diff options
Diffstat (limited to 'plugins/instances/init.php')
| -rw-r--r-- | plugins/instances/init.php | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/plugins/instances/init.php b/plugins/instances/init.php new file mode 100644 index 000000000..3acb163cc --- /dev/null +++ b/plugins/instances/init.php @@ -0,0 +1,398 @@ +<?php +class Instances extends Plugin implements IHandler { + + private $link; + private $host; + + private $status_codes = array( + 0 => "Connection failed", + 1 => "Success", + 2 => "Invalid object received", + 16 => "Access denied" ); + + function about() { + return array(1.0, + "Support for linking tt-rss instances together and sharing popular feeds.", + "fox", + true); + } + + function init($host) { + $this->link = $host->get_link(); + $this->host = $host; + + $host->add_hook($host::HOOK_PREFS_TABS, $this); + $host->add_handler("pref-instances", "*", $this); + $host->add_handler("public", "fbexport", $this); + $host->add_command("get-feeds", "receive popular feeds from linked instances", $this); + $host->add_hook($host::HOOK_UPDATE_TASK, $this); + } + + function hook_update_task($args) { + _debug("Get linked feeds..."); + $this->get_linked_feeds($this->link); + } + + // Status codes: + // -1 - never connected + // 0 - no data received + // 1 - data received successfully + // 2 - did not receive valid data + // >10 - server error, code + 10 (e.g. 16 means server error 6) + + function get_linked_feeds($link, $instance_id = false) { + if ($instance_id) + $instance_qpart = "id = '$instance_id' AND "; + else + $instance_qpart = ""; + + if (DB_TYPE == "pgsql") { + $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'"; + } else { + $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)"; + } + + $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances + WHERE $instance_qpart $date_qpart ORDER BY last_connected"); + + while ($line = db_fetch_assoc($result)) { + $id = $line['id']; + + _debug("Updating: " . $line['access_url'] . " ($id)"); + + $fetch_url = $line['access_url'] . '/public.php?op=fbexport'; + $post_query = 'key=' . $line['access_key']; + + $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query); + + // try doing it the old way + if (!$feeds) { + $fetch_url = $line['access_url'] . '/backend.php?op=fbexport'; + $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query); + } + + if ($feeds) { + $feeds = json_decode($feeds, true); + + if ($feeds) { + if ($feeds['error']) { + $status = $feeds['error']['code'] + 10; + + // access denied + if ($status == 16) { + db_query($link, "DELETE FROM ttrss_linked_feeds + WHERE instance_id = '$id'"); + } + } else { + $status = 1; + + if (count($feeds['feeds']) > 0) { + + db_query($link, "DELETE FROM ttrss_linked_feeds + WHERE instance_id = '$id'"); + + foreach ($feeds['feeds'] as $feed) { + $feed_url = db_escape_string($feed['feed_url']); + $title = db_escape_string($feed['title']); + $subscribers = db_escape_string($feed['subscribers']); + $site_url = db_escape_string($feed['site_url']); + + db_query($link, "INSERT INTO ttrss_linked_feeds + (feed_url, site_url, title, subscribers, instance_id, created, updated) + VALUES + ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())"); + } + } else { + // received 0 feeds, this might indicate that + // the instance on the other hand is rebuilding feedbrowser cache + // we will try again later + + // TODO: maybe perform expiration based on updated here? + } + + _debug("Processed " . count($feeds['feeds']) . " feeds."); + } + } else { + $status = 2; + } + + } else { + $status = 0; + } + + _debug("Status: $status"); + + db_query($link, "UPDATE ttrss_linked_instances SET + last_status_out = '$status', last_connected = NOW() WHERE id = '$id'"); + + } + } + + + function get_feeds() { + $this->get_linked_feeds($this->link, false); + } + + function get_prefs_js() { + return file_get_contents(dirname(__FILE__) . "/instances.js"); + } + + function hook_prefs_tabs($args) { + if ($_SESSION["access_level"] >= 10 || SINGLE_USER_MODE) { + ?><div id="instanceConfigTab" dojoType="dijit.layout.ContentPane" + href="backend.php?op=pref-instances" + title="<?php echo __('Linked') ?