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Diffstat (limited to 'src/relabsd_device.c')
| -rw-r--r-- | src/relabsd_device.c | 298 |
1 files changed, 0 insertions, 298 deletions
diff --git a/src/relabsd_device.c b/src/relabsd_device.c deleted file mode 100644 index 51dd6c0..0000000 --- a/src/relabsd_device.c +++ /dev/null @@ -1,298 +0,0 @@ -#include <string.h> -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> -#include <stdlib.h> -#include <stdio.h> - -#include <libevdev/libevdev-uinput.h> - -#include "error.h" -#include "axis.h" -#include "config.h" - -#include "relabsd_device.h" - -/* - LIBEVDEV_UINPUT_OPEN_MANAGED is not defined on my machines. - It is not my place to define it, so I'll avoid the issue by defining my own - constant. -*/ -#ifndef LIBEVDEV_UINPUT_OPEN_MANAGED - #pragma message "[WARNING] libevdev did not define "\ - "LIBEVDEV_UINPUT_OPEN_MANAGED, using value '-2' instead." - #define RELABSD_UINPUT_OPEN_MANAGED -2 -#else - #define RELABSD_UINPUT_OPEN_MANAGED LIBEVDEV_UINPUT_OPEN_MANAGED -#endif - -static void replace_rel_axes -( - struct relabsd_device * const dev, - const struct relabsd_config * const config -) -{ - int i; - struct input_absinfo absinfo; - unsigned int abs_code, rel_code; - - for (i = RELABSD_VALID_AXES_COUNT; i --> 0;) - { - if (config->axis[i].enabled) - { - rel_code = relabsd_axis_to_rel((enum relabsd_axis) i); - abs_code = relabsd_axis_to_abs((enum relabsd_axis) i); - - relabsd_config_get_absinfo(config, (enum relabsd_axis) i, &absinfo); - libevdev_disable_event_code(dev->dev, EV_REL, rel_code); - libevdev_enable_event_code(dev->dev, EV_ABS, abs_code, &absinfo); - } - } - -} - -static int rename_device -( - struct libevdev * const dev, - const struct relabsd_config * const config -) -{ - size_t new_name_size; - char * new_name; - const char * real_name; - - /* +2: One for the \0, one for the space between prefix and 'real_name'. */ - new_name_size = strlen(RELABSD_DEVICE_PREFIX) + 2; - - if (config->device_name == (char *) NULL) - { - /* XXX - * "The name is never NULL but it may be the empty string." - * I'm assuming that since they use the term 'string', it is \0 - * terminated. - */ - real_name = libevdev_get_name(dev); - } - else - { - real_name = config->device_name; - } - - new_name_size += strlen(real_name); - - new_name = (char *) calloc(new_name_size, sizeof(char)); - - if (new_name == (char *) NULL) - { - RELABSD_ERROR - ( - "Attempt at allocating memory to create the virtual device's name " - "failed: %s.", - strerror(errno) - ); - - /* This frees whatever came from 'libevdev_get_name'. */ - libevdev_set_name(dev, RELABSD_DEVICE_PREFIX); - - return -1; - } - - if - ( - snprintf - ( - new_name, - new_name_size, - "%s %s", - RELABSD_DEVICE_PREFIX, - real_name - ) - != ((int) (new_name_size - 1)) - ) - { - /* This makes for a great message when strerror(errno) returns SUCCESS. */ - RELABSD_ERROR - ( - "Something unexpected happened while renaming the virtual device: %s.", - strerror(errno) - ); - - /* This frees whatever came from 'libevdev_get_name'. */ - libevdev_set_name(dev, RELABSD_DEVICE_PREFIX); - - free((void *) new_name); - - return -1; - } - - /* This frees whatever came from 'libevdev_get_name'. */ - libevdev_set_name(dev, new_name); - free((void *) new_name); - - return 0; -} - -int relabsd_device_create -( - struct relabsd_device * const dev, - const struct relabsd_config * const config -) -{ - int fd; - - RELABSD_S_DEBUG(RELABSD_DEBUG_PROGRAM_FLOW, "Creating virtual device..."); - - fd = open(config->input_file, O_RDONLY); - - if (fd < 0) - { - RELABSD_FATAL - ( - "Could not open device '%s' in read only mode: %s.", - config->input_file, - strerror(errno) - ); - - return -1; - } - - if (libevdev_new_from_fd(fd, &(dev->dev)) < 0) - { - RELABSD_FATAL - ( - "libevdev could not open '%s': '%s'.", - config->input_file, - strerror(errno) - ); - - close(fd); - - return -1; - } - - if (rename_device(dev->dev, config) < 0) - { - libevdev_free(dev->dev); - close(fd); - - return -1; - } - - libevdev_enable_event_type(dev->dev, EV_ABS); - - replace_rel_axes(dev, config); - - if - ( - libevdev_uinput_create_from_device - ( - dev->dev, - /* See top of the file. */ - RELABSD_UINPUT_OPEN_MANAGED, - &(dev->uidev) - ) - < 0 - ) - { - RELABSD_FATAL("Could not create relabsd device: %s.", strerror(errno)); - - libevdev_free(dev->dev); - - close(fd); - - return -1; - } - - close(fd); - - return 0; -} - -void relabsd_device_destroy (const struct relabsd_device * const dev) -{ - RELABSD_S_DEBUG(RELABSD_DEBUG_PROGRAM_FLOW, "Destroying virtual device..."); - - libevdev_uinput_destroy(dev->uidev); - libevdev_free(dev->dev); -} - -int relabsd_device_write_evdev_event -( - const struct relabsd_device * const dev, - unsigned int const type, - unsigned int const code, - int const value -) -{ - RELABSD_DEBUG - ( - RELABSD_DEBUG_VIRTUAL_EVENTS, - "Sending event: {type = %s; code = %s; value = %d}.", - libevdev_event_type_get_name(type), - libevdev_event_code_get_name(type, code), - value - ); - - /* - * We'll also send the 'EV_SYN' events when we receive them from the input - * device. - * OPTIMIZE: prevent 'EV_SYN' from being sent if we haven't sent any new - * values. (It might not be worth it though) - */ - if (libevdev_uinput_write_event(dev->uidev, type, code, value) == 0) - { - /* FIXME: - * Why does activating the timeout trigger the EV_KEYS event to not be - * followed by EV_SYN? - */ - if (type == EV_KEY) - { - libevdev_uinput_write_event - ( - dev->uidev, - EV_SYN, - SYN_REPORT, - 0 - ); - } - - return 0; - } - - return -1; -} - -void relabsd_device_set_axes_to_zero -( - const struct relabsd_device * const dev, - const struct relabsd_config * const config -) -{ - int i; - - for (i = 0; i < RELABSD_VALID_AXES_COUNT; ++i) - { - if (config->axis[i].enabled) - { - relabsd_device_write_evdev_event - ( - dev, - EV_ABS, - relabsd_axis_to_abs((enum relabsd_axis) i), - 0 - ); - } - } - - /* - * Also send a SYN event when the axes have been modified. - */ - libevdev_uinput_write_event - ( - dev->uidev, - EV_SYN, - SYN_REPORT, - 0 - ); -} - |