/* * hid.c */ /*- * Copyright (c) 2006 Maksim Yevmenkin * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: hid.c,v 1.5 2006/09/07 21:06:53 max Exp $ * $FreeBSD$ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "bthid_config.h" #include "bthidd.h" #include "kbd.h" /* * Process data from control channel */ int32_t hid_control(bthid_session_p s, uint8_t *data, int32_t len) { assert(s != NULL); assert(data != NULL); assert(len > 0); switch (data[0] >> 4) { case 0: /* Handshake (response to command) */ if (data[0] & 0xf) syslog(LOG_ERR, "Got handshake message with error " \ "response 0x%x from %s", data[0], bt_ntoa(&s->bdaddr, NULL)); break; case 1: /* HID Control */ switch (data[0] & 0xf) { case 0: /* NOP */ break; case 1: /* Hard reset */ case 2: /* Soft reset */ syslog(LOG_WARNING, "Device %s requested %s reset", bt_ntoa(&s->bdaddr, NULL), ((data[0] & 0xf) == 1)? "hard" : "soft"); break; case 3: /* Suspend */ syslog(LOG_NOTICE, "Device %s requested Suspend", bt_ntoa(&s->bdaddr, NULL)); break; case 4: /* Exit suspend */ syslog(LOG_NOTICE, "Device %s requested Exit Suspend", bt_ntoa(&s->bdaddr, NULL)); break; case 5: /* Virtual cable unplug */ syslog(LOG_NOTICE, "Device %s unplugged virtual cable", bt_ntoa(&s->bdaddr, NULL)); session_close(s); break; default: syslog(LOG_WARNING, "Device %s sent unknown " \ "HID_Control message 0x%x", bt_ntoa(&s->bdaddr, NULL), data[0]); break; } break; default: syslog(LOG_WARNING, "Got unexpected message 0x%x on Control " \ "channel from %s", data[0], bt_ntoa(&s->bdaddr, NULL)); break; } return (0); } /* * Process data from the interrupt channel */ int32_t hid_interrupt(bthid_session_p s, uint8_t *data, int32_t len) { hid_device_p hid_device; hid_data_t d; hid_item_t h; int32_t report_id, usage, page, val, mouse_x, mouse_y, mouse_z, mouse_butt, mevents, kevents, i; assert(s != NULL); assert(s->srv != NULL); assert(data != NULL); if (len < 3) { syslog(LOG_ERR, "Got short message (%d bytes) on Interrupt " \ "channel from %s", len, bt_ntoa(&s->bdaddr, NULL)); return (-1); } if (data[0] != 0xa1) { syslog(LOG_ERR, "Got unexpected message 0x%x on " \ "Interrupt channel from %s", data[0], bt_ntoa(&s->bdaddr, NULL)); return (-1); } report_id = data[1]; data ++; len --; hid_device = get_hid_device(&s->bdaddr); assert(hid_device != NULL); mouse_x = mouse_y = mouse_z = mouse_butt = mevents = kevents = 0; for (d = hid_start_parse(hid_device->desc, 1 << hid_input, -1); hid_get_item(d, &h) > 0; ) { if ((h.flags & HIO_CONST) || (h.report_ID != report_id) || (h.kind != hid_input)) continue; page = HID_PAGE(h.usage); val = hid_get_data(data, &h); /* * When the input field is an array and the usage is specified * with a range instead of an ID, we have to derive the actual * usage by using the item value as an index in the usage range * list. */ if ((h.flags & HIO_VARIABLE)) { usage = HID_USAGE(h.usage); } else { const uint32_t usage_offset = val - h.logical_minimum; usage = HID_USAGE(h.usage_minimum + usage_offset); } switch (page) { case HUP_GENERIC_DESKTOP: switch (usage) { case HUG_X: mouse_x = val; mevents ++; break; case HUG_Y: mouse_y = val; mevents ++; break; case HUG_WHEEL: mouse_z = -val; mevents ++; break; case HUG_SYSTEM_SLEEP: if (val) syslog(LOG_NOTICE, "Sleep button