Add vendor files for spf13/viper

1 files changed, 241 insertions, 0 deletions

diff --git a/vendor/github.com/pkg/sftp/attrs.go b/vendor/github.com/pkg/sftp/attrs.go
new file mode 100644
index 00000000..18412e33
--- /dev/null
+++ b/vendor/github.com/pkg/sftp/attrs.go
@@ -0,0 +1,241 @@
+package sftp
+
+// ssh_FXP_ATTRS support
+// see http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02#section-5
+
+import (
+	"os"
+	"syscall"
+	"time"
+)
+
+const (
+	ssh_FILEXFER_ATTR_SIZE        = 0x00000001
+	ssh_FILEXFER_ATTR_UIDGID      = 0x00000002
+	ssh_FILEXFER_ATTR_PERMISSIONS = 0x00000004
+	ssh_FILEXFER_ATTR_ACMODTIME   = 0x00000008
+	ssh_FILEXFER_ATTR_EXTENDED    = 0x80000000
+)
+
+// fileInfo is an artificial type designed to satisfy os.FileInfo.
+type fileInfo struct {
+	name  string
+	size  int64
+	mode  os.FileMode
+	mtime time.Time
+	sys   interface{}
+}
+
+// Name returns the base name of the file.
+func (fi *fileInfo) Name() string { return fi.name }
+
+// Size returns the length in bytes for regular files; system-dependent for others.
+func (fi *fileInfo) Size() int64 { return fi.size }
+
+// Mode returns file mode bits.
+func (fi *fileInfo) Mode() os.FileMode { return fi.mode }
+
+// ModTime returns the last modification time of the file.
+func (fi *fileInfo) ModTime() time.Time { return fi.mtime }
+
+// IsDir returns true if the file is a directory.
+func (fi *fileInfo) IsDir() bool { return fi.Mode().IsDir() }
+
+func (fi *fileInfo) Sys() interface{} { return fi.sys }
+
+// FileStat holds the original unmarshalled values from a call to READDIR or *STAT.
+// It is exported for the purposes of accessing the raw values via os.FileInfo.Sys()
+type FileStat struct {
+	Size     uint64
+	Mode     uint32
+	Mtime    uint32
+	Atime    uint32
+	UID      uint32
+	GID      uint32
+	Extended []StatExtended
+}
+
+// StatExtended contains additional, extended information for a FileStat.
+type StatExtended struct {
+	ExtType string
+	ExtData string
+}
+
+func fileInfoFromStat(st *FileStat, name string) os.FileInfo {
+	fs := &fileInfo{
+		name:  name,
+		size:  int64(st.Size),
+		mode:  toFileMode(st.Mode),
+		mtime: time.Unix(int64(st.Mtime), 0),
+		sys:   st,
+	}
+	return fs
+}
+
+func fileStatFromInfo(fi os.FileInfo) (uint32, FileStat) {
+	mtime := fi.ModTime().Unix()
+	atime := mtime
+	var flags uint32 = ssh_FILEXFER_ATTR_SIZE |
+		ssh_FILEXFER_ATTR_PERMISSIONS |
+		ssh_FILEXFER_ATTR_ACMODTIME
+
+	fileStat := FileStat{
+		Size:  uint64(fi.Size()),
+		Mode:  fromFileMode(fi.Mode()),
+		Mtime: uint32(mtime),
+		Atime: uint32(atime),
+	}
+
+	// os specific file stat decoding
+	fileStatFromInfoOs(fi, &flags, &fileStat)
+
+	return flags, fileStat
+}
+
+func unmarshalAttrs(b []byte) (*FileStat, []byte) {
+	flags, b := unmarshalUint32(b)
+	return getFileStat(flags, b)
+}
+
+func getFileStat(flags uint32, b []byte) (*FileStat, []byte) {
+	var fs FileStat
+	if flags&ssh_FILEXFER_ATTR_SIZE == ssh_FILEXFER_ATTR_SIZE {
+		fs.Size, b = unmarshalUint64(b)
+	}
+	if flags&ssh_FILEXFER_ATTR_UIDGID == ssh_FILEXFER_ATTR_UIDGID {
+		fs.UID, b = unmarshalUint32(b)
+	}
+	if flags&ssh_FILEXFER_ATTR_UIDGID == ssh_FILEXFER_ATTR_UIDGID {
+		fs.GID, b = unmarshalUint32(b)
+	}
+	if flags&ssh_FILEXFER_ATTR_PERMISSIONS == ssh_FILEXFER_ATTR_PERMISSIONS {
+		fs.Mode, b = unmarshalUint32(b)
+	}
+	if flags&ssh_FILEXFER_ATTR_ACMODTIME == ssh_FILEXFER_ATTR_ACMODTIME {
+		fs.Atime, b = unmarshalUint32(b)
