Tweak.mm

   1 /* Veency - VNC Remote Access Server for iPhoneOS
   2  * Copyright (C) 2008-2010  Jay Freeman (saurik)
   3 */
   4
   5 /*
   6  *        Redistribution and use in source and binary
   7  * forms, with or without modification, are permitted
   8  * provided that the following conditions are met:
   9  *
  10  * 1. Redistributions of source code must retain the
  11  *    above copyright notice, this list of conditions
  12  *    and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the
  14  *    above copyright notice, this list of conditions
  15  *    and the following disclaimer in the documentation
  16  *    and/or other materials provided with the
  17  *    distribution.
  18  * 3. The name of the author may not be used to endorse
  19  *    or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  24  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  28  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  33  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  34  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  35  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36 */
  37
  38 #define _trace() \
  39     fprintf(stderr, "_trace()@%s:%u[%s]\n", __FILE__, __LINE__, __FUNCTION__)
  40 #define _unlikely(expr) \
  41     __builtin_expect(expr, 0)
  42
  43 #include <substrate.h>
  44
  45 #include <rfb/rfb.h>
  46 #include <rfb/keysym.h>
  47
  48 #include <mach/mach_port.h>
  49 #include <sys/mman.h>
  50
  51 #import <QuartzCore/CAWindowServer.h>
  52 #import <QuartzCore/CAWindowServerDisplay.h>
  53
  54 #import <CoreGraphics/CGGeometry.h>
  55 #import <GraphicsServices/GraphicsServices.h>
  56 #import <Foundation/Foundation.h>
  57 #import <IOMobileFramebuffer/IOMobileFramebuffer.h>
  58 #import <IOKit/IOKitLib.h>
  59 #import <UIKit/UIKit.h>
  60
  61 #import <SpringBoard/SBAlertItemsController.h>
  62 #import <SpringBoard/SBDismissOnlyAlertItem.h>
  63 #import <SpringBoard/SBStatusBarController.h>
  64
  65 extern "C" void CoreSurfaceBufferFlushProcessorCaches(CoreSurfaceBufferRef buffer);
  66
  67 static size_t width_;
  68 static size_t height_;
  69
  70 static const size_t BytesPerPixel = 4;
  71 static const size_t BitsPerSample = 8;
  72
  73 static CoreSurfaceAcceleratorRef accelerator_;
  74 static CoreSurfaceBufferRef buffer_;
  75 static CFDictionaryRef options_;
  76
  77 static NSMutableSet *handlers_;
  78 static rfbScreenInfoPtr screen_;
  79 static bool running_;
  80 static int buttons_;
  81 static int x_, y_;
  82
  83 static unsigned clients_;
  84
  85 static CFMessagePortRef ashikase_;
  86 static bool cursor_;
  87
  88 static bool Ashikase(bool always) {
  89     if (!always && !cursor_)
  90         return false;
  91
  92     if (ashikase_ == NULL)
  93         ashikase_ = CFMessagePortCreateRemote(kCFAllocatorDefault, CFSTR("jp.ashikase.mousesupport"));
  94     if (ashikase_ != NULL)
  95         return true;
  96
  97     cursor_ = false;
  98     return false;
  99 }
 100
 101 static CFDataRef cfTrue_;
 102 static CFDataRef cfFalse_;
 103
 104 typedef struct {
 105     float x, y;
 106     int buttons;
 107     BOOL absolute;
 108 } MouseEvent;
 109
 110 static MouseEvent event_;
 111 static CFDataRef cfEvent_;
 112
 113 typedef enum {
 114     MouseMessageTypeEvent,
 115     MouseMessageTypeSetEnabled
 116 } MouseMessageType;
 117
 118 static void AshikaseSendEvent(float x, float y, int buttons = 0) {
 119     event_.x = x;
 120     event_.y = y;
 121     event_.buttons = buttons;
 122     event_.absolute = true;
 123
 124     CFMessagePortSendRequest(ashikase_, MouseMessageTypeEvent, cfEvent_, 0, 0, NULL, NULL);
 125 }
 126
 127 static void AshikaseSetEnabled(bool enabled, bool always) {
 128     if (!Ashikase(always))
 129         return;
 130
