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BUSINESS POSTURE

  • Business Priorities and Goals:
    • Increase developer productivity by automating repetitive code generation tasks in Swift projects.
    • Improve code consistency and reduce boilerplate code, leading to better maintainability.
    • Enable developers to focus on higher-level logic and business problems instead of manual code generation.
  • Business Risks:
    • Risk of introducing bugs through generated code if Sourcery's parsing or template logic is flawed.
    • Potential for increased complexity if code generation is overused or templates are poorly designed, making debugging and understanding harder.
    • Dependency on Sourcery for code generation might create a single point of failure in development workflows if the tool becomes unavailable or has issues.
    • Risk of developers misusing Sourcery, leading to inconsistent coding styles or unintended code changes if not properly configured and used.

SECURITY POSTURE

  • Existing Security Controls:
    • security control: Open Source Code - The project is open source, allowing for community review and scrutiny of the codebase. Implemented in: GitHub repository.
    • security control: GitHub Security Features - Reliance on GitHub's platform security features for repository hosting, access control, and vulnerability scanning. Implemented in: GitHub platform.
    • security control: Input Validation - Presumably, Sourcery includes input validation to parse Swift code and templates, although specific details are not provided in the repository description. Implemented in: Sourcery codebase (implementation details unknown).
  • Accepted Risks:
    • accepted risk: Dependency Vulnerabilities - Potential vulnerabilities in third-party libraries and dependencies used by Sourcery.
    • accepted risk: Template Security - Risk of using untrusted or malicious templates if developers source them from unverified locations (though this is less likely in typical usage as templates are usually project-specific).
  • Recommended Security Controls:
    • security control: Dependency Scanning - Implement automated dependency scanning to identify and address vulnerabilities in Sourcery's dependencies.
    • security control: Static Application Security Testing (SAST) - Integrate SAST tools into the development pipeline to automatically analyze Sourcery's codebase for potential security flaws.
    • security control: Input Validation Hardening - Thoroughly review and harden input validation logic for Swift code and template parsing to prevent injection attacks and unexpected behavior.
    • security control: Secure Template Development Guidelines - Provide guidelines and best practices for developers on how to create secure templates, minimizing the risk of introducing vulnerabilities through generated code.
  • Security Requirements:
    • Authentication: Not directly applicable as Sourcery is a command-line tool used locally by developers.
    • Authorization: Not directly applicable as Sourcery operates on files accessible to the user running it. Access control is managed by the operating system's file system permissions.
    • Input Validation: Critical for parsing Swift code and templates. Sourcery must robustly validate inputs to prevent issues like code injection or denial-of-service attacks through maliciously crafted Swift code or templates.
    • Cryptography: Not directly applicable to the core functionality of Sourcery as a code generation tool. Cryptographic requirements might be relevant if Sourcery were to handle sensitive data or secrets, which is not indicated in its current description.

DESIGN

C4 CONTEXT

flowchart LR
    subgraph "Software Development Environment"
        A["Developer"]
    end
    B("Sourcery CLI")
    C["Swift Project Codebase"]
    D["IDE (Xcode, etc.)"]
    E["Version Control System (Git)"]

    A --> B
    B --> C
    B --> D
    B --> E
    C --> E

    style B fill:#f9f,stroke:#333,stroke-width:2px
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  • Context Diagram Elements:
      • Name: Developer
      • Type: Person
      • Description: A software developer using Sourcery to automate code generation in Swift projects.
      • Responsibilities: Uses Sourcery to generate code, configures Sourcery templates, integrates generated code into Swift projects.
      • Security controls: Relies on personal workstation security practices.
      • Name: Sourcery CLI
      • Type: Software System
      • Description: The Sourcery command-line interface tool, responsible for parsing Swift code, applying templates, and generating new Swift code.
      • Responsibilities: Code parsing, template processing, code generation, configuration management.
      • Security controls: Input validation, secure handling of templates, logging.
      • Name: Swift Project Codebase
      • Type: Software System
      • Description: The Swift project codebase that Sourcery operates on, containing Swift source files and project configurations.
      • Responsibilities: Stores the Swift code to be processed and augmented by Sourcery.
      • Security controls: Access control via file system permissions and version control system.
      • Name: IDE (Xcode, etc.)
      • Type: Software System
      • Description: Integrated Development Environment used by developers to write, edit, and build Swift code, including code generated by Sourcery.
      • Responsibilities: Code editing, compilation, debugging, integration with development tools.
      • Security controls: IDE security features, plugin security management.
      • Name: Version Control System (Git)
      • Type: Software System
      • Description: A version control system (likely Git) used to manage the Swift project codebase, including both original and generated code.
      • Responsibilities: Version control, code history tracking, collaboration, backup and recovery.
      • Security controls: Authentication, authorization, access control, audit logging.

