osmo_pcap_client: Start with the framework for the pcap client

This is just the normal skeleton for the osmocom code.
diff --git a/src/osmo_common.c b/src/osmo_common.c
new file mode 100644
index 0000000..099cff2
--- /dev/null
+++ b/src/osmo_common.c
@@ -0,0 +1,90 @@
+/*
+ * osmo-pcap common code
+ *
+ * (C) 2011 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2011 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <osmo-pcap/common.h>
+
+#include <osmocom/core/utils.h>
+
+static const struct log_info_cat default_categories[] = {
+	[DPCAP] = {
+		.name = "DPCAP",
+		.description = "PCAP related functionality",
+		.color = "\033[1;31m",
+		.enabled = 1, .loglevel = LOGL_NOTICE,
+	},
+	[DCLIENT] = {
+		.name = "DCLIENT",
+		.description = "Client related functionality",
+		.color = "\033[1;32m",
+		.enabled = 1, .loglevel = LOGL_NOTICE,
+	},
+	[DSERVER] = {
+		.name = "DSERVER",
+		.description = "Server related functionality",
+		.color = "\033[1;33m",
+		.enabled = 1, .loglevel = LOGL_NOTICE,
+	},
+	[DVTY] = {
+		.name = "DVTY",
+		.description = "VTY code",
+		.color = "\033[1;34m",
+		.enabled = 1, .loglevel = LOGL_NOTICE,
+	},
+};
+
+const struct log_info log_info = {
+	.cat = default_categories,
+	.num_cat = ARRAY_SIZE(default_categories),
+};
+
+const char *osmopcap_copyright = 
+	"Copyright (C) 2011 Holger Freyther\r\n"
+	"License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n"
+	"This is free software: you are free to change and redistribute it.\r\n"
+	"There is NO WARRANTY, to the extent permitted by law.\r\n";
+
+
+enum node_type  osmopcap_go_parent(struct vty *vty)
+{
+	switch (vty->node) {
+	case CLIENT_NODE:
+	case SERVER_NODE:
+		vty->node = CONFIG_NODE;
+		vty->index = NULL;
+		break;
+	default:
+		LOGP(DVTY, LOGL_ERROR, "Unhandled node %d\n", vty->node);
+		break;
+	}
+
+	return vty->node;	
+}
+
+int osmopcap_is_config_node(struct vty *vty, int node)
+{
+	switch (node) {
+	case CONFIG_NODE:
+		return 0;
+	default:
+		return 1;
+	}
+}