Add CodeQL Workflow for Code Security Analysis

Add CodeQL Workflow for Code Security Analysis

This pull request introduces a CodeQL workflow to enhance the security analysis of our repository. CodeQL is a powerful static analysis tool that helps identify and mitigate security vulnerabilities in our codebase. By integrating this workflow into our GitHub Actions, we can proactively identify and address potential issues before they become security threats.

We added a new CodeQL workflow file (.github/workflows/codeql.yml) that
- Runs on every push and pull request to the main branch.
- Excludes queries with a high false positive rate or low-severity findings.
- Does not display results for third-party code, focusing only on our own codebase.

Testing:
To validate the functionality of this workflow, we have run several test scans on the codebase and reviewed the results. The workflow successfully compiles the project, identifies issues, and provides actionable insights while reducing noise by excluding certain queries and third-party code.

Deployment:
Once this pull request is merged, the CodeQL workflow will be active and automatically run on every push and pull request to the main branch. To view the results of these code scans, please follow these steps:
1. Under the repository name, click on the Security tab.
2. In the left sidebar, click Code scanning alerts.

Additional Information:
- You can further customize the workflow to adapt to your specific needs by modifying the workflow file.
- For more information on CodeQL and how to interpret its results, refer to the GitHub documentation and the CodeQL documentation.

Signed-off-by: Brian <bayuan@purdue.edu>

2 files changed, 129 insertions, 0 deletions

diff --git a/.github/workflows/codeql-buildscript.sh b/.github/workflows/codeql-buildscript.sh
new file mode 100644
index 0000000..0804d64
--- /dev/null
+++ b/.github/workflows/codeql-buildscript.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+sudo apt-get -y update
+sudo apt-get -y install python3-protobuf protobuf-compiler #scons splint valgrind
+cd examples/simple
+make
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..eaa9599
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,123 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main", "master" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main", "master" ]
+  schedule:
+    - cron: '28 21 * * 0'
+
+jobs:
+  analyze:
+    name: Analyze
+    # Runner size impacts CodeQL analysis time. To learn more, please see:
+    #   - https://gh.io/recommended-hardware-resources-for-running-codeql
+    #   - https://gh.io/supported-runners-and-hardware-resources
+    #   - https://gh.io/using-larger-runners
+    # Consider using larger runners for possible analysis time improvements.
+    runs-on: ${{ (matrix.language == 'swift' && 'macos-latest') || 'ubuntu-20.04' }}
+    timeout-minutes: ${{ (matrix.language == 'swift' && 120) || 360 }}
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby', 'swift' ]
+        # Use only 'java' to analyze code written in Java, Kotlin or both
+        # Use only 'javascript' to analyze code written in JavaScript, TypeScript or both
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+
+        # For more details on CodeQL's query packs, refer to: https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        # queries: security-extended,security-and-quality
+        queries: security-and-quality
+
+
+    # Autobuild attempts to build any compiled languages (C/C++, C#, Go, Java, or Swift).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    #- name: Autobuild
+    #  uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+    #   If the Autobuild fails above, remove it and uncomment the following three lines.
+    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+    - run: |
+        ./.github/workflows/codeql-buildscript.sh
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2
+      with:
+        category: "/language:${{matrix.language}}"
+        upload: false
+      id: step1
+
+    # Filter out rules with low severity or high false positve rate
+    # Also filter out warnings in third-party code
+    - name: Filter out unwanted errors and warnings
+      uses: advanced-security/filter-sarif@v1
+      with:
+        patterns: |
+          -**:cpp/path-injection
+          -**:cpp/world-writable-file-creation
+          -**:cpp/poorly-documented-function
+          -**:cpp/potentially-dangerous-function
+          -**:cpp/use-of-goto
+          -**:cpp/integer-multiplication-cast-to-long
+          -**:cpp/comparison-with-wider-type
+          -**:cpp/leap-year/*
+          -**:cpp/ambiguously-signed-bit-field
+          -**:cpp/suspicious-pointer-scaling
+          -**:cpp/suspicious-pointer-scaling-void
+          -**:cpp/unsigned-comparison-zero
+          -**/third*party/**
+          -**/3rd*party/**
+          -**/external/**
+        input: ${{ steps.step1.outputs.sarif-output }}/cpp.sarif
+        output: ${{ steps.step1.outputs.sarif-output }}/cpp.sarif
+
+    - name: Upload SARIF
+      uses: github/codeql-action/upload-sarif@v2
+      with:
+        sarif_file: ${{ steps.step1.outputs.sarif-output }}
+        category: "/language:${{matrix.language}}"
+
+    - name: Archive CodeQL results
+      uses: actions/upload-artifact@v3
+      with:
+        name: codeql-results
+        path: ${{ steps.step1.outputs.sarif-output }}
+        retention-days: 5
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