| /* |
| * |
| * Copyright 2015-2016, 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/security/security_connector.h" |
| |
| #include <string.h> |
| |
| #include "src/core/security/credentials.h" |
| #include "src/core/security/handshake.h" |
| #include "src/core/security/secure_endpoint.h" |
| #include "src/core/security/security_context.h" |
| #include "src/core/support/env.h" |
| #include "src/core/support/file.h" |
| #include "src/core/support/string.h" |
| #include "src/core/transport/chttp2/alpn.h" |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/host_port.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/slice_buffer.h> |
| #include <grpc/support/string_util.h> |
| #include "src/core/tsi/fake_transport_security.h" |
| #include "src/core/tsi/ssl_transport_security.h" |
| |
| /* -- 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 = NULL; |
| |
| 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-AES128-SHA256:ECDHE-RSA-AES256-" \ |
| "SHA384:ECDHE-RSA-AES256-GCM-SHA384" |
| |
| static gpr_once cipher_suites_once = GPR_ONCE_INIT; |
| static const char *cipher_suites = NULL; |
| |
| static void init_cipher_suites(void) { |
| char *overridden = gpr_getenv("GRPC_SSL_CIPHER_SUITES"); |
| cipher_suites = overridden != NULL ? 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 == NULL) return NULL; |
| for (i = 0; i < peer->property_count; i++) { |
| const tsi_peer_property *property = &peer->properties[i]; |
| if (name == NULL && property->name == NULL) { |
| return property; |
| } |
| if (name != NULL && property->name != NULL && |
| strcmp(property->name, name) == 0) { |
| return property; |
| } |
| } |
| return NULL; |
| } |
| |
| void grpc_security_connector_shutdown(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *connector) { |
| grpc_security_connector_handshake_list *tmp; |
| if (!connector->is_client_side) { |
| gpr_mu_lock(&connector->mu); |
| while (connector->handshaking_handshakes) { |
| tmp = connector->handshaking_handshakes; |
| grpc_security_handshake_shutdown( |
| exec_ctx, connector->handshaking_handshakes->handshake); |
| connector->handshaking_handshakes = tmp->next; |
| gpr_free(tmp); |
| } |
| gpr_mu_unlock(&connector->mu); |
| } |
| } |
| |
| void grpc_security_connector_do_handshake(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, |
| grpc_endpoint *nonsecure_endpoint, |
| grpc_security_handshake_done_cb cb, |
| void *user_data) { |
| if (sc == NULL || nonsecure_endpoint == NULL) { |
| cb(exec_ctx, user_data, GRPC_SECURITY_ERROR, NULL, NULL); |
| } else { |
| sc->vtable->do_handshake(exec_ctx, sc, nonsecure_endpoint, cb, user_data); |
| } |
| } |
| |
| void grpc_security_connector_check_peer(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, |
| tsi_peer peer, |
| grpc_security_peer_check_cb cb, |
| void *user_data) { |
| if (sc == NULL) { |
| cb(exec_ctx, user_data, GRPC_SECURITY_ERROR, NULL); |
| tsi_peer_destruct(&peer); |
| } else { |
| sc->vtable->check_peer(exec_ctx, sc, peer, cb, user_data); |
| } |
| } |
| |
| void grpc_channel_security_connector_check_call_host( |
| grpc_exec_ctx *exec_ctx, grpc_channel_security_connector *sc, |
| const char *host, grpc_auth_context *auth_context, |
| grpc_security_call_host_check_cb cb, void *user_data) { |
| if (sc == NULL || sc->check_call_host == NULL) { |
