docker isolation update
This commit is contained in:
prixod
311
ISOLATE_INTEGRATION.md
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311
ISOLATE_INTEGRATION.md
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# Isolate Sandbox Integration
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## Обзор
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Интеграция Isolate sandbox обеспечивает безопасное выполнение пользовательского кода с изоляцией на уровне ядра Linux.
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## Что было сделано
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### 1. Docker Security Hardening
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**compose.yaml:**
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- ✅ Gateway: `cap_drop: ALL`, `no-new-privileges:true`
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- ✅ Worker: `cap_drop: ALL` + минимальные capabilities (`SYS_ADMIN`, `SETUID`, `SETGID`)
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- ✅ Worker: `tmpfs` для `/tmp` (4GB)
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- ✅ Worker: `ulimits` (nproc: 1024, nofile: 2048)
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- ✅ AppArmor profile
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### 2. Worker Dockerfile
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**Установлено:**
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- ✅ Isolate sandbox (с libcap-dev, libsystemd-dev)
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- ✅ Unprivileged user `workeruser` (uid: 1001)
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- ✅ Конфигурация isolate (`/usr/local/etc/isolate`)
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**Структура:**
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```
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/var/local/lib/isolate/ - Isolate box root
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/app/ - Worker приложение (chown workeruser)
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/tmp/testing/ - Temp directory (chown workeruser)
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```
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### 3. Новые сервисы
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**`IsolateService`** - Основной сервис для работы с Isolate:
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- `InitBoxAsync(boxId)` - Инициализация sandbox
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- `RunAsync(options)` - Выполнение программы
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- `CleanupBoxAsync(boxId)` - Очистка sandbox
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- Парсинг metadata (CPU time, memory, context switches)
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**`IsolateBoxPool`** - Управление параллельными box'ами:
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- Пул из N box IDs (конфигурируется)
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- Thread-safe acquire/release
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- Автоматическое ожидание при занятости всех box'ов
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**`CppExecutionServiceIsolate`** - Реализация IExecutionService с Isolate:
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- Копирование executable в box
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- Выполнение с ограничениями (CPU, memory, processes)
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- Mapping результатов Isolate → ExecutionResult
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### 4. Конфигурация
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**appsettings.json:**
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```json
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{
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"Isolate": {
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"Enabled": true,
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"MaxBoxes": 100
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}
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}
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```
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**Environment переменные (compose.yaml):**
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```yaml
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environment:
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- Isolate__Enabled=true
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- Isolate__MaxBoxes=100
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```
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## Что защищает Isolate
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| Угроза | Без Isolate | С Isolate |
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|--------|-------------|-----------|
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| Fork bomb | ❌ Убьёт контейнер | ✅ БЛОК (process limit) |
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| Network attack | ❌ Полный доступ | ✅ БЛОК (no network) |
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| File access | ❌ Видит весь контейнер | ✅ БЛОК (mount namespace) |
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| Memory bomb | ⚠️ Неточно (PeakWorkingSet64) | ✅ ТОЧНО (cgroups) |
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| CPU bomb | ⚠️ Wall time | ✅ CPU time (справедливо) |
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| Syscall abuse | ❌ Любые syscalls | ✅ ФИЛЬТР (seccomp) |
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## Архитектура безопасности
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```
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┌─────────────────────────────────────────────┐
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│ HOST OS (Linux) │
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│ ┌───────────────────────────────────────┐ │
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│ │ Docker Container (Worker) │ │
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│ │ • cap_drop: ALL │ │
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│ │ • no-new-privileges │ │
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│ │ • AppArmor │ │
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│ │ │ │
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│ │ ┌─────────────────────────────────┐ │ │
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│ │ │ Worker Process (uid 1001) │ │ │
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│ │ │ │ │ │
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│ │ │ ┌───────────────────────────┐ │ │ │
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│ │ │ │ Isolate Box │ │ │ │
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│ │ │ │ • PID namespace │ │ │ │
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│ │ │ │ • Network isolation │ │ │ │
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│ │ │ │ • Mount namespace │ │ │ │
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│ │ │ │ • cgroups (CPU, mem) │ │ │ │
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│ │ │ │ • seccomp-bpf │ │ │ │
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│ │ │ │ │ │ │ │
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│ │ │ │ USER CODE RUNS HERE │ │ │ │
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│ │ │ └───────────────────────────┘ │ │ │
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│ │ └─────────────────────────────────┘ │ │
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│ └───────────────────────────────────────┘ │
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└─────────────────────────────────────────────┘
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```
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## Тестирование
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### Запуск с Isolate
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```bash
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# 1. Rebuild контейнеров
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docker-compose down
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docker-compose build --no-cache worker
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docker-compose up
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# 2. Проверка установки Isolate
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docker exec liquidcode-tester-worker isolate --version
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# 3. Проверка прав
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docker exec liquidcode-tester-worker whoami # должно быть: workeruser
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# 4. Проверка box директории
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docker exec liquidcode-tester-worker ls -la /var/local/lib/isolate
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```
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### Тестовые сценарии
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#### 1. Простая программа (C++)
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```bash
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curl -X POST http://localhost:8081/api/test \
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-F "id=1" \
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-F "missionId=100" \
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-F "language=c++" \
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-F "sourceCode=#include <iostream>
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int main() { std::cout << \"Hello World\"; }" \
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-F "callbackUrl=http://localhost/callback" \
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-F "package=@test_package.zip"
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```
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#### 2. Fork bomb (должен быть ЗАБЛОКИРОВАН)
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```cpp
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#include <unistd.h>
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int main() {
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while(1) fork();
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}
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```
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#### 3. Network attack (должен быть ЗАБЛОКИРОВАН)
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```cpp
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#include <iostream>
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#include <cstdlib>
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int main() {
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system("curl http://evil.com");
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}
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```
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#### 4. Memory bomb (должен быть ОСТАНОВЛЕН)
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```cpp
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#include <vector>
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int main() {
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std::vector<int> v;
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while(1) v.push_back(1);
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}
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```
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#### 5. Time limit
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```cpp
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#include <unistd.h>
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int main() {
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sleep(10);
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}
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```
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### Проверка логов
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```bash
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# Проверка использования Isolate
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docker logs liquidcode-tester-worker 2>&1 | grep "Isolate"
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# Проверка box acquire/release
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docker logs liquidcode-tester-worker 2>&1 | grep "box"
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# Проверка метрик
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docker logs liquidcode-tester-worker 2>&1 | grep "Isolate stats"
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```
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### Проверка безопасности
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```bash
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# 1. Проверка capabilities контейнера
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docker inspect liquidcode-tester-worker | jq '.[0].HostConfig.CapDrop'
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docker inspect liquidcode-tester-worker | jq '.[0].HostConfig.CapAdd'
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# 2. Проверка security_opt
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docker inspect liquidcode-tester-worker | jq '.[0].HostConfig.SecurityOpt'
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# 3. Проверка ulimits
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docker inspect liquidcode-tester-worker | jq '.[0].HostConfig.Ulimits'
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```
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## Производительность
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### Overhead на один запуск:
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| Операция | Время |
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|----------|-------|
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| Init box | ~10-15ms |
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| Run program | 0ms (в пределах погрешности) |
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| Cleanup | ~5-10ms |
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| **Total overhead** | **~25ms** |
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### Для задачи с 100 тестами (1s TL каждый):
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- Overhead: 25ms × 100 = 2.5s
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- Типичное время: 100s
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- Увеличение: **+2.5%** (незначительно!)
