FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
node/lib/securepair.js at writev2 · bmehanni/node · GitHub
bmehanni
/
node
Public
forked from
nodejs/node-v0.x-archive
Notifications
You must be signed in to change notification settings
Fork
0
Star
1
Code
Pull requests
0
Actions
Projects
Wiki
Security and quality
0
Insights
Additional navigation options
Code
Pull requests
Actions
Projects
Wiki
Security and quality
Insights
Expand file tree
Breadcrumbs
node
/
lib
/
securepair.js
Copy path
More file actions
More file actions
Latest commit
History
History
History
336 lines (284 loc) · 8.04 KB
Breadcrumbs
node
/
lib
/
securepair.js
Copy path
File metadata and controls
336 lines (284 loc) · 8.04 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
var
util
=
require
(
'util'
)
;
var
events
=
require
(
'events'
)
;
var
stream
=
require
(
'stream'
)
;
var
assert
=
process
.
assert
;
var
debugLevel
=
parseInt
(
process
.
env
.
NODE_DEBUG
,
16
)
;
function
debug
(
)
{
if
(
debugLevel
&
0x2
)
{
util
.
error
.
apply
(
this
,
arguments
)
;
}
}
/* Lazy Loaded crypto object */
var
SecureStream
=
null
;
/**
* Provides a pair of streams to do encrypted communication.
*/
function
SecurePair
(
credentials
,
isServer
)
{
if
(
!
(
this
instanceof
SecurePair
)
)
{
return
new
SecurePair
(
credentials
,
isServer
)
;
}
var
self
=
this
;
try
{
SecureStream
=
process
.
binding
(
'crypto'
)
.
SecureStream
;
}
catch
(
e
)
{
throw
new
Error
(
'node.js not compiled with openssl crypto support.'
)
;
}
events
.
EventEmitter
.
call
(
this
)
;
this
.
_secureEstablished
=
false
;
this
.
_isServer
=
isServer
?
true
:
false
;
this
.
_encWriteState
=
true
;
this
.
_clearWriteState
=
true
;
this
.
_done
=
false
;
var
crypto
=
require
(
"crypto"
)
;
if
(
!
credentials
)
{
this
.
credentials
=
crypto
.
createCredentials
(
)
;
}
else
{
this
.
credentials
=
credentials
;
}
if
(
!
this
.
_isServer
)
{
/* For clients, we will always have either a given ca list or be using default one */
this
.
credentials
.
shouldVerify
=
true
;
}
this
.
_secureEstablished
=
false
;
this
.
_encInPending
=
[
]
;
this
.
_clearInPending
=
[
]
;
this
.
_ssl
=
new
SecureStream
(
this
.
credentials
.
context
,
this
.
_isServer
?
true
:
false
,
this
.
credentials
.
shouldVerify
)
;
/* Acts as a r/w stream to the cleartext side of the stream. */
this
.
cleartext
=
new
stream
.
Stream
(
)
;
this
.
cleartext
.
readable
=
true
;
/* Acts as a r/w stream to the encrypted side of the stream. */
this
.
encrypted
=
new
stream
.
Stream
(
)
;
this
.
encrypted
.
readable
=
true
;
this
.
cleartext
.
write
=
function
(
data
)
{
debug
(
'clearIn data'
)
;
self
.
_clearInPending
.
push
(
data
)
;
self
.
_cycle
(
)
;
return
self
.
_cleartextWriteState
;
}
;
this
.
cleartext
.
pause
=
function
(
)
{
debug
(
'paused cleartext'
)
;
self
.
_cleartextWriteState
=
false
;
}
;
this
.
cleartext
.
resume
=
function
(
)
{
debug
(
'resumed cleartext'
)
;
self
.
_cleartextWriteState
=
true
;
}
;
this
.
cleartext
.
end
=
function
(
err
)
{
debug
(
'cleartext end'
)
;
if
(
!
self
.
_done
)
{
self
.
_ssl
.
shutdown
(
)
;
self
.
_cycle
(
)
;
}
self
.
_destroy
(
err
)
;
}
;
this
.
encrypted
.
write
=
function
(
data
)
{
debug
(
'encIn data'
)
;
self
.
