include/sanity_check.php

   1 <?php
   2         /*
   3          * WARNING!
   4          *
   5          * If you modify this file, you are ON YOUR OWN!
   6          *
   7          * Believe it or not, all of the checks below are required to succeed for
   8          * tt-rss to actually function properly.
   9          *
  10          * If you think you have a better idea about what is or isn't required, feel
  11          * free to modify the file, note though that you are therefore automatically
  12          * disqualified from any further support by official channels, e.g. tt-rss.org
  13          * issue tracker or the forums.
  14          *
  15          * If you come crying when stuff inevitably breaks, you will be mocked and told
  16          * to get out. */
  17
  18         function make_self_url_path() {
  19                 $url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
  20
  21                 return $url_path;
  22         }
  23
  24         function initial_sanity_check($link) {
  25
  26                 $errors = array();
  27
  28                 if (!file_exists("config.php")) {
  29                         array_push($errors, "Configuration file not found. Looks like you forgot to copy config.php-dist to config.php and edit it.");
  30                 } else {
  31
  32                         require_once "sanity_config.php";
  33
  34                         if (file_exists("install") && !file_exists("config.php")) {
  35                                 array_push($errors, "Please copy config.php-dist to config.php or run the installer in install/");
  36                         }
  37
  38                         if (strpos(PLUGINS, "auth_") === FALSE) {
  39                                 array_push($errors, "Please enable at least one authentication module via PLUGINS constant in config.php");
  40                         }
  41
  42                         if (function_exists('posix_getuid') && posix_getuid() == 0) {
  43                                 array_push($errors, "Please don't run this script as root.");
  44                         }
  45
  46                         if (version_compare(PHP_VERSION, '5.3.0', '<')) {
  47                                 array_push($errors, "PHP version 5.3.0 or newer required.");
  48                         }
  49
  50                         if (CONFIG_VERSION != EXPECTED_CONFIG_VERSION) {
  51                                 array_push($errors, "Configuration file (config.php) has incorrect version. Update it with new options from config.php-dist and set CONFIG_VERSION to the correct value.");
  52                         }
  53
  54                         if (!is_writable(CACHE_DIR . "/images")) {
  55                                 array_push($errors, "Image cache is not writable (chmod -R 777 ".CACHE_DIR."/images)");
  56                         }
  57
  58                         if (!is_writable(CACHE_DIR . "/export")) {
  59                                 array_push($errors, "Data export cache is not writable (chmod -R 777 ".CACHE_DIR."/export)");
  60                         }
  61
  62                         if (!is_writable(CACHE_DIR . "/js")) {
  63                                 array_push($errors, "Javascript cache is not writable (chmod -R 777 ".CACHE_DIR."/js)");
  64                         }
  65
  66                         if (GENERATED_CONFIG_CHECK != EXPECTED_CONFIG_VERSION) {
  67                                 array_push($errors,
  68                                         "Configuration option checker sanity_config.php is outdated, please recreate it using ./utils/regen_config_checks.sh");
  69                         }
  70
  71                         foreach ($requred_defines as $d) {
  72                                 if (!defined($d)) {
  73                                         array_push($errors,
  74                                                 "Required configuration file parameter $d is not defined in config.php. You might need to copy it from config.php-dist.");
  75                                 }
  76                         }
  77
  78                         if (SINGLE_USER_MODE) {
  79                                 $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
  80
  81                                 if ($link) {
  82                                         $result = db_query($link, "SELECT id FROM ttrss_users WHERE id = 1");
  83
  84                                         if (db_num_rows($result) != 1) {
  85                                                 array_push($errors, "SINGLE_USER_MODE is enabled in config.php but default admin account is not found.");
  86                                         }
  87                                 }
  88                         }
  89
  90                         if (SELF_URL_PATH == "http://yourserver/tt-rss/") {
  91                                 $urlpath = preg_replace("/\w+\.php$/", "", make_self_url_path());
  92
  93                                 array_push($errors,
  94                                                 "Please set SELF_URL_PATH to the correct value for your server (possible value: <b>$urlpath</b>)");
  95                         }
  96
  97                         if (!is_writable(ICONS_DIR)) {
  98                                 array_push($errors, "ICONS_DIR defined in config.php is not writable (chmod -R 777 ".ICONS_DIR.").\n");
