digest));
AWS_LOGSTREAM_DEBUG(v4LogTag, "Calculated sha256 " << payloadHash << " for payload.");
return payloadHash;
}
Aws::String AWSAuthV4Signer::ComputePayloadHash(Aws::Http::HttpRequest& request) const
{
//compute hash on payload if it exists.
auto hashResult = request.GetContentBody() ? m_hash->Calculate(*request.GetContentBody())
: m_hash->Calculate("");
if (!hashResult.IsSuccess())
{
AWS_LOG_ERROR(v4LogTag, "Unable to hash (sha256) request body");
return "";
}
auto sha256Digest = hashResult.GetResult();
Aws::String payloadHash(HashingUtils::HexEncode(sha256Digest));
AWS_LOGSTREAM_DEBUG(v4LogTag, "Calculated sha256 " << payloadHash << " for payload.");
return std::move(payloadHash);
}
std::shared_ptr<Aws::Http::HttpResponse> NetlibHttpClient::MakeRequest(
Aws::Http::HttpRequest& request,
Aws::Utils::RateLimits::RateLimiterInterface* readLimiter,
Aws::Utils::RateLimits::RateLimiterInterface* writeLimiter) const {
// AWS allows rate limiters to be passed around, but we are doing rate
// limiting on the logger plugin side and so don't implement this.
if (readLimiter != nullptr || writeLimiter != nullptr) {
LOG(WARNING) << "Read/write limiters are unsupported";
}
Aws::Http::URI uri = request.GetUri();
uri.SetPath(Aws::Http::URI::URLEncodePath(uri.GetPath()));
Aws::String url = uri.GetURIString();
bn::http::client client = TLSTransport().getClient();
bn::http::client::request req(url);
for (const auto& requestHeader : request.GetHeaders()) {
req << bn::header(requestHeader.first, requestHeader.second);
}
std::string body;
if (request.GetContentBody()) {
std::stringstream ss;
ss << request.GetContentBody()->rdbuf();
body = ss.str();
}
auto response = std::make_shared<Standard::StandardHttpResponse>(request);
try {
bn::http::client::response resp;
switch (request.GetMethod()) {
case Aws::Http::HttpMethod::HTTP_GET:
resp = client.get(req);
if (resp.status() == 301 || resp.status() == 302) {
VLOG(1) << "Attempting custom redirect as cpp-netlib does not support "
"redirects";
for (const auto& header : resp.headers()) {
if (header.first == "Location") {
req.uri(header.second);
resp = client.get(req);
}
}
}
break;
case Aws::Http::HttpMethod::HTTP_POST:
resp = client.post(req, body, request.GetContentType());
break;
case Aws::Http::HttpMethod::HTTP_PUT:
resp = client.put(req, body, request.GetContentType());
break;
case Aws::Http::HttpMethod::HTTP_HEAD:
resp = client.head(req);
break;
case Aws::Http::HttpMethod::HTTP_PATCH:
LOG(ERROR) << "cpp-netlib does not support HTTP PATCH";
return nullptr;
break;
case Aws::Http::HttpMethod::HTTP_DELETE:
resp = client.delete_(req);
break;
default:
LOG(ERROR) << "Unrecognized HTTP Method used: "
<< static_cast<int>(request.GetMethod());
return nullptr;
break;
}
response->SetResponseCode(
static_cast<Aws::Http::HttpResponseCode>(resp.status()));
for (const auto& header : resp.headers()) {
if (header.first == "content-type") {
response->SetContentType(header.second);
}
response->AddHeader(header.first, header.second);
}
response->GetResponseBody() << resp.body();
} catch (const std::exception& /*e*/) {
LOG(ERROR) << "Exception making HTTP request to URL: " << url;
return nullptr;
}
return response;
}