Add new internal functions to kill loader process

The aul_kill_loader() function is added to send the kill request to
launchpad-process-pool.

Adds:
 - aul_kill_loader()
 - aul_kill_loader_for_uid()

Change-Id: Id89226a0bf5dab959505ab437f340bfa6c28201d
Signed-off-by: Hwankyu Jhun <h.jhun@samsung.com>

3 files changed, 124 insertions, 0 deletions

diff --git a/include/aul.h b/include/aul.h
index 6482c758..c4ff8355 100644
--- a/include/aul.h
+++ b/include/aul.h
@@ -3315,6 +3315,35 @@ typedef void (*aul_reply_cb)(bundle *b, int is_cancel, void *user_data);
 int aul_send_launch_request_for_uid(const char *appid, bundle *b, uid_t uid,
 		aul_reply_cb reply_cb, aul_result_cb result_cb, void *user_data);
 
+/**
+ * @brief Sends the kill request to the running loader process.
+ * @since_tizen 8.0
+ * @remarks This function is only available for system and user daemons.
+ * @param[in]   loader_name     The loader name
+ * @return      @c 0 on success,
+ *              otherwise a negative error value
+ * @retval      #AUL_R_OK       Successful
+ * @retval      #AUL_R_EINVAL   Invalid parameter
+ * @retval      #AUL_R_ECOMM    Communication error on send
+ * @retval      #AUL_R_EILLACC  Permission denied
+ */
+int aul_kill_loader(const char *loader_name);
+
+/**
+ * @brief Sends the kill request to the running loader process.
+ * @since_tizen 8.0
+ * @remarks This function is only available for system and user daemons.
+ * @param[in]   loader_name     The loader name
+ * @param[in]   uid             The target uid
+ * @return      @c 0 on success,
+ *              otherwise a negative error value
+ * @retval      #AUL_R_OK       Successful
+ * @retval      #AUL_R_EINVAL   Invalid parameter
+ * @retval      #AUL_R_ECOMM    Communication error on send
+ * @retval      #AUL_R_EILLACC  Permission denied
+ */
+int aul_kill_loader_for_uid(const char *loader_name, uid_t uid);
+
 #ifdef __cplusplus
         }
 #endif
diff --git a/src/launch.cc b/src/launch.cc
index fffa4370..18166447 100644
--- a/src/launch.cc
+++ b/src/launch.cc
@@ -29,7 +29,9 @@
 #include <sys/types.h>
 #include <ttrace.h>
 
+#include <filesystem>
 #include <memory>
+#include <string>
 #include <utility>
 
 #include "app_request.h"
@@ -46,6 +48,10 @@ using namespace aul::internal;
 
 namespace {
 
+constexpr const char kRunAulDaemonsPath[] = "/run/aul/daemons/";
+constexpr const char kLaunchpadProcessPoolSock[] =
+    ".launchpad-process-pool-sock";
+const int kPadCmdKillLoader = 19;
 constexpr const int TEP_ISMOUNT_MAX_RETRY_CNT = 20;
 
 class ResultInfo {
@@ -861,3 +867,41 @@ extern "C" API int aul_kill_pid_async(pid_t pid,
 
   return AUL_R_OK;
 }
+
+extern "C" API int aul_kill_loader(const char* loader_name) {
+  return aul_kill_loader_for_uid(loader_name, getuid());
+}
+
+extern "C" API int aul_kill_loader_for_uid(const char* loader_name,
+    uid_t uid) {
+  if (loader_name == nullptr) {
+    _E("Invalid parameter");
+    return AUL_R_EINVAL;
+  }
+
+  if (uid < REGULAR_UID_MIN) {
+    uid = tzplatform_getuid(TZ_SYS_DEFAULT_USER);
+    _W("Use system default user ID(%u)", uid);
+  }
+
+  std::string endpoint = kRunAulDaemonsPath + std::to_string(uid) + "/" +
+                         std::string(kLaunchpadProcessPoolSock);
+  if (!std::filesystem::exists(endpoint)) {
+    _E("launchpad socket is not prepared");
+    return AUL_R_ENOENT;
+  }
+
+  int fd = aul_sock_create_launchpad_client(kLaunchpadProcessPoolSock, uid);
+  if (fd < 0) {
+    _E("Failed to create launchpad client socket. error(%d)", fd);
+    return aul_error_convert(fd);
+  }
+
+  tizen_base::Bundle b = { {AUL_K_LOADER_NAME, loader_name} };
+  int ret = aul_sock_send_bundle_with_fd(fd, kPadCmdKillLoader, b.GetHandle(),
+      AUL_SOCK_NOREPLY);
+  if (ret != AUL_R_OK)
+    return aul_error_convert(ret);
+
+  return AUL_R_OK;
+}
diff --git a/tool/aul_test/tests/aul_kill_loader_test.cc b/tool/aul_test/tests/aul_kill_loader_test.cc
new file mode 100644
index 00000000..85449b38
--- /dev/null
+++ b/tool/aul_test/tests/aul_kill_loader_test.cc
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2023 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+
+#include "include/aul.h"
+
+#include "aul_test.hh"
+#include "log_private.hh"
+
+namespace aul_test {
+
+class AulKillLoaderTest : public AulTest {
+ public:
+  AulKillLoaderTest()
+      : AulTest("kill_loader", "aul_kill_loader", "kill_loader <loader_name>") {
+  }
+
+  virtual ~AulKillLoaderTest() {}
+
+  void SetUp() override {}
+
+  void TearDown() override {}
+
+  int Test(int argc, char** argv) override {
+    if (argc < 3) {
+      Usage();
+      return -1;
+    }
+
+    _D("[aul_kill_loader test] %s", argv[2]);
+    return aul_kill_loader(argv[2]);
+  }
+};
+
+AUL_TEST_REGISTER(AulKillLoaderTest, kill_loader_test);
+
+}  // namespace aul_test