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
|
/* pwdgrp.h
Copyright 2001 Red Hat inc.
Stuff common to pwd and grp handling.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
/* These functions are needed to allow searching and walking through
the passwd and group lists */
extern struct passwd *internal_getpwsid (cygsid &);
extern struct passwd *internal_getpwnam (const char *, BOOL = FALSE);
extern struct passwd *internal_getpwuid (__uid32_t, BOOL = FALSE);
extern struct __group32 *internal_getgrsid (cygsid &);
extern struct __group32 *internal_getgrgid (__gid32_t gid, BOOL = FALSE);
extern struct __group32 *internal_getgrnam (const char *, BOOL = FALSE);
extern struct __group32 *internal_getgrent (int);
int internal_getgroups (int, __gid32_t *);
enum pwdgrp_state {
uninitialized = 0,
initializing,
loaded
};
class pwdgrp_check {
pwdgrp_state state;
FILETIME last_modified;
char file_w32[MAX_PATH];
public:
pwdgrp_check () : state (uninitialized) {}
BOOL isinitializing ()
{
if (state <= initializing)
state = initializing;
else if (cygheap->etc_changed ())
{
if (!file_w32[0])
state = initializing;
else
{
HANDLE h;
WIN32_FIND_DATA data;
if ((h = FindFirstFile (file_w32, &data)) != INVALID_HANDLE_VALUE)
{
if (CompareFileTime (&data.ftLastWriteTime, &last_modified) > 0)
state = initializing;
FindClose (h);
}
}
}
return state == initializing;
}
void operator = (pwdgrp_state nstate)
{
state = nstate;
}
BOOL isuninitialized () const { return state == uninitialized; }
void set_last_modified (HANDLE fh, const char *name)
{
if (!file_w32[0])
strcpy (file_w32, name);
GetFileTime (fh, NULL, NULL, &last_modified);
}
};
class pwdgrp_read {
path_conv pc;
HANDLE fh;
char *buf;
char *lptr, *eptr;
public:
bool open (const char *posix_fname)
{
if (buf)
free (buf);
buf = lptr = eptr = NULL;
pc.check (posix_fname);
if (pc.error || !pc.exists () || !pc.isdisk () || pc.isdir ())
return false;
fh = CreateFile (pc, GENERIC_READ, wincap.shared (), NULL, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, 0);
if (fh != INVALID_HANDLE_VALUE)
{
DWORD size = GetFileSize (fh, NULL), read_bytes;
buf = (char *) malloc (size + 1);
if (!ReadFile (fh, buf, size, &read_bytes, NULL))
{
if (buf)
free (buf);
buf = NULL;
CloseHandle (fh);
fh = NULL;
return false;
}
buf[read_bytes] = '\0';
return true;
}
return false;
}
char *gets ()
{
if (!buf)
return NULL;
if (!lptr)
lptr = buf;
else if (!eptr)
return lptr = NULL;
else
lptr = eptr;
eptr = strchr (lptr, '\n');
if (eptr)
{
if (eptr > lptr && *(eptr - 1) == '\r')
*(eptr - 1) = 0;
*eptr++ = '\0';
}
return lptr;
}
inline HANDLE get_fhandle () { return fh; }
inline const char *get_fname () { return pc; }
void close ()
{
if (fh)
CloseHandle (fh);
fh = NULL;
}
};
|
