X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=extras%2Finput_id%2Finput_id.c;h=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hb=ee9bf6bda9a3367295ca56842bb29bf197d90f48;hp=6df9ae423a65301376f6573c0bd876bd55a9aa4e;hpb=1d8296d6ed0274d70b576e9dbcb22496a87e9161;p=elogind.git diff --git a/extras/input_id/input_id.c b/extras/input_id/input_id.c index 6df9ae423..e69de29bb 100644 --- a/extras/input_id/input_id.c +++ b/extras/input_id/input_id.c @@ -1,275 +0,0 @@ -/* - * input_id - input device classification - * - * Copyright (C) 2009 Martin Pitt - * Portions Copyright (C) 2004 David Zeuthen, - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with keymap; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ - -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -/* we must use this kernel-compatible implementation */ -#define BITS_PER_LONG (sizeof(unsigned long) * 8) -#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1) -#define OFF(x) ((x)%BITS_PER_LONG) -#define BIT(x) (1UL<> OFF(bit)) & 1) - -static int debug = 0; - -static void log_fn(struct udev *udev, int priority, - const char *file, int line, const char *fn, - const char *format, va_list args) -{ - if (debug) { - fprintf(stderr, "%s: ", fn); - vfprintf(stderr, format, args); - } else { - vsyslog(priority, format, args); - } -} - -/* - * Read a capability attribute and return bitmask. - * @param dev udev_device - * @param attr sysfs attribute name (e. g. "capabilities/key") - * @param bitmask: Output array which has a sizeof of bitmask_size - */ -static void get_cap_mask (struct udev_device *dev, const char* attr, - unsigned long *bitmask, size_t bitmask_size) -{ - char text[4096]; - unsigned i; - char* word; - unsigned long val; - - snprintf(text, sizeof(text), "%s", udev_device_get_sysattr_value(dev, attr)); - - info(udev_device_get_udev(dev), "%s raw kernel attribute: %s\n", attr, text); - - memset (bitmask, 0, bitmask_size); - i = 0; - while ((word = strrchr(text, ' ')) != NULL) { - val = strtoul (word+1, NULL, 16); - if (i < bitmask_size/sizeof(unsigned long)) - bitmask[i] = val; - else - info(udev_device_get_udev(dev), "Ignoring %s block %lX which is larger than maximum size\n", attr, val); - *word = '\0'; - ++i; - } - val = strtoul (text, NULL, 16); - if (i < bitmask_size/sizeof(unsigned long)) - bitmask[i] = val; - else - info(udev_device_get_udev(dev), "Ignoring %s block %lX which is larger than maximum size\n", attr, val); - - if (debug) { - /* printf pattern with the right unsigned long number of hex chars */ - snprintf(text, sizeof(text), " bit %%4u: %%0%zilX\n", 2*sizeof(unsigned long)); - info(udev_device_get_udev(dev), "%s decoded bit map:\n", attr); - val = bitmask_size/sizeof (unsigned long); - /* skip over leading zeros */ - while (bitmask[val-1] == 0 && val > 0) - --val; - for (i = 0; i < val; ++i) - info(udev_device_get_udev(dev), text, i * BITS_PER_LONG, bitmask[i]); - } -} - -/* pointer devices */ -static void test_pointers (const unsigned long* bitmask_ev, - const unsigned long* bitmask_abs, - const unsigned long* bitmask_key, - const unsigned long* bitmask_rel) -{ - int is_mouse = 0; - int is_touchpad = 0; - - if (!test_bit (EV_KEY, bitmask_ev)) - return; - - if (test_bit (EV_ABS, bitmask_ev) && - test_bit (ABS_X, bitmask_abs) && test_bit (ABS_Y, bitmask_abs)) { - if (test_bit (BTN_STYLUS, bitmask_key) || test_bit (BTN_TOOL_PEN, bitmask_key)) - puts("ID_INPUT_TABLET=1"); - else if (test_bit (BTN_TOOL_FINGER, bitmask_key) && !test_bit (BTN_TOOL_PEN, bitmask_key)) - is_touchpad = 1; - else if (test_bit (BTN_TRIGGER, bitmask_key) || - test_bit (BTN_A, bitmask_key) || - test_bit (BTN_1, bitmask_key)) - puts("ID_INPUT_JOYSTICK=1"); - else if (test_bit (BTN_MOUSE, bitmask_key)) - /* This path is taken by VMware's USB mouse, which has - * absolute axes, but no touch/pressure