trunk/rdesktop/parallel.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Copyright (C) Matthew Chapman 1999-2005
   
   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.
*/
#define MAX_PARALLEL_DEVICES            1

#define FILE_DEVICE_PARALLEL            0x22

#define IOCTL_PAR_QUERY_RAW_DEVICE_ID   0x0c

#include "rdesktop.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>

#if defined(__linux__)
#include <linux/lp.h>
#endif

extern int errno;

extern RDPDR_DEVICE g_rdpdr_device[];


/* Enumeration of devices from rdesktop.c        */
/* returns numer of units found and initialized. */
/* optarg looks like ':LPT1=/dev/lp0'            */
/* when it arrives to this function.             */
int
parallel_enum_devices(uint32 * id, char *optarg)
{
        PARALLEL_DEVICE *ppar_info;

        char *pos = optarg;
        char *pos2;
        int count = 0;

        /* skip the first colon */
        optarg++;
        while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
        {
                ppar_info = (PARALLEL_DEVICE *) xmalloc(sizeof(PARALLEL_DEVICE));

                pos2 = next_arg(optarg, '=');
                strcpy(g_rdpdr_device[*id].name, optarg);

                toupper_str(g_rdpdr_device[*id].name);

                g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
                strcpy(g_rdpdr_device[*id].local_path, pos2);
                printf("PARALLEL %s to %s\n", optarg, pos2);

                /* set device type */
                g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
                g_rdpdr_device[*id].pdevice_data = (void *) ppar_info;
                g_rdpdr_device[*id].handle = 0;
                count++;
                (*id)++;

                optarg = pos;
        }
        return count;
}

static NTSTATUS
parallel_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
                uint32 flags, char *filename, NTHANDLE * handle)
{
        int parallel_fd;

        parallel_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR);
        if (parallel_fd == -1)
        {
                perror("open");
                return STATUS_ACCESS_DENIED;
        }

        /* all read and writes should be non blocking */
        if (fcntl(parallel_fd, F_SETFL, O_NONBLOCK) == -1)
                perror("fcntl");

#if defined(LPABORT)
        /* Retry on errors */
        ioctl(parallel_fd, LPABORT, (int) 1);
#endif

        g_rdpdr_device[device_id].handle = parallel_fd;

        *handle = parallel_fd;

        return STATUS_SUCCESS;
}

static NTSTATUS
parallel_close(NTHANDLE handle)
{
        int i = get_device_index(handle);
        if (i >= 0)
                g_rdpdr_device[i].handle = 0;
        close(handle);
        return STATUS_SUCCESS;
}

static NTSTATUS
parallel_read(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        *result = read(handle, data, length);
        return STATUS_SUCCESS;
}

static NTSTATUS
parallel_write(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        int rc = STATUS_SUCCESS;

        int n = write(handle, data, length);
        if (n < 0)
        {
#if defined(LPGETSTATUS)
                int status;
#endif

                *result = 0;
                switch (errno)
                {
                        case EAGAIN:
                                rc = STATUS_DEVICE_OFF_LINE;
                        case ENOSPC:
                                rc = STATUS_DEVICE_PAPER_EMPTY;
                        case EIO:
                                rc = STATUS_DEVICE_OFF_LINE;
                        default:
                                rc = STATUS_DEVICE_POWERED_OFF;
                }
#if defined(LPGETSTATUS)
                if (ioctl(handle, LPGETSTATUS, &status) == 0)
                {
                        /* coming soon: take care for the printer status */
                        printf("parallel_write: status = %d, errno = %d\n", status, errno);
                }
#endif
        }
        *result = n;
        return rc;
}

static NTSTATUS
parallel_device_control(NTHANDLE handle, uint32 request, STREAM in, STREAM out)
{
        if ((request >> 16) != FILE_DEVICE_PARALLEL)
                return STATUS_INVALID_PARAMETER;

        /* extract operation */
        request >>= 2;
        request &= 0xfff;

        printf("PARALLEL IOCTL %d: ", request);

        switch (request)
        {
                case IOCTL_PAR_QUERY_RAW_DEVICE_ID:

                default:

                        printf("\n");
                        unimpl("UNKNOWN IOCTL %d\n", request);
        }
        return STATUS_SUCCESS;
}

