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
|
/* UNIX group file access module */
#include "Python.h"
#include "structseq.h"
#include <sys/types.h>
#include <grp.h>
static PyStructSequence_Field struct_group_type_fields[] = {
{"gr_name", "group name"},
{"gr_passwd", "password"},
{"gr_gid", "group id"},
{"gr_mem", "group memebers"},
{0}
};
PyDoc_STRVAR(struct_group__doc__,
"grp.struct_group: Results from getgr*() routines.\n\n\
This object may be accessed either as a tuple of\n\
(gr_name,gr_passwd,gr_gid,gr_mem)\n\
or via the object attributes as named in the above tuple.\n");
static PyStructSequence_Desc struct_group_type_desc = {
"grp.struct_group",
struct_group__doc__,
struct_group_type_fields,
4,
};
static int initialized;
static PyTypeObject StructGrpType;
static PyObject *
mkgrent(struct group *p)
{
int setIndex = 0;
PyObject *v = PyStructSequence_New(&StructGrpType), *w;
char **member;
if (v == NULL)
return NULL;
if ((w = PyList_New(0)) == NULL) {
Py_DECREF(v);
return NULL;
}
for (member = p->gr_mem; *member != NULL; member++) {
PyObject *x = PyUnicode_DecodeFSDefault(*member);
if (x == NULL || PyList_Append(w, x) != 0) {
Py_XDECREF(x);
Py_DECREF(w);
Py_DECREF(v);
return NULL;
}
Py_DECREF(x);
}
#define SET(i,val) PyStructSequence_SET_ITEM(v, i, val)
SET(setIndex++, PyUnicode_DecodeFSDefault(p->gr_name));
#ifdef __VMS
SET(setIndex++, Py_None);
Py_INCREF(Py_None);
#else
if (p->gr_passwd)
SET(setIndex++, PyUnicode_DecodeFSDefault(p->gr_passwd));
else {
SET(setIndex++, Py_None);
Py_INCREF(Py_None);
}
#endif
SET(setIndex++, PyLong_FromLong((long) p->gr_gid));
SET(setIndex++, w);
#undef SET
if (PyErr_Occurred()) {
Py_DECREF(v);
return NULL;
}
return v;
}
static PyObject *
grp_getgrgid(PyObject *self, PyObject *pyo_id)
{
PyObject *py_int_id;
unsigned int gid;
struct group *p;
py_int_id = PyNumber_Long(pyo_id);
if (!py_int_id)
return NULL;
gid = PyLong_AS_LONG(py_int_id);
Py_DECREF(py_int_id);
if ((p = getgrgid(gid)) == NULL) {
PyErr_Format(PyExc_KeyError, "getgrgid(): gid not found: %d", gid);
return NULL;
}
return mkgrent(p);
}
static PyObject *
grp_getgrnam(PyObject *self, PyObject *args)
{
char *name;
struct group *p;
PyObject *arg, *bytes, *retval = NULL;
if (!PyArg_ParseTuple(args, "U:getgrnam", &arg))
return NULL;
if ((bytes = PyUnicode_AsEncodedString(arg, Py_FileSystemDefaultEncoding,
"surrogateescape")) == NULL)
return NULL;
if (PyBytes_AsStringAndSize(bytes, &name, NULL) == -1)
goto out;
if ((p = getgrnam(name)) == NULL) {
PyErr_Format(PyExc_KeyError, "getgrnam(): name not found: %s", name);
goto out;
}
retval = mkgrent(p);
out:
Py_DECREF(bytes);
return retval;
}
static PyObject *
grp_getgrall(PyObject *self, PyObject *ignore)
{
PyObject *d;
struct group *p;
if ((d = PyList_New(0)) == NULL)
return NULL;
setgrent();
while ((p = getgrent()) != NULL) {
PyObject *v = mkgrent(p);
if (v == NULL || PyList_Append(d, v) != 0) {
Py_XDECREF(v);
Py_DECREF(d);
endgrent();
return NULL;
}
Py_DECREF(v);
}
endgrent();
return d;
}
static PyMethodDef grp_methods[] = {
{"getgrgid", grp_getgrgid, METH_O,
"getgrgid(id) -> tuple\n\
Return the group database entry for the given numeric group ID. If\n\
id is not valid, raise KeyError."},
{"getgrnam", grp_getgrnam, METH_VARARGS,
"getgrnam(name) -> tuple\n\
Return the group database entry for the given group name. If\n\
name is not valid, raise KeyError."},
{"getgrall", grp_getgrall, METH_NOARGS,
"getgrall() -> list of tuples\n\
Return a list of all available group entries, in arbitrary order."},
{NULL, NULL} /* sentinel */
};
PyDoc_STRVAR(grp__doc__,
"Access to the Unix group database.\n\
\n\
Group entries are reported as 4-tuples containing the following fields\n\
from the group database, in order:\n\
\n\
name - name of the group\n\
passwd - group password (encrypted); often empty\n\
gid - numeric ID of the group\n\
mem - list of members\n\
\n\
The gid is an integer, name and password are strings. (Note that most\n\
users are not explicitly listed as members of the groups they are in\n\
according to the password database. Check both databases to get\n\
complete membership information.)");
static struct PyModuleDef grpmodule = {
PyModuleDef_HEAD_INIT,
"grp",
grp__doc__,
-1,
grp_methods,
NULL,
NULL,
NULL,
NULL
};
PyMODINIT_FUNC
PyInit_grp(void)
{
PyObject *m, *d;
m = PyModule_Create(&grpmodule);
if (m == NULL)
return NULL;
d = PyModule_GetDict(m);
if (!initialized)
PyStructSequence_InitType(&StructGrpType, &struct_group_type_desc);
PyDict_SetItemString(d, "struct_group", (PyObject *) &StructGrpType);
initialized = 1;
return m;
}
|
