feat: Allow users to override secure boot key and password

.github/workflows/build-container-image.yml

@@ -1,9 +1,14 @@
 ---
 name: Build Container Image
 on:
+  merge_group:
   pull_request:
     branches:
       - main
+    paths-ignore:
+      - '*.md'
+      - 'LICENSE'
+      - 'CODEOWNERS'
   push:
     branches:
       - main

.github/workflows/test-iso.yml

@@ -10,6 +10,7 @@ on:
       - '*.md'
       - 'LICENSE'
       - 'CODEOWNERS'
+  workflow_dispatch:
 
 jobs:
   build-and-push-iso:
@@ -18,15 +19,30 @@ jobs:
     container:
       image: fedora:39
       options: "--privileged"
+      volumes:
+        - "/:/host"
     permissions:
       contents: read
       packages: write
     strategy:
       fail-fast: false
       matrix:
-        version: 
+        version:
           - 38
           - 39
+        secure_boot:
+          - true
+          - false
+        include:
+          - secure_boot: true
+            SECURE_BOOT_KEY_URL: 'https://github.com/ublue-os/akmods/raw/main/certs/public_key.der'
+            ENROLLMENT_PASSWORD: 'ublue-os'
+            SECURE_BOOT_STRING: '-secure'
+          - secure_boot: false
+            SECURE_BOOT_KEY_URL: ''
+            ENROLLMENT_PASSWORD: ''
+            SECURE_BOOT_STRING: ''
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -41,6 +57,18 @@ jobs:
           VERSION: ${{ matrix.version }}
           ACTION_REPO: ${{ github.repository }}
           ACTION_REF: ${{ github.ref }}
+          SECURE_BOOT_KEY_URL: ${{ matrix.SECURE_BOOT_KEY_URL }}
+          ENROLLMENT_PASSWORD: ${{ matrix.ENROLLMENT_PASSWORD }}
+
+      - name: Upload ISO as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: base-main-${{ matrix.version }}${{ matrix.SECURE_BOOT_STRING }}.iso
+          path: end_iso/*
+          if-no-files-found: error
+          retention-days: 0
+          compression-level: 0
+          overwrite: true
 
   check:
     name: Check build successful
@@ -55,4 +83,4 @@ jobs:
         run: exit 1
       - name: Exit
         shell: bash
-        run: exit 0
+        run: exit 0

Containerfile

@@ -13,6 +13,8 @@ ENV IMAGE_TAG="${VERSION}"
 ENV VARIANT="Kinoite"
 ENV VERSION="${VERSION}"
 ENV WEB_UI="false"
+ENV SECURE_BOOT_KEY_URL=""
+ENV ENROLLMENT_PASSWORD="ublue-os"
 
 COPY / /isogenerator
 WORKDIR /isogenerator

Makefile

@@ -8,6 +8,8 @@ IMAGE_TAG = $(VERSION)
 EXTRA_BOOT_PARAMS =
 VARIANT = Kinoite
 WEB_UI = false
+ENROLLMENT_PASSWORD = ublue-os
+SECURE_BOOT_KEY_URL =
 
 # Generated vars
 ## Formatting = _UPPERCASE
@@ -50,6 +52,14 @@ lorax_templates/%.tmpl: lorax_templates/%.tmpl.in
 boot.iso: lorax_templates/set_installer.tmpl lorax_templates/configure_upgrades.tmpl
 	rm -Rf $(_BASE_DIR)/results
 
+	# Set the enrollment password
+	sed 's/@ENROLLMENT_PASSWORD@/$(ENROLLMENT_PASSWORD)/' $(_BASE_DIR)/scripts/enroll-secureboot-key.sh.in > $(_BASE_DIR)/scripts/enroll-secureboot-key.sh
+
+	# Download the secure boot key
+	if [ -n "$(SECURE_BOOT_KEY_URL)" ]; then\
+    curl --fail -L -o $(_BASE_DIR)/sb_pubkey.der $(SECURE_BOOT_KEY_URL);\
+	fi
+
 	# Remove the "Test this media & install" menu entry
 	sed -i '/menuentry '\''Test this media & install @PRODUCT@ @VERSION@'\'' --class fedora --class gnu-linux --class gnu --class os {/,/}/d' /usr/share/lorax/templates.d/99-generic/config_files/x86/grub2-bios.cfg
 	sed -i '/menuentry '\''Test this media & install @PRODUCT@ @VERSION@'\'' --class fedora --class gnu-linux --class gnu --class os {/,/}/d' /usr/share/lorax/templates.d/99-generic/config_files/x86/grub2-efi.cfg
@@ -68,6 +78,7 @@ boot.iso: lorax_templates/set_installer.tmpl lorax_templates/configure_upgrades.
 	sed -i 's/linux @KERNELPATH@ @ROOT@ inst.rescue quiet/linux @KERNELPATH@ @ROOT@ inst.rescue quiet $(EXTRA_BOOT_PARAMS)/g' /usr/share/lorax/templates.d/99-generic/config_files/x86/grub2-bios.cfg
 	sed -i 's/linuxefi @KERNELPATH@ @ROOT@ inst.rescue quiet/linuxefi @KERNELPATH@ @ROOT@ inst.rescue quiet $(EXTRA_BOOT_PARAMS)/g' /usr/share/lorax/templates.d/99-generic/config_files/x86/grub2-efi.cfg
 
