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+ <h1>Source code for nepi.resources.linux.tap</h1><div class="highlight"><pre>
+<span class="c">#</span>
+<span class="c"># NEPI, a framework to manage network experiments</span>
+<span class="c"># Copyright (C) 2013 INRIA</span>
+<span class="c">#</span>
+<span class="c"># This program is free software: you can redistribute it and/or modify</span>
+<span class="c"># it under the terms of the GNU General Public License version 2 as</span>
+<span class="c"># published by the Free Software Foundation;</span>
+<span class="c">#</span>
+<span class="c"># This program is distributed in the hope that it will be useful,</span>
+<span class="c"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
+<span class="c"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
+<span class="c"># GNU General Public License for more details.</span>
+<span class="c">#</span>
+<span class="c"># You should have received a copy of the GNU General Public License</span>
+<span class="c"># along with this program. If not, see <http://www.gnu.org/licenses/>.</span>
+<span class="c">#</span>
+<span class="c"># Author: Alina Quereilhac <alina.quereilhac@inria.fr></span>
+
+<span class="kn">from</span> <span class="nn">nepi.execution.attribute</span> <span class="kn">import</span> <span class="n">Attribute</span><span class="p">,</span> <span class="n">Flags</span><span class="p">,</span> <span class="n">Types</span>
+<span class="kn">from</span> <span class="nn">nepi.execution.resource</span> <span class="kn">import</span> <span class="n">clsinit_copy</span><span class="p">,</span> <span class="n">ResourceState</span>
+<span class="kn">from</span> <span class="nn">nepi.resources.linux.application</span> <span class="kn">import</span> <span class="n">LinuxApplication</span>
+<span class="kn">from</span> <span class="nn">nepi.resources.linux.node</span> <span class="kn">import</span> <span class="n">LinuxNode</span>
+<span class="kn">from</span> <span class="nn">nepi.util.timefuncs</span> <span class="kn">import</span> <span class="n">tnow</span><span class="p">,</span> <span class="n">tdiffsec</span>
+
+<span class="kn">import</span> <span class="nn">os</span>
+<span class="kn">import</span> <span class="nn">time</span>
+
+<span class="n">PYTHON_VSYS_VERSION</span> <span class="o">=</span> <span class="s">"1.0"</span>
+
+<span class="nd">@clsinit_copy</span>
+<div class="viewcode-block" id="LinuxTap"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap">[docs]</a><span class="k">class</span> <span class="nc">LinuxTap</span><span class="p">(</span><span class="n">LinuxApplication</span><span class="p">):</span>
+ <span class="n">_rtype</span> <span class="o">=</span> <span class="s">"linux::Tap"</span>
+ <span class="n">_help</span> <span class="o">=</span> <span class="s">"Creates a TAP device on a Linux host"</span>
+
+ <span class="n">IFF_TUN</span> <span class="o">=</span> <span class="mh">0x0001</span>
+ <span class="n">IFF_TAP</span> <span class="o">=</span> <span class="mh">0x0002</span>
+
+ <span class="nd">@classmethod</span>
+ <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
+ <span class="n">ip</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"ip"</span><span class="p">,</span> <span class="s">"IPv4 Address"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">mac</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"mac"</span><span class="p">,</span> <span class="s">"MAC Address"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">prefix</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">,</span> <span class="s">"IPv4 network prefix"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">mtu</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"mtu"</span><span class="p">,</span> <span class="s">"Maximum transmition unit for device"</span><span class="p">,</span>
+ <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Integer</span><span class="p">)</span>
+
+ <span class="n">devname</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">,</span>
+ <span class="s">"Name of the network interface (e.g. eth0, wlan0, etc)"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">NoWrite</span><span class="p">)</span>
+
+ <span class="n">up</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"up"</span><span class="p">,</span> <span class="s">"Link up"</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="bp">True</span><span class="p">,</span>
+ <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Bool</span><span class="p">)</span>
+
+ <span class="n">pointopoint</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"pointopoint"</span><span class="p">,</span> <span class="s">"Peer IP address"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">txqueuelen</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"txqueuelen"</span><span class="p">,</span> <span class="s">"Length of transmission queue"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">txqueuelen</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"txqueuelen"</span><span class="p">,</span> <span class="s">"Length of transmission queue"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">gre_key</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"greKey"</span><span class="p">,</span>
+ <span class="s">"GRE key to be used to configure GRE tunnel"</span><span class="p">,</span>
+ <span class="n">default</span> <span class="o">=</span> <span class="s">"1"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">gre_remote</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"greRemote"</span><span class="p">,</span>
+ <span class="s">"Public IP of remote endpoint for GRE tunnel"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">pi</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"pi"</span><span class="p">,</span> <span class="s">"Add PI (protocol information) header"</span><span class="p">,</span>
+ <span class="n">default</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span>
+ <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Bool</span><span class="p">)</span>
+
+ <span class="n">tear_down</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"tearDown"</span><span class="p">,</span>
+ <span class="s">"Bash script to be executed before releasing the resource"</span><span class="p">,</span>
+ <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
+
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">ip</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">mac</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">prefix</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">mtu</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">devname</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">up</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">pointopoint</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">txqueuelen</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">gre_key</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">gre_remote</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">pi</span><span class="p">)</span>
