--- /dev/null
+/*
+ * @copyright Copyright (c) 2016-2020 TOYOTA MOTOR CORPORATION.
+ *
+ * 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.
+ */
+
+/**
+ * @file rpc_thread.c
+ * @brief RPC Library Internal Implementation--Processing of Internally Generated Threads
+ *
+ */
+/** @addtogroup RPClib_in */
+/** @{ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <malloc.h>
+#include <fcntl.h>
+#include <sys/time.h>
+#include <sys/select.h>
+#include <sys/poll.h>
+#include <sys/prctl.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <sys/inotify.h>
+
+#include <other_service/rpc.h>
+#include "rpc_internal.h"
+
+#include <native_service/cl_monitor.h>
+#include <native_service/cl_process.h>
+
+/** Sub-threads that wake up in the RPC library */
+static RpcThreadInfo *Thread_info[RPC_MAX_THREADS_IN_PROCESS];
+static int Num_thread_info;
+pthread_t g_rpc_thread = RPC_NO_THREAD;
+UINT32 g_rpc_thread_alive;/**< Sub-thread running */
+
+#define RPC_MAGIC_ID (('R'<<24)|('P'<<16)|('C'<<8)|'L')
+
+/** Pipes used for communication with sub-threads
+ * Read: Main thread, Write: Sub-thread */
+int g_rpc_pipe_main_sub[2] = { -1, -1 };
+
+static pthread_mutex_t process_global_mutex = PTHREAD_MUTEX_INITIALIZER;
+#define PROCESS_MUTEX_LOCK rpc_mutex_lock(&process_global_mutex)
+#define PROCESS_MUTEX_UNLOCK rpc_mutex_unlock(&process_global_mutex)
+
+static void *RpcThreadMain(void *ptr);
+static void NotifyMainThread(RpcThreadInfo *th);
+
+static void KillRpcThread(void);
+static void NotifyAddServer(RpcThreadInfo *th);
+static void NotifyRemoveServer(RpcThreadInfo *th);
+
+static RPC_Result RpcRegistSockName(RpcIdInfo *idinfo, char *client_sock_name, const struct ucred *cr, int wd);
+static RPC_Result RpcCheckSockName(RpcIdInfo *idinfo, RPC_ID client_id);
+static RPC_Result RpcDeleteSockName(RpcIdInfo *idinfo, int wd);
+static RPC_Result RpcAllDeleteSockName(RpcIdInfo *idinfo, int inotify_fd);
+static RPC_Result RpcCheckClientCredential(RpcIdInfo *idinfo, const struct ucred *cr);
+
+#define RPC_SUB_THREAD_WAIT_SEC 5
+
+#define WAIT_FOR_SUB_THREAD(loop_cond, sec) \
+{ \
+ struct timeval timeout; \
+ timeout.tv_sec = sec; \
+ timeout.tv_usec = 0; \
+ \
+ int fd = RPC_pipe_sub_main(th)[PIPE_READ]; \
+ fd_set fds; \
+ \
+ while((loop_cond)) { \
+ FD_ZERO(&fds); \
+ FD_SET(fd, &fds); \
+ int sret = select(fd + 1, &fds, NULL, NULL, &timeout); \
+ if (sret < 0 && errno == EINTR) { \
+ continue; \
+ } else if (sret > 0 && FD_ISSET(fd, &fds)) { \
+ char c; \
+ read(fd, &c, sizeof(c)); \
+ } else { \
+ break; \
+ } \
+ } \
+}
+
+RUNS_IN_CALLERS_THREAD
+ RpcThreadInfo *
+RpcMyThreadInfo(void) {
+ RpcThreadInfo *ret = NULL;
+ int i;
+ pthread_t me = pthread_self();
+
+ PROCESS_MUTEX_LOCK;
+ for(i = 0; i < RPC_MAX_THREADS_IN_PROCESS ; i++) {
+ if (Thread_info[i] != NULL
+ && pthread_equal(Thread_info[i]->thread, me)) {
+ ret = Thread_info[i];
+ break;
+ }
+ }
+ PROCESS_MUTEX_UNLOCK;
+ return ret;
+}
+
+RUNS_IN_CALLERS_THREAD
+ RpcThreadInfo *
+RpcCreateThreadInfo(void) {
+ int i;
+ pthread_t me = pthread_self();
+
+ PROCESS_MUTEX_LOCK;
+ /* Look for a free slot to store the thread info pointer */
+ for(i = 0; i < RPC_MAX_THREADS_IN_PROCESS ; i++) {
+ if (Thread_info[i] != NULL) {
+ if (pthread_equal(Thread_info[i]->thread, me)) { // LCOV_EXCL_BR_LINE 6: double check
+ PROCESS_MUTEX_UNLOCK; // LCOV_EXCL_START 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return Thread_info[i];
+ } // LCOV_EXCL_STOP
+ } else {
+ break;
+ }
+ }
+
+ if (i == RPC_MAX_THREADS_IN_PROCESS) {
+ PROCESS_MUTEX_UNLOCK;
+ //CONFIG_ASSERT("Must increase RPC_MAX_THREADS_IN_PROCESS");
+ RPC_LOG_ERR("Must increase RPC_MAX_THREADS_IN_PROCESS");
+ return NULL;
+ }
+
+ /* Allocate area for thread info */
+ // Because there is a timing when the server sub-thread is accessed without being initialized,
+ // corrected so as to fill up to 0 in the MUTEX.
+ RpcThreadInfo *th = rpc_malloc(sizeof(*th));
+ if (th != NULL) { // LCOV_EXCL_BR_LINE 5: fail safe for libc malloc
+ memset(th, 0, sizeof(*th));
+ Thread_info[i] = th;
+ th->magic = RPC_MAGIC_ID;
+ Num_thread_info++;
+ }
+ PROCESS_MUTEX_UNLOCK;
+
+ if (th == NULL) { // LCOV_EXCL_START 5: fail safe for libc malloc
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RPC_LOG_ERR("Can't alloc thread_info.");
+ return NULL;
+ } // LCOV_EXCL_STOP
+
+ /* Initializing Thread Info */
+ th->thread = me;
+ pthread_mutex_init(&(th->th_mtx), NULL);
+ th->sequence_number = RPC_SEQ_NUM_START;
+
+ return th;
+}
+
+/*
+ * check if the allocated client ID conflicts with the server ID
+ * of the same thread
+ */
+ static int
+RpcCheckIdConflict(RpcThreadInfo *th, RPC_ID id) {
+ RpcIdInfo *idinfo;
+ idinfo = RPC_srvr_idinfo(th);
+ if (idinfo != NULL && RPC_my_id(idinfo) == id) { // LCOV_EXCL_START 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return 1;
+ } // LCOV_EXCL_STOP
+ return 0;
+}
+
+/** Adding IDs with RPC_start()
+ *
+ * - Main: Create and initialize structures and tell sub-threads to add
+ * - Sub: Add pointer to thread info (RpcThreadInfo) and notify it to the main process
+ * - The main process waits for this procedure to finish.
