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restorelib.php
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restorelib.php
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<?php //$Id$
//Functions used in restore
//This function unzips a zip file in the same directory that it is
//It automatically uses pclzip or command line unzip
function restore_unzip ($file) {
return unzip_file($file, '', false);
}
//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 $status;
}
//This function iterates over all modules in backup file, searching for a
//MODNAME_refresh_events() to execute. Perhaps it should ve moved to central Moodle...
function restore_refresh_events($restore) {
global $CFG;
$status = true;
//Take all modules in backup
$modules = $restore->mods;
//Iterate
foreach($modules as $name => $module) {
//Only if the module is being restored
if (isset($module->restore) && $module->restore == 1) {
//Include module library
include_once("$CFG->dirroot/mod/$name/lib.php");
//If module_refresh_events exists
$function_name = $name."_refresh_events";
if (function_exists($function_name)) {
$status = $function_name($restore->course_id);
}
}
}
return $status;
}
//This function makes all the necessary calls to xxxx_decode_content_links_caller()
//function in each module, passing them the desired contents to be decoded
//from backup format to destination site/course in order to mantain inter-activities
//working in the backup/restore process
function restore_decode_content_links($restore) {
global $CFG;
$status = true;
if (!defined('RESTORE_SILENTLY')) {
echo "<ul>";
}
foreach ($restore->mods as $name => $info) {
//If the module is being restored
if (isset($info->restore) && $info->restore == 1) {
//Check if the xxxx_decode_content_links_caller exists
include_once("$CFG->dirroot/mod/$name/restorelib.php");
$function_name = $name."_decode_content_links_caller";
if (function_exists($function_name)) {
if (!defined('RESTORE_SILENTLY')) {
echo "<li>".get_string ("from")." ".get_string("modulenameplural",$name);
}
$status = $function_name($restore);
if (!defined('RESTORE_SILENTLY')) {
echo '</li>';
}
}
}
}
if (!defined('RESTORE_SILENTLY')) {
echo "</ul>";
}
// TODO: process all html text also in blocks too
return $status;
}
//This function is called from all xxxx_decode_content_links_caller(),
//its task is to ask all modules (maybe other linkable objects) to restore
//links to them.
function restore_decode_content_links_worker($content,$restore) {
foreach($restore->mods as $name => $info) {
$function_name = $name."_decode_content_links";
if (function_exists($function_name)) {
$content = $function_name($content,$restore);
}
}
return $content;
}
//This function converts all the wiki texts in the restored course
//to the Markdown format. Used only for backup files prior 2005041100.
//It calls every module xxxx_convert_wiki2markdown function
function restore_convert_wiki2markdown($restore) {
$status = true;
if (!defined('RESTORE_SILENTLY')) {
echo "<ul>";
}
foreach ($restore->mods as $name => $info) {
//If the module is being restored
if ($info->restore == 1) {
//Check if the xxxx_restore_wiki2markdown exists
$function_name = $name."_restore_wiki2markdown";
if (function_exists($function_name)) {
$status = $function_name($restore);
if (!defined('RESTORE_SILENTLY')) {
echo "<li>".get_string("modulenameplural",$name);
echo '</li>';
}
}
}
}
if (!defined('RESTORE_SILENTLY')) {
echo "</ul>";
}
return $status;
}
//This function receives a wiki text in the restore process and
//return it with every link to modules " modulename:moduleid"
//converted if possible. See the space before modulename!!
