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-rw-r--r--source/lib/genrand.c226
1 files changed, 0 insertions, 226 deletions
diff --git a/source/lib/genrand.c b/source/lib/genrand.c
deleted file mode 100644
index b09f683e62d..00000000000
--- a/source/lib/genrand.c
+++ /dev/null
@@ -1,226 +0,0 @@
-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
-
- Functions to create reasonable random numbers for crypto use.
-
- Copyright (C) Jeremy Allison 1998
-
- 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.
-
- 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-
-extern int DEBUGLEVEL;
-static uint32 counter = 0;
-
-/****************************************************************
-get a 16 byte hash from the contents of a file
-Note that the hash is not initialised.
-*****************************************************************/
-static void do_filehash(char *fname, unsigned char *hash)
-{
- unsigned char buf[1011]; /* deliberate weird size */
- unsigned char tmp_md4[16];
- int fd, n;
-
- fd = open(fname,O_RDONLY);
- if (fd == -1) return;
-
- while ((n = read(fd, (char *)buf, sizeof(buf))) > 0) {
- mdfour(tmp_md4, buf, n);
- for (n=0;n<16;n++)
- hash[n] ^= tmp_md4[n];
- }
- close(fd);
-}
-
-
-
-/****************************************************************
- Try and get a seed by looking at the atimes of files in a given
- directory. XOR them into the buf array.
-*****************************************************************/
-
-static void do_dirrand(char *name, unsigned char *buf, int buf_len)
-{
- void *dp = sys_opendir(name);
- pstring fullname;
- int len_left;
- int fullname_len;
- char *pos;
-
- pstrcpy(fullname, name);
- fullname_len = strlen(fullname);
-
- if(fullname_len + 2 > sizeof(pstring))
- return;
-
- if(fullname[fullname_len] != '/') {
- fullname[fullname_len] = '/';
- fullname[fullname_len+1] = '\0';
- fullname_len = strlen(fullname);
- }
-
- len_left = sizeof(pstring) - fullname_len - 1;
- pos = &fullname[fullname_len];
-
- if(dp != NULL) {
- char *p;
-
- while ((p = readdirname(dp))) {
- struct stat st;
-
- if(strlen(p) <= len_left)
- strcpy(pos, p);
-
- if(sys_stat(fullname,&st) == 0) {
- SIVAL(buf, ((counter * 4)%(buf_len-4)),
- IVAL(buf,((counter * 4)%(buf_len-4))) ^ st.st_atime);
- counter++;
- DEBUG(10,("do_dirrand: value from file %s.\n", fullname));
- }
- }
- closedir(dp);
- }
-}
-
-/**************************************************************
- Try and get a good random number seed. Try a number of
- different factors. Firstly, try /dev/random and try and
- read from this. If this fails iterate through /tmp and
- /dev and XOR all the file timestamps. Next add in
- a hash of the contents of /etc/shadow and the smb passwd
- file and a combination of pid and time of day (yes I know this
- sucks :-). Finally md4 the result.
-
- The result goes in a 16 byte buffer passed from the caller
-**************************************************************/
-
-static uint32 do_reseed(unsigned char *md4_outbuf)
-{
- unsigned char md4_inbuf[40];
- BOOL got_random = False;
- uint32 v1, v2, ret;
- int fd;
- struct timeval tval;
- pid_t mypid;
- struct passwd *pw;
-
- memset(md4_inbuf, '\0', sizeof(md4_inbuf));
-
- fd = open( "/dev/random", O_RDONLY);
- if(fd >= 0) {
- /*
- * We can use /dev/random !
- */
- if(read(fd, md4_inbuf, 40) == 40) {
- got_random = True;
- DEBUG(10,("do_reseed: got 40 bytes from /dev/random.\n"));
- }
- close(fd);
- }
-
- if(!got_random) {
- /*
- * /dev/random failed - try /tmp and /dev for timestamps.
- */
- do_dirrand("/tmp", md4_inbuf, sizeof(md4_inbuf));
- do_dirrand("/dev", md4_inbuf, sizeof(md4_inbuf));
- }
-
- /* possibly add in some secret file contents */
- do_filehash("/etc/shadow", &md4_inbuf[0]);
- do_filehash(lp_smb_passwd_file(), &md4_inbuf[16]);
-
- /* add in the root encrypted password. On any system where security is taken
- seriously this will be secret */
- pw = getpwnam("root");
- if (pw && pw->pw_passwd) {
- int i;
- unsigned char md4_tmp[16];
- mdfour(md4_tmp, (unsigned char *)pw->pw_passwd, strlen(pw->pw_passwd));
- for (i=0;i<16;i++)
- md4_inbuf[8+i] ^= md4_tmp[i];
- }
-
- /*
- * Finally 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(md4_inbuf, 32, v1 ^ IVAL(md4_inbuf, 32));
- SIVAL(md4_inbuf, 36, v2 ^ IVAL(md4_inbuf, 36));
-
- mdfour(md4_outbuf, md4_inbuf, sizeof(md4_inbuf));
-
- /*
- * Return a 32 bit int created from XORing the
- * 16 bit return buffer.
- */
-
- ret = IVAL(md4_outbuf, 0);
- ret ^= IVAL(md4_outbuf, 4);
- ret ^= IVAL(md4_outbuf, 8);
- return (ret ^ IVAL(md4_outbuf, 12));
-}
-
-/*******************************************************************
- Interface to the (hopefully) good crypto random number generator.
-********************************************************************/
-
-void generate_random_buffer( unsigned char *out, int len, BOOL re_seed)
-{
- static BOOL done_reseed = False;
- static unsigned char md4_buf[16];
- unsigned char tmp_buf[16];
- unsigned char *p;
-
- if(!done_reseed || re_seed) {
- srandom(do_reseed(md4_buf));
- done_reseed = True;
- }
-
- /*
- * Generate random numbers in chunks of 64 bytes,
- * then md4 them & copy to the output buffer.
- * Added XOR with output from random, seeded
- * by the original md4_buf. This is to stop the
- * output from this function being the previous
- * md4_buf md4'ed. The output from this function
- * is often output onto the wire, and so it should
- * not be possible to guess the next output from
- * this function based on the previous output.
- * XORing in the output from random(), seeded by
- * the original md4 hash should stop this. JRA.
- */
-
- p = out;
- while(len > 0) {
- int i;
- int copy_len = len > 16 ? 16 : len;
- mdfour(tmp_buf, md4_buf, sizeof(md4_buf));
- memcpy(md4_buf, tmp_buf, sizeof(md4_buf));
- /* XOR in output from random(). */
- for(i = 0; i < 4; i++)
- SIVAL(tmp_buf, i*4, (IVAL(tmp_buf, i*4) ^ (uint32)random()));
- memcpy(p, tmp_buf, copy_len);
- p += copy_len;
- len -= copy_len;
- }
-}
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