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