mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
ee669781d5
This also removes the incorrect documentation comments by those functions, and fixes a bug in SSL_add_store_cert_subjects_to_stack(), where the condition for recursive addition was 'depth == 0' when it should be 'depth > 0'. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/10402)
1077 lines
29 KiB
C
1077 lines
29 KiB
C
/*
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* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include "internal/nelem.h"
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#include "internal/o_dir.h"
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#include <openssl/bio.h>
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#include <openssl/pem.h>
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#include <openssl/store.h>
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#include <openssl/x509v3.h>
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#include <openssl/dh.h>
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#include <openssl/bn.h>
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#include <openssl/crypto.h>
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#include "internal/refcount.h"
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#include "ssl_local.h"
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#include "ssl_cert_table.h"
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#include "internal/thread_once.h"
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static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
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int op, int bits, int nid, void *other,
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void *ex);
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static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
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static volatile int ssl_x509_store_ctx_idx = -1;
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DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init)
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{
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ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
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"SSL for verify callback",
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NULL, NULL, NULL);
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return ssl_x509_store_ctx_idx >= 0;
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}
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int SSL_get_ex_data_X509_STORE_CTX_idx(void)
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{
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if (!RUN_ONCE(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init))
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return -1;
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return ssl_x509_store_ctx_idx;
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}
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CERT *ssl_cert_new(void)
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{
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CERT *ret = OPENSSL_zalloc(sizeof(*ret));
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if (ret == NULL) {
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SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
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ret->references = 1;
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ret->sec_cb = ssl_security_default_callback;
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ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
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ret->sec_ex = NULL;
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ret->lock = CRYPTO_THREAD_lock_new();
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if (ret->lock == NULL) {
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SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
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OPENSSL_free(ret);
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return NULL;
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}
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return ret;
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}
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CERT *ssl_cert_dup(CERT *cert)
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{
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CERT *ret = OPENSSL_zalloc(sizeof(*ret));
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int i;
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if (ret == NULL) {
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SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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ret->references = 1;
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ret->key = &ret->pkeys[cert->key - cert->pkeys];
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ret->lock = CRYPTO_THREAD_lock_new();
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if (ret->lock == NULL) {
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SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
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OPENSSL_free(ret);
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return NULL;
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}
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#ifndef OPENSSL_NO_DH
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if (cert->dh_tmp != NULL) {
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ret->dh_tmp = cert->dh_tmp;
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EVP_PKEY_up_ref(ret->dh_tmp);
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}
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ret->dh_tmp_cb = cert->dh_tmp_cb;
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ret->dh_tmp_auto = cert->dh_tmp_auto;
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#endif
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for (i = 0; i < SSL_PKEY_NUM; i++) {
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CERT_PKEY *cpk = cert->pkeys + i;
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CERT_PKEY *rpk = ret->pkeys + i;
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if (cpk->x509 != NULL) {
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rpk->x509 = cpk->x509;
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X509_up_ref(rpk->x509);
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}
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if (cpk->privatekey != NULL) {
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rpk->privatekey = cpk->privatekey;
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EVP_PKEY_up_ref(cpk->privatekey);
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}
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if (cpk->chain) {
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rpk->chain = X509_chain_up_ref(cpk->chain);
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if (!rpk->chain) {
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SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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}
