Jaehyung Yu

21 papers C 2Journal 19
YearRankTypeTitle / Venue / Authors
2025 J jnl
IEEE Trans. Geosci. Remote. Sens.
Hyeji Sim, Jaehyung Yu, Lei Wang, Chanhyeok Park, Huy Hoa Huynh, Hyun-Cheol Kim
2025 J jnl
Int. J. Appl. Earth Obs. Geoinformation
Huy Hoa Huynh, Jaehyung Yu, Lei Wang, Trung Hieu Pham, Jin-Young Lee
2025 J jnl
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Grace Malvine Moughoa Boussoughou Ngolo, Jaehyung Yu, Lei Wang, Hyun-Cheol Kim
2023 J jnl
IEEE Trans. Geosci. Remote. Sens.
Jihee Seo, Jaehyung Yu, Lei Wang
2023 J jnl
Remote. Sens.
Habimana Emmanuel, Jaehyung Yu, Lei Wang, Sung Hi Choi, Digne Edmond Rwabuhungu Rwatangabo
2023 J jnl
IEEE Trans. Geosci. Remote. Sens.
Ji Hye Shin, Jaehyung Yu, Lei Wang, Jihee Seo, Huy Hoa Huynh, Geum-Hee Jeong
2022 J jnl
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Hyesu Kim, Jaehyung Yu, Lei Wang, Chanhyeok Park, Hyuk Soo Han, Seong-Geon Jang
2022 J jnl
Remote. Sens.
Yongsik Jeong, Jaehyung Yu, Lei Wang, Huy Hoa Huynh, Hyun-Cheol Kim
2021 J jnl
Int. J. Appl. Earth Obs. Geoinformation
Yongsik Jeong, Jaehyung Yu, Lei Wang, Kwang-Jae Lee
2021 J jnl
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Kyuhun Shim, Jaehyung Yu, Lei Wang, Sangin Lee, Sang-Mo Koh, Bum Han Lee
2020 J jnl
Remote. Sens.
Baru Chung, Jaehyung Yu, Lei Wang, Nam Hoon Kim, Bum Han Lee, Sang-Mo Koh, Sangin Lee
2020 J jnl
IEEE Trans. Geosci. Remote. Sens.
Haein Shin, Jaehyung Yu, Lei Wang, Yongsik Jeong, Jieun Kim
2020 J jnl
Remote. Sens.
Hyesu Kim, Jaehyung Yu, Lei Wang, Yongsik Jeong, Jieun Kim
2019 J jnl
IEEE Trans. Geosci. Remote. Sens.
Jeonghwa Lim, Jaehyung Yu, Lei Wang, Yongsik Jeong, Ji Hye Shin
2019 J jnl
IEEE Trans. Geosci. Remote. Sens.
Ji Hye Shin, Jaehyung Yu, Lei Wang, Jieun Kim, Sang-Mo Koh, Soon-Oh Kim
2018 J jnl
Remote. Sens.
Yongsik Jeong, Jaehyung Yu, Lei Wang, Ji Hye Shin
2017 J jnl
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Haein Shin, Jaehyung Yu, Yongsik Jeong, Lei Wang, Dong-Yoon Yang
2017 C conf
IGARSS
Ji Hye Shin, Jaehyung Yu, Seyoung Kim, Haein Shin, Sang-Mo Koh
2017 C conf
IGARSS
Haein Shin, Jaehyung Yu, Ji Hye Shin, Yongsik Jeong, Seyoung Kim, Gilljae Lee
2011 J jnl
IEEE Geosci. Remote. Sens. Lett.
Lei Wang, Jaehyung Yu
2008 J jnl
IEEE Geosci. Remote. Sens. Lett.
Hongxing Liu, Zhiyuan Zhao, Jaehyung Yu, Kenneth C. Jezek
tests/scripts/test_macho_extractors_local.py
← Index tests/scripts/test_macho_extractors_local.py python
#!/usr/bin/env python3
"""
Local MachO extractors test - test actual extractors without server connections
"""

import sys
import os
import logging
import hashlib
from datetime import datetime, timezone
from typing import Dict, Any, Optional
from unittest.mock import Mock, patch

