compat handlers: add X-Registry-Auth header support

 * Support the `X-Registry-Auth` http-request header.

 * The content of the header is a base64 encoded JSON payload which can
   either be a single auth config or a map of auth configs (user+pw or
   token) with the corresponding registries being the keys.  Vanilla
   Docker, projectatomic Docker and the bindings are transparantly
   supported.

 * Add a hidden `--registries-conf` flag.  Buildah exposes the same
   flag, mostly for testing purposes.

 * Do all credential parsing in the client (i.e., `cmd/podman`) pass
   the username and password in the backend instead of unparsed
   credentials.

 * Add a `pkg/auth` which handles most of the heavy lifting.

 * Go through the authentication-handling code of most commands, bindings
   and endpoints.  Migrate them to the new code and fix issues as seen.
   A final evaluation and more tests is still required *after* this
   change.

 * The manifest-push endpoint is missing certain parameters and should
   use the ABI function instead.  Adding auth-support isn't really
   possible without these parts working.

 * The container commands and endpoints (i.e., create and run) have not
   been changed yet.  The APIs don't yet account for the authfile.

 * Add authentication tests to `pkg/bindings`.

Fixes: #6384
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

1 files changed, 173 insertions, 0 deletions

diff --git a/vendor/github.com/vbauerster/mpb/v5/bar_filler_bar.go b/vendor/github.com/vbauerster/mpb/v5/bar_filler_bar.go
new file mode 100644
index 000000000..637bd88ca
--- /dev/null
+++ b/vendor/github.com/vbauerster/mpb/v5/bar_filler_bar.go
@@ -0,0 +1,173 @@
+package mpb
+
+import (
+	"bytes"
+	"io"
+	"unicode/utf8"
+
+	"github.com/mattn/go-runewidth"
+	"github.com/vbauerster/mpb/v5/decor"
+	"github.com/vbauerster/mpb/v5/internal"
+)
+
+const (
+	rLeft = iota
+	rFill
+	rTip
+	rSpace
+	rRight
+	rRevTip
+	rRefill
+)
+
+// DefaultBarStyle is a string containing 7 runes.
+// Each rune is a building block of a progress bar.
+//
+//	'1st rune' stands for left boundary rune
+//
+//	'2nd rune' stands for fill rune
+//
+//	'3rd rune' stands for tip rune
+//
+//	'4th rune' stands for space rune
+//
+//	'5th rune' stands for right boundary rune
+//
+//	'6th rune' stands for reverse tip rune
+//
+//	'7th rune' stands for refill rune
+//
+const DefaultBarStyle string = "[=>-]<+"
+
+type barFiller struct {
+	format  [][]byte
+	rwidth  []int
+	tip     []byte
+	refill  int64
+	reverse bool
+	flush   func(io.Writer, *space, [][]byte)
+}
+
+type space struct {
+	space  []byte
+	rwidth int
+	count  int
+}
+
+// NewBarFiller constucts mpb.BarFiller, to be used with *Progress.Add(...) *Bar method.
+func NewBarFiller(style string, reverse bool) BarFiller {
+	bf := &barFiller{
+		format:  make([][]byte, len(DefaultBarStyle)),
+		rwidth:  make([]int, len(DefaultBarStyle)),
+		reverse: reverse,
+	}
+	bf.SetStyle(style)
+	return bf
+}
+
+func (s *barFiller) SetStyle(style string) {
+	if !utf8.ValidString(style) {
+		panic("invalid bar style")
+	}
+	if style == "" {
+		style = DefaultBarStyle
+	}
+	src := make([][]byte, utf8.RuneCountInString(style))
+	i := 0
+	for _, r := range style {
+		s.rwidth[i] = runewidth.RuneWidth(r)
+		src[i] = []byte(string(r))
+		i++
+	}
+	copy(s.format, src)
+	s.SetReverse(s.reverse)
+}
+
+func (s *barFiller) SetReverse(reverse bool) {
+	if reverse {
+		s.tip = s.format[rRevTip]
+		s.flush = reverseFlush
+	} else {
+		s.tip = s.format[rTip]
+		s.flush = regularFlush
+	}
+	s.reverse = reverse
+}
+
+func (s *barFiller) Fill(w io.Writer, reqWidth int, stat decor.Statistics) {
+	width := internal.WidthForBarFiller(reqWidth, stat.AvailableWidth)
+
+	if brackets := s.rwidth[rLeft] + s.rwidth[rRight]; width < brackets {
+		return
+	} else {
+		// don't count brackets as progress
+		width -= brackets
+	}
+	w.Write(s.format[rLeft])
+	defer w.Write(s.format[rRight])
+
+	cwidth := int(internal.PercentageRound(stat.Total, stat.Current, width))
+	space := &space{
+		space:  s.format[rSpace],
+		rwidth: s.rwidth[rSpace],
+		count:  width - cwidth,
+	}
+
+	index, refill := 0, 0
+	bb := make([][]byte, cwidth)
+
+	if cwidth > 0 && cwidth != width {
+		bb[index] = s.tip
+		cwidth -= s.rwidth[rTip]
+		index++
+	}
+
+	if stat.Refill > 0 {
+		refill = int(internal.PercentageRound(stat.Total, int64(stat.Refill), width))
+		if refill > cwidth {
+			refill = cwidth
+		}
+		cwidth -= refill
+	}
+
+	for cwidth > 0 {
+		bb[index] = s.format[rFill]
+		cwidth -= s.rwidth[rFill]
+		index++
+	}
+
+	for refill > 0 {
+		bb[index] = s.format[rRefill]
+		refill -= s.rwidth[rRefill]
+		index++
+	}
+
+	if cwidth+refill < 0 || space.rwidth > 1 {
+		buf := new(bytes.Buffer)
+		s.flush(buf, space, bb[:index])
+		io.WriteString(w, runewidth.Truncate(buf.String(), width, "…"))
+		return
+	}
+
+	s.flush(w, space, bb)
+}
+
+func regularFlush(w io.Writer, space *space, bb [][]byte) {
+	for i := len(bb) - 1; i >= 0; i-- {
+		w.Write(bb[i])
+	}
+	for space.count > 0 {
+		w.Write(space.space)
+		space.count -= space.rwidth
+	}
+}
+
+func reverseFlush(w io.Writer, space *space, bb [][]byte) {
+	for space.count > 0 {
+		w.Write(space.space)
+		space.count -= space.rwidth
+	}
+	for i := 0; i < len(bb); i++ {
+		w.Write(bb[i])
+	}
+}