include/newsletter.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2011 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 // {{{ class MailNotFound
  23
  24 class MailNotFound extends Exception {
  25 }
  26
  27 // }}}
  28
  29 // {{{ class NewsLetter
  30
  31 class NewsLetter
  32 {
  33     public $id;  // ID of the NL (in table newsletters)
  34     public $group;  // Short name of the group corresponding to the NL
  35     public $group_id;  // ID of that group
  36     public $name;  // Name of the NL (e.g "Lettre de Polytechnique.org", ...)
  37     public $cats;  // List of all categories for this NL
  38     public $criteria;  // PlFlagSet of allowed filters for recipient selection
  39
  40     protected $custom_css = false;
  41
  42     // Base name to use instead of the group short name for NLs without a custom CSS
  43     const FORMAT_DEFAULT_GROUP = 'default';
  44
  45     // Diminutif of X.net groups with a specific NL view
  46     const GROUP_XORG = 'Polytechnique.org';
  47     const GROUP_AX = 'AX';
  48     const GROUP_EP = 'Ecole';
  49
  50     // Searches on mutiple fields
  51     const SEARCH_ALL = 'all';
  52     const SEARCH_TITLE = 'title';
  53
  54
  55     // {{{ Constructor, NewsLetter retrieval (forGroup, getAll)
  56
  57     public function __construct($id)
  58     {
  59         // Load NL data
  60         $res = XDB::query('SELECT  nls.group_id, g.diminutif AS group_name,
  61                                    nls.name AS nl_name, nls.custom_css, nls.criteria
  62                              FROM  newsletters AS nls
  63                         LEFT JOIN  groups AS g ON (nls.group_id = g.id)
  64                             WHERE  nls.id = {?}',
  65                             $id);
  66         if (!$res->numRows()) {
  67             throw new MailNotFound();
  68         }
  69
  70         $data = $res->fetchOneAssoc();
  71         $this->id = $id;
  72         $this->group_id = $data['group_id'];
  73         $this->group = $data['group_name'];
  74         $this->name = $data['nl_name'];
  75         $this->custom_css = $data['custom_css'];
  76         $this->criteria = new PlFlagSet($data['criteria']);
  77
  78         // Load the categories
  79         $res = XDB::iterRow(
  80             'SELECT  cid, title
  81                FROM  newsletter_cat
  82               WHERE  nlid = {?}
  83            ORDER BY  pos', $id);
  84         while (list($cid, $title) = $res->next()) {
  85             $this->cats[$cid] = $title;
  86         }
  87     }
  88
  89     /** Retrieve the NL associated with a given group.
  90      * @p $group Short name of the group
  91      * @return A NewsLetter object, or null if the group doesn't have a NL.
  92      */
  93     public static function forGroup($group)
  94     {
  95         $res = XDB::query('SELECT  nls.id
  96                              FROM  newsletters AS nls
  97                         LEFT JOIN  groups AS g ON (nls.group_id = g.id)
  98                             WHERE  g.diminutif = {?}', $group);
  99         if (!$res->numRows()) {
 100             return null;
 101         }
 102         return new NewsLetter($res->fetchOneCell());
 103     }
 104
 105     /** Retrieve all newsletters
 106      * @return An array of $id => NewsLetter objects
 107      */
 108     public static function getAll($sort = 'id', $order = 'ASC')
 109     {
 110         $res = XDB::fetchAllAssoc('SELECT  n.id, g.nom AS group_name, n.name, n.custom_css, n.criteria, g.diminutif AS group_link
 111                                      FROM  newsletters AS n
 112                                INNER JOIN  groups      AS g ON (n.group_id = g.id)
 113                                  ORDER BY  ' . $sort . ' ' . $order);
 114         return $res;
 115     }
 116
 117     // }}}
 118     // {{{ Issue retrieval
 119
 120     /** Retrieve all issues which should be sent
 121      * @return An array of NLIssue objects to send (i.e state = 'new' and send_before <= today)
 122      */
 123     public static function getIssuesToSend()
 124     {
 125         $res = XDB::query('SELECT  id
 126                              FROM  newsletter_issues
 127                             WHERE  state = \'pending\' AND send_before <= NOW()');
 128         $issues = array();
 129         foreach ($res->fetchColumn() as $id) {
 130             $issues[$id] = new NLIssue($id);
 131         }
 132         return $issues;
 133     }
 134
 135     /** Retrieve a given issue of this NewsLetter
 136      * @p $name Name or ID of the issue to retrieve.
 137      * @return A NLIssue object.
 138      *
 139      * $name may be either a short_name, an ID or the special value 'last' which
 140      * selects the latest sent NL.
 141      * If $name is null, this will retrieve the current pending NL.
 142      */
 143     public function getIssue($name = null, $only_sent = true)
 144     {
 145         if ($name) {
 146             if ($name == 'last') {
 147                 if ($only_sent) {
 148                     $where = 'state = \'sent\' AND ';
 149                 } else {
 150                     $where = '';
 151                 }
 152                 $res = XDB::query('SELECT  MAX(id)
 153                                      FROM  newsletter_issues
 154                                     WHERE  ' . $where . ' nlid = {?}',
 155                                    $this->id);
 156             } else {
 157                 $res = XDB::query('SELECT  id
 158                                      FROM  newsletter_issues
 159                                     WHERE  nlid = {?} AND (id = {?} OR short_name = {?})',
 160                                   $this->id, $name, $name);
 161             }
 162             if (!$res->numRows()) {
 163                 throw new MailNotFound();
 164             }
 165             $id = $res->fetchOneCell();
 166         } else {
 167             $query = XDB::format('SELECT  id
 168                                     FROM  newsletter_issues
 169                                    WHERE  nlid = {?} AND state = \'new\'
 170                                 ORDER BY  id DESC', $this->id);
 171             $res = XDB::query($query);
 172             if ($res->numRows()) {
 173                 $id = $res->fetchOneCell();
 174             } else {
 175                 // Create a new, empty issue, and return it
 176                 $id = $this->createPending();
 177             }
 178         }
 179
 180         return new NLIssue($id, $this);
 181     }
 182
 183     /** Create a new, empty, pending newsletter issue
 184      * @p $nlid The id of the NL for which a new pending issue should be created.
 185      * @return Id of the newly created issue.
 186      */
 187     public function createPending()
 188     {
 189         XDB::execute('INSERT INTO  newsletter_issues
 190                               SET  nlid = {?}, state=\'new\', date=NOW(),
 191                                    title=\'to be continued\',
 192                                    mail_title=\'to be continued\'',
 193                                    $this->id);
 194         return XDB::insertId();
 195     }
 196
 197     /** Return all sent issues of this newsletter.