>"></div><?php + } + } + + function csrf_ignore($method) { + $csrf_ignored = array("index", "edit"); + + return array_search($method, $csrf_ignored) !== false; + } + + function before($method) { + if ($_SESSION["uid"]) { + if ($_SESSION["access_level"] < 10) { + print __("Your access level is insufficient to open this tab."); + return false; + } + return true; + } + return false; + } + + function after() { + return true; + } + + function remove() { + $ids = db_escape_string($_REQUEST['ids']); + + db_query($this->link, "DELETE FROM ttrss_linked_instances WHERE + id IN ($ids)"); + } + + function add() { + $id = db_escape_string($_REQUEST["id"]); + $access_url = db_escape_string($_REQUEST["access_url"]); + $access_key = db_escape_string($_REQUEST["access_key"]); + + db_query($this->link, "BEGIN"); + + $result = db_query($this->link, "SELECT id FROM ttrss_linked_instances + WHERE access_url = '$access_url'"); + + if (db_num_rows($result) == 0) { + db_query($this->link, "INSERT INTO ttrss_linked_instances + (access_url, access_key, last_connected, last_status_in, last_status_out) + VALUES + ('$access_url', '$access_key', '1970-01-01', -1, -1)"); + + } + + db_query($this->link, "COMMIT"); + } + + function edit() { + $id = db_escape_string($_REQUEST["id"]); + + $result = db_query($this->link, "SELECT * FROM ttrss_linked_instances WHERE + id = '$id'"); + + print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"id\" value=\"$id\">"; + print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"op\" value=\"pref-instances\">"; + print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"method\" value=\"editSave\">"; + + print "<div class=\"dlgSec\">".__("Instance")."</div>"; + + print "<div class=\"dlgSecCont\">"; + + /* URL */ + + $access_url = htmlspecialchars(db_fetch_result($result, 0, "access_url")); + + print __("URL:") . " "; + + print "<input dojoType=\"dijit.form.ValidationTextBox\" required=\"1\" + placeHolder=\"".__("Instance URL")."\" + regExp='^(http|https)://.*' + style=\"font-size : 16px; width: 20em\" name=\"access_url\" + value=\"$access_url\">"; + + print "<hr/>"; + + $access_key = htmlspecialchars(db_fetch_result($result, 0, "access_key")); + + /* Access key */ + + print __("Access key:") . " "; + + print "<input dojoType=\"dijit.form.ValidationTextBox\" required=\"1\" + placeHolder=\"".__("Access key")."\" regExp='\w{40}' + style=\"width: 20em\" name=\"access_key\" id=\"instance_edit_key\" + value=\"$access_key\">"; + + print "<p class='insensitive'>" . __("Use one access key for both linked instances."); + + print "</div>"; + + print "<div class=\"dlgButtons\"> + <div style='float : left'> + <button dojoType=\"dijit.form.Button\" + onclick=\"return dijit.byId('instanceEditDlg').regenKey()\">". + __('Generate new key')."</button> + </div> + <button dojoType=\"dijit.form.Button\" + onclick=\"return dijit.byId('instanceEditDlg').execute()\">". + __('Save')."</button> + <button dojoType=\"dijit.form.Button\" + onclick=\"return dijit.byId('instanceEditDlg').hide()\"\">". + __('Cancel')."</button></div>"; + + } + + function editSave() { + $id = db_escape_string($_REQUEST["id"]); + $access_url = db_escape_string($_REQUEST["access_url"]); + $access_key = db_escape_string($_REQUEST["access_key"]); + + db_query($this->link, "UPDATE ttrss_linked_instances SET + access_key = '$access_key', access_url = '$access_url', + last_connected = '1970-01-01' + WHERE id = '$id'"); + + } + + function index() { + + if (!function_exists('curl_init')) { + print "<div style='padding : 1em'>"; + print_error("This functionality requires CURL functions. Please enable CURL in your PHP configuration (you might also want to disable open_basedir in php.ini) and reload this page."); + print "</div>"; + } + + print "<div id=\"pref-instance-wrap\" dojoType=\"dijit.layout.BorderContainer\" gutters=\"false\">"; + print "<div id=\"pref-instance-header\" dojoType=\"dijit.layout.ContentPane\" region=\"top\">"; + + print "<div id=\"pref-instance-toolbar\" dojoType=\"dijit.Toolbar\">"; + + $sort = db_escape_string($_REQUEST["sort"]); + + if (!