1 Possible compatibility problems with earlier versions marked with '*'.
3 * ZOOO. Added Z3950_record_dup. Removed Z3950_resultset_get.
4 Function Z3950_resultset_record(s) returns references to records
5 "owned" by resultset. To become owner use Z3950_record_dup.
7 Function z_ext_record handles Extended Services.
11 CCL Parser fix: ignore token comma when dealing with and-lists.
13 Documentation updates for COMSTACK.
15 * ZOOM changes. Query object renamed from Z3950_search to Z3950_query.
16 Changed prototype Z3950_records. For some functions, int parameters
17 were changed to size_t.
19 TCP/IP COMSTACK no longer uses getprotobyname to avoid memory leak
22 New MARC decode/display function, marc_display_exl, which properly rejects
23 non-ISO2709 records. YAZ client uses it.
27 Fix bug: local attribute set wasn't set correctly in PQF strings.
31 * Old Z39.50 codecs no longer supported.
33 Added ZOOM C binding. See http://zoom.z3950.org/
35 Renamed states for COMSTACKs to avoid confusion with events.
37 Implemented cs_look and proper cs_rcvconnect.
39 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
41 Configure detects POSIX threads on OpenBSD.
43 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
44 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
46 When error is returned from present handler, non-surrogate diagnostic
47 is returned in present response (and fetch handler is no longer called).
49 * Minor adjustments to pquery parser (PQF). Token characters may be
50 escaped by using backslash (C-style).
52 PQF parser allows string attribute values to be specified. For @attr,
53 non-numeric characters after the equal-sign are treated as strings
56 CCL trunction character may be defined (@truncation in file)
58 * function zget_ExtendedServicesRequest sets waitAction to
59 waitIfPossible (was wait).
61 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
64 CCL operator names may be set in field definition files (CCL_bibset).
65 See ccl/bib1 for an example.
67 Fixes in ASN.1 compiler for C++ compatibility.
69 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
70 and "op_or" to avoid conflict with C++.
72 Fixed problem with GNU readline detection on Redhat 7.0.
74 Added step-size for Scan backend handler.
76 Fixed bug that made the frontend server crash when no attribute
77 set was specified for scan.
79 Front-end server automatically switches to original working directory
80 when installed as an NT service. Previously -w had to be specified to
83 Added extended attributes for retrieval module (data1), so that data1
84 records carry d1_readXML/SGML attributes. d1_read also supports
85 null-data rules ( <tag/>)
87 On UNIX when POSIX threads are available, a separate library libyazthread
88 is created. Programmers should link with that library and the yaz library
89 when using threads. The reason for the split was that some applications
90 on Linux, such as Apache, doesn't work well when using shared objects that
93 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
94 (or any frontend server) in SSL mode by specifying ssl: followed by
95 address. Only tested on UNIX.
97 Added feature for CCL module. Virtual structure s=al or s=ol generates
98 and-list and or-list respectively instead of phrase search.
102 * Added prefix "yaz_" for the functions log_init.., log_file.. and
103 log_mask_str. This was done to avoid name conflicts with other libraries
104 (such as other PHP extensions).
106 Added raw OID member for preferred record syntax (request_format_raw)
107 and returned record syntax (output_format_raw) for backend fetch method.
109 Config file yaz-config now accepts options so that it returns specific
110 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
112 Shared library support for UNIX using GNU libtool.
114 * Modified backend interface. Request/Response struct's replaced by
115 one read/write C struct. For example bend_fetchrequest and
116 bend_fetchresult have been replaced by single bend_fetch_rr struct.
117 Every handler - even search has to be registered in bend_init
118 handler. This means that the YAZ library no longer refers to
119 external functions and it makes it possible to make the whole
120 thing a single DLL/SO.
122 Added Segment handler for backend server.
124 Added Zmbol/Zebra administrative functions to YAZ client.
126 Threaded frontend server on UNIX (when POSIX Threads are available).
127 Starting the server with option -T enables multi-threading.
131 Added configure option --enable-comp/disable-comp to control use
132 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
133 located in sub directory asn.
135 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
136 in ${exec_prefix}/bin along with the other programs yaz-client and
139 GNU automake used to maintain makefiles.
143 Changed retrieval module so that we can load records with no abstract
144 syntax defined. Tagpaths in these records are fully composed of string
147 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
151 On UNIX, the generated makefile now supports a proper 'make install'.
152 The prefix can be set via GNU configure to set the install location
153 (default is /usr/local).
155 * YAZ programs client and ztest were renamed to yaz-client and
156 yaz-ztest to avoid conflicts when users install YAZ in "standard"
157 locations, such as /usr/bin,/usr/local/bin,etc.
159 * YAZ Header files were moved from include to include/yaz. YAZ Header
160 files are referred to as include <yaz/log.h> rather than <log.h>.
161 The YAZ include path (-I ..) is therefore the same as before. Programmers
162 should update their #include statements or use -Ipath/include/yaz
163 instead. The main motivation for doing this change is that YAZ header files
164 can be installed in "standard" locations /usr/include,/usr/local/include
165 without introducing conflicts, since ALL YAZ header files are stored
166 in subdirectory yaz (under /usr/include for example).
168 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
169 rather than project/workspace files. We switched because project files
170 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
173 Changed name of logging function, logf, to yaz_log, to prevent name
174 clash with some math-log functions. The YAZ header log.h defines logf
175 to yaz_log (#define) so there should be no incompatibilities by this
178 Added bend_start/bend_stop handlers for server. These handler are
179 called on start/stop of server. For windows they are called whenever
180 a service is started/stopped.
182 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
183 a fairly small ASN.1 compiler written in Tcl. The compiler is located
184 in util/yc.tcl. The auto-generated C code structures are, in a few
185 cases, incompatible with the old decoders. There are differences in the
186 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
187 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
188 The preprocessor variable ASN_COMPILED is defined when the compiled
189 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
190 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
191 wish to use the old encoders/decoders you can specify --disable-yc
194 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
195 version so that it supports both new - and old version of DB Update
197 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
198 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
199 change. The name parameter can be set to 0 in which no name is specified
200 for the construction. The macros odr_implicit and odr_explicit sets name
201 parameter to zero for the construction involved. New macros
202 odr_implicit_tag and odr_explicit_tag are similar to the others,
203 except that a name parameter is added. For programmers' that don't use
204 ODR they probably only need to change the call to z_APDU and z_External.
206 Added access control facility by interfacing the TCP wrapper library.
207 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
208 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
209 name of the daemon and enables the access control as specified in
210 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
212 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
213 den Dool <H.M.vdnDool@kub.nl>.
215 Added reference ID parameter to most functions in server API - refer
216 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
218 Changed name of ccl library to libccl.a (was ccl.a).
220 Fixed bug in decoder for Explain (Category TargetInfo).
222 Added support for GNU readline in client. Thanks to Jacob Poulsen
223 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
225 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
226 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
227 IMPLEMENTATION! This change was made to the development version before
228 the ZIG decided to retract the amendment. If any users MUST be
229 compatible with the original Update definition, PLEASE CONTACT US, and
230 we will include a separate definition corresponding to the old Update
231 ES. Note that because of the change to the ASN.1 of the
232 TaskPackageRecordStructure we cannot define a single structure that
233 will support both versions.
235 * Added const modifier to buffer parameter for some ODR/BER encoding
236 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
237 completeWAIS, odr_dumpBER.
239 Fixed bug in client.c which caused a crash when a scanResponse didn't
240 contain positionOfTerm.
242 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
243 * will cause an error in a client if a non-YAZ target sends both a
244 * list of Scan entries and non-surrogate diagnostics.
246 Retrieval module enhancements. Tag sets may be typed in the reference
247 to it. From the .abs-file the "tagset" directive takes a third optional
248 integer type for the tag set referenced. From a .tag-file the "include"
249 directive takes a third optional type as well. The old "type" directive
250 in the tag set itself is still recognized but acts as the default type
253 Backend interface change. Individual Scan terms returned from bend_scan
254 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
255 in include/backend.h.
