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#define MAX_PARALLEL_DEVICES 1 |
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|
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#define FILE_DEVICE_PARALLEL 0x22 |
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|
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#define IOCTL_PAR_QUERY_RAW_DEVICE_ID 0x0c |
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|
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#include "rdesktop.h" |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <sys/ioctl.h> |
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#include <errno.h> |
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|
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#if defined(__linux__) |
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#include <linux/lp.h> |
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#endif |
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|
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extern int errno; |
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|
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extern RDPDR_DEVICE g_rdpdr_device[]; |
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|
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static PARALLEL_DEVICE * |
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get_parallel_data(HANDLE handle) |
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{ |
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int index; |
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|
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for (index = 0; index < RDPDR_MAX_DEVICES; index++) |
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{ |
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if (handle == g_rdpdr_device[index].handle) |
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return (PARALLEL_DEVICE *) g_rdpdr_device[index].pdevice_data; |
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} |
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return NULL; |
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} |
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|
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|
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/* Enumeration of devices from rdesktop.c */ |
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/* returns numer of units found and initialized. */ |
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/* optarg looks like ':LPT1=/dev/lp0' */ |
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/* when it arrives to this function. */ |
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int |
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parallel_enum_devices(uint32 * id, char *optarg) |
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{ |
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PARALLEL_DEVICE *ppar_info; |
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|
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char *pos = optarg; |
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char *pos2; |
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int count = 0; |
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|
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// skip the first colon |
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optarg++; |
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while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES) |
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{ |
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ppar_info = (PARALLEL_DEVICE *) xmalloc(sizeof(PARALLEL_DEVICE)); |
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|
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pos2 = next_arg(optarg, '='); |
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strcpy(g_rdpdr_device[*id].name, optarg); |
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|
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toupper_str(g_rdpdr_device[*id].name); |
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|
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g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1); |
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strcpy(g_rdpdr_device[*id].local_path, pos2); |
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printf("PARALLEL %s to %s\n", optarg, pos2); |
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|
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// set device type |
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g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL; |
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g_rdpdr_device[*id].pdevice_data = (void *) ppar_info; |
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g_rdpdr_device[*id].handle = 0; |
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count++; |
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(*id)++; |
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|
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optarg = pos; |
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} |
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return count; |
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} |
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|
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static NTSTATUS |
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parallel_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition, |
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uint32 flags, char *filename, HANDLE * handle) |
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{ |
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int parallel_fd; |
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|
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parallel_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR); |
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if (parallel_fd == -1) |
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{ |
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perror("open"); |
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return STATUS_ACCESS_DENIED; |
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} |
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|
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/* all read and writes should be non blocking */ |
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if (fcntl(parallel_fd, F_SETFL, O_NONBLOCK) == -1) |
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perror("fcntl"); |
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|
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#if defined(LPABORT) |
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/* Retry on errors */ |
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ioctl(parallel_fd, LPABORT, (int) 1); |
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#endif |
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|
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g_rdpdr_device[device_id].handle = parallel_fd; |
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|
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*handle = parallel_fd; |
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|
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return STATUS_SUCCESS; |
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} |
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|
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static NTSTATUS |
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parallel_close(HANDLE handle) |
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{ |
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int i = get_device_index(handle); |
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if (i >= 0) |
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g_rdpdr_device[i].handle = 0; |
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close(handle); |
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return STATUS_SUCCESS; |
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} |
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|
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static NTSTATUS |
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parallel_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result) |
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{ |
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*result = read(handle, data, length); |
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return STATUS_SUCCESS; |
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} |
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|
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static NTSTATUS |
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parallel_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result) |
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{ |
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int rc = STATUS_SUCCESS; |
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|
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int n = write(handle, data, length); |
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if (n < 0) |
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{ |
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int status; |
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|
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*result = 0; |
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switch (errno) |
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{ |
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case EAGAIN: |
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rc = STATUS_DEVICE_OFF_LINE; |
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case ENOSPC: |
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rc = STATUS_DEVICE_PAPER_EMPTY; |
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case EIO: |
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rc = STATUS_DEVICE_OFF_LINE; |
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default: |
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rc = STATUS_DEVICE_POWERED_OFF; |
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} |
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#if defined(LPGETSTATUS) |
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if (ioctl(handle, LPGETSTATUS, &status) == 0) |
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{ |
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/* coming soon: take care for the printer status */ |
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printf("parallel_write: status = %d, errno = %d\n", status, errno); |
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} |
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#endif |
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} |
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*result = n; |
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return rc; |
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} |
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|
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static NTSTATUS |
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parallel_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out) |
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{ |
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if ((request >> 16) != FILE_DEVICE_PARALLEL) |
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return STATUS_INVALID_PARAMETER; |
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|
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/* extract operation */ |
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request >>= 2; |
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request &= 0xfff; |
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|
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printf("PARALLEL IOCTL %d: ", request); |
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|
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switch (request) |
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{ |
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case IOCTL_PAR_QUERY_RAW_DEVICE_ID: |
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|
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default: |
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|
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printf("\n"); |
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unimpl("UNKNOWN IOCTL %d\n", request); |
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} |
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return STATUS_SUCCESS; |
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} |
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|
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DEVICE_FNS parallel_fns = { |
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parallel_create, |
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parallel_close, |
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parallel_read, |
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parallel_write, |
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parallel_device_control |
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}; |
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