1 Possible compatibility problems with earlier versions marked with '*'.
3 Configure detects POSIX threads on OpenBSD.
5 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
6 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
8 When error is returned from present handler, non-surrogate diagnostic
9 is returned in present response (and fetch handler is no longer called).
11 * Minor adjustments to pquery parser (PQF). Token characters may be
12 escaped by using backslash (C-style).
14 PQF parser allows string attribute values to be specified. For @attr,
15 non-numeric characters after the equal-sign are treated as strings
18 CCL trunction character may be defined (@truncation in file)
20 * function zget_ExtendedServicesRequest sets waitAction to
21 waitIfPossible (was wait).
23 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
26 CCL operator names may be set in field definition files (CCL_bibset).
27 See ccl/bib1 for an example.
29 Fixes in ASN.1 compiler for C++ compatibility.
31 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
32 and "op_or" to avoid conflict with C++.
34 Fixed problem with GNU readline detection on Redhat 7.0.
36 Added step-size for Scan backend handler.
38 Fixed bug that made the frontend server crash when no attribute
39 set was specified for scan.
41 Front-end server automatically switches to original working directory
42 when installed as an NT service. Previously -w had to be specified to
45 Added extended attributes for retrieval module (data1), so that data1
46 records carry d1_readXML/SGML attributes. d1_read also supports
47 null-data rules ( <tag/>)
49 On UNIX when POSIX threads are available, a separate library libyazthread
50 is created. Programmers should link with that library and the yaz library
51 when using threads. The reason for the split was that some applications
52 on Linux, such as Apache, doesn't work well when using shared objects that
55 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
56 (or any frontend server) in SSL mode by specifying ssl: followed by
57 address. Only tested on UNIX.
59 Added feature for CCL module. Virtual structure s=al or s=ol generates
60 and-list and or-list respectively instead of phrase search.
64 * Added prefix "yaz_" for the functions log_init.., log_file.. and
65 log_mask_str. This was done to avoid name conflicts with other libraries
66 (such as other PHP extensions).
68 Added raw OID member for preferred record syntax (request_format_raw)
69 and returned record syntax (output_format_raw) for backend fetch method.
71 Config file yaz-config now accepts options so that it returns specific
72 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
74 Shared library support for UNIX using GNU libtool.
76 * Modified backend interface. Request/Response struct's replaced by
77 one read/write C struct. For example bend_fetchrequest and
78 bend_fetchresult have been replaced by single bend_fetch_rr struct.
79 Every handler - even search has to be registered in bend_init
80 handler. This means that the YAZ library no longer refers to
81 external functions and it makes it possible to make the whole
82 thing a single DLL/SO.
84 Added Segment handler for backend server.
86 Added Zmbol/Zebra administrative functions to YAZ client.
88 Threaded frontend server on UNIX (when POSIX Threads are available).
89 Starting the server with option -T enables multi-threading.
93 Added configure option --enable-comp/disable-comp to control use
94 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
95 located in sub directory asn.
97 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
98 in ${exec_prefix}/bin along with the other programs yaz-client and
101 GNU automake used to maintain makefiles.
105 Changed retrieval module so that we can load records with no abstract
106 syntax defined. Tagpaths in these records are fully composed of string
109 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
113 On UNIX, the generated makefile now supports a proper 'make install'.
114 The prefix can be set via GNU configure to set the install location
115 (default is /usr/local).
117 * YAZ programs client and ztest were renamed to yaz-client and
118 yaz-ztest to avoid conflicts when users install YAZ in "standard"
119 locations, such as /usr/bin,/usr/local/bin,etc.
121 * YAZ Header files were moved from include to include/yaz. YAZ Header
122 files are referred to as include <yaz/log.h> rather than <log.h>.
123 The YAZ include path (-I ..) is therefore the same as before. Programmers
124 should update their #include statements or use -Ipath/include/yaz
125 instead. The main motivation for doing this change is that YAZ header files
126 can be installed in "standard" locations /usr/include,/usr/local/include
127 without introducing conflicts, since ALL YAZ header files are stored
128 in subdirectory yaz (under /usr/include for example).
130 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
131 rather than project/workspace files. We switched because project files
132 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
135 Changed name of logging function, logf, to yaz_log, to prevent name
136 clash with some math-log functions. The YAZ header log.h defines logf
137 to yaz_log (#define) so there should be no incompatibilities by this
140 Added bend_start/bend_stop handlers for server. These handler are
141 called on start/stop of server. For windows they are called whenever
142 a service is started/stopped.
