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ref: b96dc1adf9a3d44bce0a668b8b14d647d6dc302e
parent: b01707c3208f0ca310afe5509010351254f602f5
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Fri Oct 9 14:52:32 EDT 2015 

libsec: clarify the code by declaring constant for DirectoryString and handle conversion in mkstring()


--- a/sys/src/libsec/port/x509.c
+++ b/sys/src/libsec/port/x509.c
@@ -2357,11 +2357,31 @@
 	return e;
 }
 
+static int
+printable(char *s)
+{
+	int c;
+
+	while((c = (uchar)*s++) != 0){
+		if((c >= 'a' && c <= 'z')
+		|| (c >= 'A' && c <= 'Z')
+		|| (c >= '0' && c <= '9')
+		|| strchr("'=()+,-./:? ", c) != nil)
+			continue;
+		return 0;
+	}
+	return 1;
+}
+
+#define DirectoryString 0
+
 static Elem
 mkstring(char *s, int t)
 {
 	Elem e;
 
+	if(t == DirectoryString)
+		t = printable(s) ? PrintableString : UTF8String;
 	e.tag.class = Universal;
 	e.tag.num = t;
 	e.val.tag = VString;
@@ -2451,22 +2471,6 @@
 	return mkseq(mkel(mkoid(alg_oid_tab[alg]), mkel(Null(), nil)));
 }
 
-static int
-printable(char *s)
-{
-	int c;
-
-	while((c = (uchar)*s++) != 0){
-		if((c >= 'a' && c <= 'z')
-		|| (c >= 'A' && c <= 'Z')
-		|| (c >= '0' && c <= '9')
-		|| strchr("'=()+,-./:? ", c) != nil)
-			continue;
-		return 0;
-	}
-	return 1;
-}
-
 typedef struct Ints7pref {
 	int	len;
 	int	data[7];
@@ -2475,11 +2479,11 @@
 } Ints7pref;
 Ints7pref DN_oid[] = {
 	{4, 2, 5, 4, 6, 0, 0, 0,        "C=", PrintableString},
-	{4, 2, 5, 4, 8, 0, 0, 0,        "ST=" },
-	{4, 2, 5, 4, 7, 0, 0, 0,        "L="  },
-	{4, 2, 5, 4, 10, 0, 0, 0,       "O="  },
-	{4, 2, 5, 4, 11, 0, 0, 0,       "OU=" },
-	{4, 2, 5, 4, 3, 0, 0, 0,        "CN=" },
+	{4, 2, 5, 4, 8, 0, 0, 0,        "ST=",DirectoryString},
+	{4, 2, 5, 4, 7, 0, 0, 0,        "L=", DirectoryString},
+	{4, 2, 5, 4, 10, 0, 0, 0,       "O=", DirectoryString},
+	{4, 2, 5, 4, 11, 0, 0, 0,       "OU=",DirectoryString},
+	{4, 2, 5, 4, 3, 0, 0, 0,        "CN=",DirectoryString},
 	{7, 1,2,840,113549,1,9,1,       "E=", IA5String},
 	{7, 0,9,2342,19200300,100,1,25,	"DC=",IA5String},
 };
@@ -2487,8 +2491,7 @@
 static Elem
 mkname(Ints7pref *oid, char *subj)
 {
-	int stype = oid->stype ? oid->stype : (printable(subj) ? PrintableString : UTF8String);
-	return mkset(mkel(mkseq(mkel(mkoid((Ints*)oid), mkel(mkstring(subj, stype), nil))), nil));
+	return mkset(mkel(mkseq(mkel(mkoid((Ints*)oid), mkel(mkstring(subj, oid->stype), nil))), nil));
 }
 
 static Elem
-- 
⑨