OpenEuiccService: Don't ignore the only removable eUICC (#358)

`shouldIgnoreSlot()` returns **true for slots to ignore**. On devices without an internal eUICC, its own comment says it should *expose* the first removable eUICC to the system:

```kotlin
// Otherwise, we can report at least one removable eUICC to the system without confusing it too much.
telephonyManager.uiccCardsInfoCompat.firstOrNull { it.isEuicc }?.physicalSlotIndex == physicalSlotId
```

The comparison is inverted, so exactly that slot is ignored. Every `EuiccService` call on it (`onGetEid`, `onGetDownloadableSubscriptionMetadata`, `onDownloadSubscription`, `onSwitchToSubscription…`) returns `RESULT_FIRST_USER` within a few milliseconds.

**How it showed up:** on a Samsung Galaxy S21 (SM-G991B, LineageOS 23.2, OpenEUICC as system LPA), the Samsung RIL reports the built-in eUICC as *removable* (`isRemovable=true`), so `hasInternalEuicc` is false. `EuiccManager` downloads from carrier apps failed immediately. The log showed `OpenEuiccService: onGetDownloadableSubscriptionMetadata slotId=1 portIndex=0 ...`, and 11 ms later the call returned an error to EuiccController without a single APDU being sent (the app showed its generic install error). Meanwhile the same eUICC worked fine inside the OpenEUICC UI, which doesn't go through `shouldIgnoreSlot()`.

**Fix:** `==` → `!=`.

**Testing:** with the fix, the platform download flow reaches the eUICC (metadata → carrier-privilege check → download). On 2026-09-27 a travel-eSIM provider's app installed its profile end to end through `EuiccManager` on that phone (the app-side changes are in a separate PR).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: #358
Co-authored-by: Macktherealonereally <macdev@mackthessd.org>
Co-committed-by: Macktherealonereally <macdev@mackthessd.org>

.editorconfig

@@ -0,0 +1,22 @@
+root = true
+
+[*]
+charset = utf-8
+indent_size = 2
+indent_style = space
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+max_line_length = 120
+
+[*.{kt,java}]
+indent_size = 4
+
+[*.gradle.kts]
+indent_size = 4
+
+[*.xml]
+indent_size = 4
+
+[.idea/**/*.xml]
+indent_size = 2

.forgejo/workflows/build-debug.yml

@@ -0,0 +1,62 @@
+name: Build Debug APKs
+
+on:
+  push:
+    branches:
+      - '*'
+    tags:
+      - '*'
+
+jobs:
+  build-debug:
+    runs-on: [ docker, android-app-certs ]
+    container:
+      volumes:
+        - android-app-keystore:/keystore
+    steps:
+      - name: Repository Checkout
+        uses: https://gitea.angry.im/actions/checkout@v3
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Decode Secret Signing Configuration
+        uses: https://gitea.angry.im/actions/base64-to-file@v1
+        with:
+          fileName: keystore.properties
+          fileDir: ${{ env.GITHUB_WORKSPACE }}
+          encodedString: ${{ secrets.OPENEUICC_SIGNING_CONFIG }}
+
+      - name: Set up JDK 17
+        uses: https://gitea.angry.im/actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Setup Android SDK
+        uses: https://gitea.angry.im/actions/setup-android@v4
+
+      - name: Run Tests
+        run: ./gradlew --no-daemon test
+
+      - name: Build Debug APKs
+        run: ./gradlew --no-daemon assembleDebug :app:assembleDebugMagiskModuleDir
+
+      - name: Copy Artifacts
+        run: |
+          find . -name 'app*-debug.apk' -exec cp {} . \;
+          cp -r app/build/magisk/debug ./magisk-debug
+
+      - name: Upload APK Artifacts
+        uses: https://gitea.angry.im/actions/upload-artifact@v3
+        with:
+          name: Debug APKs
+          compression-level: 0
+          path: app*-debug.apk
+
+      - name: Upload Magisk Artifacts
+        uses: https://gitea.angry.im/actions/upload-artifact@v3
+        with:
+          name: magisk-debug
+          compression-level: 0
+          path: magisk-debug

.forgejo/workflows/release.yml

@@ -0,0 +1,57 @@
+name: Build Release
+
+on:
+  push:
+    tags: '*'
+
+jobs:
+  release:
+    runs-on: [ docker, android-app-certs ]
+    container:
+      volumes:
+        - android-app-keystore:/keystore
+    steps:
+      - name: Repository Checkout
+        uses: https://gitea.angry.im/actions/checkout@v3
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Decode Secret Signing Configuration
+        uses: https://gitea.angry.im/actions/base64-to-file@v1
+        with:
+          fileName: keystore.properties
+          fileDir: ${{ env.GITHUB_WORKSPACE }}
+          encodedString: ${{ secrets.OPENEUICC_SIGNING_CONFIG }}
+
+      - name: Set up JDK 17
+        uses: https://gitea.angry.im/actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Setup Android SDK
+        uses: https://gitea.angry.im/actions/setup-android@v4
+
+      - name: Run Tests
+        run: ./gradlew --no-daemon test
+
+      - name: Build Release APK (Unprivileged / EasyEUICC only)
+        run: ./gradlew --no-daemon :app-unpriv:assembleRelease
+
+      - name: Copy Debug Symbols to Release Path
+        run: cp app-unpriv/build/outputs/native-debug-symbols/release/native-debug-symbols.zip app-unpriv/build/outputs/apk/release/
+
+      - name: Create Release
+        uses: https://gitea.angry.im/actions/forgejo-release@v2
+        with:
+          direction: upload
+          release-dir: app-unpriv/build/outputs/apk/release
+          url: https://gitea.angry.im
+          token: ${{ secrets.FORGEJO_TOKEN }}
+          # Release details are expected to be edited manually
+          release-notes: TBD
+          prerelease: 'true'
+          title: TBD ${{ github.ref_name }}
+          tag: ${{ github.ref_name }}
+          verbose: true

.gitignore

@@ -1,17 +1,12 @@
-*.iml
-.gradle
-/local.properties
-/keystore.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
-.DS_Store
-/build
+/.gradle
 /captures
-.externalNativeBuild
-.cxx
-local.properties
-/libs/**/build
+/build
+
+# Configuration files
+
+/keystore.properties
+/local.properties
+
+# macOS
+
+.DS_Store

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "libs/lpac-jni/src/main/jni/lpac"]
 	path = libs/lpac-jni/src/main/jni/lpac
-	url = https://github.com/estkme/lpac
+	url = https://github.com/estkme-group/lpac.git
+[submodule "libs/lpac-jni/src/main/jni/cJSON"]
+	path = libs/lpac-jni/src/main/jni/cjson/cjson
+	url = https://github.com/DaveGamble/cJSON

.idea/.gitignore

@@ -1,3 +1,7 @@
-# Default ignored files
-/shelf/
-/workspace.xml
+*
+!/codeStyles/Project.xml
+!/codeStyles/codeStyleConfig.xml
+!/vcs.xml
+!/kotlinc.xml
+!/compiler.xml
+!/migrations.xml

.idea/codeStyles/Project.xml

@@ -0,0 +1,162 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JavaCodeStyleSettings>
+      <option name="IMPORT_LAYOUT_TABLE">
+        <value>
+          <package name="android" withSubpackages="true" static="true" />
+          <package name="androidx" withSubpackages="true" static="true" />
+          <package name="com" withSubpackages="true" static="true" />
+          <package name="junit" withSubpackages="true" static="true" />
+          <package name="net" withSubpackages="true" static="true" />
+          <package name="org" withSubpackages="true" static="true" />
+          <package name="java" withSubpackages="true" static="true" />
+          <package name="javax" withSubpackages="true" static="true" />
+          <package name="" withSubpackages="true" static="true" />
+          <emptyLine />
+          <package name="android" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="androidx" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="com" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="junit" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="net" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="org" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="java" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="javax" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="" withSubpackages="true" static="false" />
+          <emptyLine />
+        </value>
+      </option>
+    </JavaCodeStyleSettings>
+    <JetCodeStyleSettings>
+      <option name="PACKAGES_TO_USE_STAR_IMPORTS">
+        <value>
+          <package name="im.angry.openeuicc.util" alias="false" withSubpackages="true" />
+        </value>
+      </option>
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <codeStyleSettings language="XML">
+      <option name="FORCE_REARRANGE_MODE" value="1" />
+      <indentOptions>
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+      </indentOptions>
+      <arrangement>
+        <rules>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:android</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:id</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>style</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>ANDROID_ATTRIBUTE_ORDER</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>.*</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+        </rules>
+      </arrangement>
+    </codeStyleSettings>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

.idea/compiler.xml

@@ -1,12 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="1.7">
-      <module name="OpenEUICC.app" target="17" />
-      <module name="OpenEUICC.app-common" target="17" />
-      <module name="OpenEUICC.app-unpriv" target="17" />
-      <module name="OpenEUICC.libs.hidden-apis-shim" target="17" />
-      <module name="OpenEUICC.libs.lpac-jni" target="17" />
-    </bytecodeTargetLevel>
+    <bytecodeTargetLevel target="21" />
   </component>
 </project>

.idea/gradle.xml

@@ -1,27 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleMigrationSettings" migrationVersion="1" />
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="testRunner" value="GRADLE" />
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleHome" value="/usr/share/java/gradle" />
-        <option name="gradleJvm" value="jbr-17" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-            <option value="$PROJECT_DIR$/app-common" />
-            <option value="$PROJECT_DIR$/app-unpriv" />
-            <option value="$PROJECT_DIR$/libs" />
-            <option value="$PROJECT_DIR$/libs/hidden-apis-shim" />
-            <option value="$PROJECT_DIR$/libs/hidden-apis-stub" />
-            <option value="$PROJECT_DIR$/libs/lpac-jni" />
-          </set>
-        </option>
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>

.idea/kotlinc.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.9.20" />
+    <option name="externalSystemId" value="Gradle" />
+    <option name="version" value="2.3.20" />
   </component>
 </project>

.idea/migrations.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectMigrations">
+    <option name="MigrateToGradleLocalJavaHome">
+      <set>
+        <option value="$PROJECT_DIR$" />
+      </set>
+    </option>
+  </component>
+</project>

.idea/misc.xml

@@ -1,25 +0,0 @@
-<project version="4">
-  <component name="DesignSurface">
-    <option name="filePathToZoomLevelMap">
-      <map>
-        <entry key="app/src/main/res/drawable/ic_add.xml" value="0.2015" />
-        <entry key="app/src/main/res/layout/activity_main.xml" value="0.19375" />
-        <entry key="app/src/main/res/layout/euicc_profile.xml" value="0.19375" />
-        <entry key="app/src/main/res/layout/fragment_euicc.xml" value="0.19375" />
-        <entry key="app/src/main/res/layout/fragment_profile_download.xml" value="0.19375" />
-        <entry key="app/src/main/res/layout/fragment_profile_rename.xml" value="0.19375" />
-        <entry key="app/src/main/res/menu/activity_main.xml" value="0.19375" />
-        <entry key="app/src/main/res/menu/activity_main_slot_spinner.xml" value="0.19375" />
-        <entry key="app/src/main/res/menu/fragment_profile_download.xml" value="0.19375" />
-        <entry key="app/src/main/res/menu/fragment_profile_rename.xml" value="0.19375" />
-        <entry key="app/src/main/res/menu/profile_options.xml" value="0.19375" />
-      </map>
-    </option>
-  </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>

.idea/vcs.xml

@@ -2,6 +2,7 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/libs/lpac-jni/src/main/jni/cjson/cjson" vcs="Git" />
     <mapping directory="$PROJECT_DIR$/libs/lpac-jni/src/main/jni/lpac" vcs="Git" />
   </component>
 </project>

