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gstreamer/libs/winloader/module.c
Wim Taymans 8df1c8a278 Added DivX ;-) support by using the wine .dll loader. you must unzip binaries.zip from http://divx.euro.ru/binaries.z... 
Original commit message from CVS:
Added DivX ;-) support by using the wine .dll loader. you must unzip
binaries.zip from http://divx.euro.ru/binaries.zip into the win32
directory **of the source tree**.
Extended and bugfixed thr riff parser to support DivX ;-)
Extended the avi parser to support DivX ;-) and MPEG Layer 3.
Fixed a bug in mpg123. Sound still is seriously wrong with layer 3.
Fixed MPEG2 playback in gstplay.
Time indication in gstplay is temporarly broken.
2000-07-15 12:06:18 +00:00

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/*
* Modules
*
* Copyright 1995 Alexandre Julliard
*/
#include <assert.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <wine/windef.h>
#include <wine/winerror.h>
#include <wine/heap.h>
#include <wine/module.h>
#include <wine/pe_image.h>
#include <wine/debugtools.h>
struct modref_list_t;
typedef struct modref_list_t
{
WINE_MODREF* wm;
struct modref_list_t *next;
struct modref_list_t *prev;
}
modref_list;
//WINE_MODREF *local_wm=NULL;
modref_list* local_wm=NULL;
WINE_MODREF *MODULE_FindModule(LPCSTR m)
{
modref_list* list=local_wm;
TRACE("Module %s request\n", m);
if(list==NULL)
return NULL;
while(strcmp(m, list->wm->filename))
{
list=list->prev;
if(list==NULL)
return NULL;
}
TRACE("Resolved to %s\n", list->wm->filename);
return list->wm;
}
void MODULE_RemoveFromList(WINE_MODREF *mod)
{
modref_list* list=local_wm;
if(list==0)
return;
if(mod==0)
return;
if((list->prev==NULL)&&(list->next==NULL))
{
free(list);
local_wm=NULL;
return;
}
for(;list;list=list->prev)
{
if(list->wm==mod)
{
if(list->prev)
list->prev->next=list->next;
if(list->next)
list->next->prev=list->prev;
if(list==local_wm)
local_wm=list->prev;
free(list);
return;
}
}
}
WINE_MODREF *MODULE32_LookupHMODULE(HMODULE m)
{
modref_list* list=local_wm;
TRACE("Module %X request\n", m);
if(list==NULL)
return NULL;
while(m!=list->wm->module)
{
// printf("Checking list %X wm %X module %X\n",
// list, list->wm, list->wm->module);
list=list->prev;
if(list==NULL)
return NULL;
}
TRACE("LookupHMODULE hit %X\n", list->wm);
return list->wm;
}
/*************************************************************************
* MODULE_InitDll
*/
static WIN_BOOL MODULE_InitDll( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
{
WIN_BOOL retv = TRUE;
static LPCSTR typeName[] = { "PROCESS_DETACH", "PROCESS_ATTACH",
"THREAD_ATTACH", "THREAD_DETACH" };
assert( wm );
/* Skip calls for modules loaded with special load flags */
if ( ( wm->flags & WINE_MODREF_DONT_RESOLVE_REFS )
|| ( wm->flags & WINE_MODREF_LOAD_AS_DATAFILE ) )
return TRUE;
TRACE("(%s,%s,%p) - CALL\n", wm->modname, typeName[type], lpReserved );
/* Call the initialization routine */
switch ( wm->type )
{
case MODULE32_PE:
retv = PE_InitDLL( wm, type, lpReserved );
break;
case MODULE32_ELF:
/* no need to do that, dlopen() already does */
break;
default:
ERR("wine_modref type %d not handled.\n", wm->type );
retv = FALSE;
break;
}
/* The state of the module list may have changed due to the call
to PE_InitDLL. We cannot assume that this module has not been
deleted. */
TRACE("(%p,%s,%p) - RETURN %d\n", wm, typeName[type], lpReserved, retv );
return retv;
}
/*************************************************************************
* MODULE_DllProcessAttach
*
* Send the process attach notification to all DLLs the given module
* depends on (recursively). This is somewhat complicated due to the fact that
*
* - we have to respect the module dependencies, i.e. modules implicitly
* referenced by another module have to be initialized before the module
* itself can be initialized
*
* - the initialization routine of a DLL can itself call LoadLibrary,
* thereby introducing a whole new set of dependencies (even involving
* the 'old' modules) at any time during the whole process
*
* (Note that this routine can be recursively entered not only directly
* from itself, but also via LoadLibrary from one of the called initialization
* routines.)
