Bump to Buildah 1.16.0-dev in upstream

Bump Buildah to v1.16.0-dev in the upstream branch
of Podman.  This will allow us to get a number of new
issues into the upstream branch for use.  The version of
Buildah will need to be bumped to v1.16.0 and then
vendored into Podman before we release Podman v2.0

Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>

1 files changed, 251 insertions, 0 deletions

diff --git a/vendor/go.mozilla.org/pkcs7/ber.go b/vendor/go.mozilla.org/pkcs7/ber.go
new file mode 100644
index 000000000..585256739
--- /dev/null
+++ b/vendor/go.mozilla.org/pkcs7/ber.go
@@ -0,0 +1,251 @@
+package pkcs7
+
+import (
+	"bytes"
+	"errors"
+)
+
+var encodeIndent = 0
+
+type asn1Object interface {
+	EncodeTo(writer *bytes.Buffer) error
+}
+
+type asn1Structured struct {
+	tagBytes []byte
+	content  []asn1Object
+}
+
+func (s asn1Structured) EncodeTo(out *bytes.Buffer) error {
+	//fmt.Printf("%s--> tag: % X\n", strings.Repeat("| ", encodeIndent), s.tagBytes)
+	encodeIndent++
+	inner := new(bytes.Buffer)
+	for _, obj := range s.content {
+		err := obj.EncodeTo(inner)
+		if err != nil {
+			return err
+		}
+	}
+	encodeIndent--
+	out.Write(s.tagBytes)
+	encodeLength(out, inner.Len())
+	out.Write(inner.Bytes())
+	return nil
+}
+
+type asn1Primitive struct {
+	tagBytes []byte
+	length   int
+	content  []byte
+}
+
+func (p asn1Primitive) EncodeTo(out *bytes.Buffer) error {
+	_, err := out.Write(p.tagBytes)
+	if err != nil {
+		return err
+	}
+	if err = encodeLength(out, p.length); err != nil {
+		return err
+	}
+	//fmt.Printf("%s--> tag: % X length: %d\n", strings.Repeat("| ", encodeIndent), p.tagBytes, p.length)
+	//fmt.Printf("%s--> content length: %d\n", strings.Repeat("| ", encodeIndent), len(p.content))
+	out.Write(p.content)
+
+	return nil
+}
+
+func ber2der(ber []byte) ([]byte, error) {
+	if len(ber) == 0 {
+		return nil, errors.New("ber2der: input ber is empty")
+	}
+	//fmt.Printf("--> ber2der: Transcoding %d bytes\n", len(ber))
+	out := new(bytes.Buffer)
+
+	obj, _, err := readObject(ber, 0)
+	if err != nil {
+		return nil, err
+	}
+	obj.EncodeTo(out)
+
+	// if offset < len(ber) {
+	//	return nil, fmt.Errorf("ber2der: Content longer than expected. Got %d, expected %d", offset, len(ber))
+	//}
+
+	return out.Bytes(), nil
+}
+
+// encodes lengths that are longer than 127 into string of bytes
+func marshalLongLength(out *bytes.Buffer, i int) (err error) {
+	n := lengthLength(i)
+
+	for ; n > 0; n-- {
+		err = out.WriteByte(byte(i >> uint((n-1)*8)))
+		if err != nil {
+			return
+		}
+	}
+
+	return nil
+}
+
+// computes the byte length of an encoded length value
+func lengthLength(i int) (numBytes int) {
+	numBytes = 1
+	for i > 255 {
+		numBytes++
+		i >>= 8
+	}
+	return
+}
+
+// encodes the length in DER format
+// If the length fits in 7 bits, the value is encoded directly.
+//
+// Otherwise, the number of bytes to encode the length is first determined.
+// This number is likely to be 4 or less for a 32bit length. This number is
+// added to 0x80. The length is encoded in big endian encoding follow after
+//
+// Examples:
+//  length | byte 1 | bytes n
+//  0      | 0x00   | -
+//  120    | 0x78   | -
+//  200    | 0x81   | 0xC8
+//  500    | 0x82   | 0x01 0xF4
+//
+func encodeLength(out *bytes.Buffer, length int) (err error) {
+	if length >= 128 {
+		l := lengthLength(length)
+		err = out.WriteByte(0x80 | byte(l))
+		if err != nil {
+			return
+		}
+		err = marshalLongLength(out, length)
+		if err != nil {
+			return
+		}
+	} else {
+		err = out.WriteByte(byte(length))
