1 Possible compatibility problems with earlier versions marked with '*'.
3 CCL Parser fix: ignore token comma when dealing with and-lists.
5 Documentation updates for COMSTACK.
7 * ZOOM changes. Query object renamed from Z3950_search to Z3950_query.
8 Changed prototype Z3950_records. For some functions, int parameters
9 were changed to size_t.
11 TCP/IP COMSTACK no longer uses getprotobyname to avoid memory leak
14 New MARC decode/display function, marc_display_exl, which properly rejects
15 non-ISO2709 records. YAZ client uses it.
19 Fix bug: local attribute set wasn't set correctly in PQF strings.
23 * Old Z39.50 codecs no longer supported.
25 Added ZOOM C binding. See http://zoom.z3950.org/
27 Renamed states for COMSTACKs to avoid confusion with events.
29 Implemented cs_look and proper cs_rcvconnect.
31 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
33 Configure detects POSIX threads on OpenBSD.
35 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
36 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
38 When error is returned from present handler, non-surrogate diagnostic
39 is returned in present response (and fetch handler is no longer called).
41 * Minor adjustments to pquery parser (PQF). Token characters may be
42 escaped by using backslash (C-style).
44 PQF parser allows string attribute values to be specified. For @attr,
45 non-numeric characters after the equal-sign are treated as strings
48 CCL trunction character may be defined (@truncation in file)
50 * function zget_ExtendedServicesRequest sets waitAction to
51 waitIfPossible (was wait).
53 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
56 CCL operator names may be set in field definition files (CCL_bibset).
57 See ccl/bib1 for an example.
59 Fixes in ASN.1 compiler for C++ compatibility.
61 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
62 and "op_or" to avoid conflict with C++.
64 Fixed problem with GNU readline detection on Redhat 7.0.
66 Added step-size for Scan backend handler.
68 Fixed bug that made the frontend server crash when no attribute
69 set was specified for scan.
71 Front-end server automatically switches to original working directory
72 when installed as an NT service. Previously -w had to be specified to
75 Added extended attributes for retrieval module (data1), so that data1
76 records carry d1_readXML/SGML attributes. d1_read also supports
77 null-data rules ( <tag/>)
79 On UNIX when POSIX threads are available, a separate library libyazthread
80 is created. Programmers should link with that library and the yaz library
81 when using threads. The reason for the split was that some applications
82 on Linux, such as Apache, doesn't work well when using shared objects that
85 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
86 (or any frontend server) in SSL mode by specifying ssl: followed by
87 address. Only tested on UNIX.
89 Added feature for CCL module. Virtual structure s=al or s=ol generates
90 and-list and or-list respectively instead of phrase search.
94 * Added prefix "yaz_" for the functions log_init.., log_file.. and
95 log_mask_str. This was done to avoid name conflicts with other libraries
96 (such as other PHP extensions).
98 Added raw OID member for preferred record syntax (request_format_raw)
99 and returned record syntax (output_format_raw) for backend fetch method.
101 Config file yaz-config now accepts options so that it returns specific
102 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
104 Shared library support for UNIX using GNU libtool.
106 * Modified backend interface. Request/Response struct's replaced by
107 one read/write C struct. For example bend_fetchrequest and
108 bend_fetchresult have been replaced by single bend_fetch_rr struct.
109 Every handler - even search has to be registered in bend_init
110 handler. This means that the YAZ library no longer refers to
111 external functions and it makes it possible to make the whole
112 thing a single DLL/SO.
114 Added Segment handler for backend server.
116 Added Zmbol/Zebra administrative functions to YAZ client.
118 Threaded frontend server on UNIX (when POSIX Threads are available).
119 Starting the server with option -T enables multi-threading.
123 Added configure option --enable-comp/disable-comp to control use
124 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
125 located in sub directory asn.
