]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/xline.cpp
A few anti-flood features
[user/henk/code/inspircd.git] / src / xline.cpp
index 152ca6e822b2f649e3466c0621e438d4581d8b5c..92f5ac3a42067f8309cff510fac4043aff7338fb 100644 (file)
@@ -1,3 +1,19 @@
+/*       +------------------------------------+
+ *       | 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.
+ *
+ * ---------------------------------------------------
+ */
+
 #include "inspircd.h"
 #include "inspircd_io.h"
 #include "inspircd_util.h"
@@ -34,6 +50,7 @@
 #include "message.h"
 #include "commands.h"
 #include "xline.h"
+#include "inspstring.h"
 
 #ifdef GCC3
 #define nspace __gnu_cxx
@@ -45,8 +62,8 @@
 using namespace std;
 
 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];
@@ -74,7 +91,6 @@ extern time_t nb_start;
 extern std::vector<int> fd_reap;
 extern std::vector<std::string> module_names;
 
-extern char bannerBuffer[MAXBUF];
 extern int boundPortCount;
 extern int portCount;
 extern int UDPportCount;
@@ -90,7 +106,11 @@ extern FILE *log_file;
 
 namespace nspace
 {
+#ifdef GCC34
+       template<> struct hash<in_addr>
+#else
        template<> struct nspace::hash<in_addr>
+#endif
        {
                size_t operator()(const struct in_addr &a) const
                {
@@ -99,14 +119,17 @@ namespace nspace
                        return q;
                }
        };
-
+#ifdef GCC34
+       template<> struct hash<string>
+#else
        template<> struct nspace::hash<string>
+#endif
        {
                size_t operator()(const string &s) const
                {
                        char a[MAXBUF];
                        static struct hash<const char *> strhash;
-                       strcpy(a,s.c_str());
+                       strlcpy(a,s.c_str(),MAXBUF);
                        strlower(a);
                        return strhash(a);
                }
@@ -120,8 +143,10 @@ struct StrHashComp
        bool operator()(const string& s1, const string& s2) const
        {
                char a[MAXBUF],b[MAXBUF];
-               strcpy(a,s1.c_str());
-               strcpy(b,s2.c_str());
+               strlcpy(a,s1.c_str(),MAXBUF);
+               strlcpy(b,s2.c_str(),MAXBUF);
+                strlower(a);
+                strlower(b);
                return (strcasecmp(a,b) == 0);
        }
 
@@ -158,11 +183,13 @@ 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
@@ -199,71 +226,95 @@ void read_xline_defaults()
                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, char* source, char* reason, char* hostmask)
+void add_gline(long duration, const char* source,const char* reason,const char* hostmask)
 {
        del_gline(hostmask);
        GLine item;
        item.duration = duration;
-       strncpy(item.hostmask,hostmask,MAXBUF);
-       strncpy(item.reason,reason,MAXBUF);
-       strncpy(item.source,source,MAXBUF);
+       strlcpy(item.hostmask,hostmask,MAXBUF);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,MAXBUF);
        item.n_matches = 0;
-       item.set_time = time(NULL);
+       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,MAXBUF);
+        strlcpy(item.reason,reason,MAXBUF);
+        strlcpy(item.source,source,MAXBUF);
+        item.n_matches = 0;
+        item.set_time = TIME;
+        elines.push_back(item);
+}
+
 // adds a q:line
 
-void add_qline(long duration, char* source, char* reason, char* nickname)
+void add_qline(long duration, const char* source, const char* reason, const char* nickname)
 {
        del_qline(nickname);
        QLine item;
        item.duration = duration;
-       strncpy(item.nick,nickname,MAXBUF);
-       strncpy(item.reason,reason,MAXBUF);
-       strncpy(item.source,source,MAXBUF);
+       strlcpy(item.nick,nickname,MAXBUF);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,MAXBUF);
        item.n_matches = 0;
-       item.set_time = time(NULL);
+       item.is_global = false;
+       item.set_time = TIME;
        qlines.push_back(item);
 }
 
 // adds a z:line
 
-void add_zline(long duration, char* source, char* reason, char* ipaddr)
+void add_zline(long duration, const char* source, const char* reason, const char* ipaddr)
 {
        del_zline(ipaddr);
        ZLine item;
        item.duration = duration;
-       strncpy(item.ipaddr,ipaddr,MAXBUF);
-       strncpy(item.reason,reason,MAXBUF);
-       strncpy(item.source,source,MAXBUF);
+       strlcpy(item.ipaddr,ipaddr,MAXBUF);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,MAXBUF);
        item.n_matches = 0;
-       item.set_time = time(NULL);
+       item.is_global = false;
+       item.set_time = TIME;
        zlines.push_back(item);
 }
 
 // adds a k:line
 
-void add_kline(long duration, char* source, char* reason, char* hostmask)
+void add_kline(long duration, const char* source, const char* reason, const char* hostmask)
 {
        del_kline(hostmask);
        KLine item;
        item.duration = duration;
-       strncpy(item.hostmask,hostmask,MAXBUF);
-       strncpy(item.reason,reason,MAXBUF);
-       strncpy(item.source,source,MAXBUF);
+       strlcpy(item.hostmask,hostmask,MAXBUF);
+       strlcpy(item.reason,reason,MAXBUF);
+       strlcpy(item.source,source,MAXBUF);
        item.n_matches = 0;
-       item.set_time = time(NULL);
+       item.set_time = TIME;
        klines.push_back(item);
 }
 
