2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
24 #include <sys/socket.h>
25 #include <linux/netlink.h>
26 #include <linux/connector.h>
27 #include <linux/cn_proc.h>
30 #include "stc-plugin-procfs.h"
31 #include "stc-monitor.h"
32 #include "helper-procfs.h"
40 char cmdline[PROC_NAME_MAX];
41 char status[PROC_STATUS_CNT][PROC_BUF_MAX];
44 typedef struct __attribute__ ((aligned(NLMSG_ALIGNTO))) {
45 struct nlmsghdr nl_hdr;
46 struct __attribute__ ((__packed__)) {
48 enum proc_cn_mcast_op cn_mcast;
52 typedef struct __attribute__ ((aligned(NLMSG_ALIGNTO))) {
53 struct nlmsghdr nl_hdr;
54 struct __attribute__ ((__packed__)) {
56 struct proc_event proc_ev;
58 } nl_connector_proc_event_s;
60 static int nl_connector_sock = -1;
61 static guint nl_connector_gsource_id = 0;
62 static GTree *proc_tree;
65 static gboolean __process_nl_connector_message(GIOChannel *source,
66 GIOCondition condition,
69 static int __proc_tree_key_compare(gconstpointer a, gconstpointer b,
70 gpointer UNUSED user_data)
72 proc_key_s *key_a = (proc_key_s *)a;
73 proc_key_s *key_b = (proc_key_s *)b;
75 return key_a->pid - key_b->pid;
78 static void __proc_tree_value_free(gpointer data)
80 proc_value_s *value = (proc_value_s *)data;
85 static void __proc_tree_key_free(gpointer data)
87 proc_key_s *key = (proc_key_s *)data;
92 static proc_value_s * __proc_tree_lookup(const proc_key_s *key)
96 if (proc_tree == NULL) {
97 STC_LOGE("tree is null");
101 lookup = g_tree_lookup(proc_tree, key);
106 static gboolean __proc_tree_foreach_print(gpointer key, gpointer value,
109 proc_key_s *proc_key = (proc_key_s *)key;
110 proc_value_s *proc_value = (proc_value_s *)value;
112 STC_LOGD("Proc pid [\033[1;33m%d\033[0;m] ppid [\033[1;35m%s\033[0;m] "
113 "cmdline [\033[0;34m%s\033[0;m]", proc_key->pid,
114 proc_value->status[PROC_STATUS_PPID], proc_value->cmdline);
119 static void __proc_tree_printall(void)
121 g_tree_foreach(proc_tree, __proc_tree_foreach_print, NULL);
125 static proc_value_s * __proc_tree_find_parent(proc_value_s *value)
127 proc_value_s *parent = NULL;
128 proc_value_s *lookup = value;
132 key.pid = atoi(lookup->status[PROC_STATUS_PPID]);
133 lookup = __proc_tree_lookup(&key);
140 STC_LOGD("\033[0;35mPARENT\033[0;m: tgid[\033[1;33m%s\033[0;m] pid[%s] "
141 "ppid[\033[1;35m%s\033[0;m] cmdline[\033[0;34m%s\033[0;m] name[%s]",
142 parent->status[PROC_STATUS_TGID], parent->status[PROC_STATUS_PID],
143 parent->status[PROC_STATUS_PPID], parent->cmdline,
144 parent->status[PROC_STATUS_NAME]);
150 static void __proc_tree_add(proc_key_s *key, proc_value_s *value)
152 proc_value_s *lookup;
153 proc_value_s *parent;
155 if (proc_tree == NULL) {
156 STC_LOGE("tree is null");
160 if (key == NULL || value == NULL) {
162 STC_LOGE("invalid parameters");
166 lookup = g_tree_lookup(proc_tree, key);
170 proc_key_s *proc_key = MALLOC0(proc_key_s, 1);
171 if (proc_key == NULL) {
172 STC_LOGE("memory allocation failed");
176 proc_value_s *proc_value = MALLOC0(proc_value_s, 1);
