fix(*): Vendored project dependencies

vendor/github.com/davidmz/go-pageant/LICENSE.txt

@@ -0,0 +1,16 @@
+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.

vendor/github.com/davidmz/go-pageant/README.md

@@ -0,0 +1,9 @@
+[![GoDoc](https://godoc.org/github.com/davidmz/go-pageant?status.svg)](https://godoc.org/github.com/davidmz/go-pageant)
+
+Package pageant provides an interface to PyTTY pageant.exe utility.
+
+This package is windows-only.
+
+See documentation on [GoDoc](http://godoc.org/github.com/davidmz/go-pageant)
+
+License: MIT

vendor/github.com/davidmz/go-pageant/io_windows.go

@@ -0,0 +1,42 @@
+package pageant
+
+import (
+	"io"
+	"sync"
+
+	"golang.org/x/crypto/ssh/agent"
+)
+
+// New returns new ssh-agent instance (see http://golang.org/x/crypto/ssh/agent)
+func New() agent.Agent {
+	return agent.NewClient(&conn{})
+}
+
+type conn struct {
+	sync.Mutex
+	buf []byte
+}
+
+func (c *conn) Write(p []byte) (int, error) {
+	c.Lock()
+	defer c.Unlock()
+
+	resp, err := query(p)
+	if err != nil {
+		return 0, err
+	}
+	c.buf = append(c.buf, resp...)
+	return len(p), nil
+}
+
+func (c *conn) Read(p []byte) (int, error) {
+	c.Lock()
+	defer c.Unlock()
+
+	if len(c.buf) == 0 {
+		return 0, io.EOF
+	}
+	n := copy(p, c.buf)
+	c.buf = c.buf[n:]
+	return n, nil
+}

vendor/github.com/davidmz/go-pageant/pageant_windows.go

@@ -0,0 +1,134 @@
+// Package pageant provides an interface to PyTTY pageant.exe utility.
+// This package is windows-only
+package pageant
+
+// 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"
+)
+
+// MaxMessageLen defines maximum size of message can be sent to pageant
+const MaxMessageLen = 8192
+
+var (
+	// ErrPageantNotFound returns when pageant process not found
+	ErrPageantNotFound = errors.New("pageant process not found")
+	// ErrSendMessage returns when message to pageant cannt be sent
+	ErrSendMessage = errors.New("error sending message")
+
+	// ErrMessageTooLong returns when message is too long (see MaxMessageLen)
+	ErrMessageTooLong = errors.New("message too long")
+	// ErrInvalidMessageFormat returns when message have invalid fomat
+	ErrInvalidMessageFormat = errors.New("invalid message format")
+	// ErrResponseTooLong returns when response from pageant is too long
+	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 started
+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
+}