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sm-mobile-20261016T185235Z-8e93ecc1b59a Přidáno: 16. 10. 2026 21:29 · Sestaveno: 16. 10. 2026 20:52

AppDelegate.swift Přidáno: Datum není evidováno 13,0 KB · 332 řádků

Kód Stáhnout soubor

1import Flutter

2import QuickLook

3import UIKit

4import UniformTypeIdentifiers

6@main

7@objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {

8 override func application(

9 _ application: UIApplication,

10 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?

11 ) -> Bool {

12 return super.application(application, didFinishLaunchingWithOptions: launchOptions)

13 }

15 func didInitializeImplicitFlutterEngine(_ engineBridge: FlutterImplicitEngineBridge) {

16 GeneratedPluginRegistrant.register(with: engineBridge.pluginRegistry)

17 if let registrar = engineBridge.pluginRegistry.registrar(forPlugin: "SMDocuments") {

18 Documents.shared.attach(registrar.messenger())

19 }

20 }

21}

23/// Files on the device through the system document picker (Files app and

24/// file providers). Access exists only for what the user picks: documents

25/// are kept as security-scoped bookmarks and read/written with

26/// NSFileCoordinator, inside the iOS sandbox.

27final class Documents: NSObject, UIDocumentPickerDelegate, QLPreviewControllerDataSource,

28 QLPreviewControllerDelegate

29{

30 static let shared = Documents()

31 private var channel: FlutterMethodChannel?

32 private var pending: (([URL]?) -> Void)?

33 private var incoming: [[String: Any?]] = []

34 private var previewURL: URL?

35 private var previewResult: FlutterResult?

36 private let queue = DispatchQueue(label: "eu.chj.sm_mobile.documents")

38 func attach(_ messenger: FlutterBinaryMessenger) {

39 let channel = FlutterMethodChannel(name: "eu.chj.sm_mobile/documents", binaryMessenger: messenger)

40 channel.setMethodCallHandler { [weak self] call, result in self?.handle(call, result) }

41 self.channel = channel

42 }

44 // MARK: identifiers

46 /// "b:<bookmark>" for a picked item; "b:<folder bookmark>\n<relative path>"

47 /// for an item inside a picked folder.

48 private func id(bookmarkOf url: URL) throws -> String {

49 let scoped = url.startAccessingSecurityScopedResource()

50 defer { if scoped { url.stopAccessingSecurityScopedResource() } }

51 let data = try url.bookmarkData(options: [], includingResourceValuesForKeys: nil, relativeTo: nil)

52 return "b:" + data.base64EncodedString()

53 }

55 private func resolve(_ id: String) throws -> (url: URL, scope: URL) {

56 let parts = id.split(separator: "\n", maxSplits: 1).map(String.init)

57 guard let first = parts.first, first.hasPrefix("b:"),

58 let data = Data(base64Encoded: String(first.dropFirst(2)))

59 else { throw DocError.code("notFound") }

60 var stale = false

61 let scope: URL

62 do {

63 scope = try URL(resolvingBookmarkData: data, options: [], relativeTo: nil, bookmarkDataIsStale: &stale)

64 } catch {

65 throw DocError.code("stale")

66 }

67 if parts.count == 2 {

68 let relative = parts[1]

69 if relative.split(separator: "/").contains("..") { throw DocError.code("denied") }

70 return (scope.appendingPathComponent(relative), scope)

71 }

72 return (scope, scope)

73 }

75 enum DocError: Error { case code(String) }

77 private func access<T>(_ id: String, _ work: (URL) throws -> T) throws -> T {

78 let (url, scope) = try resolve(id)

79 let scoped = scope.startAccessingSecurityScopedResource()

80 defer { if scoped { scope.stopAccessingSecurityScopedResource() } }

81 return try work(url)

82 }

84 private func describe(_ url: URL, id: String, location: String? = nil) -> [String: Any?] {

85 let keys: Set<URLResourceKey> = [

86 .nameKey, .fileSizeKey, .contentModificationDateKey, .isDirectoryKey, .isWritableKey,

87 .contentTypeKey,

88 ]

89 let v = try? url.resourceValues(forKeys: keys)

90 let directory = v?.isDirectory ?? false

91 return [

92 "id": id,

93 "name": v?.name ?? url.lastPathComponent,

94 "size": v?.fileSize,

95 "modified": v?.contentModificationDate.map { Int($0.timeIntervalSince1970 * 1000) },

96 "directory": directory,

97 "writable": !directory && (v?.isWritable ?? FileManager.default.isWritableFile(atPath: url.path)),

98 "mime": v?.contentType?.preferredMIMEType,

99 "location": location ?? url.deletingLastPathComponent().lastPathComponent,

100 ]

101 }

102

103 private func coordinatedRead(_ url: URL) throws -> Data {

104 var error: NSError?

