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1350 lines
38 KiB
1350 lines
38 KiB
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2014
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* rdp layer
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*/
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#if defined(HAVE_CONFIG_H)
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#include <config_ac.h>
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#endif
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#include "libxrdp.h"
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#include "log.h"
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#include "ssl_calls.h"
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#if defined(XRDP_NEUTRINORDP)
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#include <freerdp/codec/rfx.h>
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#include <freerdp/constants.h>
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#endif
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#define LOG_LEVEL 1
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#define LLOG(_level, _args) \
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do { if (_level < LOG_LEVEL) { g_write _args ; } } while (0)
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#define LLOGLN(_level, _args) \
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do { if (_level < LOG_LEVEL) { g_writeln _args ; } } while (0)
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#define FASTPATH_FRAG_SIZE (16 * 1024 - 128)
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/*****************************************************************************/
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static int
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xrdp_rdp_read_config(struct xrdp_client_info *client_info)
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{
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int index = 0;
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struct list *items = (struct list *)NULL;
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struct list *values = (struct list *)NULL;
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char *item = NULL;
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char *value = NULL;
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char cfg_file[256];
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int pos;
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char *tmp = NULL;
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int tmp_length = 0;
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/* initialize (zero out) local variables: */
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g_memset(cfg_file, 0, sizeof(char) * 256);
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items = list_create();
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items->auto_free = 1;
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values = list_create();
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values->auto_free = 1;
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g_snprintf(cfg_file, 255, "%s/xrdp.ini", XRDP_CFG_PATH);
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DEBUG(("cfg_file %s", cfg_file));
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file_by_name_read_section(cfg_file, "globals", items, values);
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for (index = 0; index < items->count; index++)
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{
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item = (char *)list_get_item(items, index);
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value = (char *)list_get_item(values, index);
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DEBUG(("item %s value %s", item, value));
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if (g_strcasecmp(item, "bitmap_cache") == 0)
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{
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client_info->use_bitmap_cache = g_text2bool(value);
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}
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else if (g_strcasecmp(item, "bitmap_compression") == 0)
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{
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client_info->use_bitmap_comp = g_text2bool(value);
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}
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else if (g_strcasecmp(item, "bulk_compression") == 0)
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{
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client_info->use_bulk_comp = g_text2bool(value);
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}
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else if (g_strcasecmp(item, "crypt_level") == 0)
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{
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if (g_strcasecmp(value, "none") == 0)
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{
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client_info->crypt_level = 0;
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}
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else if (g_strcasecmp(value, "low") == 0)
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{
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client_info->crypt_level = 1;
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}
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else if (g_strcasecmp(value, "medium") == 0)
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{
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client_info->crypt_level = 2;
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}
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else if (g_strcasecmp(value, "high") == 0)
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{
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client_info->crypt_level = 3;
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}
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else if (g_strcasecmp(value, "fips") == 0)
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{
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client_info->crypt_level = 4;
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}
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else
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{
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log_message(LOG_LEVEL_ALWAYS,"Warning: Your configured crypt level is "
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"undefined, 'high' will be used");
