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icecast-common/httpp/httpp.h

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/* httpp.h
**
** http parsing library
**
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** Copyright (C) 2014 Michael Smith <msmith@icecast.org>,
** Ralph Giles <giles@xiph.org>,
** Karl Heyes <karl@xiph.org>,
** Copyright (C) 2012-2018 Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Library General Public
** License as published by the Free Software Foundation; either
** version 2 of the License, or (at your option) any later version.
**
** This library is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** Library General Public License for more details.
**
** You should have received a copy of the GNU Library General Public
** License along with this library; if not, write to the
** Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
** Boston, MA 02110-1301, USA.
**
*/
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#ifndef _LIBIGLOO__HTTPP_H_
#define _LIBIGLOO__HTTPP_H_
#include <avl/avl.h>
#define igloo_HTTPP_VAR_PROTOCOL "__protocol"
#define igloo_HTTPP_VAR_VERSION "__version"
#define igloo_HTTPP_VAR_URI "__uri"
#define igloo_HTTPP_VAR_RAWURI "__rawuri"
#define igloo_HTTPP_VAR_QUERYARGS "__queryargs"
#define igloo_HTTPP_VAR_REQ_TYPE "__req_type"
#define igloo_HTTPP_VAR_ERROR_MESSAGE "__errormessage"
#define igloo_HTTPP_VAR_ERROR_CODE "__errorcode"
#define igloo_HTTPP_VAR_ICYPASSWORD "__icy_password"
typedef enum {
HTTPP_NS_VAR,
HTTPP_NS_HEADER,
HTTPP_NS_QUERY_STRING,
HTTPP_NS_POST_BODY
} igloo_httpp_ns_t;
typedef enum httpp_request_type_tag {
/* Initial and internally used state of the engine */
httpp_req_none = 0,
/* Part of HTTP standard: GET, POST, PUT and HEAD */
httpp_req_get,
httpp_req_post,
httpp_req_put,
httpp_req_head,
httpp_req_options,
httpp_req_delete,
httpp_req_trace,
httpp_req_connect,
/* Icecast SOURCE, to be replaced with PUT some day */
httpp_req_source,
/* XXX: ??? */
httpp_req_play,
/* Icecast 2.x STATS, to request a live stream of stats events */
httpp_req_stats,
/* Used if request method is unknown. MUST BE LAST ONE IN LIST. */
httpp_req_unknown
} igloo_httpp_request_type_e;
typedef unsigned int igloo_httpp_request_info_t;
#define igloo_HTTPP_REQUEST_IS_SAFE ((igloo_httpp_request_info_t)0x0001U)
#define igloo_HTTPP_REQUEST_IS_IDEMPOTENT ((igloo_httpp_request_info_t)0x0002U)
#define igloo_HTTPP_REQUEST_IS_CACHEABLE ((igloo_httpp_request_info_t)0x0004U)
#define igloo_HTTPP_REQUEST_HAS_RESPONSE_BODY ((igloo_httpp_request_info_t)0x0010U)
#define igloo_HTTPP_REQUEST_HAS_REQUEST_BODY ((igloo_httpp_request_info_t)0x0100U)
#define igloo_HTTPP_REQUEST_HAS_OPTIONAL_REQUEST_BODY ((igloo_httpp_request_info_t)0x0200U)
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typedef struct igloo_http_var_tag igloo_http_var_t;
struct igloo_http_var_tag {
char *name;
size_t values;
char **value;
};
typedef struct igloo_http_varlist_tag {
igloo_http_var_t var;
struct igloo_http_varlist_tag *next;
} igloo_http_varlist_t;
typedef struct igloo_http_parser_tag {
size_t refc;
igloo_httpp_request_type_e req_type;
char *uri;
igloo_avl_tree *vars;
igloo_avl_tree *queryvars;
igloo_avl_tree *postvars;
} igloo_http_parser_t;
igloo_httpp_request_info_t igloo_httpp_request_info(igloo_httpp_request_type_e req);
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igloo_http_parser_t *igloo_httpp_create_parser(void);
void igloo_httpp_initialize(igloo_http_parser_t *parser, igloo_http_varlist_t *defaults);
int igloo_httpp_parse(igloo_http_parser_t *parser, const char *http_data, unsigned long len);
int httpp_parse_icy(igloo_http_parser_t *parser, const char *http_data, unsigned long len);
int igloo_httpp_parse_response(igloo_http_parser_t *parser, const char *http_data, unsigned long len, const char *uri);
int igloo_httpp_parse_postdata(igloo_http_parser_t *parser, const char *body_data, size_t len);
void igloo_httpp_setvar(igloo_http_parser_t *parser, const char *name, const char *value);
void igloo_httpp_deletevar(igloo_http_parser_t *parser, const char *name);
const char *igloo_httpp_getvar(igloo_http_parser_t *parser, const char *name);
void igloo_httpp_set_query_param(igloo_http_parser_t *parser, const char *name, const char *value);
const char *igloo_httpp_get_query_param(igloo_http_parser_t *parser, const char *name);
void igloo_httpp_set_post_param(igloo_http_parser_t *parser, const char *name, const char *value);
const char *igloo_httpp_get_post_param(igloo_http_parser_t *parser, const char *name);
const char *igloo_httpp_get_param(igloo_http_parser_t *parser, const char *name);
const igloo_http_var_t *igloo_httpp_get_param_var(igloo_http_parser_t *parser, const char *name);
const igloo_http_var_t *igloo_httpp_get_any_var(igloo_http_parser_t *parser, igloo_httpp_ns_t ns, const char *name);
char ** igloo_httpp_get_any_key(igloo_http_parser_t *parser, igloo_httpp_ns_t ns);
void igloo_httpp_free_any_key(char **keys);
int igloo_httpp_addref(igloo_http_parser_t *parser);
int igloo_httpp_release(igloo_http_parser_t *parser);
#define httpp_destroy(x) igloo_httpp_release((x))
/* util functions */
igloo_httpp_request_type_e igloo_httpp_str_to_method(const char * method);
#endif