annotate Lib/IMPL/Security/Context.pm @ 121:92c850d0bdb9

Minor changes Fixed bug with templates base in the PageFormat module Added an ability to remove current security context with a specified
author wizard
date Tue, 08 Jun 2010 03:38:10 +0400
parents 964587c5183c
children a9f4ba4783eb
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1 package IMPL::Security::Context;
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2 use strict;
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3 use warnings;
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4
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5 use base qw(IMPL::Object IMPL::Object::Autofill);
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6
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7 __PACKAGE__->PassThroughArgs;
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8
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9 use IMPL::Class::Property;
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10
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11 require IMPL::Security::Principal;
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12
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13 my $current;
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14 my $nobody;
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15
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16 BEGIN {
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17 public property principal => prop_get;
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18 public property rolesAssigned => prop_all | prop_list;
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19 public property auth => prop_all;
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20 public property authority => prop_all;
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21 }
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22
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23 sub CTOR {
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24 my ($this) = @_;
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25
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26 die new IMPL::InvalidArgumentException("The parameter is required", 'principal') unless $this->principal;
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27 }
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28
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29 sub Impersonate {
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30 my ($this,$code) = @_;
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31
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32 my $old = $current;
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33 $current = $this;
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34 my $result;
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35 my $e;
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36
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37 {
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38 local $@;
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39 eval {
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40 $result = $code->();
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41 };
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42 $e = $@;
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43 }
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44 $current = $old;
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45 if($e) {
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46 die $e;
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47 } else {
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48 return $result;
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49 }
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50 }
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51
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52 sub Apply {
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53 my ($this) = @_;
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54
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55 $current = $this;
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56 }
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57
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58 sub isTrusted {
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59 my ($this) = @_;
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60
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61 if (my $auth = $this->auth) {
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62 return $auth->isTrusted;
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63 } else {
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64 return 0;
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65 }
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66 }
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67
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68 sub nobody {
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69 my ($self) = @_;
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70 $nobody = $self->new(principal => IMPL::Security::Principal->nobody, rolesAssigned => undef) unless $nobody;
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71 $nobody;
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72 }
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73
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74 sub current {
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75 my ($self) = @_;
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76
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77 $current = __PACKAGE__->nobody unless $current;
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78 $current;
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79 }
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81 sub Satisfy {
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82 my ($this,@roles) = @_;
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83
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84 my $roleEffective = new IMPL::Security::Role ( _effective => $this->rolesAssigned );
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85
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86 return $roleEffective->Satisfy(@roles);
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87 }
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88
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89 1;
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90
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91 __END__
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92
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93 =pod
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94
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95 =head1 NAME
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96
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97 C<IMPL::Security::Context> - контекст безопасности.
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98
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99 =head1 SINOPSYS
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100
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101 =begin code
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102
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103 my $context = IMPL::Security::Context->nobody;
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104
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105 my $result = $context->Impersonate(
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106 sub {
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107 # do some untrusted code
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108 }
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109 );
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110
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111 =end code
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112
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113 =head1 DESCRIPTION
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114
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115 C<[Autofill]>
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116
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117 Являет собой контекст безопасности, описывает пользователя и привелегии, так же
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118 у программы есть текущий контекст безопасности, по умолчанию он C<nobody>.
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119
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120 =head1 MEMBERS
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121
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122 =over
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123
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124 =item C<CTOR(%props)>
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125
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126 Создает объект и заполняет его свойствами.
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127
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128 =item C<[get] principal>
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129
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130 Идентификатор пользователя, владельца контекста.
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131
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132 =item C<[get] rolesAssigned>
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133
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134 Список назначенных (активных) ролей пользователю.
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135
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136 =item C<[get] auth>
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137
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138 Объект асторизации C<IMPL::Security::Auth>, использованный при создании текущего контекста.
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139
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140 =item C<[static,get] authority>
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141
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142 Источник данных безопасности, породивший данный контекст.
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143
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144 =item C<[get] isTrusted>
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145
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146 Возвращает значение является ли контекст доверенным, тоесть сессия аутетифицирована.
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147
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148 =item C<Impersonate($code)>
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149
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150 Делает контекст текущим и выполняет в нем функцию по ссылке C<$code>. По окончании
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151 выполнения, контекст восстанавливается.
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152
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153 =item C<Apply()>
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154
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155 Заменяет текущий контекст на себя, но до конца действия метода C<Impersonate>, если
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156 таковой был вызван.
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157
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158 =item C<[static,get] nobody>
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159
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160 Контекст для неаутентифицированных пользователей, минимум прав.
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161
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162 =item C<[static,get] current>
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163
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164 Текущий контекст.
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165
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166 =back
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167
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168 =cut