nextcloud-desktop/shell_integration/MacOSX/OwnCloudInjector/OwnCloudInjector.m

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#import <Cocoa/Cocoa.h>
#import "LNStandardVersionComparator.h"
#define EXPORT __attribute__((visibility("default")))
#define WAIT_FOR_APPLE_EVENT_TO_ENTER_HANDLER_IN_SECONDS 1.0
#define FINDER_MIN_TESTED_VERSION @"10.7"
#define FINDER_MAX_TESTED_VERSION @"10.8.5"
#define LIFERAYNATIVITY_INJECTED_NOTIFICATION @"OwnCloudInjectedNotification"
EXPORT OSErr HandleLoadEvent(const AppleEvent* ev, AppleEvent* reply, long refcon);
static NSString* globalLock = @"I'm the global lock to prevent concruent handler executions";
// SIMBL-compatible interface
@interface OwnCloudShell : NSObject { }
-(void) install;
-(void) uninstall;
@end
// just a dummy class for locating our bundle
@interface OwnCloudInjector : NSObject { }
@end
@implementation OwnCloudInjector { }
@end
static bool liferayNativityLoaded = false;
static NSString* liferayNativityBundleName = @"OwnCloudFinder";
typedef struct {
NSString* location;
} configuration;
static OSErr AEPutParamString(AppleEvent* event, AEKeyword keyword, NSString* string) {
UInt8* textBuf;
CFIndex length, maxBytes, actualBytes;
length = CFStringGetLength((CFStringRef)string);
maxBytes = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
textBuf = malloc(maxBytes);
if (textBuf) {
CFStringGetBytes((CFStringRef)string, CFRangeMake(0, length), kCFStringEncodingUTF8, 0, true, (UInt8*)textBuf, maxBytes, &actualBytes);
OSErr err = AEPutParamPtr(event, keyword, typeUTF8Text, textBuf, actualBytes);
free(textBuf);
return err;
} else {
return memFullErr;
}
}
static void reportError(AppleEvent* reply, NSString* msg) {
NSLog(@"LiferayNativityInjector: %@", msg);
AEPutParamString(reply, keyErrorString, msg);
}
typedef enum {
InvalidBundleType,
LiferayNativityBundleType,
} LNBundleType;
static OSErr loadBundle(LNBundleType type, AppleEvent* reply, long refcon) {
bool isLoaded = false;
NSString* bundleName = nil;
NSString* targetAppName = nil;
NSString* versionCheckKey = nil;
NSString* maxVersion = nil;
NSString* minVersion = nil;
switch (type) {
case LiferayNativityBundleType:
isLoaded = liferayNativityLoaded;
bundleName = liferayNativityBundleName;
targetAppName = @"Finder";
versionCheckKey = @"LiferayNativityFinderVersionCheck";
maxVersion = FINDER_MAX_TESTED_VERSION;
minVersion = FINDER_MIN_TESTED_VERSION;
break;
default:
NSLog(@"Failed to load bundle for type %d", type);
return 8;
break;
}
if (isLoaded) {
NSLog(@"LiferayNativityInjector: %@ already loaded.", bundleName);
return noErr;
}
@try {
NSBundle* mainBundle = [NSBundle mainBundle];
if (!mainBundle) {
reportError(reply, [NSString stringWithFormat:@"Unable to locate main %@ bundle!", targetAppName]);
return 4;
}
NSString* mainVersion = [mainBundle objectForInfoDictionaryKey:@"CFBundleVersion"];
if (!mainVersion || ![mainVersion isKindOfClass:[NSString class]]) {
reportError(reply, [NSString stringWithFormat:@"Unable to determine %@ version!", targetAppName]);
return 5;
}
// future compatibility check
if (type == LiferayNativityBundleType) {
// in Dock we cannot use NSAlert and similar UI stuff - this would hang the Dock process and cause 100% CPU load
NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
if ([defaults boolForKey:versionCheckKey]) {
LNStandardVersionComparator* comparator = [LNStandardVersionComparator defaultComparator];
if (([comparator compareVersion:mainVersion toVersion:maxVersion] == NSOrderedDescending) ||
([comparator compareVersion:mainVersion toVersion:minVersion] == NSOrderedAscending)) {
NSAlert* alert = [NSAlert new];
[alert setMessageText:[NSString stringWithFormat:@"You have %@ version %@", targetAppName, mainVersion]];
[alert setInformativeText:[NSString stringWithFormat:@"But %@ was properly tested only with %@ versions in range %@ - %@\n\nYou have probably updated your system and %@ version got bumped by Apple developers.\n\nYou may expect a new LiferayNativity release soon.", bundleName, targetAppName, targetAppName, minVersion, maxVersion]];
[alert setShowsSuppressionButton:YES];
[alert addButtonWithTitle:@"Launch LiferayNativity anyway"];
[alert addButtonWithTitle:@"Cancel"];
NSInteger res = [alert runModal];
if ([[alert suppressionButton] state] == NSOnState) {
[defaults setBool:NO forKey:versionCheckKey];
}
if (res != NSAlertFirstButtonReturn) {
// cancel
return noErr;
}
}
}
}
NSBundle* liferayNativityInjectorBundle = [NSBundle bundleForClass:[OwnCloudInjector class]];
