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404 lines
11 KiB
C
404 lines
11 KiB
C
/* 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 <openssl/pem.h>
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <openssl/buf.h>
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#include <openssl/dsa.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/mem.h>
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#include <openssl/obj.h>
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#include <openssl/rsa.h>
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#include <openssl/x509.h>
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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, 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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{
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OPENSSL_PUT_ERROR(PEM, 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, 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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if (sk == NULL)
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{
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if ((ret=sk_X509_INFO_new_null()) == NULL)
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{
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OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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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) goto err;
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for (;;)
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{
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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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{
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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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{
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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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{
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d2i=(D2I_OF(void))d2i_X509;
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if (xi->x509 != NULL)
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{
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if (!sk_X509_INFO_push(ret,xi)) goto err;
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if ((xi=X509_INFO_new()) == NULL) goto err;
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goto start;
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}
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pp=&(xi->x509);
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}
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else if ((strcmp(name,PEM_STRING_X509_TRUSTED) == 0))
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{
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d2i=(D2I_OF(void))d2i_X509_AUX;
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if (xi->x509 != NULL)
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{
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if (!sk_X509_INFO_push(ret,xi)) goto err;
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if ((xi=X509_INFO_new()) == NULL) goto err;
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goto start;
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}
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pp=&(xi->x509);
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}
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else if (strcmp(name,PEM_STRING_X509_CRL) == 0)
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{
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d2i=(D2I_OF(void))d2i_X509_CRL;
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if (xi->crl != NULL)
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{
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if (!sk_X509_INFO_push(ret,xi)) goto err;
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if ((xi=X509_INFO_new()) == NULL) goto err;
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goto start;
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}
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pp=&(xi->crl);
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}
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else
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if (strcmp(name,PEM_STRING_RSA) == 0)
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{
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d2i=(D2I_OF(void))d2i_RSAPrivateKey;
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if (xi->x_pkey != NULL)
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{
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if (!sk_X509_INFO_push(ret,xi)) goto err;
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if ((xi=X509_INFO_new()) == NULL) 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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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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}
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else
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#ifndef OPENSSL_NO_DSA
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if (strcmp(name,PEM_STRING_DSA) == 0)
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{
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d2i=(D2I_OF(void))d2i_DSAPrivateKey;
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if (xi->x_pkey != NULL)
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{
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if (!sk_X509_INFO_push(ret,xi)) goto err;
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if ((xi=X509_INFO_new()) == NULL) 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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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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}
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else
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#endif
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if (strcmp(name,PEM_STRING_ECPRIVATEKEY) == 0)
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{
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d2i=(D2I_OF(void))d2i_ECPrivateKey;
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if (xi->x_pkey != NULL)
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{
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if (!sk_X509_INFO_push(ret,xi)) goto err;
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if ((xi=X509_INFO_new()) == NULL) 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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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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}
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else
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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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{
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if (!raw)
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{
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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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{
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if (!d2i_PrivateKey(ptype, pp, &p, len))
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{
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OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
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goto err;
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}
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}
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else if (d2i(pp,&p,len) == NULL)
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{
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OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
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goto err;
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}
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}
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else
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{ /* encrypted RSA data */
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if (!PEM_get_EVP_CIPHER_INFO(header,
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&xi->enc_cipher)) 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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}
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else {
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/* unknown */
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}
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if (name != NULL) OPENSSL_free(name);
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if (header != NULL) OPENSSL_free(header);
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if (data != NULL) 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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/* if the last one hasn't been pushed yet and there is anything
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* in it 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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{
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if (!sk_X509_INFO_push(ret,xi)) 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) X509_INFO_free(xi);
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if (!ok)
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{
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for (i=0; ((int)i)<sk_X509_INFO_num(ret); i++)
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{
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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) sk_X509_INFO_free(ret);
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ret=NULL;
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}
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if (name != NULL) OPENSSL_free(name);
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if (header != NULL) OPENSSL_free(header);
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if (data != NULL) 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, 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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unsigned iv_len = 0;
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if (enc != NULL)
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{
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iv_len = EVP_CIPHER_iv_length(enc);
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objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
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if (objstr == NULL)
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{
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OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
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goto err;
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}
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}
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/* now for the fun part ... if we have a private key then
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* we have to be able to handle a not-yet-decrypted key
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* being written out correctly ... if it is decrypted or
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* 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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{
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if ( (xi->enc_data!=NULL) && (xi->enc_len>0) )
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{
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if (enc == NULL)
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{
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OPENSSL_PUT_ERROR(PEM, 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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/* we take the encryption data from the
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* internal stuff rather than what the
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* user has passed us ... as we have to
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* match exactly for some strange reason
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*/
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objstr=OBJ_nid2sn(
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EVP_CIPHER_nid(xi->enc_cipher.cipher));
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if (objstr == NULL)
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{
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OPENSSL_PUT_ERROR(PEM, 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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assert(strlen(objstr)+23+2*iv_len+13 <= 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,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) goto err;
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}
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else
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{
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/* Add DSA/DH */
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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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}
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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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/* 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
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* coding it here and Eric can do it when this makes it into the
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* 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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