// Copyright 2014 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/search_engines/template_url.h" #include #include #include "base/command_line.h" #include "base/format_macros.h" #include "base/i18n/icu_string_conversions.h" #include "base/i18n/rtl.h" #include "base/logging.h" #include "base/macros.h" #include "base/metrics/field_trial.h" #include "base/strings/string_number_conversions.h" #include "base/strings/string_piece.h" #include "base/strings/string_split.h" #include "base/strings/string_util.h" #include "base/strings/stringprintf.h" #include "base/strings/utf_string_conversions.h" #include "build/build_config.h" #include "components/google/core/browser/google_util.h" #include "components/metrics/proto/omnibox_input_type.pb.h" #include "components/search_engines/search_engines_switches.h" #include "components/search_engines/search_terms_data.h" #include "components/search_engines/template_url_prepopulate_data.h" #include "components/url_formatter/url_formatter.h" #include "google_apis/google_api_keys.h" #include "net/base/escape.h" #include "net/base/mime_util.h" #include "ui/base/device_form_factor.h" #include "url/gurl.h" namespace { // The TemplateURLRef has any number of terms that need to be replaced. Each of // the terms is enclosed in braces. If the character preceeding the final // brace is a ?, it indicates the term is optional and can be replaced with // an empty string. const char kStartParameter = '{'; const char kEndParameter = '}'; const char kOptional = '?'; // Known parameters found in the URL. const char kSearchTermsParameter[] = "searchTerms"; const char kSearchTermsParameterFull[] = "{searchTerms}"; const char kSearchTermsParameterFullEscaped[] = "%7BsearchTerms%7D"; // Same as kSearchTermsParameter, with no escaping. const char kGoogleUnescapedSearchTermsParameter[] = "google:unescapedSearchTerms"; const char kGoogleUnescapedSearchTermsParameterFull[] = "{google:unescapedSearchTerms}"; // Display value for kSearchTermsParameter. const char kDisplaySearchTerms[] = "%s"; // Display value for kGoogleUnescapedSearchTermsParameter. const char kDisplayUnescapedSearchTerms[] = "%S"; // Used if the count parameter is not optional. Indicates we want 10 search // results. const char kDefaultCount[] = "10"; // Used if the output encoding parameter is required. const char kOutputEncodingType[] = "UTF-8"; // Attempts to encode |terms| and |original_query| in |encoding| and escape // them. |terms| may be escaped as path or query depending on |is_in_query|; // |original_query| is always escaped as query. Returns whether the encoding // process succeeded. bool TryEncoding(const base::string16& terms, const base::string16& original_query, const char* encoding, bool is_in_query, base::string16* escaped_terms, base::string16* escaped_original_query) { DCHECK(escaped_terms); DCHECK(escaped_original_query); std::string encoded_terms; if (!base::UTF16ToCodepage(terms, encoding, base::OnStringConversionError::SKIP, &encoded_terms)) return false; *escaped_terms = base::UTF8ToUTF16(is_in_query ? net::EscapeQueryParamValue(encoded_terms, true) : net::EscapePath(encoded_terms)); if (original_query.empty()) return true; std::string encoded_original_query; if (!base::UTF16ToCodepage(original_query, encoding, base::OnStringConversionError::SKIP, &encoded_original_query)) return false; *escaped_original_query = base::UTF8ToUTF16( net::EscapeQueryParamValue(encoded_original_query, true)); return true; } // Returns true if the search term placeholder is present, and also produces // the constant prefix/suffix found. bool TryMatchSearchParam(base::StringPiece text, base::StringPiece pattern, std::string* prefix, std::string* suffix) { auto pos = text.find(pattern); if (pos == base::StringPiece::npos) return false; text.substr(0, pos).CopyToString(prefix); text.substr(pos + pattern.length()).CopyToString(suffix); return true; } // Extract query key and host given a list of parameters coming from the URL // query or ref. struct SearchTermsKeyResult { std::string key; std::string value_prefix; std::string value_suffix; bool found() const { return !key.empty(); } }; SearchTermsKeyResult FindSearchTermsKey(const std::string& params) { SearchTermsKeyResult result; if (params.empty()) return result; url::Component query, key, value; query.len = static_cast(params.size()); while (url::ExtractQueryKeyValue(params.c_str(), &query, &key, &value)) { if (key.is_nonempty() && value.is_nonempty()) { const base::StringPiece value_string(params.c_str() + value.begin, value.len); if (TryMatchSearchParam(value_string, kSearchTermsParameterFull, &result.value_prefix, &result.value_suffix) || TryMatchSearchParam(value_string, kGoogleUnescapedSearchTermsParameterFull, &result.value_prefix, &result.value_suffix)) { result.key = params.substr(key.begin, key.len); break; } } } return result; } // Extract the position of the search terms' parameter in the URL path. bool FindSearchTermsInPath(const std::string& path, url::Component* parameter_position) { DCHECK(parameter_position); parameter_position->reset(); const size_t begin = path.find(kSearchTermsParameterFullEscaped); if (begin == std::string::npos) return false; parameter_position->begin = begin; parameter_position->len = arraysize(kSearchTermsParameterFullEscaped) - 1; return true; } bool IsTemplateParameterString(const std::string& param) { return (param.length() > 2) && (*(param.begin()) == kStartParameter) && (*(param.rbegin()) == kEndParameter); } } // namespace // TemplateURLRef::SearchTermsArgs -------------------------------------------- TemplateURLRef::SearchTermsArgs::SearchTermsArgs( const base::string16& search_terms) : search_terms(search_terms), input_type(metrics::OmniboxInputType::INVALID), accepted_suggestion(NO_SUGGESTIONS_AVAILABLE), cursor_position(base::string16::npos), page_classification(metrics::OmniboxEventProto::INVALID_SPEC), append_extra_query_params(false), force_instant_results(false), from_app_list(false), contextual_search_params(ContextualSearchParams()) {} TemplateURLRef::SearchTermsArgs::SearchTermsArgs(const