486 lines
17 KiB
PHP
486 lines
17 KiB
PHP
<?php
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class Config {
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private const _ENVVAR_PREFIX = "TTRSS_";
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const T_BOOL = 1;
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const T_STRING = 2;
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const T_INT = 3;
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// override defaults, defined below in _DEFAULTS[], via environment: DB_TYPE becomes TTRSS_DB_TYPE, etc
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const DB_TYPE = "DB_TYPE";
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const DB_HOST = "DB_HOST";
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const DB_USER = "DB_USER";
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const DB_NAME = "DB_NAME";
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const DB_PASS = "DB_PASS";
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const DB_PORT = "DB_PORT";
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const MYSQL_CHARSET = "MYSQL_CHARSET";
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const SELF_URL_PATH = "SELF_URL_PATH";
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const SINGLE_USER_MODE = "SINGLE_USER_MODE";
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const SIMPLE_UPDATE_MODE = "SIMPLE_UPDATE_MODE";
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const PHP_EXECUTABLE = "PHP_EXECUTABLE";
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const LOCK_DIRECTORY = "LOCK_DIRECTORY";
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const CACHE_DIR = "CACHE_DIR";
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const ICONS_DIR = "ICONS_DIR";
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const ICONS_URL = "ICONS_URL";
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const AUTH_AUTO_CREATE = "AUTH_AUTO_CREATE";
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const AUTH_AUTO_LOGIN = "AUTH_AUTO_LOGIN";
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const FORCE_ARTICLE_PURGE = "FORCE_ARTICLE_PURGE";
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const SESSION_COOKIE_LIFETIME = "SESSION_COOKIE_LIFETIME";
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const SMTP_FROM_NAME = "SMTP_FROM_NAME";
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const SMTP_FROM_ADDRESS = "SMTP_FROM_ADDRESS";
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const DIGEST_SUBJECT = "DIGEST_SUBJECT";
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const CHECK_FOR_UPDATES = "CHECK_FOR_UPDATES";
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const PLUGINS = "PLUGINS";
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const LOG_DESTINATION = "LOG_DESTINATION";
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const LOCAL_OVERRIDE_STYLESHEET = "LOCAL_OVERRIDE_STYLESHEET";
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const DAEMON_MAX_CHILD_RUNTIME = "DAEMON_MAX_CHILD_RUNTIME";
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const DAEMON_MAX_JOBS = "DAEMON_MAX_JOBS";
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const FEED_FETCH_TIMEOUT = "FEED_FETCH_TIMEOUT";
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const FEED_FETCH_NO_CACHE_TIMEOUT = "FEED_FETCH_NO_CACHE_TIMEOUT";
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const FILE_FETCH_TIMEOUT = "FILE_FETCH_TIMEOUT";
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const FILE_FETCH_CONNECT_TIMEOUT = "FILE_FETCH_CONNECT_TIMEOUT";
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const DAEMON_UPDATE_LOGIN_LIMIT = "DAEMON_UPDATE_LOGIN_LIMIT";
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const DAEMON_FEED_LIMIT = "DAEMON_FEED_LIMIT";
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const DAEMON_SLEEP_INTERVAL = "DAEMON_SLEEP_INTERVAL";
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const MAX_CACHE_FILE_SIZE = "MAX_CACHE_FILE_SIZE";
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const MAX_DOWNLOAD_FILE_SIZE = "MAX_DOWNLOAD_FILE_SIZE";
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const MAX_FAVICON_FILE_SIZE = "MAX_FAVICON_FILE_SIZE";
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const CACHE_MAX_DAYS = "CACHE_MAX_DAYS";
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const MAX_CONDITIONAL_INTERVAL = "MAX_CONDITIONAL_INTERVAL";
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const DAEMON_UNSUCCESSFUL_DAYS_LIMIT = "DAEMON_UNSUCCESSFUL_DAYS_LIMIT";
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const LOG_SENT_MAIL = "LOG_SENT_MAIL";
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const HTTP_PROXY = "HTTP_PROXY";
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const FORBID_PASSWORD_CHANGES = "FORBID_PASSWORD_CHANGES";
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const SESSION_NAME = "SESSION_NAME";
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private const _DEFAULTS = [
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Config::DB_TYPE => [ "pgsql", Config::T_STRING ],
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Config::DB_HOST => [ "db", Config::T_STRING ],
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Config::DB_USER => [ "", Config::T_STRING ],
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Config::DB_NAME => [ "", Config::T_STRING ],
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Config::DB_PASS => [ "", Config::T_STRING ],
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Config::DB_PORT => [ "5432", Config::T_STRING ],
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Config::MYSQL_CHARSET => [ "UTF8", Config::T_STRING ],
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Config::SELF_URL_PATH => [ "", Config::T_STRING ],
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Config::SINGLE_USER_MODE => [ "", Config::T_BOOL ],
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Config::SIMPLE_UPDATE_MODE => [ "", Config::T_BOOL ],
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Config::PHP_EXECUTABLE => [ "/usr/bin/php", Config::T_STRING ],
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Config::LOCK_DIRECTORY => [ "lock", Config::T_STRING ],
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Config::CACHE_DIR => [ "cache", Config::T_STRING ],
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Config::ICONS_DIR => [ "feed-icons", Config::T_STRING ],
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Config::ICONS_URL => [ "feed-icons", Config::T_STRING ],
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Config::AUTH_AUTO_CREATE => [ "true", Config::T_BOOL ],
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Config::AUTH_AUTO_LOGIN => [ "true", Config::T_BOOL ],
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Config::FORCE_ARTICLE_PURGE => [ 0, Config::T_INT ],
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Config::SESSION_COOKIE_LIFETIME => [ 86400, Config::T_INT ],
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Config::SMTP_FROM_NAME => [ "Tiny Tiny RSS", Config::T_STRING ],
