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310db06b79
boringssl/ssl/ssl_rsa.c
David Benjamin 310db06b79 Don't EVP_PKEY_copy_parameters when configuring cert and key. 
I believe this is a remnant of DSA. The logic strangely fails to check for
failure and then goes out of its way to ERR_clear_error. I believe this is so
that keys that are missing parameters silently move on. This dates to
upstream's dfeab0689f69c0b4bd3480ffd37a9cacc2f17d9c, which is SSLeay 0.9.1b. At
that time, EVP_PKEY_copy_parameters only did anything for DSA. (Now it only
does anything for ECDSA.)

My read is that this comes from DSA in PKIX's "optional domain parameters"
craziness. RFC 3279 says:

   If the DSA domain parameters are omitted from the SubjectPublicKeyInfo
   AlgorithmIdentifier and the CA signed the subject certificate using a
   signature algorithm other than DSA, then the subject's DSA domain parameters
   are distributed by other means.

This was probably part of some weird thing where, if your certificate is
missing parameters, the server would know what to use based on the private key.

(Also this was making the malloc tests unhappy.)

Change-Id: I8d8122a9f50a19e2bbe067f311a8e2d30774935c
Reviewed-on: https://boringssl-review.googlesource.com/3484
Reviewed-by: Adam Langley <agl@google.com>
2015-02-17 21:03:29 +00:00