+ * Use id_info->thread_info to determine completion (completed if not NULL)
+ */
+RUNS_IN_CALLERS_THREAD
+ int
+RpcCreateIdInfo(RpcThreadInfo *th,
+ RPC_ID id, RPC_dispatch_func_t dispatch, INT32 secure_check) {
+ RpcIdInfo *id_info = rpc_malloc(sizeof(*id_info));
+ if (id_info == NULL) { // LCOV_EXCL_START 5: fail safe for libc malloc
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return -1;
+ } // LCOV_EXCL_STOP
+ memset(id_info, 0, sizeof(*id_info));
+
+ /*
+ * Creates a Unix domain socket based on a given number of ports
+ */
+#if defined(RPC_USE_UNIX_AUTOBIND)
+ int sock_un = -1, secure_sock_un = -1;
+ socklen_t sa_len;
+ struct sockaddr_un sa_un;
+
+get_id_retry:
+ sock_un = socket(PF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0); /* Datagram socket for receiving API requests */
+ if (sock_un < 0) {
+ RPC_LOG_PERROR("socket");
+ goto error;
+ }
+ SET_NONBLOCK(sock_un);
+ SET_CLOSE_ON_EXEC(sock_un);
+
+ /*
+ * Naming Rules for Unix domain Sockets
+ * Server:(ID=50000-59999)
+ * sa_un.sun_path[0] = 0x00;
+ * sa_un.sun_path[1] = 'S';
+ * sa_un.sun_path[2-5] = sprintf("%04x", ID);
+ *
+ * Client:(ID=1-0xfffff)
+ * sa_un.sun_path[0] = 0x00;
+ * sa_un.sun_path[1-5] = sprintf("%05x", ID);
+ * ID is autobind by kernel during bind(see linux/net/unix/af_unix.c)
+ * ! Since it depends on the unix socket implementations of Linux, be careful when porting to other operating systems.
+ *
+ * ID=50000-59999 is duplicated in Server and Client,
+ * but generated it according to the above rules when sent in the RPClib (see rpc_udp.c)
+ *
+ * Because file deletion is leaked when the system is forcibly terminated and abnormal process termination
+ * by a traditional way to create and bind files under /tmp/RPC/,
+ * change to the above method(2009.02.04,2012.01.21)
+ */
+ memset(&sa_un, 0, sizeof(sa_un));
+ sa_un.sun_family = AF_UNIX;
+ if (dispatch != NULL) { // server
+ RpcSetServerName(sa_un.sun_path, id);
+ sa_len = sizeof(sa_un.sun_family) + SOCK_NAME_LEN;
+ } else { // client
+ // Automatically assign name (ID) by unix_autobind()
+ sa_len = sizeof(sa_un.sun_family);
+ }
+
+#else /* !AUTOBIND */
+ int sock_un = -1;
+ struct sockaddr_un sa_un;
+ sa_un.sun_family = AF_UNIX;
+ rpc_set_socket_name(sa_un.sun_path, id);
+ sock_un = socket(PF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
+ if (sock_un < 0) {
+ RPC_LOG_PERROR("socket(unix)");
+ goto error;
+ }
+ SET_NONBLOCK(sock_un);
+ SET_CLOSE_ON_EXEC(sock_un);
+ unlink(sa_un.sun_path);
+ sa_len = sizeof(sa_un);
+#endif /* !AUTOBIND */
+ if (bind(sock_un, (struct sockaddr *)&sa_un, sa_len) < 0) {
+ RPC_LOG_PERROR("DGRAM : bind(unix), ID:%#x", id);
+ goto error;
+ }
+
+#if defined(RPC_USE_UNIX_AUTOBIND)
+ if (dispatch == NULL) { // client
+ // Retrieves the assigned name (ID)
+ socklen_t len = sizeof(sa_un);
+ if (getsockname(sock_un, (struct sockaddr *)&sa_un, &len) < 0) {
+ perror("getsockname");
+ goto error;
+ }
+ RpcGetClientName(sa_un.sun_path, &id);
+ if (RpcCheckIdConflict(th, id)) { // LCOV_EXCL_BR_LINE 8: dead code, RpcCheckIdConflict always is false
+ // LCOV_EXCL_START 8: dead code, RpcCheckIdConflict always is false
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RPC_LOG_STATE("ID %d conflicts with server -- get next one", id);
+ close(sock_un);
+ goto get_id_retry;
+ } // LCOV_EXCL_STOP
+ RPC_LOG_DEBUG("client %s", sa_un.sun_path + 1);
+ }
+#endif /* AUTOBIND */
+
+ id_info->port = id;
+ id_info->sock = sock_un;
+
+ if (dispatch != NULL) { /* server */
+ rpc_assert(th->srvr_id == NULL); // LCOV_EXCL_BR_LINE 6: double check
+ RpcApicallInfo *apicall = rpc_malloc(sizeof(*apicall));
+ if (apicall == NULL) { // LCOV_EXCL_START 5: fail safe for libc malloc
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ goto error;
+ } // LCOV_EXCL_STOP
+
+ /* Create Socket for Authentication */
+ socklen_t secure_sa_len;
+ struct sockaddr_un secure_sa_un;
+
+ secure_sock_un = socket(PF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0); /* stream socket for authentication */
+ if (secure_sock_un < 0) {
+ RPC_LOG_PERROR("socket");
+ rpc_free(apicall);
+ apicall = NULL;
+ goto error;
+ }
+ SET_NONBLOCK(secure_sock_un);
+ SET_CLOSE_ON_EXEC(secure_sock_un);
+
+ memset(&secure_sa_un, 0, sizeof(secure_sa_un));
+ secure_sa_un.sun_family = AF_UNIX;
+ RpcSetServerSecureName(secure_sa_un.sun_path, id);
+ secure_sa_len = sizeof(secure_sa_un.sun_family) + SECURE_SOCK_NAME_LEN;
+
+ /* Bind socket for authentication */
+ if (bind(secure_sock_un, (struct sockaddr *)&secure_sa_un, secure_sa_len) < 0) {
+ RPC_LOG_PERROR("STREAM : bind(unix), ID:%#x", id);
+ rpc_free(apicall);
+ apicall = NULL;
+ goto error;
+ }
+
+ id_info->secure_sock = secure_sock_un;
+
+ memset(apicall, 0, sizeof(*apicall));
+ apicall->dispatch_func = dispatch;
+ apicall->pipe_sub_main[PIPE_READ] = -1;
+ apicall->pipe_sub_main[PIPE_WRITE] = -1;
+ apicall->timeout_sec = 30; /* Server API processing timeout */
+ apicall->secure_check = secure_check; /* Authentication check by UID list */
+ if (NEED_SECURE_CHECK == secure_check) { /* Initializes the UID list with not-registered if secured given. */
