/* crypto/pem/pem_info.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* 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 (tjh@cryptsoft.com).
*
* 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 (eay@cryptsoft.com)"
* 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 (tjh@cryptsoft.com)"
*
* 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, ptype;
d2i_of_void *d2i = 0;
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;
ptype = 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();
ptype = EVP_PKEY_RSA;
pp = &xi->x_pkey->dec_pkey;
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();
ptype = EVP_PKEY_DSA;
pp = &xi->x_pkey->dec_pkey;
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();
ptype = EVP_PKEY_EC;
pp = &xi->x_pkey->dec_pkey;
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 (ptype) {
if (!d2i_PrivateKey(ptype, pp, &p, len)) {
PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB);
goto err;
}
} else 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)) {
if (enc == NULL) {
PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_CIPHER_IS_NULL);
goto err;
}
/* 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);
}
