deps: update llhttp to 5.1.0

PR-URL: #38146
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Daniele Belardi <dwon.dnl@gmail.com>

deps/llhttp/README.md

@@ -1,4 +1,5 @@
 # llhttp
+[![CI](https://github.com/nodejs/llhttp/workflows/CI/badge.svg)](https://github.com/nodejs/llhttp/actions?query=workflow%3ACI)
 
 Port of [http_parser][0] to [llparse][1].
 
@@ -31,7 +32,7 @@ So far llhttp outperforms http_parser:
 
 |                 | input size |  bandwidth   |  reqs/sec  |   time  |
 |:----------------|-----------:|-------------:|-----------:|--------:|
-| **llhttp**      | 8192.00 mb | 1777.24 mb/s | 3583799.39 ops/sec | 4.61 s |
+| **llhttp**      | 8192.00 mb | 1777.24 mb/s | 3583799.39 req/sec | 4.61 s |
 | **http_parser** | 8192.00 mb | 694.66 mb/s | 1406180.33 req/sec | 11.79 s |
 
 llhttp is faster by approximately **156%**.
@@ -92,6 +93,11 @@ if (err == HPE_OK) {
 
 ---
 
+### Bindings to other languages
+
+* Python: [pallas/pyllhttp][8]
+* Ruby: [metabahn/llhttp][9]
+
 #### LICENSE
 
 This software is licensed under the MIT License.
@@ -125,3 +131,5 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 [5]: https://llvm.org/docs/LangRef.html#call-instruction
 [6]: https://clang.llvm.org/
 [7]: https://github.com/nodejs/node
+[8]: https://github.com/pallas/pyllhttp
+[9]: https://github.com/metabahn/llhttp

deps/llhttp/include/llhttp.h

@@ -1,9 +1,9 @@
 #ifndef INCLUDE_LLHTTP_H_
 #define INCLUDE_LLHTTP_H_
 
-#define LLHTTP_VERSION_MAJOR 2
+#define LLHTTP_VERSION_MAJOR 5
 #define LLHTTP_VERSION_MINOR 1
-#define LLHTTP_VERSION_PATCH 3
+#define LLHTTP_VERSION_PATCH 0
 
 #ifndef LLHTTP_STRICT_MODE
 # define LLHTTP_STRICT_MODE 0
@@ -33,10 +33,11 @@ struct llhttp__internal_s {
   uint8_t http_major;
   uint8_t http_minor;
   uint8_t header_state;
-  uint16_t flags;
+  uint8_t lenient_flags;
   uint8_t upgrade;
-  uint16_t status_code;
   uint8_t finish;
+  uint16_t flags;
+  uint16_t status_code;
   void* settings;
 };
 
@@ -78,7 +79,8 @@ enum llhttp_errno {
   HPE_CB_CHUNK_COMPLETE = 20,
   HPE_PAUSED = 21,
   HPE_PAUSED_UPGRADE = 22,
-  HPE_USER = 23
+  HPE_PAUSED_H2_UPGRADE = 23,
+  HPE_USER = 24
 };
 typedef enum llhttp_errno llhttp_errno_t;
 
@@ -91,11 +93,17 @@ enum llhttp_flags {
   F_CONTENT_LENGTH = 0x20,
   F_SKIPBODY = 0x40,
   F_TRAILING = 0x80,
-  F_LENIENT = 0x100,
   F_TRANSFER_ENCODING = 0x200
 };
 typedef enum llhttp_flags llhttp_flags_t;
 
+enum llhttp_lenient_flags {
+  LENIENT_HEADERS = 0x1,
+  LENIENT_CHUNKED_LENGTH = 0x2,
+  LENIENT_KEEP_ALIVE = 0x4
+};
+typedef enum llhttp_lenient_flags llhttp_lenient_flags_t;
+
 enum llhttp_type {
   HTTP_BOTH = 0,
   HTTP_REQUEST = 1,
@@ -145,7 +153,18 @@ enum llhttp_method {
   HTTP_LINK = 31,
   HTTP_UNLINK = 32,
   HTTP_SOURCE = 33,
-  HTTP_PRI = 34
+  HTTP_PRI = 34,
+  HTTP_DESCRIBE = 35,
+  HTTP_ANNOUNCE = 36,
+  HTTP_SETUP = 37,
+  HTTP_PLAY = 38,
+  HTTP_PAUSE = 39,
+  HTTP_TEARDOWN = 40,
+  HTTP_GET_PARAMETER = 41,
+  HTTP_SET_PARAMETER = 42,
+  HTTP_REDIRECT = 43,
+  HTTP_RECORD = 44,
+  HTTP_FLUSH = 45
 };
 typedef enum llhttp_method llhttp_method_t;
 