function restore_decode_wiki_content($content,$restore) {
global $CFG;
$result = $content;
$searchstring='/ ([a-zA-Z]+):([0-9]+)\(([^)]+)\)/';
//We look for it
preg_match_all($searchstring,$content,$foundset);
//If found, then we are going to look for its new id (in backup tables)
if ($foundset[0]) {
//print_object($foundset); //Debug
//Iterate over foundset[2]. They are the old_ids
foreach($foundset[2] as $old_id) {
//We get the needed variables here (course id)
$rec = backup_getid($restore->backup_unique_code,"course_modules",$old_id);
//Personalize the searchstring
$searchstring='/ ([a-zA-Z]+):'.$old_id.'\(([^)]+)\)/';
//If it is a link to this course, update the link to its new location
if($rec->new_id) {
//Now replace it
$result= preg_replace($searchstring,' $1:'.$rec->new_id.'($2)',$result);
} else {
//It's a foreign link so redirect it to its original URL
$result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/$1/view.php?id='.$old_id.'($2)',$result);
}
}
}
return $result;
}
//This function read the xml file and store it data from the info zone in an object
function restore_read_xml_info ($xml_file) {
//We call the main read_xml function, with todo = INFO
$info = restore_read_xml ($xml_file,"INFO",false);
return $info;
}
//This function read the xml file and store it data from the course header zone in an object
function restore_read_xml_course_header ($xml_file) {
//We call the main read_xml function, with todo = COURSE_HEADER
$info = restore_read_xml ($xml_file,"COURSE_HEADER",false);
return $info;
}
//This function read the xml file and store its data from the blocks in a object
function restore_read_xml_blocks ($xml_file) {
//We call the main read_xml function, with todo = BLOCKS
$info = restore_read_xml ($xml_file,'BLOCKS',false);
return $info;
}
//This function read the xml file and store its data from the sections in a object
function restore_read_xml_sections ($xml_file) {
//We call the main read_xml function, with todo = SECTIONS
$info = restore_read_xml ($xml_file,"SECTIONS",false);
return $info;
}
//This function read the xml file and store its data from the course format in an object
function restore_read_xml_formatdata ($xml_file) {
//We call the main read_xml function, with todo = FORMATDATA
$info = restore_read_xml ($xml_file,'FORMATDATA',false);
return $info;
}
//This function read the xml file and store its data from the metacourse in a object
function restore_read_xml_metacourse ($xml_file) {
//We call the main read_xml function, with todo = METACOURSE
$info = restore_read_xml ($xml_file,"METACOURSE",false);
return $info;
}
//This function read the xml file and store its data from the gradebook in a object
function restore_read_xml_gradebook ($restore, $xml_file) {
//We call the main read_xml function, with todo = GRADEBOOK
$info = restore_read_xml ($xml_file,"GRADEBOOK",$restore);
return $info;
}
//This function read the xml file and store its data from the users in
//backup_ids->info db (and user's id in $info)
function restore_read_xml_users ($restore,$xml_file) {
//We call the main read_xml function, with todo = USERS
$info = restore_read_xml ($xml_file,"USERS",$restore);
return $info;
}
//This function read the xml file and store its data from the messages in
//backup_ids->message backup_ids->message_read and backup_ids->contact and db (and their counters in info)
function restore_read_xml_messages ($restore,$xml_file) {
//We call the main read_xml function, with todo = MESSAGES
$info = restore_read_xml ($xml_file,"MESSAGES",$restore);
return $info;
}
//This function read the xml file and store its data from the questions in
//backup_ids->info db (and category's id in $info)
function restore_read_xml_questions ($restore,$xml_file) {
//We call the main read_xml function, with todo = QUESTIONS
$info = restore_read_xml ($xml_file,"QUESTIONS",$restore);
return $info;
}
//This function read the xml file and store its data from the scales in
//backup_ids->info db (and scale's id in $info)
function restore_read_xml_scales ($restore,$xml_file) {
//We call the main read_xml function, with todo = SCALES
$info = restore_read_xml ($xml_file,"SCALES",$restore);
return $info;
}
//This function read the xml file and store its data from the groups in
//backup_ids->info db (and group's id in $info)
function restore_read_xml_groups ($restore,$xml_file) {
//We call the main read_xml function, with todo = GROUPS
$info = restore_read_xml ($xml_file,"GROUPS",$restore);
return $info;
}
//This function read the xml file and store its data from the groupings in
//backup_ids->info db (and grouping's id in $info)
function restore_read_xml_groupings ($restore,$xml_file) {
//We call the main read_xml function, with todo = GROUPINGS
$info = restore_read_xml ($xml_file,"GROUPINGS",$restore);
return $info;
}
//This function read the xml file and store its data from the events (course) in
//backup_ids->info db (and event's id in $info)
