| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include "src/core/lib/security/transport/security_connector.h" |
| |
| #include <stdbool.h> |
| #include <string.h> |
| |
| #include <grpc/slice_buffer.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/host_port.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/ext/transport/chttp2/alpn/alpn.h" |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/channel/handshaker.h" |
| #include "src/core/lib/gpr/env.h" |
| #include "src/core/lib/gpr/string.h" |
| #include "src/core/lib/iomgr/load_file.h" |
| #include "src/core/lib/security/context/security_context.h" |
| #include "src/core/lib/security/credentials/credentials.h" |
| #include "src/core/lib/security/credentials/fake/fake_credentials.h" |
| #include "src/core/lib/security/credentials/ssl/ssl_credentials.h" |
| #include "src/core/lib/security/transport/lb_targets_info.h" |
| #include "src/core/lib/security/transport/secure_endpoint.h" |
| #include "src/core/lib/security/transport/security_handshaker.h" |
| #include "src/core/tsi/fake_transport_security.h" |
| #include "src/core/tsi/ssl_transport_security.h" |
| #include "src/core/tsi/transport_security_adapter.h" |
| |
| grpc_core::DebugOnlyTraceFlag grpc_trace_security_connector_refcount( |
| false, "security_connector_refcount"); |
| |
| /* -- Constants. -- */ |
| |
| #ifndef INSTALL_PREFIX |
| static const char* installed_roots_path = "/usr/share/grpc/roots.pem"; |
| #else |
| static const char* installed_roots_path = |
| INSTALL_PREFIX "/share/grpc/roots.pem"; |
| #endif |
| |
| /* -- Overridden default roots. -- */ |
| |
| static grpc_ssl_roots_override_callback ssl_roots_override_cb = nullptr; |
| |
| void grpc_set_ssl_roots_override_callback(grpc_ssl_roots_override_callback cb) { |
| ssl_roots_override_cb = cb; |
| } |
| |
| /* -- Cipher suites. -- */ |
| |
| /* Defines the cipher suites that we accept by default. All these cipher suites |
| are compliant with HTTP2. */ |
| #define GRPC_SSL_CIPHER_SUITES \ |
| "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384" |
| |
| static gpr_once cipher_suites_once = GPR_ONCE_INIT; |
| static const char* cipher_suites = nullptr; |
| |
| static void init_cipher_suites(void) { |
| char* overridden = gpr_getenv("GRPC_SSL_CIPHER_SUITES"); |
| cipher_suites = overridden != nullptr ? overridden : GRPC_SSL_CIPHER_SUITES; |
| } |
| |
| static const char* ssl_cipher_suites(void) { |
| gpr_once_init(&cipher_suites_once, init_cipher_suites); |
| return cipher_suites; |
| } |
| |
| /* -- Common methods. -- */ |
| |
| /* Returns the first property with that name. */ |
| const tsi_peer_property* tsi_peer_get_property_by_name(const tsi_peer* peer, |
| const char* name) { |
| size_t i; |
| if (peer == nullptr) return nullptr; |
| for (i = 0; i < peer->property_count; i++) { |
| const tsi_peer_property* property = &peer->properties[i]; |
| if (name == nullptr && property->name == nullptr) { |
| return property; |
| } |
| if (name != nullptr && property->name != nullptr && |
| strcmp(property->name, name) == 0) { |
| return property; |
| } |
| } |
| return nullptr; |
| } |
| |
| void grpc_channel_security_connector_add_handshakers( |
| grpc_channel_security_connector* connector, |
| grpc_handshake_manager* handshake_mgr) { |
| if (connector != nullptr) { |
| connector->add_handshakers(connector, handshake_mgr); |
| } |
| } |
| |
| void grpc_server_security_connector_add_handshakers( |
| grpc_server_security_connector* connector, |
| grpc_handshake_manager* handshake_mgr) { |
| if (connector != nullptr) { |
| connector->add_handshakers(connector, handshake_mgr); |
| } |
| } |
| |
| void grpc_security_connector_check_peer(grpc_security_connector* sc, |
| tsi_peer peer, |
| grpc_auth_context** auth_context, |
| grpc_closure* on_peer_checked) { |
| if (sc == nullptr) { |
| GRPC_CLOSURE_SCHED(on_peer_checked, |
| GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
| "cannot check peer -- no security connector")); |
| tsi_peer_destruct(&peer); |
| } else { |
| sc->vtable->check_peer(sc, peer, auth_context, on_peer_checked); |
| } |
| } |
| |
| int grpc_security_connector_cmp(grpc_security_connector* sc, |
| grpc_security_connector* other) { |
| if (sc == nullptr || other == nullptr) return GPR_ICMP(sc, other); |
| int c = GPR_ICMP(sc->vtable, other->vtable); |
| if (c != 0) return c; |
| return sc->vtable->cmp(sc, other); |
| } |
| |
| int grpc_channel_security_connector_cmp(grpc_channel_security_connector* sc1, |
| grpc_channel_security_connector* sc2) { |
| GPR_ASSERT(sc1->channel_creds != nullptr); |
| GPR_ASSERT(sc2->channel_creds != nullptr); |
| int c = GPR_ICMP(sc1->channel_creds, sc2->channel_creds); |
| if (c != 0) return c; |
| c = GPR_ICMP(sc1->request_metadata_creds, sc2->request_metadata_creds); |
| if (c != 0) return c; |
| c = GPR_ICMP((void*)sc1->check_call_host, (void*)sc2->check_call_host); |
| if (c != 0) return c; |
| c = GPR_ICMP((void*)sc1->cancel_check_call_host, |
| (void*)sc2->cancel_check_call_host); |
| if (c != 0) return c; |
| return GPR_ICMP((void*)sc1->add_handshakers, (void*)sc2->add_handshakers); |
| } |
| |
