mod_posix: Move everything to util.startup
This allows greater control over the order of events.
Notably, the internal ordering between daemonization, initialization of
libunbound and setup of signal handling is sensitive.
libunbound starts a separate thread for processing DNS requests.
If this thread is started before signal handling has been set up, it
will not inherit the signal handlers and instead behave as it would have
before signal handlers were set up, i.e. cause the whole process to
immediately exit.
libunbound is usually initialized on the first DNS request, usually
triggered by an outgoing s2s connection attempt.
If daemonization happens before signals have been set up, signals may
not be processed at all.
# MUC: Room registration and reserved nicknames
[Client] Romeo
jid: user@localhost
password: password
[Client] Juliet
jid: user2@localhost
password: password
[Client] Rosaline
jid: user3@localhost
password: password
-----
Romeo connects
Romeo sends:
<presence to="room@conference.localhost/Romeo">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Romeo receives:
<presence from='room@conference.localhost/Romeo'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<status code='201'/>
<item jid="${Romeo's full JID}" affiliation='owner' role='moderator'/>
<status code='110'/>
</x>
</presence>
Romeo receives:
<message type='groupchat' from='room@conference.localhost'><subject/></message>
# Submit config form
Romeo sends:
<iq id='config1' to='room@conference.localhost' type='set'>
<query xmlns='http://jabber.org/protocol/muc#owner'>
<x xmlns='jabber:x:data' type='submit'>
<field var='FORM_TYPE'>
<value>http://jabber.org/protocol/muc#roomconfig</value>
</field>
</x>
</query>
</iq>
Romeo receives:
<iq id="config1" from="room@conference.localhost" type="result">
</iq>
Romeo sends:
<iq id='member1' to='room@conference.localhost' type='set'>
<query xmlns='http://jabber.org/protocol/muc#admin'>
<item affiliation='member' jid="${Juliet's JID}" />
</query>
</iq>
Romeo receives:
<message from='room@conference.localhost'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item jid="${Juliet's JID}" affiliation='member' />
</x>
</message>
Romeo receives:
<iq from='room@conference.localhost' id='member1' type='result'/>
# Juliet connects, and joins the room
Juliet connects
Juliet sends:
<presence to="room@conference.localhost/Juliet">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Juliet receives:
<presence from="room@conference.localhost/Romeo" />
Juliet receives:
<presence from="room@conference.localhost/Juliet" />
Juliet receives:
<message type='groupchat' from='room@conference.localhost'><subject/></message>
Romeo receives:
<presence from="room@conference.localhost/Juliet" />
# Juliet retrieves the registration form
Juliet sends:
<iq id='jw81b36f' to='room@conference.localhost' type='get'>
<query xmlns='jabber:iq:register'/>
</iq>
Juliet receives:
<iq type='result' from='room@conference.localhost' id='jw81b36f'>
<query xmlns='jabber:iq:register'>
<x type='form' xmlns='jabber:x:data'>
<field type='hidden' var='FORM_TYPE'>
<value>http://jabber.org/protocol/muc#register</value>
</field>
<field type='text-single' label='Nickname' var='muc#register_roomnick'>
<required/>
</field>
</x>
</query>
</iq>
Juliet sends:
<iq id='nv71va54' to='room@conference.localhost' type='set'>
<query xmlns='jabber:iq:register'>
<x xmlns='jabber:x:data' type='submit'>
<field var='FORM_TYPE'>
<value>http://jabber.org/protocol/muc#register</value>
</field>
<field var='muc#register_roomnick'>
<value>Juliet</value>
</field>
</x>
</query>
</iq>
Juliet receives:
<presence from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item affiliation='member' jid="${Juliet's full JID}" role='participant'/>
<status code='110'/>
</x>
</presence>
Juliet receives:
<iq type='result' from='room@conference.localhost' id='nv71va54'/>
# Juliet discovers her reserved nick
Juliet sends:
<iq id='getnick1' to='room@conference.localhost' type='get'>
<query xmlns='http://jabber.org/protocol/disco#info' node='x-roomuser-item'/>
</iq>
Juliet receives:
<iq type='result' from='room@conference.localhost' id='getnick1'>
<query xmlns='http://jabber.org/protocol/disco#info' node='x-roomuser-item'>
<identity category='conference' name='Juliet' type='text'/>
</query>
</iq>
# Juliet leaves the room:
Juliet sends:
