PHP Surfer::is_logged方法代码示例

 /**
  * list users
  *
  * @param resource the SQL result
  * @return array of ($nick_name => $more)
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // we return an array of ($nick_name => $more)
     $items = array();
     // empty list
     if (!SQL::count($result)) {
         return $items;
     }
     // process all items in the list
     while ($item = SQL::fetch($result)) {
         // unique identifier
         $key = $item['nick_name'];
         // use the full name, if nick name is not part of it
         $more = '';
         if ($item['full_name'] && !preg_match('/\\b' . preg_quote($item['nick_name'], '/') . '\\b/', $item['full_name'])) {
             $more = ucfirst($item['full_name']) . ' ';
         }
         // else use e-mail address, if any --but only to authenticated surfer
         if ($item['email'] && Surfer::is_logged()) {
             if ($more) {
                 $more .= '<' . $item['email'] . '>';
             } else {
                 $more .= $item['email'];
             }
         } elseif ($item['introduction']) {
             $more .= $item['introduction'];
         }
         // record this item
         $items[$key] = $more;
     }
     // end of processing
     SQL::free($result);
     return $items;
 }

 /**
  * extend the page menu
  *
  * @param string script name
  * @param string target anchor, if any
  * @param array current menu
  * @return array updated menu
  */
 function add_commands($script, $anchor, $menu = array())
 {
     global $context;
     // limit the scope of our check to viewed pages
     if (!preg_match('/articles\\/view/', $script)) {
         return $menu;
     }
     // surfer has to be authenticated
     if (!Surfer::is_logged()) {
         return $menu;
     }
     // sanity checks
     if (!$anchor) {
         Logger::error(i18n::s('No anchor has been found.'));
     } elseif (!($target = Anchors::get($anchor))) {
         Logger::error(i18n::s('No anchor has been found.'));
     } elseif (!$this->parameters) {
         Logger::error(sprintf(i18n::s('No parameter has been provided to %s'), 'behaviors/move_on_article_access'));
     } else {
         // look at parent container if possible
         if (!($origin = Anchors::get($target->get_parent()))) {
             $origin = $target;
         }
         // only container editors can proceed
         if ($origin->is_assigned() || Surfer::is_associate()) {
             // load target section
             $tokens = explode(' ', $this->parameters, 2);
             if ($section = Anchors::get('section:' . $tokens[0])) {
                 // make a label
                 if (count($tokens) < 2) {
                     $tokens[1] = sprintf(i18n::s('Move to %s'), $section->get_title());
                 }
                 // the target link to move the page
                 $link = Articles::get_url(str_replace('article:', '', $anchor), 'move', str_replace('section:', '', $section->get_reference()));
                 // make a sub-menu
                 $menu = array_merge(array($link => array('', $tokens[1], '', 'button')), $menu);
             }
         }
     }
     return $menu;
 }

 /**
  * list articles for manual review
  *
  * @param resource the SQL result
  * @return string the rendered text
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // we return an array of ($url => $attributes)
     $items = array();
     // empty list
     if (!SQL::count($result)) {
         return $items;
     }
     // process all items in the list
     include_once $context['path_to_root'] . 'comments/comments.php';
     include_once $context['path_to_root'] . 'links/links.php';
     while ($item = SQL::fetch($result)) {
         // get the related overlay, if any
         $overlay = Overlay::load($item, 'article:' . $item['id']);
         // get the anchor
         $anchor = Anchors::get($item['anchor']);
         // the url to view this item
         $url = Articles::get_permalink($item);
         // use the title to label the link
         if (is_object($overlay)) {
             $title = Codes::beautify_title($overlay->get_text('title', $item));
         } else {
             $title = Codes::beautify_title($item['title']);
         }
         // initialize variables
         $prefix = $suffix = '';
         // flag sticky pages
         if ($item['rank'] < 10000) {
             $prefix .= STICKY_FLAG;
         }
         // signal locked articles
         if (isset($item['locked']) && $item['locked'] == 'Y' && Articles::is_owned($item, $anchor)) {
             $suffix .= ' ' . LOCKED_FLAG;
         }
         // flag articles that are dead, or created or updated very recently
         if ($item['expiry_date'] > NULL_DATE && $item['expiry_date'] <= $context['now']) {
             $prefix .= EXPIRED_FLAG;
         } elseif ($item['create_date'] >= $context['fresh']) {
             $suffix .= ' ' . NEW_FLAG;
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix .= ' ' . UPDATED_FLAG;
         }
         // signal articles to be published
         if ($item['publish_date'] <= NULL_DATE || $item['publish_date'] > gmstrftime('%Y-%m-%d %H:%M:%S')) {
             $prefix .= DRAFT_FLAG;
         }
         // signal restricted and private articles
         if ($item['active'] == 'N') {
             $prefix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $prefix .= RESTRICTED_FLAG;
         }
         // details
         $details = array();
         // the author(s)
         if ($item['create_name'] != $item['edit_name']) {
             $details[] = sprintf(i18n::s('by %s, %s'), $item['create_name'], $item['edit_name']);
         } else {
             $details[] = sprintf(i18n::s('by %s'), $item['create_name']);
         }
         // the last action
         $details[] = Anchors::get_action_label($item['edit_action']) . ' ' . Skin::build_date($item['edit_date']);
         // the number of hits
         if (Surfer::is_logged() && $item['hits'] > 1) {
             $details[] = Skin::build_number($item['hits'], i18n::s('hits'));
         }
         // info on related files
         if ($count = Files::count_for_anchor('article:' . $item['id'], TRUE)) {
             $details[] = sprintf(i18n::ns('%d file', '%d files', $count), $count);
         }
         // info on related links
         if ($count = Links::count_for_anchor('article:' . $item['id'], TRUE)) {
             $details[] = sprintf(i18n::ns('%d link', '%d links', $count), $count);
         }
         // info on related comments
         if ($count = Comments::count_for_anchor('article:' . $item['id'], TRUE)) {
             $details[] = sprintf(i18n::ns('%d comment', '%d comments', $count), $count);
         }
         // append details to the suffix
         $suffix .= ' -&nbsp;<span class="details">' . ucfirst(trim(implode(', ', $details))) . '</span>';
         // commands to review the article
         $menu = array();
         // read the page
         $menu = array_merge($menu, array($url => i18n::s('Read')));
         // validate the page
         $menu = array_merge($menu, array('articles/stamp.php?id=' . $item['id'] . '&amp;confirm=review' => i18n::s('Validate')));
         // add a menu
         $suffix .= ' ' . Skin::build_list($menu, 'menu');
         // list all components for this item
         $items[$url] = array($prefix, $title, $suffix, 'basic', NULL);
     }
//.........这里部分代码省略.........

