1 Possible compatibility problems with earlier versions marked with '*'.
3 Added raw OID member for preferred record syntax (request_format_raw)
4 and returned record syntax (output_format_raw) for backend fetch method.
6 Config file yaz-config now accepts options so that it returns specific
7 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
9 Shared library support for UNIX using GNU libtool.
11 * Modified backend interface. Request/Response struct's replaced by
12 one read/write C struct. For example bend_fetchrequest and
13 bend_fetchresult have been replaced by single bend_fetch_rr struct.
14 Every handler - even search has to be registered in bend_init
15 handler. This means that the YAZ library no longer refers to
16 external functions and it makes it possible to make the whole
17 thing a single DLL/SO.
19 Added Segment handler for backend server.
21 Added Zmbol/Zebra administrative functions to YAZ client.
23 Threaded frontend server on UNIX (when POSIX Threads are available).
24 Starting the server with option -T enables multi-threading.
28 Added configure option --enable-comp/disable-comp to control use
29 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
30 located in sub directory asn.
32 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
33 in ${exec_prefix}/bin along with the other programs yaz-client and
36 GNU automake used to maintain makefiles.
40 Changed retrieval module so that we can load records with no abstract
41 syntax defined. Tagpaths in these records are fully composed of string
44 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
48 On UNIX, the generated makefile now supports a proper 'make install'.
49 The prefix can be set via GNU configure to set the install location
50 (default is /usr/local).
52 * YAZ programs client and ztest were renamed to yaz-client and
53 yaz-ztest to avoid conflicts when users install YAZ in "standard"
54 locations, such as /usr/bin,/usr/local/bin,etc.
56 * YAZ Header files were moved from include to include/yaz. YAZ Header
57 files are referred to as include <yaz/log.h> rather than <log.h>.
58 The YAZ include path (-I ..) is therefore the same as before. Programmers
59 should update their #include statements or use -Ipath/include/yaz
60 instead. The main motivation for doing this change is that YAZ header files
61 can be installed in "standard" locations /usr/include,/usr/local/include
62 without introducing conflicts, since ALL YAZ header files are stored
63 in subdirectory yaz (under /usr/include for example).
65 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
66 rather than project/workspace files. We switched because project files
67 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
70 Changed name of logging function, logf, to yaz_log, to prevent name
71 clash with some math-log functions. The YAZ header log.h defines logf
72 to yaz_log (#define) so there should be no incompatibilities by this
75 Added bend_start/bend_stop handlers for server. These handler are
76 called on start/stop of server. For windows they are called whenever
77 a service is started/stopped.
79 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
80 a fairly small ASN.1 compiler written in Tcl. The compiler is located
81 in util/yc.tcl. The auto-generated C code structures are, in a few
82 cases, incompatible with the old decoders. There are differences in the
83 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
84 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
85 The preprocessor variable ASN_COMPILED is defined when the compiled
86 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
87 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
88 wish to use the old encoders/decoders you can specify --disable-yc
91 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
92 version so that it supports both new - and old version of DB Update
94 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
95 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
96 change. The name parameter can be set to 0 in which no name is specified
97 for the construction. The macros odr_implicit and odr_explicit sets name
98 parameter to zero for the construction involved. New macros
99 odr_implicit_tag and odr_explicit_tag are similar to the others,
100 except that a name parameter is added. For programmers' that don't use
101 ODR they probably only need to change the call to z_APDU and z_External.
103 Added access control facility by interfacing the TCP wrapper library.
104 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
105 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
106 name of the daemon and enables the access control as specified in
107 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
109 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
110 den Dool <H.M.vdnDool@kub.nl>.
112 Added reference ID parameter to most functions in server API - refer
113 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
115 Changed name of ccl library to libccl.a (was ccl.a).
117 Fixed bug in decoder for Explain (Category TargetInfo).
119 Added support for GNU readline in client. Thanks to Jacob Poulsen
120 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
122 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
123 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
124 IMPLEMENTATION! This change was made to the development version before
125 the ZIG decided to retract the amendment. If any users MUST be
126 compatible with the original Update definition, PLEASE CONTACT US, and
127 we will include a separate definition corresponding to the old Update
128 ES. Note that because of the change to the ASN.1 of the
129 TaskPackageRecordStructure we cannot define a single structure that
130 will support both versions.
