wehub-resource-sync
416 lines
16 KiB
Python
416 lines
16 KiB
Python
# Copyright 2026 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import re
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import secrets
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from pathlib import Path
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from google.adk.tools import ToolContext
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from app.state_schema import ComplianceStep
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# Bounded directories configuration for security path traversal check
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# Local checkout root is two levels above python-extraction-agent/app. In the
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# Docker image, only python-extraction-agent is copied, so fall back to /app.
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_APP_DIR = Path(__file__).resolve().parent
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_PYTHON_PROJECT_DIR = _APP_DIR.parent
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_LOCAL_REPO_ROOT = _PYTHON_PROJECT_DIR.parent
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SANDBOX_DIR = str(
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_LOCAL_REPO_ROOT
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if (_LOCAL_REPO_ROOT / "sample-contracts").exists()
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else _PYTHON_PROJECT_DIR
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)
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UPLOAD_DIR = os.path.join(SANDBOX_DIR, "uploads")
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def _secure_resolve_path(filename: str) -> str:
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"""Security Boundary Resolver (enforces path limits to prevent directory traversals).
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Rule 8 Enforcement: Sanitizes inputs and resolved target boundaries.
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"""
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# Active detection blocks (fail-close on traversal vectors)
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if ".." in filename or "\\" in filename or (filename.startswith("/") and not filename.startswith(UPLOAD_DIR)):
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raise PermissionError("Access Denied: Path traversal attack detected.")
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safe_filename = os.path.basename(filename)
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target_path = os.path.join(UPLOAD_DIR, safe_filename)
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# Fully resolve absolute boundary paths
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absolute_root = os.path.abspath(UPLOAD_DIR) + os.path.sep
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absolute_target = os.path.abspath(target_path)
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if not absolute_target.startswith(absolute_root):
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raise PermissionError("Access Denied: Path traversal attack detected.")
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return absolute_target
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# Mock texts mapping for reliable local demo processing
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MOCK_CONTRACT_TEXTS = {
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"standard-vendor-agreement.pdf": """
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SOFTWARE SERVICES VENDOR AGREEMENT
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PARTIES:
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This Agreement is entered into by and between ACME CLOUD SOLUTIONS ("Contractor") and GFD PLATFORM SYSTEMS ("Client").
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VALUE & SERVICES:
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Client agrees to pay Contractor a total consideration of $250,000.00 (Two Hundred and Fifty Thousand Dollars) for the performance of the cloud architectural services.
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TERM & COMMENCEMENT:
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This Agreement shall commence on June 1, 2026, and shall continue in full force and effect until June 1, 2028 (a duration of exactly 2 years), unless terminated earlier in accordance with the terms herein.
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LIMITATION OF LIABILITY:
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Except for breach of confidentiality obligations, each party's maximum aggregate liability to the other party under this Agreement shall be strictly capped and limited to $1,000,000.00 (One Million Dollars). Under no circumstances shall either party be liable for indirect or consequential damages.
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INSURANCE:
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Contractor shall maintain Commercial General Liability insurance during the term of this agreement with a minimum coverage limit of $2,000,000.00.
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TERMINATION:
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Either party may terminate this agreement upon 30 days prior written notice.
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""",
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"high-risk-liability-contract.pdf": """
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ENTERPRISE CLOUD CONSULTING AGREEMENT
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PARTIES:
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This Agreement is entered into by and between APEX DATA SYSTEMS ("Contractor") and GFD PLATFORM SYSTEMS ("Client").
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VALUE & SERVICES:
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Client agrees to pay Contractor a total fee of $450,000.00 for enterprise data engineering services.
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TERM & COMMENCEMENT:
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This Agreement shall commence on June 1, 2026, and terminate on June 1, 2027 (1 year duration).
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LIMITATION OF LIABILITY:
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LIABILITY LIMITS ARE EXPLICITLY WAIVED. CONTRACTOR LIABILITY SHALL BE UNLIMITED UNDER ALL CIRCUMSTANCES. GFD PLATFORM SYSTEMS ASSUMES FULL COMPENSATORY RESPONSIBILITY FOR ALL THIRD-PARTY CLAIMS ARISEN OUT OF PERFORMANCE ACTIONS.
