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authorcvs2svn <>2004-05-04 00:18:00 +0400
committercvs2svn <>2004-05-04 00:18:00 +0400
commit7198e96ef84366ba3bf74d3b2fa9e57ad922c7e9 (patch)
tree779d1965f54f1b4124e2f9f8ed442c062a09b2cd /winsup/cygwin/security.cc
parent1af84bb7f58c0aecfc1b5c6b6685e14afe36785e (diff)
This commit was manufactured by cvs2svn to create tag 'csl-arm-2004-q1a'.csl-arm-2004-q1a
Sprout from master 2004-05-03 20:17:59 UTC Jeff Johnston <jjohnstn@redhat.com> '' Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson <rth@redhat.com> '19990502 sourceware import': COPYING COPYING.LIB README config/mh-armpic config/mh-elfalphapic config/mh-m68kpic config/mh-papic config/mh-ppcpic config/mh-x86pic config/mt-d30v config/mt-netware config/mt-ospace etc/add-log.el etc/add-log.vi etc/configbuild.ein etc/configbuild.fig etc/configbuild.jin etc/configbuild.tin etc/configdev.ein etc/configdev.fig etc/configdev.jin etc/configdev.tin etc/configure etc/configure.in include/aout/hp.h include/aout/hppa.h include/coff/sym.h include/coff/symconst.h include/fopen-bin.h include/fopen-same.h include/fopen-vms.h include/gdbm.h include/nlm/ppc-ext.h include/opcode/mn10200.h include/opcode/tahoe.h include/opcode/tic30.h makefile.vms move-if-change setup.com ylwrap Delete: djunpack.bat winsup/CYGWIN_LICENSE winsup/ChangeLog winsup/Makefile.common winsup/Makefile.in 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winsup/w32api/include/scrnsave.h winsup/w32api/include/secext.h winsup/w32api/include/security.h winsup/w32api/include/servprov.h winsup/w32api/include/setupapi.h winsup/w32api/include/shellapi.h winsup/w32api/include/shlguid.h winsup/w32api/include/shlobj.h winsup/w32api/include/shlwapi.h winsup/w32api/include/snmp.h winsup/w32api/include/sql.h winsup/w32api/include/sqlext.h winsup/w32api/include/sqltypes.h winsup/w32api/include/sqlucode.h winsup/w32api/include/sspi.h winsup/w32api/include/subauth.h winsup/w32api/include/svcguid.h winsup/w32api/include/tlhelp32.h winsup/w32api/include/tmschema.h winsup/w32api/include/unknwn.h winsup/w32api/include/userenv.h winsup/w32api/include/uxtheme.h winsup/w32api/include/vfw.h winsup/w32api/include/w32api.h winsup/w32api/include/winable.h winsup/w32api/include/winbase.h winsup/w32api/include/winber.h winsup/w32api/include/wincon.h winsup/w32api/include/wincrypt.h winsup/w32api/include/windef.h winsup/w32api/include/windns.h winsup/w32api/include/windows.h winsup/w32api/include/windowsx.h winsup/w32api/include/winerror.h winsup/w32api/include/wingdi.h winsup/w32api/include/wininet.h winsup/w32api/include/winioctl.h winsup/w32api/include/winldap.h winsup/w32api/include/winnetwk.h winsup/w32api/include/winnls.h winsup/w32api/include/winnt.h winsup/w32api/include/winperf.h winsup/w32api/include/winreg.h winsup/w32api/include/winresrc.h winsup/w32api/include/winsnmp.h winsup/w32api/include/winsock.h winsup/w32api/include/winsock2.h winsup/w32api/include/winspool.h winsup/w32api/include/winsvc.h winsup/w32api/include/winuser.h winsup/w32api/include/winver.h winsup/w32api/include/ws2spi.h winsup/w32api/include/ws2tcpip.h winsup/w32api/include/wsahelp.h winsup/w32api/include/wsipx.h winsup/w32api/include/wsnetbs.h winsup/w32api/include/wtypes.h winsup/w32api/include/zmouse.h winsup/w32api/install-sh winsup/w32api/lib/Makefile.in winsup/w32api/lib/aclui.def winsup/w32api/lib/advapi32.def winsup/w32api/lib/avicap32.def winsup/w32api/lib/avifil32.def winsup/w32api/lib/cap.def winsup/w32api/lib/comctl32.def winsup/w32api/lib/comdlg32.def winsup/w32api/lib/crypt32.def winsup/w32api/lib/ctl3d32.def winsup/w32api/lib/ddk/Makefile.in winsup/w32api/lib/ddk/apcups.def winsup/w32api/lib/ddk/cfgmgr32.def winsup/w32api/lib/ddk/dxapi.def winsup/w32api/lib/ddk/hal.def winsup/w32api/lib/ddk/hid.def winsup/w32api/lib/ddk/hidparse.def winsup/w32api/lib/ddk/mcd.def winsup/w32api/lib/ddk/ndis.def winsup/w32api/lib/ddk/ntoskrnl.def winsup/w32api/lib/ddk/scsiport.def winsup/w32api/lib/ddk/tdi.def winsup/w32api/lib/ddk/usbcamd.def winsup/w32api/lib/ddk/usbcamd2.def winsup/w32api/lib/ddk/videoprt.def winsup/w32api/lib/ddk/win32k.def winsup/w32api/lib/dhcpcsvc.def winsup/w32api/lib/directx/Makefile.in winsup/w32api/lib/directx/d3d8.def winsup/w32api/lib/directx/d3d9.def winsup/w32api/lib/directx/d3dim.def winsup/w32api/lib/directx/d3drm.def winsup/w32api/lib/directx/d3dx8d.def winsup/w32api/lib/directx/d3dx9d.def winsup/w32api/lib/directx/d3dxof.def winsup/w32api/lib/directx/ddraw.def winsup/w32api/lib/directx/dinput.def winsup/w32api/lib/directx/dinput8.def winsup/w32api/lib/directx/dinput_joy.c winsup/w32api/lib/directx/dinput_joy2.c winsup/w32api/lib/directx/dinput_kbd.c winsup/w32api/lib/directx/dinput_mouse.c winsup/w32api/lib/directx/dinput_mouse2.c winsup/w32api/lib/directx/dinput_private.h winsup/w32api/lib/directx/dmoguids.c winsup/w32api/lib/directx/dplayx.def winsup/w32api/lib/directx/dpnaddr.def winsup/w32api/lib/directx/dpnet.def winsup/w32api/lib/directx/dpnlobby.def winsup/w32api/lib/directx/dpvoice.def winsup/w32api/lib/directx/dsetup.def winsup/w32api/lib/directx/dsound.def winsup/w32api/lib/directx/dxerr.c winsup/w32api/lib/directx/dxerr8.c winsup/w32api/lib/directx/dxerr8w.c winsup/w32api/lib/directx/dxerr9.c winsup/w32api/lib/directx/dxerr9w.c winsup/w32api/lib/directx/dxguid.c winsup/w32api/lib/directx/ksproxy.def winsup/w32api/lib/directx/ksuser.c winsup/w32api/lib/directx/ksuser.def winsup/w32api/lib/directx/msdmo.def winsup/w32api/lib/directx/quartz.def winsup/w32api/lib/directx/strmiids.c winsup/w32api/lib/directx/test.c winsup/w32api/lib/dlcapi.def winsup/w32api/lib/dnsapi.def winsup/w32api/lib/faultrep.def winsup/w32api/lib/gdi32.def winsup/w32api/lib/glaux.def winsup/w32api/lib/glu32.def winsup/w32api/lib/glut.def winsup/w32api/lib/glut32.def winsup/w32api/lib/igmpagnt.def winsup/w32api/lib/imagehlp.def winsup/w32api/lib/imm32.def winsup/w32api/lib/iphlpapi.def winsup/w32api/lib/kernel32.c winsup/w32api/lib/kernel32.def winsup/w32api/lib/largeint.c winsup/w32api/lib/lz32.def winsup/w32api/lib/mapi32.def winsup/w32api/lib/mfcuia32.def winsup/w32api/lib/mgmtapi.def winsup/w32api/lib/mpr.def winsup/w32api/lib/msacm32.def winsup/w32api/lib/mshtml-uuid.c winsup/w32api/lib/msimg32.def winsup/w32api/lib/msvcp60.def winsup/w32api/lib/msvfw32.def winsup/w32api/lib/mswsock.def winsup/w32api/lib/nddeapi.def winsup/w32api/lib/netapi32.def winsup/w32api/lib/ntdll.def winsup/w32api/lib/odbc32.def winsup/w32api/lib/odbccp32.def winsup/w32api/lib/ole32.def winsup/w32api/lib/oleacc.def winsup/w32api/lib/oleaut32.def winsup/w32api/lib/olecli32.def winsup/w32api/lib/oledlg.def winsup/w32api/lib/olepro32.def winsup/w32api/lib/olesvr32.def winsup/w32api/lib/opengl32.def winsup/w32api/lib/penwin32.def winsup/w32api/lib/pkpd32.def winsup/w32api/lib/powrprof.def winsup/w32api/lib/psapi.def winsup/w32api/lib/rapi.def winsup/w32api/lib/rasapi32.def winsup/w32api/lib/rasdlg.def winsup/w32api/lib/res.rc winsup/w32api/lib/rpcdce4.def winsup/w32api/lib/rpcns4.def winsup/w32api/lib/rpcrt4.def winsup/w32api/lib/scrnsave.c winsup/w32api/lib/secur32.def winsup/w32api/lib/setupapi.def winsup/w32api/lib/shell32.c winsup/w32api/lib/shell32.def winsup/w32api/lib/shfolder.def winsup/w32api/lib/shlwapi.def winsup/w32api/lib/snmpapi.def winsup/w32api/lib/svrapi.def winsup/w32api/lib/tapi32.def winsup/w32api/lib/test.c winsup/w32api/lib/th32.def winsup/w32api/lib/thunk32.def winsup/w32api/lib/url.def winsup/w32api/lib/user32.def winsup/w32api/lib/userenv.def winsup/w32api/lib/uuid.c winsup/w32api/lib/uxtheme.def winsup/w32api/lib/vdmdbg.def winsup/w32api/lib/version.def winsup/w32api/lib/vfw32.mri winsup/w32api/lib/win32spl.def winsup/w32api/lib/wininet.def winsup/w32api/lib/winmm.def winsup/w32api/lib/winspool.def winsup/w32api/lib/winstrm.def winsup/w32api/lib/wldap32.def winsup/w32api/lib/wow32.def winsup/w32api/lib/ws2_32.def winsup/w32api/lib/wsnmp32.def winsup/w32api/lib/wsock32.def winsup/w32api/lib/wst.def
Diffstat (limited to 'winsup/cygwin/security.cc')
-rw-r--r--winsup/cygwin/security.cc1872
1 files changed, 0 insertions, 1872 deletions
diff --git a/winsup/cygwin/security.cc b/winsup/cygwin/security.cc
deleted file mode 100644
index 29dd0a056..000000000
--- a/winsup/cygwin/security.cc
+++ /dev/null
@@ -1,1872 +0,0 @@
-/* security.cc: NT security functions
-
- Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
-
- Originaly written by Gunther Ebert, gunther.ebert@ixos-leipzig.de
- Completely rewritten by Corinna Vinschen <corinna@vinschen.de>
-
-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 <grp.h>
-#include <pwd.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/acl.h>
-#include <ctype.h>
-#include <winnls.h>
-#include <wingdi.h>
-#include <winuser.h>
-#include <wininet.h>
-#include <ntsecapi.h>
-#include <subauth.h>
-#include <aclapi.h>
-#include "cygerrno.h"
-#include "security.h"
-#include "path.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "pinfo.h"
-#include "cygheap.h"
-#include <ntdef.h>
-#include "ntdll.h"
-#include "lm.h"
-#include "pwdgrp.h"
-
-bool allow_ntsec;
-/* allow_smbntsec is handled exclusively in path.cc (path_conv::check).
