452 lines
14 KiB
PHP
452 lines
14 KiB
PHP
<?php
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class Instances extends Plugin implements IHandler {
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private $host;
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private $status_codes = array(
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0 => "Connection failed",
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1 => "Success",
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2 => "Invalid object received",
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16 => "Access denied" );
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function about() {
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return array(1.0,
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"Support for linking tt-rss instances together and sharing popular feeds.",
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"fox",
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true);
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}
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function init($host) {
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$this->host = $host;
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$host->add_hook($host::HOOK_PREFS_TABS, $this);
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$host->add_handler("pref-instances", "*", $this);
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$host->add_handler("public", "fbexport", $this);
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$host->add_command("get-feeds", "receive popular feeds from linked instances", $this);
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$host->add_hook($host::HOOK_UPDATE_TASK, $this);
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}
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function hook_update_task($args) {
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_debug("Get linked feeds...");
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$this->get_linked_feeds();
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}
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// Status codes:
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// -1 - never connected
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// 0 - no data received
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// 1 - data received successfully
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// 2 - did not receive valid data
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// >10 - server error, code + 10 (e.g. 16 means server error 6)
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function get_linked_feeds($instance_id = false) {
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if ($instance_id)
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$instance_qpart = "id = '$instance_id' AND ";
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else
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$instance_qpart = "";
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if (DB_TYPE == "pgsql") {
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$date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
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} else {
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$date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
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}
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$result = db_query("SELECT id, access_key, access_url FROM ttrss_linked_instances
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WHERE $instance_qpart $date_qpart ORDER BY last_connected");
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while ($line = db_fetch_assoc($result)) {
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$id = $line['id'];
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_debug("Updating: " . $line['access_url'] . " ($id)");
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$fetch_url = $line['access_url'] . '/public.php?op=fbexport';
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$post_query = 'key=' . $line['access_key'];
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$feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
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// try doing it the old way
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if (!$feeds) {
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$fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
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$feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
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}
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if ($feeds) {
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$feeds = json_decode($feeds, true);
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if ($feeds) {
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if ($feeds['error']) {
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$status = $feeds['error']['code'] + 10;
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// access denied
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if ($status == 16) {
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db_query("DELETE FROM ttrss_linked_feeds
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WHERE instance_id = '$id'");
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}
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} else {
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$status = 1;
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if (count($feeds['feeds']) > 0) {
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db_query("DELETE FROM ttrss_linked_feeds
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WHERE instance_id = '$id'");
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foreach ($feeds['feeds'] as $feed) {
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$feed_url = db_escape_string($feed['feed_url']);
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$title = db_escape_string($feed['title']);
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$subscribers = db_escape_string($feed['subscribers']);
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$site_url = db_escape_string($feed['site_url']);
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db_query("INSERT INTO ttrss_linked_feeds
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(feed_url, site_url, title, subscribers, instance_id, created, updated)
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VALUES
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('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
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}
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} else {
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// received 0 feeds, this might indicate that
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// the instance on the other hand is rebuilding feedbrowser cache
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// we will try again later
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// TODO: maybe perform expiration based on updated here?
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}
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_debug("Processed " . count($feeds['feeds']) . " feeds.");
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}
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} else {
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$status = 2;
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}
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} else {
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$status = 0;
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}
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_debug("Status: $status");
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db_query("UPDATE ttrss_linked_instances SET
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last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
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}
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}
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function get_feeds() {
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$this->get_linked_feeds(false);
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}
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function get_prefs_js() {
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return file_get_contents(dirname(__FILE__) . "/instances.js");
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}
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function hook_prefs_tabs($args) {
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if ($_SESSION["access_level"] >= 10 || SINGLE_USER_MODE) {
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?><div id="instanceConfigTab" dojoType="dijit.layout.ContentPane"
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href="backend.php?op=pref-instances"
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title="<?php echo __('Linked') ?>"></div><?php
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}
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}
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function csrf_ignore($method) {
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$csrf_ignored = array("index", "edit");
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return array_search($method, $csrf_ignored) !== false;
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}
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function before($method) {
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if ($_SESSION["uid"]) {
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if ($_SESSION["access_level"] < 10) {
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print __("Your access level is insufficient to open this tab.");
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return false;
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}
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return true;
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}
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return false;
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}
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function after() {
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return true;
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}
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function remove() {
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$ids = db_escape_string($_REQUEST['ids']);
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db_query("DELETE FROM ttrss_linked_instances WHERE
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id IN ($ids)");
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}
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function add() {
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$id = db_escape_string($_REQUEST["id"]);
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$access_url = db_escape_string($_REQUEST["access_url"]);
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$access_key = db_escape_string($_REQUEST["access_key"]);
