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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2008 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.
*
* ---------------------------------------------------
*/
/* $ModDesc: Provides a spanning tree server link protocol */
#include "inspircd.h"
#include "wildcard.h"
#include "m_spanningtree/main.h"
#include "m_spanningtree/utils.h"
#include "m_spanningtree/treeserver.h"
#include "m_spanningtree/treesocket.h"
/* $ModDep: m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/treesocket.h */
const std::string ModuleSpanningTree::MapOperInfo(TreeServer* Current)
{
time_t secs_up = ServerInstance->Time() - Current->age;
return (" [Up: " + TimeToStr(secs_up) + " Lag: " + (Current->rtt == 0 ? "<1" : ConvToStr(Current->rtt)) + "ms]");
}
// WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
void ModuleSpanningTree::ShowMap(TreeServer* Current, User* user, int depth, char matrix[128][128], float &totusers, float &totservers)
{
ServerInstance->Logs->Log("map",DEBUG,"ShowMap depth %d totusers %0.2f totservers %0.2f", depth, totusers, totservers);
if (line < 128)
{
for (int t = 0; t < depth; t++)
{
ServerInstance->Logs->Log("map",DEBUG,"Zero to depth");
matrix[line][t] = ' ';
}
// For Aligning, we need to work out exactly how deep this thing is, and produce
// a 'Spacer' String to compensate.
char spacer[40];
memset(spacer,' ',40);
if ((40 - Current->GetName().length() - depth) > 1) {
spacer[40 - Current->GetName().length() - depth] = '\0';
}
else
{
spacer[5] = '\0';
}
float percent;
char text[128];
/* Neat and tidy default values, as we're dealing with a matrix not a simple string */
memset(text, 0, 128);
if (ServerInstance->Users->clientlist->size() == 0)
{
// If there are no users, WHO THE HELL DID THE /MAP?!?!?!
percent = 0;
}
else
{
percent = ((float)Current->GetUserCount() / (float)ServerInstance->Users->clientlist->size()) * 100;
}
const std::string operdata = IS_OPER(user) ? MapOperInfo(Current) : "";
snprintf(text, 126, "%s (%s)%s%5d [%5.2f%%]%s", Current->GetName().c_str(), Current->GetID().c_str(), spacer, Current->GetUserCount(), percent, operdata.c_str());
totusers += Current->GetUserCount();
totservers++;
strlcpy(&matrix[line][depth],text,126);
line++;
ServerInstance->Logs->Log("map",DEBUG,"Increment line to %d, ChildCount %d", line, Current->ChildCount());
for (unsigned int q = 0; q < Current->ChildCount(); q++)
{
ServerInstance->Logs->Log("map",DEBUG,"Hidden? %d HideULines? %d GetName %s", Current->GetChild(q)->Hidden, Utils->HideULines, Current->GetChild(q)->GetName().c_str());
if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))))
{
if (IS_OPER(user))
{
ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!IS_OPER(user))) ? depth : depth+2,matrix,totusers,totservers);
ServerInstance->Logs->Log("map",DEBUG,"Show to oper");
}
ServerInstance->Logs->Log("map",DEBUG,"Fall through");
}
else
{
ShowMap(Current->GetChild(q),user,(Utils->FlatLinks && (!IS_OPER(user))) ? depth : depth+2,matrix,totusers,totservers);
ServerInstance->Logs->Log("map",DEBUG,"Show to non oper");
}
}
ServerInstance->Logs->Log("map",DEBUG,"After loop");
}
}
// Ok, prepare to be confused.
