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
|
/*
Jabber Protocol Plugin for Miranda NG
Copyright (c) 2018 Miranda NG team
This program 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; either version 2
of the License, or (at your option) any later version.
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "stdafx.h"
#include "jabber_strm_mgmt.h"
strm_mgmt::strm_mgmt(CJabberProto *_proto) : proto(_proto), m_bStrmMgmtPendingEnable(false),
m_bStrmMgmtEnabled(false),
m_bStrmMgmtResumeSupported(false)
{
}
void strm_mgmt::OnProcessEnabled(HXML node, ThreadData * /*info*/)
{
m_bStrmMgmtEnabled = true;
auto val = XmlGetAttrValue(node, L"max");
m_nStrmMgmtResumeMaxSeconds = _wtoi(val);
val = XmlGetAttrValue(node, L"resume");
if (mir_wstrcmp(val, L"true") || mir_wstrcmp(val, L"1"))
m_bStrmMgmtResumeSupported = true;
m_sStrmMgmtResumeId = XmlGetAttrValue(node, L"id");
m_nStrmMgmtLocalHCount = 0;
m_nStrmMgmtSrvHCount = 0;
}
void strm_mgmt::OnProcessSMa(HXML node)
{
if (!mir_wstrcmp(XmlGetAttrValue(node, L"xmlns"), L"urn:xmpp:sm:3"))
{
auto val = XmlGetAttrValue(node, L"h");
uint32_t iVal = _wtoi(val);
m_nStrmMgmtSrvHCount = iVal;
int size = m_nStrmMgmtLocalSCount - m_nStrmMgmtSrvHCount;
if (size < 0)
{
//TODO: this should never happen, indicates server side bug
//TODO: once our client side implementation good enough, abort stream in this case, noop for now
}
else if (size > 0 && !NodeCache.empty()) //TODO: NodeCache cannot be empty if size >0, it's a bug
{
if (size <= NodeCache.size()) //TODO: size should not be larger than NodeCache.size(), another bug
{
const size_t diff = NodeCache.size() - size;
if (diff)
{
size_t diff_tmp = diff;
for (auto i : NodeCache)
{
if (diff_tmp > 0)
{
xmlFree(i);
diff_tmp--;
}
}
diff_tmp = diff;
while (diff_tmp)
{
NodeCache.pop_front();
diff_tmp--;
}
}
}
std::list<HXML> tmp_list = NodeCache;
NodeCache.clear();
for (auto i : tmp_list)
{
proto->m_ThreadInfo->send_no_strm_mgmt(i); //freed by send ?
//xmlFree(i);
}
}
else
{
for (auto i : NodeCache)
xmlFree(i);
NodeCache.clear();
}
}
}
void strm_mgmt::OnProcessSMr(HXML node)
{
if (!mir_wstrcmp(XmlGetAttrValue(node, L"xmlns"), L"urn:xmpp:sm:3"))
SendAck();
}
void strm_mgmt::OnProcessFailed(HXML node, ThreadData * /*info*/) //used failed instead of failure, notes: https://xmpp.org/extensions/xep-0198.html#errors
{
if (!mir_wstrcmp(XmlGetAttrValue(node, L"xmlns"), L"urn:xmpp:sm:3"))
{
//TODO: handle failure
}
}
void strm_mgmt::CheckStreamFeatures(HXML node)
{
if (!mir_wstrcmp(XmlGetName(node), L"sm"))
{
if (!mir_wstrcmp(XmlGetAttrValue(node, L"xmlns"), L"urn:xmpp:sm:3")) //we work only with version 3 or higher of sm
{
if (!(proto->m_bJabberOnline))
m_bStrmMgmtPendingEnable = true;
else
EnableStrmMgmt();
}
}
}
void strm_mgmt::CheckState()
{
if (m_bStrmMgmtPendingEnable)
EnableStrmMgmt();
//TODO: resume stream from here ?
}
void strm_mgmt::HandleOutgoingNode(HXML node)
{
if (!m_bStrmMgmtEnabled)
return;
m_nStrmMgmtLocalSCount++;
NodeCache.push_back(xmlCopyNode(node));
if ((m_nStrmMgmtLocalSCount - m_nStrmMgmtSrvHCount) >= m_nStrmMgmtCacheSize)
{
XmlNode enable_sm(L"r");
XmlAddAttr(enable_sm, L"xmlns", L"urn:xmpp:sm:3");
proto->m_ThreadInfo->send_no_strm_mgmt(enable_sm);
}
}
void strm_mgmt::OnDisconnect()
{
//TODO: following should be redone once resumption implemented
//reset state of stream management
m_bStrmMgmtEnabled = false;
m_bStrmMgmtPendingEnable = false;
//reset stream management h counters
m_nStrmMgmtLocalHCount = m_nStrmMgmtLocalSCount = m_nStrmMgmtSrvHCount = 0;
}
void strm_mgmt::HandleIncommingNode(HXML node)
{
if (m_bStrmMgmtEnabled && mir_wstrcmp(XmlGetName(node), L"r") && mir_wstrcmp(XmlGetName(node), L"a")) //TODO: something better
m_nStrmMgmtLocalHCount++;
else if (!mir_wstrcmp(XmlGetName(node), L"r"))
OnProcessSMr(node);
else if (!mir_wstrcmp(XmlGetName(node), L"a"))
OnProcessSMa(node);
}
void strm_mgmt::EnableStrmMgmt()
{
XmlNode enable_sm(L"enable");
XmlAddAttr(enable_sm, L"xmlns", L"urn:xmpp:sm:3");
XmlAddAttr(enable_sm, L"resume", L"true"); //enable resumption (most useful part of this xep)
proto->m_ThreadInfo->send(enable_sm);
m_nStrmMgmtLocalSCount = 1; //TODO: this MUST be 0, i have bug somewhere.
}
void strm_mgmt::SendAck()
{
if (!m_bStrmMgmtEnabled)
return;
XmlNode enable_sm(L"a");
XmlAddAttr(enable_sm, L"xmlns", L"urn:xmpp:sm:3");
xmlAddAttrInt(enable_sm, L"h", m_nStrmMgmtLocalHCount);
proto->m_ThreadInfo->send_no_strm_mgmt(enable_sm);
}
|
