]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/xline.cpp
Signed octets in dns forward lookup! GAH
[user/henk/code/inspircd.git] / src / xline.cpp
index f653d80af4edeb0f1b04f68df42d7875705290d0..7a6db9a61cd857194ea68d05d0725b49d9fcfb55 100644 (file)
@@ -1,13 +1,28 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
+ *                       E-mail:
+ *                <brain@chatspike.net>
+ *               <Craig@chatspike.net>
+ *     
+ * Written by Craig Edwards, Craig McLure, and others.
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+using namespace std;
+
+#include "inspircd_config.h"
 #include "inspircd.h"
 #include "inspircd_io.h"
 #include "inspircd_util.h"
-#include "inspircd_config.h"
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/errno.h>
-#include <sys/ioctl.h>
-#include <sys/utsname.h>
-#include <cstdio>
 #include <time.h>
 #include <string>
 #ifdef GCC3
 #include <map>
 #include <sstream>
 #include <vector>
-#include <errno.h>
 #include <deque>
-#include <errno.h>
-#include <unistd.h>
-#include <sched.h>
-#include "connection.h"
 #include "users.h"
-#include "servers.h"
 #include "ctables.h"
 #include "globals.h"
 #include "modules.h"
 #include "message.h"
 #include "commands.h"
 #include "xline.h"
-
-using namespace std;
+#include "inspstring.h"
+#include "helperfuncs.h"
+#include "hashcomp.h"
 
 extern int MODCOUNT;
-extern vector<Module*> modules;
-extern vector<ircd_module*> factory;
+extern std::vector<Module*> modules;
+extern std::vector<ircd_module*> factory;
 
 extern int LogLevel;
 extern char ServerName[MAXBUF];
@@ -56,8 +66,615 @@ extern char list[MAXBUF];
 extern char PrefixQuit[MAXBUF];
 extern char DieValue[MAXBUF];
 
+extern int debugging;
+extern int WHOWAS_STALE;
+extern int WHOWAS_MAX;
+extern int DieDelay;
+extern time_t startup_time;
+extern int NetBufferSize;
+extern time_t nb_start;
+
+extern std::vector<std::string> module_names;
+
+extern int boundPortCount;
+extern int portCount;
+
+extern int ports[MAXSOCKS];
+
+extern std::stringstream config_f;
+
+extern FILE *log_file;
+
+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 file_cache MOTD;
+extern file_cache RULES;
+extern address_cache IP;
+
+extern time_t TIME;
+
 std::vector<KLine> klines;
 std::vector<GLine> glines;
 std::vector<ZLine> zlines;
 std::vector<QLine> qlines;
+std::vector<ELine> elines;
+
+// Reads the default bans from the config file.
+// only a very small number of bans are defined
+// this way these days, such as qlines against 
+// services nicks, etc.
+
+void read_xline_defaults()
+{
+       char ipmask[MAXBUF];
+       char nick[MAXBUF];
+       char host[MAXBUF];
+       char reason[MAXBUF];
+
+       for (int i = 0; i < ConfValueEnum("badip",&config_f); i++)
+       {
+               ConfValue("badip","ipmask",i,ipmask,&config_f);
+               ConfValue("badip","reason",i,reason,&config_f);
+               add_zline(0,"<Config>",reason,ipmask);
+               log(DEBUG,"Read Z line (badip tag): ipmask=%s reason=%s",ipmask,reason);
+       }
+       
+       for (int i = 0; i < ConfValueEnum("badnick",&config_f); i++)
+       {
+               ConfValue("badnick","nick",i,nick,&config_f);
+               ConfValue("badnick","reason",i,reason,&config_f);
+               add_qline(0,"<Config>",reason,nick);
+               log(DEBUG,"Read Q line (badnick tag): nick=%s reason=%s",nick,reason);
+       }
+       
+       for (int i = 0; i < ConfValueEnum("badhost",&config_f); i++)
+       {
+               ConfValue("badhost","host",i,host,&config_f);
+               ConfValue("badhost","reason",i,reason,&config_f);
+               add_kline(0,"<Config>",reason,host);
+               log(DEBUG,"Read K line (badhost tag): host=%s reason=%s",host,reason);
+       }
+       for (int i = 0; i < ConfValueEnum("exception",&config_f); i++)
+       {
+               ConfValue("exception","host",i,host,&config_f);
+               ConfValue("exception","reason",i,reason,&config_f);
+               add_eline(0,"<Config>",reason,host);
+               log(DEBUG,"Read E line (exception tag): host=%s reason=%s",host,reason);
+       }
+}
+
+// adds a g:line
+
+void add_gline(long duration, const char* source,const char* reason,const char* hostmask)
+{
+       del_gline(hostmask);
+       GLine item;
+       item.duration = duration;
+       strlcpy(item.hostmask,hostmask,199);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,255);
+       item.n_matches = 0;
+       item.set_time = TIME;
+       glines.push_back(item);
+}
+
+// adds an e:line (exception to bans)
+
+void add_eline(long duration, const char* source, const char* reason, const char* hostmask)
+{
+        del_eline(hostmask);
+        ELine item;
+        item.duration = duration;
+        strlcpy(item.hostmask,hostmask,199);
+        strlcpy(item.reason,reason,MAXBUF);
+        strlcpy(item.source,source,255);
+        item.n_matches = 0;
+        item.set_time = TIME;
+        elines.push_back(item);
+}
+
+// adds a q:line
+
+void add_qline(long duration, const char* source, const char* reason, const char* nickname)
+{
+       del_qline(nickname);
+       QLine item;
+       item.duration = duration;
+       strlcpy(item.nick,nickname,63);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,255);
+       item.n_matches = 0;
+       item.is_global = false;
+       item.set_time = TIME;
