├── Overrides.xcconfig
├── README.md
├── .gitignore
├── Sources
    └── Machismo
    │   ├── Machismo.swift
    │   ├── Parser.swift
    │   ├── Graphing
    │       ├── Edge.swift
    │       ├── Vertex.swift
    │       └── AdjacencyList.swift
    │   ├── Load Commands
    │       ├── SymTab.swift
    │       ├── RPath.swift
    │       ├── MinVersion.swift
    │       ├── LoadDylib.swift
    │       └── Segment.swift
    │   ├── Machismo.h
    │   ├── Extensions
    │       ├── Data+Extensions.swift
    │       └── String+Extensions.swift
    │   ├── SemanticVersion.swift
    │   ├── Header.swift
    │   ├── LoadCommand.swift
    │   ├── MachOGraph.swift
    │   ├── FatHeader.swift
    │   └── MachOFile.swift
├── Tests
    ├── LinuxMain.swift
    └── MachismoTests
    │   ├── XCTestManifests.swift
    │   └── MachismoTests.swift
├── Makefile
├── Package.swift
└── LICENSE


/Overrides.xcconfig:
--------------------------------------------------------------------------------
1 | MACOSX_DEPLOYMENT_TARGET = 10.13
2 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # Machismo
2 | 
3 | Parsing of Mach-O binaries.
4 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | .DS_Store
2 | /.build
3 | /Packages
4 | /*.xcodeproj
5 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Machismo.swift:
--------------------------------------------------------------------------------
1 | struct Machismo {
2 |     var text = "Hello, World!"
3 | }
4 | 


--------------------------------------------------------------------------------
/Tests/LinuxMain.swift:
--------------------------------------------------------------------------------
1 | import XCTest
2 | 
3 | import MachismoTests
4 | 
5 | var tests = [XCTestCaseEntry]()
6 | tests += MachismoTests.allTests()
7 | XCTMain(tests)


--------------------------------------------------------------------------------
/Tests/MachismoTests/XCTestManifests.swift:
--------------------------------------------------------------------------------
1 | import XCTest
2 | 
3 | #if !os(macOS)
4 | public func allTests() -> [XCTestCaseEntry] {
5 |     return [
6 |         testCase(MachismoTests.allTests),
7 |     ]
8 | }
9 | #endif


--------------------------------------------------------------------------------
/Sources/Machismo/Parser.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Parser.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-04.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO
11 | import MachO.fat
12 | 
13 | let byteSwappedOrder = NXByteOrder(rawValue: 0)
14 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Graphing/Edge.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Edge.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | public struct Edge<T>: Equatable where T: Hashable {
12 | 	public var from: Vertex<T>
13 | 	public var to: Vertex<T>
14 | 	public let weight: Double?
15 | }
16 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Graphing/Vertex.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Vertex.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | public struct Vertex<T: Hashable>: Hashable {
12 | 	var data: T
13 | }
14 | 
15 | extension Vertex: CustomStringConvertible {
16 | 	public var description: String {
17 | 		return "\(data)"
18 | 	}
19 | }
20 | 


--------------------------------------------------------------------------------
/Makefile:
--------------------------------------------------------------------------------
 1 | SWIFTC_FLAGS = -Xswiftc "-target" -Xswiftc "x86_64-apple-macosx10.13"
 2 | CONFIGURATION = debug
 3 | 
 4 | debug: build
 5 | 
 6 | build:
 7 | 	swift build --configuration $(CONFIGURATION) $(SWIFTC_FLAGS)
 8 | 	
 9 | test:
10 | 	swift test $(SWIFTC_FLAGS)
11 | 	
12 | xcode:
13 | 	swift package generate-xcodeproj --xcconfig-overrides=Overrides.xcconfig
14 | 	xed .
