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
|
/*
* Functions to trace SSL protocol behavior in DEBUG builds.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <stdarg.h>
#include "cert.h"
#include "ssl.h"
#include "sslimpl.h"
#include "sslproto.h"
#include "prprf.h"
#if defined(DEBUG) || defined(TRACE)
static const char *hex = "0123456789abcdef";
static const char printable[257] = {
"................" /* 0x */
"................" /* 1x */
" !\"#$%&'()*+,-./" /* 2x */
"0123456789:;<=>?" /* 3x */
"@ABCDEFGHIJKLMNO" /* 4x */
"PQRSTUVWXYZ[\\]^_" /* 5x */
"`abcdefghijklmno" /* 6x */
"pqrstuvwxyz{|}~." /* 7x */
"................" /* 8x */
"................" /* 9x */
"................" /* ax */
"................" /* bx */
"................" /* cx */
"................" /* dx */
"................" /* ex */
"................" /* fx */
};
void ssl_PrintBuf(sslSocket *ss, const char *msg, const void *vp, int len)
{
const unsigned char *cp = (const unsigned char *)vp;
char buf[80];
char *bp;
char *ap;
if (ss) {
SSL_TRACE(("%d: SSL[%d]: %s [Len: %d]", SSL_GETPID(), ss->fd,
msg, len));
} else {
SSL_TRACE(("%d: SSL: %s [Len: %d]", SSL_GETPID(), msg, len));
}
memset(buf, ' ', sizeof buf);
bp = buf;
ap = buf + 50;
while (--len >= 0) {
unsigned char ch = *cp++;
*bp++ = hex[(ch >> 4) & 0xf];
*bp++ = hex[ch & 0xf];
*bp++ = ' ';
*ap++ = printable[ch];
if (ap - buf >= 66) {
*ap = 0;
SSL_TRACE((" %s", buf));
memset(buf, ' ', sizeof buf);
bp = buf;
ap = buf + 50;
}
}
if (bp > buf) {
*ap = 0;
SSL_TRACE((" %s", buf));
}
}
#define LEN(cp) (((cp)[0] << 8) | ((cp)[1]))
static void PrintType(sslSocket *ss, char *msg)
{
if (ss) {
SSL_TRACE(("%d: SSL[%d]: dump-msg: %s", SSL_GETPID(), ss->fd,
msg));
} else {
SSL_TRACE(("%d: SSL: dump-msg: %s", SSL_GETPID(), msg));
}
}
static void PrintInt(sslSocket *ss, char *msg, unsigned v)
{
if (ss) {
SSL_TRACE(("%d: SSL[%d]: %s=%u", SSL_GETPID(), ss->fd,
msg, v));
} else {
SSL_TRACE(("%d: SSL: %s=%u", SSL_GETPID(), msg, v));
}
}
/* PrintBuf is just like ssl_PrintBuf above, except that:
* a) It prefixes each line of the buffer with "XX: SSL[xxx] "
* b) It dumps only hex, not ASCII.
