Implement handshake for AES-256-GCM by capturing TLS secrets (pretty shitty approach actually...)

Seems slightly overcomplicated...

docs/usage/nfs.en.md

@@ -262,3 +262,4 @@ Options:
 | `--logfile <FILE>` | log to the specified file                                |
 | `--enforce 1`      | enforce permissions at the server side (no by default)   |
 | `--foreground 1`   | stay in foreground, do not daemonize                     |
+| `--trace`          | trace all NFS requests                                   |

docs/usage/nfs.ru.md

@@ -274,3 +274,4 @@ VitastorFS из GPUDirect.
 | `--logfile <FILE>` | записывать логи в заданный файл                         |
 | `--enforce 1`      | проверять права доступа на стороне сервера (по умолчанию нет) |
 | `--foreground 1`   | не уходить в фон после запуска                          |
+| `--trace`          | логгировать все запросы NFS                             |

src/client/CMakeLists.txt

@@ -12,7 +12,7 @@ if (RDMACM_LIBRARIES)
 	set(MSGR_RDMACM "msgr_rdmacm.cpp")
 endif (RDMACM_LIBRARIES)
 add_library(vitastor_common STATIC
-	../util/epoll_manager.cpp etcd_state_client.cpp messenger.cpp ../util/addr_util.cpp ../util/xxh_x86dispatch.c
+	../util/epoll_manager.cpp etcd_state_client.cpp messenger.cpp ../util/addr_util.cpp ../util/xxh_x86dispatch.c ../util/openssl_util.cpp
 	msgr_encrypt.cpp msgr_stop.cpp msgr_op.cpp msgr_send.cpp msgr_receive.cpp ../util/ringloop.cpp ../../json11/json11.cpp
 	http_client.cpp osd_ops.cpp pg_states.cpp ../util/timerfd_manager.cpp ../util/str_util.cpp ../util/json_util.cpp ${MSGR_RDMA} ${MSGR_RDMACM}
 )
@@ -102,7 +102,7 @@ add_executable(test_cluster_client
 	EXCLUDE_FROM_ALL
 	../test/test_cluster_client.cpp
 	pg_states.cpp osd_ops.cpp cluster_client.cpp cluster_client_list.cpp cluster_client_wb.cpp cluster_client_icache.cpp msgr_op.cpp ../test/mock/messenger.cpp msgr_stop.cpp msgr_encrypt.cpp
-	etcd_state_client.cpp ../util/timerfd_manager.cpp ../util/addr_util.cpp ../util/str_util.cpp ../util/json_util.cpp ../util/xxh_x86dispatch.c ../../json11/json11.cpp
+	etcd_state_client.cpp ../util/timerfd_manager.cpp ../util/addr_util.cpp ../util/str_util.cpp ../util/json_util.cpp ../util/xxh_x86dispatch.c ../util/openssl_util.cpp ../../json11/json11.cpp
 )
 target_link_libraries(test_cluster_client ${OPENSSL_LIBRARIES} ${ISAL_CRYPTO_LIBRARIES})
 target_compile_definitions(test_cluster_client PUBLIC -D__MOCK__)

src/client/http_client.cpp

@@ -19,6 +19,7 @@
 #include <openssl/err.h>
 #include <openssl/pem.h>
 #include <openssl/ssl.h>
+#include "openssl_util.h"
 #endif
 
 // libc-ares
@@ -163,105 +164,6 @@ void http_ares_cb(void *data, ares_socket_t socket_fd, int readable, int writabl
     });
 }
 
-#ifdef WITH_OPENSSL
-bool openssl_ctx_add_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem)
-{
-    std::string pem;
-    BIO *bio = NULL;
-    if (file_or_pem.substr(0, 5) != "-----")
-    {
-        pem = read_file(file_or_pem);
-        bio = BIO_new_mem_buf(pem.data(), pem.size());
-    }
-    else
-        bio = BIO_new_mem_buf(file_or_pem.data(), file_or_pem.size());
-    if (!bio)
-        return false;
-    X509 *x509 = PEM_read_bio_X509(bio, NULL, 0, NULL);
-    bool ok = !!x509;
-    if (x509)
-    {
-        X509_STORE *store = SSL_CTX_get_cert_store(ssl_ctx);
-        X509_STORE_add_cert(store, x509);
-        X509_free(x509);
-    }
-    BIO_free(bio);
-    return ok;
-}
-
-bool openssl_ctx_use_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem)
-{
-    if (file_or_pem.substr(0, 5) == "-----")
-    {
-        return openssl_ctx_add_ca(ssl_ctx, file_or_pem);
-    }
-    return file_or_pem.empty()
-        ? !!SSL_CTX_set_default_verify_paths(ssl_ctx)
-        : !!SSL_CTX_load_verify_locations(ssl_ctx, file_or_pem.c_str(), NULL);
-}
-
-std::string openssl_get_cn(X509 *x509)
-{
-    X509_NAME* subj = X509_get_subject_name(x509);
-    int pos = X509_NAME_get_index_by_NID(subj, NID_commonName, -1);
-    if (pos != -1)
-    {
-        X509_NAME_ENTRY* cn = X509_NAME_get_entry(subj, pos);
-        ASN1_STRING* str = X509_NAME_ENTRY_get_data(cn);
-        return std::string((const char*)ASN1_STRING_get0_data(str), ASN1_STRING_length(str));
-    }
-    return "";
-}
-
-bool openssl_ctx_use_cert(SSL_CTX *ssl_ctx, const std::string & file_or_pem, std::string & common_name)
-{
-    BIO *bio = NULL;
-    std::string contents;
-    if (file_or_pem.substr(0, 5) == "-----")
-        bio = BIO_new_mem_buf(file_or_pem.data(), file_or_pem.size());
-    else
-    {
-        contents = read_file(file_or_pem);
-        if (!contents.size())
-            return false;
-        bio = BIO_new_mem_buf(contents.data(), contents.size());
-    }
-    if (!bio)
-        return false;
-    X509 *x509 = PEM_read_bio_X509(bio, NULL, 0, NULL);
-    bool ok = !!x509;
-    if (x509)
-    {
-        ok = SSL_CTX_use_certificate(ssl_ctx, x509);
-        if (ok)
-            common_name = openssl_get_cn(x509);
-        X509_free(x509);
-    }
-    BIO_free(bio);
-    return ok;
-}
-
-bool openssl_ctx_use_key(SSL_CTX *ssl_ctx, const std::string & file_or_pem)
-{
-    if (file_or_pem.substr(0, 5) == "-----")
-    {
-        BIO *bio = BIO_new_mem_buf(file_or_pem.data(), file_or_pem.size());
-        if (!bio)
-            return false;
-        EVP_PKEY *pkey = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
-        bool ok = !!pkey;
-        if (pkey)
-        {
-            ok = SSL_CTX_use_PrivateKey(ssl_ctx, pkey);
-            EVP_PKEY_free(pkey);
-        }
-        BIO_free(bio);
-        return ok;
-    }
-    return !!SSL_CTX_use_PrivateKey_file(ssl_ctx, file_or_pem.c_str(), SSL_FILETYPE_PEM);
-}
-#endif
-
 http_context_t* http_context_init(timerfd_manager_t *tfd, const std::string & ssl_cert, const std::string & ssl_key,
     const std::string & ssl_ca, bool verify_peer, std::string & error)
 {

src/client/http_client.h

@@ -8,10 +8,6 @@
 #include <functional>
 #include "json11/json11.hpp"
 
-#ifdef WITH_OPENSSL
-#include <openssl/types.h>
-#endif
-
 #define WS_CONTINUATION 0
 #define WS_TEXT 1
 #define WS_BINARY 2
@@ -73,11 +69,3 @@ void http_close(http_co_t *co);
 void http_destroy(http_co_t *co);
 
 #pragma GCC visibility pop
-
-#ifdef WITH_OPENSSL
-bool openssl_ctx_add_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem);
-bool openssl_ctx_use_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem);
-std::string openssl_get_cn(X509 *x509);
-bool openssl_ctx_use_cert(SSL_CTX *ssl_ctx, const std::string & file_or_pem, std::string & common_name);
-bool openssl_ctx_use_key(SSL_CTX *ssl_ctx, const std::string & file_or_pem);
-#endif

src/client/messenger.cpp

@@ -15,11 +15,6 @@
 #ifdef WITH_RDMA
 #include "msgr_rdma.h"
 #endif
-#include "http_client.h"
-#include <openssl/bio.h>
-#include <openssl/err.h>
-#include <openssl/pem.h>
-#include <openssl/ssl.h>
 
 #include <sys/poll.h>
 
@@ -123,44 +118,7 @@ void msgr_iothread_t::run()
 
 void osd_messenger_t::init()
 {
-    if (!tls_cert.empty() || !tls_key.empty() || !osd_tls_ca.empty() || !client_tls_ca.empty())
-    {
-        // Initialize TLS context
-        if (tls_cert.empty() || tls_key.empty() || osd_tls_ca.empty() || osd_num && client_tls_ca.empty())
-        {
-            if (osd_num)
-                fprintf(stderr, "Vitastor OSD TLS requires osd_tls_cert, osd_tls_key, osd_tls_ca, client_tls_ca\n");
-            else
-                fprintf(stderr, "Vitastor client TLS requires tls_cert, tls_key and osd_tls_ca\n");
-            exit(1);
-        }
-        else
-        {
-            ssl_ctx = SSL_CTX_new(TLS_method());
-            if (!ssl_ctx)
-            {
-init_err:
-                fprintf(stderr, "OpenSSL initialization failed: %s\n", ERR_error_string(ERR_get_error(), NULL));
-                exit(1);
-            }
-            SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_PEER, NULL);
-            bool ok = SSL_CTX_set_min_proto_version(ssl_ctx, TLS1_3_VERSION);
-            ok = ok && openssl_ctx_add_ca(ssl_ctx, osd_tls_ca);
-            if (osd_num)
-            {
-                // OSD uses 2 separate root certificates to distinguish between clients and peer OSDs
-                ok = ok && openssl_ctx_add_ca(ssl_ctx, client_tls_ca);
-            }
-            ok = ok && openssl_ctx_use_cert(ssl_ctx, tls_cert, tls_cn);
-            ok = ok && openssl_ctx_use_key(ssl_ctx, tls_key);
-            if (!ok)
-            {
-                SSL_CTX_free(ssl_ctx);
-                ssl_ctx = NULL;
-                goto init_err;
-            }
-        }
-    }
+    init_tls();
 #ifdef WITH_RDMACM
     if (use_rdmacm)
     {
@@ -347,30 +305,7 @@ osd_messenger_t::~osd_messenger_t()
     {
         destroy_aes_xts_decrypt(decrypt_ctx);
     }
-#ifdef WITH_ISAL_CRYPTO
-    for (isal_gcm_context_data *ctx: encrypt_gcm_pool)
-    {
-        free(ctx);
-    }
-    for (isal_gcm_context_data *ctx: decrypt_gcm_pool)
-    {
-        free(ctx);
-    }
-#else
-    for (EVP_CIPHER_CTX *ctx: encrypt_gcm_pool)
-    {
-        EVP_CIPHER_CTX_free(ctx);
-    }
-    for (EVP_CIPHER_CTX *ctx: decrypt_gcm_pool)
-    {
-        EVP_CIPHER_CTX_free(ctx);
-    }
-#endif
-    if (ssl_ctx)
-    {
-        SSL_CTX_free(ssl_ctx);
-        ssl_ctx = NULL;
-    }
+    destroy_tls();
 }
 