 198      * @return An array of (id => NLIssue)
 199      */
 200     public function listSentIssues($check_user = false, $user = null)
 201     {
 202         if ($check_user && $user == null) {
 203             $user = S::user();
 204         }
 205
 206         $res = XDB::query('SELECT  id
 207                              FROM  newsletter_issues
 208                             WHERE  nlid = {?} AND state = \'sent\'
 209                          ORDER BY  date DESC', $this->id);
 210         $issues = array();
 211         foreach ($res->fetchColumn() as $id) {
 212             $issue = new NLIssue($id, $this, false);
 213             if (!$check_user || $issue->checkUser($user)) {
 214                 $issues[$id] = $issue;
 215             }
 216         }
 217         return $issues;
 218     }
 219
 220     /** Return all issues of this newsletter, including invalid and sent.
 221      * @return An array of (id => NLIssue)
 222      */
 223     public function listAllIssues()
 224     {
 225         $res = XDB::query('SELECT  id
 226                              FROM  newsletter_issues
 227                             WHERE  nlid = {?}
 228                          ORDER BY  FIELD(state, \'pending\', \'new\') DESC, date DESC', $this->id);
 229         $issues = array();
 230         foreach ($res->fetchColumn() as $id) {
 231             $issues[$id] = new NLIssue($id, $this, false);
 232         }
 233         return $issues;
 234     }
 235
 236     /** Return the latest pending issue of the newsletter.
 237      * @p $create Whether to create an empty issue if no pending issue exist.
 238      * @return Either null, or a NL object.
 239      */
 240     public function getPendingIssue($create = false)
 241     {
 242         $res = XDB::query('SELECT  MAX(id)
 243                              FROM  newsletter_issues
 244                             WHERE  nlid = {?} AND state = \'new\'',
 245                             $this->id);
 246         $id = $res->fetchOneCell();
 247         if ($id != null) {
 248             return new NLIssue($id, $this);
 249         } else if ($create) {
 250             $id = $this->createPending();
 251             return new NLIssue($id, $this);
 252         } else {
 253             return null;
 254         }
 255     }
 256
 257     /** Returns a list of either issues or articles corresponding to the search.
 258      * @p $search The searched pattern.
 259      * @p $field The fields where to search, if none given, search in all possible fields.
 260      * @return The list of object found.
 261      */
 262     public function issueSearch($search, $field, $user)
 263     {
 264         $search = XDB::formatWildcards(XDB::WILDCARD_CONTAINS, $search);
 265         if ($field == self::SEARCH_ALL) {
 266             $where = '(title ' . $search . ' OR mail_title ' . $search . ' OR head ' . $search . ' OR signature ' . $search . ')';
 267         } elseif ($field == self::SEARCH_TITLE) {
 268             $where = '(title ' . $search . ' OR mail_title ' . $search . ')';
 269         } else {
 270             $where = $field . $search;
 271         }
 272         $list = XDB::fetchColumn('SELECT  DISTINCT(id)
 273                                     FROM  newsletter_issues
 274                                    WHERE  nlid = {?} AND state = \'sent\' AND ' . $where . '
 275                                 ORDER BY  date DESC',
 276                                  $this->id);
 277
 278         $issues = array();
 279         foreach ($list as $id) {
 280             $issue = new NLIssue($id, $this, false);
 281             if ($issue->checkUser($user)) {
 282                 $issues[] = $issue;
 283             }
 284         }
 285         return $issues;
 286     }
 287
 288     public function articleSearch($search, $field, $user)
 289     {
 290         $search = XDB::formatWildcards(XDB::WILDCARD_CONTAINS, $search);
 291         if ($field == self::SEARCH_ALL) {
 292             $where = '(a.title ' . $search . ' OR a.body ' . $search . ' OR a.append ' . $search . ')';
 293         } else {
 294             $where = 'a.' . $field . $search;
 295         }
 296         $list = XDB::fetchAllAssoc('SELECT  i.short_name, a.aid, i.id, a.title
 297                                       FROM  newsletter_art    AS a
 298                                 INNER JOIN  newsletter_issues AS i ON (a.id = i.id)
 299                                      WHERE  i.nlid = {?} AND i.state = \'sent\' AND ' . $where . '
 300                                   GROUP BY  a.id, a.aid
 301                                   ORDER BY  i.date DESC, a.aid',
 302                                    $this->id);
 303
 304         $articles = array();
 305         foreach ($list as $item) {
 306             $issue = new NLIssue($item['id'], $this, false);
 307             if ($issue->checkUser($user)) {
 308                 $articles[] = $item;
 309             }
 310         }
 311         return $articles;
 312     }
 313
 314     // }}}
 315     // {{{ Subscription related function
 316
 317     /** Unsubscribe a user from this newsletter
 318      * @p $uid UID to unsubscribe from the newsletter; if null, use current user.
 319      * @p $hash True if the uid is actually a hash.
 320      * @return True if the user was successfully unsubscribed.
 321      */
 322     public function unsubscribe($issue_id = null, $uid = null, $hash = false)
 323     {
 324         if (is_null($uid) && $hash) {
 325             // Unable to unsubscribe from an empty hash
 326             return false;
 327         }
 328         $user = is_null($uid) ? S::user()->id() : $uid;
 329         $field = $hash ? 'hash' : 'uid';
 330         $res = XDB::query('SELECT  uid
 331                              FROM  newsletter_ins
 332                             WHERE  nlid = {?} AND ' . $field . ' = {?}',
 333                             $this->id, $user);
 334         if (!$res->numRows()) {
 335             // No subscribed user with that UID/hash
 336             return false;
 337         }
 338         $user = $res->fetchOneCell();
 339
 340         XDB::execute('DELETE FROM  newsletter_ins
 341                             WHERE  nlid = {?} AND uid = {?}',
 342                             $this->id, $user);
 343         if (!is_null($issue_id)) {
 344             XDB::execute('UPDATE  newsletter_issues
 345                              SET  unsubscribe = unsubscribe + 1
 346                            WHERE  id = {?}',
 347                          $id);
 348         }
 349         return true;
 350     }
 351
 352     /** Subscribe a user to a newsletter
 353      * @p $user User to subscribe to the newsletter; if null, use current user.
 354      */
 355     public function subscribe($user = null)
 356     {
 357         if (is_null($user)) {
 358             $user = S::user();
 359         }
 360         if (self::maySubscribe($user)) {
 361             XDB::execute('INSERT IGNORE INTO  newsletter_ins (nlid, uid, last, hash)
 362                                       VALUES  ({?}, {?}, NULL, hash)',
 363                          $this->id, $user->id());
 364         }
 365     }
 366
 367     /** Subscribe a batch of users to a newsletter.