+	# Build boot.iso
 	lorax -p $(IMAGE_NAME) -v $(VERSION) -r $(VERSION) -t $(VARIANT) \
           --isfinal --buildarch=$(ARCH) --volid=$(_VOLID) \
           $(_LORAX_ARGS) \

README.md

@@ -37,19 +37,24 @@ sudo podman run --rm --privileged --volume .:/isogenerator/output -e VERSION=39
 ## Customizing
 The following variables can be used to customize the create image.
 
-| Variable          | Description                                              | Default Value          |
-| ----------------- | -------------------------------------------------------- | ---------------------- |
-| ARCH              | Architecture for image to build                          | x86_64                 |
-| VERSION           | Fedora version of installer to build                     | 39                     |
-| IMAGE_REPO        | Repository containing the source container image         | ghcr.io/ublue-os       |
-| IMAGE_NAME        | Name of the source container image                       | base-main              |
-| IMAGE_TAG         | Tag of the source container image                        | *VERSION*              |
-| EXTRA_BOOT_PARAMS | Extra params used by grub to boot the anaconda installer | \[empty\]              |
-| VARIANT           | Source container variant\*                               | Kinoite                |
-| WEB_UI            | Enable Anaconda WebUI (experimental)                     | false                  |
-
-Available options for VARIANT can be found by running `dnf provides system-release`. 
-Variant will be the third item in the package name. Example: `fedora-release-kinoite-39-34.noarch` will be kinoite
+| Variable            | Description                                                  | Default Value          |
+| -----------------   | ------------------------------------------------------------ | ---------------------- |
+| ARCH                | Architecture for image to build                              | x86_64                 |
+| VERSION             | Fedora version of installer to build                         | 39                     |
+| IMAGE_REPO          | Repository containing the source container image             | ghcr.io/ublue-os       |
+| IMAGE_NAME          | Name of the source container image                           | base-main              |
+| IMAGE_TAG           | Tag of the source container image                            | *VERSION*              |
+| EXTRA_BOOT_PARAMS   | Extra params used by grub to boot the anaconda installer     | \[empty\]              |
+| VARIANT             | Source container variant\*                                   | Kinoite                |
+| WEB_UI              | Enable Anaconda WebUI (experimental)                         | false                  |
+| ENROLLMENT_PASSWORD | Password used to enroll secure boot key into BIOS\*\*        | isogenerator           |
+| SECURE_BOOT_KEY_URL | URL used to download your secure boot key for enrollment\*\* | \[empty\]              |
+
+\*Available options for VARIANT can be found by running `dnf provides system-release`. Variant will be the third item in the package name. Example: `fedora-release-kinoite-39-34.noarch` will be kinoite
+
+\*\*NOTE: ENROLLMENT_PASSWORD and SECURE_BOOT_KEY_URL are not required. They are only required if you are creating specific kernel modules or if you are using Universal Blue Kernel Modules.
+
+Our public key for our kmods is located here: https://github.com/ublue-os/akmods/raw/main/certs/public_key.der
 
 ## VSCode Dev Container
 There is a dev container configuration provided for development. By default it will use the existing container image available at `ghcr.io/ublue-os/isogenerator`, however, you can have it build a new image by editing `.devcontainer/devcontainer.json` and replacing `image` with `build`. `Ctrl+/` can be used to comment and uncomment blocks of code within VSCode.

action.yml

@@ -32,6 +32,12 @@ inputs:
     description: Enable Anaconda WebUI
     required: true
     default: "false"
+  ENROLLMENT_PASSWORD:
+    description: Used for supporting secure boot (requires SECURE_BOOT_KEY_URL to be defined)
+    required: false
+  SECURE_BOOT_KEY_URL:
+    description: Secure boot key that is installed from URL location
+    required: false
   ACTION_REPO:
     description: Repository with the build action
     required: false
@@ -107,7 +113,9 @@ runs:
           VARIANT=${{ inputs.VARIANT }} \
           VERSION=${{ inputs.VERSION }} \
           WEB_UI=${{ inputs.WEB_UI }} \
-          EXTRA_BOOT_PARAMS=${{ inputs.EXTRA_BOOT_PARAMS }}
+          EXTRA_BOOT_PARAMS=${{ inputs.EXTRA_BOOT_PARAMS }} \
+          SECURE_BOOT_KEY_URL=${{ inputs.SECURE_BOOT_KEY_URL }} \
+          ENROLLMENT_PASSWORD=${{ inputs.ENROLLMENT_PASSWORD }}
 
