Commit | Line | Data |
---|---|---|
d422fdfd FT |
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> | |
b4164ce6 FT |
23 | #include <time.h> |
24 | #include <regex.h> | |
d422fdfd FT |
25 | |
26 | #ifdef HAVE_CONFIG_H | |
27 | #include <config.h> | |
28 | #endif | |
29 | #include <utils.h> | |
30 | #include <resp.h> | |
31 | ||
32 | char *htmlquote(char *text) | |
33 | { | |
34 | struct charbuf buf; | |
35 | ||
36 | bufinit(buf); | |
37 | for(; *text; text++) { | |
38 | if(*text == '<') | |
39 | bufcatstr(buf, "<"); | |
40 | else if(*text == '>') | |
41 | bufcatstr(buf, ">"); | |
42 | else if(*text == '&') | |
43 | bufcatstr(buf, "&"); | |
44 | else | |
45 | bufadd(buf, *text); | |
46 | } | |
47 | bufadd(buf, 0); | |
48 | return(buf.b); | |
49 | } | |
50 | ||
51 | void simpleerror(int fd, int code, char *msg, char *fmt, ...) | |
52 | { | |
53 | struct charbuf buf; | |
54 | char *tmp1, *tmp2; | |
55 | va_list args; | |
56 | FILE *out; | |
57 | ||
58 | va_start(args, fmt); | |
59 | tmp1 = vsprintf2(fmt, args); | |
60 | va_end(args); | |
61 | tmp2 = htmlquote(tmp1); | |
62 | free(tmp1); | |
63 | bufinit(buf); | |
64 | bufcatstr(buf, "<?xml version=\"1.0\" encoding=\"US-ASCII\"?>\r\n"); | |
65 | bufcatstr(buf, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\r\n"); | |
66 | bufcatstr(buf, "<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en-US\" xml:lang=\"en-US\">\r\n"); | |
67 | bufcatstr(buf, "<head>\r\n"); | |
68 | bprintf(&buf, "<title>%s</title>\r\n", msg); | |
69 | bufcatstr(buf, "</head>\r\n"); | |
70 | bufcatstr(buf, "<body>\r\n"); | |
71 | bprintf(&buf, "<h1>%s</h1>\r\n", msg); | |
72 | bprintf(&buf, "<p>%s</p>\r\n", tmp2); | |
73 | bufcatstr(buf, "</body>\r\n"); | |
74 | bufcatstr(buf, "</html>\r\n"); | |
75 | free(tmp2); | |
76 | out = fdopen(fd, "w"); | |
77 | fprintf(out, "HTTP/1.1 %i %s\r\n", code, msg); | |
78 | fprintf(out, "Content-Type: text/html\r\n"); | |
79 | fprintf(out, "Content-Length: %i\r\n", buf.d); | |
80 | fprintf(out, "\r\n"); | |
81 | fwrite(buf.b, 1, buf.d, out); | |
82 | fclose(out); | |
83 | buffree(buf); | |
84 | } | |
b4164ce6 FT |
85 | |
86 | char *fmthttpdate(time_t time) | |
87 | { | |
88 | /* I avoid using strftime, since it depends on locale settings. */ | |
89 | static char *days[] = {"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"}; | |
90 | static char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
91 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; | |
92 | struct tm *tm; | |
93 | ||
94 | tm = gmtime(&time); | |
95 | return(sprintf3("%s, %i %s %i %02i:%02i:%02i GMT", days[(tm->tm_wday + 6) % 7], tm->tm_mday, months[tm->tm_mon], tm->tm_year + 1900, tm->tm_hour, tm->tm_min, tm->tm_sec)); | |
96 | } | |
97 | ||
98 | time_t parsehttpdate(char *date) | |
99 | { | |
100 | static regex_t *spec = NULL; | |
101 | static char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
102 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; | |
103 | int i; | |
104 | regmatch_t g[11]; | |
105 | struct tm tm; | |
106 | int tz; | |
107 | ||
108 | int gtoi(regmatch_t g) | |
109 | { | |
110 | int i, n; | |
111 | ||
112 | for(i = g.rm_so, n = 0; i < g.rm_eo; i++) | |
113 | n = (n * 10) + (date[i] - '0'); | |
114 | return(n); | |
115 | } | |
116 | ||
117 | int gstrcmp(regmatch_t g, char *str) { | |
118 | if(g.rm_eo - g.rm_so != strlen(str)) | |
119 | return(1); | |
120 | return(strncasecmp(date + g.rm_so, str, g.rm_eo - g.rm_so)); | |
121 | } | |
122 | ||
123 | if(spec == NULL) { | |
124 | omalloc(spec); | |
125 | if(regcomp(spec, "^[A-Z]{3}, +([0-9]+) +([A-Z]{3}) +([0-9]+) +([0-9]{2}):([0-9]{2}):([0-9]{2}) +(([A-Z]+)|[+-]([0-9]{2})([0-9]{2}))$", REG_EXTENDED | REG_ICASE)) { | |
126 | free(spec); | |
127 | spec = NULL; | |
128 | return(0); | |
129 | } | |
130 | } | |
131 | if(regexec(spec, date, 11, g, 0)) | |
132 | return(0); | |
133 | tm.tm_mday = gtoi(g[1]); | |
134 | tm.tm_year = gtoi(g[3]) - 1900; | |
135 | tm.tm_hour = gtoi(g[4]); | |
136 | tm.tm_min = gtoi(g[5]); | |
137 | tm.tm_sec = gtoi(g[6]); | |
138 | ||
139 | tm.tm_mon = -1; | |
140 | for(i = 0; i < 12; i++) { | |
141 | if(!gstrcmp(g[2], months[i])) { | |
142 | tm.tm_mon = i; | |
143 | break; | |
144 | } | |
145 | } | |
146 | if(tm.tm_mon < 0) | |
147 | return(0); | |
148 | ||
149 | if(g[8].rm_so > 0) { | |
150 | if(!gstrcmp(g[8], "GMT")) | |
151 | tz = 0; | |
152 | else | |
153 | return(0); | |
154 | } else if((g[9].rm_so > 0) && (g[10].rm_so > 0)) { | |
155 | tz = gtoi(g[9]) * 3600 + gtoi(g[10]) * 60; | |
156 | if(date[g[7].rm_so] == '-') | |
157 | tz = -tz; | |
158 | } else { | |
159 | return(0); | |
160 | } | |
161 | ||
162 | return(timegm(&tm) - tz); | |
163 | } |