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client_info->crypt_level = 3;
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}
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}
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else if (g_strcasecmp(item, "allow_channels") == 0)
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{
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client_info->channels_allowed = g_text2bool(value);
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if (client_info->channels_allowed == 0)
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{
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log_message(LOG_LEVEL_DEBUG,"Info - All channels are disabled");
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}
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}
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else if (g_strcasecmp(item, "allow_multimon") == 0)
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{
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client_info->multimon = g_text2bool(value);
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if (client_info->multimon == 0)
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{
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log_message(LOG_LEVEL_DEBUG,"Info - Multi monitor server support disabled");
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}
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}
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else if (g_strcasecmp(item, "max_bpp") == 0)
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{
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client_info->max_bpp = g_atoi(value);
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}
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else if (g_strcasecmp(item, "rfx_min_pixel") == 0)
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{
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client_info->rfx_min_pixel = g_atoi(value);
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}
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else if (g_strcasecmp(item, "new_cursors") == 0)
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{
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client_info->pointer_flags = g_text2bool(value) == 0 ? 2 : 0;
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}
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else if (g_strcasecmp(item, "require_credentials") == 0)
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{
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client_info->require_credentials = g_text2bool(value);
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}
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else if (g_strcasecmp(item, "use_fastpath") == 0)
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{
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if (g_strcasecmp(value, "output") == 0)
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{
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client_info->use_fast_path = 1;
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}
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else if (g_strcasecmp(value, "input") == 0)
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{
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client_info->use_fast_path = 2;
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}
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else if (g_strcasecmp(value, "both") == 0)
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{
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client_info->use_fast_path = 3;
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}
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else if (g_strcasecmp(value, "none") == 0)
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{
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client_info->use_fast_path = 0;
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}
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else
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{
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log_message(LOG_LEVEL_ALWAYS,"Warning: Your configured fastpath level is "
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"undefined, fastpath will not be used");
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client_info->use_fast_path = 0;
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}
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}
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else if (g_strcasecmp(item, "ssl_protocols") == 0)
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{
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/* put leading/trailing comma to properly detect "TLSv1" without regex */
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tmp_length = g_strlen(value) + 3;
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tmp = g_new(char, tmp_length);
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g_snprintf(tmp, tmp_length, "%s%s%s", ",", value, ",");
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/* replace all spaces with comma */
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/* to accept space after comma */
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while ((pos = g_pos(tmp, " ")) != -1)
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{
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tmp[pos] = ',';
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}
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ssl_get_protocols_from_string(tmp, &(client_info->ssl_protocols));
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g_free(tmp);
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}
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else if (g_strcasecmp(item, "tls_ciphers") == 0)
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{
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client_info->tls_ciphers = g_strdup(value);
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}
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else if (g_strcasecmp(item, "security_layer") == 0)
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{
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if (g_strcasecmp(value, "rdp") == 0)
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{
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client_info->security_layer = PROTOCOL_RDP;
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}
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else if (g_strcasecmp(value, "tls") == 0)
