133 lines
3.1 KiB
C++
133 lines
3.1 KiB
C++
/* pwdgrp.h
|
|
|
|
Copyright 2001, 2002, 2003 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 *, cygsid * = NULL);
|
|
|
|
enum pwdgrp_state {
|
|
uninitialized = 0,
|
|
initializing,
|
|
loaded
|
|
};
|
|
|
|
#define MAX_ETC_FILES 2
|
|
class etc
|
|
{
|
|
static int curr_ix;
|
|
static bool sawchange[MAX_ETC_FILES];
|
|
static const char *fn[MAX_ETC_FILES];
|
|
static FILETIME last_modified[MAX_ETC_FILES];
|
|
static bool dir_changed (int);
|
|
static int init (int, const char *);
|
|
static bool file_changed (int);
|
|
static void set_last_modified (int, FILETIME&);
|
|
friend class pwdgrp;
|
|
};
|
|
|
|
class pwdgrp
|
|
{
|
|
pwdgrp_state state;
|
|
int pwd_ix;
|
|
path_conv pc;
|
|
char *buf;
|
|
char *lptr, *eptr;
|
|
|
|
char *gets ()
|
|
{
|
|
if (!buf)
|
|
lptr = NULL;
|
|
else if (!eptr)
|
|
lptr = NULL;
|
|
else
|
|
{
|
|
lptr = eptr;
|
|
eptr = strchr (lptr, '\n');
|
|
if (eptr)
|
|
{
|
|
if (eptr > lptr && *(eptr - 1) == '\r')
|
|
*(eptr - 1) = 0;
|
|
*eptr++ = '\0';
|
|
}
|
|
}
|
|
return lptr;
|
|
}
|
|
|
|
public:
|
|
bool isinitializing ()
|
|
{
|
|
if (state <= initializing)
|
|
state = initializing;
|
|
else if (etc::file_changed (pwd_ix - 1))
|
|
state = initializing;
|
|
return state == initializing;
|
|
}
|
|
void operator = (pwdgrp_state nstate) { state = nstate; }
|
|
bool isuninitialized () const { return state == uninitialized; }
|
|
|
|
bool load (const char *posix_fname, void (* add_line) (char *))
|
|
{
|
|
if (buf)
|
|
free (buf);
|
|
buf = lptr = eptr = NULL;
|
|
|
|
pc.check (posix_fname);
|
|
pwd_ix = etc::init (pwd_ix - 1, pc) + 1;
|
|
|
|
paranoid_printf ("%s", posix_fname);
|
|
|
|
bool res;
|
|
if (pc.error || !pc.exists () || !pc.isdisk () || pc.isdir ())
|
|
res = false;
|
|
else
|
|
{
|
|
HANDLE fh = CreateFile (pc, GENERIC_READ, wincap.shared (), NULL,
|
|
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
|
|
if (fh == INVALID_HANDLE_VALUE)
|
|
res = false;
|
|
else
|
|
{
|
|
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;
|
|
fh = NULL;
|
|
return false;
|
|
}
|
|
buf[read_bytes] = '\0';
|
|
eptr = buf;
|
|
CloseHandle (fh);
|
|
FILETIME ft;
|
|
if (GetFileTime (fh, NULL, NULL, &ft))
|
|
etc::set_last_modified (pwd_ix - 1, ft);
|
|
char *line;
|
|
while ((line = gets()) != NULL)
|
|
add_line (line);
|
|
res = true;
|
|
}
|
|
}
|
|
|
|
state = loaded;
|
|
return res;
|
|
}
|
|
};
|