initial commit

ios_client/EncryptedChat/Crypto/CryptoErrors.swift

@@ -0,0 +1,95 @@
+import Foundation
+
+enum CryptoError: Error, LocalizedError {
+    case invalidBase64
+    case invalidHex
+    case invalidKeyData(String)
+    case invalidSignature
+    case signatureVerificationFailed
+    case encryptionFailed(String)
+    case decryptionFailed(String)
+    case invalidECP1Format
+    case pbkdf2Failed
+    case rsaKeyGenerationFailed
+    case rsaOperationFailed(String)
+    case x3dhFailed(String)
+    case ratchetError(String)
+    case senderKeyError(String)
+    case maxSkipExceeded
+    case duplicateMessage
+    case invalidHeader(String)
+    case stateImportFailed(String)
+    case keyConversionFailed(String)
+
+    var errorDescription: String? {
+        switch self {
+        case .invalidBase64: return "Invalid base64 encoding"
+        case .invalidHex: return "Invalid hex encoding"
+        case .invalidKeyData(let msg): return "Invalid key data: \(msg)"
+        case .invalidSignature: return "Invalid signature format"
+        case .signatureVerificationFailed: return "Signature verification failed"
+        case .encryptionFailed(let msg): return "Encryption failed: \(msg)"
+        case .decryptionFailed(let msg): return "Decryption failed: \(msg)"
+        case .invalidECP1Format: return "Invalid ECP1 key format"
+        case .pbkdf2Failed: return "PBKDF2 key derivation failed"
+        case .rsaKeyGenerationFailed: return "RSA key generation failed"
+        case .rsaOperationFailed(let msg): return "RSA operation failed: \(msg)"
+        case .x3dhFailed(let msg): return "X3DH failed: \(msg)"
+        case .ratchetError(let msg): return "Ratchet error: \(msg)"
+        case .senderKeyError(let msg): return "Sender key error: \(msg)"
+        case .maxSkipExceeded: return "Maximum message skip exceeded"
+        case .duplicateMessage: return "Duplicate message detected"
+        case .invalidHeader(let msg): return "Invalid header: \(msg)"
+        case .stateImportFailed(let msg): return "State import failed: \(msg)"
+        case .keyConversionFailed(let msg): return "Key conversion failed: \(msg)"
+        }
+    }
+}
+
+enum NetworkError: Error, LocalizedError {
+    case notConnected
+    case connectionFailed(String)
+    case timeout
+    case serverError(String)
+    case protocolError(String)
+    case messageTooLarge
+    case invalidResponse(String)
+    case authenticationFailed(String)
+    case alreadyConnected
+
+    var errorDescription: String? {
+        switch self {
+        case .notConnected: return "Not connected to server"
+        case .connectionFailed(let msg): return "Connection failed: \(msg)"
+        case .timeout: return "Request timed out"
+        case .serverError(let msg): return "Server error: \(msg)"
+        case .protocolError(let msg): return "Protocol error: \(msg)"
+        case .messageTooLarge: return "Message exceeds maximum size"
+        case .invalidResponse(let msg): return "Invalid response: \(msg)"
+        case .authenticationFailed(let msg): return "Authentication failed: \(msg)"
+        case .alreadyConnected: return "Already connected"
+        }
+    }
+}
+
+enum ChatError: Error, LocalizedError {
+    case notLoggedIn
+    case conversationNotFound
+    case membershipRequired
+    case permissionDenied(String)
+    case operationFailed(String)
+    case fileError(String)
+    case invalidData(String)
+
+    var errorDescription: String? {
+        switch self {
+        case .notLoggedIn: return "Not logged in"
+        case .conversationNotFound: return "Conversation not found"
+        case .membershipRequired: return "Must be a member of this conversation"
+        case .permissionDenied(let msg): return "Permission denied: \(msg)"
+        case .operationFailed(let msg): return "Operation failed: \(msg)"
+        case .fileError(let msg): return "File error: \(msg)"
+        case .invalidData(let msg): return "Invalid data: \(msg)"
+        }
+    }
+}