1 Possible compatibility problems with earlier versions marked with '*'.
3 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
4 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
6 When error is returned from present handler, non-surrogate diagnostic
7 is returned in present response (and fetch handler is no longer called).
9 * Minor adjustments to pquery parser (PQF). Token characters may be
10 escaped by using backslash (C-style).
12 PQF parser allows string attribute values to be specified. For @attr,
13 non-numeric characters after the equal-sign are treated as strings
16 CCL trunction character may be defined (@truncation in file)
18 * function zget_ExtendedServicesRequest sets waitAction to
19 waitIfPossible (was wait).
21 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
24 CCL operator names may be set in field definition files (CCL_bibset).
25 See ccl/bib1 for an example.
27 Fixes in ASN.1 compiler for C++ compatibility.
29 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
30 and "op_or" to avoid conflict with C++.
32 Fixed problem with GNU readline detection on Redhat 7.0.
34 Added step-size for Scan backend handler.
36 Fixed bug that made the frontend server crash when no attribute
37 set was specified for scan.
39 Front-end server automatically switches to original working directory
40 when installed as an NT service. Previously -w had to be specified to
43 Added extended attributes for retrieval module (data1), so that data1
44 records carry d1_readXML/SGML attributes. d1_read also supports
45 null-data rules ( <tag/>)
47 On UNIX when POSIX threads are available, a separate library libyazthread
48 is created. Programmers should link with that library and the yaz library
49 when using threads. The reason for the split was that some applications
50 on Linux, such as Apache, doesn't work well when using shared objects that
53 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
54 (or any frontend server) in SSL mode by specifying ssl: followed by
55 address. Only tested on UNIX.
57 Added feature for CCL module. Virtual structure s=al or s=ol generates
58 and-list and or-list respectively instead of phrase search.
62 * Added prefix "yaz_" for the functions log_init.., log_file.. and
63 log_mask_str. This was done to avoid name conflicts with other libraries
64 (such as other PHP extensions).
66 Added raw OID member for preferred record syntax (request_format_raw)
67 and returned record syntax (output_format_raw) for backend fetch method.
69 Config file yaz-config now accepts options so that it returns specific
70 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
72 Shared library support for UNIX using GNU libtool.
74 * Modified backend interface. Request/Response struct's replaced by
75 one read/write C struct. For example bend_fetchrequest and
76 bend_fetchresult have been replaced by single bend_fetch_rr struct.
77 Every handler - even search has to be registered in bend_init
78 handler. This means that the YAZ library no longer refers to
79 external functions and it makes it possible to make the whole
80 thing a single DLL/SO.
82 Added Segment handler for backend server.
84 Added Zmbol/Zebra administrative functions to YAZ client.
86 Threaded frontend server on UNIX (when POSIX Threads are available).
87 Starting the server with option -T enables multi-threading.
91 Added configure option --enable-comp/disable-comp to control use
92 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
93 located in sub directory asn.
95 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
96 in ${exec_prefix}/bin along with the other programs yaz-client and
99 GNU automake used to maintain makefiles.
103 Changed retrieval module so that we can load records with no abstract
104 syntax defined. Tagpaths in these records are fully composed of string
107 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
111 On UNIX, the generated makefile now supports a proper 'make install'.
112 The prefix can be set via GNU configure to set the install location
113 (default is /usr/local).
115 * YAZ programs client and ztest were renamed to yaz-client and
116 yaz-ztest to avoid conflicts when users install YAZ in "standard"
117 locations, such as /usr/bin,/usr/local/bin,etc.
119 * YAZ Header files were moved from include to include/yaz. YAZ Header
120 files are referred to as include <yaz/log.h> rather than <log.h>.
121 The YAZ include path (-I ..) is therefore the same as before. Programmers
122 should update their #include statements or use -Ipath/include/yaz
123 instead. The main motivation for doing this change is that YAZ header files
124 can be installed in "standard" locations /usr/include,/usr/local/include
125 without introducing conflicts, since ALL YAZ header files are stored
126 in subdirectory yaz (under /usr/include for example).
128 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
129 rather than project/workspace files. We switched because project files
130 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
133 Changed name of logging function, logf, to yaz_log, to prevent name
134 clash with some math-log functions. The YAZ header log.h defines logf
135 to yaz_log (#define) so there should be no incompatibilities by this
138 Added bend_start/bend_stop handlers for server. These handler are
139 called on start/stop of server. For windows they are called whenever
140 a service is started/stopped.
