3 This file is part of NetVis
4 Copyright @ 2008 Mikko Rasa, Mikkosoft Productions
5 Distributed unter the GPL
12 #include <netinet/ether.h>
13 #include <netinet/ip.h>
14 #include <netinet/tcp.h>
15 #include <netinet/udp.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>
39 NetVis::NetVis(int argc, char **argv):
45 max_visible_hosts(30),
49 throw UsageError("No interface given");
53 pcap = pcap_open_live(iface.c_str(), 128, true, 0, err);
57 if(pcap_setnonblock(pcap, true, err)==-1)
60 pcap_lookupnet(iface.c_str(), &localnet, &localnet_mask, err);
61 localnet = ntohl(localnet);
62 localnet_mask = ntohl(localnet_mask);
64 resolver = new Resolver;
66 wnd = new Graphics::SimpleGLWindow(1024, 768);
67 wnd->set_title("NetVis");
68 wnd->signal_close.connect(sigc::bind(sigc::mem_fun(this, &NetVis::exit), 0));
71 GL::enable(GL::BLEND);
72 GL::blend_func(GL::SRC_ALPHA, GL::ONE_MINUS_SRC_ALPHA);
75 DataFile::load(*font, "dejavu-10.font");
77 history = new History(*this, 301, 100);
91 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
93 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end(); ++i)
95 for(map<unsigned, Port *>::iterator i=ports.begin(); i!=ports.end(); ++i)
97 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
103 Msp::Time::TimeStamp t = Msp::Time::now();
104 Msp::Time::TimeDelta dt;
109 if(tick_t>fps_t+Msp::Time::sec)
111 fps = frames/((tick_t-fps_t)/Msp::Time::sec);
116 wnd->get_display().tick();
118 while(pcap_dispatch(pcap, -1, &capture_handler, reinterpret_cast<unsigned char *>(this))>0) ;
121 history->tick(tick_t);
124 float min_activity = numeric_limits<float>::max();
125 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
128 min_activity = min(min_activity, i->second->get_activity());
130 float del_limit = pow(10, 6-0.1*static_cast<int>(max_hosts-hosts.size()-disabled_hosts.size()));
131 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end();)
135 if(i->second->get_activity()>min_activity)
137 i->second->set_active(true);
139 for(unsigned j=0; j<100; ++j)
140 i->second->tick(100*Time::msec);
141 disabled_hosts.erase(i++);
143 else if(i->second->get_activity()<del_limit)
145 resolver->cancel(i->second);
147 disabled_hosts.erase(i++);
153 if(hosts.size()>max_visible_hosts)
155 list<float> activity;
156 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
157 activity.push_back(i->second->get_activity());
160 list<float>::iterator j = activity.begin();
161 advance(j, activity.size()-max_visible_hosts);
164 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end();)
166 if(i->second->get_activity()<limit)
168 i->second->set_active(false);
169 disabled_hosts.insert(*i);
177 for(map<unsigned, Port *>::iterator i=ports.begin(); i!=ports.end();)
181 if(!i->second->is_registered() && i->second->get_activity()<0.1)
190 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end();)
193 if((*i)->get_stale())
196 i = packets.erase(i);
208 void NetVis::render()
210 GL::clear(GL::COLOR_BUFFER_BIT);
212 GL::matrix_mode(GL::PROJECTION);
214 GL::ortho_centered(1024, 768);
215 GL::matrix_mode(GL::MODELVIEW);
218 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
221 GL::Immediate imm((GL::COLOR4_UBYTE, GL::VERTEX2));
222 imm.begin(GL::QUADS);
223 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
229 GL::translate(-500, 360, 0);
231 for(map<unsigned, Port *>::iterator i=ports.begin(); (i!=ports.end() && n<50); ++i)
233 float act = i->second->get_activity();
234 if((i->second->is_registered() && act>1) || act>200)
237 GL::translate(0, -12, 0);
244 GL::translate(-500, -348, 0);
245 GL::scale_uniform(10);
246 font->draw_string(format("%d hosts", hosts.size()+disabled_hosts.size()));
247 GL::translate(0, -1.2, 0);
248 font->draw_string(format("%d ports", ports.size()));
249 GL::translate(0, -1.2, 0);
250 font->draw_string(format("%.2f fps", fps));
251 GL::Texture::unbind();
255 GL::translate(170, -370, 0);
260 Host &NetVis::get_host(unsigned a)
262 map<unsigned, Host *>::iterator i = hosts.find(a);
266 i = disabled_hosts.find(a);
267 if(i!=disabled_hosts.end())
270 Host *host = new Host(*this, a);
271 if((a&localnet_mask)==localnet)
272 host->set_local(true);
273 resolver->push(host);
274 host->set_position(Vector2(rand()*400.0/RAND_MAX-200.0, rand()*400.0/RAND_MAX-200.0));
275 for(unsigned j=0; j<100; ++j)
276 host->tick(100*Time::msec);
281 Port &NetVis::get_port(unsigned number)
283 map<unsigned, Port *>::iterator i = ports.find(number);
286 Port *port = new Port(*this, number);
287 ports[number] = port;
291 void NetVis::capture_handler(unsigned char *user, const pcap_pkthdr *, const unsigned char *data)
293 NetVis *self = reinterpret_cast<NetVis *>(user);
295 const ethhdr *eth = reinterpret_cast<const ethhdr *>(data);
296 if(ntohs(eth->h_proto)==ETH_P_IP)
298 const iphdr *ip = reinterpret_cast<const iphdr *>(eth+1);
300 unsigned size = ntohs(ip->tot_len);
304 if(ip->protocol==IPPROTO_TCP)
306 const tcphdr *tcp = reinterpret_cast<const tcphdr *>(ip+1);
307 sport = &self->get_port(ntohs(tcp->source));
308 dport = &self->get_port(ntohs(tcp->dest));
310 else if(ip->protocol==IPPROTO_UDP)
312 const udphdr *udp = reinterpret_cast<const udphdr *>(ip+1);
313 sport = &self->get_port(ntohs(udp->source));
314 dport = &self->get_port(ntohs(udp->dest));
320 if(sport->is_registered()!=dport->is_registered())
322 if(sport->is_registered())
327 else if(sport->get_number()<dport->get_number())
333 port = &self->get_port(0);
335 Host &shost = self->get_host(ntohl(ip->saddr));
337 if((ntohl(ip->daddr)&0xFF)!=0xFF)
338 dhost = &self->get_host(ntohl(ip->daddr));
340 float throttle = shost.send_packet();
343 self->packets.push_back(new Packet(shost, dhost, port->get_color(), size));
344 self->packets.back()->tick(-throttle*Msp::Time::sec);
347 shost.add_activity(size);
349 dhost->add_activity(size);
352 sport->add_activity(size);
354 dport->add_activity(size);
356 if((ntohl(ip->saddr)&self->localnet_mask)==self->localnet)
357 self->history->activity(0, size);
358 else if((ntohl(ip->daddr)&self->localnet_mask)==self->localnet)
359 self->history->activity(size, 0);
363 void NetVis::sighandler(int)
368 Application::RegApp<NetVis> NetVis::reg;