|
|
|
|
@ -1,4 +1,4 @@
|
|
|
|
|
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
|
|
|
|
|
/* Copyright 2009,2010 Ryan Dahl <ry@tinyclouds.org>
|
|
|
|
|
*
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to
|
|
|
|
|
@ -24,15 +24,9 @@
|
|
|
|
|
extern "C" {
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Also update SONAME in the Makefile whenever you change these. */
|
|
|
|
|
#define HTTP_PARSER_VERSION_MAJOR 2
|
|
|
|
|
#define HTTP_PARSER_VERSION_MINOR 9
|
|
|
|
|
#define HTTP_PARSER_VERSION_PATCH 4
|
|
|
|
|
|
|
|
|
|
#include <stddef.h>
|
|
|
|
|
#if defined(_WIN32) && !defined(__MINGW32__) && \
|
|
|
|
|
(!defined(_MSC_VER) || _MSC_VER<1600) && !defined(__WINE__)
|
|
|
|
|
#include <BaseTsd.h>
|
|
|
|
|
#include <sys/types.h>
|
|
|
|
|
#if defined(_WIN32) && !defined(__MINGW32__)
|
|
|
|
|
typedef __int8 int8_t;
|
|
|
|
|
typedef unsigned __int8 uint8_t;
|
|
|
|
|
typedef __int16 int16_t;
|
|
|
|
|
@ -41,6 +35,9 @@ typedef __int32 int32_t;
|
|
|
|
|
typedef unsigned __int32 uint32_t;
|
|
|
|
|
typedef __int64 int64_t;
|
|
|
|
|
typedef unsigned __int64 uint64_t;
|
|
|
|
|
|
|
|
|
|
typedef unsigned int size_t;
|
|
|
|
|
typedef int ssize_t;
|
|
|
|
|
#else
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#endif
|
|
|
|
|
@ -50,392 +47,229 @@ typedef unsigned __int64 uint64_t;
|
|
|
|
|
*/
|
|
|
|
|
#ifndef HTTP_PARSER_STRICT
|
|
|
|
|
# define HTTP_PARSER_STRICT 1
|
|
|
|
|
#else
|
|
|
|
|
# define HTTP_PARSER_STRICT 0
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Maximium header size allowed. If the macro is not defined
|
|
|
|
|
* before including this header then the default is used. To
|
|
|
|
|
* change the maximum header size, define the macro in the build
|
|
|
|
|
* environment (e.g. -DHTTP_MAX_HEADER_SIZE=<value>). To remove
|
|
|
|
|
* the effective limit on the size of the header, define the macro
|
|
|
|
|
* to a very large number (e.g. -DHTTP_MAX_HEADER_SIZE=0x7fffffff)
|
|
|
|
|
*/
|
|
|
|
|
#ifndef HTTP_MAX_HEADER_SIZE
|
|
|
|
|
# define HTTP_MAX_HEADER_SIZE (80*1024)
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
typedef struct http_parser http_parser;
|
|
|
|
|
typedef struct http_parser_settings http_parser_settings;
|
|
|
|
|
/* Maximium header size allowed */
|
|
|
|
|
#define HTTP_MAX_HEADER_SIZE (80*1024)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Callbacks should return non-zero to indicate an error. The parser will
|
|
|
|
|
* then halt execution.
|
|
|
|
|
*
|
|
|
|
|
* The one exception is on_headers_complete. In a HTTP_RESPONSE parser
|
|
|
|
|
* returning '1' from on_headers_complete will tell the parser that it
|
|
|
|
|
* should not expect a body. This is used when receiving a response to a
|
|
|
|
|
* HEAD request which may contain 'Content-Length' or 'Transfer-Encoding:
|
|
|
|
|
* chunked' headers that indicate the presence of a body.
|
|
|
|
|
*
|
|
|
|
|
* Returning `2` from on_headers_complete will tell parser that it should not
|
|
|
|
|
* expect neither a body nor any futher responses on this connection. This is
|
|
|
|
|
* useful for handling responses to a CONNECT request which may not contain
|
|
|
|
|
* `Upgrade` or `Connection: upgrade` headers.
|
|
|
|
|
*
|
|
|
|
|
* http_data_cb does not return data chunks. It will be called arbitrarily
|
|
|
|
|
* many times for each string. E.G. you might get 10 callbacks for "on_url"
|
|
|
|
|
* each providing just a few characters more data.
