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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* Copyright 1999-2008 Brian Paul
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
**************************************************************************/
#include "detect_os.h"
#if DETECT_OS_POSIX_LITE
#include <dlfcn.h>
#endif
#if DETECT_OS_WINDOWS
#include <windows.h>
#endif
#include "u_dl.h"
#include "u_pointer.h"
#include "u_string.h"
struct util_dl_library *
util_dl_open(const char *filename)
{
#if DETECT_OS_POSIX_LITE
return (struct util_dl_library *)dlopen(filename, RTLD_LAZY | RTLD_LOCAL);
#elif DETECT_OS_WINDOWS
return (struct util_dl_library *)LoadLibraryA(filename);
#else
return NULL;
#endif
}
util_dl_proc
util_dl_get_proc_address(struct util_dl_library *library,
const char *procname)
{
#if DETECT_OS_POSIX_LITE
return (util_dl_proc) pointer_to_func(dlsym((void *)library, procname));
#elif DETECT_OS_WINDOWS
return (util_dl_proc)GetProcAddress((HMODULE)library, procname);
#else
return (util_dl_proc)NULL;
#endif
}
char *
util_dl_get_path_from_proc(const void *func_proc)
{
#if defined(HAVE_DLADDR)
Dl_info info;
if (dladdr(func_proc, &info) == 0) {
return NULL;
}
return realpath(info.dli_fname, NULL);
#elif DETECT_OS_WINDOWS
HMODULE mod = NULL;
GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
(LPCWSTR)func_proc,
&mod);
if (!mod)
return NULL;
WCHAR filename[MAX_PATH];
DWORD filename_length = GetModuleFileNameW(mod, filename, ARRAY_SIZE(filename));
if (filename_length == 0 || filename_length == ARRAY_SIZE(filename))
return NULL;
WCHAR filename_full[MAX_PATH];
DWORD filename_full_length = GetFullPathNameW(filename, ARRAY_SIZE(filename_full), filename_full, NULL);
if (filename_full_length == 0 || filename_full_length == ARRAY_SIZE(filename_full))
return NULL;
return strdup_wstr_utf8(filename_full);
#else
return NULL;
#endif
}
void
util_dl_close(struct util_dl_library *library)
{
#if DETECT_OS_POSIX_LITE
dlclose((void *)library);
#elif DETECT_OS_WINDOWS
FreeLibrary((HMODULE)library);
#else
(void)library;
#endif
}
const char *
util_dl_error(void)
{
#if DETECT_OS_POSIX_LITE
return dlerror();
#elif DETECT_OS_WINDOWS
return "unknown error";
#else
return "unknown error";
#endif
}
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