//
// CCUtility.m
// Nextcloud iOS
//
// Created by Marino Faggiana on 02/02/16.
// Copyright (c) 2017 TWS. All rights reserved.
//
// Author Marino Faggiana <m.faggiana@twsweb.it>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#import "CCUtility.h"
#import "CCGraphics.h"
#import "NCBridgeSwift.h"
#import <netinet/in.h>
#import <openssl/x509.h>
#import <openssl/bio.h>
#import <openssl/err.h>
#import <openssl/pem.h>
#define INTRO_MessageType @"MessageType_"
#define E2E_PublicKey @"EndToEndPublicKey_"
#define E2E_PrivateKey @"EndToEndPrivateKey_"
#define E2E_Passphrase @"EndToEndPassphrase_"
#define E2E_PublicKeyServer @"EndToEndPublicKeyServer_"
@implementation CCUtility
#pragma --------------------------------------------------------------------------------------------
#pragma mark ======================= KeyChainStore ==================================
#pragma --------------------------------------------------------------------------------------------
+ (void)deleteAllChainStore
{
[UICKeyChainStore removeAllItems];
[UICKeyChainStore removeAllItemsForService:k_serviceShareKeyChain];
}
+ (void)storeAllChainInService
{
UICKeyChainStore *store = [UICKeyChainStore keyChainStore];
NSArray *items = store.allItems;
for (NSDictionary *item in items) {
[UICKeyChainStore setString:[item objectForKey:@"value"] forKey:[item objectForKey:@"key"] service:k_serviceShareKeyChain];
[UICKeyChainStore removeItemForKey:[item objectForKey:@"key"]];
}
}
#pragma ------------------------------ ADMIN
+ (void)adminRemoveIntro
{
NSString *version = [self getVersion];
[UICKeyChainStore setString:nil forKey:version service:k_serviceShareKeyChain];
}
+ (void)adminRemovePasscode
{
NSString *uuid = [self getUUID];
[UICKeyChainStore setString:nil forKey:uuid service:k_serviceShareKeyChain];
}
+ (void)adminRemoveVersion
{
[UICKeyChainStore setString:@"0.0" forKey:@"version" service:k_serviceShareKeyChain];
}
#pragma ------------------------------ GET/SET
+ (NSString *)getUUID
{
#if TARGET_IPHONE_SIMULATOR
NSUUID *deviceId = [[NSUUID alloc]initWithUUIDString:k_UUID_SIM];
return [deviceId UUIDString];
#else
NSString *uuid = [[UIDevice currentDevice] identifierForVendor].UUIDString;
return uuid;
#endif
}
+ (NSString *)getKeyChainPasscodeForUUID:(NSString *)uuid
{
if (!uuid) return @"";
NSString *passcode = [UICKeyChainStore stringForKey:uuid service:k_serviceShareKeyChain];
if (!passcode)
passcode = @"";
return passcode;
}
+ (void)setKeyChainPasscodeForUUID:(NSString *)uuid conPasscode:(NSString *)passcode
{
[UICKeyChainStore setString:passcode forKey:uuid service:k_serviceShareKeyChain];
}
+ (NSString *)getVersion
{
return [UICKeyChainStore stringForKey:@"version" service:k_serviceShareKeyChain];
}
+ (NSString *)setVersion
{
NSString *version = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
[UICKeyChainStore setString:version forKey:@"version" service:k_serviceShareKeyChain];
return version;
}
+ (NSString *)getBuild
{
return [UICKeyChainStore stringForKey:@"build" service:k_serviceShareKeyChain];
}
+ (NSString *)setBuild
{
NSString *build = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleVersion"];
[UICKeyChainStore setString:build forKey:@"build" service:k_serviceShareKeyChain];
return build;
}
+ (NSString *)getBlockCode
{
return [UICKeyChainStore stringForKey:@"blockcode" service:k_serviceShareKeyChain];
}
+ (void)setBlockCode:(NSString *)blockcode
{
[UICKeyChainStore setString:blockcode forKey:@"blockcode" service:k_serviceShareKeyChain];
}
+ (BOOL)getSimplyBlockCode
{
NSString *simplyBlockCode = [UICKeyChainStore stringForKey:@"simplyblockcode" service:k_serviceShareKeyChain];
if (simplyBlockCode == nil) {
[self setSimplyBlockCode:YES];
return YES;
}
return [simplyBlockCode boolValue];
}
+ (void)setSimplyBlockCode:(BOOL)simply
{
NSString *sSimply = (simply) ? @"true" : @"false";
[UICKeyChainStore setString:sSimply forKey:@"simplyblockcode" service:k_serviceShareKeyChain];
}
+ (BOOL)getOnlyLockDir
{
return [[UICKeyChainStore stringForKey:@"onlylockdir" service:k_serviceShareKeyChain] boolValue];
}
+ (void)setOnlyLockDir:(BOOL)lockDir
{
NSString *sLockDir = (lockDir) ? @"true" : @"false";
[UICKeyChainStore setString:sLockDir forKey:@"onlylockdir" service:k_serviceShareKeyChain];
}
+ (BOOL)getOptimizedPhoto
{
return [[UICKeyChainStore stringForKey:@"optimizedphoto" service:k_serviceShareKeyChain] boolValue];
}
+ (void)setOptimizedPhoto:(BOOL)resize
{
NSString *sOptimizedPhoto = (resize) ? @"true" : @"false";
[UICKeyChainStore setString:sOptimizedPhoto forKey:@"optimizedphoto" service:k_serviceShareKeyChain];
}
+ (BOOL)getUploadAndRemovePhoto
{
return [[UICKeyChainStore stringForKey:@"uploadremovephoto" service:k_serviceShareKeyChain] boolValue];
}
+ (void)setUploadAndRemovePhoto:(BOOL)remove
{
NSString *sRemovePhoto = (remove) ? @"true" : @"false";
[UICKeyChainStore setString:sRemovePhoto forKey:@"uploadremovephoto" service:k_serviceShareKeyChain];
}
+ (NSString *)getOrderSettings
{
NSString *order = [UICKeyChainStore stringForKey:@"order" service:k_serviceShareKeyChain];
if (order == nil) {