 /**
  * check if trackback is allowed
  *
  * This function returns TRUE either if the surfer has been authenticated,
  * or if the site is visible from the Internet.
  *
  * @return boolean TRUE or FALSE
  */
 public static function allow_trackback()
 {
     global $context;
     // site is visible from the Internet
     if (!isset($context['without_internet_visibility']) || $context['without_internet_visibility'] != 'Y') {
         return TRUE;
     }
     // surfer has been authenticated, provide trackback shortcut
     if (Surfer::is_logged()) {
         return TRUE;
     }
 }

 /**
  * list articles for search requests
  *
  * @param resource the SQL result
  * @return array of resulting items ($score, $summary), or NULL
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // we return an array of array($score, $summary)
     $items = array();
     // empty list
     if (!SQL::count($result)) {
         return $items;
     }
     // process all items in the list
     include_once $context['path_to_root'] . 'comments/comments.php';
     include_once $context['path_to_root'] . 'links/links.php';
     while ($item = SQL::fetch($result)) {
         // one box at a time
         $box = '';
         // get the related overlay, if any
         $overlay = Overlay::load($item, 'article:' . $item['id']);
         // get the main anchor
         $anchor = Anchors::get($item['anchor']);
         // the url to view this item
         $url = Articles::get_permalink($item);
         // use the title to label the link
         if (is_object($overlay)) {
             $title = Codes::beautify_title($overlay->get_text('title', $item));
         } else {
             $title = Codes::beautify_title($item['title']);
         }
         // initialize variables
         $prefix = $suffix = $icon = '';
         // flag sticky pages
         if ($item['rank'] < 10000) {
             $prefix .= STICKY_FLAG;
         }
         // signal locked articles
         if (isset($item['locked']) && $item['locked'] == 'Y' && Articles::is_owned($item, $anchor)) {
             $suffix .= ' ' . LOCKED_FLAG;
         }
         // flag articles that are dead, or created or updated very recently
         if ($item['expiry_date'] > NULL_DATE && $item['expiry_date'] <= $context['now']) {
             $prefix .= EXPIRED_FLAG;
         } elseif ($item['create_date'] >= $context['fresh']) {
             $suffix .= ' ' . NEW_FLAG;
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix .= ' ' . UPDATED_FLAG;
         }
         // signal articles to be published
         if ($item['publish_date'] <= NULL_DATE || $item['publish_date'] > gmstrftime('%Y-%m-%d %H:%M:%S')) {
             $prefix .= DRAFT_FLAG;
         }
         // signal restricted and private articles
         if ($item['active'] == 'N') {
             $prefix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $prefix .= RESTRICTED_FLAG;
         }
         // introduction
         $introduction = '';
         if (is_object($overlay)) {
             $introduction = $overlay->get_text('introduction', $item);
         } else {
             $introduction = $item['introduction'];
         }
         // the introductory text
         if ($introduction) {
             $suffix .= ' -&nbsp;' . Codes::beautify_introduction($introduction);
             // link to description, if any
             if ($item['description']) {
                 $suffix .= ' ' . Skin::build_link($url, MORE_IMG, 'more', i18n::s('View the page')) . ' ';
             }
         }
         // insert overlay data, if any
         if (is_object($overlay)) {
             $suffix .= $overlay->get_text('list', $item);
         }
         // details
         $details = array();
         // the author
         if ($item['create_name'] != $item['edit_name']) {
             $details[] = sprintf(i18n::s('by %s, %s'), Users::get_link($item['create_name'], $item['create_address'], $item['create_id']), Users::get_link($item['edit_name'], $item['edit_address'], $item['edit_id']));
         } else {
             $details[] = sprintf(i18n::s('by %s'), Users::get_link($item['create_name'], $item['create_address'], $item['create_id']));
         }
         // the last action
         $details[] = Anchors::get_action_label($item['edit_action']) . ' ' . Skin::build_date($item['edit_date']);
         // the number of hits
         if (Surfer::is_logged() && $item['hits'] > 1) {
             $details[] = Skin::build_number($item['hits'], i18n::s('hits'));
         }
         // info on related files
         if ($count = Files::count_for_anchor('article:' . $item['id'])) {
             $details[] = sprintf(i18n::ns('%d file', '%d files', $count), $count);
         }
//.........这里部分代码省略.........

