Change your Lion sidebar item icons

sidebar.m

// (l) copyleft 2011 Adam Strzelecki nanoant.com
//
// Usage:
//   sidebar               - to see the ids of your favorite sidebar items
//   sidebar ItemName      - to remove item specific icon
//   sidebar ItemName sbBj - to set specific item icon, see:
//                           /System/Library/CoreServices/CoreTypes.bundle/Contents/Info.plist
// Compile it with:
//   gcc -o sidebar sidebar.m -F /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/CoreServices.framework/Frameworks -framework Foundation -framework CoreServices
//
// Some interesting IDs:
//   com.apple.LSSharedFileList.SpecialItemIdentifier
//   com.apple.LSSharedFileList.TemplateSystemSelector

#import <Foundation/Foundation.h>
#import <LaunchServices/LaunchServices.h>

extern CFTypeRef LSSharedFileListItemCopyAliasData(LSSharedFileListItemRef inItem);
extern int _IconRefIsTemplate(IconRef iconRef);

extern CFStringRef kLSSharedFileListSpecialItemIdentifier;
extern CFStringRef kLSSharedFileListItemTargetName;
extern CFStringRef kLSSharedFileListItemManaged;
// I am so smart, this symbol isn't exposed by LaunchServices framework, but I get it anyhow with help of "nm" ;)
#define kLSSharedFileListItemTemplateSystemSelector (CFStringRef)((char *)kLSSharedFileListItemTargetName + (3 * 0x40))
#define kLSSharedFileListItemClass (CFStringRef)((char *)kLSSharedFileListItemBeforeFirst + (3 * 0x40))

int main (int argc, char const *argv[])
{
	NSAutoreleasePool *pool = [NSAutoreleasePool new];
	LSSharedFileListRef sflRef = LSSharedFileListCreate(kCFAllocatorDefault, kLSSharedFileListFavoriteItems, NULL);
	UInt32 seed;
	SInt32 type = 0;
	CFStringRef desiredNameRef = NULL;

	if(argc >= 2) {
		desiredNameRef = CFStringCreateWithCStringNoCopy(kCFAllocatorDefault, argv[1], kCFStringEncodingUTF8, NULL);
		if(argc >= 3) {
			type = atol(argv[2]);
			if(!type && strlen(argv[2]) != 4) {
				NSLog(@"type must be 4 characters");
				return 254;
			}
			if(!type) type = (argv[2][3] << 0) + (argv[2][2] << 8) + (argv[2][1] << 16) + (argv[2][0] << 24);
		}
	}

	if(!sflRef) {
		NSLog(@"No list!");
		return 1;
	}

	NSArray *list = [(NSArray *)LSSharedFileListCopySnapshot(sflRef, &seed) autorelease];

	LSSharedFileListItemRef sflItemBeforeRef = (LSSharedFileListItemRef)kLSSharedFileListItemBeforeFirst;

	for(NSObject *object in list) {
		LSSharedFileListItemRef sflItemRef = (LSSharedFileListItemRef)object;
		CFStringRef nameRef = LSSharedFileListItemCopyDisplayName(sflItemRef);
		CFURLRef urlRef = NULL;
		LSSharedFileListItemResolve(sflItemRef, kLSSharedFileListNoUserInteraction | kLSSharedFileListDoNotMountVolumes, &urlRef, NULL);

		if(!desiredNameRef) {
			UInt32 itemId = LSSharedFileListItemGetID(sflItemRef);
		
			NSLog(@"[%u] %@ -> %@", itemId, (id)nameRef, (id)urlRef);
			if(urlRef)  CFRelease(urlRef);
			if(nameRef) CFRelease(nameRef);
		
			CFStringRef props[] = {
				// kLSSharedFileListItemClass,
				kLSSharedFileListItemTemplateSystemSelector,
				kLSSharedFileListSpecialItemIdentifier,
				kLSSharedFileListItemManaged,
			};
			int i;
			for(i = 0; i < sizeof(props)/sizeof(*props); i++) {
				CFTypeRef propRef = LSSharedFileListItemCopyProperty(sflItemRef, props[i]);
				NSLog(@" %p: %@ = %@ (%@)", props[i], (id)props[i], (id)propRef, propRef ? (id)CFCopyTypeIDDescription(CFGetTypeID(propRef)) : nil);
				if(propRef) CFRelease(propRef);
			}
		} else {
			if(CFEqual(nameRef, desiredNameRef)) {
				if(!type) {
					NSLog(@"Cleared: %@", nameRef);
					LSSharedFileListInsertItemURL(sflRef, sflItemBeforeRef, nameRef, NULL, urlRef, NULL, (CFArrayRef)[NSArray arrayWithObject:(id)kLSSharedFileListItemTemplateSystemSelector]);
				} else {
					LSSharedFileListItemSetProperty(sflItemRef, kLSSharedFileListItemTemplateSystemSelector, CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &type));
				}
			}
		}
		sflItemBeforeRef = sflItemRef;
	}

	CFRelease(sflRef);
	[pool drain];
	return 0;
}