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af11's avatar
af11
Explorer | Level 4
3 years ago

dropbox.exceptions.BadInputError

I am trying to connect an app to my company dropbox account.

Here is the code:

 

from hashlib import sha256
import hmac
import json
import os
import threading
import urllib.parse
from dotenv import load_dotenv

from dropbox import Dropbox, DropboxOAuth2Flow
from dropbox.files import DeletedMetadata, FolderMetadata, WriteMode
from flask import abort, Flask, redirect, render_template, Response, request, session, url_for
from markdown import markdown
import redis

load_dotenv()

redis_url = os.environ.get('REDISTOGO_URL')
redis_client = redis.from_url(redis_url, decode_responses=True)

# App key and secret from the App console (dropbox.com/developers/apps)
APP_KEY = os.environ.get('APP_KEY')
APP_SECRET = os.environ.get('APP_SECRET')

app = Flask(__name__)
app.debug = True

# A random secret used by Flask to encrypt session data cookies
app.secret_key = os.environ.get('FLASK_SECRET_KEY')

def get_url(route):
    '''Generate a proper URL, forcing HTTPS if not running locally'''
    host = urllib.parse.urlparse(request.url).hostname
    url = url_for(
        route,
        _external=True,
        _scheme='http' if host in ('127.0.0.1', 'localhost') else 'https'
    )
    print(f'url {url}')
    return url

def get_flow():
    return DropboxOAuth2Flow(
        APP_KEY,
        APP_SECRET,
        get_url('oauth_callback'),
        session,
        'dropbox-csrf-token')

@app.route('/welcome')
def welcome():
    return render_template('welcome.html', redirect_url=get_url('oauth_callback'),
        webhook_url=get_url('webhook'), home_url=get_url('index'), app_key=APP_KEY)

@app.route('/oauth_callback')
def oauth_callback():
    '''Callback function for when the user returns from OAuth.'''

    auth_result = get_flow().finish(request.args)
    account = auth_result.account_id
    access_token = auth_result.access_token

    # Extract and store the access token for this user
    redis_client.hset('tokens', account, access_token)

    process_user(account)

    return redirect(url_for('done'))

def process_user(account):
    '''Call /files/list_folder for the given user ID and process any changes.'''

    # OAuth token for the user
    token = redis_client.hget('tokens', account)

    # cursor for the user (None the first time)
    cursor = redis_client.hget('cursors', account)

    dbx = Dropbox(token)
    has_more = True


    while has_more:
        if cursor is None:
            result = dbx.files_list_folder(path='')
        else:
            result = dbx.files_list_folder_continue(cursor)

        for entry in result.entries:
            # Ignore deleted files, folders, and non-markdown files
            if (isinstance(entry, DeletedMetadata) or
                isinstance(entry, FolderMetadata) or
                not entry.path_lower.endswith('.md')):
                continue

            # Convert to Markdown and store as <basename>.html
            _, resp = dbx.files_download(entry.path_lower)
            html = markdown(resp.content.decode("utf-8"))
            dbx.files_upload(bytes(html, encoding='utf-8'), entry.path_lower[:-3] + '.html', mode=WriteMode('overwrite'))

        # Update cursor
        cursor = result.cursor
        redis_client.hset('cursors', account, cursor)

        # Repeat only if there's more to do
        has_more = result.has_more

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/login')
def login():
    return redirect(get_flow().start())

@app.route('/done')
def done():
    return render_template('done.html')

@app.route('/webhook', methods=['GET'])
def challenge():
    '''Respond to the webhook challenge (GET request) by echoing back the challenge parameter.'''

    resp = Response(request.args.get('challenge'))
    resp.headers['Content-Type'] = 'text/plain'
    resp.headers['X-Content-Type-Options'] = 'nosniff'

    return resp

@app.route('/webhook', methods=['POST'])
def webhook():
    '''Receive a list of changed user IDs from Dropbox and process each.'''

    # Make sure this is a valid request from Dropbox
    signature = request.headers.get('X-Dropbox-Signature')
    key = bytes(APP_SECRET, encoding="ascii")
    computed_signature = hmac.new(key, request.data, sha256).hexdigest()
    if not hmac.compare_digest(signature, computed_signature):
        abort(403)

    for account in json.loads(request.data)['list_folder']['accounts']:
        # We need to respond quickly to the webhook request, so we do the
        # actual work in a separate thread. For more robustness, it's a
        # good idea to add the work to a reliable queue and process the queue
        # in a worker process.
        threading.Thread(target=process_user, args=(account,)).start()
    return ''

if __name__=='__main__':
    app.run(debug=True)

 

  • The DropboxTeam.as_admin method returns a Dropbox object; it doesn't modify the existing DropboxTeam object (dbx in your latest snippet here). So, the code in your latest snippet won't allow you to call files_list_folder on that 'dbx' object. You should save the returned Dropbox object and use that instead.

  • af11's avatar
    af11
    Explorer | Level 4

    I get an error

    dropbox.exceptions.BadInputError

    dropbox.exceptions.BadInputError: BadInputError('4d74b1405c1c445d8449545260b7b9a1', 'Error in call to API function "users/get_current_account": This API function operates on a single Dropbox account, but the OAuth 2 access token you provided is for an entire Dropbox Business team. Since your API app key has team member file access permissions, you can operate on a team member\'s Dropbox by providing the "Dropbox-API-Select-User" HTTP header or "select_user" URL parameter to specify the exact user <https://www.dropbox.com/developers/documentation/http/teams>.')

     

    How can I fix this being that I'm using dropbox version 9.4.0.

    And where in the code should I fix it?

     

    Thank you!

    • Greg-DB's avatar
      Greg-DB
      Icon for Dropbox Staff rankDropbox Staff

      This error message in particular is referring to specifying what account on the Business team to operate on behalf of. For reference, when using any "team scopes", the resulting access token is connected to an entire Dropbox Business team, not an individual account. So, when using a team-scoped access token to access user-specific endpoints, such as /2/users/get_current_account (users_get_current_account in the Python SDK), you will need to specify which member of the team you want to operate on behalf of. 

      To do this, you'd need to specify the 'Dropbox-API-Select-User' header (or 'Dropbox-API-Select-Admin' as needed/desired). The value should be the team_member_id for whichever member you wish to act on behalf of. In the Python SDK, you can set that header using the DropboxTeam.as_user method (or DropboxTeam.as_admin).

      Alternatively, if you just want to connect to a particular account, you can disable any team scopes and get a new access token without them. The access token without the team scopes will be specific to the particular account (Business or not) and so will not require the additional header. You can find more information on scopes in the OAuth Guide. If you don't need to call any team endpoints (e.g., if you just need to call individual endpoints, such as /2/users/get_current_account (users_get_current_account in the Python SDK)), I recommend this solution instead for simplicity and security.

      • af11's avatar
        af11
        Explorer | Level 4

        Thank you.

        I did that now:

         id = os.environ.get('USER_ID')
         dbx = DropboxTeam(token)
         dbx.as_admin(id)

        But now, I can't do all the methods that I did in the Dropbox class above, for example files_list_folder().

        How can I be able to do these methods?

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