|
|
|
|
|
*/
|
|
|
|
|
typedef int (*http_data_cb) (http_parser*, const char *at, size_t length);
|
|
|
|
|
typedef int (*http_cb) (http_parser*);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Status Codes */
|
|
|
|
|
#define HTTP_STATUS_MAP(XX) \
|
|
|
|
|
XX(100, CONTINUE, Continue) \
|
|
|
|
|
XX(101, SWITCHING_PROTOCOLS, Switching Protocols) \
|
|
|
|
|
XX(102, PROCESSING, Processing) \
|
|
|
|
|
XX(200, OK, OK) \
|
|
|
|
|
XX(201, CREATED, Created) \
|
|
|
|
|
XX(202, ACCEPTED, Accepted) \
|
|
|
|
|
XX(203, NON_AUTHORITATIVE_INFORMATION, Non-Authoritative Information) \
|
|
|
|
|
XX(204, NO_CONTENT, No Content) \
|
|
|
|
|
XX(205, RESET_CONTENT, Reset Content) \
|
|
|
|
|
XX(206, PARTIAL_CONTENT, Partial Content) \
|
|
|
|
|
XX(207, MULTI_STATUS, Multi-Status) \
|
|
|
|
|
XX(208, ALREADY_REPORTED, Already Reported) \
|
|
|
|
|
XX(226, IM_USED, IM Used) \
|
|
|
|
|
XX(300, MULTIPLE_CHOICES, Multiple Choices) \
|
|
|
|
|
XX(301, MOVED_PERMANENTLY, Moved Permanently) \
|
|
|
|
|
XX(302, FOUND, Found) \
|
|
|
|
|
XX(303, SEE_OTHER, See Other) \
|
|
|
|
|
XX(304, NOT_MODIFIED, Not Modified) \
|
|
|
|
|
XX(305, USE_PROXY, Use Proxy) \
|
|
|
|
|
XX(307, TEMPORARY_REDIRECT, Temporary Redirect) \
|
|
|
|
|
XX(308, PERMANENT_REDIRECT, Permanent Redirect) \
|
|
|
|
|
XX(400, BAD_REQUEST, Bad Request) \
|
|
|
|
|
XX(401, UNAUTHORIZED, Unauthorized) \
|
|
|
|
|
XX(402, PAYMENT_REQUIRED, Payment Required) \
|
|
|
|
|
XX(403, FORBIDDEN, Forbidden) \
|
|
|
|
|
XX(404, NOT_FOUND, Not Found) \
|
|
|
|
|
XX(405, METHOD_NOT_ALLOWED, Method Not Allowed) \
|
|
|
|
|
XX(406, NOT_ACCEPTABLE, Not Acceptable) \
|
|
|
|
|
XX(407, PROXY_AUTHENTICATION_REQUIRED, Proxy Authentication Required) \
|
|
|
|
|
XX(408, REQUEST_TIMEOUT, Request Timeout) \
|
|
|
|
|
XX(409, CONFLICT, Conflict) \
|
|
|
|
|
XX(410, GONE, Gone) \
|
|
|
|
|
XX(411, LENGTH_REQUIRED, Length Required) \
|
|
|
|
|
XX(412, PRECONDITION_FAILED, Precondition Failed) \
|
|
|
|
|
XX(413, PAYLOAD_TOO_LARGE, Payload Too Large) \
|
|
|
|
|
XX(414, URI_TOO_LONG, URI Too Long) \
|
|
|
|
|
XX(415, UNSUPPORTED_MEDIA_TYPE, Unsupported Media Type) \
|
|
|
|
|
XX(416, RANGE_NOT_SATISFIABLE, Range Not Satisfiable) \
|
|
|
|
|
XX(417, EXPECTATION_FAILED, Expectation Failed) \
|
|
|
|
|
XX(421, MISDIRECTED_REQUEST, Misdirected Request) \
|
|
|
|
|
XX(422, UNPROCESSABLE_ENTITY, Unprocessable Entity) \
|
|
|
|
|
XX(423, LOCKED, Locked) \
|
|
|
|
|
XX(424, FAILED_DEPENDENCY, Failed Dependency) \
|
|
|
|
|
XX(426, UPGRADE_REQUIRED, Upgrade Required) \
|
|
|
|
|
XX(428, PRECONDITION_REQUIRED, Precondition Required) \
|
|
|
|
|
XX(429, TOO_MANY_REQUESTS, Too Many Requests) \
|
|
|
|
|
XX(431, REQUEST_HEADER_FIELDS_TOO_LARGE, Request Header Fields Too Large) \
|
|
|
|
|
