1 Possible compatibility problems with earlier versions marked with '*'.
5 New option for YAZ client, -u <auth>, that sets authentication.
7 ZOOM fix: error information only cleared for Bib-diagnostics (not
8 fatal errors, like connection failed, etc).
10 ZOOM_record_get returns ISO2709 buffer when "raw" is given.
14 Scan for ZOOM API. New object ZOOM_scanset. New functions
15 ZOOM_connection_scan, ZOOM_scanset_size, ZOOM_scanset_term and
18 New ZOOM function, ZOOM_connection_last_event, that returns type
19 of last event (such as "receive data", "send data", "apdu received",
22 New ZOOM option, schema, that specifies shema OID for retrieval.
24 New CCL feature. Qualifiers can be aliases for one or more
25 other qualifiers (if more than one is given, OR is used).
27 ZOOM uses named result sets if target supports it.
29 Two new YAZ client commands: . (dot, which sources a script of YAZ
30 client commands), and ! (to execute shell command.). Implemented
33 Working on Debian packages.
37 YAZ client enables named result sets only if target supports it.
39 *** ZOOM. Prefix for ZOOM definitions changed from Z3950_ to ZOOM_.
41 * ZOOM. Removed Z3950_connection_host. Use Z3950_connection_option_get
42 with key="host" to get same result.
44 * ZOOM. Added Z3950_record_clone and removed Z3950_resultset_get.
45 Function Z3950_resultset_record(s) returns references to records
46 "owned" by resultset. To become owner use Z3950_record_clone.
48 Function z_ext_record handles Extended Services. Thanks to
53 CCL Parser fix: ignore token comma when dealing with and-lists.
55 Documentation updates for COMSTACK.
57 * ZOOM changes. Query object renamed from Z3950_search to Z3950_query.
58 Changed prototype Z3950_records. For some functions, int parameters
59 were changed to size_t.
61 TCP/IP COMSTACK no longer uses getprotobyname to avoid memory leak
64 New MARC decode/display function, marc_display_exl, which properly rejects
65 non-ISO2709 records. YAZ client uses it.
69 Fix bug: local attribute set wasn't set correctly in PQF strings.
73 * Old Z39.50 codecs no longer supported.
75 Added ZOOM C binding. See http://zoom.z3950.org/
77 Renamed states for COMSTACKs to avoid confusion with events.
79 Implemented cs_look and proper cs_rcvconnect.
81 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
83 Configure detects POSIX threads on OpenBSD.
85 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
86 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
88 When error is returned from present handler, non-surrogate diagnostic
89 is returned in present response (and fetch handler is no longer called).
91 * Minor adjustments to pquery parser (PQF). Token characters may be
92 escaped by using backslash (C-style).
94 PQF parser allows string attribute values to be specified. For @attr,
95 non-numeric characters after the equal-sign are treated as strings
98 CCL trunction character may be defined (@truncation in file)
100 * function zget_ExtendedServicesRequest sets waitAction to
101 waitIfPossible (was wait).
103 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
106 CCL operator names may be set in field definition files (CCL_bibset).
107 See ccl/bib1 for an example.
109 Fixes in ASN.1 compiler for C++ compatibility.
111 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
112 and "op_or" to avoid conflict with C++.
114 Fixed problem with GNU readline detection on Redhat 7.0.
116 Added step-size for Scan backend handler.
118 Fixed bug that made the frontend server crash when no attribute
119 set was specified for scan.
121 Front-end server automatically switches to original working directory
122 when installed as an NT service. Previously -w had to be specified to
125 Added extended attributes for retrieval module (data1), so that data1
126 records carry d1_readXML/SGML attributes. d1_read also supports
127 null-data rules ( <tag/>)
129 On UNIX when POSIX threads are available, a separate library libyazthread
130 is created. Programmers should link with that library and the yaz library
131 when using threads. The reason for the split was that some applications
132 on Linux, such as Apache, doesn't work well when using shared objects that
135 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
136 (or any frontend server) in SSL mode by specifying ssl: followed by
137 address. Only tested on UNIX.
139 Added feature for CCL module. Virtual structure s=al or s=ol generates
140 and-list and or-list respectively instead of phrase search.
