2001-04-20 21:02:32 +08:00
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/* sec_helper.cc: NT security helper functions
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2013-01-21 12:38:31 +08:00
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Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
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2015-03-19 00:15:27 +08:00
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2011, 2012, 2013, 2014, 2015 Red Hat, Inc.
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2001-04-20 21:02:32 +08:00
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Written by Corinna Vinschen <corinna@vinschen.de>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include <stdlib.h>
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#include <sys/acl.h>
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2008-07-11 18:00:36 +08:00
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#include <wchar.h>
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2001-04-20 21:02:32 +08:00
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#include "cygerrno.h"
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2001-07-27 03:22:24 +08:00
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#include "security.h"
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2001-04-20 21:02:32 +08:00
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#include "path.h"
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* devices.cc: New file.
* devices.gperf: New file.
* devices.shilka: New file.
* cygwin-gperf: New file.
* cygwin-shilka: New file.
* fhandler_fifo.cc: New file.
* fhandler_nodevice.cc : New file. Reorganize headers so that path.h precedes
fhandler.h throughout. Remove device argument and unit arguments from fhandler
constructors throughout. Remove pc arguments to fhandler functions and use
internal pc element instead, throughout. Use dev element in pc throughout.
Use major/minor elements rather than units and device numbers previously in
fhandler class. Use correct methods for fhandler file names rather than
directly accessing file name variables, throughout.
* Makefile.in (DLL_OFILES): Add devices.o, fhandler_fifo.o
* dcrt0.cc (dll_crt0_1): Call device::init.
* devices.h: Renumber devices based on more Linux-like major/minor numbers.
Add more devices. Declare standard device storage.
(device): Declare struct.
* dir.cc (opendir): Use new 'build_fh_name' to construct a fhandler_* type.
* dtable.cc (dtable::get_debugger_info): Ditto.
(cygwin_attach_handle_to_fd): Ditto.
(dtable::release): Remove special FH_SOCKET case in favor of generic
"need_fixup_before" test.
(dtable::init_std_file_from_handle): Use either build_fh_dev or build_fh_name
to build standard fhandler.
(dtable::build_fh_name): Renamed from dtable::build_fhandler_from_name. Move
out of dtable class. Don't accept a path_conv argument. Just build it here
and pass it to:
(build_fh_pc): Renamed from dtable::build_fhandler. Move out of dtable class.
Use intrinsic device type in path_conv to create new fhandler.
(build_fh_dev): Renamed from dtable::build_fhandler. Move out of dtable class.
Simplify arguments to just take new 'device' type and a name. Just return
pointer to fhandler rather than trying to insert into dtable.
(dtable::dup_worker): Accommodate above build_fh name changes.
(dtable::find_fifo): New (currently broken) function.
(handle_to_fn): Use strechr for efficiency.
* dtable.h: Reflect above build_fh name changes and argument differences.
(fhandler_base *&operator []): Return self rather than copy of self.
* fhandler.cc (fhandler_base::operator =): Use pc element to set normalized
path.
(fhandler_base::set_name): Ditto.
(fhandler_base::raw_read): Use method to access name.
(fhandler_base::write): Correctly use get_output_handle rather than get_handle.
(handler_base::device_access_denied): New function.
(fhandler_base::open): Eliminate pc argument and use pc element of
fhandler_base throughout.
(fhandler_base::fstat): Detect if device is based in filesystem and use
fstat_fs to calculate stat, if so.
(fhandler_base::fhandler_base): Eliminate handling of file names and, instead,
just free appropriate component from pc.
(fhandler_base::opendir): Remove path_conv parameter.
* fhandler.h: Remove all device flags.
(fhandler_base::pc): New element.
(fhandler_base::set_name): Change argument to path_conv.
(fhandler_base::error): New function.
(fhandler_base::exists): New function.
(fhandler_base::pc_binmode): New function.
(fhandler_base::dev): New function.
(fhandler_base::open_fs): New function.
(fhandler_base::fstat_fs): New function.
(fhandler_base::fstat_by_name): New function.
(fhandler_base::fstat_by_handle): New function.
(fhandler_base::isfifo): New function.
(fhandler_base::is_slow): New function.
(fhandler_base::is_auto_device): New function.
(fhandler_base::is_fs_special): New function.
(fhandler_base::device_access_denied): New function.
(fhandler_base::operator DWORD&): New operator.
(fhandler_base::get_name): Return normalized path from pc.
(fhandler_base::get_win32_name): Return windows path from pc.
(fhandler_base::isdevice): Renamed from is_device.
(fhandler_base::get_native_name): Return device format.
(fhandler_fifo): New class.
(fhandler_nodevice): New class.
(select_stuff::device_specific): Remove array.
(select_stuff::device_specific_pipe): New class element.
(select_stuff::device_specific_socket): New class element.
(select_stuff::device_specific_serial): New class element.
(select_stuff::select_stuff): Initialize new elements.
* fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Move to base class
from fhandler_disk_file.
(fhandler_base::fstat_by_name): Ditto.
(fhandler_base::fstat_by_name): Ditto.
(fhandler_disk_file::open): Move most functionality into
fhandler_base::open_fs.
(fhandler_base::open_fs): New function.
(fhandler_disk_file::close): Move most functionality into
fhandler_base::close_fs.
(fhandler_base::close_fs): New function.
* fhandler_mem.cc (fhandler_dev_mem::open): Use device name in debugging
output.
* fhandler_socket.cc (fhandler_socket::set_connect_secret): Copy standard
urandom device into appropriate place.
(fhandler_socket::accept): Reflect change in fdsock return value.
* fhandler_tty.cc: See "throughouts" above.
* net.cc: Accommodate fdsock change throughout.
(fdsock): Return success or failure, accept fd argument and device argument.
* path.cc (symlink_info::major): New element.
(symlink_info::minor): New element.
(symlink_info::parse_device): Declare new function.
(fs_info::update): Accommodate changes in path_conv class.
(path_conv::fillin): Ditto.
(path_conv::return_and_clear_normalized_path): Eliminate.
(path_conv::set_normalized_path): New function.
(path_conv::path_conv): Set info in dev element. Use path_conv methods Check
for FH_FS rather than FH_BAD to indicate when to fill in filesystem stuff.
where appropriate rather than direct access. Use set_normalized_path to set
normalized path.
(windows_device_names): Eliminate.
(get_dev): Ditto.
(get_raw_device_number): Ditto.
(get_device_number): Ditto.
(win32_device_name): Call new device name parser to do most of the heavy
lifting.
(mount_info::conv_to_win32_path): Fill in dev field as appropriate.
(symlink_worker): Handle new device files.
(symlink_info::check): Ditto.
(symlink_info::parse_device): Define new function.
* path.h (executable_states): Move here from fhandler.h.
(fs_info): Rename variables to *_storage and create methods for accessing same.
(path_conv): Add dev element, remove devn and unit and adjust inline methods to
accommodate.
(set_normalized_path): Declare new function.
* pinfo.cc (_pinfo::commune_recv): Add broken support for handling fifos.
(_pinfo::commune_send): Ditto.
* pipe.cc (fhandler_pipe::close): check for existence of handle before closing
it.
(handler_pipe::create): Rename from make_pipe. Change arguments to accept
fhandler_pipe array. Accommodate fifos.
(pipe): Rework to deal with fhandler_pipe::create changes.
(_pipe): Ditto.
* select.cc: Use individual device_specific types throughout rather than
indexing with obsolete device number.
(set_bits): Use is_socket call rather than checking device number.
* shared_info.h (CURR_MOUNT_MAGIC): Update.
(conv_to_win32_path): Reflect addition of device argument.
* syscalls.cc (mknod_worker): New function.
(open): Use build_fh_name to build fhandler.
(chown_worker): Detect if this is an 'auto' device rather than an on-filesystem
device and handle appropriately.
(chmod_device): New function.
(chmod): Detect if this is an 'auto' device rather than an on-filesystem device
and handle appropriately. Use chmod_device to set mode of in-filesystem
devices.
(stat_worker): Eliminate path_conv argument. Call build_fh_name to construct
fhandler. Use fh->error() rather than pc->error to detect errors in fhandler
construction.
(access_worker): New function pulled from access. Accommodate in-filesystem
devices.
(access): Use access_worker.
(fpathconf): Detect if this is an 'auto' device rather than an on-filesystem
device and handle appropriately.
(mknod_worker): New function.
(mknod32): New function.
(chroot): Free normalized path -- assuming it was actually cmalloced.
* tty.cc (create_tty_master): Tweak for new device class.
(tty::common_init): Ditto.
* winsup.h (stat_worker): Remove.
(symlink_worker): Declare.
* exceptions.cc (set_process_mask): Just call sig_dispatch_pending and don't
worry about pending_signals since sig_dispatch_pending should always do the
right thing now.
(sig_handle): Reorganize SIGCONT handling to more closely conform to SUSv3.
