1 Possible compatibility problems with earlier versions marked with '*'.
5 Fix bug: local attribute wasn't set correctly in PQF strings.
9 * Old Z39.50 codecs no longer supported.
11 Added ZOOM C binding. See http://zoom.z3950.org/
13 Renamed states for COMSTACKs to avoid confusion with events.
15 Implemented cs_look and proper cs_rcvconnect.
17 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
19 Configure detects POSIX threads on OpenBSD.
21 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
22 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
24 When error is returned from present handler, non-surrogate diagnostic
25 is returned in present response (and fetch handler is no longer called).
27 * Minor adjustments to pquery parser (PQF). Token characters may be
28 escaped by using backslash (C-style).
30 PQF parser allows string attribute values to be specified. For @attr,
31 non-numeric characters after the equal-sign are treated as strings
34 CCL trunction character may be defined (@truncation in file)
36 * function zget_ExtendedServicesRequest sets waitAction to
37 waitIfPossible (was wait).
39 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
42 CCL operator names may be set in field definition files (CCL_bibset).
43 See ccl/bib1 for an example.
45 Fixes in ASN.1 compiler for C++ compatibility.
47 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
48 and "op_or" to avoid conflict with C++.
50 Fixed problem with GNU readline detection on Redhat 7.0.
52 Added step-size for Scan backend handler.
54 Fixed bug that made the frontend server crash when no attribute
55 set was specified for scan.
57 Front-end server automatically switches to original working directory
58 when installed as an NT service. Previously -w had to be specified to
61 Added extended attributes for retrieval module (data1), so that data1
62 records carry d1_readXML/SGML attributes. d1_read also supports
63 null-data rules ( <tag/>)
65 On UNIX when POSIX threads are available, a separate library libyazthread
66 is created. Programmers should link with that library and the yaz library
67 when using threads. The reason for the split was that some applications
68 on Linux, such as Apache, doesn't work well when using shared objects that
71 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
72 (or any frontend server) in SSL mode by specifying ssl: followed by
73 address. Only tested on UNIX.
75 Added feature for CCL module. Virtual structure s=al or s=ol generates
76 and-list and or-list respectively instead of phrase search.
80 * Added prefix "yaz_" for the functions log_init.., log_file.. and
81 log_mask_str. This was done to avoid name conflicts with other libraries
82 (such as other PHP extensions).
84 Added raw OID member for preferred record syntax (request_format_raw)
85 and returned record syntax (output_format_raw) for backend fetch method.
87 Config file yaz-config now accepts options so that it returns specific
88 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
90 Shared library support for UNIX using GNU libtool.
92 * Modified backend interface. Request/Response struct's replaced by
93 one read/write C struct. For example bend_fetchrequest and
94 bend_fetchresult have been replaced by single bend_fetch_rr struct.
95 Every handler - even search has to be registered in bend_init
96 handler. This means that the YAZ library no longer refers to
97 external functions and it makes it possible to make the whole
98 thing a single DLL/SO.
100 Added Segment handler for backend server.
102 Added Zmbol/Zebra administrative functions to YAZ client.
104 Threaded frontend server on UNIX (when POSIX Threads are available).
105 Starting the server with option -T enables multi-threading.
109 Added configure option --enable-comp/disable-comp to control use
110 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
111 located in sub directory asn.
113 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
114 in ${exec_prefix}/bin along with the other programs yaz-client and
117 GNU automake used to maintain makefiles.
121 Changed retrieval module so that we can load records with no abstract
122 syntax defined. Tagpaths in these records are fully composed of string
125 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
129 On UNIX, the generated makefile now supports a proper 'make install'.
130 The prefix can be set via GNU configure to set the install location
131 (default is /usr/local).
133 * YAZ programs client and ztest were renamed to yaz-client and
134 yaz-ztest to avoid conflicts when users install YAZ in "standard"
135 locations, such as /usr/bin,/usr/local/bin,etc.
137 * YAZ Header files were moved from include to include/yaz. YAZ Header
138 files are referred to as include <yaz/log.h> rather than <log.h>.
139 The YAZ include path (-I ..) is therefore the same as before. Programmers
140 should update their #include statements or use -Ipath/include/yaz
141 instead. The main motivation for doing this change is that YAZ header files
142 can be installed in "standard" locations /usr/include,/usr/local/include
143 without introducing conflicts, since ALL YAZ header files are stored
144 in subdirectory yaz (under /usr/include for example).
146 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
147 rather than project/workspace files. We switched because project files
148 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
151 Changed name of logging function, logf, to yaz_log, to prevent name
152 clash with some math-log functions. The YAZ header log.h defines logf
153 to yaz_log (#define) so there should be no incompatibilities by this
156 Added bend_start/bend_stop handlers for server. These handler are
157 called on start/stop of server. For windows they are called whenever
158 a service is started/stopped.