144 * Added prefix "yaz_" for the functions log_init.., log_file.. and
145 log_mask_str. This was done to avoid name conflicts with other libraries
146 (such as other PHP extensions).
148 Added raw OID member for preferred record syntax (request_format_raw)
149 and returned record syntax (output_format_raw) for backend fetch method.
151 Config file yaz-config now accepts options so that it returns specific
152 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
154 Shared library support for UNIX using GNU libtool.
156 * Modified backend interface. Request/Response struct's replaced by
157 one read/write C struct. For example bend_fetchrequest and
158 bend_fetchresult have been replaced by single bend_fetch_rr struct.
159 Every handler - even search has to be registered in bend_init
160 handler. This means that the YAZ library no longer refers to
161 external functions and it makes it possible to make the whole
162 thing a single DLL/SO.
164 Added Segment handler for backend server.
166 Added Zmbol/Zebra administrative functions to YAZ client.
168 Threaded frontend server on UNIX (when POSIX Threads are available).
169 Starting the server with option -T enables multi-threading.
173 Added configure option --enable-comp/disable-comp to control use
174 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
175 located in sub directory asn.
177 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
178 in ${exec_prefix}/bin along with the other programs yaz-client and
181 GNU automake used to maintain makefiles.
185 Changed retrieval module so that we can load records with no abstract
186 syntax defined. Tagpaths in these records are fully composed of string
189 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
193 On UNIX, the generated makefile now supports a proper 'make install'.
194 The prefix can be set via GNU configure to set the install location
195 (default is /usr/local).
197 * YAZ programs client and ztest were renamed to yaz-client and
198 yaz-ztest to avoid conflicts when users install YAZ in "standard"
199 locations, such as /usr/bin,/usr/local/bin,etc.
201 * YAZ Header files were moved from include to include/yaz. YAZ Header
202 files are referred to as include <yaz/log.h> rather than <log.h>.
203 The YAZ include path (-I ..) is therefore the same as before. Programmers
204 should update their #include statements or use -Ipath/include/yaz
205 instead. The main motivation for doing this change is that YAZ header files
206 can be installed in "standard" locations /usr/include,/usr/local/include
207 without introducing conflicts, since ALL YAZ header files are stored
208 in subdirectory yaz (under /usr/include for example).
210 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
211 rather than project/workspace files. We switched because project files
212 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
215 Changed name of logging function, logf, to yaz_log, to prevent name
216 clash with some math-log functions. The YAZ header log.h defines logf
217 to yaz_log (#define) so there should be no incompatibilities by this
220 Added bend_start/bend_stop handlers for server. These handler are
221 called on start/stop of server. For windows they are called whenever
222 a service is started/stopped.
224 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
225 a fairly small ASN.1 compiler written in Tcl. The compiler is located
226 in util/yc.tcl. The auto-generated C code structures are, in a few
227 cases, incompatible with the old decoders. There are differences in the
228 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
229 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
230 The preprocessor variable ASN_COMPILED is defined when the compiled
231 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
232 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
233 wish to use the old encoders/decoders you can specify --disable-yc
236 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
237 version so that it supports both new - and old version of DB Update
239 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
240 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
241 change. The name parameter can be set to 0 in which no name is specified
242 for the construction. The macros odr_implicit and odr_explicit sets name
243 parameter to zero for the construction involved. New macros
244 odr_implicit_tag and odr_explicit_tag are similar to the others,
245 except that a name parameter is added. For programmers' that don't use
246 ODR they probably only need to change the call to z_APDU and z_External.
248 Added access control facility by interfacing the TCP wrapper library.
249 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
250 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
251 name of the daemon and enables the access control as specified in
252 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
254 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
255 den Dool <H.M.vdnDool@kub.nl>.
257 Added reference ID parameter to most functions in server API - refer
258 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
260 Changed name of ccl library to libccl.a (was ccl.a).
262 Fixed bug in decoder for Explain (Category TargetInfo).
264 Added support for GNU readline in client. Thanks to Jacob Poulsen
265 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
267 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
268 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
269 IMPLEMENTATION! This change was made to the development version before
270 the ZIG decided to retract the amendment. If any users MUST be
271 compatible with the original Update definition, PLEASE CONTACT US, and
272 we will include a separate definition corresponding to the old Update
273 ES. Note that because of the change to the ASN.1 of the
274 TaskPackageRecordStructure we cannot define a single structure that
275 will support both versions.
