Milestone [2] Fragment System and File Source by mcode-app[bot] · Pull Request #3 · anchan77/gitleaks

mcode-app · 2026-01-03T09:06:42Z

Status

Milestone partially completed: 2 of 4 tasks successfully completed

✅ Task 1 (Completed): Fragment Data Structure and Source Trait
✅ Task 2 (Completed): Basic File Source with Chunked Reading
❌ Task 3 (Failed): Archive Detection and Recursive Extraction - Not attempted
⏸️ Task 4 (Ready): stdin Command Implementation - Blocked due to Task 3 dependency

Task 3 was not attempted, which blocked Task 4 from execution. The milestone delivers the foundational fragment abstraction and basic file reading capabilities, but lacks archive extraction support and the stdin CLI command.

Feature overview

This milestone establishes the fragment system and file-based source architecture, providing the foundation for content scanning in the Rust-based gitleaks implementation.

The fragment abstraction provides a unified representation of scannable content with associated metadata (file path, line numbers, commit information). The Source trait defines a common iterator-based interface for yielding fragments from various origins. The File source implementation enables reading content from files or readers with memory-efficient chunked reading, binary file detection, and safe boundary handling to prevent splitting secrets across chunks.

While archive extraction and the stdin CLI command were not completed, the implemented components provide the essential building blocks for the detection engine (Milestone 3) and future source implementations.

Testing

Automated testing

The milestone includes comprehensive test coverage:

Fragment and Source trait tests (7 tests in tests/sources_test.rs):

Fragment creation with various configurations
Fragment with commit info and custom start lines
Source trait implementation patterns
Error handling in source implementations
Platform enum behavior and display formatting

File source tests (34 tests in src/sources/file.rs):

Safe boundary detection with LF and CRLF line endings
Finding safe boundaries when initial split is unsafe
Handling blank lines with whitespace
Small text file reading
Multiple chunk handling for large files (>100KB)
Line number tracking across chunks
Symlink metadata handling
Binary file detection (application/* MIME types)
Image file handling (not skipped)
Empty file handling

All 86 tests across the codebase pass successfully.

Manual testing

Manual verification can be performed by:

Creating test files of various sizes and running the file source implementation
Testing with binary files to verify MIME type detection skips them appropriately
Creating large files (>100KB) to verify chunked reading produces multiple fragments with correct line numbers
Testing symlink handling by creating symlinks to test files

Note: End-to-end testing with the stdin command is not possible as Task 4 was not completed.

Architecture

Overview

graph TB
    subgraph "Configuration Layer (Milestone 1)"
        CONFIG[Config Parser<br/>serde + toml]
        RULES[Rule Engine]
        ALLOWLIST[Allowlist Matcher]
    end
    
    subgraph "Source Layer (Milestone 2 - NEW)"
        TRAIT[Source Trait<br/>Iterator-based]
        FILE[File Source<br/>Chunked Reading]
        FRAGMENT[Fragment Structure]
    end
    
    subgraph "Detection Engine (Future)"
        DETECTOR[Core Detector<br/>Not yet implemented]
    end
    
    FILE -->|yields| FRAGMENT
    TRAIT -.implemented by.-> FILE
    FRAGMENT -->|consumed by| DETECTOR
    CONFIG -->|used by| DETECTOR
    
    style TRAIT fill:#7ed321
    style FILE fill:#7ed321
    style FRAGMENT fill:#7ed321
    style DETECTOR fill:#cccccc
    
    classDef newNode fill:#7ed321
    classDef modifiedNode fill:#fff9b1
    classDef futureNode fill:#cccccc
    
    class TRAIT,FILE,FRAGMENT newNode
    class DETECTOR futureNode

Legend:

🟢 Green: New modules added in this milestone
⚪ Gray: Future modules (not yet implemented)

Changes

Fragment System (`src/sources/fragment.rs`, `src/sources/git_info.rs`, `src/sources/platform.rs`)

The fragment system provides a unified representation of scannable content units:

Fragment struct: Contains raw string content, file path (normalized with / separators), optional symlink path, start line number (1-indexed), optional commit metadata, and an inherited-from-finding flag for baseline tracking
CommitInfo struct: Captures git commit metadata including author name, author email, date, commit message, SHA, and remote repository information
Platform enum: Defines supported SCM platforms (GitHub, GitLab, Azure DevOps, Gitea, Bitbucket) with display formatting
RemoteInfo struct: Stores remote repository metadata including platform, host, owner, and repository name

The Fragment abstraction enables the detector to process content uniformly regardless of its source while preserving necessary metadata for accurate finding reports.

Source Trait (`src/sources/source.rs`)

The Source trait establishes the contract for all source implementations:

Iterator-based API: Uses Box<dyn Iterator<Item = Result<Fragment, SourceError>>> pattern rather than callback-based approach for better Rust ergonomics and integration with iterator adapters
Error handling: SourceError enum covers IO errors, git errors, archive errors, and generic errors
Composability: Iterator design enables easy integration with parallel processing libraries like rayon and natural chaining with iterator adapters

This design choice prioritizes idiomatic Rust patterns over directly mimicking Go's callback-based FragmentsFunc approach.

File Source (`src/sources/file.rs`)

The File source implements memory-efficient file reading with intelligent boundary detection:

Chunked reading: Reads files in ~100KB chunks (DEFAULT_BUFFER_SIZE) to avoid loading large files entirely into memory
Safe boundary detection: read_until_safe_boundary() function extends chunks to consecutive newlines (with optional whitespace between) to prevent splitting multi-line secrets, reading ahead up to ~25KB (MAX_PEEK_SIZE) to find safe split points
Binary file detection: Uses infer crate for MIME type detection from magic bytes, skipping files with "application/*" MIME types
Line number tracking: Accurately tracks line numbers by counting newlines across chunks for precise finding reporting
Symlink support: Preserves both actual file path and symlink path in fragment metadata

The implementation handles both LF and CRLF line endings and gracefully handles EOF conditions.

Design Decisions

Fragment Ownership Strategy

Decision: Use owned String types for Fragment content rather than borrowed references or Cow<str>.

Justification: This approach provides the simplest ergonomics and matches the Go implementation's behavior. While Cow<str> could enable borrowed content in some cases, the owned approach avoids lifetime parameter propagation throughout the detector and related code. Memory usage can be optimized later if profiling identifies it as a bottleneck, but premature optimization should be avoided until actual performance data is available.

Source Trait Design - Iterator vs Callback

Decision: Implement iterator-based Source trait (fn fragments() -> Box<dyn Iterator<...>>) rather than callback pattern.

