Module: Obscure

Defined in:
lib/codeobscure/obscure.rb

Constant Summary collapse

@@TABLENAME = 
"symbols"
@@SYMBOL_DB_FILE = 
"symbols"
@@STRING_SYMBOL_FILE = 
"func.list"

Class Method Summary collapse

Class Method Details

.createTable ⇒ Object

维护数据库方便日后作排重



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# File 'lib/codeobscure/obscure.rb', line 17

def self.createTable  
  if !File.exist? @@SYMBOL_DB_FILE
    `echo "create table #{@@TABLENAME}(src text, des text,PRIMARY KEY (src));" | sqlite3 #{@@SYMBOL_DB_FILE}` 
  end 
end

.insertValue(line, ramdom) ⇒ Object 



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# File 'lib/codeobscure/obscure.rb', line 23

def self.insertValue(line,ramdom)  
  `echo "insert or ignore into #{@@TABLENAME} values('#{line}' ,'#{ramdom}');" | sqlite3 #{@@SYMBOL_DB_FILE}`
end

.query(line) ⇒ Object 



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# File 'lib/codeobscure/obscure.rb', line 27

def self.query(line) 
  `echo "select * from #{@@TABLENAME} where src='#{line}';" | sqlite3 #{@@SYMBOL_DB_FILE}`
end

.ramdomString ⇒ Object 



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# File 'lib/codeobscure/obscure.rb', line 31

def self.ramdomString  
  `openssl rand -base64 64 | tr -cd 'a-zA-Z' |head -c 16`
end

.run(root_dir) ⇒ Object

有define重复的问题等待解决



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# File 'lib/codeobscure/obscure.rb', line 36

def self.run(root_dir)

  @@HEAD_FILE="#{root_dir}/codeObfuscation.h"  
  @@SYMBOL_DB_FILE = "#{root_dir}/#{@@SYMBOL_DB_FILE}" 
  @@STRING_SYMBOL_FILE = "#{root_dir}/#{@@STRING_SYMBOL_FILE}"
  
  if File.exist? @@SYMBOL_DB_FILE
    `rm -f #{@@SYMBOL_DB_FILE}`
  end 
  if File.exists? @@HEAD_FILE 
    `rm -f #{@@HEAD_FILE}` 
  end 
  createTable  
    
  date = `date`
  file = File.new @@HEAD_FILE , 'w'
  file.puts "#ifndef co_codeObfuscation_h" 
  file.puts "#define co_codeObfuscation_h" 
  file.puts "//confuse string at #{date.to_s}"

  symbol_file = File.open(@@STRING_SYMBOL_FILE).read
  symbol_file.each_line do |line|
    line_type = line.rstrip.split(":").first
    line_content = line.rstrip.split(":").last
    result = FiltSymbols.query(line_content) 
    if result.nil? || result.empty? 
      ramdom = ramdomString
      insertValue line_content  , ramdom  
      if line_type == "p"
        result = FiltSymbols.query("set#{line_content.upcase_first_letter}") 
        if result.nil? || result.empty? 
          file.puts "#define #{line_content} #{ramdom}"
          file.puts "#define _#{line_content} _#{ramdom}"
          file.puts "#define set#{line_content.upcase_first_letter} set#{ramdom.upcase_first_letter}"
        end
      else 
        file.puts "#define #{line_content} #{ramdom}"
      end
    end 
  end

  file.puts "#endif" 
  file.close

  `sqlite3 #{@@SYMBOL_DB_FILE} .dump`  
  if File.exist? @@SYMBOL_DB_FILE
    `rm -f #{@@SYMBOL_DB_FILE}`
  end
  if File.exist? @@STRING_SYMBOL_FILE
    `rm -f #{@@STRING_SYMBOL_FILE}`
  end
  @@HEAD_FILE
end