3 This file is part of NetVis
4 Copyright @ 2008 Mikko Rasa, Mikkosoft Productions
5 Distributed unter the GPL
12 #include <netinet/ip.h>
13 #include <netinet/tcp.h>
14 #include <netinet/udp.h>
15 #include <linux/if_ether.h>
16 #include <msp/core/except.h>
17 #include <msp/debug/profilingscope.h>
18 #include <msp/gl/blend.h>
19 #include <msp/gl/framebuffer.h>
20 #include <msp/gl/immediate.h>
21 #include <msp/gl/matrix.h>
22 #include <msp/gl/misc.h>
23 #include <msp/gl/projection.h>
24 #include <msp/gl/texture2d.h>
25 #include <msp/gl/transform.h>
26 #include <msp/strings/formatter.h>
27 #include <msp/time/units.h>
28 #include <msp/time/utils.h>
38 NetVis::NetVis(int argc, char **argv):
44 max_visible_hosts(30),
50 throw UsageError("No interface given");
54 pcap = pcap_open_live(iface.c_str(), 128, true, 0, err);
58 if(pcap_setnonblock(pcap, true, err)==-1)
61 pcap_lookupnet(iface.c_str(), &localnet, &localnet_mask, err);
62 localnet = ntohl(localnet);
63 localnet_mask = ntohl(localnet_mask);
65 resolver = new Resolver;
67 wnd = new Graphics::SimpleGLWindow(1024, 768);
68 wnd->set_title("NetVis");
69 wnd->signal_close.connect(sigc::bind(sigc::mem_fun(this, &NetVis::exit), 0));
70 wnd->signal_key_press.connect(sigc::mem_fun(this, &NetVis::key_press));
73 GL::enable(GL::BLEND);
74 GL::blend_func(GL::SRC_ALPHA, GL::ONE_MINUS_SRC_ALPHA);
77 DataFile::load(*font, "dejavu-10.font");
90 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
92 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end(); ++i)
94 for(map<unsigned, Port *>::iterator i=ports.begin(); i!=ports.end(); ++i)
96 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
102 Msp::Time::TimeStamp t = Msp::Time::now();
103 Msp::Time::TimeDelta dt;
108 if(tick_t>fps_t+Msp::Time::sec)
110 fps = frames/((tick_t-fps_t)/Msp::Time::sec);
115 wnd->get_display().tick();
117 while(pcap_dispatch(pcap, -1, &capture_handler, reinterpret_cast<unsigned char *>(this))>0) ;
121 float min_activity = numeric_limits<float>::max();
122 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
125 min_activity = min(min_activity, i->second->get_activity());
127 float del_limit = pow(10, 6-0.1*(max_hosts-hosts.size()-disabled_hosts.size()));
128 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end();)
132 if(i->second->get_activity()>min_activity)
134 i->second->set_active(true);
136 disabled_hosts.erase(i++);
138 else if(i->second->get_activity()<del_limit)
141 disabled_hosts.erase(i++);
147 if(hosts.size()>max_visible_hosts)
149 list<float> activity;
150 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
151 activity.push_back(i->second->get_activity());
154 list<float>::iterator j = activity.begin();
155 advance(j, activity.size()-max_visible_hosts);
158 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end();)
160 if(i->second->get_activity()<limit)
162 i->second->set_active(false);
163 disabled_hosts.insert(*i);
171 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end();)
174 if((*i)->get_stale())
177 i = packets.erase(i);
189 void NetVis::render()
191 GL::clear(GL::COLOR_BUFFER_BIT);
193 GL::matrix_mode(GL::PROJECTION);
195 GL::ortho_centered(1024, 768);
196 GL::matrix_mode(GL::MODELVIEW);
199 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
202 GL::Immediate imm((GL::COLOR4_UBYTE, GL::VERTEX2));
203 imm.begin(GL::QUADS);
204 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
210 GL::translate(-500, 360, 0);
212 for(map<unsigned, Port *>::iterator i=ports.begin(); (i!=ports.end() && n<50); ++i, ++n)
215 GL::translate(0, -12, 0);
220 GL::translate(-500, -360, 0);
221 GL::scale_uniform(10);
222 font->draw_string(format("%d hosts", hosts.size()+disabled_hosts.size()));
223 GL::translate(0, -1.2, 0);
224 font->draw_string(format("%.2f fps", fps));
225 GL::Texture::unbind();
229 Host &NetVis::get_host(unsigned a)
231 map<unsigned, Host *>::iterator i = hosts.find(a);
235 i = disabled_hosts.find(a);
236 if(i!=disabled_hosts.end())
239 Host *host = new Host(*this, a);
240 if((a&localnet_mask)==localnet)
241 host->set_local(true);
242 resolver->push(host);
243 host->set_position(Vector2(rand()*400.0/RAND_MAX-200.0, rand()*400.0/RAND_MAX-200.0));
248 const Port &NetVis::get_port(unsigned number)
250 map<unsigned, Port *>::iterator i = ports.find(number);
253 Port *port = new Port(*this, number);
254 ports[number] = port;
258 void NetVis::key_press(unsigned key, unsigned, wchar_t)
261 draw_labels = !draw_labels;
265 GL::set(GL_BLEND, blend);
269 void NetVis::capture_handler(unsigned char *user, const pcap_pkthdr *, const unsigned char *data)
271 NetVis *self = reinterpret_cast<NetVis *>(user);
273 const ethhdr *eth = reinterpret_cast<const ethhdr *>(data);
274 if(ntohs(eth->h_proto)==ETH_P_IP)
276 const iphdr *ip = reinterpret_cast<const iphdr *>(eth+1);
278 unsigned size = ntohs(ip->tot_len);
280 if(ip->protocol==IPPROTO_TCP)
282 const tcphdr *tcp = reinterpret_cast<const tcphdr *>(ip+1);
283 port = min(ntohs(tcp->source), ntohs(tcp->dest));
285 else if(ip->protocol==IPPROTO_UDP)
287 const udphdr *udp = reinterpret_cast<const udphdr *>(ip+1);
288 port = min(ntohs(udp->source), ntohs(udp->dest));
290 Host &shost = self->get_host(ntohl(ip->saddr));
292 if((ntohl(ip->daddr)&0xFF)!=0xFF)
293 dhost = &self->get_host(ntohl(ip->daddr));
295 float throttle = shost.send_packet();
298 self->packets.push_back(new Packet(shost, dhost, self->get_port(port).get_color(), size));
299 self->packets.back()->tick(-throttle*Msp::Time::sec);
302 shost.add_activity(size);
304 dhost->add_activity(size);
308 void NetVis::sighandler(int)
313 Application::RegApp<NetVis> NetVis::reg;