Tweak.mm

   1 /* Cyrker - Remove Execution Server and Disassembler
   2  * Copyright (C) 2009  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #include <substrate.h>
  41
  42 #include "sig/parse.hpp"
  43 #include "sig/ffi_type.hpp"
  44
  45 #include <apr-1/apr_pools.h>
  46 #include <apr-1/apr_strings.h>
  47
  48 #include <unistd.h>
  49
  50 #include <CoreFoundation/CoreFoundation.h>
  51 #include <CoreFoundation/CFLogUtilities.h>
  52
  53 #include <CFNetwork/CFNetwork.h>
  54 #include <Foundation/Foundation.h>
  55
  56 #include <JavaScriptCore/JSBase.h>
  57 #include <JavaScriptCore/JSValueRef.h>
  58 #include <JavaScriptCore/JSObjectRef.h>
  59 #include <JavaScriptCore/JSContextRef.h>
  60 #include <JavaScriptCore/JSStringRef.h>
  61 #include <JavaScriptCore/JSStringRefCF.h>
  62
  63 #include <WebKit/WebScriptObject.h>
  64
  65 #include <sys/types.h>
  66 #include <sys/socket.h>
  67 #include <netinet/in.h>
  68
  69 #undef _assert
  70 #undef _trace
  71
  72 /* XXX: bad _assert */
  73 #define _assert(test) do { \
  74     if ((test)) break; \
  75     CFLog(kCFLogLevelNotice, CFSTR("_assert(%s):%u"), #test, __LINE__); \
  76     throw; \
  77 } while (false)
  78
  79 #define _trace() do { \
  80     CFLog(kCFLogLevelNotice, CFSTR("_trace():%u"), __LINE__); \
  81 } while (false)
  82
  83 static JSContextRef Context_;
  84
  85 static JSClassRef ffi_;
  86 static JSClassRef joc_;
  87
  88 static JSObjectRef Array_;
  89
  90 static JSStringRef name_;
  91 static JSStringRef message_;
  92 static JSStringRef length_;
  93
  94 static Class NSCFBoolean_;
  95
  96 struct Client {
  97     CFHTTPMessageRef message_;
  98     CFSocketRef socket_;
  99 };
 100
 101 @interface NSObject (Cyrver)
 102 - (NSString *) cy$toJSON;
 103 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context;
 104 @end
 105
 106 @implementation NSObject (Cyrver)
 107
 108 - (NSString *) cy$toJSON {
 109     return [self description];
 110 }
 111
 112 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context {
 113     return JSObjectMake(context, joc_, [self retain]);
 114 }
 115
 116 @end
 117
 118 @implementation WebUndefined (Cyrver)
 119
 120 - (NSString *) cy$toJSON {
 121     return @"undefined";
 122 }
 123
 124 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context {
 125     return JSValueMakeUndefined(context);
 126 }
 127
 128 @end
 129
 130 @implementation NSArray (Cyrver)
 131
 132 - (NSString *) cy$toJSON {
 133     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 134     [json appendString:@"["];
 135
 136     bool comma(false);
 137     for (id object in self) {
 138         if (comma)
 139             [json appendString:@","];
 140         else
 141             comma = true;
 142         [json appendString:[object cy$toJSON]];
 143     }
 144
 145     [json appendString:@"]"];
 146     return json;
 147 }
 148
 149 @end
 150
 151 @implementation NSDictionary (Cyrver)
 152
 153 - (NSString *) cy$toJSON {
 154     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 155     [json appendString:@"({"];
 156
 157     bool comma(false);
 158     for (id key in self) {
 159         if (comma)
 160             [json appendString:@","];
 161         else
 162             comma = true;
 163         [json appendString:[key cy$toJSON]];
 164         [json appendString:@":"];
 165         NSObject *object([self objectForKey:key]);
 166         [json appendString:[object cy$toJSON]];
 167     }
 168
 169     [json appendString:@"})"];
 170     return json;
 171 }
 172
 173 @end
 174
 175 @implementation NSNumber (Cyrver)
 176
 177 - (NSString *) cy$toJSON {
 178     return [self class] != NSCFBoolean_ ? [self stringValue] : [self boolValue] ? @"true" : @"false";
