factor/extra/furnace/sessions/sessions.factor

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Factor
Executable File

! Copyright (C) 2008 Doug Coleman, Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: assocs kernel math.intervals math.parser namespaces
random accessors quotations hashtables sequences continuations
fry calendar combinators destructors alarms io.server
db db.tuples db.types
http http.server http.server.dispatchers http.server.filters
html.elements
furnace furnace.cache ;
IN: furnace.sessions
TUPLE: session < server-state uid namespace user-agent client changed? ;
: <session> ( id -- session )
session new-server-state ;
session "SESSIONS"
{
{ "uid" "UID" { VARCHAR 255 } }
{ "namespace" "NAMESPACE" FACTOR-BLOB +not-null+ }
{ "user-agent" "USER_AGENT" TEXT +not-null+ }
{ "client" "CLIENT" TEXT +not-null+ }
} define-persistent
: get-session ( id -- session )
dup [ session get-state ] when ;
GENERIC: init-session* ( responder -- )
M: object init-session* drop ;
M: dispatcher init-session* default>> init-session* ;
M: filter-responder init-session* responder>> init-session* ;
TUPLE: sessions < server-state-manager domain verify? ;
: <sessions> ( responder -- responder' )
sessions new-server-state-manager
t >>verify? ;
: (session-changed) ( session -- )
t >>changed? drop ;
: session-changed ( -- )
session get (session-changed) ;
: sget ( key -- value )
session get namespace>> at ;
: sset ( value key -- )
session get
[ namespace>> set-at ] [ (session-changed) ] bi ;
: schange ( key quot -- )
session get
[ namespace>> swap change-at ] keep
(session-changed) ; inline
: uid ( -- uid )
session get uid>> ;
: set-uid ( uid -- )
session get [ (>>uid) ] [ (session-changed) ] bi ;
: init-session ( session -- )
session [ sessions get init-session* ] with-variable ;
: touch-session ( session -- )
sessions get touch-state ;
: remote-host ( -- string ) remote-address get host>> ;
: empty-session ( -- session )
f <session>
H{ } clone >>namespace
remote-host >>client
user-agent >>user-agent
dup touch-session ;
: begin-session ( -- session )
empty-session [ init-session ] [ insert-tuple ] [ ] tri ;
! Destructor
TUPLE: session-saver session ;
C: <session-saver> session-saver
M: session-saver dispose
session>> dup changed?>> [
[ touch-session ] [ update-tuple ] bi
] [ drop ] if ;
: save-session-after ( session -- )
<session-saver> &dispose drop ;
: existing-session ( path session -- response )
[ session set ] [ save-session-after ] bi
sessions get responder>> call-responder ;
: session-id-key "__s" ;
: cookie-session-id ( request -- id/f )
session-id-key get-cookie
dup [ value>> string>number ] when ;
: post-session-id ( request -- id/f )
session-id-key swap request-params at string>number ;
: request-session-id ( -- id/f )
request get dup method>> {
{ "GET" [ cookie-session-id ] }
{ "HEAD" [ cookie-session-id ] }
{ "POST" [ post-session-id ] }
} case ;
: verify-session ( session -- session )
sessions get verify?>> [
dup [
dup
[ client>> remote-host = ]
[ user-agent>> user-agent = ]
bi and [ drop f ] unless
] when
] when ;
: request-session ( -- session/f )
request-session-id get-session verify-session ;
: <session-cookie> ( id -- cookie )
session-id-key <cookie>
"$sessions" resolve-base-path >>path
sessions get timeout>> from-now >>expires
sessions get domain>> >>domain ;
: put-session-cookie ( response -- response' )
session get id>> number>string <session-cookie> put-cookie ;
M: sessions modify-form ( responder -- )
drop session get id>> session-id-key hidden-form-field ;
M: sessions call-responder* ( path responder -- response )
sessions set
request-session [ begin-session ] unless*
existing-session put-session-cookie ;
: logout-all-sessions ( uid -- )
session new swap >>uid delete-tuples ;