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Re: [Duplicity-talk] Best Duplicity 8 backend for Google Drive?

From: edgar . soldin
Subject: Re: [Duplicity-talk] Best Duplicity 8 backend for Google Drive?
Date: Tue, 17 Aug 2021 11:38:31 +0200
User-agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0

ok Peter,

just wasted 2hs on this, because you got me interested :). essentially, the 
problem is twofold, with the first problem being the "bigger" issue

issue1. duplicity does not provide a client API authentification. it has to be 
created by every user themselves on https://console.developers.google.com
issue2. figure out the url to use, as it is not mentioned in the man page

if you managed to do all that _and_ pip3 installed really all (google*) modules 
duplicity complains about being needed, it works as expected

so for issue1
1. login to google drive in your browser
2. go to https://console.developers.google.com
3. create a project (!), switch to it
4. Library -> add Google-Drive-API
5. Credentials -> add OAuth-Client
6. OAuth Consent screen -> publish (else you'll get 
7. download "client_secret_<client_id>.apps.googleusercontent.com.json" and 
place it on your backup machine as '~/gdrive_client.json' (used below)

wrt. to issue2
the url to use looks like
 gdrive://<client_id>.apps.googleusercontent.com/<subfolder_to place files 

you can get the folder id as described here 
didn't check if the subfolder is really needed btw.

now you should be set and you can try running a backup like
 export GOOGLE_CLIENT_SECRET_JSON_FILE=~/gdrive_client.json
 export GOOGLE_CREDENTIALS_FILE=~/gdrive_creds
 duplicity-0.8.20/bin/duplicity temp/ 

it'll ask you to visit the url and provide a secret and fill '~/gdrive_creds' 
for subsequent runs.

hope that helps.. ede/duply.net

ps. @Ken - how about we provide a default duplicity client auth with duplicity 
distro to make life easier for users?

On 17.08.2021 05:19, zga9uhnq4g--- via Duplicity-talk wrote:
> Yes I did read it.  That's the "Note on GDrive Backend" section that I 
> mentioned I'm having trouble understanding.
> First, it talks about a "Google My Drive based shared folder" and I want to 
> use a Google My Drive regular (non-shared) folder (which Ken said should 
> work).
> Second, even though the "Note on GDrive Backend" section mentions using a 
> regular account (as an alternative to a "service account"), the example URL 
> in that section as well is the gdrive example in the URL Format section only 
> show "service account name" and "service account email address".  The last 
> sentence in the "Note on GDrive Backend" section seems to imply that the 
> OAuth client ID is alternative for the service email address, but doesn't 
> make it clear how/where to provide that client ID.
> In addition, the example URLS in the "URL Format" section and the "Note on 
> GDrive Backend" section look quite  different, so I'm not sure which format 
> to follow.
>     thanks,
>     Peter
> On 2021-08-16 19:41, edgar.soldin--- via Duplicity-talk 
> duplicity-talk-at-nongnu.org |duplicity-talk| wrote:
>> not familiar with gdrive, but did you read the man page section
>> http://duplicity.nongnu.org/vers8/duplicity.1.html#sect27 
>> <http://duplicity.nongnu.org/vers8/duplicity.1.html#sect27>
>> ?
>> ..ede/duply.net
>> On August 17, 2021 12:35:38 AM GMT+02:00, zga9uhnq4g--- via Duplicity-talk 
>> <duplicity-talk@nongnu.org> wrote:
>>     Thanks for the info Ken.
>>     A couple follow up questions.
>>       * Is there a way to contact the GDrive backend developer with 
>> questions, or is this list the best way?
>>       * I'm having trouble understanding the Note on GDrive Backend, 
>> specifically what the gdrive:// URL should look like.  If my Google Drive 
>> account is john_doe123@gmail.com and I want the duplicity backup stored in 
>> the (non-shared) /backup/duplicity folder, can you  (or someone) tell me 
>> what the gdrive:// URL should look like?
>>         thanks again,
>>         Peter
>>     On 2021-08-15 09:51, Kenneth Loafman kenneth-at-loafman.com 
>> |duplicity-talk| wrote:
>>>     Hi Peter,
>>>     All of our backends are written by volunteers, so I'm not the best one 
>>> to answer.
>>>       * gdocs is 10 years old and some still use it (to be deprecated in 
>>> 0.9.0).
>>>       * pydrive replaced gdocs 7 years ago and some still use it (to be 
>>> deprecated in 0.9.0).
>>>       * gdrive replaced pydrive 5 months ago.
>>>     As far as I know, all three still work, which is surprising since gdocs 
>>> is deprecated by Google.  I would suggest using gdrive.
>>>     A service account is for a team while a regular account is a normal 
>>> Google user.  I don't know any pros or cons.
>>>     No, My Drive folders do not need to be shared, they just need different 
>>> addressing than shared.
>>>     Sorry, that's all I can think of at the moment,  Hope it helps!
>>>     ...Ken
>>>     On Sun, Aug 15, 2021 at 12:23 AM zga9uhnq4g--- via Duplicity-talk 
>>> <duplicity-talk@nongnu.org <mailto:duplicity-talk@nongnu.org>> wrote:
>>>         Looking at the duplicity 8 man page, it appears that there are 
>>> several options for storing backups in Google Drive:
>>>           * gdocs://user[:password]@other.host/some_dir
>>>           * pydrive://<service account’ email 
>>> address>@developer.gserviceaccount.com/some_dir 
>>> <http://developer.gserviceaccount.com/some_dir>
>>>           * gdrive://<service account’ email 
>>> address>@developer.gserviceaccount.com/some_dir 
>>> <http://developer.gserviceaccount.com/some_dir>
>>>         Which of them should I expect to be the most reliable and efficient?
>>>         Searching duplicity-talk, I saw some indication that the gdocs API 
>>> has been deprecated, which makes me leery of using it.  The man page says 
>>> "GDrive: is a rewritten PyDrive: backend ...", but I didn't see any mention 
>>> of gdrive in duplicity-talk, so I'm not sure how widely it is being used.
>>>         I have a couple questions about the Notes on the Pydrive and Gdrive 
>>> backends in the man page:
>>>           * What are pros and cons of using a service account versus a 
>>> regular account?
>>>           * The Note on GDrive Backend only mentions using shared folders 
>>> for 'My Drive', does that mean I can't store a duplicity backup in a 
>>> non-shared folder?
>>>             thanks,
>>>             Peter
>>>         _______________________________________________
>>>         Duplicity-talk mailing list
>>>         Duplicity-talk@nongnu.org <mailto:Duplicity-talk@nongnu.org>
>>>         https://lists.nongnu.org/mailman/listinfo/duplicity-talk 
>>> <https://lists.nongnu.org/mailman/listinfo/duplicity-talk>
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