- It's defined here because of it's strong relationship to allow_ntsec.
- The default is TRUE to reflect the old behaviour. */
-bool allow_smbntsec;
-
-cygsid *
-cygsidlist::alloc_sids (int n)
-{
- if (n > 0)
- return (cygsid *) cmalloc (HEAP_STR, n * sizeof (cygsid));
- else
- return NULL;
-}
-
-void
-cygsidlist::free_sids ()
-{
- if (sids)
- cfree (sids);
- sids = NULL;
- count = maxcount = 0;
- type = cygsidlist_empty;
-}
-
-extern "C" void
-cygwin_set_impersonation_token (const HANDLE hToken)
-{
- debug_printf ("set_impersonation_token (%d)", hToken);
- cygheap->user.external_token = hToken;
- return;
-}
-
-void
-extract_nt_dom_user (const struct passwd *pw, char *domain, char *user)
-{
- char *d, *u, *c;
-
- domain[0] = 0;
- strlcpy (user, pw->pw_name, UNLEN + 1);
- debug_printf ("pw_gecos = %x (%s)", pw->pw_gecos, pw->pw_gecos);
-
- if ((d = strstr (pw->pw_gecos, "U-")) != NULL &&
- (d == pw->pw_gecos || d[-1] == ','))
- {
- c = strechr (d + 2, ',');
- if ((u = strechr (d + 2, '\\')) >= c)
- u = d + 1;
- else if (u - d <= INTERNET_MAX_HOST_NAME_LENGTH + 2)
- strlcpy (domain, d + 2, u - d - 1);
- if (c - u <= UNLEN + 1)
- strlcpy (user, u + 1, c - u);
- }
- if (domain[0])
- return;
-
- cygsid psid;
- DWORD ulen = UNLEN + 1;
- DWORD dlen = INTERNET_MAX_HOST_NAME_LENGTH + 1;
- SID_NAME_USE use;
- if (psid.getfrompw (pw))
- LookupAccountSid (NULL, psid, user, &ulen, domain, &dlen, &use);
-}
-
-extern "C" HANDLE
-cygwin_logon_user (const struct passwd *pw, const char *password)
-{
- if (!wincap.has_security ())
- {
- set_errno (ENOSYS);
- return INVALID_HANDLE_VALUE;
- }
- if (!pw)
- {
- set_errno (EINVAL);
- return INVALID_HANDLE_VALUE;
- }
-
- char nt_domain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- char nt_user[UNLEN + 1];
- HANDLE hToken;
-
- extract_nt_dom_user (pw, nt_domain, nt_user);
- debug_printf ("LogonUserA (%s, %s, %s, ...)", nt_user, nt_domain, password);
- if (!LogonUserA (nt_user, *nt_domain ? nt_domain : NULL, (char *) password,
- LOGON32_LOGON_INTERACTIVE,
- LOGON32_PROVIDER_DEFAULT,
- &hToken)
- || !SetHandleInformation (hToken,
- HANDLE_FLAG_INHERIT,
- HANDLE_FLAG_INHERIT))
- {
- __seterrno ();
- return INVALID_HANDLE_VALUE;
- }
- debug_printf ("%d = logon_user(%s,...)", hToken, pw->pw_name);
- return hToken;
-}
-
-static void
-str2lsa (LSA_STRING &tgt, const char *srcstr)
-{
- tgt.Length = strlen (srcstr);
- tgt.MaximumLength = tgt.Length + 1;
- tgt.Buffer = (PCHAR) srcstr;
-}
-
-static void
-str2buf2lsa (LSA_STRING &tgt, char *buf, const char *srcstr)
-{
- tgt.Length = strlen (srcstr);
- tgt.MaximumLength = tgt.Length + 1;
- tgt.Buffer = (PCHAR) buf;
- memcpy (buf, srcstr, tgt.MaximumLength);
-}
-
-void
-str2buf2uni (UNICODE_STRING &tgt, WCHAR *buf, const char *srcstr)
-{
- tgt.Length = strlen (srcstr) * sizeof (WCHAR);
- tgt.MaximumLength = tgt.Length + sizeof (WCHAR);
- tgt.Buffer = (PWCHAR) buf;
- sys_mbstowcs (buf, srcstr, tgt.MaximumLength);
-}
-
-void
-str2buf2uni_cat (UNICODE_STRING &tgt, const char *srcstr)
-{
- DWORD len = strlen (srcstr) * sizeof (WCHAR);
- sys_mbstowcs (tgt.Buffer + tgt.Length / sizeof (WCHAR), srcstr,
- len + tgt.MaximumLength);
- tgt.Length += len;
- tgt.MaximumLength += len;
-}
-
-#if 0 /* unused */
-static void
-lsa2wchar (WCHAR *tgt, LSA_UNICODE_STRING &src, int size)
-{
- size = (size - 1) * sizeof (WCHAR);
- if (src.Length < size)
- size = src.Length;
- memcpy (tgt, src.Buffer, size);
- size >>= 1;
- tgt[size] = 0;
-}
-#endif
-
-static void
-lsa2str (char *tgt, LSA_UNICODE_STRING &src, int size)
-{
- if (src.Length / 2 < size)
- size = src.Length / 2;
- sys_wcstombs (tgt, src.Buffer, size);
- tgt[size] = 0;
-}
-
-static LSA_HANDLE
-open_local_policy ()
-{
- LSA_OBJECT_ATTRIBUTES oa = { 0, 0, 0, 0, 0, 0 };
- LSA_HANDLE lsa = INVALID_HANDLE_VALUE;
-
- NTSTATUS ret = LsaOpenPolicy (NULL, &oa, POLICY_EXECUTE, &lsa);
- if (ret != STATUS_SUCCESS)
- __seterrno_from_win_error (LsaNtStatusToWinError (ret));
- return lsa;
-}
-
-static void
-close_local_policy (LSA_HANDLE &lsa)
-{
- if (lsa != INVALID_HANDLE_VALUE)
- LsaClose (lsa);
- lsa = INVALID_HANDLE_VALUE;
-}
-
-#if 0 /* unused */
-static BOOL
-get_lsa_srv_inf (LSA_HANDLE lsa, char *logonserver, char *domain)
-{
- NET_API_STATUS ret;
- WCHAR *buf;
- char name[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- WCHAR account[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- WCHAR primary[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- PPOLICY_ACCOUNT_DOMAIN_INFO adi;
- PPOLICY_PRIMARY_DOMAIN_INFO pdi;
-
- if ((ret = LsaQueryInformationPolicy (lsa, PolicyAccountDomainInformation,
- (PVOID *) &adi)) != STATUS_SUCCESS)
- {
- __seterrno_from_win_error (LsaNtStatusToWinError (ret));
- return FALSE;
- }
- lsa2wchar (account, adi->DomainName, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- LsaFreeMemory (adi);
- if ((ret = LsaQueryInformationPolicy (lsa, PolicyPrimaryDomainInformation,
- (PVOID *) &pdi)) != STATUS_SUCCESS)
- {
- __seterrno_from_win_error (LsaNtStatusToWinError (ret));
- return FALSE;
- }
- lsa2wchar (primary, pdi->Name, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- LsaFreeMemory (pdi);
- /* If the SID given in the primary domain info is NULL, the machine is
- not member of a domain. The name in the primary domain info is the
- name of the workgroup then. */
- if (pdi->Sid &&
- (ret =
- NetGetDCName (NULL, primary, (LPBYTE *) &buf)) == STATUS_SUCCESS)
- {
- sys_wcstombs (name, buf, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- strcpy (logonserver, name);
- if (domain)
- sys_wcstombs (domain, primary, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- }
- else
- {
- sys_wcstombs (name, account, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- strcpy (logonserver, "\\\\");
- strcat (logonserver, name);
- if (domain)
- sys_wcstombs (domain, account, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- }
- if (ret == STATUS_SUCCESS)
- NetApiBufferFree (buf);
- return TRUE;
-}
-#endif
-
-bool
-get_logon_server (const char *domain, char *server, WCHAR *wserver)
-{
- WCHAR wdomain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- NET_API_STATUS ret;
- WCHAR *buf;
- DWORD size = INTERNET_MAX_HOST_NAME_LENGTH + 1;
-
- /* Empty domain is interpreted as local system */
- if ((GetComputerName (server + 2, &size)) &&
- (strcasematch (domain, server + 2) || !domain[0]))
- {
- server[0] = server[1] = '\\';
- if (wserver)
- sys_mbstowcs (wserver, server, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- return true;
- }
-
- /* Try to get the primary domain controller for the domain */
- sys_mbstowcs (wdomain, domain, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- if ((ret = NetGetDCName (NULL, wdomain, (LPBYTE *) &buf)) == STATUS_SUCCESS)
- {
- sys_wcstombs (server, buf, INTERNET_MAX_HOST_NAME_LENGTH + 1);
- if (wserver)
- for (WCHAR *ptr1 = buf; (*wserver++ = *ptr1++);)
- ;
- NetApiBufferFree (buf);
- return true;
- }
- __seterrno_from_win_error (ret);
- return false;
-}
-
-static bool
-get_user_groups (WCHAR *wlogonserver, cygsidlist &grp_list, char *user,
- char *domain)
-{
- char dgroup[INTERNET_MAX_HOST_NAME_LENGTH + GNLEN + 2];
- WCHAR wuser[UNLEN + 1];
- sys_mbstowcs (wuser, user, UNLEN + 1);
- LPGROUP_USERS_INFO_0 buf;
- DWORD cnt, tot, len;
- NET_API_STATUS ret;
-
- /* Look only on logonserver */
- ret = NetUserGetGroups (wlogonserver, wuser, 0, (LPBYTE *) &buf,