function restore_read_xml_events ($restore,$xml_file) {
//We call the main read_xml function, with todo = EVENTS
$info = restore_read_xml ($xml_file,"EVENTS",$restore);
return $info;
}
//This function read the xml file and store its data from the modules in
//backup_ids->info
function restore_read_xml_modules ($restore,$xml_file) {
//We call the main read_xml function, with todo = MODULES
$info = restore_read_xml ($xml_file,"MODULES",$restore);
return $info;
}
//This function read the xml file and store its data from the logs in
//backup_ids->info
function restore_read_xml_logs ($restore,$xml_file) {
//We call the main read_xml function, with todo = LOGS
$info = restore_read_xml ($xml_file,"LOGS",$restore);
return $info;
}
function restore_read_xml_roles ($xml_file) {
//We call the main read_xml function, with todo = ROLES
$info = restore_read_xml ($xml_file,"ROLES",false);
return $info;
}
//This function prints the contents from the info parammeter passed
function restore_print_info ($info) {
global $CFG;
$status = true;
if ($info) {
//This is tha align to every ingo table
$table->align = array ("right","left");
//This is the nowrap clause
$table->wrap = array ("","nowrap");
//The width
$table->width = "70%";
//Put interesting info in table
//The backup original name
$tab[0][0] = "<b>".get_string("backuporiginalname").":</b>";
$tab[0][1] = $info->backup_name;
//The moodle version
$tab[1][0] = "<b>".get_string("moodleversion").":</b>";
$tab[1][1] = $info->backup_moodle_release." (".$info->backup_moodle_version.")";
//The backup version
$tab[2][0] = "<b>".get_string("backupversion").":</b>";
$tab[2][1] = $info->backup_backup_release." (".$info->backup_backup_version.")";
//The backup date
$tab[3][0] = "<b>".get_string("backupdate").":</b>";
$tab[3][1] = userdate($info->backup_date);
//Print title
print_heading(get_string("backup").":");
$table->data = $tab;
//Print backup general info
print_table($table);
if ($info->backup_backup_version <= 2005070500) {
notify(get_string('backupnonisowarning')); // Message informing that this backup may not work!
}
//Now backup contents in another table
$tab = array();
//First mods info
$mods = $info->mods;
$elem = 0;
foreach ($mods as $key => $mod) {
$tab[$elem][0] = "<b>".get_string("modulenameplural",$key).":</b>";
if ($mod->backup == "false") {
$tab[$elem][1] = get_string("notincluded");
} else {
if ($mod->userinfo == "true") {
$tab[$elem][1] = get_string("included")." ".get_string("withuserdata");
} else {
$tab[$elem][1] = get_string("included")." ".get_string("withoutuserdata");
}
if (isset($mod->instances) && is_array($mod->instances) && count($mod->instances)) {
foreach ($mod->instances as $instance) {
if ($instance->backup) {
$elem++;
$tab[$elem][0] = $instance->name;
if ($instance->userinfo == 'true') {
$tab[$elem][1] = get_string("included")." ".get_string("withuserdata");
} else {
$tab[$elem][1] = get_string("included")." ".get_string("withoutuserdata");
}
}
}
}
}
$elem++;
}
//Metacourse info
$tab[$elem][0] = "<b>".get_string("metacourse").":</b>";
if ($info->backup_metacourse == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//Users info
$tab[$elem][0] = "<b>".get_string("users").":</b>";
$tab[$elem][1] = get_string($info->backup_users);
$elem++;
//Logs info
$tab[$elem][0] = "<b>".get_string("logs").":</b>";
if ($info->backup_logs == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//User Files info
$tab[$elem][0] = "<b>".get_string("userfiles").":</b>";
if ($info->backup_user_files == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//Course Files info
$tab[$elem][0] = "<b>".get_string("coursefiles").":</b>";
if ($info->backup_course_files == "true") {
$tab[$elem][1] = get_string("yes");
} else {
$tab[$elem][1] = get_string("no");
}
$elem++;
//Messages info (only showed if present)
if ($info->backup_messages == 'true') {
$tab[$elem][0] = "<b>".get_string('messages','message').":</b>";
$tab[$elem][1] = get_string('yes');
$elem++;
} else {
//Do nothing
}
$table->data = $tab;
//Print title
print_heading(get_string("backupdetails").":");
//Print backup general info
print_table($table);
} else {
$status = false;
}
return $status;
}
//This function prints the contents from the course_header parammeter passed
function restore_print_course_header ($course_header) {
$status = true;
if ($course_header) {
//This is tha align to every ingo table
$table->align = array ("right","left");
//The width
$table->width = "70%";
//Put interesting course header in table
//The course name
$tab[0][0] = "<b>".get_string("name").":</b>";
$tab[0][1] = $course_header->course_fullname." (".$course_header->course_shortname.")";
//The course summary
$tab[1][0] = "<b>".get_string("summary").":</b>";
$tab[1][1] = $course_header->course_summary;
$table->data = $tab;
//Print title
print_heading(get_string("course").":");
//Print backup course header info
print_table($table);
} else {
$status = false;
}
return $status;
}
//This function create a new course record.
