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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>This summer I was able to connect to my (slightly) modified
DBus daemon over a TCP connection using the following options in my session
configuration file:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
<listen>tcp:host=localhost,bind=*,port=6667,family=ipv4</listen>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> <listen>unix:tmpdir=/tmp</listen><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> <auth>EXTERNAL</auth><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:6.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><auth>ANONYMOUS</auth><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:6.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The small modification to the DBus daemon was an additional
call to <o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:6.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>dbus_connection_set_allow_anonymous
(new_connection,</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=black><span
style='color:black'>TRUE);<o:p></o:p></span></font></span></font></p>
<p class=MsoNormal style='text-indent:6.0pt'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>in the bus.c </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>new_connection_callback()
function.</span></font><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:6.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Recently I cloned the development head when I saw that Bug <a
href="http://bugs.freedesktop.org/show_bug.cgi?id=15393">15393</a> had been
applied that allows for anonymous authorization with the new
<allow_anonymous/> tag added to the system/session configuration options.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-indent:6.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I rebuilt my DBus library and daemon and attempted to
connect to it using a Python DBus client on my PC (the daemon is running on a
target platform). Fortunately, I have a debugger on the DBus daemon and I can
see it detect the new connection (via TCP), set the connection so that it
allows anonymous users, but unfortunately, it still attempts to do local
authorization via SCM_CREDS because it ends up in do_authentication(). I’ve
verified in the debugger that ANONYMOUS is added as a valid authorization
mechanism.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Can anyone suggest why I’m seeing this behavior? I
thought the ANONYMOUS option would cause the daemon to forgo authorization via
SCM_CREDS. Does the daemon always try to do SCM_CREDS authorization even for
non-local (domain) sockets? Since I have this in a debugger, I’m able to
set breakpoints pretty much anywhere so I’m open to investigating this in
more detail. I suspect, however, that I must not fully understand the expected
behavior.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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