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Config::SMTP_FROM_ADDRESS => [ "noreply@localhost", Config::T_STRING ],
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Config::DIGEST_SUBJECT => [ "[tt-rss] New headlines for last 24 hours",
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Config::T_STRING ],
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Config::CHECK_FOR_UPDATES => [ "true", Config::T_BOOL ],
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Config::PLUGINS => [ "auth_internal", Config::T_STRING ],
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Config::LOG_DESTINATION => [ "sql", Config::T_STRING ],
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Config::LOCAL_OVERRIDE_STYLESHEET => [ "local-overrides.css",
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Config::T_STRING ],
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Config::DAEMON_MAX_CHILD_RUNTIME => [ 1800, Config::T_STRING ],
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Config::DAEMON_MAX_JOBS => [ 2, Config::T_INT ],
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Config::FEED_FETCH_TIMEOUT => [ 45, Config::T_INT ],
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Config::FEED_FETCH_NO_CACHE_TIMEOUT => [ 15, Config::T_INT ],
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Config::FILE_FETCH_TIMEOUT => [ 45, Config::T_INT ],
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Config::FILE_FETCH_CONNECT_TIMEOUT => [ 15, Config::T_INT ],
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Config::DAEMON_UPDATE_LOGIN_LIMIT => [ 30, Config::T_INT ],
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Config::DAEMON_FEED_LIMIT => [ 500, Config::T_INT ],
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Config::DAEMON_SLEEP_INTERVAL => [ 120, Config::T_INT ],
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Config::MAX_CACHE_FILE_SIZE => [ 64*1024*1024, Config::T_INT ],
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Config::MAX_DOWNLOAD_FILE_SIZE => [ 16*1024*1024, Config::T_INT ],
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Config::MAX_FAVICON_FILE_SIZE => [ 1*1024*1024, Config::T_INT ],
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Config::CACHE_MAX_DAYS => [ 7, Config::T_INT ],
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Config::MAX_CONDITIONAL_INTERVAL => [ 3600*12, Config::T_INT ],
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Config::DAEMON_UNSUCCESSFUL_DAYS_LIMIT => [ 30, Config::T_INT ],
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Config::LOG_SENT_MAIL => [ "", Config::T_BOOL ],
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Config::HTTP_PROXY => [ "", Config::T_STRING ],
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Config::FORBID_PASSWORD_CHANGES => [ "", Config::T_BOOL ],
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Config::SESSION_NAME => [ "ttrss_sid", Config::T_STRING ],
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];
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private static $instance;
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private $params = [];
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private $schema_version = null;
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private $version = [];
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public static function get_instance() : Config {
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if (self::$instance == null)
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self::$instance = new self();
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return self::$instance;
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}
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private function __clone() {
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//
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}
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function __construct() {
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$ref = new ReflectionClass(get_class($this));
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foreach ($ref->getConstants() as $const => $cvalue) {
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if (isset($this::_DEFAULTS[$const])) {
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$override = getenv($this::_ENVVAR_PREFIX . $const);
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list ($defval, $deftype) = $this::_DEFAULTS[$const];
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$this->params[$cvalue] = [ self::cast_to(!empty($override) ? $override : $defval, $deftype), $deftype ];
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}
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}
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}
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/* package maintainers who don't use git: if version_static.txt exists in tt-rss root
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directory, its contents are displayed instead of git commit-based version, this could be generated
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based on source git tree commit used when creating the package */
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static function get_version(bool $as_string = true) {
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return self::get_instance()->_get_version($as_string);
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}
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private function _get_version(bool $as_string = true) {
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$root_dir = dirname(__DIR__);
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if (empty($this->version)) {
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$this->version["status"] = -1;
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if (PHP_OS === "Darwin") {
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$ttrss_version["version"] = "UNKNOWN (Unsupported, Darwin)";
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} else if (file_exists("$root_dir/version_static.txt")) {
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$this->version["version"] = trim(file_get_contents("$root_dir/version_static.txt")) . " (Unsupported)";
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} else if (is_dir("$root_dir/.git")) {
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$this->version = self::get_version_from_git($root_dir);
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if ($this->version["status"] != 0) {
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user_error("Unable to determine version: " . $this->version["version"], E_USER_WARNING);
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$this->version["version"] = "UNKNOWN (Unsupported, Git error)";
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}
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} else {
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$this->version["version"] = "UNKNOWN (Unsupported)";
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}
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}