+ <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">tear_down</span><span class="p">)</span>
+
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">LinuxTap</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_gre_enabled</span> <span class="o">=</span> <span class="bp">None</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_vif_prefix</span> <span class="o">=</span> <span class="s">"tap"</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_vif_type</span> <span class="o">=</span> <span class="s">"IFF_TAP"</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_vif_type_flag</span> <span class="o">=</span> <span class="n">LinuxTap</span><span class="o">.</span><span class="n">IFF_TAP</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_home</span> <span class="o">=</span> <span class="s">"</span><span class="si">%s</span><span class="s">-</span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">vif_prefix</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span><span class="p">)</span>
+
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTap.node"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.node">[docs]</a> <span class="k">def</span> <span class="nf">node</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">LinuxNode</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
+ <span class="k">if</span> <span class="n">node</span><span class="p">:</span> <span class="k">return</span> <span class="n">node</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="s">"linux::TAP/TUN devices must be connected to a linux::Node"</span>
+</div>
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTap.gre_enabled"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.gre_enabled">[docs]</a> <span class="k">def</span> <span class="nf">gre_enabled</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_gre_enabled</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
+ <span class="kn">from</span> <span class="nn">nepi.resources.linux.gretunnel</span> <span class="kn">import</span> <span class="n">LinuxGRETunnel</span>
+ <span class="n">gre</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">LinuxGRETunnel</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
+ <span class="k">if</span> <span class="n">gre</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_gre_enabled</span> <span class="o">=</span> <span class="bp">True</span>
+
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_gre_enabled</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.upload_sources"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.upload_sources">[docs]</a> <span class="k">def</span> <span class="nf">upload_sources</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">scripts</span> <span class="o">=</span> <span class="p">[]</span>
+
+ <span class="c"># udp-connect python script</span>
+ <span class="n">udp_connect</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span> <span class="s">"scripts"</span><span class="p">,</span>
+ <span class="s">"linux-udp-connect.py"</span><span class="p">)</span>
+
+ <span class="n">scripts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">udp_connect</span><span class="p">)</span>
+
+ <span class="n">tap_create</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span> <span class="s">"scripts"</span><span class="p">,</span>
+ <span class="s">"linux-tap-create.py"</span><span class="p">)</span>
+
+ <span class="n">scripts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">tap_create</span><span class="p">)</span>
+
+ <span class="n">tap_delete</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span> <span class="s">"scripts"</span><span class="p">,</span>
+ <span class="s">"linux-tap-delete.py"</span><span class="p">)</span>
+
+ <span class="n">scripts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">tap_delete</span><span class="p">)</span>
+
+ <span class="c"># tunnel creation python script</span>
+ <span class="n">tunchannel</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span> <span class="s">"scripts"</span><span class="p">,</span>
+ <span class="s">"tunchannel.py"</span><span class="p">)</span>
+
+ <span class="n">scripts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">tunchannel</span><span class="p">)</span>
+
+ <span class="c"># Upload scripts</span>
+ <span class="n">scripts</span> <span class="o">=</span> <span class="s">";"</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">scripts</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">scripts</span><span class="p">,</span>
+ <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">),</span>
+ <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+
+ <span class="c"># upload stop.sh script</span>
+ <span class="n">stop_command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_stop_command</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">stop_command</span><span class="p">,</span>
+ <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">,</span> <span class="s">"stop.sh"</span><span class="p">),</span>
+ <span class="n">text</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
+ <span class="c"># Overwrite file every time. </span>
+ <span class="c"># The stop.sh has the path to the socket, which should change</span>
+ <span class="c"># on every experiment run.</span>
+ <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+</div>
+ <span class="k">def</span> <span class="nf">upload_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="c"># If GRE mode is enabled, TAP creation is delayed until the</span>
+ <span class="c"># tunnel is established</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">gre_enabled</span><span class="p">:</span>
+ <span class="c"># We want to make sure the device is up and running</span>
+ <span class="c"># before the deploy is over, so we execute the </span>
+ <span class="c"># start script now and wait until it finishes. </span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"command"</span><span class="p">)</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">,</span> <span class="s">"start.sh"</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">run_and_wait</span><span class="p">(</span><span class="n">command</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">,</span>
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
+ <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+
