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fix(ios): don't call urlSchemeTask methods if it was stopped #7453

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fix(ios): don't call urlSchemeTask methods if it was stopped #7453

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40c94e5
fix(ios): don't return data if task was stopped
jcesarmobile May 7, 2024
4845b09
remove cancel
jcesarmobile May 8, 2024
8419a84
use Set instead of Array
jcesarmobile May 8, 2024
60b6cac
use thread safe set
jcesarmobile May 8, 2024
7f356dd
fix(ios): Ensure lock is acquired when performing actions on the WKUR…
Steven0351 May 14, 2024
84127ef
run action in DispatchQueue.main.async
jcesarmobile May 22, 2024
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179 changes: 105 additions & 74 deletions ios/Capacitor/Capacitor/WebViewAssetHandler.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import MobileCoreServices
open class WebViewAssetHandler: NSObject, WKURLSchemeHandler {
private var router: Router
private var serverUrl: URL?
private var pendingTasks = ConcurrentTasks()

public init(router: Router) {
self.router = router
Expand All @@ -25,6 +26,7 @@ open class WebViewAssetHandler: NSObject, WKURLSchemeHandler {
}

open func webView(_ webView: WKWebView, start urlSchemeTask: WKURLSchemeTask) {
pendingTasks.insert(urlSchemeTask.hash)
let startPath: String
let url = urlSchemeTask.request.url!
let stringToLoad = url.path
Expand All @@ -47,67 +49,70 @@ open class WebViewAssetHandler: NSObject, WKURLSchemeHandler {
}

let fileUrl = URL.init(fileURLWithPath: startPath)
if self.pendingTasks.contains(urlSchemeTask.hash) {
do {
var data = Data()
let mimeType = mimeTypeForExtension(pathExtension: url.pathExtension)
var headers = [
"Content-Type": mimeType,
"Cache-Control": "no-cache"
]

do {
var data = Data()
let mimeType = mimeTypeForExtension(pathExtension: url.pathExtension)
var headers = [
"Content-Type": mimeType,
"Cache-Control": "no-cache"
]

// if using live reload, then set CORS headers
if isUsingLiveReload(localUrl) {
headers["Access-Control-Allow-Origin"] = self.serverUrl?.absoluteString
headers["Access-Control-Allow-Methods"] = "GET, HEAD, OPTIONS, TRACE"
}

if let rangeString = urlSchemeTask.request.value(forHTTPHeaderField: "Range"),
let totalSize = try fileUrl.resourceValues(forKeys: [.fileSizeKey]).fileSize,
isMediaExtension(pathExtension: url.pathExtension) {
let fileHandle = try FileHandle(forReadingFrom: fileUrl)
let parts = rangeString.components(separatedBy: "=")
let streamParts = parts[1].components(separatedBy: "-")
let fromRange = Int(streamParts[0]) ?? 0
var toRange = totalSize - 1
if streamParts.count > 1 {
toRange = Int(streamParts[1]) ?? toRange
// if using live reload, then set CORS headers
if isUsingLiveReload(localUrl) {
headers["Access-Control-Allow-Origin"] = self.serverUrl?.absoluteString
headers["Access-Control-Allow-Methods"] = "GET, HEAD, OPTIONS, TRACE"
}
let rangeLength = toRange - fromRange + 1
try fileHandle.seek(toOffset: UInt64(fromRange))
data = fileHandle.readData(ofLength: rangeLength)
headers["Accept-Ranges"] = "bytes"
headers["Content-Range"] = "bytes \(fromRange)-\(toRange)/\(totalSize)"
headers["Content-Length"] = String(data.count)
let response = HTTPURLResponse(url: localUrl, statusCode: 206, httpVersion: nil, headerFields: headers)
urlSchemeTask.didReceive(response!)
try fileHandle.close()
} else {
if !stringToLoad.contains("cordova.js") {