105 var result: Result<Data, Error> = .failure(DocError.code("io"))

106 NSFileCoordinator().coordinate(readingItemAt: url, options: [], error: &error) { u in

107 result = Result { try Data(contentsOf: u) }

108 }

109 if let error { throw error }

110 return try result.get()

111 }

112

113 private func coordinatedWrite(_ url: URL, _ data: Data) throws {

114 var error: NSError?

115 var result: Result<Void, Error> = .success(())

116 NSFileCoordinator().coordinate(writingItemAt: url, options: .forReplacing, error: &error) { u in

117 result = Result { try data.write(to: u, options: .atomic) }

118 }

119 if let error { throw error }

120 try result.get()

121 }

122

123 // MARK: presentation

124

125 private var top: UIViewController? {

126 let scenes = UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }

127 var vc = scenes.flatMap { $0.windows }.first { $0.isKeyWindow }?.rootViewController

128 while let presented = vc?.presentedViewController { vc = presented }

129 return vc

130 }

131

132 private func present(_ picker: UIDocumentPickerViewController, _ done: @escaping ([URL]?) -> Void) -> Bool {

133 guard pending == nil, let top else { return false }

134 pending = done

135 picker.delegate = self

136 top.present(picker, animated: true)

137 return true

138 }

139

140 func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {

141 let done = pending

142 pending = nil

143 done?(urls)

144 }

145

146 func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {

147 let done = pending

148 pending = nil

149 done?(nil)

150 }

151

152 func numberOfPreviewItems(in controller: QLPreviewController) -> Int { previewURL == nil ? 0 : 1 }

153 func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {

154 previewURL! as QLPreviewItem

155 }

156 func previewControllerDidDismiss(_ controller: QLPreviewController) {

157 previewResult?(true)

158 previewResult = nil

159 previewURL = nil

160 }

161

162 // MARK: calls

163

164 private func fail(_ result: @escaping FlutterResult, _ error: Error) {

165 let code: String

166 switch error {

167 case DocError.code(let c): code = c

168 case let e as NSError where e.domain == NSCocoaErrorDomain:

169 switch e.code {

170 case NSFileWriteNoPermissionError, NSFileReadNoPermissionError: code = "denied"

171 case NSFileWriteOutOfSpaceError: code = "noSpace"

172 case NSFileNoSuchFileError, NSFileReadNoSuchFileError: code = "notFound"

173 case NSFileWriteVolumeReadOnlyError: code = "readOnly"

174 default: code = "io"

175 }

176 default: code = "io"

177 }

178 DispatchQueue.main.async { result(FlutterError(code: code, message: "\(error)", details: nil)) }

179 }

180

181 private func background(_ result: @escaping FlutterResult, _ work: @escaping () throws -> Any?) {

182 queue.async {

183 do {

184 let value = try work()

185 DispatchQueue.main.async { result(value) }

186 } catch {

187 self.fail(result, error)

188 }

189 }

190 }

191

192 private func handle(_ call: FlutterMethodCall, _ result: @escaping FlutterResult) {

193 let args = call.arguments as? [String: Any] ?? [:]

194 switch call.method {

195 case "pick":

196 let picker = UIDocumentPickerViewController(forOpeningContentTypes: [.item], asCopy: false)

197 picker.allowsMultipleSelection = args["multiple"] as? Bool ?? false

198 let shown = present(picker) { urls in

199 guard let urls else { return result([]) }

200 self.background(result) {

201 try urls.map { url in

202 let id = try self.id(bookmarkOf: url)

203 return try self.access(id) { self.describe($0, id: id) }

204 }

205 }

206 }

207 if !shown { result(FlutterError(code: "busy", message: nil, details: nil)) }

208 case "pickFolder":

209 let picker = UIDocumentPickerViewController(forOpeningContentTypes: [.folder], asCopy: false)

210 let shown = present(picker) { urls in

211 guard let url = urls?.first else { return result(nil) }

212 self.background(result) {

213 let id = try self.id(bookmarkOf: url)

214 return try self.access(id) { self.describe($0, id: id) }

215 }

216 }

217 if !shown { result(FlutterError(code: "busy", message: nil, details: nil)) }

218 case "list":

219 let folder = args["id"] as! String

220 background(result) {

221 try self.access(folder) { url in

222 let (_, scope) = try self.resolve(folder)

223 let base = folder.split(separator: "\n", maxSplits: 1).first.map(String.init)!

