393 lines
11 KiB
C
393 lines
11 KiB
C
/*
|
|
* Win32 builtin dlls support
|
|
*
|
|
* Copyright 2000 Alexandre Julliard
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#ifdef HAVE_SYS_MMAN_H
|
|
#include <sys/mman.h>
|
|
#endif
|
|
|
|
#include "winnt.h"
|
|
#include "wine/library.h"
|
|
#include "wine/port.h"
|
|
|
|
#define MAX_DLLS 100
|
|
|
|
static struct
|
|
{
|
|
const IMAGE_NT_HEADERS *nt; /* NT header */
|
|
const char *filename; /* DLL file name */
|
|
} builtin_dlls[MAX_DLLS];
|
|
|
|
static int nb_dlls;
|
|
|
|
static const IMAGE_NT_HEADERS *main_exe;
|
|
|
|
static load_dll_callback_t load_dll_callback;
|
|
|
|
static char **dll_paths;
|
|
static int nb_dll_paths;
|
|
static int dll_path_maxlen;
|
|
static int init_done;
|
|
|
|
|
|
/* build the dll load path from the WINEDLLPATH variable */
|
|
static void build_dll_path(void)
|
|
{
|
|
int count = 0;
|
|
char *p, *path = getenv( "WINEDLLPATH" );
|
|
|
|
init_done = 1;
|
|
if (!path) return;
|
|
path = strdup(path);
|
|
p = path;
|
|
while (*p)
|
|
{
|
|
while (*p == ':') p++;
|
|
if (!*p) break;
|
|
count++;
|
|
while (*p && *p != ':') p++;
|
|
}
|
|
|
|
dll_paths = malloc( count * sizeof(*dll_paths) );
|
|
p = path;
|
|
nb_dll_paths = 0;
|
|
while (*p)
|
|
{
|
|
while (*p == ':') *p++ = 0;
|
|
if (!*p) break;
|
|
dll_paths[nb_dll_paths] = p;
|
|
while (*p && *p != ':') p++;
|
|
if (p - dll_paths[nb_dll_paths] > dll_path_maxlen)
|
|
dll_path_maxlen = p - dll_paths[nb_dll_paths];
|
|
nb_dll_paths++;
|
|
}
|
|
}
|
|
|
|
|
|
/* open a library for a given dll, searching in the dll path
|
|
* 'name' must be the Windows dll name (e.g. "kernel32.dll") */
|
|
static void *dlopen_dll( const char *name, char *error, int errorsize )
|
|
{
|
|
int i, namelen = strlen(name);
|
|
char *buffer, *p, *ext;
|
|
void *ret = NULL;
|
|
|
|
if (!init_done) build_dll_path();
|
|
|
|
buffer = malloc( dll_path_maxlen + namelen + 8 );
|
|
|
|
/* store the name at the end of the buffer, prefixed by /lib and followed by .so */
|
|
p = buffer + dll_path_maxlen;
|
|
memcpy( p, "/lib", 4 );
|
|
p += 4;
|
|
memcpy( p, name, namelen+1 );
|
|
ext = strrchr( p, '.' );
|
|
p += namelen;
|
|
/* check for .dll or .exe extension to remove */
|
|
if (ext && (!strcmp( ext, ".dll" ) || !strcmp( ext, ".exe" ))) p = ext;
|
|
memcpy( p, ".so", 4 );
|
|
|
|
for (i = 0; i < nb_dll_paths; i++)
|
|
{
|
|
int len = strlen(dll_paths[i]);
|
|
char *p = buffer + dll_path_maxlen - len;
|
|
memcpy( p, dll_paths[i], len );
|
|
if ((ret = wine_dlopen( p, RTLD_NOW, error, errorsize ))) break;
|
|
}
|
|
|
|
/* now try the default dlopen search path */
|
|
if (!ret)
|
|
ret = wine_dlopen( buffer + dll_path_maxlen + 1, RTLD_NOW, error, errorsize );
|
|
free( buffer );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* adjust an array of pointers to make them into RVAs */
|
|
static inline void fixup_rva_ptrs( void *array, void *base, int count )
|
|
{
|
|
void **ptr = (void **)array;
|
|
while (count--)
|
|
{
|
|
if (*ptr) *ptr = (void *)((char *)*ptr - (char *)base);
|
|
ptr++;
|
|
}
|
|
}
|
|
|
|
|
|
/* fixup RVAs in the resource directory */
|
|
static void fixup_resources( IMAGE_RESOURCE_DIRECTORY *dir, char *root, void *base )
|
|
{
|
|
IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
|
|
int i;
|
|
|
|
entry = (IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
|
|
for (i = 0; i < dir->NumberOfNamedEntries + dir->NumberOfIdEntries; i++, entry++)
|
|
{
|
|
void *ptr = root + entry->u2.s3.OffsetToDirectory;
|
|
if (entry->u2.s3.DataIsDirectory) fixup_resources( ptr, root, base );
|
|
else
|
|
{
|
|
IMAGE_RESOURCE_DATA_ENTRY *data = ptr;
|
|
fixup_rva_ptrs( &data->OffsetToData, base, 1 );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* map a builtin dll in memory and fixup RVAs */
|
|