[self setOrderSettings:@"fileName"];
return @"fileName";
}
return order;
}
+ (void)setOrderSettings:(NSString *)order
{
[UICKeyChainStore setString:order forKey:@"order" service:k_serviceShareKeyChain];
}
+ (BOOL)getAscendingSettings
{
NSString *ascending = [UICKeyChainStore stringForKey:@"ascending" service:k_serviceShareKeyChain];
if (ascending == nil) {
[self setAscendingSettings:YES];
return YES;
}
return [ascending boolValue];
}
+ (void)setAscendingSettings:(BOOL)ascendente
{
NSString *sAscendente = (ascendente) ? @"true" : @"false";
[UICKeyChainStore setString:sAscendente forKey:@"ascending" service:k_serviceShareKeyChain];
}
+ (NSString *)getGroupBySettings
{
NSString *groupby = [UICKeyChainStore stringForKey:@"groupby" service:k_serviceShareKeyChain];
if (groupby == nil) {
[self setGroupBySettings:@"none"];
return @"none";
}
return groupby;
}
+ (void)setGroupBySettings:(NSString *)groupby
{
[UICKeyChainStore setString:groupby forKey:@"groupby" service:k_serviceShareKeyChain];
}
+ (BOOL)getIntro
{
// Set compatibility old version don't touch me
if ([[UICKeyChainStore stringForKey:[INTRO_MessageType stringByAppendingString:@"Intro"] service:k_serviceShareKeyChain] boolValue] == YES) {
[CCUtility setIntro:YES];
return YES;
}
return [[UICKeyChainStore stringForKey:@"intro" service:k_serviceShareKeyChain] boolValue];
}
+ (BOOL)getIntroMessageOldVersion
{
NSString *key = [INTRO_MessageType stringByAppendingString:@"Intro"];
return [[UICKeyChainStore stringForKey:key service:k_serviceShareKeyChain] boolValue];
}
+ (void)setIntro:(BOOL)set
{
NSString *sIntro = (set) ? @"true" : @"false";
[UICKeyChainStore setString:sIntro forKey:@"intro" service:k_serviceShareKeyChain];
}
+ (NSString *)getIncrementalNumber
{
long number = [[UICKeyChainStore stringForKey:@"incrementalnumber" service:k_serviceShareKeyChain] intValue];
number++;
if (number >= 9999) number = 1;
[UICKeyChainStore setString:[NSString stringWithFormat:@"%ld", number] forKey:@"incrementalnumber"];
return [NSString stringWithFormat:@"%04ld", number];
}
+ (NSString *)getActiveAccountExt
{
return [UICKeyChainStore stringForKey:@"activeAccountExt" service:k_serviceShareKeyChain];
}
+ (void)setActiveAccountExt:(NSString *)activeAccount
{
[UICKeyChainStore setString:activeAccount forKey:@"activeAccountExt" service:k_serviceShareKeyChain];
}
+ (NSString *)getServerUrlExt
{
return [UICKeyChainStore stringForKey:@"serverUrlExt" service:k_serviceShareKeyChain];
}
+ (void)setServerUrlExt:(NSString *)serverUrl
{
[UICKeyChainStore setString:serverUrl forKey:@"serverUrlExt" service:k_serviceShareKeyChain];
}
+ (NSString *)getTitleServerUrlExt
{
return [UICKeyChainStore stringForKey:@"titleServerUrlExt" service:k_serviceShareKeyChain];
}
+ (void)setTitleServerUrlExt:(NSString *)titleServerUrl
{
[UICKeyChainStore setString:titleServerUrl forKey:@"titleServerUrlExt" service:k_serviceShareKeyChain];
}
+ (NSString *)getFileNameExt
{
return [UICKeyChainStore stringForKey:@"fileNameExt" service:k_serviceShareKeyChain];
}
+ (void)setFileNameExt:(NSString *)fileName
{
[UICKeyChainStore setString:fileName forKey:@"fileNameExt" service:k_serviceShareKeyChain];
}
+ (NSString *)getEmail
{
return [UICKeyChainStore stringForKey:@"email" service:k_serviceShareKeyChain];
}
+ (void)setEmail:(NSString *)email
{
[UICKeyChainStore setString:email forKey:@"email" service:k_serviceShareKeyChain];
}
+ (NSString *)getHint
{
return [UICKeyChainStore stringForKey:@"hint" service:k_serviceShareKeyChain];
}
+ (void)setHint:(NSString *)hint
{
[UICKeyChainStore setString:hint forKey:@"hint" service:k_serviceShareKeyChain];
}
+ (BOOL)getDirectoryOnTop
{
NSString *valueString = [UICKeyChainStore stringForKey:@"directoryOnTop" service:k_serviceShareKeyChain];
// Default TRUE
if (valueString == nil) {
[self setDirectoryOnTop:YES];
return true;
}
return [valueString boolValue];
}
+ (void)setDirectoryOnTop:(BOOL)directoryOnTop
{
NSString *sDirectoryOnTop = (directoryOnTop) ? @"true" : @"false";
[UICKeyChainStore setString:sDirectoryOnTop forKey:@"directoryOnTop" service:k_serviceShareKeyChain];
}
+ (NSString *)getFileNameMask:(NSString *)key
{
NSString *mask = [UICKeyChainStore stringForKey:key service:k_serviceShareKeyChain];
if (mask == nil)
mask = @"";
return mask;
}
+ (void)setFileNameMask:(NSString *)mask key:(NSString *)key
{
[UICKeyChainStore setString:mask forKey:key service:k_serviceShareKeyChain];
}
+ (BOOL)getFileNameType:(NSString *)key
{
return [[UICKeyChainStore stringForKey:key service:k_serviceShareKeyChain] boolValue];
}
+ (void)setFileNameType:(BOOL)prefix key:(NSString *)key
{
NSString *sPrefix = (prefix) ? @"true" : @"false";
[UICKeyChainStore setString:sPrefix forKey:key service:k_serviceShareKeyChain];
}
+ (BOOL)getFavoriteOffline
{
return [[UICKeyChainStore stringForKey:@"favoriteOffline" service:k_serviceShareKeyChain] boolValue];
}
+ (void)setFavoriteOffline:(BOOL)offline
{
NSString *sFavoriteOffline = (offline) ? @"true" : @"false";
[UICKeyChainStore setString:sFavoriteOffline forKey:@"favoriteOffline" service:k_serviceShareKeyChain];
}
