| #pragma once |
| #ifdef BMCWEB_ENABLE_SSL |
| |
| #include <openssl/bio.h> |
| #include <openssl/dh.h> |
| #include <openssl/dsa.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #include <openssl/pem.h> |
| #include <openssl/rand.h> |
| #include <openssl/rsa.h> |
| #include <openssl/ssl.h> |
| |
| #include <boost/asio/ssl/context.hpp> |
| #include <random> |
| |
| namespace ensuressl |
| { |
| static void initOpenssl(); |
| static void cleanupOpenssl(); |
| static EVP_PKEY *createRsaKey(); |
| static EVP_PKEY *createEcKey(); |
| static void handleOpensslError(); |
| |
| inline bool verifyOpensslKeyCert(const std::string &filepath) |
| { |
| bool privateKeyValid = false; |
| bool certValid = false; |
| |
| std::cout << "Checking certs in file " << filepath << "\n"; |
| |
| FILE *file = fopen(filepath.c_str(), "r"); |
| if (file != NULL) |
| { |
| EVP_PKEY *pkey = PEM_read_PrivateKey(file, NULL, NULL, NULL); |
| int rc; |
| if (pkey != nullptr) |
| { |
| RSA *rsa = EVP_PKEY_get1_RSA(pkey); |
| if (rsa != nullptr) |
| { |
| std::cout << "Found an RSA key\n"; |
| if (RSA_check_key(rsa) == 1) |
| { |
| privateKeyValid = true; |
| } |
| else |
| { |
| std::cerr << "Key not valid error number " |
| << ERR_get_error() << "\n"; |
| } |
| RSA_free(rsa); |
| } |
| else |
| { |
| EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey); |
| if (ec != nullptr) |
| { |
| std::cout << "Found an EC key\n"; |
| if (EC_KEY_check_key(ec) == 1) |
| { |
| privateKeyValid = true; |
| } |
| else |
| { |
| std::cerr << "Key not valid error number " |
| << ERR_get_error() << "\n"; |
| } |
| EC_KEY_free(ec); |
| } |
| } |
| |
| if (privateKeyValid) |
| { |
| X509 *x509 = PEM_read_X509(file, NULL, NULL, NULL); |
| if (x509 == nullptr) |
| { |
| std::cout << "error getting x509 cert " << ERR_get_error() |
| << "\n"; |
| } |
| else |
| { |
| rc = X509_verify(x509, pkey); |
| if (rc == 1) |
| { |
| certValid = true; |
| } |
| else |
| { |
| std::cerr << "Error in verifying private key signature " |
| << ERR_get_error() << "\n"; |
| } |
| } |
| } |
| |
| EVP_PKEY_free(pkey); |
| } |
| fclose(file); |
| } |
| return certValid; |
| } |
| |
| inline void generateSslCertificate(const std::string &filepath) |
| { |
| FILE *pFile = NULL; |
| std::cout << "Generating new keys\n"; |
| initOpenssl(); |
| |
| // std::cerr << "Generating RSA key"; |
| // EVP_PKEY *pRsaPrivKey = create_rsa_key(); |
| |
| std::cerr << "Generating EC key\n"; |
| EVP_PKEY *pRsaPrivKey = createEcKey(); |
| if (pRsaPrivKey != nullptr) |
| { |
| std::cerr << "Generating x509 Certificate\n"; |
| // Use this code to directly generate a certificate |
| X509 *x509; |
| x509 = X509_new(); |
| if (x509 != nullptr) |
| { |
| // get a random number from the RNG for the certificate serial |
| // number If this is not random, regenerating certs throws broswer |
| // errors |
| std::random_device rd; |
| int serial = rd(); |
| |
| ASN1_INTEGER_set(X509_get_serialNumber(x509), serial); |
| |
| // not before this moment |
| X509_gmtime_adj(X509_get_notBefore(x509), 0); |
| // Cert is valid for 10 years |
| X509_gmtime_adj(X509_get_notAfter(x509), |
| 60L * 60L * 24L * 365L * 10L); |
| |
| // set the public key to the key we just generated |
| X509_set_pubkey(x509, pRsaPrivKey); |
| |
| // get the subject name |
| X509_NAME *name; |
| name = X509_get_subject_name(x509); |
| |
| X509_NAME_add_entry_by_txt( |
| name, "C", MBSTRING_ASC, |
| reinterpret_cast<const unsigned char *>("US"), -1, -1, 0); |
| X509_NAME_add_entry_by_txt( |
| name, "O", MBSTRING_ASC, |
| reinterpret_cast<const unsigned char *>("OpenBMC"), -1, -1, 0); |
| X509_NAME_add_entry_by_txt( |
| name, "CN", MBSTRING_ASC, |
| reinterpret_cast<const unsigned char *>("testhost"), -1, -1, 0); |
| // set the CSR options |
| X509_set_issuer_name(x509, name); |
| |
| // Sign the certificate with our private key |
| X509_sign(x509, pRsaPrivKey, EVP_sha256()); |
| |
| pFile = fopen(filepath.c_str(), "wt"); |
| |
| if (pFile != nullptr) |
| { |
| PEM_write_PrivateKey(pFile, pRsaPrivKey, NULL, NULL, 0, 0, |
| NULL); |
| |
| PEM_write_X509(pFile, x509); |
| fclose(pFile); |
| pFile = NULL; |
| } |
| |
