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mirror of https://github.com/mpv-player/mpv synced 2024-12-25 00:02:13 +00:00
mpv/osdep/windows_utils.c
James Ross-Gowan 83fec9bafb subprocess-win: update to mp_subprocess2
This fixes the "run" and "subprocess" commands on Windows, including
youtube-dl support.

Unix-like FD inheritance is emulated on Windows by using an undocumented
data structure[1] that gets passed to the newly created process in
STARTUPINFO.lpReserved2. It consists of two sparse arrays listing the
HANDLE and internal CRT flags corresponding to each FD. This structure
is used and understood primarily by MSVCRT, but there are other runtimes
and frameworks that can write it, like libuv.

The code for creating asynchronous "anonymous" pipes in Windows has been
enhanced and moved into windows_utils.c. This is mainly an artifact of
an unfinished future change to support anonymous IPC clients in Windows.
Right now, it's still only used in subprocess-win.c

[1]: https://www.catch22.net/tuts/undocumented-createprocess
2020-07-20 21:02:17 +02:00

230 lines
7.3 KiB
C

/*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <inttypes.h>
#include <windows.h>
#include <errors.h>
#include <audioclient.h>
#include <d3d9.h>
#include <dxgi1_2.h>
#include "common/common.h"
#include "osdep/atomic.h"
#include "windows_utils.h"
char *mp_GUID_to_str_buf(char *buf, size_t buf_size, const GUID *guid)
{
snprintf(buf, buf_size,
"{%8.8x-%4.4x-%4.4x-%2.2x%2.2x-%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x}",
(unsigned) guid->Data1, guid->Data2, guid->Data3,
guid->Data4[0], guid->Data4[1],
guid->Data4[2], guid->Data4[3],
guid->Data4[4], guid->Data4[5],
guid->Data4[6], guid->Data4[7]);
return buf;
}
static char *hresult_to_str(const HRESULT hr)
{
#define E(x) case x : return # x ;
switch (hr) {
E(S_OK)
E(S_FALSE)
E(E_FAIL)
E(E_OUTOFMEMORY)
E(E_POINTER)
E(E_HANDLE)
E(E_NOTIMPL)
E(E_INVALIDARG)
E(E_PROP_ID_UNSUPPORTED)
E(E_NOINTERFACE)
E(REGDB_E_IIDNOTREG)
E(CO_E_NOTINITIALIZED)
E(AUDCLNT_E_NOT_INITIALIZED)
E(AUDCLNT_E_ALREADY_INITIALIZED)
E(AUDCLNT_E_WRONG_ENDPOINT_TYPE)
E(AUDCLNT_E_DEVICE_INVALIDATED)
E(AUDCLNT_E_NOT_STOPPED)
E(AUDCLNT_E_BUFFER_TOO_LARGE)
E(AUDCLNT_E_OUT_OF_ORDER)
E(AUDCLNT_E_UNSUPPORTED_FORMAT)
E(AUDCLNT_E_INVALID_SIZE)
E(AUDCLNT_E_DEVICE_IN_USE)
E(AUDCLNT_E_BUFFER_OPERATION_PENDING)
E(AUDCLNT_E_THREAD_NOT_REGISTERED)
E(AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED)
E(AUDCLNT_E_ENDPOINT_CREATE_FAILED)
E(AUDCLNT_E_SERVICE_NOT_RUNNING)
E(AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED)
E(AUDCLNT_E_EXCLUSIVE_MODE_ONLY)
E(AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL)
E(AUDCLNT_E_EVENTHANDLE_NOT_SET)
E(AUDCLNT_E_INCORRECT_BUFFER_SIZE)
E(AUDCLNT_E_BUFFER_SIZE_ERROR)
E(AUDCLNT_E_CPUUSAGE_EXCEEDED)
E(AUDCLNT_E_BUFFER_ERROR)
E(AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED)
E(AUDCLNT_E_INVALID_DEVICE_PERIOD)
E(AUDCLNT_E_INVALID_STREAM_FLAG)
E(AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE)
E(AUDCLNT_E_RESOURCES_INVALIDATED)
E(AUDCLNT_S_BUFFER_EMPTY)
E(AUDCLNT_S_THREAD_ALREADY_REGISTERED)
E(AUDCLNT_S_POSITION_STALLED)
E(D3DERR_WRONGTEXTUREFORMAT)
E(D3DERR_UNSUPPORTEDCOLOROPERATION)
E(D3DERR_UNSUPPORTEDCOLORARG)
E(D3DERR_UNSUPPORTEDALPHAOPERATION)
E(D3DERR_UNSUPPORTEDALPHAARG)
E(D3DERR_TOOMANYOPERATIONS)
E(D3DERR_CONFLICTINGTEXTUREFILTER)
E(D3DERR_UNSUPPORTEDFACTORVALUE)