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if (cert->pkeys[i].serverinfo != NULL) {
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/* Just copy everything. */
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ret->pkeys[i].serverinfo =
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OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
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if (ret->pkeys[i].serverinfo == NULL) {
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SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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ret->pkeys[i].serverinfo_length = cert->pkeys[i].serverinfo_length;
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memcpy(ret->pkeys[i].serverinfo,
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cert->pkeys[i].serverinfo, cert->pkeys[i].serverinfo_length);
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}
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}
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/* Configured sigalgs copied across */
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if (cert->conf_sigalgs) {
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ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen
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* sizeof(*cert->conf_sigalgs));
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if (ret->conf_sigalgs == NULL)
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goto err;
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memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
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cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
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ret->conf_sigalgslen = cert->conf_sigalgslen;
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} else
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ret->conf_sigalgs = NULL;
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if (cert->client_sigalgs) {
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ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen
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* sizeof(*cert->client_sigalgs));
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if (ret->client_sigalgs == NULL)
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goto err;
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memcpy(ret->client_sigalgs, cert->client_sigalgs,
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cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
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ret->client_sigalgslen = cert->client_sigalgslen;
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} else
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ret->client_sigalgs = NULL;
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/* Copy any custom client certificate types */
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if (cert->ctype) {
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ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
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if (ret->ctype == NULL)
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goto err;
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ret->ctype_len = cert->ctype_len;
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}
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ret->cert_flags = cert->cert_flags;
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ret->cert_cb = cert->cert_cb;
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ret->cert_cb_arg = cert->cert_cb_arg;
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if (cert->verify_store) {
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X509_STORE_up_ref(cert->verify_store);
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ret->verify_store = cert->verify_store;
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}
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if (cert->chain_store) {
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X509_STORE_up_ref(cert->chain_store);
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ret->chain_store = cert->chain_store;
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}
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ret->sec_cb = cert->sec_cb;
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ret->sec_level = cert->sec_level;
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ret->sec_ex = cert->sec_ex;
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if (!custom_exts_copy(&ret->custext, &cert->custext))
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goto err;
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#ifndef OPENSSL_NO_PSK
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if (cert->psk_identity_hint) {
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ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
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if (ret->psk_identity_hint == NULL)
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goto err;
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}
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#endif
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return ret;
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err:
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ssl_cert_free(ret);
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return NULL;
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}
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/* Free up and clear all certificates and chains */
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void ssl_cert_clear_certs(CERT *c)
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{
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int i;
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if (c == NULL)
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return;
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for (i = 0; i < SSL_PKEY_NUM; i++) {
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CERT_PKEY *cpk = c->pkeys + i;
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X509_free(cpk->x509);
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cpk->x509 = NULL;
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EVP_PKEY_free(cpk->privatekey);
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cpk->privatekey = NULL;
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sk_X509_pop_free(cpk->chain, X509_free);
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cpk->chain = NULL;
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OPENSSL_free(cpk->serverinfo);
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cpk->serverinfo = NULL;
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cpk->serverinfo_length = 0;
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}
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}
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void ssl_cert_free(CERT *c)
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{
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int i;
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if (c == NULL)
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return;
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CRYPTO_DOWN_REF(&c->references, &i, c->lock);
