From e110354524568f4365078ca0a37d9b44d57596a6 Mon Sep 17 00:00:00 2001
From: Felix Richter <github@syntax-fehler.de>
Date: Thu, 19 May 2011 21:04:56 +0200
Subject: cleaned up the script mess

README: added README files for the whole directory as well as the subdirs
adv_graphgen/* : contains the graphgen files
tinc_setup/* : contains the build script and the bootstrap script
tinc_multicast/* : contains the multicast script
---
 .scripts/adv_graphgen/README      | 28 +++++++++++++
 .scripts/adv_graphgen/parse.py    | 85 +++++++++++++++++++++++++++++++++++++++
 .scripts/adv_graphgen/sanitize.sh | 13 ++++++
 3 files changed, 126 insertions(+)
 create mode 100644 .scripts/adv_graphgen/README
 create mode 100755 .scripts/adv_graphgen/parse.py
 create mode 100755 .scripts/adv_graphgen/sanitize.sh

(limited to '.scripts/adv_graphgen')

diff --git a/.scripts/adv_graphgen/README b/.scripts/adv_graphgen/README
new file mode 100644
index 00000000..082e0f2b
--- /dev/null
+++ b/.scripts/adv_graphgen/README
@@ -0,0 +1,28 @@
+The folder contains a number of scripts which provide a convenient way to
+generate advanced graphs from the SIGUSR2 output of tinc.
+
+it currently contains the following files:
+
+sanitize.sh:
+    wrapper arond parse.py which filters the syslog file for all tinc
+    related lines and removes the status informations: 
+    this means that
+    <code>
+    May 19 20:40:44 servarch dnsmasq[5382]: reading /etc/resolv.conf
+    May 19 20:41:38 servarch tinc.retiolum[4780]: Error looking up pa-sharepoint.informatik.ba-stuttgart.de port 655: Name or service not known
+    </code>
+    becomes
+    <code>
+    Error looking up pa-sharepoint.informatik.ba-stuttgart.de port 655: Name or service not known
+    </code>
+    and so on.
+    It also provides a wrapper around graphviz which automagically
+    generates graphs from the produced graph file
+
+parse.py:
+    reads from stdin the sanitized syslog file and prints a valid dot file
+    from the given output.
+    The parser module may also produce any other output (e.g. for dns
+    entries and so on) you will need to actually read and modify the source
+    in order to be able to do this. ~May the source be with you~
+    
diff --git a/.scripts/adv_graphgen/parse.py b/.scripts/adv_graphgen/parse.py
new file mode 100755
index 00000000..27fe3a99
--- /dev/null
+++ b/.scripts/adv_graphgen/parse.py
@@ -0,0 +1,85 @@
+#!/usr/bin/python2
+
+import sys
+""" TODO: Refactoring needed to pull the edges out of the node structures again,
+it should be easier to handle both structures"""
+
+def write_digraph(nodes):
+  """
+  writes the complete digraph in dot format
+  """
+  print ('digraph retiolum {')
+  print ('  node[shape=box,style=filled,fillcolor=grey]')
+  generate_stats(nodes)
+  merge_edges(nodes)
+  for k,v in nodes.iteritems():
+    write_node(k,v)
+  print ('}')
+def generate_stats(nodes):
+  """ Generates some statistics of the network and nodes
+  """
+  for k,v in nodes.iteritems():
+    v['num_conns'] = len(v.get('to',[]))
+
+def merge_edges(nodes):
+  """ merge back and forth edges into one
+  DESTRUCTS the current structure by deleting "connections" in the nodes
+
+  """
+  for k,v in nodes.iteritems():
+    for con in v.get('to',[]):
+      for i,secon in enumerate(nodes[con['name']].get('to',[])):
+        if k == secon['name']:
+          del (nodes[con['name']]['to'][i])
+          con['bidirectional'] = True
+
+
+def write_node(k,v):
+  """ writes a single node and its edges """
+  node = "  "+k+"[label=\""
+  node += k+"\\l"
+  node += "external:"+v['external-ip']+":"+v['external-port']+"\\l"
+  if v.has_key('num_conns'):
+    node += "Num Connects:"+str(v['num_conns'])+"\\l"
+  node += "internal:"+v['internal-ip']+"\\l\""
+  if v['external-ip'] == "MYSELF":
+    node += ",fillcolor=steelblue1"
+  node += "]"
+  print (node)
+  for con in v.get('to',[]):
+    edge = "  "+k+ " -> " +con['name'] + "[weight="+str(10/float(con['weight']))
+    if con.get('bidirectional',False):
+      edge += ",dir=both"
+    edge += "]"
+    print edge
+def parse_input():
+  nodes={}
+  for line in sys.stdin:
+    line = line.replace('\n','')
+    if line == 'Nodes:':
+      nodes={}
+      for line in sys.stdin:
+        if line == 'End of nodes.\n':
+          break
+        l = line.replace('\n','').split() #TODO unhack me
+        nodes[l[0]]= { 'external-ip': l[2], 'external-port' : l[4] }
+    if line == 'Subnet list:':
+      for line in sys.stdin:
+        if line == 'End of subnet list.\n':
+          break
+        l = line.replace('\n','').split() 
+        nodes[l[2]]['internal-ip'] = l[0].split('#')[0]
+    if line == 'Edges:':
+      edges = {}
+      for line in sys.stdin:
+        if line == 'End of edges.\n':
+          break
+        l = line.replace('\n','').split() 
+
+        if not nodes[l[0]].has_key('to') :
+          nodes[l[0]]['to'] = []
+        nodes[l[0]]['to'].append(
+            {'name':l[2],'addr':l[4],'port':l[6],'weight' : l[10] })
+  return nodes
+nodes = parse_input()
+write_digraph(nodes)
diff --git a/.scripts/adv_graphgen/sanitize.sh b/.scripts/adv_graphgen/sanitize.sh
new file mode 100755
index 00000000..88591b67
--- /dev/null
+++ b/.scripts/adv_graphgen/sanitize.sh
@@ -0,0 +1,13 @@
+GRAPH_SETTER1=dot
+GRAPH_SETTER2=circo
+LOG_FILE=/var/log/everything.log
+OPENER=/bin/true
+
+sudo pkill -USR2 tincd
+sudo sed -n '/tinc.retiolum/{s/.*tinc.retiolum\[[0-9]*\]: //gp}' $LOG_FILE |\
+    ./parse.py > retiolum.dot
+
+$GRAPH_SETTER1 -Tpng -o $1retiolum_1.png retiolum.dot
+$GRAPH_SETTER2 -Tpng -o $1retiolum_2.png retiolum.dot
+$OPENER retiolum_1.png &>/dev/null 
+rm retiolum.dot
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