From 5a9a6a145eed5ac4e980246e5e60ab7e8aa091f8 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Tue, 11 Aug 2020 09:28:29 +0200
Subject: [PATCH] vendor: golang.org/x/crypto
 v0.0.0-20200622213623-75b288015ac9

full diff: https://github.com/golang/crypto/compare/bac4c82f69751a6dd76e702d54b3ceb88adab236...75b288015ac94e66e3d6715fb68a9b41bf046ec2

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 vendor.conf                                   |  2 +-
 .../x/crypto/openpgp/packet/packet.go         | 69 ++++++++++++++-----
 .../x/crypto/ssh/terminal/terminal.go         |  8 +++
 3 files changed, 60 insertions(+), 19 deletions(-)

diff --git a/vendor.conf b/vendor.conf
index 77bf12444..d44b1fd5e 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -70,7 +70,7 @@ github.com/modern-go/reflect2                       v1.0.1
 github.com/opencontainers/selinux                   v1.6.0
 github.com/tchap/go-patricia                        v2.2.6
 github.com/willf/bitset                             d5bec3311243426a3c6d1b7a795f24b17c686dbb # 1.1.10+ used by selinux pkg
-golang.org/x/crypto                                 bac4c82f69751a6dd76e702d54b3ceb88adab236
+golang.org/x/crypto                                 75b288015ac94e66e3d6715fb68a9b41bf046ec2
 golang.org/x/oauth2                                 858c2ad4c8b6c5d10852cb89079f6ca1c7309787
 golang.org/x/time                                   555d28b269f0569763d25dbe1a237ae74c6bcc82
 gopkg.in/inf.v0                                     v0.9.1
diff --git a/vendor/golang.org/x/crypto/openpgp/packet/packet.go b/vendor/golang.org/x/crypto/openpgp/packet/packet.go
index 5af64c542..9728d61d7 100644
--- a/vendor/golang.org/x/crypto/openpgp/packet/packet.go
+++ b/vendor/golang.org/x/crypto/openpgp/packet/packet.go
@@ -14,6 +14,7 @@ import (
 	"crypto/rsa"
 	"io"
 	"math/big"
+	"math/bits"
 
 	"golang.org/x/crypto/cast5"
 	"golang.org/x/crypto/openpgp/errors"
@@ -100,33 +101,65 @@ func (r *partialLengthReader) Read(p []byte) (n int, err error) {
 type partialLengthWriter struct {
 	w          io.WriteCloser
 	lengthByte [1]byte
+	sentFirst  bool
+	buf        []byte
 }
 
+// RFC 4880 4.2.2.4: the first partial length MUST be at least 512 octets long.
+const minFirstPartialWrite = 512
+
 func (w *partialLengthWriter) Write(p []byte) (n int, err error) {
-	for len(p) > 0 {
-		for power := uint(14); power < 32; power-- {
-			l := 1 << power
-			if len(p) >= l {
-				w.lengthByte[0] = 224 + uint8(power)
-				_, err = w.w.Write(w.lengthByte[:])
-				if err != nil {
-					return
-				}
-				var m int
-				m, err = w.w.Write(p[:l])
-				n += m
-				if err != nil {
-					return
-				}
-				p = p[l:]
-				break
+	off := 0
+	if !w.sentFirst {
+		if len(w.buf) > 0 || len(p) < minFirstPartialWrite {
+			off = len(w.buf)
+			w.buf = append(w.buf, p...)
+			if len(w.buf) < minFirstPartialWrite {
+				return len(p), nil
 			}
+			p = w.buf
+			w.buf = nil
 		}
+		w.sentFirst = true
 	}
-	return
+
+	power := uint8(30)
+	for len(p) > 0 {
+		l := 1 << power
+		if len(p) < l {
+			power = uint8(bits.Len32(uint32(len(p)))) - 1
+			l = 1 << power
+		}
+		w.lengthByte[0] = 224 + power
+		_, err = w.w.Write(w.lengthByte[:])
+		if err == nil {
+			var m int
+			m, err = w.w.Write(p[:l])
+			n += m
+		}
+		if err != nil {
+			if n < off {
+				return 0, err
+			}
+			return n - off, err
+		}
+		p = p[l:]
+	}
+	return n - off, nil
 }
 
 func (w *partialLengthWriter) Close() error {
+	if len(w.buf) > 0 {
+		// In this case we can't send a 512 byte packet.
+		// Just send what we have.
+		p := w.buf
+		w.sentFirst = true
+		w.buf = nil
+		if _, err := w.Write(p); err != nil {
+			return err
+		}
+	}
+
 	w.lengthByte[0] = 0
 	_, err := w.w.Write(w.lengthByte[:])
 	if err != nil {
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/terminal.go b/vendor/golang.org/x/crypto/ssh/terminal/terminal.go
index d1b4fca3a..2ffb97bfb 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/terminal.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/terminal.go
@@ -113,6 +113,7 @@ func NewTerminal(c io.ReadWriter, prompt string) *Terminal {
 }
 
 const (
+	keyCtrlC     = 3
 	keyCtrlD     = 4
 	keyCtrlU     = 21
 	keyEnter     = '\r'
@@ -151,8 +152,12 @@ func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
 		switch b[0] {
 		case 1: // ^A
 			return keyHome, b[1:]
+		case 2: // ^B
+			return keyLeft, b[1:]
 		case 5: // ^E
 			return keyEnd, b[1:]
+		case 6: // ^F
+			return keyRight, b[1:]
 		case 8: // ^H
 			return keyBackspace, b[1:]
 		case 11: // ^K
@@ -738,6 +743,9 @@ func (t *Terminal) readLine() (line string, err error) {
 						return "", io.EOF
 					}
 				}
+				if key == keyCtrlC {
+					return "", io.EOF
+				}
 				if key == keyPasteStart {
 					t.pasteActive = true
 					if len(t.line) == 0 {