+<div class="viewcode-block" id="LinuxTap.upload_start_command"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.upload_start_command">[docs]</a> <span class="k">def</span> <span class="nf">upload_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="c"># If GRE mode is enabled, TAP creation is delayed until the</span>
+ <span class="c"># tunnel is established</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">gre_enabled</span><span class="p">:</span>
+ <span class="c"># Overwrite file every time. </span>
+ <span class="c"># The start.sh has the path to the socket, wich should change</span>
+ <span class="c"># on every experiment run.</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"command"</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"Uploading command '</span><span class="si">%s</span><span class="s">'"</span> <span class="o">%</span> <span class="n">command</span><span class="p">)</span>
+
+ <span class="c"># replace application specific paths in the command</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="c"># replace application specific paths in the environment</span>
+ <span class="n">env</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"env"</span><span class="p">)</span>
+ <span class="n">env</span> <span class="o">=</span> <span class="n">env</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">env</span><span class="p">)</span>
+
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">,</span> <span class="s">"start.sh"</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload_command</span><span class="p">(</span><span class="n">command</span><span class="p">,</span>
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
+ <span class="n">env</span> <span class="o">=</span> <span class="n">env</span><span class="p">,</span>
+ <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+
+ <span class="c"># We want to make sure the device is up and running</span>
+ <span class="c"># before the deploy finishes, so we execute now the </span>
+ <span class="c"># start script. We run it in background, because the </span>
+ <span class="c"># TAP will live for as long as the process that </span>
+ <span class="c"># created it is running, and wait until the TAP </span>
+ <span class="c"># is created. </span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_run_in_background</span><span class="p">()</span>
+ </div>
+<div class="viewcode-block" id="LinuxTap.do_deploy"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.do_deploy">[docs]</a> <span class="k">def</span> <span class="nf">do_deploy</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">state</span> <span class="o"><</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">PROVISIONED</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">schedule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">reschedule_delay</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">deploy</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">gre_enabled</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_vif_prefix</span> <span class="o">=</span> <span class="s">"gre"</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_home</span> <span class="o">=</span> <span class="s">"</span><span class="si">%s</span><span class="s">-</span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">vif_prefix</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">,</span> <span class="s">"</span><span class="si">%s%d</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">vif_prefix</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span><span class="p">))</span>
+
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"command"</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"command"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_start_command</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"depends"</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"depends"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dependencies</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"install"</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"install"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_install</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">set_ready</span><span class="p">()</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.do_start"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.do_start">[docs]</a> <span class="k">def</span> <span class="nf">do_start</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">READY</span><span class="p">:</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"command"</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"Starting command '</span><span class="si">%s</span><span class="s">'"</span> <span class="o">%</span> <span class="n">command</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">set_started</span><span class="p">()</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to execute command '</span><span class="si">%s</span><span class="s">'"</span> <span class="o">%</span> <span class="n">command</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.do_stop"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.do_stop">[docs]</a> <span class="k">def</span> <span class="nf">do_stop</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'command'</span><span class="p">)</span> <span class="ow">or</span> <span class="s">''</span>
+
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">STARTED</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"Stopping command '</span><span class="si">%s</span><span class="s">'"</span> <span class="o">%</span> <span class="n">command</span><span class="p">)</span>
+
+ <span class="n">command</span> <span class="o">=</span> <span class="s">"bash </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">,</span> <span class="s">"stop.sh"</span><span class="p">)</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">execute_command</span><span class="p">(</span><span class="n">command</span><span class="p">,</span>
+ <span class="n">blocking</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="n">err</span><span class="p">:</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to stop command '</span><span class="si">%s</span><span class="s">' "</span> <span class="o">%</span> <span class="n">command</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">set_stopped</span><span class="p">()</span>
+</div>
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTap.state"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.state">[docs]</a> <span class="k">def</span> <span class="nf">state</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">state_check_delay</span> <span class="o">=</span> <span class="mf">0.5</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="o">==</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">STARTED</span> <span class="ow">and</span> \
