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52 bend_fetchresult have been replaced by single bend_fetch_rr struct.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