/** * @file llcommandhandler.h * @brief Central registry for text-driven "commands", most of * which manipulate user interface. For example, the command * "agent (uuid) about" will open the UI for an avatar's profile. * * $LicenseInfo:firstyear=2007&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LLCOMMANDHANDLER_H #define LLCOMMANDHANDLER_H #include "llsd.h" /* Example: secondlife:///app/foo/<uuid> Command "foo" that takes one parameter, a UUID. class LLFooHandler : public LLCommandHandler { public: // Inform the system you handle commands starting // with "foo" and they are only allowed from // "trusted" (pointed at Linden content) browsers LLFooHandler() : LLCommandHandler("foo", UNTRUSTED_BLOCK) { } // Your code here bool handle(const LLSD& tokens, const LLSD& query_map, const std::string& grid, LLMediaCtrl* web) { if (tokens.size() < 1) return false; LLUUID id( tokens[0] ); return do_foo(id); } }; // *NOTE: Creating the object registers with the dispatcher. LLFooHandler gFooHandler; */ class LLMediaCtrl; class LLCommandHandler { public: enum EUntrustedAccess { UNTRUSTED_ALLOW, // allow commands from untrusted browsers UNTRUSTED_BLOCK, // ignore commands from untrusted browsers UNTRUSTED_CLICK_ONLY, // allow untrusted, but only if clicked UNTRUSTED_THROTTLE // allow untrusted, but only a few per min. }; static const std::string NAV_TYPE_CLICKED; static const std::string NAV_TYPE_EXTERNAL; static const std::string NAV_TYPE_NAVIGATED; LLCommandHandler(const char* command, EUntrustedAccess untrusted_access); // Automatically registers object to get called when // command is executed. All commands can be processed // in links from LLMediaCtrl, but some (like teleport) // should not be allowed from outside the app. virtual ~LLCommandHandler(); virtual bool canHandleUntrusted( const LLSD& params, const LLSD& query_map, LLMediaCtrl* web, const std::string& nav_type) { return true; } virtual bool handle(const LLSD& params, const LLSD& query_map, const std::string& grid, LLMediaCtrl* web) = 0; // For URL secondlife:///app/foo/bar/baz?cat=1&dog=2 // @params - array of "bar", "baz", possibly empty // @query_map - map of "cat" -> 1, "dog" -> 2, possibly empty // @web - pointer to web browser control, possibly NULL // Return true if you did something, false if the parameters // are invalid or on error. }; class LLCommandDispatcher { public: static bool dispatch(const std::string& cmd, const LLSD& params, const LLSD& query_map, const std::string& grid, LLMediaCtrl* web, const std::string& nav_type, bool trusted_browser); // Execute a command registered via the above mechanism, // passing string parameters. // Returns true if command was found and executed correctly. /// Return an LLSD::Map of registered LLCommandHandlers and associated /// info (e.g. EUntrustedAccess). static LLSD enumerate(); }; #endif