 void osd_messenger_t::parse_config(const json11::Json & config)
@@ -429,15 +364,6 @@ void osd_messenger_t::parse_config(const json11::Json & config)
         osd_tls_ca = config["osd_tls_ca"].string_value();
         client_tls_ca = config["client_tls_ca"].string_value();
     }
-    test_osd_aes_key.resize(32);
-    if (fromhexstr(config["test_osd_aes_key"].string_value(), 32, (uint8_t*)test_osd_aes_key.data()) != 32)
-        test_osd_aes_key.clear();
-    else
-    {
-#ifdef WITH_ISAL_CRYPTO
-        isal_aes_gcm_pre_256(test_osd_aes_key.data(), &test_osd_aes_key_isal);
-#endif
-    }
     if (!osd_num)
         this->iothread_count = (uint32_t)config["client_iothread_count"].uint64_value();
     else
@@ -668,7 +594,7 @@ void osd_messenger_t::handle_connect_epoll(int peer_fd)
         handle_peer_epoll(peer_fd, epoll_events);
     });
     // Check OSD number
-    ssl_init(cl, false);
+    init_tls_client(cl);
     check_peer_config(cl);
 }
 
@@ -910,7 +836,7 @@ void osd_messenger_t::accept_connections(int listen_fd)
         cl->peer_fd = peer_fd;
         cl->peer_state = PEER_CONNECTED;
         cl->in_buf = (uint8_t*)malloc_or_die(receive_buffer_size);
-        ssl_init(cl, true);
+        init_tls_client(cl);
         // Add FD to epoll
         tfd->set_fd_handler(peer_fd, false, [this](int peer_fd, int epoll_events)
         {
@@ -925,36 +851,6 @@ void osd_messenger_t::accept_connections(int listen_fd)
     }
 }
 
-void osd_messenger_t::ssl_init(osd_client_t *cl, bool server_mode)
-{
-    if (!tls_cert.empty())
-    {
-        cl->write_to_ssl = BIO_new(BIO_s_mem());
-        cl->read_from_ssl = BIO_new(BIO_s_mem());
-        cl->ssl_cli = SSL_new(ssl_ctx);
-        if (!cl->ssl_cli)
-        {
-            fprintf(stderr, "OpenSSL initialization failed: %s\n", ERR_error_string(ERR_get_error(), NULL));
-            exit(1);
-        }
-        if (server_mode)
-        {
-            SSL_set_accept_state(cl->ssl_cli);
-        }
-        else
-        {
-            SSL_set_connect_state(cl->ssl_cli);
-        }
-        SSL_set_bio(cl->ssl_cli, cl->write_to_ssl, cl->read_from_ssl);
-        bool ok = ssl_do_handshake(cl);
-        assert(ok);
-    }
-    else if (!test_osd_aes_key.empty())
-    {
-        cl->gcm_enabled = true;
-    }
-}
-
 #ifdef WITH_RDMA
 msgr_rdma_context_t* osd_messenger_t::choose_rdma_context(osd_client_t *cl)
 {

src/client/messenger.h

@@ -46,6 +46,9 @@
 
 #define DEFAULT_MIN_ZEROCOPY_SEND_SIZE 32*1024
 
+#define AES_256_GCM_KEY_SIZE 32
+#define AES_256_GCM_IV_SIZE 12
+
 struct msgr_sendp_t
 {
     osd_op_t *op;
@@ -98,13 +101,17 @@ struct osd_client_t
     BIO *read_from_ssl = NULL;
     uint8_t *ssl_out_buf = NULL;
     size_t ssl_out_buf_size = 0, ssl_out_buf_cap = 0;
-    bool ssl_handshake_done = false;
+    int ssl_handshake_pending = 0;
     msgr_tls_record_hdr_t ssl_read_record;
     size_t ssl_read_header_size = 0;
     bool ssl_more_to_buffer = false;
 
     bool gcm_enabled = false;
+    std::vector<uint8_t> my_secret, peer_secret;
+    std::vector<uint8_t> my_key, peer_key;
+    uint64_t my_iv_ctr, peer_iv_ctr;
 #ifdef WITH_ISAL_CRYPTO
+    isal_gcm_key_data my_key_isal, peer_key_isal;
     isal_gcm_context_data *enc_ctx = NULL;
     isal_gcm_context_data *dec_ctx = NULL;
 #else
@@ -266,10 +273,6 @@ protected:
     std::string tls_key;
     std::string osd_tls_ca;
     std::string client_tls_ca;
-    std::string test_osd_aes_key; // FIXME Insecure, only for PoC tests
-#ifdef WITH_ISAL_CRYPTO
-    isal_gcm_key_data test_osd_aes_key_isal;
-#endif
 
 #ifdef WITH_RDMA
     bool use_rdma = true;
@@ -288,10 +291,18 @@ protected:
 #endif
 
     SSL_CTX *ssl_ctx = NULL;
+    EVP_KDF_CTX *kdf_ctx = NULL;
+    X509 *tls_cert_obj = NULL;
+    X509 *osd_tls_ca_obj = NULL;
+    X509 *client_tls_ca_obj = NULL;
     std::string tls_cn;
 
-    void ssl_init(osd_client_t *cl, bool server_mode);
-    bool ssl_do_handshake(osd_client_t *cl);
+    void init_tls();
+    void destroy_tls();
+    void init_tls_client(osd_client_t *cl);
+    bool do_tls_handshake(osd_client_t *cl, bool from_recv = false);
+    bool finalize_tls_handshake(osd_client_t *cl);
+    bool derive_aes_keys(osd_client_t *cl, bool update_my, bool update_peer);
 
     std::vector<msgr_iothread_t*> iothreads;
     std::vector<uint64_t> read_ready_clients;
@@ -386,7 +397,7 @@ protected:
 
     void handle_read(int result, osd_client_t *cl);
     bool handle_read_buffer(osd_client_t *cl, uint8_t *curbuf, size_t bufsize);
-    template<typename T> bool handle_buffer_with(osd_client_t *cl, uint8_t *curbuf, size_t bufsize);
+    template<typename T> size_t handle_buffer_with(osd_client_t *cl, uint8_t *curbuf, size_t bufsize);
     bool handle_hdr(osd_client_t *cl);
     bool allocate_op_buffers(osd_client_t *cl);
     bool allocate_reply_buffers(osd_client_t *cl, osd_op_t *op);

src/client/msgr_encrypt.cpp

@@ -7,9 +7,22 @@
 #include <isa-l_crypto/isal_crypto_api.h>
 #endif
 
+#include <mutex>
+
+#include "str_util.h"
 #include "etcd_state_client.h"
 #include "messenger.h"
 #include "msgr_encrypt.h"
+#include "http_client.h"
+#include "openssl_util.h"
+
+#include <openssl/kdf.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+
+#define MSGR_HSP_HS   1
+#define MSGR_HSP_SEND 2
+#define MSGR_HSP_RECV 4
 