*/
static void PrintBuf(sslSocket *ss, char *msg, unsigned char *cp, int len)
{
char buf[80];
char *bp;
if (ss) {
SSL_TRACE(("%d: SSL[%d]: %s [Len: %d]",
SSL_GETPID(), ss->fd, msg, len));
} else {
SSL_TRACE(("%d: SSL: %s [Len: %d]",
SSL_GETPID(), msg, len));
}
bp = buf;
while (--len >= 0) {
unsigned char ch = *cp++;
*bp++ = hex[(ch >> 4) & 0xf];
*bp++ = hex[ch & 0xf];
*bp++ = ' ';
if (bp + 4 > buf + 50) {
*bp = 0;
if (ss) {
SSL_TRACE(("%d: SSL[%d]: %s",
SSL_GETPID(), ss->fd, buf));
} else {
SSL_TRACE(("%d: SSL: %s", SSL_GETPID(), buf));
}
bp = buf;
}
}
if (bp > buf) {
*bp = 0;
if (ss) {
SSL_TRACE(("%d: SSL[%d]: %s",
SSL_GETPID(), ss->fd, buf));
} else {
SSL_TRACE(("%d: SSL: %s", SSL_GETPID(), buf));
}
}
}
void ssl_DumpMsg(sslSocket *ss, unsigned char *bp, unsigned len)
{
switch (bp[0]) {
case SSL_MT_ERROR:
PrintType(ss, "Error");
PrintInt(ss, "error", LEN(bp+1));
break;
case SSL_MT_CLIENT_HELLO:
{
unsigned lcs = LEN(bp+3);
unsigned ls = LEN(bp+5);
unsigned lc = LEN(bp+7);
PrintType(ss, "Client-Hello");
PrintInt(ss, "version (Major)", bp[1]);
PrintInt(ss, "version (minor)", bp[2]);
PrintBuf(ss, "cipher-specs", bp+9, lcs);
PrintBuf(ss, "session-id", bp+9+lcs, ls);
PrintBuf(ss, "challenge", bp+9+lcs+ls, lc);
}
break;
case SSL_MT_CLIENT_MASTER_KEY:
{
unsigned lck = LEN(bp+4);
unsigned lek = LEN(bp+6);
unsigned lka = LEN(bp+8);
PrintType(ss, "Client-Master-Key");
PrintInt(ss, "cipher-choice", bp[1]);
PrintInt(ss, "key-length", LEN(bp+2));
PrintBuf(ss, "clear-key", bp+10, lck);
PrintBuf(ss, "encrypted-key", bp+10+lck, lek);
PrintBuf(ss, "key-arg", bp+10+lck+lek, lka);
}
break;
case SSL_MT_CLIENT_FINISHED:
PrintType(ss, "Client-Finished");
PrintBuf(ss, "connection-id", bp+1, len-1);
break;
case SSL_MT_SERVER_HELLO:
{
unsigned lc = LEN(bp+5);
unsigned lcs = LEN(bp+7);
unsigned lci = LEN(bp+9);
PrintType(ss, "Server-Hello");
PrintInt(ss, "session-id-hit", bp[1]);
PrintInt(ss, "certificate-type", bp[2]);
PrintInt(ss, "version (Major)", bp[3]);
PrintInt(ss, "version (minor)", bp[3]);
PrintBuf(ss, "certificate", bp+11, lc);
PrintBuf(ss, "cipher-specs", bp+11+lc, lcs);
PrintBuf(ss, "connection-id", bp+11+lc+lcs, lci);
}
break;
case SSL_MT_SERVER_VERIFY:
PrintType(ss, "Server-Verify");
PrintBuf(ss, "challenge", bp+1, len-1);
break;
case SSL_MT_SERVER_FINISHED:
PrintType(ss, "Server-Finished");
PrintBuf(ss, "session-id", bp+1, len-1);
break;
case SSL_MT_REQUEST_CERTIFICATE:
PrintType(ss, "Request-Certificate");
PrintInt(ss, "authentication-type", bp[1]);
PrintBuf(ss, "certificate-challenge", bp+2, len-2);
break;
case SSL_MT_CLIENT_CERTIFICATE:
{
unsigned lc = LEN(bp+2);
unsigned lr = LEN(bp+4);
PrintType(ss, "Client-Certificate");
PrintInt(ss, "certificate-type", bp[1]);
PrintBuf(ss, "certificate", bp+6, lc);
PrintBuf(ss, "response", bp+6+lc, lr);
}
break;
default:
ssl_PrintBuf(ss, "sending *unknown* message type", bp, len);
return;
}
}
void
ssl_Trace(const char *format, ... )
{
char buf[2000];
va_list args;
if (ssl_trace_iob) {
va_start(args, format);
PR_vsnprintf(buf, sizeof(buf), format, args);
va_end(args);
fputs(buf, ssl_trace_iob);
fputs("\n", ssl_trace_iob);
}
}
#endif
|