699 lines
18 KiB
C
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/* 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 <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
#include "ssl_locl.h"
static int ssl_set_cert(CERT *c, X509 *x509);
static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey);
int SSL_use_certificate(SSL *ssl, X509 *x) {
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_certificate, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (!ssl_cert_inst(&ssl->cert)) {
OPENSSL_PUT_ERROR(SSL, SSL_use_certificate, ERR_R_MALLOC_FAILURE);
return 0;
}
return ssl_set_cert(ssl->cert, x);
}
int SSL_use_certificate_file(SSL *ssl, const char *file, int type) {
int reason_code;
BIO *in;
int ret = 0;
X509 *x = NULL;
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_certificate_file, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, SSL_use_certificate_file, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1) {
reason_code = ERR_R_ASN1_LIB;
x = d2i_X509_bio(in, NULL);
} else if (type == SSL_FILETYPE_PEM) {
reason_code = ERR_R_PEM_LIB;
x = PEM_read_bio_X509(in, NULL, ssl->ctx->default_passwd_callback,
ssl->ctx->default_passwd_callback_userdata);
} else {
OPENSSL_PUT_ERROR(SSL, SSL_use_certificate_file, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_certificate_file, reason_code);
goto end;
}
ret = SSL_use_certificate(ssl, x);
end:
if (x != NULL) {
X509_free(x);
}
if (in != NULL) {
BIO_free(in);
}
return ret;
}
int SSL_use_certificate_ASN1(SSL *ssl, const uint8_t *d, int len) {
X509 *x;
int ret;
x = d2i_X509(NULL, &d, (long)len);
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_certificate_ASN1, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_use_certificate(ssl, x);
X509_free(x);
return ret;
}
int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa) {
EVP_PKEY *pkey;
int ret;
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (!ssl_cert_inst(&ssl->cert)) {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey, ERR_R_MALLOC_FAILURE);
return 0;
}
pkey = EVP_PKEY_new();
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey, ERR_R_EVP_LIB);
return 0;
}
RSA_up_ref(rsa);
EVP_PKEY_assign_RSA(pkey, rsa);
ret = ssl_set_pkey(ssl->cert, pkey);
EVP_PKEY_free(pkey);
return ret;
}
static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey) {
int i;
i = ssl_cert_type(pkey);
if (i < 0) {
OPENSSL_PUT_ERROR(SSL, ssl_set_pkey, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
return 0;
}
if (c->pkeys[i].x509 != NULL) {
/* Sanity-check that the private key and the certificate match, unless the
* key is opaque (in case of, say, a smartcard). */
if (!EVP_PKEY_is_opaque(pkey) &&
!X509_check_private_key(c->pkeys[i].x509, pkey)) {
X509_free(c->pkeys[i].x509);
c->pkeys[i].x509 = NULL;
return 0;
}
}
if (c->pkeys[i].privatekey != NULL) {
EVP_PKEY_free(c->pkeys[i].privatekey);
}
c->pkeys[i].privatekey = EVP_PKEY_dup(pkey);
c->key = &(c->pkeys[i]);
return 1;
}
int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type) {
int reason_code, ret = 0;
BIO *in;
RSA *rsa = NULL;
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey_file, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey_file, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1) {
reason_code = ERR_R_ASN1_LIB;
rsa = d2i_RSAPrivateKey_bio(in, NULL);
} else if (type == SSL_FILETYPE_PEM) {
reason_code = ERR_R_PEM_LIB;
rsa =
PEM_read_bio_RSAPrivateKey(in, NULL, ssl->ctx->default_passwd_callback,
ssl->ctx->default_passwd_callback_userdata);
} else {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey_file, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey_file, reason_code);
goto end;
}
ret = SSL_use_RSAPrivateKey(ssl, rsa);
RSA_free(rsa);
end:
if (in != NULL) {
BIO_free(in);
}
return ret;
}
int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, uint8_t *d, long len) {
int ret;
const uint8_t *p;
RSA *rsa;
p = d;
rsa = d2i_RSAPrivateKey(NULL, &p, (long)len);
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_RSAPrivateKey_ASN1, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_use_RSAPrivateKey(ssl, rsa);
RSA_free(rsa);
return ret;
}
int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey) {
int ret;
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_PrivateKey, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (!ssl_cert_inst(&ssl->cert)) {
OPENSSL_PUT_ERROR(SSL, SSL_use_PrivateKey, ERR_R_MALLOC_FAILURE);
return 0;
}
ret = ssl_set_pkey(ssl->cert, pkey);
return ret;
}
int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type) {
int reason_code, ret = 0;
BIO *in;
EVP_PKEY *pkey = NULL;
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_PrivateKey_file, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, SSL_use_PrivateKey_file, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_PEM) {
reason_code = ERR_R_PEM_LIB;
pkey = PEM_read_bio_PrivateKey(in, NULL, ssl->ctx->default_passwd_callback,
ssl->ctx->default_passwd_callback_userdata);
} else if (type == SSL_FILETYPE_ASN1) {
reason_code = ERR_R_ASN1_LIB;
pkey = d2i_PrivateKey_bio(in, NULL);
} else {
OPENSSL_PUT_ERROR(SSL, SSL_use_PrivateKey_file, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_PrivateKey_file, reason_code);
goto end;
}
ret = SSL_use_PrivateKey(ssl, pkey);
EVP_PKEY_free(pkey);
end:
if (in != NULL) {
BIO_free(in);
}
return ret;
}
int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const uint8_t *d, long len) {
int ret;
const uint8_t *p;
EVP_PKEY *pkey;
p = d;
pkey = d2i_PrivateKey(type, NULL, &p, (long)len);
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_use_PrivateKey_ASN1, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_use_PrivateKey(ssl, pkey);
EVP_PKEY_free(pkey);
return ret;
}
int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) {
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate,
ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (!ssl_cert_inst(&ctx->cert)) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate, ERR_R_MALLOC_FAILURE);
return 0;
}
return ssl_set_cert(ctx->cert, x);
}
static int ssl_set_cert(CERT *c, X509 *x) {
EVP_PKEY *pkey;
int i;
pkey = X509_get_pubkey(x);
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, ssl_set_cert, SSL_R_X509_LIB);
return 0;
}
i = ssl_cert_type(pkey);
if (i < 0) {
OPENSSL_PUT_ERROR(SSL, ssl_set_cert, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
EVP_PKEY_free(pkey);
return 0;
}
if (c->pkeys[i].privatekey != NULL) {
/* Sanity-check that the private key and the certificate match, unless the
* key is opaque (in case of, say, a smartcard). */