+ apicall->regist_credential_info = NO_REGISTERED;
+ }
+ apicall->sock_info_head = NULL; /* Leading Node of Source Client Socket Info */
+ apicall->client_sock_name_num = 0; /* Number of elements in the source client's socket name list */
+ apicall->in_process_client = RPC_NO_PORT; /* Client RPC_ID during API processing */
+
+ id_info->apicall = apicall;
+ th->srvr_id = id_info;
+
+ /* Creating a pipe for communication pipe from sub-thread to main-thread direction */
+ if (pipe(apicall->pipe_sub_main) != 0) {
+ RPC_LOG_PERROR("pipe");
+ goto error;
+ }
+ SET_NONBLOCK(apicall->pipe_sub_main[PIPE_READ]);
+ SET_CLOSE_ON_EXEC(apicall->pipe_sub_main[PIPE_READ]);
+ SET_NONBLOCK(apicall->pipe_sub_main[PIPE_WRITE]);
+ SET_CLOSE_ON_EXEC(apicall->pipe_sub_main[PIPE_WRITE]);
+
+ PROCESS_MUTEX_LOCK;
+ if (g_rpc_thread == RPC_NO_THREAD) { /* There are no sub-threads. */
+ /* Creating a pipe for communication from main-thread to sub-thread direction */
+ if (pipe(g_rpc_pipe_main_sub) != 0) {
+ RPC_LOG_PERROR("pipe");
+ PROCESS_MUTEX_UNLOCK;
+ goto error;
+ }
+
+ SET_NONBLOCK(g_rpc_pipe_main_sub[PIPE_READ]);
+ SET_CLOSE_ON_EXEC(g_rpc_pipe_main_sub[PIPE_READ]);
+ SET_NONBLOCK(g_rpc_pipe_main_sub[PIPE_WRITE]);
+ SET_CLOSE_ON_EXEC(g_rpc_pipe_main_sub[PIPE_WRITE]);
+
+ /* Creating sub-thread */
+ pthread_t read_th;
+ if (pthread_create(&read_th, NULL, RpcThreadMain, 0) != 0) {
+ RPC_LOG_PERROR("pthread_create");
+ PROCESS_MUTEX_UNLOCK;
+ goto error;
+ }
+ g_rpc_thread = read_th;
+ }
+ PROCESS_MUTEX_UNLOCK;
+
+ /* Instruct a sub-thread to add and wait for completion */
+ NotifyAddServer(th);
+ // LCOV_EXCL_BR_START 15: macro define in rpc_thread.c
+ WAIT_FOR_SUB_THREAD((th->srvr_id->thread_info == NULL),
+ RPC_SUB_THREAD_WAIT_SEC);
+ // LCOV_EXCL_BR_STOP
+ rpc_assert(th->srvr_id->thread_info != NULL); // LCOV_EXCL_BR_LINE 6: double check
+
+ } else { /* dispatch == NULL => client */
+ id_info->count = 1;
+ id_info->thread_info = th;
+ th->clnt_id = id_info;
+ }
+ return 0; /* pgr0524 */
+
+error:
+ if (g_rpc_pipe_main_sub[PIPE_READ] >= 0) { // LCOV_EXCL_BR_LINE 5: fail safe for libc socket
+ close(g_rpc_pipe_main_sub[PIPE_READ]);
+ }
+ if (g_rpc_pipe_main_sub[PIPE_WRITE] >= 0) { // LCOV_EXCL_BR_LINE 5: fail safe for libc socket
+ close(g_rpc_pipe_main_sub[PIPE_WRITE]);
+ }
+ if (id_info->apicall != NULL) {
+ if (id_info->apicall->pipe_sub_main[PIPE_READ] >= 0) {
+ close(id_info->apicall->pipe_sub_main[PIPE_READ]);
+ }
+ if (id_info->apicall->pipe_sub_main[PIPE_WRITE] >= 0) {
+ close(id_info->apicall->pipe_sub_main[PIPE_WRITE]);
+ }
+ rpc_free(id_info->apicall);
+ }
+ if (sock_un != -1) {
+ close(sock_un);
+#if !defined(RPC_USE_UNIX_AUTOBIND)
+ unlink(sa_un.sun_path);
+#endif /* !AUTOBIND */
+ }
+ if (secure_sock_un != -1) {
+ close(secure_sock_un);
+#if !defined(RPC_USE_UNIX_AUTOBIND)
+ unlink(secure_sa_un.sun_path);
+#endif /* !AUTOBIND */
+ }
+ rpc_free(id_info);
+ th->srvr_id = NULL;
+ return -1; /* pgr0524 */
+}
+
+/*
+ * Notify an unfinished request of an error at server termination (RPC_end).
+ */
+ static void
+RpcSendErrorToPendingRequest(RpcThreadInfo *th, RpcIdInfo *idinfo) {
+ UINT16 api_num;
+ RPC_ID client;
+ char *args_string;
+ unsigned int args_size;
+ rpc_send_buf sendbuf;
+ char retcode[10];
+
+ do {
+ api_num = RpcGetAPIRequest(idinfo, &client,
+ &args_string, &args_size);
+ if (api_num > 0) { /* API calls are queued */
+
+ sprintf(retcode, "%08x ", RPC_ERR_Fatal);
+ sendbuf.buf = retcode;
+ sendbuf.bytes = sizeof(retcode) - 1;
+ RpcSendUdp2(idinfo, client, RPC_SEND_TO_CLIENT,
+ RPC_PACKET_APIRETURN, 1, &sendbuf);
+ RPC_LOG_STATE("sent error result to pending client %05x", client);
+ RpcFreeAPIArgsString(args_string);
+ }
+ } while(api_num > 0);
+}
+
+/*
+ * Notify unfinished request of deadlock when deadlock of the server is detected.
+ */
+ static void
+RpcSendDeadlockToPendingRequest(RpcThreadInfo *th, RpcIdInfo *idinfo) {
+ UINT16 api_num;
+ RPC_ID client;
+ char *args_string;
+ unsigned int args_size;
+ rpc_send_buf sendbuf;
+ char retcode[10];
+
+ do {
+ api_num = RpcGetAPIRequest(idinfo, &client,
+ &args_string, &args_size);
+ if (api_num > 0) { /* API calls are queued */
+
+ sprintf(retcode, "%08x ", RPC_ERR_Server_DeadLock);
+ sendbuf.buf = retcode;
+ sendbuf.bytes = sizeof(retcode) - 1;
+ RpcSendUdp2(idinfo, client, RPC_SEND_TO_CLIENT,
+ RPC_PACKET_APIRETURN, 1, &sendbuf);
+ RPC_LOG_STATE("sent deadlock result to pending client %05x", client);
+ RpcFreeAPIArgsString(args_string);
+ }
+ } while(api_num > 0);
+
+ if (RPC_NO_PORT != RPC_apicall_in_process_client(idinfo)) {
+ sprintf(retcode, "%08x ", RPC_ERR_Server_DeadLock);
+ sendbuf.buf = retcode;
+ sendbuf.bytes = sizeof(retcode) - 1;
+ RpcSendUdp2(idinfo, RPC_apicall_in_process_client(idinfo), RPC_SEND_TO_CLIENT,
+ RPC_PACKET_APIRETURN, 1, &sendbuf);
+ RPC_LOG_STATE("sent deadlock result to pending client %05x", RPC_apicall_in_process_client(idinfo));
+ RPC_apicall_in_process_client(idinfo) = RPC_NO_PORT;
+ }
+}
+
+/** Delete RPC_ID Info by RPC_end()
+ *
+ * - Main: Notify sub of deletion of RPC_ID info.
