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>

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)
{
        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;
                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;
        }

        g_rdpdr_device[device_id].handle = parallel_fd;

        *handle = parallel_fd;

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

        return STATUS_SUCCESS;
}

static NTSTATUS
parallel_close(HANDLE handle)
{
        g_rdpdr_device[get_device_index(handle)].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)
{
        *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,
        parallel_read,
        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	#include "rdesktop.h"
8	#include <unistd.h>
9	#include <fcntl.h>
10
11	extern RDPDR_DEVICE g_rdpdr_device[];
12
13	PARALLEL_DEVICE *
14	get_parallel_data(HANDLE handle)
15	{
16	int index;
17
18	for (index = 0; index < RDPDR_MAX_DEVICES; index++)
19	{
20	if (handle == g_rdpdr_device[index].handle)
21	return (PARALLEL_DEVICE *) g_rdpdr_device[index].pdevice_data;
22	}
23	return NULL;
24	}
25
26
27	/* Enumeration of devices from rdesktop.c */
28	/* returns numer of units found and initialized. */
29	/* optarg looks like ':LPT1=/dev/lp0' */
30	/* when it arrives to this function. */
31	int
32	parallel_enum_devices(int id, char optarg)
33	{
34	PARALLEL_DEVICE *ppar_info;
35
36	char *pos = optarg;
37	char *pos2;
38	int count = 0;
39
40	// skip the first colon
41	optarg++;
42	while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
43	{
44	ppar_info = (PARALLEL_DEVICE *) xmalloc(sizeof(PARALLEL_DEVICE));
45
46	pos2 = next_arg(optarg, '=');
47	strcpy(g_rdpdr_device[*id].name, optarg);
48
49	toupper_str(g_rdpdr_device[*id].name);
50
51	g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
52	strcpy(g_rdpdr_device[*id].local_path, pos2);
53	printf("PARALLEL %s to %s\n", optarg, pos2);
54
55	// set device type
56	g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
57	g_rdpdr_device[id].pdevice_data = (void ) ppar_info;
58	count++;
59	(*id)++;
60
61	optarg = pos;
62	}
63	return count;
64	}
65
66	static NTSTATUS
67	parallel_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
68	uint32 flags, char filename, HANDLE handle)
69	{
70	int parallel_fd;
71
72	parallel_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR);
73	if (parallel_fd == -1)
74	{
75	perror("open");
76	return STATUS_ACCESS_DENIED;
77	}
78
79	g_rdpdr_device[device_id].handle = parallel_fd;
80
81	*handle = parallel_fd;
82
83	/* all read and writes should be non blocking */
84	if (fcntl(*handle, F_SETFL, O_NONBLOCK) == -1)
85	perror("fcntl");
86
87	return STATUS_SUCCESS;
88	}
89
90	static NTSTATUS
91	parallel_close(HANDLE handle)
92	{
93	g_rdpdr_device[get_device_index(handle)].handle = 0;
94	close(handle);
95	return STATUS_SUCCESS;
96	}
97
98	NTSTATUS
99	parallel_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
100	{
101	*result = read(handle, data, length);
102	return STATUS_SUCCESS;
103	}
104
105	static NTSTATUS
106	parallel_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
107	{
108	*result = write(handle, data, length);
109	return STATUS_SUCCESS;
110	}
111
112	static NTSTATUS
113	parallel_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)
114	{
115	if ((request >> 16) != FILE_DEVICE_PARALLEL)
116	return STATUS_INVALID_PARAMETER;
117
118	/* extract operation */
119	request >>= 2;
120	request &= 0xfff;
121
122	printf("PARALLEL IOCTL %d: ", request);
123
124	switch (request)
125	{
126	case IOCTL_PAR_QUERY_RAW_DEVICE_ID:
127
128	default:
129
130	printf("\n");
131	unimpl("UNKNOWN IOCTL %d\n", request);
132	}
133	return STATUS_SUCCESS;
134	}
135
136	DEVICE_FNS parallel_fns = {
137	parallel_create,
138	parallel_close,
139	parallel_read,
140	parallel_write,
141	parallel_device_control
142	};