Android.bp

@@ -6,26 +6,20 @@ java_library {
     optimize: {
         enabled: false,
     },
+    static_libs: [
+        "kotlinx_coroutines",
+        "androidx.core_core-ktx",
+    ],
     system_ext_specific: true,
 }
 
 android_library {
     name: "OpenEUICC-common",
+    defaults: [
+        "OpenEUICC-deps-defaults",
+    ],
     static_libs: [
         "net.typeblog.lpac_jni",
-
-        // Dependencies that must be pulled from maven,
-        "zxing-core-prebuilt-jar",
-        "zxing-android-embedded-prebuilt-aar",
-
-        // Dependencies included with AOSP
-        "androidx.appcompat_appcompat",
-        "androidx.cardview_cardview",
-        "androidx-constraintlayout_constraintlayout",
-        "androidx.core_core-ktx",
-        "androidx.lifecycle_lifecycle-runtime-ktx",
-        "androidx.swiperefreshlayout_swiperefreshlayout",
-        "com.google.android.material_material",
         "kotlinx_coroutines",
     ],
     srcs: [
@@ -37,6 +31,9 @@ android_library {
     resource_dirs: [
         "app-common/src/main/res",
     ],
+    kotlincflags: [
+        "-opt-in=kotlin.ExperimentalStdlibApi",
+    ],
     manifest: "app-common/src/main/AndroidManifest.xml",
     system_ext_specific: true,
 }

COPYING

@@ -1,7 +0,0 @@
-Copyright 2022 Peter Cai & Pierre-Hugues Husson
-
-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, version 2.
-
-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 <https://www.gnu.org/licenses/>. 

LICENSE

@@ -1,281 +1,622 @@
                     GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+                       Version 3, 29 June 2007
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
                             Preamble
 
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
 your programs, too.
 
   When we speak of free software, we are referring to freedom, not
 price.  Our General Public Licenses are designed to make sure that you
 have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
 
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
 
   For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have.  You must make sure that they, too, receive or can get the
-source code.  And you must show them these terms so they know their
-rights.
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
 
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
 
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
 
-  Finally, any free program is threatened constantly by software
-patents.  We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary.  To prevent this, we have made it clear that any
-patent must be licensed for everyone's free use or not licensed at all.
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
 
   The precise terms and conditions for copying, distribution and
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-                    GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+                       TERMS AND CONDITIONS
 
-  0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
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+  2. Basic Permissions.
 
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+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
 
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
+  13. Use with the GNU Affero General Public License.
 
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
+  14. Revised Versions of this License.
 
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
 
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-                            NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
+  15. Disclaimer of Warranty.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
 
                      END OF TERMS AND CONDITIONS
 
@@ -287,15 +628,15 @@ free software which everyone can redistribute and change under these terms.
 
   To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
+state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
     <one line to give the program's name and a brief idea of what it does.>
     Copyright (C) <year>  <name of author>
 
-    This program is free software; you can redistribute it and/or modify
+    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 2 of the License, or
+    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,
@@ -303,37 +644,31 @@ the "copyright" line and a pointer to where the full notice is found.
     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, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
 
 The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
 
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
 
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,17 +1,56 @@
-{Open,Easy}EUICC
----
+<img src="https://gitea.angry.im/PeterCxy/OpenEUICC/media/branch/master/art/OpenEUICCBG.svg" width="512" height="300">
 
 A fully free and open-source Local Profile Assistant implementation for Android devices.
 
-There are two variants of this project:
+__Google is threatening to lock down the Android platform in 2026. OpenEUICC and EasyEUICC, as Free Software projects, will never accept Google's proposed third-party developer verification flow. Join us in Keeping Android Open at <https://keepandroidopen.org/>.__
 
-- OpenEUICC: The full-flegded privileged variant. Intended to be run as a privileged system app (inside `/system/priv-app`) and serve as the system LPA. This can be used to manage all kinds of eSIM chips, embedded or removable.
-- EasyEUICC: Unprivileged version that can run as a user app. An eSIM chip must include the certificate of EasyEUICC in its ARA-M field in order to grant access without system privileges. This is intended for removable eSIM chips such as those provided by eSTK.
-  - Prebuilt EasyEUICC apks can be downloaded [here](https://gitea.angry.im/PeterCxy/OpenEUICC/releases)
-  - For removable eSIM chip vendors: to have your chip supported by official builds of EasyEUICC, include the ARA-M hash `2A2FA878BC7C3354C2CF82935A5945A3EDAE4AFA`
+There are two variants of this project, OpenEUICC and [EasyEUICC](https://easyeuicc.org):
 
-Building
-===
+|                               |            OpenEUICC            |      EasyEUICC      |
+|:------------------------------|:-------------------------------:|:-------------------:|
+| Privileged                    | Must be installed as system app |         No          |
+| Internal eSIM                 |            Supported            |     Unsupported     |
+| External eSIM [^1]            |            Supported            |      Supported      |
+| USB Readers                   |            Supported            |      Supported      |
+| Requires allowlisting by eSIM |               No                |  Yes -- except USB  |
+| System Integration            |          Partial [^2]           |         No          |
+| Minimum Android Version       |      Android 11 or higher       | Android 9 or higher |
+
+[^1]: Also known as "Removable eSIM"
+[^2]: Carrier Partner API unimplemented yet
+
+Some side notes:
+
+1. When privileged, OpenEUICC supports any eUICC chip that implements the [SGP.22] standard, internal or external.
+   However, there is **no guarantee** that external (removable) eSIMs actually follow the standard.
+   Please **DO NOT** submit bug reports for non-functioning removable eSIMs.
+   They are **NOT** officially supported unless they also support / are supported by EasyEUICC, the unprivileged
+   variant.
+2. Both variants support accessing eUICC chips through USB CCID readers,
+   regardless of whether the chip contains the correct ARA-M hash to allow for unprivileged access.
+   However, only `T=0` readers that use the standard [USB CCID protocol][usb-ccid] are supported.
+3. Prebuilt release-mode EasyEUICC apks can be downloaded [here][releases].
+   For OpenEUICC, no official release is currently provided and only debug mode APKs and Magisk modules can be found in
+   the [CI page][actions].
+4. For removable eSIM chip vendors: to have your chip supported by official builds of EasyEUICC when inserted,
+   include the ARA-M hash `2A2FA878BC7C3354C2CF82935A5945A3EDAE4AFA`.
+
+[sgp.22]: https://www.gsma.com/solutions-and-impact/technologies/esim/gsma_resources/sgp-22-v2-2-2/ "SGP.22 v2.2.2"
+
+[usb-ccid]: https://en.wikipedia.org/wiki/CCID_%28protocol%29 "USB CCID Protocol"
+
+[releases]: https://gitea.angry.im/PeterCxy/OpenEUICC/releases "EasyEUICC Releases"
+
+[actions]: https://gitea.angry.im/PeterCxy/OpenEUICC/actions "OpenEUICC Actions"
+
+**This project is Free Software licensed under GNU GPL v3, WITHOUT the "or later" clause.**
+Any modification and derivative work **MUST** be released under the SAME license, which means, at the very least, that
+the source code **MUST** be available upon request.
+
+**If you are releasing a modification of this app, you are kindly asked to make changes to at least the app name and
+package name.**
+
+# Building (Gradle)
 
