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Don't allocate memory to handle obs-fold

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Vinnie Falco committed 2017-07-20 08:12:19 -07:00
1 parent add95d6ef6
commit 87c6e69d9f
6 files changed
+42 -17
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include/beast/http/impl/basic_parser.ipp
+24 -14
View File
@@ -8,6 +8,7 @@
#ifndef BEAST_HTTP_IMPL_BASIC_PARSER_IPP
#define BEAST_HTTP_IMPL_BASIC_PARSER_IPP
#include <beast/core/static_string.hpp>
#include <beast/core/type_traits.hpp>
#include <beast/core/detail/ci_char_traits.hpp>
#include <beast/core/detail/clamp.hpp>
@@ -701,25 +702,34 @@ parse_fields(char const*& p,
if(ec)
return;
}
std::string s;
if(p != term)
// https://stackoverflow.com/questions/686217/maximum-on-http-header-values
static_string<max_obs_fold> s;
try
{
s.append(p, term - 2);
p = term;
for(;;)
if(p != term)
{
if(*p != ' ' && *p != '\t')
break;
s.push_back(' ');
detail::skip_ows(p, term - 2);
term = find_eol(p, last, ec);
if(ec)
return;
if(p != term - 2)
s.append(p, term - 2);
s.append(p, term - 2);
p = term;
for(;;)
{
if(*p != ' ' && *p != '\t')
break;
s.push_back(' ');
detail::skip_ows(p, term - 2);
term = find_eol(p, last, ec);
if(ec)
return;
if(p != term - 2)
s.append(p, term - 2);
p = term;
}
}
}
catch(std::length_error const&)
{
ec = error::bad_obs_fold;
return;
}
auto const f = string_to_field(name);
string_view const value{s.data(), s.size()};
do_field(f, value, ec);