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/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER 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.
*
*/
#include "src/core/lib/security/credentials/ssl/ssl_credentials.h"
#include <string.h>
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/channel/http_client_filter.h"
#include "src/core/lib/surface/api_trace.h"
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
//
// Utils
//
static void ssl_copy_key_material(const char *input, unsigned char **output,
size_t *output_size) {
*output_size = strlen(input);
*output = gpr_malloc(*output_size);
memcpy(*output, input, *output_size);
}
//
// SSL Channel Credentials.
//
static void ssl_destruct(grpc_channel_credentials *creds) {
grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds;
if (c->config.pem_root_certs != NULL) gpr_free(c->config.pem_root_certs);
if (c->config.pem_private_key != NULL) gpr_free(c->config.pem_private_key);
if (c->config.pem_cert_chain != NULL) gpr_free(c->config.pem_cert_chain);
}
static grpc_security_status ssl_create_security_connector(
grpc_channel_credentials *creds, grpc_call_credentials *call_creds,
const char *target, const grpc_channel_args *args,
grpc_channel_security_connector **sc, grpc_channel_args **new_args) {
grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds;
grpc_security_status status = GRPC_SECURITY_OK;
size_t i = 0;
const char *overridden_target_name = NULL;
grpc_arg new_arg;
for (i = 0; args && i < args->num_args; i++) {
grpc_arg *arg = &args->args[i];
if (strcmp(arg->key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) == 0 &&
arg->type == GRPC_ARG_STRING) {
overridden_target_name = arg->value.string;
break;
}
}
status = grpc_ssl_channel_security_connector_create(
call_creds, &c->config, target, overridden_target_name, sc);
if (status != GRPC_SECURITY_OK) {
return status;
}
new_arg.type = GRPC_ARG_STRING;
new_arg.key = GRPC_ARG_HTTP2_SCHEME;
new_arg.value.string = "https";
*new_args = grpc_channel_args_copy_and_add(args, &new_arg, 1);
return status;
}
static grpc_channel_credentials_vtable ssl_vtable = {
ssl_destruct, ssl_create_security_connector, NULL};
static void ssl_build_config(const char *pem_root_certs,
grpc_ssl_pem_key_cert_pair *pem_key_cert_pair,
grpc_ssl_config *config) {
if (pem_root_certs != NULL) {
ssl_copy_key_material(pem_root_certs, &config->pem_root_certs,
&config->pem_root_certs_size);
}
if (pem_key_cert_pair != NULL) {
GPR_ASSERT(pem_key_cert_pair->private_key != NULL);
GPR_ASSERT(pem_key_cert_pair->cert_chain != NULL);
ssl_copy_key_material(pem_key_cert_pair->private_key,
&config->pem_private_key,
&config->pem_private_key_size);
ssl_copy_key_material(pem_key_cert_pair->cert_chain,
&config->pem_cert_chain,
&config->pem_cert_chain_size);
}
}
grpc_channel_credentials *grpc_ssl_credentials_create(
const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair,
void *reserved) {
grpc_ssl_credentials *c = gpr_malloc(sizeof(grpc_ssl_credentials));
GRPC_API_TRACE(
"grpc_ssl_credentials_create(pem_root_certs=%s, "
"pem_key_cert_pair=%p, "
"reserved=%p)",
3, (pem_root_certs, pem_key_cert_pair, reserved));
GPR_ASSERT(reserved == NULL);
memset(c, 0, sizeof(grpc_ssl_credentials));
c->base.type = GRPC_CHANNEL_CREDENTIALS_TYPE_SSL;
c->base.vtable = &ssl_vtable;
gpr_ref_init(&c->base.refcount, 1);
ssl_build_config(pem_root_certs, pem_key_cert_pair, &c->config);
return &c->base;
}
//
// SSL Server Credentials.