 Make sure you have all submodules cloned and updated by running
 
@@ -44,17 +83,86 @@ For EasyEUICC:
 ./gradlew :app-unpriv:assembleRelease
 ```
 
-FAQs
-===
+# Building (AOSP)
 
-- Q: Do you provide prebuilt binaries for OpenEUICC?
-- A: No. If you are a custom ROM developer, either include the entire OpenEUICC repository in your AOSP source tree, or generate an APK using `gradle` and import that as a prebuilt system app. Note that you might want `privapp_whitelist_im.angry.openeuicc.xml` as well.
+There are two ways to include OpenEUICC in your AOSP-based system image:
 
-- Q: AOSP's Settings app seems to be confused by OpenEUICC (for example, disabling / enabling profiles from the Networks page do not work properly)
-- A: When your device has internal eSIM chip(s) __and__ you have inserted a removable eSIM chip, the Settings app can misbehave since it was never designed for this scenario. __Please prefer using OpenEUICC's own management interface whenever possible.__ In the future, there might be an option to exclude removable SIMs from being reported to the Android system.
+1. Include this project and its [dependencies](https://gitea.angry.im/PeterCxy/android_prebuilts_openeuicc-deps) inside
+   the AOSP tree.
 
-- Q: Can EasyEUICC manage my phone's internal eSIM?
-- A: No. For EasyEUICC to work, the eSIM chip MUST proactively grant access via its ARA-M field.
+- If inclusion in `manifest.xml` is required, remember to set the `sync-s` option to clone submodules.
+- The module name is `OpenEUICC`. You can include it in `PRODUCT_PACKAGES`, or simply build it standalone using `mm`.
+- Compilation of this project is **only** tested against the latest AOSP release version. The app itself should be
+  compatible with older AOSP versions, but the source may not compile against an older AOSP source tree.
 
-- Q: Removable eSIMs? Are they a joke?
-- A: No, even though the name "removable embedded SIM" can sound like an oxymoron. In fact, there can be many advantages to these chips compared to fully embedded ones. For example, the ability to transfer eSIM profiles without carrier support or approval, or the ability to use eSIM on devices that do not and may never get the support, such as Wi-Fi hotspots.
+2. If compilation against AOSP source tree is not possible, consider [building with gradle](#building-gradle) and import
+   the apk as a prebuilt.
+
+- No official `Android.bp` is provided for this case but it should be straightforward to write.
+- You might want to include [`privapp_whitelist_im.angry.openeuicc.xml`] as well.
+
+[`privapp_whitelist_im.angry.openeuicc.xml`]: privapp_whitelist_im.angry.openeuicc.xml "OpenEUICC Privapp Whitelist"
+
+# Documentation
+
+- [Deep Link](docs/DEEP-LINK.md) - How to use the `lpa:` deep link to call {Open/Easy}EUICC from other apps.
+
+# FAQs
+
+- Q: Do you provide prebuilt binaries for OpenEUICC? \
+  A: Debug-mode APKs and Magisk modules are available continuously as an artifact of the [Actions] CI used by this
+  project. However, these debug-mode APKs are **not** intended for inclusion inside system images, nor are they
+  supported by the developer in any sense. If you are a custom ROM developer, either include the entire OpenEUICC
+  repository in your AOSP source tree, or generate an APK using `gradle` and import that as a prebuilt system app. Note
+  that you might want [`privapp_whitelist_im.angry.openeuicc.xml`] as well.
+
+- Q: Can EasyEUICC manage my phone's internal eSIM? \
+  A: No. For EasyEUICC to work, the eSIM chip MUST proactively grant access via its ARA-M field.
+
+- Q: Removable eSIMs? Are they a joke? \
+  A: No, even though the name "removable embedded SIM" can sound like an oxymoron. In fact, there can be many advantages
+  to these chips compared to fully embedded ones. For example, the ability to transfer eSIM profiles without carrier
+  support or approval, or the ability to use eSIM on devices that do not and may never get the support, such as Wi-Fi
+  hotspots.
+
+# Copyright
+
+Everything except `libs/lpac-jni` and `art/`:
+
+```
+Copyright 2022-2026 OpenEUICC contributors
+
+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, version 3.
+
+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, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+```
+
+`libs/lpac-jni`:
+
+```
+Copyright (C) 2022-2026 OpenEUICC contributiors
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation, version 2.1.
+
+This library 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
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+```
+
+`art/`: Courtesy of [Aikoyori](https://github.com/Aikoyori), CC NC-SA 4.0.

app-common/build.gradle

@@ -1,45 +0,0 @@
-plugins {
-    id 'com.android.library'
-    id 'org.jetbrains.kotlin.android'
-}
-
-android {
-    namespace 'im.angry.openeuicc.common'
-    compileSdk 34
-
-    defaultConfig {
-        minSdk 30
-
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-        consumerProguardFiles "consumer-rules.pro"
-    }
-
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-        }
-    }
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-    kotlinOptions {
-        jvmTarget = '1.8'
-    }
-}
-
-dependencies {
-    implementation project(":libs:lpac-jni")
-    implementation 'androidx.core:core-ktx:1.12.0'
-    implementation 'androidx.appcompat:appcompat:1.6.1'
-    implementation 'com.google.android.material:material:1.10.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
-    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.6.2'
-    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.1.0"
-    implementation "androidx.cardview:cardview:1.0.0"
-    implementation 'com.journeyapps:zxing-android-embedded:4.3.0'
-    testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
-}

app-common/build.gradle.kts

@@ -0,0 +1,46 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+plugins {
+    id("com.android.library")
+    id("org.jetbrains.kotlin.android")
+}
+
+android {
+    namespace = "im.angry.openeuicc.common"
+    compileSdk = 37
+
+    defaultConfig {
+        minSdk = 28
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    testOptions {
+        unitTests {
+            // Robolectric needs real resources (e.g. task titles) to test the real service
+            isIncludeAndroidResources = true
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+        }
+    }
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_11
+    }
+}
+
+dependencies {
+    api(project(":libs:lpac-jni"))
+    api(project(":app-deps"))
+    testImplementation("junit:junit:4.13.2")
+    testImplementation("org.robolectric:robolectric:4.17-beta-4")
+    androidTestImplementation("androidx.test.ext:junit:1.3.0")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.7.0")
+}

app-common/src/androidTest/java/im/angry/openeuicc/common/ExampleInstrumentedTest.kt

@@ -1,13 +1,11 @@
 package im.angry.openeuicc.common
 
-import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
-
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.assertEquals
 import org.junit.Test
 import org.junit.runner.RunWith
 
-import org.junit.Assert.*
-
 /**
  * Instrumented test, which will execute on an Android device.
  *
@@ -21,4 +19,4 @@ class ExampleInstrumentedTest {
         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
         assertEquals("im.angry.openeuicc.common.test", appContext.packageName)
     }
-}
+}

app-common/src/main/AndroidManifest.xml

@@ -1,16 +1,81 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:tools="http://schemas.android.com/tools"
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="im.angry.openeuicc.common">
 
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <application
-        android:networkSecurityConfig="@xml/network_security_config">
+        android:enableOnBackInvokedCallback="true"
+        tools:targetApi="tiramisu">
+        <activity
+            android:name="im.angry.openeuicc.ui.SettingsActivity"
+            android:label="@string/pref_settings" />
+
+        <activity
+            android:name="im.angry.openeuicc.ui.NotificationsActivity"
+            android:label="@string/profile_notifications" />
+
+        <activity
+            android:name="im.angry.openeuicc.ui.EuiccInfoActivity"
+            android:label="@string/euicc_info" />
+
+        <activity
+            android:name="im.angry.openeuicc.ui.LogsActivity"
+            android:label="@string/pref_advanced_logs" />
+
+        <activity
+            android:name="im.angry.openeuicc.ui.IsdrAidListActivity"
+            android:label="@string/isdr_aid_list" />
+
+        <activity
+            android:name="im.angry.openeuicc.ui.wizard.DownloadWizardActivity"
+            android:exported="true"
+            android:label="@string/download_wizard" />
+
+        <activity
+            android:name="im.angry.openeuicc.ui.wizard.DeepLinkConfirmationActivity"
+            android:clearTaskOnLaunch="true"
+            android:excludeFromRecents="true"
+            android:exported="true"
+            android:finishOnTaskLaunch="true"
+            android:label="@string/deep_link_confirmation"
+            android:launchMode="singleInstance"
+            android:theme="@style/Theme.App.DeepLinkTransparent">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <!-- Accepts URIs that begin with "lpa:" -->
+                <!-- for example: "LPA:1$..." -->
+                <!-- refs: https://www.iana.org/assignments/uri-schemes/prov/lpa -->
+                <data android:scheme="lpa" />
+                <data
+                    android:scheme="LPA"
+                    tools:ignore="AppLinkUrlError" />
+                <data android:sspPrefix="1$" />
+            </intent-filter>
+        </activity>
+
+        <activity-alias
+            android:name="im.angry.openeuicc.ui.DirectProfileDownloadActivity"
+            android:exported="true"
+            android:targetActivity="im.angry.openeuicc.ui.wizard.DownloadWizardActivity" />
+
         <activity
             android:name="com.journeyapps.barcodescanner.CaptureActivity"
             android:screenOrientation="fullSensor"
             tools:replace="screenOrientation" />
+
+        <service
+            android:name="im.angry.openeuicc.service.EuiccChannelManagerService"
+            android:exported="false"
+            android:foregroundServiceType="shortService" />
     </application>
 </manifest>

app-common/src/main/java/im/angry/openeuicc/OpenEuiccApplication.kt

@@ -1,20 +1,19 @@
 package im.angry.openeuicc
 
 import android.app.Application
-import android.telephony.SubscriptionManager
-import android.telephony.TelephonyManager
-import im.angry.openeuicc.core.EuiccChannelManager
+import com.google.android.material.color.DynamicColors
+import im.angry.openeuicc.di.AppContainer
+import im.angry.openeuicc.di.DefaultAppContainer
 
 open class OpenEuiccApplication : Application() {
-    val telephonyManager by lazy {
-        getSystemService(TelephonyManager::class.java)!!
+    open val appContainer: AppContainer by lazy {
+        DefaultAppContainer(this)
     }
 
-    open val euiccChannelManager: EuiccChannelManager by lazy {
-        EuiccChannelManager(this)
-    }
+    override fun onCreate() {
+        super.onCreate()
 
-    val subscriptionManager by lazy {
-        getSystemService(SubscriptionManager::class.java)!!
+        // Observe dynamic colors changes
+        DynamicColors.applyToActivitiesIfAvailable(this)
     }
 }

app-common/src/main/java/im/angry/openeuicc/core/ApduInterfaceAtrProvider.kt

@@ -0,0 +1,5 @@
+package im.angry.openeuicc.core
+
+interface ApduInterfaceAtrProvider {
+    val atr: ByteArray?
+}

app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelFactory.kt

@@ -0,0 +1,93 @@
+package im.angry.openeuicc.core
+
+import android.content.Context
+import android.se.omapi.SEService
+import android.util.Log
+import im.angry.openeuicc.common.R
+import im.angry.openeuicc.core.usb.UsbApduInterface
+import im.angry.openeuicc.core.usb.UsbCcidContext
+import im.angry.openeuicc.util.*
+
+open class DefaultEuiccChannelFactory(protected val context: Context) : EuiccChannelFactory {
+    private var seService: SEService? = null
+
+    private suspend fun ensureSEService() {
+        if (seService == null || !seService!!.isConnected) {
