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impl: jump logic

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Fixes #356
This commit is contained in:
lollipopkit🏳️‍⚧️
2026-01-15 09:42:34 +08:00
parent c51cf62015
commit 8be9b9b10b
15 changed files with 411 additions and 202 deletions
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178
lib/core/utils/server.dart
View File

@@ -90,6 +90,8 @@ Future<SSHClient> _genClientInternal(
void Function(String storageKey, String fingerprintHex)? onHostKeyAccepted,
Future<bool> Function(HostKeyPromptInfo info)? onHostKeyPrompt,
required Set<String> visited,
SSHSocket? socketOverride,
bool followJumpConfig = true,
}) async {
final identifier = _hostIdentifier(spi);
if (!visited.add(identifier)) {
@@ -105,46 +107,116 @@ Future<SSHClient> _genClientInternal(
String? alterUser;
final socket = await () async {
// Proxy
final jumpId = spi.jumpId;
Spi? jumpSpi_;
String? jumpPrivateKey;
if (socketOverride != null) return socketOverride;
if (jumpId != null) {
if (jumpChain != null) {
final idx = jumpChain.indexWhere((e) => e.id == jumpId || e.oldId == jumpId);
if (idx == -1) {
throw SSHErr(type: SSHErrType.connect, message: 'Jump server not found in provided chain: $jumpId');
}
jumpSpi_ = jumpChain[idx];
jumpPrivateKey = jumpPrivateKeys != null && idx < jumpPrivateKeys.length ? jumpPrivateKeys[idx] : null;
if (followJumpConfig) {
final hopIds = spi.jumpChainIds;
if (jumpSpi_.keyId != null && jumpPrivateKey == null) {
throw SSHErr(
type: SSHErrType.noPrivateKey,
message: l10n.privateKeyNotFoundFmt(jumpSpi_.keyId ?? ''),
);
// Explicit hop list on this node
if (hopIds != null && hopIds.isNotEmpty) {
SSHClient? currentClient;
for (var i = 0; i < hopIds.length; i++) {
final hopId = hopIds[i];
final hopSpi = jumpChain?.firstWhereOrNull((e) => e.id == hopId || e.oldId == hopId) ??
Stores.server.box.get(hopId);
if (hopSpi == null) {
throw SSHErr(type: SSHErrType.connect, message: 'Jump server not found: $hopId');
}
if (currentClient == null) {
// First hop: connect directly
final hopKeyId = hopSpi.keyId;
final hopPrivateKey = hopKeyId == null
? null
: (jumpPrivateKeys != null && i < jumpPrivateKeys.length ? jumpPrivateKeys[i] : null) ??
getPrivateKey(hopKeyId);
final hopSocket = await SSHSocket.connect(hopSpi.ip, hopSpi.port, timeout: timeout);
currentClient = await _genClientInternal(
hopSpi,
privateKey: hopPrivateKey,
jumpChain: jumpChain,
jumpPrivateKeys: jumpPrivateKeys,
timeout: timeout,
onKeyboardInteractive: onKeyboardInteractive,
knownHostFingerprints: hostKeyCache,
onHostKeyAccepted: hostKeyPersist,
onHostKeyPrompt: hostKeyPrompt,
visited: visited,
socketOverride: hopSocket,
);
} else {
final forwarded = await currentClient.forwardLocal(hopSpi.ip, hopSpi.port);
final hopKeyId = hopSpi.keyId;
final hopPrivateKey = hopKeyId == null
? null
: (jumpPrivateKeys != null && i < jumpPrivateKeys.length ? jumpPrivateKeys[i] : null) ??
getPrivateKey(hopKeyId);
currentClient = await _genClientInternal(
hopSpi,
privateKey: hopPrivateKey,
jumpChain: jumpChain,
jumpPrivateKeys: jumpPrivateKeys,
timeout: timeout,
onKeyboardInteractive: onKeyboardInteractive,
knownHostFingerprints: hostKeyCache,
onHostKeyAccepted: hostKeyPersist,
onHostKeyPrompt: hostKeyPrompt,
visited: visited,
socketOverride: forwarded,
);
}
}
if (currentClient != null) {
return await currentClient.forwardLocal(spi.ip, spi.port);
}
} else {
jumpSpi_ = Stores.server.box.get(jumpId);
}
}
if (jumpSpi_ != null) {
final jumpClient = await _genClientInternal(
jumpSpi_,
privateKey: jumpPrivateKey,
jumpChain: jumpChain,
jumpPrivateKeys: jumpPrivateKeys,
timeout: timeout,
onKeyboardInteractive: onKeyboardInteractive,
knownHostFingerprints: hostKeyCache,
onHostKeyAccepted: hostKeyPersist,
onHostKeyPrompt: hostKeyPrompt,
visited: visited,
);
// Legacy single hop
final hopId = spi.jumpId;
Spi? hopSpi;
String? hopPrivateKey;
return await jumpClient.forwardLocal(spi.ip, spi.port);
if (hopId != null) {
if (jumpChain != null) {
final idx = jumpChain.indexWhere((e) => e.id == hopId || e.oldId == hopId);
if (idx == -1) {
throw SSHErr(type: SSHErrType.connect, message: 'Jump server not found in provided chain: $hopId');
}
hopSpi = jumpChain[idx];
hopPrivateKey = jumpPrivateKeys != null && idx < jumpPrivateKeys.length ? jumpPrivateKeys[idx] : null;
if (hopSpi.keyId != null && hopPrivateKey == null) {
throw SSHErr(
type: SSHErrType.noPrivateKey,
message: l10n.privateKeyNotFoundFmt(hopSpi.keyId ?? ''),
);
}
} else {
hopSpi = Stores.server.box.get(hopId);
}
}
if (hopSpi != null) {
final hopClient = await _genClientInternal(
hopSpi,
privateKey: hopPrivateKey,
jumpChain: jumpChain,
jumpPrivateKeys: jumpPrivateKeys,
timeout: timeout,
onKeyboardInteractive: onKeyboardInteractive,
knownHostFingerprints: hostKeyCache,
onHostKeyAccepted: hostKeyPersist,
onHostKeyPrompt: hostKeyPrompt,
visited: visited,
);
return await hopClient.forwardLocal(spi.ip, spi.port);
}
}
// Direct
@@ -171,32 +243,36 @@ Future<SSHClient> _genClientInternal(
prompt: hostKeyPrompt,
);
final keyId = spi.keyId;
if (keyId == null) {
onStatus?.call(GenSSHClientStatus.pwd);
Future<SSHClient> buildClient(SSHSocket socket) async {
final keyId = spi.keyId;
if (keyId == null) {
onStatus?.call(GenSSHClientStatus.pwd);
return SSHClient(
socket,
username: alterUser ?? spi.user,
onPasswordRequest: () => spi.pwd,
onUserInfoRequest: onKeyboardInteractive,
onVerifyHostKey: hostKeyVerifier.call,
// printDebug: debugPrint,
// printTrace: debugPrint,
);
}
privateKey ??= getPrivateKey(keyId);
onStatus?.call(GenSSHClientStatus.key);
return SSHClient(
socket,
username: alterUser ?? spi.user,
onPasswordRequest: () => spi.pwd,
username: spi.user,
// Must use [compute] here, instead of [Computer.shared.start]
identities: await compute(loadIndentity, privateKey!),
onUserInfoRequest: onKeyboardInteractive,
onVerifyHostKey: hostKeyVerifier.call,
// printDebug: debugPrint,
// printTrace: debugPrint,
);
}
privateKey ??= getPrivateKey(keyId);
onStatus?.call(GenSSHClientStatus.key);
return SSHClient(
socket,
username: spi.user,
// Must use [compute] here, instead of [Computer.shared.start]
identities: await compute(loadIndentity, privateKey),
onUserInfoRequest: onKeyboardInteractive,
onVerifyHostKey: hostKeyVerifier.call,
// printDebug: debugPrint,
// printTrace: debugPrint,
);
return await buildClient(socket);
}
typedef _HostKeyPersistCallback = void Function(String storageKey, String fingerprintHex);

