I'm using the OAuthSwift library to authenticate users of my app, but something doesn't seem to be working as it throws an error. After some debugging it seems to be going wrong on this line: parameters = url.query!.parametersFromQueryString()
It does have the url query string (set to url.query) but it somehow fails parsing the parametersFromQueryString(). Does someone else have this problem (with this library) and how did you solve it?
The "parametersFromQueryString" function can be found here: https://github.com/dongri/OAuthSwift/blob/1babc0f465144411c0dd9721271f239685ce83a9/OAuthSwift/String%2BOAuthSwift.swift
Create an extension of URL class and paste this code:
import Foundation
extension URL {
public var parametersFromQueryString : [String: String]? {
guard let components = URLComponents(url: self, resolvingAgainstBaseURL: true),
let queryItems = components.queryItems else { return nil }
return queryItems.reduce(into: [String: String]()) { (result, item) in
result[item.name] = item.value
}
}}
Now you can get the value of this calculated attribute from URL object by simply using:
url.parametersFromQueryString
Have you checked that url.query returns anything? and that it is url decoded before/after calling url.query?
try looking at the answers here:
URL decode in objective-c
If the method is looking for characters such as '?' or '=' and the URL is still encoded, it might not find them
Here is the same code as it should look like in swift:
let URLString = "http://sound17.mp3pk.com/indian/barfi/%5BSongs.PK%5D%20Barfi%20-%2001%20-%20Barfi!.mp3"
let URL = NSURL(string:url)
let filename = URL.path.lastPathComponent.stringByReplacingPercentEscapesUsingEncoding(NSUTF8StringEncoding)
//=> [Songs.PK] Barfi - 01 - Barfi!.mp3
Related
I'm trying to obtain an auth code from Stripe's OAuth endpoint using ASWebAuthenticationSession - this event happens after the my Stripe redirect url gets called.
Unfortunately, the authSession's completion handler doesn't call back with a callbackURL. And I need this callbackURL to query the auth code. I've read different articles on this topic but I can't figure out why my implementation doesn't work they way I expect it to.
Here's my code:
class CreateStripeConnectAccountController: UIViewController {
var authSession: ASWebAuthenticationSession!
override func viewDidLoad() {
super.viewDidLoad()
configureAuthSession()
}
private func configureAuthSession() {
let urlString = Constants.URLs.stripeConnectOAuth // Sample URL
guard let url = URL(string: urlString) else { return }
let callbackScheme = "myapp:auth"
authSession = ASWebAuthenticationSession(url: url, callbackURLScheme: callbackScheme, completionHandler: { (callbackURL, error) in
guard error == nil, let successURL = callbackURL else {
print("Nothing")
return
}
let oauthToken = NSURLComponents(string: (successURL.absoluteString))?.queryItems?.filter({$0.name == "code"}).first
print(successURL.absoluteString)
})
authSession.presentationContextProvider = self
authSession.start()
}
}
extension CreateStripeConnectAccountController: ASWebAuthenticationPresentationContextProviding {
func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
self.view.window ?? ASPresentationAnchor()
}
}
I believe the issue is that you are giving nil for callbackURLScheme. You need to give a URL scheme that redirects to your app:
See apple's authentication example: https://developer.apple.com/documentation/authenticationservices/authenticating_a_user_through_a_web_service
And here's apple's docs on how to create a custom URL scheme for your app: https://developer.apple.com/documentation/uikit/inter-process_communication/allowing_apps_and_websites_to_link_to_your_content/defining_a_custom_url_scheme_for_your_app.
I know it's old, but anyway.
Make sure, that callbackScheme and scheme that is used in redirect_uri are the same.
Your callbackScheme myapp:auth is incorrect format.
The symbol : cannot be used in the scheme name of a URI.
See the following RFC definition of Scheme.
Scheme names consist of a sequence of characters beginning with a
letter and followed by any combination of letters, digits, plus
("+"), period ("."), or hyphen ("-").
https://datatracker.ietf.org/doc/html/rfc3986#section-3.1
Thefore, revising the callbackURLscheme as myapp-auth or myapp.auth works well.
try setting your callbackScheme = "myapp" to receive callback
and from your server-side it should return "myapp://auth?token=1234"
Hope it helps.
We are facing the following networking error when the response is somehow large(14kb) on iOS 13.
[-1103] Error Domain=NSURLErrorDomain Code=-1103 "resource exceeds maximum size"
As we are using Alamofire, this problem is treated as error result which breaks our treatments of the results.
The strange thing is that if we use NSURLSession directly, though this error is still seen from logging, we don't actually receive it in the callback of
session.dataTask(with: request) { value, response, error in ... }
So the result can treated correctly.
This problem is never seen before. Anyone has got some idea on that ?
With the help of the Slack community, we find the answer is that
on iOS13, it is not allowed to add a body in GET request. To make it work again, we can either switch to a POST/PUT request or add body value via url parameters of the GET request.