+ * - Sub: Delete a pointer from thread info (RpcThreadInfo) and notify main of that.
+ * - Main waits for this procedure to finish.
+ * Use id_info->thread_info to determine completion (completed if NULL).
+ * Then, release the memory related to RPC_ID info and close the socket.
+ */
+RUNS_IN_CALLERS_THREAD
+ void
+RpcDestroyIdInfo(RpcThreadInfo *th, RpcIdInfo *id_info) {
+ rpc_assert(id_info->count == 0); // LCOV_EXCL_BR_LINE 6: double check
+ if (id_info->apicall) {
+ if (g_rpc_thread_alive != 0) {
+ NotifyRemoveServer(th);
+ /* Wait for a sub-thread to recognize IDinfo deletion */
+ // LCOV_EXCL_BR_LINE 15: macro define in rpc_thread.c
+ WAIT_FOR_SUB_THREAD((th->srvr_id->thread_info != NULL),
+ RPC_SUB_THREAD_WAIT_SEC);
+ // LCOV_EXCL_BR_STOP
+ rpc_assert(th->srvr_id->thread_info == NULL); /* not recognized yet */ // LCOV_EXCL_BR_LINE 6: double check
+ }
+
+ if (id_info->apicall->pipe_sub_main[PIPE_READ] >= 0) {
+ close(id_info->apicall->pipe_sub_main[PIPE_READ]);
+ }
+ if (id_info->apicall->pipe_sub_main[PIPE_WRITE] >= 0) {
+ close(id_info->apicall->pipe_sub_main[PIPE_WRITE]);
+ }
+ if (id_info->secure_sock >= 0) {
+ close(id_info->secure_sock);
+ }
+ rpc_free(id_info->apicall);
+ th->srvr_id = NULL;
+ } else {
+ th->clnt_id = NULL;
+ }
+ rpc_free(id_info);
+}
+
+RUNS_IN_CALLERS_THREAD
+ void
+RpcDestroyThreadInfo(void) {
+ unsigned int i;
+ RpcThreadInfo *th = RpcMyThreadInfo();
+ if (th == NULL) {
+ return;
+ }
+
+ RPC_THREAD_MUTEX_LOCK(th);
+ if (th->thread == RPC_NO_THREAD) { // LCOV_EXCL_BR_LINE 6: double check
+ RPC_THREAD_MUTEX_UNLOCK(th); // LCOV_EXCL_START 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return;
+ } // LCOV_EXCL_STOP
+ th->thread = RPC_NO_THREAD;
+ RPC_THREAD_MUTEX_UNLOCK(th);
+
+ PROCESS_MUTEX_LOCK;
+ /*
+ * Remove the pointer from the global variable.
+ * Subsequent calls to RpcMyThreadInfo() return NULL
+ */
+ for(i = 0; i < RPC_MAX_THREADS_IN_PROCESS ; i++) {
+ if (th == Thread_info[i]) {
+ Thread_info[i] = NULL;
+ Num_thread_info--;
+ break;
+ }
+ }
+ PROCESS_MUTEX_UNLOCK;
+ BUG_ASSERT(i < RPC_MAX_THREADS_IN_PROCESS, "No info in Thread_info[]"); // LCOV_EXCL_BR_LINE 15: marco defined in rpc_internal.h
+
+ if (Num_thread_info == 0 && g_rpc_thread_alive != 0) {
+ KillRpcThread();
+ char name[32];
+ prctl(PR_GET_NAME, name);
+ RPC_LOG_DEBUG("[%s]waiting for sub thread to join...", name);
+ pthread_join(g_rpc_thread, NULL);
+ RPC_LOG_DEBUG("[%s]sub thread joined.", name);
+ g_rpc_thread = RPC_NO_THREAD; /* bug fix */
+ rpc_assert(g_rpc_thread_alive == 0); // LCOV_EXCL_BR_LINE 6: double check
+ close(g_rpc_pipe_main_sub[PIPE_READ]);
+ close(g_rpc_pipe_main_sub[PIPE_WRITE]);
+ }
+
+ if (th->srvr_id != NULL) { // LCOV_EXCL_BR_LINE 6: double check
+ RpcDestroyIdInfo(th, th->srvr_id); // LCOV_EXCL_START 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ th->srvr_id = NULL;
+ } // LCOV_EXCL_STOP
+ if (th->clnt_id != NULL) { // LCOV_EXCL_BR_LINE 6: double check
+ RpcDestroyIdInfo(th, th->clnt_id); // LCOV_EXCL_START 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ th->clnt_id = NULL;
+ } // LCOV_EXCL_STOP
+
+ pthread_mutex_destroy(&(th->th_mtx));
+ rpc_free(th);
+}
+
+#if !defined(RPC_USE_UNIX_AUTOBIND)
+/**
+ * Sub-function of RPC_end_all()
+ *
+ * Assuming releasing memory and closing the socket are processing at immediately after the end of the process,
+ * Suppress socket file leaks by only deleting socket files because to avoid deadlocks and shorten the time
+ * by exclusive processing.
