include/sanity_check.php

   1 <?php
   2         /* WARNING!
   3          *
   4          * If you modify this file, you are ON YOUR OWN!
   5          *
   6          * Believe it or not, all of the checks below are required to succeed for
   7          * tt-rss to actually function properly.
   8          *
   9          * If you think you have a better idea about what is or isn't required, feel
  10          * free to modify the file, note though that you are therefore automatically
  11          * disqualified from any further support by official channels, e.g. tt-rss.org
  12          * issue tracker or the forums.
  13          *
  14          * If you come crying when stuff inevitably breaks, you will be mocked and told
  15          * to get out. */
  16
  17         function make_self_url_path() {
  18                 $proto = is_server_https() ? 'https' : 'http';
  19                 $url_path = $proto . '://' . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
  20
  21                 return $url_path;
  22         }
  23
  24         /**
  25          * @SuppressWarnings(PHPMD.UnusedLocalVariable)
  26          */
  27         function initial_sanity_check() {
  28
  29                 $errors = array();
  30
  31                 if (!file_exists("config.php")) {
  32                         array_push($errors, "Configuration file not found. Looks like you forgot to copy config.php-dist to config.php and edit it.");
  33                 } else {
  34
  35                         require_once "sanity_config.php";
  36
  37                         if (file_exists("install") && !file_exists("config.php")) {
  38                                 array_push($errors, "Please copy config.php-dist to config.php or run the installer in install/");
  39                         }
  40
  41                         if (strpos(PLUGINS, "auth_") === FALSE) {
  42                                 array_push($errors, "Please enable at least one authentication module via PLUGINS constant in config.php");
  43                         }
  44
  45                         if (function_exists('posix_getuid') && posix_getuid() == 0) {
  46                                 array_push($errors, "Please don't run this script as root.");
  47                         }
  48
  49                         if (version_compare(PHP_VERSION, '5.6.0', '<')) {
  50                                 array_push($errors, "PHP version 5.6.0 or newer required. You're using " . PHP_VERSION . ".");
  51                         }
  52
  53                         if (CONFIG_VERSION != EXPECTED_CONFIG_VERSION) {
  54                                 array_push($errors, "Configuration file (config.php) has incorrect version. Update it with new options from config.php-dist and set CONFIG_VERSION to the correct value.");
  55                         }
  56
  57                         if (!is_writable(CACHE_DIR . "/images")) {
  58                                 array_push($errors, "Image cache is not writable (chmod -R 777 ".CACHE_DIR."/images)");
  59                         }
  60
  61                         if (!is_writable(CACHE_DIR . "/upload")) {
  62                                 array_push($errors, "Upload cache is not writable (chmod -R 777 ".CACHE_DIR."/upload)");
  63                         }
  64
  65                         if (!is_writable(CACHE_DIR . "/export")) {
  66                                 array_push($errors, "Data export cache is not writable (chmod -R 777 ".CACHE_DIR."/export)");
  67                         }
  68
  69                         if (!is_writable(CACHE_DIR . "/js")) {
  70                                 array_push($errors, "Javascript cache is not writable (chmod -R 777 ".CACHE_DIR."/js)");
  71                         }
  72
  73                         if (GENERATED_CONFIG_CHECK != EXPECTED_CONFIG_VERSION) {
  74                                 array_push($errors,
  75                                         "Configuration option checker sanity_config.php is outdated, please recreate it using ./utils/regen_config_checks.sh");
  76                         }
  77
  78                         foreach ($required_defines as $d) {
  79                                 if (!defined($d)) {
  80                                         array_push($errors,
  81                                                 "Required configuration file parameter $d is not defined in config.php. You might need to copy it from config.php-dist.");
  82                                 }
  83                         }
  84
  85                         if (SINGLE_USER_MODE && class_exists("PDO")) {
  86                             $pdo = DB::pdo();
  87
  88                                 $res = $pdo->query("SELECT id FROM ttrss_users WHERE id = 1");
  89
  90                                 if (!$res->fetch()) {
  91                                         array_push($errors, "SINGLE_USER_MODE is enabled in config.php but default admin account is not found.");
  92                                 }
  93                         }
  94
  95                         $ref_self_url_path = make_self_url_path();
  96                         $ref_self_url_path = preg_replace("/\w+\.php$/", "", $ref_self_url_path);
  97
  98                         if (SELF_URL_PATH == "http://example.org/tt-rss/") {
  99                                 array_push($errors,
 100                                                 "Please set SELF_URL_PATH to the correct value for your server (possible value: <b>$ref_self_url_path</b>)");
 101                         }
 102
 103                         if (isset($_SERVER["HTTP_HOST"]) &&
 104                                 (!defined('_SKIP_SELF_URL_PATH_CHECKS') || !_SKIP_SELF_URL_PATH_CHECKS) &&
 105                                 SELF_URL_PATH != $ref_self_url_path && SELF_URL_PATH != mb_substr($ref_self_url_path, 0, mb_strlen($ref_self_url_path)-1)) {
 106                                 array_push($errors,
 107                                         "Please set SELF_URL_PATH to the correct value detected for your server: <b>$ref_self_url_path</b>");
 108                         }
 109
 110                         if (!is_writable(ICONS_DIR)) {
 111                                 array_push($errors, "ICONS_DIR defined in config.php is not writable (chmod -R 777 ".ICONS_DIR.").\n");