Pass query parameters in GET request like the following:
let parameters: Parameters = [
"param": value
]
Alamofire.request(urlString, method: .get, parameters: parameters, encoding: URLEncoding.queryString)
I have face same issue and find out the solution.
You can't pass parameter in body while using GET.
Either use POST method if API support or pass it in URL like below.
AnyURL?Parameter=Value&Parameter=Value
Finally found the answer. For GET services I was trying to add an httpBody. Something like this:
do {
request.httpBody = try JSONSerialization.data(withJSONObject: parameters, options: .prettyPrinted)
} catch let error {
errorCompletion(error)
return
}
The solution was just to add an if to avoid that chunk of code if httpMethod is a GET. Seems like an iOS 13 new behavior and the error message given by Swift definitely not helps at all
Alamofire: You should try this!
Alamofire.request(urlString, method: .get, parameters: parameters, encoding: URLEncoding.queryString)
Just avoid the httpBody for the GET API request.
if requestType != .get{
request.httpBody = data
}
#OR
For GET request append parameter into URL instead of the HTTP body
Use the below extension to create a query parameter from the dictionary.
extension NSObject {
func buildQueryString(fromDictionary parameters: [String:String]) -> String {
var urlVars = [String]()
for (var k, var v) in parameters {
let characters = (CharacterSet.urlQueryAllowed as NSCharacterSet).mutableCopy() as! NSMutableCharacterSet
characters.removeCharacters(in: "&")
v = v.addingPercentEncoding(withAllowedCharacters: characters as CharacterSet)!
k = k.addingPercentEncoding(withAllowedCharacters: characters as CharacterSet)!
urlVars += [k + "=" + "\(v)"]
}
return (!urlVars.isEmpty ? "?" : "") + urlVars.joined(separator: "&")
}
}
I used default url encoding instead of default json encoding and it's worked for me.
Alamofire.request(url, method: .get, parameters: param, encoding: URLEncoding.default)
OR
If you using URLRequestConvertible
enum NetworkRouter: URLRequestConvertible {
case someCase(lang:String)
var method: HTTPMethod {
return .get
}
var parameters: Parameters? {
switch self {
case .someCase(let param):
return ["lang": param.lang]
default:
return nil
}
}
var url: URL {
switch self {
case .someCase(let param):
return URL(string: Constants.baseURL + Constants.endPoint)!
default:
return URL(string: Constants.baseURL)!
}
}
var encoding: ParameterEncoding {
return URLEncoding.default
}
func asURLRequest() throws -> URLRequest {
var urlRequest = URLRequest(url: url)
urlRequest.httpMethod = method.rawValue
return try encoding.encode(urlRequest, with: parameters)
}
}
I got that issue because i pass empty parameters in Alamofire when send get request. So, instead of sending empty parameters i simply replace it for nil.
My fix is I only set .parameters to nil, then everything works fine. Because in Swift it still initialize the value of .parameters.
self.request.parameters = nil
Here you might have missing the method of the URL request that you are passing to data task. You have to add POST/PUT/DELETE to the URL request method parameter like below.
var request: URLRequest = URLRequest(url: SOME_VALID_URL)
request.body = SOME_VALID_DATA_IN_BYTES
request.method = "post" --> You are missing this.
I only see this issue when I build with Xcode 11. If I revert back to Xcode 10.3 I do not have the same issue anymore. While not a forever fix, if you're needing to push out code you can revert until you have time to fix it.
Here is my request of my api
http://xxxxxxxxxxxxxx/Service/GetEntry.aspx?FromDate=01/08/2018&RID=1&ToDate=25/10/2018&TokenID=1e731b96-4261-453b-848c-5b1a0d44f808
But my original request is like
http://xxxxxxxxxxxxx/Service1/GetEntry.aspx?TokenID=5edc678f-82ee-4cf8-956e-5f1d3798dfec&RID=1&FromDate=01%2F08%2F2018&ToDate=25%2F10%2F2018
Here are my request param and api call
var param = [String:Any]()
param["TokenID"] = tokenId
param["RID"] = Rid
param["FromDate"] = DateUtilities.convertStringfromDate(date: DateUtilities.getDateofMonthStartOfLast2Month())
param["ToDate"] = DateUtilities.convertStringfromDate(date: Date())
print(param)
// Network request
Alamofire.request(finalURL, method: .post, parameters: param, encoding: URLEncoding.queryString, headers: headers).responseJSON { (response: DataResponse<Any>) in
// check result is success
guard response.result.isSuccess else {
failure((response.result.error?.localizedDescription)!,"100")
return
}
if let arrResponse = response.result.value as? [[String: Any]]{
// get status code
if arrResponse[0]["Status"] as? String ?? "" == "Error"{
let statusCode = arrResponse[0][Constants.ResponseKey.code] as? String ?? "0"
if statusCode == "8"{
//Call logout api
ApplicationData.sharedInstance.logoutUser()
return
}
// get status message
let message = arrResponse[0][Constants.ResponseKey.message] as? String ?? ""
failure(message,statusCode)
return
}
success(arrResponse, "")
return
}
}
But due to sequence mismatch I do not get as per desired response, I am getting error in api response.Here I think it is problem of alamofire which taking parameters in sorting into querystring. How can I avoid sorting in request?
