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>
37 NetVis::NetVis(int argc, char **argv):
43 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));
69 wnd->signal_key_press.connect(sigc::mem_fun(this, &NetVis::key_press));
72 GL::enable(GL::BLEND);
73 GL::blend_func(GL::SRC_ALPHA, GL::ONE_MINUS_SRC_ALPHA);
76 DataFile::load(*font, "dejavu-10.font");
89 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
91 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end(); ++i)
93 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
99 Msp::Time::TimeStamp t = Msp::Time::now();
100 Msp::Time::TimeDelta dt;
105 if(tick_t>fps_t+Msp::Time::sec)
107 fps = frames/((tick_t-fps_t)/Msp::Time::sec);
112 wnd->get_display().tick();
115 Debug::ProfilingScope s(profiler, "capture");
116 while(pcap_dispatch(pcap, -1, &capture_handler, reinterpret_cast<unsigned char *>(this))>0) ;
120 Debug::ProfilingScope s(profiler, "tick");
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*(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 disabled_hosts.erase(i++);
141 else if(i->second->get_activity()<del_limit)
144 disabled_hosts.erase(i++);
150 if(hosts.size()>max_visible_hosts)
152 list<float> activity;
153 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
154 activity.push_back(i->second->get_activity());
157 list<float>::iterator j = activity.begin();
158 advance(j, activity.size()-max_visible_hosts);
161 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end();)
163 if(i->second->get_activity()<limit)
165 i->second->set_active(false);
166 disabled_hosts.insert(*i);
174 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end();)
177 if((*i)->get_stale())
180 i = packets.erase(i);
188 Debug::ProfilingScope s(profiler, "render");
189 GL::clear(GL::COLOR_BUFFER_BIT);
191 GL::matrix_mode(GL::PROJECTION);
193 GL::ortho_centered(1024, 768);
194 GL::matrix_mode(GL::MODELVIEW);
197 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
201 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
202 i->second->render_label();
203 GL::Texture::unbind();
205 GL::Immediate imm((GL::COLOR4_UBYTE, GL::VERTEX2));
206 imm.begin(GL::QUADS);
207 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
212 GL::translate(-500, 360, 0);
214 for(map<unsigned, GL::Color>::iterator i=port_colors.begin(); (i!=port_colors.end() && n<20); ++i, ++n)
216 GL::Color &color = i->second;
218 imm.begin(GL::QUADS);
219 imm.color(color.r, color.g, color.b, color.a);
220 for(unsigned x=0; x<=4; x+=2)
224 imm.vertex(x+10, 10);
229 GL::translate(0, -12, 0);
237 GL::translate(-484, 361, 0);
238 GL::scale_uniform(10);
240 for(map<unsigned, GL::Color>::iterator i=port_colors.begin(); (i!=port_colors.end() && n<20); ++i, ++n)
242 GL::Immediate imm2((GL::COLOR4_UBYTE, GL::TEXCOORD2, GL::VERTEX2));
243 imm.color(1.0f, 1.0f, 1.0f);
244 font->draw_string(format("%d", i->first), imm2);
246 GL::translate(0, -1.2, 0);
249 GL::Texture::unbind();
254 GL::translate(-500, -360, 0);
255 GL::scale_uniform(10);
256 font->draw_string(format("%d hosts", hosts.size()+disabled_hosts.size()));
257 GL::translate(0, -1.2, 0);
258 font->draw_string(format("%.2f fps", fps));
260 GL::Texture::unbind();
268 Host &NetVis::get_host(unsigned a)
270 map<unsigned, Host *>::iterator i = hosts.find(a);
274 i = disabled_hosts.find(a);
275 if(i!=disabled_hosts.end())
278 Host *host = new Host(*this, a);
279 if((a&localnet_mask)==localnet)
280 host->set_local(true);
281 resolver->push(host);
282 host->set_position(Vector2(rand()*400.0/RAND_MAX-200.0, rand()*400.0/RAND_MAX-200.0));
287 GL::Color &NetVis::get_port_color(unsigned port)
289 map<unsigned, GL::Color>::iterator i = port_colors.find(port);
290 if(i!=port_colors.end())
296 color.r = rand()*1.0/RAND_MAX;
297 color.g = rand()*1.0/RAND_MAX;
298 color.b = rand()*1.0/RAND_MAX;
299 if(color.r>0.5 || color.g>0.5 || color.b>0.7)
303 return port_colors[port] = color;
306 void NetVis::key_press(unsigned key, unsigned, wchar_t)
309 draw_labels = !draw_labels;
313 GL::set(GL_BLEND, blend);
317 void NetVis::capture_handler(unsigned char *user, const pcap_pkthdr *, const unsigned char *data)
319 NetVis *self = reinterpret_cast<NetVis *>(user);
321 const ethhdr *eth = reinterpret_cast<const ethhdr *>(data);
322 if(ntohs(eth->h_proto)==ETH_P_IP)
324 const iphdr *ip = reinterpret_cast<const iphdr *>(eth+1);
326 unsigned size = ntohs(ip->tot_len);
328 if(ip->protocol==IPPROTO_TCP)
330 const tcphdr *tcp = reinterpret_cast<const tcphdr *>(ip+1);
331 port = min(ntohs(tcp->source), ntohs(tcp->dest));
333 else if(ip->protocol==IPPROTO_UDP)
335 const udphdr *udp = reinterpret_cast<const udphdr *>(ip+1);
336 port = min(ntohs(udp->source), ntohs(udp->dest));
338 Host &shost = self->get_host(ntohl(ip->saddr));
340 if((ntohl(ip->daddr)&0xFF)!=0xFF)
341 dhost = &self->get_host(ntohl(ip->daddr));
343 float throttle = shost.send_packet();
346 self->packets.push_back(new Packet(shost, dhost, self->get_port_color(port), size));
347 self->packets.back()->tick(-throttle*Msp::Time::sec);
350 shost.add_activity(size);
352 dhost->add_activity(size);
356 void NetVis::sighandler(int)
361 Application::RegApp<NetVis> NetVis::reg;