auto update: fix usage of --authfile

The --authfile flag has been ignored.  Fix that and add a test to make
sure we won't regress another time.  Requires a new --tls-verify flag
to actually test the code.

Also bump c/common since common/pull/1538 is required to correctly check
for updates.  Note that I had to use the go-mod-edit-replace trick on
c/common as c/buildah would otherwise be moved back to 1.30.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2218315
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

cmd/podman/auto-update.go

@@ -8,6 +8,7 @@ import (
 	"github.com/containers/common/pkg/auth"
 	"github.com/containers/common/pkg/completion"
 	"github.com/containers/common/pkg/report"
+	"github.com/containers/image/v5/types"
 	"github.com/containers/podman/v4/cmd/podman/common"
 	"github.com/containers/podman/v4/cmd/podman/registry"
 	"github.com/containers/podman/v4/pkg/domain/entities"
@@ -17,7 +18,8 @@ import (
 
 type cliAutoUpdateOptions struct {
 	entities.AutoUpdateOptions
-	format string
+	format    string
+	tlsVerify bool
 }
 
 var (
@@ -56,6 +58,8 @@ func init() {
 
 	flags.StringVar(&autoUpdateOptions.format, "format", "", "Change the output format to JSON or a Go template")
 	_ = autoUpdateCommand.RegisterFlagCompletionFunc("format", common.AutocompleteFormat(&autoUpdateOutput{}))
+
+	flags.BoolVarP(&autoUpdateOptions.tlsVerify, "tls-verify", "", true, "Require HTTPS and verify certificates when contacting registries")
 }
 
 func autoUpdate(cmd *cobra.Command, args []string) error {
@@ -64,6 +68,10 @@ func autoUpdate(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("`%s` takes no arguments", cmd.CommandPath())
 	}
 
+	if cmd.Flags().Changed("tls-verify") {
+		autoUpdateOptions.InsecureSkipTLSVerify = types.NewOptionalBool(!autoUpdateOptions.tlsVerify)
+	}
+
 	allReports, failures := registry.ContainerEngine().AutoUpdate(registry.GetContext(), autoUpdateOptions.AutoUpdateOptions)
 	if allReports == nil {
 		return errorhandling.JoinErrors(failures)

docs/source/markdown/options/tls-verify.md

@@ -1,5 +1,5 @@
 ####> This option file is used in:
-####>   podman build, container runlabel, create, kube play, login, manifest add, manifest create, manifest inspect, manifest push, pull, push, run, search
+####>   podman auto update, build, container runlabel, create, kube play, login, manifest add, manifest create, manifest inspect, manifest push, pull, push, run, search
 ####> If file is edited, make sure the changes
 ####> are applicable to all of those.
 #### **--tls-verify**

docs/source/markdown/podman-auto-update.1.md.in

@@ -79,6 +79,7 @@ Please note that detecting if a systemd unit has failed is best done by the cont
 
 For a container to send the READY message via SDNOTIFY it must be created with the `--sdnotify=container` option (see podman-run(1)).  The application running inside the container can then execute `systemd-notify --ready` when ready or use the sdnotify bindings of the specific programming language (e.g., sd_notify(3)).
 
+@@option tls-verify
 
 ## EXAMPLES
 Autoupdate with registry policy

pkg/autoupdate/autoupdate.go

@@ -282,7 +282,10 @@ func (t *task) registryUpdateAvailable(ctx context.Context) (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	options := &libimage.HasDifferentDigestOptions{AuthFilePath: t.authfile}
+	options := &libimage.HasDifferentDigestOptions{
+		AuthFilePath:          t.authfile,
+		InsecureSkipTLSVerify: t.auto.options.InsecureSkipTLSVerify,
+	}
 	return t.image.HasDifferentDigest(ctx, remoteRef, options)
 }
 
@@ -296,6 +299,7 @@ func (t *task) registryUpdate(ctx context.Context) error {
 	pullOptions := &libimage.PullOptions{}
 	pullOptions.AuthFilePath = t.authfile
 	pullOptions.Writer = os.Stderr
+	pullOptions.InsecureSkipTLSVerify = t.auto.options.InsecureSkipTLSVerify
 	if _, err := t.auto.runtime.LibimageRuntime().Pull(ctx, t.rawImageName, config.PullPolicyAlways, pullOptions); err != nil {
 		return err
 	}
@@ -416,8 +420,14 @@ func (u *updater) assembleTasks(ctx context.Context) []error {
 			continue
 		}
 