NSString* liferayNativityLocation = [liferayNativityInjectorBundle pathForResource:bundleName ofType:@"bundle"];
NSBundle* pluginBundle = [NSBundle bundleWithPath:liferayNativityLocation];
if (!pluginBundle) {
reportError(reply, [NSString stringWithFormat:@"Unable to create bundle from path: %@ [%@]", liferayNativityLocation, liferayNativityInjectorBundle]);
return 2;
}
NSError* error;
if (![pluginBundle loadAndReturnError:&error]) {
reportError(reply, [NSString stringWithFormat:@"Unable to load bundle from path: %@ error: %@", liferayNativityLocation, [error localizedDescription]]);
return 6;
}
Class principalClass = [pluginBundle principalClass];
if (!principalClass) {
reportError(reply, [NSString stringWithFormat:@"Unable to retrieve principalClass for bundle: %@", pluginBundle]);
return 3;
}
id principalClassObject = NSClassFromString(NSStringFromClass(principalClass));
if ([principalClassObject respondsToSelector:@selector(install)]) {
NSLog(@"LiferayNativityInjector: Installing %@ ...", bundleName);
[principalClassObject install];
}
return noErr;
} @catch (NSException* exception) {
reportError(reply, [NSString stringWithFormat:@"Failed to load %@ with exception: %@", bundleName, exception]);
}
return 1;
}
static LNBundleType mainBundleType(AppleEvent* reply) {
@try {
NSBundle* mainBundle = [NSBundle mainBundle];
if (!mainBundle) {
reportError(reply, [NSString stringWithFormat:@"Unable to locate main bundle!"]);
return InvalidBundleType;
}
if ([[mainBundle bundleIdentifier] isEqualToString:@"com.apple.finder"]) {
return LiferayNativityBundleType;
}
} @catch (NSException* exception) {
reportError(reply, [NSString stringWithFormat:@"Failed to load main bundle with exception: %@", exception]);
}
return InvalidBundleType;
}
EXPORT OSErr HandleLoadEvent(const AppleEvent* ev, AppleEvent* reply, long refcon) {
@synchronized(globalLock) {
@autoreleasepool {
NSBundle* injectorBundle = [NSBundle bundleForClass:[OwnCloudInjector class]];
NSString* injectorVersion = [injectorBundle objectForInfoDictionaryKey:@"CFBundleVersion"];
if (!injectorVersion || ![injectorVersion isKindOfClass:[NSString class]]) {
reportError(reply, [NSString stringWithFormat:@"Unable to determine OwnCloudInjector version!"]);
return 7;
}
@try {
OSErr err = loadBundle(mainBundleType(reply), reply, refcon);
if (err != noErr)
{
return err;
}
pid_t pid = [[NSProcessInfo processInfo] processIdentifier];
[[NSDistributedNotificationCenter defaultCenter]postNotificationName:LIFERAYNATIVITY_INJECTED_NOTIFICATION object:[[NSBundle mainBundle]bundleIdentifier] userInfo:@{@"pid": @(pid)}];
liferayNativityLoaded = true;
return noErr;
} @catch (NSException* exception) {
reportError(reply, [NSString stringWithFormat:@"Failed to load OwnCloudFinder with exception: %@", exception]);
}
return 1;
}
}
}
EXPORT OSErr HandleLoadedEvent(const AppleEvent* ev, AppleEvent* reply, long refcon) {
@synchronized(globalLock) {
@autoreleasepool {
LNBundleType type = mainBundleType(reply);
if ((type == LiferayNativityBundleType) && liferayNativityLoaded) {
return noErr;
}
reportError(reply, @"LiferayNativity not loaded");
return 1;
}
}
}
EXPORT OSErr HandleUnloadEvent(const AppleEvent* ev, AppleEvent* reply, long refcon) {
@synchronized(globalLock) {
@autoreleasepool {
@try {
if (!liferayNativityLoaded) {
NSLog(@"OwnCloudInjector: not loaded.");
return noErr;
}
NSString* bundleName = liferayNativityBundleName;
NSBundle* liferayNativityInjectorBundle = [NSBundle bundleForClass:[OwnCloudInjector class]];
NSString* liferayNativityLocation = [liferayNativityInjectorBundle pathForResource:bundleName ofType:@"bundle"];
NSBundle* pluginBundle = [NSBundle bundleWithPath:liferayNativityLocation];
if (!pluginBundle) {
reportError(reply, [NSString stringWithFormat:@"Unable to create bundle from path: %@ [%@]", liferayNativityLocation, liferayNativityInjectorBundle]);
return 2;
}
Class principalClass = [pluginBundle principalClass];
if (!principalClass) {
reportError(reply, [NSString stringWithFormat:@"Unable to retrieve principalClass for bundle: %@", pluginBundle]);
return 3;
}
id principalClassObject = NSClassFromString(NSStringFromClass(principalClass));
if ([principalClassObject respondsToSelector:@selector(uninstall)]) {
NSLog(@"LiferayNativityInjector: Uninstalling %@ ...", bundleName);
[principalClassObject uninstall];
}
liferayNativityLoaded = false;
return noErr;
} @catch (NSException* exception) {
reportError(reply, [NSString stringWithFormat:@"Failed to unload OwnCloudFinder with exception: %@", exception]);
}
return 1;
}
}
}