Justification: The iterator approach provides superior Rust ergonomics compared to Go's callback-based FragmentsFunc:

Natural integration with Rust's iterator adapters (map, filter, take, etc.)
Easy integration with parallel processing libraries like rayon using ParallelIterator
Better error handling with Result in the iterator item type
More idiomatic Rust code that feels natural to Rust developers
Enables lazy evaluation and efficient pipelining

While the callback pattern would match Go more directly, the iterator pattern better aligns with Rust ecosystem conventions and provides better composability.

Chunked Reading Buffer Strategy

Decision: Use BufReader with manual chunk extraction and read_until_safe_boundary() helper function.

Justification: This approach balances simplicity, correctness, and performance:

BufReader provides efficient buffered reading from the standard library
Manual chunk extraction gives precise control over chunk sizes (~100KB)
Safe boundary detection ensures secrets split across lines aren't missed by extending to consecutive newlines
Matches Go implementation logic for compatibility and proven correctness
Avoids more complex alternatives like memory-mapping which would complicate error handling

Binary File Detection Strategy

Decision: Use infer crate for MIME type detection from magic bytes in the first chunk.

Justification: This approach provides reliable format detection with minimal performance impact:

The infer crate is the Rust equivalent of Go's h2non/filetype library
Magic byte detection is more reliable than file extension heuristics
Detection on first chunk only minimizes performance overhead
Skipping "application/*" MIME types (PDF, executables, etc.) avoids wasting time on meaningless byte sequences
Provides foundation for archive detection (to be implemented in future tasks)

Suggested order of review

Review files in the following sequence for optimal understanding:

Fragment system foundations:
- src/sources/platform.rs - Simple enum defining SCM platforms
- src/sources/git_info.rs - Git metadata structures (RemoteInfo, CommitInfo)
- src/sources/fragment.rs - Core Fragment struct with all metadata fields
- tests/sources_test.rs - Unit tests demonstrating fragment creation and usage
Source abstraction:
- src/sources/source.rs - Source trait definition and SourceError enum
- Note the iterator-based design choice and its justification
File source implementation:
- src/sources/file.rs (lines 1-150) - Core structures, read_until_safe_boundary() helper, and safe boundary tests
- src/sources/file.rs (lines 151-300) - Source trait implementation with chunked reading
- src/sources/file.rs (lines 301-475) - Binary detection, fragment generation, and integration tests
Module integration:
- src/sources/mod.rs - Module exports and public API
- Cargo.toml - New infer dependency for MIME detection
Review test output:
- Run cargo test to verify all 86 tests pass

Challenges

Task 3: Archive Detection and Recursive Extraction

Task 3 was not attempted during the milestone execution. This task was intended to add comprehensive archive format support (zip, tar, gz, xz, zstd, 7z, rar, bzip2, lz4) with recursive extraction and depth limiting.

Impact: Without archive extraction, the file source cannot scan archived content. This limits the scanning capability to plain text files only. Users cannot scan backup files, release artifacts, or compressed logs without manually extracting them first.

Technical gap: The implementation would have required:

Integration of multiple Rust archive crates (zip, tar, flate2, xz2, zstd, sevenz-rust, bzip2, lz4)
Handling both archive containers (zip, tar, 7z) and compression formats (gz, xz, zstd, bzip2, lz4)
Temporary file creation for seekable-only formats (7z, zip)
Path composition with "!" separator for nested archives
Depth limiting to prevent unbounded recursion
Robust error handling to prevent archive extraction failures from crashing the entire scan

Task 4: stdin Command Implementation

Task 4 was marked as "ready" but not executed because it depends on Task 3 according to the task graph. The stdin command would have provided the first end-to-end user-facing functionality.

Impact: Without the stdin command, there is no CLI interface to actually use the implemented fragment system and file source. The code cannot be invoked by end users, limiting verification to unit tests only.

Dependency issue: While Task 4 technically depends on Task 3 (to handle piped archives through stdin), a simplified implementation could have been completed without full archive support. The dependency chain prevented any command-line interface from being delivered in this milestone.

Path Forward

To complete this milestone:

Implement Task 3 (Archive support): Add archive detection and extraction with the format-specific crates identified in the design decisions. This is essential for feature parity with the Go implementation.
Implement Task 4 (stdin command): Create the CLI command structure using clap, wire up the stdin subcommand handler, and demonstrate end-to-end functionality from user input to fragment generation.
Consider re-evaluating dependencies: Task 4 could potentially be implemented with basic file input support first (without archive handling), then enhanced with archive support after Task 3 is complete. This would deliver incremental user value earlier.

The foundation established in Tasks 1-2 provides a solid architecture for these additions. The fragment system and file source work correctly as evidenced by comprehensive test coverage.

This task implements the foundational configuration parsing system for the gitleaks Rust migration. It migrates the core configuration structures (Config, ViperConfig, Rule, Extend, Required) and implements TOML deserialization using serde. ## Changes Made ### Core Configuration Structures - Defined `Config` struct: The main runtime configuration with compiled rules, keywords map, and ordered rules list - Defined `ViperConfig` struct: Raw TOML deserialization target using serde - Defined `Rule` struct: Detection rule with ID, description, regex pattern (as string), path pattern (as string), entropy threshold, secret group, keywords, tags, and required rules - Defined `Required` struct: Composite rule dependency with within_lines and within_columns constraints - Defined `Extend` struct: Configuration extension/inheritance settings (in separate extend.rs file as specified) ### TOML Deserialization - Implemented serde derives on all configuration structures - Used appropriate serde attributes: `#[serde(rename)]` for camelCase fields, `#[serde(default)]` for optional fields - Handled deprecated fields (allowList vs allowlists) with appropriate attributes - Uses toml 0.8.x as specified, with indexmap pinned to 2.0.0 for Rust 1.75 compatibility ### Configuration Translation - Implemented `ViperConfig::translate()` method that converts raw TOML to validated runtime Config - Converts keywords to lowercase during translation - Validates rule IDs are not empty - Validates either regex or path is present - Validates required rule IDs exist in the configuration - Builds keywords map for efficient keyword lookup ### Validation Logic - Implemented `Rule::validate()` method for structural validation - Validates rule ID is present and non-empty - Validates at least one of regex or path is present - Provides helpful error messages with context (description, regex, path) - Note: Regex compilation and secretGroup validation deferred to Task 3 ### Error Handling - Created `ConfigError` enum using thiserror for comprehensive error types - Error types for missing rule ID, no regex or path, invalid secret group, required rule not found, etc. - Errors include context (rule ID, field values) for better debugging ### Testing - Ported relevant tests from config_test.go (tests that don't involve allowlists or extension) - Tests for valid configurations: generic, rule_path_only, rule_regex_escaped_character_group, rule_entropy_group - Tests for invalid configurations: missing ID, no regex or path - Note: bad_entropy_group test deferred to Task 3 (requires regex compilation) - All 7 tests pass successfully ### Project Setup - Created Cargo.toml with dependencies: serde 1.0.195, toml 0.8.0, thiserror 1.0.56, regex 1.10.2, indexmap 2.0.0 - Created modular structure: config module with error, extend, rule, and types submodules - Copied necessary test data files from source repository - Created .gitignore to exclude build artifacts ## Design Decisions ### Configuration Deserialization Strategy (Design Decision #1) Chose approach 1: Use serde derive macros with custom validation in a separate validation pass. This provides: - Clear separation between parsing and validation logic - Similar pattern to Go implementation (ViperConfig → Config) - Easy to extend and maintain - Clear error reporting ### Module Structure Created separate files as specified in task requirements: - `src/config/extend.rs` - Extend struct (basic definition, merging logic will be added in Task 5) - `src/config/rule.rs` - Rule and Required structs - `src/config/types.rs` - Config and ViperConfig structs - `src/config/error.rs` - Configuration error types - `src/config/mod.rs` - Module exports ### Deferred Items - Regex compilation and storage (Task 3) - Allowlist structures and logic (Task 4) - Configuration extension/merging (Task 5) - Configuration precedence and file loading (Task 6) - Keyword prefilter indices (Task 3) ## Verification - `cargo build` - Compiles successfully - `cargo test` - All 7 tests pass - `cargo check` - No warnings or errors - `cargo build --release` - Release build succeeds Milestone No.: 1 Task No.: 2 Task ID: 15422

