avoid potential spurious BN_free()

[openssl.git] / crypto / pem / pem.h

diff --git a/crypto/pem/pem.h b/crypto/pem/pem.h
index 780a34d6d79da3b13fb111e9c09c2bc2fbe0a328..7db6b423d06bf76ecd045370a52d08e641138321 100644 (file)
--- a/crypto/pem/pem.h
+++ b/crypto/pem/pem.h
@@ -220,19 +220,19 @@ typedef struct pem_ctx_st
 #define IMPLEMENT_PEM_read_fp(name, type, str, asn1) \
 type *PEM_read_##name(FILE *fp, type **x, pem_password_cb *cb, void *u)\
 { \
-return(((type *(*)(D2I_OF(type),char *,FILE *,type **,pem_password_cb *,void *))PEM_ASN1_read)(d2i_##asn1, str,fp,x,cb,u)); \
+return(((type *(*)(D2I_OF(type),char *,FILE *,type **,pem_password_cb *,void *))openssl_fcast(PEM_ASN1_read))(d2i_##asn1, str,fp,x,cb,u)); \
 } \
 
 #define IMPLEMENT_PEM_write_fp(name, type, str, asn1) \
 int PEM_write_##name(FILE *fp, type *x) \
 { \
-return(((int (*)(I2D_OF(type),const char *,FILE *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))PEM_ASN1_write)(i2d_##asn1,str,fp,x,NULL,NULL,0,NULL,NULL)); \
+return(((int (*)(I2D_OF(type),const char *,FILE *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write))(i2d_##asn1,str,fp,x,NULL,NULL,0,NULL,NULL)); \
 }
 
 #define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) \
-int PEM_write_##name(FILE *fp, type *x) \
+int PEM_write_##name(FILE *fp, const type *x) \
 { \
-return(((int (*)(I2D_OF_const(type),const char *,FILE *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))PEM_ASN1_write)(i2d_##asn1,str,fp,x,NULL,NULL,0,NULL,NULL)); \
+return(((int (*)(I2D_OF_const(type),const char *,FILE *, const type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write))(i2d_##asn1,str,fp,x,NULL,NULL,0,NULL,NULL)); \
 }
 
 #define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) \
@@ -240,7 +240,7 @@ int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
             unsigned char *kstr, int klen, pem_password_cb *cb, \
                  void *u) \
        { \
-       return(((int (*)(I2D_OF(type),const char *,FILE *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))PEM_ASN1_write)(i2d_##asn1,str,fp,x,enc,kstr,klen,cb,u)); \
+       return(((int (*)(I2D_OF(type),const char *,FILE *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write))(i2d_##asn1,str,fp,x,enc,kstr,klen,cb,u)); \
        }
 
 #define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) \
@@ -248,7 +248,7 @@ int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
             unsigned char *kstr, int klen, pem_password_cb *cb, \
                  void *u) \
        { \
-       return(((int (*)(I2D_OF_const(type),const char *,FILE *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))PEM_ASN1_write)(i2d_##asn1,str,fp,x,enc,kstr,klen,cb,u)); \
+       return(((int (*)(I2D_OF_const(type),const char *,FILE *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write))(i2d_##asn1,str,fp,x,enc,kstr,klen,cb,u)); \
        }
 
 #endif
@@ -256,33 +256,33 @@ int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
 #define IMPLEMENT_PEM_read_bio(name, type, str, asn1) \
 type *PEM_read_bio_##name(BIO *bp, type **x, pem_password_cb *cb, void *u)\
 { \
-return(((type *(*)(D2I_OF(type),const char *,BIO *,type **,pem_password_cb *,void *))PEM_ASN1_read_bio)(d2i_##asn1, str,bp,x,cb,u)); \
+return(((type *(*)(D2I_OF(type),const char *,BIO *,type **,pem_password_cb *,void *))openssl_fcast(PEM_ASN1_read_bio))(d2i_##asn1, str,bp,x,cb,u)); \
 }
 
 #define IMPLEMENT_PEM_write_bio(name, type, str, asn1) \
 int PEM_write_bio_##name(BIO *bp, type *x) \
 { \
-return(((int (*)(I2D_OF(type),const char *,BIO *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))PEM_ASN1_write_bio)(i2d_##asn1,str,bp,x,NULL,NULL,0,NULL,NULL)); \
+return(((int (*)(I2D_OF(type),const char *,BIO *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write_bio))(i2d_##asn1,str,bp,x,NULL,NULL,0,NULL,NULL)); \
 }
 
 #define IMPLEMENT_PEM_write_bio_const(name, type, str, asn1) \
-int PEM_write_bio_##name(BIO *bp, type *x) \
+int PEM_write_bio_##name(BIO *bp, const type *x) \
 { \
-return(((int (*)(I2D_OF_const(type),const char *,BIO *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))PEM_ASN1_write_bio)(i2d_##asn1,str,bp,x,NULL,NULL,0,NULL,NULL)); \
+return(((int (*)(I2D_OF_const(type),const char *,BIO *,const type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write_bio))(i2d_##asn1,str,bp,x,NULL,NULL,0,NULL,NULL)); \
 }
 
 #define IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1) \
 int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
             unsigned char *kstr, int klen, pem_password_cb *cb, void *u) \
        { \
-       return(((int (*)(I2D_OF(type),const char *,BIO *,type *,const EVP_CIPHER *,unsigned char *,int,pem_password_cb *,void *))PEM_ASN1_write_bio)(i2d_##asn1,str,bp,x,enc,kstr,klen,cb,u)); \
+       return(((int (*)(I2D_OF(type),const char *,BIO *,type *,const EVP_CIPHER *,unsigned char *,int,pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write_bio))(i2d_##asn1,str,bp,x,enc,kstr,klen,cb,u)); \
        }
 
