Fix print of ASN.1 BIGNUM type.

The ASN.1 BIGNUM type needs to be handled in a custom way as it is
not a generic ASN1_STRING type.

Reviewed-by: Rich Salz <rsalz@openssl.org>

diff --git a/crypto/asn1/x_bignum.c b/crypto/asn1/x_bignum.c
index db6ce82e8ff4ce53ba9762fedfff4d5e35ac090e..da57e77a7aa829f0671c4c03fbb02a39e74a9aee 100644 (file)
--- a/crypto/asn1/x_bignum.c
+++ b/crypto/asn1/x_bignum.c
@@ -31,6 +31,8 @@ static int bn_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
                   int utype, char *free_cont, const ASN1_ITEM *it);
 static int bn_secure_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
                          int utype, char *free_cont, const ASN1_ITEM *it);
+static int bn_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                    int indent, const ASN1_PCTX *pctx);
 
 static ASN1_PRIMITIVE_FUNCS bignum_pf = {
     NULL, 0,
@@ -38,7 +40,8 @@ static ASN1_PRIMITIVE_FUNCS bignum_pf = {
     bn_free,
     0,
     bn_c2i,
-    bn_i2c
+    bn_i2c,
+    bn_print
 };
 
 static ASN1_PRIMITIVE_FUNCS cbignum_pf = {
@@ -47,7 +50,8 @@ static ASN1_PRIMITIVE_FUNCS cbignum_pf = {
     bn_free,
     0,
     bn_secure_c2i,
-    bn_i2c
+    bn_i2c,
+    bn_print
 };
 
 ASN1_ITEM_start(BIGNUM)
@@ -130,3 +134,13 @@ static int bn_secure_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
         bn_secure_new(pval, it);
     return bn_c2i(pval, cont, len, utype, free_cont, it);
 }
+
+static int bn_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                    int indent, const ASN1_PCTX *pctx)
+{
+    if (!BN_print(out, *(BIGNUM **)pval))
+        return 0;
+    if (BIO_puts(out, "\n") <= 0)
+        return 0;
+    return 1;
+}