 // deletes a g:line, returns true if the line existed and was removed
 
-bool del_gline(char* hostmask)
+bool del_gline(const char* hostmask)
 {
        for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
        {
@@ -276,9 +327,24 @@ bool del_gline(char* hostmask)
        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(char* nickname)
+bool del_qline(const char* nickname)
 {
        for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
        {
@@ -291,9 +357,65 @@ bool del_qline(char* nickname)
        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;
+}
+
+void sync_xlines(serverrec* serv, char* tcp_host)
+{
+       char data[MAXBUF];
+       
+       // for zlines and qlines, we should first check if theyre global...
+       for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
+       {
+               if (i->is_global)
+               {
+                       snprintf(data,MAXBUF,"} %s %s %lu %lu :%s",i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+                       serv->SendPacket(data,tcp_host);
+               }
+       }
+       for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++)
+       {
+               if (i->is_global)
+               {
+                       snprintf(data,MAXBUF,"{ %s %s %lu %lu :%s",i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+                       serv->SendPacket(data,tcp_host);
+               }
+       }
+       // glines are always global, so no need to check
+       for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
+       {
+               snprintf(data,MAXBUF,"# %s %s %lu %lu :%s",i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+               serv->SendPacket(data,tcp_host);
+       }
+}
+
+
 // deletes a z:line, returns true if the line existed and was removed
 
-bool del_zline(char* ipaddr)
+bool del_zline(const char* ipaddr)
 {
        for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++)
        {
@@ -308,7 +430,7 @@ bool del_zline(char* ipaddr)
 
 // deletes a k:line, returns true if the line existed and was removed
 
-bool del_kline(char* hostmask)
+bool del_kline(const char* hostmask)
 {
        for (std::vector<KLine>::iterator i = klines.begin(); i != klines.end(); i++)
        {
@@ -325,6 +447,8 @@ bool del_kline(char* hostmask)
 
 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))
@@ -339,6 +463,8 @@ char* matches_qline(const char* nick)
 
 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))
@@ -349,6 +475,23 @@ char* matches_gline(const char* host)
        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++)
@@ -392,6 +535,8 @@ void zline_set_creation_time(char* ip, time_t create_time)
 
 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))
@@ -406,6 +551,8 @@ char* matches_zline(const char* ipaddr)
 
 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))
@@ -421,7 +568,7 @@ char* matches_kline(const char* host)
 void expire_lines()
 {
        bool go_again = true;
-       time_t current = time(NULL);
+       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.
@@ -440,6 +587,17 @@ void expire_lines()
                        }
                }
 
+                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;
+                        }
+                }
+
                for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++)
                {
                        if ((current > (i->duration + i->set_time)) && (i->duration > 0))
@@ -483,6 +641,9 @@ void apply_lines()
        char reason[MAXBUF];
        char host[MAXBUF];
        
+       if ((!glines.size()) && (!klines.size()) && (!zlines.size()) && (!qlines.size()))
+               return;
+       
        while (go_again)
        {
                go_again = false;
@@ -491,67 +652,62 @@ void apply_lines()
                        if (!strcasecmp(u->second->server,ServerName))
                        {
                                snprintf(host,MAXBUF,"%s@%s",u->second->ident,u->second->host);
-                               char* check = matches_gline(host);
-                               if (check)
+                               if (elines.size())
                                {
-                                       WriteOpers("*** User %s matches G-Line: %s",u->second->nick,check);
-                                       snprintf(reason,MAXBUF,"G-Lined: %s",check);
-                                       kill_link(u->second,reason);
-                                       go_again = true;
-                                       break;
+                                       // ignore people matching exempts
+                                       if (matches_exception(host))
+                                               continue;
                                }
-                       }
-               }
-
-               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);
-                               char* check = matches_kline(host);
-                               if (check)
+                               if (glines.size())
                                {
-                                       WriteOpers("*** User %s matches K-Line: %s",u->second->nick,check);
-                                       snprintf(reason,MAXBUF,"K-Lined: %s",check);
-                                       kill_link(u->second,reason);
-                                       go_again = true;
-                                       break;
+                                       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;
+                                       }
                                }
-                       }
-               }
-
-               for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
-               {
-                       if (!strcasecmp(u->second->server,ServerName))
-                       {
-                               char* check = matches_qline(u->second->nick);
-                               if (check)
+                               if (klines.size())
                                {
-                                       snprintf(reason,MAXBUF,"Matched Q-Lined nick: %s",check);
-                                       WriteOpers("*** Q-Lined nickname %s from %s: %s",u->second->nick,u->second->host,check);
-                                       WriteServ(u->second->fd,"432 %s %s :Invalid nickname: %s",u->second->nick,u->second->nick,check);
-                                       kill_link(u->second,reason);
-                                       go_again = true;
-                                       break;
+                                       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;
+                                       }
                                }
-                       }
-               }
-
-               for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
-               {
-                       if (!strcasecmp(u->second->server,ServerName))
-                       {
-                               char* check = matches_zline(u->second->ip);
-                               if (check)
+                               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())
                                {
-                                       WriteOpers("*** User %s matches Z-Line: %s",u->second->nick,u->second->host,check);
-                                       WriteServ(u->second->fd,"432 %s %s :Invalid nickname: %s",u->second->nick,u->second->nick,check);
-                                       go_again = true;
-                                       break;
+                                       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;
+                                       }
                                }
                        }
                }
-
        }
 }
 
@@ -587,5 +743,10 @@ void stats_z(userrec* user)
        }
 }
 
-
-
+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);
+        }
+}