295 lines
8.9 KiB
C
295 lines
8.9 KiB
C
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef ZEPHYR_INCLUDE_NET_HTTP_PARSER_H_
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#define ZEPHYR_INCLUDE_NET_HTTP_PARSER_H_
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/* Also update SONAME in the Makefile whenever you change these. */
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#define HTTP_PARSER_VERSION_MAJOR 2
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#define HTTP_PARSER_VERSION_MINOR 7
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#define HTTP_PARSER_VERSION_PATCH 1
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#include <sys/types.h>
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#if defined(_WIN32) && !defined(__MINGW32__) && \
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(!defined(_MSC_VER) || _MSC_VER < 1600) && !defined(__WINE__)
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#include <BaseTsd.h>
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#include <stddef.h>
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typedef __int8 int8_t;
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typedef unsigned __int8 uint8_t;
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typedef __int16 int16_t;
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typedef unsigned __int16 uint16_t;
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typedef __int32 int32_t;
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typedef unsigned __int32 uint32_t;
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typedef __int64 int64_t;
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typedef unsigned __int64 uint64_t;
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#else
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#include <zephyr/types.h>
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#include <stddef.h>
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#endif
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#include <net/http_parser_state.h>
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#include <net/http_parser_url.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Maximium header size allowed. If the macro is not defined
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* before including this header then the default is used. To
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* change the maximum header size, define the macro in the build
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* environment (e.g. -DHTTP_MAX_HEADER_SIZE=<value>). To remove
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* the effective limit on the size of the header, define the macro
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* to a very large number (e.g. -DHTTP_MAX_HEADER_SIZE=0x7fffffff)
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*/
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#ifndef HTTP_MAX_HEADER_SIZE
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# define HTTP_MAX_HEADER_SIZE (80 * 1024)
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#endif
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struct http_parser;
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struct http_parser_settings;
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/* Callbacks should return non-zero to indicate an error. The parser will
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* then halt execution.
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*
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* The one exception is on_headers_complete. In a HTTP_RESPONSE parser
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* returning '1' from on_headers_complete will tell the parser that it
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* should not expect a body. This is used when receiving a response to a
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* HEAD request which may contain 'Content-Length' or 'Transfer-Encoding:
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* chunked' headers that indicate the presence of a body.
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*
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* Returning `2` from on_headers_complete will tell parser that it should not
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* expect neither a body nor any further responses on this connection. This is
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* useful for handling responses to a CONNECT request which may not contain
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* `Upgrade` or `Connection: upgrade` headers.
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*
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* http_data_cb does not return data chunks. It will be called arbitrarily
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* many times for each string. E.G. you might get 10 callbacks for "on_url"
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* each providing just a few characters more data.
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*/
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typedef int (*http_data_cb)(struct http_parser *, const char *at,
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size_t length);
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typedef int (*http_cb)(struct http_parser *);
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enum http_method {
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HTTP_DELETE = 0,
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HTTP_GET = 1,
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HTTP_HEAD = 2,
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HTTP_POST = 3,
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HTTP_PUT = 4,
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HTTP_CONNECT = 5,
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HTTP_OPTIONS = 6,
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HTTP_TRACE = 7,
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HTTP_COPY = 8,
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HTTP_LOCK = 9,
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HTTP_MKCOL = 10,
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HTTP_MOVE = 11,
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HTTP_PROPFIND = 12,
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HTTP_PROPPATCH = 13,
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HTTP_SEARCH = 14,
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HTTP_UNLOCK = 15,
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HTTP_BIND = 16,
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HTTP_REBIND = 17,
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HTTP_UNBIND = 18,
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HTTP_ACL = 19,
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HTTP_REPORT = 20,
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HTTP_MKACTIVITY = 21,
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HTTP_CHECKOUT = 22,
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HTTP_MERGE = 23,
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HTTP_MSEARCH = 24,
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HTTP_NOTIFY = 25,
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HTTP_SUBSCRIBE = 26,
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HTTP_UNSUBSCRIBE = 27,
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HTTP_PATCH = 28,
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HTTP_PURGE = 29,
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HTTP_MKCALENDAR = 30,
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HTTP_LINK = 31,
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HTTP_UNLINK = 32
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};
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enum http_parser_type { HTTP_REQUEST, HTTP_RESPONSE, HTTP_BOTH };
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/* Flag values for http_parser.flags field */
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enum flags {
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F_CHUNKED = 1 << 0,
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F_CONNECTION_KEEP_ALIVE = 1 << 1,
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F_CONNECTION_CLOSE = 1 << 2,
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F_CONNECTION_UPGRADE = 1 << 3,
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F_TRAILING = 1 << 4,
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F_UPGRADE = 1 << 5,
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F_SKIPBODY = 1 << 6,
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F_CONTENTLENGTH = 1 << 7
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};
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enum http_errno {
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HPE_OK,
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HPE_CB_message_begin,
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HPE_CB_url,
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HPE_CB_header_field,
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HPE_CB_header_value,
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HPE_CB_headers_complete,
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HPE_CB_body,
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HPE_CB_message_complete,
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HPE_CB_status,
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HPE_CB_chunk_header,
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HPE_CB_chunk_complete,
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HPE_INVALID_EOF_STATE,
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HPE_HEADER_OVERFLOW,
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HPE_CLOSED_CONNECTION,
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HPE_INVALID_VERSION,
