--- /dev/null
+/*
+ * $Id: rfc1123.c,v 1.1 1996/10/25 02:15:15 wessels Exp $
+ *
+ * DEBUG:
+ * AUTHOR: Harvest Derived
+ *
+ * SQUID Internet Object Cache http://www.nlanr.net/Squid/
+ * --------------------------------------------------------
+ *
+ * Squid is the result of efforts by numerous individuals from the
+ * Internet community. Development is led by Duane Wessels of the
+ * National Laboratory for Applied Network Research and funded by
+ * the National Science Foundation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/*
+ * Copyright (c) 1994, 1995. All rights reserved.
+ *
+ * The Harvest software was developed by the Internet Research Task
+ * Force Research Group on Resource Discovery (IRTF-RD):
+ *
+ * Mic Bowman of Transarc Corporation.
+ * Peter Danzig of the University of Southern California.
+ * Darren R. Hardy of the University of Colorado at Boulder.
+ * Udi Manber of the University of Arizona.
+ * Michael F. Schwartz of the University of Colorado at Boulder.
+ * Duane Wessels of the University of Colorado at Boulder.
+ *
+ * This copyright notice applies to software in the Harvest
+ * ``src/'' directory only. Users should consult the individual
+ * copyright notices in the ``components/'' subdirectories for
+ * copyright information about other software bundled with the
+ * Harvest source code distribution.
+ *
+ * TERMS OF USE
+ *
+ * The Harvest software may be used and re-distributed without
+ * charge, provided that the software origin and research team are
+ * cited in any use of the system. Most commonly this is
+ * accomplished by including a link to the Harvest Home Page
+ * (http://harvest.cs.colorado.edu/) from the query page of any
+ * Broker you deploy, as well as in the query result pages. These
+ * links are generated automatically by the standard Broker
+ * software distribution.
+ *
+ * The Harvest software is provided ``as is'', without express or
+ * implied warranty, and with no support nor obligation to assist
+ * in its use, correction, modification or enhancement. We assume
+ * no liability with respect to the infringement of copyrights,
+ * trade secrets, or any patents, and are not responsible for
+ * consequential damages. Proper use of the Harvest software is
+ * entirely the responsibility of the user.
+ *
+ * DERIVATIVE WORKS
+ *
+ * Users may make derivative works from the Harvest software, subject
+ * to the following constraints:
+ *
+ * - You must include the above copyright notice and these
+ * accompanying paragraphs in all forms of derivative works,
+ * and any documentation and other materials related to such
+ * distribution and use acknowledge that the software was
+ * developed at the above institutions.
+ *
+ * - You must notify IRTF-RD regarding your distribution of
+ * the derivative work.
+ *
+ * - You must clearly notify users that your are distributing
+ * a modified version and not the original Harvest software.
+ *
+ * - Any derivative product is also subject to these copyright
+ * and use restrictions.
+ *
+ * Note that the Harvest software is NOT in the public domain. We
+ * retain copyright, as specified above.
+ *
+ * HISTORY OF FREE SOFTWARE STATUS
+ *
+ * Originally we required sites to license the software in cases
+ * where they were going to build commercial products/services
+ * around Harvest. In June 1995 we changed this policy. We now
+ * allow people to use the core Harvest software (the code found in
+ * the Harvest ``src/'' directory) for free. We made this change
+ * in the interest of encouraging the widest possible deployment of
+ * the technology. The Harvest software is really a reference
+ * implementation of a set of protocols and formats, some of which
+ * we intend to standardize. We encourage commercial
+ * re-implementations of code complying to this set of standards.
+ */
+
+#include "config.h"
+
+
+/*
+ * Adapted from HTSUtils.c in CERN httpd 3.0 (http://info.cern.ch/httpd/)
+ * by Darren Hardy <hardy@cs.colorado.edu>, November 1994.
