1 Possible compatibility problems with earlier versions marked with '*'.
3 Renamed states for COMSTACKs to avoid confusion with events.
5 Implemented cs_look and proper cs_rcvconnect.
7 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
9 Configure detects POSIX threads on OpenBSD.
11 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
12 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
14 When error is returned from present handler, non-surrogate diagnostic
15 is returned in present response (and fetch handler is no longer called).
17 * Minor adjustments to pquery parser (PQF). Token characters may be
18 escaped by using backslash (C-style).
20 PQF parser allows string attribute values to be specified. For @attr,
21 non-numeric characters after the equal-sign are treated as strings
24 CCL trunction character may be defined (@truncation in file)
26 * function zget_ExtendedServicesRequest sets waitAction to
27 waitIfPossible (was wait).
29 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
32 CCL operator names may be set in field definition files (CCL_bibset).
33 See ccl/bib1 for an example.
35 Fixes in ASN.1 compiler for C++ compatibility.
37 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
38 and "op_or" to avoid conflict with C++.
40 Fixed problem with GNU readline detection on Redhat 7.0.
42 Added step-size for Scan backend handler.
44 Fixed bug that made the frontend server crash when no attribute
45 set was specified for scan.
47 Front-end server automatically switches to original working directory
48 when installed as an NT service. Previously -w had to be specified to
51 Added extended attributes for retrieval module (data1), so that data1
52 records carry d1_readXML/SGML attributes. d1_read also supports
53 null-data rules ( <tag/>)
55 On UNIX when POSIX threads are available, a separate library libyazthread
56 is created. Programmers should link with that library and the yaz library
57 when using threads. The reason for the split was that some applications
58 on Linux, such as Apache, doesn't work well when using shared objects that
61 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
62 (or any frontend server) in SSL mode by specifying ssl: followed by
63 address. Only tested on UNIX.
65 Added feature for CCL module. Virtual structure s=al or s=ol generates
66 and-list and or-list respectively instead of phrase search.
70 * Added prefix "yaz_" for the functions log_init.., log_file.. and
71 log_mask_str. This was done to avoid name conflicts with other libraries
72 (such as other PHP extensions).
74 Added raw OID member for preferred record syntax (request_format_raw)
75 and returned record syntax (output_format_raw) for backend fetch method.
77 Config file yaz-config now accepts options so that it returns specific
78 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
80 Shared library support for UNIX using GNU libtool.
82 * Modified backend interface. Request/Response struct's replaced by
83 one read/write C struct. For example bend_fetchrequest and
84 bend_fetchresult have been replaced by single bend_fetch_rr struct.
85 Every handler - even search has to be registered in bend_init
86 handler. This means that the YAZ library no longer refers to
87 external functions and it makes it possible to make the whole
88 thing a single DLL/SO.
90 Added Segment handler for backend server.
92 Added Zmbol/Zebra administrative functions to YAZ client.
94 Threaded frontend server on UNIX (when POSIX Threads are available).
95 Starting the server with option -T enables multi-threading.
99 Added configure option --enable-comp/disable-comp to control use
100 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
101 located in sub directory asn.
103 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
104 in ${exec_prefix}/bin along with the other programs yaz-client and
107 GNU automake used to maintain makefiles.
111 Changed retrieval module so that we can load records with no abstract
112 syntax defined. Tagpaths in these records are fully composed of string
115 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
119 On UNIX, the generated makefile now supports a proper 'make install'.
120 The prefix can be set via GNU configure to set the install location
121 (default is /usr/local).
123 * YAZ programs client and ztest were renamed to yaz-client and
124 yaz-ztest to avoid conflicts when users install YAZ in "standard"
125 locations, such as /usr/bin,/usr/local/bin,etc.
127 * YAZ Header files were moved from include to include/yaz. YAZ Header
128 files are referred to as include <yaz/log.h> rather than <log.h>.
129 The YAZ include path (-I ..) is therefore the same as before. Programmers
130 should update their #include statements or use -Ipath/include/yaz
131 instead. The main motivation for doing this change is that YAZ header files
132 can be installed in "standard" locations /usr/include,/usr/local/include
133 without introducing conflicts, since ALL YAZ header files are stored
134 in subdirectory yaz (under /usr/include for example).
136 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
137 rather than project/workspace files. We switched because project files
138 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
141 Changed name of logging function, logf, to yaz_log, to prevent name
142 clash with some math-log functions. The YAZ header log.h defines logf
143 to yaz_log (#define) so there should be no incompatibilities by this
146 Added bend_start/bend_stop handlers for server. These handler are
147 called on start/stop of server. For windows they are called whenever
148 a service is started/stopped.
