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Edit: report_generator.py

# -*- coding: utf-8 -*-
#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2021 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT

from __future__ import absolute_import

import os
import sys
import time
import fcntl
import json
from psutil import pid_exists
from typing import Optional, Dict, Union, List, Tuple
from secureio import write_file_via_tempfile, disable_quota

from clwpos.data_collector_utils import _add_wp_path_info
from clcommon.clpwd import ClPwd, drop_privileges

from clwpos.feature_suites.configurations import FeatureStatusEnum, extract_suites
from clwpos.utils import acquire_lock, get_server_wide_options
from clcommon.cpapi import userdomains, cpusers
from clwpos.feature_suites import (
    get_admin_suites_config,
    extract_features,
    AWPSuite,
    PremiumSuite,
    CDNSuite,
    CDNSuitePro,
)
from clwpos.user.config import UserConfig
from clwpos.logsetup import setup_logging
from clwpos.cl_wpos_exceptions import WposError
from clwpos import gettext as _

from clwpos.constants import SCANNING_STATUS, LAST_SCANNED_TS, SCAN_CACHE

logger = setup_logging(__name__)

class ReportGeneratorError(WposError):
    """
    Raised when some bad happened during report generating/getting
    """

pass

class ScanStatus:
    """
    Type for handly scan status manipulations
    """

def __init__(self, status, pid: Optional[int] = None):
        self.pid = pid
        try:
            if isinstance(status, str):
                self.current, self.total = map(int, status.split('/'))
            elif isinstance(status, tuple):
                self.current, self.total = map(int, status)
            else:
                raise ReportGeneratorError(
                    message=_('Unable to parse scan status: %(status)s, type of: %(type)s'),
                    context={'status': str(status), 'type': type(status)},
                )
        except ValueError:
            raise ReportGeneratorError(
                message=_('Unable to parse scan status: %(status)s'),
                context={'status': str(status)},
            )

def __hash__(self):
        return hash((self.current, self.total))

def __eq__(self, other):
        if isinstance(other, ScanStatus):
            return self.current, self.total == other.current, other.total
        elif isinstance(other, str):
            return str(self) == other.strip()
        elif isinstance(other, tuple):
            return tuple(self) == other
        return False

def __str__(self):
        return f'{self.current}/{self.total}'

def __iter__(self):
        for i in self.current, self.total:
            yield i

@staticmethod
    def read() -> Optional['ScanStatus']:
        """
        Read status file, with shared blocking flock
        """
        st = None
        if os.path.exists(SCANNING_STATUS):
            with open(SCANNING_STATUS, 'r') as f:
                fcntl.flock(f.fileno(), fcntl.LOCK_SH)
                data = f.read()
                fcntl.flock(f.fileno(), fcntl.LOCK_UN)

# status file was created, but not written with data yet
                if not data:
                    return st

try:
                    data = json.loads(data)
                    pid = data.get('pid')
                    st = ScanStatus(
                        (data['current'], data['total']),
                        int(pid) if pid else None,
                    )
                except Exception as e:
                    logger.error('Can\'t parse scan status json: %s', e)
        return st

def to_json(self) -> str:
        """
        Status JSON representation to write
        """
        return json.dumps(
            {
                'current': self.current,
                'total': self.total,
                'pid': self.pid,
            }
        )

def check_pid(self) -> bool:
        """
        Return True if scan process is still alive
        """
        return bool(self.pid) and pid_exists(self.pid)

class ReportGenerator:
    """
    Class for admin report generation/getting
    """

def __init__(self):
        self._clpwd = ClPwd()
        self.status = ScanStatus((0, 0))
        self.result = {
            'version': '1',
            'users': {},
        }
        self.scan_status_fd = None
        self.logger = logger

@staticmethod
    def is_scan_running() -> bool:
        """
        Checks:
            1) SCANNING_STATUS file exists
            2) SCANNING_STATUS has the scan process pid and it is still alive
        """
        status = ScanStatus.read()
        if status:
            if status.check_pid():
                return True
        return False

@staticmethod
    def get_scan_status() -> Optional[ScanStatus]:
        """
        Read status file and get status
        """
        return ScanStatus.read()

def scan(self, user_list: Optional[List[str]] = None) -> Dict[str, int]:
        """
        Public entry point for the scan procedure
        Do some checks, prepare users list, fork process to actually do scan, and return initial scan progress