| cb(exec_ctx, user_data, GRPC_SECURITY_ERROR); |
| } else { |
| sc->check_call_host(exec_ctx, sc, host, auth_context, cb, user_data); |
| } |
| } |
| |
| #ifdef GRPC_SECURITY_CONNECTOR_REFCOUNT_DEBUG |
| grpc_security_connector *grpc_security_connector_ref( |
| grpc_security_connector *sc, const char *file, int line, |
| const char *reason) { |
| if (sc == NULL) return NULL; |
| gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, |
| "SECURITY_CONNECTOR:%p ref %d -> %d %s", sc, |
| (int)sc->refcount.count, (int)sc->refcount.count + 1, reason); |
| #else |
| grpc_security_connector *grpc_security_connector_ref( |
| grpc_security_connector *sc) { |
| if (sc == NULL) return NULL; |
| #endif |
| gpr_ref(&sc->refcount); |
| return sc; |
| } |
| |
| #ifdef GRPC_SECURITY_CONNECTOR_REFCOUNT_DEBUG |
| void grpc_security_connector_unref(grpc_security_connector *sc, |
| const char *file, int line, |
| const char *reason) { |
| if (sc == NULL) return; |
| gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, |
| "SECURITY_CONNECTOR:%p unref %d -> %d %s", sc, |
| (int)sc->refcount.count, (int)sc->refcount.count - 1, reason); |
| #else |
| void grpc_security_connector_unref(grpc_security_connector *sc) { |
| if (sc == NULL) return; |
| #endif |
| if (gpr_unref(&sc->refcount)) sc->vtable->destroy(sc); |
| } |
| |
| static void connector_pointer_arg_destroy(void *p) { |
| GRPC_SECURITY_CONNECTOR_UNREF(p, "connector_pointer_arg"); |
| } |
| |
| static void *connector_pointer_arg_copy(void *p) { |
| return GRPC_SECURITY_CONNECTOR_REF(p, "connector_pointer_arg"); |
| } |
| |
| grpc_arg grpc_security_connector_to_arg(grpc_security_connector *sc) { |
| grpc_arg result; |
| result.type = GRPC_ARG_POINTER; |
| result.key = GRPC_SECURITY_CONNECTOR_ARG; |
| result.value.pointer.destroy = connector_pointer_arg_destroy; |
| result.value.pointer.copy = connector_pointer_arg_copy; |
| result.value.pointer.p = sc; |
| return result; |
| } |
| |
| grpc_security_connector *grpc_security_connector_from_arg(const grpc_arg *arg) { |
| if (strcmp(arg->key, GRPC_SECURITY_CONNECTOR_ARG)) return NULL; |
| if (arg->type != GRPC_ARG_POINTER) { |
| gpr_log(GPR_ERROR, "Invalid type %d for arg %s", arg->type, |
| GRPC_SECURITY_CONNECTOR_ARG); |
| return NULL; |
| } |
| return arg->value.pointer.p; |
| } |
| |
| grpc_security_connector *grpc_find_security_connector_in_args( |
| const grpc_channel_args *args) { |
| size_t i; |
| if (args == NULL) return NULL; |
| for (i = 0; i < args->num_args; i++) { |
| grpc_security_connector *sc = |
| grpc_security_connector_from_arg(&args->args[i]); |
| if (sc != NULL) return sc; |
| } |
| return NULL; |
| } |
| |
| /* -- Fake implementation. -- */ |
| |
| static void fake_channel_destroy(grpc_security_connector *sc) { |
| grpc_channel_security_connector *c = (grpc_channel_security_connector *)sc; |
| grpc_call_credentials_unref(c->request_metadata_creds); |
| gpr_free(sc); |
| } |
| |
| static void fake_server_destroy(grpc_security_connector *sc) { |
| gpr_mu_destroy(&sc->mu); |
| gpr_free(sc); |
| } |
| |
| static void fake_check_peer(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, tsi_peer peer, |
| grpc_security_peer_check_cb cb, void *user_data) { |
| const char *prop_name; |
| grpc_security_status status = GRPC_SECURITY_OK; |
| grpc_auth_context *auth_context = NULL; |
