modules/hydro-os-signing/hydro-os-signing.sh

@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+
+# derived from wayblue repository, modified to work with hydro-os
+
+# Tell build process to exit if there are any errors.
+set -euo pipefail
+
+CONTAINER_DIR="/usr/etc/containers"
+ETC_CONTAINER_DIR="/etc/containers"
+MODULE_DIRECTORY="${MODULE_DIRECTORY:-"/tmp/modules"}"
+IMAGE_NAME_FILE="${IMAGE_NAME//\//_}"
+IMAGE_REGISTRY_TITLE=$(echo "$IMAGE_REGISTRY" | cut -d'/' -f2-)
+
+echo "Setting up container signing in policy.json and cosign.yaml for $IMAGE_NAME"
+echo "Registry to write: $IMAGE_REGISTRY"
+
+if ! [ -d "$CONTAINER_DIR" ]; then
+    mkdir -p "$CONTAINER_DIR"
+fi
+
+if ! [ -d "$ETC_CONTAINER_DIR" ]; then
+    mkdir -p "$ETC_CONTAINER_DIR"
+fi
+
+if ! [ -d $CONTAINER_DIR/registries.d ]; then
+   mkdir -p "$CONTAINER_DIR/registries.d"
+fi
+
+if ! [ -d $ETC_CONTAINER_DIR/registries.d ]; then
+   mkdir -p "$ETC_CONTAINER_DIR/registries.d"
+fi
+
+if ! [ -d "/usr/etc/pki/containers" ]; then
+    mkdir -p "/usr/etc/pki/containers"
+fi
+
+if ! [ -d "/etc/pki/containers" ]; then
+    mkdir -p "/etc/pki/containers"
+fi
+
+cp "$MODULE_DIRECTORY/hydro-os-signing/policy.json" $CONTAINER_DIR/policy.json
+cp "$MODULE_DIRECTORY/hydro-os-signing/policy.json" $ETC_CONTAINER_DIR/policy.json
+
+# covering our bases here since /usr/etc is technically unsupported, reevaluate once bootc is the primary deployment tool
+cp "/etc/pki/containers/$IMAGE_NAME.pub" "/usr/etc/pki/containers/$IMAGE_REGISTRY_TITLE.pub"
+cp "/etc/pki/containers/$IMAGE_NAME.pub" "/etc/pki/containers/$IMAGE_REGISTRY_TITLE.pub"
+rm "/etc/pki/containers/$IMAGE_NAME.pub"
+
+POLICY_FILE="$CONTAINER_DIR/policy.json"
+
+jq --arg image_registry "${IMAGE_REGISTRY}" \
+   --arg image_registry_title "${IMAGE_REGISTRY_TITLE}" \
+   '.transports.docker |= 
+    { $image_registry: [
+        {
+            "type": "sigstoreSigned",
+            "keyPath": ("/usr/etc/pki/containers/" + $image_registry_title + ".pub"),
+            "signedIdentity": {
+                "type": "matchRepository"
+            }
+        }
+    ] } + .' "${POLICY_FILE}" > POLICY.tmp
+    
+# covering our bases here since /usr/etc is technically unsupported, reevaluate once bootc is the primary deployment tool
+cp POLICY.tmp /usr/etc/containers/policy.json
+cp POLICY.tmp /etc/containers/policy.json
+rm POLICY.tmp
+
+sed -i "s git.hydrosaber.com/IMAGENAME $IMAGE_REGISTRY g" "$MODULE_DIRECTORY/hydro-os-signing/registry-config.yaml"
+cp "$MODULE_DIRECTORY/hydro-os-signing/registry-config.yaml" "$CONTAINER_DIR/registries.d/$IMAGE_REGISTRY_TITLE.yaml"
+cp "$MODULE_DIRECTORY/hydro-os-signing/registry-config.yaml" "$ETC_CONTAINER_DIR/registries.d/$IMAGE_REGISTRY_TITLE.yaml"
+rm "$MODULE_DIRECTORY/hydro-os-signing/registry-config.yaml"

modules/hydro-os-signing/module.yml

@@ -0,0 +1,4 @@
+name: hydro-os-signing
+shortdesc: The signing module is used to install the required signing policies for cosign image verification with rpm-ostree and bootc. Taken from wayblue.
+example: |
+  type: hydro-os-signing # This sets up the proper policy and signing files for signed images to work fully

modules/hydro-os-signing/policy.json

@@ -0,0 +1,104 @@
+{
+    "default": [
+        {
+            "type": "reject"
+        }
+    ],
+    "transports": {
+        "docker": {
+            "registry.access.redhat.com": [
+                {
+                    "type": "signedBy",
+                    "keyType": "GPGKeys",
+                    "keyPath": "/usr/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release"
+                }
+            ],
+            "registry.redhat.io": [
+                {
+                    "type": "signedBy",
+                    "keyType": "GPGKeys",
+                    "keyPath": "/usr/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release"
+                }
+            ],
+            "quay.io/toolbx-images": [
+                {
+                    "type": "sigstoreSigned",
+                    "keyPath": "/usr/etc/pki/containers/quay.io-toolbx-images.pub",
+                    "signedIdentity": {
+                        "type": "matchRepository"
+                    }
+                }
+            ],
+            "ghcr.io/ublue-os": [
+                {
+                    "type": "sigstoreSigned",
+                    "keyPath": "/usr/etc/pki/containers/ublue-os.pub",
+                    "signedIdentity": {
+                        "type": "matchRepository"
+                    }
+                }
+            ],
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "docker-daemon": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "atomic": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "containers-storage": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "dir": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "oci": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "oci-archive": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "docker-archive": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        },
+        "tarball": {
+            "": [
+                {
+                    "type": "insecureAcceptAnything"
+                }
+            ]
+        }
+    }
+}

modules/hydro-os-signing/registry-config.yaml

@@ -0,0 +1,3 @@
+docker:
+  git.hydrosaber.com/IMAGENAME:
+    use-sigstore-attachments: true

recipes/recipe.yml

@@ -24,5 +24,6 @@ modules:
   - from-file: components/default-flatpak.yml
   - from-file: components/chezmoi-module.yml
 
-  - type: signing # this sets up the proper policy & signing files for signed images to work fully
+  - type: hydro-os-signing
+    source: local
 

recipes/recipe_nvidia.yml

@@ -26,5 +26,6 @@ modules:
   - from-file: components/chezmoi-module.yml
   - type: initramfs
 
-  - type: signing # this sets up the proper policy & signing files for signed images to work fully
+  - type: hydro-os-signing
+    source: local