20
lib/data/model/server/server_private_info.dart
View File

@@ -1,6 +1,7 @@
import 'dart:convert';
import 'package:fl_lib/fl_lib.dart';
import 'package:flutter/foundation.dart';
import 'package:freezed_annotation/freezed_annotation.dart';
import 'package:server_box/data/model/app/error.dart';
import 'package:server_box/data/model/server/custom.dart';
@@ -35,8 +36,15 @@ abstract class Spi with _$Spi {
String? alterUrl,
@Default(true) bool autoConnect,
/// [id] of the jump server
/// [id] of the jump server (legacy, single hop)
///
/// Migrated to [jumpChainIds].
String? jumpId,
/// Jump chain hop ids (nearest -> farthest)
///
/// Preferred over [jumpId].
@JsonKey(includeIfNull: false) List<String>? jumpChainIds,
ServerCustom? custom,
WakeOnLanCfg? wolCfg,
@@ -79,7 +87,10 @@ extension Spix on Spi {
String? migrateId() {
if (id.isNotEmpty) return null;
ServerStore.instance.delete(oldId);
final newSpi = copyWith(id: ShortId.generate());
final newSpi = copyWith(
id: ShortId.generate(),
jumpChainIds: jumpChainIds ?? (jumpId == null ? null : [jumpId!]),
);
newSpi.save();
return newSpi.id;
}
@@ -94,7 +105,8 @@ extension Spix on Spi {
port == other.port &&
pwd == other.pwd &&
keyId == other.keyId &&
jumpId == other.jumpId;
jumpId == other.jumpId &&
listEquals(jumpChainIds, other.jumpChainIds);
}
/// Returns true if the connection should be re-established.
@@ -137,7 +149,7 @@ extension Spix on Spi {
tags: ['tag1', 'tag2'],
alterUrl: 'user@ip:port',
autoConnect: true,
jumpId: 'jump_server_id',
jumpChainIds: ['jump_server_id'],
custom: ServerCustom(
pveAddr: 'http://localhost:8006',
pveIgnoreCert: false,

