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✏️ Editing: cluserextselect.py

# -*- coding: utf-8 -*-

# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT

from __future__ import absolute_import
from __future__ import print_function
from __future__ import division
import os

from clcommon import clcagefs

from .clextselect import ClExtSelect
from .cluserselect import ClUserSelect
from .clselectexcept import ClSelectExcept
from .clselectprint import clprint
from .utils import apply_for_at_least_one_user
from .models import Website

try:
    from clcagefslib.webisolation.jail_utils import get_website_id
except ImportError:
    get_website_id = None

class ClUserExtSelect(ClUserSelect, ClExtSelect):
    USER_INI = 'alt_php.ini'

def __init__(self, item='php', exclude_pid_list=None):
        ClUserSelect.__init__(self, item, exclude_pid_list)
        self._alt_extensions = None
        self._user_extensions = []
        self._conflicts = []

def list_enabled_extensions(self, user, version=None, website=None):
        """
        Returns enabled user extensions for a version as a tuple
        @param user: string
        @param version: string
        @param website: Website or None - website info for per-domain configuration
        @return: tuple
        """
        self._check_user_in_cagefs(user)
        if version is None:
            version = self.get_version(user, domain=website.domain if website else None)[0]
        if version == 'native':
            raise ClSelectExcept.UnableToGetExtensions(version)
        return tuple(map((lambda i: (i, True)),
            sorted(self._get_enabled_extensions(user, version, website=website))))

def list_all_extensions(self, user, version=None, website=None):
        """
        Returns as a tuple all user extensions for a version,
        marking enabled and disabled ones
        @param user: string
        @param version: string
        @param website: Website or None - website info for per-domain configuration
        @return: tuple
        """
        self._check_user_in_cagefs(user)
        if version is None:
            version = self.get_version(user, domain=website.domain if website else None)[0]
        if version == 'native':
            raise ClSelectExcept.UnableToGetExtensions(version)
        user_extensions = set(self._get_enabled_extensions(user, version, website=website))
        builtin_extensions = set(self._get_builtins(version))
        php_d_all_extensions = set(self._get_all_extensions(version))
        all_extensions = builtin_extensions | php_d_all_extensions
        extensions = []
        for ext in sorted(all_extensions):
            enabled = False
            if ext in builtin_extensions:
                enabled = None
            elif ext in user_extensions:
                enabled = True
            extensions.append((ext, enabled))
        return tuple(extensions)

def _get_enabled_extensions(self, user, version, website=None):
        """
        Returns list of enabled user extensions
        @param user: string
        @param version: string
        @param website: Website or None - website info for per-domain configuration
        @return: list
        """
        if len(self._user_extensions) == 0:
            self._load_user_extensions(user, version, website=website)
        return self._user_extensions

def _get_all_extensions(self, version):
        """
        Returns list of all extensions for a version
        except compiled-in ones
        @param user: string
        @param version: string
        @return: list
        """
        if self._alt_extensions is None:
            self._alt_extensions = self._load_extensions_list(version)
        return self._alt_extensions

def _check_extensions(self, ext_list, version):
        """
        validation extensions name
        @param ext_list: list
        @param version: string
        """
        all_extensions = self._get_all_extensions(version)
        bad_extensions = set(ext_list).difference(set(all_extensions))
        if bad_extensions:
            raise ClSelectExcept.NoSuchExtension(ext_list=bad_extensions, all_extensions=all_extensions)

def bulk_enable_extensions(self, user, version, ext_list, check_ext=False, website=None):
        return self.bulk_handle_extensions(user, self.enable_extensions, version, ext_list, check_ext=check_ext, website=website)

def bulk_handle_extensions(self, user, func, *args, **kwargs):
        return apply_for_at_least_one_user(
            func,
            self._clpwd.get_names(self._clpwd.get_uid(user)),
            ClSelectExcept.UnableToSaveData,
            *args, **kwargs
        )

def enable_extensions(self, user: str, version: str, ext_list: list[str], check_ext: bool = False, website: Website | None = None) -> None:
        """
        Adds extensions to user php.ini
        """
        self._check_user_in_cagefs(user)
        if check_ext:
            self._check_extensions(ext_list=ext_list, version=version)
        user_ini_path = self._compose_user_ini_path(user, version, website=website)
        alt_path = self._compose_alt_path(version)

contents, extensions, extensions_data = self._load_ini_contents(user_ini_path)