//When finished, course_header contains the id of the new course
function restore_create_new_course($restore,&$course_header) {
global $CFG;
$status = true;
$fullname = $course_header->course_fullname;
$shortname = $course_header->course_shortname;
$currentfullname = "";
$currentshortname = "";
$counter = 0;
//Iteratere while the name exists
do {
if ($counter) {
$suffixfull = " ".get_string("copyasnoun")." ".$counter;
$suffixshort = "_".$counter;
} else {
$suffixfull = "";
$suffixshort = "";
}
$currentfullname = $fullname.$suffixfull;
// Limit the size of shortname - database column accepts <= 15 chars
$currentshortname = substr($shortname, 0, 15 - strlen($suffixshort)).$suffixshort;
$coursefull = get_record("course","fullname",addslashes($currentfullname));
$courseshort = get_record("course","shortname",addslashes($currentshortname));
$counter++;
} while ($coursefull || $courseshort);
//New name = currentname
$course_header->course_fullname = $currentfullname;
$course_header->course_shortname = $currentshortname;
//Now calculate the category
$category = get_record("course_categories","id",$course_header->category->id,
"name",addslashes($course_header->category->name));
//If no exists, try by name only
if (!$category) {
$category = get_record("course_categories","name",addslashes($course_header->category->name));
}
//If no exists, get category id 1
if (!$category) {
$category = get_record("course_categories","id","1");
}
//If category 1 doesn'exists, lets create the course category (get it from backup file)
if (!$category) {
$ins_category->name = addslashes($course_header->category->name);
$ins_category->parent = 0;
$ins_category->sortorder = 0;
$ins_category->coursecount = 0;
$ins_category->visible = 0; //To avoid interferences with the rest of the site
$ins_category->timemodified = time();
$newid = insert_record("course_categories",$ins_category);
$category->id = $newid;
$category->name = $course_header->category->name;
}
//If exists, put new category id
if ($category) {
$course_header->category->id = $category->id;
$course_header->category->name = $category->name;
//Error, cannot locate category
} else {
$course_header->category->id = 0;
$course_header->category->name = get_string("unknowncategory");
$status = false;
}
//Create the course_object
if ($status) {
$course->category = addslashes($course_header->category->id);
$course->password = addslashes($course_header->course_password);
$course->fullname = addslashes($course_header->course_fullname);
$course->shortname = addslashes($course_header->course_shortname);
$course->idnumber = addslashes($course_header->course_idnumber);
$course->idnumber = ''; //addslashes($course_header->course_idnumber); // we don't want this at all.