| if (peer.property_count != 1) { |
| gpr_log(GPR_ERROR, "Fake peers should only have 1 property."); |
| status = GRPC_SECURITY_ERROR; |
| goto end; |
| } |
| prop_name = peer.properties[0].name; |
| if (prop_name == NULL || |
| strcmp(prop_name, TSI_CERTIFICATE_TYPE_PEER_PROPERTY)) { |
| gpr_log(GPR_ERROR, "Unexpected property in fake peer: %s.", |
| prop_name == NULL ? "<EMPTY>" : prop_name); |
| status = GRPC_SECURITY_ERROR; |
| goto end; |
| } |
| if (strncmp(peer.properties[0].value.data, TSI_FAKE_CERTIFICATE_TYPE, |
| peer.properties[0].value.length)) { |
| gpr_log(GPR_ERROR, "Invalid value for cert type property."); |
| status = GRPC_SECURITY_ERROR; |
| goto end; |
| } |
| auth_context = grpc_auth_context_create(NULL); |
| grpc_auth_context_add_cstring_property( |
| auth_context, GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME, |
| GRPC_FAKE_TRANSPORT_SECURITY_TYPE); |
| |
| end: |
| cb(exec_ctx, user_data, status, auth_context); |
| grpc_auth_context_unref(auth_context); |
| tsi_peer_destruct(&peer); |
| } |
| |
| static void fake_channel_check_call_host(grpc_exec_ctx *exec_ctx, |
| grpc_channel_security_connector *sc, |
| const char *host, |
| grpc_auth_context *auth_context, |
| grpc_security_call_host_check_cb cb, |
| void *user_data) { |
| cb(exec_ctx, user_data, GRPC_SECURITY_OK); |
| } |
| |
| static void fake_channel_do_handshake(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, |
| grpc_endpoint *nonsecure_endpoint, |
| grpc_security_handshake_done_cb cb, |
| void *user_data) { |
| grpc_do_security_handshake(exec_ctx, tsi_create_fake_handshaker(1), sc, |
| nonsecure_endpoint, cb, user_data); |
| } |
| |
| static void fake_server_do_handshake(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, |
| grpc_endpoint *nonsecure_endpoint, |
| grpc_security_handshake_done_cb cb, |
| void *user_data) { |
| grpc_do_security_handshake(exec_ctx, tsi_create_fake_handshaker(0), sc, |
| nonsecure_endpoint, cb, user_data); |
| } |
| |
| static grpc_security_connector_vtable fake_channel_vtable = { |
| fake_channel_destroy, fake_channel_do_handshake, fake_check_peer}; |
| |
| static grpc_security_connector_vtable fake_server_vtable = { |
| fake_server_destroy, fake_server_do_handshake, fake_check_peer}; |
| |
| grpc_channel_security_connector *grpc_fake_channel_security_connector_create( |
| grpc_call_credentials *request_metadata_creds) { |
| grpc_channel_security_connector *c = gpr_malloc(sizeof(*c)); |
| memset(c, 0, sizeof(*c)); |
| gpr_ref_init(&c->base.refcount, 1); |
| c->base.is_client_side = 1; |
| c->base.url_scheme = GRPC_FAKE_SECURITY_URL_SCHEME; |
| c->base.vtable = &fake_channel_vtable; |
| c->request_metadata_creds = grpc_call_credentials_ref(request_metadata_creds); |
| c->check_call_host = fake_channel_check_call_host; |
| return c; |
| } |
| |
| grpc_security_connector *grpc_fake_server_security_connector_create(void) { |
| grpc_security_connector *c = gpr_malloc(sizeof(grpc_security_connector)); |
| memset(c, 0, sizeof(grpc_security_connector)); |
| gpr_ref_init(&c->refcount, 1); |
| c->is_client_side = 0; |
| c->vtable = &fake_server_vtable; |
| c->url_scheme = GRPC_FAKE_SECURITY_URL_SCHEME; |
| gpr_mu_init(&c->mu); |
| return c; |
| } |
| |
| /* --- Ssl implementation. --- */ |
| |
| typedef struct { |
| grpc_channel_security_connector base; |