@@ -173,7 +192,8 @@ typedef enum llhttp_method llhttp_method_t;
   XX(20, CB_CHUNK_COMPLETE, CB_CHUNK_COMPLETE) \
   XX(21, PAUSED, PAUSED) \
   XX(22, PAUSED_UPGRADE, PAUSED_UPGRADE) \
-  XX(23, USER, USER) \
+  XX(23, PAUSED_H2_UPGRADE, PAUSED_H2_UPGRADE) \
+  XX(24, USER, USER) \
 
 
 #define HTTP_METHOD_MAP(XX) \
@@ -212,6 +232,17 @@ typedef enum llhttp_method llhttp_method_t;
   XX(32, UNLINK, UNLINK) \
   XX(33, SOURCE, SOURCE) \
   XX(34, PRI, PRI) \
+  XX(35, DESCRIBE, DESCRIBE) \
+  XX(36, ANNOUNCE, ANNOUNCE) \
+  XX(37, SETUP, SETUP) \
+  XX(38, PLAY, PLAY) \
+  XX(39, PAUSE, PAUSE) \
+  XX(40, TEARDOWN, TEARDOWN) \
+  XX(41, GET_PARAMETER, GET_PARAMETER) \
+  XX(42, SET_PARAMETER, SET_PARAMETER) \
+  XX(43, REDIRECT, REDIRECT) \
+  XX(44, RECORD, RECORD) \
+  XX(45, FLUSH, FLUSH) \
 
 
 
@@ -227,6 +258,12 @@ extern "C" {
 #endif
 #include <stddef.h>
 
+#if defined(__wasm__)
+#define LLHTTP_EXPORT __attribute__((visibility("default")))
+#else
+#define LLHTTP_EXPORT
+#endif
+
 typedef llhttp__internal_t llhttp_t;
 typedef struct llhttp_settings_s llhttp_settings_t;
 
@@ -264,13 +301,59 @@ struct llhttp_settings_s {
    */
   llhttp_cb      on_chunk_header;
   llhttp_cb      on_chunk_complete;
+
+  llhttp_cb      on_url_complete;
+  llhttp_cb      on_status_complete;
+  llhttp_cb      on_header_field_complete;
+  llhttp_cb      on_header_value_complete;
 };
 
-/* Initialize the parser with specific type and user settings */
+/* Initialize the parser with specific type and user settings.
+ *
+ * NOTE: lifetime of `settings` has to be at least the same as the lifetime of
+ * the `parser` here. In practice, `settings` has to be either a static
+ * variable or be allocated with `malloc`, `new`, etc.
+ */
+LLHTTP_EXPORT
 void llhttp_init(llhttp_t* parser, llhttp_type_t type,
                  const llhttp_settings_t* settings);
 
+#if defined(__wasm__)
+
+LLHTTP_EXPORT
+llhttp_t* llhttp_alloc(llhttp_type_t type);
+
+LLHTTP_EXPORT
+void llhttp_free(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_type(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_http_major(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_http_minor(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_method(llhttp_t* parser);
+
+LLHTTP_EXPORT
+int llhttp_get_status_code(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_upgrade(llhttp_t* parser);
+
+#endif  // defined(__wasm__)
+
+/* Reset an already initialized parser back to the start state, preserving the
+ * existing parser type, callback settings, user data, and lenient flags.
+ */
+LLHTTP_EXPORT
+void llhttp_reset(llhttp_t* parser);
+
 /* Initialize the settings object */
+LLHTTP_EXPORT
 void llhttp_settings_init(llhttp_settings_t* settings);
 
 /* Parse full or partial request/response, invoking user callbacks along the
@@ -289,6 +372,7 @@ void llhttp_settings_init(llhttp_settings_t* settings);
  * to return the same error upon each successive call up until `llhttp_init()`
  * is called.
  */
+LLHTTP_EXPORT
 llhttp_errno_t llhttp_execute(llhttp_t* parser, const char* data, size_t len);
 
 /* This method should be called when the other side has no further bytes to
@@ -299,16 +383,19 @@ llhttp_errno_t llhttp_execute(llhttp_t* parser, const char* data, size_t len);
  * connection. This method will invoke `on_message_complete()` callback if the
  * request was terminated safely. Otherwise a error code would be returned.
  */
+LLHTTP_EXPORT
 llhttp_errno_t llhttp_finish(llhttp_t* parser);
 
