3 This file is part of NetVis
4 Copyright @ 2008 Mikko Rasa, Mikkosoft Productions
5 Distributed unter the GPL
13 #include <netinet/ip.h>
14 #include <netinet/tcp.h>
15 #include <netinet/udp.h>
16 #include <linux/if_ether.h>
17 #include <msp/core/except.h>
18 #include <msp/debug/profilingscope.h>
19 #include <msp/gl/immediate.h>
20 #include <msp/gl/matrix.h>
21 #include <msp/gl/misc.h>
22 #include <msp/gl/projection.h>
23 #include <msp/gl/texture2d.h>
24 #include <msp/gl/transform.h>
25 #include <msp/strings/formatter.h>
26 #include <msp/time/units.h>
27 #include <msp/time/utils.h>
36 NetVis::NetVis(int argc, char **argv):
38 max_visible_hosts(30),
44 throw UsageError("No interface given");
51 pcap = pcap_open_live(iface.c_str(), 128, true, 0, err);
55 if(pcap_setnonblock(pcap, true, err)==-1)
58 pcap_lookupnet(iface.c_str(), &localnet, &localnet_mask, err);
59 localnet = ntohl(localnet);
60 localnet_mask = ntohl(localnet_mask);
62 dpy = new Graphics::Display;
63 wnd = new Graphics::Window(*dpy, 1024, 768);
64 glc = new Graphics::GLContext(*wnd);
65 wnd->set_title("NetVis");
66 wnd->signal_close.connect(sigc::bind(sigc::mem_fun(this, &NetVis::exit), 0));
67 wnd->signal_key_press.connect(sigc::mem_fun(this, &NetVis::key_press));
71 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
74 DataFile::load(*font, "dejavu-10.font");
75 font_tex = new GL::Texture2D;
76 DataFile::load(*font_tex, "dejavu-10.tex");
77 font->set_texture(*font_tex);
81 resolver = new Resolver;
83 //set_loop_mode(TICK_BUSY);
95 cout<<hosts.size()+disabled_hosts.size()<<" different hosts seen\n";
96 cout<<"capture: "<<profiler.scope("capture").total_time<<'\n';
97 cout<<"tick: "<<profiler.scope("tick").total_time<<'\n';
98 cout<<"render: "<<profiler.scope("render").total_time<<'\n';
101 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
103 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end(); ++i)
105 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
113 Msp::Time::TimeStamp t = Msp::Time::now();
114 Msp::Time::TimeDelta dt;
119 if(tick_t>fps_t+Msp::Time::sec)
121 fps = frames/((tick_t-fps_t)/Msp::Time::sec);
129 Debug::ProfilingScope s(profiler, "capture");
130 while(pcap_dispatch(pcap, -1, &capture_handler, reinterpret_cast<unsigned char *>(this))>0) ;
134 Debug::ProfilingScope s(profiler, "tick");
138 float min_activity = numeric_limits<float>::max();
139 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
142 min_activity = min(min_activity, i->second->get_activity());
144 float del_limit = pow(10, 6-0.1*(max_hosts-hosts.size()-disabled_hosts.size()));
145 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end();)
149 if(i->second->get_activity()>min_activity)
151 i->second->set_active(true);
153 disabled_hosts.erase(i++);
155 else if(i->second->get_activity()<del_limit)
158 disabled_hosts.erase(i++);
164 if(hosts.size()>max_visible_hosts)
166 list<float> activity;
167 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
168 activity.push_back(i->second->get_activity());
171 list<float>::iterator j = activity.begin();
172 advance(j, activity.size()-max_visible_hosts);
175 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end();)
177 if(i->second->get_activity()<limit)
179 i->second->set_active(false);
180 disabled_hosts.insert(*i);
188 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end();)
191 if((*i)->get_stale())
194 i = packets.erase(i);