15 | 
16 | clean:
17 | 	swift package clean
18 | 	
19 | .PHONY: debug build test xcode clean
20 | 


--------------------------------------------------------------------------------
/Package.swift:
--------------------------------------------------------------------------------
 1 | // swift-tools-version:4.2
 2 | import PackageDescription
 3 | 
 4 | let package = Package(
 5 |     name: "Machismo",
 6 |     products: [
 7 |         .library(name: "Machismo", targets: ["Machismo"]),
 8 |     ],
 9 |     dependencies: [
10 |         // Dependencies declare other packages that this package depends on.
11 |         // .package(url: /* package url */, from: "1.0.0"),
12 |     ],
13 |     targets: [
14 |         .target(name: "Machismo", dependencies: []),
15 |         .testTarget(name: "MachismoTests", dependencies: ["Machismo"]),
16 |     ]
17 | )
18 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Load Commands/SymTab.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  SymTab.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-16.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO
11 | 
12 | extension LoadCommand {
13 | 	public struct SymTab: LoadCommandType {
14 | 		
15 | 		init(loadCommand: LoadCommand) {
16 | 			var command = loadCommand.data.extract(symtab_command.self, offset: loadCommand.offset)
17 | 			if loadCommand.byteSwapped {
18 | 				swap_symtab_command(&command, byteSwappedOrder)
19 | 			}
20 | 		}
21 | 	}
22 | }
23 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Machismo.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Machismo.h
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-04.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | #import <Cocoa/Cocoa.h>
10 | 
11 | //! Project version number for Machismo.
12 | FOUNDATION_EXPORT double MachismoVersionNumber;
13 | 
14 | //! Project version string for Machismo.
15 | FOUNDATION_EXPORT const unsigned char MachismoVersionString[];
16 | 
17 | // In this header, you should import all the public headers of your framework using statements like #import <Machismo/PublicHeader.h>
18 | 
19 | 
20 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Load Commands/RPath.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  RPath.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-12.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO
11 | 
12 | extension LoadCommand {
13 | 	public struct RPath: LoadCommandType {
14 | 		let path: String
15 | 		
16 | 		init(loadCommand: LoadCommand) {
17 | 			var command = loadCommand.data.extract(rpath_command.self, offset: loadCommand.offset)
18 | 			if loadCommand.byteSwapped {
19 | 				swap_rpath_command(&command, byteSwappedOrder)
20 | 			}
21 | 			self.path = String(data: loadCommand.data, offset: loadCommand.offset, commandSize: loadCommand.size, loadCommandString: command.path)
22 | 		}
23 | 	}
24 | }
25 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Extensions/Data+Extensions.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Data+Extensions.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | extension Data {
12 | 	subscript(_ arch: FatHeader.Architecture) -> Data {
13 | 		return Data(self[arch.offset..<(arch.offset + arch.size)])
14 | 	}
15 | 	
16 | 	func extract<T>(_ type: T.Type, offset: Int = 0) -> T {
17 | //		let ptr = UnsafeMutablePointer<T>.allocate(capacity: 1)
18 | 		let data = self[offset..<offset + MemoryLayout<T>.size]
19 | 		return data.withUnsafeBytes { (pointer: UnsafePointer<UInt8>) -> T in
20 | 			pointer.withMemoryRebound(to: T.self, capacity: 1, { (p) -> T in
21 | 				return p.pointee
22 | 			})
23 | 		}
24 | 	}
25 | }
26 | 


--------------------------------------------------------------------------------
/Sources/Machismo/SemanticVersion.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  SemanticVersion.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | public struct SemanticVersion {
12 | 	public var majorVersion: Int
13 | 	public var minorVersion: Int
14 | 	public var patchVersion: Int
15 | 	public init() {
16 | 		self.init(majorVersion: 0, minorVersion: 0, patchVersion: 0)
17 | 	}
18 | 	
19 | 	public init(majorVersion: Int, minorVersion: Int, patchVersion: Int) {
20 | 		self.majorVersion = majorVersion