+ */
+ void
+RpcUnlinkSocketFiles(void) {
+ int i;
+ char sock_name[16];
+
+ for(i = 0; i < RPC_MAX_THREADS_IN_PROCESS ; i++) {
+ RpcThreadInfo *th = Thread_info[i];
+ if (th != NULL) {
+ if (th->srvr_id != NULL) {
+ rpc_set_socket_name(sock_name, RPC_port(th->srvr_id));
+ RPC_LOG_STATE("unlink srvr %s", sock_name);
+ unlink(sock_name);
+ }
+ if (th->clnt_id != NULL) {
+ rpc_set_socket_name(sock_name, RPC_port(th->clnt_id));
+ RPC_LOG_STATE("unlink clnt %s", sock_name);
+ unlink(sock_name);
+ }
+ }
+ }
+}
+#endif /* !AUTOBIND */
+
+/*
+ * Deadlock detection check for servers in the thread
+ */
+ static void
+RpcDeadlockCheck(RpcThreadInfo** thread_info, unsigned int num_thread_info) {
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+
+ unsigned int i = 0;
+ for(i = 0 ; i < num_thread_info ; i++) {
+ RpcThreadInfo *th = thread_info[i];
+ RpcIdInfo *idinfo = th->srvr_id;
+ CL_MonitorEntry_t entry;
+
+ if (0 == CL_MonitorGetEntry(CL_MONITOR_TYPE_RPC, RPC_port(idinfo), &entry)) {
+ if (entry.state == CL_MONITOR_STATE_RUN && entry.timeout <= ts.tv_sec) {
+ RPC_LOG_ERR("Time Out : RPC_ID = %#x API_NUM = %#x", entry.id, entry.user_data);
+ fprintf(stderr, "Time Out : RPC_ID = %#x API_NUM = %#x\n", entry.id, entry.user_data);
+ RpcSendDeadlockToPendingRequest(th, idinfo);
+ }
+ }
+ }
+}
+/** Main functions of the sub-threads (READING THREAD)
+*/
+RUNS_IN_READING_THREAD
+ static void *
+RpcThreadMain(void *ptr __attribute__((unused))) {
+ struct pollfd wait_files[RPC_MAX_FD_IN_PROCESS];
+ RpcThreadInfo *thread_info[RPC_MAX_THREADS_IN_PROCESS];
+ unsigned int num_thread_info = 0;
+
+ unsigned int poll_num;
+ int need_reset_sockfd = 1;
+ int normal_exit = 0;
+ RPC_Result result;
+ unsigned int i, j;
+
+ /* Monitoring for clients process with inotify() *//* Monitoring target filename */
+ const int inotify_fd = inotify_init1(IN_CLOEXEC); /* fd for process monitoring with inotify() */
+
+ UINT8 readbuf[RPC_UDP_PACKET_SIZE];
+ memset(readbuf, 0, sizeof(UINT8) * RPC_UDP_PACKET_SIZE);
+
+ g_rpc_thread_alive = 1;
+
+ CL_MonitorInit(CL_MONITOR_INIT_USER); /* Using the API for Error Monitoring */
+
+ // Name the thread created in the RPClib (append "_R")
+#define RPC_APPEND_NAME "_R"
+#ifndef PRF_SIZE_PROCESSNAME
+#define PRF_SIZE_PROCESSNAME 8 /* Limit name length for Profiler Analysis Tools */
+#endif
+ {
+ char *p, name[32];
+ prctl(PR_GET_NAME, name);
+ name[PRF_SIZE_PROCESSNAME] = '\0';
+ if (strlen(name) + strlen(RPC_APPEND_NAME) > PRF_SIZE_PROCESSNAME) {
+ p = name + PRF_SIZE_PROCESSNAME - strlen(RPC_APPEND_NAME);
+ } else {
+ p = name + strlen(name);
+ }
+ strcpy(p, RPC_APPEND_NAME);
+ prctl(PR_SET_NAME, name);
+ }
+
+ /* Set the communication pipe with the main thread to poll fd */
+ poll_num = 1;
+ wait_files[0].fd = g_rpc_pipe_main_sub[PIPE_READ];
+ wait_files[0].events = POLLIN;
+
+restart:
+ for( ; ; ) {
+ if (need_reset_sockfd) {
+ /* Set the UDP socket of each RPC_ID to poll fd */
+ PROCESS_MUTEX_LOCK;
+ for(i = 0, j = 0 ; i < RPC_MAX_THREADS_IN_PROCESS ; i++) {
+ if (Thread_info[i] != NULL) {
+ if (Thread_info[i]->magic != RPC_MAGIC_ID) { // LCOV_EXCL_BR_LINE 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RPC_LOG_ERR("Someone(me?) destroyed my area!"); // LCOV_EXCL_LINE 6: double check
+ }
+ if (Thread_info[i]->srvr_id != NULL
+ && Thread_info[i]->srvr_id->thread_info != NULL) {
+ thread_info[j] = Thread_info[i];
+ j++;
+ }
+ }
+ }
+ PROCESS_MUTEX_UNLOCK;
+ num_thread_info = j;
+
+ poll_num = 1;
+ /* Register fd for monitoring with inotify() in poll() */
+ wait_files[1].fd = inotify_fd;
+ wait_files[1].events = POLLIN;
+
+ poll_num = 2;
+ for(i = 0 ; i < num_thread_info ; i++) {
+ /* Datagram socket for API request */
+ wait_files[poll_num].fd = thread_info[i]->srvr_id->sock; /* pgr0000 */
+ wait_files[poll_num].events = POLLIN;
+ poll_num++;
+ // LCOV_EXCL_BR_START 5: fail safe for libc listen
+ /* Authentication stream socket */
+ if (0 != listen(thread_info[i]->srvr_id->secure_sock, 10)) { /* Number of queues */
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RPC_LOG_PERROR("listen(unix)"); // LCOV_EXCL_LINE 5: fail safe for libc listen
+ }
+ // LCOV_EXCL_BR_STOP
+ wait_files[poll_num].fd = thread_info[i]->srvr_id->secure_sock;
+ wait_files[poll_num].events = POLLIN;
+ poll_num++;
+ }
+ need_reset_sockfd = 0;
+ }
+
+ int pollret;
+ pollret = poll(wait_files, poll_num, TIMEOUT_FOR_DEADLOCK_CHECK);
+
+ int save_errno = errno;
+
+ RpcDeadlockCheck(thread_info, num_thread_info);
+ if (pollret < 0) { // LCOV_EXCL_BR_LINE 5: fail safe for libc poll
+ if (save_errno == EINTR) { // LCOV_EXCL_START 5: fail safe for libc poll
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ continue;
+ } else {
+ rpc_assert(pollret > 0);
+ goto exit_read_thread;
+ } // LCOV_EXCL_STOP
+ }
+
+ /* Commands from the main thread (via pipe) */
+ if ((wait_files[0].revents & POLLIN) == POLLIN) {
+ char buf[RPC_MAIN_SUB_COMMAND_SIZE];
+ long ret, arg;
+ int cmd;
+ RpcThreadInfo *th;
+ ret = read(wait_files[0].fd, buf, sizeof(buf));
+ if (ret == sizeof(buf)) {
+ sscanf(buf, RPC_MAIN_SUB_COMMANDs, &cmd, &arg);
+ switch(cmd) {
+ case RPC_COMMAND_ADD_SERVER:
+ th = (RpcThreadInfo *)arg;
+ th->srvr_id->thread_info = th; /* Indicate the completion of the processing */
+ NotifyMainThread(th);
+ need_reset_sockfd = 1;
+ goto restart;
+ break;
+