XX(451, UNAVAILABLE_FOR_LEGAL_REASONS, Unavailable For Legal Reasons) \
|
|
|
|
|
XX(500, INTERNAL_SERVER_ERROR, Internal Server Error) \
|
|
|
|
|
XX(501, NOT_IMPLEMENTED, Not Implemented) \
|
|
|
|
|
XX(502, BAD_GATEWAY, Bad Gateway) \
|
|
|
|
|
XX(503, SERVICE_UNAVAILABLE, Service Unavailable) \
|
|
|
|
|
XX(504, GATEWAY_TIMEOUT, Gateway Timeout) \
|
|
|
|
|
XX(505, HTTP_VERSION_NOT_SUPPORTED, HTTP Version Not Supported) \
|
|
|
|
|
XX(506, VARIANT_ALSO_NEGOTIATES, Variant Also Negotiates) \
|
|
|
|
|
XX(507, INSUFFICIENT_STORAGE, Insufficient Storage) \
|
|
|
|
|
XX(508, LOOP_DETECTED, Loop Detected) \
|
|
|
|
|
XX(510, NOT_EXTENDED, Not Extended) \
|
|
|
|
|
XX(511, NETWORK_AUTHENTICATION_REQUIRED, Network Authentication Required) \
|
|
|
|
|
|
|
|
|
|
enum http_status
|
|
|
|
|
{
|
|
|
|
|
#define XX(num, name, string) HTTP_STATUS_##name = num,
|
|
|
|
|
HTTP_STATUS_MAP(XX)
|
|
|
|
|
#undef XX
|
|
|
|
|
};
|
|
|
|
|
typedef struct http_parser http_parser;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Request Methods */
|
|
|
|
|
#define HTTP_METHOD_MAP(XX) \
|
|
|
|
|
XX(0, DELETE, DELETE) \
|
|
|
|
|
XX(1, GET, GET) \
|
|
|
|
|
XX(2, HEAD, HEAD) \
|
|
|
|
|
XX(3, POST, POST) \
|
|
|
|
|
XX(4, PUT, PUT) \
|
|
|
|
|
/* pathological */ \
|
|
|
|
|
XX(5, CONNECT, CONNECT) \
|
|
|
|
|
XX(6, OPTIONS, OPTIONS) \
|
|
|
|
|
XX(7, TRACE, TRACE) \
|
|
|
|
|
/* WebDAV */ \
|
|
|
|
|
XX(8, COPY, COPY) \
|
|
|
|
|
XX(9, LOCK, LOCK) \
|
|
|
|
|
XX(10, MKCOL, MKCOL) \
|
|
|
|
|
XX(11, MOVE, MOVE) \
|
|
|
|
|
XX(12, PROPFIND, PROPFIND) \
|
|
|
|
|
XX(13, PROPPATCH, PROPPATCH) \
|
|
|
|
|
XX(14, SEARCH, SEARCH) \
|
|
|
|
|
XX(15, UNLOCK, UNLOCK) \
|
|
|
|
|
XX(16, BIND, BIND) \
|
|
|
|
|
XX(17, REBIND, REBIND) \
|
|
|
|
|
XX(18, UNBIND, UNBIND) \
|
|
|
|
|
XX(19, ACL, ACL) \
|
|
|
|
|
/* subversion */ \
|
|
|
|
|
XX(20, REPORT, REPORT) \
|
|
|
|
|
XX(21, MKACTIVITY, MKACTIVITY) \
|
|
|
|
|
XX(22, CHECKOUT, CHECKOUT) \
|
|
|
|
|
XX(23, MERGE, MERGE) \
|
|
|
|
|
/* upnp */ \
|
|
|
|
|
XX(24, MSEARCH, M-SEARCH) \
|
|
|
|
|
XX(25, NOTIFY, NOTIFY) \
|
|
|
|
|
XX(26, SUBSCRIBE, SUBSCRIBE) \
|
|
|
|
|
XX(27, UNSUBSCRIBE, UNSUBSCRIBE) \
|
|
|
|
|
/* RFC-5789 */ \
|
|
|
|
|
XX(28, PATCH, PATCH) \
|
|
|
|
|
XX(29, PURGE, PURGE) \
|
|
|
|
|
/* CalDAV */ \
|
|
|
|
|
XX(30, MKCALENDAR, MKCALENDAR) \
|
|
|
|
|
/* RFC-2068, section 19.6.1.2 */ \
|
|
|
|
|
XX(31, LINK, LINK) \
|
|
|
|
|
XX(32, UNLINK, UNLINK) \
|
|
|
|
|
/* icecast */ \
|
|
|
|
|
XX(33, SOURCE, SOURCE) \
|
|
|
|
|
|
|
|
|
|
enum http_method
|
|
|
|
|
{
|
|
|
|
|
#define XX(num, name, string) HTTP_##name = num,
|
|
|
|
|
HTTP_METHOD_MAP(XX)
|
|
|
|
|
#undef XX
|
|
|
|
|
{ HTTP_DELETE = 0
|
|
|
|
|
, HTTP_GET
|
|
|
|
|
, HTTP_HEAD
|
|
|
|
|
, HTTP_POST
|
|
|
|
|
, HTTP_PUT
|
|
|
|
|
/* pathological */
|
|
|
|
|