142 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
143 a fairly small ASN.1 compiler written in Tcl. The compiler is located
144 in util/yc.tcl. The auto-generated C code structures are, in a few
145 cases, incompatible with the old decoders. There are differences in the
146 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
147 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
148 The preprocessor variable ASN_COMPILED is defined when the compiled
149 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
150 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
151 wish to use the old encoders/decoders you can specify --disable-yc
154 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
155 version so that it supports both new - and old version of DB Update
157 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
158 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
159 change. The name parameter can be set to 0 in which no name is specified
160 for the construction. The macros odr_implicit and odr_explicit sets name
161 parameter to zero for the construction involved. New macros
162 odr_implicit_tag and odr_explicit_tag are similar to the others,
163 except that a name parameter is added. For programmers' that don't use
164 ODR they probably only need to change the call to z_APDU and z_External.
166 Added access control facility by interfacing the TCP wrapper library.
167 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
168 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
169 name of the daemon and enables the access control as specified in
170 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
172 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
173 den Dool <H.M.vdnDool@kub.nl>.
175 Added reference ID parameter to most functions in server API - refer
176 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
178 Changed name of ccl library to libccl.a (was ccl.a).
180 Fixed bug in decoder for Explain (Category TargetInfo).
182 Added support for GNU readline in client. Thanks to Jacob Poulsen
183 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
185 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
186 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
187 IMPLEMENTATION! This change was made to the development version before
188 the ZIG decided to retract the amendment. If any users MUST be
189 compatible with the original Update definition, PLEASE CONTACT US, and
190 we will include a separate definition corresponding to the old Update
191 ES. Note that because of the change to the ASN.1 of the
192 TaskPackageRecordStructure we cannot define a single structure that
193 will support both versions.
195 * Added const modifier to buffer parameter for some ODR/BER encoding
196 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
197 completeWAIS, odr_dumpBER.
199 Fixed bug in client.c which caused a crash when a scanResponse didn't
200 contain positionOfTerm.
202 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
203 * will cause an error in a client if a non-YAZ target sends both a
204 * list of Scan entries and non-surrogate diagnostics.
206 Retrieval module enhancements. Tag sets may be typed in the reference
207 to it. From the .abs-file the "tagset" directive takes a third optional
208 integer type for the tag set referenced. From a .tag-file the "include"
209 directive takes a third optional type as well. The old "type" directive
210 in the tag set itself is still recognized but acts as the default type
213 Backend interface change. Individual Scan terms returned from bend_scan
214 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
215 in include/backend.h.
217 Retrieval module enhancements. Multiple tag sets and attribute sets may
218 be specified in abstract syntax specs. Revised the error/warning for
219 logging messages reported by the retrieval module when reading the
222 Object Identifier system (oid_..) changed. The API is backwards
223 compatible but the oid-routines now allocates new OID's when needed.
224 Raw OID's may be specified in oid_getvalbyname.
226 YAZ now uses GNU configure to generate Makefile(s).
228 * Minor changes in some of the member names of DeleteResultSetRequest and
229 DeleteResultSetResponse. See include/proto.h.
231 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
232 and added member 'languages' in TargetInfo (which was missing).
234 Changed the way attribute sets are handled in the retrieval
235 module. These are now cached, just like the abstract syntaxes
238 Changed YAZ so that it links with compiled ASN.1.
240 Added Explain-schema definitions and mapping routines. The following
241 Explain categories have been implemented: AttributeDetails,
242 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
244 Fixed minor bug in Windows version of Server Library.
246 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
248 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
250 Added EXTERNAL: UNIverse Resource Report (non-standard).
252 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
253 ENUMERATED and SET OF.
255 * Added 'const' to some of the char pointer arguments for the
256 functions, data1_read_node, data1_getelementbytagname,
257 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
260 Fixed bug in data1_insert_taggeddata - the last_child member of
261 parent wasn't initialised.
263 * Changed data1_read_record and data1_read_node so that the supplied
264 "SGML"-buffer is read-only. In particular the resulting data1 - tree
265 doesn't refer to any parts of the "SGML"-buffer.
267 Fixed bug in server library (Windows version of statserv_remove).
269 * Changed code so that it compiles as C++. The type definition
270 of Odr_fun which is a member of Odr_arm was changed. The result is,
271 that an explicit typecast is needed for the fun pointer when
272 using Odr_arm - as in:
273 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
275 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
277 Implemented the new structured date and time definition as approved
278 by the ZIG. Added schemaId element to the specificTag in Espec-1
279 (also approved at the last ZIG). Thanks to RVDM.
281 Added some Object identifiers (RVDM).
283 Changed the Update Extended Service (RVDM).
285 Added command "refid" to client which specifies referenceId for
286 the following requests.
288 Implemented extended service handling for server. See ztest.c
289 for an example as well as backend.h. New handlers are registerd
292 * Changed interface for sort in server.
