server/src/CynaraService.cpp

   1 /*
   2  * Copyright (c) 2013 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   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
   7  *
   8  *        http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16
  17 #include <errno.h>
  18 #include <sys/types.h>
  19 #include <sys/stat.h>
  20 #if defined(USE_PTHREAD_WAITING)
  21 #include <sys/time.h>
  22 #endif
  23 #include <signal.h>
  24 #include <unistd.h>
  25 #include <fcntl.h>
  26 #include <memory>
  27 #include <thread>
  28 #include <cynara-monitor.h>
  29 #include "PrivacyGuardTypes.h"
  30 #include "Utils.h"
  31 #include "CynaraService.h"
  32 #include "PrivacyGuardDb.h"
  33 #include "PrivacyIdInfo.h"
  34
  35 #define BUF_SIZE 256
  36
  37 static cynara_monitor_configuration *p_conf;
  38 static cynara_monitor *p_cynara_monitor;
  39 static cynara_monitor_entry **monitor_entries;
  40 static bool exit_flag;
  41
  42 #if defined(USE_PTHREAD_WAITING)
  43 static pthread_cond_t g_condition;
  44 static pthread_mutex_t g_mutex;
  45 #endif
  46
  47 CynaraService::CynaraService(void)
  48         : m_signalToClose(-1)
  49         , m_cynaraThread(-1)
  50 {
  51 }
  52
  53 CynaraService::~CynaraService(void)
  54 {
  55 }
  56
  57 int
  58 CynaraService::initialize(void)
  59 {
  60         PG_LOGD("[cynara_service] CynaraService initializing");
  61
  62         int res = cynara_monitor_configuration_create(&p_conf);
  63         if(res != CYNARA_API_SUCCESS){
  64                 PG_LOGE("cynara_monitor_configuration_create() is failed.");
  65                 return PRIV_GUARD_ERROR_SYSTEM_ERROR;
  66         }
  67
  68         res = cynara_monitor_configuration_set_buffer_size(p_conf, CYNARA_BUFFER_SIZE);
  69         if(res != CYNARA_API_SUCCESS){
  70                 PG_LOGE("cynara_monitor_configuration_set_buffer_size() is failed.");
  71                 return PRIV_GUARD_ERROR_SYSTEM_ERROR;
  72         }
  73
  74         res = cynara_monitor_initialize(&p_cynara_monitor, p_conf);
  75         if(res != CYNARA_API_SUCCESS){
  76                 PG_LOGE("cynara_monitor_initialize() is failed.");
  77                 return PRIV_GUARD_ERROR_SYSTEM_ERROR;
  78         }
  79
  80 //      cynara_monitor_configuration_set_filter
  81
  82         PG_LOGI("CynaraService initialized");
  83
  84         return PRIV_GUARD_ERROR_SUCCESS;
  85 }
  86
  87 int
  88 CynaraService::start(void)
  89 {
  90         PG_LOGI("[cynara_service] CynaraService starting");
  91
  92         int res = 0;
  93         char buf[256];
  94
  95         sigset_t sigset;
  96         sigemptyset(&sigset);
  97         res = pthread_sigmask(SIG_BLOCK, &sigset, NULL);
  98         TryReturn( res >= 0, PRIV_GUARD_ERROR_SYSTEM_ERROR, , "pthread_sigmask : %s", strerror_r(errno, buf, sizeof(buf)));
  99
 100 #if defined(USE_PTHREAD_WAITING)
 101         pthread_mutex_init(&g_mutex, NULL);
 102         pthread_cond_init(&g_condition, NULL);
 103 #endif
 104
 105         pthread_t cynaraThread;
 106         PG_LOGD("starting new thread (getEntriesThread)");
 107         res = pthread_create(&cynaraThread, NULL, &getEntriesThread, this);
 108         TryReturn( res >= 0, PRIV_GUARD_ERROR_SYSTEM_ERROR, errno = res, "pthread_create : %s", strerror_r(errno, buf, sizeof(buf)));
 109         PG_LOGD("new thread (getEntriesThread) started");
 110
 111         m_cynaraThread = cynaraThread;
 112
 113         exit_flag = false;
 114
 115         PG_LOGD("CynaraService started");
 116
 117         return PRIV_GUARD_ERROR_SUCCESS;
 118 }
 119
 120 void*
 121 CynaraService::getEntriesThread(void* pData)
 122 {
