proxyscan/proxyscanhandlers.c

   1 #include "proxyscan.h"
   2 #include "../irc/irc.h"
   3 #include "../lib/irc_string.h"
   4
   5 void proxyscan_newnick(int hooknum, void *arg) {
   6   nick *np=(nick *)arg;
   7   cachehost *chp;
   8   foundproxy *fpp, *nfpp;
   9   int i;
  10
  11   /* Skip 127.* and 0.* hosts */
  12   if (irc_in_addr_is_loopback(&np->p_ipaddr) || !irc_in_addr_is_ipv4(&np->p_ipaddr))
  13     return;
  14
  15   unsigned int ip = irc_in_addr_v4_to_int(&np->p_ipaddr);
  16
  17   /*
  18    * Logic for connecting hosts:
  19    *
  20    * If they're in the cache and clean, return.
  21    * If they're in the cache, dirty, and last scanned < 30
  22    *   mins ago, return (they will probably go away in a minute)
  23    * If they're in the cache and dirty:
  24    *  - gline them
  25    *  - trigger the "check" scans on the known proxies
  26    *  - trigger normal scans as for the case below..
  27    *
  28    * If they're not in the cache, we queue up their scans
  29    */
  30
  31   if ((chp=findcachehost(ip))) {
  32     if (!chp->proxies)
  33       return;
  34
  35     if (time(NULL) < (chp->lastscan + 1800))
  36       return;
  37
  38     /* Queue up all the normal scans - on the normal queue */
  39     for (i=0;i<numscans;i++) {
  40       /* If this port is open DON'T queue the scan - we'll start it later in the CHECK class */
  41       for (fpp=chp->proxies;fpp;fpp=fpp->next) {
  42         if (fpp->type == thescans[i].type && fpp->port == thescans[i].port)
  43           break;
  44
  45       if (!fpp)
  46         queuescan(ip, thescans[i].type, thescans[i].port, SCLASS_NORMAL, 0);
  47       }
  48     }
  49
  50     /* We want these scans to start around now, so we put them at the front of the priority queue */
  51     for (fpp=chp->proxies;fpp;fpp=nfpp) {
  52       nfpp=fpp->next;
  53       queuescan(ip, fpp->type, fpp->port, SCLASS_CHECK, time(NULL));
  54       freefoundproxy(fpp);
  55     }
  56
  57     /* set a SHORT gline - if they really have an open proxy the gline will be re-set, with a new ID */
  58     irc_send("%s GL * +*@%s 600 :Open Proxy, see http://www.quakenet.org/openproxies.html - ID: %d",
  59              mynumeric->content,IPtostr(np->p_ipaddr),chp->glineid);
  60
  61     chp->lastscan=time(NULL);
  62     chp->proxies=NULL;
  63     chp->glineid=0;
  64   } else {
  65     chp=addcleanhost(ip, time(NULL));
  66
  67     /* Queue up all the normal scans - on the normal queue */
  68     for (i=0;i<numscans;i++)
  69       queuescan(ip, thescans[i].type, thescans[i].port, SCLASS_NORMAL, 0);
  70   }
  71 }
  72