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|
# frozen_string_literal: true
module Net
class IMAP < Protocol
private
def validate_data(data)
case data
when nil
when String
when Integer
NumValidator.ensure_number(data)
when Array
if data[0] == 'CHANGEDSINCE'
NumValidator.ensure_mod_sequence_value(data[1])
else
data.each do |i|
validate_data(i)
end
end
when Time
when Symbol
else
data.validate
end
end
def send_data(data, tag = nil)
case data
when nil
put_string("NIL")
when String
send_string_data(data, tag)
when Integer
send_number_data(data)
when Array
send_list_data(data, tag)
when Time
send_time_data(data)
when Symbol
send_symbol_data(data)
else
data.send_data(self, tag)
end
end
def send_string_data(str, tag = nil)
case str
when ""
put_string('""')
when /[\x80-\xff\r\n]/n
# literal
send_literal(str, tag)
when /[(){ \x00-\x1f\x7f%*"\\]/n
# quoted string
send_quoted_string(str)
else
put_string(str)
end
end
def send_quoted_string(str)
put_string('"' + str.gsub(/["\\]/n, "\\\\\\&") + '"')
end
def send_literal(str, tag = nil)
synchronize do
put_string("{" + str.bytesize.to_s + "}" + CRLF)
@continued_command_tag = tag
@continuation_request_exception = nil
begin
@continuation_request_arrival.wait
e = @continuation_request_exception || @exception
raise e if e
put_string(str)
ensure
@continued_command_tag = nil
@continuation_request_exception = nil
end
end
end
def send_number_data(num)
put_string(num.to_s)
end
def send_list_data(list, tag = nil)
put_string("(")
first = true
list.each do |i|
if first
first = false
else
put_string(" ")
end
send_data(i, tag)
end
put_string(")")
end
DATE_MONTH = %w(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec)
def send_time_data(time)
t = time.dup.gmtime
s = format('"%2d-%3s-%4d %02d:%02d:%02d +0000"',
t.day, DATE_MONTH[t.month - 1], t.year,
t.hour, t.min, t.sec)
put_string(s)
end
def send_symbol_data(symbol)
put_string("\\" + symbol.to_s)
end
class RawData # :nodoc:
def send_data(imap, tag)
imap.__send__(:put_string, @data)
end
def validate
end
private
def initialize(data)
@data = data
end
end
class Atom # :nodoc:
def send_data(imap, tag)
imap.__send__(:put_string, @data)
end
def validate
end
private
def initialize(data)
@data = data
end
end
class QuotedString # :nodoc:
def send_data(imap, tag)
imap.__send__(:send_quoted_string, @data)
end
def validate
end
private
def initialize(data)
@data = data
end
end
class Literal # :nodoc:
def send_data(imap, tag)
imap.__send__(:send_literal, @data, tag)
end
def validate
end
private
def initialize(data)
@data = data
end
end
class MessageSet # :nodoc:
def send_data(imap, tag)
imap.__send__(:put_string, format_internal(@data))
end
def validate
validate_internal(@data)
end
private
def initialize(data)
@data = data
end
def format_internal(data)
case data
when "*"
return data
when Integer
if data == -1
return "*"
else
return data.to_s
end
when Range
return format_internal(data.first) +
":" + format_internal(data.last)
when Array
return data.collect {|i| format_internal(i)}.join(",")
when ThreadMember
return data.seqno.to_s +
":" + data.children.collect {|i| format_internal(i).join(",")}
end
end
def validate_internal(data)
case data
when "*"
when Integer
NumValidator.ensure_nz_number(data)
when Range
when Array
data.each do |i|
validate_internal(i)
end
when ThreadMember
data.children.each do |i|
validate_internal(i)
end
else
raise DataFormatError, data.inspect
end
end
end
class ClientID # :nodoc:
def send_data(imap, tag)
imap.__send__(:send_data, format_internal(@data), tag)
end
def validate
validate_internal(@data)
end
private
def initialize(data)
@data = data
end
def validate_internal(client_id)
client_id.to_h.each do |k,v|
unless StringFormatter.valid_string?(k)
raise DataFormatError, client_id.inspect
end
end
rescue NoMethodError, TypeError # to_h failed
raise DataFormatError, client_id.inspect
end
def format_internal(client_id)
return nil if client_id.nil?
client_id.to_h.flat_map {|k,v|
[StringFormatter.string(k), StringFormatter.nstring(v)]
}
end
end
module StringFormatter
LITERAL_REGEX = /[\x80-\xff\r\n]/n
module_function
# Allows symbols in addition to strings
def valid_string?(str)
str.is_a?(Symbol) || str.respond_to?(:to_str)
end
# Allows nil, symbols, and strings
def valid_nstring?(str)
str.nil? || valid_string?(str)
end
# coerces using +to_s+
def string(str)
str = str.to_s
if str =~ LITERAL_REGEX
Literal.new(str)
else
QuotedString.new(str)
end
end
# coerces non-nil using +to_s+
def nstring(str)
str.nil? ? nil : string(str)
end
end
end
end
|