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{
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client_info->security_layer = PROTOCOL_SSL;
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}
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else if (g_strcasecmp(value, "hybrid") == 0)
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{
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client_info->security_layer = PROTOCOL_SSL | PROTOCOL_HYBRID;
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}
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else if (g_strcasecmp(value, "negotiate") == 0)
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{
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client_info->security_layer = PROTOCOL_SSL | PROTOCOL_HYBRID | PROTOCOL_HYBRID_EX;
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}
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else
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{
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log_message(LOG_LEVEL_ERROR, "security_layer=%s is not "
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"recognized, will use security_layer=negotiate",
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value);
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client_info->security_layer = PROTOCOL_SSL | PROTOCOL_HYBRID | PROTOCOL_HYBRID_EX;
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}
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}
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else if (g_strcasecmp(item, "certificate") == 0)
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{
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g_memset(client_info->certificate, 0, sizeof(char) * 1024);
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if (g_strlen(value) == 0)
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{
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/* default certificate path */
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g_snprintf(client_info->certificate, 1023, "%s/cert.pem", XRDP_CFG_PATH);
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log_message(LOG_LEVEL_INFO,
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"Using default X.509 certificate: %s",
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client_info->certificate);
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}
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else if (value[0] != '/')
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{
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/* default certificate path */
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g_snprintf(client_info->certificate, 1023, "%s/cert.pem", XRDP_CFG_PATH);
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log_message(LOG_LEVEL_WARNING,
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"X.509 certificate should use absolute path, using "
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"default instead: %s", client_info->certificate);
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}
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else
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{
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/* use user defined certificate */
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g_strncpy(client_info->certificate, value, 1023);
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}
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if (!g_file_readable(client_info->certificate))
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{
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log_message(LOG_LEVEL_ERROR, "Cannot read certificate file %s: %s",
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client_info->certificate, g_get_strerror());
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}
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}
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else if (g_strcasecmp(item, "key_file") == 0)
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{
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g_memset(client_info->key_file, 0, sizeof(char) * 1024);
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if (g_strlen(value) == 0)
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{
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/* default key_file path */
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g_snprintf(client_info->key_file, 1023, "%s/key.pem", XRDP_CFG_PATH);
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log_message(LOG_LEVEL_INFO, "Using default X.509 key file: %s",
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client_info->key_file);
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}
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else if (value[0] != '/')
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{
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/* default key_file path */
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g_snprintf(client_info->key_file, 1023, "%s/key.pem", XRDP_CFG_PATH);
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log_message(LOG_LEVEL_WARNING,
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"X.509 key file should use absolute path, using "
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"default instead: %s", client_info->key_file);
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}
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else
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{
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/* use user defined key_file */
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g_strncpy(client_info->key_file, value, 1023);
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}
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if (!g_file_readable(client_info->key_file))
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{
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log_message(LOG_LEVEL_ERROR, "Cannot read private key file %s: %s",
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client_info->key_file, g_get_strerror());
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}
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}
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}
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list_delete(items);
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list_delete(values);
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return 0;
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}
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#if defined(XRDP_NEUTRINORDP)
