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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+%{C++
+#include "Entries.h"
+#include "LookupCache.h"
+class nsUrlClassifierLookupResult;
+%}
+[ptr] native ResultArray(nsTArray<mozilla::safebrowsing::LookupResult>);
+[ptr] native CacheCompletionArray(nsTArray<mozilla::safebrowsing::CacheResult>);
+[ptr] native PrefixArray(mozilla::safebrowsing::PrefixArray);
+
+interface nsIUrlClassifierHashCompleter;
+interface nsIPrincipal;
+
+// Interface for JS function callbacks
+[scriptable, function, uuid(4ca27b6b-a674-4b3d-ab30-d21e2da2dffb)]
+interface nsIUrlClassifierCallback : nsISupports {
+ void handleEvent(in ACString value);
+};
+
+/**
+ * The nsIUrlClassifierUpdateObserver interface is implemented by
+ * clients streaming updates to the url-classifier (usually
+ * nsUrlClassifierStreamUpdater.
+ */
+[scriptable, uuid(9fa11561-5816-4e1b-bcc9-b629ca05cce6)]
+interface nsIUrlClassifierUpdateObserver : nsISupports {
+ /**
+ * The update requested a new URL whose contents should be downloaded
+ * and sent to the classifier as a new stream.
+ *
+ * @param url The url that was requested.
+ * @param table The table name that this URL's contents will be associated
+ * with. This should be passed back to beginStream().
+ */
+ void updateUrlRequested(in ACString url,
+ in ACString table);
+
+ /**
+ * A stream update has completed.
+ *
+ * @param status The state of the update process.
+ * @param delay The amount of time the updater should wait to fetch the
+ * next URL in ms.
+ */
+ void streamFinished(in nsresult status, in unsigned long delay);
+
+ /* The update has encountered an error and should be cancelled */
+ void updateError(in nsresult error);
+
+ /**
+ * The update has completed successfully.
+ *
+ * @param requestedTimeout The number of seconds that the caller should
+ * wait before trying to update again.
+ **/
+ void updateSuccess(in unsigned long requestedTimeout);
+};
+
+/**
+ * This is a proxy class that is instantiated and called from the JS thread.
+ * It provides async methods for querying and updating the database. As the
+ * methods complete, they call the callback function.
+ */
+[scriptable, uuid(7a258022-6765-11e5-b379-b37b1f2354be)]
+interface nsIUrlClassifierDBService : nsISupports
+{
+ /**
+ * Looks up a URI in the specified tables.
+ *
+ * @param principal: The principal containing the URI to search.
+ * @param c: The callback will be called with a comma-separated list
+ * of tables to which the key belongs.
+ */
+ void lookup(in nsIPrincipal principal,
+ in ACString tables,
+ in nsIUrlClassifierCallback c);
+
+ /**
+ * Lists the tables along with their meta info in the following format:
+ *
+ * tablename;[metadata]\n
+ * tablename2;[metadata]\n
+ *
+ * For v2 tables, the metadata is the chunks info such as
+ *
+ * goog-phish-shavar;a:10,14,30-40s:56,67
+ * goog-unwanted-shavar;a:1-3,5
+ *
+ * For v4 tables, base64 encoded state is currently the only info in the
+ * metadata (can be extended whenever necessary). For exmaple,
+ *
+ * goog-phish-proto;Cg0IARAGGAEiAzAwMTABEKqTARoCGAjT1gDD:oCGAjT1gDD\n
+ * goog-malware-proto;Cg0IAhAGGAEiAzAwMTABENCQARoCGAjx5Yty:BENCQARoCGAj\n
+ *
+ * Note that the metadata is colon-separated.
+ *
+ */
+ void getTables(in nsIUrlClassifierCallback c);
+
+ /**
+ * Set the nsIUrlClassifierCompleter object for a given table. This
+ * object will be used to request complete versions of partial
+ * hashes.