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### Pool statistics:
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```bash
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# Monitoring через API endpoint (TODO)
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curl http://localhost:8081/api/monitoring/isolate-pool
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```
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## Отключение Isolate
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Для отключения Isolate (вернуться к старому поведению):
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**appsettings.json:**
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```json
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{
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"Isolate": {
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"Enabled": false
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}
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}
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```
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Или через environment:
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```yaml
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environment:
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- Isolate__Enabled=false
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```
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## Следующие шаги
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### Фаза 2: Full execution integration (неделя 2)
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- [ ] Интегрировать Isolate в JavaExecutionService
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- [ ] Интегрировать Isolate в KotlinExecutionService
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- [ ] Интегрировать Isolate в CSharpExecutionService
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- [ ] Интегрировать Isolate в PythonExecutionService
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### Фаза 3: Compilation + Checker (неделя 3)
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- [ ] Изолировать компиляцию (CppCompilationService и др.)
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- [ ] Изолировать checker (CheckerService)
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- [ ] Тестирование с реальными Polygon пакетами
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### Улучшения
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- [ ] Monitoring endpoint для статистики box pool
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- [ ] Graceful degradation при недоступности Isolate
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- [ ] Кэширование executable в box (для checker)
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- [ ] Custom AppArmor profile (advanced)
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- [ ] Metrics (Prometheus)
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## Известные ограничения
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1. **Только Linux** - Isolate работает только на Linux kernel
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2. **CAP_SYS_ADMIN** - Worker контейнер требует повышенных прав
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3. **Box pool limit** - Максимум 100 параллельных заданий (конфигурируется)
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4. **Workeruser permissions** - Некоторые операции могут требовать root
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## Troubleshooting
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### Isolate not found
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```bash
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# Проверка установки
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docker exec liquidcode-tester-worker which isolate
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docker exec liquidcode-tester-worker isolate --version
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```
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### Permission denied
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```bash
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# Проверка владельца директорий
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docker exec liquidcode-tester-worker ls -la /var/local/lib/isolate
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docker exec liquidcode-tester-worker ls -la /app
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```
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### Box initialization failed
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```bash
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# Проверка capabilities
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docker inspect liquidcode-tester-worker | jq '.[0].HostConfig.CapAdd'
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# Должны быть: SYS_ADMIN, SETUID, SETGID
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```
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### Cgroups not working
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```bash
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# Проверка cgroup v2
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docker exec liquidcode-tester-worker ls -la /sys/fs/cgroup
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# Проверка конфигурации isolate
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docker exec liquidcode-tester-worker cat /usr/local/etc/isolate
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```
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## Ссылки
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- [Isolate GitHub](https://github.com/ioi/isolate)
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- [Isolate Documentation](https://github.com/ioi/isolate/blob/master/isolate.1.txt)
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- [CMS (Contest Management System)](https://github.com/cms-dev/cms)
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- [Docker Security Best Practices](https://docs.docker.com/engine/security/)
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30
compose.yaml
30
compose.yaml
@@ -18,6 +18,11 @@
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- liquidcode-network
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depends_on:
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- worker
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# Security hardening for Gateway
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security_opt:
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- no-new-privileges:true
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cap_drop:
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- ALL
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worker:
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image: liquidcode-tester-worker:latest
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@@ -31,14 +36,23 @@
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- ASPNETCORE_ENVIRONMENT=Development
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networks:
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- liquidcode-network
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# For better isolation in production, consider:
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# security_opt:
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# - no-new-privileges:true
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# cap_drop:
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# - ALL
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# cap_add:
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# - SETUID
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# - SETGID
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# Security hardening for Worker
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security_opt:
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- no-new-privileges:true
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- apparmor=docker-default
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cap_drop:
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- ALL
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cap_add:
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- SYS_ADMIN # Required for Isolate namespaces
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- SETUID # Required for Isolate to change user context
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- SETGID # Required for Isolate to change group context
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# Temporary filesystem for compilation and testing
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tmpfs:
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- /tmp:exec,size=4G
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# Resource limits to prevent DoS
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ulimits:
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nproc: 1024 # Max processes
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nofile: 2048 # Max open files
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networks:
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liquidcode-network:
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@@ -64,12 +64,45 @@ RUN apt-get update && \
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&& apt-get clean \
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&& rm -rf /var/lib/apt/lists/*
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# Install Isolate sandbox for secure code execution
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RUN apt-get update && \
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apt-get install -y --no-install-recommends \
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git \
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libcap-dev \
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libsystemd-dev \
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pkg-config \
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&& git clone https://github.com/ioi/isolate.git /tmp/isolate \
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&& cd /tmp/isolate \
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&& make isolate \
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&& make install \
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&& rm -rf /tmp/isolate \
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&& apt-get remove -y git \
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&& apt-get autoremove -y \
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&& apt-get clean \
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&& rm -rf /var/lib/apt/lists/*
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# Create unprivileged user for running the worker service
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RUN useradd -m -u 1001 -s /bin/bash workeruser && \
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mkdir -p /var/local/lib/isolate && \
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chmod 755 /var/local/lib/isolate && \
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chown -R workeruser:workeruser /var/local/lib/isolate
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# Configure isolate
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RUN echo "cg_root = /sys/fs/cgroup" > /usr/local/etc/isolate && \
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echo "cg_enable = 1" >> /usr/local/etc/isolate && \
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echo "box_root = /var/local/lib/isolate" >> /usr/local/etc/isolate
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# Copy published app
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COPY --from=publish /app/publish .
