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Jorge Castro: Juju is now on Github

Planet Ubuntu - Wed, 2014-06-04 13:55

We’ve got some changes in Juju and the Juju ecosystem that have been landing this week.

Ian Booth announced the move of Juju core to You can find all our work at:

Workflow instructions for contributing are available in the CONTRIBUTING file. Ian also adds:

Once the dust settles on the migration of juju-core, we’ll also be migrating various dependencies like goose, gwacl, gomaasapi and golxc.

You can find the code for Juju Core at:

On a related note, we have a one way mirror of the Juju Charm Store as well:

You can combine these with Francesco Banconi’s git-deploy plugin to deploy right from github, as an example:

juju git-deploy charms/mysql

Hopefully 2-way syncing will be possible soon, stay tuned!

David Murphy: Enabling Students in a Digital Age: Charlie Reisinger at TEDxLancaster

Planet Ubuntu - Wed, 2014-06-04 13:44

This is really inspiring to me, on several levels: as an Ubuntu member, as a Canonical, and as a school governor.

Not only are they deploying Ubuntu and other open-source software to their students, they are encouraging those students to tinker with their laptops, and – better yet – some of those same students are directly involved in the development, distribution, and providing support for their peers. All of those students will take incredibly valuable experience with them into their future careers.

Well done.

The post Enabling Students in a Digital Age: Charlie Reisinger at TEDxLancaster appeared first on David Murphy.

David Tomaschik: Secuinside Quals 2014: Simple Login

Planet Ubuntu - Wed, 2014-06-04 02:08

In this challenge, we received the source for a site with a pretty basic login functionality. Aside from some boring forms, javascript, and css, we have this PHP library for handling the session management:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50<? class common{ public function getidx($id){ $id = mysql_real_escape_string($id); $info = mysql_fetch_array(mysql_query("select idx from member where id='".$id."'")); return $info[0]; } public function getpasswd($id){ $id = mysql_real_escape_string($id); $info = mysql_fetch_array(mysql_query("select password from member where id='".$id."'")); return $info[0]; } public function islogin(){ if( preg_match("/[^0-9A-Za-z]/", $_COOKIE['user_name']) ){ exit("cannot be used Special character"); } if( $_COOKIE['user_name'] == "admin" ) return 0; $salt = file_get_contents("../../long_salt.txt"); if( hash('crc32',$salt.'|'.(int)$_COOKIE['login_time'].'|'.$_COOKIE['user_name']) == $_COOKIE['hash'] ){ return 1; } return 0; } public function autologin(){ } public function isadmin(){ if( $this->getidx($_COOKIE['user_name']) == 1){ return 1; } return 0; } public function insertmember($id, $password){ $id = mysql_real_escape_string($id); mysql_query("insert into member(id, password) values('".$id."', '".$password."')") or die(); return 1; } } ?>

Some first impressions:

  • MySQL calls seem to be properly escaped.
  • The auth cookie is using the super-weak crc32.
  • Setting the user_name cookie to 'admin' won't work out for us.

In index.php, we see:

1 2 3if($common->islogin()){ if($common->isadmin()) $f = "Flag is : ".__FLAG__; else $f = "Hello, Guest!";

So, presumably, the correct user is actually 'admin', but we can't log in as that. So what to do? Well, after playing around for a bit, I realized one important point. By default, MySQL uses case-insensitive string comparisons but, of course, PHP's == operator is case-sensitive. So a mixed-case version of admin will pass the test in islogin() but will return the user we want in getidx(), but we can't log in as any variation of admin as the password will still be needed.

That brings us to the hash. Perhaps we could fake the hash for an uppercased admin user? While we could probably brute force the salt, that would take a while. However, crc32 is vulnerable to trivial hash length extension attacks, if you can set the internal state to an existing hash. That is: crc32(a+b) == crc32(b, crc32(a)). So, since the salt is at the beginning, if we have the crc32 for a user, we can easily concatenate anything on the end and still generate a valid hash. (Assuming an implementation of crc32 that allows you to set the existing internal state.)

