Convert PKCS8* functions to use const getters

Reviewed-by: NViktor Dukhovni <viktor@openssl.org>
Reviewed-by: NStephen Henson <steve@openssl.org>

apps/pkcs12.c

@@ -37,7 +37,7 @@ int dump_certs_pkeys_bags(BIO *out, STACK_OF(PKCS12_SAFEBAG) *bags,
 int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bags, char *pass,
                          int passlen, int options, char *pempass,
                          const EVP_CIPHER *enc);
-int print_attribs(BIO *out, STACK_OF(X509_ATTRIBUTE) *attrlst,
+int print_attribs(BIO *out, const STACK_OF(X509_ATTRIBUTE) *attrlst,
                   const char *name);
 void hex_prin(BIO *out, unsigned char *buf, int len);
 static int alg_print(X509_ALGOR *alg);
@@ -827,7 +827,7 @@ int cert_load(BIO *in, STACK_OF(X509) *sk)
 
 /* Generalised attribute print: handle PKCS#8 and bag attributes */
 
-int print_attribs(BIO *out, STACK_OF(X509_ATTRIBUTE) *attrlst,
+int print_attribs(BIO *out, const STACK_OF(X509_ATTRIBUTE) *attrlst,
                   const char *name)
 {
     X509_ATTRIBUTE *attr;

crypto/asn1/p8_pkey.c

@@ -65,7 +65,8 @@ int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg,
     return 1;
 }
 
-STACK_OF(X509_ATTRIBUTE) *PKCS8_pkey_get0_attrs(PKCS8_PRIV_KEY_INFO *p8)
+const STACK_OF(X509_ATTRIBUTE) *
+PKCS8_pkey_get0_attrs(const PKCS8_PRIV_KEY_INFO *p8)
 {
     return p8->attributes;
 }

crypto/pkcs12/p12_attr.c

@@ -64,7 +64,8 @@ int PKCS12_add_CSPName_asc(PKCS12_SAFEBAG *bag, const char *name, int namelen)
         return 0;
 }
 
-ASN1_TYPE *PKCS12_get_attr_gen(STACK_OF(X509_ATTRIBUTE) *attrs, int attr_nid)
+ASN1_TYPE *PKCS12_get_attr_gen(const STACK_OF(X509_ATTRIBUTE) *attrs,
+                               int attr_nid)
 {
     X509_ATTRIBUTE *attrib;
     int i;

include/openssl/pkcs12.h

@@ -141,7 +141,8 @@ int PKCS12_add_CSPName_asc(PKCS12_SAFEBAG *bag, const char *name,
 int PKCS12_add_friendlyname_uni(PKCS12_SAFEBAG *bag,
                                 const unsigned char *name, int namelen);
 int PKCS8_add_keyusage(PKCS8_PRIV_KEY_INFO *p8, int usage);
-ASN1_TYPE *PKCS12_get_attr_gen(STACK_OF(X509_ATTRIBUTE) *attrs, int attr_nid);
+ASN1_TYPE *PKCS12_get_attr_gen(const STACK_OF(X509_ATTRIBUTE) *attrs,
+                               int attr_nid);
 char *PKCS12_get_friendlyname(PKCS12_SAFEBAG *bag);
 STACK_OF(X509_ATTRIBUTE) *PKCS12_SAFEBAG_get0_attrs(PKCS12_SAFEBAG *bag);
 unsigned char *PKCS12_pbe_crypt(X509_ALGOR *algor, const char *pass,

include/openssl/x509.h

@@ -971,7 +971,8 @@ int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg,
                     const unsigned char **pk, int *ppklen,
                     X509_ALGOR **pa, PKCS8_PRIV_KEY_INFO *p8);
 
-STACK_OF(X509_ATTRIBUTE) *PKCS8_pkey_get0_attrs(PKCS8_PRIV_KEY_INFO *p8);
+const STACK_OF(X509_ATTRIBUTE) *
+PKCS8_pkey_get0_attrs(const PKCS8_PRIV_KEY_INFO *p8);
 int PKCS8_pkey_add1_attr_by_NID(PKCS8_PRIV_KEY_INFO *p8, int nid, int type,
                                 const unsigned char *bytes, int len);