64
lib/data/model/server/server_private_info.freezed.dart
View File

@@ -16,8 +16,13 @@ T _$identity<T>(T value) => value;
mixin _$Spi {
String get name; String get ip; int get port; String get user; String? get pwd;/// [id] of private key
@JsonKey(name: 'pubKeyId') String? get keyId; List<String>? get tags; String? get alterUrl; bool get autoConnect;/// [id] of the jump server
String? get jumpId; ServerCustom? get custom; WakeOnLanCfg? get wolCfg;/// It only applies to SSH terminal.
@JsonKey(name: 'pubKeyId') String? get keyId; List<String>? get tags; String? get alterUrl; bool get autoConnect;/// [id] of the jump server (legacy, single hop)
///
/// Migrated to [jumpChainIds].
String? get jumpId;/// Jump chain hop ids (nearest -> farthest)
///
/// Preferred over [jumpId].
@JsonKey(includeIfNull: false) List<String>? get jumpChainIds; ServerCustom? get custom; WakeOnLanCfg? get wolCfg;/// It only applies to SSH terminal.
Map<String, String>? get envs;@JsonKey(fromJson: Spi.parseId) String get id;/// Custom system type (unix or windows). If set, skip auto-detection.
@JsonKey(includeIfNull: false) SystemType? get customSystemType;/// Disabled command types for this server
@JsonKey(includeIfNull: false) List<String>? get disabledCmdTypes;
@@ -33,12 +38,12 @@ $SpiCopyWith<Spi> get copyWith => _$SpiCopyWithImpl<Spi>(this as Spi, _$identity
@override
bool operator ==(Object other) {
return identical(this, other) || (other.runtimeType == runtimeType&&other is Spi&&(identical(other.name, name) || other.name == name)&&(identical(other.ip, ip) || other.ip == ip)&&(identical(other.port, port) || other.port == port)&&(identical(other.user, user) || other.user == user)&&(identical(other.pwd, pwd) || other.pwd == pwd)&&(identical(other.keyId, keyId) || other.keyId == keyId)&&const DeepCollectionEquality().equals(other.tags, tags)&&(identical(other.alterUrl, alterUrl) || other.alterUrl == alterUrl)&&(identical(other.autoConnect, autoConnect) || other.autoConnect == autoConnect)&&(identical(other.jumpId, jumpId) || other.jumpId == jumpId)&&(identical(other.custom, custom) || other.custom == custom)&&(identical(other.wolCfg, wolCfg) || other.wolCfg == wolCfg)&&const DeepCollectionEquality().equals(other.envs, envs)&&(identical(other.id, id) || other.id == id)&&(identical(other.customSystemType, customSystemType) || other.customSystemType == customSystemType)&&const DeepCollectionEquality().equals(other.disabledCmdTypes, disabledCmdTypes));
return identical(this, other) || (other.runtimeType == runtimeType&&other is Spi&&(identical(other.name, name) || other.name == name)&&(identical(other.ip, ip) || other.ip == ip)&&(identical(other.port, port) || other.port == port)&&(identical(other.user, user) || other.user == user)&&(identical(other.pwd, pwd) || other.pwd == pwd)&&(identical(other.keyId, keyId) || other.keyId == keyId)&&const DeepCollectionEquality().equals(other.tags, tags)&&(identical(other.alterUrl, alterUrl) || other.alterUrl == alterUrl)&&(identical(other.autoConnect, autoConnect) || other.autoConnect == autoConnect)&&(identical(other.jumpId, jumpId) || other.jumpId == jumpId)&&const DeepCollectionEquality().equals(other.jumpChainIds, jumpChainIds)&&(identical(other.custom, custom) || other.custom == custom)&&(identical(other.wolCfg, wolCfg) || other.wolCfg == wolCfg)&&const DeepCollectionEquality().equals(other.envs, envs)&&(identical(other.id, id) || other.id == id)&&(identical(other.customSystemType, customSystemType) || other.customSystemType == customSystemType)&&const DeepCollectionEquality().equals(other.disabledCmdTypes, disabledCmdTypes));
}
@JsonKey(includeFromJson: false, includeToJson: false)
@override
int get hashCode => Object.hash(runtimeType,name,ip,port,user,pwd,keyId,const DeepCollectionEquality().hash(tags),alterUrl,autoConnect,jumpId,custom,wolCfg,const DeepCollectionEquality().hash(envs),id,customSystemType,const DeepCollectionEquality().hash(disabledCmdTypes));
int get hashCode => Object.hash(runtimeType,name,ip,port,user,pwd,keyId,const DeepCollectionEquality().hash(tags),alterUrl,autoConnect,jumpId,const DeepCollectionEquality().hash(jumpChainIds),custom,wolCfg,const DeepCollectionEquality().hash(envs),id,customSystemType,const DeepCollectionEquality().hash(disabledCmdTypes));
@@ -49,7 +54,7 @@ abstract mixin class $SpiCopyWith<$Res> {
factory $SpiCopyWith(Spi value, $Res Function(Spi) _then) = _$SpiCopyWithImpl;
@useResult
$Res call({
String name, String ip, int port, String user, String? pwd,@JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs,@JsonKey(fromJson: Spi.parseId) String id,@JsonKey(includeIfNull: false) SystemType? customSystemType,@JsonKey(includeIfNull: false) List<String>? disabledCmdTypes
String name, String ip, int port, String user, String? pwd,@JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId,@JsonKey(includeIfNull: false) List<String>? jumpChainIds, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs,@JsonKey(fromJson: Spi.parseId) String id,@JsonKey(includeIfNull: false) SystemType? customSystemType,@JsonKey(includeIfNull: false) List<String>? disabledCmdTypes
});
@@ -66,7 +71,7 @@ class _$SpiCopyWithImpl<$Res>
/// Create a copy of Spi
/// with the given fields replaced by the non-null parameter values.
@pragma('vm:prefer-inline') @override $Res call({Object? name = null,Object? ip = null,Object? port = null,Object? user = null,Object? pwd = freezed,Object? keyId = freezed,Object? tags = freezed,Object? alterUrl = freezed,Object? autoConnect = null,Object? jumpId = freezed,Object? custom = freezed,Object? wolCfg = freezed,Object? envs = freezed,Object? id = null,Object? customSystemType = freezed,Object? disabledCmdTypes = freezed,}) {
@pragma('vm:prefer-inline') @override $Res call({Object? name = null,Object? ip = null,Object? port = null,Object? user = null,Object? pwd = freezed,Object? keyId = freezed,Object? tags = freezed,Object? alterUrl = freezed,Object? autoConnect = null,Object? jumpId = freezed,Object? jumpChainIds = freezed,Object? custom = freezed,Object? wolCfg = freezed,Object? envs = freezed,Object? id = null,Object? customSystemType = freezed,Object? disabledCmdTypes = freezed,}) {
return _then(_self.copyWith(
name: null == name ? _self.name : name // ignore: cast_nullable_to_non_nullable
as String,ip: null == ip ? _self.ip : ip // ignore: cast_nullable_to_non_nullable
@@ -78,7 +83,8 @@ as String?,tags: freezed == tags ? _self.tags : tags // ignore: cast_nullable_to
as List<String>?,alterUrl: freezed == alterUrl ? _self.alterUrl : alterUrl // ignore: cast_nullable_to_non_nullable
as String?,autoConnect: null == autoConnect ? _self.autoConnect : autoConnect // ignore: cast_nullable_to_non_nullable