+ <span class="n">tdiffsec</span><span class="p">(</span><span class="n">tnow</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">_last_state_check</span><span class="p">)</span> <span class="o">></span> <span class="n">state_check_delay</span><span class="p">:</span>
+
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">):</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="s">"ifconfig"</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="n">out</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">))</span> <span class="o">==</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
+ <span class="c"># tap is not running is not running (socket not found)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set_stopped</span><span class="p">()</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">_last_state_check</span> <span class="o">=</span> <span class="n">tnow</span><span class="p">()</span>
+
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_state</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.do_release"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.do_release">[docs]</a> <span class="k">def</span> <span class="nf">do_release</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="c"># Node needs to wait until all associated RMs are released</span>
+ <span class="c"># to be released</span>
+ <span class="kn">from</span> <span class="nn">nepi.resources.linux.tunnel</span> <span class="kn">import</span> <span class="n">LinuxTunnel</span>
+ <span class="n">rms</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">LinuxTunnel</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
+
+ <span class="k">for</span> <span class="n">rm</span> <span class="ow">in</span> <span class="n">rms</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">rm</span><span class="o">.</span><span class="n">state</span> <span class="o"><</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">STOPPED</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">schedule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">reschedule_delay</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">release</span><span class="p">)</span>
+ <span class="k">return</span>
+
+ <span class="nb">super</span><span class="p">(</span><span class="n">LinuxTap</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_release</span><span class="p">()</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.gre_connect"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.gre_connect">[docs]</a> <span class="k">def</span> <span class="nf">gre_connect</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">connection_app_home</span><span class="p">,</span>
+ <span class="n">connection_run_home</span><span class="p">):</span>
+ <span class="n">gre_connect_command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_gre_connect_command</span><span class="p">(</span><span class="n">remote_endpoint</span><span class="p">,</span>
+ <span class="n">connection_app_home</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">)</span>
+
+ <span class="c"># upload command to connect.sh script</span>
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">connection_app_home</span><span class="p">,</span> <span class="s">"gre-connect.sh"</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload_command</span><span class="p">(</span><span class="n">gre_connect_command</span><span class="p">,</span>
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
+ <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+
+ <span class="c"># invoke connect script</span>
+ <span class="n">cmd</span> <span class="o">=</span> <span class="s">"bash </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">shfile</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">pidfile</span> <span class="o">=</span> <span class="s">"gre_connect_pidfile"</span><span class="p">,</span>
+ <span class="n">stdout</span> <span class="o">=</span> <span class="s">"gre_connect_stdout"</span><span class="p">,</span>
+ <span class="n">stderr</span> <span class="o">=</span> <span class="s">"gre_connect_stderr"</span><span class="p">,</span>
+ <span class="p">)</span>
+
+ <span class="c"># check if execution errors occurred</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to connect endpoints "</span>
+
+ <span class="k">if</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">()</span> <span class="ow">or</span> <span class="n">err</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+ <span class="c"># Wait for pid file to be generated</span>
+ <span class="n">pid</span><span class="p">,</span> <span class="n">ppid</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">wait_pid</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">pidfile</span> <span class="o">=</span> <span class="s">"gre_connect_pidfile"</span><span class="p">)</span>
+
+ <span class="c"># If the process is not running, check for error information</span>
+ <span class="c"># on the remote machine</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">pid</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">ppid</span><span class="p">:</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">check_errors</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">stderr</span> <span class="o">=</span> <span class="s">"gre_connect_stderr"</span><span class="p">)</span>
+
+ <span class="c"># Out is what was written in the stderr file</span>
+ <span class="k">if</span> <span class="n">err</span><span class="p">:</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to start command '</span><span class="si">%s</span><span class="s">' "</span> <span class="o">%</span> <span class="n">command</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+ <span class="k">return</span> <span class="bp">True</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.initiate_udp_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.initiate_udp_connection">[docs]</a> <span class="k">def</span> <span class="nf">initiate_udp_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">connection_app_home</span><span class="p">,</span>
+ <span class="n">connection_run_home</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">):</span>
+ <span class="n">port</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">udp_connect</span><span class="p">(</span><span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">connection_app_home</span><span class="p">,</span>
+ <span class="n">connection_run_home</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">port</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.udp_connect"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.udp_connect">[docs]</a> <span class="k">def</span> <span class="nf">udp_connect</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">connection_app_home</span><span class="p">,</span>