if let rangeString = urlSchemeTask.request.value(forHTTPHeaderField: "Range"),
let totalSize = try fileUrl.resourceValues(forKeys: [.fileSizeKey]).fileSize,
isMediaExtension(pathExtension: url.pathExtension) {
let fileHandle = try FileHandle(forReadingFrom: fileUrl)
let parts = rangeString.components(separatedBy: "=")
let streamParts = parts[1].components(separatedBy: "-")
let fromRange = Int(streamParts[0]) ?? 0
var toRange = totalSize - 1
if streamParts.count > 1 {
toRange = Int(streamParts[1]) ?? toRange
}
let rangeLength = toRange - fromRange + 1
try fileHandle.seek(toOffset: UInt64(fromRange))
data = fileHandle.readData(ofLength: rangeLength)
headers["Accept-Ranges"] = "bytes"
headers["Content-Range"] = "bytes \(fromRange)-\(toRange)/\(totalSize)"
headers["Content-Length"] = String(data.count)
let response = HTTPURLResponse(url: localUrl, statusCode: 206, httpVersion: nil, headerFields: headers)
urlSchemeTask.didReceive(response!)
try fileHandle.close()
} else {
if !stringToLoad.contains("cordova.js") {
if isMediaExtension(pathExtension: url.pathExtension) {
data = try Data(contentsOf: fileUrl, options: Data.ReadingOptions.mappedIfSafe)
} else {
data = try Data(contentsOf: fileUrl)
}
}
let urlResponse = URLResponse(url: localUrl, mimeType: mimeType, expectedContentLength: data.count, textEncodingName: nil)
let httpResponse = HTTPURLResponse(url: localUrl, statusCode: 200, httpVersion: nil, headerFields: headers)
if isMediaExtension(pathExtension: url.pathExtension) {
data = try Data(contentsOf: fileUrl, options: Data.ReadingOptions.mappedIfSafe)
urlSchemeTask.didReceive(urlResponse)
} else {
data = try Data(contentsOf: fileUrl)
urlSchemeTask.didReceive(httpResponse!)
}
}
let urlResponse = URLResponse(url: localUrl, mimeType: mimeType, expectedContentLength: data.count, textEncodingName: nil)
let httpResponse = HTTPURLResponse(url: localUrl, statusCode: 200, httpVersion: nil, headerFields: headers)
if isMediaExtension(pathExtension: url.pathExtension) {
urlSchemeTask.didReceive(urlResponse)
} else {
urlSchemeTask.didReceive(httpResponse!)
}
urlSchemeTask.didReceive(data)
} catch let error as NSError {
urlSchemeTask.didFailWithError(error)
self.pendingTasks.remove(urlSchemeTask.hash)
return
}
urlSchemeTask.didReceive(data)
} catch let error as NSError {
urlSchemeTask.didFailWithError(error)
return
urlSchemeTask.didFinish()
self.pendingTasks.remove(urlSchemeTask.hash)
}
urlSchemeTask.didFinish()
}

open func webView(_ webView: WKWebView, stop urlSchemeTask: WKURLSchemeTask) {
CAPLog.print("scheme stop")
pendingTasks.remove(urlSchemeTask.hash)
}

open func mimeTypeForExtension(pathExtension: String) -> String {
Expand Down Expand Up @@ -160,38 +165,41 @@ open class WebViewAssetHandler: NSObject, WKURLSchemeHandler {
return
}

if let response = response as? HTTPURLResponse {
let existingHeaders = response.allHeaderFields
var newHeaders: [AnyHashable: Any] = [:]
if self.pendingTasks.contains(urlSchemeTask.hash) {
if let response = response as? HTTPURLResponse {
let existingHeaders = response.allHeaderFields
var newHeaders: [AnyHashable: Any] = [:]

// if using live reload, then set CORS headers
if self.isUsingLiveReload(url) {
newHeaders = [
"Access-Control-Allow-Origin": self.serverUrl?.absoluteString ?? "",
"Access-Control-Allow-Methods": "GET, HEAD, OPTIONS, TRACE"
]
}
// if using live reload, then set CORS headers
if self.isUsingLiveReload(url) {
newHeaders = [
"Access-Control-Allow-Origin": self.serverUrl?.absoluteString ?? "",
"Access-Control-Allow-Methods": "GET, HEAD, OPTIONS, TRACE"
]
}

if let mergedHeaders = existingHeaders.merging(newHeaders, uniquingKeysWith: { (_, newHeaders) in newHeaders }) as? [String: String] {
if let mergedHeaders = existingHeaders.merging(newHeaders, uniquingKeysWith: { (_, newHeaders) in newHeaders }) as? [String: String] {

if let responseUrl = response.url {
if let modifiedResponse = HTTPURLResponse(
url: responseUrl,
statusCode: response.statusCode,
httpVersion: nil,
headerFields: mergedHeaders
) {
urlSchemeTask.didReceive(modifiedResponse)
if let responseUrl = response.url {
if let modifiedResponse = HTTPURLResponse(
url: responseUrl,
statusCode: response.statusCode,
httpVersion: nil,
headerFields: mergedHeaders
) {
urlSchemeTask.didReceive(modifiedResponse)
}
}
}

if let data = data {
urlSchemeTask.didReceive(data)
if let data = data {
urlSchemeTask.didReceive(data)
}
}
}
urlSchemeTask.didFinish()
self.pendingTasks.remove(urlSchemeTask.hash)
return
}
urlSchemeTask.didFinish()
return
}

task.resume()
Expand Down Expand Up @@ -546,3 +554,26 @@ open class WebViewAssetHandler: NSObject, WKURLSchemeHandler {
"zip": "application/x-zip-compressed"
]
}

private class ConcurrentTasks {
private var tasks: Set<Int>
private let lock = NSLock()

init() {
tasks = []
}

func contains(_ value: Int) -> Bool {
lock.withLock { tasks.contains(value) }
}

@discardableResult
func remove(_ value: Int) -> Int? {
lock.withLock { tasks.remove(value) }
}

@discardableResult
func insert(_ value: Int) -> (inserted: Bool, memberAfterInsert: Int) {
lock.withLock { tasks.insert(value) }
}
}