359 lines
10 KiB
C++
359 lines
10 KiB
C++
#include <algorithm>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include "bitcoin.h"
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#include "db.h"
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#define NTHREADS 24
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using namespace std;
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class CDnsSeedOpts {
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public:
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int nThreads;
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int nPort;
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int nDnsThreads;
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const char *mbox;
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const char *ns;
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const char *host;
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CDnsSeedOpts() : nThreads(24), nDnsThreads(24), nPort(53), mbox(NULL), ns(NULL), host(NULL) {}
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void ParseCommandLine(int argc, char **argv) {
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static const char *help = "Bitcoin-seeder\n"
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"Usage: %s -h <host> -n <ns> [-m <mbox>] [-t <threads>] [-p <port>]\n"
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"\n"
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"Options:\n"
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"-h <host> Hostname of the DNS seed\n"
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"-n <ns> Hostname of the nameserver\n"
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"-m <mbox> E-Mail address reported in SOA records\n"
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"-t <threads> Number of crawlers to run in parallel (default 24)\n"
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"-d <threads> Number of DNS server threads (default 24)\n"
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"-p <port> UDP port to listen on (default 53)\n"
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"-?, --help Show this text\n"
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"\n";
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bool showHelp = false;
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while(1) {
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static struct option long_options[] = {
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{"host", required_argument, 0, 'h'},
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{"ns", required_argument, 0, 'n'},
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{"mbox", required_argument, 0, 'm'},
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{"threads", required_argument, 0, 't'},
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{"dnsthreads", required_argument, 0, 'd'},
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{"port", required_argument, 0, 'p'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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int option_index = 0;
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int c = getopt_long(argc, argv, "h:n:m:t:p:d:", long_options, &option_index);
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if (c == -1) break;
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switch (c) {
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case 'h': {
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host = optarg;
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break;
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}
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case 'm': {
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mbox = optarg;
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break;
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}
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case 'n': {
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ns = optarg;
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break;
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}
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case 't': {
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int n = strtol(optarg, NULL, 10);
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if (n > 0 && n < 1000) nThreads = n;
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break;
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}
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case 'd': {
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int n = strtol(optarg, NULL, 10);
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if (n > 0 && n < 1000) nDnsThreads = n;
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break;
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}
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case 'p': {
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int p = strtol(optarg, NULL, 10);
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if (p > 0 && p < 65536) nPort = p;
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break;
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}
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case '?': {
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showHelp = true;
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break;
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}
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}
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}
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if (host != NULL && ns == NULL) showHelp = true;
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if (showHelp) fprintf(stderr, help, argv[0]);
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}
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};
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extern "C" {
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#include "dns.h"
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}
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CAddrDb db;
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extern "C" void* ThreadCrawler(void* data) {
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do {
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CService ip;
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int wait = 5;
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if (!db.Get(ip, wait)) {
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wait *= 1000;
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wait += rand() % (500 * NTHREADS);
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Sleep(wait);
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continue;
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}
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int ban = 0;
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vector<CAddress> addr;
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int clientV = 0;
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std::string clientSV;
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bool ret = TestNode(ip,ban,clientV,clientSV,addr);
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db.Add(addr);
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if (ret) {
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db.Good(ip, clientV, clientSV);
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} else {
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db.Bad(ip, ban);
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}
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} while(1);
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}
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extern "C" int GetIPList(void *thread, addr_t *addr, int max, int ipv4, int ipv6);
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class CDnsThread {
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public:
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dns_opt_t dns_opt;
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vector<addr_t> cache;
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int nIPv4, nIPv6;
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time_t cacheTime;
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unsigned int cacheHits;