 368      * This skips 'maySubscribe' test.
 369      *
 370      * @p $user_ids Array of user IDs to subscribe to the newsletter.
 371      */
 372     public function bulkSubscribe($user_ids)
 373     {
 374         // TODO: use a 'bulkMaySubscribe'.
 375         XDB::execute('INSERT IGNORE INTO  newsletter_ins (nlid, uid, last, hash)
 376                                   SELECT  {?}, a.uid, NULL, NULL
 377                                     FROM  accounts AS a
 378                                    WHERE  a.uid IN {?}',
 379                      $this->id, $user_ids);
 380     }
 381
 382     /** Retrieve subscription state of a user
 383      * @p $user Target user; if null, use current user.
 384      * @return Boolean: true if the user has subscribed to the NL.
 385      */
 386     public function subscriptionState($user = null)
 387     {
 388         if (is_null($user)) {
 389             $user = S::user();
 390         }
 391         $res = XDB::query('SELECT  1
 392                              FROM  newsletter_ins
 393                             WHERE  nlid = {?} AND uid = {?}',
 394                           $this->id, $user->id());
 395         return ($res->numRows() == 1);
 396     }
 397
 398     /** Get the count of subscribers to the NL.
 399      * @return Number of subscribers.
 400      */
 401     public function subscriberCount()
 402     {
 403         return XDB::fetchOneCell('SELECT  COUNT(uid)
 404                                     FROM  newsletter_ins
 405                                    WHERE  nlid = {?}', $this->id);
 406     }
 407
 408     /** Get the count of subscribers with non valid redirection.
 409      */
 410     public function lostSubscriberCount()
 411     {
 412         return XDB::fetchOneCell('SELECT  COUNT(DISTINCT(n.uid))
 413                                     FROM  newsletter_ins         AS n
 414                               INNER JOIN  accounts               AS a ON (n.uid = a.uid)
 415                               INNER JOIN  account_types          AS t ON (t.type = a.type)
 416                                LEFT JOIN  email_redirect_account AS r ON (r.uid = a.uid AND r.flags = \'active\' AND r.broken_level < 3
 417                                                                           AND r.type != \'imap\' AND r.type != \'homonym\')
 418                                    WHERE  n.nlid = {?} AND r.redirect IS NULL AND a.state = \'active\' AND FIND_IN_SET(\'mail\', t.perms)',
 419                                  $this->id);
 420     }
 421
 422     /** Get the number of subscribers to the NL whose last received mailing was $last.
 423      * @p $last ID of the issue for which subscribers should be counted.
 424      * @return Number of subscribers
 425      */
 426     public function subscriberCountForLast($last)
 427     {
 428         return XDB::fetchOneCell('SELECT  COUNT(uid)
 429                                     FROM  newsletter_ins
 430                                    WHERE  nlid = {?} AND last = {?}', $this->id, $last);
 431     }
 432
 433     /** Retrieve the list of newsletters a user has subscribed to
 434      * @p $user User whose subscriptions should be retrieved (if null, use session user).
 435      * @return Array of newsletter IDs
 436      */
 437     public static function getUserSubscriptions($user = null)
 438     {
 439         if (is_null($user)) {
 440             $user = S::user();
 441         }
 442         $res = XDB::query('SELECT  nlid
 443                              FROM  newsletter_ins
 444                             WHERE  uid = {?}',
 445                           $user->id());
 446         return $res->fetchColumn();
 447     }
 448
 449     /** Retrieve the UserFilterBuilder for subscribers to this NL.
 450      * This is the place where NL-specific filters may be allowed or prevented.
 451      * @p $envprefix Prefix to use for env fields (cf. UserFilterBuilder)
 452      * @return A UserFilterBuilder object using the given env prefix
 453      */
 454     public function getSubscribersUFB($envprefix = '')
 455     {
 456         require_once 'ufbuilder.inc.php';
 457         return new UFB_NewsLetter($this->criteria, $envprefix);
 458     }
 459
 460     // }}}
 461     // {{{ Permissions related functions
 462
 463     /** For later use: check whether a given user may subscribe to this newsletter.
 464      * @p $user User whose access should be checked
 465      * @return Boolean: whether the user may subscribe to the NL.
 466      */
 467     public function maySubscribe($user = null)
 468     {
 469         return true;
 470     }
 471
 472     /** Whether a given user may edit this newsletter
 473      * @p $uid UID of the user whose perms should be checked (if null, use current user)
 474      * @return Boolean: whether the user may edit the NL
 475      */
 476     public function mayEdit($user = null)
 477     {
 478         if (is_null($user)) {
 479             $user = S::user();
 480         }
 481         if ($user->checkPerms('admin')) {
 482             return true;
 483         }
 484         $res = XDB::query('SELECT  perms
 485                              FROM  group_members
 486                             WHERE  asso_id = {?} AND uid = {?}',
 487                             $this->group_id, $user->id());
 488         return ($res->numRows() && $res->fetchOneCell() == 'admin');
 489     }
 490
 491     /** Whether a given user may submit articles to this newsletter using X.org validation system
 492      * @p $user User whose access should be checked (if null, use current user)
 493      * @return Boolean: whether the user may submit articles
 494      */
 495     public function maySubmit($user = null)
 496     {
 497         // Submission of new articles is only enabled for the X.org NL (and forbidden when viewing issues on X.net)
 498         return ($this->group == self::GROUP_XORG && !isset($GLOBALS['IS_XNET_SITE']));
 499     }
 500
 501     // }}}
 502     // {{{ Display-related functions: cssFile, tplFile, prefix, admin_prefix, admin_links_enabled, automatic_mailings_enabled
 503
 504     /** Get the name of the css file used to display this newsletter.
 505      */
 506     public function cssFile()
 507     {
 508         if ($this->custom_css) {
 509             $base = $this->group;
 510         } else {
 511             $base = self::FORMAT_DEFAULT_GROUP;
 512         }
 513         return 'nl.' . $base . '.css';
 514     }
 515
 516     /** Get the name of the template file used to display this newsletter.
 517      */
 518     public function tplFile()
 519     {
 520         if ($this->custom_css) {
 521             $base = $this->group;
 522         } else {
 523             $base = self::FORMAT_DEFAULT_GROUP;
 524         }
 525         return 'newsletter/nl.' . $base . '.mail.tpl';
 526     }
 527
 528     /** Get the prefix leading to the page for this NL
 529      * Only X.org / AX / X groups may be seen on X.org.