 $_REQUEST['create_name'] = $_REQUEST['edit_name'];
 if (!$_REQUEST['create_name']) {
     $_REQUEST['create_name'] = $_REQUEST['create_address'];
 }
 if (!$_REQUEST['create_name']) {
     $_REQUEST['create_name'] =& i18n::c('(anonymous)');
 }
 // always auto-publish queries
 $_REQUEST['publish_date'] = gmstrftime('%Y-%m-%d %H:%M:%S');
 if (isset($_REQUEST['edit_id'])) {
     $_REQUEST['publish_id'] = $_REQUEST['edit_id'];
 }
 $_REQUEST['publish_address'] = $_REQUEST['edit_address'];
 $_REQUEST['publish_name'] = $_REQUEST['edit_name'];
 // show e-mail address of anonymous surfer
 if ($_REQUEST['edit_address'] && !Surfer::is_logged()) {
     $_REQUEST['description'] = '<p>' . sprintf(i18n::c('Sent by %s'), '[email=' . ($_REQUEST['edit_name'] ? $_REQUEST['edit_name'] : i18n::c('e-mail')) . ']' . $_REQUEST['edit_address'] . '[/email]') . "</p>\n" . $_REQUEST['description'];
 }
 // stop robots
 if (Surfer::may_be_a_robot()) {
     Logger::error(i18n::s('Please prove you are not a robot.'));
     $with_form = TRUE;
     // display the form on error
 } elseif (!($_REQUEST['id'] = Articles::post($_REQUEST))) {
     $with_form = TRUE;
     // post-processing
 } else {
     // do whatever is necessary on page publication
     Articles::finalize_publication($anchor, $_REQUEST);
     // message to the query poster
     $context['page_title'] = i18n::s('Your query has been registered');

include_once '../shared/global.php';
// users are assigned to this anchor, passed as member
$anchor = NULL;
if (isset($_REQUEST['member'])) {
    $anchor = Anchors::get($_REQUEST['member']);
} elseif (isset($_REQUEST['anchor'])) {
    $anchor = Anchors::get($_REQUEST['anchor']);
}
// only looking at watchers
if (isset($_REQUEST['anchor']) && !isset($_REQUEST['action'])) {
    $permitted = 'watchers';
} elseif (Surfer::is_associate()) {
    $permitted = 'all';
} elseif (is_object($anchor) && Surfer::get_id() && $anchor->get_reference() == 'user:' . Surfer::get_id()) {
    $permitted = 'all';
} elseif (Surfer::is_logged() && is_object($anchor) && $anchor->is_owned()) {
    $permitted = 'all';
} elseif (is_object($anchor) && $anchor->is_viewable()) {
    $permitted = 'editors';
} else {
    $permitted = FALSE;
}
// load the skin, maybe with a variant
load_skin('users', $anchor);
// the path to this page
if (is_object($anchor) && $anchor->is_viewable()) {
    $context['path_bar'] = $anchor->get_path_bar();
} else {
    $context['path_bar'] = array('users/' => i18n::s('People'));
}
// an anchor is mandatory

