1 files changed, 0 insertions, 361 deletions
diff --git a/source4/lib/util/genrand.c b/source4/lib/util/genrand.c
deleted file mode 100644
index 7df4ec4e20..0000000000
--- a/source4/lib/util/genrand.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-
-   Functions to create reasonable random numbers for crypto use.
-
-   Copyright (C) Jeremy Allison 2001
-   
-   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 3 of the License, or
-   (at your option) any later version.
-   
-   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.
-   
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-#include "system/filesys.h"
-#include "lib/crypto/crypto.h"
-#include "system/locale.h"
-
-/**
- * @file
- * @brief Random number generation
- */
-
-static unsigned char hash[258];
-static uint32_t counter;
-
-static bool done_reseed = false;
-static unsigned int bytes_since_reseed = 0;
-
-static int urand_fd = -1;
-
-static void (*reseed_callback)(void *userdata, int *newseed);
-static void *reseed_callback_userdata = NULL;
-
-/**
- Copy any user given reseed data.
-**/
-
-_PUBLIC_ void set_rand_reseed_callback(void (*fn)(void *, int *), void *userdata)
-{
-	reseed_callback = fn;
-	reseed_callback_userdata = userdata;
-	set_need_random_reseed();
-}
-
-/**
- * Tell the random number generator it needs to reseed.
- */
-_PUBLIC_ void set_need_random_reseed(void)
-{
-	done_reseed = false;
-	bytes_since_reseed = 0;
-}
-
-static void get_rand_reseed_data(int *reseed_data)
-{
-	if (reseed_callback) {
-		reseed_callback(reseed_callback_userdata, reseed_data);
-	} else {
-		*reseed_data = 0;
-	}
-}
-
-/**************************************************************** 
- Setup the seed.
-*****************************************************************/
-
-static void seed_random_stream(unsigned char *seedval, size_t seedlen)
-{
-	unsigned char j = 0;
-	size_t ind;
-
-	for (ind = 0; ind < 256; ind++)
-		hash[ind] = (unsigned char)ind;
-
-	for( ind = 0; ind < 256; ind++) {
-		unsigned char tc;
-
-		j += (hash[ind] + seedval[ind%seedlen]);
-
-		tc = hash[ind];
-		hash[ind] = hash[j];
-		hash[j] = tc;
-	}
-
-	hash[256] = 0;
-	hash[257] = 0;
-}
-
-/**************************************************************** 
- Get datasize bytes worth of random data.
-*****************************************************************/
-
-static void get_random_stream(unsigned char *data, size_t datasize)
-{
-	unsigned char index_i = hash[256];
-	unsigned char index_j = hash[257];
-	size_t ind;
-
-	for( ind = 0; ind < datasize; ind++) {
-		unsigned char tc;
-		unsigned char t;
-
-		index_i++;
-		index_j += hash[index_i];
-
-		tc = hash[index_i];
-		hash[index_i] = hash[index_j];
-		hash[index_j] = tc;
-
-		t = hash[index_i] + hash[index_j];
-		data[ind] = hash[t];
-	}
-
-	hash[256] = index_i;
-	hash[257] = index_j;
-}
-
-/****************************************************************
- Get a 16 byte hash from the contents of a file.  
-
- Note that the hash is initialised, because the extra entropy is not
- worth the valgrind pain.
-*****************************************************************/
-
-static void do_filehash(const char *fname, unsigned char *the_hash)
-{
-	unsigned char buf[1011]; /* deliberate weird size */
-	unsigned char tmp_md4[16];
-	int fd, n;
-
-	ZERO_STRUCT(tmp_md4);
-
-	fd = open(fname,O_RDONLY,0);
-	if (fd == -1)
-		return;
-
-	while ((n = read(fd, (char *)buf, sizeof(buf))) > 0) {
-		mdfour(tmp_md4, buf, n);
-		for (n=0;n<16;n++)
-			the_hash[n] ^= tmp_md4[n];
-	}
-	close(fd);
-}
-
-/**************************************************************
- Try and get a good random number seed. Try a number of
- different factors. Firstly, try /dev/urandom - use if exists.
-
- We use /dev/urandom as a read of /dev/random can block if
- the entropy pool dries up. This leads clients to timeout
- or be very slow on connect.
-
- If we can't use /dev/urandom then seed the stream random generator
- above...
-**************************************************************/
-
-static int do_reseed(bool use_fd, int fd)
-{
-	unsigned char seed_inbuf[40];
-	uint32_t v1, v2; struct timeval tval; pid_t mypid;
-	int reseed_data = 0;
-
-	if (use_fd) {
-		if (fd == -1) {
-			fd = open( "/dev/urandom", O_RDONLY,0);
-		}
-		if (fd != -1
-		    && (read(fd, seed_inbuf, sizeof(seed_inbuf)) == sizeof(seed_inbuf))) {
-			seed_random_stream(seed_inbuf, sizeof(seed_inbuf));
-			return fd;
-		}
-	}
-
-	/* Add in some secret file contents */
-
-	do_filehash("/etc/shadow", &seed_inbuf[0]);
-
-	/*
-	 * Add the counter, time of day, and pid.