 530      */
 531     public function prefix($enforce_xnet=true, $with_group=true)
 532     {
 533         if (!empty($GLOBALS['IS_XNET_SITE'])) {
 534             if ($with_group) {
 535                 return $this->group . '/nl';
 536             } else {
 537                 return 'nl';
 538             }
 539         }
 540         switch ($this->group) {
 541         case self::GROUP_XORG:
 542             return 'nl';
 543         case self::GROUP_AX:
 544             return 'ax';
 545         case self::GROUP_EP:
 546             return 'epletter';
 547         default:
 548             // Don't display groups NLs on X.org
 549             assert(!$enforce_xnet);
 550         }
 551     }
 552
 553     /** Get the prefix to use for all 'admin' pages of this NL.
 554      */
 555     public function adminPrefix($enforce_xnet=true, $with_group=true)
 556     {
 557         if (!empty($GLOBALS['IS_XNET_SITE'])) {
 558             if ($with_group) {
 559                 return $this->group . '/admin/nl';
 560             } else {
 561                 return 'admin/nl';
 562             }
 563         }
 564         switch ($this->group) {
 565         case self::GROUP_XORG:
 566             return 'admin/newsletter';
 567         case self::GROUP_AX:
 568             return 'ax/admin';
 569         case self::GROUP_EP:
 570             return 'epletter/admin';
 571         default:
 572             // Don't display groups NLs on X.org
 573             assert(!$enforce_xnet);
 574         }
 575     }
 576
 577     /** Hack used to remove "admin" links on X.org page on X.net
 578      * The 'admin' links are enabled for all pages, except for X.org when accessing NL through X.net
 579      */
 580     public function adminLinksEnabled()
 581     {
 582         return ($this->group != self::GROUP_XORG || !isset($GLOBALS['IS_XNET_SITE']));
 583     }
 584
 585     /** Automatic mailings are disabled for X.org NL.
 586      */
 587     public function automaticMailingEnabled()
 588     {
 589         return $this->group != self::GROUP_XORG;
 590     }
 591
 592     public function hasCustomCss()
 593     {
 594         return $this->custom_css;
 595     }
 596
 597     public function canSyncWithGroup()
 598     {
 599         switch ($this->group) {
 600           case self::GROUP_XORG:
 601           case self::GROUP_AX:
 602           case self::GROUP_EP:
 603             return false;
 604           default:
 605             return true;
 606         }
 607     }
 608
 609     // }}}
 610 }
 611
 612 // }}}
 613
 614 // {{{ class NLIssue
 615
 616 // A NLIssue is an issue of a given NewsLetter
 617 class NLIssue
 618 {
 619     protected $nlid;  // Id of the newsletter
 620
 621     const STATE_NEW = 'new';  // New, currently being edited
 622     const STATE_PENDING = 'pending';  // Ready for mailing
 623     const STATE_SENT = 'sent';  // Sent
 624
 625     public $nl;  // Related NL
 626
 627     public $id;  // Id of this issue of the newsletter
 628     public $shortname;  // Shortname for this issue
 629     public $title;  // Title of this issue
 630     public $title_mail;  // Title of the email
 631     public $state;  // State of the issue (one of the STATE_ values)
 632     public $sufb;  // Environment to use to generate the UFC through an UserFilterBuilder
 633
 634     public $date;  // Date at which this issue was sent
 635     public $send_before;  // Date at which issue should be sent
 636     public $head;  // Foreword of the issue (or body for letters with no articles)
 637     public $signature;  // Signature of the letter
 638     public $reply_to;  // Adress to reply to the message (can be empty)
 639     public $arts = array();  // Articles of the issue
 640
 641     const BATCH_SIZE = 60;  // Number of emails to send every minute.
 642
 643     // {{{ Constructor, id-related functions
 644
 645     /** Build a NewsLetter.
 646      * @p $id: ID of the issue (unique among all newsletters)
 647      * @p $nl: Optional argument containing an already built NewsLetter object.
 648      */
 649     function __construct($id, $nl = null, $fetch_articles = true)
 650     {
 651         return $this->fetch($id, $nl, $fetch_articles);
 652     }
 653
 654     protected function refresh()
 655     {
 656         return $this->fetch($this->id, $this->nl, false);
 657     }
 658
 659     protected function fetch($id, $nl = null, $fetch_articles = true)
 660     {
 661         // Load this issue
 662         $res = XDB::query('SELECT  nlid, short_name, date, send_before, state, sufb_json,
 663                                    title, mail_title, head, signature, reply_to
 664                              FROM  newsletter_issues
 665                             WHERE  id = {?}',
 666                           $id);
 667         if (!$res->numRows()) {
 668             throw new MailNotFound();
 669         }
 670         $issue = $res->fetchOneAssoc();
 671         if ($nl && $nl->id == $issue['nlid']) {
 672             $this->nl = $nl;
 673         } else {
 674             $this->nl = new NewsLetter($issue['nlid']);
 675         }
 676         $this->id = $id;
 677         $this->nlid        = $issue['nlid'];
 678         $this->shortname   = $issue['short_name'];
 679         $this->date        = $issue['date'];
 680         $this->send_before = $issue['send_before'];
 681         $this->state       = $issue['state'];
 682         $this->title       = $issue['title'];
 683         $this->title_mail  = $issue['mail_title'];
 684         $this->head        = $issue['head'];
 685         $this->signature   = $issue['signature'];
 686         $this->reply_to    = $issue['reply_to'];
 687         $this->sufb        = $this->importJSonStoredUFB($issue['sufb_json']);
 688
 689         if ($fetch_articles) {
 690             $this->fetchArticles();
 691         }
 692     }
 693
 694     protected function fetchArticles($force = false)
 695     {
 696         if (count($this->arts) && !$force) {
 697             return;
 698         }
 699
 700         // Load the articles
 701         $res = XDB::iterRow(
 702             'SELECT  a.title, a.body, a.append, a.aid, a.cid, a.pos
 703                FROM  newsletter_art AS a
 704          INNER JOIN  newsletter_issues AS ni USING(id)
 705          LEFT  JOIN  newsletter_cat AS c ON (a.cid = c.cid)
 706               WHERE  a.id = {?}
 707            ORDER BY  c.pos, a.pos',
 708            $this->id);
 709         while (list($title, $body, $append, $aid, $cid, $pos) = $res->next()) {
 710             $this->arts[$cid][$aid] = new NLArticle($title, $body, $append, $aid, $cid, $pos);
 711         }
 712     }
 713
 714     protected function importJSonStoredUFB($json = null)
 715     {
 716         require_once 'ufbuilder.inc.php';
 717         $ufb = $this->nl->getSubscribersUFB();
 718         if (is_null($json)) {
 719             return new StoredUserFilterBuilder($ufb, new PFC_True());
 720         }
 721         $export = json_decode($json, true);
 722         if (is_null($export)) {
 723             PlErrorReport::report("Invalid json while reading NL {$this->nlid}, issue {$this->id}: failed to import '''{$json}'''.");
 724             return new StoredUserFilterBuilder($ufb, new PFC_True());
 725         }
 726         $sufb = new StoredUserFilterBuilder($ufb);
 727         $sufb->fillFromExport($export);
 728         return $sufb;
 729     }
 730
 731     protected function exportStoredUFBAsJSon()
 732     {
 733         return json_encode($this->sufb->export());
 734     }
 735
 736     public function id()
 737     {
 738         return is_null($this->shortname) ? $this->id : $this->shortname;
 739     }
 740
 741     protected function selectId($where)
 742     {
 743         $res = XDB::query("SELECT  IFNULL(ni.short_name, ni.id)
 744                              FROM  newsletter_issues AS ni
 745                             WHERE  ni.state != 'new' AND ni.nlid = {?} AND ${where}
 746                             LIMIT  1", $this->nl->id);
 747         if ($res->numRows() != 1) {
 748             return null;
 749         }
 750         return $res->fetchOneCell();
 751     }
 752
 753     /** Delete this issue
 754      * @return True if the issue could be deleted, false otherwise.