| tsi_ssl_handshaker_factory *handshaker_factory; |
| char *target_name; |
| char *overridden_target_name; |
| } grpc_ssl_channel_security_connector; |
| |
| typedef struct { |
| grpc_security_connector base; |
| tsi_ssl_handshaker_factory *handshaker_factory; |
| } grpc_ssl_server_security_connector; |
| |
| static void ssl_channel_destroy(grpc_security_connector *sc) { |
| grpc_ssl_channel_security_connector *c = |
| (grpc_ssl_channel_security_connector *)sc; |
| grpc_call_credentials_unref(c->base.request_metadata_creds); |
| if (c->handshaker_factory != NULL) { |
| tsi_ssl_handshaker_factory_destroy(c->handshaker_factory); |
| } |
| if (c->target_name != NULL) gpr_free(c->target_name); |
| if (c->overridden_target_name != NULL) 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; |
| |
| if (c->handshaker_factory != NULL) { |
| tsi_ssl_handshaker_factory_destroy(c->handshaker_factory); |
| } |
| gpr_mu_destroy(&sc->mu); |
| gpr_free(sc); |
| } |
| |
| static grpc_security_status ssl_create_handshaker( |
| tsi_ssl_handshaker_factory *handshaker_factory, int is_client, |
| const char *peer_name, tsi_handshaker **handshaker) { |
| tsi_result result = TSI_OK; |
| if (handshaker_factory == NULL) return GRPC_SECURITY_ERROR; |
| result = tsi_ssl_handshaker_factory_create_handshaker( |
| handshaker_factory, is_client ? peer_name : NULL, handshaker); |
| if (result != TSI_OK) { |
| gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.", |
| tsi_result_to_string(result)); |
| return GRPC_SECURITY_ERROR; |
| } |
| return GRPC_SECURITY_OK; |
| } |
| |
| static void ssl_channel_do_handshake(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, |
| grpc_endpoint *nonsecure_endpoint, |
| grpc_security_handshake_done_cb cb, |
| void *user_data) { |
| grpc_ssl_channel_security_connector *c = |
| (grpc_ssl_channel_security_connector *)sc; |
| tsi_handshaker *handshaker; |
| grpc_security_status status = ssl_create_handshaker( |
| c->handshaker_factory, 1, |
| c->overridden_target_name != NULL ? c->overridden_target_name |
| : c->target_name, |
| &handshaker); |
| if (status != GRPC_SECURITY_OK) { |
| cb(exec_ctx, user_data, status, NULL, NULL); |
| } else { |
| grpc_do_security_handshake(exec_ctx, handshaker, sc, nonsecure_endpoint, cb, |
| user_data); |
| } |
| } |
| |
| static void ssl_server_do_handshake(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, |
| grpc_endpoint *nonsecure_endpoint, |
| grpc_security_handshake_done_cb cb, |
| void *user_data) { |
| grpc_ssl_server_security_connector *c = |
| (grpc_ssl_server_security_connector *)sc; |
| tsi_handshaker *handshaker; |
| grpc_security_status status = |
| ssl_create_handshaker(c->handshaker_factory, 0, NULL, &handshaker); |
| if (status != GRPC_SECURITY_OK) { |
| cb(exec_ctx, user_data, status, NULL, NULL); |
| } else { |
| grpc_do_security_handshake(exec_ctx, handshaker, sc, nonsecure_endpoint, cb, |
| user_data); |
| } |
| } |
| |
| static int ssl_host_matches_name(const tsi_peer *peer, const char *peer_name) { |
| char *allocated_name = NULL; |
| int r; |
| |
| if (strchr(peer_name, ':') != NULL) { |
| 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 = NULL; |
| const char *peer_identity_property_name = NULL; |
| |
| /* The caller has checked the certificate type property. */ |
| GPR_ASSERT(peer->property_count >= 1); |