 op_aes_xts_encrypt_t::op_aes_xts_encrypt_t()
 {
@@ -479,3 +492,303 @@ void osd_messenger_t::op_encrypt_free(osd_client_t* cl)
         cl->xts_enc_ctx = NULL;
     }
 }
+
+struct tls_secrets_t
+{
+    std::vector<uint8_t> client_secret;
+    std::vector<uint8_t> server_secret;
+};
+
+// Sadly we have to use a global variable to capture TLS 1.3 secrets
+static std::mutex logged_secrets_mu;
+static std::map<const SSL*, tls_secrets_t> logged_secrets;
+
+static void openssl_key_log(const SSL *ssl, const char *line)
+{
+    // Format: <CLIENT|SERVER>_TRAFFIC_SECRET_0 <server_random> <secret>
+    bool is_client_secret = !strncmp(line, "CLIENT_TRAFFIC_SECRET_0 ", strlen("CLIENT_TRAFFIC_SECRET_0 "));
+    bool is_server_secret = !strncmp(line, "SERVER_TRAFFIC_SECRET_0 ", strlen("SERVER_TRAFFIC_SECRET_0 "));
+    if (!is_client_secret && !is_server_secret)
+        return;
+    const char *hex = strchr(line+strlen("CLIENT_TRAFFIC_SECRET_0 "), ' ');
+    if (!hex)
+        return;
+    hex++;
+    size_t len = strlen(hex);
+    logged_secrets_mu.lock();
+    auto & secrets = logged_secrets[ssl];
+    logged_secrets_mu.unlock();
+    auto & secret = is_client_secret ? secrets.client_secret : secrets.server_secret;
+    secret.resize(len/2);
+    fromhexstr(hex, len, secret.data(), secret.size());
+}
+
+static bool derive_kdf(EVP_KDF_CTX* kdf_ctx, const uint8_t* insecret, size_t insecret_len,
+    const uint8_t* salt, size_t salt_len, const char *label, uint8_t *key, size_t size)
+{
+    OSSL_PARAM params[5];
+    int n = 0;
+    params[n++] = OSSL_PARAM_construct_utf8_string("digest", (char*)"sha384", (size_t)7);
+    params[n++] = OSSL_PARAM_construct_octet_string("key", (void*)insecret, insecret_len);
+    params[n++] = OSSL_PARAM_construct_octet_string("info", (void*)label, strlen(label)+1);
+    if (salt)
+        params[n++] = OSSL_PARAM_construct_octet_string("salt", (void*)salt, salt_len);
+    params[n++] = OSSL_PARAM_construct_end();
+    assert(n <= sizeof(params)/sizeof(OSSL_PARAM));
+    if (EVP_KDF_CTX_set_params(kdf_ctx, params) <= 0)
+    {
+        ERR_print_errors_fp(stderr);
+        return false;
+    }
+    if (EVP_KDF_derive(kdf_ctx, key, size, NULL) <= 0)
+    {
+        ERR_print_errors_fp(stderr);
+        return false;
+    }
+    return true;
+}
+
+bool osd_messenger_t::derive_aes_keys(osd_client_t *cl, bool update_my, bool update_peer)
+{
+    std::vector<uint8_t> old_my = cl->my_key, old_peer = cl->peer_key;
+    if (!cl->my_secret.size() || !cl->peer_secret.size())
+    {
+        assert(cl->ssl_cli);
+        logged_secrets_mu.lock();
+        auto & secrets = logged_secrets[cl->ssl_cli];
+        cl->my_secret = std::move(cl->is_incoming ? secrets.client_secret : secrets.server_secret);
+        cl->peer_secret = std::move(!cl->is_incoming ? secrets.client_secret : secrets.server_secret);
+        logged_secrets.erase(cl->ssl_cli);
+        logged_secrets_mu.unlock();
+        SSL_free(cl->ssl_cli);
+        cl->ssl_cli = NULL;
+        cl->gcm_enabled = true;
+        cl->write_to_ssl = NULL;
+        cl->read_from_ssl = NULL;
+        if (cl->my_secret.size() < 32 || cl->peer_secret.size() < 32)
+        {
+            fprintf(stderr, "Client %ju error: failed to capture TLS handshake results\n", cl->client_id);
+            return false;
+        }
+    }
+    // Both keys include AES key and iv + xxhash3 secret
+    const auto len = AES_256_GCM_KEY_SIZE + AES_256_GCM_IV_SIZE + XXH_SECRET_DEFAULT_SIZE;
+    cl->my_key.resize(len);
+    cl->peer_key.resize(len);
+    bool ok = true;
+    if (update_my || !old_my.size())
+    {
+        ok = ok && derive_kdf(kdf_ctx, cl->my_secret.data(), cl->my_secret.size(),
+            old_my.size() ? old_my.data() : NULL, old_my.size(),
+            cl->is_incoming ? "server key" : "client key",
+            cl->my_key.data(), len);
+#ifdef WITH_ISAL_CRYPTO
+        if (ok)
+            isal_aes_gcm_pre_256(cl->my_key.data(), &cl->my_key_isal);
+#endif
+        cl->my_iv_ctr = 0;
+    }
+    if (update_peer || !old_peer.size())
+    {
+        ok = ok && derive_kdf(kdf_ctx, cl->peer_secret.data(), cl->peer_secret.size(),
+            old_peer.size() ? old_peer.data() : NULL, old_peer.size(),
+            !cl->is_incoming ? "server key" : "client key",
+            cl->peer_key.data(), len);
+#ifdef WITH_ISAL_CRYPTO
+        if (ok)
+            isal_aes_gcm_pre_256(cl->peer_key.data(), &cl->peer_key_isal);
+#endif
+        cl->peer_iv_ctr = 0;
+    }
+    return ok;
+}
+
+void osd_messenger_t::init_tls()
+{
+    if (!tls_cert.empty() || !tls_key.empty() || !osd_tls_ca.empty() || !client_tls_ca.empty())
+    {
+        // Initialize TLS context
+        if (tls_cert.empty() || tls_key.empty() || osd_tls_ca.empty() || osd_num && client_tls_ca.empty())
+        {
+            if (osd_num)
+                fprintf(stderr, "Vitastor OSD TLS requires osd_tls_cert, osd_tls_key, osd_tls_ca, client_tls_ca\n");
+            else
+                fprintf(stderr, "Vitastor client TLS requires tls_cert, tls_key and osd_tls_ca\n");
+            exit(1);
+        }
+        else
+        {
+            ssl_ctx = SSL_CTX_new(TLS_method());
+            if (!ssl_ctx)
+            {
+init_err:
+                fprintf(stderr, "OpenSSL initialization failed: %s\n", ERR_error_string(ERR_get_error(), NULL));
+                exit(1);
+            }
+            // Always use TLS 1.3 with AES-256-GCM
+            SSL_CTX_set_min_proto_version(ssl_ctx, TLS1_3_VERSION);
+            SSL_CTX_set_max_proto_version(ssl_ctx, TLS1_3_VERSION);
+            SSL_CTX_set_ciphersuites(ssl_ctx, "TLS_AES_256_GCM_SHA384");
+            SSL_CTX_set_keylog_callback(ssl_ctx, openssl_key_log);
+            SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_PEER, NULL);
+            bool ok = SSL_CTX_set_min_proto_version(ssl_ctx, TLS1_3_VERSION);
+            ok = ok && (osd_tls_ca_obj = openssl_load_cert(osd_tls_ca));
+            ok = ok && X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), osd_tls_ca_obj);
+            if (osd_num)
+            {
+                // OSD uses 2 separate root certificates to distinguish between clients and peer OSDs
+                ok = ok && (client_tls_ca_obj = openssl_load_cert(client_tls_ca));
+                ok = ok && X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), client_tls_ca_obj);
+            }
+            ok = ok && openssl_ctx_use_cert(ssl_ctx, tls_cert, tls_cn);
+            ok = ok && openssl_ctx_use_key(ssl_ctx, tls_key);
+            EVP_KDF *kdf;
+            ok = ok && (kdf = EVP_KDF_fetch(NULL, "hkdf", NULL));
+            ok = ok && (kdf_ctx = EVP_KDF_CTX_new(kdf));
+            if (kdf)
+                EVP_KDF_free(kdf);
+            if (!ok)
+            {
+                SSL_CTX_free(ssl_ctx);
+                ssl_ctx = NULL;
+                goto init_err;
+            }
+        }
+    }
+}
+
+void osd_messenger_t::init_tls_client(osd_client_t *cl)
+{
+    if (!tls_cert.empty())
+    {
+        cl->write_to_ssl = BIO_new(BIO_s_mem());
+        cl->read_from_ssl = BIO_new(BIO_s_mem());
+        cl->ssl_cli = SSL_new(ssl_ctx);
+        cl->ssl_handshake_pending = MSGR_HSP_HS;
+        if (!cl->ssl_cli)
+        {
+            fprintf(stderr, "OpenSSL initialization failed: %s\n", ERR_error_string(ERR_get_error(), NULL));
+            exit(1);
+        }
+        if (cl->is_incoming)
+        {
+            SSL_set_accept_state(cl->ssl_cli);
+        }
+        else
+        {
+            SSL_set_connect_state(cl->ssl_cli);
+        }
+        SSL_set_bio(cl->ssl_cli, cl->write_to_ssl, cl->read_from_ssl);
+        bool ok = do_tls_handshake(cl);
+        assert(ok);
+    }
+}
+
+bool osd_messenger_t::do_tls_handshake(osd_client_t *cl, bool from_recv)
+{
+    if (!(cl->ssl_handshake_pending & MSGR_HSP_HS))
+        return true;
+    int r = SSL_do_handshake(cl->ssl_cli);
+    if (r > 0)
+    {
+        // Server-side OpenSSL treats handshake as finalized only when receiving
+        // the first message, so we transmit 1 byte after connecting and only then
+        // finalize the handshake
+        cl->ssl_handshake_pending = MSGR_HSP_SEND|MSGR_HSP_RECV;
+        if (cl->write_state == 0 && from_recv)
+        {
+            cl->write_state = CL_WRITE_READY;
+            write_ready_clients.push_back(cl->client_id);
+        }
+    }
+    else
+    {
+        r = SSL_get_error(cl->ssl_cli, r);
+        if (r != 0 && r != SSL_ERROR_WANT_READ && r != SSL_ERROR_WANT_WRITE)
+        {
+            fprintf(stderr, "Client %ju TLS handshake error: %s, stopping client\n", cl->client_id, ERR_error_string(ERR_get_error(), NULL));
+            cl->io_error = true;
+            return false;
+        }
+        if (from_recv && cl->write_state == 0 && openssl_bio_nonempty(cl->read_from_ssl))
+        {
+            cl->write_state = CL_WRITE_READY;
+            write_ready_clients.push_back(cl->client_id);
+        }
+    }
+    return true;
+}
+
+bool osd_messenger_t::finalize_tls_handshake(osd_client_t *cl)
+{
+    if (cl->ssl_handshake_pending)
+        return true;
+    // Capture secrets and switch to direct AES-256-GCM encryption
+    if (!derive_aes_keys(cl, true, true))
+    {
+        cl->io_error = true;
+        return false;
+    }
+    if (cl->read_op)
+    {
+        assert(!cl->read_op_pos);
+        delete cl->read_op;
+        cl->read_op = NULL;
+    }
+    if (cl->write_op)
+    {
+        assert(!cl->write_op_pos);
+        cl->write_ops.insert(cl->write_ops.begin(), cl->write_op);
+        cl->write_op = NULL;
+    }
+    if (cl->write_state == 0)
+    {
+        cl->write_state = CL_WRITE_READY;
+        write_ready_clients.push_back(cl->client_id);
+    }
+    // Switched to direct AES-GCM, stop SSL callers
+    return false;
+}
+
+void osd_messenger_t::destroy_tls()
+{
+#ifdef WITH_ISAL_CRYPTO
+    for (isal_gcm_context_data *ctx: encrypt_gcm_pool)
+    {
+        free(ctx);
+    }
+    for (isal_gcm_context_data *ctx: decrypt_gcm_pool)
+    {
+        free(ctx);
+    }
+#else
+    for (EVP_CIPHER_CTX *ctx: encrypt_gcm_pool)
+    {
+        EVP_CIPHER_CTX_free(ctx);
+    }
+    for (EVP_CIPHER_CTX *ctx: decrypt_gcm_pool)
+    {
+        EVP_CIPHER_CTX_free(ctx);
+    }
+#endif
+    if (osd_tls_ca_obj)
+    {
+        X509_free(osd_tls_ca_obj);
+        osd_tls_ca_obj = NULL;
+    }
+    if (client_tls_ca_obj)
+    {
+        X509_free(client_tls_ca_obj);
+        client_tls_ca_obj = NULL;
+    }
+    if (ssl_ctx)
+    {
+        SSL_CTX_free(ssl_ctx);
+        ssl_ctx = NULL;
+    }
+    if (kdf_ctx)
+    {
+        EVP_KDF_CTX_free(kdf_ctx);
+        kdf_ctx = NULL;
+    }
+}

