From 85d3f29ce384dea6cfbaa80215ce86d2d0358eba Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Sun, 16 Oct 2016 15:47:32 +0000
Subject:  Unconditionally switch s6-ftrigrd to surf (avoid boot stalling
 problems, and nobody cares about that RNG not being CS)

---
 src/libs6/ftrig1.h      |  1 +
 src/libs6/ftrig1_make.c | 19 ++++++++++++++++++-
 src/libs6/s6-ftrigrd.c  |  4 +---
 3 files changed, 20 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/libs6/ftrig1.h b/src/libs6/ftrig1.h
index 229de66..aa06b57 100644
--- a/src/libs6/ftrig1.h
+++ b/src/libs6/ftrig1.h
@@ -17,6 +17,7 @@ struct ftrig1_s
 } ;
 #define FTRIG1_ZERO { .fd = -1, .fdw = -1, .name = STRALLOC_ZERO }
 
+extern void ftrig1_init (void) ;
 extern int ftrig1_make (ftrig1_t *, char const *) ;
 extern void ftrig1_free (ftrig1_t *) ;
 
diff --git a/src/libs6/ftrig1_make.c b/src/libs6/ftrig1_make.c
index 83ffca9..8352e64 100644
--- a/src/libs6/ftrig1_make.c
+++ b/src/libs6/ftrig1_make.c
@@ -9,9 +9,26 @@
 #include <skalibs/tai.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/djbunix.h>
+#include <skalibs/surf.h>
 #include <skalibs/random.h>
 #include "ftrig1.h"
 
+static SURFSchedule surf_ctx = SURFSCHEDULE_ZERO ;
+
+void ftrig1_init (void)
+{
+  char seed[160] ;
+  random_makeseed(seed) ;
+  surf_init(&surf_ctx, seed) ;
+}
+
+static inline void surfname (char *s, unsigned int n)
+{
+  static char const oklist[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZghijklmnopqrstuvwxyz-_0123456789abcdef" ;
+  surf(&surf_ctx, s, n) ;
+  while (n--) s[n] = oklist[s[n] & 63] ;
+}
+
 int ftrig1_make (ftrig1_t *f, char const *path)
 {
   ftrig1_t ff = FTRIG1_ZERO ;
@@ -25,7 +42,7 @@ int ftrig1_make (ftrig1_t *f, char const *path)
   tmp[pathlen + 2 + FTRIG1_PREFIXLEN] = ':' ;
   if (!timestamp(tmp + pathlen + 3 + FTRIG1_PREFIXLEN)) return 0 ;
   tmp[pathlen + 28 + FTRIG1_PREFIXLEN] = ':' ;
-  random_name(tmp + pathlen + 29 + FTRIG1_PREFIXLEN, 16) ;
+  surfname(tmp + pathlen + 29 + FTRIG1_PREFIXLEN, 16) ;
   tmp[pathlen + 45 + FTRIG1_PREFIXLEN] = 0 ;
   
   {
diff --git a/src/libs6/s6-ftrigrd.c b/src/libs6/s6-ftrigrd.c
index 3200300..ac79bd2 100644
--- a/src/libs6/s6-ftrigrd.c
+++ b/src/libs6/s6-ftrigrd.c
@@ -13,7 +13,6 @@
 #include <skalibs/stralloc.h>
 #include <skalibs/sig.h>
 #include <skalibs/tai.h>
-#include <skalibs/random.h>
 #include <skalibs/djbunix.h>
 #include <skalibs/iopause.h>
 #include <skalibs/unixmessage.h>
@@ -195,8 +194,7 @@ int main (void)
   if (ndelay_on(0) < 0) strerr_diefu2sys(111, "ndelay_on ", "0") ;
   if (ndelay_on(1) < 0) strerr_diefu2sys(111, "ndelay_on ", "1") ;
   if (sig_ignore(SIGPIPE) < 0) strerr_diefu1sys(111, "ignore SIGPIPE") ;
-  if (!random_init())
-    strerr_diefu1sys(111, "init random generator") ;
+  ftrig1_init() ;
 
   {
     tain_t deadline ;
-- 
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