Mercurial > cpython-lru_cache-weakref

annotate Modules/pwdmodule.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 3893ab574c55 b322655a4a88 dea15868963f
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1
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2 /* UNIX password file access module */
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4 #include "Python.h"
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5
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6 #include <sys/types.h>
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7 #include <pwd.h>
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8
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9 static PyStructSequence_Field struct_pwd_type_fields[] = {
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10 {"pw_name", "user name"},
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11 {"pw_passwd", "password"},
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12 {"pw_uid", "user id"},
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13 {"pw_gid", "group id"},
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14 {"pw_gecos", "real name"},
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15 {"pw_dir", "home directory"},
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16 {"pw_shell", "shell program"},
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17 {0}
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18 };
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19
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20 PyDoc_STRVAR(struct_passwd__doc__,
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21 "pwd.struct_passwd: Results from getpw*() routines.\n\n\
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22 This object may be accessed either as a tuple of\n\
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23 (pw_name,pw_passwd,pw_uid,pw_gid,pw_gecos,pw_dir,pw_shell)\n\
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24 or via the object attributes as named in the above tuple.");
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25
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26 static PyStructSequence_Desc struct_pwd_type_desc = {
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27 "pwd.struct_passwd",
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28 struct_passwd__doc__,
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29 struct_pwd_type_fields,
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30 7,
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31 };
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32
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33 PyDoc_STRVAR(pwd__doc__,
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34 "This module provides access to the Unix password database.\n\
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35 It is available on all Unix versions.\n\
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36 \n\
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37 Password database entries are reported as 7-tuples containing the following\n\
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38 items from the password database (see `<pwd.h>'), in order:\n\
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39 pw_name, pw_passwd, pw_uid, pw_gid, pw_gecos, pw_dir, pw_shell.\n\
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40 The uid and gid items are integers, all others are strings. An\n\
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41 exception is raised if the entry asked for cannot be found.");
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42
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43
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44 static int initialized;
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45 static PyTypeObject StructPwdType;
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46
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47 static void
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48 sets(PyObject *v, int i, const char* val)
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49 {
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50 if (val) {
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51 PyObject *o = PyUnicode_DecodeFSDefault(val);
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52 PyStructSequence_SET_ITEM(v, i, o);
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53 }
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54 else {
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55 PyStructSequence_SET_ITEM(v, i, Py_None);
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56 Py_INCREF(Py_None);
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57 }
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58 }
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59
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60 static PyObject *
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61 mkpwent(struct passwd *p)
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62 {
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63 int setIndex = 0;
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64 PyObject *v = PyStructSequence_New(&StructPwdType);
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65 if (v == NULL)
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66 return NULL;
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67
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68 #define SETI(i,val) PyStructSequence_SET_ITEM(v, i, PyLong_FromLong((long) val))
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69 #define SETS(i,val) sets(v, i, val)
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71 SETS(setIndex++, p->pw_name);
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72 #ifdef __VMS
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73 SETS(setIndex++, "");
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74 #else
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75 SETS(setIndex++, p->pw_passwd);
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76 #endif
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77 SETI(setIndex++, p->pw_uid);
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78 SETI(setIndex++, p->pw_gid);
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79 #ifdef __VMS
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80 SETS(setIndex++, "");
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81 #else
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82 SETS(setIndex++, p->pw_gecos);
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83 #endif
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84 SETS(setIndex++, p->pw_dir);
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85 SETS(setIndex++, p->pw_shell);
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86
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87 #undef SETS
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88 #undef SETI
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89
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90 if (PyErr_Occurred()) {
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91 Py_XDECREF(v);
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92 return NULL;
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93 }
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94
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95 return v;
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96 }
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97
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98 PyDoc_STRVAR(pwd_getpwuid__doc__,
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99 "getpwuid(uid) -> (pw_name,pw_passwd,pw_uid,\n\
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100 pw_gid,pw_gecos,pw_dir,pw_shell)\n\
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101 Return the password database entry for the given numeric user ID.\n\
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102 See help(pwd) for more on password database entries.");
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103
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104 static PyObject *
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105 pwd_getpwuid(PyObject *self, PyObject *args)
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106 {
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107 unsigned int uid;
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108 struct passwd *p;
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109 if (!PyArg_ParseTuple(args, "I:getpwuid", &uid))