src/client/msgr_op.cpp

@@ -8,6 +8,7 @@
 osd_op_t::~osd_op_t()
 {
     assert(!bs_op);
+    assert(!op_data);
     if (bitmap_buf)
     {
         free(bitmap_buf);
@@ -26,10 +27,6 @@ osd_op_t::~osd_op_t()
     {
         free(enc_buf);
     }
-    if (op_data)
-    {
-        free(op_data);
-    }
 }
 
 bool osd_op_t::is_recovery_related()

src/client/msgr_rdma.cpp

@@ -590,36 +590,7 @@ void osd_messenger_t::try_send_rdma(osd_client_t *cl)
     while (!rc->send_out_full && copied > 0 && rc->cur_send < rc->max_send)
     {
         dst = (uint8_t*)rc->send_out.buf + rc->send_out_pos;
-        if (rc->send_out_pos >= rc->send_done_pos)
-        {
-            dst_len = rc->send_out_size-rc->send_out_pos;
-            if (dst_len < 4096)
-            {
-                // free end of the buffer is too small, skip
-                rc->send_out_pos = 0;
-                if (rc->send_out_pos >= rc->send_done_pos)
-                    rc->send_out_full = true;
-                if (!rc->send_sizes.size())
-                {
-                    rc->send_done_pos += dst_len;
-                    rc->send_out_full = false;
-                    if (rc->send_done_pos == rc->send_out_size)
-                        rc->send_done_pos = 0;
-                }
-                else
-                    rc->send_sizes.back() += dst_len;
-                continue;
-            }
-        }
-        else
-        {
-            dst_len = rc->send_done_pos-rc->send_out_pos;
-            if (dst_len < 4096)
-            {
-                // too small buffer, stop
-                break;
-            }
-        }
+        dst_len = (rc->send_out_pos < rc->send_out_size ? rc->send_out_size-rc->send_out_pos : rc->send_done_pos-rc->send_out_pos);
         if (dst_len > rc->max_msg)
             dst_len = rc->max_msg;
         copied = copy_ops_to(cl, dst, dst_len);

src/client/msgr_rdmacm.cpp

@@ -19,6 +19,7 @@ struct rdmacm_connecting_t
     int tcp_port = 0;
     int timeout_ms = 0;
     int timeout_id = -1;
+    bool is_incoming = false;
     msgr_rdma_context_t *rdma_context = NULL;
 };
 
@@ -292,6 +293,7 @@ void osd_messenger_t::rdmacm_accept(rdma_cm_event *ev)
     conn->client_id = next_client_id++;
     conn->parsed_addr = *(sockaddr_storage*)rdma_get_peer_addr(ev->id);
     conn->rdma_context = rdma_context;
+    conn->is_incoming = true;
     rdmacm_set_conn_timeout(conn);
     rdmacm_connecting[ev->id] = conn;
     fprintf(stderr, "[OSD %ju] new client %ju: connection from %s via RDMA-CM\n", this->osd_num, conn->client_id,
@@ -492,11 +494,13 @@ void osd_messenger_t::rdmacm_established(rdma_cm_event *ev)
     cl->peer_addr = conn->parsed_addr;
     cl->peer_port = conn->rdmacm_port;
     cl->client_id = conn->client_id;
+    cl->is_incoming = conn->is_incoming;
     cl->peer_state = PEER_RDMA;
     cl->connect_timeout_id = -1;
     cl->osd_num = peer_osd;
     cl->in_buf = (uint8_t*)malloc_or_die(receive_buffer_size);
     cl->rdma_conn = rc;
+    init_tls_client(cl);
     clients[conn->client_id] = cl;
     if (conn->timeout_id >= 0)
     {

src/client/msgr_receive.cpp

@@ -4,16 +4,21 @@
 #define _XOPEN_SOURCE
 #include <limits.h>
 #include "messenger.h"
+#include "openssl_util.h"
 
 #include <openssl/bio.h>
 #include <openssl/err.h>
 #include <openssl/pem.h>
 #include <openssl/ssl.h>
 
-#define RDR_TLS     1
+#define RDR_GCM     1
 #define RDR_XTS     2
 #define RDR_NO_CSUM 4
 
+#define MSGR_HSP_HS   1
+#define MSGR_HSP_SEND 2
+#define MSGR_HSP_RECV 4
+
 class msgr_op_reader_t
 {
 public:
@@ -99,6 +104,30 @@ class ssl_op_reader_t: public msgr_op_reader_t
     size_t bufsize;
     size_t done;
 
+    bool read_ssl(void *buf, size_t & len)
+    {
+        int ok = SSL_read_ex(cl->ssl_cli, buf, len, &len);
+        if (ok > 0)
+        {
+            return true;
+        }
+        len = 0;
+        ok = SSL_get_error(cl->ssl_cli, ok);
+        if (ok == SSL_ERROR_ZERO_RETURN)
+        {
+            fprintf(stderr, "Client %ju TLS disconnected\n", cl->client_id);
+            cl->io_error = true;
+            return false;
+        }
+        else if (ok != 0 && ok != SSL_ERROR_WANT_WRITE && ok != SSL_ERROR_WANT_READ)
+        {
+            fprintf(stderr, "Client %ju TLS read error: %s. Disconnecting client\n", cl->client_id, ERR_error_string(ERR_get_error(), NULL));
+            cl->io_error = true;
+            return false;
+        }
+        return true;
+    }
+
 public:
     ssl_op_reader_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t *curbuf, size_t bufsize):
         msgr(msgr), cl(cl), from(cl->read_op_pos), curbuf(curbuf), bufsize(bufsize), done(0)
@@ -166,7 +195,7 @@ public:
         if (done >= bufsize)
             return false;
         size_t n = dst_len-from;
-        if (!(flags & RDR_TLS) || !cl->ssl_cli)
+        if (!(flags & RDR_GCM) || !cl->ssl_cli)
         {
             if (n > bufsize-done)
                 n = bufsize-done;
@@ -200,42 +229,31 @@ public:
             assert(dst != NULL);
 buffer_again:
             buffer_encrypted();
-            if (!cl->ssl_handshake_done)
+            if (cl->ssl_handshake_pending)
             {
-                if (!msgr->ssl_do_handshake(cl))
+                if (!msgr->do_tls_handshake(cl, true))
                     return false;
-                if (cl->write_state == 0)
+                if (cl->ssl_handshake_pending & MSGR_HSP_RECV)
                 {
-                    // SSL_ERROR_WANT_WRITE is absolutely non-informative with memory BIO, it basically never happens
-                    // So we have to check memory BIO for outstanding data
-                    char *bio_buf = NULL;
-                    size_t bio_sz = BIO_get_mem_data(cl->read_from_ssl, &bio_buf);
-                    if (bio_sz > 0)
+                    uint8_t first_byte = 0;
+                    size_t b = 1;
+                    if (!read_ssl(&first_byte, b))
+                        return false;
+                    if (!b)
                     {
-                        cl->write_state = CL_WRITE_READY;
-                        msgr->write_ready_clients.push_back(cl->client_id);
+                        if (done < bufsize)
+                            goto buffer_again;
+                        return false;
                     }
+                    cl->ssl_handshake_pending &= ~MSGR_HSP_RECV;
+                    if (!msgr->finalize_tls_handshake(cl))
+                        return false;
                 }
             }
-            int ok = SSL_read_ex(cl->ssl_cli, dst+from, n, &n);
-            if (!ok)
+            if (!read_ssl(dst+from, n))
             {
-                ok = SSL_get_error(cl->ssl_cli, ok);
-                if (ok == SSL_ERROR_WANT_READ)
-                {
-                    if (done < bufsize)
-                        goto buffer_again;
-                }
-                else if (ok == SSL_ERROR_ZERO_RETURN)
-                {
-                    fprintf(stderr, "Client %ju TLS disconnected\n", cl->client_id);
-                    cl->io_error = true;
-                }
-                else if (ok != 0 && ok != SSL_ERROR_WANT_WRITE)
-                {
-                    fprintf(stderr, "Client %ju TLS read error: %s. Disconnecting client\n", cl->client_id, ERR_error_string(ERR_get_error(), NULL));
-                    cl->io_error = true;
-                }
+                if (done < bufsize)
+                    goto buffer_again;
                 return false;
             }
             if (cl->read_csum_state && !(flags & RDR_NO_CSUM))
@@ -309,16 +327,15 @@ public:
 #endif
             }
         }
-        uint8_t iv[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
 #ifdef WITH_ISAL_CRYPTO
-        int r = isal_aes_gcm_init_256(&msgr->test_osd_aes_key_isal, cl->dec_ctx, iv, NULL, 0);
+        int r = isal_aes_gcm_init_256(&cl->peer_key_isal, cl->dec_ctx, cl->peer_key.data() + AES_256_GCM_KEY_SIZE, NULL, 0);
         if (r != 0)
         {
             fprintf(stderr, "isal_aes_gcm_init_256 error %d\n", r);
             abort();
         }
 #else
-        int r = EVP_DecryptInit_ex(cl->dec_ctx, NULL, NULL, (uint8_t*)msgr->test_osd_aes_key.data(), iv);
+        int r = EVP_DecryptInit_ex(cl->dec_ctx, NULL, NULL, cl->peer_key.data(), cl->peer_key.data() + AES_256_GCM_KEY_SIZE);
         if (r != 1)
         {
             fprintf(stderr, "DecryptInit error: ");
@@ -326,6 +343,9 @@ public:
             abort();
         }
 #endif
+        // Increase IV
+        cl->peer_iv_ctr++;
+        (*(uint64_t*)(cl->peer_key.data() + AES_256_GCM_KEY_SIZE))++;
     }
 
     bool read(uint8_t *dst, size_t dst_len, int flags) override
@@ -339,7 +359,7 @@ public:
         if (done >= bufsize)
             return false;
         size_t n = dst_len-from;
-        if (!(flags & RDR_TLS))
+        if (!(flags & RDR_GCM))
         {
             if (n > bufsize-done)
                 n = bufsize-done;
@@ -375,7 +395,7 @@ public:
             if (n > bufsize-done)
                 n = bufsize-done;
 #ifdef WITH_ISAL_CRYPTO
-            int r = isal_aes_gcm_dec_256_update(&msgr->test_osd_aes_key_isal, cl->dec_ctx, dst+from, curbuf+done, n);
+            int r = isal_aes_gcm_dec_256_update(&cl->peer_key_isal, cl->dec_ctx, dst+from, curbuf+done, n);
             assert(!r);
 #else
             int actual_out;
@@ -415,7 +435,7 @@ public:
         }
 #ifdef WITH_ISAL_CRYPTO
         uint8_t calc_tag[16];
-        int r = isal_aes_gcm_dec_256_finalize(&msgr->test_osd_aes_key_isal, cl->dec_ctx, calc_tag, 16);
+        int r = isal_aes_gcm_dec_256_finalize(&cl->peer_key_isal, cl->dec_ctx, calc_tag, 16);
         assert(r == 0);
         if (cl->dec_tag_size > 0)
         {
@@ -528,17 +548,15 @@ public:
 
