Revision 3d444084
Added by Marc Dequènes almost 16 years ago
- ID 3d4440844dbef4fedc839d7d9cb0408ab5cc94bd
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include ActionMailer::Quoting
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include ActionMailer::Utils
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MAX_DRIFT_TIME = 600
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def initialize(msg = nil)
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@config = Config.instance
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| ... | ... | |
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else
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logger.info "Mail is from user #{user.uid} (#{user.cn})"
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signed_content = pgp_signed_part()
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if signed_content.multipart?
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if signed_content.parts[0].content_type == "text/plain"
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command_txt = signed_content.parts[0].body
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refs = signed_content.parts.collect{|p| p.dup }
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drift = Time.new.to_i - sig_check.timestamp.to_i
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logger.debug "Signature drift time: #{drift}"
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if drift > 0 and drift < MAX_DRIFT_TIME
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signed_content = pgp_signed_part()
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if signed_content.multipart?
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if signed_content.parts[0].content_type == "text/plain"
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command_txt = signed_content.parts[0].body
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refs = signed_content.parts.collect{|p| p.dup }
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end
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else
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command_txt = signed_content.body if signed_content.content_type == "text/plain"
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refs = []
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end
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else
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command_txt = signed_content.body if signed_content.content_type == "text/plain"
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refs = []
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end
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if command_txt
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commands = []
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command_txt.each_line do |line|
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line.chomp!
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sline = line.strip
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# skip empty lines and comments
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next if sline == "" or sline[0, 1] == "#"
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# stop processing when detecting message signature
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break if line == "-- "
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commands << sline
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if command_txt
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commands = []
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command_txt.each_line do |line|
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line.chomp!
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sline = line.strip
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# skip empty lines and comments
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next if sline == "" or sline[0, 1] == "#"
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# stop processing when detecting message signature
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break if line == "-- "
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commands << sline
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end
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logger.debug "Mail OK"
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order = {:ok => true, :user => user, :commands => commands, :refs => refs}
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else
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order[:user] = user
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logger.info "Mail does not contain a proper MIME part for commands"
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end
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order = {:ok => true, :user => user, :commands => commands, :refs => refs}
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else
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logger.info "Mail does not contain a proper MIME part for commands"
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logger.info "Mail rejected as it may be a replay (signature timestamp is too old)"
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order = {:ok => false, :user => user, :msg => "The signature was made too long ago (perhaps your system clock is not up-to-date). Rejected message to avoid replay attacks."}
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end
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end
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else
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Also available in: Unified diff
[evol] check if signature timestamp is not too old or reject it (first part of the replay protection)