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
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
|
/* html.c: helper functions for html output
*
* Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#include "cgit.h"
#include "html.h"
#include "url.h"
/* Percent-encoding of each character, except: a-zA-Z0-9!$()*,./:;@- */
static const char* url_escape_table[256] = {
"%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07",
"%08", "%09", "%0a", "%0b", "%0c", "%0d", "%0e", "%0f",
"%10", "%11", "%12", "%13", "%14", "%15", "%16", "%17",
"%18", "%19", "%1a", "%1b", "%1c", "%1d", "%1e", "%1f",
"%20", NULL, "%22", "%23", NULL, "%25", "%26", "%27",
NULL, NULL, NULL, "%2b", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, "%3c", "%3d", "%3e", "%3f",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, "%5c", NULL, "%5e", NULL,
"%60", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "%7b", "%7c", "%7d", NULL, "%7f",
"%80", "%81", "%82", "%83", "%84", "%85", "%86", "%87",
"%88", "%89", "%8a", "%8b", "%8c", "%8d", "%8e", "%8f",
"%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97",
"%98", "%99", "%9a", "%9b", "%9c", "%9d", "%9e", "%9f",
"%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%a7",
"%a8", "%a9", "%aa", "%ab", "%ac", "%ad", "%ae", "%af",
"%b0", "%b1", "%b2", "%b3", "%b4", "%b5", "%b6", "%b7",
"%b8", "%b9", "%ba", "%bb", "%bc", "%bd", "%be", "%bf",
"%c0", "%c1", "%c2", "%c3", "%c4", "%c5", "%c6", "%c7",
"%c8", "%c9", "%ca", "%cb", "%cc", "%cd", "%ce", "%cf",
"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7",
"%d8", "%d9", "%da", "%db", "%dc", "%dd", "%de", "%df",
"%e0", "%e1", "%e2", "%e3", "%e4", "%e5", "%e6", "%e7",
"%e8", "%e9", "%ea", "%eb", "%ec", "%ed", "%ee", "%ef",
"%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7",
"%f8", "%f9", "%fa", "%fb", "%fc", "%fd", "%fe", "%ff"
};
char *fmt(const char *format, ...)
{
static char buf[8][1024];
static int bufidx;
int len;
va_list args;
bufidx++;
bufidx &= 7;
va_start(args, format);
len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
va_end(args);
if (len > sizeof(buf[bufidx])) {
fprintf(stderr, "[html.c] string truncated: %s\n", format);
exit(1);
}
return buf[bufidx];
}
char *fmtalloc(const char *format, ...)
{
struct strbuf sb = STRBUF_INIT;
va_list args;
va_start(args, format);
strbuf_vaddf(&sb, format, args);
va_end(args);
return strbuf_detach(&sb, NULL);
}
void html_raw(const char *data, size_t size)
{
if (write(STDOUT_FILENO, data, size) != size)
die_errno("write error on html output");
}
void html(const char *txt)
{
html_raw(txt, strlen(txt));
}
void htmlf(const char *format, ...)
{
va_list args;
struct strbuf buf = STRBUF_INIT;
va_start(args, format);
strbuf_vaddf(&buf, format, args);
va_end(args);
html(buf.buf);
strbuf_release(&buf);
}
void html_txtf(const char *format, ...)
{
va_list args;
va_start(args, format);
html_vtxtf(format, args);
va_end(args);
}
void html_vtxtf(const char *format, va_list ap)
{
va_list cp;
struct strbuf buf = STRBUF_INIT;
va_copy(cp, ap);
strbuf_vaddf(&buf, format, cp);
va_end(cp);
html_txt(buf.buf);
strbuf_release(&buf);
}
void html_txt(const char *txt)
{
if (txt)
html_ntxt(txt, strlen(txt));
}
ssize_t html_ntxt(const char *txt, size_t len)
{
const char *t = txt;
ssize_t slen;
if (len > SSIZE_MAX)
return -1;
slen = (ssize_t) len;
while (t && *t && slen--) {
int c = *t;
if (c == '<' || c == '>' || c == '&') {
html_raw(txt, t - txt);
if (c == '>')
html(">");
else if (c == '<')
html("<");
else if (c == '&')
html("&");
txt = t + 1;
}
t++;
}
if (t != txt)
html_raw(txt, t - txt);
return slen;
}
void html_attrf(const char *fmt, ...)
