FLEXNetworkLib to SKFLEXNetworkLib

Summary:
rename FLEXNetworkLib to SKFLEXNetworkLib so it doesnt clash with Stock FLEX if embedded in the app too

also 'fix' 3 warnings by adding explicit casts

Reviewed By: lblasa

Differential Revision: D35200011

fbshipit-source-id: 82bdecc5076b86958ea0cb80260584c012940045

iOS/Plugins/FlipperKitNetworkPlugin/SKIOSNetworkPlugin/SKFLEXNetworkLib/SKFLEXUtility.mm

@@ -0,0 +1,157 @@
+// @lint-ignore-every LICENSELINT
+/*
+ * The file was derived from FLEXUtility.h.
+ * All modifications to the original source are licensed under:
+ *
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+//
+//  FLEXUtility.m
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/18/14.
+//  Copyright (c) 2020 FLEX Team. All rights reserved.
+//
+
+// Copyright (c) 2014-2016, Flipboard
+// All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+// * Redistributions of source code must retain the above copyright notice, this
+//   list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright notice,
+// this
+//   list of conditions and the following disclaimer in the documentation and/or
+//   other materials provided with the distribution.
+// * Neither the name of Flipboard nor the names of its
+//   contributors may be used to endorse or promote products derived from
+//   this software without specific prior written permission.
+// * You must NOT include this project in an application to be submitted
+//   to the App Store™, as this project uses too many private APIs.
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+#import "SKFLEXUtility.h"
+
+#include <assert.h>
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#import <objc/runtime.h>
+#import <zlib.h>
+
+#import <ImageIO/ImageIO.h>
+
+@implementation SKFLEXUtility
+
++ (SEL)swizzledSelectorForSelector:(SEL)selector {
+  return NSSelectorFromString(
+      [NSString stringWithFormat:@"_skflex_swizzle_%x_%@",
+                                 arc4random(),
+                                 NSStringFromSelector(selector)]);
+}
+
++ (BOOL)instanceRespondsButDoesNotImplementSelector:(SEL)selector
+                                              class:(Class)cls {
+  if ([cls instancesRespondToSelector:selector]) {
+    unsigned int numMethods = 0;
+    Method* methods = class_copyMethodList(cls, &numMethods);
+
+    BOOL implementsSelector = NO;
+    for (int index = 0; index < numMethods; index++) {
+      SEL methodSelector = method_getName(methods[index]);
+      if (selector == methodSelector) {
+        implementsSelector = YES;
+        break;
+      }
+    }
+
+    free(methods);
+
+    if (!implementsSelector) {
+      return YES;
+    }
+  }
+
+  return NO;
+}
+
++ (void)replaceImplementationOfKnownSelector:(SEL)originalSelector
+                                     onClass:(Class)className
+                                   withBlock:(id)block
+                            swizzledSelector:(SEL)swizzledSelector {
+  // This method is only intended for swizzling methods that are know to exist
+  // on the class. Bail if that isn't the case.
+  Method originalMethod = class_getInstanceMethod(className, originalSelector);
+  if (!originalMethod) {
+    return;
+  }
+
+  IMP implementation = imp_implementationWithBlock(block);
+  class_addMethod(
+      className,
+      swizzledSelector,
+      implementation,
+      method_getTypeEncoding(originalMethod));
+  Method newMethod = class_getInstanceMethod(className, swizzledSelector);
+  method_exchangeImplementations(originalMethod, newMethod);
+}
+
++ (void)replaceImplementationOfSelector:(SEL)selector
+                           withSelector:(SEL)swizzledSelector
+                               forClass:(Class)cls
+                  withMethodDescription:
+                      (struct objc_method_description)methodDescription
+                    implementationBlock:(id)implementationBlock
+                         undefinedBlock:(id)undefinedBlock {
+  if ([self instanceRespondsButDoesNotImplementSelector:selector class:cls]) {
+    return;
+  }
+
+  IMP implementation = imp_implementationWithBlock((id)(
+      [cls instancesRespondToSelector:selector] ? implementationBlock
+                                                : undefinedBlock));
+
+  Method oldMethod = class_getInstanceMethod(cls, selector);
+  if (oldMethod) {
+    objc_method_description* description = method_getDescription(oldMethod);
+    class_addMethod(cls, swizzledSelector, implementation, description->types);
+    Method newMethod = class_getInstanceMethod(cls, swizzledSelector);
+    method_exchangeImplementations(oldMethod, newMethod);
+  } else {
+    class_addMethod(cls, selector, implementation, methodDescription.types);
+  }
+}
+
+@end
+
+@implementation NSNumber (SonarUtility)
+
++ (NSNumber*)random {
+  int64_t identifier;
+  arc4random_buf(&identifier, sizeof(int64_t));
+  return @(identifier);
+}
+
+@end
+
+@implementation NSDate (SonarUtility)
+
++ (NSTimeInterval)timestamp {
+  const NSTimeInterval timestamp = [[NSDate date] timeIntervalSince1970];
+  return timestamp * 1000;
+}
+
+@end