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server: Correctly implement permission checking for named pipes.

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Bernhard Loos 2011-09-29 11:20:50 +02:00 committed by Alexandre Julliard
parent e4c2a6d1cd
commit 9034e694a3
2 changed files with 62 additions and 0 deletions
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52
dlls/ntdll/tests/pipe.c
View file

@ -172,6 +172,55 @@ static void test_create_invalid(void)
CloseHandle(handle);
}
static void test_create(void)
{
HANDLE hserver;
NTSTATUS res;
int j, k;
FILE_PIPE_LOCAL_INFORMATION info;
IO_STATUS_BLOCK iosb;
static const DWORD access[] = { 0, GENERIC_READ, GENERIC_WRITE, GENERIC_READ | GENERIC_WRITE};
static const DWORD sharing[] = { FILE_SHARE_READ, FILE_SHARE_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE };
for (j = 0; j < sizeof(sharing) / sizeof(DWORD); j++) {
for (k = 0; k < sizeof(access) / sizeof(DWORD); k++) {
HANDLE hclient;
BOOL should_succeed = TRUE;
res = create_pipe(&hserver, sharing[j], FILE_SYNCHRONOUS_IO_NONALERT);
if (res) {
ok(0, "NtCreateNamedPipeFile returned %x, sharing: %x\n", res, sharing[j]);
continue;
}
res = pNtQueryInformationFile(hserver, &iosb, &info, sizeof(info), (FILE_INFORMATION_CLASS)24);
ok(!res, "NtQueryInformationFile for server returned %x, sharing: %x\n", res, sharing[j]);
hclient = CreateFileW(testpipe, access[k], 0, 0, OPEN_EXISTING, 0, 0);
if (hclient != INVALID_HANDLE_VALUE) {
res = pNtQueryInformationFile(hclient, &iosb, &info, sizeof(info), (FILE_INFORMATION_CLASS)24);
ok(!res, "NtQueryInformationFile for client returned %x, access: %x, sharing: %x\n",
res, access[k], sharing[j]);
CloseHandle(hclient);
}
if (access[k] & GENERIC_WRITE)
should_succeed &= !!(sharing[j] & FILE_SHARE_WRITE);
if (access[k] & GENERIC_READ)
should_succeed &= !!(sharing[j] & FILE_SHARE_READ);
if (should_succeed)
ok(hclient != INVALID_HANDLE_VALUE, "CreateFile failed for sharing %x, access: %x, GetLastError: %d\n",
sharing[j], access[k], GetLastError());
else
ok(hclient == INVALID_HANDLE_VALUE, "CreateFile succeded for sharing %x, access: %x\n", sharing[j], access[k]);
CloseHandle(hserver);
}
}
}
static BOOL ioapc_called;
static void CALLBACK ioapc(void *arg, PIO_STATUS_BLOCK io, ULONG reserved)
{
@ -419,6 +468,9 @@ START_TEST(pipe)
trace("starting invalid create tests\n");
test_create_invalid();
trace("starting create tests\n");
test_create();
trace("starting overlapped tests\n");
test_overlapped();

10
server/named_pipe.c
View file

@ -804,6 +804,7 @@ static struct object *named_pipe_open_file( struct object *obj, unsigned int acc
struct named_pipe *pipe = (struct named_pipe *)obj;
struct pipe_server *server;
struct pipe_client *client;
unsigned int pipe_sharing;
int fds[2];
if (!(server = find_available_server( pipe )))
@ -812,6 +813,15 @@ static struct object *named_pipe_open_file( struct object *obj, unsigned int acc
return NULL;
}
pipe_sharing = server->pipe->sharing;
if (((access & GENERIC_READ) && !(pipe_sharing & FILE_SHARE_READ)) ||
((access & GENERIC_WRITE) && !(pipe_sharing & FILE_SHARE_WRITE)))
{
set_error( STATUS_ACCESS_DENIED );
release_object( server );
return NULL;
}
if ((client = create_pipe_client( options )))
{
if (!socketpair( PF_UNIX, SOCK_STREAM, 0, fds ))