* pinfo.h: Move __SIG enum to sigproc.h.
(PICOM_FIFO): New enum element.
(_pinfo): Remove 'thread2signal' stuff throughout class.
(_pinfo::commune_send): Make varargs.
(_pinfo::sigtodo): Eliminate.
(_pinfo::thread2signal): Ditto.
* signal.cc (kill_worker): Eliminate call to setthread2signal.
* sigproc.cc (local_sigtodo): Eliminate.
(getlocal_sigtodo): Ditto.
(sigelem): New class.
(pending_signals): New class.
(sigqueue): New variable, start of sigqueue linked list.
(sigcatch_nonmain): Eliminate.
(sigcatch_main): Eliminate.
(sigcatch_nosync): Eliminate.
(sigcomplete_nonmain): Eliminate.
(pending_signals): Eliminate.
(sig_clear): Call signal thread to clear pending signals, unless already in
signal thread.
(sigpending): Call signal thread to get pending signals.
(sig_dispatch_pending): Eliminate use of pending_signals and just check
sigqueue.
(sigproc_terminate): Eliminate all of the obsolete semaphore stuff. Close
signal pipe handle.
(sig_send): Eliminate all of the obsolete semaphore stuff and use pipe to send
signals.
(getevent): Eliminate.
(pending_signals::add): New function.
(pending_signals::del): New function.
(pending_signals::next): New function.
(wait_sig): Eliminate all of the obsolete semaphore stuff. Use pipe to
communicate and maintain a linked list of signals.
* sigproc.h: Move __SIG defines here. Add __SIGPENDING.
(sig_dispatch_pending): Remove "C" specifier.
(sig_handle): Accept a mask argument.
* thread.cc: Remove signal handling considerations throughout.
2003-09-25 08:37:18 +08:00
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#include "fhandler.h"
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2001-04-20 21:02:32 +08:00
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#include "dtable.h"
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#include "pinfo.h"
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#include "cygheap.h"
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2007-07-19 16:33:22 +08:00
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#include "ntdll.h"
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2014-02-10 03:44:56 +08:00
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#include "ldap.h"
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2001-04-20 21:02:32 +08:00
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2002-07-01 22:31:28 +08:00
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/* General purpose security attribute objects for global use. */
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2013-04-23 17:44:36 +08:00
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static NO_COPY_RO SECURITY_DESCRIPTOR null_sdp =
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{ SECURITY_DESCRIPTOR_REVISION, 0, SE_DACL_PRESENT,
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NULL, NULL, NULL, NULL };
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SECURITY_ATTRIBUTES NO_COPY_RO sec_none =
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{ sizeof (SECURITY_ATTRIBUTES), NULL, TRUE };
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SECURITY_ATTRIBUTES NO_COPY_RO sec_none_nih =
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{ sizeof (SECURITY_ATTRIBUTES), NULL, FALSE };
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SECURITY_ATTRIBUTES NO_COPY_RO sec_all =
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{ sizeof (SECURITY_ATTRIBUTES), &null_sdp, TRUE };
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SECURITY_ATTRIBUTES NO_COPY_RO sec_all_nih =
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{ sizeof (SECURITY_ATTRIBUTES), &null_sdp, FALSE };
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2002-07-01 22:31:28 +08:00
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2006-11-24 00:44:55 +08:00
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MKSID (well_known_null_sid, "S-1-0-0",
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SECURITY_NULL_SID_AUTHORITY, 1, SECURITY_NULL_RID);
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MKSID (well_known_world_sid, "S-1-1-0",
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SECURITY_WORLD_SID_AUTHORITY, 1, SECURITY_WORLD_RID);
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MKSID (well_known_local_sid, "S-1-2-0",
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SECURITY_LOCAL_SID_AUTHORITY, 1, SECURITY_LOCAL_RID);
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2011-10-16 00:31:57 +08:00
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MKSID (well_known_console_logon_sid, "S-1-2-1",
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SECURITY_LOCAL_SID_AUTHORITY, 1, 1);
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2006-11-24 00:44:55 +08:00
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MKSID (well_known_creator_owner_sid, "S-1-3-0",
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SECURITY_CREATOR_SID_AUTHORITY, 1, SECURITY_CREATOR_OWNER_RID);
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MKSID (well_known_creator_group_sid, "S-1-3-1",
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SECURITY_CREATOR_SID_AUTHORITY, 1, SECURITY_CREATOR_GROUP_RID);
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MKSID (well_known_dialup_sid, "S-1-5-1",
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SECURITY_NT_AUTHORITY, 1, SECURITY_DIALUP_RID);
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MKSID (well_known_network_sid, "S-1-5-2",
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SECURITY_NT_AUTHORITY, 1, SECURITY_NETWORK_RID);
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MKSID (well_known_batch_sid, "S-1-5-3",
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SECURITY_NT_AUTHORITY, 1, SECURITY_BATCH_RID);
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MKSID (well_known_interactive_sid, "S-1-5-4",
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SECURITY_NT_AUTHORITY, 1, SECURITY_INTERACTIVE_RID);
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MKSID (well_known_service_sid, "S-1-5-6",
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SECURITY_NT_AUTHORITY, 1, SECURITY_SERVICE_RID);
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MKSID (well_known_authenticated_users_sid, "S-1-5-11",
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SECURITY_NT_AUTHORITY, 1, SECURITY_AUTHENTICATED_USER_RID);
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MKSID (well_known_this_org_sid, "S-1-5-15",
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SECURITY_NT_AUTHORITY, 1, 15);
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MKSID (well_known_system_sid, "S-1-5-18",
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SECURITY_NT_AUTHORITY, 1, SECURITY_LOCAL_SYSTEM_RID);
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2014-03-07 02:54:08 +08:00
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MKSID (well_known_local_service_sid, "S-1-5-19",
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SECURITY_NT_AUTHORITY, 1, SECURITY_LOCAL_SERVICE_RID);
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MKSID (well_known_network_service_sid, "S-1-5-20",
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SECURITY_NT_AUTHORITY, 1, SECURITY_NETWORK_SERVICE_RID);
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2010-02-13 01:40:42 +08:00
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MKSID (well_known_builtin_sid, "S-1-5-32",
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SECURITY_NT_AUTHORITY, 1, SECURITY_BUILTIN_DOMAIN_RID);
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2006-11-24 00:44:55 +08:00
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MKSID (well_known_admins_sid, "S-1-5-32-544",
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SECURITY_NT_AUTHORITY, 2, SECURITY_BUILTIN_DOMAIN_RID,
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DOMAIN_ALIAS_RID_ADMINS);
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2010-01-08 23:55:27 +08:00
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MKSID (well_known_users_sid, "S-1-5-32-545",
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SECURITY_NT_AUTHORITY, 2, SECURITY_BUILTIN_DOMAIN_RID,
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DOMAIN_ALIAS_RID_USERS);
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2014-03-07 02:54:08 +08:00
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MKSID (trusted_installer_sid,
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"S-1-5-80-956008885-3418522649-1831038044-1853292631-2271478464",
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SECURITY_NT_AUTHORITY, SECURITY_SERVICE_ID_RID_COUNT,
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SECURITY_SERVICE_ID_BASE_RID, 956008885U, 3418522649U, 1831038044U,
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1853292631U, 2271478464U);
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2008-04-22 18:45:34 +08:00
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MKSID (mandatory_medium_integrity_sid, "S-1-16-8192",
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SECURITY_MANDATORY_LABEL_AUTHORITY, 1, SECURITY_MANDATORY_MEDIUM_RID);
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MKSID (mandatory_high_integrity_sid, "S-1-16-12288",
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SECURITY_MANDATORY_LABEL_AUTHORITY, 1, SECURITY_MANDATORY_HIGH_RID);
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MKSID (mandatory_system_integrity_sid, "S-1-16-16384",
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SECURITY_MANDATORY_LABEL_AUTHORITY, 1, SECURITY_MANDATORY_SYSTEM_RID);