| int grpc_server_security_connector_cmp(grpc_server_security_connector* sc1, |
| grpc_server_security_connector* sc2) { |
| GPR_ASSERT(sc1->server_creds != nullptr); |
| GPR_ASSERT(sc2->server_creds != nullptr); |
| int c = GPR_ICMP(sc1->server_creds, sc2->server_creds); |
| if (c != 0) return c; |
| return GPR_ICMP((void*)sc1->add_handshakers, (void*)sc2->add_handshakers); |
| } |
| |
| bool grpc_channel_security_connector_check_call_host( |
| grpc_channel_security_connector* sc, const char* host, |
| grpc_auth_context* auth_context, grpc_closure* on_call_host_checked, |
| grpc_error** error) { |
| if (sc == nullptr || sc->check_call_host == nullptr) { |
| *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
| "cannot check call host -- no security connector"); |
| return true; |
| } |
| return sc->check_call_host(sc, host, auth_context, on_call_host_checked, |
| error); |
| } |
| |
| void grpc_channel_security_connector_cancel_check_call_host( |
| grpc_channel_security_connector* sc, grpc_closure* on_call_host_checked, |
| grpc_error* error) { |
| if (sc == nullptr || sc->cancel_check_call_host == nullptr) { |
| GRPC_ERROR_UNREF(error); |
| return; |
| } |
| sc->cancel_check_call_host(sc, on_call_host_checked, error); |
| } |
| |
| #ifndef NDEBUG |
| grpc_security_connector* grpc_security_connector_ref( |
| grpc_security_connector* sc, const char* file, int line, |
| const char* reason) { |
| if (sc == nullptr) return nullptr; |
| if (grpc_trace_security_connector_refcount.enabled()) { |
| gpr_atm val = gpr_atm_no_barrier_load(&sc->refcount.count); |
| gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, |
| "SECURITY_CONNECTOR:%p ref %" PRIdPTR " -> %" PRIdPTR " %s", sc, |
| val, val + 1, reason); |
| } |
| #else |
| grpc_security_connector* grpc_security_connector_ref( |
| grpc_security_connector* sc) { |
| if (sc == nullptr) return nullptr; |
| #endif |
| gpr_ref(&sc->refcount); |
| return sc; |
| } |
| |
| #ifndef NDEBUG |
| void grpc_security_connector_unref(grpc_security_connector* sc, |
| const char* file, int line, |
| const char* reason) { |
| if (sc == nullptr) return; |
| if (grpc_trace_security_connector_refcount.enabled()) { |
| gpr_atm val = gpr_atm_no_barrier_load(&sc->refcount.count); |
| gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, |
| "SECURITY_CONNECTOR:%p unref %" PRIdPTR " -> %" PRIdPTR " %s", sc, |
| val, val - 1, reason); |
| } |
| #else |
| void grpc_security_connector_unref(grpc_security_connector* sc) { |
| if (sc == nullptr) return; |
| #endif |
| if (gpr_unref(&sc->refcount)) sc->vtable->destroy(sc); |
| } |
| |
| static void connector_arg_destroy(void* p) { |
| GRPC_SECURITY_CONNECTOR_UNREF((grpc_security_connector*)p, |
| "connector_arg_destroy"); |
| } |
| |
| static void* connector_arg_copy(void* p) { |
| return GRPC_SECURITY_CONNECTOR_REF((grpc_security_connector*)p, |
| "connector_arg_copy"); |
| } |
| |
| static int connector_cmp(void* a, void* b) { |
| return grpc_security_connector_cmp((grpc_security_connector*)a, |
| (grpc_security_connector*)b); |
| } |
| |
| static const grpc_arg_pointer_vtable connector_arg_vtable = { |
| connector_arg_copy, connector_arg_destroy, connector_cmp}; |
| |
| grpc_arg grpc_security_connector_to_arg(grpc_security_connector* sc) { |
| return grpc_channel_arg_pointer_create((char*)GRPC_ARG_SECURITY_CONNECTOR, sc, |
| &connector_arg_vtable); |
| } |
| |
| grpc_security_connector* grpc_security_connector_from_arg(const grpc_arg* arg) { |
| if (strcmp(arg->key, GRPC_ARG_SECURITY_CONNECTOR)) return nullptr; |
| if (arg->type != GRPC_ARG_POINTER) { |
| gpr_log(GPR_ERROR, "Invalid type %d for arg %s", arg->type, |
| GRPC_ARG_SECURITY_CONNECTOR); |
| return nullptr; |
| } |
| return (grpc_security_connector*)arg->value.pointer.p; |
| } |
| |
| grpc_security_connector* grpc_security_connector_find_in_args( |
| const grpc_channel_args* args) { |
| size_t i; |
| if (args == nullptr) return nullptr; |
| for (i = 0; i < args->num_args; i++) { |
| grpc_security_connector* sc = |
| grpc_security_connector_from_arg(&args->args[i]); |
| if (sc != nullptr) return sc; |
| } |
| return nullptr; |
| } |
| |
| static tsi_client_certificate_request_type |
| get_tsi_client_certificate_request_type( |
| grpc_ssl_client_certificate_request_type grpc_request_type) { |
| switch (grpc_request_type) { |
| case GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE: |
| return TSI_DONT_REQUEST_CLIENT_CERTIFICATE; |
| |
| case GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY: |
| return TSI_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY; |
| |
| case GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY: |
| return TSI_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY; |
| |
| case GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY: |
| return TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY; |
| |
| case GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY: |
| return TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY; |
| |
| default: |
| return TSI_DONT_REQUEST_CLIENT_CERTIFICATE; |
| } |
| } |
| |
| /* -- Fake implementation. -- */ |
| |
| typedef struct { |
