experimental function to convert ASN1_TIME to tm, not used or even compiled in yet

1 files changed, 63 insertions, 1 deletions

diff --git a/crypto/asn1/a_time.c b/crypto/asn1/a_time.c
index e2eb9b243e..57bc199376 100644
--- a/crypto/asn1/a_time.c
+++ b/crypto/asn1/a_time.c
@@ -125,7 +125,7 @@ ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t,
 	return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
 	}
 
-int ASN1_TIME_check(ASN1_TIME *t)
+int ASN1_TIME_check(const ASN1_TIME *t)
 	{
 	if (t->type == V_ASN1_GENERALIZEDTIME)
 		return ASN1_GENERALIZEDTIME_check(t);
@@ -196,3 +196,65 @@ int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
 
 	return 1;
 	}
+
+#if 0
+static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *s)
+	{
+	const unsigned char *p;
+
+	if (!ASN1_TIME_check(s))
+		return 0;
+
+	memset(tm, 0 ,sizeof tm);
+	p = s->data;
+
+#define g2(p) (((p)[0] - '0') * 10 + ((p)[1] - '0'))
+	if (s->type == V_ASN1_GENERALIZEDTIME)
+		{
+		int yr = g2(p) * 100 + g2(p + 2);
+		if (yr < 1900)
+			return 0;
+		tm->tm_year = yr - 1900;
+		p += 4;
+		}
+	else
+		{
+		tm->tm_year=g2(p);
+		if(tm->tm_year < 50)
+			tm->tm_year+=100;
+		p += 2;
+		}
+	tm->tm_mon=g2(p)-1;
+	tm->tm_mday=g2(p + 2);
+	tm->tm_hour=g2(p + 4);
+	tm->tm_min=g2(p + 6);
+	p += 8;
+	/* Seconds optional in UTCTime */
+	if (s->type == V_ASN1_GENERALIZEDTIME || (*p >= '0' && *p <= '9'))
+		{
+		tm->tm_sec=g2(p);
+		p += 2;
+		}
+	else
+		tm->tm_sec = 0;
+	if (s->type == V_ASN1_GENERALIZEDTIME)
+		{
+		/* Skip any fractional seconds */
+		if (*p == '.')
+			{
+			p++;
+			while (*p >= '0' && *p <= '9')
+				p++;
+			}
+		}
+	/* Timezone */
+	if(*p != 'Z')
+		{
+		int off_sec = g2(p + 1) * 3600 + g2(p + 3) * 60;
+		if(*p == '-')
+			off_sec = -off_sec;
+		OPENSSL_gmtime_adj(tm, 0, off_sec);
+		}
+	return 1;
+	}
+#endif