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INSURANCE:
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Contractor shall maintain standard professional liability insurance with minimum coverage of $1,500,000.00.
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TERMINATION:
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Termination requires 30 days notice.
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""",
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"non-compliant-contract.pdf": """
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LEGACY SYSTEMS INTEGRATION SERVICES CHARTER
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PARTIES:
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This Agreement is entered into by and between LEGACY NETWORKS CORP ("Contractor") and GFD PLATFORM SYSTEMS ("Client").
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VALUE & SERVICES:
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Client agrees to pay Contractor a sum of $850,000.00 (Eight Hundred and Fifty Thousand Dollars) for legacy migration activities.
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TERM & COMMENCEMENT:
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This Charter shall commence on June 1, 2026, and extend until June 1, 2032 (a total term of exactly 6 years).
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LIMITATION OF LIABILITY:
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THE PARTIES EXPRESSLY AGREE THAT ALL CONTRACTOR RESPONSIBILITY LIMITS ARE INAPPLICABLE. CONTRACTOR'S TOTAL LIABILITY UNDER THIS CONTRACT SHALL BE ENTIRELY UNLIMITED.
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INSURANCE:
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Contractor shall maintain general liability protection limits of $500,000.00.
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TERMINATION:
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THIS AGREEMENT SHALL AUTOMATICALLY RENEW FOREVER WITH NO OPTION FOR TERMINATION OR WRITTEN EXIT NOTICES, EXCEPT ON TOTAL LIQUIDATION OF EITHER PARTY.
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"""
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}
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SAMPLE_CONTRACT_DETAILS = {
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"standard-vendor-agreement.pdf": {
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"contract_value": 250000.0,
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"contractor_name": "ACME CLOUD SOLUTIONS",
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"client_name": "GFD PLATFORM SYSTEMS",
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"start_date": "2026-06-01",
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"end_date": "2028-06-01",
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"liability_limit": "$1,000,000.00",
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"insurance_coverage": 2000000.0,
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"auto_renewal": False,
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"has_termination_clause": True,
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"term_length_years": 2,
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},
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"high-risk-liability-contract.pdf": {
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"contract_value": 450000.0,
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"contractor_name": "APEX DATA SYSTEMS",
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"client_name": "GFD PLATFORM SYSTEMS",
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"start_date": "2026-06-01",
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"end_date": "2027-06-01",
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"liability_limit": "unlimited liability",
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"insurance_coverage": 1500000.0,
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"auto_renewal": False,
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"has_termination_clause": True,
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"term_length_years": 1,
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},
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"non-compliant-contract.pdf": {
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"contract_value": 850000.0,
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"contractor_name": "LEGACY NETWORKS CORP",
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"client_name": "GFD PLATFORM SYSTEMS",
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"start_date": "2026-06-01",
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"end_date": "2032-06-01",
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"liability_limit": "unlimited liability",
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"insurance_coverage": 500000.0,
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"auto_renewal": True,
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"has_termination_clause": False,
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"term_length_years": 6,
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},
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}
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MONTHS = {
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"january": "01",
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"february": "02",
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"march": "03",
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"april": "04",
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"may": "05",
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"june": "06",
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"july": "07",
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"august": "08",
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"september": "09",
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"october": "10",
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"november": "11",
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"december": "12",
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}
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def _money_to_float(value: str) -> float:
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return float(value.replace("$", "").replace(",", ""))
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def _iso_date(month: str, day: str, year: str) -> str:
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return f"{year}-{MONTHS[month.lower()]}-{int(day):02d}"
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def extract_contract_details_from_text(filename: str, text: str) -> dict:
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"""Extracts deterministic contract fields from uploaded text for the cockpit demo."""