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/*****************************************************************************/
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static void
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cpuid(tui32 info, tui32 *eax, tui32 *ebx, tui32 *ecx, tui32 *edx)
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{
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#ifdef __GNUC__
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#if defined(__i386__) || defined(__x86_64__)
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__asm volatile
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(
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/* The EBX (or RBX register on x86_64) is used for the PIC base address
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and must not be corrupted by our inline assembly. */
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#if defined(__i386__)
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"mov %%ebx, %%esi;"
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"cpuid;"
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"xchg %%ebx, %%esi;"
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#else
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"mov %%rbx, %%rsi;"
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"cpuid;"
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"xchg %%rbx, %%rsi;"
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#endif
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: "=a" (*eax), "=S" (*ebx), "=c" (*ecx), "=d" (*edx)
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: "0" (info)
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);
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#endif
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#endif
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}
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/*****************************************************************************/
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static tui32
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xrdp_rdp_detect_cpu(void)
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{
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tui32 eax;
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tui32 ebx;
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tui32 ecx;
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tui32 edx;
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tui32 cpu_opt;
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eax = 0;
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ebx = 0;
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ecx = 0;
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edx = 0;
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cpu_opt = 0;
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cpuid(1, &eax, &ebx, &ecx, &edx);
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if (edx & (1 << 26))
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{
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DEBUG(("SSE2 detected"));
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cpu_opt |= CPU_SSE2;
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}
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return cpu_opt;
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}
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#endif
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/*****************************************************************************/
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struct xrdp_rdp *
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xrdp_rdp_create(struct xrdp_session *session, struct trans *trans)
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{
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struct xrdp_rdp *self = (struct xrdp_rdp *)NULL;
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int bytes;
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DEBUG(("in xrdp_rdp_create"));
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self = (struct xrdp_rdp *)g_malloc(sizeof(struct xrdp_rdp), 1);
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self->session = session;
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self->share_id = 66538;
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/* read ini settings */
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xrdp_rdp_read_config(&self->client_info);
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/* create sec layer */
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self->sec_layer = xrdp_sec_create(self, trans);
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/* default 8 bit v1 color bitmap cache entries and size */
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self->client_info.cache1_entries = 600;
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self->client_info.cache1_size = 256;
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self->client_info.cache2_entries = 300;
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self->client_info.cache2_size = 1024;
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self->client_info.cache3_entries = 262;
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self->client_info.cache3_size = 4096;
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/* load client ip info */
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bytes = sizeof(self->client_info.client_ip) - 1;
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g_write_ip_address(trans->sck, self->client_info.client_ip, bytes);
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self->mppc_enc = mppc_enc_new(PROTO_RDP_50);
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#if defined(XRDP_NEUTRINORDP)
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self->rfx_enc = rfx_context_new();
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rfx_context_set_cpu_opt(self->rfx_enc, xrdp_rdp_detect_cpu());
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#endif
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self->client_info.size = sizeof(self->client_info);
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DEBUG(("out xrdp_rdp_create"));
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return self;
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}
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/*****************************************************************************/
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void
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xrdp_rdp_delete(struct xrdp_rdp *self)
