fix: handle file writing errors (#3268)

Co-authored-by: Cristiano Coelho <cristianocca@hotmail.com>

Author: cristianoccazinsp

ios/RN/RNCamera.m

@@ -949,33 +949,46 @@ - (void)takePicture:(NSDictionary *)options resolve:(RCTPromiseResolveBlock)reso
                         path = [RNFileSystem generatePathInDirectory:[[RNFileSystem cacheDirectoryPath] stringByAppendingPathComponent:@"Camera"] withExtension:imageExtension];
                     }
 
+                    bool success = YES;
+                    
                     if (![options[@"doNotSave"] boolValue]) {
-                        response[@"uri"] = [RNImageUtils writeImage:destData toPath:path];
+                        NSString* pathRes = [RNImageUtils writeImage:destData toPath:path];
+                        if (!pathRes) {
+                            reject(@"E_IMAGE_CAPTURE_FAILED", @"Image could not be saved: file write failed.", nil);
+                            success = NO;
+                        } else {
+                            response[@"uri"] = pathRes;
+                        }
+                        
                     }
-                    response[@"width"] = @(takenImage.size.width);
-                    response[@"height"] = @(takenImage.size.height);
+                    
+                    if (success) {
+                        response[@"width"] = @(takenImage.size.width);
+                        response[@"height"] = @(takenImage.size.height);
 
-                    if ([options[@"base64"] boolValue]) {
-                        response[@"base64"] = [destData base64EncodedStringWithOptions:0];
-                    }
+                        if ([options[@"base64"] boolValue]) {
+                            response[@"base64"] = [destData base64EncodedStringWithOptions:0];
+                        }
 
-                    if ([options[@"exif"] boolValue]) {
-                        response[@"exif"] = metadata;
+                        if ([options[@"exif"] boolValue]) {
+                            response[@"exif"] = metadata;
 
-                        // No longer needed since we always get the photo metadata now
-                        //[RNImageUtils updatePhotoMetadata:imageSampleBuffer withAdditionalData:@{ @"Orientation": @(imageRotation) } inResponse:response]; // TODO
-                    }
+                            // No longer needed since we always get the photo metadata now
+                            //[RNImageUtils updatePhotoMetadata:imageSampleBuffer withAdditionalData:@{ @"Orientation": @(imageRotation) } inResponse:response]; // TODO
+                        }
 
-                    response[@"pictureOrientation"] = @([self.orientation integerValue]);
-                    response[@"deviceOrientation"] = @([self.deviceOrientation integerValue]);
+                        response[@"pictureOrientation"] = @([self.orientation integerValue]);
+                        response[@"deviceOrientation"] = @([self.deviceOrientation integerValue]);
+                        
+                        if (useFastMode) {
+                            [self onPictureSaved:@{@"data": response, @"id": options[@"id"]}];
+                        } else {
+                            resolve(response);
+                        }
+                    }
+                    
                     self.orientation = nil;
                     self.deviceOrientation = nil;
-
-                    if (useFastMode) {
-                        [self onPictureSaved:@{@"data": response, @"id": options[@"id"]}];
-                    } else {
-                        resolve(response);
-                    }
                 }
                 else{
                     reject(@"E_IMAGE_CAPTURE_FAILED", @"Image could not be saved", error);

ios/RN/RNCameraManager.m

@@ -391,20 +391,31 @@ + (NSDictionary *)barcodeDetectorConstants
             }
 
             [view onPictureTaken:@{}];
+            
+            bool success = YES;
 
             NSData *photoData = UIImageJPEGRepresentation(generatedPhoto, quality);
             if (![options[@"doNotSave"] boolValue]) {
-                response[@"uri"] = [RNImageUtils writeImage:photoData toPath:path];
-            }
-            response[@"width"] = @(generatedPhoto.size.width);
-            response[@"height"] = @(generatedPhoto.size.height);
-            if ([options[@"base64"] boolValue]) {
-                response[@"base64"] = [photoData base64EncodedStringWithOptions:0];
+                NSString* pathRes = [RNImageUtils writeImage:photoData toPath:path];
+                if (!pathRes) {
+                    reject(@"E_IMAGE_CAPTURE_FAILED", @"Image could not be saved: file write failed.", nil);
+                    success = NO;
+                } else {
+                    response[@"uri"] = pathRes;
+                }
             }
-            if (useFastMode) {
-                [view onPictureSaved:@{@"data": response, @"id": options[@"id"]}];
-            } else {
-                resolve(response);
+            
+            if (success) {
+                response[@"width"] = @(generatedPhoto.size.width);
+                response[@"height"] = @(generatedPhoto.size.height);
+                if ([options[@"base64"] boolValue]) {
+                    response[@"base64"] = [photoData base64EncodedStringWithOptions:0];
+                }
+                if (useFastMode) {
+                    [view onPictureSaved:@{@"data": response, @"id": options[@"id"]}];
+                } else {
+                    resolve(response);
+                }
             }
 #else
             [view takePicture:options resolve:resolve reject:reject];

ios/RN/RNImageUtils.m

@@ -63,7 +63,9 @@ + (UIImage *)mirrorImage:(UIImage *)image
 
 + (NSString *)writeImage:(NSData *)image toPath:(NSString *)path
 {
-    [image writeToFile:path atomically:YES];
+    if (![image writeToFile:path atomically:YES]) {
+        return nil;
+    }
     NSURL *fileURL = [NSURL fileURLWithPath:path];
     return [fileURL absoluteString];
 }