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Made-with: Cursor
2026-03-25 15:00:14 +08:00
parent b83ec91b1a
commit 7811adca66
1050 changed files with 146524 additions and 37 deletions
--- a/server/vendor/github.com/wlynxg/anet/interface_android.go
+++ b/server/vendor/github.com/wlynxg/anet/interface_android.go
@@ -0,0 +1,419 @@
+package anet
+
+import (
+	"bytes"
+	"errors"
+	"net"
+	"os"
+	"sync"
+	"syscall"
+	"time"
+	"unsafe"
+)
+
+const (
+	android11 = 11
+)
+
+var (
+	androidVersion              uint
+	errInvalidInterface         = errors.New("invalid network interface")
+	errInvalidInterfaceIndex    = errors.New("invalid network interface index")
+	errInvalidInterfaceName     = errors.New("invalid network interface name")
+	errNoSuchInterface          = errors.New("no such network interface")
+	errNoSuchMulticastInterface = errors.New("no such multicast network interface")
+)
+
+type ifReq [40]byte
+
+// Interfaces returns a list of the system's network interfaces.
+func Interfaces() ([]net.Interface, error) {
+	if androidVersion < android11 {
+		return net.Interfaces()
+	}
+
+	ift, err := interfaceTable(0)
+	if err != nil {
+		return nil, &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
+	}
+	if len(ift) != 0 {
+		zoneCache.update(ift, false)
+	}
+	return ift, nil
+}
+
+// InterfaceAddrs returns a list of the system's unicast interface
+// addresses.
+//
+// The returned list does not identify the associated interface; use
+// Interfaces and Interface.Addrs for more detail.
+func InterfaceAddrs() ([]net.Addr, error) {
+	if androidVersion < android11 {
+		return net.InterfaceAddrs()
+	}
+
+	ifat, err := interfaceAddrTable(nil)
+	if err != nil {
+		err = &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
+	}
+	return ifat, err
+}
+
+// InterfaceByIndex returns the interface specified by index.
+//
+// On Solaris, it returns one of the logical network interfaces
+// sharing the logical data link; for more precision use
+// InterfaceByName.
+func InterfaceByIndex(index int) (*net.Interface, error) {
+	if androidVersion < android11 {
+		return net.InterfaceByIndex(index)
+	}
+
+	if index <= 0 {
+		return nil, &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: errInvalidInterfaceIndex}
+	}
+	ift, err := interfaceTable(index)
+	if err != nil {
+		return nil, &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
+	}
+	ifi, err := interfaceByIndex(ift, index)
+	if err != nil {
+		err = &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
+	}
+	return ifi, err
+}
+
+// InterfaceByName returns the interface specified by name.
+func InterfaceByName(name string) (*net.Interface, error) {
+	if name == "" {
+		return nil, &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: errInvalidInterfaceName}
+	}
+	ift, err := interfaceTable(0)
+	if err != nil {
+		return nil, &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
+	}
+	if len(ift) != 0 {
+		zoneCache.update(ift, false)
+	}
+	for _, ifi := range ift {
+		if name == ifi.Name {
+			return &ifi, nil
+		}
+	}
+	return nil, &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: errNoSuchInterface}
+}
+
+// InterfaceAddrsByInterface returns a list of the system's unicast
+// interface addresses by specific interface.
+func InterfaceAddrsByInterface(ifi *net.Interface) ([]net.Addr, error) {
+	if ifi == nil {
+		return nil, &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: errInvalidInterface}
+	}
+
+	if androidVersion < android11 {
+		return ifi.Addrs()
+	}
+
+	ifat, err := interfaceAddrTable(ifi)
+	if err != nil {
+		err = &net.OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
+	}
+	return ifat, err
+}
+
+// SetAndroidVersion set the Android environment in which the program runs.
+// The Android system version number can be obtained through
+// `android.os.Build.VERSION.RELEASE` of the Android framework.
+func SetAndroidVersion(version uint) {
+	androidVersion = version
+}
+
+// An ipv6ZoneCache represents a cache holding partial network
+// interface information. It is used for reducing the cost of IPv6
+// addressing scope zone resolution.
+//
+// Multiple names sharing the index are managed by first-come
+// first-served basis for consistency.
+type ipv6ZoneCache struct {
+	sync.RWMutex                // guard the following
+	lastFetched  time.Time      // last time routing information was fetched
+	toIndex      map[string]int // interface name to its index
+	toName       map[int]string // interface index to its name
+}
+
+//go:linkname zoneCache net.zoneCache
+var zoneCache ipv6ZoneCache
+
+// update refreshes the network interface information if the cache was last
+// updated more than 1 minute ago, or if force is set. It reports whether the
+// cache was updated.