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REF_PRINT_COUNT("CERT", c);
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if (i > 0)
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return;
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REF_ASSERT_ISNT(i < 0);
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#ifndef OPENSSL_NO_DH
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EVP_PKEY_free(c->dh_tmp);
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#endif
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ssl_cert_clear_certs(c);
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OPENSSL_free(c->conf_sigalgs);
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OPENSSL_free(c->client_sigalgs);
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OPENSSL_free(c->ctype);
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X509_STORE_free(c->verify_store);
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X509_STORE_free(c->chain_store);
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custom_exts_free(&c->custext);
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#ifndef OPENSSL_NO_PSK
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OPENSSL_free(c->psk_identity_hint);
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#endif
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CRYPTO_THREAD_lock_free(c->lock);
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OPENSSL_free(c);
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}
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int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
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{
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int i, r;
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CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
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if (!cpk)
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return 0;
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for (i = 0; i < sk_X509_num(chain); i++) {
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r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
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if (r != 1) {
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SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
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return 0;
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}
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}
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sk_X509_pop_free(cpk->chain, X509_free);
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cpk->chain = chain;
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return 1;
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}
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int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
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{
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STACK_OF(X509) *dchain;
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if (!chain)
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return ssl_cert_set0_chain(s, ctx, NULL);
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dchain = X509_chain_up_ref(chain);
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if (!dchain)
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return 0;
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if (!ssl_cert_set0_chain(s, ctx, dchain)) {
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sk_X509_pop_free(dchain, X509_free);
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return 0;
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}
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return 1;
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}
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int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
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{
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int r;
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CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
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if (!cpk)
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return 0;
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r = ssl_security_cert(s, ctx, x, 0, 0);
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if (r != 1) {
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SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
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return 0;
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}
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if (!cpk->chain)
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cpk->chain = sk_X509_new_null();
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if (!cpk->chain || !sk_X509_push(cpk->chain, x))
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return 0;
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return 1;
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}
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int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
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{
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if (!ssl_cert_add0_chain_cert(s, ctx, x))
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return 0;
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X509_up_ref(x);
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return 1;
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}
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int ssl_cert_select_current(CERT *c, X509 *x)
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{
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int i;
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if (x == NULL)
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return 0;
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for (i = 0; i < SSL_PKEY_NUM; i++) {
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CERT_PKEY *cpk = c->pkeys + i;
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if (cpk->x509 == x && cpk->privatekey) {
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c->key = cpk;
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return 1;
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}
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}
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for (i = 0; i < SSL_PKEY_NUM; i++) {
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CERT_PKEY *cpk = c->pkeys + i;
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if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
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c->key = cpk;
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return 1;
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}
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}
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return 0;
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}
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int ssl_cert_set_current(CERT *c, long op)
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{
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int i, idx;