, HTTP_CONNECT
|
|
|
|
|
, HTTP_OPTIONS
|
|
|
|
|
, HTTP_TRACE
|
|
|
|
|
/* webdav */
|
|
|
|
|
, HTTP_COPY
|
|
|
|
|
, HTTP_LOCK
|
|
|
|
|
, HTTP_MKCOL
|
|
|
|
|
, HTTP_MOVE
|
|
|
|
|
, HTTP_PROPFIND
|
|
|
|
|
, HTTP_PROPPATCH
|
|
|
|
|
, HTTP_UNLOCK
|
|
|
|
|
/* subversion */
|
|
|
|
|
, HTTP_REPORT
|
|
|
|
|
, HTTP_MKACTIVITY
|
|
|
|
|
, HTTP_CHECKOUT
|
|
|
|
|
, HTTP_MERGE
|
|
|
|
|
/* upnp */
|
|
|
|
|
, HTTP_MSEARCH
|
|
|
|
|
, HTTP_NOTIFY
|
|
|
|
|
, HTTP_SUBSCRIBE
|
|
|
|
|
, HTTP_UNSUBSCRIBE
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enum http_parser_type { HTTP_REQUEST, HTTP_RESPONSE, HTTP_BOTH };
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Flag values for http_parser.flags field */
|
|
|
|
|
enum flags
|
|
|
|
|
{ F_CHUNKED = 1 << 0
|
|
|
|
|
, F_CONNECTION_KEEP_ALIVE = 1 << 1
|
|
|
|
|
, F_CONNECTION_CLOSE = 1 << 2
|
|
|
|
|
, F_CONNECTION_UPGRADE = 1 << 3
|
|
|
|
|
, F_TRAILING = 1 << 4
|
|
|
|
|
, F_UPGRADE = 1 << 5
|
|
|
|
|
, F_SKIPBODY = 1 << 6
|
|
|
|
|
, F_CONTENTLENGTH = 1 << 7
|
|
|
|
|
, F_TRANSFER_ENCODING = 1 << 8 /* Never set in http_parser.flags */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Map for errno-related constants
|
|
|
|
|
*
|
|
|
|
|
* The provided argument should be a macro that takes 2 arguments.
|
|
|
|
|
*/
|
|
|
|
|
#define HTTP_ERRNO_MAP(XX) \
|
|
|
|
|
/* No error */ \
|
|
|
|
|
XX(OK, "success") \
|
|
|
|
|
\
|
|
|
|
|
/* Callback-related errors */ \
|
|
|
|
|
XX(CB_message_begin, "the on_message_begin callback failed") \
|
|
|
|
|
XX(CB_url, "the on_url callback failed") \
|
|
|
|
|
XX(CB_header_field, "the on_header_field callback failed") \
|
|
|
|
|
XX(CB_header_value, "the on_header_value callback failed") \
|
|
|
|
|
XX(CB_headers_complete, "the on_headers_complete callback failed") \
|
|
|
|
|
XX(CB_body, "the on_body callback failed") \
|
|
|
|
|
XX(CB_message_complete, "the on_message_complete callback failed") \
|
|
|
|
|
XX(CB_status, "the on_status callback failed") \
|
|
|
|
|
XX(CB_chunk_header, "the on_chunk_header callback failed") \
|
|
|
|
|
XX(CB_chunk_complete, "the on_chunk_complete callback failed") \
|
|
|
|
|
\
|
|
|
|
|
/* Parsing-related errors */ \
|
|
|
|
|
XX(INVALID_EOF_STATE, "stream ended at an unexpected time") \
|
|
|
|
|
XX(HEADER_OVERFLOW, \
|
|
|
|
|
"too many header bytes seen; overflow detected") \
|
|
|
|
|
XX(CLOSED_CONNECTION, \
|
|
|
|
|
"data received after completed connection: close message") \
|
|
|
|
|
XX(INVALID_VERSION, "invalid HTTP version") \
|
|
|
|
|
XX(INVALID_STATUS, "invalid HTTP status code") \
|
|
|
|
|
XX(INVALID_METHOD, "invalid HTTP method") \
|
|
|
|
|
XX(INVALID_URL, "invalid URL") \
|
|
|
|
|
XX(INVALID_HOST, "invalid host") \
|
|
|
|
|
XX(INVALID_PORT, "invalid port") \
|
|
|
|
|
