--- /dev/null
+/* -*- c-basic-offset: 8 -*-
+ rdesktop: A Remote Desktop Protocol client.
+ Copyright (C) Matthew Chapman 1999-2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#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
+
+/* 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(RDPCLIENT * This, 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(This->rdpdr_device[*id].name, optarg);
+
+ toupper_str(This->rdpdr_device[*id].name);
+
+ This->rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
+ strcpy(This->rdpdr_device[*id].local_path, pos2);
+ printf("PARALLEL %s to %s\n", optarg, pos2);
+
+ /* set device type */
+ This->rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
+ This->rdpdr_device[*id].pdevice_data = (void *) ppar_info;
+ This->rdpdr_device[*id].handle = 0;
+ count++;
+ (*id)++;
+
+ optarg = pos;
+ }
+ return count;
+}
+
+static NTSTATUS
+parallel_create(RDPCLIENT * This, uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
+ uint32 flags, char *filename, NTHANDLE * handle)
+{
+ int parallel_fd;
+
+ parallel_fd = open(This->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
+
+ This->rdpdr_device[device_id].handle = parallel_fd;
+
+ *handle = parallel_fd;
+
+ return STATUS_SUCCESS;
+}
+
+static NTSTATUS
+parallel_close(RDPCLIENT * This, NTHANDLE handle)
+{
+ int i = get_device_index(This, handle);
+ if (i >= 0)
+ This->rdpdr_device[i].handle = 0;
+ close(handle);
+ return STATUS_SUCCESS;
+}
+
+static NTSTATUS
+parallel_read(RDPCLIENT * This, NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
+{
+ *result = read(handle, data, length);
+ return STATUS_SUCCESS;
+}
+
+static NTSTATUS
+parallel_write(RDPCLIENT * This, 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(RDPCLIENT * This, 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
+};