includes/packages.inc

   1 <?php
   2 /**********************************************************************
   3     Copyright (C) FrontAccounting, LLC.
   4         Released under the terms of the GNU General Public License, GPL,
   5         as published by the Free Software Foundation, either version 3
   6         of the License, or (at your option) any later version.
   7     This program is distributed in the hope that it will be useful,
   8     but WITHOUT ANY WARRANTY; without even the implied warranty of
   9     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  10     See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
  11 ***********************************************************************/
  12 include_once($path_to_root. "/includes/archive.inc");
  13 include_once($path_to_root. "/includes/remote_url.inc");
  14 include_once($path_to_root. "/includes/hooks.inc");
  15
  16 define('PKG_CACHE_PATH', $path_to_root.'/modules/_cache');
  17 define('PUBKEY_PATH', $path_to_root);
  18 //
  19 // FrontAccounting package class
  20 //
  21 class package extends gzip_file {
  22
  23         function __construct($filename, $basedir=null)
  24         {
  25                 global $path_to_root;
  26
  27                 if (!$basedir) {
  28                         $basedir = PKG_CACHE_PATH.'/'.substr(basename($filename), 0, -4);
  29                         if (file_exists($basedir)) {
  30 //                              flush_dir($basedir, true);
  31                         } else
  32                         mkdir($basedir);
  33                 }
  34                 parent::__construct($filename);
  35                 $this->set_options(array('basedir'=> $basedir));
  36                 $this->options['type'] = "pkg";
  37         }
  38         //
  39         //      Used by archive class. Use create_archive() instead.
  40         //
  41         function create_pkg()
  42         {
  43                 return $this->create_gzip();
  44         }
  45         //
  46         //      Install package and clean temp directory.
  47         //
  48         function install()
  49         {
  50                 global $path_to_root;
  51
  52                 $success = true;
  53
  54                 $this->set_options(array('overwrite' => 1));
  55                 $this->extract_files(); // extract package in cache directory
  56                 $cachepath = $this->options['basedir'];
  57                 $ctrl = get_control_file("$cachepath/_init/config");
  58
  59                 $targetdir = $path_to_root.'/'.$ctrl['InstallPath'];
  60
  61                 if (!is_dir($targetdir))
  62                         mkdir($targetdir);
  63
  64                 $dpackage = new package("$cachepath/_data", $targetdir);
  65                 $dpackage->set_options(array('overwrite' => 1));
  66
  67                 $flist = $dpackage->extract_files(true);
  68                 if (count($dpackage->error)) {
  69                         $this->error = array_merge($this->error, $dpackage->error);
  70                         return false;
  71                 }
  72                 copy_files($flist, $targetdir, "$cachepath/_back");
  73
  74                 $dpackage->extract_files(); //install package in target directory
  75
  76                 $install = hook_invoke($ctrl['Package'], 'install_extension', $dummy);
  77                 $success &= $install===null || $install;
  78                 $success &= count($dpackage->error) == 0;
  79                 $this->error = array_merge($this->error, $dpackage->error);
  80                 return $success;
  81         }
  82         //
  83         //      Removing package related sources
  84         //
  85         function uninstall()
  86         {
  87                 global $path_to_root;
  88
  89                 $success = true;
  90
  91                 $cachepath = $this->options['basedir'];
  92                 $ctrl = get_control_file("$cachepath/_init/config");
  93
  94                 $targetdir = $path_to_root.'/'.$ctrl['InstallPath'];
  95
  96                 $dpackage = new package("$cachepath/_data", $targetdir);
  97
  98                 $flist = $dpackage->extract_files(true);
  99
 100                 $success &= copy_files($flist, "$cachepath/_back", $targetdir, true);
 101
 102                 if (strpos($ctrl['InstallPath'], 'modules/') === 0) { // flush module directory
 103                         flush_dir($targetdir, true);
 104                         rmdir($targetdir);
 105                 }
 106
 107                 $uninstall = hook_invoke($ctrl['Package'], 'uninstall_extension', $dummy);
 108                 $success &= $uninstall===null || $uninstall;
 109
 110                 return $success;
 111         }
 112         //
 113         //      Purge all package related configuration and data.
