1 /* html.c: helper functions for html output
3 * Copyright (C) 2006 Lars Hjemli
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
16 /* Percent-encoding of each character, except: a-zA-Z0-9!$()*,./:;@- */
17 static const char* url_escape_table[256] = {
18 "%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09",
19 "%0a", "%0b", "%0c", "%0d", "%0e", "%0f", "%10", "%11", "%12", "%13",
20 "%14", "%15", "%16", "%17", "%18", "%19", "%1a", "%1b", "%1c", "%1d",
21 "%1e", "%1f", "%20", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
22 "%2b", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%3c", "%3d",
23 "%3e", "%3f", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
24 0, 0, 0, 0, 0, 0, 0, 0, 0, "%5c", 0, "%5e", 0, "%60", 0, 0, 0, 0, 0,
25 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%7b",
26 "%7c", "%7d", 0, "%7f", "%80", "%81", "%82", "%83", "%84", "%85",
27 "%86", "%87", "%88", "%89", "%8a", "%8b", "%8c", "%8d", "%8e", "%8f",
28 "%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97", "%98", "%99",
29 "%9a", "%9b", "%9c", "%9d", "%9e", "%9f", "%a0", "%a1", "%a2", "%a3",
30 "%a4", "%a5", "%a6", "%a7", "%a8", "%a9", "%aa", "%ab", "%ac", "%ad",
31 "%ae", "%af", "%b0", "%b1", "%b2", "%b3", "%b4", "%b5", "%b6", "%b7",
32 "%b8", "%b9", "%ba", "%bb", "%bc", "%bd", "%be", "%bf", "%c0", "%c1",
33 "%c2", "%c3", "%c4", "%c5", "%c6", "%c7", "%c8", "%c9", "%ca", "%cb",
34 "%cc", "%cd", "%ce", "%cf", "%d0", "%d1", "%d2", "%d3", "%d4", "%d5",
35 "%d6", "%d7", "%d8", "%d9", "%da", "%db", "%dc", "%dd", "%de", "%df",
36 "%e0", "%e1", "%e2", "%e3", "%e4", "%e5", "%e6", "%e7", "%e8", "%e9",
37 "%ea", "%eb", "%ec", "%ed", "%ee", "%ef", "%f0", "%f1", "%f2", "%f3",
38 "%f4", "%f5", "%f6", "%f7", "%f8", "%f9", "%fa", "%fb", "%fc", "%fd",
42 static int htmlfd = STDOUT_FILENO;
44 char *fmt(const char *format, ...)
46 static char buf[8][1024];
54 va_start(args, format);
55 len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
57 if (len > sizeof(buf[bufidx])) {
58 fprintf(stderr, "[html.c] string truncated: %s\n", format);
64 void html_raw(const char *data, size_t size)
66 if (write(htmlfd, data, size) != size)
67 fprintf(stderr, "[html.c] html output truncated.\n");
70 void html(const char *txt)
72 html_raw(txt, strlen(txt));
75 void htmlf(const char *format, ...)
77 static char buf[65536];
80 va_start(args, format);
81 vsnprintf(buf, sizeof(buf), format, args);
86 void html_status(int code, const char *msg, int more_headers)
88 htmlf("Status: %d %s\n", code, msg);
93 void html_txt(const char *txt)
98 if (c == '<' || c == '>' || c == '&') {
99 html_raw(txt, t - txt);
114 void html_ntxt(int len, const char *txt)
117 while (t && *t && len--) {
119 if (c == '<' || c == '>' || c == '&') {
120 html_raw(txt, t - txt);
132 html_raw(txt, t - txt);
137 void html_attr(const char *txt)
142 if (c == '<' || c == '>' || c == '\'' || c == '\"' || c == '&') {
143 html_raw(txt, t - txt);
162 void html_url_path(const char *txt)
166 unsigned char c = *t;
167 const char *e = url_escape_table[c];
168 if (e && c != '+' && c != '&') {
169 html_raw(txt, t - txt);
179 void html_url_arg(const char *txt)
183 unsigned char c = *t;
184 const char *e = url_escape_table[c];
188 html_raw(txt, t - txt);
198 void html_hidden(const char *name, const char *value)
200 html("<input type='hidden' name='");
207 void html_option(const char *value, const char *text, const char *selected_value)
209 html("<option value='");
212 if (selected_value && !strcmp(selected_value, value))
213 html(" selected='selected'");
219 void html_intoption(int value, const char *text, int selected_value)
221 htmlf("<option value='%d'%s>", value,
222 value == selected_value ? " selected='selected'" : "");
227 void html_link_open(const char *url, const char *title, const char *class)
242 void html_link_close(void)
247 void html_fileperm(unsigned short mode)
249 htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
250 (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
253 int html_include(const char *filename)
259 if (!(f = fopen(filename, "r"))) {
260 fprintf(stderr, "[cgit] Failed to include file %s: %s (%d).\n",
261 filename, strerror(errno), errno);
264 while ((len = fread(buf, 1, 4096, f)) > 0)
270 static int hextoint(char c)
272 if (c >= 'a' && c <= 'f')
274 else if (c >= 'A' && c <= 'F')
276 else if (c >= '0' && c <= '9')
282 static char *convert_query_hexchar(char *txt)
290 d1 = hextoint(*(txt + 1));
291 d2 = hextoint(*(txt + 2));
292 if (d1 < 0 || d2 < 0) {
293 memmove(txt, txt + 3, n - 2);
297 memmove(txt + 1, txt + 3, n - 2);
302 int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
304 char *o, *t, *txt, *value = NULL, c;
309 o = t = txt = strdup(txt_);
311 printf("Out of memory\n");
314 while ((c=*t) != '\0') {
318 } else if (c == '+') {
320 } else if (c == '%') {
321 t = convert_query_hexchar(t);
322 } else if (c == '&') {