 131     CFMessagePortSendRequest(ashikase_, MouseMessageTypeSetEnabled, enabled ? cfTrue_ : cfFalse_, 0, 0, NULL, NULL);
 132
 133     if (enabled)
 134         AshikaseSendEvent(x_, y_);
 135 }
 136
 137 MSClassHook(SBAlertItemsController)
 138 MSClassHook(SBStatusBarController)
 139
 140 @class VNCAlertItem;
 141 static Class $VNCAlertItem;
 142
 143 static rfbNewClientAction action_ = RFB_CLIENT_ON_HOLD;
 144 static NSCondition *condition_;
 145 static NSLock *lock_;
 146
 147 static rfbClientPtr client_;
 148
 149 @interface VNCBridge : NSObject {
 150 }
 151
 152 + (void) askForConnection;
 153 + (void) removeStatusBarItem;
 154 + (void) registerClient;
 155
 156 @end
 157
 158 @implementation VNCBridge
 159
 160 + (void) askForConnection {
 161     [[$SBAlertItemsController sharedInstance] activateAlertItem:[[[$VNCAlertItem alloc] init] autorelease]];
 162 }
 163
 164 + (void) removeStatusBarItem {
 165     AshikaseSetEnabled(false, false);
 166     [[$SBStatusBarController sharedStatusBarController] removeStatusBarItem:@"Veency"];
 167 }
 168
 169 + (void) registerClient {
 170     ++clients_;
 171     AshikaseSetEnabled(true, false);
 172     [[$SBStatusBarController sharedStatusBarController] addStatusBarItem:@"Veency"];
 173 }
 174
 175 @end
 176
 177 MSInstanceMessage2(void, VNCAlertItem, alertSheet,buttonClicked, id, sheet, int, button) {
 178     [condition_ lock];
 179
 180     switch (button) {
 181         case 1:
 182             action_ = RFB_CLIENT_ACCEPT;
 183
 184             @synchronized (condition_) {
 185                 [VNCBridge registerClient];
 186             }
 187         break;
 188
 189         case 2:
 190             action_ = RFB_CLIENT_REFUSE;
 191         break;
 192     }
 193
 194     [condition_ signal];
 195     [condition_ unlock];
 196     [self dismiss];
 197 }
 198
 199 MSInstanceMessage2(void, VNCAlertItem, configure,requirePasscodeForActions, BOOL, configure, BOOL, require) {
 200     UIModalView *sheet([self alertSheet]);
 201     [sheet setDelegate:self];
 202     [sheet setTitle:@"Remote Access Request"];
 203     [sheet setBodyText:[NSString stringWithFormat:@"Accept connection from\n%s?\n\nVeency VNC Server\nby Jay Freeman (saurik)\nsaurik@saurik.com\nhttp://www.saurik.com/\n\nSet a VNC password in Settings!", client_->host]];
 204     [sheet addButtonWithTitle:@"Accept"];
 205     [sheet addButtonWithTitle:@"Reject"];
 206 }
 207
 208 MSInstanceMessage0(void, VNCAlertItem, performUnlockAction) {
 209     [[$SBAlertItemsController sharedInstance] activateAlertItem:self];
 210 }
 211
 212 static mach_port_t (*GSTakePurpleSystemEventPort)(void);
 213 static bool PurpleAllocated;
 214 static int Level_;
 215
 216 static void FixRecord(GSEventRecord *record) {
 217     if (Level_ < 1)
 218         memmove(&record->windowContextId, &record->windowContextId + 1, sizeof(*record) - (reinterpret_cast<uint8_t *>(&record->windowContextId + 1) - reinterpret_cast<uint8_t *>(record)) + record->size);
 219 }
 220
 221 static void VNCSettings() {
 222     NSDictionary *settings([NSDictionary dictionaryWithContentsOfFile:[NSString stringWithFormat:@"%@/Library/Preferences/com.saurik.Veency.plist", NSHomeDirectory()]]);
 223
 224     @synchronized (lock_) {
 225         for (NSValue *handler in handlers_)
 226             rfbUnregisterSecurityHandler(reinterpret_cast<rfbSecurityHandler *>([handler pointerValue]));
 227         [handlers_ removeAllObjects];
 228     }
 229
 230     @synchronized (condition_) {
 231         if (screen_ == NULL)
 232             return;
 233
 234         [reinterpret_cast<NSString *>(screen_->authPasswdData) release];
 235         screen_->authPasswdData = NULL;
 236
 237         if (settings != nil)
 238             if (NSString *password = [settings objectForKey:@"Password"])
 239                 if ([password length] != 0)
