ttrss/include/update_self.php

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PHP
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<?php
function update_self($link, $force = false) {
// __FILE__ is in include/ so we need to go one level up
$work_dir = dirname(dirname(__FILE__));
$parent_dir = dirname($work_dir);
if (!is_writable($work_dir) && !is_writable("$parent_dir")) {
_debug("Both current and parent directories should be writable as current user.");
exit;
}
if (!file_exists("$work_dir/config.php") || !file_exists("$work_dir/include/sanity_check.php")) {
_debug("Work directory $work_dir doesn't look like tt-rss installation.");
exit;
}
if (!is_writable(sys_get_temp_dir())) {
_debug("System temporary directory should be writable as current user.");
exit;
}
_debug("Checking for tar...");
$system_rc = 0;
system("tar --version >/dev/null", $system_rc);
if ($system_rc != 0) {
_debug("Could not run tar executable (RC=$system_rc).");
exit;
}
_debug("Checking for latest version...");
$version_info = json_decode(fetch_file_contents("http://tt-rss.org/version.php"),
true);
if (!is_array($version_info)) {
_debug("Unable to fetch version information.");
exit;
}
$target_version = $version_info["version"];
$target_dir = "$parent_dir/tt-rss-$target_version";
_debug("Target version: $target_version");
if (version_compare(VERSION, $target_version) != -1 && !$force) {
2012-08-23 18:02:29 +00:00
_debug("Your Tiny Tiny RSS installation is up to date.");
exit;
}
if (file_exists($target_dir)) {
_debug("Target directory $target_dir already exists.");
exit;
}
_debug("Downloading checksums...");
$md5sum_data = fetch_file_contents("http://tt-rss.org/download/md5sum.txt");
if (!$md5sum_data) {
_debug("Could not download checksums.");
exit;
}
$md5sum_data = explode("\n", $md5sum_data);
$tarball_url = "http://tt-rss.org/download/tt-rss-$target_version.tar.gz";
$data = fetch_file_contents($tarball_url);
if (!$data) {
_debug("Could not download distribution tarball ($tarball_url).");
exit;
}
_debug("Verifying tarball checksum...");
$target_md5sum = false;
foreach ($md5sum_data as $line) {
$pair = explode(" ", $line);
if ($pair[1] == "tt-rss-$target_version.tar.gz") {
$target_md5sum = $pair[0];
break;
}
}
if (!$target_md5sum) {
_debug("Unable to locate checksum for target version.");
exit;
}
$test_md5sum = md5($data);
if ($test_md5sum != $target_md5sum) {
_debug("Downloaded checksum doesn't match (got $test_md5sum, expected $target_md5sum).");
exit;
}
$tmp_file = tempnam(sys_get_temp_dir(), 'tt-rss');
_debug("Saving download to $tmp_file");
if (!file_put_contents($tmp_file, $data)) {
_debug("Unable to save download.");
exit;
}
if (!chdir($parent_dir)) {
_debug("Unable to change into parent directory.");
exit;
}
$old_dir = tmpdirname($parent_dir, "tt-rss-old");
_debug("Renaming tt-rss directory to ".basename($old_dir));
if (!rename($work_dir, $old_dir)) {
_debug("Unable to rename tt-rss directory.");
exit;
}
_debug("Extracting tarball...");
system("tar zxf $tmp_file", $system_rc);
if ($system_rc != 0) {
_debug("Error while extracting tarball (RC=$system_rc).");
exit;
}
_debug("Renaming target directory...");
if (!rename($target_dir, $work_dir)) {
_debug("Unable to rename target directory.");
exit;
}
chdir($work_dir);
_debug("Copying config.php...");
if (!copy("$old_dir/config.php", "$work_dir/config.php")) {
_debug("Unable to copy config.php to $work_dir.");
exit;
}
_debug("Cleaning up...");
unlink($tmp_file);
_debug("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) {
_debug("-> $dir");
chmod($dir, 0777);
}
_debug("Upgrade completed.");
_debug("Your old tt-rss directory is saved at $old_dir. ".
"Please migrate locally modified files (if any) and remove it.");
_debug("You might need to re-enter current directory in shell to see new files.");
}
?>