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  • Committer: Teddy Hogeborn
  • Date: 2015-08-10 07:34:37 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 325.
  • Revision ID: teddy@recompile.se-20150810073437-3m8jgt13nqric6vf
Revert change to D-Bus API.

The D-Bus API signal CheckerCompleted is documented to provide a
wait(2) status value.  Since the server switched to using subprocess
to run checkers, it no longer has access to a wait(2) status value.  A
previous change to work around this made the D-Bus API incompatible.
Revert this change by constructing a fake wait(2) status value; this
keeps the D-Bus API stable.

* DBUS-API (CheckerCompleted): Revert incompatible change.
* mandos (ClientDBus.checker_callback): Construct fake wait(2) status.
* mandos-monitor (MandosClientWidget.checker_completed): Revert to
                                                         using
                                                         original API
                                                         with wait(2)
                                                         condition
                                                         value.

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Lines of Context:
network-protocol.txt
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The Mandos server announces itself as a Zeroconf service of type
2
 
"_mandos._tcp". The Mandos client sends a line of text where the first
3
 
whitespace-separated field is the protocol version, which currently is
4
 
"1".  The client and server then start a TLS protocol handshake with a
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slight quirk: the Mandos server program acts as a TLS "client" while
6
 
the connecting Mandos client acts as a TLS "server".  The Mandos
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client must supply an OpenPGP certificate, and the fingerprint of this
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certificate is used by the Mandos server to look up (in a list read
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from a file at start time) which binary blob to give the client.  No
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other authentication or authorization is done by the server.
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| Mandos Client                              |     | Mandos Server |
13
 
|--------------------------------------------+-----+---------------|
14
 
| Connect                                    |     |               |
15
 
| "1\r\n"                                    | ->  |               |
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| TLS handshake                              | <-> | TLS handshake |
17
 
| OpenPGP public key (part of TLS handshake) | ->  |               |
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|                                            | <-  | Binary blob   |
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|                                            |     | Close         |