+ (BOOL)getActivityVerboseHigh
{
return [[UICKeyChainStore stringForKey:@"activityVerboseHigh" service:k_serviceShareKeyChain] boolValue];
}
+ (void)setActivityVerboseHigh:(BOOL)high
{
NSString *sHigh = (high) ? @"true" : @"false";
[UICKeyChainStore setString:sHigh forKey:@"activityVerboseHigh" service:k_serviceShareKeyChain];
}
+ (BOOL)getShowHiddenFiles
{
return [[UICKeyChainStore stringForKey:@"showHiddenFiles" service:k_serviceShareKeyChain] boolValue];
}
+ (void)setShowHiddenFiles:(BOOL)show
{
NSString *sShow = (show) ? @"true" : @"false";
[UICKeyChainStore setString:sShow forKey:@"showHiddenFiles" service:k_serviceShareKeyChain];
}
+ (BOOL)getFormatCompatibility
{
NSString *valueString = [UICKeyChainStore stringForKey:@"formatCompatibility" service:k_serviceShareKeyChain];
// Default TRUE
if (valueString == nil) {
[self setFormatCompatibility:YES];
return true;
}
return [valueString boolValue];
}
+ (void)setFormatCompatibility:(BOOL)set
{
NSString *sSet = (set) ? @"true" : @"false";
[UICKeyChainStore setString:sSet forKey:@"formatCompatibility" service:k_serviceShareKeyChain];
}
+ (NSString *)getEndToEndPublicKey:(NSString *)account
{
NSString *key = [E2E_PublicKey stringByAppendingString:account];
return [UICKeyChainStore stringForKey:key service:k_serviceShareKeyChain];
}
+ (void)setEndToEndPublicKey:(NSString *)account publicKey:(NSString *)publicKey
{
NSString *key = [E2E_PublicKey stringByAppendingString:account];
[UICKeyChainStore setString:publicKey forKey:key service:k_serviceShareKeyChain];
}
+ (NSString *)getEndToEndPrivateKey:(NSString *)account
{
NSString *key = [E2E_PrivateKey stringByAppendingString:account];
return [UICKeyChainStore stringForKey:key service:k_serviceShareKeyChain];
}
+ (void)setEndToEndPrivateKey:(NSString *)account privateKey:(NSString *)privateKey
{
NSString *key = [E2E_PrivateKey stringByAppendingString:account];
[UICKeyChainStore setString:privateKey forKey:key service:k_serviceShareKeyChain];
}
+ (NSString *)getEndToEndPassphrase:(NSString *)account
{
NSString *key = [E2E_Passphrase stringByAppendingString:account];
return [UICKeyChainStore stringForKey:key service:k_serviceShareKeyChain];
}
+ (void)setEndToEndPassphrase:(NSString *)account passphrase:(NSString *)passphrase
{
NSString *key = [E2E_Passphrase stringByAppendingString:account];
[UICKeyChainStore setString:passphrase forKey:key service:k_serviceShareKeyChain];
}
+ (NSString *)getEndToEndPublicKeyServer:(NSString *)account
{
NSString *key = [E2E_PublicKeyServer stringByAppendingString:account];
return [UICKeyChainStore stringForKey:key service:k_serviceShareKeyChain];
}
+ (void)setEndToEndPublicKeyServer:(NSString *)account publicKey:(NSString *)publicKey
{
NSString *key = [E2E_PublicKeyServer stringByAppendingString:account];
[UICKeyChainStore setString:publicKey forKey:key service:k_serviceShareKeyChain];
}
+ (BOOL)isEndToEndEnabled:(NSString *)account
{
tableCapabilities *capabilities = [[NCManageDatabase sharedInstance] getCapabilites];
NSString *publicKey = [self getEndToEndPublicKey:account];
NSString *privateKey = [self getEndToEndPrivateKey:account];
NSString *passphrase = [self getEndToEndPassphrase:account];
NSString *publicKeyServer = [self getEndToEndPublicKeyServer:account];
if (passphrase.length > 0 && privateKey.length > 0 && publicKey.length > 0 && publicKeyServer.length > 0 && capabilities.endToEndEncryption) {
return YES;
} else {
return NO;
}
}
+ (void)clearAllKeysEndToEnd:(NSString *)account
{
[self setEndToEndPublicKey:account publicKey:nil];
[self setEndToEndPrivateKey:account privateKey:nil];
[self setEndToEndPassphrase:account passphrase:nil];
[self setEndToEndPublicKeyServer:account publicKey:nil];
}
+ (BOOL)getDisableFilesApp
{
return [[UICKeyChainStore stringForKey:@"disablefilesapp" service:k_serviceShareKeyChain] boolValue];
}
+ (void)setDisableFilesApp:(BOOL)disable
{
NSString *sDisable = (disable) ? @"true" : @"false";
[UICKeyChainStore setString:sDisable forKey:@"disablefilesapp" service:k_serviceShareKeyChain];
}
#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Varius =====
#pragma --------------------------------------------------------------------------------------------
+ (NSString *)getUserAgent
{
NSString *appVersion = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
return [NSString stringWithFormat:@"%@%@",@"Mozilla/5.0 (iOS) Nextcloud-iOS/",appVersion];
}
+ (NSString *)dateDiff:(NSDate *) convertedDate
{
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setFormatterBehavior:NSDateFormatterBehavior10_4];
[df setDateFormat:@"EEE, dd MMM yy HH:mm:ss VVVV"];
//NSDate *convertedDate = [df dateFromString:origDate];
//NSDate *convertedDate = [NSDate dateWithTimeIntervalSince1970:origDate];
NSDate *todayDate = [NSDate date];
double ti = [convertedDate timeIntervalSinceDate:todayDate];
ti = ti * -1;
if (ti < 60) {
return NSLocalizedString(@"_less_a_minute_", nil);
} else if (ti < 3600) {
int diff = round(ti / 60);
return [NSString stringWithFormat:NSLocalizedString(@"_minutes_ago_", nil), diff];
} else if (ti < 86400) {
int diff = round(ti / 60 / 60);
