evtest-create-device.xsl

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!--
   3
   4  Copyright (c) 2009 Red Hat, Inc.
   5
   6  This program is free software; you can redistribute it and/or modify
   7  it under the terms of the GNU General Public License as published by
   8  the Free Software Foundation; either version 2 of the License, or
   9  (at your option) any later version.
  10
  11  This program is distributed in the hope that it will be useful,
  12  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  GNU General Public License for more details.
  15
  16  You should have received a copy of the GNU General Public License
  17  along with this program; if not, write to the Free Software
  18  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  -->
  20
  21 <!-- use this file with xsltproc evtest-replace.xml <input.xml>
  22     where <input.xml> is the xml file generated by evtest-capture.
  23  -->
  24
  25 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  26   <xsl:output method="text" indent="yes" encoding="UTF-8"/>
  27
  28
  29   <xsl:template match="/evtest-capture">
  30       <![CDATA[
  31 /*
  32  Copyright (c) 2009 Red Hat, Inc.
  33
  34  This program is free software; you can redistribute it and/or modify
  35  it under the terms of the GNU General Public License as published by
  36  the Free Software Foundation; either version 2 of the License, or
  37  (at your option) any later version.
  38
  39  This program is distributed in the hope that it will be useful,
  40  but WITHOUT ANY WARRANTY; without even the implied warranty of
  41  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  42  GNU General Public License for more details.
  43
  44  You should have received a copy of the GNU General Public License
  45  along with this program; if not, write to the Free Software
  46  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  47 */
  48
  49 #include <stdio.h>
  50 #include <string.h>
  51 #include <errno.h>
  52 #include <fcntl.h>
  53 #include <unistd.h>
  54 #include <linux/input.h>
  55 #include <linux/uinput.h>
  56 #include <dlfcn.h>
  57
  58 static int fd   = -1;
  59
  60 static void send_event(int fd, int type, int code, int value, int sec, int usec);
  61
  62 static int setup(struct uinput_user_dev *dev, int fd)
  63 {
  64 ]]>
  65 <xsl:apply-templates select="info/id"/>
  66 <xsl:apply-templates select="info/event-type"/>
  67 <![CDATA[
  68
  69     return 0;
  70 error:
  71     perror("ioctl failed.");
  72     return -1;
  73 }
  74
  75 static int run(int fd)
  76 {
  77 ]]>
  78 <xsl:apply-templates select="events"/>
  79 <![CDATA[
  80     return 0;
  81 }
  82
  83 static int init_uinput()
  84 {
  85     struct uinput_user_dev dev;
  86
  87     fd = open("/dev/uinput", O_RDWR);
  88     if (fd < 0 && errno == ENODEV)
  89         fd = open("/dev/input/uinput", O_RDWR);
  90     if (fd < 0)
  91         goto error;
  92
  93     memset(&dev, 0, sizeof(dev));
  94     setup(&dev, fd);
  95
  96     if (write(fd, &dev, sizeof(dev)) < sizeof(dev))
  97         goto error;
  98     if (ioctl(fd, UI_DEV_CREATE, NULL) == -1) goto error;
  99
 100     return 0;
 101
 102 error:
 103     fprintf(stderr, "Error: %s\n", strerror(errno));
 104
 105     if (fd != -1)
 106         close(fd);
 107
 108     return -1;
 109 }
 110
 111 static void cleanup_uinput(void)
 112 {
 113     if (fd == -1)
 114         return;
 115
 116     ioctl(fd, UI_DEV_DESTROY, NULL);
 117     close(fd);
 118     fd = -1;
 119 }
 120
 121 static void send_event(int fd, int type, int code, int value, int sec, int usec)
 122 {
 123     static int sec_offset = -1;
 124     static long last_time = -1;
 125     long newtime;
 126     struct input_event event;
 127
 128     event.type  = type;
 129     event.code  = code;
 130     event.value = value;
 131
 132     if (sec_offset == -1)
 133         sec_offset = sec;
 134
 135     sec -= sec_offset;
 136     newtime = sec * 1000000 + usec;
 137
 138     if (last_time > 0)
 139         usleep(newtime - last_time);
 140
 141     if (write(fd, &event, sizeof(event)) < sizeof(event))
 142         perror("Send event failed.");
 143
 144     last_time = newtime;
 145 }
 146
 147 int main (int argc, char **argv)
 148 {
 149     if (init_uinput() < 0) {
 150         fprintf(stderr,
 151                 "Failed to initialize /dev/input/uinput. Exiting.\n");
 152         return -1;
 153     }
 154
 155     printf("Device created. Press CTRL+C to terminate.\n");
 156     run(fd);
 157
 158     cleanup_uinput();
 159
 160     return 0;
 161 }
 162 ]]>
 163   </xsl:template>
 164
 165   <!-- Setup the required uinput bits to make the device look real
 166        The funky comments at the start of the lines are just to improve
 167        the output indenting.
 168   -->
 169   <xsl:template match="event-type">
 170     if (ioctl(fd, UI_SET_EVBIT, <xsl:value-of select="@type"/>) == -1) goto error;
 171 <!-- --><xsl:for-each select="code">
 172         <xsl:choose>
 173             <xsl:when test="../@type = 'EV_KEY'">
 174     if (ioctl(fd, UI_SET_KEYBIT, <xsl:value-of select="@value"/>) == -1) goto error;
 175 <!--     --></xsl:when>
 176             <xsl:when test="../@type = 'EV_REL'">
 177     if (ioctl(fd, UI_SET_RELBIT, <xsl:value-of select="@value"/>) == -1) goto error;
 178 <!--     --></xsl:when>
 179             <xsl:when test="../@type = 'EV_MSC'">
 180     if (ioctl(fd, UI_SET_MSCBIT, <xsl:value-of select="@value"/>) == -1) goto error;
 181 <!--     --></xsl:when>
 182             <xsl:when test="../@type = 'EV_ABS'">
 183     if (ioctl(fd, UI_SET_ABSBIT, <xsl:value-of select="@value"/>) == -1) goto error;
 184     else {
 185         int idx = <xsl:value-of select="@value"/>;
 186         dev->absmin[idx] = <xsl:value-of select="@abs-min"/>;
 187         dev->absmax[idx] = <xsl:value-of select="@abs-max"/>;
 188         dev->absfuzz[idx] = <xsl:value-of select="@abs-fuzz"/>;
 189         dev->absflat[idx] = <xsl:value-of select="@abs-flat"/>;
 190
 191         if (dev->absmin[idx] == dev->absmax[idx])
 192             dev->absmax[idx]++;
 193     }
 194 <!--         --></xsl:when>
 195         </xsl:choose>
 196     </xsl:for-each>
 197   </xsl:template>
 198
 199   <xsl:template match="id">
 200     strcpy(dev->name, "<xsl:value-of select="."/>");
 201     dev->id.bustype = <xsl:value-of select="@bus"/>;
 202     dev->id.vendor = <xsl:value-of select="@vendor"/>;
 203     dev->id.product = <xsl:value-of select="@product"/>;
 204     dev->id.version = <xsl:value-of select="@version"/>;
 205   </xsl:template>
 206
 207   <!-- code replaying the events -->
 208   <xsl:template match="events">
 209       <xsl:for-each select="event">
 210     send_event(fd, <xsl:value-of select="@type"/>, <xsl:value-of select="@code"/>, <xsl:value-of select="@value"/>, <xsl:value-of select="@sec"/>, <xsl:value-of select="@usec"/>);</xsl:for-each>
 211   </xsl:template>
 212
 213 </xsl:stylesheet>
 214