21 | 		self.minorVersion = minorVersion
22 | 		self.patchVersion = patchVersion
23 | 	}
24 | 	
25 | 	init(_ value: UInt32) {
26 | 		self.init(
27 | 			majorVersion: Int(value >> 16),
28 | 			minorVersion: Int(value >> 8) & 0xFF,
29 | 			patchVersion: Int(value) & 0xFF
30 | 		)
31 | 	}
32 | }
33 | 


--------------------------------------------------------------------------------
/Tests/MachismoTests/MachismoTests.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  MachismoTests.swift
 3 | //  MachismoTests
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-04.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import XCTest
10 | @testable import Machismo
11 | 
12 | class MachismoTests: XCTestCase {
13 | 	let url = URL(fileURLWithPath: "/Applications/Xcode.app/Contents/MacOS/Xcode")
14 | //	func testRead() throws {
15 | //		let parser = try Parser(url: url)
16 | //		XCTAssertTrue(parser.is64Bit)
17 | //		XCTAssertFalse(parser.byteSwapped)
18 | //		parser.parseHeader()
19 | //		//parser.parseSegmentCommands()
20 | //	}
21 | 	
22 | 	func testFat() throws {
23 | 		//let machFile = try MachOFile(url: URL(fileURLWithPath: "/System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa"))
24 | 		let machFile = try MachOFile(url: URL(fileURLWithPath: "/Applications/Xcode.app/Contents/MacOS/Xcode"))
25 | 		print("hello")
26 | 	}
27 | 	
28 | 	func testGraph() throws {
29 | 		var graph = try MachOGraph(executableURL: url)
30 | 		print("hello")
31 | 		let dot = graph.graph.dotRepresentation(name: "\"\(url.path)\"")
32 | 		print(dot)
33 | 	}
34 | }
35 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Load Commands/MinVersion.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  MinVersion.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO
11 | 
12 | extension LoadCommand {
13 | 	public struct MinVersion: LoadCommandType {
14 | 		public enum Platform {
15 | 			case iOS
16 | 			case macOS
17 | 			case tvOS
18 | 			case watchOS
19 | 		}
20 | 		let platform: Platform
21 | 		let version: SemanticVersion
22 | 		let sdk: SemanticVersion
23 | 		init(loadCommand: LoadCommand) {
24 | 			var command = loadCommand.data.extract(version_min_command.self, offset: loadCommand.offset)
25 | 			if loadCommand.byteSwapped {
26 | 				swap_version_min_command(&command, byteSwappedOrder)
27 | 			}
28 | 			self.platform = {
29 | 				switch Int32(command.cmd) {
30 | 				case LC_VERSION_MIN_IPHONEOS:
31 | 					return .iOS
32 | 				case LC_VERSION_MIN_MACOSX:
33 | 					return .macOS
34 | 				case LC_VERSION_MIN_TVOS:
35 | 					return .tvOS
36 | 				case LC_VERSION_MIN_WATCHOS:
37 | 					return .watchOS
38 | 				default:
39 | 					fatalError("Unknown Platform")
40 | 				}
41 | 			}()
42 | 			self.version = SemanticVersion(command.version)
43 | 			self.sdk = SemanticVersion(command.sdk)
44 | 		}
45 | 	}
46 | }
47 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Header.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Header.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-05.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO
11 | 
12 | public struct Header {
13 | 	public let magic: UInt32 /* mach magic number identifier */
14 | 	public let cputype: cpu_type_t /* cpu specifier */
15 | 	//public let cpusubtype: cpu_subtype_t /* machine specifier */
16 | 	public let filetype: UInt32 /* type of file */
17 | 	//public let ncmds: UInt32 /* number of load commands */
18 | 	//public var sizeofcmds: UInt32 /* the size of all the load commands */
19 | 	//public var flags: UInt32 /* flags */
20 | 	
21 | 	public let loadCommandCount: UInt32
22 | 	public let loadCommandSize: UInt32
23 | 	
24 | 	public let size: Int
25 | 	
26 | 	public init(header: mach_header_64) {
27 | 		self.magic = header.magic
28 | 		self.cputype = header.cputype
29 | 		self.filetype = header.filetype
30 | 		self.loadCommandCount = header.ncmds
31 | 		self.loadCommandSize = header.sizeofcmds
32 | 		self.size = MemoryLayout.size(ofValue: header)
33 | 	}
34 | 	
35 | 	public init(header: mach_header) {
36 | 		self.magic = header.magic
37 | 		self.cputype = header.cputype
38 | 		self.filetype = header.filetype
39 | 		self.loadCommandCount = header.ncmds
40 | 		self.loadCommandSize = header.sizeofcmds