 179 }
 180
 181 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context {
 182     return [self class] != NSCFBoolean_ ? JSValueMakeNumber(context, [self doubleValue]) : JSValueMakeBoolean(context, [self boolValue]);
 183 }
 184
 185 @end
 186
 187 @implementation NSString (Cyrver)
 188
 189 - (NSString *) cy$toJSON {
 190     CFMutableStringRef json(CFStringCreateMutableCopy(kCFAllocatorDefault, 0, (CFStringRef) self));
 191
 192     CFStringFindAndReplace(json, CFSTR("\\"), CFSTR("\\\\"), CFRangeMake(0, CFStringGetLength(json)), 0);
 193     CFStringFindAndReplace(json, CFSTR("\""), CFSTR("\\\""), CFRangeMake(0, CFStringGetLength(json)), 0);
 194     CFStringFindAndReplace(json, CFSTR("\t"), CFSTR("\\t"), CFRangeMake(0, CFStringGetLength(json)), 0);
 195     CFStringFindAndReplace(json, CFSTR("\r"), CFSTR("\\r"), CFRangeMake(0, CFStringGetLength(json)), 0);
 196     CFStringFindAndReplace(json, CFSTR("\n"), CFSTR("\\n"), CFRangeMake(0, CFStringGetLength(json)), 0);
 197
 198     CFStringInsert(json, 0, CFSTR("\""));
 199     CFStringAppend(json, CFSTR("\""));
 200
 201     return [reinterpret_cast<const NSString *>(json) autorelease];
 202 }
 203
 204 @end
 205
 206 @interface CY$JSObject : NSDictionary {
 207     JSObjectRef object_;
 208     JSContextRef context_;
 209 }
 210
 211 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 212
 213 - (NSUInteger) count;
 214 - (id) objectForKey:(id)key;
 215 - (NSEnumerator *) keyEnumerator;
 216 - (void) setObject:(id)object forKey:(id)key;
 217 - (void) removeObjectForKey:(id)key;
 218
 219 @end
 220
 221 @interface CY$JSArray : NSArray {
 222     JSObjectRef object_;
 223     JSContextRef context_;
 224 }
 225
 226 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 227
 228 - (NSUInteger) count;
 229 - (id) objectAtIndex:(NSUInteger)index;
 230
 231 @end
 232
 233 JSContextRef JSGetContext() {
 234     return Context_;
 235 }
 236
 237 void CYThrow(JSContextRef context, JSValueRef value);
 238
 239 id JSObjectToNSObject(JSContextRef context, JSObjectRef object) {
 240     if (JSValueIsObjectOfClass(context, object, joc_))
 241         return reinterpret_cast<id>(JSObjectGetPrivate(object));
 242     JSValueRef exception(NULL);
 243     bool array(JSValueIsInstanceOfConstructor(context, object, Array_, &exception));
 244     CYThrow(context, exception);
 245     if (array)
 246         return [[[CY$JSArray alloc] initWithJSObject:object inContext:context] autorelease];
 247     return [[[CY$JSObject alloc] initWithJSObject:object inContext:context] autorelease];
 248 }
 249
 250 CFStringRef CYCopyCFString(JSStringRef value) {
 251     return JSStringCopyCFString(kCFAllocatorDefault, value);
 252 }
 253
 254 CFStringRef CYCopyCFString(JSContextRef context, JSValueRef value) {
 255     JSValueRef exception(NULL);
 256     JSStringRef string(JSValueToStringCopy(context, value, &exception));
 257     CYThrow(context, exception);
 258     CFStringRef object(CYCopyCFString(string));
 259     JSStringRelease(string);
 260     return object;
 261 }
 262
 263 NSString *CYCastNSString(JSStringRef value) {
 264     return [reinterpret_cast<const NSString *>(CYCopyCFString(value)) autorelease];
 265 }
 266
 267 CFTypeRef CYCopyCFType(JSContextRef context, JSValueRef value) {
 268     JSType type(JSValueGetType(context, value));
 269
 270     switch (type) {
 271         case kJSTypeUndefined:
 272             return CFRetain([WebUndefined undefined]);
 273         break;
 274
 275         case kJSTypeNull:
 276             return nil;
 277         break;
 278
 279         case kJSTypeBoolean:
