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/* $OpenBSD: pem_info.c,v 1.22 2017/01/29 17:49:23 beck Exp $ */ |
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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 <string.h> |
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#include <openssl/opensslconf.h> |
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#include <openssl/buffer.h> |
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#include <openssl/err.h> |
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#include <openssl/evp.h> |
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#include <openssl/objects.h> |
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#include <openssl/pem.h> |
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#include <openssl/x509.h> |
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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_RSA |
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#include <openssl/rsa.h> |
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#endif |
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STACK_OF(X509_INFO) * |
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PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, |
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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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|
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if ((b = BIO_new(BIO_s_file())) == NULL) { |
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PEMerror(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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STACK_OF(X509_INFO) * |
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PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, |
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void *u) |
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{ |
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X509_INFO *xi = NULL; |
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562 |
char *name = NULL, *header = NULL; |
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void *pp; |
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281 |
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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✓✗ |
281 |
if (sk == NULL) { |
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✗✓ |
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if ((ret = sk_X509_INFO_new_null()) == NULL) { |
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PEMerror(ERR_R_MALLOC_FAILURE); |
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return 0; |
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} |
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} else |
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ret = sk; |
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|
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✓✗ |
281 |
if ((xi = X509_INFO_new()) == NULL) |
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goto err; |
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10438 |
for (;;) { |
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raw = 0; |
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ptype = 0; |
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10438 |
i = PEM_read_bio(bp, &name, &header, &data, &len); |
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✓✓ |
20595 |
if (i == 0) { |
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|
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error = ERR_GET_REASON(ERR_peek_last_error()); |
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✓✗ |
281 |
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: |
133 |
✗✓✗✗
|
20033 |
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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✓✓ |
20033 |
if (xi->x509 != NULL) { |
137 |
✓✗ |
9876 |
if (!sk_X509_INFO_push(ret, xi)) |
138 |
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goto err; |
139 |
✓✗ |
9876 |
if ((xi = X509_INFO_new()) == NULL) |
140 |
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goto err; |
141 |
|
9876 |
goto start; |
142 |
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} |
143 |
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10157 |
pp = &(xi->x509); |
144 |
✗✗ |
10157 |
} else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) { |
145 |
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d2i = (D2I_OF(void))d2i_X509_AUX; |
146 |
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if (xi->x509 != NULL) { |
147 |
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if (!sk_X509_INFO_push(ret, xi)) |
148 |
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goto err; |
149 |
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if ((xi = X509_INFO_new()) == NULL) |
150 |
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goto err; |
151 |
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goto start; |
152 |
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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; |
156 |
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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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179 |
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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 (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 |