SearchTermsArgs& other) = default; TemplateURLRef::SearchTermsArgs::~SearchTermsArgs() { } TemplateURLRef::SearchTermsArgs::ContextualSearchParams:: ContextualSearchParams() : version(-1), start(base::string16::npos), end(base::string16::npos), contextual_cards_version(0) {} TemplateURLRef::SearchTermsArgs::ContextualSearchParams::ContextualSearchParams( int version, const std::string& selection, const std::string& base_page_url, int contextual_cards_version) : version(version), start(base::string16::npos), end(base::string16::npos), selection(selection), base_page_url(base_page_url), contextual_cards_version(contextual_cards_version) {} TemplateURLRef::SearchTermsArgs::ContextualSearchParams::ContextualSearchParams( int version, size_t start, size_t end, const std::string& selection, const std::string& content, const std::string& base_page_url, const std::string& encoding, int contextual_cards_version) : version(version), start(start), end(end), selection(selection), content(content), base_page_url(base_page_url), encoding(encoding), contextual_cards_version(contextual_cards_version) {} TemplateURLRef::SearchTermsArgs::ContextualSearchParams::ContextualSearchParams( const ContextualSearchParams& other) = default; TemplateURLRef::SearchTermsArgs::ContextualSearchParams:: ~ContextualSearchParams() { } // TemplateURLRef ------------------------------------------------------------- TemplateURLRef::TemplateURLRef(const TemplateURL* owner, Type type) : owner_(owner), type_(type), index_in_owner_(0), parsed_(false), valid_(false), supports_replacements_(false), search_term_position_in_path_(std::string::npos), search_term_key_location_(url::Parsed::QUERY), prepopulated_(false) { DCHECK(owner_); DCHECK_NE(INDEXED, type_); } TemplateURLRef::TemplateURLRef(const TemplateURL* owner, size_t index_in_owner) : owner_(owner), type_(INDEXED), index_in_owner_(index_in_owner), parsed_(false), valid_(false), supports_replacements_(false), search_term_position_in_path_(std::string::npos), search_term_key_location_(url::Parsed::QUERY), prepopulated_(false) { DCHECK(owner_); DCHECK_LT(index_in_owner_, owner_->alternate_urls().size()); } TemplateURLRef::~TemplateURLRef() { } TemplateURLRef::TemplateURLRef(const TemplateURLRef& source) = default; TemplateURLRef& TemplateURLRef::operator=(const TemplateURLRef& source) = default; std::string TemplateURLRef::GetURL() const { switch (type_) { case SEARCH: return owner_->url(); case SUGGEST: return owner_->suggestions_url(); case INSTANT: return owner_->instant_url(); case IMAGE: return owner_->image_url(); case NEW_TAB: return owner_->new_tab_url(); case CONTEXTUAL_SEARCH: return owner_->contextual_search_url(); case INDEXED: return owner_->alternate_urls()[index_in_owner_]; default: NOTREACHED(); return std::string(); // NOLINT } } std::string TemplateURLRef::GetPostParamsString() const { switch (type_) { case INDEXED: case SEARCH: return owner_->search_url_post_params(); case SUGGEST: return owner_->suggestions_url_post_params(); case INSTANT: return owner_->instant_url_post_params(); case NEW_TAB: return std::string(); case CONTEXTUAL_SEARCH: return std::string(); case IMAGE: return owner_->image_url_post_params(); default: NOTREACHED(); return std::string(); // NOLINT } } bool TemplateURLRef::UsesPOSTMethod( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return !post_params_.empty(); } bool TemplateURLRef::EncodeFormData(const PostParams& post_params, PostContent* post_content) const { if (post_params.empty()) return true; if (!post_content) return false; const char kUploadDataMIMEType[] = "multipart/form-data; boundary="; // Each name/value pair is stored in a body part which is preceded by a // boundary delimiter line. std::string boundary = net::GenerateMimeMultipartBoundary(); // Sets the content MIME type. post_content->first = kUploadDataMIMEType; post_content->first += boundary; // Encodes the post parameters. std::string* post_data = &post_content->second; post_data->clear(); for (const auto& param : post_params) { DCHECK(!param.name.empty()); net::AddMultipartValueForUpload(param.name, param.value, boundary, param.content_type, post_data); } net::AddMultipartFinalDelimiterForUpload(boundary, post_data); return true; } bool TemplateURLRef::SupportsReplacement( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return valid_ && supports_replacements_; } std::string TemplateURLRef::ReplaceSearchTerms( const SearchTermsArgs& search_terms_args, const SearchTermsData& search_terms_data, PostContent* post_content) const { ParseIfNecessary(search_terms_data); if (!valid_) return std::string(); std::string url(HandleReplacements(search_terms_args, search_terms_data, post_content)); GURL gurl(url); if (!gurl.is_valid()) return url; std::vector query_params; if (search_terms_args.append_extra_query_params) { std::string extra_params( base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( switches::kExtraSearchQueryParams)); if (!extra_params.empty()) query_params.push_back(extra_params); } if (!search_terms_args.suggest_query_params.empty()) query_params.push_back(search_terms_args.suggest_query_params); if (!gurl.query().empty()) query_params.push_back(gurl.query()); if (query_params.empty()) return url; GURL::Replacements replacements; std::string query_str = base::JoinString(query_params, "&"); replacements.SetQueryStr(query_str); return gurl.ReplaceComponents(replacements).possibly_invalid_spec(); } bool TemplateURLRef::IsValid(const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return valid_; } base::string16 TemplateURLRef::DisplayURL( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); std::string result(GetURL()); if (valid_ && !replacements_.empty()) { base::ReplaceSubstringsAfterOffset(&result, 0, kSearchTermsParameterFull, kDisplaySearchTerms); base::ReplaceSubstringsAfterOffset(&result, 0, kGoogleUnescapedSearchTermsParameterFull, kDisplayUnescapedSearchTerms); } return base::UTF8ToUTF16(result); } // static std::string TemplateURLRef::DisplayURLToURLRef( const base::string16& display_url) { std::string result = base::UTF16ToUTF8(display_url); base::ReplaceSubstringsAfterOffset(&result, 