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-rw-r--r--usr.sbin/nsd/compat/strptime.c349
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diff --git a/usr.sbin/nsd/compat/strptime.c b/usr.sbin/nsd/compat/strptime.c
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+/** strptime workaround (for oa macos leopard)
+ * This strptime follows the man strptime (2001-11-12)
+ * conforming to SUSv2, POSIX.1-2001
+ *
+ * This very simple version of strptime has no:
+ * - E alternatives
+ * - O alternatives
+ * - Glibc additions
+ * - Does not process week numbers
+ * - Does not properly processes year day
+ *
+ * LICENSE
+ * Copyright (c) 2008, NLnet Labs, Matthijs Mekking
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of NLnetLabs nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ **/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef HAVE_CONFIG_H
+#include <time.h>
+#endif
+
+#ifndef STRPTIME_WORKS
+
+#define TM_YEAR_BASE 1900
+
+#include <ctype.h>
+#include <string.h>
+
+static const char *abb_weekdays[] = {
+ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL
+};
+static const char *full_weekdays[] = {
+ "Sunday", "Monday", "Tuesday", "Wednesday",
+ "Thursday", "Friday", "Saturday", NULL
+};
+static const char *abb_months[] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", NULL
+};
+static const char *full_months[] = {
+ "January", "February", "March", "April", "May", "June",
+ "July", "August", "September", "October", "November", "December", NULL
+};
+static const char *ampm[] = {
+ "am", "pm", NULL
+};
+
+static int
+match_string(const char **buf, const char **strs)
+{
+ int i = 0;
+
+ for (i = 0; strs[i] != NULL; i++) {
+ int len = strlen(strs[i]);
+ if (strncasecmp (*buf, strs[i], len) == 0) {
+ *buf += len;
+ return i;
+ }
+ }
+ return -1;
+}
+
+static int
+str2int(const char **buf, int max)
+{
+ int ret=0, count=0;
+
+ while (*buf[0] != '\0' && isdigit(*buf[0]) && count<max) {
+ ret = ret*10 + (*buf[0] - '0');
+ (*buf)++;
+ count++;
+ }
+
+ if (!count)
+ return -1;
+ return ret;
+}
+
+/** Converts the character string s to values which are stored in tm
+ * using the format specified by format
+ **/
+char *
+nsd_strptime(const char *s, const char *format, struct tm *tm)
+{
+ int c, alt_format, ret;
+ int split_year = 0;
+
+ while ((c = *format) != '\0') {
+ alt_format = 0;
+
+ /* whitespace, literal or format */
+ if (isspace(c)) { /* whitespace */
+ /** whitespace matches zero or more whitespace characters in the
+ * input string.
+ **/
+ while (isspace(*s))
+ s++;
+ }
+ else if (c == '%') { /* format */
+ format++;
+ c = *format;
+ switch (c) {
+ case '%': /* %% is converted to % */
+ if (*s != c) {
+ return NULL;
+ }
+ s++;
+ break;
+ case 'a': /* weekday name, abbreviated or full */
+ case 'A':
+ ret = match_string(&s, full_weekdays);
+ if (ret < 0)
+ ret = match_string(&s, abb_weekdays);
+ if (ret < 0) {
+ return NULL;
+ }
+ tm->tm_wday = ret;
+ break;
+ case 'b': /* month name, abbreviated or full */
+ case 'B':
+ case 'h':
+ ret = match_string(&s, full_months);
+ if (ret < 0)
+ ret = match_string(&s, abb_months);
+ if (ret < 0) {
+ return NULL;
+ }
+ tm->tm_mon = ret;
+ break;
+ case 'c': /* date and time representation */
+ if (!(s = nsd_strptime(s, "%x %X", tm))) {
+ return NULL;
+ }
+ break;
+ case 'C': /* century number */
+ ret = str2int(&s, 2);
+ if (ret < 0 || ret > 99) { /* must be in [00,99] */
+ return NULL;
+ }
+
+ if (split_year) {
+ tm->tm_year = ret*100 + (tm->tm_year%100);
+ }
+ else {
+ tm->tm_year = ret*100 - TM_YEAR_BASE;
+ split_year = 1;
+ }
+ break;
+ case 'd': /* day of month */
+ case 'e':
+ ret = str2int(&s, 2);
+ if (ret < 1 || ret > 31) { /* must be in [01,31] */
+ return NULL;
+ }
