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server: Fix constraints on the length of NT object names. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2016-01-19 15:52:35 +09:00
parent b99d1525de
commit cd6e9c38e4
5 changed files with 215 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
dlls/ntdll/reg.c
View File

@ -42,8 +42,6 @@
WINE_DEFAULT_DEBUG_CHANNEL(reg); WINE_DEFAULT_DEBUG_CHANNEL(reg);
/* maximum length of a key name in bytes (without terminating null) */
#define MAX_NAME_LENGTH (255 * sizeof(WCHAR))
/* maximum length of a value name in bytes (without terminating null) */ /* maximum length of a value name in bytes (without terminating null) */
#define MAX_VALUE_LENGTH (16383 * sizeof(WCHAR)) #define MAX_VALUE_LENGTH (16383 * sizeof(WCHAR))
@ -61,7 +59,6 @@ NTSTATUS WINAPI NtCreateKey( PHANDLE retkey, ACCESS_MASK access, const OBJECT_AT
if (!retkey || !attr) return STATUS_ACCESS_VIOLATION; if (!retkey || !attr) return STATUS_ACCESS_VIOLATION;
if (attr->Length > sizeof(OBJECT_ATTRIBUTES)) return STATUS_INVALID_PARAMETER; if (attr->Length > sizeof(OBJECT_ATTRIBUTES)) return STATUS_INVALID_PARAMETER;
if (attr->ObjectName->Length > MAX_NAME_LENGTH) return STATUS_BUFFER_OVERFLOW;
TRACE( "(%p,%s,%s,%x,%x,%p)\n", attr->RootDirectory, debugstr_us(attr->ObjectName), TRACE( "(%p,%s,%s,%x,%x,%p)\n", attr->RootDirectory, debugstr_us(attr->ObjectName),
debugstr_us(class), options, access, retkey ); debugstr_us(class), options, access, retkey );
@ -130,24 +127,20 @@ NTSTATUS WINAPI RtlpNtCreateKey( PHANDLE retkey, ACCESS_MASK access, const OBJEC
NTSTATUS WINAPI NtOpenKeyEx( PHANDLE retkey, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr, ULONG options ) NTSTATUS WINAPI NtOpenKeyEx( PHANDLE retkey, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr, ULONG options )
{ {
NTSTATUS ret; NTSTATUS ret;
DWORD len;
if (!retkey || !attr) return STATUS_ACCESS_VIOLATION; if (!retkey || !attr) return STATUS_ACCESS_VIOLATION;
if (attr->Length > sizeof(OBJECT_ATTRIBUTES)) return STATUS_INVALID_PARAMETER; if (attr->Length > sizeof(OBJECT_ATTRIBUTES)) return STATUS_INVALID_PARAMETER;
len = attr->ObjectName->Length;
TRACE( "(%p,%s,%x,%p)\n", attr->RootDirectory, TRACE( "(%p,%s,%x,%p)\n", attr->RootDirectory,
debugstr_us(attr->ObjectName), access, retkey ); debugstr_us(attr->ObjectName), access, retkey );
if (options) if (options)
FIXME("options %x not implemented\n", options); FIXME("options %x not implemented\n", options);
if (len > MAX_NAME_LENGTH) return STATUS_BUFFER_OVERFLOW;
SERVER_START_REQ( open_key ) SERVER_START_REQ( open_key )
{ {
req->parent = wine_server_obj_handle( attr->RootDirectory ); req->parent = wine_server_obj_handle( attr->RootDirectory );
req->access = access; req->access = access;
req->attributes = attr->Attributes; req->attributes = attr->Attributes;
wine_server_add_data( req, attr->ObjectName->Buffer, len ); wine_server_add_data( req, attr->ObjectName->Buffer, attr->ObjectName->Length );
ret = wine_server_call( req ); ret = wine_server_call( req );
*retkey = wine_server_ptr_handle( reply->hkey ); *retkey = wine_server_ptr_handle( reply->hkey );
} }

6
dlls/ntdll/sync.c
View File

@ -107,8 +107,8 @@ NTSTATUS alloc_object_attributes( const OBJECT_ATTRIBUTES *attr, struct object_a
