add support for registering update.php commands; move rest of the self-updating stuff into updater plugin

1 files changed, 248 insertions, 3 deletions

diff --git a/plugins/updater/updater.php b/plugins/updater/updater.php
index f88ebe409..7fdda5fff 100644
--- a/plugins/updater/updater.php
+++ b/plugins/updater/updater.php
@@ -9,6 +9,253 @@ class Updater extends Plugin {
 		$this->host = $host;
 
 		$host->add_hook($host::HOOK_PREFS_TAB, $this);
+
+		$host->add_command("update-self",
+			"update tt-rss installation to latest version",
+			$this);
+	}
+
+	function update_self_step($link, $step, $params, $force = false) {
+		// __FILE__ is in plugins/updater so we need to go one level up
+		$work_dir = dirname(dirname(dirname(__FILE__)));
+		$parent_dir = dirname($work_dir);
+
+		if (!chdir($work_dir)) {
+			array_push($log, "Unable to change to work directory: $work_dir");
+			$stop = true; break;
+		}
+
+		$stop = false;
+		$log = array();
+		if (!is_array($params)) $params = array();
+
+		switch ($step) {
+		case 0:
+			array_push($log, "Work directory: $work_dir");
+
+			if (!is_writable($work_dir) && !is_writable("$parent_dir")) {
+				$user = posix_getpwuid(posix_geteuid());
+				$user = $user["name"];
+				array_push($log, "Both tt-rss and parent directories should be writable as current user ($user).");
+				$stop = true; break;
+			}
+
+			if (!file_exists("$work_dir/config.php") || !file_exists("$work_dir/include/sanity_check.php")) {
+				array_push($log, "Work directory $work_dir doesn't look like tt-rss installation.");
+				$stop = true; break;
+			}
+
+			if (!is_writable(sys_get_temp_dir())) {
+				array_push($log, "System temporary directory should be writable as current user.");
+				$stop = true; break;
+			}
+
+			array_push($log, "Checking for tar...");
+
+			$system_rc = 0;
+			system("tar --version >/dev/null", $system_rc);
+
+			if ($system_rc != 0) {
+				array_push($log, "Could not run tar executable (RC=$system_rc).");
+				$stop = true; break;
+			}
+
+			array_push($log, "Checking for latest version...");
+
+			$version_info = json_decode(fetch_file_contents("http://tt-rss.org/version.php"),
+				true);
+
+			if (!is_array($version_info)) {
+				array_push($log, "Unable to fetch version information.");
+				$stop = true; break;
+			}
+
+			$target_version = $version_info["version"];
+			$target_dir = "$parent_dir/tt-rss-$target_version";
+
+			array_push($log, "Target version: $target_version");
+			$params["target_version"] = $target_version;
+
+			if (version_compare(VERSION, $target_version) != -1 && !$force) {
+				array_push($log, "Your Tiny Tiny RSS installation is up to date.");
+				$stop = true; break;
+			}
+
+			if (file_exists($target_dir)) {
+				array_push($log, "Target directory $target_dir already exists.");
+				$stop = true; break;
+			}
+
+			break;
+		case 1:
+			$target_version = $params["target_version"];
+
+			array_push($log, "Downloading checksums...");
+			$md5sum_data = fetch_file_contents("http://tt-rss.org/download/md5sum.txt");
+
+			if (!$md5sum_data) {
+				array_push($log, "Could not download checksums.");
+				$stop = true; break;
+			}
+
+			$md5sum_data = explode("\n", $md5sum_data);
+
+			foreach ($md5sum_data as $line) {
+				$pair = explode("  ", $line);
+
+				if ($pair[1] == "tt-rss-$target_version.tar.gz") {
+					$target_md5sum = $pair[0];
+					break;
+				}
+			}
+
+			if (!$target_md5sum) {
+				array_push($log, "Unable to locate checksum for target version.");
+				$stop = true; break;
+			}
+
+			$params["target_md5sum"] = $target_md5sum;
+
+			break;
+		case 2:
+			$target_version = $params["target_version"];
+			$target_md5sum = $params["target_md5sum"];
+
+			array_push($log, "Downloading distribution tarball...");
+
+			$tarball_url = "http://tt-rss.org/download/tt-rss-$target_version.tar.gz";
+			$data = fetch_file_contents($tarball_url);
+
+			if (!$data) {
+				array_push($log, "Could not download distribution tarball ($tarball_url).");