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2009-04-09 17:19:03 +08:00
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/* UNIX accounts on a Samba server have the SID prefix "S-1-22-1" */
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#define SECURITY_SAMBA_UNIX_AUTHORITY {0,0,0,0,0,22}
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MKSID (well_known_samba_unix_user_fake_sid, "S-1-22-1-0",
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SECURITY_SAMBA_UNIX_AUTHORITY, 2, 1, 0);
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2006-11-08 19:38:05 +08:00
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2003-02-04 22:58:04 +08:00
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bool
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cygpsid::operator== (const char *nsidstr) const
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{
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cygsid nsid (nsidstr);
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return psid == nsid;
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}
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2013-04-23 17:44:36 +08:00
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uid_t
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2014-02-27 20:57:27 +08:00
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cygpsid::get_id (BOOL search_grp, int *type, cyg_ldap *pldap)
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2003-02-04 22:58:04 +08:00
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{
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/* First try to get SID from group, then passwd */
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2013-04-23 17:44:36 +08:00
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uid_t id = ILLEGAL_UID;
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2003-02-04 22:58:04 +08:00
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if (search_grp)
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{
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2013-04-23 17:44:36 +08:00
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struct group *gr;
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2003-02-04 22:58:04 +08:00
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if (cygheap->user.groups.pgsid == psid)
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id = myself->gid;
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2015-08-18 02:24:49 +08:00
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else if (sid_id_auth (psid) == 22 && cygheap->pg.nss_grp_db ())
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2014-03-03 20:03:47 +08:00
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{
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/* Samba UNIX group. Try to map to Cygwin gid. If there's no
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mapping in the cache, try to fetch it from the configured
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RFC 2307 domain (see last comment in cygheap_domain_info::init()
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for more information) and add it to the mapping cache. */
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gid_t gid = sid_sub_auth_rid (psid);
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gid_t map_gid = cygheap->ugid_cache.get_gid (gid);
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if (map_gid == ILLEGAL_GID)
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{
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2014-06-25 17:10:50 +08:00
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if (pldap->open (cygheap->dom.get_rfc2307_domain ()) == NO_ERROR)
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2014-03-03 20:03:47 +08:00
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map_gid = pldap->remap_gid (gid);
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if (map_gid == ILLEGAL_GID)
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map_gid = MAP_UNIX_TO_CYGWIN_ID (gid);
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cygheap->ugid_cache.add_gid (gid, map_gid);
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}
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id = (uid_t) map_gid;
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}
|
2014-02-27 20:57:27 +08:00
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else if ((gr = internal_getgrsid (*this, pldap)))
|
2003-02-04 22:58:04 +08:00
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id = gr->gr_gid;
|
2014-03-03 20:03:47 +08:00
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if ((gid_t) id != ILLEGAL_GID)
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2003-03-10 04:31:07 +08:00
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{
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2003-02-04 22:58:04 +08:00
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if (type)
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*type = GROUP;
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|
|
return id;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (!search_grp || type)
|
|
|
|
|
{
|
|
|
|
|
struct passwd *pw;
|
|
|
|
|
if (*this == cygheap->user.sid ())
|
|
|
|
|
id = myself->uid;
|
2015-08-18 02:24:49 +08:00
|
|
|
else if (sid_id_auth (psid) == 22 && cygheap->pg.nss_pwd_db ())
|
2014-03-03 20:03:47 +08:00
|
|
|
{
|
|
|
|
|
/* Samba UNIX user. See comment above. */
|
|
|
|
|
uid_t uid = sid_sub_auth_rid (psid);
|
|
|
|
|
uid_t map_uid = cygheap->ugid_cache.get_uid (uid);
|
|
|
|
|
if (map_uid == ILLEGAL_UID)
|
|
|
|
|
{
|
2014-06-25 17:10:50 +08:00
|
|
|
if (pldap->open (cygheap->dom.get_rfc2307_domain ()) == NO_ERROR)
|
2014-03-03 20:03:47 +08:00
|
|
|
map_uid = pldap->remap_uid (uid);
|
|
|
|
|
if (map_uid == ILLEGAL_UID)
|
|
|
|
|
map_uid = MAP_UNIX_TO_CYGWIN_ID (uid);
|
|
|
|
|
cygheap->ugid_cache.add_uid (uid, map_uid);
|
|
|
|
|
}
|
|
|
|
|
id = map_uid;
|
|
|
|
|
}
|
2014-02-27 20:57:27 +08:00
|
|
|
else if ((pw = internal_getpwsid (*this, pldap)))
|
2003-02-04 22:58:04 +08:00
|
|
|
id = pw->pw_uid;
|
|
|
|
|
if (id != ILLEGAL_UID && type)
|
2003-03-10 04:31:07 +08:00
|
|
|
*type = USER;
|
2003-02-04 22:58:04 +08:00
|
|
|
}
|
|
|
|
|
return id;
|
|
|
|
|
}
|
|
|
|
|
|
2008-02-15 00:47:11 +08:00
|
|
|
PWCHAR
|
2014-02-10 03:44:56 +08:00
|
|
|
cygpsid::pstring (PWCHAR nsidstr) const
|
2008-02-15 00:47:11 +08:00
|
|
|
{
|
|
|
|
|
UNICODE_STRING sid;
|
|
|
|
|
|
2008-02-16 01:53:11 +08:00
|
|
|
if (!psid || !nsidstr)
|
2008-02-15 00:47:11 +08:00
|
|
|
return NULL;
|
|
|
|
|
RtlInitEmptyUnicodeString (&sid, nsidstr, 256);
|
|
|
|
|
RtlConvertSidToUnicodeString (&sid, psid, FALSE);
|
2014-02-10 03:44:56 +08:00
|
|
|
return nsidstr + sid.Length / sizeof (WCHAR);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
PWCHAR
|
|
|
|
|
cygpsid::string (PWCHAR nsidstr) const
|
|
|
|
|
{
|
|
|
|
|
if (pstring (nsidstr))
|
|
|
|
|
return nsidstr;
|
|
|
|
|
return NULL;
|
2008-02-15 00:47:11 +08:00
|
|
|
}
|
2003-02-04 22:58:04 +08:00
|
|
|
|
|
|
|
|
char *
|
2014-02-10 03:44:56 +08:00
|
|
|
cygpsid::pstring (char *nsidstr) const
|
2003-02-04 22:58:04 +08:00
|
|
|
{
|
|
|
|
|
char *t;
|
|
|
|
|
DWORD i;
|
|
|
|
|
|
|
|
|
|
if (!psid || !nsidstr)
|
|
|
|
|
return NULL;
|
|
|
|
|
strcpy (nsidstr, "S-1-");
|
|
|
|
|
t = nsidstr + sizeof ("S-1-") - 1;
|
2014-02-10 03:44:56 +08:00
|
|
|
t += __small_sprintf (t, "%u", sid_id_auth (psid));
|
2014-05-06 20:02:48 +08:00
|
|
|
for (i = 0; i < sid_sub_auth_count (psid); ++i)
|
2014-02-10 03:44:56 +08:00
|
|
|
t += __small_sprintf (t, "-%lu", sid_sub_auth (psid, i));
|
|
|
|
|
return t;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
char *
|
|
|
|
|
cygpsid::string (char *nsidstr) const
|
|
|
|
|
{
|
|
|
|
|
if (pstring (nsidstr))
|
|
|
|
|
return nsidstr;
|
|
|
|
|
return NULL;
|
2003-02-04 22:58:04 +08:00
|
|
|
}
|
|
|
|
|
|
2001-04-20 21:02:32 +08:00
|
|
|
PSID
|
2006-11-27 20:59:59 +08:00
|
|
|
cygsid::get_sid (DWORD s, DWORD cnt, DWORD *r, bool well_known)
|
2001-04-20 21:02:32 +08:00
|
|
|
{
|
|
|
|
|
DWORD i;
|
2011-04-04 17:00:02 +08:00
|
|
|
SID_IDENTIFIER_AUTHORITY sid_auth = { SECURITY_NULL_SID_AUTHORITY };
|
|
|
|
|
# define SECURITY_NT_AUTH 5
|
2001-04-20 21:02:32 +08:00
|
|
|
|
2015-10-22 21:38:42 +08:00
|
|
|
/* 2015-10-22: Note that we let slip SIDs with a subauthority count of 0.
|
|
|
|
|
There are systems, which generate the SID S-1-0 as group ownership SID,
|
|
|
|
|
see https://cygwin.com/ml/cygwin/2015-10/msg00141.html. */
|
|
|
|
|
if (s > 255 || cnt > SID_MAX_SUB_AUTHORITIES)
|
* autoload.cc: Add load statements for `LookupAccountNameW',
`LsaClose', `LsaEnumerateAccountRights', `LsaFreeMemory',
`LsaOpenPolicy', `LsaQueryInformationPolicy', `NetLocalGroupEnum',
`NetLocalGroupGetMembers', `NetServerEnum', `NetUserGetGroups' and
`NtCreateToken'.
* ntdll.h: Add declaration for `NtCreateToken'.
* sec_helper.cc: Add `well_known_local_sid', `well_known_dialup_sid',
`well_known_network_sid', `well_known_batch_sid',
`well_known_interactive_sid', `well_known_service_sid' and
`well_known_authenticated_users_sid'.
(cygsid::string): Define as const method.
(cygsid::get_sid): Set psid to NO_SID on error.
(cygsid::getfromstr): Ditto.
(cygsid::getfrompw): Simplify.
(cygsid::getfromgr): Check for gr == NULL.
(legal_sid_type): Move to security.h.
(set_process_privilege): Return -1 on error, otherwise 0 or 1 related
to previous privilege setting.
* security.cc (extract_nt_dom_user): Remove `static'.
(lsa2wchar): New function.
(open_local_policy): Ditto.
(close_local_policy): Ditto.
(get_lsa_srv_inf): Ditto.
(get_logon_server): Ditto.
