123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156 |
- // Copyright 2013 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 "components/favicon_base/favicon_url_parser.h"
- #include "base/notreached.h"
- #include "base/strings/string_number_conversions.h"
- #include "components/favicon_base/favicon_types.h"
- #include "net/base/url_util.h"
- #include "ui/base/webui/web_ui_util.h"
- #include "ui/gfx/favicon_size.h"
- namespace chrome {
- namespace {
- // Returns true if |search| is a substring of |path| which starts at
- // |start_index|.
- bool HasSubstringAt(const std::string& path,
- size_t start_index,
- const std::string& search) {
- return path.compare(start_index, search.length(), search) == 0;
- }
- // Parse with legacy FaviconUrlFormat::kFavicon format.
- bool ParseFaviconPathWithLegacyFormat(const std::string& path,
- chrome::ParsedFaviconPath* parsed) {
- // Parameters which can be used in chrome://favicon path. See file
- // "favicon_url_parser.h" for a description of what each one does.
- const char kIconURLParameter[] = "iconurl/";
- const char kSizeParameter[] = "size/";
- *parsed = chrome::ParsedFaviconPath();
- if (path.empty())
- return false;
- size_t parsed_index = 0;
- if (HasSubstringAt(path, parsed_index, kSizeParameter)) {
- parsed_index += strlen(kSizeParameter);
- size_t slash = path.find("/", parsed_index);
- if (slash == std::string::npos)
- return false;
- size_t scale_delimiter = path.find("@", parsed_index);
- std::string size_str;
- std::string scale_str;
- if (scale_delimiter == std::string::npos) {
- // Support the legacy size format of 'size/aa/' where 'aa' is the desired
- // size in DIP for the sake of not regressing the extensions which use it.
- size_str = path.substr(parsed_index, slash - parsed_index);
- } else {
- size_str = path.substr(parsed_index, scale_delimiter - parsed_index);
- scale_str = path.substr(scale_delimiter + 1,
- slash - scale_delimiter - 1);
- }
- if (!base::StringToInt(size_str, &parsed->size_in_dip))
- return false;
- if (!scale_str.empty())
- webui::ParseScaleFactor(scale_str, &parsed->device_scale_factor);
- parsed_index = slash + 1;
- }
- if (HasSubstringAt(path, parsed_index, kIconURLParameter)) {
- parsed_index += strlen(kIconURLParameter);
- parsed->icon_url = path.substr(parsed_index);
- } else {
- parsed->page_url = path.substr(parsed_index);
- }
- // The parsed index needs to be returned in order to allow Instant Extended
- // to translate favicon URLs using advanced parameters.
- // Example:
- // "chrome-search://favicon/size/16@2x/<renderer-id>/<most-visited-id>"
- // would be translated to:
- // "chrome-search://favicon/size/16@2x/<most-visited-item-with-given-id>".
- parsed->path_index = parsed_index;
- return true;
- }
- // Parse with FaviconUrlFormat::kFavicon2 format.
- bool ParseFaviconPathWithFavicon2Format(const std::string& path,
- chrome::ParsedFaviconPath* parsed) {
- if (path.empty())
- return false;
- GURL query_url = GURL("chrome://favicon2/").Resolve(path);
- *parsed = chrome::ParsedFaviconPath();
- for (net::QueryIterator it(query_url); !it.IsAtEnd(); it.Advance()) {
- const base::StringPiece key = it.GetKey();
- // Note: each of these keys can be used in chrome://favicon2 path. See file
- // "favicon_url_parser.h" for a description of what each one does.
- if (key == "allowGoogleServerFallback") {
- const std::string val = it.GetUnescapedValue();
- if (!(val == "0" || val == "1"))
- return false;
- parsed->allow_favicon_server_fallback = val == "1";
- } else if (key == "showFallbackMonogram") {
- parsed->show_fallback_monogram = true;
- } else if (key == "iconUrl") {
- parsed->icon_url = it.GetUnescapedValue();
- } else if (key == "pageUrl") {
- parsed->page_url = it.GetUnescapedValue();
- } else if (key == "scaleFactor" &&
- !webui::ParseScaleFactor(it.GetUnescapedValue(),
- &parsed->device_scale_factor)) {
- return false;
- } else if (key == "size" && !base::StringToInt(it.GetUnescapedValue(),
- &parsed->size_in_dip)) {
- return false;
- }
- }
- if (parsed->page_url.empty() && parsed->icon_url.empty())
- return false;
- if (parsed->allow_favicon_server_fallback && parsed->page_url.empty()) {
- // Since the server is queried by page url, we'll fail if no non-empty page
- // url is provided and the fallback parameter is still set to true.
- NOTIMPLEMENTED();
- return false;
- }
- return true;
- }
- } // namespace
- ParsedFaviconPath::ParsedFaviconPath() = default;
- ParsedFaviconPath::ParsedFaviconPath(const ParsedFaviconPath& other) = default;
- ParsedFaviconPath& ParsedFaviconPath::operator=(
- const ParsedFaviconPath& other) = default;
- bool ParseFaviconPath(const std::string& path,
- FaviconUrlFormat format,
- ParsedFaviconPath* parsed) {
- switch (format) {
- case FaviconUrlFormat::kFaviconLegacy:
- return ParseFaviconPathWithLegacyFormat(path, parsed);
- case FaviconUrlFormat::kFavicon2:
- return ParseFaviconPathWithFavicon2Format(path, parsed);
- }
- NOTREACHED();
- return false;
- }
- } // namespace chrome
|