+ tm->tm_mday = ret;
+ break;
+ case 'D': /* equivalent to %m/%d/%y */
+ if (!(s = nsd_strptime(s, "%m/%d/%y", tm))) {
+ return NULL;
+ }
+ break;
+ case 'H': /* hour */
+ ret = str2int(&s, 2);
+ if (ret < 0 || ret > 23) { /* must be in [00,23] */
+ return NULL;
+ }
+ tm->tm_hour = ret;
+ break;
+ case 'I': /* 12hr clock hour */
+ ret = str2int(&s, 2);
+ if (ret < 1 || ret > 12) { /* must be in [01,12] */
+ return NULL;
+ }
+ if (ret == 12) /* actually [0,11] */
+ ret = 0;
+ tm->tm_hour = ret;
+ break;
+ case 'j': /* day of year */
+ ret = str2int(&s, 2);
+ if (ret < 1 || ret > 366) { /* must be in [001,366] */
+ return NULL;
+ }
+ tm->tm_yday = ret;
+ break;
+ case 'm': /* month */
+ ret = str2int(&s, 2);
+ if (ret < 1 || ret > 12) { /* must be in [01,12] */
+ return NULL;
+ }
+ /* months go from 0-11 */
+ tm->tm_mon = (ret-1);
+ break;
+ case 'M': /* minute */
+ ret = str2int(&s, 2);
+ if (ret < 0 || ret > 59) { /* must be in [00,59] */
+ return NULL;
+ }
+ tm->tm_min = ret;
+ break;
+ case 'n': /* arbitrary whitespace */
+ case 't':
+ while (isspace(*s))
+ s++;
+ break;
+ case 'p': /* am pm */
+ ret = match_string(&s, ampm);
+ if (ret < 0) {
+ return NULL;
+ }
+ if (tm->tm_hour < 0 || tm->tm_hour > 11) { /* %I */
+ return NULL;
+ }
+
+ if (ret == 1) /* pm */
+ tm->tm_hour += 12;
+ break;
+ case 'r': /* equivalent of %I:%M:%S %p */
+ if (!(s = nsd_strptime(s, "%I:%M:%S %p", tm))) {
+ return NULL;
+ }
+ break;
+ case 'R': /* equivalent of %H:%M */
+ if (!(s = nsd_strptime(s, "%H:%M", tm))) {
+ return NULL;
+ }
+ break;
+ case 'S': /* seconds */
+ ret = str2int(&s, 2);
+ /* 60 may occur for leap seconds */
+ /* earlier 61 was also allowed */
+ if (ret < 0 || ret > 60) { /* must be in [00,60] */
+ return NULL;
+ }
+ tm->tm_sec = ret;
+ break;
+ case 'T': /* equivalent of %H:%M:%S */
+ if (!(s = nsd_strptime(s, "%H:%M:%S", tm))) {
+ return NULL;
+ }
+ break;
+ case 'U': /* week number, with the first Sun of Jan being w1 */
+ ret = str2int(&s, 2);
+ if (ret < 0 || ret > 53) { /* must be in [00,53] */
+ return NULL;
+ }
+ /** it is hard (and not necessary for nsd) to determine time
+ * data from week number.
+ **/
+ break;
+ case 'w': /* day of week */
+ ret = str2int(&s, 1);
+ if (ret < 0 || ret > 6) { /* must be in [0,6] */
+ return NULL;
+ }
+ tm->tm_wday = ret;
+ break;
+ case 'W': /* week number, with the first Mon of Jan being w1 */
+ ret = str2int(&s, 2);
+ if (ret < 0 || ret > 53) { /* must be in [00,53] */
+ return NULL;
+ }
+ /** it is hard (and not necessary for nsd) to determine time
+ * data from week number.
+ **/
+ break;
+ case 'x': /* date format */
+ if (!(s = nsd_strptime(s, "%m/%d/%y", tm))) {
+ return NULL;
+ }
+ break;
+ case 'X': /* time format */
+ if (!(s = nsd_strptime(s, "%H:%M:%S", tm))) {
+ return NULL;
+ }
+ break;
+ case 'y': /* last two digits of a year */
+ ret = str2int(&s, 2);
+ if (ret < 0 || ret > 99) { /* must be in [00,99] */
+ return NULL;
+ }
+ if (split_year) {
+ tm->tm_year = ((tm->tm_year/100) * 100) + ret;
+ }
+ else {
+ split_year = 1;
+
+ /** currently:
+ * if in [0,68] we are in 21th century,
+ * if in [69,99] we are in 20th century.
+ **/
+ if (ret < 69) /* 2000 */
+ ret += 100;
+ tm->tm_year = ret;
+ }
+ break;
+ case 'Y': /* year */
+ ret = str2int(&s, 4);
+ if (ret < 0 || ret > 9999) {
+ return NULL;
+ }
+ tm->tm_year = ret - TM_YEAR_BASE;
+ break;
+ case '\0':
+ default: /* unsupported, cannot match format */
+ return NULL;
+ break;
+ }
+ }
+ else { /* literal */
+ /* if input cannot match format, return NULL */
+ if (*s != c)
+ return NULL;
+ s++;
+ }
+
+ format++;
+ }
+
+ /* return pointer to remainder of s */
+ return (char*) s;
+}
+
+#endif /* STRPTIME_WORKS */
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