127 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
128 in ${exec_prefix}/bin along with the other programs yaz-client and
131 GNU automake used to maintain makefiles.
135 Changed retrieval module so that we can load records with no abstract
136 syntax defined. Tagpaths in these records are fully composed of string
139 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
143 On UNIX, the generated makefile now supports a proper 'make install'.
144 The prefix can be set via GNU configure to set the install location
145 (default is /usr/local).
147 * YAZ programs client and ztest were renamed to yaz-client and
148 yaz-ztest to avoid conflicts when users install YAZ in "standard"
149 locations, such as /usr/bin,/usr/local/bin,etc.
151 * YAZ Header files were moved from include to include/yaz. YAZ Header
152 files are referred to as include <yaz/log.h> rather than <log.h>.
153 The YAZ include path (-I ..) is therefore the same as before. Programmers
154 should update their #include statements or use -Ipath/include/yaz
155 instead. The main motivation for doing this change is that YAZ header files
156 can be installed in "standard" locations /usr/include,/usr/local/include
157 without introducing conflicts, since ALL YAZ header files are stored
158 in subdirectory yaz (under /usr/include for example).
160 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
161 rather than project/workspace files. We switched because project files
162 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
165 Changed name of logging function, logf, to yaz_log, to prevent name
166 clash with some math-log functions. The YAZ header log.h defines logf
167 to yaz_log (#define) so there should be no incompatibilities by this
170 Added bend_start/bend_stop handlers for server. These handler are
171 called on start/stop of server. For windows they are called whenever
172 a service is started/stopped.
174 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
175 a fairly small ASN.1 compiler written in Tcl. The compiler is located
176 in util/yc.tcl. The auto-generated C code structures are, in a few
177 cases, incompatible with the old decoders. There are differences in the
178 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
179 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
180 The preprocessor variable ASN_COMPILED is defined when the compiled
181 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
182 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
183 wish to use the old encoders/decoders you can specify --disable-yc
186 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
187 version so that it supports both new - and old version of DB Update
189 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
190 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
191 change. The name parameter can be set to 0 in which no name is specified
192 for the construction. The macros odr_implicit and odr_explicit sets name
193 parameter to zero for the construction involved. New macros
194 odr_implicit_tag and odr_explicit_tag are similar to the others,
195 except that a name parameter is added. For programmers' that don't use
196 ODR they probably only need to change the call to z_APDU and z_External.
198 Added access control facility by interfacing the TCP wrapper library.
199 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
200 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
201 name of the daemon and enables the access control as specified in
202 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
204 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
205 den Dool <H.M.vdnDool@kub.nl>.
207 Added reference ID parameter to most functions in server API - refer
208 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
210 Changed name of ccl library to libccl.a (was ccl.a).
212 Fixed bug in decoder for Explain (Category TargetInfo).
214 Added support for GNU readline in client. Thanks to Jacob Poulsen
215 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
217 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
218 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
219 IMPLEMENTATION! This change was made to the development version before
220 the ZIG decided to retract the amendment. If any users MUST be
221 compatible with the original Update definition, PLEASE CONTACT US, and
222 we will include a separate definition corresponding to the old Update
223 ES. Note that because of the change to the ASN.1 of the
224 TaskPackageRecordStructure we cannot define a single structure that
225 will support both versions.
227 * Added const modifier to buffer parameter for some ODR/BER encoding
228 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
229 completeWAIS, odr_dumpBER.
231 Fixed bug in client.c which caused a crash when a scanResponse didn't
232 contain positionOfTerm.
234 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
235 * will cause an error in a client if a non-YAZ target sends both a
236 * list of Scan entries and non-surrogate diagnostics.
238 Retrieval module enhancements. Tag sets may be typed in the reference
239 to it. From the .abs-file the "tagset" directive takes a third optional
240 integer type for the tag set referenced. From a .tag-file the "include"
241 directive takes a third optional type as well. The old "type" directive
242 in the tag set itself is still recognized but acts as the default type
245 Backend interface change. Individual Scan terms returned from bend_scan
246 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
247 in include/backend.h.