 240                     screen_->authPasswdData = [password retain];
 241
 242         NSNumber *cursor = [settings objectForKey:@"ShowCursor"];
 243         cursor_ = cursor == nil ? true : [cursor boolValue];
 244
 245         if (clients_ != 0)
 246             AshikaseSetEnabled(cursor_, true);
 247     }
 248 }
 249
 250 static void VNCNotifySettings(
 251     CFNotificationCenterRef center,
 252     void *observer,
 253     CFStringRef name,
 254     const void *object,
 255     CFDictionaryRef info
 256 ) {
 257     VNCSettings();
 258 }
 259
 260 static rfbBool VNCCheck(rfbClientPtr client, const char *data, int size) {
 261     @synchronized (condition_) {
 262         if (NSString *password = reinterpret_cast<NSString *>(screen_->authPasswdData)) {
 263             NSAutoreleasePool *pool([[NSAutoreleasePool alloc] init]);
 264             rfbEncryptBytes(client->authChallenge, const_cast<char *>([password UTF8String]));
 265             bool good(memcmp(client->authChallenge, data, size) == 0);
 266             [pool release];
 267             return good;
 268         } return TRUE;
 269     }
 270 }
 271
 272 static void VNCPointer(int buttons, int x, int y, rfbClientPtr client) {
 273     CGPoint location = {x, y};
 274
 275     if (Level_ == 2) {
 276         int t(x);
 277         x = height_ - 1 - y;
 278         y = t;
 279     }
 280
 281     x_ = x; y_ = y;
 282     int diff = buttons_ ^ buttons;
 283     bool twas((buttons_ & 0x1) != 0);
 284     bool tis((buttons & 0x1) != 0);
 285     buttons_ = buttons;
 286
 287     rfbDefaultPtrAddEvent(buttons, x, y, client);
 288
 289     if (Ashikase(false)) {
 290         AshikaseSendEvent(x, y, buttons);
 291         return;
 292     }
 293
 294     mach_port_t purple(0);
 295
 296     if ((diff & 0x10) != 0) {
 297         struct GSEventRecord record;
 298
 299         memset(&record, 0, sizeof(record));
 300
 301         record.type = (buttons & 0x4) != 0 ?
 302             GSEventTypeHeadsetButtonDown :
 303             GSEventTypeHeadsetButtonUp;
 304
 305         record.timestamp = GSCurrentEventTimestamp();
 306
 307         FixRecord(&record);
 308         GSSendSystemEvent(&record);
 309     }
 310
 311     if ((diff & 0x04) != 0) {
 312         struct GSEventRecord record;
 313
 314         memset(&record, 0, sizeof(record));
 315
 316         record.type = (buttons & 0x4) != 0 ?
 317             GSEventTypeMenuButtonDown :
 318             GSEventTypeMenuButtonUp;
 319
 320         record.timestamp = GSCurrentEventTimestamp();
 321
 322         FixRecord(&record);
 323         GSSendSystemEvent(&record);
 324     }
 325
 326     if ((diff & 0x02) != 0) {
 327         struct GSEventRecord record;
 328
 329         memset(&record, 0, sizeof(record));
 330
 331         record.type = (buttons & 0x2) != 0 ?
 332             GSEventTypeLockButtonDown :
 333             GSEventTypeLockButtonUp;
 334
 335         record.timestamp = GSCurrentEventTimestamp();
 336
 337         FixRecord(&record);
 338         GSSendSystemEvent(&record);
 339     }
 340
 341     if (twas != tis || tis) {
 342         struct {
 343             struct GSEventRecord record;
 344             struct {
 345                 struct GSEventRecordInfo info;
 346                 struct GSPathInfo path;
 347             } data;
 348         } event;
 349
 350         memset(&event, 0, sizeof(event));
 351
 352         event.record.type = GSEventTypeMouse;
 353         event.record.locationInWindow.x = x;
 354         event.record.locationInWindow.y = y;
 355         event.record.timestamp = GSCurrentEventTimestamp();
 356         event.record.size = sizeof(event.data);
 357
 358         event.data.info.handInfo.type = twas == tis ?
 359             GSMouseEventTypeDragged :
 360         tis ?