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{
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if (self == 0)
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{
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return;
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}
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xrdp_sec_delete(self->sec_layer);
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mppc_enc_free(self->mppc_enc);
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#if defined(XRDP_NEUTRINORDP)
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rfx_context_free((RFX_CONTEXT *)(self->rfx_enc));
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#endif
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g_free(self->client_info.tls_ciphers);
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g_free(self);
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}
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/*****************************************************************************/
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int
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xrdp_rdp_init(struct xrdp_rdp *self, struct stream *s)
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{
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if (xrdp_sec_init(self->sec_layer, s) != 0)
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{
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return 1;
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}
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s_push_layer(s, rdp_hdr, 6);
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return 0;
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}
|
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|
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/*****************************************************************************/
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int
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xrdp_rdp_init_data(struct xrdp_rdp *self, struct stream *s)
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{
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if (xrdp_sec_init(self->sec_layer, s) != 0)
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{
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return 1;
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}
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s_push_layer(s, rdp_hdr, 18);
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return 0;
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}
|
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|
|
/*****************************************************************************/
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/* returns error */
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int
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xrdp_rdp_recv(struct xrdp_rdp *self, struct stream *s, int *code)
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{
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int error = 0;
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int len = 0;
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int pdu_code = 0;
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int chan = 0;
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const tui8 *header;
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DEBUG(("in xrdp_rdp_recv"));
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if (s->next_packet == 0 || s->next_packet >= s->end)
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{
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/* check for fastpath first */
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header = (const tui8 *) (s->p);
|
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if (header[0] != 0x3)
|
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{
|
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if (xrdp_sec_recv_fastpath(self->sec_layer, s) != 0)
|
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{
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return 1;
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}
|
|
/* next_packet gets set in xrdp_sec_recv_fastpath */
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*code = 2; // special code for fastpath input
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DEBUG(("out (fastpath) xrdp_rdp_recv"));
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return 0;
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}
|
|
|
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/* not fastpath, do tpkt */
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chan = 0;
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error = xrdp_sec_recv(self->sec_layer, s, &chan);
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|
|
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if (error == -1) /* special code for send demand active */
|
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{
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s->next_packet = 0;
|
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*code = -1;
|
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DEBUG(("out (1) xrdp_rdp_recv"));
|
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return 0;
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}
|
|
|
|
if (error != 0)
|
|
{
|
|
DEBUG(("out xrdp_rdp_recv error"));
|
|
g_writeln("xrdp_rdp_recv: xrdp_sec_recv failed");
|
|
return 1;
|
|
}
|
|
|
|
if ((chan != MCS_GLOBAL_CHANNEL) && (chan > 0))
|
|
{
|
|
if (chan > MCS_GLOBAL_CHANNEL)
|
|
{
|
|
if (xrdp_channel_process(self->sec_layer->chan_layer, s, chan) != 0)
|
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{
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g_writeln("xrdp_channel_process returned unhandled error") ;
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}
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}
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else
|
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{
|
|
if (chan != 1)
|
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{
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g_writeln("Wrong channel Id to be handled by xrdp_channel_process %d", chan);
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|
}
|
|
}
|
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s->next_packet = 0;
|
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*code = 0;
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DEBUG(("out (2) xrdp_rdp_recv"));
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return 0;