+ <span class="n">connection_run_home</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">):</span>
+ <span class="n">udp_connect_command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_udp_connect_command</span><span class="p">(</span>
+ <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">connection_app_home</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">)</span>
+
+ <span class="c"># upload command to connect.sh script</span>
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">connection_app_home</span><span class="p">,</span> <span class="s">"udp-connect.sh"</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload_command</span><span class="p">(</span><span class="n">udp_connect_command</span><span class="p">,</span>
+ <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
+ <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+
+ <span class="c"># invoke connect script</span>
+ <span class="n">cmd</span> <span class="o">=</span> <span class="s">"bash </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">shfile</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">pidfile</span> <span class="o">=</span> <span class="s">"udp_connect_pidfile"</span><span class="p">,</span>
+ <span class="n">stdout</span> <span class="o">=</span> <span class="s">"udp_connect_stdout"</span><span class="p">,</span>
+ <span class="n">stderr</span> <span class="o">=</span> <span class="s">"udp_connect_stderr"</span><span class="p">,</span>
+ <span class="p">)</span>
+
+ <span class="c"># check if execution errors occurred</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">"Failed to connect endpoints "</span>
+
+ <span class="k">if</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">():</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+ <span class="c"># Wait for pid file to be generated</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_pid</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ppid</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">wait_pid</span><span class="p">(</span>
+ <span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">pidfile</span> <span class="o">=</span> <span class="s">"udp_connect_pidfile"</span><span class="p">)</span>
+
+ <span class="c"># If the process is not running, check for error information</span>
+ <span class="c"># on the remote machine</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pid</span> <span class="ow">or</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ppid</span><span class="p">:</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">check_errors</span><span class="p">(</span>
+ <span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">stderr</span> <span class="o">=</span> <span class="s">"udp_connect_stderr"</span><span class="p">)</span>
+
+ <span class="c"># Out is what was written in the stderr file</span>
+ <span class="k">if</span> <span class="n">err</span><span class="p">:</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to start command '</span><span class="si">%s</span><span class="s">' "</span> <span class="o">%</span> <span class="n">command</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wait_file</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span> <span class="s">"local_port"</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.establish_udp_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.establish_udp_connection">[docs]</a> <span class="k">def</span> <span class="nf">establish_udp_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span>
+ <span class="n">connection_app_home</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">,</span> <span class="n">port</span><span class="p">):</span>
+ <span class="c"># upload remote port number to file</span>
+ <span class="n">rem_port</span> <span class="o">=</span> <span class="s">"</span><span class="si">%s</span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">port</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">rem_port</span><span class="p">,</span>
+ <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span> <span class="s">"remote_port"</span><span class="p">),</span>
+ <span class="n">text</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
+ <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.verify_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.verify_connection">[docs]</a> <span class="k">def</span> <span class="nf">verify_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span>
+ <span class="n">connection_app_home</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">):</span>
+
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wait_file</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span> <span class="s">"ret_file"</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.terminate_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.terminate_connection">[docs]</a> <span class="k">def</span> <span class="nf">terminate_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span>
+ <span class="n">connection_app_home</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">):</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pid</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ppid</span><span class="p">:</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">kill</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_pid</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ppid</span><span class="p">,</span>
+ <span class="n">sudo</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+
+ <span class="c"># check if execution errors occurred</span>
+ <span class="k">if</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">()</span> <span class="ow">and</span> <span class="n">err</span><span class="p">:</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to Kill the Tap"</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.check_status"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.check_status">[docs]</a> <span class="k">def</span> <span class="nf">check_status</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">status</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_pid</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ppid</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.wait_file"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.wait_file">[docs]</a> <span class="k">def</span> <span class="nf">wait_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">home</span><span class="p">,</span> <span class="n">filename</span><span class="p">):</span>
+ <span class="sd">""" Waits until file on endpoint is generated """</span>
+ <span class="n">result</span> <span class="o">=</span> <span class="bp">None</span>
+ <span class="n">delay</span> <span class="o">=</span> <span class="mf">1.0</span>
+