+            seService = connectSEService(context)
+        }
+    }
+
+    override suspend fun tryOpenEuiccChannel(
+        port: UiccPortInfoCompat,
+        isdrAid: ByteArray,
+        seId: EuiccChannel.SecureElementId,
+    ): EuiccChannel? = try {
+        if (port.portIndex != 0) {
+            Log.w(
+                DefaultEuiccChannelManager.TAG,
+                "OMAPI channel attempted on non-zero portId, this may or may not work."
+            )
+        }
+
+        ensureSEService()
+
+        Log.i(
+            DefaultEuiccChannelManager.TAG,
+            "Trying OMAPI for physical slot ${port.card.physicalSlotIndex}"
+        )
+        EuiccChannelImpl(
+            context.getString(R.string.channel_type_omapi),
+            port,
+            OmapiApduInterface(
+                seService!!,
+                port,
+                context.preferenceRepository.verboseLoggingFlow
+            ),
+            isdrAid,
+            seId,
+            context.preferenceRepository.verboseLoggingFlow,
+            context.preferenceRepository.ignoreTLSCertificateFlow,
+            context.preferenceRepository.httpProxyFlow,
+            context.preferenceRepository.es10xMssFlow,
+        )
+    } catch (_: IllegalArgumentException) {
+        // Failed
+        Log.w(
+            DefaultEuiccChannelManager.TAG,
+            "OMAPI APDU interface unavailable for physical slot ${port.card.physicalSlotIndex} with ISD-R AID: ${isdrAid.encodeHex()}."
+        )
+        null
+    }
+
+    override fun tryOpenUsbEuiccChannel(
+        ccidCtx: UsbCcidContext,
+        isdrAid: ByteArray,
+        seId: EuiccChannel.SecureElementId
+    ): EuiccChannel? = try {
+        EuiccChannelImpl(
+            context.getString(R.string.channel_type_usb),
+            FakeUiccPortInfoCompat(FakeUiccCardInfoCompat(EuiccChannelManager.USB_CHANNEL_ID)),
+            UsbApduInterface(
+                ccidCtx
+            ),
+            isdrAid,
+            seId,
+            context.preferenceRepository.verboseLoggingFlow,
+            context.preferenceRepository.ignoreTLSCertificateFlow,
+            context.preferenceRepository.httpProxyFlow,
+            context.preferenceRepository.es10xMssFlow,
+        )
+    } catch (_: IllegalArgumentException) {
+        // Failed
+        Log.w(
+            DefaultEuiccChannelManager.TAG,
+            "USB APDU interface unavailable for ISD-R AID: ${isdrAid.encodeHex()}."
+        )
+        null
+    }
+
+    override fun cleanup() {
+        seService?.shutdown()
+        seService = null
+    }
+}

app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelManager.kt

@@ -0,0 +1,420 @@
+package im.angry.openeuicc.core
+
+import android.content.Context
+import android.hardware.usb.UsbDevice
+import android.hardware.usb.UsbManager
+import android.telephony.SubscriptionManager
+import android.util.Log
+import im.angry.openeuicc.core.usb.UsbCcidContext
+import im.angry.openeuicc.core.usb.interfaces
+import im.angry.openeuicc.core.usb.smartCard
+import im.angry.openeuicc.di.AppContainer
+import im.angry.openeuicc.util.*
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.merge
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
+import kotlinx.coroutines.withTimeout
+
+open class DefaultEuiccChannelManager(
+    protected val appContainer: AppContainer,
+    protected val context: Context
+) : EuiccChannelManager {
+    companion object {
+        const val TAG = "EuiccChannelManager"
+    }
+
+    private val channelCache = mutableListOf<EuiccChannel>()
+
+    private var usbChannels = mutableListOf<EuiccChannel>()
+
+    private val lock = Mutex()
+
+    protected val tm by lazy {
+        appContainer.telephonyManager
+    }
+
+    private val usbManager by lazy {
+        context.getSystemService(Context.USB_SERVICE) as UsbManager
+    }
+
+    private val euiccChannelFactory by lazy {
+        appContainer.euiccChannelFactory
+    }
+
+    protected open val uiccCards: Collection<UiccCardInfoCompat>
+        get() = (0..<tm.activeModemCountCompat).map { FakeUiccCardInfoCompat(it) }
+
+    private suspend inline fun tryOpenChannelWithKnownAids(
+        openFn: (ByteArray, EuiccChannel.SecureElementId) -> EuiccChannel?
+    ): List<EuiccChannel> {
+        var isdrAidList =
+            parseIsdrAidList(appContainer.preferenceRepository.isdrAidListFlow.first())
+        val ret = mutableListOf<EuiccChannel>()
+        val openedAids = mutableListOf<ByteArray>()
+        var hasReset = false
+        var vendorDecider: VendorAidDecider? = null
+        var seId = 0
+
+        outer@ while (true) {
+            for (aid in isdrAidList) {
+                if (vendorDecider != null && !vendorDecider.shouldOpenMore(openedAids, aid)) {
+                    break@outer
+                }
+
+                val channel =
+                    openFn(aid, EuiccChannel.SecureElementId.createFromInt(seId))?.let { channel ->
+                        if (channel.valid) {
+                            seId += 1
+                            channel
+                        } else {
+                            channel.close()
+                            null
+                        }
+                    }
+
+                if (!hasReset) {
+                    val res = channel?.queryVendorAidListTransformation(isdrAidList)
+                    if (res != null) {
+                        // Reset the for loop since we needed to replace the AID list due to vendor-specific code
+                        Log.i(TAG, "AID list replaced, resetting open attempt")
+                        isdrAidList = res.first
+                        vendorDecider = res.second
+                        seId = 0
+                        ret.clear()
+                        openedAids.clear()
+                        channel.close()
+                        hasReset = true // Don't let anything reset again
+                        continue@outer
+                    }
+                }
+
+                if (channel != null) {
+                    ret.add(channel)
+                    openedAids.add(aid)
+
+                    // Don't try opening more than 1 channel unless there is a vendor
+                    // implementation for deciding when we should stop opening more channels
+                    if (vendorDecider == null) {
+                        break@outer
+                    }
+                }
+            }
+
+            // If we get here we should exit, since the inner loop completed without resetting
+            break
+        }
+
+        // Set the hasMultipleSE field now since we only get to know that after we have iterated all AIDs
+        // This also flips a flag in EuiccChannelImpl and prevents the field from being set again
+        ret.forEach { it.hasMultipleSE = (seId > 1) }
+
+        return ret
+    }
+
+    private suspend fun tryOpenEuiccChannel(
+        port: UiccPortInfoCompat,
+    ): List<EuiccChannel>? {
+        lock.withLock {
+            if (port.card.physicalSlotIndex == EuiccChannelManager.USB_CHANNEL_ID) {
+                return usbChannels
+            }
+
+            // First get all channels for the requested port
+            val existing =
+                channelCache.filter { it.slotId == port.card.physicalSlotIndex && it.portId == port.portIndex }
+            if (existing.isNotEmpty()) {
+                if (existing.all { it.valid && it.logicalSlotId == port.logicalSlotIndex }) {
+                    return existing
+                } else {
+                    // If any channel shouldn't be considered valid anymore, close all existing for the same slot / port
+                    // and reopen
+                    existing.forEach {
+                        it.close()
+                        channelCache.remove(it)
+                    }
+                }
+            }
+
+            if (port.logicalSlotIndex == SubscriptionManager.INVALID_SIM_SLOT_INDEX) {
+                // We can only open channels on ports that are actually enabled
+                return null
+            }
+
+            // This function is not responsible for managing USB channels (see the initial check)
+            val channels =
+                tryOpenChannelWithKnownAids { isdrAid, seId ->
+                    euiccChannelFactory.tryOpenEuiccChannel(
+                        port,
+                        isdrAid,
+                        seId
+                    )
+                }
+
+            if (channels.isNotEmpty()) {
+                channelCache.addAll(channels)
+                return channels
+            } else {
+                Log.i(
+                    TAG,
+                    "Was able to open channel for logical slot ${port.logicalSlotIndex}, but the channel is invalid (cannot get eID or profiles without errors). This slot might be broken, aborting."
+                )
+                return null
+            }
+        }
+    }
+
+    protected suspend fun findEuiccChannelByLogicalSlot(
+        logicalSlotId: Int,
+        seId: EuiccChannel.SecureElementId
+    ): EuiccChannel? =
+        withContext(Dispatchers.IO) {
+            if (logicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+                return@withContext usbChannels.find { it.seId == seId }
+            }
+
+            for (card in uiccCards) {
+                for (port in card.ports) {
+                    if (port.logicalSlotIndex == logicalSlotId) {
+                        return@withContext tryOpenEuiccChannel(port)?.find { it.seId == seId }
+                    }
+                }
+            }
+
+            null
+        }
+
+    /**
+     * Find all EuiccChannels associated with a _physical_ slot, including all secure elements
+     * on cards with multiple of them.
+     */
+    private suspend fun findAllEuiccChannelsByPhysicalSlot(physicalSlotId: Int): List<EuiccChannel>? {
+        if (physicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+            return usbChannels.ifEmpty { null }
+        }
+
+        for (card in uiccCards) {
+            if (card.physicalSlotIndex != physicalSlotId) continue
+            return card.ports.mapNotNull { tryOpenEuiccChannel(it) }
+                .flatten()
+                .ifEmpty { null }
+        }
+        return null
+    }
+
+    /**
+     * Finds all EuiccChannels associated with a physical slot + port. Note that this
+     * may return multiple in case there are multiple SEs.
+     */
+    private suspend fun findEuiccChannelsByPort(
+        physicalSlotId: Int,
+        portId: Int,
+    ): List<EuiccChannel>? =
+        withContext(Dispatchers.IO) {
+            if (physicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+                return@withContext usbChannels.ifEmpty { null }
+            }
+
+            uiccCards.find { it.physicalSlotIndex == physicalSlotId }?.let { card ->
+                card.ports.find { it.portIndex == portId }?.let { tryOpenEuiccChannel(it) }
+            }
+        }
+
+    override suspend fun findFirstAvailablePort(physicalSlotId: Int): Int =
+        withContext(Dispatchers.IO) {
+            if (physicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+                return@withContext 0
+            }
+
+            findAllEuiccChannelsByPhysicalSlot(physicalSlotId)?.getOrNull(0)?.portId ?: -1
+        }
+
+    override suspend fun findAvailablePorts(physicalSlotId: Int): List<Int> =
+        withContext(Dispatchers.IO) {
+            if (physicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+                return@withContext listOf(0)
+            }
+
+            findAllEuiccChannelsByPhysicalSlot(physicalSlotId)?.map { it.portId }?.toSet()?.toList()
+                ?: listOf()
+        }
+
+    override suspend fun <R> withEuiccChannel(
+        physicalSlotId: Int,
+        portId: Int,
+        seId: EuiccChannel.SecureElementId,
+        fn: suspend (EuiccChannel) -> R
+    ): R {
+        val channel = findEuiccChannelsByPort(physicalSlotId, portId)?.find { it.seId == seId }
+            ?: throw EuiccChannelManager.EuiccChannelNotFoundException()
+        val wrapper = EuiccChannelWrapper(channel)
+        try {
+            return withContext(Dispatchers.IO) {
+                fn(wrapper)
+            }
+        } finally {