249 Retrieval module enhancements. Multiple tag sets and attribute sets may
250 be specified in abstract syntax specs. Revised the error/warning for
251 logging messages reported by the retrieval module when reading the
254 Object Identifier system (oid_..) changed. The API is backwards
255 compatible but the oid-routines now allocates new OID's when needed.
256 Raw OID's may be specified in oid_getvalbyname.
258 YAZ now uses GNU configure to generate Makefile(s).
260 * Minor changes in some of the member names of DeleteResultSetRequest and
261 DeleteResultSetResponse. See include/proto.h.
263 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
264 and added member 'languages' in TargetInfo (which was missing).
266 Changed the way attribute sets are handled in the retrieval
267 module. These are now cached, just like the abstract syntaxes
270 Changed YAZ so that it links with compiled ASN.1.
272 Added Explain-schema definitions and mapping routines. The following
273 Explain categories have been implemented: AttributeDetails,
274 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
276 Fixed minor bug in Windows version of Server Library.
278 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
280 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
282 Added EXTERNAL: UNIverse Resource Report (non-standard).
284 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
285 ENUMERATED and SET OF.
287 * Added 'const' to some of the char pointer arguments for the
288 functions, data1_read_node, data1_getelementbytagname,
289 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
292 Fixed bug in data1_insert_taggeddata - the last_child member of
293 parent wasn't initialised.
295 * Changed data1_read_record and data1_read_node so that the supplied
296 "SGML"-buffer is read-only. In particular the resulting data1 - tree
297 doesn't refer to any parts of the "SGML"-buffer.
299 Fixed bug in server library (Windows version of statserv_remove).
301 * Changed code so that it compiles as C++. The type definition
302 of Odr_fun which is a member of Odr_arm was changed. The result is,
303 that an explicit typecast is needed for the fun pointer when
304 using Odr_arm - as in:
305 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
307 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
309 Implemented the new structured date and time definition as approved
310 by the ZIG. Added schemaId element to the specificTag in Espec-1
311 (also approved at the last ZIG). Thanks to RVDM.
313 Added some Object identifiers (RVDM).
315 Changed the Update Extended Service (RVDM).
317 Added command "refid" to client which specifies referenceId for
318 the following requests.
320 Implemented extended service handling for server. See ztest.c
321 for an example as well as backend.h. New handlers are registerd
324 * Changed interface for sort in server.
326 Added new members to statserv_options_block. It allows a server
327 to read options from another source than just the command line. Thanks
328 to Charles Woodfield.
330 * Changed definition of Z_Triple in file prt-grs.h - member boolean
331 renamed to zboolean. Some C++ compilers complained about the name.
333 Minor changes to gils.abs. Added index 's' (sort) on title
334 and date/time-last-modified.
338 Fixed bug in server library regarding inetd mode (-i). This bug
339 was introduced by release 1.4.
343 Added sort facility in client and backend server interface.
345 Fixed problem with dependencies in Makefile(s).
347 Fixed bugs for encoders/decoders of extended services and
350 Implemented sub-tree feature for schemas. Sub-trees are
351 referenced in *.abs-files. See explain.abs for an example
352 of the use of this feature.
354 Modified bib1.att; local attributes for ANY didn't include
355 ANY itself (only affects use of the retrieval module).
357 Fixed bug in plain SGML reader in function data1_read_node:
358 tags with prefix "var" was incorrectly interpreted as variants.
360 Added feature "sub-schemas" to enable references to - and definitions
361 of - group of elements.
363 * Removed member parent from type data1_element (in data1.h).
365 Implemented function odr_nullval() that returns the value of
368 * Removed member num_children from data1_node (in data1.h).
370 Made NT service interface part of the server library. The
371 function statserv_main uses the NT service when required and
372 calls the statserv_start / statserv_close routines.
374 Routine zget_SearchRequest and zget_PresentRequest fills
375 resultSetName/Id member with "default" instead of "Default".