277 * Added const modifier to buffer parameter for some ODR/BER encoding
278 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
279 completeWAIS, odr_dumpBER.
281 Fixed bug in client.c which caused a crash when a scanResponse didn't
282 contain positionOfTerm.
284 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
285 * will cause an error in a client if a non-YAZ target sends both a
286 * list of Scan entries and non-surrogate diagnostics.
288 Retrieval module enhancements. Tag sets may be typed in the reference
289 to it. From the .abs-file the "tagset" directive takes a third optional
290 integer type for the tag set referenced. From a .tag-file the "include"
291 directive takes a third optional type as well. The old "type" directive
292 in the tag set itself is still recognized but acts as the default type
295 Backend interface change. Individual Scan terms returned from bend_scan
296 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
297 in include/backend.h.
299 Retrieval module enhancements. Multiple tag sets and attribute sets may
300 be specified in abstract syntax specs. Revised the error/warning for
301 logging messages reported by the retrieval module when reading the
304 Object Identifier system (oid_..) changed. The API is backwards
305 compatible but the oid-routines now allocates new OID's when needed.
306 Raw OID's may be specified in oid_getvalbyname.
308 YAZ now uses GNU configure to generate Makefile(s).
310 * Minor changes in some of the member names of DeleteResultSetRequest and
311 DeleteResultSetResponse. See include/proto.h.
313 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
314 and added member 'languages' in TargetInfo (which was missing).
316 Changed the way attribute sets are handled in the retrieval
317 module. These are now cached, just like the abstract syntaxes
320 Changed YAZ so that it links with compiled ASN.1.
322 Added Explain-schema definitions and mapping routines. The following
323 Explain categories have been implemented: AttributeDetails,
324 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
326 Fixed minor bug in Windows version of Server Library.
328 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
330 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
332 Added EXTERNAL: UNIverse Resource Report (non-standard).
334 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
335 ENUMERATED and SET OF.
337 * Added 'const' to some of the char pointer arguments for the
338 functions, data1_read_node, data1_getelementbytagname,
339 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
342 Fixed bug in data1_insert_taggeddata - the last_child member of
343 parent wasn't initialised.
345 * Changed data1_read_record and data1_read_node so that the supplied
346 "SGML"-buffer is read-only. In particular the resulting data1 - tree
347 doesn't refer to any parts of the "SGML"-buffer.
349 Fixed bug in server library (Windows version of statserv_remove).
351 * Changed code so that it compiles as C++. The type definition
352 of Odr_fun which is a member of Odr_arm was changed. The result is,
353 that an explicit typecast is needed for the fun pointer when
354 using Odr_arm - as in:
355 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
357 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
359 Implemented the new structured date and time definition as approved
360 by the ZIG. Added schemaId element to the specificTag in Espec-1
361 (also approved at the last ZIG). Thanks to RVDM.
363 Added some Object identifiers (RVDM).
365 Changed the Update Extended Service (RVDM).
367 Added command "refid" to client which specifies referenceId for
368 the following requests.
370 Implemented extended service handling for server. See ztest.c
371 for an example as well as backend.h. New handlers are registerd
374 * Changed interface for sort in server.
376 Added new members to statserv_options_block. It allows a server
377 to read options from another source than just the command line. Thanks
378 to Charles Woodfield.
380 * Changed definition of Z_Triple in file prt-grs.h - member boolean
381 renamed to zboolean. Some C++ compilers complained about the name.
383 Minor changes to gils.abs. Added index 's' (sort) on title
384 and date/time-last-modified.
388 Fixed bug in server library regarding inetd mode (-i). This bug
389 was introduced by release 1.4.
393 Added sort facility in client and backend server interface.
395 Fixed problem with dependencies in Makefile(s).
397 Fixed bugs for encoders/decoders of extended services and
400 Implemented sub-tree feature for schemas. Sub-trees are
401 referenced in *.abs-files. See explain.abs for an example
402 of the use of this feature.
