1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 InspIRCd Development Team
* See: http://www.inspircd.org/wiki/index.php/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
/* $ModDesc: Attempt to block /amsg, at least some of the irritating mIRC scripts. */
enum BlockAction { IBLOCK_KILL, IBLOCK_KILLOPERS, IBLOCK_NOTICE, IBLOCK_NOTICEOPERS, IBLOCK_SILENT };
/* IBLOCK_NOTICE - Send a notice to the user informing them of what happened.
* IBLOCK_NOTICEOPERS - Send a notice to the user informing them and send an oper notice.
* IBLOCK_SILENT - Generate no output, silently drop messages.
* IBLOCK_KILL - Kill the user with the reason "Global message (/amsg or /ame) detected".
* IBLOCK_KILLOPERS - As above, but send an oper notice as well. This is the default.
*/
/** Holds a blocked message's details
*/
class BlockedMessage : public classbase
{
public:
std::string message;
irc::string target;
time_t sent;
BlockedMessage(const std::string &msg, const irc::string &tgt, time_t when)
: message(msg), target(tgt), sent(when)
{
}
};
class ModuleBlockAmsg : public Module
{
int ForgetDelay;
BlockAction action;
public:
ModuleBlockAmsg(InspIRCd* Me)
: Module(Me)
{
this->OnRehash(NULL,"");
Implementation eventlist[] = { I_OnRehash, I_OnPreCommand, I_OnCleanup };
ServerInstance->Modules->Attach(eventlist, this, 3);
}
void Implements(char* List)
{
List[I_OnRehash] = List[I_OnPreCommand] = List[I_OnCleanup] = 1;
}
virtual ~ModuleBlockAmsg()
{
}
virtual Version GetVersion()
{
return Version(1,1,0,0,VF_VENDOR,API_VERSION);
}
virtual void OnRehash(User* user, const std::string ¶meter)
{
ConfigReader Conf(ServerInstance);
ForgetDelay = Conf.ReadInteger("blockamsg", "delay", 0, false);
if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
ForgetDelay = -1;
std::string act = Conf.ReadValue("blockamsg", "action", 0);
if(act == "notice")
action = IBLOCK_NOTICE;
else if(act == "noticeopers")
action = IBLOCK_NOTICEOPERS;
else if(act == "silent")
action = IBLOCK_SILENT;
else if(act == "kill")
action = IBLOCK_KILL;
else
action = IBLOCK_KILLOPERS;
}
virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, User *user, bool validated, const std::string &original_line)
{
// Don't do anything with unregistered users, or remote ones.
if(!user || (user->registered != REG_ALL) || !IS_LOCAL(user))
return 0;
// We want case insensitive command comparison.
// Add std::string contructor for irc::string :x
irc::string cmd = command.c_str();
if(validated && (cmd == "PRIVMSG" || cmd == "NOTICE") && (pcnt >= 2))
{
// parameters[0] should have the target(s) in it.
// I think it will be faster to first check if there are any commas, and if there are then try and parse it out.
// Most messages have a single target so...
int targets = 1;
int userchans = 0;
if(*parameters[0] != '#')
{
// Decrement if the first target wasn't a channel.
targets--;
}
for(const char* c = parameters[0]; *c; c++)
if((*c == ',') && *(c+1) && (*(c+1) == '#'))
targets++;
/* targets should now contain the number of channel targets the msg/notice was pointed at.
* If the msg/notice was a PM there should be no channel targets and 'targets' should = 0.
* We don't want to block PMs so...
*/
if(targets == 0)
{
return 0;
}
userchans = user->chans.size();
// Check that this message wasn't already sent within a few seconds.
BlockedMessage* m;
user->GetExt("amsgblock", m);
// If the message is identical and within the time.
// We check the target is *not* identical, that'd straying into the realms of flood control. Which isn't what we're doing...
// OR
// The number of target channels is equal to the number of channels the sender is on..a little suspicious.
// Check it's more than 1 too, or else users on one channel would have fun.
if((m && (m->message == parameters[1]) && (m->target != parameters[0]) && (ForgetDelay != -1) && (m->sent >= ServerInstance->Time()-ForgetDelay)) || ((targets > 1) && (targets == userchans)))
{
// Block it...
if(action == IBLOCK_KILLOPERS || action == IBLOCK_NOTICEOPERS)
ServerInstance->WriteOpers("*** %s had an /amsg or /ame denied", user->nick);
if(action == IBLOCK_KILL || action == IBLOCK_KILLOPERS)
User::QuitUser(ServerInstance, user, "Global message (/amsg or /ame) detected");
else if(action == IBLOCK_NOTICE || action == IBLOCK_NOTICEOPERS)
user->WriteServ( "NOTICE %s :Global message (/amsg or /ame) detected", user->nick);
return 1;
}
if(m)
{
// If there's already a BlockedMessage allocated, use it.
m->message = parameters[1];
m->target = parameters[0];
m->sent = ServerInstance->Time();
}
else
{
m = new BlockedMessage(parameters[1], parameters[0], ServerInstance->Time());
user->Extend("amsgblock", (char*)m);
}
}
return 0;
}
void OnCleanup(int target_type, void* item)
{
if(target_type == TYPE_USER)
{
User* user = (User*)item;
BlockedMessage* m;
user->GetExt("amsgblock", m);
if(m)
{
delete m;
user->Shrink("amsgblock");
}
}
}
};
MODULE_INIT(ModuleBlockAmsg)
|