  99                         }
 100
 101                         if (!is_writable(LOCK_DIRECTORY)) {
 102                                 array_push($errors, "LOCK_DIRECTORY defined in config.php is not writable (chmod -R 777 ".LOCK_DIRECTORY.").\n");
 103                         }
 104
 105                         if (ini_get("open_basedir")) {
 106                                 array_push($errors, "PHP configuration option open_basedir is not supported. Please disable this in PHP settings file (php.ini).");
 107                         }
 108
 109                         if (!function_exists("curl_init") && !ini_get("allow_url_fopen")) {
 110                                 array_push($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.");
 111                         }
 112
 113                         if (!function_exists("json_encode")) {
 114                                 array_push($errors, "PHP support for JSON is required, but was not found.");
 115                         }
 116
 117                         if (DB_TYPE == "mysql" && !function_exists("mysql_connect")) {
 118                                 array_push($errors, "PHP support for MySQL is required for configured DB_TYPE in config.php.");
 119                         }
 120
 121                         if (DB_TYPE == "pgsql" && !function_exists("pg_connect")) {
 122                                 array_push($errors, "PHP support for PostgreSQL is required for configured DB_TYPE in config.php");
 123                         }
 124
 125                         if (!function_exists("mb_strlen")) {
 126                                 array_push($errors, "PHP support for mbstring functions is required but was not found.");
 127                         }
 128
 129                         if (!function_exists("hash")) {
 130                                 array_push($errors, "PHP support for hash() function is required but was not found.");
 131                         }
 132
 133                         if (!function_exists("ctype_lower")) {
 134                                 array_push($errors, "PHP support for ctype functions are required by HTMLPurifier.");
 135                         }
 136
 137                         if (!function_exists("iconv")) {
 138                                 array_push($errors, "PHP support for iconv is required to handle multiple charsets.");
 139                         }
 140
 141                         /* if (ini_get("safe_mode")) {
 142                                 array_push($errors, "PHP safe mode setting is not supported.");
 143                         } */
 144
 145                         if ((PUBSUBHUBBUB_HUB || PUBSUBHUBBUB_ENABLED) && !function_exists("curl_init")) {
 146                                 array_push($errors, "PHP support for CURL is required for PubSubHubbub.");
 147                         }
 148
 149                         if (!class_exists("DOMDocument")) {
 150                                 array_push($errors, "PHP support for DOMDocument is required, but was not found.");
 151                         }
 152                 }
 153
 154                 if (count($errors) > 0 && $_SERVER['REQUEST_URI']) { ?>
 155                         <html>
 156                         <head>
 157                         <title>Startup failed</title>
 158                                 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 159                                 <link rel="stylesheet" type="text/css" href="utility.css">
 160                         </head>
 161                 <body>
 162                 <div class="floatingLogo"><img src="images/logo_small.png"></div>
 163                         <div class="content">
 164
 165                         <h1>Startup failed</h1>
 166
 167                         <p>Tiny Tiny RSS was unable to start properly. This usually means a misconfiguration or an incomplete upgrade. Please fix
 168                         errors indicated by the following messages:</p>
 169
 170                         <?php foreach ($errors as $error) { echo format_error($error); } ?>
 171
 172                         <p>You might want to check tt-rss <a href="http://tt-rss.org/wiki">wiki</a> or the
 173                                 <a href="http://tt-rss.org/forum">forums</a> for more information. Please search the forums before creating new topic
 174                                 for your question.</p>
 175
 176                 </div>
 177                 </body>
 178                 </html>
 179
 180                 <?php
 181                         die;
 182                 } else if (count($errors) > 0) {
 183                         echo "Tiny Tiny RSS was unable to start properly. This usually means a misconfiguration or an incomplete upgrade.\n";
 184                         echo "Please fix errors indicated by the following messages:\n\n";
 185
 186                         foreach ($errors as $error) {
 187                                 echo " * $error\n";
 188                         }
 189
 190                         echo "\nYou might want to check tt-rss wiki or the forums for more information.\n";
 191                         echo "Please search the forums before creating new topic for your question.\n";
 192
 193                         exit(-1);
 194                 }
 195         }
 196
 197         initial_sanity_check($link);
 198
 199 ?>