| ctx = grpc_auth_context_create(NULL); |
| 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 == NULL) 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 == NULL) { |
| 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); |
| } |
| } |
| if (peer_identity_property_name != NULL) { |
| GPR_ASSERT(grpc_auth_context_set_peer_identity_property_name( |
| ctx, peer_identity_property_name) == 1); |
| } |
| return ctx; |
| } |
| |
| static grpc_security_status 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 == NULL) { |
| gpr_log(GPR_ERROR, "Missing selected ALPN property."); |
| return GRPC_SECURITY_ERROR; |
| } |
| if (!grpc_chttp2_is_alpn_version_supported(p->value.data, p->value.length)) { |
| gpr_log(GPR_ERROR, "Invalid ALPN value."); |
| return GRPC_SECURITY_ERROR; |
| } |
| |
| /* Check the peer name if specified. */ |
| if (peer_name != NULL && !ssl_host_matches_name(peer, peer_name)) { |
| gpr_log(GPR_ERROR, "Peer name %s is not in peer certificate", peer_name); |
| return GRPC_SECURITY_ERROR; |
| } |
| *auth_context = tsi_ssl_peer_to_auth_context(peer); |
| return GRPC_SECURITY_OK; |
| } |
| |
| static void ssl_channel_check_peer(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, tsi_peer peer, |
| grpc_security_peer_check_cb cb, |
| void *user_data) { |
| grpc_ssl_channel_security_connector *c = |
| (grpc_ssl_channel_security_connector *)sc; |
| grpc_security_status status; |
| grpc_auth_context *auth_context = NULL; |
| status = ssl_check_peer(sc, c->overridden_target_name != NULL |
| ? c->overridden_target_name |
| : c->target_name, |
| &peer, &auth_context); |
| cb(exec_ctx, user_data, status, auth_context); |
| grpc_auth_context_unref(auth_context); |
| tsi_peer_destruct(&peer); |
| } |
| |
| static void ssl_server_check_peer(grpc_exec_ctx *exec_ctx, |
| grpc_security_connector *sc, tsi_peer peer, |
| grpc_security_peer_check_cb cb, |
| void *user_data) { |
| grpc_auth_context *auth_context = NULL; |
| grpc_security_status status = ssl_check_peer(sc, NULL, &peer, &auth_context); |
| tsi_peer_destruct(&peer); |
| cb(exec_ctx, user_data, status, auth_context); |
| grpc_auth_context_unref(auth_context); |
| } |
| |
| static void add_shalow_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) != NULL) max_num_props++; |
| |
| if (max_num_props > 0) { |
| peer.properties = 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)) != NULL) { |
| if (strcmp(prop->name, GRPC_X509_SAN_PROPERTY_NAME) == 0) { |
| add_shalow_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_shalow_auth_property_to_peer( |
| &peer, prop, TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY); |
| } |
| } |
| } |
| return peer; |
| } |
| |
| void tsi_shallow_peer_destruct(tsi_peer *peer) { |
| if (peer->properties != NULL) gpr_free(peer->properties); |
| } |
| |
| static void ssl_channel_check_call_host(grpc_exec_ctx *exec_ctx, |
| grpc_channel_security_connector *sc, |
| const char *host, |
| grpc_auth_context *auth_context, |
| grpc_security_call_host_check_cb cb, |
| void *user_data) { |
| 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 != NULL && strcmp(host, c->target_name) == 0) { |
| status = GRPC_SECURITY_OK; |
| } |
| cb(exec_ctx, user_data, status); |
| tsi_shallow_peer_destruct(&peer); |
| } |
| |
| static grpc_security_connector_vtable ssl_channel_vtable = { |
