llappviewerlinux_api_dbus.cpp
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- /**
- * @file llappviewerlinux_api_dbus.cpp
- * @brief dynamic DBus symbol-grabbing code
- *
- * $LicenseInfo:firstyear=2008&license=viewergpl$
- *
- * Copyright (c) 2008-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #if LL_DBUS_ENABLED
- #include "linden_common.h"
- extern "C" {
- #include <dbus/dbus-glib.h>
- #include "apr_pools.h"
- #include "apr_dso.h"
- }
- #define DEBUGMSG(...) do { lldebugs << llformat(__VA_ARGS__) << llendl; } while(0)
- #define INFOMSG(...) do { llinfos << llformat(__VA_ARGS__) << llendl; } while(0)
- #define WARNMSG(...) do { llwarns << llformat(__VA_ARGS__) << llendl; } while(0)
- #define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) RTN (*ll##DBUSSYM)(__VA_ARGS__) = NULL
- #include "llappviewerlinux_api_dbus_syms_raw.inc"
- #undef LL_DBUS_SYM
- static bool sSymsGrabbed = false;
- static apr_pool_t *sSymDBUSDSOMemoryPool = NULL;
- static apr_dso_handle_t *sSymDBUSDSOHandleG = NULL;
- bool grab_dbus_syms(std::string dbus_dso_name)
- {
- if (sSymsGrabbed)
- {
- // already have grabbed good syms
- return TRUE;
- }
- bool sym_error = false;
- bool rtn = false;
- apr_status_t rv;
- apr_dso_handle_t *sSymDBUSDSOHandle = NULL;
- #define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) do{rv = apr_dso_sym((apr_dso_handle_sym_t*)&ll##DBUSSYM, sSymDBUSDSOHandle, #DBUSSYM); if (rv != APR_SUCCESS) {INFOMSG("Failed to grab symbol: %s", #DBUSSYM); if (REQUIRED) sym_error = true;} else DEBUGMSG("grabbed symbol: %s from %p", #DBUSSYM, (void*)ll##DBUSSYM);}while(0)
- //attempt to load the shared library
- apr_pool_create(&sSymDBUSDSOMemoryPool, NULL);
- if ( APR_SUCCESS == (rv = apr_dso_load(&sSymDBUSDSOHandle,
- dbus_dso_name.c_str(),
- sSymDBUSDSOMemoryPool) ))
- {
- INFOMSG("Found DSO: %s", dbus_dso_name.c_str());
- #include "llappviewerlinux_api_dbus_syms_raw.inc"
- if ( sSymDBUSDSOHandle )
- {
- sSymDBUSDSOHandleG = sSymDBUSDSOHandle;
- sSymDBUSDSOHandle = NULL;
- }
- rtn = !sym_error;
- }
- else
- {
- INFOMSG("Couldn't load DSO: %s", dbus_dso_name.c_str());
- rtn = false; // failure
- }
- if (sym_error)
- {
- WARNMSG("Failed to find necessary symbols in DBUS-GLIB libraries.");
- }
- #undef LL_DBUS_SYM
- sSymsGrabbed = rtn;
- return rtn;
- }
- void ungrab_dbus_syms()
- {
- // should be safe to call regardless of whether we've
- // actually grabbed syms.
- if ( sSymDBUSDSOHandleG )
- {
- apr_dso_unload(sSymDBUSDSOHandleG);
- sSymDBUSDSOHandleG = NULL;
- }
- if ( sSymDBUSDSOMemoryPool )
- {
- apr_pool_destroy(sSymDBUSDSOMemoryPool);
- sSymDBUSDSOMemoryPool = NULL;
- }
- // NULL-out all of the symbols we'd grabbed
- #define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) do{ll##DBUSSYM = NULL;}while(0)
- #include "llappviewerlinux_api_dbus_syms_raw.inc"
- #undef LL_DBUS_SYM
- sSymsGrabbed = false;
- }
- #endif // LL_DBUS_ENABLED