diff --git a/.github/CRONET_GO_VERSION b/.github/CRONET_GO_VERSION index 47b09f9b6b..40dfcd0d14 100644 --- a/.github/CRONET_GO_VERSION +++ b/.github/CRONET_GO_VERSION @@ -1 +1 @@ -2fef65f9dba90ddb89a87d00a6eb6165487c10c1 +ea7cd33752aed62603775af3df946c1b83f4b0b3 diff --git a/adapter/inbound.go b/adapter/inbound.go index b32e9f8278..acd6f4912c 100644 --- a/adapter/inbound.go +++ b/adapter/inbound.go @@ -2,6 +2,7 @@ package adapter import ( "context" + "net" "net/netip" "time" @@ -82,6 +83,8 @@ type InboundContext struct { SourceGeoIPCode string GeoIPCode string ProcessInfo *ConnectionOwner + SourceMACAddress net.HardwareAddr + SourceHostname string QueryType uint16 FakeIP bool diff --git a/adapter/neighbor.go b/adapter/neighbor.go new file mode 100644 index 0000000000..d917db5b7a --- /dev/null +++ b/adapter/neighbor.go @@ -0,0 +1,23 @@ +package adapter + +import ( + "net" + "net/netip" +) + +type NeighborEntry struct { + Address netip.Addr + MACAddress net.HardwareAddr + Hostname string +} + +type NeighborResolver interface { + LookupMAC(address netip.Addr) (net.HardwareAddr, bool) + LookupHostname(address netip.Addr) (string, bool) + Start() error + Close() error +} + +type NeighborUpdateListener interface { + UpdateNeighborTable(entries []NeighborEntry) +} diff --git a/adapter/platform.go b/adapter/platform.go index 95db93c646..12ab82a219 100644 --- a/adapter/platform.go +++ b/adapter/platform.go @@ -36,6 +36,10 @@ type PlatformInterface interface { UsePlatformNotification() bool SendNotification(notification *Notification) error + + UsePlatformNeighborResolver() bool + StartNeighborMonitor(listener NeighborUpdateListener) error + CloseNeighborMonitor(listener NeighborUpdateListener) error } type FindConnectionOwnerRequest struct { diff --git a/adapter/router.go b/adapter/router.go index 3d5310c4ee..82e6881a60 100644 --- a/adapter/router.go +++ b/adapter/router.go @@ -26,6 +26,8 @@ type Router interface { RuleSet(tag string) (RuleSet, bool) Rules() []Rule NeedFindProcess() bool + NeedFindNeighbor() bool + NeighborResolver() NeighborResolver AppendTracker(tracker ConnectionTracker) ResetNetwork() } diff --git a/docs/changelog.md b/docs/changelog.md index 9aaba89474..b13966d616 100644 --- a/docs/changelog.md +++ b/docs/changelog.md @@ -2,6 +2,10 @@ icon: material/alert-decagram --- +#### 1.14.0-alpha.3 + +* Fixes and improvements + #### 1.13.3 * Add OpenWrt and Alpine APK packages to release **1** @@ -26,6 +30,59 @@ from [SagerNet/go](https://github.com/SagerNet/go). See [OCM](/configuration/service/ocm). +#### 1.12.24 + +* Fixes and improvements + +#### 1.14.0-alpha.2 + +* Add OpenWrt and Alpine APK packages to release **1** +* Backport to macOS 10.13 High Sierra **2** +* OCM service: Add WebSocket support for Responses API **3** +* Fixes and improvements + +**1**: + +Alpine APK files use `linux` in the filename to distinguish from OpenWrt APKs which use the `openwrt` prefix: + +- OpenWrt: `sing-box_{version}_openwrt_{architecture}.apk` +- Alpine: `sing-box_{version}_linux_{architecture}.apk` + +**2**: + +Legacy macOS binaries (with `-legacy-macos-10.13` suffix) now support +macOS 10.13 High Sierra, built using Go 1.25 with patches +from [SagerNet/go](https://github.com/SagerNet/go). + +**3**: + +See [OCM](/configuration/service/ocm). + +#### 1.14.0-alpha.1 + +* Add `source_mac_address` and `source_hostname` rule items **1** +* Add `include_mac_address` and `exclude_mac_address` TUN options **2** +* Update NaiveProxy to 145.0.7632.159 **3** +* Fixes and improvements + +**1**: + +New rule items for matching LAN devices by MAC address and hostname via neighbor resolution. +Supported on Linux, macOS, or in graphical clients on Android and macOS. + +See [Route Rule](/configuration/route/rule/#source_mac_address), [DNS Rule](/configuration/dns/rule/#source_mac_address) and [Neighbor Resolution](/configuration/shared/neighbor/). + +**2**: + +Limit or exclude devices from TUN routing by MAC address. +Only supported on Linux with `auto_route` and `auto_redirect` enabled. + +See [TUN](/configuration/inbound/tun/#include_mac_address). + +**3**: + +This is not an official update from NaiveProxy. Instead, it's a Chromium codebase update maintained by Project S. + #### 1.13.2 * Fixes and improvements diff --git a/docs/configuration/dns/rule.md b/docs/configuration/dns/rule.md index 6407e1bf60..97a4a7b3d5 100644 --- a/docs/configuration/dns/rule.md +++ b/docs/configuration/dns/rule.md @@ -2,6 +2,11 @@ icon: material/alert-decagram --- +!!! quote "Changes in sing-box 1.14.0" + + :material-plus: [source_mac_address](#source_mac_address) + :material-plus: [source_hostname](#source_hostname) + !!! quote "Changes in sing-box 1.13.0" :material-plus: [interface_address](#interface_address) @@ -149,6 +154,12 @@ icon: material/alert-decagram "default_interface_address": [ "2000::/3" ], + "source_mac_address": [ + "00:11:22:33:44:55" + ], + "source_hostname": [ + "my-device" + ], "wifi_ssid": [ "My WIFI" ], @@ -408,6 +419,26 @@ Matches network interface (same values as `network_type`) address. Match default interface address. +#### source_mac_address + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup. + +Match source device MAC address. + +#### source_hostname + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup. + +Match source device hostname from DHCP leases. + #### wifi_ssid !!! quote "" diff --git a/docs/configuration/dns/rule.zh.md b/docs/configuration/dns/rule.zh.md index c46bc4752c..ed2e31daff 100644 --- a/docs/configuration/dns/rule.zh.md +++ b/docs/configuration/dns/rule.zh.md @@ -2,6 +2,11 @@ icon: material/alert-decagram --- +!!! quote "sing-box 1.14.0 中的更改" + + :material-plus: [source_mac_address](#source_mac_address) + :material-plus: [source_hostname](#source_hostname) + !!! quote "sing-box 1.13.0 中的更改" :material-plus: [interface_address](#interface_address) @@ -149,6 +154,12 @@ icon: material/alert-decagram "default_interface_address": [ "2000::/3" ], + "source_mac_address": [ + "00:11:22:33:44:55" + ], + "source_hostname": [ + "my-device" + ], "wifi_ssid": [ "My WIFI" ], @@ -407,6 +418,26 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`. 匹配默认接口地址。 +#### source_mac_address + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。 + +匹配源设备 MAC 地址。 + +#### source_hostname + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。 + +匹配源设备从 DHCP 租约获取的主机名。 + #### wifi_ssid !!! quote "" diff --git a/docs/configuration/inbound/tun.md b/docs/configuration/inbound/tun.md index 74d02dc933..5a2f58d3db 100644 --- a/docs/configuration/inbound/tun.md +++ b/docs/configuration/inbound/tun.md @@ -134,6 +134,12 @@ icon: material/new-box "exclude_package": [ "com.android.captiveportallogin" ], + "include_mac_address": [ + "00:11:22:33:44:55" + ], + "exclude_mac_address": [ + "66:77:88:99:aa:bb" + ], "platform": { "http_proxy": { "enabled": false, @@ -560,6 +566,30 @@ Limit android packages in route. Exclude android packages in route. +#### include_mac_address + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux with `auto_route` and `auto_redirect` enabled. + +Limit MAC addresses in route. Not limited by default. + +Conflict with `exclude_mac_address`. + +#### exclude_mac_address + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux with `auto_route` and `auto_redirect` enabled. + +Exclude MAC addresses in route. + +Conflict with `include_mac_address`. + #### platform Platform-specific settings, provided by client applications. diff --git a/docs/configuration/inbound/tun.zh.md b/docs/configuration/inbound/tun.zh.md index eaf5ff49c3..a41e5ae9ff 100644 --- a/docs/configuration/inbound/tun.zh.md +++ b/docs/configuration/inbound/tun.zh.md @@ -2,6 +2,11 @@ icon: material/new-box --- +!!! quote "sing-box 1.14.0 中的更改" + + :material-plus: [include_mac_address](#include_mac_address) + :material-plus: [exclude_mac_address](#exclude_mac_address) + !!! quote "sing-box 1.13.3 中的更改" :material-alert: [strict_route](#strict_route) @@ -130,6 +135,12 @@ icon: material/new-box "exclude_package": [ "com.android.captiveportallogin" ], + "include_mac_address": [ + "00:11:22:33:44:55" + ], + "exclude_mac_address": [ + "66:77:88:99:aa:bb" + ], "platform": { "http_proxy": { "enabled": false, @@ -543,6 +554,30 @@ TCP/IP 栈。 排除路由的 Android 应用包名。 +#### include_mac_address + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux，且需要 `auto_route` 和 `auto_redirect` 已启用。 + +限制被路由的 MAC 地址。默认不限制。 + +与 `exclude_mac_address` 冲突。 + +#### exclude_mac_address + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux，且需要 `auto_route` 和 `auto_redirect` 已启用。 + +排除路由的 MAC 地址。 + +与 `include_mac_address` 冲突。 + #### platform 平台特定的设置，由客户端应用提供。 