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Fixed error caused by uploading empty redirects YAML file (#18820)

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Fixed error caused by uploading empty redirects YAML file:

```
Cannot read properties of undefined (reading '302')
```

This error was occurring due to `yaml.load` returning `undefined` when
the provided yaml file was empty. I've made the check on the return
value of `yaml.load` stricter (i.e we only want an `object`) to prevent
this error from occurring.
This commit is contained in:
Michael Barrett 2023-11-02 08:17:52 +00:00 • committed by GitHub
parent defe0aeed7
commit 213e54aa71
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 17 additions and 8 deletions
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10
ghost/core/core/server/services/custom-redirects/CustomRedirectsAPI.js
View file

@ -9,7 +9,7 @@ const errors = require('@tryghost/errors');
const messages = {
jsonParse: 'Could not parse JSON: {context}.',
yamlParse: 'Could not parse YAML: {context}.',
yamlPlainString: 'YAML input cannot be a plain string. Check the format of your YAML file.',
yamlInvalid: 'YAML input is invalid. Check the contents of your YAML file.',
redirectsHelp: 'https://ghost.org/docs/themes/routing/#redirects',
redirectsRegister: 'Could not register custom redirects.'
};
@ -78,13 +78,9 @@ const parseRedirectsFile = (content, ext) => {
});
}
// yaml.load passes almost every yaml code.
// Because of that, it's hard to detect if there's an error in the file.
// But one of the obvious errors is the plain string output.
// Here we check if the user made this mistake.
if (typeof configYaml === 'string') {
if (typeof configYaml !== 'object' || configYaml === null) {
throw new errors.BadRequestError({
message: tpl(messages.yamlPlainString),
message: tpl(messages.yamlInvalid),
help: tpl(messages.redirectsHelp)
});
}

15
ghost/core/test/unit/server/services/custom-redirects/api.test.js
View file

@ -116,7 +116,20 @@ describe('UNIT: redirects CustomRedirectsAPI class', function () {
should.fail('setFromFilePath did not throw');
} catch (err) {
should.exist(err);
err.message.should.eql('YAML input cannot be a plain string. Check the format of your YAML file.');
err.message.should.eql('YAML input is invalid. Check the contents of your YAML file.');
}
});
it('throws a syntax error when setting invalid (empty) YAML redirects file', async function () {
const invalidFilePath = path.join(__dirname, '/invalid/redirects/yaml.json');
fs.readFile.withArgs(invalidFilePath, 'utf-8').resolves('');
try {
await customRedirectsAPI.setFromFilePath(invalidFilePath, '.yaml');
should.fail('setFromFilePath did not throw');
} catch (err) {
should.exist(err);
err.message.should.eql('YAML input is invalid. Check the contents of your YAML file.');
}
});