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annotate Modules/spwdmodule.c @ 70817:dd775b1561ba

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Fix markup.
author Georg Brandl <georg@python.org>
date Tue, 14 Jun 2011 21:09:55 +0200
parents 3c9232a684ae
children fc718c177ee6
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1
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2 /* UNIX shadow password file access module */
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3 /* A lot of code has been taken from pwdmodule.c */
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4 /* For info also see http://www.unixpapa.com/incnote/passwd.html */
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5
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6 #include "Python.h"
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7
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8 #include <sys/types.h>
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9 #ifdef HAVE_SHADOW_H
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10 #include <shadow.h>
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11 #endif
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12
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13
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14 PyDoc_STRVAR(spwd__doc__,
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15 "This module provides access to the Unix shadow password database.\n\
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16 It is available on various Unix versions.\n\
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17 \n\
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18 Shadow password database entries are reported as 9-tuples of type struct_spwd,\n\
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19 containing the following items from the password database (see `<shadow.h>'):\n\
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20 sp_namp, sp_pwdp, sp_lstchg, sp_min, sp_max, sp_warn, sp_inact, sp_expire, sp_flag.\n\
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21 The sp_namp and sp_pwdp are strings, the rest are integers.\n\
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22 An exception is raised if the entry asked for cannot be found.\n\
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23 You have to be root to be able to use this module.");
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24
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25
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26 #if defined(HAVE_GETSPNAM) || defined(HAVE_GETSPENT)
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27
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28 static PyStructSequence_Field struct_spwd_type_fields[] = {
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29 {"sp_nam", "login name"},
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30 {"sp_pwd", "encrypted password"},
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31 {"sp_lstchg", "date of last change"},
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32 {"sp_min", "min #days between changes"},
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33 {"sp_max", "max #days between changes"},
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34 {"sp_warn", "#days before pw expires to warn user about it"},
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35 {"sp_inact", "#days after pw expires until account is blocked"},
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36 {"sp_expire", "#days since 1970-01-01 until account is disabled"},
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37 {"sp_flag", "reserved"},
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38 {0}
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39 };
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40
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41 PyDoc_STRVAR(struct_spwd__doc__,
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42 "spwd.struct_spwd: Results from getsp*() routines.\n\n\
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43 This object may be accessed either as a 9-tuple of\n\
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44 (sp_nam,sp_pwd,sp_lstchg,sp_min,sp_max,sp_warn,sp_inact,sp_expire,sp_flag)\n\
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45 or via the object attributes as named in the above tuple.");
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46
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47 static PyStructSequence_Desc struct_spwd_type_desc = {
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48 "spwd.struct_spwd",
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49 struct_spwd__doc__,
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50 struct_spwd_type_fields,
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51 9,
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52 };
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53
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54 static int initialized;
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55 static PyTypeObject StructSpwdType;
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56
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57
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58 static void
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59 sets(PyObject *v, int i, const char* val)
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60 {
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61 if (val) {
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62 PyObject *o = PyUnicode_DecodeFSDefault(val);
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63 PyStructSequence_SET_ITEM(v, i, o);
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64 } else {
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65 PyStructSequence_SET_ITEM(v, i, Py_None);
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66 Py_INCREF(Py_None);
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67 }
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68 }
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69
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70 static PyObject *mkspent(struct spwd *p)
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71 {
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72 int setIndex = 0;
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73 PyObject *v = PyStructSequence_New(&StructSpwdType);
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74 if (v == NULL)
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75 return NULL;
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76
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77 #define SETI(i,val) PyStructSequence_SET_ITEM(v, i, PyLong_FromLong((long) val))
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78 #define SETS(i,val) sets(v, i, val)
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79
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80 SETS(setIndex++, p->sp_namp);
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81 SETS(setIndex++, p->sp_pwdp);
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82 SETI(setIndex++, p->sp_lstchg);
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83 SETI(setIndex++, p->sp_min);
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84 SETI(setIndex++, p->sp_max);
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85 SETI(setIndex++, p->sp_warn);
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86 SETI(setIndex++, p->sp_inact);
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87 SETI(setIndex++, p->sp_expire);
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88 SETI(setIndex++, p->sp_flag);
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89
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90 #undef SETS
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91 #undef SETI
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92
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93 if (PyErr_Occurred()) {
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94 Py_DECREF(v);
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95 return NULL;
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96 }
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97
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98 return v;
