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