From a144d44fbdcdb3713769759ba2d0853b66412839 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Sat, 21 Jul 2018 16:45:34 +0000
Subject:  Adaptation to skalibs-2.7.0.0

---
 src/libs6dns/s6dns_engine.c | 40 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

(limited to 'src/libs6dns')

diff --git a/src/libs6dns/s6dns_engine.c b/src/libs6dns/s6dns_engine.c
index 26cb5f3..0057b14 100644
--- a/src/libs6dns/s6dns_engine.c
+++ b/src/libs6dns/s6dns_engine.c
@@ -10,7 +10,6 @@
 #include <skalibs/error.h>
 #include <skalibs/tai.h>
 #include <skalibs/stralloc.h>
-#include <skalibs/mininetstring.h>
 #include <skalibs/socket.h>
 #include <skalibs/djbunix.h>
 #include <skalibs/ip46.h>
@@ -63,6 +62,43 @@ static int relevant (char const *q, unsigned int qlen, char const *ans, unsigned
   return 1 ;
 }
 
+static int s6dns_mininetstring_read (int fd, stralloc *sa, uint32_t *w)
+{
+  if (!*w)
+  {
+    char pack[2] ;
+    switch (fd_read(fd, pack, 2))
+    {
+      case -1 : return -1 ;
+      case 0 : return 0 ;
+      case 1 : *w = ((uint32_t)pack[0] << 8) | (1U << 31) ; break ;
+      case 2 : *w = ((uint32_t)pack[0] << 8) | (uint32_t)pack[1] | (1U << 30) ; break ;
+      default : return (errno = EDOM, -1) ;
+    }
+  }
+  if (*w & (1U << 31))
+  {
+    unsigned char c ;
+    switch (fd_read(fd, (char *)&c, 1))
+    {
+      case -1 : return -1 ;
+      case 0 : return (errno = EPIPE, -1) ;
+      case 1 : *w |= (uint32_t)c | (1U << 30) ; *w &= ~(1U << 31) ; break ;
+      default : return (errno = EDOM, -1) ;
+    }
+  }
+  if (*w & (1U << 30))
+  {
+    if (!stralloc_readyplus(sa, *w & ~(1U << 30))) return -1 ;
+    *w &= ~(1U << 30) ;
+  }
+  {
+    size_t r = allread(fd, sa->s + sa->len, *w) ;
+    sa->len += r ; *w -= r ;
+  }
+  return *w ? -1 : 1 ;
+}
+
 
  /* Network core functions: transport-dependent */
 
@@ -258,7 +294,7 @@ static int s6dns_engine_read_udp (s6dns_engine_t *dt, tain_t const *stamp)
 
 static int s6dns_engine_read_tcp (s6dns_engine_t *dt, tain_t const *stamp)
 {
-  ssize_t r = sanitize_read(mininetstring_read(dt->fd, &dt->sa, &dt->protostate)) ;
+  ssize_t r = sanitize_read(s6dns_mininetstring_read(dt->fd, &dt->sa, &dt->protostate)) ;
   if (r < 0) return (prepare_next(dt, stamp, 1), 0) ;
   else if (!r) return (errno = EAGAIN, 0) ;
   else if ((dt->sa.len - dt->querylen) < 12)
-- 
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