newlib-cygwin/winsup/cygwin/uinfo.cc

402 lines
9.3 KiB
C++

/* uinfo.cc: user info (uid, gid, etc...)
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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. */
#include "winsup.h"
#include <pwd.h>
#include <unistd.h>
#include <winnls.h>
#include <wininet.h>
#include <utmp.h>
#include <limits.h>
#include <stdlib.h>
#include <lm.h>
#include <errno.h>
#include <sys/cygwin.h>
#include "pinfo.h"
#include "security.h"
#include "fhandler.h"
#include "path.h"
#include "dtable.h"
#include "cygerrno.h"
#include "cygheap.h"
#include "registry.h"
#include "child_info.h"
#include "environ.h"
void
internal_getlogin (cygheap_user &user)
{
struct passwd *pw = NULL;
if (wincap.has_security ())
{
HANDLE ptok = INVALID_HANDLE_VALUE;
DWORD siz;
cygsid tu;
DWORD ret = 0;
/* Try to get the SID either from current process and
store it in user.psid */
if (!OpenProcessToken (hMainProc, TOKEN_ADJUST_DEFAULT | TOKEN_QUERY,
&ptok))
system_printf ("OpenProcessToken(): %E\n");
else if (!GetTokenInformation (ptok, TokenUser, &tu, sizeof tu, &siz))
system_printf ("GetTokenInformation (TokenUser): %E");
else if (!(ret = user.set_sid (tu)))
system_printf ("Couldn't retrieve SID from access token!");
else if (!GetTokenInformation (ptok, TokenPrimaryGroup,
&user.groups.pgsid, sizeof tu, &siz))
system_printf ("GetTokenInformation (TokenPrimaryGroup): %E");
/* We must set the user name, uid and gid.
If we have a SID, try to get the corresponding Cygwin
password entry. Set user name which can be different
from the Windows user name */
if (ret)
{
cygsid gsid (NO_SID);
cygsid psid;
for (int pidx = 0; (pw = internal_getpwent (pidx)); ++pidx)
if (psid.getfrompw (pw) && EqualSid (user.sid (), psid))
{
user.set_name (pw->pw_name);
struct __group32 *gr = getgrgid32 (pw->pw_gid);
if (gr)
if (!gsid.getfromgr (gr))
gsid = NO_SID;
break;
}
/* Set token owner to the same value as token user and
primary group to the group in /etc/passwd. */
if (!SetTokenInformation (ptok, TokenOwner, &tu, sizeof tu))
debug_printf ("SetTokenInformation(TokenOwner): %E");
if (gsid)
{
user.groups.pgsid = gsid;
if (!SetTokenInformation (ptok, TokenPrimaryGroup,
&gsid, sizeof gsid))
debug_printf ("SetTokenInformation(TokenPrimaryGroup): %E");
}
}
if (ptok != INVALID_HANDLE_VALUE)
CloseHandle (ptok);
}
if (!pw)
pw = getpwnam (user.name ());
if (pw)
{
myself->uid = pw->pw_uid;
myself->gid = pw->pw_gid;
}
else
{
myself->uid = DEFAULT_UID;
myself->gid = DEFAULT_GID;
}
(void) cygheap->user.ontherange (CH_HOME, pw);
return;
}
void
uinfo_init ()
{
if (!child_proc_info)
internal_getlogin (cygheap->user); /* Set the cygheap->user. */
/* Real and effective uid/gid are identical on process start up. */
cygheap->user.orig_uid = cygheap->user.real_uid = myself->uid;
cygheap->user.orig_gid = cygheap->user.real_gid = myself->gid;
cygheap->user.set_orig_sid (); /* Update the original sid */
cygheap->user.token = INVALID_HANDLE_VALUE; /* No token present */
}
extern "C" char *
getlogin (void)
{
#ifdef _MT_SAFE
char *this_username=_reent_winsup ()->_username;
#else
static char this_username[UNLEN + 1] NO_COPY;
#endif
return strcpy (this_username, cygheap->user.name ());
}
extern "C" __uid32_t
getuid32 (void)
{
return cygheap->user.real_uid;
}
extern "C" __uid16_t
getuid (void)
{
return cygheap->user.real_uid;
}
extern "C" __gid32_t
getgid32 (void)
{
return cygheap->user.real_gid;
}
extern "C" __gid16_t
getgid (void)
{
return cygheap->user.real_gid;
}
extern "C" __uid32_t
geteuid32 (void)
{
return myself->uid;
}
extern "C" __uid16_t
geteuid (void)
{
return myself->uid;
}
extern "C" __gid32_t
getegid32 (void)
{
return myself->gid;
}
extern "C" __gid16_t
getegid (void)
{
return myself->gid;
}
/* Not quite right - cuserid can change, getlogin can't */
extern "C" char *
cuserid (char *src)
{
if (!src)
return getlogin ();
strcpy (src, getlogin ());
return src;
}
const char *
cygheap_user::ontherange (homebodies what, struct passwd *pw)
{
LPUSER_INFO_3 ui = NULL;
WCHAR wuser[UNLEN + 1];
NET_API_STATUS ret;
char homepath_env_buf[MAX_PATH + 1];
char homedrive_env_buf[3];
char *newhomedrive = NULL;
char *newhomepath = NULL;
debug_printf ("what %d, pw %p", what, pw);
if (what == CH_HOME)
{
char *p;
if (homedrive)
newhomedrive = homedrive;
