annotate Lib/IMPL/Security.pm @ 235:a4d9126edcbb

code cleaning
author sergey
date Fri, 12 Oct 2012 02:08:51 +0400
parents 6d8092d8ce1b
children 7c517134c42f
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1 package IMPL::Security;
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2 use strict;
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3 use Carp qw(carp);
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4
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5 ##VERSION##
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6
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7 require IMPL::Exception;
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8 require IMPL::Security::AbstractContext;
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9 require IMPL::Security::Rule::RoleCheck;
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10
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11 our @rules = (
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12 \&IMPL::Security::Rule::RoleCheck::SatisfyAll
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13 );
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14
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15 our $authority = undef;
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16
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17 sub AccessCheck {
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18 my ($self, $object, $desiredAccess, $context) = @_;
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19
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20 $context ||= IMPL::Security::AbstractContext->context;
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21
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22 $_->() or return 0 foreach @{$self->Rules};
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23
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24 return 1;
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25 }
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26
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27 sub Take {
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28 my ($self,$principal,$refRoles) = @_;
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29
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30 die new IMPL::NotImplementedException();
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31 }
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32
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33 sub MakeContext {
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34 my ($this,$principal,$refRoles,$auth) = @_;
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35
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36 return new IMPL::Security::Context(
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37 principal => $principal,
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38 rolesAssigned => $refRoles,
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39 auth => $auth
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40 );
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41 }
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42
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43 sub Rules {
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44 return \@rules;
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45 }
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46
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47 sub authority {
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48 return $authority;
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49 }
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50
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51 1;
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52
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53 __END__
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54
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55 =pod
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56
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57 =head1 NAME
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58
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59 C<IMPL::Security> - Модуль для работы с функциями авторизации и аутентификации.
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60
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61 =head1 SINOPSYS
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62
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63 =begin code
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64
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65 use IMPL::Security;
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66
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67 my Method {
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68 my $this = shift;
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69
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70 # access check in the current context, using standard configuration
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71 IMPL::Security->AccessCheck($this,'Method') or die new IMPL::AccessDeniedException("Access is denied");
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72
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73 #some more results
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74 }
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75
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76 my DelegationMethod {
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78 my $this = shift;
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79
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80 #forced delegation
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81 my $delegatedContext = IMPL::Security::Context->new(
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82 principal => IMPL::Security::Principal->new(
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83 name => 'suser'
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84 ),
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85 rolesAssigned => ['administrator']
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86 )
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87
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88 my $result;
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89
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90 $delegatedContext->Impersonate(sub{
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91 $result = $this->Method();
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92 });
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93
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94 return $result;
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95 }
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96
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97 my SafeDelegationMethod {
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98
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99 my $this = shift;
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100
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101 my $delegatedContext = IMPL::Security->Take( suser => 'administrator' );
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102
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103 my $result;
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104
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105 $delegatedContext->Impersonate(sub{
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106 $result = $this->Method();
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107 });
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108
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109 return $result;
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110 }
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111
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112 =end code
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113
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114 =head1 DESCRIPTION
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115
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116 Модуль для инфраструктуры безопасности, реализует основные функции для авторизации
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117 и аутентификации пользователей.
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118
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119 Модуль аутентификации, реализиция которого зависит от приложения, аутентифицирует
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120 пользователя, при этом создается контекст безопасности, который содержит
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121 идентификатор пользователя и список активных ролей.
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122
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123 При проверке прав доступа происходит последовательная проверка правил доступа,
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124 если все правила выполнены, то доступ разрешается.
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125
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126 =head1 MEMBERS
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127
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128 =over
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129
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130 =item C<AccessCheck($object,$desiredAccess,$context)>
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131
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132 Метод. Проверка доступа к объекту с определенными правами, в определенном контексте безопасности.
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133
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134 =over
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135
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136 =item C<$object>
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137
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138 Объект доступа.
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139
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140 =item C<$desiredAccess>
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141
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142 Требуемые права доступа.
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143
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144 =item C<$context>
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145
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146 Контекст безопасности, если не указан, то используется текущий C<< IMPL::Security::Context->contextCurrent >>
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147
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148 =item C<returns>
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149
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150 C<true | false> - результат проверки
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151
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152 =back
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153
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154 =item C<MakeContext($principal,$role,$auth)>
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155
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156 Создает контекст безопасности, инициализируя его передданными параметрами.
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157
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158 =over
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159
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160 =item C<$principal>
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161
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162 Объект пользователя
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163
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164 =item C<$role>
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165
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166 Роль или ссылка на массив ролей
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167
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168 =item C<$auth>
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169
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170 Объект аутентификации
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171
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172 =back
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173
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174 =item C<Take($principal,$role)>
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175
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176 Метод. Делегирует текущему пользователю полномочия другого пользователя. При этом выполняется проверка
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177 правомерности такой операции. В случае неудачи вызывается исключение.
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178
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179 =over
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180
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181 =item C<$principal>
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182
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183 Либо имя пользователя либо объект C<IMPL::Security::Principal>.
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184
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185 =item C<$role>
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186
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187 Либо имя либо ссылка на роль, или ссылка на массив либо имен, либо ролей.
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188
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189 =item C<returns>
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190
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191 Новый контекст безопасности.
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192
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193 =back
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194
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195 =item C<Rules()>
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196
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197 Возвращает список правил которые выполняются при проверках доступа. Пререопределите этот
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198 метод, чтобы возвращать собственный список правил. Список правил является ссылкой на массив
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199 элементами которого являются функции.
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200
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201 =begin code
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202
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203 package MySecurity;
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204
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205 use parent qw(IMPL::Security);
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206
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207 sub Rules {
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208 return [
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209 \&Rule1,
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210 \&Rule2,
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211 #...
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212 ]
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213 }
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214
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215 =end code
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216
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217 =item C<[static,get] authority>
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218
180
d1676be8afcc Перекодировка в utf-8
sourcer
parents: 172
diff changeset
219 Метод, позволяющий получить текущий источник системы безопасности. Источник безопасности, это модуль,
d1676be8afcc Перекодировка в utf-8
sourcer
parents: 172
diff changeset
220 который получает входные данные и использует их для работы системы безопасности.
95
67eb8eaec3d4 Added a security authority property to the Context and Security classes
wizard
parents: 74
diff changeset
221
66
f47f93534005 Documentation
wizard
parents: 51
diff changeset
222 =back
50
wizard@linux-odin.local
parents: 49
diff changeset
223
180
d1676be8afcc Перекодировка в utf-8
sourcer
parents: 172
diff changeset
224 =cut