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- <?php
- class Instances extends Plugin implements IHandler {
- 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->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...");
- $this->get_linked_feeds();
- }
- // Status codes:
- // -1 - never connected
- // 0 - no data received
- // 1 - data received successfully
- // 2 - did not receive valid data
- // >10 - server error, code + 10 (e.g. 16 means server error 6)
- function get_linked_feeds($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("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("DELETE FROM ttrss_linked_feeds
- WHERE instance_id = '$id'");
- }
- } else {
- $status = 1;
- if (count($feeds['feeds']) > 0) {
- db_query("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("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: $status");
- db_query("UPDATE ttrss_linked_instances SET
- last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
- }
- }
- function get_feeds() {
- $this->get_linked_feeds(false);
- }
- function get_prefs_js() {
- return file_get_contents(dirname(__FILE__) . "/instances.js");
- }
- function hook_prefs_tabs($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("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("BEGIN");
- $result = db_query("SELECT id FROM ttrss_linked_instances
- WHERE access_url = '$access_url'");
- if (db_num_rows($result) == 0) {
- db_query("INSERT INTO ttrss_linked_instances
- (access_url, access_key, last_connected, last_status_in, last_status_out)
- VALUES
- ('$access_url', '$access_key', '1970-01-01', -1, -1)");
- }
- db_query("COMMIT");
- }
- function edit() {
- $id = db_escape_string($_REQUEST["id"]);
- $result = db_query("SELECT * FROM ttrss_linked_instances WHERE
- id = '$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("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("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\"";
- $line["last_connected"] = make_local_datetime($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
- PluginHost::getInstance()->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
- $result = db_query("SELECT id FROM ttrss_linked_instances
- WHERE access_key = '$access_key'");
- if (db_num_rows($result) == 1) {
- $instance_id = db_fetch_result($result, 0, "id");
- $result = db_query("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, $line);
- }
- db_query("UPDATE ttrss_linked_instances SET
- last_status_in = 1 WHERE id = '$instance_id'");
- print json_encode(array("feeds" => $feeds));
- } else {
- print json_encode(array("error" => array("code" => 6)));
- }
- }
- function addInstance() {
- 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=\"add\">";
- print "<div class=\"dlgSec\">".__("Instance")."</div>";
- print "<div class=\"dlgSecCont\">";
- /* 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\">";
- print "<hr/>";
- $access_key = sha1(uniqid(rand(), true));
- /* Access key */
- print __("Access key:") . " ";
- print "<input dojoType=\"dijit.form.ValidationTextBox\" required=\"1\"
- placeHolder=\"".__("Access key")."\" regExp='\w{40}'
- style=\"width: 20em\" name=\"access_key\" id=\"instance_add_key\"
- value=\"$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('instanceAddDlg').regenKey()\">".
- __('Generate new key')."</button>
- </div>
- <button dojoType=\"dijit.form.Button\"
- onclick=\"return dijit.byId('instanceAddDlg').execute()\">".
- __('Create link')."</button>
- <button dojoType=\"dijit.form.Button\"
- onclick=\"return dijit.byId('instanceAddDlg').hide()\"\">".
- __('Cancel')."</button></div>";
- return;
- }
- function genHash() {
- $hash = sha1(uniqid(rand(), true));
- print json_encode(array("hash" => $hash));
- }
- function api_version() {
- return 2;
- }
- }
- ?>
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