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/* http_client.h - HTTP client-side support functions
*
* Copyright (c) 1994-2014 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifndef _HTTP_CLIENT_H
#define _HTTP_CLIENT_H
#include "backend.h"
#include "spool.h"
/* Supported HTTP version */
#define HTTP2_VERSION "HTTP/2"
#define HTTP_VERSION "HTTP/1.1"
#define HTTP_VERSION_LEN 8
/* Context for reading request/response body */
struct body_t {
unsigned char flags; /* Disposition flags */
unsigned char framing; /* Message framing */
unsigned char te; /* Transfer-Encoding */
unsigned max; /* Max allowed len */
ulong len; /* Content-Length */
struct buf payload; /* Payload */
};
/* Message Framing flags */
enum {
FRAMING_UNKNOWN = 0,
FRAMING_HTTP2,
FRAMING_LENGTH,
FRAMING_CHUNKED,
FRAMING_CLOSE
};
/* Transfer-Encoding flags (coding of response payload) */
enum {
TE_NONE = 0,
TE_DEFLATE = (1<<0), /* Implies TE_CHUNKED as final coding */
TE_GZIP = (1<<1), /* Implies TE_CHUNKED as final coding */
TE_CHUNKED = (1<<2), /* MUST be last */
TE_UNKNOWN = 0xff
};
/* http_read_body() flags */
enum {
BODY_RESPONSE = (1<<0), /* Response body, otherwise request */
BODY_CONTINUE = (1<<1), /* Expect:100-continue request */
BODY_CLOSE = (1<<2), /* Close-delimited response body */
BODY_DECODE = (1<<3), /* Decode any Content-Encoding */
BODY_DISCARD = (1<<4), /* Discard body (don't buffer or decode) */
BODY_DONE = (1<<5) /* Body has been read */
};
/* Index into known HTTP methods - needs to stay in sync with array */
enum {
METH_ACL = 0,
METH_BIND,
METH_CONNECT,
METH_COPY,
METH_DELETE,
METH_GET,
METH_HEAD,
METH_LOCK,
METH_MKCALENDAR,
METH_MKCOL,
METH_MOVE,
METH_OPTIONS,
METH_PATCH,
METH_POST,
METH_PROPFIND,
METH_PROPPATCH,
METH_PUT,
METH_REPORT,
METH_SEARCH,
METH_TRACE,
METH_UNBIND,
METH_UNLOCK,
METH_UNKNOWN, /* MUST be last */
};
extern int is_mediatype(const char *pat, const char *type);
extern int http_parse_framing(int http2, hdrcache_t hdrs, struct body_t *body,
const char **errstr);
extern int http_read_headers(struct protstream *pin, int read_sep,
hdrcache_t *hdrs, const char **errstr);
extern int http_read_body(struct protstream *pin, hdrcache_t hdrs,
struct body_t *body, const char **errstr);
extern int http_read_response(struct backend *be, unsigned meth, unsigned *code,
hdrcache_t *hdrs, struct body_t *body,
const char **errstr);
extern long http_status_to_code(unsigned status);
extern int http_parse_auth_params(const char *params,
const char **realm, unsigned int *realm_len,
const char **sid, unsigned int *sid_len,
const char **data, unsigned int *data_len);
#endif /* _HTTP_CLIENT_H */
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