include/update_self.php

   1 <?php
   2         function update_self_step($link, $step, $params, $force = false) {
   3                 // __FILE__ is in include/ so we need to go one level up
   4                 $work_dir = dirname(dirname(__FILE__));
   5                 $parent_dir = dirname($work_dir);
   6
   7                 if (!chdir($work_dir)) {
   8                         array_push($log, "Unable to change to work directory: $work_dir");
   9                         $stop = true; break;
  10                 }
  11
  12                 $stop = false;
  13                 $log = array();
  14                 if (!is_array($params)) $params = array();
  15
  16                 switch ($step) {
  17                 case 0:
  18                         array_push($log, "Work directory: $work_dir");
  19
  20                         if (!is_writable($work_dir) && !is_writable("$parent_dir")) {
  21                                 $user = posix_getpwuid(posix_geteuid());
  22                                 $user = $user["name"];
  23                                 array_push($log, "Both tt-rss and parent directories should be writable as current user ($user).");
  24                                 $stop = true; break;
  25                         }
  26
  27                         if (!file_exists("$work_dir/config.php") || !file_exists("$work_dir/include/sanity_check.php")) {
  28                                 array_push($log, "Work directory $work_dir doesn't look like tt-rss installation.");
  29                                 $stop = true; break;
  30                         }
  31
  32                         if (!is_writable(sys_get_temp_dir())) {
  33                                 array_push($log, "System temporary directory should be writable as current user.");
  34                                 $stop = true; break;
  35                         }
  36
  37                         array_push($log, "Checking for tar...");
  38
  39                         $system_rc = 0;
  40                         system("tar --version >/dev/null", $system_rc);
  41
  42                         if ($system_rc != 0) {
  43                                 array_push($log, "Could not run tar executable (RC=$system_rc).");
  44                                 $stop = true; break;
  45                         }
  46
  47                         array_push($log, "Checking for latest version...");
  48
  49                         $version_info = json_decode(fetch_file_contents("http://tt-rss.org/version.php"),
  50                                 true);
  51
  52                         if (!is_array($version_info)) {
  53                                 array_push($log, "Unable to fetch version information.");
  54                                 $stop = true; break;
  55                         }
  56
  57                         $target_version = $version_info["version"];
  58                         $target_dir = "$parent_dir/tt-rss-$target_version";
  59
  60                         array_push($log, "Target version: $target_version");
  61                         $params["target_version"] = $target_version;
  62
  63                         if (version_compare(VERSION, $target_version) != -1 && !$force) {
  64                                 array_push($log, "Your Tiny Tiny RSS installation is up to date.");
  65                                 $stop = true; break;
  66                         }
  67
  68                         if (file_exists($target_dir)) {
  69                                 array_push($log, "Target directory $target_dir already exists.");
  70                                 $stop = true; break;
  71                         }
  72
  73                         break;
  74                 case 1:
  75                         $target_version = $params["target_version"];
  76
  77                         array_push($log, "Downloading checksums...");
  78                         $md5sum_data = fetch_file_contents("http://tt-rss.org/download/md5sum.txt");
  79
  80                         if (!$md5sum_data) {
  81                                 array_push($log, "Could not download checksums.");
  82                                 $stop = true; break;
  83                         }
  84
  85                         $md5sum_data = explode("\n", $md5sum_data);
  86
  87                         foreach ($md5sum_data as $line) {
  88                                 $pair = explode("  ", $line);
  89
  90                                 if ($pair[1] == "tt-rss-$target_version.tar.gz") {
  91                                         $target_md5sum = $pair[0];
  92                                         break;
  93                                 }
  94                         }
  95
  96                         if (!$target_md5sum) {
  97                                 array_push($log, "Unable to locate checksum for target version.");
  98                                 $stop = true; break;
  99                         }
 100
 101                         $params["target_md5sum"] = $target_md5sum;
 102
 103                         break;
 104                 case 2:
 105                         $target_version = $params["target_version"];
 106                         $target_md5sum = $params["target_md5sum"];
 107
 108                         array_push($log, "Downloading distribution tarball...");
 109
 110                         $tarball_url = "http://tt-rss.org/download/tt-rss-$target_version.tar.gz";
 111                         $data = fetch_file_contents($tarball_url);
 112
 113                         if (!$data) {