 114         //
 115         function purge()
 116         {
 117                 return true;
 118         }
 119
 120 }
 121 //
 122 // Changes field value read from control file (single, or multiline) into
 123 // arrays of subfields if needed.
 124 //
 125 function ufmt_property($key, $value)
 126 {
 127         // indexes used in output arrays
 128         $sub_fields = array(
 129 //              'MenuTabs' => array('url', 'access', 'tab_id', 'title', 'section'),
 130 //              'MenuEntries' => array('url', 'access', 'tab_id', 'title'),
 131         );
 132         if (!isset($sub_fields[$key]))
 133                 return $value==='' ? null : $value;
 134
 135         $prop = array();
 136
 137         if (!is_array($value))
 138                 $value = array($value);
 139         foreach($value as $line) {
 140                 $indexes = $sub_fields[$key];
 141                 $ret = array();
 142                 preg_match_all('/(["])(?:\\\\?+.)*?\1|[^"\s][\S]*/', $line, $match);
 143                 foreach($match[0] as $n => $subf) {
 144                         if ($match[1][$n])
 145                                 $val = strtr(substr($subf, 1, -1),
 146                                         array('\\"'=>'"'));
 147                 else
 148                                 $val = $subf;
 149                         if (count($indexes))
 150                                 $ret[array_shift($indexes)] = $val;
 151                         else
 152                                 $ret[] = $val;
 153                 }
 154                 if (count($ret))
 155                         $prop[] = $ret;
 156         }
 157         return $prop;
 158 }
 159 //=============================================================================
 160 //
 161 // Retrieve control file and return as associative array
 162 //      $index is name of field used as key in result array, or null for numeric keys
 163 //
 164 function get_control_file($file, $index = false) {
 165
 166         $list = gzopen($file, 'rb');
 167         if (!$list) return null;
 168
 169         $repo = $pkg = array();
 170         $key = false; $value = '';
 171         $line = '';
 172         do {
 173                 $line = rtrim($line);
 174                 if ($line && ctype_space($line[0])) { // continuation of multiline property
 175                         if (strlen(ltrim($line))) {
 176                                 if ($value !== '' && !is_array($value))
 177                                         $value = array($value);
 178                                 $value[] = ltrim($line);
 179                                 continue;
 180                         }
 181                 }
 182                 if ($key) { // save previous property if any
 183                         $pkg[$key] = ufmt_property($key, $value);
 184                 }
 185                 if (!strlen($line)) { // end of section
 186                         if (count($pkg)) {
 187                                 if ($index !== true) {
 188                                         if ($index === false) break;
 189                                         if (!isset($pkg[$index])) {
 190                                                 display_error(sprintf(_("No key field '%s' in file '%s'"), $index, $file));
 191                                                 return null;
 192                                         }
 193                                         $repo[$pkg[$index]] = $pkg;
 194                                 } else
 195                                         $repo[] = $pkg;
 196                         }
 197                         $pkg = array();
 198                         $key = null; $value = '';
 199                         continue;
 200                 } elseif (preg_match('/([^:]*):\s*(.*)/', $line, $m)) {
 201                         $key = $m[1]; $value = $m[2];
 202                         if (!strlen($key)) {
 203                                 display_error("Empty key in line $line");
 204                                 return null;
 205                         }
 206                 } else {
 207                         display_error("File parse error in line $line");
 208                         return null;
 209                 }
 210
 211         } while ((($line = fgets($list))!==false) || $key);
 212         fclose($list);
 213
 214         return $index === false ? $pkg : $repo;
 215 }
 216 //
 217 //      Save configuration data to control file.
 218 //
 219 function save_control_file($fname, $list, $zip=false)
 220 {
 221         $file = $zip ?  gzopen($fname, 'wb') : fopen($fname, 'wb');
 222         foreach($list as $section) {
 223                 foreach($section as $key => $value) {
 224                         if (is_array($value)) { // multiline value
 225                                 if (is_array(reset($value))) { // lines have subfields
 226                                         foreach($value as $i => $line) {
 227                 // Subfields containing white spaces or double quotes are doublequoted
 228                 // with " escaped with backslash.
