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// Copyright 2017 Google
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#import <Foundation/Foundation.h>
#if TARGET_OS_IOS || TARGET_OS_TV
#import <MobileCoreServices/MobileCoreServices.h>
#elif TARGET_OS_OSX
#import <CoreServices/CoreServices.h>
#endif
#import "FIRStorageUtils.h"
#import "FIRStorageConstants_Private.h"
#import "FIRStoragePath.h"
#import "FirebaseStorage.h"
#import "GTMSessionFetcher.h"
// This is the list at https://cloud.google.com/storage/docs/json_api/ without & and +.
NSString *const kGCSObjectAllowedCharacterSet =
@"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$'()*,;=:@";
@implementation FIRStorageUtils
+ (nullable NSString *)GCSEscapedString:(NSString *)string {
NSCharacterSet *allowedCharacters =
[NSCharacterSet characterSetWithCharactersInString:kGCSObjectAllowedCharacterSet];
return [string stringByAddingPercentEncodingWithAllowedCharacters:allowedCharacters];
}
+ (nullable NSString *)MIMETypeForExtension:(NSString *)extension {
if (extension == nil) {
return nil;
}
CFStringRef pathExtension = (__bridge_retained CFStringRef)extension;
CFStringRef type =
UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension, NULL);
NSString *mimeType =
(__bridge_transfer NSString *)UTTypeCopyPreferredTagWithClass(type, kUTTagClassMIMEType);
CFRelease(pathExtension);
if (type != NULL) {
CFRelease(type);
}
return mimeType;
}
+ (NSString *)queryStringForDictionary:(nullable NSDictionary *)dictionary {
if (!dictionary) {
return @"";
}
__block NSMutableArray *queryItems = [[NSMutableArray alloc] initWithCapacity:[dictionary count]];
[dictionary enumerateKeysAndObjectsUsingBlock:^(NSString *_Nonnull name, NSString *_Nonnull value,
BOOL *_Nonnull stop) {
NSString *item =
[FIRStorageUtils GCSEscapedString:[NSString stringWithFormat:@"%@=%@", name, value]];
[queryItems addObject:item];
}];
return [queryItems componentsJoinedByString:@"&"];
}
+ (NSURLRequest *)defaultRequestForPath:(FIRStoragePath *)path {
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
NSURLComponents *components = [[NSURLComponents alloc] init];
[components setScheme:kFIRStorageScheme];
[components setHost:kFIRStorageHost];
NSString *encodedPath = [self encodedURLForPath:path];
[components setPercentEncodedPath:encodedPath];
[request setURL:components.URL];
return request;
}
+ (NSString *)encodedURLForPath:(FIRStoragePath *)path {
NSString *bucketName = [FIRStorageUtils GCSEscapedString:path.bucket];
NSString *objectName = [FIRStorageUtils GCSEscapedString:path.object];
NSString *bucketFormat = [NSString stringWithFormat:kFIRStorageBucketPathFormat, bucketName];
NSString *urlPath = [@"/" stringByAppendingPathComponent:bucketFormat];
if (objectName) {
NSString *objectFormat = [NSString stringWithFormat:kFIRStorageObjectPathFormat, objectName];
urlPath = [urlPath stringByAppendingFormat:@"/%@", objectFormat];
} else {
urlPath = [urlPath stringByAppendingString:@"/o"];
}
return [@"/" stringByAppendingString:[kFIRStorageVersionPath stringByAppendingString:urlPath]];
}
@end
@implementation NSDictionary (FIRStorageNSDictionaryJSONHelpers)
+ (nullable instancetype)frs_dictionaryFromJSONData:(nullable NSData *)data {
if (!data) {
return nil;
}
return [NSJSONSerialization JSONObjectWithData:data
options:NSJSONReadingMutableContainers
error:nil];
}
@end
@implementation NSData (FIRStorageNSDataJSONHelpers)
+ (nullable instancetype)frs_dataFromJSONDictionary:(nullable NSDictionary *)dictionary {
if (!dictionary) {
return nil;
}
return [NSJSONSerialization dataWithJSONObject:dictionary options:0 error:nil];
}
@end
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