aboutsummaryrefslogtreecommitdiff
path: root/include/httpd.h
blob: 9789fba45282d7643e3c259d90f3e03f57119495 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
#ifndef _HTTPD_H_
#define _HTTPD_H_ 1
#if defined(__cplusplus)
extern "C" { 
#endif

AUTOLIB(httpd)
/*
#pragma	lib	"libhttpd.a"
#pragma	src	"/sys/src/libhttpd"
*/

typedef struct HConnect		HConnect;
typedef struct HContent		HContent;
typedef struct HContents	HContents;
typedef struct HETag		HETag;
typedef struct HFields		HFields;
typedef struct Hio		Hio;
typedef struct Htmlesc		Htmlesc;
typedef struct HttpHead		HttpHead;
typedef struct HttpReq		HttpReq;
typedef struct HRange		HRange;
typedef struct HSPairs		HSPairs;

#ifndef _HAVE_BIN
typedef struct Bin		Bin;
#define _HAVE_BIN
#endif

enum
{
	HMaxWord	= 32*1024,
	HBufSize	= 32*1024,

	/*
	 * error messages
	 */
	HInternal	= 0,
	HTempFail,
	HUnimp,
	HBadReq,
	HBadSearch,
	HNotFound,
	HUnauth,
	HSyntax,
	HNoSearch,
	HNoData,
	HExpectFail,
	HUnkVers,
	HBadCont,
	HOK
};

/*
 * table of html character escape codes
 */
struct Htmlesc
{
	char		*name;
	Rune		value;
};

struct HContent
{
	HContent	*next;
	char		*generic;
	char		*specific;
	float		q;			/* desirability of this kind of file */
	int		mxb;			/* max uchars until worthless */
};

struct HContents
{
	HContent	*type;
	HContent	 *encoding;
};

/*
 * generic http header with a list of tokens,
 * each with an optional list of parameters
 */
struct HFields
{
	char		*s;
	HSPairs		*params;
	HFields		*next;
};

/*
 * list of pairs a strings
 * used for tag=val pairs for a search or form submission,
 * and attribute=value pairs in headers.
 */
struct HSPairs
{
	char		*s;
	char		*t;
	HSPairs		*next;
};

/*
 * byte ranges within a file
 */
struct HRange
{
	int		suffix;			/* is this a suffix request? */
	ulong		start;
	ulong		stop;			/* ~0UL -> not given */
	HRange		*next;
};

/*
 * list of http/1.1 entity tags
 */
struct HETag
{
	char		*etag;
	int		weak;
	HETag		*next;
};

/*
 * HTTP custom IO
 * supports chunked transfer encoding
 * and initialization of the input buffer from a string.
 */
enum
{
	Hnone,
	Hread,
	Hend,
	Hwrite,
	Herr,

	Hsize = HBufSize
};

struct Hio {
	Hio		*hh;			/* next lower layer Hio, or nil if reads from fd */
	int		fd;			/* associated file descriptor */
	ulong		seek;			/* of start */
	uchar		state;			/* state of the file */
	uchar		xferenc;		/* chunked transfer encoding state */
	uchar		*pos;			/* current position in the buffer */
	uchar		*stop;			/* last character active in the buffer */
	uchar		*start;			/* start of data buffer */
	ulong		bodylen;		/* remaining length of message body */
	uchar		buf[Hsize+32];
};

/*
 * request line
 */
struct HttpReq
{
	char		*meth;
	char		*uri;
	char		*urihost;
	char		*search;
	int		vermaj;
	int		vermin;
	HSPairs	*searchpairs;
};