 #define IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1) \
 int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
             unsigned char *kstr, int klen, pem_password_cb *cb, void *u) \
        { \
-       return(((int (*)(I2D_OF_const(type),const char *,BIO *,type *,const EVP_CIPHER *,unsigned char *,int,pem_password_cb *,void *))PEM_ASN1_write_bio)(i2d_##asn1,str,bp,x,enc,kstr,klen,cb,u)); \
+       return(((int (*)(I2D_OF_const(type),const char *,BIO *,type *,const EVP_CIPHER *,unsigned char *,int,pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write_bio))(i2d_##asn1,str,bp,x,enc,kstr,klen,cb,u)); \
        }
 
 #define IMPLEMENT_PEM_write(name, type, str, asn1) \
@@ -333,6 +333,9 @@ int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
 #define DECLARE_PEM_write_fp(name, type) \
        int PEM_write_##name(FILE *fp, type *x);
 
+#define DECLARE_PEM_write_fp_const(name, type) \
+       int PEM_write_##name(FILE *fp, const type *x);
+
 #define DECLARE_PEM_write_cb_fp(name, type) \
        int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
             unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
@@ -346,6 +349,9 @@ int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
 #define DECLARE_PEM_write_bio(name, type) \
        int PEM_write_bio_##name(BIO *bp, type *x);
 
+#define DECLARE_PEM_write_bio_const(name, type) \
+       int PEM_write_bio_##name(BIO *bp, const type *x);
+
 #define DECLARE_PEM_write_cb_bio(name, type) \
        int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
             unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
@@ -362,6 +368,10 @@ int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
        DECLARE_PEM_write_bio(name, type) \
        DECLARE_PEM_write_fp(name, type) 
 
+#define DECLARE_PEM_write_const(name, type) \
+       DECLARE_PEM_write_bio_const(name, type) \
+       DECLARE_PEM_write_fp_const(name, type)
+
 #define DECLARE_PEM_write_cb(name, type) \
        DECLARE_PEM_write_cb_bio(name, type) \
        DECLARE_PEM_write_cb_fp(name, type) 
@@ -374,6 +384,10 @@ int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
        DECLARE_PEM_read(name, type) \
        DECLARE_PEM_write(name, type)
 
+#define DECLARE_PEM_rw_const(name, type) \
+       DECLARE_PEM_read(name, type) \
+       DECLARE_PEM_write_const(name, type)
+
 #define DECLARE_PEM_rw_cb(name, type) \
        DECLARE_PEM_read(name, type) \
        DECLARE_PEM_write_cb(name, type)
@@ -532,12 +546,12 @@ int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char
 void * PEM_ASN1_read_bio(d2i_of_void *d2i, const char *name, BIO *bp,
                          void **x, pem_password_cb *cb, void *u);
 #define PEM_ASN1_read_bio_of(type,d2i,name,bp,x,cb,u) \
-((type *(*)(D2I_OF(type),const char *,BIO *,type **,pem_password_cb *,void *))PEM_ASN1_read_bio)(d2i,name,bp,x,cb,u)
+((type *(*)(D2I_OF(type),const char *,BIO *,type **,pem_password_cb *,void *))openssl_fcast(PEM_ASN1_read_bio))(d2i,name,bp,x,cb,u)
 int    PEM_ASN1_write_bio(i2d_of_void *i2d,const char *name,BIO *bp,char *x,
                           const EVP_CIPHER *enc,unsigned char *kstr,int klen,
                           pem_password_cb *cb, void *u);
 #define PEM_ASN1_write_bio_of(type,i2d,name,bp,x,enc,kstr,klen,cb,u) \
-       ((int (*)(I2D_OF(type),const char *,BIO *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))PEM_ASN1_write_bio)(i2d,name,bp,x,enc,kstr,klen,cb,u)
+       ((int (*)(I2D_OF(type),const char *,BIO *,type *, const EVP_CIPHER *,unsigned char *,int, pem_password_cb *,void *))openssl_fcast(PEM_ASN1_write_bio))(i2d,name,bp,x,enc,kstr,klen,cb,u)
 
 STACK_OF(X509_INFO) *  PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
 int    PEM_X509_INFO_write_bio(BIO *bp,X509_INFO *xi, EVP_CIPHER *enc,
@@ -601,7 +615,7 @@ DECLARE_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
 
 DECLARE_PEM_rw_cb(RSAPrivateKey, RSA)
 
-DECLARE_PEM_rw(RSAPublicKey, RSA)
+DECLARE_PEM_rw_const(RSAPublicKey, RSA)
 DECLARE_PEM_rw(RSA_PUBKEY, RSA)
 
 #endif
@@ -612,19 +626,19 @@ DECLARE_PEM_rw_cb(DSAPrivateKey, DSA)
 
 DECLARE_PEM_rw(DSA_PUBKEY, DSA)
 
-DECLARE_PEM_rw(DSAparams, DSA)
+DECLARE_PEM_rw_const(DSAparams, DSA)
 
 #endif
 
 #ifndef OPENSSL_NO_EC
-DECLARE_PEM_rw(ECPKParameters, EC_GROUP)
+DECLARE_PEM_rw_const(ECPKParameters, EC_GROUP)
 DECLARE_PEM_rw_cb(ECPrivateKey, EC_KEY)
 DECLARE_PEM_rw(EC_PUBKEY, EC_KEY)
 #endif
 
 #ifndef OPENSSL_NO_DH
 
-DECLARE_PEM_rw(DHparams, DH)
+DECLARE_PEM_rw_const(DHparams, DH)
 
 #endif