+ case RPC_COMMAND_REMOVE_SERVER:
+ th = (RpcThreadInfo *)arg;
+ RpcSendErrorToPendingRequest(th, th->srvr_id);
+
+ RpcAllDeleteSockName(th->srvr_id, inotify_fd); /* delete client_sock_name_list */
+ rpc_free((th->srvr_id)->apicall->uid_list); /* delete uid_list */
+ rpc_free((th->srvr_id)->apicall->gid_list); /* delete gid_list */
+
+ th->srvr_id->thread_info = NULL;/* Indicate the completion of the processing */
+ NotifyMainThread(th);
+ need_reset_sockfd = 1;
+ goto restart;
+ break;
+
+ case RPC_COMMAND_EXIT:
+ /************ Termination request from the parent thread *************/
+ RPC_LOG_DEBUG("Received exit command from main thread.");
+ normal_exit = 1;
+ goto exit_read_thread;
+ break;
+ } /* switch */
+ } /* if (ret == sizeof(buf)) */
+ } /* Complete the processing of commands from the main thread */
+
+ /* Client Monitoring Events with inotify() */
+ if ((wait_files[1].revents & POLLIN) == POLLIN) {
+ UINT32 read_len = 0;
+ int length = 0;
+ char *buffer;
+ buffer = (char *)rpc_malloc(BUF_LEN);
+ if (NULL == buffer) {// LCOV_EXCL_START 5: fail safe for libc malloc
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RPC_LOG_ERR("rpc_malloc() ERROR.");
+ goto exit_read_thread;
+ } // LCOV_EXCL_STOP
+
+ if( (length = (int)read( inotify_fd, buffer, BUF_LEN ) ) < 0 ) { // LCOV_EXCL_START 5: fail safe for libc read
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RPC_LOG_PERROR("inotify read() ERROR.");
+ rpc_free(buffer);
+ buffer = NULL;
+ goto exit_read_thread;
+ } // LCOV_EXCL_STOP
+ while ( read_len < length ) {
+ struct inotify_event *event = ( struct inotify_event * )&buffer[read_len];
+
+ if ( event->mask & IN_DELETE_SELF ) {/* Terminating a Client Process */
+ int i; /* Looping variable */
+
+ /* Delete the source socket name from all RpcThreadInfo in the received thread */
+ for(i = 0 ; i < num_thread_info ; i++) {
+ RpcThreadInfo *th = thread_info[i];
+ RpcDeleteSockName(th->srvr_id, event->wd);
+ }
+ }
+ read_len += (UINT32)(EVENT_SIZE + event->len); /* Size of the inotify_event structure */
+ }
+ rpc_free(buffer);
+ goto restart;
+ } /* Client Monitoring Events Completed with inotify() */
+
+ for(i = 2 ; i < poll_num ; i++) {
+ /* Event to the API request datagram socket */
+ if ((i % 2 == 0) && ((wait_files[i].revents & POLLIN) == POLLIN)) {
+ unsigned int thread_info_num = ((i/2) - 1); /* Compute thread_info[thread_info_num] with events */
+ RpcThreadInfo *th = thread_info[thread_info_num]; /* pgr0000 */
+ RpcIdInfo *idinfo = th->srvr_id;
+ for(;;) {
+ /* RPClib packet received */
+ int readret = RpcReadUdpPacket(idinfo, readbuf);
+ if (readret < 0) { // LCOV_EXCL_BR_LINE 5: fail safe for libc recvfrom
+ rpc_assert(readret >= 0); // LCOV_EXCL_START 5: fail safe for libc recvfrom
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ goto exit_read_thread;
+ // LCOV_EXCL_STOP
+ } else if (readret == 0) {
+ break;
+ }
+ /* successfully read udp packets */
+ /* parse the packet and queue events */
+ RPC_ID sender = RPC_NO_ID;
+ UINT32 seq_num = 0;
+ UINT32 size = 0;
+ RPC_packet_type command = RPC_PACKET_NONE;
+ if (RpcParsePacketHeader((const char *)readbuf, &command, &sender, &seq_num, &size) != RPC_OK) { // LCOV_EXCL_BR_LINE 11: Unexpected branch // NOLINT(readability/nolint)
+ goto exit_read_thread;
+ }
+
+ long int api_num;
+ char *buff;
+
+ switch(command) {
+ case RPC_PACKET_APICALL:
+ if (RPC_DEBUG != NULL) { // LCOV_EXCL_BR_LINE 7: debug
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ printf("RPC[%s]: received APIcall\n", RPC_DEBUG); // LCOV_EXCL_LINE 7: debug
+ }
+ // Return response without queuing for ALIVE query
+ api_num = strtol((const char *)(readbuf + RPC_PACKET_HEADER_LEN), NULL, 10);
+ if (api_num == RPC_API_NUM_RPC_ALIVE) {
+ RpcSendUdpResponse(idinfo, sender, RPC_SEND_TO_CLIENT,
+ RPC_RESPONSE_APICALL,
+ seq_num, "OK", sizeof("OK"));
+ break;
+ }
+
+ /* Return BUSY if secure and unregistered in UID-list */
+ if ((NEED_SECURE_CHECK == RPC_secure_check(idinfo))
+ && (NO_REGISTERED == RPC_regist_credential_info(idinfo))) {
+ RpcSendUdpResponse(idinfo, sender, RPC_SEND_TO_CLIENT,
+ RPC_RESPONSE_APICALL,
+ seq_num, "BUSY", sizeof("BUSY"));
+ RPC_LOG_ERR("Need UID list register.");
+ break;
+ }
+
+ result = RpcQueueAPIRequestBefore(idinfo, size, (char**)&buff);
+ if (result == RPC_OK) {
+ /* Check whether the source has been authenticated */
+ if(RPC_OK == RpcCheckSockName(idinfo, sender)) { /* Registerd the name of the source socket */
+ RpcSendUdpResponse(idinfo, sender, RPC_SEND_TO_CLIENT,
+ RPC_RESPONSE_APICALL,
+ seq_num, "OK", sizeof("OK"));
+ RpcQueueAPIRequestAfter(idinfo, sender,
+ (const char *)(readbuf + RPC_PACKET_HEADER_LEN),
+ size, buff);
+ } else { /* Not registered (in other words, first communication with the source client) */
+ /* Authentication request to the client */
+ RPC_THREAD_MUTEX_UNLOCK(idinfo->thread_info);
+ RpcSendUdpResponse(idinfo, sender, RPC_SEND_TO_CLIENT,
+ RPC_RESPONSE_APICALL,
+ seq_num, "CERT", sizeof("CERT"));
+ rpc_free(buff);
+ break;
+ }
+ } else if (result == RPC_ERR_Busy) { // LCOV_EXCL_BR_LINE 5: fail safe for libc malloc
+ RpcSendUdpResponse(idinfo, sender, RPC_SEND_TO_CLIENT,
+ RPC_RESPONSE_APICALL,
+ seq_num, "BUSY", sizeof("BUSY"));
+ } else { // LCOV_EXCL_START 5: fail safe for libc malloc
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RpcSendUdpResponse(idinfo, sender, RPC_SEND_TO_CLIENT,