 755      * Related articles will be deleted through cascading FKs.
 756      * If this issue was the last issue for at least one subscriber, the deletion will be aborted.
 757      */
 758     public function delete()
 759     {
 760         if ($this->state == self::STATE_NEW) {
 761             $res = XDB::query('SELECT  COUNT(*)
 762                                  FROM  newsletter_ins
 763                                 WHERE  last = {?}', $this->id);
 764             if ($res->fetchOneCell() > 0) {
 765                 return false;
 766             }
 767
 768             return XDB::execute('DELETE FROM  newsletter_issues
 769                                        WHERE  id = {?}', $this->id);
 770         } else {
 771             return false;
 772         }
 773     }
 774
 775     /** Schedule a mailing of this NL
 776      * If the 'send_before' field was NULL, it is set to the current time.
 777      * @return Boolean Whether the date could be set (false if trying to schedule an already sent NL)
 778      */
 779     public function scheduleMailing()
 780     {
 781         if ($this->state == self::STATE_NEW) {
 782             $success = XDB::execute('UPDATE  newsletter_issues
 783                                         SET  state = \'pending\', send_before = IFNULL(send_before, NOW())
 784                                       WHERE  id = {?}',
 785                                       $this->id);
 786             if ($success) {
 787                 global $globals;
 788                 $mailer = new PlMailer('newsletter/notify_scheduled.mail.tpl');
 789                 $mailer->assign('issue', $this);
 790                 $mailer->assign('base', $globals->baseurl);
 791                 $mailer->send();
 792                 $this->refresh();
 793             }
 794             return $success;
 795         } else {
 796             return false;
 797         }
 798     }
 799
 800     /** Cancel the scheduled mailing of this NL
 801      * @return Boolean: whether the mailing could be cancelled.
 802      */
 803     public function cancelMailing()
 804     {
 805         if ($this->state == self::STATE_PENDING) {
 806             $success = XDB::execute('UPDATE  newsletter_issues
 807                                         SET  state = \'new\'
 808                                       WHERE  id = {?}', $this->id);
 809             if ($success) {
 810                 $this->refresh();
 811             }
 812             return $success;
 813         } else {
 814             return false;
 815         }
 816     }
 817
 818     /** Helper function for smarty templates: is this issue editable ?
 819      */
 820     public function isEditable()
 821     {
 822         return $this->state == self::STATE_NEW;
 823     }
 824
 825     /** Helper function for smarty templates: is the mailing of this issue scheduled ?
 826      */
 827     public function isPending()
 828     {
 829         return $this->state == self::STATE_PENDING;
 830     }
 831
 832     /** Helper function for smarty templates: has this issue been sent ?
 833      */
 834     public function isSent()
 835     {
 836         return $this->state == self::STATE_SENT;
 837     }
 838
 839     // }}}
 840     // {{{ Navigation
 841
 842     private $id_prev = null;
 843     private $id_next = null;
 844     private $id_last = null;
 845
 846     /** Retrieve ID of the previous issue
 847      * That value, once fetched, is cached in the private $id_prev variable.
 848      * @return ID of the previous issue.
 849      */
 850     public function prev()
 851     {
 852         if (is_null($this->id_prev)) {
 853             $this->id_prev = $this->selectId(XDB::format("ni.id < {?} ORDER BY ni.id DESC", $this->id));
 854         }
 855         return $this->id_prev;
 856     }
 857
 858     /** Retrieve ID of the following issue
 859      * That value, once fetched, is cached in the private $id_next variable.
 860      * @return ID of the following issue.
 861      */
 862     public function next()
 863     {
 864         if (is_null($this->id_next)) {
 865             $this->id_next = $this->selectId(XDB::format("ni.id > {?} ORDER BY ni.id", $this->id));
 866         }
 867         return $this->id_next;
 868     }
 869
 870     /** Retrieve ID of the last issue
 871      * That value, once fetched, is cached in the private $id_last variable.
 872      * @return ID of the last issue.
 873      */
 874     public function last()
 875     {
 876         if (is_null($this->id_last)) {
 877             try {
 878                 $this->id_last = $this->nl->getIssue('last')->id;
 879             } catch (MailNotFound $e) {
 880                 $this->id_last = null;
 881             }
 882         }
 883         return $this->id_last;
 884     }
 885
 886     // }}}
 887     // {{{ Edition, articles
 888
 889     const ERROR_INVALID_REPLY_TO = 'invalid_reply_to';
 890     const ERROR_INVALID_SHORTNAME = 'invalid_shortname';
 891     const ERROR_INVALID_UFC = 'invalid_ufc';
 892     const ERROR_TOO_LONG_UFC = 'too_long_ufc';
 893     const ERROR_SQL_SAVE = 'sql_error';
 894
 895     /** Save the global properties of this NL issue (title&co).
