Mercurial > cpython-lru_cache-weakref

annotate Modules/spwdmodule.c @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents fd25030223b0
children
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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 #include "structseq.h"
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8
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9 #include <sys/types.h>
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10 #ifdef HAVE_SHADOW_H
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11 #include <shadow.h>
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12 #endif
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13
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14
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15 PyDoc_STRVAR(spwd__doc__,
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16 "This module provides access to the Unix shadow password database.\n\
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17 It is available on various Unix versions.\n\
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18 \n\
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19 Shadow password database entries are reported as 9-tuples of type struct_spwd,\n\
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20 containing the following items from the password database (see `<shadow.h>'):\n\
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21 sp_namp, sp_pwdp, sp_lstchg, sp_min, sp_max, sp_warn, sp_inact, sp_expire, sp_flag.\n\
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22 The sp_namp and sp_pwdp are strings, the rest are integers.\n\
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23 An exception is raised if the entry asked for cannot be found.\n\
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24 You have to be root to be able to use this module.");
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25
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26
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27 #if defined(HAVE_GETSPNAM) || defined(HAVE_GETSPENT)
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28
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29 static PyStructSequence_Field struct_spwd_type_fields[] = {
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30 {"sp_nam", "login name"},
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31 {"sp_pwd", "encrypted password"},
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32 {"sp_lstchg", "date of last change"},
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33 {"sp_min", "min #days between changes"},
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34 {"sp_max", "max #days between changes"},
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35 {"sp_warn", "#days before pw expires to warn user about it"},
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36 {"sp_inact", "#days after pw expires until account is blocked"},
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37 {"sp_expire", "#days since 1970-01-01 until account is disabled"},
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38 {"sp_flag", "reserved"},
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39 {0}
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40 };
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41
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42 PyDoc_STRVAR(struct_spwd__doc__,
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43 "spwd.struct_spwd: Results from getsp*() routines.\n\n\
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44 This object may be accessed either as a 9-tuple of\n\
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45 (sp_nam,sp_pwd,sp_lstchg,sp_min,sp_max,sp_warn,sp_inact,sp_expire,sp_flag)\n\
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46 or via the object attributes as named in the above tuple.");
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47
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48 static PyStructSequence_Desc struct_spwd_type_desc = {
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49 "spwd.struct_spwd",
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50 struct_spwd__doc__,
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51 struct_spwd_type_fields,
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52 9,
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53 };
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54
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55 static int initialized;
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56 static PyTypeObject StructSpwdType;
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57
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58
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59 static void
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60 sets(PyObject *v, int i, char* val)
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61 {
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62 if (val)
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63 PyStructSequence_SET_ITEM(v, i, PyString_FromString(val));
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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, PyInt_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 if (!PyArg_ParseTuple(args, "s:getspnam", &name))
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117 return NULL;
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118 if ((p = getspnam(name)) == NULL) {
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119 PyErr_SetString(PyExc_KeyError, "getspnam(): name not found");
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120 return NULL;
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121 }
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122 return mkspent(p);
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123 }
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124
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125 #endif /* HAVE_GETSPNAM */
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126
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127 #ifdef HAVE_GETSPENT
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128
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129 PyDoc_STRVAR(spwd_getspall__doc__,
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130 "getspall() -> list_of_entries\n\
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131 Return a list of all available shadow password database entries, \
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132 in arbitrary order.\n\
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133 See spwd.__doc__ for more on shadow password database entries.");
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134
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135 static PyObject *
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136 spwd_getspall(PyObject *self, PyObject *args)
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137 {
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138 PyObject *d;
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139 struct spwd *p;
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140 if ((d = PyList_New(0)) == NULL)
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141 return NULL;
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142 setspent();
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143 while ((p = getspent()) != NULL) {
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144 PyObject *v = mkspent(p);
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145 if (v == NULL || PyList_Append(d, v) != 0) {
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146 Py_XDECREF(v);
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147 Py_DECREF(d);
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148 endspent();
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149 return NULL;
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150 }
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151 Py_DECREF(v);
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152 }
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153 endspent();
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154 return d;
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155 }
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156
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157 #endif /* HAVE_GETSPENT */
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158
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159 static PyMethodDef spwd_methods[] = {
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160 #ifdef HAVE_GETSPNAM
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161 {"getspnam", spwd_getspnam, METH_VARARGS, spwd_getspnam__doc__},
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162 #endif
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163 #ifdef HAVE_GETSPENT
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164 {"getspall", spwd_getspall, METH_NOARGS, spwd_getspall__doc__},
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165 #endif
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166 {NULL, NULL} /* sentinel */
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167 };
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168
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169
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170 PyMODINIT_FUNC
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171 initspwd(void)
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172 {
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173 PyObject *m;
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174 m=Py_InitModule3("spwd", spwd_methods, spwd__doc__);
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175 if (m == NULL)
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176 return;
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177 if (!initialized)
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178 PyStructSequence_InitType(&StructSpwdType,
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179 &struct_spwd_type_desc);
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180 Py_INCREF((PyObject *) &StructSpwdType);
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181 PyModule_AddObject(m, "struct_spwd", (PyObject *) &StructSpwdType);
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182 initialized = 1;
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183 }