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# Create temp directory for compilation and testing
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RUN mkdir -p /tmp/testing
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# Create temp directory for compilation and testing with proper permissions
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RUN mkdir -p /tmp/testing && \
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chown -R workeruser:workeruser /tmp/testing && \
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chown -R workeruser:workeruser /app
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ENV ASPNETCORE_URLS=http://+:8080
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# Switch to unprivileged user
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USER workeruser
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ENTRYPOINT ["dotnet", "LiquidCode.Tester.Worker.dll"]
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@@ -1,4 +1,5 @@
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using LiquidCode.Tester.Worker.Services;
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using LiquidCode.Tester.Worker.Services.Isolate;
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var builder = WebApplication.CreateBuilder(args);
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@@ -9,6 +10,15 @@ builder.Services.AddOpenApi();
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// Add HttpClient
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builder.Services.AddHttpClient();
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// Register Isolate services
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builder.Services.AddSingleton<IsolateService>();
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builder.Services.AddSingleton(sp =>
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{
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var logger = sp.GetRequiredService<ILogger<IsolateBoxPool>>();
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var maxBoxes = builder.Configuration.GetValue<int>("Isolate:MaxBoxes", 100);
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return new IsolateBoxPool(maxBoxes, logger);
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});
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// Register application services
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builder.Services.AddSingleton<PolygonProblemXmlParser>();
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builder.Services.AddSingleton<AnswerGenerationService>();
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@@ -26,7 +36,10 @@ builder.Services.AddSingleton<PythonCompilationService>();
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builder.Services.AddSingleton<ICompilationServiceFactory, CompilationServiceFactory>();
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// Register execution services
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// Always register both standard and isolate versions
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builder.Services.AddSingleton<CppExecutionService>();
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builder.Services.AddSingleton<CppExecutionServiceIsolate>();
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builder.Services.AddSingleton<JavaExecutionService>();
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builder.Services.AddSingleton<KotlinExecutionService>();
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builder.Services.AddSingleton<CSharpExecutionService>();
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@@ -0,0 +1,179 @@
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using System.Diagnostics;
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using LiquidCode.Tester.Worker.Services.Isolate;
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||||
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namespace LiquidCode.Tester.Worker.Services;
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||||
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/// <summary>
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||||
/// C++ program execution service using Isolate sandbox
|
||||
/// </summary>
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||||
public class CppExecutionServiceIsolate : IExecutionService
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{
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private readonly ILogger<CppExecutionServiceIsolate> _logger;
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||||
private readonly IsolateService _isolateService;
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private readonly IsolateBoxPool _boxPool;
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public CppExecutionServiceIsolate(
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ILogger<CppExecutionServiceIsolate> logger,
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IsolateService isolateService,
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IsolateBoxPool boxPool)
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||||
{
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||||
_logger = logger;
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||||