177 if (proc_value == NULL) {
178 STC_LOGE("memory allocation failed");
183 memcpy(proc_key, key, sizeof(proc_key_s));
184 memcpy(proc_value, value, sizeof(proc_value_s));
186 g_tree_insert(proc_tree, proc_key, proc_value);
189 __proc_tree_printall();
192 parent = __proc_tree_find_parent(proc_value);
194 stc_plugin_procfs_status_changed(STC_CMD_SET_SERVICE_LAUNCHED, proc_key->pid,
195 parent->cmdline, parent->cmdline, STC_APP_TYPE_SERVICE);
197 stc_plugin_procfs_status_changed(STC_CMD_SET_SERVICE_LAUNCHED, proc_key->pid,
198 proc_value->cmdline, proc_value->cmdline, STC_APP_TYPE_SERVICE);
201 static void __proc_tree_remove(const proc_key_s *key)
203 if (proc_tree == NULL) {
204 STC_LOGE("tree is null");
208 stc_plugin_procfs_status_changed(STC_CMD_SET_TERMINATED, key->pid, NULL,
209 NULL, STC_APP_TYPE_NONE);
211 g_tree_remove(proc_tree, key);
214 __proc_tree_printall();
218 static gboolean __check_excn(char *cmdline)
220 stc_error_e ret = STC_ERROR_NONE;
222 if (cmdline[0] == '(')
225 ret = stc_monitor_check_excn_by_cmdline(cmdline);
226 if (ret == STC_ERROR_UNINITIALIZED ||
227 ret == STC_ERROR_NO_DATA)
233 static void __open_nl_connector_sock(void)
235 __STC_LOG_FUNC_ENTER__;
236 GIOChannel *gio = NULL;
238 if (nl_connector_sock != -1 &&
239 nl_connector_gsource_id != 0) {
240 STC_LOGE("Socket is already open");
241 __STC_LOG_FUNC_EXIT__;
245 if (nl_connector_sock != -1) {
246 close(nl_connector_sock);
247 nl_connector_sock = -1;
250 if (nl_connector_gsource_id != 0) {
251 g_source_remove(nl_connector_gsource_id);
252 nl_connector_gsource_id = 0;
255 nl_connector_sock = create_netlink(NETLINK_CONNECTOR, CN_IDX_PROC);
256 if (nl_connector_sock == -1) {
257 __STC_LOG_FUNC_EXIT__;
261 gio = g_io_channel_unix_new(nl_connector_sock);
262 nl_connector_gsource_id =
263 g_io_add_watch(gio, G_IO_IN | G_IO_ERR | G_IO_HUP,
264 (GIOFunc) __process_nl_connector_message,
266 g_io_channel_unref(gio);
267 __STC_LOG_FUNC_EXIT__;
270 static void __close_nl_connector_sock(void)
272 __STC_LOG_FUNC_ENTER__;
273 if (nl_connector_sock != -1) {
274 close(nl_connector_sock);
275 nl_connector_sock = -1;
278 if (nl_connector_gsource_id != 0) {
279 g_source_remove(nl_connector_gsource_id);
280 nl_connector_gsource_id = 0;
282 __STC_LOG_FUNC_EXIT__;
285 static void __reopen_nl_connector_sock(void)
287 __close_nl_connector_sock();
288 __open_nl_connector_sock();
291 static void __process_event_fork(int tgid, int pid)
293 char cmdline[PROC_NAME_MAX] = {0, };
294 char status[PROC_STATUS_CNT][PROC_BUF_MAX];
296 /* TODO: Add newly created thread to the process tasks */
300 memset(status, 0x0, sizeof(status));
302 if (STC_ERROR_NONE == proc_get_cmdline(pid, cmdline) &&
303 STC_ERROR_NONE == proc_get_status(pid, status)) {
305 if (__check_excn(cmdline)) {
307 STC_LOGD("[%s] monitoring is excepted", cmdline);
315 memset(&key, 0x0, sizeof(proc_key_s));
316 memset(&value, 0x0, sizeof(proc_value_s));
319 for (i = 0; i < PROC_STATUS_CNT; ++i)