189 |
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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)) |
193 |
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goto err; |
194 |
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if ((xi = X509_INFO_new()) == NULL) |
195 |
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goto err; |
196 |
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goto start; |
197 |
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} |
198 |
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199 |
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xi->enc_data = NULL; |
200 |
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xi->enc_len = 0; |
201 |
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202 |
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xi->x_pkey = X509_PKEY_new(); |
203 |
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if (xi->x_pkey == NULL) |
204 |
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goto err; |
205 |
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ptype = EVP_PKEY_DSA; |
206 |
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pp = &xi->x_pkey->dec_pkey; |
207 |
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if (strlen(header) > 10) /* assume encrypted */ |
208 |
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raw = 1; |
209 |
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} else |
210 |
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#endif |
211 |
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#ifndef OPENSSL_NO_EC |
212 |
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if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) { |
213 |
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d2i = (D2I_OF(void))d2i_ECPrivateKey; |
214 |
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if (xi->x_pkey != NULL) { |
215 |
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if (!sk_X509_INFO_push(ret, xi)) |
216 |
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goto err; |
217 |
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if ((xi = X509_INFO_new()) == NULL) |
218 |
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goto err; |
219 |
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goto start; |
220 |
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} |
221 |
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222 |
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xi->enc_data = NULL; |
223 |
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xi->enc_len = 0; |
224 |
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|
225 |
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xi->x_pkey = X509_PKEY_new(); |
226 |
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if (xi->x_pkey == NULL) |
227 |
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goto err; |
228 |
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ptype = EVP_PKEY_EC; |
229 |
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pp = &xi->x_pkey->dec_pkey; |
230 |
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if (strlen(header) > 10) /* assume encrypted */ |
231 |
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raw = 1; |
232 |
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} else |
233 |
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#endif |
234 |
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{ |
235 |
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d2i = NULL; |
236 |
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pp = NULL; |
237 |
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} |
238 |
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|
239 |
✓✗ |
10157 |
if (d2i != NULL) { |
240 |
✓✗ |
10157 |
if (!raw) { |
241 |
|
10157 |
EVP_CIPHER_INFO cipher; |
242 |
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|
243 |
✗✓ |
10157 |
if (!PEM_get_EVP_CIPHER_INFO(header, &cipher)) |
244 |
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goto err; |
245 |
✗✓ |
10157 |
if (!PEM_do_header(&cipher, data, &len, cb, u)) |
246 |
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goto err; |
247 |
|
10157 |
p = data; |
248 |
✗✓ |
10157 |
if (ptype) { |
249 |
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if (!d2i_PrivateKey(ptype, pp, &p, |
250 |
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len)) { |
251 |
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PEMerror(ERR_R_ASN1_LIB); |
252 |
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goto err; |
253 |
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} |
254 |
✗✓ |
10157 |
} else if (d2i(pp, &p, len) == NULL) { |
255 |
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PEMerror(ERR_R_ASN1_LIB); |
256 |
|
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goto err; |
257 |
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} |
258 |
✓✓✓ |
20876 |
} else { /* encrypted RSA data */ |
259 |
|
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if (!PEM_get_EVP_CIPHER_INFO(header, |
260 |
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&xi->enc_cipher)) |
261 |
|
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goto err; |
262 |
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xi->enc_data = (char *)data; |
263 |
|