/*
 * header lines
 */
struct HttpHead
{
	int		closeit;		/* http1.1 close connection after this request? */
	uchar		persist;		/* http/1.1 requests a persistent connection */

	uchar		expectcont;		/* expect a 100-continue */
	uchar		expectother;		/* expect anything else; should reject with ExpectFail */
	ulong		contlen;		/* if != ~0UL, length of included message body */
	HFields		*transenc;		/* if present, encoding of included message body */
	char		*client;
	char		*host;
	HContent	*okencode;
	HContent	*oklang;
	HContent	*oktype;
	HContent	*okchar;
	ulong		ifmodsince;
	ulong		ifunmodsince;
	ulong		ifrangedate;
	HETag		*ifmatch;
	HETag		*ifnomatch;
	HETag		*ifrangeetag;
	HRange		*range;
	char		*authuser;		/* authorization info */
	char		*authpass;

	/*
	 * experimental headers
	 */
	int		fresh_thresh;
	int		fresh_have;
};

/*
 * all of the state for a particular connection
 */
struct HConnect
{
	void		*private;		/* for the library clients */
	void		(*replog)(HConnect*, char*, ...);	/* called when reply sent */

	HttpReq		req;
	HttpHead	head;

	Bin		*bin;

	ulong		reqtime;		/* time at start of request */
	char		xferbuf[HBufSize];	/* buffer for making up or transferring data */
	uchar		header[HBufSize + 2];	/* room for \n\0 */
	uchar		*hpos;
	uchar		*hstop;
	Hio		hin;
	Hio		hout;
};

/*
 * configuration for all connections within the server
 */
extern	char*		hmydomain;
extern	char*		hversion;
extern	Htmlesc		htmlesc[];

/*
 * .+2,/^$/ | sort -bd +1
 */
void			*halloc(HConnect *c, ulong size);
Hio			*hbodypush(Hio *hh, ulong len, HFields *te);
int			hbuflen(Hio *h, void *p);
int			hcheckcontent(HContent*, HContent*, char*, int);
void			hclose(Hio*);
ulong			hdate2sec(char*);
int			hdatefmt(Fmt*);
int			hfail(HConnect*, int, ...);
int			hflush(Hio*);
int			hlflush(Hio*);
int			hgetc(Hio*);
int			hgethead(HConnect *c, int many);
int			hinit(Hio*, int, int);
int			hiserror(Hio *h);
int			hload(Hio*, char*);
char			*hlower(char*);
HContent		*hmkcontent(HConnect *c, char *generic, char *specific, HContent *next);
HFields			*hmkhfields(HConnect *c, char *s, HSPairs *p, HFields *next);
char			*hmkmimeboundary(HConnect *c);
HSPairs			*hmkspairs(HConnect *c, char *s, char *t, HSPairs *next);
int			hmoved(HConnect *c, char *uri);
void			hokheaders(HConnect *c);
int			hparseheaders(HConnect*, int timeout);
HSPairs			*hparsequery(HConnect *c, char *search);
int			hparsereq(HConnect *c, int timeout);
int			hprint(Hio*, char*, ...);
int			hputc(Hio*, int);
void			*hreadbuf(Hio *h, void *vsave);
int			hredirected(HConnect *c, char *how, char *uri);
void			hreqcleanup(HConnect *c);
HFields			*hrevhfields(HFields *hf);
HSPairs			*hrevspairs(HSPairs *sp);
char			*hstrdup(HConnect *c, char *s);
int			http11(HConnect*);
int			httpfmt(Fmt*);
char			*httpunesc(HConnect *c, char *s);
int			hunallowed(HConnect *, char *allowed);
int			hungetc(Hio *h);
char			*hunload(Hio*);
int			hurlfmt(Fmt*);
char			*hurlunesc(HConnect *c, char *s);
int			hwrite(Hio*, void*, int);
int			hxferenc(Hio*, int);

/*
#pragma			varargck	argpos	hprint	2
*/
/*
 * D is httpd format date conversion
 * U is url escape convertsion
 * H is html escape conversion
 */
/*
#pragma	varargck	type	"D"	long
#pragma	varargck	type	"D"	ulong
#pragma	varargck	type	"U"	char*
#pragma	varargck	type	"H"	char*
*/

#if defined(__cplusplus)
}
#endif
#endif