DEVICE_FNS parallel_fns = {
        parallel_create,
        parallel_close,
        parallel_read,
        parallel_write,
        parallel_device_control
};
1	astrand	963	/* -- c-basic-offset: 8 --
2			rdesktop: A Remote Desktop Protocol client.
3			Copyright (C) Matthew Chapman 1999-2005
4
5			This program is free software; you can redistribute it and/or modify
6			it under the terms of the GNU General Public License as published by
7			the Free Software Foundation; either version 2 of the License, or
8			(at your option) any later version.
9
10			This program is distributed in the hope that it will be useful,
11			but WITHOUT ANY WARRANTY; without even the implied warranty of
12			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			GNU General Public License for more details.
14
15			You should have received a copy of the GNU General Public License
16			along with this program; if not, write to the Free Software
17			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18			*/
19	n-ki	569	#define MAX_PARALLEL_DEVICES 1
20
21			#define FILE_DEVICE_PARALLEL 0x22
22
23			#define IOCTL_PAR_QUERY_RAW_DEVICE_ID 0x0c
24
25			#include "rdesktop.h"
26			#include <unistd.h>
27			#include <fcntl.h>
28	n-ki	631	#include <sys/ioctl.h>
29			#include <errno.h>
30	n-ki	569
31	stargo	632	#if defined(__linux__)
32			#include <linux/lp.h>
33			#endif
34
35	n-ki	631	extern int errno;
36
37	n-ki	569	extern RDPDR_DEVICE g_rdpdr_device[];
38
39
40			/* Enumeration of devices from rdesktop.c */
41			/* returns numer of units found and initialized. */
42			/* optarg looks like ':LPT1=/dev/lp0' */
43			/* when it arrives to this function. */
44			int
45	astrand	608	parallel_enum_devices(uint32 * id, char *optarg)
46	n-ki	569	{
47			PARALLEL_DEVICE *ppar_info;
48
49			char *pos = optarg;
50			char *pos2;
51			int count = 0;
52
53	stargo	865	/* skip the first colon */
54	n-ki	569	optarg++;
55			while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
56			{
57			ppar_info = (PARALLEL_DEVICE *) xmalloc(sizeof(PARALLEL_DEVICE));
58
59			pos2 = next_arg(optarg, '=');
60			strcpy(g_rdpdr_device[*id].name, optarg);
61
62	stargo	570	toupper_str(g_rdpdr_device[*id].name);
63	n-ki	569
64			g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
65			strcpy(g_rdpdr_device[*id].local_path, pos2);
66			printf("PARALLEL %s to %s\n", optarg, pos2);
67
68	stargo	865	/* set device type */
69	n-ki	569	g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
70			g_rdpdr_device[id].pdevice_data = (void ) ppar_info;
71	n-ki	631	g_rdpdr_device[*id].handle = 0;
72	n-ki	569	count++;
73			(*id)++;
74
75			optarg = pos;
76			}
77			return count;
78			}
79
80			static NTSTATUS
81	n-ki	592	parallel_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
82	jsorg71	776	uint32 flags, char filename, NTHANDLE handle)
83	n-ki	569	{
84			int parallel_fd;
85
86	n-ki	589	parallel_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR);
87	n-ki	592	if (parallel_fd == -1)
88			{
89	n-ki	589	perror("open");
90	n-ki	569	return STATUS_ACCESS_DENIED;
91	n-ki	589	}
92	n-ki	569
93	n-ki	631	/* all read and writes should be non blocking */
94			if (fcntl(parallel_fd, F_SETFL, O_NONBLOCK) == -1)
95			perror("fcntl");
96
97	stargo	632	#if defined(LPABORT)
98			/* Retry on errors */
99	n-ki	631	ioctl(parallel_fd, LPABORT, (int) 1);
100	stargo	632	#endif
101	n-ki	631
102	n-ki	584	g_rdpdr_device[device_id].handle = parallel_fd;
103
104	n-ki	569	*handle = parallel_fd;
105	n-ki	592
106	n-ki	569	return STATUS_SUCCESS;
107			}
108
109			static NTSTATUS
110	jsorg71	776	parallel_close(NTHANDLE handle)
111	n-ki	569	{
112	n-ki	631	int i = get_device_index(handle);
113			if (i >= 0)
114			g_rdpdr_device[i].handle = 0;
115	n-ki	569	close(handle);
116			return STATUS_SUCCESS;
117			}
118
119	astrand	664	static NTSTATUS
120	jsorg71	776	parallel_read(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
121	n-ki	589	{
122			*result = read(handle, data, length);
123			return STATUS_SUCCESS;
124			}
125
126	n-ki	569	static NTSTATUS
127	jsorg71	776	parallel_write(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
128	n-ki	569	{
129	n-ki	631	int rc = STATUS_SUCCESS;
130
131			int n = write(handle, data, length);
132			if (n < 0)
133			{
134	stargo	832	#if defined(LPGETSTATUS)
135	n-ki	631	int status;
136	stargo	832	#endif
137	n-ki	631
138			*result = 0;
139			switch (errno)
140			{
141			case EAGAIN:
142			rc = STATUS_DEVICE_OFF_LINE;
143			case ENOSPC:
144			rc = STATUS_DEVICE_PAPER_EMPTY;
145			case EIO:
146			rc = STATUS_DEVICE_OFF_LINE;
147			default:
148			rc = STATUS_DEVICE_POWERED_OFF;
149			}
150	stargo	632	#if defined(LPGETSTATUS)
151	n-ki	631	if (ioctl(handle, LPGETSTATUS, &status) == 0)
152			{
153			/* coming soon: take care for the printer status */
154			printf("parallel_write: status = %d, errno = %d\n", status, errno);
155			}
156	stargo	632	#endif
157	n-ki	631	}
158			*result = n;
159			return rc;
160	n-ki	569	}
161
162			static NTSTATUS
163	jsorg71	776	parallel_device_control(NTHANDLE handle, uint32 request, STREAM in, STREAM out)
164	n-ki	569	{
165			if ((request >> 16) != FILE_DEVICE_PARALLEL)
166			return STATUS_INVALID_PARAMETER;
167
168			/* extract operation */
169			request >>= 2;
170			request &= 0xfff;
171
172			printf("PARALLEL IOCTL %d: ", request);
173
174			switch (request)
175			{
176			case IOCTL_PAR_QUERY_RAW_DEVICE_ID:
177
178			default:
179
180			printf("\n");
181			unimpl("UNKNOWN IOCTL %d\n", request);
182			}
183			return STATUS_SUCCESS;
184			}
185
186			DEVICE_FNS parallel_fns = {
187			parallel_create,
188			parallel_close,
189	n-ki	589	parallel_read,
190	n-ki	569	parallel_write,
191			parallel_device_control
192			};