132 * Added const modifier to buffer parameter for some ODR/BER encoding
133 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
134 completeWAIS, odr_dumpBER.
136 Fixed bug in client.c which caused a crash when a scanResponse didn't
137 contain positionOfTerm.
139 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
140 * will cause an error in a client if a non-YAZ target sends both a
141 * list of Scan entries and non-surrogate diagnostics.
143 Retrieval module enhancements. Tag sets may be typed in the reference
144 to it. From the .abs-file the "tagset" directive takes a third optional
145 integer type for the tag set referenced. From a .tag-file the "include"
146 directive takes a third optional type as well. The old "type" directive
147 in the tag set itself is still recognized but acts as the default type
150 Backend interface change. Individual Scan terms returned from bend_scan
151 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
152 in include/backend.h.
154 Retrieval module enhancements. Multiple tag sets and attribute sets may
155 be specified in abstract syntax specs. Revised the error/warning for
156 logging messages reported by the retrieval module when reading the
159 Object Identifier system (oid_..) changed. The API is backwards
160 compatible but the oid-routines now allocates new OID's when needed.
161 Raw OID's may be specified in oid_getvalbyname.
163 YAZ now uses GNU configure to generate Makefile(s).
165 * Minor changes in some of the member names of DeleteResultSetRequest and
166 DeleteResultSetResponse. See include/proto.h.
168 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
169 and added member 'languages' in TargetInfo (which was missing).
171 Changed the way attribute sets are handled in the retrieval
172 module. These are now cached, just like the abstract syntaxes
175 Changed YAZ so that it links with compiled ASN.1.
177 Added Explain-schema definitions and mapping routines. The following
178 Explain categories have been implemented: AttributeDetails,
179 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
181 Fixed minor bug in Windows version of Server Library.
183 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
185 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
187 Added EXTERNAL: UNIverse Resource Report (non-standard).
189 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
190 ENUMERATED and SET OF.
192 * Added 'const' to some of the char pointer arguments for the
193 functions, data1_read_node, data1_getelementbytagname,
194 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
197 Fixed bug in data1_insert_taggeddata - the last_child member of
198 parent wasn't initialised.
200 * Changed data1_read_record and data1_read_node so that the supplied
201 "SGML"-buffer is read-only. In particular the resulting data1 - tree
202 doesn't refer to any parts of the "SGML"-buffer.
204 Fixed bug in server library (Windows version of statserv_remove).
206 * Changed code so that it compiles as C++. The type definition
207 of Odr_fun which is a member of Odr_arm was changed. The result is,
208 that an explicit typecast is needed for the fun pointer when
209 using Odr_arm - as in:
210 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
212 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
214 Implemented the new structured date and time definition as approved
215 by the ZIG. Added schemaId element to the specificTag in Espec-1
216 (also approved at the last ZIG). Thanks to RVDM.
218 Added some Object identifiers (RVDM).
220 Changed the Update Extended Service (RVDM).
222 Added command "refid" to client which specifies referenceId for
223 the following requests.
225 Implemented extended service handling for server. See ztest.c
226 for an example as well as backend.h. New handlers are registerd
229 * Changed interface for sort in server.
231 Added new members to statserv_options_block. It allows a server
232 to read options from another source than just the command line. Thanks
233 to Charles Woodfield.
235 * Changed definition of Z_Triple in file prt-grs.h - member boolean
236 renamed to zboolean. Some C++ compilers complained about the name.
238 Minor changes to gils.abs. Added index 's' (sort) on title
239 and date/time-last-modified.
243 Fixed bug in server library regarding inetd mode (-i). This bug
244 was introduced by release 1.4.
248 Added sort facility in client and backend server interface.
250 Fixed problem with dependencies in Makefile(s).
252 Fixed bugs for encoders/decoders of extended services and
255 Implemented sub-tree feature for schemas. Sub-trees are
256 referenced in *.abs-files. See explain.abs for an example
257 of the use of this feature.
259 Modified bib1.att; local attributes for ANY didn't include
260 ANY itself (only affects use of the retrieval module).
262 Fixed bug in plain SGML reader in function data1_read_node:
263 tags with prefix "var" was incorrectly interpreted as variants.
