Constify some input parameters.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>

4 files changed, 18 insertions, 15 deletions

diff --git a/crypto/x509v3/v3_enum.c b/crypto/x509v3/v3_enum.c
index 03daef9947..f39cb5ac2a 100644
--- a/crypto/x509v3/v3_enum.c
+++ b/crypto/x509v3/v3_enum.c
@@ -38,10 +38,12 @@ const X509V3_EXT_METHOD v3_crl_reason = {
     crl_reasons
 };
 
-char *i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *e)
+char *i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *method, 
+                                const ASN1_ENUMERATED *e)
 {
     ENUMERATED_NAMES *enam;
     long strval;
+
     strval = ASN1_ENUMERATED_get(e);
     for (enam = method->usr_data; enam->lname; enam++) {
         if (strval == enam->bitnum)
diff --git a/crypto/x509v3/v3_skey.c b/crypto/x509v3/v3_skey.c
index 4838b9b3fe..39597dc41d 100644
--- a/crypto/x509v3/v3_skey.c
+++ b/crypto/x509v3/v3_skey.c
@@ -24,13 +24,14 @@ const X509V3_EXT_METHOD v3_skey_id = {
     NULL
 };
 
-char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct)
+char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, 
+                            const ASN1_OCTET_STRING *oct)
 {
     return OPENSSL_buf2hexstr(oct->data, oct->length);
 }
 
 ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
-                                         X509V3_CTX *ctx, char *str)
+                                         X509V3_CTX *ctx, const char *str)
 {
     ASN1_OCTET_STRING *oct;
     long length;
diff --git a/crypto/x509v3/v3_utl.c b/crypto/x509v3/v3_utl.c
index 7b18b0166d..2e4d08e02b 100644
--- a/crypto/x509v3/v3_utl.c
+++ b/crypto/x509v3/v3_utl.c
@@ -94,7 +94,7 @@ int X509V3_add_value_bool_nf(const char *name, int asn1_bool,
     return 1;
 }
 
-char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
+char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, const ASN1_ENUMERATED *a)
 {
     BIGNUM *bntmp = NULL;
     char *strtmp = NULL;
@@ -175,7 +175,7 @@ ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, const char *value)
     return aint;
 }
 
-int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
+int X509V3_add_value_int(const char *name, const ASN1_INTEGER *aint,
                          STACK_OF(CONF_VALUE) **extlist)
 {
     char *strtmp;
@@ -190,9 +190,9 @@ int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
     return ret;
 }
 
-int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
+int X509V3_get_value_bool(const CONF_VALUE *value, int *asn1_bool)
 {
-    char *btmp;
+    const char *btmp;
 
     if ((btmp = value->value) == NULL)
         goto err;
@@ -221,7 +221,7 @@ int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
     return 0;
 }
 
-int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
+int X509V3_get_value_int(const CONF_VALUE *value, ASN1_INTEGER **aint)
 {
     ASN1_INTEGER *itmp;
 
diff --git a/include/openssl/x509v3.h b/include/openssl/x509v3.h
index c6960f2c9e..f21ce7c126 100644
--- a/include/openssl/x509v3.h
+++ b/include/openssl/x509v3.h
@@ -501,9 +501,9 @@ int GENERAL_NAME_get0_otherName(GENERAL_NAME *gen,
                                 ASN1_OBJECT **poid, ASN1_TYPE **pvalue);
 
 char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
-                            ASN1_OCTET_STRING *ia5);
+                            const ASN1_OCTET_STRING *ia5);
 ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
-                                         X509V3_CTX *ctx, char *str);
+                                         X509V3_CTX *ctx, const char *str);
 
 DECLARE_ASN1_FUNCTIONS(EXTENDED_KEY_USAGE)
 int i2a_ACCESS_DESCRIPTION(BIO *bp, const ACCESS_DESCRIPTION *a);
@@ -583,8 +583,8 @@ int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
 
 int X509V3_add_value_bool_nf(const char *name, int asn1_bool,
                              STACK_OF(CONF_VALUE) **extlist);
-int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool);
-int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint);
+int X509V3_get_value_bool(const CONF_VALUE *value, int *asn1_bool);
+int X509V3_get_value_int(const CONF_VALUE *value, ASN1_INTEGER **aint);
 void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf);
 void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash);
 # endif
@@ -602,13 +602,13 @@ int X509V3_add_value_uchar(const char *name, const unsigned char *value,
                            STACK_OF(CONF_VALUE) **extlist);
 int X509V3_add_value_bool(const char *name, int asn1_bool,
                           STACK_OF(CONF_VALUE) **extlist);
-int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
+int X509V3_add_value_int(const char *name, const ASN1_INTEGER *aint,
                          STACK_OF(CONF_VALUE) **extlist);
 char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *meth, const ASN1_INTEGER *aint);
 ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *meth, const char *value);
-char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *meth, ASN1_ENUMERATED *aint);
+char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *meth, const ASN1_ENUMERATED *aint);
 char *i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *meth,
-                                ASN1_ENUMERATED *aint);
+                                const ASN1_ENUMERATED *aint);
 int X509V3_EXT_add(X509V3_EXT_METHOD *ext);
 int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist);
 int X509V3_EXT_add_alias(int nid_to, int nid_from);