- MAX_PREFERRED_LENGTH, &cnt, &tot);
- if (ret)
- {
- __seterrno_from_win_error (ret);
- /* It's no error when the user name can't be found. */
- return ret == NERR_UserNotFound;
- }
-
- len = strlen (domain);
- strcpy (dgroup, domain);
- dgroup[len++] = '\\';
-
- for (DWORD i = 0; i < cnt; ++i)
- {
- cygsid gsid;
- DWORD glen = MAX_SID_LEN;
- char domain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- DWORD dlen = sizeof (domain);
- SID_NAME_USE use = SidTypeInvalid;
-
- sys_wcstombs (dgroup + len, buf[i].grui0_name, GNLEN + 1);
- if (!LookupAccountName (NULL, dgroup, gsid, &glen, domain, &dlen, &use))
- debug_printf ("LookupAccountName(%s): %E", dgroup);
- else if (legal_sid_type (use))
- grp_list += gsid;
- else
- debug_printf ("Global group %s invalid. Domain: %s Use: %d",
- dgroup, domain, use);
- }
-
- NetApiBufferFree (buf);
- return true;
-}
-
-static bool
-is_group_member (WCHAR *wgroup, PSID pusersid, cygsidlist &grp_list)
-{
- LPLOCALGROUP_MEMBERS_INFO_0 buf;
- DWORD cnt, tot;
- NET_API_STATUS ret;
- bool retval = false;
-
- /* Members can be users or global groups */
- ret = NetLocalGroupGetMembers (NULL, wgroup, 0, (LPBYTE *) &buf,
- MAX_PREFERRED_LENGTH, &cnt, &tot, NULL);
- if (ret)
- return false;
-
- for (DWORD bidx = 0; !retval && bidx < cnt; ++bidx)
- if (EqualSid (pusersid, buf[bidx].lgrmi0_sid))
- retval = true;
- else
- for (int glidx = 0; !retval && glidx < grp_list.count; ++glidx)
- if (EqualSid (grp_list.sids[glidx], buf[bidx].lgrmi0_sid))
- retval = true;
-
- NetApiBufferFree (buf);
- return retval;
-}
-
-static bool
-get_user_local_groups (cygsidlist &grp_list, PSID pusersid)
-{
- LPLOCALGROUP_INFO_0 buf;
- DWORD cnt, tot;
- NET_API_STATUS ret;
-
- ret = NetLocalGroupEnum (NULL, 0, (LPBYTE *) &buf,
- MAX_PREFERRED_LENGTH, &cnt, &tot, NULL);
- if (ret)
- {
- __seterrno_from_win_error (ret);
- return false;
- }
-
- char bgroup[INTERNET_MAX_HOST_NAME_LENGTH + GNLEN + 2];
- char lgroup[INTERNET_MAX_HOST_NAME_LENGTH + GNLEN + 2];
- DWORD blen, llen;
- SID_NAME_USE use;
-
- blen = llen = INTERNET_MAX_HOST_NAME_LENGTH + 1;
- if (!LookupAccountSid (NULL, well_known_admins_sid, lgroup, &llen, bgroup, &blen, &use)
- || !GetComputerNameA (lgroup, &(llen = INTERNET_MAX_HOST_NAME_LENGTH + 1)))
- {
- __seterrno ();
- return false;
- }
- bgroup[blen++] = lgroup[llen++] = '\\';
-
- for (DWORD i = 0; i < cnt; ++i)
- if (is_group_member (buf[i].lgrpi0_name, pusersid, grp_list))
- {
- cygsid gsid;
- DWORD glen = MAX_SID_LEN;
- char domain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- DWORD dlen = sizeof (domain);
-
- use = SidTypeInvalid;
- sys_wcstombs (bgroup + blen, buf[i].lgrpi0_name, GNLEN + 1);
- if (!LookupAccountName (NULL, bgroup, gsid, &glen, domain, &dlen, &use))
- {
- if (GetLastError () != ERROR_NONE_MAPPED)
- debug_printf ("LookupAccountName(%s): %E", bgroup);
- strcpy (lgroup + llen, bgroup + blen);
- if (!LookupAccountName (NULL, lgroup, gsid, &glen,
- domain, &dlen, &use))
- debug_printf ("LookupAccountName(%s): %E", lgroup);
- }
- if (!legal_sid_type (use))
- debug_printf ("Rejecting local %s. use: %d", bgroup + blen, use);
- else if (!grp_list.contains (gsid))
- grp_list += gsid;
- }
- NetApiBufferFree (buf);
- return true;
-}
-
-static bool
-sid_in_token_groups (PTOKEN_GROUPS grps, cygpsid sid)
-{
- if (!grps)
- return false;
- for (DWORD i = 0; i < grps->GroupCount; ++i)
- if (sid == grps->Groups[i].Sid)
- return true;
- return false;
-}
-
-#if 0 /* Unused */
-static BOOL
-get_user_primary_group (WCHAR *wlogonserver, const char *user,
- PSID pusersid, cygsid &pgrpsid)
-{
- LPUSER_INFO_3 buf;
- WCHAR wuser[UNLEN + 1];
- NET_API_STATUS ret;
- BOOL retval = FALSE;
- UCHAR count = 0;
-
- if (well_known_system_sid == pusersid)
- {
- pgrpsid = well_known_system_sid;
- return TRUE;
- }
-
- sys_mbstowcs (wuser, user, UNLEN + 1);
- ret = NetUserGetInfo (wlogonserver, wuser, 3, (LPBYTE *) &buf);
- if (ret)
- {
- __seterrno_from_win_error (ret);
- return FALSE;
- }
-
- pgrpsid = pusersid;
- if (IsValidSid (pgrpsid)
- && (count = *GetSidSubAuthorityCount (pgrpsid)) > 1)
- {
- *GetSidSubAuthority (pgrpsid, count - 1) = buf->usri3_primary_group_id;
- retval = TRUE;
- }
- NetApiBufferFree (buf);
- return retval;
-}
-#endif
-
-static void
-get_unix_group_sidlist (struct passwd *pw, cygsidlist &grp_list)
-{
- struct __group32 *gr;
- cygsid gsid;
-
- for (int gidx = 0; (gr = internal_getgrent (gidx)); ++gidx)
- {
- if (gr->gr_gid == (__gid32_t) pw->pw_gid)
- goto found;
- else if (gr->gr_mem)
- for (int gi = 0; gr->gr_mem[gi]; ++gi)
- if (strcasematch (pw->pw_name, gr->gr_mem[gi]))
- goto found;
- continue;
- found:
- if (gsid.getfromgr (gr) && !grp_list.contains (gsid))
- grp_list += gsid;
-
- }
-}
-
-static void
-get_token_group_sidlist (cygsidlist &grp_list, PTOKEN_GROUPS my_grps,
- LUID auth_luid, int &auth_pos)
-{
- auth_pos = -1;
- if (my_grps)
- {
- if (sid_in_token_groups (my_grps, well_known_local_sid))
- grp_list += well_known_local_sid;
- if (sid_in_token_groups (my_grps, well_known_dialup_sid))
- grp_list += well_known_dialup_sid;
- if (sid_in_token_groups (my_grps, well_known_network_sid))
- grp_list += well_known_network_sid;
- if (sid_in_token_groups (my_grps, well_known_batch_sid))
- grp_list += well_known_batch_sid;
- if (sid_in_token_groups (my_grps, well_known_interactive_sid))
- grp_list += well_known_interactive_sid;
- if (sid_in_token_groups (my_grps, well_known_service_sid))
- grp_list += well_known_service_sid;
- }
- else
- {
- grp_list += well_known_local_sid;
- grp_list += well_known_interactive_sid;
- }
- if (auth_luid.QuadPart != 999) /* != SYSTEM_LUID */
- {
- char buf[64];
- __small_sprintf (buf, "S-1-5-5-%u-%u", auth_luid.HighPart,
- auth_luid.LowPart);
- grp_list += buf;
- auth_pos = grp_list.count - 1;
- }
-}
-
-static bool
-get_initgroups_sidlist (cygsidlist &grp_list,
- PSID usersid, PSID pgrpsid, struct passwd *pw,
- PTOKEN_GROUPS my_grps, LUID auth_luid, int &auth_pos,
- bool &special_pgrp)
-{
- grp_list += well_known_world_sid;
- grp_list += well_known_authenticated_users_sid;
- if (well_known_system_sid == usersid)
- {
- auth_pos = -1;
- grp_list += well_known_admins_sid;
- get_unix_group_sidlist (pw, grp_list);
- }
- else
- {
- char user[UNLEN + 1];
- char domain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- WCHAR wserver[INTERNET_MAX_HOST_NAME_LENGTH + 3];
- char server[INTERNET_MAX_HOST_NAME_LENGTH + 3];
-
- get_token_group_sidlist (grp_list, my_grps, auth_luid, auth_pos);
- extract_nt_dom_user (pw, domain, user);
- if (get_logon_server (domain, server, wserver))
- get_user_groups (wserver, grp_list, user, domain);
- get_unix_group_sidlist (pw, grp_list);
- if (!get_user_local_groups (grp_list, usersid))
- return false;
- }
- /* special_pgrp true if pgrpsid is not in normal groups */
- if ((special_pgrp = !grp_list.contains (pgrpsid)))
- grp_list += pgrpsid;
- return true;
-}
-
-static void
-get_setgroups_sidlist (cygsidlist &tmp_list, PTOKEN_GROUPS my_grps,
- user_groups &groups, LUID auth_luid, int &auth_pos)
-{
- PSID pgpsid = groups.pgsid;
- tmp_list += well_known_world_sid;
- tmp_list += well_known_authenticated_users_sid;
- get_token_group_sidlist (tmp_list, my_grps, auth_luid, auth_pos);
- for (int gidx = 0; gidx < groups.sgsids.count; gidx++)
- tmp_list += groups.sgsids.sids[gidx];
- if (!groups.sgsids.contains (pgpsid))
- tmp_list += pgpsid;
-}
-