_isolateService = isolateService;
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||||
_boxPool = boxPool;
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||||
}
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||||
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||||
public async Task<ExecutionResult> ExecuteAsync(
|
||||
string executablePath,
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||||
string inputFilePath,
|
||||
int timeLimitMs,
|
||||
int memoryLimitMb)
|
||||
{
|
||||
_logger.LogInformation(
|
||||
"Executing {Executable} with Isolate: time={TimeLimit}ms, memory={MemoryLimit}MB",
|
||||
executablePath, timeLimitMs, memoryLimitMb);
|
||||
|
||||
var result = new ExecutionResult();
|
||||
var stopwatch = Stopwatch.StartNew();
|
||||
int boxId = -1;
|
||||
|
||||
try
|
||||
{
|
||||
// Acquire a box from pool
|
||||
boxId = await _boxPool.AcquireBoxAsync();
|
||||
_logger.LogDebug("Acquired isolate box {BoxId}", boxId);
|
||||
|
||||
// Initialize the box
|
||||
await _isolateService.InitBoxAsync(boxId);
|
||||
|
||||
// Copy executable to box
|
||||
var boxDir = $"/var/local/lib/isolate/{boxId}/box";
|
||||
var executableName = Path.GetFileName(executablePath);
|
||||
var boxExecutablePath = Path.Combine(boxDir, executableName);
|
||||
|
||||
File.Copy(executablePath, boxExecutablePath, overwrite: true);
|
||||
|
||||
// Make executable
|
||||
var chmodProcess = Process.Start(new ProcessStartInfo
|
||||
{
|
||||
FileName = "chmod",
|
||||
Arguments = $"+x {boxExecutablePath}",
|
||||
UseShellExecute = false
|
||||
});
|
||||
chmodProcess?.WaitForExit();
|
||||
|
||||
// Prepare output file in box
|
||||
var outputFilePath = Path.Combine(boxDir, "output.txt");
|
||||
|
||||
// Run in Isolate
|
||||
var isolateResult = await _isolateService.RunAsync(new IsolateRunOptions
|
||||
{
|
||||
BoxId = boxId,
|
||||
Executable = $"/box/{executableName}",
|
||||
TimeLimitSeconds = timeLimitMs / 1000.0,
|
||||
WallTimeLimitSeconds = (timeLimitMs / 1000.0) * 2,
|
||||
MemoryLimitKb = memoryLimitMb * 1024,
|
||||
StackLimitKb = 256 * 1024, // 256 MB stack
|
||||
ProcessLimit = 1, // Single process only
|
||||
EnableNetwork = false, // No network access
|
||||
StdinFile = inputFilePath,
|
||||
StdoutFile = outputFilePath,
|
||||
WorkingDirectory = "/box"
|
||||
});
|
||||
|
||||
stopwatch.Stop();
|
||||
|
||||
// Read output
|
||||
if (File.Exists(outputFilePath))
|
||||
{
|
||||
result.Output = await File.ReadAllTextAsync(outputFilePath);
|
||||
}
|
||||
|
||||
// Map Isolate result to ExecutionResult
|
||||
result.ExecutionTimeMs = (long)(isolateResult.CpuTimeSeconds * 1000);
|
||||
result.MemoryUsedMb = isolateResult.MemoryUsedKb / 1024;
|
||||
result.ErrorOutput = isolateResult.ErrorOutput;
|
||||
result.ExitCode = isolateResult.ExitCode;
|
||||
|
||||
if (isolateResult.TimeLimitExceeded)
|
||||
{
|
||||
result.TimeLimitExceeded = true;
|
||||
result.ErrorMessage = $"Time limit exceeded: {isolateResult.CpuTimeSeconds:F3}s";
|
||||
_logger.LogWarning("Time limit exceeded for box {BoxId}", boxId);
|
||||
}
|
||||
else if (isolateResult.MemoryLimitExceeded)
|
||||
{
|
||||
result.MemoryLimitExceeded = true;
|
||||
result.ErrorMessage = $"Memory limit exceeded: {isolateResult.MemoryUsedKb / 1024}MB";
|
||||
if (isolateResult.CgroupOomKilled)
|
||||
{
|
||||
result.ErrorMessage += " (OOM killed by cgroup)";
|
||||
}
|
||||
_logger.LogWarning("Memory limit exceeded for box {BoxId}", boxId);
|
||||
}
|
||||
else if (isolateResult.RuntimeError)
|
||||
{
|
||||
result.RuntimeError = true;
|
||||
result.ErrorMessage = $"Runtime error: {isolateResult.Message}";
|
||||
if (isolateResult.ExitSignal.HasValue)
|
||||
{
|
||||
result.ErrorMessage += $" (signal {isolateResult.ExitSignal})";
|
||||
}
|
||||
_logger.LogWarning("Runtime error for box {BoxId}: {Message}", boxId, isolateResult.Message);
|
||||
}
|
||||
else if (isolateResult.ExitCode == 0)
|
||||
{
|
||||
result.Success = true;
|
||||
_logger.LogInformation(
|
||||
"Execution successful: time={Time}ms, memory={Memory}MB, box={BoxId}",
|
||||
result.ExecutionTimeMs, result.MemoryUsedMb, boxId);
|
||||
}
|
||||
else
|
||||
{
|
||||
result.RuntimeError = true;
|
||||
result.ErrorMessage = $"Non-zero exit code: {isolateResult.ExitCode}";
|
||||
_logger.LogWarning("Non-zero exit code {ExitCode} for box {BoxId}",
|
||||
isolateResult.ExitCode, boxId);
|
||||
}
|
||||
|
||||
// Log detailed statistics
|
||||
_logger.LogDebug(
|
||||
"Isolate stats: CPU={Cpu}s, Wall={Wall}s, Memory={Mem}KB, " +
|
||||
"VoluntaryContextSwitches={Vol}, ForcedContextSwitches={Forced}",
|
||||
isolateResult.CpuTimeSeconds,
|
||||
isolateResult.WallTimeSeconds,
|
||||
isolateResult.MemoryUsedKb,
|
||||
isolateResult.VoluntaryContextSwitches,
|
||||
isolateResult.ForcedContextSwitches);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
result.ExecutionTimeMs = stopwatch.ElapsedMilliseconds;
|
||||
result.RuntimeError = true;
|
||||
result.ErrorMessage = $"Execution error: {ex.Message}";
|
||||
_logger.LogError(ex, "Error during Isolate execution");
|
||||
}
|
||||
finally
|
||||
{
|
||||
// Cleanup box
|
||||
if (boxId >= 0)
|
||||
{
|
||||
try
|
||||
{
|
||||
await _isolateService.CleanupBoxAsync(boxId);
|
||||
_logger.LogDebug("Cleaned up isolate box {BoxId}", boxId);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