as bool,jumpId: freezed == jumpId ? _self.jumpId : jumpId // ignore: cast_nullable_to_non_nullable
as String?,custom: freezed == custom ? _self.custom : custom // ignore: cast_nullable_to_non_nullable
as String?,jumpChainIds: freezed == jumpChainIds ? _self.jumpChainIds : jumpChainIds // ignore: cast_nullable_to_non_nullable
as List<String>?,custom: freezed == custom ? _self.custom : custom // ignore: cast_nullable_to_non_nullable
as ServerCustom?,wolCfg: freezed == wolCfg ? _self.wolCfg : wolCfg // ignore: cast_nullable_to_non_nullable
as WakeOnLanCfg?,envs: freezed == envs ? _self.envs : envs // ignore: cast_nullable_to_non_nullable
as Map<String, String>?,id: null == id ? _self.id : id // ignore: cast_nullable_to_non_nullable
@@ -169,10 +175,10 @@ return $default(_that);case _:
/// }
/// ```
@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( String name, String ip, int port, String user, String? pwd, @JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) String id, @JsonKey(includeIfNull: false) SystemType? customSystemType, @JsonKey(includeIfNull: false) List<String>? disabledCmdTypes)? $default,{required TResult orElse(),}) {final _that = this;
@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( String name, String ip, int port, String user, String? pwd, @JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, @JsonKey(includeIfNull: false) List<String>? jumpChainIds, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) String id, @JsonKey(includeIfNull: false) SystemType? customSystemType, @JsonKey(includeIfNull: false) List<String>? disabledCmdTypes)? $default,{required TResult orElse(),}) {final _that = this;
switch (_that) {
case _Spi() when $default != null:
return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,_that.tags,_that.alterUrl,_that.autoConnect,_that.jumpId,_that.custom,_that.wolCfg,_that.envs,_that.id,_that.customSystemType,_that.disabledCmdTypes);case _:
return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,_that.tags,_that.alterUrl,_that.autoConnect,_that.jumpId,_that.jumpChainIds,_that.custom,_that.wolCfg,_that.envs,_that.id,_that.customSystemType,_that.disabledCmdTypes);case _:
return orElse();
}
@@ -190,10 +196,10 @@ return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,
/// }
/// ```
@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String name, String ip, int port, String user, String? pwd, @JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) String id, @JsonKey(includeIfNull: false) SystemType? customSystemType, @JsonKey(includeIfNull: false) List<String>? disabledCmdTypes) $default,) {final _that = this;
@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String name, String ip, int port, String user, String? pwd, @JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, @JsonKey(includeIfNull: false) List<String>? jumpChainIds, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) String id, @JsonKey(includeIfNull: false) SystemType? customSystemType, @JsonKey(includeIfNull: false) List<String>? disabledCmdTypes) $default,) {final _that = this;
switch (_that) {
case _Spi():
return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,_that.tags,_that.alterUrl,_that.autoConnect,_that.jumpId,_that.custom,_that.wolCfg,_that.envs,_that.id,_that.customSystemType,_that.disabledCmdTypes);case _:
return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,_that.tags,_that.alterUrl,_that.autoConnect,_that.jumpId,_that.jumpChainIds,_that.custom,_that.wolCfg,_that.envs,_that.id,_that.customSystemType,_that.disabledCmdTypes);case _:
throw StateError('Unexpected subclass');
}
@@ -210,10 +216,10 @@ return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,
/// }
/// ```
@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String name, String ip, int port, String user, String? pwd, @JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) String id, @JsonKey(includeIfNull: false) SystemType? customSystemType, @JsonKey(includeIfNull: false) List<String>? disabledCmdTypes)? $default,) {final _that = this;
@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String name, String ip, int port, String user, String? pwd, @JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, @JsonKey(includeIfNull: false) List<String>? jumpChainIds, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) String id, @JsonKey(includeIfNull: false) SystemType? customSystemType, @JsonKey(includeIfNull: false) List<String>? disabledCmdTypes)? $default,) {final _that = this;
switch (_that) {
case _Spi() when $default != null:
return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,_that.tags,_that.alterUrl,_that.autoConnect,_that.jumpId,_that.custom,_that.wolCfg,_that.envs,_that.id,_that.customSystemType,_that.disabledCmdTypes);case _:
return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,_that.tags,_that.alterUrl,_that.autoConnect,_that.jumpId,_that.jumpChainIds,_that.custom,_that.wolCfg,_that.envs,_that.id,_that.customSystemType,_that.disabledCmdTypes);case _:
return null;
}
@@ -225,7 +231,7 @@ return $default(_that.name,_that.ip,_that.port,_that.user,_that.pwd,_that.keyId,
@JsonSerializable(includeIfNull: false)
class _Spi extends Spi {
const _Spi({required this.name, required this.ip, required this.port, required this.user, this.pwd, @JsonKey(name: 'pubKeyId') this.keyId, final List<String>? tags, this.alterUrl, this.autoConnect = true, this.jumpId, this.custom, this.wolCfg, final Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) this.id = '', @JsonKey(includeIfNull: false) this.customSystemType, @JsonKey(includeIfNull: false) final List<String>? disabledCmdTypes}): _tags = tags,_envs = envs,_disabledCmdTypes = disabledCmdTypes,super._();
const _Spi({required this.name, required this.ip, required this.port, required this.user, this.pwd, @JsonKey(name: 'pubKeyId') this.keyId, final List<String>? tags, this.alterUrl, this.autoConnect = true, this.jumpId, @JsonKey(includeIfNull: false) final List<String>? jumpChainIds, this.custom, this.wolCfg, final Map<String, String>? envs, @JsonKey(fromJson: Spi.parseId) this.id = '', @JsonKey(includeIfNull: false) this.customSystemType, @JsonKey(includeIfNull: false) final List<String>? disabledCmdTypes}): _tags = tags,_jumpChainIds = jumpChainIds,_envs = envs,_disabledCmdTypes = disabledCmdTypes,super._();
factory _Spi.fromJson(Map<String, dynamic> json) => _$SpiFromJson(json);
@override final String name;
@@ -246,8 +252,25 @@ class _Spi extends Spi {
@override final String? alterUrl;
@override@JsonKey() final bool autoConnect;
/// [id] of the jump server
/// [id] of the jump server (legacy, single hop)
///
/// Migrated to [jumpChainIds].
@override final String? jumpId;
/// Jump chain hop ids (nearest -> farthest)
///
/// Preferred over [jumpId].
final List<String>? _jumpChainIds;
