ci: add scripts/sign-linux-tarball.sh for GPG signing

Adds `scripts/sign-linux-file.sh` which expectes the following variables set:

* `LINUX_GPG_PRIVATE_KEY_FILE` - Path to the GPG export of private key.
* `LINUX_GPG_PRIVATE_KEY_PASS` - Password necessary to use the private key.

Given a file it creates a file with a `.asc` suffix containing the signature:
```
 > wget -q https://status-im-prs.ams3.digitaloceanspaces.com/StatusIm-210809-104514-156806-pr.tar.gz

 > tar xvf StatusIm-210809-104514-156806-pr.tar.gz
StatusIm-210809-104514-156806-pr.AppImage
StatusIm-210809-104514-156806-pr.AppImage.asc

 > gpg --verify StatusIm-210809-104514-156806-pr.AppImage.asc
gpg: assuming signed data in 'StatusIm-210809-104514-156806-pr.AppImage'
gpg: Signature made Mon 09 Aug 2021 12:54:49 PM CEST using RSA key ID E20B4DFD
gpg: Good signature from "Status.im Devel Signing (GPG key for signing Status.im development builds.) <devel@status.im>" [ultimate]
Primary key fingerprint: BBF0 5F92 536B ED19 30A9  FD44 009F B3BF E20B 4DFD
```

Issue: https://github.com/status-im/infra-ci/issues/25
Requires: https://github.com/status-im/status-jenkins-lib/pull/32

Signed-off-by: Jakub Sokołowski <jakub@status.im>

Makefile

@@ -248,12 +248,13 @@ $(APPIMAGE_TOOL):
 	echo -e "\e[92mFetching:\e[39m appimagetool"
 	rm -rf tmp/linux
 	mkdir -p tmp/linux/tools
-	wget https://github.com/AppImage/AppImageKit/releases/download/continuous/$(_APPIMAGE_TOOL)
+	wget -nv https://github.com/AppImage/AppImageKit/releases/download/continuous/$(_APPIMAGE_TOOL)
 	mv $(_APPIMAGE_TOOL) tmp/linux/tools/
 	chmod +x $(APPIMAGE_TOOL)
 
 STATUS_CLIENT_APPIMAGE ?= pkg/Status.AppImage
 STATUS_CLIENT_TARBALL ?= pkg/Status.tar.gz
+STATUS_CLIENT_TARBALL_FULL ?= $(shell realpath $(STATUS_CLIENT_TARBALL))
 
 $(STATUS_CLIENT_APPIMAGE): override RESOURCES_LAYOUT := -d:production
 $(STATUS_CLIENT_APPIMAGE): nim_status_client $(APPIMAGE_TOOL) nim-status.desktop
@@ -288,11 +289,18 @@ $(STATUS_CLIENT_APPIMAGE): nim_status_client $(APPIMAGE_TOOL) nim-status.desktop
 
 	mkdir -p pkg
 	$(APPIMAGE_TOOL) tmp/linux/dist $(STATUS_CLIENT_APPIMAGE)
+# if LINUX_GPG_PRIVATE_KEY_FILE is not set then we don't generate a signature
+ifdef LINUX_GPG_PRIVATE_KEY_FILE
+	scripts/sign-linux-file.sh $(STATUS_CLIENT_APPIMAGE)
+endif
 
 $(STATUS_CLIENT_TARBALL): $(STATUS_CLIENT_APPIMAGE)
-	tar czvf $(STATUS_CLIENT_TARBALL) \
+	cd $(shell dirname $(STATUS_CLIENT_APPIMAGE)) && \
-		-C $(shell dirname $(STATUS_CLIENT_APPIMAGE)) \
+	tar czvf $(STATUS_CLIENT_TARBALL_FULL) --ignore-failed-read \
-		$(shell basename $(STATUS_CLIENT_APPIMAGE))
+		$(shell basename $(STATUS_CLIENT_APPIMAGE)){,.asc}
+ifdef LINUX_GPG_PRIVATE_KEY_FILE
+	scripts/sign-linux-file.sh $(STATUS_CLIENT_TARBALL)
+endif
 
 DMG_TOOL := node_modules/.bin/create-dmg
 

ci/Dockerfile

@@ -14,8 +14,13 @@ RUN export DEBIAN_FRONTEND=noninteractive \
  && sudo apt install -yq software-properties-common \
  && sudo add-apt-repository -y ppa:git-core/ppa \
  && sudo apt update -yq \
+ && sudo apt purge -yq gnupg \
  && sudo apt install -yq --fix-missing \
-      build-essential cmake git s3cmd libpcre3-dev libnss3 libxcomposite1 libxtst6 jq gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-tools gstreamer1.0-alsa gstreamer1.0-pulseaudio
+      build-essential cmake jq git s3cmd gnupg2 \
+      libpcre3-dev libnss3 libxcomposite1 libxtst6 \
+      gstreamer1.0-plugins-good gstreamer1.0-plugins-bad \
+      gstreamer1.0-plugins-ugly gstreamer1.0-libav \
+      gstreamer1.0-tools gstreamer1.0-alsa gstreamer1.0-pulseaudio
 
 # Installing Golang
 RUN GOLANG_SHA256="aed845e4185a0b2a3c3d5e1d0a35491702c55889192bb9c30e67a3de6849c067" \
@@ -40,5 +45,5 @@ USER jenkins
 ENV HOME="/home/jenkins"
 
 LABEL maintainer="jakub@status.im"
-LABEL source="https://github.com/status-im/nim-status-client"
+LABEL source="https://github.com/status-im/status-desktop"
 LABEL description="Build image for the Status Desktop client written in Nim."

