463513f0e2
* path.cc (chdir): Guard against invalid parameter.
(fchdir): New function.
* include/cygwin/version.h: Bump API minor version to 40.
* uinfo.cc (internal_getlogin): Remove unused variable.
287 lines
8.2 KiB
C++
287 lines
8.2 KiB
C++
/* uinfo.cc: user info (uid, gid, etc...)
|
|
|
|
Copyright 1996, 1997, 1998 Cygnus Solutions.
|
|
|
|
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 <sys/cygwin.h>
|
|
#include "sync.h"
|
|
#include "sigproc.h"
|
|
#include "pinfo.h"
|
|
#include "fhandler.h"
|
|
#include "dtable.h"
|
|
#include "cygheap.h"
|
|
#include "registry.h"
|
|
#include "security.h"
|
|
|
|
struct passwd *
|
|
internal_getlogin (cygheap_user &user)
|
|
{
|
|
char username[UNLEN + 1];
|
|
DWORD username_len = UNLEN + 1;
|
|
struct passwd *pw = NULL;
|
|
|
|
if (!GetUserName (username, &username_len))
|
|
user.set_name ("unknown");
|
|
else
|
|
user.set_name (username);
|
|
debug_printf ("GetUserName() = %s", user.name ());
|
|
|
|
if (os_being_run == winNT)
|
|
{
|
|
LPWKSTA_USER_INFO_1 wui;
|
|
NET_API_STATUS ret;
|
|
char buf[512];
|
|
char *env;
|
|
|
|
user.set_logsrv (NULL);
|
|
/* First trying to get logon info from environment */
|
|
if ((env = getenv ("USERNAME")) != NULL)
|
|
user.set_name (env);
|
|
if ((env = getenv ("USERDOMAIN")) != NULL)
|
|
user.set_domain (env);
|
|
if ((env = getenv ("LOGONSERVER")) != NULL)
|
|
user.set_logsrv (env + 2); /* filter leading double backslashes */
|
|
if (user.name () && user.domain ())
|
|
debug_printf ("User: %s, Domain: %s, Logon Server: %s",
|
|
user.name (), user.domain (), user.logsrv ());
|
|
else if (!(ret = NetWkstaUserGetInfo (NULL, 1, (LPBYTE *)&wui)))
|
|
{
|
|
sys_wcstombs (buf, wui->wkui1_username, UNLEN + 1);
|
|
user.set_name (buf);
|
|
sys_wcstombs (buf, wui->wkui1_logon_server,
|
|
INTERNET_MAX_HOST_NAME_LENGTH + 1);
|
|
user.set_logsrv (buf);
|
|
sys_wcstombs (buf, wui->wkui1_logon_domain,
|
|
INTERNET_MAX_HOST_NAME_LENGTH + 1);
|
|
user.set_domain (buf);
|
|
NetApiBufferFree (wui);
|
|
}
|
|
if (!user.logsrv () && get_logon_server_and_user_domain (buf, NULL))
|
|
{
|
|
user.set_logsrv (buf + 2);
|
|
setenv ("LOGONSERVER", buf, 1);
|
|
}
|
|
LPUSER_INFO_3 ui = NULL;
|
|
WCHAR wuser[UNLEN + 1];
|
|
WCHAR wlogsrv[INTERNET_MAX_HOST_NAME_LENGTH + 3];
|
|
|
|
/* HOMEDRIVE and HOMEPATH are wrong most of the time, too,
|
|
after changing user context! */
|
|
sys_mbstowcs (wuser, user.name (), UNLEN + 1);
|
|
strcat (strcpy (buf, "\\\\"), user.logsrv ());
|
|
sys_mbstowcs (wlogsrv, buf, INTERNET_MAX_HOST_NAME_LENGTH + 3);
|
|
if (!NetUserGetInfo (NULL, wuser, 3, (LPBYTE *)&ui)
|
|
|| !NetUserGetInfo (wlogsrv, wuser, 3,(LPBYTE *)&ui))
|
|
{
|
|
sys_wcstombs (buf, ui->usri3_home_dir, MAX_PATH);
|
|
if (!buf[0])
|
|
{
|
|
sys_wcstombs (buf, ui->usri3_home_dir_drive, MAX_PATH);
|
|
if (buf[0])
|
|
strcat (buf, "\\");
|
|
else
|
|
{
|
|
env = getenv ("SYSTEMDRIVE");
|
|
if (env && *env)
|
|
strcat (strcpy (buf, env), "\\");
|
|
else
|
|
GetSystemDirectoryA (buf, MAX_PATH);
|
|
}
|
|
}
|
|
setenv ("HOMEPATH", buf + 2, 1);
|
|
buf[2] = '\0';
|
|
setenv ("HOMEDRIVE", buf, 1);
|
|
NetApiBufferFree (ui);
|
|
}
|
|
debug_printf ("Domain: %s, Logon Server: %s, Windows Username: %s",
