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
|
/*
* Helper method for urllib to fetch the proxy configuration settings
* using the SystemConfiguration framework.
*/
#include <Python.h>
#include <SystemConfiguration/SystemConfiguration.h>
static int32_t
cfnum_to_int32(CFNumberRef num)
{
int32_t result;
CFNumberGetValue(num, kCFNumberSInt32Type, &result);
return result;
}
static PyObject*
cfstring_to_pystring(CFStringRef ref)
{
const char* s;
s = CFStringGetCStringPtr(ref, kCFStringEncodingUTF8);
if (s) {
return PyUnicode_DecodeUTF8(
s, strlen(s), NULL);
} else {
CFIndex len = CFStringGetLength(ref);
Boolean ok;
PyObject* result;
char* buf;
buf = PyMem_Malloc(len*4);
if (buf == NULL) {
PyErr_NoMemory();
return NULL;
}
ok = CFStringGetCString(ref,
buf, len * 4,
kCFStringEncodingUTF8);
if (!ok) {
PyMem_Free(buf);
return NULL;
} else {
result = PyUnicode_DecodeUTF8(
buf, strlen(buf), NULL);
PyMem_Free(buf);
}
return result;
}
}
static PyObject*
get_proxy_settings(PyObject* mod __attribute__((__unused__)))
{
CFDictionaryRef proxyDict = NULL;
CFNumberRef aNum = NULL;
CFArrayRef anArray = NULL;
PyObject* result = NULL;
PyObject* v;
int r;
proxyDict = SCDynamicStoreCopyProxies(NULL);
if (!proxyDict) {
Py_INCREF(Py_None);
return Py_None;
}
result = PyDict_New();
if (result == NULL) goto error;
if (&kSCPropNetProxiesExcludeSimpleHostnames != NULL) {
aNum = CFDictionaryGetValue(proxyDict,
kSCPropNetProxiesExcludeSimpleHostnames);
if (aNum == NULL) {
v = PyBool_FromLong(0);
} else {
v = PyBool_FromLong(cfnum_to_int32(aNum));
}
} else {
v = PyBool_FromLong(0);
}
if (v == NULL) goto error;
r = PyDict_SetItemString(result, "exclude_simple", v);
Py_DECREF(v); v = NULL;
if (r == -1) goto error;
anArray = CFDictionaryGetValue(proxyDict,
kSCPropNetProxiesExceptionsList);
if (anArray != NULL) {
CFIndex len = CFArrayGetCount(anArray);
CFIndex i;
v = PyTuple_New(len);
if (v == NULL) goto error;
r = PyDict_SetItemString(result, "exceptions", v);
Py_DECREF(v);
if (r == -1) goto error;
for (i = 0; i < len; i++) {
CFStringRef aString = NULL;
aString = CFArrayGetValueAtIndex(anArray, i);
if (aString == NULL) {
PyTuple_SetItem(v, i, Py_None);
Py_INCREF(Py_None);
} else {
PyObject* t = cfstring_to_pystring(aString);
if (!t) {
PyTuple_SetItem(v, i, Py_None);
Py_INCREF(Py_None);
} else {
PyTuple_SetItem(v, i, t);
}
}
}
}
CFRelease(proxyDict);
return result;
error:
if (proxyDict) CFRelease(proxyDict);
Py_XDECREF(result);
return NULL;
}
static int
set_proxy(PyObject* proxies, char* proto, CFDictionaryRef proxyDict,
CFStringRef enabledKey,
CFStringRef hostKey, CFStringRef portKey)
{
CFNumberRef aNum;
aNum = CFDictionaryGetValue(proxyDict, enabledKey);
if (aNum && cfnum_to_int32(aNum)) {
CFStringRef hostString;
hostString = CFDictionaryGetValue(proxyDict, hostKey);
aNum = CFDictionaryGetValue(proxyDict, portKey);
if (hostString) {
int r;
PyObject* h = cfstring_to_pystring(hostString);
PyObject* v;
if (h) {
if (aNum) {
int32_t port = cfnum_to_int32(aNum);
v = PyUnicode_FromFormat("http://%U:%ld",
h, (long)port);
} else {
v = PyUnicode_FromFormat("http://%U", h);
}
Py_DECREF(h);
if (!v) return -1;
r = PyDict_SetItemString(proxies, proto,
v);
Py_DECREF(v);
return r;
}
}
}
return 0;
}
static PyObject*
get_proxies(PyObject* mod __attribute__((__unused__)))
{
PyObject* result = NULL;
int r;
CFDictionaryRef proxyDict = NULL;
proxyDict = SCDynamicStoreCopyProxies(NULL);
if (proxyDict == NULL) {
return PyDict_New();
}
result = PyDict_New();
if (result == NULL) goto error;
r = set_proxy(result, "http", proxyDict,
kSCPropNetProxiesHTTPEnable,
kSCPropNetProxiesHTTPProxy,
kSCPropNetProxiesHTTPPort);
if (r == -1) goto error;
r = set_proxy(result, "https", proxyDict,
kSCPropNetProxiesHTTPSEnable,
kSCPropNetProxiesHTTPSProxy,
kSCPropNetProxiesHTTPSPort);
if (r == -1) goto error;
r = set_proxy(result, "ftp", proxyDict,
kSCPropNetProxiesFTPEnable,
kSCPropNetProxiesFTPProxy,
kSCPropNetProxiesFTPPort);
if (r == -1) goto error;
r = set_proxy(result, "gopher", proxyDict,
kSCPropNetProxiesGopherEnable,
kSCPropNetProxiesGopherProxy,
kSCPropNetProxiesGopherPort);
if (r == -1) goto error;
CFRelease(proxyDict);
return result;
error:
if (proxyDict) CFRelease(proxyDict);
Py_XDECREF(result);
return NULL;
}
static PyMethodDef mod_methods[] = {
{
"_get_proxy_settings",
(PyCFunction)get_proxy_settings,
METH_NOARGS,
NULL,
},
{
"_get_proxies",
(PyCFunction)get_proxies,
METH_NOARGS,
NULL,
},
{ 0, 0, 0, 0 }
};
static struct PyModuleDef mod_module = {
PyModuleDef_HEAD_INIT,
"_scproxy",
NULL,
-1,
mod_methods,
NULL,
NULL,
NULL,
NULL
};
#ifdef __cplusplus
extern "C" {
#endif
PyMODINIT_FUNC
PyInit__scproxy(void)
{
return PyModule_Create(&mod_module);
}
#ifdef __cplusplus
}
#endif
|