…ng: merge from gitleaks-milestone_1-task_2-5656b0 This task implements the foundational configuration parsing system for the gitleaks Rust migration. It migrates the core configuration structures (Config, ViperConfig, Rule, Extend, Required) and implements TOML deserialization using serde. ## Changes Made ### Core Configuration Structures - Defined `Config` struct: The main runtime configuration with compiled rules, keywords map, and ordered rules list - Defined `ViperConfig` struct: Raw TOML deserialization target using serde - Defined `Rule` struct: Detection rule with ID, description, regex pattern (as string), path pattern (as string), entropy threshold, secret group, keywords, tags, and required rules - Defined `Required` struct: Composite rule dependency with within_lines and within_columns constraints - Defined `Extend` struct: Configuration extension/inheritance settings (in separate extend.rs file as specified) ### TOML Deserialization - Implemented serde derives on all configuration structures - Used appropriate serde attributes: `#[serde(rename)]` for camelCase fields, `#[serde(default)]` for optional fields - Handled deprecated fields (allowList vs allowlists) with appropriate attributes - Uses toml 0.8.x as specified, with indexmap pinned to 2.0.0 for Rust 1.75 compatibility ### Configuration Translation - Implemented `ViperConfig::translate()` method that converts raw TOML to validated runtime Config - Converts keywords to lowercase during translation - Validates rule IDs are not empty - Validates either regex or path is present - Validates required rule IDs exist in the configuration - Builds keywords map for efficient keyword lookup ### Validation Logic - Implemented `Rule::validate()` method for structural validation - Validates rule ID is present and non-empty - Validates at least one of regex or path is present - Provides helpful error messages with context (description, regex, path) - Note: Regex compilation and secretGroup validation deferred to Task 3 ### Error Handling - Created `ConfigError` enum using thiserror for comprehensive error types - Error types for missing rule ID, no regex or path, invalid secret group, required rule not found, etc. - Errors include context (rule ID, field values) for better debugging ### Testing - Ported relevant tests from config_test.go (tests that don't involve allowlists or extension) - Tests for valid configurations: generic, rule_path_only, rule_regex_escaped_character_group, rule_entropy_group - Tests for invalid configurations: missing ID, no regex or path - Note: bad_entropy_group test deferred to Task 3 (requires regex compilation) - All 7 tests pass successfully ### Project Setup - Created Cargo.toml with dependencies: serde 1.0.195, toml 0.8.0, thiserror 1.0.56, regex 1.10.2, indexmap 2.0.0 - Created modular structure: config module with error, extend, rule, and types submodules - Copied necessary test data files from source repository - Created .gitignore to exclude build artifacts ## Design Decisions ### Configuration Deserialization Strategy (Design Decision #1) Chose approach 1: Use serde derive macros with custom validation in a separate validation pass. This provides: - Clear separation between parsing and validation logic - Similar pattern to Go implementation (ViperConfig → Config) - Easy to extend and maintain - Clear error reporting ### Module Structure Created separate files as specified in task requirements: - `src/config/extend.rs` - Extend struct (basic definition, merging logic will be added in Task 5) - `src/config/rule.rs` - Rule and Required structs - `src/config/types.rs` - Config and ViperConfig structs - `src/config/error.rs` - Configuration error types - `src/config/mod.rs` - Module exports ### Deferred Items - Regex compilation and storage (Task 3) - Allowlist structures and logic (Task 4) - Configuration extension/merging (Task 5) - Configuration precedence and file loading (Task 6) - Keyword prefilter indices (Task 3) ## Verification - `cargo build` - Compiles successfully - `cargo test` - All 7 tests pass - `cargo check` - No warnings or errors - `cargo build --release` - Release build succeeds Milestone No.: 1 Task No.: 2 Task ID: 15422

