| // Copyright (c) 2012 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 "chrome/browser/drive/drive_api_util.h" |
| |
| #include <string> |
| |
| #include "base/files/file.h" |
| #include "base/logging.h" |
| #include "base/md5.h" |
| #include "base/strings/string16.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/values.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "google_apis/drive/drive_api_parser.h" |
| #include "google_apis/drive/gdata_wapi_parser.h" |
| #include "net/base/escape.h" |
| #include "third_party/re2/re2/re2.h" |
| #include "url/gurl.h" |
| |
| namespace drive { |
| namespace util { |
| namespace { |
| |
| std::string GetMimeTypeFromEntryKind(google_apis::DriveEntryKind kind) { |
| switch (kind) { |
| case google_apis::ENTRY_KIND_DOCUMENT: |
| return kGoogleDocumentMimeType; |
| case google_apis::ENTRY_KIND_SPREADSHEET: |
| return kGoogleSpreadsheetMimeType; |
| case google_apis::ENTRY_KIND_PRESENTATION: |
| return kGooglePresentationMimeType; |
| case google_apis::ENTRY_KIND_DRAWING: |
| return kGoogleDrawingMimeType; |
| case google_apis::ENTRY_KIND_TABLE: |
| return kGoogleTableMimeType; |
| case google_apis::ENTRY_KIND_FORM: |
| return kGoogleFormMimeType; |
| default: |
| return std::string(); |
| } |
| } |
| |
| // Returns the argument string. |
| std::string Identity(const std::string& resource_id) { return resource_id; } |
| |
| } // namespace |
| |
| |
| std::string EscapeQueryStringValue(const std::string& str) { |
| std::string result; |
| result.reserve(str.size()); |
| for (size_t i = 0; i < str.size(); ++i) { |
| if (str[i] == '\\' || str[i] == '\'') { |
| result.push_back('\\'); |
| } |
| result.push_back(str[i]); |
| } |
| return result; |
| } |
| |
| std::string TranslateQuery(const std::string& original_query) { |
| // In order to handle non-ascii white spaces correctly, convert to UTF16. |
| base::string16 query = base::UTF8ToUTF16(original_query); |
| const base::string16 kDelimiter( |
| base::kWhitespaceUTF16 + base::ASCIIToUTF16("\"")); |
| |
| std::string result; |
| for (size_t index = query.find_first_not_of(base::kWhitespaceUTF16); |
| index != base::string16::npos; |
| index = query.find_first_not_of(base::kWhitespaceUTF16, index)) { |
| bool is_exclusion = (query[index] == '-'); |
| if (is_exclusion) |
| ++index; |
| if (index == query.length()) { |
| // Here, the token is '-' and it should be ignored. |
| continue; |
| } |
| |
| size_t begin_token = index; |
| base::string16 token; |
| if (query[begin_token] == '"') { |
| // Quoted query. |
| ++begin_token; |
| size_t end_token = query.find('"', begin_token); |
| if (end_token == base::string16::npos) { |
| // This is kind of syntax error, since quoted string isn't finished. |
| // However, the query is built by user manually, so here we treat |
| // whole remaining string as a token as a fallback, by appending |
| // a missing double-quote character. |
| end_token = query.length(); |
| query.push_back('"'); |
| } |
| |
| token = query.substr(begin_token, end_token - begin_token); |
| index = end_token + 1; // Consume last '"', too. |
| } else { |
| size_t end_token = query.find_first_of(kDelimiter, begin_token); |
| if (end_token == base::string16::npos) { |
| end_token = query.length(); |
| } |
| |
| token = query.substr(begin_token, end_token - begin_token); |
| index = end_token; |
| } |
| |
| if (token.empty()) { |
| // Just ignore an empty token. |
| continue; |
| } |
| |
| if (!result.empty()) { |
| // If there are two or more tokens, need to connect with "and". |
| result.append(" and "); |
| } |
| |
| // The meaning of "fullText" should include title, description and content. |
| base::StringAppendF( |
| &result, |
