deps: update llhttp to 6.0.4

Refs: https://hackerone.com/reports/1238099
Refs: https://hackerone.com/reports/1238709
Refs: nodejs-private/llhttp-private#6
Refs: nodejs-private/llhttp-private#5
CVE-ID: CVE-2021-22959
CVE-ID: CVE-2021-22960

PR-URL: nodejs-private/node-private#284
Reviewed-By: Akshay K <iit.akshay@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>

deps/llhttp/CMakeLists.txt

@@ -0,0 +1,53 @@
+cmake_minimum_required(VERSION 3.5.1)
+cmake_policy(SET CMP0069 NEW)
+
+project(llhttp C)
+
+set(CMAKE_C_STANDARD 99)
+
+#
+# Options
+#
+# Generic option
+option(BUILD_SHARED_LIBS "Build shared libraries (.dll/.so) instead of static ones (.lib/.a)" OFF)
+
+# Source code
+set(LLHTTP_SOURCES
+  src/llhttp.c
+  src/http.c
+  src/api.c
+)
+
+set(LLHTTP_HEADERS
+  include/llhttp.h
+)
+
+add_library(llhttp)
+add_library(llhttp::llhttp ALIAS llhttp)
+
+target_sources(llhttp PRIVATE ${LLHTTP_SOURCES} ${LLHTTP_HEADERS})
+
+# On windows with Visual Studio, add a debug postfix so that release
+# and debug libraries can coexist.
+if(MSVC)
+  set(CMAKE_DEBUG_POSTFIX "d")
+endif()
+
+target_include_directories(llhttp PUBLIC
+  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:include>
+)
+
+set_target_properties(llhttp PROPERTIES PUBLIC_HEADER ${LLHTTP_HEADERS})
+
+install(TARGETS llhttp
+        EXPORT llhttp
+        ARCHIVE DESTINATION lib
+        PUBLIC_HEADER DESTINATION include/
+)
+
+# This is required to work with FetchContent
+install(EXPORT llhttp
+        FILE llhttp-config.cmake
+        NAMESPACE llhttp::
+        DESTINATION lib/cmake/llhttp)

deps/llhttp/README.md

@@ -99,6 +99,20 @@ For more information on API usage, please refer to [src/native/api.h](https://gi
 * Python: [pallas/pyllhttp][8]
 * Ruby: [metabahn/llhttp][9]
 
+
+### Using with CMake
+
+If you want to use this library in a CMake project you can use the snippet below.
+
+```
+FetchContent_Declare(llhttp
+  URL "https://github.com/nodejs/llhttp/releases/download/v6.0.4/llhttp-release-v6.0.4.tar.gz")  # Using version 6.0.4
+
+FetchContent_MakeAvailable(llhttp)
+
+target_link_libraries(${EXAMPLE_PROJECT_NAME} ${PROJECT_LIBRARIES} llhttp ${PROJECT_NAME})
+```
+
 #### LICENSE
 
 This software is licensed under the MIT License.

deps/llhttp/include/llhttp.h

@@ -3,7 +3,7 @@
 
 #define LLHTTP_VERSION_MAJOR 6
 #define LLHTTP_VERSION_MINOR 0
-#define LLHTTP_VERSION_PATCH 2
+#define LLHTTP_VERSION_PATCH 4
 
 #ifndef LLHTTP_STRICT_MODE
 # define LLHTTP_STRICT_MODE 0

deps/llhttp/src/api.c

@@ -46,17 +46,23 @@ extern int wasm_on_url(llhttp_t* p, const char* at, size_t length);
 extern int wasm_on_status(llhttp_t* p, const char* at, size_t length);
 extern int wasm_on_header_field(llhttp_t* p, const char* at, size_t length);
 extern int wasm_on_header_value(llhttp_t* p, const char* at, size_t length);
-extern int wasm_on_headers_complete(llhttp_t * p);
+extern int wasm_on_headers_complete(llhttp_t * p, int status_code,
+                                    uint8_t upgrade, int should_keep_alive);
 extern int wasm_on_body(llhttp_t* p, const char* at, size_t length);
 extern int wasm_on_message_complete(llhttp_t * p);
 
+static int wasm_on_headers_complete_wrap(llhttp_t* p) {
+  return wasm_on_headers_complete(p, p->status_code, p->upgrade,
+                                  llhttp_should_keep_alive(p));
+}
+
 const llhttp_settings_t wasm_settings = {
   wasm_on_message_begin,
   wasm_on_url,
   wasm_on_status,
   wasm_on_header_field,
   wasm_on_header_value,
-  wasm_on_headers_complete,
+  wasm_on_headers_complete_wrap,
   wasm_on_body,
   wasm_on_message_complete,
   NULL,