mirror of
https://github.com/go-gitea/gitea
synced 2024-11-14 06:04:25 +00:00
08bf443016
* Inital routes to git refs api * Git refs API implementation * Update swagger * Fix copyright * Make swagger happy add basic test * Fix test * Fix test again :)
147 lines
4.2 KiB
Go
147 lines
4.2 KiB
Go
//
|
|
// Copyright (c) 2014 David Mzareulyan
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software
|
|
// and associated documentation files (the "Software"), to deal in the Software without restriction,
|
|
// including without limitation the rights to use, copy, modify, merge, publish, distribute,
|
|
// sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
|
|
// is furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all copies or substantial
|
|
// portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
|
|
// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
// +build windows
|
|
|
|
package sshagent
|
|
|
|
// see https://github.com/Yasushi/putty/blob/master/windows/winpgntc.c#L155
|
|
// see https://github.com/paramiko/paramiko/blob/master/paramiko/win_pageant.py
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"errors"
|
|
"fmt"
|
|
"sync"
|
|
"syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
// Maximum size of message can be sent to pageant
|
|
const MaxMessageLen = 8192
|
|
|
|
var (
|
|
ErrPageantNotFound = errors.New("pageant process not found")
|
|
ErrSendMessage = errors.New("error sending message")
|
|
|
|
ErrMessageTooLong = errors.New("message too long")
|
|
ErrInvalidMessageFormat = errors.New("invalid message format")
|
|
ErrResponseTooLong = errors.New("response too long")
|
|
)
|
|
|
|
const (
|
|
agentCopydataID = 0x804e50ba
|
|
wmCopydata = 74
|
|
)
|
|
|
|
type copyData struct {
|
|
dwData uintptr
|
|
cbData uint32
|
|
lpData unsafe.Pointer
|
|
}
|
|
|
|
var (
|
|
lock sync.Mutex
|
|
|
|
winFindWindow = winAPI("user32.dll", "FindWindowW")
|
|
winGetCurrentThreadID = winAPI("kernel32.dll", "GetCurrentThreadId")
|
|
winSendMessage = winAPI("user32.dll", "SendMessageW")
|
|
)
|
|
|
|
func winAPI(dllName, funcName string) func(...uintptr) (uintptr, uintptr, error) {
|
|
proc := syscall.MustLoadDLL(dllName).MustFindProc(funcName)
|
|
return func(a ...uintptr) (uintptr, uintptr, error) { return proc.Call(a...) }
|
|
}
|
|
|
|
// Available returns true if Pageant is running
|
|
func Available() bool { return pageantWindow() != 0 }
|
|
|
|
// Query sends message msg to Pageant and returns response or error.
|
|
// 'msg' is raw agent request with length prefix
|
|
// Response is raw agent response with length prefix
|
|
func query(msg []byte) ([]byte, error) {
|
|
if len(msg) > MaxMessageLen {
|
|
return nil, ErrMessageTooLong
|
|
}
|
|
|
|
msgLen := binary.BigEndian.Uint32(msg[:4])
|
|
if len(msg) != int(msgLen)+4 {
|
|
return nil, ErrInvalidMessageFormat
|
|
}
|
|
|
|
lock.Lock()
|
|
defer lock.Unlock()
|
|
|
|
paWin := pageantWindow()
|
|
|
|
if paWin == 0 {
|
|
return nil, ErrPageantNotFound
|
|
}
|
|
|
|
thID, _, _ := winGetCurrentThreadID()
|
|
mapName := fmt.Sprintf("PageantRequest%08x", thID)
|
|
pMapName, _ := syscall.UTF16PtrFromString(mapName)
|
|
|
|
mmap, err := syscall.CreateFileMapping(syscall.InvalidHandle, nil, syscall.PAGE_READWRITE, 0, MaxMessageLen+4, pMapName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer syscall.CloseHandle(mmap)
|
|
|
|
ptr, err := syscall.MapViewOfFile(mmap, syscall.FILE_MAP_WRITE, 0, 0, 0)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer syscall.UnmapViewOfFile(ptr)
|
|
|
|
mmSlice := (*(*[MaxMessageLen]byte)(unsafe.Pointer(ptr)))[:]
|
|
|
|
copy(mmSlice, msg)
|
|
|
|
mapNameBytesZ := append([]byte(mapName), 0)
|
|
|
|
cds := copyData{
|
|
dwData: agentCopydataID,
|
|
cbData: uint32(len(mapNameBytesZ)),
|
|
lpData: unsafe.Pointer(&(mapNameBytesZ[0])),
|
|
}
|
|
|
|
resp, _, _ := winSendMessage(paWin, wmCopydata, 0, uintptr(unsafe.Pointer(&cds)))
|
|
|
|
if resp == 0 {
|
|
return nil, ErrSendMessage
|
|
}
|
|
|
|
respLen := binary.BigEndian.Uint32(mmSlice[:4])
|
|
if respLen > MaxMessageLen-4 {
|
|
return nil, ErrResponseTooLong
|
|
}
|
|
|
|
respData := make([]byte, respLen+4)
|
|
copy(respData, mmSlice)
|
|
|
|
return respData, nil
|
|
}
|
|
|
|
func pageantWindow() uintptr {
|
|
nameP, _ := syscall.UTF16PtrFromString("Pageant")
|
|
h, _, _ := winFindWindow(uintptr(unsafe.Pointer(nameP)), uintptr(unsafe.Pointer(nameP)))
|
|
return h
|
|
}
|