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1 package IMPL::Web::Handler::SecureCookie;
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196
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2 use strict;
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3
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4
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5 use Digest::MD5 qw(md5_hex);
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6 use IMPL::Const qw(:prop);
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7 use IMPL::Security::Auth qw(:Const GenSSID);
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8 use IMPL::declare {
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9 require => {
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10 SecurityContext => 'IMPL::Security::Context',
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11 User => 'IMPL::Security::Principal',
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12 AuthSimple => 'IMPL::Security::Auth::Simple',
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13 Exception => 'IMPL::Exception',
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14 OperationException => '-IMPL::InvalidOperationException',
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15 HttpResponse => '-IMPL::Web::HttpResponse'
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16 },
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17 base => {
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18 'IMPL::Object' => undef,
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19 'IMPL::Object::Autofill' => '@_',
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20 'IMPL::Object::Serializable' => undef
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21 },
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22 props => [
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23 salt => PROP_RO,
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24 _manager => PROP_RO,
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25 _cookies => PROP_RW
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26 ]
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27 };
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28
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29 sub CTOR {
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30 my ($this) = @_;
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31
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32 $this->salt('DeadBeef') unless $this->salt;
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33 }
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34
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35 sub Invoke {
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36 my ($this,$action,$nextHandler) = @_;
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37
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38 return unless $nextHandler;
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39
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40 my $context;
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41 $this->_manager($action->application->security);
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42
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43
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44 my $sid = $action->cookie('sid',qr/(\w+)/);
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45 my $cookie = $action->cookie('sdata',qr/(\w+)/);
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46 my $sign = $action->cookie('sign',qw/(\w+)/);
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47
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48 if (
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49 $sid and
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50 $cookie and
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51 $sign and
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52 $sign eq md5_hex(
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53 $this->salt,
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54 $sid,
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55 $cookie,
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56 $this->salt
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57 )
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58 ) {
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59 # TODO: add a DefferedProxy to deffer a request to a data source
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60 if ( $context = $this->_manager->GetSession($sid) ) {
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61
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62 if ( eval { $context->auth->isa(AuthSimple) } ) {
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63 my ($result,$challenge) = $context->auth->DoAuth($cookie);
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64
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65 $action->_manager->SaveSession($context);
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66
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67 if ($result == AUTH_FAIL) {
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68 $context = undef;
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69 }
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70 }
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71 }
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72
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73 }
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74
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75 $context ||= SecurityContext->new(principal => User->nobody, authority => $this);
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76
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77 my $httpResponse = $context->Impersonate($nextHandler,$action);
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78
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79 die OperationException->new("A HttpResponse instance is expected")
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80 unless ref $httpResponse && eval { $httpResponse->isa(HttpResponse) };
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81
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82 return $this->WriteResponse($httpResponse);
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83 }
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84
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85 sub InitSession {
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86 my ($this,$user,$auth,$roles) = @_;
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87
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88 my $sid = GenSSID();
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89 my $cookie = GenSSID();
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90
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91 $this->_cookies({
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92 sid => $sid,
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93 sdata => $cookie
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94 });
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95
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96 my $context = $this->_manager->CreateSession(
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97 sessionId => $sid,
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98 principal => $user,
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99 auth => AuthSimple->Create(password => $cookie),
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100 authority => $this,
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101 assignedRoles => $roles
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102 );
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103
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104 $context->Apply();
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105
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106 return $context;
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107 }
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108
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109 sub WriteResponse {
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110 my ($this,$response) = @_;
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111
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112 if (my $data = $this->_cookies) {
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113
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114 my $sign = md5_hex(
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115 $this->salt,
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116 $data->{sid},
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117 $data->{sdata},
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118 $this->salt
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119 );
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120
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121 $response->cookies->{sid} = $data->{sid};
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122 $response->cookies->{sdata} = $data->{sdata};
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123 $response->cookies->{sign} = $sign;
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124 }
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125
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126 return $response;
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127 }
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128
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129 1;
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130
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131 __END__
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132
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133 =pod
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134
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135 =head1 NAME
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136
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137 C<IMPL::Web::Handler::SecureCookie>
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138
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139 =head1 DESCRIPTION
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140
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141 Возобновляет сессию пользователя на основе информации переданной через Cookie.
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142
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143 Использует механизм подписи информации для проверки верности входных данных перед
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144 началом каких-либо действий.
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145
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146 Данный обработчик возвращает результат выполнения следдующего обработчика.
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147
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148
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149
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150 =head1 MEMBERS
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151
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152 =head2 C<[get,set] salt>
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153
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154 Скаляр, использующийся для подписи данных.
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155
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156
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157 =head2 C<InitSession($user,$auth,$roles)>
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158
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159 =cut
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