inets: httpd - Sanity check of content-length header

Gracefully handle invalid content-lenght headers instead of
crashing in list_to_integer.

1 files changed, 16 insertions, 10 deletions

diff --git a/lib/inets/src/http_lib/http_request.erl b/lib/inets/src/http_lib/http_request.erl
index f295453bdd..a0833ddf01 100644
--- a/lib/inets/src/http_lib/http_request.erl
+++ b/lib/inets/src/http_lib/http_request.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2005-2014. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2015. All Rights Reserved.
 %% 
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -21,8 +21,16 @@
 
 -include("http_internal.hrl").
 
--export([headers/2, http_headers/1, is_absolut_uri/1]).
+-export([headers/2, http_headers/1, is_absolut_uri/1, key_value/1]).
 
+
+key_value(KeyValueStr) ->
+    case lists:splitwith(fun($:) -> false; (_) -> true end, KeyValueStr) of
+	{Key, [$: | Value]} ->
+	    {http_util:to_lower(string:strip(Key)),  string:strip(Value)};
+	{_, []} -> 
+	    undefined
+    end.
 %%-------------------------------------------------------------------------
 %% headers(HeaderList, #http_request_h{}) -> #http_request_h{}
 %%   HeaderList - ["HeaderField:Value"]     	
@@ -34,14 +42,12 @@
 %%-------------------------------------------------------------------------
 headers([], Headers) ->
     Headers;
-headers([Header | Tail], Headers) ->  
-    case lists:splitwith(fun($:) -> false; (_) -> true end, Header) of
-	{Key, [$: | Value]}  ->
-	    headers(Tail, headers(http_util:to_lower(string:strip(Key)), 
-				  string:strip(Value), Headers));
-	{_, []} -> 
-	    headers(Tail, Headers)
-    end.
+headers([{Key, Value} | Tail], Headers) ->  
+    headers(Tail, headers(Key, Value, Headers));
+headers([undefined], Headers) -> 
+    Headers;
+headers(KeyValues, Headers) -> 
+    headers([key_value(KeyValue) || KeyValue <-  KeyValues], Headers).
 
 %%-------------------------------------------------------------------------
 %% headers(#http_request_h{}) -> HeaderList