Merge pull request #31 from es3n1n/wsc-manual-start

feat(loader): start wscsvc manually if needed

defendnot-loader/core/ensure_environment.cpp

@@ -3,6 +3,7 @@
 #include "util/scm.hpp"
 
 #include <format>
+#include <print>
 #include <stdexcept>
 
 namespace loader {
@@ -14,13 +15,33 @@ namespace loader {
 
         auto service = manager.get_service(L"wscsvc");
         if (!service.valid() || !service.query_status()) {
-            throw std::runtime_error(strings::wsc_unavailable_error().data());
+            throw std::runtime_error(std::format("{}\nOpen error: {}", strings::wsc_unavailable_error().data(), GetLastError()));
         }
 
-        const auto state = service.state();
-        if (state != scm::ServiceState::RUNNING) {
-            throw std::runtime_error(std::format("{}\nService state: {}, but should be RUNNING", strings::wsc_unavailable_error(),
-                                                 scm::kServiceStateNames[static_cast<std::underlying_type_t<scm::ServiceState>>(state)]));
+        if (service.state() == scm::ServiceState::RUNNING) {
+            /// Wsc service has been already started, no need to start it ourselves
+            return;
+        }
+
+        /// Let's start the service ourselves
+        std::println("** wscsvc is not running, starting it..");
+        if (!service.start()) {
+            throw std::runtime_error(std::format("{}\nTried to start the service, but go an error: {}", strings::wsc_unavailable_error(), GetLastError()));
+        }
+
+        std::println("** successfully started the service, waiting for it to get up..");
+        while (true) {
+            if (!service.query_status(/*force=*/true)) {
+                throw std::runtime_error(
+                    std::format("{}\nStarted the service, got an error while querying: {}", strings::wsc_unavailable_error(), GetLastError()));
+            }
+
+            if (const auto state = service.state(); state == scm::ServiceState::RUNNING) {
+                std::println("** we are good to go");
+                return;
+            }
+
+            std::this_thread::sleep_for(std::chrono::milliseconds(500));
         }
     }
 } // namespace loader

defendnot-loader/main.cpp

@@ -127,6 +127,12 @@ int main(int argc, char* argv[]) try {
         .enable_autorun = !program.get<bool>("--disable-autorun"),
     };
 
+    /// When running from autorun, we'll be missing all the cli arguments, so lets load some relevant ones
+    if (config.from_autorun) {
+        shared::ctx.deserialize();
+        config.verbose = shared::ctx.verbose;
+    }
+
     if (!config.alloc_console && config.verbose) {
         fatal_print("--silent flag can not be used in combination with --verbose");
     }
@@ -147,7 +153,12 @@ int main(int argc, char* argv[]) try {
     };
 
     wait_for_finish(ipc);
+
+    /// Only create autorun task when not running from autorun, no need to recreate it because we're missing some config vars
+    if (!config.from_autorun) {
         process_autorun(config);
+    }
+
     banner(config);
 
     return EXIT_SUCCESS;

defendnot-loader/util/scm.hpp

@@ -33,8 +33,8 @@ namespace scm {
         ~Service() = default;
 
     public:
-        bool query_status() noexcept {
-            if (status_process_.has_value()) {
+        bool query_status(bool force = false) noexcept {
+            if (!force && status_process_.has_value()) {
                 return true;
             }
 
@@ -73,6 +73,12 @@ namespace scm {
             }
         }
 
+        bool start() noexcept {
+            return StartServiceW(handle_.get(), 0, nullptr) || //
+                   GetLastError() == ERROR_SERVICE_ALREADY_RUNNING;
+        }
+
+    public:
         [[nodiscard]] bool valid() const noexcept {
             return handle_.get() != nullptr;
         }
@@ -87,15 +93,16 @@ namespace scm {
     };
 
     class Manager {
-        constexpr static auto kDesiredPermissions = GENERIC_READ;
+        constexpr static auto kDesiredAccess = GENERIC_READ;
+        constexpr static auto kServiceDesiredAccess = SERVICE_QUERY_STATUS | SERVICE_START;
 
     public:
-        Manager(): handle_(make_sc_handle(OpenSCManagerW(nullptr, nullptr, kDesiredPermissions))) { };
+        Manager(): handle_(make_sc_handle(OpenSCManagerW(nullptr, nullptr, kDesiredAccess))) { };
         ~Manager() = default;
 
     public:
         [[nodiscard]] Service get_service(const std::wstring_view service_name) noexcept {
-            return Service(OpenServiceW(handle_.get(), service_name.data(), kDesiredPermissions));
+            return Service(OpenServiceW(handle_.get(), service_name.data(), kServiceDesiredAccess));
         }
 
     public: