io.c File Reference

#include "io.h"
#include "common.h"
#include "crack.h"
#include "enigma.h"
#include "ngram.h"
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Functions
int	enigma_error_message (const char *func, const char *format,...)
	Print an error message to stderr.
int	enigma_load_config (Enigma *enigma, const char *s)
	Load an Enigma machine configuration from a string.
int	enigma_load_custom_reflector (EnigmaReflector *reflector, const char *alphabet, const char *name)
	Load a custom reflector alphabet from the given alphabet and name.
int	enigma_load_custom_rotor (EnigmaRotor *rotor, const char *alphabet, const char *name, int *notches, int numNotches)
	Load a custom rotor alphabet from the given alphabet, name, and notches.
int	enigma_load_ngrams (EnigmaCrackParams *cfg, const char *path)
	Load ngrams from a file.
int	enigma_load_plugboard_config (Enigma *enigma, const char *s)
	Load plugboard configuration from a string.
int	enigma_load_reflector_config (Enigma *enigma, const char *s)
	Load reflector configuration from a string.
int	enigma_load_rotor_config (Enigma *enigma, char *s)
	Load rotor configuration from a string.
int	enigma_load_rotor_positions (Enigma *enigma, const char *s)
	Load rotor starting positions from a string.
void	enigma_print_config (const Enigma *enigma, char *out)
	Print the current Enigma machine configuration to out.

Detailed Description

This file implements input/output functions.

Function Documentation

enigma_error_message()

int enigma_error_message	(	const char *	func,
		const char *	format,
			...
	)

Print an error message to stderr.

Parameters

func	Function name.
format	Format string.
...	Arguments for the format string.

Returns

ENIGMA_FAILURE.

enigma_load_config()

int enigma_load_config	(	Enigma *	enigma,
		const char *	s
	)

Load an Enigma machine configuration from a string.

The configuration string should be in the format: "ROTORS|POSITIONS|REFLECTOR|PLUGBOARD", where ROTORS is a space-separated list of rotor names, POSITIONS is a string of starting positions for each rotor, REFLECTOR is the reflector name, and PLUGBOARD is a string representing plugboard connections. If there is no plugboard, use "None".

Parameters

enigma	Pointer to the Enigma machine instance.
s	String representing the Enigma configuration.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_load_custom_reflector()

int enigma_load_custom_reflector	(	EnigmaReflector *	reflector,
		const char *	alphabet,
		const char *	name
	)

Load a custom reflector alphabet from the given alphabet and name.

Parameters

reflector	Pointer to the reflector structure to be populated.
alphabet	The custom reflector alphabet (must be 26 characters long).
name	The name of the custom reflector.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_load_custom_rotor()

int enigma_load_custom_rotor	(	EnigmaRotor *	rotor,
		const char *	alphabet,
		const char *	name,
		int *	notches,
		int	numNotches
	)

Load a custom rotor alphabet from the given alphabet, name, and notches.

Parameters

rotor	Pointer to the rotor structure to be populated.
alphabet	The custom rotor alphabet (must be 26 characters long).
name	The name of the custom rotor.
notches	Array of notch positions (length must match numNotches).
numNotches	Number of notches.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_load_ngrams()

int enigma_load_ngrams	(	EnigmaCrackParams *	cfg,
		const char *	path
	)

Load ngrams from a file.

The file should have the following format: First line: n charCount Subsequent lines: count ngram

Parameters

cfg	Pointer to the cracking configuration structure.
path	Path to the ngram file.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_load_plugboard_config()

int enigma_load_plugboard_config	(	Enigma *	enigma,
		const char *	s
	)

Load plugboard configuration from a string.

The string should contain non-separated pairs of characters representing the plugboard connections, e.g., "ABCDEF" means A<->B, C<->D, E<->F.

Parameters

enigma	Pointer to the Enigma machine instance.
s	String representing plugboard configuration.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_load_reflector_config()

int enigma_load_reflector_config	(	Enigma *	enigma,
		const char *	s
	)

Load reflector configuration from a string.

Parameters

enigma	Pointer to the Enigma machine instance.
s	String representing plugboard configuration.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_load_rotor_config()

int enigma_load_rotor_config	(	Enigma *	enigma,
		char *	s
	)

Load rotor configuration from a string.

Parameters

enigma	Pointer to the Enigma machine instance.
s	String representing rotor configuration.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_load_rotor_positions()

int enigma_load_rotor_positions	(	Enigma *	enigma,
		const char *	s
	)

Load rotor starting positions from a string.

This function expects a string of characters representing the initial positions of the rotors, e.g., "ABC" for three rotors. It sets the idx field of each rotor in the Enigma structure.

Parameters

enigma	Pointer to the Enigma machine instance.
s	String representing rotor starting positions.

Returns

ENIGMA_SUCCESS on success, ENIGMA_FAILURE on failure.

enigma_print_config()

void enigma_print_config	(	const Enigma *	enigma,
		char *	out
	)

Print the current Enigma machine configuration to out.

Parameters

enigma	Pointer to the Enigma machine instance.
out	Buffer to store the configuration string.