| grpc_channel_security_connector base; |
| char* target; |
| char* expected_targets; |
| bool is_lb_channel; |
| } grpc_fake_channel_security_connector; |
| |
| static void fake_channel_destroy(grpc_security_connector* sc) { |
| grpc_fake_channel_security_connector* c = |
| (grpc_fake_channel_security_connector*)sc; |
| grpc_call_credentials_unref(c->base.request_metadata_creds); |
| gpr_free(c->target); |
| gpr_free(c->expected_targets); |
| gpr_free(c); |
| } |
| |
| static void fake_server_destroy(grpc_security_connector* sc) { gpr_free(sc); } |
| |
| static bool fake_check_target(const char* target_type, const char* target, |
| const char* set_str) { |
| GPR_ASSERT(target_type != nullptr); |
| GPR_ASSERT(target != nullptr); |
| char** set = nullptr; |
| size_t set_size = 0; |
| gpr_string_split(set_str, ",", &set, &set_size); |
| bool found = false; |
| for (size_t i = 0; i < set_size; ++i) { |
| if (set[i] != nullptr && strcmp(target, set[i]) == 0) found = true; |
| } |
| for (size_t i = 0; i < set_size; ++i) { |
| gpr_free(set[i]); |
| } |
| gpr_free(set); |
| return found; |
| } |
| |
| static void fake_secure_name_check(const char* target, |
| const char* expected_targets, |
| bool is_lb_channel) { |
| if (expected_targets == nullptr) return; |
| char** lbs_and_backends = nullptr; |
| size_t lbs_and_backends_size = 0; |
| bool success = false; |
| gpr_string_split(expected_targets, ";", &lbs_and_backends, |
| &lbs_and_backends_size); |
| if (lbs_and_backends_size > 2 || lbs_and_backends_size == 0) { |
| gpr_log(GPR_ERROR, "Invalid expected targets arg value: '%s'", |
| expected_targets); |
| goto done; |
| } |
| if (is_lb_channel) { |
| if (lbs_and_backends_size != 2) { |
| gpr_log(GPR_ERROR, |
| "Invalid expected targets arg value: '%s'. Expectations for LB " |
| "channels must be of the form 'be1,be2,be3,...;lb1,lb2,...", |
| expected_targets); |
| goto done; |
| } |
| if (!fake_check_target("LB", target, lbs_and_backends[1])) { |
| gpr_log(GPR_ERROR, "LB target '%s' not found in expected set '%s'", |
| target, lbs_and_backends[1]); |
| goto done; |
| } |
| success = true; |
| } else { |
| if (!fake_check_target("Backend", target, lbs_and_backends[0])) { |
| gpr_log(GPR_ERROR, "Backend target '%s' not found in expected set '%s'", |
| target, lbs_and_backends[0]); |
| goto done; |
| } |
| success = true; |
| } |
| done: |
| for (size_t i = 0; i < lbs_and_backends_size; ++i) { |
| gpr_free(lbs_and_backends[i]); |
| } |
| gpr_free(lbs_and_backends); |
| if (!success) abort(); |
| } |
| |
| static void fake_check_peer(grpc_security_connector* sc, tsi_peer peer, |
| grpc_auth_context** auth_context, |
| grpc_closure* on_peer_checked) { |
| const char* prop_name; |
| grpc_error* error = GRPC_ERROR_NONE; |
| *auth_context = nullptr; |
| if (peer.property_count != 1) { |
| error = GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
| "Fake peers should only have 1 property."); |
| goto end; |
| } |
| prop_name = peer.properties[0].name; |
| if (prop_name == nullptr || |
| strcmp(prop_name, TSI_CERTIFICATE_TYPE_PEER_PROPERTY)) { |
| char* msg; |
| gpr_asprintf(&msg, "Unexpected property in fake peer: %s.", |
| prop_name == nullptr ? "<EMPTY>" : prop_name); |
| error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg); |
| gpr_free(msg); |
| goto end; |
| } |
| if (strncmp(peer.properties[0].value.data, TSI_FAKE_CERTIFICATE_TYPE, |
| peer.properties[0].value.length)) { |
| error = GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
| "Invalid value for cert type property."); |
| goto end; |
| } |
| *auth_context = grpc_auth_context_create(nullptr); |
| grpc_auth_context_add_cstring_property( |
| *auth_context, GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME, |
| GRPC_FAKE_TRANSPORT_SECURITY_TYPE); |
| end: |
| GRPC_CLOSURE_SCHED(on_peer_checked, error); |
| tsi_peer_destruct(&peer); |
| } |
| |
| static void fake_channel_check_peer(grpc_security_connector* sc, tsi_peer peer, |
| grpc_auth_context** auth_context, |
| grpc_closure* on_peer_checked) { |
| fake_check_peer(sc, peer, auth_context, on_peer_checked); |
| grpc_fake_channel_security_connector* c = |
| (grpc_fake_channel_security_connector*)sc; |
| fake_secure_name_check(c->target, c->expected_targets, c->is_lb_channel); |
| } |
| |
| static void fake_server_check_peer(grpc_security_connector* sc, tsi_peer peer, |
| grpc_auth_context** auth_context, |
| grpc_closure* on_peer_checked) { |
| fake_check_peer(sc, peer, auth_context, on_peer_checked); |
| } |
| |
| static int fake_channel_cmp(grpc_security_connector* sc1, |
| grpc_security_connector* sc2) { |
| grpc_fake_channel_security_connector* c1 = |
| (grpc_fake_channel_security_connector*)sc1; |
| grpc_fake_channel_security_connector* c2 = |
| (grpc_fake_channel_security_connector*)sc2; |
| int c = grpc_channel_security_connector_cmp(&c1->base, &c2->base); |
| if (c != 0) return c; |
| c = strcmp(c1->target, c2->target); |
| if (c != 0) return c; |
| if (c1->expected_targets == nullptr || c2->expected_targets == nullptr) { |
| c = GPR_ICMP(c1->expected_targets, c2->expected_targets); |
| } else { |
| c = strcmp(c1->expected_targets, c2->expected_targets); |
