friendica/mod/uexport.php

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<?php
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/**
* @file mod/uexport.php
*/
use Friendica\App;
use Friendica\Core\Hook;
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use Friendica\Core\L10n;
use Friendica\Core\Renderer;
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use Friendica\Core\System;
use Friendica\Database\DBA;
use Friendica\Database\DBStructure;
function uexport_init(App $a) {
global $dbStructure;
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if (!local_user()) {
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exit();
}
require_once("mod/settings.php");
settings_init($a);
$dbStructure = DBStructure::definition($a->getBasePath());
}
function uexport_content(App $a) {
if ($a->argc > 1) {
header("Content-type: application/json");
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header('Content-Disposition: attachment; filename="' . $a->user['nickname'] . '.' . $a->argv[1] . '"');
switch ($a->argv[1]) {
case "backup":
uexport_all($a);
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exit();
break;
case "account":
uexport_account($a);
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exit();
break;
default:
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exit();
}
}
/**
* options shown on "Export personal data" page
* list of array( 'link url', 'link text', 'help text' )
*/
$options = [
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['uexport/account', L10n::t('Export account'), L10n::t('Export your account info and contacts. Use this to make a backup of your account and/or to move it to another server.')],
['uexport/backup', L10n::t('Export all'), L10n::t("Export your accout info, contacts and all your items as json. Could be a very big file, and could take a lot of time. Use this to make a full backup of your account \x28photos are not exported\x29")],
];
Hook::callAll('uexport_options', $options);
$tpl = Renderer::getMarkupTemplate("uexport.tpl");
return Renderer::replaceMacros($tpl, [
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'$title' => L10n::t('Export personal data'),
'$options' => $options
]);
}
function _uexport_multirow($query) {
global $dbStructure;
preg_match("/\s+from\s+`?([a-z\d_]+)`?/i", $query, $match);
$table = $match[1];
$result = [];
$r = q($query);
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if (DBA::isResult($r)) {
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foreach ($r as $rr) {
$p = [];
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foreach ($rr as $k => $v) {
switch ($dbStructure[$table]['fields'][$k]['type']) {
case 'datetime':
$p[$k] = !empty($v) ? $v : DBA::NULL_DATETIME;
break;
default:
$p[$k] = $v;
break;
}
}
$result[] = $p;
}
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}
return $result;
}
function _uexport_row($query) {
global $dbStructure;
preg_match("/\s+from\s+`?([a-z\d_]+)`?/i", $query, $match);
$table = $match[1];
$result = [];
$r = q($query);
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if (DBA::isResult($r)) {
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foreach ($r as $rr) {
foreach ($rr as $k => $v) {
switch ($dbStructure[$table]['fields'][$k]['type']) {
case 'datetime':
$result[$k] = !empty($v) ? $v : DBA::NULL_DATETIME;
break;
default:
$result[$k] = $v;
break;
}
}
}
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}
return $result;
}
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function uexport_account($a) {
$user = _uexport_row(
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sprintf("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval(local_user()))
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);
$contact = _uexport_multirow(
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sprintf("SELECT * FROM `contact` WHERE `uid` = %d ", intval(local_user()))
);
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$profile = _uexport_multirow(
sprintf("SELECT * FROM `profile` WHERE `uid` = %d ", intval(local_user()))
);
$photo = _uexport_multirow(
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sprintf("SELECT * FROM `photo` WHERE uid = %d AND profile = 1", intval(local_user()))
);
foreach ($photo as &$p) {
$p['data'] = bin2hex($p['data']);
}
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$pconfig = _uexport_multirow(
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sprintf("SELECT * FROM `pconfig` WHERE uid = %d", intval(local_user()))
);
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$group = _uexport_multirow(
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sprintf("SELECT * FROM `group` WHERE uid = %d", intval(local_user()))
);
$group_member = _uexport_multirow(
sprintf("SELECT `group_member`.`gid`, `group_member`.`contact-id` FROM `group_member` INNER JOIN `group` ON `group`.`id` = `group_member`.`gid` WHERE `group`.`uid` = %d", intval(local_user()))
);
$output = [
'version' => FRIENDICA_VERSION,
'schema' => DB_UPDATE_VERSION,
'baseurl' => System::baseUrl(),
'user' => $user,
'contact' => $contact,
'profile' => $profile,
'photo' => $photo,
'pconfig' => $pconfig,
'group' => $group,
'group_member' => $group_member,
];
echo json_encode($output, JSON_PARTIAL_OUTPUT_ON_ERROR);
}
/**
* echoes account data and items as separated json, one per line
*
* @param App $a
* @throws Exception
*/
function uexport_all(App $a) {
uexport_account($a);
echo "\n";
$total = 0;
$r = q("SELECT count(*) as `total` FROM `item` WHERE `uid` = %d ",
intval(local_user())
);
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if (DBA::isResult($r)) {
$total = $r[0]['total'];
}
// chunk the output to avoid exhausting memory
for ($x = 0; $x < $total; $x += 500) {
$r = q("SELECT * FROM `item` WHERE `uid` = %d LIMIT %d, %d",
intval(local_user()),
intval($x),
intval(500)
);
$output = ['item' => $r];
echo json_encode($output, JSON_PARTIAL_OUTPUT_ON_ERROR). "\n";
}
}