160 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
161 a fairly small ASN.1 compiler written in Tcl. The compiler is located
162 in util/yc.tcl. The auto-generated C code structures are, in a few
163 cases, incompatible with the old decoders. There are differences in the
164 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
165 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
166 The preprocessor variable ASN_COMPILED is defined when the compiled
167 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
168 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
169 wish to use the old encoders/decoders you can specify --disable-yc
172 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
173 version so that it supports both new - and old version of DB Update
175 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
176 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
177 change. The name parameter can be set to 0 in which no name is specified
178 for the construction. The macros odr_implicit and odr_explicit sets name
179 parameter to zero for the construction involved. New macros
180 odr_implicit_tag and odr_explicit_tag are similar to the others,
181 except that a name parameter is added. For programmers' that don't use
182 ODR they probably only need to change the call to z_APDU and z_External.
184 Added access control facility by interfacing the TCP wrapper library.
185 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
186 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
187 name of the daemon and enables the access control as specified in
188 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
190 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
191 den Dool <H.M.vdnDool@kub.nl>.
193 Added reference ID parameter to most functions in server API - refer
194 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
196 Changed name of ccl library to libccl.a (was ccl.a).
198 Fixed bug in decoder for Explain (Category TargetInfo).
200 Added support for GNU readline in client. Thanks to Jacob Poulsen
201 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
203 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
204 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
205 IMPLEMENTATION! This change was made to the development version before
206 the ZIG decided to retract the amendment. If any users MUST be
207 compatible with the original Update definition, PLEASE CONTACT US, and
208 we will include a separate definition corresponding to the old Update
209 ES. Note that because of the change to the ASN.1 of the
210 TaskPackageRecordStructure we cannot define a single structure that
211 will support both versions.
213 * Added const modifier to buffer parameter for some ODR/BER encoding
214 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
215 completeWAIS, odr_dumpBER.
217 Fixed bug in client.c which caused a crash when a scanResponse didn't
218 contain positionOfTerm.
220 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
221 * will cause an error in a client if a non-YAZ target sends both a
222 * list of Scan entries and non-surrogate diagnostics.
224 Retrieval module enhancements. Tag sets may be typed in the reference
225 to it. From the .abs-file the "tagset" directive takes a third optional
226 integer type for the tag set referenced. From a .tag-file the "include"
227 directive takes a third optional type as well. The old "type" directive
228 in the tag set itself is still recognized but acts as the default type
231 Backend interface change. Individual Scan terms returned from bend_scan
232 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
233 in include/backend.h.
235 Retrieval module enhancements. Multiple tag sets and attribute sets may
236 be specified in abstract syntax specs. Revised the error/warning for
237 logging messages reported by the retrieval module when reading the
240 Object Identifier system (oid_..) changed. The API is backwards
241 compatible but the oid-routines now allocates new OID's when needed.
242 Raw OID's may be specified in oid_getvalbyname.
244 YAZ now uses GNU configure to generate Makefile(s).
246 * Minor changes in some of the member names of DeleteResultSetRequest and
247 DeleteResultSetResponse. See include/proto.h.
249 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
250 and added member 'languages' in TargetInfo (which was missing).
252 Changed the way attribute sets are handled in the retrieval
253 module. These are now cached, just like the abstract syntaxes
256 Changed YAZ so that it links with compiled ASN.1.
258 Added Explain-schema definitions and mapping routines. The following
259 Explain categories have been implemented: AttributeDetails,
260 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
262 Fixed minor bug in Windows version of Server Library.
264 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
266 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
268 Added EXTERNAL: UNIverse Resource Report (non-standard).
270 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
271 ENUMERATED and SET OF.
273 * Added 'const' to some of the char pointer arguments for the
274 functions, data1_read_node, data1_getelementbytagname,
275 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
278 Fixed bug in data1_insert_taggeddata - the last_child member of
279 parent wasn't initialised.
281 * Changed data1_read_record and data1_read_node so that the supplied
282 "SGML"-buffer is read-only. In particular the resulting data1 - tree
283 doesn't refer to any parts of the "SGML"-buffer.
285 Fixed bug in server library (Windows version of statserv_remove).
287 * Changed code so that it compiles as C++. The type definition
288 of Odr_fun which is a member of Odr_arm was changed. The result is,
289 that an explicit typecast is needed for the fun pointer when
290 using Odr_arm - as in:
291 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
293 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
295 Implemented the new structured date and time definition as approved
296 by the ZIG. Added schemaId element to the specificTag in Espec-1
297 (also approved at the last ZIG). Thanks to RVDM.
299 Added some Object identifiers (RVDM).
301 Changed the Update Extended Service (RVDM).
303 Added command "refid" to client which specifies referenceId for
304 the following requests.
