1 Possible compatibility problems with earlier versions marked with '*'.
5 Configure option --with-openssl=<dir> now works when a directory is
6 specified. Patch provided by Morten Bøgeskov.
8 New option for YAZ client, -u <auth>, that sets authentication.
10 ZOOM fix: error information only cleared for Bib-diagnostics (not
11 fatal errors, like connection failed, etc).
13 ZOOM_record_get returns ISO2709 buffer when "raw" is given.
17 Scan for ZOOM API. New object ZOOM_scanset. New functions
18 ZOOM_connection_scan, ZOOM_scanset_size, ZOOM_scanset_term and
21 New ZOOM function, ZOOM_connection_last_event, that returns type
22 of last event (such as "receive data", "send data", "apdu received",
25 New ZOOM option, schema, that specifies shema OID for retrieval.
27 New CCL feature. Qualifiers can be aliases for one or more
28 other qualifiers (if more than one is given, OR is used).
30 ZOOM uses named result sets if target supports it.
32 Two new YAZ client commands: . (dot, which sources a script of YAZ
33 client commands), and ! (to execute shell command.). Implemented
36 Working on Debian packages.
40 YAZ client enables named result sets only if target supports it.
42 *** ZOOM. Prefix for ZOOM definitions changed from Z3950_ to ZOOM_.
44 * ZOOM. Removed Z3950_connection_host. Use Z3950_connection_option_get
45 with key="host" to get same result.
47 * ZOOM. Added Z3950_record_clone and removed Z3950_resultset_get.
48 Function Z3950_resultset_record(s) returns references to records
49 "owned" by resultset. To become owner use Z3950_record_clone.
51 Function z_ext_record handles Extended Services. Thanks to
56 CCL Parser fix: ignore token comma when dealing with and-lists.
58 Documentation updates for COMSTACK.
60 * ZOOM changes. Query object renamed from Z3950_search to Z3950_query.
61 Changed prototype Z3950_records. For some functions, int parameters
62 were changed to size_t.
64 TCP/IP COMSTACK no longer uses getprotobyname to avoid memory leak
67 New MARC decode/display function, marc_display_exl, which properly rejects
68 non-ISO2709 records. YAZ client uses it.
72 Fix bug: local attribute set wasn't set correctly in PQF strings.
76 * Old Z39.50 codecs no longer supported.
78 Added ZOOM C binding. See http://zoom.z3950.org/
80 Renamed states for COMSTACKs to avoid confusion with events.
82 Implemented cs_look and proper cs_rcvconnect.
84 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
86 Configure detects POSIX threads on OpenBSD.
88 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
89 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
91 When error is returned from present handler, non-surrogate diagnostic
92 is returned in present response (and fetch handler is no longer called).
94 * Minor adjustments to pquery parser (PQF). Token characters may be
95 escaped by using backslash (C-style).
97 PQF parser allows string attribute values to be specified. For @attr,
98 non-numeric characters after the equal-sign are treated as strings
101 CCL trunction character may be defined (@truncation in file)
103 * function zget_ExtendedServicesRequest sets waitAction to
104 waitIfPossible (was wait).
106 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
109 CCL operator names may be set in field definition files (CCL_bibset).
110 See ccl/bib1 for an example.
112 Fixes in ASN.1 compiler for C++ compatibility.
114 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
115 and "op_or" to avoid conflict with C++.
117 Fixed problem with GNU readline detection on Redhat 7.0.
119 Added step-size for Scan backend handler.
121 Fixed bug that made the frontend server crash when no attribute
122 set was specified for scan.
124 Front-end server automatically switches to original working directory
125 when installed as an NT service. Previously -w had to be specified to
128 Added extended attributes for retrieval module (data1), so that data1
129 records carry d1_readXML/SGML attributes. d1_read also supports
130 null-data rules ( <tag/>)
132 On UNIX when POSIX threads are available, a separate library libyazthread
133 is created. Programmers should link with that library and the yaz library
134 when using threads. The reason for the split was that some applications
135 on Linux, such as Apache, doesn't work well when using shared objects that
138 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
139 (or any frontend server) in SSL mode by specifying ssl: followed by
140 address. Only tested on UNIX.