404 Modified bib1.att; local attributes for ANY didn't include
405 ANY itself (only affects use of the retrieval module).
407 Fixed bug in plain SGML reader in function data1_read_node:
408 tags with prefix "var" was incorrectly interpreted as variants.
410 Added feature "sub-schemas" to enable references to - and definitions
411 of - group of elements.
413 * Removed member parent from type data1_element (in data1.h).
415 Implemented function odr_nullval() that returns the value of
418 * Removed member num_children from data1_node (in data1.h).
420 Made NT service interface part of the server library. The
421 function statserv_main uses the NT service when required and
422 calls the statserv_start / statserv_close routines.
424 Routine zget_SearchRequest and zget_PresentRequest fills
425 resultSetName/Id member with "default" instead of "Default".
427 Fixed memory leak in server. Request queue member wasn't freed.
429 Fixed nmem_exit so that memory is freed.
433 Revised the CCL parser utility to be thread safe.
435 Added function, oid_ent_to_oid, to replace the function
436 oid_getoidbyent, which is not thread safe.
438 * Added nmem_init and nmem_exit to initialize and release
439 NMEM resources. Function nmem_init should be called once in the
440 initial thread before NMEM/ODR is used. statserv.c and client.c
441 have been changed accordingly. The change was necessary to make
442 NMEM thread safe. The NMEM memory pool is shared amongst threads
443 in a process. Unix-based applications will still work fine without
446 Added NT Services interface for the the Z39.50 (statserv) Server.
447 Refer to the ztest.c source on the usage.
449 Windows 95/NT port using MSVC5.0. Project files are included in the
452 * Defined new 'global' handle for the retrieval (data1) system. The
453 new handled, data1_handle, describes the state of the data1 system.
454 This handle is passed as first argument to virtually all
455 data1 related routines. The functions data1_create and data1_destroy
456 creates and destroys a data1 handle respectively.
458 Added ODR encode stream member to all backend request structures
459 init, search, scan etc. This stream should be used to allocate all
460 memory used for the response when thread safe operation is needed.
462 Changed the comstack utility, cs_addstr, to be thread safe. The
463 returned hostname string returned by the function is now part the
466 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
467 function. The cs_straddr takes a COMSTACK handle as argument, so this
468 function must be used after cs_create and before bind/connect.
469 This function is thread safe.
471 Moved test server to 'ztest' directory - generic server code still
472 in 'server' directory.
474 Made prefix query (pquery.c) utility thread safe.
476 Added new function modifier YAZ_EXPORT to 'export' public DLL
477 functions when using windows (see include/yconfig.h).
479 Added definitions to the OID database (util/oid.c) (RVDM).
481 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
483 Added call to ccl_rpn_delete in client program.
485 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
486 release of RPN structure.
488 Added support for C++, headers uses extern "C" for public definitions.
489 With input from RVDM.
491 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
492 Thanks to Ronald van der Meer (RVDM).
494 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
496 Added support for private extensions to the OID database
497 (oid_setprivateoids()). Thanks to RVDM.
499 Added optional, physical ANY (key replication)
501 Fixed null-reference problem in GRS-1 output filter.
503 Proximity operator added to Prefix Query Format (PQF).
505 In test client command "base" accepts multiple databases.
507 Fixed bug in cs_close stack that caused trouble with WINSOCK.
511 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
513 Smallish bug-fixes in the new encoders/decoders (explain).
515 Bug fixed in DeleteRequest.
517 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
519 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
521 Added SOIF syntax (using private OID for now) to retrieval module and client.
523 Added Update extended service.
525 Added SearchResult-1 additional info structure.
527 Added optional CCL (ISO8777) interpreter as separate module. Available
530 --- 1.2 1996/6/10 (1st anniversary release)
532 Added Summary record syntax. Lightly tested.
534 Added OPAC record syntax. Untested.
536 Added ResourceReport service encoders/decoders. Untested.
538 Fixed bug in z_Unit - wrong tagging on unitSystem.
540 Fixed bug in the DiagRecs decoder.
542 Added options for max PDU size and session timeout to frontend-server.
544 Added documentation of query-language parsers and other supporting utilities.
546 [frontend-server] Added Attribute set to the bend_scanrequest API.
548 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
549 surrogate diagnostics were generated.
551 [retrieval] Allow multiple local values for attribute.