 123         PG_LOGD("[cynara_service] Running get entries thread");
 124
 125         int res = -1;
 126
 127         pthread_detach(pthread_self());
 128
 129         while (exit_flag == false) {
 130                 if (monitor_entries) {
 131                         cynara_monitor_entries_free(monitor_entries);
 132                         monitor_entries = NULL;
 133                 }
 134
 135                 // returned when the cynara buffer is full or cynara_monitor_entries_flush() is called from another thread
 136                 res = cynara_monitor_entries_get(p_cynara_monitor, &monitor_entries);
 137                 if(res != CYNARA_API_SUCCESS){
 138                         PG_LOGE("cynara_monitor_entries_get() is failed. [%d]", res);
 139 #if defined(USE_PTHREAD_WAITING)
 140                         struct timeval now;
 141                         struct timespec ts;
 142                         gettimeofday(&now, NULL);
 143                         ts.tv_sec = now.tv_sec + 1;
 144                         ts.tv_nsec = now.tv_usec * 1000;
 145
 146                         pthread_mutex_lock(&g_mutex);
 147                         PG_LOGD("now waiting wakeup signal about 1 sec..");
 148                         pthread_cond_timedwait(&g_condition, &g_mutex, &ts);
 149                         PG_LOGD("ok, i'm wakeup..");
 150                         pthread_mutex_unlock(&g_mutex);
 151 #else
 152                         usleep(SLEEP_TIME * 20);        // 1 SEC
 153 #endif
 154                 } else {
 155                         if (monitor_entries) {
 156                                 res = CynaraService::updateDb(monitor_entries);
 157                                 if(res != PRIV_GUARD_ERROR_SUCCESS) {
 158                                         PG_LOGE("CynaraService::updateDb() is failed. [%d]", res);
 159                                 }
 160                         }
 161                 }
 162
 163                 if (monitor_entries) {
 164                         cynara_monitor_entries_free(monitor_entries);
 165                         monitor_entries = NULL;
 166                 }
 167         }
 168
 169         return (void*) PRIV_GUARD_ERROR_SUCCESS;
 170 }
 171
 172 int
 173 CynaraService::updateDb(cynara_monitor_entry **monitor_entries)
 174 {
 175         cynara_monitor_entry **entryIter = monitor_entries;
 176
 177         // DB update
 178         const char *user = NULL, *client = NULL, *privilege = NULL;
 179         const timespec *timestamp = NULL;
 180         int userId;
 181         std::string packageId, privacyId;
 182         time_t date;
 183         int res = -1;
 184
 185         while (*entryIter != nullptr) {
 186                 privilege = cynara_monitor_entry_get_privilege(*entryIter);
 187                 TryReturn(privilege != NULL, PRIV_GUARD_ERROR_SYSTEM_ERROR, , "Privilege Id in the entry is NULL");
 188
 189                 // change from privilege to privacy
 190                 res = PrivacyIdInfo::getPrivacyIdFromPrivilege(privilege, privacyId);
 191                 if (res != PRIV_GUARD_ERROR_NO_DATA) {
 192                         // User ID - string
 193                         user = cynara_monitor_entry_get_user(*entryIter);
 194                         TryReturn(user != NULL, PRIV_GUARD_ERROR_SYSTEM_ERROR, , "User Id in the entry is NULL");
 195
 196                         // Package ID - string
 197                         client = cynara_monitor_entry_get_client(*entryIter);
 198                         TryReturn(client != NULL, PRIV_GUARD_ERROR_SYSTEM_ERROR, , "Package Id in the entry is NULL");
 199
 200                         // timestamp
