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
|
/*****************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* $Id$
*
* argv1 = URL
* argv2 = proxy with embedded user+password
*/
#include "test.h"
struct data {
char trace_ascii; /* 1 or 0 */
};
static
void dump(const char *text,
FILE *stream, unsigned char *ptr, size_t size,
char nohex)
{
size_t i;
size_t c;
unsigned int width=0x10;
if(nohex)
/* without the hex output, we can fit more on screen */
width = 0x40;
fprintf(stream, "%s, %d bytes (0x%x)\n", text, (int)size, (int)size);
for(i=0; i<size; i+= width) {
fprintf(stream, "%04x: ", (int)i);
if(!nohex) {
/* hex not disabled, show it */
for(c = 0; c < width; c++)
if(i+c < size)
fprintf(stream, "%02x ", ptr[i+c]);
else
fputs(" ", stream);
}
for(c = 0; (c < width) && (i+c < size); c++) {
/* check for 0D0A; if found, skip past and start a new line of output */
if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
i+=(c+2-width);
break;
}
fprintf(stream, "%c",
(ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.');
/* check again for 0D0A, to avoid an extra \n if it's at width */
if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
i+=(c+3-width);
break;
}
}
fputc('\n', stream); /* newline */
}
fflush(stream);
}
static
int my_trace(CURL *handle, curl_infotype type,
unsigned char *data, size_t size,
void *userp)
{
struct data *config = (struct data *)userp;
const char *text;
(void)handle; /* prevent compiler warning */
switch (type) {
case CURLINFO_TEXT:
fprintf(stderr, "== Info: %s", data);
default: /* in case a new one is introduced to shock us */
return 0;
case CURLINFO_HEADER_OUT:
text = "=> Send header";
break;
case CURLINFO_DATA_OUT:
text = "=> Send data";
break;
case CURLINFO_SSL_DATA_OUT:
text = "=> Send SSL data";
break;
case CURLINFO_HEADER_IN:
text = "<= Recv header";
break;
case CURLINFO_DATA_IN:
text = "<= Recv data";
break;
case CURLINFO_SSL_DATA_IN:
text = "<= Recv SSL data";
break;
}
dump(text, stderr, data, size, config->trace_ascii);
return 0;
}
static size_t current_offset = 0;
char data[70000]; /* MUST be more than 64k OR MAX_INITIAL_POST_SIZE */
static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
{
size_t amount = nmemb * size; /* Total bytes curl wants */
size_t available = sizeof data - current_offset; /* What we have to give */
size_t given = amount < available ? amount : available; /* What is given */
(void)stream;
memcpy(ptr, data + current_offset, given);
current_offset += given;
return given;
}
static size_t write_callback(void *ptr, size_t size, size_t nmemb, void *stream)
{
printf("%.*s", size * nmemb, (char *)ptr);
(void)stream;
return size * nmemb;
}
static curlioerr ioctl_callback(CURL * handle, int cmd, void *clientp)
{
(void)clientp;
if (cmd == CURLIOCMD_RESTARTREAD ) {
printf("APPLICATION: recieved a CURLIOCMD_RESTARTREAD request\n");
printf("APPLICATION: ** REWINDING! **\n");
current_offset = 0;
return CURLIOE_OK;
}
(void)handle;
return CURLIOE_UNKNOWNCMD;
}
int test(char *URL)
{
CURL *curl;
CURLcode res;
struct data config;
size_t i;
char fill[] = "test data";
config.trace_ascii = 1; /* enable ascii tracing */
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &config);
/* the DEBUGFUNCTION has no effect until we enable VERBOSE */
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
/* setup repeated data string */
for (i=0; i < sizeof data; ++i)
data[i] = fill[i % sizeof fill];
/* Post */
curl_easy_setopt(curl, CURLOPT_POST, 1);
/* Setup read callback */
curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, sizeof data);
curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
/* Write callback */
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
/* Ioctl function */
curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, ioctl_callback);
curl_easy_setopt(curl, CURLOPT_PROXY, libtest_arg2);
curl_easy_setopt(curl, CURLOPT_URL, URL);
/* Accept any auth. But for this bug configure proxy with DIGEST, basic might work too, not NTLM */
curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
res = curl_easy_perform(curl);
fprintf(stderr, "curl_east_perform = %d\n", res);
/* always cleanup */
curl_easy_cleanup(curl);
}
return 0;
}
|
