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
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23 ** AND NONINFRINGEMENT. IN NO EVENT SHALL DAMIEN MILLER OR INTERNET
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42 #include <sys/types.h>
52 #ifndef HAVE_ARC4RANDOM
54 void get_random_bytes(unsigned char *buf, int len);
56 static rc4_t *rc4 = NULL;
58 unsigned int arc4random(void)
65 rc4_getbytes(rc4, (unsigned char *)&r, sizeof(r));
70 void arc4random_stir(void)
72 unsigned char rand_buf[32];
75 rc4 = xmalloc(sizeof(*rc4));
77 get_random_bytes(rand_buf, sizeof(rand_buf));
78 rc4_key(rc4, rand_buf, sizeof(rand_buf));
81 void get_random_bytes(unsigned char *buf, int len)
86 char egd_message[2] = { 0x02, 0x00 };
89 random_pool = open(RANDOM_POOL, O_RDONLY);
90 if (random_pool == -1)
91 fatal("Couldn't open random pool \"%s\": %s", RANDOM_POOL, strerror(errno));
95 fatal("Too many bytes to read from EGD");
97 /* Send blocking read request to EGD */
99 c = write(random_pool, egd_message, sizeof(egd_message));
101 fatal("Couldn't write to EGD socket \"%s\": %s", RANDOM_POOL, strerror(errno));
102 #endif /* HAVE_EGD */
104 c = read(random_pool, buf, len);
106 fatal("Couldn't read from random pool \"%s\": %s", RANDOM_POOL, strerror(errno));
109 fatal("Short read from random pool \"%s\"", RANDOM_POOL);
113 #endif /* !HAVE_ARC4RANDOM */
115 #ifndef HAVE_SETPROCTITLE
116 void setproctitle(const char *fmt, ...)
120 #endif /* !HAVE_SETPROCTITLE */