0, kDisplaySearchTerms, kSearchTermsParameterFull); base::ReplaceSubstringsAfterOffset(&result, 0, kDisplayUnescapedSearchTerms, kGoogleUnescapedSearchTermsParameterFull); return result; } const std::string& TemplateURLRef::GetHost( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return host_; } const std::string& TemplateURLRef::GetPath( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return path_; } const std::string& TemplateURLRef::GetSearchTermKey( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return search_term_key_; } size_t TemplateURLRef::GetSearchTermPositionInPath( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return search_term_position_in_path_; } url::Parsed::ComponentType TemplateURLRef::GetSearchTermKeyLocation( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); return search_term_key_location_; } base::string16 TemplateURLRef::SearchTermToString16( const std::string& term) const { const std::vector& encodings = owner_->input_encodings(); base::string16 result; net::UnescapeRule::Type unescape_rules = net::UnescapeRule::SPACES | net::UnescapeRule::PATH_SEPARATORS | net::UnescapeRule::URL_SPECIAL_CHARS_EXCEPT_PATH_SEPARATORS; if (search_term_key_location_ != url::Parsed::PATH) unescape_rules |= net::UnescapeRule::REPLACE_PLUS_WITH_SPACE; std::string unescaped = net::UnescapeURLComponent(term, unescape_rules); for (size_t i = 0; i < encodings.size(); ++i) { if (base::CodepageToUTF16(unescaped, encodings[i].c_str(), base::OnStringConversionError::FAIL, &result)) return result; } // Always fall back on UTF-8 if it works. if (base::CodepageToUTF16(unescaped, base::kCodepageUTF8, base::OnStringConversionError::FAIL, &result)) return result; // When nothing worked, just use the escaped text. We have no idea what the // encoding is. We need to substitute spaces for pluses ourselves since we're // not sending it through an unescaper. result = base::UTF8ToUTF16(term); if (unescape_rules & net::UnescapeRule::REPLACE_PLUS_WITH_SPACE) std::replace(result.begin(), result.end(), '+', ' '); return result; } bool TemplateURLRef::HasGoogleBaseURLs( const SearchTermsData& search_terms_data) const { ParseIfNecessary(search_terms_data); for (size_t i = 0; i < replacements_.size(); ++i) { if ((replacements_[i].type == GOOGLE_BASE_URL) || (replacements_[i].type == GOOGLE_BASE_SUGGEST_URL)) return true; } return false; } bool TemplateURLRef::ExtractSearchTermsFromURL( const GURL& url, base::string16* search_terms, const SearchTermsData& search_terms_data, url::Parsed::ComponentType* search_terms_component, url::Component* search_terms_position) const { DCHECK(search_terms); search_terms->clear(); ParseIfNecessary(search_terms_data); // We need a search term in the template URL to extract something. if (search_term_key_.empty() && (search_term_key_location_ != url::Parsed::PATH)) return false; // Host, port, and path must match. if ((url.host() != host_) || (url.port() != port_) || ((url.path() != path_) && (search_term_key_location_ != url::Parsed::PATH))) { return false; } std::string source; url::Component position; if (search_term_key_location_ == url::Parsed::PATH) { source = url.path(); // Characters in the path before and after search terms must match. if (source.length() < path_.length()) return false; position.begin = search_term_position_in_path_; position.len = source.length() - path_.length(); if (source.substr(0, position.begin) + source.substr(position.end()) != path_) return false; } else { DCHECK(search_term_key_location_ == url::Parsed::QUERY || search_term_key_location_ == url::Parsed::REF); source = (search_term_key_location_ == url::Parsed::QUERY) ? url.query() : url.ref(); url::Component query, key, value; query.len = static_cast(source.size()); bool key_found = false; while (url::ExtractQueryKeyValue(source.c_str(), &query, &key, &value)) { if (key.is_nonempty()) { if (source.substr(key.begin, key.len) == search_term_key_) { // Fail if search term key is found twice. if (key_found) return false; // If the query parameter does not contain the expected prefix and // suffix, then this is not a match. base::StringPiece search_term = base::StringPiece(source).substr(value.begin, value.len); if (!search_term.starts_with(search_term_value_prefix_) || !search_term.ends_with(search_term_value_suffix_)) continue; key_found = true; position = url::MakeRange(value.begin + search_term_value_prefix_.size(), value.end() - search_term_value_suffix_.size()); } } } if (!key_found) return false; } // Extract the search term. *search_terms = SearchTermToString16(source.substr(position.begin, position.len)); if (search_terms_component) *search_terms_component = search_term_key_location_; if (search_terms_position) *search_terms_position = position; return true; } void TemplateURLRef::InvalidateCachedValues() const { supports_replacements_ = valid_ = parsed_ = false; host_.clear(); port_.clear(); path_.clear(); search_term_key_.clear(); search_term_position_in_path_ = std::string::npos; search_term_key_location_ = url::Parsed::QUERY; replacements_.clear(); post_params_.clear(); } bool TemplateURLRef::ParseParameter(size_t start, size_t end, std::string* url, Replacements* replacements) const { DCHECK(start != std::string::npos && end != std::string::npos && end > start); size_t length = end - start - 1; bool optional = false; // Make a copy of |url| that can be referenced in StringPieces below. |url| is // modified, so that can't be used in StringPiece. const std::string original_url(*url); if (original_url[end - 1] == kOptional) { optional = true; length--; } const base::StringPiece parameter(original_url.begin() + start + 1, original_url.begin() + start + 1 + length); const base::StringPiece full_parameter(original_url.begin() + start, original_url.begin() + end + 1); // Remove the parameter from the string. For parameters who replacement is // constant and already known, just replace them directly. For other cases, // like parameters whose values may change over time, use |replacements|. url->erase(start, end - start + 1); if (parameter == kSearchTermsParameter) { replacements->push_back(Replacement(SEARCH_TERMS, start)); } else if (parameter == "count") { if (!optional) url->insert(start, kDefaultCount); } else if (parameter == "google:assistedQueryStats") { replacements->push_back(Replacement(GOOGLE_ASSISTED_QUERY_STATS, start)); } else if (parameter == "google:baseURL") { replacements->push_back(Replacement(GOOGLE_BASE_URL, start)); } else if (parameter == "google:baseSuggestURL") { replacements->push_back(Replacement(GOOGLE_BASE_SUGGEST_URL, start)); } else if (parameter == "google:currentPageUrl") { replacements->push_back(Replacement(GOOGLE_CURRENT_PAGE_URL, start)); } else if (parameter == "google:cursorPosition") { replacements->push_back(Replacement(GOOGLE_CURSOR_POSITION, start)); } else if (parameter == "google:forceInstantResults") { replacements->push_back(Replacement(GOOGLE_FORCE_INSTANT_RESULTS, start)); } else if (parameter == "google:imageOriginalHeight") { replacements->push_back( Replacement(TemplateURLRef::GOOGLE_IMAGE_ORIGINAL_HEIGHT, start)); } else if (parameter == "google:imageOriginalWidth") { replacements->push_back( Replacement(TemplateURLRef::GOOGLE_IMAGE_ORIGINAL_WIDTH, start)); } else if (parameter == "google:imageSearchSource") { replacements->push_back( Replacement(TemplateURLRef::GOOGLE_IMAGE_SEARCH_SOURCE, start)); } else if (parameter == "google:imageThumbnail") { replacements->push_back( Replacement(TemplateURLRef::GOOGLE_IMAGE_THUMBNAIL, start)); } else if (parameter == "google:imageURL") { replacements->push_back(Replacement(TemplateURLRef::GOOGLE_IMAGE_URL, start)); } else if (parameter == "google:inputType") { replacements->push_back(Replacement(TemplateURLRef::GOOGLE_INPUT_TYPE, start)); } else if (parameter == "google:instantExtendedEnabledParameter") { replacements->push_back(Replacement(GOOGLE_INSTANT_EXTENDED_ENABLED, start)); } else if (parameter == "google:instantExtendedEnabledKey") { url->insert(start, google_util::kInstantExtendedAPIParam); } else if (parameter == "google:iOSSearchLanguage") { replacements->push_back(Replacement(GOOGLE_IOS_SEARCH_LANGUAGE, start)); } else if (parameter == "google:contextualSearchVersion") { replacements->push_back( Replacement(GOOGLE_CONTEXTUAL_SEARCH_VERSION, start)); } else if (parameter == "google:contextualSearchContextData") { replacements->push_back( Replacement(GOOGLE_CONTEXTUAL_SEARCH_CONTEXT_DATA, start)); } else if (parameter == "google:originalQueryForSuggestion") { replacements->push_back(Replacement(GOOGLE_ORIGINAL_QUERY_FOR_SUGGESTION, start)); } else if (parameter == "google:pageClassification") { replacements->push_back(Replacement(GOOGLE_PAGE_CLASSIFICATION, start)); } else if (parameter == "google:prefetchQuery") { replacements->push_back(Replacement(GOOGLE_PREFETCH_QUERY, start)); } else if (parameter == "google:RLZ") { replacements->push_back(Replacement(GOOGLE_RLZ, start)); } else if (parameter == "google:searchClient") { replacements->push_back(Replacement(GOOGLE_SEARCH_CLIENT, start)); } else if (parameter == "google:searchFieldtrialParameter") { replacements->push_back(Replacement(GOOGLE_SEARCH_FIELDTRIAL_GROUP, start)); } else if (parameter == "google:searchVersion") { replacements->push_back(Replacement(GOOGLE_SEARCH_VERSION, start)); } else if (parameter == "google:sessionToken") { replacements->push_back(Replacement(GOOGLE_SESSION_TOKEN, start)); } else if (parameter == "google:sourceId") { #if defined(OS_ANDROID) || defined(OS_IOS) url->insert(start, "sourceid=chrome-mobile&"); #else url->insert(start, "sourceid=chrome&"); #endif } else if (parameter == "google:suggestAPIKeyParameter") { url->insert(start, net::EscapeQueryParamValue(google_apis::GetAPIKey(), false)); } else if (parameter == "google:suggestClient") { replacements->push_back(Replacement(GOOGLE_SUGGEST_CLIENT, start)); } else if (parameter == "google:suggestRid") { replacements->push_back(Replacement(GOOGLE_SUGGEST_REQUEST_ID, start)); } else if (parameter == kGoogleUnescapedSearchTermsParameter) { replacements->push_back(Replacement(GOOGLE_UNESCAPED_SEARCH_TERMS, start)); } else if (parameter == "yandex:searchPath") { switch (ui::GetDeviceFormFactor()) { case ui::DEVICE_FORM_FACTOR_DESKTOP: url->insert(start, "search/"); break; case ui::DEVICE_FORM_FACTOR_PHONE: url->insert(start, "search/touch/"); break; case ui::DEVICE_FORM_FACTOR_TABLET: url->insert(start, "search/pad/"); break; } } else if (parameter == "inputEncoding") { replacements->push_back(Replacement(ENCODING, start)); } else if (parameter == "language") { replacements->push_back(Replacement(LANGUAGE, start)); } else if (parameter == "outputEncoding") { if (!optional) url->insert(start, kOutputEncodingType); } else if ((parameter == "startIndex") || (parameter == "startPage")) { // We don't support these. if (!optional) url->insert(start, "1"); } else if (!prepopulated_) { // If it's a prepopulated URL, we know that it's safe to remove unknown // parameters, so just ignore this and return true below. Otherwise it could // be some garbage but can also be a javascript block. Put it back. url->insert(start, full_parameter.data(), full_parameter.size()); return false; } return true; } std::string TemplateURLRef::ParseURL(const std::string& url, Replacements* replacements, PostParams* post_params, bool* valid) const { *valid = false; std::string parsed_url = url; for (size_t last = 0; last != std::string::npos; ) { last = parsed_url.find(kStartParameter, last); if (last != std::string::npos) { size_t template_end = parsed_url.find(kEndParameter, last); if (template_end != std::string::npos) { // Since we allow Javascript in the URL, {} pairs could be nested. Match // only leaf pairs with supported parameters. size_t next_template_start = parsed_url.find(kStartParameter, last + 1); if (next_template_start == std::string::npos || next_template_start > template_end) { // If successful, ParseParameter erases from the string as such no // need to update |last|. If failed, move |last| to the end of pair. if (!ParseParameter(last, template_end, &parsed_url, replacements)) { // |template_end| + 1 may be beyond the end of the string. last = template_end; } } else { last = next_template_start; } } else { // Open brace without a closing brace, return. return