-	 */
-
-	GetTimeOfDay(&tval);
-	mypid = getpid();
-	v1 = (counter++) + mypid + tval.tv_sec;
-	v2 = (counter++) * mypid + tval.tv_usec;
-
-	SIVAL(seed_inbuf, 32, v1 ^ IVAL(seed_inbuf, 32));
-	SIVAL(seed_inbuf, 36, v2 ^ IVAL(seed_inbuf, 36));
-
-	/*
-	 * Add any user-given reseed data.
-	 */
-
-	get_rand_reseed_data(&reseed_data);
-	if (reseed_data) {
-		size_t i;
-		for (i = 0; i < sizeof(seed_inbuf); i++)
-			seed_inbuf[i] ^= ((char *)(&reseed_data))[i % sizeof(reseed_data)];
-	}
-
-	seed_random_stream(seed_inbuf, sizeof(seed_inbuf));
-
-	return -1;
-}
-
-/**
- Interface to the (hopefully) good crypto random number generator.
- Will use our internal PRNG if more than 40 bytes of random generation
- has been requested, otherwise tries to read from /dev/random
-**/
-_PUBLIC_ void generate_random_buffer(uint8_t *out, int len)
-{
-	unsigned char md4_buf[64];
-	unsigned char tmp_buf[16];
-	unsigned char *p;
-
-	if(!done_reseed) {
-		bytes_since_reseed += len;
-		
-		/* Magic constant to try and avoid reading 40 bytes
-		 * and setting up the PRNG if the app only ever wants
-		 * a few bytes */
-		if (bytes_since_reseed < 40) {
-			if (urand_fd == -1) {
-				urand_fd = open( "/dev/urandom", O_RDONLY,0);
-			}
-			if(urand_fd != -1 && (read(urand_fd, out, len) == len)) {
-				return;
-			}
-		}
-
-		urand_fd = do_reseed(true, urand_fd);
-		done_reseed = true;
-	}
-
-	/*
-	 * Generate random numbers in chunks of 64 bytes,
-	 * then md4 them & copy to the output buffer.
-	 * This way the raw state of the stream is never externally
-	 * seen.
-	 */
-
-	p = out;
-	while(len > 0) {
-		int copy_len = len > 16 ? 16 : len;
-
-		get_random_stream(md4_buf, sizeof(md4_buf));
-		mdfour(tmp_buf, md4_buf, sizeof(md4_buf));
-		memcpy(p, tmp_buf, copy_len);
-		p += copy_len;
-		len -= copy_len;
-	}
-}
-
-/**
- Interface to the (hopefully) good crypto random number generator.
- Will always use /dev/urandom if available.
-**/
-_PUBLIC_ void generate_secret_buffer(uint8_t *out, int len)
-{
-	if (urand_fd == -1) {
-		urand_fd = open( "/dev/urandom", O_RDONLY,0);
-	}
-	if(urand_fd != -1 && (read(urand_fd, out, len) == len)) {
-		return;
-	}
-	
-	generate_random_buffer(out, len);
-}
-
-/**
-  generate a single random uint32_t
-**/
-_PUBLIC_ uint32_t generate_random(void)
-{
-	uint8_t v[4];
-	generate_random_buffer(v, 4);
-	return IVAL(v, 0);
-}
-
-
-/**
-  very basic password quality checker
-**/
-_PUBLIC_ bool check_password_quality(const char *s)
-{
-	int has_digit=0, has_capital=0, has_lower=0, has_special=0, has_high=0;
-	while (*s) {
-		if (isdigit((unsigned char)*s)) {
-			has_digit |= 1;
-		} else if (isupper((unsigned char)*s)) {
-			has_capital |= 1;
-		} else if (islower((unsigned char)*s)) {
-			has_lower |= 1;
-		} else if (isascii((unsigned char)*s)) {
-			has_special |= 1;
-		} else {
-			has_high++;
-		}
-		s++;
-	}
-
-	return ((has_digit + has_lower + has_capital + has_special) >= 3
-		|| (has_high > strlen(s)/2));
-}
-
-/**
- Use the random number generator to generate a random string.
-**/
-
-_PUBLIC_ char *generate_random_str_list(TALLOC_CTX *mem_ctx, size_t len, const char *list)
-{
-	size_t i;
-	size_t list_len = strlen(list);
-
-	char *retstr = talloc_array(mem_ctx, char, len + 1);
-	if (!retstr) return NULL;
-
-	generate_random_buffer((uint8_t *)retstr, len);
-	for (i = 0; i < len; i++) {
-		retstr[i] = list[retstr[i] % list_len];
-	}
-	retstr[i] = '\0';
-
-	return retstr;
-}
-
-/**
- * Generate a random text string consisting of the specified length.
- * The returned string will be allocated.
- *
- * Characters used are: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+_-#.,
- */
-
-_PUBLIC_ char *generate_random_str(TALLOC_CTX *mem_ctx, size_t len)
-{
-	char *retstr;
-	const char *c_list = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+_-#.,";
-
-again:
-	retstr = generate_random_str_list(mem_ctx, len, c_list);
-	if (!retstr) return NULL;
-
-	/* we need to make sure the random string passes basic quality tests
-	   or it might be rejected by windows as a password */
-	if (len >= 7 && !check_password_quality(retstr)) {
-		talloc_free(retstr);
-		goto again;
-	}
-
-	return retstr;
-}