forked from linuxdeepin/go-x11-client
-
Notifications
You must be signed in to change notification settings - Fork 0
/
record.go
313 lines (257 loc) · 6.14 KB
/
record.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
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
package record
import (
"github.com/linuxdeepin/go-x11-client"
)
// size: 2b
type Range8 struct {
First uint8
Last uint8
}
func writeRange8(b *x.FixedSizeBuf, v Range8) {
b.Write1b(v.First)
b.Write1b(v.Last)
}
func readRange8(r *x.Reader) Range8 {
var v Range8
v.First = r.Read1b()
v.Last = r.Read1b()
return v
}
// size: 4b
type Range16 struct {
First uint16
Last uint16
}
func readRange16(r *x.Reader) Range16 {
var v Range16
v.First = r.Read2b()
v.Last = r.Read2b()
return v
}
func writeRange16(b *x.FixedSizeBuf, v Range16) {
b.Write2b(v.First)
b.Write2b(v.Last)
}
// size: 6b
type ExtRange struct {
Major Range8
Minor Range16
}
func readExtRange(r *x.Reader) (v ExtRange) {
v.Major = readRange8(r)
v.Minor = readRange16(r)
return
}
func writeExtRange(b *x.FixedSizeBuf, v ExtRange) {
writeRange8(b, v.Major)
writeRange16(b, v.Minor)
}
// size: 6 * 4b
type Range struct {
CoreRequests Range8
CoreReplies Range8
ExtRequests ExtRange
ExtReplies ExtRange
DeliveredEvents Range8
DeviceEvents Range8
Errors Range8
ClientStarted bool
ClientDied bool
}
func writeRange(b *x.FixedSizeBuf, v *Range) {
writeRange8(b, v.CoreRequests)
writeRange8(b, v.CoreReplies)
writeExtRange(b, v.ExtRequests)
writeExtRange(b, v.ExtReplies)
writeRange8(b, v.DeliveredEvents)
writeRange8(b, v.DeviceEvents)
writeRange8(b, v.Errors)
b.WriteBool(v.ClientStarted).
WriteBool(v.ClientDied)
}
func readRange(r *x.Reader, v *Range) {
v.CoreRequests = readRange8(r)
v.CoreReplies = readRange8(r)
v.ExtRequests = readExtRange(r)
v.ExtRequests = readExtRange(r)
v.DeliveredEvents = readRange8(r)
v.DeviceEvents = readRange8(r)
v.Errors = readRange8(r)
v.ClientStarted = r.ReadBool()
v.ClientDied = r.ReadBool()
}
type ClientInfo struct {
ClientResource ClientSpec
InterceptedProtocol []Range
}
func readClientInfo(r *x.Reader, v *ClientInfo) error {
if !r.RemainAtLeast4b(2) {
return x.ErrDataLenShort
}
v.ClientResource = ClientSpec(r.Read4b())
interceptedProtocolLen := int(r.Read4b()) // 2
if interceptedProtocolLen > 0 {
if !r.RemainAtLeast4b(6 * interceptedProtocolLen) {
return x.ErrDataLenShort
}
v.InterceptedProtocol = make([]Range, interceptedProtocolLen)
for i := 0; i < interceptedProtocolLen; i++ {
readRange(r, &v.InterceptedProtocol[i])
}
}
return nil
}
// #WREQ
func encodeQueryVersion(majorVersion, minorVersion uint16) (b x.RequestBody) {
b.AddBlock(1).
Write2b(majorVersion).
Write2b(minorVersion).
End()
return
}
type QueryVersionReply struct {
MajorVersion uint16
MinorVersion uint16
}
func readQueryVersionReply(r *x.Reader, v *QueryVersionReply) error {
if !r.RemainAtLeast4b(3) {
return x.ErrDataLenShort
}
r.ReadPad(8)
v.MajorVersion = r.Read2b()
v.MinorVersion = r.Read2b() // 3
return nil
}
// #WREQ
func encodeCreateContext(context Context, elementHeader ElementHeader,
clientSpecs []ClientSpec, ranges []Range) (b x.RequestBody) {
clientSpecsLen := len(clientSpecs)
rangesLen := len(ranges)
b0 := b.AddBlock(4 + clientSpecsLen + rangesLen*6).
