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