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99 }
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100
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101 #endif /* HAVE_GETSPNAM || HAVE_GETSPENT */
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102
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103
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104 #ifdef HAVE_GETSPNAM
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105
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106 PyDoc_STRVAR(spwd_getspnam__doc__,
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107 "getspnam(name) -> (sp_namp, sp_pwdp, sp_lstchg, sp_min, sp_max,\n\
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108 sp_warn, sp_inact, sp_expire, sp_flag)\n\
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109 Return the shadow password database entry for the given user name.\n\
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110 See spwd.__doc__ for more on shadow password database entries.");
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111
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112 static PyObject* spwd_getspnam(PyObject *self, PyObject *args)
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113 {
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114 char *name;
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115 struct spwd *p;
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116 PyObject *arg, *bytes, *retval = NULL;
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117
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118 if (!PyArg_ParseTuple(args, "U:getspnam", &arg))
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119 return NULL;
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120 if ((bytes = PyUnicode_EncodeFSDefault(arg)) == NULL)
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121 return NULL;
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122 if (PyBytes_AsStringAndSize(bytes, &name, NULL) == -1)
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123 goto out;
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124 if ((p = getspnam(name)) == NULL) {
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125 PyErr_SetString(PyExc_KeyError, "getspnam(): name not found");
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126 goto out;
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127 }
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128 retval = mkspent(p);
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129 out:
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130 Py_DECREF(bytes);
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131 return retval;
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132 }
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133
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134 #endif /* HAVE_GETSPNAM */
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135
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136 #ifdef HAVE_GETSPENT
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137
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138 PyDoc_STRVAR(spwd_getspall__doc__,
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139 "getspall() -> list_of_entries\n\
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140 Return a list of all available shadow password database entries, \
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141 in arbitrary order.\n\
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142 See spwd.__doc__ for more on shadow password database entries.");
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143
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144 static PyObject *
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145 spwd_getspall(PyObject *self, PyObject *args)
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146 {
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147 PyObject *d;
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148 struct spwd *p;
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149 if ((d = PyList_New(0)) == NULL)
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150 return NULL;
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151 setspent();
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152 while ((p = getspent()) != NULL) {
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153 PyObject *v = mkspent(p);
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154 if (v == NULL || PyList_Append(d, v) != 0) {
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155 Py_XDECREF(v);
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156 Py_DECREF(d);
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157 endspent();
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158 return NULL;
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159 }
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160 Py_DECREF(v);
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161 }
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162 endspent();
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163 return d;
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164 }
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165
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166 #endif /* HAVE_GETSPENT */
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167
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168 static PyMethodDef spwd_methods[] = {
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169 #ifdef HAVE_GETSPNAM
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170 {"getspnam", spwd_getspnam, METH_VARARGS, spwd_getspnam__doc__},
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171 #endif
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172 #ifdef HAVE_GETSPENT
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173 {"getspall", spwd_getspall, METH_NOARGS, spwd_getspall__doc__},
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174 #endif
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175 {NULL, NULL} /* sentinel */
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176 };
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177
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178
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179
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180 static struct PyModuleDef spwdmodule = {
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181 PyModuleDef_HEAD_INIT,
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182 "spwd",
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183 spwd__doc__,
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184 -1,
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185 spwd_methods,
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186 NULL,
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187 NULL,
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188 NULL,
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189 NULL
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190 };
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191
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192 PyMODINIT_FUNC
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193 PyInit_spwd(void)
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194 {
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195 PyObject *m;
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196 m=PyModule_Create(&spwdmodule);
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197 if (m == NULL)
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198 return NULL;
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199 if (!initialized)
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200 PyStructSequence_InitType(&StructSpwdType,
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201 &struct_spwd_type_desc);
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202 Py_INCREF((PyObject *) &StructSpwdType);
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203 PyModule_AddObject(m, "struct_spwd", (PyObject *) &StructSpwdType);
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204 initialized = 1;
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205 return m;
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206 }