_encInPending
.
push
(
data
)
;
self
.
_cycle
(
)
;
return
self
.
_encryptedWriteState
;
}
;
this
.
encrypted
.
pause
=
function
(
)
{
debug
(
'pause encrypted'
)
;
self
.
_encryptedWriteState
=
false
;
}
;
this
.
encrypted
.
resume
=
function
(
)
{
debug
(
'resume encrypted'
)
;
self
.
_encryptedWriteState
=
true
;
}
;
this
.
encrypted
.
end
=
function
(
err
)
{
debug
(
'encrypted end'
)
;
if
(
!
self
.
_done
)
{
self
.
_ssl
.
shutdown
(
)
;
self
.
_cycle
(
)
;
}
self
.
_destroy
(
err
)
;
}
;
this
.
cleartext
.
on
(
'end'
,
function
(
err
)
{
debug
(
'clearIn end'
)
;
if
(
!
self
.
_done
)
{
self
.
_ssl
.
shutdown
(
)
;
self
.
_cycle
(
)
;
}
self
.
_destroy
(
err
)
;
}
)
;
this
.
cleartext
.
on
(
'close'
,
function
(
)
{
debug
(
'source close'
)
;
self
.
emit
(
'close'
)
;
self
.
_destroy
(
)
;
}
)
;
this
.
encrypted
.
on
(
'end'
,
function
(
)
{
if
(
!
self
.
_done
)
{
self
.
_error
(
new
Error
(
'Encrypted stream ended before secure pair was done'
)
)
;
}
}
)
;
this
.
encrypted
.
on
(
'close'
,
function
(
)
{
if
(
!
self
.
_done
)
{
self
.
_error
(
new
Error
(
'Encrypted stream closed before secure pair was done'
)
)
;
}
}
)
;
this
.
cleartext
.
on
(
'drain'
,
function
(
)
{
debug
(
'source drain'
)
;
self
.
_cycle
(
)
;
self
.
encrypted
.
resume
(
)
;
}
)
;
this
.
encrypted
.
on
(
'drain'
,
function
(
)
{
debug
(
'target drain'
)
;
self
.
_cycle
(
)
;
self
.
cleartext
.
resume
(
)
;
}
)
;
process
.
nextTick
(
function
(
)
{
self
.
_ssl
.
start
(
)
;
self
.
_cycle
(
)
;
}
)
;
}
util
.
inherits
(
SecurePair
,
events
.
EventEmitter
)
;
exports
.
createSecurePair
=
function
(
credentials
,
isServer
)
{
var
pair
=
new
SecurePair
(
credentials
,
isServer
)
;
return
pair
;
}
;
/**
* Attempt to cycle OpenSSLs buffers in various directions.
*
* An SSL Connection can be viewed as four separate piplines,
* interacting with one has no connection to the behavoir of
* any of the other 3 -- This might not sound reasonable,
* but consider things like mid-stream renegotiation of
* the ciphers.
*
* The four pipelines, using terminology of the client (server is just reversed):
* 1) Encrypted Output stream (Writing encrypted data to peer)
* 2) Encrypted Input stream (Reading encrypted data from peer)
* 3) Cleartext Output stream (Decrypted content from the peer)
* 4) Cleartext Input stream (Cleartext content to send to the peer)
*
* This function attempts to pull any available data out of the Cleartext
* input stream (#4), and the Encrypted input stream (#2). Then it pushes
* any data available from the cleartext output stream (#3), and finally
* from the Encrypted output stream (#1)
*
* It is called whenever we do something with OpenSSL -- post reciving content,
* trying to flush, trying to change ciphers, or shutting down the connection.
*
* Because it is also called everywhere, we also check if the connection
* has completed negotiation and emit 'secure' from here if it has.
*/
SecurePair
.
prototype
.
_cycle
=
function
(
)
{
if
(
this
.
_done
)
{
return
;
}
var
self
=
this
;
var
rv
;
var
tmp
;
var
bytesRead
;
var
bytesWritten
;
var
chunkBytes
;
var
chunk
=
null
;
var
pool
=
null
;
while
(
this
.