 /* Returns `1` if the incoming message is parsed until the last byte, and has
  * to be completed by calling `llhttp_finish()` on EOF
  */
+LLHTTP_EXPORT
 int llhttp_message_needs_eof(const llhttp_t* parser);
 
 /* Returns `1` if there might be any other messages following the last that was
  * successfully parsed.
  */
+LLHTTP_EXPORT
 int llhttp_should_keep_alive(const llhttp_t* parser);
 
 /* Make further calls of `llhttp_execute()` return `HPE_PAUSED` and set
@@ -317,50 +404,59 @@ int llhttp_should_keep_alive(const llhttp_t* parser);
  * Important: do not call this from user callbacks! User callbacks must return
  * `HPE_PAUSED` if pausing is required.
  */
+LLHTTP_EXPORT
 void llhttp_pause(llhttp_t* parser);
 
 /* Might be called to resume the execution after the pause in user's callback.
  * See `llhttp_execute()` above for details.
  *
  * Call this only if `llhttp_execute()` returns `HPE_PAUSED`.
  */
+LLHTTP_EXPORT
 void llhttp_resume(llhttp_t* parser);
 
 /* Might be called to resume the execution after the pause in user's callback.
  * See `llhttp_execute()` above for details.
  *
  * Call this only if `llhttp_execute()` returns `HPE_PAUSED_UPGRADE`
  */
+LLHTTP_EXPORT
 void llhttp_resume_after_upgrade(llhttp_t* parser);
 
 /* Returns the latest return error */
+LLHTTP_EXPORT
 llhttp_errno_t llhttp_get_errno(const llhttp_t* parser);
 
 /* Returns the verbal explanation of the latest returned error.
  *
  * Note: User callback should set error reason when returning the error. See
  * `llhttp_set_error_reason()` for details.
  */
+LLHTTP_EXPORT
 const char* llhttp_get_error_reason(const llhttp_t* parser);
 
 /* Assign verbal description to the returned error. Must be called in user
  * callbacks right before returning the errno.
  *
  * Note: `HPE_USER` error code might be useful in user callbacks.
  */
+LLHTTP_EXPORT
 void llhttp_set_error_reason(llhttp_t* parser, const char* reason);
 
 /* Returns the pointer to the last parsed byte before the returned error. The
  * pointer is relative to the `data` argument of `llhttp_execute()`.
  *
  * Note: this method might be useful for counting the number of parsed bytes.
  */
+LLHTTP_EXPORT
 const char* llhttp_get_error_pos(const llhttp_t* parser);
 
 /* Returns textual name of error code */
+LLHTTP_EXPORT
 const char* llhttp_errno_name(llhttp_errno_t err);
 
 /* Returns textual name of HTTP method */
+LLHTTP_EXPORT
 const char* llhttp_method_name(llhttp_method_t method);
 
 
@@ -373,7 +469,36 @@ const char* llhttp_method_name(llhttp_method_t method);
  *
  * **(USE AT YOUR OWN RISK)**
  */
-void llhttp_set_lenient(llhttp_t* parser, int enabled);
+LLHTTP_EXPORT
+void llhttp_set_lenient_headers(llhttp_t* parser, int enabled);
+
+
+/* Enables/disables lenient handling of conflicting `Transfer-Encoding` and
+ * `Content-Length` headers (disabled by default).
+ *
+ * Normally `llhttp` would error when `Transfer-Encoding` is present in
+ * conjunction with `Content-Length`. This error is important to prevent HTTP
+ * request smuggling, but may be less desirable for small number of cases
+ * involving legacy servers.
+ *
+ * **(USE AT YOUR OWN RISK)**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_chunked_length(llhttp_t* parser, int enabled);
+
+
+/* Enables/disables lenient handling of `Connection: close` and HTTP/1.0
+ * requests responses.
+ *
+ * Normally `llhttp` would error on (in strict mode) or discard (in loose mode)
+ * the HTTP request/response after the request/response with `Connection: close`
+ * and `Content-Length`. This is important to prevent cache poisoning attacks,
+ * but might interact badly with outdated and insecure clients. With this flag
+ * the extra request/response will be parsed normally.
+ *
+ * **(USE AT YOUR OWN RISK)**
+ */
+void llhttp_set_lenient_keep_alive(llhttp_t* parser, int enabled);
 
 #ifdef __cplusplus
 }  /* extern "C" */