From c3f50734961df57650373fe722751317cc7a78a8 Mon Sep 17 00:00:00 2001
From: Christian Mazakas <christian.mazakas@gmail.com>
Date: Thu, 8 Feb 2024 10:32:10 -0800
Subject: [PATCH] field verification uses internal linkage

---
 src/fields_base.cpp       | 30 +++++++++++++-----------------
 test/unit/fields_base.cpp |  7 ++++---
 2 files changed, 17 insertions(+), 20 deletions(-)

diff --git a/src/fields_base.cpp b/src/fields_base.cpp
index aabfc300..5aeb03b1 100644
--- a/src/fields_base.cpp
+++ b/src/fields_base.cpp
@@ -21,6 +21,8 @@
 #include <boost/assert.hpp>
 #include <boost/assert/source_location.hpp>
 
+#include <boost/core/detail/string_view.hpp>
+
 #include <boost/system/result.hpp>
 
 #include <boost/url/grammar/ci_string.hpp>
@@ -34,27 +36,25 @@
 namespace boost {
 namespace http_proto {
 
-system::result<typename detail::field_name_rule_t::value_type>
+static
+system::result<core::string_view>
 verify_field_name(
     core::string_view name)
 {
-    auto it = name.begin();
-    auto end = name.end();
     auto rv =
-        grammar::parse(it, end, detail::field_name_rule);
+        grammar::parse(name, detail::field_name_rule);
     if( rv.has_error() )
     {
-        if( rv.error() == condition::need_more_input )
+        auto ec = rv.error();
+        if( ec == urls::grammar::error::leftover )
+            return error::bad_field_name;
+        if( ec == condition::need_more_input )
             return error::bad_field_name;
-        return rv.error();
     }
-
-    if( it != end )
-        return error::bad_field_name;
-
-    return rv.value();
+    return rv;
 }
 
+static
 system::result<typename detail::field_value_rule_t::value_type>
 verify_field_value(
     core::string_view value)
@@ -70,8 +70,7 @@ verify_field_value(
         return rv.error();
     }
 
-    auto v = rv.value();
-    if( v.has_crlf )
+    if( rv->has_crlf )
         return error::bad_field_smuggle;
 
     if( it != end )
@@ -880,11 +879,8 @@ insert_impl(
     if( rv.has_error() )
         return rv.error();
 
-    value = rv->value;
-    bool has_obs_fold = rv->has_obs_fold;
     insert_impl_unchecked(
-        id, name, value, before, has_obs_fold);
-
+        id, name, rv->value, before, rv->has_obs_fold);
     return {};
 }
 
diff --git a/test/unit/fields_base.cpp b/test/unit/fields_base.cpp
index eca22a52..bbec9f11 100644
--- a/test/unit/fields_base.cpp
+++ b/test/unit/fields_base.cpp
@@ -462,9 +462,10 @@ struct fields_base_test
                 BOOST_TEST(rv.has_error());
                 BOOST_TEST(rv.error() == error::bad_field_name);
 
-                std::vector<char const *> strs = {"\r\nABC", "\rABC", "A\rBC",
-                                                  "ABC\r",   "\nABC", "A\nBC",
-                                                  "ABC\n",   "\r",    "\n"};
+                std::vector<char const *> strs = {
+                    "\r\nABC", "\rABC", "A\rBC",
+                    "ABC\r",   "\nABC", "A\nBC",
+                    "ABC\n",   "\r",    "\n"};
 
                 for (auto const str : strs)
                 {