diff options
Diffstat (limited to 'StdLib/BsdSocketLib/ns_ttl.c')
| -rw-r--r-- | StdLib/BsdSocketLib/ns_ttl.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/StdLib/BsdSocketLib/ns_ttl.c b/StdLib/BsdSocketLib/ns_ttl.c new file mode 100644 index 0000000000..a5a57449eb --- /dev/null +++ b/StdLib/BsdSocketLib/ns_ttl.c @@ -0,0 +1,191 @@ +/*
+ * Copyright (c) 1996 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+/*
+ * Portions copyright (c) 1999, 2000
+ * Intel Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ *
+ * This product includes software developed by Intel Corporation and
+ * its contributors.
+ *
+ * 4. Neither the name of Intel Corporation or its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION 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 INTEL CORPORATION 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.
+ *
+ */
+
+#ifndef lint
+static char rcsid[] = "$Id: ns_ttl.c,v 1.1.1.1 2003/11/19 01:51:34 kyu3 Exp $";
+#endif
+
+/* Import. */
+
+#include <arpa/nameser.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#define SPRINTF(x) ((size_t)sprintf x)
+
+/* Forward. */
+
+static int fmt1(int t, char s, char **buf, size_t *buflen);
+
+/* Macros. */
+
+#define T(x) if ((x) < 0) return (-1); else (void)NULL
+
+/* Public. */
+
+int
+ns_format_ttl(u_long src, char *dst, size_t dstlen) {
+ char *odst = dst;
+ int secs, mins, hours, days, weeks, x;
+ char *p;
+
+ secs = (int)(src % 60); src /= 60;
+ mins = (int)(src % 60); src /= 60;
+ hours = (int)(src % 24); src /= 24;
+ days = (int)(src % 7); src /= 7;
+ weeks = (int)src; src = 0;
+
+ x = 0;
+ if (weeks) {
+ T(fmt1(weeks, 'W', &dst, &dstlen));
+ x++;
+ }
+ if (days) {
+ T(fmt1(days, 'D', &dst, &dstlen));
+ x++;
+ }
+ if (hours) {
+ T(fmt1(hours, 'H', &dst, &dstlen));
+ x++;
+ }
+ if (mins) {
+ T(fmt1(mins, 'M', &dst, &dstlen));
+ x++;
+ }
+ if (secs || !(weeks || days || hours || mins)) {
+ T(fmt1(secs, 'S', &dst, &dstlen));
+ x++;
+ }
+
+ if (x > 1) {
+ int ch;
+
+ for (p = odst; (ch = *p) != '\0'; p++)
+ if (isascii(ch) && isupper(ch))
+ *p = (char)( tolower(ch));
+ }
+
+ return ((int)(dst - odst));
+}
+
+int
+ns_parse_ttl(const char *src, u_long *dst) {
+ u_long ttl, tmp;
+ int ch, digits, dirty;
+
+ ttl = 0;
+ tmp = 0;
+ digits = 0;
+ dirty = 0;
+ while ((ch = *src++) != '\0') {
+ if (!isascii(ch) || !isprint(ch))
+ goto einval;
+ if (isdigit(ch)) {
+ tmp *= 10;
+ tmp += (ch - '0');
+ digits++;
+ continue;
+ }
+ if (digits == 0)
+ goto einval;
+ if (islower(ch))
+ ch = toupper(ch);
+ switch (ch) {
+ case 'W': tmp *= 7;
+ case 'D': tmp *= 24;
+ case 'H': tmp *= 60;
+ case 'M': tmp *= 60;
+ case 'S': break;
+ default: goto einval;
+ }
+ ttl += tmp;
+ tmp = 0;
+ digits = 0;
+ dirty = 1;
+ }
+ if (digits > 0) {
+ if (dirty)
+ goto einval;
+ else
+ ttl += tmp;
+ }
+ *dst = ttl;
+ return (0);
+
+ einval:
+ errno = EINVAL;
+ return (-1);
+}
+
+/* Private. */
+
+static int
+fmt1(int t, char s, char **buf, size_t *buflen) {
+ char tmp[50];
+ size_t len;
+
+ len = SPRINTF((tmp, "%d%c", t, s));
+ if (len + 1 > *buflen)
+ return (-1);
+ strcpy(*buf, tmp);
+ *buf += len;
+ *buflen -= len;
+ return (0);
+}
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