XX(INVALID_PATH, "invalid path") \
|
|
|
|
|
XX(INVALID_QUERY_STRING, "invalid query string") \
|
|
|
|
|
XX(INVALID_FRAGMENT, "invalid fragment") \
|
|
|
|
|
XX(LF_EXPECTED, "LF character expected") \
|
|
|
|
|
XX(INVALID_HEADER_TOKEN, "invalid character in header") \
|
|
|
|
|
XX(INVALID_CONTENT_LENGTH, \
|
|
|
|
|
"invalid character in content-length header") \
|
|
|
|
|
XX(UNEXPECTED_CONTENT_LENGTH, \
|
|
|
|
|
"unexpected content-length header") \
|
|
|
|
|
XX(INVALID_CHUNK_SIZE, \
|
|
|
|
|
"invalid character in chunk size header") \
|
|
|
|
|
XX(INVALID_CONSTANT, "invalid constant string") \
|
|
|
|
|
XX(INVALID_INTERNAL_STATE, "encountered unexpected internal state")\
|
|
|
|
|
XX(STRICT, "strict mode assertion failed") \
|
|
|
|
|
XX(PAUSED, "parser is paused") \
|
|
|
|
|
XX(UNKNOWN, "an unknown error occurred") \
|
|
|
|
|
XX(INVALID_TRANSFER_ENCODING, \
|
|
|
|
|
"request has invalid transfer-encoding") \
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Define HPE_* values for each errno value above */
|
|
|
|
|
#define HTTP_ERRNO_GEN(n, s) HPE_##n,
|
|
|
|
|
enum http_errno {
|
|
|
|
|
HTTP_ERRNO_MAP(HTTP_ERRNO_GEN)
|
|
|
|
|
};
|
|
|
|
|
#undef HTTP_ERRNO_GEN
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Get an http_errno value from an http_parser */
|
|
|
|
|
#define HTTP_PARSER_ERRNO(p) ((enum http_errno) (p)->http_errno)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
struct http_parser {
|
|
|
|
|
/** PRIVATE **/
|
|
|
|
|
unsigned int type : 2; /* enum http_parser_type */
|
|
|
|
|
unsigned int flags : 8; /* F_* values from 'flags' enum; semi-public */
|
|
|
|
|
unsigned int state : 7; /* enum state from http_parser.c */
|
|
|
|
|
unsigned int header_state : 7; /* enum header_state from http_parser.c */
|
|
|
|
|
unsigned int index : 5; /* index into current matcher */
|
|
|
|
|
unsigned int extra_flags : 2;
|
|
|
|
|
unsigned int lenient_http_headers : 1;
|
|
|
|
|
unsigned char type : 2;
|
|
|
|
|
unsigned char flags : 6;
|
|
|
|
|
unsigned char state;
|
|
|
|
|
unsigned char header_state;
|
|
|
|
|
unsigned char index;
|
|
|
|
|
|
|
|
|
|
uint32_t nread; /* # bytes read in various scenarios */
|
|
|
|
|
uint64_t content_length; /* # bytes in body (0 if no Content-Length header) */
|
|
|
|
|
uint32_t nread;
|
|
|
|
|
int64_t content_length;
|
|
|
|
|
|
|
|
|
|
/** READ-ONLY **/
|
|
|
|
|
unsigned short http_major;
|
|
|
|
|
unsigned short http_minor;
|
|
|
|
|
unsigned int status_code : 16; /* responses only */
|
|
|
|
|
unsigned int method : 8; /* requests only */
|
|
|
|
|
unsigned int http_errno : 7;
|
|
|
|
|
unsigned short status_code; /* responses only */
|
|
|
|
|
unsigned char method; /* requests only */
|
|
|
|
|
|
|
|
|
|
/* 1 = Upgrade header was present and the parser has exited because of that.