Write4b(uint32(context)).
Write1b(uint8(elementHeader)).
WritePad(3).
Write4b(uint32(clientSpecsLen)).
Write4b(uint32(rangesLen))
for _, clientSpec := range clientSpecs {
b0.Write4b(uint32(clientSpec))
}
for i := 0; i < rangesLen; i++ {
writeRange(b0, &ranges[i])
}
b0.End()
return
}
// #WREQ
func encodeRegisterClients(context Context, elementHeader ElementHeader,
clientSpecs []ClientSpec, ranges []Range) (b x.RequestBody) {
clientSpecsLen := len(clientSpecs)
rangesLen := len(ranges)
b0 := b.AddBlock(4 + clientSpecsLen + rangesLen*6).
Write4b(uint32(context)).
Write1b(uint8(elementHeader)).
WritePad(3).
Write4b(uint32(clientSpecsLen)).
Write4b(uint32(rangesLen))
for _, clientSpec := range clientSpecs {
b0.Write4b(uint32(clientSpec))
}
for i := 0; i < rangesLen; i++ {
writeRange(b0, &ranges[i])
}
b0.End()
return
}
// #WREQ
func encodeUnregisterClients(context Context, clientSpecs []ClientSpec) (b x.RequestBody) {
clientSpecsLen := len(clientSpecs)
b0 := b.AddBlock(2 + clientSpecsLen).
Write4b(uint32(context)).
Write4b(uint32(clientSpecsLen))
for _, clientSpec := range clientSpecs {
b0.Write4b(uint32(clientSpec))
}
b0.End()
return
}
// #WREQ
func encodeGetContext(context Context) (b x.RequestBody) {
b.AddBlock(1).
Write4b(uint32(context)).
End()
return
}
type GetContextReply struct {
Enabled bool
ElementHeader ElementHeader
InterceptedClients []ClientInfo
}
func readGetContextReply(r *x.Reader, v *GetContextReply) error {
if !r.RemainAtLeast4b(4) {
return x.ErrDataLenShort
}
enabled, _ := r.ReadReplyHeader()
v.Enabled = x.Uint8ToBool(enabled)
v.ElementHeader = ElementHeader(r.Read1b())
r.ReadPad(3)
interceptedClientsLen := int(r.Read4b()) // 4
if interceptedClientsLen > 0 {
v.InterceptedClients = make([]ClientInfo, interceptedClientsLen)
for i := 0; i < interceptedClientsLen; i++ {
err := readClientInfo(r, &v.InterceptedClients[i])
if err != nil {
return err
}
}
}
return nil
}
// #WREQ
func encodeEnableContext(context Context) (b x.RequestBody) {
b.AddBlock(1).
Write4b(uint32(context)).
End()
return
}
type EnableContextReply struct {
Category uint8
ElementHeader ElementHeader
ClientSwapped bool
XidBase uint32
ServerTime x.Timestamp
RecSequenceNum uint32
Data []uint8
}
func readEnableContextReply(r *x.Reader, v *EnableContextReply) error {
if !r.RemainAtLeast4b(8) {
return x.ErrDataLenShort
}
var replyLen uint32
v.Category, replyLen = r.ReadReplyHeader() // 2
v.ElementHeader = ElementHeader(r.Read1b())
v.ClientSwapped = r.ReadBool()
r.ReadPad(2) // 3
v.XidBase = r.Read4b()
v.ServerTime = x.Timestamp(r.Read4b())
v.RecSequenceNum = r.Read4b() // 6
// unused
r.ReadPad(8) // 8
dataLen := 4 * int(replyLen)
var err error
v.Data, err = r.ReadBytes(dataLen)
return err
}
// #WREQ
func encodeDisableContext(context Context) (b x.RequestBody) {
b.AddBlock(1).
Write4b(uint32(context)).
End()
return
}
// #WREQ
func encodeFreeContext(context Context) (b x.RequestBody) {
b.AddBlock(1).
Write4b(uint32(context)).
End()
return
}