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)
17 /* Percent-encoding of each character, except: a-zA-Z0-9!$()*,./:;@- */
18 static const char* url_escape_table[256] = {
19 "%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09",
20 "%0a", "%0b", "%0c", "%0d", "%0e", "%0f", "%10", "%11", "%12", "%13",
21 "%14", "%15", "%16", "%17", "%18", "%19", "%1a", "%1b", "%1c", "%1d",
22 "%1e", "%1f", "%20", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
23 "%2b", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%3c", "%3d",
24 "%3e", "%3f", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
25 0, 0, 0, 0, 0, 0, 0, 0, 0, "%5c", 0, "%5e", 0, "%60", 0, 0, 0, 0, 0,
26 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%7b",
27 "%7c", "%7d", 0, "%7f", "%80", "%81", "%82", "%83", "%84", "%85",
28 "%86", "%87", "%88", "%89", "%8a", "%8b", "%8c", "%8d", "%8e", "%8f",
29 "%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97", "%98", "%99",
30 "%9a", "%9b", "%9c", "%9d", "%9e", "%9f", "%a0", "%a1", "%a2", "%a3",
31 "%a4", "%a5", "%a6", "%a7", "%a8", "%a9", "%aa", "%ab", "%ac", "%ad",
32 "%ae", "%af", "%b0", "%b1", "%b2", "%b3", "%b4", "%b5", "%b6", "%b7",
33 "%b8", "%b9", "%ba", "%bb", "%bc", "%bd", "%be", "%bf", "%c0", "%c1",
34 "%c2", "%c3", "%c4", "%c5", "%c6", "%c7", "%c8", "%c9", "%ca", "%cb",
35 "%cc", "%cd", "%ce", "%cf", "%d0", "%d1", "%d2", "%d3", "%d4", "%d5",
36 "%d6", "%d7", "%d8", "%d9", "%da", "%db", "%dc", "%dd", "%de", "%df",
37 "%e0", "%e1", "%e2", "%e3", "%e4", "%e5", "%e6", "%e7", "%e8", "%e9",
38 "%ea", "%eb", "%ec", "%ed", "%ee", "%ef", "%f0", "%f1", "%f2", "%f3",
39 "%f4", "%f5", "%f6", "%f7", "%f8", "%f9", "%fa", "%fb", "%fc", "%fd",
43 static int htmlfd = STDOUT_FILENO;
45 char *fmt(const char *format, ...)
47 static char buf[8][1024];
55 va_start(args, format);
56 len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
58 if (len > sizeof(buf[bufidx])) {
59 fprintf(stderr, "[html.c] string truncated: %s\n", format);
65 void html_raw(const char *data, size_t size)
67 if (write(htmlfd, data, size) != size)
68 fprintf(stderr, "[html.c] html output truncated.\n");
71 void html(const char *txt)
73 html_raw(txt, strlen(txt));
76 void htmlf(const char *format, ...)
78 static char buf[65536];
81 va_start(args, format);
82 vsnprintf(buf, sizeof(buf), format, args);
87 void html_status(int code, const char *msg, int more_headers)
89 htmlf("Status: %d %s\n", code, msg);
94 void html_txt(const char *txt)
99 if (c == '<' || c == '>' || c == '&') {
100 html_raw(txt, t - txt);
115 void html_ntxt(int len, const char *txt)
118 while (t && *t && len--) {
120 if (c == '<' || c == '>' || c == '&') {
121 html_raw(txt, t - txt);
133 html_raw(txt, t - txt);
138 void html_attr(const char *txt)
143 if (c == '<' || c == '>' || c == '\'' || c == '\"' || c == '&') {
144 html_raw(txt, t - txt);
163 void html_url_path(const char *txt)
167 unsigned char c = *t;
168 const char *e = url_escape_table[c];
169 if (e && c != '+' && c != '&') {
170 html_raw(txt, t - txt);
180 void html_url_arg(const char *txt)
184 unsigned char c = *t;
185 const char *e = url_escape_table[c];
189 html_raw(txt, t - txt);
199 void html_hidden(const char *name, const char *value)
201 html("<input type='hidden' name='");
208 void html_option(const char *value, const char *text, const char *selected_value)
210 html("<option value='");
213 if (selected_value && !strcmp(selected_value, value))
214 html(" selected='selected'");
220 void html_intoption(int value, const char *text, int selected_value)
222 htmlf("<option value='%d'%s>", value,
223 value == selected_value ? " selected='selected'" : "");
228 void html_link_open(const char *url, const char *title, const char *class)
243 void html_link_close(void)
248 void html_fileperm(unsigned short mode)
250 htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
251 (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
254 int html_include(const char *filename)
260 if (!(f = fopen(filename, "r"))) {
261 fprintf(stderr, "[cgit] Failed to include file %s: %s (%d).\n",
262 filename, strerror(errno), errno);
265 while ((len = fread(buf, 1, 4096, f)) > 0)
271 static int hextoint(char c)
273 if (c >= 'a' && c <= 'f')
275 else if (c >= 'A' && c <= 'F')
277 else if (c >= '0' && c <= '9')
283 static char *convert_query_hexchar(char *txt)
291 d1 = hextoint(*(txt + 1));
292 d2 = hextoint(*(txt + 2));
293 if (d1 < 0 || d2 < 0) {
294 memmove(txt, txt + 3, n - 2);
298 memmove(txt + 1, txt + 3, n - 2);
303 int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
305 char *o, *t, *txt, *value = NULL, c;
310 o = t = txt = strdup(txt_);
312 printf("Out of memory\n");
315 while ((c=*t) != '\0') {
319 } else if (c == '+') {
321 } else if (c == '%') {
322 t = convert_query_hexchar(t);
323 } else if (c == '&') {