/// Jump chain hop ids (nearest -> farthest)
///
/// Preferred over [jumpId].
@override@JsonKey(includeIfNull: false) List<String>? get jumpChainIds {
final value = _jumpChainIds;
if (value == null) return null;
if (_jumpChainIds is EqualUnmodifiableListView) return _jumpChainIds;
// ignore: implicit_dynamic_type
return EqualUnmodifiableListView(value);
}
@override final ServerCustom? custom;
@override final WakeOnLanCfg? wolCfg;
/// It only applies to SSH terminal.
@@ -289,12 +312,12 @@ Map<String, dynamic> toJson() {
@override
bool operator ==(Object other) {
return identical(this, other) || (other.runtimeType == runtimeType&&other is _Spi&&(identical(other.name, name) || other.name == name)&&(identical(other.ip, ip) || other.ip == ip)&&(identical(other.port, port) || other.port == port)&&(identical(other.user, user) || other.user == user)&&(identical(other.pwd, pwd) || other.pwd == pwd)&&(identical(other.keyId, keyId) || other.keyId == keyId)&&const DeepCollectionEquality().equals(other._tags, _tags)&&(identical(other.alterUrl, alterUrl) || other.alterUrl == alterUrl)&&(identical(other.autoConnect, autoConnect) || other.autoConnect == autoConnect)&&(identical(other.jumpId, jumpId) || other.jumpId == jumpId)&&(identical(other.custom, custom) || other.custom == custom)&&(identical(other.wolCfg, wolCfg) || other.wolCfg == wolCfg)&&const DeepCollectionEquality().equals(other._envs, _envs)&&(identical(other.id, id) || other.id == id)&&(identical(other.customSystemType, customSystemType) || other.customSystemType == customSystemType)&&const DeepCollectionEquality().equals(other._disabledCmdTypes, _disabledCmdTypes));
return identical(this, other) || (other.runtimeType == runtimeType&&other is _Spi&&(identical(other.name, name) || other.name == name)&&(identical(other.ip, ip) || other.ip == ip)&&(identical(other.port, port) || other.port == port)&&(identical(other.user, user) || other.user == user)&&(identical(other.pwd, pwd) || other.pwd == pwd)&&(identical(other.keyId, keyId) || other.keyId == keyId)&&const DeepCollectionEquality().equals(other._tags, _tags)&&(identical(other.alterUrl, alterUrl) || other.alterUrl == alterUrl)&&(identical(other.autoConnect, autoConnect) || other.autoConnect == autoConnect)&&(identical(other.jumpId, jumpId) || other.jumpId == jumpId)&&const DeepCollectionEquality().equals(other._jumpChainIds, _jumpChainIds)&&(identical(other.custom, custom) || other.custom == custom)&&(identical(other.wolCfg, wolCfg) || other.wolCfg == wolCfg)&&const DeepCollectionEquality().equals(other._envs, _envs)&&(identical(other.id, id) || other.id == id)&&(identical(other.customSystemType, customSystemType) || other.customSystemType == customSystemType)&&const DeepCollectionEquality().equals(other._disabledCmdTypes, _disabledCmdTypes));
}
@JsonKey(includeFromJson: false, includeToJson: false)
@override
int get hashCode => Object.hash(runtimeType,name,ip,port,user,pwd,keyId,const DeepCollectionEquality().hash(_tags),alterUrl,autoConnect,jumpId,custom,wolCfg,const DeepCollectionEquality().hash(_envs),id,customSystemType,const DeepCollectionEquality().hash(_disabledCmdTypes));
int get hashCode => Object.hash(runtimeType,name,ip,port,user,pwd,keyId,const DeepCollectionEquality().hash(_tags),alterUrl,autoConnect,jumpId,const DeepCollectionEquality().hash(_jumpChainIds),custom,wolCfg,const DeepCollectionEquality().hash(_envs),id,customSystemType,const DeepCollectionEquality().hash(_disabledCmdTypes));
@@ -305,7 +328,7 @@ abstract mixin class _$SpiCopyWith<$Res> implements $SpiCopyWith<$Res> {
factory _$SpiCopyWith(_Spi value, $Res Function(_Spi) _then) = __$SpiCopyWithImpl;
@override @useResult
$Res call({
String name, String ip, int port, String user, String? pwd,@JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs,@JsonKey(fromJson: Spi.parseId) String id,@JsonKey(includeIfNull: false) SystemType? customSystemType,@JsonKey(includeIfNull: false) List<String>? disabledCmdTypes
String name, String ip, int port, String user, String? pwd,@JsonKey(name: 'pubKeyId') String? keyId, List<String>? tags, String? alterUrl, bool autoConnect, String? jumpId,@JsonKey(includeIfNull: false) List<String>? jumpChainIds, ServerCustom? custom, WakeOnLanCfg? wolCfg, Map<String, String>? envs,@JsonKey(fromJson: Spi.parseId) String id,@JsonKey(includeIfNull: false) SystemType? customSystemType,@JsonKey(includeIfNull: false) List<String>? disabledCmdTypes
});
@@ -322,7 +345,7 @@ class __$SpiCopyWithImpl<$Res>
/// Create a copy of Spi
/// with the given fields replaced by the non-null parameter values.
@override @pragma('vm:prefer-inline') $Res call({Object? name = null,Object? ip = null,Object? port = null,Object? user = null,Object? pwd = freezed,Object? keyId = freezed,Object? tags = freezed,Object? alterUrl = freezed,Object? autoConnect = null,Object? jumpId = freezed,Object? custom = freezed,Object? wolCfg = freezed,Object? envs = freezed,Object? id = null,Object? customSystemType = freezed,Object? disabledCmdTypes = freezed,}) {
@override @pragma('vm:prefer-inline') $Res call({Object? name = null,Object? ip = null,Object? port = null,Object? user = null,Object? pwd = freezed,Object? keyId = freezed,Object? tags = freezed,Object? alterUrl = freezed,Object? autoConnect = null,Object? jumpId = freezed,Object? jumpChainIds = freezed,Object? custom = freezed,Object? wolCfg = freezed,Object? envs = freezed,Object? id = null,Object? customSystemType = freezed,Object? disabledCmdTypes = freezed,}) {
return _then(_Spi(
name: null == name ? _self.name : name // ignore: cast_nullable_to_non_nullable
as String,ip: null == ip ? _self.ip : ip // ignore: cast_nullable_to_non_nullable
@@ -334,7 +357,8 @@ as String?,tags: freezed == tags ? _self._tags : tags // ignore: cast_nullable_t
as List<String>?,alterUrl: freezed == alterUrl ? _self.alterUrl : alterUrl // ignore: cast_nullable_to_non_nullable
as String?,autoConnect: null == autoConnect ? _self.autoConnect : autoConnect // ignore: cast_nullable_to_non_nullable
as bool,jumpId: freezed == jumpId ? _self.jumpId : jumpId // ignore: cast_nullable_to_non_nullable
as String?,custom: freezed == custom ? _self.custom : custom // ignore: cast_nullable_to_non_nullable
as String?,jumpChainIds: freezed == jumpChainIds ? _self._jumpChainIds : jumpChainIds // ignore: cast_nullable_to_non_nullable
as List<String>?,custom: freezed == custom ? _self.custom : custom // ignore: cast_nullable_to_non_nullable
as ServerCustom?,wolCfg: freezed == wolCfg ? _self.wolCfg : wolCfg // ignore: cast_nullable_to_non_nullable
as WakeOnLanCfg?,envs: freezed == envs ? _self._envs : envs // ignore: cast_nullable_to_non_nullable
as Map<String, String>?,id: null == id ? _self.id : id // ignore: cast_nullable_to_non_nullable