return[NSString stringWithFormat:NSLocalizedString(@"_hours_ago_", nil), diff];
} else if (ti < 2629743) {
int diff = round(ti / 60 / 60 / 24);
return[NSString stringWithFormat:NSLocalizedString(@"_days_ago_", nil), diff];
} else {
return NSLocalizedString(@"_over_30_days_", nil);
}
}
+ (NSDate *)dateEnUsPosixFromCloud:(NSString *)dateString
{
NSDate *date = [NSDate date];
NSError *error;
NSDateFormatter *dateFormatter = [NSDateFormatter new];
NSLocale *enUSPOSIXLocale = [NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"];
[dateFormatter setLocale:enUSPOSIXLocale];
[dateFormatter setDateFormat:@"EEE, dd MMM y HH:mm:ss zzz"];
if (![dateFormatter getObjectValue:&date forString:dateString range:nil error:&error]) {
NSLog(@"[LOG] Date '%@' could not be parsed: %@", dateString, error);
date = [NSDate date];
}
return date;
}
+ (NSString *)transformedSize:(double)value
{
NSString *string = [NSByteCountFormatter stringFromByteCount:value countStyle:NSByteCountFormatterCountStyleBinary];
return string;
}
// Remove do not forbidden characters for Nextcloud Server
+ (NSString *)removeForbiddenCharactersServer:(NSString *)fileName
{
NSArray *arrayForbiddenCharacters = [NSArray arrayWithObjects:@"/", nil];
for (NSString *currentCharacter in arrayForbiddenCharacters) {
fileName = [fileName stringByReplacingOccurrencesOfString:currentCharacter withString:@""];
}
return fileName;
}
// Remove do not forbidden characters for File System Server
+ (NSString *)removeForbiddenCharactersFileSystem:(NSString *)fileName
{
NSArray *arrayForbiddenCharacters = [NSArray arrayWithObjects:@"\\",@"<",@">",@":",@"\"",@"|",@"?",@"*",@"/", nil];
for (NSString *currentCharacter in arrayForbiddenCharacters) {
fileName = [fileName stringByReplacingOccurrencesOfString:currentCharacter withString:@""];
}
return fileName;
}
+ (NSString*)stringAppendServerUrl:(NSString *)serverUrl addFileName:(NSString *)addFileName
{
NSString *result;
if (serverUrl == nil || addFileName == nil) return nil;
if ([addFileName isEqualToString:@""]) return serverUrl;
if ([serverUrl isEqualToString:@"/"]) result = [serverUrl stringByAppendingString:addFileName];
else result = [NSString stringWithFormat:@"%@/%@", serverUrl, addFileName];
return result;
}
+ (NSString *)createRandomString:(int)numChars
{
NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
NSMutableString *randomString = [NSMutableString stringWithCapacity: numChars];
for (int i=0; i < numChars; i++) {
[randomString appendFormat: @"%C", [letters characterAtIndex: arc4random_uniform((unsigned int)[letters length]) % [letters length]]];
}
return [NSString stringWithFormat:@"%@", randomString];
}
+ (NSString *)createFileName:fileName fileDate:(NSDate *)fileDate fileType:(PHAssetMediaType)fileType keyFileName:(NSString *)keyFileName keyFileNameType:(NSString *)keyFileNameType
{
BOOL addFileNameType = NO;
NSString *numberFileName;
if ([fileName length] > 8) numberFileName = [fileName substringWithRange:NSMakeRange(04, 04)];
else numberFileName = [CCUtility getIncrementalNumber];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yy-MM-dd HH-mm-ss"];
NSString *fileNameDate = [formatter stringFromDate:fileDate];
NSString *fileNameType = @"";
if (fileType == PHAssetMediaTypeImage)
fileNameType = NSLocalizedString(@"_photo_", nil);
if (fileType == PHAssetMediaTypeVideo)
fileNameType = NSLocalizedString(@"_video_", nil);
if (fileType == PHAssetMediaTypeAudio)
fileNameType = NSLocalizedString(@"_audio_", nil);
if (fileType == PHAssetMediaTypeUnknown)
fileNameType = NSLocalizedString(@"_unknown_", nil);
// Use File Name Type
if (keyFileNameType)
addFileNameType = [CCUtility getFileNameType:keyFileNameType];
NSString *fileNameExt = [[fileName pathExtension] lowercaseString];
if (keyFileName) {
fileName = [CCUtility getFileNameMask:keyFileName];
if ([fileName length] > 0) {
[formatter setDateFormat:@"dd"];
NSString *dayNumber = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"MMM"];
NSString *month = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"MM"];
NSString *monthNumber = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"yyyy"];
NSString *year = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"yy"];
NSString *yearNumber = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"HH"];
NSString *hour24 = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"hh"];
NSString *hour12 = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"mm"];
NSString *minute = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"ss"];
NSString *second = [formatter stringFromDate:fileDate];
[formatter setDateFormat:@"a"];
NSString *ampm = [formatter stringFromDate:fileDate];
// Replace string with date
fileName = [fileName stringByReplacingOccurrencesOfString:@"DD" withString:dayNumber];
fileName = [fileName stringByReplacingOccurrencesOfString:@"MMM" withString:month];
fileName = [fileName stringByReplacingOccurrencesOfString:@"MM" withString:monthNumber];
fileName = [fileName stringByReplacingOccurrencesOfString:@"YYYY" withString:year];