# Add the redb directory to the path so we can import the extractors
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'redb'))

# Mock settings to avoid database connections
with patch.dict('os.environ', {'REDB_ENV': 'test'}):
    # Import the actual extractors
    from redb.extractors.macho_extractors.macho_features import MachOFeaturesExtractor
    from redb.extractors.macho_extractors.macho_segments import MachOSegmentExtractor
    from redb.extractors.macho_extractors.macho_imports import MachOImportExtractor
    from redb.extractors.macho_extractors.macho_exports import MachOExportExtractor
    from redb.extractors.macho_extractors.macho_dylibs import MachODylibExtractor
    from redb.extractors.macho_extractors.macho_signature import MachOSignatureExtractor
    from redb.extractors.macho_extractors.macho_universal import MachOUniversalExtractor

def setup_logging():
    """Setup basic logging configuration."""
    logging.basicConfig(
        level=logging.INFO,
        format='%(asctime)s - %(levelname)s - %(message)s'
    )
    return logging.getLogger(__name__)

class MockLogger:
    """Mock logger for testing without RedB dependencies."""
    def __init__(self):
        self.logger = logging.getLogger(__name__)
    
    def debug(self, msg):
        self.logger.debug(msg)
    
    def info(self, msg):
        self.logger.info(msg)
    
    def warning(self, msg):
        self.logger.warning(msg)
    
    def error(self, msg):
        self.logger.error(msg)

class MockExporter:
    """Mock exporter that does nothing."""
    def export(self, data):
        pass

def create_mock_extractor(extractor_class, filepath):
    """Create an extractor instance with mocked dependencies."""
    log = MockLogger()
    
    # Mock the exporters to avoid database connections
    mock_exporters = [MockExporter()]
    
    # Create the extractor with mocked dependencies
    extractor = extractor_class(
        filepath=filepath,
        log=log,
        exporters=mock_exporters,
        index_prefix="test",
        elastic_index="test_macho",
        known_benign=False,
        known_malicious=False
    )
    
    return extractor

def test_extractor(extractor_class, filepath, extractor_name):
    """Test a specific extractor."""
    log = setup_logging()
    log.info(f"Testing {extractor_name}...")
    
    try:
        # Create the extractor with mocked dependencies
        extractor = create_mock_extractor(extractor_class, filepath)
        
        if not extractor.macho:
            log.error(f"{extractor_name}: No MachO object created")
            return False

        # Test the actual extract method
        result = extractor.extract()
        
        if result:
            log.info(f"{extractor_name}: Successfully extracted data")
            print(f"\n{'='*60}")
            print(f"=== {extractor_name.upper()} RESULTS ===")
            print(f"{'='*60}")
            