41 | 		self.size = MemoryLayout.size(ofValue: header)
42 | 	}
43 | }
44 | 


--------------------------------------------------------------------------------
/Sources/Machismo/LoadCommand.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  LoadCommand.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-06.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | protocol LoadCommandType {
12 | 	
13 | }
14 | 
15 | struct LoadCommand {
16 | 	let command: UInt32
17 | 	let size: Int
18 | 	
19 | 	let data: Data
20 | 	let offset: Int
21 | 	let byteSwapped: Bool
22 | 	
23 | 	init(data: Data, offset: Int, byteSwapped: Bool) {
24 | 		var loadCommand = data.extract(load_command.self, offset: offset)
25 | 		if byteSwapped {
26 | 			swap_load_command(&loadCommand, byteSwappedOrder)
27 | 		}
28 | 		self.command = loadCommand.cmd
29 | 		self.size = Int(loadCommand.cmdsize)
30 | 		self.data = data
31 | 		self.offset = offset
32 | 		self.byteSwapped = byteSwapped
33 | 	}
34 | 	
35 | 	func command(from data: Data, offset: Int, byteSwapped: Bool) -> LoadCommandType? {
36 | 		switch Int(command) {
37 | 		case Int(LC_SEGMENT), Int(LC_SEGMENT_64):
38 | 			return Segment(loadCommand: self)
39 | 		case Int(LC_RPATH):
40 | 			return RPath(loadCommand: self)
41 | 		case Int(LC_LOAD_DYLIB):
42 | 			return LoadDylib(loadCommand: self)
43 | 		case Int(LC_VERSION_MIN_IPHONEOS), Int(LC_VERSION_MIN_MACOSX), Int(LC_VERSION_MIN_TVOS), Int(LC_VERSION_MIN_WATCHOS):
44 | 			return MinVersion(loadCommand: self)
45 | 		case Int(LC_SYMTAB):
46 | 			return SymTab(loadCommand: self)
47 | 		default:
48 | 			return nil
49 | 		}
50 | 	}
51 | }
52 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Load Commands/LoadDylib.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  LoadDylib.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-12.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO
11 | 
12 | struct Dylib {
13 | //	public var name: lc_str /* library's path name */
14 | //	public var timestamp: UInt32 /* library's build time stamp */
15 | //	public var current_version: UInt32 /* library's current version number */
16 | //	public var compatibility_version: UInt32 /* library's compatibility vers number*/
17 | 	
18 | 	public let name: String
19 | 	public let timestamp: Date
20 | 	public let currentVersion: SemanticVersion
21 | 	public let compatibilityVersion: SemanticVersion
22 | 	
23 | 	init(loadCommand: LoadCommand, dylib: dylib) {
24 | 		self.name = String(loadCommand: loadCommand, string: dylib.name)
25 | 		self.timestamp = Date(timeIntervalSince1970: Double(dylib.timestamp))
26 | 		self.currentVersion = SemanticVersion(dylib.current_version)
27 | 		self.compatibilityVersion = SemanticVersion(dylib.compatibility_version)
28 | 	}
29 | }
30 | 
31 | extension LoadCommand {
32 | 	public struct LoadDylib: LoadCommandType {
33 | 		public let dylib: Dylib
34 | 		
35 | 		init(loadCommand: LoadCommand) {
36 | 			var command = loadCommand.data.extract(dylib_command.self, offset: loadCommand.offset)
37 | 			if loadCommand.byteSwapped {
38 | 				swap_dylib_command(&command, byteSwappedOrder)
39 | 			}
40 | 			self.dylib = Dylib(loadCommand: loadCommand, dylib: command.dylib)
41 | 		}
42 | 	}
43 | }
44 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Extensions/String+Extensions.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  String+Extensions.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | extension String {
12 | 	init(_ rawCString: (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)) {
13 | 		var rawCString = rawCString
14 | 		let rawCStringSize = MemoryLayout.size(ofValue: rawCString)
15 | 		let string = withUnsafePointer(to: &rawCString) { (pointer) -> String in
16 | 			return pointer.withMemoryRebound(to: UInt8.self, capacity: rawCStringSize, {
17 | 				return String(cString: $0)
18 | 			})
19 | 		}
20 | 		self.init(string)
21 | 	}
22 | 	
23 | 	/*
24 | 	* A variable length string in a load command is represented by an lc_str
25 | 	* union.  The strings are stored just after the load command structure and
26 | 	* the offset is from the start of the load command structure.  The size
27 | 	* of the string is reflected in the cmdsize field of the load command.
