Test checksums from package create

Signed-off-by: Philip Laine <philip.laine@gmail.com>

.github/workflows/test-package-create.yml

@@ -0,0 +1,48 @@
+name: Test Package Create Checksums
+
+on:
+  pull_request:
+  merge_group:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: package-create-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test-checksums:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
+
+      - uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5.0.0
+        with:
+          go-version-file: go.mod
+
+      - name: Build Zarf
+        run: make build
+
+      - name: Build examples
+        run: make build-examples ARCH=amd64
+
+      - name: Compare checksums
+        run: |
+          set -e
+
+          for f in hack/examples-checksums/*.txt
+          do 
+            NAME=$(basename $f .txt)
+            CHECKSUM=$(tar Oxf build/$NAME.tar.zst checksums.txt | grep -v sboms.tar)
+            EXPECTED_CHECKSUM=$(cat $f | grep -v sboms.tar)
+            if [[ "$CHECKSUM" != "$EXPECTED_CHECKSUM" ]]
+            then
+              echo "Package $f does not have expected checksum."
+              echo "$CHECKSUM"
+              echo "-----"
+              echo "$EXPECTED_CHECKSUM"
+              exit 1
+            fi
+          done

hack/examples-checksums/zarf-package-component-actions-amd64.txt

@@ -0,0 +1,3 @@
+cfd67a2aeebf13c632207183e1d5cd57146a28aa22b5ddf8896c6ce593c627c2 components/on-deploy-with-wait-action.tar
+d26e18c92ff9f93b296fad6be153f02d4a746f0ec44dbcf4c526f1e121ffe4ec components/on-remove.tar
+fbfcd7215652819a3b03084d2a12ca7594d8c610ac6e2ebed2f229a0019a52e2 components/on-deploy-with-template-use-of-variable.tar

hack/examples-checksums/zarf-package-component-choice-amd64.txt

@@ -0,0 +1,2 @@
+fa862d90928e52ccc9faa69b5eae73bb97fa5acb76407ba6a177eb338f7d692d components/first-choice.tar
+fb99083f2881d87f556c1a7a163876aeaaf1e6094526ff50b2775fc85f8858a3 components/second-choice.tar

hack/examples-checksums/zarf-package-dos-games-amd64-1.1.0.txt

@@ -0,0 +1,8 @@
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+4752b809555b8767401dfd39638f256c2373763a1f2cc421012301bb48481e6d images/blobs/sha256/4752b809555b8767401dfd39638f256c2373763a1f2cc421012301bb48481e6d
+49f63464352d7b53ceea3b60b9cc764c1a810b28217ee9f13ab7f974bb3ed968 components/baseline.tar
+4f4fb700ef54461cfa02571ae0db9a0dc1e0cdb5577484a6d75e68dc38e8acc1 images/blobs/sha256/4f4fb700ef54461cfa02571ae0db9a0dc1e0cdb5577484a6d75e68dc38e8acc1
+b66dbb27a73334db6ac9c030475837bd7f4472d835c72b2360534b203edce6cb images/oci-layout
+c7ee390ce7fc9b525429312617f5fbff5fe195544c1d95b44b72330bff15a615 images/index.json
+cc1421ef2ded4a559feaefe8dc266488d60675fcc995db7e51f0b0a6d893e010 images/blobs/sha256/cc1421ef2ded4a559feaefe8dc266488d60675fcc995db7e51f0b0a6d893e010
+e6886dc0b01f09d19480a3270fd9e7c4b261346cee9490b881b36edf21c7e722 images/blobs/sha256/e6886dc0b01f09d19480a3270fd9e7c4b261346cee9490b881b36edf21c7e722

hack/examples-checksums/zarf-package-manifests-amd64-0.0.1.txt

@@ -0,0 +1,27 @@
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+27e17b7ec145d38d0be7b5837639a1206f2f3902f7831a6060d0b897f144decd images/index.json
+295c7be079025306c4f1d65997fcf7adb411c88f139ad1d34b537164aa060369 images/blobs/sha256/295c7be079025306c4f1d65997fcf7adb411c88f139ad1d34b537164aa060369
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+45ef08258efc940f6336384ae1f35224b5bdf89a3b7abbb5effcbb6c5d62cabe components/nginx-remote.tar
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+f59dcac0742ce66d707aed956c25cd0fc20d162ecaca308637197eac1cef13fc components/httpd-local.tar

hack/examples-checksums/zarf-package-variables-amd64.txt

@@ -0,0 +1,12 @@
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+4b2a24be75c4766f2d20892ddb84841e3773d0e26249ee57eed530da19c07bb2 components/variables-with-nginx.tar
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+a8a737eacb28af35791c2a444d8095ca3d493ba31eca78cd57a6fe3cced79154 components/variables-with-terraform.tar
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hack/examples-checksums/zarf-package-yolo-amd64.txt

@@ -0,0 +1 @@
+b31cd4195a94c235f6560274fac9efb9934c517381d16593592d02f212e1cd70 components/yolo-games.tar

src/pkg/packager/creator/normal.go

@@ -206,6 +206,12 @@ func (pc *PackageCreator) Assemble(ctx context.Context, dst *layout.PackagePaths
 				sbomImageList = append(sbomImageList, info)
 			}
 		}
+
+		// Sort images index to make build reproducible.
+		err = utils.SortImagesIndex(dst.Images.Base)
+		if err != nil {
+			return err
+		}
 	}
 
 	// Ignore SBOM creation if the flag is set.

src/pkg/utils/image.go

@@ -9,6 +9,8 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"slices"
+	"strings"
 
 	"github.com/defenseunicorns/pkg/helpers/v2"
 	v1 "github.com/google/go-containerregistry/pkg/v1"
@@ -102,3 +104,25 @@ func OnlyHasImageLayers(img v1.Image) (bool, error) {
 	}
 	return true, nil
 }
+
+// SortImagesIndex sorts the index.json by digest.
+func SortImagesIndex(ociPath string) error {
+	indexPath := filepath.Join(ociPath, "index.json")
+	b, err := os.ReadFile(indexPath)
+	if err != nil {
+		return err
+	}
+	var index ocispec.Index
+	err = json.Unmarshal(b, &index)
+	if err != nil {
+		return err
+	}
+	slices.SortFunc(index.Manifests, func(a, b ocispec.Descriptor) int {
+		return strings.Compare(string(a.Digest), string(b.Digest))
+	})
+	b, err = json.Marshal(index)
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(indexPath, b, helpers.ReadWriteUser)
+}