init_service.h

/*
 * Copyright (c) 2020-2021 Huawei Device Co., Ltd.
 * 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.
 */
#ifndef BASE_STARTUP_INITLITE_SERVICE_H
#define BASE_STARTUP_INITLITE_SERVICE_H
#include <sys/types.h>

#include "cJSON.h"
#include "init_cmds.h"
#include "init_service_file.h"
#include "init_service_socket.h"
#ifdef WITH_SELINUX
#   include "init_selinux_param.h"
#endif // WITH_SELINUX
#include "list.h"
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif

// return value
#define SERVICE_FAILURE (-1)
#define SERVICE_SUCCESS 0

// service attributes
#define SERVICE_ATTR_INVALID 0x001      // option invalid
#define SERVICE_ATTR_ONCE 0x002         // do not restart when it exits
#define SERVICE_ATTR_NEED_RESTART 0x004 // will restart in the near future
#define SERVICE_ATTR_NEED_STOP 0x008    // will stop in reap
#define SERVICE_ATTR_IMPORTANT 0x010    // will reboot if it crash
#define SERVICE_ATTR_CRITICAL 0x020     // critical, will reboot if it crash 4 times in 4 minutes
#define SERVICE_ATTR_DISABLED 0x040     // disabled
#define SERVICE_ATTR_CONSOLE 0x080      // console
#define SERVICE_ATTR_DYNAMIC 0x100      // dynamic service
#define SERVICE_ATTR_ONDEMAND 0x200     // ondemand, manage socket by init

#define MAX_SERVICE_NAME 32
#define MAX_WRITEPID_FILES 100

#define FULL_CAP 0xFFFFFFFF
// init
#define DEFAULT_UMASK_INIT 022

#define CAP_NUM 2

#define SERVICES_ARR_NAME_IN_JSON "services"

typedef struct {
    uid_t uID;
    gid_t *gIDArray;
    int gIDCnt;
    unsigned int *caps;
    unsigned int capsCnt;
} Perms;

typedef struct {
    int count;
    char **argv;
} ServiceArgs;

typedef struct {
    ListNode node;
    char name[MAX_SERVICE_NAME + 1];
#ifdef WITH_SELINUX
    char secon[MAX_SECON_LEN];
#endif // WITH_SELINUX
    int pid;
    int crashCnt;
    time_t firstCrashTime;
    int crashCount;
    int crashTime;
    unsigned int attribute;
    int importance;
    Perms servPerm;
    ServiceArgs pathArgs;
    ServiceArgs writePidArgs;
    CmdLines *restartArg;
    ServiceSocket *socketCfg;
    ServiceFile *fileCfg;
} Service;

int ServiceStart(Service *service);
int ServiceStop(Service *service);
void ServiceReap(Service *service);
void ReapService(Service *service);

void NotifyServiceChange(const char *serviceName, const char *change);
int IsForbidden(const char *fieldStr);
int SetImportantValue(Service *curServ, const char *attrName, int value, int flag);
int GetServiceCaps(const cJSON *curArrItem, Service *curServ);
int ServiceExec(const Service *service);

#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif

#endif // BASE_STARTUP_INITLITE_SERVICE_H