*
* Furthermore, we need to rearrange the main WINE_MODREF list to allow
* the process *detach* notifications to be sent in the correct order.
* This must not only take into account module dependencies, but also
* 'hidden' dependencies created by modules calling LoadLibrary in their
* attach notification routine.
*
* The strategy is rather simple: we move a WINE_MODREF to the head of the
* list after the attach notification has returned. This implies that the
* detach notifications are called in the reverse of the sequence the attach
* notifications *returned*.
*
* NOTE: Assumes that the process critical section is held!
*
*/
WIN_BOOL MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved )
{
WIN_BOOL retv = TRUE;
int i;
assert( wm );
/* prevent infinite recursion in case of cyclical dependencies */
if ( ( wm->flags & WINE_MODREF_MARKER )
|| ( wm->flags & WINE_MODREF_PROCESS_ATTACHED ) )
return retv;
TRACE("(%s,%p) - START\n", wm->modname, lpReserved );
/* Tag current MODREF to prevent recursive loop */
wm->flags |= WINE_MODREF_MARKER;
/* Recursively attach all DLLs this one depends on */
/* for ( i = 0; retv && i < wm->nDeps; i++ )
if ( wm->deps[i] )
retv = MODULE_DllProcessAttach( wm->deps[i], lpReserved );
*/
/* Call DLL entry point */
//local_wm=wm;
if(local_wm)
{
local_wm->next=malloc(sizeof(modref_list));
local_wm->next->prev=local_wm;
local_wm->next->next=NULL;
local_wm->next->wm=wm;
local_wm=local_wm->next;
}
else
{
local_wm=malloc(sizeof(modref_list));
local_wm->next=local_wm->prev=NULL;
local_wm->wm=wm;
}
/* Remove recursion flag */
wm->flags &= ~WINE_MODREF_MARKER;
if ( retv )
{
retv = MODULE_InitDll( wm, DLL_PROCESS_ATTACH, lpReserved );
if ( retv )
wm->flags |= WINE_MODREF_PROCESS_ATTACHED;
}
TRACE("(%s,%p) - END\n", wm->modname, lpReserved );
return retv;
}
/*************************************************************************
* MODULE_DllProcessDetach
*
* Send DLL process detach notifications. See the comment about calling
* sequence at MODULE_DllProcessAttach. Unless the bForceDetach flag
* is set, only DLLs with zero refcount are notified.
*/
void MODULE_DllProcessDetach( WINE_MODREF* wm, WIN_BOOL bForceDetach, LPVOID lpReserved )
{
// WINE_MODREF *wm=local_wm;
wm->flags &= ~WINE_MODREF_PROCESS_ATTACHED;
MODULE_InitDll( wm, DLL_PROCESS_DETACH, lpReserved );
}
/*************************************************************************
* MODULE_DllThreadAttach
*
* Send DLL thread attach notifications. These are sent in the
* reverse sequence of process detach notification.
*
*/
/*
void MODULE_DllThreadAttach( LPVOID lpReserved )
{
WINE_MODREF *wm;
MODULE_InitDll( wm, DLL_THREAD_ATTACH, lpReserved );
}*/
/*************************************************************************
* MODULE_DllThreadDetach
*
* Send DLL thread detach notifications. These are sent in the
* same sequence as process detach notification.
*
*/
/*
void MODULE_DllThreadDetach( LPVOID lpReserved )
{
WINE_MODREF *wm;
MODULE_InitDll( wm, DLL_THREAD_DETACH, lpReserved );
}
*/
/***********************************************************************
* MODULE_CreateDummyModule
*
* Create a dummy NE module for Win32 or Winelib.