+		// Use user-specified auth file (CLI or env variable) unless
+		// the container was created with the auth-file label.
+		authfile := u.options.Authfile
+		if fromContainer, ok := labels[define.AutoUpdateAuthfileLabel]; ok {
+			authfile = fromContainer
+		}
 		t := task{
-			authfile:     labels[define.AutoUpdateAuthfileLabel],
+			authfile:     authfile,
 			auto:         u,
 			container:    ctr,
 			policy:       policy,

pkg/domain/entities/auto-update.go

@@ -1,5 +1,7 @@
 package entities
 
+import "github.com/containers/image/v5/types"
+
 // AutoUpdateOptions are the options for running auto-update.
 type AutoUpdateOptions struct {
 	// Authfile to use when contacting registries.
@@ -11,6 +13,9 @@ type AutoUpdateOptions struct {
 	// If restarting the service with the new image failed, restart it
 	// another time with the previous image.
 	Rollback bool
+	// Allow contacting registries over HTTP, or HTTPS with failed TLS
+	// verification. Note that this does not affect other TLS connections.
+	InsecureSkipTLSVerify types.OptionalBool
 }
 
 // AutoUpdateReport contains the results from running auto-update.

test/system/255-auto-update.bats

@@ -4,6 +4,8 @@
 #
 
 load helpers
+load helpers.network
+load helpers.registry
 load helpers.systemd
 
 SNAME_FILE=$BATS_TMPDIR/services
@@ -47,6 +49,7 @@ function teardown() {
 #   4. Generate the service file from the container
 #   5. Remove the origin container
 #   6. Start the container from service
+#   7. Use this fully-qualified image instead of 2)
 function generate_service() {
     local target_img_basename=$1
     local autoupdate=$2
@@ -64,6 +67,9 @@ function generate_service() {
     # IMPORTANT: variable 'cname' is passed (out of scope) up to caller!
     cname=c_${autoupdate//\'/}_$(random_string)
     target_img="quay.io/libpod/$target_img_basename:latest"
+    if [[ -n "$7" ]]; then
+        target_img="$7"
+    fi
 
     if [[ -z "$noTag" ]]; then
         run_podman tag $IMAGE $target_img
@@ -623,4 +629,62 @@ EOF
     systemctl daemon-reload
 }
 
+@test "podman-auto-update --authfile"  {
+    # Test the three supported ways of using authfiles with auto updates
+    # 1) Passed via --authfile CLI flag
+    # 2) Passed via the REGISTRY_AUTH_FILE env variable
+    # 3) Via a label at container creation where 1) and 2) will be ignored
+
+    registry=localhost:${PODMAN_LOGIN_REGISTRY_PORT}
+    image_on_local_registry=$registry/name:tag
+    authfile=$PODMAN_TMPDIR/authfile.json
+
+    # First, start the registry and populate the authfile that we can use for the test.
+    start_registry
+    run_podman login --authfile=$authfile \
+        --tls-verify=false \
+        --username ${PODMAN_LOGIN_USER} \
+        --password ${PODMAN_LOGIN_PASS} \
+        $registry
+
+    run_podman tag $IMAGE $image_on_local_registry
+    run_podman push --tls-verify=false --creds "${PODMAN_LOGIN_USER}:${PODMAN_LOGIN_PASS}" $image_on_local_registry
+
+    # Generate a systemd service with the "registry" auto-update policy running
+    # "top" inside the image we just pushed to the local registry.
+    generate_service "" registry top "" "" "" $image_on_local_registry
+    ctr=$cname
+    _wait_service_ready container-$ctr.service
+
+    run_podman 125 auto-update
+    is "$output" \
+       ".*Error: checking image updates for container .*: x509: .*"
+
+    run_podman 125 auto-update --tls-verify=false
+    is "$output" \
+       ".*Error: checking image updates for container .*: authentication required"
+
+    # Test 1)
+    run_podman auto-update --authfile=$authfile --tls-verify=false --dry-run --format "{{.Unit}},{{.Image}},{{.Updated}},{{.Policy}}"
+    is "$output" "container-$ctr.service,$image_on_local_registry,false,registry" "auto-update works with authfile"
+
+    # Test 2)
+    REGISTRY_AUTH_FILE=$authfile run_podman auto-update --tls-verify=false --dry-run --format "{{.Unit}},{{.Image}},{{.Updated}},{{.Policy}}"
+    is "$output" "container-$ctr.service,$image_on_local_registry,false,registry" "auto-update works with env var"
+    systemctl stop container-$ctr.service
+    run_podman rm -f -t0 --ignore $ctr
+
+    # Create a container with the auth-file label
+    generate_service "" registry top "--label io.containers.autoupdate.authfile=$authfile" "" "" $image_on_local_registry
+    ctr=$cname
+    _wait_service_ready container-$ctr.service
+
+    # Test 3)
+    # Also make sure that the label takes precedence over the CLI flag.
+    run_podman auto-update --authfile=/dev/null --tls-verify=false --dry-run --format "{{.Unit}},{{.Image}},{{.Updated}},{{.Policy}}"
+    is "$output" "container-$ctr.service,$image_on_local_registry,false,registry" "auto-update works with authfile container label"
+    run_podman rm -f -t0 --ignore $ctr
+    run_podman rmi $image_on_local_registry
+}
+
 # vim: filetype=sh