Please help me with it.
Apparently this is a closed issue on Alamofire already Follow this link.
Unfortunately Swift's dictionaries aren't order preserving, so there's
no way to currently accomplish this.
Alamofire currently encodes URL parameters in alphabetical order, but
there's no way to preserve an arbitrary ordering in the dictionary. So
unless the order is want is a sort of some kind, or the arbitrary
ordering of the dictionary.
I am trying to open an Excel document that is located on a server. I wrote the following code but it always returns false for UIApplication.shared.canOpenURL(url as URL)
I think I am missing some requirement for deep linking to Excel. Why is iOS not able to understand ms-excel:ofe|u| format?
#objc static func openExcel() {
let originalString = "http://s000.tinyupload.com/download.php?file_id=23290165129849240725&t=2329016512984924072514118"
let encodedString = originalString.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)
let encodedURLString = "ms-excel:ofe|u|" + encodedString! + "|n|TestDoc.xlsx|a|App"
if let url = NSURL(string: encodedURLString),
UIApplication.shared.canOpenURL(url as URL) {
UIApplication.shared.openURL(url as URL)
} else if let itunesUrl = NSURL(string: "https://itunes.apple.com/us/app/microsoft-excel/id586683407?mt=8&uo=4"), UIApplication.shared.canOpenURL(itunesUrl as URL) {
UIApplication.shared.openURL(itunesUrl as URL)
}
}
I have analyzed your code and found some mistakes. First, your URL was redirecting to somewhere, as per Microsoft documentation it can't handle redirecting URL's
The URL has to be encoded and must be a direct link to the file (not a
redirect). If the URL is in a format that Office cannot handle, or the
download simply fails, Office will not return the user to the invoking
application.
Here is Microsoft Documentation Link
The second mistake was you are only encoding the URL string containing site URL, you should consider the part after the scheme ms-excel: as a URL and should be encoded.
Because of improper encoding the let url = URL(string: encodedURLString) results nil that's why it is not working as expected.
Here is an example working code:
#objc static func openExcel() {
//replace the below url with yours. may be this one dosen't work
let originalString = "ofe|u|https://pgcconline.blackboard.com/webapps/dur-browserCheck-bb_bb60/samples/sample.xlsx"
let encodedString = originalString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
let encodedURLString = "ms-excel:" + encodedString!
if let url = URL(string: encodedURLString),
UIApplication.shared.canOpenURL(url) {
UIApplication.shared.openURL(url)
} else if let itunesUrl = NSURL(string: "https://itunes.apple.com/us/app/microsoft-excel/id586683407?mt=8&uo=4"), UIApplication.shared.canOpenURL(itunesUrl as URL) {
UIApplication.shared.openURL(itunesUrl as URL)
}
}
Note: From iOS 9 you must whitelist any URL schemes your App wants to query in Info.plist under the LSApplicationQueriesSchemes key (an array of strings):
For example in our case:
When i try to open the URL in the question above I get redirected to this URL, so my guess would be that your code is fine, it just might be that your excel file you're trying to open is really an HTML page since tinyupload apparently blocks direct links to the files.
Maybe try opening a direct excel file download link, https://pgcconline.blackboard.com/webapps/dur-browserCheck-bb_bb60/samples/sample.xlsx (it was the first google result for 'xlsx file sample download')
I use the moya make the post request,but when I send the post , the server give me an error, it can't decoding the body parameters.I use URLEncoding.default to encode the parameters like this
public var parameterEncoding: ParameterEncoding {
return URLEncoding.default
}
It will set the content-type application/x-www-form-urlencoded, and the server accept content type is same too
if parameters is a dictionary like this {"a":"b"} ,that is working well, but if dictionary contained array or another dictionary ,the server can't get the parameters from request body.
EX:
{
"a":"xxx",
"b":[
"xxxxx",
"xxxxx"
]
}
alamofire will encode this like
"a"="xxx"&b[]=xxxx&b[]=xxx
but the server expect a=xxx&b[0]=xxx&b[1]=xxxx
how to solve this problem ?
You can build the parameter string manually, and then link the parameter string to Url string. Finally, just make request with url by Alamofire, without any parameters(they are in url already).
The way to build parameter string:
let dict = ["a":"xxx","b":["xxx","xxxxxxx"]] as [String : Any]
var paramString = ""
for key in dict.keys {
let value = dict[key]
if let stringValue = value as? String {
paramString += "&\(key)=\(stringValue)"
}
else if let arr = value as? Array<String> {
for i in 0 ... arr.count - 1 {
paramString += "&\(key)[\(i)]=\(arr[i])"
}
}
else{
//other type?
}
}
if paramString.characters.count > 0 {
paramString = paramString.substring(from: paramString.index(paramString.startIndex, offsetBy: 1))
}
print(paramString)
//output is: b[0]=xxx&b[1]=xxxxxxx&a=xxx