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c11ea942b7
boringssl/ssl/ssl_file.cc
David Benjamin c11ea942b7 Convert comments in ssl. 
That's the last of it!

Change-Id: I93d1f5ab7e95b2ad105c34b24297a0bf77625263
Reviewed-on: https://boringssl-review.googlesource.com/19784
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-08-29 21:33:32 +00:00

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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.]
*/
/* ====================================================================
* Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <openssl/ssl.h>
#include <errno.h>
#include <string.h>
#include <openssl/asn1.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/pem.h>
#include <openssl/stack.h>
#include <openssl/x509.h>
#include "internal.h"
static int xname_cmp(const X509_NAME **a, const X509_NAME **b) {
return X509_NAME_cmp(*a, *b);
}
// TODO(davidben): Is there any reason this doesn't call
// |SSL_add_file_cert_subjects_to_stack|?
STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) {
BIO *in;
X509 *x = NULL;
X509_NAME *xn = NULL;
STACK_OF(X509_NAME) *ret = NULL, *sk;
sk = sk_X509_NAME_new(xname_cmp);
in = BIO_new(BIO_s_file());
if (sk == NULL || in == NULL) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (!BIO_read_filename(in, file)) {
goto err;
}
for (;;) {
if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) {
break;
}
if (ret == NULL) {
ret = sk_X509_NAME_new_null();
if (ret == NULL) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
}
xn = X509_get_subject_name(x);
if (xn == NULL) {
goto err;
}
// Check for duplicates.
if (sk_X509_NAME_find(sk, NULL, xn)) {
continue;
}
xn = X509_NAME_dup(xn);
if (xn == NULL ||
!sk_X509_NAME_push(sk /* non-owning */, xn) ||
!sk_X509_NAME_push(ret /* owning */, xn)) {
X509_NAME_free(xn);
goto err;
}
}
if (0) {
err:
sk_X509_NAME_pop_free(ret, X509_NAME_free);
ret = NULL;
}
sk_X509_NAME_free(sk);
BIO_free(in);
X509_free(x);
if (ret != NULL) {
ERR_clear_error();
}
return ret;
}
int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
const char *file) {
BIO *in;
X509 *x = NULL;
X509_NAME *xn = NULL;
int ret = 0;
int (*oldcmp)(const X509_NAME **a, const X509_NAME **b);
oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
in = BIO_new(BIO_s_file());
if (in == NULL) {
OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
goto err;
}
if (!BIO_read_filename(in, file)) {
goto err;
}
for (;;) {
if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) {
break;
}
xn = X509_get_subject_name(x);
if (xn == NULL) {
goto err;
}
// Check for duplicates.
if (sk_X509_NAME_find(stack, NULL, xn)) {
continue;
}
xn = X509_NAME_dup(xn);
if (xn == NULL ||
!sk_X509_NAME_push(stack, xn)) {
X509_NAME_free(xn);
goto err;
}
}
ERR_clear_error();
ret = 1;
err:
BIO_free(in);
X509_free(x);
(void) sk_X509_NAME_set_cmp_func(stack, oldcmp);
return ret;
}
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, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, 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_R_BAD_SSL_FILETYPE);
goto end;
}
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, reason_code);
goto end;
}
ret = SSL_use_certificate(ssl, x);
end:
X509_free(x);
BIO_free(in);
return ret;
}
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, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, 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_R_BAD_SSL_FILETYPE);
goto end;
}
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, reason_code);
goto end;
}
ret = SSL_use_RSAPrivateKey(ssl, rsa);
RSA_free(rsa);
end:
BIO_free(in);
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, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, 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_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, reason_code);
goto end;
}
ret = SSL_use_PrivateKey(ssl, pkey);
EVP_PKEY_free(pkey);
end:
BIO_free(in);
return ret;
}
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, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, 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_R_BAD_SSL_FILETYPE);
goto end;
}
if (x == NULL) {
OPENSSL_PUT_ERROR(SSL, reason_code);
goto end;
}
ret = SSL_CTX_use_certificate(ctx, x);
end:
X509_free(x);
BIO_free(in);
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, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, 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_R_BAD_SSL_FILETYPE);
goto end;
}
if (rsa == NULL) {
OPENSSL_PUT_ERROR(SSL, reason_code);
goto end;
}
ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
RSA_free(rsa);
end:
BIO_free(in);
return ret;
}
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, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, 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_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL) {
OPENSSL_PUT_ERROR(SSL, reason_code);
goto end;
}
ret = SSL_CTX_use_PrivateKey(ctx, pkey);
EVP_PKEY_free(pkey);
end:
BIO_free(in);
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, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
OPENSSL_PUT_ERROR(SSL, 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, 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;
uint32_t 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:
X509_free(x);
BIO_free(in);
return ret;
}
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) {
ctx->default_passwd_callback = cb;
}
void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *data) {
ctx->default_passwd_callback_userdata = data;
}
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