| } |
| if (c != 0) return c; |
| return GPR_ICMP(c1->is_lb_channel, c2->is_lb_channel); |
| } |
| |
| static int fake_server_cmp(grpc_security_connector* sc1, |
| grpc_security_connector* sc2) { |
| return grpc_server_security_connector_cmp( |
| (grpc_server_security_connector*)sc1, |
| (grpc_server_security_connector*)sc2); |
| } |
| |
| static bool fake_channel_check_call_host(grpc_channel_security_connector* sc, |
| const char* host, |
| grpc_auth_context* auth_context, |
| grpc_closure* on_call_host_checked, |
| grpc_error** error) { |
| return true; |
| } |
| |
| static void fake_channel_cancel_check_call_host( |
| grpc_channel_security_connector* sc, grpc_closure* on_call_host_checked, |
| grpc_error* error) { |
| GRPC_ERROR_UNREF(error); |
| } |
| |
| static void fake_channel_add_handshakers( |
| grpc_channel_security_connector* sc, |
| grpc_handshake_manager* handshake_mgr) { |
| grpc_handshake_manager_add( |
| handshake_mgr, |
| grpc_security_handshaker_create( |
| tsi_create_fake_handshaker(true /* is_client */), &sc->base)); |
| } |
| |
| static void fake_server_add_handshakers(grpc_server_security_connector* sc, |
| grpc_handshake_manager* handshake_mgr) { |
| grpc_handshake_manager_add( |
| handshake_mgr, |
| grpc_security_handshaker_create( |
| tsi_create_fake_handshaker(false /* is_client */), &sc->base)); |
| } |
| |
| static grpc_security_connector_vtable fake_channel_vtable = { |
| fake_channel_destroy, fake_channel_check_peer, fake_channel_cmp}; |
| |
| static grpc_security_connector_vtable fake_server_vtable = { |
| fake_server_destroy, fake_server_check_peer, fake_server_cmp}; |
| |
| grpc_channel_security_connector* grpc_fake_channel_security_connector_create( |
| grpc_channel_credentials* channel_creds, |
| grpc_call_credentials* request_metadata_creds, const char* target, |
| const grpc_channel_args* args) { |
| grpc_fake_channel_security_connector* c = |
| (grpc_fake_channel_security_connector*)gpr_zalloc(sizeof(*c)); |
| gpr_ref_init(&c->base.base.refcount, 1); |
| c->base.base.url_scheme = GRPC_FAKE_SECURITY_URL_SCHEME; |
| c->base.base.vtable = &fake_channel_vtable; |
| c->base.channel_creds = channel_creds; |
| c->base.request_metadata_creds = |
| grpc_call_credentials_ref(request_metadata_creds); |
| c->base.check_call_host = fake_channel_check_call_host; |
| c->base.cancel_check_call_host = fake_channel_cancel_check_call_host; |
| c->base.add_handshakers = fake_channel_add_handshakers; |
| c->target = gpr_strdup(target); |
| const char* expected_targets = grpc_fake_transport_get_expected_targets(args); |
| c->expected_targets = gpr_strdup(expected_targets); |
| c->is_lb_channel = (grpc_lb_targets_info_find_in_args(args) != nullptr); |
| return &c->base; |
| } |
| |
| grpc_server_security_connector* grpc_fake_server_security_connector_create( |
| grpc_server_credentials* server_creds) { |
| grpc_server_security_connector* c = |
| (grpc_server_security_connector*)gpr_zalloc( |
| sizeof(grpc_server_security_connector)); |
| gpr_ref_init(&c->base.refcount, 1); |
| c->base.vtable = &fake_server_vtable; |
| c->base.url_scheme = GRPC_FAKE_SECURITY_URL_SCHEME; |
| c->server_creds = server_creds; |
| c->add_handshakers = fake_server_add_handshakers; |
| return c; |
| } |
| |
| /* --- Ssl implementation. --- */ |
| |
| typedef struct { |
| grpc_channel_security_connector base; |
| tsi_ssl_client_handshaker_factory* client_handshaker_factory; |
| char* target_name; |
| char* overridden_target_name; |
| } grpc_ssl_channel_security_connector; |
| |
| typedef struct { |
| grpc_server_security_connector base; |
| tsi_ssl_server_handshaker_factory* server_handshaker_factory; |
| } grpc_ssl_server_security_connector; |
| |
| static bool server_connector_has_cert_config_fetcher( |
| grpc_ssl_server_security_connector* c) { |
| GPR_ASSERT(c != nullptr); |
| grpc_ssl_server_credentials* server_creds = |
| (grpc_ssl_server_credentials*)c->base.server_creds; |
| GPR_ASSERT(server_creds != nullptr); |
| return server_creds->certificate_config_fetcher.cb != nullptr; |
| } |
| |
| static void ssl_channel_destroy(grpc_security_connector* sc) { |
| grpc_ssl_channel_security_connector* c = |
| (grpc_ssl_channel_security_connector*)sc; |
| grpc_channel_credentials_unref(c->base.channel_creds); |
| grpc_call_credentials_unref(c->base.request_metadata_creds); |
| tsi_ssl_client_handshaker_factory_unref(c->client_handshaker_factory); |
| c->client_handshaker_factory = nullptr; |
| if (c->target_name != nullptr) gpr_free(c->target_name); |
| if (c->overridden_target_name != nullptr) gpr_free(c->overridden_target_name); |
| gpr_free(sc); |
| } |
| |
| static void ssl_server_destroy(grpc_security_connector* sc) { |
| grpc_ssl_server_security_connector* c = |
| (grpc_ssl_server_security_connector*)sc; |
| grpc_server_credentials_unref(c->base.server_creds); |
| tsi_ssl_server_handshaker_factory_unref(c->server_handshaker_factory); |
| c->server_handshaker_factory = nullptr; |
| gpr_free(sc); |
| } |
| |
| static void ssl_channel_add_handshakers(grpc_channel_security_connector* sc, |
| grpc_handshake_manager* handshake_mgr) { |