One rub: while python allows you to set the state, it doesn't implement the same CRC-32 as PHP! (I thought there was only one CRC-32, but apparently the one in python's binascii and zlib modules is the zlib CRC-32, and the PHP hash one is the bz2 CRC-32.) So I was able to find the relevant lookup table for the BZ2 crc-32 and write this implementation:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18import struct crc_table = [ 0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L, ...snip... 0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L ] def bzcrc(s, init=None): if init: state = struct.unpack('>I', struct.pack('<I', ~init & 0xffffffff))[0] else: state = 0xffffffff for c in s: state = state & 0xffffffff state = ((state << 8) ^ (crc_table[(state >> 24) ^ (ord(c))])) return hex(struct.unpack('>I', struct.pack('<I', ~state & 0xffffffff))[0])

And yes, I do some weird stuff with byte-order swapping, but it works for the one off. So, we logged in as the user 'a', got a hash, then changed the user_name cookie to aDMIN, and calculated the new hash via: bzcrc('DMIN', <existing hash>). Updated the hash cookie, refresh, and we've got a flag.

Ubuntu Server blog: Meeting Minutes: June 3rd, 2014

Planet Ubuntu - Tue, 2014-06-03 19:27
  • Review ACTION points from previous meeting
  • U Development
  • Server & Cloud Bugs (caribou)
  • Weekly Updates & Questions for the QA Team (psivaa)
  • Weekly Updates & Questions for the Kernel Team (smb, sforshee)
  • Ubuntu Server Team Events
  • Open Discussion
  • Announce next meeting date, time and chair
  • vUDS is next week (Tues-Thurs) – Pat (gaughen) is still working on topics, so if someone has a suggestion please talk to her.
  • bug 1319555 should not be on the list – list needs refreshing
  • bug 1315052 has fix committed upstream
  • bug 1317587 is in progress
  • The team is working on getting the blueprints filled out completely.  Expecting them to be solidified around vUDS.
  • Louis (caribou) created blueprint: and working on getting it filled in and approved.
  • kdump may be added to vUDS agenda
  • There’s an Openstack meetup in London on Thursday – James (jamespage) and Liam (gnuoy) are attending.
Next Meeting

Next meeting will be on Tuesday, June 10th at 16:00 UTC in #ubuntu-meeting.

Additional logs @

Ubuntu Kernel Team: Kernel Team Meeting Minutes – June 03, 2014

Planet Ubuntu - Tue, 2014-06-03 17:13
Meeting Minutes

IRC Log of the meeting.

Meeting minutes.


20140603 Meeting Agenda

ARM Status

No new update this week.

Release Metrics and Incoming Bugs

Release metrics and incoming bug data can be reviewed at the following link:

Milestone Targeted Work Items    apw    core-1405-kernel    2 work items       ogasawara    core-1405-kernel    2 work items   

Status: Utopic Development Kernel

We have most recently rebased our Utopic kernel to v3.15-rc8 and
uploaded (3.15.0-5.10). We are planning on converging on the v3.16
kernel for Utopic. It also appears that the Utopic release date has
been pushed out a week to Thurs Oct 23 in order to not conflict with
the Linux Plumbers Conference.
Important upcoming dates:
Mon-Wed June 10 – 12, UOS – Ubuntu Online Summit (~1 week away)
Thurs Jun 26 – Alpha 1 (~3 weeks away)
Fri Jun 27 – Kernel Freeze for 12.04.5 and 14.04.1 (~3 weeks away)

Status: CVE’s

The current CVE status can be reviewed at the following link:

Status: Stable, Security, and Bugfix Kernel Updates – Trusty/Saucy/Precise/Lucid

Status for the main kernels, until today (June 3):

  • Lucid – Verification and Testing
  • Precise – Verification and Testing
  • Quantal – No changes this cycle
  • Saucy – Verification and Testing
  • Trusty – Verification and Testing

    Current opened tracking bugs details:


    For SRUs, SRU report is a good source of information:



    cycle: 18-May through 07-Jun
    16-May Last day for kernel commits for this cycle
    18-May – 24-May Kernel prep week.
    25-May – 31-May Bug verification & Regression testing.
    01-Jun – 07-Jun Regression testing & Release to -updates.

Open Discussion or Questions? Raise your hand to be recognized

No open discussions.

David Planella: A new era for the Ubuntu community team, or business as usual

Planet Ubuntu - Tue, 2014-06-03 17:06

A sample of the wider Ubuntu Community team, with Canonicalers and volunteer core app developers

After the recent news of Jono stepping down as the Ubuntu Community Manager to seek new challenges at XPRIZE, a new era in Ubuntu begins. Jono’s leadership, passion and drive to continually push the boundaries have been contagious over the years, and have been the catalyst for growing the unique community of individuals that defines Ubuntu today.

Jono is now joining the ranks of non-Canonical Ubuntu members, and while this will change the angle of participation, I’m certain that it won’t change his energy and dedication one bit. But most importantly, it’s a testament to his work that his former team will continue to thrive and take up the torch in pushing those boundaries.