 280             return CFRetain(JSValueToBoolean(context, value) ? kCFBooleanTrue : kCFBooleanFalse);
 281         break;
 282
 283         case kJSTypeNumber: {
 284             JSValueRef exception(NULL);
 285             double number(JSValueToNumber(context, value, &exception));
 286             CYThrow(context, exception);
 287             return CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &number);
 288         } break;
 289
 290         case kJSTypeString:
 291             return CYCopyCFString(context, value);
 292         break;
 293
 294         case kJSTypeObject:
 295             return CFRetain((CFTypeRef) JSObjectToNSObject(context, (JSObjectRef) value));
 296         break;
 297
 298         default:
 299             _assert(false);
 300         break;
 301     }
 302 }
 303
 304 NSArray *CYCastNSArray(JSPropertyNameArrayRef names) {
 305     size_t size(JSPropertyNameArrayGetCount(names));
 306     NSMutableArray *array([NSMutableArray arrayWithCapacity:size]);
 307     for (size_t index(0); index != size; ++index)
 308         [array addObject:CYCastNSString(JSPropertyNameArrayGetNameAtIndex(names, index))];
 309     return array;
 310 }
 311
 312 id CYCastNSObject(JSContextRef context, JSValueRef value) {
 313     const NSObject *object(reinterpret_cast<const NSObject *>(CYCopyCFType(context, value)));
 314     return object == nil ? nil : [object autorelease];
 315 }
 316
 317 void CYThrow(JSContextRef context, JSValueRef value) {
 318     if (value == NULL)
 319         return;
 320     @throw CYCastNSObject(context, value);
 321 }
 322
 323 JSValueRef CYCastJSValue(JSContextRef context, id value) {
 324     return value == nil ? JSValueMakeNull(context) : [value cy$JSValueInContext:context];
 325 }
 326
 327 JSStringRef CYCopyJSString(id value) {
 328     return JSStringCreateWithCFString(reinterpret_cast<CFStringRef>([value description]));
 329 }
 330
 331 JSStringRef CYCopyJSString(const char *value) {
 332     return JSStringCreateWithUTF8CString(value);
 333 }
 334
 335 @implementation CY$JSObject
 336
 337 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context {
 338     if ((self = [super init]) != nil) {
 339         object_ = object;
 340         context_ = context;
 341     } return self;
 342 }
 343
 344 - (NSUInteger) count {
 345     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context_, object_));
 346     size_t size(JSPropertyNameArrayGetCount(names));
 347     JSPropertyNameArrayRelease(names);
 348     return size;
 349 }
 350
 351 - (id) objectForKey:(id)key {
 352     JSValueRef exception(NULL);
 353     JSStringRef string(CYCopyJSString(key));
 354     JSValueRef value(JSObjectGetProperty(context_, object_, string, &exception));
 355     JSStringRelease(string);
 356     CYThrow(context_, exception);
 357     return CYCastNSObject(context_, value);
 358 }
 359
 360 - (NSEnumerator *) keyEnumerator {
 361     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context_, object_));
 362     NSEnumerator *enumerator([CYCastNSArray(names) objectEnumerator]);
 363     JSPropertyNameArrayRelease(names);
 364     return enumerator;
 365 }
 366
 367 - (void) setObject:(id)object forKey:(id)key {
 368     JSValueRef exception(NULL);
 369     JSStringRef string(CYCopyJSString(key));
 370     JSObjectSetProperty(context_, object_, string, CYCastJSValue(context_, object), kJSPropertyAttributeNone, &exception);
 371     JSStringRelease(string);
 372     CYThrow(context_, exception);
 373 }
 374
 375 - (void) removeObjectForKey:(id)key {
 376     JSValueRef exception(NULL);
 377     JSStringRef string(CYCopyJSString(key));
 378     // XXX: this returns a bool
 379     JSObjectDeleteProperty(context_, object_, string, &exception);