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db_query("BEGIN");
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$result = db_query("SELECT id FROM ttrss_linked_instances
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WHERE access_url = '$access_url'");
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if (db_num_rows($result) == 0) {
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db_query("INSERT INTO ttrss_linked_instances
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(access_url, access_key, last_connected, last_status_in, last_status_out)
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VALUES
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('$access_url', '$access_key', '1970-01-01', -1, -1)");
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}
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db_query("COMMIT");
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}
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function edit() {
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$id = db_escape_string($_REQUEST["id"]);
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$result = db_query("SELECT * FROM ttrss_linked_instances WHERE
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id = '$id'");
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print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"id\" value=\"$id\">";
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print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"op\" value=\"pref-instances\">";
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print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"method\" value=\"editSave\">";
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print "<div class=\"dlgSec\">".__("Instance")."</div>";
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print "<div class=\"dlgSecCont\">";
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/* URL */
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$access_url = htmlspecialchars(db_fetch_result($result, 0, "access_url"));
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print __("URL:") . " ";
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print "<input dojoType=\"dijit.form.ValidationTextBox\" required=\"1\"
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placeHolder=\"".__("Instance URL")."\"
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regExp='^(http|https)://.*'
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style=\"font-size : 16px; width: 20em\" name=\"access_url\"
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value=\"$access_url\">";
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print "<hr/>";
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$access_key = htmlspecialchars(db_fetch_result($result, 0, "access_key"));
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/* Access key */
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print __("Access key:") . " ";
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print "<input dojoType=\"dijit.form.ValidationTextBox\" required=\"1\"
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placeHolder=\"".__("Access key")."\" regExp='\w{40}'
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style=\"width: 20em\" name=\"access_key\" id=\"instance_edit_key\"
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value=\"$access_key\">";
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print "<p class='insensitive'>" . __("Use one access key for both linked instances.");
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print "</div>";
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print "<div class=\"dlgButtons\">
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<div style='float : left'>
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<button dojoType=\"dijit.form.Button\"
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onclick=\"return dijit.byId('instanceEditDlg').regenKey()\">".
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__('Generate new key')."</button>
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</div>
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<button dojoType=\"dijit.form.Button\"
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onclick=\"return dijit.byId('instanceEditDlg').execute()\">".
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__('Save')."</button>
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<button dojoType=\"dijit.form.Button\"
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onclick=\"return dijit.byId('instanceEditDlg').hide()\"\">".
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__('Cancel')."</button></div>";
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}
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function editSave() {
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$id = db_escape_string($_REQUEST["id"]);
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$access_url = db_escape_string($_REQUEST["access_url"]);
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$access_key = db_escape_string($_REQUEST["access_key"]);
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db_query("UPDATE ttrss_linked_instances SET
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access_key = '$access_key', access_url = '$access_url',
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last_connected = '1970-01-01'
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WHERE id = '$id'");
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}
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function index() {
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if (!function_exists('curl_init')) {
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print "<div style='padding : 1em'>";
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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.");
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print "</div>";
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}
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print "<div id=\"pref-instance-wrap\" dojoType=\"dijit.layout.BorderContainer\" gutters=\"false\">";
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print "<div id=\"pref-instance-header\" dojoType=\"dijit.layout.ContentPane\" region=\"top\">";
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print "<div id=\"pref-instance-toolbar\" dojoType=\"dijit.Toolbar\">";
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$sort = db_escape_string($_REQUEST["sort"]);
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if (!$sort || $sort == "undefined") {
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$sort = "access_url";
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}
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print "<div dojoType=\"dijit.form.DropDownButton\">".
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"<span>" . __('Select')."</span>";
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print "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
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print "<div onclick=\"selectTableRows('prefInstanceList', 'all')\"
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dojoType=\"dijit.MenuItem\">".__('All')."</div>";
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print "<div onclick=\"selectTableRows('prefInstanceList', 'none')\"
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dojoType=\"dijit.MenuItem\">".__('None')."</div>";
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print "</div></div>";
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print "<button dojoType=\"dijit.form.Button\" onclick=\"addInstance()\">".__('Link instance')."</button>";
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print "<button dojoType=\"dijit.form.Button\" onclick=\"editSelectedInstance()\">".__('Edit')."</button>";
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print "<button dojoType=\"dijit.form.Button\" onclick=\"removeSelectedInstances()\">".__('Remove')."</button>";
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print "</div>"; #toolbar
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$result = db_query("SELECT *,
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(SELECT COUNT(*) FROM ttrss_linked_feeds
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WHERE instance_id = ttrss_linked_instances.id) AS num_feeds
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FROM ttrss_linked_instances
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ORDER BY $sort");
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print "<p class=\"insensitive\" style='margin-left : 1em;'>" . __("You can connect other instances of Tiny Tiny RSS to this one to share Popular feeds. Link to this instance of Tiny Tiny RSS by using this URL:");
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print " <a href=\"#\" onclick=\"alert('".htmlspecialchars(get_self_url_prefix())."')\">(display url)</a>";
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print "<p><table width='100%' id='prefInstanceList' class='prefInstanceList' cellspacing='0'>";
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print "<tr class=\"title\">
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<td align='center' width=\"5%\"> </td>
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<td width=''><a href=\"#\" onclick=\"updateInstanceList('access_url')\">".__('Instance URL')."</a></td>
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<td width='20%'><a href=\"#\" onclick=\"updateInstanceList('access_key')\">".__('Access key')."</a></td>
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<td width='10%'><a href=\"#\" onclick=\"updateUsersList('last_connected')\">".__('Last connected')."</a></td>
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<td width='10%'><a href=\"#\" onclick=\"updateUsersList('last_status_out')\">".__('Status')."</a></td>
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<td width='10%'><a href=\"#\" onclick=\"updateUsersList('num_feeds')\">".__('Stored feeds')."</a></td>
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</tr>";
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$lnum = 0;
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while ($line = db_fetch_assoc($result)) {
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$class = ($lnum % 2) ? "even" : "odd";
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$id = $line['id'];
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$this_row_id = "id=\"LIRR-$id\"";
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$line["last_connected"] = make_local_datetime($line["last_connected"], false);
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print "<tr class=\"$class\" $this_row_id>";
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print "<td align='center'><input onclick='toggleSelectRow(this);'
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type=\"checkbox\" id=\"LICHK-$id\"></td>";
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$onclick = "onclick='editInstance($id, event)' title='".__('Click to edit')."'";
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$access_key = mb_substr($line['access_key'], 0, 4) . '...' .
