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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /src/global/conv_time.c
parentInitial commit. (diff)
downloadpostfix-upstream.tar.xz
postfix-upstream.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/global/conv_time.c')
-rw-r--r--src/global/conv_time.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/src/global/conv_time.c b/src/global/conv_time.c
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+/*++
+/* NAME
+/* conv_time 3
+/* SUMMARY
+/* time value conversion
+/* SYNOPSIS
+/* #include <conv_time.h>
+/*
+/* int conv_time(strval, timval, def_unit);
+/* const char *strval;
+/* int *timval;
+/* int def_unit;
+/* DESCRIPTION
+/* conv_time() converts a numerical time value with optional
+/* one-letter suffix that specifies an explicit time unit: s
+/* (seconds), m (minutes), h (hours), d (days) or w (weeks).
+/* Internally, time is represented in seconds.
+/*
+/* Arguments:
+/* .IP strval
+/* Input value.
+/* .IP timval
+/* Result pointer.
+/* .IP def_unit
+/* The default time unit suffix character.
+/* DIAGNOSTICS
+/* The result value is non-zero in case of success, zero in
+/* case of a bad time value or a bad time unit suffix.
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*
+/* Wietse Venema
+/* Google, Inc.
+/* 111 8th Avenue
+/* New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <limits.h> /* INT_MAX */
+#include <stdlib.h>
+#include <errno.h>
+
+/* Utility library. */
+
+#include <msg.h>
+
+/* Global library. */
+
+#include <conv_time.h>
+
+#define MINUTE (60)
+#define HOUR (60 * MINUTE)
+#define DAY (24 * HOUR)
+#define WEEK (7 * DAY)
+
+/* conv_time - convert time value */
+
+int conv_time(const char *strval, int *timval, int def_unit)
+{
+ char *end;
+ int intval;
+ long longval;
+
+ errno = 0;
+ intval = longval = strtol(strval, &end, 10);
+ if (*strval == 0 || errno == ERANGE || longval != intval || intval < 0
+ /* || (*end != 0 && end[1] != 0) */)
+ return (0);
+
+ switch (*end ? *end : def_unit) {
+ case 'w':
+ if (intval < INT_MAX / WEEK) {
+ *timval = intval * WEEK;
+ return (1);
+ } else {
+ return (0);
+ }
+ case 'd':
+ if (intval < INT_MAX / DAY) {
+ *timval = intval * DAY;
+ return (1);
+ } else {
+ return (0);
+ }
+ case 'h':
+ if (intval < INT_MAX / HOUR) {
+ *timval = intval * HOUR;
+ return (1);
+ } else {
+ return (0);
+ }
+ case 'm':
+ if (intval < INT_MAX / MINUTE) {
+ *timval = intval * MINUTE;
+ return (1);
+ } else {
+ return (0);
+ }
+ case 's':
+ *timval = intval;
+ return (1);
+ }
+ return (0);
+}