1 Possible compatibility problems with earlier versions marked with '*'.
3 Added access control facility by interfacing the TCP wrapper library.
4 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
5 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
6 name of the daemon and enables the access control as specified in
7 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
9 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
10 den Dool <H.M.vdnDool@kub.nl>.
12 Added reference ID parameter to most functions in server API - refer
13 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
15 Changed name of ccl library to libccl.a (was ccl.a).
17 Fixed bug in decoder for Explain (Category TargetInfo).
19 Added support for GNU readline in client. Thanks to Jacob Poulsen
20 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
22 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
23 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
24 IMPLEMENTATION! This change was made to the development version before
25 the ZIG decided to retract the amendment. If any users MUST be
26 compatible with the original Update definition, PLEASE CONTACT US, and
27 we will include a separate definition corresponding to the old Update
28 ES. Note that because of the change to the ASN.1 of the
29 TaskPackageRecordStructure we cannot define a single structure that
30 will support both versions.
32 * Added const modifier to buffer parameter for some ODR/BER encoding
33 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
34 completeWAIS, odr_dumpBER.
36 Fixed bug in client.c which caused a crash when a scanResponse didn't
37 contain positionOfTerm.
39 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
40 * will cause an error in a client if a non-YAZ target sends both a
41 * list of Scan entries and non-surrogate diagnostics.
43 Retrieval module enhancements. Tag sets may be typed in the reference
44 to it. From the .abs-file the "tagset" directive takes a third optional
45 integer type for the tag set referenced. From a .tag-file the "include"
46 directive takes a third optional type as well. The old "type" directive
47 in the tag set itself is still recognized but acts as the default type
50 Backend interface change. Individual Scan terms returned from bend_scan
51 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
54 Retrieval module enhancements. Multiple tag sets and attribute sets may
55 be specified in abstract syntax specs. Revised the error/warning for
56 logging messages reported by the retrieval module when reading the
59 Object Identifier system (oid_..) changed. The API is backwards
60 compatible but the oid-routines now allocates new OID's when needed.
61 Raw OID's may be specified in oid_getvalbyname.
63 YAZ now uses GNU configure to generate Makefile(s).
65 * Minor changes in some of the member names of DeleteResultSetRequest and
66 DeleteResultSetResponse. See include/proto.h.
68 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
69 and added member 'languages' in TargetInfo (which was missing).
71 Changed the way attribute sets are handled in the retrieval
72 module. These are now cached, just like the abstract syntaxes
75 Changed YAZ so that it links with compiled ASN.1.
77 Added Explain-schema definitions and mapping routines. The following
78 Explain categories have been implemented: AttributeDetails,
79 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
81 Fixed minor bug in Windows version of Server Library.
83 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
85 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
87 Added EXTERNAL: UNIverse Resource Report (non-standard).
89 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
90 ENUMERATED and SET OF.
92 * Added 'const' to some of the char pointer arguments for the
93 functions, data1_read_node, data1_getelementbytagname,
94 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
97 Fixed bug in data1_insert_taggeddata - the last_child member of
98 parent wasn't initialised.
100 * Changed data1_read_record and data1_read_node so that the supplied
101 "SGML"-buffer is read-only. In particular the resulting data1 - tree
102 doesn't refer to any parts of the "SGML"-buffer.
104 Fixed bug in server library (Windows version of statserv_remove).
106 * Changed code so that it compiles as C++. The type definition
107 of Odr_fun which is a member of Odr_arm was changed. The result is,
108 that an explicit typecast is needed for the fun pointer when
109 using Odr_arm - as in:
110 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
112 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
114 Implemented the new structured date and time definition as approved
115 by the ZIG. Added schemaId element to the specificTag in Espec-1
116 (also approved at the last ZIG). Thanks to RVDM.
118 Added some Object identifiers (RVDM).
120 Changed the Update Extended Service (RVDM).
122 Added command "refid" to client which specifies referenceId for
123 the following requests.
125 Implemented extended service handling for server. See ztest.c
126 for an example as well as backend.h. New handlers are registerd
129 * Changed interface for sort in server.
131 Added new members to statserv_options_block. It allows a server
132 to read options from another source than just the command line. Thanks
133 to Charles Woodfield.
135 * Changed definition of Z_Triple in file prt-grs.h - member boolean
136 renamed to zboolean. Some C++ compilers complained about the name.
138 Minor changes to gils.abs. Added index 's' (sort) on title
139 and date/time-last-modified.