std::string(); } } } // Handles the post parameters. const std::string& post_params_string = GetPostParamsString(); if (!post_params_string.empty()) { for (const base::StringPiece& cur : base::SplitStringPiece( post_params_string, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) { // The '=' delimiter is required and the name must be not empty. std::vector parts = base::SplitString( cur, "=", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); if ((parts.size() != 2U) || parts[0].empty()) return std::string(); std::string& value = parts[1]; size_t replacements_size = replacements->size(); if (IsTemplateParameterString(value)) ParseParameter(0, value.length() - 1, &value, replacements); PostParam param = { parts[0], value }; post_params->push_back(param); // If there was a replacement added, points its index to last added // PostParam. if (replacements->size() > replacements_size) { DCHECK_EQ(replacements_size + 1, replacements->size()); Replacement* r = &replacements->back(); r->is_post_param = true; r->index = post_params->size() - 1; } } DCHECK(!post_params->empty()); } *valid = true; return parsed_url; } void TemplateURLRef::ParseIfNecessary( const SearchTermsData& search_terms_data) const { if (!parsed_) { InvalidateCachedValues(); parsed_ = true; parsed_url_ = ParseURL(GetURL(), &replacements_, &post_params_, &valid_); supports_replacements_ = false; if (valid_) { bool has_only_one_search_term = false; for (Replacements::const_iterator i = replacements_.begin(); i != replacements_.end(); ++i) { if ((i->type == SEARCH_TERMS) || (i->type == GOOGLE_UNESCAPED_SEARCH_TERMS)) { if (has_only_one_search_term) { has_only_one_search_term = false; break; } has_only_one_search_term = true; supports_replacements_ = true; } } // Only parse the host/key if there is one search term. Technically there // could be more than one term, but it's uncommon; so we punt. if (has_only_one_search_term) ParseHostAndSearchTermKey(search_terms_data); } } } void TemplateURLRef::ParseHostAndSearchTermKey( const SearchTermsData& search_terms_data) const { std::string url_string(GetURL()); base::ReplaceSubstringsAfterOffset( &url_string, 0, "{google:baseURL}", search_terms_data.GoogleBaseURLValue()); base::ReplaceSubstringsAfterOffset( &url_string, 0, "{google:baseSuggestURL}", search_terms_data.GoogleBaseSuggestURLValue()); GURL url(url_string); if (!url.is_valid()) return; auto query_result = FindSearchTermsKey(url.query()); auto ref_result = FindSearchTermsKey(url.ref()); url::Component parameter_position; const bool in_query = query_result.found(); const bool in_ref = ref_result.found(); const bool in_path = FindSearchTermsInPath(url.path(), ¶meter_position); if (in_query ? (in_ref || in_path) : (in_ref == in_path)) return; // No key or multiple keys found. We only handle having one key. host_ = url.host(); port_ = url.port(); path_ = url.path(); if (in_query) { search_term_key_ = query_result.key; search_term_key_location_ = url::Parsed::QUERY; search_term_value_prefix_ = query_result.value_prefix; search_term_value_suffix_ = query_result.value_suffix; } else if (in_ref) { search_term_key_ = ref_result.key; search_term_key_location_ = url::Parsed::REF; search_term_value_prefix_ = ref_result.value_prefix; search_term_value_suffix_ = ref_result.value_suffix; } else { DCHECK(in_path); DCHECK_GE(parameter_position.begin, 1); // Path must start with '/'. search_term_key_location_ = url::Parsed::PATH; search_term_position_in_path_ = parameter_position.begin; // Remove the "{searchTerms}" itself from |path_|. path_.erase(parameter_position.begin, parameter_position.len); } } void TemplateURLRef::HandleReplacement(const std::string& name, const std::string& value, const Replacement& replacement, std::string* url) const { size_t pos = replacement.index; if (replacement.is_post_param) { DCHECK_LT(pos, post_params_.size()); DCHECK(!post_params_[pos].name.empty()); post_params_[pos].value = value; } else { url->insert(pos, name.empty() ? value : (name + "=" + value + "&")); } } std::string TemplateURLRef::HandleReplacements( const SearchTermsArgs& search_terms_args, const SearchTermsData& search_terms_data, PostContent* post_content) const { if (replacements_.empty()) { if (!post_params_.empty()) EncodeFormData(post_params_, post_content); return parsed_url_; } // Determine if the search terms are in the query or before. We're escaping // space as '+' in the former case and as '%20' in the latter case. bool is_in_query = true; for (Replacements::iterator i = replacements_.begin(); i != replacements_.end(); ++i) { if (i->type == SEARCH_TERMS) { base::string16::size_type query_start = parsed_url_.find('?'); is_in_query = query_start != base::string16::npos && (static_cast(i->index) > query_start); break; } } std::string input_encoding; base::string16 encoded_terms; base::string16 encoded_original_query; owner_->EncodeSearchTerms(search_terms_args, is_in_query, &input_encoding, &encoded_terms, &encoded_original_query); std::string url = parsed_url_; // replacements_ is ordered in ascending order, as such we need to iterate // from the back. for (Replacements::reverse_iterator i = replacements_.rbegin(); i != replacements_.rend(); ++i) { switch (i->type) { case ENCODING: HandleReplacement(std::string(), input_encoding, *i, &url); break; case GOOGLE_ASSISTED_QUERY_STATS: DCHECK(!i->is_post_param); if (!search_terms_args.assisted_query_stats.empty()) { // Get the base URL without substituting AQS to avoid infinite // recursion. We need the URL to find out if it meets all // AQS requirements (e.g. HTTPS protocol check). // See TemplateURLRef::SearchTermsArgs for more details. SearchTermsArgs search_terms_args_without_aqs(search_terms_args); search_terms_args_without_aqs.assisted_query_stats.clear(); GURL base_url(ReplaceSearchTerms( search_terms_args_without_aqs, search_terms_data, NULL)); if (base_url.SchemeIsCryptographic()) { HandleReplacement( "aqs", search_terms_args.assisted_query_stats, *i, &url); } } break; case GOOGLE_BASE_URL: DCHECK(!i->is_post_param); HandleReplacement( std::string(), search_terms_data.GoogleBaseURLValue(), *i, &url); break; case