 229                                                 foreach($line as $n => $subfield)
 230                                                         if (preg_match('/[\s"]/', $subfield)) {
 231                                                                 $value[$i][$n] =
 232                                                                         '"'.strtr($subfield, array('"'=>'\\"')).'"';
 233                                                         }
 234                                                 // Subfields are separated by white space.
 235                                                 $value[$i] = implode(' ', $value[$i]);
 236                                         }
 237                                 }
 238                                 // array elements on subsequent lines starting with white space
 239                                 $value = implode("\n ", $value);
 240                         }
 241                         $zip ? gzwrite($file, "$key: $value\n") : fwrite($file, "$key: $value\n");
 242                 }
 243                 $zip ? gzwrite($file, "\n"): fwrite($file, "\n");
 244         }
 245         $zip ? gzclose($file) : fclose($file);
 246 }
 247 //
 248 //      Retrieve text field in localized version or default one
 249 //      when the localized is not avaialable.
 250 //
 251 function pkg_prop($pkg, $property, $lang=false)
 252 {
 253
 254         if ($lang && isset($pkg[$property.'-'.user_language()]))
 255                 $prop = @$pkg[$pname];
 256         else
 257                 $prop = @$pkg[$property];
 258
 259         return is_array($prop) ? implode("\n ",$prop): $prop;
 260 }
 261 //
 262 //      Retrieve list of packages from repository and return as table ($pkgname==null),
 263 //      or find $pkgname package in repository and optionaly download
 264 //
 265 //      $type is type/s of package
 266 //  $filter is optional field selection array in form field=>newkey
 267 //              or (0=>field1, 1=>field2...)
 268 //  $outkey - field used as a key in package list. If null 'Package' field is used.
 269 //
 270 function get_pkg_or_list($type = null, $pkgname = null, $filter=array(), $outkey=null, $download=true) {
 271
 272         global $path_to_root, $repo_auth;
 273
 274         $repo =  (isset($repo_auth['scheme']) ? $repo_auth['scheme'] : 'http://')
 275                         .(isset($repo_auth['login'])  ? $repo_auth['login'].':' : '')
 276                         .(isset($repo_auth['pass'])   ? $repo_auth['pass'].'@' : '')
 277                         .(isset($repo_auth['host'])   ? $repo_auth['host'].'/' : '')
 278                         .(isset($repo_auth['path'])   ? $repo_auth['path'].'/' : '')
 279                         .$repo_auth['branch'];
 280
 281         // first download local copy of repo release file
 282         // and check remote signature with local copy of public key
 283         //
 284         $loclist = PKG_CACHE_PATH.'/Release.gz';
 285         $target_dir = $download==true ? VARLIB_PATH."/" : $download;
 286
 287         if (isset($type) && !is_array($type)) {
 288                 $type = array($type);
 289         }
 290         $refresh = true;
 291         do{
 292                 if (!file_exists($loclist)) {
 293                         if (!url_copy($repo.'/Release.gz', $loclist))
 294                         {
 295                                 display_error(_("Cannot download repo index file." ));
 296                                 return null;
 297                         }
 298                         $refresh = false;
 299                 }
 300                 $sig = url_get_contents($repo.'/Release.sig');
 301                 $data = file_get_contents($loclist);
 302                 $cert = file_get_contents(PUBKEY_PATH.'/FA.pem');
 303                 if (!function_exists('openssl_verify')) {
 304                         display_error(_("OpenSSL have to be available on your server to use extension repository system."));
 305                         return null;
 306                 }
 307                 if (openssl_verify($data, $sig, $cert) <= 0) {
 308                         if ($refresh) {
 309                                 if (!@unlink($loclist))
 310                                 {
 311                                         display_error(sprintf(_("Cannot delete outdated '%s' file."), $loclist));
 312                                         return null;
 313                                 }
 314                         } else {
 315                                 display_error(_('Release file in repository is invalid, or public key is outdated.'));
 316                                 return null;
 317                         }
 318                 } else
 319                         $refresh = false;
 320
 321         } while($refresh);
 322
 323         $Release = get_control_file($loclist, 'Filename');
 324         // download and check all indexes containing given package types
 325         // then complete package list or seek for pkg
 326         $Packages = array();
 327         foreach($Release as $fname => $parms) {
 328                 if ($type && !count(array_intersect(explode(' ', $parms['Type']), $type))) {
 329                         unset($Release[$fname]); continue; // no packages of selected type in this index
 330                 }
 331                 if ($Release[$fname]['Version'] != $repo_auth['branch']) {
 332                         display_warning(_('Repository version does not match application version.')); // ?