-static const char *sys_privs[] = {
- SE_TCB_NAME,
- SE_ASSIGNPRIMARYTOKEN_NAME,
- SE_CREATE_TOKEN_NAME,
- SE_CHANGE_NOTIFY_NAME,
- SE_SECURITY_NAME,
- SE_BACKUP_NAME,
- SE_RESTORE_NAME,
- SE_SYSTEMTIME_NAME,
- SE_SHUTDOWN_NAME,
- SE_REMOTE_SHUTDOWN_NAME,
- SE_TAKE_OWNERSHIP_NAME,
- SE_DEBUG_NAME,
- SE_SYSTEM_ENVIRONMENT_NAME,
- SE_SYSTEM_PROFILE_NAME,
- SE_PROF_SINGLE_PROCESS_NAME,
- SE_INC_BASE_PRIORITY_NAME,
- SE_LOAD_DRIVER_NAME,
- SE_CREATE_PAGEFILE_NAME,
- SE_INCREASE_QUOTA_NAME
-};
-
-#define SYSTEM_PERMISSION_COUNT (sizeof sys_privs / sizeof (const char *))
-
-PTOKEN_PRIVILEGES
-get_system_priv_list (cygsidlist &grp_list)
-{
- LUID priv;
- PTOKEN_PRIVILEGES privs = (PTOKEN_PRIVILEGES)
- malloc (sizeof (ULONG) + 20 * sizeof (LUID_AND_ATTRIBUTES));
- if (!privs)
- {
- debug_printf ("malloc (system_privs) failed.");
- return NULL;
- }
- privs->PrivilegeCount = 0;
-
- for (DWORD i = 0; i < SYSTEM_PERMISSION_COUNT; ++i)
- if (LookupPrivilegeValue (NULL, sys_privs[i], &priv))
- {
- privs->Privileges[privs->PrivilegeCount].Luid = priv;
- privs->Privileges[privs->PrivilegeCount].Attributes =
- SE_PRIVILEGE_ENABLED | SE_PRIVILEGE_ENABLED_BY_DEFAULT;
- ++privs->PrivilegeCount;
- }
- return privs;
-}
-
-PTOKEN_PRIVILEGES
-get_priv_list (LSA_HANDLE lsa, cygsid &usersid, cygsidlist &grp_list)
-{
- PLSA_UNICODE_STRING privstrs;
- ULONG cnt;
- PTOKEN_PRIVILEGES privs = NULL;
- NTSTATUS ret;
- char buf[INTERNET_MAX_HOST_NAME_LENGTH + 1];
-
- if (usersid == well_known_system_sid)
- return get_system_priv_list (grp_list);
-
- for (int grp = -1; grp < grp_list.count; ++grp)
- {
- if (grp == -1)
- {
- if ((ret = LsaEnumerateAccountRights (lsa, usersid, &privstrs,
- &cnt)) != STATUS_SUCCESS)
- continue;
- }
- else if ((ret = LsaEnumerateAccountRights (lsa, grp_list.sids[grp],
- &privstrs, &cnt))
- != STATUS_SUCCESS)
- continue;
- for (ULONG i = 0; i < cnt; ++i)
- {
- LUID priv;
- PTOKEN_PRIVILEGES tmp;
- DWORD tmp_count;
-
- lsa2str (buf, privstrs[i], sizeof (buf) - 1);
- if (!LookupPrivilegeValue (NULL, buf, &priv))
- continue;
-
- for (DWORD p = 0; privs && p < privs->PrivilegeCount; ++p)
- if (!memcmp (&priv, &privs->Privileges[p].Luid, sizeof (LUID)))
- goto next_account_right;
-
- tmp_count = privs ? privs->PrivilegeCount : 0;
- tmp = (PTOKEN_PRIVILEGES)
- realloc (privs, sizeof (ULONG) +
- (tmp_count + 1) * sizeof (LUID_AND_ATTRIBUTES));
- if (!tmp)
- {
- if (privs)
- free (privs);
- LsaFreeMemory (privstrs);
- debug_printf ("realloc (privs) failed.");
- return NULL;
- }
- tmp->PrivilegeCount = tmp_count;
- privs = tmp;
- privs->Privileges[privs->PrivilegeCount].Luid = priv;
- privs->Privileges[privs->PrivilegeCount].Attributes =
- SE_PRIVILEGE_ENABLED | SE_PRIVILEGE_ENABLED_BY_DEFAULT;
- ++privs->PrivilegeCount;
-
- next_account_right:
- ;
- }
- LsaFreeMemory (privstrs);
- }
- return privs;
-}
-
-/* Accept a token if
- - the requested usersid matches the TokenUser and
- - if setgroups has been called:
- the token groups that are listed in /etc/group match the union of
- the requested primary and supplementary groups in gsids.
- - else the (unknown) implicitly requested supplementary groups and those
- in the token are the groups associated with the usersid. We assume
- they match and verify only the primary groups.
- The requested primary group must appear in the token.
- The primary group in the token is a group associated with the usersid,
- except if the token is internal and the group is in the token SD
- (see create_token). In that latter case that group must match the
- requested primary group. */
-bool
-verify_token (HANDLE token, cygsid &usersid, user_groups &groups, bool *pintern)
-{
- DWORD size;
- bool intern = false;
-
- if (pintern)
- {
- TOKEN_SOURCE ts;
- if (!GetTokenInformation (token, TokenSource,
- &ts, sizeof ts, &size))
- debug_printf ("GetTokenInformation(): %E");
- else
- *pintern = intern = !memcmp (ts.SourceName, "Cygwin.1", 8);
- }
- /* Verify usersid */
- cygsid tok_usersid = NO_SID;
- if (!GetTokenInformation (token, TokenUser,
- &tok_usersid, sizeof tok_usersid, &size))
- debug_printf ("GetTokenInformation(): %E");
- if (usersid != tok_usersid)
- return false;
-
- /* For an internal token, if setgroups was not called and if the sd group
- is not well_known_null_sid, it must match pgrpsid */
- if (intern && !groups.issetgroups ())
- {
- char sd_buf[MAX_SID_LEN + sizeof (SECURITY_DESCRIPTOR)];
- cygpsid gsid (NO_SID);
- if (!GetKernelObjectSecurity (token, GROUP_SECURITY_INFORMATION,
- (PSECURITY_DESCRIPTOR) sd_buf,
- sizeof sd_buf, &size))
- debug_printf ("GetKernelObjectSecurity(): %E");
- else if (!GetSecurityDescriptorGroup ((PSECURITY_DESCRIPTOR) sd_buf,
- (PSID *) &gsid, (BOOL *) &size))
- debug_printf ("GetSecurityDescriptorGroup(): %E");
- if (well_known_null_sid != gsid)
- return gsid == groups.pgsid;
- }
-
- PTOKEN_GROUPS my_grps;
- bool saw_buf[NGROUPS_MAX] = {};
- bool *saw = saw_buf, sawpg = false, ret = false;
-
- if (!GetTokenInformation (token, TokenGroups, NULL, 0, &size) &&
- GetLastError () != ERROR_INSUFFICIENT_BUFFER)
- debug_printf ("GetTokenInformation(token, TokenGroups): %E");
- else if (!(my_grps = (PTOKEN_GROUPS) alloca (size)))
- debug_printf ("alloca (my_grps) failed.");
- else if (!GetTokenInformation (token, TokenGroups, my_grps, size, &size))
- debug_printf ("GetTokenInformation(my_token, TokenGroups): %E");
- else if (!groups.issetgroups ()) /* setgroups was never called */
- ret = sid_in_token_groups (my_grps, groups.pgsid)
- || groups.pgsid == usersid;
- else /* setgroups was called */
- {
- struct __group32 *gr;
- cygsid gsid;
- if (groups.sgsids.count > (int) (sizeof (saw_buf) / sizeof (*saw_buf))
- && !(saw = (bool *) calloc (groups.sgsids.count, sizeof (bool))))
- goto done;
-
- /* token groups found in /etc/group match the user.gsids ? */
- for (int gidx = 0; (gr = internal_getgrent (gidx)); ++gidx)
- if (gsid.getfromgr (gr) && sid_in_token_groups (my_grps, gsid))
- {
- int pos = groups.sgsids.position (gsid);
- if (pos >= 0)
- saw[pos] = true;
- else if (groups.pgsid == gsid)
- sawpg = true;
- else if (gsid != well_known_world_sid
- && gsid != usersid)
- goto done;
- }
- for (int gidx = 0; gidx < groups.sgsids.count; gidx++)
- if (!saw[gidx])
- goto done;
- ret = sawpg
- || groups.sgsids.contains (groups.pgsid)
- || groups.pgsid == usersid;
- }
-done:
- if (saw != saw_buf)
- free (saw);
- return ret;
-}
-
-HANDLE
-create_token (cygsid &usersid, user_groups &new_groups, struct passwd *pw)
-{
- NTSTATUS ret;
- LSA_HANDLE lsa = INVALID_HANDLE_VALUE;
- int old_priv_state;
-
- cygsidlist tmp_gsids (cygsidlist_auto, 12);
-
- SECURITY_QUALITY_OF_SERVICE sqos =
- { sizeof sqos, SecurityImpersonation, SECURITY_STATIC_TRACKING, FALSE };
- OBJECT_ATTRIBUTES oa = { sizeof oa, 0, 0, 0, 0, &sqos };
- PSECURITY_ATTRIBUTES psa;
- bool special_pgrp = false;
- char sa_buf[1024];
- LUID auth_luid = SYSTEM_LUID;
- LARGE_INTEGER exp = { QuadPart:INT64_MAX };
-
- TOKEN_USER user;
- PTOKEN_GROUPS new_tok_gsids = NULL;
- PTOKEN_PRIVILEGES privs = NULL;
- TOKEN_OWNER owner;
- TOKEN_PRIMARY_GROUP pgrp;
- TOKEN_DEFAULT_DACL dacl = {};
- TOKEN_SOURCE source;
- TOKEN_STATISTICS stats;
- memcpy (source.SourceName, "Cygwin.1", 8);
- source.SourceIdentifier.HighPart = 0;
- source.SourceIdentifier.LowPart = 0x0101;
-
- HANDLE token = INVALID_HANDLE_VALUE;
- HANDLE primary_token = INVALID_HANDLE_VALUE;
-