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xi->enc_len = (int)len; |
264 |
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data = NULL; |
265 |
|
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} |
266 |
|
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} else { |
267 |
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/* unknown */ |
268 |
|
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} |
269 |
|
10157 |
free(name); |
270 |
|
10157 |
free(header); |
271 |
|
10157 |
free(data); |
272 |
|
10157 |
name = NULL; |
273 |
|
10157 |
header = NULL; |
274 |
|
10157 |
data = NULL; |
275 |
|
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} |
276 |
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|
277 |
|
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/* if the last one hasn't been pushed yet and there is anything |
278 |
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* in it then add it to the stack ... |
279 |
|
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*/ |
280 |
✗✓✗✗ ✗✗ |
281 |
if ((xi->x509 != NULL) || (xi->crl != NULL) || |
281 |
|
|
(xi->x_pkey != NULL) || (xi->enc_data != NULL)) { |
282 |
✓✗ |
281 |
if (!sk_X509_INFO_push(ret, xi)) |
283 |
|
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goto err; |
284 |
|
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xi = NULL; |
285 |
|
281 |
} |
286 |
|
281 |
ok = 1; |
287 |
|
|
|
288 |
|
|
err: |
289 |
✗✓ |
281 |
if (xi != NULL) |
290 |
|
|
X509_INFO_free(xi); |
291 |
✗✓ |
281 |
if (!ok) { |
292 |
|
|
for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) { |
293 |
|
|
xi = sk_X509_INFO_value(ret, i); |
294 |
|
|
X509_INFO_free(xi); |
295 |
|
|
} |
296 |
|
|
if (ret != sk) |
297 |
|
|
sk_X509_INFO_free(ret); |
298 |
|
|
ret = NULL; |
299 |
|
|
} |
300 |
|
|
|
301 |
|
281 |
free(name); |
302 |
|
281 |
free(header); |
303 |
|
281 |
free(data); |
304 |
|
281 |
return (ret); |
305 |
|
281 |
} |
306 |
|
|
|
307 |
|
|
|
308 |
|
|
/* A TJH addition */ |
309 |
|
|
int |
310 |
|
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PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc, |
311 |
|
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unsigned char *kstr, int klen, pem_password_cb *cb, void *u) |
312 |
|
|
{ |
313 |
|
|
EVP_CIPHER_CTX ctx; |
314 |
|
|
int i, ret = 0; |
315 |
|
|
unsigned char *data = NULL; |
316 |
|
|
const char *objstr = NULL; |
317 |
|
|
char buf[PEM_BUFSIZE]; |
318 |
|
|
unsigned char *iv = NULL; |
319 |
|
|
|
320 |
|
|
if (enc != NULL) { |
321 |
|
|
objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); |
322 |
|
|
if (objstr == NULL) { |
323 |
|
|
PEMerror(PEM_R_UNSUPPORTED_CIPHER); |
324 |
|
|
goto err; |
325 |
|
|
} |
326 |
|
|
} |
327 |
|
|
|
328 |
|
|
/* now for the fun part ... if we have a private key then |
329 |
|
|
* we have to be able to handle a not-yet-decrypted key |
330 |
|
|
* being written out correctly ... if it is decrypted or |
331 |
|
|
* it is non-encrypted then we use the base code |
332 |
|
|
*/ |
333 |
|
|
if (xi->x_pkey != NULL) { |
334 |
|
|
if ((xi->enc_data != NULL) && (xi->enc_len > 0) ) { |
335 |
|
|
if (enc == NULL) { |
336 |
|
|
PEMerror(PEM_R_CIPHER_IS_NULL); |
337 |
|
|
goto err; |
338 |
|
|
} |
339 |
|
|
|
340 |
|
|
/* copy from weirdo names into more normal things */ |
341 |
|
|
iv = xi->enc_cipher.iv; |
342 |
|
|
data = (unsigned char *)xi->enc_data; |
343 |
|
|
i = xi->enc_len; |
344 |
|
|
|
345 |
|
|
/* we take the encryption data from the |
346 |
|
|
* internal stuff rather than what the |
347 |
|
|
* user has passed us ... as we have to |
348 |
|
|
* match exactly for some strange reason |
349 |
|
|
*/ |
350 |
|
|
objstr = OBJ_nid2sn( |
351 |
|
|
EVP_CIPHER_nid(xi->enc_cipher.cipher)); |
352 |
|
|
if (objstr == NULL) { |
353 |
|
|
PEMerror(PEM_R_UNSUPPORTED_CIPHER); |
354 |
|
|
goto err; |
355 |
|
|
} |
356 |
|
|
|
357 |
|
|
/* create the right magic header stuff */ |
358 |
|
|
if (strlen(objstr) + 23 + 2 * enc->iv_len + 13 > |
359 |
|
|
sizeof buf) { |
360 |
|
|
PEMerror(ASN1_R_BUFFER_TOO_SMALL); |
361 |
|
|
goto err; |
362 |
|
|
} |
363 |
|
|
buf[0] = '\0'; |
364 |
|
|
PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); |
365 |
|
|
PEM_dek_info(buf, objstr, enc->iv_len, (char *)iv); |
366 |
|
|
|
367 |
|
|
/* use the normal code to write things out */ |
368 |
|
|
i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i); |
369 |
|
|
if (i <= 0) |
370 |
|
|
goto err; |
371 |
|
|
} else { |
372 |
|
|
/* Add DSA/DH */ |
373 |
|
|
#ifndef OPENSSL_NO_RSA |
374 |
|
|
/* normal optionally encrypted stuff */ |
375 |
|
|
if (PEM_write_bio_RSAPrivateKey(bp, |
376 |
|
|
xi->x_pkey->dec_pkey->pkey.rsa, |
377 |
|
|
enc, kstr, klen, cb, u) <= 0) |
378 |
|
|
goto err; |
379 |
|
|
#endif |
380 |
|
|
} |
381 |
|
|
} |
382 |
|
|
|
383 |
|
|
/* if we have a certificate then write it out now */ |
384 |
|
|
if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0)) |
385 |
|
|
goto err; |
386 |
|
|
|
387 |
|
|
/* we are ignoring anything else that is loaded into the X509_INFO |
388 |
|
|
* structure for the moment ... as I don't need it so I'm not |
389 |
|
|
* coding it here and Eric can do it when this makes it into the |
390 |
|
|
* base library --tjh |
391 |
|
|
*/ |
392 |
|
|
|
393 |
|
|
ret = 1; |
394 |
|
|
|
395 |
|
|
err: |
396 |
|
|
explicit_bzero((char *)&ctx, sizeof(ctx)); |
397 |
|
|
explicit_bzero(buf, PEM_BUFSIZE); |
398 |
|
|
return (ret); |
399 |
|
|
} |