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Diffstat (limited to 'src/libstrongswan/utils/randomizer.c')
| -rw-r--r-- | src/libstrongswan/utils/randomizer.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/src/libstrongswan/utils/randomizer.c b/src/libstrongswan/utils/randomizer.c deleted file mode 100644 index c15d108c7..000000000 --- a/src/libstrongswan/utils/randomizer.c +++ /dev/null @@ -1,165 +0,0 @@ -/** - * @file randomizer.c - * - * @brief Implementation of randomizer_t. - * - */ - -/* - * Copyright (C) 2005-2006 Martin Willi - * Copyright (C) 2005 Jan Hutter - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -#include <string.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> - -#include "randomizer.h" - - -typedef struct private_randomizer_t private_randomizer_t; - -/** - * Private data of an randomizer_t object. - */ -struct private_randomizer_t { - - /** - * Public randomizer_t interface. - */ - randomizer_t public; - - /** - * @brief Reads a specific number of bytes from random or pseudo random device. - * - * @param this calling object - * @param pseudo_random TRUE, if from pseudo random bytes should be read, - * FALSE for true random bytes - * @param bytes number of bytes to read - * @param[out] buffer pointer to buffer where to write the data in. - * Size of buffer has to be at least bytes. - */ - status_t (*get_bytes_from_device) (private_randomizer_t *this,bool pseudo_random, size_t bytes, u_int8_t *buffer); -}; - - -/** - * Implementation of private_randomizer_t.get_bytes_from_device. - */ -static status_t get_bytes_from_device(private_randomizer_t *this,bool pseudo_random, size_t bytes, u_int8_t *buffer) -{ - size_t ndone; - int device; - size_t got; - char * device_name; - - device_name = pseudo_random ? DEV_URANDOM : DEV_RANDOM; - - device = open(device_name, 0); - if (device < 0) { - return FAILED; - } - ndone = 0; - - /* read until nbytes are read */ - while (ndone < bytes) - { - got = read(device, buffer + ndone, bytes - ndone); - if (got <= 0) { - close(device); - return FAILED; - } - ndone += got; - } - close(device); - return SUCCESS; -} - -/** - * Implementation of randomizer_t.get_random_bytes. - */ -static status_t get_random_bytes(private_randomizer_t *this,size_t bytes, u_int8_t *buffer) -{ - return this->get_bytes_from_device(this, FALSE, bytes, buffer); -} - -/** - * Implementation of randomizer_t.allocate_random_bytes. - */ -static status_t allocate_random_bytes(private_randomizer_t *this, size_t bytes, chunk_t *chunk) -{ - status_t status; - chunk->len = bytes; - chunk->ptr = malloc(bytes); - status = this->get_bytes_from_device(this, FALSE, bytes, chunk->ptr); - if (status != SUCCESS) - { - free(chunk->ptr); - } - return status; -} - -/** - * Implementation of randomizer_t.get_pseudo_random_bytes. - */ -static status_t get_pseudo_random_bytes(private_randomizer_t *this,size_t bytes, u_int8_t *buffer) -{ - return (this->get_bytes_from_device(this, TRUE, bytes, buffer)); -} - -/** - * Implementation of randomizer_t.allocate_pseudo_random_bytes. - */ -static status_t allocate_pseudo_random_bytes(private_randomizer_t *this, size_t bytes, chunk_t *chunk) -{ - status_t status; - chunk->len = bytes; - chunk->ptr = malloc(bytes); - status = this->get_bytes_from_device(this, TRUE, bytes, chunk->ptr); - if (status != SUCCESS) - { - free(chunk->ptr); - } - return status; -} - -/** - * Implementation of randomizer_t.destroy. - */ -static void destroy(private_randomizer_t *this) -{ - free(this); -} - -/* - * Described in header. - */ -randomizer_t *randomizer_create(void) -{ - private_randomizer_t *this = malloc_thing(private_randomizer_t); - - /* public functions */ - this->public.get_random_bytes = (status_t (*) (randomizer_t *,size_t, u_int8_t *)) get_random_bytes; - this->public.allocate_random_bytes = (status_t (*) (randomizer_t *,size_t, chunk_t *)) allocate_random_bytes; - this->public.get_pseudo_random_bytes = (status_t (*) (randomizer_t *,size_t, u_int8_t *)) get_pseudo_random_bytes; - this->public.allocate_pseudo_random_bytes = (status_t (*) (randomizer_t *,size_t, chunk_t *)) allocate_pseudo_random_bytes; - this->public.destroy = (void (*) (randomizer_t *))destroy; - - /* private functions */ - this->get_bytes_from_device = get_bytes_from_device; - - return &(this->public); -} |