static void *map_dll( const IMAGE_NT_HEADERS *nt_descr )
|
|
{
|
|
IMAGE_DATA_DIRECTORY *dir;
|
|
IMAGE_DOS_HEADER *dos;
|
|
IMAGE_NT_HEADERS *nt;
|
|
IMAGE_SECTION_HEADER *sec;
|
|
BYTE *addr, *code_start, *data_start;
|
|
size_t page_size = getpagesize();
|
|
int nb_sections = 2; /* code + data */
|
|
|
|
size_t size = (sizeof(IMAGE_DOS_HEADER)
|
|
+ sizeof(IMAGE_NT_HEADERS)
|
|
+ nb_sections * sizeof(IMAGE_SECTION_HEADER));
|
|
|
|
assert( size <= page_size );
|
|
|
|
if (nt_descr->OptionalHeader.ImageBase)
|
|
{
|
|
addr = wine_anon_mmap( (void *)nt_descr->OptionalHeader.ImageBase,
|
|
page_size, PROT_READ|PROT_WRITE, MAP_FIXED );
|
|
if (addr != (BYTE *)nt_descr->OptionalHeader.ImageBase) return NULL;
|
|
}
|
|
else
|
|
{
|
|
/* this will leak memory; but it should never happen */
|
|
addr = wine_anon_mmap( NULL, page_size, PROT_READ|PROT_WRITE, 0 );
|
|
if (addr == (BYTE *)-1) return NULL;
|
|
}
|
|
|
|
dos = (IMAGE_DOS_HEADER *)addr;
|
|
nt = (IMAGE_NT_HEADERS *)(dos + 1);
|
|
sec = (IMAGE_SECTION_HEADER *)(nt + 1);
|
|
code_start = addr + page_size;
|
|
|
|
/* HACK! */
|
|
data_start = code_start + page_size;
|
|
|
|
/* Build the DOS and NT headers */
|
|
|
|
dos->e_magic = IMAGE_DOS_SIGNATURE;
|
|
dos->e_lfanew = sizeof(*dos);
|
|
|
|
*nt = *nt_descr;
|
|
|
|
nt->FileHeader.NumberOfSections = nb_sections;
|
|
nt->OptionalHeader.SizeOfCode = data_start - code_start;
|
|
nt->OptionalHeader.SizeOfInitializedData = 0;
|
|
nt->OptionalHeader.SizeOfUninitializedData = 0;
|
|
nt->OptionalHeader.ImageBase = (DWORD)addr;
|
|
|
|
fixup_rva_ptrs( &nt->OptionalHeader.AddressOfEntryPoint, addr, 1 );
|
|
|
|
/* Build the code section */
|
|
|
|
strcpy( sec->Name, ".text" );
|
|
sec->SizeOfRawData = data_start - code_start;
|
|
sec->Misc.VirtualSize = sec->SizeOfRawData;
|
|
sec->VirtualAddress = code_start - addr;
|
|
sec->PointerToRawData = code_start - addr;
|
|
sec->Characteristics = (IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ);
|
|
sec++;
|
|
|
|
/* Build the data section */
|
|
|
|
strcpy( sec->Name, ".data" );
|
|
sec->SizeOfRawData = 0;
|
|
sec->Misc.VirtualSize = sec->SizeOfRawData;
|
|
sec->VirtualAddress = data_start - addr;
|
|
sec->PointerToRawData = data_start - addr;
|
|
sec->Characteristics = (IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_READ);
|
|
sec++;
|
|
|
|
/* Build the import directory */
|
|
|
|
dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_IMPORT_DIRECTORY];
|
|
if (dir->Size)
|
|
{
|
|
IMAGE_IMPORT_DESCRIPTOR *imports = (void *)dir->VirtualAddress;
|
|
fixup_rva_ptrs( &dir->VirtualAddress, addr, 1 );
|
|
/* we can fixup everything at once since we only have pointers and 0 values */
|
|
fixup_rva_ptrs( imports, addr, dir->Size / sizeof(void*) );
|
|
}
|
|
|
|
/* Build the resource directory */
|
|
|
|
dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_RESOURCE_DIRECTORY];
|
|
if (dir->Size)
|
|
{
|
|
void *ptr = (void *)dir->VirtualAddress;
|
|
fixup_rva_ptrs( &dir->VirtualAddress, addr, 1 );
|
|
fixup_resources( ptr, ptr, addr );
|
|
}
|
|
|
|
/* Build the export directory */
|
|
|
|
dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
|
|
if (dir->Size)
|
|
{
|
|
IMAGE_EXPORT_DIRECTORY *exports = (void *)dir->VirtualAddress;
|
|
fixup_rva_ptrs( &dir->VirtualAddress, addr, 1 );
|
|
fixup_rva_ptrs( (void *)exports->AddressOfFunctions, addr, exports->NumberOfFunctions );
|
|
fixup_rva_ptrs( (void *)exports->AddressOfNames, addr, exports->NumberOfNames );
|
|
fixup_rva_ptrs( &exports->Name, addr, 1 );
|
|
fixup_rva_ptrs( &exports->AddressOfFunctions, addr, 1 );
|
|
fixup_rva_ptrs( &exports->AddressOfNames, addr, 1 );
|
|
fixup_rva_ptrs( &exports->AddressOfNameOrdinals, addr, 1 );
|
|
}
|
|
return addr;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_dll_register
|
|
*
|
|
* Register a built-in DLL descriptor.
