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Merge commit '8cb7603b81735909e54f9dddda69d202fa5059e9' into russh

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2025-09-13 00:06:37 -04:00
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14
apps/mobile/app.config.ts
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@@ -60,10 +60,18 @@ const config: ExpoConfig = {
// https://github.com/dylankenneally/react-native-ssh-sftp/issues/20#issuecomment-3286693445
// ../../docs/ios-sim-not-working.md (Update 1)
extraPods: [
{ name: 'CSSH-Binary', podspec: 'https://gist.githubusercontent.com/EthanShoeDev/1ab212949007d7aeabfeb199b7b9e951/raw/8602ec55efdf8c620dbbae93cd54023e2a36a8b9/CSSH-Binary.podspec' },
{ name: 'NMSSH', git: 'https://github.com/EthanShoeDev/NMSSH.git', branch: 'master' },
{
name: 'CSSH-Binary',
podspec:
'https://gist.githubusercontent.com/EthanShoeDev/1ab212949007d7aeabfeb199b7b9e951/raw/8602ec55efdf8c620dbbae93cd54023e2a36a8b9/CSSH-Binary.podspec',
},
{
name: 'NMSSH',
git: 'https://github.com/EthanShoeDev/NMSSH.git',
branch: 'master',
},
],
},
},
},
],
],

8
apps/mobile/package.json
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@@ -35,21 +35,21 @@
"@react-navigation/native": "^7.1.8",
"@tanstack/react-form": "^1.19.5",
"@tanstack/react-query": "^5.87.1",
"expo": "54.0.3",
"expo": "54.0.6",
"expo-build-properties": "~1.0.8",
"expo-clipboard": "~8.0.7",
"expo-constants": "~18.0.8",
"expo-crypto": "~15.0.7",
"expo-dev-client": "~6.0.12",
"expo-document-picker": "~14.0.7",
"expo-file-system": "~19.0.13",
"expo-file-system": "~19.0.14",
"expo-font": "~14.0.8",
"expo-haptics": "~15.0.7",
"expo-image": "~3.0.8",
"expo-linking": "~8.0.8",
"expo-router": "6.0.1",
"expo-router": "6.0.3",
"expo-secure-store": "~15.0.7",
"expo-splash-screen": "~31.0.9",
"expo-splash-screen": "~31.0.10",
"expo-status-bar": "~3.0.8",
"expo-symbols": "~1.0.7",
"expo-system-ui": "~6.0.7",

276
docs/projects/ssh-conn-lib/ios-sim-not-working.md
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@@ -1,15 +1,24 @@
# React Native SSH — iOS simulator limitations & paths forward
*Last updated: 2025-09-12*
_Last updated: 2025-09-12_
## TL;DR
* Our current stack (`react-native-ssh-sftp` → `NMSSH (aanah0 fork)` → prebuilt OpenSSL/libssh2) **fails on the iOS Simulator** because the vendored native libraries are compiled for **iOS device** only (platform: `iphoneos`), not **iOS Simulator** (platform: `iphonesimulator`).
* The proper modern fix is to use **XCFrameworks** that include **both** device and simulator slices, and have NMSSH link against those instead of raw static `.a` libraries.
* We have two main paths:
1. Keep using the existing RN package, but swap NMSSH’s underlying crypto/SSH libs to an **XCFramework** (e.g., from `DimaRU/Libssh2Prebuild`), via a tiny CocoaPods change.
2. Build our **own RN native module** (TurboModule/JSI) that links **libssh2** and **OpenSSL** directly (using or adapting the Libssh2Prebuild scripts), fixing iOS Simulator support and also addressing Android reliability issues (like double “disconnect” callbacks).
- Our current stack (`react-native-ssh-sftp` → `NMSSH (aanah0 fork)` → prebuilt
OpenSSL/libssh2) **fails on the iOS Simulator** because the vendored native
libraries are compiled for **iOS device** only (platform: `iphoneos`), not
**iOS Simulator** (platform: `iphonesimulator`).
- The proper modern fix is to use **XCFrameworks** that include **both** device
and simulator slices, and have NMSSH link against those instead of raw static
`.a` libraries.
- We have two main paths:
1. Keep using the existing RN package, but swap NMSSH’s underlying crypto/SSH
libs to an **XCFramework** (e.g., from `DimaRU/Libssh2Prebuild`), via a
tiny CocoaPods change.
