summaryrefslogtreecommitdiffhomepage
path: root/src/daemon/ptyc_daemon_loop.c
blob: 5df71e90363dd254ab208fe7e26a7e1f9f94264f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
/*********************************************************/
/*  ptycon: a pty-console bridge                         */
/*  Copyright (C) 2016  Z. Gilboa                        */
/*  Released under GPLv2 and GPLv3; see COPYING.PTYCON.  */
/*********************************************************/

#include <psxtypes/psxtypes.h>
#include <ntapi/ntapi.h>

#include <ptycon/ptycon.h>
#include "ptycon_daemon_impl.h"
#include "ptycon_driver_impl.h"

#define PTYC_VTBL_ELEMENTS   PTYC_DAEMON_OPCODE_CAP - PTYC_DAEMON_OPCODE_BASE

static ptyc_daemon_routine * ptyc_daemon_vtbl[PTYC_VTBL_ELEMENTS] = {
	ptyc_daemon_connect,
	0,
	ptyc_daemon_signal,
	0,
	0,
	0
};

int32_t __stdcall ptyc_daemon_loop(void * ctx)
{
	struct ptyc_daemon_ctx *	dctx;
	nt_rtdata *			rtdata;

	nt_tty_port_msg			inbuf;
	nt_tty_port_msg			outbuf;

	nt_tty_port_msg *		request;
	nt_tty_port_msg *		reply;

	intptr_t			port_id;
	int32_t				opcode;

	if (ntapi->tt_get_runtime_data(&rtdata,0))
		return NT_STATUS_INTERNAL_ERROR;

	dctx = (struct ptyc_daemon_ctx *)ctx;

	/* init */
	request = &inbuf;
	ntapi->tt_aligned_block_memset(
		request,0,sizeof(*request));

	/* get first message */
	ntapi->zw_reply_wait_receive_port(
		dctx->hport_daemon,
		&port_id,
		0,(nt_port_message *)request);

	/* message loop */
	do {
		switch (request->header.msg_type) {
			case NT_LPC_REQUEST:
			case NT_LPC_DATAGRAM:
				opcode = request->ttyinfo.opcode;
				break;

			case NT_LPC_CONNECTION_REQUEST:
				opcode = PTYC_DAEMON_CONNECT;
				break;

			default:
				opcode = -1;
				break;
		}

		/* dispatch */
		reply = &outbuf;

		ntapi->tt_aligned_block_memcpy(
			(uintptr_t *)reply,
			(uintptr_t *)request,
			sizeof(*reply));

		reply->header.msg_type = NT_LPC_REPLY;

		if ((opcode >= PTYC_DAEMON_OPCODE_BASE) && (opcode < PTYC_DAEMON_OPCODE_CAP)) {
			reply->ttyinfo.reserved = (void *)request->header.client_id.process_id;
			opcode -= PTYC_DAEMON_OPCODE_BASE;

			if (ptyc_daemon_vtbl[opcode])
				reply->ttyinfo.status = ptyc_daemon_vtbl[opcode](reply);
			else
				reply->ttyinfo.status = NT_STATUS_NOT_IMPLEMENTED;
		} else {
			reply->ttyinfo.reserved = NT_INVALID_HANDLE_VALUE;
			reply->ttyinfo.status   = NT_STATUS_LPC_INVALID_CONNECTION_USAGE;
		}

		ntapi->tt_aligned_block_memset(
			request,0,sizeof(*request));

		reply = reply->ttyinfo.reserved
			? &outbuf : 0;

		if (!reply)
			ntapi->zw_reply_wait_receive_port(
				dctx->hport_daemon,
				&port_id,
				0,&request->header);
		else if (reply->header.client_id.process_id == rtdata->cid_self.process_id)
			ntapi->zw_reply_wait_receive_port(
				dctx->hport_daemon,
				&port_id,
				&reply->header,
				&request->header);
		else {
			ntapi->zw_reply_port(
				dctx->hport_daemon,
				&reply->header);

			ntapi->zw_reply_wait_receive_port(
				dctx->hport_daemon,
				&port_id,
				0,&request->header);
		}
	} while (request->header.msg_id);

	return NT_STATUS_INTERNAL_ERROR;
}