 380     JSStringRelease(string);
 381     CYThrow(context_, exception);
 382 }
 383
 384 @end
 385
 386 @implementation CY$JSArray
 387
 388 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context {
 389     if ((self = [super init]) != nil) {
 390         object_ = object;
 391         context_ = context;
 392     } return self;
 393 }
 394
 395 - (NSUInteger) count {
 396     JSValueRef exception(NULL);
 397     JSValueRef value(JSObjectGetProperty(context_, object_, length_, &exception));
 398     CYThrow(context_, exception);
 399     double number(JSValueToNumber(context_, value, &exception));
 400     CYThrow(context_, exception);
 401     return number;
 402 }
 403
 404 - (id) objectAtIndex:(NSUInteger)index {
 405     JSValueRef exception(NULL);
 406     JSValueRef value(JSObjectGetPropertyAtIndex(context_, object_, index, &exception));
 407     CYThrow(context_, exception);
 408     id object(CYCastNSObject(context_, value));
 409     return object == nil ? [NSNull null] : object;
 410 }
 411
 412 @end
 413
 414 CFStringRef JSValueToJSONCopy(JSContextRef context, JSValueRef value) {
 415     id object(CYCastNSObject(context, value));
 416     return reinterpret_cast<CFStringRef>([(object == nil ? @"null" : [object cy$toJSON]) retain]);
 417 }
 418
 419 static void OnData(CFSocketRef socket, CFSocketCallBackType type, CFDataRef address, const void *value, void *info) {
 420     switch (type) {
 421         case kCFSocketDataCallBack:
 422             CFDataRef data(reinterpret_cast<CFDataRef>(value));
 423             Client *client(reinterpret_cast<Client *>(info));
 424
 425             if (client->message_ == NULL)
 426                 client->message_ = CFHTTPMessageCreateEmpty(kCFAllocatorDefault, TRUE);
 427
 428             if (!CFHTTPMessageAppendBytes(client->message_, CFDataGetBytePtr(data), CFDataGetLength(data)))
 429                 CFLog(kCFLogLevelError, CFSTR("CFHTTPMessageAppendBytes()"));
 430             else if (CFHTTPMessageIsHeaderComplete(client->message_)) {
 431                 CFURLRef url(CFHTTPMessageCopyRequestURL(client->message_));
 432                 Boolean absolute;
 433                 CFStringRef path(CFURLCopyStrictPath(url, &absolute));
 434                 CFRelease(client->message_);
 435
 436                 CFStringRef code(CFURLCreateStringByReplacingPercentEscapes(kCFAllocatorDefault, path, CFSTR("")));
 437                 CFRelease(path);
 438
 439                 JSStringRef script(JSStringCreateWithCFString(code));
 440                 CFRelease(code);
 441
 442                 JSValueRef result(JSEvaluateScript(JSGetContext(), script, NULL, NULL, 0, NULL));
 443                 JSStringRelease(script);
 444
 445                 CFHTTPMessageRef response(CFHTTPMessageCreateResponse(kCFAllocatorDefault, 200, NULL, kCFHTTPVersion1_1));
 446                 CFHTTPMessageSetHeaderFieldValue(response, CFSTR("Content-Type"), CFSTR("application/json; charset=utf-8"));
 447
 448                 CFStringRef json(JSValueToJSONCopy(JSGetContext(), result));
 449                 CFDataRef body(CFStringCreateExternalRepresentation(kCFAllocatorDefault, json, kCFStringEncodingUTF8, NULL));
 450                 CFRelease(json);
 451
 452                 CFStringRef length(CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("%u"), CFDataGetLength(body)));
 453                 CFHTTPMessageSetHeaderFieldValue(response, CFSTR("Content-Length"), length);
 454                 CFRelease(length);
 455
 456                 CFHTTPMessageSetBody(response, body);
 457                 CFRelease(body);
 458
 459                 CFDataRef serialized(CFHTTPMessageCopySerializedMessage(response));