- HANDLE my_token = INVALID_HANDLE_VALUE;
- PTOKEN_GROUPS my_tok_gsids = NULL;
- DWORD size;
-
- /* SE_CREATE_TOKEN_NAME privilege needed to call NtCreateToken. */
- if ((old_priv_state = set_process_privilege (SE_CREATE_TOKEN_NAME)) < 0)
- goto out;
-
- /* Open policy object. */
- if ((lsa = open_local_policy ()) == INVALID_HANDLE_VALUE)
- goto out;
-
- /* User, owner, primary group. */
- user.User.Sid = usersid;
- user.User.Attributes = 0;
- owner.Owner = usersid;
-
- /* Retrieve authentication id and group list from own process. */
- if (!OpenProcessToken (hMainProc, TOKEN_QUERY, &my_token))
- debug_printf ("OpenProcessToken(my_token): %E");
- else
- {
- /* Switching user context to SYSTEM doesn't inherit the authentication
- id of the user account running current process. */
- if (usersid != well_known_system_sid)
- if (!GetTokenInformation (my_token, TokenStatistics,
- &stats, sizeof stats, &size))
- debug_printf
- ("GetTokenInformation(my_token, TokenStatistics): %E");
- else
- auth_luid = stats.AuthenticationId;
-
- /* Retrieving current processes group list to be able to inherit
- some important well known group sids. */
- if (!GetTokenInformation (my_token, TokenGroups, NULL, 0, &size) &&
- GetLastError () != ERROR_INSUFFICIENT_BUFFER)
- debug_printf ("GetTokenInformation(my_token, TokenGroups): %E");
- else if (!(my_tok_gsids = (PTOKEN_GROUPS) malloc (size)))
- debug_printf ("malloc (my_tok_gsids) failed.");
- else if (!GetTokenInformation (my_token, TokenGroups, my_tok_gsids,
- size, &size))
- {
- debug_printf ("GetTokenInformation(my_token, TokenGroups): %E");
- free (my_tok_gsids);
- my_tok_gsids = NULL;
- }
- CloseHandle (my_token);
- }
-
- /* Create list of groups, the user is member in. */
- int auth_pos;
- if (new_groups.issetgroups ())
- get_setgroups_sidlist (tmp_gsids, my_tok_gsids, new_groups, auth_luid,
- auth_pos);
- else if (!get_initgroups_sidlist (tmp_gsids, usersid, new_groups.pgsid, pw,
- my_tok_gsids, auth_luid, auth_pos,
- special_pgrp))
- goto out;
-
- /* Primary group. */
- pgrp.PrimaryGroup = new_groups.pgsid;
-
- /* Create a TOKEN_GROUPS list from the above retrieved list of sids. */
- char grps_buf[sizeof (ULONG) + tmp_gsids.count * sizeof (SID_AND_ATTRIBUTES)];
- new_tok_gsids = (PTOKEN_GROUPS) grps_buf;
- new_tok_gsids->GroupCount = tmp_gsids.count;
- for (DWORD i = 0; i < new_tok_gsids->GroupCount; ++i)
- {
- new_tok_gsids->Groups[i].Sid = tmp_gsids.sids[i];
- new_tok_gsids->Groups[i].Attributes = SE_GROUP_MANDATORY |
- SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED;
- }
- if (auth_pos >= 0)
- new_tok_gsids->Groups[auth_pos].Attributes |= SE_GROUP_LOGON_ID;
-
- /* Retrieve list of privileges of that user. */
- if (!(privs = get_priv_list (lsa, usersid, tmp_gsids)))
- goto out;
-
- /* Let's be heroic... */
- ret = NtCreateToken (&token, TOKEN_ALL_ACCESS, &oa, TokenImpersonation,
- &auth_luid, &exp, &user, new_tok_gsids, privs, &owner,
- &pgrp, &dacl, &source);
- if (ret)
- __seterrno_from_win_error (RtlNtStatusToDosError (ret));
- else if (GetLastError () == ERROR_PROC_NOT_FOUND)
- {
- __seterrno ();
- debug_printf ("Loading NtCreateToken failed.");
- }
- else
- {
- /* Set security descriptor and primary group */
- psa = sec_user (sa_buf, usersid);
- if (psa->lpSecurityDescriptor &&
- !SetSecurityDescriptorGroup ((PSECURITY_DESCRIPTOR)
- psa->lpSecurityDescriptor,
- special_pgrp ? new_groups.pgsid
- : well_known_null_sid,
- FALSE))
- debug_printf ("SetSecurityDescriptorGroup %E");
- /* Convert to primary token. */
- if (!DuplicateTokenEx (token, MAXIMUM_ALLOWED, psa, SecurityImpersonation,
- TokenPrimary, &primary_token))
- {
- __seterrno ();
- debug_printf ("DuplicateTokenEx %E");
- }
- }
-
-out:
- if (old_priv_state >= 0)
- set_process_privilege (SE_CREATE_TOKEN_NAME, old_priv_state);
- if (token != INVALID_HANDLE_VALUE)
- CloseHandle (token);
- if (privs)
- free (privs);
- if (my_tok_gsids)
- free (my_tok_gsids);
- close_local_policy (lsa);
-
- debug_printf ("%d = create_token ()", primary_token);
- return primary_token;
-}
-
-int subauth_id = 255;
-
-HANDLE
-subauth (struct passwd *pw)
-{
- LSA_STRING name;
- HANDLE lsa_hdl;
- LSA_OPERATIONAL_MODE sec_mode;
- NTSTATUS ret, ret2;
- ULONG package_id, size;
- struct {
- LSA_STRING str;
- CHAR buf[16];
- } origin;
- struct {
- MSV1_0_LM20_LOGON auth;
- WCHAR dombuf[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- WCHAR usrbuf[UNLEN + 1];
- WCHAR wkstbuf[1];
- CHAR authinf1[1];
- CHAR authinf2[1];
- } subbuf;
- TOKEN_SOURCE ts;
- PMSV1_0_LM20_LOGON_PROFILE profile;
- LUID luid;
- QUOTA_LIMITS quota;
- char nt_domain[INTERNET_MAX_HOST_NAME_LENGTH + 1];
- char nt_user[UNLEN + 1];
- SECURITY_ATTRIBUTES sa = { sizeof sa, NULL, TRUE };
- HANDLE user_token = INVALID_HANDLE_VALUE;
- HANDLE primary_token = INVALID_HANDLE_VALUE;
- int old_tcb_state;
-
- if ((old_tcb_state = set_process_privilege (SE_TCB_NAME)) < 0)
- return INVALID_HANDLE_VALUE;
-
- /* Register as logon process. */
- str2lsa (name, "Cygwin");
- SetLastError (0);
- ret = LsaRegisterLogonProcess (&name, &lsa_hdl, &sec_mode);
- if (ret != STATUS_SUCCESS)
- {
- debug_printf ("LsaRegisterLogonProcess: %d", ret);
- __seterrno_from_win_error (LsaNtStatusToWinError (ret));
- goto out;
- }
- else if (GetLastError () == ERROR_PROC_NOT_FOUND)
- {
- debug_printf ("Couldn't load Secur32.dll");
- goto out;
- }
- /* Get handle to MSV1_0 package. */
- str2lsa (name, MSV1_0_PACKAGE_NAME);
- ret = LsaLookupAuthenticationPackage (lsa_hdl, &name, &package_id);
- if (ret != STATUS_SUCCESS)
- {
- debug_printf ("LsaLookupAuthenticationPackage: %d", ret);
- __seterrno_from_win_error (LsaNtStatusToWinError (ret));
- LsaDeregisterLogonProcess (lsa_hdl);
- goto out;
- }
- /* Create origin. */
- str2buf2lsa (origin.str, origin.buf, "Cygwin");
- /* Create token source. */
- memcpy (ts.SourceName, "Cygwin.1", 8);
- ts.SourceIdentifier.HighPart = 0;
- ts.SourceIdentifier.LowPart = 0x0100;
- /* Get user information. */
- extract_nt_dom_user (pw, nt_domain, nt_user);
- /* Fill subauth with values. */
- subbuf.auth.MessageType = MsV1_0NetworkLogon;
- str2buf2uni (subbuf.auth.LogonDomainName, subbuf.dombuf, nt_domain);
- str2buf2uni (subbuf.auth.UserName, subbuf.usrbuf, nt_user);
- str2buf2uni (subbuf.auth.Workstation, subbuf.wkstbuf, "");
- memcpy (subbuf.auth.ChallengeToClient, "12345678", MSV1_0_CHALLENGE_LENGTH);
- str2buf2lsa (subbuf.auth.CaseSensitiveChallengeResponse, subbuf.authinf1, "");
- str2buf2lsa (subbuf.auth.CaseInsensitiveChallengeResponse,subbuf.authinf2,"");
- subbuf.auth.ParameterControl = 0 | (subauth_id << 24);
- /* Try to logon... */
- ret = LsaLogonUser (lsa_hdl, (PLSA_STRING) &origin, Network,
- package_id, &subbuf, sizeof subbuf,
- NULL, &ts, (PVOID *) &profile, &size,
- &luid, &user_token, &quota, &ret2);
- if (ret != STATUS_SUCCESS)
- {
- debug_printf ("LsaLogonUser: %d", ret);
- __seterrno_from_win_error (LsaNtStatusToWinError (ret));
- LsaDeregisterLogonProcess (lsa_hdl);
- goto out;
- }
- LsaFreeReturnBuffer (profile);
- /* Convert to primary token. */
- if (!DuplicateTokenEx (user_token, TOKEN_ALL_ACCESS, &sa,
- SecurityImpersonation, TokenPrimary, &primary_token))
- __seterrno ();
-
-out:
- set_process_privilege (SE_TCB_NAME, old_tcb_state);
- if (user_token != INVALID_HANDLE_VALUE)
- CloseHandle (user_token);
- return primary_token;
-}
-
-/* read_sd reads a security descriptor from a file.