265 Added feature "sub-schemas" to enable references to - and definitions
266 of - group of elements.
268 * Removed member parent from type data1_element (in data1.h).
270 Implemented function odr_nullval() that returns the value of
273 * Removed member num_children from data1_node (in data1.h).
275 Made NT service interface part of the server library. The
276 function statserv_main uses the NT service when required and
277 calls the statserv_start / statserv_close routines.
279 Routine zget_SearchRequest and zget_PresentRequest fills
280 resultSetName/Id member with "default" instead of "Default".
282 Fixed memory leak in server. Request queue member wasn't freed.
284 Fixed nmem_exit so that memory is freed.
288 Revised the CCL parser utility to be thread safe.
290 Added function, oid_ent_to_oid, to replace the function
291 oid_getoidbyent, which is not thread safe.
293 * Added nmem_init and nmem_exit to initialize and release
294 NMEM resources. Function nmem_init should be called once in the
295 initial thread before NMEM/ODR is used. statserv.c and client.c
296 have been changed accordingly. The change was necessary to make
297 NMEM thread safe. The NMEM memory pool is shared amongst threads
298 in a process. Unix-based applications will still work fine without
301 Added NT Services interface for the the Z39.50 (statserv) Server.
302 Refer to the ztest.c source on the usage.
304 Windows 95/NT port using MSVC5.0. Project files are included in the
307 * Defined new 'global' handle for the retrieval (data1) system. The
308 new handled, data1_handle, describes the state of the data1 system.
309 This handle is passed as first argument to virtually all
310 data1 related routines. The functions data1_create and data1_destroy
311 creates and destroys a data1 handle respectively.
313 Added ODR encode stream member to all backend request structures
314 init, search, scan etc. This stream should be used to allocate all
315 memory used for the response when thread safe operation is needed.
317 Changed the comstack utility, cs_addstr, to be thread safe. The
318 returned hostname string returned by the function is now part the
321 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
322 function. The cs_straddr takes a COMSTACK handle as argument, so this
323 function must be used after cs_create and before bind/connect.
324 This function is thread safe.
326 Moved test server to 'ztest' directory - generic server code still
327 in 'server' directory.
329 Made prefix query (pquery.c) utility thread safe.
331 Added new function modifier YAZ_EXPORT to 'export' public DLL
332 functions when using windows (see include/yconfig.h).
334 Added definitions to the OID database (util/oid.c) (RVDM).
336 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
338 Added call to ccl_rpn_delete in client program.
340 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
341 release of RPN structure.
343 Added support for C++, headers uses extern "C" for public definitions.
344 With input from RVDM.
346 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
347 Thanks to Ronald van der Meer (RVDM).
349 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
351 Added support for private extensions to the OID database
352 (oid_setprivateoids()). Thanks to RVDM.
354 Added optional, physical ANY (key replication)
356 Fixed null-reference problem in GRS-1 output filter.
358 Proximity operator added to Prefix Query Format (PQF).
360 In test client command "base" accepts multiple databases.
362 Fixed bug in cs_close stack that caused trouble with WINSOCK.
366 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
368 Smallish bug-fixes in the new encoders/decoders (explain).
370 Bug fixed in DeleteRequest.
372 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
374 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
376 Added SOIF syntax (using private OID for now) to retrieval module and client.
378 Added Update extended service.
380 Added SearchResult-1 additional info structure.
382 Added optional CCL (ISO8777) interpreter as separate module. Available
385 --- 1.2 1996/6/10 (1st anniversary release)
387 Added Summary record syntax. Lightly tested.
389 Added OPAC record syntax. Untested.
391 Added ResourceReport service encoders/decoders. Untested.
393 Fixed bug in z_Unit - wrong tagging on unitSystem.
395 Fixed bug in the DiagRecs decoder.
397 Added options for max PDU size and session timeout to frontend-server.
399 Added documentation of query-language parsers and other supporting utilities.
401 [frontend-server] Added Attribute set to the bend_scanrequest API.
403 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
404 surrogate diagnostics were generated.
406 [retrieval] Allow multiple local values for attribute.