 460                 CFRelease(response);
 461
 462                 CFSocketSendData(socket, NULL, serialized, 0);
 463                 CFRelease(serialized);
 464
 465                 CFRelease(url);
 466             }
 467         break;
 468     }
 469 }
 470
 471 static void OnAccept(CFSocketRef socket, CFSocketCallBackType type, CFDataRef address, const void *value, void *info) {
 472     switch (type) {
 473         case kCFSocketAcceptCallBack:
 474             Client *client(new Client());
 475
 476             client->message_ = NULL;
 477
 478             CFSocketContext context;
 479             context.version = 0;
 480             context.info = client;
 481             context.retain = NULL;
 482             context.release = NULL;
 483             context.copyDescription = NULL;
 484
 485             client->socket_ = CFSocketCreateWithNative(kCFAllocatorDefault, *reinterpret_cast<const CFSocketNativeHandle *>(value), kCFSocketDataCallBack, &OnData, &context);
 486
 487             CFRunLoopAddSource(CFRunLoopGetCurrent(), CFSocketCreateRunLoopSource(kCFAllocatorDefault, client->socket_, 0), kCFRunLoopDefaultMode);
 488         break;
 489     }
 490 }
 491
 492 static JSValueRef joc_getProperty(JSContextRef context, JSObjectRef object, JSStringRef propertyName, JSValueRef *exception) {
 493     return NULL;
 494 }
 495
 496 typedef id jocData;
 497
 498 static void joc_finalize(JSObjectRef object) {
 499     id data(reinterpret_cast<jocData>(JSObjectGetPrivate(object)));
 500     [data release];
 501 }
 502
 503 static JSValueRef obc_getProperty(JSContextRef context, JSObjectRef object, JSStringRef propertyName, JSValueRef *exception) {
 504     NSString *name([(NSString *) JSStringCopyCFString(kCFAllocatorDefault, propertyName) autorelease]);
 505     if (Class _class = NSClassFromString(name))
 506         return JSObjectMake(context, joc_, [_class retain]);
 507     return NULL;
 508 }
 509
 510 void CYSetProperty(JSContextRef context, JSObjectRef object, const char *name, JSValueRef value) {
 511     JSValueRef exception(NULL);
 512     JSStringRef string(CYCopyJSString(name));
 513     JSObjectSetProperty(context, object, string, value, kJSPropertyAttributeNone, &exception);
 514     JSStringRelease(string);
 515     CYThrow(context, exception);
 516 }
 517
 518 struct ffiData {
 519     apr_pool_t *pool_;
 520     void (*function_)();
 521     const char *type_;
 522     sig::Signature signature_;
 523     ffi_cif cif_;
 524 };
 525
 526 void CYToFFI(apr_pool_t *pool, JSContextRef context, JSValueRef *exception, sig::Type *type, void *data, JSValueRef value) {
 527     switch (type->primitive) {
 528         case sig::boolean_P:
 529             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 530         break;
 531
 532 #define CYToFFI_(primitive, native) \
 533         case sig::primitive ## _P: { \
 534             double number(JSValueToNumber(context, value, exception)); \
 535             if (exception == NULL) \
 536                 *reinterpret_cast<native *>(data) = number; \
 537         } break;
 538
 539         CYToFFI_(uchar, unsigned char)
 540         CYToFFI_(char, char)
 541         CYToFFI_(ushort, unsigned short)
 542         CYToFFI_(short, short)
 543         CYToFFI_(ulong, unsigned long)
 544         CYToFFI_(long, long)
 545         CYToFFI_(uint, unsigned int)
 546         CYToFFI_(int, int)
 547         CYToFFI_(ulonglong, unsigned long long)
 548         CYToFFI_(longlong, long long)
 549         CYToFFI_(float, float)
 550         CYToFFI_(double, double)
 551
 552         case sig::object_P:
 553         case sig::typename_P:
 554         case sig::selector_P:
 555         case sig::pointer_P:
 556             goto fail;
 557
 558         case sig::string_P: {
 559             JSStringRef string(JSValueToStringCopy(context, value, exception));
 560             if (exception != NULL) {
 561                 size_t size(JSStringGetMaximumUTF8CStringSize(string));
 562                 char *utf8(reinterpret_cast<char *>(apr_palloc(pool, size)));
 563                 JSStringGetUTF8CString(string, utf8, size);
 564                 JSStringRelease(string);
 565                 *reinterpret_cast<char **>(data) = utf8;
 566             }
 567         } break;
 568
 569         case sig::struct_P:
 570             goto fail;
 571
 572         case sig::void_P:
 573         break;
 574
 575         default: fail:
 576             NSLog(@"CYToFFI(%c)\n", type->primitive);
 577             _assert(false);
 578     }
 579 }
 580
 581 JSValueRef CYFromFFI(apr_pool_t *pool, JSContextRef context, JSValueRef *exception, sig::Type *type, void *data) {
 582     JSValueRef value;
 583
 584     switch (type->primitive) {
 585         case sig::boolean_P:
 586             value = JSValueMakeBoolean(context, *reinterpret_cast<bool *>(data));
 587         break;
 588
 589 #define CYFromFFI_(primitive, native) \
 590         case sig::primitive ## _P: \
 591             value = JSValueMakeNumber(context, *reinterpret_cast<native *>(data)); \
 592         break;
 593
 594         CYFromFFI_(uchar, unsigned char)
 595         CYFromFFI_(char, char)
 596         CYFromFFI_(ushort, unsigned short)
 597         CYFromFFI_(short, short)
 598         CYFromFFI_(ulong, unsigned long)
 599         CYFromFFI_(long, long)
 600         CYFromFFI_(uint, unsigned int)
 601         CYFromFFI_(int, int)
 602         CYFromFFI_(ulonglong, unsigned long long)
 603         CYFromFFI_(longlong, long long)
 604         CYFromFFI_(float, float)
 605         CYFromFFI_(double, double)
 606
 607         case sig::object_P:
 608         case sig::typename_P: {
 609             value = CYCastJSValue(context, *reinterpret_cast<id *>(data));
 610         } break;
 611
 612         case sig::selector_P:
 613         case sig::pointer_P:
 614             goto fail;
 615
 616         case sig::string_P: {
 617             char *utf8(*reinterpret_cast<char **>(data));
 618             JSStringRef string(JSStringCreateWithUTF8CString(utf8));
 619             value = JSValueMakeString(context, string);
 620             JSStringRelease(string);
 621         } break;
 622
 623         case sig::struct_P:
 624             goto fail;
 625
 626         case sig::void_P:
 627             value = NULL;
 628         break;
 629
 630         default: fail:
 631             NSLog(@"CYFromFFI(%c)\n", type->primitive);
 632             _assert(false);
 633     }
 634
 635     return value;
 636 }
 637
 638 static JSValueRef ffi_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
 639     ffiData *data(reinterpret_cast<ffiData *>(JSObjectGetPrivate(object)));
 640
 641     if (count != data->signature_.count - 1)
 642         _assert(false);
 643
 644     JSValueRef result(NULL);
 645
 646     apr_pool_t *pool;
 647     apr_pool_create(&pool, NULL);
 648
 649     void *values[count];
 650
 651     for (unsigned index(0); index != count; ++index) {
 652         sig::Element *element(&data->signature_.elements[index + 1]);
 653         values[index] = apr_palloc(pool, data->cif_.arg_types[index]->size);
 654         CYToFFI(pool, context, exception, element->type, values[index], arguments[index]);
 655         if (*exception != NULL)
 656             goto error;
 657     }
 658
 659     uint8_t value[data->cif_.rtype->size];
 660
 661     @try {
