1 // 2 // 3 // Copyright 2016 gRPC authors. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 // 17 // 18 #ifndef GRPC_SRC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H 19 #define GRPC_SRC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H 20 21 #include <grpc/support/port_platform.h> 22 23 #include <stddef.h> 24 25 #include <grpc/grpc.h> 26 #include <grpc/grpc_security.h> 27 #include <grpc/grpc_security_constants.h> 28 #include <grpc/support/log.h> 29 30 #include "src/core/lib/channel/channel_args.h" 31 #include "src/core/lib/gpr/useful.h" 32 #include "src/core/lib/gprpp/ref_counted_ptr.h" 33 #include "src/core/lib/gprpp/unique_type_name.h" 34 #include "src/core/lib/security/credentials/credentials.h" 35 #include "src/core/lib/security/security_connector/security_connector.h" 36 #include "src/core/lib/security/security_connector/ssl/ssl_security_connector.h" 37 #include "src/core/tsi/ssl_transport_security.h" 38 39 class grpc_ssl_credentials : public grpc_channel_credentials { 40 public: 41 grpc_ssl_credentials(const char* pem_root_certs, 42 grpc_ssl_pem_key_cert_pair* pem_key_cert_pair, 43 const grpc_ssl_verify_peer_options* verify_options); 44 45 ~grpc_ssl_credentials() override; 46 47 grpc_core::RefCountedPtr<grpc_channel_security_connector> 48 create_security_connector( 49 grpc_core::RefCountedPtr<grpc_call_credentials> call_creds, 50 const char* target, grpc_core::ChannelArgs* args) override; 51 52 static grpc_core::UniqueTypeName Type(); 53 type()54 grpc_core::UniqueTypeName type() const override { return Type(); } 55 56 // TODO(mattstev): Plumb to wrapped languages. Until then, setting the TLS 57 // version should be done for testing purposes only. 58 void set_min_tls_version(grpc_tls_version min_tls_version); 59 void set_max_tls_version(grpc_tls_version max_tls_version); 60 61 private: cmp_impl(const grpc_channel_credentials * other)62 int cmp_impl(const grpc_channel_credentials* other) const override { 63 // TODO(yashykt): Check if we can do something better here 64 return grpc_core::QsortCompare( 65 static_cast<const grpc_channel_credentials*>(this), other); 66 } 67 68 void build_config(const char* pem_root_certs, 69 grpc_ssl_pem_key_cert_pair* pem_key_cert_pair, 70 const grpc_ssl_verify_peer_options* verify_options); 71 72 grpc_ssl_config config_; 73 }; 74 75 struct grpc_ssl_server_certificate_config { 76 grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs = nullptr; 77 size_t num_key_cert_pairs = 0; 78 char* pem_root_certs = nullptr; 79 }; 80 81 struct grpc_ssl_server_certificate_config_fetcher { 82 grpc_ssl_server_certificate_config_callback cb = nullptr; 83 void* user_data; 84 }; 85 86 class grpc_ssl_server_credentials final : public grpc_server_credentials { 87 public: 88 explicit grpc_ssl_server_credentials( 89 const grpc_ssl_server_credentials_options& options); 90 ~grpc_ssl_server_credentials() override; 91 92 grpc_core::RefCountedPtr<grpc_server_security_connector> 93 create_security_connector(const grpc_core::ChannelArgs& /* args */) override; 94 95 static grpc_core::UniqueTypeName Type(); 96 type()97 grpc_core::UniqueTypeName type() const override { return Type(); } 98 has_cert_config_fetcher()99 bool has_cert_config_fetcher() const { 100 return certificate_config_fetcher_.cb != nullptr; 101 } 102 FetchCertConfig(grpc_ssl_server_certificate_config ** config)103 grpc_ssl_certificate_config_reload_status FetchCertConfig( 104 grpc_ssl_server_certificate_config** config) { 105 GPR_DEBUG_ASSERT(has_cert_config_fetcher()); 106 return certificate_config_fetcher_.cb(certificate_config_fetcher_.user_data, 107 config); 108 } 109 110 // TODO(mattstev): Plumb to wrapped languages. Until then, setting the TLS 111 // version should be done for testing purposes only. 112 void set_min_tls_version(grpc_tls_version min_tls_version); 113 void set_max_tls_version(grpc_tls_version max_tls_version); 114 config()115 const grpc_ssl_server_config& config() const { return config_; } 116 117 private: 118 void build_config( 119 const char* pem_root_certs, 120 grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs, size_t num_key_cert_pairs, 121 grpc_ssl_client_certificate_request_type client_certificate_request); 122 123 grpc_ssl_server_config config_; 124 grpc_ssl_server_certificate_config_fetcher certificate_config_fetcher_; 125 }; 126 127 tsi_ssl_pem_key_cert_pair* grpc_convert_grpc_to_tsi_cert_pairs( 128 const grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs, 129 size_t num_key_cert_pairs); 130 131 #endif // GRPC_SRC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H 132