28 | 	* Once again any padded bytes to bring the cmdsize field to a multiple
29 | 	* of 4 bytes must be zero.
30 | 	*/
31 | 	init(data: Data, offset: Int, commandSize: Int, loadCommandString: lc_str) {
32 | 		let loadCommandStringOffset = Int(loadCommandString.offset)
33 | 		let stringOffset = offset + loadCommandStringOffset
34 | 		let length = commandSize - loadCommandStringOffset
35 | 		self = String(data: data[stringOffset..<(stringOffset + length)], encoding: .utf8)!.trimmingCharacters(in: .controlCharacters)
36 | 	}
37 | 	
38 | 	init(loadCommand: LoadCommand, string: lc_str) {
39 | 		let stringOffset = loadCommand.offset + Int(string.offset)
40 | 		self = String(data: loadCommand.data[stringOffset..<(loadCommand.offset + loadCommand.size)], encoding: .utf8)!.trimmingCharacters(in: .controlCharacters)
41 | 	}
42 | }
43 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Graphing/AdjacencyList.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AdjacencyList.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | final class AdjacencyListGraph<T: Hashable> {
12 | 	private var adjacencyList: [Vertex<T>: [Edge<T>]] = [:]
13 | 	
14 | 	public init() {
15 | 		
16 | 	}
17 | 	
18 | 	func addVertex(_ data: T) -> Vertex<T> {
19 | 		if let vertex = adjacencyList.first(where: { $0.key.data == data })?.key {
20 | 			return vertex
21 | 		}
22 | 		let vertex = Vertex(data: data)
23 | 		adjacencyList[vertex] = []
24 | 		return vertex
25 | 	}
26 | 	
27 | 	func addEdge(from: Vertex<T>, to: Vertex<T>, weight: Double? = nil) {
28 | 		let edge = Edge(from: from, to: to, weight: weight)
29 | 		adjacencyList[from, default: []].append(edge)
30 | 	}
31 | 	
32 | 	func dotRepresentation(name: String) -> String {
33 | 		var lines: [String] = []
34 | 		lines.append("digraph \(name) {")
35 | 		for (vertex, edges) in adjacencyList {
36 | 			lines.append("\t\"\(vertex)\";")
37 | 			for edge in edges {
38 | 				lines.append("\t\"\(edge.from)\" -> \"\(edge.to)\";")
39 | 			}
40 | 		}
41 | 		lines.append("}")
42 | 		return lines.joined(separator: "\n")
43 | 	}
44 | }
45 | 
46 | extension AdjacencyListGraph {
47 | //	var description: String {
48 | //		var rows: [String] = []
49 | //		for edgeList in adjacencyList {
50 | //			guard let edges = edgeList.edges else {
51 | //				continue
52 | //			}
53 | //
54 | //			var row = [String]()
55 | //			for edge in edges {
56 | //				var value = "\(edge.to.data)"
57 | //				if edge.weight != nil {
58 | //					value = "(\(value): \(edge.weight!))"