142 Added feature for CCL module. Virtual structure s=al or s=ol generates
143 and-list and or-list respectively instead of phrase search.
147 * Added prefix "yaz_" for the functions log_init.., log_file.. and
148 log_mask_str. This was done to avoid name conflicts with other libraries
149 (such as other PHP extensions).
151 Added raw OID member for preferred record syntax (request_format_raw)
152 and returned record syntax (output_format_raw) for backend fetch method.
154 Config file yaz-config now accepts options so that it returns specific
155 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
157 Shared library support for UNIX using GNU libtool.
159 * Modified backend interface. Request/Response struct's replaced by
160 one read/write C struct. For example bend_fetchrequest and
161 bend_fetchresult have been replaced by single bend_fetch_rr struct.
162 Every handler - even search has to be registered in bend_init
163 handler. This means that the YAZ library no longer refers to
164 external functions and it makes it possible to make the whole
165 thing a single DLL/SO.
167 Added Segment handler for backend server.
169 Added Zmbol/Zebra administrative functions to YAZ client.
171 Threaded frontend server on UNIX (when POSIX Threads are available).
172 Starting the server with option -T enables multi-threading.
176 Added configure option --enable-comp/disable-comp to control use
177 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
178 located in sub directory asn.
180 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
181 in ${exec_prefix}/bin along with the other programs yaz-client and
184 GNU automake used to maintain makefiles.
188 Changed retrieval module so that we can load records with no abstract
189 syntax defined. Tagpaths in these records are fully composed of string
192 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
196 On UNIX, the generated makefile now supports a proper 'make install'.
197 The prefix can be set via GNU configure to set the install location
198 (default is /usr/local).
200 * YAZ programs client and ztest were renamed to yaz-client and
201 yaz-ztest to avoid conflicts when users install YAZ in "standard"
202 locations, such as /usr/bin,/usr/local/bin,etc.
204 * YAZ Header files were moved from include to include/yaz. YAZ Header
205 files are referred to as include <yaz/log.h> rather than <log.h>.
206 The YAZ include path (-I ..) is therefore the same as before. Programmers
207 should update their #include statements or use -Ipath/include/yaz
208 instead. The main motivation for doing this change is that YAZ header files
209 can be installed in "standard" locations /usr/include,/usr/local/include
210 without introducing conflicts, since ALL YAZ header files are stored
211 in subdirectory yaz (under /usr/include for example).
213 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
214 rather than project/workspace files. We switched because project files
215 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
218 Changed name of logging function, logf, to yaz_log, to prevent name
219 clash with some math-log functions. The YAZ header log.h defines logf
220 to yaz_log (#define) so there should be no incompatibilities by this
223 Added bend_start/bend_stop handlers for server. These handler are
224 called on start/stop of server. For windows they are called whenever
225 a service is started/stopped.
227 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
228 a fairly small ASN.1 compiler written in Tcl. The compiler is located
229 in util/yc.tcl. The auto-generated C code structures are, in a few
230 cases, incompatible with the old decoders. There are differences in the
231 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
232 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
233 The preprocessor variable ASN_COMPILED is defined when the compiled
234 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
235 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
236 wish to use the old encoders/decoders you can specify --disable-yc
239 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
240 version so that it supports both new - and old version of DB Update
242 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
243 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
244 change. The name parameter can be set to 0 in which no name is specified
245 for the construction. The macros odr_implicit and odr_explicit sets name
246 parameter to zero for the construction involved. New macros
247 odr_implicit_tag and odr_explicit_tag are similar to the others,
248 except that a name parameter is added. For programmers' that don't use
249 ODR they probably only need to change the call to z_APDU and z_External.
251 Added access control facility by interfacing the TCP wrapper library.
252 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
253 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
254 name of the daemon and enables the access control as specified in
255 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
257 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
258 den Dool <H.M.vdnDool@kub.nl>.
260 Added reference ID parameter to most functions in server API - refer
261 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
263 Changed name of ccl library to libccl.a (was ccl.a).
265 Fixed bug in decoder for Explain (Category TargetInfo).
267 Added support for GNU readline in client. Thanks to Jacob Poulsen
268 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
270 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
271 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
272 IMPLEMENTATION! This change was made to the development version before
273 the ZIG decided to retract the amendment. If any users MUST be
274 compatible with the original Update definition, PLEASE CONTACT US, and
275 we will include a separate definition corresponding to the old Update
276 ES. Note that because of the change to the ASN.1 of the
277 TaskPackageRecordStructure we cannot define a single structure that
278 will support both versions.
