trunk/rdesktop/parallel.c

#define MAX_PARALLEL_DEVICES            1

#define FILE_DEVICE_PARALLEL            0x22

#define IOCTL_PAR_QUERY_RAW_DEVICE_ID   0x0c

#define PARALLELDEV0                    "/dev/lp0"

#include "rdesktop.h"
#include <unistd.h>
#include <fcntl.h>

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(int *id, char *optarg)
{
        //TODO: Read from configuration file? CUPS?
        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(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;
                count++;
                (*id)++;

                optarg = pos;
        }
        return count;
}

static NTSTATUS
parallel_create(uint32 device_id, HANDLE * handle)
{
        int parallel_fd;

        parallel_fd = open(PARALLELDEV0, O_WRONLY);
        if (parallel_fd == -1)
                return STATUS_ACCESS_DENIED;

        *handle = parallel_fd;
        return STATUS_SUCCESS;
}

static NTSTATUS
parallel_close(HANDLE handle)
{
        close(handle);
        return STATUS_SUCCESS;
}

static NTSTATUS
parallel_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        *result = write(handle, data, length);
        return STATUS_SUCCESS;
}

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,
        NULL,
        parallel_write,
        parallel_device_control
};
1	#define MAX_PARALLEL_DEVICES 1
2
3	#define FILE_DEVICE_PARALLEL 0x22
4
5	#define IOCTL_PAR_QUERY_RAW_DEVICE_ID 0x0c
6
7	#define PARALLELDEV0 "/dev/lp0"
8
9	#include "rdesktop.h"
10	#include <unistd.h>
11	#include <fcntl.h>
12
13	extern RDPDR_DEVICE g_rdpdr_device[];
14
15	PARALLEL_DEVICE * get_parallel_data(HANDLE handle)
16	{
17	int index;
18
19	for (index = 0; index < RDPDR_MAX_DEVICES; index++)
20	{
21	if (handle == g_rdpdr_device[index].handle)
22	return (PARALLEL_DEVICE *) g_rdpdr_device[index].pdevice_data;
23	}
24	return NULL;
25	}
26
27
28	/* Enumeration of devices from rdesktop.c */
29	/* returns numer of units found and initialized. */
30	/* optarg looks like ':LPT1=/dev/lp0' */
31	/* when it arrives to this function. */
32	int
33	parallel_enum_devices(int id, char optarg)
34	{
35	//TODO: Read from configuration file? CUPS?
36	PARALLEL_DEVICE *ppar_info;
37
38	char *pos = optarg;
39	char *pos2;
40	int count = 0;
41
42	// skip the first colon
43	optarg++;
44	while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
45	{
46	ppar_info = (PARALLEL_DEVICE *) xmalloc(sizeof(PARALLEL_DEVICE));
47
48	pos2 = next_arg(optarg, '=');
49	strcpy(g_rdpdr_device[*id].name, optarg);
50
51	toupper(g_rdpdr_device[*id].name);
52
53	g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
54	strcpy(g_rdpdr_device[*id].local_path, pos2);
55	printf("PARALLEL %s to %s\n", optarg, pos2);
56
57	// set device type
58	g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
59	g_rdpdr_device[id].pdevice_data = (void ) ppar_info;
60	count++;
61	(*id)++;
62
63	optarg = pos;
64	}
65	return count;
66	}
67
68	static NTSTATUS
69	parallel_create(uint32 device_id, HANDLE * handle)
70	{
71	int parallel_fd;
72
73	parallel_fd = open(PARALLELDEV0, O_WRONLY);
74	if (parallel_fd == -1)
75	return STATUS_ACCESS_DENIED;
76
77	*handle = parallel_fd;
78	return STATUS_SUCCESS;
79	}
80
81	static NTSTATUS
82	parallel_close(HANDLE handle)
83	{
84	close(handle);
85	return STATUS_SUCCESS;
86	}
87
88	static NTSTATUS
89	parallel_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
90	{
91	*result = write(handle, data, length);
92	return STATUS_SUCCESS;
93	}
94
95	static NTSTATUS
96	parallel_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)
97	{
98	if ((request >> 16) != FILE_DEVICE_PARALLEL)
99	return STATUS_INVALID_PARAMETER;
100
101	/* extract operation */
102	request >>= 2;
103	request &= 0xfff;
104
105	printf("PARALLEL IOCTL %d: ", request);
106
107	switch (request)
108	{
109	case IOCTL_PAR_QUERY_RAW_DEVICE_ID:
110
111	default:
112
113	printf("\n");
114	unimpl("UNKNOWN IOCTL %d\n", request);
115	}
116	return STATUS_SUCCESS;
117	}
118
119	DEVICE_FNS parallel_fns = {
120	parallel_create,
121	parallel_close,
122	NULL,
123	parallel_write,
124	parallel_device_control
125	};