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#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdarg.h>
#include <getopt.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <Carbon/Carbon.h>
#define HASHTABLE_IMPLEMENTATION
#include "hashtable.h"
#include "sbuffer.h"
#include "hotload.h"
#include "event_tap.h"
#include "locale.h"
#include "tokenize.h"
#include "parse.h"
#include "hotkey.h"
#include "hotload.c"
#include "event_tap.c"
#include "locale.c"
#include "tokenize.c"
#include "parse.c"
#include "hotkey.c"
#define internal static
extern bool CGSIsSecureEventInputSet();
#define secure_keyboard_entry_enabled CGSIsSecureEventInputSet
#if 1
#define BEGIN_TIMED_BLOCK() \
clock_t timed_block_begin = clock()
#define END_TIMED_BLOCK() \
clock_t timed_block_end = clock(); \
double timed_block_elapsed = ((timed_block_end - timed_block_begin) / (double)CLOCKS_PER_SEC) * 1000.0f; \
printf("elapsed time: %.4fms\n", timed_block_elapsed)
#else
#define BEGIN_TIMED_BLOCK()
#define END_TIMED_BLOCK()
#endif
internal unsigned major_version = 0;
internal unsigned minor_version = 2;
internal unsigned patch_version = 2;
internal struct mode *current_mode;
internal struct table mode_map;
internal char *config_file;
internal void
error(const char *format, ...)
{
va_list args;
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
exit(EXIT_FAILURE);
}
internal void
warn(const char *format, ...)
{
va_list args;
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
}
internal void
parse_config_helper(char *absolutepath)
{
struct parser parser;
if (parser_init(&parser, &mode_map, absolutepath)) {
parse_config(&parser);
parser_destroy(&parser);
} else {
warn("skhd: could not open file '%s'\n", absolutepath);
}
current_mode = table_find(&mode_map, "default");
}
internal HOTLOADER_CALLBACK(config_handler)
{
free_mode_map(&mode_map);
parse_config_helper(absolutepath);
}
internal EVENT_TAP_CALLBACK(key_handler)
{
switch (type) {
case kCGEventTapDisabledByTimeout:
case kCGEventTapDisabledByUserInput: {
printf("skhd: restarting event-tap\n");
struct event_tap *event_tap = (struct event_tap *) reference;
CGEventTapEnable(event_tap->handle, 1);
} break;
case kCGEventKeyDown: {
if (!current_mode) return event;
BEGIN_TIMED_BLOCK();
struct hotkey eventkey = create_eventkey(event);
bool result = find_and_exec_hotkey(&eventkey, &mode_map, ¤t_mode);
END_TIMED_BLOCK();
if (result) return NULL;
} break;
case NX_SYSDEFINED: {
if (!current_mode) return event;
struct hotkey eventkey;
if (intercept_systemkey(event, &eventkey)) {
bool result = find_and_exec_hotkey(&eventkey, &mode_map, ¤t_mode);
if (result) return NULL;
}
} break;
}
return event;
}
internal bool
parse_arguments(int argc, char **argv)
{
int option;
const char *short_option = "vc:";
struct option long_option[] = {
{ "version", no_argument, NULL, 'v' },
{ "config", required_argument, NULL, 'c' },
{ NULL, 0, NULL, 0 }
};
while ((option = getopt_long(argc, argv, short_option, long_option, NULL)) != -1) {
switch (option) {
case 'v': {
printf("skhd version %d.%d.%d\n", major_version, minor_version, patch_version);
return true;
} break;
case 'c': {
config_file = strdup(optarg);
} break;
}
}
return false;
}
internal bool
check_privileges()
{
bool result;
const void *keys[] = { kAXTrustedCheckOptionPrompt };
const void *values[] = { kCFBooleanTrue };
CFDictionaryRef options;
options = CFDictionaryCreate(kCFAllocatorDefault,
keys, values, sizeof(keys) / sizeof(*keys),
&kCFCopyStringDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
result = AXIsProcessTrustedWithOptions(options);
CFRelease(options);
return result;
}
internal void
set_config_path()
{
char *home = getenv("HOME");
if (home) {
int length = strlen(home) + strlen("/.skhdrc");
config_file = (char *) malloc(length + 1);
strcpy(config_file, home);
strcat(config_file, "/.skhdrc");
} else {
config_file = strdup(".skhdrc");
}
}
int main(int argc, char **argv)
{
if (parse_arguments(argc, argv)) {
return EXIT_SUCCESS;
}
if (getuid() == 0 || geteuid() == 0) {
error("skhd: running as root is not allowed! abort..\n");
}
if (secure_keyboard_entry_enabled()) {
error("skhd: secure keyboard entry is enabled! abort..\n");
}
if (!check_privileges()) {
error("skhd: must be run with accessibility access! abort..\n");
}
if (!initialize_keycode_map()) {
error("skhd: could not initialize keycode map! abort..\n");
}
if (!config_file) {
set_config_path();
}
printf("skhd: using config '%s'\n", config_file);
table_init(&mode_map, 13, (table_hash_func) hash_mode, (table_compare_func) same_mode);
parse_config_helper(config_file);
signal(SIGCHLD, SIG_IGN);
init_shell();
struct event_tap event_tap;
event_tap.mask = (1 << kCGEventKeyDown) | (1 << NX_SYSDEFINED);
event_tap_begin(&event_tap, key_handler);
struct hotloader hotloader = {};
hotloader_add_file(&hotloader, config_file);
hotloader_begin(&hotloader, config_handler);
CFRunLoopRun();
return EXIT_SUCCESS;
}
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