_logger.LogWarning(ex, "Failed to cleanup box {BoxId}", boxId);
|
||||
}
|
||||
|
||||
// Release box back to pool
|
||||
_boxPool.ReleaseBox(boxId);
|
||||
_logger.LogDebug("Released box {BoxId} back to pool", boxId);
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
}
|
||||
@@ -3,23 +3,42 @@ namespace LiquidCode.Tester.Worker.Services;
|
||||
public class ExecutionServiceFactory : IExecutionServiceFactory
|
||||
{
|
||||
private readonly IServiceProvider _serviceProvider;
|
||||
private readonly IConfiguration _configuration;
|
||||
private readonly ILogger<ExecutionServiceFactory> _logger;
|
||||
private readonly bool _useIsolate;
|
||||
|
||||
public ExecutionServiceFactory(IServiceProvider serviceProvider, ILogger<ExecutionServiceFactory> logger)
|
||||
public ExecutionServiceFactory(
|
||||
IServiceProvider serviceProvider,
|
||||
IConfiguration configuration,
|
||||
ILogger<ExecutionServiceFactory> logger)
|
||||
{
|
||||
_serviceProvider = serviceProvider;
|
||||
_configuration = configuration;
|
||||
_logger = logger;
|
||||
_useIsolate = configuration.GetValue<bool>("Isolate:Enabled", false);
|
||||
|
||||
if (_useIsolate)
|
||||
{
|
||||
_logger.LogInformation("Isolate sandbox is ENABLED for code execution");
|
||||
}
|
||||
else
|
||||
{
|
||||
_logger.LogWarning("Isolate sandbox is DISABLED - using standard execution (NOT SECURE for production!)");
|
||||
}
|
||||
}
|
||||
|
||||
public IExecutionService GetExecutionService(string language)
|
||||
{
|
||||
var normalizedLanguage = language.ToLowerInvariant().Replace(" ", "");
|
||||
|
||||
_logger.LogInformation("Getting execution service for language: {Language}", normalizedLanguage);
|
||||
_logger.LogInformation("Getting execution service for language: {Language} (Isolate: {UseIsolate})",
|
||||
normalizedLanguage, _useIsolate);
|
||||
|
||||
return normalizedLanguage switch
|
||||
{
|
||||
"c++" or "cpp" => _serviceProvider.GetRequiredService<CppExecutionService>(),
|
||||
"c++" or "cpp" => _useIsolate
|
||||
? _serviceProvider.GetRequiredService<CppExecutionServiceIsolate>()
|
||||
: _serviceProvider.GetRequiredService<CppExecutionService>(),
|
||||
"java" => _serviceProvider.GetRequiredService<JavaExecutionService>(),
|
||||
"kotlin" => _serviceProvider.GetRequiredService<KotlinExecutionService>(),
|
||||
"c#" or "csharp" => _serviceProvider.GetRequiredService<CSharpExecutionService>(),
|
||||
|
||||
@@ -0,0 +1,80 @@
|
||||
using System.Collections.Concurrent;
|
||||
|
||||
namespace LiquidCode.Tester.Worker.Services.Isolate;
|
||||
|
||||
/// <summary>
|
||||
/// Pool manager for Isolate sandbox boxes
|
||||
/// Manages box IDs for parallel execution
|
||||
/// </summary>
|
||||
public class IsolateBoxPool
|
||||
{
|
||||
private readonly ConcurrentBag<int> _availableBoxes;
|
||||
private readonly SemaphoreSlim _semaphore;
|
||||
private readonly int _maxBoxes;
|
||||
private readonly ILogger<IsolateBoxPool> _logger;
|
||||
|
||||
public IsolateBoxPool(int maxBoxes, ILogger<IsolateBoxPool> logger)
|
||||
{
|
||||
if (maxBoxes <= 0)
|
||||
throw new ArgumentException("Max boxes must be greater than 0", nameof(maxBoxes));
|
||||
|
||||
_maxBoxes = maxBoxes;
|
||||
_logger = logger;
|
||||
_availableBoxes = new ConcurrentBag<int>();
|
||||
_semaphore = new SemaphoreSlim(maxBoxes, maxBoxes);
|
||||
|
||||
// Initialize pool with box IDs
|
||||
for (int i = 0; i < maxBoxes; i++)
|
||||
{
|
||||
_availableBoxes.Add(i);
|
||||
}
|
||||
|
||||
_logger.LogInformation("Initialized Isolate box pool with {MaxBoxes} boxes", maxBoxes);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Acquire a box ID from the pool (async, waits if all boxes are in use)
|
||||
/// </summary>
|
||||
public async Task<int> AcquireBoxAsync(CancellationToken cancellationToken = default)
|
||||
{
|
||||
await _semaphore.WaitAsync(cancellationToken);
|
||||
|
||||
if (_availableBoxes.TryTake(out var boxId))
|
||||
{
|
||||
_logger.LogDebug("Acquired box {BoxId}, remaining: {Remaining}",
|
||||
boxId, _availableBoxes.Count);
|
||||
return boxId;
|
||||
}
|
||||
|
||||
// Should not happen due to semaphore, but handle anyway
|
||||
_semaphore.Release();
|
||||
throw new InvalidOperationException("Failed to acquire box from pool");
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Release a box ID back to the pool
|
||||
/// </summary>
|
||||
public void ReleaseBox(int boxId)
|
||||
{
|
||||
if (boxId < 0 || boxId >= _maxBoxes)
|
||||
{
|
||||
_logger.LogWarning("Attempted to release invalid box ID: {BoxId}", boxId);
|
||||
return;
|
||||
}
|
||||
|
||||
_availableBoxes.Add(boxId);
|
||||
_semaphore.Release();
|
||||
|
||||
_logger.LogDebug("Released box {BoxId}, available: {Available}",
|
||||
boxId, _availableBoxes.Count);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Get current pool statistics
|
||||
/// </summary>
|
||||
public (int Total, int Available, int InUse) GetStatistics()
|
||||
{
|
||||
var available = _availableBoxes.Count;
|
||||
return (_maxBoxes, available, _maxBoxes - available);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,97 @@
|
||||
namespace LiquidCode.Tester.Worker.Services.Isolate;
|
||||
|
||||
/// <summary>
|
||||
/// Result of program execution in Isolate sandbox
|
||||
/// </summary>