+       qlines.push_back(item);
+}
+
+// adds a z:line
+
+void add_zline(long duration, const char* source, const char* reason, const char* ipaddr)
+{
+       del_zline(ipaddr);
+       ZLine item;
+       item.duration = duration;
+       if (strchr(ipaddr,'@'))
+       {
+               while (*ipaddr != '@')
+                       ipaddr++;
+               ipaddr++;
+       }
+       strlcpy(item.ipaddr,ipaddr,39);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,255);
+       item.n_matches = 0;
+       item.is_global = false;
+       item.set_time = TIME;
+       zlines.push_back(item);
+}
+
+// adds a k:line
+
+void add_kline(long duration, const char* source, const char* reason, const char* hostmask)
+{
+       del_kline(hostmask);
+       KLine item;
+       item.duration = duration;
+       strlcpy(item.hostmask,hostmask,200);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,255);
+       item.n_matches = 0;
+       item.set_time = TIME;
+       klines.push_back(item);
+}
+
+// deletes a g:line, returns true if the line existed and was removed
+
+bool del_gline(const char* hostmask)
+{
+       for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
+       {
+               if (!strcasecmp(hostmask,i->hostmask))
+               {
+                       glines.erase(i);
+                       return true;
+               }
+       }
+       return false;
+}
+
+// deletes a e:line, returns true if the line existed and was removed
+
+bool del_eline(const char* hostmask)
+{
+        for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
+        {
+                if (!strcasecmp(hostmask,i->hostmask))
+                {
+                        elines.erase(i);
+                        return true;
+                }
+        }
+        return false;
+}
+
+// deletes a q:line, returns true if the line existed and was removed
+
+bool del_qline(const char* nickname)
+{
+       for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
+       {
+               if (!strcasecmp(nickname,i->nick))
+               {
+                       qlines.erase(i);
+                       return true;
+               }
+       }
+       return false;
+}
+
+bool qline_make_global(const char* nickname)
+{
+       for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
+       {
+               if (!strcasecmp(nickname,i->nick))
+               {
+                       i->is_global = true;
+                       return true;
+               }
+       }
+       return false;
+}
+
+bool zline_make_global(const char* ipaddr)
+{
+       for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
+       {
+               if (!strcasecmp(ipaddr,i->ipaddr))
+               {
+                       i->is_global = true;
+                       return true;
+               }
+       }
+       return false;
+}
+
+// deletes a z:line, returns true if the line existed and was removed
+
+bool del_zline(const char* ipaddr)
+{
+       for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
+       {
+               if (!strcasecmp(ipaddr,i->ipaddr))
+               {
+                       zlines.erase(i);
+                       return true;
+               }
+       }
+       return false;
+}
+
+// deletes a k:line, returns true if the line existed and was removed
+
+bool del_kline(const char* hostmask)
+{
+       for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
+       {
+               if (!strcasecmp(hostmask,i->hostmask))
+               {
+                       klines.erase(i);
+                       return true;
+               }
+       }
+       return false;
+}
+
+// returns a pointer to the reason if a nickname matches a qline, NULL if it didnt match
+
+char* matches_qline(const char* nick)
+{
+       if (qlines.empty())
+               return NULL;
+       for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
+       {
+               if (match(nick,i->nick))
+               {
+                       return i->reason;
+               }
+       }
+       return NULL;
+}
+
+// returns a pointer to the reason if a host matches a gline, NULL if it didnt match
+
+char* matches_gline(const char* host)
+{
+        if (glines.empty())
+                return NULL;
+       for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
+       {
+               if (match(host,i->hostmask))
+               {
+                       return i->reason;
+               }
+       }
+       return NULL;
+}
+
+char* matches_exception(const char* host)
+{
+        if (elines.empty())
+                return NULL;
+       char host2[MAXBUF];
+       snprintf(host2,MAXBUF,"*@%s",host);
+        for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
+        {
+                if ((match(host,i->hostmask)) || (match(host2,i->hostmask)))
+                {
+                        return i->reason;
+                }
+        }
+        return NULL;
+}
+
+
+void gline_set_creation_time(char* host, time_t create_time)
+{
+       for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
+       {
+               if (!strcasecmp(host,i->hostmask))
+               {
+                       i->set_time = create_time;
+                       return;
+               }
+       }
+       return ;        
+}
+
+void qline_set_creation_time(char* nick, time_t create_time)
+{