| grpc_ssl_channel_security_connector* c = |
| (grpc_ssl_channel_security_connector*)sc; |
| // Instantiate TSI handshaker. |
| tsi_handshaker* tsi_hs = nullptr; |
| tsi_result result = tsi_ssl_client_handshaker_factory_create_handshaker( |
| c->client_handshaker_factory, |
| c->overridden_target_name != nullptr ? c->overridden_target_name |
| : c->target_name, |
| &tsi_hs); |
| if (result != TSI_OK) { |
| gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.", |
| tsi_result_to_string(result)); |
| return; |
| } |
| // Create handshakers. |
| grpc_handshake_manager_add( |
| handshake_mgr, grpc_security_handshaker_create( |
| tsi_create_adapter_handshaker(tsi_hs), &sc->base)); |
| } |
| |
| static const char** fill_alpn_protocol_strings(size_t* num_alpn_protocols) { |
| GPR_ASSERT(num_alpn_protocols != nullptr); |
| *num_alpn_protocols = grpc_chttp2_num_alpn_versions(); |
| const char** alpn_protocol_strings = |
| (const char**)gpr_malloc(sizeof(const char*) * (*num_alpn_protocols)); |
| for (size_t i = 0; i < *num_alpn_protocols; i++) { |
| alpn_protocol_strings[i] = grpc_chttp2_get_alpn_version_index(i); |
| } |
| return alpn_protocol_strings; |
| } |
| |
| /* Attempts to replace the server_handshaker_factory with a new factory using |
| * the provided grpc_ssl_server_certificate_config. Should new factory creation |
| * fail, the existing factory will not be replaced. Returns true on success (new |
| * factory created). */ |
| static bool try_replace_server_handshaker_factory( |
| grpc_ssl_server_security_connector* sc, |
| const grpc_ssl_server_certificate_config* config) { |
| if (config == nullptr) { |
| gpr_log(GPR_ERROR, |
| "Server certificate config callback returned invalid (NULL) " |
| "config."); |
| return false; |
| } |
| gpr_log(GPR_DEBUG, "Using new server certificate config (%p).", config); |
| |
| size_t num_alpn_protocols = 0; |
| const char** alpn_protocol_strings = |
| fill_alpn_protocol_strings(&num_alpn_protocols); |
| tsi_ssl_pem_key_cert_pair* cert_pairs = grpc_convert_grpc_to_tsi_cert_pairs( |
| config->pem_key_cert_pairs, config->num_key_cert_pairs); |
| tsi_ssl_server_handshaker_factory* new_handshaker_factory = nullptr; |
| grpc_ssl_server_credentials* server_creds = |
| (grpc_ssl_server_credentials*)sc->base.server_creds; |
| tsi_result result = tsi_create_ssl_server_handshaker_factory_ex( |
| cert_pairs, config->num_key_cert_pairs, config->pem_root_certs, |
| get_tsi_client_certificate_request_type( |
| server_creds->config.client_certificate_request), |
| ssl_cipher_suites(), alpn_protocol_strings, (uint16_t)num_alpn_protocols, |
| &new_handshaker_factory); |
| gpr_free(cert_pairs); |
| gpr_free((void*)alpn_protocol_strings); |
| |
| if (result != TSI_OK) { |
| gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.", |
| tsi_result_to_string(result)); |
| return false; |
| } |
| tsi_ssl_server_handshaker_factory_unref(sc->server_handshaker_factory); |
| sc->server_handshaker_factory = new_handshaker_factory; |
| return true; |
| } |
| |
| /* Attempts to fetch the server certificate config if a callback is available. |
| * Current certificate config will continue to be used if the callback returns |
| * an error. Returns true if new credentials were sucessfully loaded. */ |
| static bool try_fetch_ssl_server_credentials( |
| grpc_ssl_server_security_connector* sc) { |
| grpc_ssl_server_certificate_config* certificate_config = nullptr; |
| bool status; |
| |
| GPR_ASSERT(sc != nullptr); |
| if (!server_connector_has_cert_config_fetcher(sc)) return false; |
| |
| grpc_ssl_server_credentials* server_creds = |
| (grpc_ssl_server_credentials*)sc->base.server_creds; |
| grpc_ssl_certificate_config_reload_status cb_result = |
| server_creds->certificate_config_fetcher.cb( |
| server_creds->certificate_config_fetcher.user_data, |
| &certificate_config); |
| if (cb_result == GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED) { |
| gpr_log(GPR_DEBUG, "No change in SSL server credentials."); |
| status = false; |
| } else if (cb_result == GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_NEW) { |
| status = try_replace_server_handshaker_factory(sc, certificate_config); |
| } else { |
| // Log error, continue using previously-loaded credentials. |
| gpr_log(GPR_ERROR, |
| "Failed fetching new server credentials, continuing to " |
| "use previously-loaded credentials."); |
| status = false; |
| } |
| |
| if (certificate_config != nullptr) { |
| grpc_ssl_server_certificate_config_destroy(certificate_config); |
| } |
| return status; |
| } |
| |
| static void ssl_server_add_handshakers(grpc_server_security_connector* sc, |
| grpc_handshake_manager* handshake_mgr) { |
| grpc_ssl_server_security_connector* c = |
| (grpc_ssl_server_security_connector*)sc; |
| // Instantiate TSI handshaker. |
| try_fetch_ssl_server_credentials(c); |
| tsi_handshaker* tsi_hs = nullptr; |
| tsi_result result = tsi_ssl_server_handshaker_factory_create_handshaker( |
| c->server_handshaker_factory, &tsi_hs); |
| if (result != TSI_OK) { |
| gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.", |
| tsi_result_to_string(result)); |
| return; |