 /**
  * get some statistics for some sections
  *
  * Only sections matching following criteria are returned:
  * - section is visible (active='Y')
  * - section is restricted (active='R'), but surfer is a logged user
  * - section is hidden (active='N'), but surfer is an associate
  *
  * Non-activated and expired sections are counted as well.
  *
  * @param string the selected anchor (e.g., 'section:12')
  * @return array the resulting ($count, $min_date, $max_date) array
  *
  * @see sections/delete.php
  * @see sections/index.php
  * @see sections/layout_sections.php
  * @see sections/layout_sections_as_yahoo.php
  * @see sections/view.php
  */
 public static function stat_for_anchor($anchor = '')
 {
     global $context;
     // limit the query to one level
     if ($anchor) {
         $where = "(sections.anchor LIKE '" . SQL::escape($anchor) . "')";
     } else {
         $where = "(sections.anchor='' OR sections.anchor is NULL)";
     }
     // show everything if we are about to suppress a section
     if (!preg_match('/delete\\.php/', $context['script_url'])) {
         // display active and restricted items
         $where .= "AND (sections.active='Y'";
         // list restricted sections to authenticated surfers
         if (Surfer::is_logged()) {
             $where .= " OR sections.active='R'";
         }
         // list hidden sections to associates, editors and readers
         if (Surfer::is_empowered('S')) {
             $where .= " OR sections.active='N'";
         }
         $where .= ")";
         // hide sections removed from index maps
         $where .= " AND (sections.index_map = 'Y')";
         // non-associates will have only live sections
         if ($anchor && !Surfer::is_empowered()) {
             $where .= " AND ((sections.activation_date is NULL)" . "\tOR (sections.activation_date <= '" . $context['now'] . "'))" . " AND ((sections.expiry_date is NULL)" . "\tOR (sections.expiry_date <= '" . NULL_DATE . "') OR (sections.expiry_date > '" . $context['now'] . "'))";
         }
     }
     // list sections
     $query = "SELECT COUNT(*) as count, MIN(edit_date) as oldest_date, MAX(edit_date) as newest_date" . " FROM " . SQL::table_name('sections') . " AS sections" . " WHERE " . $where;
     $output = SQL::query_first($query);
     return $output;
 }

 /**
  * list files
  *
  * @param resource the SQL result
  * @return array of resulting items, or NULL
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // we return an array of ($url => $attributes)
     $items = array();
     // empty list
     if (!SQL::count($result)) {
         return $items;
     }
     // sanity check
     if (!isset($this->layout_variant)) {
         $this->layout_variant = '';
     }
     // process all items in the list
     while ($item = SQL::fetch($result)) {
         // get the main anchor
         $anchor = Anchors::get($item['anchor']);
         // initialize variables
         $prefix = $suffix = $icon = '';
         // more details
         $url = Files::get_permalink($item);
         // codes
         $codes = array();
         // files that can be embedded
         if (preg_match('/\\.(3gp|flv|gan|m4v|mm|mov|mp4|swf)$/i', $item['file_name'])) {
             $codes[] = '[embed=' . $item['id'] . ']';
         }
         // link for direct download
         $codes[] = '[file=' . $item['id'] . ']';
         $codes[] = '[download=' . $item['id'] . ']';
         // integrate codes
         if (!isset($_SESSION['surfer_editor']) || $_SESSION['surfer_editor'] == 'yacs') {
             foreach ($codes as $code) {
                 $suffix .= '<a onclick="edit_insert(\'\', \' ' . $code . '\');return false;" title="insert" tabindex="2000">' . $code . '</a> ';
             }
         } else {
             $suffix .= join(' ', $codes);
         }
         $suffix .= BR . '<span class="details">';
         // signal restricted and private files
         if ($item['active'] == 'N') {
             $suffix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $suffix .= RESTRICTED_FLAG;
         }
         // file title or file name
         $label = Codes::beautify_title($item['title']);
         if (!$label) {
             $label = ucfirst(str_replace(array('%20', '-', '_'), ' ', $item['file_name']));
         }
         $suffix .= $label;
         // flag files uploaded recently
         if ($item['create_date'] >= $context['fresh']) {
             $suffix .= NEW_FLAG;
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix .= UPDATED_FLAG;
         }
         $suffix .= '</span>';
         // details
         $details = array();
         if (Surfer::is_logged() && $item['edit_name']) {
             $details[] = sprintf(i18n::s('edited by %s %s'), Users::get_link($item['edit_name'], $item['edit_address'], $item['edit_id']), Skin::build_date($item['edit_date']));
         }
         // the menu bar for associates and poster
         if (Surfer::is_empowered()) {
             $details[] = Skin::build_link($url, i18n::s('details'), 'basic');
             $details[] = Skin::build_link(Files::get_url($item['id'], 'edit'), i18n::s('edit'), 'basic');
             $details[] = Skin::build_link(Files::get_url($item['id'], 'delete'), i18n::s('delete'), 'basic');
         }
         // append details
         if (count($details)) {
             $suffix .= BR . Skin::finalize_list($details, 'menu');
         }
         // explicit icon
         if ($item['thumbnail_url']) {
             $icon = $item['thumbnail_url'];
         } else {
             $icon = $context['url_to_root'] . Files::get_icon_url($item['file_name']);
         }
         // list all components for this item
         $items[$url] = array($prefix, '_', $suffix, 'file', $icon);
     }
     // end of processing
     SQL::free($result);
     return $items;
 }