if (attr->ObjectName) if (attr->ObjectName)
{ {
if (attr->ObjectName->Length >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG; if (attr->ObjectName->Length & (sizeof(WCHAR) - 1)) return STATUS_OBJECT_NAME_INVALID;
len += attr->ObjectName->Length & ~(sizeof(WCHAR) - 1); len += attr->ObjectName->Length;
} }
*ret = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, len ); *ret = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, len );
@ -142,7 +142,7 @@ NTSTATUS alloc_object_attributes( const OBJECT_ATTRIBUTES *attr, struct object_a
if (attr->ObjectName) if (attr->ObjectName)
{ {
unsigned char *ptr = (unsigned char *)(*ret + 1) + (*ret)->sd_len; unsigned char *ptr = (unsigned char *)(*ret + 1) + (*ret)->sd_len;
(*ret)->name_len = attr->ObjectName->Length & ~(sizeof(WCHAR) - 1); (*ret)->name_len = attr->ObjectName->Length;
memcpy( ptr, attr->ObjectName->Buffer, (*ret)->name_len ); memcpy( ptr, attr->ObjectName->Buffer, (*ret)->name_len );
} }

203
dlls/ntdll/tests/om.c
View File

@ -33,6 +33,12 @@ static NTSTATUS (WINAPI *pNtCreateEvent) ( PHANDLE, ACCESS_MASK, const POBJECT_A
static NTSTATUS (WINAPI *pNtOpenEvent) ( PHANDLE, ACCESS_MASK, const POBJECT_ATTRIBUTES); static NTSTATUS (WINAPI *pNtOpenEvent) ( PHANDLE, ACCESS_MASK, const POBJECT_ATTRIBUTES);
static NTSTATUS (WINAPI *pNtPulseEvent) ( HANDLE, PULONG ); static NTSTATUS (WINAPI *pNtPulseEvent) ( HANDLE, PULONG );
static NTSTATUS (WINAPI *pNtQueryEvent) ( HANDLE, EVENT_INFORMATION_CLASS, PVOID, ULONG, PULONG ); static NTSTATUS (WINAPI *pNtQueryEvent) ( HANDLE, EVENT_INFORMATION_CLASS, PVOID, ULONG, PULONG );
static NTSTATUS (WINAPI *pNtCreateJobObject)( PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES );
static NTSTATUS (WINAPI *pNtCreateKey)( PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES, ULONG,
const UNICODE_STRING *, ULONG, PULONG );
static NTSTATUS (WINAPI *pNtDeleteKey)( HANDLE );
static NTSTATUS (WINAPI *pNtCreateMailslotFile)( PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES, PIO_STATUS_BLOCK,
ULONG, ULONG, ULONG, PLARGE_INTEGER );
static NTSTATUS (WINAPI *pNtCreateMutant)( PHANDLE, ACCESS_MASK, const POBJECT_ATTRIBUTES, BOOLEAN ); static NTSTATUS (WINAPI *pNtCreateMutant)( PHANDLE, ACCESS_MASK, const POBJECT_ATTRIBUTES, BOOLEAN );
static NTSTATUS (WINAPI *pNtOpenMutant) ( PHANDLE, ACCESS_MASK, const POBJECT_ATTRIBUTES ); static NTSTATUS (WINAPI *pNtOpenMutant) ( PHANDLE, ACCESS_MASK, const POBJECT_ATTRIBUTES );
static NTSTATUS (WINAPI *pNtCreateSemaphore)( PHANDLE, ACCESS_MASK,const POBJECT_ATTRIBUTES,LONG,LONG ); static NTSTATUS (WINAPI *pNtCreateSemaphore)( PHANDLE, ACCESS_MASK,const POBJECT_ATTRIBUTES,LONG,LONG );
@ -356,6 +362,198 @@ static void test_name_collisions(void)
pNtClose(dir); pNtClose(dir);
} }
static void test_name_limits(void)
{
static const WCHAR pipeW[] = {'\\','D','e','v','i','c','e','\\','N','a','m','e','d','P','i','p','e','\\'};
static const WCHAR mailslotW[] = {'\\','D','e','v','i','c','e','\\','M','a','i','l','S','l','o','t','\\'};
static const WCHAR registryW[] = {'\\','R','E','G','I','S','T','R','Y','\\','M','a','c','h','i','n','e','\\','S','O','F','T','W','A','R','E','\\','M','i','c','r','o','s','o','f','t','\\'};
OBJECT_ATTRIBUTES attr;
IO_STATUS_BLOCK iosb;
LARGE_INTEGER size, timeout;