144 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
145 a fairly small ASN.1 compiler written in Tcl. The compiler is located
146 in util/yc.tcl. The auto-generated C code structures are, in a few
147 cases, incompatible with the old decoders. There are differences in the
148 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
149 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
150 The preprocessor variable ASN_COMPILED is defined when the compiled
151 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
152 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
153 wish to use the old encoders/decoders you can specify --disable-yc
156 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
157 version so that it supports both new - and old version of DB Update
159 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
160 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
161 change. The name parameter can be set to 0 in which no name is specified
162 for the construction. The macros odr_implicit and odr_explicit sets name
163 parameter to zero for the construction involved. New macros
164 odr_implicit_tag and odr_explicit_tag are similar to the others,
165 except that a name parameter is added. For programmers' that don't use
166 ODR they probably only need to change the call to z_APDU and z_External.
168 Added access control facility by interfacing the TCP wrapper library.
169 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
170 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
171 name of the daemon and enables the access control as specified in
172 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
174 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
175 den Dool <H.M.vdnDool@kub.nl>.
177 Added reference ID parameter to most functions in server API - refer
178 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
180 Changed name of ccl library to libccl.a (was ccl.a).
182 Fixed bug in decoder for Explain (Category TargetInfo).
184 Added support for GNU readline in client. Thanks to Jacob Poulsen
185 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
187 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
188 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
189 IMPLEMENTATION! This change was made to the development version before
190 the ZIG decided to retract the amendment. If any users MUST be
191 compatible with the original Update definition, PLEASE CONTACT US, and
192 we will include a separate definition corresponding to the old Update
193 ES. Note that because of the change to the ASN.1 of the
194 TaskPackageRecordStructure we cannot define a single structure that
195 will support both versions.
197 * Added const modifier to buffer parameter for some ODR/BER encoding
198 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
199 completeWAIS, odr_dumpBER.
201 Fixed bug in client.c which caused a crash when a scanResponse didn't
202 contain positionOfTerm.
204 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
205 * will cause an error in a client if a non-YAZ target sends both a
206 * list of Scan entries and non-surrogate diagnostics.
208 Retrieval module enhancements. Tag sets may be typed in the reference
209 to it. From the .abs-file the "tagset" directive takes a third optional
210 integer type for the tag set referenced. From a .tag-file the "include"
211 directive takes a third optional type as well. The old "type" directive
212 in the tag set itself is still recognized but acts as the default type
215 Backend interface change. Individual Scan terms returned from bend_scan
216 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
217 in include/backend.h.
219 Retrieval module enhancements. Multiple tag sets and attribute sets may
220 be specified in abstract syntax specs. Revised the error/warning for
221 logging messages reported by the retrieval module when reading the
224 Object Identifier system (oid_..) changed. The API is backwards
225 compatible but the oid-routines now allocates new OID's when needed.
226 Raw OID's may be specified in oid_getvalbyname.
228 YAZ now uses GNU configure to generate Makefile(s).
230 * Minor changes in some of the member names of DeleteResultSetRequest and
231 DeleteResultSetResponse. See include/proto.h.
233 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
234 and added member 'languages' in TargetInfo (which was missing).
236 Changed the way attribute sets are handled in the retrieval
237 module. These are now cached, just like the abstract syntaxes
240 Changed YAZ so that it links with compiled ASN.1.
242 Added Explain-schema definitions and mapping routines. The following
243 Explain categories have been implemented: AttributeDetails,
244 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
246 Fixed minor bug in Windows version of Server Library.
248 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
250 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
252 Added EXTERNAL: UNIverse Resource Report (non-standard).
254 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
255 ENUMERATED and SET OF.
257 * Added 'const' to some of the char pointer arguments for the
258 functions, data1_read_node, data1_getelementbytagname,
259 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
262 Fixed bug in data1_insert_taggeddata - the last_child member of
263 parent wasn't initialised.
265 * Changed data1_read_record and data1_read_node so that the supplied
266 "SGML"-buffer is read-only. In particular the resulting data1 - tree
267 doesn't refer to any parts of the "SGML"-buffer.
269 Fixed bug in server library (Windows version of statserv_remove).
271 * Changed code so that it compiles as C++. The type definition
272 of Odr_fun which is a member of Odr_arm was changed. The result is,
273 that an explicit typecast is needed for the fun pointer when
274 using Odr_arm - as in:
275 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
277 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
279 Implemented the new structured date and time definition as approved
280 by the ZIG. Added schemaId element to the specificTag in Espec-1
281 (also approved at the last ZIG). Thanks to RVDM.
283 Added some Object identifiers (RVDM).
285 Changed the Update Extended Service (RVDM).
287 Added command "refid" to client which specifies referenceId for
288 the following requests.
290 Implemented extended service handling for server. See ztest.c
291 for an example as well as backend.h. New handlers are registerd
294 * Changed interface for sort in server.
