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new validator: isMailtoURI, validate the mailto link URI format (#2188)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| import trim from './trim'; | ||
| import isEmail from './isEmail'; | ||
| import assertString from './util/assertString'; | ||
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| function parseMailtoQueryString(queryString) { | ||
| const allowedParams = new Set(['subject', 'body', 'cc', 'bcc']), | ||
| query = { cc: '', bcc: '' }; | ||
| let isParseFailed = false; | ||
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| const queryParams = queryString.split('&'); | ||
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| if (queryParams.length > 4) { | ||
| return false; | ||
| } | ||
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| for (const q of queryParams) { | ||
| const [key, value] = q.split('='); | ||
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| // checked for invalid and duplicated query params | ||
| if (key && !allowedParams.has(key)) { | ||
| isParseFailed = true; | ||
| break; | ||
| } | ||
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| if (value && (key === 'cc' || key === 'bcc')) { | ||
| query[key] = value; | ||
| } | ||
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| if (key) { | ||
| allowedParams.delete(key); | ||
| } | ||
| } | ||
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| return isParseFailed ? false : query; | ||
| } | ||
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| export default function isMailtoURI(url, options) { | ||
| assertString(url); | ||
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| if (url.indexOf('mailto:') !== 0) { | ||
| return false; | ||
| } | ||
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| const [to = '', queryString = ''] = url.replace('mailto:', '').split('?'); | ||
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| if (!to && !queryString) { | ||
| return true; | ||
| } | ||
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| const query = parseMailtoQueryString(queryString); | ||
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| if (!query) { | ||
| return false; | ||
| } | ||
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| return `${to},${query.cc},${query.bcc}` | ||
| .split(',') | ||
| .every((email) => { | ||
| email = trim(email, ' '); | ||
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| if (email) { | ||
| return isEmail(email, options); | ||
| } | ||
|
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| return true; | ||
| }); | ||
| } |
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