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Sweden-Number/dlls/ntdll/loadorder.c

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/*
* Dlls load order support
*
* Copyright 1999 Bertho Stultiens
* Copyright 2003 Alexandre Julliard
*
* This library 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.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winreg.h"
#include "winternl.h"
#include "file.h"
#include "module.h"
#include "ntdll_misc.h"
#include "wine/debug.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(module);
#define LOADORDER_ALLOC_CLUSTER 32 /* Allocate with 32 entries at a time */
typedef struct module_loadorder
{
const char *modulename;
enum loadorder_type loadorder[LOADORDER_NTYPES];
} module_loadorder_t;
struct loadorder_list
{
int count;
int alloc;
module_loadorder_t *order;
};
/* default load-order if nothing specified */
/* the list must remain sorted by dll name */
static module_loadorder_t default_order_list[] =
{
{ "display", { LOADORDER_BI, 0, 0 } },
{ "gdi.exe", { LOADORDER_BI, 0, 0 } },
{ "gdi32", { LOADORDER_BI, 0, 0 } },
{ "icmp", { LOADORDER_BI, 0, 0 } },
{ "kernel", { LOADORDER_BI, 0, 0 } },
{ "kernel32", { LOADORDER_BI, 0, 0 } },
{ "keyboard", { LOADORDER_BI, 0, 0 } },
{ "krnl386.exe", { LOADORDER_BI, 0, 0 } },
{ "mmsystem", { LOADORDER_BI, 0, 0 } },
{ "mouse", { LOADORDER_BI, 0, 0 } },
{ "ntdll", { LOADORDER_BI, 0, 0 } },
{ "odbc32", { LOADORDER_BI, 0, 0 } },
{ "system.drv", { LOADORDER_BI, 0, 0 } },
{ "toolhelp", { LOADORDER_BI, 0, 0 } },
{ "ttydrv", { LOADORDER_BI, 0, 0 } },
{ "user.exe", { LOADORDER_BI, 0, 0 } },
{ "user32", { LOADORDER_BI, 0, 0 } },
{ "w32skrnl", { LOADORDER_BI, 0, 0 } },
{ "winaspi", { LOADORDER_BI, 0, 0 } },
{ "winedos", { LOADORDER_BI, 0, 0 } },
{ "wineps", { LOADORDER_BI, 0, 0 } },
{ "wing", { LOADORDER_BI, 0, 0 } },
{ "winmm", { LOADORDER_BI, 0, 0 } },
{ "winsock", { LOADORDER_BI, 0, 0 } },
{ "wnaspi32", { LOADORDER_BI, 0, 0 } },
{ "wow32", { LOADORDER_BI, 0, 0 } },
{ "wprocs", { LOADORDER_BI, 0, 0 } },
{ "ws2_32", { LOADORDER_BI, 0, 0 } },
{ "wsock32", { LOADORDER_BI, 0, 0 } },
{ "x11drv", { LOADORDER_BI, 0, 0 } }
};
static const struct loadorder_list default_list =
{
sizeof(default_order_list)/sizeof(default_order_list[0]),
sizeof(default_order_list)/sizeof(default_order_list[0]),
default_order_list
};
/* default if nothing else specified */
static const enum loadorder_type default_loadorder[LOADORDER_NTYPES] =
{
LOADORDER_BI, LOADORDER_DLL, 0
};
/* default for modules with an explicit path */
static const enum loadorder_type default_path_loadorder[LOADORDER_NTYPES] =
{
LOADORDER_DLL, LOADORDER_BI, 0
};
static int init_done;
static struct loadorder_list env_list;
/***************************************************************************
* cmp_sort_func (internal, static)
*
* Sorting and comparing function used in sort and search of loadorder
* entries.
*/
static int cmp_sort_func(const void *s1, const void *s2)
{
return FILE_strcasecmp(((module_loadorder_t *)s1)->modulename,
((module_loadorder_t *)s2)->modulename);
}
/***************************************************************************
* get_basename
*
* Return the base name of a file name (i.e. remove the path components).
*/
static const char *get_basename( const char *name )
{
const char *ptr;
if (name[0] && name[1] == ':') name += 2; /* strip drive specification */
if ((ptr = strrchr( name, '\\' ))) name = ptr + 1;
if ((ptr = strrchr( name, '/' ))) name = ptr + 1;
return name;
}
/***************************************************************************
* debugstr_loadorder
*
* Return a loadorder in printable form.
