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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#include "system.h"
#include "file_url.hxx"
#include "path_helper.hxx"
#include <osl/module.h>
#include <osl/diagnose.h>
#include <osl/thread.h>
#include <osl/file.h>
#include <rtl/ustring.hxx>
#include <sal/log.hxx>
#include <o3tl/char16_t2wchar_t.hxx>
#include <vector>
/*
under WIN32, we use the void* oslModule
as a WIN32 HANDLE (which is also a 32-bit value)
*/
oslModule SAL_CALL osl_loadModule(rtl_uString *strModuleName, sal_Int32 /*nRtldMode*/ )
{
HMODULE h;
#if OSL_DEBUG_LEVEL < 2
UINT errorMode = SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS);
#endif
rtl_uString* Module = nullptr;
oslModule ret = nullptr;
oslFileError nError;
SAL_INFO( "sal.osl", "osl_loadModule: " << OUString(strModuleName) );
OSL_ASSERT(strModuleName);
nError = osl_getSystemPathFromFileURL(strModuleName, &Module);
if ( osl_File_E_None != nError )
rtl_uString_assign(&Module, strModuleName);
h = LoadLibraryW(o3tl::toW(Module->buffer));
if (h == nullptr)
h = LoadLibraryExW(o3tl::toW(Module->buffer), nullptr, LOAD_WITH_ALTERED_SEARCH_PATH);
// In case of long path names (\\?\c:\...) try to shorten the filename.
// LoadLibrary cannot handle file names which exceed 260 letters.
// In case the path is too long, the function will fail. However, the error
// code can be different. For example, it returned ERROR_FILENAME_EXCED_RANGE
// on Windows XP and ERROR_INSUFFICIENT_BUFFER on Windows 7 (64bit)
if (h == nullptr && Module->length > 260)
{
std::vector<WCHAR> vec(Module->length + 1);
DWORD len = GetShortPathNameW(o3tl::toW(Module->buffer), vec.data(), Module->length + 1);
if (len )
{
h = LoadLibraryW(vec.data());
if (h == nullptr)
h = LoadLibraryExW(vec.data(), nullptr, LOAD_WITH_ALTERED_SEARCH_PATH);
}
}
ret = static_cast<oslModule>(h);
rtl_uString_release(Module);
#if OSL_DEBUG_LEVEL < 2
SetErrorMode(errorMode);
#endif
return ret;
}
oslModule SAL_CALL osl_loadModuleAscii(const char *pModuleName, sal_Int32 )
{
HMODULE h;
UINT errorMode = SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS);
oslModule ret = nullptr;
SAL_INFO( "sal.osl", "osl_loadModule: " << pModuleName );
OSL_ASSERT(pModuleName);
h = LoadLibraryA(pModuleName);
if (h == nullptr)
h = LoadLibraryExA(pModuleName, nullptr,
LOAD_WITH_ALTERED_SEARCH_PATH);
ret = static_cast<oslModule>(h);
SetErrorMode(errorMode);
return ret;
}
oslModule osl_loadModuleRelativeAscii(
oslGenericFunction baseModule, char const * relativePath, sal_Int32 mode)
{
return osl_loadModuleRelative(baseModule, OUString::createFromAscii(relativePath).pData, mode);
}
sal_Bool SAL_CALL
osl_getModuleHandle(rtl_uString *pModuleName, oslModule *pResult)
{
LPCWSTR pName = pModuleName ? o3tl::toW(pModuleName->buffer) : nullptr;
HMODULE h = GetModuleHandleW(pName);
if( h )
{
*pResult = static_cast<oslModule>(h);
return true;
}
return false;
}
void SAL_CALL osl_unloadModule(oslModule Module)
{
FreeLibrary(static_cast<HMODULE>(Module));
}
void* SAL_CALL osl_getSymbol(oslModule Module, rtl_uString *strSymbolName)
{
/* casting from a function pointer to a data pointer is invalid
be in this case unavoidable because the API has to stay
compatible. We need to keep this function which returns a
void* by definition */
return reinterpret_cast<void*>(osl_getFunctionSymbol(Module, strSymbolName));
}
oslGenericFunction SAL_CALL osl_getFunctionSymbol( oslModule Module, rtl_uString *strSymbolName )
{
rtl_String *symbolName = nullptr;
oslGenericFunction address;
OSL_ASSERT(Module);
OSL_ASSERT(strSymbolName);
rtl_uString2String(
&symbolName,
strSymbolName->buffer,
strSymbolName->length,
RTL_TEXTENCODING_UTF8,
OUSTRING_TO_OSTRING_CVTFLAGS
);
address=osl_getAsciiFunctionSymbol(Module, rtl_string_getStr(symbolName));
rtl_string_release(symbolName);
return address;
}
oslGenericFunction SAL_CALL
osl_getAsciiFunctionSymbol( oslModule Module, const char *pSymbol )
{
oslGenericFunction fncAddr = nullptr;
if( pSymbol )
fncAddr=reinterpret_cast<oslGenericFunction>(GetProcAddress(static_cast<HMODULE>(Module), pSymbol));
return fncAddr;
}
sal_Bool SAL_CALL osl_getModuleURLFromAddress( void *pv, rtl_uString **pustrURL )
{
HMODULE hModule{};
GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
| GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
static_cast<LPCWSTR>(pv), &hModule);
if (!hModule)
return false;
::osl::LongPathBuffer<sal_Unicode> aBuffer(MAX_LONG_PATH);
DWORD nch = GetModuleFileNameW(hModule, o3tl::toW(aBuffer), aBuffer.getBufSizeInSymbols());
OUString ustrSysPath(aBuffer, nch);
return osl_getFileURLFromSystemPath(ustrSysPath.pData, pustrURL) == osl_File_E_None;
}
sal_Bool SAL_CALL osl_getModuleURLFromFunctionAddress( oslGenericFunction addr, rtl_uString ** ppLibraryUrl )
{
/* casting a function pointer to a data pointer (void*) is
not allowed according to the C/C++ standards. In this case
it is unavoidable because we have to stay compatible we
cannot remove any function. */
return osl_getModuleURLFromAddress(reinterpret_cast<void*>(addr), ppLibraryUrl);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