//
static void ssl_server_destruct(grpc_server_credentials *creds) {
grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds;
size_t i;
for (i = 0; i < c->config.num_key_cert_pairs; i++) {
if (c->config.pem_private_keys[i] != NULL) {
gpr_free(c->config.pem_private_keys[i]);
}
if (c->config.pem_cert_chains[i] != NULL) {
gpr_free(c->config.pem_cert_chains[i]);
}
}
if (c->config.pem_private_keys != NULL) gpr_free(c->config.pem_private_keys);
if (c->config.pem_private_keys_sizes != NULL) {
gpr_free(c->config.pem_private_keys_sizes);
}
if (c->config.pem_cert_chains != NULL) gpr_free(c->config.pem_cert_chains);
if (c->config.pem_cert_chains_sizes != NULL) {
gpr_free(c->config.pem_cert_chains_sizes);
}
if (c->config.pem_root_certs != NULL) gpr_free(c->config.pem_root_certs);
}
static grpc_security_status ssl_server_create_security_connector(
grpc_server_credentials *creds, grpc_server_security_connector **sc) {
grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds;
return grpc_ssl_server_security_connector_create(&c->config, sc);
}
static grpc_server_credentials_vtable ssl_server_vtable = {
ssl_server_destruct, ssl_server_create_security_connector};
static void ssl_build_server_config(
const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
size_t num_key_cert_pairs,
grpc_ssl_client_certificate_request_type client_certificate_request,
grpc_ssl_server_config *config) {
size_t i;
config->client_certificate_request = client_certificate_request;
if (pem_root_certs != NULL) {
ssl_copy_key_material(pem_root_certs, &config->pem_root_certs,
&config->pem_root_certs_size);
}
if (num_key_cert_pairs > 0) {
GPR_ASSERT(pem_key_cert_pairs != NULL);
config->pem_private_keys =
gpr_malloc(num_key_cert_pairs * sizeof(unsigned char *));
config->pem_cert_chains =
gpr_malloc(num_key_cert_pairs * sizeof(unsigned char *));
config->pem_private_keys_sizes =
gpr_malloc(num_key_cert_pairs * sizeof(size_t));
config->pem_cert_chains_sizes =
gpr_malloc(num_key_cert_pairs * sizeof(size_t));
}
config->num_key_cert_pairs = num_key_cert_pairs;
for (i = 0; i < num_key_cert_pairs; i++) {
GPR_ASSERT(pem_key_cert_pairs[i].private_key != NULL);
GPR_ASSERT(pem_key_cert_pairs[i].cert_chain != NULL);
ssl_copy_key_material(pem_key_cert_pairs[i].private_key,
&config->pem_private_keys[i],
&config->pem_private_keys_sizes[i]);
ssl_copy_key_material(pem_key_cert_pairs[i].cert_chain,
&config->pem_cert_chains[i],
&config->pem_cert_chains_sizes[i]);
}
}
grpc_server_credentials *grpc_ssl_server_credentials_create(
const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
size_t num_key_cert_pairs, int force_client_auth, void *reserved) {
return grpc_ssl_server_credentials_create_ex(
pem_root_certs, pem_key_cert_pairs, num_key_cert_pairs,
force_client_auth
? GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
: GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE,
reserved);
}
grpc_server_credentials *grpc_ssl_server_credentials_create_ex(
const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
size_t num_key_cert_pairs,
grpc_ssl_client_certificate_request_type client_certificate_request,
void *reserved) {
grpc_ssl_server_credentials *c =
gpr_malloc(sizeof(grpc_ssl_server_credentials));
GRPC_API_TRACE(
"grpc_ssl_server_credentials_create_ex("
"pem_root_certs=%s, pem_key_cert_pairs=%p, num_key_cert_pairs=%lu, "
"client_certificate_request=%d, reserved=%p)",
5, (pem_root_certs, pem_key_cert_pairs, (unsigned long)num_key_cert_pairs,
client_certificate_request, reserved));
GPR_ASSERT(reserved == NULL);
memset(c, 0, sizeof(grpc_ssl_server_credentials));
c->base.type = GRPC_CHANNEL_CREDENTIALS_TYPE_SSL;
gpr_ref_init(&c->base.refcount, 1);
c->base.vtable = &ssl_server_vtable;
ssl_build_server_config(pem_root_certs, pem_key_cert_pairs,
num_key_cert_pairs, client_certificate_request,
&c->config);
return &c->base;
}
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