+       for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
+       {
+               if (!strcasecmp(nick,i->nick))
+               {
+                       i->set_time = create_time;
+                       return;
+               }
+       }
+       return ;        
+}
+
+void zline_set_creation_time(char* ip, time_t create_time)
+{
+       for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
+       {
+               if (!strcasecmp(ip,i->ipaddr))
+               {
+                       i->set_time = create_time;
+                       return;
+               }
+       }
+       return ;        
+}
+
+// returns a pointer to the reason if an ip address matches a zline, NULL if it didnt match
+
+char* matches_zline(const char* ipaddr)
+{
+        if (zlines.empty())
+                return NULL;
+       for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
+       {
+               if (match(ipaddr,i->ipaddr))
+               {
+                       return i->reason;
+               }
+       }
+       return NULL;
+}
+
+// returns a pointer to the reason if a host matches a kline, NULL if it didnt match
+
+char* matches_kline(const char* host)
+{
+        if (klines.empty())
+                return NULL;
+       for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
+       {
+               if (match(host,i->hostmask))
+               {
+                       return i->reason;
+               }
+       }
+       return NULL;
+}
+
+// removes lines that have expired
+
+void expire_lines()
+{
+       bool go_again = true;
+       time_t current = TIME;
+       
+       // because we mess up an iterator when we remove from the vector, we must bail from
+       // the loop early if we delete an item, therefore this outer while loop is required.
+       //
+       // 30/11/2005-- I can imagine that if we get a large number of *lines, this would perform dog slow.
+       // While we try and think of a better solution, for now I've simply split the loops up, instead of
+       // one huge while () -- this means if we remove a g-line, we only need to re-check glines, not z/g/.
+       // lines too, hopefully a little faster, even if it looks a little messier ;) --w00t
+
+       while (go_again)
+       {
+               go_again = false;
+
+               for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
+               {
+                       if ((current > (i->duration + i->set_time)) && (i->duration > 0))
+                       {
+                               WriteOpers("Expiring timed K-Line %s (set by %s %d seconds ago)",i->hostmask,i->source,i->duration);
+                               klines.erase(i);
+                               go_again = true;
+                               break;
+                       }
+               }
+       }
+
+       go_again = true;
+
+       while (go_again)
+       {
+               go_again = false;
+
+                for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
+                {
+                        if ((current > (i->duration + i->set_time)) && (i->duration > 0))
+                        {
+                                WriteOpers("Expiring timed E-Line %s (set by %s %d seconds ago)",i->hostmask,i->source,i->duration);
+                                elines.erase(i);
+                                go_again = true;
+                                break;
+                        }
+                }
+       }
+
+       go_again = true;
+
+       while (go_again)
+       {
+               go_again = false;
+
+               for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
+               {
+                       if ((current > (i->duration + i->set_time)) && (i->duration > 0))
+                       {
+                               WriteOpers("Expiring timed G-Line %s (set by %s %d seconds ago)",i->hostmask,i->source,i->duration);
+                               glines.erase(i);
+                               go_again = true;
+                               break;
+                       }
+               }
+       }
+
+       go_again = true;
+
+       while (go_again)
+       {
+               go_again = false;
+
+               for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
+               {
+                       if ((current > (i->duration + i->set_time)) && (i->duration > 0))
+                       {
+                               WriteOpers("Expiring timed Z-Line %s (set by %s %d seconds ago)",i->ipaddr,i->source,i->duration);
+                               zlines.erase(i);
+                               go_again = true;
+                               break;
+                       }
+               }
+       }
+
+       go_again = true;
+
+
+       while (go_again)
+       {
+               go_again = false;
+
+               for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
+               {
+                       if ((current > (i->duration + i->set_time)) && (i->duration > 0))
+                       {
+                               WriteOpers("Expiring timed Q-Line %s (set by %s %d seconds ago)",i->nick,i->source,i->duration);
+                               qlines.erase(i);
+                               go_again = true;
+                               break;
+                       }
+               }
+       }
+}
+
