mirror of
https://github.com/Garmelon/PFERD.git
synced 2023-12-21 10:23:01 +01:00
161 lines
6.1 KiB
Python
Executable File
161 lines
6.1 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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A simple script to download a course by name from ILIAS.
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"""
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import argparse
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import logging
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import sys
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from pathlib import Path, PurePath
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from typing import Optional
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from urllib.parse import urlparse
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from PFERD import Pferd
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from PFERD.authenticators import KeyringAuthenticator, UserPassAuthenticator
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from PFERD.cookie_jar import CookieJar
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from PFERD.ilias import (IliasCrawler, IliasElementType,
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KitShibbolethAuthenticator)
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from PFERD.logging import PrettyLogger, enable_logging
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from PFERD.organizer import (ConflictType, FileConflictResolution,
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FileConflictResolver, resolve_prompt_user)
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from PFERD.transform import sanitize_windows_path
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from PFERD.utils import to_path
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_LOGGER = logging.getLogger("sync_url")
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_PRETTY = PrettyLogger(_LOGGER)
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def _extract_credentials(file_path: Optional[str]) -> UserPassAuthenticator:
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if not file_path:
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return UserPassAuthenticator("KIT ILIAS Shibboleth", None, None)
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if not Path(file_path).exists():
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_PRETTY.error("Credential file does not exist")
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sys.exit(1)
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with open(file_path, "r") as file:
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first_line = file.read().splitlines()[0]
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read_name, *read_password = first_line.split(":", 1)
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name = read_name if read_name else None
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password = read_password[0] if read_password else None
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return UserPassAuthenticator("KIT ILIAS Shibboleth", username=name, password=password)
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def _resolve_remote_first(_path: PurePath, _conflict: ConflictType) -> FileConflictResolution:
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return FileConflictResolution.DESTROY_EXISTING
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def _resolve_local_first(_path: PurePath, _conflict: ConflictType) -> FileConflictResolution:
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return FileConflictResolution.KEEP_EXISTING
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def _resolve_no_delete(_path: PurePath, conflict: ConflictType) -> FileConflictResolution:
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# Update files
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if conflict == ConflictType.FILE_OVERWRITTEN:
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return FileConflictResolution.DESTROY_EXISTING
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if conflict == ConflictType.MARKED_FILE_OVERWRITTEN:
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return FileConflictResolution.DESTROY_EXISTING
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# But do not delete them
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return FileConflictResolution.KEEP_EXISTING
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def main() -> None:
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enable_logging(name="sync_url")
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parser = argparse.ArgumentParser()
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parser.add_argument("--test-run", action="store_true")
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parser.add_argument('-c', '--cookies', nargs='?', default=None, help="File to store cookies in")
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parser.add_argument('-u', '--username', nargs='?', default=None, help="Username for Ilias")
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parser.add_argument('-p', '--password', nargs='?', default=None, help="Password for Ilias")
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parser.add_argument('--credential-file', nargs='?', default=None,
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help="Path to a file containing credentials for Ilias. The file must have "
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"one line in the following format: '<user>:<password>'")
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parser.add_argument("-k", "--keyring", action="store_true",
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help="Use the system keyring service for authentication")
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parser.add_argument('--no-videos', action="store_true", help="Don't download videos")
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parser.add_argument('--local-first', action="store_true",
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help="Don't prompt for confirmation, keep existing files")
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parser.add_argument('--remote-first', action="store_true",
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help="Don't prompt for confirmation, delete and overwrite local files")
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parser.add_argument('--no-delete', action="store_true",
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help="Don't prompt for confirmation, overwrite local files, don't delete")
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parser.add_argument('url', help="URL to the course page")
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parser.add_argument('folder', nargs='?', default=None, help="Folder to put stuff into")
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args = parser.parse_args()
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cookie_jar = CookieJar(to_path(args.cookies) if args.cookies else None)
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session = cookie_jar.create_session()
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if args.keyring:
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if not args.username:
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_PRETTY.error("Keyring auth selected but no --username passed!")
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return
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inner_auth: UserPassAuthenticator = KeyringAuthenticator(
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"KIT ILIAS Shibboleth", username=args.username, password=args.password
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)
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else:
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inner_auth = _extract_credentials(args.credential_file)
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username, password = inner_auth.get_credentials()
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authenticator = KitShibbolethAuthenticator(inner_auth)
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url = urlparse(args.url)
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crawler = IliasCrawler(url.scheme + '://' + url.netloc, session,
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authenticator, lambda x, y: True)
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cookie_jar.load_cookies()
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if args.folder is None:
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element_name = crawler.find_element_name(args.url)
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if not element_name:
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print("Error, could not get element name. Please specify a folder yourself.")
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return
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folder = sanitize_windows_path(Path(element_name.replace("/", "-").replace("\\", "-")))
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cookie_jar.save_cookies()
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else:
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folder = Path(args.folder)
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# files may not escape the pferd_root with relative paths
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# note: Path(Path.cwd, Path(folder)) == Path(folder) if it is an absolute path
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pferd_root = Path(Path.cwd(), Path(folder)).parent
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# Folder might be a *PurePath* at this point
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target = Path(folder).resolve().name
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pferd = Pferd(pferd_root, test_run=args.test_run)
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def dir_filter(_: Path, element: IliasElementType) -> bool:
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if args.no_videos:
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return element not in [IliasElementType.VIDEO_FILE, IliasElementType.VIDEO_FOLDER]
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return True
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if args.local_first:
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file_conflict_resolver: FileConflictResolver = _resolve_local_first
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elif args.no_delete:
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file_conflict_resolver = _resolve_no_delete
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elif args.remote_first:
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file_conflict_resolver = _resolve_remote_first
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else:
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file_conflict_resolver = resolve_prompt_user
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pferd.enable_logging()
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# fetch
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pferd.ilias_kit_folder(
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target=target,
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full_url=args.url,
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cookies=args.cookies,
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dir_filter=dir_filter,
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username=username,
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password=password,
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file_conflict_resolver=file_conflict_resolver,
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transform=sanitize_windows_path
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)
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pferd.print_summary()
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if __name__ == "__main__":
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main()
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