| } |
| // Create handshakers. |
| grpc_handshake_manager_add( |
| handshake_mgr, grpc_security_handshaker_create( |
| tsi_create_adapter_handshaker(tsi_hs), &sc->base)); |
| } |
| |
| static int ssl_host_matches_name(const tsi_peer* peer, const char* peer_name) { |
| char* allocated_name = nullptr; |
| int r; |
| |
| if (strchr(peer_name, ':') != nullptr) { |
| char* ignored_port; |
| gpr_split_host_port(peer_name, &allocated_name, &ignored_port); |
| gpr_free(ignored_port); |
| peer_name = allocated_name; |
| if (!peer_name) return 0; |
| } |
| r = tsi_ssl_peer_matches_name(peer, peer_name); |
| gpr_free(allocated_name); |
| return r; |
| } |
| |
| grpc_auth_context* tsi_ssl_peer_to_auth_context(const tsi_peer* peer) { |
| size_t i; |
| grpc_auth_context* ctx = nullptr; |
| const char* peer_identity_property_name = nullptr; |
| |
| /* The caller has checked the certificate type property. */ |
| GPR_ASSERT(peer->property_count >= 1); |
| ctx = grpc_auth_context_create(nullptr); |
| grpc_auth_context_add_cstring_property( |
| ctx, GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME, |
| GRPC_SSL_TRANSPORT_SECURITY_TYPE); |
| for (i = 0; i < peer->property_count; i++) { |
| const tsi_peer_property* prop = &peer->properties[i]; |
| if (prop->name == nullptr) continue; |
| if (strcmp(prop->name, TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY) == 0) { |
| /* If there is no subject alt name, have the CN as the identity. */ |
| if (peer_identity_property_name == nullptr) { |
| peer_identity_property_name = GRPC_X509_CN_PROPERTY_NAME; |
| } |
| grpc_auth_context_add_property(ctx, GRPC_X509_CN_PROPERTY_NAME, |
| prop->value.data, prop->value.length); |
| } else if (strcmp(prop->name, |
| TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY) == 0) { |
| peer_identity_property_name = GRPC_X509_SAN_PROPERTY_NAME; |
| grpc_auth_context_add_property(ctx, GRPC_X509_SAN_PROPERTY_NAME, |
| prop->value.data, prop->value.length); |
| } else if (strcmp(prop->name, TSI_X509_PEM_CERT_PROPERTY) == 0) { |
| grpc_auth_context_add_property(ctx, GRPC_X509_PEM_CERT_PROPERTY_NAME, |
| prop->value.data, prop->value.length); |
| } |
| } |
| if (peer_identity_property_name != nullptr) { |
| GPR_ASSERT(grpc_auth_context_set_peer_identity_property_name( |
| ctx, peer_identity_property_name) == 1); |
| } |
| return ctx; |
| } |
| |
| static grpc_error* ssl_check_peer(grpc_security_connector* sc, |
| const char* peer_name, const tsi_peer* peer, |
| grpc_auth_context** auth_context) { |
| /* Check the ALPN. */ |
| const tsi_peer_property* p = |
| tsi_peer_get_property_by_name(peer, TSI_SSL_ALPN_SELECTED_PROTOCOL); |
| if (p == nullptr) { |
| return GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
| "Cannot check peer: missing selected ALPN property."); |
| } |
| if (!grpc_chttp2_is_alpn_version_supported(p->value.data, p->value.length)) { |
| return GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
| "Cannot check peer: invalid ALPN value."); |
| } |
| |
| /* Check the peer name if specified. */ |
| if (peer_name != nullptr && !ssl_host_matches_name(peer, peer_name)) { |
| char* msg; |
| gpr_asprintf(&msg, "Peer name %s is not in peer certificate", peer_name); |
| grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg); |
| gpr_free(msg); |
| return error; |
| } |
| *auth_context = tsi_ssl_peer_to_auth_context(peer); |
| return GRPC_ERROR_NONE; |
| } |
| |
| static void ssl_channel_check_peer(grpc_security_connector* sc, tsi_peer peer, |
| grpc_auth_context** auth_context, |
| grpc_closure* on_peer_checked) { |
| grpc_ssl_channel_security_connector* c = |
| (grpc_ssl_channel_security_connector*)sc; |
| grpc_error* error = ssl_check_peer(sc, |
| c->overridden_target_name != nullptr |
| ? c->overridden_target_name |
| : c->target_name, |
| &peer, auth_context); |
| GRPC_CLOSURE_SCHED(on_peer_checked, error); |
| tsi_peer_destruct(&peer); |
| } |
| |
| static void ssl_server_check_peer(grpc_security_connector* sc, tsi_peer peer, |
| grpc_auth_context** auth_context, |
| grpc_closure* on_peer_checked) { |
| grpc_error* error = ssl_check_peer(sc, nullptr, &peer, auth_context); |
| tsi_peer_destruct(&peer); |
| GRPC_CLOSURE_SCHED(on_peer_checked, error); |
| } |
| |
| static int ssl_channel_cmp(grpc_security_connector* sc1, |
| grpc_security_connector* sc2) { |
| grpc_ssl_channel_security_connector* c1 = |
| (grpc_ssl_channel_security_connector*)sc1; |
| grpc_ssl_channel_security_connector* c2 = |
| (grpc_ssl_channel_security_connector*)sc2; |
| int c = grpc_channel_security_connector_cmp(&c1->base, &c2->base); |
| if (c != 0) return c; |
| c = strcmp(c1->target_name, c2->target_name); |
| if (c != 0) return c; |
| return (c1->overridden_target_name == nullptr || |
| c2->overridden_target_name == nullptr) |
| ? GPR_ICMP(c1->overridden_target_name, c2->overridden_target_name) |
| : strcmp(c1->overridden_target_name, c2->overridden_target_name); |
| } |
| |
| static int ssl_server_cmp(grpc_security_connector* sc1, |
| grpc_security_connector* sc2) { |
| return grpc_server_security_connector_cmp( |
| (grpc_server_security_connector*)sc1, |
