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gnupg/am/cmacros.am
James Bottomley 62a7854816
tpm2d: Add tpm2daemon code
* tpm2d: New directory.
* Makefile.am (SUBDIRS): Add directory.
* configure.ac: Detect libtss and decide whether to build tpm2d.
* am/cmacros.am: Add a define.
* util.h (GNUPG_MODULE_NAME_TPM2DAEMON): New.
* common/homedir.c (gnupg_module_name): Add tpm2d.
* common/mapstrings.c (macros): Add "TPM2DAEMON".
* tools/gpgconf.h (GC_COMPONENT_TPM2DAEMON): New.
* tools/gpgconf-comp.c (known_options_tpm2daemon): New.
(gc_component): Add TPM2.
(tpm2daemon_runtime_change): New.
* tpm2d/Makefile.am: New.
* tpm2d/command.c: New.
* tpm2d/ibm-tss.h: New.
* tpm2d/tpm2.c: New.
* tpm2d/tpm2.h: New.
* tpm2d/tpm2daemon.c: New.
* tpm2d/tpm2daemon.h: New.

---
This commit adds and plumbs in a tpm2daemon to the build to mirror the
operation of scdaemon.  The architecture of the code is that
tpm2daemon.c itself is pretty much a clone of scd/scdaemon.c just with
updated function prefixes (this argues there could be some further
consolidation of the daemon handling code).  Note that although this
commit causes the daemon to be built and installed, nothing actually
starts it or uses it yet.

Command handling
----------------

command.c is copied from the command handler in scd.c except that the
command implementation is now done in terms of tpm2 commands and the
wire protocol is far simpler.  The tpm2daemon only responds to 4
commands

IMPORT:    import a standard s-expression private key and export it to
           TPM2 format.  This conversion cannot be undone and the
           private key now can *only* be used by the TPM2.  To anyone
           who gets hold of the private key now, it's just an
           encrypted binary blob.

PKSIGN:    create a signature from the tpm2 key.  The TPM2 form private
           key is retrieved by KEYDATA and the hash to be signed by
           EXTRA.  Note there is no hash specifier because the tpm2
           tss deduces the hash type from the length of the EXTRA
           data.  This is actually a limitation of the tpm2 command
           API and it will be interesting to see how this fares if the
           tpm2 ever supports say sha3-256 hashes.

PKDECRYPT: decrypt (RSA case) or derive (ECC case) a symmetric key.
	   The tpm2 for private key is retrieved by KEYDATA and the
	   information used to create the symmetric key by EXTRA.

KILLTPM2D: stop the daemon

All the tpm2 primitives used by command.c are in tpm2.h and all the
tpm2 specific gunk is confined to tpm2.c, which is the only piece of
this that actually does calls into the tss library.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

Changes from James' patch:

- gpgconf: The displayed name is "TPM" and not "TPM2".  That
  string is used by GUIs and should be something the user
  understands.  For example we also use "network" instead
  of "Dirmngr".
- Removed some commented includes.
- Use 16 as emulation of GPG_ERR_SOURCE_TPM2.
- Silenced a C90 compiler warning and flags unused parameters.
- Removed "if HAVE_LIBS" from tpm2/Makefile.am and add missing
  files so that make distcheck works.

Signed-off-by: Werner Koch <wk@gnupg.org>
2021-03-10 12:33:08 +01:00

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# cmacros.am - C macro definitions
# Copyright (C) 2004 Free Software Foundation, Inc.
#
# This file is part of GnuPG.
#
# GnuPG is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# GnuPG is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <https://www.gnu.org/licenses/>.
localedir = $(datadir)/locale
# NB: AM_CFLAGS may also be used by tools running on the build
# platform to create source files.
AM_CPPFLAGS += -DLOCALEDIR=\"$(localedir)\"
if ! HAVE_DOSISH_SYSTEM
AM_CPPFLAGS += -DGNUPG_BINDIR="\"$(bindir)\"" \
-DGNUPG_LIBEXECDIR="\"$(libexecdir)\"" \
-DGNUPG_LIBDIR="\"$(libdir)/@PACKAGE@\"" \
-DGNUPG_DATADIR="\"$(datadir)/@PACKAGE@\"" \
-DGNUPG_SYSCONFDIR="\"$(sysconfdir)/@PACKAGE@\"" \
-DGNUPG_LOCALSTATEDIR="\"$(localstatedir)\""
endif
# If a specific protect tool program has been defined, pass its name
# to cc. Note that these macros should not be used directly but via
# the gnupg_module_name function.
if GNUPG_AGENT_PGM
AM_CPPFLAGS += -DGNUPG_DEFAULT_AGENT="\"@GNUPG_AGENT_PGM@\""
endif
if GNUPG_PINENTRY_PGM
AM_CPPFLAGS += -DGNUPG_DEFAULT_PINENTRY="\"@GNUPG_PINENTRY_PGM@\""
endif
if GNUPG_SCDAEMON_PGM
AM_CPPFLAGS += -DGNUPG_DEFAULT_SCDAEMON="\"@GNUPG_SCDAEMON_PGM@\""
endif
if GNUPG_TPM2DAEMON_PGM
AM_CPPFLAGS += -DGNUPG_DEFAULT_TPM2DAEMON="\"@GNUPG_TPM2DAEMON_PGM@\""
endif
if GNUPG_DIRMNGR_PGM
AM_CPPFLAGS += -DGNUPG_DEFAULT_DIRMNGR="\"@GNUPG_DIRMNGR_PGM@\""
endif
if GNUPG_PROTECT_TOOL_PGM
AM_CPPFLAGS += -DGNUPG_DEFAULT_PROTECT_TOOL="\"@GNUPG_PROTECT_TOOL_PGM@\""
endif
if GNUPG_DIRMNGR_LDAP_PGM
AM_CPPFLAGS += -DGNUPG_DEFAULT_DIRMNGR_LDAP="\"@GNUPG_DIRMNGR_LDAP_PGM@\""
endif
# Under Windows we use LockFileEx. WindowsCE provides this only on
# the WindowsMobile 6 platform and thus we need to use the coredll6
# import library. We also want to use a stacksize of 256k instead of
# the 2MB which is the default with cegcc. 256k is the largest stack
# we use with pth.
if HAVE_W32CE_SYSTEM
extra_sys_libs = -lcoredll6
extra_bin_ldflags = -Wl,--stack=0x40000
else
extra_sys_libs =
extra_bin_ldflags =
endif
if HAVE_W32_SYSTEM
.rc.o:
$(WINDRES) $(DEFAULT_INCLUDES) $(INCLUDES) "$<" "$@"
endif
resource_objs =
# Convenience macros
libcommon = ../common/libcommon.a
libcommonpth = ../common/libcommonpth.a
libcommontls = ../common/libcommontls.a
libcommontlsnpth = ../common/libcommontlsnpth.a