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- // Copyright 2019 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "remoting/signaling/signaling_id_util.h"
- #include <stddef.h>
- #include "base/logging.h"
- #include "base/strings/string_util.h"
- namespace remoting {
- namespace {
- constexpr char kFtlResourcePrefix[] = "chromoting_ftl_";
- constexpr char kGmailDomain[] = "gmail.com";
- constexpr char kGooglemailDomain[] = "googlemail.com";
- } // namespace
- std::string NormalizeSignalingId(const std::string& id) {
- std::string email;
- std::string resource;
- if (SplitSignalingIdResource(id, &email, &resource)) {
- std::string normalized_email = resource.find(kFtlResourcePrefix) == 0
- ? GetCanonicalEmail(email)
- : base::ToLowerASCII(email);
- return normalized_email + "/" + resource;
- }
- return base::ToLowerASCII(email);
- }
- std::string GetCanonicalEmail(const std::string& email) {
- DCHECK(email.find('/') == std::string::npos)
- << "This function expects an email address, not a signaling ID.";
- std::string canonical_email = base::ToLowerASCII(email);
- base::TrimString(canonical_email, base::kWhitespaceASCII, &canonical_email);
- size_t at_index = canonical_email.find('@');
- if (at_index == std::string::npos) {
- LOG(ERROR) << "Unexpected email address. Character '@' is missing.";
- return canonical_email;
- }
- std::string username = canonical_email.substr(0, at_index);
- std::string domain = canonical_email.substr(at_index + 1);
- if (domain == kGmailDomain || domain == kGooglemailDomain) {
- // GMail/GoogleMail domains ignore dots, whereas other domains may not.
- base::RemoveChars(username, ".", &username);
- return username + '@' + kGmailDomain;
- }
- return canonical_email;
- }
- bool SplitSignalingIdResource(const std::string& full_id,
- std::string* email,
- std::string* resource) {
- size_t slash_index = full_id.find('/');
- if (slash_index == std::string::npos) {
- if (email) {
- *email = full_id;
- }
- if (resource) {
- resource->clear();
- }
- return false;
- }
- if (email) {
- *email = full_id.substr(0, slash_index);
- }
- if (resource) {
- *resource = full_id.substr(slash_index + 1);
- }
- return true;
- }
- } // namespace remoting
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