 896      */
 897     public function save()
 898     {
 899         $errors = array();
 900
 901         // Fill the list of fields to update
 902         $fields = array(
 903             'title' => $this->title,
 904             'mail_title' => $this->title_mail,
 905             'head' => $this->head,
 906             'signature' => $this->signature,
 907         );
 908
 909         if (!empty($this->reply_to) && !isvalid_email($this->reply_to)) {
 910             $errors[] = self::ERROR_INVALID_REPLY_TO ;
 911         } else {
 912             $fields['reply_to'] = $this->reply_to;
 913         }
 914
 915         if ($this->isEditable()) {
 916             $fields['date'] = $this->date;
 917             if (!preg_match('/^[-a-z0-9]+$/i', $this->shortname) || is_numeric($this->shortname)) {
 918                 $errors[] = self::ERROR_INVALID_SHORTNAME;
 919             } else {
 920                 $fields['short_name'] = $this->shortname;
 921             }
 922             if ($this->sufb->isValid() || $this->sufb->isEmpty()) {
 923                 $fields['sufb_json'] = json_encode($this->sufb->export()->dict());
 924                 // If sufb_json is too long to be store, we do not store a truncated json and notify the user.
 925                 // The limit is LONGTEXT's one, ie 2^32 = 4294967296.
 926                 if (strlen($fields['sufb_json']) > 4294967295) {
 927                     $errors[] = self::ERROR_TOO_LONG_UFC;
 928                 }
 929             } else {
 930                 $errors[] = self::ERROR_INVALID_UFC;
 931             }
 932
 933             if ($this->nl->automaticMailingEnabled()) {
 934                 $fields['send_before'] = ($this->send_before ? $this->send_before : null);
 935             }
 936         }
 937
 938         if (count($errors)) {
 939             return $errors;
 940         }
 941         $field_sets = array();
 942         foreach ($fields as $key => $value) {
 943             $field_sets[] = XDB::format($key . ' = {?}', $value);
 944         }
 945         XDB::execute('UPDATE  newsletter_issues
 946                          SET  ' . implode(', ', $field_sets) . '
 947                        WHERE  id={?}',
 948                        $this->id);
 949         if (XDB::affectedRows()) {
 950             $this->refresh();
 951         } else {
 952             $errors[] = self::ERROR_SQL_SAVE;
 953         }
 954         return $errors;
 955     }
 956
 957     /** Get an article by number
 958      * @p $aid Article ID (among articles of the issue)
 959      * @return A NLArticle object, or null if there is no article by that number
 960      */
 961     public function getArt($aid)
 962     {
 963         $this->fetchArticles();
 964
 965         foreach ($this->arts as $category => $artlist) {
 966             if (isset($artlist[$aid])) {
 967                 return $artlist[$aid];
 968             }
 969         }
 970         return null;
 971     }
 972
 973     /** Save an article
 974      * @p $a A reference to a NLArticle object (will be modified once saved)
 975      */
 976     public function saveArticle($a)
 977     {
 978         $this->fetchArticles();
 979
 980         // Prevent cid to be 0 (use NULL instead)
 981         $a->cid = ($a->cid == 0) ? null : $a->cid;
 982         if ($a->aid >= 0) {
 983             // Article already exists in DB
 984             XDB::execute('UPDATE  newsletter_art
 985                              SET  cid = {?}, pos = {?}, title = {?}, body = {?}, append = {?}
 986                            WHERE  id = {?} AND aid = {?}',
 987                          $a->cid, $a->pos, $a->title, $a->body, $a->append, $this->id, $a->aid);
 988         } else {
 989             // New article
 990             XDB::startTransaction();
 991             list($aid, $pos) = XDB::fetchOneRow('SELECT  MAX(aid) AS aid, MAX(pos) AS pos
 992                                                    FROM  newsletter_art AS a
 993                                                   WHERE  a.id = {?}',
 994                                                 $this->id);
 995             $a->aid = ++$aid;
 996             $a->pos = ($a->pos ? $a->pos : ++$pos);
 997             XDB::execute('INSERT INTO  newsletter_art (id, aid, cid, pos, title, body, append)
 998                                VALUES  ({?}, {?}, {?}, {?}, {?}, {?}, {?})',
 999                          $this->id, $a->aid, $a->cid, $a->pos,
1000                          $a->title, $a->body, $a->append);
1001             XDB::commit();
1002         }
1003         // Update local ID of article
1004         $this->arts[$a->aid] = $a;
1005     }
1006
1007     /** Delete an article by its ID
1008      * @p $aid ID of the article to delete
1009      */
1010     public function delArticle($aid)
1011     {
1012         $this->fetchArticles();
1013
1014         XDB::execute('DELETE FROM newsletter_art WHERE id={?} AND aid={?}', $this->id, $aid);
1015         foreach ($this->arts as $key=>$art) {
1016             unset($this->arts[$key][$aid]);
1017         }
1018     }
1019
1020     // }}}
1021     // {{{ Display
1022
1023     /** Retrieve the title of this issue
1024      * @p $mail Whether we want the normal title or the email subject
1025      * @return Title of the issue
1026      */
1027     public function title($mail = false)
1028     {
1029         return $mail ? $this->title_mail : $this->title;
1030     }
1031
1032     /** Retrieve the head of this issue
1033      * @p $user User for <dear> customization (may be null: no customization)
1034      * @p $type Either 'text' or 'html'
1035      * @return Formatted head of the issue.
1036      */
1037     public function head($user = null, $type = 'text')
1038     {
1039         if (is_null($user)) {
1040             return $this->head;
1041         } else {
1042             $head = $this->head;
1043             $head = str_replace(array('<cher>', '<prenom>', '<nom>'),
1044                                 array(($user->isFemale() ? 'Chère' : 'Cher'), $user->displayName(), ''),
1045                                 $head);
1046             return format_text($head, $type, 2, 64);
1047         }
1048     }
1049
1050     /** Retrieve the formatted signature of this issue.