306 Implemented extended service handling for server. See ztest.c
307 for an example as well as backend.h. New handlers are registerd
310 * Changed interface for sort in server.
312 Added new members to statserv_options_block. It allows a server
313 to read options from another source than just the command line. Thanks
314 to Charles Woodfield.
316 * Changed definition of Z_Triple in file prt-grs.h - member boolean
317 renamed to zboolean. Some C++ compilers complained about the name.
319 Minor changes to gils.abs. Added index 's' (sort) on title
320 and date/time-last-modified.
324 Fixed bug in server library regarding inetd mode (-i). This bug
325 was introduced by release 1.4.
329 Added sort facility in client and backend server interface.
331 Fixed problem with dependencies in Makefile(s).
333 Fixed bugs for encoders/decoders of extended services and
336 Implemented sub-tree feature for schemas. Sub-trees are
337 referenced in *.abs-files. See explain.abs for an example
338 of the use of this feature.
340 Modified bib1.att; local attributes for ANY didn't include
341 ANY itself (only affects use of the retrieval module).
343 Fixed bug in plain SGML reader in function data1_read_node:
344 tags with prefix "var" was incorrectly interpreted as variants.
346 Added feature "sub-schemas" to enable references to - and definitions
347 of - group of elements.
349 * Removed member parent from type data1_element (in data1.h).
351 Implemented function odr_nullval() that returns the value of
354 * Removed member num_children from data1_node (in data1.h).
356 Made NT service interface part of the server library. The
357 function statserv_main uses the NT service when required and
358 calls the statserv_start / statserv_close routines.
360 Routine zget_SearchRequest and zget_PresentRequest fills
361 resultSetName/Id member with "default" instead of "Default".
363 Fixed memory leak in server. Request queue member wasn't freed.
365 Fixed nmem_exit so that memory is freed.
369 Revised the CCL parser utility to be thread safe.
371 Added function, oid_ent_to_oid, to replace the function
372 oid_getoidbyent, which is not thread safe.
374 * Added nmem_init and nmem_exit to initialize and release
375 NMEM resources. Function nmem_init should be called once in the
376 initial thread before NMEM/ODR is used. statserv.c and client.c
377 have been changed accordingly. The change was necessary to make
378 NMEM thread safe. The NMEM memory pool is shared amongst threads
379 in a process. Unix-based applications will still work fine without
382 Added NT Services interface for the the Z39.50 (statserv) Server.
383 Refer to the ztest.c source on the usage.
385 Windows 95/NT port using MSVC5.0. Project files are included in the
388 * Defined new 'global' handle for the retrieval (data1) system. The
389 new handled, data1_handle, describes the state of the data1 system.
390 This handle is passed as first argument to virtually all
391 data1 related routines. The functions data1_create and data1_destroy
392 creates and destroys a data1 handle respectively.
394 Added ODR encode stream member to all backend request structures
395 init, search, scan etc. This stream should be used to allocate all
396 memory used for the response when thread safe operation is needed.
398 Changed the comstack utility, cs_addstr, to be thread safe. The
399 returned hostname string returned by the function is now part the
402 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
403 function. The cs_straddr takes a COMSTACK handle as argument, so this
404 function must be used after cs_create and before bind/connect.
405 This function is thread safe.
407 Moved test server to 'ztest' directory - generic server code still
408 in 'server' directory.
410 Made prefix query (pquery.c) utility thread safe.
412 Added new function modifier YAZ_EXPORT to 'export' public DLL
413 functions when using windows (see include/yconfig.h).
415 Added definitions to the OID database (util/oid.c) (RVDM).
417 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
419 Added call to ccl_rpn_delete in client program.
421 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
422 release of RPN structure.
424 Added support for C++, headers uses extern "C" for public definitions.
425 With input from RVDM.
427 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
428 Thanks to Ronald van der Meer (RVDM).
430 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
432 Added support for private extensions to the OID database
433 (oid_setprivateoids()). Thanks to RVDM.
435 Added optional, physical ANY (key replication)
437 Fixed null-reference problem in GRS-1 output filter.
439 Proximity operator added to Prefix Query Format (PQF).
441 In test client command "base" accepts multiple databases.
443 Fixed bug in cs_close stack that caused trouble with WINSOCK.
447 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
449 Smallish bug-fixes in the new encoders/decoders (explain).
451 Bug fixed in DeleteRequest.
453 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
455 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
457 Added SOIF syntax (using private OID for now) to retrieval module and client.
459 Added Update extended service.
461 Added SearchResult-1 additional info structure.
463 Added optional CCL (ISO8777) interpreter as separate module. Available
466 --- 1.2 1996/6/10 (1st anniversary release)
468 Added Summary record syntax. Lightly tested.
470 Added OPAC record syntax. Untested.
472 Added ResourceReport service encoders/decoders. Untested.
474 Fixed bug in z_Unit - wrong tagging on unitSystem.
476 Fixed bug in the DiagRecs decoder.
478 Added options for max PDU size and session timeout to frontend-server.
480 Added documentation of query-language parsers and other supporting utilities.
482 [frontend-server] Added Attribute set to the bend_scanrequest API.
