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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
enum SerializeFormat
{
/** Shown to a human (does not need to be unserializable) */
FORMAT_USER,
/** Passed internally to this process (i.e. for /RELOADMODULE) */
FORMAT_INTERNAL,
/** Passed to other servers on the network (i.e. METADATA s2s command) */
FORMAT_NETWORK,
/** Stored on disk (i.e. permchannel database) */
FORMAT_PERSIST
};
/** Class represnting an extension of some object
*/
class CoreExport ExtensionItem : public ServiceProvider, public usecountbase
{
public:
ExtensionItem(const std::string& key, Module* owner);
virtual ~ExtensionItem();
/** Serialize this item into a string
*
* @param format The format to serialize to
* @param container The object containing this item
* @param item The item itself
*/
virtual std::string serialize(SerializeFormat format, const Extensible* container, void* item) const = 0;
/** Convert the string form back into an item
* @param format The format to serialize from (not FORMAT_USER)
* @param container The object that this item applies to
* @param value The return from a serialize() call that was run elsewhere with this key
*/
virtual void unserialize(SerializeFormat format, Extensible* container, const std::string& value) = 0;
/** Free the item */
virtual void free(void* item) = 0;
protected:
/** Get the item from the internal map */
void* get_raw(const Extensible* container) const;
/** Set the item in the internal map; returns old value */
void* set_raw(Extensible* container, void* value);
/** Remove the item from the internal map; returns old value */
void* unset_raw(Extensible* container);
};
/** class Extensible is the parent class of many classes such as User and Channel.
* class Extensible implements a system which allows modules to 'extend' the class by attaching data within
* a map associated with the object. In this way modules can store their own custom information within user
* objects, channel objects and server objects, without breaking other modules (this is more sensible than using
* a flags variable, and each module defining bits within the flag as 'theirs' as it is less prone to conflict and
* supports arbitary data storage).
*/
class CoreExport Extensible : public classbase
{
public:
typedef insp::flat_map<reference<ExtensionItem>, void*> ExtensibleStore;
// Friend access for the protected getter/setter
friend class ExtensionItem;
private:
/** Private data store.
* Holds all extensible metadata for the class.
*/
ExtensibleStore extensions;
/** True if this Extensible has been culled.
* A warning is generated if false on destruction.
*/
unsigned int culled:1;
public:
/**
* Get the extension items for iteraton (i.e. for metadata sync during netburst)
*/
inline const ExtensibleStore& GetExtList() const { return extensions; }
Extensible();
virtual CullResult cull();
virtual ~Extensible();
void doUnhookExtensions(const std::vector<reference<ExtensionItem> >& toRemove);
/**
* Free all extension items attached to this Extensible
*/
void FreeAllExtItems();
};
class CoreExport ExtensionManager
{
std::map<std::string, reference<ExtensionItem> > types;
public:
bool Register(ExtensionItem* item);
void BeginUnregister(Module* module, std::vector<reference<ExtensionItem> >& list);
ExtensionItem* GetItem(const std::string& name);
};
/** Base class for items that are NOT synchronized between servers */
class CoreExport LocalExtItem : public ExtensionItem
{
public:
LocalExtItem(const std::string& key, Module* owner);
virtual ~LocalExtItem();
virtual std::string serialize(SerializeFormat format, const Extensible* container, void* item) const;
virtual void unserialize(SerializeFormat format, Extensible* container, const std::string& value);
virtual void free(void* item) = 0;
};
template <typename T, typename Del = stdalgo::defaultdeleter<T> >
class SimpleExtItem : public LocalExtItem
{
public:
SimpleExtItem(const std::string& Key, Module* parent) : LocalExtItem(Key, parent)
{
}
virtual ~SimpleExtItem()
{
}
inline T* get(const Extensible* container) const
{
return static_cast<T*>(get_raw(container));
}
inline void set(Extensible* container, const T& value)
{
T* ptr = new T(value);
T* old = static_cast<T*>(set_raw(container, ptr));
Del del;
del(old);
}
inline void set(Extensible* container, T* value)
{
T* old = static_cast<T*>(set_raw(container, value));
Del del;
del(old);
}
inline void unset(Extensible* container)
{
T* old = static_cast<T*>(unset_raw(container));
Del del;
del(old);
}
virtual void free(void* item)
{
Del del;
del(static_cast<T*>(item));
}
};
class CoreExport LocalStringExt : public SimpleExtItem<std::string>
{
public:
LocalStringExt(const std::string& key, Module* owner);
virtual ~LocalStringExt();
std::string serialize(SerializeFormat format, const Extensible* container, void* item) const;
};
class CoreExport LocalIntExt : public LocalExtItem
{
public:
LocalIntExt(const std::string& key, Module* owner);
virtual ~LocalIntExt();
std::string serialize(SerializeFormat format, const Extensible* container, void* item) const;
intptr_t get(const Extensible* container) const;
intptr_t set(Extensible* container, intptr_t value);
void unset(Extensible* container) { set(container, 0); }
void free(void* item);
};
class CoreExport StringExtItem : public ExtensionItem
{
public:
StringExtItem(const std::string& key, Module* owner);
virtual ~StringExtItem();
std::string* get(const Extensible* container) const;
std::string serialize(SerializeFormat format, const Extensible* container, void* item) const;
void unserialize(SerializeFormat format, Extensible* container, const std::string& value);
void set(Extensible* container, const std::string& value);
void unset(Extensible* container);
void free(void* item);
};
|