For us, it will be business as usual in the sense of implementing our roadmap, continuing to grow a strong and open community, being innovative in how we do it, and coordinating the logistics around our plans. So not much will be different in that regard, but obviously some organizational bits will change.

As part of the transition, the Ubuntu Community Team at Canonical in full, that is, Michael Hall, Daniel Holbach, Alan Pope, Nicholas Skaggs and myself, will now be hosting the weekly Ubuntu Q&A, starting today at 18:00 UTC on Ubuntu On Air (click here for the time at your location).

The Ubuntu Community Team Q&A

Openness, both in being a transparent and welcoming community, is one of the core values of Ubuntu, and we believe the channels should be always open for a healthy information flow and to help contributors get involved.

As such, the Ubuntu Community Team Q&A will continue to provide a weekly, 1-hour-long session open for participation to anyone who wants to ask their questions about Ubuntu. In fact, as in former editions, you can ask the Community Team just anything about Free Software, Technology, or whatever you come up with. As before, the only questions we won’t answer are those related to technical support, where you’ll be much better served using Ask Ubuntu, the Ubuntu forums or IRC.

Join the Ubuntu Community Team Q&A at 18:00 UTC today and ask your questions >

The Ubuntu Online Summit is coming soon!

Also, following the thread of events and participation, the new Ubuntu Online Summit (UOS) is coming up very soon, and it’s an excellent opportunity to learn about getting involved in Ubuntu, organizing or presenting the plans of the different Ubuntu teams for the next months.

UOS will be held on June 10th – 12th and it will be a combination of the former Ubuntu Developer Summit and the more user-facing events we’ve been organizing in the past. This opens the door to a wider audience that can follow a richer mix of developer and user or contributor content.

If you want to learn about the details, check out Michael’s UOS post on how it’s going to work. If you want to contribute and make a difference in Ubuntu, do register a session too!

Looking forward to seeing you soon!

The post A new era for the Ubuntu community team, or business as usual appeared first on David Planella.

Svetlana Belkin: Calling for Community UOS 14.06 Tracks

Planet Ubuntu - Tue, 2014-06-03 14:09

The Ubuntu Online Submit is next week (June 12 – June 14) and we are still seeking proposals for all of the tracks that are listed in this blog post.  Since I’m one of the Community Track leads, you may ask me questions on how to propose a session/track or any other questions.  You can also suggest ideas to me and I can help you get them into a session/track.  Scheduling questions can be directed to me also.

See you at the UOS!




Daniel Pocock: Click to dial for mobile users of your web sites

Planet Ubuntu - Tue, 2014-06-03 09:47

If there was a trivial way to let mobile phone users call you from your web site, just by adding a single HTML element to the page, would you do it?

In fact, there is. It doesn't even require a mobile WebRTC browser. It works for virtually any smartphone and a growing number of desktops too.

Introducing the tel: URI

The tel: URI is defined in RFC 3966.

For most mobile phone users, if they click a link to a tel: URI, their browser will copy the link into their dialer for convenience.

To protect users against calls to 0900 premium rate numbers, the user still has to make one more click to confirm they want to dial.


Here is a tel: URI:


Here is how to create a link with it:

<a href="tel:+44-20-7135-7070">020 7135 7070 (from abroad: +44 20 7135 7070)</a>

and here is how it looks on the page:

Call me on 020 7135 7070 (from abroad: +44 20 7135 7070)

and here is what appears on the mobile device after a user clicks the tel: URI link:

For desktop users too

Many desktop users can also benefit from tel: URIs. If they have a modern telephone system in their office, the system administrator may have already added a tel: URI handler to their desktop.

Anyone with a software PBX or a SIP account can also potentially use the TBDialOut extension for Firefox to help convert tel: URIs into sip: URIs or URLs for some bespoke dialer.

For those who want extra convenience, the Telify extension for Firefox will look for phone numbers in any HTML page and display them as tel: URIs so you can click them even if the web developer overlooked this.

Nathan Haines: Ubuntu Installfest with OCLUG

Planet Ubuntu - Tue, 2014-06-03 03:35

Last Saturday, Ubuntu held an installfest along with the Orange County Linux Users Group (OCLUG) in Fullerton, California. Thanks to the enthusiasm of OCLUG and its members, and the assistance of volunteers from the Ubuntu California Local Community Team, the event was a success.