320 g_strlcpy(value.status[i], status[i], sizeof(value.status[i]));
321 g_strlcpy(value.cmdline, cmdline, sizeof(value.cmdline));
324 STC_LOGD("\033[1;34mFORK\033[0;m: tgid[\033[1;33m%d\033[0;m] ppid=[\033[1;35m%s\033[0;m] "
325 "cmdline[\033[0;34m%s\033[0;m] pid[%d]", tgid, status[PROC_STATUS_PPID], cmdline, pid);
327 __proc_tree_add(&key, &value);
331 static void __process_event_exec(int tgid, int pid)
333 char cmdline[PROC_NAME_MAX] = {0, };
334 char status[PROC_STATUS_CNT][PROC_BUF_MAX];
336 /* TODO: Add newly created thread to the process tasks */
340 memset(status, 0x0, sizeof(status));
342 if (STC_ERROR_NONE == proc_get_cmdline(pid, cmdline) &&
343 STC_ERROR_NONE == proc_get_status(pid, status)) {
345 if (__check_excn(cmdline)) {
347 STC_LOGD("[%s] monitoring is excepted", cmdline);
355 memset(&key, 0x0, sizeof(proc_key_s));
356 memset(&value, 0x0, sizeof(proc_value_s));
359 for (i = 0; i < PROC_STATUS_CNT; ++i)
360 g_strlcpy(value.status[i], status[i],
361 sizeof(value.status[i]));
362 g_strlcpy(value.cmdline, cmdline, sizeof(value.cmdline));
365 STC_LOGD("\033[1;32mEXEC\033[0;m: tgid[\033[1;33m%d\033[0;m] ppid=[\033[1;35m%s\033[0;m] "
366 "cmdline[\033[0;34m%s\033[0;m] pid[%d]", tgid, status[PROC_STATUS_PPID], cmdline, pid);
368 __proc_tree_add(&key, &value);
372 static void __process_event_exit(int tgid, int pid, int exit_code)
375 proc_value_s *lookup;
381 lookup = __proc_tree_lookup(&key);
382 if (lookup == NULL) /* unmonitored process */
386 STC_LOGD("\033[1;31mEXIT\033[0;m: tgid[\033[1;33m%d\033[0;m] "
387 "pid[%d] exitcode[\033[0;31m%d\033[0;m]", tgid, pid, exit_code);
389 __proc_tree_remove(&key);
392 static gboolean __process_nl_connector_message(GIOChannel *source,
393 GIOCondition condition,
397 int sock = g_io_channel_unix_get_fd(source);
398 nl_connector_proc_event_s msg;
400 if ((condition & G_IO_ERR) || (condition & G_IO_HUP) ||
401 (condition & G_IO_NVAL)) {
402 /* G_IO_ERR/G_IO_HUP/G_IO_NVAL received */
404 STC_LOGE("Netlink Connector socket received G_IO event, closing"
405 " socket. G_IO_ERR [%u], G_IO_HUP [%u], G_IO_NVAL [%u]",
406 (condition & G_IO_ERR), (condition & G_IO_HUP),
407 (condition & G_IO_NVAL));
408 __reopen_nl_connector_sock();
409 __STC_LOG_FUNC_EXIT__;
413 memset(&msg, 0, sizeof(nl_connector_proc_event_s));
415 ret = read(sock, &msg, sizeof(nl_connector_proc_event_s));
417 __STC_LOG_FUNC_EXIT__;
421 switch (msg.proc_ev.what) {
422 case PROC_EVENT_FORK:
423 __process_event_fork(msg.proc_ev.event_data.fork.child_tgid,
424 msg.proc_ev.event_data.fork.child_pid);
426 case PROC_EVENT_EXEC:
427 __process_event_exec(msg.proc_ev.event_data.exec.process_tgid,
428 msg.proc_ev.event_data.exec.process_pid);
430 case PROC_EVENT_EXIT:
431 __process_event_exit(msg.proc_ev.event_data.exit.process_tgid,
432 msg.proc_ev.event_data.exit.process_pid,
433 msg.proc_ev.event_data.exit.exit_code);
442 static int __subscribe_proc_events(void)
444 __STC_LOG_FUNC_ENTER__;