2. Build our **own RN native module** (TurboModule/JSI) that links **libssh2**
and **OpenSSL** directly (using or adapting the Libssh2Prebuild scripts),
fixing iOS Simulator support and also addressing Android reliability issues
(like double “disconnect” callbacks).
---
@@ -17,42 +26,54 @@
### Stack
* App → `react-native-ssh-sftp`
* iOS native → `NMSSH` (via the `aanah0/NMSSH` fork for a newer libssh2 baseline)
* `NMSSH` bundles **precompiled OpenSSL + libssh2** as static libraries.
- App → `react-native-ssh-sftp`
- iOS native → `NMSSH` (via the `aanah0/NMSSH` fork for a newer libssh2
baseline)
- `NMSSH` bundles **precompiled OpenSSL + libssh2** as static libraries.
### Why iOS Simulator builds fail
* Xcode treats **device** and **simulator** as **different platforms**. Since Apple Silicon, both may be `arm64`, but they are **not interchangeable**:
- Xcode treats **device** and **simulator** as **different platforms**. Since
Apple Silicon, both may be `arm64`, but they are **not interchangeable**:
- Device slice: `ios-arm64` (platform: `iphoneos`)
- Simulator slices: `ios-arm64` and/or `ios-x86_64` (platform:
`iphonesimulator`)
* Device slice: `ios-arm64` (platform: `iphoneos`)
* Simulator slices: `ios-arm64` and/or `ios-x86_64` (platform: `iphonesimulator`)
* NMSSH’s vendored libs are device-only (`iphoneos`). When the Simulator build links those, the linker throws:
- NMSSH’s vendored libs are device-only (`iphoneos`). When the Simulator build
links those, the linker throws:
```
ld: building for 'iOS-simulator', but linking in object file .../libcrypto.a[arm64] built for 'iOS'
```
* **XCFrameworks** solve this: they are a bundle containing the correct slices for both platforms. Xcode picks the proper slice automatically.
> Temporary hack (not recommended): exclude `arm64` for the simulator (`EXCLUDED_ARCHS[sdk=iphonesimulator*]=arm64`) to force an x86\_64 sim under Rosetta. This “works” but loses native-sim performance and is brittle.
- **XCFrameworks** solve this: they are a bundle containing the correct slices
for both platforms. Xcode picks the proper slice automatically.
> Temporary hack (not recommended): exclude `arm64` for the simulator
> (`EXCLUDED_ARCHS[sdk=iphonesimulator*]=arm64`) to force an x86_64 sim under
> Rosetta. This “works” but loses native-sim performance and is brittle.
---
## Path 1 — Keep current RN package; replace NMSSH’s vendored libs with an XCFramework
**Goal:** Do *not* change `react-native-ssh-sftp` or the NMSSH **API**. Only change how NMSSH links to OpenSSL/libssh2.
**Goal:** Do _not_ change `react-native-ssh-sftp` or the NMSSH **API**. Only
change how NMSSH links to OpenSSL/libssh2.
### What we’ll use
* **`DimaRU/Libssh2Prebuild`**: ships a ready-made **XCFramework** (“CSSH”) that bundles **libssh2 + OpenSSL** with both **device** and **simulator** slices.
* CocoaPods can consume XCFrameworks via a **binary pod** (`vendored_frameworks`), but Libssh2Prebuild is published for **SwiftPM**. So we add a tiny **`CSSH-Binary` podspec** that points to its zipped XCFramework.
- **`DimaRU/Libssh2Prebuild`**: ships a ready-made **XCFramework** (“CSSH”) that
bundles **libssh2 + OpenSSL** with both **device** and **simulator** slices.
- CocoaPods can consume XCFrameworks via a **binary pod**
(`vendored_frameworks`), but Libssh2Prebuild is published for **SwiftPM**. So
we add a tiny **`CSSH-Binary` podspec** that points to its zipped XCFramework.
### Minimal changes
1. **Fork NMSSH** (from `aanah0/NMSSH`) and edit **`NMSSH.podspec`**
* **Remove** the vendored static libs (the `.a` files).
* **Add** a dependency on `CSSH-Binary` (our binary pod that vends `CSSH.xcframework`).