fileName = [fileName stringByReplacingOccurrencesOfString:@"YY" withString:yearNumber];
fileName = [fileName stringByReplacingOccurrencesOfString:@"HH" withString:hour24];
fileName = [fileName stringByReplacingOccurrencesOfString:@"hh" withString:hour12];
fileName = [fileName stringByReplacingOccurrencesOfString:@"mm" withString:minute];
fileName = [fileName stringByReplacingOccurrencesOfString:@"ss" withString:second];
fileName = [fileName stringByReplacingOccurrencesOfString:@"ampm" withString:ampm];
if (addFileNameType)
fileName = [NSString stringWithFormat:@"%@%@%@.%@", fileNameType, fileName, numberFileName, fileNameExt];
else
fileName = [NSString stringWithFormat:@"%@%@.%@", fileName, numberFileName, fileNameExt];
fileName = [fileName stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
} else {
if (addFileNameType)
fileName = [NSString stringWithFormat:@"%@ %@ %@.%@", fileNameType, fileNameDate, numberFileName, fileNameExt];
else
fileName = [NSString stringWithFormat:@"%@ %@.%@", fileNameDate, numberFileName, fileNameExt];
}
} else {
if (addFileNameType)
fileName = [NSString stringWithFormat:@"%@ %@ %@.%@", fileNameType, fileNameDate, numberFileName, fileNameExt];
else
fileName = [NSString stringWithFormat:@"%@ %@.%@", fileNameDate, numberFileName, fileNameExt];
}
return fileName;
}
+ (NSURL *)getDirectoryGroup
{
NSURL *path = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:[NCBrandOptions sharedInstance].capabilitiesGroups];
return path;
}
+ (NSString *)getHomeServerUrlActiveUrl:(NSString *)activeUrl
{
if (activeUrl == nil)
return @"";
return [activeUrl stringByAppendingString:k_webDAV];
}
+ (NSString *)getStringUser:(NSString *)activeUser activeUrl:(NSString *)activeUrl
{
NSString *baseUrl = [activeUrl lowercaseString];
NSString *dirUserBaseUrl = @"";
if ([activeUser length] && [baseUrl length]) {
if ([baseUrl hasPrefix:@"https://"]) baseUrl = [baseUrl substringFromIndex:8];
if ([baseUrl hasPrefix:@"http://"]) baseUrl = [baseUrl substringFromIndex:7];
dirUserBaseUrl = [NSString stringWithFormat:@"%@-%@", activeUser, baseUrl];
dirUserBaseUrl = [[self removeForbiddenCharactersFileSystem:dirUserBaseUrl] lowercaseString];
}
return dirUserBaseUrl;
}
// Return path of User
+ (NSString *)getDirectoryActiveUser:(NSString *)activeUser activeUrl:(NSString *)activeUrl
{
NSURL *dirGroup = [CCUtility getDirectoryGroup];
NSString *user = activeUser;
NSString *baseUrl = [activeUrl lowercaseString];
NSString *dirUserBaseUrl = nil;
NSString *dirApplicationUserGroup = nil;
if ([user length] && [baseUrl length]) {
if ([baseUrl hasPrefix:@"https://"]) baseUrl = [baseUrl substringFromIndex:8];
if ([baseUrl hasPrefix:@"http://"]) baseUrl = [baseUrl substringFromIndex:7];
dirUserBaseUrl = [NSString stringWithFormat:@"%@-%@", user, baseUrl];
dirUserBaseUrl = [[self removeForbiddenCharactersFileSystem:dirUserBaseUrl] lowercaseString];
} else return @"";
dirApplicationUserGroup = [[dirGroup URLByAppendingPathComponent:k_appApplicationSupport] path];
dirUserBaseUrl = [NSString stringWithFormat:@"%@/%@", dirApplicationUserGroup, dirUserBaseUrl];
if (![[NSFileManager defaultManager] fileExistsAtPath: dirUserBaseUrl]) {
[[NSFileManager defaultManager] createDirectoryAtPath:dirUserBaseUrl withIntermediateDirectories:YES attributes:nil error:nil];
}
return dirUserBaseUrl;
}
// Return the path of directory Documents -> NSDocumentDirectory
+ (NSString *)getDirectoryDocuments
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
return [paths objectAtIndex:0];
}
// Return the path of directory Audio
+ (NSString *)getDirectoryAudio
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES);
return [NSString stringWithFormat:@"%@/%@", [paths objectAtIndex:0], @"audio"];
}
// Return the path of directory Cetificates
+ (NSString *)getDirectoryCerificates
{
NSString *path = [[[CCUtility getDirectoryGroup] URLByAppendingPathComponent:k_appCertificates] path];
if (![[NSFileManager defaultManager] fileExistsAtPath:path])
[[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
return path;
}
+ (NSString *)getDirectoryUserData
{
NSString *path = [[[CCUtility getDirectoryGroup] URLByAppendingPathComponent:k_appUserData] path];
if (![[NSFileManager defaultManager] fileExistsAtPath:path])
[[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
return path;
}
+ (NSString *)getDirectoryProviderStorage
{
NSString *path = [[[CCUtility getDirectoryGroup] URLByAppendingPathComponent:k_DirectoryProviderStorage] path];
if (![[NSFileManager defaultManager] fileExistsAtPath:path])
[[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
return path;
}
+ (NSString *)getDirectoryProviderStorageFileID:(NSString *)fileID
{
NSString *path = [NSString stringWithFormat:@"%@/%@", [self getDirectoryProviderStorage], fileID];
if (![[NSFileManager defaultManager] fileExistsAtPath:path])
[[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
return path;
}
+ (NSString *)getDirectoryProviderStorageFileID:(NSString *)fileID fileName:(NSString *)fileName
{
NSString *fileNamePath = [NSString stringWithFormat:@"%@/%@", [self getDirectoryProviderStorageFileID:fileID], fileName];