445 nl_connector_msg_s msg;
447 int sock = nl_connector_sock;
450 __STC_LOG_FUNC_EXIT__;
454 memset(&msg, 0, sizeof(nl_connector_msg_s));
456 msg.nl_hdr.nlmsg_len = sizeof(nl_connector_msg_s);
457 msg.nl_hdr.nlmsg_pid = getpid();
458 msg.nl_hdr.nlmsg_type = NLMSG_DONE;
460 msg.cn_msg.id.idx = CN_IDX_PROC;
461 msg.cn_msg.id.val = CN_VAL_PROC;
462 msg.cn_msg.len = sizeof(enum proc_cn_mcast_op);
464 msg.cn_mcast = PROC_CN_MCAST_LISTEN;
466 ret = send(sock, &msg, sizeof(nl_connector_msg_s), 0);
468 STC_LOGE("Error sending netlink connector message");
469 __STC_LOG_FUNC_EXIT__;
473 __STC_LOG_FUNC_EXIT__;
477 static int __unsubscribe_proc_events(void)
479 __STC_LOG_FUNC_ENTER__;
480 nl_connector_msg_s msg;
482 int sock = nl_connector_sock;
485 __STC_LOG_FUNC_EXIT__;
489 memset(&msg, 0, sizeof(nl_connector_msg_s));
491 msg.nl_hdr.nlmsg_len = sizeof(nl_connector_msg_s);
492 msg.nl_hdr.nlmsg_pid = getpid();
493 msg.nl_hdr.nlmsg_type = NLMSG_DONE;
495 msg.cn_msg.id.idx = CN_IDX_PROC;
496 msg.cn_msg.id.val = CN_VAL_PROC;
497 msg.cn_msg.len = sizeof(enum proc_cn_mcast_op);
499 msg.cn_mcast = PROC_CN_MCAST_IGNORE;
501 ret = send(sock, &msg, sizeof(nl_connector_msg_s), 0);
503 STC_LOGE("Error sending netlink connector message");
504 __STC_LOG_FUNC_EXIT__;
508 __STC_LOG_FUNC_EXIT__;
512 static bool __process_pid_cb(pid_t pid, void *user_data)
514 char cmdline[PROC_NAME_MAX] = {0, };
515 char status[PROC_STATUS_CNT][PROC_BUF_MAX];
517 memset(status, 0x0, sizeof(status));
519 if (STC_ERROR_NONE == proc_get_cmdline(pid, cmdline) &&
520 STC_ERROR_NONE == proc_get_status(pid, status)) {
522 if (__check_excn(cmdline))
529 memset(&key, 0x0, sizeof(proc_key_s));
530 memset(&value, 0x0, sizeof(proc_value_s));
533 for (i = 0; i < PROC_STATUS_CNT; ++i)
534 g_strlcpy(value.status[i], status[i], sizeof(value.status[i]));
535 g_strlcpy(value.cmdline, cmdline, sizeof(value.cmdline));
537 __proc_tree_add(&key, &value);
543 int stc_plugin_procfs_initialize(void)
545 __STC_LOG_FUNC_ENTER__;
547 proc_tree = g_tree_new_full(__proc_tree_key_compare, NULL,
548 __proc_tree_key_free,
549 __proc_tree_value_free);
551 /* TODO: Fill proc tree with current procfs state */
553 __open_nl_connector_sock();
554 __subscribe_proc_events();
555 __STC_LOG_FUNC_EXIT__;
556 return STC_ERROR_NONE;
559 int stc_plugin_procfs_deinitialize(void)
561 __STC_LOG_FUNC_ENTER__;
563 if (nl_connector_sock == -1) {
564 STC_LOGD("socket already closed");
565 return STC_ERROR_NONE;
568 __unsubscribe_proc_events();
569 __close_nl_connector_sock();
571 g_tree_destroy(proc_tree);
574 __STC_LOG_FUNC_EXIT__;
575 return STC_ERROR_NONE;
578 stc_error_e stc_plugin_procfs_load(void)
580 __STC_LOG_FUNC_ENTER__;
582 proc_foreach_pid(__process_pid_cb, NULL);
584 __STC_LOG_FUNC_EXIT__;
585 return STC_ERROR_NONE;
588 stc_error_e stc_plugin_procfs_status_changed(stc_cmd_type_e cmd, pid_t pid,
591 stc_app_type_e app_type)
593 stc_error_e ret = STC_ERROR_NONE;
595 if ((pkg_id && app_id) && STC_DEBUG_LOG)
