1 /*
2  * This is free and unencumbered software released into the public domain.
3  *
4  * Anyone is free to copy, modify, publish, use, compile, sell, or
5  * distribute this software, either in source code form or as a compiled
6  * binary, for any purpose, commercial or non-commercial, and by any
7  * means.
8  *
9  * In jurisdictions that recognize copyright laws, the author or authors
10  * of this software dedicate any and all copyright interest in the
11  * software to the public domain. We make this dedication for the benefit
12  * of the public at large and to the detriment of our heirs and
13  * successors. We intend this dedication to be an overt act of
14  * relinquishment in perpetuity of all present and future rights to this
15  * software under copyright law.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 enum http_method {
27 	METHOD_UNKNOWN,
28 	METHOD_GET,
29 	METHOD_POST,
30 };
31 
32 enum http_version {
33 	HTTP_1_0,
34 	HTTP_1_1,
35 };
36 
37 struct bufio;
38 
39 struct request {
40 	char	*path;
41 	int	 method;
42 	int	 version;
43 	char	*secret;
44 	char	*ctype;
45 	char	*body;
46 	size_t	 clen;
47 
48 #define R_CONNUPGR  0x01
49 #define R_UPGRADEWS 0x02
50 #define R_WSVERSION 0x04
51 	int	 flags;
52 };
53 
54 struct client;
55 typedef void (*route_fn)(struct client *);
56 
57 TAILQ_HEAD(clthead, client);
58 struct client {
59 	char		*buf;
60 	size_t		len;
61 	size_t		cap;
62 	struct bufio	bio;
63 	struct request	req;
64 	int		err;
65 	int		chunked;
66 	int		ws;		/* if talking ws:// */
67 	int		reqdone;	/* done parsing the request */
68 	int		done;		/* done handling the client */
69 	route_fn	route;
70 
71 	TAILQ_ENTRY(client) clients;
72 };
73 
74 int	http_init(struct client *, int);
75 int	http_parse(struct client *);
76 int	http_read(struct client *);
77 void	http_postdata(struct client *, char **, size_t *);
78 int	http_reply(struct client *, int, const char *, const char *);
79 int	http_flush(struct client *);
80 int	http_write(struct client *, const char *, size_t);
81 int	http_writes(struct client *, const char *);
82 int	http_fmt(struct client *, const char *, ...);
83 int	http_urlescape(struct client *, const char *);
84 int	http_htmlescape(struct client *, const char *);
85 int	http_close(struct client *);
86 void	http_free(struct client *);