Clean up and modernize librandom.

 Correct random number generation has historically been
suprisingly painful to achieve. There was no standard,
every system behaved in a subtly different way, and there
were a few userland initiatives to get decent randomness,
all incompatible of course.
 The situation is a bit better now, we're heading towards
some standardization. The arc4random() series of functions
is a good API, and available on a lot of systems -
unfortunately not Linux, but on Linux the new getrandom()
makes using /dev/random obsolete.

 So I removed the old crap in librandom, dropped EGD support,
dropped dynamic backend selection, made a single API series
(random_* instead of goodrandom_* and badrandom_*), added
an arc4random backend and a getrandom backend, and defaulted
to /dev/urandom backed up by SURF in the worst case. This
should be much smaller and logical. However, it's a major
API break, so the skarnet.org stack will be changed to
adapt.

1 files changed, 0 insertions, 51 deletions

diff --git a/src/librandom/unirandomdev.c b/src/librandom/unirandomdev.c
deleted file mode 100644
index 0f42ae3..0000000
--- a/src/librandom/unirandomdev.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* ISC license. */
-
-#include <errno.h>
-#include <skalibs/allreadwrite.h>
-#include <skalibs/buffer.h>
-#include <skalibs/djbunix.h>
-#include <skalibs/unirandom.h>
-#include <skalibs/unirandomdev.h>
-
-int unirandomdev_sinit (union unirandominfo *u, char const *file)
-{
-  register int fd = open_read(file) ;
-  if (fd < 0) return 0 ;
-  if (coe(fd) < 0)
-  {
-    register int e = errno ;
-    fd_close(fd) ;
-    errno = e ;
-    return 0 ;
-  }
-  buffer_init(&u->device.b, &fd_readsv, fd, u->device.buf, RANDOMBUF_BUFSIZE) ;
-  u->device.nb = 1 ;
-  return 1 ;
-}
-
-int unirandomdev_finish (union unirandominfo *u)
-{
-  return fd_close(buffer_fd(&u->device.b)) < 0 ;
-}
-
-static unsigned int unirandomdev_read (union unirandominfo *u, char *s, unsigned int n, unsigned int h)
-{
-  unsigned int w = 0 ;
-  if (u->device.nb != h)
-  {
-    if ((h ? ndelay_on(buffer_fd(&u->device.b)) : ndelay_off(buffer_fd(&u->device.b))) < 0) return 0 ;
-    u->device.nb = h ;
-  }
-  buffer_getall(&u->device.b, s, n, &w) ;
-  return w ;
-}
-
-unsigned int unirandomdev_readb (union unirandominfo *u, char *s, unsigned int n)
-{
-  return unirandomdev_read(u, s, n, 0) ;
-}
-
-unsigned int unirandomdev_readnb (union unirandominfo *u, char *s, unsigned int n)
-{
-  return unirandomdev_read(u, s, n, 1) ;
-}