From: Junio C Hamano <gitster@pobox.com>
Date: Tue, 29 Sep 2009 06:40:09 +0000 (-0700)
Subject: fast-import.c::validate_raw_date(): really validate the value
X-Git-Tag: v1.6.5-rc3~3^2
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=1cd749cc0722533bd1849f491ec9ab19e17232e1;p=git.git

fast-import.c::validate_raw_date(): really validate the value

When reading the "raw format" timestamp from the input stream, make sure
that the timezone offset is a reasonable value by imitating 7122f82
(date.c: improve guess between timezone offset and year., 2006-06-08).

We _might_ want to also check if the timestamp itself is reasonable, but
that is left for a separate commit.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/fast-import.c b/fast-import.c
index 7ef9865aa..6faaaacb6 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -1744,10 +1744,12 @@ static int validate_raw_date(const char *src, char *result, int maxlen)
 {
 	const char *orig_src = src;
 	char *endp;
+	unsigned long num;
 
 	errno = 0;
 
-	strtoul(src, &endp, 10);
+	num = strtoul(src, &endp, 10);
+	/* NEEDSWORK: perhaps check for reasonable values? */
 	if (errno || endp == src || *endp != ' ')
 		return -1;
 
@@ -1755,8 +1757,9 @@ static int validate_raw_date(const char *src, char *result, int maxlen)
 	if (*src != '-' && *src != '+')
 		return -1;
 
-	strtoul(src + 1, &endp, 10);
-	if (errno || endp == src || *endp || (endp - orig_src) >= maxlen)
+	num = strtoul(src + 1, &endp, 10);
+	if (errno || endp == src + 1 || *endp || (endp - orig_src) >= maxlen ||
+	    1400 < num)
 		return -1;
 
 	strcpy(result, orig_src);