 114                                 array_push($log, "Could not download distribution tarball ($tarball_url).");
 115                                 $stop = true; break;
 116                         }
 117
 118                         array_push($log, "Verifying tarball checksum...");
 119
 120                         $test_md5sum = md5($data);
 121
 122                         if ($test_md5sum != $target_md5sum) {
 123                                 array_push($log, "Downloaded checksum doesn't match (got $test_md5sum, expected $target_md5sum).");
 124                                 $stop = true; break;
 125                         }
 126
 127                         $tmp_file = tempnam(sys_get_temp_dir(), 'tt-rss');
 128                         array_push($log, "Saving download to $tmp_file");
 129
 130                         if (!file_put_contents($tmp_file, $data)) {
 131                                 array_push($log, "Unable to save download.");
 132                                 $stop = true; break;
 133                         }
 134
 135                         $params["tmp_file"] = $tmp_file;
 136
 137                         break;
 138                 case 3:
 139                         $tmp_file = $params["tmp_file"];
 140                         $target_version = $params["target_version"];
 141
 142                         if (!chdir($parent_dir)) {
 143                                 array_push($log, "Unable to change into parent directory.");
 144                                 $stop = true; break;
 145                         }
 146
 147                         $old_dir = tmpdirname($parent_dir, "tt-rss-old");
 148
 149                         array_push($log, "Renaming tt-rss directory to ".basename($old_dir));
 150                         if (!rename($work_dir, $old_dir)) {
 151                                 array_push($log, "Unable to rename tt-rss directory.");
 152                                 $stop = true; break;
 153                         }
 154
 155                         array_push($log, "Extracting tarball...");
 156                         system("tar zxf $tmp_file", $system_rc);
 157
 158                         if ($system_rc != 0) {
 159                                 array_push($log, "Error while extracting tarball (RC=$system_rc).");
 160                                 $stop = true; break;
 161                         }
 162
 163                         $target_dir = "$parent_dir/tt-rss-$target_version";
 164
 165                         array_push($log, "Renaming target directory...");
 166                         if (!rename($target_dir, $work_dir)) {
 167                                 array_push($log, "Unable to rename target directory.");
 168                                 $stop = true; break;
 169                         }
 170
 171                         if (!chdir($work_dir)) {
 172                                 array_push($log, "Unable to change to work directory: $work_dir");
 173                                 $stop = true; break;
 174                         }
 175
 176                         array_push($log, "Copying config.php...");
 177                         if (!copy("$old_dir/config.php", "$work_dir/config.php")) {
 178                                 array_push($log, "Unable to copy config.php to $work_dir.");
 179                                 $stop = true; break;
 180                         }
 181
 182                         array_push($log, "Cleaning up...");
 183                         unlink($tmp_file);
 184
 185                         array_push($log, "Fixing permissions...");
 186
 187                         $directories = array(
 188                                 CACHE_DIR,
 189                                 CACHE_DIR . "/htmlpurifier",
 190                                 CACHE_DIR . "/export",
 191                                 CACHE_DIR . "/images",
 192                                 CACHE_DIR . "/magpie",
 193                                 CACHE_DIR . "/simplepie",
 194                                 ICONS_DIR,
 195                                 LOCK_DIRECTORY);
 196
 197                         foreach ($directories as $dir) {
 198                                 array_push($log, "-> $dir");
 199                                 chmod($dir, 0777);
 200                         }
 201
 202                         array_push($log, "Upgrade completed.");
 203                         array_push($log, "Your old tt-rss directory is saved at $old_dir. ".
 204                                 "Please migrate locally modified files (if any) and remove it.");
 205                         array_push($log, "You might need to re-enter current directory in shell to see new files.");
 206
 207                         $stop = true;
 208                         break;
 209                 default:
 210                         $stop = true;
 211                 }
 212
 213                 return array("step" => $step, "stop" => $stop, "params" => $params, "log" => $log);
 214         }
 215
 216
 217         function update_self($link, $force = false) {
 218                 $step = 0;
 219                 $stop = false;
 220                 $params = array();
 221
 222                 while (!$stop) {
 223                         $rc = update_self_step($link, $step, $params, $force);
 224
 225                         $params = $rc['params'];
 226                         $stop = $rc['stop'];
 227
 228                         foreach ($rc['log'] as $line) {
 229                                 _debug($line);
 230                         }
 231                         ++$step;
 232                 }
 233         }
 234 ?>