wip: migrate to mono-repo. SPN has already been moved to spn/

service/network/socket/socket.go

@@ -0,0 +1,120 @@
+package socket
+
+import (
+	"net"
+	"sync"
+)
+
+const (
+	// UndefinedProcessID signifies that the process ID is unknown.
+	// It must match portmaster/process.UndefinedProcessID
+	// It is duplicated here because of import loops.
+	UndefinedProcessID = -1
+)
+
+// ConnectionInfo holds socket information returned by the system.
+type ConnectionInfo struct {
+	sync.Mutex
+
+	Local  Address
+	Remote Address
+	PID    int
+	UID    int
+	Inode  int
+}
+
+// BindInfo holds socket information returned by the system.
+type BindInfo struct {
+	sync.Mutex
+
+	Local Address
+	PID   int
+	UID   int
+	Inode int
+
+	ListensAny bool
+}
+
+// Address is an IP + Port pair.
+type Address struct {
+	IP   net.IP
+	Port uint16
+}
+
+// Info is a generic interface to both ConnectionInfo and BindInfo.
+type Info interface {
+	GetPID() int
+	SetPID(int)
+	GetUID() int
+	GetUIDandInode() (int, int)
+}
+
+// GetPID returns the PID.
+func (i *ConnectionInfo) GetPID() int {
+	i.Lock()
+	defer i.Unlock()
+
+	return i.PID
+}
+
+// SetPID sets the PID to the given value.
+func (i *ConnectionInfo) SetPID(pid int) {
+	i.Lock()
+	defer i.Unlock()
+
+	i.PID = pid
+}
+
+// GetUID returns the UID.
+func (i *ConnectionInfo) GetUID() int {
+	i.Lock()
+	defer i.Unlock()
+
+	return i.UID
+}
+
+// GetUIDandInode returns the UID and Inode.
+func (i *ConnectionInfo) GetUIDandInode() (int, int) {
+	i.Lock()
+	defer i.Unlock()
+
+	return i.UID, i.Inode
+}
+
+// GetPID returns the PID.
+func (i *BindInfo) GetPID() int {
+	i.Lock()
+	defer i.Unlock()
+
+	return i.PID
+}
+
+// SetPID sets the PID to the given value.
+func (i *BindInfo) SetPID(pid int) {
+	i.Lock()
+	defer i.Unlock()
+
+	i.PID = pid
+}
+
+// GetUID returns the UID.
+func (i *BindInfo) GetUID() int {
+	i.Lock()
+	defer i.Unlock()
+
+	return i.UID
+}
+
+// GetUIDandInode returns the UID and Inode.
+func (i *BindInfo) GetUIDandInode() (int, int) {
+	i.Lock()
+	defer i.Unlock()
+
+	return i.UID, i.Inode
+}
+
+// Compile time checks.
+var (
+	_ Info = new(ConnectionInfo)
+	_ Info = new(BindInfo)
+)