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git.ipfire.org Git - thirdparty/squid.git/blob - lib/rfc1123.c
6 * AUTHOR: Harvest Derived
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20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2 of the License, or
23 * (at your option) any later version.
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
40 * Adapted from HTSUtils.c in CERN httpd 3.0 (http://info.cern.ch/httpd/)
41 * by Darren Hardy <hardy@cs.colorado.edu>, November 1994.
56 #include <sys/types.h>
67 #define RFC850_STRFTIME "%A, %d-%b-%y %H:%M:%S GMT"
68 #define RFC1123_STRFTIME "%a, %d %b %Y %H:%M:%S GMT"
70 static int make_month(const char *s
);
71 static int make_num(const char *s
);
73 static const char *month_names
[12] = {
74 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
75 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
80 make_num(const char *s
)
82 if (*s
>= '0' && *s
<= '9')
83 return 10 * (*s
- '0') + *(s
+ 1) - '0';
85 return *(s
+ 1) - '0';
89 make_month(const char *s
)
94 month
[0] = xtoupper(*s
);
95 month
[1] = xtolower(*(s
+ 1));
96 month
[2] = xtolower(*(s
+ 2));
98 for (i
= 0; i
< 12; i
++)
99 if (!strncmp(month_names
[i
], month
, 3))
105 tmSaneValues(struct tm
*tm
)
107 if (tm
->tm_sec
< 0 || tm
->tm_sec
> 59)
109 if (tm
->tm_min
< 0 || tm
->tm_min
> 59)
111 if (tm
->tm_hour
< 0 || tm
->tm_hour
> 23)
113 if (tm
->tm_mday
< 1 || tm
->tm_mday
> 31)
115 if (tm
->tm_mon
< 0 || tm
->tm_mon
> 11)
121 parse_date_elements(const char *day
, const char *month
, const char *year
,
122 const char *time
, const char *zone
) {
125 memset(&tm
, 0, sizeof(tm
));
127 if (!day
|| !month
|| !year
|| !time
)
129 tm
.tm_mday
= atoi(day
);
130 tm
.tm_mon
= make_month(month
);
133 tm
.tm_year
= atoi(year
);
134 if (strlen(year
) == 4)
136 else if (tm
.tm_year
< 70)
138 else if (tm
.tm_year
> 19000)
140 tm
.tm_hour
= make_num(time
);
141 t
= strchr(time
, ':');
148 tm
.tm_sec
= atoi(t
+ 1);
149 return tmSaneValues(&tm
) ? &tm
: NULL
;
153 parse_date(const char *str
) {
164 xstrncpy(tmp
, str
, 64);
166 for (t
= strtok(tmp
, ", "); t
; t
= strtok(NULL
, ", ")) {
180 } else if (strchr(t
, ':'))
191 tm
= parse_date_elements(day
, month
, year
, time
, zone
);
197 parse_rfc1123(const char *str
)
203 tm
= parse_date(str
);
209 #elif HAVE_TM_TM_GMTOFF
212 struct tm
*local
= localtime(&t
);
213 t
+= local
->tm_gmtoff
;
216 /* some systems do not have tm_gmtoff so we fake it */
220 #if defined (_TIMEZONE)
221 #elif defined (_timezone)
222 #elif defined(_SQUID_AIX_)
223 #elif defined(_SQUID_CYGWIN_)
224 #elif defined(_SQUID_MSWIN_)
225 #elif defined(_SQUID_SGI_)
227 extern long timezone
;
230 * The following assumes a fixed DST offset of 1 hour,
231 * which is probably wrong.
233 if (tm
->tm_isdst
> 0)
235 #if defined ( _timezone) || defined(_SQUID_WIN32_)
236 t
-= (_timezone
+ dst
);
238 t
-= (timezone
+ dst
);
248 static char buf
[128];
250 struct tm
*gmt
= gmtime(&t
);
253 strftime(buf
, 127, RFC1123_STRFTIME
, gmt
);
258 mkhttpdlogtime(const time_t * t
)
260 static char buf
[128];
262 struct tm
*gmt
= gmtime(t
);
265 int gmt_min
, gmt_hour
, gmt_yday
, day_offset
;
270 /* localtime & gmtime may use the same static data */
271 gmt_min
= gmt
->tm_min
;
272 gmt_hour
= gmt
->tm_hour
;
273 gmt_yday
= gmt
->tm_yday
;
277 day_offset
= lt
->tm_yday
- gmt_yday
;
278 /* wrap round on end of year */
281 else if (day_offset
< -1)
284 min_offset
= day_offset
* 1440 + (lt
->tm_hour
- gmt_hour
) * 60
285 + (lt
->tm_min
- gmt_min
);
287 len
= strftime(buf
, 127 - 5, "%d/%b/%Y:%H:%M:%S ", lt
);
288 snprintf(buf
+ len
, 128 - len
, "%+03d%02d",
289 (min_offset
/ 60) % 24,
293 strftime(buf
, 127, "%d/%b/%Y:%H:%M:%S -000", gmt
);
308 printf("HTTP Time: %s\n", x
);
310 pt
= parse_rfc1123(x
);
311 printf("Parsed: %d vs. %d\n", pt
, t
);