408 [retrieval] Allow multiple attributes per element in .abs files. index type.
410 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
414 Minor changes, mostly specific to Zebra's requirements (retrieval)
418 Repaired bug in frontend server when running multiple listening
419 endpoints in dynamic mode.
421 z_External() now won't break if a known, ASN.1 value comes encapsulated
422 in an octet-string. The value will pass through unmodified in an Odr_oct.
424 Added a bit of code to the demo client to decode & display
425 ASN.1-structured records represented in the octet-aligned branch of
426 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
428 Added z_ext_getentbyref() to the ASN module. Doc updated.
430 * Completed the SCAN definition in the ASN module. This may break SCAN
431 code based on older YAZ-versions at compile-time. The fix is easy -
434 * Added 'displayTerm' and OtherInformation to the TermInfo structure
435 under the SCAN definition. Remember to initialize this, server-people.
437 Comstack should now support the WAIS protocol in TCP/IP mode. Note
438 that this does not extend to ODR and ASN.
440 Comstack allows insertion of established socket (primarily for
441 inetd-operation of servers). Doc updated.
443 Front-end server can now start from the inetd in TCP mode. Doc
450 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
451 the rank and record number.
453 Adjustments to the frontend server.
455 Fixed diagnostic BER dumper. It ignored the file argument.
459 Various changes to retrieval module.
461 Changed the union discriminators of the protocol files from enums to
462 ints paired with #defines.
464 *Changed oident.class to oident.oclass to avoid a reserved word in C++
467 *Changed operator in the RPN structure to 'roperator', again to avoid a
470 Fixed problems in Explain decoders/encoders.
474 Memory bug in log module fixed.
478 Occasional malloc() of 0 bytes fixed in d1_espec.c.
480 Bug in Explain DatabaseInfo module fixed.
482 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
486 The shift to v1.0 signals that we now consider the *core* functionality
487 of YAZ reasonably stable (the core being more or less equivalent to
488 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
489 tested (Explain not at all - though that will happen soonish).
491 Minor changes to code to support Windows port.
493 Various minor changes after we're getting to use GRS-1 & co. more.
495 Added Espec-1 format.
497 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
498 of the protocol and it cannot be selected when encoding (maps into 'string'
499 when decoding). Needed to talk to some servers.
501 Demo client can request simple element set names.
503 Added Diagnostic Format encoders/decoders.
505 Added simple Close handling to frontend server (no hooks for resource
506 reporting yet), and demonstration client.
508 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
512 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
513 handled incorrectly when records were requested in the searchResponse. This
514 will only affect you if you use the frontend-server.
516 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
517 Test-client will ask for and print GRS1. Ztest will return dummy records
520 Added Explain encoders/decoders to the service-level API. Untested.
522 Added Extended Services: Item Order encoders and decoders to the Service-
523 level API. Untested. We could use a recent copy of the pertinent bits
524 of the ILL protocol to add those bits.
526 Added diagnostic format 1 encoders/decoders to the service-level API.
529 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
530 odr_cons.c, which causes a more correct output.
532 Fixed handling of searchRequest in frontend server. NextResultSetPosition
533 was always set to 0 when no records were requested in the searchRequest.
535 * Added better external-handling. This shouldn't harm old code that
536 *encodes* externals. It can break code that looks for a
537 'single-ASN1-type' representation, since those types that are known
538 are now decoded immediately. Look at the SUTRS sample code in
539 seshigh.c and client.c. Documentation updated.
541 Handling of structured records in bend_fetchresponse. Length -1 marks
542 structured record, type is deduced from format field.
545 Fairly quick maintenance release to add SUTRS support.
547 Fixed handling of SUTRS records in the demonstration client.
549 * Added format field to the bend_fetchrequest and bend_fetchresponce
550 structures of the backend API (frontend server). When the record is
551 returned, the value of the format field is mapped to an OID. The
552 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
553 of the record. The special value VAL_NONE in the bend_request means
554 that no specific format was requested by the client. Documentation
555 updated accordingly. Test server (ztest) will return a fixed dummy
556 SUTRS record if your client requests SUTRS.
558 Documentation updated accordingly.
560 You can now set external libraries and RANLIB support in the top-level
564 First public release.