|
|
|
|
|
* 0 = No upgrade header present.
|
|
|
|
|
* Should be checked when http_parser_execute() returns in addition to
|
|
|
|
|
* error checking.
|
|
|
|
|
*/
|
|
|
|
|
unsigned int upgrade : 1;
|
|
|
|
|
char upgrade;
|
|
|
|
|
|
|
|
|
|
/** PUBLIC **/
|
|
|
|
|
void *data; /* A pointer to get hook to the "connection" or "socket" object */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void http_parser_init(http_parser *parser, enum http_parser_type type);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* If http_should_keep_alive() in the on_headers_complete or
|
|
|
|
|
* on_message_complete callback returns true, then this will be should be
|
|
|
|
|
* the last message on the connection.
|
|
|
|
|
* If you are the server, respond with the "Connection: close" header.
|
|
|
|
|
* If you are the client, close the connection.
|
|
|
|
|
*/
|
|
|
|
|
int http_should_keep_alive(http_parser *parser);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Returns a string version of the HTTP method. */
|
|
|
|
|
const char *http_method_str(enum http_method);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/********* Parser Interface 1 *********/
|
|
|
|
|
/* For those who like callbacks */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Callbacks should return non-zero to indicate an error. The parser will
|
|
|
|
|
* then halt execution.
|
|
|
|
|
*
|
|
|
|
|
* The one exception is on_headers_complete. In a HTTP_RESPONSE parser
|
|
|
|
|
* returning '1' from on_headers_complete will tell the parser that it
|
|
|
|
|
* should not expect a body. This is used when receiving a response to a
|
|
|
|
|
* HEAD request which may contain 'Content-Length' or 'Transfer-Encoding:
|
|
|
|
|
* chunked' headers that indicate the presence of a body.
|
|
|
|
|
*
|
|
|
|
|
* http_data_cb does not return data chunks. It will be call arbitrarally
|
|
|
|
|
* many times for each string. E.G. you might get 10 callbacks for "on_path"
|
|
|
|
|
* each providing just a few characters more data.
|
|
|
|
|
*/
|
|
|
|
|
typedef int (*http_data_cb) (http_parser*, const char *at, size_t length);
|
|
|
|
|
typedef int (*http_cb) (http_parser*);
|
|
|
|
|
typedef struct http_parser_settings http_parser_settings;
|
|
|
|
|
|
|
|
|
|
struct http_parser_settings {
|
|
|
|
|
http_cb on_message_begin;
|
|
|
|
|
http_data_cb on_path;
|
|
|
|
|
http_data_cb on_query_string;
|
|
|
|
|
http_data_cb on_url;
|
|
|
|
|
http_data_cb on_status;
|
|
|
|
|
http_data_cb on_fragment;
|
|
|
|
|
http_data_cb on_header_field;
|
|
|
|
|
http_data_cb on_header_value;
|
|
|
|
|
http_cb on_headers_complete;
|
|
|
|
|
http_data_cb on_body;
|
|
|
|
|
http_cb on_message_complete;
|
|
|
|
|
/* When on_chunk_header is called, the current chunk length is stored
|
|
|
|
|
* in parser->content_length.
|
|
|
|
|
*/
|
|
|
|
|
http_cb on_chunk_header;
|
|
|
|
|
http_cb on_chunk_complete;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
size_t http_parser_execute(http_parser *parser,
|
|
|
|
|
const http_parser_settings *settings,
|
|
|
|
|
const char *buf,
|
|
|
|
|
size_t buf_len);
|
|
|
|
|
|
|
|
|
|
enum http_parser_url_fields
|
|
|
|
|
{ UF_SCHEMA = 0
|
|
|
|
|
, UF_HOST = 1
|
|
|
|
|
, UF_PORT = 2
|
|
|
|
|
, UF_PATH = 3
|
|
|
|
|
, UF_QUERY = 4
|
|
|
|
|
, UF_FRAGMENT = 5
|
|
|
|
|
, UF_USERINFO = 6
|
|
|
|
|
, UF_MAX = 7
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Result structure for http_parser_parse_url().
|
|
|
|
|
*
|
|
|
|
|
* Callers should index into field_data[] with UF_* values iff field_set
|
|
|
|
|
* has the relevant (1 << UF_*) bit set. As a courtesy to clients (and
|
|
|
|
|
* because we probably have padding left over), we convert any port to
|
|
|
|
|
* a uint16_t.
