pem_info.c
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- /* 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;
- 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]=' ';
- 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);
- }