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if (!c)
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return 0;
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if (op == SSL_CERT_SET_FIRST)
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idx = 0;
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else if (op == SSL_CERT_SET_NEXT) {
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idx = (int)(c->key - c->pkeys + 1);
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if (idx >= SSL_PKEY_NUM)
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return 0;
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} else
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return 0;
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for (i = idx; i < SSL_PKEY_NUM; i++) {
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CERT_PKEY *cpk = c->pkeys + i;
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if (cpk->x509 && cpk->privatekey) {
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c->key = cpk;
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return 1;
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}
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}
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return 0;
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}
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void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
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{
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c->cert_cb = cb;
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c->cert_cb_arg = arg;
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}
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int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
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{
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X509 *x;
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int i = 0;
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X509_STORE *verify_store;
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X509_STORE_CTX *ctx = NULL;
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X509_VERIFY_PARAM *param;
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if ((sk == NULL) || (sk_X509_num(sk) == 0))
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return 0;
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if (s->cert->verify_store)
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verify_store = s->cert->verify_store;
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else
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verify_store = s->ctx->cert_store;
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ctx = X509_STORE_CTX_new();
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if (ctx == NULL) {
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SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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x = sk_X509_value(sk, 0);
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if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
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SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
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goto end;
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}
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param = X509_STORE_CTX_get0_param(ctx);
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/*
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* XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
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* point, for now a single @SECLEVEL sets the same policy for TLS crypto
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* and PKI authentication.
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*/
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X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
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/* Set suite B flags if needed */
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X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
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if (!X509_STORE_CTX_set_ex_data
|
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(ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
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goto end;
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}
|
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|
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/* Verify via DANE if enabled */
|
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if (DANETLS_ENABLED(&s->dane))
|
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X509_STORE_CTX_set0_dane(ctx, &s->dane);
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|
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/*
|
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* We need to inherit the verify parameters. These can be determined by
|
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* the context: if its a server it will verify SSL client certificates or
|
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* vice versa.
|
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*/
|
|
|
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X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
|
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/*
|
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* Anything non-default in "s->param" should overwrite anything in the ctx.
|
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*/
|
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X509_VERIFY_PARAM_set1(param, s->param);
|
|
|
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if (s->verify_callback)
|
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X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
|
|
|
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if (s->ctx->app_verify_callback != NULL)
|
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i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
|
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else
|
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i = X509_verify_cert(ctx);
|
|
|
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s->verify_result = X509_STORE_CTX_get_error(ctx);
|
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sk_X509_pop_free(s->verified_chain, X509_free);
|
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s->verified_chain = NULL;
|
|
if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
|
|
s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
|
|
if (s->verified_chain == NULL) {
|
|
SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
|
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i = 0;
|
|
}
|
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}
|
|
|
|
/* Move peername from the store context params to the SSL handle's */
|
|
X509_VERIFY_PARAM_move_peername(s->param, param);
|
|
|
|
end:
|
|
X509_STORE_CTX_free(ctx);
|
|
return i;
|
|
}
|
|
|
|
static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
|
|
STACK_OF(X509_NAME) *name_list)
|
|
{
|
|
sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
|
|
*ca_list = name_list;
|
|
}
|
|
|
|
STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
|
|
{
|
|
int i;
|
|
const int num = sk_X509_NAME_num(sk);
|
|
STACK_OF(X509_NAME) *ret;
|
|
X509_NAME *name;
|
|
|
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ret = sk_X509_NAME_new_reserve(NULL, num);
|
|
if (ret == NULL) {
|
|
SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < num; i++) {
|
|
name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
|
|
if (name == NULL) {
|
|
SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
|
|
sk_X509_NAME_pop_free(ret, X509_NAME_free);
|
|
return NULL;
|
|
}
|
|
sk_X509_NAME_push(ret, name); /* Cannot fail after reserve call */
|
|
}
|
|
return ret;
|
|
}
|
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|
|
void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
|
|
{
|
|
set0_CA_list(&s->ca_names, name_list);
|
|
}
|
|
|
|
void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
|
|
{
|
|
set0_CA_list(&ctx->ca_names, name_list);
|
|
}
|
|
|
|
const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
|
|
{
|
|
return ctx->ca_names;
|
|
}
|
|
|
|
const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
|
|
{
|
|
return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
|
|
}
|
|
|
|
void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
|
|
{
|
|
set0_CA_list(&ctx->client_ca_names, name_list);
|
|
}
|
|
|
|
STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
|
|
{
|
|
return ctx->client_ca_names;
|
|
}
|
|
|
|
void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
|
|
{
|
|
set0_CA_list(&s->client_ca_names, name_list);
|
|
}
|
|
|
|
const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
|
|
{
|
|
return s->s3.tmp.peer_ca_names;
|
|
}
|
|
|
|
STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
|
|
{
|
|
if (!s->server)
|
|
return s->s3.tmp.peer_ca_names;
|
|
return s->client_ca_names != NULL ? s->client_ca_names
|
|
: s->ctx->client_ca_names;
|
|
}
|
|
|
|
static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
|
|
{
|
|
X509_NAME *name;
|
|
|
|
if (x == NULL)
|
|
return 0;
|
|
if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
|
|
return 0;
|
|
|
|
if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
|
|
return 0;
|
|
|
|
if (!sk_X509_NAME_push(*sk, name)) {
|
|
X509_NAME_free(name);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int SSL_add1_to_CA_list(SSL *ssl, const X509 *x)
|
|
{
|
|
return add_ca_name(&ssl->ca_names, x);
|
|
}
|
|
|
|
int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x)
|
|
{
|
|
return add_ca_name(&ctx->ca_names, x);
|
|
}
|
|
|
|
/*
|
|
* The following two are older names are to be replaced with
|
|
* SSL(_CTX)_add1_to_CA_list
|
|
*/
|
|
int SSL_add_client_CA(SSL *ssl, X509 *x)
|
|
{
|
|
return add_ca_name(&ssl->client_ca_names, x);
|
|
}
|
|
|
|
int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
|
|
{
|
|
return add_ca_name(&ctx->client_ca_names, x);
|
|
}
|
|
|
|
static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
|
|
{
|
|
unsigned char *abuf = NULL, *bbuf = NULL;
|
|
int alen, blen, ret;
|
|
|
|
/* X509_NAME_cmp() itself casts away constness in this way, so
|
|
* assume it's safe:
|
|
*/
|
|
alen = i2d_X509_NAME((X509_NAME *)a, &abuf);
|
|
blen = i2d_X509_NAME((X509_NAME *)b, &bbuf);
|
|
|
|
if (alen < 0 || blen < 0)
|
|
ret = -2;
|
|
else if (alen != blen)
|
|
ret = alen - blen;
|
|
else /* alen == blen */
|
|
ret = memcmp(abuf, bbuf, alen);
|
|
|
|
OPENSSL_free(abuf);
|
|
OPENSSL_free(bbuf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
|
|
{
|
|
return xname_cmp(*a, *b);
|
|
}
|
|
|
|
static unsigned long xname_hash(const X509_NAME *a)
|
|
{
|
|
return X509_NAME_hash((X509_NAME *)a);
|
|
}
|
|
|
|
STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
|
|
{
|
|
BIO *in = BIO_new(BIO_s_file());
|
|
X509 *x = NULL;
|
|
X509_NAME *xn = NULL;
|
|
STACK_OF(X509_NAME) *ret = NULL;
|
|
LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
|
|
|
|
if ((name_hash == NULL) || (in == NULL)) {
|
|
SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, 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) {
|
|
SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
}
|
|
if ((xn = X509_get_subject_name(x)) == NULL)
|
|
goto err;
|
|
/* check for duplicates */
|
|
xn = X509_NAME_dup(xn);
|
|
if (xn == NULL)
|
|
goto err;
|
|
if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
|
|
/* Duplicate. */
|
|
X509_NAME_free(xn);
|
|
xn = NULL;
|
|
} else {
|
|
lh_X509_NAME_insert(name_hash, xn);
|
|
if (!sk_X509_NAME_push(ret, xn))
|
|
goto err;
|
|
}
|
|
}
|
|
goto done;
|
|
|
|
err:
|
|
X509_NAME_free(xn);
|
|
sk_X509_NAME_pop_free(ret, X509_NAME_free);
|
|
ret = NULL;
|
|
done:
|
|
BIO_free(in);
|
|
X509_free(x);
|
|
lh_X509_NAME_free(name_hash);
|
|
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 = 1;
|
|
int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
|
|
|
|
oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
|
|
|
|
in = BIO_new(BIO_s_file());
|
|
|
|
if (in == NULL) {
|
|
SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, 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 ((xn = X509_get_subject_name(x)) == NULL)
|
|
goto err;
|
|
xn = X509_NAME_dup(xn);
|
|
if (xn == NULL)
|
|
goto err;
|
|
if (sk_X509_NAME_find(stack, xn) >= 0) {
|
|
/* Duplicate. */
|
|
X509_NAME_free(xn);
|
|
} else if (!sk_X509_NAME_push(stack, xn)) {
|
|
X509_NAME_free(xn);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
ERR_clear_error();
|
|
goto done;
|
|
|
|
err:
|
|
ret = 0;
|
|
done:
|
|
BIO_free(in);
|
|
X509_free(x);
|
|
(void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
|
|
return ret;
|
|
}
|
|
|
|
int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
|
|
const char *dir)
|
|
{
|
|
OPENSSL_DIR_CTX *d = NULL;
|
|
const char *filename;
|
|
int ret = 0;
|
|
|
|
/* Note that a side effect is that the CAs will be sorted by name */
|
|
|
|
while ((filename = OPENSSL_DIR_read(&d, dir))) {
|
|
char buf[1024];
|
|
int r;
|
|
|
|
if (strlen(dir) + strlen(filename) + 2 > sizeof(buf)) {
|
|
SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
|
|
SSL_R_PATH_TOO_LONG);
|
|
goto err;
|
|
}
|
|
#ifdef OPENSSL_SYS_VMS
|
|
r = BIO_snprintf(buf, sizeof(buf), "%s%s", dir, filename);
|
|
#else
|
|
r = BIO_snprintf(buf, sizeof(buf), "%s/%s", dir, filename);
|
|
#endif
|
|
if (r <= 0 || r >= (int)sizeof(buf))
|
|
goto err;
|
|
if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
|
|
goto err;
|
|
}
|
|
|
|
if (errno) {
|
|
ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
|
|
"calling OPENSSL_dir_read(%s)",
|
|
dir);
|
|
SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
|
|
goto err;
|
|
}
|
|
|
|
ret = 1;
|
|
|
|
err:
|
|
if (d)
|
|
OPENSSL_DIR_end(&d);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int add_uris_recursive(STACK_OF(X509_NAME) *stack,
|
|
const char *uri, int depth)
|
|
{
|
|
int ok = 1;
|
|
OSSL_STORE_CTX *ctx = NULL;
|
|
X509 *x = NULL;
|
|
X509_NAME *xn = NULL;
|
|
|
|
if ((ctx = OSSL_STORE_open(uri, NULL, NULL, NULL, NULL)) == NULL)
|
|
goto err;
|
|
|
|
while (!OSSL_STORE_eof(ctx) && !OSSL_STORE_error(ctx)) {
|
|
OSSL_STORE_INFO *info = OSSL_STORE_load(ctx);
|
|
int infotype = info == 0 ? 0 : OSSL_STORE_INFO_get_type(info);
|
|
|
|
if (info == NULL)
|
|
continue;
|
|
|
|
if (infotype == OSSL_STORE_INFO_NAME) {
|
|
/*
|
|
* This is an entry in the "directory" represented by the current
|
|
* uri. if |depth| allows, dive into it.
