mirror of https://github.com/neutrinolabs/xrdp
Replace binary blob with specified data
This commit changes the license response PDU to be constructed rather
than simply being contained as a binary blob.
Some constants in common/ms-rdpbcgr.h are renamed with the values
from the specification.
(cherry picked from commit 52dd88b576)
This commit is contained in:
matt335672
Koichiro Iwao
parent
3108a85e86
commit
b343ca27b1
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@ -58,6 +58,10 @@
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#define SEC_TAG_CLI_4 0xc004 /* CS_CLUSTER? */
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#define SEC_TAG_CLI_MONITOR 0xc005 /* CS_MONITOR */
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#define SEC_TAG_CLI_MONITOR_EX 0xc008 /* CS_MONITOR_EX */
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#define SEC_TAG_SRV_INFO 0x0c01 /* SC_CORE */
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#define SEC_TAG_SRV_CRYPT 0x0c02 /* SC_SECURITY */
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#define SEC_TAG_SRV_CHANNELS 0x0c03 /* SC_NET? */
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/* Client Core Data: colorDepth, postBeta2ColorDepth (2.2.1.3.2) */
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#define RNS_UD_COLOR_4BPP 0xCA00
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@ -159,9 +163,16 @@
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#define RDP5_NO_CURSOR_SHADOW 0x20
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#define RDP5_NO_CURSORSETTINGS 0x40 /* disables cursor blinking */
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/* LICENSE_PREAMBLE (2.2.1.12.1.1) */
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#define ERROR_ALERT 0xff
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#define PREAMBLE_VERSION_3_0 0x03
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/* LICENSE_BINARY_BLOB (2.2.1.12.1.2) */
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#define LICENCE_TAG_USER 0x000f /* BB_CLIENT_USER_NAME_BLOB */
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#define LICENCE_TAG_HOST 0x0010 /* BB_CLIENT_MACHINE_NAME_BLOB */
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#define BB_ERROR_BLOB 0x0004
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/* LICENSE_ERROR_MESSAGE (2.2.1.12.1.3) */
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#define STATUS_VALID_CLIENT 0x00000007
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#define ST_NO_TRANSITION 0x00000002
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/* Maps to generalCapabilitySet in T.128 page 138 */
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@ -452,15 +463,11 @@
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#define PDUTYPE2_MONITOR_LAYOUT_PDU 55
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/* TS_SECURITY_HEADER: flags (2.2.8.1.1.2.1) */
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/* TODO: to be renamed */
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#define SEC_CLIENT_RANDOM 0x0001 /* SEC_EXCHANGE_PKT? */
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#define SEC_EXCHANGE_PKT 0x0001
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#define SEC_ENCRYPT 0x0008
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#define SEC_LOGON_INFO 0x0040 /* SEC_INFO_PKT */
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#define SEC_LICENCE_NEG 0x0080 /* SEC_LICENSE_PKT */
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#define SEC_TAG_SRV_INFO 0x0c01 /* SC_CORE */
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#define SEC_TAG_SRV_CRYPT 0x0c02 /* SC_SECURITY */
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#define SEC_TAG_SRV_CHANNELS 0x0c03 /* SC_NET? */
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#define SEC_INFO_PKT 0x0040
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#define SEC_LICENSE_PKT 0x0080
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#define SEC_LICENSE_ENCRYPT_CS 0x0280
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/* Slow-Path Input Event: messageType (2.2.8.1.1.3.1.1) */
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/* TODO: to be renamed */
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@ -43,43 +43,6 @@ static tui8 g_pad_92[48] =
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92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92
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};
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/*****************************************************************************/
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/* Licensing success response v3 PDU
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*
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* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
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* [MS-RDPELE] LICENSE_ERROR_MESSAGE with STATUS_VALID_CLIENT
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*
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* used for Media Center Edition
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*/
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/* some compilers need unsigned char to avoid warnings */
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static tui8 g_lic3[20] =
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{
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/* S */
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/* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
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* flags (2) = 0x0280 (SEC_LICENSE_PKT | SEC_LICENSE_ENCRYPT_CS)
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* flagsHi (2) = unused (arbitrary data)
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* [MS-RDPBCGR] LICENSE_PREAMBLE
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* bMsgType (1) = 0xff (ERROR_ALERT)
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* flags (1) = 0x03 (PREAMBLE_VERSION_3_0)
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* wMsgSize (2) = 0x0010 (16, excludes the 4 bytes TS_SECURITY_HEADER Basic)
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*/
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0x80, 0x02, 0x10, 0x00, 0xff, 0x03, 0x10, 0x00,
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/*
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* [MS-RDPBCGR] LICENSE_ERROR_MESSAGE
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* dwErrorCode (4) = 0x00000007 (STATUS_VALID_CLIENT)
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* dwStateTransition (4) = 0x00000002 (ST_NO_TRANSITION)
