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	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 <errno.h>
12	n-ki	569
13	stargo	632	#if defined(__linux__)
14			#include <linux/lp.h>
15			#endif
16
17	n-ki	631	extern int errno;
18
19	n-ki	569	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	astrand	608	parallel_enum_devices(uint32 * id, char *optarg)
28	n-ki	569	{
29			PARALLEL_DEVICE *ppar_info;
30
31			char *pos = optarg;
32			char *pos2;
33			int count = 0;
34
35	stargo	865	/* skip the first colon */
36	n-ki	569	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	stargo	570	toupper_str(g_rdpdr_device[*id].name);
45	n-ki	569
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	stargo	865	/* set device type */
51	n-ki	569	g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
52			g_rdpdr_device[id].pdevice_data = (void ) ppar_info;
53	n-ki	631	g_rdpdr_device[*id].handle = 0;
54	n-ki	569	count++;
55			(*id)++;
56
57			optarg = pos;
58			}
59			return count;
60			}
61
62			static NTSTATUS
63	n-ki	592	parallel_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
64	jsorg71	776	uint32 flags, char filename, NTHANDLE handle)
65	n-ki	569	{
66			int parallel_fd;
67
68	n-ki	589	parallel_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR);
69	n-ki	592	if (parallel_fd == -1)
70			{
71	n-ki	589	perror("open");
72	n-ki	569	return STATUS_ACCESS_DENIED;
73	n-ki	589	}
74	n-ki	569
75	n-ki	631	/* all read and writes should be non blocking */
76			if (fcntl(parallel_fd, F_SETFL, O_NONBLOCK) == -1)
77			perror("fcntl");
78
79	stargo	632	#if defined(LPABORT)
80			/* Retry on errors */
81	n-ki	631	ioctl(parallel_fd, LPABORT, (int) 1);
82	stargo	632	#endif
83	n-ki	631
84	n-ki	584	g_rdpdr_device[device_id].handle = parallel_fd;
85
86	n-ki	569	*handle = parallel_fd;
87	n-ki	592
88	n-ki	569	return STATUS_SUCCESS;
89			}
90
91			static NTSTATUS
92	jsorg71	776	parallel_close(NTHANDLE handle)
93	n-ki	569	{
94	n-ki	631	int i = get_device_index(handle);
95			if (i >= 0)
96			g_rdpdr_device[i].handle = 0;
97	n-ki	569	close(handle);
98			return STATUS_SUCCESS;
99			}
100
101	astrand	664	static NTSTATUS
102	jsorg71	776	parallel_read(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
103	n-ki	589	{
104			*result = read(handle, data, length);
105			return STATUS_SUCCESS;
106			}
107
108	n-ki	569	static NTSTATUS
109	jsorg71	776	parallel_write(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
110	n-ki	569	{
111	n-ki	631	int rc = STATUS_SUCCESS;
112
113			int n = write(handle, data, length);
114			if (n < 0)
115			{
116	stargo	832	#if defined(LPGETSTATUS)
117	n-ki	631	int status;
118	stargo	832	#endif
119	n-ki	631
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	stargo	632	#if defined(LPGETSTATUS)
133	n-ki	631	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	stargo	632	#endif
139	n-ki	631	}
140			*result = n;
141			return rc;
142	n-ki	569	}
143
144			static NTSTATUS
145	jsorg71	776	parallel_device_control(NTHANDLE handle, uint32 request, STREAM in, STREAM out)
146	n-ki	569	{
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	n-ki	589	parallel_read,
172	n-ki	569	parallel_write,
173			parallel_device_control
174			};