 333                 }
 334                 $remoteindex = $repo.'/'.$fname;
 335                 $locindex = PKG_CACHE_PATH.'/'.$fname;
 336                 $refresh = true;
 337                 do{
 338                         if (!file_exists($locindex)) {
 339                                 if (!url_copy($remoteindex, $locindex)) {
 340                                         display_error(sprintf(_("Cannot download '%s' file." ), $fname));
 341                                         return null;
 342                                 }
 343                                 $refresh = false;
 344                         }
 345                         if ($parms['SHA1sum'] != sha1_file($locindex)) {        // check subdir index consistency
 346                                 if ($refresh) {
 347                                         if (!@unlink($locindex)) {
 348                                                 display_error(sprintf(_("Cannot delete outdated '%s' file."), $locindex));
 349                                                 return null;
 350                                         }
 351                                 } else {
 352                                         display_error(sprintf( _("Security alert: broken index file in repository '%s'. Please inform repository administrator about this issue."),
 353                                                 $fname));
 354                                         return null;
 355                                 }
 356                         } else
 357                                 $refresh = false;
 358                 } while($refresh);
 359
 360                  // scan subdir list and select packages of given type
 361                 $pkglist = get_control_file($locindex, 'Package');
 362                 foreach($pkglist as $name => $pkg) {
 363                         $pkgfullname = $repo.'/'.$parms['Path']."/".$pkg['Filename'].'.pkg';
 364                         if (!isset($type) || in_array($pkg['Type'], $type)) {
 365                                 if (empty($filter))
 366                                         $p = $pkg;
 367                                 else {
 368                                         foreach($filter as $field => $key) {
 369                                                 if (is_numeric($field))
 370                                                         $p[$field] = @$pkg[$field];
 371                                                 else
 372                                                         $p[$key] = @$pkg[$field];
 373                                         }
 374                                 }
 375                                 if ($pkgname == null) {
 376                                         $Packages[$outkey ? $outkey : $name] = $p;
 377                                 } elseif ($pkgname == $pkg['Package']) {
 378                                         //download package to temp directory
 379                                         if ($download) {
 380                                                 $locname = $target_dir.$pkg['Filename'].'.pkg';
 381                                                 if (!url_copy($pkgfullname, $locname)) {
 382                                                         display_error(sprintf(_("Cannot download '%s' file." ), $pkgfullname));
 383                                                         return null;
 384                                                 }
 385                                                  // checking sha1 hash is expensive proces, so chekc the package
 386                                                  // consistency just before downloading
 387                                                 if ($pkg['SHA1sum'] != sha1_file($locname)) {
 388                                                         display_error(sprintf( _("Security alert: broken package '%s' in repository. Please inform repository administrator about this issue."),
 389                                                                 $pkgfullname));
 390                                                         return null;
 391                                                 }
 392                                         }
 393                                         return $p;
 394                                 }
 395                         }
 396                 }
 397         }
 398
 399         return $Packages;
 400 }
 401
 402 function get_package($pkgname, $type = null)
 403 {
 404         return get_pkg_or_list($type, $pkgname);
 405 }
 406 /*
 407         Returns full name of installed package, or null if package is not installed.
 408 */
 409 function installed_package($package)
 410 {
 411         $cache = opendir(PKG_CACHE_PATH);
 412
 413         while ($file = @readdir($cache)) {
 414                 if (!is_dir(PKG_CACHE_PATH.'/'.$file))
 415                         continue;
 416                 if (strpos($file, $package.'-') === 0)
 417                         return $file;
 418         }
 419         @closedir($cache);
 420
 421         return null;
 422 }
 423 /*
 424         Remove package from system
 425 */
 426 function uninstall_package($name)
 427 {
 428         $name = installed_package($name);
 429         if (!$name) return true; // not installed
 430         $pkg = new package($name.'.pkg');
 431         $pkg->uninstall();
 432         if($name) {
 433                 flush_dir(PKG_CACHE_PATH.'/'.$name, true);
 434                 rmdir(PKG_CACHE_PATH.'/'.$name);
 435         }
 436         return count($pkg->error)==0;
 437 }
 438
 439 //---------------------------------------------------------------------------------------
 440 //
 441 //      Return merged list of available and installed languages in inform of local
 442 // configuration array supplemented with installed versions information.