1051      */
1052     public function signature($type = 'text')
1053     {
1054         return format_text($this->signature, $type, 2, 64);
1055     }
1056
1057     /** Get the title of a given category
1058      * @p $cid ID of the category to retrieve
1059      * @return Name of the category
1060      */
1061     public function category($cid)
1062     {
1063         return $this->nl->cats[$cid];
1064     }
1065
1066     /** Add required data to the given $page for proper CSS display
1067      * @p $page Smarty object
1068      * @return Either 'true' (if CSS was added to a page) or the raw CSS to add (when $page is null)
1069      */
1070     public function css($page = null)
1071     {
1072         if (!is_null($page)) {
1073             $page->addCssLink($this->nl->cssFile());
1074             return true;
1075         } else {
1076             $css = file_get_contents(dirname(__FILE__) . '/../htdocs/css/' . $this->nl->cssFile());
1077             return preg_replace('@/\*.*?\*/@us', '', $css);
1078         }
1079     }
1080
1081     /** Set up a smarty page for a 'text' mode render of the issue
1082      * @p $page Smarty object (using the $this->nl->tplFile() template)
1083      * @p $user User to use when rendering the template
1084      */
1085     public function toText($page, $user)
1086     {
1087         $this->fetchArticles();
1088
1089         $this->css($page);
1090         $page->assign('prefix', null);
1091         $page->assign('is_mail', false);
1092         $page->assign('mail_part', 'text');
1093         $page->assign('user', $user);
1094         $page->assign('hash', null);
1095         $this->assignData($page);
1096     }
1097
1098     /** Set up a smarty page for a 'html' mode render of the issue
1099      * @p $page Smarty object (using the $this->nl->tplFile() template)
1100      * @p $user User to use when rendering the template
1101      */
1102     public function toHtml($page, $user)
1103     {
1104         $this->fetchArticles();
1105
1106         $this->css($page);
1107         $page->assign('prefix', $this->nl->prefix() . '/show/' . $this->id());
1108         $page->assign('is_mail', false);
1109         $page->assign('mail_part', 'html');
1110         $page->assign('user', $user);
1111         $page->assign('hash', null);
1112         $this->assignData($page);
1113     }
1114
1115     /** Set all 'common' data for the page (those which are required for both web and email rendering)
1116      * @p $smarty Smarty object (e.g page) which should be filled
1117      */
1118     protected function assignData($smarty)
1119     {
1120         $this->fetchArticles();
1121
1122         $smarty->assign_by_ref('issue', $this);
1123         $smarty->assign_by_ref('nl', $this->nl);
1124     }
1125
1126     // }}}
1127     // {{{ Mailing
1128
1129     /** Check whether this issue is empty
1130      * An issue is empty if the email has no title (or the default one), or no articles and an empty head.
1131      */
1132     public function isEmpty()
1133     {
1134         return $this->title_mail == '' || $this->title_mail == 'to be continued' || (count($this->arts) == 0 && strlen($this->head) == 0);
1135     }
1136
1137     /** Retrieve the 'Send before' date, in a clean format.
1138      */
1139     public function getSendBeforeDate()
1140     {
1141         return strftime('%Y-%m-%d', strtotime($this->send_before));
1142     }
1143
1144     /** Retrieve the 'Send before' time (i.e hour), in a clean format.
1145      */
1146     public function getSendBeforeTime()
1147     {
1148         return strtotime($this->send_before);
1149     }
1150
1151     /** Create a hash based on some additional data
1152      * $line Line-specific data (to prevent two hashes generated at the same time to be the same)
1153      */
1154     protected static function createHash($line)
1155     {
1156         $hash = implode(time(), $line) . rand();
1157         $hash = md5($hash);
1158         return $hash;
1159     }
1160
1161     /** Send this issue to the given user, reusing an existing hash if provided.
1162      * @p $user User to whom the issue should be mailed
1163      * @p $hash Optional hash to use in the 'unsubscribe' link; if null, another one will be generated.
1164      */
1165     public function sendTo($user, $hash = null)
1166     {
1167         $this->fetchArticles();
1168
1169         if (is_null($hash)) {
1170             $hash = XDB::fetchOneCell("SELECT  hash
1171                                          FROM  newsletter_ins
1172                                         WHERE  uid = {?} AND nlid = {?}",
1173                                       $user->id(), $this->nl->id);
1174         }
1175         if (is_null($hash)) {
1176             $hash = self::createHash(array($user->displayName(), $user->fullName(),
1177                                        $user->isFemale(), $user->isEmailFormatHtml(),
1178                                        rand(), "X.org rulez"));
1179             XDB::execute("UPDATE  newsletter_ins as ni
1180                              SET  ni.hash = {?}
1181                            WHERE  ni.uid = {?} AND ni.nlid = {?}",
1182                          $hash, $user->id(), $this->nl->id);
1183         }
1184
1185         $mailer = new PlMailer($this->nl->tplFile());
1186         $this->assignData($mailer);
1187         $mailer->assign('is_mail', true);
1188         $mailer->assign('user', $user);
1189         $mailer->assign('prefix',  null);
1190         $mailer->assign('hash',    $hash);
1191         if (!empty($this->reply_to)) {
1192             $mailer->addHeader('Reply-To', $this->reply_to);
1193         }
1194         $mailer->sendTo($user);
1195     }
1196
1197     /** Select a subset of subscribers which should receive the newsletter.
1198      * NL-Specific selections (not yet received, is subscribed) are done when sending.
1199      * @return A PlFilterCondition.
1200      */
1201     protected function getRecipientsUFC()
1202     {
1203         return $this->sufb->getUFC();
1204     }
1205
1206     /** Check whether a given user may see this issue.
