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Edit File: vulnerabilities.py

"""
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.

This software is also available under ImunifyAV commercial license,
see <https://www.imunify360.com/legal/eula>
"""
from collections import defaultdict
from itertools import chain

from peewee import Case, fn

from defence360agent.contracts.messages import MessageType
from defence360agent.contracts.permissions import (
    MS_IMUNIFY_PATCH_ENABLED,
    has_permission,
)
from defence360agent.rpc_tools.lookup import (
    CommonEndpoints,
    RootEndpoints,
    bind,
)
from defence360agent.subsys.panels.hosting_panel import HostingPanel
from imav.contracts.imunify_patch_id import (
    get_imunify_patch_id,
    get_imunify_patch_purchase_url,
)
from imav.contracts.messages import RefreshImunifyPatchSubscription
from imav.contracts.permissions import is_imunify_patch_enabled
from imav.malwarelib.api.vulnerability import VulnerabilityAPI
from imav.malwarelib.config import VulnerabilityHitStatus
from imav.malwarelib.model import VulnerabilityHit
from imav.malwarelib.vulnerabilities.storage import restore_hits
from imav.malwarelib.utils import user_list

class VulnerabilitiesAdminEndpoints(RootEndpoints):
    @bind("vulnerabilities", "user", "list")
    async def vulnerabilities_user_list(
        self, offset, limit, user=None, search=None
    ):
        """
        Return list of users with summary vulnerabilities info
        """
        if user:
            # user endpoint
            _, users = await user_list.get_matched_users(match={user})
            max_count = len(users)
        elif search:
            # search
            _, users = await user_list.get_matched_users(match=search)
            max_count = len(users)
        else:
            # all users
            max_count, users = await user_list.get_matched_users(match=None)

users_list = sorted([u["user"] for u in users])
        vulnerable_case = Case(
            None,
            [((VulnerabilityHit.status != VulnerabilityHitStatus.PATCHED), 1)],
            0,
        )
        query = (
            VulnerabilityHit.select(
                VulnerabilityHit.user,
                fn.SUM(vulnerable_case).alias("vulnerable"),
            )
            .where(VulnerabilityHit.user.in_(users_list))
            .group_by(VulnerabilityHit.user)
        )
        users_vulnerabilities = {row.user: row.vulnerable for row in query}
        users_domains = await HostingPanel().get_domains_per_user()
        results = []
        for user in users_list:
            subscribed = is_imunify_patch_enabled(user)
            results.append(
                {
                    "username": user,
                    "domains": users_domains.get(user, []),
                    "vulnerable_file_count": users_vulnerabilities.get(
                        user, 0
                    ),
                    "imunify_patch_user_id": await get_imunify_patch_id(user),
                    "subscribed": subscribed,
                    "purchase_url": (
                        await get_imunify_patch_purchase_url(user)
                        if not subscribed
                        else None
                    ),
                }
            )
        start = offset
        end = offset + limit
        return max_count, results[start:end]

class VulnerabilitiesEndpoints(CommonEndpoints):
    @bind("vulnerabilities", "file", "list")
    async def vulnerabilities_file_list(self, user=None, **kwargs):
        """
        Return list vulnerable/patched files
        """
        await self._sink.process_message(RefreshImunifyPatchSubscription())
        max_count, hits = VulnerabilityHit.list(user=user, **kwargs)
        vuln_info = await VulnerabilityAPI.get_details(
            VulnerabilityHit.get_vulnerabilities_ids(hits)
        )
        results = []
        for hit in hits:
            username = hit["username"]
            subscribed = is_imunify_patch_enabled(username)
            record = {
                "id": hit["id"],
                "username": username,
                "file_path": hit["file_path"],
                "status": hit["status"],
                "app_name": "",
                "imunify_patch_user_id": await get_imunify_patch_id(username),
                "subscribed": subscribed,
                "purchase_url": (
                    await get_imunify_patch_purchase_url(username)
                    if not subscribed
                    else None
                ),
                "vulnerabilities": [],
            }
            for vuln_id in VulnerabilityHit.get_vulnerability_ids(hit["type"]):
                record["vulnerabilities"].append(
                    {
                        "cve_id": vuln_info[vuln_id]["cveId"],
                        "vulnerability_type": vuln_info[vuln_id]["type"],
                        "vulnerability_description": vuln_info[vuln_id][
                            "name"
                        ],
                    }
                )
                if not record["app_name"]:  # set it once
                    record["app_name"] = vuln_info[vuln_id]["app"]
            results.append(record)
        return max_count, results

@bind("vulnerabilities", "file", "patch")
    async def vulnerabilities_file_patch(self, paths, user=None):
        query = VulnerabilityHit.select().where(
            VulnerabilityHit.orig_file.in_(paths)
        )
        if user is not None:
            query = query.where(VulnerabilityHit.user == user)
        # make sure all associated users have patch permission
        user_paths = defaultdict(list)
        for vulnerability in query:
            user_paths[vulnerability.user].append(vulnerability.orig_file)
        for panel_user in user_paths.keys():
            _check_imunify_patch_permission(panel_user)
        if filelist := list(chain.from_iterable(user_paths.values())):
            await self._sink.process_message(
                MessageType.VulnerabilityPatchTask(
                    filelist=filelist, initiator=user, manual=True
                )
            )

@bind("vulnerabilities", "file", "revert")
    async def vulnerabilities_file_revert(self, paths, user=None):
        query = VulnerabilityHit.select().where(
            VulnerabilityHit.orig_file.in_(paths),
            VulnerabilityHit.status.in_([VulnerabilityHitStatus.PATCHED]),
        )
        if user is not None:
            query = query.where(VulnerabilityHit.user == user)
        hits = list(query)
        succeeded, failed = await restore_hits(hits)
        return {
            "succeeded": [hit.orig_file for hit in succeeded],
            "failed": [hit.orig_file for hit in failed],
        }

def _check_imunify_patch_permission(user: str | None) -> None:
    if not has_permission(MS_IMUNIFY_PATCH_ENABLED, user):
        raise PermissionError(
            "Unable to perform the command. "
            f"User '{user}' does not have required permissions.",
        )

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