diff --git a/docs/configuration/route/index.md b/docs/configuration/route/index.md index 1fc9bfd231..40104b619e 100644 --- a/docs/configuration/route/index.md +++ b/docs/configuration/route/index.md @@ -4,6 +4,11 @@ icon: material/alert-decagram # Route +!!! quote "Changes in sing-box 1.14.0" + + :material-plus: [find_neighbor](#find_neighbor) + :material-plus: [dhcp_lease_files](#dhcp_lease_files) + !!! quote "Changes in sing-box 1.12.0" :material-plus: [default_domain_resolver](#default_domain_resolver) @@ -35,6 +40,9 @@ icon: material/alert-decagram "override_android_vpn": false, "default_interface": "", "default_mark": 0, + "find_process": false, + "find_neighbor": false, + "dhcp_lease_files": [], "default_domain_resolver": "", // or {} "default_network_strategy": "", "default_network_type": [], @@ -107,6 +115,38 @@ Set routing mark by default. Takes no effect if `outbound.routing_mark` is set. +#### find_process + +!!! quote "" + + Only supported on Linux, Windows, and macOS. + +Enable process search for logging when no `process_name`, `process_path`, `package_name`, `user` or `user_id` rules exist. + +#### find_neighbor + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux and macOS. + +Enable neighbor resolution for logging when no `source_mac_address` or `source_hostname` rules exist. + +See [Neighbor Resolution](/configuration/shared/neighbor/) for setup. + +#### dhcp_lease_files + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux and macOS. + +Custom DHCP lease file paths for hostname and MAC address resolution. + +Automatically detected from common DHCP servers (dnsmasq, odhcpd, ISC dhcpd, Kea) if empty. + #### default_domain_resolver !!! question "Since sing-box 1.12.0" diff --git a/docs/configuration/route/index.zh.md b/docs/configuration/route/index.zh.md index 1a50d3e3b5..4977b084e2 100644 --- a/docs/configuration/route/index.zh.md +++ b/docs/configuration/route/index.zh.md @@ -4,6 +4,11 @@ icon: material/alert-decagram # 路由 +!!! quote "sing-box 1.14.0 中的更改" + + :material-plus: [find_neighbor](#find_neighbor) + :material-plus: [dhcp_lease_files](#dhcp_lease_files) + !!! quote "sing-box 1.12.0 中的更改" :material-plus: [default_domain_resolver](#default_domain_resolver) @@ -37,6 +42,9 @@ icon: material/alert-decagram "override_android_vpn": false, "default_interface": "", "default_mark": 0, + "find_process": false, + "find_neighbor": false, + "dhcp_lease_files": [], "default_network_strategy": "", "default_fallback_delay": "" } @@ -106,6 +114,38 @@ icon: material/alert-decagram 如果设置了 `outbound.routing_mark` 设置，则不生效。 +#### find_process + +!!! quote "" + + 仅支持 Linux、Windows 和 macOS。 + +在没有 `process_name`、`process_path`、`package_name`、`user` 或 `user_id` 规则时启用进程搜索以输出日志。 + +#### find_neighbor + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux 和 macOS。 + +在没有 `source_mac_address` 或 `source_hostname` 规则时启用邻居解析以输出日志。 + +参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。 + +#### dhcp_lease_files + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux 和 macOS。 + +用于主机名和 MAC 地址解析的自定义 DHCP 租约文件路径。 + +为空时自动从常见 DHCP 服务器（dnsmasq、odhcpd、ISC dhcpd、Kea）检测。 + #### default_domain_resolver !!! question "自 sing-box 1.12.0 起" diff --git a/docs/configuration/route/rule.md b/docs/configuration/route/rule.md index 31f768fe23..767e9ef756 100644 --- a/docs/configuration/route/rule.md +++ b/docs/configuration/route/rule.md @@ -2,6 +2,11 @@ icon: material/new-box --- +!!! quote "Changes in sing-box 1.14.0" + + :material-plus: [source_mac_address](#source_mac_address) + :material-plus: [source_hostname](#source_hostname) + !!! quote "Changes in sing-box 1.13.0" :material-plus: [interface_address](#interface_address) @@ -159,6 +164,12 @@ icon: material/new-box "tailscale", "wireguard" ], + "source_mac_address": [ + "00:11:22:33:44:55" + ], + "source_hostname": [ + "my-device" + ], "rule_set": [ "geoip-cn", "geosite-cn" @@ -449,6 +460,26 @@ Match specified outbounds' preferred routes. | `tailscale` | Match MagicDNS domains and peers' allowed IPs | | `wireguard` | Match peers's allowed IPs | +#### source_mac_address + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup. + +Match source device MAC address. + +#### source_hostname + +!!! question "Since sing-box 1.14.0" + +!!! quote "" + + Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup. + +Match source device hostname from DHCP leases. + #### rule_set !!! question "Since sing-box 1.8.0" diff --git a/docs/configuration/route/rule.zh.md b/docs/configuration/route/rule.zh.md index c883801888..bf13785972 100644 --- a/docs/configuration/route/rule.zh.md +++ b/docs/configuration/route/rule.zh.md @@ -2,6 +2,11 @@ icon: material/new-box --- +!!! quote "sing-box 1.14.0 中的更改" + + :material-plus: [source_mac_address](#source_mac_address) + :material-plus: [source_hostname](#source_hostname) + !!! quote "sing-box 1.13.0 中的更改" :material-plus: [interface_address](#interface_address) @@ -157,6 +162,12 @@ icon: material/new-box "tailscale", "wireguard" ], + "source_mac_address": [ + "00:11:22:33:44:55" + ], + "source_hostname": [ + "my-device" + ], "rule_set": [ "geoip-cn", "geosite-cn" @@ -447,6 +458,26 @@ icon: material/new-box | `tailscale` | 匹配 MagicDNS 域名和对端的 allowed IPs | | `wireguard` | 匹配对端的 allowed IPs | +#### source_mac_address + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。 + +匹配源设备 MAC 地址。 + +#### source_hostname + +!!! question "自 sing-box 1.14.0 起" + +!!! quote "" + + 仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。 + +匹配源设备从 DHCP 租约获取的主机名。 + #### rule_set !!! question "自 sing-box 1.8.0 起" diff --git a/docs/configuration/shared/neighbor.md b/docs/configuration/shared/neighbor.md new file mode 100644 index 0000000000..c67d995ebe --- /dev/null +++ b/docs/configuration/shared/neighbor.md @@ -0,0 +1,49 @@ +--- +icon: material/lan +--- + +# Neighbor Resolution + +Match LAN devices by MAC address and hostname using +[`source_mac_address`](/configuration/route/rule/#source_mac_address) and +[`source_hostname`](/configuration/route/rule/#source_hostname) rule items. + +Neighbor resolution is automatically enabled when these rule items exist. +Use [`route.find_neighbor`](/configuration/route/#find_neighbor) to force enable it for logging without rules. + +## Linux + +Works natively. No special setup required. + +Hostname resolution requires DHCP lease files, +automatically detected from common DHCP servers (dnsmasq, odhcpd, ISC dhcpd, Kea). +Custom paths can be set via [`route.dhcp_lease_files`](/configuration/route/#dhcp_lease_files). + +## Android + +!!! quote "" + + Only supported in graphical clients. + +Requires Android 11 or above and ROOT. + +Must use [VPNHotspot](https://github.com/Mygod/VPNHotspot) to share the VPN connection. +ROM built-in features like "Use VPN for connected devices" can share VPN +but cannot provide MAC address or hostname information. + +Set **IP Masquerade Mode** to **None** in VPNHotspot settings. + +Only route/DNS rules are supported. TUN include/exclude routes are not supported. + +### Hostname Visibility + +Hostname is only visible in sing-box if it is visible in VPNHotspot. +For Apple devices, change **Private Wi-Fi Address** from **Rotating** to **Fixed** in the Wi-Fi settings +of the connected network. Non-Apple devices are always visible. + +## macOS + +Requires the standalone version (macOS system extension). +The App Store version can share the VPN as a hotspot but does not support MAC address or hostname reading. + +See [VPN Hotspot](/manual/misc/vpn-hotspot/#macos) for Internet Sharing setup. diff --git a/docs/configuration/shared/neighbor.zh.md b/docs/configuration/shared/neighbor.zh.md new file mode 100644 index 0000000000..96297fcb57 --- /dev/null +++ b/docs/configuration/shared/neighbor.zh.md @@ -0,0 +1,49 @@ +--- +icon: material/lan +--- + +# 邻居解析 + +通过 +[`source_mac_address`](/configuration/route/rule/#source_mac_address) 和 +[`source_hostname`](/configuration/route/rule/#source_hostname) 规则项匹配局域网设备的 MAC 地址和主机名。 + +当这些规则项存在时，邻居解析自动启用。 +使用 [`route.find_neighbor`](/configuration/route/#find_neighbor) 可在没有规则时强制启用以输出日志。 + +## Linux + +原生支持，无需特殊设置。 + +主机名解析需要 DHCP 租约文件， +自动从常见 DHCP 服务器（dnsmasq、odhcpd、ISC dhcpd、Kea）检测。 +可通过 [`route.dhcp_lease_files`](/configuration/route/#dhcp_lease_files) 设置自定义路径。 + +## Android + +!!! quote "" + + 仅在图形客户端中支持。 + +需要 Android 11 或以上版本和 ROOT。 + +必须使用 [VPNHotspot](https://github.com/Mygod/VPNHotspot) 共享 VPN 连接。 +ROM 自带的「通过 VPN 共享连接」等功能可以共享 VPN， +但无法提供 MAC 地址或主机名信息。 + +在 VPNHotspot 设置中将 **IP 遮掩模式** 设为 **无**。 + +仅支持路由/DNS 规则。不支持 TUN 的 include/exclude 路由。 + +### 设备可见性 + +MAC 地址和主机名仅在 VPNHotspot 中可见时 sing-box 才能读取。 +对于 Apple 设备，需要在所连接网络的 Wi-Fi 设置中将**私有无线局域网地址**从**轮替**改为**固定**。 +非 Apple 设备始终可见。 + +## macOS + +需要独立版本（macOS 系统扩展）。 +App Store 版本可以共享 VPN 热点但不支持 MAC 地址或主机名读取。 + +参阅 [VPN 热点](/manual/misc/vpn-hotspot/#macos) 了解互联网共享设置。 diff --git a/experimental/libbox/config.go b/experimental/libbox/config.go index 122425d293..54369bf770 100644 --- a/experimental/libbox/config.go +++ b/experimental/libbox/config.go @@ -144,6 +144,18 @@ func (s *platformInterfaceStub) SendNotification(notification *adapter.Notificat return nil } +func (s *platformInterfaceStub) UsePlatformNeighborResolver() bool { + return false +} + +func (s *platformInterfaceStub) StartNeighborMonitor(listener adapter.NeighborUpdateListener) error { + return os.ErrInvalid +} + +func (s *platformInterfaceStub) CloseNeighborMonitor(listener adapter.NeighborUpdateListener) error { + return nil +} + func (s *platformInterfaceStub) UsePlatformLocalDNSTransport() bool { return false } diff --git a/experimental/libbox/neighbor.go b/experimental/libbox/neighbor.go new file mode 100644 index 0000000000..e38aa8023f --- /dev/null +++ b/experimental/libbox/neighbor.go @@ -0,0 +1,53 @@ +package libbox + +import ( + "net" + "net/netip" +) + +type NeighborEntry struct { + Address string + MacAddress string + Hostname string +} + +type NeighborEntryIterator interface { + Next() *NeighborEntry + HasNext() bool +} + +type NeighborSubscription struct { + done chan struct{} +} + +func (s *NeighborSubscription) Close() { + close(s.done) +} + +func tableToIterator(table map[netip.Addr]net.HardwareAddr) NeighborEntryIterator { + entries := make([]*NeighborEntry, 0, len(table)) + for address, mac := range table { + entries = append(entries, &NeighborEntry{ + Address: address.String(), + MacAddress: mac.String(), + }) + } + return &neighborEntryIterator{entries} +} + +type neighborEntryIterator struct { + entries []*NeighborEntry +} + +func (i *neighborEntryIterator) HasNext() bool { + return len(i.entries) > 0 +} + +func (i *neighborEntryIterator) Next() *NeighborEntry { + if len(i.entries) == 0 { + return nil + } + entry := i.entries[0] + i.entries = i.entries[1:] + return entry +} diff --git a/experimental/libbox/neighbor_darwin.go b/experimental/libbox/neighbor_darwin.go new file mode 100644 index 0000000000..d7484a69b4 --- /dev/null +++ b/experimental/libbox/neighbor_darwin.go @@ -0,0 +1,123 @@ +//go:build darwin + +package libbox + +import ( + "net" + "net/netip" + "os" + "slices" + "time" + + "github.com/sagernet/sing-box/route" + "github.com/sagernet/sing/common/buf" + E "github.com/sagernet/sing/common/exceptions" + + xroute "golang.org/x/net/route" + "golang.org/x/sys/unix" +) + +func SubscribeNeighborTable(listener NeighborUpdateListener) (*NeighborSubscription, error) { + entries, err := route.ReadNeighborEntries() + if err != nil { + return nil, E.Cause(err, "initial neighbor dump") + } + table := make(map[netip.Addr]net.HardwareAddr) + for _, entry := range entries { + table[entry.Address] = entry.MACAddress + } + listener.UpdateNeighborTable(tableToIterator(table)) + routeSocket, err := unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW, 0) + if err != nil { + return nil, E.Cause(err, "open route socket") + } + err = unix.SetNonblock(routeSocket, true) + if err != nil { + unix.Close(routeSocket) + return nil, E.Cause(err, "set route socket nonblock") + } + subscription := &NeighborSubscription{ + done: make(chan struct{}), + } + go subscription.loop(listener, routeSocket, table) + return subscription, nil +} + +func (s *NeighborSubscription) loop(listener NeighborUpdateListener, routeSocket int, table map[netip.Addr]net.HardwareAddr) { + routeSocketFile := os.NewFile(uintptr(routeSocket), "route") + defer routeSocketFile.Close() + buffer := buf.NewPacket() + defer buffer.Release() + for { + select { + case <-s.done: + return + default: + } + tv := unix.NsecToTimeval(int64(3 * time.Second)) + _ = unix.SetsockoptTimeval(routeSocket, unix.SOL_SOCKET, unix.SO_RCVTIMEO, &tv) + n, err := routeSocketFile.Read(buffer.FreeBytes()) + if err != nil { + if nerr, ok := err.(net.Error); ok && nerr.Timeout() { + continue + } + select { + case <-s.done: + return + default: + } + continue + } + messages, err := xroute.ParseRIB(xroute.RIBTypeRoute, buffer.FreeBytes()[:n]) + if err != nil { + continue + } + changed := false + for _, message := range messages { + routeMessage, isRouteMessage := message.(*xroute.RouteMessage) + if !isRouteMessage { + continue + } + if routeMessage.Flags&unix.RTF_LLINFO == 0 { + continue + } + address, mac, isDelete, ok := route.ParseRouteNeighborMessage(routeMessage) + if !ok { + continue + } + if isDelete { + if _, exists := table[address]; exists { + delete(table, address) + changed = true + } + } else { + existing, exists := table[address] + if !exists || !slices.Equal(existing, mac) { + table[address] = mac + changed = true + } + } + } + if changed { + listener.UpdateNeighborTable(tableToIterator(table)) + } + } +} + +func ReadBootpdLeases() NeighborEntryIterator { + leaseIPToMAC, ipToHostname, macToHostname := route.ReloadLeaseFiles([]string{"/var/db/dhcpd_leases"}) + entries := make([]*NeighborEntry, 0, len(leaseIPToMAC)) + for address, mac := range leaseIPToMAC { + entry := &NeighborEntry{ + Address: address.String(), + MacAddress: mac.String(), + } + hostname, found := ipToHostname[address] + if !found { + hostname = macToHostname[mac.String()] + } + entry.Hostname = hostname + entries = append(entries, entry) + } + return &neighborEntryIterator{entries} +} diff --git a/experimental/libbox/neighbor_linux.go b/experimental/libbox/neighbor_linux.go new file mode 100644 index 0000000000..ae10bdd2ee --- /dev/null +++ b/experimental/libbox/neighbor_linux.go @@ -0,0 +1,88 @@ +//go:build linux + +package libbox + +import ( + "net" + "net/netip" + "slices" + "time" + + "github.com/sagernet/sing-box/route" + E "github.com/sagernet/sing/common/exceptions" + + "github.com/mdlayher/netlink" + "golang.org/x/sys/unix" +) + +func SubscribeNeighborTable(listener NeighborUpdateListener) (*NeighborSubscription, error) { + entries, err := route.ReadNeighborEntries() + if err != nil { + return nil, E.Cause(err, "initial neighbor dump") + } + table := make(map[netip.Addr]net.HardwareAddr) + for _, entry := range entries { + table[entry.Address] = entry.MACAddress + } + listener.UpdateNeighborTable(tableToIterator(table)) + connection, err := netlink.Dial(unix.NETLINK_ROUTE, &netlink.Config{ + Groups: 1 << (unix.RTNLGRP_NEIGH - 1), + }) + if err != nil { + return nil, E.Cause(err, "subscribe neighbor updates") + } + subscription := &NeighborSubscription{ + done: make(chan struct{}), + } + go subscription.loop(listener, connection, table) + return subscription, nil +} + +func (s *NeighborSubscription) loop(listener NeighborUpdateListener, connection *netlink.Conn, table map[netip.Addr]net.HardwareAddr) { + defer connection.Close() + for { + select { + case <-s.done: + return + default: + } + err := connection.SetReadDeadline(time.Now().Add(3 * time.Second)) + if err != nil { + return + } + messages, err := connection.Receive() + if err != nil { + if nerr, ok := err.(net.Error); ok && nerr.Timeout() { + continue + } + select { + case <-s.done: + return + default: + } + continue + } + changed := false + for _, message := range messages { + address, mac, isDelete, ok := route.ParseNeighborMessage(message) + if !ok { + continue + } + if isDelete { + if _, exists := table[address]; exists { + delete(table, address) + changed = true + } + } else { + existing, exists := table[address] + if !exists || !slices.Equal(existing, mac) { + table[address] = mac + changed = true + } + } + } + if changed { + listener.UpdateNeighborTable(tableToIterator(table)) + } + } +} diff --git a/experimental/libbox/neighbor_stub.go b/experimental/libbox/neighbor_stub.go new file mode 100644 index 0000000000..d465bc7bb0 --- /dev/null +++ b/experimental/libbox/neighbor_stub.go @@ -0,0 +1,9 @@ +//go:build !linux && !darwin + +package libbox + +import "os" + +func SubscribeNeighborTable(_ NeighborUpdateListener) (*NeighborSubscription, error) { + return nil, os.ErrInvalid +} diff --git a/experimental/libbox/platform.go b/experimental/libbox/platform.go index 63c54ccf2c..d2cac4cf68 100644 --- a/experimental/libbox/platform.go +++ b/experimental/libbox/platform.go @@ -21,6 +21,13 @@ type PlatformInterface interface { SystemCertificates() StringIterator ClearDNSCache() SendNotification(notification *Notification) error + StartNeighborMonitor(listener NeighborUpdateListener) error + CloseNeighborMonitor(listener NeighborUpdateListener) error + RegisterMyInterface(name string) +} + +type NeighborUpdateListener interface { + UpdateNeighborTable(entries NeighborEntryIterator) } type ConnectionOwner struct { diff --git a/experimental/libbox/service.go b/experimental/libbox/service.go index 3a13f6d169..b521f0f8e9 100644 --- a/experimental/libbox/service.go +++ b/experimental/libbox/service.go @@ -78,6 +78,7 @@ func (w *platformInterfaceWrapper) OpenInterface(options *tun.Options, platformO } options.FileDescriptor = dupFd w.myTunName = options.Name + w.iif.RegisterMyInterface(options.Name) return tun.New(*options) } @@ -220,6 +221,46 @@ func (w *platformInterfaceWrapper) SendNotification(notification *adapter.Notifi return w.iif.SendNotification((*Notification)(notification)) } +func (w *platformInterfaceWrapper) UsePlatformNeighborResolver() bool { + return true +} + +func (w *platformInterfaceWrapper) StartNeighborMonitor(listener adapter.NeighborUpdateListener) error { + return w.iif.StartNeighborMonitor(&neighborUpdateListenerWrapper{listener: listener}) +} + +func (w *platformInterfaceWrapper) CloseNeighborMonitor(listener adapter.NeighborUpdateListener) error { + return w.iif.CloseNeighborMonitor(nil) +} + +type neighborUpdateListenerWrapper struct { + listener adapter.NeighborUpdateListener +} + +func (w *neighborUpdateListenerWrapper) UpdateNeighborTable(entries NeighborEntryIterator) { + var result []adapter.NeighborEntry + for entries.HasNext() { + entry := entries.Next() + if entry == nil { + continue + } + address, err := netip.ParseAddr(entry.Address) + if err != nil { + continue + } + macAddress, err := net.ParseMAC(entry.MacAddress) + if err != nil { + continue + } + result = append(result, adapter.NeighborEntry{ + Address: address, + MACAddress: macAddress, + Hostname: entry.Hostname, + }) + } + w.listener.UpdateNeighborTable(result) +} + func AvailablePort(startPort int32) (int32, error) { for port := int(startPort); ; port++ { if port > 65535 { diff --git a/go.mod b/go.mod index 8b1c752b07..f07bbcaf3a 100644 --- a/go.mod +++ b/go.mod @@ -14,11 +14,13 @@ require ( github.com/godbus/dbus/v5 v5.2.2 github.com/gofrs/uuid/v5 v5.4.0 github.com/insomniacslk/dhcp v0.0.0-20260220084031-5adc3eb26f91 + github.com/jsimonetti/rtnetlink v1.4.0 github.com/keybase/go-keychain v0.0.1 github.com/libdns/acmedns v0.5.0 github.com/libdns/alidns v1.0.6 github.com/libdns/cloudflare v0.2.2 github.com/logrusorgru/aurora v2.0.3+incompatible + github.com/mdlayher/netlink v1.9.0 github.com/metacubex/utls v1.8.4 github.com/mholt/acmez/v3 v3.1.6 github.com/miekg/dns v1.1.72 @@ -27,8 +29,8 @@ require ( github.com/sagernet/asc-go v0.0.0-20241217030726-d563060fe4e1 github.com/sagernet/bbolt v0.0.0-20231014093535-ea5cb2fe9f0a github.com/sagernet/cors v1.2.1 - github.com/sagernet/cronet-go v0.0.0-20260309102448-2fef65f9dba9 - github.com/sagernet/cronet-go/all v0.0.0-20260309102448-2fef65f9dba9 + github.com/sagernet/cronet-go v0.0.0-20260309100020-c128886ff3fc + github.com/sagernet/cronet-go/all v0.0.0-20260309100020-c128886ff3fc github.com/sagernet/fswatch v0.1.1 github.com/sagernet/gomobile v0.1.12 github.com/sagernet/gvisor v0.0.0-20250811.0-sing-box-mod.1 @@ -39,7 +41,7 @@ require ( github.com/sagernet/sing-shadowsocks v0.2.8 github.com/sagernet/sing-shadowsocks2 v0.2.1 github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11 - github.com/sagernet/sing-tun v0.8.3 + github.com/sagernet/sing-tun v0.8.4-0.20260315091454-bbe21100c226 github.com/sagernet/sing-vmess v0.2.8-0.20250909125414-3aed155119a1 github.com/sagernet/smux v1.5.50-sing-box-mod.1 github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.6.0.20260311131347-f88b27eeb76e @@ -56,7 +58,7 @@ require ( golang.org/x/net v0.50.0 golang.org/x/sys v0.41.0 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20241231184526-a9ab2273dd10 - google.golang.org/grpc v1.79.1 + google.golang.org/grpc v1.79.3 google.golang.org/protobuf v1.36.11 howett.net/plist v1.0.1 ) @@ -92,11 +94,9 @@ require ( github.com/hashicorp/yamux v0.1.2 // indirect github.com/hdevalence/ed25519consensus v0.2.0 // indirect github.com/inconshreveable/mousetrap v1.1.0 // indirect - github.com/jsimonetti/rtnetlink v1.4.0 // indirect github.com/klauspost/compress v1.18.0 // indirect github.com/klauspost/cpuid/v2 v2.3.0 // indirect github.com/libdns/libdns v1.1.1 // indirect - github.com/mdlayher/netlink v1.9.0 // indirect github.com/mdlayher/socket v0.5.1 // indirect github.com/mitchellh/go-ps v1.0.0 // indirect github.com/pierrec/lz4/v4 v4.1.21 // indirect diff --git a/go.sum b/go.sum index 222aace808..c6942f66d5 100644 --- a/go.sum +++ b/go.sum @@ -162,10 +162,10 @@ github.com/sagernet/bbolt v0.0.0-20231014093535-ea5cb2fe9f0a h1:+NkI2670SQpQWvkk github.com/sagernet/bbolt v0.0.0-20231014093535-ea5cb2fe9f0a/go.mod h1:63s7jpZqcDAIpj8oI/1v4Izok+npJOHACFCU6+huCkM= github.com/sagernet/cors v1.2.1 h1:Cv5Z8y9YSD6Gm+qSpNrL3LO4lD3eQVvbFYJSG7JCMHQ= github.com/sagernet/cors v1.2.1/go.mod h1:O64VyOjjhrkLmQIjF4KGRrJO/5dVXFdpEmCW/eISRAI= -github.com/sagernet/cronet-go v0.0.0-20260309102448-2fef65f9dba9 h1:xq5Yr10jXEppD3cnGjE3WENaB6D0YsZu6KptZ8d3054= -github.com/sagernet/cronet-go v0.0.0-20260309102448-2fef65f9dba9/go.mod h1:hwFHBEjjthyEquDULbr4c4ucMedp8Drb6Jvm2kt/0Bw= -github.com/sagernet/cronet-go/all v0.0.0-20260309102448-2fef65f9dba9 h1:uxQyy6Y/boOuecVA66tf79JgtoRGfeDJcfYZZLKVA5E= -github.com/sagernet/cronet-go/all v0.0.0-20260309102448-2fef65f9dba9/go.mod h1:Xm6cCvs0/twozC1JYNq0sVlOVmcSGzV7YON1XGcD97w= +github.com/sagernet/cronet-go v0.0.0-20260309100020-c128886ff3fc h1:YK7PwJT0irRAEui9ASdXSxcE2BOVQipWMF/A1Ogt+7c= +github.com/sagernet/cronet-go v0.0.0-20260309100020-c128886ff3fc/go.mod h1:hwFHBEjjthyEquDULbr4c4ucMedp8Drb6Jvm2kt/0Bw= +github.com/sagernet/cronet-go/all v0.0.0-20260309100020-c128886ff3fc h1:EJPHOqk23IuBsTjXK9OXqkNxPbKOBWKRmviQoCcriAs= +github.com/sagernet/cronet-go/all v0.0.0-20260309100020-c128886ff3fc/go.mod h1:8aty0RW96DrJSMWXO6bRPMBJEjuqq5JWiOIi4bCRzFA= github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260309101654-0cbdcfddded9 h1:Qi0IKBpoPP3qZqIXuOKMsT2dv+l/MLWMyBHDMLRw2EA= github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260309101654-0cbdcfddded9/go.mod h1:XXDwdjX/T8xftoeJxQmbBoYXZp8MAPFR2CwbFuTpEtw= github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260309101654-0cbdcfddded9 h1:p+wCMjOhj46SpSD/AJeTGgkCcbyA76FyH631XZatyU8= @@ -248,8 +248,8 @@ github.com/sagernet/sing-shadowsocks2 v0.2.1 h1:dWV9OXCeFPuYGHb6IRqlSptVnSzOelnq github.com/sagernet/sing-shadowsocks2 v0.2.1/go.mod h1:RnXS0lExcDAovvDeniJ4IKa2IuChrdipolPYWBv9hWQ= github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11 h1:tK+75l64tm9WvEFrYRE1t0YxoFdWQqw/h7Uhzj0vJ+w= github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11/go.mod h1:sWqKnGlMipCHaGsw1sTTlimyUpgzP4WP3pjhCsYt9oA= -github.com/sagernet/sing-tun v0.8.3 h1:mozxmuIoRhFdVHnheenLpBaammVj7bZPcnkApaYKDPY= -github.com/sagernet/sing-tun v0.8.3/go.mod h1:pLCo4o+LacXEzz0bhwhJkKBjLlKOGPBNOAZ97ZVZWzs= +github.com/sagernet/sing-tun v0.8.4-0.20260315091454-bbe21100c226 h1:Shy/fsm+pqVq6OkBAWPaOmOiPT/AwoRxQLiV1357Y0Y= +github.com/sagernet/sing-tun v0.8.4-0.20260315091454-bbe21100c226/go.mod h1:pLCo4o+LacXEzz0bhwhJkKBjLlKOGPBNOAZ97ZVZWzs= github.com/sagernet/sing-vmess v0.2.8-0.20250909125414-3aed155119a1 h1:aSwUNYUkVyVvdmBSufR8/nRFonwJeKSIROxHcm5br9o= github.com/sagernet/sing-vmess v0.2.8-0.20250909125414-3aed155119a1/go.mod h1:P11scgTxMxVVQ8dlM27yNm3Cro40mD0+gHbnqrNGDuY= github.com/sagernet/smux v1.5.50-sing-box-mod.1 h1:XkJcivBC9V4wBjiGXIXZ229aZCU1hzcbp6kSkkyQ478= @@ -383,8 +383,8 @@ gonum.org/v1/gonum v0.16.0 h1:5+ul4Swaf3ESvrOnidPp4GZbzf0mxVQpDCYUQE7OJfk= gonum.org/v1/gonum v0.16.0/go.mod h1:fef3am4MQ93R2HHpKnLk4/Tbh/s0+wqD5nfa6Pnwy4E= google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217 h1:gRkg/vSppuSQoDjxyiGfN4Upv/h/DQmIR10ZU8dh4Ww= google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217/go.mod h1:7i2o+ce6H/6BluujYR+kqX3GKH+dChPTQU19wjRPiGk= -google.golang.org/grpc v1.79.1 h1:zGhSi45ODB9/p3VAawt9a+O/MULLl9dpizzNNpq7flY= -google.golang.org/grpc v1.79.1/go.mod h1:KmT0Kjez+0dde/v2j9vzwoAScgEPx/Bw1CYChhHLrHQ= +google.golang.org/grpc v1.79.3 h1:sybAEdRIEtvcD68Gx7dmnwjZKlyfuc61Dyo9pGXXkKE= +google.golang.org/grpc v1.79.3/go.mod h1:KmT0Kjez+0dde/v2j9vzwoAScgEPx/Bw1CYChhHLrHQ= google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE= google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= diff --git a/mkdocs.yml b/mkdocs.yml index e295926610..5f95842a5d 100644 --- a/mkdocs.yml +++ b/mkdocs.yml @@ -129,6 +129,7 @@ nav: - UDP over TCP: configuration/shared/udp-over-tcp.md - TCP Brutal: configuration/shared/tcp-brutal.md - Wi-Fi State: configuration/shared/wifi-state.md + - Neighbor Resolution: configuration/shared/neighbor.md - Endpoint: - configuration/endpoint/index.md - WireGuard: configuration/endpoint/wireguard.md diff --git a/option/route.go b/option/route.go index f4b6539156..0c3e576d13 100644 --- a/option/route.go +++ b/option/route.go @@ -9,6 +9,8 @@ type RouteOptions struct { RuleSet []RuleSet `json:"rule_set,omitempty"` Final string `json:"final,omitempty"` FindProcess bool `json:"find_process,omitempty"` + FindNeighbor bool `json:"find_neighbor,omitempty"` + DHCPLeaseFiles badoption.Listable[string] `json:"dhcp_lease_files,omitempty"` AutoDetectInterface bool `json:"auto_detect_interface,omitempty"` OverrideAndroidVPN bool `json:"override_android_vpn,omitempty"` DefaultInterface string `json:"default_interface,omitempty"` diff --git a/option/rule.go b/option/rule.go index 3e7fd8771b..b792ccf4b2 100644 --- a/option/rule.go +++ b/option/rule.go @@ -103,6 +103,8 @@ type RawDefaultRule struct { InterfaceAddress *badjson.TypedMap[string, badoption.Listable[*badoption.Prefixable]] `json:"interface_address,omitempty"` NetworkInterfaceAddress *badjson.TypedMap[InterfaceType, badoption.Listable[*badoption.Prefixable]] `json:"network_interface_address,omitempty"` DefaultInterfaceAddress badoption.Listable[*badoption.Prefixable] `json:"default_interface_address,omitempty"` + SourceMACAddress badoption.Listable[string] `json:"source_mac_address,omitempty"` + SourceHostname badoption.Listable[string] `json:"source_hostname,omitempty"` PreferredBy badoption.Listable[string] `json:"preferred_by,omitempty"` RuleSet badoption.Listable[string] `json:"rule_set,omitempty"` RuleSetIPCIDRMatchSource bool `json:"rule_set_ip_cidr_match_source,omitempty"` diff --git a/option/rule_dns.go b/option/rule_dns.go index dbc1657898..880b96ac54 100644 --- a/option/rule_dns.go +++ b/option/rule_dns.go @@ -106,6 +106,8 @@ type RawDefaultDNSRule struct { InterfaceAddress *badjson.TypedMap[string, badoption.Listable[*badoption.Prefixable]] `json:"interface_address,omitempty"` NetworkInterfaceAddress *badjson.TypedMap[InterfaceType, badoption.Listable[*badoption.Prefixable]] `json:"network_interface_address,omitempty"` DefaultInterfaceAddress badoption.Listable[*badoption.Prefixable] `json:"default_interface_address,omitempty"` + SourceMACAddress badoption.Listable[string] `json:"source_mac_address,omitempty"` + SourceHostname badoption.Listable[string] `json:"source_hostname,omitempty"` RuleSet badoption.Listable[string] `json:"rule_set,omitempty"` RuleSetIPCIDRMatchSource bool `json:"rule_set_ip_cidr_match_source,omitempty"` RuleSetIPCIDRAcceptEmpty bool `json:"rule_set_ip_cidr_accept_empty,omitempty"` diff --git a/option/tun.go b/option/tun.go index 72b6e456ba..fda028b69e 100644 --- a/option/tun.go +++ b/option/tun.go @@ -39,6 +39,8 @@ type TunInboundOptions struct { IncludeAndroidUser badoption.Listable[int] `json:"include_android_user,omitempty"` IncludePackage badoption.Listable[string] `json:"include_package,omitempty"` ExcludePackage badoption.Listable[string] `json:"exclude_package,omitempty"` + IncludeMACAddress badoption.Listable[string] `json:"include_mac_address,omitempty"` + ExcludeMACAddress badoption.Listable[string] `json:"exclude_mac_address,omitempty"` UDPTimeout UDPTimeoutCompat `json:"udp_timeout,omitempty"` Stack string `json:"stack,omitempty"` Platform *TunPlatformOptions `json:"platform,omitempty"` diff --git a/protocol/tun/inbound.go b/protocol/tun/inbound.go index df9344b817..6f10849321 100644 --- a/protocol/tun/inbound.go +++ b/protocol/tun/inbound.go @@ -156,6 +156,22 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo if nfQueue == 0 { nfQueue = tun.DefaultAutoRedirectNFQueue } + var includeMACAddress []net.HardwareAddr + for i, macString := range options.IncludeMACAddress { + mac, macErr := net.ParseMAC(macString) + if macErr != nil { + return nil, E.Cause(macErr, "parse include_mac_address[", i, "]") + } + includeMACAddress = append(includeMACAddress, mac) + } + var excludeMACAddress []net.HardwareAddr + for i, macString := range options.ExcludeMACAddress { + mac, macErr := net.ParseMAC(macString) + if macErr != nil { + return nil, E.Cause(macErr, "parse exclude_mac_address[", i, "]") + } + excludeMACAddress = append(excludeMACAddress, mac) + } networkManager := service.FromContext[adapter.NetworkManager](ctx) multiPendingPackets := C.IsDarwin && ((options.Stack == "gvisor" && tunMTU < 32768) || (options.Stack != "gvisor" && options.MTU <= 9000)) inbound := &Inbound{ @@ -193,6 +209,8 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo IncludeAndroidUser: options.IncludeAndroidUser, IncludePackage: options.IncludePackage, ExcludePackage: options.ExcludePackage, + IncludeMACAddress: includeMACAddress, + ExcludeMACAddress: excludeMACAddress, InterfaceMonitor: networkManager.InterfaceMonitor(), EXP_MultiPendingPackets: multiPendingPackets, }, diff --git a/route/neighbor_resolver_darwin.go b/route/neighbor_resolver_darwin.go new file mode 100644 index 0000000000..a8884ae628 --- /dev/null +++ b/route/neighbor_resolver_darwin.go @@ -0,0 +1,239 @@ +//go:build darwin + +package route + +import ( + "net" + "net/netip" + "os" + "sync" + "time" + + "github.com/sagernet/fswatch" + "github.com/sagernet/sing-box/adapter" + "github.com/sagernet/sing/common/buf" + E "github.com/sagernet/sing/common/exceptions" + "github.com/sagernet/sing/common/logger" + + "golang.org/x/net/route" + "golang.org/x/sys/unix" +) + +var defaultLeaseFiles = []string{ + "/var/db/dhcpd_leases", + "/tmp/dhcp.leases", +} + +type neighborResolver struct { + logger logger.ContextLogger + leaseFiles []string + access sync.RWMutex + neighborIPToMAC map[netip.Addr]net.HardwareAddr + leaseIPToMAC map[netip.Addr]net.HardwareAddr + ipToHostname map[netip.Addr]string + macToHostname map[string]string + watcher *fswatch.Watcher + done chan struct{} +} + +func newNeighborResolver(resolverLogger logger.ContextLogger, leaseFiles []string) (adapter.NeighborResolver, error) { + if len(leaseFiles) == 0 { + for _, path := range defaultLeaseFiles { + info, err := os.Stat(path) + if err == nil && info.Size() > 0 { + leaseFiles = append(leaseFiles, path) + } + } + } + return &neighborResolver{ + logger: resolverLogger, + leaseFiles: leaseFiles, + neighborIPToMAC: make(map[netip.Addr]net.HardwareAddr), + leaseIPToMAC: make(map[netip.Addr]net.HardwareAddr), + ipToHostname: make(map[netip.Addr]string), + macToHostname: make(map[string]string), + done: make(chan struct{}), + }, nil +} + +func (r *neighborResolver) Start() error { + err := r.loadNeighborTable() + if err != nil { + r.logger.Warn(E.Cause(err, "load neighbor table")) + } + r.doReloadLeaseFiles() + go r.subscribeNeighborUpdates() + if len(r.leaseFiles) > 0 { + watcher, err := fswatch.NewWatcher(fswatch.Options{ + Path: r.leaseFiles, + Logger: r.logger, + Callback: func(_ string) { + r.doReloadLeaseFiles() + }, + }) + if err != nil { + r.logger.Warn(E.Cause(err, "create lease file watcher")) + } else { + r.watcher = watcher + err = watcher.Start() + if err != nil { + r.logger.Warn(E.Cause(err, "start lease file watcher")) + } + } + } + return nil +} + +func (r *neighborResolver) Close() error { + close(r.done) + if r.watcher != nil { + return r.watcher.Close() + } + return nil +} + +func (r *neighborResolver) LookupMAC(address netip.Addr) (net.HardwareAddr, bool) { + r.access.RLock() + defer r.access.RUnlock() + mac, found := r.neighborIPToMAC[address] + if found { + return mac, true + } + mac, found = r.leaseIPToMAC[address] + if found { + return mac, true + } + mac, found = extractMACFromEUI64(address) + if found { + return mac, true + } + return nil, false +} + +func (r *neighborResolver) LookupHostname(address netip.Addr) (string, bool) { + r.access.RLock() + defer r.access.RUnlock() + hostname, found := r.ipToHostname[address] + if found { + return hostname, true + } + mac, macFound := r.neighborIPToMAC[address] + if !macFound { + mac, macFound = r.leaseIPToMAC[address] + } + if !macFound { + mac, macFound = extractMACFromEUI64(address) + } + if macFound { + hostname, found = r.macToHostname[mac.String()] + if found { + return hostname, true + } + } + return "", false +} + +func (r *neighborResolver) loadNeighborTable() error { + entries, err := ReadNeighborEntries() + if err != nil { + return err + } + r.access.Lock() + defer r.access.Unlock() + for _, entry := range entries { + r.neighborIPToMAC[entry.Address] = entry.MACAddress + } + return nil +} + +func (r *neighborResolver) subscribeNeighborUpdates() { + routeSocket, err := unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW, 0) + if err != nil { + r.logger.Warn(E.Cause(err, "subscribe neighbor updates")) + return + } + err = unix.SetNonblock(routeSocket, true) + if err != nil { + unix.Close(routeSocket) + r.logger.Warn(E.Cause(err, "set route socket nonblock")) + return + } + routeSocketFile := os.NewFile(uintptr(routeSocket), "route") + defer routeSocketFile.Close() + buffer := buf.NewPacket() + defer buffer.Release() + for { + select { + case <-r.done: + return + default: + } + err = setReadDeadline(routeSocketFile, 3*time.Second) + if err != nil { + r.logger.Warn(E.Cause(err, "set route socket read deadline")) + return + } + n, err := routeSocketFile.Read(buffer.FreeBytes()) + if err != nil { + if nerr, ok := err.(net.Error); ok && nerr.Timeout() { + continue + } + select { + case <-r.done: + return + default: + } + r.logger.Warn(E.Cause(err, "receive neighbor update")) + continue + } + messages, err := route.ParseRIB(route.RIBTypeRoute, buffer.FreeBytes()[:n]) + if err != nil { + continue + } + for _, message := range messages { + routeMessage, isRouteMessage := message.(*route.RouteMessage) + if !isRouteMessage { + continue + } + if routeMessage.Flags&unix.RTF_LLINFO == 0 { + continue + } + address, mac, isDelete, ok := ParseRouteNeighborMessage(routeMessage) + if !ok { + continue + } + r.access.Lock() + if isDelete { + delete(r.neighborIPToMAC, address) + } else { + r.neighborIPToMAC[address] = mac + } + r.access.Unlock() + } + } +} + +func (r *neighborResolver) doReloadLeaseFiles() { + leaseIPToMAC, ipToHostname, macToHostname := ReloadLeaseFiles(r.leaseFiles) + r.access.Lock() + r.leaseIPToMAC = leaseIPToMAC + r.ipToHostname = ipToHostname + r.macToHostname = macToHostname + r.access.Unlock() +} + +func setReadDeadline(file *os.File, timeout time.Duration) error { + rawConn, err := file.SyscallConn() + if err != nil { + return err + } + var controlErr error + err = rawConn.Control(func(fd uintptr) { + tv := unix.NsecToTimeval(int64(timeout)) + controlErr = unix.SetsockoptTimeval(int(fd), unix.SOL_SOCKET, unix.SO_RCVTIMEO, &tv) + }) + if err != nil { + return err + } + return controlErr +} diff --git a/route/neighbor_resolver_lease.go b/route/neighbor_resolver_lease.go new file mode 100644 index 0000000000..e3f9c0b464 --- /dev/null +++ b/route/neighbor_resolver_lease.go @@ -0,0 +1,386 @@ +package route + +import ( + "bufio" + "encoding/hex" + "net" + "net/netip" + "os" + "strconv" + "strings" + "time" +) + +func parseLeaseFile(path string, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + file, err := os.Open(path) + if err != nil { + return + } + defer file.Close() + if strings.HasSuffix(path, "dhcpd_leases") { + parseBootpdLeases(file, ipToMAC, ipToHostname, macToHostname) + return + } + if strings.HasSuffix(path, "kea-leases4.csv") { + parseKeaCSV4(file, ipToMAC, ipToHostname, macToHostname) + return + } + if strings.HasSuffix(path, "kea-leases6.csv") { + parseKeaCSV6(file, ipToMAC, ipToHostname, macToHostname) + return + } + if strings.HasSuffix(path, "dhcpd.leases") { + parseISCDhcpd(file, ipToMAC, ipToHostname, macToHostname) + return + } + parseDnsmasqOdhcpd(file, ipToMAC, ipToHostname, macToHostname) +} + +func ReloadLeaseFiles(leaseFiles []string) (leaseIPToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + leaseIPToMAC = make(map[netip.Addr]net.HardwareAddr) + ipToHostname = make(map[netip.Addr]string) + macToHostname = make(map[string]string) + for _, path := range leaseFiles { + parseLeaseFile(path, leaseIPToMAC, ipToHostname, macToHostname) + } + return +} + +func parseDnsmasqOdhcpd(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + now := time.Now().Unix() + scanner := bufio.NewScanner(file) + for scanner.Scan() { + line := scanner.Text() + if strings.HasPrefix(line, "duid ") { + continue + } + if strings.HasPrefix(line, "# ") { + parseOdhcpdLine(line[2:], ipToMAC, ipToHostname, macToHostname) + continue + } + fields := strings.Fields(line) + if len(fields) < 4 { + continue + } + expiry, err := strconv.ParseInt(fields[0], 10, 64) + if err != nil { + continue + } + if expiry != 0 && expiry < now { + continue + } + if strings.Contains(fields[1], ":") { + mac, macErr := net.ParseMAC(fields[1]) + if macErr != nil { + continue + } + address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[2])) + if !addrOK { + continue + } + address = address.Unmap() + ipToMAC[address] = mac + hostname := fields[3] + if hostname != "*" { + ipToHostname[address] = hostname + macToHostname[mac.String()] = hostname + } + } else { + var mac net.HardwareAddr + if len(fields) >= 5 { + duid, duidErr := parseDUID(fields[4]) + if duidErr == nil { + mac, _ = extractMACFromDUID(duid) + } + } + address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[2])) + if !addrOK { + continue + } + address = address.Unmap() + if mac != nil { + ipToMAC[address] = mac + } + hostname := fields[3] + if hostname != "*" { + ipToHostname[address] = hostname + if mac != nil { + macToHostname[mac.String()] = hostname + } + } + } + } +} + +func parseOdhcpdLine(line string, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + fields := strings.Fields(line) + if len(fields) < 5 { + return + } + validTime, err := strconv.ParseInt(fields[4], 10, 64) + if err != nil { + return + } + if validTime == 0 { + return + } + if validTime > 0 && validTime < time.Now().Unix() { + return + } + hostname := fields[3] + if hostname == "-" || strings.HasPrefix(hostname, `broken\x20`) { + hostname = "" + } + if len(fields) >= 8 && fields[2] == "ipv4" { + mac, macErr := net.ParseMAC(fields[1]) + if macErr != nil { + return + } + addressField := fields[7] + slashIndex := strings.IndexByte(addressField, '/') + if slashIndex >= 0 { + addressField = addressField[:slashIndex] + } + address, addrOK := netip.AddrFromSlice(net.ParseIP(addressField)) + if !addrOK { + return + } + address = address.Unmap() + ipToMAC[address] = mac + if hostname != "" { + ipToHostname[address] = hostname + macToHostname[mac.String()] = hostname + } + return + } + var mac net.HardwareAddr + duidHex := fields[1] + duidBytes, hexErr := hex.DecodeString(duidHex) + if hexErr == nil { + mac, _ = extractMACFromDUID(duidBytes) + } + for i := 7; i < len(fields); i++ { + addressField := fields[i] + slashIndex := strings.IndexByte(addressField, '/') + if slashIndex >= 0 { + addressField = addressField[:slashIndex] + } + address, addrOK := netip.AddrFromSlice(net.ParseIP(addressField)) + if !addrOK { + continue + } + address = address.Unmap() + if mac != nil { + ipToMAC[address] = mac + } + if hostname != "" { + ipToHostname[address] = hostname + if mac != nil { + macToHostname[mac.String()] = hostname + } + } + } +} + +func parseISCDhcpd(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + scanner := bufio.NewScanner(file) + var currentIP netip.Addr + var currentMAC net.HardwareAddr + var currentHostname string + var currentActive bool + var inLease bool + for scanner.Scan() { + line := strings.TrimSpace(scanner.Text()) + if strings.HasPrefix(line, "lease ") && strings.HasSuffix(line, "{") { + ipString := strings.TrimSuffix(strings.TrimPrefix(line, "lease "), " {") + parsed, addrOK := netip.AddrFromSlice(net.ParseIP(ipString)) + if addrOK { + currentIP = parsed.Unmap() + inLease = true + currentMAC = nil + currentHostname = "" + currentActive = false + } + continue + } + if line == "}" && inLease { + if currentActive && currentMAC != nil { + ipToMAC[currentIP] = currentMAC + if currentHostname != "" { + ipToHostname[currentIP] = currentHostname + macToHostname[currentMAC.String()] = currentHostname + } + } else { + delete(ipToMAC, currentIP) + delete(ipToHostname, currentIP) + } + inLease = false + continue + } + if !inLease { + continue + } + if strings.HasPrefix(line, "hardware ethernet ") { + macString := strings.TrimSuffix(strings.TrimPrefix(line, "hardware ethernet "), ";") + parsed, macErr := net.ParseMAC(macString) + if macErr == nil { + currentMAC = parsed + } + } else if strings.HasPrefix(line, "client-hostname ") { + hostname := strings.TrimSuffix(strings.TrimPrefix(line, "client-hostname "), ";") + hostname = strings.Trim(hostname, "\"") + if hostname != "" { + currentHostname = hostname + } + } else if strings.HasPrefix(line, "binding state ") { + state := strings.TrimSuffix(strings.TrimPrefix(line, "binding state "), ";") + currentActive = state == "active" + } + } +} + +func parseKeaCSV4(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + scanner := bufio.NewScanner(file) + firstLine := true + for scanner.Scan() { + if firstLine { + firstLine = false + continue + } + fields := strings.Split(scanner.Text(), ",") + if len(fields) < 10 { + continue + } + if fields[9] != "0" { + continue + } + address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[0])) + if !addrOK { + continue + } + address = address.Unmap() + mac, macErr := net.ParseMAC(fields[1]) + if macErr != nil { + continue + } + ipToMAC[address] = mac + hostname := "" + if len(fields) > 8 { + hostname = fields[8] + } + if hostname != "" { + ipToHostname[address] = hostname + macToHostname[mac.String()] = hostname + } + } +} + +func parseKeaCSV6(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + scanner := bufio.NewScanner(file) + firstLine := true + for scanner.Scan() { + if firstLine { + firstLine = false + continue + } + fields := strings.Split(scanner.Text(), ",") + if len(fields) < 14 { + continue + } + if fields[13] != "0" { + continue + } + address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[0])) + if !addrOK { + continue + } + address = address.Unmap() + var mac net.HardwareAddr + if fields[12] != "" { + mac, _ = net.ParseMAC(fields[12]) + } + if mac == nil { + duid, duidErr := hex.DecodeString(strings.ReplaceAll(fields[1], ":", "")) + if duidErr == nil { + mac, _ = extractMACFromDUID(duid) + } + } + hostname := "" + if len(fields) > 11 { + hostname = fields[11] + } + if mac != nil { + ipToMAC[address] = mac + } + if hostname != "" { + ipToHostname[address] = hostname + if mac != nil { + macToHostname[mac.String()] = hostname + } + } + } +} + +func parseBootpdLeases(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) { + now := time.Now().Unix() + scanner := bufio.NewScanner(file) + var currentName string + var currentIP netip.Addr + var currentMAC net.HardwareAddr + var currentLease int64 + var inBlock bool + for scanner.Scan() { + line := strings.TrimSpace(scanner.Text()) + if line == "{" { + inBlock = true + currentName = "" + currentIP = netip.Addr{} + currentMAC = nil + currentLease = 0 + continue + } + if line == "}" && inBlock { + if currentMAC != nil && currentIP.IsValid() { + if currentLease == 0 || currentLease >= now { + ipToMAC[currentIP] = currentMAC + if currentName != "" { + ipToHostname[currentIP] = currentName + macToHostname[currentMAC.String()] = currentName + } + } + } + inBlock = false + continue + } + if !inBlock { + continue + } + key, value, found := strings.Cut(line, "=") + if !found { + continue + } + switch key { + case "name": + currentName = value + case "ip_address": + parsed, addrOK := netip.AddrFromSlice(net.ParseIP(value)) + if addrOK { + currentIP = parsed.Unmap() + } + case "hw_address": + typeAndMAC, hasSep := strings.CutPrefix(value, "1,") + if hasSep { + mac, macErr := net.ParseMAC(typeAndMAC) + if macErr == nil { + currentMAC = mac + } + } + case "lease": + leaseHex := strings.TrimPrefix(value, "0x") + parsed, parseErr := strconv.ParseInt(leaseHex, 16, 64) + if parseErr == nil { + currentLease = parsed + } + } + } +} diff --git a/route/neighbor_resolver_linux.go b/route/neighbor_resolver_linux.go new file mode 100644 index 0000000000..b7991b4c89 --- /dev/null +++ b/route/neighbor_resolver_linux.go @@ -0,0 +1,224 @@ +//go:build linux + +package route + +import ( + "net" + "net/netip" + "os" + "slices" + "sync" + "time" + + "github.com/sagernet/fswatch" + "github.com/sagernet/sing-box/adapter" + E "github.com/sagernet/sing/common/exceptions" + "github.com/sagernet/sing/common/logger" + + "github.com/jsimonetti/rtnetlink" + "github.com/mdlayher/netlink" + "golang.org/x/sys/unix" +) + +var defaultLeaseFiles = []string{ + "/tmp/dhcp.leases", + "/var/lib/dhcp/dhcpd.leases", + "/var/lib/dhcpd/dhcpd.leases", + "/var/lib/kea/kea-leases4.csv", + "/var/lib/kea/kea-leases6.csv", +} + +type neighborResolver struct { + logger logger.ContextLogger + leaseFiles []string + access sync.RWMutex + neighborIPToMAC map[netip.Addr]net.HardwareAddr + leaseIPToMAC map[netip.Addr]net.HardwareAddr + ipToHostname map[netip.Addr]string + macToHostname map[string]string + watcher *fswatch.Watcher + done chan struct{} +} + +func newNeighborResolver(resolverLogger logger.ContextLogger, leaseFiles []string) (adapter.NeighborResolver, error) { + if len(leaseFiles) == 0 { + for _, path := range defaultLeaseFiles { + info, err := os.Stat(path) + if err == nil && info.Size() > 0 { + leaseFiles = append(leaseFiles, path) + } + } + } + return &neighborResolver{ + logger: resolverLogger, + leaseFiles: leaseFiles, + neighborIPToMAC: make(map[netip.Addr]net.HardwareAddr), + leaseIPToMAC: make(map[netip.Addr]net.HardwareAddr), + ipToHostname: make(map[netip.Addr]string), + macToHostname: make(map[string]string), + done: make(chan struct{}), + }, nil +} + +func (r *neighborResolver) Start() error { + err := r.loadNeighborTable() + if err != nil { + r.logger.Warn(E.Cause(err, "load neighbor table")) + } + r.doReloadLeaseFiles() + go r.subscribeNeighborUpdates() + if len(r.leaseFiles) > 0 { + watcher, err := fswatch.NewWatcher(fswatch.Options{ + Path: r.leaseFiles, + Logger: r.logger, + Callback: func(_ string) { + r.doReloadLeaseFiles() + }, + }) + if err != nil { + r.logger.Warn(E.Cause(err, "create lease file watcher")) + } else { + r.watcher = watcher + err = watcher.Start() + if err != nil { + r.logger.Warn(E.Cause(err, "start lease file watcher")) + } + } + } + return nil +} + +func (r *neighborResolver) Close() error { + close(r.done) + if r.watcher != nil { + return r.watcher.Close() + } + return nil +} + +func (r *neighborResolver) LookupMAC(address netip.Addr) (net.HardwareAddr, bool) { + r.access.RLock() + defer r.access.RUnlock() + mac, found := r.neighborIPToMAC[address] + if found { + return mac, true + } + mac, found = r.leaseIPToMAC[address] + if found { + return mac, true + } + mac, found = extractMACFromEUI64(address) + if found { + return mac, true + } + return nil, false +} + +func (r *neighborResolver) LookupHostname(address netip.Addr) (string, bool) { + r.access.RLock() + defer r.access.RUnlock() + hostname, found := r.ipToHostname[address] + if found { + return hostname, true + } + mac, macFound := r.neighborIPToMAC[address] + if !macFound { + mac, macFound = r.leaseIPToMAC[address] + } + if !macFound { + mac, macFound = extractMACFromEUI64(address) + } + if macFound { + hostname, found = r.macToHostname[mac.String()] + if found { + return hostname, true + } + } + return "", false +} + +func (r *neighborResolver) loadNeighborTable() error { + connection, err := rtnetlink.Dial(nil) + if err != nil { + return E.Cause(err, "dial rtnetlink") + } + defer connection.Close() + neighbors, err := connection.Neigh.List() + if err != nil { + return E.Cause(err, "list neighbors") + } + r.access.Lock() + defer r.access.Unlock() + for _, neigh := range neighbors { + if neigh.Attributes == nil { + continue + } + if neigh.Attributes.LLAddress == nil || len(neigh.Attributes.Address) == 0 { + continue + } + address, ok := netip.AddrFromSlice(neigh.Attributes.Address) + if !ok { + continue + } + r.neighborIPToMAC[address] = slices.Clone(neigh.Attributes.LLAddress) + } + return nil +} + +func (r *neighborResolver) subscribeNeighborUpdates() { + connection, err := netlink.Dial(unix.NETLINK_ROUTE, &netlink.Config{ + Groups: 1 << (unix.RTNLGRP_NEIGH - 1), + }) + if err != nil { + r.logger.Warn(E.Cause(err, "subscribe neighbor updates")) + return + } + defer connection.Close() + for { + select { + case <-r.done: + return + default: + } + err = connection.SetReadDeadline(time.Now().Add(3 * time.Second)) + if err != nil { + r.logger.Warn(E.Cause(err, "set netlink read deadline")) + return + } + messages, err := connection.Receive() + if err != nil { + if nerr, ok := err.