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