function fix_private_photos($s, $uid, $item = null, $cid = 0)
{
if (get_config('system', 'disable_embedded')) {
return $s;
}
$a = get_app();
logger('fix_private_photos: check for photos', LOGGER_DEBUG);
$site = substr($a->get_baseurl(), strpos($a->get_baseurl(), '://'));
$orig_body = $s;
$new_body = '';
$img_start = strpos($orig_body, '[img');
$img_st_close = $img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false;
$img_len = $img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false;
while ($img_st_close !== false && $img_len !== false) {
$img_st_close++;
// make it point to AFTER the closing bracket
$image = substr($orig_body, $img_start + $img_st_close, $img_len);
logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
if (stristr($image, $site . '/photo/')) {
// Only embed locally hosted photos
$replace = false;
$i = basename($image);
$i = str_replace(array('.jpg', '.png', '.gif'), array('', '', ''), $i);
$x = strpos($i, '-');
if ($x) {
$res = substr($i, $x + 1);
$i = substr($i, 0, $x);
$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d", dbesc($i), intval($res), intval($uid));
if ($r) {
// Check to see if we should replace this photo link with an embedded image
// 1. No need to do so if the photo is public
// 2. If there's a contact-id provided, see if they're in the access list
// for the photo. If so, embed it.
// 3. Otherwise, if we have an item, see if the item permissions match the photo
// permissions, regardless of order but first check to see if they're an exact
// match to save some processing overhead.
if (has_permissions($r[0])) {
if ($cid) {
$recips = enumerate_permissions($r[0]);
if (in_array($cid, $recips)) {
$replace = true;
}
} elseif ($item) {
if (compare_permissions($item, $r[0])) {
$replace = true;
}
}
}
if ($replace) {
$data = $r[0]['data'];
$type = $r[0]['type'];
// If a custom width and height were specified, apply before embedding
if (preg_match("/\\[img\\=([0-9]*)x([0-9]*)\\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
$width = intval($match[1]);
$height = intval($match[2]);
$ph = new Photo($data, $type);
if ($ph->is_valid()) {
$ph->scaleImage(max($width, $height));
$data = $ph->imageString();
$type = $ph->getType();
}
}
logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
$image = 'data:' . $type . ';base64,' . base64_encode($data);
logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
}
}
}
}
$new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
$orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
if ($orig_body === false) {
$orig_body = '';
}
$img_start = strpos($orig_body, '[img');
$img_st_close = $img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false;
$img_len = $img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false;
}
$new_body = $new_body . $orig_body;
return $new_body;
}
function photo_init(&$a)
{
global $_SERVER;
$prvcachecontrol = false;
$file = "";
switch ($a->argc) {
case 4:
$person = $a->argv[3];
$customres = intval($a->argv[2]);
$type = $a->argv[1];
break;
case 3:
$person = $a->argv[2];
$type = $a->argv[1];
break;
case 2:
$photo = $a->argv[1];
$file = $photo;
break;
case 1:
default:
killme();
// NOTREACHED
}
// strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= filemtime($localFileName)) {
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
header('HTTP/1.1 304 Not Modified');
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: ' . $_SERVER['HTTP_IF_NONE_MATCH']);
header("Expires: " . gmdate("D, d M Y H:i:s", time() + 31536000) . " GMT");
header("Cache-Control: max-age=31536000");
if (function_exists('header_remove')) {
header_remove('Last-Modified');
header_remove('Expires');
header_remove('Cache-Control');
}
exit;
}
$default = 'images/person-175.jpg';
if (isset($type)) {
/**
* Profile photos
*/
switch ($type) {
case 'profile':
case 'custom':
$resolution = 4;
break;
case 'micro':
$resolution = 6;
$default = 'images/person-48.jpg';
break;
case 'avatar':
default:
$resolution = 5;
$default = 'images/person-80.jpg';
break;
}
$uid = str_replace(array('.jpg', '.png'), array('', ''), $person);
$r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1", intval($resolution), intval($uid));
if (count($r)) {
$data = $r[0]['data'];
$mimetype = $r[0]['type'];
}
if (!isset($data)) {
$data = file_get_contents($default);
$mimetype = 'image/jpeg';
}
} else {
/**
* Other photos
*/
$resolution = 0;
foreach (Photo::supportedTypes() as $m => $e) {
$photo = str_replace(".{$e}", '', $photo);
}
if (substr($photo, -2, 1) == '-') {
$resolution = intval(substr($photo, -1, 1));
$photo = substr($photo, 0, -2);
}
// check if the photo exists and get the owner of the photo
$r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1", dbesc($photo), intval($resolution));
if (count($r)) {
$sql_extra = permissions_sql($r[0]['uid']);
// Now we'll see if we can access the photo
$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` <= %d {$sql_extra} ORDER BY scale DESC LIMIT 1", dbesc($photo), intval($resolution));
$public = $r[0]['allow_cid'] == '' and $r[0]['allow_gid'] == '' and $r[0]['deny_cid'] == '' and $r[0]['deny_gid'] == '';
if (count($r)) {
$resolution = $r[0]['scale'];
$data = $r[0]['data'];
$mimetype = $r[0]['type'];
} else {
// The picure exists. We already checked with the first query.
