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Allow class attributes in sanitized html for emails

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This commit is contained in:
eikek 2022-11-07 09:37:16 +01:00
parent df75fbddcd
commit 91849e5513
2 changed files with 136 additions and 1 deletions
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4
modules/joex/src/main/scala/docspell/joex/extract/JsoupSanitizer.scala
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@ -13,9 +13,11 @@ import emil.jsoup._
import scodec.bits.ByteVector
object JsoupSanitizer {
private val whitelist =
EmailWhitelist.default.addAttributes(":all", "class")
private val change =
BodyClean.whitelistClean(EmailWhitelist.default)
BodyClean.whitelistClean(whitelist)
def clean(html: String): String =
BodyClean.modifyContent(change)(BodyContent(html)).asString

133
modules/joex/src/test/scala/docspell/joex/extract/JsoupSanitizerTest.scala Normal file
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@ -0,0 +1,133 @@
/*
* Copyright 2020 Eike K. & Contributors
*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
package docspell.joex.extract
import java.nio.charset.StandardCharsets
import munit.FunSuite
import org.jsoup.Jsoup
class JsoupSanitizerTest extends FunSuite {
test("keep interesting tags and attributes") {
val cleaned = JsoupSanitizer.clean(html)
val doc = Jsoup.parse(cleaned)
assertEquals(doc.head().getElementsByTag("link").size(), 1)
assertEquals(doc.head().getElementsByTag("style").size(), 1)
assertEquals(doc.charset(), StandardCharsets.UTF_8)
assertEquals(doc.head().select("meta[charset]").attr("charset").toUpperCase, "UTF-8")
assert(doc.select("*[class]").size() > 0)
assert(doc.select("*[style]").size() > 0)
}
def html =
"""
|<!DOCTYPE html>
|<html lang="en">
| <head>
| <meta charset="utf-8" />
| <meta name="viewport" content="width=device-width, initial-scale=1" />
| <title>A simple, clean, and responsive HTML invoice template</title>
| <link rel="icon" href="./images/favicon.png" type="image/x-icon" />
| <style>
| body {
| font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif;
| }
| body h1 {
| font-weight: 300;
| }
| body h3 {
| font-weight: 300;
| margin-top: 10px;
| color: #555;
| }
| body a {
| color: #06f;
| }
| .invoice-box {
| max-width: 800px;
| margin: auto;
| padding: 30px;
| border: 1px solid #eee;
| box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
| font-size: 16px;
| line-height: 24px;
| font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif;
| color: #555;
| }
| </style>
| </head>
| <body>
| <h1>Some html template for an invoice</h1>
| <h3>It is something simple.</h3>
| <div class="invoice-box">
| <table>
| <tr class="top">
| <td colspan="2">
| <table>
| <tr>
| <td class="title">
| <img src="./images/logo.png" alt="Company logo" style="width: 100%; max-width: 300px" />
| </td>
| <td>
| Invoice #: 123<br />
| Created: January 1, 2015<br />
| Due: February 1, 2015
| </td>
| </tr>
| </table>
| </td>
| </tr>
| <tr class="information">
| <td colspan="2">
| <table style="color: black;">
| <tr>
| <td>
| Company, Inc.<br />
| 456 Rosewood Road<br />
| Flowerville, MI 12345
| </td>
| <td>
| Acme Corp.<br />
| John Doe<br />
| john@example.com
| </td>
| </tr>
| </table>
| </td>
| </tr>
| <tr class="heading">
| <td>Payment Method</td>
| <td>Check #</td>
| </tr>
| <tr class="details">
| <td>Check</td>
| <td>1000</td>
| </tr>
| <tr class="heading">
| <td>Item</td>
| <td>Price</td>
| </tr>
| <tr class="item">
| <td>Website design</td>
| <td>$300.00</td>
| </tr>
| <tr class="item last">
| <td>Domain name (1 year)</td>
| <td>$10.00</td>
| </tr>
| <tr class="total">
| <td></td>
| <td>Total: $385.00</td>
| </tr>
| </table>
| </div>
| </body>
|</html>
|""".stripMargin
}