296 Added new members to statserv_options_block. It allows a server
297 to read options from another source than just the command line. Thanks
298 to Charles Woodfield.
300 * Changed definition of Z_Triple in file prt-grs.h - member boolean
301 renamed to zboolean. Some C++ compilers complained about the name.
303 Minor changes to gils.abs. Added index 's' (sort) on title
304 and date/time-last-modified.
308 Fixed bug in server library regarding inetd mode (-i). This bug
309 was introduced by release 1.4.
313 Added sort facility in client and backend server interface.
315 Fixed problem with dependencies in Makefile(s).
317 Fixed bugs for encoders/decoders of extended services and
320 Implemented sub-tree feature for schemas. Sub-trees are
321 referenced in *.abs-files. See explain.abs for an example
322 of the use of this feature.
324 Modified bib1.att; local attributes for ANY didn't include
325 ANY itself (only affects use of the retrieval module).
327 Fixed bug in plain SGML reader in function data1_read_node:
328 tags with prefix "var" was incorrectly interpreted as variants.
330 Added feature "sub-schemas" to enable references to - and definitions
331 of - group of elements.
333 * Removed member parent from type data1_element (in data1.h).
335 Implemented function odr_nullval() that returns the value of
338 * Removed member num_children from data1_node (in data1.h).
340 Made NT service interface part of the server library. The
341 function statserv_main uses the NT service when required and
342 calls the statserv_start / statserv_close routines.
344 Routine zget_SearchRequest and zget_PresentRequest fills
345 resultSetName/Id member with "default" instead of "Default".
347 Fixed memory leak in server. Request queue member wasn't freed.
349 Fixed nmem_exit so that memory is freed.
353 Revised the CCL parser utility to be thread safe.
355 Added function, oid_ent_to_oid, to replace the function
356 oid_getoidbyent, which is not thread safe.
358 * Added nmem_init and nmem_exit to initialize and release
359 NMEM resources. Function nmem_init should be called once in the
360 initial thread before NMEM/ODR is used. statserv.c and client.c
361 have been changed accordingly. The change was necessary to make
362 NMEM thread safe. The NMEM memory pool is shared amongst threads
363 in a process. Unix-based applications will still work fine without
366 Added NT Services interface for the the Z39.50 (statserv) Server.
367 Refer to the ztest.c source on the usage.
369 Windows 95/NT port using MSVC5.0. Project files are included in the
372 * Defined new 'global' handle for the retrieval (data1) system. The
373 new handled, data1_handle, describes the state of the data1 system.
374 This handle is passed as first argument to virtually all
375 data1 related routines. The functions data1_create and data1_destroy
376 creates and destroys a data1 handle respectively.
378 Added ODR encode stream member to all backend request structures
379 init, search, scan etc. This stream should be used to allocate all
380 memory used for the response when thread safe operation is needed.
382 Changed the comstack utility, cs_addstr, to be thread safe. The
383 returned hostname string returned by the function is now part the
386 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
387 function. The cs_straddr takes a COMSTACK handle as argument, so this
388 function must be used after cs_create and before bind/connect.
389 This function is thread safe.
391 Moved test server to 'ztest' directory - generic server code still
392 in 'server' directory.
394 Made prefix query (pquery.c) utility thread safe.
396 Added new function modifier YAZ_EXPORT to 'export' public DLL
397 functions when using windows (see include/yconfig.h).
399 Added definitions to the OID database (util/oid.c) (RVDM).
401 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
403 Added call to ccl_rpn_delete in client program.
405 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
406 release of RPN structure.
408 Added support for C++, headers uses extern "C" for public definitions.
409 With input from RVDM.
411 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
412 Thanks to Ronald van der Meer (RVDM).
414 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
416 Added support for private extensions to the OID database
417 (oid_setprivateoids()). Thanks to RVDM.
419 Added optional, physical ANY (key replication)
421 Fixed null-reference problem in GRS-1 output filter.
423 Proximity operator added to Prefix Query Format (PQF).
425 In test client command "base" accepts multiple databases.
427 Fixed bug in cs_close stack that caused trouble with WINSOCK.
431 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
433 Smallish bug-fixes in the new encoders/decoders (explain).
435 Bug fixed in DeleteRequest.
437 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
439 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
441 Added SOIF syntax (using private OID for now) to retrieval module and client.
443 Added Update extended service.
445 Added SearchResult-1 additional info structure.
447 Added optional CCL (ISO8777) interpreter as separate module. Available
450 --- 1.2 1996/6/10 (1st anniversary release)
452 Added Summary record syntax. Lightly tested.
454 Added OPAC record syntax. Untested.
456 Added ResourceReport service encoders/decoders. Untested.
458 Fixed bug in z_Unit - wrong tagging on unitSystem.
460 Fixed bug in the DiagRecs decoder.
462 Added options for max PDU size and session timeout to frontend-server.
464 Added documentation of query-language parsers and other supporting utilities.
466 [frontend-server] Added Attribute set to the bend_scanrequest API.