+            wrapper.invalidateWrapper()
+        }
+    }
+
+    override suspend fun <R> withEuiccChannel(
+        logicalSlotId: Int,
+        seId: EuiccChannel.SecureElementId,
+        fn: suspend (EuiccChannel) -> R
+    ): R {
+        val channel = findEuiccChannelByLogicalSlot(logicalSlotId, seId)
+            ?: throw EuiccChannelManager.EuiccChannelNotFoundException()
+        val wrapper = EuiccChannelWrapper(channel)
+        try {
+            return withContext(Dispatchers.IO) {
+                fn(wrapper)
+            }
+        } finally {
+            wrapper.invalidateWrapper()
+        }
+    }
+
+    override suspend fun waitForReconnect(physicalSlotId: Int, portId: Int, timeoutMillis: Long) {
+        val numChannelsBefore = if (physicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+            usbChannels.size
+        } else {
+            // Don't use find* methods since they reopen channels if not found
+            channelCache.filter { it.slotId == physicalSlotId && it.portId == portId }.size
+        }
+
+        val resetChannels = {
+            if (physicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+                usbChannels.forEach { it.close() }
+                usbChannels.clear()
+            } else {
+                // If there is already a valid channel, we close it proactively
+                channelCache.filter { it.slotId == physicalSlotId && it.portId == portId }.forEach { it.close() }
+            }
+        }
+
+        resetChannels()
+
+        withTimeout(timeoutMillis) {
+            while (true) {
+                try {
+                    val channels = if (physicalSlotId == EuiccChannelManager.USB_CHANNEL_ID) {
+                        // tryOpenUsbEuiccChannel() will always try to reopen the channel, even if
+                        // a USB channel already exists
+                        tryOpenUsbEuiccChannel()
+                        usbChannels
+                    } else {
+                        // tryOpenEuiccChannel() will automatically dispose of invalid channels
+                        // and recreate when needed
+                        findEuiccChannelsByPort(physicalSlotId, portId)!!
+                    }
+                    check(channels.isNotEmpty()) { "No channel" }
+                    check(channels.all { it.valid }) { "Invalid channel" }
+                    check(numChannelsBefore > 0 && channels.size >= numChannelsBefore) { "Less channels than before" }
+                    break
+                } catch (e: Exception) {
+                    Log.d(
+                        TAG,
+                        "Slot $physicalSlotId port $portId reconnect failure, retrying in 1000 ms"
+                    )
+                    resetChannels()
+                }
+                delay(1000)
+            }
+        }
+    }
+
+    override fun flowInternalEuiccPorts(): Flow<Pair<Int, Int>> = flow {
+        uiccCards.forEach { info ->
+            info.ports.forEach { port ->
+                tryOpenEuiccChannel(port)?.also {
+                    Log.d(
+                        TAG,
+                        "Found eUICC on slot ${info.physicalSlotIndex} port ${port.portIndex}"
+                    )
+
+                    emit(Pair(info.physicalSlotIndex, port.portIndex))
+                }
+            }
+        }
+    }.flowOn(Dispatchers.IO)
+
+    override fun flowAllOpenEuiccPorts(): Flow<Pair<Int, Int>> =
+        merge(flowInternalEuiccPorts(), flow {
+            if (tryOpenUsbEuiccChannel().second) {
+                emit(Pair(EuiccChannelManager.USB_CHANNEL_ID, 0))
+            }
+        })
+
+    override fun flowEuiccSecureElements(
+        slotId: Int,
+        portId: Int
+    ): Flow<EuiccChannel.SecureElementId> = flow {
+        findEuiccChannelsByPort(slotId, portId)?.forEach {
+            emit(it.seId)
+        }
+    }
+
+    override suspend fun tryOpenUsbEuiccChannel(): Pair<UsbDevice?, Boolean> =
+        withContext(Dispatchers.IO) {
+            usbManager.deviceList.values.forEach { device ->
+                Log.i(
+                    TAG,
+                    "Scanning USB device ${device.vendorId.toUInt().toString(16)}:${
+                        device.productId.toUInt().toString(16)
+                    }"
+                )
+                val iface = device.interfaces.smartCard ?: return@forEach
+                // If we don't have permission, tell UI code that we found a candidate device, but we
+                // need permission to be able to do anything with it
+                if (!usbManager.hasPermission(device)) return@withContext Pair(device, false)
+                Log.i(
+                    TAG,
+                    "Found CCID interface on ${device.deviceId}:${device.vendorId}, and has permission; trying to open channel"
+                )
+
+                val ccidCtx =
+                    UsbCcidContext.createFromUsbDevice(context, device, iface) ?: return@forEach
+
+                try {
+                    val channels = tryOpenChannelWithKnownAids { isdrAid, seId ->
+                        euiccChannelFactory.tryOpenUsbEuiccChannel(ccidCtx, isdrAid, seId)
+                    }
+                    if (channels.isNotEmpty() && channels[0].valid) {
+                        ccidCtx.allowDisconnect = true
+                        usbChannels.clear()
+                        usbChannels.addAll(channels)
+                        return@withContext Pair(device, true)
+                    }
+                } catch (e: Exception) {
+                    // Ignored -- skip forward
+                    e.printStackTrace()
+                }
+
+                ccidCtx.allowDisconnect = true
+                ccidCtx.disconnect()
+
+                Log.i(
+                    TAG,
+                    "No valid eUICC channel found on USB device ${device.deviceId}:${device.vendorId}"
+                )
+            }
+            return@withContext Pair(null, false)
+        }
+
+    override fun invalidate() {
+        for (channel in channelCache) {
+            channel.close()
+        }
+
+        usbChannels.forEach { it.close() }
+        usbChannels.clear()
+        channelCache.clear()
+        euiccChannelFactory.cleanup()
+    }
+}

app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelManagerFactory.kt

@@ -0,0 +1,10 @@
+package im.angry.openeuicc.core
+
+import android.app.Service
+import im.angry.openeuicc.di.AppContainer
+
+class DefaultEuiccChannelManagerFactory(private val appContainer: AppContainer) :
+    EuiccChannelManagerFactory {
+    override fun createEuiccChannelManager(serviceContext: Service) =
+        DefaultEuiccChannelManager(appContainer, serviceContext)
+}

app-common/src/main/java/im/angry/openeuicc/core/EuiccChannel.kt

@@ -1,26 +1,99 @@
 package im.angry.openeuicc.core
 
+import android.os.Parcel
+import android.os.Parcelable
 import im.angry.openeuicc.util.*
+import net.typeblog.lpac_jni.ApduInterface
 import net.typeblog.lpac_jni.LocalProfileAssistant
 
-abstract class EuiccChannel(
-    val port: UiccPortInfoCompat
-) {
-    val slotId = port.card.physicalSlotIndex // PHYSICAL slot
-    val logicalSlotId = port.logicalSlotIndex
-    val portId = port.portIndex
+interface EuiccChannel {
+    val type: String
 
-    abstract val lpa: LocalProfileAssistant
-    val valid: Boolean
-        get() {
-            try {
-                // Try to ping the eUICC card by reading the EID
-                lpa.eID
-            } catch (e: Exception) {
-                return false
+    val port: UiccPortInfoCompat
+
+    val slotId: Int // PHYSICAL slot
+    val logicalSlotId: Int
+    val portId: Int
+
+    /**
+     * A semi-obscure wrapper over the integer ID of a secure element on a card.
+     *
+     * Because the ID is arbitrary, this is intended to discourage the use of the
+     * integer value directly. Additionally, it prevents accidentally calling the
+     * wrong function in EuiccChannelManager with a ton of integer parameters.
+     */
+    class SecureElementId private constructor(val id: Int) : Parcelable {
+        companion object {
+            val DEFAULT = SecureElementId(0)
+
+            /**
+             * Create a SecureElementId from an integer ID. You should not call this directly
+             * unless you know what you're doing.
+             *
+             * This is currently only ever used in the download flow.
+             */
+            fun createFromInt(id: Int): SecureElementId =
+                SecureElementId(id)
+
+            @Suppress("unused")
+            @JvmField
+            val CREATOR = object : Parcelable.Creator<SecureElementId> {
+                override fun createFromParcel(parcel: Parcel): SecureElementId =
+                    createFromInt(parcel.readInt())
+
+                override fun newArray(size: Int): Array<SecureElementId?> = arrayOfNulls(size)
             }
-            return true
         }
 
-    fun close() = lpa.close()
+        override fun hashCode(): Int =
+            id.hashCode()
+
+        override fun equals(other: Any?): Boolean =
+            if (other is SecureElementId) {
+                this.id == other.id
+            } else {
+                super.equals(other)
+            }
+
+        override fun describeContents(): Int = id
+
+        override fun writeToParcel(parcel: Parcel, flags: Int) {
+            parcel.writeInt(id)
+        }
+    }
+
+    /**
+     * Some chips support multiple SEs on one chip. The seId here is intended
+     * to distinguish channels opened from these different SEs.
+     */
+    val seId: SecureElementId
+
+    /**
+     * Does this channel belong to a chip that supports multiple SEs?
+     * Note that this is only made `var` to make initialization a bit less annoying --
+     * this should never be set again after the channel is originally opened.
+     * Attempting to do so will yield an exception.
+     */
+    var hasMultipleSE: Boolean
+
+    val lpa: LocalProfileAssistant
+
+    val valid: Boolean
+
+    /**
+     * Answer to Reset (ATR) value of the underlying interface, if any
+     */
+    val atr: ByteArray?
+
+    /**
+     * The underlying APDU interface for this channel
+     */
+    val apduInterface: ApduInterface
+
+    /**
+     * The AID of the ISD-R channel currently in use
+     */
+    val isdrAid: ByteArray
+
+    fun close()
 }

app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelFactory.kt

@@ -0,0 +1,27 @@
+package im.angry.openeuicc.core
+
+import im.angry.openeuicc.core.usb.UsbCcidContext
+import im.angry.openeuicc.util.*
+
+// This class is here instead of inside DI because it contains a bit more logic than just
+// "dumb" dependency injection.
+interface EuiccChannelFactory {
+    suspend fun tryOpenEuiccChannel(
+        port: UiccPortInfoCompat,
+        isdrAid: ByteArray,
+        seId: EuiccChannel.SecureElementId
+    ): EuiccChannel?
+
+    fun tryOpenUsbEuiccChannel(
+        ccidCtx: UsbCcidContext,
+        isdrAid: ByteArray,
+        seId: EuiccChannel.SecureElementId
+    ): EuiccChannel?
+
+    /**
+     * Release all resources used by this EuiccChannelFactory
+     * Note that the same instance may be reused; any resources allocated must be automatically
+     * re-acquired when this happens
+     */
+    fun cleanup()
+}

app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelImpl.kt

@@ -0,0 +1,54 @@
+package im.angry.openeuicc.core
+
+import im.angry.openeuicc.util.*
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+import net.typeblog.lpac_jni.ApduInterface
+import net.typeblog.lpac_jni.LocalProfileAssistant
+import net.typeblog.lpac_jni.impl.HttpInterfaceImpl
+import net.typeblog.lpac_jni.impl.LocalProfileAssistantImpl
+
+class EuiccChannelImpl(
+    override val type: String,
+    override val port: UiccPortInfoCompat,
+    override val apduInterface: ApduInterface,
+    override val isdrAid: ByteArray,
+    override val seId: EuiccChannel.SecureElementId,
+    verboseLoggingFlow: Flow<Boolean>,
+    ignoreTLSCertificateFlow: Flow<Boolean>,
+    httpProxyFlow: Flow<String>,
+    es10xMssFlow: Flow<Int>,
+) : EuiccChannel {
+    override val slotId = port.card.physicalSlotIndex
+    override val logicalSlotId = port.logicalSlotIndex
+    override val portId = port.portIndex
+