59 | //				}
60 | //				row.append(value)
61 | //			}
62 | //			rows.append("\(edgeList.vertex.data) -> [\(row.joined(separator: ", "))]")
63 | //		}
64 | //
65 | //		return rows.joined(separator: "\n")
66 | //	}
67 | }
68 | 


--------------------------------------------------------------------------------
/Sources/Machismo/MachOGraph.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  MachOGraph.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | class MachOGraph {
12 | 	var binaries: [URL: MachOFile] = [:]
13 | 	let executableURL: URL
14 | 	
15 | 	let graph = AdjacencyListGraph<URL>()
16 | 	
17 | 	init(executableURL: URL) throws {
18 | 		self.executableURL = executableURL
19 | 		
20 | 		try load(url: executableURL)
21 | 	}
22 | 	
23 | 	func load(url: URL) throws {
24 | 		guard binaries[url] == nil else { return }
25 | 		let binary = try MachOFile(url: url)
26 | 		binaries[url] = binary
27 | 		
28 | 		let fromVertex = graph.addVertex(url)
29 | 		
30 | 		let loaderExecutablePath = "@executable_path/"
31 | 		let rpaths: [URL] = binary.rpaths.compactMap {
32 | 			if $0.hasPrefix(loaderExecutablePath) {
33 | 				let path = $0.dropFirst(loaderExecutablePath.count)
34 | 				return URL(fileURLWithPath: String(path), relativeTo: executableURL)
35 | 			}
36 | 			return nil
37 | 		}
38 | 		
39 | 		
40 | 		let dylibURLs: [URL] = binary.dylibs.compactMap {
41 | 			return path(for: $0, rpaths: rpaths)
42 | 		}
43 | 		
44 | 		try dylibURLs.forEach {
45 | 			let toVertex = graph.addVertex($0)
46 | 			graph.addEdge(from: fromVertex, to: toVertex)
47 | 			try load(url: $0)
48 | 		}
49 | 	}
50 | 	
51 | 	private func path(for dylib: Dylib, rpaths: [URL]) -> URL? {
52 | 		let loaderRPath = "@rpath/"
53 | 		if dylib.name.hasPrefix(loaderRPath) {
54 | 			for rpath in rpaths {
55 | 				let path = dylib.name.dropFirst(loaderRPath.count)
56 | 				let potentialURL = URL(fileURLWithPath: String(path), relativeTo: rpath)
57 | 				if let reachable = try? potentialURL.checkResourceIsReachable(), reachable {
58 | 					return potentialURL
59 | 				}
60 | 			}
61 | 			return nil
62 | 		} else {
63 | 			return URL(fileURLWithPath: dylib.name)
64 | 		}
65 | 	}
66 | }
67 | 


--------------------------------------------------------------------------------
/Sources/Machismo/Load Commands/Segment.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Segment.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-06.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO
11 | 
12 | extension LoadCommand {
13 | 	public struct Segment: LoadCommandType {
14 | 		
15 | 		//	public var cmd: UInt32 /* for 64-bit architectures */ /* LC_SEGMENT_64 */
16 | 		//	public var cmdsize: UInt32 /* includes sizeof section_64 structs */
17 | 		//	public var segname: (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8) /* segment name */
18 | 		//	public var vmaddr: UInt64 /* memory address of this segment */
19 | 		//	public var vmsize: UInt64 /* memory size of this segment */
20 | 		//	public var fileoff: UInt64 /* file offset of this segment */
21 | 		//	public var filesize: UInt64 /* amount to map from the file */
22 | 		//	public var maxprot: vm_prot_t /* maximum VM protection */
23 | 		//	public var initprot: vm_prot_t /* initial VM protection */
24 | 		//	public var nsects: UInt32 /* number of sections in segment */
25 | 		//	public var flags: UInt32 /* flags */
26 | 		
27 | 		public let name: String
28 | 		
29 | 		init(command: segment_command_64) {
30 | 			self.name = String(command.segname)
31 | 		}
32 | 		
33 | 		init(command: segment_command) {