224 let items = try FileManager.default.contentsOfDirectory(

225 at: url, includingPropertiesForKeys: nil, options: [.skipsHiddenFiles])

226 return items.map { item -> [String: Any?] in

227 let relative = String(item.standardizedFileURL.path.dropFirst(scope.standardizedFileURL.path.count))

228 .trimmingCharacters(in: CharacterSet(charactersIn: "/"))

229 return self.describe(item, id: base + "\n" + relative, location: url.lastPathComponent)

230 }

231 }

232 }

233 case "stat":

234 let id = args["id"] as! String

235 background(result) { try self.access(id) { self.describe($0, id: id) } }

236 case "read":

237 let id = args["id"] as! String

238 background(result) { try self.access(id) { FlutterStandardTypedData(bytes: try self.coordinatedRead($0)) } }

239 case "write":

240 let id = args["id"] as! String

241 let bytes = (args["bytes"] as! FlutterStandardTypedData).data

242 background(result) {

243 try self.access(id) { url in

244 if !FileManager.default.isWritableFile(atPath: url.path) { throw DocError.code("readOnly") }

245 try self.coordinatedWrite(url, bytes)

246 return self.describe(url, id: id)

247 }

248 }

249 case "create":

250 let folder = args["folder"] as! String

251 let name = args["name"] as! String

252 let bytes = (args["bytes"] as! FlutterStandardTypedData).data

253 background(result) {

254 if name.contains("/") || name == ".." { throw DocError.code("denied") }

255 return try self.access(folder) { url in

256 let target = url.appendingPathComponent(name)

257 if FileManager.default.fileExists(atPath: target.path) { throw DocError.code("exists") }

258 try self.coordinatedWrite(target, bytes)

259 let base = folder.split(separator: "\n", maxSplits: 1).map(String.init)

260 let relative = (base.count == 2 ? base[1] + "/" : "") + name

261 return self.describe(target, id: base[0] + "\n" + relative)

262 }

263 }

264 case "saveAs":

265 let name = args["name"] as! String

266 let bytes = (args["bytes"] as! FlutterStandardTypedData).data

267 let dir = FileManager.default.temporaryDirectory.appendingPathComponent("sm-transfer-export-\(UUID().uuidString)")

268 do {

269 try FileManager.default.createDirectory(at: dir, withIntermediateDirectories: true)

270 let temp = dir.appendingPathComponent((name as NSString).lastPathComponent)

271 try bytes.write(to: temp, options: .atomic)

272 let picker = UIDocumentPickerViewController(forExporting: [temp], asCopy: true)

273 let shown = present(picker) { urls in

274 try? FileManager.default.removeItem(at: dir)

275 guard let url = urls?.first else { return result(nil) }

276 self.background(result) {

277 if let id = try? self.id(bookmarkOf: url) {

278 return try self.access(id) { self.describe($0, id: id) }

279 }

280 // Saved, but iOS gave no lasting access to the new file.

281 var info = self.describe(url, id: "")

282 info["writable"] = false

283 return info

284 }

285 }

286 if !shown {

287 try? FileManager.default.removeItem(at: dir)

288 result(FlutterError(code: "busy", message: nil, details: nil))

289 }

290 } catch {

291 fail(result, error)

292 }

293 case "preview":

294 let url = URL(fileURLWithPath: args["path"] as! String)

295 guard url.standardizedFileURL.path.hasPrefix(FileManager.default.temporaryDirectory.standardizedFileURL.path),

296 QLPreviewController.canPreview(url as QLPreviewItem), let top

297 else { return result(false) }

298 previewURL = url

299 previewResult = result

300 let ql = QLPreviewController()

301 ql.dataSource = self

302 ql.delegate = self

303 top.present(ql, animated: true)

304 case "takeIncoming":

305 result(incoming)

306 incoming.removeAll()

307 case "forget":

308 result(nil)

309 default:

310 result(FlutterMethodNotImplemented)

311 }

312 }

313

314 /// Files opened in SM Mobile from other apps ("Open in", Files).

315 func receive(_ urls: [URL]) {

316 queue.async {

317 let docs: [[String: Any?]] = urls.compactMap { url in

318 guard let id = try? self.id(bookmarkOf: url) else { return nil }

319 return try? self.access(id) { self.describe($0, id: id) }

320 }

321 DispatchQueue.main.async {

322 guard !docs.isEmpty else { return }

323 if let channel = self.channel {

324 channel.invokeMethod("incoming", arguments: self.incoming + docs)

325 self.incoming.removeAll()

326 } else {

327 self.incoming.append(contentsOf: docs)

328 }

329 }

330 }

331 }

332}

333

SHA-256

6b9c72191ccf5175b2993f8c283bc8102e47b7a20a81c8d7fea2cf3f2b0978ce

CH-J Proprietary Software License 1.14 · Zdroje jsou zveřejněny pod CH-J Proprietary Software License 1.14. Jejich dostupnost nemění licenční podmínky ani neposkytuje další oprávnění.

SHA-256 archivu

46e427a43e87af091004f36145590bda8fe90086dfb0f631afeb5029fb0b5655