IP_STATUS_FILE and routing improvements (#130)

- Obtains VPN public IP address from routing table
- Logs and writes VPN Public IP address to `/ip` as soon as VPN is up
- Obtain port forward, logs it and writes it as soon as VPN is up
- Routing fully refactored and tested
- Routing reads from `/proc/net/route`
- Routing mutates the routes using `ip route ...`

internal/routing/mockCommander_test.go

@@ -0,0 +1,76 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/qdm12/golibs/command (interfaces: Commander)
+
+// Package routing is a generated GoMock package.
+package routing
+
+import (
+	gomock "github.com/golang/mock/gomock"
+	io "io"
+	reflect "reflect"
+)
+
+// MockCommander is a mock of Commander interface
+type MockCommander struct {
+	ctrl     *gomock.Controller
+	recorder *MockCommanderMockRecorder
+}
+
+// MockCommanderMockRecorder is the mock recorder for MockCommander
+type MockCommanderMockRecorder struct {
+	mock *MockCommander
+}
+
+// NewMockCommander creates a new mock instance
+func NewMockCommander(ctrl *gomock.Controller) *MockCommander {
+	mock := &MockCommander{ctrl: ctrl}
+	mock.recorder = &MockCommanderMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (m *MockCommander) EXPECT() *MockCommanderMockRecorder {
+	return m.recorder
+}
+
+// Run mocks base method
+func (m *MockCommander) Run(arg0 string, arg1 ...string) (string, error) {
+	m.ctrl.T.Helper()
+	varargs := []interface{}{arg0}
+	for _, a := range arg1 {
+		varargs = append(varargs, a)
+	}
+	ret := m.ctrl.Call(m, "Run", varargs...)
+	ret0, _ := ret[0].(string)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// Run indicates an expected call of Run
+func (mr *MockCommanderMockRecorder) Run(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	varargs := append([]interface{}{arg0}, arg1...)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Run", reflect.TypeOf((*MockCommander)(nil).Run), varargs...)
+}
+
+// Start mocks base method
+func (m *MockCommander) Start(arg0 string, arg1 ...string) (io.ReadCloser, io.ReadCloser, func() error, error) {
+	m.ctrl.T.Helper()
+	varargs := []interface{}{arg0}
+	for _, a := range arg1 {
+		varargs = append(varargs, a)
+	}
+	ret := m.ctrl.Call(m, "Start", varargs...)
+	ret0, _ := ret[0].(io.ReadCloser)
+	ret1, _ := ret[1].(io.ReadCloser)
+	ret2, _ := ret[2].(func() error)
+	ret3, _ := ret[3].(error)
+	return ret0, ret1, ret2, ret3
+}
+
+// Start indicates an expected call of Start
+func (mr *MockCommanderMockRecorder) Start(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	varargs := append([]interface{}{arg0}, arg1...)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Start", reflect.TypeOf((*MockCommander)(nil).Start), varargs...)
+}