1 ! Copyright (c) 2008 Slava Pestov
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2 ! See http://factorcode.org/license.txt for BSD license.
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3 USING: accessors assocs namespaces kernel sequences sets
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4 destructors combinators fry
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5 io.encodings.utf8 io.encodings.string io.binary random
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6 checksums checksums.sha2
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10 http.server.dispatchers
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15 furnace.auth.providers
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16 furnace.auth.providers.db ;
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19 SYMBOL: logged-in-user
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21 : logged-in? ( -- ? ) logged-in-user get >boolean ;
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23 GENERIC: init-user-profile ( responder -- )
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25 M: object init-user-profile drop ;
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27 M: dispatcher init-user-profile
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28 default>> init-user-profile ;
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30 M: filter-responder init-user-profile
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31 responder>> init-user-profile ;
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33 : have-capability? ( capability -- ? )
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34 logged-in-user get capabilities>> member? ;
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36 : profile ( -- assoc ) logged-in-user get profile>> ;
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38 : user-changed ( -- )
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39 logged-in-user get t >>changed? drop ;
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41 : uget ( key -- value )
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44 : uset ( value key -- )
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48 : uchange ( quot key -- )
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49 profile swap change-at
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50 user-changed ; inline
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52 SYMBOL: capabilities
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54 V{ } clone capabilities set-global
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56 : define-capability ( word -- ) capabilities get adjoin ;
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58 TUPLE: realm < dispatcher name users checksum secure ;
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60 GENERIC: login-required* ( realm -- response )
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62 GENERIC: logged-in-username ( realm -- username )
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64 : login-required ( -- * ) realm get login-required* exit-with ;
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66 : new-realm ( responder name class -- realm )
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74 : users ( -- provider )
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77 TUPLE: user-saver user ;
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79 C: <user-saver> user-saver
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81 M: user-saver dispose
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82 user>> dup changed?>> [ users update-user ] [ drop ] if ;
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84 : save-user-after ( user -- )
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85 <user-saver> &dispose drop ;
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87 : init-user ( user -- )
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88 [ [ logged-in-user set ] [ save-user-after ] bi ] when* ;
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90 M: realm call-responder* ( path responder -- response )
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92 dup logged-in-username dup [ users get-user ] when init-user
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95 : encode-password ( string salt -- bytes )
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96 [ utf8 encode ] [ 4 >be ] bi* append
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97 realm get checksum>> checksum-bytes ;
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99 : >>encoded-password ( user string -- user )
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100 32 random-bits [ encode-password ] keep
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101 [ >>password ] [ >>salt ] bi* ; inline
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103 : valid-login? ( password user -- ? )
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104 [ salt>> encode-password ] [ password>> ] bi = ;
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106 : check-login ( password username -- user/f )
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107 users get-user dup [ [ valid-login? ] keep and ] [ 2drop f ] if ;
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109 : if-secure-realm ( quot -- )
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110 realm get secure>> [ if-secure ] [ call ] if ; inline
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112 TUPLE: secure-realm-only < filter-responder ;
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114 C: <secure-realm-only> secure-realm-only
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116 M: secure-realm-only call-responder*
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117 '[ , , call-next-method ] if-secure-realm ;
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119 TUPLE: protected < filter-responder description capabilities ;
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121 : <protected> ( responder -- protected )
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125 : check-capabilities ( responder user/f -- ? )
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127 { [ dup not ] [ 2drop f ] }
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128 { [ dup deleted>> 1 = ] [ 2drop f ] }
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129 [ [ capabilities>> ] bi@ subset? ]
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132 M: protected call-responder* ( path responder -- response )
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136 dup logged-in-user get check-capabilities
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137 [ call-next-method ] [ 2drop realm get login-required* ] if
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138 ] if-secure-realm ;
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140 : <auth-boilerplate> ( responder -- responder' )
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141 <boilerplate> { realm "boilerplate" } >>template ;
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143 : password-mismatch ( -- * )
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144 "passwords do not match" validation-error
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145 validation-failed ;
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147 : same-password-twice ( -- )
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148 "new-password" value "verify-password" value =
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149 [ password-mismatch ] unless ;
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151 : user-exists ( -- * )
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152 "username taken" validation-error
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153 validation-failed ;
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