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Copy, expand and do preliminary checks from backup file

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This commit is contained in:
stronk7
2003-05-16 21:52:49 +00:00
parent 7641819df0
commit b9846a9b9e
3 changed files with 138 additions and 65 deletions
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backup/restore.php
+15 -65
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@@ -19,8 +19,8 @@
require_once ("lib.php");
require_once ("restorelib.php");
//Optional variables
optional_variable($id); // course id
//Optional
optional_variable($file);
//Check login
require_login();
@@ -32,89 +32,39 @@
//Check site
if (!$site = get_site()) {
error("Site noto found!");
error("Site not found!");
}
//Check backup_version
if ($CFG->backup_version) {
if ($backup_version > $CFG->backup_version) { // upgrade
$a->oldversion = $CFG->backup_version;
$a->newversion = $backup_version;
$strdatabasechecking = get_string("databasechecking", "", $a);
$strdatabasesuccess = get_string("databasesuccess");
print_header($strdatabasechecking, $strdatabasechecking, $strdatabasechecking);
print_heading($strdatabasechecking);
$db->debug=true;
if (backup_upgrade($a->oldversion)) {
$db->debug=false;
if (set_config("backup_version", $a->newversion)) {
notify($strdatabasesuccess, "green");
notify("You are running Backup/Recovery version ".$backup_release,"black");
print_continue("backup.php");
die;
} else {
notify("Upgrade failed! (Could not update version in config table)");
die;
}
} else {
$db->debug=false;
notify("Upgrade failed! See backup_version.php");
die;
}
} else if ($backup_version < $CFG->backup_version) {
notify("WARNING!!! The code you are using is OLDER than the version that made these databases!");
}
//Not exists. Starting installation
} else {
$strdatabaseupgrades = get_string("databaseupgrades");
print_header($strdatabaseupgrades, $strdatabaseupgrades, $strdatabaseupgrades);
if (set_config("backup_version", "2003010100")) {
print_heading("You are currently going to install the needed structures to Backup/Recover");
print_continue("backup.php");
die;
}
}
upgrade_backup_db($backup_version,$backup_release,"restore.php");
//Get strings
$strcourserestore = get_string("courserestore");
$stradministration = get_string("administration");
//If no course has been selected or cancel button pressed
if (!$id or $cancel) {
//If no file has been selected from the FileManager, inform and end
if (!$file) {
print_header("$site->shortname: $strcourserestore", $site->fullname,
"<A HREF=\"$moodle_home/$CFG->admin/index.php\">$stradministration</A> -> $strcourserestore");
if ($courses = get_courses()) {
print_heading(get_string("choosecourse"));
print_simple_box_start("CENTER");
foreach ($courses as $course) {
echo "<A HREF=\"backup.php?id=$course->id\">$course->fullname ($course->shortname)</A><BR>";
}
print_simple_box_end();
} else {
print_heading(get_string("nocoursesyet"));
print_continue("../$CFG->admin/index.php");
}
print_heading(get_string("nofilesselected"));
print_continue("$moodle_home/$CFG->admin/index.php");
print_footer();
exit;
}
//Get and check course
if (! $course = get_record("course", "id", $id)) {
error("Course ID was incorrect (can't find it)");
}
//We are here, so me have a file.
//Print header
print_header("$site->shortname: $strcoursebackup", $site->fullname,
print_header("$site->shortname: $strcourserestore", $site->fullname,
"<A HREF=\"$moodle_home/$CFG->admin/index.php\">$stradministration</A> ->
<A HREF=\"backup.php\">$strcoursebackup</A> -> $course->fullname ($course->shortname)");
<A HREF=\"backup.php\">$strcourserestore</A> -> ".basename($file));
//Print form
print_heading("$strcoursebackup: $course->fullname ($course->shortname)");
//Print form
print_heading("$strcourserestore: ".basename($file));
print_simple_box_start("center", "", "$THEME->cellheading");
//Call the form, depending the step we are
if (!$launch) {
include_once("backup_form.html");
include_once("restore_precheck.html");
} else if ($launch == "check") {
include_once("backup_check.html");
} else if ($launch == "execute") {
backup/restore_precheck.html
+76
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@@ -0,0 +1,76 @@
<?PHP // $Id$
//This page copies th zip to the temp directory,
//unzip it, check that it is a valid backup file
//inform about its contents and fill all the necesary
//variables to continue with the restore.
//Checks we have the file variable
if (!isset($file)) {
error ("File not specified");
}
//Prepend dataroot to variable to have the absolute path
$file = $CFG->dataroot."/".$file;
//Start the main table
echo "<table cellpadding=5>";
echo "<tr><td>";
//Start the mail ul
echo "<ul>";
//Check the file exists
if (!is_file($file)) {
error ("File not exists ($file)");
}
//Check the file name ends with .zip
if (!substr($file,-4) == ".zip") {
error ("File has an incorrect extension");
}
//Now calculate the unique_code for this restore
$backup_unique_code = time();
//Now check and create the backup dir (if it doesn't exist)
$status = check_and_create_backup_dir($backup_unique_code);
//Empty dir
if ($status) {
echo "<li>Creating temp dir";
$status = clear_backup_dir($backup_unique_code);
}
//Now delete old data and directories under dataroot/temp/backup
if ($status) {
echo "<li>Cleaning old data";
$status = backup_delete_old_data();
}
//Now copy he zip file to dataroot/temp/backup/backup_unique_code
if ($status) {
$status = backup_copy_file($file,$CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file));
}
//Now unzip the file
if ($status) {
echo "<li>Retrieving backup file";
$status = restore_unzip ($CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file),$moodle_home);
}
//Now check for the moodle.xml file
if ($status) {
echo "<li>Checking backup file";
$status = restore_check_moodle_file ($CFG->dataroot."/temp/backup/".$backup_unique_code."/moodle.xml");
}
//End the main ul
echo "</ul>";
//End the main table
echo "</tr></td>";
echo "</table>";
if (!$status) {
error ("An error has ocurred");
}
?>
backup/restorelib.php
+47
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@@ -1,2 +1,49 @@
<?PHP //$Id$
//Functions used in restore
//This function unzips a zip file in the samen directory that it is
//It automatically uses pclzip or command line unzip
function restore_unzip ($file,$moodle_home) {
global $CFG;
$status = true;
if (empty($CFG->unzip)) { // Use built-in php-based unzip function
include_once($moodle_home."/lib/pclzip/pclzip.lib.php");
$archive = new PclZip($file);
if (!$list = $archive->extract(dirname($file))) {
$status = false;
}
} else { // Use external unzip program
$command = "cd ".dirname($file)."; $CFG->unzip -o ".basename($file);
Exec($command);
}
return $status;
}
//This function checks if moodle.xml seems to be a valid xml file
//(exists, has an xml header and a course main tag
function restore_check_moodle_file ($file) {
$status = true;
//Check if it exists
if ($status = is_file($file)) {
//Open it and read the first 200 bytes (chars)
$handle = fopen ($file, "r");
$first_chars = fread($handle,200);
$status = fclose ($handle);
//Chek if it has the requires strings
if ($status) {
$status = strpos($first_chars,"<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
if ($status !== false) {
$status = strpos($first_chars,"<MOODLE_BACKUP>");
}
}
}
return $status;
}
?>