diff options
Diffstat (limited to 'lib/mail_handler/backends/mail_extensions.rb')
| -rw-r--r-- | lib/mail_handler/backends/mail_extensions.rb | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/lib/mail_handler/backends/mail_extensions.rb b/lib/mail_handler/backends/mail_extensions.rb index f756abd1a..322c49bb5 100644 --- a/lib/mail_handler/backends/mail_extensions.rb +++ b/lib/mail_handler/backends/mail_extensions.rb @@ -64,4 +64,68 @@ module Mail end.join(";\r\n\s") end end -end
\ No newline at end of file + + # HACK: Backport encoding fixes for Ruby 1.8 from Mail 2.5 + # Can be removed when we no longer support Ruby 1.8 + class Ruby18 + def Ruby18.b_value_decode(str) + match = str.match(/\=\?(.+)?\?[Bb]\?(.+)?\?\=/m) + if match + encoding = match[1] + str = Ruby18.decode_base64(match[2]) + # Adding and removing trailing spaces is a workaround + # for Iconv.conv throwing an exception if it finds an + # invalid character at the end of the string, even + # with UTF-8//IGNORE: + # http://po-ru.com/diary/fixing-invalid-utf-8-in-ruby-revisited/ + str = Iconv.conv('UTF-8//IGNORE', fix_encoding(encoding), str + " ")[0...-4] + end + str + end + + def Ruby18.q_value_decode(str) + match = str.match(/\=\?(.+)?\?[Qq]\?(.+)?\?\=/m) + if match + encoding = match[1] + string = match[2].gsub(/_/, '=20') + # Remove trailing = if it exists in a Q encoding + string = string.sub(/\=$/, '') + str = Encodings::QuotedPrintable.decode(string) + # Adding and removing trailing spaces is a workaround + # for Iconv.conv throwing an exception if it finds an + # invalid character at the end of the string, even + # with UTF-8//IGNORE: + # http://po-ru.com/diary/fixing-invalid-utf-8-in-ruby-revisited/ + str = Iconv.conv('UTF-8//IGNORE', fix_encoding(encoding), str + " ")[0...-4] + end + str + end + + private + + def Ruby18.fix_encoding(encoding) + case encoding.upcase + when 'UTF8' + 'UTF-8' + else + encoding + end + end + end + class Ruby19 + + def Ruby19.q_value_decode(str) + match = str.match(/\=\?(.+)?\?[Qq]\?(.+)?\?\=/m) + if match + encoding = match[1] + str = Encodings::QuotedPrintable.decode(match[2].gsub(/_/, '=20')) + # Backport line from mail 2.5 to strip a trailing = character + # Remove trailing = if it exists in a Q encoding + str = str.sub(/\=$/, '') + str.force_encoding(fix_encoding(encoding)) + end + decoded = str.encode("utf-8", :invalid => :replace, :replace => "") + decoded.valid_encoding? ? decoded : decoded.encode("utf-16le", :invalid => :replace, :replace => "").encode("utf-8") + end + end +end |