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* bbErrorInfo = <LICENSE_BINARY_BLOB>
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*/
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0x07, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
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/*
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* [MS-RDPBCGR] LICENSE_BINARY_BLOB
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* wBlobType (2) = 0x0004 (BB_ERROR_BLOB)
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* wBlobLen (2) = 0x0000 (0)
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*/
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0x04, 0x00, 0x00, 0x00
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};
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static const tui8 g_fips_reverse_table[256] =
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{
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0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
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@ -1010,8 +973,8 @@ xrdp_sec_process_logon_info(struct xrdp_sec *self, struct stream *s)
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/*****************************************************************************/
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/*
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* Send a [MS-RDPELE] LICENSE_ERROR_MESSAGE with STATUS_VALID_CLIENT
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* See also: [MS-RDPELE] 1.3.3 Licensing PDU Flows
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* Send a [MS-RDPBCGR] Server License Error PDU (2.2.1.12) with
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* STATUS_VALID_CLIENT
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*/
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/* returns error */
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static int
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@ -1029,13 +992,34 @@ xrdp_sec_send_lic_response(struct xrdp_sec *self)
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return 1;
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}
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out_uint8a(s, g_lic3, sizeof(g_lic3));
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/* [MS-RDPBCGR] TS_SECURITY_HEADER */
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/* A careful reading of [MS-RDPBCGR] 2.2.1.12 shows that a securityHeader
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* MUST be included, and provided the flag fields of the header does
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* not contain SEC_ENCRYPT, it is always possible to send a basic
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* security header */
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out_uint16_le(s, SEC_LICENSE_PKT | SEC_LICENSE_ENCRYPT_CS); /* flags */
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out_uint16_le(s, 0); /* flagsHi */
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/* [MS-RDPBCGR] LICENSE_VALID_CLIENT_DATA */
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/* preamble (LICENSE_PREAMBLE) */
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out_uint8(s, ERROR_ALERT);
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out_uint8(s, PREAMBLE_VERSION_3_0);
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out_uint16_le(s, 16); /* Message size, including pre-amble */
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/* validClientMessage */
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/* From [MS-RDPBCGR] 2.2.12.1, dwStateTransition must be ST_NO_TRANSITION,
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* and the bbErrorInfo field must contain an empty blob of type
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* BB_ERROR_BLOB */
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out_uint32_le(s, STATUS_VALID_CLIENT); /* dwErrorCode */
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out_uint32_le(s, ST_NO_TRANSITION); /* dwStateTransition */
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out_uint16_le(s, BB_ERROR_BLOB); /* wBlobType */
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out_uint16_le(s, 0); /* wBlobLen */
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s_mark_end(s);
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LOG_DEVEL(LOG_LEVEL_TRACE, "Sending [MS-RDPELE] LICENSE_ERROR_MESSAGE with STATUS_VALID_CLIENT");
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LOG_DEVEL(LOG_LEVEL_TRACE, "Sending [MS-RDPBCGR] Server License Error PDU with STATUS_VALID_CLIENT");
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if (xrdp_mcs_send(self->mcs_layer, s, MCS_GLOBAL_CHANNEL) != 0)
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{
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LOG(LOG_LEVEL_ERROR, "Sending [MS-RDPELE] LICENSE_ERROR_MESSAGE with STATUS_VALID_CLIENT failed");
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LOG(LOG_LEVEL_ERROR, "Sending [MS-RDPBCGR] Server License Error PDU with STATUS_VALID_CLIENT failed");
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free_stream(s);
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return 1;
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}
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@ -1404,7 +1388,7 @@ xrdp_sec_recv(struct xrdp_sec *self, struct stream *s, int *chan)
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}
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}
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if (flags & SEC_CLIENT_RANDOM) /* 0x01 TS_SECURITY_PACKET */
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if (flags & SEC_EXCHANGE_PKT) /* 0x01 TS_SECURITY_PACKET */
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{
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if (!s_check_rem_and_log(s, 4, "Parsing [MS-RDPBCGR] TS_SECURITY_PACKET"))
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{
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@ -1443,7 +1427,7 @@ xrdp_sec_recv(struct xrdp_sec *self, struct stream *s, int *chan)
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return 0;
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}
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if (flags & SEC_LOGON_INFO) /* 0x40 SEC_INFO_PKT */
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if (flags & SEC_INFO_PKT)
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{
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if (xrdp_sec_process_logon_info(self, s) != 0)
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{
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