(get_logon_server_and_user_domain): Ditto.
(get_user_groups): Ditto.
(is_group_member): Ditto.
(get_user_local_groups): Ditto.
(sid_in_token_groups): Ditto.
(get_user_primary_group): Ditto.
(get_group_sidlist): Ditto.
(get_system_priv_list): Ditto.
(get_priv_list): Ditto.
(get_dacl): Ditto.
(create_token): Ditto.
(subauth): Return immediately if SE_TCB_NAME can't be assigned.
Change all return statements in case of error to jumps to `out'
label. Add `out' label to support cleanup.
* security.h: Add extern declarations for `well_known_local_sid',
`well_known_dialup_sid', `well_known_network_sid',
`well_known_batch_sid', `well_known_interactive_sid',
`well_known_service_sid' and `well_known_authenticated_users_sid'.
Add extern declarations for functions `create_token',
`extract_nt_dom_user' and `get_logon_server_and_user_domain'.
(class cygsid): Add method `assign'. Change operator= to call new
`assign' method. Add `debug_print' method.
(class cygsidlist): New class.
(legal_sid_type): Moved from sec_helper.cc to here.
* spawn.cc (spawn_guts) Revert reversion of previous patch.
Call `RevertToSelf' and `ImpersonateLoggedOnUser' instead of `seteuid'
again.
* syscalls.cc (seteuid): Rearranged. Call `create_token' now when
needed. Call `subauth' if `create_token' fails. Try setting token
owner and primary group only if token was not explicitely created
by `create_token'.
* uinfo.cc (internal_getlogin): Try harder to generate correct user
information. Especially don't trust return value of `GetUserName'.
2001-05-20 16:10:47 +08:00
|
|
|
{
|
|
|
|
|
psid = NO_SID;
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
2006-11-08 19:38:05 +08:00
|
|
|
sid_auth.Value[5] = s;
|
* fork.cc (fork): Eliminate superfluous call to getuid().
* security.h: New define `NO_SID'. Remove declarations of functions
moved to methods into class cygsid.
(class cygsid): Declare new methods `getfromstr', `get_sid',
`getfrompw', `getfromgr', `get_rid', `get_uid', `get_gid', `string'
and new constructors and operators =, == and !=.
Declare new global cygsids `well_known_XXX_sid' substituting the
corresponding `get_XXX_sid' functions. Remove declarations of
these functions.
* sec_helper.cc (well_known_admin_sid): New global variable.
(well_known_system_sid): Ditto
(well_known_creator_owner_sid): Ditto
(well_known_world_sid): Ditto
(cygsid::string): New method, substituting `convert_sid_to_string_sid'.
(cygsid::get_sid): New method, substituting `get_sid'.
(cygsid::getfromstr): New method, substituting
`convert_string_sid_to_sid'.
(cygsid::getfrompw): New method, substituting `get_pw_sid'.
(cygsid::getfromgr): New method, substituting `get_gr_sid'.
(cygsid::get_id): New method, substituting `get_id_from_sid'.
(get_admin_sid): Eliminated.
(get_system_sid): Ditto.
(get_creator_owner_sid): Ditto.
(get_world_sid): Ditto.
* grp.cc: Use new cygsid methods and well known sids throughout.
* registry.cc: Ditto.
* sec_acl.cc: Ditto.
* security.cc: Ditto.
* shared.cc: Ditto.
* syscalls.cc (seteuid): Ditto. Eliminate redundant conditional.
* uinfo.cc (internal_getlogin): Ditto.
* spawn.cc (spawn_guts) Revert previous patch.
2001-05-16 03:23:31 +08:00
|
|
|
set ();
|
2011-04-28 16:34:49 +08:00
|
|
|
RtlInitializeSid (psid, &sid_auth, cnt);
|
2014-05-06 20:28:33 +08:00
|
|
|
PISID dsid = (PISID) psid;
|
2001-04-20 21:02:32 +08:00
|
|
|
for (i = 0; i < cnt; ++i)
|
2014-05-06 20:02:48 +08:00
|
|
|
dsid->SubAuthority[i] = r[i];
|
2011-04-04 17:00:02 +08:00
|
|
|
/* If the well_known flag isn't set explicitely, we check the SID
|
|
|
|
|
for being a well-known SID ourselves. That's necessary because this
|
|
|
|
|
cygsid is created from a SID string, usually from /etc/passwd or
|
|
|
|
|
/etc/group. The calling code just doesn't know if the SID is well-known
|
|
|
|
|
or not. All SIDs are well-known SIDs, except those in the non-unique NT
|
|
|
|
|
authority range. */
|
|
|
|
|
if (well_known)
|
|
|
|
|
well_known_sid = well_known;
|
|
|
|
|
else
|
|
|
|
|
well_known_sid = (s != SECURITY_NT_AUTH
|
2012-07-06 21:49:53 +08:00
|
|
|
|| r[0] != SECURITY_NT_NON_UNIQUE);
|
2001-04-20 21:02:32 +08:00
|
|
|
return psid;
|
|
|
|
|
}
|
|
|
|
|
|
2014-02-10 03:44:56 +08:00
|
|
|
const PSID
|
|
|
|
|
cygsid::getfromstr (PCWSTR nsidstr, bool well_known)
|
|
|
|
|
{
|
|
|
|
|
PWCHAR lasts;
|
|
|
|
|
DWORD s, cnt = 0;
|
2014-05-06 20:28:33 +08:00
|
|
|
DWORD r[SID_MAX_SUB_AUTHORITIES];
|
2014-02-10 03:44:56 +08:00
|
|
|
|
|
|
|
|
if (nsidstr && !wcsncmp (nsidstr, L"S-1-", 4))
|
|
|
|
|
{
|
|
|
|
|
s = wcstoul (nsidstr + 4, &lasts, 10);
|
2014-05-06 20:28:33 +08:00
|
|
|
while (cnt < SID_MAX_SUB_AUTHORITIES && *lasts == '-')
|
2014-02-10 03:44:56 +08:00
|
|
|
r[cnt++] = wcstoul (lasts + 1, &lasts, 10);
|
|
|
|
|
if (!*lasts)
|
|
|
|
|
return get_sid (s, cnt, r, well_known);
|
|
|
|
|
}
|
|
|
|
|
return psid = NO_SID;
|
|
|
|
|
}
|
|
|
|
|
|
* fork.cc (fork): Eliminate superfluous call to getuid().
* security.h: New define `NO_SID'. Remove declarations of functions
moved to methods into class cygsid.
(class cygsid): Declare new methods `getfromstr', `get_sid',
`getfrompw', `getfromgr', `get_rid', `get_uid', `get_gid', `string'
and new constructors and operators =, == and !=.
Declare new global cygsids `well_known_XXX_sid' substituting the
corresponding `get_XXX_sid' functions. Remove declarations of
these functions.
* sec_helper.cc (well_known_admin_sid): New global variable.
(well_known_system_sid): Ditto
(well_known_creator_owner_sid): Ditto
(well_known_world_sid): Ditto
(cygsid::string): New method, substituting `convert_sid_to_string_sid'.
(cygsid::get_sid): New method, substituting `get_sid'.
(cygsid::getfromstr): New method, substituting
`convert_string_sid_to_sid'.
(cygsid::getfrompw): New method, substituting `get_pw_sid'.
(cygsid::getfromgr): New method, substituting `get_gr_sid'.
(cygsid::get_id): New method, substituting `get_id_from_sid'.
(get_admin_sid): Eliminated.
(get_system_sid): Ditto.
(get_creator_owner_sid): Ditto.
(get_world_sid): Ditto.
* grp.cc: Use new cygsid methods and well known sids throughout.
* registry.cc: Ditto.
* sec_acl.cc: Ditto.
* security.cc: Ditto.
* shared.cc: Ditto.
* syscalls.cc (seteuid): Ditto. Eliminate redundant conditional.
* uinfo.cc (internal_getlogin): Ditto.
* spawn.cc (spawn_guts) Revert previous patch.
2001-05-16 03:23:31 +08:00
|
|
|
const PSID
|
2006-11-27 20:59:59 +08:00
|
|
|
cygsid::getfromstr (const char *nsidstr, bool well_known)
|
2001-04-20 21:02:32 +08:00
|
|
|
{
|
2002-11-12 23:51:11 +08:00
|
|
|
char *lasts;
|
|
|
|
|
DWORD s, cnt = 0;
|
2014-05-06 20:28:33 +08:00
|
|
|
DWORD r[SID_MAX_SUB_AUTHORITIES];
|
2001-04-20 21:02:32 +08:00
|
|
|
|
2002-11-12 23:51:11 +08:00
|
|
|
if (nsidstr && !strncmp (nsidstr, "S-1-", 4))
|
* autoload.cc: Add load statements for `LookupAccountNameW',
`LsaClose', `LsaEnumerateAccountRights', `LsaFreeMemory',
`LsaOpenPolicy', `LsaQueryInformationPolicy', `NetLocalGroupEnum',
`NetLocalGroupGetMembers', `NetServerEnum', `NetUserGetGroups' and
`NtCreateToken'.