 361             GSMouseEventTypeDown :
 362             GSMouseEventTypeUp;
 363
 364         event.data.info.handInfo.x34 = 0x1;
 365         event.data.info.handInfo.x38 = tis ? 0x1 : 0x0;
 366
 367         event.data.info.pathPositions = 1;
 368
 369         event.data.path.x00 = 0x01;
 370         event.data.path.x01 = 0x02;
 371         event.data.path.x02 = tis ? 0x03 : 0x00;
 372         event.data.path.position = event.record.locationInWindow;
 373
 374         mach_port_t port(0);
 375
 376         if (CAWindowServer *server = [CAWindowServer serverIfRunning]) {
 377             NSArray *displays([server displays]);
 378             if (displays != nil && [displays count] != 0)
 379                 if (CAWindowServerDisplay *display = [displays objectAtIndex:0])
 380                     port = [display clientPortAtPosition:location];
 381         }
 382
 383         if (port == 0) {
 384             if (purple == 0)
 385                 purple = (*GSTakePurpleSystemEventPort)();
 386             port = purple;
 387         }
 388
 389         FixRecord(&event.record);
 390         GSSendEvent(&event.record, port);
 391     }
 392
 393     if (purple != 0 && PurpleAllocated)
 394         mach_port_deallocate(mach_task_self(), purple);
 395 }
 396
 397 static void VNCKeyboard(rfbBool down, rfbKeySym key, rfbClientPtr client) {
 398     if (!down)
 399         return;
 400
 401     switch (key) {
 402         case XK_Return: key = '\r'; break;
 403         case XK_BackSpace: key = 0x7f; break;
 404     }
 405
 406     if (key > 0xfff)
 407         return;
 408
 409     GSEventRef event(_GSCreateSyntheticKeyEvent(key, YES, YES));
 410     GSEventRecord *record(_GSEventGetGSEventRecord(event));
 411     record->type = GSEventTypeKeyDown;
 412
 413     mach_port_t port(0);
 414
 415     if (CAWindowServer *server = [CAWindowServer serverIfRunning]) {
 416         NSArray *displays([server displays]);
 417         if (displays != nil && [displays count] != 0)
 418             if (CAWindowServerDisplay *display = [displays objectAtIndex:0])
 419                 port = [display clientPortAtPosition:CGPointMake(x_, y_)];
 420     }
 421
 422     mach_port_t purple(0);
 423
 424     if (port == 0) {
 425         if (purple == 0)
 426             purple = (*GSTakePurpleSystemEventPort)();
 427         port = purple;
 428     }
 429
 430     if (port != 0)
 431         GSSendEvent(record, port);
 432
 433     if (purple != 0 && PurpleAllocated)
 434         mach_port_deallocate(mach_task_self(), purple);
 435
 436     CFRelease(event);
 437 }
 438
 439 static void VNCDisconnect(rfbClientPtr client) {
 440     @synchronized (condition_) {
 441         if (--clients_ == 0)
 442             [VNCBridge performSelectorOnMainThread:@selector(removeStatusBarItem) withObject:nil waitUntilDone:YES];
 443     }
 444 }
 445
 446 static rfbNewClientAction VNCClient(rfbClientPtr client) {
 447     @synchronized (condition_) {
 448         if (screen_->authPasswdData != NULL) {
 449             [VNCBridge performSelectorOnMainThread:@selector(registerClient) withObject:nil waitUntilDone:YES];
 450             client->clientGoneHook = &VNCDisconnect;
 451             return RFB_CLIENT_ACCEPT;
 452         }
 453     }
 454
 455     [condition_ lock];
 456     client_ = client;
 457     [VNCBridge performSelectorOnMainThread:@selector(askForConnection) withObject:nil waitUntilDone:NO];
 458     while (action_ == RFB_CLIENT_ON_HOLD)
 459         [condition_ wait];
 460     rfbNewClientAction action(action_);
 461     action_ = RFB_CLIENT_ON_HOLD;
 462     [condition_ unlock];
 463
 464     if (action == RFB_CLIENT_ACCEPT)
 465         client->clientGoneHook = &VNCDisconnect;
 466     return action;
 467 }
 468
 469 static void VNCSetup() {
