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Fix Tilepic viewer path resolution using configured media paths #1934

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Fix Tilepic viewer path resolution using configured media paths #1934

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74 changes: 50 additions & 24 deletions viewers/apps/tilepic.php
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Original file line number Diff line number Diff line change
Expand Up @@ -30,41 +30,67 @@
# to save time. If you are using non-JPEG tiles (unlikely, right?) then change the
# Content-type header below.

$is_windows = (substr(PHP_OS, 0, 3) == 'WIN');
$filepath = $_REQUEST["p"];
$tile = $_REQUEST["t"];
$win_disk = '';
if ($is_windows) {
$p = explode(DIRECTORY_SEPARATOR, __FILE__);
$script_path = join("/", array_slice($p, 0, -3));
$win_disk = $p[0];
} else {
$script_path = join("/", array_slice(explode(DIRECTORY_SEPARATOR, isset($_SERVER['SCRIPT_FILENAME']) ? $_SERVER['SCRIPT_FILENAME'] : __FILE__), 0, -3));
$filepath = $_REQUEST["p"] ?? '';
$tile = (int)($_REQUEST["t"] ?? 0);

$raw_filepath = preg_replace("/\.tpc$/", "", $filepath);
$public_path = parse_url($raw_filepath, PHP_URL_PATH);
if (!$public_path) {
$public_path = $raw_filepath;
}
$filepath = preg_replace("/^http[s]{0,1}:\/\/[^\/]+/i", "", preg_replace("/\.tpc\$/", "", $filepath));
$public_path = '/'.ltrim($public_path, '/');
$public_path = preg_replace("/[^A-Za-z0-9_\-\/.]/", "", $public_path);
$public_path = preg_replace('!/+!', '/', $public_path);

$fp = explode("/", $filepath); array_shift($fp);
$sp = explode("/", $script_path); array_shift($sp);
$ca_media_url_root = null;
$ca_media_root_dir = null;
$conf_path = dirname(__DIR__, 2).'/app/conf/global.conf';
if (file_exists($conf_path) && is_readable($conf_path)) {
foreach (file($conf_path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line) {
$line = trim($line);
if (!$line || ($line[0] === '#')) { continue; }
if (preg_match('/^ca_media_url_root\s*=\s*(.+)$/', $line, $m)) {
$ca_media_url_root = trim($m[1]);
}
if (preg_match('/^ca_media_root_dir\s*=\s*(.+)$/', $line, $m)) {
$ca_media_root_dir = trim($m[1]);
}
}
}

foreach ($sp as $i => $s) {
if ($s === $fp[0]) {
$sp = array_slice($sp, 0, $i);
break;
}
$resolved_path = null;
if ($ca_media_url_root && $ca_media_root_dir) {
$ca_media_url_root = rtrim(trim($ca_media_url_root, " \t\n\r\0\x0B\"'"), '/');
$ca_media_root_dir = rtrim(trim($ca_media_root_dir, " \t\n\r\0\x0B\"'"), '/');
$path_candidates = [];
if (($ca_media_url_root !== '') && (strpos($public_path, $ca_media_url_root.'/') === 0)) {
$relative_media_path = substr($public_path, strlen($ca_media_url_root));
$path_candidates[] = $ca_media_root_dir.$relative_media_path.'.tpc';
}
$path_candidates[] = $ca_media_root_dir.$public_path.'.tpc';
foreach ($path_candidates as $candidate) {
if ($candidate && file_exists($candidate)) {
$resolved_path = $candidate;
break;
}
}
}
$script_path = $win_disk."/".join("/", $sp);
$filepath = preg_replace("/[^A-Za-z0-9_\-\/]/", "", $filepath);

if (file_exists("{$script_path}{$filepath}.tpc")) {
if ($resolved_path && ($tile > 0)) {
header("Content-type: image/jpeg");
$output = caTilepicGetTileQuickly($script_path."/".$filepath.".tpc", $tile);
$output = caTilepicGetTileQuickly($resolved_path, $tile);
if ($output === false) {
http_response_code(404);
die("Invalid tile");
}
header("Content-Length: ".strlen($output));
print $output;
exit;
} else {
die("Invalid file");
}

http_response_code(404);
die("Invalid file");

# ------------------------------------------------------------------------------------
# Utilities
# ---------
Expand Down