+    override val lpa: LocalProfileAssistant =
+        LocalProfileAssistantImpl(
+            isdrAid,
+            apduInterface,
+            HttpInterfaceImpl(verboseLoggingFlow, ignoreTLSCertificateFlow, httpProxyFlow),
+        ).also {
+            it.setEs10xMss(runBlocking { es10xMssFlow.first().toByte() })
+        }
+
+    override val atr: ByteArray?
+        get() = (apduInterface as? ApduInterfaceAtrProvider)?.atr
+
+    override val valid: Boolean
+        get() = lpa.valid
+
+    private var hasMultipleSEInitialized = false
+
+    override var hasMultipleSE: Boolean = false
+        set(value) {
+            if (hasMultipleSEInitialized) {
+                throw IllegalStateException("already initialized")
+            }
+
+            field = value
+        }
+
+    override fun close() = lpa.close()
+}

app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelManager.kt

@@ -1,184 +1,109 @@
 package im.angry.openeuicc.core
 
-import android.content.Context
-import android.os.Handler
-import android.os.HandlerThread
-import android.se.omapi.SEService
-import android.telephony.SubscriptionManager
-import android.util.Log
-import im.angry.openeuicc.OpenEuiccApplication
-import im.angry.openeuicc.util.*
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.runBlocking
-import kotlinx.coroutines.sync.Mutex
-import kotlinx.coroutines.sync.withLock
-import kotlinx.coroutines.withContext
-import java.lang.IllegalArgumentException
-import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
+import android.hardware.usb.UsbDevice
+import kotlinx.coroutines.flow.Flow
 
-open class EuiccChannelManager(protected val context: Context) {
+/**
+ * EuiccChannelManager holds references to, and manages the lifecycles of, individual
+ * APDU channels to SIM cards. The find* methods will create channels when needed, and
+ * all opened channels will be held in an internal cache until invalidate() is called
+ * or when this instance is destroyed.
+ *
+ * To precisely control the lifecycle of this object itself (and thus its cached channels),
+ * all other components must access EuiccChannelManager objects through EuiccChannelManagerService.
+ * Holding references independent of EuiccChannelManagerService is unsupported.
+ */
+interface EuiccChannelManager {
     companion object {
-        const val TAG = "EuiccChannelManager"
+        const val USB_CHANNEL_ID = 99
     }
 
-    private val channels = mutableListOf<EuiccChannel>()
+    /**
+     * Scan all possible _device internal_ sources for EuiccChannels, as a flow, return their physical
+     * (slotId, portId) and have all scanned channels cached; these channels will remain open
+     * for the entire lifetime of this EuiccChannelManager object, unless disconnected externally
+     * or invalidate()'d.
+     *
+     * To obtain a temporary reference to a EuiccChannel, use `withEuiccChannel()`.
+     */
+    fun flowInternalEuiccPorts(): Flow<Pair<Int, Int>>
 
-    private var seService: SEService? = null
+    /**
+     * Same as flowInternalEuiccPorts(), except that this includes non-device internal eUICC chips
+     * as well. Namely, this includes the USB reader.
+     *
+     * Non-internal readers will only be included if they have been opened properly, i.e. with permissions
+     * granted by the user.
+     */
+    fun flowAllOpenEuiccPorts(): Flow<Pair<Int, Int>>
 
-    private val lock = Mutex()
+    /**
+     * Iterate over all the Secure Elements available on one eUICC.
+     *
+     * This is going to almost always return only 1 result, except in the case where
+     * a card has multiple SEs.
+     */
+    fun flowEuiccSecureElements(slotId: Int, portId: Int): Flow<EuiccChannel.SecureElementId>
 
-    protected val tm by lazy {
-        (context.applicationContext as OpenEuiccApplication).telephonyManager
+    /**
+     * Scan all possible USB devices for CCID readers that may contain eUICC cards.
+     * If found, try to open it for access, and add it to the internal EuiccChannel cache
+     * as a "port" with id 99. When user interaction is required to obtain permission
+     * to interact with the device, the second return value will be false.
+     *
+     * Returns (usbDevice, canOpen). canOpen is false if either (1) no usb reader is found;
+     * or (2) usb reader is found, but user interaction is required for access;
+     * or (3) usb reader is found, but we are unable to open ISD-R.
+     */
+    suspend fun tryOpenUsbEuiccChannel(): Pair<UsbDevice?, Boolean>
+
+    /**
+     * Wait for a slot + port to reconnect (i.e. become valid again)
+     * If the port is currently valid, this function will return immediately.
+     * On timeout, the caller can decide to either try again later, or alert the user with an error
+     */
+    suspend fun waitForReconnect(physicalSlotId: Int, portId: Int, timeoutMillis: Long = 1000)
+
+    /**
+     * Returns the first mapped & available port ID for a physical slot, or -1 if
+     * not found.
+     */
+    suspend fun findFirstAvailablePort(physicalSlotId: Int): Int
+
+    /**
+     * Returns all mapped & available port IDs for a physical slot.
+     */
+    suspend fun findAvailablePorts(physicalSlotId: Int): List<Int>
+
+    class EuiccChannelNotFoundException : Exception("EuiccChannel not found")
+
+    /**
+     * Find a EuiccChannel by its slot and port, then run a callback with a reference to it.
+     * The reference is not supposed to be held outside of the callback. This is enforced via
+     * a wrapper object.
+     *
+     * The callback is run on Dispatchers.IO by default.
+     *
+     * If a channel for that slot / port is not found, EuiccChannelNotFoundException is thrown
+     */
+    suspend fun <R> withEuiccChannel(physicalSlotId: Int, portId: Int, seId: EuiccChannel.SecureElementId, fn: suspend (EuiccChannel) -> R): R
+
+    /**
+     * Same as withEuiccChannel(Int, Int, SecureElementId, (EuiccChannel) -> R) but instead uses logical slot ID
+     */
+    suspend fun <R> withEuiccChannel(logicalSlotId: Int, seId: EuiccChannel.SecureElementId, fn: suspend (EuiccChannel) -> R): R
+
+    /**
+     * Invalidate all EuiccChannels previously cached by this Manager
+     */
+    fun invalidate()
+
+    /**
+     * If possible, trigger the system to update the cached list of profiles
+     * This is only expected to be implemented when the application is privileged
+     * TODO: Remove this from the common interface
+     */
+    suspend fun notifyEuiccProfilesChanged(logicalSlotId: Int) {
+        // no-op by default
     }
-
-    private val handler = Handler(HandlerThread("BaseEuiccChannelManager").also { it.start() }.looper)
-
-    protected open val uiccCards: Collection<UiccCardInfoCompat>
-        get() = (0..<tm.activeModemCount).map { FakeUiccCardInfoCompat(it) }
-
-    private suspend fun connectSEService(): SEService = suspendCoroutine { cont ->
-        handler.post {
-            var service: SEService? = null
-            service = SEService(context, { handler.post(it) }) {
-                cont.resume(service!!)
-            }
-        }
-    }
-
-    private suspend fun ensureSEService() {
-         if (seService == null) {
-             seService = connectSEService()
-         }
-    }
-
-    protected open fun tryOpenEuiccChannelPrivileged(port: UiccPortInfoCompat): EuiccChannel? {
-        // No-op when unprivileged
-        return null
-    }
-
-    protected fun tryOpenEuiccChannelUnprivileged(port: UiccPortInfoCompat): EuiccChannel? {
-        if (port.portIndex != 0) {
-            Log.w(TAG, "OMAPI channel attempted on non-zero portId, ignoring")
-            return null
-        }
-
-        Log.i(TAG, "Trying OMAPI for physical slot ${port.card.physicalSlotIndex}")
-        try {
-            return OmapiChannel(seService!!, port)
-        } catch (e: IllegalArgumentException) {
-            // Failed
-            Log.w(TAG, "OMAPI APDU interface unavailable for physical slot ${port.card.physicalSlotIndex}.")
-        }
-
-        return null
-    }
-
-    private suspend fun tryOpenEuiccChannel(port: UiccPortInfoCompat): EuiccChannel? {
-        lock.withLock {
-            ensureSEService()
-            val existing = channels.find { it.slotId == port.card.physicalSlotIndex && it.portId == port.portIndex }
-            if (existing != null) {
-                if (existing.valid && port.logicalSlotIndex == existing.logicalSlotId) {
-                    return existing
-                } else {
-                    existing.close()
-                    channels.remove(existing)
-                }
-            }
-
-            if (port.logicalSlotIndex == SubscriptionManager.INVALID_SIM_SLOT_INDEX) {
-                // We can only open channels on ports that are actually enabled
-                return null
-            }
-
-            var euiccChannel: EuiccChannel? = tryOpenEuiccChannelPrivileged(port)
-
-            if (euiccChannel == null) {
-                euiccChannel = tryOpenEuiccChannelUnprivileged(port)
-            }
-
-            if (euiccChannel != null) {
-                channels.add(euiccChannel)
-            }
-
-            return euiccChannel
-        }
-    }
-
-    fun findEuiccChannelBySlotBlocking(logicalSlotId: Int): EuiccChannel? =
-        runBlocking {
-            withContext(Dispatchers.IO) {
-                for (card in uiccCards) {
-                    for (port in card.ports) {
-                        if (port.logicalSlotIndex == logicalSlotId) {
-                            return@withContext tryOpenEuiccChannel(port)
-                        }
-                    }
-                }
-
-                null
-            }
-        }
-
-    fun findEuiccChannelByPhysicalSlotBlocking(physicalSlotId: Int): EuiccChannel? = runBlocking {
-        withContext(Dispatchers.IO) {
-            for (card in uiccCards) {
-                if (card.physicalSlotIndex != physicalSlotId) continue
-                for (port in card.ports) {
-                    tryOpenEuiccChannel(port)?.let { return@withContext it }
-                }
-            }
-
-            null
-        }
-    }
-
-    fun findAllEuiccChannelsByPhysicalSlotBlocking(physicalSlotId: Int): List<EuiccChannel>? = runBlocking {
-        for (card in uiccCards) {
-            if (card.physicalSlotIndex != physicalSlotId) continue
-            return@runBlocking card.ports.mapNotNull { tryOpenEuiccChannel(it) }
-                .ifEmpty { null }
-        }
-        return@runBlocking null
-    }
-
-    fun findEuiccChannelByPortBlocking(physicalSlotId: Int, portId: Int): EuiccChannel? = runBlocking {
-        withContext(Dispatchers.IO) {
-            uiccCards.find { it.physicalSlotIndex == physicalSlotId }?.let { card ->
-                card.ports.find { it.portIndex == portId }?.let { tryOpenEuiccChannel(it) }
-            }
-        }
-    }
-
-    suspend fun enumerateEuiccChannels() {
-        withContext(Dispatchers.IO) {
-            ensureSEService()
-
-            for (uiccInfo in uiccCards) {
-                for (port in uiccInfo.ports) {
-                    if (tryOpenEuiccChannel(port) != null) {
-                        Log.d(TAG, "Found eUICC on slot ${uiccInfo.physicalSlotIndex} port ${port.portIndex}")
-                    }
-                }
-            }
-        }
-    }
-
-    val knownChannels: List<EuiccChannel>
-        get() = channels.toList()
-
-    fun invalidate() {
-        for (channel in channels) {
-            channel.close()
-        }
-
-        channels.clear()
-        seService?.shutdown()
-        seService = null
-    }
-
-    open fun notifyEuiccProfilesChanged(logicalSlotId: Int) {
-        // No-op for unprivileged
-    }
-}
+}

app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelManagerFactory.kt

@@ -0,0 +1,7 @@
+package im.angry.openeuicc.core
+
+import android.app.Service
+
+interface EuiccChannelManagerFactory {
+    fun createEuiccChannelManager(serviceContext: Service): EuiccChannelManager
+}

app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelWrapper.kt

@@ -0,0 +1,58 @@
+package im.angry.openeuicc.core
+
+import im.angry.openeuicc.util.*
+import net.typeblog.lpac_jni.ApduInterface
+import net.typeblog.lpac_jni.LocalProfileAssistant
+
+class EuiccChannelWrapper(orig: EuiccChannel) : EuiccChannel {
+    private var _inner: EuiccChannel? = orig
