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394 lines
13 KiB
394 lines
13 KiB
/* crypto/pem/pem_info.c */ |
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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* All rights reserved. |
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* |
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* This package is an SSL implementation written |
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* by Eric Young (eay@cryptsoft.com). |
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* The implementation was written so as to conform with Netscapes SSL. |
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* |
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* This library is free for commercial and non-commercial use as long as |
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* the following conditions are aheared to. The following conditions |
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* apply to all code found in this distribution, be it the RC4, RSA, |
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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* included with this distribution is covered by the same copyright terms |
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* except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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* |
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* Copyright remains Eric Young's, and as such any Copyright notices in |
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* the code are not to be removed. |
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* If this package is used in a product, Eric Young should be given attribution |
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* as the author of the parts of the library used. |
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* This can be in the form of a textual message at program startup or |
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* in documentation (online or textual) provided with the package. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* "This product includes cryptographic software written by |
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* Eric Young (eay@cryptsoft.com)" |
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* The word 'cryptographic' can be left out if the rouines from the library |
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* being used are not cryptographic related :-). |
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* 4. If you include any Windows specific code (or a derivative thereof) from |
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* the apps directory (application code) you must include an acknowledgement: |
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* The licence and distribution terms for any publically available version or |
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* derivative of this code cannot be changed. i.e. this code cannot simply be |
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* copied and put under another distribution licence |
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* [including the GNU Public Licence.] |
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*/ |
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#include <stdio.h> |
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#include "cryptlib.h" |
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#include <openssl/buffer.h> |
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#include <openssl/objects.h> |
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#include <openssl/evp.h> |
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#include <openssl/x509.h> |
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#include <openssl/pem.h> |
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#ifndef OPENSSL_NO_RSA |
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# include <openssl/rsa.h> |
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#endif |
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#ifndef OPENSSL_NO_DSA |
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# include <openssl/dsa.h> |
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#endif |
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#ifndef OPENSSL_NO_FP_API |
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STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, |
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pem_password_cb *cb, void *u) |
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{ |
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BIO *b; |
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STACK_OF(X509_INFO) *ret; |
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if ((b = BIO_new(BIO_s_file())) == NULL) { |
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PEMerr(PEM_F_PEM_X509_INFO_READ, ERR_R_BUF_LIB); |
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return (0); |
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} |
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BIO_set_fp(b, fp, BIO_NOCLOSE); |
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ret = PEM_X509_INFO_read_bio(b, sk, cb, u); |
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BIO_free(b); |
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return (ret); |
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} |
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#endif |
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STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, |
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pem_password_cb *cb, void *u) |
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{ |
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X509_INFO *xi = NULL; |
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char *name = NULL, *header = NULL; |
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void *pp; |
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unsigned char *data = NULL; |
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const unsigned char *p; |
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long len, error = 0; |
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int ok = 0; |
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STACK_OF(X509_INFO) *ret = NULL; |
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unsigned int i, raw, ptype; |
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d2i_of_void *d2i = 0; |
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|
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if (sk == NULL) { |
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if ((ret = sk_X509_INFO_new_null()) == NULL) { |
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PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_MALLOC_FAILURE); |
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goto err; |
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} |
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} else |
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ret = sk; |
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if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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for (;;) { |
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raw = 0; |
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ptype = 0; |
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i = PEM_read_bio(bp, &name, &header, &data, &len); |
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if (i == 0) { |
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error = ERR_GET_REASON(ERR_peek_last_error()); |
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if (error == PEM_R_NO_START_LINE) { |
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ERR_clear_error(); |
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break; |
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} |
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goto err; |
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} |
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start: |
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if ((strcmp(name, PEM_STRING_X509) == 0) || |
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(strcmp(name, PEM_STRING_X509_OLD) == 0)) { |
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d2i = (D2I_OF(void)) d2i_X509; |
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if (xi->x509 != NULL) { |
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if (!sk_X509_INFO_push(ret, xi)) |
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goto err; |
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if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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goto start; |
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} |
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pp = &(xi->x509); |
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} else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) { |
