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# PetscGoogleDriveAuthorize
Get authorization and refresh token for accessing Google drive from PETSc 
## Synopsis
```
PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm, char access_token[], char refresh_token[], size_t tokensize)
```
Not Collective, only the first process in `MPI_Comm` does anything


## Input Parameters

- ***comm -*** the MPI communicator
- ***tokensize -*** size of the token arrays



## Output Parameters

- ***access_token -*** can be used with `PetscGoogleDriveUpload()` for this one session
- ***refresh_token -*** can be used for ever to obtain new access_tokens with `PetscGoogleDriveRefresh()`, guard this like a password
it gives access to your Google Drive





## Notes
This call requires `stdout` and `stdin` access from process 0 on the MPI communicator

You can run src/sys/webclient/tutorials/googleobtainrefreshtoken to get a refresh token and then in the future pass it to
PETSc programs with `-google_refresh_token XXX`


## See Also
 `PetscGoogleDriveRefresh()`, `PetscGoogleDriveUpload()`, `PetscURLShorten()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/webclient/google.c.html#PetscGoogleDriveAuthorize">src/sys/webclient/google.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/webclient/tutorials/googleobtainrefreshtoken.c.html">src/sys/webclient/tutorials/googleobtainrefreshtoken.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/webclient/google.c)


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