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return $as_string ? $this->version["version"] : $this->version;
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}
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static function get_version_from_git(string $dir) {
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$descriptorspec = [
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1 => ["pipe", "w"], // STDOUT
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2 => ["pipe", "w"], // STDERR
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];
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$rv = [
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"status" => -1,
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"version" => "",
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"commit" => "",
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"timestamp" => 0,
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];
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$proc = proc_open("git --no-pager log --pretty=\"version-%ct-%h\" -n1 HEAD",
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$descriptorspec, $pipes, $dir);
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if (is_resource($proc)) {
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$stdout = trim(stream_get_contents($pipes[1]));
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$stderr = trim(stream_get_contents($pipes[2]));
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$status = proc_close($proc);
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$rv["status"] = $status;
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list($check, $timestamp, $commit) = explode("-", $stdout);
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if ($check == "version") {
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$rv["version"] = strftime("%y.%m", (int)$timestamp) . "-$commit";
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$rv["commit"] = $commit;
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$rv["timestamp"] = $timestamp;
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// proc_close() may return -1 even if command completed successfully
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// so if it looks like we got valid data, we ignore it
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if ($rv["status"] == -1)
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$rv["status"] = 0;
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} else {
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$rv["version"] = T_sprintf("Git error [RC=%d]: %s", $status, $stderr);
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}
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}
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return $rv;
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}
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static function get_schema_version(bool $nocache = false) {
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return self::get_instance()->_schema_version($nocache);
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}
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function _schema_version(bool $nocache = false) {
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if (empty($this->schema_version) || $nocache) {
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$row = Db::pdo()->query("SELECT schema_version FROM ttrss_version")->fetch();
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$this->schema_version = (int) $row["schema_version"];
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}
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return $this->schema_version;
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}
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static function cast_to(string $value, int $type_hint) {
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switch ($type_hint) {
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case self::T_BOOL:
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return sql_bool_to_bool($value);
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case self::T_INT:
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return (int) $value;
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default:
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return $value;
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}
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}
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private function _get(string $param) {
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list ($value, $type_hint) = $this->params[$param];
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return $this->cast_to($value, $type_hint);
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}
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private function _add(string $param, string $default, int $type_hint) {
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$override = getenv($this::_ENVVAR_PREFIX . $param);
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$this->params[$param] = [ self::cast_to(!empty($override) ? $override : $default, $type_hint), $type_hint ];
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}
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static function add(string $param, string $default, int $type_hint = Config::T_STRING) {
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$instance = self::get_instance();
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return $instance->_add($param, $default, $type_hint);
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}
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static function get(string $param) {
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$instance = self::get_instance();
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return $instance->_get($param);
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}
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/** this returns Config::SELF_URL_PATH sans trailing slash */
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static function get_self_url() : string {
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$self_url_path = self::get(Config::SELF_URL_PATH);
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if (substr($self_url_path, -1) === "/") {
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return substr($self_url_path, 0, -1);
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} else {
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return $self_url_path;
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}
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}
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static function is_server_https() : bool {
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return (!empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] != 'off')) ||
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(!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https');
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}
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/** generates reference self_url_path (no trailing slash) */
