/
proxyPriv.go
263 lines (224 loc) · 6.23 KB
/
proxyPriv.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: GPL-3.0-or-later
package proxy
import (
"errors"
"net"
"os"
"path/filepath"
"strconv"
"github.com/godbus/dbus/v5"
"github.com/linuxdeepin/deepin-network-proxy/cgroups"
"github.com/linuxdeepin/deepin-network-proxy/com"
"github.com/linuxdeepin/deepin-network-proxy/config"
"github.com/linuxdeepin/deepin-network-proxy/define"
"github.com/linuxdeepin/deepin-network-proxy/iproute"
"github.com/linuxdeepin/deepin-network-proxy/iptables"
"github.com/linuxdeepin/deepin-network-proxy/tproxy"
"github.com/linuxdeepin/go-lib/dbusutil"
"github.com/linuxdeepin/go-lib/log"
)
var logger *log.Logger
const (
BusServiceName = "org.deepin.dde.NetworkProxy1"
BusPath = "/org/deepin/dde/NetworkProxy1"
BusInterface = BusServiceName
)
// must ignore proxy proc
var mainProxy = []string{
"/usr/lib/deepin-daemon/dde-proxy",
"Qv2ray",
}
type proxyPrv struct {
scope define.Scope
priority define.Priority
// proxy message
Proxies config.ScopeProxies
Proxy config.Proxy // current proxy
// if proxy opened
Enabled bool
// handler manager
manager *Manager
// listener
tcpHandler net.Listener
udpHandler net.PacketConn
// cgroup controller
controller *cgroups.Controller
// iptables chain rule slice[3]
chains [2]*iptables.Chain
// route rule
ipRule *iproute.Rule
// handler manager
handlerMgr *tproxy.HandlerMgr
dnsProxy *proxyDNS
// handler
uid uint32
gid uint32
// stop chan
// stop bool
}
// init proxy private
func initProxyPrv(scope define.Scope, priority define.Priority) *proxyPrv {
prv := &proxyPrv{
scope: scope,
priority: priority,
handlerMgr: tproxy.NewHandlerMgr(scope),
// stop: true,
Proxies: config.ScopeProxies{
Proxies: make(map[string][]config.Proxy),
ProxyProgram: []string{},
WhiteList: []string{},
},
}
prv.dnsProxy = newProxyDNS(prv)
return prv
}
// proxy prepare
func (mgr *proxyPrv) startRedirect() error {
// clean old redirect
_ = mgr.firstClean()
// make sure manager start init
mgr.manager.Start()
// create cgroups
err := mgr.createCGroupController()
if err != nil {
logger.Warning("[%s] create cgroup failed, err: %v", mgr.scope, err)
}
// create iptables
err = mgr.createTable()
if err != nil {
logger.Warning("[%s] create iptables failed, err: %v", mgr.scope, err)
return err
}
err = mgr.appendRule()
if err != nil {
logger.Warning("[%s] append iptables failed, err: %v", mgr.scope, err)
return err
}
err = mgr.createIpRule()
if err != nil {
logger.Warning("[%s] create ip rule failed, err: %v", err)
return err
}
logger.Debugf("[%s] start tproxy iptables cgroups ipRule success", mgr.scope)
//// first adjust cgroups
//err = mgr.firstAdjustCGroups()
//if err != nil {
// logger.Warningf("[%s] first adjust controller failed, err: %v", mgr.scope, err)
// return err
//}
//logger.Debugf("[%s] first adjust controller success", mgr.scope)
return nil
}
//
func (mgr *proxyPrv) stopRedirect() error {
// release iptables rules
err := mgr.releaseRule()
if err != nil {
logger.Warningf("[%s] release iptables failed, err: %v", mgr.scope, err)
return err
}
_ = mgr.attachBackUser()
// release cgroups
err = mgr.releaseController()
if err != nil {
logger.Warningf("[%s] release controller failed, err: %v", mgr.scope, err)
return err
}
err = mgr.releaseIpRule()
if err != nil {
logger.Warningf("[%s] release ipRule failed, err: %v", mgr.scope, err)
}
// try to release manager
err = mgr.manager.release()
if err != nil {
logger.Warningf("[%s] release manager failed, err: %v", mgr.scope, err)
return err
}
logger.Debugf("[%s] stop tproxy iptables cgroups ipRule success", mgr.scope)
return nil
}
// load config
func (mgr *proxyPrv) loadConfig() {
// load proxy from manager
mgr.Proxies, _ = mgr.manager.config.GetScopeProxies(mgr.scope)
logger.Debugf("[%s] load config success, config: %v", mgr.scope, mgr.Proxies)
}
func (mgr *proxyPrv) saveManager(manager *Manager) {
mgr.manager = manager
}
// write config
func (mgr *proxyPrv) writeConfig() error {
// set and write config
mgr.manager.config.SetScopeProxies(mgr.scope, mgr.Proxies)
err := mgr.manager.WriteConfig()
if err != nil {
logger.Warning("[%s] write config failed, err:%v", mgr.scope, err)
return err
}
return nil
}
// first clean
func (mgr *proxyPrv) firstClean() error {
// get config path
path, err := com.GetConfigDir()
if err != nil {
logger.Warningf("[%s] run first clean failed, config err: %v", mgr.scope, err)
return err
}
// get script file path
path = filepath.Join(path, define.ScriptName)
// run script
buf, err := com.RunScript(path, []string{"clear_" + mgr.scope.String()})
if err != nil {
logger.Debugf("[%s] run first clean script failed, out: %s, err: %v", mgr.scope, string(buf), err)
return err
}
logger.Debugf("[%s] run first clean script success", mgr.scope)
return nil
}
// cgroups
func (mgr *proxyPrv) GetCGroups() (string, *dbus.Error) {
if mgr.controller == nil {
return "", nil
}
path := mgr.controller.GetCGroupPath()
// path := "/sys/fs/cgroup/unified/App.slice/cgroups.procs"
_, err := os.Stat(path)
if err != nil {
logger.Warningf("app cgroups not exist, err: %v", err)
return "", dbusutil.ToError(err)
}
return path, nil
}
// add pid to proc
func (mgr *proxyPrv) AddProc(pid int32) *dbus.Error {
// controller
if mgr.controller == nil {
return dbusutil.ToError(errors.New("controller not exist"))
}
// attach pid
err := cgroups.Attach(strconv.Itoa(int(pid)), mgr.controller.GetControlPath())
if err != nil {
logger.Debugf("attach %d to %s failed, err: %v", pid, mgr.controller.GetControlPath(), err)
return dbusutil.ToError(err)
}
logger.Debugf("attach %d to %s success", pid, mgr.controller.GetControlPath())
return nil
}
//func (mgr *proxyPrv) CreateCGroups(sender dbus.Sender, cgroup string) *dbus.Error {
// con, err := dbusutil.NewSystemService()
// if err != nil {
// logger.Warningf("get session service failed, err: %v", err)
// return dbusutil.ToError(err)
// }
// uid, err := con.GetConnUID(string(sender))
// if err != nil {
// logger.Warningf("get name owner failed, err: %v", err)
// return dbusutil.ToError(err)
// }
// mgr.uid = int(uid)
// mgr.cgroup = cgroup
// return nil
//}