$sort || $sort == "undefined") { + $sort = "access_url"; + } + + print "<div dojoType=\"dijit.form.DropDownButton\">". + "<span>" . __('Select')."</span>"; + print "<div dojoType=\"dijit.Menu\" style=\"display: none;\">"; + print "<div onclick=\"selectTableRows('prefInstanceList', 'all')\" + dojoType=\"dijit.MenuItem\">".__('All')."</div>"; + print "<div onclick=\"selectTableRows('prefInstanceList', 'none')\" + dojoType=\"dijit.MenuItem\">".__('None')."</div>"; + print "</div></div>"; + + print "<button dojoType=\"dijit.form.Button\" onclick=\"addInstance()\">".__('Link instance')."</button>"; + print "<button dojoType=\"dijit.form.Button\" onclick=\"editSelectedInstance()\">".__('Edit')."</button>"; + print "<button dojoType=\"dijit.form.Button\" onclick=\"removeSelectedInstances()\">".__('Remove')."</button>"; + + print "</div>"; #toolbar + + $result = db_query($this->link, "SELECT *, + (SELECT COUNT(*) FROM ttrss_linked_feeds + WHERE instance_id = ttrss_linked_instances.id) AS num_feeds + FROM ttrss_linked_instances + ORDER BY $sort"); + + print "<p class=\"insensitive\" style='margin-left : 1em;'>" . __("You can connect other instances of Tiny Tiny RSS to this one to share Popular feeds. Link to this instance of Tiny Tiny RSS by using this URL:"); + + print " <a href=\"#\" onclick=\"alert('".htmlspecialchars(get_self_url_prefix())."')\">(display url)</a>"; + + print "<p><table width='100%' id='prefInstanceList' class='prefInstanceList' cellspacing='0'>"; + + print "<tr class=\"title\"> + <td align='center' width=\"5%\"> </td> + <td width=''><a href=\"#\" onclick=\"updateInstanceList('access_url')\">".__('Instance URL')."</a></td> + <td width='20%'><a href=\"#\" onclick=\"updateInstanceList('access_key')\">".__('Access key')."</a></td> + <td width='10%'><a href=\"#\" onclick=\"updateUsersList('last_connected')\">".__('Last connected')."</a></td> + <td width='10%'><a href=\"#\" onclick=\"updateUsersList('last_status_out')\">".__('Status')."</a></td> + <td width='10%'><a href=\"#\" onclick=\"updateUsersList('num_feeds')\">".__('Stored feeds')."</a></td> + </tr>"; + + $lnum = 0; + + while ($line = db_fetch_assoc($result)) { + $class = ($lnum % 2) ? "even" : "odd"; + + $id = $line['id']; + $this_row_id = "id=\"LIRR-$id\""; + + $line["last_connected"] = make_local_datetime($this->link, $line["last_connected"], false); + + print "<tr class=\"$class\" $this_row_id>"; + + print "<td align='center'><input onclick='toggleSelectRow(this);' + type=\"checkbox\" id=\"LICHK-$id\"></td>"; + + $onclick = "onclick='editInstance($id, event)' title='".__('Click to edit')."'"; + + $access_key = mb_substr($line['access_key'], 0, 4) . '...' . + mb_substr($line['access_key'], -4); + + print "<td $onclick>" . htmlspecialchars($line['access_url']) . "</td>"; + print "<td $onclick>" . htmlspecialchars($access_key) . "</td>"; + print "<td $onclick>" . htmlspecialchars($line['last_connected']) . "</td>"; + print "<td $onclick>" . $this->status_codes[$line['last_status_out']] . "</td>"; + print "<td $onclick>" . htmlspecialchars($line['num_feeds']) . "</td>"; + + print "</tr>"; + + ++$lnum; + } + + print "</table>"; + + print "</div>"; #pane + + global $pluginhost; + $pluginhost->run_hooks($pluginhost::HOOK_PREFS_TAB, + "hook_prefs_tab", "prefInstances"); + + print "</div>"; #container + + } + + function fbexport() { + + $access_key = db_escape_string($_POST["key"]); + + // TODO: rate limit checking using last_connected + $result = db_query($this->link, "SELECT id FROM ttrss_linked_instances + WHERE access_key = '$access_key'"); + + if (db_num_rows($result) == 1) { + + $instance_id = db_fetch_result($result, 0, "id"); + + $result = db_query($this->link, "SELECT feed_url, site_url, title, subscribers + FROM ttrss_feedbrowser_cache ORDER BY subscribers DESC LIMIT 100"); + + $feeds = array(); + + while ($line = db_fetch_assoc($result)) { + array_push($feeds, $line); + } + + db_query($this->link, "UPDATE ttrss_linked_instances SET + last_status_in = 1 WHERE id = '$instance_id'"); + + print json_encode(array("feeds" => $feeds)); + } else { + print json_encode(array("error" => array("code" => 6))); + } + } + + +} +?> + |