+
+    private val channel: EuiccChannel
+        get() {
+            if (_inner == null) {
+                throw IllegalStateException("This wrapper has been invalidated")
+            }
+
+            return _inner!!
+        }
+
+    override val type: String
+        get() = channel.type
+    override val port: UiccPortInfoCompat
+        get() = channel.port
+    override val slotId: Int
+        get() = channel.slotId
+    override val logicalSlotId: Int
+        get() = channel.logicalSlotId
+    override val portId: Int
+        get() = channel.portId
+    override val seId: EuiccChannel.SecureElementId
+        get() = channel.seId
+    private val lpaDelegate = lazy {
+        LocalProfileAssistantWrapper(channel.lpa)
+    }
+    override val lpa: LocalProfileAssistant by lpaDelegate
+    override val valid: Boolean
+        get() = channel.valid
+    override val apduInterface: ApduInterface
+        get() = channel.apduInterface
+    override val atr: ByteArray?
+        get() = channel.atr
+    override val isdrAid: ByteArray
+        get() = channel.isdrAid
+    override var hasMultipleSE: Boolean
+        get() = channel.hasMultipleSE
+        set(value) {
+            channel.hasMultipleSE = value
+        }
+
+    override fun close() = channel.close()
+
+    fun invalidateWrapper() {
+        _inner = null
+
+        if (lpaDelegate.isInitialized()) {
+            (lpa as LocalProfileAssistantWrapper).invalidateWrapper()
+        }
+    }
+}

app-common/src/main/java/im/angry/openeuicc/core/LocalProfileAssistantWrapper.kt

@@ -0,0 +1,62 @@
+package im.angry.openeuicc.core
+
+import net.typeblog.lpac_jni.ProfileDownloadInput
+import net.typeblog.lpac_jni.EuiccInfo2
+import net.typeblog.lpac_jni.LocalProfileAssistant
+import net.typeblog.lpac_jni.LocalProfileInfo
+import net.typeblog.lpac_jni.LocalProfileNotification
+import net.typeblog.lpac_jni.ProfileDownloadCallback
+
+class LocalProfileAssistantWrapper(orig: LocalProfileAssistant) :
+    LocalProfileAssistant {
+    private var _inner: LocalProfileAssistant? = orig
+
+    private val lpa: LocalProfileAssistant
+        get() {
+            if (_inner == null) {
+                throw IllegalStateException("This wrapper has been invalidated")
+            }
+
+            return _inner!!
+        }
+
+    override val valid: Boolean
+        get() = lpa.valid
+    override val profiles: List<LocalProfileInfo>
+        get() = lpa.profiles
+    override val notifications: List<LocalProfileNotification>
+        get() = lpa.notifications
+    override val eID: String
+        get() = lpa.eID
+    override val euiccInfo2: EuiccInfo2?
+        get() = lpa.euiccInfo2
+
+    override fun setEs10xMss(mss: Byte) = lpa.setEs10xMss(mss)
+
+    override fun enableProfile(iccid: String, refresh: Boolean): Boolean =
+        lpa.enableProfile(iccid, refresh)
+
+    override fun disableProfile(iccid: String, refresh: Boolean): Boolean =
+        lpa.disableProfile(iccid, refresh)
+
+    override fun deleteProfile(iccid: String): Boolean = lpa.deleteProfile(iccid)
+
+    override fun downloadProfile(input: ProfileDownloadInput, callback: ProfileDownloadCallback) =
+        lpa.downloadProfile(input, callback)
+
+    override fun deleteNotification(seqNumber: Long): Boolean = lpa.deleteNotification(seqNumber)
+
+    override fun handleNotification(seqNumber: Long): Boolean = lpa.handleNotification(seqNumber)
+
+    override fun euiccMemoryReset() = lpa.euiccMemoryReset()
+
+    override fun setNickname(iccid: String, nickname: String) {
+        lpa.setNickname(iccid, nickname)
+    }
+
+    override fun close() = lpa.close()
+
+    fun invalidateWrapper() {
+        _inner = null
+    }
+}

app-common/src/main/java/im/angry/openeuicc/core/OmapiApduInterface.kt

@@ -3,21 +3,35 @@ package im.angry.openeuicc.core
 import android.se.omapi.Channel
 import android.se.omapi.SEService
 import android.se.omapi.Session
-import im.angry.openeuicc.util.UiccPortInfoCompat
+import android.util.Log
+import im.angry.openeuicc.util.*
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
 import net.typeblog.lpac_jni.ApduInterface
-import net.typeblog.lpac_jni.LocalProfileAssistant
-import net.typeblog.lpac_jni.impl.HttpInterfaceImpl
-import net.typeblog.lpac_jni.impl.LocalProfileAssistantImpl
+import java.util.concurrent.atomic.AtomicInteger
 
 class OmapiApduInterface(
     private val service: SEService,
-    private val port: UiccPortInfoCompat
-): ApduInterface {
+    private val port: UiccPortInfoCompat,
+    private val verboseLoggingFlow: Flow<Boolean>
+) : ApduInterface, ApduInterfaceAtrProvider {
+    companion object {
+        const val TAG = "OmapiApduInterface"
+    }
+
     private lateinit var session: Session
-    private lateinit var lastChannel: Channel
+    private val index = AtomicInteger(0)
+    private val channels = mutableMapOf<Int, Channel>()
+
+    override val valid: Boolean
+        get() = service.isConnected && (this::session.isInitialized && !session.isClosed)
+
+    override val atr: ByteArray?
+        get() = session.atr
 
     override fun connect() {
-        session = service.getUiccReader(port.logicalSlotIndex + 1).openSession()
+        session = service.getUiccReaderCompat(port.logicalSlotIndex + 1).openSession()
     }
 
     override fun disconnect() {
@@ -25,35 +39,56 @@ class OmapiApduInterface(
     }
 
     override fun logicalChannelOpen(aid: ByteArray): Int {
-        check(!this::lastChannel.isInitialized) {
-            "Can only open one channel"
-        }
-        lastChannel = session.openLogicalChannel(aid)!!;
-        return 1;
+        val channel = session.openLogicalChannel(aid)
+        check(channel != null) { "Failed to open logical channel (${aid.encodeHex()})" }
+        val handle = index.incrementAndGet()
+        synchronized(channels) { channels[handle] = channel }
+        return handle
     }
 
     override fun logicalChannelClose(handle: Int) {
-        check(handle == 1 && !this::lastChannel.isInitialized) {
-            "Unknown channel"
+        val channel = channels[handle]
+        check(channel != null) { "Invalid logical channel handle $handle" }
+
+        try {
+            if (channel.isOpen) channel.close()
+        } catch (e: IllegalArgumentException) {
+            Log.w(TAG, "Logical channel was already closed by the modem", e)
+        } finally {
+            synchronized(channels) {
+                channels.remove(handle)
+            }
         }
-        lastChannel.close()
     }
 
-    override fun transmit(tx: ByteArray): ByteArray {
-        check(this::lastChannel.isInitialized) {
-            "Unknown channel"
+    override fun transmit(handle: Int, tx: ByteArray): ByteArray {
+        val channel = channels[handle]
+        check(channel != null) { "Invalid logical channel handle $handle" }
+
+        if (runBlocking { verboseLoggingFlow.first() }) {
+            Log.d(TAG, "OMAPI APDU: ${tx.encodeHex()}")
         }
 
-        return lastChannel.transmit(tx)
+        try {
+            for (i in 0..10) {
+                val res = channel.transmit(tx)
+                if (runBlocking { verboseLoggingFlow.first() }) {
+                    Log.d(TAG, "OMAPI APDU response: ${res.encodeHex()}")
+                }
+
+                if (res.size == 2 && res[0] == 0x66.toByte() && res[1] == 0x01.toByte()) {
+                    Log.d(TAG, "Received checksum error 0x6601, retrying (count = $i)")
+                    continue
+                }
+
+                return res
+            }
+
+            throw RuntimeException("Retransmit attempts exhausted; this was likely caused by checksum errors")
+        } catch (e: Exception) {
+            Log.e(TAG, "OMAPI APDU exception")
+            e.printStackTrace()
+            throw e
+        }
     }
-
-}
-
-class OmapiChannel(
-    service: SEService,
-    port: UiccPortInfoCompat,
-) : EuiccChannel(port) {
-    override val lpa: LocalProfileAssistant = LocalProfileAssistantImpl(
-        OmapiApduInterface(service, port),
-        HttpInterfaceImpl())
 }

app-common/src/main/java/im/angry/openeuicc/core/usb/UsbApduInterface.kt

@@ -0,0 +1,232 @@
+package im.angry.openeuicc.core.usb
+
+import android.util.Log
+import im.angry.openeuicc.core.ApduInterfaceAtrProvider
+import im.angry.openeuicc.util.decodeHex
+import im.angry.openeuicc.util.encodeHex
+import net.typeblog.lpac_jni.ApduInterface
+
+class UsbApduInterface(
+    private val ccidCtx: UsbCcidContext
+) : ApduInterface, ApduInterfaceAtrProvider {
+    companion object {
+        private const val TAG = "UsbApduInterface"
+    }
+
+    override val atr: ByteArray?
+        get() = ccidCtx.atr
+
+    override val valid: Boolean
+        get() = channels.isNotEmpty()
+
+    private var channels = mutableSetOf<Int>()
+
+    // ATR parser
+    // Specs: ISO/IEC 7816-3:2006 8.2 Answer-to-Reset
+    // See also: https://en.wikipedia.org/wiki/Answer_to_reset
+    class ParsedAtr private constructor(
+        val ts: Byte?,
+        val t0: Byte?,
+        val ta1: Byte?,
+        val tb1: Byte?,
+        val tc1: Byte?,
+        val td1: Byte?,
+        val ta2: Byte?,
+        val tb2: Byte?,
+        val tc2: Byte?,
+        val td2: Byte?
+    ) {
+        companion object {
+            fun parse(atr: ByteArray): ParsedAtr {
+                val ts = atr[0]
+                val t0 = atr[1]
+                val tx1 = arrayOf<Byte?>(null, null, null, null)
+                val tx2 = arrayOf<Byte?>(null, null, null, null)
+                var pointer = 2
+
+                for (i in 0..3) {
+                    if (t0.toInt() and (0x10 shl i) != 0) {
+                        tx1[i] = atr[pointer]
+                        pointer++
+                    }
+                }
+
+                val td1 = tx1[3] ?: 0
+
+                for (i in 0..3) {
+                    if (td1.toInt() and (0x10 shl i) != 0) {
+                        tx2[i] = atr[pointer]
+                        pointer++
+                    }
+                }
+
+                return ParsedAtr(
+                    ts = ts, t0 = t0, ta1 = tx1[0], tb1 = tx1[1], tc1 = tx1[2], td1 = tx1[3],
+                    ta2 = tx2[0], tb2 = tx2[1], tc2 = tx2[2], td2 = tx2[3],
+                )
+            }
+        }
+    }
+
+    override fun connect() {
+        ccidCtx.connect()
+
+        if (ccidCtx.useTpdu) {
+            // Send parameter selection
+            // Specs: USB-CCID 3.2.1 TPDU level of exchange
+            val parsedAtr = ParsedAtr.parse(atr!!)
+            val ta1 = parsedAtr.ta1 ?: 0x11.toByte()
+            val pts1 = ta1 // TODO: Check that reader supports baud rate proposed by the card
+            val pps = byteArrayOf(0xff.toByte(), 0x10.toByte(), pts1, 0x00.toByte())
+            Log.d(TAG, "PTS1=${pts1} PPS: ${pps.encodeHex()}")
+            ccidCtx.transceiver.sendXfrBlock(pps)
+
+            // Send Set Parameters
+            // Specs: USB-CCID 6.1.7 PC_to_RDR_SetParameters
+
+            val param = byteArrayOf(
+                pts1,
+                (if (parsedAtr.ts == 0x3F.toByte()) 0x02 else 0x00),
+                parsedAtr.tc1 ?: 0,
+                parsedAtr.tc2 ?: 0x0A,
+                0x00
+            )
+
+            Log.d(TAG, "Param: ${param.encodeHex()}")
+
+            ccidCtx.transceiver.sendParamBlock(param)
+        }
+
+        // Send Terminal Capabilities
+        // Specs: ETSI TS 102 221 v15.0.0 - 11.1.19 TERMINAL CAPABILITY
+        val terminalCapabilities = buildCmd(
+            0x80.toByte(), 0xaa.toByte(), 0x00, 0x00,
+            "A9088100820101830107".decodeHex(),
+            le = null,
+        )
+        transmitApduByChannel(terminalCapabilities, 0)
+    }
+
+    override fun disconnect() = ccidCtx.disconnect()
+
+    override fun logicalChannelOpen(aid: ByteArray): Int {
+        // OPEN LOGICAL CHANNEL
+        val req = manageChannelCmd(true, 0)
+
+        val resp = try {
+            transmitApduByChannel(req, 0)
+        } catch (e: Exception) {
+            e.printStackTrace()
+            return -1
+        }
+
+        if (!isSuccessResponse(resp)) {
+            Log.d(TAG, "OPEN LOGICAL CHANNEL failed: ${resp.encodeHex()}")
+            return -1
+        }
+
+        val channelId = resp[0].toInt()
+        Log.d(TAG, "channelId = $channelId")
