+++ /dev/null
-/*
- * Copyright (c) 2007 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <config.h>
-
-#include <sys/types.h>
-#ifdef HAVE_SYS_UN_H
-#include <sys/un.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <assert.h>
-
-#include <rand.h>
-#include <randi.h>
-
-#include <roken.h>
-
-static const char *egd_path = "/var/run/egd-pool";
-
-#define MAX_EGD_DATA 255
-
-static int
-connect_egd(const char *path)
-{
- struct sockaddr_un addr;
- int fd;
-
- memset(&addr, 0, sizeof(addr));
-
- if (strlen(path) > sizeof(addr.sun_path))
- return -1;
-
- addr.sun_family = AF_UNIX;
- strlcpy(addr.sun_path, path, sizeof(addr.sun_path));
-
- fd = socket(AF_UNIX, SOCK_STREAM, 0);
- if (fd < 0)
- return -1;
-
- rk_cloexec(fd);
-
- if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)) != 0) {
- close(fd);
- return -1;
- }
-
- return fd;
-}
-
-static int
-get_entropy(int fd, void *data, size_t len)
-{
- unsigned char msg[2];
-
- assert(len <= MAX_EGD_DATA);
-
- msg[0] = 0x02; /* read blocking data */
- msg[1] = len; /* wanted length */
-
- if (net_write(fd, msg, sizeof(msg)) != sizeof(msg))
- return 0;
-
- if (net_read(fd, data, len) != len)
- return 0;
-
- return 1;
-}
-
-static int
-put_entropy(int fd, const void *data, size_t len)
-{
- unsigned char msg[4];
-
- assert (len <= MAX_EGD_DATA);
-
- msg[0] = 0x03; /* write data */
- msg[1] = 0; /* dummy */
- msg[2] = 0; /* entropy */
- msg[3] = len; /* length */
-
- if (net_write(fd, msg, sizeof(msg)) != sizeof(msg))
- return 0;
- if (net_write(fd, data, len) != len)
- return 0;
-
- return 1;
-}
-
-/*
- *
- */
-
-static void
-egd_seed(const void *indata, int size)
-{
- size_t len;
- int fd, ret = 1;
-
- fd = connect_egd(egd_path);
- if (fd < 0)
- return;
-
- while(size) {
- len = size;
- if (len > MAX_EGD_DATA)
- len = MAX_EGD_DATA;
- ret = put_entropy(fd, indata, len);
- if (ret != 1)
- break;
- indata = ((unsigned char *)indata) + len;
- size -= len;
- }
- close(fd);
-}
-
-static int
-get_bytes(const char *path, unsigned char *outdata, int size)
-{
- size_t len;
- int fd, ret = 1;
-
- if (path == NULL)
- path = egd_path;
-
- fd = connect_egd(path);
- if (fd < 0)
- return 0;
-
- while(size) {
- len = size;
- if (len > MAX_EGD_DATA)
- len = MAX_EGD_DATA;
- ret = get_entropy(fd, outdata, len);
- if (ret != 1)
- break;
- outdata += len;
- size -= len;
- }
- close(fd);
-
- return ret;
-}
-
-static int
-egd_bytes(unsigned char *outdata, int size)
-{
- return get_bytes(NULL, outdata, size);
-}
-
-static void
-egd_cleanup(void)
-{
-}
-
-static void
-egd_add(const void *indata, int size, double entropi)
-{
- egd_seed(indata, size);
-}
-
-static int
-egd_pseudorand(unsigned char *outdata, int size)
-{
- return get_bytes(NULL, outdata, size);
-}
-
-static int
-egd_status(void)
-{
- int fd;
- fd = connect_egd(egd_path);
- if (fd < 0)
- return 0;
- close(fd);
- return 1;
-}
-
-const RAND_METHOD hc_rand_egd_method = {
- egd_seed,
- egd_bytes,
- egd_cleanup,
- egd_add,
- egd_pseudorand,
- egd_status
-};
-
-const RAND_METHOD *
-RAND_egd_method(void)
-{
- return &hc_rand_egd_method;
-}
-
-
-int
-RAND_egd(const char *filename)
-{
- return RAND_egd_bytes(filename, 128);
-}
-
-int
-RAND_egd_bytes(const char *filename, int size)
-{
- void *data;
- int ret;
-
- if (size <= 0)
- return 0;
-
- data = malloc(size);
- if (data == NULL)
- return 0;
-
- ret = get_bytes(filename, data, size);
- if (ret != 1) {
- free(data);
- return ret;
- }
-
- RAND_seed(data, size);
-
- memset(data, 0, size);
- free(data);
-
- return 1;
-}
*/
/*
- * $Id: rand.h,v 1.1 2013/06/17 19:11:42 robert Exp $
+ * $Id: rand.h,v 1.2 2014/04/18 16:40:46 beck Exp $
*/
#ifndef _HEIM_RAND_H
#define RAND_load_file hc_RAND_load_file
#define RAND_write_file hc_RAND_write_file
#define RAND_status hc_RAND_status
-#define RAND_egd hc_RAND_egd
-#define RAND_egd_bytes hc_RAND_egd_bytes
#define RAND_fortuna_method hc_RAND_fortuna_method
-#define RAND_egd_method hc_RAND_egd_method
#define RAND_unix_method hc_RAND_unix_method
#define RAND_w32crypto_method hc_RAND_w32crypto_method
int RAND_load_file(const char *, size_t);
int RAND_write_file(const char *);
int RAND_status(void);
-int RAND_egd(const char *);
-int RAND_egd_bytes(const char *, int);
const RAND_METHOD * RAND_fortuna_method(void);
const RAND_METHOD * RAND_unix_method(void);
-const RAND_METHOD * RAND_egd_method(void);
const RAND_METHOD * RAND_w32crypto_method(void);
#endif /* _HEIM_RAND_H */
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