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+func readObject(ber []byte, offset int) (asn1Object, int, error) {
+	berLen := len(ber)
+	if offset >= berLen {
+		return nil, 0, errors.New("ber2der: offset is after end of ber data")
+	}
+	tagStart := offset
+	b := ber[offset]
+	offset++
+	if offset >= berLen {
+		return nil, 0, errors.New("ber2der: cannot move offset forward, end of ber data reached")
+	}
+	tag := b & 0x1F // last 5 bits
+	if tag == 0x1F {
+		tag = 0
+		for ber[offset] >= 0x80 {
+			tag = tag*128 + ber[offset] - 0x80
+			offset++
+			if offset > berLen {
+				return nil, 0, errors.New("ber2der: cannot move offset forward, end of ber data reached")
+			}
+		}
+		// jvehent 20170227: this doesn't appear to be used anywhere...
+		//tag = tag*128 + ber[offset] - 0x80
+		offset++
+		if offset > berLen {
+			return nil, 0, errors.New("ber2der: cannot move offset forward, end of ber data reached")
+		}
+	}
+	tagEnd := offset
+
+	kind := b & 0x20
+	if kind == 0 {
+		debugprint("--> Primitive\n")
+	} else {
+		debugprint("--> Constructed\n")
+	}
+	// read length
+	var length int
+	l := ber[offset]
+	offset++
+	if offset > berLen {
+		return nil, 0, errors.New("ber2der: cannot move offset forward, end of ber data reached")
+	}
+	hack := 0
+	if l > 0x80 {
+		numberOfBytes := (int)(l & 0x7F)
+		if numberOfBytes > 4 { // int is only guaranteed to be 32bit
+			return nil, 0, errors.New("ber2der: BER tag length too long")
+		}
+		if numberOfBytes == 4 && (int)(ber[offset]) > 0x7F {
+			return nil, 0, errors.New("ber2der: BER tag length is negative")
+		}
+		if (int)(ber[offset]) == 0x0 {
+			return nil, 0, errors.New("ber2der: BER tag length has leading zero")
+		}
+		debugprint("--> (compute length) indicator byte: %x\n", l)
+		debugprint("--> (compute length) length bytes: % X\n", ber[offset:offset+numberOfBytes])
+		for i := 0; i < numberOfBytes; i++ {
+			length = length*256 + (int)(ber[offset])
+			offset++
+			if offset > berLen {
+				return nil, 0, errors.New("ber2der: cannot move offset forward, end of ber data reached")
+			}
+		}
+	} else if l == 0x80 {
+		// find length by searching content
+		markerIndex := bytes.LastIndex(ber[offset:], []byte{0x0, 0x0})
+		if markerIndex == -1 {
+			return nil, 0, errors.New("ber2der: Invalid BER format")
+		}
+		length = markerIndex
+		hack = 2
+		debugprint("--> (compute length) marker found at offset: %d\n", markerIndex+offset)
+	} else {
+		length = (int)(l)
+	}
+	if length < 0 {
+		return nil, 0, errors.New("ber2der: invalid negative value found in BER tag length")
+	}
+	//fmt.Printf("--> length        : %d\n", length)
+	contentEnd := offset + length
+	if contentEnd > len(ber) {
+		return nil, 0, errors.New("ber2der: BER tag length is more than available data")
+	}
+	debugprint("--> content start : %d\n", offset)
+	debugprint("--> content end   : %d\n", contentEnd)
+	debugprint("--> content       : % X\n", ber[offset:contentEnd])
+	var obj asn1Object
+	if kind == 0 {
+		obj = asn1Primitive{
+			tagBytes: ber[tagStart:tagEnd],
+			length:   length,
+			content:  ber[offset:contentEnd],
+		}
+	} else {
+		var subObjects []asn1Object
+		for offset < contentEnd {
+			var subObj asn1Object
+			var err error
+			subObj, offset, err = readObject(ber[:contentEnd], offset)
+			if err != nil {
+				return nil, 0, err
+			}
+			subObjects = append(subObjects, subObj)
+		}
+		obj = asn1Structured{
+			tagBytes: ber[tagStart:tagEnd],
+			content:  subObjects,
+		}
+	}
+
+	return obj, contentEnd + hack, nil
+}
+
+func debugprint(format string, a ...interface{}) {
+	//fmt.Printf(format, a)
+}