changelog

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maximum record size. Similar to -k option for generic frontend
server and yaz-ztest.

More fixes for scan. Non-zero stepSize handled. OID's fixes.

Prefix query parser reports "fail" when bad attribute set is given.

Fix in MARC decoder. Proximity logging. Fix for attribute set
in scan handler for server. Patches by Shigeru Ishida.

SSL/COMSTACK updates. cs_rcvconnect completes SSL handshake. ZOOM
works with SSL.

Configure option --with-openssl=<dir> now works when a directory is
specified. Patch provided by Morten B鴊eskov.

New option for YAZ client, -u <auth>, that sets authentication.

ZOOM fix: error information was sometimes "missing", since error
was cleared/reset too when it shouldn't.

ZOOM_record_get returns ISO2709 buffer when "raw" is given.

--- 1.8.4 2002/01/04

Scan for ZOOM API. New object ZOOM_scanset. New functions
ZOOM_connection_scan, ZOOM_scanset_size, ZOOM_scanset_term and
ZOOM_scanset_destroy.

New ZOOM function, ZOOM_connection_last_event, that returns type
of last event (such as "receive data", "send data", "apdu received",
etc.

New ZOOM option, schema, that specifies schema for retrieval.

New CCL feature. Qualifiers can be aliases for one or more
other qualifiers (if more than one is given, OR is used).

ZOOM uses named result sets if target supports it.

Two new YAZ client commands: .  (dot, which sources a script of YAZ
client commands), and ! (to execute shell command.). Implemented
by Jacob Poulsen.

Working on Debian packages.

--- 1.8.3 2001/11/19

YAZ client enables named result sets only if target supports it.

*** ZOOM. Prefix for ZOOM definitions changed from Z3950_ to ZOOM_.

* ZOOM. Removed Z3950_connection_host. Use Z3950_connection_option_get
with key="host" to get same result.

* ZOOM. Added Z3950_record_clone and removed Z3950_resultset_get.
Function Z3950_resultset_record(s) returns references to records
"owned" by resultset. To become owner use Z3950_record_clone.

Function z_ext_record handles Extended Services. Thanks to
Irina Dijour.

--- 1.8.2 2001/11/12

CCL Parser fix: ignore token comma when dealing with and-lists.

Documentation updates for COMSTACK.

* ZOOM changes. Query object renamed from Z3950_search to Z3950_query.
Changed prototype Z3950_records. For some functions, int parameters
were changed to size_t.

TCP/IP COMSTACK no longer uses getprotobyname to avoid memory leak
on some Unices.

New MARC decode/display function, marc_display_exl, which properly rejects
non-ISO2709 records. YAZ client uses it.

--- 1.8.1 2001/10/29

Fix bug: local attribute set wasn't set correctly in PQF strings.

--- 1.8 2001/10/25

* Old Z39.50 codecs no longer supported. 

Added ZOOM C binding. See http://zoom.z3950.org/

Renamed states for COMSTACKs to avoid confusion with events.

Implemented cs_look and proper cs_rcvconnect.

Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.

Configure detects POSIX threads on OpenBSD.

When sort flag 'i' was specified in yaz-client the caseSensitivy flag
was set to a wrong value.  Thanks to Robert Sanderson for reporting this.

When error is returned from present handler, non-surrogate diagnostic
is returned in present response (and fetch handler is no longer called).

* Minor adjustments to pquery parser (PQF). Token characters may be
escaped by using backslash (C-style).

PQF parser allows string attribute values to be specified. For @attr,
non-numeric characters after the equal-sign are treated as strings
(e.g. @attr 9=title).

CCL trunction character may be defined (@truncation in file)

* function zget_ExtendedServicesRequest sets waitAction to
  waitIfPossible (was wait).

Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
to Matthew Carey.

CCL operator names may be set in field definition files (CCL_bibset).
See ccl/bib1 for an example.

Fixes in ASN.1 compiler for C++ compatibility.

* Renamed members "and" and "or" in struct Z_Operator to "op_and"
and "op_or" to avoid conflict with C++.