150 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
151 a fairly small ASN.1 compiler written in Tcl. The compiler is located
152 in util/yc.tcl. The auto-generated C code structures are, in a few
153 cases, incompatible with the old decoders. There are differences in the
154 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
155 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
156 The preprocessor variable ASN_COMPILED is defined when the compiled
157 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
158 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
159 wish to use the old encoders/decoders you can specify --disable-yc
162 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
163 version so that it supports both new - and old version of DB Update
165 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
166 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
167 change. The name parameter can be set to 0 in which no name is specified
168 for the construction. The macros odr_implicit and odr_explicit sets name
169 parameter to zero for the construction involved. New macros
170 odr_implicit_tag and odr_explicit_tag are similar to the others,
171 except that a name parameter is added. For programmers' that don't use
172 ODR they probably only need to change the call to z_APDU and z_External.
174 Added access control facility by interfacing the TCP wrapper library.
175 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
176 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
177 name of the daemon and enables the access control as specified in
178 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
180 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
181 den Dool <H.M.vdnDool@kub.nl>.
183 Added reference ID parameter to most functions in server API - refer
184 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
186 Changed name of ccl library to libccl.a (was ccl.a).
188 Fixed bug in decoder for Explain (Category TargetInfo).
190 Added support for GNU readline in client. Thanks to Jacob Poulsen
191 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
193 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
194 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
195 IMPLEMENTATION! This change was made to the development version before
196 the ZIG decided to retract the amendment. If any users MUST be
197 compatible with the original Update definition, PLEASE CONTACT US, and
198 we will include a separate definition corresponding to the old Update
199 ES. Note that because of the change to the ASN.1 of the
200 TaskPackageRecordStructure we cannot define a single structure that
201 will support both versions.
203 * Added const modifier to buffer parameter for some ODR/BER encoding
204 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
205 completeWAIS, odr_dumpBER.
207 Fixed bug in client.c which caused a crash when a scanResponse didn't
208 contain positionOfTerm.
210 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
211 * will cause an error in a client if a non-YAZ target sends both a
212 * list of Scan entries and non-surrogate diagnostics.
214 Retrieval module enhancements. Tag sets may be typed in the reference
215 to it. From the .abs-file the "tagset" directive takes a third optional
216 integer type for the tag set referenced. From a .tag-file the "include"
217 directive takes a third optional type as well. The old "type" directive
218 in the tag set itself is still recognized but acts as the default type
221 Backend interface change. Individual Scan terms returned from bend_scan
222 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
223 in include/backend.h.
225 Retrieval module enhancements. Multiple tag sets and attribute sets may
226 be specified in abstract syntax specs. Revised the error/warning for
227 logging messages reported by the retrieval module when reading the
230 Object Identifier system (oid_..) changed. The API is backwards
231 compatible but the oid-routines now allocates new OID's when needed.
232 Raw OID's may be specified in oid_getvalbyname.
234 YAZ now uses GNU configure to generate Makefile(s).
236 * Minor changes in some of the member names of DeleteResultSetRequest and
237 DeleteResultSetResponse. See include/proto.h.
239 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
240 and added member 'languages' in TargetInfo (which was missing).
242 Changed the way attribute sets are handled in the retrieval
243 module. These are now cached, just like the abstract syntaxes
246 Changed YAZ so that it links with compiled ASN.1.
248 Added Explain-schema definitions and mapping routines. The following
249 Explain categories have been implemented: AttributeDetails,
250 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
252 Fixed minor bug in Windows version of Server Library.
254 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
256 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
258 Added EXTERNAL: UNIverse Resource Report (non-standard).
260 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
261 ENUMERATED and SET OF.
263 * Added 'const' to some of the char pointer arguments for the
264 functions, data1_read_node, data1_getelementbytagname,
265 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
268 Fixed bug in data1_insert_taggeddata - the last_child member of
269 parent wasn't initialised.
271 * Changed data1_read_record and data1_read_node so that the supplied
272 "SGML"-buffer is read-only. In particular the resulting data1 - tree
273 doesn't refer to any parts of the "SGML"-buffer.
275 Fixed bug in server library (Windows version of statserv_remove).
277 * Changed code so that it compiles as C++. The type definition
278 of Odr_fun which is a member of Odr_arm was changed. The result is,
279 that an explicit typecast is needed for the fun pointer when
280 using Odr_arm - as in:
281 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
283 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
285 Implemented the new structured date and time definition as approved
286 by the ZIG. Added schemaId element to the specificTag in Espec-1
287 (also approved at the last ZIG). Thanks to RVDM.
289 Added some Object identifiers (RVDM).
291 Changed the Update Extended Service (RVDM).
293 Added command "refid" to client which specifies referenceId for
294 the following requests.