 443 //
 444 function get_languages_list()
 445 {
 446         global $installed_languages;
 447
 448         $pkgs = get_pkg_or_list('language', null, array(
 449                                 'Package' => 'package',
 450                                 'Version' => 'available',
 451                                 'Name' => 'name',
 452                                 'Language' => 'code',
 453                                 'Encoding' => 'encoding',
 454                                 'RTLDir' => 'rtl',
 455                                 'Description' => 'Descr',
 456                                 'InstallPath' => 'path'
 457                         ));
 458
 459         // add/update languages already installed
 460         //
 461         foreach($installed_languages as $id => $l) {
 462                 $list = array_search_keys($l['code'], $pkgs, 'code');   // get all packages with this code
 463                 foreach ($list as $name) {
 464                         if ($l['encoding'] == $pkgs[$name]['encoding']) {       // if the same encoding
 465                                 $pkgs[$name]['version'] = @$l['version'];               // set installed version
 466                                 $pkgs[$name]['local_id'] = $id;         // index in installed_languages
 467                                 continue 2;
 468                         }
 469                 }
 470                 $l['local_id'] = $id;
 471                 if (!isset($l['package']) || $l['package'] == '' || !isset($pkgs[$l['package']]))
 472                         $pkgs[] = $l;
 473                 else
 474                         $pkgs[$l['package']] = array_merge($pkgs[$l['package']], $l);
 475         }
 476         if ($pkgs)
 477                 ksort($pkgs);
 478         return $pkgs;
 479 }
 480 //---------------------------------------------------------------------------------------
 481 //
 482 //      Return merged list of available and installed extensions as a local
 483 // configuration array supplemented with installed versions information.
 484 //
 485 function get_extensions_list($type = null)
 486 {
 487         global $path_to_root;
 488
 489         if (isset($type) || !is_array($type)) {
 490                 $type = array($type);
 491         }
 492
 493         $pkgs = get_pkg_or_list($type, null, array(
 494                                 'Package' => 'package',
 495                                 'Version' => 'available',
 496                                 'Name' => 'name',
 497                                 'Description' => 'Descr',
 498                                 'Type' => 'type',
 499                                 'DefaultStatus' => 'active',
 500 //                              'MenuTabs' => 'tabs',
 501 //                              'MenuEntries' => 'entries',
 502                                 'Encoding' => 'encoding',
 503 //                              'AccessExtensions' => 'acc_file',
 504                                 'InstallPath' => 'path'
 505                         ));
 506
 507         // lookup for local extensions
 508         $path = $path_to_root.'/modules/';
 509         $loc = array();
 510         $moddir = opendir($path);
 511
 512         while(false != ($fname = readdir($moddir)))
 513         {
 514                 if(!in_array($fname, array('.','..','CVS','_cache')) && is_dir($path.$fname))
 515                 {
 516                         if (!isset($pkgs[$fname]))
 517                                 $pkgs[$fname] = array(
 518                                         'package' => $fname,
 519                                         'name' => $fname,
 520                                         'version' => '',
 521                                         'available' => '',
 522                                         'type' => 'extension',
 523                                         'path' => 'modules/'.$fname,
 524                                         'active' => false
 525                                         );
 526                 }
 527         }
 528
 529         // add/update extensions already installed
 530         //
 531         $installed = get_company_extensions();
 532         foreach($installed as $extno => $ext) {
 533                 if (!in_array($ext['type'], $type)) continue;
 534                 $ext['local_id'] = $extno;
 535 //              if (!isset($pkgs[$ext['package']]) || $ext['package'] == '')
 536 //                      $pkgs[] = $ext;
 537 //              else
 538                         $pkgs[$ext['package']] = array_merge($pkgs[$ext['package']], $ext);
 539         }
 540         if ($pkgs)
 541                 ksort($pkgs);
 542         return $pkgs;
 543 }
 544 //
 545 // Return merged list of available and installed extensions as a local
 546 // configuration array supplemented with installed versions information.
