Merge from trunk

[plcapi.git] / trunk / PLC / Methods / GenerateNodeConfFile.py

diff --git a/trunk/PLC/Methods/GenerateNodeConfFile.py b/trunk/PLC/Methods/GenerateNodeConfFile.py
new file mode 100644 (file)
index 0000000..0b5cf8e
--- /dev/null
+++ b/trunk/PLC/Methods/GenerateNodeConfFile.py
@@ -0,0 +1,107 @@
+import random
+import base64
+
+from PLC.Faults import *
+from PLC.Method import Method
+from PLC.Parameter import Parameter, Mixed
+from PLC.Nodes import Node, Nodes
+from PLC.NodeNetworks import NodeNetwork, NodeNetworks
+from PLC.Auth import Auth
+
+class GenerateNodeConfFile(Method):
+    """
+    Creates a new node configuration file if all network settings are
+    present. This function will generate a new node key for the
+    specified node, effectively invalidating any old configuration
+    files.
+
+    Non-admins can only generate files for nodes at their sites.
+
+    Returns the contents of the file if successful, faults otherwise.
+    """
+
+    roles = ['admin', 'pi', 'tech']
+
+    accepts = [
+        Auth(),
+        Mixed(Node.fields['node_id'],
+              Node.fields['hostname']),
+       Parameter(bool, "True if you want to regenerate node key")
+        ]
+
+    returns = Parameter(str, "Node configuration file")
+
+    def call(self, auth, node_id_or_hostname, regenerate_node_key = True):
+        # Get node information
+        nodes = Nodes(self.api, [node_id_or_hostname])
+        if not nodes:
+            raise PLCInvalidArgument, "No such node"
+        node = nodes[0]
+
+        if node['peer_id'] is not None:
+            raise PLCInvalidArgument, "Not a local node"
+
+        # If we are not an admin, make sure that the caller is a
+        # member of the site at which the node is located.
+        if 'admin' not in self.caller['roles']:
+            if node['site_id'] not in self.caller['site_ids']:
+                raise PLCPermissionDenied, "Not allowed to generate a configuration file for that node"
+
+       # Get node networks for this node
+        primary = None
+        nodenetworks = NodeNetworks(self.api, node['nodenetwork_ids'])
+        for nodenetwork in nodenetworks:
+            if nodenetwork['is_primary']:
+                primary = nodenetwork
+                break
+        if primary is None:
+            raise PLCInvalidArgument, "No primary network configured"
+
+        # Split hostname into host and domain parts
+        parts = node['hostname'].split(".", 1)
+        if len(parts) < 2:
+            raise PLCInvalidArgument, "Node hostname is invalid"
+        host = parts[0]
+        domain = parts[1]
+
+       if regenerate_node_key:
+            # Generate 32 random bytes
+            bytes = random.sample(xrange(0, 256), 32)
+            # Base64 encode their string representation
+            node['key'] = base64.b64encode("".join(map(chr, bytes)))
+            # XXX Boot Manager cannot handle = in the key
+            node['key'] = node['key'].replace("=", "")
+            # Save it
+            node.sync()
+
+        # Generate node configuration file suitable for BootCD
+        file = ""
+
+        file += 'NODE_ID="%d"\n' % node['node_id']
+        file += 'NODE_KEY="%s"\n' % node['key']
+
+        if primary['mac']:
+            file += 'NET_DEVICE="%s"\n' % primary['mac'].lower()
+
+        file += 'IP_METHOD="%s"\n' % primary['method']
+
+        if primary['method'] == 'static':
+            file += 'IP_ADDRESS="%s"\n' % primary['ip']
+            file += 'IP_GATEWAY="%s"\n' % primary['gateway']
+            file += 'IP_NETMASK="%s"\n' % primary['netmask']
+            file += 'IP_NETADDR="%s"\n' % primary['network']
+            file += 'IP_BROADCASTADDR="%s"\n' % primary['broadcast']
+            file += 'IP_DNS1="%s"\n' % primary['dns1']
+            file += 'IP_DNS2="%s"\n' % (primary['dns2'] or "")
+
+        file += 'HOST_NAME="%s"\n' % host
+        file += 'DOMAIN_NAME="%s"\n' % domain
+
+        for nodenetwork in nodenetworks:
+            if nodenetwork['method'] == 'ipmi':
+                file += 'IPMI_ADDRESS="%s"\n' % nodenetwork['ip']
+                if nodenetwork['mac']:
+                    file += 'IPMI_MAC="%s"\n' % nodenetwork['mac'].lower()
+                break
+
+        return file