|
|
*/
|
|
if (depth > 0)
|
|
ok = add_uris_recursive(stack, OSSL_STORE_INFO_get0_NAME(info),
|
|
depth - 1);
|
|
} else if (infotype == OSSL_STORE_INFO_CERT) {
|
|
if ((x = OSSL_STORE_INFO_get0_CERT(info)) == NULL
|
|
|| (xn = X509_get_subject_name(x)) == NULL
|
|
|| (xn = X509_NAME_dup(xn)) == NULL)
|
|
goto err;
|
|
if (sk_X509_NAME_find(stack, xn) >= 0) {
|
|
/* Duplicate. */
|
|
X509_NAME_free(xn);
|
|
} else if (!sk_X509_NAME_push(stack, xn)) {
|
|
X509_NAME_free(xn);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
OSSL_STORE_INFO_free(info);
|
|
}
|
|
|
|
ERR_clear_error();
|
|
goto done;
|
|
|
|
err:
|
|
ok = 0;
|
|
done:
|
|
OSSL_STORE_close(ctx);
|
|
|
|
return ok;
|
|
}
|
|
|
|
int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
|
|
const char *store)
|
|
{
|
|
int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b)
|
|
= sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
|
|
int ret = add_uris_recursive(stack, store, 1);
|
|
|
|
(void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
|
|
return ret;
|
|
}
|
|
|
|
/* Build a certificate chain for current certificate */
|
|
int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
|
|
{
|
|
CERT *c = s ? s->cert : ctx->cert;
|
|
CERT_PKEY *cpk = c->key;
|
|
X509_STORE *chain_store = NULL;
|
|
X509_STORE_CTX *xs_ctx = NULL;
|
|
STACK_OF(X509) *chain = NULL, *untrusted = NULL;
|
|
X509 *x;
|
|
int i, rv = 0;
|
|
|
|
if (!cpk->x509) {
|
|
SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
|
|
goto err;
|
|
}
|
|
/* Rearranging and check the chain: add everything to a store */
|
|
if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
|
|
chain_store = X509_STORE_new();
|
|
if (chain_store == NULL)
|
|
goto err;
|
|
for (i = 0; i < sk_X509_num(cpk->chain); i++) {
|
|
x = sk_X509_value(cpk->chain, i);
|
|
if (!X509_STORE_add_cert(chain_store, x))
|
|
goto err;
|
|
}
|
|
/* Add EE cert too: it might be self signed */
|
|
if (!X509_STORE_add_cert(chain_store, cpk->x509))
|
|
goto err;
|
|
} else {
|
|
if (c->chain_store)
|
|
chain_store = c->chain_store;
|
|
else if (s)
|
|
chain_store = s->ctx->cert_store;
|
|
else
|
|
chain_store = ctx->cert_store;
|
|
|
|
if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
|
|
untrusted = cpk->chain;
|
|
}
|
|
|
|
xs_ctx = X509_STORE_CTX_new();
|
|
if (xs_ctx == NULL) {
|
|
SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
|
|
SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
|
|
goto err;
|
|
}
|
|
/* Set suite B flags if needed */
|
|
X509_STORE_CTX_set_flags(xs_ctx,
|
|
c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
|
|
|
|
i = X509_verify_cert(xs_ctx);
|
|
if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
|
|
if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
|
|
ERR_clear_error();
|
|
i = 1;
|
|
rv = 2;
|
|
}
|
|
if (i > 0)
|
|
chain = X509_STORE_CTX_get1_chain(xs_ctx);
|
|
if (i <= 0) {
|
|
SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
|
|
i = X509_STORE_CTX_get_error(xs_ctx);
|
|
ERR_add_error_data(2, "Verify error:",
|
|
X509_verify_cert_error_string(i));
|
|
|
|
goto err;
|
|
}
|
|
/* Remove EE certificate from chain */
|
|
x = sk_X509_shift(chain);
|
|
X509_free(x);
|
|
if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
|
|
if (sk_X509_num(chain) > 0) {
|
|
/* See if last cert is self signed */
|
|
x = sk_X509_value(chain, sk_X509_num(chain) - 1);
|
|
if (X509_get_extension_flags(x) & EXFLAG_SS) {
|
|
x = sk_X509_pop(chain);
|
|
X509_free(x);
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* Check security level of all CA certificates: EE will have been checked
|
|
* already.