C4 CONTAINER

flowchart LR
    subgraph "Sourcery CLI Container"
        A["CLI Interface"]
        B["Swift Parser"]
        C["Template Engine"]
        D["Code Generator"]
        E["Configuration Manager"]
    end
    F["Swift Project Codebase"]

    A --> B
    A --> C
    A --> E
    B --> C
    C --> D
    D --> F
    E --> F

    style A fill:#f9f,stroke:#333,stroke-width:2px
    style B fill:#f9f,stroke:#333,stroke-width:2px
    style C fill:#f9f,stroke:#333,stroke-width:2px
    style D fill:#f9f,stroke:#333,stroke-width:2px
    style E fill:#f9f,stroke:#333,stroke-width:2px
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  • Container Diagram Elements:
      • Name: CLI Interface
      • Type: Container - Application
      • Description: Command-line interface that accepts user commands and parameters to invoke Sourcery functionalities.
      • Responsibilities: Command parsing, argument validation, interaction with other Sourcery components, output display.
      • Security controls: Input validation of command-line arguments, logging of commands executed.
      • Name: Swift Parser
      • Type: Container - Library
      • Description: Component responsible for parsing Swift source code into an Abstract Syntax Tree (AST) or similar intermediate representation.
      • Responsibilities: Lexical analysis, syntax analysis, error reporting during parsing.
      • Security controls: Robust input validation to handle potentially malicious or malformed Swift code, prevention of parser vulnerabilities.
      • Name: Template Engine
      • Type: Container - Library
      • Description: Component that processes templates written in a template language (e.g., Stencil, Swig) and combines them with parsed Swift code information to generate new code.
      • Responsibilities: Template parsing, template execution, data binding between parsed code and templates.
      • Security controls: Secure template parsing to prevent template injection attacks, control over template execution environment.
      • Name: Code Generator
      • Type: Container - Library
      • Description: Component that takes the output from the template engine and generates Swift code in text format.
      • Responsibilities: Code formatting, code generation based on template output.
      • Security controls: Output encoding to prevent code injection vulnerabilities in generated code.
      • Name: Configuration Manager
      • Type: Container - Library
      • Description: Component that handles Sourcery's configuration, including template paths, output directories, and other settings.
      • Responsibilities: Configuration loading, configuration validation, configuration storage.
      • Security controls: Secure storage of configuration data if sensitive, validation of configuration parameters to prevent misuse.

DEPLOYMENT

  • Deployment Architecture Options:

    • Local CLI Deployment (Typical): Sourcery is typically deployed as a command-line tool installed directly on a developer's workstation. This is the most common and straightforward deployment model.
    • CI/CD Integration: Sourcery can be integrated into CI/CD pipelines to automatically generate code as part of the build process. This would involve installing Sourcery on build agents.
    • Server-Based Code Generation (Less Likely): In less common scenarios, Sourcery could potentially be deployed on a server to provide code generation as a service, although this is not the typical use case for Sourcery.

  • Detailed Deployment Architecture (Local CLI Deployment):

flowchart LR
    A["Developer Workstation"]
    subgraph "Developer Workstation"
        B["Operating System (macOS, Linux, Windows)"]
        C["Sourcery CLI Executable"]
        D["Swift Project Files"]
    end

    A --> B
    B --> C
    B --> D

    style C fill:#f9f,stroke:#333,stroke-width:2px
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  • Deployment Diagram Elements:
      • Name: Developer Workstation
      • Type: Deployment Environment - Physical
      • Description: The physical or virtual machine used by a software developer for coding and development tasks.
      • Responsibilities: Provides the environment for running Sourcery and developing Swift code.
      • Security controls: Workstation security policies, operating system security controls, endpoint protection software.
      • Name: Operating System (macOS, Linux, Windows)
      • Type: Infrastructure - Software
      • Description: The operating system running on the developer's workstation, providing core system functionalities.
      • Responsibilities: Resource management, process isolation, user authentication, file system access control.
      • Security controls: OS security updates, user access control, firewall, security configurations.
      • Name: Sourcery CLI Executable
      • Type: Deployment Unit - Executable
      • Description: The compiled and packaged Sourcery command-line executable, deployed on the developer's workstation.
      • Responsibilities: Code generation when executed by the developer.
      • Security controls: Software integrity verification (e.g., code signing), access control via file system permissions.
      • Name: Swift Project Files
      • Type: Data - Files
      • Description: Swift project source code files, templates, and configuration files residing on the developer's workstation.
      • Responsibilities: Input data for Sourcery, storage for generated code.
      • Security controls: File system permissions, data encryption at rest (if required by workstation security policy).