$course->summary = restore_decode_absolute_links(addslashes($course_header->course_summary));
$course->format = addslashes($course_header->course_format);
$course->showgrades = addslashes($course_header->course_showgrades);
$course->newsitems = addslashes($course_header->course_newsitems);
$course->teacher = addslashes($course_header->course_teacher);
$course->teachers = addslashes($course_header->course_teachers);
$course->student = addslashes($course_header->course_student);
$course->students = addslashes($course_header->course_students);
$course->guest = addslashes($course_header->course_guest);
$course->startdate = addslashes($course_header->course_startdate);
$course->startdate += $restore->course_startdateoffset;
$course->enrolperiod = addslashes($course_header->course_enrolperiod);
$course->numsections = addslashes($course_header->course_numsections);
//$course->showrecent = addslashes($course_header->course_showrecent); INFO: This is out in 1.3
$course->maxbytes = addslashes($course_header->course_maxbytes);
$course->showreports = addslashes($course_header->course_showreports);
if (isset($course_header->course_groupmode)) {
$course->groupmode = addslashes($course_header->course_groupmode);
}
if (isset($course_header->course_groupmodeforce)) {
$course->groupmodeforce = addslashes($course_header->course_groupmodeforce);
}
$course->lang = addslashes($course_header->course_lang);
$course->theme = addslashes($course_header->course_theme);
$course->cost = addslashes($course_header->course_cost);
$course->currency = isset($course_header->course_currency)?addslashes($course_header->course_currency):'';
$course->marker = addslashes($course_header->course_marker);
$course->visible = addslashes($course_header->course_visible);
$course->hiddensections = addslashes($course_header->course_hiddensections);
$course->timecreated = addslashes($course_header->course_timecreated);
$course->timemodified = addslashes($course_header->course_timemodified);
$course->metacourse = addslashes($course_header->course_metacourse);
//Calculate sortorder field
$sortmax = get_record_sql('SELECT MAX(sortorder) AS max
FROM ' . $CFG->prefix . 'course
WHERE category=' . $course->category);
if (!empty($sortmax->max)) {
$course->sortorder = $sortmax->max + 1;
unset($sortmax);
} else {
$course->sortorder = 100;
}
//Now, recode some languages (Moodle 1.5)
if ($course->lang == 'ma_nt') {
$course->lang = 'mi_nt';
}
//Disable course->metacourse if avoided in restore config
if (!$restore->metacourse) {
$course->metacourse = 0;
}
//Check if the theme exists in destination server
$themes = get_list_of_themes();
if (!in_array($course->theme, $themes)) {
$course->theme = '';
}
//Now insert the record
$newid = insert_record("course",$course);
if ($newid) {
//save old and new course id
backup_putid ($restore->backup_unique_code,"course",$course_header->course_id,$newid);
//Replace old course_id in course_header
$course_header->course_id = $newid;
} else {
$status = false;
}
}
return $status;
}
/**
* Returns the best question category (id) found to restore one
* question category from a backup file. Works by stamp (since Moodle 1.1)
* or by name (for older versions).
*
* @param object $cat the question_categories record to be searched
* @param integer $courseid the course where we are restoring
* @return integer the id of a existing question_category or 0 (not found)
*/
function restore_get_best_question_category($cat, $courseid) {
$found = 0;
//Decide how to work (by stamp or name)
if ($cat->stamp) {
$searchfield = 'stamp';
$searchvalue = $cat->stamp;
} else {
$searchfield = 'name';
$searchvalue = $cat->name;
}
//First shot. Try to get the category from the course being restored
if ($fcat = get_record('question_categories','course',$courseid,$searchfield,$searchvalue)) {
$found = $fcat->id;
//Second shot. Try to obtain any concordant category and check its publish status and editing rights
} else if ($fcats = get_records('question_categories', $searchfield, $searchvalue, 'id', 'id, publish, course')) {
foreach ($fcats as $fcat) {
if ($fcat->publish == 1 && has_capability('moodle/site:restore', get_context_instance(CONTEXT_COURSE, $fcat->course))) {
$found = $fcat->id;
break;
}
}
}
return $found;
}
//This function creates all the block stuff when restoring courses
//It calls selectively to restore_create_block_instances() for 1.5
//and above backups. Upwards compatible with old blocks.
function restore_create_blocks($restore, $backup_block_format, $blockinfo, $xml_file) {
$status = true;
delete_records('block_instance', 'pageid', $restore->course_id, 'pagetype', PAGE_COURSE_VIEW);
if (empty($backup_block_format)) { // This is a backup from Moodle < 1.5
if (empty($blockinfo)) {
// Looks like it's from Moodle < 1.3. Let's give the course default blocks...
$newpage = page_create_object(PAGE_COURSE_VIEW, $restore->course_id);
blocks_repopulate_page($newpage);
} else {
// We just have a blockinfo field, this is a legacy 1.4 or 1.3 backup
$blockrecords = get_records_select('block', '', '', 'name, id');
$temp_blocks_l = array();
$temp_blocks_r = array();
@list($temp_blocks_l, $temp_blocks_r) = explode(':', $blockinfo);
$temp_blocks = array(BLOCK_POS_LEFT => explode(',', $temp_blocks_l), BLOCK_POS_RIGHT => explode(',', $temp_blocks_r));
foreach($temp_blocks as $blockposition => $blocks) {
$blockweight = 0;
foreach($blocks as $blockname) {
if(!isset($blockrecords[$blockname])) {
// We don't know anything about this block!