*/
HMODULE MODULE_CreateDummyModule( LPCSTR filename, HMODULE module32 )
{
printf("MODULE_CreateDummyModule:: Not implemented\n");
return 0;
}
/*
HMODULE MODULE_CreateDummyModule( LPCSTR filename, HMODULE module32 )
{
HMODULE hModule;
NE_MODULE *pModule;
SEGTABLEENTRY *pSegment;
char *pStr,*s;
unsigned int len;
const char* basename;
OFSTRUCT *ofs;
int of_size, size;
// Extract base filename
basename = strrchr(filename, '\\');
if (!basename) basename = filename;
else basename++;
len = strlen(basename);
if ((s = strchr(basename, '.'))) len = s - basename;
// Allocate module
of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
+ strlen(filename) + 1;
size = sizeof(NE_MODULE) +
// loaded file info
of_size +
// segment table: DS,CS
2 * sizeof(SEGTABLEENTRY) +
// name table
len + 2 +
// several empty tables
8;
hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
if (!hModule) return (HMODULE)11; // invalid exe
FarSetOwner16( hModule, hModule );
pModule = (NE_MODULE *)GlobalLock16( hModule );
// Set all used entries
pModule->magic = IMAGE_OS2_SIGNATURE;
pModule->count = 1;
pModule->next = 0;
pModule->flags = 0;
pModule->dgroup = 0;
pModule->ss = 1;
pModule->cs = 2;
pModule->heap_size = 0;
pModule->stack_size = 0;
pModule->seg_count = 2;
pModule->modref_count = 0;
pModule->nrname_size = 0;
pModule->fileinfo = sizeof(NE_MODULE);
pModule->os_flags = NE_OSFLAGS_WINDOWS;
pModule->self = hModule;
pModule->module32 = module32;
// Set version and flags
if (module32)
{
pModule->expected_version =
((PE_HEADER(module32)->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
(PE_HEADER(module32)->OptionalHeader.MinorSubsystemVersion & 0xff);
pModule->flags |= NE_FFLAGS_WIN32;
if (PE_HEADER(module32)->FileHeader.Characteristics & IMAGE_FILE_DLL)
pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
}
// Set loaded file information
ofs = (OFSTRUCT *)(pModule + 1);
memset( ofs, 0, of_size );
ofs->cBytes = of_size < 256 ? of_size : 255; // FIXME
strcpy( ofs->szPathName, filename );
pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + of_size);
pModule->seg_table = (int)pSegment - (int)pModule;
// Data segment
pSegment->size = 0;
pSegment->flags = NE_SEGFLAGS_DATA;
pSegment->minsize = 0x1000;
pSegment++;
// Code segment
pSegment->flags = 0;
pSegment++;
// Module name
pStr = (char *)pSegment;
pModule->name_table = (int)pStr - (int)pModule;
assert(len<256);
*pStr = len;
lstrcpynA( pStr+1, basename, len+1 );
pStr += len+2;
// All tables zero terminated
pModule->res_table = pModule->import_table = pModule->entry_table =
(int)pStr - (int)pModule;
NE_RegisterModule( pModule );
return hModule;
}
*/
/***********************************************************************
* MODULE_GetBinaryType
*
* The GetBinaryType function determines whether a file is executable
* or not and if it is it returns what type of executable it is.
* The type of executable is a property that determines in which
* subsystem an executable file runs under.
*
* Binary types returned:
* SCS_32BIT_BINARY: A Win32 based application
* SCS_DOS_BINARY: An MS-Dos based application
* SCS_WOW_BINARY: A Win16 based application
* SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
* SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
* SCS_OS216_BINARY: A 16bit OS/2 based application
*
* Returns TRUE if the file is an executable in which case
* the value pointed by lpBinaryType is set.
* Returns FALSE if the file is not an executable or if the function fails.
*
* To do so it opens the file and reads in the header information
* if the extended header information is not present it will
* assume that the file is a DOS executable.
* If the extended header information is present it will
* determine if the file is a 16 or 32 bit Windows executable
* by check the flags in the header.
*
* Note that .COM and .PIF files are only recognized by their
* file name extension; but Windows does it the same way ...
*/
/*
static WIN_BOOL MODULE_GetBinaryType( HANDLE hfile, LPCSTR filename,
LPDWORD lpBinaryType )
{
IMAGE_DOS_HEADER mz_header;
char magic[4], *ptr;
DWORD len;
// Seek to the start of the file and read the DOS header information.
if ( SetFilePointer( hfile, 0, NULL, SEEK_SET ) != -1
&& ReadFile( hfile, &mz_header, sizeof(mz_header), &len, NULL )
&& len == sizeof(mz_header) )
{
// Now that we have the header check the e_magic field
// to see if this is a dos image.
//
if ( mz_header.e_magic == IMAGE_DOS_SIGNATURE )
{
WIN_BOOL lfanewValid = FALSE;
// We do have a DOS image so we will now try to seek into
// the file by the amount indicated by the field
// "Offset to extended header" and read in the
// "magic" field information at that location.
// This will tell us if there is more header information
// to read or not.
//
// But before we do we will make sure that header
// structure encompasses the "Offset to extended header"
// field.