UNICODE_STRING str, target;
NTSTATUS status;
HANDLE ret;
DWORD i;
InitializeObjectAttributes( &attr, &str, 0, 0, NULL );
str.Buffer = HeapAlloc( GetProcessHeap(), 0, 65536 + sizeof(registryW));
str.MaximumLength = 65534;
for (i = 0; i < 65536 / sizeof(WCHAR); i++) str.Buffer[i] = 'a';
if (!(attr.RootDirectory = get_base_dir()))
{
win_skip( "couldn't find the BaseNamedObjects dir\n" );
return;
}
str.Length = 67;
status = pNtCreateMutant( &ret, GENERIC_ALL, &attr, FALSE );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateMutant failed %x\n", str.Length, status );
status = pNtCreateSemaphore( &ret, GENERIC_ALL, &attr, 1, 2 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateSemaphore failed %x\n", str.Length, status );
status = pNtCreateEvent( &ret, GENERIC_ALL, &attr, 1, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateEvent failed %x\n", str.Length, status );
status = pNtCreateKeyedEvent( &ret, GENERIC_ALL, &attr, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateKeyedEvent failed %x\n", str.Length, status );
status = pNtCreateTimer( &ret, GENERIC_ALL, &attr, NotificationTimer );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateTimer failed %x\n", str.Length, status );
status = pNtCreateIoCompletion( &ret, GENERIC_ALL, &attr, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateCompletion failed %x\n", str.Length, status );
status = pNtCreateJobObject( &ret, GENERIC_ALL, &attr );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateJobObject failed %x\n", str.Length, status );
status = pNtCreateDirectoryObject( &ret, GENERIC_ALL, &attr );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateDirectoryObject failed %x\n", str.Length, status );
pRtlCreateUnicodeStringFromAsciiz( &target, "\\DosDevices" );
status = pNtCreateSymbolicLinkObject( &ret, GENERIC_ALL, &attr, &target );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateSymbolicLinkObject failed %x\n", str.Length, status );
size.QuadPart = 4096;
status = pNtCreateSection( &ret, SECTION_MAP_WRITE, &attr, &size, PAGE_READWRITE, SEC_COMMIT, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateSection failed %x\n", str.Length, status );
str.Length = 65532;
status = pNtCreateMutant( &ret, GENERIC_ALL, &attr, FALSE );
ok( status == STATUS_SUCCESS, "%u: NtCreateMutant failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateSemaphore( &ret, GENERIC_ALL, &attr, 1, 2 );
ok( status == STATUS_SUCCESS, "%u: NtCreateSemaphore failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateEvent( &ret, GENERIC_ALL, &attr, 1, 0 );
ok( status == STATUS_SUCCESS, "%u: NtCreateEvent failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateKeyedEvent( &ret, GENERIC_ALL, &attr, 0 );
ok( status == STATUS_SUCCESS, "%u: NtCreateKeyedEvent failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateTimer( &ret, GENERIC_ALL, &attr, NotificationTimer );
ok( status == STATUS_SUCCESS, "%u: NtCreateTimer failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateIoCompletion( &ret, GENERIC_ALL, &attr, 0 );
ok( status == STATUS_SUCCESS, "%u: NtCreateCompletion failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateJobObject( &ret, GENERIC_ALL, &attr );
ok( status == STATUS_SUCCESS, "%u: NtCreateJobObject failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateDirectoryObject( &ret, GENERIC_ALL, &attr );