296 Implemented extended service handling for server. See ztest.c
297 for an example as well as backend.h. New handlers are registerd
300 * Changed interface for sort in server.
302 Added new members to statserv_options_block. It allows a server
303 to read options from another source than just the command line. Thanks
304 to Charles Woodfield.
306 * Changed definition of Z_Triple in file prt-grs.h - member boolean
307 renamed to zboolean. Some C++ compilers complained about the name.
309 Minor changes to gils.abs. Added index 's' (sort) on title
310 and date/time-last-modified.
314 Fixed bug in server library regarding inetd mode (-i). This bug
315 was introduced by release 1.4.
319 Added sort facility in client and backend server interface.
321 Fixed problem with dependencies in Makefile(s).
323 Fixed bugs for encoders/decoders of extended services and
326 Implemented sub-tree feature for schemas. Sub-trees are
327 referenced in *.abs-files. See explain.abs for an example
328 of the use of this feature.
330 Modified bib1.att; local attributes for ANY didn't include
331 ANY itself (only affects use of the retrieval module).
333 Fixed bug in plain SGML reader in function data1_read_node:
334 tags with prefix "var" was incorrectly interpreted as variants.
336 Added feature "sub-schemas" to enable references to - and definitions
337 of - group of elements.
339 * Removed member parent from type data1_element (in data1.h).
341 Implemented function odr_nullval() that returns the value of
344 * Removed member num_children from data1_node (in data1.h).
346 Made NT service interface part of the server library. The
347 function statserv_main uses the NT service when required and
348 calls the statserv_start / statserv_close routines.
350 Routine zget_SearchRequest and zget_PresentRequest fills
351 resultSetName/Id member with "default" instead of "Default".
353 Fixed memory leak in server. Request queue member wasn't freed.
355 Fixed nmem_exit so that memory is freed.
359 Revised the CCL parser utility to be thread safe.
361 Added function, oid_ent_to_oid, to replace the function
362 oid_getoidbyent, which is not thread safe.
364 * Added nmem_init and nmem_exit to initialize and release
365 NMEM resources. Function nmem_init should be called once in the
366 initial thread before NMEM/ODR is used. statserv.c and client.c
367 have been changed accordingly. The change was necessary to make
368 NMEM thread safe. The NMEM memory pool is shared amongst threads
369 in a process. Unix-based applications will still work fine without
372 Added NT Services interface for the the Z39.50 (statserv) Server.
373 Refer to the ztest.c source on the usage.
375 Windows 95/NT port using MSVC5.0. Project files are included in the
378 * Defined new 'global' handle for the retrieval (data1) system. The
379 new handled, data1_handle, describes the state of the data1 system.
380 This handle is passed as first argument to virtually all
381 data1 related routines. The functions data1_create and data1_destroy
382 creates and destroys a data1 handle respectively.
384 Added ODR encode stream member to all backend request structures
385 init, search, scan etc. This stream should be used to allocate all
386 memory used for the response when thread safe operation is needed.
388 Changed the comstack utility, cs_addstr, to be thread safe. The
389 returned hostname string returned by the function is now part the
392 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
393 function. The cs_straddr takes a COMSTACK handle as argument, so this
394 function must be used after cs_create and before bind/connect.
395 This function is thread safe.
397 Moved test server to 'ztest' directory - generic server code still
398 in 'server' directory.
400 Made prefix query (pquery.c) utility thread safe.
402 Added new function modifier YAZ_EXPORT to 'export' public DLL
403 functions when using windows (see include/yconfig.h).
405 Added definitions to the OID database (util/oid.c) (RVDM).
407 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
409 Added call to ccl_rpn_delete in client program.
411 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
412 release of RPN structure.
414 Added support for C++, headers uses extern "C" for public definitions.
415 With input from RVDM.
417 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
418 Thanks to Ronald van der Meer (RVDM).
420 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
422 Added support for private extensions to the OID database
423 (oid_setprivateoids()). Thanks to RVDM.
425 Added optional, physical ANY (key replication)
427 Fixed null-reference problem in GRS-1 output filter.
429 Proximity operator added to Prefix Query Format (PQF).
431 In test client command "base" accepts multiple databases.
433 Fixed bug in cs_close stack that caused trouble with WINSOCK.
437 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
439 Smallish bug-fixes in the new encoders/decoders (explain).
441 Bug fixed in DeleteRequest.
443 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
445 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
447 Added SOIF syntax (using private OID for now) to retrieval module and client.
449 Added Update extended service.
451 Added SearchResult-1 additional info structure.
453 Added optional CCL (ISO8777) interpreter as separate module. Available
456 --- 1.2 1996/6/10 (1st anniversary release)
458 Added Summary record syntax. Lightly tested.
460 Added OPAC record syntax. Untested.
462 Added ResourceReport service encoders/decoders. Untested.
464 Fixed bug in z_Unit - wrong tagging on unitSystem.
466 Fixed bug in the DiagRecs decoder.
468 Added options for max PDU size and session timeout to frontend-server.
470 Added documentation of query-language parsers and other supporting utilities.
472 [frontend-server] Added Attribute set to the bend_scanrequest API.
