44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
package responsemodifiers
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import (
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_ "embed"
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"strings"
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"github.com/everywall/ladder/proxychain/responsemodifiers/rewriters"
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"github.com/everywall/ladder/proxychain"
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)
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//go:embed vendor/block_element_removal.js
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var blockElementRemoval string
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// BlockElementRemoval prevents paywall javascript from removing a
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// particular element by detecting the removal, then immediately reinserting it.
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// This is useful when a page will return a "fake" 404, after flashing the content briefly.
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// If the /outline/ API works, but the regular API doesn't, try this modifier.
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func BlockElementRemoval(cssSelector string) proxychain.ResponseModification {
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return func(chain *proxychain.ProxyChain) error {
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// don't add rewriter if it's not even html
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ct := chain.Response.Header.Get("content-type")
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if !strings.HasPrefix(ct, "text/html") {
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return nil
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}
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params := map[string]string{
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// ie: "div.article-content"
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"{{CSS_SELECTOR}}": cssSelector,
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}
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rr := rewriters.NewScriptInjectorRewriterWithParams(
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blockElementRemoval,
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rewriters.BeforeDOMContentLoaded,
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params,
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)
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htmlRewriter := rewriters.NewHTMLRewriter(chain.Response.Body, rr)
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chain.Response.Body = htmlRewriter
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return nil
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}
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}
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