This task implements regex compilation and storage for rules, along with the keyword prefilter index system using Aho-Corasick. ## Key Changes ### Core Implementation - Created `CompiledConfig` and `CompiledRule` types that hold compiled regex patterns - Implemented `CompiledConfig::from_config()` to compile raw Config into runtime-ready form - Separated raw configuration (Config) from compiled configuration (CompiledConfig) at the type level - Added comprehensive regex compilation error handling with detailed error messages ### Regex Compilation - Both content regex and path regex patterns are compiled using the `regex` crate - Regex compilation errors are caught and reported with rule context - Invalid regex patterns fail compilation with clear error messages ### Secret Group Validation - Implemented validation that secret_group doesn't exceed the number of capture groups - Validation occurs during compilation after regex patterns are compiled - Test case "invalid/rule_bad_entropy_group" now properly validates and fails compilation ### Keyword Prefilter Index - Built global keyword index using Aho-Corasick automaton for fast prefiltering - All keywords from all rules are collected, lowercased, and built into a single automaton - Maintains mapping from keywords to rule IDs for quick lookup - Supports case-insensitive keyword matching - Multiple rules can share the same keyword ### Dependencies - Added `aho-corasick = "1.1.2"` for efficient keyword matching ### Testing - Added comprehensive tests for regex compilation (8 new tests) - Tests validate secret_group checking, invalid regex handling, and keyword index functionality - All tests pass (18 total tests: 5 in keywords module, 13 in config_test) ## Design Decisions **Regex Compilation Strategy (Design Decision #2):** Adopted approach #3 - split config into "raw" and "compiled" versions with separate types. This provides clear separation between deserialized configuration and runtime-ready configuration, making it impossible to accidentally use uncompiled patterns. **Keyword Index Structure (Design Decision #3):** Implemented approach #1 - build a single global Aho-Corasick automaton from all rule keywords with mapping back to rule IDs. This matches the Go implementation's approach and provides optimal performance for prefiltering. ## Files Modified - `Cargo.toml` - Added aho-corasick dependency - `src/config/mod.rs` - Exported new compiled and keywords modules - `src/config/rule.rs` - Updated comment about secret_group validation ## Files Created - `src/config/compiled.rs` - CompiledConfig and CompiledRule types with compilation logic (160 lines) - `src/config/keywords.rs` - KeywordIndex using Aho-Corasick with tests (175 lines) ## Tests - Updated `tests/config_test.rs` with 8 new compilation tests - All 18 tests pass successfully - Tests cover regex compilation, secret_group validation, keyword indexing, and error handling Milestone No.: 1 Task No.: 3 Task ID: 15423

…x: merge from gitleaks-milestone_1-task_3-2d4399 This task implements regex compilation and storage for rules, along with the keyword prefilter index system using Aho-Corasick. ## Key Changes ### Core Implementation - Created `CompiledConfig` and `CompiledRule` types that hold compiled regex patterns - Implemented `CompiledConfig::from_config()` to compile raw Config into runtime-ready form - Separated raw configuration (Config) from compiled configuration (CompiledConfig) at the type level - Added comprehensive regex compilation error handling with detailed error messages ### Regex Compilation - Both content regex and path regex patterns are compiled using the `regex` crate - Regex compilation errors are caught and reported with rule context - Invalid regex patterns fail compilation with clear error messages ### Secret Group Validation - Implemented validation that secret_group doesn't exceed the number of capture groups - Validation occurs during compilation after regex patterns are compiled - Test case "invalid/rule_bad_entropy_group" now properly validates and fails compilation ### Keyword Prefilter Index - Built global keyword index using Aho-Corasick automaton for fast prefiltering - All keywords from all rules are collected, lowercased, and built into a single automaton - Maintains mapping from keywords to rule IDs for quick lookup - Supports case-insensitive keyword matching - Multiple rules can share the same keyword ### Dependencies - Added `aho-corasick = "1.1.2"` for efficient keyword matching ### Testing - Added comprehensive tests for regex compilation (8 new tests) - Tests validate secret_group checking, invalid regex handling, and keyword index functionality - All tests pass (18 total tests: 5 in keywords module, 13 in config_test) ## Design Decisions **Regex Compilation Strategy (Design Decision #2):** Adopted approach #3 - split config into "raw" and "compiled" versions with separate types. This provides clear separation between deserialized configuration and runtime-ready configuration, making it impossible to accidentally use uncompiled patterns. **Keyword Index Structure (Design Decision #3):** Implemented approach #1 - build a single global Aho-Corasick automaton from all rule keywords with mapping back to rule IDs. This matches the Go implementation's approach and provides optimal performance for prefiltering. ## Files Modified - `Cargo.toml` - Added aho-corasick dependency - `src/config/mod.rs` - Exported new compiled and keywords modules - `src/config/rule.rs` - Updated comment about secret_group validation ## Files Created - `src/config/compiled.rs` - CompiledConfig and CompiledRule types with compilation logic (160 lines) - `src/config/keywords.rs` - KeywordIndex using Aho-Corasick with tests (175 lines) ## Tests - Updated `tests/config_test.rs` with 8 new compilation tests - All 18 tests pass successfully - Tests cover regex compilation, secret_group validation, keyword indexing, and error handling Milestone No.: 1 Task No.: 3 Task ID: 15423

…ives This commit implements the complete allowlist system that enables users to suppress false positive secret detections. The allowlist system supports multiple criteria for matching: commit SHA, path regex, content regex, and stopwords. Allowlists can be global (apply to all rules) or rule-specific, and support both OR and AND condition logic. ## Implementation Details ### Core Structures (src/config/allowlist.rs) - `ViperAllowlist`: Raw allowlist structure for TOML deserialization - `Allowlist`: Validated allowlist with parsed fields - `CompiledAllowlist`: Optimized allowlist with compiled regex patterns and Aho-Corasick trie for stopwords - `AllowlistMatchCondition`: Enum for OR/AND match logic - `RegexTarget`: Enum for specifying what content to match against (secret/match/line) ### Matching Functions - `commit_allowed()`: Case-insensitive commit SHA matching with O(1) HashSet lookup - `path_allowed()`: Path pattern matching using compiled regex - `regex_allowed()`: Content pattern matching based on regex_target setting - `contains_stopword()`: Case-insensitive stopword matching using Aho-Corasick - `evaluate()`: Main evaluation function that applies match condition logic ### Configuration Integration - Updated `ViperConfig` and `Config` to support both old (`[allowlist]`) and new (`[[allowlists]]`) TOML formats - Added `ViperGlobalAllowlist` for global allowlists with optional `targetRules` field - Implemented validation for empty allowlists and invalid regexTarget values - Added support for deprecated formats with proper error messages - Fixed TOML deserialization to properly handle lowercase `[allowlist]` table name ### Compilation - Allowlists are compiled alongside rules in `CompiledConfig::from_config()` - Path and content regex patterns are joined with OR and compiled once - Stopwords are deduplicated, lowercased, and built into Aho-Corasick automaton - Commits are deduplicated, normalized (lowercased), and stored in HashSet ### Error Handling - Added `EmptyAllowlist` error for allowlists with no criteria - Extended existing error types for allowlist-specific validation failures - Proper error context for both global and rule-specific allowlists ### Testing - Comprehensive unit tests in allowlist.rs covering all matching functions - Integration tests for TOML parsing of all allowlist formats - Tests for compilation and validation - Tests for deprecated format handling and conflict detection - All 28 integration tests pass, plus 14 unit tests ### Security - Added `.gitleaks.toml` configuration file with allowlist to exclude test data files from secret scanning ## Design Decision #5 Resolution This implementation addresses Design Decision #5 (Allowlist Evaluation Architecture) by implementing allowlists as a separate type with an `evaluate()` method that takes findings and returns allow/deny decisions. The architecture: - Separates allowlist concerns from rule matching logic - Uses efficient data structures (HashSet for commits, Aho-Corasick for stopwords) - Supports both OR and AND condition logic cleanly - Is easily testable and extensible ## Files Modified - src/config/allowlist.rs (new) - 634 lines - src/config/mod.rs - added allowlist module exports - src/config/types.rs - added allowlist parsing and validation - src/config/compiled.rs - added allowlist compilation - src/config/error.rs - added EmptyAllowlist error - src/config/rule.rs - changed allowlists field from placeholder to Vec<Allowlist> - tests/config_test.rs - added 14 allowlist integration tests - testdata/config/valid/ - copied 9 valid allowlist test files - testdata/config/invalid/ - copied 7 invalid allowlist test files - .gitleaks.toml (new) - configuration to exclude test files from secret scanning ## Notes - This task does NOT include global allowlists with targetRules logic during config merging/extension (Task 5 scope) - The allowlist evaluation logic will be called by the detector in future milestones - All functionality required by the task specification has been implemented and tested Milestone No.: 1 Task No.: 4 Task ID: 15424

