From: Michihiro NAKAJIMA <ggcueroad@gmail.com>
Date: Thu, 19 Jan 2012 07:31:31 +0000 (-0500)
Subject: If the format of times in ISO images is invalid, reset the time to 0.
X-Git-Tag: v3.0.4~2^2~171
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8007f5ddfa4b9604402e22c47e17b331ce153ab7;p=thirdparty%2Flibarchive.git

If the format of times in ISO images is invalid, reset the time to 0.

SVN-Revision: 4180
---

diff --git a/libarchive/archive_read_support_format_iso9660.c b/libarchive/archive_read_support_format_iso9660.c
index 0f0c3d66f..942dfe253 100644
--- a/libarchive/archive_read_support_format_iso9660.c
+++ b/libarchive/archive_read_support_format_iso9660.c
@@ -3085,6 +3085,8 @@ isodate7(const unsigned char *v)
 {
 	struct tm tm;
 	int offset;
+	time_t t;
+
 	memset(&tm, 0, sizeof(tm));
 	tm.tm_year = v[0];
 	tm.tm_mon = v[1] - 1;
@@ -3098,7 +3100,10 @@ isodate7(const unsigned char *v)
 		tm.tm_hour -= offset / 4;
 		tm.tm_min -= (offset % 4) * 15;
 	}
-	return (time_from_tm(&tm));
+	t = time_from_tm(&tm);
+	if (t == (time_t)-1)
+		return ((time_t)0);
+	return (t);
 }
 
 static time_t
@@ -3106,6 +3111,8 @@ isodate17(const unsigned char *v)
 {
 	struct tm tm;
 	int offset;
+	time_t t;
+
 	memset(&tm, 0, sizeof(tm));
 	tm.tm_year = (v[0] - '0') * 1000 + (v[1] - '0') * 100
 	    + (v[2] - '0') * 10 + (v[3] - '0')
@@ -3121,7 +3128,10 @@ isodate17(const unsigned char *v)
 		tm.tm_hour -= offset / 4;
 		tm.tm_min -= (offset % 4) * 15;
 	}
-	return (time_from_tm(&tm));
+	t = time_from_tm(&tm);
+	if (t == (time_t)-1)
+		return ((time_t)0);
+	return (t);
 }
 
 static time_t
@@ -3135,7 +3145,8 @@ time_from_tm(struct tm *t)
 #else
 	/* Else use direct calculation using POSIX assumptions. */
 	/* First, fix up tm_yday based on the year/month/day. */
-	mktime(t);
+	if (mktime(t) == (time_t)-1)
+		return ((time_t)-1);
 	/* Then we can compute timegm() from first principles. */
 	return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600
 	    + t->tm_yday * 86400 + (t->tm_year - 70) * 31536000