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fix: external link ignore mailto: & javascript: #3812

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merged 4 commits into from
Oct 28, 2019
Merged

fix: external link ignore mailto: & javascript: #3812

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9ff66ed
fix: external link ignore mailto: & javascript:
SukkaW Oct 27, 2019
3222513
refactor: use startsWith instead of regex
SukkaW Oct 27, 2019
ab23935
refactor(external_link): use whatwg url
SukkaW Oct 28, 2019
ec465a5
fix(external_link): handle whatwg url api
SukkaW Oct 28, 2019
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2 changes: 1 addition & 1 deletion lib/plugins/filter/after_post_render/external_link.js
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@ function externalLinkFilter(data) {
config.external_link.field !== 'post') return;

data.content = data.content.replace(/<a.*?(href=['"](.*?)['"]).*?>/gi, (str, hrefStr, href) => {
if (/target=/gi.test(str) || !isExternal(href, config)) return str;
if (/target=/gi.test(str) || href.startsWith('mailto:') || href.startsWith('javascript:') || !isExternal(href, config)) return str;
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there are countless of types (data:, vbscript: and so on), can test whether it's a link protocol (http/ftp) or not by testing whether URL(href).origin is null. See encodeURL().

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@SukkaW SukkaW Oct 28, 2019 •
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OK, I will change to that.

It required WHATWG URL API. I might mitgate external_link filter to use it in this PR.


if (/rel=/gi.test(str)) {
str = str.replace(/rel="(.*?)"/gi, (relStr, rel) => {
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32 changes: 20 additions & 12 deletions test/scripts/filters/external_link.js
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Expand Up @@ -208,23 +208,27 @@ describe('External link - post', () => {
'# External link test',
'1. External link',
'<a href="https://hexo.io/">Hexo</a>',
'2. External link with "rel" Attribute',
'2. Link with hash (#), mailto: , javascript: shouldn\'t be processed',
'<a href="#top">Hexo</a>',
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👍

'<a href="mailto:[email protected]">Hexo</a>',
'<a href="javascript:alert(\'Hexo is awesome!\');">Hexo</a>',
'3. External link with "rel" Attribute',
'<a rel="external" href="https://hexo.io/">Hexo</a>',
'<a href="https://hexo.io/" rel="external">Hexo</a>',
'<a rel="noopenner" href="https://hexo.io/">Hexo</a>',
'<a href="https://hexo.io/" rel="noopenner">Hexo</a>',
'<a rel="external noopenner" href="https://hexo.io/">Hexo</a>',
'<a href="https://hexo.io/" rel="external noopenner">Hexo</a>',
'3. External link with Other Attributes',
'4. External link with Other Attributes',
'<a class="img" href="https://hexo.io/">Hexo</a>',
'<a href="https://hexo.io/" class="img">Hexo</a>',
'4. Internal link',
'5. Internal link',
'<a href="/archives/foo.html">Link</a>',
'5. Ignore links have "target" attribute',
'6. Ignore links have "target" attribute',
'<a href="https://hexo.io/" target="_blank">Hexo</a>',
'6. Ignore links don\'t have "href" attribute',
'7. Ignore links don\'t have "href" attribute',
'<a>Anchor</a>',
'7. Ignore links whose hostname is same as config',
'8. Ignore links whose hostname is same as config',
'<a href="https://example.com">Example Domain</a>'
].join('\n');

Expand All @@ -235,23 +239,27 @@ describe('External link - post', () => {
'# External link test',
'1. External link',
'<a href="https://hexo.io/" target="_blank" rel="noopener">Hexo</a>',
'2. External link with "rel" Attribute',
'2. Link with hash (#), mailto: , javascript: shouldn\'t be processed',
'<a href="#top">Hexo</a>',
'<a href="mailto:[email protected]">Hexo</a>',
'<a href="javascript:alert(\'Hexo is awesome!\');">Hexo</a>',
'3. External link with "rel" Attribute',
'<a rel="external noopener" href="https://hexo.io/" target="_blank">Hexo</a>',
'<a href="https://hexo.io/" target="_blank" rel="external noopener">Hexo</a>',
'<a rel="noopenner" href="https://hexo.io/" target="_blank">Hexo</a>',
'<a href="https://hexo.io/" target="_blank" rel="noopenner">Hexo</a>',
'<a rel="external noopenner" href="https://hexo.io/" target="_blank">Hexo</a>',
'<a href="https://hexo.io/" target="_blank" rel="external noopenner">Hexo</a>',
'3. External link with Other Attributes',
'4. External link with Other Attributes',
'<a class="img" href="https://hexo.io/" target="_blank" rel="noopener">Hexo</a>',
'<a href="https://hexo.io/" target="_blank" rel="noopener" class="img">Hexo</a>',
'4. Internal link',
'5. Internal link',
'<a href="/archives/foo.html">Link</a>',
'5. Ignore links have "target" attribute',
'6. Ignore links have "target" attribute',
'<a href="https://hexo.io/" target="_blank">Hexo</a>',
'6. Ignore links don\'t have "href" attribute',
'7. Ignore links don\'t have "href" attribute',
'<a>Anchor</a>',
'7. Ignore links whose hostname is same as config',
'8. Ignore links whose hostname is same as config',
'<a href="https://example.com">Example Domain</a>'
].join('\n'));
});
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