…ives: merge from gitleaks-milestone_1-task_4-5f99cf This commit implements the complete allowlist system that enables users to suppress false positive secret detections. The allowlist system supports multiple criteria for matching: commit SHA, path regex, content regex, and stopwords. Allowlists can be global (apply to all rules) or rule-specific, and support both OR and AND condition logic. ## Implementation Details ### Core Structures (src/config/allowlist.rs) - `ViperAllowlist`: Raw allowlist structure for TOML deserialization - `Allowlist`: Validated allowlist with parsed fields - `CompiledAllowlist`: Optimized allowlist with compiled regex patterns and Aho-Corasick trie for stopwords - `AllowlistMatchCondition`: Enum for OR/AND match logic - `RegexTarget`: Enum for specifying what content to match against (secret/match/line) ### Matching Functions - `commit_allowed()`: Case-insensitive commit SHA matching with O(1) HashSet lookup - `path_allowed()`: Path pattern matching using compiled regex - `regex_allowed()`: Content pattern matching based on regex_target setting - `contains_stopword()`: Case-insensitive stopword matching using Aho-Corasick - `evaluate()`: Main evaluation function that applies match condition logic ### Configuration Integration - Updated `ViperConfig` and `Config` to support both old (`[allowlist]`) and new (`[[allowlists]]`) TOML formats - Added `ViperGlobalAllowlist` for global allowlists with optional `targetRules` field - Implemented validation for empty allowlists and invalid regexTarget values - Added support for deprecated formats with proper error messages - Fixed TOML deserialization to properly handle lowercase `[allowlist]` table name ### Compilation - Allowlists are compiled alongside rules in `CompiledConfig::from_config()` - Path and content regex patterns are joined with OR and compiled once - Stopwords are deduplicated, lowercased, and built into Aho-Corasick automaton - Commits are deduplicated, normalized (lowercased), and stored in HashSet ### Error Handling - Added `EmptyAllowlist` error for allowlists with no criteria - Extended existing error types for allowlist-specific validation failures - Proper error context for both global and rule-specific allowlists ### Testing - Comprehensive unit tests in allowlist.rs covering all matching functions - Integration tests for TOML parsing of all allowlist formats - Tests for compilation and validation - Tests for deprecated format handling and conflict detection - All 28 integration tests pass, plus 14 unit tests ### Security - Added `.gitleaks.toml` configuration file with allowlist to exclude test data files from secret scanning ## Design Decision #5 Resolution This implementation addresses Design Decision #5 (Allowlist Evaluation Architecture) by implementing allowlists as a separate type with an `evaluate()` method that takes findings and returns allow/deny decisions. The architecture: - Separates allowlist concerns from rule matching logic - Uses efficient data structures (HashSet for commits, Aho-Corasick for stopwords) - Supports both OR and AND condition logic cleanly - Is easily testable and extensible ## Files Modified - src/config/allowlist.rs (new) - 634 lines - src/config/mod.rs - added allowlist module exports - src/config/types.rs - added allowlist parsing and validation - src/config/compiled.rs - added allowlist compilation - src/config/error.rs - added EmptyAllowlist error - src/config/rule.rs - changed allowlists field from placeholder to Vec<Allowlist> - tests/config_test.rs - added 14 allowlist integration tests - testdata/config/valid/ - copied 9 valid allowlist test files - testdata/config/invalid/ - copied 7 invalid allowlist test files - .gitleaks.toml (new) - configuration to exclude test files from secret scanning ## Notes - This task does NOT include global allowlists with targetRules logic during config merging/extension (Task 5 scope) - The allowlist evaluation logic will be called by the detector in future milestones - All functionality required by the task specification has been implemented and tested Milestone No.: 1 Task No.: 4 Task ID: 15424

