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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/124140/">https://git.reviewboard.kde.org/r/124140/</a>
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<p style="margin-top: 0;">On June 21st, 2015, 9:24 p.m. PDT, <b>Albert Vaca Cintora</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I've tested it in two phones and it worked at the beginning, but it breaks easily. One of the things I've done that caused problems is: turn the phone WiFi off, unpair, and turn the WiFi on again (so the other device doesn't know that we have unpaired). After that, they started misbehaving: it was not possible to pair them again, they disappeared and reappeared intermittently from the list of available devices of each other, etc. I've seen some crashes in the logcat, this is a stack trace from one of them: http://pastebin.com/4KfpnsYm
You should do some testing (manual if it can't be automated) to make sure that all this edge cases work correctly and the devices are always doing what they should do. Debugging this will definitely take you more time than the time you have before the mid-term evaluation, but I don't think it makes sense to start working on the Qt side until this is not perfect or we will just carry over the same bugs.
Also, the code needs a lot of clean up and you will also need to polish a bit the user interface (see my comments below).</pre>
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<p>On June 22nd, 2015, 9:35 a.m. PDT, <b>Vineet Garg</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">It is an old bug, I tested on master branch too. If device is unpaired while wifi is off, it can't be paired again until it is unpaired from other device. But yeah disappearance and reappearance is an issue I will fix that.</p></pre>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">We can't merge this until it's free of bugs, so make sure to do thorough testing: you should be catching most of the bugs before sending the code review, not me after.</pre>
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<p style="margin-top: 0;">On June 21st, 2015, 9:24 p.m. PDT, <b>Albert Vaca Cintora</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/124140/diff/1/?file=380819#file380819line56" style="color: black; font-weight: bold; text-decoration: underline;">build.gradle</a>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> compile 'org.bouncycastle:bcprov-jdk16:1.46'</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> compile 'io.netty:netty-all:4.0.23.Final'</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> compile 'org.bouncycastle:bcpkix-jdk15on:1.52'</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Nice that you decided to go with Netty. Is the other package that you changed a dependency of Netty? It was there originally for the SFTP plugin, have you tested that the new version is still compatible and the SFTP plugin still works?</pre>
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<p>On June 22nd, 2015, 9:35 a.m. PDT, <b>Vineet Garg</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">SFTP plugin depends on MINA sshd, so MINA core is removed. Also Bouncycastle bcpkix version is used for generation of certificates, I cant find any use of bcprov version in the project.</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">If I remember correctly, bcprov was a dependency of SSHD. But if you say it's working I guess it's okay then.</pre>
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<p style="margin-top: 0;">On June 21st, 2015, 9:24 p.m. PDT, <b>Albert Vaca Cintora</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/124140/diff/1/?file=380820#file380820line28" style="color: black; font-weight: bold; text-decoration: underline;">res/layout/activity_pair.xml</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="nt"><LinearLayout</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_width=</span><span class="s">"match_parent"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_height=</span><span class="s">"wrap_content"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:orientation=</span><span class="s">"vertical"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:visibility=</span><span class="s">"gone"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:id=</span><span class="s">"@+id/secret_keys"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_gravity=</span><span class="s">"center"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:paddingTop=</span><span class="s">"5dp"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:paddingBottom=</span><span class="s">"5dp"</span><span class="nt">></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="nt"><TextView</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:id=</span><span class="s">"@+id/my_device_key"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_width=</span><span class="s">"fill_parent"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_height=</span><span class="s">"wrap_content"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:text=</span><span class="s">"@string/pairing_accept"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_weight=</span><span class="s">"1"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:id=</span><span class="s">"@+id/remote_device_key"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_width=</span><span class="s">"fill_parent"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_height=</span><span class="s">"wrap_content"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:text=</span><span class="s">"@string/pairing_reject"</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:layout_weight=</span><span class="s">"1"</span> <span class="nt">/></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="na">android:text=</span><span class="s">"@string/security_message"</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This info is not user friendly at all:
- When not using SSL it doesn't make any sense to display it.
- Most users don't care about this and/or don't know what to do with that information. For that reason it should not be in the main interface.
My proposal for improvement: Put it in an options menu (three dots) named "Encryption info" or something like this. If there is no SSL it should say so: "The other device doesn't use a recent version of KDE Connect, using the legacy encryption method.". If there is SSL available, show the key hashes.</pre>
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<p>On June 22nd, 2015, 9:35 a.m. PDT, <b>Vineet Garg</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">So you want the encryption info to be in device activity or in pair activity? If in device activity, you want that it should assume that certificate are correct during pairing?</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I was suggesting it to be in the pair activity, just not in the main screen but in a menu,</pre>
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<p style="margin-top: 0;">On June 21st, 2015, 9:24 p.m. PDT, <b>Albert Vaca Cintora</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/124140/diff/1/?file=380829#file380829line314" style="color: black; font-weight: bold; text-decoration: underline;">src/org/kde/kdeconnect/Device.java</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">private void pairingDone() {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">String</span> <span class="n">encodedCertificate</span> <span class="o">=</span> <span class="n">Base64</span><span class="o">.</span><span class="na">encodeToString</span><span class="o">(</span><span class="n">certificate</span><span class="o">.</span><span class="na">getEncoded</span><span class="o">(),</span> <span class="mi">0</span><span class="o">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">editor</span><span class="o">.</span><span class="na">putString</span><span class="o">(</span><span class="s">"certificate"</span><span class="o">,</span> <span class="n">encodedCertificate</span><span class="o">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I liked your previous approach with the PairingHandler much better: each type of link could store the information it needed in the Handler without having to put it inside device like this.