294 Added new members to statserv_options_block. It allows a server
295 to read options from another source than just the command line. Thanks
296 to Charles Woodfield.
298 * Changed definition of Z_Triple in file prt-grs.h - member boolean
299 renamed to zboolean. Some C++ compilers complained about the name.
301 Minor changes to gils.abs. Added index 's' (sort) on title
302 and date/time-last-modified.
306 Fixed bug in server library regarding inetd mode (-i). This bug
307 was introduced by release 1.4.
311 Added sort facility in client and backend server interface.
313 Fixed problem with dependencies in Makefile(s).
315 Fixed bugs for encoders/decoders of extended services and
318 Implemented sub-tree feature for schemas. Sub-trees are
319 referenced in *.abs-files. See explain.abs for an example
320 of the use of this feature.
322 Modified bib1.att; local attributes for ANY didn't include
323 ANY itself (only affects use of the retrieval module).
325 Fixed bug in plain SGML reader in function data1_read_node:
326 tags with prefix "var" was incorrectly interpreted as variants.
328 Added feature "sub-schemas" to enable references to - and definitions
329 of - group of elements.
331 * Removed member parent from type data1_element (in data1.h).
333 Implemented function odr_nullval() that returns the value of
336 * Removed member num_children from data1_node (in data1.h).
338 Made NT service interface part of the server library. The
339 function statserv_main uses the NT service when required and
340 calls the statserv_start / statserv_close routines.
342 Routine zget_SearchRequest and zget_PresentRequest fills
343 resultSetName/Id member with "default" instead of "Default".
345 Fixed memory leak in server. Request queue member wasn't freed.
347 Fixed nmem_exit so that memory is freed.
351 Revised the CCL parser utility to be thread safe.
353 Added function, oid_ent_to_oid, to replace the function
354 oid_getoidbyent, which is not thread safe.
356 * Added nmem_init and nmem_exit to initialize and release
357 NMEM resources. Function nmem_init should be called once in the
358 initial thread before NMEM/ODR is used. statserv.c and client.c
359 have been changed accordingly. The change was necessary to make
360 NMEM thread safe. The NMEM memory pool is shared amongst threads
361 in a process. Unix-based applications will still work fine without
364 Added NT Services interface for the the Z39.50 (statserv) Server.
365 Refer to the ztest.c source on the usage.
367 Windows 95/NT port using MSVC5.0. Project files are included in the
370 * Defined new 'global' handle for the retrieval (data1) system. The
371 new handled, data1_handle, describes the state of the data1 system.
372 This handle is passed as first argument to virtually all
373 data1 related routines. The functions data1_create and data1_destroy
374 creates and destroys a data1 handle respectively.
376 Added ODR encode stream member to all backend request structures
377 init, search, scan etc. This stream should be used to allocate all
378 memory used for the response when thread safe operation is needed.
380 Changed the comstack utility, cs_addstr, to be thread safe. The
381 returned hostname string returned by the function is now part the
384 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
385 function. The cs_straddr takes a COMSTACK handle as argument, so this
386 function must be used after cs_create and before bind/connect.
387 This function is thread safe.
389 Moved test server to 'ztest' directory - generic server code still
390 in 'server' directory.
392 Made prefix query (pquery.c) utility thread safe.
394 Added new function modifier YAZ_EXPORT to 'export' public DLL
395 functions when using windows (see include/yconfig.h).
397 Added definitions to the OID database (util/oid.c) (RVDM).
399 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
401 Added call to ccl_rpn_delete in client program.
403 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
404 release of RPN structure.
406 Added support for C++, headers uses extern "C" for public definitions.
407 With input from RVDM.
409 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
410 Thanks to Ronald van der Meer (RVDM).
412 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
414 Added support for private extensions to the OID database
415 (oid_setprivateoids()). Thanks to RVDM.
417 Added optional, physical ANY (key replication)
419 Fixed null-reference problem in GRS-1 output filter.
421 Proximity operator added to Prefix Query Format (PQF).
423 In test client command "base" accepts multiple databases.
425 Fixed bug in cs_close stack that caused trouble with WINSOCK.
429 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
431 Smallish bug-fixes in the new encoders/decoders (explain).
433 Bug fixed in DeleteRequest.
435 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
437 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
439 Added SOIF syntax (using private OID for now) to retrieval module and client.
441 Added Update extended service.
443 Added SearchResult-1 additional info structure.
445 Added optional CCL (ISO8777) interpreter as separate module. Available
448 --- 1.2 1996/6/10 (1st anniversary release)
450 Added Summary record syntax. Lightly tested.
452 Added OPAC record syntax. Untested.
454 Added ResourceReport service encoders/decoders. Untested.
456 Fixed bug in z_Unit - wrong tagging on unitSystem.
458 Fixed bug in the DiagRecs decoder.
460 Added options for max PDU size and session timeout to frontend-server.
462 Added documentation of query-language parsers and other supporting utilities.
464 [frontend-server] Added Attribute set to the bend_scanrequest API.
