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_status(int code, const char *msg, int more_headers)
126 htmlf("Status: %d %s\n", code, msg);
131 void html_txt(const char *txt)
136 if (c == '<' || c == '>' || c == '&') {
137 html_raw(txt, t - txt);
152 void html_ntxt(int len, const char *txt)
155 while (t && *t && len--) {
157 if (c == '<' || c == '>' || c == '&') {
158 html_raw(txt, t - txt);
170 html_raw(txt, t - txt);
175 void html_attrf(const char *fmt, ...)
178 struct strbuf sb = STRBUF_INIT;
181 strbuf_vaddf(&sb, fmt, ap);
188 void html_attr(const char *txt)
193 if (c == '<' || c == '>' || c == '\'' || c == '\"' || c == '&') {
194 html_raw(txt, t - txt);
213 void html_url_path(const char *txt)
217 unsigned char c = *t;
218 const char *e = url_escape_table[c];
219 if (e && c != '+' && c != '&') {
220 html_raw(txt, t - txt);
230 void html_url_arg(const char *txt)
234 unsigned char c = *t;
235 const char *e = url_escape_table[c];
239 html_raw(txt, t - txt);
249 void html_hidden(const char *name, const char *value)
251 html("<input type='hidden' name='");
258 void html_option(const char *value, const char *text, const char *selected_value)
260 html("<option value='");
263 if (selected_value && !strcmp(selected_value, value))
264 html(" selected='selected'");
270 void html_intoption(int value, const char *text, int selected_value)
272 htmlf("<option value='%d'%s>", value,
273 value == selected_value ? " selected='selected'" : "");
278 void html_link_open(const char *url, const char *title, const char *class)
293 void html_link_close(void)
298 void html_fileperm(unsigned short mode)
300 htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
301 (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
304 int html_include(const char *filename)
310 if (!(f = fopen(filename, "r"))) {
311 fprintf(stderr, "[cgit] Failed to include file %s: %s (%d).\n",
312 filename, strerror(errno), errno);
315 while ((len = fread(buf, 1, 4096, f)) > 0)
321 static int hextoint(char c)
323 if (c >= 'a' && c <= 'f')
325 else if (c >= 'A' && c <= 'F')
327 else if (c >= '0' && c <= '9')
333 static char *convert_query_hexchar(char *txt)
341 d1 = hextoint(*(txt + 1));
342 d2 = hextoint(*(txt + 2));
343 if (d1 < 0 || d2 < 0) {
344 memmove(txt, txt + 3, n - 2);
348 memmove(txt + 1, txt + 3, n - 2);
353 int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
355 char *o, *t, *txt, *value = NULL, c;
360 o = t = txt = xstrdup(txt_);
361 while ((c=*t) != '\0') {
365 } else if (c == '+') {
367 } else if (c == '%') {
368 t = convert_query_hexchar(t);
369 } else if (c == '&') {