[Bugs] #1645 UNSP: sugar-session opens remote listening ports

[Sugar Labs Bugs]

#1645: sugar-session opens remote listening ports
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    Reporter:  sascha_silbe               |          Owner:  erikos                     
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar-toolkit              |        Version:  Git as of bugdate          
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  New                        
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 sugar-session currently listens on TCP (both IPv4 and IPv6) ports open to
 anyone (not just localhost). Even though (or arguably especially because)
 nothing seems to actually read from those sockets, it's bad style to do
 so.

 They seem to get opened in src/sugar/gsm-xsmp.c. The code suggests there's
 a workaround if Xtrans.h is available, but unfortunately
 HAVE_X11_XTRANS_XTRANS_H only ever gets checked, but never set.

 Given the copyright header (mentioning Novell) I guess this got copied
 from somewhere (what package? it's not documented in the file). The same
 source probably has an appropriate autoconf snippet we should copy as
 well.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1645>
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