*/
static const char *debugstr_loadorder( enum loadorder_type lo[] )
{
int i;
char buffer[LOADORDER_NTYPES*3+1];
buffer[0] = 0;
for(i = 0; i < LOADORDER_NTYPES; i++)
{
if (lo[i] == LOADORDER_INVALID) break;
switch(lo[i])
{
case LOADORDER_DLL: strcat( buffer, "n," ); break;
case LOADORDER_BI: strcat( buffer, "b," ); break;
default: strcat( buffer, "?," ); break;
}
}
if (buffer[0]) buffer[strlen(buffer)-1] = 0;
return debugstr_a(buffer);
}
/***************************************************************************
* append_load_order
*
* Append a load order to the list if necessary.
*/
static void append_load_order(enum loadorder_type lo[], enum loadorder_type append)
{
int i;
for (i = 0; i < LOADORDER_NTYPES; i++)
{
if (lo[i] == LOADORDER_INVALID) /* append it here */
{
lo[i++] = append;
lo[i] = LOADORDER_INVALID;
return;
}
if (lo[i] == append) return; /* already in the list */
}
assert(0); /* cannot get here */
}
/***************************************************************************
* parse_load_order
*
* Parses the loadorder options from the configuration and puts it into
* a structure.
*/
static void parse_load_order( const char *order, enum loadorder_type lo[] )
{
lo[0] = LOADORDER_INVALID;
while (*order)
{
order += strspn( order, ", \t" );
switch(*order)
{
case 'N': /* Native */
case 'n':
append_load_order( lo, LOADORDER_DLL );
break;
case 'B': /* Builtin */
case 'b':
append_load_order( lo, LOADORDER_BI );
break;
}
order += strcspn( order, ", \t" );
}
}
/***************************************************************************
* add_load_order
*
* Adds an entry in the list of environment overrides.
*/
static void add_load_order( const module_loadorder_t *plo )
{
int i;
for(i = 0; i < env_list.count; i++)
{
if(!cmp_sort_func(plo, &env_list.order[i] ))
{
/* replace existing option */
memcpy( env_list.order[i].loadorder, plo->loadorder, sizeof(plo->loadorder));
return;
}
}
if (i >= env_list.alloc)
{
/* No space in current array, make it larger */
env_list.alloc += LOADORDER_ALLOC_CLUSTER;
if (env_list.order)
env_list.order = RtlReAllocateHeap(GetProcessHeap(), 0, env_list.order,
env_list.alloc * sizeof(module_loadorder_t));
else
env_list.order = RtlAllocateHeap(GetProcessHeap(), 0,
env_list.alloc * sizeof(module_loadorder_t));
if(!env_list.order)
{
MESSAGE("Virtual memory exhausted\n");
exit(1);
}
}
memcpy(env_list.order[i].loadorder, plo->loadorder, sizeof(plo->loadorder));
env_list.order[i].modulename = RtlAllocateHeap(GetProcessHeap(), 0, strlen(plo->modulename)+1);
strcpy( (char *)env_list.order[i].modulename, plo->modulename );
env_list.count++;
}
/***************************************************************************
* add_load_order_set
*
* Adds a set of entries in the list of command-line overrides from the key parameter.
*/
static void add_load_order_set( char *entry )
{
module_loadorder_t ldo;
char *end = strchr( entry, '=' );
if (!end) return;
*end++ = 0;
parse_load_order( end, ldo.loadorder );
while (*entry)
{
entry += strspn( entry, ", \t" );
end = entry + strcspn( entry, ", \t" );
if (*end) *end++ = 0;
if (*entry)
{
char *ext = strrchr(entry, '.');
if(ext && !FILE_strcasecmp( ext, ".dll" )) *ext = 0;
ldo.modulename = entry;
add_load_order( &ldo );
entry = end;
}
}
}
/***************************************************************************
* init_load_order
*/
static void init_load_order(void)
{
const char *order = getenv( "WINEDLLOVERRIDES" );
char *str, *entry, *next;
init_done = 1;
if (!order) return;
if (!strcmp( order, "help" ))
{
MESSAGE( "Syntax:\n"
" WINEDLLOVERRIDES=\"entry;entry;entry...\"\n"
" where each entry is of the form:\n"
" module[,module...]={native|builtin}[,{b|n}]\n"
"\n"
" Only the first letter of the override (native or builtin)\n"
" is significant.\n\n"
"Example:\n"
" WINEDLLOVERRIDES=\"comdlg32,commdlg=n,b;shell,shell32=b\"\n" );
exit(0);
}
str = RtlAllocateHeap( GetProcessHeap(), 0, strlen(order)+1 );
strcpy( str, order );
entry = str;
while (*entry)
{
while (*entry && *entry == ';') entry++;
if (!*entry) break;
next = strchr( entry, ';' );
if (next) *next++ = 0;
else next = entry + strlen(entry);
add_load_order_set( entry );
entry = next;
}
RtlFreeHeap( GetProcessHeap(), 0, str );
/* sort the array for quick lookup */
if (env_list.count)
qsort(env_list.order, env_list.count, sizeof(env_list.order[0]), cmp_sort_func);
}
/***************************************************************************
* get_list_load_order
*
* Get the load order for a given module from the command-line or
* default lists.
*/
static BOOL get_list_load_order( const char *module, const struct loadorder_list *list,
enum loadorder_type lo[] )
{
module_loadorder_t tmp, *res = NULL;
tmp.modulename = module;
/* some bsearch implementations (Solaris) are buggy when the number of items is 0 */
if (list->count && (res = bsearch(&tmp, list->order, list->count, sizeof(list->order[0]), cmp_sort_func)))
memcpy( lo, res->loadorder, sizeof(res->loadorder) );
return (res != NULL);
}
/***************************************************************************
* open_app_key
*
* Open the registry key to the app-specific DllOverrides list.
*/
static HKEY open_app_key( const WCHAR *app_name, const char *module )
{
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
HKEY hkey;
WCHAR *str;
static const WCHAR AppDefaultsW[] = {'M','a','c','h','i','n','e','\\',
'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\',
'W','i','n','e','\\',
'C','o','n','f','i','g','\\',
'A','p','p','D','e','f','a','u','l','t','s','\\',0};
static const WCHAR DllOverridesW[] = {'\\','D','l','l','O','v','e','r','r','i','d','e','s',0};
str = RtlAllocateHeap( GetProcessHeap(), 0,
sizeof(AppDefaultsW) + sizeof(DllOverridesW) +
strlenW(app_name) * sizeof(WCHAR) );
if (!str) return 0;
strcpyW( str, AppDefaultsW );
strcatW( str, app_name );
strcatW( str, DllOverridesW );
TRACE( "searching '%s' in %s\n", module, debugstr_w(str) );
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &nameW, str );
if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr )) hkey = 0;
RtlFreeHeap( GetProcessHeap(), 0, str );
return hkey;
}
/***************************************************************************
* get_registry_value
*
* Load the registry loadorder value for a given module.
*/
static BOOL get_registry_value( HKEY hkey, const char *module, enum loadorder_type lo[] )
{
UNICODE_STRING valueW;
char buffer[80];
DWORD count;
BOOL ret;
RtlCreateUnicodeStringFromAsciiz( &valueW, module );
if ((ret = !NtQueryValueKey( hkey, &valueW, KeyValuePartialInformation,
buffer, sizeof(buffer), &count )))
{
int i, n = 0;
WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)buffer)->Data;
while (*str)
{
enum loadorder_type type = LOADORDER_INVALID;
while (*str == ',' || isspaceW(*str)) str++;
if (!*str) break;
switch(tolowerW(*str))
{
case 'n': type = LOADORDER_DLL; break;
case 'b': type = LOADORDER_BI; break;
case 's': break; /* no longer supported, ignore */
case 0: break; /* end of string */
default:
ERR("Invalid load order module-type %s, ignored\n", debugstr_w(str));
break;
}
if (type != LOADORDER_INVALID)
{
for (i = 0; i < n; i++) if (lo[i] == type) break; /* already specified */
if (i == n) lo[n++] = type;
}
while (*str && *str != ',' && !isspaceW(*str)) str++;
}
lo[n] = LOADORDER_INVALID;
}
RtlFreeUnicodeString( &valueW );
return ret;
}
/***************************************************************************
* MODULE_GetBuiltinPath
*
* Get the path of a builtin module when the native file does not exist.
*/
BOOL MODULE_GetBuiltinPath( const char *libname, const char *ext, char *filename, UINT size )
{
char *p;
BOOL ret = FALSE;
UINT len = GetSystemDirectoryA( filename, size );
if (FILE_contains_path( libname ))
{
char *tmp;
/* if the library name contains a path and can not be found,
* return an error.
* exception: if the path is the system directory, proceed,
* so that modules which are not PE modules can be loaded.