(net.Error); ok && nerr.Timeout() { + continue + } + select { + case <-r.done: + return + default: + } + r.logger.Warn(E.Cause(err, "receive neighbor update")) + continue + } + for _, message := range messages { + address, mac, isDelete, ok := ParseNeighborMessage(message) + if !ok { + continue + } + r.access.Lock() + if isDelete { + delete(r.neighborIPToMAC, address) + } else { + r.neighborIPToMAC[address] = mac + } + r.access.Unlock() + } + } +} + +func (r *neighborResolver) doReloadLeaseFiles() { + leaseIPToMAC, ipToHostname, macToHostname := ReloadLeaseFiles(r.leaseFiles) + r.access.Lock() + r.leaseIPToMAC = leaseIPToMAC + r.ipToHostname = ipToHostname + r.macToHostname = macToHostname + r.access.Unlock() +} diff --git a/route/neighbor_resolver_parse.go b/route/neighbor_resolver_parse.go new file mode 100644 index 0000000000..1979b7eabc --- /dev/null +++ b/route/neighbor_resolver_parse.go @@ -0,0 +1,50 @@ +package route + +import ( + "encoding/binary" + "encoding/hex" + "net" + "net/netip" + "slices" + "strings" +) + +func extractMACFromDUID(duid []byte) (net.HardwareAddr, bool) { + if len(duid) < 4 { + return nil, false + } + duidType := binary.BigEndian.Uint16(duid[0:2]) + hwType := binary.BigEndian.Uint16(duid[2:4]) + if hwType != 1 { + return nil, false + } + switch duidType { + case 1: + if len(duid) < 14 { + return nil, false + } + return net.HardwareAddr(slices.Clone(duid[8:14])), true + case 3: + if len(duid) < 10 { + return nil, false + } + return net.HardwareAddr(slices.Clone(duid[4:10])), true + } + return nil, false +} + +func extractMACFromEUI64(address netip.Addr) (net.HardwareAddr, bool) { + if !address.Is6() { + return nil, false + } + b := address.As16() + if b[11] != 0xff || b[12] != 0xfe { + return nil, false + } + return net.HardwareAddr{b[8] ^ 0x02, b[9], b[10], b[13], b[14], b[15]}, true +} + +func parseDUID(s string) ([]byte, error) { + cleaned := strings.ReplaceAll(s, ":", "") + return hex.DecodeString(cleaned) +} diff --git a/route/neighbor_resolver_platform.go b/route/neighbor_resolver_platform.go new file mode 100644 index 0000000000..ddb9a99592 --- /dev/null +++ b/route/neighbor_resolver_platform.go @@ -0,0 +1,84 @@ +package route + +import ( + "net" + "net/netip" + "sync" + + "github.com/sagernet/sing-box/adapter" + "github.com/sagernet/sing/common/logger" +) + +type platformNeighborResolver struct { + logger logger.ContextLogger + platform adapter.PlatformInterface + access sync.RWMutex + ipToMAC map[netip.Addr]net.HardwareAddr + ipToHostname map[netip.Addr]string + macToHostname map[string]string +} + +func newPlatformNeighborResolver(resolverLogger logger.ContextLogger, platform adapter.PlatformInterface) adapter.NeighborResolver { + return &platformNeighborResolver{ + logger: resolverLogger, + platform: platform, + ipToMAC: make(map[netip.Addr]net.HardwareAddr), + ipToHostname: make(map[netip.Addr]string), + macToHostname: make(map[string]string), + } +} + +func (r *platformNeighborResolver) Start() error { + return r.platform.StartNeighborMonitor(r) +} + +func (r *platformNeighborResolver) Close() error { + return r.platform.CloseNeighborMonitor(r) +} + +func (r *platformNeighborResolver) LookupMAC(address netip.Addr) (net.HardwareAddr, bool) { + r.access.RLock() + defer r.access.RUnlock() + mac, found := r.ipToMAC[address] + if found { + return mac, true + } + return extractMACFromEUI64(address) +} + +func (r *platformNeighborResolver) LookupHostname(address netip.Addr) (string, bool) { + r.access.RLock() + defer r.access.RUnlock() + hostname, found := r.ipToHostname[address] + if found { + return hostname, true + } + mac, found := r.ipToMAC[address] + if !found { + mac, found = extractMACFromEUI64(address) + } + if !found { + return "", false + } + hostname, found = r.macToHostname[mac.String()] + return hostname, found +} + +func (r *platformNeighborResolver) UpdateNeighborTable(entries []adapter.NeighborEntry) { + ipToMAC := make(map[netip.Addr]net.HardwareAddr) + ipToHostname := make(map[netip.Addr]string) + macToHostname := make(map[string]string) + for _, entry := range entries { + ipToMAC[entry.Address] = entry.MACAddress + if entry.Hostname != "" { + ipToHostname[entry.Address] = entry.Hostname + macToHostname[entry.MACAddress.String()] = entry.Hostname + } + } + r.access.Lock() + r.ipToMAC = ipToMAC + r.ipToHostname = ipToHostname + r.macToHostname = macToHostname + r.access.Unlock() + r.logger.Info("updated neighbor table: ", len(entries), " entries") +} diff --git a/route/neighbor_resolver_stub.go b/route/neighbor_resolver_stub.go new file mode 100644 index 0000000000..177a1fccbc --- /dev/null +++ b/route/neighbor_resolver_stub.go @@ -0,0 +1,14 @@ +//go:build !linux && !darwin + +package route + +import ( + "os" + + "github.com/sagernet/sing-box/adapter" + "github.com/sagernet/sing/common/logger" +) + +func newNeighborResolver(_ logger.ContextLogger, _ []string) (adapter.NeighborResolver, error) { + return nil, os.ErrInvalid +} diff --git a/route/neighbor_table_darwin.go b/route/neighbor_table_darwin.go new file mode 100644 index 0000000000..8ca2d0f0b7 --- /dev/null +++ b/route/neighbor_table_darwin.go @@ -0,0 +1,104 @@ +//go:build darwin + +package route + +import ( + "net" + "net/netip" + "syscall" + + "github.com/sagernet/sing-box/adapter" + E "github.com/sagernet/sing/common/exceptions" + + "golang.org/x/net/route" + "golang.org/x/sys/unix" +) + +func ReadNeighborEntries() ([]adapter.NeighborEntry, error) { + var entries []adapter.NeighborEntry + ipv4Entries, err := readNeighborEntriesAF(syscall.AF_INET) + if err != nil { + return nil, E.Cause(err, "read IPv4 neighbors") + } + entries = append(entries, ipv4Entries...) + ipv6Entries, err := readNeighborEntriesAF(syscall.AF_INET6) + if err != nil { + return nil, E.Cause(err, "read IPv6 neighbors") + } + entries = append(entries, ipv6Entries...) + return entries, nil +} + +func readNeighborEntriesAF(addressFamily int) ([]adapter.NeighborEntry, error) { + rib, err := route.FetchRIB(addressFamily, route.RIBType(syscall.NET_RT_FLAGS), syscall.RTF_LLINFO) + if err != nil { + return nil, err + } + messages, err := route.ParseRIB(route.RIBType(syscall.NET_RT_FLAGS), rib) + if err != nil { + return nil, err + } + var entries []adapter.NeighborEntry + for _, message := range messages { + routeMessage, isRouteMessage := message.(*route.RouteMessage) + if !isRouteMessage { + continue + } + address, macAddress, ok := parseRouteNeighborEntry(routeMessage) + if !ok { + continue + } + entries = append(entries, adapter.NeighborEntry{ + Address: address, + MACAddress: macAddress, + }) + } + return entries, nil +} + +func parseRouteNeighborEntry(message *route.RouteMessage) (address netip.Addr, macAddress net.HardwareAddr, ok bool) { + if len(message.Addrs) <= unix.RTAX_GATEWAY { + return + } + gateway, isLinkAddr := message.Addrs[unix.RTAX_GATEWAY].(*route.LinkAddr) + if !isLinkAddr || len(gateway.Addr) < 6 { + return + } + switch destination := message.Addrs[unix.RTAX_DST].(type) { + case *route.Inet4Addr: + address = netip.AddrFrom4(destination.IP) + case *route.Inet6Addr: + address = netip.AddrFrom16(destination.IP) + default: + return + } + macAddress = net.HardwareAddr(make([]byte, len(gateway.Addr))) + copy(macAddress, gateway.Addr) + ok = true + return +} + +func ParseRouteNeighborMessage(message *route.RouteMessage) (address netip.Addr, macAddress net.HardwareAddr, isDelete bool, ok bool) { + isDelete = message.Type == unix.RTM_DELETE + if len(message.Addrs) <= unix.RTAX_GATEWAY { + return + } + switch destination := message.Addrs[unix.RTAX_DST].(type) { + case *route.Inet4Addr: + address = netip.AddrFrom4(destination.IP) + case *route.Inet6Addr: + address = netip.AddrFrom16(destination.IP) + default: + return + } + if !isDelete { + gateway, isLinkAddr := message.Addrs[unix.RTAX_GATEWAY].(*route.LinkAddr) + if !isLinkAddr || len(gateway.Addr) < 6 { + return + } + macAddress = net.HardwareAddr(make([]byte, len(gateway.Addr))) + copy(macAddress, gateway.Addr) + } + ok = true + return +} diff --git a/route/neighbor_table_linux.go b/route/neighbor_table_linux.go new file mode 100644 index 0000000000..61a214fd3a --- /dev/null +++ b/route/neighbor_table_linux.go @@ -0,0 +1,68 @@ +//go:build linux + +package route + +import ( + "net" + "net/netip" + "slices" + + "github.com/sagernet/sing-box/adapter" + E "github.com/sagernet/sing/common/exceptions" + + "github.com/jsimonetti/rtnetlink" + "github.com/mdlayher/netlink" + "golang.org/x/sys/unix" +) + +func ReadNeighborEntries() ([]adapter.NeighborEntry, error) { + connection, err := rtnetlink.Dial(nil) + if err != nil { + return nil, E.Cause(err, "dial rtnetlink") + } + defer connection.Close() + neighbors, err := connection.Neigh.List() + if err != nil { + return nil, E.Cause(err, "list neighbors") + } + var entries []adapter.NeighborEntry + for _, neighbor := range neighbors { + if neighbor.Attributes == nil { + continue + } + if neighbor.Attributes.LLAddress == nil || len(neighbor.Attributes.Address) == 0 { + continue + } + address, ok := netip.AddrFromSlice(neighbor.Attributes.Address) + if !ok { + continue + } + entries = append(entries, adapter.NeighborEntry{ + Address: address, + MACAddress: slices.Clone(neighbor.Attributes.LLAddress), + }) + } + return entries, nil +} + +func ParseNeighborMessage(message netlink.Message) (address netip.Addr, macAddress net.HardwareAddr, isDelete bool, ok bool) { + var neighMessage rtnetlink.NeighMessage + err := neighMessage.UnmarshalBinary(message.Data) + if err != nil { + return + } + if neighMessage.Attributes == nil || len(neighMessage.Attributes.Address) == 0 { + return + } + address, ok = netip.AddrFromSlice(neighMessage.Attributes.Address) + if !ok { + return + } + isDelete = message.Header.Type == unix.RTM_DELNEIGH + if !isDelete && neighMessage.Attributes.LLAddress == nil { + ok = false + return + } + macAddress = slices.Clone(neighMessage.Attributes.LLAddress) + return +} diff --git a/route/route.go b/route/route.go index 40a90e7dac..2a680fa216 100644 --- a/route/route.go +++ b/route/route.go @@ -439,6 +439,23 @@ func (r *Router) matchRule( metadata.ProcessInfo = processInfo } } + if r.neighborResolver != nil && metadata.SourceMACAddress == nil && metadata.Source.Addr.IsValid() { + mac, macFound := r.neighborResolver.LookupMAC(metadata.Source.Addr) + if macFound { + metadata.SourceMACAddress = mac + } + hostname, hostnameFound := r.neighborResolver.LookupHostname(metadata.Source.Addr) + if hostnameFound { + metadata.SourceHostname = hostname + if macFound { + r.logger.InfoContext(ctx, "found neighbor: ", mac, ", hostname: ", hostname) + } else { + r.logger.InfoContext(ctx, "found neighbor hostname: ", hostname) + } + } else if macFound { + r.logger.InfoContext(ctx, "found neighbor: ", mac) + } + } if metadata.Destination.Addr.IsValid() && r.dnsTransport.FakeIP() != nil && r.dnsTransport.FakeIP().Store().Contains(metadata.Destination.Addr) { domain, loaded := r.dnsTransport.FakeIP().Store().Lookup(metadata.Destination.Addr) if !loaded { diff --git a/route/router.go b/route/router.go index 5c73cb1c9f..c141581d01 100644 --- a/route/router.go +++ b/route/router.go @@ -31,9 +31,12 @@ type Router struct { network adapter.NetworkManager rules []adapter.Rule needFindProcess bool + needFindNeighbor bool + leaseFiles []string ruleSets []adapter.RuleSet ruleSetMap map[string]adapter.RuleSet processSearcher process.Searcher + neighborResolver adapter.NeighborResolver pauseManager pause.Manager trackers []adapter.ConnectionTracker platformInterface adapter.PlatformInterface @@ -53,6 +56,8 @@ func NewRouter(ctx context.Context, logFactory log.Factory, options option.Route rules: make([]adapter.Rule, 0, len(options.Rules)), ruleSetMap: make(map[string]adapter.RuleSet), needFindProcess: hasRule(options.Rules, isProcessRule) || hasDNSRule(dnsOptions.Rules, isProcessDNSRule) || options.FindProcess, + needFindNeighbor: hasRule(options.Rules, isNeighborRule) || hasDNSRule(dnsOptions.Rules, isNeighborDNSRule) || options.FindNeighbor, + leaseFiles: options.DHCPLeaseFiles, pauseManager: service.FromContext[pause.Manager](ctx), platformInterface: service.FromContext[adapter.PlatformInterface](ctx), } @@ -112,6 +117,7 @@ func (r *Router) Start(stage adapter.StartStage) error { } r.network.Initialize(r.ruleSets) needFindProcess := r.needFindProcess + needFindNeighbor := r.needFindNeighbor for _, ruleSet := range r.ruleSets { metadata := ruleSet.Metadata() if metadata.ContainsProcessRule { @@ -141,6 +147,36 @@ func (r *Router) Start(stage adapter.StartStage) error { } } } + r.needFindNeighbor = needFindNeighbor + if needFindNeighbor { + if r.platformInterface != nil && r.platformInterface.UsePlatformNeighborResolver() { + monitor.Start("initialize neighbor resolver") + resolver := newPlatformNeighborResolver(r.logger, r.platformInterface) + err := resolver.Start() + monitor.Finish() + if err != nil { + r.logger.Error(E.Cause(err, "start neighbor resolver")) + } else { + r.neighborResolver = resolver + } + } else { + monitor.Start("initialize neighbor resolver") + resolver, err := newNeighborResolver(r.logger, r.leaseFiles) + monitor.Finish() + if err != nil { + if err != os.ErrInvalid { + r.logger.Error(E.Cause(err, "create neighbor resolver")) + } + } else { + err = resolver.Start() + if err != nil { + r.logger.Error(E.Cause(err, "start neighbor resolver")) + } else { + r.neighborResolver = resolver + } + } + } + } case adapter.StartStatePostStart: for i, rule := range r.rules { monitor.Start("initialize rule[", i, "]") @@ -172,6 +208,13 @@ func (r *Router) Start(stage adapter.StartStage) error { func (r *Router) Close() error { monitor := taskmonitor.New(r.logger, C.StopTimeout) var err error + if r.neighborResolver != nil { + monitor.Start("close neighbor resolver") + err = E.Append(err, r.neighborResolver.Close(), func(closeErr error) error { + return E.Cause(closeErr, "close neighbor resolver") + }) + monitor.Finish() + } for i, rule := range r.rules { monitor.Start("close rule[", i, "]") err = E.Append(err, rule.Close(), func(err error) error { @@ -206,6 +249,14 @@ func (r *Router) NeedFindProcess() bool { return r.needFindProcess } +func (r *Router) NeedFindNeighbor() bool { + return r.needFindNeighbor +} + +func (r *Router) NeighborResolver() adapter.NeighborResolver { + return r.neighborResolver +} + func (r *Router) ResetNetwork() { r.network.ResetNetwork() r.dns.ResetNetwork() diff --git a/route/rule/rule_default.go b/route/rule/rule_default.go index 202fb3b36d..7ffdd521cb 100644 --- a/route/rule/rule_default.go +++ b/route/rule/rule_default.go @@ -260,6 +260,16 @@ func NewDefaultRule(ctx context.Context, logger log.ContextLogger, options optio rule.items = append(rule.items, item) rule.allItems = append(rule.allItems, item) } + if len(options.SourceMACAddress) > 0 { + item := NewSourceMACAddressItem(options.SourceMACAddress) + rule.items = append(rule.items, item) + rule.allItems = append(rule.allItems, item) + } + if len(options.SourceHostname) > 0 { + item := NewSourceHostnameItem(options.SourceHostname) + rule.items = append(rule.items, item) + rule.allItems = append(rule.allItems, item) + } if len(options.PreferredBy) > 0 { item := NewPreferredByItem(ctx, options.PreferredBy) rule.items = append(rule.items, item) diff --git a/route/rule/rule_dns.go b/route/rule/rule_dns.go index 9235dd6fd9..957df8747d 100644 --- a/route/rule/rule_dns.go +++ b/route/rule/rule_dns.go @@ -261,6 +261,16 @@ func NewDefaultDNSRule(ctx context.Context, logger log.ContextLogger, options op rule.items = append(rule.items, item) rule.allItems = append(rule.allItems, item) } + if len(options.SourceMACAddress) > 0 { + item := NewSourceMACAddressItem(options.SourceMACAddress) + rule.items = append(rule.items, item) + rule.allItems = append(rule.allItems, item) + } + if len(options.SourceHostname) > 0 { + item := NewSourceHostnameItem(options.SourceHostname) + rule.items = append(rule.items, item) + rule.allItems = append(rule.allItems, item) + } if len(options.RuleSet) > 0 { //nolint:staticcheck if options.Deprecated_RulesetIPCIDRMatchSource { diff --git a/route/rule/rule_item_source_hostname.go b/route/rule/rule_item_source_hostname.go new file mode 100644 index 0000000000..0df11c8c8a --- /dev/null +++ b/route/rule/rule_item_source_hostname.go @@ -0,0 +1,42 @@ +package rule + +import ( + "strings" + + "github.com/sagernet/sing-box/adapter" +) + +var _ RuleItem = (*SourceHostnameItem)(nil) + +type SourceHostnameItem struct { + hostnames []string + hostnameMap map[string]bool +} + +func NewSourceHostnameItem(hostnameList []string) *SourceHostnameItem { + rule := &SourceHostnameItem{ + hostnames: hostnameList, + hostnameMap: make(map[string]bool), + } + for _, hostname := range hostnameList { + rule.hostnameMap[hostname] = true + } + return rule +} + +func (r *SourceHostnameItem) Match(metadata *adapter.InboundContext) bool { + if metadata.SourceHostname == "" { + return false + } + return r.hostnameMap[metadata.SourceHostname] +} + +func (r *SourceHostnameItem) String() string { + var description string + if len(r.hostnames) == 1 { + description = "source_hostname=" + r.hostnames[0] + } else { + description = "source_hostname=[" + strings.Join(r.hostnames, " ") + "]" + } + return description +} diff --git a/route/rule/rule_item_source_mac_address.go b/route/rule/rule_item_source_mac_address.go new file mode 100644 index 0000000000..feeadb1dbf --- /dev/null +++ b/route/rule/rule_item_source_mac_address.go @@ -0,0 +1,48 @@ +package rule + +import ( + "net" + "strings" + + "github.com/sagernet/sing-box/adapter" +) + +var _ RuleItem = (*SourceMACAddressItem)(nil) + +type SourceMACAddressItem struct { + addresses []string + addressMap map[string]bool +} + +func NewSourceMACAddressItem(addressList []string) *SourceMACAddressItem { + rule := &SourceMACAddressItem{ + addresses: addressList, + addressMap: make(map[string]bool), + } + for _, address := range addressList { + parsed, err := net.ParseMAC(address) + if err == nil { + rule.addressMap[parsed.String()] = true + } else { + rule.addressMap[address] = true + } + } + return rule +} + +func (r *SourceMACAddressItem) Match(metadata *adapter.InboundContext) bool { + if metadata.SourceMACAddress == nil { + return false + } + return r.addressMap[metadata.SourceMACAddress.String()] +} + +func (r *SourceMACAddressItem) String() string { + var description string + if len(r.addresses) == 1 { + description = "source_mac_address=" + r.addresses[0] + } else { + description = "source_mac_address=[" + strings.Join(r.addresses, " ") + "]" + } + return description +} diff --git a/route/rule_conds.go b/route/rule_conds.go index 55c4a058e2..22ce94fffd 100644 --- a/route/rule_conds.go +++ b/route/rule_conds.go @@ -45,6 +45,14 @@ func isProcessDNSRule(rule option.DefaultDNSRule) bool { return len(rule.ProcessName) > 0 || len(rule.ProcessPath) > 0 || len(rule.ProcessPathRegex) > 0 || len(rule.PackageName) > 0 || len(rule.User) > 0 || len(rule.UserID) > 0 } +func isNeighborRule(rule option.DefaultRule) bool { + return len(rule.SourceMACAddress) > 0 || len(rule.SourceHostname) > 0 +} + +func isNeighborDNSRule(rule option.DefaultDNSRule) bool { + return len(rule.SourceMACAddress) > 0 || len(rule.SourceHostname) > 0 +} + func isWIFIRule(rule option.DefaultRule) bool { return len(rule.WIFISSID) > 0 || len(rule.WIFIBSSID) > 0 }