+// applies lines, removing clients and changing nicks etc as applicable
+
+void apply_lines()
+{
+       bool go_again = true;
+       char reason[MAXBUF];
+       char host[MAXBUF];
+       
+       if ((!glines.size()) && (!klines.size()) && (!zlines.size()) && (!qlines.size()))
+               return;
+       
+       while (go_again)
+       {
+               go_again = false;
+               for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
+               {
+                       if (!strcasecmp(u->second->server,ServerName))
+                       {
+                               snprintf(host,MAXBUF,"%s@%s",u->second->ident,u->second->host);
+                               if (elines.size())
+                               {
+                                       // ignore people matching exempts
+                                       if (matches_exception(host))
+                                               continue;
+                               }
+                               if (glines.size())
+                               {
+                                       char* check = matches_gline(host);
+                                       if (check)
+                                       {
+                                               WriteOpers("*** User %s matches G-Line: %s",u->second->registered == 7 ? u->second->nick:"<unknown>",check);
+                                               snprintf(reason,MAXBUF,"G-Lined: %s",check);
+                                               kill_link(u->second,reason);
+                                               go_again = true;
+                                               break;
+                                       }
+                               }
+                               if (klines.size())
+                               {
+                                       char* check = matches_kline(host);
+                                       if (check)
+                                       {
+                                               WriteOpers("*** User %s matches K-Line: %s",u->second->registered == 7 ? u->second->nick:"<unknown>",check);
+                                               snprintf(reason,MAXBUF,"K-Lined: %s",check);
+                                               kill_link(u->second,reason);
+                                               go_again = true;
+                                               break;
+                                       }
+                               }
+                               if (qlines.size())
+                               {
+                                       char* check = matches_qline(u->second->nick);
+                                       if (check)
+                                       {
+                                               snprintf(reason,MAXBUF,"Matched Q-Lined nick: %s",check);
+                                               WriteOpers("*** Q-Lined nickname %s from %s: %s",u->second->registered == 7 ? u->second->nick:"<unknown>",u->second->host,check);
+                                               kill_link(u->second,reason);
+                                               go_again = true;
+                                               break;
+                                       }
+                               }
+                               if (zlines.size())
+                               {
+                                       char* check = matches_zline(u->second->ip);
+                                       if (check)
+                                       {
+                                               snprintf(reason,MAXBUF,"Z-Lined: %s",check);
+                                               WriteOpers("*** User %s matches Z-Line: %s",u->second->registered == 7 ? u->second->nick:"<unknown>",u->second->host,check);
+                                               kill_link(u->second,reason);
+                                               go_again = true;
+                                               break;
+                                       }
+                               }
+                       }
+               }
+       }
+}
+
+void stats_k(userrec* user)
+{
+       for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
+       {
+               WriteServ(user->fd,"216 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
+       }
+}
+
+void stats_g(userrec* user)
+{
+       for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
+       {
+               WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
+       }
+}
+
+void stats_q(userrec* user)
+{
+       for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
+       {
+               WriteServ(user->fd,"217 %s :%s %d %d %s %s",user->nick,i->nick,i->set_time,i->duration,i->source,i->reason);
+       }
+}
+
+void stats_z(userrec* user)
+{
+       for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
+       {
+               WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->ipaddr,i->set_time,i->duration,i->source,i->reason);
+       }
+}
 
+void stats_e(userrec* user)
+{
+        for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++)
+        {
+                WriteServ(user->fd,"223 %s :%s %d %d %s %s",user->nick,i->hostmask,i->set_time,i->duration,i->source,i->reason);
+        }
+}