`user_list` - users to scan; if None - scan all
        """
        if self.is_scan_running():
            raise ReportGeneratorError(
                message=_('Another scan in progress: %(status)s'), context={'status': str(self.get_scan_status())}
            )

usernames = self.__get_usernames()
        self.logger.debug('Found usernames: %s', usernames)
        if user_list:
            usernames = self.__filter_usernames(user_list, usernames)
            self.logger.debug('Filtered usernames: %s', usernames)
        self.status.total = len(usernames)

# fork the scan to another process and return initial status immediately
        fp = os.fork()
        if fp:
            # Hold the caller's cron flock across the fork->claim gap: wait
            # (bounded) until the child has written SCANNING_STATUS so
            # is_scan_running() is True before we return. Otherwise a concurrent
            # generate-report could pass the guard in that window and start an
            # overlapping scan (the flock is released as soon as we return, now
            # that the child detaches the inherited stdio).
            self._await_scan_claim(fp)
            self.logger.debug('Scan forked to: %d', fp)
            return {'total_users_scanned': 0, 'total_users_to_scan': self.status.total}
        else:
            # Detach the long-running scan child from any stdout/stderr the caller
            # inherited to us (e.g. clwposcron's Popen pipe). Otherwise the caller's
            # communicate() would not see EOF until this whole tenant-docroot walk
            # finishes, wedging the flock-guarded cron. Own log file is unaffected.
            self._detach_inherited_stdio()
            try:
                self._scan(usernames)
                sys.exit(0)
            except Exception as e:
                self.logger.exception('Error during user sites scan: %s', e)
                sys.exit(1)

def _await_scan_claim(self, child_pid: int, timeout: float = 5.0) -> None:
        """
        Block until the forked scan child has claimed the scan (written
        SCANNING_STATUS with its live pid, so is_scan_running() is True), or
        until the child is gone or a short timeout elapses. Called by the parent
        before it returns, so the caller's cron flock is not released until the
        single-scan guard is armed. Bounded, so a wedged child can never hang the
        caller; only the claim is awaited, never the scan itself.
        """
        deadline = time.monotonic() + timeout
        while time.monotonic() < deadline:
            if self.is_scan_running():
                return
            try:
                # Reap with WNOHANG rather than poll pid_exists(): a child that
                # crashed before claiming stays a zombie (we are its parent and
                # nothing else waits on it), and pid_exists() is True for
                # zombies -- so the old check would burn the whole timeout
                # while the caller's cron flock is held.
                reaped_pid, _ = os.waitpid(child_pid, os.WNOHANG)
            except ChildProcessError:
                # Already reaped elsewhere: the child is gone either way.
                return
            if reaped_pid == child_pid:
                # Child exited/crashed before claiming: nothing to guard.
                return
            time.sleep(0.02)

def _detach_inherited_stdio(self) -> None:
        """
        Executes in the forked scan child. Start a new session and redirect
        stdout/stderr to /dev/null so inherited pipe write-ends are released
        and the parent that forked us can be reaped independently of this scan.
        """
        try:
            os.setsid()
            devnull_fd = os.open(os.devnull, os.O_WRONLY)
            os.dup2(devnull_fd, 1)
            os.dup2(devnull_fd, 2)
            if devnull_fd > 2:
                os.close(devnull_fd)
        except OSError as e:
            self.logger.exception('Failed to detach forked scan child stdio: %s', e)

def _scan(self, usernames: List[str]) -> None:
        """
        Executes in forked process
        Get domain and docroots list for usernames
        Count user sites, write to SCAN_CACHE
        Create and remove SCANNING_STATUS file

`userdomains` examples:
            [{'domain': 'res1.com', 'docroot': '/home/res1/public_html'}],
            [{'domain': 'cltest1.com', 'docroot': '/home/cltest1/public_html'},
                {'domain': 'mk.cltest1.com', 'docroot': '/home/cltest1/public_html/mk'}]
        """
        self.scan_status_fd = open(SCANNING_STATUS, 'w')
        self.status.pid = os.getpid()
        self.logger.debug('Set status pid to: %d', self.status.pid)
        # Claim the scan up-front, before the per-user loop, so a parent waiting
        # in _await_scan_claim() -- and any concurrent generate-report -- observe
        # is_scan_running() as True as early as possible (closes the overlap gap).
        self.__update_scan_status()
        for username in usernames:
            user_data = {}
            self.status.current += 1
            self.__update_scan_status()
            for domain_name, doc_root in userdomains(username):
                user_data.setdefault(doc_root, []).append(domain_name)
            with drop_privileges(username):
                user_data = _add_wp_path_info(user_data)
            # set-comprehension and rstrip() used to delete duplicated paths in case of subdomains
            # ex: {'/dr1': {'wp_paths': ['', 'wordpress', 'sub']}, '/dr1/sub': {'wp_paths': ['']}}
            wp_paths = {
                os.path.join(_doc_root, _wp_path).rstrip('/')
                for _doc_root, values in user_data.items()
                for _wp_path in values.get('wp_paths', [])
            }
            self.result['users'].update(
                {
                    username: {'wp_sites_count': len(wp_paths)},
                }
            )
        self.__write_scan_result()
        self.scan_status_fd.close()
        os.unlink(SCANNING_STATUS)
        _ts = self.__update_scan_timestamp()
        self.logger.debug('New scan timestamp: %d', _ts)

