usr.bin/sasc/sasc.c

   1 /*
   2  * sasc(1) - utility for the `asc' scanner device driver
   3  *
   4  * Copyright (c) 1995 Gunther Schadow.  All rights reserved.
   5  * Copyright (c) 2004 Liam J. Foy. All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Gunther Schadow.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/usr.bin/sasc/sasc.c,v 1.7.2.1 2000/06/30 09:47:52 ps Exp $
  33  * $DragonFly: src/usr.bin/sasc/sasc.c,v 1.6 2007/01/21 10:40:39 swildner Exp $
  34  *
  35  */
  36
  37 #include <sys/file.h>
  38 #include <sys/ioctl.h>
  39 #include <sys/types.h>
  40
  41 #include <machine/asc_ioctl.h>
  42 #include <machine/limits.h>
  43
  44 #include <err.h>
  45 #include <errno.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <unistd.h>
  49
  50 #define DEFAULT_FILE "/dev/asc0"
  51
  52 static int      getnum(const char *);
  53 static int      asc_get(int, u_long);
  54 static void     asc_set(int, u_long, int, const char *);
  55 static void     usage(void);
  56
  57 static void
  58 usage(void)
  59 {
  60         fprintf(stderr,
  61                 "usage: sasc [-sq] [-f file] [-r dpi] [-w width] [-h height]"
  62                 "[-b len] [-t time]\n");
  63         exit(1);
  64 }
  65
  66 /* Check given numerical arguments */
  67 static int
  68 getnum(const char *str)
  69 {
  70         long val;
  71         char *ep;
  72
  73         errno = 0;
  74         val = strtol(str, &ep, 10);
  75         if (errno)
  76                 err(1, "strtol failed: %s", str);
  77
  78         if (str == ep || *ep != '\0')
  79                 errx(1, "invalid value: %s", str);
  80
  81         if (val > INT_MAX || val < INT_MIN) {
  82                 errno = ERANGE;
  83                 errc(1, errno, "getnum failed:");
  84         }
  85
  86         return((int)val);
  87 }
  88
  89 static void
  90 asc_set(int fd, u_long asc_setting, int asc_value, const char *asc_type)
  91 {
  92         if (ioctl(fd, asc_setting, &asc_value) < 0)
  93                 err(1, "ioctl failed setting %s(%d)", asc_type, asc_value);
  94
  95         printf("Successfully set\n");
  96 }
  97
  98 static int
  99 asc_get(int fd, u_long asc_setting)
 100 {
 101         int asc_value;
 102
 103         if (ioctl(fd, asc_setting, &asc_value) < 0)
 104                 err(1, "ioctl failed");
 105
 106         return(asc_value);
 107 }
 108
 109 int
 110 main(int argc, char **argv)
 111 {
 112         const char *file = DEFAULT_FILE;
 113         int c, fd;
 114         int show_dpi, show_width, show_height;
 115         int show_blen, show_btime, show_all;
 116         int set_blen, set_dpi, set_width;
 117         int set_height, set_btime, set_switch;
 118
 119         show_dpi = show_width = show_height = 0;
 120         show_blen = show_btime = show_all = 0;
 121
 122         set_blen = set_dpi = set_width = 0;
 123         set_height = set_btime = set_switch = 0;
 124
 125         while ((c = getopt(argc, argv, "sqf:b:r:w:h:t:")) != -1) {
 126                 switch (c) {
 127                 case 'f':
 128                         file = optarg;
 129                         break;
 130                 case 'r':
 131                         set_dpi = getnum(optarg);
 132                         break;
 133                 case 'w':
 134                         set_width = getnum(optarg);
 135                         break;
 136                 case 'h':
 137                         set_height = getnum(optarg);
 138                         break;
 139                 case 'b':
 140                         set_blen = getnum(optarg);
 141                         break;
 142                 case 't':
 143                         set_btime = getnum(optarg);
 144                         break;
 145                 case 's':
 146                         set_switch = 1;
 147                         break;
 148                 case 'q':
 149                         show_all = 1;
 150                         break;
 151                 default:
 152                         usage();
 153                 }
 154         }
 155
 156         if (argc == 1)
 157                 show_all = 1;
 158
 159         if ((fd = open(file, O_RDWR)) == -1)
 160                 err(1, "Unable to open: %s", file);
 161
 162         if (set_switch) {
 163                 if (ioctl(fd, ASC_SRESSW) < 0)
 164                         err(1, "ioctl: ASC_SRESSW failed");
 165         }
 166
 167         if (set_dpi)
 168                 asc_set(fd, ASC_SRES, set_dpi, "ASC_SRES");
 169
 170         if (set_width)
 171                 asc_set(fd, ASC_SWIDTH, set_width, "ASC_SWIDTH");
 172
 173         if (set_height)
 174                 asc_set(fd, ASC_SHEIGHT, set_height, "ASC_SHEIGHT");
 175
 176         if (set_blen)
 177                 asc_set(fd, ASC_SBLEN, set_blen, "ASC_SBLEN");
 178
 179         if (set_btime)
 180                 asc_set(fd, ASC_SBTIME, set_btime, "ASC_SBTIME");
 181
 182         if (show_all) {
 183                 show_dpi = asc_get(fd, ASC_GRES);
 184                 show_width = asc_get(fd, ASC_GWIDTH);
 185                 show_height = asc_get(fd, ASC_GHEIGHT);
 186                 show_blen = asc_get(fd, ASC_GBLEN);
 187                 show_btime = asc_get(fd, ASC_GBTIME);
 188
 189                 printf("Device: %s\n", file);
 190                 printf("Resolution: %d dpi\n", show_dpi);
 191                 printf("Width: %d\n", show_width);
 192                 printf("Height: %d\n", show_height);
 193                 printf("Buffer length: %d\n", show_blen);
 194                 printf("Buffer timeout: %d\n", show_btime);
 195         }
 196         return 0;
 197 }