143 Fixed bug in server library regarding inetd mode (-i). This bug
144 was introduced by release 1.4.
148 Added sort facility in client and backend server interface.
150 Fixed problem with dependencies in Makefile(s).
152 Fixed bugs for encoders/decoders of extended services and
155 Implemented sub-tree feature for schemas. Sub-trees are
156 referenced in *.abs-files. See explain.abs for an example
157 of the use of this feature.
159 Modified bib1.att; local attributes for ANY didn't include
160 ANY itself (only affects use of the retrieval module).
162 Fixed bug in plain SGML reader in function data1_read_node:
163 tags with prefix "var" was incorrectly interpreted as variants.
165 Added feature "sub-schemas" to enable references to - and definitions
166 of - group of elements.
168 * Removed member parent from type data1_element (in data1.h).
170 Implemented function odr_nullval() that returns the value of
173 * Removed member num_children from data1_node (in data1.h).
175 Made NT service interface part of the server library. The
176 function statserv_main uses the NT service when required and
177 calls the statserv_start / statserv_close routines.
179 Routine zget_SearchRequest and zget_PresentRequest fills
180 resultSetName/Id member with "default" instead of "Default".
182 Fixed memory leak in server. Request queue member wasn't freed.
184 Fixed nmem_exit so that memory is freed.
188 Revised the CCL parser utility to be thread safe.
190 Added function, oid_ent_to_oid, to replace the function
191 oid_getoidbyent, which is not thread safe.
193 * Added nmem_init and nmem_exit to initialize and release
194 NMEM resources. Function nmem_init should be called once in the
195 initial thread before NMEM/ODR is used. statserv.c and client.c
196 have been changed accordingly. The change was necessary to make
197 NMEM thread safe. The NMEM memory pool is shared amongst threads
198 in a process. Unix-based applications will still work fine without
201 Added NT Services interface for the the Z39.50 (statserv) Server.
202 Refer to the ztest.c source on the usage.
204 Windows 95/NT port using MSVC5.0. Project files are included in the
207 * Defined new 'global' handle for the retrieval (data1) system. The
208 new handled, data1_handle, describes the state of the data1 system.
209 This handle is passed as first argument to virtually all
210 data1 related routines. The functions data1_create and data1_destroy
211 creates and destroys a data1 handle respectively.
213 Added ODR encode stream member to all backend request structures
214 init, search, scan etc. This stream should be used to allocate all
215 memory used for the response when thread safe operation is needed.
217 Changed the comstack utility, cs_addstr, to be thread safe. The
218 returned hostname string returned by the function is now part the
221 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
222 function. The cs_straddr takes a COMSTACK handle as argument, so this
223 function must be used after cs_create and before bind/connect.
224 This function is thread safe.
226 Moved test server to 'ztest' directory - generic server code still
227 in 'server' directory.
229 Made prefix query (pquery.c) utility thread safe.
231 Added new function modifier YAZ_EXPORT to 'export' public DLL
232 functions when using windows (see include/yconfig.h).
234 Added definitions to the OID database (util/oid.c) (RVDM).
236 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
238 Added call to ccl_rpn_delete in client program.
240 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
241 release of RPN structure.
243 Added support for C++, headers uses extern "C" for public definitions.
244 With input from RVDM.
246 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
247 Thanks to Ronald van der Meer (RVDM).
249 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
251 Added support for private extensions to the OID database
252 (oid_setprivateoids()). Thanks to RVDM.
254 Added optional, physical ANY (key replication)
256 Fixed null-reference problem in GRS-1 output filter.
258 Proximity operator added to Prefix Query Format (PQF).
260 In test client command "base" accepts multiple databases.
262 Fixed bug in cs_close stack that caused trouble with WINSOCK.
266 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
268 Smallish bug-fixes in the new encoders/decoders (explain).
270 Bug fixed in DeleteRequest.
272 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
274 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
276 Added SOIF syntax (using private OID for now) to retrieval module and client.
278 Added Update extended service.
280 Added SearchResult-1 additional info structure.
282 Added optional CCL (ISO8777) interpreter as separate module. Available
285 --- 1.2 1996/6/10 (1st anniversary release)
287 Added Summary record syntax. Lightly tested.
289 Added OPAC record syntax. Untested.
291 Added ResourceReport service encoders/decoders. Untested.
293 Fixed bug in z_Unit - wrong tagging on unitSystem.
295 Fixed bug in the DiagRecs decoder.
297 Added options for max PDU size and session timeout to frontend-server.
299 Added documentation of query-language parsers and other supporting utilities.
301 [frontend-server] Added Attribute set to the bend_scanrequest API.
