parse228(resp)
private
handler for response code 228 (Entering Long Passive Mode)
Returns host and port.
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def parse228(resp)
if resp[0, 3] != "228"
raise FTPReplyError, resp
end
left = resp.index("(")
right = resp.index(")")
if left == nil or right == nil
raise FTPProtoError, resp
end
numbers = resp[left + 1 .. right - 1].split(",")
if numbers[0] == "4"
if numbers.length != 9 || numbers[1] != "4" || numbers[2 + 4] != "2"
raise FTPProtoError, resp
end
host = numbers[2, 4].join(".")
port = (numbers[7].to_i << 8) + numbers[8].to_i
elsif numbers[0] == "6"
if numbers.length != 21 || numbers[1] != "16" || numbers[2 + 16] != "2"
raise FTPProtoError, resp
end
v6 = ["", "", "", "", "", "", "", ""]
for i in 0 .. 7
v6[i] = sprintf("%02x%02x", numbers[(i * 2) + 2].to_i,
numbers[(i * 2) + 3].to_i)
end
host = v6[0, 8].join(":")
port = (numbers[19].to_i << 8) + numbers[20].to_i
end
return host, port
end