|
|
*/
|
|
void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename )
|
|
{
|
|
if (load_dll_callback) load_dll_callback( map_dll(header), filename );
|
|
else
|
|
{
|
|
if (!(header->FileHeader.Characteristics & IMAGE_FILE_DLL))
|
|
main_exe = header;
|
|
else
|
|
{
|
|
assert( nb_dlls < MAX_DLLS );
|
|
builtin_dlls[nb_dlls].nt = header;
|
|
builtin_dlls[nb_dlls].filename = filename;
|
|
nb_dlls++;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* wine_dll_set_callback
|
|
*
|
|
* Set the callback function for dll loading, and call it
|
|
* for all dlls that were implicitly loaded already.
|
|
*/
|
|
void wine_dll_set_callback( load_dll_callback_t load )
|
|
{
|
|
int i;
|
|
load_dll_callback = load;
|
|
for (i = 0; i < nb_dlls; i++)
|
|
{
|
|
const IMAGE_NT_HEADERS *nt = builtin_dlls[i].nt;
|
|
if (!nt) continue;
|
|
builtin_dlls[i].nt = NULL;
|
|
load_dll_callback( map_dll(nt), builtin_dlls[i].filename );
|
|
}
|
|
nb_dlls = 0;
|
|
if (main_exe) load_dll_callback( map_dll(main_exe), "" );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* wine_dll_load
|
|
*
|
|
* Load a builtin dll.
|
|
*/
|
|
void *wine_dll_load( const char *filename, char *error, int errorsize )
|
|
{
|
|
int i;
|
|
|
|
/* callback must have been set already */
|
|
assert( load_dll_callback );
|
|
|
|
/* check if we have it in the list */
|
|
/* this can happen when initializing pre-loaded dlls in wine_dll_set_callback */
|
|
for (i = 0; i < nb_dlls; i++)
|
|
{
|
|
if (!builtin_dlls[i].nt) continue;
|
|
if (!strcmp( builtin_dlls[i].filename, filename ))
|
|
{
|
|
const IMAGE_NT_HEADERS *nt = builtin_dlls[i].nt;
|
|
builtin_dlls[i].nt = NULL;
|
|
load_dll_callback( map_dll(nt), builtin_dlls[i].filename );
|
|
return (void *)1;
|
|
}
|
|
}
|
|
return dlopen_dll( filename, error, errorsize );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* wine_dll_unload
|
|
*
|
|
* Unload a builtin dll.
|
|
*/
|
|
void wine_dll_unload( void *handle )
|
|
{
|
|
if (handle != (void *)1)
|
|
wine_dlclose( handle, NULL, 0 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* wine_dll_load_main_exe
|
|
*
|
|
* Try to load the .so for the main exe, optionally searching for it in PATH.
|
|
*/
|
|
void *wine_dll_load_main_exe( const char *name, int search_path )
|
|
{
|
|
void *ret = NULL;
|
|
const char *path = NULL;
|
|
if (search_path) path = getenv( "PATH" );
|
|
|
|
if (!path)
|
|
{
|
|
/* no path, try only the specified name */
|
|
ret = wine_dlopen( name, RTLD_NOW, NULL, 0 );
|
|
}
|
|
else
|
|
{
|
|
char buffer[128], *tmp = buffer;
|
|
size_t namelen = strlen(name);
|
|
size_t pathlen = strlen(path);
|
|
|
|
if (namelen + pathlen + 2 > sizeof(buffer)) tmp = malloc( namelen + pathlen + 2 );
|
|
if (tmp)
|
|
{
|
|
char *basename = tmp + pathlen;
|
|
*basename = '/';
|
|
strcpy( basename + 1, name );
|
|
for (;;)
|
|
{
|
|
int len;
|
|
const char *p = strchr( path, ':' );
|
|
if (!p) p = path + strlen(path);
|
|
if ((len = p - path) > 0)
|
|
{
|
|
memcpy( basename - len, path, len );
|
|
if ((ret = wine_dlopen( basename - len, RTLD_NOW, NULL, 0 ))) break;
|
|
}
|
|
if (!*p) break;
|
|
path = p + 1;
|
|
}
|
|
if (tmp != buffer) free( tmp );
|
|
}
|
|
}
|
|
return ret;
|
|
}
|