280 * Added const modifier to buffer parameter for some ODR/BER encoding
281 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
282 completeWAIS, odr_dumpBER.
284 Fixed bug in client.c which caused a crash when a scanResponse didn't
285 contain positionOfTerm.
287 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
288 * will cause an error in a client if a non-YAZ target sends both a
289 * list of Scan entries and non-surrogate diagnostics.
291 Retrieval module enhancements. Tag sets may be typed in the reference
292 to it. From the .abs-file the "tagset" directive takes a third optional
293 integer type for the tag set referenced. From a .tag-file the "include"
294 directive takes a third optional type as well. The old "type" directive
295 in the tag set itself is still recognized but acts as the default type
298 Backend interface change. Individual Scan terms returned from bend_scan
299 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
300 in include/backend.h.
302 Retrieval module enhancements. Multiple tag sets and attribute sets may
303 be specified in abstract syntax specs. Revised the error/warning for
304 logging messages reported by the retrieval module when reading the
307 Object Identifier system (oid_..) changed. The API is backwards
308 compatible but the oid-routines now allocates new OID's when needed.
309 Raw OID's may be specified in oid_getvalbyname.
311 YAZ now uses GNU configure to generate Makefile(s).
313 * Minor changes in some of the member names of DeleteResultSetRequest and
314 DeleteResultSetResponse. See include/proto.h.
316 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
317 and added member 'languages' in TargetInfo (which was missing).
319 Changed the way attribute sets are handled in the retrieval
320 module. These are now cached, just like the abstract syntaxes
323 Changed YAZ so that it links with compiled ASN.1.
325 Added Explain-schema definitions and mapping routines. The following
326 Explain categories have been implemented: AttributeDetails,
327 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
329 Fixed minor bug in Windows version of Server Library.
331 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
333 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
335 Added EXTERNAL: UNIverse Resource Report (non-standard).
337 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
338 ENUMERATED and SET OF.
340 * Added 'const' to some of the char pointer arguments for the
341 functions, data1_read_node, data1_getelementbytagname,
342 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
345 Fixed bug in data1_insert_taggeddata - the last_child member of
346 parent wasn't initialised.
348 * Changed data1_read_record and data1_read_node so that the supplied
349 "SGML"-buffer is read-only. In particular the resulting data1 - tree
350 doesn't refer to any parts of the "SGML"-buffer.
352 Fixed bug in server library (Windows version of statserv_remove).
354 * Changed code so that it compiles as C++. The type definition
355 of Odr_fun which is a member of Odr_arm was changed. The result is,
356 that an explicit typecast is needed for the fun pointer when
357 using Odr_arm - as in:
358 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
360 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
362 Implemented the new structured date and time definition as approved
363 by the ZIG. Added schemaId element to the specificTag in Espec-1
364 (also approved at the last ZIG). Thanks to RVDM.
366 Added some Object identifiers (RVDM).
368 Changed the Update Extended Service (RVDM).
370 Added command "refid" to client which specifies referenceId for
371 the following requests.
373 Implemented extended service handling for server. See ztest.c
374 for an example as well as backend.h. New handlers are registerd
377 * Changed interface for sort in server.
379 Added new members to statserv_options_block. It allows a server
380 to read options from another source than just the command line. Thanks
381 to Charles Woodfield.
383 * Changed definition of Z_Triple in file prt-grs.h - member boolean
384 renamed to zboolean. Some C++ compilers complained about the name.
386 Minor changes to gils.abs. Added index 's' (sort) on title
387 and date/time-last-modified.
391 Fixed bug in server library regarding inetd mode (-i). This bug
392 was introduced by release 1.4.
396 Added sort facility in client and backend server interface.
398 Fixed problem with dependencies in Makefile(s).
400 Fixed bugs for encoders/decoders of extended services and
403 Implemented sub-tree feature for schemas. Sub-trees are
404 referenced in *.abs-files. See explain.abs for an example
405 of the use of this feature.