- In case of error, -1 is returned and errno is set.
- If sd_buf is too small, 0 is returned and sd_size
- is set to the needed buffer size.
- On success, 1 is returned.
-
- GetFileSecurity() is used instead of BackupRead()
- to avoid access denied errors if the caller has
- not the permission to open that file for read.
-
- Originally the function should return the size
- of the SD on success. Unfortunately NT returns
- 0 in `len' on success, while W2K returns the
- correct size!
-
- 2003-11-26: Now the function allocates the space needed by itself so
- it knows the real size and returns it in the security_descriptor object.
-*/
-
-LONG
-read_sd (const char *file, security_descriptor &sd)
-{
-
- DWORD len = 0;
- const char *pfile = file;
- char fbuf[CYG_MAX_PATH];
- if (current_codepage == oem_cp)
- {
- DWORD fname_len = min (sizeof (fbuf) - 1, strlen (file));
- bzero (fbuf, sizeof (fbuf));
- OemToCharBuff (file, fbuf, fname_len);
- pfile = fbuf;
- }
-
- if (!GetFileSecurity (pfile,
- OWNER_SECURITY_INFORMATION
- | GROUP_SECURITY_INFORMATION
- | DACL_SECURITY_INFORMATION,
- NULL, 0, &len)
- && GetLastError () != ERROR_INSUFFICIENT_BUFFER)
- {
- debug_printf ("file = %s", file);
- __seterrno ();
- return -1;
- }
- debug_printf ("file = %s: len=%d", file, len);
- if (!sd.malloc (len))
- {
- set_errno (ENOMEM);
- return -1;
- }
- if (!GetFileSecurity (pfile,
- OWNER_SECURITY_INFORMATION
- | GROUP_SECURITY_INFORMATION
- | DACL_SECURITY_INFORMATION,
- sd, len, &len))
- {
- __seterrno ();
- return -1;
- }
- return sd.size ();
-}
-
-LONG
-write_sd (HANDLE fh, const char *file, security_descriptor &sd)
-{
- NTSTATUS ret = STATUS_SUCCESS;
- int retry = 0;
- int res = -1;
- for (; retry < 2; ++retry)
- {
- if (retry && (fh = CreateFile (file, WRITE_OWNER | WRITE_DAC,
- FILE_SHARE_READ | FILE_SHARE_WRITE,
- &sec_none_nih, OPEN_EXISTING,
- FILE_ATTRIBUTE_NORMAL
- | FILE_FLAG_BACKUP_SEMANTICS,
- NULL)) == INVALID_HANDLE_VALUE)
- break;
- if (fh && (ret = NtSetSecurityObject (fh,
- DACL_SECURITY_INFORMATION
- | GROUP_SECURITY_INFORMATION
- | OWNER_SECURITY_INFORMATION,
- sd)) == STATUS_SUCCESS)
- break;
- }
- if (retry && fh != INVALID_HANDLE_VALUE)
- CloseHandle (fh);
- if (fh == INVALID_HANDLE_VALUE) /* CreateFile failed */
- __seterrno ();
- else if (ret != STATUS_SUCCESS) /* NtSetSecurityObject failed */
- __seterrno_from_win_error (RtlNtStatusToDosError (ret));
- else /* Everything's fine. */
- res = 0;
- return res;
-}
-
-static void
-get_attribute_from_acl (mode_t *attribute, PACL acl, PSID owner_sid,
- PSID group_sid, bool grp_member)
-{
- ACCESS_ALLOWED_ACE *ace;
- int allow = 0;
- int deny = 0;
- int *flags, *anti;
-
- for (DWORD i = 0; i < acl->AceCount; ++i)
- {
- if (!GetAce (acl, i, (PVOID *) &ace))
- continue;
- if (ace->Header.AceFlags & INHERIT_ONLY)
- continue;
- switch (ace->Header.AceType)
- {
- case ACCESS_ALLOWED_ACE_TYPE:
- flags = &allow;
- anti = &deny;
- break;
- case ACCESS_DENIED_ACE_TYPE:
- flags = &deny;
- anti = &allow;
- break;
- default:
- continue;
- }
-
- cygpsid ace_sid ((PSID) &ace->SidStart);
- if (ace_sid == well_known_world_sid)
- {
- if (ace->Mask & FILE_READ_BITS)
- *flags |= ((!(*anti & S_IROTH)) ? S_IROTH : 0)
- | ((!(*anti & S_IRGRP)) ? S_IRGRP : 0)
- | ((!(*anti & S_IRUSR)) ? S_IRUSR : 0);
- if (ace->Mask & FILE_WRITE_BITS)
- *flags |= ((!(*anti & S_IWOTH)) ? S_IWOTH : 0)
- | ((!(*anti & S_IWGRP)) ? S_IWGRP : 0)
- | ((!(*anti & S_IWUSR)) ? S_IWUSR : 0);
- if (ace->Mask & FILE_EXEC_BITS)
- *flags |= ((!(*anti & S_IXOTH)) ? S_IXOTH : 0)
- | ((!(*anti & S_IXGRP)) ? S_IXGRP : 0)
- | ((!(*anti & S_IXUSR)) ? S_IXUSR : 0);
- if ((S_ISDIR (*attribute)) &&
- (ace->Mask & (FILE_WRITE_DATA | FILE_EXECUTE | FILE_DELETE_CHILD))
- == (FILE_WRITE_DATA | FILE_EXECUTE))
- *flags |= S_ISVTX;
- }
- else if (ace_sid == well_known_null_sid)
- {
- /* Read SUID, SGID and VTX bits from NULL ACE. */
- if (ace->Mask & FILE_READ_DATA)
- *flags |= S_ISVTX;
- if (ace->Mask & FILE_WRITE_DATA)
- *flags |= S_ISGID;
- if (ace->Mask & FILE_APPEND_DATA)
- *flags |= S_ISUID;
- }
- else if (ace_sid == owner_sid)
- {
- if (ace->Mask & FILE_READ_BITS)
- *flags |= ((!(*anti & S_IRUSR)) ? S_IRUSR : 0);
- if (ace->Mask & FILE_WRITE_BITS)
- *flags |= ((!(*anti & S_IWUSR)) ? S_IWUSR : 0);
- if (ace->Mask & FILE_EXEC_BITS)
- *flags |= ((!(*anti & S_IXUSR)) ? S_IXUSR : 0);
- }
- else if (ace_sid == group_sid)
- {
- if (ace->Mask & FILE_READ_BITS)
- *flags |= ((!(*anti & S_IRGRP)) ? S_IRGRP : 0)
- | ((grp_member && !(*anti & S_IRUSR)) ? S_IRUSR : 0);
- if (ace->Mask & FILE_WRITE_BITS)
- *flags |= ((!(*anti & S_IWGRP)) ? S_IWGRP : 0)
- | ((grp_member && !(*anti & S_IWUSR)) ? S_IWUSR : 0);
- if (ace->Mask & FILE_EXEC_BITS)
- *flags |= ((!(*anti & S_IXGRP)) ? S_IXGRP : 0)
- | ((grp_member && !(*anti & S_IXUSR)) ? S_IXUSR : 0);
- }
- }
- *attribute &= ~(S_IRWXU | S_IRWXG | S_IRWXO | S_ISVTX | S_ISGID | S_ISUID);
- if (owner_sid && group_sid && EqualSid (owner_sid, group_sid)
- /* FIXME: temporary exception for /var/empty */
- && well_known_system_sid != group_sid)
- {
- allow &= ~(S_IRGRP | S_IWGRP | S_IXGRP);
- allow |= (((allow & S_IRUSR) ? S_IRGRP : 0)
- | ((allow & S_IWUSR) ? S_IWGRP : 0)
- | ((allow & S_IXUSR) ? S_IXGRP : 0));
- }
- *attribute |= allow;
- return;
-}
-
-static void
-get_info_from_sd (PSECURITY_DESCRIPTOR psd, mode_t *attribute,
- __uid32_t *uidret, __gid32_t *gidret)
-{
- if (!psd)
- {
- /* If reading the security descriptor failed, treat the object
- as unreadable. */
- if (attribute)
- *attribute &= ~(S_IRWXU | S_IRWXG | S_IRWXO);
- if (uidret)
- *uidret = ILLEGAL_UID;
- if (gidret)
- *gidret = ILLEGAL_GID;
- return;
- }
-
- cygpsid owner_sid;
- cygpsid group_sid;
- BOOL dummy;
-
- if (!GetSecurityDescriptorOwner (psd, (PSID *) &owner_sid, &dummy))
- debug_printf ("GetSecurityDescriptorOwner %E");
- if (!GetSecurityDescriptorGroup (psd, (PSID *) &group_sid, &dummy))
- debug_printf ("GetSecurityDescriptorGroup %E");
-
- __uid32_t uid;
- __gid32_t gid;
- bool grp_member = get_sids_info (owner_sid, group_sid, &uid, &gid);
- if (uidret)
- *uidret = uid;
- if (gidret)
- *gidret = gid;
-
- if (!attribute)
- {
- syscall_printf ("uid %d, gid %d", uid, gid);
- return;
- }
-
- PACL acl;
- BOOL acl_exists;
-
- if (!GetSecurityDescriptorDacl (psd, &acl_exists, &acl, &dummy))
- {
- __seterrno ();
- debug_printf ("GetSecurityDescriptorDacl %E");
- *attribute &= ~(S_IRWXU | S_IRWXG | S_IRWXO);
- }
- else if (!acl_exists || !acl)
- *attribute |= S_IRWXU | S_IRWXG | S_IRWXO;
- else
- get_attribute_from_acl (attribute, acl, owner_sid, group_sid, grp_member);
-
- syscall_printf ("%sACL = %x, uid %d, gid %d",
- (!acl_exists || !acl)?"NO ":"", *attribute, uid, gid);
- return;
-}
-
-static void
-get_nt_attribute (const char *file, mode_t *attribute,
- __uid32_t *uidret, __gid32_t *gidret)
-{
- security_descriptor sd;
-
- if (read_sd (file, sd) <= 0)
- debug_printf ("read_sd %E");
- get_info_from_sd (sd, attribute, uidret, gidret);
-}
-
-int
-get_nt_object_security (HANDLE handle, SE_OBJECT_TYPE object_type,
- security_descriptor &sd_ret)
-{
- NTSTATUS ret;
- ULONG len = 0;
- ret = NtQuerySecurityObject (handle,
- DACL_SECURITY_INFORMATION
- | GROUP_SECURITY_INFORMATION
- | OWNER_SECURITY_INFORMATION,
- sd_ret, len, &len);
- if (ret == STATUS_BUFFER_TOO_SMALL)
- {
- if (!sd_ret.malloc (len))
- set_errno (ENOMEM);
- else
- ret = NtQuerySecurityObject (handle,
- DACL_SECURITY_INFORMATION