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uint64_t dbQueries;
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void cacheHit(bool force = false) {
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static bool nets[NET_MAX] = {};
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if (!nets[NET_IPV4]) {
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nets[NET_IPV4] = true;
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nets[NET_IPV6] = true;
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}
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time_t now = time(NULL);
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cacheHits++;
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if (force || cacheHits > (cache.size()*cache.size()/400) || (cacheHits*cacheHits > cache.size() / 20 && (now - cacheTime > 5))) {
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set<CNetAddr> ips;
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db.GetIPs(ips, 1000, nets);
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dbQueries++;
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cache.clear();
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nIPv4 = 0;
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nIPv6 = 0;
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cache.reserve(ips.size());
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for (set<CNetAddr>::iterator it = ips.begin(); it != ips.end(); it++) {
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struct in_addr addr;
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struct in6_addr addr6;
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if ((*it).GetInAddr(&addr)) {
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addr_t a;
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a.v = 4;
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memcpy(&a.data.v4, &addr, 4);
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cache.push_back(a);
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nIPv4++;
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#ifdef USE_IPV6
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} else if ((*it).GetIn6Addr(&addr6)) {
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addr_t a;
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a.v = 6;
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memcpy(&a.data.v6, &addr6, 16);
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cache.push_back(a);
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nIPv6++;
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#endif
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}
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}
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cacheHits = 0;
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cacheTime = now;
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}
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}
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CDnsThread(CDnsSeedOpts* opts) {
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dns_opt.host = opts->host;
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dns_opt.ns = opts->ns;
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dns_opt.mbox = opts->mbox;
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dns_opt.datattl = 60;
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dns_opt.nsttl = 40000;
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dns_opt.cb = GetIPList;
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dns_opt.port = opts->nPort;
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dns_opt.nRequests = 0;
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cache.clear();
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cache.reserve(1000);
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cacheTime = 0;
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cacheHits = 0;
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dbQueries = 0;
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nIPv4 = 0;
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nIPv6 = 0;
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cacheHit(true);
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}
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void run() {
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dnsserver(&dns_opt);
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}
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};
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extern "C" int GetIPList(void *data, addr_t* addr, int max, int ipv4, int ipv6) {
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CDnsThread *thread = (CDnsThread*)data;
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thread->cacheHit();
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unsigned int size = (ipv4 ? thread->nIPv4 : 0) + (ipv6 ? thread->nIPv6 : 0);
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if (max > size)
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max = size;
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int i=0;
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while (i<max) {
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int j = i + (rand() % (size - i));
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do {
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bool ok = (ipv4 && thread->cache[j].v == 4) ||
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(ipv6 && thread->cache[j].v == 6);
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if (ok) break;
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j = i + ((j - i + 1) % (size - i));
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} while(1);
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addr[i] = thread->cache[j];
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thread->cache[j] = thread->cache[i];
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thread->cache[i] = addr[i];
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}
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return max;
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}
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vector<CDnsThread*> dnsThread;
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extern "C" void* ThreadDNS(void* arg) {
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CDnsThread *thread = (CDnsThread*)arg;
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thread->run();
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}
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int StatCompare(const CAddrReport& a, const CAddrReport& b) {
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if (a.uptime[4] == b.uptime[4]) {
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if (a.uptime[3] == b.uptime[3]) {
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return a.clientVersion > b.clientVersion;
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} else {
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return a.uptime[3] > b.uptime[3];
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}
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} else {
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return a.uptime[4] > b.uptime[4];
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}
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}
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extern "C" void* ThreadDumper(void*) {
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do {
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Sleep(100000);
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{
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FILE *f = fopen("dnsseed.dat","w+");
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if (f) {
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CAutoFile cf(f);
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cf << db;
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}
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FILE *d = fopen("dnsseed.dump", "w");
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vector<CAddrReport> v = db.GetAll();
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sort(v.begin(), v.end(), StatCompare);
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fprintf(d, "# address \t%%(2h)\t%%(8h)\t%%(1d)\t%%(7d)\t%%(30d)\tversion\n");
