User:Mdengler

Revision as of 12:37, 16 October 2011 (view source) Mdengler (Talk | contribs) (add aegis trick) ← Older edit		Revision as of 15:44, 17 October 2011 (view source) Mdengler (Talk | contribs) (add python tricks section) Newer edit →
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		+
		+	=== Python tricks ===
		+
		+	==== QtMobility Accelerometer example ====
		+
		+	<pre class="code">
		+	import sys, os
		+
		+	from PySide import QtCore, QtGui, QtDeclarative, QtOpenGL
		+	from QtMobility import Sensors
		+
		+	class AccelListener(QtCore.QObject):
		+	def __init__(self):
		+	QtCore.QObject.__init__(self)
		+	self.rotation = (0.0, 0.0, 0.0)
		+
		+	@QtCore.Slot()
		+	def on_reading_changed(self):
		+	accel = self.sender()
		+	reading = accel.reading()
		+	self.rotation = (reading.x(),
		+	reading.y(),
		+	reading.z())
		+	print "rotation = %s" % str(self.rotation)
		+
		+
		+	app = QtGui.QApplication(sys.argv)
		+	accel = Sensors.QAccelerometer()
		+
		+	accel_listener = AccelListener()
		+	accel.readingChanged.connect(accel_listener.on_reading_changed)
		+	accel.start()
		+
		+	sys.exit(app.exec_())
		+	</pre>

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Revision as of 15:44, 17 October 2011

I'm a python developer in real life and enjoyed hacking on my N900 so much that I wanted to continue with the N9/N950. My application for the N950 was accepted and I'm starting the two projects:

• tron-like game port
• location-based ringtone management

Contents 1 scratchbox on Fedora 1.1 start / login 1.2 quick and dirty package build 1.3 things to do once 1.4 my Harmattan debs 1.5 background 2 skype trick 3 dbus tricks 4 Checking whether Aegis is securing a file / inode 5 command-line coding workflow 6 N950 data storage and backup locations 7 Python tricks 7.1 QtMobility Accelerometer example

scratchbox on Fedora

start / login

sudo /scratchbox/sbin/sbox_ctl start && sudo /scratchbox/sbin/sbox_sync && /scratchbox/login

quick and dirty package build

apt-get source python-minimal
cd python-defaults-2.6.6-3+squeeze4/
dpkg-buildpackage -sa -rfakeroot -kmartin@martindengler.com
fakeroot apt-get install debiandoc-sgml lsb-release
dpkg-buildpackage -sa -rfakeroot -kmartin@martindengler.com
aegis-manifest -d

things to do once

• edit /etc/apt/sources.list in scratchbox (TODO: include what?)
• copy / create you GPG private key in .gnupg
• patch /scratchbox/users/*/targets/HARMATTAN_*/usr/lib/python2.6/urllib2.py if you're going to use the rpm/packaged osc, since you will have a problem with scratchbox's urllib2.py as in http://bugs.python.org/issue9639

my Harmattan debs

http://repo.pub.meego.com/home:/mdengler/MeeGo_1.2_Harmattan_Maemo.org_MeeGo_1.2_Harmattan_standard/

background

• Aegis
• Nokia Packaging Guide
• aegis xsd
• Debian New Maintainer's Guide
• [1]
• Desktop file entry spec

skype trick

http://wiki.meego.com/Migrating_from_N900_to_N950#GTalk_and_Skype_account_setup

dbus tricks

qdbus --system org.freedesktop.DBus / org.freedesktop.DBus.ListNames dbus-send --system --type=method_call --print-reply --dest=com.nokia.time /com/nokia/time org.freedesktop.DBus.Introspectable.Introspect

dbus-send --system --type=method_call --print-reply --dest=com.nokia.time /com/nokia/time com.nokia.time.enable_alarms boolean:"false"

dbus-send --system --type=method_call --print-reply --dest=com.nokia.time /com/nokia/time com.nokia.time.alarms_enabled

dbus-send --system --type=method_call --print-reply --dest=com.nokia.time /com/nokia/time com.nokia.time.get_cookies_by_attributes dict:string:string:"",""

Checking whether Aegis is securing a file / inode

~ # ls -i /bin/sh

144908 /bin/sh

~ # sha1sum /bin/sh 7fd44caa86b259e8724f5da10adfcc7fee4e0a16 /bin/sh ~ # grep 144908 /sys/kernel/security/validator/hashlist 9990003 144908 (0,0,33261)S no 7fd44caa86b259e8724f5da10adfcc7fee4e0a16

1. note how both the inode number and sha1sum are present

~ # ls -i /etc/mce/mce.ini

143850 /etc/mce/mce.ini

~ # grep 143850 /sys/kernel/security/validator/hashlist

1. nothing there - so aegis isn't monitoring it

command-line coding workflow

from http://www.developer.nokia.com/Community/Discussion/showthread.php?227292-Problem-deploying-project-on-N950-using-MADDE

N950 data storage and backup locations

Item	Filesystem	Backup
Contacts
Recent Calls
Web history
Messages
Email
Pictures (Gallery/Camera)
Music
Videos
Calendar
Documents
Feeds
Accounts
Clock (Alarms)
Settings
Notes
Autostart applications	/usr/share/autostart/tracker-miner-fs.desktop
Extensions & Status menu applications	/usr/share/meegotouch/applicationextensions
Application Launcher icons	/usr/share/applications and /usr/share/applications/installer-extra
QuickLaunch Bar Application Launcher icons	/etc/xdg/meegotouchhome-nokia/applications/

Python tricks

QtMobility Accelerometer example

import sys, os

from PySide import QtCore, QtGui, QtDeclarative, QtOpenGL
from QtMobility import Sensors

class AccelListener(QtCore.QObject):
    def __init__(self):
        QtCore.QObject.__init__(self)
        self.rotation = (0.0, 0.0, 0.0)

    @QtCore.Slot()
    def on_reading_changed(self):
        accel = self.sender()
        reading = accel.reading()
        self.rotation = (reading.x(),
                         reading.y(),
                         reading.z())
        print "rotation = %s" % str(self.rotation)


app = QtGui.QApplication(sys.argv)
accel = Sensors.QAccelerometer()

accel_listener = AccelListener()
accel.readingChanged.connect(accel_listener.on_reading_changed)
accel.start()

sys.exit(app.exec_())