/* crypto/pem/pem_info.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young ([email protected]).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson ([email protected]).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young ([email protected])"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson ([email protected])"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif
#ifndef OPENSSL_NO_FP_API
STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u)
{
BIO *b;
STACK_OF(X509_INFO) *ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
PEMerr(PEM_F_PEM_X509_INFO_READ,ERR_R_BUF_LIB);
return(0);
}
BIO_set_fp(b,fp,BIO_NOCLOSE);
ret=PEM_X509_INFO_read_bio(b,sk,cb,u);
BIO_free(b);
return(ret);
}
#endif
STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u)
{
X509_INFO *xi=NULL;
char *name=NULL,*header=NULL;
void *pp;
unsigned char *data=NULL;
const unsigned char *p;
long len,error=0;
int ok=0;
STACK_OF(X509_INFO) *ret=NULL;
unsigned int i,raw;
d2i_of_void *d2i;
if (sk == NULL)
{
if ((ret=sk_X509_INFO_new_null()) == NULL)
{
PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_MALLOC_FAILURE);
goto err;
}
}
else
ret=sk;
if ((xi=X509_INFO_new()) == NULL) goto err;
for (;;)
{
raw=0;
i=PEM_read_bio(bp,&name,&header,&data,&len);
if (i == 0)
{
error=ERR_GET_REASON(ERR_peek_last_error());
if (error == PEM_R_NO_START_LINE)
{
ERR_clear_error();
break;
}
goto err;
}
start:
if ( (strcmp(name,PEM_STRING_X509) == 0) ||
(strcmp(name,PEM_STRING_X509_OLD) == 0))
{
d2i=(D2I_OF(void))d2i_X509;
if (xi->x509 != NULL)
{
if (!sk_X509_INFO_push(ret,xi)) goto err;
if ((xi=X509_INFO_new()) == NULL) goto err;
goto start;
}
pp=&(xi->x509);
}
else if ((strcmp(name,PEM_STRING_X509_TRUSTED) == 0))
{
d2i=(D2I_OF(void))d2i_X509_AUX;
if (xi->x509 != NULL)
{
if (!sk_X509_INFO_push(ret,xi)) goto err;
if ((xi=X509_INFO_new()) == NULL) goto err;
goto start;
}
pp=&(xi->x509);
}
else if (strcmp(name,PEM_STRING_X509_CRL) == 0)
{
d2i=(D2I_OF(void))d2i_X509_CRL;
if (xi->crl != NULL)
{
if (!sk_X509_INFO_push(ret,xi)) goto err;
if ((xi=X509_INFO_new()) == NULL) goto err;
goto start;
}
pp=&(xi->crl);
}
else
#ifndef OPENSSL_NO_RSA
if (strcmp(name,PEM_STRING_RSA) == 0)
{
d2i=(D2I_OF(void))d2i_RSAPrivateKey;
if (xi->x_pkey != NULL)
{
if (!sk_X509_INFO_push(ret,xi)) goto err;
if ((xi=X509_INFO_new()) == NULL) goto err;
goto start;
}
xi->enc_data=NULL;
xi->enc_len=0;
xi->x_pkey=X509_PKEY_new();
if ((xi->x_pkey->dec_pkey=EVP_PKEY_new()) == NULL)
goto err;
xi->x_pkey->dec_pkey->type=EVP_PKEY_RSA;
pp=&(xi->x_pkey->dec_pkey->pkey.rsa);
if ((int)strlen(header) > 10) /* assume encrypted */
raw=1;
}
else
#endif
#ifndef OPENSSL_NO_DSA
if (strcmp(name,PEM_STRING_DSA) == 0)
{
d2i=(D2I_OF(void))d2i_DSAPrivateKey;
if (xi->x_pkey != NULL)
{
if (!sk_X509_INFO_push(ret,xi)) goto err;
if ((xi=X509_INFO_new()) == NULL) goto err;
goto start;
}
xi->enc_data=NULL;
xi->enc_len=0;
xi->x_pkey=X509_PKEY_new();
if ((xi->x_pkey->dec_pkey=EVP_PKEY_new()) == NULL)
goto err;
xi->x_pkey->dec_pkey->type=EVP_PKEY_DSA;
pp=(char **)&(xi->x_pkey->dec_pkey->pkey.dsa);
if ((int)strlen(header) > 10) /* assume encrypted */
raw=1;
}
else
#endif
#ifndef OPENSSL_NO_EC
if (strcmp(name,PEM_STRING_ECPRIVATEKEY) == 0)
{
d2i=(D2I_OF(void))d2i_ECPrivateKey;
if (xi->x_pkey != NULL)
{
if (!sk_X509_INFO_push(ret,xi)) goto err;
if ((xi=X509_INFO_new()) == NULL) goto err;
goto start;
}
xi->enc_data=NULL;
xi->enc_len=0;
xi->x_pkey=X509_PKEY_new();
if ((xi->x_pkey->dec_pkey=EVP_PKEY_new()) == NULL)
goto err;
xi->x_pkey->dec_pkey->type=EVP_PKEY_EC;