def get_status(self) -> dict:
        """
        CLI command to get scan status
        Cases:
            1) no previous scans
            2) scan in progress
            3) scan finished (success)
            4) scan process crashed
        """
        result = {
            'scan_status': 'idle',
            'total_users_scanned': 0,
            'total_users_to_scan': None,
            'last_scan_time': None,
        }
        if not os.path.exists(SCAN_CACHE):
            result.update({'total_users_to_scan': len(cpusers())})
            return result

if self.is_scan_running():
            status = self.get_scan_status()
            result.update(
                {
                    'scan_status': 'in_progress',
                    'total_users_scanned': status.current,
                    'total_users_to_scan': status.total,
                }
            )
        else:
            if not os.path.exists(SCANNING_STATUS):
                result.update(
                    {
                        'total_users_to_scan': len(cpusers()),
                        'last_scan_time': self._get_scan_timestamp(),
                    }
                )
            else:
                result.update(
                    {
                        'scan_status': 'error',
                        'scan_error': _('Failed to generate report'),
                        'total_users_to_scan': len(cpusers()),
                        'last_scan_time': self._get_scan_timestamp(),
                    }
                )
                # Only reap a status file that actually holds a record. An empty
                # one means a scan has just created it (_scan opens with 'w')
                # and has not written its claim yet: unlinking it there would
                # strand the child on an unlinked inode, so _await_scan_claim
                # would never observe the claim, would time out and release the
                # caller's cron flock - reopening the overlapping-scan window.
                try:
                    has_record = os.path.getsize(SCANNING_STATUS) > 0
                except OSError:
                    has_record = False
                if has_record:
                    os.unlink(SCANNING_STATUS)
        return result

@staticmethod
    def _get_scan_timestamp() -> Optional[int]:
        """
        Read timestamp from LAST_SCANNED_TS
        Returns None in case of any error
        """
        try:
            with open(LAST_SCANNED_TS, 'rt') as f:
                t = f.read().strip()
                return int(t)
        except Exception as e:
            logger.error('Can\'t read last scan timestamp: %s', e)
        return None

@staticmethod
    def __filter_usernames(to_scan, usernames: List[str]) -> List[str]:
        """
        Return usernames from --users cli argument
        """
        return list(filter(lambda x: x in to_scan, usernames))

@staticmethod
    def __get_usernames() -> List[str]:
        """
        Get usernames from cpapi
        """
        return list(cpusers())

@staticmethod
    def __update_scan_timestamp() -> int:
        """
        Write current timestamp to LAST_SCANNED_TS
        Return timestamp for the later use, if needed
        """
        ts = int(time.time())
        write_file_via_tempfile(str(ts), LAST_SCANNED_TS, 0o600)
        return ts

def __update_scan_status(self) -> None:
        """
        Write current status to SCANNING_STATUS
        Data example: "0/10", without any other symbols
        """
        f = self.scan_status_fd  # type: TextIO
        f_no = f.fileno()
        f.seek(0)
        # Blocking LOCK_EX: readers (ScanStatus.read holds LOCK_SH, polled every
        # 20ms by _await_scan_claim and by any get-scan-status caller) only hold
        # the lock for a microseconds-long read, so waiting is bounded in
        # practice. LOCK_NB here would raise BlockingIOError on any overlap with
        # a reader and kill the whole scan child.
        fcntl.flock(f_no, fcntl.LOCK_EX)
        f.write(self.status.to_json())
        f.flush()
        # Truncate to what we just wrote: rewriting from offset 0 without this
        # leaves the tail of a longer previous record behind, so ScanStatus.read()
        # gets trailing bytes, json.loads raises, read() returns None and the
        # single-scan guard silently disappears.
        f.truncate()
        fcntl.flock(f_no, fcntl.LOCK_UN)

def __write_scan_result(self) -> None:
        """
        Write final scan result to SCANNING_STATUS via temp file
        """
        write_file_via_tempfile(json.dumps(self.result), SCAN_CACHE, 0o600)

