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, 27 deletions

diff --git a/src/librandom/randomegd_readb.c b/src/librandom/randomegd_readb.c
deleted file mode 100644
index 614f7a8..0000000
--- a/src/librandom/randomegd_readb.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/* ISC license. */
-
-#include <skalibs/allreadwrite.h>
-#include <skalibs/randomegd.h>
-
-unsigned int randomegd_readb (int s, char *x, unsigned int n)
-{
-  unsigned int w = 0 ;
-  unsigned int i = 0 ;
-  for (; i < (n / 255) ; i++)
-  {
-    char const c[2] = { 0x02, 0xFF } ;
-    register unsigned int wtmp ;
-    if (allwrite(s, c, 2) < 2) return w ;
-    wtmp = allread(s, x + w, 255) ;
-    w += wtmp ;
-    if (wtmp < 255) return w ;
-  }
-  if (w < n)
-  {
-    char c[2] = "\002" ;
-    c[1] = n - w ;
-    if (allwrite(s, c, 2) < 2) return w ;
-    w += allread(s, x + w, c[1]) ;
-  }
-  return w ;
-}