mdippery · June 30, 2015 06:20 · Jun 30, 2015
diff --git a/group.m b/group.m
@@ -0,0 +1,36 @@
+#import <Foundation/Foundation.h>
+#include <grp.h>
+#include <string.h>
+#include <sys/stat.h>
+
+@interface FileOwnerManager : NSObject
+- (BOOL)isWheelPresent:(NSString *)path;
+@end
+
+@implementation FileOwnerManager
+
+- (BOOL)isWheelPresent:(NSString *)path
+{
+    struct stat f_stat;
+    int res = stat([path UTF8String], &f_stat);
+    if (res != 0) {
+        NSLog(@"Error!");
+        return NO;
+    }
+    struct group *group = getgrgid(f_stat.st_gid);
+    NSLog(@"%@: %s", path, group->gr_name);
+    return strcmp(group->gr_name, "wheel") == 0;
+}
+
+@end
+
+int main(int argc, char **argv)
+{
+    BOOL res = NO;
+    @autoreleasepool {
+        FileOwnerManager *fom = [[FileOwnerManager alloc] init];
+        res = [fom isWheelPresent:[NSString stringWithUTF8String:argv[1]]];
+        [fom release];
+    }
+    return res ? 0 : 1;
+}