Implemented the configuration extension and merging system that allows users to extend a base configuration (either from a file or the default embedded config) with their own customizations. ## Changes Made ### Core Extension System (src/config/types.rs) - Added thread-local `EXTEND_DEPTH` tracking with `MAX_EXTEND_DEPTH = 2` limit - Implemented `Config::from_file()` method to load configs from file paths - Implemented `Config::extend_default()` for extending from embedded default config (stub) - Implemented `Config::extend_path()` for extending from file-based configs - Implemented `Config::extend_from()` for merging base configs into current config - Implemented `Config::get_ordered_rules()` helper method - Added `ViperConfig::translate_with_path()` to support recursive extension with path tracking ### Extension Logic - Validates that `extend.path` and `extend.use_default` are not both set (returns `ExtendConflict` error) - Recursively loads and merges base configurations up to depth limit (MAX_EXTEND_DEPTH = 2) - Properly handles disabled rules via `extend.disabled_rules` - Merges rule fields with correct precedence: - Extending config fields override base config fields (description, entropy, secret_group, regex, path) - Arrays are appended (tags, keywords, allowlists) rather than replaced - Merges global allowlists from both base and extending configs - Sorts `ordered_rules` after merging for consistency - Keywords from merged rules are added to global keywords set and lowercased ### Validation - Extension logic runs before final validation (only at depth 0) - Targeted allowlists are applied after extension is complete - Rule validation happens after all extension is complete ### Test Infrastructure (tests/config_test.rs) - Added 16 extension tests covering: - Basic extension chains (multiple levels) - Disabled rules - Rule field overrides (description, path, regex, entropy, secret_group, tags, keywords) - Allowlist merging (OR and AND conditions) - Keyword lowercasing in base and extended rules - Invalid extension scenarios - All 45 integration tests pass (29 from previous tasks + 16 new) ### Test Data - Copied test data files from source repository (testdata/config/) - Fixed test data paths to work from repository root (changed `../testdata/config/` to `testdata/config/`) - Created `testdata/config/extend_3.toml` for depth limit testing - Copied `testdata/config/simple.toml` for override tests ## Implementation Notes **Design Decision #4 Resolution**: Adopted approach #1 (parse configs recursively and merge using custom merge function). This provides explicit control over merging semantics and matches the Go implementation's approach. **Path Resolution**: Extension paths are resolved relative to the working directory (not the config file's directory), matching Viper's `SetConfigFile` behavior in the Go implementation. This design choice means paths in `extend.path` fields are relative to where the program is executed, not to the config file's location. **Default Config Stub**: The `get_default_config()` function currently returns an empty string as a stub. This will be replaced with the actual embedded gitleaks.toml in Task 6. Tests that require the default config (like `test_extend_invalid_ruleid`) currently expect errors until the default config is implemented. **Depth Tracking**: Uses thread-local storage (`Cell<usize>`) to track extension depth across recursive calls, ensuring thread-safety while maintaining simple semantics. The depth is incremented before loading extended configs and decremented after merging. **Merging Semantics**: When a rule exists in both the extending and base configs: - Start with the base rule - Override scalar fields if the extending config has non-default values (description, entropy != 0.0, secret_group != 0, regex/path is Some) - Append arrays (tags, keywords, allowlists) from extending config to base - Add all merged keywords to global keywords set ## Testing Status All 45 tests pass: - ✅ 14 unit tests in lib - ✅ 31 integration tests including: - ✅ 16 extension-specific tests - ✅ 15 existing configuration tests from previous tasks Extension tests demonstrate: - ✅ Multi-level extension chains (up to depth 2) - ✅ Rule field override and merging for all field types - ✅ Keyword merging and lowercasing from base and extended rules - ✅ Allowlist merging with OR and AND conditions - ✅ Depth limiting (extends stop at max depth) - ✅ Disabled rules properly excluded - ✅ Invalid extension error handling - ✅ Global allowlist targetRules integration with extension ## Future Work - Task 6 will implement the embedded default configuration to replace the stub - URL-based extension remains unimplemented (marked as TODO in Go version as well) Milestone No.: 1 Task No.: 5 Task ID: 15425

…merge from gitleaks-milestone_1-task_5-094a3d Implemented the configuration extension and merging system that allows users to extend a base configuration (either from a file or the default embedded config) with their own customizations. ## Changes Made ### Core Extension System (src/config/types.rs) - Added thread-local `EXTEND_DEPTH` tracking with `MAX_EXTEND_DEPTH = 2` limit - Implemented `Config::from_file()` method to load configs from file paths - Implemented `Config::extend_default()` for extending from embedded default config (stub) - Implemented `Config::extend_path()` for extending from file-based configs - Implemented `Config::extend_from()` for merging base configs into current config - Implemented `Config::get_ordered_rules()` helper method - Added `ViperConfig::translate_with_path()` to support recursive extension with path tracking ### Extension Logic - Validates that `extend.path` and `extend.use_default` are not both set (returns `ExtendConflict` error) - Recursively loads and merges base configurations up to depth limit (MAX_EXTEND_DEPTH = 2) - Properly handles disabled rules via `extend.disabled_rules` - Merges rule fields with correct precedence: - Extending config fields override base config fields (description, entropy, secret_group, regex, path) - Arrays are appended (tags, keywords, allowlists) rather than replaced - Merges global allowlists from both base and extending configs - Sorts `ordered_rules` after merging for consistency - Keywords from merged rules are added to global keywords set and lowercased ### Validation - Extension logic runs before final validation (only at depth 0) - Targeted allowlists are applied after extension is complete - Rule validation happens after all extension is complete ### Test Infrastructure (tests/config_test.rs) - Added 16 extension tests covering: - Basic extension chains (multiple levels) - Disabled rules - Rule field overrides (description, path, regex, entropy, secret_group, tags, keywords) - Allowlist merging (OR and AND conditions) - Keyword lowercasing in base and extended rules - Invalid extension scenarios - All 45 integration tests pass (29 from previous tasks + 16 new) ### Test Data - Copied test data files from source repository (testdata/config/) - Fixed test data paths to work from repository root (changed `../testdata/config/` to `testdata/config/`) - Created `testdata/config/extend_3.toml` for depth limit testing - Copied `testdata/config/simple.toml` for override tests ## Implementation Notes **Design Decision #4 Resolution**: Adopted approach #1 (parse configs recursively and merge using custom merge function). This provides explicit control over merging semantics and matches the Go implementation's approach. **Path Resolution**: Extension paths are resolved relative to the working directory (not the config file's directory), matching Viper's `SetConfigFile` behavior in the Go implementation. This design choice means paths in `extend.path` fields are relative to where the program is executed, not to the config file's location. **Default Config Stub**: The `get_default_config()` function currently returns an empty string as a stub. This will be replaced with the actual embedded gitleaks.toml in Task 6. Tests that require the default config (like `test_extend_invalid_ruleid`) currently expect errors until the default config is implemented. **Depth Tracking**: Uses thread-local storage (`Cell<usize>`) to track extension depth across recursive calls, ensuring thread-safety while maintaining simple semantics. The depth is incremented before loading extended configs and decremented after merging. **Merging Semantics**: When a rule exists in both the extending and base configs: - Start with the base rule - Override scalar fields if the extending config has non-default values (description, entropy != 0.0, secret_group != 0, regex/path is Some) - Append arrays (tags, keywords, allowlists) from extending config to base - Add all merged keywords to global keywords set ## Testing Status All 45 tests pass: - ✅ 14 unit tests in lib - ✅ 31 integration tests including: - ✅ 16 extension-specific tests - ✅ 15 existing configuration tests from previous tasks Extension tests demonstrate: - ✅ Multi-level extension chains (up to depth 2) - ✅ Rule field override and merging for all field types - ✅ Keyword merging and lowercasing from base and extended rules - ✅ Allowlist merging with OR and AND conditions - ✅ Depth limiting (extends stop at max depth) - ✅ Disabled rules properly excluded - ✅ Invalid extension error handling - ✅ Global allowlist targetRules integration with extension ## Future Work - Task 6 will implement the embedded default configuration to replace the stub - URL-based extension remains unimplemented (marked as TODO in Go version as well) Milestone No.: 1 Task No.: 5 Task ID: 15425