* ntdll.h: Add declaration for `NtCreateToken'.
* sec_helper.cc: Add `well_known_local_sid', `well_known_dialup_sid',
`well_known_network_sid', `well_known_batch_sid',
`well_known_interactive_sid', `well_known_service_sid' and
`well_known_authenticated_users_sid'.
(cygsid::string): Define as const method.
(cygsid::get_sid): Set psid to NO_SID on error.
(cygsid::getfromstr): Ditto.
(cygsid::getfrompw): Simplify.
(cygsid::getfromgr): Check for gr == NULL.
(legal_sid_type): Move to security.h.
(set_process_privilege): Return -1 on error, otherwise 0 or 1 related
to previous privilege setting.
* security.cc (extract_nt_dom_user): Remove `static'.
(lsa2wchar): New function.
(open_local_policy): Ditto.
(close_local_policy): Ditto.
(get_lsa_srv_inf): Ditto.
(get_logon_server): Ditto.
(get_logon_server_and_user_domain): Ditto.
(get_user_groups): Ditto.
(is_group_member): Ditto.
(get_user_local_groups): Ditto.
(sid_in_token_groups): Ditto.
(get_user_primary_group): Ditto.
(get_group_sidlist): Ditto.
(get_system_priv_list): Ditto.
(get_priv_list): Ditto.
(get_dacl): Ditto.
(create_token): Ditto.
(subauth): Return immediately if SE_TCB_NAME can't be assigned.
Change all return statements in case of error to jumps to `out'
label. Add `out' label to support cleanup.
* security.h: Add extern declarations for `well_known_local_sid',
`well_known_dialup_sid', `well_known_network_sid',
`well_known_batch_sid', `well_known_interactive_sid',
`well_known_service_sid' and `well_known_authenticated_users_sid'.
Add extern declarations for functions `create_token',
`extract_nt_dom_user' and `get_logon_server_and_user_domain'.
(class cygsid): Add method `assign'. Change operator= to call new
`assign' method. Add `debug_print' method.
(class cygsidlist): New class.
(legal_sid_type): Moved from sec_helper.cc to here.
* spawn.cc (spawn_guts) Revert reversion of previous patch.
Call `RevertToSelf' and `ImpersonateLoggedOnUser' instead of `seteuid'
again.
* syscalls.cc (seteuid): Rearranged. Call `create_token' now when
needed. Call `subauth' if `create_token' fails. Try setting token
owner and primary group only if token was not explicitely created
by `create_token'.
* uinfo.cc (internal_getlogin): Try harder to generate correct user
information. Especially don't trust return value of `GetUserName'.
2001-05-20 16:10:47 +08:00
|
|
|
{
|
2002-11-12 23:51:11 +08:00
|
|
|
s = strtoul (nsidstr + 4, &lasts, 10);
|
2014-05-06 20:28:33 +08:00
|
|
|
while (cnt < SID_MAX_SUB_AUTHORITIES && *lasts == '-')
|
2002-11-12 23:51:11 +08:00
|
|
|
r[cnt++] = strtoul (lasts + 1, &lasts, 10);
|
|
|
|
|
if (!*lasts)
|
2006-11-27 20:59:59 +08:00
|
|
|
return get_sid (s, cnt, r, well_known);
|
* autoload.cc: Add load statements for `LookupAccountNameW',
`LsaClose', `LsaEnumerateAccountRights', `LsaFreeMemory',
`LsaOpenPolicy', `LsaQueryInformationPolicy', `NetLocalGroupEnum',
`NetLocalGroupGetMembers', `NetServerEnum', `NetUserGetGroups' and
`NtCreateToken'.
* ntdll.h: Add declaration for `NtCreateToken'.
* sec_helper.cc: Add `well_known_local_sid', `well_known_dialup_sid',
`well_known_network_sid', `well_known_batch_sid',
`well_known_interactive_sid', `well_known_service_sid' and
`well_known_authenticated_users_sid'.
(cygsid::string): Define as const method.
(cygsid::get_sid): Set psid to NO_SID on error.
(cygsid::getfromstr): Ditto.
(cygsid::getfrompw): Simplify.
(cygsid::getfromgr): Check for gr == NULL.
(legal_sid_type): Move to security.h.
(set_process_privilege): Return -1 on error, otherwise 0 or 1 related
to previous privilege setting.
* security.cc (extract_nt_dom_user): Remove `static'.
(lsa2wchar): New function.
(open_local_policy): Ditto.
(close_local_policy): Ditto.
(get_lsa_srv_inf): Ditto.
(get_logon_server): Ditto.
(get_logon_server_and_user_domain): Ditto.
(get_user_groups): Ditto.
(is_group_member): Ditto.
(get_user_local_groups): Ditto.
(sid_in_token_groups): Ditto.
(get_user_primary_group): Ditto.
(get_group_sidlist): Ditto.
(get_system_priv_list): Ditto.
(get_priv_list): Ditto.
(get_dacl): Ditto.
(create_token): Ditto.
(subauth): Return immediately if SE_TCB_NAME can't be assigned.
Change all return statements in case of error to jumps to `out'
label. Add `out' label to support cleanup.
* security.h: Add extern declarations for `well_known_local_sid',
`well_known_dialup_sid', `well_known_network_sid',
`well_known_batch_sid', `well_known_interactive_sid',
`well_known_service_sid' and `well_known_authenticated_users_sid'.
Add extern declarations for functions `create_token',
`extract_nt_dom_user' and `get_logon_server_and_user_domain'.
(class cygsid): Add method `assign'. Change operator= to call new
`assign' method. Add `debug_print' method.
(class cygsidlist): New class.
(legal_sid_type): Moved from sec_helper.cc to here.
* spawn.cc (spawn_guts) Revert reversion of previous patch.
Call `RevertToSelf' and `ImpersonateLoggedOnUser' instead of `seteuid'
again.
* syscalls.cc (seteuid): Rearranged. Call `create_token' now when
needed. Call `subauth' if `create_token' fails. Try setting token
owner and primary group only if token was not explicitely created
by `create_token'.
* uinfo.cc (internal_getlogin): Try harder to generate correct user
information. Especially don't trust return value of `GetUserName'.