<presence type="unavailable" to="room@conference.localhost/Juliet" />
Juliet receives:
<presence type='unavailable' from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item jid="${Juliet's full JID}" affiliation='member' role='none'/>
<status code='110'/>
</x>
</presence>
Romeo receives:
<presence from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item jid="${Juliet's full JID}" affiliation='member' role='participant'/>
</x>
</presence>
# Rosaline connect and tries to join the room as Juliet
Rosaline connects
Rosaline sends:
<presence to="room@conference.localhost/Juliet">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Rosaline receives:
<presence type='error' from='room@conference.localhost/Juliet'>
<error type='cancel' by='room@conference.localhost'>
<conflict xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
</error>
</presence>
# In a heated moment, Juliet unregisters from the room
Juliet sends:
<iq type='set' to='room@conference.localhost' id='unreg1'>
<query xmlns='jabber:iq:register'>
<remove/>
</query>
</iq>
Juliet receives:
<iq type='result' from='room@conference.localhost' id='unreg1'/>
# Romeo is notified of Juliet's sad decision
Romeo receives:
<message from='room@conference.localhost'>
<x xmlns='http://jabber.org/protocol/muc#user' scansion:strict='true'>
<item jid="${Juliet's JID}" affiliation='none' />
</x>
</message>
# Rosaline attempts once more to sneak into the room, disguised as Juliet
Rosaline sends:
<presence to="room@conference.localhost/Juliet">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Rosaline receives:
<presence from='room@conference.localhost/Romeo'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item affiliation='owner' role='moderator'/>
</x>
</presence>
Rosaline receives:
<presence from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item affiliation='none' jid="${Rosaline's full JID}" role='participant'/>
<status code='110'/>
</x>
</presence>
Romeo receives:
<presence from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item affiliation='none' jid="${Rosaline's full JID}" role='participant'/>
</x>
</presence>
# On discovering the ruse, Romeo restores Juliet's nick and status within the room
Romeo sends:
<iq id='member1' to='room@conference.localhost' type='set'>
<query xmlns='http://jabber.org/protocol/muc#admin'>
<item affiliation='member' jid="${Juliet's JID}" nick='Juliet' />
</query>
</iq>
# Rosaline is evicted from the room
Romeo receives:
<presence from='room@conference.localhost/Juliet' type='unavailable'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<status code='307'/>
<item affiliation='none' role='none' jid="${Rosaline's full JID}">
<reason>This nickname is reserved</reason>
</item>
</x>
</presence>
# An out-of-room affiliation change is received for Juliet
Romeo receives:
<message from='room@conference.localhost'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item jid="${Juliet's JID}" affiliation='member' />
</x>
</message>
Romeo receives:
<iq type='result' id='member1' from='room@conference.localhost' />
Rosaline receives:
<presence type='unavailable' from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<status code='307'/>
<item affiliation='none' jid="${Rosaline's full JID}" role='none'>
<reason>This nickname is reserved</reason>
</item>
<status code='110'/>
</x>
</presence>
# Rosaline, frustrated, attempts to get back into the room...
Rosaline sends:
<presence to="room@conference.localhost/Juliet">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
# ...but once again, is denied
Rosaline receives:
<presence type='error' from='room@conference.localhost/Juliet'>
<error type='cancel' by='room@conference.localhost'>
<conflict xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
</error>
</presence>
# Juliet, however, quietly joins the room with success
Juliet sends:
<presence to="room@conference.localhost/Juliet">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Juliet receives:
<presence from="room@conference.localhost/Romeo" />
Juliet receives:
<presence from="room@conference.localhost/Juliet" />
Juliet receives:
<message type='groupchat' from='room@conference.localhost'><subject/></message>
Romeo receives:
<presence from="room@conference.localhost/Juliet" />
# Romeo checks whether he has reserved his own nick yet
Romeo sends:
<iq id='getnick1' to='room@conference.localhost' type='get'>
<query xmlns='http://jabber.org/protocol/disco#info' node='x-roomuser-item'/>
</iq>
# But no nick is returned, as he hasn't registered yet!
Romeo receives:
<iq type='result' from='room@conference.localhost' id='getnick1'>
<query xmlns='http://jabber.org/protocol/disco#info' node='x-roomuser-item' scansion:strict='true' />
</iq>
# Romeo updates his own registration
Romeo sends:
<iq id='jw81b36f' to='room@conference.localhost' type='get'>
<query xmlns='jabber:iq:register'/>
</iq>
Romeo receives:
<iq type='result' from='room@conference.localhost' id='jw81b36f'>
<query xmlns='jabber:iq:register'>
<x type='form' xmlns='jabber:x:data'>
<field type='hidden' var='FORM_TYPE'>
<value>http://jabber.org/protocol/muc#register</value>
</field>
<field type='text-single' label='Nickname' var='muc#register_roomnick'>
<required/>
</field>
</x>
</query>
</iq>
Romeo sends:
<iq id='nv71va54' to='room@conference.localhost' type='set'>
<query xmlns='jabber:iq:register'>
<x xmlns='jabber:x:data' type='submit'>
<field var='FORM_TYPE'>
<value>http://jabber.org/protocol/muc#register</value>
</field>
<field var='muc#register_roomnick'>
<value>Romeo</value>
</field>
</x>
</query>
</iq>
Romeo receives:
<presence from='room@conference.localhost/Romeo'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item affiliation='owner' jid="${Romeo's full JID}" role='moderator'/>
<status code='110'/>
</x>
</presence>
Romeo receives:
<iq type='result' from='room@conference.localhost' id='nv71va54'/>
Juliet receives:
<presence from='room@conference.localhost/Romeo'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item role='moderator' xmlns='http://jabber.org/protocol/muc#user' affiliation='owner'/>
</x>
</presence>
# Romeo discovers his reserved nick
Romeo sends:
<iq id='getnick1' to='room@conference.localhost' type='get'>
<query xmlns='http://jabber.org/protocol/disco#info' node='x-roomuser-item'/>
</iq>
Romeo receives:
<iq type='result' from='room@conference.localhost' id='getnick1'>
<query xmlns='http://jabber.org/protocol/disco#info' node='x-roomuser-item'>
<identity category='conference' name='Romeo' type='text'/>
</query>
</iq>
# To check the status of the room is as expected, Romeo requests the member list
Romeo sends:
<iq id='member3' to='room@conference.localhost' type='get'>
<query xmlns='http://jabber.org/protocol/muc#admin'>
<item affiliation='member'/>
</query>
</iq>
Romeo receives:
<iq from='room@conference.localhost' type='result' id='member3'>
<query xmlns='http://jabber.org/protocol/muc#admin'>
<item jid="${Juliet's JID}" affiliation='member' nick='Juliet'/>
</query>
</iq>
Juliet sends:
<presence type="unavailable" to="room@conference.localhost/Juliet" />
Juliet receives:
<presence from='room@conference.localhost/Juliet' type='unavailable' />
Romeo receives:
<presence type='unavailable' from='room@conference.localhost/Juliet' />
# Rosaline joins as herself
Rosaline sends:
<presence to="room@conference.localhost/Rosaline">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Rosaline receives:
<presence from="room@conference.localhost/Romeo" />
Rosaline receives:
<presence from="room@conference.localhost/Rosaline" />
Rosaline receives:
<message type='groupchat' from='room@conference.localhost'><subject/></message>
Romeo receives:
<presence from='room@conference.localhost/Rosaline'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item jid="${Rosaline's full JID}" affiliation='none' role='participant'/>
</x>
</presence>
# Rosaline tries to register her own nickname, but unaffiliated
# registration is disabled by default
Rosaline sends:
<iq id='reg990' to='room@conference.localhost' type='get'>
<query xmlns='jabber:iq:register'/>
</iq>
Rosaline receives:
<iq type='error' from='room@conference.localhost' id='reg990'>
<error type='auth'>
<registration-required xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
</error>
</iq>
Rosaline sends:
<iq id='reg991' to='room@conference.localhost' type='set'>
<query xmlns='jabber:iq:register'>
<x xmlns='jabber:x:data' type='submit'>
<field var='FORM_TYPE'>
<value>http://jabber.org/protocol/muc#register</value>
</field>
<field var='muc#register_roomnick'>
<value>Romeo</value>
</field>
</x>
</query>
</iq>
Rosaline receives:
<iq id='reg991' type='error'>
<error type='auth'>
<registration-required xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
</error>
</iq>
# Romeo reserves her nickname for her
Romeo sends:
<iq id='member2' to='room@conference.localhost' type='set'>
<query xmlns='http://jabber.org/protocol/muc#admin'>
<item affiliation='member' jid="${Rosaline's JID}" nick='Rosaline' />
</query>
</iq>
Romeo receives:
<presence from='room@conference.localhost/Rosaline'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item affiliation='member' role='participant' jid="${Rosaline's full JID}">
<actor jid="${Romeo's full JID}" nick='Romeo'/>
</item>
</x>
</presence>
Romeo receives:
<iq type='result' id='member2' from='room@conference.localhost' />
Rosaline receives:
<presence from='room@conference.localhost/Rosaline'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item affiliation='member' role='participant' jid="${Rosaline's full JID}">
<actor nick='Romeo' />
</item>
<status xmlns='http://jabber.org/protocol/muc#user' code='110'/>
</x>
</presence>
# Romeo sets their their own nickname via admin query (see #1273)
Romeo sends:
<iq to="room@conference.localhost" id="reserve" type="set">
<query xmlns="http://jabber.org/protocol/muc#admin">
<item nick="Romeo" affiliation="owner" jid="${Romeo's JID}"/>
</query>
</iq>
Romeo receives:
<presence from="room@conference.localhost/Romeo">
<x xmlns="http://jabber.org/protocol/muc#user">
<item xmlns="http://jabber.org/protocol/muc#user" role="moderator" jid="${Romeo's full JID}" affiliation="owner">
<actor xmlns="http://jabber.org/protocol/muc#user" nick="Romeo"/>
</item>
<status xmlns="http://jabber.org/protocol/muc#user" code="110"/>
</x>
</presence>
Romeo receives:
<iq from="room@conference.localhost" id="reserve" type="result"/>