You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
328 lines
12 KiB
328 lines
12 KiB
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to
|
|
* deal in the Software without restriction, including without limitation the
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
* sell copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
#ifndef http_parser_h
|
|
#define http_parser_h
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Also update SONAME in the Makefile whenever you change these. */
|
|
#define HTTP_PARSER_VERSION_MAJOR 2
|
|
#define HTTP_PARSER_VERSION_MINOR 3
|
|
#define HTTP_PARSER_VERSION_PATCH 0
|
|
|
|
#include <sys/types.h>
|
|
#if defined(_WIN32) && !defined(__MINGW32__) && (!defined(_MSC_VER) || _MSC_VER<1600)
|
|
#include <BaseTsd.h>
|
|
#include <stddef.h>
|
|
typedef __int8 int8_t;
|
|
typedef unsigned __int8 uint8_t;
|
|
typedef __int16 int16_t;
|
|
typedef unsigned __int16 uint16_t;
|
|
typedef __int32 int32_t;
|
|
typedef unsigned __int32 uint32_t;
|
|
typedef __int64 int64_t;
|
|
typedef unsigned __int64 uint64_t;
|
|
#else
|
|
#include <stdint.h>
|
|
#endif
|
|
|
|
/* Compile with -DHTTP_PARSER_STRICT=0 to make less checks, but run
|
|
* faster
|
|
*/
|
|
#ifndef HTTP_PARSER_STRICT
|
|
# define HTTP_PARSER_STRICT 1
|
|
#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;
|
|
|
|
|
|
/* 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_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*);
|
|
|
|
|
|
/* 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) \
|
|
/* subversion */ \
|
|
XX(16, REPORT, REPORT) \
|
|
XX(17, MKACTIVITY, MKACTIVITY) \
|
|
XX(18, CHECKOUT, CHECKOUT) \
|
|
XX(19, MERGE, MERGE) \
|
|
/* upnp */ \
|
|
XX(20, MSEARCH, M-SEARCH) \
|
|
XX(21, NOTIFY, NOTIFY) \
|
|
XX(22, SUBSCRIBE, SUBSCRIBE) \
|
|
XX(23, UNSUBSCRIBE, UNSUBSCRIBE) \
|
|
/* RFC-5789 */ \
|
|
XX(24, PATCH, PATCH) \
|
|
XX(25, PURGE, PURGE) \
|
|
/* CalDAV */ \
|
|
XX(26, MKCALENDAR, MKCALENDAR) \
|
|
|
|
enum http_method
|
|
{
|
|
#define XX(num, name, string) HTTP_##name = num,
|
|
HTTP_METHOD_MAP(XX)
|
|
#undef XX
|
|
};
|
|
|
|
|
|
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_TRAILING = 1 << 3
|
|
, F_UPGRADE = 1 << 4
|
|
, F_SKIPBODY = 1 << 5
|
|
};
|
|
|
|
|
|
/* 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") \
|
|
\
|
|
/* 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(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")
|
|
|
|
|
|
/* 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 : 6; /* F_* values from 'flags' enum; semi-public */
|
|
unsigned int state : 8; /* enum state from http_parser.c */
|
|
unsigned int header_state : 8; /* enum header_state from http_parser.c */
|
|
unsigned int index : 8; /* index into current matcher */
|
|
|
|
uint32_t nread; /* # bytes read in various scenarios */
|
|
uint64_t content_length; /* # bytes in body (0 if no Content-Length header) */
|
|
|
|
/** 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;
|
|
|
|
/* 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;
|
|
|
|
/** PUBLIC **/
|
|
void *data; /* A pointer to get hook to the "connection" or "socket" object */
|
|
};
|
|
|
|
|
|
struct http_parser_settings {
|
|
http_cb on_message_begin;
|
|
http_data_cb on_url;
|
|
http_data_cb on_status;
|
|
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;
|
|
};
|
|
|
|
|
|
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, version);
|
|
*/
|
|
unsigned long http_parser_version(void);
|
|
|
|
void http_parser_init(http_parser *parser, enum http_parser_type type);
|
|
|
|
|
|
size_t http_parser_execute(http_parser *parser,
|
|
const http_parser_settings *settings,
|
|
const char *data,
|
|
size_t len);
|
|
|
|
|
|
/* 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);
|
|
|
|
/* Returns a string version of the HTTP method. */
|
|
const char *http_method_str(enum http_method m);
|
|
|
|
/* Return a string name of the given error */
|
|
const char *http_errno_name(enum http_errno err);
|
|
|
|
/* Return a string description of the given error */
|
|
const char *http_errno_description(enum http_errno err);
|
|
|
|
/* 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);
|
|
|
|
/* 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);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|