4
lib/data/model/server/server_private_info.g.dart
View File

@@ -17,6 +17,9 @@ _Spi _$SpiFromJson(Map<String, dynamic> json) => _Spi(
alterUrl: json['alterUrl'] as String?,
autoConnect: json['autoConnect'] as bool? ?? true,
jumpId: json['jumpId'] as String?,
jumpChainIds: (json['jumpChainIds'] as List<dynamic>?)
?.map((e) => e as String)
.toList(),
custom: json['custom'] == null
? null
: ServerCustom.fromJson(json['custom'] as Map<String, dynamic>),
@@ -47,6 +50,7 @@ Map<String, dynamic> _$SpiToJson(_Spi instance) => <String, dynamic>{
'alterUrl': ?instance.alterUrl,
'autoConnect': instance.autoConnect,
'jumpId': ?instance.jumpId,
'jumpChainIds': ?instance.jumpChainIds,
'custom': ?instance.custom,
'wolCfg': ?instance.wolCfg,
'envs': ?instance.envs,

24
lib/data/model/sftp/req.dart
View File

@@ -15,31 +15,29 @@ class SftpReq {
if (keyId != null) {
privateKey = getPrivateKey(keyId);
}
if (spi.jumpId != null) {
if (spi.jumpChainIds != null || spi.jumpId != null) {
final chain = <Spi>[];
final keys = <String?>[];
final visited = <String>{spi.id.isNotEmpty ? spi.id : spi.oldId};
var currentJumpId = spi.jumpId;
while (currentJumpId != null) {
final jumpSpi = Stores.server.box.get(currentJumpId);
if (jumpSpi == null) break;
final hopIds = spi.jumpChainIds ?? (spi.jumpId == null ? const <String>[] : [spi.jumpId!]);
for (final hopId in hopIds) {
final hopSpi = Stores.server.box.get(hopId);
if (hopSpi == null) break;
// Prevent infinite loops if user mis-configured jump servers.
final jumpId = jumpSpi.id.isNotEmpty ? jumpSpi.id : jumpSpi.oldId;
if (!visited.add(jumpId)) {
final hopKey = hopSpi.id.isNotEmpty ? hopSpi.id : hopSpi.oldId;
if (!visited.add(hopKey)) {
throw SSHErr(
type: SSHErrType.connect,
message: 'Jump loop detected while building SFTP chain: ${jumpSpi.name}',
message: 'Jump loop detected while building SFTP chain: ${hopSpi.name}',
);
}
chain.add(jumpSpi);
keys.add(jumpSpi.keyId != null ? getPrivateKey(jumpSpi.keyId!) : null);
currentJumpId = jumpSpi.jumpId;
chain.add(hopSpi);
keys.add(hopSpi.keyId != null ? getPrivateKey(hopSpi.keyId!) : null);
}
// Always set when `spi.jumpId != null` so the isolate won't fallback to Stores.
// Always set when a jump is configured so the isolate won't fallback to Stores.
jumpChain = chain;
jumpPrivateKeys = keys;
}

2
lib/data/provider/server/all.g.dart
View File

@@ -41,7 +41,7 @@ final class ServersNotifierProvider
}
}
String _$serversNotifierHash() => r'dc5da44f9bd8d8dcfba3e6e932cca3e2f379e582';
String _$serversNotifierHash() => r'277d1b219235f14bcc1b82a1e16260c2f28decdb';
abstract class _$ServersNotifier extends $Notifier<ServersState> {
ServersState build();

2
lib/data/provider/server/single.dart
View File

@@ -135,7 +135,7 @@ class ServerNotifier extends _$ServerNotifier {
final time2 = DateTime.now();
final spentTime = time2.difference(time1).inMilliseconds;
if (spi.jumpId == null) {
if (spi.jumpChainIds == null && spi.jumpId == null) {
Loggers.app.info('Connected to ${spi.name} in $spentTime ms.');
} else {
Loggers.app.info('Jump to ${spi.name} in $spentTime ms.');

2
lib/data/provider/server/single.g.dart
View File

@@ -58,7 +58,7 @@ final class ServerNotifierProvider
}
}
String _$serverNotifierHash() => r'04b1beef4d96242fd10d5b523c6f5f17eb774bae';
String _$serverNotifierHash() => r'52e806bcc32a7818d1ec2b07a3c683b06885c9f8';
final class ServerNotifierFamily extends $Family
with

15
lib/data/store/server.dart
View File

@@ -89,15 +89,12 @@ class ServerStore extends HiveStore {
// Replace ids in jump server settings.
final spi = get<Spi>(newId);
if (spi != null) {
final jumpId = spi.jumpId; // This could be an oldId.
// Check if this jumpId corresponds to a server that was also migrated.
if (jumpId != null && idMap.containsKey(jumpId)) {
final newJumpId = idMap[jumpId];
if (spi.jumpId != newJumpId) {
final newSpi = spi.copyWith(jumpId: newJumpId);
update(spi, newSpi);
}
}
final jumpChainIds = spi.jumpChainIds ?? (spi.jumpId == null ? null : [spi.jumpId!]);
if (jumpChainIds == null || jumpChainIds.isEmpty) continue;
final newChain = jumpChainIds.map((e) => idMap[e] ?? e).toList();
final newSpi = spi.copyWith(jumpId: null, jumpChainIds: newChain);
update(spi, newSpi);
}
// Replace ids in [Snippet]