- **Remove** the vendored static libs (the `.a` files).
- **Add** a dependency on `CSSH-Binary` (our binary pod that vends
`CSSH.xcframework`).
**Podspec diff (conceptual):**
@@ -89,30 +110,40 @@
end
```
* You can host the zip yourself if you want deterministic supply (recommended for CI).
* Ensure license attributions (OpenSSL 3.x: Apache-2.0; libssh2: BSD-3-Clause) are included in our OSS notices.
- You can host the zip yourself if you want deterministic supply (recommended
for CI).
- Ensure license attributions (OpenSSL 3.x: Apache-2.0; libssh2:
BSD-3-Clause) are included in our OSS notices.
3. **Wire via Expo** (`expo-build-properties`) in `app.config.ts`
```ts
[
'expo-build-properties',
{
ios: {
extraPods: [
// Binary pod that vends the XCFramework
{ name: 'CSSH-Binary', podspec: 'https://raw.githubusercontent.com/your-org/cssh-binary/main/CSSH-Binary.podspec' },
// Our NMSSH fork that depends on CSSH-Binary
{ name: 'NMSSH', git: 'https://github.com/your-org/NMSSH.git', branch: 'cssh-xcframework' },
],
},
android: {
packagingOptions: {
pickFirst: ['META-INF/versions/9/OSGI-INF/MANIFEST.MF'],
},
},
},
]
'expo-build-properties',
{
ios: {
extraPods: [
// Binary pod that vends the XCFramework
{
name: 'CSSH-Binary',
podspec:
'https://raw.githubusercontent.com/your-org/cssh-binary/main/CSSH-Binary.podspec',
},
// Our NMSSH fork that depends on CSSH-Binary
{
name: 'NMSSH',
git: 'https://github.com/your-org/NMSSH.git',
branch: 'cssh-xcframework',
},
],
},
android: {
packagingOptions: {
pickFirst: ['META-INF/versions/9/OSGI-INF/MANIFEST.MF'],
},
},
},
];
```
4. **Rebuild**
@@ -125,88 +156,109 @@
**Pros**
* Small surface area; we keep the RN package API intact.
* Correct, future-proof device/simulator packaging via XCFrameworks.
* Easy to maintain once the podspecs are set.
- Small surface area; we keep the RN package API intact.
- Correct, future-proof device/simulator packaging via XCFrameworks.
- Easy to maintain once the podspecs are set.
**Cons/Risks**
* We maintain a **fork of NMSSH** (podspec only).
* Potential conflicts with tools like **Flipper** if they also touch OpenSSL (rare; we can disable Flipper if needed).
* We rely on Libssh2Prebuild versions/tags (or build our own artifacts using their scripts).
- We maintain a **fork of NMSSH** (podspec only).
- Potential conflicts with tools like **Flipper** if they also touch OpenSSL
(rare; we can disable Flipper if needed).
- We rely on Libssh2Prebuild versions/tags (or build our own artifacts using
their scripts).
---
## Path 2 — Build our own RN module (TurboModule/JSI) with libssh2/OpenSSL
**Goal:** Replace `react-native-ssh-sftp` + NMSSH with a **modern RN Native Module** that links libssh2 directly and ships correct device/simulator binaries out of the box.
**Goal:** Replace `react-native-ssh-sftp` + NMSSH with a **modern RN Native
Module** that links libssh2 directly and ships correct device/simulator binaries
out of the box.
### Why consider this
* Full control over the native surface (events, error handling, cancellation, reconnects).
* Fix Android reliability issues we’ve observed (e.g., “disconnect” callback firing multiple times, causing dev crashes).
* Avoid legacy Objective-C wrapper constraints; use **TurboModules/JSI**.
- Full control over the native surface (events, error handling, cancellation,
reconnects).
- Fix Android reliability issues we’ve observed (e.g., “disconnect” callback
firing multiple times, causing dev crashes).
- Avoid legacy Objective-C wrapper constraints; use **TurboModules/JSI**.
### High-level plan
**iOS**
* Use (or adapt) **Libssh2Prebuild build scripts** to produce our own **`libssh2.xcframework`** and **`OpenSSL.xcframework`** (or one combined framework).
* Publish them as a **binary CocoaPod** (like `CSSH-Binary`) *or* vendor the XCFrameworks in our module pod.