+func (zc *ipv6ZoneCache) update(ift []net.Interface, force bool) (updated bool) {
+	zc.Lock()
+	defer zc.Unlock()
+	now := time.Now()
+	if !force && zc.lastFetched.After(now.Add(-60*time.Second)) {
+		return false
+	}
+	zc.lastFetched = now
+	if len(ift) == 0 {
+		var err error
+		if ift, err = interfaceTable(0); err != nil {
+			return false
+		}
+	}
+	zc.toIndex = make(map[string]int, len(ift))
+	zc.toName = make(map[int]string, len(ift))
+	for _, ifi := range ift {
+		zc.toIndex[ifi.Name] = ifi.Index
+		if _, ok := zc.toName[ifi.Index]; !ok {
+			zc.toName[ifi.Index] = ifi.Name
+		}
+	}
+	return true
+}
+
+// If the ifindex is zero, interfaceTable returns mappings of all
+// network interfaces. Otherwise it returns a mapping of a specific
+// interface.
+func interfaceTable(ifindex int) ([]net.Interface, error) {
+	tab, err := NetlinkRIB(syscall.RTM_GETADDR, syscall.AF_UNSPEC)
+	if err != nil {
+		return nil, os.NewSyscallError("netlinkrib", err)
+	}
+	msgs, err := syscall.ParseNetlinkMessage(tab)
+	if err != nil {
+		return nil, os.NewSyscallError("parsenetlinkmessage", err)
+	}
+
+	var ift []net.Interface
+	im := make(map[uint32]struct{})
+loop:
+	for _, m := range msgs {
+		switch m.Header.Type {
+		case syscall.NLMSG_DONE:
+			break loop
+		case syscall.RTM_NEWADDR:
+			ifam := (*syscall.IfAddrmsg)(unsafe.Pointer(&m.Data[0]))
+			if _, ok := im[ifam.Index]; ok {
+				continue
+			} else {
+				im[ifam.Index] = struct{}{}
+			}
+
+			if ifindex == 0 || ifindex == int(ifam.Index) {
+				ifi := newLink(ifam)
+				if ifi != nil {
+					ift = append(ift, *ifi)
+				}
+				if ifindex == int(ifam.Index) {
+					break loop
+				}
+			}
+		}
+	}
+
+	return ift, nil
+}
+
+func newLink(ifam *syscall.IfAddrmsg) *net.Interface {
+	ift := &net.Interface{Index: int(ifam.Index)}
+
+	name, err := indexToName(ifam.Index)
+	if err != nil {
+		return nil
+	}
+	ift.Name = name
+
+	mtu, err := nameToMTU(name)
+	if err != nil {
+		return nil
+	}
+	ift.MTU = mtu
+
+	flags, err := nameToFlags(name)
+	if err != nil {
+		return nil
+	}
+	ift.Flags = flags
+	return ift
+}
+
+func linkFlags(rawFlags uint32) net.Flags {
+	var f net.Flags
+	if rawFlags&syscall.IFF_UP != 0 {
+		f |= net.FlagUp
+	}
+	if rawFlags&syscall.IFF_RUNNING != 0 {
+		f |= net.FlagRunning
+	}
+	if rawFlags&syscall.IFF_BROADCAST != 0 {
+		f |= net.FlagBroadcast
+	}
+	if rawFlags&syscall.IFF_LOOPBACK != 0 {
+		f |= net.FlagLoopback
+	}
+	if rawFlags&syscall.IFF_POINTOPOINT != 0 {
+		f |= net.FlagPointToPoint
+	}
+	if rawFlags&syscall.IFF_MULTICAST != 0 {
+		f |= net.FlagMulticast
+	}
+	return f
+}
+
+// If the ifi is nil, interfaceAddrTable returns addresses for all
+// network interfaces. Otherwise it returns addresses for a specific
+// interface.
