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61 bend_fetchresult have been replaced by single bend_fetch_rr struct.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