// obviously, this is not an authorized viev!
$data = file_get_contents('images/nosign.jpg');
$mimetype = 'image/jpeg';
$prvcachecontrol = true;
$public = false;
}
}
}
if (!isset($data)) {
if (isset($resolution)) {
switch ($resolution) {
case 4:
$data = file_get_contents('images/person-175.jpg');
$mimetype = 'image/jpeg';
break;
case 5:
$data = file_get_contents('images/person-80.jpg');
$mimetype = 'image/jpeg';
break;
case 6:
$data = file_get_contents('images/person-48.jpg');
$mimetype = 'image/jpeg';
break;
default:
killme();
// NOTREACHED
break;
}
}
}
// Resize only if its not a GIF
if ($mime != "image/gif") {
$ph = new Photo($data, $mimetype);
if ($ph->is_valid()) {
if (isset($customres) && $customres > 0 && $customres < 500) {
$ph->scaleImageSquare($customres);
}
$data = $ph->imageString();
$mimetype = $ph->getType();
}
}
if (function_exists('header_remove')) {
header_remove('Pragma');
header_remove('pragma');
}
header("Content-type: " . $mimetype);
if ($prvcachecontrol) {
// it is a private photo that they have no permission to view.
// tell the browser not to cache it, in case they authenticate
// and subsequently have permission to see it
header("Cache-Control: no-store, no-cache, must-revalidate");
} else {
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: "' . md5($data) . '"');
header("Expires: " . gmdate("D, d M Y H:i:s", time() + 31536000) . " GMT");
header("Cache-Control: max-age=31536000");
}
echo $data;
// If the photo is public and there is an existing photo directory store the photo there
if ($public and $file != "") {
// If the photo path isn't there, try to create it
$basepath = $a->get_basepath();
if (!is_dir($basepath . "/photo")) {
if (is_writable($basepath)) {
mkdir($basepath . "/photo");
}
}
if (is_dir($basepath . "/photo")) {
file_put_contents($basepath . "/photo/" . $file, $data);
}
}
killme();
// NOTREACHED
}
function photo_init(&$a)
{
global $_SERVER;
$prvcachecontrol = false;
$file = "";
switch ($a->argc) {
case 4:
$person = $a->argv[3];
$customres = intval($a->argv[2]);
$type = $a->argv[1];
break;
case 3:
$person = $a->argv[2];
$type = $a->argv[1];
break;
case 2:
$photo = $a->argv[1];
$file = $photo;
break;
case 1:
default:
killme();
// NOTREACHED
}
// strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= filemtime($localFileName)) {
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
header('HTTP/1.1 304 Not Modified');
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: ' . $_SERVER['HTTP_IF_NONE_MATCH']);
header("Expires: " . gmdate("D, d M Y H:i:s", time() + 31536000) . " GMT");
header("Cache-Control: max-age=31536000");
if (function_exists('header_remove')) {
header_remove('Last-Modified');
header_remove('Expires');
header_remove('Cache-Control');
}
exit;
}
$default = 'images/person-175.jpg';
if (isset($type)) {
/**
* Profile photos
*/
switch ($type) {
case 'profile':
case 'custom':
$resolution = 4;
break;
case 'micro':
$resolution = 6;
$default = 'images/person-48.jpg';
break;
case 'avatar':
default:
$resolution = 5;
$default = 'images/person-80.jpg';
break;
}
$uid = str_replace(array('.jpg', '.png'), array('', ''), $person);
$r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1", intval($resolution), intval($uid));
