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-rw-r--r--src/dnsqueue.cpp154
-rw-r--r--src/inspircd.cpp1
2 files changed, 63 insertions, 92 deletions
diff --git a/src/dnsqueue.cpp b/src/dnsqueue.cpp
index 6cef6e187..2d123a419 100644
--- a/src/dnsqueue.cpp
+++ b/src/dnsqueue.cpp
@@ -14,8 +14,6 @@
* ---------------------------------------------------
*/
-/* Now with added unF! ;) */
-
using namespace std;
#include "inspircd_config.h"
@@ -39,15 +37,7 @@ using namespace std;
#include <vector>
#include <deque>
#include "users.h"
-#include "ctables.h"
#include "globals.h"
-#include "modules.h"
-#include "dynamic.h"
-#include "wildcard.h"
-#include "message.h"
-#include "mode.h"
-#include "commands.h"
-#include "xline.h"
#include "inspstring.h"
#include "dnsqueue.h"
#include <time.h>
@@ -63,32 +53,13 @@ using namespace std;
#include "socketengine.h"
extern SocketEngine* SE;
-
-extern int MaxWhoResults;
-
-extern std::vector<Module*> modules;
-extern std::vector<std::string> module_names;
-extern std::vector<ircd_module*> factory;
-
-extern int MODCOUNT;
-
typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
-typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
-typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, irc::InAddr_HashComp> address_cache;
-typedef nspace::hash_map<std::string, WhoWasUser*, nspace::hash<string>, irc::StrHashComp> whowas_hash;
-typedef std::deque<command_t> command_table;
-
extern user_hash clientlist;
-extern chan_hash chanlist;
-extern whowas_hash whowas;
-extern command_table cmdlist;
-
-extern ClassVector Classes;
-
extern char DNSServer[MAXBUF];
-long max_fd_alloc = 0;
-extern time_t TIME;
+class Lookup;
+
+Lookup* dnslist[65535];
//enum LookupState { reverse, forward };
@@ -107,7 +78,6 @@ public:
void Reset()
{
strcpy(u,"");
- log(DEBUG,"Reset class Lookup");
}
~Lookup()
@@ -120,17 +90,18 @@ public:
userrec* usr = Find(nick);
if (usr)
{
- log(DEBUG,"New Lookup class for %s with DNSServer set to '%s'",nick.c_str(),DNSServer);
resolver1.SetNS(std::string(DNSServer));
if (!resolver1.ReverseLookup(std::string(usr->host)))
{
- log(DEBUG,"ReverseLookup didnt return true, we're outta here");
return false;
}
strlcpy(u,nick.c_str(),NICKMAX);
+
+ /* ASSOCIATE WITH DNS LOOKUP LIST */
+ dnslist[resolver1.GetFD()] = this;
+
return true;
}
- log(DEBUG,"We couldnt find that user");
return false;
}
@@ -138,23 +109,19 @@ public:
{
if (hostname != "")
{
- log(DEBUG,"Doing forward lookup here with host %s",hostname.c_str());
// doing forward lookup
userrec* usr = NULL;
if (resolver2.HasResult(fdcheck))
{
- log(DEBUG,"resolver2 has result");
- if (resolver2.GetFD() != 0)
+ if (resolver2.GetFD() != -1)
{
+ dnslist[resolver2.GetFD()] = NULL;
std::string ip = resolver2.GetResultIP();
- log(DEBUG,"FORWARD RESULT! %s",ip.c_str());
-
usr = Find(u);
if (usr)
{
if (usr->registered > 3)
{
- log(DEBUG,"Point 1: Returning true as usr->dns_done is true");
usr->dns_done = true;
return true;
}
@@ -164,11 +131,6 @@ public:
{
strlcpy(usr->host,hostname.c_str(),MAXBUF);
strlcpy(usr->dhost,hostname.c_str(),MAXBUF);
- log(DEBUG,"Forward and reverse match, assigning hostname");
- }
- else
- {
- log(DEBUG,"AWOOGA! Forward lookup doesn't match reverse: R='%s',F='%s',IP='%s'",hostname.c_str(),ip.c_str(),usr->ip);
}
usr->dns_done = true;
return true;
@@ -180,13 +142,11 @@ public:
usr = Find(u);
if (usr)
{
- log(DEBUG,"Point 2: Returning true");
usr->dns_done = true;
}
return true;
}
}
- log(DEBUG,"Returning false in forward");
return false;
}
else
@@ -198,27 +158,27 @@ public:
usr = Find(u);
if ((usr) && (usr->dns_done))
return true;
- if (resolver1.GetFD() != 0)
+ if (resolver1.GetFD() != -1)
{
+ dnslist[resolver1.GetFD()] = NULL;
hostname = resolver1.GetResult();
if (usr)
{
if ((usr->registered > 3) || (hostname == ""))
{
- log(DEBUG,"Hostname is blank and user->registered > 3, returning true and setting done");
usr->dns_done = true;
return true;
}
}
if (hostname != "")
{
- log(DEBUG,"Starting forwardlookup now for host '%s'...",hostname.c_str());
resolver2.ForwardLookup(hostname);
+ if (resolver2.GetFD())
+ dnslist[resolver2.GetFD()] = this;
}
}
}
}
- log(DEBUG,"Returning false");
return false;
}
@@ -233,59 +193,71 @@ public:
}
};
-Lookup dnsq[255];
-
bool lookup_dns(std::string nick)
{
+ /* First attempt to find the nickname */
userrec* u = Find(nick);
if (u)
{
- // place a new user into the queue...