257 Retrieval module enhancements. Multiple tag sets and attribute sets may
258 be specified in abstract syntax specs. Revised the error/warning for
259 logging messages reported by the retrieval module when reading the
262 Object Identifier system (oid_..) changed. The API is backwards
263 compatible but the oid-routines now allocates new OID's when needed.
264 Raw OID's may be specified in oid_getvalbyname.
266 YAZ now uses GNU configure to generate Makefile(s).
268 * Minor changes in some of the member names of DeleteResultSetRequest and
269 DeleteResultSetResponse. See include/proto.h.
271 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
272 and added member 'languages' in TargetInfo (which was missing).
274 Changed the way attribute sets are handled in the retrieval
275 module. These are now cached, just like the abstract syntaxes
278 Changed YAZ so that it links with compiled ASN.1.
280 Added Explain-schema definitions and mapping routines. The following
281 Explain categories have been implemented: AttributeDetails,
282 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
284 Fixed minor bug in Windows version of Server Library.
286 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
288 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
290 Added EXTERNAL: UNIverse Resource Report (non-standard).
292 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
293 ENUMERATED and SET OF.
295 * Added 'const' to some of the char pointer arguments for the
296 functions, data1_read_node, data1_getelementbytagname,
297 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
300 Fixed bug in data1_insert_taggeddata - the last_child member of
301 parent wasn't initialised.
303 * Changed data1_read_record and data1_read_node so that the supplied
304 "SGML"-buffer is read-only. In particular the resulting data1 - tree
305 doesn't refer to any parts of the "SGML"-buffer.
307 Fixed bug in server library (Windows version of statserv_remove).
309 * Changed code so that it compiles as C++. The type definition
310 of Odr_fun which is a member of Odr_arm was changed. The result is,
311 that an explicit typecast is needed for the fun pointer when
312 using Odr_arm - as in:
313 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
315 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
317 Implemented the new structured date and time definition as approved
318 by the ZIG. Added schemaId element to the specificTag in Espec-1
319 (also approved at the last ZIG). Thanks to RVDM.
321 Added some Object identifiers (RVDM).
323 Changed the Update Extended Service (RVDM).
325 Added command "refid" to client which specifies referenceId for
326 the following requests.
328 Implemented extended service handling for server. See ztest.c
329 for an example as well as backend.h. New handlers are registerd
332 * Changed interface for sort in server.
334 Added new members to statserv_options_block. It allows a server
335 to read options from another source than just the command line. Thanks
336 to Charles Woodfield.
338 * Changed definition of Z_Triple in file prt-grs.h - member boolean
339 renamed to zboolean. Some C++ compilers complained about the name.
341 Minor changes to gils.abs. Added index 's' (sort) on title
342 and date/time-last-modified.
346 Fixed bug in server library regarding inetd mode (-i). This bug
347 was introduced by release 1.4.
351 Added sort facility in client and backend server interface.
353 Fixed problem with dependencies in Makefile(s).
355 Fixed bugs for encoders/decoders of extended services and
358 Implemented sub-tree feature for schemas. Sub-trees are
359 referenced in *.abs-files. See explain.abs for an example
360 of the use of this feature.
362 Modified bib1.att; local attributes for ANY didn't include
363 ANY itself (only affects use of the retrieval module).
365 Fixed bug in plain SGML reader in function data1_read_node:
366 tags with prefix "var" was incorrectly interpreted as variants.
368 Added feature "sub-schemas" to enable references to - and definitions
369 of - group of elements.
371 * Removed member parent from type data1_element (in data1.h).
373 Implemented function odr_nullval() that returns the value of
376 * Removed member num_children from data1_node (in data1.h).
378 Made NT service interface part of the server library. The
379 function statserv_main uses the NT service when required and
380 calls the statserv_start / statserv_close routines.