377 Fixed memory leak in server. Request queue member wasn't freed.
379 Fixed nmem_exit so that memory is freed.
383 Revised the CCL parser utility to be thread safe.
385 Added function, oid_ent_to_oid, to replace the function
386 oid_getoidbyent, which is not thread safe.
388 * Added nmem_init and nmem_exit to initialize and release
389 NMEM resources. Function nmem_init should be called once in the
390 initial thread before NMEM/ODR is used. statserv.c and client.c
391 have been changed accordingly. The change was necessary to make
392 NMEM thread safe. The NMEM memory pool is shared amongst threads
393 in a process. Unix-based applications will still work fine without
396 Added NT Services interface for the the Z39.50 (statserv) Server.
397 Refer to the ztest.c source on the usage.
399 Windows 95/NT port using MSVC5.0. Project files are included in the
402 * Defined new 'global' handle for the retrieval (data1) system. The
403 new handled, data1_handle, describes the state of the data1 system.
404 This handle is passed as first argument to virtually all
405 data1 related routines. The functions data1_create and data1_destroy
406 creates and destroys a data1 handle respectively.
408 Added ODR encode stream member to all backend request structures
409 init, search, scan etc. This stream should be used to allocate all
410 memory used for the response when thread safe operation is needed.
412 Changed the comstack utility, cs_addstr, to be thread safe. The
413 returned hostname string returned by the function is now part the
416 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
417 function. The cs_straddr takes a COMSTACK handle as argument, so this
418 function must be used after cs_create and before bind/connect.
419 This function is thread safe.
421 Moved test server to 'ztest' directory - generic server code still
422 in 'server' directory.
424 Made prefix query (pquery.c) utility thread safe.
426 Added new function modifier YAZ_EXPORT to 'export' public DLL
427 functions when using windows (see include/yconfig.h).
429 Added definitions to the OID database (util/oid.c) (RVDM).
431 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
433 Added call to ccl_rpn_delete in client program.
435 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
436 release of RPN structure.
438 Added support for C++, headers uses extern "C" for public definitions.
439 With input from RVDM.
441 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
442 Thanks to Ronald van der Meer (RVDM).
444 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
446 Added support for private extensions to the OID database
447 (oid_setprivateoids()). Thanks to RVDM.
449 Added optional, physical ANY (key replication)
451 Fixed null-reference problem in GRS-1 output filter.
453 Proximity operator added to Prefix Query Format (PQF).
455 In test client command "base" accepts multiple databases.
457 Fixed bug in cs_close stack that caused trouble with WINSOCK.
461 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
463 Smallish bug-fixes in the new encoders/decoders (explain).
465 Bug fixed in DeleteRequest.
467 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
469 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
471 Added SOIF syntax (using private OID for now) to retrieval module and client.
473 Added Update extended service.
475 Added SearchResult-1 additional info structure.
477 Added optional CCL (ISO8777) interpreter as separate module. Available
480 --- 1.2 1996/6/10 (1st anniversary release)
482 Added Summary record syntax. Lightly tested.
484 Added OPAC record syntax. Untested.
486 Added ResourceReport service encoders/decoders. Untested.
488 Fixed bug in z_Unit - wrong tagging on unitSystem.
490 Fixed bug in the DiagRecs decoder.
492 Added options for max PDU size and session timeout to frontend-server.
494 Added documentation of query-language parsers and other supporting utilities.
496 [frontend-server] Added Attribute set to the bend_scanrequest API.
498 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
499 surrogate diagnostics were generated.
501 [retrieval] Allow multiple local values for attribute.
503 [retrieval] Allow multiple attributes per element in .abs files. index type.
505 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
509 Minor changes, mostly specific to Zebra's requirements (retrieval)
513 Repaired bug in frontend server when running multiple listening
514 endpoints in dynamic mode.
