discord_register_osx.m
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#include <stdio.h>
#include <sys/stat.h>
#import <AppKit/AppKit.h>
#include "discord_register.h"
static bool Mkdir(const char* path)
{
int result = mkdir(path, 0755);
if (result == 0) {
return true;
}
if (errno == EEXIST) {
return true;
}
return false;
}
static void RegisterCommand(const char* applicationId, const char* command)
{
// There does not appear to be a way to register arbitrary commands on OSX, so instead we'll save the command
// to a file in the Discord config path, and when it is needed, Discord can try to load the file there, open
// the command therein (will pass to js's window.open, so requires a url-like thing)
const char* home = getenv("HOME");
if (!home) {
return;
}
char path[2048];
sprintf(path, "%s/Library/Application Support/discord", home);
Mkdir(path);
strcat(path, "/games");
Mkdir(path);
strcat(path, "/");
strcat(path, applicationId);
strcat(path, ".json");
FILE* f = fopen(path, "w");
if (f) {
char jsonBuffer[2048];
int len = snprintf(jsonBuffer, sizeof(jsonBuffer), "{\"command\": \"%s\"}", command);
fwrite(jsonBuffer, (size_t)len, 1, f);
fclose(f);
}
}
static void RegisterURL(const char* applicationId)
{
char url[256];
snprintf(url, sizeof(url), "discord-%s", applicationId);
CFStringRef cfURL = CFStringCreateWithCString(NULL, url, kCFStringEncodingUTF8);
NSString* myBundleId = [[NSBundle mainBundle] bundleIdentifier];
if (!myBundleId) {
fprintf(stderr, "No bundle id found\n");
return;
}
NSURL* myURL = [[NSBundle mainBundle] bundleURL];
if (!myURL) {
fprintf(stderr, "No bundle url found\n");
return;
}
OSStatus status = LSSetDefaultHandlerForURLScheme(cfURL, (__bridge CFStringRef)myBundleId);
if (status != noErr) {
fprintf(stderr, "Error in LSSetDefaultHandlerForURLScheme: %d\n", (int)status);
return;
}
status = LSRegisterURL((__bridge CFURLRef)myURL, true);
if (status != noErr) {
fprintf(stderr, "Error in LSRegisterURL: %d\n", (int)status);
}
}
void Discord_Register(const char* applicationId, const char* command)
{
if (command) {
RegisterCommand(applicationId, command);
}
else {
// raii lite
void* pool = [[NSAutoreleasePool alloc] init];
RegisterURL(applicationId);
[(id)pool drain];
}
}
void Discord_RegisterSteamGame(const char* applicationId, const char* steamId)
{
char command[256];
sprintf(command, "steam://run/%s", steamId);
Discord_Register(applicationId, command);
}