Also with the handlers every device could use different pairing mechanisms, which can be very useful:
- We could implement tests with a fake pairing handler.
- A Bluetooth link could rely on the pairing made by Bluetooth, and not ask the user to re-pair in KDE Connect.
I think you should have finished the "refactor" task before starting to implement this, because without refactoring the pairing now the code is much dirtier here... before we can merge this, I would like to see the pairing-related things refactored out of this class.</pre>
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<p>On June 22nd, 2015, 9:35 a.m. PDT, <b>Vineet Garg</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Actually earlier we had in mind that each link should manage its own encryption, but since a normal link can be easily converted to a ssl link by adding a ssl handler, make two link will just cause a lot of code duplication and a over head on device to maintain two link where only one will be used most of the time.
Also I am a little bit unsure that if device are paired due to pairing by bluetooh and now they want to connect using LAN, what should be the behaviour? If either of one is paired, pair all and create a meta pairing package and send it or create pairing packets by each pairing handler and send them which will captured by respective pairing handler on other side.
Also since Netty supports handlers in channel pipeline, I was thinking to add SslHandler if link is on SSL or add Encryption and Decryption Handler if not in pipeline. What do you say ?</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">We don't need to create two links now, but I still would like the code to be splitted out because in a future we might want to create more types of links.
I agree, though, that we should have a way to pair once per device and that it should work for every link (so paired/not paired should be a property of the Device), but we can worry about that in a future. A possible approach might be that once a link has been paired by the user, the other links can have an alternate way of "pairing" (exchanging whatever they need to exchange) without requiring the user interaction, or something like that.</pre>
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<p>- Albert</p>
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<p>On June 21st, 2015, 5:41 a.m. PDT, Vineet Garg wrote:</p>
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<div>Review request for kdeconnect and Albert Vaca Cintora.</div>
<div>By Vineet Garg.</div>
<p style="color: grey;"><i>Updated June 21, 2015, 5:41 a.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
kdeconnect-android
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><ul style="padding: 0;text-rendering: inherit;margin: 0 0 0 1em;line-height: inherit;white-space: normal;">
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">Since MINA was tying hands in adding SSL, ported over Netty which has a good, clean and easy interface and a larger user and developer base.</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">Added support to setup links on SSL</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">Links automatically removed if wrong certificate is sent</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">Shows keys based on hash of certificate to check right certificates are received</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">Added a preference to use SSL, as it is experienced to cause high CPU usage on devices.</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">Corrected unit tests, LanLinkProvider is removed as it is nearly impossible to write it with current design. Will find a way</li>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Tesed on some device with where both supports SSL, also with PC where ssl is not supported, working fine. Need a little bit more testing with more devices.</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>build.gradle <span style="color: grey">(6520c1c)</span></li>
<li>res/layout/activity_pair.xml <span style="color: grey">(6b73edc)</span></li>
<li>res/values/strings.xml <span style="color: grey">(c128342)</span></li>
<li>res/xml/general_preferences.xml <span style="color: grey">(82ab0ca)</span></li>
<li>src/org/kde/kdeconnect/Backends/BaseLink.java <span style="color: grey">(579a7af)</span></li>
<li>src/org/kde/kdeconnect/Backends/LanBackend/LanLink.java <span style="color: grey">(5994142)</span></li>
<li>src/org/kde/kdeconnect/Backends/LanBackend/LanLinkProvider.java <span style="color: grey">(ae26958)</span></li>
<li>src/org/kde/kdeconnect/Backends/LoopbackBackend/LoopbackLink.java <span style="color: grey">(add92f8)</span></li>
<li>src/org/kde/kdeconnect/Backends/LoopbackBackend/LoopbackLinkProvider.java <span style="color: grey">(bd9c41b)</span></li>
<li>src/org/kde/kdeconnect/BackgroundService.java <span style="color: grey">(5e3d8c2)</span></li>
<li>src/org/kde/kdeconnect/Device.java <span style="color: grey">(3262aef)</span></li>
<li>src/org/kde/kdeconnect/Helpers/SecurityHelpers/RsaHelper.java <span style="color: grey">(PRE-CREATION)</span></li>
<li>src/org/kde/kdeconnect/Helpers/SecurityHelpers/SslHelper.java <span style="color: grey">(PRE-CREATION)</span></li>
<li>src/org/kde/kdeconnect/NetworkPackage.java <span style="color: grey">(f62b5d0)</span></li>
<li>src/org/kde/kdeconnect/UserInterface/MainSettingsActivity.java <span style="color: grey">(1b0e230)</span></li>
<li>src/org/kde/kdeconnect/UserInterface/PairActivity.java <span style="color: grey">(7a45751)</span></li>
<li>tests/org/kde/kdeconnect/DeviceTest.java <span style="color: grey">(5d3383d)</span></li>
<li>tests/org/kde/kdeconnect/LanLinkProviderTest.java <span style="color: grey">(fe7863a)</span></li>
<li>tests/org/kde/kdeconnect/LanLinkTest.java <span style="color: grey">(d3d94c9)</span></li>
<li>tests/org/kde/kdeconnect/NetworkPackageTest.java <span style="color: grey">(a21114e)</span></li>
</ul>
<p><a href="https://git.reviewboard.kde.org/r/124140/diff/" style="margin-left: 3em;">View Diff</a></p>
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