+ RPC_RESPONSE_APICALL,
+ seq_num, "ERR", sizeof("ERR"));
+ RPC_LOG_ERR("queueing APIcall failed.(%d)", result);
+ goto exit_read_thread;
+ } // LCOV_EXCL_STOP
+ NotifyMainThread(th);
+ if (RPC_DEBUG != NULL) { // LCOV_EXCL_BR_LINE 7: debug
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ printf("RPC[%s]: notified APIcall\n", RPC_DEBUG); // LCOV_EXCL_LINE 7: debug
+ }
+ break;
+
+ default:
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ BUG_ASSERT(0, "Unknown UDP packet type"); // LCOV_EXCL_LINE 15: marco defined in rpc_internal.h
+ goto exit_read_thread;
+ break;
+ } /* switch(command) */
+ }/* for(;;) */
+
+ /* Event to the stream socket for authentication */
+ } else if ((i % 2 != 0) && ((wait_files[i].revents & POLLIN) == POLLIN)) {
+ unsigned int thread_info_num = ((i-1)/2 - 1); /* Compute thread_info[thread_info_num] with events */
+ struct sockaddr_un client_sa_un;
+ socklen_t client_len = sizeof(struct sockaddr_un);
+ struct ucred cr; /* Structure of client credit info */
+ RpcCertifyResult send_ret; /* Authentication result to pass to the client */
+ RpcThreadInfo *th = thread_info[thread_info_num];
+ RpcIdInfo *idinfo = th->srvr_id;
+
+ send_ret.certify_res = CERTIFY_NG;
+ send_ret.srvr_pid = 0;
+
+ /* Obtain client credit info from a connected socket */
+ int accept_sock = accept4(wait_files[i].fd, (struct sockaddr *)&client_sa_un, &client_len, SOCK_CLOEXEC);
+ int ret = getsockopt(accept_sock, SOL_SOCKET, SO_PEERCRED, &cr, &client_len);
+ if (ret == 0) { // LCOV_EXCL_BR_LINE 5: fail safe for libc getsockopt
+ client_sa_un = (struct sockaddr_un )client_sa_un;
+ /* Check if UID of client is allowed to communicate */
+ if (RPC_OK == RpcCheckClientCredential(idinfo, &cr)) {
+
+ /* Obtain the socket name associated with the RPC_ID of the client from the socket info */
+ char client_sock_name[SOCK_NAME_LEN];
+ RpcGetClientNameFromSock(client_sa_un.sun_path, client_sock_name);
+
+ /* Monitoring client processes with inotify */
+ char intfy_fname[32];
+ snprintf(intfy_fname, sizeof(intfy_fname), CL_INTFY_FILENAME_FORMAT, cr.pid);
+ int wd = inotify_add_watch(inotify_fd, intfy_fname, IN_DELETE_SELF);
+ if (0 > wd) { // LCOV_EXCL_BR_LINE 5: fail safe for libc inotify_add_watch
+ RPC_LOG_STATE("intfy_fname is Not Found [%s].", intfy_fname);
+ }
+
+ /* Register the source socket name in the management table */
+ RpcRegistSockName(idinfo, client_sock_name, &cr, wd);
+
+ /* Send server credit info to the client */
+ send_ret.certify_res = CERTIFY_OK;
+ send_ret.srvr_pid = getpid();
+ }
+ }
+
+ /* Send authentication result to client */
+ send(accept_sock, (char*)&send_ret, sizeof(RpcCertifyResult), 0);
+ close(accept_sock);
+
+ goto restart;
+
+ } else if ((wait_files[i].revents & ~POLLIN) != 0) { // LCOV_EXCL_START 5: fail safe for libc poll
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ // POLLERR, etc. on UDP port
+ RPC_LOG_STATE("poll error %x", wait_files[i].revents);
+
+ if ((wait_files[i].revents & POLLNVAL) == POLLNVAL) {
+ need_reset_sockfd = 1;
+ goto restart;
+ }
+ } /* if ((wait_files[i].revents & POLLIN) == POLLIN) */ // LCOV_EXCL_STOP
+
+ } /* processing UDP packets finished */
+
+ } /* end of forever loop */
+
+exit_read_thread:
+
+ g_rpc_thread_alive = 0;
+ for(i = 0 ; i < num_thread_info ; i++) { // LCOV_EXCL_BR_LINE 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ NotifyMainThread(thread_info[i]); /* pgr0000 */ // LCOV_EXCL_LINE 6: double check
+ }
+
+ close(inotify_fd);
+
+ if (normal_exit == 0) { // LCOV_EXCL_BR_LINE 6: double check
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ RPC_LOG_CRIT("sub thread ABNORMALLY exited."); // LCOV_EXCL_LINE 6: double check
+ } else {
+ RPC_LOG_DEBUG("sub thread normally exited.");
+ }
+ return NULL;
+}
+
+/* Notification of sub-thread -> main-thread (via pipe) */
+RUNS_IN_READING_THREAD
+ static void
+NotifyMainThread(RpcThreadInfo *th) {
+ rpc_assert(th->srvr_id->apicall != NULL); // LCOV_EXCL_BR_LINE 6: double check
+ char c = 0;
+ write(th->srvr_id->apicall->pipe_sub_main[PIPE_WRITE], &c, sizeof(c));
+}
+
+/* Notification of main-thread -> sub-thread(via pipe) */
+/* Termination instruction */
+RUNS_IN_CALLERS_THREAD
+ static void
+KillRpcThread(void) {
+ char buf[RPC_MAIN_SUB_COMMAND_SIZE];
+ sprintf(buf, RPC_MAIN_SUB_COMMAND, RPC_COMMAND_EXIT, (unsigned long)0);
+ write(g_rpc_pipe_main_sub[PIPE_WRITE], buf, sizeof(buf));
+}
+
+/* AddRPC_ID */
+RUNS_IN_CALLERS_THREAD
+ static void
+NotifyAddServer(RpcThreadInfo *th) {
+ char buf[RPC_MAIN_SUB_COMMAND_SIZE];
+ sprintf(buf, RPC_MAIN_SUB_COMMAND, RPC_COMMAND_ADD_SERVER,
+ (unsigned long)th);
+ write(g_rpc_pipe_main_sub[PIPE_WRITE], buf, sizeof(buf));
+}
+
+/* Remove RPC_ID */
+RUNS_IN_CALLERS_THREAD
+ static void
+NotifyRemoveServer(RpcThreadInfo *th) {
+ char buf[RPC_MAIN_SUB_COMMAND_SIZE];
+ sprintf(buf, RPC_MAIN_SUB_COMMAND, RPC_COMMAND_REMOVE_SERVER,
+ (unsigned long)th);
+ write(g_rpc_pipe_main_sub[PIPE_WRITE], buf, sizeof(buf));
+}
+
+/* Register the socket name of the source client in the management table. */
+ static RPC_Result
+RpcRegistSockName(RpcIdInfo *idinfo, char *client_sock_name, const struct ucred *cr, int wd) {
+ if ((NULL == idinfo) || (NULL == client_sock_name) || (NULL == cr) || (0 > cr->pid)) { // LCOV_EXCL_BR_LINE 6: void *RpcThreadMain(void *ptr)