pressed"); break; } break; case HUP_KEYBOARD: kevents ++; if (h.flags & HIO_VARIABLE) { if (val && usage < kbd_maxkey()) bit_set(s->keys1, usage); } else { if (val && val < kbd_maxkey()) bit_set(s->keys1, val); for (i = 1; i < h.report_count; i++) { h.pos += h.report_size; val = hid_get_data(data, &h); if (val && val < kbd_maxkey()) bit_set(s->keys1, val); } } break; case HUP_BUTTON: if (usage != 0) { if (usage == 2) usage = 3; else if (usage == 3) usage = 2; mouse_butt |= (val << (usage - 1)); mevents ++; } break; case HUP_CONSUMER: if (!val) break; switch (usage) { case HUC_AC_PAN: /* Horizontal scroll */ if (val < 0) mouse_butt |= (1 << 5); else mouse_butt |= (1 << 6); mevents ++; val = 0; break; case 0xb5: /* Scan Next Track */ val = 0x19; break; case 0xb6: /* Scan Previous Track */ val = 0x10; break; case 0xb7: /* Stop */ val = 0x24; break; case 0xcd: /* Play/Pause */ val = 0x22; break; case 0xe2: /* Mute */ val = 0x20; break; case 0xe9: /* Volume Up */ val = 0x30; break; case 0xea: /* Volume Down */ val = 0x2E; break; case 0x183: /* Media Select */ val = 0x6D; break; case 0x018a: /* Mail */ val = 0x6C; break; case 0x192: /* Calculator */ val = 0x21; break; case 0x194: /* My Computer */ val = 0x6B; break; case 0x221: /* WWW Search */ val = 0x65; break; case 0x223: /* WWW Home */ val = 0x32; break; case 0x224: /* WWW Back */ val = 0x6A; break; case 0x225: /* WWW Forward */ val = 0x69; break; case 0x226: /* WWW Stop */ val = 0x68; break; case 0x227: /* WWW Refresh */ val = 0x67; break; case 0x22a: /* WWW Favorites */ val = 0x66; break; default: val = 0; break; } /* XXX FIXME - UGLY HACK */ if (val != 0) { if (hid_device->keyboard) { int32_t buf[4] = { 0xe0, val, 0xe0, val|0x80 }; assert(s->vkbd != -1); write(s->vkbd, buf, sizeof(buf)); } else syslog(LOG_ERR, "Keyboard events " \ "received from non-keyboard " \ "device %s. Please report", bt_ntoa(&s->bdaddr, NULL)); } break; case HUP_MICROSOFT: switch (usage) { case 0xfe01: if (!hid_device->battery_power) break; switch (val) { case 1: syslog(LOG_INFO, "Battery is OK on %s", bt_ntoa(&s->bdaddr, NULL)); break; case 2: syslog(LOG_NOTICE, "Low battery on %s", bt_ntoa(&s->bdaddr, NULL)); break; case 3: syslog(LOG_WARNING, "Very low battery "\ "on %s", bt_ntoa(&s->bdaddr, NULL)); break; } break; } break; } } hid_end_parse(d); /* * XXX FIXME Feed keyboard events into kernel. * The code below works, bit host also needs to track * and handle repeat. * * Key repeat currently works in X, but not in console. */ if (kevents > 0) { if (hid_device->keyboard) { assert(s->vkbd != -1); kbd_process_keys(s); } else syslog(LOG_ERR, "Keyboard events received from " \ "non-keyboard device %s. Please report", bt_ntoa(&s->bdaddr, NULL)); } /* * XXX FIXME Feed mouse events into kernel. * The code block below works, but it is not good enough. * Need to track double-clicks etc. * * Double click currently works in X, but not in console. */ if (mevents > 0) { struct mouse_info mi; mi.operation = MOUSE_ACTION; mi.u.data.x = mouse_x; mi.u.data.y = mouse_y; mi.u.data.z = mouse_z; mi.u.data.buttons = mouse_butt; if (ioctl(s->srv->cons, CONS_MOUSECTL, &mi) < 0) syslog(LOG_ERR, "Could not process mouse events from " \ "%s. %s (%d)", bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno); } return (0); }