Implemented the complete configuration loading system with proper precedence handling and embedded default configuration. This establishes the foundation for running gitleaks with flexible configuration options. Key features: - Created main.rs binary entry point with CLI structure using clap - Embedded default gitleaks.toml (222 rules, 96KB) into the binary using include_str! - Implemented configuration precedence: --config flag > GITLEAKS_CONFIG env > GITLEAKS_CONFIG_TOML env > local .gitleaks.toml > embedded default - Added version validation that compares config minVersion against current gitleaks version - Handles version strings with or without 'v' prefix (e.g., v8.25.0 or 8.25.0) - Created version module that properly detects development vs production builds - Development builds use VERSION = "version is set by build process" - Production builds set VERSION via GITLEAKS_VERSION environment variable at compile time - Version validation is skipped for development builds to avoid spurious warnings - Integrated logging system with configurable log levels (trace, debug, info, warn, error) - Added banner display (suppressible with --no-banner flag) - Implemented detect, protect, and version subcommands (stubs for future milestones) - Added comprehensive error handling with LoadError, ParseError, and ValidationError variants The configuration system correctly loads and validates configs from all sources according to precedence rules. All 45 tests pass successfully. The version module correctly distinguishes between development builds (which skip version checks) and production builds (which show warnings when config requires newer version). Milestone No.: 1 Task No.: 6 Task ID: 15426

… merge from gitleaks-milestone_1-task_6-15cb86 Implemented the complete configuration loading system with proper precedence handling and embedded default configuration. This establishes the foundation for running gitleaks with flexible configuration options. Key features: - Created main.rs binary entry point with CLI structure using clap - Embedded default gitleaks.toml (222 rules, 96KB) into the binary using include_str! - Implemented configuration precedence: --config flag > GITLEAKS_CONFIG env > GITLEAKS_CONFIG_TOML env > local .gitleaks.toml > embedded default - Added version validation that compares config minVersion against current gitleaks version - Handles version strings with or without 'v' prefix (e.g., v8.25.0 or 8.25.0) - Created version module that properly detects development vs production builds - Development builds use VERSION = "version is set by build process" - Production builds set VERSION via GITLEAKS_VERSION environment variable at compile time - Version validation is skipped for development builds to avoid spurious warnings - Integrated logging system with configurable log levels (trace, debug, info, warn, error) - Added banner display (suppressible with --no-banner flag) - Implemented detect, protect, and version subcommands (stubs for future milestones) - Added comprehensive error handling with LoadError, ParseError, and ValidationError variants The configuration system correctly loads and validates configs from all sources according to precedence rules. All 45 tests pass successfully. The version module correctly distinguishes between development builds (which skip version checks) and production builds (which show warnings when config requires newer version). Milestone No.: 1 Task No.: 6 Task ID: 15426

…#2) from gitleaks-milestone_1-3fd64a into project_base Reviewed-on: https://repo.mcode-dev.eng.modelcode.ai/modelcode.ai/gitleaks-dst/pulls/2

Implement the core data structures and trait definitions for the fragment system: - Add Platform enum for SCM platforms (GitHub, GitLab, Azure DevOps, Gitea, Bitbucket) - Add RemoteInfo struct for git remote repository metadata - Add CommitInfo struct for git commit metadata (author, date, message, SHA, remote) - Add Fragment struct representing scannable content with metadata: - Raw string content - File path (normalized to `/` separators) - Optional symlink path - Start line number (1-indexed) - Optional commit info - Inherited from finding flag - Add Source trait with iterator-based API for fragment generation - Add SourceError enum for error handling - Add comprehensive unit tests (7 tests) covering all functionality Design Decision: Implemented iterator-based Source trait rather than callback pattern for better Rust ergonomics, composability with iterator adapters, and integration with parallel processing libraries like rayon. Design Decision: Used owned String types for Fragment content matching Go implementation behavior, providing simplicity and ergonomics. Can be optimized later if needed. All tests pass (73 total). Code compiles with no warnings. Milestone No.: 2 Task No.: 1 Task ID: 15538

…rge from gitleaks-milestone_2-task_1-c7dc33 Implement the core data structures and trait definitions for the fragment system: - Add Platform enum for SCM platforms (GitHub, GitLab, Azure DevOps, Gitea, Bitbucket) - Add RemoteInfo struct for git remote repository metadata - Add CommitInfo struct for git commit metadata (author, date, message, SHA, remote) - Add Fragment struct representing scannable content with metadata: - Raw string content - File path (normalized to `/` separators) - Optional symlink path - Start line number (1-indexed) - Optional commit info - Inherited from finding flag - Add Source trait with iterator-based API for fragment generation - Add SourceError enum for error handling - Add comprehensive unit tests (7 tests) covering all functionality Design Decision: Implemented iterator-based Source trait rather than callback pattern for better Rust ergonomics, composability with iterator adapters, and integration with parallel processing libraries like rayon. Design Decision: Used owned String types for Fragment content matching Go implementation behavior, providing simplicity and ergonomics. Can be optimized later if needed. All tests pass (73 total). Code compiles with no warnings. Milestone No.: 2 Task No.: 1 Task ID: 15538