| "%sfullText contains \'%s\'", |
| is_exclusion ? "not " : "", |
| EscapeQueryStringValue(base::UTF16ToUTF8(token)).c_str()); |
| } |
| |
| return result; |
| } |
| |
| std::string ExtractResourceIdFromUrl(const GURL& url) { |
| return net::UnescapeURLComponent(url.ExtractFileName(), |
| net::UnescapeRule::URL_SPECIAL_CHARS); |
| } |
| |
| std::string CanonicalizeResourceId(const std::string& resource_id) { |
| // If resource ID is in the old WAPI format starting with a prefix like |
| // "document:", strip it and return the remaining part. |
| std::string stripped_resource_id; |
| if (RE2::FullMatch(resource_id, "^[a-z-]+(?::|%3A)([\\w-]+)$", |
| &stripped_resource_id)) |
| return stripped_resource_id; |
| return resource_id; |
| } |
| |
| ResourceIdCanonicalizer GetIdentityResourceIdCanonicalizer() { |
| return base::Bind(&Identity); |
| } |
| |
| const char kDocsListScope[] = "https://docs.google.com/feeds/"; |
| const char kDriveAppsScope[] = "https://www.googleapis.com/auth/drive.apps"; |
| |
| void ParseShareUrlAndRun(const google_apis::GetShareUrlCallback& callback, |
| google_apis::GDataErrorCode error, |
| scoped_ptr<base::Value> value) { |
| DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); |
| |
| if (!value) { |
| callback.Run(error, GURL()); |
| return; |
| } |
| |
| // Parsing ResourceEntry is cheap enough to do on UI thread. |
| scoped_ptr<google_apis::ResourceEntry> entry = |
| google_apis::ResourceEntry::ExtractAndParse(*value); |
| if (!entry) { |
| callback.Run(google_apis::GDATA_PARSE_ERROR, GURL()); |
| return; |
| } |
| |
| const google_apis::Link* share_link = |
| entry->GetLinkByType(google_apis::Link::LINK_SHARE); |
| callback.Run(error, share_link ? share_link->href() : GURL()); |
| } |
| |
| scoped_ptr<google_apis::FileResource> ConvertResourceEntryToFileResource( |
| const google_apis::ResourceEntry& entry) { |
| scoped_ptr<google_apis::FileResource> file(new google_apis::FileResource); |
| |
| file->set_file_id(entry.resource_id()); |
| file->set_title(entry.title()); |
| file->set_created_date(entry.published_time()); |
| |
| if (std::find(entry.labels().begin(), entry.labels().end(), |
| "shared-with-me") != entry.labels().end()) { |
| // Set current time to mark the file is shared_with_me, since ResourceEntry |
| // doesn't have |shared_with_me_date| equivalent. |
| file->set_shared_with_me_date(base::Time::Now()); |
| } |
| |
| file->set_shared(std::find(entry.labels().begin(), entry.labels().end(), |
| "shared") != entry.labels().end()); |
| |
| if (entry.is_folder()) { |
| file->set_mime_type(kDriveFolderMimeType); |
| } else { |
| std::string mime_type = GetMimeTypeFromEntryKind(entry.kind()); |
| if (mime_type.empty()) |
| mime_type = entry.content_mime_type(); |
| file->set_mime_type(mime_type); |
| } |
| |
| file->set_md5_checksum(entry.file_md5()); |
| file->set_file_size(entry.file_size()); |
| |
| file->mutable_labels()->set_trashed(entry.deleted()); |
| file->set_etag(entry.etag()); |
| |
| google_apis::ImageMediaMetadata* image_media_metadata = |
| file->mutable_image_media_metadata(); |
| image_media_metadata->set_width(entry.image_width()); |
| image_media_metadata->set_height(entry.image_height()); |
| image_media_metadata->set_rotation(entry.image_rotation()); |
| |
| std::vector<google_apis::ParentReference>* parents = file->mutable_parents(); |
| for (size_t i = 0; i < entry.links().size(); ++i) { |
| using google_apis::Link; |
| const Link& link = *entry.links()[i]; |
| switch (link.type()) { |
| case Link::LINK_PARENT: { |
| google_apis::ParentReference parent; |
| parent.set_parent_link(link.href()); |
| |
| std::string file_id = |
| drive::util::ExtractResourceIdFromUrl(link.href()); |
