gpgme/NEWS
Marcus Brinkmann c476829aba doc/
2003-04-29  Marcus Brinkmann  <marcus@g10code.de>

	* gpgme.texi (Trust Item Management): Add data members of
	GpgmeTrustItem type.
	(Information About Trust Items): Add note about obsoleteness.
	(Manipulating Trust Items): Add gpgme_trust_item_ref and
	gpgme_trust_item_unref.

gpgme/
2003-04-29  Marcus Brinkmann  <marcus@g10code.de>

	* gpgme.h (struct _gpgme_trust_item): New structure.
	(GpgmeTrustItem): New type.
	(gpgme_trust_item_ref, gpgme_trust_item_unref): New prototypes.
	* context.h (struct trust_queue_item_s): Remove structure.
	(struct gpgme_context_s): Remove trust_queue member.
	* Makefile.am (libgpgme_la_SOURCES): Add trust-item.c.
	* trust-item.c: New file.
	* trustlist.c: Do not include <stdio.h> or <time.h>, but
	"gpgme.h".
	(struct trust_queue_item_s): Change to new type op_data_t.
	(trust_status_handler): Change first argument to void *.
	(trust_colon_handler): Likewise.
	(_gpgme_op_trustlist_event_cb): Use op_data_t type.
	(gpgme_op_trustlist_start): Use op_data_t and rework error
	handling.
	(gpgme_op_trustlist_next): Use op_data_t.
	(gpgme_trust_item_release): Remove function.
	(gpgme_trust_item_get_string_attr): Likewise.
	(gpgme_trust_item_get_int_attr): Likewise.

tests/
2003-04-29  Marcus Brinkmann  <marcus@g10code.de>

	* gpg/t-trustlist.c: Rewritten.
2003-04-29 21:53:58 +00:00

542 lines
21 KiB
Plaintext

Noteworthy changes in version 0.4.1 (unreleased)
------------------------------------------------
* GPGME_ATTR_IS_SECRET is not anymore representable as a string.
* gpgme_op_verify and gpgme_op_decrypt_verify don't return a status
summary anymore. Use gpgme_get_sig_status to retrieve the individual stati.
* GpgmeIOCb changed from a void function to a function returning a
GpgmeError value. However, it will always return 0, so you can
safely ignore the return value.
* A new I/O callback event GPGME_EVENT_START has been added. The new
requirement is that you must wait until this event until you are
allowed to call the I/O callback handlers previously registered for
this context operation. Calling I/O callback functions for this
context operation before the start event happened is unsafe because
it can lead to race conditions in a multi-threaded environment.
* The idle function feature has been removed. It was not precisely
defined in a multi-threaded environment and is obsoleted by the
user I/O callback functions. If you still need a simple way to
call something while waiting on one or multiple asynchronous
operations to complete, don't set the HANG flag in gpgme_wait (note
that this will return to your program more often than the idle
function did).
* gpgme_wait can return NULL even if hang is true, if an error
occurs. In that case *status contains the error code.
* gpgme_get_engine_info was radically changed. Instead an XML
string, an info structure of the new type GpgmeEngineInfo is
returned. This makes it easier and more robust to evaluate the
information in an application.
* The new function gpgme_get_protocol_name can be used to convert a
GpgmeProtocol value into a string.
* The GpgmePassphraseCb type now returns a GpgmeError value, and
returns the password string in a new parameter. The gpgme_cancel
function has been removed, just return GPGME_Canceled in the
passphrase callback directly.
* The status of a context operation is not checked anymore, so the
errors GPGME_Busy and GPGME_No_Request can not occur anymore.
* For clarity and better reusability, the error codes
GPGME_No_Recipients, GPGME_Invalid_Recipient and
GPGME_No_Passphrase have been renamed to GPGME_No_UserID,
GPGME_Invalid_UserID and GPGME_Bad_Passphrase resp.
* The FPR argument to gpgme_op_genkey was removed. Instead, use the
gpgme_op_genkey_result function to retrieve a GpgmeGenKeyResult
pointer to a structure which contains the fingerprint. This also
works with gpgme_op_genkey. The structure also provides other
information about the generated keys.