Fixed problem with GNU readline detection on Redhat 7.0.

Added step-size for Scan backend handler.

Fixed bug that made the frontend server crash when no attribute
set was specified for scan.

Front-end server automatically switches to original working directory
when installed as an NT service. Previously -w had to be specified to
make it work.

Added extended attributes for retrieval module (data1), so that data1
records carry d1_readXML/SGML attributes. d1_read also supports
null-data rules ( <tag/>)

On UNIX when POSIX threads are available, a separate library libyazthread
is created. Programmers should link with that library and the yaz library
when using threads. The reason for the split was that some applications
on Linux, such as Apache, doesn't work well when using shared objects that
relies on threads.

Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
(or any frontend server) in SSL mode by specifying ssl: followed by
address. Only tested on UNIX.

Added feature for CCL module. Virtual structure s=al or s=ol generates
and-list and or-list respectively instead of phrase search.

Added some OID's.

* Added prefix "yaz_" for the functions log_init.., log_file..  and
log_mask_str. This was done to avoid name conflicts with other libraries
(such as other PHP extensions).

Added raw OID member for preferred record syntax (request_format_raw)
and returned record syntax (output_format_raw) for backend fetch method.

Config file yaz-config now accepts options so that it returns specific
compile settings, etc. Thanks to Morten B鴊eskov <[e-mail]>

Shared library support for UNIX using GNU libtool.

* Modified backend interface. Request/Response struct's replaced by
one read/write C struct. For example bend_fetchrequest and
bend_fetchresult have been replaced by single bend_fetch_rr struct.
Every handler - even search has to be registered in bend_init
handler. This means that the YAZ library no longer refers to
external functions and it makes it possible to make the whole
thing a single DLL/SO.

Added Segment handler for backend server.

Added Zmbol/Zebra administrative functions to YAZ client.

Threaded frontend server on UNIX (when POSIX Threads are available).
Starting the server with option -T enables multi-threading.

--- 1.6 2000/03/03

Added configure option --enable-comp/disable-comp to control use
of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
located in sub directory asn.

YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
in ${exec_prefix}/bin along with the other programs yaz-client and
yaz-ztest.

GNU automake used to maintain makefiles.

Added several OID's.

Changed retrieval module so that we can load records with no abstract
syntax defined. Tagpaths in these records are fully composed of string
tags.

Implemented ISO ILL protocol. Refer to stuff in sub directory ill.

--- 1.5 1999/12/10

On UNIX, the generated makefile now supports a proper 'make install'.
The prefix can be set via GNU configure to set the install location
(default is /usr/local).

* YAZ programs client and ztest were renamed to yaz-client and
yaz-ztest to avoid conflicts when users install YAZ in "standard"
locations, such as /usr/bin,/usr/local/bin,etc.

* YAZ Header files were moved from include to include/yaz. YAZ Header
files are referred to as include <yaz/log.h> rather than <log.h>.
The YAZ include path (-I ..) is therefore the same as before. Programmers
should update their #include statements or use -Ipath/include/yaz
instead. The main motivation for doing this change is that YAZ header files
can be installed in "standard" locations /usr/include,/usr/local/include 
without introducing conflicts, since ALL YAZ header files are stored
in subdirectory yaz (under /usr/include for example).

Compilation of YAZ for WIN32 is now handled by an nmake-style makefile 
rather than project/workspace files. We switched because project files
are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
details.

Changed name of logging function, logf, to yaz_log, to prevent name
clash with some math-log functions. The YAZ header log.h defines logf
to yaz_log (#define) so there should be no incompatibilities by this
modification.

Added bend_start/bend_stop handlers for server. These handler are
called on start/stop of server. For windows they are called whenever
a service is started/stopped.

* YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
a fairly small ASN.1 compiler written in Tcl. The compiler is located
in util/yc.tcl. The auto-generated C code structures are, in a few
cases, incompatible with the old decoders. There are differences in the
following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
The preprocessor variable ASN_COMPILED is defined when the compiled
ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
wish to use the old encoders/decoders you can specify --disable-yc
for configure.

Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
version so that it supports both new - and old version of DB Update

* Added 'name' parameter to ODR encoder/decoder routines to facilitate
pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
change. The name parameter can be set to 0 in which no name is specified
for the construction. The macros odr_implicit and odr_explicit sets name
parameter to zero for the construction involved. New macros
odr_implicit_tag and odr_explicit_tag are similar to the others,
except that a name parameter is added. For programmers' that don't use
ODR they probably only need to change the call to z_APDU and z_External.

Added access control facility by interfacing the TCP wrapper library.
YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
name of the daemon and enables the access control as specified in
hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).

Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
den Dool <[e-mail]>.

Added reference ID parameter to most functions in server API - refer
to backend.h. Thanks to Hans van den Dool <[e-mail]>.

Changed name of ccl library to libccl.a (was ccl.a).

Fixed bug in decoder for Explain (Category TargetInfo).

Added support for GNU readline in client. Thanks to Jacob Poulsen
<[e-mail]>. GNU configure attempts to detect if readline is available.

* CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
IMPLEMENTATION! This change was made to the development version before
the ZIG decided to retract the amendment. If any users MUST be
compatible with the original Update definition, PLEASE CONTACT US, and
we will include a separate definition corresponding to the old Update
ES. Note that because of the change to the ASN.1 of the
TaskPackageRecordStructure we cannot define a single structure that
will support both versions.

* Added const modifier to buffer parameter for some ODR/BER encoding
routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
completeWAIS, odr_dumpBER.

Fixed bug in client.c which caused a crash when a scanResponse didn't
contain positionOfTerm.

* Fixed inconsistency in the ScanResponse/ListEntries protocol. This
* will cause an error in a client if a non-YAZ target sends both a
* list of Scan entries and non-surrogate diagnostics.

Retrieval module enhancements. Tag sets may be typed in the reference
to it. From the .abs-file the "tagset" directive takes a third optional
integer type for the tag set referenced. From a .tag-file the "include"
directive takes a third optional type as well. The old "type" directive
in the tag set itself is still recognized but acts as the default type
for the tag set.

Backend interface change. Individual Scan terms returned from bend_scan
may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
in include/backend.h.

Retrieval module enhancements. Multiple tag sets and attribute sets may
be specified in abstract syntax specs. Revised the error/warning for
logging messages reported by the retrieval module when reading the
various spec files.

Object Identifier system (oid_..) changed. The API is backwards
compatible but the oid-routines now allocates new OID's when needed.
Raw OID's may be specified in oid_getvalbyname.

YAZ now uses GNU configure to generate Makefile(s).

* Minor changes in some of the member names of DeleteResultSetRequest and
DeleteResultSetResponse. See include/proto.h.

* Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
and added member 'languages' in TargetInfo (which was missing).

Changed the way attribute sets are handled in the retrieval
module. These are now cached, just like the abstract syntaxes
(schemas).

Changed YAZ so that it links with compiled ASN.1.

Added Explain-schema definitions and mapping routines. The following
Explain categories have been implemented: AttributeDetails,
AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.

Fixed minor bug in Windows version of Server Library.

--- 1.4pl2+ 1998/4/17 (Released with Zebra)

Added Extended Services to server (backend.h). Thanks to Charles Woodfield.

Added EXTERNAL: UNIverse Resource Report (non-standard).

Implemened odr_enum and odr_set_of functions to handle ASN.1 types
ENUMERATED and SET OF.

* Added 'const' to some of the char pointer arguments for the
functions, data1_read_node, data1_getelementbytagname,
data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
data1_get_absyn.

Fixed bug in data1_insert_taggeddata - the last_child member of
parent wasn't initialised.

* Changed data1_read_record and data1_read_node so that the supplied
"SGML"-buffer is read-only. In particular the resulting data1 - tree
doesn't refer to any parts of the "SGML"-buffer.

Fixed bug in server library (Windows version of statserv_remove).