Linux Programming

conn = 0xadff00
register our name on the bus, and check for errors
TESTtest.signal.source
err.message = Connection ":1.77" is not allowed to own the service "TESTtest.signal.source" due to security policies in the configuration file
Failed dbus_bus_request_name: : Resource temporarily unavailable 

<!-- <limit name="max_connections_per_user">256</limit> -->
 <!-- <limit name="max_pending_service_starts">512</limit> -->
 <!-- <limit name="max_names_per_connection">512</limit> -->
 <!-- <limit name="max_match_rules_per_connection">512</limit> -->
 <!-- <limit name="max_replies_per_connection">128</limit> -->

  GNU nano 2.5.3                               File: session.conf                                                                    

<!-- This configuration file controls the per-user-login-session message bus.
     Add a session-local.conf and edit that rather than changing this
     file directly. -->

<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
  <!-- Our well-known bus type, don't change this -->
  <type>session</type>

  <!-- If we fork, keep the user's original umask to avoid affecting
       the behavior of child processes. -->
  <keep_umask/>

  <listen>unix:tmpdir=/tmp</listen>

  <!-- On Unix systems, the most secure authentication mechanism is
  EXTERNAL, which uses credential-passing over Unix sockets.

  This authentication mechanism is not available on Windows,
  is not suitable for use with the tcp: or nonce-tcp: transports,
  and will not work on obscure flavours of Unix that do not have
  a supported credentials-passing mechanism. On those platforms/transports,
  comment out the <auth> element to allow fallback to DBUS_COOKIE_SHA1. -->
  <auth>EXTERNAL</auth>

  <standard_session_servicedirs />

  <policy context="default">
    <!-- Allow everything to be sent -->
    <allow send_destination="*" eavesdrop="true"/>
    <!-- Allow everything to be received -->
    <allow eavesdrop="true"/>
    <!-- Allow anyone to own anything -->
    <allow own="*"/>
  </policy>

  <!-- Include legacy configuration location -->
  <include ignore_missing="yes">/etc/dbus-1/session.conf</include>

  <!-- Config files are placed here that among other things,
       further restrict the above policy for specific services. -->
  <includedir>session.d</includedir>

  <includedir>/etc/dbus-1/session.d</includedir>

  <!-- This is included last so local configuration can override what's
       in this standard file -->
  <include ignore_missing="yes">/etc/dbus-1/session-local.conf</include>

 <!-- Include legacy configuration location -->
  <include ignore_missing="yes">/etc/dbus-1/session.conf</include>

  <!-- Config files are placed here that among other things,
       further restrict the above policy for specific services. -->
  <includedir>session.d</includedir>

  <includedir>/etc/dbus-1/session.d</includedir>

  <!-- This is included last so local configuration can override what's
       in this standard file -->
  <include ignore_missing="yes">/etc/dbus-1/session-local.conf</include>

  <include if_selinux_enabled="yes" selinux_root_relative="yes">contexts/dbus_contexts</include>

  <!-- For the session bus, override the default relatively-low limits
       with essentially infinite limits, since the bus is just running
       as the user anyway, using up bus resources is not something we need
       to worry about. In some cases, we do set the limits lower than
       "all available memory" if exceeding the limit is almost certainly a bug,
       having the bus enforce a limit is nicer than a huge memory leak. But the
       intent is that these limits should never be hit. -->

  <!-- the memory limits are 1G instead of say 4G because they can't exceed 32-bit signed int max -->
  <limit name="max_incoming_bytes">1000000000</limit>
  <limit name="max_incoming_unix_fds">250000000</limit>
  <limit name="max_outgoing_bytes">1000000000</limit>
  <limit name="max_outgoing_unix_fds">250000000</limit>
  <limit name="max_message_size">1000000000</limit>
  <!-- We do not override max_message_unix_fds here since the in-kernel
       limit is also relatively low -->
  <limit name="service_start_timeout">120000</limit>
  <limit name="auth_timeout">240000</limit>
  <limit name="pending_fd_timeout">150000</limit>
  <limit name="max_completed_connections">100000</limit>
  <limit name="max_incomplete_connections">10000</limit>
  <limit name="max_connections_per_user">100000</limit>