So, instead:
char *fpr;
err = gpgme_op_genkey (ctx, NULL, NULL, &fpr);
if (!err && fpr)
printf ("%s\n", fpr);
you should now do:
GpgmeGenKeyResult result;
err = gpgme_op_genkey (ctx, NULL, NULL);
if (!err)
{
result = gpgme_op_genkey_result (ctx);
if (result->fpr)
printf ("%s\n", result->fpr);
}
* The new gpgme_op_import_result function provides detailed
information about the result of an import operation in
GpgmeImportResult and GpgmeImportStatus objects. Thus, the
gpgme_op_import_ext variant is deprecated.
* The new gpgme_op_sign_result function provides detailed information
about the result of a signing operation in GpgmeSignResult,
GpgmeInvalidUserID and GpgmeNewSignature objects.
* The new gpgme_op_encrypt_result function provides detailed
information about the result of an encryption operation in
a GpgmeEncryptResult object.
* The new gpgme_op_decrypt_result function provides detailed
information about the result of an encryption operation in
a GpgmeDecryptResult object.
* The new gpgme_op_verify_result function provides detailed
information about the result of an verify operation in
a GpgmeVerifyResult object. Because of this, the GPGME_SIG_STAT_*
values, gpgme_get_sig_status, gpgme_get_sig_ulong_attr,
gpgme_get_sig_string_attr and gpgme_get_sig_key are now deprecated,
and gpgme_get_notation is removed.
* GpgmeTrustItem objects have now directly accessible data, so the
gpgme_trust_item_get_string_attr and gpgme_trust_item_get_ulong_attr
accessor functions are deprecated. Also, reference counting is
available through gpgme_trust_item_ref and gpgme_trust_item_unref
(the gpgme_trust_item_release alias for the latter is deprecated).
* Interface changes relative to the 0.4.0 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GpgmeIOCb CHANGED: Return type from void to GpgmeError.
GpgmeEventIO CHANGED: New event type (all numbers changed).
gpgme_key_get_string_attr CHANGED: Don't handle GPGME_ATTR_IS_SECRET.
gpgme_op_verify CHANGED: Drop R_STAT argument.
gpgme_op_decrypt_verify CHANGED: Drop R_STAT argument.
gpgme_wait CHANGED: Can return NULL even if hang is true.
GpgmeIdleFunc REMOVED
gpgme_register_idle REMOVED
GpgmeEngineInfo NEW
gpgme_get_engine_info CHANGED: Return info structure instead XML.
gpgme_get_protocol_name NEW
GpgmePassphraseCb CHANGED: Return error value, new argument.
gpgme_cancel REMOVED: Return error in callback directly.
GPGME_Busy DEPRECATED: Not in use.
GPGME_No_Request DEPRECATED: Not in use.
GPGME_No_Recipients DEPRECATED: Use GPGME_No_UserID.
GPGME_No_UserID NEW
GPGME_Invalid_Recipient DEPRECATED: Use GPGME_Invalid_UserID.
GPGME_Invalid_UserID NEW
GPGME_No_Passphrase DEPRECATED: Use GPGME_Bad_Passphrase.
GPGME_Bad_Passphrase NEW
gpgme_op_genkey CHANGED: FPR argument dropped.
gpgme_op_genkey_result NEW
GpgmeGenKeyResult NEW
gpgme_op_import_ext DEPRECATED: Use gpgme_op_import_result.
gpgme_op_import_result NEW
GpgmeImportStatus NEW
GpgmeImportResult NEW
GpgmePubKeyAlgo NEW
GpgmeHashAlgo NEW
GpgmeInvalidUserID NEW
GpgmeNewSignature NEW
GpgmeSignResult NEW
gpgme_op_sign_result NEW
gpgme_pubkey_algo_name NEW
gpgme_hash_algo_name NEW
GpgmeEncryptResult NEW
gpgme_op_encrypt_result NEW
GpgmeDecryptResult NEW
gpgme_op_decrypt_result NEW
GpgmeVerifyResult NEW
gpgme_op_verify_result NEW
gpgme_get_notation REMOVED: Access verify result directly instead.
gpgme_get_sig_key DEPRECATED: Use gpgme_get_key with fingerprint.
gpgme_get_sig_ulong_attr DEPRECATED: Use verify result directly.
gpgme_get_sig_string_attr DEPRECATED: Use verify result directly.
GPGME_SIG_STAT_* DEPRECATED: Use error value in sig status.
gpgme_get_sig_status DEPRECATED: Use verify result directly.
