client.py

##
## client.py - Dropbox client implementation
##

# ** Optional libraries, uncomment if you need them **
# Search "python <name> library" for documentation
#import string  # Python library with useful string constants
#import dacite  # Helpers for serializing dicts into dataclasses
#import pymerkle # Merkle tree implementation (CS1620/CS2660 only, but still optional)

## ** Support code libraries ****
# The following imports load our support code from the "support"
# directory.  See the Dropbox wiki for usage and documentation.
import support.crypto as crypto                   # Our crypto library
import support.util as util                       # Various helper functions

# These imports load instances of the dataserver, keyserver, and memloc classes
# to use in your client. See the Dropbox Wiki and setup guide for examples.
from support.dataserver import dataserver, memloc
from support.keyserver import keyserver

# **NOTE**:  If you want to use any additional libraries, please ask on Ed
# first.  You are NOT permitted to use any additional cryptographic functions
# other than those provided by crypto.py, or any filesystem/networking libraries.

class User:
    def __init__(self) -> None:
        """
        Class constructor for the `User` class.

        You are free to add fields to the User class by changing the definition
        of this function.
        """
        pass

    def upload_file(self, filename: str, data: bytes) -> None:
        """
        The specification for this function is at:
        https://brown-csci1660.github.io/dropbox-wiki/client-api/storage/upload-file.html
        """
        # TODO: Implement
        raise util.DropboxError("Not Implemented")

    def download_file(self, filename: str) -> bytes:
        """
        The specification for this function is at:
        https://brown-csci1660.github.io/dropbox-wiki/client-api/storage/download-file.html
        """
        # TODO: Implement
        raise util.DropboxError("Not Implemented")

    def append_file(self, filename: str, data: bytes) -> None:
        """
        The specification for this function is at:
        https://brown-csci1660.github.io/dropbox-wiki/client-api/storage/append-file.html
        """
        # TODO: Implement
        raise util.DropboxError("Not Implemented")

    def share_file(self, filename: str, recipient: str) -> None:
        """
        The specification for this function is at:
        https://brown-csci1660.github.io/dropbox-wiki/client-api/sharing/share-file.html
        """
        # TODO: Implement
        raise util.DropboxError("Not Implemented")

    def receive_file(self, filename: str, sender: str) -> None:
        """
        The specification for this function is at:
        https://brown-csci1660.github.io/dropbox-wiki/client-api/sharing/receive-file.html
        """
        # TODO: Implement
        raise util.DropboxError("Not Implemented")

    def revoke_file(self, filename: str, old_recipient: str) -> None:
        """
        The specification for this function is at:
        https://brown-csci1660.github.io/dropbox-wiki/client-api/sharing/revoke-file.html
        """
        # TODO: Implement
        raise util.DropboxError("Not Implemented")

def create_user(username: str, password: str) -> User:
    """
    The specification for this function is at:
    https://brown-csci1660.github.io/dropbox-wiki/client-api/authentication/create-user.html
    """
    # TODO: Implement
    raise util.DropboxError("Not Implemented")

def authenticate_user(username: str, password: str) -> User:
    """
    The specification for this function is at:
    https://brown-csci1660.github.io/dropbox-wiki/client-api/authentication/authenticate-user.html
    """
    # TODO: Implement
    raise util.DropboxError("Not Implemented")