|
|
|
|
|
*/
|
|
|
|
|
struct http_parser_url {
|
|
|
|
|
uint16_t field_set; /* Bitmask of (1 << UF_*) values */
|
|
|
|
|
uint16_t port; /* Converted UF_PORT string */
|
|
|
|
|
|
|
|
|
|
struct {
|
|
|
|
|
uint16_t off; /* Offset into buffer in which field starts */
|
|
|
|
|
uint16_t len; /* Length of run in buffer */
|
|
|
|
|
} field_data[UF_MAX];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Returns the library version. Bits 16-23 contain the major version number,
|
|
|
|
|
* bits 8-15 the minor version number and bits 0-7 the patch level.
|
|
|
|
|
* Usage example:
|
|
|
|
|
*
|
|
|
|
|
* unsigned long version = http_parser_version();
|
|
|
|
|
* unsigned major = (version >> 16) & 255;
|
|
|
|
|
* unsigned minor = (version >> 8) & 255;
|
|
|
|
|
* unsigned patch = version & 255;
|
|
|
|
|
* printf("http_parser v%u.%u.%u\n", major, minor, patch);
|
|
|
|
|
*/
|
|
|
|
|
unsigned long http_parser_version(void);
|
|
|
|
|
|
|
|
|
|
void http_parser_init(http_parser *parser, enum http_parser_type type);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Initialize http_parser_settings members to 0
|
|
|
|
|
*/
|
|
|
|
|
void http_parser_settings_init(http_parser_settings *settings);
|
|
|
|
|
|
|
|
|
|
/********** Parser Interface 2 **********/
|
|
|
|
|
/** For those who don't like callbacks **/
|
|
|
|
|
/****************************************/
|
|
|
|
|
|
|
|
|
|
/* Executes the parser. Returns number of parsed bytes. Sets
|
|
|
|
|
* `parser->http_errno` on error. */
|
|
|
|
|
size_t http_parser_execute(http_parser *parser,
|
|
|
|
|
const http_parser_settings *settings,
|
|
|
|
|
const char *data,
|
|
|
|
|
size_t len);
|
|
|
|
|
|
|
|
|
|
typedef struct http_parser_data http_parser_data;
|
|
|
|
|
|
|
|
|
|
/* If http_should_keep_alive() in the on_headers_complete or
|
|
|
|
|
* on_message_complete callback returns 0, then this should be
|
|
|
|
|
* the last message on the connection.
|
|
|
|
|
* If you are the server, respond with the "Connection: close" header.
|
|
|
|
|
* If you are the client, close the connection.
|
|
|
|
|
*/
|
|
|
|
|
int http_should_keep_alive(const http_parser *parser);
|
|
|
|
|
struct http_parser_data {
|
|
|
|
|
enum { HTTP_PARSER_ERROR = 0
|
|
|
|
|
, HTTP_NEEDS_INPUT
|
|
|
|
|
, HTTP_NEEDS_DATA_ELEMENTS
|
|
|
|
|
, HTTP_REQ_MESSAGE_START /* payload.method */
|
|
|
|
|
, HTTP_RES_MESSAGE_START /* payload.status */
|
|
|
|
|
, HTTP_VERSION /* payload.version */
|
|
|
|
|
, HTTP_PATH /* payload.string */
|
|
|
|
|
, HTTP_QUERY_STRING /* payload.string */
|
|
|
|
|
, HTTP_URL /* payload.string */
|
|
|
|
|
, HTTP_FRAGMENT /* payload.string */
|
|
|
|
|
, HTTP_HEADER_FIELD /* payload.string */
|
|
|
|
|
, HTTP_HEADER_VALUE /* payload.string */
|
|
|
|
|
, HTTP_HEADERS_END /* payload.flags */
|
|
|
|
|
, HTTP_BODY /* payload.string */
|
|
|
|
|
, HTTP_MESSAGE_END /* payload.string */
|
|
|
|
|
} type;
|
|
|
|
|
|
|
|
|
|
/* Returns a string version of the HTTP method. */
|
|
|
|
|
const char *http_method_str(enum http_method m);
|
|
|
|
|
union {
|
|
|
|
|
struct {
|
|
|
|
|
const char *p;
|
|
|
|
|
size_t len;
|
|
|
|
|
} string;
|
|
|
|
|
|
|
|
|
|
/* Returns a string version of the HTTP status code. */
|
|
|
|
|
const char *http_status_str(enum http_status s);
|
|
|
|
|
/* For HTTP_RES_MESSAGE_START */
|
|
|
|
|
unsigned short status_code;
|
|
|
|
|
|
|
|
|
|
/* Return a string name of the given error */