// if do not exists create file 0 length
if ([[NSFileManager defaultManager] fileExistsAtPath:fileNamePath] == NO) {
[[NSFileManager defaultManager] createFileAtPath:fileNamePath contents:nil attributes:nil];
}
return fileNamePath;
}
+ (NSString *)getDirectoryProviderStorageIconFileID:(NSString *)fileID fileNameView:(NSString *)fileNameView
{
return [NSString stringWithFormat:@"%@/%@.ico", [self getDirectoryProviderStorageFileID:fileID], fileNameView];
}
+ (BOOL)fileProviderStorageExists:(NSString *)fileID fileName:(NSString *)fileName
{
NSString *fileNamePath = [self getDirectoryProviderStorageFileID:fileID fileName:fileName];
unsigned long long fileSize = [[[NSFileManager defaultManager] attributesOfItemAtPath:fileNamePath error:nil] fileSize];
if (fileSize > 0) return true;
else return false;
}
+ (NSString *)getTitleSectionDate:(NSDate *)date
{
NSString * title;
if ([date isEqualToDate:[CCUtility datetimeWithOutTime:[NSDate distantPast]]]) {
title = NSLocalizedString(@"_no_date_", nil);
} else {
title = [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterFullStyle timeStyle:0];
if ([date isEqualToDate:[CCUtility datetimeWithOutTime:[NSDate date]]])
title = [NSString stringWithFormat:NSLocalizedString(@"_today_", nil)];
}
return title;
}
+ (void)moveFileAtPath:(NSString *)atPath toPath:(NSString *)toPath
{
if ([[NSFileManager defaultManager] fileExistsAtPath:atPath]) {
[[NSFileManager defaultManager] removeItemAtPath:toPath error:nil];
[[NSFileManager defaultManager] copyItemAtPath:atPath toPath:toPath error:nil];
[[NSFileManager defaultManager] removeItemAtPath:atPath error:nil];
}
}
+ (void)copyFileAtPath:(NSString *)atPath toPath:(NSString *)toPath
{
if ([[NSFileManager defaultManager] fileExistsAtPath:atPath]) {
[[NSFileManager defaultManager] removeItemAtPath:toPath error:nil];
[[NSFileManager defaultManager] copyItemAtPath:atPath toPath:toPath error:nil];
}
}
+ (void)removeAllFileID_UPLOAD_ActiveUser:(NSString *)activeUser activeUrl:(NSString *)activeUrl
{
NSString *file;
NSString *dir;
dir = [self getDirectoryActiveUser:activeUser activeUrl:activeUrl];
NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager] enumeratorAtPath:dir];
while (file = [enumerator nextObject]) {
if ([file rangeOfString:@"ID_UPLOAD_"].location != NSNotFound)
[[NSFileManager defaultManager] removeItemAtPath:[NSString stringWithFormat:@"%@/%@", dir, file] error:nil];
}
}
+ (NSString *)deletingLastPathComponentFromServerUrl:(NSString *)serverUrl
{
//NSURL *url = [[NSURL URLWithString:[serverUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]] URLByDeletingLastPathComponent]; DEPRECATED iOS9
NSURL *url = [[NSURL URLWithString:[serverUrl stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]]] URLByDeletingLastPathComponent];
NSString *pather = [[url absoluteString] stringByRemovingPercentEncoding];
return [pather substringToIndex: [pather length] - 1];
}
+ (NSString *)returnFileNamePathFromFileName:(NSString *)metadataFileName serverUrl:(NSString *)serverUrl activeUrl:(NSString *)activeUrl
{
NSString *fileName = [NSString stringWithFormat:@"%@/%@", [serverUrl stringByReplacingOccurrencesOfString:[CCUtility getHomeServerUrlActiveUrl:activeUrl] withString:@""], metadataFileName];
if ([fileName hasPrefix:@"/"]) fileName = [fileName substringFromIndex:1];
return fileName;
}
+ (NSArray *)createNameSubFolder:(PHFetchResult *)alassets
{
NSMutableOrderedSet *datesSubFolder = [NSMutableOrderedSet new];
for (PHAsset *asset in alassets) {
NSDate *assetDate = asset.creationDate;
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyy"];
NSString *yearString = [formatter stringFromDate:assetDate];
if (yearString)
[datesSubFolder addObject:yearString];
[formatter setDateFormat:@"MM"];
NSString *monthString = [formatter stringFromDate:assetDate];
monthString = [NSString stringWithFormat:@"%@/%@", yearString, monthString];
if (monthString)
[datesSubFolder addObject:monthString];
}
return (NSArray *)datesSubFolder;
}
+ (BOOL)isDocumentModifiableExtension:(NSString *)fileExtension
{
// Use UPPERCASE extension :
return [@[@"TXT", @"MD", @"MARKDOWN", @"ORG"] containsObject:fileExtension];
}
#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== E2E Encrypted =====
#pragma --------------------------------------------------------------------------------------------
+ (NSString *)generateRandomIdentifier
{
NSString *UUID = [[NSUUID UUID] UUIDString];
return [[UUID stringByReplacingOccurrencesOfString:@"-" withString:@""] lowercaseString];
}
+ (BOOL)isFolderEncrypted:(NSString *)serverUrl account:(NSString *)account
{
BOOL depth = NO;
if (depth) {
NSArray *directories = [[NCManageDatabase sharedInstance] getTablesDirectoryWithPredicate:[NSPredicate predicateWithFormat:@"account == %@ AND e2eEncrypted == 1 AND serverUrl BEGINSWITH %@", account, serverUrl] sorted:@"serverUrl" ascending:false];
for (tableDirectory *directory in directories) {
if ([serverUrl containsString:directory.serverUrl])
return true;
}
} else {