+ <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">xrange</span><span class="p">(</span><span class="mi">20</span><span class="p">):</span>
+ <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">check_output</span><span class="p">(</span><span class="n">home</span><span class="p">,</span> <span class="n">filename</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">out</span><span class="p">:</span>
+ <span class="n">result</span> <span class="o">=</span> <span class="n">out</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
+ <span class="k">break</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">delay</span><span class="p">)</span>
+ <span class="n">delay</span> <span class="o">=</span> <span class="n">delay</span> <span class="o">*</span> <span class="mf">1.5</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">"Couldn't retrieve </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">filename</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+ <span class="k">return</span> <span class="n">result</span>
+</div>
+ <span class="nd">@property</span>
+ <span class="k">def</span> <span class="nf">_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">gre_enabled</span><span class="p">:</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[</span><span class="s">"sudo -S "</span><span class="p">]</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"PYTHONPATH=$PYTHONPATH:${SRC}"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"python ${SRC}/linux-tap-create.py"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-t </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">vif_type</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-a </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">))</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-n </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">))</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-N </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">))</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-S </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">sock_name</span><span class="p">)</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"pi"</span><span class="p">):</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-p"</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="s">" "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="nd">@property</span>
+ <span class="k">def</span> <span class="nf">_stop_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">gre_enabled</span><span class="p">:</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_stop_gre_command</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[</span><span class="s">"sudo -S "</span><span class="p">]</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"PYTHONPATH=$PYTHONPATH:${SRC}"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"python ${SRC}/linux-tap-delete.py"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-N </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">))</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-S </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">sock_name</span><span class="p">)</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="s">" "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">command</span>
+
+ <span class="k">def</span> <span class="nf">_gre_connect_command</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span>
+ <span class="n">connection_app_home</span><span class="p">,</span> <span class="n">connecrion_app_home</span><span class="p">):</span>
+ <span class="c"># Set the remote endpoint to (private) device IP</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"pointopoint"</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">))</span>
+ <span class="c">## public node IP</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"greRemote"</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">))</span>
+
+ <span class="c"># Generate GRE connect command</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[</span><span class="s">"("</span><span class="p">]</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_stop_gre_command</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">") ; ("</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_start_gre_command</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">")"</span><span class="p">)</span>
+
+ <span class="n">command</span> <span class="o">=</span> <span class="s">" "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">command</span>
+
+ <span class="nd">@property</span>
+ <span class="k">def</span> <span class="nf">_start_gre_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S modprobe ip_gre"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S ip tunnel add </span><span class="si">%s</span><span class="s"> mode gre remote </span><span class="si">%s</span><span class="s"> local </span><span class="si">%s</span><span class="s"> ttl 255 csum key </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">),</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"greRemote"</span><span class="p">),</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">),</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"greKey"</span><span class="p">)</span>
+ <span class="p">))</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S ip addr add </span><span class="si">%s</span><span class="s">/</span><span class="si">%s</span><span class="s"> peer </span><span class="si">%s</span><span class="s">/</span><span class="si">%s</span><span class="s"> dev </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">),</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">),</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"pointopoint"</span><span class="p">),</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">),</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">),</span>
+ <span class="p">))</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S ip link set </span><span class="si">%s</span><span class="s"> up "</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">))</span>
+
+ <span class="k">return</span> <span class="s">";"</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="nd">@property</span>
+ <span class="k">def</span> <span class="nf">_stop_gre_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S modprobe -r ip_gre"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S ip link set down dev </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">),</span>
+ <span class="p">))</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S ip link del dev </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">),</span>
+ <span class="p">))</span>
+
+ <span class="k">return</span> <span class="s">";"</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="k">def</span> <span class="nf">_udp_connect_command</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span>