- log(DEBUG,"Queueing DNS lookup for %s",u->nick);
- WriteServ(u->fd,"NOTICE Auth :Looking up your hostname...");
- Lookup L;
- if (L.DoLookup(nick))
- {
- for (int j = 0; j < 255; j++)
- {
- if (!dnsq[j].GetFD())
- {
- dnsq[j] = L;
- return true;
- }
- }
- // calculate the maximum value, this saves cpu time later
- for (int p = 0; p < 255; p++)
- if (dnsq[p].GetFD())
- max_fd_alloc = p;
- }
- else
- {
- return false;
- }
+ /* If the user exists, create a new
+ * lookup object, and associate it
+ * with the user. The lookup object
+ * will maintain the reference table
+ * which we use for quickly finding
+ * dns results. Please note that we
+ * do not associate a lookup with a
+ * userrec* pointer and we use the
+ * nickname instead because, by the
+ * time the DNS lookup has completed,
+ * the nickname could have quit and
+ * if we then try and access the
+ * pointer we get a nice segfault.
+ */
+ Lookup* L = new Lookup();
+ L->DoLookup(nick);
+ return true;
}
return false;
}
void dns_poll(int fdcheck)
{
- // do we have items in the queue?
- for (int j = 0; j <= max_fd_alloc; j++)
+ /* Check the given file descriptor is in valid range */
+ if ((fdcheck < 0) || (fdcheck > 65535))
+ return;
+
+ /* Try and find the file descriptor in our list of
+ * active DNS lookups
+ */
+ Lookup *x = dnslist[fdcheck];
+ if (x)
{
- // are any ready, or stale?
- if (dnsq[j].GetFD())
+ /* If it exists check if its a valid fd still */
+ if (x->GetFD() != -1)
{
- if (dnsq[j].Done(fdcheck))
+ /* Check if its done, if it is delete it */
+ if (x->Done(fdcheck))
{
- SE->DelFd(dnsq[j].GetFD());
- dnsq[j].Reset();
+ /* We don't need to delete the file descriptor
+ * from the socket engine, as dns.cpp tracks it
+ * for us if we are in single-threaded country.
+ */
+ delete x;
}
}
+ else
+ {
+ /* its fd is dodgy, the dns code probably
+ * bashed it due to error. Free the class.
+ */
+ delete x;
+ }
+ /* If we got down here, the dns lookup was valid, BUT,
+ * its still in progress. Be patient, and wait for
+ * more socketengine events to complete the lookups.
+ */
+ return;
}
- // looks like someones freed an item, recalculate end of list.
- if ((!dnsq[max_fd_alloc].GetFD()) && (max_fd_alloc != 0))
- for (int p = 0; p < 255; p++)
- if (dnsq[p].GetFD())
- max_fd_alloc = p;
-
+ log(DEBUG,"DNS: Received an event for an invalid descriptor!");
}
+
diff --git a/src/inspircd.cpp b/src/inspircd.cpp
index a92a8ffdc..4d68da04f 100644
--- a/src/inspircd.cpp
+++ b/src/inspircd.cpp
@@ -2475,7 +2475,6 @@ int InspIRCd(char** argv, int argc)
* within it, making them 'fire and forget'
* and independent of the mainloop.
*/
- log(DEBUG,"Got a ready socket of type X_ESTAB_DNS");
#ifndef THREADED_DNS
dns_poll(activefds[activefd]);
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 10:09:56 +0000