468 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
469 surrogate diagnostics were generated.
471 [retrieval] Allow multiple local values for attribute.
473 [retrieval] Allow multiple attributes per element in .abs files. index type.
475 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
479 Minor changes, mostly specific to Zebra's requirements (retrieval)
483 Repaired bug in frontend server when running multiple listening
484 endpoints in dynamic mode.
486 z_External() now won't break if a known, ASN.1 value comes encapsulated
487 in an octet-string. The value will pass through unmodified in an Odr_oct.
489 Added a bit of code to the demo client to decode & display
490 ASN.1-structured records represented in the octet-aligned branch of
491 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
493 Added z_ext_getentbyref() to the ASN module. Doc updated.
495 * Completed the SCAN definition in the ASN module. This may break SCAN
496 code based on older YAZ-versions at compile-time. The fix is easy -
499 * Added 'displayTerm' and OtherInformation to the TermInfo structure
500 under the SCAN definition. Remember to initialize this, server-people.
502 Comstack should now support the WAIS protocol in TCP/IP mode. Note
503 that this does not extend to ODR and ASN.
505 Comstack allows insertion of established socket (primarily for
506 inetd-operation of servers). Doc updated.
508 Front-end server can now start from the inetd in TCP mode. Doc
515 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
516 the rank and record number.
518 Adjustments to the frontend server.
520 Fixed diagnostic BER dumper. It ignored the file argument.
524 Various changes to retrieval module.
526 Changed the union discriminators of the protocol files from enums to
527 ints paired with #defines.
529 *Changed oident.class to oident.oclass to avoid a reserved word in C++
532 *Changed operator in the RPN structure to 'roperator', again to avoid a
535 Fixed problems in Explain decoders/encoders.
539 Memory bug in log module fixed.
543 Occasional malloc() of 0 bytes fixed in d1_espec.c.
545 Bug in Explain DatabaseInfo module fixed.
547 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
551 The shift to v1.0 signals that we now consider the *core* functionality
552 of YAZ reasonably stable (the core being more or less equivalent to
553 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
554 tested (Explain not at all - though that will happen soonish).
556 Minor changes to code to support Windows port.
558 Various minor changes after we're getting to use GRS-1 & co. more.
560 Added Espec-1 format.
562 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
563 of the protocol and it cannot be selected when encoding (maps into 'string'
564 when decoding). Needed to talk to some servers.
566 Demo client can request simple element set names.
568 Added Diagnostic Format encoders/decoders.
570 Added simple Close handling to frontend server (no hooks for resource
571 reporting yet), and demonstration client.
573 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
577 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
578 handled incorrectly when records were requested in the searchResponse. This
579 will only affect you if you use the frontend-server.
581 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
582 Test-client will ask for and print GRS1. Ztest will return dummy records
585 Added Explain encoders/decoders to the service-level API. Untested.
587 Added Extended Services: Item Order encoders and decoders to the Service-
588 level API. Untested. We could use a recent copy of the pertinent bits
589 of the ILL protocol to add those bits.
591 Added diagnostic format 1 encoders/decoders to the service-level API.
594 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
595 odr_cons.c, which causes a more correct output.
597 Fixed handling of searchRequest in frontend server. NextResultSetPosition
598 was always set to 0 when no records were requested in the searchRequest.
600 * Added better external-handling. This shouldn't harm old code that
601 *encodes* externals. It can break code that looks for a
602 'single-ASN1-type' representation, since those types that are known
603 are now decoded immediately. Look at the SUTRS sample code in
604 seshigh.c and client.c. Documentation updated.
606 Handling of structured records in bend_fetchresponse. Length -1 marks
607 structured record, type is deduced from format field.
610 Fairly quick maintenance release to add SUTRS support.
612 Fixed handling of SUTRS records in the demonstration client.
614 * Added format field to the bend_fetchrequest and bend_fetchresponce
615 structures of the backend API (frontend server). When the record is
616 returned, the value of the format field is mapped to an OID. The
617 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
618 of the record. The special value VAL_NONE in the bend_request means
619 that no specific format was requested by the client. Documentation
620 updated accordingly. Test server (ztest) will return a fixed dummy
621 SUTRS record if your client requests SUTRS.
623 Documentation updated accordingly.
625 You can now set external libraries and RANLIB support in the top-level
629 First public release.