382 Routine zget_SearchRequest and zget_PresentRequest fills
383 resultSetName/Id member with "default" instead of "Default".
385 Fixed memory leak in server. Request queue member wasn't freed.
387 Fixed nmem_exit so that memory is freed.
391 Revised the CCL parser utility to be thread safe.
393 Added function, oid_ent_to_oid, to replace the function
394 oid_getoidbyent, which is not thread safe.
396 * Added nmem_init and nmem_exit to initialize and release
397 NMEM resources. Function nmem_init should be called once in the
398 initial thread before NMEM/ODR is used. statserv.c and client.c
399 have been changed accordingly. The change was necessary to make
400 NMEM thread safe. The NMEM memory pool is shared amongst threads
401 in a process. Unix-based applications will still work fine without
404 Added NT Services interface for the the Z39.50 (statserv) Server.
405 Refer to the ztest.c source on the usage.
407 Windows 95/NT port using MSVC5.0. Project files are included in the
410 * Defined new 'global' handle for the retrieval (data1) system. The
411 new handled, data1_handle, describes the state of the data1 system.
412 This handle is passed as first argument to virtually all
413 data1 related routines. The functions data1_create and data1_destroy
414 creates and destroys a data1 handle respectively.
416 Added ODR encode stream member to all backend request structures
417 init, search, scan etc. This stream should be used to allocate all
418 memory used for the response when thread safe operation is needed.
420 Changed the comstack utility, cs_addstr, to be thread safe. The
421 returned hostname string returned by the function is now part the
424 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
425 function. The cs_straddr takes a COMSTACK handle as argument, so this
426 function must be used after cs_create and before bind/connect.
427 This function is thread safe.
429 Moved test server to 'ztest' directory - generic server code still
430 in 'server' directory.
432 Made prefix query (pquery.c) utility thread safe.
434 Added new function modifier YAZ_EXPORT to 'export' public DLL
435 functions when using windows (see include/yconfig.h).
437 Added definitions to the OID database (util/oid.c) (RVDM).
439 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
441 Added call to ccl_rpn_delete in client program.
443 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
444 release of RPN structure.
446 Added support for C++, headers uses extern "C" for public definitions.
447 With input from RVDM.
449 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
450 Thanks to Ronald van der Meer (RVDM).
452 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
454 Added support for private extensions to the OID database
455 (oid_setprivateoids()). Thanks to RVDM.
457 Added optional, physical ANY (key replication)
459 Fixed null-reference problem in GRS-1 output filter.
461 Proximity operator added to Prefix Query Format (PQF).
463 In test client command "base" accepts multiple databases.
465 Fixed bug in cs_close stack that caused trouble with WINSOCK.
469 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
471 Smallish bug-fixes in the new encoders/decoders (explain).
473 Bug fixed in DeleteRequest.
475 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
477 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
479 Added SOIF syntax (using private OID for now) to retrieval module and client.
481 Added Update extended service.
483 Added SearchResult-1 additional info structure.
485 Added optional CCL (ISO8777) interpreter as separate module. Available
488 --- 1.2 1996/6/10 (1st anniversary release)
490 Added Summary record syntax. Lightly tested.
492 Added OPAC record syntax. Untested.
494 Added ResourceReport service encoders/decoders. Untested.
496 Fixed bug in z_Unit - wrong tagging on unitSystem.
498 Fixed bug in the DiagRecs decoder.
500 Added options for max PDU size and session timeout to frontend-server.
502 Added documentation of query-language parsers and other supporting utilities.
504 [frontend-server] Added Attribute set to the bend_scanrequest API.
506 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
507 surrogate diagnostics were generated.
509 [retrieval] Allow multiple local values for attribute.
511 [retrieval] Allow multiple attributes per element in .abs files. index type.
513 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
517 Minor changes, mostly specific to Zebra's requirements (retrieval)
521 Repaired bug in frontend server when running multiple listening
522 endpoints in dynamic mode.