 /**
  * list tables
  *
  * Recognize following variants:
  * - 'no_anchor' to list items attached to one particular anchor
  *
  * @param resource the SQL result
  * @return array one item per image
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // we return an array of ($url => $attributes)
     $items = array();
     // empty list
     if (!SQL::count($result)) {
         return $items;
     }
     if (!isset($this->layout_variant)) {
         $this->layout_variant = 'no_anchor';
     }
     // process all items in the list
     while ($item = SQL::fetch($result)) {
         // get the main anchor
         $anchor = Anchors::get($item['anchor']);
         // initialize variables
         $prefix = $suffix = $icon = '';
         // the url to view this item
         $url = Tables::get_url($item['id']);
         // codes to embed this image
         if ($anchor && $this->focus == $anchor->get_reference()) {
             // codes
             $codes = array();
             $codes[] = '[table=' . $item['id'] . ']';
             $codes[] = '[table.filter=' . $item['id'] . ']';
             $codes[] = '[table.chart=' . $item['id'] . ']';
             $codes[] = '[table.bars=' . $item['id'] . ']';
             $codes[] = '[table.line=' . $item['id'] . ']';
             // integrate codes
             if (!isset($_SESSION['surfer_editor']) || $_SESSION['surfer_editor'] == 'yacs') {
                 foreach ($codes as $code) {
                     $suffix .= '<a onclick="edit_insert(\'\', \' ' . $code . '\');return false;" title="insert" tabindex="2000">' . $code . '</a> ';
                 }
             } else {
                 $suffix .= join(' ', $codes);
             }
             $suffix .= BR;
         }
         // we are listing tables attached to an chor
         if ($anchor && $this->focus == $anchor->get_reference()) {
             $label = '_';
             // the title
             if ($item['title']) {
                 $suffix .= Skin::strip($item['title'], 10);
             }
             // an index of tables
         } else {
             // the title
             if ($item['title']) {
                 $label = Skin::strip($item['title'], 10);
             }
         }
         // flag tables created or updated very recently
         if (isset($item['create_date']) && $item['create_date'] >= $context['fresh']) {
             $suffix .= NEW_FLAG;
         } elseif (isset($item['edit_date']) && $item['edit_date'] >= $context['fresh']) {
             $suffix .= UPDATED_FLAG;
         }
         // details
         $details = array();
         if (Surfer::is_associate() && $item['nick_name']) {
             $details[] = '"' . $item['nick_name'] . '"';
         }
         if (Surfer::is_logged() && $item['edit_name']) {
             $details[] = sprintf(i18n::s('edited by %s %s'), Users::get_link($item['edit_name'], $item['edit_address'], $item['edit_id']), Skin::build_date($item['edit_date']));
         }
         // the menu bar for associates and poster
         if (Surfer::is_empowered()) {
             $details[] = Skin::build_link(Tables::get_url($item['id'], 'view'), i18n::s('details'), 'basic');
             $details[] = Skin::build_link(Tables::get_url($item['id'], 'edit'), i18n::s('edit'), 'basic');
             $details[] = Skin::build_link(Tables::get_url($item['id'], 'delete'), i18n::s('delete'), 'basic');
         }
         // append details
         if (count($details)) {
             $suffix .= BR . Skin::finalize_list($details, 'menu');
         }
         // list all components for this item
         $items[$url] = array($prefix, $label, $suffix, 'table', $icon);
     }
     // end of processing
     SQL::free($result);
     return $items;
 }

 /**
  * get some statistics for one anchor
  *
  * @param the selected anchor (e.g., 'article:12')
  * @return the resulting ($count, $min_date, $max_date) array
  */
 public static function stat_past_for_anchor($anchor)
 {
     global $context;
     // restrict the query to addressable content
     $where = Articles::get_sql_where();
     // put only published pages in boxes
     if (isset($variant) && $variant == 'boxes') {
         $where .= " AND NOT ((articles.publish_date is NULL) OR (articles.publish_date <= '0000-00-00'))" . " AND (articles.publish_date < '" . $context['now'] . "')";
         // provide published pages to anonymous surfers
     } elseif (!Surfer::is_logged()) {
         $where .= " AND NOT ((articles.publish_date is NULL) OR (articles.publish_date <= '0000-00-00'))" . " AND (articles.publish_date < '" . $context['now'] . "')";
         // logged surfers that are non-associates are restricted to their own articles, plus published articles
     } elseif (!Surfer::is_empowered()) {
         $where .= " AND ((articles.create_id=" . Surfer::get_id() . ") OR (NOT ((articles.publish_date is NULL) OR (articles.publish_date <= '0000-00-00'))" . " AND (articles.publish_date < '" . $context['now'] . "')))";
     }
     // now
     $match = gmstrftime('%Y-%m-%d %H:%M:%S');
     // select among available items
     $query = "SELECT COUNT(*) as count, MIN(articles.edit_date) as oldest_date, MAX(articles.edit_date) as newest_date " . " FROM " . SQL::table_name('dates') . " as dates " . ", " . SQL::table_name('articles') . " AS articles" . " WHERE ((dates.anchor_type LIKE 'article') AND (dates.anchor_id = articles.id))" . "\tAND (dates.date_stamp < '" . SQL::escape($match) . "') AND\t(articles.anchor = '" . SQL::escape($anchor) . "') AND " . $where;
     $output = SQL::query_first($query);
     return $output;
 }