+        channels.add(channelId)
+
+        // Then, select AID
+        val selectAid = selectByDfCmd(aid, channelId.toByte())
+        val selectAidResp = transmitApduByChannel(selectAid, channelId.toByte())
+
+        if (!isSuccessResponse(selectAidResp)) {
+            Log.d(TAG, "Select DF failed : ${selectAidResp.encodeHex()}")
+            logicalChannelClose(channelId)
+            Log.d(TAG, "Closed logical channel $channelId due to select DF failure")
+            return -1
+        }
+
+        return channelId
+    }
+
+    override fun logicalChannelClose(handle: Int) {
+        check(channels.contains(handle)) {
+            "Invalid logical channel handle $handle"
+        }
+        // CLOSE LOGICAL CHANNEL
+        val req = manageChannelCmd(false, handle.toByte())
+        val resp = transmitApduByChannel(req, handle.toByte())
+
+        if (!isSuccessResponse(resp)) {
+            Log.d(TAG, "CLOSE LOGICAL CHANNEL failed: ${resp.encodeHex()}")
+        }
+        channels.remove(handle)
+    }
+
+    override fun transmit(handle: Int, tx: ByteArray): ByteArray {
+        check(channels.contains(handle)) {
+            "Invalid logical channel handle $handle"
+        }
+        return transmitApduByChannel(tx, handle.toByte())
+    }
+
+    private fun isSuccessResponse(resp: ByteArray): Boolean =
+        resp.size >= 2 && resp[resp.size - 2] == 0x90.toByte() && resp[resp.size - 1] == 0x00.toByte()
+
+    private fun buildCmd(cla: Byte, ins: Byte, p1: Byte, p2: Byte, data: ByteArray?, le: Byte?) =
+        byteArrayOf(cla, ins, p1, p2).let {
+            if (data != null) {
+                it + data.size.toByte() + data
+            } else {
+                it
+            }
+        }.let {
+            if (le != null) {
+                it + byteArrayOf(le)
+            } else {
+                it
+            }
+        }
+
+    private fun manageChannelCmd(open: Boolean, channel: Byte) =
+        if (open) {
+            buildCmd(0x00, 0x70, 0x00, 0x00, null, 0x01)
+        } else {
+            buildCmd(channel, 0x70, 0x80.toByte(), channel, null, null)
+        }
+
+    private fun selectByDfCmd(aid: ByteArray, channel: Byte) =
+        buildCmd(channel, 0xA4.toByte(), 0x04, 0x00, aid, null)
+
+    private fun transmitApduByChannel(tx: ByteArray, channel: Byte): ByteArray {
+        val realTx = tx.copyOf()
+        // OR the channel mask into the CLA byte
+        realTx[0] = ((realTx[0].toInt() and 0xFC) or channel.toInt()).toByte()
+
+        var resp = ccidCtx.transceiver.sendXfrBlock(realTx).data!!
+
+        if (resp.size < 2) throw RuntimeException("APDU response smaller than 2 (sw1 + sw2)!")
+
+        var sw1 = resp[resp.size - 2].toInt() and 0xFF
+        var sw2 = resp[resp.size - 1].toInt() and 0xFF
+
+        if (sw1 == 0x6C) {
+            // 0x6C = wrong le
+            // so we fix the le field here
+            realTx[realTx.size - 1] = resp[resp.size - 1]
+            resp = ccidCtx.transceiver.sendXfrBlock(realTx).data!!
+        } else if (sw1 == 0x61) {
+            // 0x61 = X bytes available
+            // continue reading by GET RESPONSE
+            do {
+                // GET RESPONSE
+                val getResponseCmd = byteArrayOf(
+                    realTx[0], 0xC0.toByte(), 0x00, 0x00, sw2.toByte()
+                )
+
+                val tmp = ccidCtx.transceiver.sendXfrBlock(getResponseCmd).data!!
+
+                resp = resp.sliceArray(0 until (resp.size - 2)) + tmp
+
+                sw1 = resp[resp.size - 2].toInt() and 0xFF
+                sw2 = resp[resp.size - 1].toInt() and 0xFF
+            } while (sw1 == 0x61)
+        }
+
+        return resp
+    }
+}

app-common/src/main/java/im/angry/openeuicc/core/usb/UsbCcidContext.kt

@@ -0,0 +1,93 @@
+package im.angry.openeuicc.core.usb
+
+import android.content.Context
+import android.hardware.usb.UsbDevice
+import android.hardware.usb.UsbDeviceConnection
+import android.hardware.usb.UsbEndpoint
+import android.hardware.usb.UsbInterface
+import android.hardware.usb.UsbManager
+import im.angry.openeuicc.util.preferenceRepository
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+
+/**
+ * A wrapper over an usb device + interface, manages the lifecycle independent
+ * of the APDU interface exposed to lpac-jni.
+ *
+ * This allows us to try multiple AIDs on each interface without opening / closing
+ * the USB connection numerous times.
+ */
+class UsbCcidContext private constructor(
+    private val conn: UsbDeviceConnection,
+    private val bulkIn: UsbEndpoint,
+    private val bulkOut: UsbEndpoint,
+    val verboseLoggingFlow: Flow<Boolean>,
+    val useTpdu: Boolean
+) {
+    companion object {
+        fun createFromUsbDevice(
+            context: Context,
+            usbDevice: UsbDevice,
+            usbInterface: UsbInterface
+        ): UsbCcidContext? = runCatching {
+            val (bulkIn, bulkOut) = usbInterface.endpoints.bulkPair
+            if (bulkIn == null || bulkOut == null) return@runCatching null
+            val conn = context.getSystemService(UsbManager::class.java).openDevice(usbDevice)
+                ?: return@runCatching null
+            if (!conn.claimInterface(usbInterface, true)) return@runCatching null
+
+            val forceTpduMode = runBlocking { context.preferenceRepository.forceTpduModeFlow.first() }
+            val useTpdu = forceTpduMode || isKnownTpduReader(usbDevice.vendorId, usbDevice.productId)
+
+            UsbCcidContext(
+                conn,
+                bulkIn,
+                bulkOut,
+                context.preferenceRepository.verboseLoggingFlow,
+                useTpdu
+            )
+        }.getOrNull()
+    }
+
+    /**
+     * When set to false (the default), the disconnect() method does nothing.
+     * This allows the separation of device disconnection from lpac-jni's APDU interface.
+     */
+    var allowDisconnect = false
+    private var initialized = false
+    lateinit var transceiver: UsbCcidTransceiver
+    var atr: ByteArray? = null
+
+    fun connect() {
+        if (initialized) {
+            return
+        }
+
+        val ccidDescription = UsbCcidDescription.fromRawDescriptors(conn.rawDescriptors)!!
+
+        if (!ccidDescription.hasT0Protocol) {
+            throw IllegalArgumentException("Unsupported card reader; T=0 support is required")
+        }
+
+        transceiver = UsbCcidTransceiver(conn, bulkIn, bulkOut, ccidDescription, verboseLoggingFlow)
+
+        try {
+            // 6.1.1.1 PC_to_RDR_IccPowerOn (Page 20 of 40)
+            // https://www.usb.org/sites/default/files/DWG_Smart-Card_USB-ICC_ICCD_rev10.pdf
+            atr = transceiver.iccPowerOn().data
+        } catch (e: Exception) {
+            e.printStackTrace()
+            throw e
+        }
+
+        initialized = true
+    }
+
+    fun disconnect() {
+        if (initialized && allowDisconnect) {
+            conn.close()
+            atr = null
+        }
+    }
+}

app-common/src/main/java/im/angry/openeuicc/core/usb/UsbCcidDescription.kt

@@ -0,0 +1,98 @@
+package im.angry.openeuicc.core.usb
+
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+
+@Suppress("unused")
+data class UsbCcidDescription(
+    private val bMaxSlotIndex: Byte,
+    private val bVoltageSupport: Byte,
+    private val dwProtocols: Int,
+    private val dwFeatures: Int
+) {
+    companion object {
+        private const val DESCRIPTOR_LENGTH: Byte = 0x36
+        private const val DESCRIPTOR_TYPE: Byte = 0x21
+
+        // dwFeatures Masks
+        private const val FEATURE_AUTOMATIC_VOLTAGE = 0x00008
+        private const val FEATURE_AUTOMATIC_PPS = 0x00080
+
+        private const val FEATURE_EXCHANGE_LEVEL_TPDU = 0x10000
+        private const val FEATURE_EXCHANGE_LEVEL_SHORT_APDU = 0x20000
+        private const val FEATURE_EXCHANGE_LEVEL_EXTENDED_APDU = 0x40000
+
+        // bVoltageSupport Masks
+        private const val VOLTAGE_5V0: Byte = 1
+        private const val VOLTAGE_3V0: Byte = 2
+        private const val VOLTAGE_1V8: Byte = 4
+
+        private const val SLOT_OFFSET = 4
+        private const val FEATURES_OFFSET = 40
+        private const val MASK_T0_PROTO = 1
+        private const val MASK_T1_PROTO = 2
+
+        fun fromRawDescriptors(desc: ByteArray): UsbCcidDescription? {
+            var dwProtocols = 0
+            var dwFeatures = 0
+            var bMaxSlotIndex: Byte = 0
+            var bVoltageSupport: Byte = 0
+
+            var hasCcidDescriptor = false
+
+            val byteBuffer = ByteBuffer.wrap(desc).order(ByteOrder.LITTLE_ENDIAN)
+
+            while (byteBuffer.hasRemaining()) {
+                byteBuffer.mark()
+                val len = byteBuffer.get()
+                val type = byteBuffer.get()
+                if (type == DESCRIPTOR_TYPE && len == DESCRIPTOR_LENGTH) {
+                    byteBuffer.reset()
+                    byteBuffer.position(byteBuffer.position() + SLOT_OFFSET)
+                    bMaxSlotIndex = byteBuffer.get()
+                    bVoltageSupport = byteBuffer.get()
+                    dwProtocols = byteBuffer.int
+                    byteBuffer.reset()
+                    byteBuffer.position(byteBuffer.position() + FEATURES_OFFSET)
+                    dwFeatures = byteBuffer.int
+                    hasCcidDescriptor = true
+                    break
+                } else {
+                    byteBuffer.position(byteBuffer.position() + len - 2)
+                }
+            }
+
+            return if (hasCcidDescriptor) {
+                UsbCcidDescription(bMaxSlotIndex, bVoltageSupport, dwProtocols, dwFeatures)
+            } else {
+                null
+            }
+        }
+    }
+
+    enum class Voltage(powerOnValue: Int, mask: Int) {
+        // @formatter:off
+        AUTO(0, 0),
+        V50(1, VOLTAGE_5V0.toInt()),
+        V30(2, VOLTAGE_3V0.toInt()),
+        V18(3, VOLTAGE_1V8.toInt());
+        // @formatter:on
+
+        val mask = powerOnValue.toByte()
+        val powerOnValue = mask.toByte()
+    }
+
+    private fun hasFeature(feature: Int) = (dwFeatures and feature) != 0
+
+    val voltages: List<Voltage>
+        get() {
+            if (hasFeature(FEATURE_AUTOMATIC_VOLTAGE)) return listOf(Voltage.AUTO)
+            return Voltage.entries.filter { (it.mask.toInt() and bVoltageSupport.toInt()) != 0 }
+        }
+
+    val hasAutomaticPps: Boolean
+        get() = hasFeature(FEATURE_AUTOMATIC_PPS)
+
+    val hasT0Protocol: Boolean
+        get() = (dwProtocols and MASK_T0_PROTO) != 0
+}

app-common/src/main/java/im/angry/openeuicc/core/usb/UsbCcidTransceiver.kt

@@ -0,0 +1,417 @@
+package im.angry.openeuicc.core.usb
+
+import android.hardware.usb.UsbDeviceConnection
+import android.hardware.usb.UsbEndpoint
+import android.os.SystemClock
+import android.util.Log
+import im.angry.openeuicc.util.encodeHex
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+
+
+/**
+ * Provides raw, APDU-agnostic transmission to the CCID reader
+ * Adapted from <https://github.com/open-keychain/open-keychain/blob/master/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/CcidTransceiver.java>
+ */
+@Suppress("unused")
+class UsbCcidTransceiver(
+    private val usbConnection: UsbDeviceConnection,
+    private val usbBulkIn: UsbEndpoint,
+    private val usbBulkOut: UsbEndpoint,
+    private val usbCcidDescription: UsbCcidDescription,
+    private val verboseLoggingFlow: Flow<Boolean>
+) {
+    companion object {
+        private const val TAG = "UsbCcidTransceiver"
+
+        private const val CCID_HEADER_LENGTH = 10
+
+        private const val MESSAGE_TYPE_RDR_TO_PC_DATA_BLOCK = 0x80
+        private const val MESSAGE_TYPE_PC_TO_RDR_ICC_POWER_ON = 0x62
+        private const val MESSAGE_TYPE_PC_TO_RDR_ICC_POWER_OFF = 0x63
+        private const val MESSAGE_TYPE_PC_TO_RDR_XFR_BLOCK = 0x6f
+
+        private const val COMMAND_STATUS_SUCCESS: Byte = 0
+        private const val COMMAND_STATUS_TIME_EXTENSION_RQUESTED: Byte = 2
+
+        /**
+         * Level Parameter: APDU is a single command.
+         *
+         * "the command APDU begins and ends with this command"
+         * -- DWG Smart-Card USB Integrated Circuit(s) Card Devices rev 1.0
+         * § 6.1.1.3
+         */
+        const val LEVEL_PARAM_START_SINGLE_CMD_APDU: Short = 0x0000
+