3 ** OpenBSD emulation routines
5 ** Damien Miller <djm@ibs.com.au>
7 ** Copyright 1999 Internet Business Solutions
9 ** Permission is hereby granted, free of charge, to any person
10 ** obtaining a copy of this software and associated documentation
11 ** files (the "Software"), to deal in the Software without
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14 ** of the Software, and to permit persons to whom the Software is
15 ** furnished to do so, subject to the following conditions:
17 ** The above copyright notice and this permission notice shall be
18 ** included in all copies or substantial portions of the Software.
20 ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
21 ** KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
22 ** WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
23 ** AND NONINFRINGEMENT. IN NO EVENT SHALL DAMIEN MILLER OR INTERNET
24 ** BUSINESS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 ** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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27 ** OR OTHER DEALINGS IN THE SOFTWARE.
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30 ** Solutions shall not be used in advertising or otherwise to promote
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42 #include <sys/types.h>
51 #ifndef HAVE_ARC4RANDOM
53 void get_random_bytes(unsigned char *buf, int len);
55 static rc4_t *rc4 = NULL;
57 unsigned int arc4random(void)
64 rc4_getbytes(rc4, (unsigned char *)&r, sizeof(r));
69 void arc4random_stir(void)
71 unsigned char rand_buf[32];
74 rc4 = xmalloc(sizeof(*rc4));
76 get_random_bytes(rand_buf, sizeof(rand_buf));
77 rc4_key(rc4, rand_buf, sizeof(rand_buf));
80 void get_random_bytes(unsigned char *buf, int len)
85 urandom = open("/dev/urandom", O_RDONLY);
88 fprintf(stderr, "Couldn't open /dev/urandom: %s", strerror(errno));
92 c = read(urandom, buf, len);
95 fprintf(stderr, "Couldn't read from /dev/urandom: %s", strerror(errno));
101 fprintf(stderr, "Short read from /dev/urandom");
105 #endif /* !HAVE_ARC4RANDOM */
107 #ifndef HAVE_SETPROCTITLE
108 void setproctitle(const char *fmt, ...)
112 #endif /* !HAVE_SETPROCTITLE */