if (!EVP_PKEY_is_opaque(c->pkeys[i].privatekey) &&
!X509_check_private_key(x, c->pkeys[i].privatekey)) {
/* don't fail for a cert/key mismatch, just free current private key
* (when switching to a different cert & key, first this function should
* be used, then ssl_set_pkey */
EVP_PKEY_free(c->pkeys[i].privatekey);
c->pkeys[i].privatekey = NULL;
/* clear error queue */
ERR_clear_error();
}
}
EVP_PKEY_free(pkey);
if (c->pkeys[i].x509 != NULL) {
X509_free(c->pkeys[i].x509);
}
c->pkeys[i].x509 = X509_up_ref(x);
c->key = &(c->pkeys[i]);
return 1;
}
int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type) {
int reason_code;
BIO *in;
int ret = 0;
X509 *x = NULL;
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_file, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_file, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1) {
reason_code = ERR_R_ASN1_LIB;
x = d2i_X509_bio(in, NULL);
} else if (type == SSL_FILETYPE_PEM) {
reason_code = ERR_R_PEM_LIB;
x = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata);
} else {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_file,
SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_file, reason_code);
goto end;
}
ret = SSL_CTX_use_certificate(ctx, x);
end:
if (x != NULL) {
X509_free(x);
}
if (in != NULL) {
BIO_free(in);
}
return ret;
}
int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const uint8_t *d) {
X509 *x;
int ret;
x = d2i_X509(NULL, &d, (long)len);
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_ASN1, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_CTX_use_certificate(ctx, x);
X509_free(x);
return ret;
}
int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa) {
int ret;
EVP_PKEY *pkey;
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey,
ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (!ssl_cert_inst(&ctx->cert)) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey, ERR_R_MALLOC_FAILURE);
return 0;
}
pkey = EVP_PKEY_new();
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey, ERR_R_EVP_LIB);
return 0;
}
RSA_up_ref(rsa);
EVP_PKEY_assign_RSA(pkey, rsa);
ret = ssl_set_pkey(ctx->cert, pkey);
EVP_PKEY_free(pkey);
return ret;
}
int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type) {
int reason_code, ret = 0;
BIO *in;
RSA *rsa = NULL;
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey_file, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey_file, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1) {
reason_code = ERR_R_ASN1_LIB;
rsa = d2i_RSAPrivateKey_bio(in, NULL);
} else if (type == SSL_FILETYPE_PEM) {
reason_code = ERR_R_PEM_LIB;
rsa = PEM_read_bio_RSAPrivateKey(in, NULL, ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata);
} else {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey_file,
SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey_file, reason_code);
goto end;
}
ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
RSA_free(rsa);
end:
if (in != NULL) {
BIO_free(in);
}
return ret;
}
int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const uint8_t *d, long len) {
int ret;
const uint8_t *p;
RSA *rsa;
p = d;
rsa = d2i_RSAPrivateKey(NULL, &p, (long)len);
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_RSAPrivateKey_ASN1, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
RSA_free(rsa);
return ret;
}
int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey) {
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_PrivateKey, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (!ssl_cert_inst(&ctx->cert)) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_PrivateKey, ERR_R_MALLOC_FAILURE);
return 0;
}
return ssl_set_pkey(ctx->cert, pkey);
}
int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type) {
int reason_code, ret = 0;
BIO *in;
EVP_PKEY *pkey = NULL;
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_PrivateKey_file, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_PrivateKey_file, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_PEM) {
reason_code = ERR_R_PEM_LIB;
pkey = PEM_read_bio_PrivateKey(in, NULL, ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata);
} else if (type == SSL_FILETYPE_ASN1) {
reason_code = ERR_R_ASN1_LIB;
pkey = d2i_PrivateKey_bio(in, NULL);
} else {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_PrivateKey_file, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_PrivateKey_file, reason_code);
goto end;
}
ret = SSL_CTX_use_PrivateKey(ctx, pkey);
EVP_PKEY_free(pkey);
end:
if (in != NULL) {
BIO_free(in);
}
return ret;
}
int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, const uint8_t *d,
long len) {
int ret;
const uint8_t *p;
EVP_PKEY *pkey;
p = d;
pkey = d2i_PrivateKey(type, NULL, &p, (long)len);
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_PrivateKey_ASN1, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_CTX_use_PrivateKey(ctx, pkey);
EVP_PKEY_free(pkey);
return ret;
}
/* Read a file that contains our certificate in "PEM" format, possibly followed
* by a sequence of CA certificates that should be sent to the peer in the
* Certificate message. */
int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file) {
BIO *in;
int ret = 0;
X509 *x = NULL;
ERR_clear_error(); /* clear error stack for SSL_CTX_use_certificate() */
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_chain_file, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_chain_file, ERR_R_SYS_LIB);
goto end;
}
x = PEM_read_bio_X509_AUX(in, NULL, ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata);
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_certificate_chain_file, ERR_R_PEM_LIB);
goto end;
}
ret = SSL_CTX_use_certificate(ctx, x);
if (ERR_peek_error() != 0) {
ret = 0; /* Key/certificate mismatch doesn't imply ret==0 ... */
}
if (ret) {
/* If we could set up our certificate, now proceed to the CA
* certificates. */
X509 *ca;
int r;
unsigned long err;
SSL_CTX_clear_chain_certs(ctx);
while ((ca = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata)) !=
NULL) {
r = SSL_CTX_add0_chain_cert(ctx, ca);
if (!r) {
X509_free(ca);
ret = 0;
goto end;
}
/* Note that we must not free r if it was successfully added to the chain
* (while we must free the main certificate, since its reference count is
* increased by SSL_CTX_use_certificate). */
}
/* When the while loop ends, it's usually just EOF. */
err = ERR_peek_last_error();
if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
ERR_clear_error();
} else {
ret = 0; /* some real error */
}
}
end:
if (x != NULL) {
X509_free(x);
}
if (in != NULL) {
BIO_free(in);
}
return ret;
}
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