ok( status == STATUS_SUCCESS, "%u: NtCreateDirectoryObject failed %x\n", str.Length, status );
pNtClose( ret );
status = pNtCreateSymbolicLinkObject( &ret, GENERIC_ALL, &attr, &target );
ok( status == STATUS_SUCCESS, "%u: NtCreateSymbolicLinkObject failed %x\n", str.Length, status );
pNtClose( ret );
size.QuadPart = 4096;
status = pNtCreateSection( &ret, SECTION_MAP_WRITE, &attr, &size, PAGE_READWRITE, SEC_COMMIT, 0 );
ok( status == STATUS_SUCCESS, "%u: NtCreateSection failed %x\n", str.Length, status );
pNtClose( ret );
str.Length = 65534;
status = pNtCreateMutant( &ret, GENERIC_ALL, &attr, FALSE );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateMutant failed %x\n", str.Length, status );
status = pNtCreateSemaphore( &ret, GENERIC_ALL, &attr, 1, 2 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateSemaphore failed %x\n", str.Length, status );
status = pNtCreateEvent( &ret, GENERIC_ALL, &attr, 1, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateEvent failed %x\n", str.Length, status );
status = pNtCreateKeyedEvent( &ret, GENERIC_ALL, &attr, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateKeyedEvent failed %x\n", str.Length, status );
status = pNtCreateTimer( &ret, GENERIC_ALL, &attr, NotificationTimer );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateTimer failed %x\n", str.Length, status );
status = pNtCreateIoCompletion( &ret, GENERIC_ALL, &attr, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateCompletion failed %x\n", str.Length, status );
status = pNtCreateJobObject( &ret, GENERIC_ALL, &attr );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateJobObject failed %x\n", str.Length, status );
status = pNtCreateDirectoryObject( &ret, GENERIC_ALL, &attr );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateDirectoryObject failed %x\n", str.Length, status );
status = pNtCreateSymbolicLinkObject( &ret, GENERIC_ALL, &attr, &target );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateSymbolicLinkObject failed %x\n", str.Length, status );
size.QuadPart = 4096;
status = pNtCreateSection( &ret, SECTION_MAP_WRITE, &attr, &size, PAGE_READWRITE, SEC_COMMIT, 0 );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateSection failed %x\n", str.Length, status );
/* named pipes */
memcpy( str.Buffer, pipeW, sizeof(pipeW) );
for (i = 0; i < 65536 / sizeof(WCHAR); i++) str.Buffer[i + sizeof(pipeW)/sizeof(WCHAR)] = 'a';
str.Length = 67;
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
timeout.QuadPart = -10000;
status = pNtCreateNamedPipeFile( &ret, GENERIC_ALL, &attr, &iosb, FILE_SHARE_READ|FILE_SHARE_WRITE,
FILE_CREATE, FILE_PIPE_FULL_DUPLEX, 0, 0, 0, 1, 256, 256, &timeout );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateNamedPipeFile failed %x\n", str.Length, status );
str.Length = 65532;
status = pNtCreateNamedPipeFile( &ret, GENERIC_ALL, &attr, &iosb, FILE_SHARE_READ|FILE_SHARE_WRITE,
FILE_CREATE, FILE_PIPE_FULL_DUPLEX, 0, 0, 0, 1, 256, 256, &timeout );
ok( status == STATUS_SUCCESS, "%u: NtCreateNamedPipeFile failed %x\n", str.Length, status );
pNtClose( ret );
str.Length = 65534;
status = pNtCreateNamedPipeFile( &ret, GENERIC_ALL, &attr, &iosb, FILE_SHARE_READ|FILE_SHARE_WRITE,