GpgmeTrustItem CHANGED: Now has user accessible data members.
gpgme_trust_item_ref NEW
gpgme_trust_item_unref NEW
gpgme_trust_item_release DEPRECATED: Use gpgme_trust_item_unref.
gpgme_trust_item_get_string_attr DEPRECATED
gpgme_trust_item_get_ulong_attr DEPRECATED
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.4.0 (2002-12-23)
------------------------------------------------
* Key generation returns the fingerprint of the generated key.
* New convenience function gpgme_get_key.
* Supports signatures of user IDs in keys via the new
GPGME_KEYLIST_MODE_SIGS keylist mode and the
gpgme_key_sig_get_string_attr and gpgme_key_sig_get_ulong_attr
interfaces. The XML info about a key also includes the signatures
if available.
* New data object interface, which is more flexible and transparent.
* Interface changes relative to the 0.3.9 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GpgmeDataReadCb NEW
GpgmeDataWriteCb NEW
GpgmeDataSeekCb NEW
GpgmeDataReleaseCb NEW
GpgmeDataCbs NEW
gpgme_data_read CHANGED: Match read() closely.
gpgme_data_write CHANGED: Match write() closely.
gpgme_data_seek NEW
gpgme_data_new_from_fd NEW
gpgme_data_new_from_stream NEW
gpgme_data_new_from_cbs NEW
gpgme_data_rewind DEPRECATED: Replaced by gpgme_data_seek().
gpgme_data_new_from_read_cb DEPRECATED: Replaced by gpgme_data_from_cbs().
gpgme_data_get_type REMOVED: No replacement.
gpgme_op_verify CHANGED: Take different data objects for
signed text and plain text.
gpgme_op_verify_start CHANGED: See gpgme_op_verify.
gpgme_check_engine REMOVED: Deprecated since 0.3.0.
gpgme_op_genkey CHANGED: New parameter FPR.
GPGME_KEYLIST_MODE_SIGS NEW
gpgme_key_sig_get_string_attr NEW
gpgme_key_sig_get_ulong_attr NEW
gpgme_get_key NEW
GPGME_ATTR_SIG_CLASS NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.3.15 (2003-02-18)
-------------------------------------------------
* The progress status is sent via the progress callbacks in
gpgme_op_edit.
* Bug fix for signing operations with explicit signer settings for
the CMS protocol.
Noteworthy changes in version 0.3.14 (2002-12-04)
-------------------------------------------------
* GPGME-Plug is now in its own package "cryptplug".
* Workaround for a setlocale problem. Fixed a segv related to not
correctly as closed marked file descriptors.
Noteworthy changes in version 0.3.13 (2002-11-20)
-------------------------------------------------
* Release due to changes in gpgmeplug.
Noteworthy changes in version 0.3.12 (2002-10-15)
-------------------------------------------------
* Fixed some bux with key listings.
* The development has been branched to clean up some API issues.
This 0.3 series will be kept for compatibility reasons; so do don't
expect new features.
Noteworthy changes in version 0.3.11 (2002-09-20)
-------------------------------------------------
* Bug fixes.
Noteworthy changes in version 0.3.10 (2002-09-02)
-------------------------------------------------
* Setting the signing keys for the CMS protocol does now work.
* The signers setting is honoured by gpgme_op_edit.
Noteworthy changes in version 0.3.9 (2002-08-21)
------------------------------------------------
* A spec file for creating RPMs has been added.
* An experimental interface to GnuPG's --edit-key functionality is
introduced, see gpgme_op_edit.
* The new gpgme_import_ext function provides a convenient access to
the number of processed keys.
* Interface changes relative to the 0.3.8 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GpgmeStatusCode NEW
GpgmeEditCb NEW
gpgme_op_edit_start NEW
gpgme_op_edit NEW
gpgme_op_import_ext NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.3.8 (2002-06-25)
------------------------------------------------
* It is possible to use an outside event loop for the I/O to the
crypto engine by setting the I/O callbacks with gpgme_set_io_cbs.
* Interface changes relative to the 0.3.6 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GpgmeIOCb NEW
GpgmeRegisterIOCb NEW
GpgmeRemoveIOCb NEW
GpgmeEventIO NEW
GpgmeEventIOCb NEW
struct GpgmeIOCbs NEW
gpgme_set_io_cbs NEW
gpgme_get_io_cbs NEW
GPGME_ATTR_ERRTOK NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.3.7 (2002-06-04)
------------------------------------------------
* GPGME_ATTR_OTRUST is implemented now.