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110 return NULL;
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111 if ((p = getpwuid(uid)) == NULL) {
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112 PyErr_Format(PyExc_KeyError,
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113 "getpwuid(): uid not found: %d", uid);
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114 return NULL;
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115 }
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116 return mkpwent(p);
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117 }
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118
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119 PyDoc_STRVAR(pwd_getpwnam__doc__,
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120 "getpwnam(name) -> (pw_name,pw_passwd,pw_uid,\n\
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121 pw_gid,pw_gecos,pw_dir,pw_shell)\n\
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122 Return the password database entry for the given user name.\n\
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123 See help(pwd) for more on password database entries.");
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124
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125 static PyObject *
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126 pwd_getpwnam(PyObject *self, PyObject *args)
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127 {
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128 char *name;
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129 struct passwd *p;
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130 PyObject *arg, *bytes, *retval = NULL;
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131
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132 if (!PyArg_ParseTuple(args, "U:getpwnam", &arg))
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133 return NULL;
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134 if ((bytes = PyUnicode_EncodeFSDefault(arg)) == NULL)
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135 return NULL;
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136 if (PyBytes_AsStringAndSize(bytes, &name, NULL) == -1)
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137 goto out;
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138 if ((p = getpwnam(name)) == NULL) {
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139 PyErr_Format(PyExc_KeyError,
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140 "getpwnam(): name not found: %s", name);
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141 goto out;
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142 }
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143 retval = mkpwent(p);
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144 out:
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145 Py_DECREF(bytes);
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146 return retval;
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147 }
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148
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149 #ifdef HAVE_GETPWENT
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150 PyDoc_STRVAR(pwd_getpwall__doc__,
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151 "getpwall() -> list_of_entries\n\
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152 Return a list of all available password database entries, \
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153 in arbitrary order.\n\
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154 See help(pwd) for more on password database entries.");
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155
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156 static PyObject *
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157 pwd_getpwall(PyObject *self)
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158 {
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159 PyObject *d;
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160 struct passwd *p;
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161 if ((d = PyList_New(0)) == NULL)
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162 return NULL;
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163 #if defined(PYOS_OS2) && defined(PYCC_GCC)
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164 if ((p = getpwuid(0)) != NULL) {
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165 #else
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166 setpwent();
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167 while ((p = getpwent()) != NULL) {
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168 #endif
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169 PyObject *v = mkpwent(p);
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170 if (v == NULL || PyList_Append(d, v) != 0) {
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171 Py_XDECREF(v);
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172 Py_DECREF(d);
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173 endpwent();
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174 return NULL;
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175 }
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176 Py_DECREF(v);
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177 }
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178 endpwent();
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179 return d;
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180 }
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181 #endif
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182
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183 static PyMethodDef pwd_methods[] = {
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184 {"getpwuid", pwd_getpwuid, METH_VARARGS, pwd_getpwuid__doc__},
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185 {"getpwnam", pwd_getpwnam, METH_VARARGS, pwd_getpwnam__doc__},
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186 #ifdef HAVE_GETPWENT
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187 {"getpwall", (PyCFunction)pwd_getpwall,
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188 METH_NOARGS, pwd_getpwall__doc__},
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189 #endif
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190 {NULL, NULL} /* sentinel */
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191 };
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192
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193 static struct PyModuleDef pwdmodule = {
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194 PyModuleDef_HEAD_INIT,
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195 "pwd",
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196 pwd__doc__,
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197 -1,
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198 pwd_methods,
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199 NULL,
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200 NULL,
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201 NULL,
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202 NULL
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203 };
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204
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205
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206 PyMODINIT_FUNC
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207 PyInit_pwd(void)
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208 {
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209 PyObject *m;
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210 m = PyModule_Create(&pwdmodule);
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211 if (m == NULL)
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212 return NULL;
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213
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214 if (!initialized) {
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215 PyStructSequence_InitType(&StructPwdType,
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216 &struct_pwd_type_desc);
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217 initialized = 1;
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218 }
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219 Py_INCREF((PyObject *) &StructPwdType);
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220 PyModule_AddObject(m, "struct_passwd", (PyObject *) &StructPwdType);
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221 return m;
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222 }