| ssl_channel_destroy, ssl_channel_do_handshake, ssl_channel_check_peer}; |
| |
| static grpc_security_connector_vtable ssl_server_vtable = { |
| ssl_server_destroy, ssl_server_do_handshake, ssl_server_check_peer}; |
| |
| static gpr_slice compute_default_pem_root_certs_once(void) { |
| gpr_slice result = gpr_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 != NULL) { |
| result = gpr_load_file(default_root_certs_path, 0, NULL); |
| gpr_free(default_root_certs_path); |
| } |
| |
| /* Try overridden roots if needed. */ |
| grpc_ssl_roots_override_result ovrd_res = GRPC_SSL_ROOTS_OVERRIDE_FAIL; |
| if (GPR_SLICE_IS_EMPTY(result) && ssl_roots_override_cb != NULL) { |
| char *pem_root_certs = NULL; |
| ovrd_res = ssl_roots_override_cb(&pem_root_certs); |
| if (ovrd_res == GRPC_SSL_ROOTS_OVERRIDE_OK) { |
| GPR_ASSERT(pem_root_certs != NULL); |
| result = gpr_slice_new(pem_root_certs, strlen(pem_root_certs), gpr_free); |
| } |
| } |
| |
| /* Fall back to installed certs if needed. */ |
| if (GPR_SLICE_IS_EMPTY(result) && |
| ovrd_res != GRPC_SSL_ROOTS_OVERRIDE_FAIL_PERMANENTLY) { |
| result = gpr_load_file(installed_roots_path, 0, NULL); |
| } |
| return result; |
| } |
| |
| static gpr_slice default_pem_root_certs; |
| |
| static void init_default_pem_root_certs(void) { |
| default_pem_root_certs = compute_default_pem_root_certs_once(); |
| } |
| |
| gpr_slice grpc_get_default_ssl_roots_for_testing(void) { |
| return compute_default_pem_root_certs_once(); |
| } |
| |
| size_t grpc_get_default_ssl_roots(const unsigned char **pem_root_certs) { |
| /* 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); |
| *pem_root_certs = GPR_SLICE_START_PTR(default_pem_root_certs); |
| return GPR_SLICE_LENGTH(default_pem_root_certs); |
| } |
| |
| grpc_security_status grpc_ssl_channel_security_connector_create( |
| 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 = grpc_chttp2_num_alpn_versions(); |
| const unsigned char **alpn_protocol_strings = |
| gpr_malloc(sizeof(const char *) * num_alpn_protocols); |
| unsigned char *alpn_protocol_string_lengths = |
| gpr_malloc(sizeof(unsigned char) * num_alpn_protocols); |
| tsi_result result = TSI_OK; |
| grpc_ssl_channel_security_connector *c; |
| size_t i; |
| const unsigned char *pem_root_certs; |
| size_t pem_root_certs_size; |
| char *port; |
| |
| for (i = 0; i < num_alpn_protocols; i++) { |
| alpn_protocol_strings[i] = |
| (const unsigned char *)grpc_chttp2_get_alpn_version_index(i); |
| alpn_protocol_string_lengths[i] = |
| (unsigned char)strlen(grpc_chttp2_get_alpn_version_index(i)); |
| } |
| |
| if (config == NULL || target_name == NULL) { |
| gpr_log(GPR_ERROR, "An ssl channel needs a config and a target name."); |
| goto error; |
| } |
| if (config->pem_root_certs == NULL) { |
| pem_root_certs_size = grpc_get_default_ssl_roots(&pem_root_certs); |
| if (pem_root_certs == NULL || pem_root_certs_size == 0) { |
| gpr_log(GPR_ERROR, "Could not get default pem root certs."); |
| goto error; |
| } |
| } else { |
| pem_root_certs = config->pem_root_certs; |
| pem_root_certs_size = config->pem_root_certs_size; |
| } |
| |
| c = gpr_malloc(sizeof(grpc_ssl_channel_security_connector)); |
| memset(c, 0, sizeof(grpc_ssl_channel_security_connector)); |
| |
| gpr_ref_init(&c->base.base.refcount, 1); |