596 STC_LOGD("cmd [%d] pkgid [%s] appid [%s] pid[%d] type [%d]",
597 cmd, pkg_id, app_id, pid, app_type);
600 case STC_CMD_SET_FOREGRD:
602 stc_app_key_s app_key;
603 stc_app_value_s app_value;
604 stc_process_key_s proc_key;
605 stc_process_value_s proc_value;
607 memset(&app_key, 0, sizeof(stc_app_key_s));
608 memset(&app_value, 0, sizeof(stc_app_value_s));
609 memset(&proc_key, 0, sizeof(stc_process_key_s));
610 memset(&proc_value, 0, sizeof(stc_process_value_s));
612 app_key.pkg_id = g_strdup(pkg_id);
613 app_key.app_id = g_strdup(app_id);
615 app_value.type = app_type;
616 app_value.processes = NULL;
620 proc_value.ground = STC_APP_STATE_FOREGROUND;
622 stc_monitor_application_add(app_key, app_value);
623 stc_monitor_process_add(app_key, proc_key, proc_value);
624 stc_monitor_process_update_ground(app_key, proc_key,
625 STC_APP_STATE_FOREGROUND);
627 FREE(app_key.pkg_id);
628 FREE(app_key.app_id);
631 case STC_CMD_SET_BACKGRD:
633 stc_app_key_s app_key;
634 stc_app_value_s app_value;
635 stc_process_key_s proc_key;
636 stc_process_value_s proc_value;
638 memset(&app_key, 0, sizeof(stc_app_key_s));
639 memset(&app_value, 0, sizeof(stc_app_value_s));
640 memset(&proc_key, 0, sizeof(stc_process_key_s));
641 memset(&proc_value, 0, sizeof(stc_process_value_s));
643 app_key.pkg_id = g_strdup(pkg_id);
644 app_key.app_id = g_strconcat(app_id, STC_BACKGROUND_APP_SUFFIX,
647 app_value.type = app_type;
648 app_value.processes = NULL;
652 proc_value.ground = STC_APP_STATE_BACKGROUND;
654 stc_monitor_application_add(app_key, app_value);
655 stc_monitor_process_add(app_key, proc_key, proc_value);
656 stc_monitor_process_update_ground(app_key, proc_key,
657 STC_APP_STATE_BACKGROUND);
659 FREE(app_key.pkg_id);
660 FREE(app_key.app_id);
663 case STC_CMD_SET_SERVICE_LAUNCHED:
665 stc_app_key_s app_key;
666 stc_app_value_s app_value;
667 stc_process_key_s proc_key;
668 stc_process_value_s proc_value;
670 memset(&app_key, 0, sizeof(stc_app_key_s));
671 memset(&app_value, 0, sizeof(stc_app_value_s));
672 memset(&proc_key, 0, sizeof(stc_process_key_s));
673 memset(&proc_value, 0, sizeof(stc_process_value_s));
675 app_key.pkg_id = g_strdup(pkg_id);
676 app_key.app_id = g_strconcat(app_id, STC_BACKGROUND_APP_SUFFIX,
679 app_value.type = app_type;
680 app_value.processes = NULL;
684 /* services will run always in background. */
685 proc_value.ground = STC_APP_STATE_BACKGROUND;
687 stc_monitor_application_add(app_key, app_value);
688 stc_monitor_process_add(app_key, proc_key, proc_value);
690 FREE(app_key.pkg_id);
691 g_free(app_key.app_id);
694 case STC_CMD_SET_TERMINATED:
696 stc_monitor_process_remove(pid);
700 STC_LOGE("Unhandled command");
701 ret = STC_ERROR_INVALID_PARAMETER;
707 API stc_plugin_procfs_s stc_plugin_procfs = {
709 stc_plugin_procfs_initialize,
710 .deinitialize_plugin =
711 stc_plugin_procfs_deinitialize,
713 stc_plugin_procfs_load,
714 .procfs_status_changed =
715 stc_plugin_procfs_status_changed