FILE_CREATE, FILE_PIPE_FULL_DUPLEX, 0, 0, 0, 1, 256, 256, &timeout );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateNamedPipeFile failed %x\n", str.Length, status );
/* mailslots */
memcpy( str.Buffer, mailslotW, sizeof(mailslotW) );
for (i = 0; i < 65536 / sizeof(WCHAR); i++) str.Buffer[i + sizeof(mailslotW)/sizeof(WCHAR)] = 'a';
str.Length = 67;
status = pNtCreateMailslotFile( &ret, GENERIC_ALL, &attr, &iosb, 0, 0, 0, NULL );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateMailslotFile failed %x\n", str.Length, status );
str.Length = 65532;
status = pNtCreateMailslotFile( &ret, GENERIC_ALL, &attr, &iosb, 0, 0, 0, NULL );
ok( status == STATUS_SUCCESS, "%u: NtCreateMailslotFile failed %x\n", str.Length, status );
pNtClose( ret );
str.Length = 65534;
status = pNtCreateMailslotFile( &ret, GENERIC_ALL, &attr, &iosb, 0, 0, 0, NULL );
ok( status == STATUS_OBJECT_NAME_INVALID, "%u: NtCreateMailslotFile failed %x\n", str.Length, status );
/* registry keys */
memcpy( str.Buffer, registryW, sizeof(registryW) );
for (i = 0; i < 65536 / sizeof(WCHAR); i++) str.Buffer[i + sizeof(registryW)/sizeof(WCHAR)] = 'a';
str.Length = sizeof(registryW) + 250 * sizeof(WCHAR) + 1;
status = pNtCreateKey( &ret, GENERIC_ALL, &attr, 0, NULL, 0, NULL );
ok( status == STATUS_OBJECT_NAME_INVALID ||
status == STATUS_INVALID_PARAMETER ||
broken( status == STATUS_SUCCESS ), /* wow64 */
"%u: NtCreateKey failed %x\n", str.Length, status );
if (!status)
{
pNtDeleteKey( ret );
pNtClose( ret );
}
str.Length = sizeof(registryW) + 256 * sizeof(WCHAR);
status = pNtCreateKey( &ret, GENERIC_ALL, &attr, 0, NULL, 0, NULL );
ok( status == STATUS_SUCCESS, "%u: NtCreateKey failed %x\n", str.Length, status );
pNtDeleteKey( ret );
pNtClose( ret );
str.Length++;
status = pNtCreateKey( &ret, GENERIC_ALL, &attr, 0, NULL, 0, NULL );
ok( status == STATUS_OBJECT_NAME_INVALID ||
status == STATUS_INVALID_PARAMETER ||
broken( status == STATUS_SUCCESS ), /* win7 */
"%u: NtCreateKey failed %x\n", str.Length, status );
if (!status)
{
pNtDeleteKey( ret );
pNtClose( ret );
}
str.Length++;
status = pNtCreateKey( &ret, GENERIC_ALL, &attr, 0, NULL, 0, NULL );
ok( status == STATUS_INVALID_PARAMETER, "%u: NtCreateKey failed %x\n", str.Length, status );
str.Length = 2000;
status = pNtCreateKey( &ret, GENERIC_ALL, &attr, 0, NULL, 0, NULL );
ok( status == STATUS_INVALID_PARAMETER, "%u: NtCreateKey failed %x\n", str.Length, status );
/* some Windows versions change the error past 2050 chars, others past 4066 chars, some don't */
str.Length = 5000;
status = pNtCreateKey( &ret, GENERIC_ALL, &attr, 0, NULL, 0, NULL );
ok( status == STATUS_BUFFER_OVERFLOW ||
status == STATUS_BUFFER_TOO_SMALL ||
status == STATUS_INVALID_PARAMETER,
"%u: NtCreateKey failed %x\n", str.Length, status );
str.Length = 65534;
status = pNtCreateKey( &ret, GENERIC_ALL, &attr, 0, NULL, 0, NULL );
ok( status == STATUS_OBJECT_NAME_INVALID ||
status == STATUS_BUFFER_OVERFLOW ||
status == STATUS_BUFFER_TOO_SMALL,
"%u: NtCreateKey failed %x\n", str.Length, status );
pRtlFreeUnicodeString( &str );
pRtlFreeUnicodeString( &target );
}
static void test_directory(void) static void test_directory(void)
{ {
NTSTATUS status; NTSTATUS status;
@ -1206,6 +1404,10 @@ START_TEST(om)