else if ((p = getenv ("HOMEDRIVE")))
newhomedrive = p;
if (homepath)
newhomepath = homepath;
else if ((p = getenv ("HOMEPATH")))
newhomepath = p;
if ((p = getenv ("HOME")))
debug_printf ("HOME is already in the environment %s", p);
else
{
if (!pw)
pw = getpwnam (name ());
if (pw && pw->pw_dir && *pw->pw_dir)
{
debug_printf ("Set HOME (from /etc/passwd) to %s", pw->pw_dir);
setenv ("HOME", pw->pw_dir, 1);
}
else if (!newhomedrive || !newhomepath)
setenv ("HOME", "/", 1);
else
{
char home[MAX_PATH];
char buf[MAX_PATH + 1];
strcpy (buf, newhomedrive);
strcat (buf, newhomepath);
cygwin_conv_to_full_posix_path (buf, home);
debug_printf ("Set HOME (from HOMEDRIVE/HOMEPATH) to %s", home);
setenv ("HOME", home, 1);
}
}
}
if (what != CH_HOME && homepath == NULL && newhomepath == NULL)
{
if (!pw)
pw = getpwnam (name ());
if (pw && pw->pw_dir && *pw->pw_dir)
cygwin_conv_to_full_win32_path (pw->pw_dir, homepath_env_buf);
else
{
homepath_env_buf[0] = homepath_env_buf[1] = '\0';
if (logsrv ())
{
WCHAR wlogsrv[INTERNET_MAX_HOST_NAME_LENGTH + 3];
sys_mbstowcs (wlogsrv, logsrv (),
sizeof (wlogsrv) / sizeof (*wlogsrv));
sys_mbstowcs (wuser, winname (), sizeof (wuser) / sizeof (*wuser));
if (!(ret = NetUserGetInfo (wlogsrv, wuser, 3,(LPBYTE *)&ui)))
{
sys_wcstombs (homepath_env_buf, ui->usri3_home_dir, MAX_PATH);
if (!homepath_env_buf[0])
{
sys_wcstombs (homepath_env_buf, ui->usri3_home_dir_drive,
MAX_PATH);
if (homepath_env_buf[0])
strcat (homepath_env_buf, "\\");
else
cygwin_conv_to_full_win32_path ("/", homepath_env_buf);
}
}
}
if (ui)
NetApiBufferFree (ui);
}
if (homepath_env_buf[1] != ':')
{
newhomedrive = almost_null;
newhomepath = homepath_env_buf;
}
else
{
homedrive_env_buf[0] = homepath_env_buf[0];
homedrive_env_buf[1] = homepath_env_buf[1];
homedrive_env_buf[2] = '\0';
newhomedrive = homedrive_env_buf;
newhomepath = homepath_env_buf + 2;
}
}
if (newhomedrive && newhomedrive != homedrive)
cfree_and_set (homedrive, (newhomedrive == almost_null)
? almost_null : cstrdup (newhomedrive));
if (newhomepath && newhomepath != homepath)
cfree_and_set (homepath, cstrdup (newhomepath));
switch (what)
{
case CH_HOMEDRIVE:
return homedrive;
case CH_HOMEPATH:
return homepath;
default:
return homepath;
}
}
const char *
cygheap_user::test_uid (char *&what, const char *name, size_t namelen)
{
if (!what && !issetuid ())
what = getwinenveq (name, namelen, HEAP_STR);
return what;
}
const char *
cygheap_user::env_logsrv (const char *name, size_t namelen)
{
if (test_uid (plogsrv, name, namelen))
return plogsrv;
const char *mydomain = domain ();
const char *myname = winname ();
if (!mydomain || strcasematch (myname, "SYSTEM"))
return almost_null;
char logsrv[INTERNET_MAX_HOST_NAME_LENGTH + 3];
cfree_and_set (plogsrv, almost_null);
if (get_logon_server (mydomain, logsrv, NULL))
plogsrv = cstrdup (logsrv);
return plogsrv;
}
const char *
cygheap_user::env_domain (const char *name, size_t namelen)
{
if (pwinname && test_uid (pdomain, name, namelen))
return pdomain;
char username[UNLEN + 1];
DWORD ulen = sizeof (username);
char userdomain[DNLEN + 1];
DWORD dlen = sizeof (userdomain);
SID_NAME_USE use;
cfree_and_set (pwinname, almost_null);
cfree_and_set (pdomain, almost_null);
if (!LookupAccountSid (NULL, sid (), username, &ulen,
userdomain, &dlen, &use))
__seterrno ();
else
{
pwinname = cstrdup (username);
pdomain = cstrdup (userdomain);
}
return pdomain;
}
const char *
cygheap_user::env_userprofile (const char *name, size_t namelen)
{
if (test_uid (puserprof, name, namelen))
return puserprof;
char userprofile_env_buf[MAX_PATH + 1];
cfree_and_set (puserprof, almost_null);
/* FIXME: Should this just be setting a puserprofile like everything else? */
const char *myname = winname ();
if (myname && strcasematch (myname, "SYSTEM")
&& get_registry_hive_path (sid (), userprofile_env_buf))
puserprof = cstrdup (userprofile_env_buf);
return puserprof;
}
const char *
cygheap_user::env_homepath (const char *name, size_t namelen)
{
return ontherange (CH_HOMEPATH);
}
const char *
cygheap_user::env_homedrive (const char *name, size_t namelen)
{
return ontherange (CH_HOMEDRIVE);
}
const char *
cygheap_user::env_name (const char *name, size_t namelen)
{
if (!test_uid (pwinname, name, namelen))
(void) domain ();
return pwinname;
}