553 [retrieval] Allow multiple attributes per element in .abs files. index type.
555 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
559 Minor changes, mostly specific to Zebra's requirements (retrieval)
563 Repaired bug in frontend server when running multiple listening
564 endpoints in dynamic mode.
566 z_External() now won't break if a known, ASN.1 value comes encapsulated
567 in an octet-string. The value will pass through unmodified in an Odr_oct.
569 Added a bit of code to the demo client to decode & display
570 ASN.1-structured records represented in the octet-aligned branch of
571 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
573 Added z_ext_getentbyref() to the ASN module. Doc updated.
575 * Completed the SCAN definition in the ASN module. This may break SCAN
576 code based on older YAZ-versions at compile-time. The fix is easy -
579 * Added 'displayTerm' and OtherInformation to the TermInfo structure
580 under the SCAN definition. Remember to initialize this, server-people.
582 Comstack should now support the WAIS protocol in TCP/IP mode. Note
583 that this does not extend to ODR and ASN.
585 Comstack allows insertion of established socket (primarily for
586 inetd-operation of servers). Doc updated.
588 Front-end server can now start from the inetd in TCP mode. Doc
595 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
596 the rank and record number.
598 Adjustments to the frontend server.
600 Fixed diagnostic BER dumper. It ignored the file argument.
604 Various changes to retrieval module.
606 Changed the union discriminators of the protocol files from enums to
607 ints paired with #defines.
609 *Changed oident.class to oident.oclass to avoid a reserved word in C++
612 *Changed operator in the RPN structure to 'roperator', again to avoid a
615 Fixed problems in Explain decoders/encoders.
619 Memory bug in log module fixed.
623 Occasional malloc() of 0 bytes fixed in d1_espec.c.
625 Bug in Explain DatabaseInfo module fixed.
627 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
631 The shift to v1.0 signals that we now consider the *core* functionality
632 of YAZ reasonably stable (the core being more or less equivalent to
633 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
634 tested (Explain not at all - though that will happen soonish).
636 Minor changes to code to support Windows port.
638 Various minor changes after we're getting to use GRS-1 & co. more.
640 Added Espec-1 format.
642 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
643 of the protocol and it cannot be selected when encoding (maps into 'string'
644 when decoding). Needed to talk to some servers.
646 Demo client can request simple element set names.
648 Added Diagnostic Format encoders/decoders.
650 Added simple Close handling to frontend server (no hooks for resource
651 reporting yet), and demonstration client.
653 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
657 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
658 handled incorrectly when records were requested in the searchResponse. This
659 will only affect you if you use the frontend-server.
661 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
662 Test-client will ask for and print GRS1. Ztest will return dummy records
665 Added Explain encoders/decoders to the service-level API. Untested.
667 Added Extended Services: Item Order encoders and decoders to the Service-
668 level API. Untested. We could use a recent copy of the pertinent bits
669 of the ILL protocol to add those bits.
671 Added diagnostic format 1 encoders/decoders to the service-level API.
674 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
675 odr_cons.c, which causes a more correct output.
677 Fixed handling of searchRequest in frontend server. NextResultSetPosition
678 was always set to 0 when no records were requested in the searchRequest.
680 * Added better external-handling. This shouldn't harm old code that
681 *encodes* externals. It can break code that looks for a
682 'single-ASN1-type' representation, since those types that are known
683 are now decoded immediately. Look at the SUTRS sample code in
684 seshigh.c and client.c. Documentation updated.
686 Handling of structured records in bend_fetchresponse. Length -1 marks
687 structured record, type is deduced from format field.
690 Fairly quick maintenance release to add SUTRS support.
692 Fixed handling of SUTRS records in the demonstration client.
694 * Added format field to the bend_fetchrequest and bend_fetchresponce
695 structures of the backend API (frontend server). When the record is
696 returned, the value of the format field is mapped to an OID. The
697 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
698 of the record. The special value VAL_NONE in the bend_request means
699 that no specific format was requested by the client. Documentation
700 updated accordingly. Test server (ztest) will return a fixed dummy
701 SUTRS record if your client requests SUTRS.
703 Documentation updated accordingly.
705 You can now set external libraries and RANLIB support in the top-level
709 First public release.