+ <span class="n">connection_app_home</span><span class="p">,</span> <span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">):</span>
+
+ <span class="c"># Set the remote endpoint to the IP of the device</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"pointopoint"</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">))</span>
+
+ <span class="c"># Public IP of the remote NODE to stablish tunnel</span>
+ <span class="n">remote_ip</span> <span class="o">=</span> <span class="n">remote_endpoint</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">)</span>
+ <span class="n">local_ip</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"ip"</span><span class="p">)</span>
+
+ <span class="n">local_port_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="s">"local_port"</span><span class="p">)</span>
+
+ <span class="n">remote_port_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="s">"remote_port"</span><span class="p">)</span>
+
+ <span class="n">ret_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">connection_run_home</span><span class="p">,</span>
+ <span class="s">"ret_file"</span><span class="p">)</span>
+
+ <span class="c"># Generate UDP connect command</span>
+ <span class="c"># Use the start command to configure TAP with peer info</span>
+ <span class="n">start_command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_start_command</span>
+
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[</span><span class="s">""</span><span class="p">]</span>
+ <span class="c"># Use pl-vid-udp-connect.py to stablish the tunnel between endpoints</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"PYTHONPATH=$PYTHONPATH:${SRC}"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"python ${SRC}/linux-udp-connect.py"</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-t </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">vif_type</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-S </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">sock_name</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-p </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">local_port_file</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-P </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">remote_port_file</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-o </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">local_ip</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-O </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">remote_ip</span><span class="p">)</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-R </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">ret_file</span><span class="p">)</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"pi"</span><span class="p">):</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-n"</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">cipher</span><span class="p">:</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-c </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">cipher</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">cipher_key</span><span class="p">:</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-k </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">cipher_key</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">txqueuelen</span><span class="p">:</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-q </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">txqueuelen</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">bwlimit</span><span class="p">:</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"-b </span><span class="si">%s</span><span class="s"> "</span> <span class="o">%</span> <span class="n">bwlimit</span><span class="p">)</span>
+
+ <span class="n">command</span> <span class="o">=</span> <span class="s">" "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">command</span>
+
+ <span class="nd">@property</span>
+ <span class="k">def</span> <span class="nf">_dependencies</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="s">"mercurial make gcc"</span>
+
+ <span class="nd">@property</span>
+ <span class="k">def</span> <span class="nf">_install</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="c"># Install python-vsys and python-passfd</span>
+ <span class="n">install_passfd</span> <span class="o">=</span> <span class="p">(</span> <span class="s">" ( python -c 'import passfd' ) "</span>
+ <span class="s">" || "</span>
+ <span class="s">" ( "</span>
+ <span class="s">" cd ${SRC} ; "</span>
+ <span class="s">" hg clone http://nepi.inria.fr/code/python-passfd ; "</span>
+ <span class="s">" cd python-passfd ; "</span>
+ <span class="s">" make all ; "</span>
+ <span class="s">" sudo -S make install "</span>
+ <span class="s">" )"</span> <span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">install_passfd</span>
+
+ <span class="k">def</span> <span class="nf">valid_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
+ <span class="c"># TODO: Validate!</span>
+ <span class="k">return</span> <span class="bp">True</span>
+
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTap.vif_type"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.vif_type">[docs]</a> <span class="k">def</span> <span class="nf">vif_type</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_vif_type</span>
+</div>
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTap.vif_type_flag"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.vif_type_flag">[docs]</a> <span class="k">def</span> <span class="nf">vif_type_flag</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_vif_type_flag</span>
+ </div>
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTap.vif_prefix"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.vif_prefix">[docs]</a> <span class="k">def</span> <span class="nf">vif_prefix</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_vif_prefix</span>
+</div>
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTap.sock_name"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.sock_name">[docs]</a> <span class="k">def</span> <span class="nf">sock_name</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">,</span> <span class="s">"</span><span class="si">%s</span><span class="s">.sock"</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">vif_prefix</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxTap.valid_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.tap.LinuxTap.valid_connection">[docs]</a> <span class="k">def</span> <span class="nf">valid_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
+ <span class="c"># TODO: Validate!</span>
+ <span class="k">return</span> <span class="bp">True</span>
+</pre></div></div></div>
+
+ </div>
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