303 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
304 surrogate diagnostics were generated.
306 [retrieval] Allow multiple local values for attribute.
308 [retrieval] Allow multiple attributes per element in .abs files. index type.
310 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
314 Minor changes, mostly specific to Zebra's requirements (retrieval)
318 Repaired bug in frontend server when running multiple listening
319 endpoints in dynamic mode.
321 z_External() now won't break if a known, ASN.1 value comes encapsulated
322 in an octet-string. The value will pass through unmodified in an Odr_oct.
324 Added a bit of code to the demo client to decode & display
325 ASN.1-structured records represented in the octet-aligned branch of
326 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
328 Added z_ext_getentbyref() to the ASN module. Doc updated.
330 * Completed the SCAN definition in the ASN module. This may break SCAN
331 code based on older YAZ-versions at compile-time. The fix is easy -
334 * Added 'displayTerm' and OtherInformation to the TermInfo structure
335 under the SCAN definition. Remember to initialize this, server-people.
337 Comstack should now support the WAIS protocol in TCP/IP mode. Note
338 that this does not extend to ODR and ASN.
340 Comstack allows insertion of established socket (primarily for
341 inetd-operation of servers). Doc updated.
343 Front-end server can now start from the inetd in TCP mode. Doc
350 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
351 the rank and record number.
353 Adjustments to the frontend server.
355 Fixed diagnostic BER dumper. It ignored the file argument.
359 Various changes to retrieval module.
361 Changed the union discriminators of the protocol files from enums to
362 ints paired with #defines.
364 *Changed oident.class to oident.oclass to avoid a reserved word in C++
367 *Changed operator in the RPN structure to 'roperator', again to avoid a
370 Fixed problems in Explain decoders/encoders.
374 Memory bug in log module fixed.
378 Occasional malloc() of 0 bytes fixed in d1_espec.c.
380 Bug in Explain DatabaseInfo module fixed.
382 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
386 The shift to v1.0 signals that we now consider the *core* functionality
387 of YAZ reasonably stable (the core being more or less equivalent to
388 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
389 tested (Explain not at all - though that will happen soonish).
391 Minor changes to code to support Windows port.
393 Various minor changes after we're getting to use GRS-1 & co. more.
395 Added Espec-1 format.
397 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
398 of the protocol and it cannot be selected when encoding (maps into 'string'
399 when decoding). Needed to talk to some servers.
401 Demo client can request simple element set names.
403 Added Diagnostic Format encoders/decoders.
405 Added simple Close handling to frontend server (no hooks for resource
406 reporting yet), and demonstration client.
408 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
412 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
413 handled incorrectly when records were requested in the searchResponse. This
414 will only affect you if you use the frontend-server.
416 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
417 Test-client will ask for and print GRS1. Ztest will return dummy records
420 Added Explain encoders/decoders to the service-level API. Untested.
422 Added Extended Services: Item Order encoders and decoders to the Service-
423 level API. Untested. We could use a recent copy of the pertinent bits
424 of the ILL protocol to add those bits.
426 Added diagnostic format 1 encoders/decoders to the service-level API.
429 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
430 odr_cons.c, which causes a more correct output.
432 Fixed handling of searchRequest in frontend server. NextResultSetPosition
433 was always set to 0 when no records were requested in the searchRequest.
435 * Added better external-handling. This shouldn't harm old code that
436 *encodes* externals. It can break code that looks for a
437 'single-ASN1-type' representation, since those types that are known
438 are now decoded immediately. Look at the SUTRS sample code in
439 seshigh.c and client.c. Documentation updated.
441 Handling of structured records in bend_fetchresponse. Length -1 marks
442 structured record, type is deduced from format field.
445 Fairly quick maintenance release to add SUTRS support.
447 Fixed handling of SUTRS records in the demonstration client.
449 * Added format field to the bend_fetchrequest and bend_fetchresponce
450 structures of the backend API (frontend server). When the record is
451 returned, the value of the format field is mapped to an OID. The
452 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
453 of the record. The special value VAL_NONE in the bend_request means
454 that no specific format was requested by the client. Documentation
455 updated accordingly. Test server (ztest) will return a fixed dummy
456 SUTRS record if your client requests SUTRS.
458 Documentation updated accordingly.
460 You can now set external libraries and RANLIB support in the top-level
464 First public release.