| parent.set_file_id(file_id); |
| parents->push_back(parent); |
| break; |
| } |
| case Link::LINK_ALTERNATE: |
| file->set_alternate_link(link.href()); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| file->set_modified_date(entry.updated_time()); |
| file->set_last_viewed_by_me_date(entry.last_viewed_time()); |
| |
| return file.Pass(); |
| } |
| |
| google_apis::DriveEntryKind GetKind( |
| const google_apis::FileResource& file_resource) { |
| if (file_resource.IsDirectory()) |
| return google_apis::ENTRY_KIND_FOLDER; |
| |
| const std::string& mime_type = file_resource.mime_type(); |
| if (mime_type == kGoogleDocumentMimeType) |
| return google_apis::ENTRY_KIND_DOCUMENT; |
| if (mime_type == kGoogleSpreadsheetMimeType) |
| return google_apis::ENTRY_KIND_SPREADSHEET; |
| if (mime_type == kGooglePresentationMimeType) |
| return google_apis::ENTRY_KIND_PRESENTATION; |
| if (mime_type == kGoogleDrawingMimeType) |
| return google_apis::ENTRY_KIND_DRAWING; |
| if (mime_type == kGoogleTableMimeType) |
| return google_apis::ENTRY_KIND_TABLE; |
| if (mime_type == kGoogleFormMimeType) |
| return google_apis::ENTRY_KIND_FORM; |
| if (mime_type == "application/pdf") |
| return google_apis::ENTRY_KIND_PDF; |
| return google_apis::ENTRY_KIND_FILE; |
| } |
| |
| scoped_ptr<google_apis::ResourceEntry> |
| ConvertFileResourceToResourceEntry( |
| const google_apis::FileResource& file_resource) { |
| scoped_ptr<google_apis::ResourceEntry> entry(new google_apis::ResourceEntry); |
| |
| // ResourceEntry |
| entry->set_resource_id(file_resource.file_id()); |
| entry->set_id(file_resource.file_id()); |
| entry->set_kind(GetKind(file_resource)); |
| entry->set_title(file_resource.title()); |
| entry->set_published_time(file_resource.created_date()); |
| |
| std::vector<std::string> labels; |
| if (!file_resource.shared_with_me_date().is_null()) |
| labels.push_back("shared-with-me"); |
| if (file_resource.shared()) |
| labels.push_back("shared"); |
| entry->set_labels(labels); |
| |
| // This should be the url to download the file_resource. |
| { |
| google_apis::Content content; |
| content.set_mime_type(file_resource.mime_type()); |
| entry->set_content(content); |
| } |
| // TODO(kochi): entry->resource_links_ |
| |
| // For file entries |
| entry->set_filename(file_resource.title()); |
| entry->set_suggested_filename(file_resource.title()); |
| entry->set_file_md5(file_resource.md5_checksum()); |
| entry->set_file_size(file_resource.file_size()); |
| |
| // If file is removed completely, that information is only available in |
| // ChangeResource, and is reflected in |removed_|. If file is trashed, the |
| // file entry still exists but with its "trashed" label true. |
| entry->set_deleted(file_resource.labels().is_trashed()); |
| |
| // ImageMediaMetadata |
| entry->set_image_width(file_resource.image_media_metadata().width()); |
| entry->set_image_height(file_resource.image_media_metadata().height()); |
| entry->set_image_rotation(file_resource.image_media_metadata().rotation()); |
| |
| // CommonMetadata |
| entry->set_etag(file_resource.etag()); |
| // entry->authors_ |
| // entry->links_. |
| ScopedVector<google_apis::Link> links; |
| for (size_t i = 0; i < file_resource.parents().size(); ++i) { |
| google_apis::Link* link = new google_apis::Link; |
| link->set_type(google_apis::Link::LINK_PARENT); |
| link->set_href(file_resource.parents()[i].parent_link()); |
| links.push_back(link); |
| } |
| if (!file_resource.alternate_link().is_empty()) { |
| google_apis::Link* link = new google_apis::Link; |
| link->set_type(google_apis::Link::LINK_ALTERNATE); |
| link->set_href(file_resource.alternate_link()); |
| links.push_back(link); |
| } |
