/* 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 __cplusplusextern "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>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;#elif (defined(__sun) || defined(__sun__)) && defined(__SunOS_5_9)#include <sys/inttypes.h>#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)#endiftypedef 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.** 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};/* 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};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};/* 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 uses_transfer_encoding : 1; /* Transfer-Encoding header is present */unsigned int allow_chunked_length : 1; /* Allow headers with both* `Content-Length` and* `Transfer-Encoding: chunked` set */unsigned int lenient_http_headers : 1;uint32_t nread; /* # bytes read in various scenarios */uint64_t content_length; /* # bytes in body. `(uint64_t) -1` (all bits one)* 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;/* 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;};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);/* 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);/* 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);/* Returns a string version of the HTTP status code. */const char *http_status_str(enum http_status s);/* 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);/* Initialize all http_parser_url members to 0 */void http_parser_url_init(struct http_parser_url *u);/* 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);/* Change the maximum header size provided at compile time. */void http_parser_set_max_header_size(uint32_t size);#ifdef __cplusplus}#endif#endif
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