/[rdesktop]/sourceforge.net/trunk/rdesktop/parallel.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 569 by n-ki, Wed Jan 21 14:40:40 2004 UTC revision 985 by astrand, Tue Aug 23 20:27:14 2005 UTC
# Line 1  Line 1 
1    /* -*- c-basic-offset: 8 -*-
2       rdesktop: A Remote Desktop Protocol client.
3       Copyright (C) Matthew Chapman 1999-2005
4      
5       This program is free software; you can redistribute it and/or modify
6       it under the terms of the GNU General Public License as published by
7       the Free Software Foundation; either version 2 of the License, or
8       (at your option) any later version.
9    
10       This program is distributed in the hope that it will be useful,
11       but WITHOUT ANY WARRANTY; without even the implied warranty of
12       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13       GNU General Public License for more details.
14      
15       You should have received a copy of the GNU General Public License
16       along with this program; if not, write to the Free Software
17       Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18    */
19  #define MAX_PARALLEL_DEVICES            1  #define MAX_PARALLEL_DEVICES            1
20    
21  #define FILE_DEVICE_PARALLEL            0x22  #define FILE_DEVICE_PARALLEL            0x22
22    
23  #define IOCTL_PAR_QUERY_RAW_DEVICE_ID   0x0c  #define IOCTL_PAR_QUERY_RAW_DEVICE_ID   0x0c
24    
 #define PARALLELDEV0                    "/dev/lp0"  
   
25  #include "rdesktop.h"  #include "rdesktop.h"
26  #include <unistd.h>  #include <unistd.h>
27  #include <fcntl.h>  #include <fcntl.h>
28    #include <sys/ioctl.h>
29    #include <errno.h>
30    
31  extern RDPDR_DEVICE g_rdpdr_device[];  #if defined(__linux__)
32    #include <linux/lp.h>
33    #endif
34    
35  PARALLEL_DEVICE * get_parallel_data(HANDLE handle)  extern RDPDR_DEVICE g_rdpdr_device[];
 {  
         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;  
 }  
36    
37    
38  /* Enumeration of devices from rdesktop.c        */  /* Enumeration of devices from rdesktop.c        */
# Line 30  PARALLEL_DEVICE * get_parallel_data(HAND Line 40  PARALLEL_DEVICE * get_parallel_data(HAND
40  /* optarg looks like ':LPT1=/dev/lp0'            */  /* optarg looks like ':LPT1=/dev/lp0'            */
41  /* when it arrives to this function.             */  /* when it arrives to this function.             */
42  int  int
43  parallel_enum_devices(int *id, char *optarg)  parallel_enum_devices(uint32 * id, char *optarg)
44  {  {
         //TODO: Read from configuration file? CUPS?  
45          PARALLEL_DEVICE *ppar_info;          PARALLEL_DEVICE *ppar_info;
46    
47          char *pos = optarg;          char *pos = optarg;
48          char *pos2;          char *pos2;
49          int count = 0;          int count = 0;
50    
51          // skip the first colon          /* skip the first colon */
52          optarg++;          optarg++;
53          while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)          while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
54          {          {
# Line 48  parallel_enum_devices(int *id, char *opt Line 57  parallel_enum_devices(int *id, char *opt
57                  pos2 = next_arg(optarg, '=');                  pos2 = next_arg(optarg, '=');
58                  strcpy(g_rdpdr_device[*id].name, optarg);                  strcpy(g_rdpdr_device[*id].name, optarg);
59    
60                  toupper(g_rdpdr_device[*id].name);                  toupper_str(g_rdpdr_device[*id].name);
61    
62                  g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);                  g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
63                  strcpy(g_rdpdr_device[*id].local_path, pos2);                  strcpy(g_rdpdr_device[*id].local_path, pos2);
64                  printf("PARALLEL %s to %s\n", optarg, pos2);                  printf("PARALLEL %s to %s\n", optarg, pos2);
65    
66                  // set device type                  /* set device type */
67                  g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;                  g_rdpdr_device[*id].device_type = DEVICE_TYPE_PARALLEL;
68                  g_rdpdr_device[*id].pdevice_data = (void *) ppar_info;                  g_rdpdr_device[*id].pdevice_data = (void *) ppar_info;
69                    g_rdpdr_device[*id].handle = 0;
70                  count++;                  count++;