pp=&(xi->x_pkey->dec_pkey->pkey.ec);
if ((int)strlen(header) > 10) /* assume encrypted */
raw=1;
}
else
#endif
{
d2i=NULL;
pp=NULL;
}
if (d2i != NULL)
{
if (!raw)
{
EVP_CIPHER_INFO cipher;
if (!PEM_get_EVP_CIPHER_INFO(header,&cipher))
goto err;
if (!PEM_do_header(&cipher,data,&len,cb,u))
goto err;
p=data;
if (d2i(pp,&p,len) == NULL)
{
PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_ASN1_LIB);
goto err;
}
}
else
{ /* encrypted RSA data */
if (!PEM_get_EVP_CIPHER_INFO(header,
&xi->enc_cipher)) goto err;
xi->enc_data=(char *)data;
xi->enc_len=(int)len;
data=NULL;
}
}
else {
/* unknown */
}
if (name != NULL) OPENSSL_free(name);
if (header != NULL) OPENSSL_free(header);
if (data != NULL) OPENSSL_free(data);
name=NULL;
header=NULL;
data=NULL;
}
/* if the last one hasn't been pushed yet and there is anything
* in it then add it to the stack ...
*/
if ((xi->x509 != NULL) || (xi->crl != NULL) ||
(xi->x_pkey != NULL) || (xi->enc_data != NULL))
{
if (!sk_X509_INFO_push(ret,xi)) goto err;
xi=NULL;
}
ok=1;
err:
if (xi != NULL) X509_INFO_free(xi);
if (!ok)
{
for (i=0; ((int)i)<sk_X509_INFO_num(ret); i++)
{
xi=sk_X509_INFO_value(ret,i);
X509_INFO_free(xi);
}
if (ret != sk) sk_X509_INFO_free(ret);
ret=NULL;
}
if (name != NULL) OPENSSL_free(name);
if (header != NULL) OPENSSL_free(header);
if (data != NULL) OPENSSL_free(data);
return(ret);
}
/* A TJH addition */
int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc,
unsigned char *kstr, int klen, pem_password_cb *cb, void *u)
{
EVP_CIPHER_CTX ctx;
int i,ret=0;
unsigned char *data=NULL;
const char *objstr=NULL;
char buf[PEM_BUFSIZE];
unsigned char *iv=NULL;
if (enc != NULL)
{
objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
if (objstr == NULL)
{
PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
goto err;
}
}
/* now for the fun part ... if we have a private key then
* we have to be able to handle a not-yet-decrypted key
* being written out correctly ... if it is decrypted or
* it is non-encrypted then we use the base code
*/
if (xi->x_pkey!=NULL)
{
if ( (xi->enc_data!=NULL) && (xi->enc_len>0) )
{
/* copy from weirdo names into more normal things */
iv=xi->enc_cipher.iv;
data=(unsigned char *)xi->enc_data;
i=xi->enc_len;
/* we take the encryption data from the
* internal stuff rather than what the
* user has passed us ... as we have to
* match exactly for some strange reason
*/
objstr=OBJ_nid2sn(
EVP_CIPHER_nid(xi->enc_cipher.cipher));
if (objstr == NULL)
{
PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
goto err;
}
/* create the right magic header stuff */
OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf);
buf[0]='\0';
PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv);
/* use the normal code to write things out */
i=PEM_write_bio(bp,PEM_STRING_RSA,buf,data,i);
if (i <= 0) goto err;
}
else
{
/* Add DSA/DH */
#ifndef OPENSSL_NO_RSA
/* normal optionally encrypted stuff */
if (PEM_write_bio_RSAPrivateKey(bp,
xi->x_pkey->dec_pkey->pkey.rsa,
enc,kstr,klen,cb,u)<=0)
goto err;
#endif
}
}
/* if we have a certificate then write it out now */
if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp,xi->x509) <= 0))
goto err;
/* we are ignoring anything else that is loaded into the X509_INFO
* structure for the moment ... as I don't need it so I'm not
* coding it here and Eric can do it when this makes it into the
* base library --tjh
*/
ret=1;
err:
OPENSSL_cleanse((char *)&ctx,sizeof(ctx));
OPENSSL_cleanse(buf,PEM_BUFSIZE);
return(ret);
}
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