refactor to mautrix 0.17.x; update deps

vendor/golang.org/x/sys/windows/env_windows.go

@@ -37,14 +37,17 @@ func (token Token) Environ(inheritExisting bool) (env []string, err error) {
 		return nil, err
 	}
 	defer DestroyEnvironmentBlock(block)
-	blockp := unsafe.Pointer(block)
-	for {
-		entry := UTF16PtrToString((*uint16)(blockp))
-		if len(entry) == 0 {
-			break
+	size := unsafe.Sizeof(*block)
+	for *block != 0 {
+		// find NUL terminator
+		end := unsafe.Pointer(block)
+		for *(*uint16)(end) != 0 {
+			end = unsafe.Add(end, size)
 		}
-		env = append(env, entry)
-		blockp = unsafe.Add(blockp, 2*(len(entry)+1))
+
+		entry := unsafe.Slice(block, (uintptr(end)-uintptr(unsafe.Pointer(block)))/size)
+		env = append(env, UTF16ToString(entry))
+		block = (*uint16)(unsafe.Add(end, size))
 	}
 	return env, nil
 }

vendor/golang.org/x/sys/windows/syscall_windows.go

@@ -125,8 +125,7 @@ func UTF16PtrToString(p *uint16) string {
 	for ptr := unsafe.Pointer(p); *(*uint16)(ptr) != 0; n++ {
 		ptr = unsafe.Pointer(uintptr(ptr) + unsafe.Sizeof(*p))
 	}
-
-	return string(utf16.Decode(unsafe.Slice(p, n)))
+	return UTF16ToString(unsafe.Slice(p, n))
 }
 
 func Getpagesize() int { return 4096 }
@@ -155,6 +154,8 @@ func NewCallbackCDecl(fn interface{}) uintptr {
 //sys	GetModuleFileName(module Handle, filename *uint16, size uint32) (n uint32, err error) = kernel32.GetModuleFileNameW
 //sys	GetModuleHandleEx(flags uint32, moduleName *uint16, module *Handle) (err error) = kernel32.GetModuleHandleExW
 //sys	SetDefaultDllDirectories(directoryFlags uint32) (err error)
+//sys	AddDllDirectory(path *uint16) (cookie uintptr, err error) = kernel32.AddDllDirectory
+//sys	RemoveDllDirectory(cookie uintptr) (err error) = kernel32.RemoveDllDirectory
 //sys	SetDllDirectory(path string) (err error) = kernel32.SetDllDirectoryW
 //sys	GetVersion() (ver uint32, err error)
 //sys	FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW
@@ -192,6 +193,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
 //sys	GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW
 //sys	GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW
 //sys	SetEndOfFile(handle Handle) (err error)
+//sys	SetFileValidData(handle Handle, validDataLength int64) (err error)
 //sys	GetSystemTimeAsFileTime(time *Filetime)
 //sys	GetSystemTimePreciseAsFileTime(time *Filetime)
 //sys	GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff]

vendor/golang.org/x/sys/windows/zsyscall_windows.go

@@ -184,6 +184,7 @@ var (
 	procGetAdaptersInfo                                      = modiphlpapi.NewProc("GetAdaptersInfo")
 	procGetBestInterfaceEx                                   = modiphlpapi.NewProc("GetBestInterfaceEx")
 	procGetIfEntry                                           = modiphlpapi.NewProc("GetIfEntry")
+	procAddDllDirectory                                      = modkernel32.NewProc("AddDllDirectory")
 	procAssignProcessToJobObject                             = modkernel32.NewProc("AssignProcessToJobObject")
 	procCancelIo                                             = modkernel32.NewProc("CancelIo")
 	procCancelIoEx                                           = modkernel32.NewProc("CancelIoEx")
@@ -330,6 +331,7 @@ var (
 	procReadProcessMemory                                    = modkernel32.NewProc("ReadProcessMemory")
 	procReleaseMutex                                         = modkernel32.NewProc("ReleaseMutex")
 	procRemoveDirectoryW                                     = modkernel32.NewProc("RemoveDirectoryW")
+	procRemoveDllDirectory                                   = modkernel32.NewProc("RemoveDllDirectory")
 	procResetEvent                                           = modkernel32.NewProc("ResetEvent")
 	procResizePseudoConsole                                  = modkernel32.NewProc("ResizePseudoConsole")
 	procResumeThread                                         = modkernel32.NewProc("ResumeThread")
@@ -340,6 +342,7 @@ var (
 	procSetDefaultDllDirectories                             = modkernel32.NewProc("SetDefaultDllDirectories")
 	procSetDllDirectoryW                                     = modkernel32.NewProc("SetDllDirectoryW")
 	procSetEndOfFile                                         = modkernel32.NewProc("SetEndOfFile")
+	procSetFileValidData                                     = modkernel32.NewProc("SetFileValidData")
 	procSetEnvironmentVariableW                              = modkernel32.NewProc("SetEnvironmentVariableW")
 	procSetErrorMode                                         = modkernel32.NewProc("SetErrorMode")
 	procSetEvent                                             = modkernel32.NewProc("SetEvent")
@@ -1605,6 +1608,15 @@ func GetIfEntry(pIfRow *MibIfRow) (errcode error) {
 	return
 }
 
+func AddDllDirectory(path *uint16) (cookie uintptr, err error) {
+	r0, _, e1 := syscall.Syscall(procAddDllDirectory.Addr(), 1, uintptr(unsafe.Pointer(path)), 0, 0)
+	cookie = uintptr(r0)
+	if cookie == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func AssignProcessToJobObject(job Handle, process Handle) (err error) {
 	r1, _, e1 := syscall.Syscall(procAssignProcessToJobObject.Addr(), 2, uintptr(job), uintptr(process), 0)
 	if r1 == 0 {
@@ -2879,6 +2891,14 @@ func RemoveDirectory(path *uint16) (err error) {
 	return
 }
 
+func RemoveDllDirectory(cookie uintptr) (err error) {
+	r1, _, e1 := syscall.Syscall(procRemoveDllDirectory.Addr(), 1, uintptr(cookie), 0, 0)
+	if r1 == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func ResetEvent(event Handle) (err error) {
 	r1, _, e1 := syscall.Syscall(procResetEvent.Addr(), 1, uintptr(event), 0, 0)
 	if r1 == 0 {
@@ -2969,6 +2989,14 @@ func SetEndOfFile(handle Handle) (err error) {
 	return
 }
 
+func SetFileValidData(handle Handle, validDataLength int64) (err error) {
+	r1, _, e1 := syscall.Syscall(procSetFileValidData.Addr(), 2, uintptr(handle), uintptr(validDataLength), 0)
+	if r1 == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func SetEnvironmentVariable(name *uint16, value *uint16) (err error) {
 	r1, _, e1 := syscall.Syscall(procSetEnvironmentVariableW.Addr(), 2, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(value)), 0)
 	if r1 == 0 {