continue;
}
$blockinstance = new stdClass;
// Remove any - prefix before doing the name-to-id mapping
if(substr($blockname, 0, 1) == '-') {
$blockname = substr($blockname, 1);
$blockinstance->visible = 0;
} else {
$blockinstance->visible = 1;
}
$blockinstance->blockid = $blockrecords[$blockname]->id;
$blockinstance->pageid = $restore->course_id;
$blockinstance->pagetype = PAGE_COURSE_VIEW;
$blockinstance->position = $blockposition;
$blockinstance->weight = $blockweight;
if(!$status = insert_record('block_instance', $blockinstance)) {
$status = false;
}
++$blockweight;
}
}
}
} else if($backup_block_format == 'instances') {
$status = restore_create_block_instances($restore,$xml_file);
}
return $status;
}
//This function creates all the block_instances from xml when restoring in a
//new course
function restore_create_block_instances($restore,$xml_file) {
$status = true;
//Check it exists
if (!file_exists($xml_file)) {
$status = false;
}
//Get info from xml
if ($status) {
$info = restore_read_xml_blocks($xml_file);
}
if(empty($info->instances)) {
return $status;
}
// First of all, iterate over the blocks to see which distinct pages we have
// in our hands and arrange the blocks accordingly.
$pageinstances = array();
foreach($info->instances as $instance) {
//pagetype and pageid black magic, we have to handle the case of blocks for the
//course, blocks from other pages in that course etc etc etc.
if($instance->pagetype == PAGE_COURSE_VIEW) {
// This one's easy...
$instance->pageid = $restore->course_id;
}
else {
$parts = explode('-', $instance->pagetype);
if($parts[0] == 'mod') {
if(!$restore->mods[$parts[1]]->restore) {
continue;
}
$getid = backup_getid($restore->backup_unique_code, $parts[1], $instance->pageid);
$instance->pageid = $getid->new_id;
}
else {
// Not invented here ;-)
continue;
}
}
if(!isset($pageinstances[$instance->pagetype])) {
$pageinstances[$instance->pagetype] = array();
}
if(!isset($pageinstances[$instance->pagetype][$instance->pageid])) {
$pageinstances[$instance->pagetype][$instance->pageid] = array();
}
$pageinstances[$instance->pagetype][$instance->pageid][] = $instance;
}
$blocks = get_records_select('block', '', '', 'name, id, multiple');
// For each type of page we have restored
foreach($pageinstances as $thistypeinstances) {
// For each page id of that type
foreach($thistypeinstances as $thisidinstances) {
$addedblocks = array();
$maxweights = array();
// For each block instance in that page
foreach($thisidinstances as $instance) {
if(!isset($blocks[$instance->name])) {
//We are trying to restore a block we don't have...
continue;
}
//If we have already added this block once and multiples aren't allowed, disregard it
if(!$blocks[$instance->name]->multiple && isset($addedblocks[$instance->name])) {
continue;
}
//If its the first block we add to a new position, start weight counter equal to 0.
if(empty($maxweights[$instance->position])) {
$maxweights[$instance->position] = 0;
}
//If the instance weight is greater than the weight counter (we skipped some earlier
//blocks most probably), bring it back in line.
if($instance->weight > $maxweights[$instance->position]) {
$instance->weight = $maxweights[$instance->position];
}
//Add this instance
$instance->blockid = $blocks[$instance->name]->id;
if ($newid = insert_record('block_instance', $instance)) {
if (!empty($instance->id)) { // this will only be set if we come from 1.7 and above backups
backup_putid ($restore->backup_unique_code,"block_instance",$instance->id,$newid);
}
} else {
$status = false;
break;
}
//Get an object for the block and tell it it's been restored so it can update dates
//etc. if necessary
$blockobj=block_instance($instance->name,$instance);
$blockobj->after_restore($restore);
//Now we can increment the weight counter
++$maxweights[$instance->position];
//Keep track of block types we have already added
$addedblocks[$instance->name] = true;
}
}
}
return $status;
}
//This function creates all the course_sections and course_modules from xml
//when restoring in a new course or simply checks sections and create records
//in backup_ids when restoring in a existing course
function restore_create_sections(&$restore, $xml_file) {
global $CFG,$db;
$status = true;
//Check it exists
if (!file_exists($xml_file)) {
$status = false;
}
//Get info from xml
if ($status) {
$info = restore_read_xml_sections($xml_file);
}
//Put the info in the DB, recoding ids and saving the in backup tables
$sequence = "";
if ($info) {
//For each, section, save it to db
foreach ($info->sections as $key => $sect) {
$sequence = "";
$section->course = $restore->course_id;
$section->section = $sect->number;
$section->summary = restore_decode_absolute_links(addslashes($sect->summary));
$section->visible = $sect->visible;
$section->sequence = "";
//Now calculate the section's newid
$newid = 0;
if ($restore->restoreto == 2) {
//Save it to db (only if restoring to new course)
$newid = insert_record("course_sections",$section);
} else {
//Get section id when restoring in existing course
$rec = get_record("course_sections","course",$restore->course_id,
"section",$section->section);
//If that section doesn't exist, get section 0 (every mod will be
//asigned there
if(!$rec) {
$rec = get_record("course_sections","course",$restore->course_id,
"section","0");
}
//New check. If section 0 doesn't exist, insert it here !!