34 | 			self.name = String(command.segname)
35 | 		}
36 | 		
37 | 		init(loadCommand: LoadCommand) {
38 | 			if loadCommand.command == LC_SEGMENT_64 {
39 | 				var segmentCommand = loadCommand.data.extract(segment_command_64.self, offset: loadCommand.offset)
40 | 				if loadCommand.byteSwapped {
41 | 					swap_segment_command_64(&segmentCommand, byteSwappedOrder)
42 | 				}
43 | 				self.init(command: segmentCommand)
44 | 			} else {
45 | 				var segmentCommand = loadCommand.data.extract(segment_command.self, offset: loadCommand.offset)
46 | 				if loadCommand.byteSwapped {
47 | 					swap_segment_command(&segmentCommand, byteSwappedOrder)
48 | 				}
49 | 				self.init(command: segmentCommand)
50 | 			}
51 | 		}
52 | 	}
53 | }
54 | 


--------------------------------------------------------------------------------
/Sources/Machismo/FatHeader.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  FatHeader.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-13.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import MachO.fat
11 | 
12 | public struct FatHeader {
13 | 	public struct Architecture {
14 | 		public var cputype: cpu_type_t /* cpu specifier (int) */
15 | 		public var cpusubtype: cpu_subtype_t /* machine specifier (int) */
16 | 		public var offset: UInt64 /* file offset to this object file */
17 | 		public var size: UInt64 /* size of this object file */
18 | 		public var align: UInt32 /* alignment as a power of 2 */
19 | 		
20 | 		init(arch: fat_arch_64) {
21 | 			self.cputype = arch.cputype
22 | 			self.cpusubtype = arch.cpusubtype
23 | 			self.offset = arch.offset
24 | 			self.size = arch.size
25 | 			self.align = arch.align
26 | 		}
27 | 		
28 | 		init(arch: fat_arch) {
29 | 			self.cputype = arch.cputype
30 | 			self.cpusubtype = arch.cpusubtype
31 | 			self.offset = UInt64(arch.offset)
32 | 			self.size = UInt64(arch.size)
33 | 			self.align = arch.align
34 | 		}
35 | 	}
36 | 	
37 | 	public let architectures: [Architecture]
38 | 	init?(data: Data) {
39 | 		let magic = data.extract(UInt32.self)
40 | 		guard [FAT_MAGIC, FAT_MAGIC_64, FAT_CIGAM, FAT_CIGAM_64].contains(magic) else { return nil }
41 | 		
42 | 		var header = data.extract(fat_header.self)
43 | 		let is64Bit = [FAT_MAGIC_64, FAT_CIGAM_64].contains(magic)
44 | 		let byteSwapped = [FAT_CIGAM, FAT_CIGAM_64].contains(magic)
45 | 		if [FAT_CIGAM, FAT_CIGAM_64].contains(magic) {
46 | 			swap_fat_header(&header, byteSwappedOrder)
47 | 		}
48 | 		var offset = MemoryLayout.size(ofValue: header)
49 | 		var architectures: [Architecture] = []
50 | 		if is64Bit {
51 | 			for _ in 0..<header.nfat_arch {
52 | 				var fatArch = data.extract(fat_arch_64.self, offset: offset)
53 | 				offset += MemoryLayout.size(ofValue: fatArch)
54 | 				if byteSwapped {
55 | 					swap_fat_arch_64(&fatArch, 1, byteSwappedOrder)
56 | 				}
57 | 				architectures.append(Architecture(arch: fatArch))
58 | 			}
59 | 		} else {
60 | 			for _ in 0..<header.nfat_arch {
61 | 				var fatArch = data.extract(fat_arch.self, offset: offset)
62 | 				offset += MemoryLayout.size(ofValue: fatArch)
63 | 				if byteSwapped {
64 | 					swap_fat_arch(&fatArch, 1, byteSwappedOrder)
65 | 				}
66 | 				architectures.append(Architecture(arch: fatArch))
67 | 			}
68 | 		}
69 | 		
70 | 		self.architectures = architectures
71 | 	}
72 | }
73 | 


--------------------------------------------------------------------------------
/Sources/Machismo/MachOFile.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  MachO.swift
 3 | //  Machismo
 4 | //
 5 | //  Created by Geoffrey Foster on 2018-05-12.
