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[ashd.git] / lib / resp.c
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1/*
2 ashd - A Sane HTTP Daemon
3 Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com>
4
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17*/
18
19#include <stdlib.h>
20#include <string.h>
21#include <stdio.h>
22#include <stdarg.h>
23
24#ifdef HAVE_CONFIG_H
25#include <config.h>
26#endif
27#include <utils.h>
28#include <resp.h>
29
30char *htmlquote(char *text)
31{
32 struct charbuf buf;
33
34 bufinit(buf);
35 for(; *text; text++) {
36 if(*text == '<')
37 bufcatstr(buf, "&lt;");
38 else if(*text == '>')
39 bufcatstr(buf, "&gt;");
40 else if(*text == '&')
41 bufcatstr(buf, "&amp;");
42 else
43 bufadd(buf, *text);
44 }
45 bufadd(buf, 0);
46 return(buf.b);
47}
48
49void simpleerror(int fd, int code, char *msg, char *fmt, ...)
50{
51 struct charbuf buf;
52 char *tmp1, *tmp2;
53 va_list args;
54 FILE *out;
55
56 va_start(args, fmt);
57 tmp1 = vsprintf2(fmt, args);
58 va_end(args);
59 tmp2 = htmlquote(tmp1);
60 free(tmp1);
61 bufinit(buf);
62 bufcatstr(buf, "<?xml version=\"1.0\" encoding=\"US-ASCII\"?>\r\n");
63 bufcatstr(buf, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\r\n");
64 bufcatstr(buf, "<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en-US\" xml:lang=\"en-US\">\r\n");
65 bufcatstr(buf, "<head>\r\n");
66 bprintf(&buf, "<title>%s</title>\r\n", msg);
67 bufcatstr(buf, "</head>\r\n");
68 bufcatstr(buf, "<body>\r\n");
69 bprintf(&buf, "<h1>%s</h1>\r\n", msg);
70 bprintf(&buf, "<p>%s</p>\r\n", tmp2);
71 bufcatstr(buf, "</body>\r\n");
72 bufcatstr(buf, "</html>\r\n");
73 free(tmp2);
74 out = fdopen(fd, "w");
75 fprintf(out, "HTTP/1.1 %i %s\r\n", code, msg);
76 fprintf(out, "Content-Type: text/html\r\n");
77 fprintf(out, "Content-Length: %i\r\n", buf.d);
78 fprintf(out, "\r\n");
79 fwrite(buf.b, 1, buf.d, out);
80 fclose(out);
81 buffree(buf);
82}