     bool read(uint8_t *dst, size_t dst_len, int flags) override
     {
-        if (cl->gcm_enabled)
-            return false; // FIXME Only for tests, use copy-only with AES
         if (from >= dst_len)
         {
             // Skip
             from -= dst_len;
             return true;
         }
-        if ((flags & RDR_TLS) && cl->ssl_cli)
+        if ((flags & RDR_GCM) && (cl->ssl_cli || cl->gcm_enabled))
         {
-            // Can't inplace read TLS data
+            // Can't inplace read TLS/GCM data
             return false;
         }
         if (cl->recv_list.size() >= IOV_MAX)
@@ -758,15 +776,29 @@ void osd_messenger_t::handle_immediate_ops()
 
 bool osd_messenger_t::handle_read_buffer(osd_client_t *cl, uint8_t *curbuf, size_t bufsize)
 {
-    if (cl->gcm_enabled)
+    size_t done;
+    if (cl->ssl_cli)
     {
-        return handle_buffer_with<gcm_op_reader_t>(cl, curbuf, bufsize);
+        done = handle_buffer_with<ssl_op_reader_t>(cl, curbuf, bufsize);
+        if (done > 0 && done < bufsize && !cl->ssl_cli && cl->gcm_enabled)
+        {
+            done += handle_buffer_with<gcm_op_reader_t>(cl, curbuf+done, bufsize-done);
+        }
     }
-    return handle_buffer_with<copy_op_reader_t>(cl, curbuf, bufsize);
+    else if (cl->gcm_enabled)
+    {
+        done = handle_buffer_with<gcm_op_reader_t>(cl, curbuf, bufsize);
+    }
+    else
+    {
+        done = handle_buffer_with<copy_op_reader_t>(cl, curbuf, bufsize);
+    }
+    assert(!done || done == bufsize);
+    return !!done;
 }
 
 template<typename T>
-bool osd_messenger_t::handle_buffer_with(osd_client_t *cl, uint8_t *curbuf, size_t bufsize)
+size_t osd_messenger_t::handle_buffer_with(osd_client_t *cl, uint8_t *curbuf, size_t bufsize)
 {
     T rdr(this, cl, curbuf, bufsize);
     // Reset OSD ping state
@@ -790,20 +822,22 @@ bool osd_messenger_t::handle_buffer_with(osd_client_t *cl, uint8_t *curbuf, size
         {
             if (!cl->read_csum_state)
                 cl->read_csum_state = XXH3_createState();
-            XXH3_64bits_reset(cl->read_csum_state);
+            if (cl->peer_key.size() == AES_256_GCM_KEY_SIZE + AES_256_GCM_IV_SIZE + XXH_SECRET_DEFAULT_SIZE)
+                XXH3_64bits_reset_withSecret(cl->read_csum_state, cl->peer_key.data() + AES_256_GCM_KEY_SIZE + AES_256_GCM_IV_SIZE, XXH_SECRET_DEFAULT_SIZE);
+            else
+                XXH3_64bits_reset(cl->read_csum_state);
         }
         if (!op_read_from(cl, rdr) || !handle_finished_op(cl))
         {
             if (cl->io_error)
             {
                 stop_client(cl->client_id);
-                return false;
+                return 0;
             }
             break;
         }
     }
-    assert(rdr.get_done() == bufsize);
-    return true;
+    return rdr.get_done();
 }
 
 bool osd_messenger_t::handle_hdr(osd_client_t *cl)
@@ -982,7 +1016,7 @@ bool osd_messenger_t::op_read_from(osd_client_t *cl, msgr_op_reader_t & rdr)
     bool hdr = (cl->read_op_pos < OSD_PACKET_SIZE);
     if (hdr || op->op_type == OSD_OP_IN)
     {
-        if (!rdr.read(op->req.buf, OSD_PACKET_SIZE, RDR_TLS | (cl->proto_csum_status == MSGR_CSUM_PAYLOAD ? RDR_NO_CSUM : 0)))
+        if (!rdr.read(op->req.buf, OSD_PACKET_SIZE, RDR_GCM | (cl->proto_csum_status == MSGR_CSUM_PAYLOAD ? RDR_NO_CSUM : 0)))
             return false;
         if (hdr)
         {
@@ -998,7 +1032,7 @@ bool osd_messenger_t::op_read_from(osd_client_t *cl, msgr_op_reader_t & rdr)
         if (op->req.hdr.opcode == OSD_OP_SEC_WRITE ||
             op->req.hdr.opcode == OSD_OP_SEC_WRITE_STABLE)
         {
-            if (!rdr.read((uint8_t*)op->bitmap, op->req.sec_rw.attr_len, RDR_TLS))
+            if (!rdr.read((uint8_t*)op->bitmap, op->req.sec_rw.attr_len, RDR_GCM))
                 return false;
             if (!rdr.read((uint8_t*)op->buf, op->req.sec_rw.len, 0))
                 return false;
@@ -1006,12 +1040,12 @@ bool osd_messenger_t::op_read_from(osd_client_t *cl, msgr_op_reader_t & rdr)
         else if (op->req.hdr.opcode == OSD_OP_SEC_STABILIZE ||
             op->req.hdr.opcode == OSD_OP_SEC_ROLLBACK)
         {
-            if (!rdr.read((uint8_t*)op->buf, op->req.sec_stab.len, RDR_TLS))
+            if (!rdr.read((uint8_t*)op->buf, op->req.sec_stab.len, RDR_GCM))
                 return false;
         }
         else if (op->req.hdr.opcode == OSD_OP_SEC_READ_BMP)
         {
-            if (!rdr.read((uint8_t*)op->buf, op->req.sec_read_bmp.len, RDR_TLS))
+            if (!rdr.read((uint8_t*)op->buf, op->req.sec_read_bmp.len, RDR_GCM))
                 return false;
         }
         else if (op->req.hdr.opcode == OSD_OP_WRITE)
@@ -1021,20 +1055,20 @@ bool osd_messenger_t::op_read_from(osd_client_t *cl, msgr_op_reader_t & rdr)
         }
         else if (op->req.hdr.opcode == OSD_OP_SHOW_CONFIG)
         {
-            if (!rdr.read((uint8_t*)op->buf, op->req.show_conf.json_len, RDR_TLS))
+            if (!rdr.read((uint8_t*)op->buf, op->req.show_conf.json_len, RDR_GCM))
                 return false;
         }
     }
     else
     {
-        if (!rdr.read(op->reply.buf, OSD_PACKET_SIZE, RDR_TLS | (cl->proto_csum_status == MSGR_CSUM_PAYLOAD ? RDR_NO_CSUM : 0)))
+        if (!rdr.read(op->reply.buf, OSD_PACKET_SIZE, RDR_GCM | (cl->proto_csum_status == MSGR_CSUM_PAYLOAD ? RDR_NO_CSUM : 0)))
             return false;
 switched_type:
         if (op->reply.hdr.opcode == OSD_OP_SEC_READ)
         {
             if (op->reply.sec_rw.attr_len > 0)
             {
-                if (!rdr.read((uint8_t*)op->bitmap, op->reply.sec_rw.attr_len, RDR_TLS))
+                if (!rdr.read((uint8_t*)op->bitmap, op->reply.sec_rw.attr_len, RDR_GCM))
                     return false;
             }
             if (op->reply.hdr.retval > 0)
@@ -1048,7 +1082,7 @@ switched_type:
         {
             if (op->reply.rw.bitmap_len > 0)
             {
-                if (!rdr.read((uint8_t*)op->bitmap, op->reply.rw.bitmap_len, RDR_TLS))
+                if (!rdr.read((uint8_t*)op->bitmap, op->reply.rw.bitmap_len, RDR_GCM))
                     return false;
             }
             if (op->reply.hdr.retval > 0)
@@ -1060,25 +1094,25 @@ switched_type:
         }
         else if (op->reply.hdr.opcode == OSD_OP_SEC_LIST && op->reply.hdr.retval > 0)
         {
-            if (!rdr.read((uint8_t*)op->buf, sizeof(obj_ver_id) * op->reply.hdr.retval, RDR_TLS))
+            if (!rdr.read((uint8_t*)op->buf, sizeof(obj_ver_id) * op->reply.hdr.retval, RDR_GCM))
                 return false;
         }
         else if ((op->reply.hdr.opcode == OSD_OP_SEC_READ_BMP ||
             op->reply.hdr.opcode == OSD_OP_SHOW_CONFIG) && op->reply.hdr.retval > 0)
         {
-            if (!rdr.read((uint8_t*)op->buf, op->reply.hdr.retval, RDR_TLS))
+            if (!rdr.read((uint8_t*)op->buf, op->reply.hdr.retval, RDR_GCM))
                 return false;
         }
         else if (op->reply.hdr.opcode == OSD_OP_DESCRIBE && op->reply.describe.result_bytes > 0)
         {
-            if (!rdr.read((uint8_t*)op->buf, op->reply.describe.result_bytes, RDR_TLS))
+            if (!rdr.read((uint8_t*)op->buf, op->reply.describe.result_bytes, RDR_GCM))
                 return false;
         }
     }
     if (cl->proto_csum_status == MSGR_CSUM_FULL ||
         cl->read_op_size > 0 && cl->proto_csum_status == MSGR_CSUM_PAYLOAD)
     {
-        if (!rdr.read((uint8_t*)&op->csum, 8, RDR_TLS|RDR_NO_CSUM))
+        if (!rdr.read((uint8_t*)&op->csum, 8, RDR_GCM|RDR_NO_CSUM))
             return false;
     }
     if (!rdr.finish())

src/client/msgr_send.cpp

@@ -12,10 +12,14 @@
 #include <openssl/pem.h>
 #include <openssl/ssl.h>
 
-#define WR_TLS     1
+#define WR_GCM     1
 #define WR_XTS     2
 #define WR_NO_CSUM 4
 
