private function create()
{
global $Now, $Opt;
if (!($tmpdir = $this->tmpdir())) {
return set_error_html("Could not create temporary directory.");
}
// maybe cache zipfile in docstore
$zip_filename = "{$tmpdir}/_hotcrp.zip";
if (count($this->filestore) > 0 && get($Opt, "docstore") && get($Opt, "docstoreAccelRedirect")) {
// calculate sha1 for zipfile contents
usort($this->filestore, function ($a, $b) {
return strcmp($a->filename, $b->filename);
});
$sha1_input = count($this->filestore) . "\n";
foreach ($this->filestore as $f) {
$sha1_input .= $f->filename . "\n" . $f->sha1 . "\n";
}
if (count($this->warnings)) {
$sha1_input .= "README-warnings.txt\n" . join("\n", $this->warnings) . "\n";
}
$zipfile_sha1 = sha1($sha1_input, false);
// look for zipfile
$zfn = $Opt["docstore"] . "/tmp/" . $zipfile_sha1 . ".zip";
if (Filer::prepare_filestore($Opt["docstore"], $zfn)) {
if (file_exists($zfn)) {
if (($mtime = @filemtime($zfn)) < $Now - 21600) {
@touch($zfn);
}
return $zfn;
}
$zip_filename = $zfn;
}
}
// actually run zip
if (!($zipcmd = get($Opt, "zipCommand", "zip"))) {
return set_error_html("<code>zip</code> is not supported on this installation.");
}
$this->_add_filestore();
if (count($this->warnings)) {
$this->add(join("\n", $this->warnings) . "\n", "README-warnings.txt");
}
$opts = $this->recurse ? "-rq" : "-q";
set_time_limit(60);
$out = system("cd {$tmpdir}; {$zipcmd} {$opts} '{$zip_filename}' '" . join("' '", array_keys($this->files)) . "' 2>&1", $status);
if ($status != 0) {
return set_error_html("<code>zip</code> returned an error. Its output: <pre>" . htmlspecialchars($out) . "</pre>");
}
if (!file_exists($zip_filename)) {
return set_error_html("<code>zip</code> output unreadable or empty. Its output: <pre>" . htmlspecialchars($out) . "</pre>");
}
return $zip_filename;
}
