X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/36bde473fdfeb75de65fb7b1920a6fb137f32f3c..8ab2aa9fd51a89e06d92a4f7c3792aaa4a08cc71:/lib/url.c

diff --git a/lib/url.c b/lib/url.c
index 784ee9f..7ee1f45 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -1,31 +1,26 @@
 /*
  * This file is part of DisOrder
- * Copyright (C) 2007 Richard Kettlewell
+ * Copyright (C) 2007, 2008 Richard Kettlewell
  *
- * This program is free software; you can redistribute it and/or modify
+ * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 /** @file lib/url.c
  * @brief URL support functions
  */
 
-#include <config.h>
-#include "types.h"
+#include "common.h"
 
-#include <stdio.h>
-#include <stdlib.h>
 #include <errno.h>
 
 #include "mem.h"
@@ -35,19 +30,24 @@
 #include "kvp.h"
 
 /** @brief Infer the for the web interface
+ * @param include_path_info 1 to include post-script path, else 0
  * @return Inferred URL
  *
  * See <a href="http://tools.ietf.org/html/rfc3875">RFC 3875</a>.
  */
-char *infer_url(void) {
-  const char *scheme = "http", *server, *script, *e;
+char *infer_url(int include_path_info) {
+  const char *scheme = "http", *server, *script, *e, *request_uri, *path_info;
   char *url;
   int port;
+
+  /* mod_ssl sets HTTPS=on if the scheme is https */
+  if((e = getenv("HTTPS")) && !strcmp(e, "on"))
+    scheme = "https";
   
   /* Figure out the server.  'MUST' be set and we don't cope if it
    * is not. */
   if(!(server = getenv("SERVER_NAME")))
-    fatal(0, "SERVER_NAME is not set");
+    disorder_fatal(0, "SERVER_NAME is not set");
   server = xstrdup(server);
   
   /* Figure out the port.  'MUST' be set but we cope if it is not. */
@@ -56,11 +56,29 @@ char *infer_url(void) {
   else
     port = 80;
   
-  /* Figure out path to ourselves */
-  if(!(script = getenv("SCRIPT_NAME")))
-    fatal(0, "SCRIPT_NAME is not set");
+  /* Figure out path to ourselves. */
+  if(include_path_info && (request_uri = getenv("REQUEST_URI"))) {
+    /* REQUEST_URI is an Apache extexnsion.  If it's available it results in
+     * more accurate self-referencing URLs.  */
+    if((e = strchr(request_uri, '?')))
+      script = xstrndup(request_uri, e - request_uri);
+    else
+      script = xstrdup(request_uri);
+  } else {
+    /* RFC3875 s4.1.13 */
+    if(!(script = getenv("SCRIPT_NAME")))
+      disorder_fatal(0, "SCRIPT_NAME is not set");
+    /* SCRIPT_NAME may be "" */
+    if(!*script)
+      script = "/";
+    /* SCRIPT_NAME is not URL-encoded */
+    script = urlencodestring(script);
+    if(include_path_info && (path_info = getenv("PATH_INFO")))
+      byte_xasprintf((char **)&script, "%s%s",
+                     script, urlencodestring(path_info));
+  }
   if(script[0] != '/')
-    fatal(0, "SCRIPT_NAME does not start with a '/'");
+    disorder_fatal(0, "SCRIPT_NAME does not start with a '/'");
   script = xstrdup(script);
   
   if(port == 80)