Bug 1256567 - OpenH264 (plugin-container) quietly aborts in enforcing
OpenH264 (plugin-container) quietly aborts in enforcing
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Lukas Vrabec
Fedora Extras Quality Assurance
Depends On:
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Reported: 2015-08-24 21:33 EDT by Joshua Roys
Modified: 2015-12-02 13:17 EST (History)
8 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2015-12-02 10:05:38 EST
Type: Bug
Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Joshua Roys 2015-08-24 21:33:56 EDT
Description of problem:
While attempting to setup a WebRTC gateway using H.264, much head banging eventually led to the realization that OpenH264, wrapped in plugin-container, was quietly aborting in the background causing the WebRTC video to never appear.

Version-Release number of selected component (if applicable):

How reproducible:
Attempt to make a WebRTC H.264 call in enforcing

Actual results:
$ export NSPR_LOG_FILE=/tmp/FF.log
$ export NSPR_LOG_MODULES=signaling:5,mtransport:5,timestamp:1
$ firefox &
$ tailf $NSPR_LOG_FILE
2015-08-25 00:57:55.859986 UTC - 1881392960[7fd36ee8e6e0]: [main|WebrtcVideoSessionConduit] VideoConduit.cpp:472: Init Initialization Done
2015-08-25 00:57:55.860110 UTC - 1881392960[7fd36ee8e6e0]: [main|WebrtcVideoSessionConduit] VideoConduit.cpp:769: ConfigureRecvMediaCodecs Configuring External H264 Receive Codec
2015-08-25 00:57:55.860155 UTC - 1881392960[7fd36ee8e6e0]: [main|WebrtcVideoSessionConduit] VideoConduit.cpp:782: ConfigureRecvMediaCodecs Successfully Set the codec H264
2015-08-25 00:57:55.869465 UTC - 1881392960[7fd36ee8e6e0]: [main|PeerConnectionMedia] PeerConnectionMedia.cpp:165: OnProxyAvailable: Proxy Available: 0
2015-08-25 00:57:56.348207 UTC - 1881392960[7fd36ee8e6e0]: [main|PeerConnectionImpl] PeerConnectionImpl.cpp:1967: Encountered media error! GMP Decode: GetGMPVideoDecoder failed.

Adding these rules to the running policy is not enough to get the plugin to function in enforcing:
type=AVC msg=audit(08/24/2015 21:04:42.653:1306) : avc:  denied  { create } for  pid=18366 comm=plugin-containe name=mozsandbox.htwkXG scontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:tmpfs_t:s0 tclass=dir permissive=1 
type=AVC msg=audit(08/24/2015 21:04:42.653:1307) : avc:  denied  { rmdir } for  pid=18366 comm=plugin-containe name=mozsandbox.htwkXG dev="tmpfs" ino=12895526 scontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:tmpfs_t:s0 tclass=dir permissive=1 
type=AVC msg=audit(08/24/2015 21:04:42.666:1308) : avc:  denied  { sys_chroot } for  pid=18368 comm=plugin-containe capability=sys_chroot  scontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tclass=capability permissive=1 

Crash post-semodule:

type=ANOM_ABEND msg=audit(08/24/2015 21:18:13.521:1313) : auid=roysjosh uid=roysjosh gid=roysjosh ses=1 subj=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 pid=18885 comm=plugin-containe exe=/usr/lib64/firefox/plugin-container sig=SIGSEGV 

Expected results:
Successful WebRTC call in enforcing.
Comment 1 Fedora End Of Life 2015-11-04 05:41:40 EST
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Comment 2 Fedora End Of Life 2015-12-02 10:05:47 EST
Fedora 21 changed to end-of-life (EOL) status on 2015-12-01. Fedora 21 is
no longer maintained, which means that it will not receive any further
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