ci/Jenkinsfile.combined

@@ -1,4 +1,4 @@
-library 'status-jenkins-lib@v1.2.20'
+library 'status-jenkins-lib@ci-linux-signing'
 
 pipeline {
   agent { label 'linux' }

ci/Jenkinsfile.linux

@@ -1,10 +1,10 @@
-library 'status-jenkins-lib@v1.2.20'
+library 'status-jenkins-lib@ci-linux-signing'
 
 pipeline {
   agent {
     docker { 
       label 'linux'
-      image 'statusteam/nim-status-client-build:1.0.2'
+      image 'statusteam/nim-status-client-build:1.0.3'
       /* allows jenkins use cat and mounts '/dev/fuse' for linuxdeployqt */
       args '--entrypoint="" --cap-add SYS_ADMIN --security-opt apparmor:unconfined --device /dev/fuse'
     }
@@ -64,14 +64,9 @@ pipeline {
     }
 
     stage('Package') {
-      steps {
+      steps { script {
-        withCredentials([string(
+        linux.bundle('tgz-linux')
-          credentialsId: utils.getInfuraTokenCred(),
+      } }
-          variable: 'INFURA_TOKEN'
-        )]) {
-          sh 'make tgz-linux'
-        }
-      }
     }
 
     stage('Parallel Upload') {
@@ -84,7 +79,7 @@ pipeline {
         }
         stage('Archive') {
           steps { script {
-            archiveArtifacts(env.STATUS_CLIENT_TARBALL)
+            archiveArtifacts("${env.STATUS_CLIENT_TARBALL}*")
           } }
         }
       }

ci/Jenkinsfile.macos

@@ -1,4 +1,4 @@
-library 'status-jenkins-lib@v1.2.20'
+library 'status-jenkins-lib@ci-linux-signing'
 
 pipeline {
   agent {

ci/Jenkinsfile.windows

@@ -1,4 +1,4 @@
-library 'status-jenkins-lib@v1.2.20'
+library 'status-jenkins-lib@ci-linux-signing'
 
 pipeline {
   agent { label 'windows' }

scripts/sign-linux-file.sh

@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+set -eof pipefail
+
+# Checks -----------------------------------------------------------------------
+
+if [[ $(uname) != 'Linux' ]]; then
+    echo 'This only works on Linux.' >&2
+    exit 1
+fi
+if [[ $# -lt 1 ]]; then
+    echo 'sign-linux-tarball.sh <file_to_sign>' >&2
+    exit 1
+fi
+if [[ -z "${LINUX_GPG_PRIVATE_KEY_FILE}" ]]; then
+    echo "Unable to import GPG key file if LINUX_GPG_PRIVATE_KEY_FILE is not set!" >&2
+    exit 1
+fi
+if [[ -z "${LINUX_GPG_PRIVATE_KEY_PASS}" ]]; then
+    echo "Unable to import GPG key file if LINUX_GPG_PRIVATE_KEY_PASS is not set!" >&2
+    exit 1
+fi
+if [[ ! -f "${LINUX_GPG_PRIVATE_KEY_FILE}" ]]; then
+    echo "No such file exists: ${LINUX_GPG_PRIVATE_KEY_FILE}" >&2
+    exit 1
+fi
+
+# Signing ----------------------------------------------------------------------
+
+function clean_up {
+    STATUS=$?
+    if [[ "${STATUS}" -ne 0 ]]; then
+        echo -e "\n###### ERROR: See above for details."
+    fi
+    set +e
+
+    echo -e "\n### Removing Temporary Keyring..."
+    rm -frv "${GNUPGHOME}"
+    exit $STATUS
+}
+
+# First and only argument is the file to create signature for
+TARGET="${1}"
+
+# Use a temporary GPG home and for the keyring.
+export GNUPGHOME=$(mktemp -d $HOME/.gnupg.tmp.XXXXXX)
+# Remove the GPG home along with the keyring regardless of how script exits.
+trap clean_up EXIT
+
+# Fix for 'gpg: signing failed: Inappropriate ioctl for device' in Docker
+echo 'allow-loopback-pinentry' > "${GNUPGHOME}/gpg-agent.conf"
+echo 'pinentry-mode loopback' > "${GNUPGHOME}/gpg.conf"
+
+# Import the GPG key file into the temporary keyring.
+echo -e "\n### Importing GPG private key..."
+gpg2 --batch --yes --passphrase-fd 0 \
+    --import "${LINUX_GPG_PRIVATE_KEY_FILE}" \
+    <<< "${LINUX_GPG_PRIVATE_KEY_PASS}"
+
+# Trust all immported keys ultimately.
+gpg2 --list-secret-keys --with-colons \
+    | awk -F: '/fpr/{printf "%s:6:\n", $10}' \
+    | gpg2 --import-ownertrust --batch
+
+echo -e "\n### Signing target..."
+gpg2 --batch --yes --passphrase-fd 0 --verbose \
+    --armor --detach-sign "${TARGET}" \
+    <<< "${LINUX_GPG_PRIVATE_KEY_PASS}"
+
+echo -e "\n### Verifying signature..."
+gpg2 --batch --verify "${TARGET}.asc" "${TARGET}"
+
+echo -e "\n### DONE"

scripts/sign-macos-pkg.sh

@@ -17,7 +17,9 @@ CODESIGN_OPTS_EXTRA=("${@}")
 
 function clean_up {
     STATUS=$?
-    [[ $? -eq 0 ]] || echo -e "\n###### ERROR: See above for details."
+    if [[ "${STATUS}" -eq 0 ]]; then
+        echo -e "\n###### ERROR: See above for details."
+    fi
     set +e
 
     echo -e "\n###### Cleaning up..."