Class: Msf::Auxiliary::Redis::RESPParser
- Inherits:
-
Object
- Object
- Msf::Auxiliary::Redis::RESPParser
- Defined in:
- lib/msf/core/auxiliary/redis.rb
Constant Summary collapse
- LINE_BREAK =
"\r\n"
Instance Method Summary collapse
- #data_at_counter ⇒ Object
-
#initialize(data) ⇒ RESPParser
constructor
A new instance of RESPParser.
- #parse ⇒ Object
- #parse_bulk_string ⇒ Object
- #parse_next ⇒ Object
- #parse_resp_array ⇒ Object
- #parse_simple_string ⇒ Object
Constructor Details
#initialize(data) ⇒ RESPParser
Returns a new instance of RESPParser.
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# File 'lib/msf/core/auxiliary/redis.rb', line 110 def initialize(data) @raw_data = data @counter = 0 end |
Instance Method Details
#data_at_counter ⇒ Object
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# File 'lib/msf/core/auxiliary/redis.rb', line 120 def data_at_counter @raw_data[@counter..-1] end |
#parse ⇒ Object
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# File 'lib/msf/core/auxiliary/redis.rb', line 115 def parse @counter = 0 parse_next end |
#parse_bulk_string ⇒ Object
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# File 'lib/msf/core/auxiliary/redis.rb', line 155 def parse_bulk_string unless /\A\$(?<str_len>[-\d]+)(\r|$)/ =~ data_at_counter raise "RESP parsing error in bulk string" end @counter += (1 + str_len.length) str_len = str_len.to_i if data_at_counter.start_with?(LINE_BREAK) @counter += LINE_BREAK.length end result = nil if str_len != -1 result = data_at_counter[0..str_len - 1] @counter += str_len @counter += 2 # Skip over next CLRF end result end |
#parse_next ⇒ Object
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# File 'lib/msf/core/auxiliary/redis.rb', line 177 def parse_next case data_at_counter[0] when "*" parse_resp_array when "+" parse_simple_string when "$" parse_bulk_string else raise "RESP parsing error: " + data_at_counter end end |
#parse_resp_array ⇒ Object
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# File 'lib/msf/core/auxiliary/redis.rb', line 124 def parse_resp_array # Read array length unless /\A\*(?<arr_len>\d+)(\r|$)/ =~ data_at_counter raise "RESP parsing error in array" end @counter += (1 + arr_len.length) if data_at_counter.start_with?(LINE_BREAK) @counter += LINE_BREAK.length end arr_len = arr_len.to_i result = [] for index in 1..arr_len do element = parse_next result.append(element) end result end |
#parse_simple_string ⇒ Object
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# File 'lib/msf/core/auxiliary/redis.rb', line 146 def parse_simple_string str_end = data_at_counter.index(LINE_BREAK) str_end = str_end.to_i result = data_at_counter[1..str_end - 1] @counter += str_end @counter += 2 # Skip over next CLRF result end |