|
|
user.domain (), user.logsrv (), user.name ());
|
|
|
|
if (allow_ntsec)
|
|
{
|
|
HANDLE ptok = user.token; /* Which is INVALID_HANDLE_VALUE if no
|
|
impersonation took place. */
|
|
DWORD siz;
|
|
cygsid tu;
|
|
int ret = 0;
|
|
|
|
/* Try to get the SID either from already impersonated token
|
|
or from current process first. To differ that two cases is
|
|
important, because you can't rely on the user information
|
|
in a process token of a currently impersonated process. */
|
|
if (ptok == INVALID_HANDLE_VALUE
|
|
&& !OpenProcessToken (GetCurrentProcess (),
|
|
TOKEN_ADJUST_DEFAULT | TOKEN_QUERY,
|
|
&ptok))
|
|
debug_printf ("OpenProcessToken(): %E\n");
|
|
else if (!GetTokenInformation (ptok, TokenUser, &tu, sizeof tu, &siz))
|
|
debug_printf ("GetTokenInformation(): %E");
|
|
else if (!(ret = user.set_sid (tu)))
|
|
debug_printf ("Couldn't retrieve SID from access token!");
|
|
/* If that failes, try to get the SID from localhost. This can only
|
|
be done if a domain is given because there's a chance that a local
|
|
and a domain user may have the same name. */
|
|
if (!ret && user.domain ())
|
|
{
|
|
/* Concat DOMAIN\USERNAME for the next lookup */
|
|
strcat (strcat (strcpy (buf, user.domain ()), "\\"), user.name ());
|
|
if (!(ret = lookup_name (buf, NULL, user.sid ())))
|
|
debug_printf ("Couldn't retrieve SID locally!");
|
|
}
|
|
|
|
/* If that fails, too, as a last resort try to get the SID from
|
|
the logon server. */
|
|
if (!ret && !(ret = lookup_name (user.name (), user.logsrv (),
|
|
user.sid ())))
|
|
debug_printf ("Couldn't retrieve SID from '%s'!", user.logsrv ());
|
|
|
|
/* If we have a SID, try to get the corresponding Cygwin user name
|
|
which can be different from the Windows user name. */
|
|
cygsid gsid (NO_SID);
|
|
if (ret)
|
|
{
|
|
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 group *gr = getgrgid (pw->pw_gid);
|
|
if (gr)
|
|
if (!gsid.getfromgr (gr))
|
|
gsid = NO_SID;
|
|
break;
|
|
}
|
|
if (!strcasematch (user.name (), "SYSTEM")
|
|
&& user.domain () && user.logsrv ())
|
|
{
|
|
if (get_registry_hive_path (user.sid (), buf))
|
|
setenv ("USERPROFILE", buf, 1);
|
|
else
|
|
unsetenv ("USERPROFILE");
|
|
}
|
|
}
|
|
|
|
/* If this process is started from a non Cygwin process,
|
|
set token owner to the same value as token user and
|
|
primary group to the group which is set as primary group
|
|
in /etc/passwd. */
|
|
if (ptok != INVALID_HANDLE_VALUE && myself->ppid == 1)
|
|
{
|
|
if (!SetTokenInformation (ptok, TokenOwner, &tu, sizeof tu))
|
|
debug_printf ("SetTokenInformation(TokenOwner): %E");
|
|
if (gsid && !SetTokenInformation (ptok, TokenPrimaryGroup,
|
|
&gsid, sizeof gsid))
|
|
debug_printf ("SetTokenInformation(TokenPrimaryGroup): %E");
|
|
}
|
|
|
|
/* Close token only if it's a result from OpenProcessToken(). */
|
|
if (ptok != INVALID_HANDLE_VALUE
|
|
&& user.token == INVALID_HANDLE_VALUE)
|
|
CloseHandle (ptok);
|
|
}
|
|
}
|
|
debug_printf ("Cygwins Username: %s", user.name ());
|
|
return pw ?: getpwnam(user.name ());
|
|
}
|
|
|
|
void
|
|
uinfo_init ()
|
|
{
|
|
struct passwd *p;
|
|
|
|
/* Initialize to non impersonated values.