+func interfaceAddrTable(ifi *net.Interface) ([]net.Addr, error) {
+	tab, err := NetlinkRIB(syscall.RTM_GETADDR, syscall.AF_UNSPEC)
+	if err != nil {
+		return nil, os.NewSyscallError("netlinkrib", err)
+	}
+	msgs, err := syscall.ParseNetlinkMessage(tab)
+	if err != nil {
+		return nil, os.NewSyscallError("parsenetlinkmessage", err)
+	}
+
+	var ift []net.Interface
+	if ifi == nil {
+		var err error
+		ift, err = interfaceTable(0)
+		if err != nil {
+			return nil, err
+		}
+	}
+	ifat, err := addrTable(ift, ifi, msgs)
+	if err != nil {
+		return nil, err
+	}
+	return ifat, nil
+}
+
+func addrTable(ift []net.Interface, ifi *net.Interface, msgs []syscall.NetlinkMessage) ([]net.Addr, error) {
+	var ifat []net.Addr
+loop:
+	for _, m := range msgs {
+		switch m.Header.Type {
+		case syscall.NLMSG_DONE:
+			break loop
+		case syscall.RTM_NEWADDR:
+			ifam := (*syscall.IfAddrmsg)(unsafe.Pointer(&m.Data[0]))
+			if len(ift) != 0 || ifi.Index == int(ifam.Index) {
+				attrs, err := syscall.ParseNetlinkRouteAttr(&m)
+				if err != nil {
+					return nil, os.NewSyscallError("parsenetlinkrouteattr", err)
+				}
+				ifa := newAddr(ifam, attrs)
+				if ifa != nil {
+					ifat = append(ifat, ifa)
+				}
+			}
+		}
+	}
+	return ifat, nil
+}
+
+func newAddr(ifam *syscall.IfAddrmsg, attrs []syscall.NetlinkRouteAttr) net.Addr {
+	var ipPointToPoint bool
+	// Seems like we need to make sure whether the IP interface
+	// stack consists of IP point-to-point numbered or unnumbered
+	// addressing.
+	for _, a := range attrs {
+		if a.Attr.Type == syscall.IFA_LOCAL {
+			ipPointToPoint = true
+			break
+		}
+	}
+	for _, a := range attrs {
+		if ipPointToPoint && a.Attr.Type == syscall.IFA_ADDRESS {
+			continue
+		}
+		switch ifam.Family {
+		case syscall.AF_INET:
+			return &net.IPNet{IP: net.IPv4(a.Value[0], a.Value[1], a.Value[2], a.Value[3]), Mask: net.CIDRMask(int(ifam.Prefixlen), 8*net.IPv4len)}
+		case syscall.AF_INET6:
+			ifa := &net.IPNet{IP: make(net.IP, net.IPv6len), Mask: net.CIDRMask(int(ifam.Prefixlen), 8*net.IPv6len)}
+			copy(ifa.IP, a.Value[:])
+			return ifa
+		}
+	}
+	return nil
+}
+
+func interfaceByIndex(ift []net.Interface, index int) (*net.Interface, error) {
+	for _, ifi := range ift {
+		if index == ifi.Index {
+			return &ifi, nil
+		}
+	}
+	return nil, errNoSuchInterface
+}
+
+func ioctl(fd int, req uint, arg unsafe.Pointer) error {
+	_, _, e1 := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
+	if e1 != 0 {
+		return e1
+	}
+	return nil
+}
+
+func indexToName(index uint32) (string, error) {
+	fd, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_DGRAM|syscall.SOCK_CLOEXEC, 0)
+	if err != nil {
+		return "", err
+	}
+	defer syscall.Close(fd)
+
+	var ifr ifReq
+	*(*uint32)(unsafe.Pointer(&ifr[syscall.IFNAMSIZ])) = index
+	err = ioctl(fd, syscall.SIOCGIFNAME, unsafe.Pointer(&ifr[0]))
+	if err != nil {
+		return "", err
+	}
+
+	return string(bytes.Trim(ifr[:syscall.IFNAMSIZ], "\x00")), nil
+}
+
+func nameToMTU(name string) (int, error) {
+	// Leave room for terminating NULL byte.
+	if len(name) >= syscall.IFNAMSIZ {
+		return -1, syscall.EINVAL
+	}
+
+	fd, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_DGRAM|syscall.SOCK_CLOEXEC, 0)
+	if err != nil {
+		return -1, err
+	}
+	defer syscall.Close(fd)
+
+	var ifr ifReq
+	copy(ifr[:], name)
+	err = ioctl(fd, syscall.SIOCGIFMTU, unsafe.Pointer(&ifr[0]))
+	if err != nil {
+		return -1, err
+	}
+
+	return int(*(*int32)(unsafe.Pointer(&ifr[syscall.IFNAMSIZ]))), nil
+}
+
+func nameToFlags(name string) (net.Flags, error) {
+	// Leave room for terminating NULL byte.
+	if len(name) >= syscall.IFNAMSIZ {
+		return 0, syscall.EINVAL
+	}
+
+	fd, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_DGRAM|syscall.SOCK_CLOEXEC, 0)
+	if err != nil {
+		return 0, err
+	}
+	defer syscall.Close(fd)
+
+	var ifr ifReq
+	copy(ifr[:], name)
+	err = ioctl(fd, syscall.SIOCGIFFLAGS, unsafe.Pointer(&ifr[0]))
+	if err != nil {
+		return 0, err
+	}
+
+	return linkFlags(*(*uint32)(unsafe.Pointer(&ifr[syscall.IFNAMSIZ]))), nil
+}