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sample_name = os.path.basename(filename)
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normalized_text = text.strip()
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if not normalized_text and sample_name in SAMPLE_CONTRACT_DETAILS:
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return dict(SAMPLE_CONTRACT_DETAILS[sample_name])
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amounts = re.findall(r"\$[\d,]+(?:\.\d{2})?", normalized_text)
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dates = re.findall(
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r"(January|February|March|April|May|June|July|August|September|October|November|December)\s+(\d{1,2}),\s+(\d{4})",
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normalized_text,
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flags=re.IGNORECASE,
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)
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parties = re.search(
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r"between\s+(.+?)\s+\(\"Contractor\"\)\s+and\s+(.+?)\s+\(\"Client\"\)",
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normalized_text,
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flags=re.IGNORECASE | re.DOTALL,
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)
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duration = re.search(r"(\d+)\s+years?", normalized_text, flags=re.IGNORECASE)
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liability_section = ""
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liability_match = re.search(
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r"LIMITATION OF LIABILITY:\s*(.*?)(?:\n\s*\n|INSURANCE:)",
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normalized_text,
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flags=re.IGNORECASE | re.DOTALL,
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)
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if liability_match:
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liability_section = liability_match.group(1).strip()
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lower_text = normalized_text.lower()
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termination_section = ""
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termination_match = re.search(
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r"TERMINATION:\s*(.*?)(?:\n\s*\n|$)",
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normalized_text,
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flags=re.IGNORECASE | re.DOTALL,
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)
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if termination_match:
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termination_section = termination_match.group(1).strip().lower()
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has_termination_clause = "terminate" in lower_text or "termination" in lower_text
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blocked_termination_phrases = (
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"no option for termination",
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"no option for termination or written exit",
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"no termination",
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"without termination",
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)
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if any(phrase in termination_section for phrase in blocked_termination_phrases):
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has_termination_clause = False
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return {
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"contract_value": _money_to_float(amounts[0]) if amounts else 0.0,
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"contractor_name": parties.group(1).strip() if parties else "Unknown Contractor",
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"client_name": parties.group(2).strip() if parties else "Unknown Client",
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"start_date": _iso_date(*dates[0]) if dates else "",
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"end_date": _iso_date(*dates[1]) if len(dates) > 1 else "",
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"liability_limit": liability_section or "unknown",
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"insurance_coverage": _money_to_float(amounts[-1]) if len(amounts) > 1 else 0.0,
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"auto_renewal": "automatically renew" in lower_text,
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"has_termination_clause": has_termination_clause,
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"term_length_years": int(duration.group(1)) if duration else 1,
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}
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def classify_contract_risk(details: dict) -> dict:
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"""Classifies legal risk from extracted details without requiring an ADK context."""
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liability = details.get("liability_limit", "").lower()
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value = details.get("contract_value", 0.0)
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term = details.get("term_length_years", 1)
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risk_factors = []
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if "unlimited" in liability or "none" in liability:
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risk_factors.append("Unlimited contractor liability")
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if value > 500000.0:
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risk_factors.append("High financial obligation value (> $500k)")
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if term > 5:
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risk_factors.append("Extended engagement lifecycle duration (> 5 years)")
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if not details.get("has_termination_clause", True):
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risk_factors.append("Missing exit notice termination safety clauses")
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if len(risk_factors) >= 2 or "Unlimited contractor liability" in risk_factors:
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risk_tier = "HIGH"
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elif len(risk_factors) == 1:
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risk_tier = "MEDIUM"
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else:
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risk_tier = "LOW"
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return {"risk_tier": risk_tier, "risk_factors": risk_factors}
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def read_contract_text(file_path: str, tool_context: ToolContext) -> str:
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"""Reads contract file text content securely, verifying path boundaries.
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Args:
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file_path: The filename or target path of the contract text fixture.
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Returns:
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The raw text content extracted from the contract.