407 Modified bib1.att; local attributes for ANY didn't include
408 ANY itself (only affects use of the retrieval module).
410 Fixed bug in plain SGML reader in function data1_read_node:
411 tags with prefix "var" was incorrectly interpreted as variants.
413 Added feature "sub-schemas" to enable references to - and definitions
414 of - group of elements.
416 * Removed member parent from type data1_element (in data1.h).
418 Implemented function odr_nullval() that returns the value of
421 * Removed member num_children from data1_node (in data1.h).
423 Made NT service interface part of the server library. The
424 function statserv_main uses the NT service when required and
425 calls the statserv_start / statserv_close routines.
427 Routine zget_SearchRequest and zget_PresentRequest fills
428 resultSetName/Id member with "default" instead of "Default".
430 Fixed memory leak in server. Request queue member wasn't freed.
432 Fixed nmem_exit so that memory is freed.
436 Revised the CCL parser utility to be thread safe.
438 Added function, oid_ent_to_oid, to replace the function
439 oid_getoidbyent, which is not thread safe.
441 * Added nmem_init and nmem_exit to initialize and release
442 NMEM resources. Function nmem_init should be called once in the
443 initial thread before NMEM/ODR is used. statserv.c and client.c
444 have been changed accordingly. The change was necessary to make
445 NMEM thread safe. The NMEM memory pool is shared amongst threads
446 in a process. Unix-based applications will still work fine without
449 Added NT Services interface for the the Z39.50 (statserv) Server.
450 Refer to the ztest.c source on the usage.
452 Windows 95/NT port using MSVC5.0. Project files are included in the
455 * Defined new 'global' handle for the retrieval (data1) system. The
456 new handled, data1_handle, describes the state of the data1 system.
457 This handle is passed as first argument to virtually all
458 data1 related routines. The functions data1_create and data1_destroy
459 creates and destroys a data1 handle respectively.
461 Added ODR encode stream member to all backend request structures
462 init, search, scan etc. This stream should be used to allocate all
463 memory used for the response when thread safe operation is needed.
465 Changed the comstack utility, cs_addstr, to be thread safe. The
466 returned hostname string returned by the function is now part the
469 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
470 function. The cs_straddr takes a COMSTACK handle as argument, so this
471 function must be used after cs_create and before bind/connect.
472 This function is thread safe.
474 Moved test server to 'ztest' directory - generic server code still
475 in 'server' directory.
477 Made prefix query (pquery.c) utility thread safe.
479 Added new function modifier YAZ_EXPORT to 'export' public DLL
480 functions when using windows (see include/yconfig.h).
482 Added definitions to the OID database (util/oid.c) (RVDM).
484 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
486 Added call to ccl_rpn_delete in client program.
488 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
489 release of RPN structure.
491 Added support for C++, headers uses extern "C" for public definitions.
492 With input from RVDM.
494 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
495 Thanks to Ronald van der Meer (RVDM).
497 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
499 Added support for private extensions to the OID database
500 (oid_setprivateoids()). Thanks to RVDM.
502 Added optional, physical ANY (key replication)
504 Fixed null-reference problem in GRS-1 output filter.
506 Proximity operator added to Prefix Query Format (PQF).
508 In test client command "base" accepts multiple databases.
510 Fixed bug in cs_close stack that caused trouble with WINSOCK.
514 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
516 Smallish bug-fixes in the new encoders/decoders (explain).
518 Bug fixed in DeleteRequest.
520 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
522 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
524 Added SOIF syntax (using private OID for now) to retrieval module and client.
526 Added Update extended service.
528 Added SearchResult-1 additional info structure.
530 Added optional CCL (ISO8777) interpreter as separate module. Available
533 --- 1.2 1996/6/10 (1st anniversary release)
535 Added Summary record syntax. Lightly tested.
537 Added OPAC record syntax. Untested.
539 Added ResourceReport service encoders/decoders. Untested.
541 Fixed bug in z_Unit - wrong tagging on unitSystem.
543 Fixed bug in the DiagRecs decoder.
545 Added options for max PDU size and session timeout to frontend-server.
547 Added documentation of query-language parsers and other supporting utilities.
549 [frontend-server] Added Attribute set to the bend_scanrequest API.
551 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
552 surrogate diagnostics were generated.