+#define MSGR_HSP_HS   1
+#define MSGR_HSP_SEND 2
+#define MSGR_HSP_RECV 4
+
 class msgr_op_writer_t
 {
 public:
@@ -35,6 +39,8 @@ protected:
     size_t done;
 
 public:
+    constexpr static bool is_ssl = false;
+
     copy_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t *curbuf, size_t bufsize):
         msgr(msgr), cl(cl), from(cl->write_op_pos), curbuf(curbuf), bufsize(bufsize), done(0)
     {}
@@ -95,6 +101,8 @@ class ssl_op_writer_t: public msgr_op_writer_t
     size_t done;
 
 public:
+    constexpr static bool is_ssl = true;
+
     ssl_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t *curbuf, size_t bufsize):
         msgr(msgr), cl(cl), from(cl->write_op_pos), curbuf(curbuf), bufsize(bufsize), done(0)
     {
@@ -105,14 +113,29 @@ public:
         from = cl->write_op_pos;
     }
 
-    void flush_ssl()
+    bool flush_ssl()
     {
-        if (!cl->ssl_handshake_done)
+        if (cl->ssl_handshake_pending)
         {
-            if (!msgr->ssl_do_handshake(cl))
-                return;
+            if (!msgr->do_tls_handshake(cl))
+                return false;
+            if (cl->ssl_handshake_pending & MSGR_HSP_SEND)
+            {
+                uint8_t first_byte = 0;
+                size_t f = 0;
+                if (!write_to_ssl(cl, &first_byte, 1, 0, f))
+                    return false;
+                cl->write_op_pos--;
+                if (!_flush_ssl())
+                    return false;
+                cl->ssl_handshake_pending &= ~MSGR_HSP_SEND;
+                if (!msgr->finalize_tls_handshake(cl))
+                    return false;
+            }
+            else if (!_flush_ssl())
+                return false;
         }
-        _flush_ssl();
+        return true;
     }
 
     bool _flush_ssl()
@@ -131,6 +154,8 @@ public:
                 cl->ssl_more_to_buffer = true;
                 return false;
             }
+            else
+                cl->ssl_more_to_buffer = false;
         }
         return true;
     }
@@ -174,7 +199,7 @@ public:
             from -= src_len;
             return true;
         }
-        if (!(flags & WR_TLS) || !cl->ssl_cli)
+        if (!(flags & WR_GCM) || !cl->ssl_cli)
         {
             if (flags & WR_XTS)
             {
@@ -195,12 +220,12 @@ public:
         }
         else
         {
-            if (!cl->ssl_handshake_done)
+            if (cl->ssl_handshake_pending)
             {
-                if (!msgr->ssl_do_handshake(cl))
+                if (!_flush_ssl())
                     return false;
             }
-            if (cl->ssl_handshake_done)
+            if (!cl->ssl_handshake_pending)
             {
                 if (!write_to_ssl(cl, src, src_len, flags, from))
                     return false;
@@ -236,6 +261,8 @@ class gcm_op_writer_t: public msgr_op_writer_t
     size_t done;
 
 public:
+    constexpr static bool is_ssl = false;
+
     gcm_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t *curbuf, size_t bufsize):
         msgr(msgr), cl(cl), from(cl->write_op_pos), curbuf(curbuf), bufsize(bufsize), done(0)
     {
@@ -273,16 +300,15 @@ public:
 #endif
             }
         }
-        uint8_t iv[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
 #ifdef WITH_ISAL_CRYPTO
-        int r = isal_aes_gcm_init_256(&msgr->test_osd_aes_key_isal, cl->enc_ctx, iv, NULL, 0);
+        int r = isal_aes_gcm_init_256(&cl->my_key_isal, cl->enc_ctx, cl->my_key.data() + AES_256_GCM_KEY_SIZE, NULL, 0);
         if (r != 0)
         {
             fprintf(stderr, "isal_aes_gcm_init_256 error %d\n", r);
             abort();
         }
 #else
-        int r = EVP_EncryptInit_ex(cl->enc_ctx, NULL, NULL, (uint8_t*)msgr->test_osd_aes_key.data(), iv);
+        int r = EVP_EncryptInit_ex(cl->enc_ctx, NULL, NULL, (uint8_t*)cl->my_key.data(), cl->my_key.data() + AES_256_GCM_KEY_SIZE);
         if (r != 1)
         {
             fprintf(stderr, "EncryptInit error: ");
@@ -290,6 +316,9 @@ public:
             abort();
         }
 #endif
+        // Increase IV
+        cl->my_iv_ctr++;
+        (*(uint64_t*)(cl->my_key.data() + AES_256_GCM_KEY_SIZE))++;
     }
 
     static void free_ctx(osd_messenger_t* msgr, osd_client_t *cl)
@@ -314,7 +343,7 @@ public:
             from -= src_len;
             return true;
         }
-        if (!(flags & WR_TLS))
+        if (!(flags & WR_GCM))
         {
             if (flags & WR_XTS)
             {
@@ -343,7 +372,7 @@ public:
             if (!n)
                 return false;
 #ifdef WITH_ISAL_CRYPTO
-            int r = isal_aes_gcm_enc_256_update(&msgr->test_osd_aes_key_isal, cl->enc_ctx, curbuf+done, src+from, n);
+            int r = isal_aes_gcm_enc_256_update(&cl->my_key_isal, cl->enc_ctx, curbuf+done, src+from, n);
             assert(!r);
 #else
             int actual_out;
@@ -370,7 +399,7 @@ public:
     static void write_tag_to(osd_messenger_t *msgr, osd_client_t *cl, uint8_t *dst)
     {
 #ifdef WITH_ISAL_CRYPTO
-        int r = isal_aes_gcm_enc_256_finalize(&msgr->test_osd_aes_key_isal, cl->enc_ctx, dst, 16);
+        int r = isal_aes_gcm_enc_256_finalize(&cl->my_key_isal, cl->enc_ctx, dst, 16);
         assert(!r);
 #else
         int actual_out = 0;
@@ -425,12 +454,12 @@ public:
     }
 };
 
-// FIXME Split into 3 classes - basic, tls and gcm
 class get_op_writer_t: public msgr_op_writer_t
 {
     osd_messenger_t* msgr;
     osd_client_t* cl;
     size_t from;
+    size_t done;
     size_t enc_size;
     size_t done_enc;
 
@@ -468,6 +497,7 @@ class get_op_writer_t: public msgr_op_writer_t
             }
         }
         cl->send_list.push_back((iovec){ .iov_base = cl->ssl_out_buf+cl->ssl_out_buf_size, .iov_len = n });
+        done += n;
         cl->ssl_out_buf_size += n;
     }
 
@@ -481,13 +511,16 @@ class get_op_writer_t: public msgr_op_writer_t
             if (r > 0)
                 n += r;
         } while (cl->ssl_out_buf_size+n >= cl->ssl_out_buf_cap);
+        cl->ssl_more_to_buffer = false;
         if (n > 0)
             send_out_buf(n);
     }
 
 public:
-    get_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl):
-        msgr(msgr), cl(cl), from(cl->write_op_pos), enc_size(0), done_enc(0)
+    constexpr static bool is_ssl = true;
+
+    get_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t*, size_t):
+        msgr(msgr), cl(cl), from(cl->write_op_pos), done(0), enc_size(0), done_enc(0)
     {
     }
 
@@ -502,18 +535,32 @@ public:
         }
     }
 
-    void flush_ssl()
+    bool flush_ssl()
     {
-        if (!cl->ssl_handshake_done)
+        if (cl->ssl_cli && cl->ssl_handshake_pending)
         {
-            if (!msgr->ssl_do_handshake(cl))
-                return;
+            if (!msgr->do_tls_handshake(cl))
+                return false;
+            if (cl->ssl_handshake_pending & MSGR_HSP_SEND)
+            {
+                uint8_t first_byte = 0;
+                size_t f = 0;
+                if (!ssl_op_writer_t::write_to_ssl(cl, &first_byte, 1, 0, f))
+                    return false;
+                cl->write_op_pos--;
+                copy_ssl();
+                cl->ssl_handshake_pending &= ~MSGR_HSP_SEND;
+                if (!msgr->finalize_tls_handshake(cl))
+                {
+                    if (cl->gcm_enabled)
+                        return true;
+                    return false;
+                }
+            }
+            else
+                copy_ssl();
         }
-        if (cl->send_list.size() >= IOV_MAX)
-        {
-            return;
-        }
-        copy_ssl();
+        return true;
     }
 
     bool write(uint8_t *src, size_t src_len, int flags) override
@@ -528,16 +575,18 @@ public:
         {
             return false;
         }
-        if (flags & WR_TLS)
+        if (flags & WR_GCM)
         {
             if (cl->ssl_cli)
             {
-                if (!cl->ssl_handshake_done)
+                if (cl->ssl_handshake_pending)
                 {
-                    if (!msgr->ssl_do_handshake(cl))
+                    if (!flush_ssl())
                         return false;
+                    if (cl->gcm_enabled)
+                        goto try_gcm;
                 }
-                if (cl->ssl_handshake_done)
+                if (!cl->ssl_handshake_pending)
                 {
                     if (!ssl_op_writer_t::write_to_ssl(cl, src, src_len, flags, from))
                         return false;
@@ -549,13 +598,14 @@ public:
                 from = 0;
                 return true;
             }
-            else if (cl->enc_ctx)
+try_gcm:
+            if (cl->gcm_enabled)
             {
                 // Encrypt data to client's temporary output buffer (all at once)
                 size_t n = src_len-from;
                 ssl_extend_buf(n);
 #ifdef WITH_ISAL_CRYPTO
-                int r = isal_aes_gcm_enc_256_update(&msgr->test_osd_aes_key_isal, cl->enc_ctx, cl->ssl_out_buf+cl->ssl_out_buf_size, src+from, n);
+                int r = isal_aes_gcm_enc_256_update(&cl->my_key_isal, cl->enc_ctx, cl->ssl_out_buf+cl->ssl_out_buf_size, src+from, n);
                 assert(!r);
 #else
                 int actual_out;
@@ -593,6 +643,7 @@ public:
                 assert(enc_size > 0);
                 cl->write_op->enc_buf = (uint8_t*)malloc_or_die(enc_size);
                 cl->send_list.push_back((iovec){ .iov_base = cl->write_op->enc_buf, .iov_len = enc_size });
+                done += enc_size;
             }
             assert(enc_size > 0);
             msgr->op_encrypted_copy_buf(cl, cl->write_op->enc_buf, enc_size, src, src_len, from, done_enc);
@@ -603,6 +654,7 @@ public:
             if (cl->write_csum_state && !(flags & WR_NO_CSUM))
                 XXH3_64bits_update(cl->write_csum_state, src+from, src_len-from);
             cl->send_list.push_back((iovec){ src+from, src_len-from });
+            done += src_len-from;
             cl->write_op_pos += src_len-from;
         }
         from = 0;
@@ -629,6 +681,11 @@ public:
         }
         return true;
     }
+
+    size_t get_done()
+    {
+        return done;
+    }
 };
 
 void osd_messenger_t::outbox_push(osd_op_t *cur_op)
@@ -740,30 +797,6 @@ void osd_messenger_t::measure_exec(osd_op_t *cur_op)
     }
 }
 
