real api and clearer separation between server and client

[syp.git] / inc / utils.php

diff --git a/inc/utils.php b/inc/utils.php
index 50eb995f29f484cb9fa59920bde03a1d0375da95..a0824c8dea4293d218717c16714a3dfecef26edf 100644 (file)
--- a/inc/utils.php
+++ b/inc/utils.php
@@ -2,6 +2,8 @@
 /* Copyright (c) 2009 Arnaud Renevier, Inc, published under the modified BSD
    license. */
 
+require_once ("inc/settings.php");
+
 function unquote($gpc_str) {
    if (!isset ($gpc_str)) {
        return $gpc_str;
@@ -12,4 +14,52 @@ function unquote($gpc_str) {
        return $gpc_str;
    }
 }
+
+function full_url_from_filename ($filename) {
+    if (defined ("IMGSDIRURL") && (strlen (IMGSDIRURL) != 0)) {
+        return rtrim (IMGSDIRURL, '/') . "/" . rawurlencode ($filename);
+    }
+
+    $rel_path = UPLOADDIR . "/" . rawurlencode ($filename);
+
+    while (substr($rel_path, 0, 2) == "./") { // strips ./
+        $rel_path = substr ($rel_path, 2);
+    }
+
+    if ($rel_path [0] == "/") {
+        $path = $rel_path;
+    } else {
+        $script_dir = dirname ($_SERVER ["SCRIPT_NAME"]);
+        while ((substr ($rel_path, 0, 3) == "../") &&
+                (strlen($script_dir) != 0)) {
+            $rel_path = substr ($rel_path, 3);
+            while (substr($rel_path, 0, 2) == "./") {
+                $rel_path = substr ($rel_path, 2);
+            }
+             $script_dir = substr ($script_dir, 0, strrpos ($script_dir, "/"));
+        }
+        if ((strlen ($script_dir) == 0) && (substr ($rel_path, 0, 3) == "../")) {
+            return null;
+        }
+        $path = "$script_dir/$rel_path";
+    }
+
+    $host = $_SERVER ["HTTP_HOST"];
+    $port = $_SERVER ["SERVER_PORT"];
+    if ($_SERVER ["HTTPS"] == "on") {
+        $proto = "https";
+    } else {
+        $proto = "http";
+    }
+
+    if (($port == "80" && $proto == "http") ||
+        ($port == "443" && $proto == "https")) {
+        $port = "";
+    } else {
+        $port = ":$port";
+    }
+
+    return "$proto://$host$port$path";
+}
+
 ?>