network: Some more general IP functions.

[people/arne_f/network.git] / functions.ip

diff --git a/functions.ip b/functions.ip
new file mode 100644 (file)
index 0000000..f95265e
--- /dev/null
+++ b/functions.ip
@@ -0,0 +1,52 @@
+#!/bin/bash
+###############################################################################
+#                                                                             #
+# IPFire.org - A linux based firewall                                         #
+# Copyright (C) 2010  Michael Tremer & Christian Schmidt                      #
+#                                                                             #
+# This program is free software: you can redistribute it and/or modify        #
+# it under the terms of the GNU 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 General Public License for more details.                                #
+#                                                                             #
+# You should have received a copy of the GNU General Public License           #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
+#                                                                             #
+###############################################################################
+
+function ip_split_prefix() {
+       local address=${1}
+
+       assert isset address
+
+       echo "${address%%/*}"
+}
+
+function ip_get_prefix() {
+       local address=${1}
+
+       assert isset address
+
+       echo "${address##*/}"
+}
+
+function ip_detect_protocol() {
+       local address=${1}
+
+       assert isset address
+
+       local protocol
+       for protocol in ipv4 ipv6; do
+               if ${protocol}_is_valid ${address}; then
+                       echo "${protocol}"
+                       return ${EXIT_OK}
+               fi
+       done
+
+       return ${EXIT_ERROR}
+}