 547 //
 548 function get_themes_list()
 549 {
 550         $pkgs = get_pkg_or_list('theme', null, array(
 551                                 'Package' => 'package',
 552                                 'Version' => 'available',
 553                                 'Name' => 'name',
 554                                 'Description' => 'Descr'
 555                         ));
 556
 557         // add/update extensions already installed
 558         //
 559         $local = get_company_extensions();
 560
 561         foreach($local as $extno => $ext) {
 562                 if (isset($pkgs[@$ext['package']])) {
 563                         $ext['local_id'] = $extno;
 564                         $pkgs[$ext['package']] = array_merge($pkgs[$ext['package']], $ext);
 565                 }
 566         }
 567         // TODO: Add other themes from themes directory
 568         if ($pkgs)
 569                 ksort($pkgs);
 570         return $pkgs;
 571 }
 572 //---------------------------------------------------------------------------------------
 573 //
 574 //      Return merged list of available and installed COAs as a local
 575 // configuration array supplemented with installed versions information.
 576 //
 577 function get_charts_list()
 578 {
 579         $pkgs = get_pkg_or_list('chart', null, array(
 580                                 'Package' => 'package',
 581                                 'Version' => 'available',
 582                                 'Name' => 'name',
 583                                 'Description' => 'Descr',
 584                                 'Type' => 'type',
 585                                 'InstallPath' => 'path',
 586                                 'Encoding' => 'encoding',
 587                                 'SqlScript' => 'sql'
 588                         ));
 589
 590         // add/update default charts
 591         //
 592         $local = get_company_extensions();
 593
 594         foreach($local as $extno => $ext) {
 595                 if ($ext['type'] != 'chart') continue;
 596                 $ext['local_id'] = $extno;
 597                 if (!isset($pkgs[$ext['package']]) || $ext['package'] == '')
 598                         $pkgs[] = $ext;
 599                 else
 600                         $pkgs[$ext['package']] = array_merge($pkgs[$ext['package']], $ext);
 601         }
 602         if ($pkgs)
 603                 ksort($pkgs);
 604         return $pkgs;
 605 }
 606 //---------------------------------------------------------------------------------------------
 607 //      Install/update package from repository
 608 //
 609 function install_language($pkg_name)
 610 {
 611         global $path_to_root, $installed_languages, $Ajax;
 612
 613         $pkg = get_pkg_or_list('language', $pkg_name);
 614
 615         if ($pkg) {
 616                 $i = array_search_key($pkg['Language'], $installed_languages, 'code');
 617                 if ($i === null)
 618                         $i = count($installed_languages);
 619                 else {  // remove another already installed package for this language
 620                         $old_pkg = @$installed_languages[$i]['package'];
 621                         if ($old_pkg && ($pkg['Package'] != $old_pkg))
 622                                 uninstall_package($old_pkg);
 623                 }
 624
 625                 $package = new package(VARLIB_PATH."/".$pkg['Filename'].'.pkg');
 626                 if ($package->install()) {
 627                         $lang = array(
 628                                 'name' => $pkg['Name'],
 629                                 'package' => $pkg['Package'],
 630                                 'code' => $pkg['Language'],
 631                                 'encoding' => $pkg['Encoding'],
 632                                 'version' => $pkg['Version'],
 633                                 'path' => $pkg['InstallPath']
 634                         );
 635                         if ($pkg['RTLDir']=='yes')
 636                                 $lang['rtl'] = true;
 637                         $installed_languages[$i] = $lang;
 638                         write_lang($installed_languages);
 639                         unlink(VARLIB_PATH."/".$pkg['Filename'].'.pkg');
 640                         $Ajax->activate('lang_tbl');
 641                 } else {
 642                         display_error(implode('<br>', $package->error));
 643                         return false;
 644                 }
 645         } else {
 646                 display_error(sprintf(_("Package '%s' not found."), $pkg_name));