//
if ( (mz_header.e_cparhdr<<4) >= sizeof(IMAGE_DOS_HEADER) )
if ( ( mz_header.e_crlc == 0 ) ||
( mz_header.e_lfarlc >= sizeof(IMAGE_DOS_HEADER) ) )
if ( mz_header.e_lfanew >= sizeof(IMAGE_DOS_HEADER)
&& SetFilePointer( hfile, mz_header.e_lfanew, NULL, SEEK_SET ) != -1
&& ReadFile( hfile, magic, sizeof(magic), &len, NULL )
&& len == sizeof(magic) )
lfanewValid = TRUE;
if ( !lfanewValid )
{
// If we cannot read this "extended header" we will
// assume that we have a simple DOS executable.
//
*lpBinaryType = SCS_DOS_BINARY;
return TRUE;
}
else
{
// Reading the magic field succeeded so
// we will try to determine what type it is.
//
if ( *(DWORD*)magic == IMAGE_NT_SIGNATURE )
{
// This is an NT signature.
//
*lpBinaryType = SCS_32BIT_BINARY;
return TRUE;
}
else if ( *(WORD*)magic == IMAGE_OS2_SIGNATURE )
{
// The IMAGE_OS2_SIGNATURE indicates that the
// "extended header is a Windows executable (NE)
// header." This can mean either a 16-bit OS/2
// or a 16-bit Windows or even a DOS program
// (running under a DOS extender). To decide
// which, we'll have to read the NE header.
///
IMAGE_OS2_HEADER ne;
if ( SetFilePointer( hfile, mz_header.e_lfanew, NULL, SEEK_SET ) != -1
&& ReadFile( hfile, &ne, sizeof(ne), &len, NULL )
&& len == sizeof(ne) )
{
switch ( ne.ne_exetyp )
{
case 2: *lpBinaryType = SCS_WOW_BINARY; return TRUE;
case 5: *lpBinaryType = SCS_DOS_BINARY; return TRUE;
default: *lpBinaryType = SCS_OS216_BINARY; return TRUE;
}
}
// Couldn't read header, so abort.
return FALSE;
}
else
{
// Unknown extended header, but this file is nonetheless
// DOS-executable.
//
*lpBinaryType = SCS_DOS_BINARY;
return TRUE;
}
}
}
}
// If we get here, we don't even have a correct MZ header.
// Try to check the file extension for known types ...
//
ptr = strrchr( filename, '.' );
if ( ptr && !strchr( ptr, '\\' ) && !strchr( ptr, '/' ) )
{
if ( !lstrcmpiA( ptr, ".COM" ) )
{
*lpBinaryType = SCS_DOS_BINARY;
return TRUE;
}
if ( !lstrcmpiA( ptr, ".PIF" ) )
{
*lpBinaryType = SCS_PIF_BINARY;
return TRUE;
}
}
return FALSE;
}
*/
/***********************************************************************
* GetBinaryTypeA [KERNEL32.280]
*/
/*
WIN_BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
{
WIN_BOOL ret = FALSE;
HANDLE hfile;
TRACE_(win32)("%s\n", lpApplicationName );
// Sanity check.
if ( lpApplicationName == NULL || lpBinaryType == NULL )
return FALSE;
// Open the file indicated by lpApplicationName for reading.
hfile = CreateFileA( lpApplicationName, GENERIC_READ, 0,
NULL, OPEN_EXISTING, 0, -1 );
if ( hfile == INVALID_HANDLE_VALUE )
return FALSE;
// Check binary type
ret = MODULE_GetBinaryType( hfile, lpApplicationName, lpBinaryType );
// Close the file.
CloseHandle( hfile );
return ret;
}
*/
/***********************************************************************
* LoadLibraryExA (KERNEL32)
*/
HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
{
WINE_MODREF *wm;
if(!libname)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
wm = MODULE_LoadLibraryExA( libname, hfile, flags );
if ( wm )
{
if ( !MODULE_DllProcessAttach( wm, NULL ) )
{
WARN_(module)("Attach failed for module '%s', \n", libname);
MODULE_FreeLibrary(wm);
SetLastError(ERROR_DLL_INIT_FAILED);
MODULE_RemoveFromList(wm);
wm = NULL;
}
}
return wm ? wm->module : 0;
}
/***********************************************************************
* MODULE_LoadLibraryExA (internal)
*
* Load a PE style module according to the load order.
*
* The HFILE parameter is not used and marked reserved in the SDK. I can
* only guess that it should force a file to be mapped, but I rather
* ignore the parameter because it would be extremely difficult to
* integrate this with different types of module represenations.
