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fix: ensure dialog.showErrorBox() arguments are strings (#497)

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If for some reason either the error title or message are not strings,
the user gets a very obscure error that looks something like this:

```
Error: Could not call remote function ''.
Check that the function signature is correct.
Underlying error:
  Error processing argument at index 0, conversion failure
```

What's even worse is that the above error is thrown when we attempt to
display an `Error` object, therefore completely hiding the real error.

In this commit, we make sure both parameters to `showErrorBox()` are
strings, as a safety measure to prevent this from happening again.

See: https://github.com/resin-io/etcher/issues/127
Signed-off-by: Juan Cruz Viotti <jviottidc@gmail.com>
This commit is contained in:
Juan Cruz Viotti 2016-06-22 10:40:51 -04:00 committed by GitHub
parent 24f442a8fc
commit 4670ae125b
1 changed files with 12 additions and 1 deletions
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13
lib/gui/os/dialog/services/dialog.js
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@ -107,7 +107,18 @@ module.exports = function($q, SupportedFormatsModel) {
});
const message = description || error.stack || JSON.stringify(error) || '';
electron.remote.dialog.showErrorBox(title, message);
// Ensure the parameters are strings to prevent the following
// types of obscure errors:
//
// Error: Could not call remote function ''.
// Check that the function signature is correct.
// Underlying error:
// Error processing argument at index 0, conversion failure
//
// This can be thrown if for some reason, either `title` or `message`
// are not strings.
electron.remote.dialog.showErrorBox(title.toString(), message.toString());
};
};