 112                         }
 113
 114                         if (!is_writable(LOCK_DIRECTORY)) {
 115                                 array_push($errors, "LOCK_DIRECTORY defined in config.php is not writable (chmod -R 777 ".LOCK_DIRECTORY.").\n");
 116                         }
 117
 118                         if (!function_exists("curl_init") && !ini_get("allow_url_fopen")) {
 119                                 array_push($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.");
 120                         }
 121
 122                         if (!function_exists("json_encode")) {
 123                                 array_push($errors, "PHP support for JSON is required, but was not found.");
 124                         }
 125
 126                         if (DB_TYPE == "mysql" && !function_exists("mysqli_connect")) {
 127                                 array_push($errors, "PHP support for MySQL is required for configured DB_TYPE in config.php.");
 128                         }
 129
 130                         if (DB_TYPE == "pgsql" && !function_exists("pg_connect")) {
 131                                 array_push($errors, "PHP support for PostgreSQL is required for configured DB_TYPE in config.php");
 132                         }
 133
 134                         if (!class_exists("PDO")) {
 135                                 array_push($errors, "PHP support for PDO is required but was not found.");
 136                         }
 137
 138                         if (!function_exists("mb_strlen")) {
 139                                 array_push($errors, "PHP support for mbstring functions is required but was not found.");
 140                         }
 141
 142                         if (!function_exists("hash")) {
 143                                 array_push($errors, "PHP support for hash() function is required but was not found.");
 144                         }
 145
 146                         if (ini_get("safe_mode")) {
 147                                 array_push($errors, "PHP safe mode setting is obsolete and not supported by tt-rss.");
 148                         }
 149
 150                         if (!function_exists("mime_content_type")) {
 151                                 array_push($errors, "PHP function mime_content_type() is missing, try enabling fileinfo module.");
 152                         }
 153
 154                         if (!class_exists("DOMDocument")) {
 155                                 array_push($errors, "PHP support for DOMDocument is required, but was not found.");
 156                         }
 157
 158                         if (DB_TYPE == "mysql") {
 159                                 $bad_tables = check_mysql_tables();
 160
 161                                 if (count($bad_tables) > 0) {
 162                                         $bad_tables_fmt = [];
 163
 164                                         foreach ($bad_tables as $bt) {
 165                                                 array_push($bad_tables_fmt, sprintf("%s (%s)", $bt['table_name'], $bt['engine']));
 166                                         }
 167
 168                                         $msg = "<p>The following tables use an unsupported MySQL engine: <b>" .
 169                                                 implode(", ", $bad_tables_fmt) . "</b>.</p>";
 170
 171                                         $msg .= "<p>The only supported engine on MySQL is InnoDB. MyISAM lacks functionality to run
 172                                                 tt-rss.
 173                                                 Please backup your data (via OPML) and re-import the schema before continuing.</p>
 174                                                 <p><b>WARNING: importing the schema would mean LOSS OF ALL YOUR DATA.</b></p>";
 175
 176
 177                                         array_push($errors, $msg);
 178                                 }
 179                         }
 180                 }
 181
 182                 if (count($errors) > 0 && $_SERVER['REQUEST_URI']) { ?>
 183                         <html>
 184                         <head>
 185                         <title>Startup failed</title>
 186                                 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 187                                 <link rel="stylesheet" type="text/css" href="css/default.css">
 188                         </head>
 189                 <body class='sanity_failed claro ttrss_utility'>
 190                 <div class="floatingLogo"><img src="images/logo_small.png"></div>
 191                         <div class="content">
 192
 193                         <h1>Startup failed</h1>
 194
 195                         <p>Tiny Tiny RSS was unable to start properly. This usually means a misconfiguration or an incomplete upgrade. Please fix
 196                         errors indicated by the following messages:</p>
 197
 198                         <?php foreach ($errors as $error) { echo format_error($error); } ?>
 199
 200                         <p>You might want to check tt-rss <a href="http://tt-rss.org/wiki">wiki</a> or the
 201                                 <a href="http://tt-rss.org/forum">forums</a> for more information. Please search the forums before creating new topic
 202                                 for your question.</p>
 203
 204                 </div>
 205                 </body>
 206                 </html>
 207
 208                 <?php
 209                         die;
 210                 } else if (count($errors) > 0) {
 211                         echo "Tiny Tiny RSS was unable to start properly. This usually means a misconfiguration or an incomplete upgrade.\n";
 212                         echo "Please fix errors indicated by the following messages:\n\n";
 213
 214                         foreach ($errors as $error) {
 215                                 echo " * $error\n";
 216                         }
 217
 218                         echo "\nYou might want to check tt-rss wiki or the forums for more information.\n";
 219                         echo "Please search the forums before creating new topic for your question.\n";
 220
 221                         exit(-1);
 222                 }
 223         }
 224
 225         initial_sanity_check();
 226
 227 ?>