466 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
467 surrogate diagnostics were generated.
469 [retrieval] Allow multiple local values for attribute.
471 [retrieval] Allow multiple attributes per element in .abs files. index type.
473 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
477 Minor changes, mostly specific to Zebra's requirements (retrieval)
481 Repaired bug in frontend server when running multiple listening
482 endpoints in dynamic mode.
484 z_External() now won't break if a known, ASN.1 value comes encapsulated
485 in an octet-string. The value will pass through unmodified in an Odr_oct.
487 Added a bit of code to the demo client to decode & display
488 ASN.1-structured records represented in the octet-aligned branch of
489 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
491 Added z_ext_getentbyref() to the ASN module. Doc updated.
493 * Completed the SCAN definition in the ASN module. This may break SCAN
494 code based on older YAZ-versions at compile-time. The fix is easy -
497 * Added 'displayTerm' and OtherInformation to the TermInfo structure
498 under the SCAN definition. Remember to initialize this, server-people.
500 Comstack should now support the WAIS protocol in TCP/IP mode. Note
501 that this does not extend to ODR and ASN.
503 Comstack allows insertion of established socket (primarily for
504 inetd-operation of servers). Doc updated.
506 Front-end server can now start from the inetd in TCP mode. Doc
513 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
514 the rank and record number.
516 Adjustments to the frontend server.
518 Fixed diagnostic BER dumper. It ignored the file argument.
522 Various changes to retrieval module.
524 Changed the union discriminators of the protocol files from enums to
525 ints paired with #defines.
527 *Changed oident.class to oident.oclass to avoid a reserved word in C++
530 *Changed operator in the RPN structure to 'roperator', again to avoid a
533 Fixed problems in Explain decoders/encoders.
537 Memory bug in log module fixed.
541 Occasional malloc() of 0 bytes fixed in d1_espec.c.
543 Bug in Explain DatabaseInfo module fixed.
545 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
549 The shift to v1.0 signals that we now consider the *core* functionality
550 of YAZ reasonably stable (the core being more or less equivalent to
551 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
552 tested (Explain not at all - though that will happen soonish).
554 Minor changes to code to support Windows port.
556 Various minor changes after we're getting to use GRS-1 & co. more.
558 Added Espec-1 format.
560 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
561 of the protocol and it cannot be selected when encoding (maps into 'string'
562 when decoding). Needed to talk to some servers.
564 Demo client can request simple element set names.
566 Added Diagnostic Format encoders/decoders.
568 Added simple Close handling to frontend server (no hooks for resource
569 reporting yet), and demonstration client.
571 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
575 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
576 handled incorrectly when records were requested in the searchResponse. This
577 will only affect you if you use the frontend-server.
579 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
580 Test-client will ask for and print GRS1. Ztest will return dummy records
583 Added Explain encoders/decoders to the service-level API. Untested.
585 Added Extended Services: Item Order encoders and decoders to the Service-
586 level API. Untested. We could use a recent copy of the pertinent bits
587 of the ILL protocol to add those bits.
589 Added diagnostic format 1 encoders/decoders to the service-level API.
592 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
593 odr_cons.c, which causes a more correct output.
595 Fixed handling of searchRequest in frontend server. NextResultSetPosition
596 was always set to 0 when no records were requested in the searchRequest.
598 * Added better external-handling. This shouldn't harm old code that
599 *encodes* externals. It can break code that looks for a
600 'single-ASN1-type' representation, since those types that are known
601 are now decoded immediately. Look at the SUTRS sample code in
602 seshigh.c and client.c. Documentation updated.
604 Handling of structured records in bend_fetchresponse. Length -1 marks
605 structured record, type is deduced from format field.
608 Fairly quick maintenance release to add SUTRS support.
610 Fixed handling of SUTRS records in the demonstration client.
612 * Added format field to the bend_fetchrequest and bend_fetchresponce
613 structures of the backend API (frontend server). When the record is
614 returned, the value of the format field is mapped to an OID. The
615 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
616 of the record. The special value VAL_NONE in the bend_request means
617 that no specific format was requested by the client. Documentation
618 updated accordingly. Test server (ztest) will return a fixed dummy
619 SUTRS record if your client requests SUTRS.
621 Documentation updated accordingly.
623 You can now set external libraries and RANLIB support in the top-level
627 First public release.