Repository navigation
Expand file tree
/
Copy pathspwdmodule.c
More file actions
211 lines (176 loc) · 5.63 KB
/
Copy pathspwdmodule.c
File metadata and controls
211 lines (176 loc) · 5.63 KB
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 shadow password file access module */
/* A lot of code has been taken from pwdmodule.c */
/* For info also see http://www.unixpapa.com/incnote/passwd.html */
#include "Python.h"
#include "structseq.h"
#include <sys/types.h>
#ifdef HAVE_SHADOW_H
#include <shadow.h>
#endif
PyDoc_STRVAR(spwd__doc__,
"This module provides access to the Unix shadow password database.\n\
It is available on various Unix versions.\n\
\n\
Shadow password database entries are reported as 9-tuples of type struct_spwd,\n\
containing the following items from the password database (see `<shadow.h>'):\n\
sp_namp, sp_pwdp, sp_lstchg, sp_min, sp_max, sp_warn, sp_inact, sp_expire, sp_flag.\n\
The sp_namp and sp_pwdp are strings, the rest are integers.\n\
An exception is raised if the entry asked for cannot be found.\n\
You have to be root to be able to use this module.");
#if defined(HAVE_GETSPNAM) || defined(HAVE_GETSPENT)
static PyStructSequence_Field struct_spwd_type_fields[] = {
{"sp_nam", "login name"},
{"sp_pwd", "encrypted password"},
{"sp_lstchg", "date of last change"},
{"sp_min", "min #days between changes"},
{"sp_max", "max #days between changes"},
{"sp_warn", "#days before pw expires to warn user about it"},
{"sp_inact", "#days after pw expires until account is blocked"},
{"sp_expire", "#days since 1970-01-01 until account is disabled"},
{"sp_flag", "reserved"},
{0}
};
PyDoc_STRVAR(struct_spwd__doc__,
"spwd.struct_spwd: Results from getsp*() routines.\n\n\
This object may be accessed either as a 9-tuple of\n\
(sp_nam,sp_pwd,sp_lstchg,sp_min,sp_max,sp_warn,sp_inact,sp_expire,sp_flag)\n\
or via the object attributes as named in the above tuple.");
static PyStructSequence_Desc struct_spwd_type_desc = {
"spwd.struct_spwd",
struct_spwd__doc__,
struct_spwd_type_fields,
9,
};
static int initialized;
static PyTypeObject StructSpwdType;
static void
sets(PyObject *v, int i, const char* val)
{
if (val) {
PyObject *o = PyUnicode_Decode(val, strlen(val),
Py_FileSystemDefaultEncoding,
"surrogateescape");
PyStructSequence_SET_ITEM(v, i, o);
} else {
PyStructSequence_SET_ITEM(v, i, Py_None);
Py_INCREF(Py_None);
}
}
static PyObject *mkspent(struct spwd *p)
{
int setIndex = 0;
PyObject *v = PyStructSequence_New(&StructSpwdType);
if (v == NULL)
return NULL;
#define SETI(i,val) PyStructSequence_SET_ITEM(v, i, PyLong_FromLong((long) val))
#define SETS(i,val) sets(v, i, val)
SETS(setIndex++, p->sp_namp);
SETS(setIndex++, p->sp_pwdp);
SETI(setIndex++, p->sp_lstchg);
SETI(setIndex++, p->sp_min);
SETI(setIndex++, p->sp_max);
SETI(setIndex++, p->sp_warn);
SETI(setIndex++, p->sp_inact);
SETI(setIndex++, p->sp_expire);
SETI(setIndex++, p->sp_flag);
#undef SETS
#undef SETI
if (PyErr_Occurred()) {
Py_DECREF(v);
return NULL;
}
return v;
}
#endif /* HAVE_GETSPNAM || HAVE_GETSPENT */
#ifdef HAVE_GETSPNAM
PyDoc_STRVAR(spwd_getspnam__doc__,
"getspnam(name) -> (sp_namp, sp_pwdp, sp_lstchg, sp_min, sp_max,\n\
sp_warn, sp_inact, sp_expire, sp_flag)\n\
Return the shadow password database entry for the given user name.\n\
See spwd.__doc__ for more on shadow password database entries.");
static PyObject* spwd_getspnam(PyObject *self, PyObject *args)
{
char *name;
struct spwd *p;
PyObject *arg, *bytes, *retval = NULL;
if (!PyArg_ParseTuple(args, "U:getspnam", &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 = getspnam(name)) == NULL) {
PyErr_SetString(PyExc_KeyError, "getspnam(): name not found");
goto out;
}
retval = mkspent(p);
out:
Py_DECREF(bytes);
return retval;
}
#endif /* HAVE_GETSPNAM */
#ifdef HAVE_GETSPENT
PyDoc_STRVAR(spwd_getspall__doc__,
"getspall() -> list_of_entries\n\
Return a list of all available shadow password database entries, \
in arbitrary order.\n\
See spwd.__doc__ for more on shadow password database entries.");
static PyObject *
spwd_getspall(PyObject *self, PyObject *args)
{
PyObject *d;
struct spwd *p;
if ((d = PyList_New(0)) == NULL)
return NULL;
setspent();
while ((p = getspent()) != NULL) {
PyObject *v = mkspent(p);
if (v == NULL || PyList_Append(d, v) != 0) {
Py_XDECREF(v);
Py_DECREF(d);
endspent();
return NULL;
}
Py_DECREF(v);
}
endspent();
return d;
}
#endif /* HAVE_GETSPENT */
static PyMethodDef spwd_methods[] = {
#ifdef HAVE_GETSPNAM
{"getspnam", spwd_getspnam, METH_VARARGS, spwd_getspnam__doc__},
#endif
#ifdef HAVE_GETSPENT
{"getspall", spwd_getspall, METH_NOARGS, spwd_getspall__doc__},
#endif
{NULL, NULL} /* sentinel */
};
static struct PyModuleDef spwdmodule = {
PyModuleDef_HEAD_INIT,
"spwd",
spwd__doc__,
-1,
spwd_methods,
NULL,
NULL,
NULL,
NULL
};
PyMODINIT_FUNC
PyInit_spwd(void)
{
PyObject *m;
m=PyModule_Create(&spwdmodule);
if (m == NULL)
return NULL;
if (!initialized)
PyStructSequence_InitType(&StructSpwdType,
&struct_spwd_type_desc);
Py_INCREF((PyObject *) &StructSpwdType);
PyModule_AddObject(m, "struct_spwd", (PyObject *) &StructSpwdType);
initialized = 1;
return m;
}