474 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
475 surrogate diagnostics were generated.
477 [retrieval] Allow multiple local values for attribute.
479 [retrieval] Allow multiple attributes per element in .abs files. index type.
481 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
485 Minor changes, mostly specific to Zebra's requirements (retrieval)
489 Repaired bug in frontend server when running multiple listening
490 endpoints in dynamic mode.
492 z_External() now won't break if a known, ASN.1 value comes encapsulated
493 in an octet-string. The value will pass through unmodified in an Odr_oct.
495 Added a bit of code to the demo client to decode & display
496 ASN.1-structured records represented in the octet-aligned branch of
497 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
499 Added z_ext_getentbyref() to the ASN module. Doc updated.
501 * Completed the SCAN definition in the ASN module. This may break SCAN
502 code based on older YAZ-versions at compile-time. The fix is easy -
505 * Added 'displayTerm' and OtherInformation to the TermInfo structure
506 under the SCAN definition. Remember to initialize this, server-people.
508 Comstack should now support the WAIS protocol in TCP/IP mode. Note
509 that this does not extend to ODR and ASN.
511 Comstack allows insertion of established socket (primarily for
512 inetd-operation of servers). Doc updated.
514 Front-end server can now start from the inetd in TCP mode. Doc
521 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
522 the rank and record number.
524 Adjustments to the frontend server.
526 Fixed diagnostic BER dumper. It ignored the file argument.
530 Various changes to retrieval module.
532 Changed the union discriminators of the protocol files from enums to
533 ints paired with #defines.
535 *Changed oident.class to oident.oclass to avoid a reserved word in C++
538 *Changed operator in the RPN structure to 'roperator', again to avoid a
541 Fixed problems in Explain decoders/encoders.
545 Memory bug in log module fixed.
549 Occasional malloc() of 0 bytes fixed in d1_espec.c.
551 Bug in Explain DatabaseInfo module fixed.
553 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
557 The shift to v1.0 signals that we now consider the *core* functionality
558 of YAZ reasonably stable (the core being more or less equivalent to
559 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
560 tested (Explain not at all - though that will happen soonish).
562 Minor changes to code to support Windows port.
564 Various minor changes after we're getting to use GRS-1 & co. more.
566 Added Espec-1 format.
568 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
569 of the protocol and it cannot be selected when encoding (maps into 'string'
570 when decoding). Needed to talk to some servers.
572 Demo client can request simple element set names.
574 Added Diagnostic Format encoders/decoders.
576 Added simple Close handling to frontend server (no hooks for resource
577 reporting yet), and demonstration client.
579 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
583 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
584 handled incorrectly when records were requested in the searchResponse. This
585 will only affect you if you use the frontend-server.
587 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
588 Test-client will ask for and print GRS1. Ztest will return dummy records
591 Added Explain encoders/decoders to the service-level API. Untested.
593 Added Extended Services: Item Order encoders and decoders to the Service-
594 level API. Untested. We could use a recent copy of the pertinent bits
595 of the ILL protocol to add those bits.
597 Added diagnostic format 1 encoders/decoders to the service-level API.
600 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
601 odr_cons.c, which causes a more correct output.
603 Fixed handling of searchRequest in frontend server. NextResultSetPosition
604 was always set to 0 when no records were requested in the searchRequest.
606 * Added better external-handling. This shouldn't harm old code that
607 *encodes* externals. It can break code that looks for a
608 'single-ASN1-type' representation, since those types that are known
609 are now decoded immediately. Look at the SUTRS sample code in
610 seshigh.c and client.c. Documentation updated.
612 Handling of structured records in bend_fetchresponse. Length -1 marks
613 structured record, type is deduced from format field.
616 Fairly quick maintenance release to add SUTRS support.
618 Fixed handling of SUTRS records in the demonstration client.
620 * Added format field to the bend_fetchrequest and bend_fetchresponce
621 structures of the backend API (frontend server). When the record is
622 returned, the value of the format field is mapped to an OID. The
623 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
624 of the record. The special value VAL_NONE in the bend_request means
625 that no specific format was requested by the client. Documentation
626 updated accordingly. Test server (ztest) will return a fixed dummy
627 SUTRS record if your client requests SUTRS.
629 Documentation updated accordingly.
631 You can now set external libraries and RANLIB support in the top-level
635 First public release.