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I am using the GMail API to retrieve messages. The messages are machine generated, so follow a similar format.

Although most of the messages are fine, I am getting a DOMException using atob to decode the message body for a subset of the messages.

I think I've narrowed it down to messages that have a section in it that looks like:

     --------------------- Sudo (secure-log) Begin ------------------------ 


     jeremy => root
     --------------
     /usr/bin/docker                -   5 Time(s).

     ---------------------- Sudo (secure-log) End -------------------------

Specifically I think that the problem happens because of the =>.

The error is: Error parsing DOMException: Failed to execute 'atob' on 'Window': The string to be decoded is not correctly encoded.

Code fragment:

    gapi.client.gmail.users.threads.get({
       userId: 'me',
       id:     thread.id
    })
    .then(function(response){
       var
          content,
          message = response.result.messages[0],
          rawContent = message.payload.body.data;

    try{
       content = atob(rawContent);
    }
user2521816
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1 Answers1

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This thread helped me Decode URL Safe Base64 in JavaScript (browser side)

    rawContent = rawContent.replace(/_/g, '/').replace(/-/g, '+');

Fixed it up.

user2521816
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  • 6