| X509_free(x509); |
| } |
| |
| EVP_PKEY_free(pRsaPrivKey); |
| pRsaPrivKey = NULL; |
| } |
| |
| // cleanup_openssl(); |
| } |
| |
| EVP_PKEY *createRsaKey() |
| { |
| RSA *pRSA = NULL; |
| #if OPENSSL_VERSION_NUMBER < 0x00908000L |
| pRSA = RSA_generate_key(2048, RSA_3, NULL, NULL); |
| #else |
| RSA_generate_key_ex(pRSA, 2048, NULL, NULL); |
| #endif |
| |
| EVP_PKEY *pKey = EVP_PKEY_new(); |
| if ((pRSA != nullptr) && (pKey != nullptr) && |
| EVP_PKEY_assign_RSA(pKey, pRSA)) |
| { |
| /* pKey owns pRSA from now */ |
| if (RSA_check_key(pRSA) <= 0) |
| { |
| fprintf(stderr, "RSA_check_key failed.\n"); |
| handleOpensslError(); |
| EVP_PKEY_free(pKey); |
| pKey = NULL; |
| } |
| } |
| else |
| { |
| handleOpensslError(); |
| if (pRSA != nullptr) |
| { |
| RSA_free(pRSA); |
| pRSA = NULL; |
| } |
| if (pKey != nullptr) |
| { |
| EVP_PKEY_free(pKey); |
| pKey = NULL; |
| } |
| } |
| return pKey; |
| } |
| |
| EVP_PKEY *createEcKey() |
| { |
| EVP_PKEY *pKey = NULL; |
| int eccgrp = 0; |
| eccgrp = OBJ_txt2nid("prime256v1"); |
| |
| EC_KEY *myecc = EC_KEY_new_by_curve_name(eccgrp); |
| if (myecc != nullptr) |
| { |
| EC_KEY_set_asn1_flag(myecc, OPENSSL_EC_NAMED_CURVE); |
| EC_KEY_generate_key(myecc); |
| pKey = EVP_PKEY_new(); |
| if (pKey != nullptr) |
| { |
| if (EVP_PKEY_assign_EC_KEY(pKey, myecc)) |
| { |
| /* pKey owns pRSA from now */ |
| if (EC_KEY_check_key(myecc) <= 0) |
| { |
| fprintf(stderr, "EC_check_key failed.\n"); |
| } |
| } |
| } |
| } |
| return pKey; |
| } |
| |
| void initOpenssl() |
| { |
| #if OPENSSL_VERSION_NUMBER < 0x10100000L |
| SSL_load_error_strings(); |
| OpenSSL_add_all_algorithms(); |
| RAND_load_file("/dev/urandom", 1024); |
| #endif |
| } |
| |
| void cleanupOpenssl() |
| { |
| CRYPTO_cleanup_all_ex_data(); |
| ERR_free_strings(); |
| #if OPENSSL_VERSION_NUMBER < 0x10100000L |
| ERR_remove_thread_state(0); |
| #endif |
| EVP_cleanup(); |
| } |
| |
| void handleOpensslError() |
| { |
| ERR_print_errors_fp(stderr); |
| } |
| inline void ensureOpensslKeyPresentAndValid(const std::string &filepath) |
| { |
| bool pemFileValid = false; |
| |
| pemFileValid = verifyOpensslKeyCert(filepath); |
| |
| if (!pemFileValid) |
| { |
| std::cerr << "Error in verifying signature, regenerating\n"; |
| generateSslCertificate(filepath); |
| } |
| } |
| |
| inline std::shared_ptr<boost::asio::ssl::context> |
| getSslContext(const std::string &ssl_pem_file) |
| { |
| std::shared_ptr<boost::asio::ssl::context> mSslContext = |
| std::make_shared<boost::asio::ssl::context>( |
| boost::asio::ssl::context::tls_server); |
| mSslContext->set_options(boost::asio::ssl::context::default_workarounds | |
| boost::asio::ssl::context::no_sslv2 | |
| boost::asio::ssl::context::no_sslv3 | |
| boost::asio::ssl::context::single_dh_use | |
| boost::asio::ssl::context::no_tlsv1 | |
| boost::asio::ssl::context::no_tlsv1_1); |
| |
| // m_ssl_context.set_verify_mode(boost::asio::ssl::verify_peer); |
| mSslContext->use_certificate_file(ssl_pem_file, |
| boost::asio::ssl::context::pem); |
| mSslContext->use_private_key_file(ssl_pem_file, |
| boost::asio::ssl::context::pem); |
| |
| // Set up EC curves to auto (boost asio doesn't have a method for this) |
| // There is a pull request to add this. Once this is included in an asio |
| // drop, use the right way |
| // http://stackoverflow.com/questions/18929049/boost-asio-with-ecdsa-certificate-issue |
| if (SSL_CTX_set_ecdh_auto(mSslContext->native_handle(), 1) != 1) |
| { |
| BMCWEB_LOG_ERROR << "Error setting tmp ecdh list\n"; |
| } |
| |
| std::string mozillaModern = "ECDHE-ECDSA-AES256-GCM-SHA384:" |
| "ECDHE-RSA-AES256-GCM-SHA384:" |
| "ECDHE-ECDSA-CHACHA20-POLY1305:" |
| "ECDHE-RSA-CHACHA20-POLY1305:" |
| "ECDHE-ECDSA-AES128-GCM-SHA256:" |
| "ECDHE-RSA-AES128-GCM-SHA256:" |
| "ECDHE-ECDSA-AES256-SHA384:" |
| "ECDHE-RSA-AES256-SHA384:" |
| "ECDHE-ECDSA-AES128-SHA256:" |
| "ECDHE-RSA-AES128-SHA256"; |
| |
| if (SSL_CTX_set_cipher_list(mSslContext->native_handle(), |
| mozillaModern.c_str()) != 1) |
| { |
| BMCWEB_LOG_ERROR << "Error setting cipher list\n"; |
| } |
| return mSslContext; |
| } |
| } // namespace ensuressl |
| |
| #endif |