3db59439c9
* add API ListBlobsByHierarchy * fix compiler error on GCC 8 * Update Blob API version to 2019-12-12 * use lowercase header key
90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
// Copyright (c) Microsoft Corporation. All rights reserved.
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// SPDX-License-Identifier: MIT
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#include "common/shared_key_policy.hpp"
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#include "common/crypt.hpp"
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#include "common/storage_url_builder.hpp"
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#include <algorithm>
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#include <cctype>
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namespace Azure { namespace Storage {
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std::string SharedKeyPolicy::GetSignature(const Core::Http::Request& request) const
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{
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std::string string_to_sign;
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string_to_sign += Azure::Core::Http::HttpMethodToString(request.GetMethod()) + "\n";
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const auto& headers = request.GetHeaders();
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for (std::string headerName :
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{"Content-Encoding",
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"Content-Language",
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"Content-Length",
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"Content-MD5",
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"Content-Type",
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"Date",
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"If-Modified-Since",
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"If-Match",
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"If-None-Match",
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"If-Unmodified-Since",
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"Range"})
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{
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auto ite = headers.find(Azure::Core::Details::ToLower(headerName));
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if (ite != headers.end())
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{
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if (headerName == "Content-Length" && ite->second == "0")
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{
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// do nothing
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}
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else
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{
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string_to_sign += ite->second;
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}
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}
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string_to_sign += "\n";
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}
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// canonicalized headers
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const std::string prefix = "x-ms-";
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std::vector<std::pair<std::string, std::string>> ordered_kv;
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for (auto ite = headers.lower_bound(prefix);
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ite != headers.end() && ite->first.substr(0, prefix.length()) == prefix;
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++ite)
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{
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std::string key = ite->first;
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std::transform(key.begin(), key.end(), key.begin(), [](char c) {
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return static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
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});
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ordered_kv.emplace_back(std::make_pair(std::move(key), ite->second));
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}
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std::sort(ordered_kv.begin(), ordered_kv.end());
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for (const auto& p : ordered_kv)
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{
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string_to_sign += p.first + ":" + p.second + "\n";
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}
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ordered_kv.clear();
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// canonicalized resource
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UrlBuilder resourceUrl(request.GetEncodedUrl());
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string_to_sign += "/" + m_credential->AccountName + "/" + resourceUrl.GetPath() + "\n";
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for (const auto& query : resourceUrl.GetQuery())
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{
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std::string key = query.first;
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std::transform(key.begin(), key.end(), key.begin(), [](char c) {
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return static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
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});
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ordered_kv.emplace_back(std::make_pair(std::move(key), query.second));
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}
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std::sort(ordered_kv.begin(), ordered_kv.end());
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for (const auto& p : ordered_kv)
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{
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string_to_sign += p.first + ":" + p.second + "\n";
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}
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// remove last linebreak
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string_to_sign.pop_back();
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return Base64Encode(HMAC_SHA256(string_to_sign, Base64Decode(m_credential->GetAccountKey())));
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}
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}} // namespace Azure::Storage
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