{
va_list ap;
struct strbuf sb = STRBUF_INIT;
va_start(ap, fmt);
strbuf_vaddf(&sb, fmt, ap);
va_end(ap);
html_attr(sb.buf);
strbuf_release(&sb);
}
void html_attr(const char *txt)
{
const char *t = txt;
while (t && *t) {
int c = *t;
if (c == '<' || c == '>' || c == '\'' || c == '\"' || c == '&') {
html_raw(txt, t - txt);
if (c == '>')
html(">");
else if (c == '<')
html("<");
else if (c == '\'')
html("'");
else if (c == '"')
html(""");
else if (c == '&')
html("&");
txt = t + 1;
}
t++;
}
if (t != txt)
html(txt);
}
void html_url_path(const char *txt)
{
const char *t = txt;
while (t && *t) {
unsigned char c = *t;
const char *e = url_escape_table[c];
if (e && c != '+' && c != '&') {
html_raw(txt, t - txt);
html(e);
txt = t + 1;
}
t++;
}
if (t != txt)
html(txt);
}
void html_url_arg(const char *txt)
{
const char *t = txt;
while (t && *t) {
unsigned char c = *t;
const char *e = url_escape_table[c];
if (c == ' ')
e = "+";
if (e) {
html_raw(txt, t - txt);
html(e);
txt = t + 1;
}
t++;
}
if (t != txt)
html(txt);
}
void html_header_arg_in_quotes(const char *txt)
{
const char *t = txt;
while (t && *t) {
unsigned char c = *t;
const char *e = NULL;
if (c == '\\')
e = "\\\\";
else if (c == '\r')
e = "\\r";
else if (c == '\n')
e = "\\n";
else if (c == '"')
e = "\\\"";
if (e) {
html_raw(txt, t - txt);
html(e);
txt = t + 1;
}
t++;
}
if (t != txt)
html(txt);
}
void html_hidden(const char *name, const char *value)
{
html("<input type='hidden' name='");
html_attr(name);
html("' value='");
html_attr(value);
html("'/>");
}
void html_option(const char *value, const char *text, const char *selected_value)
{
html("<option value='");
html_attr(value);
html("'");
if (selected_value && !strcmp(selected_value, value))
html(" selected='selected'");
html(">");
html_txt(text);
html("</option>\n");
}
void html_intoption(int value, const char *text, int selected_value)
{
htmlf("<option value='%d'%s>", value,
value == selected_value ? " selected='selected'" : "");
html_txt(text);
html("</option>");
}
void html_link_open(const char *url, const char *title, const char *class)
{
html("<a href='");
html_attr(url);
if (title) {
html("' title='");
html_attr(title);
}
if (class) {
html("' class='");
html_attr(class);
}
html("'>");
}
void html_link_close(void)
{
html("</a>");
}
void html_fileperm(unsigned short mode)
{
htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
(mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
}
int html_include(const char *filename)
{
FILE *f;
char buf[4096];
size_t len;
if (!(f = fopen(filename, "r"))) {
fprintf(stderr, "[cgit] Failed to include file %s: %s (%d).\n",
filename, strerror(errno), errno);
return -1;
}
while ((len = fread(buf, 1, 4096, f)) > 0)
html_raw(buf, len);
fclose(f);
return 0;
}
void http_parse_querystring(const char *txt, void (*fn)(const char *name, const char *value))
{
const char *t = txt;
while (t && *t) {
char *name = url_decode_parameter_name(&t);
if (*name) {
char *value = url_decode_parameter_value(&t);
fn(name, value);
free(value);
}
free(name);
}
}
|