| c->base.base.vtable = &ssl_channel_vtable; |
| c->base.base.is_client_side = 1; |
| c->base.base.url_scheme = GRPC_SSL_URL_SCHEME; |
| c->base.request_metadata_creds = |
| grpc_call_credentials_ref(request_metadata_creds); |
| c->base.check_call_host = ssl_channel_check_call_host; |
| gpr_split_host_port(target_name, &c->target_name, &port); |
| gpr_free(port); |
| if (overridden_target_name != NULL) { |
| c->overridden_target_name = gpr_strdup(overridden_target_name); |
| } |
| result = tsi_create_ssl_client_handshaker_factory( |
| config->pem_private_key, config->pem_private_key_size, |
| config->pem_cert_chain, config->pem_cert_chain_size, pem_root_certs, |
| pem_root_certs_size, ssl_cipher_suites(), alpn_protocol_strings, |
| alpn_protocol_string_lengths, (uint16_t)num_alpn_protocols, |
| &c->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 = NULL; |
| goto error; |
| } |
| *sc = &c->base; |
| gpr_free((void *)alpn_protocol_strings); |
| gpr_free(alpn_protocol_string_lengths); |
| return GRPC_SECURITY_OK; |
| |
| error: |
| gpr_free((void *)alpn_protocol_strings); |
| gpr_free(alpn_protocol_string_lengths); |
| return GRPC_SECURITY_ERROR; |
| } |
| |
| grpc_security_status grpc_ssl_server_security_connector_create( |
| const grpc_ssl_server_config *config, grpc_security_connector **sc) { |
| size_t num_alpn_protocols = grpc_chttp2_num_alpn_versions(); |
| const unsigned char **alpn_protocol_strings = |
| gpr_malloc(sizeof(const char *) * num_alpn_protocols); |
| unsigned char *alpn_protocol_string_lengths = |
| gpr_malloc(sizeof(unsigned char) * num_alpn_protocols); |
| tsi_result result = TSI_OK; |
| grpc_ssl_server_security_connector *c; |
| size_t i; |
| |
| for (i = 0; i < num_alpn_protocols; i++) { |
| alpn_protocol_strings[i] = |
| (const unsigned char *)grpc_chttp2_get_alpn_version_index(i); |
| alpn_protocol_string_lengths[i] = |
| (unsigned char)strlen(grpc_chttp2_get_alpn_version_index(i)); |
| } |
| |
| if (config == NULL || config->num_key_cert_pairs == 0) { |
| gpr_log(GPR_ERROR, "An SSL server needs a key and a cert."); |
| goto error; |
| } |
| c = gpr_malloc(sizeof(grpc_ssl_server_security_connector)); |
| memset(c, 0, sizeof(grpc_ssl_server_security_connector)); |
| |
| gpr_ref_init(&c->base.refcount, 1); |
| c->base.url_scheme = GRPC_SSL_URL_SCHEME; |
| c->base.vtable = &ssl_server_vtable; |
| result = tsi_create_ssl_server_handshaker_factory( |
| (const unsigned char **)config->pem_private_keys, |
| config->pem_private_keys_sizes, |
| (const unsigned char **)config->pem_cert_chains, |
| config->pem_cert_chains_sizes, config->num_key_cert_pairs, |
| config->pem_root_certs, config->pem_root_certs_size, |
| config->force_client_auth, ssl_cipher_suites(), alpn_protocol_strings, |
| alpn_protocol_string_lengths, (uint16_t)num_alpn_protocols, |
| &c->handshaker_factory); |
| if (result != TSI_OK) { |
| gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.", |
| tsi_result_to_string(result)); |
| ssl_server_destroy(&c->base); |
| *sc = NULL; |
| goto error; |
| } |
| gpr_mu_init(&c->base.mu); |
| *sc = &c->base; |
| gpr_free((void *)alpn_protocol_strings); |
| gpr_free(alpn_protocol_string_lengths); |
| return GRPC_SECURITY_OK; |
| |
| error: |
| gpr_free((void *)alpn_protocol_strings); |
| gpr_free(alpn_protocol_string_lengths); |
| return GRPC_SECURITY_ERROR; |
| } |