|
|
Setting `impersonated' to TRUE seems to be wrong but it
|
|
isn't. Impersonated is thought as "Current User and `token'
|
|
are coincident". See seteuid() for the mechanism behind that. */
|
|
if (cygheap->user.token != INVALID_HANDLE_VALUE)
|
|
CloseHandle (cygheap->user.token);
|
|
cygheap->user.token = INVALID_HANDLE_VALUE;
|
|
cygheap->user.impersonated = TRUE;
|
|
|
|
/* If uid is USHRT_MAX, the process is started from a non cygwin
|
|
process or the user context was changed in spawn.cc */
|
|
if (myself->uid == USHRT_MAX)
|
|
if ((p = internal_getlogin (cygheap->user)) != NULL)
|
|
{
|
|
myself->uid = p->pw_uid;
|
|
/* Set primary group only if ntsec is off or the process has been
|
|
started from a non cygwin process. */
|
|
if (!allow_ntsec || myself->ppid == 1)
|
|
myself->gid = p->pw_gid;
|
|
}
|
|
else
|
|
{
|
|
myself->uid = DEFAULT_UID;
|
|
myself->gid = DEFAULT_GID;
|
|
}
|
|
/* Real and effective uid/gid are always identical on process start up.
|
|
This is at least true for NT/W2K. */
|
|
cygheap->user.orig_uid = cygheap->user.real_uid = myself->uid;
|
|
cygheap->user.orig_gid = cygheap->user.real_gid = myself->gid;
|
|
}
|
|
|
|
extern "C" char *
|
|
getlogin (void)
|
|
{
|
|
#ifdef _MT_SAFE
|
|
char *this_username=_reent_winsup ()->_username;
|
|
#else
|
|
static NO_COPY char this_username[UNLEN + 1];
|
|
#endif
|
|
|
|
return strcpy (this_username, cygheap->user.name ());
|
|
}
|
|
|
|
extern "C" uid_t
|
|
getuid (void)
|
|
{
|
|
return cygheap->user.real_uid;
|
|
}
|
|
|
|
extern "C" gid_t
|
|
getgid (void)
|
|
{
|
|
return cygheap->user.real_gid;
|
|
}
|
|
|
|
extern "C" uid_t
|
|
geteuid (void)
|
|
{
|
|
return myself->uid;
|
|
}
|
|
|
|
extern "C" gid_t
|
|
getegid (void)
|
|
{
|
|
return myself->gid;
|
|
}
|
|
|
|
/* Not quite right - cuserid can change, getlogin can't */
|
|
extern "C" char *
|
|
cuserid (char *src)
|
|
{
|
|
if (src)
|
|
{
|
|
strcpy (src, getlogin ());
|
|
return src;
|
|
}
|
|
else
|
|
{
|
|
return getlogin ();
|
|
}
|
|
}
|