94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/* $Id: http.h,v 1.5 2017/01/25 13:52:53 inoguchi Exp $ */
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/*
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* Copyright (c) 2016 Kristaps Dzonsons <kristaps@bsd.lv>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef HTTP_H
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#define HTTP_H
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struct source {
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int family; /* 4 (PF_INET) or 6 (PF_INET6) */
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char *ip; /* IPV4 or IPV6 address */
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};
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struct http;
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/*
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* Write and read callbacks to allow HTTP and HTTPS.
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* Both of these return the number of bytes read (or written) or -1 on
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* failure.
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* 0 bytes read means that the connection has closed.
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*/
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typedef ssize_t (*writefp)(const void *, size_t, const struct http *);
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typedef ssize_t (*readfp)(char *, size_t, const struct http *);
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/*
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* HTTP/S header pair.
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* There's also a cooked-up pair, "Status", with the status code.
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* Both strings are NUL-terminated.
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*/
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struct httphead {
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const char *key;
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const char *val;
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};
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/*
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* Grab all information from a transfer.
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* DO NOT free any parts of this, and editing the parts (e.g., changing
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* the underlying strings) will persist; so in short, don't.
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* All of these values will be set upon http_get() success.
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*/
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struct httpget {
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struct httpxfer *xfer; /* underlying transfer */
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struct http *http; /* underlying connection */
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int code; /* return code */
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struct httphead *head; /* headers */
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size_t headsz; /* number of headers */
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char *headpart; /* header buffer */
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size_t headpartsz; /* size of headpart */
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char *bodypart; /* body buffer */
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size_t bodypartsz; /* size of bodypart */
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};
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int http_init(void);
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/* Convenience functions. */
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struct httpget *http_get(const struct source *, size_t,
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const char *, short, const char *,
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const void *, size_t, struct httphead **);
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void http_get_free(struct httpget *);
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/* Allocation and release. */
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struct http *http_alloc(const struct source *, size_t,
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const char *, short, const char *);
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void http_free(struct http *);
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struct httpxfer *http_open(const struct http *, const void *, size_t,
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struct httphead **);
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void http_close(struct httpxfer *);
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void http_disconnect(struct http *);
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/* Access. */
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char *http_head_read(const struct http *,
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struct httpxfer *, size_t *);
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struct httphead *http_head_parse(const struct http *,
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struct httpxfer *, size_t *);
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char *http_body_read(const struct http *,
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struct httpxfer *, size_t *);
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int http_head_status(const struct http *,
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struct httphead *, size_t);
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struct httphead *http_head_get(const char *,
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struct httphead *, size_t);
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#endif /* HTTP_H */
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