|
|
}
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|
|
|
s->next_packet = s->p;
|
|
}
|
|
else
|
|
{
|
|
DEBUG(("xrdp_rdp_recv stream not touched"))
|
|
s->p = s->next_packet;
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|
}
|
|
|
|
if (!s_check_rem(s, 6))
|
|
{
|
|
s->next_packet = 0;
|
|
*code = 0;
|
|
DEBUG(("out (3) xrdp_rdp_recv"));
|
|
len = (int)(s->end - s->p);
|
|
g_writeln("xrdp_rdp_recv: bad RDP packet, length [%d]", len);
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
in_uint16_le(s, len);
|
|
/*g_writeln("New len received : %d next packet: %d s_end: %d",len,s->next_packet,s->end); */
|
|
in_uint16_le(s, pdu_code);
|
|
*code = pdu_code & 0xf;
|
|
in_uint8s(s, 2); /* mcs user id */
|
|
s->next_packet += len;
|
|
DEBUG(("out (4) xrdp_rdp_recv"));
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_send(struct xrdp_rdp *self, struct stream *s, int pdu_type)
|
|
{
|
|
int len = 0;
|
|
|
|
DEBUG(("in xrdp_rdp_send"));
|
|
s_pop_layer(s, rdp_hdr);
|
|
len = s->end - s->p;
|
|
out_uint16_le(s, len);
|
|
out_uint16_le(s, 0x10 | pdu_type);
|
|
out_uint16_le(s, self->mcs_channel);
|
|
|
|
if (xrdp_sec_send(self->sec_layer, s, MCS_GLOBAL_CHANNEL) != 0)
|
|
{
|
|
DEBUG(("out xrdp_rdp_send error"));
|
|
return 1;
|
|
}
|
|
|
|
DEBUG(("out xrdp_rdp_send"));
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_send_data(struct xrdp_rdp *self, struct stream *s,
|
|
int data_pdu_type)
|
|
{
|
|
int len;
|
|
int ctype;
|
|
int clen;
|
|
int dlen;
|
|
int pdulen;
|
|
int pdutype;
|
|
int tocomplen;
|
|
int iso_offset;
|
|
int mcs_offset;
|
|
int sec_offset;
|
|
int rdp_offset;
|
|
struct stream ls;
|
|
struct xrdp_mppc_enc *mppc_enc;
|
|
|
|
DEBUG(("in xrdp_rdp_send_data"));
|
|
s_pop_layer(s, rdp_hdr);
|
|
len = (int)(s->end - s->p);
|
|
pdutype = 0x10 | PDUTYPE_DATAPDU;
|
|
pdulen = len;
|
|
dlen = len;
|
|
ctype = 0;
|
|
clen = len;
|
|
tocomplen = pdulen - 18;
|
|
|
|
if (self->client_info.rdp_compression && self->session->up_and_running)
|
|
{
|
|
mppc_enc = self->mppc_enc;
|
|
if (compress_rdp(mppc_enc, (tui8 *)(s->p + 18), tocomplen))
|
|
{
|
|
DEBUG(("mppc_encode ok flags 0x%x bytes_in_opb %d historyOffset %d "
|
|
"tocomplen %d", mppc_enc->flags, mppc_enc->bytes_in_opb,
|
|
mppc_enc->historyOffset, tocomplen));
|
|
|
|
clen = mppc_enc->bytes_in_opb + 18;
|
|
pdulen = clen;
|
|
ctype = mppc_enc->flags;
|
|
iso_offset = (int)(s->iso_hdr - s->data);
|
|
mcs_offset = (int)(s->mcs_hdr - s->data);
|
|
sec_offset = (int)(s->sec_hdr - s->data);
|
|
rdp_offset = (int)(s->rdp_hdr - s->data);
|
|
|
|
/* outputBuffer has 64 bytes preceding it */
|
|
ls.data = mppc_enc->outputBuffer - (rdp_offset + 18);
|
|
ls.p = ls.data + rdp_offset;
|
|
ls.end = ls.p + clen;
|
|
ls.size = clen;
|
|
ls.iso_hdr = ls.data + iso_offset;
|
|
ls.mcs_hdr = ls.data + mcs_offset;
|
|
ls.sec_hdr = ls.data + sec_offset;
|
|
ls.rdp_hdr = ls.data + rdp_offset;
|
|
ls.channel_hdr = 0;
|
|
ls.next_packet = 0;
|
|
s = &ls;
|
|
}
|
|
else
|
|
{
|
|
LLOGLN(10, ("xrdp_rdp_send_data: mppc_encode not ok "
|
|
"type %d flags %d", mppc_enc->protocol_type,
|
|
mppc_enc->flags));
|
|
}
|
|
}
|
|
|
|
out_uint16_le(s, pdulen);
|
|
out_uint16_le(s, pdutype);
|
|
out_uint16_le(s, self->mcs_channel);
|
|
out_uint32_le(s, self->share_id);
|
|
out_uint8(s, 0);
|
|
out_uint8(s, 1);
|
|
out_uint16_le(s, dlen);
|
|
out_uint8(s, data_pdu_type);
|
|
out_uint8(s, ctype);
|
|
out_uint16_le(s, clen);
|
|
|
|
if (xrdp_sec_send(self->sec_layer, s, MCS_GLOBAL_CHANNEL) != 0)
|
|
{
|
|
DEBUG(("out xrdp_rdp_send_data error"));
|
|
return 1;
|
|
}
|
|
|
|
DEBUG(("out xrdp_rdp_send_data"));
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* returns the fastpath rdp byte count */
|
|
int
|
|
xrdp_rdp_get_fastpath_bytes(struct xrdp_rdp *self)
|
|
{
|
|
if (self->client_info.rdp_compression)
|
|
{
|
|
return 4;
|
|
}
|
|
return 3;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_init_fastpath(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
if (xrdp_sec_init_fastpath(self->sec_layer, s) != 0)
|
|
{
|
|
return 1;
|
|
}
|
|
if (self->client_info.rdp_compression)
|
|
{
|
|
s_push_layer(s, rdp_hdr, 4);
|
|
}
|
|
else
|
|
{
|
|
s_push_layer(s, rdp_hdr, 3);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* returns error */
|
|
/* 2.2.9.1.2.1 Fast-Path Update (TS_FP_UPDATE)
|
|
* http://msdn.microsoft.com/en-us/library/cc240622.aspx */
|
|
int
|
|
xrdp_rdp_send_fastpath(struct xrdp_rdp *self, struct stream *s,
|
|
int data_pdu_type)
|
|
{
|
|
int updateHeader;
|
|
int updateCode;
|
|
int fragmentation;
|
|
int compression;
|
|
int comp_type;
|
|
int comp_len;
|
|
int no_comp_len;
|
|
int send_len;
|
|
int cont;
|
|
int header_bytes;
|
|
int sec_bytes;
|
|
int to_comp_len;
|
|
int sec_offset;
|
|
int rdp_offset;
|
|
struct stream frag_s;
|
|
struct stream comp_s;
|
|
struct stream send_s;
|
|
struct xrdp_mppc_enc *mppc_enc;
|
|
|
|
LLOGLN(10, ("xrdp_rdp_send_fastpath:"));
|
|
s_pop_layer(s, rdp_hdr);
|
|
updateCode = data_pdu_type;
|
|
if (self->client_info.rdp_compression)
|
|
{
|
|
compression = 2;
|
|
header_bytes = 4;
|
|
}
|
|
else
|
|
{
|
|
compression = 0;
|
|
header_bytes = 3;
|
|
}
|
|
sec_bytes = xrdp_sec_get_fastpath_bytes(self->sec_layer);
|
|
fragmentation = 0;
|
|
frag_s = *s;
|
|
sec_offset = (int)(frag_s.sec_hdr - frag_s.data);
|
|
rdp_offset = (int)(frag_s.rdp_hdr - frag_s.data);
|
|
cont = 1;
|
|
while (cont)
|
|
{
|
|
comp_type = 0;
|
|
send_s = frag_s;
|
|
no_comp_len = (int)(frag_s.end - frag_s.p);
|
|
if (no_comp_len > FASTPATH_FRAG_SIZE)
|
|
{
|
|
no_comp_len = FASTPATH_FRAG_SIZE;
|
|
if (fragmentation == 0)
|
|
{
|
|
fragmentation = 2; /* FASTPATH_FRAGMENT_FIRST */
|
|
}
|
|
else if (fragmentation == 2)
|
|
{
|
|
fragmentation = 3; /* FASTPATH_FRAGMENT_NEXT */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (fragmentation != 0)
|
|
{
|
|
fragmentation = 1; /* FASTPATH_FRAGMENT_LAST */
|
|
}
|
|
}
|
|
send_len = no_comp_len;
|
|
LLOGLN(10, ("xrdp_rdp_send_fastpath: no_comp_len %d fragmentation %d",
|
|
no_comp_len, fragmentation));
|
|
if ((compression != 0) && (no_comp_len > header_bytes + 16))
|
|
{
|
|
to_comp_len = no_comp_len - header_bytes;
|
|
mppc_enc = self->mppc_enc;
|
|
if (compress_rdp(mppc_enc, (tui8 *)(frag_s.p + header_bytes),
|
|
to_comp_len))
|
|
{
|
|
comp_len = mppc_enc->bytes_in_opb + header_bytes;
|
|
LLOGLN(10, ("xrdp_rdp_send_fastpath: no_comp_len %d "
|
|
"comp_len %d", no_comp_len, comp_len));
|
|
send_len = comp_len;
|
|
comp_type = mppc_enc->flags;
|
|
/* outputBuffer has 64 bytes preceding it */
|
|
g_memset(&comp_s, 0, sizeof(comp_s));
|
|
comp_s.data = mppc_enc->outputBuffer -
|
|
(rdp_offset + header_bytes);
|
|
comp_s.p = comp_s.data + rdp_offset;
|
|