//.........这里部分代码省略.........
             return FALSE;
         }
     }
     // surfer is not allowed to upload a file
     if (!Surfer::may_upload()) {
         return FALSE;
     }
     // surfer is an associate
     if (Surfer::is_associate()) {
         return TRUE;
     }
     // submissions have been disallowed
     if (isset($context['users_without_submission']) && $context['users_without_submission'] == 'Y') {
         return FALSE;
     }
     // only in articles
     if ($variant == 'article') {
         // surfer is entitled to change content
         if (Articles::allow_modification($item, $anchor)) {
             return TRUE;
         }
         // surfer is an editor, and the page is not private
         if (isset($item['active']) && $item['active'] != 'N' && Articles::is_assigned($item['id'])) {
             return TRUE;
         }
         if (is_object($anchor) && !$anchor->is_hidden() && $anchor->is_assigned()) {
             return TRUE;
         }
         // only in iles
     } elseif ($variant == 'file') {
         // surfer owns the anchor
         if (is_object($anchor) && $anchor->is_owned()) {
             return TRUE;
         }
         // only in sections
     } elseif ($variant == 'section') {
         // surfer is entitled to change content
         if (Sections::allow_modification($item, $anchor)) {
             return TRUE;
         }
         // only in user profiles
     } elseif ($variant == 'user') {
         // the item is anchored to the profile of this member
         if (Surfer::get_id() && is_object($anchor) && !strcmp($anchor->get_reference(), 'user:' . Surfer::get_id())) {
             return TRUE;
         }
         // should not happen...
         if (isset($item['id']) && Surfer::is($item['id'])) {
             return TRUE;
         }
     }
     // item has been locked
     if (isset($item['locked']) && $item['locked'] == 'Y') {
         return FALSE;
     }
     // anchor has been locked --only used when there is no item provided
     if (!isset($item['id']) && is_object($anchor) && $anchor->has_option('locked')) {
         return FALSE;
     }
     // not for subscribers
     if (Surfer::is_member()) {
         // surfer is an editor (and item has not been locked)
         if ($variant == 'article' && isset($item['id']) && Articles::is_assigned($item['id'])) {
             return TRUE;
         }
         // surfer is assigned to parent container
         if (is_object($anchor) && $anchor->is_assigned()) {
             return TRUE;
         }
     }
     // container is hidden
     if (isset($item['active']) && $item['active'] == 'N') {
         return FALSE;
     }
     if (is_object($anchor) && $anchor->is_hidden()) {
         return FALSE;
     }
     // authenticated members are allowed to add images to pages
     if ($variant == 'article' && Surfer::is_logged()) {
         return TRUE;
     }
     // container is restricted
     if (isset($item['active']) && $item['active'] == 'R') {
         return FALSE;
     }
     if (is_object($anchor) && !$anchor->is_public()) {
         return FALSE;
     }
     // anonymous contributions are allowed for articles
     if ($variant == 'article') {
         if (isset($item['options']) && preg_match('/\\banonymous_edit\\b/i', $item['options'])) {
             return TRUE;
         }
         if (is_object($anchor) && $anchor->has_option('anonymous_edit')) {
             return TRUE;
         }
     }
     // the default is to not allow for new images
     return FALSE;
 }