resulting_extensions = list(extensions_data.keys()) + ext_list
        ext_list_without_conflicts = self._filter_out_conflicts(resulting_extensions)
        _conflicts_info = ClExtSelect.get_conflicts_info(resulting_extensions,
                                                         ext_list_without_conflicts)
        self._print_conflicts_info(_conflicts_info)

extensions = [ext for ext in extensions + ext_list
                      if ext in ext_list_without_conflicts]
        resolved_dependencies = []
        for extension in extensions:
            resolved = [ext for ext in self._include_dependencies([extension],
                                                                  alt_path,
                                                                  extensions_data)
                        if ext not in resolved_dependencies]
            dependence_info = ClExtSelect.get_dependencies_list(extension,
                                                                resolved,
                                                                ext_list)
            self._print_dependencies_info(dependence_info)
            resolved_dependencies.extend(resolved)

for ext in resolved_dependencies:
            contents.extend(
                self._smooth_data(extensions_data[ext]))

contents = self._move_ioncube_ext(contents)
        self._write_to_file(
            user, '\n'.join(contents)+'\n', user_ini_path)
        self._backup_settings(user)
        self._reload_processes(user)

def bulk_replace_extensions(self, user, version, ext_list, website=None):
        return self.bulk_handle_extensions(user, self.replace_extensions_with_dependenses, version, ext_list, website=website)

def replace_extensions(self, user: str, version: str, ext_list: list[str], website: Website | None = None) -> tuple[list[str], list[str], list[str]]:
        """
        (deprecated)
        Replaces extensions in user php.ini with supplied ones
        and print information about dependences and conflicts for old php selector
        """
        (extensions_list, dependencies_list, conflict_dependencies) = \
            self.bulk_replace_extensions(user, version, ext_list, website=website)
        self._print_dependencies_info(dependencies_list)
        self._print_conflicts_info(conflict_dependencies)

return extensions_list

def replace_extensions_with_dependenses(self, user: str, version: str, ext_list: list[str], website: Website | None = None) -> tuple[list[str], list[str], list[str]]:
        """
        Replaces extensions in user php.ini with supplied ones
        """
        self._check_user_in_cagefs(user)
        resolved_dependencies = []
        conflict_dependencies = []
        dependencies_list = []
        user_ini_path = self._compose_user_ini_path(user, version, website=website)
        alt_path = self._compose_alt_path(version)

contents, extensions, extensions_data = self._load_ini_contents(user_ini_path)
        extensions_data = {}    # we REPLACE extensions

ext_list_without_conflicts = self._filter_out_conflicts(ext_list)
        conflict_dependencies = ClExtSelect.get_conflicts_info(ext_list,
                                                               ext_list_without_conflicts)

extensions = [ext for ext in ext_list if ext in ext_list_without_conflicts]
        for extension in extensions:
            resolved = [ext for ext in self._include_dependencies([extension],
                                                                  alt_path,
                                                                  extensions_data)
                        if ext not in resolved_dependencies]
            dependencies_list = dependencies_list + self.get_dependencies_list(extension,
                                                                               resolved,
                                                                               ext_list)
            resolved_dependencies.extend(resolved)

for ext in resolved_dependencies:
            contents.extend(
                self._smooth_data(extensions_data[ext]))

def bulk_disable_extensions(self, user, version, ext_list, website=None):
        return self.bulk_handle_extensions(user, self.disable_extensions, version, ext_list, website=website)

def disable_extensions(self, user: str, version: str, ext_list: list[str], website: Website | None = None) -> None:
        """
        Removes extensions from user php.ini
        """
        self._check_user_in_cagefs(user)
        user_ini_path = self._compose_user_ini_path(user, version, website=website)
        alt_path = self._compose_alt_path(version)
        (contents, extensions,
            extensions_data) = self._load_ini_contents(user_ini_path)
        for item in set(ext_list):
            if item not in extensions_data:
                continue
            rest_of_set = set(extensions_data.keys()).difference([item])
            if (self._is_dependency(item, rest_of_set, alt_path)
                    and not rest_of_set.issubset(set(ext_list))):
                clprint.print_diag(
                    'text',
                    {'status': 'WARN',
                     'message': '%s left as dependency'
                     % (item,)})
                continue
            extensions_data.pop(item, None)
        for ext in extensions:
            if ext not in extensions_data:
                continue
            contents.extend(
                self._smooth_data(extensions_data[ext]))
        self._write_to_file(
            user, '\n'.join(contents)+'\n', user_ini_path)
        self._backup_settings(user)
        self._reload_processes(user)