OCLUG used to hold Linux installfests all the time, but has been fairly dormant the past couple of years, with meeting attendance small but consistent. Late last year, they considered holding an installfest as a way to get more interest from students and the community. The LUG agreed that it was best to promote a single distribution to reduce confusion and that teasing or jokes about other software—even though good-natured—was to be avoided during the event. A simple majority agreed that a default Ubuntu install was the best distro to offer to new users and it was agreed that anyone who came in wanting to install specific software would be welcomed as well. This was a compromise that everyone was happy with and it allowed the installfest to be a focused event.

OCLUG meets once a month at California State University Fullerton, and so advertising for the event was done with flyers, which were posted around the campus and in nearby coffee shops. It contained a simple pitch for Ubuntu, a URL for OCLUG and a QR code for the OCLUG installfest information page. We also emailed school faculty with information about the installfest, attaching a PDF of the flyers as well as a single-page “talking points” flyer that had a bulleted list talking about Ubuntu, installfests, and OCLUG, to encourage faculty to discuss the event with their students.

Ubuntu California supplied their secondary banner and table cloth, and Canonical arranged for reimbursement for pizza costs. Both were funded via the Ubuntu community donations from the Ubuntu download page, so I am very grateful to the generosity of the community. Canonical also provided Ubuntu 14.04 LTS discs and a conference pack with giveaway items. I designed name badges for both the OCLUG volunteers and the installfest attendees, and I also adapted the installfest liability release forms and data sheet forms from the Installfest HOWTO so that they matched the flyers and other documents.

When the day of the installfest finally arrived, we had four Ubuntu volunteers and nine OCLUG volunteers. We had 7 attendees, with 4 who brought their computers for an install and 3 more who simply wanted to attend and learn more about Ubuntu. Everyone arrived on time and enjoyed the donuts and coffee provided by OCLUG as is usual for their meetings. We had a greeter or two by the parking structure to direct attendees to the classroom. An OCLUG volunteer passed out the installfest forms and I had the Ubuntu volunteers distribute a standard swag pack for each attendee: Ubuntu lanyard, sticker sheet, pen, button, and Desktop install disc. Stephan Ingram, the president of OCLUG welcomed everyone and introduced me, then I gave my presentation to the group. I briefly discussed operating systems and the ideals of Free Software so that I could go into detail about what and why Ubuntu offers a complete computing solution that is elegant and easy to use. I described the Ubuntu and local Linux communities, and then quickly explained the release forms and discussed some USB keys that were available for purchase. Then installation began.

Everyone helped out and the attendees were able to get Ubuntu installed on their machines and have conversations about computer and software, and everyone had a good time. I burned some 32-bit Ubuntu discs for a couple attendees and passed out the Xubuntu discs I had prepared for slower machines. The pizza came, and while everyone was eating I showed off Ubuntu on my phone, demonstrating phone and desktop convergence using the Weather app. After the pizza was finished, I returned to the front of the room to demonstrate the key features of the Unity desktop interface, discuss the benefits of Unity’s online search and how to turn it off, and how to enable Autohide, change the desktop background, and use the Ubuntu Software Center and the Unity Dash to search for and install applications. Using Stellarium as an example, I then proceeded to launch and demonstrate this virtual planetarium software as an example of the rich content available with Free Software solutions.

We ended the installfest with a giveaway. I drew names of attendees and we gave away an Android tablet and an external phone/tablet battery provided by OCLUG members, and then we gave away three exclusive Ubuntu Cloud t-shirts provided by Canonical in their conference pack. By the time the installfest was over, we had installed Ubuntu successfully on every target machine, passed out 35 Ubuntu Desktop discs and 3 Ubuntu Server discs, sold 5 USB drives, and impressed a faculty member who promised to promote the next installfest to his students because he said there was no reason they should have to pay for scientific software if they could have high quality software for free. He also discussed academic year timing with the OCLUG president and based on that there are preliminary plans to repeat the installfest in September when we should be able to attract more students.

Looking back, the flyers were designed for on-campus use but traveled further, so they should give a little more location context, and the installfest page should probably include specific event information instead of relying on the OCLUG main page. We only had a 4-hour window for the event and I still feel this isn’t quite long enough. I didn’t have much time to dedicate to the Ubuntu volunteers, all of whom were volunteering for the first time and while I felt bad about this, they all stepped up and excelled in a way that made me very proud. For September, I intend to engage the university’s radio, television, and newspapers to help spread the word a bit further on campus.

Photos of the event are available to download at

I’d like to encourage anyone in the Ubuntu community to modify and adapt any printable resource that would be helpful to them. All printable media as well as the source documents, the main presentation, and sanitized attendee records are available to download at


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