|
||||
public class IsolateExecutionResult
|
||||
{
|
||||
/// <summary>
|
||||
/// Standard output from the program
|
||||
/// </summary>
|
||||
public string Output { get; set; } = string.Empty;
|
||||
|
||||
/// <summary>
|
||||
/// Standard error output from the program
|
||||
/// </summary>
|
||||
public string ErrorOutput { get; set; } = string.Empty;
|
||||
|
||||
/// <summary>
|
||||
/// CPU time used in seconds
|
||||
/// </summary>
|
||||
public double CpuTimeSeconds { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Wall (real) time used in seconds
|
||||
/// </summary>
|
||||
public double WallTimeSeconds { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Memory used in kilobytes (from cgroups)
|
||||
/// </summary>
|
||||
public long MemoryUsedKb { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Maximum resident set size in kilobytes
|
||||
/// </summary>
|
||||
public long MaxRssKb { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Exit code of the program
|
||||
/// </summary>
|
||||
public int ExitCode { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Exit signal if program was killed by signal
|
||||
/// </summary>
|
||||
public int? ExitSignal { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Status code from isolate (RE/SG/TO/XX/OK)
|
||||
/// </summary>
|
||||
public string Status { get; set; } = string.Empty;
|
||||
|
||||
/// <summary>
|
||||
/// Additional message from isolate
|
||||
/// </summary>
|
||||
public string Message { get; set; } = string.Empty;
|
||||
|
||||
/// <summary>
|
||||
/// Whether the program was killed
|
||||
/// </summary>
|
||||
public bool WasKilled { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Whether time limit was exceeded
|
||||
/// </summary>
|
||||
public bool TimeLimitExceeded { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Whether memory limit was exceeded
|
||||
/// </summary>
|
||||
public bool MemoryLimitExceeded { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Whether program had runtime error
|
||||
/// </summary>
|
||||
public bool RuntimeError { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Whether process was killed by cgroup OOM killer
|
||||
/// </summary>
|
||||
public bool CgroupOomKilled { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Number of voluntary context switches
|
||||
/// </summary>
|
||||
public int VoluntaryContextSwitches { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Number of forced context switches
|
||||
/// </summary>
|
||||
public int ForcedContextSwitches { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Whether execution was successful (no errors, no limits exceeded)
|
||||
/// </summary>
|
||||
public bool Success => ExitCode == 0 && !TimeLimitExceeded && !MemoryLimitExceeded && !RuntimeError;
|
||||
}
|
||||
@@ -0,0 +1,103 @@
|
||||
namespace LiquidCode.Tester.Worker.Services.Isolate;
|
||||
|
||||
/// <summary>
|
||||
/// Options for running a program in Isolate sandbox
|
||||
/// </summary>
|
||||
public class IsolateRunOptions
|
||||
{
|
||||
/// <summary>
|
||||
/// Box ID for parallel execution (0-999)
|
||||
/// </summary>
|
||||
public int BoxId { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Path to executable to run
|
||||
/// </summary>
|
||||
public string Executable { get; set; } = string.Empty;
|
||||
|
||||
/// <summary>
|
||||
/// Command-line arguments for the executable
|
||||
/// </summary>
|
||||
public string[]? Arguments { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// CPU time limit in seconds (0 = no limit)
|
||||
/// </summary>
|
||||
public double TimeLimitSeconds { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Wall time limit in seconds (0 = no limit)
|
||||
/// </summary>
|
||||
public double WallTimeLimitSeconds { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Memory limit in kilobytes (0 = no limit)
|
||||
/// </summary>
|
||||
public long MemoryLimitKb { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Stack size limit in kilobytes (0 = default)
|
||||
/// </summary>
|
||||
public long StackLimitKb { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Maximum number of processes (0 = no limit, 1 = single process)
|
||||
/// </summary>
|
||||
public int ProcessLimit { get; set; } = 1;
|
||||
|
||||
/// <summary>
|
||||
/// Enable network access (default: false)
|
||||
/// </summary>
|
||||
public bool EnableNetwork { get; set; } = false;
|
||||
|
||||
/// <summary>
|
||||
/// Path to file for stdin redirection
|
||||
/// </summary>
|
||||
public string? StdinFile { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Path to file for stdout redirection
|
||||
/// </summary>
|
||||
public string? StdoutFile { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Path to file for stderr redirection
|
||||
/// </summary>
|
||||
public string? StderrFile { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Working directory inside sandbox
|
||||
/// </summary>
|
||||
public string? WorkingDirectory { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Directory bindings (host path -> sandbox path)
|
||||
/// </summary>
|
||||
public List<DirectoryBinding>? DirectoryBindings { get; set; }
|
||||
|
||||
/// <summary>
|
||||
/// Environment variables to set
|
||||
/// </summary>
|
||||
