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Move out rand-unix functions from the core lib.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18475 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-10-16 10:23:01 +00:00
parent 527ba2f5f6
commit a80a2a3176
1 changed files with 2 additions and 103 deletions
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105
lib/des/rand.c
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@@ -43,8 +43,8 @@ RCSID("$Id$");
#include <roken.h> #include <roken.h>
static RAND_METHOD builtin_rand; extern RAND_METHOD hc_rand_unix_method;
static const RAND_METHOD *selected_meth = &builtin_rand; static const RAND_METHOD *selected_meth = &hc_rand_unix_method;
void void
RAND_seed(const void *indata, size_t size) RAND_seed(const void *indata, size_t size)
@@ -118,104 +118,3 @@ RAND_egd(const char *filename)
{ {
return 1; return 1;
} }
/*
* Unix /dev/random
*/
static int
get_device_fd(int flags)
{
static const char *rnd_devices[] = {
"/dev/urandom",
"/dev/random",
"/dev/srandom",
"/dev/arandom",
NULL
};
const char **p;
for(p = rnd_devices; *p; p++) {
int fd = open(*p, flags | O_NDELAY);
if(fd >= 0)
return fd;
}
return -1;
}
static void
unix_seed(const void *indata, int size)
{
int fd;
if (size <= 0)
return;
fd = get_device_fd(O_WRONLY);
if (fd < 0)
return;
write(fd, indata, size);
close(fd);
}
static int
unix_bytes(unsigned char *outdata, int size)
{
ssize_t ret;
int fd;
if (size <= 0)
return 0;
fd = get_device_fd(O_RDONLY);
if (fd < 0)
return 0;
ret = read(fd, outdata, size);
close(fd);
if (size != ret)
return 0;
return 1;
}
static void
unix_cleanup(void)
{
}
static void
unix_add(const void *indata, int size, double entropi)
{
unix_seed(indata, size);
}
static int
unix_pseudorand(unsigned char *outdata, int size)
{
return unix_bytes(outdata, size);
}
static int
unix_status(void)
{
int fd;
fd = get_device_fd(O_RDONLY);
if (fd < 0)
return 0;
close(fd);
return 1;
}
static RAND_METHOD builtin_rand = {
unix_seed,
unix_bytes,
unix_cleanup,
unix_add,
unix_pseudorand,
unix_status
};