Add POSIX compatibility

Author: jkroepke

.github/workflows/ci.yaml.example

@@ -0,0 +1,40 @@
+
+---
+name: CI
+
+env:
+  MAVEN_CLI_OPTS: '-Dspring.main.banner-mode=off --batch-mode --errors --fail-at-end --show-version -DinstallAtEnd=true -DdeployAtEnd=true'
+  MAVEN_OPTS: '-Dhttps.protocols=TLSv1.2 -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=WARN -Dorg.slf4j.simpleLogger.showDateTime=true -Djava.awt.headless=true'
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - name: Lint check
+        uses: azohra/[email protected]
+        with:
+          path: "*.sh"
+
+  shfmt:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - name: Download shfmt
+        run: curl -sSL $SHFMT_URL -o ~/shfmt && chmod +x ~/shfmt
+        env:
+          SHFMT_URL: https://github.com/mvdan/sh/releases/download/v0.4.0/shfmt_v0.4.0_linux_amd64
+      - name: Run shfmt
+        run: ~/shfmt -l -w -i 2 .
+      - name: Test if syntax is correct
+        run: git diff --exit-code && echo "shfmt OK"

install-binary.sh

@@ -1,85 +1,66 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
-set -ueo pipefail
+set -eu
 
-SOPS_VERSION="3.0.4"
-SOPS_DEB_URL="https://github.com/mozilla/sops/releases/download/${SOPS_VERSION}/sops_${SOPS_VERSION}_amd64.deb"
-SOPS_DEB_SHA="9d9f319882ba05e7050be91bdfc396167ac9b00e2e6f634a647d55ac97915bb6"
+SOPS_VERSION="3.5.0"
 SOPS_LINUX_URL="https://github.com/mozilla/sops/releases/download/${SOPS_VERSION}/sops-${SOPS_VERSION}.linux"
-SOPS_LINUX_SHA="e185d2752defdcb18c054f67682a6684c72d6a6bf2341f6bef1dd7d33a110459"
+SOPS_LINUX_SHA="610fca9687d1326ef2e1a66699a740f5dbd5ac8130190275959da737ec52f096"
 
 RED='\033[0;31m'
-GREEN='\033[0;32m'
+#GREEN='\033[0;32m'
 #BLUE='\033[0;34m'
-YELLOW='\033[1;33m'
+#YELLOW='\033[1;33m'
 NOC='\033[0m'
 
-# Find some tools
-case "${HELM_BIN}" in
-    helm)
-        HELM_DIR="$(dirname $(command -v helm))"
-        ;;
-    *)
-        HELM_DIR="$(dirname ${HELM_BIN})"
-        ;;
-esac
-
-get_sha_256 () {
-    if command -v sha256sum > /dev/null; then res=$(sha256sum $1)
-    elif command -v shasum > /dev/null; then res=$(shasum -a 256 $1)
-    else res=$(/usr/bin/shasum -a 256 $1)
-    fi
-    echo $res | cut -d ' ' -f 1
+download() {
+  if command -v curl >/dev/null; then
+    curl -sSfL "$1"
+  elif command -v wget >/dev/null; then
+    wget -q -O- "$1"
+  else
+    return 1
+  fi
 }
 
-# Install the helm wrapper in the same dir as helm itself. That's not
-# guaranteed to work, but it's better than hard-coding it.
-HELM_WRAPPER="${HELM_DIR}/helm-wrapper"
+get_sha_256() {
+  if command -v sha256sum >/dev/null; then
+    res=$(sha256sum "$1")
+  elif command -v shasum >/dev/null; then
+    res=$(shasum -a 256 "$1")
+  else
+    res=''
+  fi
+
+  echo "$res" | cut -d ' ' -f 1
+}
 
 if hash sops 2>/dev/null; then
-    echo "sops is already installed:"
-    sops --version
+  echo "sops is already installed: "
+  sops --version
 else
-
-    # Try to install sops.
-
-    ### Mozilla SOPS binary install
-    if [ "$(uname)" == "Darwin" ];
-    then
-            brew install sops
-    elif [ "$(uname)" == "Linux" ];
-    then
-        if which dpkg;
-        then
-            curl -sL "${SOPS_DEB_URL}" > /tmp/sops
-            if [ "$(get_sha_256 /tmp/sops)" == "${SOPS_DEB_SHA}" ];
-            then
-                sudo dpkg -i /tmp/sops;
-            else
-                echo -e "${RED}Wrong SHA256${NOC}"
-            fi
-        else
-            curl -sL "${SOPS_LINUX_URL}" > /tmp/sops
-            if [ "$(get_sha_256 /tmp/sops)" == "${SOPS_LINUX_SHA}" ];
-            then
-                chmod +x /tmp/sops
-                mv /tmp/sops /usr/local/bin/
-            else
-                echo -e "${RED}Wrong SHA256${NOC}"
-            fi
-        fi
-        rm /tmp/sops 2>/dev/null || true
+  # Try to install sops.
+  if [ "$(uname)" = "Darwin" ]; then
+    brew install sops
+  elif [ "$(uname)" = "Linux" ]; then
+    if ! download "${SOPS_LINUX_URL}" >/tmp/sops; then
+      printf "${RED}%s${NOC}\n" "Can't download SOPS ..."
     else
-        echo -e "${RED}No SOPS package available${NOC}"
-        exit 1
+      SOPS_SHA256="$(get_sha_256 /tmp/sops)"
+      if [ "${SOPS_SHA256}" = "${SOPS_LINUX_SHA}" ] || [ "${SOPS_SHA256}" = "" ]; then
+        chmod +x /tmp/sops
+        mv /tmp/sops /usr/local/bin/
+      else
+        printf "${RED}%s${NOC}\n" "Wrong SHA256"
+      fi
+      rm -f /tmp/sops
     fi
+  else
+    printf "${RED}%s${NOC}\n" "No SOPS package available"
+    exit 1
+  fi
 fi
 
-### git diff config
-if [ -x "$(command -v git --version)" ];
-then
-    git config --global diff.sopsdiffer.textconv "sops -d"
-else
-    echo -e "${RED}[FAIL]${NOC} Install git command"
-    exit 1
+# If git is no available, fail silent.
+if hash git 2>/dev/null; then
+  git config --global diff.sopsdiffer.textconv "sops -d"
 fi