+ RPC_LOG_ERR("RpcRegistSockName() : Invalid Param."); // LCOV_EXCL_START 6: void *RpcThreadMain(void *ptr)
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return RPC_ERR_Fatal;
+ } // LCOV_EXCL_STOP
+
+ RpcClientSockNameInfo *sock_name_buf, *current;
+
+ sock_name_buf = rpc_malloc(sizeof(RpcClientSockNameInfo));
+ // LCOV_EXCL_BR_START 5: fail safe for libc malloc
+ if( sock_name_buf == NULL ){
+ return RPC_ERR_Fatal;
+ }
+ // LCOV_EXCL_BR_STOP
+ strcpy(sock_name_buf->client_sock_name, client_sock_name); /* Socket name */
+ sock_name_buf->pid = cr->pid; /* PID */
+ sock_name_buf->uid = cr->uid; /* UID */
+ sock_name_buf->gid = cr->gid; /* GID */
+ sock_name_buf->wd = wd; /* Non-negative inotify monitored descriptors */
+ sock_name_buf->next = NULL; /* Pointer to next node (NULL since last node) */
+
+ if (0 == RPC_client_sock_name_num(idinfo)) {
+ RPC_sock_info_head(idinfo) = sock_name_buf;
+ } else {
+ for (current = RPC_sock_info_head(idinfo); current->next != NULL; current = current->next)
+ ;
+ current->next = sock_name_buf;
+ }
+ RPC_client_sock_name_num_inc(idinfo);
+ return RPC_OK;
+}
+
+/* Check if the socket name of the source client is registered in the management table */
+ static RPC_Result
+RpcCheckSockName(RpcIdInfo *idinfo, RPC_ID client_id) {
+ if ((NULL == idinfo) || (client_id == RPC_NO_ID)) { // LCOV_EXCL_BR_LINE 6: void *RpcThreadMain(void *ptr)
+ RPC_LOG_ERR("RpcCheckSockName() : Invalid Param."); // LCOV_EXCL_START 6: void *RpcThreadMain(void *ptr)
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return RPC_ERR_Fatal;
+ } // LCOV_EXCL_STOP
+
+ char buf[7], client_path_name[SOCK_NAME_LEN]; /* Client socket name */
+
+ /* Converting client_id to the socket name associated with RPC_ID */
+ RpcSetClientName(buf, client_id);
+ memcpy(client_path_name, buf + 1, 5);
+ client_path_name[5] = '\0';
+ RpcClientSockNameInfo *current = RPC_sock_info_head(idinfo);
+
+ /* Search source socket name in management table */
+ while (NULL != current) {
+ if (0 == strcmp(current->client_sock_name, client_path_name)) { /* Registered socket name (authenticated) */
+ return RPC_OK;
+ }
+ current = current->next;
+ }
+ return RPC_ERR_Fatal; /* Not registerd socket name (unauthenticated) */
+}
+
+/* Remove source client socket name from management table */
+ static RPC_Result
+RpcDeleteSockName(RpcIdInfo *idinfo, int wd) {
+ if ((NULL == idinfo) || (0 > wd)) {
+ RPC_LOG_ERR("RpcDeleteSockName() : Invalid Param.");
+ return RPC_ERR_Fatal;
+ }
+
+ RpcClientSockNameInfo *current, *previous;
+ current = RPC_sock_info_head(idinfo);
+ previous = current;
+ int cnt = 0;
+
+ /* Remove Source Socket Name in Management Table */
+ while (NULL != current) {
+ if (wd == current->wd) { /* Delete element */
+ if (0 == cnt) { /* Delete the start element in the management table */
+ RPC_sock_info_head(idinfo) = RPC_sock_info_head(idinfo)->next;
+ rpc_free(current);
+ current = RPC_sock_info_head(idinfo);
+ cnt = -1;
+ } else { /* Delete other than the start element in the management table */
+ previous->next = current->next;
+ rpc_free(current);
+ current = previous->next;
+ }
+ RPC_client_sock_name_num_dec(idinfo);
+ } else { /* Refer to the next node without deleting */
+ previous = current;
+ current = current->next;
+ }
+ cnt ++;
+ }
+
+ return RPC_OK;
+}
+
+/* Remove all source client socket names in the management table */
+ static RPC_Result
+RpcAllDeleteSockName(RpcIdInfo *idinfo, int inotify_fd) {
+ if (NULL == idinfo) { // LCOV_EXCL_BR_LINE 6: double check in void RpcDestroyThreadInfo(void)
+ RPC_LOG_ERR("RpcAllDeleteSockName() : Invalid Param."); // LCOV_EXCL_START 6: void RpcDestroyThreadInfo(void)
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return RPC_ERR_Fatal;
+ } // LCOV_EXCL_STOP
+
+ RpcClientSockNameInfo *current = RPC_sock_info_head(idinfo);
+
+ while (NULL != current) {
+ RpcClientSockNameInfo *previous = current;
+ current = current->next;
+
+ if (0 <= previous->wd) {
+ inotify_rm_watch(inotify_fd, previous->wd);
+ }
+
+ rpc_free(previous);
+ previous = NULL;
+ RPC_client_sock_name_num_dec(idinfo);
+ }
+
+ return RPC_OK;
+}
+
+
+/* Check if client is allowed to communicate */
+ static RPC_Result
+RpcCheckClientCredential(RpcIdInfo *idinfo, const struct ucred *cr) {
+ if ((NULL == idinfo) || (NULL == cr)) { // LCOV_EXCL_BR_LINE 6: double check in void *RpcThreadMain(void *ptr)
+ RPC_LOG_ERR("RpcCheckClientCredential() : Invalid Param."); // LCOV_EXCL_START 6: void *RpcThreadMain(void *ptr)
+ AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
+ return RPC_ERR_Fatal;
+ } // LCOV_EXCL_STOP
+
+ /* Retern RPC_OK if authentication is not required */
+ if (NO_SECURE_CHECK == RPC_secure_check(idinfo)) {
+ return RPC_OK;
+ }
+
+ INT32 i = 0; /* Loop counter */
+
+ /* Search client UID in registered UID list */
+ for(i = 0; i < RPC_uid_num(idinfo); i++) {
+ if(RPC_uid_list(idinfo, i) == cr->uid) { /* Found UID in registered UID list */
+ return RPC_OK;
+ }
+ }
+
+ /* Search client GID in registered GID list */
+ for(i = 0; i < RPC_gid_num(idinfo); i++) {
+ if(RPC_gid_list(idinfo, i) == cr->gid) { /* Found GID in registered GID list. */
+ return RPC_OK;
+ }
+ }
+
+ RPC_LOG_ERR("[Client isn't authenticated!!!!]");
+ return RPC_ERR_Fatal; /* Not found UID in registered UID list */
+}
Code Review / staging / basesystem.git / blobdiff