E(D3DERR_CONFLICTINGRENDERSTATE)
E(D3DERR_UNSUPPORTEDTEXTUREFILTER)
E(D3DERR_CONFLICTINGTEXTUREPALETTE)
E(D3DERR_DRIVERINTERNALERROR)
E(D3DERR_NOTFOUND)
E(D3DERR_MOREDATA)
E(D3DERR_DEVICELOST)
E(D3DERR_DEVICENOTRESET)
E(D3DERR_NOTAVAILABLE)
E(D3DERR_OUTOFVIDEOMEMORY)
E(D3DERR_INVALIDDEVICE)
E(D3DERR_INVALIDCALL)
E(D3DERR_DRIVERINVALIDCALL)
E(D3DERR_WASSTILLDRAWING)
E(D3DOK_NOAUTOGEN)
E(D3DERR_DEVICEREMOVED)
E(D3DERR_DEVICEHUNG)
E(S_NOT_RESIDENT)
E(S_RESIDENT_IN_SHARED_MEMORY)
E(S_PRESENT_MODE_CHANGED)
E(S_PRESENT_OCCLUDED)
E(D3DERR_UNSUPPORTEDOVERLAY)
E(D3DERR_UNSUPPORTEDOVERLAYFORMAT)
E(D3DERR_CANNOTPROTECTCONTENT)
E(D3DERR_UNSUPPORTEDCRYPTO)
E(D3DERR_PRESENT_STATISTICS_DISJOINT)
E(DXGI_ERROR_DEVICE_HUNG)
E(DXGI_ERROR_DEVICE_REMOVED)
E(DXGI_ERROR_DEVICE_RESET)
E(DXGI_ERROR_DRIVER_INTERNAL_ERROR)
E(DXGI_ERROR_INVALID_CALL)
E(DXGI_ERROR_WAS_STILL_DRAWING)
E(DXGI_STATUS_OCCLUDED)
default:
return "<Unknown>";
}
#undef E
}
static char *fmtmsg_buf(char *buf, size_t buf_size, DWORD errorID)
{
DWORD n = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, errorID, 0, buf, buf_size, NULL);
if (!n && GetLastError() == ERROR_MORE_DATA) {
snprintf(buf, buf_size,
"<Insufficient buffer size (%zd) for error message>",
buf_size);
} else {
if (n > 0 && buf[n-1] == '\n')
buf[n-1] = '\0';
if (n > 1 && buf[n-2] == '\r')
buf[n-2] = '\0';
}
return buf;
}
#define fmtmsg(hr) fmtmsg_buf((char[243]){0}, 243, (hr))
char *mp_HRESULT_to_str_buf(char *buf, size_t buf_size, HRESULT hr)
{
char* msg = fmtmsg(hr);
msg = msg[0] ? msg : hresult_to_str(hr);
snprintf(buf, buf_size, "%s (0x%"PRIx32")", msg, (uint32_t)hr);
return buf;
}
bool mp_w32_create_anon_pipe(HANDLE *server, HANDLE *client,
struct w32_create_anon_pipe_opts *opts)
{
static atomic_ulong counter = ATOMIC_VAR_INIT(0);
// Generate pipe name
unsigned long id = atomic_fetch_add(&counter, 1);
unsigned pid = GetCurrentProcessId();
wchar_t buf[36];
swprintf(buf, MP_ARRAY_SIZE(buf), L"\\\\.\\pipe\\mpv-anon-%08x-%08lx",
pid, id);
DWORD client_access = 0;
DWORD out_buffer = opts->out_buf_size;
DWORD in_buffer = opts->in_buf_size;
if (opts->server_flags & PIPE_ACCESS_INBOUND) {
client_access |= FILE_GENERIC_WRITE | FILE_READ_ATTRIBUTES;
if (!in_buffer)
in_buffer = 4096;
}
if (opts->server_flags & PIPE_ACCESS_OUTBOUND) {
client_access |= FILE_GENERIC_READ | FILE_WRITE_ATTRIBUTES;
if (!out_buffer)
out_buffer = 4096;
}
SECURITY_ATTRIBUTES inherit_sa = {
.nLength = sizeof inherit_sa,
.bInheritHandle = TRUE,
};
// The function for creating anonymous pipes (CreatePipe) can't create
// overlapped pipes, so instead, use a named pipe with a unique name
*server = CreateNamedPipeW(buf,
opts->server_flags | FILE_FLAG_FIRST_PIPE_INSTANCE,
opts->server_mode | PIPE_REJECT_REMOTE_CLIENTS,
1, out_buffer, in_buffer, 0,
opts->server_inheritable ? &inherit_sa : NULL);
if (*server == INVALID_HANDLE_VALUE)
goto error;
// Open the write end of the pipe as a synchronous handle
*client = CreateFileW(buf, client_access, 0,
opts->client_inheritable ? &inherit_sa : NULL,
OPEN_EXISTING,
opts->client_flags | SECURITY_SQOS_PRESENT |
SECURITY_ANONYMOUS, NULL);
if (*client == INVALID_HANDLE_VALUE) {
CloseHandle(*server);
goto error;
}
if (opts->client_mode) {
if (!SetNamedPipeHandleState(*client, &opts->client_mode, NULL, NULL)) {
CloseHandle(*server);
CloseHandle(*client);
goto error;
}
}
return true;
error:
*server = *client = INVALID_HANDLE_VALUE;
return false;
}