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1 <?php
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2
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3 /**
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4 * Identicon
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5 *
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6 * Plugin to display a unique github-like identification icons
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7 * for contacts/addresses that do not have a photo image.
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8 *
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9 * @todo: Make it optional and configurable via user preferences
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10 * @todo: Make color palettes match the curren skin
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11 * @todo: Implement optional SVG generator
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12 *
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13 * @license GNU GPLv3+
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14 * @author Aleksander Machniak <alec@alec.pl>
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15 * @website http://roundcube.net
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16 */
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17 class identicon extends rcube_plugin
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18 {
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19 public $task = 'addressbook';
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20
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21
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22 /**
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23 * Plugin initilization.
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24 */
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25 function init()
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26 {
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27 $this->add_hook('contact_photo', array($this, 'contact_photo'));
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28 }
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29
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30 /**
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31 * 'contact_photo' hook handler to inject an identicon image
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32 */
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33 function contact_photo($args)
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34 {
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35 // pre-conditions, exit if photo already exists or invalid input
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36 if (!empty($args['url']) || !empty($args['data'])
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37 || (empty($args['record']) && empty($args['email']))
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38 ) {
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39 return $args;
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40 }
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41
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42 $rcmail = rcmail::get_instance();
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43
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44 // supporting edit/add action may be tricky, let's not do this
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45 if ($rcmail->action == 'show' || $rcmail->action == 'photo') {
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46 $email = $args['email'];
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47 if (!$email && $args['record']) {
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48 $addresses = rcube_addressbook::get_col_values('email', $args['record'], true);
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49 if (!empty($addresses)) {
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50 $email = $addresses[0];
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51 }
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52 }
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53
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54 if ($email) {
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55 require_once __DIR__ . '/identicon_engine.php';
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56
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57 $identicon = new identicon_engine($email);
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58
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59 if ($rcmail->action == 'show') {
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60 // set photo URL using data-uri
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61 if (($icon = $identicon->getBinary()) && ($icon = base64_encode($icon))) {
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62 $mimetype =$identicon->getMimetype();
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63 $args['url'] = sprintf('data:%s;base64,%s', $mimetype, $icon);
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64 }
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65 }
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66 else {
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67 // send the icon to the browser
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68 $identicon = new identicon_engine($email);
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69 if ($identicon->sendOutput()) {
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70 exit;
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71 }
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72 }
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73 }
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74 }
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75
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76 return $args;
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77 }
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78 }
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