 470     rfbLogEnable(false);
 471
 472     @synchronized (condition_) {
 473         int argc(1);
 474         char *arg0(strdup("VNCServer"));
 475         char *argv[] = {arg0, NULL};
 476         screen_ = rfbGetScreen(&argc, argv, width_, height_, BitsPerSample, 3, BytesPerPixel);
 477         free(arg0);
 478
 479         VNCSettings();
 480     }
 481
 482     screen_->desktopName = strdup([[[NSProcessInfo processInfo] hostName] UTF8String]);
 483
 484     screen_->alwaysShared = TRUE;
 485     screen_->handleEventsEagerly = TRUE;
 486     screen_->deferUpdateTime = 1000 / 25;
 487
 488     screen_->serverFormat.redShift = BitsPerSample * 2;
 489     screen_->serverFormat.greenShift = BitsPerSample * 1;
 490     screen_->serverFormat.blueShift = BitsPerSample * 0;
 491
 492     buffer_ = CoreSurfaceBufferCreate((CFDictionaryRef) [NSDictionary dictionaryWithObjectsAndKeys:
 493         @"PurpleEDRAM", kCoreSurfaceBufferMemoryRegion,
 494         [NSNumber numberWithBool:YES], kCoreSurfaceBufferGlobal,
 495         [NSNumber numberWithInt:(width_ * BytesPerPixel)], kCoreSurfaceBufferPitch,
 496         [NSNumber numberWithInt:width_], kCoreSurfaceBufferWidth,
 497         [NSNumber numberWithInt:height_], kCoreSurfaceBufferHeight,
 498         [NSNumber numberWithInt:'BGRA'], kCoreSurfaceBufferPixelFormat,
 499         [NSNumber numberWithInt:(width_ * height_ * BytesPerPixel)], kCoreSurfaceBufferAllocSize,
 500     nil]);
 501
 502     //screen_->frameBuffer = reinterpret_cast<char *>(mmap(NULL, sizeof(rfbPixel) * width_ * height_, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_NOCACHE, VM_FLAGS_PURGABLE, 0));
 503
 504     CoreSurfaceBufferLock(buffer_, 3);
 505     screen_->frameBuffer = reinterpret_cast<char *>(CoreSurfaceBufferGetBaseAddress(buffer_));
 506     CoreSurfaceBufferUnlock(buffer_);
 507
 508     screen_->kbdAddEvent = &VNCKeyboard;
 509     screen_->ptrAddEvent = &VNCPointer;
 510
 511     screen_->newClientHook = &VNCClient;
 512     screen_->passwordCheck = &VNCCheck;
 513
 514     screen_->cursor = NULL;
 515 }
 516
 517 static void VNCEnabled() {
 518     [lock_ lock];
 519
 520     bool enabled(true);
 521     if (NSDictionary *settings = [NSDictionary dictionaryWithContentsOfFile:[NSString stringWithFormat:@"%@/Library/Preferences/com.saurik.Veency.plist", NSHomeDirectory()]])
 522         if (NSNumber *number = [settings objectForKey:@"Enabled"])
 523             enabled = [number boolValue];
 524
 525     if (enabled != running_)
 526         if (enabled) {
 527             running_ = true;
 528             screen_->socketState = RFB_SOCKET_INIT;
 529             rfbInitServer(screen_);
 530             rfbRunEventLoop(screen_, -1, true);
 531         } else {
 532             rfbShutdownServer(screen_, true);
 533             running_ = false;
 534         }
 535
 536     [lock_ unlock];
 537 }
 538
 539 static void VNCNotifyEnabled(
 540     CFNotificationCenterRef center,
 541     void *observer,
 542     CFStringRef name,
 543     const void *object,
 544     CFDictionaryRef info
 545 ) {
 546     VNCEnabled();
 547 }
 548
 549 MSHook(kern_return_t, IOMobileFramebufferSwapSetLayer,
 550     IOMobileFramebufferRef fb,
 551     int layer,
 552     CoreSurfaceBufferRef buffer,
 553     CGRect bounds,
 554     CGRect frame,
 555     int flags
 556 ) {
 557     if (_unlikely(screen_ == NULL)) {
 558         CGSize size;
 559         IOMobileFramebufferGetDisplaySize(fb, &size);
 560
 561         width_ = size.width;
 562         height_ = size.height;
 563
 564         NSAutoreleasePool *pool([[NSAutoreleasePool alloc] init]);
 565         VNCSetup();
 566         VNCEnabled();
 567         [pool release];
 568     } else if (_unlikely(clients_ != 0)) {
