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#!/usr/bin/env python3
#
# Common functions for the Daily Bulletin Build System
# Copyright (C) 2024 Runxi Yu <https://runxiyu.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
from typing import Any, Iterable, Iterator
import logging
import re
import base64
import shutil
import requests
import msal # type: ignore
def acquire_token(
graph_client_id: str,
graph_authority: str,
graph_username: str,
graph_password: str,
graph_scopes: list[str],
) -> str:
app = msal.PublicClientApplication(
graph_client_id,
authority=graph_authority,
)
result = app.acquire_token_by_username_password(graph_username, graph_password, scopes=graph_scopes)
if "access_token" in result:
assert isinstance(result["access_token"], str)
return result["access_token"]
raise ValueError("Authentication error in password login")
def search_mail(token: str, query_string: str) -> list[dict[str, Any]]:
hits = requests.post(
"https://graph.microsoft.com/v1.0/search/query",
headers={"Authorization": "Bearer " + token},
json={
"requests": [
{
"entityTypes": ["message"],
"query": {"queryString": query_string},
"from": 0,
"size": 15,
"enableTopResults": True,
}
]
},
timeout=20,
).json()["value"][
0
]["hitsContainers"][
0
]["hits"]
assert isinstance(hits, list)
assert isinstance(hits[0], dict)
return hits
def encode_sharing_url(url: str) -> str:
return "u!" + base64.urlsafe_b64encode(url.encode("utf-8")).decode("ascii").rstrip("=")
def download_share_url(token: str, url: str, local_filename: str, chunk_size: int = 65536) -> None:
download_direct_url = requests.get(
"https://graph.microsoft.com/v1.0/shares/%s/driveItem" % encode_sharing_url(url),
headers={"Authorization": "Bearer " + token},
timeout=20,
).json()["@microsoft.graph.downloadUrl"]
with requests.get(
download_direct_url,
headers={
"Authorization": "Bearer %s" % token,
"Accept-Encoding": "identity",
},
stream=True,
timeout=20,
) as r:
with open(local_filename, "wb") as fd:
shutil.copyfileobj(r.raw, fd)
fd.flush()
def filter_mail_results_by_sender(original: Iterable[dict[str, Any]], sender: str) -> Iterator[dict[str, Any]]:
for hit in original:
if hit["resource"]["sender"]["emailAddress"]["address"].lower() == sender.lower():
yield hit
# TODO: Potentially replace this with a pattern-match based on strptime().
def filter_mail_results_by_subject_regex_groups(
original: Iterable[dict[str, Any]],
subject_regex: str,
subject_regex_groups: Iterable[int],
) -> Iterator[tuple[dict[str, Any], list[str]]]:
for hit in original:
logging.debug("Trying %s" % hit["resource"]["subject"])
matched = re.compile(subject_regex).match(hit["resource"]["subject"])
if matched:
yield (hit, [matched.group(group) for group in subject_regex_groups])
class DailyBulletinError(Exception):
pass
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