- | GROUP_SECURITY_INFORMATION
- | OWNER_SECURITY_INFORMATION,
- sd_ret, len, &len);
- }
- if (ret != STATUS_SUCCESS)
- {
- __seterrno_from_win_error (RtlNtStatusToDosError (ret));
- return -1;
- }
- return 0;
-}
-
-static int
-get_nt_object_attribute (HANDLE handle, SE_OBJECT_TYPE object_type,
- mode_t *attribute, __uid32_t *uidret,
- __gid32_t *gidret)
-{
- security_descriptor sd;
- PSECURITY_DESCRIPTOR psd = NULL;
-
- if (get_nt_object_security (handle, object_type, sd))
- {
- if (object_type == SE_FILE_OBJECT)
- return -1;
- }
- else
- psd = sd;
- get_info_from_sd (psd, attribute, uidret, gidret);
- return 0;
-}
-
-int
-get_object_attribute (HANDLE handle, SE_OBJECT_TYPE object_type,
- mode_t *attribute, __uid32_t *uidret, __gid32_t *gidret)
-{
- if (allow_ntsec && wincap.has_security ())
- {
- get_nt_object_attribute (handle, object_type, attribute, uidret, gidret);
- return 0;
- }
- /* The entries are already set to default values */
- return -1;
-}
-
-int
-get_file_attribute (int use_ntsec, HANDLE handle, const char *file,
- mode_t *attribute, __uid32_t *uidret, __gid32_t *gidret)
-{
- int res;
- syscall_printf ("file: %s", file);
-
- if (use_ntsec && allow_ntsec && wincap.has_security ())
- {
- if (!handle || get_nt_object_attribute (handle, SE_FILE_OBJECT,
- attribute, uidret, gidret))
- get_nt_attribute (file, attribute, uidret, gidret);
- return 0;
- }
-
- if (uidret)
- *uidret = myself->uid;
- if (gidret)
- *gidret = myself->gid;
-
- if (!attribute)
- return 0;
-
- if (allow_ntea)
- {
- int oatt = *attribute;
- res = NTReadEA (file, ".UNIXATTR", (char *)attribute, sizeof (*attribute));
- *attribute |= oatt;
- }
- else
- res = 0;
-
- return res > 0 ? 0 : -1;
-}
-
-bool
-add_access_allowed_ace (PACL acl, int offset, DWORD attributes,
- PSID sid, size_t &len_add, DWORD inherit)
-{
- if (!AddAccessAllowedAce (acl, ACL_REVISION, attributes, sid))
- {
- __seterrno ();
- return false;
- }
- ACCESS_ALLOWED_ACE *ace;
- if (inherit && GetAce (acl, offset, (PVOID *) &ace))
- ace->Header.AceFlags |= inherit;
- len_add += sizeof (ACCESS_ALLOWED_ACE) - sizeof (DWORD) + GetLengthSid (sid);
- return true;
-}
-
-bool
-add_access_denied_ace (PACL acl, int offset, DWORD attributes,
- PSID sid, size_t &len_add, DWORD inherit)
-{
- if (!AddAccessDeniedAce (acl, ACL_REVISION, attributes, sid))
- {
- __seterrno ();
- return false;
- }
- ACCESS_DENIED_ACE *ace;
- if (inherit && GetAce (acl, offset, (PVOID *) &ace))
- ace->Header.AceFlags |= inherit;
- len_add += sizeof (ACCESS_DENIED_ACE) - sizeof (DWORD) + GetLengthSid (sid);
- return true;
-}
-
-static PSECURITY_DESCRIPTOR
-alloc_sd (__uid32_t uid, __gid32_t gid, int attribute,
- security_descriptor &sd_ret)
-{
- BOOL dummy;
-
- debug_printf("uid %d, gid %d, attribute %x", uid, gid, attribute);
-
- /* Get owner and group from current security descriptor. */
- PSID cur_owner_sid = NULL;
- PSID cur_group_sid = NULL;
- if (!GetSecurityDescriptorOwner (sd_ret, &cur_owner_sid, &dummy))
- debug_printf ("GetSecurityDescriptorOwner %E");
- if (!GetSecurityDescriptorGroup (sd_ret, &cur_group_sid, &dummy))
- debug_printf ("GetSecurityDescriptorGroup %E");
-
- /* Get SID of owner. */
- cygsid owner_sid;
- /* Check for current user first */
- if (uid == myself->uid)
- owner_sid = cygheap->user.sid ();
- else if (uid == ILLEGAL_UID)
- owner_sid = cur_owner_sid;
- else if (!owner_sid.getfrompw (internal_getpwuid (uid)))
- {
- set_errno (EINVAL);
- return NULL;
- }
- owner_sid.debug_print ("alloc_sd: owner SID =");
-
- /* Get SID of new group. */
- cygsid group_sid;
- /* Check for current user first */
- if (gid == myself->gid)
- group_sid = cygheap->user.groups.pgsid;
- else if (gid == ILLEGAL_GID)
- group_sid = cur_group_sid;
- else if (!group_sid.getfromgr (internal_getgrgid (gid)))
- {
- set_errno (EINVAL);
- return NULL;
- }
- group_sid.debug_print ("alloc_sd: group SID =");
-
- /* Initialize local security descriptor. */
- SECURITY_DESCRIPTOR sd;
- if (!InitializeSecurityDescriptor (&sd, SECURITY_DESCRIPTOR_REVISION))
- {
- __seterrno ();
- return NULL;
- }
-
- /*
- * We set the SE_DACL_PROTECTED flag here to prevent the DACL from being
- * modified by inheritable ACEs.
- * This flag as well as the SetSecurityDescriptorControl call are available
- * only since Win2K.
- */
- if (wincap.has_security_descriptor_control ())
- SetSecurityDescriptorControl (&sd, SE_DACL_PROTECTED, SE_DACL_PROTECTED);
-
- /* Create owner for local security descriptor. */
- if (!SetSecurityDescriptorOwner (&sd, owner_sid, FALSE))
- {
- __seterrno ();
- return NULL;
- }
-
- /* Create group for local security descriptor. */
- if (!SetSecurityDescriptorGroup (&sd, group_sid, FALSE))
- {
- __seterrno ();
- return NULL;
- }
-
- /* Initialize local access control list. */
- char acl_buf[3072];
- PACL acl = (PACL) acl_buf;
- if (!InitializeAcl (acl, 3072, ACL_REVISION))
- {
- __seterrno ();
- return NULL;
- }
-
- /* From here fill ACL. */
- size_t acl_len = sizeof (ACL);
- int ace_off = 0;
-
- /* Construct allow attribute for owner. */
- DWORD owner_allow = STANDARD_RIGHTS_ALL
- | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA;
- if (attribute & S_IRUSR)
- owner_allow |= FILE_GENERIC_READ;
- if (attribute & S_IWUSR)
- owner_allow |= FILE_GENERIC_WRITE;
- if (attribute & S_IXUSR)
- owner_allow |= FILE_GENERIC_EXECUTE;
- if (S_ISDIR (attribute)
- && (attribute & (S_IWUSR | S_IXUSR)) == (S_IWUSR | S_IXUSR))
- owner_allow |= FILE_DELETE_CHILD;
-
- /* Construct allow attribute for group. */
- DWORD group_allow = STANDARD_RIGHTS_READ
- | FILE_READ_ATTRIBUTES | FILE_READ_EA;
- if (attribute & S_IRGRP)
- group_allow |= FILE_GENERIC_READ;
- if (attribute & S_IWGRP)
- group_allow |= STANDARD_RIGHTS_WRITE | FILE_GENERIC_WRITE;
- if (attribute & S_IXGRP)
- group_allow |= FILE_GENERIC_EXECUTE;
- if (S_ISDIR (attribute)
- && (attribute & (S_IWGRP | S_IXGRP)) == (S_IWGRP | S_IXGRP)
- && !(attribute & S_ISVTX))
- group_allow |= FILE_DELETE_CHILD;
-
- /* Construct allow attribute for everyone. */
- DWORD other_allow = STANDARD_RIGHTS_READ
- | FILE_READ_ATTRIBUTES | FILE_READ_EA;
- if (attribute & S_IROTH)
- other_allow |= FILE_GENERIC_READ;
- if (attribute & S_IWOTH)
- other_allow |= STANDARD_RIGHTS_WRITE | FILE_GENERIC_WRITE;
- if (attribute & S_IXOTH)
- other_allow |= FILE_GENERIC_EXECUTE;
- if (S_ISDIR (attribute)
- && (attribute & (S_IWOTH | S_IXOTH)) == (S_IWOTH | S_IXOTH)
- && !(attribute & S_ISVTX))
- other_allow |= FILE_DELETE_CHILD;
-
- /* Construct SUID, SGID and VTX bits in NULL ACE. */
- DWORD null_allow = 0L;
- if (attribute & (S_ISUID | S_ISGID | S_ISVTX))
- {
- if (attribute & S_ISUID)
- null_allow |= FILE_APPEND_DATA;
- if (attribute & S_ISGID)
- null_allow |= FILE_WRITE_DATA;
- if (attribute & S_ISVTX)
- null_allow |= FILE_READ_DATA;
- }
-
- /* Add owner and group permissions if SIDs are equal
- and construct deny attributes for group and owner. */
- bool isownergroup;
- if ((isownergroup = (owner_sid == group_sid)))
- owner_allow |= group_allow;
-
- DWORD owner_deny = ~owner_allow & (group_allow | other_allow);
- owner_deny &= ~(STANDARD_RIGHTS_READ
- | FILE_READ_ATTRIBUTES | FILE_READ_EA
- | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA);
-
- DWORD group_deny = ~group_allow & other_allow;
- group_deny &= ~(STANDARD_RIGHTS_READ
- | FILE_READ_ATTRIBUTES | FILE_READ_EA);
-
- /* Set deny ACE for owner. */
- if (owner_deny
- && !add_access_denied_ace (acl, ace_off++, owner_deny,
