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/* $Id: http.h,v 1.7 2018/11/06 20:40:49 jsing Exp $ */
/*
* Copyright (c) 2016 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
* ANY SPECIAL, DIRECT, 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_H
#define HTTP_H
struct source {
int family; /* 4 (PF_INET) or 6 (PF_INET6) */
char *ip; /* IPV4 or IPV6 address */
};
struct http;
/*
* Write and read callbacks to allow HTTP and HTTPS.
* Both of these return the number of bytes read (or written) or -1 on
* failure.
* 0 bytes read means that the connection has closed.
*/
typedef ssize_t (*writefp)(const void *, size_t, const struct http *);
typedef ssize_t (*readfp)(char *, size_t, const struct http *);
/*
* HTTP/S header pair.
* There's also a cooked-up pair, "Status", with the status code.
* Both strings are NUL-terminated.
*/
struct httphead {
const char *key;
const char *val;
};
/*
* Grab all information from a transfer.
* DO NOT free any parts of this, and editing the parts (e.g., changing
* the underlying strings) will persist; so in short, don't.
* All of these values will be set upon http_get() success.
*/
struct httpget {
struct httpxfer *xfer; /* underlying transfer */
struct http *http; /* underlying connection */
int code; /* return code */
struct httphead *head; /* headers */
size_t headsz; /* number of headers */
char *headpart; /* header buffer */
size_t headpartsz; /* size of headpart */
char *bodypart; /* body buffer */
size_t bodypartsz; /* size of bodypart */
};
int http_init(void);
/* Convenience functions. */
struct httpget *http_get(const struct source *, size_t,
const char *, short, const char *,
const void *, size_t);
void http_get_free(struct httpget *);
/* Allocation and release. */
struct http *http_alloc(const struct source *, size_t,
const char *, short, const char *);
void http_free(struct http *);
struct httpxfer *http_open(const struct http *, const void *, size_t);
void http_close(struct httpxfer *);
void http_disconnect(struct http *);
/* Access. */
char *http_head_read(const struct http *,
struct httpxfer *, size_t *);
struct httphead *http_head_parse(const struct http *,
struct httpxfer *, size_t *);
char *http_body_read(const struct http *,
struct httpxfer *, size_t *);
int http_head_status(const struct http *,
struct httphead *, size_t);
struct httphead *http_head_get(const char *,
struct httphead *, size_t);
#endif /* HTTP_H */
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