1 files changed, 59 insertions, 0 deletions
diff --git a/src/conn-tools/s6-tcpserver-socketbinder.c b/src/conn-tools/s6-tcpserver-socketbinder.c
new file mode 100644
index 0000000..bc40ef4
--- /dev/null
+++ b/src/conn-tools/s6-tcpserver-socketbinder.c
@@ -0,0 +1,59 @@
+/* ISC license. */
+
+#include <skalibs/nonposix.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+
+#include <skalibs/types.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/fmtscan.h>
+#include <skalibs/strerr.h>
+#include <skalibs/socket.h>
+#include <skalibs/ip46.h>
+#include <skalibs/exec.h>
+
+#define USAGE "s6-tcpserver-socketbinder [ -d | -D ] [ -b backlog ] [ -M | -m ] [ -B ] ip port prog..."
+#define dieusage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv)
+{
+  unsigned int backlog = SOMAXCONN ;
+  int flagreuse = 1 ;
+  int flagudp = 0 ;
+  unsigned int flags = O_NONBLOCK ;
+  ip46 ip ;
+  uint16_t port ;
+  PROG = "s6-tcpserver-socketbinder" ;
+  {
+    subgetopt l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      int opt = subgetopt_r(argc, argv, "DdMmBb:", &l) ;
+      if (opt == -1) break ;
+      switch (opt)
+      {
+        case 'D' : flagreuse = 0 ; break ;
+        case 'd' : flagreuse = 1 ; break ;
+        case 'M' : flagudp = 0 ; break ;
+        case 'm' : flagudp = 1 ; break ;
+        case 'B' : flags = 0 ; break ;
+        case 'b' : if (!uint0_scan(l.arg, &backlog)) dieusage() ; break ;
+        default : dieusage() ;
+      }
+    }
+    argc -= l.ind ; argv += l.ind ;
+  }
+  if (argc < 3) dieusage() ;
+  if (!ip46_scan(argv[0], &ip) || !uint160_scan(argv[1], &port)) dieusage() ;
+  close(0) ;
+  if (flagudp ? socket_udp46_internal(ip46_is6(&ip), flags) : socket_tcp46_internal(ip46_is6(&ip), flags))
+    strerr_diefu1sys(111, "create socket") ;
+  if ((flagreuse ? socket_bind46_reuse(0, &ip, port) : socket_bind46(0, &ip, port)) == -1)
+    strerr_diefu5sys(111, "bind to ", argv[0], ":", argv[1], " ") ;
+  if (backlog && socket_listen(0, backlog) == -1)
+    strerr_diefu5sys(111, "listen to ", argv[0], ":", argv[1], " ") ;
+
+  xexec(argv+2) ;
+}