[pve-devel] [PATCH proxmox_dart_api_client v2 1/2] fix: ios: use `cupertino_http` package to honor custom user certificates

[Shan Shaji <s.shaji@proxmox.com>]

In iOS when a user installs a custom certificate and manually trusts it
from the certificate trust settings of iOS. The app was not
honoring the installed certificate [0] and was still throwing
`HandShakeException`.

The issue is because the `IOClient` doesn't by default honor user
installed certificate. To fix the issue, used the `cupertino_http` [1]
package which will honor the user installed certificates.
The `cupertino_http` package internally uses the native
iOS URL loading system [2].

- [0] https://support.apple.com/en-us/102390
- [1] https://pub.dev/packages/cupertino_http
- [2] https://developer.apple.com/documentation/foundation/url-loading-system

Signed-off-by: Shan Shaji <s.shaji@proxmox.com>
---
 changes since v1:
 - Rebased with master

 lib/src/utils_native.dart | 10 +++++++++-
 pubspec.lock              | 26 +++++++++++++++++++++++++-
 pubspec.yaml              |  1 +
 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/lib/src/utils_native.dart b/lib/src/utils_native.dart
index a4b7397..de66b31 100644
--- a/lib/src/utils_native.dart
+++ b/lib/src/utils_native.dart
@@ -1,4 +1,5 @@
 import 'package:cronet_http/cronet_http.dart';
+import 'package:cupertino_http/cupertino_http.dart';
 import 'package:http/http.dart' as http;
 import 'package:http/io_client.dart' as http_io;
 import 'dart:io';
@@ -6,9 +7,10 @@ import 'dart:io';
 http.Client getCustomIOHttpClient({bool validateSSL = true}) {
   var ioClient = HttpClient();
 
+  const cacheMaxSizeInBytes = 1024 * 1024;
   if (Platform.isAndroid && validateSSL) {
     final engine = CronetEngine.build(
-      cacheMaxSize: 1024 * 1024,
+      cacheMaxSize: cacheMaxSizeInBytes,
       cacheMode: CacheMode.memory,
     );
     return CronetClient.fromCronetEngine(
@@ -17,6 +19,12 @@ http.Client getCustomIOHttpClient({bool validateSSL = true}) {
     );
   }
 
+  if (Platform.isIOS && validateSSL) {
+    final config = URLSessionConfiguration.ephemeralSessionConfiguration()
+      ..cache = URLCache.withCapacity(memoryCapacity: cacheMaxSizeInBytes);
+    return CupertinoClient.fromSessionConfiguration(config);
+  }
+
   if (!validateSSL) {
     ioClient.badCertificateCallback =
         ((X509Certificate cert, String host, int port) {
diff --git a/pubspec.lock b/pubspec.lock
index 6496e27..9a754ea 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -177,6 +177,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.3"
+  cupertino_http:
+    dependency: "direct main"
+    description:
+      name: cupertino_http
+      sha256: "72187f715837290a63479a5b0ae709f4fedad0ed6bd0441c275eceaa02d5abae"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
   dart_style:
     dependency: transitive
     description:
@@ -358,6 +366,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.2"
+  objective_c:
+    dependency: transitive
+    description:
+      name: objective_c
+      sha256: "9f034ba1eeca53ddb339bc8f4813cb07336a849cd735559b60cdc068ecce2dc7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.1.0"
   package_config:
     dependency: transitive
     description:
@@ -595,6 +611,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.5.1"
+  web_socket:
+    dependency: transitive
+    description:
+      name: web_socket
+      sha256: "34d64019aa8e36bf9842ac014bb5d2f5586ca73df5e4d9bf5c936975cae6982c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.1"
   web_socket_channel:
     dependency: transitive
     description:
@@ -621,4 +645,4 @@ packages:
     version: "3.1.2"
 sdks:
   dart: ">=3.7.0 <4.0.0"
-  flutter: ">=3.22.0"
+  flutter: ">=3.24.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 3aa881b..c864606 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,6 +11,7 @@ dependencies:
   built_collection: ^5.1.1
   retry: ^3.1.0
   cronet_http: ^1.5.0
+  cupertino_http: ^2.3.0
 
 dev_dependencies:
   lints: ^3.0.0
-- 
2.50.1



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