7
lib/hive/hive_adapters.g.dart
View File

@@ -107,6 +107,7 @@ class SpiAdapter extends TypeAdapter<Spi> {
alterUrl: fields[7] as String?,
autoConnect: fields[8] == null ? true : fields[8] as bool,
jumpId: fields[9] as String?,
jumpChainIds: (fields[16] as List?)?.cast<String>(),
custom: fields[10] as ServerCustom?,
wolCfg: fields[11] as WakeOnLanCfg?,
envs: (fields[12] as Map?)?.cast<String, String>(),
@@ -119,7 +120,7 @@ class SpiAdapter extends TypeAdapter<Spi> {
@override
void write(BinaryWriter writer, Spi obj) {
writer
..writeByte(16)
..writeByte(17)
..writeByte(0)
..write(obj.name)
..writeByte(1)
@@ -151,7 +152,9 @@ class SpiAdapter extends TypeAdapter<Spi> {
..writeByte(14)
..write(obj.customSystemType)
..writeByte(15)
..write(obj.disabledCmdTypes);
..write(obj.disabledCmdTypes)
..writeByte(16)
..write(obj.jumpChainIds);
}
@override

4
lib/hive/hive_adapters.g.yaml
View File

@@ -27,7 +27,7 @@ types:
index: 4
Spi:
typeId: 3
nextIndex: 16
nextIndex: 17
fields:
name:
index: 0
@@ -61,6 +61,8 @@ types:
index: 14
disabledCmdTypes:
index: 15
jumpChainIds:
index: 16
VirtKey:
typeId: 4
nextIndex: 45

14
lib/view/page/server/edit/actions.dart
View File

@@ -222,6 +222,15 @@ extension _Actions on _ServerEditPageState {
return;
}
if (this.spi != null) {
final ok = await context.showRoundDialog<bool>(
title: libL10n.attention,
child: Text(libL10n.askContinue('${l10n.jumpServer} ${libL10n.setting}')),
actions: Btnx.cancelOk,
);
if (ok != true) return;
}
if (_keyIdx.value == null && _passwordController.text.isEmpty) {
final ok = await context.showRoundDialog<bool>(
title: libL10n.attention,
@@ -277,7 +286,8 @@ extension _Actions on _ServerEditPageState {
tags: _tags.value.isEmpty ? null : _tags.value.toList(),
alterUrl: _altUrlController.text.selfNotEmptyOrNull,
autoConnect: _autoConnect.value,
jumpId: _jumpServer.value,
jumpId: null,
jumpChainIds: _jumpChain.value.isEmpty ? null : _jumpChain.value,
custom: custom,
wolCfg: wol,
envs: _env.value.isEmpty ? null : _env.value,
@@ -421,7 +431,7 @@ extension _Utils on _ServerEditPageState {
_altUrlController.text = spi.alterUrl ?? '';
_autoConnect.value = spi.autoConnect;
_jumpServer.value = spi.jumpId;
_jumpChain.value = spi.jumpChainIds ?? (spi.jumpId == null ? const <String>[] : [spi.jumpId!]);
final custom = spi.custom;
if (custom != null) {

6
lib/view/page/server/edit/edit.dart
View File

@@ -25,6 +25,7 @@ import 'package:server_box/view/page/private_key/edit.dart';
import 'package:server_box/view/page/server/discovery/discovery.dart';
part 'actions.dart';
part 'jump_chain.dart';
part 'widget.dart';
class ServerEditPage extends ConsumerStatefulWidget {
@@ -66,7 +67,7 @@ class _ServerEditPageState extends ConsumerState<ServerEditPage> with AfterLayou
/// -1: non selected, null: password, others: index of private key
final _keyIdx = ValueNotifier<int?>(null);
final _autoConnect = ValueNotifier(true);
final _jumpServer = nvn<String?>();
final _jumpChain = <String>[].vn;
final _pveIgnoreCert = ValueNotifier(false);
final _env = <String, String>{}.vn;
final _customCmds = <String, String>{}.vn;
@@ -100,7 +101,7 @@ class _ServerEditPageState extends ConsumerState<ServerEditPage> with AfterLayou
_keyIdx.dispose();
_autoConnect.dispose();
_jumpServer.dispose();
_jumpChain.dispose();
_pveIgnoreCert.dispose();
_env.dispose();
_customCmds.dispose();
@@ -199,7 +200,6 @@ class _ServerEditPageState extends ConsumerState<ServerEditPage> with AfterLayou
),
_buildAuth(),
_buildSystemType(),
_buildJumpServer(),
_buildMore(),
];
return AutoMultiList(children: children);