1207      * @p $user User whose access should be checked
1208      * @return Whether he may access the issue
1209      */
1210     public function checkUser($user = null)
1211     {
1212         if ($user == null) {
1213             $user = S::user();
1214         }
1215         $uf = new UserFilter($this->getRecipientsUFC());
1216         return $uf->checkUser($user);
1217     }
1218
1219     /** Sent this issue to all valid recipients
1220      * @return Number of issues sent
1221      */
1222     public function sendToAll()
1223     {
1224         $this->fetchArticles();
1225
1226         XDB::execute('UPDATE  newsletter_issues
1227                          SET  state = \'sent\', date=CURDATE()
1228                        WHERE  id = {?}',
1229                        $this->id);
1230
1231         $ufc = new PFC_And($this->getRecipientsUFC(), new UFC_NLSubscribed($this->nl->id, $this->id), new UFC_HasValidEmail());
1232         $uf = new UserFilter($ufc, array(new UFO_IsAdmin(true), new UFO_Uid()));
1233         $limit = new PlLimit(self::BATCH_SIZE);
1234         $global_sent = array();
1235
1236         while (true) {
1237             $sent = array();
1238             $users = $uf->getUsers($limit);
1239             if (count($users) == 0) {
1240                 break;
1241             }
1242             foreach ($users as $user) {
1243                 if (array_key_exists($user->id(), $global_sent)) {
1244                     Platal::page()->kill('Sending the same newsletter issue ' . $this->id . ' to user ' . $user->id() . ' twice, something must be wrong.');
1245                 }
1246                 $sent[] = $user->id();
1247                 $global_sent[$user->id()] = true;
1248                 $this->sendTo($user, $hash);
1249             }
1250             XDB::execute("UPDATE  newsletter_ins
1251                              SET  last = {?}
1252                            WHERE  nlid = {?} AND uid IN {?}", $this->id, $this->nl->id, $sent);
1253
1254             sleep(60);
1255         }
1256         return count($global_sent);
1257     }
1258
1259     // }}}
1260 }
1261
1262 // }}}
1263 // {{{ class NLArticle
1264
1265 class NLArticle
1266 {
1267     // Maximum number of lines per article
1268     const MAX_LINES_PER_ARTICLE = 8;
1269     const MAX_CHARACTERS_PER_LINE = 68;
1270
1271     // {{{ properties
1272
1273     public $aid;
1274     public $cid;
1275     public $pos;
1276     public $title;
1277     public $body;
1278     public $append;
1279
1280     // }}}
1281     // {{{ constructor
1282
1283     function __construct($title='', $body='', $append='', $aid=-1, $cid=0, $pos=0)
1284     {
1285         $this->body   = $body;
1286         $this->title  = $title;
1287         $this->append = $append;
1288         $this->aid    = $aid;
1289         $this->cid    = $cid;
1290         $this->pos    = $pos;
1291     }
1292
1293     // }}}
1294     // {{{ function title()
1295
1296     public function title()
1297     { return trim($this->title); }
1298
1299     // }}}
1300     // {{{ function body()
1301
1302     public function body()
1303     { return trim($this->body); }
1304
1305     // }}}
1306     // {{{ function append()
1307
1308     public function append()
1309     { return trim($this->append); }
1310
1311     // }}}
1312     // {{{ function toText()
1313
1314     public function toText($hash = null, $login = null)
1315     {
1316         $title = '*'.$this->title().'*';
1317         $body = MiniWiki::WikiToText($this->body, true);
1318         $app = MiniWiki::WikiToText($this->append, false, 4);
1319         $text = trim("$title\n\n$body\n\n$app")."\n";
1320         if (!is_null($hash) && !is_null($login)) {
1321             $text = str_replace('%HASH%', "$hash/$login", $text);
1322         } else {
1323             $text = str_replace('%HASH%', '', $text);
1324         }
1325         return $text;
1326     }
1327
1328     // }}}
1329     // {{{ function toHtml()
1330
1331     public function toHtml($hash = null, $login = null)
1332     {
1333         $title = "<h2 class='xorg_nl'><a id='art{$this->aid}'></a>".pl_entities($this->title()).'</h2>';
1334         $body  = MiniWiki::WikiToHTML($this->body);
1335         $app   = MiniWiki::WikiToHTML($this->append);
1336
1337         $art   = "$title\n";
1338         $art  .= "<div class='art'>\n$body\n";
1339         if ($app) {
1340             $art .= "<div class='app'>$app</div>";
1341         }
1342         $art  .= "</div>\n";
1343         if (!is_null($hash) && !is_null($login)) {
1344             $art = str_replace('%HASH%', "$hash/$login", $art);
1345         } else {
1346             $art = str_replace('%HASH%', '', $art);
1347         }
1348
1349         return $art;
1350     }
1351
1352     // }}}
1353     // {{{ function check()
1354
1355     public function check()
1356     {
1357         $rest = $this->remain();
1358
1359         return $rest['remaining_lines'] >= 0;
1360     }
1361
1362     // }}}
1363     // {{{ function remain()
1364
1365     public function remain()
1366     {
1367         $text  = MiniWiki::WikiToText($this->body);
1368         $array = explode("\n", wordwrap($text, self::MAX_CHARACTERS_PER_LINE));
1369         $lines_count = 0;
1370         foreach ($array as $line) {
1371             if (trim($line) != '') {
1372                 ++$lines_count;
1373             }
1374         }
1375
1376         return array(
1377             'remaining_lines'                    => self::MAX_LINES_PER_ARTICLE - $lines_count,
1378             'remaining_characters_for_last_line' => self::MAX_CHARACTERS_PER_LINE - strlen($array[count($array) - 1])
1379        );
1380     }
1381     // }}}
1382     // {{{ function parseUrlsFromArticle()
1383
1384     protected function parseUrlsFromArticle()
1385     {
1386         $email_regex = '([a-z0-9.\-+_\$]+@([\-.+_]?[a-z0-9])+)';
1387         $url_regex = '((https?|ftp)://[a-zA-Z0-9._%#+/?=&~-]+)';
1388         $regex = '{' . $email_regex . '|' . $url_regex . '}i';
1389
1390         $matches = array();
1391         $body_matches = array();
1392         if (preg_match_all($regex, $this->body(), $body_matches)) {
1393             $matches = array_merge($matches, $body_matches[0]);
1394         }
1395
1396         $append_matches = array();
1397         if (preg_match_all($regex, $this->append(), $append_matches)) {
1398             $matches = array_merge($matches, $append_matches[0]);
1399         }
1400
1401         return $matches;
1402     }
1403
1404     // }}}
1405     // {{{ function getLinkIps()
1406
1407     public function getLinkIps(&$blacklist_host_resolution_count)
1408     {
1409         $matches = $this->parseUrlsFromArticle();
1410         $article_ips = array();
1411
1412         if (!empty($matches)) {
1413             global $globals;
1414
1415             foreach ($matches as $match) {
1416                 $host = parse_url($match, PHP_URL_HOST);
1417                 if ($host == '') {
1418                     list(, $host) = explode('@', $match);
1419                 }
1420
1421                 if ($blacklist_host_resolution_count >= $globals->mail->blacklist_host_resolution_limit) {
1422                    break;
1423                 }
1424
1425                 if (!preg_match('/^(' . str_replace(' ', '|', $globals->mail->domain_whitelist) . ')$/i', $host)) {
1426                     $article_ips = array_merge($article_ips, array(gethostbyname($host) => $host));
1427                     ++$blacklist_host_resolution_count;
1428                 }
1429             }
1430         }
1431
1432         return $article_ips;
1433     }
1434
1435     // }}}
1436 }
1437
1438 // }}}
1439
1440 // {{{ Functions
1441
1442 function format_text($input, $format, $indent = 0, $width = 68)
1443 {
1444     if ($format == 'text') {
1445         return MiniWiki::WikiToText($input, true, $indent, $width, "title");
1446     }
1447     return MiniWiki::WikiToHTML($input, "title");
1448 }
1449
1450 // function enriched_to_text($input,$html=false,$just=false,$indent=0,$width=68)
1451
1452 // }}}
1453
1454 // vim:set et sw=4 sts=4 sws=4 enc=utf-8:
1455 ?>