Introduce a generic object for using network sockets

Introduces a simple wrapper around the raw POSIX sockets APIs
and name resolution APIs. Allows for easy creation of client
and server sockets with correct usage of name resolution APIs
for protocol agnostic socket setup.

It can listen for UNIX and TCP stream sockets.

It can connect to UNIX, TCP streams directly, or indirectly
to UNIX sockets via an SSH tunnel or external command

* src/Makefile.am: Add to libvirt-net-rpc.la
* src/rpc/virnetsocket.c, src/rpc/virnetsocket.h: Generic
  sockets APIs
* tests/Makefile.am: Add socket test
* tests/virnetsockettest.c: New test case
* tests/testutils.c: Avoid overriding LIBVIRT_DEBUG settings
* tests/ssh.c: Dumb helper program for SSH tunnelling tests

1 files changed, 54 insertions, 0 deletions

diff --git a/tests/ssh.c b/tests/ssh.c
new file mode 100644
index 000000000..08bb63d8a
--- /dev/null
+++ b/tests/ssh.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ *
+ * Author: Daniel P. Berrange <berrange@redhat.com>
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include "internal.h"
+
+int main(int argc, char **argv)
+{
+    int i;
+    int failConnect = 0; /* Exit -1, with no data on stdout, msg on stderr */
+    int dieEarly = 0;    /* Exit -1, with partial data on stdout, msg on stderr */
+
+    for (i = 1 ; i < argc ; i++) {
+        if (STREQ(argv[i], "nosuchhost"))
+            failConnect = 1;
+        else if (STREQ(argv[i], "crashinghost"))
+            dieEarly = 1;
+    }
+
+    if (failConnect) {
+        fprintf(stderr, "%s", "Cannot connect to host nosuchhost\n");
+        return -1;
+    }
+
+    if (dieEarly) {
+        printf("%s\n", "Hello World");
+        fprintf(stderr, "%s", "Hangup from host\n");
+        return -1;
+    }
+
+    for (i = 1 ; i < argc ; i++)
+        printf("%s%c", argv[i], i == (argc -1) ? '\n' : ' ');
+
+    return 0;
+}