+				$stop = true; break;
+			}
+
+			array_push($log, "Verifying tarball checksum...");
+
+			$test_md5sum = md5($data);
+
+			if ($test_md5sum != $target_md5sum) {
+				array_push($log, "Downloaded checksum doesn't match (got $test_md5sum, expected $target_md5sum).");
+				$stop = true; break;
+			}
+
+			$tmp_file = tempnam(sys_get_temp_dir(), 'tt-rss');
+			array_push($log, "Saving download to $tmp_file");
+
+			if (!file_put_contents($tmp_file, $data)) {
+				array_push($log, "Unable to save download.");
+				$stop = true; break;
+			}
+
+			$params["tmp_file"] = $tmp_file;
+
+			break;
+		case 3:
+			$tmp_file = $params["tmp_file"];
+			$target_version = $params["target_version"];
+
+			if (!chdir($parent_dir)) {
+				array_push($log, "Unable to change into parent directory.");
+				$stop = true; break;
+			}
+
+			$old_dir = tmpdirname($parent_dir, "tt-rss-old");
+
+			array_push($log, "Renaming tt-rss directory to ".basename($old_dir));
+			if (!rename($work_dir, $old_dir)) {
+				array_push($log, "Unable to rename tt-rss directory.");
+				$stop = true; break;
+			}
+
+			array_push($log, "Extracting tarball...");
+			system("tar zxf $tmp_file", $system_rc);
+
+			if ($system_rc != 0) {
+				array_push($log, "Error while extracting tarball (RC=$system_rc).");
+				$stop = true; break;
+			}
+
+			$target_dir = "$parent_dir/tt-rss-$target_version";
+
+			array_push($log, "Renaming target directory...");
+			if (!rename($target_dir, $work_dir)) {
+				array_push($log, "Unable to rename target directory.");
+				$stop = true; break;
+			}
+
+			if (!chdir($work_dir)) {
+				array_push($log, "Unable to change to work directory: $work_dir");
+				$stop = true; break;
+			}
+
+			array_push($log, "Copying config.php...");
+			if (!copy("$old_dir/config.php", "$work_dir/config.php")) {
+				array_push($log, "Unable to copy config.php to $work_dir.");
+				$stop = true; break;
+			}
+
+			array_push($log, "Cleaning up...");
+			unlink($tmp_file);
+
+			array_push($log, "Fixing permissions...");
+
+			$directories = array(
+				CACHE_DIR,
+				CACHE_DIR . "/htmlpurifier",
+				CACHE_DIR . "/export",
+				CACHE_DIR . "/images",
+				CACHE_DIR . "/magpie",
+				CACHE_DIR . "/simplepie",
+				ICONS_DIR,
+				LOCK_DIRECTORY);
+
+			foreach ($directories as $dir) {
+				array_push($log, "-> $dir");
+				chmod($dir, 0777);
+			}
+
+			array_push($log, "Upgrade completed.");
+			array_push($log, "Your old tt-rss directory is saved at $old_dir. ".
+				"Please migrate locally modified files (if any) and remove it.");
+			array_push($log, "You might need to re-enter current directory in shell to see new files.");
+
+			$stop = true;
+			break;
+		default:
+			$stop = true;
+		}
+
+		return array("step" => $step, "stop" => $stop, "params" => $params, "log" => $log);
+	}
+
+	function update_self_cli($link, $force = false) {
+		$step = 0;
+		$stop = false;
+		$params = array();
+
+		while (!$stop) {
+			$rc = $this->update_self_step($link, $step, $params, $force);
+
+			$params = $rc['params'];
+			$stop = $rc['stop'];
+
+			foreach ($rc['log'] as $line) {
+				_debug($line);
+			}
+			++$step;
+		}
+	}
+
+	function update_self($args) {
+		_debug("Warning: self-updating is experimental. Use at your own risk.");
+		_debug("Please backup your tt-rss directory before continuing. Your database will not be modified.");
+		_debug("Type 'yes' to continue.");
+
+		if (read_stdin() != 'yes')
+			exit;
+
+		$this->update_self_cli($link, in_array("-force", $args));
 	}
 
 	function get_prefs_js() {
@@ -64,9 +311,7 @@ class Updater extends Plugin {
 		$force = (bool) $_REQUEST["force"];
 
 		if (($_SESSION["access_level"] >= 10 || SINGLE_USER_MODE) && CHECK_FOR_NEW_VERSION) {
-			include "update_self.php";
-
-			print	json_encode(update_self_step($this->link, $step, $params, $force));
+			print	json_encode($this->update_self_step($this->link, $step, $params, $force));
 		}
 	}