383 lines
11 KiB
C
383 lines
11 KiB
C
|
/* $OpenBSD: pem_info.c,v 1.24 2020/07/25 11:53:37 schwarze Exp $ */
|
||
|
|
/* 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 <string.h>
|
||
|
|
|
||
|
|
#include <openssl/opensslconf.h>
|
||
|
|
|
||
|
|
#include <openssl/buffer.h>
|
||
|
|
#include <openssl/err.h>
|
||
|
|
#include <openssl/evp.h>
|
||
|
|
#include <openssl/objects.h>
|
||
|
|
#include <openssl/pem.h>
|
||
|
|
#include <openssl/x509.h>
|
||
|
|
|
||
|
|
#ifndef OPENSSL_NO_DSA
|
||
|
|
#include <openssl/dsa.h>
|
||
|
|
#endif
|
||
|
|
#ifndef OPENSSL_NO_RSA
|
||
|
|
#include <openssl/rsa.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
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) {
|
||
|
|
PEMerror(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);
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
int ok = 0;
|
||
|
|
int num_in, ptype, raw;
|
||
|
|
STACK_OF(X509_INFO) *ret = sk;
|
||
|
|
d2i_of_void *d2i = NULL;
|
||
|
|
|
||
|
|
if (ret == NULL) {
|
||
|
|
if ((ret = sk_X509_INFO_new_null()) == NULL) {
|
||
|
|
PEMerror(ERR_R_MALLOC_FAILURE);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
num_in = sk_X509_INFO_num(ret);
|
||
|
|
|
||
|
|
if ((xi = X509_INFO_new()) == NULL)
|
||
|
|
goto err;
|
||
|
|
for (;;) {
|
||
|
|
raw = 0;
|
||
|
|
ptype = 0;
|
||
|
|
if (!PEM_read_bio(bp, &name, &header, &data, &len)) {
|
||
|
|
if (ERR_GET_REASON(ERR_peek_last_error()) ==
|
||
|
|
PEM_R_NO_START_LINE) {
|
||
|
|
ERR_clear_error();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
xi->enc_data = NULL;
|
||
|
|
xi->enc_len = 0;
|
||
|
|
xi->x_pkey = X509_PKEY_new();
|
||
|
|
if (xi->x_pkey == NULL)
|
||
|
|
goto err;
|
||
|
|
ptype = EVP_PKEY_RSA;
|
||
|
|
pp = &xi->x_pkey->dec_pkey;
|
||
|
|
if (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;
|
||
|
|
}
|
||
|
|
xi->enc_data = NULL;
|
||
|
|
xi->enc_len = 0;
|
||
|
|
xi->x_pkey = X509_PKEY_new();
|
||
|
|
if (xi->x_pkey == NULL)
|
||
|
|
goto err;
|
||
|
|
ptype = EVP_PKEY_DSA;
|
||
|
|
pp = &xi->x_pkey->dec_pkey;
|
||
|
|
if (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;
|
||
|
|
}
|
||
|
|
xi->enc_data = NULL;
|
||
|
|
xi->enc_len = 0;
|
||
|
|
xi->x_pkey = X509_PKEY_new();
|
||
|
|
if (xi->x_pkey == NULL)
|
||
|
|
goto err;
|
||
|
|
ptype = EVP_PKEY_EC;
|
||
|
|
pp = &xi->x_pkey->dec_pkey;
|
||
|
|
if (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)) {
|
||
|
|
PEMerror(ERR_R_ASN1_LIB);
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
} else if (d2i(pp, &p, len) == NULL) {
|
||
|
|
PEMerror(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 */
|
||
|
|
}
|
||
|
|
free(name);
|
||
|
|
free(header);
|
||
|
|
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 (!ok) {
|
||
|
|
while (sk_X509_INFO_num(ret) > num_in)
|
||
|
|
X509_INFO_free(sk_X509_INFO_pop(ret));
|
||
|
|
if (ret != sk)
|
||
|
|
sk_X509_INFO_free(ret);
|
||
|
|
ret = NULL;
|
||
|
|
}
|
||
|
|
X509_INFO_free(xi);
|
||
|
|
free(name);
|
||
|
|
free(header);
|
||
|
|
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) {
|
||
|
|
PEMerror(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) {
|
||
|
|
PEMerror(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) {
|
||
|
|
PEMerror(PEM_R_UNSUPPORTED_CIPHER);
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* create the right magic header stuff */
|
||
|
|
if (strlen(objstr) + 23 + 2 * enc->iv_len + 13 >
|
||
|
|
sizeof buf) {
|
||
|
|
PEMerror(ASN1_R_BUFFER_TOO_SMALL);
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
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:
|
||
|
|
explicit_bzero((char *)&ctx, sizeof(ctx));
|
||
|
|
explicit_bzero(buf, PEM_BUFSIZE);
|
||
|
|
return (ret);
|
||
|
|
}
|