GOOGLE_BASE_SUGGEST_URL: DCHECK(!i->is_post_param); HandleReplacement( std::string(), search_terms_data.GoogleBaseSuggestURLValue(), *i, &url); break; case GOOGLE_CURRENT_PAGE_URL: DCHECK(!i->is_post_param); if (!search_terms_args.current_page_url.empty()) { const std::string& escaped_current_page_url = net::EscapeQueryParamValue(search_terms_args.current_page_url, true); HandleReplacement("url", escaped_current_page_url, *i, &url); } break; case GOOGLE_CURSOR_POSITION: DCHECK(!i->is_post_param); if (search_terms_args.cursor_position != base::string16::npos) HandleReplacement( "cp", base::StringPrintf("%" PRIuS, search_terms_args.cursor_position), *i, &url); break; case GOOGLE_FORCE_INSTANT_RESULTS: DCHECK(!i->is_post_param); HandleReplacement(std::string(), search_terms_data.ForceInstantResultsParam( search_terms_args.force_instant_results), *i, &url); break; case GOOGLE_INPUT_TYPE: DCHECK(!i->is_post_param); HandleReplacement( "oit", base::IntToString(search_terms_args.input_type), *i, &url); break; case GOOGLE_INSTANT_EXTENDED_ENABLED: DCHECK(!i->is_post_param); HandleReplacement(std::string(), search_terms_data.InstantExtendedEnabledParam( type_ == SEARCH), *i, &url); break; case GOOGLE_CONTEXTUAL_SEARCH_VERSION: if (search_terms_args.contextual_search_params.version >= 0) { HandleReplacement( "ctxs", base::IntToString( search_terms_args.contextual_search_params.version), *i, &url); } break; case GOOGLE_CONTEXTUAL_SEARCH_CONTEXT_DATA: { DCHECK(!i->is_post_param); const SearchTermsArgs::ContextualSearchParams& params = search_terms_args.contextual_search_params; std::vector args; if (params.start != std::string::npos) args.push_back("ctxs_start=" + base::SizeTToString(params.start)); if (params.end != std::string::npos) args.push_back("ctxs_end=" + base::SizeTToString(params.end)); if (!params.selection.empty()) args.push_back("q=" + params.selection); if (!params.content.empty()) args.push_back("ctxs_content=" + params.content); if (!params.base_page_url.empty()) args.push_back("ctxsl_url=" + params.base_page_url); if (!params.encoding.empty()) args.push_back("ctxs_encoding=" + params.encoding); if (params.contextual_cards_version > 0) { args.push_back("ctxsl_coca=" + base::IntToString(params.contextual_cards_version)); } HandleReplacement(std::string(), base::JoinString(args, "&"), *i, &url); break; } case GOOGLE_ORIGINAL_QUERY_FOR_SUGGESTION: DCHECK(!i->is_post_param); if (search_terms_args.accepted_suggestion >= 0 || !search_terms_args.assisted_query_stats.empty()) { HandleReplacement( "oq", base::UTF16ToUTF8(encoded_original_query), *i, &url); } break; case GOOGLE_PAGE_CLASSIFICATION: if (search_terms_args.page_classification != metrics::OmniboxEventProto::INVALID_SPEC) { HandleReplacement( "pgcl", base::IntToString(search_terms_args.page_classification), *i, &url); } break; case GOOGLE_PREFETCH_QUERY: { const std::string& query = search_terms_args.prefetch_query; const std::string& type = search_terms_args.prefetch_query_type; if (!query.empty() && !type.empty()) { HandleReplacement( std::string(), "pfq=" + query + "&qha=" + type + "&", *i, &url); } break; } case GOOGLE_RLZ: { DCHECK(!i->is_post_param); // On platforms that don't have RLZ, we still want this branch // to happen so that we replace the RLZ template with the // empty string. (If we don't handle this case, we hit a // NOTREACHED below.) base::string16 rlz_string = search_terms_data.GetRlzParameterValue( search_terms_args.from_app_list); if (!rlz_string.empty()) { HandleReplacement("rlz", base::UTF16ToUTF8(rlz_string), *i, &url); } break; } case GOOGLE_SEARCH_CLIENT: { DCHECK(!i->is_post_param); std::string client = search_terms_data.GetSearchClient(); if (!client.empty()) HandleReplacement("client", client, *i, &url); break; } case GOOGLE_SEARCH_FIELDTRIAL_GROUP: // We are not currently running any fieldtrials that modulate the search // url. If we do, then we'd have some conditional insert such as: // url.insert(i->index, used_www ? "gcx=w&" : "gcx=c&"); break; case GOOGLE_SEARCH_VERSION: HandleReplacement("gs_rn", "42", *i, &url); break; case GOOGLE_SESSION_TOKEN: { std::string token = search_terms_args.session_token; if (!token.empty()) HandleReplacement("psi", token, *i, &url); break; } case GOOGLE_SUGGEST_CLIENT: HandleReplacement( std::string(), search_terms_data.GetSuggestClient(), *i, &url); break; case GOOGLE_SUGGEST_REQUEST_ID: HandleReplacement( std::string(), search_terms_data.GetSuggestRequestIdentifier(), *i, &url); break; case GOOGLE_UNESCAPED_SEARCH_TERMS: { std::string unescaped_terms; base::UTF16ToCodepage(search_terms_args.search_terms, input_encoding.c_str(), base::OnStringConversionError::SKIP, &unescaped_terms); HandleReplacement(std::string(), unescaped_terms, *i, &url); break; } case LANGUAGE: HandleReplacement( std::string(), search_terms_data.GetApplicationLocale(), *i, &url); break; case SEARCH_TERMS: HandleReplacement( std::string(), base::UTF16ToUTF8(encoded_terms), *i, &url); break; case GOOGLE_IMAGE_THUMBNAIL: HandleReplacement( std::string(), search_terms_args.image_thumbnail_content, *i, &url); post_params_[i->index].content_type = "image/jpeg"; break; case GOOGLE_IMAGE_URL: if (search_terms_args.image_url.is_valid()) { HandleReplacement( std::string(), search_terms_args.image_url.spec(), *i, &url); } break; case GOOGLE_IMAGE_ORIGINAL_WIDTH: if (!search_terms_args.image_original_size.IsEmpty()) { HandleReplacement( std::string(), base::IntToString(search_terms_args.image_original_size.width()), *i, &url); } break; case GOOGLE_IMAGE_ORIGINAL_HEIGHT: if (!search_terms_args.image_original_size.IsEmpty()) { HandleReplacement( std::string(), base::IntToString(search_terms_args.image_original_size.height()), *i, &url); } break; case GOOGLE_IMAGE_SEARCH_SOURCE: HandleReplacement( std::string(), search_terms_data.GoogleImageSearchSource(), *i, &url); break; case GOOGLE_IOS_SEARCH_LANGUAGE: #if defined(OS_IOS) HandleReplacement("hl", search_terms_data.GetApplicationLocale(), *i, &url); #endif break; default: NOTREACHED(); break; } } if (!post_params_.empty()) EncodeFormData(post_params_, post_content); return url; } // TemplateURL ---------------------------------------------------------------- TemplateURL::AssociatedExtensionInfo::AssociatedExtensionInfo( const std::string& extension_id) : extension_id(extension_id), wants_to_be_default_engine(false) {} TemplateURL::AssociatedExtensionInfo::~AssociatedExtensionInfo() { } TemplateURL::TemplateURL(const TemplateURLData& data, Type type) : data_(data), url_ref_(nullptr), suggestions_url_ref_(this, TemplateURLRef::SUGGEST), instant_url_ref_(this, TemplateURLRef::INSTANT), image_url_ref_(this, TemplateURLRef::IMAGE), new_tab_url_ref_(this, TemplateURLRef::NEW_TAB), contextual_search_url_ref_(this, TemplateURLRef::CONTEXTUAL_SEARCH), type_(type), engine_type_(SEARCH_ENGINE_UNKNOWN) { ResizeURLRefVector(); SetPrepopulateId(data_.prepopulate_id); if (data_.search_terms_replacement_key == "{google:instantExtendedEnabledKey}") { data_.search_terms_replacement_key = google_util::kInstantExtendedAPIParam; } } TemplateURL::~TemplateURL() { } // static base::string16 TemplateURL::GenerateKeyword(const GURL& url) { DCHECK(url.is_valid()); // Strip "www." off the front of the keyword; otherwise the keyword won't work // properly. See http://code.google.com/p/chromium/issues/detail?id=6984 . // |url|'s hostname may be IDN-encoded. Before generating |keyword| from it, // convert to Unicode, so it won't look like a confusing punycode string. base::string16 keyword = url_formatter::StripWWW( url_formatter::IDNToUnicode(url.host())); // Special case: if the host was exactly "www." (not sure this can happen but // perhaps with some weird intranet and custom DNS server?), ensure we at // least don't return the empty string. return keyword.empty() ? base::ASCIIToUTF16("www") : keyword; } // static GURL TemplateURL::GenerateFaviconURL(const GURL& url) { DCHECK(url.is_valid()); GURL::Replacements rep; const char favicon_path[] = "/favicon.ico"; int favicon_path_len = arraysize(favicon_path) - 1; rep.SetPath(favicon_path, url::Component(0, favicon_path_len)); rep.ClearUsername(); rep.ClearPassword(); rep.ClearQuery(); rep.ClearRef(); return url.ReplaceComponents(rep); } // static bool TemplateURL::MatchesData(const TemplateURL* t_url, const TemplateURLData* data, const SearchTermsData& search_terms_data) { if (!t_url || !data) return !t_url && !data; return (t_url->short_name() == data->short_name()) && t_url->HasSameKeywordAs(*data, search_terms_data) && (t_url->url() == data->url()) && (t_url->suggestions_url() == data->suggestions_url) && (t_url->instant_url() == data->instant_url) && (t_url->image_url() == data->image_url) && (t_url->new_tab_url() == data->new_tab_url) && (t_url->search_url_post_params() == data->search_url_post_params) && (t_url->suggestions_url_post_params() == data->suggestions_url_post_params) && (t_url->instant_url_post_params() == data->instant_url_post_params) && (t_url->image_url_post_params() == data->image_url_post_params) && (t_url->favicon_url() == data->favicon_url) && (t_url->safe_for_autoreplace() == data->safe_for_autoreplace) && (t_url->show_in_default_list() == data->show_in_default_list) && (t_url->input_encodings() == data->input_encodings) && (t_url->alternate_urls() == data->alternate_urls) && (t_url->search_terms_replacement_key() == data->search_terms_replacement_key); } base::string16 TemplateURL::AdjustedShortNameForLocaleDirection() const { base::string16 bidi_safe_short_name = data_.short_name(); base::i18n::AdjustStringForLocaleDirection(&bidi_safe_short_name); return bidi_safe_short_name; } bool TemplateURL::ShowInDefaultList( const SearchTermsData& search_terms_data) const { return data_.show_in_default_list && url_ref_->SupportsReplacement(search_terms_data); } bool TemplateURL::SupportsReplacement( const SearchTermsData& search_terms_data) const { return url_ref_->SupportsReplacement(search_terms_data); } bool TemplateURL::HasGoogleBaseURLs( const SearchTermsData& search_terms_data) const { for (const TemplateURLRef& ref : url_refs_) { if (ref.HasGoogleBaseURLs(search_terms_data)) return true; } return suggestions_url_ref_.HasGoogleBaseURLs(search_terms_data) || instant_url_ref_.HasGoogleBaseURLs(search_terms_data) || image_url_ref_.HasGoogleBaseURLs(search_terms_data) || new_tab_url_ref_.HasGoogleBaseURLs(search_terms_data) || contextual_search_url_ref_.HasGoogleBaseURLs(search_terms_data); } bool TemplateURL::IsGoogleSearchURLWithReplaceableKeyword( const SearchTermsData& search_terms_data) const { return (type_ == NORMAL) && url_ref_->HasGoogleBaseURLs(search_terms_data) && google_util::IsGoogleHostname(base::UTF16ToUTF8(data_.keyword()), google_util::DISALLOW_SUBDOMAIN); } bool TemplateURL::HasSameKeywordAs( const TemplateURLData& other, const SearchTermsData& search_terms_data) const { return (data_.keyword() == other.keyword()) || (IsGoogleSearchURLWithReplaceableKeyword(search_terms_data) && TemplateURL(other).IsGoogleSearchURLWithReplaceableKeyword( search_terms_data)); } std::string TemplateURL::GetExtensionId() const { DCHECK(extension_info_); return extension_info_->extension_id; } SearchEngineType TemplateURL::GetEngineType( const SearchTermsData& search_terms_data) const { if (engine_type_ == SEARCH_ENGINE_UNKNOWN) { const GURL url = GenerateSearchURL(search_terms_data); engine_type_ = url.is_valid() ? TemplateURLPrepopulateData::GetEngineType(url) : SEARCH_ENGINE_OTHER; DCHECK_NE(SEARCH_ENGINE_UNKNOWN, engine_type_); } return engine_type_; } bool TemplateURL::ExtractSearchTermsFromURL( const GURL& url, const SearchTermsData& search_terms_data, base::string16* search_terms) const { return FindSearchTermsInURL(url, search_terms_data, search_terms, NULL, NULL); } bool TemplateURL::IsSearchURL(const GURL& url, const SearchTermsData& search_terms_data) const { base::string16 search_terms; return ExtractSearchTermsFromURL(url, search_terms_data, &search_terms) && !search_terms.empty(); } bool TemplateURL::HasSearchTermsReplacementKey(const GURL& url) const { // Look for the key both in the query and the ref. std::string params[] = {url.query(), url.ref()}; for (int i = 0; i < 2; ++i) { url::Component query, key, value; query.len = static_cast(params[i].size()); while (url::ExtractQueryKeyValue(params[i].c_str(), &query, &key, &value)) { if (key.is_nonempty() && params[i].substr(key.begin, key.len) == search_terms_replacement_key()) { return true; } } } return false; } bool TemplateURL::ReplaceSearchTermsInURL( const GURL& url, const TemplateURLRef::SearchTermsArgs& search_terms_args, const SearchTermsData& search_terms_data, GURL* result) { // TODO(beaudoin): Use AQS from |search_terms_args| too. url::Parsed::ComponentType search_term_component; url::Component search_terms_position; base::string16 search_terms; if (!FindSearchTermsInURL(url, search_terms_data, &search_terms, &search_term_component, &search_terms_position)) { return false; } DCHECK(search_terms_position.is_nonempty()); // Query and ref are encoded in the same way. const bool is_in_query = (search_term_component != url::Parsed::PATH); std::string input_encoding; base::string16 encoded_terms; base::string16 encoded_original_query; EncodeSearchTerms(search_terms_args, is_in_query, &input_encoding, &encoded_terms, &encoded_original_query); std::string old_params; if (search_term_component == url::Parsed::QUERY) { old_params = url.query(); } else if (search_term_component == url::Parsed::REF) { old_params = url.ref(); } else { DCHECK_EQ(search_term_component, url::Parsed::PATH); old_params = url.path(); } std::string new_params(old_params, 0, search_terms_position.begin); new_params += base::UTF16ToUTF8(encoded_terms); new_params += old_params.substr(search_terms_position.end()); GURL::Replacements replacements; if (search_term_component == url::Parsed::QUERY) { replacements.SetQueryStr(new_params); } else if (search_term_component == url::Parsed::REF) { replacements.SetRefStr(new_params); } else { DCHECK_EQ(search_term_component, url::Parsed::PATH); replacements.SetPathStr(new_params); } *result = url.ReplaceComponents(replacements); return true; } void TemplateURL::EncodeSearchTerms( const TemplateURLRef::SearchTermsArgs& search_terms_args, bool is_in_query, std::string* input_encoding, base::string16* encoded_terms, base::string16* encoded_original_query) const { std::vector encodings(input_encodings()); if (std::find(encodings.begin(), encodings.end(), "UTF-8") == encodings.end()) encodings.push_back("UTF-8"); for (std::vector::const_iterator i(encodings.begin()); i != encodings.end(); ++i) { if (TryEncoding(search_terms_args.search_terms, search_terms_args.original_query, i->c_str(), is_in_query, encoded_terms, encoded_original_query)) { *input_encoding = *i; return; } } NOTREACHED(); } GURL TemplateURL::GenerateSearchURL( const SearchTermsData& search_terms_data) const { if (!url_ref_->IsValid(search_terms_data)) return GURL(); if (!url_ref_->SupportsReplacement(search_terms_data)) return GURL(url()); // Use something obscure for the search terms argument so that in the rare // case the term replaces the URL it's unlikely another keyword would have the // same url. // TODO(jnd): Add additional parameters to get post data when the search URL // has post parameters. return GURL(url_ref_->ReplaceSearchTerms( TemplateURLRef::SearchTermsArgs( base::ASCIIToUTF16("blah.blah.blah.blah.blah")), search_terms_data, NULL)); } void TemplateURL::CopyFrom(const TemplateURL& other) { if (this == &other) return; data_ = other.data_; ResizeURLRefVector(); InvalidateCachedValues(); SetPrepopulateId(other.data_.prepopulate_id); } void TemplateURL::SetURL(const std::string& url) { data_.SetURL(url); engine_type_ = SEARCH_ENGINE_UNKNOWN; url_ref_->InvalidateCachedValues(); } void TemplateURL::SetPrepopulateId(int id) { data_.prepopulate_id = id; const bool prepopulated = id > 0; for (TemplateURLRef& ref : url_refs_) ref.prepopulated_ = prepopulated; suggestions_url_ref_.prepopulated_ = prepopulated; instant_url_ref_.prepopulated_ = prepopulated; image_url_ref_.prepopulated_ = prepopulated; new_tab_url_ref_.prepopulated_ = prepopulated; contextual_search_url_ref_.prepopulated_ = prepopulated; } void TemplateURL::ResetKeywordIfNecessary( const SearchTermsData& search_terms_data, bool force) { if (IsGoogleSearchURLWithReplaceableKeyword(search_terms_data) || force) { DCHECK_NE(OMNIBOX_API_EXTENSION, type_); GURL url(GenerateSearchURL(search_terms_data)); if (url.is_valid()) data_.SetKeyword(GenerateKeyword(url)); } } void TemplateURL::InvalidateCachedValues() const { for (const TemplateURLRef& ref : url_refs_) ref.InvalidateCachedValues(); suggestions_url_ref_.InvalidateCachedValues(); instant_url_ref_.InvalidateCachedValues(); image_url_ref_.InvalidateCachedValues(); new_tab_url_ref_.InvalidateCachedValues(); contextual_search_url_ref_.InvalidateCachedValues(); } void TemplateURL::ResizeURLRefVector() { const size_t new_size = data_.alternate_urls.size() + 1; if (url_refs_.size() == new_size) return; // See comment on TemplateURL::ExtractSearchTermsFromURL() for understanding // the order of TemplateURLRefs in the |url_refs_| vector. url_refs_.clear(); url_refs_.reserve(new_size); for (size_t i = 0; i != data_.alternate_urls.size(); ++i) url_refs_.emplace_back(this, i); url_refs_.emplace_back(this, TemplateURLRef::SEARCH); url_ref_ = &url_refs_.back(); } bool TemplateURL::FindSearchTermsInURL( const GURL& url, const SearchTermsData& search_terms_data, base::string16* search_terms, url::Parsed::ComponentType* search_term_component, url::Component* search_terms_position) const { DCHECK(search_terms); search_terms->clear(); // Try to match with every pattern. for (const TemplateURLRef& ref : url_refs_) { if (ref.ExtractSearchTermsFromURL(url, search_terms, search_terms_data, search_term_component, search_terms_position)) { // If ExtractSearchTermsFromURL() returns true and |search_terms| is empty // it means the pattern matched but no search terms were present. In this // case we fail immediately without looking for matches in subsequent // patterns. This means that given patterns // [ "http://foo/#q={searchTerms}", "http://foo/?q={searchTerms}" ], // calling ExtractSearchTermsFromURL() on "http://foo/?q=bar#q=' would // return false. This is important for at least Google, where such URLs // are invalid. return !search_terms->empty(); } } return false; }