diff options
Diffstat (limited to 'common/xrdp_tls.c')
| -rw-r--r-- | common/xrdp_tls.c | 293 |
1 files changed, 0 insertions, 293 deletions
diff --git a/common/xrdp_tls.c b/common/xrdp_tls.c deleted file mode 100644 index 3c74c47a..00000000 --- a/common/xrdp_tls.c +++ /dev/null @@ -1,293 +0,0 @@ -/** - * xrdp: A Remote Desktop Protocol server. - * - * Copyright (C) Idan Freiberg 2013-2014 - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - * transport layer security - */ - - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <openssl/ssl.h> - -#include "os_calls.h" -#include "trans.h" -#include "ssl_calls.h" - - -/*****************************************************************************/ -struct xrdp_tls * -APP_CC -xrdp_tls_create(struct trans *trans, const char *key, const char *cert) -{ - struct xrdp_tls *self; - int pid; - char buf[1024]; - - self = (struct xrdp_tls *) g_malloc(sizeof(struct xrdp_tls), 1); - if (self != NULL) - { - self->trans = trans; - self->cert = (char *) cert; - self->key = (char *) key; - pid = g_getpid(); - g_snprintf(buf, 1024, "xrdp_%8.8x_tls_rwo", pid); - self->rwo = g_create_wait_obj(buf); - } - - return self; -} - -/*****************************************************************************/ -int APP_CC -xrdp_tls_print_error(char *func, SSL *connection, int value) -{ - switch (SSL_get_error(connection, value)) - { - case SSL_ERROR_ZERO_RETURN: - g_writeln("xrdp_tls_print_error: %s: Server closed TLS connection", - func); - return 1; - - case SSL_ERROR_WANT_READ: - g_writeln("xrdp_tls_print_error: SSL_ERROR_WANT_READ"); - return 0; - - case SSL_ERROR_WANT_WRITE: - g_writeln("xrdp_tls_print_error: SSL_ERROR_WANT_WRITE"); - return 0; - - case SSL_ERROR_SYSCALL: - g_writeln("xrdp_tls_print_error: %s: I/O error", func); - return 1; - - case SSL_ERROR_SSL: - g_writeln("xrdp_tls_print_error: %s: Failure in SSL library (protocol error?)", - func); - return 1; - - default: - g_writeln("xrdp_tls_print_error: %s: Unknown error", func); - return 1; - } -} - -/*****************************************************************************/ -int APP_CC -xrdp_tls_accept(struct xrdp_tls *self) -{ - int connection_status; - long options = 0; - - /** - * SSL_OP_NO_SSLv2: - * - * We only want SSLv3 and TLSv1, so disable SSLv2. - * SSLv3 is used by, eg. Microsoft RDC for Mac OS X. - */ - options |= SSL_OP_NO_SSLv2; - -#if defined(SSL_OP_NO_COMPRESSION) - /** - * SSL_OP_NO_COMPRESSION: - * - * The Microsoft RDP server does not advertise support - * for TLS compression, but alternative servers may support it. - * This was observed between early versions of the FreeRDP server - * and the FreeRDP client, and caused major performance issues, - * which is why we're disabling it. - */ - options |= SSL_OP_NO_COMPRESSION; -#endif - - /** - * SSL_OP_TLS_BLOCK_PADDING_BUG: - * - * The Microsoft RDP server does *not* support TLS padding. - * It absolutely needs to be disabled otherwise it won't work. - */ - options |= SSL_OP_TLS_BLOCK_PADDING_BUG; - - /** - * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS: - * - * Just like TLS padding, the Microsoft RDP server does not - * support empty fragments. This needs to be disabled. - */ - options |= SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS; - - self->ctx = SSL_CTX_new(SSLv23_server_method()); - /* set context options */ - SSL_CTX_set_mode(self->ctx, - SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER | - SSL_MODE_ENABLE_PARTIAL_WRITE); - SSL_CTX_set_options(self->ctx, options); - SSL_CTX_set_read_ahead(self->ctx, 1); - - if (self->ctx == NULL) - { - g_writeln("xrdp_tls_accept: SSL_CTX_new failed"); - return 1; - } - - if (SSL_CTX_use_RSAPrivateKey_file(self->ctx, self->key, SSL_FILETYPE_PEM) - <= 0) - { - g_writeln("xrdp_tls_accept: SSL_CTX_use_RSAPrivateKey_file failed"); - return 1; - } - - self->ssl = SSL_new(self->ctx); - - if (self->ssl == NULL) - { - g_writeln("xrdp_tls_accept: SSL_new failed"); - return 1; - } - - if (SSL_use_certificate_file(self->ssl, self->cert, SSL_FILETYPE_PEM) <= 0) - { - g_writeln("xrdp_tls_accept: SSL_use_certificate_file failed"); - return 1; - } - - if (SSL_set_fd(self->ssl, self->trans->sck) < 1) - { - g_writeln("xrdp_tls_accept: SSL_set_fd failed"); - return 1; - } - - connection_status = SSL_accept(self->ssl); - - if (connection_status <= 0) - { - if (xrdp_tls_print_error("SSL_accept", self->ssl, connection_status)) - { - return 1; - } - } - - g_writeln("xrdp_tls_accept: TLS connection accepted"); - - return 0; -} -/*****************************************************************************/ -int APP_CC -xrdp_tls_disconnect(struct xrdp_tls *self) -{ - int status = SSL_shutdown(self->ssl); - while (status != 1) - { - status = SSL_shutdown(self->ssl); - - if (status <= 0) - { - if (xrdp_tls_print_error("SSL_shutdown", self->ssl, status)) - { - return 1; - } - } - } - return 0; -} -/*****************************************************************************/ -void APP_CC -xrdp_tls_delete(struct xrdp_tls *self) -{ - if (self != NULL) - { - if (self->ssl) - SSL_free(self->ssl); - - if (self->ctx) - SSL_CTX_free(self->ctx); - - g_delete_wait_obj(self->rwo); - - g_free(self); - } -} -/*****************************************************************************/ -int APP_CC -xrdp_tls_read(struct xrdp_tls *tls, char *data, int length) -{ - int status; - - status = SSL_read(tls->ssl, data, length); - - switch (SSL_get_error(tls->ssl, status)) - { - case SSL_ERROR_NONE: - break; - - case SSL_ERROR_WANT_READ: - case SSL_ERROR_WANT_WRITE: - status = 0; - break; - - default: - xrdp_tls_print_error("SSL_read", tls->ssl, status); - status = -1; - break; - } - - if (SSL_pending(tls->ssl) > 0) - { - g_set_wait_obj(tls->rwo); - } - - return status; -} -/*****************************************************************************/ -int APP_CC -xrdp_tls_write(struct xrdp_tls *tls, const char *data, int length) -{ - int status; - - status = SSL_write(tls->ssl, data, length); - - switch (SSL_get_error(tls->ssl, status)) - { - case SSL_ERROR_NONE: - break; - - case SSL_ERROR_WANT_READ: - case SSL_ERROR_WANT_WRITE: - status = 0; - break; - - default: - xrdp_tls_print_error("SSL_write", tls->ssl, status); - status = -1; - break; - } - - return status; -} -/*****************************************************************************/ -/* returns boolean */ -int APP_CC -xrdp_tls_can_recv(struct xrdp_tls *tls, int sck, int millis) -{ - if (SSL_pending(tls->ssl) > 0) - { - return 1; - } - g_reset_wait_obj(tls->rwo); - return g_tcp_can_recv(sck, millis); -} - |