+ */
+#if HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#if HAVE_STRING_H
+#include <string.h>
+#endif
+#if HAVE_CTYPE_H
+#include <ctype.h>
+#endif
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#if HAVE_TIME_H
+#include <time.h>
+#endif
+#if HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#include "ansiproto.h"
+#include "util.h"
+
+static int make_month _PARAMS((char *s));
+static int make_num _PARAMS((char *s));
+
+static char *month_names[12] =
+{
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+};
+
+
+static int
+make_num(char *s)
+{
+ if (*s >= '0' && *s <= '9')
+ return 10 * (*s - '0') + *(s + 1) - '0';
+ else
+ return *(s + 1) - '0';
+}
+
+static int
+make_month(char *s)
+{
+ int i;
+
+ *s = toupper(*s);
+ *(s + 1) = tolower(*(s + 1));
+ *(s + 2) = tolower(*(s + 2));
+
+ for (i = 0; i < 12; i++)
+ if (!strncmp(month_names[i], s, 3))
+ return i;
+ return 0;
+}
+
+
+time_t
+parse_rfc1123(char *str)
+{
+ char *s;
+ struct tm tm;
+ time_t t;
+
+ if (!str)
+ return -1;
+
+ if ((s = strchr(str, ','))) { /* Thursday, 10-Jun-93 01:29:59 GMT */
+ s++; /* or: Thu, 10 Jan 1993 01:29:59 GMT */
+ while (*s && *s == ' ')
+ s++;
+ if (strchr(s, '-')) { /* First format */
+ if ((int) strlen(s) < 18)
+ return -1;
+ tm.tm_mday = make_num(s);
+ tm.tm_mon = make_month(s + 3);
+ tm.tm_year = make_num(s + 7);
+ tm.tm_hour = make_num(s + 10);
+ tm.tm_min = make_num(s + 13);
+ tm.tm_sec = make_num(s + 16);
+ } else { /* Second format */
+ if ((int) strlen(s) < 20)
+ return -1;
+ tm.tm_mday = make_num(s);
+ tm.tm_mon = make_month(s + 3);
+ tm.tm_year = (100 * make_num(s + 7) - 1900) + make_num(s + 9);
+ tm.tm_hour = make_num(s + 12);
+ tm.tm_min = make_num(s + 15);
+ tm.tm_sec = make_num(s + 18);
+
+ }
+ } else { /* Try the other format: */
+ s = str; /* Wed Jun 9 01:29:59 1993 GMT */
+ while (*s && *s == ' ')
+ s++;
+ if ((int) strlen(s) < 24)
+ return -1;
+ tm.tm_mday = make_num(s + 8);
+ tm.tm_mon = make_month(s + 4);
+ tm.tm_year = make_num(s + 22);
+ tm.tm_hour = make_num(s + 11);
+ tm.tm_min = make_num(s + 14);
+ tm.tm_sec = make_num(s + 17);
+ }
+ if (tm.tm_sec < 0 || tm.tm_sec > 59 ||
+ tm.tm_min < 0 || tm.tm_min > 59 ||
+ tm.tm_hour < 0 || tm.tm_hour > 23 ||
+ tm.tm_mday < 1 || tm.tm_mday > 31 ||
+ tm.tm_mon < 0 || tm.tm_mon > 11 ||
+ tm.tm_year < 70 || tm.tm_year > 120) {
+ return -1;
+ }
+ tm.tm_isdst = -1;
+
+#ifdef HAVE_TIMEGM
+ t = timegm(&tm);
+#elif HAVE_TM_GMTOFF
+ t = mktime(&tm);
+ {
+ time_t cur_t = time(NULL);
+ struct tm *local = localtime(&cur_t);
+ t += local->tm_gmtoff;
+ }
+#else
+ /* some systems do not have tm_gmtoff so we fake it */
+ t = mktime(&tm);
+ {
+ time_t dst = 0;
+ extern time_t timezone;
+ /*
+ * The following assumes a fixed DST offset of 1 hour,
+ * which is probably wrong.
+ */
+ if (tm.tm_isdst > 0)
+ dst = -3600;
+ t -= (timezone + dst);
+ }
+#endif
+ return t;
+}
+
+char *
+mkrfc1123(time_t t)
+{
+ static char buf[128];
+
+ struct tm *gmt = gmtime(&t);
+
+ buf[0] = '\0';
+ (void) strftime(buf, 127, "%A, %d-%b-%y %H:%M:%S GMT", gmt);
+ return buf;
+}
+
+char *
+mkhttpdlogtime(time_t * t)
+{
+ static char buf[128];
+
+ struct tm *gmt = gmtime(t);
+
+#ifndef USE_GMT
+ int gmt_min, gmt_hour, gmt_yday, day_offset;
+ size_t len;
+ struct tm *lt;
+ int min_offset;
+
+ /* localtime & gmtime may use the same static data */
+ gmt_min = gmt->tm_min;
+ gmt_hour = gmt->tm_hour;
+ gmt_yday = gmt->tm_yday;
+
+ lt = localtime(t);
+ day_offset = lt->tm_yday - gmt_yday;
+ min_offset = day_offset * 1440 + (lt->tm_hour - gmt_hour) * 60
+ + (lt->tm_min - gmt_min);
+
+ /* wrap round on end of year */
+ if (day_offset > 1)
+ day_offset = -1;
+ else if (day_offset < -1)
+ day_offset = 1;
+
+ len = strftime(buf, 127 - 5, "%d/%b/%Y:%H:%M:%S ", lt);
+ (void) sprintf(buf + len, "%+03d%02d",
+ (min_offset / 60) % 24,
+ min_offset % 60);
+#else /* USE_GMT */
+ buf[0] = '\0';
+ (void) strftime(buf, 127, "%d/%b/%Y:%H:%M:%S -000", gmt);
+#endif /* USE_GMT */
+
+ return buf;
+}
+
+#if 0
+int
+main()
+{
+ char *x;
+ time_t t, pt;
+
+ t = time(NULL);
+ x = mkrfc1123(t);
+ printf("HTTP Time: %s\n", x);
+
+ pt = parse_rfc1123(x);
+ printf("Parsed: %d vs. %d\n", pt, t);
+}
+
+#endif
projects / thirdparty / squid.git / commitdiff
