--- /dev/null
+/*
+ rdesktop: A Remote Desktop Protocol client.
+ RDP licensing negotiation
+ Copyright (C) Matthew Chapman 1999-2002
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "rdesktop.h"
+
+#include <openssl/rc4.h>
+
+extern char g_username[16];
+extern char hostname[16];
+
+static uint8 g_licence_key[16];
+static uint8 g_licence_sign_key[16];
+
+BOOL g_licence_issued = False;
+
+/* Generate a session key and RC4 keys, given client and server randoms */
+void
+licence_generate_keys(uint8 * client_key, uint8 * server_key, uint8 * client_rsa)
+{
+ uint8 session_key[48];
+ uint8 temp_hash[48];
+
+ /* Generate session key - two rounds of sec_hash_48 */
+ sec_hash_48(temp_hash, client_rsa, client_key, server_key, 65);
+ sec_hash_48(session_key, temp_hash, server_key, client_key, 65);
+
+ /* Store first 16 bytes of session key, for generating signatures */
+ memcpy(g_licence_sign_key, session_key, 16);
+
+ /* Generate RC4 key */
+ sec_hash_16(g_licence_key, &session_key[16], client_key, server_key);
+
+ {
+ int i;
+
+ printf("g_license_key:\n");
+ for (i = 0; i < 16; ++i)
+ printf(" 0x%02x", g_licence_key[i]);
+ printf("\n");
+
+ printf("g_license_sign_key:\n");
+ for (i = 0; i < 16; ++i)
+ printf(" 0x%02x", g_licence_sign_key[i]);
+ printf("\n");
+ }
+}
+
0x69, 0x00, 0x6f, 0x00, 0x6e, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x41, 0x00, 0x30, 0x00,
0x32, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0x04, 0xf6, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x0e, 0x00, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x73, 0x6f, 0x66,
- 0x74, 0x2e, 0x63, 0x6f, 0x6d, 0x00
+ 0x74, 0x2e, 0x63, 0x6f, 0x6d, 0x00
};
+unsigned char authreq_license[] = {
+ 0x02, 0x03, 0x26, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x0a, 0x00, 0x37, 0x58, 0x0f, 0xc6,
+ 0x59, 0xfb, 0x03, 0xb2, 0x2a, 0xb7, 0xfa, 0x65, 0xac, 0x02, 0x8d, 0x8b, 0xda, 0xf7, 0xc5, 0x20,
+ 0x1b, 0xe3, 0x65, 0x26, 0xc4, 0x6a
+};
+unsigned char result_license[] = {
+ 0xff, 0x03, 0x10, 0x00, 0x08, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x6a, 0xbd, 0x00, 0x00
+};
+
+#define EXPECT8(value) { in_uint8(s, unknown); if (unknown != (value)) printf("Unknown value on code line %u; expected 0x%x, got 0x%x\n", __LINE__, (value), unknown); }
+#define EXPECT16(value) { in_uint16_le(s, unknown); if (unknown != (value)) printf("Unknown value on code line %u; expected 0x%x, got 0x%x\n", __LINE__, (value), unknown); }
+#define EXPECT32(value) { in_uint32_le(s, unknown); if (unknown != (value)) printf("Unknown value on code line %u; expected 0x%x, got 0x%x\n", __LINE__, (value), unknown); }
+
+void
+process_presented_license(STREAM s)
+{
+ unsigned char client_license_random[SEC_RANDOM_SIZE];
+ unsigned char client_license_rsa_data[SEC_MODULUS_SIZE];
+
+ uint16 length, license_size;
+ uint32 unknown;
+ uint8 *license, hwid[LICENCE_HWID_SIZE], signature[LICENCE_SIGNATURE_SIZE];
+ int i;
+
+ EXPECT8(2); // version
+ in_uint16_le(s, length);
+
+ EXPECT32(1); // unknown
+ EXPECT16(0);
+ EXPECT16(0x0201);
+
+ in_uint8a(s, client_license_random, SEC_RANDOM_SIZE);
+ EXPECT16(0);
+ EXPECT16(SEC_MODULUS_SIZE + SEC_PADDING_SIZE);
+ in_uint8a(s, client_license_rsa_data, SEC_MODULUS_SIZE);
+ in_uint8s(s, SEC_PADDING_SIZE);
+
+ EXPECT16(1);
+ in_uint16_le(s, license_size);
+
+ license = (uint8 *)xmalloc(license_size);
+ in_uint8a(s, license, license_size);
+
+ printf("Received license:\n");
+ for (i = 0; i < license_size; ++i)
+ printf(" 0x%02x", license[i]);
+ printf("\n");
+
+ EXPECT16(1);
+ EXPECT16(LICENCE_HWID_SIZE);
+ in_uint8a(s, hwid, LICENCE_HWID_SIZE);
+
+ printf("License hardware ID:\n");
+ for (i = 0; i < LICENCE_HWID_SIZE; ++i)
+ printf(" 0x%02x", hwid[i]);
+ printf("\n");
+
+ in_uint8a(s, signature, LICENCE_SIGNATURE_SIZE);
+
+ if (!s_check_end(s)) {
+ printf("Unknown data at the end of presented license!");
+ }
+
+ // now we can generate the keys we need
+ licence_generate_keys(client_license_random, demand_license + 4, client_license_rsa_data);
+}
/* Receive secure transport packet */
STREAM
if (sec_flags & SEC_LICENCE_NEG)
{
- printf("SEC_LICENSE_NEG unknown\n");
+ uint8 tag;
+ in_uint8(s, tag);
+ printf("SEC_LICENSE_NEG tag %x\n", tag);
+
+ if (tag == LICENCE_TAG_PRESENT) {
+ process_presented_license(s);
+ }
+
//licence_process(s);
continue;
}