rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

support creation of anonymous pipe on WinXP/2K3

Browse Source
This commit is contained in:
jsen-
2016-11-10 02:00:25 +01:00
parent da2ce22768
commit fc5a361c84
2 changed files with 26 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/libstd/sys/windows/c.rs
View File

@@ -182,6 +182,7 @@ pub const ERROR_INVALID_HANDLE: DWORD = 6;
pub const ERROR_NO_MORE_FILES: DWORD = 18;
pub const ERROR_HANDLE_EOF: DWORD = 38;
pub const ERROR_FILE_EXISTS: DWORD = 80;
pub const ERROR_INVALID_PARAMETER: DWORD = 87;
pub const ERROR_BROKEN_PIPE: DWORD = 109;
pub const ERROR_CALL_NOT_IMPLEMENTED: DWORD = 120;
pub const ERROR_INSUFFICIENT_BUFFER: DWORD = 122;

33
src/libstd/sys/windows/pipe.rs
View File

@@ -43,6 +43,7 @@ pub fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
let reader;
let mut name;
let mut tries = 0;
let mut reject_remote_clients_flag = c::PIPE_REJECT_REMOTE_CLIENTS;
loop {
tries += 1;
let key: u64 = rand::thread_rng().gen();
@@ -56,12 +57,12 @@ pub fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
let handle = c::CreateNamedPipeW(wide_name.as_ptr(),
c::PIPE_ACCESS_INBOUND |
c::FILE_FLAG_FIRST_PIPE_INSTANCE |
c::FILE_FLAG_OVERLAPPED,
c::FILE_FLAG_FIRST_PIPE_INSTANCE |
c::FILE_FLAG_OVERLAPPED,
c::PIPE_TYPE_BYTE |
c::PIPE_READMODE_BYTE |
c::PIPE_WAIT |
c::PIPE_REJECT_REMOTE_CLIENTS,
c::PIPE_READMODE_BYTE |
c::PIPE_WAIT |
reject_remote_clients_flag,
1,
4096,
4096,
@@ -76,11 +77,27 @@ pub fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
//
// Don't try again too much though as this could also perhaps be a
// legit error.
// If ERROR_INVALID_PARAMETER is returned, this probably means we're
// running on pre-Vista version where PIPE_REJECT_REMOTE_CLIENTS is
// not supported, so we continue retrying without it. This implies
// reduced security on Windows versions older than Vista by allowing
// connections to this pipe from remote machines.
// Proper fix would increase the number of FFI imports and introduce
// significant amount of Windows XP specific code with no clean
// testing strategy
// for more info see https://github.com/rust-lang/rust/pull/37677
if handle == c::INVALID_HANDLE_VALUE {
let err = io::Error::last_os_error();
if tries < 10 &&
err.raw_os_error() == Some(c::ERROR_ACCESS_DENIED as i32) {
continue
let raw_os_err = err.raw_os_error();
if tries < 10 {
if raw_os_err == Some(c::ERROR_ACCESS_DENIED as i32) {
continue
} else if reject_remote_clients_flag != 0 &&
raw_os_err == Some(c::ERROR_INVALID_PARAMETER as i32) {
reject_remote_clients_flag = 0;
tries -= 1;
continue
}
}
return Err(err)
}