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double stat[5]={0,0,0,0,0};
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for (vector<CAddrReport>::const_iterator it = v.begin(); it < v.end(); it++) {
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CAddrReport rep = *it;
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fprintf(d, "%s\t%.2f%%\t%.2f%%\t%.2f%%\t%.2f%%\t%.2f%%\t%i \"%s\"\n", rep.ip.ToString().c_str(), 100.0*rep.uptime[0], 100.0*rep.uptime[1], 100.0*rep.uptime[2], 100.0*rep.uptime[3], 100.0*rep.uptime[4], rep.clientVersion, rep.clientSubVersion.c_str());
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stat[0] += rep.uptime[0];
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stat[1] += rep.uptime[1];
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stat[2] += rep.uptime[2];
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stat[3] += rep.uptime[3];
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stat[4] += rep.uptime[4];
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}
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fclose(d);
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FILE *ff = fopen("dnsstats.log", "a");
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fprintf(ff, "%llu %g %g %g %g %g\n", (unsigned long long)(time(NULL)), stat[0], stat[1], stat[2], stat[3], stat[4]);
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fclose(ff);
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}
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} while(1);
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}
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extern "C" void* ThreadStats(void*) {
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do {
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char c[256];
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time_t tim = time(NULL);
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struct tm *tmp = localtime(&tim);
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strftime(c, 256, "[%y-%m-%d %H:%M:%S]", tmp);
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CAddrDbStats stats;
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db.GetStats(stats);
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printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
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uint64_t requests = 0;
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uint64_t queries = 0;
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for (unsigned int i=0; i<dnsThread.size(); i++) {
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requests += dnsThread[i]->dns_opt.nRequests;
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queries += dnsThread[i]->dbQueries;
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}
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printf("%s %i/%i available (%i tried in %is, %i new, %i active), %i banned; %llu DNS requests, %llu db queries", c, stats.nGood, stats.nAvail, stats.nTracked, stats.nAge, stats.nNew, stats.nAvail - stats.nTracked - stats.nNew, stats.nBanned, (unsigned long long)requests, (unsigned long long)queries);
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Sleep(1000);
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} while(1);
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}
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static const string seeds[] = {"dnsseed.bluematt.me", "bitseed.xf2.org", "dnsseed.bitcoin.dashjr.org", "seed.bitcoin.sipa.be"};
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extern "C" void* ThreadSeeder(void*) {
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do {
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for (int i=0; i<sizeof(seeds)/sizeof(seeds[0]); i++) {
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vector<CNetAddr> ips;
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LookupHost(seeds[i].c_str(), ips);
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for (vector<CNetAddr>::iterator it = ips.begin(); it != ips.end(); it++) {
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db.Add(CService(*it, 8333), true);
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}
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}
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Sleep(1800000);
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} while(1);
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}
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int main(int argc, char **argv) {
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setbuf(stdout, NULL);
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CDnsSeedOpts opts;
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opts.ParseCommandLine(argc, argv);
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bool fDNS = true;
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if (!opts.ns) {
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printf("No nameserver set. Not starting DNS server.\n");
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fDNS = false;
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}
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if (fDNS && !opts.host) {
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fprintf(stderr, "No hostname set. Please use -h.\n");
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exit(1);
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}
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FILE *f = fopen("dnsseed.dat","r");
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if (f) {
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printf("Loading dnsseed.dat...");
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CAutoFile cf(f);
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cf >> db;
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// db.banned.clear();
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printf("done\n");
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}
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pthread_t threadDns, threadSeed, threadDump, threadStats;
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printf("Starting seeder...");
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pthread_create(&threadSeed, NULL, ThreadSeeder, NULL);
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printf("done\n");
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printf("Starting %i crawler threads...", opts.nThreads);
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for (int i=0; i<opts.nThreads; i++) {
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pthread_t thread;
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pthread_create(&thread, NULL, ThreadCrawler, NULL);
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}
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printf("done\n");
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pthread_create(&threadDump, NULL, ThreadDumper, NULL);
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if (fDNS) {
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printf("Starting %i DNS threads for %s on %s (port %i)...", opts.nDnsThreads, opts.host, opts.ns, opts.nPort);
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dnsThread.clear();
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for (int i=0; i<opts.nDnsThreads; i++) {
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dnsThread.push_back(new CDnsThread(&opts));
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pthread_create(&threadDns, NULL, ThreadDNS, dnsThread[i]);
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printf(".");
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Sleep(20);
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}
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printf("done\n");
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}
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pthread_create(&threadStats, NULL, ThreadStats, NULL);
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void* res;
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pthread_join(threadDump, &res);
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return 0;
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}
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