 201                         timestamp = cynara_monitor_entry_get_timestamp(*entryIter);
 202                         TryReturn(timestamp != NULL, PRIV_GUARD_ERROR_SYSTEM_ERROR, , "timestamp in the entry is NULL");
 203
 204                         // convert string to integer
 205                         userId = atoi(user);
 206
 207                         // check package ID
 208                         std::string tempPackageId = client;
 209                         PG_LOGD("Package ID from cynara: [%s]", client);
 210                         if (tempPackageId.substr(0, USER_APP_PREFIX_LEN).compare(USER_APP_PREFIX) == 0) {
 211                                 packageId = tempPackageId.substr(USER_APP_PREFIX_LEN, tempPackageId.length() - USER_APP_PREFIX_LEN);
 212                                 PG_LOGD("Fixed Package ID: [%s]", packageId.c_str());
 213                         } else {
 214                                 packageId = client;
 215                                 PG_LOGD("Fixed Package ID: [%s]", client);
 216                         }
 217
 218                         // datetime
 219                         date = timestamp->tv_sec;
 220
 221                         // add access log
 222                         int ret = PrivacyGuardDb::getInstance()->PgAddPrivacyAccessLogForCynara(userId, packageId, privacyId, date);
 223                         if(ret == PRIV_GUARD_ERROR_SUCCESS){
 224                                 PG_LOGD("Succeeded to add access log to DB. UserID:[%d], PackageID:[%s], Privacy:[%s]", userId, packageId.c_str(), privacyId.c_str());
 225                         }
 226                         else{
 227                                 PG_LOGE("Failed to add access log to DB. UserID:[%d], PackageID:[%s], Privacy:[%s]", userId, packageId.c_str(), privacyId.c_str());
 228                         }
 229                 }
 230                 ++entryIter;
 231         }
 232
 233         return PRIV_GUARD_ERROR_SUCCESS;
 234 }
 235
 236
 237 int
 238 CynaraService::stop(void)
 239 {
 240         char buf[BUF_SIZE];
 241         int ret;
 242
 243         // set thread exit condition
 244         exit_flag = true;
 245
 246         // [CYNARA] Flush Entries
 247         ret = cynara_monitor_entries_flush(p_cynara_monitor);
 248         if(ret != CYNARA_API_SUCCESS) {
 249                 if (ret == CYNARA_API_OPERATION_NOT_ALLOWED) {
 250                         PG_LOGD("There is no logs in the cynara buffer.");
 251                 } else {
 252                         PG_LOGE("cynara_monitor_entries_flush FAIL [%d]", ret);
 253                         return PRIV_GUARD_ERROR_SYSTEM_ERROR;
 254                 }
 255         }
 256
 257         if((ret = pthread_kill(m_cynaraThread, m_signalToClose)) < 0) {
 258                 PG_LOGE("pthread_kill(): %s", strerror_r(ret, buf, sizeof(buf)));
 259                 return PRIV_GUARD_ERROR_IPC_ERROR;
 260         }
 261         pthread_join(m_cynaraThread, NULL);
 262
 263 #if defined(USE_PTHREAD_WAITING)
 264         pthread_cond_destroy(&g_condition);
 265         pthread_mutex_destroy(&g_mutex);
 266 #endif
 267
 268         ret = cynara_monitor_finish(p_cynara_monitor);
 269         if(ret != CYNARA_API_SUCCESS) {
 270                 PG_LOGE("cynara_monitor_finish() is failed. [%d]", ret);
 271                 return PRIV_GUARD_ERROR_SYSTEM_ERROR;
 272         }
 273
 274         return PRIV_GUARD_ERROR_SUCCESS;
 275 }
 276
 277 int
 278 CynaraService::shutdown(void)
 279 {
 280         cynara_monitor_configuration_destroy(p_conf);
 281
 282         return PRIV_GUARD_ERROR_SUCCESS;
 283 }