-bool osd_messenger_t::ssl_do_handshake(osd_client_t *cl)
-{
-    if (cl->ssl_handshake_done)
-    {
-        return true;
-    }
-    int r = SSL_do_handshake(cl->ssl_cli);
-    if (r > 0)
-    {
-        cl->ssl_handshake_done = true;
-    }
-    else
-    {
-        r = SSL_get_error(cl->ssl_cli, r);
-        if (r != 0 && r != SSL_ERROR_WANT_READ && r != SSL_ERROR_WANT_WRITE)
-        {
-            fprintf(stderr, "Client %ju TLS handshake error: %s, stopping client\n", cl->client_id, ERR_error_string(ERR_get_error(), NULL));
-            cl->io_error = true;
-            return false;
-        }
-    }
-    return true;
-}
-
 bool osd_messenger_t::try_send(osd_client_t *cl)
 {
     if (cl->peer_state == PEER_STOPPED || cl->peer_fd < 0)
@@ -775,32 +808,11 @@ bool osd_messenger_t::try_send(osd_client_t *cl)
         return false;
     }
     assert(cl->peer_state != PEER_RDMA);
-    get_op_writer_t wr(this, cl);
-    while ((cl->write_op || cl->write_ops.size()) && cl->send_list.size() < IOV_MAX)
+    copy_ops_to_with<get_op_writer_t>(cl, NULL, 0);
+    if (cl->io_error)
     {
-        if (!cl->write_op)
-        {
-            next_write_op(cl);
-            wr.reset();
-        }
-        osd_op_t *op = cl->write_op;
-        if (!op_write_to(cl, wr))
-        {
-            if (cl->io_error)
-            {
-                stop_client(cl->client_id);
-                return true;
-            }
-            break;
-        }
-        if (!cl->write_op && op->op_type == OSD_OP_IN)
-        {
-            cl->send_free_ops.push_back(op);
-        }
-    }
-    if (!cl->send_list.size() && cl->ssl_cli)
-    {
-        wr.flush_ssl();
+        stop_client(cl->client_id);
+        return true;
     }
     if (!cl->send_list.size())
     {
@@ -866,6 +878,12 @@ bool osd_messenger_t::try_send(osd_client_t *cl)
 
 size_t osd_messenger_t::copy_ops_to(osd_client_t *cl, uint8_t *dst, size_t dst_len)
 {
+    if (cl->ssl_cli)
+    {
+        size_t done = copy_ops_to_with<ssl_op_writer_t>(cl, dst, dst_len);
+        if (done > 0 || cl->ssl_cli || !cl->gcm_enabled)
+            return done;
+    }
     if (cl->gcm_enabled)
     {
         return copy_ops_to_with<gcm_op_writer_t>(cl, dst, dst_len);
@@ -897,10 +915,13 @@ size_t osd_messenger_t::copy_ops_to_with(osd_client_t *cl, uint8_t *dst, size_t
             cl->send_free_ops.push_back(op);
         }
     }
-    /*FIXME if (!wr.get_done() && cl->ssl_cli)
+    if constexpr (T::is_ssl)
     {
-        wr.flush_ssl();
-    }*/
+        if (!wr.get_done())
+        {
+            wr.flush_ssl();
+        }
+    }
     return wr.get_done();
 }
 
@@ -912,7 +933,10 @@ void osd_messenger_t::next_write_op(osd_client_t *cl)
     {
         if (!cl->write_csum_state)
             cl->write_csum_state = XXH3_createState();
-        XXH3_64bits_reset(cl->write_csum_state);
+        if (cl->my_key.size() == AES_256_GCM_KEY_SIZE + AES_256_GCM_IV_SIZE + XXH_SECRET_DEFAULT_SIZE)
+            XXH3_64bits_reset_withSecret(cl->write_csum_state, cl->my_key.data() + AES_256_GCM_KEY_SIZE + AES_256_GCM_IV_SIZE, XXH_SECRET_DEFAULT_SIZE);
+        else
+            XXH3_64bits_reset(cl->write_csum_state);
     }
 }
 
@@ -1057,7 +1081,7 @@ bool osd_messenger_t::op_write_to(osd_client_t *cl, msgr_op_writer_t & wr)
     osd_op_t *op = cl->write_op;
     // Header
     if (!wr.write((op->op_type == OSD_OP_IN ? op->reply.buf : op->req.buf), OSD_PACKET_SIZE,
-        WR_TLS | (cl->proto_csum_status == MSGR_CSUM_PAYLOAD ? WR_NO_CSUM : 0)))
+        WR_GCM | (cl->proto_csum_status == MSGR_CSUM_PAYLOAD ? WR_NO_CSUM : 0)))
     {
         return false;
     }
@@ -1066,17 +1090,17 @@ bool osd_messenger_t::op_write_to(osd_client_t *cl, msgr_op_writer_t & wr)
     {
         if (op->req.hdr.opcode == OSD_OP_SEC_READ && op->reply.sec_rw.attr_len > 0)
         {
-            if (!wr.write((uint8_t*)op->bitmap, op->reply.sec_rw.attr_len, WR_TLS))
+            if (!wr.write((uint8_t*)op->bitmap, op->reply.sec_rw.attr_len, WR_GCM))
                 return false;
         }
         else if (op->req.hdr.opcode == OSD_OP_SEC_READ_BMP && op->reply.hdr.retval > 0)
         {
-            if (!wr.write((uint8_t*)op->buf, (size_t)op->reply.hdr.retval, WR_TLS))
+            if (!wr.write((uint8_t*)op->buf, (size_t)op->reply.hdr.retval, WR_GCM))
                 return false;
         }
         else if (op->req.hdr.opcode == OSD_OP_READ && op->reply.rw.bitmap_len > 0)
         {
-            if (!wr.write((uint8_t*)op->bitmap, op->reply.rw.bitmap_len, WR_TLS))
+            if (!wr.write((uint8_t*)op->bitmap, op->reply.rw.bitmap_len, WR_GCM))
                 return false;
         }
     }
@@ -1085,12 +1109,12 @@ bool osd_messenger_t::op_write_to(osd_client_t *cl, msgr_op_writer_t & wr)
         if ((op->req.hdr.opcode == OSD_OP_SEC_WRITE || op->req.hdr.opcode == OSD_OP_SEC_WRITE_STABLE) &&
             op->req.sec_rw.attr_len > 0)
         {
-            if (!wr.write((uint8_t*)op->bitmap, op->req.sec_rw.attr_len, WR_TLS))
+            if (!wr.write((uint8_t*)op->bitmap, op->req.sec_rw.attr_len, WR_GCM))
                 return false;
         }
         else if (op->req.hdr.opcode == OSD_OP_SEC_READ_BMP && op->req.sec_read_bmp.len > 0)
         {
-            if (!wr.write((uint8_t*)op->buf, (size_t)op->req.sec_read_bmp.len, WR_TLS))
+            if (!wr.write((uint8_t*)op->buf, (size_t)op->req.sec_read_bmp.len, WR_GCM))
                 return false;
         }
     }
@@ -1100,7 +1124,7 @@ bool osd_messenger_t::op_write_to(osd_client_t *cl, msgr_op_writer_t & wr)
         for (int i = 0; i < cl->write_op->iov.count; i++)
         {
             auto & iov = cl->write_op->iov.buf[i];
-            if (!wr.write((uint8_t*)iov.iov_base, iov.iov_len, WR_TLS))
+            if (!wr.write((uint8_t*)iov.iov_base, iov.iov_len, WR_GCM))
                 return false;
         }
     }
@@ -1117,7 +1141,7 @@ bool osd_messenger_t::op_write_to(osd_client_t *cl, msgr_op_writer_t & wr)
         cl->proto_csum_status == MSGR_CSUM_PAYLOAD && cl->write_op_pos > OSD_PACKET_SIZE)
     {
         cl->write_op->csum = XXH3_64bits_digest(cl->write_csum_state);
-        if (!wr.write((uint8_t*)&cl->write_op->csum, 8, WR_TLS|WR_NO_CSUM))
+        if (!wr.write((uint8_t*)&cl->write_op->csum, 8, WR_GCM|WR_NO_CSUM))
             return false;
     }
     if (!wr.finish())

src/nfs/nfs_proxy.cpp

@@ -121,6 +121,7 @@ static const char* help_text =
     "  --logfile <FILE>  log to the specified file\n"
     "  --enforce 1       enforce permissions at the server side (default is disabled)\n"
     "  --foreground 1    stay in foreground, do not daemonize\n"
+    "  --trace           trace all NFS requests\n"
     "\n"
     "NFS proxy is stateless if you use immediate_commit=all in your cluster and if\n"
     "you do not use client_enable_writeback=true, so you can freely use multiple\n"
@@ -158,7 +159,7 @@ json11::Json::object nfs_proxy_t::parse_args(int narg, const char *args[])
         {
             const char *opt = args[i]+2;
             cfg[str_replace(opt, "-", "_")] = !strcmp(opt, "json") || !strcmp(opt, "block") ||
-                !strcmp(opt, "dry-run") || !strcmp(opt, "recalc-stats") ||
+                !strcmp(opt, "dry-run") || !strcmp(opt, "recalc-stats") || !strcmp(opt, "trace") ||
                 !strcmp(opt, "include-empty") || !strcmp(opt, "no-rm") || i == narg-1 ? "1" : args[++i];
         }
         else

src/osd/osd_primary_subops.cpp

@@ -83,6 +83,8 @@ void osd_t::finish_op(osd_op_t *cur_op, int retval)
             rm_inflight(pg);
         }
         assert(!cur_op->op_data->subops);
+        free(cur_op->op_data);
+        cur_op->op_data = NULL;
     }
     cur_op->reply.hdr.magic = SECONDARY_OSD_REPLY_MAGIC;
     cur_op->reply.hdr.id = cur_op->req.hdr.id;