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static function make_self_url() : string {
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$proto = self::is_server_https() ? 'https' : 'http';
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$self_url_path = $proto . '://' . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
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$self_url_path = preg_replace("/\w+\.php$/", "", $self_url_path);
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if (substr($self_url_path, -1) === "/") {
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return substr($self_url_path, 0, -1);
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} else {
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return $self_url_path;
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}
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}
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/* sanity check stuff */
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private static function check_mysql_tables() {
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$pdo = Db::pdo();
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$sth = $pdo->prepare("SELECT engine, table_name FROM information_schema.tables WHERE
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table_schema = ? AND table_name LIKE 'ttrss_%' AND engine != 'InnoDB'");
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$sth->execute([self::get(Config::DB_NAME)]);
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$bad_tables = [];
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while ($line = $sth->fetch()) {
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array_push($bad_tables, $line);
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}
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return $bad_tables;
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}
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static function sanity_check() {
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/*
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we don't actually need the DB object right now but some checks below might use ORM which won't be initialized
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because it is set up in the Db constructor, which is why it's a good idea to invoke it as early as possible
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it is a bit of a hack, maybe ORM should be initialized somewhere else (functions.php?)
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*/
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$pdo = Db::pdo();
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$errors = array();
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if (strpos(self::get(Config::PLUGINS), "auth_") === false) {
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array_push($errors, "Please enable at least one authentication module via PLUGINS");
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}
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if (function_exists('posix_getuid') && posix_getuid() == 0) {
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array_push($errors, "Please don't run this script as root.");
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}
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if (version_compare(PHP_VERSION, '7.1.0', '<')) {
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array_push($errors, "PHP version 7.1.0 or newer required. You're using " . PHP_VERSION . ".");
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}
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if (!class_exists("UConverter")) {
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array_push($errors, "PHP UConverter class is missing, it's provided by the Internationalization (intl) module.");
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}
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if (!is_writable(self::get(Config::CACHE_DIR) . "/images")) {
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array_push($errors, "Image cache is not writable (chmod -R 777 ".self::get(Config::CACHE_DIR)."/images)");
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}
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if (!is_writable(self::get(Config::CACHE_DIR) . "/upload")) {
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array_push($errors, "Upload cache is not writable (chmod -R 777 ".self::get(Config::CACHE_DIR)."/upload)");
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}
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if (!is_writable(self::get(Config::CACHE_DIR) . "/export")) {
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array_push($errors, "Data export cache is not writable (chmod -R 777 ".self::get(Config::CACHE_DIR)."/export)");
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}
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if (self::get(Config::SINGLE_USER_MODE) && class_exists("PDO")) {
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if (UserHelper::get_login_by_id(1) != "admin") {
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array_push($errors, "SINGLE_USER_MODE is enabled but default admin account (ID: 1) is not found.");
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}
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}
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if (php_sapi_name() != "cli") {
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$ref_self_url_path = self::make_self_url();
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if ($ref_self_url_path) {
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$ref_self_url_path = preg_replace("/\w+\.php$/", "", $ref_self_url_path);
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}
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if (self::get_self_url() == "http://example.org/tt-rss") {
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$hint = $ref_self_url_path ? "(possible value: <b>$ref_self_url_path</b>)" : "";
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array_push($errors,
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"Please set SELF_URL_PATH to the correct value for your server: $hint");
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}
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if (self::get_self_url() != $ref_self_url_path) {
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array_push($errors,
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"Please set SELF_URL_PATH to the correct value detected for your server: <b>$ref_self_url_path</b> (you're using: <b>" . self::get_self_url() . "</b>)");
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}
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}
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if (!is_writable(self::get(Config::ICONS_DIR))) {
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array_push($errors, "ICONS_DIR defined in config.php is not writable (chmod -R 777 ".self::get(Config::ICONS_DIR).").\n");
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}