| (grpc_server_security_connector*)sc2); |
| } |
| |
| static void add_shallow_auth_property_to_peer(tsi_peer* peer, |
| const grpc_auth_property* prop, |
| const char* tsi_prop_name) { |
| tsi_peer_property* tsi_prop = &peer->properties[peer->property_count++]; |
| tsi_prop->name = (char*)tsi_prop_name; |
| tsi_prop->value.data = prop->value; |
| tsi_prop->value.length = prop->value_length; |
| } |
| |
| tsi_peer tsi_shallow_peer_from_ssl_auth_context( |
| const grpc_auth_context* auth_context) { |
| size_t max_num_props = 0; |
| grpc_auth_property_iterator it; |
| const grpc_auth_property* prop; |
| tsi_peer peer; |
| memset(&peer, 0, sizeof(peer)); |
| |
| it = grpc_auth_context_property_iterator(auth_context); |
| while (grpc_auth_property_iterator_next(&it) != nullptr) max_num_props++; |
| |
| if (max_num_props > 0) { |
| peer.properties = (tsi_peer_property*)gpr_malloc(max_num_props * |
| sizeof(tsi_peer_property)); |
| it = grpc_auth_context_property_iterator(auth_context); |
| while ((prop = grpc_auth_property_iterator_next(&it)) != nullptr) { |
| if (strcmp(prop->name, GRPC_X509_SAN_PROPERTY_NAME) == 0) { |
| add_shallow_auth_property_to_peer( |
| &peer, prop, TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY); |
| } else if (strcmp(prop->name, GRPC_X509_CN_PROPERTY_NAME) == 0) { |
| add_shallow_auth_property_to_peer( |
| &peer, prop, TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY); |
| } else if (strcmp(prop->name, GRPC_X509_PEM_CERT_PROPERTY_NAME) == 0) { |
| add_shallow_auth_property_to_peer(&peer, prop, |
| TSI_X509_PEM_CERT_PROPERTY); |
| } |
| } |
| } |
| return peer; |
| } |
| |
| void tsi_shallow_peer_destruct(tsi_peer* peer) { |
| if (peer->properties != nullptr) gpr_free(peer->properties); |
| } |
| |
| static bool ssl_channel_check_call_host(grpc_channel_security_connector* sc, |
| const char* host, |
| grpc_auth_context* auth_context, |
| grpc_closure* on_call_host_checked, |
| grpc_error** error) { |
| grpc_ssl_channel_security_connector* c = |
| (grpc_ssl_channel_security_connector*)sc; |
| grpc_security_status status = GRPC_SECURITY_ERROR; |
| tsi_peer peer = tsi_shallow_peer_from_ssl_auth_context(auth_context); |
| if (ssl_host_matches_name(&peer, host)) status = GRPC_SECURITY_OK; |
| /* If the target name was overridden, then the original target_name was |
| 'checked' transitively during the previous peer check at the end of the |
| handshake. */ |
| if (c->overridden_target_name != nullptr && |
| strcmp(host, c->target_name) == 0) { |
| status = GRPC_SECURITY_OK; |
| } |
| if (status != GRPC_SECURITY_OK) { |
| *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
| "call host does not match SSL server name"); |
| } |
| tsi_shallow_peer_destruct(&peer); |
| return true; |
| } |
| |
| static void ssl_channel_cancel_check_call_host( |
| grpc_channel_security_connector* sc, grpc_closure* on_call_host_checked, |
| grpc_error* error) { |
| GRPC_ERROR_UNREF(error); |
| } |
| |
| static grpc_security_connector_vtable ssl_channel_vtable = { |
| ssl_channel_destroy, ssl_channel_check_peer, ssl_channel_cmp}; |
| |
| static grpc_security_connector_vtable ssl_server_vtable = { |
| ssl_server_destroy, ssl_server_check_peer, ssl_server_cmp}; |
| |
| /* returns a NULL terminated slice. */ |
| static grpc_slice compute_default_pem_root_certs_once(void) { |
| grpc_slice result = grpc_empty_slice(); |
| |
| /* First try to load the roots from the environment. */ |
| char* default_root_certs_path = |
| gpr_getenv(GRPC_DEFAULT_SSL_ROOTS_FILE_PATH_ENV_VAR); |
| if (default_root_certs_path != nullptr) { |
| GRPC_LOG_IF_ERROR("load_file", |
| grpc_load_file(default_root_certs_path, 1, &result)); |
| gpr_free(default_root_certs_path); |
| } |
| |
| /* Try overridden roots if needed. */ |
| grpc_ssl_roots_override_result ovrd_res = GRPC_SSL_ROOTS_OVERRIDE_FAIL; |
| if (GRPC_SLICE_IS_EMPTY(result) && ssl_roots_override_cb != nullptr) { |
| char* pem_root_certs = nullptr; |
| ovrd_res = ssl_roots_override_cb(&pem_root_certs); |
| if (ovrd_res == GRPC_SSL_ROOTS_OVERRIDE_OK) { |
| GPR_ASSERT(pem_root_certs != nullptr); |
| result = grpc_slice_from_copied_buffer( |
| pem_root_certs, |
| strlen(pem_root_certs) + 1); // NULL terminator. |
| } |
| gpr_free(pem_root_certs); |
| } |
| |
| /* Fall back to installed certs if needed. */ |
| if (GRPC_SLICE_IS_EMPTY(result) && |
| ovrd_res != GRPC_SSL_ROOTS_OVERRIDE_FAIL_PERMANENTLY) { |
| GRPC_LOG_IF_ERROR("load_file", |
| grpc_load_file(installed_roots_path, 1, &result)); |
| } |
| return result; |
| } |
| |
| static grpc_slice default_pem_root_certs; |
| |
| static void init_default_pem_root_certs(void) { |
| default_pem_root_certs = compute_default_pem_root_certs_once(); |
| } |
| |
| grpc_slice grpc_get_default_ssl_roots_for_testing(void) { |
| return compute_default_pem_root_certs_once(); |
| } |
| |
| const char* grpc_get_default_ssl_roots(void) { |
| /* TODO(jboeuf@google.com): Maybe revisit the approach which consists in |
| loading all the roots once for the lifetime of the process. */ |
| static gpr_once once = GPR_ONCE_INIT; |
| gpr_once_init(&once, init_default_pem_root_certs); |
