Extend x509.c so it can parse SSL certs issued by my
departmental CA (who I believe to be using openssl).
The issue is that some, but not all, of the name
components in the certificate I was issued are
UTF8String rather than PrintableString.  This patch
adds UTF8String in the obvious way.

Reference: /n/sources/patch/applied/x509-utf8string
Date: Tue Sep 19 06:19:04 CES 2006
Signed-off-by: davide+p9@cs.cmu.edu

--- /sys/src/libsec/port/x509.c	Tue Sep 19 06:18:55 2006
+++ /sys/src/libsec/port/x509.c	Tue Sep 19 06:18:53 2006
@@ -40,6 +40,7 @@
 #define REAL 9
 #define ENUMERATED 10
 #define EMBEDDED_PDV 11
+#define UTF8String 12
 #define SEQUENCE 16		/* also SEQUENCE OF */
 #define SETOF 17				/* also SETOF OF */
 #define NumericString 18
@@ -516,7 +517,7 @@
 			pval->u.setval = vl;
 		}
 		break;
-
+	case UTF8String:
 	case NumericString:
 	case PrintableString:
 	case TeletexString:
@@ -1018,6 +1019,7 @@
 		}
 		break;
 
+	case UTF8String:
 	case NumericString:
 	case PrintableString:
 	case TeletexString:
@@ -1248,6 +1250,7 @@
 {
 	if(pe->tag.class == Universal) {
 		switch(pe->tag.num) {
+		case UTF8String:
 		case NumericString:
 		case PrintableString:
 		case TeletexString:
@@ -2450,6 +2453,7 @@
 	case EMBEDDED_PDV: return "EMBEDDED PDV";
 	case SEQUENCE: return "SEQUENCE";
 	case SETOF: return "SETOF";
+	case UTF8String: return "UTF8String";
 	case NumericString: return "NumericString";
 	case PrintableString: return "PrintableString";
 	case TeletexString: return "TeletexString";