Introduce static code analysis (#50)

* Introduce static code analysis

* Replace named returns where possible

* Allow storage.googleapis.com for nilcheck

---------

Co-authored-by: Richard Kovacs <[email protected]>

Author: mhmxs

.github/workflows/build_test_ci.yml

@@ -6,11 +6,31 @@ on:
   pull_request:
     branches: [ "main" ]
 
-jobs:
+permissions:
+  contents: read
+  pull-requests: read
+  actions: read
+
+concurrency:
+  group: build-test-ci-${{ github.ref }}-1
+  cancel-in-progress: true
 
+jobs:
   go-build-test:
     runs-on: ubuntu-latest
     steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@v2
+      with:
+        disable-sudo: true
+        egress-policy: block
+        allowed-endpoints: >
+          api.github.com:443
+          github.com:443
+          proxy.golang.org:443
+          sum.golang.org:443
+          objects.githubusercontent.com:443
+
     - uses: actions/checkout@v4
 
     - name: Set up Go
@@ -24,9 +44,77 @@ jobs:
     - name: Test
       run: make test
 
+  go-analyse:
+    needs:  go-build-test
+    runs-on: ubuntu-latest
+    steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@v2
+      with:
+        disable-sudo: true
+        egress-policy: block
+        allowed-endpoints: >
+          api.github.com:443
+          github.com:443
+          proxy.golang.org:443
+          sum.golang.org:443
+          objects.githubusercontent.com:443
+          registry-1.docker.io:443
+          auth.docker.io:443
+          production.cloudflare.docker.com:443
+          vuln.go.dev:443
+          storage.googleapis.com:443
+
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 'stable'
+
+    - name: Docker cache
+      uses: ScribeMD/[email protected]
+      with:
+        key: docker-${{ runner.os }}-${{ hashFiles('Makefile') }}}
+
+    - name: Lint
+      run: make lint
+
+    - name: Gosec
+      run: make gosec
+
+    - name: Vulncheck
+      run: make vulncheck
+    
+    - name: Nilcheck
+      run: make nilcheck
+
   docker-build:
     runs-on: ubuntu-latest
     steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@v2
+      with:
+        disable-sudo: true
+        egress-policy: block
+        allowed-endpoints: >
+          api.github.com:443
+          github.com:443
+          proxy.golang.org:443
+          sum.golang.org:443
+          objects.githubusercontent.com:443
+          registry-1.docker.io:443
+          auth.docker.io:443
+          production.cloudflare.docker.com:443
+          gcr.io:443
+          storage.googleapis.com:443
+
     - uses: actions/checkout@v4
+
+    - name: Docker cache
+      uses: ScribeMD/[email protected]
+      with:
+        key: docker-${{ runner.os }}-${{ hashFiles('Dockerfile') }}
+
     - name: Build the Docker image
       run: make docker-build

.github/workflows/codeql.yml

@@ -0,0 +1,69 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+concurrency:
+    group: codeql-${{ github.ref }}-1
+    cancel-in-progress: true
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@v2
+      with:
+        disable-sudo: true
+        egress-policy: block
+        allowed-endpoints: >
+          api.github.com:443
+          github.com:443
+          proxy.golang.org:443
+          sum.golang.org:443
+          objects.githubusercontent.com:443
+
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 'stable'
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+        languages: go
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+
+        # Details on CodeQL's query packs refer to: https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        # queries: security-extended,security-and-quality
+
+    - name: Build
+      run: make build
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2
+      with:
+        category: "/language:go"