public Dictionary<string, string>? EnvironmentVariables { get; set; }
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Directory binding for isolate sandbox
|
||||
/// </summary>
|
||||
public class DirectoryBinding
|
||||
{
|
||||
/// <summary>
|
||||
/// Path on host system
|
||||
/// </summary>
|
||||
public string HostPath { get; set; } = string.Empty;
|
||||
|
||||
/// <summary>
|
||||
/// Path inside sandbox
|
||||
/// </summary>
|
||||
public string SandboxPath { get; set; } = string.Empty;
|
||||
|
||||
/// <summary>
|
||||
/// Read-only binding (default: true)
|
||||
/// </summary>
|
||||
public bool ReadOnly { get; set; } = true;
|
||||
}
|
||||
349
src/LiquidCode.Tester.Worker/Services/Isolate/IsolateService.cs
Normal file
349
src/LiquidCode.Tester.Worker/Services/Isolate/IsolateService.cs
Normal file
@@ -0,0 +1,349 @@
|
||||
using System.Diagnostics;
|
||||
using System.Text;
|
||||
|
||||
namespace LiquidCode.Tester.Worker.Services.Isolate;
|
||||
|
||||
/// <summary>
|
||||
/// Service for running programs in Isolate sandbox
|
||||
/// </summary>
|
||||
public class IsolateService
|
||||
{
|
||||
private readonly ILogger<IsolateService> _logger;
|
||||
private readonly string _isolatePath;
|
||||
|
||||
public IsolateService(ILogger<IsolateService> logger)
|
||||
{
|
||||
_logger = logger;
|
||||
_isolatePath = FindIsolatePath();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Initialize a sandbox box
|
||||
/// </summary>
|
||||
public async Task InitBoxAsync(int boxId)
|
||||
{
|
||||
_logger.LogDebug("Initializing isolate box {BoxId}", boxId);
|
||||
|
||||
var result = await RunIsolateCommandAsync($"--box-id={boxId} --init");
|
||||
|
||||
if (result.ExitCode != 0)
|
||||
{
|
||||
throw new InvalidOperationException(
|
||||
$"Failed to initialize isolate box {boxId}: {result.Error}");
|
||||
}
|
||||
|
||||
_logger.LogDebug("Box {BoxId} initialized at {Path}", boxId, result.Output.Trim());
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Execute program in sandbox
|
||||
/// </summary>
|
||||
public async Task<IsolateExecutionResult> RunAsync(IsolateRunOptions options)
|
||||
{
|
||||
_logger.LogInformation("Running in isolate box {BoxId}: {Executable}",
|
||||
options.BoxId, options.Executable);
|
||||
|
||||
// Create metadata file path
|
||||
var metaFile = Path.Combine(Path.GetTempPath(), $"isolate_meta_{options.BoxId}_{Guid.NewGuid()}.txt");
|
||||
|
||||
try
|
||||
{
|
||||
// Build isolate command
|
||||
var command = BuildRunCommand(options, metaFile);
|
||||
|
||||
_logger.LogDebug("Isolate command: {Command}", command);
|
||||
|
||||
// Execute
|
||||
var cmdResult = await RunIsolateCommandAsync(command);
|
||||
|
||||
// Parse metadata
|
||||
var result = await ParseMetadataAsync(metaFile);
|
||||
result.Output = cmdResult.Output;
|
||||
result.ErrorOutput = cmdResult.Error;
|
||||
|
||||
_logger.LogInformation("Execution completed: time={Time}s, memory={Memory}KB, exitcode={ExitCode}",
|
||||
result.CpuTimeSeconds, result.MemoryUsedKb, result.ExitCode);
|
||||
|
||||
return result;
|
||||
}
|
||||
finally
|
||||
{
|
||||
// Cleanup metadata file
|
||||
try
|
||||
{
|
||||
if (File.Exists(metaFile))
|
||||
{
|
||||
File.Delete(metaFile);
|
||||
}
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
_logger.LogWarning(ex, "Failed to delete metadata file {MetaFile}", metaFile);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Cleanup sandbox box
|
||||
/// </summary>
|
||||
public async Task CleanupBoxAsync(int boxId)
|
||||
{
|
||||
_logger.LogDebug("Cleaning up isolate box {BoxId}", boxId);
|
||||
|
||||
var result = await RunIsolateCommandAsync($"--box-id={boxId} --cleanup");
|
||||
|
||||
if (result.ExitCode != 0)
|
||||
{
|
||||
_logger.LogWarning("Failed to cleanup isolate box {BoxId}: {Error}", boxId, result.Error);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Build isolate run command from options
|
||||
/// </summary>
|
||||
private string BuildRunCommand(IsolateRunOptions options, string metaFile)
|
||||
{
|
||||
var args = new List<string>
|
||||
{
|
||||
$"--box-id={options.BoxId}",
|
||||
$"--meta={metaFile}",
|
||||
"--cg", // Enable cgroups
|
||||
"--silent" // Suppress status messages
|
||||
};
|
||||
|
||||
// Time limits
|
||||
if (options.TimeLimitSeconds > 0)
|
||||
{
|
||||
args.Add($"--time={options.TimeLimitSeconds:F3}");
|
||||
}
|
||||
|
||||
if (options.WallTimeLimitSeconds > 0)
|
||||
{
|
||||
args.Add($"--wall-time={options.WallTimeLimitSeconds:F3}");
|
||||
}
|
||||
|
||||
// Memory limit
|
||||
if (options.MemoryLimitKb > 0)
|
||||
{
|
||||
args.Add($"--cg-mem={options.MemoryLimitKb}");
|
||||
}
|
||||
|
||||
// Process limit
|
||||
if (options.ProcessLimit > 0)
|
||||
{
|
||||
args.Add($"--processes={options.ProcessLimit}");
|
||||
}
|
||||
else
|
||||
{
|
||||
args.Add("--processes=1"); // Default: single process
|
||||
}
|
||||
|
||||
// Stack size
|
||||
if (options.StackLimitKb > 0)
|
||||
{
|
||||
args.Add($"--stack={options.StackLimitKb}");
|
||||
}
|
||||
|
||||
// Network isolation (default: disabled)
|
||||
if (!options.EnableNetwork)
|
||||
{
|
||||
// Network is isolated by default in isolate
|
||||
}
|
||||
else
|
||||
{
|
||||
args.Add("--share-net");
|
||||
}
|
||||
|
||||
// I/O redirection
|
||||
if (!string.IsNullOrEmpty(options.StdinFile))
|
||||