if (count($r)) {
$data = $r[0]['data'];
$mimetype = $r[0]['type'];
}
if (!isset($data)) {
$data = file_get_contents($default);
$mimetype = 'image/jpeg';
}
} else {
/**
* Other photos
*/
$resolution = 0;
foreach (Photo::supportedTypes() as $m => $e) {
$photo = str_replace(".{$e}", '', $photo);
}
if (substr($photo, -2, 1) == '-') {
$resolution = intval(substr($photo, -1, 1));
$photo = substr($photo, 0, -2);
}
$r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1", dbesc($photo), intval($resolution));
if (count($r)) {
$sql_extra = permissions_sql($r[0]['uid']);
// Now we'll see if we can access the photo
$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d {$sql_extra} LIMIT 1", dbesc($photo), intval($resolution));
$public = $r[0]['allow_cid'] == '' and $r[0]['allow_gid'] == '' and $r[0]['deny_cid'] == '' and $r[0]['deny_gid'] == '';
if (count($r)) {
$data = $r[0]['data'];
$mimetype = $r[0]['type'];
} else {
// Does the picture exist? It may be a remote person with no credentials,
// but who should otherwise be able to view it. Show a default image to let
// them know permissions was denied. It may be possible to view the image
// through an authenticated profile visit.
// There won't be many completely unauthorised people seeing this because
// they won't have the photo link, so there's a reasonable chance that the person
// might be able to obtain permission to view it.
$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1", dbesc($photo), intval($resolution));
if (count($r)) {
$data = file_get_contents('images/nosign.jpg');
$mimetype = 'image/jpeg';
$prvcachecontrol = true;
}
}
}
}
if (!isset($data)) {
if (isset($resolution)) {
switch ($resolution) {
case 4:
$data = file_get_contents('images/person-175.jpg');
$mimetype = 'image/jpeg';
break;
case 5:
$data = file_get_contents('images/person-80.jpg');
$mimetype = 'image/jpeg';
break;
case 6:
$data = file_get_contents('images/person-48.jpg');
$mimetype = 'image/jpeg';
break;
default:
killme();
// NOTREACHED
break;
}
}
}
// Resize only if its not a GIF
if ($mime != "image/gif") {
$ph = new Photo($data, $mimetype);
if ($ph->is_valid()) {
if (isset($customres) && $customres > 0 && $customres < 500) {
$ph->scaleImageSquare($customres);
}
$data = $ph->imageString();
$mimetype = $ph->getType();
}
}
if (function_exists('header_remove')) {
header_remove('Pragma');
header_remove('pragma');
}
header("Content-type: " . $mimetype);
if ($prvcachecontrol) {
// it is a private photo that they have no permission to view.
// tell the browser not to cache it, in case they authenticate
// and subsequently have permission to see it
header("Cache-Control: no-store, no-cache, must-revalidate");
} else {
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: "' . md5($data) . '"');
header("Expires: " . gmdate("D, d M Y H:i:s", time() + 31536000) . " GMT");
header("Cache-Control: max-age=31536000");
}
echo $data;
// If the photo is public and there is an existing photo directory store the photo there
if ($public and $file != "") {
if (is_dir($_SERVER["DOCUMENT_ROOT"] . "/photo")) {
file_put_contents($_SERVER["DOCUMENT_ROOT"] . "/photo/" . $file, $data);
}
}
killme();
// NOTREACHED
}