 6 | //  Copyright © 2018 g-Off.net. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | 
11 | public struct MachOFile {
12 | 	public enum Architecture {
13 | 		case i386
14 | 		case x86_64
15 | 	}
16 | 	
17 | 	let url: URL
18 | 	let header: Header
19 | 	let commands: [LoadCommandType]
20 | 	
21 | 	public init(url: URL) throws {
22 | 		let data = try Data(contentsOf: url)
23 | 		try self.init(url: url, data: data)
24 | 	}
25 | 	
26 | 	public init(url: URL, data: Data) throws {
27 | 		self.url = url
28 | 		
29 | 		let dataSlice: Data
30 | 		if let fatHeader = FatHeader(data: data) {
31 | 			let arch = fatHeader.architectures.first { $0.cputype == CPU_TYPE_X86_64 }!
32 | 			dataSlice = data[arch]
33 | 		} else {
34 | 			dataSlice = data
35 | 		}
36 | 		
37 | 		let attributes = MachOFile.machAttributes(from: dataSlice)
38 | 		let header = MachOFile.header(from: dataSlice, attributes: attributes)
39 | 		
40 | 		self.header = header
41 | 		self.commands = MachOFile.segmentCommands(from: dataSlice, header: header, attributes: attributes)
42 | 	}
43 | 	
44 | 	private struct MachAttributes {
45 | 		let is64Bit: Bool
46 | 		let isByteSwapped: Bool
47 | 	}
48 | 	private static func machAttributes(from data: Data) -> MachAttributes {
49 | 		let magic = data.extract(UInt32.self)
50 | 		let is64Bit = magic == MH_MAGIC_64 || magic == MH_CIGAM_64
51 | 		let isByteSwapped = magic == MH_CIGAM || magic == MH_CIGAM_64
52 | 		return MachAttributes(is64Bit: is64Bit, isByteSwapped: isByteSwapped)
53 | 	}
54 | 	
55 | 	private static func header(from data: Data, attributes: MachAttributes) -> Header {
56 | 		if attributes.is64Bit {
57 | 			let header = data.extract(mach_header_64.self)
58 | 			return Header(header: header)
59 | 		} else {
60 | 			let header = data.extract(mach_header.self)
61 | 			return Header(header: header)
62 | 		}
63 | 	}
64 | 	
65 | 	private static func segmentCommands(from data: Data, header: Header, attributes: MachAttributes) -> [LoadCommandType] {
66 | 		var segmentCommands: [LoadCommandType] = []
67 | 		var offset = header.size
68 | 		for _ in 0..<header.loadCommandCount {
69 | 			let loadCommand = LoadCommand(data: data, offset: offset, byteSwapped: attributes.isByteSwapped)
70 | 			if let command = loadCommand.command(from: data, offset: offset, byteSwapped: attributes.isByteSwapped) {
71 | 				segmentCommands.append(command)
72 | 			}
73 | 			offset += Int(loadCommand.size)
74 | 		}
75 | 		return segmentCommands
76 | 	}
77 | 	
78 | 	var rpaths: [String] {
79 | 		return commands.compactMap { $0 as? LoadCommand.RPath }.map { $0.path }
80 | 	}
81 | 	
82 | 	var dylibs: [Dylib] {
83 | 		return commands.compactMap { $0 as? LoadCommand.LoadDylib }.map { $0.dylib }
84 | 	}
85 | }
86 | 


--------------------------------------------------------------------------------
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