Adding upstream version 1.8.27.upstream/1.8.27upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 161 insertions, 0 deletions

diff --git a/plugins/sudoers/gentime.c b/plugins/sudoers/gentime.c
new file mode 100644
index 0000000..eea4595
--- /dev/null
+++ b/plugins/sudoers/gentime.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2017 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <ctype.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudoers_debug.h"
+#include "parse.h"
+
+/*
+ * Parse a timestamp in Generalized Time format as per RFC4517.
+ * E.g. yyyymmddHHMMSS.FZ or yyyymmddHHMMSS.F[+-]TZOFF
+ * where minutes, seconds and fraction are optional.
+ * Returns the time in Unix time format or -1 on error.
+ */
+time_t
+parse_gentime(const char *timestr)
+{
+    char tcopy[sizeof("yyyymmddHHMMSS.F")];
+    const char *cp;
+    time_t result;
+    struct tm tm;
+    size_t len;
+    int items, tzoff = 0;
+    bool islocal = false;
+    debug_decl(parse_gentime, SUDOERS_DEBUG_PARSER)
+
+    /* Make a copy of the time without time zone for easy parsing. */
+    len = strspn(timestr, "0123456789.,");
+    if (len >= sizeof(tcopy)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unable to parse general time string %s", timestr);
+	debug_return_time_t(-1);
+    }
+    memcpy(tcopy, timestr, len);
+    tcopy[len] = '\0';
+
+    /* Parse general time, ignoring the timezone for now. */
+    memset(&tm, 0, sizeof(tm));
+    items = sscanf(tcopy, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon,
+	&tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec);
+    if (items == EOF || items < 4) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "only parsed %d items in general time string %s", items, timestr); 
+	debug_return_time_t(-1);
+    }
+    cp = timestr + ((items + 1) * 2);
+
+    /* Parse optional fractional hours/minute/second if present. */
+    if ((cp[0] == '.' || cp[0] == ',') && isdigit((unsigned char)cp[1])) {
+	int frac = cp[1] - '0';
+	switch (items) {
+	case 4:
+	    /* convert fractional hour -> minutes */
+	    tm.tm_min += 60 / 10 * frac;
+	    break;
+	case 5:
+	    /* convert fractional minute -> seconds */
+	    tm.tm_sec += 60 / 10 * frac;
+	    break;
+	case 6:
+	    /* ignore fractional second */
+	    break;
+	}
+	cp += 2;	/* skip over radix and fraction */
+    }
+
+    switch (*cp) {
+    case '-':
+    case '+': {
+	int hour = 0, min = 0;
+
+	/* No DST */
+	tm.tm_isdst = 0;
+	/* parse time zone offset */
+	items = sscanf(cp + 1, "%2d%2d", &hour, &min);
+	if (items == EOF || items < 1) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"unable to parse time zone offset in %s, items %d",
+		timestr, items);
+	    debug_return_time_t(-1);
+	}
+	if (*cp == '-')
+	    tzoff = -((hour * 60) + min) * 60;
+	else
+	    tzoff = ((hour * 60) + min) * 60;
+	cp += 1 + (items * 2);
+	break;
+    }
+    case 'Z':
+	/* GMT/UTC, no DST */
+	tm.tm_isdst = 0;
+	cp++;
+	break;
+    case '\0':
+	/* no zone specified, use local time */
+	tm.tm_isdst = -1;
+	islocal = true;
+	break;
+    default:
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unable to parse general time string %s", timestr);
+	debug_return_time_t(-1);
+    }
+    if (*cp != '\0') {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "trailing garbage in general time string %s", timestr);
+	debug_return_time_t(-1);
+    }
+
+    /* Adjust from Generalized Time to struct tm */
+    tm.tm_year -= 1900;
+    tm.tm_mon--;
+
+    result = mktime(&tm);
+    if (result != -1) {
+	if (!islocal) {
+	    /* Not local time, convert to GMT */
+	    result += get_gmtoff(&result);
+	    /* Adjust time based on supplied GMT offset. */
+	    result -= tzoff;
+	}
+    }
+
+    debug_return_time_t(result);
+}