//Teorically this never should happen but, in practice, some users
//have reported this issue.
if(!$rec) {
$zero_sec->course = $restore->course_id;
$zero_sec->section = 0;
$zero_sec->summary = "";
$zero_sec->sequence = "";
$newid = insert_record("course_sections",$zero_sec);
$rec->id = $newid;
$rec->sequence = "";
}
$newid = $rec->id;
$sequence = $rec->sequence;
}
if ($newid) {
//save old and new section id
backup_putid ($restore->backup_unique_code,"course_sections",$key,$newid);
} else {
$status = false;
}
//If all is OK, go with associated mods
if ($status) {
//If we have mods in the section
if (!empty($sect->mods)) {
//For each mod inside section
foreach ($sect->mods as $keym => $mod) {
// Yu: This part is called repeatedly for every instance,
// so it is necessary to set the granular flag and check isset()
// when the first instance of this type of mod is processed.
if (!isset($restore->mods[$mod->type]->granular) && isset($restore->mods[$mod->type]->instances) && is_array($restore->mods[$mod->type]->instances)) {
// This defines whether we want to restore specific
// instances of the modules (granular restore), or
// whether we don't care and just want to restore
// all module instances (non-granular).
$restore->mods[$mod->type]->granular = true;
} else {
$restore->mods[$mod->type]->granular = false;
}
//Check if we've to restore this module (and instance)
if (!empty($restore->mods[$mod->type]->restore)) {
if (empty($restore->mods[$mod->type]->granular) // we don't care about per instance
|| (array_key_exists($mod->instance,$restore->mods[$mod->type]->instances)
&& !empty($restore->mods[$mod->type]->instances[$mod->instance]->restore))) {
//Get the module id from modules
$module = get_record("modules","name",$mod->type);
if ($module) {
$course_module->course = $restore->course_id;
$course_module->module = $module->id;
$course_module->section = $newid;
$course_module->added = $mod->added;
$course_module->score = $mod->score;
$course_module->indent = $mod->indent;
$course_module->visible = $mod->visible;
if (isset($mod->groupmode)) {
$course_module->groupmode = $mod->groupmode;
}
$course_module->instance = 0;
//NOTE: The instance (new) is calculated and updated in db in the
// final step of the restore. We don't know it yet.
//print_object($course_module); //Debug
//Save it to db
$newidmod = insert_record("course_modules",$course_module);
if ($newidmod) {
//save old and new module id
//In the info field, we save the original instance of the module
//to use it later
backup_putid ($restore->backup_unique_code,"course_modules",
$keym,$newidmod,$mod->instance);
$restore->mods[$mod->type]->instances[$mod->instance]->restored_as_course_module = $newidmod;
} else {
$status = false;
}
//Now, calculate the sequence field
if ($status) {
if ($sequence) {
$sequence .= ",".$newidmod;
} else {
$sequence = $newidmod;
}
}
} else {
$status = false;
}
}
}
}
}
}
//If all is OK, update sequence field in course_sections
if ($status) {
if (isset($sequence)) {
$update_rec->id = $newid;
$update_rec->sequence = $sequence;
$status = update_record("course_sections",$update_rec);
}
}
}
} else {
$status = false;
}
return $status;