+ */
+ void setHashCompleter(in ACString tableName,
+ in nsIUrlClassifierHashCompleter completer);
+
+ /**
+ * Set the last update time for the given table. We use this to
+ * remember freshness past restarts. Time is in milliseconds since epoch.
+ */
+ void setLastUpdateTime(in ACString tableName,
+ in unsigned long long lastUpdateTime);
+
+ /**
+ * Forget the results that were used in the last DB update.
+ */
+ void clearLastResults();
+
+ ////////////////////////////////////////////////////////////////////////////
+ // Incremental update methods.
+ //
+ // An update to the database has the following steps:
+ //
+ // 1) The update process is started with beginUpdate(). The client
+ // passes an nsIUrlClassifierUpdateObserver object which will be
+ // notified as the update is processed by the dbservice.
+ // 2) The client sends an initial update stream to the dbservice,
+ // using beginStream/updateStream/finishStream.
+ // 3) While reading this initial update stream, the dbservice may
+ // request additional streams from the client as requested by the
+ // update stream.
+ // 4) For each additional update stream, the client feeds the
+ // contents to the dbservice using beginStream/updateStream/endStream.
+ // 5) Once all streams have been processed, the client calls
+ // finishUpdate. When the dbservice has finished processing
+ // all streams, it will notify the observer that the update process
+ // is complete.
+
+ /**
+ * Begin an update process. Will throw NS_ERROR_NOT_AVAILABLE if there
+ * is already an update in progress.
+ *
+ * @param updater The update observer tied to this update.
+ * @param tables A comma-separated list of tables included in this update.
+ */
+ void beginUpdate(in nsIUrlClassifierUpdateObserver updater,
+ in ACString tables);
+
+ /**
+ * Begin a stream update. This should be called once per url being
+ * fetched.
+ *
+ * @param table The table the contents of this stream will be associated
+ * with, or empty for the initial stream.
+ */
+ void beginStream(in ACString table);
+
+ /**
+ * Update the table incrementally.
+ */
+ void updateStream(in ACString updateChunk);
+
+ // It would be nice to have an updateFromStream method to round out the
+ // interface, but it's tricky because of XPCOM proxies.
+
+ /**
+ * Finish an individual stream update. Must be called for every
+ * beginStream() call, before the next beginStream() or finishUpdate().
+ *
+ * The update observer's streamFinished will be called once the
+ * stream has been processed.
+ */
+ void finishStream();
+
+ /**
+ * Finish an incremental update. This will attempt to commit any
+ * pending changes and resets the update interface.
+ *
+ * The update observer's updateSucceeded or updateError methods
+ * will be called when the update has been processed.
+ */
+ void finishUpdate();
+
+ /**
+ * Cancel an incremental update. This rolls back any pending changes.
+ * and resets the update interface.
+ *
+ * The update observer's updateError method will be called when the
+ * update has been rolled back.
+ */
+ void cancelUpdate();
+
+ /**
+ * Reset the url-classifier database. This call will delete the existing
+ * database, emptying all tables. Mostly intended for use in unit tests.
+ */
+ void resetDatabase();
+
+ /**
+ * Reload he url-classifier database. This will empty all cache for
+ * completions from gethash, and reload it from database. Mostly intended
+ * for use in tests.
+ */
+ void reloadDatabase();
+};
+
+/**
+ * This is an internal helper interface for communication between the
+ * main thread and the dbservice worker thread. It is called for each
+ * lookup to provide a set of possible results, which the main thread
+ * may need to expand using an nsIUrlClassifierCompleter.
+ */
+[uuid(b903dc8f-dff1-42fe-894b-36e7a59bb801)]
+interface nsIUrlClassifierLookupCallback : nsISupports
+{
+ /**
+ * The lookup process is complete.
+ *
+ * @param results
+ * If this parameter is null, there were no results found.
+ * If not, it contains an array of nsUrlClassifierEntry objects
+ * with possible matches. The callee is responsible for freeing
+ * this array.
+ */
+ void lookupComplete(in ResultArray results);
+};