 662         ffi_call(&data->cif_, data->function_, value, values);
 663     } @catch (id error) {
 664         _assert(false);
 665     }
 666
 667     result = CYFromFFI(pool, context, exception, data->signature_.elements[0].type, value);
 668
 669   error:
 670     apr_pool_destroy(pool);
 671     return result;
 672 }
 673
 674 static void ffi_finalize(JSObjectRef object) {
 675     ffiData *data(reinterpret_cast<ffiData *>(JSObjectGetPrivate(object)));
 676     apr_pool_destroy(data->pool_);
 677 }
 678
 679 void CYSetFunction(JSContextRef context, JSObjectRef object, const char *name, void (*function)(), const char *type) {
 680     apr_pool_t *pool;
 681     apr_pool_create(&pool, NULL);
 682
 683     ffiData *data(reinterpret_cast<ffiData *>(apr_palloc(pool, sizeof(ffiData))));
 684
 685     data->pool_ = pool;
 686     data->function_ = function;
 687     data->type_ = apr_pstrdup(pool, type);
 688
 689     sig::Parse(pool, &data->signature_, type);
 690     sig::sig_ffi_cif(pool, &sig::sig_objc_ffi_type,  &data->signature_, &data->cif_);
 691
 692     JSObjectRef value(JSObjectMake(context, ffi_, data));
 693     CYSetProperty(context, object, name, value);
 694 }
 695
 696 MSInitialize {
 697     apr_initialize();
 698
 699     NSAutoreleasePool *pool([[NSAutoreleasePool alloc] init]);
 700
 701     NSCFBoolean_ = objc_getClass("NSCFBoolean");
 702
 703     pid_t pid(getpid());
 704
 705     struct sockaddr_in address;
 706     address.sin_len = sizeof(address);
 707     address.sin_family = AF_INET;
 708     address.sin_addr.s_addr = INADDR_ANY;
 709     address.sin_port = htons(10000 + pid);
 710
 711     CFDataRef data(CFDataCreate(kCFAllocatorDefault, reinterpret_cast<UInt8 *>(&address), sizeof(address)));
 712
 713     CFSocketSignature signature;
 714     signature.protocolFamily = AF_INET;
 715     signature.socketType = SOCK_STREAM;
 716     signature.protocol = IPPROTO_TCP;
 717     signature.address = data;
 718
 719     CFSocketRef socket(CFSocketCreateWithSocketSignature(kCFAllocatorDefault, &signature, kCFSocketAcceptCallBack, &OnAccept, NULL));
 720     CFRunLoopAddSource(CFRunLoopGetCurrent(), CFSocketCreateRunLoopSource(kCFAllocatorDefault, socket, 0), kCFRunLoopDefaultMode);
 721
 722     JSClassDefinition definition;
 723
 724     definition = kJSClassDefinitionEmpty;
 725     definition.getProperty = &obc_getProperty;
 726     JSClassRef obc(JSClassCreate(&definition));
 727
 728     definition = kJSClassDefinitionEmpty;
 729     definition.callAsFunction = &ffi_callAsFunction;
 730     definition.finalize = &ffi_finalize;
 731     ffi_ = JSClassCreate(&definition);
 732
 733     definition = kJSClassDefinitionEmpty;
 734     definition.getProperty = &joc_getProperty;
 735     definition.finalize = &joc_finalize;
 736     joc_ = JSClassCreate(&definition);
 737
 738     JSContextRef context(JSGlobalContextCreate(obc));
 739     Context_ = context;
 740
 741     JSObjectRef global(JSContextGetGlobalObject(context));
 742
 743     CYSetFunction(context, global, "objc_getClass", reinterpret_cast<void (*)()>(&objc_getClass), "#*");
 744
 745     name_ = JSStringCreateWithUTF8CString("name");
 746     message_ = JSStringCreateWithUTF8CString("message");
 747     length_ = JSStringCreateWithUTF8CString("length");
 748
 749     JSStringRef name(JSStringCreateWithUTF8CString("Array"));
 750     JSValueRef exception(NULL);
 751     JSValueRef value(JSObjectGetProperty(JSGetContext(), global, name, &exception));
 752     CYThrow(context, exception);
 753     JSStringRelease(name);
 754     Array_ = JSValueToObject(JSGetContext(), value, &exception);
 755     CYThrow(context, exception);
 756
 757     [pool release];
 758 }