Re-applied pin patch.

Author: Edward Smith

Branch-SDK/Branch-SDK/BNCConfig.h

@@ -12,3 +12,4 @@ extern NSString * const BNC_SDK_VERSION;
 extern NSString * const BNC_API_BASE_URL;
 extern NSString * const BNC_LINK_URL;
 extern NSString * const BNC_API_VERSION;
+extern BOOL       const BNC_API_PINNED;

Branch-SDK/Branch-SDK/BNCConfig.m

@@ -9,6 +9,8 @@
 #include "BNCConfig.h"
 
 NSString * const BNC_API_BASE_URL    = @"https://api.branch.io";
+BOOL       const BNC_API_PINNED      = YES;
 NSString * const BNC_API_VERSION     = @"v1";
 NSString * const BNC_LINK_URL        = @"https://bnc.lt";
 NSString * const BNC_SDK_VERSION     = @"0.19.5";
+

Branch-SDK/Branch-SDK/Networking/BNCNetworkService.m

@@ -11,6 +11,7 @@
 #import "BNCLog.h"
 #import "BNCDebug.h"
 #import "BNCError.h"
+#import "BNCConfig.h"
 
 #pragma mark BNCNetworkOperation
 
@@ -275,6 +276,11 @@ - (void) URLSession:(NSURLSession *)session
         }
     }
 
+    if (!BNC_API_PINNED) {
+        trusted = YES;
+        goto exit;
+    }
+
 exit:
     if (err) {
         NSError *error = [NSError errorWithDomain:NSOSStatusErrorDomain code:err userInfo:nil];

Branch-SDK/Branch-SDK/Networking/BNCServerInterface.m

@@ -591,7 +591,8 @@ - (NSError*) verifyNetworkOperation:(id<BNCNetworkOperationProtocol>)operation {
 
     if (!operation) {
         NSString *message = BNCLocalizedString(
-            @"A network operation instance is expected to be returned by the networkOperationWithURLRequest:completion: method."
+            @"A network operation instance is expected to be returned by the"
+             " networkOperationWithURLRequest:completion: method."
         );
         NSError *error = [NSError branchErrorWithCode:BNCNetworkServiceInterfaceError localizedMessage:message];
         return error;
@@ -641,7 +642,8 @@ - (BNCServerResponse *)genericHTTPRequestSynchronous:(NSURLRequest *)request {
             networkOperationWithURLRequest:request.copy
             completion:^void (id<BNCNetworkOperationProtocol>operation) {
                 serverResponse =
-                    [self processServerResponse:operation.response data:operation.responseData error:operation.error];
+                    [self processServerResponse:operation.response
+                        data:operation.responseData error:operation.error];
                 [self collectInstrumentationMetricsWithOperation:operation];                    
                 dispatch_semaphore_signal(semaphore);
             }];