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d2i = (D2I_OF(void)) d2i_X509_AUX; |
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if (xi->x509 != NULL) { |
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if (!sk_X509_INFO_push(ret, xi)) |
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goto err; |
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if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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goto start; |
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} |
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pp = &(xi->x509); |
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} else if (strcmp(name, PEM_STRING_X509_CRL) == 0) { |
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d2i = (D2I_OF(void)) d2i_X509_CRL; |
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if (xi->crl != NULL) { |
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if (!sk_X509_INFO_push(ret, xi)) |
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goto err; |
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if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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goto start; |
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} |
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pp = &(xi->crl); |
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} else |
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#ifndef OPENSSL_NO_RSA |
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if (strcmp(name, PEM_STRING_RSA) == 0) { |
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d2i = (D2I_OF(void)) d2i_RSAPrivateKey; |
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if (xi->x_pkey != NULL) { |
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if (!sk_X509_INFO_push(ret, xi)) |
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goto err; |
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if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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goto start; |
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} |
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xi->enc_data = NULL; |
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xi->enc_len = 0; |
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xi->x_pkey = X509_PKEY_new(); |
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if (xi->x_pkey == NULL) |
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goto err; |
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ptype = EVP_PKEY_RSA; |
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pp = &xi->x_pkey->dec_pkey; |
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if ((int)strlen(header) > 10) /* assume encrypted */ |
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raw = 1; |
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} else |
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#endif |
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#ifndef OPENSSL_NO_DSA |
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if (strcmp(name, PEM_STRING_DSA) == 0) { |
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d2i = (D2I_OF(void)) d2i_DSAPrivateKey; |
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if (xi->x_pkey != NULL) { |
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if (!sk_X509_INFO_push(ret, xi)) |
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goto err; |
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if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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goto start; |
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} |
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xi->enc_data = NULL; |
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xi->enc_len = 0; |
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xi->x_pkey = X509_PKEY_new(); |
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if (xi->x_pkey == NULL) |
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goto err; |
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ptype = EVP_PKEY_DSA; |
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pp = &xi->x_pkey->dec_pkey; |
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if ((int)strlen(header) > 10) /* assume encrypted */ |
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raw = 1; |
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} else |
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#endif |
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#ifndef OPENSSL_NO_EC |
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if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) { |
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d2i = (D2I_OF(void)) d2i_ECPrivateKey; |
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if (xi->x_pkey != NULL) { |
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if (!sk_X509_INFO_push(ret, xi)) |
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goto err; |
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if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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goto start; |
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} |
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xi->enc_data = NULL; |
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xi->enc_len = 0; |
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xi->x_pkey = X509_PKEY_new(); |
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if (xi->x_pkey == NULL) |
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goto err; |
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ptype = EVP_PKEY_EC; |
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pp = &xi->x_pkey->dec_pkey; |
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if ((int)strlen(header) > 10) /* assume encrypted */ |
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raw = 1; |
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} else |
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#endif |
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{ |
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d2i = NULL; |
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pp = NULL; |
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} |
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if (d2i != NULL) { |
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if (!raw) { |
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EVP_CIPHER_INFO cipher; |
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if (!PEM_get_EVP_CIPHER_INFO(header, &cipher)) |
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goto err; |
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if (!PEM_do_header(&cipher, data, &len, cb, u)) |
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goto err; |
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p = data; |
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if (ptype) { |
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if (!d2i_PrivateKey(ptype, pp, &p, len)) { |
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PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB); |
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goto err; |
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} |
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} else if (d2i(pp, &p, len) == NULL) { |
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PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB); |
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goto err; |
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} |
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} else { /* encrypted RSA data */ |
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if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher)) |
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goto err; |
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xi->enc_data = (char *)data; |
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xi->enc_len = (int)len; |
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data = NULL; |
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} |
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} else { |
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/* unknown */ |
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} |
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if (name != NULL) |
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OPENSSL_free(name); |
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if (header != NULL) |
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OPENSSL_free(header); |
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if (data != NULL) |
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OPENSSL_free(data); |
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name = NULL; |
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header = NULL; |
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data = NULL; |
