1 files changed, 66 insertions, 0 deletions
diff --git a/src/conn-tools/s6-ipcclient.c b/src/conn-tools/s6-ipcclient.c
new file mode 100644
index 0000000..61864bc
--- /dev/null
+++ b/src/conn-tools/s6-ipcclient.c
@@ -0,0 +1,66 @@
+/* ISC license. */
+
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/env.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/webipc.h>
+
+#define USAGE "s6-ipcclient [ -q | -Q | -v ] [ -p bindpath ] [ -l localname ] path prog..."
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+  char const *bindpath = 0 ;
+  char const *localname = 0 ;
+  unsigned int verbosity = 1 ;
+  PROG = "s6-ipcclient" ;
+  {
+    subgetopt_t l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      register int opt = subgetopt_r(argc, argv, "qQvp:l:", &l) ;
+      if (opt == -1) break ;
+      switch (opt)
+      {
+        case 'q' : if (verbosity) verbosity-- ; break ;
+        case 'Q' : verbosity = 1 ; break ;
+        case 'v' : verbosity++ ; break ;
+        case 'p' : bindpath = l.arg ; break ;
+        case 'l' : localname = l.arg ; break ;
+        default : strerr_dieusage(100, USAGE) ;
+      }
+    }
+    argc -= l.ind ; argv += l.ind ;
+  }
+  if (argc < 2) strerr_dieusage(100, USAGE) ;
+  {
+    char modif[24 + IPCPATH_MAX] = "PROTO=IPC\0IPCLOCALPATH=" ;
+    unsigned int i = 23 ;
+    int s = ipc_stream() ;
+    if (s < 0) strerr_diefu1sys(111, "create socket") ;
+    if (bindpath && (ipc_bind(s, bindpath) == -1))
+      strerr_diefu2sys(111, "bind socket to ", bindpath) ;
+    if (!ipc_connect(s, argv[0]))
+      strerr_diefu2sys(111, "connect to ", argv[0]) ;
+    if (verbosity >= 2) strerr_warn3x(PROG, ": connected to ", argv[0]) ;
+    if (localname)
+    {
+      register unsigned int n = str_len(localname) ;
+      if (n > IPCPATH_MAX) n = IPCPATH_MAX ;
+      byte_copy(modif + i, n, localname) ;
+      i += n ; modif[i++] = 0 ;
+    }
+    else
+    {
+      int dummy ;
+      if (ipc_local(s, modif + i, IPCPATH_MAX, &dummy) < 0) modif[--i] = 0 ;
+      else i += str_len(modif + i) + 1 ;
+    }
+    if (fd_move(6, s) < 0)
+      strerr_diefu2sys(111, "set up fd ", "6") ;
+    if (fd_copy(7, 6) < 0)
+      strerr_diefu2sys(111, "set up fd ", "7") ;
+    pathexec_r(argv+1, envp, env_len(envp), modif, i) ;
+  }
+  strerr_dieexec(111, argv[1]) ;
+}