* Write a thin Obj-C++/C++ wrapper exposing the SSH API needed by JS (connect/auth/exec/sftp/streaming).
* Export via **TurboModule** (codegen) or **JSI** (C++), and provide a typed TS API in the RN package.
- Use (or adapt) **Libssh2Prebuild build scripts** to produce our own
**`libssh2.xcframework`** and **`OpenSSL.xcframework`** (or one combined
framework).
- Publish them as a **binary CocoaPod** (like `CSSH-Binary`) _or_ vendor the
XCFrameworks in our module pod.
- Write a thin Obj-C++/C++ wrapper exposing the SSH API needed by JS
(connect/auth/exec/sftp/streaming).
- Export via **TurboModule** (codegen) or **JSI** (C++), and provide a typed TS
API in the RN package.
**Android**
* Build **libssh2** against **OpenSSL** (or MbedTLS) with the **NDK**.
* Package `.so` libs per ABI (`arm64-v8a`, `x86_64`, etc.).
* Implement JNI layer with strict **once-only** callbacks (disconnect must be idempotent), and make the public JS API promise/observable based.
* Add tests that assert no multiple “disconnect” emissions.
- Build **libssh2** against **OpenSSL** (or MbedTLS) with the **NDK**.
- Package `.so` libs per ABI (`arm64-v8a`, `x86_64`, etc.).
- Implement JNI layer with strict **once-only** callbacks (disconnect must be
idempotent), and make the public JS API promise/observable based.
- Add tests that assert no multiple “disconnect” emissions.
**Common**
* Define a **stable JS API**:
- Define a **stable JS API**:
- Connection lifecycle (`connect`, `ready`, `disconnect`),
- Auth variants (password, key, agent if supported),
- Exec/PTY streaming,
- SFTP (get/put/mkdir/list/stat),
- Structured errors (error codes, host key checks, timeouts),
- Events (`onData`, `onExit`, `onError`, `onDisconnect`).
* Connection lifecycle (`connect`, `ready`, `disconnect`),
* Auth variants (password, key, agent if supported),
* Exec/PTY streaming,
* SFTP (get/put/mkdir/list/stat),
* Structured errors (error codes, host key checks, timeouts),
* Events (`onData`, `onExit`, `onError`, `onDisconnect`).
* **Testing/CI**: Simulated hosts (Docker) for integration tests; E2E with detox where feasible; CI matrix includes iOS Simulator and Android emulators.
- **Testing/CI**: Simulated hosts (Docker) for integration tests; E2E with detox
where feasible; CI matrix includes iOS Simulator and Android emulators.
**Pros**
* Clean slate, better DX, fewer legacy constraints.
* We can ensure **simulator** support is first-class.
* Fixes Android issues definitively.
- Clean slate, better DX, fewer legacy constraints.
- We can ensure **simulator** support is first-class.
- Fixes Android issues definitively.
**Cons**
* More initial engineering time.
* We own native maintenance across platforms.
- More initial engineering time.
- We own native maintenance across platforms.
---
## Known Android issue in current package
We’ve observed that **disconnect** can trigger the callback **more than once**, which crashes the app in dev (double resolve/reject or repeated event emission). If we keep the current package for now:
We’ve observed that **disconnect** can trigger the callback **more than once**,
which crashes the app in dev (double resolve/reject or repeated event emission).
If we keep the current package for now:
* Add a JS-side **guard** to make `disconnect()` idempotent (ignore subsequent calls/notifications after the first).
* If we fork, fix the native layer so it emits exactly once and cleans up listeners predictably.
- Add a JS-side **guard** to make `disconnect()` idempotent (ignore subsequent
calls/notifications after the first).
- If we fork, fix the native layer so it emits exactly once and cleans up
listeners predictably.
(If we pursue **Path 2**, we’ll design the native layer so all callbacks/promises are strictly single-shot and lifecycle-scoped.)
(If we pursue **Path 2**, we’ll design the native layer so all
callbacks/promises are strictly single-shot and lifecycle-scoped.)
---
## Recommendation
* **Short term:** Implement **Path 1**. It’s the smallest change to unblock Simulator builds:
- **Short term:** Implement **Path 1**. It’s the smallest change to unblock
Simulator builds:
- Add a `CSSH-Binary` binary pod (vend `CSSH.xcframework`).
