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/*
* dlfcn-win32
* Copyright (c) 2007-2009 Ramiro Polla
* Copyright (c) 2014 Tiancheng "Timothy" Gu
* Copyright (c) 2019 Pali Rohár <pali.rohar@gmail.com>
*
* dlfcn-win32 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.
*
* dlfcn-win32 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 dlfcn-win32; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef _DEBUG
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
#endif
#include <stdio.h>
#include <string.h>
#include <windows.h>
#include "dlfcn.h"
/* If these dlclose's fails, we don't care as the handles are going to be
closed eventually when the program ends. */
#define CLOSE_LIB dlclose( library )
#define CLOSE_GLOBAL dlclose( global )
#define RETURN_ERROR printf("From line %d\n", __LINE__); return 1
#define RUNFUNC do { \
ret = function (); \
if( ret != 0) { \
CLOSE_LIB; \
CLOSE_GLOBAL; \
RETURN_ERROR; \
} \
} while( 0 )
/* This is what this test does:
* - Open library with RTLD_GLOBAL
* - Get global object
* - Get symbol from library through library object <- works
* - Run function if it worked
* - Get nonexistent symbol from library through library object <- fails
* - Get symbol from library through global object <- works
* - Run function if it worked
* - Get nonexistent symbol from library through global object <- fails
* - Close library
* - Open library with RTLD_LOCAL
* - Get symbol from library through library object <- works
* - Run function if it worked
* - Get nonexistent symbol from library through library object <- fails
* - Get local symbol from library through global object <- fails
* - Get nonexistent local symbol from library through global object <- fails
* - Open library again (without closing it first) with RTLD_GLOBAL
* - Get symbol from library through global object <- works
* - Get nonexistent symbol from library through global object <- fails
* - Close library
* - Close global object
*
* If one test fails, the program terminates itself.
*/
int main()
{
void *global;
void *library2;
void *library;
char *error;
int (*function)( void );
int (*function2_from_library2)( void );
size_t (*fwrite_local) ( const void *, size_t, size_t, FILE * );
size_t (*fputs_default) ( const char *, FILE * );
int (*nonexistentfunction)( void );
int ret;
HMODULE library3;
#ifdef _DEBUG
_CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
_CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDOUT);
_CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
_CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDOUT);
_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDOUT);
#endif
library2 = dlopen( "testdll2.dll", RTLD_GLOBAL );
if( !library2 )
{
error = dlerror( );
printf( "ERROR\tCould not open library2 globally: %s\n", error ? error : "" );
RETURN_ERROR;
}
else
printf( "SUCCESS\tOpened library2 globally: %p\n", library2 );
library = dlopen( "testdll.dll", RTLD_GLOBAL );
if( !library )
{
error = dlerror( );
printf( "ERROR\tCould not open library globally: %s\n", error ? error : "" );
RETURN_ERROR;
}
else
printf( "SUCCESS\tOpened library globally: %p\n", library );
global = dlopen( 0, RTLD_GLOBAL );
if( !global )
{
error = dlerror( );
printf( "ERROR\tCould not open global handle: %s\n", error ? error : "" );
CLOSE_LIB;
RETURN_ERROR;
}
else
printf( "SUCCESS\tGot global handle: %p\n", global );
fwrite_local = dlsym(global, "fwrite");
if (!fwrite_local)
{
error = dlerror();
printf("ERROR\tCould not get symbol from global handle: %s\n",
error ? error : "");
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf("SUCCESS\tGot symbol from global handle: %p\n", fwrite_local);
char * hello_world = "Hello world from local fwrite!\n";
fwrite_local(hello_world,sizeof(char),strlen(hello_world),stderr);
fflush(stderr);
fputs_default = dlsym(RTLD_DEFAULT, "fputs");
if (!fputs_default)
{
error = dlerror();
printf("ERROR\tCould not get symbol from default handle: %s\n",
error ? error : "");
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf("SUCCESS\tGot symbol from default handle: %p\n", fputs_default);
char * hello_world_fputs = "Hello world from default fputs!\n";
fputs_default(hello_world_fputs, stderr);
fflush(stderr);
function = dlsym( library, "function" );
if( !function )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from library handle: %s\n",
error ? error : "" );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tGot symbol from library handle: %p\n", function );
RUNFUNC;
function2_from_library2 = dlsym( library2, "function2" );
if( !function2_from_library2 )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from library2 handle: %s\n",
error ? error : "" );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tGot symbol from library2 handle: %p\n", function2_from_library2 );
ret = function2_from_library2 ();
if( ret != 2 )
{
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
nonexistentfunction = dlsym( library, "nonexistentfunction" );
if( nonexistentfunction )
{
error = dlerror( );
printf( "ERROR\tGot nonexistent symbol from library handle: %p\n", nonexistentfunction );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else {
error = dlerror( );
printf( "SUCCESS\tCould not get nonexistent symbol from library handle: %s\n",