BUILD

flowchart LR
    A["Developer"] --> B("Code Commit (GitHub)")
    B --> C{"GitHub Actions Workflow"}
    C --> D["Build Environment"]
    D --> E["Swift Compiler"]
    D --> F["Dependency Manager (Swift Package Manager)"]
    D --> G["SAST Scanner (Optional)"]
    D --> H["Build Artifacts (Executable)"]
    H --> I["Distribution (GitHub Releases, etc.)"]

    style H fill:#f9f,stroke:#333,stroke-width:2px
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  • Build Process Description:

    • Developer commits code changes to the GitHub repository.
    • GitHub Actions workflow is triggered upon code commit.
    • Build environment is provisioned (likely a GitHub Actions runner).
    • Swift compiler compiles the Sourcery codebase.
    • Dependency manager (Swift Package Manager) resolves and downloads dependencies.
    • Optional SAST scanner performs static analysis on the codebase for security vulnerabilities.
    • Build artifacts (Sourcery CLI executable) are created.
    • Build artifacts are published for distribution (e.g., GitHub Releases, Homebrew).

  • Build Diagram Elements:

      • Name: Developer
      • Type: Person
      • Description: A developer contributing code to the Sourcery project.
      • Responsibilities: Writing code, committing code changes, initiating the build process through code commits.
      • Security controls: Developer workstation security, code review process.
      • Name: Code Commit (GitHub)
      • Type: Process - Manual/Automated
      • Description: The action of committing code changes to the GitHub repository, triggering the CI/CD pipeline.
      • Responsibilities: Version control, change tracking, triggering automated build process.
      • Security controls: Authentication, authorization, commit signing.
      • Name: GitHub Actions Workflow
      • Type: Automation - CI/CD
      • Description: Automated workflow defined in GitHub Actions to build, test, and publish Sourcery.
      • Responsibilities: Orchestrating the build process, running build steps, managing build environment.
      • Security controls: Workflow definition security, secrets management, access control to workflow configurations.
      • Name: Build Environment
      • Type: Infrastructure - Virtualized
      • Description: The environment where the build process is executed, typically a virtual machine or container provided by GitHub Actions.
      • Responsibilities: Providing resources for compilation, dependency management, and testing.
      • Security controls: Secure build environment configuration, isolation from other environments.
      • Name: Swift Compiler
      • Type: Tool - Development
      • Description: The Swift compiler used to compile the Sourcery Swift codebase into an executable.
      • Responsibilities: Code compilation, static analysis during compilation.
      • Security controls: Compiler security features, compiler version management.
      • Name: Dependency Manager (Swift Package Manager)
      • Type: Tool - Development
      • Description: Swift Package Manager used to manage and download dependencies required by Sourcery.
      • Responsibilities: Dependency resolution, dependency download, dependency version management.
      • Security controls: Dependency integrity verification (e.g., checksums), vulnerability scanning of dependencies.
      • Name: SAST Scanner (Optional)
      • Type: Tool - Security
      • Description: Static Application Security Testing tool used to analyze the Sourcery codebase for potential security vulnerabilities (optional but recommended).
      • Responsibilities: Static code analysis, vulnerability detection, security reporting.
      • Security controls: SAST tool configuration, vulnerability reporting and remediation process.
      • Name: Build Artifacts (Executable)
      • Type: Artifact - Executable
      • Description: The compiled Sourcery CLI executable and other distribution files produced by the build process.
      • Responsibilities: Packaged software ready for distribution and deployment.
      • Security controls: Code signing, artifact integrity verification (e.g., checksums), secure storage of artifacts.
      • Name: Distribution (GitHub Releases, etc.)
      • Type: Process - Distribution
      • Description: The process of making Sourcery build artifacts available to users for download and installation.
      • Responsibilities: Software distribution, release management, versioning.
      • Security controls: Secure distribution channels (HTTPS), release signing, integrity verification for downloads.

RISK ASSESSMENT

  • Critical Business Processes:
    • Swift software development process for organizations using Sourcery to enhance productivity.
    • Distribution of Sourcery software to developers.
  • Data to Protect:
    • Sourcery source code (intellectual property).
    • Swift project codebases processed by Sourcery (potentially sensitive customer code).
    • Sourcery templates (potentially containing sensitive logic or configurations).
  • Data Sensitivity:
    • Sourcery source code: High sensitivity (intellectual property, competitive advantage).
    • Swift project codebases: Sensitivity varies depending on the project, can be highly sensitive (confidential business logic, personal data).
    • Sourcery templates: Medium sensitivity (can contain business logic or configuration details).

QUESTIONS & ASSUMPTIONS

  • Questions:
    • Are there any specific security compliance requirements for Sourcery (e.g., SOC 2, ISO 27001)?
    • Are there any plans to integrate Sourcery with cloud-based services or platforms in the future?
    • What is the process for handling security vulnerabilities reported in Sourcery?
    • Are there any specific types of Swift projects or code patterns that Sourcery is designed to handle or explicitly avoid?
  • Assumptions:
    • Sourcery is primarily used as a local command-line tool by individual developers.
    • Templates are typically created and managed by the developers using Sourcery and are project-specific.
    • The build process for Sourcery relies on GitHub Actions for CI/CD.
    • Distribution of Sourcery is primarily through GitHub Releases and potentially package managers like Homebrew.
    • Security is a consideration for the Sourcery project, but specific security measures might not be fully implemented yet.