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283b08d45f
* Move onebox gem in core library * Update template file path * Remove warning for onebox gem caching * Remove onebox version file * Remove onebox gem * Add sanitize gem * Require onebox library in lazy-yt plugin * Remove onebox web specific code This code was used in standalone onebox Sinatra application * Merge Discourse specific AllowlistedGenericOnebox engine in core * Fix onebox engine filenames to match class name casing * Move onebox specs from gem into core * DEV: Rename `response` helper to `onebox_response` Fixes a naming collision. * Require rails_helper * Don't use `before/after(:all)` * Whitespace * Remove fakeweb * Remove poor unit tests * DEV: Re-add fakeweb, plugins are using it * Move onebox helpers * Stub Instagram API * FIX: Follow additional redirect status codes (#476) Don’t throw errors if we encounter 303, 307 or 308 HTTP status codes in responses * Remove an empty file * DEV: Update the license file Using the copy from https://choosealicense.com/licenses/gpl-2.0/# Hopefully this will enable GitHub to show the license UI? * DEV: Update embedded copyrights * DEV: Add Onebox copyright notice * DEV: Add MIT license, convert COPYRIGHT.txt to md * DEV: Remove an incorrect copyright claim Co-authored-by: Jarek Radosz <jradosz@gmail.com> Co-authored-by: jbrw <jamie@goatforce5.org>
97 lines
2.3 KiB
Ruby
97 lines
2.3 KiB
Ruby
# frozen_string_literal: true
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module Onebox
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class Preview
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# see https://bugs.ruby-lang.org/issues/14688
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client_exception = defined?(Net::HTTPClientException) ? Net::HTTPClientException : Net::HTTPServerException
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WEB_EXCEPTIONS ||= [client_exception, OpenURI::HTTPError, Timeout::Error, Net::HTTPError, Errno::ECONNREFUSED]
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def initialize(url, options = Onebox.options)
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@url = url
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@options = options.dup
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allowed_origins = @options[:allowed_iframe_origins] || Onebox::Engine.all_iframe_origins
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@options[:allowed_iframe_regexes] = Engine.origins_to_regexes(allowed_origins)
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@engine_class = Matcher.new(@url, @options).oneboxed
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end
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def to_s
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return "" unless engine
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sanitize process_html engine_html
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rescue *WEB_EXCEPTIONS
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""
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end
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def placeholder_html
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return "" unless engine
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sanitize process_html engine.placeholder_html
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rescue *WEB_EXCEPTIONS
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""
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end
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def errors
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return {} unless engine
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engine.errors
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end
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def data
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return {} unless engine
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engine.data
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end
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def options
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OpenStruct.new(@options)
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end
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private
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def engine_html
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engine.to_html
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end
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def process_html(html)
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return "" unless html
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if @options[:max_width]
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doc = Nokogiri::HTML5::fragment(html)
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if doc
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doc.css('[width]').each do |e|
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width = e['width'].to_i
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if width > @options[:max_width]
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height = e['height'].to_i
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if (height > 0)
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ratio = (height.to_f / width.to_f)
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e['height'] = (@options[:max_width] * ratio).floor
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end
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e['width'] = @options[:max_width]
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end
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end
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return doc.to_html
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end
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end
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html
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end
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def sanitize(html)
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config = @options[:sanitize_config] || Sanitize::Config::ONEBOX
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config = config.merge(allowed_iframe_regexes: @options[:allowed_iframe_regexes])
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Sanitize.fragment(html, config)
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end
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def engine
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return nil unless @engine_class
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return @engine if defined?(@engine)
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@engine = @engine_class.new(@url)
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@engine.options = @options
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@engine
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end
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class InvalidURI < StandardError; end
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end
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end
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