comp_s.end = comp_s.p + send_len;
|
|
comp_s.size = send_len;
|
|
comp_s.sec_hdr = comp_s.data + sec_offset;
|
|
comp_s.rdp_hdr = comp_s.data + rdp_offset;
|
|
send_s = comp_s;
|
|
}
|
|
else
|
|
{
|
|
LLOGLN(10, ("xrdp_rdp_send_fastpath: mppc_encode not ok "
|
|
"type %d flags %d", mppc_enc->protocol_type,
|
|
mppc_enc->flags));
|
|
}
|
|
}
|
|
updateHeader = (updateCode & 15) |
|
|
((fragmentation & 3) << 4) |
|
|
((compression & 3) << 6);
|
|
out_uint8(&send_s, updateHeader);
|
|
if (compression != 0)
|
|
{
|
|
out_uint8(&send_s, comp_type);
|
|
}
|
|
send_len -= header_bytes;
|
|
out_uint16_le(&send_s, send_len);
|
|
send_s.end = send_s.p + send_len;
|
|
if (xrdp_sec_send_fastpath(self->sec_layer, &send_s) != 0)
|
|
{
|
|
LLOGLN(0, ("xrdp_rdp_send_fastpath: xrdp_fastpath_send failed"));
|
|
return 1;
|
|
}
|
|
frag_s.p += no_comp_len;
|
|
cont = frag_s.p < frag_s.end;
|
|
frag_s.p -= header_bytes;
|
|
frag_s.sec_hdr = frag_s.p - sec_bytes;
|
|
frag_s.data = frag_s.sec_hdr;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_send_data_update_sync(struct xrdp_rdp *self)
|
|
{
|
|
struct stream *s = (struct stream *)NULL;
|
|
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
DEBUG(("in xrdp_rdp_send_data_update_sync"));
|
|
|
|
if (self->client_info.use_fast_path & 1) /* fastpath output supported */
|
|
{
|
|
LLOGLN(10, ("xrdp_rdp_send_data_update_sync: fastpath"));
|
|
if (xrdp_rdp_init_fastpath(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
}
|
|
else /* slowpath */
|
|
{
|
|
if (xrdp_rdp_init_data(self, s) != 0)
|
|
{
|
|
DEBUG(("out xrdp_rdp_send_data_update_sync error"));
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
out_uint16_le(s, RDP_UPDATE_SYNCHRONIZE);
|
|
out_uint16_le(s, 0); /* pad */
|
|
}
|
|
|
|
s_mark_end(s);
|
|
|
|
if (self->client_info.use_fast_path & 1) /* fastpath output supported */
|
|
{
|
|
if (xrdp_rdp_send_fastpath(self, s,
|
|
FASTPATH_UPDATETYPE_SYNCHRONIZE) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
}
|
|
else /* slowpath */
|
|
{
|
|
if (xrdp_rdp_send_data(self, s, RDP_DATA_PDU_UPDATE) != 0)
|
|
{
|
|
DEBUG(("out xrdp_rdp_send_data_update_sync error"));
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
|
|
DEBUG(("out xrdp_rdp_send_data_update_sync"));
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_incoming(struct xrdp_rdp *self)
|
|
{
|
|
struct xrdp_iso *iso;
|
|
iso = self->sec_layer->mcs_layer->iso_layer;
|
|
|
|
DEBUG(("in xrdp_rdp_incoming"));
|
|
|
|
if (xrdp_sec_incoming(self->sec_layer) != 0)
|
|
{
|
|
return 1;
|
|
}
|
|
self->mcs_channel = self->sec_layer->mcs_layer->userid +
|
|
MCS_USERCHANNEL_BASE;
|
|
DEBUG(("out xrdp_rdp_incoming mcs channel %d", self->mcs_channel));
|
|
g_strncpy(self->client_info.client_addr, iso->trans->addr,
|
|
sizeof(self->client_info.client_addr) - 1);
|
|
g_strncpy(self->client_info.client_port, iso->trans->port,
|
|
sizeof(self->client_info.client_port) - 1);
|
|
|
|
/* log TLS version and cipher of TLS connections */
|
|
if (iso->selectedProtocol > PROTOCOL_RDP)
|
|
{
|
|
log_message(LOG_LEVEL_INFO,
|
|
"TLS connection established from %s port %s: %s with cipher %s",
|
|
self->client_info.client_addr,
|
|
self->client_info.client_port,
|
|
iso->trans->ssl_protocol,
|
|
iso->trans->cipher_name);
|
|
}
|
|
/* log non-TLS connections */
|
|
else
|
|
{
|
|
log_message(LOG_LEVEL_INFO,
|
|
"Non-TLS connection established from %s port %s: "
|
|
"encrypted with standard RDP security",
|
|
self->client_info.client_addr,
|
|
self->client_info.client_port);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_process_data_pointer(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* RDP_DATA_PDU_INPUT */
|
|
static int
|
|
xrdp_rdp_process_data_input(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
int num_events;
|
|
int index;
|
|
int msg_type;
|
|
int device_flags;
|
|
int param1;
|
|
int param2;
|
|
int time;
|
|
|
|
if (!s_check_rem(s, 4))
|
|
{
|
|
return 1;
|
|
}
|
|
in_uint16_le(s, num_events);
|
|
in_uint8s(s, 2); /* pad */
|
|
DEBUG(("in xrdp_rdp_process_data_input %d events", num_events));
|
|
|
|
for (index = 0; index < num_events; index++)
|
|
{
|
|
if (!s_check_rem(s, 12))
|
|
{
|
|
return 1;
|
|
}
|
|
in_uint32_le(s, time);
|
|
in_uint16_le(s, msg_type);
|
|
in_uint16_le(s, device_flags);
|
|
in_sint16_le(s, param1);
|
|
in_sint16_le(s, param2);
|
|
DEBUG(("xrdp_rdp_process_data_input event %4.4x flags %4.4x param1 %d "
|
|
"param2 %d time %d", msg_type, device_flags, param1, param2, time));
|
|
|
|
if (self->session->callback != 0)
|
|
{
|
|
/* msg_type can be
|
|
RDP_INPUT_SYNCHRONIZE - 0
|
|
RDP_INPUT_SCANCODE - 4
|
|
RDP_INPUT_MOUSE - 0x8001
|
|
RDP_INPUT_MOUSEX - 0x8002 */
|
|
/* call to xrdp_wm.c : callback */
|
|
self->session->callback(self->session->id, msg_type, param1, param2,
|
|
device_flags, time);
|
|
}
|
|
}
|
|
|
|
DEBUG(("out xrdp_rdp_process_data_input"));
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_send_synchronise(struct xrdp_rdp *self)
|
|
{
|
|
struct stream *s;
|
|
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
|
|
if (xrdp_rdp_init_data(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
out_uint16_le(s, 1); /* messageType (2 bytes) */
|
|
out_uint16_le(s, 1002); /* targetUser (2 bytes) */
|
|
s_mark_end(s);
|
|
|
|
if (xrdp_rdp_send_data(self, s, RDP_DATA_PDU_SYNCHRONISE) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_send_control(struct xrdp_rdp *self, int action)
|
|
{
|
|
struct stream *s;
|
|
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
|
|
if (xrdp_rdp_init_data(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
out_uint16_le(s, action);
|
|
out_uint16_le(s, 0); /* userid */
|
|
out_uint32_le(s, 1002); /* control id */
|
|
s_mark_end(s);
|
|
|
|
if (xrdp_rdp_send_data(self, s, RDP_DATA_PDU_CONTROL) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_process_data_control(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
int action;
|
|
|
|
DEBUG(("xrdp_rdp_process_data_control"));
|
|
in_uint16_le(s, action);
|
|
in_uint8s(s, 2); /* user id */
|
|
in_uint8s(s, 4); /* control id */
|
|
|
|
if (action == RDP_CTL_REQUEST_CONTROL)
|
|
{
|
|
DEBUG(("xrdp_rdp_process_data_control got RDP_CTL_REQUEST_CONTROL"));
|
|
DEBUG(("xrdp_rdp_process_data_control calling xrdp_rdp_send_synchronise"));
|
|
xrdp_rdp_send_synchronise(self);
|
|
DEBUG(("xrdp_rdp_process_data_control sending RDP_CTL_COOPERATE"));
|
|
xrdp_rdp_send_control(self, RDP_CTL_COOPERATE);
|
|
DEBUG(("xrdp_rdp_process_data_control sending RDP_CTL_GRANT_CONTROL"));
|
|
xrdp_rdp_send_control(self, RDP_CTL_GRANT_CONTROL);
|
|
}
|
|
else
|
|
{
|
|
DEBUG(("xrdp_rdp_process_data_control unknown action"));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_process_data_sync(struct xrdp_rdp *self)
