0001-Potential-fix-for-2438.patch

From 61dbe66f45a86d5519bf25e403caf34f60ad9dd8 Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Thu, 29 Dec 2011 16:06:14 -0800
Subject: [PATCH] Potential fix for #2438

---
 src/node_http_parser.cc |   33 +++++++++++++++++++++++++++++++++
 1 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/src/node_http_parser.cc b/src/node_http_parser.cc
index 38251a1..1c39a12 100644
--- a/src/node_http_parser.cc
+++ b/src/node_http_parser.cc
@@ -179,6 +179,19 @@ struct StringPtr {
   }
 
 
+  // If str_ does not point to a heap string yet, this function makes it do
+  // so. This is called at the end of each http_parser_execute() so as not
+  // to leak references. See issue #2438 and test-http-parser-bad-ref.js.
+  void Save() {
+    if (!on_heap_) {
+      char* s = new char[size_];
+      memcpy(s, str_, size_);
+      str_ = s;
+      on_heap_ = true;
+    }
+  }
+
+
   void Reset() {
     if (on_heap_) {
       delete[] str_;
@@ -287,6 +300,8 @@ public:
   HTTP_CB(on_headers_complete) {
     Local<Value> cb = handle_->Get(on_headers_complete_sym);
 
+    headers_complete_ = true;
+
     if (!cb->IsFunction())
       return 0;
 
@@ -401,6 +416,19 @@ public:
   }
 
 
+  void Save() {
+    url_.Save();
+
+    for (int i = 0; i < num_fields_; i++) {
+      fields_[i].Save();
+    }
+
+    for (int i = 0; i < num_values_; i++) {
+      values_[i].Save();
+    }
+  }
+
+
   // var bytesParsed = parser->execute(buffer, off, len);
   static Handle<Value> Execute(const Arguments& args) {
     HandleScope scope;
@@ -447,6 +475,9 @@ public:
     size_t nparsed =
       http_parser_execute(&parser->parser_, &settings, buffer_data + off, len);
 
+    if (!parser->headers_complete_)
+      parser->Save();
+
     // Unassign the 'buffer_' variable
     assert(current_buffer);
     current_buffer = NULL;
@@ -557,6 +588,7 @@ private:
     num_values_ = -1;
     have_flushed_ = false;
     got_exception_ = false;
+    headers_complete_ = false;
   }
 
 
@@ -568,6 +600,7 @@ private:
   int num_values_;
   bool have_flushed_;
   bool got_exception_;
+  bool headers_complete_;
 };
 
 
-- 
1.7.6