516 z_External() now won't break if a known, ASN.1 value comes encapsulated
517 in an octet-string. The value will pass through unmodified in an Odr_oct.
519 Added a bit of code to the demo client to decode & display
520 ASN.1-structured records represented in the octet-aligned branch of
521 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
523 Added z_ext_getentbyref() to the ASN module. Doc updated.
525 * Completed the SCAN definition in the ASN module. This may break SCAN
526 code based on older YAZ-versions at compile-time. The fix is easy -
529 * Added 'displayTerm' and OtherInformation to the TermInfo structure
530 under the SCAN definition. Remember to initialize this, server-people.
532 Comstack should now support the WAIS protocol in TCP/IP mode. Note
533 that this does not extend to ODR and ASN.
535 Comstack allows insertion of established socket (primarily for
536 inetd-operation of servers). Doc updated.
538 Front-end server can now start from the inetd in TCP mode. Doc
545 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
546 the rank and record number.
548 Adjustments to the frontend server.
550 Fixed diagnostic BER dumper. It ignored the file argument.
554 Various changes to retrieval module.
556 Changed the union discriminators of the protocol files from enums to
557 ints paired with #defines.
559 *Changed oident.class to oident.oclass to avoid a reserved word in C++
562 *Changed operator in the RPN structure to 'roperator', again to avoid a
565 Fixed problems in Explain decoders/encoders.
569 Memory bug in log module fixed.
573 Occasional malloc() of 0 bytes fixed in d1_espec.c.
575 Bug in Explain DatabaseInfo module fixed.
577 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
581 The shift to v1.0 signals that we now consider the *core* functionality
582 of YAZ reasonably stable (the core being more or less equivalent to
583 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
584 tested (Explain not at all - though that will happen soonish).
586 Minor changes to code to support Windows port.
588 Various minor changes after we're getting to use GRS-1 & co. more.
590 Added Espec-1 format.
592 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
593 of the protocol and it cannot be selected when encoding (maps into 'string'
594 when decoding). Needed to talk to some servers.
596 Demo client can request simple element set names.
598 Added Diagnostic Format encoders/decoders.
600 Added simple Close handling to frontend server (no hooks for resource
601 reporting yet), and demonstration client.
603 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
607 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
608 handled incorrectly when records were requested in the searchResponse. This
609 will only affect you if you use the frontend-server.
611 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
612 Test-client will ask for and print GRS1. Ztest will return dummy records
615 Added Explain encoders/decoders to the service-level API. Untested.
617 Added Extended Services: Item Order encoders and decoders to the Service-
618 level API. Untested. We could use a recent copy of the pertinent bits
619 of the ILL protocol to add those bits.
621 Added diagnostic format 1 encoders/decoders to the service-level API.
624 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
625 odr_cons.c, which causes a more correct output.
627 Fixed handling of searchRequest in frontend server. NextResultSetPosition
628 was always set to 0 when no records were requested in the searchRequest.
630 * Added better external-handling. This shouldn't harm old code that
631 *encodes* externals. It can break code that looks for a
632 'single-ASN1-type' representation, since those types that are known
633 are now decoded immediately. Look at the SUTRS sample code in
634 seshigh.c and client.c. Documentation updated.
636 Handling of structured records in bend_fetchresponse. Length -1 marks
637 structured record, type is deduced from format field.
640 Fairly quick maintenance release to add SUTRS support.
642 Fixed handling of SUTRS records in the demonstration client.
644 * Added format field to the bend_fetchrequest and bend_fetchresponce
645 structures of the backend API (frontend server). When the record is
646 returned, the value of the format field is mapped to an OID. The
647 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
648 of the record. The special value VAL_NONE in the bend_request means
649 that no specific format was requested by the client. Documentation
650 updated accordingly. Test server (ztest) will return a fixed dummy
651 SUTRS record if your client requests SUTRS.
653 Documentation updated accordingly.
655 You can now set external libraries and RANLIB support in the top-level
659 First public release.