From ec33fbecc89649d839c8530c571b89c3ab86aaa5 Mon Sep 17 00:00:00 2001
From: "bzbarsky%mit.edu" <bzbarsky%mit.edu>
Date: Tue, 2 Jul 2002 00:08:46 +0000
Subject: [PATCH] Expose document.referrer for image documents.  Bug 155052,
 r=sicking, sr=jst

---
 content/html/document/src/nsImageDocument.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/content/html/document/src/nsImageDocument.cpp b/content/html/document/src/nsImageDocument.cpp
index eb3e8ed55628..e508f684e7a7 100644
--- a/content/html/document/src/nsImageDocument.cpp
+++ b/content/html/document/src/nsImageDocument.cpp
@@ -276,6 +276,18 @@ nsImageDocument::StartDocumentLoad(const char* aCommand,
     return rv;
   }
 
+  nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel);
+  if (httpChannel) {
+    // The misspelled key 'referer' is as per the HTTP spec
+    nsCAutoString referrerHeader;
+    rv = httpChannel->GetRequestHeader(NS_LITERAL_CSTRING("referer"),
+                                       referrerHeader);
+    
+    if (NS_SUCCEEDED(rv)) {
+      SetReferrer(NS_ConvertASCIItoUCS2(referrerHeader));
+    }
+  }
+
   // Create synthetic document
   rv = CreateSyntheticDocument();
   if (NS_OK != rv) {