tableDirectory *directory = [[NCManageDatabase sharedInstance] getTableDirectoryWithPredicate:[NSPredicate predicateWithFormat:@"account == %@ AND e2eEncrypted == 1 AND serverUrl == %@", account, serverUrl]];
if (directory != nil)
return true;
}
return false;
}
#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== CCMetadata =====
#pragma --------------------------------------------------------------------------------------------
+ (tableMetadata *)createMetadataWithAccount:(NSString *)account date:(NSDate *)date directory:(BOOL)directory fileID:(NSString *)fileID directoryID:(NSString *)directoryID fileName:(NSString *)fileName etag:(NSString *)etag size:(double)size status:(double)status
{
tableMetadata *metadata = [tableMetadata new];
metadata.account = account;
metadata.date = date;
metadata.directory = directory;
metadata.directoryID = directoryID;
metadata.etag = etag;
metadata.fileID = fileID;
metadata.fileName = fileName;
metadata.fileNameView = fileName;
metadata.size = size;
metadata.status = status;
[self insertTypeFileIconName:fileName metadata:metadata];
return metadata;
}
+ (tableMetadata *)trasformedOCFileToCCMetadata:(OCFileDto *)itemDto fileName:(NSString *)fileName serverUrl:(NSString *)serverUrl directoryID:(NSString *)directoryID autoUploadFileName:(NSString *)autoUploadFileName autoUploadDirectory:(NSString *)autoUploadDirectory activeAccount:(NSString *)activeAccount isFolderEncrypted:(BOOL)isFolderEncrypted
{
tableMetadata *metadata = [tableMetadata new];
NSString *fileNameView;
fileName = [CCUtility removeForbiddenCharactersServer:fileName];
fileNameView = fileName;
// E2EE find the fileName for fileNameView
if (isFolderEncrypted) {
tableE2eEncryption *tableE2eEncryption = [[NCManageDatabase sharedInstance] getE2eEncryptionWithPredicate:[NSPredicate predicateWithFormat:@"account == %@ AND serverUrl == %@ AND fileNameIdentifier == %@", activeAccount, serverUrl, fileName]];
if (tableE2eEncryption)
fileNameView = tableE2eEncryption.fileName;
}
metadata.account = activeAccount;
metadata.date = [NSDate dateWithTimeIntervalSince1970:itemDto.date];
metadata.e2eEncrypted = itemDto.isEncrypted;
metadata.directory = itemDto.isDirectory;
metadata.favorite = itemDto.isFavorite;
metadata.fileID = itemDto.ocId;
metadata.directoryID = directoryID;
metadata.fileName = fileName;
metadata.fileNameView = fileNameView;
metadata.iconName = @"";
metadata.permissions = itemDto.permissions;
metadata.etag = itemDto.etag;
metadata.size = itemDto.size;
metadata.sessionTaskIdentifier = k_taskIdentifierDone;
metadata.status = k_metadataStatusNormal;
metadata.typeFile = @"";
[self insertTypeFileIconName:fileNameView metadata:metadata];
return metadata;
}
+ (NSString *)insertTypeFileIconName:(NSString *)fileNameView metadata:(tableMetadata *)metadata
{
CFStringRef fileUTI = nil;
NSString *returnFileUTI = nil;
if ([fileNameView isEqualToString:@"."]) {
metadata.typeFile = k_metadataTypeFile_unknown;
metadata.iconName = @"file";
} else if (metadata.directory) {
metadata.typeFile = k_metadataTypeFile_directory;
fileUTI = kUTTypeFolder;
} else {
CFStringRef fileExtension = (__bridge CFStringRef)[fileNameView pathExtension];
NSString *ext = (__bridge NSString *)fileExtension;
ext = ext.uppercaseString;
fileUTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, fileExtension, NULL);
// thumbnailExists
if ([ext isEqualToString:@"JPG"] || [ext isEqualToString:@"PNG"] || [ext isEqualToString:@"JPEG"] || [ext isEqualToString:@"GIF"] || [ext isEqualToString:@"BMP"] || [ext isEqualToString:@"MP3"] || [ext isEqualToString:@"MOV"] || [ext isEqualToString:@"MP4"] || [ext isEqualToString:@"M4V"] || [ext isEqualToString:@"3GP"])
metadata.thumbnailExists = YES;
else
metadata.thumbnailExists = NO;
// Type image
if (UTTypeConformsTo(fileUTI, kUTTypeImage)) {
metadata.typeFile = k_metadataTypeFile_image;
metadata.iconName = @"file_photo";
}
// Type Video
else if (UTTypeConformsTo(fileUTI, kUTTypeMovie)) {
metadata.typeFile = k_metadataTypeFile_video;
metadata.iconName = @"file_movie";
}
// Type Audio
else if (UTTypeConformsTo(fileUTI, kUTTypeAudio)) {
metadata.typeFile = k_metadataTypeFile_audio;
metadata.iconName = @"file_audio";
}
// Type Document [DOC] [PDF] [XLS] [TXT] (RTF = "public.rtf" - ODT = "org.oasis-open.opendocument.text") + isDocumentModifiableExtension
else if (UTTypeConformsTo(fileUTI, kUTTypeContent) || [CCUtility isDocumentModifiableExtension:ext]) {
metadata.typeFile = k_metadataTypeFile_document;
metadata.iconName = @"document";
NSString *typeFile = (__bridge NSString *)fileUTI;
if ([typeFile isEqualToString:@"com.adobe.pdf"]) {
metadata.iconName = @"file_pdf";
}
if ([typeFile isEqualToString:@"org.openxmlformats.spreadsheetml.sheet"]) {
metadata.iconName = @"file_xls";
}
if ([typeFile isEqualToString:@"com.microsoft.excel.xls"]) {
metadata.iconName = @"file_xls";
}
if ([typeFile isEqualToString:@"public.plain-text"] || [CCUtility isDocumentModifiableExtension:ext]) {
metadata.iconName = @"file_txt";
}
if ([typeFile isEqualToString:@"public.html"]) {
metadata.iconName = @"file_code";
}
}
// Type compress