*
*/
WINE_MODREF *MODULE_LoadLibraryExA( LPCSTR libname, HFILE hfile, DWORD flags )
{
DWORD err = GetLastError();
WINE_MODREF *pwm;
int i;
// module_loadorder_t *plo;
SetLastError( ERROR_FILE_NOT_FOUND );
TRACE("Trying native dll '%s'\n", libname);
pwm = PE_LoadLibraryExA(libname, flags);
if(!pwm)
{
TRACE("Trying ELF dll '%s'\n", libname);
pwm=ELFDLL_LoadLibraryExA(libname, flags);
}
// printf("0x%08x\n", pwm);
// break;
if(pwm)
{
/* Initialize DLL just loaded */
TRACE("Loaded module '%s' at 0x%08x, \n", libname, pwm->module);
/* Set the refCount here so that an attach failure will */
/* decrement the dependencies through the MODULE_FreeLibrary call. */
pwm->refCount++;
SetLastError( err ); /* restore last error */
return pwm;
}
WARN("Failed to load module '%s'; error=0x%08lx, \n", libname, GetLastError());
return NULL;
}
/***********************************************************************
* LoadLibraryA (KERNEL32)
*/
HMODULE WINAPI LoadLibraryA(LPCSTR libname) {
return LoadLibraryExA(libname,0,0);
}
/***********************************************************************
* FreeLibrary
*/
WIN_BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
{
WIN_BOOL retv = FALSE;
WINE_MODREF *wm;
wm=MODULE32_LookupHMODULE(hLibModule);
// wm=local_wm;
if ( !wm || !hLibModule )
{
SetLastError( ERROR_INVALID_HANDLE );
return 0;
}
else
retv = MODULE_FreeLibrary( wm );
MODULE_RemoveFromList(wm);
return retv;
}
/***********************************************************************
* MODULE_DecRefCount
*
* NOTE: Assumes that the process critical section is held!
*/
static void MODULE_DecRefCount( WINE_MODREF *wm )
{
int i;
if ( wm->flags & WINE_MODREF_MARKER )
return;
if ( wm->refCount <= 0 )
return;
--wm->refCount;
TRACE("(%s) refCount: %d\n", wm->modname, wm->refCount );
if ( wm->refCount == 0 )
{
wm->flags |= WINE_MODREF_MARKER;
for ( i = 0; i < wm->nDeps; i++ )
if ( wm->deps[i] )
MODULE_DecRefCount( wm->deps[i] );
wm->flags &= ~WINE_MODREF_MARKER;
}
}
/***********************************************************************
* MODULE_FreeLibrary
*
* NOTE: Assumes that the process critical section is held!
*/
WIN_BOOL MODULE_FreeLibrary( WINE_MODREF *wm )
{
TRACE("(%s) - START\n", wm->modname );
/* Recursively decrement reference counts */
//MODULE_DecRefCount( wm );
/* Call process detach notifications */
MODULE_DllProcessDetach( wm, FALSE, NULL );
PE_UnloadLibrary(wm);
TRACE("END\n");
return TRUE;
}
/***********************************************************************
* GetProcAddress (KERNEL32.257)
*/
FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
{
return MODULE_GetProcAddress( hModule, function, TRUE );
}
/***********************************************************************
* MODULE_GetProcAddress (internal)
*/
FARPROC MODULE_GetProcAddress(
HMODULE hModule, /* [in] current module handle */
LPCSTR function, /* [in] function to be looked up */
WIN_BOOL snoop )
{
WINE_MODREF *wm = MODULE32_LookupHMODULE( hModule );
// WINE_MODREF *wm=local_wm;
FARPROC retproc;
if (HIWORD(function))
TRACE_(win32)("(%08lx,%s)\n",(DWORD)hModule,function);
else
TRACE_(win32)("(%08lx,%p)\n",(DWORD)hModule,function);
if (!wm) {
SetLastError(ERROR_INVALID_HANDLE);
return (FARPROC)0;
}
switch (wm->type)
{
case MODULE32_PE:
retproc = PE_FindExportedFunction( wm, function, snoop );
if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND);
return retproc;
case MODULE32_ELF:
retproc = dlsym( wm->module, function);
if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND);
return retproc;
default:
ERR("wine_modref type %d not handled.\n",wm->type);
SetLastError(ERROR_INVALID_HANDLE);
return (FARPROC)0;
}
}
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