text: /**
   * Author......: Jens Steube <jens.steube@gmail.com>
   * License.....: MIT
   */
  
  #ifndef CPU_RULES_H
  #define CPU_RULES_H
  
  #include <common.h>
  #include "rp_cpu.h"
  
  #define BLOCK_SIZE               64
  #define RULE_RC_REJECT_ERROR     -2
  #define RP_RULE_BUFSIZ        0x100
  #define RULE_RC_SYNTAX_ERROR     -1
  
  typedef struct
  {
    uint cmds[256];
  
  } kernel_rule_t;
  
  int mangle_lrest (char arr[BLOCK_SIZE], int arr_len);
  int mangle_urest (char arr[BLOCK_SIZE], int arr_len);
  int mangle_trest (char arr[BLOCK_SIZE], int arr_len);
  int mangle_reverse (char arr[BLOCK_SIZE], int arr_len);
  int mangle_double (char arr[BLOCK_SIZE], int arr_len);
  int mangle_double_times (char arr[BLOCK_SIZE], int arr_len, int times);
  int mangle_reflect (char arr[BLOCK_SIZE], int arr_len);
  int mangle_rotate_left (char arr[BLOCK_SIZE], int arr_len);
  int mangle_rotate_right (char arr[BLOCK_SIZE], int arr_len);
  int mangle_append (char arr[BLOCK_SIZE], int arr_len, char c);
  int mangle_prepend (char arr[BLOCK_SIZE], int arr_len, char c);
  int mangle_delete_at (char arr[BLOCK_SIZE], int arr_len, int upos);
  int mangle_extract (char arr[BLOCK_SIZE], int arr_len, int upos, int ulen);
  int mangle_omit (char arr[BLOCK_SIZE], int arr_len, int upos, int ulen);
  int mangle_insert (char arr[BLOCK_SIZE], int arr_len, int upos, char c);
  int mangle_insert_multi (char arr[BLOCK_SIZE], int arr_len, int arr_pos, char arr2[BLOCK_SIZE], int arr2_len, int arr2_pos, int arr2_cpy);
  int mangle_overstrike (char arr[BLOCK_SIZE], int arr_len, int upos, char c);
  int mangle_truncate_at (char arr[BLOCK_SIZE], int arr_len, int upos);
  int mangle_replace (char arr[BLOCK_SIZE], int arr_len, char oldc, char newc);
  int mangle_purgechar (char arr[BLOCK_SIZE], int arr_len, char c);
  int mangle_dupeblock_prepend (char arr[BLOCK_SIZE], int arr_len, int ulen);
  int mangle_dupeblock_append (char arr[BLOCK_SIZE], int arr_len, int ulen);
  int mangle_dupechar_at (char arr[BLOCK_SIZE], int arr_len, int upos, int ulen);
  int mangle_dupechar (char arr[BLOCK_SIZE], int arr_len);
  int mangle_switch_at_check (char arr[BLOCK_SIZE], int arr_len, int upos, int upos2);
  int mangle_switch_at (char arr[BLOCK_SIZE], int arr_len, int upos, int upos2);
  int mangle_chr_shiftl (u8 arr[BLOCK_SIZE], int arr_len, int upos);
  int mangle_chr_shiftr (u8 arr[BLOCK_SIZE], int arr_len, int upos);
  int mangle_chr_incr (u8 arr[BLOCK_SIZE], int arr_len, int upos);
  int mangle_chr_decr (u8 arr[BLOCK_SIZE], int arr_len, int upos);
  int mangle_title (char arr[BLOCK_SIZE], int arr_len);
  int generate_random_rule (char rule_buf[RP_RULE_BUFSIZ], u32 rp_gen_func_min, u32 rp_gen_func_max);
  int apply_rule_cpu (char *rule, int rule_len, char in[BLOCK_SIZE], int in_len, char out[BLOCK_SIZE]);
  int cpu_rule_to_kernel_rule (char rule_buf[BUFSIZ], uint rule_len, kernel_rule_t *rule);
  
  bool class_num (char c);
  bool class_lower (char c);
  bool class_upper (char c);
  bool class_alpha (char c);
  
  char conv_ctoi (char c);
  char conv_itoc (char c);
  
  uint get_random_num (uint min, uint max);
  
  void gen_cmask (const u8 *word, u8 *cmask, const uint len);
  
  #endif
  