1 Possible compatibility problems with earlier versions marked with '*'.
3 New MARC decode/display function, marc_display_exl, which better rejects
4 bad ISO2709 records. YAZ client uses it.
8 Fix bug: local attribute set wasn't set correctly in PQF strings.
12 * Old Z39.50 codecs no longer supported.
14 Added ZOOM C binding. See http://zoom.z3950.org/
16 Renamed states for COMSTACKs to avoid confusion with events.
18 Implemented cs_look and proper cs_rcvconnect.
20 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
22 Configure detects POSIX threads on OpenBSD.
24 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
25 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
27 When error is returned from present handler, non-surrogate diagnostic
28 is returned in present response (and fetch handler is no longer called).
30 * Minor adjustments to pquery parser (PQF). Token characters may be
31 escaped by using backslash (C-style).
33 PQF parser allows string attribute values to be specified. For @attr,
34 non-numeric characters after the equal-sign are treated as strings
37 CCL trunction character may be defined (@truncation in file)
39 * function zget_ExtendedServicesRequest sets waitAction to
40 waitIfPossible (was wait).
42 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
45 CCL operator names may be set in field definition files (CCL_bibset).
46 See ccl/bib1 for an example.
48 Fixes in ASN.1 compiler for C++ compatibility.
50 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
51 and "op_or" to avoid conflict with C++.
53 Fixed problem with GNU readline detection on Redhat 7.0.
55 Added step-size for Scan backend handler.
57 Fixed bug that made the frontend server crash when no attribute
58 set was specified for scan.
60 Front-end server automatically switches to original working directory
61 when installed as an NT service. Previously -w had to be specified to
64 Added extended attributes for retrieval module (data1), so that data1
65 records carry d1_readXML/SGML attributes. d1_read also supports
66 null-data rules ( <tag/>)
68 On UNIX when POSIX threads are available, a separate library libyazthread
69 is created. Programmers should link with that library and the yaz library
70 when using threads. The reason for the split was that some applications
71 on Linux, such as Apache, doesn't work well when using shared objects that
74 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
75 (or any frontend server) in SSL mode by specifying ssl: followed by
76 address. Only tested on UNIX.
78 Added feature for CCL module. Virtual structure s=al or s=ol generates
79 and-list and or-list respectively instead of phrase search.
83 * Added prefix "yaz_" for the functions log_init.., log_file.. and
84 log_mask_str. This was done to avoid name conflicts with other libraries
85 (such as other PHP extensions).
87 Added raw OID member for preferred record syntax (request_format_raw)
88 and returned record syntax (output_format_raw) for backend fetch method.
90 Config file yaz-config now accepts options so that it returns specific
91 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
93 Shared library support for UNIX using GNU libtool.
95 * Modified backend interface. Request/Response struct's replaced by
96 one read/write C struct. For example bend_fetchrequest and
97 bend_fetchresult have been replaced by single bend_fetch_rr struct.
98 Every handler - even search has to be registered in bend_init
99 handler. This means that the YAZ library no longer refers to
100 external functions and it makes it possible to make the whole
101 thing a single DLL/SO.
103 Added Segment handler for backend server.
105 Added Zmbol/Zebra administrative functions to YAZ client.
107 Threaded frontend server on UNIX (when POSIX Threads are available).
108 Starting the server with option -T enables multi-threading.
112 Added configure option --enable-comp/disable-comp to control use
113 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
114 located in sub directory asn.
116 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
117 in ${exec_prefix}/bin along with the other programs yaz-client and
120 GNU automake used to maintain makefiles.
124 Changed retrieval module so that we can load records with no abstract
125 syntax defined. Tagpaths in these records are fully composed of string
128 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
132 On UNIX, the generated makefile now supports a proper 'make install'.
133 The prefix can be set via GNU configure to set the install location
134 (default is /usr/local).
136 * YAZ programs client and ztest were renamed to yaz-client and
137 yaz-ztest to avoid conflicts when users install YAZ in "standard"
138 locations, such as /usr/bin,/usr/local/bin,etc.
140 * YAZ Header files were moved from include to include/yaz. YAZ Header
141 files are referred to as include <yaz/log.h> rather than <log.h>.
142 The YAZ include path (-I ..) is therefore the same as before. Programmers
143 should update their #include statements or use -Ipath/include/yaz
144 instead. The main motivation for doing this change is that YAZ header files
145 can be installed in "standard" locations /usr/include,/usr/local/include
146 without introducing conflicts, since ALL YAZ header files are stored
147 in subdirectory yaz (under /usr/include for example).
149 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
150 rather than project/workspace files. We switched because project files
151 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
154 Changed name of logging function, logf, to yaz_log, to prevent name
155 clash with some math-log functions. The YAZ header log.h defines logf
156 to yaz_log (#define) so there should be no incompatibilities by this
159 Added bend_start/bend_stop handlers for server. These handler are
160 called on start/stop of server. For windows they are called whenever
161 a service is started/stopped.