            if isinstance(result, list):
                print(f"๐Ÿ“Š Extracted {len(result)} items")
                print()
                for i, item in enumerate(result):
                    print(f"๐Ÿ“ฆ Item {i+1}:")
                    print(f"   {'โ”€'*40}")
                    # Handle dataclass objects in lists
                    if hasattr(item, '__dataclass_fields__'):
                        from dataclasses import asdict
                        item_dict = asdict(item)
                        for key, value in item_dict.items():
                            if isinstance(value, (list, dict)):
                                if isinstance(value, list):
                                    print(f"   ๐Ÿ”น {key}: List with {len(value)} items")
                                    print(f"      {value}")
                                elif isinstance(value, dict):
                                    print(f"   ๐Ÿ”น {key}: Dict with {len(value)} keys")
                                    for k, v in value.items():
                                        print(f"      {k}: {v}")
                            else:
                                print(f"   ๐Ÿ”น {key}: {value}")
                    else:
                        # Regular dict
                        for key, value in item.items():
                            if isinstance(value, (list, dict)):
                                if isinstance(value, list):
                                    print(f"   ๐Ÿ”น {key}: List with {len(value)} items")
                                    print(f"      {value}")
                                elif isinstance(value, dict):
                                    print(f"   ๐Ÿ”น {key}: Dict with {len(value)} keys")
                                    for k, v in value.items():
                                        print(f"      {k}: {v}")
                            else:
                                print(f"   ๐Ÿ”น {key}: {value}")
                    print()
            else:
                print("๐Ÿ“Š Extracted data:")
                print()
                # Handle dataclass objects
                if hasattr(result, '__dataclass_fields__'):
                    # It's a dataclass, use dataclasses.asdict
                    from dataclasses import asdict
                    result_dict = asdict(result)
                    for key, value in result_dict.items():
                        if isinstance(value, (list, dict)):
                            if isinstance(value, list):
                                print(f"๐Ÿ”น {key}: List with {len(value)} items")
                                print(f"   {value}")
                            elif isinstance(value, dict):
                                print(f"๐Ÿ”น {key}: Dict with {len(value)} keys")
                                for k, v in value.items():
                                    print(f"   {k}: {v}")
                        else:
                            print(f"๐Ÿ”น {key}: {value}")
                        print()
                else:
                    # It's a regular dict
                    for key, value in result.items():
                        if isinstance(value, (list, dict)):
                            if isinstance(value, list):
                                print(f"๐Ÿ”น {key}: List with {len(value)} items")
                                print(f"   {value}")
                            elif isinstance(value, dict):
                                print(f"๐Ÿ”น {key}: Dict with {len(value)} keys")
                                for k, v in value.items():
                                    print(f"   {k}: {v}")
                        else:
                            print(f"๐Ÿ”น {key}: {value}")
                        print()
        else:
            log.warning(f"{extractor_name}: No data extracted")
            print(f"\nโŒ {extractor_name}: No data extracted")
        
        return True
        
    except Exception as e:
        log.error(f"{extractor_name}: Error during extraction: {e}")
        import traceback
        traceback.print_exc()
        return False

def main():
    """Main function."""
    if len(sys.argv) < 2:
        print("Usage: python test_macho_extractors_local.py <macho_file> [extractor_name]")
        print("\nAvailable extractors:")
        print("  features    - Basic MachO header and metadata")
        print("  segments    - Segment information and analysis")
        print("  imports     - Imported functions and libraries")
        print("  exports     - Exported symbols")
        print("  dylibs      - Dynamic library dependencies")
        print("  signature   - Code signing information")
        print("  universal   - FAT/Universal binary information")
        print("  all         - Test all extractors")
        sys.exit(1)
    
    filepath = sys.argv[1]
    extractor_name = sys.argv[2] if len(sys.argv) > 2 else "all"
    
    if not os.path.exists(filepath):
        print(f"File not found: {filepath}")
        sys.exit(1)
    
    # Define extractors
    extractors = {
        'features': (MachOFeaturesExtractor, "MachO Features"),
        'segments': (MachOSegmentExtractor, "MachO Segments"),
        'imports': (MachOImportExtractor, "MachO Imports"),
        'exports': (MachOExportExtractor, "MachO Exports"),
        'dylibs': (MachODylibExtractor, "MachO Dylibs"),
        'signature': (MachOSignatureExtractor, "MachO Code Signature"),
        'universal': (MachOUniversalExtractor, "MachO Universal/FAT"),
    }
    
    if extractor_name == "all":
        print(f"Testing all extractors with file: {filepath}")
        success_count = 0
        for name, (extractor_class, display_name) in extractors.items():
            if test_extractor(extractor_class, filepath, display_name):
                success_count += 1
            print("-" * 50)
        
        print(f"\nโœ… {success_count}/{len(extractors)} extractors completed successfully")
        
    elif extractor_name in extractors:
        extractor_class, display_name = extractors[extractor_name]
        success = test_extractor(extractor_class, filepath, display_name)
        
        if success:
            print(f"\nโœ… {display_name} testing completed successfully")
        else:
            print(f"\nโŒ {display_name} testing failed")
            sys.exit(1)
    else:
        print(f"Unknown extractor: {extractor_name}")
        print("Available extractors:", ", ".join(extractors.keys()) + ", all")
        sys.exit(1)

if __name__ == "__main__":
    main()