error ? error : "" );
}
function = dlsym( global, "function" );
if( !function )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from global handle: %s\n",
error ? error : "" );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tGot symbol from global handle: %p\n", function );
RUNFUNC;
nonexistentfunction = dlsym( global, "nonexistentfunction" );
if( nonexistentfunction )
{
error = dlerror( );
printf( "ERROR\tGot nonexistent symbol from global handle: %p\n", nonexistentfunction );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else {
error = dlerror( );
printf( "SUCCESS\tCould not get nonexistent symbol from global handle: %s\n",
error ? error : "" );
}
ret = dlclose( library );
if( ret )
{
error = dlerror( );
printf( "ERROR\tCould not close library: %s\n", error ? error : "" );
RETURN_ERROR;
}
else
printf( "SUCCESS\tClosed library.\n" );
ret = dlclose( library2 );
if( ret )
{
error = dlerror( );
printf( "ERROR\tCould not close library2: %s\n", error ? error : "" );
RETURN_ERROR;
}
else
printf( "SUCCESS\tClosed library2.\n" );
library = dlopen( "testdll.dll", RTLD_LOCAL );
if( !library )
{
error = dlerror( );
printf( "ERROR\tCould not open library locally: %s\n", error ? error : "" );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tOpened library locally: %p\n", library );
function = dlsym( library, "function" );
if( !function )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from library handle: %s\n",
error ? error : "" );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tGot symbol from library handle: %p\n", function );
RUNFUNC;
nonexistentfunction = dlsym( library, "nonexistentfunction" );
if( nonexistentfunction )
{
error = dlerror( );
printf( "ERROR\tGot nonexistent symbol from library handle: %p\n", nonexistentfunction );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else {
error = dlerror( );
printf( "SUCCESS\tCould not get nonexistent symbol from library handle: %s\n",
error ? error : "" );
}
function = dlsym( global, "function" );
if( function )
{
error = dlerror( );
printf( "ERROR\tGot local symbol from global handle: %s @ %p\n",
error ? error : "", function );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tDid not get local symbol from global handle.\n" );
nonexistentfunction = dlsym( global, "nonexistentfunction" );
if( nonexistentfunction )
{
error = dlerror( );
printf( "ERROR\tGot nonexistent local symbol from global handle: %p\n", nonexistentfunction );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else {
error = dlerror( );
printf( "SUCCESS\tDid not get nonexistent local symbol from global handle: %s\n",
error ? error : "" );
}
library = dlopen( "testdll.dll", RTLD_GLOBAL );
if( !library )
{
error = dlerror( );
printf( "ERROR\tCould not open library globally without closing it first: %s\n", error ? error : "" );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tOpened library globally without closing it first: %p\n", library );
function = dlsym( global, "function" );
if( !function )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from global handle: %s\n",
error ? error : "" );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tGot symbol from global handle: %p\n", function );
RUNFUNC;
nonexistentfunction = dlsym( global, "nonexistentfunction" );
if( nonexistentfunction )
{
error = dlerror( );
printf( "ERROR\tGot nonexistent symbol from global handle: %p\n", nonexistentfunction );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else {
error = dlerror( );
printf( "SUCCESS\tCould not get nonexistent symbol from global handle: %s\n",
error ? error : "" );
/* Test that the second call to dlerror() returns null as in the specs
See https://github.com/dlfcn-win32/dlfcn-win32/issues/34 */
error = dlerror( );
if( error == NULL )
{
printf( "SUCCESS\tSecond consecutive call to dlerror returned NULL\n");
}
else
{
printf( "ERROR\tSecond consecutive call to dlerror returned a non-NULL pointer: %p\n", error );
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
}
function = dlsym(global, "fwrite");
if (!function)
{
error = dlerror();
printf("ERROR\tCould not get symbol from global handle: %s\n",
error ? error : "");
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf("SUCCESS\tGot symbol from global handle: %p\n", function);
library3 = LoadLibraryA("testdll3.dll");
if (!library3)
{
printf( "ERROR\tCould not open library3 via WINAPI\n" );
RETURN_ERROR;
}
else
printf( "SUCCESS\tOpened library3 via WINAPI: %p\n", library3 );
ret = dlclose( library );
if( ret )
{
error = dlerror( );
printf( "ERROR\tCould not close library: %s\n", error ? error : "" );
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf( "SUCCESS\tClosed library.\n" );
function = dlsym(global, "function3");
if (!function)
{
error = dlerror();
printf("ERROR\tCould not get symbol from global handle: %s\n",
error ? error : "");
CLOSE_LIB;
CLOSE_GLOBAL;
RETURN_ERROR;
}
else
printf("SUCCESS\tGot symbol from global handle: %p\n", function);
RUNFUNC;
ret = dlclose( global );
if( ret )
{
error = dlerror( );
printf( "ERROR\tCould not close global handle: %s\n", error ? error : "" );
RETURN_ERROR;
}
else
printf( "SUCCESS\tClosed global handle.\n" );
#ifdef _DEBUG
_CrtDumpMemoryLeaks();
#endif
return 0;
}
|