+		fs.Mtime, b = unmarshalUint32(b)
+	}
+	if flags&ssh_FILEXFER_ATTR_EXTENDED == ssh_FILEXFER_ATTR_EXTENDED {
+		var count uint32
+		count, b = unmarshalUint32(b)
+		ext := make([]StatExtended, count)
+		for i := uint32(0); i < count; i++ {
+			var typ string
+			var data string
+			typ, b = unmarshalString(b)
+			data, b = unmarshalString(b)
+			ext[i] = StatExtended{typ, data}
+		}
+		fs.Extended = ext
+	}
+	return &fs, b
+}
+
+func marshalFileInfo(b []byte, fi os.FileInfo) []byte {
+	// attributes variable struct, and also variable per protocol version
+	// spec version 3 attributes:
+	// uint32   flags
+	// uint64   size           present only if flag SSH_FILEXFER_ATTR_SIZE
+	// uint32   uid            present only if flag SSH_FILEXFER_ATTR_UIDGID
+	// uint32   gid            present only if flag SSH_FILEXFER_ATTR_UIDGID
+	// uint32   permissions    present only if flag SSH_FILEXFER_ATTR_PERMISSIONS
+	// uint32   atime          present only if flag SSH_FILEXFER_ACMODTIME
+	// uint32   mtime          present only if flag SSH_FILEXFER_ACMODTIME
+	// uint32   extended_count present only if flag SSH_FILEXFER_ATTR_EXTENDED
+	// string   extended_type
+	// string   extended_data
+	// ...      more extended data (extended_type - extended_data pairs),
+	// 	   so that number of pairs equals extended_count
+
+	flags, fileStat := fileStatFromInfo(fi)
+
+	b = marshalUint32(b, flags)
+	if flags&ssh_FILEXFER_ATTR_SIZE != 0 {
+		b = marshalUint64(b, fileStat.Size)
+	}
+	if flags&ssh_FILEXFER_ATTR_UIDGID != 0 {
+		b = marshalUint32(b, fileStat.UID)
+		b = marshalUint32(b, fileStat.GID)
+	}
+	if flags&ssh_FILEXFER_ATTR_PERMISSIONS != 0 {
+		b = marshalUint32(b, fileStat.Mode)
+	}
+	if flags&ssh_FILEXFER_ATTR_ACMODTIME != 0 {
+		b = marshalUint32(b, fileStat.Atime)
+		b = marshalUint32(b, fileStat.Mtime)
+	}
+
+	return b
+}
+
+// toFileMode converts sftp filemode bits to the os.FileMode specification
+func toFileMode(mode uint32) os.FileMode {
+	var fm = os.FileMode(mode & 0777)
+	switch mode & syscall.S_IFMT {
+	case syscall.S_IFBLK:
+		fm |= os.ModeDevice
+	case syscall.S_IFCHR:
+		fm |= os.ModeDevice | os.ModeCharDevice
+	case syscall.S_IFDIR:
+		fm |= os.ModeDir
+	case syscall.S_IFIFO:
+		fm |= os.ModeNamedPipe
+	case syscall.S_IFLNK:
+		fm |= os.ModeSymlink
+	case syscall.S_IFREG:
+		// nothing to do
+	case syscall.S_IFSOCK:
+		fm |= os.ModeSocket
+	}
+	if mode&syscall.S_ISGID != 0 {
+		fm |= os.ModeSetgid
+	}
+	if mode&syscall.S_ISUID != 0 {
+		fm |= os.ModeSetuid
+	}
+	if mode&syscall.S_ISVTX != 0 {
+		fm |= os.ModeSticky
+	}
+	return fm
+}
+
+// fromFileMode converts from the os.FileMode specification to sftp filemode bits
+func fromFileMode(mode os.FileMode) uint32 {
+	ret := uint32(0)
+
+	if mode&os.ModeDevice != 0 {
+		if mode&os.ModeCharDevice != 0 {
+			ret |= syscall.S_IFCHR
+		} else {
+			ret |= syscall.S_IFBLK
+		}
+	}
+	if mode&os.ModeDir != 0 {
+		ret |= syscall.S_IFDIR
+	}
+	if mode&os.ModeSymlink != 0 {
+		ret |= syscall.S_IFLNK
+	}
+	if mode&os.ModeNamedPipe != 0 {
+		ret |= syscall.S_IFIFO
+	}
+	if mode&os.ModeSetgid != 0 {
+		ret |= syscall.S_ISGID
+	}
+	if mode&os.ModeSetuid != 0 {
+		ret |= syscall.S_ISUID
+	}
+	if mode&os.ModeSticky != 0 {
+		ret |= syscall.S_ISVTX
+	}
+	if mode&os.ModeSocket != 0 {
+		ret |= syscall.S_IFSOCK
+	}
+
+	if mode&os.ModeType == 0 {
+		ret |= syscall.S_IFREG
+	}
+	ret |= uint32(mode & os.ModePerm)
+
+	return ret
+}