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
|
/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "JavaUtils.h"
#include "pathutils.h"
#include <QStringList>
#include <QString>
#include <QDir>
#include <logger/QsLog.h>
JavaUtils::JavaUtils()
{
}
std::vector<java_install> JavaUtils::GetDefaultJava()
{
std::vector<java_install> javas;
javas.push_back(std::make_tuple("java", "unknown", "java", false));
return javas;
}
#if WINDOWS
std::vector<java_install> JavaUtils::FindJavaFromRegistryKey(DWORD keyType, QString keyName)
{
std::vector<java_install> javas;
QString archType = "unknown";
if(keyType == KEY_WOW64_64KEY) archType = "64";
else if(keyType == KEY_WOW64_32KEY) archType = "32";
HKEY jreKey;
if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, keyName.toStdString().c_str(), 0, KEY_READ | keyType | KEY_ENUMERATE_SUB_KEYS, &jreKey) == ERROR_SUCCESS)
{
// Read the current type version from the registry.
// This will be used to find any key that contains the JavaHome value.
char *value = new char[0];
DWORD valueSz = 0;
if (RegQueryValueExA(jreKey, "CurrentVersion", NULL, NULL, (BYTE*)value, &valueSz) == ERROR_MORE_DATA)
{
value = new char[valueSz];
RegQueryValueExA(jreKey, "CurrentVersion", NULL, NULL, (BYTE*)value, &valueSz);
}
QString recommended = value;
TCHAR subKeyName[255];
DWORD subKeyNameSize, numSubKeys, retCode;
// Get the number of subkeys
RegQueryInfoKey(jreKey, NULL, NULL, NULL, &numSubKeys, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
// Iterate until RegEnumKeyEx fails
if(numSubKeys > 0)
{
for(int i = 0; i < numSubKeys; i++)
{
subKeyNameSize = 255;
retCode = RegEnumKeyEx(jreKey, i, subKeyName, &subKeyNameSize, NULL, NULL, NULL, NULL);
if(retCode == ERROR_SUCCESS)
{
// Now open the registry key for the version that we just got.
QString newKeyName = keyName + "\\" + subKeyName;
HKEY newKey;
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, newKeyName.toStdString().c_str(), 0, KEY_READ | KEY_WOW64_64KEY, &newKey) == ERROR_SUCCESS)
{
// Read the JavaHome value to find where Java is installed.
value = new char[0];
valueSz = 0;
if (RegQueryValueEx(newKey, "JavaHome", NULL, NULL, (BYTE*)value, &valueSz) == ERROR_MORE_DATA)
{
value = new char[valueSz];
RegQueryValueEx(newKey, "JavaHome", NULL, NULL, (BYTE*)value, &valueSz);
javas.push_back(std::make_tuple(subKeyName, archType, QDir(PathCombine(value, "bin")).absoluteFilePath("java.exe"), (recommended == subKeyName)));
}
RegCloseKey(newKey);
}
}
}
}
RegCloseKey(jreKey);
}
return javas;
}
std::vector<java_install> JavaUtils::FindJavaPaths()
{
std::vector<java_install> JRE64s = this->FindJavaFromRegistryKey(KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
std::vector<java_install> JDK64s = this->FindJavaFromRegistryKey(KEY_WOW64_64KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
std::vector<java_install> JRE32s = this->FindJavaFromRegistryKey(KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Runtime Environment");
std::vector<java_install> JDK32s = this->FindJavaFromRegistryKey(KEY_WOW64_32KEY, "SOFTWARE\\JavaSoft\\Java Development Kit");
std::vector<java_install> javas;
javas.insert(javas.end(), JRE64s.begin(), JRE64s.end());
javas.insert(javas.end(), JDK64s.begin(), JDK64s.end());
javas.insert(javas.end(), JRE32s.begin(), JRE32s.end());
javas.insert(javas.end(), JDK32s.begin(), JDK32s.end());
if(javas.size() <= 0)
{
QLOG_WARN() << "Failed to find Java in the Windows registry - defaulting to \"java\"";
return this->GetDefaultJava();
}
QLOG_INFO() << "Found the following Java installations (64 -> 32, JRE -> JDK): ";
for(auto &java : javas)
{
QString sRec;
if(std::get<JI_REC>(java)) sRec = "(Recommended)";
QLOG_INFO() << std::get<JI_ID>(java) << std::get<JI_ARCH>(java) << " at " << std::get<JI_PATH>(java) << sRec;
}
return javas;
}
#elif OSX
std::vector<java_install> JavaUtils::FindJavaPaths()
{
QLOG_INFO() << "OS X Java detection incomplete - defaulting to \"java\"";
return this->GetDefaultJava();
}
#elif LINUX
std::vector<java_install> JavaUtils::FindJavaPaths()
{
QLOG_INFO() << "Linux Java detection incomplete - defaulting to \"java\"";
return this->GetDefaultJava();
}
#else
std::vector<java_install> JavaUtils::FindJavaPaths()
{
QLOG_INFO() << "Unknown operating system build - defaulting to \"java\"";
return this->GetDefaultJava();
}
#endif
|