| entry->set_links(links.Pass()); |
| |
| // entry->categories_ |
| entry->set_updated_time(file_resource.modified_date()); |
| entry->set_last_viewed_time(file_resource.last_viewed_by_me_date()); |
| |
| entry->FillRemainingFields(); |
| return entry.Pass(); |
| } |
| |
| scoped_ptr<google_apis::ResourceEntry> |
| ConvertChangeResourceToResourceEntry( |
| const google_apis::ChangeResource& change_resource) { |
| scoped_ptr<google_apis::ResourceEntry> entry; |
| if (change_resource.file()) |
| entry = ConvertFileResourceToResourceEntry(*change_resource.file()).Pass(); |
| else |
| entry.reset(new google_apis::ResourceEntry); |
| |
| entry->set_resource_id(change_resource.file_id()); |
| // If |is_deleted()| returns true, the file is removed from Drive. |
| entry->set_removed(change_resource.is_deleted()); |
| entry->set_changestamp(change_resource.change_id()); |
| entry->set_modification_date(change_resource.modification_date()); |
| |
| return entry.Pass(); |
| } |
| |
| scoped_ptr<google_apis::ResourceList> |
| ConvertFileListToResourceList(const google_apis::FileList& file_list) { |
| scoped_ptr<google_apis::ResourceList> feed(new google_apis::ResourceList); |
| |
| const ScopedVector<google_apis::FileResource>& items = file_list.items(); |
| ScopedVector<google_apis::ResourceEntry> entries; |
| for (size_t i = 0; i < items.size(); ++i) |
| entries.push_back(ConvertFileResourceToResourceEntry(*items[i]).release()); |
| feed->set_entries(entries.Pass()); |
| |
| ScopedVector<google_apis::Link> links; |
| if (!file_list.next_link().is_empty()) { |
| google_apis::Link* link = new google_apis::Link; |
| link->set_type(google_apis::Link::LINK_NEXT); |
| link->set_href(file_list.next_link()); |
| links.push_back(link); |
| } |
| feed->set_links(links.Pass()); |
| |
| return feed.Pass(); |
| } |
| |
| scoped_ptr<google_apis::ResourceList> |
| ConvertChangeListToResourceList(const google_apis::ChangeList& change_list) { |
| scoped_ptr<google_apis::ResourceList> feed(new google_apis::ResourceList); |
| |
| const ScopedVector<google_apis::ChangeResource>& items = change_list.items(); |
| ScopedVector<google_apis::ResourceEntry> entries; |
| for (size_t i = 0; i < items.size(); ++i) { |
| entries.push_back( |
| ConvertChangeResourceToResourceEntry(*items[i]).release()); |
| } |
| feed->set_entries(entries.Pass()); |
| |
| feed->set_largest_changestamp(change_list.largest_change_id()); |
| |
| ScopedVector<google_apis::Link> links; |
| if (!change_list.next_link().is_empty()) { |
| google_apis::Link* link = new google_apis::Link; |
| link->set_type(google_apis::Link::LINK_NEXT); |
| link->set_href(change_list.next_link()); |
| links.push_back(link); |
| } |
| feed->set_links(links.Pass()); |
| |
| return feed.Pass(); |
| } |
| |
| std::string GetMd5Digest(const base::FilePath& file_path) { |
| const int kBufferSize = 512 * 1024; // 512kB. |
| |
| base::File file(file_path, base::File::FLAG_OPEN | base::File::FLAG_READ); |
| if (!file.IsValid()) |
| return std::string(); |
| |
| base::MD5Context context; |
| base::MD5Init(&context); |
| |
| int64 offset = 0; |
| scoped_ptr<char[]> buffer(new char[kBufferSize]); |
| while (true) { |
| int result = file.Read(offset, buffer.get(), kBufferSize); |
| if (result < 0) { |
| // Found an error. |
| return std::string(); |
| } |
| |
| if (result == 0) { |
| // End of file. |
| break; |
| } |
| |
| offset += result; |
| base::MD5Update(&context, base::StringPiece(buffer.get(), result)); |
| } |
| |
| base::MD5Digest digest; |
| base::MD5Final(&digest, &context); |
| return MD5DigestToBase16(digest); |
| } |
| |
| const char kWapiRootDirectoryResourceId[] = "folder:root"; |
| |
| } // namespace util |
| } // namespace drive |