* A first step toward thread safeness has been achieved, see the
documentation for details. Supported thread libraries are pthread
and Pth.
Noteworthy changes in version 0.3.6 (2002-05-03)
------------------------------------------------
* All error output of the gpgsm backend is send to the bit bucket.
* The signature verification functions are extended. Instead of
always returning GPGME_SIG_STATUS_GOOD, the functions new codes for
expired signatures. 2 new functions may be used to retrieve more
detailed information like the signature expiration time and a
validity information of the key without an extra key looking.
* The current passphrase callback and progress meter callback can be
retrieved with the new functions gpgme_get_passphrase_cb and
gpgme_get_progress_cb respectively.
* Interface changes relative to the 0.3.5 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gpgme_get_passphrase_cb NEW
gpgme_get_progress_cb NEW
GpgmeDataEncoding NEW
gpgme_data_set_encoding NEW
gpgme_data_get_encoding NEW
GPGME_SIG_STAT_GOOD_EXP NEW
GPGME_SIG_STAT_GOOD_EXPKEY NEW
gpgme_op_verify CHANGED: Returns more status codes.
GPGME_ATTR_SIG_STATUS NEW
gpgme_get_sig_string_attr NEW
gpgme_get_sig_ulong_attr NEW
gpgme_get_protocol NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.3.5 (2002-04-01)
------------------------------------------------
* gpgme_op_encrypt can be called with RECIPIENTS being 0. In this
case, symmetric encryption is performed. Note that this requires a
passphrase from the user.
* More information is returned for X.509 certificates.
* Interface changes relative to the 0.3.4 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gpgme_op_encrypt EXTENDED: Symmetric encryption possible
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.3.4 (2002-03-04)
------------------------------------------------
* gpgme_op_encrypt does now fail with GPGME_Invalid_Recipients if
some recipients have been invalid, whereas earlier versions
succeeded in this case. The plaintext is still encrypted for all valid
recipients, so the application might take this error as a hint that
the ciphertext is not usable for all requested recipients.
Information about invalid recipients is available with gpgme_get_op_info.
* gpgme_op_verify now allows to pass an uninitialized data object as
its plaintext argument to check for normal and cleartext
signatures. The plaintext is then returned in the data object.
* New interfaces gpgme_set_include_certs and gpgme_get_include_certs
to set and get the number of certifications to include in S/MIME
signed messages.
* New interfaces gpgme_op_encrypt_sign and gpgme_op_encrypt_sign_start
to encrypt and sign a message in a combined operation.
* New interface gpgme_op_keylist_ext_start to search for multiple patterns.
* gpgme_key_get_ulong_attr supports the GPGME_ATTR_EXPIRE attribute.
* Interface changes relative to the 0.3.3 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gpgme_op_encrypt CHANGED: Can fail with GPGME_Invalid_Recipients
gpgme_op_verify EXTENDED: Accepts uninitialized text argument
gpgme_key_get_ulong_attr EXTENDED: Supports GPGME_ATTR_EXPIRE
gpgme_set_include_certs NEW
gpgme_get_include_certs NEW
gpgme_op_encrypt_sign NEW
gpgme_op_encrypt_sign_start NEW
gpgme_op_keylist_ext_start NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.3.3 (2002-02-12)
------------------------------------------------
* Fix the Makefile in jnlib.
* Fix the test suite (hopefully). It should clean up all its state
with `make check' now.
Noteworthy changes in version 0.3.2 (2002-02-10)
------------------------------------------------
* Remove erroneous dependency on libgcrypt in jnlib.
Noteworthy changes in version 0.3.1 (2002-02-09)
------------------------------------------------
* There is a Texinfo manual documenting the API.
* The gpgme_set_keylist_mode function returns an error, and changed
its meaning. It is no longer usable to select between normal and
fast mode (newer versions of GnuPG will always be fast), but
selects between local keyring, remote keyserver, or both.
For this, two new macros are defined, GPGME_KEYLIST_MODE_LOCAL
and GPGME_KEYLIST_MODE_EXTERN. To make it possible to modify the
current setting, a fucntion gpgme_get_keylist_mode was added to
retrieve the current mode.
* gpgme_wait accepts a new argument STATUS to return the error status
of the operation on the context. Its definition is closer to
waitpid() now than before.
* The LENGTH argument to gpgme_data_new_from_filepart changed its
type from off_t to the unsigned size_t.