     - name: Create deploy.iso and generate sha256 checksum
       shell: bash
@@ -123,13 +131,3 @@ runs:
         mkdir end_iso
         sha256sum ${{ inputs.IMAGE_NAME }}-${{ inputs.IMAGE_TAG || inputs.VERSION }}.iso > ./end_iso/${{ inputs.IMAGE_NAME }}-${{ inputs.IMAGE_TAG || inputs.VERSION }}-CHECKSUM
         mv ${{ inputs.IMAGE_NAME }}-${{ inputs.IMAGE_TAG || inputs.VERSION }}.iso end_iso/
-
-    - name: Upload ISO as artifact
-      uses: actions/upload-artifact@v4
-      with:
-        name: ${{ inputs.IMAGE_NAME }}-${{ inputs.IMAGE_TAG || inputs.VERSION }}.iso
-        path: end_iso/*
-        if-no-files-found: error
-        retention-days: 0
-        compression-level: 0
-        overwrite: true

entrypoint.sh

@@ -3,6 +3,15 @@
 set -eu
 
 # pre-create loop devices manually. In containers we can't use losetup for that.
-mknod -m 0660 /dev/loop0 b 7 0  2> /dev/null || true
+mknod -m 0660 /dev/loop0 b 7 0 2>/dev/null || true
 
-make output/${IMAGE_NAME}-${IMAGE_TAG}.iso ARCH=${ARCH} VERSION=${VERSION} IMAGE_REPO=${IMAGE_REPO} IMAGE_NAME=${IMAGE_NAME} IMAGE_TAG=${IMAGE_TAG} VARIANT=${VARIANT} WEB_UI=${WEB_UI}
+make output/${IMAGE_NAME}-${IMAGE_TAG}.iso \
+	ARCH=${ARCH} \
+	VERSION=${VERSION} \
+	IMAGE_REPO=${IMAGE_REPO} \
+	IMAGE_NAME=${IMAGE_NAME} \
+	IMAGE_TAG=${IMAGE_TAG} \
+	VARIANT=${VARIANT} \
+	WEB_UI=${WEB_UI} \
+	SECURE_BOOT_KEY_URL=${SECURE_BOOT_KEY_URL} \
+	ENROLLMENT_PASSWORD=${ENROLLMENT_PASSWORD}

scripts/enroll-secureboot-key.sh → scripts/enroll-secureboot-key.sh.in

@@ -2,23 +2,23 @@
 
 set -oue pipefail
 
-readonly SECUREBOOT_KEY="/run/install/repo/ublue-os-akmods-public-key.der"
-readonly ENROLLMENT_PASSWORD="ublue-os"
-
-SYS_ID="$(cat /sys/devices/virtual/dmi/id/product_name)"
-if [[ ":Jupiter:Galileo:" =~ ":$SYS_ID:" ]]; then
-	echo "Steam Deck hardware detected. Skipping key enrollment."
-	exit 0
-fi
+readonly ENROLLMENT_PASSWORD=@ENROLLMENT_PASSWORD@
+readonly SECUREBOOT_KEY="/run/install/repo/sb_pubkey.der"
 
 if [[ ! -d "/sys/firmware/efi" ]]; then
 	echo "EFI mode not detected. Skipping key enrollment."
 	exit 0
 fi
 
 if [[ ! -f "${SECUREBOOT_KEY}" ]]; then
-	echo "Secure boot key not found: ${SECUREBOOT_KEY}"
-	exit 1
+	echo "Secure boot key not provided: ${SECUREBOOT_KEY}"
+	exit 0
+fi
+
+SYS_ID="$(cat /sys/devices/virtual/dmi/id/product_name)"
+if [[ ":Jupiter:Galileo:" =~ ":$SYS_ID:" ]]; then
+	echo "Steam Deck hardware detected. Skipping key enrollment."
+	exit 0
 fi
 
 mokutil --timeout -1 || :

xorriso/gen_input.sh.in

@@ -5,8 +5,10 @@ echo "-outdev $(pwd)/output/@IMAGE_NAME@-@IMAGE_TAG@.iso"
 echo "-boot_image any replay"
 echo "-joliet on"
 echo "-compliance joliet_long_names"
-echo "-map $(pwd)/scripts/ublue-os-akmods-public-key.der ublue-os-akmods-public-key.der"
-echo "-chmod 0444 /ublue-os-akmods-public-key.der"
+if [ -f $(pwd)/sb_pubkey.der ]; then
+	echo "-map $(pwd)/sb_pubkey.der sb_pubkey.der"
+	echo "-chmod 0444 /sb_pubkey.der"
+fi
 echo "-map $(pwd)/scripts/enroll-secureboot-key.sh enroll-secureboot-key.sh"
 echo "-chmod 0777 enroll-secureboot-key.sh"
 cd container