163 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
164 a fairly small ASN.1 compiler written in Tcl. The compiler is located
165 in util/yc.tcl. The auto-generated C code structures are, in a few
166 cases, incompatible with the old decoders. There are differences in the
167 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
168 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
169 The preprocessor variable ASN_COMPILED is defined when the compiled
170 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
171 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
172 wish to use the old encoders/decoders you can specify --disable-yc
175 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
176 version so that it supports both new - and old version of DB Update
178 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
179 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
180 change. The name parameter can be set to 0 in which no name is specified
181 for the construction. The macros odr_implicit and odr_explicit sets name
182 parameter to zero for the construction involved. New macros
183 odr_implicit_tag and odr_explicit_tag are similar to the others,
184 except that a name parameter is added. For programmers' that don't use
185 ODR they probably only need to change the call to z_APDU and z_External.
187 Added access control facility by interfacing the TCP wrapper library.
188 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
189 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
190 name of the daemon and enables the access control as specified in
191 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
193 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
194 den Dool <H.M.vdnDool@kub.nl>.
196 Added reference ID parameter to most functions in server API - refer
197 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
199 Changed name of ccl library to libccl.a (was ccl.a).
201 Fixed bug in decoder for Explain (Category TargetInfo).
203 Added support for GNU readline in client. Thanks to Jacob Poulsen
204 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
206 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
207 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
208 IMPLEMENTATION! This change was made to the development version before
209 the ZIG decided to retract the amendment. If any users MUST be
210 compatible with the original Update definition, PLEASE CONTACT US, and
211 we will include a separate definition corresponding to the old Update
212 ES. Note that because of the change to the ASN.1 of the
213 TaskPackageRecordStructure we cannot define a single structure that
214 will support both versions.
216 * Added const modifier to buffer parameter for some ODR/BER encoding
217 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
218 completeWAIS, odr_dumpBER.
220 Fixed bug in client.c which caused a crash when a scanResponse didn't
221 contain positionOfTerm.
223 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
224 * will cause an error in a client if a non-YAZ target sends both a
225 * list of Scan entries and non-surrogate diagnostics.
227 Retrieval module enhancements. Tag sets may be typed in the reference
228 to it. From the .abs-file the "tagset" directive takes a third optional
229 integer type for the tag set referenced. From a .tag-file the "include"
230 directive takes a third optional type as well. The old "type" directive
231 in the tag set itself is still recognized but acts as the default type
234 Backend interface change. Individual Scan terms returned from bend_scan
235 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
236 in include/backend.h.
238 Retrieval module enhancements. Multiple tag sets and attribute sets may
239 be specified in abstract syntax specs. Revised the error/warning for
240 logging messages reported by the retrieval module when reading the
243 Object Identifier system (oid_..) changed. The API is backwards
244 compatible but the oid-routines now allocates new OID's when needed.
245 Raw OID's may be specified in oid_getvalbyname.
247 YAZ now uses GNU configure to generate Makefile(s).
249 * Minor changes in some of the member names of DeleteResultSetRequest and
250 DeleteResultSetResponse. See include/proto.h.
252 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
253 and added member 'languages' in TargetInfo (which was missing).
255 Changed the way attribute sets are handled in the retrieval
256 module. These are now cached, just like the abstract syntaxes
259 Changed YAZ so that it links with compiled ASN.1.
261 Added Explain-schema definitions and mapping routines. The following
262 Explain categories have been implemented: AttributeDetails,
263 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
265 Fixed minor bug in Windows version of Server Library.
267 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
269 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
271 Added EXTERNAL: UNIverse Resource Report (non-standard).
273 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
274 ENUMERATED and SET OF.
276 * Added 'const' to some of the char pointer arguments for the
277 functions, data1_read_node, data1_getelementbytagname,
278 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
281 Fixed bug in data1_insert_taggeddata - the last_child member of
282 parent wasn't initialised.
284 * Changed data1_read_record and data1_read_node so that the supplied
285 "SGML"-buffer is read-only. In particular the resulting data1 - tree
286 doesn't refer to any parts of the "SGML"-buffer.
288 Fixed bug in server library (Windows version of statserv_remove).
290 * Changed code so that it compiles as C++. The type definition
291 of Odr_fun which is a member of Odr_arm was changed. The result is,
292 that an explicit typecast is needed for the fun pointer when
293 using Odr_arm - as in:
294 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
296 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
298 Implemented the new structured date and time definition as approved
299 by the ZIG. Added schemaId element to the specificTag in Espec-1
300 (also approved at the last ZIG). Thanks to RVDM.
