remote push: show copy progress

`podman-remote push` has shown absolutely no progress at all. Fix that
by doing essentially the same as the remote-pull code does.

The get-free-out-of-jail-card for backwards compatibility is to let the
`quiet` parameter default to true.  Since the --quioet flag wasn't
working before either, older Podman clients do not set it.

Also add regression tests to make sure we won't regress again.

Fixes: #11554
Fixes: #14971
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/pkg/bindings/images/push.go b/pkg/bindings/images/push.go
new file mode 100644
index 000000000..8db3726e6
--- /dev/null
+++ b/pkg/bindings/images/push.go
@@ -0,0 +1,96 @@
+package images
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strconv"
+
+	imageTypes "github.com/containers/image/v5/types"
+	"github.com/containers/podman/v4/pkg/auth"
+	"github.com/containers/podman/v4/pkg/bindings"
+	"github.com/containers/podman/v4/pkg/domain/entities"
+)
+
+// Push is the binding for libpod's endpoints for push images.  Note that
+// `source` must be a referring to an image in the remote's container storage.
+// The destination must be a reference to a registry (i.e., of docker transport
+// or be normalized to one).  Other transports are rejected as they do not make
+// sense in a remote context.
+func Push(ctx context.Context, source string, destination string, options *PushOptions) error {
+	if options == nil {
+		options = new(PushOptions)
+	}
+	conn, err := bindings.GetClient(ctx)
+	if err != nil {
+		return err
+	}
+	header, err := auth.MakeXRegistryAuthHeader(&imageTypes.SystemContext{AuthFilePath: options.GetAuthfile()}, options.GetUsername(), options.GetPassword())
+	if err != nil {
+		return err
+	}
+
+	params, err := options.ToParams()
+	if err != nil {
+		return err
+	}
+	// SkipTLSVerify is special.  We need to delete the param added by
+	// toparams and change the key and flip the bool
+	if options.SkipTLSVerify != nil {
+		params.Del("SkipTLSVerify")
+		params.Set("tlsVerify", strconv.FormatBool(!options.GetSkipTLSVerify()))
+	}
+	params.Set("destination", destination)
+
+	path := fmt.Sprintf("/images/%s/push", source)
+	response, err := conn.DoRequest(ctx, nil, http.MethodPost, path, params, header)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+
+	if !response.IsSuccess() {
+		return response.Process(err)
+	}
+
+	// Historically push writes status to stderr
+	writer := io.Writer(os.Stderr)
+	if options.GetQuiet() {
+		writer = ioutil.Discard
+	}
+
+	dec := json.NewDecoder(response.Body)
+	for {
+		var report entities.ImagePushReport
+		if err := dec.Decode(&report); err != nil {
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			return err
+		}
+
+		select {
+		case <-response.Request.Context().Done():
+			break
+		default:
+			// non-blocking select
+		}
+
+		switch {
+		case report.Stream != "":
+			fmt.Fprint(writer, report.Stream)
+		case report.Error != "":
+			// There can only be one error.
+			return errors.New(report.Error)
+		default:
+			return fmt.Errorf("failed to parse push results stream, unexpected input: %v", report)
+		}
+	}
+
+	return nil
+}