| return GRPC_SLICE_IS_EMPTY(default_pem_root_certs) |
| ? nullptr |
| : (const char*)GRPC_SLICE_START_PTR(default_pem_root_certs); |
| } |
| |
| grpc_security_status grpc_ssl_channel_security_connector_create( |
| grpc_channel_credentials* channel_creds, |
| grpc_call_credentials* request_metadata_creds, |
| const grpc_ssl_config* config, const char* target_name, |
| const char* overridden_target_name, grpc_channel_security_connector** sc) { |
| size_t num_alpn_protocols = 0; |
| const char** alpn_protocol_strings = |
| fill_alpn_protocol_strings(&num_alpn_protocols); |
| tsi_result result = TSI_OK; |
| grpc_ssl_channel_security_connector* c; |
| const char* pem_root_certs; |
| char* port; |
| bool has_key_cert_pair; |
| |
| if (config == nullptr || target_name == nullptr) { |
| gpr_log(GPR_ERROR, "An ssl channel needs a config and a target name."); |
| goto error; |
| } |
| if (config->pem_root_certs == nullptr) { |
| pem_root_certs = grpc_get_default_ssl_roots(); |
| if (pem_root_certs == nullptr) { |
| gpr_log(GPR_ERROR, "Could not get default pem root certs."); |
| goto error; |
| } |
| } else { |
| pem_root_certs = config->pem_root_certs; |
| } |
| |
| c = (grpc_ssl_channel_security_connector*)gpr_zalloc( |
| sizeof(grpc_ssl_channel_security_connector)); |
| |
| gpr_ref_init(&c->base.base.refcount, 1); |
| c->base.base.vtable = &ssl_channel_vtable; |
| c->base.base.url_scheme = GRPC_SSL_URL_SCHEME; |
| c->base.channel_creds = grpc_channel_credentials_ref(channel_creds); |
| c->base.request_metadata_creds = |
| grpc_call_credentials_ref(request_metadata_creds); |
| c->base.check_call_host = ssl_channel_check_call_host; |
| c->base.cancel_check_call_host = ssl_channel_cancel_check_call_host; |
| c->base.add_handshakers = ssl_channel_add_handshakers; |
| gpr_split_host_port(target_name, &c->target_name, &port); |
| gpr_free(port); |
| if (overridden_target_name != nullptr) { |
| c->overridden_target_name = gpr_strdup(overridden_target_name); |
| } |
| |
| has_key_cert_pair = config->pem_key_cert_pair != nullptr && |
| config->pem_key_cert_pair->private_key != nullptr && |
| config->pem_key_cert_pair->cert_chain != nullptr; |
| result = tsi_create_ssl_client_handshaker_factory( |
| has_key_cert_pair ? config->pem_key_cert_pair : nullptr, pem_root_certs, |
| ssl_cipher_suites(), alpn_protocol_strings, (uint16_t)num_alpn_protocols, |
| &c->client_handshaker_factory); |
| if (result != TSI_OK) { |
| gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.", |
| tsi_result_to_string(result)); |
| ssl_channel_destroy(&c->base.base); |
| *sc = nullptr; |
| goto error; |
| } |
| *sc = &c->base; |
| gpr_free((void*)alpn_protocol_strings); |
| return GRPC_SECURITY_OK; |
| |
| error: |
| gpr_free((void*)alpn_protocol_strings); |
| return GRPC_SECURITY_ERROR; |
| } |
| |
| static grpc_ssl_server_security_connector* |
| grpc_ssl_server_security_connector_initialize( |
| grpc_server_credentials* server_creds) { |
| grpc_ssl_server_security_connector* c = |
| (grpc_ssl_server_security_connector*)gpr_zalloc( |
| sizeof(grpc_ssl_server_security_connector)); |
| gpr_ref_init(&c->base.base.refcount, 1); |
| c->base.base.url_scheme = GRPC_SSL_URL_SCHEME; |
| c->base.base.vtable = &ssl_server_vtable; |
| c->base.add_handshakers = ssl_server_add_handshakers; |
| c->base.server_creds = grpc_server_credentials_ref(server_creds); |
| return c; |
| } |
| |
| grpc_security_status grpc_ssl_server_security_connector_create( |
| grpc_server_credentials* gsc, grpc_server_security_connector** sc) { |
| tsi_result result = TSI_OK; |
| grpc_ssl_server_credentials* server_credentials = |
| (grpc_ssl_server_credentials*)gsc; |
| grpc_security_status retval = GRPC_SECURITY_OK; |
| |
| GPR_ASSERT(server_credentials != nullptr); |
| GPR_ASSERT(sc != nullptr); |
| |
| grpc_ssl_server_security_connector* c = |
| grpc_ssl_server_security_connector_initialize(gsc); |
| if (server_connector_has_cert_config_fetcher(c)) { |
| // Load initial credentials from certificate_config_fetcher: |
| if (!try_fetch_ssl_server_credentials(c)) { |
| gpr_log(GPR_ERROR, "Failed loading SSL server credentials from fetcher."); |
| retval = GRPC_SECURITY_ERROR; |
| } |
| } else { |
| size_t num_alpn_protocols = 0; |
| const char** alpn_protocol_strings = |
| fill_alpn_protocol_strings(&num_alpn_protocols); |
| result = tsi_create_ssl_server_handshaker_factory_ex( |
| server_credentials->config.pem_key_cert_pairs, |
| server_credentials->config.num_key_cert_pairs, |
| server_credentials->config.pem_root_certs, |
| get_tsi_client_certificate_request_type( |
| server_credentials->config.client_certificate_request), |
| ssl_cipher_suites(), alpn_protocol_strings, |
| (uint16_t)num_alpn_protocols, &c->server_handshaker_factory); |
| gpr_free((void*)alpn_protocol_strings); |
| if (result != TSI_OK) { |
| gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.", |
| tsi_result_to_string(result)); |
| retval = GRPC_SECURITY_ERROR; |
| } |
| } |
| |
| if (retval == GRPC_SECURITY_OK) { |
| *sc = &c->base; |
| } else { |
| if (c != nullptr) ssl_server_destroy(&c->base.base); |
| if (sc != nullptr) *sc = nullptr; |
| } |
| return retval; |
| } |