else if (UTTypeConformsTo(fileUTI, kUTTypeZipArchive) && [(__bridge NSString *)fileUTI containsString:@"org.openxmlformats"] == NO && [(__bridge NSString *)fileUTI containsString:@"oasis"] == NO) {
metadata.typeFile = k_metadataTypeFile_compress;
metadata.iconName = @"file_compress";
} else {
// Type unknown
metadata.typeFile = k_metadataTypeFile_unknown;
// icon uTorrent
if ([ext isEqualToString:@"TORRENT"]) {
metadata.iconName = @"utorrent";
} else {
metadata.iconName = @"file";
}
}
}
if (fileUTI != nil) {
returnFileUTI = (__bridge NSString *)fileUTI;
CFRelease(fileUTI);
}
return returnFileUTI;
}
+ (tableMetadata *)insertFileSystemInMetadata:(tableMetadata *)metadata
{
NSString *fileNamePath = [CCUtility getDirectoryProviderStorageFileID:metadata.fileID fileName:metadata.fileName];
NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:fileNamePath error:nil];
metadata.date = attributes[NSFileModificationDate];
metadata.size = [attributes[NSFileSize] longValue];
metadata.thumbnailExists = false;
[self insertTypeFileIconName:metadata.fileNameView metadata:metadata];
return metadata;
}
#pragma --------------------------------------------------------------------------------------------
#pragma mark ===== Third parts =====
#pragma --------------------------------------------------------------------------------------------
+ (NSString *)stringValueForKey:(id)key conDictionary:(NSDictionary *)dictionary
{
id obj = [dictionary objectForKey:key];
if ([obj isEqual:[NSNull null]]) return @"";
if ([obj isKindOfClass:[NSString class]]) {
return obj;
}
else if ([obj isKindOfClass:[NSNumber class]]) {
return [obj stringValue];
}
else {
return [obj description];
}
}
+ (NSString *)currentDevice
{
struct utsname systemInfo;
uname(&systemInfo);
NSString *deviceName=[NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
//NSLog(@"[LOG] Device Name :%@",deviceName);
return deviceName;
}
+ (NSString *)getExtension:(NSString*)fileName
{
NSMutableArray *fileNameArray =[[NSMutableArray alloc] initWithArray: [fileName componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"."]]];
NSString *extension = [NSString stringWithFormat:@"%@",[fileNameArray lastObject]];
extension = [extension uppercaseString];
//If the file has a ZIP extension obtain the previous one for check if it is a .pages.zip / .numbers.zip / .key.zip extension
if ([extension isEqualToString:@"ZIP"]) {
[fileNameArray removeLastObject];
NSString *secondExtension = [NSString stringWithFormat:@"%@",[fileNameArray lastObject]];
secondExtension = [secondExtension uppercaseString];
if ([secondExtension isEqualToString:@"PAGES"] || [secondExtension isEqualToString:@"NUMBERS"] || [secondExtension isEqualToString:@"KEY"]) {
extension = [NSString stringWithFormat:@"%@.%@",secondExtension,extension];
return extension;
}
}
return extension;
}
/*
* Util method to make a NSDate object from a string from xml
* @dateString -> Data string from xml
*/
+ (NSDate*)parseDateString:(NSString*)dateString
{
//Parse the date in all the formats
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
/*In most cases the best locale to choose is "en_US_POSIX", a locale that's specifically designed to yield US English results regardless of both user and system preferences. "en_US_POSIX" is also invariant in time (if the US, at some point in the future, changes the way it formats dates, "en_US" will change to reflect the new behaviour, but "en_US_POSIX" will not). It will behave consistently for all users.*/
[dateFormatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"]];
//This is the format for the concret locale used
[dateFormatter setDateFormat:@"EEE, dd MMM y HH:mm:ss zzz"];
NSDate *theDate = nil;
NSError *error = nil;
if (![dateFormatter getObjectValue:&theDate forString:dateString range:nil error:&error]) {
NSLog(@"[LOG] Date '%@' could not be parsed: %@", dateString, error);
}
return theDate;
}
+ (NSDate *)datetimeWithOutTime:(NSDate *)datDate
{
if (datDate == nil) return nil;
NSDateComponents* comps = [[NSCalendar currentCalendar] components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:datDate];
datDate = [[NSCalendar currentCalendar] dateFromComponents:comps];
return datDate;
}
+ (NSDate *)datetimeWithOutDate:(NSDate *)datDate
{
if (datDate == nil) return nil;
NSDateComponents* comps = [[NSCalendar currentCalendar] components:NSCalendarUnitHour|NSCalendarUnitMinute|NSCalendarUnitSecond fromDate:datDate];
return [[NSCalendar currentCalendar] dateFromComponents:comps];
}
+ (BOOL)isValidEmail:(NSString *)checkString
{
checkString = [checkString lowercaseString];
BOOL stricterFilter = YES;
NSString *stricterFilterString = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSString *laxString = @".+@.+\\.[A-Za-z]{2}[A-Za-z]*";
NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:checkString];
}
+ (NSString *)URLEncodeStringFromString:(NSString *)string
{
static CFStringRef charset = CFSTR("!@#$%&*()+'\";:=,/?[] ");
CFStringRef str = (__bridge CFStringRef)string;
CFStringEncoding encoding = kCFStringEncodingUTF8;
return (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(NULL, str, NULL, charset, encoding));
}
@end