 $label = i18n::s('Its title');
 $input = '<input type="text" name="title" size="45" maxlength="255" />';
 $hint = i18n::s('The title of your page');
 $fields[] = array($label, $input, $hint);
 // the excerpt
 $label = i18n::s('Excerpt or description');
 $input = '<textarea name="excerpt" rows="5" cols="50"></textarea>';
 $hint = i18n::s('As this field may be searched by surfers, please choose adequate searchable words');
 $fields[] = array($label, $input, $hint);
 // the blog name
 $label = i18n::s('Blog name or section');
 $input = '<input type="text" name="blog_name" size="45" value="' . encode_field($blog_name) . '" maxlength="64" />';
 $hint = i18n::s('To complement the excerpt');
 $fields[] = array($label, $input, $hint);
 // random string to stop robots
 if (!Surfer::is_logged() && ($field = Surfer::get_robot_stopper())) {
     $fields[] = $field;
 }
 // build the form
 $text .= Skin::build_form($fields);
 // the submit button
 $text .= '<p>' . Skin::build_submit_button(i18n::s('Submit'), i18n::s('Press [s] to submit data'), 's') . '</p>';
 // other hidden fields
 $text .= '<input type="hidden" name="anchor" value="' . $anchor->get_reference() . '" />';
 // end of the form
 $text .= '</div></form>';
 // the script used for form handling at the browser
 Page::insert_script('func' . 'tion validateDocumentPost(container) {' . "\n" . '	if(!container.url.value) {' . "\n" . '		alert("' . i18n::s('Please type a valid link.') . '");' . "\n" . '		Yacs.stopWorking();' . "\n" . '		return false;' . "\n" . '	}' . "\n" . '	if(!container.title.value) {' . "\n" . '		alert("' . i18n::s('Please provide a meaningful title.') . '");' . "\n" . '		Yacs.stopWorking();' . "\n" . '		return false;' . "\n" . '	}' . "\n" . '	if(!container.exceprt.value) {' . "\n" . '		alert("' . i18n::s('You must type an excerpt of the referencing page.') . '");' . "\n" . '		Yacs.stopWorking();' . "\n" . '		return false;' . "\n" . '	}' . "\n" . '	if(!container.blog_name.value) {' . "\n" . '		alert("' . i18n::s('You must name the originating blog.') . '");' . "\n" . '		Yacs.stopWorking();' . "\n" . '		return false;' . "\n" . '	}' . "\n" . '	return true;' . "\n" . '}' . "\n" . '$("#url").focus();' . "\n");
 // trackback link
 $label = i18n::s('Trackback address:');
 $value = $context['url_to_home'] . $context['url_to_root'] . 'links/trackback.php?anchor=' . $anchor->get_reference();

            }
            // the submit button
            $menu[] = Skin::build_submit_button(i18n::s('Submit'), i18n::s('Press [s] to submit data'), 's', 'submit');
            // go to smileys
            //		$menu[] = Skin::build_link('smileys/', i18n::s('Smileys'), 'open');
            // display all commands
            $context['text'] .= Skin::finalize_list($menu, 'menu_bar');
            // end the form
            $context['text'] .= '</form>' . "\n";
        }
        // end of the wrapper
        $context['text'] .= '</div>' . "\n";
        // the AJAX part
        $js_script = 'var Comments = {' . "\n" . "\n" . '	url: "' . $context['url_to_home'] . $context['url_to_root'] . Comments::get_url($item['id'], 'thread') . '",' . "\n" . '	timestamp: 0,' . "\n" . "\n" . '	initialize: function() { },' . "\n" . "\n" . '	contribute: function() {' . "\n" . '		Yacs.startWorking();' . "\n" . '		$("#upload_frame").load(Comments.contributed);' . "\n" . '		return true;' . "\n" . '	},' . "\n" . "\n" . '	contributed: function() {' . "\n" . '		$("#upload_frame").unbind("load");' . "\n" . '		$("#comment_upload").slideUp(600);' . "\n" . '		$("#upload_option").slideUp();' . "\n" . '		$("#upload").replaceWith(\'<input type="file" id="upload" name="upload" size="30" />\');' . "\n" . '		$("#description").val("").trigger("change").focus();' . "\n" . '		setTimeout(function() {Comments.subscribe(); Yacs.stopWorking();}, 500);' . "\n" . '		if((typeof OpenTok == "object") && OpenTok.session)' . "\n" . '			OpenTok.signal();' . "\n" . '	},' . "\n" . "\n" . '	keypress: function(event) {' . "\n" . '		if(event.which == 13) {' . "\n" . '			$("#submit").trigger("click");' . "\n" . '			return false;' . "\n" . '		}' . "\n" . '	},' . "\n" . "\n" . '	showMore: function() {' . "\n" . '		var options = {};' . "\n" . '		var newHeight = $("#thread_text_panel").clientHeight + 200;' . "\n" . '		options.height =  newHeight + "px";' . "\n" . '		options.maxHeight =  newHeight + "px";' . "\n" . '		$("#thread_text_panel").css(options);' . "\n" . '	},' . "\n" . "\n" . '	subscribe: function() {' . "\n" . '		$.ajax(Comments.url, {' . "\n" . '			type: "get",' . "\n" . '			dataType: "json",' . "\n" . '			data: { "timestamp" : Comments.timestamp },' . "\n" . '			success: Comments.updateOnSuccess' . "\n" . '		});' . "\n" . "\n" . '	},' . "\n" . "\n" . '	subscribeToExtraUpdates: function() {' . "\n" . '		$.ajax("' . $context['url_to_home'] . $context['url_to_root'] . Users::get_url($item['id'], 'visit') . '", {' . "\n" . '			type: "get",' . "\n" . '			dataType: "html",' . "\n" . '			success: function(data) { $("#thread_roster_panel").html(data); }' . "\n" . '		});' . "\n" . "\n" . '		$.ajax("' . $context['url_to_home'] . $context['url_to_root'] . Files::get_url($item['id'], 'thread') . '", {' . "\n" . '			type: "get",' . "\n" . '			dataType: "html",' . "\n" . '			success: function(data) { $("#thread_files_panel").html(data); }' . "\n" . '		});' . "\n" . "\n" . '	},' . "\n" . "\n" . '	updateOnSuccess: function(response) {' . "\n" . '		if(!response) return;' . "\n" . '		if(response["status"] != "started")' . "\n" . '			window.location.reload(true);' . "\n" . '		$("#thread_text_panel").html("<div>" + response["items"] + "</div>");' . "\n" . '		var div = $("#thread_text_panel")[0];' . "\n" . '		var scrollHeight = Math.max(div.scrollHeight, div.clientHeight);' . "\n" . '		div.scrollTop = scrollHeight - div.clientHeight;' . "\n" . '		if(typeof Comments.windowOriginalTitle != "string")' . "\n" . '			Comments.windowOriginalTitle = document.title;' . "\n" . '		document.title = "[" + response["name"] + "] " + Comments.windowOriginalTitle;' . "\n" . '		Comments.timestamp = response["timestamp"];' . "\n" . '	}' . "\n" . "\n" . '}' . "\n" . "\n" . '// wait for new comments and for other updates' . "\n" . 'Comments.subscribeTimer = setInterval("Comments.subscribe()", 5000);' . "\n" . 'Comments.subscribeTimer = setInterval("Comments.subscribeToExtraUpdates()", 59999);' . "\n" . "\n" . '// load past contributions asynchronously' . "\n" . '$(function() {' . 'Comments.subscribe();' . 'location.hash="#thread_text_panel";' . '$("#description").tipsy({gravity: "s", fade: true, title: function () {return "' . i18n::s('Contribute here') . '";}, trigger: "manual"});' . '$("#description").tipsy("show");' . 'setTimeout("$(\'#description\').tipsy(\'hide\');", 10000);' . '$("textarea#description").autogrow();' . '});' . "\n";
        // only authenticated surfers can contribute
        if (Surfer::is_logged() && Comments::allow_creation($item, $anchor)) {
            $js_script .= '$(function() {' . '$("#description").focus();' . '});' . "\n" . '$(\'#description\').keypress( Comments.keypress );' . "\n";
        }
        break;
        Page::insert_script($js_script);
    case 'excluded':
        // surfer is not
        $context['text'] .= Skin::build_block(i18n::s('You have not been enrolled into this interactive chat.'), 'caution');
        break;
}
//
// trailer information
//
// add trailer information from the overlay, if any --opentok videos come from here
if (is_object($overlay)) {
    $context['text'] .= $overlay->get_text('trailer', $item);