71                  (*id)++;                  (*id)++;
72    
# Line 66  parallel_enum_devices(int *id, char *opt Line 76  parallel_enum_devices(int *id, char *opt
76  }  }
77    
78  static NTSTATUS  static NTSTATUS
79  parallel_create(uint32 device_id, HANDLE * handle)  parallel_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
80                    uint32 flags, char *filename, NTHANDLE * handle)
81  {  {
82          int parallel_fd;          int parallel_fd;
83    
84          parallel_fd = open(PARALLELDEV0, O_WRONLY);          parallel_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR);
85          if (parallel_fd == -1)          if (parallel_fd == -1)
86            {
87                    perror("open");
88                  return STATUS_ACCESS_DENIED;                  return STATUS_ACCESS_DENIED;
89            }
90    
91            /* all read and writes should be non blocking */
92            if (fcntl(parallel_fd, F_SETFL, O_NONBLOCK) == -1)
93                    perror("fcntl");
94    
95    #if defined(LPABORT)
96            /* Retry on errors */
97            ioctl(parallel_fd, LPABORT, (int) 1);
98    #endif
99    
100            g_rdpdr_device[device_id].handle = parallel_fd;
101    
102          *handle = parallel_fd;          *handle = parallel_fd;
103    
104          return STATUS_SUCCESS;          return STATUS_SUCCESS;
105  }  }
106    
107  static NTSTATUS  static NTSTATUS
108  parallel_close(HANDLE handle)  parallel_close(NTHANDLE handle)
109  {  {
110            int i = get_device_index(handle);
111            if (i >= 0)
112                    g_rdpdr_device[i].handle = 0;
113          close(handle);          close(handle);
114          return STATUS_SUCCESS;          return STATUS_SUCCESS;
115  }  }
116    
117  static NTSTATUS  static NTSTATUS
118  parallel_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)  parallel_read(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
119  {  {
120          *result = write(handle, data, length);          *result = read(handle, data, length);
121          return STATUS_SUCCESS;          return STATUS_SUCCESS;
122  }  }
123    
124  static NTSTATUS  static NTSTATUS
125  parallel_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)  parallel_write(NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
126    {
127            int rc = STATUS_SUCCESS;
128    
129            int n = write(handle, data, length);
130            if (n < 0)
131            {
132    #if defined(LPGETSTATUS)
133                    int status;
134    #endif
135    
136                    *result = 0;
137                    switch (errno)
138                    {
139                            case EAGAIN:
140                                    rc = STATUS_DEVICE_OFF_LINE;
141                            case ENOSPC:
142                                    rc = STATUS_DEVICE_PAPER_EMPTY;
143                            case EIO:
144                                    rc = STATUS_DEVICE_OFF_LINE;
145                            default:
146                                    rc = STATUS_DEVICE_POWERED_OFF;
147                    }
148    #if defined(LPGETSTATUS)
149                    if (ioctl(handle, LPGETSTATUS, &status) == 0)
150                    {
151                            /* coming soon: take care for the printer status */
152                            printf("parallel_write: status = %d, errno = %d\n", status, errno);
153                    }
154    #endif
155            }
156            *result = n;
157            return rc;
158    }
159    
160    static NTSTATUS
161    parallel_device_control(NTHANDLE handle, uint32 request, STREAM in, STREAM out)
162  {  {
163          if ((request >> 16) != FILE_DEVICE_PARALLEL)          if ((request >> 16) != FILE_DEVICE_PARALLEL)
164                  return STATUS_INVALID_PARAMETER;                  return STATUS_INVALID_PARAMETER;
# Line 119  parallel_device_control(HANDLE handle, u Line 184  parallel_device_control(HANDLE handle, u
184  DEVICE_FNS parallel_fns = {  DEVICE_FNS parallel_fns = {
185          parallel_create,          parallel_create,
186          parallel_close,          parallel_close,
187          NULL,          parallel_read,
188          parallel_write,          parallel_write,
189          parallel_device_control          parallel_device_control
190  };  };
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