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if (!is_writable(self::get(Config::LOCK_DIRECTORY))) {
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array_push($errors, "LOCK_DIRECTORY is not writable (chmod -R 777 ".self::get(Config::LOCK_DIRECTORY).").\n");
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}
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if (!function_exists("curl_init") && !ini_get("allow_url_fopen")) {
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array_push($errors, "PHP configuration option allow_url_fopen is disabled, and CURL functions are not present. Either enable allow_url_fopen or install PHP extension for CURL.");
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}
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if (!function_exists("json_encode")) {
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array_push($errors, "PHP support for JSON is required, but was not found.");
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}
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if (!class_exists("PDO")) {
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array_push($errors, "PHP support for PDO is required but was not found.");
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}
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if (!function_exists("mb_strlen")) {
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array_push($errors, "PHP support for mbstring functions is required but was not found.");
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}
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if (!function_exists("hash")) {
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array_push($errors, "PHP support for hash() function is required but was not found.");
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}
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if (ini_get("safe_mode")) {
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array_push($errors, "PHP safe mode setting is obsolete and not supported by tt-rss.");
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}
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if (!function_exists("mime_content_type")) {
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array_push($errors, "PHP function mime_content_type() is missing, try enabling fileinfo module.");
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}
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if (!class_exists("DOMDocument")) {
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array_push($errors, "PHP support for DOMDocument is required, but was not found.");
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}
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if (self::get(Config::DB_TYPE) == "mysql") {
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$bad_tables = self::check_mysql_tables();
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if (count($bad_tables) > 0) {
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$bad_tables_fmt = [];
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foreach ($bad_tables as $bt) {
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array_push($bad_tables_fmt, sprintf("%s (%s)", $bt['table_name'], $bt['engine']));
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}
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$msg = "<p>The following tables use an unsupported MySQL engine: <b>" .
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implode(", ", $bad_tables_fmt) . "</b>.</p>";
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$msg .= "<p>The only supported engine on MySQL is InnoDB. MyISAM lacks functionality to run
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tt-rss.
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Please backup your data (via OPML) and re-import the schema before continuing.</p>
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<p><b>WARNING: importing the schema would mean LOSS OF ALL YOUR DATA.</b></p>";
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array_push($errors, $msg);
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}
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}
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if (count($errors) > 0 && php_sapi_name() != "cli") { ?>
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<!DOCTYPE html>
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<html>
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<head>
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<title>Startup failed</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link rel="stylesheet" type="text/css" href="themes/light.css">
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</head>
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<body class="sanity_failed flat ttrss_utility">
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<div class="content">
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<h1>Startup failed</h1>
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<p>Please fix errors indicated by the following messages:</p>
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<?php foreach ($errors as $error) { echo self::format_error($error); } ?>
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<p>You might want to check tt-rss <a target="_blank" href="https://tt-rss.org/wiki.php">wiki</a> or the
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<a target="_blank" href="https://community.tt-rss.org/">forums</a> for more information. Please search the forums before creating new topic
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for your question.</p>
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</div>
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</body>
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</html>
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<?php
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die;
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} else if (count($errors) > 0) {
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echo "Please fix errors indicated by the following messages:\n\n";
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foreach ($errors as $error) {
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echo " * " . strip_tags($error)."\n";
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}
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echo "\nYou might want to check tt-rss wiki or the forums for more information.\n";
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echo "Please search the forums before creating new topic for your question.\n";
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exit(1);
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}
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}
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private static function format_error($msg) {
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return "<div class=\"alert alert-danger\">$msg</div>";
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}
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}
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