diff options
Diffstat (limited to 'src/core/lib/security/credentials/ssl/ssl_credentials.c')
| -rw-r--r-- | src/core/lib/security/credentials/ssl/ssl_credentials.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/core/lib/security/credentials/ssl/ssl_credentials.c b/src/core/lib/security/credentials/ssl/ssl_credentials.c new file mode 100644 index 0000000000..545bca9d98 --- /dev/null +++ b/src/core/lib/security/credentials/ssl/ssl_credentials.c @@ -0,0 +1,240 @@ +/* + * + * 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}; + +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; +} |