pRtlCreateUnicodeStringFromAsciiz = (void *)GetProcAddress(hntdll, "RtlCreateUnicodeStringFromAsciiz"); pRtlCreateUnicodeStringFromAsciiz = (void *)GetProcAddress(hntdll, "RtlCreateUnicodeStringFromAsciiz");
pRtlFreeUnicodeString = (void *)GetProcAddress(hntdll, "RtlFreeUnicodeString"); pRtlFreeUnicodeString = (void *)GetProcAddress(hntdll, "RtlFreeUnicodeString");
pNtCreateEvent = (void *)GetProcAddress(hntdll, "NtCreateEvent"); pNtCreateEvent = (void *)GetProcAddress(hntdll, "NtCreateEvent");
pNtCreateJobObject = (void *)GetProcAddress(hntdll, "NtCreateJobObject");
pNtCreateKey = (void *)GetProcAddress(hntdll, "NtCreateKey");
pNtDeleteKey = (void *)GetProcAddress(hntdll, "NtDeleteKey");
pNtCreateMailslotFile = (void *)GetProcAddress(hntdll, "NtCreateMailslotFile");
pNtCreateMutant = (void *)GetProcAddress(hntdll, "NtCreateMutant"); pNtCreateMutant = (void *)GetProcAddress(hntdll, "NtCreateMutant");
pNtOpenEvent = (void *)GetProcAddress(hntdll, "NtOpenEvent"); pNtOpenEvent = (void *)GetProcAddress(hntdll, "NtOpenEvent");
pNtQueryEvent = (void *)GetProcAddress(hntdll, "NtQueryEvent"); pNtQueryEvent = (void *)GetProcAddress(hntdll, "NtQueryEvent");
@ -1234,6 +1436,7 @@ START_TEST(om)
test_case_sensitive(); test_case_sensitive();
test_namespace_pipe(); test_namespace_pipe();
test_name_collisions(); test_name_collisions();
test_name_limits();
test_directory(); test_directory();
test_symboliclink(); test_symboliclink();
test_query_object(); test_query_object();

4
server/registry.c
View File

@ -101,7 +101,7 @@ struct key_value
#define MIN_SUBKEYS 8 /* min. number of allocated subkeys per key */ #define MIN_SUBKEYS 8 /* min. number of allocated subkeys per key */
#define MIN_VALUES 8 /* min. number of allocated values per key */ #define MIN_VALUES 8 /* min. number of allocated values per key */
#define MAX_NAME_LEN 255 /* max. length of a key name */ #define MAX_NAME_LEN 256 /* max. length of a key name */
#define MAX_VALUE_LEN 16383 /* max. length of a value name */ #define MAX_VALUE_LEN 16383 /* max. length of a value name */
/* the root of the registry tree */ /* the root of the registry tree */
@ -575,7 +575,7 @@ static struct key *alloc_subkey( struct key *parent, const struct unicode_str *n
if (name->len > MAX_NAME_LEN * sizeof(WCHAR)) if (name->len > MAX_NAME_LEN * sizeof(WCHAR))
{ {
set_error( STATUS_NAME_TOO_LONG ); set_error( STATUS_INVALID_PARAMETER );
return NULL; return NULL;
} }
if (parent->last_subkey + 1 == parent->nb_subkeys) if (parent->last_subkey + 1 == parent->nb_subkeys)

8
server/request.c
View File

@ -191,9 +191,13 @@ const struct object_attributes *get_req_object_attributes( const struct security
set_error( STATUS_INVALID_SECURITY_DESCR ); set_error( STATUS_INVALID_SECURITY_DESCR );
return NULL; return NULL;
} }
if ((attr->name_len & (sizeof(WCHAR) - 1)) || attr->name_len >= 65534)
{
set_error( STATUS_OBJECT_NAME_INVALID );
return NULL;
}
*sd = attr->sd_len ? (const struct security_descriptor *)(attr + 1) : NULL; *sd = attr->sd_len ? (const struct security_descriptor *)(attr + 1) : NULL;
name->len = (attr->name_len / sizeof(WCHAR)) * sizeof(WCHAR); name->len = attr->name_len;
name->str = (const WCHAR *)(attr + 1) + attr->sd_len / sizeof(WCHAR); name->str = (const WCHAR *)(attr + 1) + attr->sd_len / sizeof(WCHAR);
return attr; return attr;
} }