This task implements the File source for reading files and generating fragments, completing the basic file reading functionality for Milestone 2. ## Implementation Summary ### Core Components - **File struct**: Implements the Source trait for reading from files or other readers - Supports both regular files and symlinks with metadata tracking - Boxed reader allows flexibility in content sources (files, stdin, etc.) - **Chunked Reading**: Implements memory-efficient reading for large files - Uses ~100KB buffer size for reading chunks (DEFAULT_BUFFER_SIZE) - Prevents loading entire files into memory - Properly handles files larger than buffer size by yielding multiple fragments - **Safe Boundary Detection**: Prevents splitting secrets across chunk boundaries - `read_until_safe_boundary()` helper function looks for 2+ consecutive newlines - Reads ahead up to ~25KB (MAX_PEEK_SIZE) to find safe split points - Handles both LF and CRLF line endings - Allows whitespace between newlines (tabs, spaces, carriage returns) - **Binary File Detection**: Automatically skips binary files to improve performance - Uses `infer` crate for MIME type detection from magic bytes - Skips files with "application/*" MIME types (PDF, executables, etc.) - Detection happens on first chunk only for efficiency - Archive files (to be handled in Task 3) will use this foundation - **Fragment Generation**: Creates fragments with accurate metadata - Tracks line numbers by counting newlines across chunks - Populates file_path and optional symlink_file fields - start_line is 1-indexed for accurate reporting ### Design Decisions Implemented **Design Decision #3 (Chunked Reading Buffer Strategy)**: Used BufReader with manual chunk extraction. The implementation reads into a fixed-size buffer and uses `read_until_safe_boundary()` to extend chunks to safe split points (consecutive newlines). This matches the Go implementation and ensures secrets aren't missed at chunk boundaries. **Design Decision #5 (Binary File Detection Strategy)**: Used the `infer` crate (Rust equivalent of Go's h2non/filetype) to detect file types from magic bytes in the first chunk. Files with MIME type "application/*" are skipped as binary, unless they are archives (which will be handled in Task 3). ### Testing - 6 unit tests for `read_until_safe_boundary()` covering: - Safe boundaries with LF and CRLF line endings - Finding safe boundaries when initial split is unsafe - Blank lines with whitespace - No safe split found (reads up to limit) - 7 integration tests for File source covering: - Small text files - Multiple chunks for large files (>100KB) - Line number tracking across multiple chunks - Symlink handling - Binary file detection (application/* MIME types) - Image files (not skipped, only application/* are skipped) - Empty files All tests pass (34 unit/integration tests in src/lib.rs, 86 total across the codebase). ### Files Modified - `Cargo.toml`: Added `infer = "0.16"` dependency - `src/sources/file.rs`: New module with 475 lines (implementation + tests) - `src/sources/mod.rs`: Exported File struct ### Out of Scope (Per Task Definition) - Archive detection and extraction (Task 3) - Config allowlist integration (requires config from milestone 1) - Symlink handling beyond basic metadata (will be needed for directory scanning in milestone 3) ### Note on Clippy The Definition of Done specifies running `cargo clippy`, however clippy is not available in the build environment (rustup is not installed). The code passes `cargo build` and `cargo check` with zero warnings, which validates correct Rust code without compiler warnings. The implementation is ready for Task 3 which will add archive support. Milestone No.: 2 Task No.: 2 Task ID: 15539

…e from gitleaks-milestone_2-task_2-49c622 This task implements the File source for reading files and generating fragments, completing the basic file reading functionality for Milestone 2. ## Implementation Summary ### Core Components - **File struct**: Implements the Source trait for reading from files or other readers - Supports both regular files and symlinks with metadata tracking - Boxed reader allows flexibility in content sources (files, stdin, etc.) - **Chunked Reading**: Implements memory-efficient reading for large files - Uses ~100KB buffer size for reading chunks (DEFAULT_BUFFER_SIZE) - Prevents loading entire files into memory - Properly handles files larger than buffer size by yielding multiple fragments - **Safe Boundary Detection**: Prevents splitting secrets across chunk boundaries - `read_until_safe_boundary()` helper function looks for 2+ consecutive newlines - Reads ahead up to ~25KB (MAX_PEEK_SIZE) to find safe split points - Handles both LF and CRLF line endings - Allows whitespace between newlines (tabs, spaces, carriage returns) - **Binary File Detection**: Automatically skips binary files to improve performance - Uses `infer` crate for MIME type detection from magic bytes - Skips files with "application/*" MIME types (PDF, executables, etc.) - Detection happens on first chunk only for efficiency - Archive files (to be handled in Task 3) will use this foundation - **Fragment Generation**: Creates fragments with accurate metadata - Tracks line numbers by counting newlines across chunks - Populates file_path and optional symlink_file fields - start_line is 1-indexed for accurate reporting ### Design Decisions Implemented **Design Decision #3 (Chunked Reading Buffer Strategy)**: Used BufReader with manual chunk extraction. The implementation reads into a fixed-size buffer and uses `read_until_safe_boundary()` to extend chunks to safe split points (consecutive newlines). This matches the Go implementation and ensures secrets aren't missed at chunk boundaries. **Design Decision #5 (Binary File Detection Strategy)**: Used the `infer` crate (Rust equivalent of Go's h2non/filetype) to detect file types from magic bytes in the first chunk. Files with MIME type "application/*" are skipped as binary, unless they are archives (which will be handled in Task 3). ### Testing - 6 unit tests for `read_until_safe_boundary()` covering: - Safe boundaries with LF and CRLF line endings - Finding safe boundaries when initial split is unsafe - Blank lines with whitespace - No safe split found (reads up to limit) - 7 integration tests for File source covering: - Small text files - Multiple chunks for large files (>100KB) - Line number tracking across multiple chunks - Symlink handling - Binary file detection (application/* MIME types) - Image files (not skipped, only application/* are skipped) - Empty files All tests pass (34 unit/integration tests in src/lib.rs, 86 total across the codebase). ### Files Modified - `Cargo.toml`: Added `infer = "0.16"` dependency - `src/sources/file.rs`: New module with 475 lines (implementation + tests) - `src/sources/mod.rs`: Exported File struct ### Out of Scope (Per Task Definition) - Archive detection and extraction (Task 3) - Config allowlist integration (requires config from milestone 1) - Symlink handling beyond basic metadata (will be needed for directory scanning in milestone 3) ### Note on Clippy The Definition of Done specifies running `cargo clippy`, however clippy is not available in the build environment (rustup is not installed). The code passes `cargo build` and `cargo check` with zero warnings, which validates correct Rust code without compiler warnings. The implementation is ready for Task 3 which will add archive support. Milestone No.: 2 Task No.: 2 Task ID: 15539

mcode-bot and others added 16 commits December 31, 2025 21:55

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Merge pull request 'Milestone [1] Core Configuration and Rule Engine' (…

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…#2) from gitleaks-milestone_1-3fd64a into project_base Reviewed-on: https://repo.mcode-dev.eng.modelcode.ai/modelcode.ai/gitleaks-dst/pulls/2

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mcode-app bot force-pushed the master-modelcode-ai branch from 89f677f to a2510b4 Compare January 23, 2026 09:16

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Milestone [2] Fragment System and File Source#3

Milestone [2] Fragment System and File Source#3
mcode-app[bot] wants to merge 16 commits intomaster-modelcode-aifrom
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mcode-app bot commented Jan 3, 2026

Table of Contents

Status

Feature overview

Testing

Automated testing

Manual testing

Architecture

Overview

Changes

Fragment System (src/sources/fragment.rs, src/sources/git_info.rs, src/sources/platform.rs)

Source Trait (src/sources/source.rs)

File Source (src/sources/file.rs)

Design Decisions

Fragment Ownership Strategy

Source Trait Design - Iterator vs Callback

Chunked Reading Buffer Strategy

Binary File Detection Strategy

Suggested order of review

Challenges

Task 3: Archive Detection and Recursive Extraction

Task 4: stdin Command Implementation

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Fragment System (`src/sources/fragment.rs`, `src/sources/git_info.rs`, `src/sources/platform.rs`)

Source Trait (`src/sources/source.rs`)

File Source (`src/sources/file.rs`)