1/************************************************************************** 2 * 3 * Copyright 2009 VMware, Inc. 4 * Copyright 1999-2008 Brian Paul 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 21 * USE OR OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * The above copyright notice and this permission notice (including the 24 * next paragraph) shall be included in all copies or substantial portions 25 * of the Software. 26 * 27 **************************************************************************/ 28 29 30#include "detect_os.h" 31 32#if DETECT_OS_UNIX 33#include <dlfcn.h> 34#endif 35#if DETECT_OS_WINDOWS 36#include <windows.h> 37#endif 38 39#include "u_dl.h" 40#include "u_pointer.h" 41 42 43struct util_dl_library * 44util_dl_open(const char *filename) 45{ 46#if DETECT_OS_UNIX 47 return (struct util_dl_library *)dlopen(filename, RTLD_LAZY | RTLD_LOCAL); 48#elif DETECT_OS_WINDOWS 49 return (struct util_dl_library *)LoadLibraryA(filename); 50#else 51 return NULL; 52#endif 53} 54 55 56util_dl_proc 57util_dl_get_proc_address(struct util_dl_library *library, 58 const char *procname) 59{ 60#if DETECT_OS_UNIX 61 return (util_dl_proc) pointer_to_func(dlsym((void *)library, procname)); 62#elif DETECT_OS_WINDOWS 63 return (util_dl_proc)GetProcAddress((HMODULE)library, procname); 64#else 65 return (util_dl_proc)NULL; 66#endif 67} 68 69 70void 71util_dl_close(struct util_dl_library *library) 72{ 73#if DETECT_OS_UNIX 74 dlclose((void *)library); 75#elif DETECT_OS_WINDOWS 76 FreeLibrary((HMODULE)library); 77#else 78 (void)library; 79#endif 80} 81 82 83const char * 84util_dl_error(void) 85{ 86#if DETECT_OS_UNIX 87 return dlerror(); 88#elif DETECT_OS_WINDOWS 89 return "unknown error"; 90#else 91 return "unknown error"; 92#endif 93} 94