202 Debug::ProfilingScope s(profiler, "render");
203 glClear(GL_COLOR_BUFFER_BIT);
205 GL::matrix_mode(GL::PROJECTION);
207 GL::ortho_centered(1024, 768);
208 GL::matrix_mode(GL::MODELVIEW);
211 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
215 glColor4f(1.0, 1.0, 1.0, 1.0);
216 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
217 i->second->render_label();
218 GL::Texture::unbind();
220 GL::Immediate imm((GL::COLOR4_UBYTE, GL::VERTEX2));
221 imm.begin(GL::QUADS);
222 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
227 GL::translate(-500, 360, 0);
229 for(map<unsigned, GL::Color>::iterator i=port_colors.begin(); (i!=port_colors.end() && n<20); ++i, ++n)
231 GL::Color &color = i->second;
233 imm.begin(GL::QUADS);
234 imm.color(color.r, color.g, color.b, color.a);
235 for(unsigned x=0; x<=4; x+=2)
239 imm.vertex(x+10, 10);
244 GL::translate(0, -12, 0);
252 GL::translate(-484, 361, 0);
253 GL::scale_uniform(10);
254 glColor4f(1.0, 1.0, 1.0, 1.0);
256 for(map<unsigned, GL::Color>::iterator i=port_colors.begin(); (i!=port_colors.end() && n<20); ++i, ++n)
258 font->draw_string(format("%d", i->first));
260 GL::translate(0, -1.2, 0);
263 GL::Texture::unbind();
268 GL::translate(-500, -360, 0);
269 GL::scale_uniform(10);
270 font->draw_string(format("%d hosts", hosts.size()+disabled_hosts.size()));
271 GL::translate(0, -1.2, 0);
272 font->draw_string(format("%.2f fps", fps));
274 GL::Texture::unbind();
282 Host &NetVis::get_host(unsigned a)
284 map<unsigned, Host *>::iterator i = hosts.find(a);
288 i = disabled_hosts.find(a);
289 if(i!=disabled_hosts.end())
292 Host *host = new Host(*this, a);
293 if((a&localnet_mask)==localnet)
294 host->set_local(true);
295 resolver->push(host);
296 host->set_position(Vector2(rand()*400.0/RAND_MAX-200.0, rand()*400.0/RAND_MAX-200.0));
301 GL::Color &NetVis::get_port_color(unsigned port)
303 map<unsigned, GL::Color>::iterator i = port_colors.find(port);
304 if(i!=port_colors.end())
310 color.r = rand()*1.0/RAND_MAX;
311 color.g = rand()*1.0/RAND_MAX;
312 color.b = rand()*1.0/RAND_MAX;
313 if(color.r>0.5 || color.g>0.5 || color.b>0.7)
317 return port_colors[port] = color;
320 void NetVis::key_press(unsigned key, unsigned, wchar_t)
323 draw_labels = !draw_labels;
327 GL::set(GL_BLEND, blend);
331 void NetVis::capture_handler(unsigned char *user, const pcap_pkthdr *, const unsigned char *data)
333 NetVis *self = reinterpret_cast<NetVis *>(user);
335 const ethhdr *eth = reinterpret_cast<const ethhdr *>(data);
336 if(ntohs(eth->h_proto)==ETH_P_IP)
338 const iphdr *ip = reinterpret_cast<const iphdr *>(eth+1);
340 unsigned size = ntohs(ip->tot_len);
342 if(ip->protocol==IPPROTO_TCP)
344 const tcphdr *tcp = reinterpret_cast<const tcphdr *>(ip+1);
345 port = min(ntohs(tcp->source), ntohs(tcp->dest));
347 else if(ip->protocol==IPPROTO_UDP)
349 const udphdr *udp = reinterpret_cast<const udphdr *>(ip+1);
350 port = min(ntohs(udp->source), ntohs(udp->dest));
352 Host &shost = self->get_host(ntohl(ip->saddr));
354 if((ntohl(ip->daddr)&0xFF)!=0xFF)
355 dhost = &self->get_host(ntohl(ip->daddr));
357 float throttle = shost.send_packet();
360 self->packets.push_back(new Packet(shost, dhost, self->get_port_color(port), size));
361 self->packets.back()->tick(-throttle*Msp::Time::sec);
364 shost.add_activity(size);
366 dhost->add_activity(size);
370 void NetVis::sighandler(int)
375 Application::RegApp<NetVis> NetVis::reg;