button. */ - is_mouse = 1; - else if (test_bit (BTN_TOUCH, bitmask_key)) - puts("ID_INPUT_TOUCHSCREEN=1"); - } - - if (test_bit (EV_REL, bitmask_ev) && - test_bit (REL_X, bitmask_rel) && test_bit (REL_Y, bitmask_rel) && - test_bit (BTN_MOUSE, bitmask_key)) - is_mouse = 1; - - if (is_mouse) - puts("ID_INPUT_MOUSE=1"); - if (is_touchpad) - puts("ID_INPUT_TOUCHPAD=1"); -} - -/* key like devices */ -static void test_key (struct udev *udev, - const unsigned long* bitmask_ev, - const unsigned long* bitmask_key) -{ - unsigned i; - unsigned long found; - unsigned long mask; - - /* do we have any KEY_* capability? */ - if (!test_bit (EV_KEY, bitmask_ev)) { - info(udev, "test_key: no EV_KEY capability\n"); - return; - } - - /* only consider KEY_* here, not BTN_* */ - found = 0; - for (i = 0; i < BTN_MISC/BITS_PER_LONG; ++i) { - found |= bitmask_key[i]; - info(udev, "test_key: checking bit block %lu for any keys; found=%i\n", i*BITS_PER_LONG, found > 0); - } - /* If there are no keys in the lower block, check the higher block */ - if (!found) { - for (i = KEY_OK; i < BTN_TRIGGER_HAPPY; ++i) { - if (test_bit (i, bitmask_key)) { - info(udev, "test_key: Found key %x in high block\n", i); - found = 1; - break; - } - } - } - - if (found > 0) - puts("ID_INPUT_KEY=1"); - - /* the first 32 bits are ESC, numbers, and Q to D; if we have all of - * those, consider it a full keyboard; do not test KEY_RESERVED, though */ - mask = 0xFFFFFFFE; - if ((bitmask_key[0] & mask) == mask) - puts("ID_INPUT_KEYBOARD=1"); -} - -static void help () -{ - printf("Usage: input_id [options] \n" - " --debug debug to stderr\n" - " --help print this help text\n\n"); -} - -int main (int argc, char** argv) -{ - struct udev *udev; - struct udev_device *dev; - - static const struct option options[] = { - { "debug", no_argument, NULL, 'd' }, - { "help", no_argument, NULL, 'h' }, - {} - }; - - char devpath[PATH_MAX]; - unsigned long bitmask_ev[NBITS(EV_MAX)]; - unsigned long bitmask_abs[NBITS(ABS_MAX)]; - unsigned long bitmask_key[NBITS(KEY_MAX)]; - unsigned long bitmask_rel[NBITS(REL_MAX)]; - - udev = udev_new(); - if (udev == NULL) - return 1; - - udev_log_init("input_id"); - udev_set_log_fn(udev, log_fn); - - /* CLI argument parsing */ - while (1) { - int option; - - option = getopt_long(argc, argv, "dxh", options, NULL); - if (option == -1) - break; - - switch (option) { - case 'd': - debug = 1; - if (udev_get_log_priority(udev) < LOG_INFO) - udev_set_log_priority(udev, LOG_INFO); - break; - case 'h': - help(); - exit(0); - default: - exit(1); - } - } - - if (argv[optind] == NULL) { - help(); - exit(1); - } - - /* get the device */ - snprintf(devpath, sizeof(devpath), "%s/%s", udev_get_sys_path(udev), argv[optind]); - dev = udev_device_new_from_syspath(udev, devpath); - if (dev == NULL) { - fprintf(stderr, "unable to access '%s'\n", devpath); - return 1; - } - - /* walk up the parental chain until we find the real input device; the - * argument is very likely a subdevice of this, like eventN */ - while (dev != NULL && udev_device_get_sysattr_value(dev, "capabilities/ev") == NULL) - dev = udev_device_get_parent_with_subsystem_devtype(dev, "input", NULL); - - /* not an "input" class device */ - if (dev == NULL) - return 0; - - /* Use this as a flag that input devices were detected, so that this - * program doesn't need to be called more than once per device */ - puts("ID_INPUT=1"); - - get_cap_mask (dev, "capabilities/ev", bitmask_ev, sizeof (bitmask_ev)); - get_cap_mask (dev, "capabilities/abs", bitmask_abs, sizeof (bitmask_abs)); - get_cap_mask (dev, "capabilities/rel", bitmask_rel, sizeof (bitmask_rel)); - get_cap_mask (dev, "capabilities/key", bitmask_key, sizeof (bitmask_key)); - - test_pointers(bitmask_ev, bitmask_abs, bitmask_key, bitmask_rel); - - test_key(udev, bitmask_ev, bitmask_key); - - return 0; -}