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Bug 1423013 - Can't make a dbus method call to the com.redhat.RHSM1.RegisterServer Start method until /etc/dbus-1/system.conf is edited
Summary: Can't make a dbus method call to the com.redhat.RHSM1.RegisterServer Start me...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: subscription-manager
Version: 7.3
Hardware: Unspecified
OS: Unspecified
high
low
Target Milestone: rc
: ---
Assignee: Alex Wood
QA Contact: Sean Toner
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-02-16 21:00 UTC by Sean Toner
Modified: 2017-08-01 19:20 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-08-01 19:20:42 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2017:2083 0 normal SHIPPED_LIVE python-rhsm and subscription-manager bug fix and enhancement update 2017-08-01 18:14:19 UTC

Description Sean Toner 2017-02-16 21:00:56 UTC 
Description of problem
======================

Making a dbus call to start the RegisterServer using the dbus-send or busctl utilities fails with an Access Denied.  This appears to be caused by the /etc/dbus-1/system.conf file rejecting send_type="method_call"


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

[root@stoner-rhel-74 ~]# rpm -qa | grep subscription
subscription-manager-gui-1.19.1-1.git.9.908316a.el7.x86_64
subscription-manager-1.19.1-1.git.9.908316a.el7.x86_64
subscription-manager-initial-setup-addon-1.19.1-1.git.9.908316a.el7.x86_64
subscription-manager-migration-1.19.1-1.git.9.908316a.el7.x86_64
subscription-manager-migration-data-2.0.34-1.git.0.2384ef4.el7.noarch


How reproducible
================

Always


Steps to Reproduce:
===================

See Actual results below

Actual results:
===============

[root@stoner-rhel-74 ~]# dbus-send --system --print-reply --dest='com.redhat.RHSM1' '/com/redhat/RHSM1/RegisterServer' com.redhat.RHSM1.RegisterServer.Start
Error org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.26" (uid=0 pid=2324 comm="dbus-send --system --print-reply --dest=com.redhat") interface="com.redhat.RHSM1.RegisterServer" member="Start" error name="(unset)" requested_reply="0" destination="com.redhat.RHSM1" (uid=0 pid=812 comm="python /usr/libexec/rhsm-service ")


Expected results:
=================

[root@stoner-rhel-74 ~]# dbus-send --system --print-reply --dest='com.redhat.RHSM1' '/com/redhat/RHSM1/RegisterServer' com.redhat.RHSM1.RegisterServer.Start
method return sender=:1.5 -> dest=:1.4 reply_serial=2
   string "unix:abstract=/var/run/dbus-XP0szXbntD,guid=e234053b12b7e78b2c48cac758a60d17"


Additional info:
================

The fix I made was to edit the /etc/dbus-1/system.conf file like this:

    <!-- <deny send_type="method_call"/> -->

    <!-- Signals and reply messages (method returns, errors) are allowed
         by default -->
    <allow send_type="method_call"/>

Then systemctl restart dbus.service, and reissue the dbus-send.
Comment 2 Alex Wood 2017-03-16 21:10:35 UTC 
Fix up for review with https://github.com/candlepin/subscription-manager/pull/1562
Comment 4 Sean Toner 2017-04-17 19:09:56 UTC 
To verify this BZ I did not have to edit the /etc/dbus-1/system.conf file.  The send_type did not have to be edited to get dbus to work and dbus.service did not need to be restarted:

[root@stoner-rhel-74 subman1.9.7]# cat /etc/dbus-1/system.conf | grep send_type
    <deny send_type="method_call"/>
    <allow send_type="signal"/>
    <allow send_requested_reply="true" send_type="method_return"/>
    <allow send_requested_reply="true" send_type="error"/>


And running the original command that got an access denied now works successfully:

[root@stoner-rhel-74 subman1.9.7]# dbus-send --system --print-reply --dest='com.redhat.RHSM1' '/com/redhat/RHSM1/RegisterServer' com.redhat.RHSM1.RegisterServer.Start
method return sender=:1.37865 -> dest=:1.37926 reply_serial=2
   string "unix:abstract=/var/run/dbus-hFLSsUWi7q,guid=1cc8ab09c9c716d9f755819358f50415"


Verified on:

[root@stoner-rhel-74 ~]# rpm -qa | grep subscription
subscription-manager-1.19.7-1.el7.x86_64
subscription-manager-plugin-container-1.19.7-1.el7.x86_64
subscription-manager-migration-data-2.0.35-1.el7.noarch
subscription-manager-plugin-ostree-1.19.7-1.el7.x86_64
subscription-manager-migration-1.19.7-1.el7.x86_64
subscription-manager-initial-setup-addon-1.19.7-1.el7.x86_64
subscription-manager-gui-1.19.7-1.el7.x86_64
Comment 5 errata-xmlrpc 2017-08-01 19:20:42 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:2083
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