2001-05-20 16:10:47 +08:00
|
|
|
}
|
2002-11-12 23:51:11 +08:00
|
|
|
return psid = NO_SID;
|
2001-04-20 21:02:32 +08:00
|
|
|
}
|
|
|
|
|
|
2006-11-27 20:59:59 +08:00
|
|
|
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;
|
|
|
|
|
cnt = maxcnt = 0;
|
|
|
|
|
type = cygsidlist_empty;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
BOOL
|
|
|
|
|
cygsidlist::add (const PSID nsi, bool well_known)
|
2007-02-20 08:16:18 +08:00
|
|
|
{
|
|
|
|
|
if (contains (nsi))
|
2006-11-27 20:59:59 +08:00
|
|
|
return TRUE;
|
|
|
|
|
if (cnt >= maxcnt)
|
|
|
|
|
{
|
|
|
|
|
cygsid *tmp = new cygsid [2 * maxcnt];
|
2007-02-20 08:16:18 +08:00
|
|
|
if (!tmp)
|
2006-11-27 20:59:59 +08:00
|
|
|
return FALSE;
|
|
|
|
|
maxcnt *= 2;
|
|
|
|
|
for (int i = 0; i < cnt; ++i)
|
|
|
|
|
tmp[i] = sids[i];
|
|
|
|
|
delete [] sids;
|
|
|
|
|
sids = tmp;
|
|
|
|
|
}
|
2007-02-20 08:16:18 +08:00
|
|
|
if (well_known)
|
2006-11-27 20:59:59 +08:00
|
|
|
sids[cnt++] *= nsi;
|
|
|
|
|
else
|
|
|
|
|
sids[cnt++] = nsi;
|
|
|
|
|
return TRUE;
|
2007-02-20 08:16:18 +08:00
|
|
|
}
|
2006-11-27 20:59:59 +08:00
|
|
|
|
2003-02-05 21:47:47 +08:00
|
|
|
bool
|
2013-04-23 17:44:36 +08:00
|
|
|
get_sids_info (cygpsid owner_sid, cygpsid group_sid, uid_t * uidret, gid_t * gidret)
|
2003-02-05 21:47:47 +08:00
|
|
|
{
|
2014-02-27 20:57:27 +08:00
|
|
|
BOOL ret = false;
|
2014-02-10 03:44:56 +08:00
|
|
|
cyg_ldap cldap;
|
2003-02-05 21:47:47 +08:00
|
|
|
|
2003-02-26 16:34:34 +08:00
|
|
|
owner_sid.debug_print ("get_sids_info: owner SID =");
|
|
|
|
|
group_sid.debug_print ("get_sids_info: group SID =");
|
|
|
|
|
|
2014-03-03 20:03:47 +08:00
|
|
|
*uidret = owner_sid.get_uid (&cldap);
|
|
|
|
|
*gidret = group_sid.get_gid (&cldap);
|
|
|
|
|
if (*uidret == myself->uid)
|
2003-02-05 21:47:47 +08:00
|
|
|
{
|
|
|
|
|
if (*gidret == myself->gid)
|
2014-02-27 20:57:27 +08:00
|
|
|
ret = TRUE;
|
2003-02-05 21:47:47 +08:00
|
|
|
else
|
2014-02-27 20:57:27 +08:00
|
|
|
CheckTokenMembership (cygheap->user.issetuid ()
|
|
|
|
|
? cygheap->user.imp_token () : NULL,
|
|
|
|
|
group_sid, &ret);
|
2003-02-05 21:47:47 +08:00
|
|
|
}
|
2014-02-27 20:57:27 +08:00
|
|
|
return (bool) ret;
|
2003-02-05 21:47:47 +08:00
|
|
|
}
|
|
|
|
|
|
2003-11-26 21:23:27 +08:00
|
|
|
PSECURITY_DESCRIPTOR
|
|
|
|
|
security_descriptor::malloc (size_t nsize)
|
|
|
|
|
{
|
2006-10-22 22:57:43 +08:00
|
|
|
free ();
|
|
|
|
|
if ((psd = (PSECURITY_DESCRIPTOR) ::malloc (nsize)))
|
2006-12-21 01:14:23 +08:00
|
|
|
sd_size = nsize;
|
2003-11-26 21:23:27 +08:00
|
|
|
return psd;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
PSECURITY_DESCRIPTOR
|
|
|
|
|
security_descriptor::realloc (size_t nsize)
|
|
|
|
|
{
|
2006-10-22 22:57:43 +08:00
|
|
|
PSECURITY_DESCRIPTOR tmp;
|
2007-02-20 08:16:18 +08:00
|
|
|
|
2009-10-31 17:31:47 +08:00
|
|
|
/* Can't re-use buffer allocated by GetSecurityInfo. */
|
|
|
|
|
if (psd && !sd_size)
|
|
|
|
|
free ();
|
2006-12-21 01:14:23 +08:00
|
|
|
if (!(tmp = (PSECURITY_DESCRIPTOR) ::realloc (psd, nsize)))
|
|
|
|
|
return NULL;
|
2003-11-26 21:23:27 +08:00
|
|
|
sd_size = nsize;
|
|
|
|
|
return psd = tmp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
2005-07-05 11:16:46 +08:00
|
|
|
security_descriptor::free ()
|
2003-11-26 21:23:27 +08:00
|
|
|
{
|
|
|
|
|
if (psd)
|
2009-10-31 03:58:53 +08:00
|
|
|
{
|
|
|
|
|
if (!sd_size)
|
|
|
|
|
LocalFree (psd);
|
|
|
|
|
else
|
|
|
|
|
::free (psd);
|
|
|
|
|
}
|
2003-11-26 21:23:27 +08:00
|
|
|
psd = NULL;
|
|
|
|
|
sd_size = 0;
|
|
|
|
|
}
|
|
|
|
|
|
2008-07-11 18:00:36 +08:00
|
|
|
#undef TEXT
|
|
|
|
|
#define TEXT(q) L##q
|
|
|
|
|
|
2011-10-16 00:31:57 +08:00
|
|
|
/* Index must match the corresponding foo_PRIVILEGE value, see security.h. */
|
|
|
|
|
static const struct {
|
|
|
|
|
const wchar_t *name;
|
2011-12-18 07:39:47 +08:00
|
|
|
bool high_integrity; /* UAC: High Mandatory Label required to
|
2011-10-16 00:31:57 +08:00
|
|
|
be allowed to enable this privilege in
|
|
|
|
|
the user token. */
|
|
|
|
|
} cygpriv[] =
|
2001-04-21 04:36:13 +08:00
|
|
|
{
|
2011-10-16 00:31:57 +08:00
|
|
|
{ L"", false },
|
|
|
|
|
{ L"", false },
|
|
|
|
|
{ SE_CREATE_TOKEN_NAME, true },
|
|
|
|
|
{ SE_ASSIGNPRIMARYTOKEN_NAME, true },
|
|
|
|
|
{ SE_LOCK_MEMORY_NAME, false },
|
|
|
|
|
{ SE_INCREASE_QUOTA_NAME, true },
|
|
|
|
|
{ SE_MACHINE_ACCOUNT_NAME, false },
|
|
|
|
|
{ SE_TCB_NAME, true },
|
|
|
|
|
{ SE_SECURITY_NAME, true },
|
|
|
|
|
{ SE_TAKE_OWNERSHIP_NAME, true },
|
|
|
|
|
{ SE_LOAD_DRIVER_NAME, true },
|
|
|
|
|
{ SE_SYSTEM_PROFILE_NAME, true },
|
|
|
|
|
{ SE_SYSTEMTIME_NAME, true },
|
|
|
|
|
{ SE_PROF_SINGLE_PROCESS_NAME, true },
|
|
|
|
|
{ SE_INC_BASE_PRIORITY_NAME, true },
|
|
|
|
|
{ SE_CREATE_PAGEFILE_NAME, true },
|
|
|
|
|
{ SE_CREATE_PERMANENT_NAME, false },
|
|
|
|
|
{ SE_BACKUP_NAME, true },
|
|
|
|
|
{ SE_RESTORE_NAME, true },
|
|
|
|
|
{ SE_SHUTDOWN_NAME, false },
|
|
|
|
|
{ SE_DEBUG_NAME, true },
|
|
|
|
|
{ SE_AUDIT_NAME, false },
|
|
|
|
|
{ SE_SYSTEM_ENVIRONMENT_NAME, true },
|
|
|
|
|
{ SE_CHANGE_NOTIFY_NAME, false },
|
|
|
|
|
{ SE_REMOTE_SHUTDOWN_NAME, true },
|
|
|
|
|
{ SE_UNDOCK_NAME, false },
|
|
|
|
|
{ SE_SYNC_AGENT_NAME, false },
|
|
|
|
|
{ SE_ENABLE_DELEGATION_NAME, false },
|
|
|
|
|
{ SE_MANAGE_VOLUME_NAME, true },
|
|
|
|
|
{ SE_IMPERSONATE_NAME, true },
|
|
|
|
|
{ SE_CREATE_GLOBAL_NAME, false },
|
|
|
|
|
{ SE_TRUSTED_CREDMAN_ACCESS_NAME, false },
|
|
|
|
|
{ SE_RELABEL_NAME, true },
|
2012-07-06 21:49:53 +08:00
|
|
|
{ SE_INC_WORKING_SET_NAME, false },
|
2011-10-16 00:31:57 +08:00
|
|
|
{ SE_TIME_ZONE_NAME, true },
|
|
|
|
|
{ SE_CREATE_SYMBOLIC_LINK_NAME, true }
|
2005-04-03 21:06:43 +08:00
|
|
|
};
|
2001-04-21 04:36:13 +08:00
|
|
|
|
2007-07-19 16:33:22 +08:00
|
|
|
bool
|
2011-10-16 00:31:57 +08:00
|
|
|
privilege_luid (const PWCHAR pname, LUID &luid, bool &high_integrity)
|
2005-04-03 21:06:43 +08:00
|
|
|
{
|
2007-07-19 16:33:22 +08:00
|
|
|
ULONG idx;
|
|
|
|
|
for (idx = SE_CREATE_TOKEN_PRIVILEGE;
|
|
|
|
|
idx <= SE_MAX_WELL_KNOWN_PRIVILEGE;
|
|
|
|
|
++idx)
|
2011-10-16 00:31:57 +08:00
|
|
|
if (!wcscmp (cygpriv[idx].name, pname))
|
2007-07-19 16:33:22 +08:00
|
|
|
{
|
2011-10-16 00:31:57 +08:00
|
|
|
luid.HighPart = 0;
|
|
|
|
|
luid.LowPart = idx;
|
|
|
|
|
high_integrity = cygpriv[idx].high_integrity;
|
2007-07-19 16:33:22 +08:00