524 z_External() now won't break if a known, ASN.1 value comes encapsulated
525 in an octet-string. The value will pass through unmodified in an Odr_oct.
527 Added a bit of code to the demo client to decode & display
528 ASN.1-structured records represented in the octet-aligned branch of
529 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
531 Added z_ext_getentbyref() to the ASN module. Doc updated.
533 * Completed the SCAN definition in the ASN module. This may break SCAN
534 code based on older YAZ-versions at compile-time. The fix is easy -
537 * Added 'displayTerm' and OtherInformation to the TermInfo structure
538 under the SCAN definition. Remember to initialize this, server-people.
540 Comstack should now support the WAIS protocol in TCP/IP mode. Note
541 that this does not extend to ODR and ASN.
543 Comstack allows insertion of established socket (primarily for
544 inetd-operation of servers). Doc updated.
546 Front-end server can now start from the inetd in TCP mode. Doc
553 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
554 the rank and record number.
556 Adjustments to the frontend server.
558 Fixed diagnostic BER dumper. It ignored the file argument.
562 Various changes to retrieval module.
564 Changed the union discriminators of the protocol files from enums to
565 ints paired with #defines.
567 *Changed oident.class to oident.oclass to avoid a reserved word in C++
570 *Changed operator in the RPN structure to 'roperator', again to avoid a
573 Fixed problems in Explain decoders/encoders.
577 Memory bug in log module fixed.
581 Occasional malloc() of 0 bytes fixed in d1_espec.c.
583 Bug in Explain DatabaseInfo module fixed.
585 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
589 The shift to v1.0 signals that we now consider the *core* functionality
590 of YAZ reasonably stable (the core being more or less equivalent to
591 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
592 tested (Explain not at all - though that will happen soonish).
594 Minor changes to code to support Windows port.
596 Various minor changes after we're getting to use GRS-1 & co. more.
598 Added Espec-1 format.
600 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
601 of the protocol and it cannot be selected when encoding (maps into 'string'
602 when decoding). Needed to talk to some servers.
604 Demo client can request simple element set names.
606 Added Diagnostic Format encoders/decoders.
608 Added simple Close handling to frontend server (no hooks for resource
609 reporting yet), and demonstration client.
611 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
615 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
616 handled incorrectly when records were requested in the searchResponse. This
617 will only affect you if you use the frontend-server.
619 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
620 Test-client will ask for and print GRS1. Ztest will return dummy records
623 Added Explain encoders/decoders to the service-level API. Untested.
625 Added Extended Services: Item Order encoders and decoders to the Service-
626 level API. Untested. We could use a recent copy of the pertinent bits
627 of the ILL protocol to add those bits.
629 Added diagnostic format 1 encoders/decoders to the service-level API.
632 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
633 odr_cons.c, which causes a more correct output.
635 Fixed handling of searchRequest in frontend server. NextResultSetPosition
636 was always set to 0 when no records were requested in the searchRequest.
638 * Added better external-handling. This shouldn't harm old code that
639 *encodes* externals. It can break code that looks for a
640 'single-ASN1-type' representation, since those types that are known
641 are now decoded immediately. Look at the SUTRS sample code in
642 seshigh.c and client.c. Documentation updated.
644 Handling of structured records in bend_fetchresponse. Length -1 marks
645 structured record, type is deduced from format field.
648 Fairly quick maintenance release to add SUTRS support.
650 Fixed handling of SUTRS records in the demonstration client.
652 * Added format field to the bend_fetchrequest and bend_fetchresponce
653 structures of the backend API (frontend server). When the record is
654 returned, the value of the format field is mapped to an OID. The
655 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
656 of the record. The special value VAL_NONE in the bend_request means
657 that no specific format was requested by the client. Documentation
658 updated accordingly. Test server (ztest) will return a fixed dummy
659 SUTRS record if your client requests SUTRS.
661 Documentation updated accordingly.
663 You can now set external libraries and RANLIB support in the top-level
667 First public release.