* If the library name does not contain a path and can not
* be found, assume the system directory is meant */
if (strlen(libname) >= size) return FALSE; /* too long */
if (strchr( libname, '/' )) /* need to convert slashes */
{
if (!(tmp = RtlAllocateHeap( GetProcessHeap(), 0, strlen(libname)+1 ))) return FALSE;
strcpy( tmp, libname );
for (p = tmp; *p; p++) if (*p == '/') *p = '\\';
}
else tmp = (char *)libname;
if (!FILE_strncasecmp( filename, tmp, len ) && tmp[len] == '\\')
{
strcpy( filename, tmp );
ret = TRUE;
}
if (tmp != libname) RtlFreeHeap( GetProcessHeap(), 0, tmp );
if (!ret) return FALSE;
}
else
{
if (strlen(libname) >= size - len - 1) return FALSE;
filename[len] = '\\';
strcpy( filename+len+1, libname );
}
/* if the filename doesn't have an extension, append the default */
if (!(p = strrchr( filename, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
{
if (strlen(filename) + strlen(ext) >= size) return FALSE;
strcat( filename, ext );
}
return TRUE;
}
/***************************************************************************
* MODULE_GetLoadOrder (internal)
*
* Locate the loadorder of a module.
* Any path is stripped from the path-argument and so are the extension
* '.dll' and '.exe'. A lookup in the table can yield an override for
* the specific dll. Otherwise the default load order is returned.
*
* FIXME: 'path' should be Unicode too.
*/
void MODULE_GetLoadOrder( enum loadorder_type loadorder[], const WCHAR *app_name,
const char *path, BOOL win32 )
{
static const WCHAR DllOverridesW[] = {'M','a','c','h','i','n','e','\\',
'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\',
'W','i','n','e','\\',
'C','o','n','f','i','g','\\',
'D','l','l','O','v','e','r','r','i','d','e','s',0};
static HKEY std_key = (HKEY)-1; /* key to standard section, cached */
HKEY app_key = 0;
char *module, *basename;
int len;
if (!init_done) init_load_order();
TRACE("looking for %s\n", path);
loadorder[0] = LOADORDER_INVALID; /* in case something bad happens below */
/* Strip path information if the module resides in the system directory
* (path is already stripped by caller for 16-bit modules)
*/
if (win32)
{
char sysdir[MAX_PATH+1];
if (!GetSystemDirectoryA( sysdir, MAX_PATH )) return;
if (!FILE_strncasecmp( sysdir, path, strlen (sysdir) ))
{
path += strlen(sysdir);
while (*path == '\\' || *path == '/') path++;
}
}
if (!(len = strlen(path))) return;
if (!(module = RtlAllocateHeap( GetProcessHeap(), 0, len + 2 ))) return;
strcpy( module+1, path ); /* reserve module[0] for the wildcard char */
if (len >= 4)
{
char *ext = module + 1 + len - 4;
if (!FILE_strcasecmp( ext, ".dll" )) *ext = 0;
}
/* check environment variable first */
if (get_list_load_order( module+1, &env_list, loadorder ))
{
TRACE( "got environment %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
/* then explicit module name in AppDefaults */
if (app_name)
{
app_key = open_app_key( app_name, module+1 );
if (app_key && get_registry_value( app_key, module+1, loadorder ))
{
TRACE( "got app defaults %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
}
/* then explicit module name in standard section */
if (std_key == (HKEY)-1)
{
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &nameW, DllOverridesW );
if (NtOpenKey( &std_key, KEY_ALL_ACCESS, &attr )) std_key = 0;
}
if (std_key && get_registry_value( std_key, module+1, loadorder ))
{
TRACE( "got standard entry %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
/* then module basename preceded by '*' in AppDefaults */
basename = (char *)get_basename( module+1 );
basename[-1] = '*';
if (app_key && get_registry_value( app_key, basename-1, loadorder ))
{
TRACE( "got app defaults basename %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
/* then module name preceded by '*' in standard section */
if (std_key && get_registry_value( std_key, basename-1, loadorder ))
{
TRACE( "got standard base name %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
/* then base name matching compiled-in defaults */
if (get_list_load_order( basename, &default_list, loadorder ))
{
TRACE( "got compiled-in default %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
if (basename == module+1)
{
/* then wildcard entry in AppDefaults (only if no explicit path) */
if (app_key && get_registry_value( app_key, "*", loadorder ))
{
TRACE( "got app defaults wildcard %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
/* then wildcard entry in standard section (only if no explicit path) */
if (std_key && get_registry_value( std_key, "*", loadorder ))
{
TRACE( "got standard wildcard %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
goto done;
}
/* and last the hard-coded default */
memcpy( loadorder, default_loadorder, sizeof(default_loadorder) );
TRACE( "got hardcoded default %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
}
else /* module contains an explicit path */
{
memcpy( loadorder, default_path_loadorder, sizeof(default_path_loadorder) );
TRACE( "got hardcoded path default %s for %s\n",
debugstr_loadorder(loadorder), debugstr_a(path) );
}
done:
if (app_key) NtClose( app_key );
RtlFreeHeap( GetProcessHeap(), 0, module );
}
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