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} |
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/* |
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* if the last one hasn't been pushed yet and there is anything in it |
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* then add it to the stack ... |
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*/ |
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if ((xi->x509 != NULL) || (xi->crl != NULL) || |
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(xi->x_pkey != NULL) || (xi->enc_data != NULL)) { |
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if (!sk_X509_INFO_push(ret, xi)) |
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goto err; |
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xi = NULL; |
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} |
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ok = 1; |
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err: |
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if (xi != NULL) |
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X509_INFO_free(xi); |
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if (!ok) { |
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for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) { |
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xi = sk_X509_INFO_value(ret, i); |
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X509_INFO_free(xi); |
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} |
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if (ret != sk) |
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sk_X509_INFO_free(ret); |
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ret = NULL; |
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} |
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if (name != NULL) |
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OPENSSL_free(name); |
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if (header != NULL) |
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OPENSSL_free(header); |
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if (data != NULL) |
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OPENSSL_free(data); |
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return (ret); |
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} |
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/* A TJH addition */ |
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int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc, |
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unsigned char *kstr, int klen, |
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pem_password_cb *cb, void *u) |
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{ |
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EVP_CIPHER_CTX ctx; |
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int i, ret = 0; |
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unsigned char *data = NULL; |
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const char *objstr = NULL; |
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char buf[PEM_BUFSIZE]; |
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unsigned char *iv = NULL; |
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if (enc != NULL) { |
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objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); |
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if (objstr == NULL) { |
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PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER); |
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goto err; |
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} |
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} |
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/* |
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* now for the fun part ... if we have a private key then we have to be |
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* able to handle a not-yet-decrypted key being written out correctly ... |
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* if it is decrypted or it is non-encrypted then we use the base code |
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*/ |
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if (xi->x_pkey != NULL) { |
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if ((xi->enc_data != NULL) && (xi->enc_len > 0)) { |
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if (enc == NULL) { |
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PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_CIPHER_IS_NULL); |
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goto err; |
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} |
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/* copy from weirdo names into more normal things */ |
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iv = xi->enc_cipher.iv; |
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data = (unsigned char *)xi->enc_data; |
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i = xi->enc_len; |
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|
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/* |
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* we take the encryption data from the internal stuff rather |
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* than what the user has passed us ... as we have to match |
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* exactly for some strange reason |
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*/ |
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objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher)); |
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if (objstr == NULL) { |
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PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, |
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PEM_R_UNSUPPORTED_CIPHER); |
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goto err; |
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} |
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/* create the right magic header stuff */ |
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OPENSSL_assert(strlen(objstr) + 23 + 2 * enc->iv_len + 13 <= |
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sizeof buf); |
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buf[0] = '\0'; |
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PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); |
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PEM_dek_info(buf, objstr, enc->iv_len, (char *)iv); |
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/* use the normal code to write things out */ |
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i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i); |
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if (i <= 0) |
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goto err; |
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} else { |
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/* Add DSA/DH */ |
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#ifndef OPENSSL_NO_RSA |
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/* normal optionally encrypted stuff */ |
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if (PEM_write_bio_RSAPrivateKey(bp, |
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xi->x_pkey->dec_pkey->pkey.rsa, |
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enc, kstr, klen, cb, u) <= 0) |
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goto err; |
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#endif |
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} |
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} |
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/* if we have a certificate then write it out now */ |
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if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0)) |
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goto err; |
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/* |
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* we are ignoring anything else that is loaded into the X509_INFO |
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* structure for the moment ... as I don't need it so I'm not coding it |
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* here and Eric can do it when this makes it into the base library --tjh |
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*/ |
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ret = 1; |
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err: |
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OPENSSL_cleanse((char *)&ctx, sizeof(ctx)); |
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OPENSSL_cleanse(buf, PEM_BUFSIZE); |
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return (ret); |
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}
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