484 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
485 surrogate diagnostics were generated.
487 [retrieval] Allow multiple local values for attribute.
489 [retrieval] Allow multiple attributes per element in .abs files. index type.
491 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
495 Minor changes, mostly specific to Zebra's requirements (retrieval)
499 Repaired bug in frontend server when running multiple listening
500 endpoints in dynamic mode.
502 z_External() now won't break if a known, ASN.1 value comes encapsulated
503 in an octet-string. The value will pass through unmodified in an Odr_oct.
505 Added a bit of code to the demo client to decode & display
506 ASN.1-structured records represented in the octet-aligned branch of
507 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
509 Added z_ext_getentbyref() to the ASN module. Doc updated.
511 * Completed the SCAN definition in the ASN module. This may break SCAN
512 code based on older YAZ-versions at compile-time. The fix is easy -
515 * Added 'displayTerm' and OtherInformation to the TermInfo structure
516 under the SCAN definition. Remember to initialize this, server-people.
518 Comstack should now support the WAIS protocol in TCP/IP mode. Note
519 that this does not extend to ODR and ASN.
521 Comstack allows insertion of established socket (primarily for
522 inetd-operation of servers). Doc updated.
524 Front-end server can now start from the inetd in TCP mode. Doc
531 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
532 the rank and record number.
534 Adjustments to the frontend server.
536 Fixed diagnostic BER dumper. It ignored the file argument.
540 Various changes to retrieval module.
542 Changed the union discriminators of the protocol files from enums to
543 ints paired with #defines.
545 *Changed oident.class to oident.oclass to avoid a reserved word in C++
548 *Changed operator in the RPN structure to 'roperator', again to avoid a
551 Fixed problems in Explain decoders/encoders.
555 Memory bug in log module fixed.
559 Occasional malloc() of 0 bytes fixed in d1_espec.c.
561 Bug in Explain DatabaseInfo module fixed.
563 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
567 The shift to v1.0 signals that we now consider the *core* functionality
568 of YAZ reasonably stable (the core being more or less equivalent to
569 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
570 tested (Explain not at all - though that will happen soonish).
572 Minor changes to code to support Windows port.
574 Various minor changes after we're getting to use GRS-1 & co. more.
576 Added Espec-1 format.
578 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
579 of the protocol and it cannot be selected when encoding (maps into 'string'
580 when decoding). Needed to talk to some servers.
582 Demo client can request simple element set names.
584 Added Diagnostic Format encoders/decoders.
586 Added simple Close handling to frontend server (no hooks for resource
587 reporting yet), and demonstration client.
589 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
593 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
594 handled incorrectly when records were requested in the searchResponse. This
595 will only affect you if you use the frontend-server.
597 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
598 Test-client will ask for and print GRS1. Ztest will return dummy records
601 Added Explain encoders/decoders to the service-level API. Untested.
603 Added Extended Services: Item Order encoders and decoders to the Service-
604 level API. Untested. We could use a recent copy of the pertinent bits
605 of the ILL protocol to add those bits.
607 Added diagnostic format 1 encoders/decoders to the service-level API.
610 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
611 odr_cons.c, which causes a more correct output.
613 Fixed handling of searchRequest in frontend server. NextResultSetPosition
614 was always set to 0 when no records were requested in the searchRequest.
616 * Added better external-handling. This shouldn't harm old code that
617 *encodes* externals. It can break code that looks for a
618 'single-ASN1-type' representation, since those types that are known
619 are now decoded immediately. Look at the SUTRS sample code in
620 seshigh.c and client.c. Documentation updated.
622 Handling of structured records in bend_fetchresponse. Length -1 marks
623 structured record, type is deduced from format field.
626 Fairly quick maintenance release to add SUTRS support.
628 Fixed handling of SUTRS records in the demonstration client.
630 * Added format field to the bend_fetchrequest and bend_fetchresponce
631 structures of the backend API (frontend server). When the record is
632 returned, the value of the format field is mapped to an OID. The
633 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
634 of the record. The special value VAL_NONE in the bend_request means
635 that no specific format was requested by the client. Documentation
636 updated accordingly. Test server (ztest) will return a fixed dummy
637 SUTRS record if your client requests SUTRS.
639 Documentation updated accordingly.
641 You can now set external libraries and RANLIB support in the top-level
645 First public release.