mirror of
https://github.com/Foltik/Shimapan
synced 2024-11-15 09:08:06 -05:00
40 lines
1.7 KiB
JavaScript
40 lines
1.7 KiB
JavaScript
const sanitizer = require('sanitizer');
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// Verifies a single property is well formed
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const verifyProp = (prop, expected) => new Promise((resolve, reject) => {
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if (!expected.optional && !prop)
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return reject({code: 400, message: expected.name + ' not specified.'});
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if (prop && expected.type && typeof prop !== expected.type)
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return reject({code: 400, message: expected.name + ' malformed.'});
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if (prop && expected.instance && !(prop instanceof expected.instance))
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return reject({code: 400, message: expected.name + ' malformed.'});
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if (prop && expected.maxLength && prop.length > expected.maxLength)
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return reject({code: 400, message: expected.name + ' too long.'});
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if (prop && expected.sanitize && sanitizer.sanitize(prop) !== prop)
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return reject({code: 400, message: expected.name + ' contains invalid characters.'});
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if (prop && expected.restrict && prop.replace(expected.restrict, '') !== prop)
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return reject({code: 400, message: expected.name + ' contains invalid characters.'});
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resolve();
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});
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// Verifies the entire request body is well formed
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// expectedProps follows the format:
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// [{name: 'myList', instance: 'Array'}, {name: 'myVar', type: 'string', optional: true}, etc.]
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const verifyBody = (body, expectedProps) =>
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Promise.all(expectedProps.map(expected => verifyProp(body[expected.name], expected)));
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const bodyVerifier = expectedProps =>
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(req, res, next) => {
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verifyBody(req.body, expectedProps)
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.then(() => next())
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.catch(err => res.status(err.code).json({message: err.message}));
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};
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exports.verifyBody = verifyBody;
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exports.bodyVerifier = bodyVerifier; |