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mb_substr($line['access_key'], -4);
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print "<td $onclick>" . htmlspecialchars($line['access_url']) . "</td>";
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print "<td $onclick>" . htmlspecialchars($access_key) . "</td>";
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print "<td $onclick>" . htmlspecialchars($line['last_connected']) . "</td>";
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print "<td $onclick>" . $this->status_codes[$line['last_status_out']] . "</td>";
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print "<td $onclick>" . htmlspecialchars($line['num_feeds']) . "</td>";
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print "</tr>";
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++$lnum;
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}
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print "</table>";
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print "</div>"; #pane
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PluginHost::getInstance()->run_hooks(PluginHost::HOOK_PREFS_TAB,
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"hook_prefs_tab", "prefInstances");
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print "</div>"; #container
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}
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function fbexport() {
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$access_key = db_escape_string($_POST["key"]);
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// TODO: rate limit checking using last_connected
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$result = db_query("SELECT id FROM ttrss_linked_instances
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WHERE access_key = '$access_key'");
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if (db_num_rows($result) == 1) {
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$instance_id = db_fetch_result($result, 0, "id");
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$result = db_query("SELECT feed_url, site_url, title, subscribers
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FROM ttrss_feedbrowser_cache ORDER BY subscribers DESC LIMIT 100");
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$feeds = array();
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while ($line = db_fetch_assoc($result)) {
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array_push($feeds, $line);
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}
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db_query("UPDATE ttrss_linked_instances SET
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last_status_in = 1 WHERE id = '$instance_id'");
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print json_encode(array("feeds" => $feeds));
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} else {
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print json_encode(array("error" => array("code" => 6)));
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}
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}
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function addInstance() {
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print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"op\" value=\"pref-instances\">";
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print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"method\" value=\"add\">";
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print "<div class=\"dlgSec\">".__("Instance")."</div>";
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print "<div class=\"dlgSecCont\">";
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/* URL */
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print __("URL:") . " ";
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print "<input dojoType=\"dijit.form.ValidationTextBox\" required=\"1\"
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placeHolder=\"".__("Instance URL")."\"
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regExp='^(http|https)://.*'
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style=\"font-size : 16px; width: 20em\" name=\"access_url\">";
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print "<hr/>";
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$access_key = sha1(uniqid(rand(), true));
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/* Access key */
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print __("Access key:") . " ";
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print "<input dojoType=\"dijit.form.ValidationTextBox\" required=\"1\"
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placeHolder=\"".__("Access key")."\" regExp='\w{40}'
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style=\"width: 20em\" name=\"access_key\" id=\"instance_add_key\"
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value=\"$access_key\">";
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print "<p class='insensitive'>" . __("Use one access key for both linked instances.");
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print "</div>";
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print "<div class=\"dlgButtons\">
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<div style='float : left'>
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<button dojoType=\"dijit.form.Button\"
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onclick=\"return dijit.byId('instanceAddDlg').regenKey()\">".
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__('Generate new key')."</button>
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</div>
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<button dojoType=\"dijit.form.Button\"
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onclick=\"return dijit.byId('instanceAddDlg').execute()\">".
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__('Create link')."</button>
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<button dojoType=\"dijit.form.Button\"
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onclick=\"return dijit.byId('instanceAddDlg').hide()\"\">".
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__('Cancel')."</button></div>";
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return;
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}
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function genHash() {
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$hash = sha1(uniqid(rand(), true));
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print json_encode(array("hash" => $hash));
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}
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function api_version() {
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return 2;
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}
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}
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?>
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