_encInPending
.
length
>
0
)
{
tmp
=
this
.
_encInPending
.
shift
(
)
;
try
{
debug
(
'writng from encIn'
)
;
rv
=
this
.
_ssl
.
encIn
(
tmp
,
0
,
tmp
.
length
)
;
}
catch
(
e
)
{
return
this
.
_error
(
e
)
;
}
if
(
rv
===
0
)
{
this
.
_encInPending
.
unshift
(
tmp
)
;
break
;
}
assert
(
rv
===
tmp
.
length
)
;
}
while
(
this
.
_clearInPending
.
length
>
0
)
{
tmp
=
this
.
_clearInPending
.
shift
(
)
;
try
{
debug
(
'writng from clearIn'
)
;
rv
=
this
.
_ssl
.
clearIn
(
tmp
,
0
,
tmp
.
length
)
;
}
catch
(
e
)
{
return
this
.
_error
(
e
)
;
}
if
(
rv
===
0
)
{
this
.
_clearInPending
.
unshift
(
tmp
)
;
break
;
}
assert
(
rv
===
tmp
.
length
)
;
}
function
mover
(
reader
,
writer
,
checker
)
{
var
bytesRead
;
var
pool
;
var
chunkBytes
;
do
{
bytesRead
=
0
;
chunkBytes
=
0
;
pool
=
new
Buffer
(
4096
)
;
pool
.
used
=
0
;
do
{
try
{
chunkBytes
=
reader
(
pool
,
pool
.
used
+
bytesRead
,
pool
.
length
-
pool
.
used
-
bytesRead
)
}
catch
(
e
)
{
return
self
.
_error
(
e
)
;
}
if
(
chunkBytes
>=
0
)
{
bytesRead
+=
chunkBytes
;
}
}
while
(
(
chunkBytes
>
0
)
&&
(
pool
.
used
+
bytesRead
<
pool
.
length
)
)
;
if
(
bytesRead
>
0
)
{
chunk
=
pool
.
slice
(
0
,
bytesRead
)
;
writer
(
chunk
)
;
}
}
while
(
checker
(
bytesRead
)
)
;
}
mover
(
function
(
pool
,
offset
,
length
)
{
debug
(
'reading from clearOut'
)
;
return
self
.
_ssl
.
clearOut
(
pool
,
offset
,
length
)
;
}
,
function
(
chunk
)
{
self
.
cleartext
.
emit
(
'data'
,
chunk
)
;
}
,
function
(
bytesRead
)
{
return
bytesRead
>
0
&&
self
.
_cleartextWriteState
===
true
;
}
)
;
mover
(
function
(
pool
,
offset
,
length
)
{
debug
(
'reading from encOut'
)
;
return
self
.
_ssl
.
encOut
(
pool
,
offset
,
length
)
;
}
,
function
(
chunk
)
{
self
.
encrypted
.
emit
(
'data'
,
chunk
)
;
}
,
function
(
bytesRead
)
{
return
bytesRead
>
0
&&
self
.
_encryptedWriteState
===
true
;
}
)
;
if
(
!
this
.
_secureEstablished
&&
this
.
_ssl
.
isInitFinished
(
)
)
{
this
.
_secureEstablished
=
true
;
debug
(
'secure established'
)
;
this
.
emit
(
'secure'
)
;
this
.
_cycle
(
)
;
}
}
;
SecurePair
.
prototype
.
_destroy
=
function
(
err
)
{
if
(
!
this
.
_done
)
{
this
.
_done
=
true
;
this
.
_ssl
.
close
(
)
;
delete
this
.
_ssl
;
this
.
emit
(
'end'
,
err
)
;
}
}
;
SecurePair
.
prototype
.
_error
=
function
(
err
)
{
this
.
emit
(
'error'
,
err
)
;
}
;
SecurePair
.
prototype
.
getPeerCertificate
=
function
(
err
)
{
return
this
.
_ssl
.
getPeerCertificate
(
)
;
}
;
SecurePair
.
prototype
.
getCipher
=
function
(
err
)
{
return
this
.
_ssl
.
getCurrentCipher
(
)
;
}
;
Back
|
FazBrowse Home
|
New Git URL