// After much mulling over how to approach this, it struck me that
// the 'usual' way of doing a /MAP isnt the best way. Instead of
// keeping track of a ton of ascii characters, and line by line
// under recursion working out where to place them using multiplications
// and divisons, we instead render the map onto a backplane of characters
// (a character matrix), then draw the branches as a series of "L" shapes
// from the nodes. This is not only friendlier on CPU it uses less stack.
int ModuleSpanningTree::HandleMap(const std::vector<std::string>& parameters, User* user)
{
if (parameters.size() > 0)
{
/* Remote MAP, the server is within the 1st parameter */
TreeServer* s = Utils->FindServerMask(parameters[0]);
bool ret = false;
if (!s)
{
user->WriteServ( "402 %s %s :No such server", user->nick.c_str(), parameters[0].c_str());
ret = true;
}
else if (s && s != Utils->TreeRoot)
{
std::deque<std::string> params;
params.push_back(parameters[0]);
params[0] = s->GetName();
Utils->DoOneToOne(user->uuid, "MAP", params, s->GetName());
ret = true;
}
// Don't return if s == Utils->TreeRoot (us)
if (ret)
return 1;
}
// This array represents a virtual screen which we will
// "scratch" draw to, as the console device of an irc
// client does not provide for a proper terminal.
float totusers = 0;
float totservers = 0;
static char matrix[128][128];
for (unsigned int t = 0; t < 128; t++)
{
matrix[t][0] = '\0';
}
line = 0;
// The only recursive bit is called here.
ShowMap(Utils->TreeRoot,user,0,matrix,totusers,totservers);
// Process each line one by one. The algorithm has a limit of
// 128 servers (which is far more than a spanning tree should have
// anyway, so we're ok). This limit can be raised simply by making
// the character matrix deeper, 128 rows taking 10k of memory.
for (int l = 1; l < line; l++)
{
// scan across the line looking for the start of the
// servername (the recursive part of the algorithm has placed
// the servers at indented positions depending on what they
// are related to)
int first_nonspace = 0;
while (matrix[l][first_nonspace] == ' ')
{
first_nonspace++;
}
first_nonspace--;
// Draw the `- (corner) section: this may be overwritten by
// another L shape passing along the same vertical pane, becoming
// a |- (branch) section instead.
matrix[l][first_nonspace] = '-';
matrix[l][first_nonspace-1] = '`';
int l2 = l - 1;
// Draw upwards until we hit the parent server, causing possibly
// other corners (`-) to become branches (|-)
while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
{
matrix[l2][first_nonspace-1] = '|';
l2--;
}
}
float avg_users = totusers / totservers;
// dump the whole lot to the user.
if (IS_LOCAL(user))
{
ServerInstance->Logs->Log("map",DEBUG,"local");
for (int t = 0; t < line; t++)
{
user->WriteNumeric(6, "%s :%s",user->nick.c_str(),&matrix[t][0]);
}
user->WriteNumeric(270, "%s :%.0f server%s and %.0f user%s, average %.2f users per server",user->nick.c_str(),totservers,(totservers > 1 ? "s" : ""),totusers,(totusers > 1 ? "s" : ""),avg_users);
user->WriteNumeric(7, "%s :End of /MAP",user->nick.c_str());
}
else
{
//void SpanningTreeProtocolInterface::PushToClient(User* target, const std::string &rawline)
//
ServerInstance->Logs->Log("map", DEBUG, "remote dump lines=%d", line);
for (int t = 0; t < line; t++)
{
ServerInstance->Logs->Log("map",DEBUG,"Dump %d", line);
ServerInstance->PI->PushToClient(user, std::string("::") + ServerInstance->Config->ServerName + " 006 " + user->nick + " :" + &matrix[t][0]);
}
ServerInstance->PI->PushToClient(user, std::string("::") + ServerInstance->Config->ServerName + " 270 " + user->nick + " :" + ConvToStr(totservers) + " server"+(totservers > 1 ? "s" : "") + " and " + ConvToStr(totusers) + " user"+(totusers > 1 ? "s" : "") + ", average " + ConvToStr(avg_users) + " users per server");
ServerInstance->PI->PushToClient(user, std::string("::") + ServerInstance->Config->ServerName + " 007 " + user->nick + " :End of /MAP");
}
return 1;
}
|
