Google Spreadsheet — get sharing permissions by script

Question

Is it possible to get list of users and permissions from google spreadsheet by javascript?

I have several spreadsheets on shared google drive and I want to check , how are set sharing permissions by script. I am sharing these spreadsheets with more than 20 another users, so it is difficult to check every spreadsheet manually.

Is it possible?

And is it possible to run some script also above whole google drive? For example if I would like to get list of all google spredsheets and folders on drive with sharing permissions list, can I write some javascript above google drive?

Thank you very much

Answer 1

Disclaimer - This is my first Goolge Apps script, so I'm not 100% sure this is what you want.

I used the DocsList API to list the owner , the editors and the viewers of every spreadsheet in a given Google Drive folder:

function start() {
  var folder = DocsList.getFolderById("...put folder ID here..."),
      files = folder.getFilesByType(DocsList.FileType.SPREADSHEET), file = null, spreadsheet = null,
      owner = null, editors = null, editor = null, viewers = null, viewer = null,
      i = 0, j = 0;

  for (i = 0; i < files.length; i += 1) {
    file = files[i];
    Logger.log("===== Spreadsheet " + (i + 1) + "/" + files.length + ": " + file.getName() + " =====");
    spreadsheet = SpreadsheetApp.openById(file.getId());
    owner = spreadsheet.getOwner();
    Logger.log("- Owner: " + owner.getEmail());
    editors = spreadsheet.getEditors();
    for (j = 0; j < editors.length; j += 1) {
      editor = editors[j];
      Logger.log("- Editor " + (j + 1) + "/" + editors.length + ": " + editor.getEmail());
    }
    viewers = spreadsheet.getViewers();
    for (j = 0; j < viewers.length; j += 1) {
      viewer = viewers[j];
      Logger.log("- Viewer " + (j + 1) + "/" + viewers.length + ": " + viewer.getEmail());
    }
  }
}

Note that the list of viewers contains the commenters too, these two groups are not seprated by this API. I tested this code, and it works for me. You can easily generalize it to iterate over every folder .