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import logging
from dataclasses import dataclass
from datetime import date, datetime
from enum import Enum
from pathlib import Path
from typing import Dict, Iterator, List, Mapping, Optional, Set, Union
import requests
from bs4 import BeautifulSoup, Tag
from sec_certs.constants import FIPS_MIP_STATUS_RE
from sec_certs.helpers import to_utc
from sec_certs.serialization.json import ComplexSerializableType
logger = logging.getLogger(__name__)
class MIPStatus(Enum):
IN_REVIEW = "In Review"
REVIEW_PENDING = "Review Pending"
COORDINATION = "Coordination"
FINALIZATION = "Finalization"
@dataclass(frozen=True)
class MIPEntry(ComplexSerializableType):
module_name: str
vendor_name: str
standard: str
status: Optional[MIPStatus]
status_since: Optional[date]
def to_dict(self) -> Dict[str, Union[str, Optional[MIPStatus], Optional[date]]]:
return {
**self.__dict__,
"status": self.status.value if self.status else None,
"status_since": self.status_since.isoformat() if self.status_since else None,
}
@classmethod
def from_dict(cls, dct: Mapping) -> "MIPEntry":
return cls(
dct["module_name"],
dct["vendor_name"],
dct["standard"],
MIPStatus(dct["status"]) if dct["status"] else None,
date.fromisoformat(dct["status_since"]) if dct.get("status_since") else None,
)
@dataclass
class MIPSnapshot(ComplexSerializableType):
entries: Set[MIPEntry]
timestamp: datetime
last_updated: date
displayed: int
not_displayed: int
total: int
def __len__(self) -> int:
return len(self.entries)
def __iter__(self) -> Iterator[MIPEntry]:
yield from self.entries
def to_dict(self) -> Dict[str, Union[int, str, List[MIPEntry]]]:
return {
"entries": list(self.entries),
"timestamp": self.timestamp.isoformat(),
"last_updated": self.last_updated.isoformat(),
"displayed": self.displayed,
"not_displayed": self.not_displayed,
"total": self.total,
}
@classmethod
def from_dict(cls, dct: Mapping) -> "MIPSnapshot":
return cls(
set(dct["entries"]),
datetime.fromisoformat(dct["timestamp"]),
date.fromisoformat(dct["last_updated"]),
dct["displayed"],
dct["not_displayed"],
dct["total"],
)
@classmethod
def _extract_entries_1(cls, lines):
"""Works until 2020.10.28 (including)."""
entries = set()
for tr in lines:
tds = tr.find_all("td")
status = None
if "mip-highlight" in tds[-1]["class"]:
status = MIPStatus.FINALIZATION
elif "mip-highlight" in tds[-2]["class"]:
status = MIPStatus.COORDINATION
elif "mip-highlight" in tds[-3]["class"]:
status = MIPStatus.REVIEW_PENDING
elif "mip-highlight" in tds[-4]["class"]:
status = MIPStatus.IN_REVIEW
entries.add(MIPEntry(str(tds[0].string), str(tds[1].string), str(tds[2].string), status, None))
return entries
@classmethod
def _extract_entries_2(cls, lines):
"""Works until 2021.04.20 (including)."""
return {
MIPEntry(
str(line[0].string), str(line[1].string), str(line[2].string), MIPStatus(str(line[3].string)), None
)
for line in map(lambda tr: tr.find_all("td"), lines)
}
@classmethod
def _extract_entries_3(cls, lines):
"""Works until 2022.03.23 (including)."""
return {
MIPEntry(
str(line[0].string),
str(" ".join(line[1].find_all(text=True, recursive=False)).strip()),
str(line[2].string),
MIPStatus(str(line[3].string)),
None,
)
for line in map(lambda tr: tr.find_all("td"), lines)
}
@classmethod
def _extract_entries_4(cls, lines):
"""Works now."""
entries = set()
for line in map(lambda tr: tr.find_all("td"), lines):
module_name = str(line[0].string)
vendor_name = str(" ".join(line[1].find_all(text=True, recursive=False)).strip())
standard = str(line[2].string)
status_line = FIPS_MIP_STATUS_RE.match(str(line[3].string))
if status_line is None:
raise ValueError("Cannot parse MIP status line.")
status = MIPStatus(status_line.group("status"))
since = datetime.strptime(status_line.group("since"), "%m/%d/%Y").date()
entries.add(MIPEntry(module_name, vendor_name, standard, status, since))
return entries
@classmethod
def _extract_entries(cls, lines, snapshot_date):
if snapshot_date <= datetime(2020, 10, 28):
entries = cls._extract_entries_1(lines)
elif snapshot_date <= datetime(2021, 4, 20):
entries = cls._extract_entries_2(lines)
elif snapshot_date <= datetime(2022, 3, 23):
entries = cls._extract_entries_3(lines)
else:
entries = cls._extract_entries_4(lines)
return entries
@classmethod
def from_page(cls, content: bytes, snapshot_date: datetime) -> "MIPSnapshot":
if not content:
raise ValueError("Empty content in MIP.")
soup = BeautifulSoup(content, "html.parser")
tables = soup.find_all("table")
if len(tables) != 1:
raise ValueError("Not only a single table in MIP data.")
# Parse Last Updated
last_updated_elem = next(
filter(
lambda e: isinstance(e, Tag) and e.name == "p",
soup.find(id="content").next_siblings,
)
)
last_updated_text = str(last_updated_elem.string).strip()
last_updated = datetime.strptime(last_updated_text, "Last Updated: %m/%d/%Y").date()
# Parse entries
table = tables[0].find("tbody")
lines = table.find_all("tr")
entries = cls._extract_entries(lines, snapshot_date)
# Parse footer
footer = soup.find(id="MIPFooter")
footer_lines = footer.find_all("tr")
displayed = int(footer_lines[0].find_all("td")[1].text)
not_displayed = int(footer_lines[1].find_all("td")[1].text)
total = int(footer_lines[2].find_all("td")[1].text)
return cls(
entries=entries,
timestamp=snapshot_date,
last_updated=last_updated,
displayed=displayed,
not_displayed=not_displayed,
total=total,
)
@classmethod
def from_dump(cls, dump_path: Union[str, Path], snapshot_date: Optional[datetime] = None) -> "MIPSnapshot":
dump_path = Path(dump_path)
if snapshot_date is None:
try:
snapshot_date = to_utc(datetime.fromisoformat(dump_path.name[len("fips_mip_") : -len(".html")]))
except Exception:
raise ValueError("snapshot_date not given and could not be inferred from filename.")
with dump_path.open("rb") as f:
content = f.read()
return cls.from_page(content, snapshot_date)
@classmethod
def from_web(cls) -> "MIPSnapshot":
mip_url = "https://csrc.nist.gov/Projects/cryptographic-module-validation-program/modules-in-process/Modules-In-Process-List"
mip_resp = requests.get(mip_url)
if mip_resp.status_code != 200:
raise ValueError("Getting MIP snapshot failed")
snapshot_date = to_utc(datetime.now())
return cls.from_page(mip_resp.content, snapshot_date)
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