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<?php |
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// This file is part of BOINC. |
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// http://boinc.berkeley.edu |
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// Copyright (C) 2011 University of California |
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// |
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// BOINC is free software; you can redistribute it and/or modify it |
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// under the terms of the GNU Lesser General Public License |
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// as published by the Free Software Foundation, |
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// either version 3 of the License, or (at your option) any later version. |
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// |
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// BOINC is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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// See the GNU Lesser General Public License for more details. |
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// |
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// You should have received a copy of the GNU Lesser General Public License |
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>. |
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// Utility functions for user file sandbox feature |
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// |
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// In this system: |
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// - sandbox files live in the download hierarchy, |
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// with names of the form sb_userid_md5 |
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// - each user has a "sandbox dir" project/sandbox/userid. |
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// The files in this have user-visible names, and contents of the form |
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// sb file_size file_md5 |
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require_once("../inc/util.inc"); |
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require_once("../inc/submit_db.inc"); |
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require_once("../inc/dir_hier.inc"); |
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// Return path of sandbox directory for the given user. |
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// Create dir if not present. |
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// |
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function sandbox_dir($user) { |
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$dir = parse_config(get_config(), "<sandbox_dir>"); |
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if (!$dir) { |
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$dir = "../../sandbox/"; |
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} |
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if (!is_dir($dir)) { |
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mkdir($dir); |
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} |
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$d = "$dir/$user->id"; |
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if (!is_dir($d)) { |
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mkdir($d); |
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} |
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return $d; |
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} |
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function sandbox_write_link_file($path, $size, $md5) { |
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file_put_contents($path, "sb $size $md5"); |
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} |
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// check if a link with the given md5 exists |
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// |
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function sandbox_lf_exists($user, $md5) { |
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$exist = false; |
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$elf = ""; |
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$dir = sandbox_dir($user); |
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$files = sandbox_file_names($user); |
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foreach ($files as $file) { |
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$path = "$dir/$file"; |
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[$err, $file_size, $file_md5] = sandbox_parse_link_file($path); |
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if (!$err){ |
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if (strcmp($md5, $file_md5) == 0) { |
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$exist = true; |
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$elf = $file; |
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break; |
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} |
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} |
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} |
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return array($exist, $elf); |
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} |
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// parse a link file and return (error, size, md5) |
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// |
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function sandbox_parse_link_file($path) { |
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if (!file_exists($path)) { return array(true, null, null); } |
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$x = file_get_contents($path); |
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$n = sscanf($x, "%s %d %s", $s, $size, $md5); |
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if ($n != 3) return array(true, null, null); |
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if ($s != 'sb') return array(true, null, null); |
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return array(false, $size, $md5); |
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} |
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$fanout = parse_config(get_config(), "<uldl_dir_fanout>"); |
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// return the physical name of the file |
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// |
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function sandbox_file_name($user, $md5) { |
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return "sb_".$user->id."_".$md5; |
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} |
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// return the path of the file in the download directory |
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// |
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function sandbox_physical_path($user, $md5) { |
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global $fanout; |
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$f = sandbox_file_name($user, $md5); |
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return dir_hier_path($f, parse_config(get_config(), "<download_dir>"), $fanout); |
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} |
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// return list of files in sandbox |
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// |
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function sandbox_file_names($user) { |
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$d = opendir(sandbox_dir($user)); |
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$names = array(); |
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while (($f = readdir($d)) !== false) { |
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if ($f == '.') continue; |
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if ($f == '..') continue; |
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$names[] = $f; |
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} |
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natsort($names); |
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return $names; |
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} |
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// return a <select> for files in sandbox |
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// |
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function sandbox_file_select( |
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$user, $select_name, $regexp = null, $allow_none = false |
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) { |
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$x = "<select class=\"form-control\" name=$select_name>\n"; |
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if ($allow_none) { |
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$x .= "<option value=\"\">--- None</option>\n"; |
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} |
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$files = sandbox_file_names($user); |
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foreach ($files as $f) { |
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if ($regexp && !preg_match("/$regexp/",$f)) continue; |
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$x .= "<option value=\"$f\">$f</option>\n"; |
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} |
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$x .= "</select>\n"; |
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return $x; |
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} |
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// convert sandbox (link) name to physical path |
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// |
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function sandbox_log_to_phys($user, $log_name) { |
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$dir = sandbox_dir($user); |
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[$err, $file_size, $file_md5] = sandbox_parse_link_file("$dir/$log_name"); |
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if ($err) return null; |
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return sandbox_physical_path($user, $file_md5); |
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} |
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// convert sandbox name to physical name |
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// |
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function sandbox_name_to_phys_name($user, $log_name) { |
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$dir = sandbox_dir($user); |
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[$err, $file_size, $file_md5] = sandbox_parse_link_file("$dir/$log_name"); |
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if ($err) return null; |
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return sandbox_file_name($user, $file_md5); |
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} |
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// check if a file is still being used by a unfinished batch |
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// |
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// TODO: this is a kludge. |
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// Should we use the job_file and batch_file_assoc tables instead? |
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// |
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function sandbox_file_in_use($user, $file){ |
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$ufiles = array(); |
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$pbatches = BoincBatch::enum( |
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sprintf('user_id=%d and state!=%d and state!=%d', |
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$user->id, BATCH_STATE_COMPLETE, BATCH_STATE_ABORTED |
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) |
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); |
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if (!$pbatches) return false; |
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foreach ($pbatches as $batch){ |
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$wus = BoincWorkUnit::enum("batch = $batch->id limit 1" ); |
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if ($wus == null){ |
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continue; |
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} |
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foreach($wus as $wu){ |
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$x = "<in>".$wu->xml_doc."</in>"; |
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$x = simplexml_load_string($x); |
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global $fanout; |
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foreach($x->workunit->file_ref as $fr){ |
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$pname = (string)$fr->file_name; |
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$ufiles[] = $pname; |
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} |
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} |
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} |
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$dir = sandbox_dir($user); |
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$path = $dir."/".$file; |
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list($err, $size, $md5) = sandbox_parse_link_file($path); |
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if (!$err){ |
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$f = sandbox_file_name($user, $md5); |
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foreach($ufiles as $uf) { |
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if (strcmp($f,$uf) == 0){ |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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?> |
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BOINC /
boinc
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