|
|
*/
|
|
for (i = 0; i < sk_X509_num(chain); i++) {
|
|
x = sk_X509_value(chain, i);
|
|
rv = ssl_security_cert(s, ctx, x, 0, 0);
|
|
if (rv != 1) {
|
|
SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
|
|
sk_X509_pop_free(chain, X509_free);
|
|
rv = 0;
|
|
goto err;
|
|
}
|
|
}
|
|
sk_X509_pop_free(cpk->chain, X509_free);
|
|
cpk->chain = chain;
|
|
if (rv == 0)
|
|
rv = 1;
|
|
err:
|
|
if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
|
|
X509_STORE_free(chain_store);
|
|
X509_STORE_CTX_free(xs_ctx);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
|
|
{
|
|
X509_STORE **pstore;
|
|
if (chain)
|
|
pstore = &c->chain_store;
|
|
else
|
|
pstore = &c->verify_store;
|
|
X509_STORE_free(*pstore);
|
|
*pstore = store;
|
|
if (ref && store)
|
|
X509_STORE_up_ref(store);
|
|
return 1;
|
|
}
|
|
|
|
static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
|
|
int op, int bits, int nid, void *other,
|
|
void *ex)
|
|
{
|
|
int level, minbits;
|
|
static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
|
|
if (ctx)
|
|
level = SSL_CTX_get_security_level(ctx);
|
|
else
|
|
level = SSL_get_security_level(s);
|
|
|
|
if (level <= 0) {
|
|
/*
|
|
* No EDH keys weaker than 1024-bits even at level 0, otherwise,
|
|
* anything goes.
|
|
*/
|
|
if (op == SSL_SECOP_TMP_DH && bits < 80)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
if (level > 5)
|
|
level = 5;
|
|
minbits = minbits_table[level - 1];
|
|
switch (op) {
|
|
case SSL_SECOP_CIPHER_SUPPORTED:
|
|
case SSL_SECOP_CIPHER_SHARED:
|
|
case SSL_SECOP_CIPHER_CHECK:
|
|
{
|
|
const SSL_CIPHER *c = other;
|
|
/* No ciphers below security level */
|
|
if (bits < minbits)
|
|
return 0;
|
|
/* No unauthenticated ciphersuites */
|
|
if (c->algorithm_auth & SSL_aNULL)
|
|
return 0;
|
|
/* No MD5 mac ciphersuites */
|
|
if (c->algorithm_mac & SSL_MD5)
|
|
return 0;
|
|
/* SHA1 HMAC is 160 bits of security */
|
|
if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
|
|
return 0;
|
|
/* Level 2: no RC4 */
|
|
if (level >= 2 && c->algorithm_enc == SSL_RC4)
|
|
return 0;
|
|
/* Level 3: forward secure ciphersuites only */
|
|
if (level >= 3 && c->min_tls != TLS1_3_VERSION &&
|
|
!(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
|
|
return 0;
|
|
break;
|
|
}
|
|
case SSL_SECOP_VERSION:
|
|
if (!SSL_IS_DTLS(s)) {
|
|
/* SSLv3 not allowed at level 2 */
|
|
if (nid <= SSL3_VERSION && level >= 2)
|
|
return 0;
|
|
/* TLS v1.1 and above only for level 3 */
|
|
if (nid <= TLS1_VERSION && level >= 3)
|
|
return 0;
|
|
/* TLS v1.2 only for level 4 and above */
|
|
if (nid <= TLS1_1_VERSION && level >= 4)
|
|
return 0;
|
|
} else {
|
|
/* DTLS v1.2 only for level 4 and above */
|
|
if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
|
|
return 0;
|
|
}
|
|
break;
|
|
|
|
case SSL_SECOP_COMPRESSION:
|
|
if (level >= 2)
|
|
return 0;
|
|
break;
|
|
case SSL_SECOP_TICKET:
|
|
if (level >= 3)
|
|
return 0;
|
|
break;
|
|
default:
|
|
if (bits < minbits)
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
|
|
{
|
|
return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
|
|
}
|
|
|
|
int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
|
|
{
|
|
return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
|
|
ctx->cert->sec_ex);
|
|
}
|
|
|
|
int ssl_cert_lookup_by_nid(int nid, size_t *pidx)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
|
|
if (ssl_cert_info[i].nid == nid) {
|
|
*pidx = i;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx)
|
|
{
|
|
int nid = EVP_PKEY_id(pk);
|
|
size_t tmpidx;
|
|
|
|
if (nid == NID_undef)
|
|
return NULL;
|
|
|
|
if (!ssl_cert_lookup_by_nid(nid, &tmpidx))
|
|
return NULL;
|
|
|
|
if (pidx != NULL)
|
|
*pidx = tmpidx;
|
|
|
|
return &ssl_cert_info[tmpidx];
|
|
}
|
|
|
|
const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
|
|
{
|
|
if (idx >= OSSL_NELEM(ssl_cert_info))
|
|
return NULL;
|
|
return &ssl_cert_info[idx];
|
|
}
|