 <limit name="service_start_timeout">120000</limit>
  <limit name="auth_timeout">240000</limit>
  <limit name="pending_fd_timeout">150000</limit>
  <limit name="max_completed_connections">100000</limit>
  <limit name="max_incomplete_connections">10000</limit>
  <limit name="max_connections_per_user">100000</limit>
  <limit name="max_pending_service_starts">10000</limit>
  <limit name="max_names_per_connection">50000</limit>
  <limit name="max_match_rules_per_connection">50000</limit>
  <limit name="max_replies_per_connection">50000</limit>

</busconfig>

jim@jim-desktop:/usr/DBUS/share/dbus-1$ ls
services  session.conf  session.d  system.conf  system.d  system-services
jim@jim-desktop:/usr/DBUS/share/dbus-1$ cd session.d
jim@jim-desktop:/usr/DBUS/share/dbus-1/session.d$ ls

<!--
This configuration file is no longer required and may be removed.

In older versions of dbus, this file defined the behaviour of the well-known
session bus. That behaviour is now determined by
/usr/DBUS/share/dbus-1/session.conf, which should not be edited.

For local configuration changes, create a file
session-local.conf or files matching session.d/*.conf in the same directory
as this one, with a <busconfig> element containing configuration directives.
These directives can override D-Bus or OS defaults.

For upstream or distribution-wide defaults that can be overridden
by a local sysadmin, create files matching
/usr/DBUS/share/dbus-1/session.d/*.conf instead.
-->
<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig></busconfig>

hcitool scan | grep '[[:xdigit:]]\{2\}:]\{5\}'

pi@pi:~ $ hcitool scan | grep '[[:xdigit:]]\{2\}:'
	00:50:B6:80:4D:5D	jim-desktop

pi@pi:~ $ hcitool scan | grep -i '[[:xdigit:]]\{2\}\(:[[:xdigit:]]\{2\}\)\{5\}'
	00:50:B6:80:4D:5Djim-desktop

system("sudo hcitool scan | grep '[[:xdigit:]]\{2\}:'2>&1  | tee /tmp/address.txt ");

<pre>pi@pi:/ $ sudo hcitool scan --info  --class 
Scanning ...

BD Address:	00:50:B6:80:4D:5D [mode 1, clkoffset 0x4dae]
Device class:	Computer, Desktop workstation (0x000104)
Manufacturer:	Broadcom Corporation (15)
LMP version:	2.0 (0x3) [subver 0x430e]
LMP features:	0xff 0xff 0x8d 0xfe 0x9b 0xf9 0x00 0x80
		<3-slot packets> <5-slot packets> <encryption> <slot offset> 
		<timing accuracy> <role switch> <hold mode> <sniff mode> 
		<park state> <RSSI> <channel quality> <SCO link> <HV2 packets> 
		<HV3 packets> <u-law log> <A-law log> <CVSD> <power control> 
		<transparent SCO> <broadcast encrypt> <EDR ACL 2 Mbps> 
		<EDR ACL 3 Mbps> <enhanced iscan> <interlaced iscan> 
		<interlaced pscan> <inquiry with RSSI> <extended SCO> 
		<EV4 packets> <EV5 packets> <AFH cap. slave> 
		<AFH class. slave> <3-slot EDR ACL> <5-slot EDR ACL> 
		<AFH cap. master> <AFH class. master> <EDR eSCO 2 Mbps> 
		<EDR eSCO 3 Mbps> <3-slot EDR eSCO> <extended features> 

pi@pi:/ $ sudo hcitool scan --info  --class 2>test.txt
-bash: test.txt: Permission denied

checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... PKG_CONFIG_DEBUG_SPEW variable enabling debug spew
Adding directory '/usr/local/lib/arm-linux-gnueabihf/pkgconfig' from PKG_CONFIG_PATH
Adding directory '/usr/local/lib/pkgconfig' from PKG_CONFIG_PATH
Adding directory '/usr/local/share/pkgconfig' from PKG_CONFIG_PATH
Adding directory '/usr/lib/arm-linux-gnueabihf/pkgconfig' from PKG_CONFIG_PATH
Adding directory '/usr/lib/pkgconfig' from PKG_CONFIG_PATH
Adding directory '/usr/share/pkgconfig' from PKG_CONFIG_PATH
Global variable definition 'pc_sysrootdir' = '/'
Global variable definition 'pc_top_builddir' = '$(top_builddir)'
no output option set, defaulting to --exists
Error printing disabled by default due to use of output options --exists, --atleast/exact/max-version, --list-all or no output option at all. Value of --print-errors: 1
Error printing enabled
yes
checking for C/C++ restrict keyword... __restrict