# get-report part
    def get(self, target_users=None):
        """
         1. get-report when there is no cache file:
          - start generating report
          - return total_users_scanned, total_users_to_scan keys
        2. get-report when there is no cache file, but scanning
           in progress:
           - return total_users_scanned, total_users_to_scan keys
        3. get-report when cache present, no scanning running
          - return data from cache
          - no keys total_users_scanned, total_users_to_scan in response
        4. get-report when cache present, scanning is running
          - return data from cache
          - return total_users_scanned, total_users_to_scan keys
        """
        report = {}
        scanned_cache = self._get_from_file_with_locking(SCAN_CACHE, is_json=True)
        scanning_status = self.get_scan_status()

# no cache and scanning is not running right now ->
        # run scanning
        if not scanned_cache and not scanning_status:
            scan = self.scan()
            return scan

# no cache, but scanning is running right now ->
        # returns status from status file
        if scanning_status:
            report['total_users_scanned'] = scanning_status.current
            report['total_users_to_scan'] = scanning_status.total

# if scanned cache -> append it to report
        if scanned_cache:
            report['last_scan_time'] = self._get_scan_timestamp()

# cache already generated, let`s read it
            users_cache = scanned_cache['users']
            (
                report['users'],
                report['total_wordpress_count'],
                report['total_users_count'],
                total_users_with_active_awp,
                total_users_with_active_premium,
                total_users_with_active_cdn,
                total_users_with_active_cdn_pro,
                total_sites_with_active_awp,
                total_sites_with_active_premium,
                total_sites_with_active_cdn,
                total_sites_with_active_cdn_pro,
            ) = self._get_users_report(users_cache, target_users)

report['total_users_count_active'] = {
                AWPSuite.name: total_users_with_active_awp,
                PremiumSuite.name: total_users_with_active_premium,
                CDNSuite.name: total_users_with_active_cdn,
                CDNSuitePro.name: total_users_with_active_cdn_pro,
            }
            report['total_sites_count_active'] = {
                AWPSuite.name: total_sites_with_active_awp,
                PremiumSuite.name: total_sites_with_active_premium,
                CDNSuite.name: total_sites_with_active_cdn,
                CDNSuitePro.name: total_sites_with_active_cdn_pro,
            }
        return report

@staticmethod
    def _is_allowed_suite(user_suites_data, user_features_data, suite):
        is_suite_allowed = user_suites_data.get(suite.name).status == FeatureStatusEnum.ALLOWED
        return is_suite_allowed and any(
            [
                user_features_data.get(feature.NAME.lower())
                and user_features_data.get(feature.NAME.lower()).status == FeatureStatusEnum.ALLOWED
                for feature in suite.features
            ]
        )

@staticmethod
    def _sites_with_active_features(username):
        with drop_privileges(username), disable_quota():
            wps_with_enabled_awp_features = UserConfig(username).wp_paths_with_active_suite_features(AWPSuite.features)
            wps_with_enabled_awp_premium_features = UserConfig(username).wp_paths_with_active_suite_features(
                PremiumSuite.features
            )
            wps_with_enabled_cdn_features = UserConfig(username).wp_paths_with_active_suite_features(CDNSuite.primary)
        return wps_with_enabled_awp_features, wps_with_enabled_awp_premium_features, wps_with_enabled_cdn_features

def _get_users_report(
        self, user_scanned_data: Dict, target_users: Union[None, List]
    ) -> Tuple[List, int, int, int, int, int, int, int, int, int, int]:
        """
        Returns list of final users data:
        example:
        [
        {"username": "user1", "features": {"object_cache": true}, "wp_sites_count": "1"},
        ....
        ]

"""
        all_users_info = []
        total_wp_sites_count, total_users_count = 0, 0
        total_users_with_active_awp = 0
        total_users_with_active_premium = 0
        total_users_with_active_cdn = 0
        total_users_with_active_cdn_pro = 0

total_sites_with_active_awp = 0
        total_sites_with_active_premium = 0
        total_sites_with_active_cdn = 0
        total_sites_with_active_cdn_pro = 0

default_config = get_server_wide_options()

for username, scanned_data in user_scanned_data.items():
            wps_per_user_with_enabled_awp_features = 0
            wps_per_user_with_enabled_awp_premium_features = 0
            wps_per_user_with_enabled_cdn = 0
            wps_per_user_with_enabled_cdn_pro = 0

if target_users and username not in target_users:
                continue
            uid = self._uid_by_name(username)
            if not uid:
                self.logger.warning('Cannot get user %s uid', username)
                continue