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
return false;
|
2005-04-03 21:06:43 +08:00
|
|
|
}
|
|
|
|
|
|
2008-07-11 18:00:36 +08:00
|
|
|
static const wchar_t *
|
2007-07-19 16:33:22 +08:00
|
|
|
privilege_name (const LUID &priv_luid)
|
2005-04-03 21:06:43 +08:00
|
|
|
{
|
2007-07-19 16:33:22 +08:00
|
|
|
if (priv_luid.HighPart || priv_luid.LowPart < SE_CREATE_TOKEN_PRIVILEGE
|
|
|
|
|
|| priv_luid.LowPart > SE_MAX_WELL_KNOWN_PRIVILEGE)
|
2008-07-11 18:00:36 +08:00
|
|
|
return L"<unknown privilege>";
|
2011-10-16 00:31:57 +08:00
|
|
|
return cygpriv[priv_luid.LowPart].name;
|
2005-04-03 21:06:43 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
2007-07-19 16:33:22 +08:00
|
|
|
set_privilege (HANDLE token, DWORD privilege, bool enable)
|
2005-04-03 21:06:43 +08:00
|
|
|
{
|
|
|
|
|
int ret = -1;
|
|
|
|
|
TOKEN_PRIVILEGES new_priv, orig_priv;
|
2007-07-19 16:33:22 +08:00
|
|
|
ULONG size;
|
|
|
|
|
NTSTATUS status;
|
2001-04-21 04:36:13 +08:00
|
|
|
|
|
|
|
|
new_priv.PrivilegeCount = 1;
|
2007-07-19 16:33:22 +08:00
|
|
|
new_priv.Privileges[0].Luid.HighPart = 0L;
|
|
|
|
|
new_priv.Privileges[0].Luid.LowPart = privilege;
|
2001-04-21 04:36:13 +08:00
|
|
|
new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
|
|
|
|
|
|
2007-07-19 16:33:22 +08:00
|
|
|
status = NtAdjustPrivilegesToken (token, FALSE, &new_priv, sizeof orig_priv,
|
|
|
|
|
&orig_priv, &size);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2001-04-21 04:36:13 +08:00
|
|
|
{
|
2007-07-19 16:33:22 +08:00
|
|
|
__seterrno_from_nt_status (status);
|
2001-04-21 04:36:13 +08:00
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
2005-04-03 21:06:43 +08:00
|
|
|
/* If orig_priv.PrivilegeCount is 0, the privilege hasn't been changed. */
|
|
|
|
|
if (!orig_priv.PrivilegeCount)
|
|
|
|
|
ret = enable ? 1 : 0;
|
|
|
|
|
else
|
|
|
|
|
ret = (orig_priv.Privileges[0].Attributes & SE_PRIVILEGE_ENABLED) ? 1 : 0;
|
2001-04-21 04:36:13 +08:00
|
|
|
|
|
|
|
|
out:
|
2007-03-30 00:37:36 +08:00
|
|
|
if (ret < 0)
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("%d = set_privilege((token %p) %W, %d)", ret, token,
|
2007-07-19 16:33:22 +08:00
|
|
|
privilege_name (new_priv.Privileges[0].Luid), enable);
|
2001-04-21 04:36:13 +08:00
|
|
|
return ret;
|
|
|
|
|
}
|
2002-07-01 22:31:28 +08:00
|
|
|
|
2007-03-30 00:37:36 +08:00
|
|
|
/* This is called very early in process initialization. The code must
|
|
|
|
|
not depend on anything. */
|
2004-04-17 05:22:13 +08:00
|
|
|
void
|
2005-04-03 21:06:43 +08:00
|
|
|
set_cygwin_privileges (HANDLE token)
|
2004-04-17 05:22:13 +08:00
|
|
|
{
|
2010-04-16 01:17:59 +08:00
|
|
|
/* Setting these rights at process startup allows processes running under
|
|
|
|
|
user tokens which are in the administrstors group to have root-like
|
|
|
|
|
permissions. */
|
|
|
|
|
/* Allow to access all files, independent of their ACL settings. */
|
2007-07-19 16:33:22 +08:00
|
|
|
set_privilege (token, SE_RESTORE_PRIVILEGE, true);
|
|
|
|
|
set_privilege (token, SE_BACKUP_PRIVILEGE, true);
|
2010-04-16 01:17:59 +08:00
|
|
|
/* Allow full access to other user's processes. */
|
|
|
|
|
set_privilege (token, SE_DEBUG_PRIVILEGE, true);
|
2011-10-16 00:31:57 +08:00
|
|
|
#if 0
|
|
|
|
|
/* Allow to create global shared memory. This isn't required anymore since
|
2010-04-16 01:17:59 +08:00
|
|
|
Cygwin 1.7. It uses its own subdirectories in the global NT namespace
|
2011-10-16 00:31:57 +08:00
|
|
|
which isn't affected by the SE_CREATE_GLOBAL_PRIVILEGE restriction. */
|
2013-04-23 17:44:36 +08:00
|
|
|
set_privilege (token, SE_CREATE_GLOBAL_PRIVILEGE, true);
|
2011-10-16 00:31:57 +08:00
|
|
|
#endif
|
2004-04-17 05:22:13 +08:00
|
|
|
}
|
|
|
|
|
|
2003-12-08 06:37:12 +08:00
|
|
|
bool
|
2003-09-16 08:45:50 +08:00
|
|
|
sec_acl (PACL acl, bool original, bool admins, PSID sid1, PSID sid2, DWORD access2)
|
2002-07-01 22:31:28 +08:00
|
|
|
{
|
2011-04-28 17:30:36 +08:00
|
|
|
NTSTATUS status;
|
2010-04-17 23:51:09 +08:00
|
|
|
size_t acl_len = MAX_DACL_LEN (5);
|
2003-09-27 09:56:36 +08:00
|
|
|
LPVOID pAce;
|
2003-09-16 08:45:50 +08:00
|
|
|
cygpsid psid;
|
2002-07-01 22:31:28 +08:00
|
|
|
|
2005-06-08 03:31:42 +08:00
|
|
|
#ifdef DEBUGGING
|
|
|
|
|
if ((unsigned long) acl % 4)
|
|
|
|
|
api_fatal ("Incorrectly aligned incoming ACL buffer!");
|
|
|
|
|
#endif
|
2011-04-28 17:30:36 +08:00
|
|
|
status = RtlCreateAcl (acl, acl_len, ACL_REVISION);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2002-07-01 22:31:28 +08:00
|
|
|
{
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlCreateAcl: %y", status);
|
2003-12-08 06:37:12 +08:00
|
|
|
return false;
|
2002-07-01 22:31:28 +08:00
|
|
|
}
|
|
|
|
|
if (sid1)
|
2011-04-29 18:38:12 +08:00
|
|
|
{
|
|
|
|
|
status = RtlAddAccessAllowedAce (acl, ACL_REVISION, GENERIC_ALL, sid1);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlAddAccessAllowedAce(sid1) %y", status);
|
2011-04-29 18:38:12 +08:00
|
|
|
}
|
2003-09-16 17:24:52 +08:00
|
|
|
if (original && (psid = cygheap->user.saved_sid ())
|
2003-09-16 08:45:50 +08:00
|
|
|
&& psid != sid1 && psid != well_known_system_sid)
|
2011-04-29 18:38:12 +08:00
|
|
|
{
|
|
|
|
|
status = RtlAddAccessAllowedAce (acl, ACL_REVISION, GENERIC_ALL, psid);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlAddAccessAllowedAce(original) %y", status);
|
2011-04-29 18:38:12 +08:00
|
|
|
}
|
2003-09-16 08:45:50 +08:00
|
|
|
if (sid2)
|
2011-04-29 18:38:12 +08:00
|
|
|
{
|
|
|
|
|
status = RtlAddAccessAllowedAce (acl, ACL_REVISION, access2, sid2);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlAddAccessAllowedAce(sid2) %y", status);
|
2011-04-29 18:38:12 +08:00
|
|
|
}
|
2002-07-01 22:31:28 +08:00
|
|
|
if (admins)
|
2011-04-29 18:38:12 +08:00
|
|
|
{
|
|
|
|
|
status = RtlAddAccessAllowedAce (acl, ACL_REVISION, GENERIC_ALL,
|
|
|
|
|
well_known_admins_sid);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlAddAccessAllowedAce(admin) %y", status);
|
2011-04-29 18:38:12 +08:00
|
|
|
}
|
|
|
|
|
status = RtlAddAccessAllowedAce (acl, ACL_REVISION, GENERIC_ALL,
|
|
|
|
|
well_known_system_sid);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlAddAccessAllowedAce(system) %y", status);
|
2011-04-28 17:30:36 +08:00
|
|
|
status = RtlFirstFreeAce (acl, &pAce);
|
|
|
|
|
if (NT_SUCCESS (status) && pAce)
|
2003-09-27 09:56:36 +08:00
|
|
|
acl->AclSize = (char *) pAce - (char *) acl;