     $label = i18n::s('Section');
     $input = '<select name="anchor">' . Sections::get_options(NULL, 'bookmarks') . '</select>';
     $hint = i18n::s('Please carefully select a section for your link');
     $fields[] = array($label, $input, $hint);
     // allow for section change
 } elseif ($item['id'] && preg_match('/section:/', $current = $anchor->get_reference())) {
     $label = i18n::s('Section');
     $input = '<select name="anchor">' . Sections::get_options($current, NULL) . '</select>';
     $hint = i18n::s('Please carefully select a section for your link');
     $fields[] = array($label, $input, $hint);
     // else preserve the previous anchor
 } elseif (is_object($anchor)) {
     $context['text'] .= '<input type="hidden" name="anchor" value="' . $anchor->get_reference() . '" />';
 }
 // additional fields for anonymous surfers
 if (!isset($item['id']) && !Surfer::is_logged()) {
     // splash
     if (isset($item['id'])) {
         if (is_object($anchor)) {
             $login_url = $context['url_to_root'] . 'users/login.php?url=' . urlencode('links/edit.php?id=' . $item['id'] . '&anchor=' . $anchor->get_reference());
         } else {
             $login_url = $context['url_to_root'] . 'users/login.php?url=' . urlencode('links/edit.php?id=' . $item['id']);
         }
     } else {
         if (is_object($anchor)) {
             $login_url = $context['url_to_root'] . 'users/login.php?url=' . urlencode('links/edit.php?anchor=' . $anchor->get_reference());
         } else {
             $login_url = $context['url_to_root'] . 'users/login.php?url=' . urlencode('links/edit.php');
         }
     }
     $context['text'] .= '<p>' . sprintf(i18n::s('If you have previously registered to this site, please %s. Then the server will automatically put your name and address in following fields.'), Skin::build_link($login_url, i18n::s('authenticate'))) . "</p>\n";