src/test/test_cluster_client.cpp

@@ -592,7 +592,7 @@ void test_msgr_encrypt()
     enc->start(key, 4096 * 114, 4096);
     in_pos = out_pos = 0;
     enc->update(src+4096, 4096, crypt2, 4095, in_pos, out_pos);
-    assert(in_pos == 4096);
+    assert(in_pos == 4095);
     assert(out_pos == 4095);
     enc->update(src+4096+in_pos, 4096-in_pos, crypt2+out_pos, 4096-out_pos, in_pos, out_pos);
     assert(in_pos == 4096);
@@ -623,10 +623,10 @@ void test_msgr_encrypt()
     assert(in_pos == 3000);
     assert(out_pos == 0);
     dec->update(crypt+4096+3000, 3000, decrypt, 500, in_pos, out_pos);
-    assert(in_pos == 4096);
+    assert(in_pos == 4095);
     assert(out_pos == 500);
     dec->update(crypt+4096+in_pos, 6000-in_pos, decrypt+out_pos, 3000, in_pos, out_pos);
-    assert(in_pos == 4096);
+    assert(in_pos == 4095);
     assert(out_pos == 3500);
     dec->update(crypt+4096+in_pos, 6000-in_pos, decrypt+out_pos, 1000, in_pos, out_pos);
     assert(in_pos == 4096);
@@ -635,10 +635,10 @@ void test_msgr_encrypt()
     assert(in_pos == 6000);
     assert(out_pos == 4096);
     dec->update(crypt+4096+in_pos, 8192-in_pos, decrypt+out_pos, 4500-out_pos, in_pos, out_pos);
-    assert(in_pos == 8192);
+    assert(in_pos == 8191);
     assert(out_pos == 4500);
     dec->update(crypt+4096+in_pos, 8192-in_pos, decrypt+out_pos, 7500-out_pos, in_pos, out_pos);
-    assert(in_pos == 8192);
+    assert(in_pos == 8191);
     assert(out_pos == 7500);
     dec->update(crypt+4096+in_pos, 8192-in_pos, decrypt+out_pos, 8192-out_pos, in_pos, out_pos);
     assert(in_pos == 8192);

src/util/openssl_util.cpp

@@ -0,0 +1,119 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
+
+#include "openssl_util.h"
+#include "str_util.h"
+
+#include <openssl/ssl.h>
+
+X509 *openssl_load_cert(const std::string & file_or_pem)
+{
+    std::string pem;
+    BIO *bio = NULL;
+    if (file_or_pem.substr(0, 5) != "-----")
+    {
+        pem = read_file(file_or_pem);
+        bio = BIO_new_mem_buf(pem.data(), pem.size());
+    }
+    else
+        bio = BIO_new_mem_buf(file_or_pem.data(), file_or_pem.size());
+    if (!bio)
+        return NULL;
+    X509 *x509 = PEM_read_bio_X509(bio, NULL, 0, NULL);
+    BIO_free(bio);
+    return x509;
+}
+
+bool openssl_ctx_add_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem)
+{
+    X509 *cert = openssl_load_cert(file_or_pem);
+    bool ok = !!cert;
+    if (cert)
+    {
+        X509_STORE *store = SSL_CTX_get_cert_store(ssl_ctx);
+        X509_STORE_add_cert(store, cert);
+        X509_free(cert);
+    }
+    return ok;
+}
+
+bool openssl_ctx_use_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem)
+{
+    if (file_or_pem.substr(0, 5) == "-----")
+    {
+        return openssl_ctx_add_ca(ssl_ctx, file_or_pem);
+    }
+    return file_or_pem.empty()
+        ? !!SSL_CTX_set_default_verify_paths(ssl_ctx)
+        : !!SSL_CTX_load_verify_locations(ssl_ctx, file_or_pem.c_str(), NULL);
+}
+
+std::string openssl_get_cn(X509 *x509)
+{
+    X509_NAME* subj = X509_get_subject_name(x509);
+    int pos = X509_NAME_get_index_by_NID(subj, NID_commonName, -1);
+    if (pos != -1)
+    {
+        X509_NAME_ENTRY* cn = X509_NAME_get_entry(subj, pos);
+        ASN1_STRING* str = X509_NAME_ENTRY_get_data(cn);
+        return std::string((const char*)ASN1_STRING_get0_data(str), ASN1_STRING_length(str));
+    }
+    return "";
+}
+
+bool openssl_ctx_use_cert(SSL_CTX *ssl_ctx, const std::string & file_or_pem, std::string & common_name)
+{
+    BIO *bio = NULL;
+    std::string contents;
+    if (file_or_pem.substr(0, 5) == "-----")
+        bio = BIO_new_mem_buf(file_or_pem.data(), file_or_pem.size());
+    else
+    {
+        contents = read_file(file_or_pem);
+        if (!contents.size())
+            return false;
+        bio = BIO_new_mem_buf(contents.data(), contents.size());
+    }
+    if (!bio)
+        return false;
+    X509 *x509 = PEM_read_bio_X509(bio, NULL, 0, NULL);
+    bool ok = !!x509;
+    if (x509)
+    {
+        ok = SSL_CTX_use_certificate(ssl_ctx, x509);
+        if (ok)
+            common_name = openssl_get_cn(x509);
+        X509_free(x509);
+    }
+    BIO_free(bio);
+    return ok;
+}
+
+bool openssl_ctx_use_key(SSL_CTX *ssl_ctx, const std::string & file_or_pem)
+{
+    if (file_or_pem.substr(0, 5) == "-----")
+    {
+        BIO *bio = BIO_new_mem_buf(file_or_pem.data(), file_or_pem.size());
+        if (!bio)
+            return false;
+        EVP_PKEY *pkey = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
+        bool ok = !!pkey;
+        if (pkey)
+        {
+            ok = SSL_CTX_use_PrivateKey(ssl_ctx, pkey);
+            EVP_PKEY_free(pkey);
+        }
+        BIO_free(bio);
+        return ok;
+    }
+    return !!SSL_CTX_use_PrivateKey_file(ssl_ctx, file_or_pem.c_str(), SSL_FILETYPE_PEM);
+}
+
+bool openssl_bio_nonempty(BIO *bio)
+{
+    // SSL_ERROR_WANT_WRITE is absolutely non-informative with memory BIO, it basically never happens
+    // So we have to check memory BIO for outstanding data
+    char *bio_buf = NULL;
+    size_t bio_sz = BIO_get_mem_data(bio, &bio_buf);
+    return bio_sz > 0;
+}

src/util/openssl_util.h

@@ -0,0 +1,18 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
+
+#pragma once
+
+#include <string>
+
+#ifdef WITH_OPENSSL
+#include <openssl/types.h>
+#endif
+
+X509 *openssl_load_cert(const std::string & file_or_pem);
+bool openssl_ctx_add_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem);
+bool openssl_ctx_use_ca(SSL_CTX *ssl_ctx, const std::string & file_or_pem);
+std::string openssl_get_cn(X509 *x509);
+bool openssl_ctx_use_cert(SSL_CTX *ssl_ctx, const std::string & file_or_pem, std::string & common_name);
+bool openssl_ctx_use_key(SSL_CTX *ssl_ctx, const std::string & file_or_pem);
+bool openssl_bio_nonempty(BIO *bio);

src/util/str_util.cpp

@@ -535,12 +535,12 @@ std::string urldecode(const std::string & orig)
     return res;
 }
 
-size_t fromhexstr(const std::string & from, size_t bytes, uint8_t *to)
+size_t fromhexstr(const char *from, size_t from_len, uint8_t *to, size_t to_len)
 {
-    if (bytes > from.size()/2)
-        bytes = from.size()/2;
+    if (to_len > from_len/2)
+        to_len = from_len/2;
     size_t i = 0;
-    while (i < bytes)
+    while (i < to_len)
     {
         uint8_t x = fromhexchar(from[2*i], 16);
         uint8_t y = fromhexchar(from[2*i+1], 16);
@@ -552,6 +552,11 @@ size_t fromhexstr(const std::string & from, size_t bytes, uint8_t *to)
     return i;
 }
 
+size_t fromhexstr(const std::string & from, size_t bytes, uint8_t *to)
+{
+    return fromhexstr(from.data(), from.size(), to, bytes);
+}
+
 std::string tohexstr(const uint8_t *from, size_t bytes)
 {
     std::string res;

src/util/str_util.h

@@ -35,6 +35,7 @@ std::string realpath_str(std::string path, bool nofail = true);
 std::string format_datetime(uint64_t unixtime);
 bool is_zero(void *buf, size_t size);
 std::string urldecode(const std::string & orig);
+size_t fromhexstr(const char *from, size_t from_len, uint8_t *to, size_t to_len);
 size_t fromhexstr(const std::string & from, size_t bytes, uint8_t *to);
 std::string tohexstr(const uint8_t *from, size_t bytes);
 bool ishexstr(const std::string & str);

src/util/xxhash.h

@@ -34,6 +34,8 @@ extern "C" {
 # define XXH_NOESCAPE
 #endif
 
+#define XXH_SECRET_DEFAULT_SIZE 192
+
 typedef enum {
     XXH_OK = 0,
     XXH_ERROR

tests/common.sh

@@ -27,7 +27,7 @@ ETCD_COUNT=${ETCD_COUNT:-1}
 ANTIETCD=${ANTIETCD}
 USE_RAMDISK=${USE_RAMDISK}
 ETCD_SCHEME=${ETCD_SCHEME:-http}
-OSD_TLS=${OSD_TLS}
+OSD_TLS=${OSD_TLS:-1}
 
 RAMDISK=/run/user/$(id -u)
 findmnt $RAMDISK >/dev/null || (sudo mkdir -p $RAMDISK && sudo mount -t tmpfs tmpfs $RAMDISK)
@@ -142,7 +142,6 @@ if [[ "$OSD_TLS" = "1" ]]; then
     VITASTOR_CFG="$VITASTOR_CFG"',"tls_cert":"'$(pwd)'/testdata/cli.crt"'
     VITASTOR_CFG="$VITASTOR_CFG"',"tls_key":"'$(pwd)'/testdata/cli.key"'
 fi
-VITASTOR_CFG="$VITASTOR_CFG"',"test_osd_aes_key":"'$(openssl rand -hex 32)'"'
 echo "{$VITASTOR_CFG}" > ./testdata/vitastor.conf
 VITASTOR_CFG=./testdata/vitastor.conf
 VITASTOR_CLI="build/src/cmd/vitastor-cli --config_path $VITASTOR_CFG"