# let`s not break report collection for all users
            try:
                user_features_data = extract_features(
                    uid, get_admin_suites_config(uid), server_wide_options=default_config
                )
                user_suites_data = extract_suites(get_admin_suites_config(uid), server_wide_options=default_config)
            except Exception:
                self.logger.exception('Unable to get features data from admin config')
                user_suites_data = {}
                user_features_data = {}

# broken users must not fail whole report
            try:
                wps_with_enabled_awp_features, wps_with_enabled_awp_premium_features, wps_with_enabled_cdn_features = (
                    self._sites_with_active_features(username)
                )
            except Exception as e:
                self.logger.warning('Unable to get information for report from user config: %s', str(e))
                wps_with_enabled_awp_features, wps_with_enabled_awp_premium_features, wps_with_enabled_cdn_features = (
                    [],
                    [],
                    [],
                )

total_users_count += 1
            total_wp_sites_count += int(scanned_data['wp_sites_count'])

# if feature is allowed and activated by end-user
            if self._is_allowed_suite(user_suites_data, user_features_data, AWPSuite) and wps_with_enabled_awp_features:
                total_users_with_active_awp += 1
                total_sites_with_active_awp += len(wps_with_enabled_awp_features)
                wps_per_user_with_enabled_awp_features = len(wps_with_enabled_awp_features)

if (
                self._is_allowed_suite(user_suites_data, user_features_data, PremiumSuite)
                and wps_with_enabled_awp_premium_features
            ):
                total_users_with_active_premium += 1
                total_sites_with_active_premium += len(wps_with_enabled_awp_premium_features)
                wps_per_user_with_enabled_awp_premium_features = len(wps_with_enabled_awp_premium_features)

if wps_with_enabled_cdn_features:
                if self._is_allowed_suite(user_suites_data, user_features_data, CDNSuitePro):
                    total_users_with_active_cdn_pro += 1
                    total_sites_with_active_cdn_pro += len(wps_with_enabled_cdn_features)
                    wps_per_user_with_enabled_cdn_pro = len(wps_with_enabled_cdn_features)
                elif self._is_allowed_suite(user_suites_data, user_features_data, CDNSuite):
                    total_users_with_active_cdn += 1
                    total_sites_with_active_cdn += len(wps_with_enabled_cdn_features)
                    wps_per_user_with_enabled_cdn = len(wps_with_enabled_cdn_features)

all_users_info.append(
                {
                    'username': username,
                    'suites': user_suites_data,
                    'wp_sites_count': scanned_data['wp_sites_count'],
                    'accelerate_wp_active_sites_count': wps_per_user_with_enabled_awp_features,
                    'accelerate_wp_premium_sites_count': wps_per_user_with_enabled_awp_premium_features,
                    'accelerate_wp_cdn_sites_count': wps_per_user_with_enabled_cdn,
                    'accelerate_wp_cdn_pro_sites_count': wps_per_user_with_enabled_cdn_pro,
                }
            )

# stop iterating through users if targets already found
            if target_users and len(target_users) == len(all_users_info):
                break

return (
            all_users_info,
            total_wp_sites_count,
            total_users_count,
            total_users_with_active_awp,
            total_users_with_active_premium,
            total_users_with_active_cdn,
            total_users_with_active_cdn_pro,
            total_sites_with_active_awp,
            total_sites_with_active_premium,
            total_sites_with_active_cdn,
            total_sites_with_active_cdn_pro,
        )

def _get_from_file_with_locking(self, path: str, is_json: bool, with_lock: bool = False) -> Union[Dict, str, None]:
        """
        Reads file with locking if needed
        """
        if not os.path.exists(path):
            return None
        try:
            if with_lock:
                with acquire_lock(path):
                    return self._read_report_file(path, is_json)
            else:
                return self._read_report_file(path, is_json)
        except Exception as e:
            raise ReportGeneratorError(
                message=_('Can`t read %(file)s. Reason: %(error)s'), context={'file': path, 'error': str(e)}
            )

@staticmethod
    def _read_report_file(path: str, is_json: bool) -> Union[Dict, str, None]:
        """
        Reads file for report
        """
        with open(path, "r") as file:
            if is_json:
                return json.load(file)
            else:
                return file.read().strip()

def _uid_by_name(self, name):
        try:
            return self._clpwd.get_uid(name)
        except ClPwd.NoSuchUserException:
            return None

📁 ＳＫＹＳＨＥＬＬ ＭＡＮＡＧＥＲ PHP v8.1.34

Edit: report_generator.py

📁 ＳＫＹＳＨＥＬＬＭＡＮＡＧＥＲ PHP v8.1.34