* The R_HD argument to the GpgmePassphraseCb type changed its type
from void* to void**.
* New interface gpgme_op_trustlist_end() to match
gpgme_op_keylist_end().
* The CryptPlug modules have been renamed to gpgme-openpgp and
gpgme-smime, and they are installed in pkglibdir by `make install'.
* An idle function can be registered with gpgme_register_idle().
* The GpgSM backend supports key generation with gpgme_op_genkey().
* Interface changes relative to the 0.3.0 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gpgme_data_new_from_filepart CHANGED: Type of LENGTH is size_t.
GpgmePassphraseCb CHANGED: Type of R_HD is void **.
gpgme_wait CHANGED: New argument STATUS.
gpgme_set_keylist_mode CHANGED: Type of return value is GpgmeError.
The function has a new meaning!
gpgme_get_keylist_mode NEW
GPGME_KEYLIST_MODE_LOCAL NEW
GPGME_KEYLIST_MODE_EXTERN NEW
gpgme_op_trustlist_next NEW
GpgmeIdleFunc NEW
gpgme_register_idle NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.3.0 (2001-12-19)
------------------------------------------------
* New interface gpgme_set_protocol() to set the protocol and thus the
crypto engine to be used by the context. Currently, the OpenPGP
and the CMS protocols are supported. They are specified by the new
preprocessor symbols GPGME_PROTOCOL_OpenPGP and GPGME_PROTOCOL_CMS.
A new context uses the OpenPGP engine by default.
* gpgme_get_engine_info() returns information for all crypto engines
compiled into the library. The XML format has changed. To
reliably get the version of a crypto engine, the <version> tag
after the appropriate <protocol> tag has to be looked for.
* New interface gpgme_engine_check_version(), obsoleting
gpgme_check_engine(). Check the version of all engines you are
supporting in your software.
* GpgmeKey lists the user ids in the order as they are returned by
GnuPG, first the primary key with index 0, then the sub-user ids.
* New operation gpgme_op_decrypt_verify() to decrypt and verify
signatures simultaneously.
* The new interface gpgme_op_keylist_end() terminates a pending
keylist operation. A keylist operation is also terminated when
gpgme_op_keylist_next() returns GPGME_EOF.
* GPGME can be compiled without GnuPG being installed (`--with-gpg=PATH'),
cross-compiled, or even compiled without support for GnuPG
(`--without-gpg').
* GPGME can be compiled with support for GpgSM (GnuPG for S/MIME,
`--with-gpgsm=PATH'). It is enabled by default if the `gpgsm' is found
in the path, but it can also be compiled without support for GpgSM
(`--without-gpgsm').
* CryptPlug modules for GPGME are included and can be enabled at
configure time (`--enable-gpgmeplug'). There is one module which
uses the GnuPG engine (`gpgmeplug') and one module which uses the
GpgSM engine (`gpgsmplug').
* Interface changes relative to the latest 0.2.x release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gpgme_key_get_as_xml CHANGED: Sub-user ids reversed in order.
gpgme_key_get_string_attr CHANGED: User ids reversed in order.
gpgme_key_get_ulong_attr CHANGED: User ids reversed in order.
gpgme_get_engine_info CHANGED: New format, extended content.
gpgme_engine_check_version NEW
gpgme_decrypt_verify_start NEW
gpgme_decrypt_verify NEW
gpgme_op_keylist_next NEW
gpgme_set_protocol NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 0.2.3 (2001-09-17)
------------------------------------------------
* New function gpgme_get_op_info which can be used to get the micalg
parameter needed for MOSS.
* New functions gpgme_get_armor and gpgme_get_textmode.
* The usual bug fixes and some minor functionality improvements.
* Added a simple encryption component for MS-Windows; however the
build procedure might have some problems.
Noteworthy changes in version 0.2.2 (2001-06-12)
------------------------------------------------
* Implemented a key cache.
* Fixed a race condition under W32 and some other bug fixes.
Noteworthy changes in version 0.2.1 (2001-04-02)
------------------------------------------------
* Changed debug output and GPGME_DEBUG variable (gpgme/debug.c)
* Handle GnuPG's new key capabilities output and support revocation
et al. attributes
* Made the W32 support more robust.
Copyright 2001, 2002 g10 Code GmbH
This file is free software; as a special exception the author gives
unlimited permission to copy and/or distribute it, with or without
modifications, as long as this notice is preserved.
This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.