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
|
/*********************************************************************
* Copyright 1993, UCAR/Unidata
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
* Derived from poco library from Boost Software: see nccpoco/LICENSE file.
*********************************************************************/
#ifdef _WIN32
#include "config.h"
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <windows.h>
#include <errhandlingapi.h>
#include "netcdf.h"
#include "ncpoco.h"
#include "ncpathmgr.h"
#ifdef USE_MUTEX
static CRITICAL_SECTION mutex;
#endif
static const char* driveletters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
/* Forward */
static int isAbsolutePath(const char* path);
/**************************************************/
int
ncp_win32_initialize()
{
int ret = 1;
#ifdef USE_MUTEX
InitializeCriticalSectionAndSpinCount(&mutex, 4000);
#endif
(void)SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOGPFAULTERRORBOX|SEM_NOOPENFILEERRORBOX);
return ret;
}
int
ncp_win32_finalize()
{
#ifdef USE_MUTEX
DeleteCriticalSection(&mutex);
#endif
return 1;
}
/**************************************************/
#ifdef USE_MUTEX
static void lock(void) {EnterCriticalSection(&mutex);}
#else
#define lock()
#endif
#ifdef USE_MUTEX
static void unlock(void) {LeaveCriticalSection(&mutex);}
#else
#define unlock()
#endif
/**************************************************/
static int
init(NCPSharedLib* lib)
{
int ret = NC_NOERR;
return ret;
}
static int
reclaim(NCPSharedLib* lib)
{
int ret = NC_NOERR;
return ret;
}
static int
load(NCPSharedLib* lib , const char* path0, int flags)
{
int ret = NC_NOERR;
DWORD realflags = 0;
char* path = NULL;
path = NCpathcvt(path0);
if(path == NULL) {ret = NC_EINVAL; goto done;}
lock();
if(lib->state.handle != NULL)
{ret = NC_EEXIST; goto ldone;}
lib->path = nulldup(path);
lib->flags = flags;
if(isAbsolutePath(path)) realflags |= LOAD_WITH_ALTERED_SEARCH_PATH;
lib->state.flags = realflags;
lib->state.handle = LoadLibraryExA(path, 0, realflags);
if(lib->state.handle == NULL) {
int errcode = GetLastError();
char* msg = NULL;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, errcode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), &msg, 0, NULL);
if(msg) {
strncpy(lib->err.msg,msg,sizeof(lib->err.msg));
} else
lib->err.msg[0] = '\0';
ret = NC_ENOTFOUND;
goto ldone;
}
ldone:
unlock();
done:
nullfree(path);
return ret;
}
static int
unload(NCPSharedLib* lib)
{
int ret = NC_NOERR;
lock();
if(lib->state.handle != NULL) {
FreeLibrary((HMODULE)lib->state.handle);
lib->state.handle = NULL;
goto done;
}
done:
unlock();
return ret;
}
static int
isLoaded(NCPSharedLib* lib)
{
return lib->state.handle != NULL;
}
static void*
getsymbol(NCPSharedLib* lib, const char* name)
{
void* result = NULL;
lock();
if(lib->state.handle != NULL) {
result = (void*)GetProcAddress((HMODULE)lib->state.handle,name);
}
unlock();
return result;
}
static const char*
getpath(NCPSharedLib* lib)
{
return lib->path;
}
static int
isAbsolutePath(const char* path)
{
if(path == NULL || path[0] == '\0')
return 0;
if(strchr(driveletters,path[0]) != NULL
&& path[1] == ':'
&& (path[2] == '/' || path[2] == '\\'))
return 1;
if(path[0] == '/' || path[2] == '\\')
return 1;
return 0;
}
struct NCPAPI ncp_win32_api = {
init,
reclaim,
load,
unload,
isLoaded,
getsymbol,
getpath,
};
#endif /*_WIN32*/
|
