summaryrefslogtreecommitdiffabout
path: root/tests/readtime.c
Side-by-side diff
Diffstat (limited to 'tests/readtime.c') (more/less context) (ignore whitespace changes)
-rw-r--r--tests/readtime.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/tests/readtime.c b/tests/readtime.c
new file mode 100644
index 0000000..f7cc36a
--- a/dev/null
+++ b/tests/readtime.c
@@ -0,0 +1,161 @@
+/* This file is part of GNU Pies testsuite.
+ Copyright (C) 2019 Sergey Poznyakoff
+
+ GNU Pies 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 3, or (at your option)
+ any later version.
+
+ GNU Pies 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 GNU Pies. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <locale.h>
+#include <libpies.h>
+
+char *progname;
+int precision = 2;
+
+void
+usage (FILE *fp, int status)
+{
+ fprintf (fp, "usage: %s [-v] [-p PREC] URL\n", progname);
+ fprintf (fp, "Reads time stamp from URL as per RFC868.\n");
+ fprintf (fp, "Exits with status 0 if it is within PREC seconds from the current time.\n");
+ fprintf (fp, "Default PREC is %d seconds.\n", precision);
+ exit (status);
+}
+
+enum { SEVENTY_YEARS = (unsigned long)25567 * 24 * 60 * 60 };
+
+int
+main (int argc, char **argv)
+{
+ int c, fd;
+ struct pies_url *url;
+ time_t now;
+ int human_time = 0;
+ union
+ {
+ char s[80];
+ uint32_t u;
+ } buf;
+ uint32_t t, d;
+ ssize_t n;
+ int verbose = 0;
+
+ progname = argv[0];
+ setlocale (LC_ALL, "C");
+
+ while ((c = getopt (argc, argv, "Hhvp:")) != EOF)
+ {
+ switch (c)
+ {
+ case 'H':
+ human_time = 1;
+ break;
+
+ case 'h':
+ usage (stdout, 0);
+ break;
+
+ case 'p':
+ precision = atoi (optarg);
+ if (precision <= 0)
+ {
+ fprintf (stderr, "%s: bad precision\n", progname);
+ exit (1);
+ }
+ break;
+
+ case 'v':
+ verbose++;
+ break;
+
+ default:
+ exit (64);
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc != 1)
+ usage (stderr, 64);
+
+ if (pies_url_create (&url, argv[0]))
+ {
+ perror (argv[0]);
+ return 64;
+ }
+
+ fd = url_connect (url, NULL);
+ time (&now);
+ n = read (fd, &buf, sizeof (buf));
+ if (n == -1)
+ {
+ perror ("read");
+ exit (1);
+ }
+
+ if (human_time)
+ {
+ struct tm daytime;
+ char *p;
+
+ if (buf.s[n-1] == '\n')
+ {
+ buf.s[--n] = 0;
+ if (buf.s[n-1] == '\r')
+ buf.s[--n] = 0;
+ }
+ if (verbose > 1)
+ printf ("got %*.*s\n", (int)n, (int)n, buf.s);
+ p = strptime (buf.s, "%a %b %d %H:%M:%S %Y", &daytime);
+ if (!p)
+ {
+ fprintf (stderr, "%s: unable to parse time '%s'\n", progname, buf.s);
+ exit (1);
+ }
+ if (*p)
+ {
+ fprintf (stderr, "%s: trailing garbage: '%s'\n", progname, p);
+ }
+ t = mktime (&daytime);
+ }
+ else
+ {
+ if (n < sizeof (buf.u))
+ {
+ fprintf (stderr, "%s: read %d bytes\n", progname, (int)n);
+ exit (1);
+ }
+ t = ntohl (buf.u);
+ if (verbose > 1)
+ printf ("got %lu\n", (unsigned long) t);
+ t -= SEVENTY_YEARS;
+ }
+
+ if (t > now)
+ d = t - now;
+ else
+ d = now - t;
+
+ if (d > precision)
+ {
+ fprintf (stderr, "%s: time diff %lu\n", progname, (unsigned long) d);
+ exit (1);
+ }
+ else if (verbose)
+ printf ("OK\n");
+ return 0;
+}

Return to:

Send suggestions and report system problems to the System administrator.