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"""
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try:
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# Enforce sandbox isolation limits
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secure_path = _secure_resolve_path(file_path)
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filename = os.path.basename(secure_path)
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if os.path.exists(secure_path):
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with open(secure_path, "r", encoding="utf-8", errors="ignore") as f:
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return f.read()
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# Fallback registry keeps legacy tests and empty demo environments usable.
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if filename in MOCK_CONTRACT_TEXTS:
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return MOCK_CONTRACT_TEXTS[filename]
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return f"[Error: Target contract file '{filename}' was not found in uploads sandbox directory.]"
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except Exception as e:
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return f"[Error reading file: {e!s}]"
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def save_extracted_fields(
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contract_value: float,
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contractor_name: str,
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client_name: str,
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start_date: str,
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end_date: str,
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liability_limit: str,
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insurance_coverage: float,
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auto_renewal: bool,
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has_termination_clause: bool,
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tool_context: ToolContext,
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) -> dict:
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"""Saves extracted contract parameters directly to persistent ADK session state.
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Rule 24 & Masking Enforcement: Sensitive identifiers are secured.
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"""
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state = tool_context.state
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# Construct structured contract data profile
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contract_data = {
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"contract_value": contract_value,
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"contractor_name": contractor_name,
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"client_name": client_name,
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"start_date": start_date,
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"end_date": end_date,
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"liability_limit": liability_limit,
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"insurance_coverage": insurance_coverage,
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"auto_renewal": auto_renewal,
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"has_termination_clause": has_termination_clause,
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}
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state["contract_details"] = contract_data
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state["current_step"] = ComplianceStep.EXTRACTED
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state["pending_signals"] = ["a2a_compliance_check"]
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# Calculate term length (approximate)
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try:
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start_year = int(start_date.split("-")[0])
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end_year = int(end_date.split("-")[0])
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term_years = max(1, end_year - start_year)
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except Exception:
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term_years = 1
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contract_data["term_length_years"] = term_years
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return {
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"status": "success",
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"message": f"Contract parameters successfully extracted for {contractor_name}.",
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"extracted_details": contract_data,
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}
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def classify_risk_level(tool_context: ToolContext) -> dict:
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"""Evaluates extracted clauses to determine initial legal risk tier.
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Returns:
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A dictionary with risk classification verdict.
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"""
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state = tool_context.state
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details = state.get("contract_details", {})
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if not details:
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return {"status": "error", "message": "No contract parameters extracted yet."}
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state["risk_assessment"] = classify_contract_risk(details)
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return {
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"status": "success",
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"risk_tier": state["risk_assessment"]["risk_tier"],
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"risk_factors": state["risk_assessment"]["risk_factors"],
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}
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def generate_summary_report(tool_context: ToolContext) -> dict:
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"""Generates the final multi-agent compliance summary and HTML certificate.
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Writes safety report artifacts securely inside Sandbox target bounds.
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"""
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state = tool_context.state
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case_id = state.get("case_id", "local-case")
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details = state.get("contract_details", {})
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risk = state.get("risk_assessment", {})
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verdict = state.get("compliance_verdict", {})
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if not details:
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return {"status": "error", "message": "No data extracted."}
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# Set final steps
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state["current_step"] = ComplianceStep.APPROVED if verdict.get("passed", False) else ComplianceStep.REVIEW_READY
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state["pending_signals"] = []
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report_data = {
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"case_id": case_id,
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"contractor": details.get("contractor_name", "Unknown Contractor"),
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"client": details.get("client_name", "GFD Platform Systems"),
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"value": details.get("contract_value", 0.0),
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"term": f"{details.get('start_date')} to {details.get('end_date')} ({details.get('term_length_years')} yrs)",
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"risk_tier": risk.get("risk_tier", "MEDIUM"),
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"risk_factors": risk.get("risk_factors", []),
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"passed": verdict.get("passed", False),
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"violations": verdict.get("violations", []),
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"timestamp": state.get("completion_time", "N/A"),
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}
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state["final_report"] = report_data
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return {
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"status": "success",
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"message": f"Legal audit report compiled successfully for case {case_id}.",
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"report_profile": report_data,
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}
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