|
|
|
|
|
else
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlFirstFreeAce: %y", status);
|
2003-09-27 09:56:36 +08:00
|
|
|
|
2003-12-08 06:37:12 +08:00
|
|
|
return true;
|
2002-07-01 22:31:28 +08:00
|
|
|
}
|
|
|
|
|
|
2013-05-01 09:20:37 +08:00
|
|
|
PSECURITY_ATTRIBUTES __reg3
|
2003-09-16 08:45:50 +08:00
|
|
|
__sec_user (PVOID sa_buf, PSID sid1, PSID sid2, DWORD access2, BOOL inherit)
|
2002-07-01 22:31:28 +08:00
|
|
|
{
|
|
|
|
|
PSECURITY_ATTRIBUTES psa = (PSECURITY_ATTRIBUTES) sa_buf;
|
2012-07-06 21:49:53 +08:00
|
|
|
PISECURITY_DESCRIPTOR psd = (PISECURITY_DESCRIPTOR)
|
2002-07-01 22:31:28 +08:00
|
|
|
((char *) sa_buf + sizeof (*psa));
|
|
|
|
|
PACL acl = (PACL) ((char *) sa_buf + sizeof (*psa) + sizeof (*psd));
|
2011-04-28 23:54:47 +08:00
|
|
|
NTSTATUS status;
|
2002-07-01 22:31:28 +08:00
|
|
|
|
2005-06-08 03:31:42 +08:00
|
|
|
#ifdef DEBUGGING
|
|
|
|
|
if ((unsigned long) sa_buf % 4)
|
|
|
|
|
api_fatal ("Incorrectly aligned incoming SA buffer!");
|
|
|
|
|
#endif
|
2007-02-23 23:15:50 +08:00
|
|
|
if (!sec_acl (acl, true, true, sid1, sid2, access2))
|
2002-07-01 22:31:28 +08:00
|
|
|
return inherit ? &sec_none : &sec_none_nih;
|
|
|
|
|
|
2011-04-28 17:30:36 +08:00
|
|
|
RtlCreateSecurityDescriptor (psd, SECURITY_DESCRIPTOR_REVISION);
|
2011-04-28 23:54:47 +08:00
|
|
|
status = RtlSetDaclSecurityDescriptor (psd, TRUE, acl, FALSE);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlSetDaclSecurityDescriptor %y", status);
|
2002-07-01 22:31:28 +08:00
|
|
|
|
|
|
|
|
psa->nLength = sizeof (SECURITY_ATTRIBUTES);
|
|
|
|
|
psa->lpSecurityDescriptor = psd;
|
|
|
|
|
psa->bInheritHandle = inherit;
|
|
|
|
|
return psa;
|
|
|
|
|
}
|
2008-04-19 04:13:37 +08:00
|
|
|
|
2012-06-04 00:46:53 +08:00
|
|
|
/* Helper function to create a file security descriptor which allows
|
|
|
|
|
full access to admins, system, and the sid given as parameter. See
|
|
|
|
|
try_to_bin for how it's used. */
|
|
|
|
|
|
|
|
|
|
PSECURITY_DESCRIPTOR
|
|
|
|
|
_recycler_sd (void *buf, bool users, bool dir)
|
|
|
|
|
{
|
|
|
|
|
NTSTATUS status;
|
2012-07-06 21:49:53 +08:00
|
|
|
PISECURITY_DESCRIPTOR psd = (PISECURITY_DESCRIPTOR) buf;
|
2012-08-17 07:34:45 +08:00
|
|
|
|
2012-06-04 00:46:53 +08:00
|
|
|
if (!psd)
|
|
|
|
|
return NULL;
|
|
|
|
|
RtlCreateSecurityDescriptor (psd, SECURITY_DESCRIPTOR_REVISION);
|
|
|
|
|
PACL dacl = (PACL) (psd + 1);
|
|
|
|
|
/* Pre-Vista, the per-user recycler dir has a rather too complicated
|
|
|
|
|
ACL by default, which has distinct ACEs for inheritable and non-inheritable
|
|
|
|
|
permissions. However, this ACL is practically equivalent to the ACL
|
|
|
|
|
created since Vista. Therefore we simplify our job here and create the
|
|
|
|
|
pre-Vista permissions the same way as on Vista and later. */
|
|
|
|
|
RtlCreateAcl (dacl, MAX_DACL_LEN (3), ACL_REVISION);
|
|
|
|
|
RtlAddAccessAllowedAceEx (dacl, ACL_REVISION,
|
|
|
|
|
dir ? CONTAINER_INHERIT_ACE | OBJECT_INHERIT_ACE
|
|
|
|
|
: NO_INHERITANCE,
|
|
|
|
|
FILE_ALL_ACCESS, well_known_admins_sid);
|
|
|
|
|
RtlAddAccessAllowedAceEx (dacl, ACL_REVISION,
|
|
|
|
|
dir ? CONTAINER_INHERIT_ACE | OBJECT_INHERIT_ACE
|
|
|
|
|
: NO_INHERITANCE,
|
|
|
|
|
FILE_ALL_ACCESS, well_known_system_sid);
|
2012-08-17 07:34:45 +08:00
|
|
|
if (users)
|
2012-06-04 00:46:53 +08:00
|
|
|
RtlAddAccessAllowedAceEx (dacl, ACL_REVISION, NO_PROPAGATE_INHERIT_ACE,
|
|
|
|
|
FILE_GENERIC_READ | FILE_GENERIC_EXECUTE
|
|
|
|
|
| FILE_APPEND_DATA | FILE_WRITE_ATTRIBUTES,
|
|
|
|
|
well_known_users_sid);
|
|
|
|
|
else
|
|
|
|
|
RtlAddAccessAllowedAceEx (dacl, ACL_REVISION,
|
|
|
|
|
dir ? CONTAINER_INHERIT_ACE
|
|
|
|
|
| OBJECT_INHERIT_ACE
|
|
|
|
|
: NO_INHERITANCE,
|
|
|
|
|
FILE_ALL_ACCESS, cygheap->user.sid ());
|
|
|
|
|
LPVOID ace;
|
|
|
|
|
status = RtlFirstFreeAce (dacl, &ace);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
|
|
|
|
{
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlFirstFreeAce: %y", status);
|
2012-06-04 00:46:53 +08:00
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
dacl->AclSize = (char *) ace - (char *) dacl;
|
|
|
|
|
RtlSetDaclSecurityDescriptor (psd, TRUE, dacl, FALSE);
|
|
|
|
|
/* If the directory DACL is not marked as protected, shell32 thinks
|
|
|
|
|
the recycle dir is corrupted. As soon as Explorer accesses the
|
|
|
|
|
Recycler, the user will get a GUI dialog "The Recycle Bin on X:\
|
|
|
|
|
is corrupted. Do you want to empty the Recycle Bin for this drive?"
|
|
|
|
|
Of course we want to avoid that. */
|
|
|
|
|
if (dir)
|
|
|
|
|
psd->Control |= SE_DACL_PROTECTED;
|
|
|
|
|
return psd;
|
|
|
|
|
}
|
|
|
|
|
|
2008-04-19 04:13:37 +08:00
|
|
|
/* Helper function to create an event security descriptor which only allows
|
|
|
|
|
specific access to everyone. Only the creating process has all access
|
|
|
|
|
rights. */
|
|
|
|
|
|
|
|
|
|
PSECURITY_DESCRIPTOR
|
|
|
|
|
_everyone_sd (void *buf, ACCESS_MASK access)
|
|
|
|
|
{
|
2011-04-28 17:30:36 +08:00
|
|
|
NTSTATUS status;
|
2012-07-06 21:49:53 +08:00
|
|
|
PISECURITY_DESCRIPTOR psd = (PISECURITY_DESCRIPTOR) buf;
|
2008-04-19 04:13:37 +08:00
|
|
|
|
|
|
|
|
if (psd)
|
|
|
|
|
{
|
2011-04-28 17:30:36 +08:00
|
|
|
RtlCreateSecurityDescriptor (psd, SECURITY_DESCRIPTOR_REVISION);
|
2008-04-19 04:13:37 +08:00
|
|
|
PACL dacl = (PACL) (psd + 1);
|
2011-04-28 17:30:36 +08:00
|
|
|
RtlCreateAcl (dacl, MAX_DACL_LEN (1), ACL_REVISION);
|
2011-04-29 18:38:12 +08:00
|
|
|
status = RtlAddAccessAllowedAce (dacl, ACL_REVISION, access,
|
|
|
|
|
well_known_world_sid);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2008-04-19 04:13:37 +08:00
|
|
|
{
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlAddAccessAllowedAce: %y", status);
|
2008-04-19 04:13:37 +08:00
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
LPVOID ace;
|
2011-04-28 17:30:36 +08:00
|
|
|
status = RtlFirstFreeAce (dacl, &ace);
|
|
|
|
|
if (!NT_SUCCESS (status))
|
2008-04-19 04:13:37 +08:00
|
|
|
{
|
2013-04-23 17:44:36 +08:00
|
|
|
debug_printf ("RtlFirstFreeAce: %y", status);
|
2008-04-19 04:13:37 +08:00
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
dacl->AclSize = (char *) ace - (char *) dacl;
|
2011-04-28 23:54:47 +08:00
|
|
|
RtlSetDaclSecurityDescriptor (psd, TRUE, dacl, FALSE);
|
2008-04-19 04:13:37 +08:00
|
|
|
}
|
|
|
|
|
return psd;
|
|
|
|
|
}
|
|
|
|
|
|