|
|
{
|
|
DEBUG(("xrdp_rdp_process_data_sync"));
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_process_screen_update(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
int left;
|
|
int top;
|
|
int right;
|
|
int bottom;
|
|
int cx;
|
|
int cy;
|
|
|
|
in_uint8s(s, 4); /* op */
|
|
in_uint16_le(s, left);
|
|
in_uint16_le(s, top);
|
|
in_uint16_le(s, right);
|
|
in_uint16_le(s, bottom);
|
|
cx = (right - left) + 1;
|
|
cy = (bottom - top) + 1;
|
|
|
|
if (self->session->callback != 0)
|
|
{
|
|
self->session->callback(self->session->id, 0x4444, left, top, cx, cy);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_send_fontmap(struct xrdp_rdp *self)
|
|
{
|
|
struct stream *s;
|
|
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
|
|
if (xrdp_rdp_init_data(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
out_uint16_le(s, 0); /* numberEntries */
|
|
out_uint16_le(s, 0); /* totalNumEntries */
|
|
out_uint16_le(s, 0x3); /* mapFlags (sequence flags) */
|
|
out_uint16_le(s, 0x4); /* entrySize */
|
|
|
|
s_mark_end(s);
|
|
|
|
if (xrdp_rdp_send_data(self, s, 0x28) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_process_data_font(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
int seq;
|
|
|
|
DEBUG(("in xrdp_rdp_process_data_font"));
|
|
in_uint8s(s, 2); /* NumberFonts: 0x0, SHOULD be set to 0 */
|
|
in_uint8s(s, 2); /* TotalNumberFonts: 0x0, SHOULD be set to 0 */
|
|
in_uint16_le(s, seq); /* ListFlags */
|
|
|
|
/* 419 client sends Seq 1, then 2 */
|
|
/* 2600 clients sends only Seq 3 */
|
|
if (seq == 2 || seq == 3) /* after second font message, we are up and */
|
|
{
|
|
/* running */
|
|
DEBUG(("sending fontmap"));
|
|
xrdp_rdp_send_fontmap(self);
|
|
|
|
self->session->up_and_running = 1;
|
|
g_writeln("yeah, up_and_running");
|
|
DEBUG(("up_and_running set"));
|
|
xrdp_rdp_send_data_update_sync(self);
|
|
xrdp_channel_drdynvc_start(self->sec_layer->chan_layer);
|
|
}
|
|
|
|
DEBUG(("out xrdp_rdp_process_data_font"));
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* sent 37 pdu */
|
|
static int
|
|
xrdp_rdp_send_disconnect_query_response(struct xrdp_rdp *self)
|
|
{
|
|
struct stream *s;
|
|
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
|
|
if (xrdp_rdp_init_data(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
s_mark_end(s);
|
|
|
|
if (xrdp_rdp_send_data(self, s, 37) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|
|
#if 0 /* not used */
|
|
/*****************************************************************************/
|
|
/* sent RDP_DATA_PDU_DISCONNECT 47 pdu */
|
|
static int
|
|
xrdp_rdp_send_disconnect_reason(struct xrdp_rdp *self, int reason)
|
|
{
|
|
struct stream *s;
|
|
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
|
|
if (xrdp_rdp_init_data(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
out_uint32_le(s, reason);
|
|
s_mark_end(s);
|
|
|
|
if (xrdp_rdp_send_data(self, s, RDP_DATA_PDU_DISCONNECT) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************/
|
|
static int
|
|
xrdp_rdp_process_frame_ack(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
int frame_id;
|
|
|
|
//g_writeln("xrdp_rdp_process_frame_ack:");
|
|
in_uint32_le(s, frame_id);
|
|
//g_writeln(" frame_id %d", frame_id);
|
|
if (self->session->callback != 0)
|
|
{
|
|
/* call to xrdp_wm.c : callback */
|
|
self->session->callback(self->session->id, 0x5557, frame_id, 0,
|
|
0, 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* RDP_PDU_DATA */
|
|
int
|
|
xrdp_rdp_process_data(struct xrdp_rdp *self, struct stream *s)
|
|
{
|
|
int data_type;
|
|
|
|
in_uint8s(s, 6);
|
|
in_uint8s(s, 2); /* len */
|
|
in_uint8(s, data_type);
|
|
in_uint8s(s, 1); /* ctype */
|
|
in_uint8s(s, 2); /* clen */
|
|
DEBUG(("xrdp_rdp_process_data code %d", data_type));
|
|
|
|
switch (data_type)
|
|
{
|
|
case RDP_DATA_PDU_POINTER: /* 27(0x1b) */
|
|
xrdp_rdp_process_data_pointer(self, s);
|
|
break;
|
|
case RDP_DATA_PDU_INPUT: /* 28(0x1c) */
|
|
xrdp_rdp_process_data_input(self, s);
|
|
break;
|
|
case RDP_DATA_PDU_CONTROL: /* 20(0x14) */
|
|
xrdp_rdp_process_data_control(self, s);
|
|
break;
|
|
case RDP_DATA_PDU_SYNCHRONISE: /* 31(0x1f) */
|
|
xrdp_rdp_process_data_sync(self);
|
|
break;
|
|
case 33: /* 33(0x21) ?? Invalidate an area I think */
|
|
xrdp_rdp_process_screen_update(self, s);
|
|
break;
|
|
case 35: /* 35(0x23) */
|
|
/* 35 ?? this comes when minimizing a full screen mstsc.exe 2600 */
|
|
/* I think this is saying the client no longer wants screen */
|
|
/* updates and it will issue a 33 above to catch up */
|
|
/* so minimized apps don't take bandwidth */
|
|
break;
|
|
case 36: /* 36(0x24) ?? disconnect query? */
|
|
/* when this message comes, send a 37 back so the client */
|
|
/* is sure the connection is alive and it can ask if user */
|
|
/* really wants to disconnect */
|
|
xrdp_rdp_send_disconnect_query_response(self); /* send a 37 back */
|
|
break;
|
|
case RDP_DATA_PDU_FONT2: /* 39(0x27) */
|
|
xrdp_rdp_process_data_font(self, s);
|
|
break;
|
|
case 56: /* PDUTYPE2_FRAME_ACKNOWLEDGE 0x38 */
|
|
xrdp_rdp_process_frame_ack(self, s);
|
|
break;
|
|
default:
|
|
g_writeln("unknown in xrdp_rdp_process_data %d", data_type);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_disconnect(struct xrdp_rdp *self)
|
|
{
|
|
int rv;
|
|
|
|
DEBUG(("in xrdp_rdp_disconnect"));
|
|
rv = xrdp_sec_disconnect(self->sec_layer);
|
|
DEBUG(("out xrdp_rdp_disconnect"));
|
|
return rv;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_send_deactivate(struct xrdp_rdp *self)
|
|
{
|
|
struct stream *s;
|
|
|
|
DEBUG(("in xrdp_rdp_send_deactivate"));
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
|
|
if (xrdp_rdp_init(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
DEBUG(("out xrdp_rdp_send_deactivate error"));
|
|
return 1;
|
|
}
|
|
|
|
s_mark_end(s);
|
|
|
|
if (xrdp_rdp_send(self, s, PDUTYPE_DEACTIVATEALLPDU) != 0)
|
|
{
|
|
free_stream(s);
|
|
DEBUG(("out xrdp_rdp_send_deactivate error"));
|
|
return 1;
|
|
}
|
|
|
|
free_stream(s);
|
|
DEBUG(("out xrdp_rdp_send_deactivate"));
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_rdp_send_session_info(struct xrdp_rdp *self, const char *data,
|
|
int data_bytes)
|
|
{
|
|
struct stream *s;
|
|
|
|
LLOGLN(0, ("xrdp_rdp_send_session_info: data_bytes %d", data_bytes));
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
|
|
if (xrdp_rdp_init_data(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
if (s_check_rem_out(s, data_bytes))
|
|
{
|
|
out_uint8a(s, data, data_bytes);
|
|
}
|
|
else
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
s_mark_end(s);
|
|
|
|
if (xrdp_rdp_send_data(self, s, RDP_DATA_PDU_LOGON) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|