- owner_sid, acl_len, NO_INHERITANCE))
- return NULL;
- /* Set deny ACE for group here to respect the canonical order,
- if this does not impact owner */
- if (group_deny && !(group_deny & owner_allow) && !isownergroup
- && !add_access_denied_ace (acl, ace_off++, group_deny,
- group_sid, acl_len, NO_INHERITANCE))
- return NULL;
- /* Set allow ACE for owner. */
- if (!add_access_allowed_ace (acl, ace_off++, owner_allow,
- owner_sid, acl_len, NO_INHERITANCE))
- return NULL;
- /* Set deny ACE for group, if still needed. */
- if (group_deny & owner_allow && !isownergroup
- && !add_access_denied_ace (acl, ace_off++, group_deny,
- group_sid, acl_len, NO_INHERITANCE))
- return NULL;
- /* Set allow ACE for group. */
- if (!isownergroup
- && !add_access_allowed_ace (acl, ace_off++, group_allow,
- group_sid, acl_len, NO_INHERITANCE))
- return NULL;
-
- /* Set allow ACE for everyone. */
- if (!add_access_allowed_ace (acl, ace_off++, other_allow,
- well_known_world_sid, acl_len, NO_INHERITANCE))
- return NULL;
- /* Set null ACE for special bits. */
- if (null_allow
- && !add_access_allowed_ace (acl, ace_off++, null_allow,
- well_known_null_sid, acl_len, NO_INHERITANCE))
- return NULL;
-
- /* Fill ACL with unrelated ACEs from current security descriptor. */
- PACL oacl;
- BOOL acl_exists = FALSE;
- ACCESS_ALLOWED_ACE *ace;
- if (GetSecurityDescriptorDacl (sd_ret, &acl_exists, &oacl, &dummy)
- && acl_exists && oacl)
- for (DWORD i = 0; i < oacl->AceCount; ++i)
- if (GetAce (oacl, i, (PVOID *) &ace))
- {
- cygpsid ace_sid ((PSID) &ace->SidStart);
-
- /* Check for related ACEs. */
- if (ace_sid == well_known_null_sid)
- continue;
- if ((ace_sid == cur_owner_sid)
- || (ace_sid == owner_sid)
- || (ace_sid == cur_group_sid)
- || (ace_sid == group_sid)
- || (ace_sid == well_known_world_sid))
- {
- if (ace->Header.AceFlags & SUB_CONTAINERS_AND_OBJECTS_INHERIT)
- ace->Header.AceFlags |= INHERIT_ONLY;
- else
- continue;
- }
- /*
- * Add unrelated ACCESS_DENIED_ACE to the beginning but
- * behind the owner_deny, ACCESS_ALLOWED_ACE to the end.
- * FIXME: this would break the order of the inherit_only ACEs
- */
- if (!AddAce (acl, ACL_REVISION,
- ace->Header.AceType == ACCESS_DENIED_ACE_TYPE?
- (owner_deny ? 1 : 0) : MAXDWORD,
- (LPVOID) ace, ace->Header.AceSize))
- {
- __seterrno ();
- return NULL;
- }
- acl_len += ace->Header.AceSize;
- }
-
- /* Construct appropriate inherit attribute for new directories */
- if (S_ISDIR (attribute) && !acl_exists)
- {
- const DWORD inherit = SUB_CONTAINERS_AND_OBJECTS_INHERIT | INHERIT_ONLY;
-
-#if 0 /* FIXME: Not done currently as this breaks the canonical order */
- /* Set deny ACE for owner. */
- if (owner_deny
- && !add_access_denied_ace (acl, ace_off++, owner_deny,
- well_known_creator_owner_sid, acl_len, inherit))
- return NULL;
- /* Set deny ACE for group here to respect the canonical order,
- if this does not impact owner */
- if (group_deny && !(group_deny & owner_allow)
- && !add_access_denied_ace (acl, ace_off++, group_deny,
- well_known_creator_group_sid, acl_len, inherit))
- return NULL;
-#endif
- /* Set allow ACE for owner. */
- if (!add_access_allowed_ace (acl, ace_off++, owner_allow,
- well_known_creator_owner_sid, acl_len, inherit))
- return NULL;
-#if 0 /* FIXME: Not done currently as this breaks the canonical order and
- won't be preserved on chown and chmod */
- /* Set deny ACE for group, conflicting with owner_allow. */
- if (group_deny & owner_allow
- && !add_access_denied_ace (acl, ace_off++, group_deny,
- well_known_creator_group_sid, acl_len, inherit))
- return NULL;
-#endif
- /* Set allow ACE for group. */
- if (!add_access_allowed_ace (acl, ace_off++, group_allow,
- well_known_creator_group_sid, acl_len, inherit))
- return NULL;
- /* Set allow ACE for everyone. */
- if (!add_access_allowed_ace (acl, ace_off++, other_allow,
- well_known_world_sid, acl_len, inherit))
- return NULL;
- }
-
- /* Set AclSize to computed value. */
- acl->AclSize = acl_len;
- debug_printf ("ACL-Size: %d", acl_len);
-
- /* Create DACL for local security descriptor. */
- if (!SetSecurityDescriptorDacl (&sd, TRUE, acl, FALSE))
- {
- __seterrno ();
- return NULL;
- }
-
- /* Make self relative security descriptor. */
- DWORD sd_size = 0;
- MakeSelfRelativeSD (&sd, sd_ret, &sd_size);
- if (sd_size <= 0)
- {
- __seterrno ();
- return NULL;
- }
- if (!sd_ret.malloc (sd_size))
- {
- set_errno (ENOMEM);
- return NULL;
- }
- if (!MakeSelfRelativeSD (&sd, sd_ret, &sd_size))
- {
- __seterrno ();
- return NULL;
- }
- debug_printf ("Created SD-Size: %u", sd_ret.size ());
-
- return sd_ret;
-}
-
-void
-set_security_attribute (int attribute, PSECURITY_ATTRIBUTES psa,
- security_descriptor &sd)
-{
- psa->lpSecurityDescriptor = sd.malloc (SECURITY_DESCRIPTOR_MIN_LENGTH);
- InitializeSecurityDescriptor ((PSECURITY_DESCRIPTOR)psa->lpSecurityDescriptor,
- SECURITY_DESCRIPTOR_REVISION);
- psa->lpSecurityDescriptor = alloc_sd (geteuid32 (), getegid32 (),
- attribute, sd);
-}
-
-static int
-set_nt_attribute (HANDLE handle, const char *file,
- __uid32_t uid, __gid32_t gid, int attribute)
-{
- if (!wincap.has_security ())
- return 0;
-
- security_descriptor sd;
-
- if ((!handle || get_nt_object_security (handle, SE_FILE_OBJECT, sd))
- && read_sd (file, sd) <= 0)
- {
- debug_printf ("read_sd %E");
- return -1;
- }
-
- if (!alloc_sd (uid, gid, attribute, sd))
- return -1;
-
- return write_sd (handle, file, sd);
-}
-
-int
-set_file_attribute (bool use_ntsec, HANDLE handle, const char *file,
- __uid32_t uid, __gid32_t gid, int attribute)
-{
- int ret = 0;
-
- if (use_ntsec && allow_ntsec)
- ret = set_nt_attribute (handle, file, uid, gid, attribute);
- else if (allow_ntea && !NTWriteEA (file, ".UNIXATTR", (char *) &attribute,
- sizeof (attribute)))
- {
- __seterrno ();
- ret = -1;
- }
- syscall_printf ("%d = set_file_attribute (%s, %d, %d, %p)",
- ret, file, uid, gid, attribute);
- return ret;
-}
-
-int
-set_file_attribute (bool use_ntsec, HANDLE handle, const char *file,
- int attribute)
-{
- return set_file_attribute (use_ntsec, handle, file,
- myself->uid, myself->gid, attribute);
-}
-
-int
-check_file_access (const char *fn, int flags)
-{
- int ret = -1;
-
- security_descriptor sd;
-
- HANDLE hToken, hIToken;
- BOOL status;
- char pbuf[sizeof (PRIVILEGE_SET) + 3 * sizeof (LUID_AND_ATTRIBUTES)];
- DWORD desired = 0, granted, plength = sizeof pbuf;
- static GENERIC_MAPPING NO_COPY mapping = { FILE_GENERIC_READ,
- FILE_GENERIC_WRITE,
- FILE_GENERIC_EXECUTE,
- FILE_ALL_ACCESS };
- if (read_sd (fn, sd) <= 0)
- goto done;
-
- if (cygheap->user.issetuid ())
- hToken = cygheap->user.token ();
- else if (!OpenProcessToken (hMainProc, TOKEN_DUPLICATE, &hToken))
- {
- __seterrno ();
- goto done;
- }
- if (!(status = DuplicateToken (hToken, SecurityIdentification, &hIToken)))
- __seterrno ();
- if (!cygheap->user.issetuid ())
- CloseHandle (hToken);
- if (!status)
- goto done;
-
- if (flags & R_OK)
- desired |= FILE_READ_DATA;
- if (flags & W_OK)
- desired |= FILE_WRITE_DATA;
- if (flags & X_OK)
- desired |= FILE_EXECUTE;
- if (!AccessCheck (sd, hIToken, desired, &mapping,
- (PPRIVILEGE_SET) pbuf, &plength, &granted, &status))
- __seterrno ();
- else if (!status)
- set_errno (EACCES);
- else
- ret = 0;
- CloseHandle (hIToken);
- done:
- debug_printf ("flags %x, ret %d", flags, ret);
- return ret;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-14 05:57:54 +0300