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/* Include file for high-level encryption routines.
*
* (C) 2003-2012 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*
*
*/
#include "services.h"
#include "encrypt.h"
Encryption encryption;
/******************************************************************************/
void encmodule_encrypt(int (*func)
(const char *src, int len, char *dest, int size))
{
encryption.encrypt = func;
}
void encmodule_encrypt_check_len(int (*func) (int passlen, int bufsize))
{
encryption.encrypt_check_len = func;
}
void encmodule_decrypt(int (*func) (const char *src, char *dest, int size))
{
encryption.decrypt = func;
}
void encmodule_check_password(int (*func)
(const char *plaintext,
const char *password))
{
encryption.check_password = func;
}
/******************************************************************************/
/**
* Encrypt string `src' of length `len', placing the result in buffer
* `dest' of size `size'. Returns 0 on success, -1 on error.
**/
int enc_encrypt(const char *src, int len, char *dest, int size)
{
if (encryption.encrypt) {
return encryption.encrypt(src, len, dest, size);
}
return -1;
}
/**
* Check whether the result of encrypting a password of length `passlen'
* will fit in a buffer of size `bufsize'. Returns 0 if the encrypted
* password would fit in the buffer, otherwise returns the maximum length
* password that would fit (this value will be smaller than `passlen').
* If the result of encrypting even a 1-byte password would exceed the
* specified buffer size, generates a fatal error.
**/
int enc_encrypt_check_len(int passlen, int bufsize)
{
if (encryption.encrypt_check_len) {
return encryption.encrypt_check_len(passlen, bufsize);
}
return -1;
}
/**
* Decrypt encrypted string `src' into buffer `dest' of length `len'.
* Returns 1 (not 0) on success, 0 if the encryption algorithm does not
* allow decryption, and -1 if another failure occurred (e.g. destination
* buffer too small).
**/
int enc_decrypt(const char *src, char *dest, int size)
{
if (encryption.decrypt) {
return encryption.decrypt(src, dest, size);
}
return -1;
}
/**
* Check an input password `plaintext' against a stored, encrypted password
* `password'. Return value is:
* 1 if the password matches
* 0 if the password does not match
* -1 if an error occurred while checking
**/
int enc_check_password(const char *plaintext, const char *password)
{
if (encryption.check_password) {
return encryption.check_password(plaintext, password);
}
return -1;
}
/* EOF */
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