def reset_extensions(self, user, version, website=None):
        """
        Replaces extensions in user php.ini with default ones
        @param user: string
        @param version: string
        @param website: Website or None - website info for per-domain configuration
        @return: list
        """
        if not version:
            raise ClSelectExcept.EmptyParam('Version')
        ext_list = ClExtSelect._get_enabled_extensions(self, version)
        # replace extensions already adapted for multiple users
        data = self.replace_extensions(user, version, ext_list, website=website)
        return data

def _move_ioncube_ext(contents):
        """
        PHP ioncube extensions must be at the beginning of extensions list
        @param contents: list
        @return: list
        """
        found = False
        fixed_contents = []
        stripped_contents = []
        for item in contents:
            if item.startswith(';---ioncube'):
                found = True
                fixed_contents.append(item)
                continue
            if found:
                if item.startswith(';---'):
                    found = False;
                else:
                    fixed_contents.append(item)
                    continue
            stripped_contents.append(item)
        fixed_contents.extend(stripped_contents)
        return fixed_contents
    _move_ioncube_ext = staticmethod(_move_ioncube_ext)

@staticmethod
    def _load_ini_contents(path):
        """
        Parses user ini file contents
        @param path: string
        @return: tuple
        """
        contents = []
        extensions = []
        extensions_data = {}
        is_content = False
        is_extension = False
        ext_name = None
        try:
            ini = open(path, 'r')
            for line in ini:
                line = line.rstrip()

# Check if it is content block (Custom PHP options)
                if line.startswith(';>==='):
                    is_extension = False
                    is_content = True
                    contents.append(line)

# Check if it is extension block
                elif line.startswith(';---'):
                    tmp_ext_name = line.strip(';- ')
                    if tmp_ext_name == "":
                        continue
                    ext_name = tmp_ext_name
                    is_extension = True
                    # Create the key-value pair
                    if ext_name not in extensions_data:
                        extensions_data[ext_name] = [line]

# Processing content
                elif is_content:
                    # Skip comments
                    if line.startswith(';') and not line.startswith(';<==='):
                        continue
                    # Append until the end of block ('<===')
                    contents.append(line)
                    if line.startswith(';<==='):
                        is_content = False

# Processing extensions
                elif ext_name and is_extension:
                    # Skip comments and empty lines
                    if line.startswith(';') or line == "":
                        continue
                    # Append extension data
                    if ext_name not in extensions:
                        extensions.append(ext_name)

if ext_name in extensions_data:
                        extensions_data[ext_name].append(line)
            ini.close()
        except (OSError, IOError):
            pass
        return contents, extensions, extensions_data

def _load_user_extensions(self, user: str, version: str, website: Website | None = None) -> None:
        """
        Loads user alternative extensions list for a version
        """
        user_ini_path = self._compose_user_ini_path(user, version, website=website)
        extensions = self._skim_over_extensions(user_ini_path)
        self._user_extensions.extend(extensions)

def _compose_user_ini_path(self, user: str, version: str, website: Website | None = None) -> str:
        """
        Composes user ini file path
        """
        if self.without_cagefs:
            # Per-domain configuration is only supported with CageFS
            if website:
                raise ClSelectExcept.MissingCagefsPackage()
            homedir = self._clpwd.get_homedir(user)
            php_dir = 'php%s' % version.replace('.', '')
            return homedir + '/.cl.selector/alt_' + php_dir + '.ini'

uid = str(self._clpwd.get_uid(user))
        user_prefix = '/' if clcagefs.in_cagefs() else os.path.join(self.CAGEFS_PATH, uid[-2:], user)

if website:
            # per-website configuration: .../{website_hash}/alt-php{version}/alt_php.ini
            if get_website_id is None:
                raise ClSelectExcept.MissingCagefsPackage()

website_hash = get_website_id(website.docroot)
            path = os.path.join(user_prefix,
                                'etc',
                                'cl.%s.d' % (self._item,),
                                website_hash,
                                'alt-%s%s' % (self._item, version.replace('.', '')),
                                self.USER_INI)
        else:
            path = os.path.join(user_prefix,
                                'etc',
                                'cl.%s.d' % (self._item,),
                                'alt-%s%s' % (self._item, version.replace('.', '')),
                                self.USER_INI)
        return path

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