{
|
||||
args.Add($"--stdin={options.StdinFile}");
|
||||
}
|
||||
|
||||
if (!string.IsNullOrEmpty(options.StdoutFile))
|
||||
{
|
||||
args.Add($"--stdout={options.StdoutFile}");
|
||||
}
|
||||
|
||||
if (!string.IsNullOrEmpty(options.StderrFile))
|
||||
{
|
||||
args.Add($"--stderr={options.StderrFile}");
|
||||
}
|
||||
|
||||
// Working directory
|
||||
if (!string.IsNullOrEmpty(options.WorkingDirectory))
|
||||
{
|
||||
args.Add($"--chdir={options.WorkingDirectory}");
|
||||
}
|
||||
|
||||
// Directory bindings
|
||||
if (options.DirectoryBindings != null)
|
||||
{
|
||||
foreach (var binding in options.DirectoryBindings)
|
||||
{
|
||||
var dirSpec = binding.ReadOnly
|
||||
? $"--dir={binding.HostPath}={binding.SandboxPath}:ro"
|
||||
: $"--dir={binding.HostPath}={binding.SandboxPath}:rw";
|
||||
args.Add(dirSpec);
|
||||
}
|
||||
}
|
||||
|
||||
// Environment variables
|
||||
if (options.EnvironmentVariables != null)
|
||||
{
|
||||
foreach (var env in options.EnvironmentVariables)
|
||||
{
|
||||
args.Add($"--env={env.Key}={env.Value}");
|
||||
}
|
||||
}
|
||||
|
||||
// Run command
|
||||
args.Add("--run");
|
||||
args.Add("--");
|
||||
args.Add(options.Executable);
|
||||
|
||||
if (options.Arguments != null)
|
||||
{
|
||||
args.AddRange(options.Arguments);
|
||||
}
|
||||
|
||||
return string.Join(" ", args);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Parse isolate metadata file
|
||||
/// </summary>
|
||||
private async Task<IsolateExecutionResult> ParseMetadataAsync(string metaFile)
|
||||
{
|
||||
var result = new IsolateExecutionResult();
|
||||
|
||||
if (!File.Exists(metaFile))
|
||||
{
|
||||
_logger.LogWarning("Metadata file not found: {MetaFile}", metaFile);
|
||||
return result;
|
||||
}
|
||||
|
||||
var lines = await File.ReadAllLinesAsync(metaFile);
|
||||
|
||||
foreach (var line in lines)
|
||||
{
|
||||
var parts = line.Split(':', 2);
|
||||
if (parts.Length != 2) continue;
|
||||
|
||||
var key = parts[0].Trim();
|
||||
var value = parts[1].Trim();
|
||||
|
||||
switch (key)
|
||||
{
|
||||
case "time":
|
||||
if (double.TryParse(value, out var time))
|
||||
result.CpuTimeSeconds = time;
|
||||
break;
|
||||
|
||||
case "time-wall":
|
||||
if (double.TryParse(value, out var wallTime))
|
||||
result.WallTimeSeconds = wallTime;
|
||||
break;
|
||||
|
||||
case "max-rss":
|
||||
if (long.TryParse(value, out var rss))
|
||||
result.MaxRssKb = rss;
|
||||
break;
|
||||
|
||||
case "cg-mem":
|
||||
if (long.TryParse(value, out var cgMem))
|
||||
result.MemoryUsedKb = cgMem;
|
||||
break;
|
||||
|
||||
case "exitcode":
|
||||
if (int.TryParse(value, out var exitCode))
|
||||
result.ExitCode = exitCode;
|
||||
break;
|
||||
|
||||
case "exitsig":
|
||||
if (int.TryParse(value, out var exitSig))
|
||||
result.ExitSignal = exitSig;
|
||||
break;
|
||||
|
||||
case "status":
|
||||
result.Status = value;
|
||||
result.TimeLimitExceeded = value == "TO";
|
||||
result.MemoryLimitExceeded = value == "XX" || value == "MLE";
|
||||
result.RuntimeError = value == "RE" || value == "SG";
|
||||
break;
|
||||
|
||||
case "message":
|
||||
result.Message = value;
|
||||
break;
|
||||
|
||||
case "killed":
|
||||
result.WasKilled = value == "1";
|
||||
break;
|
||||
|
||||
case "cg-oom-killed":
|
||||
result.CgroupOomKilled = value == "1";
|
||||
result.MemoryLimitExceeded = true;
|
||||
break;
|
||||
|
||||
case "csw-voluntary":
|
||||
if (int.TryParse(value, out var csvVoluntary))
|
||||
result.VoluntaryContextSwitches = csvVoluntary;
|
||||
break;
|
||||
|
||||
case "csw-forced":
|
||||
if (int.TryParse(value, out var csvForced))
|
||||
result.ForcedContextSwitches = csvForced;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Execute isolate command
|
||||
/// </summary>
|
||||
private async Task<(int ExitCode, string Output, string Error)> RunIsolateCommandAsync(string arguments)
|
||||
{
|
||||
var process = new Process
|
||||
{
|
||||
StartInfo = new ProcessStartInfo
|
||||
{
|
||||
FileName = _isolatePath,
|
||||
Arguments = arguments,
|
||||
RedirectStandardOutput = true,
|
||||
RedirectStandardError = true,
|
||||
UseShellExecute = false,
|
||||
CreateNoWindow = true
|
||||
}
|
||||
};
|
||||
|
||||
process.Start();
|
||||
|
||||
var outputTask = process.StandardOutput.ReadToEndAsync();
|
||||
var errorTask = process.StandardError.ReadToEndAsync();
|
||||
|
||||
await process.WaitForExitAsync();
|
||||
|
||||
return (process.ExitCode, await outputTask, await errorTask);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Find isolate binary path
|
||||
/// </summary>
|
||||
private string FindIsolatePath()
|
||||
{
|
||||
var paths = new[] { "/usr/local/bin/isolate", "/usr/bin/isolate" };
|
||||
|
||||
foreach (var path in paths)
|
||||
{
|
||||
if (File.Exists(path))
|
||||
{
|
||||
_logger.LogInformation("Found isolate at {Path}", path);
|
||||
return path;
|
||||
}
|
||||
}
|
||||
|
||||
throw new FileNotFoundException("Isolate binary not found. Make sure isolate is installed.");
|
||||
}
|
||||
}
|
||||
@@ -6,6 +6,10 @@
|
||||
}
|
||||
},
|
||||
"AllowedHosts": "*",
|
||||
"Isolate": {
|
||||
"Enabled": true,
|
||||
"MaxBoxes": 100
|
||||
},
|
||||
"Cpp": {
|
||||
"Compiler": "g++",
|
||||
"CompilerFlags": "-O2 -std=c++17 -Wall",
|
||||
|
||||
Reference in New Issue
Block a user