 569         if (buffer == NULL) {
 570             //CoreSurfaceBufferLock(buffer_, 3);
 571             memset(screen_->frameBuffer, 0, sizeof(rfbPixel) * width_ * height_);
 572             //CoreSurfaceBufferUnlock(buffer_);
 573         } else {
 574             //CoreSurfaceBufferLock(buffer_, 3);
 575             //CoreSurfaceBufferLock(buffer, 2);
 576
 577             //rfbPixel *data(reinterpret_cast<rfbPixel *>(CoreSurfaceBufferGetBaseAddress(buffer)));
 578
 579             /*rfbPixel corner(data[0]);
 580             data[0] = 0;
 581             data[0] = corner;*/
 582
 583             CoreSurfaceAcceleratorTransferSurface(accelerator_, buffer, buffer_, options_);
 584
 585             //CoreSurfaceBufferUnlock(buffer);
 586             //CoreSurfaceBufferUnlock(buffer_);
 587         }
 588
 589         //CoreSurfaceBufferFlushProcessorCaches(buffer);
 590         rfbMarkRectAsModified(screen_, 0, 0, width_, height_);
 591     }
 592
 593     return _IOMobileFramebufferSwapSetLayer(fb, layer, buffer, bounds, frame, flags);
 594 }
 595
 596 MSHook(void, rfbRegisterSecurityHandler, rfbSecurityHandler *handler) {
 597     NSAutoreleasePool *pool([[NSAutoreleasePool alloc] init]);
 598
 599     @synchronized (lock_) {
 600         [handlers_ addObject:[NSValue valueWithPointer:handler]];
 601         _rfbRegisterSecurityHandler(handler);
 602     }
 603
 604     [pool release];
 605 }
 606
 607 MSInitialize {
 608     NSAutoreleasePool *pool([[NSAutoreleasePool alloc] init]);
 609
 610     MSHookSymbol(GSTakePurpleSystemEventPort, "GSGetPurpleSystemEventPort");
 611     if (GSTakePurpleSystemEventPort == NULL) {
 612         MSHookSymbol(GSTakePurpleSystemEventPort, "GSCopyPurpleSystemEventPort");
 613         PurpleAllocated = true;
 614     }
 615
 616     if (dlsym(RTLD_DEFAULT, "GSKeyboardCreate") != NULL)
 617         Level_ = 2;
 618     else if (dlsym(RTLD_DEFAULT, "GSEventGetWindowContextId") != NULL)
 619         Level_ = 1;
 620     else
 621         Level_ = 0;
 622
 623     MSHookFunction(&IOMobileFramebufferSwapSetLayer, MSHake(IOMobileFramebufferSwapSetLayer));
 624     MSHookFunction(&rfbRegisterSecurityHandler, MSHake(rfbRegisterSecurityHandler));
 625
 626     $VNCAlertItem = objc_allocateClassPair(objc_getClass("SBAlertItem"), "VNCAlertItem", 0);
 627     MSAddMessage2(VNCAlertItem, "v@:@i", alertSheet,buttonClicked);
 628     MSAddMessage2(VNCAlertItem, "v@:cc", configure,requirePasscodeForActions);
 629     MSAddMessage0(VNCAlertItem, "v@:", performUnlockAction);
 630     objc_registerClassPair($VNCAlertItem);
 631
 632     CFNotificationCenterAddObserver(
 633         CFNotificationCenterGetDarwinNotifyCenter(),
 634         NULL, &VNCNotifyEnabled, CFSTR("com.saurik.Veency-Enabled"), NULL, 0
 635     );
 636
 637     CFNotificationCenterAddObserver(
 638         CFNotificationCenterGetDarwinNotifyCenter(),
 639         NULL, &VNCNotifySettings, CFSTR("com.saurik.Veency-Settings"), NULL, 0
 640     );
 641
 642     condition_ = [[NSCondition alloc] init];
 643     lock_ = [[NSLock alloc] init];
 644     handlers_ = [[NSMutableSet alloc] init];
 645
 646     bool value;
 647
 648     value = true;
 649     cfTrue_ = CFDataCreate(kCFAllocatorDefault, reinterpret_cast<UInt8 *>(&value), sizeof(value));
 650
 651     value = false;
 652     cfFalse_ = CFDataCreate(kCFAllocatorDefault, reinterpret_cast<UInt8 *>(&value), sizeof(value));
 653
 654     cfEvent_ = CFDataCreateWithBytesNoCopy(kCFAllocatorDefault, reinterpret_cast<UInt8 *>(&event_), sizeof(event_), kCFAllocatorNull);
 655
 656     CoreSurfaceAcceleratorCreate(NULL, NULL, &accelerator_);
 657
 658     options_ = (CFDictionaryRef) [[NSDictionary dictionaryWithObjectsAndKeys:
 659     nil] retain];
 660
 661     [pool release];
 662 }