hfs_catalog

1. Overview

The hfs_catalog.cpp file decodes catalog records, names, hierarchy and file metadata from HFS+ volumes.

This is an implementation file. It contains executable logic for the subsystem, including parsing, I/O, validation, recovery flow, or graphical behavior declared by the corresponding interface.

Its paired source or interface file is hfs_catalog.hpp.

Primary responsibilities:

  • Parse catalog keys and records
  • Reconstruct parent-child relationships
  • Extract file and folder metadata
  • Support recovery path reconstruction

2. File Identity and Scope

  • Source path: src/hfs_catalog.cpp
  • Language: C++
  • File role: implementation file
  • Physical lines: 174
  • Non-empty lines: 161
  • SHA-256: 7f9f86ff91ea0bf9cbd8f3c7688207c23e6665dbcd6c491a3c1466138414b0f9

Declared namespaces:

  • hfs

3. Dependencies

3.1 Project Headers

  • hfs_catalog.hpp
  • hfs_unicode.hpp

3.2 Standard and External Headers

  • algorithm
  • cstring

These dependencies define the file’s compile-time integration with the recovery engine, GTK interface, on-disk format decoders, operating-system services, or C++ standard library.

4. Declared Types

No class, structure, or enumeration definition is declared directly in this file.

5. Constants and Configuration Values

No preprocessor or compile-time constants were detected as top-level declarations in this file.

5.1 Operational Strings, Paths, Formats, or Commands

The following code literals are operationally relevant and may identify filesystem paths, helper commands, formats, signatures, or subsystem labels:

  • hfs_catalog.hpp
  • hfs_unicode.hpp
  • HFS+ Private Data

6. Data Members and Persistent State

No class data members are declared directly in this file, or the file primarily implements methods declared elsewhere.

7. API and Function Inventory

The following callable interfaces or definitions were detected:

  • BSDInfo parse_bsd_info(const unsigned char*p) – Reads or derives the requested information and returns or stores the decoded result.
  • FinderInfo16 parse_finder_info(const unsigned char*p) – Reads or derives the requested information and returns or stores the decoded result.
  • bool parse_catalog_folder(const unsigned char*body,uint32_t body_len,CatalogFolder&out) – Reads or derives the requested information and returns or stores the decoded result.
  • bool parse_catalog_file(const unsigned char*body,uint32_t body_len,CatalogFile&out) – Reads or derives the requested information and returns or stores the decoded result.
  • std::string catalog_name_to_host(const unsigned char*utf16be_name,uint16_t name_units) – Implements the operation identified by this API and updates or returns the associated state.
  • bool is_private_data_folder_name(const unsigned char*utf16be_name,uint16_t name_units) – Evaluates the stated condition and returns the corresponding Boolean result.
  • uint32_t parse_inode_filename(const unsigned char*utf16be_name,uint16_t name_units) – Reads or derives the requested information and returns or stores the decoded result.

8. Operational Flow

The subsystem represented by this file normally participates in the following flow:

  1. Parse catalog keys and records.
  2. Reconstruct parent-child relationships.
  3. Extract file and folder metadata.
  4. Support recovery path reconstruction.
  5. Expose or execute the detected APIs: parse_bsd_info, parse_finder_info, parse_catalog_folder, parse_catalog_file, catalog_name_to_host, is_private_data_folder_name, parse_inode_filename.
  6. Return explicit results, progress data, recovered records, or diagnostics to the calling layer.

9. Validation and Error Handling

  • Byte offsets, sizes and lengths must be validated before arithmetic and before every read to avoid overflow and out-of-bounds access.
  • Input and output paths require existence checks, permission handling and safe destination construction.

10. Runtime, Concurrency, and Resource Management

  • Deterministic behavior: callers depend on explicit return values and stable data structures to distinguish successful recovery from partial or invalid results.

11. Security and Data-Recovery Considerations

  • Recovery code should prefer read-only source access and avoid writing to the original damaged medium.
  • Raw devices and image files are treated as untrusted binary input; every offset and length must remain bounded by the source size.

12. Implementation Considerations

  • The implementation should remain aligned with declarations in the paired header and preserve documented return-value semantics.

13. Integration with the Recovery Pipeline

  • The file belongs to the source-discovery, parsing or support layer.
  • Its results feed scanner, recovery or reporting modules through shared models.
  • The API should remain deterministic so higher layers can combine results safely.

14. Licensing and Provenance

No explicit copyright or software-license statement was detected in the opening section of this individual file. Distribution terms should therefore be verified against the project-level license and repository metadata.

The SHA-256 value in this document can be used to associate the generated documentation with the exact source version analyzed.

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