- Fork NMSSH podspec to depend on it.
- Wire both via `expo-build-properties` `ios.extraPods`.
* Add a `CSSH-Binary` binary pod (vend `CSSH.xcframework`).
* Fork NMSSH podspec to depend on it.
* Wire both via `expo-build-properties` `ios.extraPods`.
* **Medium term:** Plan **Path 2** to remove legacy NMSSH constraints and resolve Android issues thoroughly using a Nitro/TurboModule with direct libssh2 bindings.
- **Medium term:** Plan **Path 2** to remove legacy NMSSH constraints and
resolve Android issues thoroughly using a Nitro/TurboModule with direct
libssh2 bindings.
---
@@ -245,37 +297,46 @@ end
```ts
plugins: [
// ...
[
'expo-build-properties',
{
ios: {
extraPods: [
{ name: 'CSSH-Binary', podspec: 'https://raw.githubusercontent.com/your-org/cssh-binary/main/CSSH-Binary.podspec' },
{ name: 'NMSSH', git: 'https://github.com/your-org/NMSSH.git', branch: 'cssh-xcframework' },
],
},
android: {
packagingOptions: {
pickFirst: ['META-INF/versions/9/OSGI-INF/MANIFEST.MF'],
},
},
},
],
]
// ...
[
'expo-build-properties',
{
ios: {
extraPods: [
{
name: 'CSSH-Binary',
podspec:
'https://raw.githubusercontent.com/your-org/cssh-binary/main/CSSH-Binary.podspec',
},
{
name: 'NMSSH',
git: 'https://github.com/your-org/NMSSH.git',
branch: 'cssh-xcframework',
},
],
},
android: {
packagingOptions: {
pickFirst: ['META-INF/versions/9/OSGI-INF/MANIFEST.MF'],
},
},
},
],
];
```
### D. Build/Release notes
* **Rebuild steps**
- **Rebuild steps**
```bash
npx expo prebuild --platform ios --clean
npx pod-install
npx expo run:ios
```
* **Licenses**: Include OpenSSL and libssh2 license texts in our OSS notice.
* **Flipper**: If linking conflicts appear, disable Flipper in iOS debug builds.
- **Licenses**: Include OpenSSL and libssh2 license texts in our OSS notice.
- **Flipper**: If linking conflicts appear, disable Flipper in iOS debug builds.
### E. Temporary simulator workaround (not recommended long-term)
@@ -285,16 +346,17 @@ In both the app target and Pods project:
EXCLUDED_ARCHS[sdk=iphonesimulator*] = arm64
```
This forces an x86\_64 Simulator under Rosetta, avoiding the immediate link error but losing native-sim performance.
This forces an x86_64 Simulator under Rosetta, avoiding the immediate link error
but losing native-sim performance.
---
**Decision log**
* ✅ Adopt Path 1 now (XCFramework via CSSH + NMSSH podspec tweak).
* 🕒 Plan Path 2 (custom RN module) to address Android bugs and own the full stack.
- ✅ Adopt Path 1 now (XCFramework via CSSH + NMSSH podspec tweak).
- 🕒 Plan Path 2 (custom RN module) to address Android bugs and own the full
stack.
# Updates
- 1. Implemented option 1. Seems to be working in simulator
- 1. Implemented option 1. Seems to be working in simulator

4
docs/todos.md
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@@ -22,7 +22,7 @@
#### Styling and components
- https://www.unistyl.es/
- https://reactnativereusables.com/
- https://reactnativereusables.com/
- https://github.com/Shopify/restyle
- https://docs.expo.dev/versions/latest/sdk/segmented-control/
- https://docs.expo.dev/versions/latest/sdk/ui/
@@ -34,4 +34,4 @@
- https://docs.expo.dev/versions/latest/sdk/webview/
- https://docs.expo.dev/versions/latest/sdk/gl-view/
- https://code.visualstudio.com/docs/terminal/shell-integration
- https://github.com/termux/termux-app/wiki/Termux-Libraries/bd010af15b8434ba136c32fa70a50c504ea04363
- https://github.com/termux/termux-app/wiki/Termux-Libraries/bd010af15b8434ba136c32fa70a50c504ea04363

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