2
* Copyright (c) 2004-2008 Sergey Lyubka <valenok@gmail.com>
5
* "THE BEER-WARE LICENSE" (Revision 42):
6
* Sergey Lyubka wrote this file. As long as you retain this notice you
7
* can do whatever you want with this stuff. If we meet some day, and you think
8
* this stuff is worth it, you can buy me a beer in return.
10
* $Id: shttpd.h,v 1.16 2008/05/31 09:02:02 drozd Exp $
13
#ifndef SHTTPD_HEADER_INCLUDED
14
#define SHTTPD_HEADER_INCLUDED
18
#endif /* __cplusplus */
21
char *buf; /* Buffer pointer */
22
int len; /* Size of a buffer */
23
int num_bytes; /* Bytes processed by callback */
27
* This structure is passed to the user callback function
30
void *priv; /* Private! Do not touch! */
31
void *state; /* User state */
32
void *user_data; /* Data from register_uri() */
33
struct ubuf in; /* Input is here, POST data */
34
struct ubuf out; /* Output goes here */
37
#define SHTTPD_END_OF_OUTPUT 1 /* No more data do send */
38
#define SHTTPD_CONNECTION_ERROR 2 /* Server closed the connection */
39
#define SHTTPD_MORE_POST_DATA 4 /* arg->in has incomplete data */
40
#define SHTTPD_POST_BUFFER_FULL 8 /* arg->in has max data */
41
#define SHTTPD_SSI_EVAL_TRUE 16 /* SSI eval callback must set it*/
42
#define SHTTPD_SUSPEND 32 /* User wants to suspend output */
46
* User callback function. Called when certain registered URLs have been
47
* requested. These are the requirements to the callback function:
49
* 1. It must copy data into 'out.buf' buffer, not more than 'out.len' bytes,
50
* and record how many bytes are copied, into 'out.num_bytes'
51
* 2. It must not call any blocking functions
52
* 3. It must set SHTTPD_END_OF_OUTPUT flag when there is no more data to send
53
* 4. For POST requests, it must process the incoming data (in.buf) of length
54
* 'in.len', and set 'in.num_bytes', which is how many bytes of POST
55
* data was processed and can be discarded by SHTTPD.
56
* 5. If callback allocates arg->state, to keep state, it must deallocate it
57
* at the end of coonection SHTTPD_CONNECTION_ERROR or SHTTPD_END_OF_OUTPUT
58
* 6. If callback function wants to suspend until some event, it must store
59
* arg->priv pointer elsewhere, set SHTTPD_SUSPEND flag and return. When
60
* the event happens, user code should call shttpd_wakeup(priv).
61
* It is safe to call shttpd_wakeup() from any thread. User code must
62
* not call shttpd_wakeup once the connection is closed.
64
typedef void (*shttpd_callback_t)(struct shttpd_arg *);
67
* shttpd_init Initialize shttpd context
68
* shttpd_fini Dealocate the context, close all connections
69
* shttpd_set_option Set new value for option
70
* shttpd_register_uri Setup the callback function for specified URL
71
* shttpd_poll Do connections processing
72
* shttpd_version return string with SHTTPD version
73
* shttpd_get_var Fetch POST/GET variable value by name. Return value len
74
* shttpd_get_header return value of the specified HTTP header
75
* shttpd_get_env return values for the following pseudo-variables:
76
"REQUEST_METHOD", "REQUEST_URI",
77
* "REMOTE_USER" and "REMOTE_ADDR"
78
* shttpd_printf helper function to output data
79
* shttpd_handle_error register custom HTTP error handler
80
* shttpd_wakeup clear SHTTPD_SUSPEND state for the connection
85
struct shttpd_ctx *shttpd_init(int argc, char *argv[]);
86
void shttpd_set_option(struct shttpd_ctx *, const char *opt, const char *val);
87
void shttpd_fini(struct shttpd_ctx *);
88
void shttpd_register_uri(struct shttpd_ctx *ctx, const char *uri,
89
shttpd_callback_t callback, void *const user_data);
90
void shttpd_poll(struct shttpd_ctx *, int milliseconds);
91
const char *shttpd_version(void);
92
int shttpd_get_var(const char *var, const char *buf, int buf_len,
93
char *value, int value_len);
94
const char *shttpd_get_header(struct shttpd_arg *, const char *header_name);
95
const char *shttpd_get_env(struct shttpd_arg *, const char *name);
96
void shttpd_get_http_version(struct shttpd_arg *,
97
unsigned long *major, unsigned long *minor);
98
size_t shttpd_printf(struct shttpd_arg *, const char *fmt, ...);
99
void shttpd_handle_error(struct shttpd_ctx *ctx, int status,
100
shttpd_callback_t func, void *const data);
101
void shttpd_register_ssi_func(struct shttpd_ctx *ctx, const char *name,
102
shttpd_callback_t func, void *const user_data);
103
void shttpd_wakeup(const void *priv);
107
#endif /* __cplusplus */
109
#endif /* SHTTPD_HEADER_INCLUDED */