554 [retrieval] Allow multiple local values for attribute.
556 [retrieval] Allow multiple attributes per element in .abs files. index type.
558 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
562 Minor changes, mostly specific to Zebra's requirements (retrieval)
566 Repaired bug in frontend server when running multiple listening
567 endpoints in dynamic mode.
569 z_External() now won't break if a known, ASN.1 value comes encapsulated
570 in an octet-string. The value will pass through unmodified in an Odr_oct.
572 Added a bit of code to the demo client to decode & display
573 ASN.1-structured records represented in the octet-aligned branch of
574 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
576 Added z_ext_getentbyref() to the ASN module. Doc updated.
578 * Completed the SCAN definition in the ASN module. This may break SCAN
579 code based on older YAZ-versions at compile-time. The fix is easy -
582 * Added 'displayTerm' and OtherInformation to the TermInfo structure
583 under the SCAN definition. Remember to initialize this, server-people.
585 Comstack should now support the WAIS protocol in TCP/IP mode. Note
586 that this does not extend to ODR and ASN.
588 Comstack allows insertion of established socket (primarily for
589 inetd-operation of servers). Doc updated.
591 Front-end server can now start from the inetd in TCP mode. Doc
598 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
599 the rank and record number.
601 Adjustments to the frontend server.
603 Fixed diagnostic BER dumper. It ignored the file argument.
607 Various changes to retrieval module.
609 Changed the union discriminators of the protocol files from enums to
610 ints paired with #defines.
612 *Changed oident.class to oident.oclass to avoid a reserved word in C++
615 *Changed operator in the RPN structure to 'roperator', again to avoid a
618 Fixed problems in Explain decoders/encoders.
622 Memory bug in log module fixed.
626 Occasional malloc() of 0 bytes fixed in d1_espec.c.
628 Bug in Explain DatabaseInfo module fixed.
630 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
634 The shift to v1.0 signals that we now consider the *core* functionality
635 of YAZ reasonably stable (the core being more or less equivalent to
636 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
637 tested (Explain not at all - though that will happen soonish).
639 Minor changes to code to support Windows port.
641 Various minor changes after we're getting to use GRS-1 & co. more.
643 Added Espec-1 format.
645 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
646 of the protocol and it cannot be selected when encoding (maps into 'string'
647 when decoding). Needed to talk to some servers.
649 Demo client can request simple element set names.
651 Added Diagnostic Format encoders/decoders.
653 Added simple Close handling to frontend server (no hooks for resource
654 reporting yet), and demonstration client.
656 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
660 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
661 handled incorrectly when records were requested in the searchResponse. This
662 will only affect you if you use the frontend-server.
664 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
665 Test-client will ask for and print GRS1. Ztest will return dummy records
668 Added Explain encoders/decoders to the service-level API. Untested.
670 Added Extended Services: Item Order encoders and decoders to the Service-
671 level API. Untested. We could use a recent copy of the pertinent bits
672 of the ILL protocol to add those bits.
674 Added diagnostic format 1 encoders/decoders to the service-level API.
677 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
678 odr_cons.c, which causes a more correct output.
680 Fixed handling of searchRequest in frontend server. NextResultSetPosition
681 was always set to 0 when no records were requested in the searchRequest.
683 * Added better external-handling. This shouldn't harm old code that
684 *encodes* externals. It can break code that looks for a
685 'single-ASN1-type' representation, since those types that are known
686 are now decoded immediately. Look at the SUTRS sample code in
687 seshigh.c and client.c. Documentation updated.
689 Handling of structured records in bend_fetchresponse. Length -1 marks
690 structured record, type is deduced from format field.
693 Fairly quick maintenance release to add SUTRS support.
695 Fixed handling of SUTRS records in the demonstration client.
697 * Added format field to the bend_fetchrequest and bend_fetchresponce
698 structures of the backend API (frontend server). When the record is
699 returned, the value of the format field is mapped to an OID. The
700 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
701 of the record. The special value VAL_NONE in the bend_request means
702 that no specific format was requested by the client. Documentation
703 updated accordingly. Test server (ztest) will return a fixed dummy
704 SUTRS record if your client requests SUTRS.
706 Documentation updated accordingly.
708 You can now set external libraries and RANLIB support in the top-level
712 First public release.