302 Added some Object identifiers (RVDM).
304 Changed the Update Extended Service (RVDM).
306 Added command "refid" to client which specifies referenceId for
307 the following requests.
309 Implemented extended service handling for server. See ztest.c
310 for an example as well as backend.h. New handlers are registerd
313 * Changed interface for sort in server.
315 Added new members to statserv_options_block. It allows a server
316 to read options from another source than just the command line. Thanks
317 to Charles Woodfield.
319 * Changed definition of Z_Triple in file prt-grs.h - member boolean
320 renamed to zboolean. Some C++ compilers complained about the name.
322 Minor changes to gils.abs. Added index 's' (sort) on title
323 and date/time-last-modified.
327 Fixed bug in server library regarding inetd mode (-i). This bug
328 was introduced by release 1.4.
332 Added sort facility in client and backend server interface.
334 Fixed problem with dependencies in Makefile(s).
336 Fixed bugs for encoders/decoders of extended services and
339 Implemented sub-tree feature for schemas. Sub-trees are
340 referenced in *.abs-files. See explain.abs for an example
341 of the use of this feature.
343 Modified bib1.att; local attributes for ANY didn't include
344 ANY itself (only affects use of the retrieval module).
346 Fixed bug in plain SGML reader in function data1_read_node:
347 tags with prefix "var" was incorrectly interpreted as variants.
349 Added feature "sub-schemas" to enable references to - and definitions
350 of - group of elements.
352 * Removed member parent from type data1_element (in data1.h).
354 Implemented function odr_nullval() that returns the value of
357 * Removed member num_children from data1_node (in data1.h).
359 Made NT service interface part of the server library. The
360 function statserv_main uses the NT service when required and
361 calls the statserv_start / statserv_close routines.
363 Routine zget_SearchRequest and zget_PresentRequest fills
364 resultSetName/Id member with "default" instead of "Default".
366 Fixed memory leak in server. Request queue member wasn't freed.
368 Fixed nmem_exit so that memory is freed.
372 Revised the CCL parser utility to be thread safe.
374 Added function, oid_ent_to_oid, to replace the function
375 oid_getoidbyent, which is not thread safe.
377 * Added nmem_init and nmem_exit to initialize and release
378 NMEM resources. Function nmem_init should be called once in the
379 initial thread before NMEM/ODR is used. statserv.c and client.c
380 have been changed accordingly. The change was necessary to make
381 NMEM thread safe. The NMEM memory pool is shared amongst threads
382 in a process. Unix-based applications will still work fine without
385 Added NT Services interface for the the Z39.50 (statserv) Server.
386 Refer to the ztest.c source on the usage.
388 Windows 95/NT port using MSVC5.0. Project files are included in the
391 * Defined new 'global' handle for the retrieval (data1) system. The
392 new handled, data1_handle, describes the state of the data1 system.
393 This handle is passed as first argument to virtually all
394 data1 related routines. The functions data1_create and data1_destroy
395 creates and destroys a data1 handle respectively.
397 Added ODR encode stream member to all backend request structures
398 init, search, scan etc. This stream should be used to allocate all
399 memory used for the response when thread safe operation is needed.
401 Changed the comstack utility, cs_addstr, to be thread safe. The
402 returned hostname string returned by the function is now part the
405 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
406 function. The cs_straddr takes a COMSTACK handle as argument, so this
407 function must be used after cs_create and before bind/connect.
408 This function is thread safe.
410 Moved test server to 'ztest' directory - generic server code still
411 in 'server' directory.
413 Made prefix query (pquery.c) utility thread safe.
415 Added new function modifier YAZ_EXPORT to 'export' public DLL
416 functions when using windows (see include/yconfig.h).
418 Added definitions to the OID database (util/oid.c) (RVDM).
420 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
422 Added call to ccl_rpn_delete in client program.
424 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
425 release of RPN structure.
427 Added support for C++, headers uses extern "C" for public definitions.
428 With input from RVDM.
430 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
431 Thanks to Ronald van der Meer (RVDM).
433 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
435 Added support for private extensions to the OID database
436 (oid_setprivateoids()). Thanks to RVDM.
438 Added optional, physical ANY (key replication)
440 Fixed null-reference problem in GRS-1 output filter.
442 Proximity operator added to Prefix Query Format (PQF).
444 In test client command "base" accepts multiple databases.
446 Fixed bug in cs_close stack that caused trouble with WINSOCK.
450 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
452 Smallish bug-fixes in the new encoders/decoders (explain).
454 Bug fixed in DeleteRequest.
456 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
458 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
460 Added SOIF syntax (using private OID for now) to retrieval module and client.
462 Added Update extended service.
464 Added SearchResult-1 additional info structure.
466 Added optional CCL (ISO8777) interpreter as separate module. Available
469 --- 1.2 1996/6/10 (1st anniversary release)
471 Added Summary record syntax. Lightly tested.
473 Added OPAC record syntax. Untested.
475 Added ResourceReport service encoders/decoders. Untested.
477 Fixed bug in z_Unit - wrong tagging on unitSystem.
479 Fixed bug in the DiagRecs decoder.
481 Added options for max PDU size and session timeout to frontend-server.
483 Added documentation of query-language parsers and other supporting utilities.
485 [frontend-server] Added Attribute set to the bend_scanrequest API.