 647                 return false;
 648         }
 649         return true;
 650 }
 651 //---------------------------------------------------------------------------------------------
 652 //      Install/update extension or theme package from repository
 653 //
 654 function install_extension($pkg_name)
 655 {
 656         global $path_to_root, $installed_extensions, $next_extension_id, $Ajax, $db_connections;
 657
 658         $pkg = get_pkg_or_list(array('extension', 'theme', 'chart'), $pkg_name);
 659         if ($pkg) {
 660                 $package = new package(VARLIB_PATH."/".$pkg['Filename'].'.pkg');
 661                 $local_exts = get_company_extensions();
 662                 if ($package->install()) {
 663                         $ext_id = array_search_key($pkg['Package'], $local_exts, 'package');
 664                         if ($ext_id === null)
 665                                 $ext_id = $next_extension_id++;
 666                         else {  // remove another already installed package for this language
 667                                 $old_pkg = $installed_extensions[$ext_id]['package'];
 668                                 if ($old_pkg)
 669                                         uninstall_package($old_pkg);
 670                         }
 671                         $ext = array(
 672                                 'name' => $pkg['Name'],
 673                                 'package' => $pkg['Package'],
 674                                 'version' => $pkg['Version'],
 675                                 'type' => $pkg['Type'],
 676                                 'active' => @$pkg['DefaultStatus'] == 'active' ? true : false,
 677                                 'path' => $pkg['InstallPath'],
 678                         );
 679                         if (isset($pkg['SqlScript']))
 680                                 $ext['sql'] = $pkg['SqlScript'];
 681
 682                         $local_exts[$ext_id] = $ext;
 683                         $ret = update_extensions($local_exts);
 684
 685                         if (($ext['active'] == true) && file_exists($path_to_root.'/'.$ext['path'].'/hooks.php'))
 686                         {
 687                                 // we need to include the new hooks file to activate extension
 688                                 include_once($path_to_root.'/'.$ext['path'].'/hooks.php');
 689                                 foreach($db_connections as $comp => $db)
 690                                         activate_hooks($ext['package'], $comp);
 691                         }
 692
 693                         unlink(VARLIB_PATH."/".$pkg['Filename'].'.pkg');
 694                         $Ajax->activate('ext_tbl');
 695                         return $ret;
 696                 } else {
 697                         display_error(implode('<br>', $package->error));
 698                         return false;
 699                 }
 700         } else {
 701                 display_error(sprintf(_("Package '%s' not found."), $pkg_name));
 702                 return false;
 703         }
 704         return true;
 705 }
 706 /*
 707         Returns true if newer package version is available
 708 */
 709 function check_pkg_upgrade($current, $available)
 710 {
 711         preg_match_all('/[\d]+/', $available, $aver);
 712         if (!count($aver[0]))
 713                 return false;
 714         preg_match_all('/[\d]+/', $current, $cver);
 715         if (!count($cver[0]))
 716                 return true;
 717         foreach($aver[0] as $n => $ver)
 718                 if ($ver>@$cver[0][$n])
 719                         return true;
 720         return false;
 721 }
 722
 723 //
 724 //      Returns package info from index file
 725 //
 726 function get_package_info($pkg, $type=null, $filter=array(), $outkey=null, $download=true) {
 727         return get_pkg_or_list($type, $pkg, $filter, null, false);
 728 }
 729
 730 /*
 731         Check basic extension source compatibility.
 732 */
 733 function check_src_ext_version($ext_v)
 734 {
 735     global $src_version;
 736     if ($ext_v != '-') {
 737         $compat_levels = 2;    // current policy is keeping compatibility on major version level.
 738         $app = explode('.', substr($src_version, 0, strspn($src_version, "0123456789.")));
 739         $pkg = explode('.', substr($ext_v, 0, strspn($ext_v, "0123456789.")));
 740
 741         for ($i=0; $i < min($compat_levels, count($app)); $i++)
 742             if ($pkg[$i] < $app[$i])
 743                 return false;
 744     }
 745     return true;
 746 }