1 /* html.c: helper functions for html output
3 * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
12 /* Percent-encoding of each character, except: a-zA-Z0-9!$()*,./:;@- */
13 static const char* url_escape_table
[256] = {
14 "%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07",
15 "%08", "%09", "%0a", "%0b", "%0c", "%0d", "%0e", "%0f",
16 "%10", "%11", "%12", "%13", "%14", "%15", "%16", "%17",
17 "%18", "%19", "%1a", "%1b", "%1c", "%1d", "%1e", "%1f",
18 "%20", NULL
, "%22", "%23", NULL
, "%25", "%26", "%27",
19 NULL
, NULL
, NULL
, "%2b", NULL
, NULL
, NULL
, NULL
,
20 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
21 NULL
, NULL
, NULL
, NULL
, "%3c", "%3d", "%3e", "%3f",
22 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
23 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
24 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
25 NULL
, NULL
, NULL
, NULL
, "%5c", NULL
, "%5e", NULL
,
26 "%60", NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
27 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
28 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
29 NULL
, NULL
, NULL
, "%7b", "%7c", "%7d", NULL
, "%7f",
30 "%80", "%81", "%82", "%83", "%84", "%85", "%86", "%87",
31 "%88", "%89", "%8a", "%8b", "%8c", "%8d", "%8e", "%8f",
32 "%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97",
33 "%98", "%99", "%9a", "%9b", "%9c", "%9d", "%9e", "%9f",
34 "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%a7",
35 "%a8", "%a9", "%aa", "%ab", "%ac", "%ad", "%ae", "%af",
36 "%b0", "%b1", "%b2", "%b3", "%b4", "%b5", "%b6", "%b7",
37 "%b8", "%b9", "%ba", "%bb", "%bc", "%bd", "%be", "%bf",
38 "%c0", "%c1", "%c2", "%c3", "%c4", "%c5", "%c6", "%c7",
39 "%c8", "%c9", "%ca", "%cb", "%cc", "%cd", "%ce", "%cf",
40 "%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7",
41 "%d8", "%d9", "%da", "%db", "%dc", "%dd", "%de", "%df",
42 "%e0", "%e1", "%e2", "%e3", "%e4", "%e5", "%e6", "%e7",
43 "%e8", "%e9", "%ea", "%eb", "%ec", "%ed", "%ee", "%ef",
44 "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7",
45 "%f8", "%f9", "%fa", "%fb", "%fc", "%fd", "%fe", "%ff"
48 char *fmt(const char *format
, ...)
50 static char buf
[8][1024];
58 va_start(args
, format
);
59 len
= vsnprintf(buf
[bufidx
], sizeof(buf
[bufidx
]), format
, args
);
61 if (len
> sizeof(buf
[bufidx
])) {
62 fprintf(stderr
, "[html.c] string truncated: %s\n", format
);
68 char *fmtalloc(const char *format
, ...)
70 struct strbuf sb
= STRBUF_INIT
;
73 va_start(args
, format
);
74 strbuf_vaddf(&sb
, format
, args
);
77 return strbuf_detach(&sb
, NULL
);
80 void html_raw(const char *data
, size_t size
)
82 if (write(STDOUT_FILENO
, data
, size
) != size
)
83 die_errno("write error on html output");
86 void html(const char *txt
)
88 html_raw(txt
, strlen(txt
));
91 void htmlf(const char *format
, ...)
94 struct strbuf buf
= STRBUF_INIT
;
96 va_start(args
, format
);
97 strbuf_vaddf(&buf
, format
, args
);
100 strbuf_release(&buf
);
103 void html_txtf(const char *format
, ...)
107 va_start(args
, format
);
108 html_vtxtf(format
, args
);
112 void html_vtxtf(const char *format
, va_list ap
)
115 struct strbuf buf
= STRBUF_INIT
;
118 strbuf_vaddf(&buf
, format
, cp
);
121 strbuf_release(&buf
);
124 void html_txt(const char *txt
)
129 if (c
== '<' || c
== '>' || c
== '&') {
130 html_raw(txt
, t
- txt
);
145 void html_ntxt(int len
, const char *txt
)
148 while (t
&& *t
&& len
--) {
150 if (c
== '<' || c
== '>' || c
== '&') {
151 html_raw(txt
, t
- txt
);
163 html_raw(txt
, t
- txt
);
168 void html_attrf(const char *fmt
, ...)
171 struct strbuf sb
= STRBUF_INIT
;
174 strbuf_vaddf(&sb
, fmt
, ap
);
181 void html_attr(const char *txt
)
186 if (c
== '<' || c
== '>' || c
== '\'' || c
== '\"' || c
== '&') {
187 html_raw(txt
, t
- txt
);
206 void html_url_path(const char *txt
)
210 unsigned char c
= *t
;
211 const char *e
= url_escape_table
[c
];
212 if (e
&& c
!= '+' && c
!= '&') {
213 html_raw(txt
, t
- txt
);
223 void html_url_arg(const char *txt
)
227 unsigned char c
= *t
;
228 const char *e
= url_escape_table
[c
];
232 html_raw(txt
, t
- txt
);
242 void html_header_arg_in_quotes(const char *txt
)
246 unsigned char c
= *t
;
247 const char *e
= NULL
;
257 html_raw(txt
, t
- txt
);
268 void html_hidden(const char *name
, const char *value
)
270 html("<input type='hidden' name='");
277 void html_option(const char *value
, const char *text
, const char *selected_value
)
279 html("<option value='");
282 if (selected_value
&& !strcmp(selected_value
, value
))
283 html(" selected='selected'");
289 void html_intoption(int value
, const char *text
, int selected_value
)
291 htmlf("<option value='%d'%s>", value
,
292 value
== selected_value
? " selected='selected'" : "");
297 void html_link_open(const char *url
, const char *title
, const char *class)
312 void html_link_close(void)
317 void html_fileperm(unsigned short mode
)
319 htmlf("%c%c%c", (mode
& 4 ? 'r' : '-'),
320 (mode
& 2 ? 'w' : '-'), (mode
& 1 ? 'x' : '-'));
323 int html_include(const char *filename
)
329 if (!(f
= fopen(filename
, "r"))) {
330 fprintf(stderr
, "[cgit] Failed to include file %s: %s (%d).\n",
331 filename
, strerror(errno
), errno
);
334 while ((len
= fread(buf
, 1, 4096, f
)) > 0)
340 static int hextoint(char c
)
342 if (c
>= 'a' && c
<= 'f')
344 else if (c
>= 'A' && c
<= 'F')
346 else if (c
>= '0' && c
<= '9')
352 static char *convert_query_hexchar(char *txt
)
360 d1
= hextoint(*(txt
+ 1));
361 d2
= hextoint(*(txt
+ 2));
362 if (d1
< 0 || d2
< 0) {
363 memmove(txt
, txt
+ 3, n
- 2);
367 memmove(txt
+ 1, txt
+ 3, n
- 2);
372 int http_parse_querystring(const char *txt_
, void (*fn
)(const char *name
, const char *value
))
374 char *o
, *t
, *txt
, *value
= NULL
, c
;
379 o
= t
= txt
= xstrdup(txt_
);
380 while ((c
=*t
) != '\0') {
384 } else if (c
== '+') {
386 } else if (c
== '%') {
387 t
= convert_query_hexchar(t
);
388 } else if (c
== '&') {