487 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
488 surrogate diagnostics were generated.
490 [retrieval] Allow multiple local values for attribute.
492 [retrieval] Allow multiple attributes per element in .abs files. index type.
494 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
498 Minor changes, mostly specific to Zebra's requirements (retrieval)
502 Repaired bug in frontend server when running multiple listening
503 endpoints in dynamic mode.
505 z_External() now won't break if a known, ASN.1 value comes encapsulated
506 in an octet-string. The value will pass through unmodified in an Odr_oct.
508 Added a bit of code to the demo client to decode & display
509 ASN.1-structured records represented in the octet-aligned branch of
510 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
512 Added z_ext_getentbyref() to the ASN module. Doc updated.
514 * Completed the SCAN definition in the ASN module. This may break SCAN
515 code based on older YAZ-versions at compile-time. The fix is easy -
518 * Added 'displayTerm' and OtherInformation to the TermInfo structure
519 under the SCAN definition. Remember to initialize this, server-people.
521 Comstack should now support the WAIS protocol in TCP/IP mode. Note
522 that this does not extend to ODR and ASN.
524 Comstack allows insertion of established socket (primarily for
525 inetd-operation of servers). Doc updated.
527 Front-end server can now start from the inetd in TCP mode. Doc
534 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
535 the rank and record number.
537 Adjustments to the frontend server.
539 Fixed diagnostic BER dumper. It ignored the file argument.
543 Various changes to retrieval module.
545 Changed the union discriminators of the protocol files from enums to
546 ints paired with #defines.
548 *Changed oident.class to oident.oclass to avoid a reserved word in C++
551 *Changed operator in the RPN structure to 'roperator', again to avoid a
554 Fixed problems in Explain decoders/encoders.
558 Memory bug in log module fixed.
562 Occasional malloc() of 0 bytes fixed in d1_espec.c.
564 Bug in Explain DatabaseInfo module fixed.
566 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
570 The shift to v1.0 signals that we now consider the *core* functionality
571 of YAZ reasonably stable (the core being more or less equivalent to
572 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
573 tested (Explain not at all - though that will happen soonish).
575 Minor changes to code to support Windows port.
577 Various minor changes after we're getting to use GRS-1 & co. more.
579 Added Espec-1 format.
581 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
582 of the protocol and it cannot be selected when encoding (maps into 'string'
583 when decoding). Needed to talk to some servers.
585 Demo client can request simple element set names.
587 Added Diagnostic Format encoders/decoders.
589 Added simple Close handling to frontend server (no hooks for resource
590 reporting yet), and demonstration client.
592 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
596 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
597 handled incorrectly when records were requested in the searchResponse. This
598 will only affect you if you use the frontend-server.
600 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
601 Test-client will ask for and print GRS1. Ztest will return dummy records
604 Added Explain encoders/decoders to the service-level API. Untested.
606 Added Extended Services: Item Order encoders and decoders to the Service-
607 level API. Untested. We could use a recent copy of the pertinent bits
608 of the ILL protocol to add those bits.
610 Added diagnostic format 1 encoders/decoders to the service-level API.
613 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
614 odr_cons.c, which causes a more correct output.
616 Fixed handling of searchRequest in frontend server. NextResultSetPosition
617 was always set to 0 when no records were requested in the searchRequest.
619 * Added better external-handling. This shouldn't harm old code that
620 *encodes* externals. It can break code that looks for a
621 'single-ASN1-type' representation, since those types that are known
622 are now decoded immediately. Look at the SUTRS sample code in
623 seshigh.c and client.c. Documentation updated.
625 Handling of structured records in bend_fetchresponse. Length -1 marks
626 structured record, type is deduced from format field.
629 Fairly quick maintenance release to add SUTRS support.
631 Fixed handling of SUTRS records in the demonstration client.
633 * Added format field to the bend_fetchrequest and bend_fetchresponce
634 structures of the backend API (frontend server). When the record is
635 returned, the value of the format field is mapped to an OID. The
636 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
637 of the record. The special value VAL_NONE in the bend_request means
638 that no specific format was requested by the client. Documentation
639 updated accordingly. Test server (ztest) will return a fixed dummy
640 SUTRS record if your client requests SUTRS.
642 Documentation updated accordingly.
644 You can now set external libraries and RANLIB support in the top-level
648 First public release.