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/* |
/* -*- c-basic-offset: 8 -*- |
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rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
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Protocol services - ISO layer |
Protocol services - ISO layer |
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Copyright (C) Matthew Chapman 1999-2001 |
Copyright (C) Matthew Chapman 1999-2005 |
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This program is free software; you can redistribute it and/or modify |
This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
it under the terms of the GNU General Public License as published by |
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tcp_send(s); |
tcp_send(s); |
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} |
} |
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static void |
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iso_send_connection_request(char *username) |
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{ |
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STREAM s; |
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int length = 30 + strlen(username); |
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s = tcp_init(length); |
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out_uint8(s, 3); /* version */ |
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out_uint8(s, 0); /* reserved */ |
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out_uint16_be(s, length); /* length */ |
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out_uint8(s, length - 5); /* hdrlen */ |
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out_uint8(s, ISO_PDU_CR); |
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out_uint16(s, 0); /* dst_ref */ |
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out_uint16(s, 0); /* src_ref */ |
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out_uint8(s, 0); /* class */ |
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out_uint8p(s, "Cookie: mstshash=", strlen("Cookie: mstshash=")); |
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out_uint8p(s, username, strlen(username)); |
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out_uint8(s, 0x0d); /* Unknown */ |
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out_uint8(s, 0x0a); /* Unknown */ |
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s_mark_end(s); |
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tcp_send(s); |
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} |
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/* Receive a message on the ISO layer, return code */ |
/* Receive a message on the ISO layer, return code */ |
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static STREAM |
static STREAM |
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iso_recv_msg(uint8 *code) |
iso_recv_msg(uint8 * code, uint8 * rdpver) |
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{ |
{ |
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STREAM s; |
STREAM s; |
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uint16 length; |
uint16 length; |
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uint8 version; |
uint8 version; |
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s = tcp_recv(4); |
s = tcp_recv(NULL, 4); |
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if (s == NULL) |
if (s == NULL) |
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return False; |
return NULL; |
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in_uint8(s, version); |
in_uint8(s, version); |
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if (version != 3) |
if (rdpver != NULL) |
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*rdpver = version; |
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if (version == 3) |
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{ |
{ |
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error("TPKT v%d\n", version); |
in_uint8s(s, 1); /* pad */ |
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return False; |
in_uint16_be(s, length); |
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} |
} |
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else |
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in_uint8s(s, 1); /* pad */ |
{ |
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in_uint16_be(s, length); |
in_uint8(s, length); |
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if (length & 0x80) |
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s = tcp_recv(length - 4); |
{ |
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length &= ~0x80; |
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next_be(s, length); |
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} |
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} |
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s = tcp_recv(s, length - 4); |
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if (s == NULL) |
if (s == NULL) |
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return False; |
return NULL; |
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if (version != 3) |
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return s; |
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in_uint8s(s, 1); /* hdrlen */ |
in_uint8s(s, 1); /* hdrlen */ |
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in_uint8(s, *code); |
in_uint8(s, *code); |
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if (*code == ISO_PDU_DT) |
if (*code == ISO_PDU_DT) |
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{ |
{ |
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in_uint8s(s, 1); /* eot */ |
in_uint8s(s, 1); /* eot */ |
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return s; |
return s; |
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} |
} |
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in_uint8s(s, 5); /* dst_ref, src_ref, class */ |
in_uint8s(s, 5); /* dst_ref, src_ref, class */ |
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return s; |
return s; |
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} |
} |
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/* Receive ISO transport data packet */ |
/* Receive ISO transport data packet */ |
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STREAM |
STREAM |
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iso_recv() |
iso_recv(uint8 * rdpver) |
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{ |
{ |
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STREAM s; |
STREAM s; |
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uint8 code; |
uint8 code = 0; |
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s = iso_recv_msg(&code); |
s = iso_recv_msg(&code, rdpver); |
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if ((s == NULL) || (code != ISO_PDU_DT)) |
if (s == NULL) |
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return NULL; |
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if (rdpver != NULL) |
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if (*rdpver != 3) |
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return s; |
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if (code != ISO_PDU_DT) |
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{ |
{ |
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error("expected DT, got %d\n", code); |
error("expected DT, got 0x%x\n", code); |
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return False; |
return NULL; |
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} |
} |
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return s; |
return s; |
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} |
} |
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/* Establish a connection up to the ISO layer */ |
/* Establish a connection up to the ISO layer */ |
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BOOL |
BOOL |
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iso_connect(char *server) |
iso_connect(char *server, char *username) |
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{ |
{ |
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uint8 code; |
uint8 code = 0; |
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if (!tcp_connect(server)) |
if (!tcp_connect(server)) |
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return False; |
return False; |
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iso_send_msg(ISO_PDU_CR); |
iso_send_connection_request(username); |
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if (iso_recv_msg(&code, NULL) == NULL) |
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return False; |
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if ((iso_recv_msg(&code) == NULL) || (code != ISO_PDU_CC)) |
if (code != ISO_PDU_CC) |
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{ |
{ |
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error("expected CC, got %d\n", code); |
error("expected CC, got 0x%x\n", code); |
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tcp_disconnect(); |
tcp_disconnect(); |
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return False; |
return False; |
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} |
} |
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/* Disconnect from the ISO layer */ |
/* Disconnect from the ISO layer */ |
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void |
void |
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iso_disconnect() |
iso_disconnect(void) |
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{ |
{ |
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iso_send_msg(ISO_PDU_DR); |
iso_send_msg(ISO_PDU_DR); |
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tcp_disconnect(); |
tcp_disconnect(); |