discourse/lib/freedom_patches/safe_buffer.rb

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# For some reason safe buffer is getting invalid encoding in some cases
# we work around the issue and log the problems
#
# The alternative is a broken website when this happens
class ActiveSupport::SafeBuffer
def concat(value, raise_encoding_err=false)
if !html_safe? || value.html_safe?
super(value)
else
super(ERB::Util.h(value))
end
rescue Encoding::CompatibilityError
if raise_encoding_err
raise
else
unless encoding == Encoding::UTF_8
self.force_encoding("UTF-8")
unless valid_encoding?
encode!("utf-16","utf-8",:invalid => :replace)
encode!("utf-8","utf-16")
end
Rails.logger.warn("Encountered a non UTF-8 string in SafeBuffer - #{self}")
end
unless value.encoding == Encoding::UTF_8
value = value.dup.force_encoding("UTF-8").scrub
Rails.logger.warn("Attempted to concat a non UTF-8 string in SafeBuffer - #{value}")
end
concat(value,_raise=true)
end
end
alias << concat
end