176
lib/view/page/server/edit/jump_chain.dart Normal file
View File

@@ -0,0 +1,176 @@
part of 'edit.dart';
extension _JumpChain on _ServerEditPageState {
Widget _buildJumpChain() {
final serversState = ref.watch(serversProvider);
final servers = serversState.servers;
final selfId = spi?.id;
if (selfId == null) {
return ListTile(
leading: const Icon(Icons.map),
title: Text(l10n.jumpServer),
subtitle: Text(libL10n.empty, style: UIs.textGrey),
).cardx;
}
String serverNameOrId(String id) {
return servers[id]?.name ?? id;
}
List<String> flattenHopIds(String id, {required Set<String> visited}) {
if (!visited.add(id)) return const <String>[];
final spi = servers[id];
if (spi == null) return const <String>[];
final hops = spi.jumpChainIds;
if (hops == null || hops.isEmpty) return const <String>[];
final flat = <String>[];
for (final hopId in hops) {
flat.add(hopId);
flat.addAll(flattenHopIds(hopId, visited: visited));
}
return flat;
}
bool containsCycleWithCandidate(String candidateId) {
final visited = <String>{selfId};
final queue = [..._jumpChain.value, candidateId];
for (final hopId in queue) {
if (hopId == selfId) return true;
if (!visited.add(hopId)) return true;
}
for (final hopId in queue) {
final extra = flattenHopIds(hopId, visited: visited);
for (final id in extra) {
if (id == selfId) return true;
}
}
return false;
}
String? buildTextNearToFar() {
if (_jumpChain.value.isEmpty) return null;
final flat = <String>[];
final visited = <String>{selfId};
for (final hopId in _jumpChain.value) {
flat.add(hopId);
flat.addAll(flattenHopIds(hopId, visited: visited));
}
final names = flat.map(serverNameOrId).toList();
if (names.isEmpty) return null;
return names.join(' → ');
}
String? buildTextFarToNear() {
final text = buildTextNearToFar();
if (text == null) return null;
return text.split(' → ').reversed.join(' → ');
}
return _jumpChain.listenVal((_) {
final nearToFar2 = buildTextNearToFar();
final farToNear2 = buildTextFarToNear();
return ListTile(
leading: const Icon(Icons.map),
title: Text(l10n.jumpServer),
subtitle: (nearToFar2 == null)
? Text(libL10n.empty, style: UIs.textGrey)
: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
Text('${l10n.route}: $nearToFar2', style: UIs.textGrey),
Text('${libL10n.path}: $farToNear2', style: UIs.textGrey),
],
),
trailing: const Icon(Icons.keyboard_arrow_right),
onTap: () async {
if (serversState.serverOrder.isEmpty) {
context.showSnackBar(libL10n.empty);
return;
}
final candidates = serversState.serverOrder.where((e) => e != selfId).toList();
if (candidates.isEmpty) {
context.showSnackBar(libL10n.empty);
return;
}
// Add a hop
final nextHop = await context.showPickSingleDialog<String>(
title: '${l10n.jumpServer} (+1)',
items: candidates.where((id) => !containsCycleWithCandidate(id)).toList(),
display: serverNameOrId,
clearable: true,
);
if (nextHop == null) return;
_jumpChain.value = [..._jumpChain.value, nextHop];
// If user wants to manage order/remove, offer a simple editor dialog
await context.showRoundDialog<void>(
title: l10n.jumpServer,
child: SizedBox(
width: 320,
child: _jumpChain.listenVal((hops) {
return ListView.builder(
shrinkWrap: true,
itemCount: hops.length,
itemBuilder: (context, index) {
final id = hops[index];
return ListTile(
title: Text(serverNameOrId(id)),
subtitle: Text(id, style: UIs.textGrey),
trailing: Wrap(
spacing: 4,
children: [
IconButton(
icon: const Icon(Icons.arrow_upward, size: 18),
onPressed: index == 0
? null
: () {
final list = [..._jumpChain.value];
final tmp = list[index - 1];
list[index - 1] = list[index];
list[index] = tmp;
_jumpChain.value = list;
},
),
IconButton(
icon: const Icon(Icons.arrow_downward, size: 18),
onPressed: index == hops.length - 1
? null
: () {
final list = [..._jumpChain.value];
final tmp = list[index + 1];
list[index + 1] = list[index];
list[index] = tmp;
_jumpChain.value = list;
},
),
IconButton(
icon: const Icon(Icons.delete, size: 18),
onPressed: () {
final list = [..._jumpChain.value]..removeAt(index);
_jumpChain.value = list;
},
),
],
),
);
},
);
}),
),
actions: Btnx.oks,
);
},
).cardx;
});
}
}

95
lib/view/page/server/edit/widget.dart
View File

@@ -132,6 +132,7 @@ extension _Widgets on _ServerEditPageState {
return ExpandTile(
title: Text(l10n.more),
children: [
_buildJumpChain(),
Input(
controller: _logoUrlCtrl,
type: TextInputType.url,
@@ -347,100 +348,6 @@ extension _Widgets on _ServerEditPageState {
);
}
Widget _buildJumpServer() {
const padding = EdgeInsets.only(left: 13, right: 13, bottom: 7);
final servers = ref.watch(serversProvider).servers;
final selfId = spi?.id;
bool wouldCreateCycle(Spi candidate) {
if (selfId == null) return false;
if (candidate.id == selfId) return true;
final visited = <String>{selfId};
var current = candidate;
while (true) {
final jumpId = current.jumpId;
if (jumpId == null) return false;
if (jumpId == selfId) return true;
if (!visited.add(jumpId)) {
// Candidate already contains a loop; treat as invalid to avoid infinite jump.
return true;
}
final next = servers[jumpId];
if (next == null) return false;
current = next;
}
}
String? buildJumpChainText(String jumpId) {
final chain = <Spi>[];
final visited = <String>{};
var currentId = jumpId;
while (true) {
if (!visited.add(currentId)) {
break;
}
final srv = servers[currentId];
if (srv == null) break;
chain.add(srv);
final nextId = srv.jumpId;
if (nextId == null) break;
currentId = nextId;
}
if (chain.isEmpty) return null;
// Display as actual connection order: farthest -> ... -> nearest.
return chain.reversed.map((e) => e.name).join(' → ');
}
final srvs = servers.values.where((e) => e.id != selfId && !wouldCreateCycle(e)).toList();
final body = _jumpServer.listenVal((val) {
final srv = srvs.firstWhereOrNull((e) => e.id == _jumpServer.value);
final chainText = val == null ? null : buildJumpChainText(val);
return Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
if (chainText != null)
Padding(
padding: const EdgeInsets.only(bottom: 7),
child: Text(chainText, style: UIs.textGrey),
),
Choice<Spi>(
multiple: false,
clearable: true,
value: srv != null ? [srv] : [],
builder: (state, _) => Wrap(
children: List<Widget>.generate(srvs.length, (index) {
final item = srvs[index];
return ChoiceChipX<Spi>(
label: item.name,
state: state,
value: item,
onSelected: (srv, on) {
if (on) {
_jumpServer.value = srv.id;
} else {
_jumpServer.value = null;
}
},
);
}),
),
),
],
);
});
return ExpandTile(
leading: const Icon(Icons.map),
initiallyExpanded: _jumpServer.value != null,
childrenPadding: padding,
title: Text(l10n.jumpServer),
children: [body],
).cardx;
}
Widget _buildWriteScriptTip() {
return Btn.tile(