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HPE_INVALID_STATUS,
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HPE_INVALID_METHOD,
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HPE_INVALID_URL,
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HPE_INVALID_HOST,
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HPE_INVALID_PORT,
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HPE_INVALID_PATH,
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HPE_INVALID_QUERY_STRING,
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HPE_INVALID_FRAGMENT,
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HPE_LF_EXPECTED,
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HPE_INVALID_HEADER_TOKEN,
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HPE_INVALID_CONTENT_LENGTH,
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HPE_UNEXPECTED_CONTENT_LENGTH,
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HPE_INVALID_CHUNK_SIZE,
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HPE_INVALID_CONSTANT,
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HPE_INVALID_INTERNAL_STATE,
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HPE_STRICT,
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HPE_PAUSED,
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HPE_UNKNOWN
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};
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/* Get an http_errno value from an http_parser */
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#define HTTP_PARSER_ERRNO(p) ((enum http_errno) (p)->http_errno)
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struct http_parser {
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/** PRIVATE **/
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unsigned int type : 2; /* enum http_parser_type */
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unsigned int flags : 8; /* F_xxx values from 'flags' enum;
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* semi-public
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*/
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unsigned int state : 7; /* enum state from http_parser.c */
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unsigned int header_state : 7; /* enum header_state from http_parser.c
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*/
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unsigned int index : 7; /* index into current matcher */
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unsigned int lenient_http_headers : 1;
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uint32_t nread; /* # bytes read in various scenarios */
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uint64_t content_length; /* # bytes in body (0 if no Content-Length
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* header)
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*/
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/** READ-ONLY **/
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unsigned short http_major;
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unsigned short http_minor;
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unsigned int status_code : 16; /* responses only */
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unsigned int method : 8; /* requests only */
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unsigned int http_errno : 7;
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/* 1 = Upgrade header was present and the parser has exited because of
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* that.
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* 0 = No upgrade header present.
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* Should be checked when http_parser_execute() returns in addition to
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* error checking.
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*/
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unsigned int upgrade : 1;
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/** PUBLIC **/
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void *data; /* A pointer to get hook to the "connection" or "socket"
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* object
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*/
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/* Remote socket address of http connection, where parser can initiate
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* replies if necessary.
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*/
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const struct sockaddr *addr;
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};
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struct http_parser_settings {
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http_cb on_message_begin;
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http_data_cb on_url;
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http_data_cb on_status;
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http_data_cb on_header_field;
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http_data_cb on_header_value;
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http_cb on_headers_complete;
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http_data_cb on_body;
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http_cb on_message_complete;
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/* When on_chunk_header is called, the current chunk length is stored
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* in parser->content_length.
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*/
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http_cb on_chunk_header;
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http_cb on_chunk_complete;
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};
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/* Returns the library version. Bits 16-23 contain the major version number,
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* bits 8-15 the minor version number and bits 0-7 the patch level.
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* Usage example:
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*
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* unsigned long version = http_parser_version();
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* unsigned major = (version >> 16) & 255;
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* unsigned minor = (version >> 8) & 255;
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* unsigned patch = version & 255;
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* printf("http_parser v%u.%u.%u\n", major, minor, patch);
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*/
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unsigned long http_parser_version(void);
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void http_parser_init(struct http_parser *parser, enum http_parser_type type);
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/* Initialize http_parser_settings members to 0
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*/
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void http_parser_settings_init(struct http_parser_settings *settings);
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/* Executes the parser. Returns number of parsed bytes. Sets
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* `parser->http_errno` on error.
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*/
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size_t http_parser_execute(struct http_parser *parser,
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const struct http_parser_settings *settings,
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const char *data, size_t len);
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/* If http_should_keep_alive() in the on_headers_complete or
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* on_message_complete callback returns 0, then this should be
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* the last message on the connection.
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* If you are the server, respond with the "Connection: close" header.
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* If you are the client, close the connection.
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*/
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int http_should_keep_alive(const struct http_parser *parser);
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/* Returns a string version of the HTTP method. */
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const char *http_method_str(enum http_method m);
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/* Return a string name of the given error */
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const char *http_errno_name(enum http_errno err);
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/* Return a string description of the given error */
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const char *http_errno_description(enum http_errno err);
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/* Pause or un-pause the parser; a nonzero value pauses */
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void http_parser_pause(struct http_parser *parser, int paused);
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/* Checks if this is the final chunk of the body. */
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int http_body_is_final(const struct http_parser *parser);
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#ifdef __cplusplus
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}
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#endif
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#endif
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