2f21adc141
Bug: webrtc:416445288 Change-Id: I6eb49d95aa8000812b5299d25198a79a8c069ce7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/390400 Commit-Queue: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Auto-Submit: Evan Shrubsole <eshr@webrtc.org> Cr-Commit-Position: refs/heads/main@{#44606}
50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
/*
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* Copyright (c) 2025 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/base64.h"
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#include <optional>
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#include <string>
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#include <utility>
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#include "absl/algorithm/container.h"
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#include "absl/strings/ascii.h"
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#include "absl/strings/escaping.h"
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#include "absl/strings/string_view.h"
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namespace webrtc {
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namespace {
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bool IsStrictBase64(absl::string_view data) {
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// Strict base64 must be a multiple of 4 bytes and have no whitespace.
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return data.size() % 4 == 0 && absl::c_none_of(data, absl::ascii_isspace);
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}
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} // namespace
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std::string Base64Encode(absl::string_view data) {
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return absl::Base64Escape(data);
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}
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std::optional<std::string> Base64Decode(absl::string_view data,
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Base64DecodeOptions options) {
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// absl::Base64Unescape is forgiving. Return nullopt if the input is not
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// strict.
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if (options == Base64DecodeOptions::kStrict && !IsStrictBase64(data)) {
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return std::nullopt;
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}
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std::string dest;
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return absl::Base64Unescape(data, &dest) ? std::make_optional(std::move(dest))
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: std::nullopt;
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}
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} // namespace webrtc
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