trunk/rdesktop/parallel.c

#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 <linux/lp.h>
#include <errno.h>

extern int errno;

extern RDPDR_DEVICE g_rdpdr_device[];

PARALLEL_DEVICE *
get_parallel_data(HANDLE handle)
{
        int index;

        for (index = 0; index < RDPDR_MAX_DEVICES; index++)
        {
                if (handle == g_rdpdr_device[index].handle)
                        return (PARALLEL_DEVICE *) g_rdpdr_device[index].pdevice_data;
        }
        return NULL;
}


/* 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, HANDLE * 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");

        ioctl(parallel_fd, LPABORT, (int) 1);

        g_rdpdr_device[device_id].handle = parallel_fd;

        *handle = parallel_fd;

        return STATUS_SUCCESS;
}

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

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

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

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

                *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 (ioctl(handle, LPGETSTATUS, &status) == 0)
                {
                        /* coming soon: take care for the printer status */
                        printf("parallel_write: status = %d, errno = %d\n", status, errno);
                }
        }
        *result = n;
        return rc;
}

static NTSTATUS
parallel_device_control(HANDLE 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	n-ki	569	#define MAX_PARALLEL_DEVICES 1
2
3			#define FILE_DEVICE_PARALLEL 0x22
4
5			#define IOCTL_PAR_QUERY_RAW_DEVICE_ID 0x0c
6
7			#include "rdesktop.h"
8			#include <unistd.h>
9			#include <fcntl.h>
10	n-ki	631	#include <sys/ioctl.h>
11			#include <linux/lp.h>
12			#include <errno.h>
13	n-ki	569
14	n-ki	631	extern int errno;
15
16	n-ki	569	extern RDPDR_DEVICE g_rdpdr_device[];
17
18	astrand	580	PARALLEL_DEVICE *
19			get_parallel_data(HANDLE handle)
20	n-ki	569	{
21			int index;
22
23			for (index = 0; index < RDPDR_MAX_DEVICES; index++)
24			{
25			if (handle == g_rdpdr_device[index].handle)
26			return (PARALLEL_DEVICE *) g_rdpdr_device[index].pdevice_data;
27			}
28			return NULL;
29			}
30
31
32			/* Enumeration of devices from rdesktop.c */
33			/* returns numer of units found and initialized. */
34			/* optarg looks like ':LPT1=/dev/lp0' */
35			/* when it arrives to this function. */
36			int
37	astrand	608	parallel_enum_devices(uint32 * id, char *optarg)
38	n-ki	569	{
39			PARALLEL_DEVICE *ppar_info;
40
41			char *pos = optarg;
42			char *pos2;
43			int count = 0;
44
45			// skip the first colon
46			optarg++;
47			while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
48			{
49			ppar_info = (PARALLEL_DEVICE *) xmalloc(sizeof(PARALLEL_DEVICE));
50
51			pos2 = next_arg(optarg, '=');
52			strcpy(g_rdpdr_device[*id].name, optarg);
53
54	stargo	570	toupper_str(g_rdpdr_device[*id].name);
55	n-ki	569
56			g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
57			strcpy(g_rdpdr_device[*id].local_path, pos2);
58			printf("PARALLEL %s to %s\n", optarg, pos2);
59
60			// set device type
61			g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
62			g_rdpdr_device[id].pdevice_data = (void ) ppar_info;
63	n-ki	631	g_rdpdr_device[*id].handle = 0;
64	n-ki	569	count++;
65			(*id)++;
66
67			optarg = pos;
68			}
69			return count;
70			}
71
72			static NTSTATUS
73	n-ki	592	parallel_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
74			uint32 flags, char filename, HANDLE handle)
75	n-ki	569	{
76			int parallel_fd;
77
78	n-ki	589	parallel_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR);
79	n-ki	592	if (parallel_fd == -1)
80			{
81	n-ki	589	perror("open");
82	n-ki	569	return STATUS_ACCESS_DENIED;
83	n-ki	589	}
84	n-ki	569
85	n-ki	631	/* all read and writes should be non blocking */
86			if (fcntl(parallel_fd, F_SETFL, O_NONBLOCK) == -1)
87			perror("fcntl");
88
89			ioctl(parallel_fd, LPABORT, (int) 1);
90
91	n-ki	584	g_rdpdr_device[device_id].handle = parallel_fd;
92
93	n-ki	569	*handle = parallel_fd;
94	n-ki	592
95	n-ki	569	return STATUS_SUCCESS;
96			}
97
98			static NTSTATUS
99			parallel_close(HANDLE handle)
100			{
101	n-ki	631	int i = get_device_index(handle);
102			if (i >= 0)
103			g_rdpdr_device[i].handle = 0;
104	n-ki	569	close(handle);
105			return STATUS_SUCCESS;
106			}
107
108	n-ki	589	NTSTATUS
109			parallel_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
110			{
111			*result = read(handle, data, length);
112			return STATUS_SUCCESS;
113			}
114
115	n-ki	569	static NTSTATUS
116			parallel_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
117			{
118	n-ki	631	int rc = STATUS_SUCCESS;
119
120			int n = write(handle, data, length);
121			if (n < 0)
122			{
123			int status;
124
125			*result = 0;
126			switch (errno)
127			{
128			case EAGAIN:
129			rc = STATUS_DEVICE_OFF_LINE;
130			case ENOSPC:
131			rc = STATUS_DEVICE_PAPER_EMPTY;
132			case EIO:
133			rc = STATUS_DEVICE_OFF_LINE;
134			default:
135			rc = STATUS_DEVICE_POWERED_OFF;
136			}
137			if (ioctl(handle, LPGETSTATUS, &status) == 0)
138			{
139			/* coming soon: take care for the printer status */
140			printf("parallel_write: status = %d, errno = %d\n", status, errno);
141			}
142			}
143			*result = n;
144			return rc;
145	n-ki	569	}
146
147			static NTSTATUS
148			parallel_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)
149			{
150			if ((request >> 16) != FILE_DEVICE_PARALLEL)
151			return STATUS_INVALID_PARAMETER;
152
153			/* extract operation */
154			request >>= 2;
155			request &= 0xfff;
156
157			printf("PARALLEL IOCTL %d: ", request);
158
159			switch (request)
160			{
161			case IOCTL_PAR_QUERY_RAW_DEVICE_ID:
162
163			default:
164
165			printf("\n");
166			unimpl("UNKNOWN IOCTL %d\n", request);
167			}
168			return STATUS_SUCCESS;
169			}
170
171			DEVICE_FNS parallel_fns = {
172			parallel_create,
173			parallel_close,
174	n-ki	589	parallel_read,
175	n-ki	569	parallel_write,
176			parallel_device_control
177			};