diff options
Diffstat (limited to 'addons/library.xbmc.addon')
| -rw-r--r-- | addons/library.xbmc.addon/dlfcn-win32.cpp | 263 | ||||
| -rw-r--r-- | addons/library.xbmc.addon/dlfcn-win32.h | 46 | ||||
| -rw-r--r-- | addons/library.xbmc.addon/libXBMC_addon.h | 182 |
3 files changed, 491 insertions, 0 deletions
diff --git a/addons/library.xbmc.addon/dlfcn-win32.cpp b/addons/library.xbmc.addon/dlfcn-win32.cpp new file mode 100644 index 0000000000..583992120f --- /dev/null +++ b/addons/library.xbmc.addon/dlfcn-win32.cpp @@ -0,0 +1,263 @@ +/* + * dlfcn-win32 + * Copyright (c) 2007 Ramiro Polla + * + * 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; either + * version 2.1 of the License, or (at your option) any later version. + * + * 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 + */ + +#include <windows.h> +#include <stdio.h> + +#include "dlfcn-win32.h" + +/* Note: + * MSDN says these functions are not thread-safe. We make no efforts to have + * any kind of thread safety. + */ + +/* I have no special reason to have set MAX_GLOBAL_OBJECTS to this value. Any + * comments are welcome. + */ +#define MAX_OBJECTS 255 + +static HMODULE global_objects[MAX_OBJECTS]; + +/* This function adds an object to the list of global objects. + * The implementation is very simple and slow. + * TODO: should failing this function be enough to fail the call to dlopen( )? + */ +static void global_object_add( HMODULE hModule ) +{ + int i; + + for( i = 0 ; i < MAX_OBJECTS ; i++ ) + { + if( !global_objects[i] ) + { + global_objects[i] = hModule; + break; + } + } +} + +static void global_object_rem( HMODULE hModule ) +{ + int i; + + for( i = 0 ; i < MAX_OBJECTS ; i++ ) + { + if( global_objects[i] == hModule ) + { + global_objects[i] = 0; + break; + } + } +} + +/* Argument to last function. Used in dlerror( ) */ +static char last_name[MAX_PATH]; + +static int copy_string( char *dest, int dest_size, const char *src ) +{ + int i = 0; + + if( src && dest ) + { + for( i = 0 ; i < dest_size-1 ; i++ ) + { + if( !src[i] ) + break; + else + dest[i] = src[i]; + } + } + dest[i] = '\0'; + + return i; +} + +void *dlopen( const char *file, int mode ) +{ + HMODULE hModule; + UINT uMode; + + /* Do not let Windows display the critical-error-handler message box */ + uMode = SetErrorMode( SEM_FAILCRITICALERRORS ); + + if( file == 0 ) + { + /* Save NULL pointer for error message */ + _snprintf_s( last_name, MAX_PATH, MAX_PATH, "0x%p", file ); + + /* POSIX says that if the value of file is 0, a handle on a global + * symbol object must be provided. That object must be able to access + * all symbols from the original program file, and any objects loaded + * with the RTLD_GLOBAL flag. + * The return value from GetModuleHandle( ) allows us to retrieve + * symbols only from the original program file. For objects loaded with + * the RTLD_GLOBAL flag, we create our own list later on. + */ + hModule = GetModuleHandle( NULL ); + } + else + { + char lpFileName[MAX_PATH]; + int i; + + /* MSDN says backslashes *must* be used instead of forward slashes. */ + for( i = 0 ; i < sizeof(lpFileName)-1 ; i++ ) + { + if( !file[i] ) + break; + else if( file[i] == '/' ) + lpFileName[i] = '\\'; + else + lpFileName[i] = file[i]; + } + lpFileName[i] = '\0'; + + /* Save file name for error message */ + copy_string( last_name, sizeof(last_name), lpFileName ); + + /* POSIX says the search path is implementation-defined. + * LOAD_WITH_ALTERED_SEARCH_PATH is used to make it behave more closely + * to UNIX's search paths (start with system folders instead of current + * folder). + */ + hModule = LoadLibraryEx( (LPSTR) lpFileName, NULL, + LOAD_WITH_ALTERED_SEARCH_PATH ); + /* If the object was loaded with RTLD_GLOBAL, add it to list of global + * objects, so that its symbols may be retrieved even if the handle for + * the original program file is passed. POSIX says that if the same + * file is specified in multiple invocations, and any of them are + * RTLD_GLOBAL, even if any further invocations use RTLD_LOCAL, the + * symbols will remain global. + */ + + if( hModule && (mode & RTLD_GLOBAL) ) + global_object_add( hModule ); + } + + /* Return to previous state of the error-mode bit flags. */ + SetErrorMode( uMode ); + + return (void *) hModule; +} + +int dlclose( void *handle ) +{ + HMODULE hModule = (HMODULE) handle; + BOOL ret; + + /* Save handle for error message */ + _snprintf_s( last_name, MAX_PATH, MAX_PATH, "0x%p", handle ); + + ret = FreeLibrary( hModule ); + + /* If the object was loaded with RTLD_GLOBAL, remove it from list of global + * objects. + */ + if( ret ) + global_object_rem( hModule ); + + /* dlclose's return value in inverted in relation to FreeLibrary's. */ + ret = !ret; + + return (int) ret; +} + +void *dlsym( void *handle, const char *name ) +{ + FARPROC symbol; + HMODULE myhandle = (HMODULE) handle; + + /* Save symbol name for error message */ + copy_string( last_name, sizeof(last_name), name ); + + symbol = GetProcAddress( myhandle, name ); +#if 0 + if( symbol == NULL ) + { + HMODULE hModule; + + /* If the handle for the original program file is passed, also search + * in all globally loaded objects. + */ + + hModule = GetModuleHandle( NULL ); + + if( hModule == handle ) + { + int i; + + for( i = 0 ; i < MAX_OBJECTS ; i++ ) + { + if( global_objects[i] != 0 ) + { + symbol = GetProcAddress( global_objects[i], name ); + if( symbol != NULL ) + break; + } + } + } + + + CloseHandle( hModule ); + } +#endif + return (void*) symbol; +} + +char *dlerror( void ) +{ + DWORD dwMessageId; + /* POSIX says this function doesn't have to be thread-safe, so we use one + * static buffer. + * MSDN says the buffer cannot be larger than 64K bytes, so we set it to + * the limit. + */ + static char lpBuffer[65535]; + DWORD ret; + + dwMessageId = GetLastError( ); + + if( dwMessageId == 0 ) + return NULL; + + /* Format error message to: + * "<argument to function that failed>": <Windows localized error message> + */ + ret = copy_string( lpBuffer, sizeof(lpBuffer), "\"" ); + ret += copy_string( lpBuffer+ret, sizeof(lpBuffer)-ret, last_name ); + ret += copy_string( lpBuffer+ret, sizeof(lpBuffer)-ret, "\": " ); + ret += FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM, NULL, dwMessageId, + MAKELANGID( LANG_NEUTRAL, SUBLANG_DEFAULT ), + lpBuffer+ret, sizeof(lpBuffer)-ret, NULL ); + + if( ret > 1 ) + { + /* POSIX says the string must not have trailing <newline> */ + if( lpBuffer[ret-2] == '\r' && lpBuffer[ret-1] == '\n' ) + lpBuffer[ret-2] = '\0'; + } + + /* POSIX says that invoking dlerror( ) a second time, immediately following + * a prior invocation, shall result in NULL being returned. + */ + SetLastError(0); + + return lpBuffer; +} + diff --git a/addons/library.xbmc.addon/dlfcn-win32.h b/addons/library.xbmc.addon/dlfcn-win32.h new file mode 100644 index 0000000000..b93a029f29 --- /dev/null +++ b/addons/library.xbmc.addon/dlfcn-win32.h @@ -0,0 +1,46 @@ +#pragma once +/* + * dlfcn-win32 + * Copyright (c) 2007 Ramiro Polla + * + * 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; either + * version 2.1 of the License, or (at your option) any later version. + * + * 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 + */ + +#ifndef DLFCN_H +#define DLFCN_H + +/* POSIX says these are implementation-defined. + * To simplify use with Windows API, we treat them the same way. + */ + +#define RTLD_LAZY 0 +#define RTLD_NOW 0 + +#define RTLD_GLOBAL (1 << 1) +#define RTLD_LOCAL (1 << 2) + +/* These two were added in The Open Group Base Specifications Issue 6. + * Note: All other RTLD_* flags in any dlfcn.h are not standard compliant. + */ + +#define RTLD_DEFAULT 0 +#define RTLD_NEXT 0 + +void *dlopen ( const char *file, int mode ); +int dlclose( void *handle ); +void *dlsym ( void *handle, const char *name ); +char *dlerror( void ); + +#endif /* DLFCN-WIN32_H */ diff --git a/addons/library.xbmc.addon/libXBMC_addon.h b/addons/library.xbmc.addon/libXBMC_addon.h new file mode 100644 index 0000000000..75012e9aff --- /dev/null +++ b/addons/library.xbmc.addon/libXBMC_addon.h @@ -0,0 +1,182 @@ +#pragma once +/* + * Copyright (C) 2005-2010 Team XBMC + * http://www.xbmc.org + * + * This Program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This Program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with XBMC; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * http://www.gnu.org/copyleft/gpl.html + * + */ + +#include <string> +#include <vector> +#include <string.h> +#include <stdlib.h> +#include <stdio.h> + +#ifdef _WIN32 // windows +#include "dlfcn-win32.h" +#define ADDON_DLL "\\library.xbmc.addon\\libXBMC_addon" ADDON_HELPER_EXT +#define ADDON_HELPER_PLATFORM "win32" +#define ADDON_HELPER_EXT ".dll" +#else +#if defined(__APPLE__) // osx +#define ADDON_HELPER_PLATFORM "osx" +#if defined(__POWERPC__) +#define ADDON_HELPER_ARCH "powerpc" +#elif defined(__arm__) +#define ADDON_HELPER_ARCH "arm" +#else +#define ADDON_HELPER_ARCH "x86" +#endif +#else // linux +#define ADDON_HELPER_PLATFORM "linux" +#if defined(__x86_64__) +#define ADDON_HELPER_ARCH "x86_64" +#elif defined(_POWERPC) +#define ADDON_HELPER_ARCH "powerpc" +#elif defined(_POWERPC64) +#define ADDON_HELPER_ARCH "powerpc64" +#elif defined(__ARMEL__) +#define ADDON_HELPER_ARCH "arm" +#elif defined(_MIPSEL) +#define ADDON_HELPER_ARCH "mipsel" +#else +#define ADDON_HELPER_ARCH "i486" +#endif +#endif +#include <dlfcn.h> // linux+osx +#define ADDON_HELPER_EXT ".so" +#define ADDON_DLL "/library.xbmc.addon/libXBMC_addon-" ADDON_HELPER_ARCH "-" ADDON_HELPER_PLATFORM ADDON_HELPER_EXT +#endif + +#ifdef LOG_DEBUG +#undef LOG_DEBUG +#endif +#ifdef LOG_INFO +#undef LOG_INFO +#endif +#ifdef LOG_NOTICE +#undef LOG_NOTICE +#endif +#ifdef LOG_ERROR +#undef LOG_ERROR +#endif + +namespace ADDON +{ + typedef enum addon_log + { + LOG_DEBUG, + LOG_INFO, + LOG_NOTICE, + LOG_ERROR + } addon_log_t; + + typedef enum queue_msg + { + QUEUE_INFO, + QUEUE_WARNING, + QUEUE_ERROR + } queue_msg_t; + + class CHelper_libXBMC_addon + { + public: + CHelper_libXBMC_addon() + { + m_libXBMC_addon = NULL; + m_Handle = NULL; + } + + ~CHelper_libXBMC_addon() + { + if (m_libXBMC_addon) + { + XBMC_unregister_me(); + dlclose(m_libXBMC_addon); + } + } + + bool RegisterMe(void *Handle) + { + m_Handle = Handle; + + std::string libBasePath; + libBasePath = ((cb_array*)m_Handle)->libPath; + libBasePath += ADDON_DLL; + + m_libXBMC_addon = dlopen(libBasePath.c_str(), RTLD_LAZY); + if (m_libXBMC_addon == NULL) + { + fprintf(stderr, "Unable to load %s\n", dlerror()); + return false; + } + + XBMC_register_me = (int (*)(void *HANDLE)) + dlsym(m_libXBMC_addon, "XBMC_register_me"); + if (XBMC_register_me == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + XBMC_unregister_me = (void (*)()) + dlsym(m_libXBMC_addon, "XBMC_unregister_me"); + if (XBMC_unregister_me == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + Log = (void (*)(const addon_log_t loglevel, const char *format, ... )) + dlsym(m_libXBMC_addon, "XBMC_log"); + if (Log == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + GetSetting = (bool (*)(const char* settingName, void *settingValue)) + dlsym(m_libXBMC_addon, "XBMC_get_setting"); + if (GetSetting == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + QueueNotification = (void (*)(const queue_msg_t loglevel, const char *format, ... )) + dlsym(m_libXBMC_addon, "XBMC_queue_notification"); + if (QueueNotification == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + UnknownToUTF8 = (void (*)(std::string &str)) + dlsym(m_libXBMC_addon, "XBMC_unknown_to_utf8"); + if (UnknownToUTF8 == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + GetLocalizedString = (const char* (*)(int dwCode)) + dlsym(m_libXBMC_addon, "XBMC_get_localized_string"); + if (GetLocalizedString == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + GetDVDMenuLanguage = (const char* (*)()) + dlsym(m_libXBMC_addon, "XBMC_get_dvd_menu_language"); + if (GetDVDMenuLanguage == NULL) { fprintf(stderr, "Unable to assign function %s\n", dlerror()); return false; } + + return XBMC_register_me(m_Handle) > 0; + } + + void (*Log)(const addon_log_t loglevel, const char *format, ... ); + bool (*GetSetting)(const char* settingName, void *settingValue); + void (*QueueNotification)(const queue_msg_t type, const char *format, ... ); + void (*UnknownToUTF8)(std::string &str); + const char* (*GetLocalizedString)(int dwCode); + const char* (*GetDVDMenuLanguage)(); + + protected: + int (*XBMC_register_me)(void *HANDLE); + void (*XBMC_unregister_me)(); + + private: + void *m_libXBMC_addon; + void *m_Handle; + struct cb_array + { + const char* libPath; + }; + }; +}; |