|
|
|
|
|
const char *http_errno_name(enum http_errno err);
|
|
|
|
|
/* For HTTP_REQ_MESSAGE_START */
|
|
|
|
|
unsigned char method;
|
|
|
|
|
|
|
|
|
|
/* Return a string description of the given error */
|
|
|
|
|
const char *http_errno_description(enum http_errno err);
|
|
|
|
|
/* For HTTP_VERSION */
|
|
|
|
|
struct {
|
|
|
|
|
unsigned short major;
|
|
|
|
|
unsigned short minor;
|
|
|
|
|
} version;
|
|
|
|
|
|
|
|
|
|
/* Initialize all http_parser_url members to 0 */
|
|
|
|
|
void http_parser_url_init(struct http_parser_url *u);
|
|
|
|
|
/* For HTTP_HEADERS_END */
|
|
|
|
|
unsigned char flags : 6;
|
|
|
|
|
|
|
|
|
|
/* Parse a URL; return nonzero on failure */
|
|
|
|
|
int http_parser_parse_url(const char *buf, size_t buflen,
|
|
|
|
|
int is_connect,
|
|
|
|
|
struct http_parser_url *u);
|
|
|
|
|
} payload;
|
|
|
|
|
|
|
|
|
|
/* Pause or un-pause the parser; a nonzero value pauses */
|
|
|
|
|
void http_parser_pause(http_parser *parser, int paused);
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Checks if this is the final chunk of the body. */
|
|
|
|
|
int http_body_is_final(const http_parser *parser);
|
|
|
|
|
/* Returns the number of elements filled into `data`.
|
|
|
|
|
*
|
|
|
|
|
* Normally `http_parser_execute2` will parse the entire `buf` and fill
|
|
|
|
|
* `data` with elements. Under several conditions `http_parser_execute2` may
|
|
|
|
|
* drop out early.
|
|
|
|
|
*
|
|
|
|
|
* 1. A parse error was encountered. The last element of data will be
|
|
|
|
|
* HTTP_PARSER_ERROR. The parser cannot continue further. The
|
|
|
|
|
* connection to the peer should be severed.
|
|
|
|
|
*
|
|
|
|
|
* 2. The parser still to parser more of `buf` but it has run out of
|
|
|
|
|
* space in the user-supplied `http_parser_data` array. The last
|
|
|
|
|
* element of `data` will be HTTP_NEEDS_DATA_ELEMENTS. Restart
|
|
|
|
|
* http_parser_execute2() with a fresh array of elements starting at
|
|
|
|
|
* payload.string.p in the HTTP_NEEDS_DATA_ELEMENTS object.
|
|
|
|
|
*
|
|
|
|
|
* 3. The parser cannot continue until http_parser_has_body(parser, 1)
|
|
|
|
|
* or http_parser_has_body(parser, 0) is called. This is required for
|
|
|
|
|
* all HTTP responses. For the parser it is unclear from the headers if
|
|
|
|
|
* a response message has a body or not. For example, if the message is
|
|
|
|
|
* a response to a HEAD request, then it MUST NOT have a body but
|
|
|
|
|
* nevertheless may contain "Content-Length" or
|
|
|
|
|
* "Tranfer-Encoding: chunked" headers (which normally indicate the
|
|
|
|
|
* presence of a body to the parser).
|
|
|
|
|
*
|
|
|
|
|
* The last element of `data` will be HTTP_NEEDS_INPUT. The user must
|
|
|
|
|
* call http_parser_has_body() and then restart http_parser_execute2
|
|
|
|
|
* with a fresh array of `data` elements and starting at
|
|
|
|
|
* payload.string.p that HTTP_NEEDS_INPUT pointed to.
|
|
|
|
|
*/
|
|
|
|
|
int http_parser_execute2(http_parser* parser,
|
|
|
|
|
const char* buf,
|
|
|
|
|
size_t buf_len,
|
|
|
|
|
http_parser_data data[],
|
|
|
|
|
int data_len);
|
|
|
|
|
|
|
|
|
|
/* Change the maximum header size provided at compile time. */
|
|
|
|
|
void http_parser_set_max_header_size(uint32_t size);
|
|
|
|
|
void http_parser_has_body(http_parser* parser, int);
|
|
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
|
}
|
|
|
|
|
|
Ryan Dahl