1 Possible compatibility problems with earlier versions marked with '*'.
3 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
4 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
5 IMPLEMENTATION! This change was made to the development version before
6 the ZIG decided to retract the amendment. If any users MUST be
7 compatible with the original Update definition, PLEASE CONTACT US, and
8 we will include a separate definition corresponding to the old Update
9 ES. Note that because of the change to the ASN.1 of the
10 TaskPackageRecordStructure we cannot define a single structure that
11 will support both versions.
13 * Added const modifier to buffer parameter for some ODR/BER encoding
14 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
15 completeWAIS, odr_dumpBER.
17 Fixed bug in client.c which caused a crash when a scanResponse didn't
18 contain positionOfTerm.
20 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
21 * will cause an error in a client if a non-YAZ target sends both a
22 * list of Scan entries and non-surrogate diagnostics.
24 Retrieval module enhancements. Tag sets may be typed in the reference
25 to it. From the .abs-file the "tagset" directive takes a third optional
26 integer type for the tag set referenced. From a .tag-file the "include"
27 directive takes a third optional type as well. The old "type" directive
28 in the tag set itself is still recognized but acts as the default type
31 Backend interface change. Individual Scan terms returned from bend_scan
32 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
35 Retrieval module enhancements. Multiple tag sets and attribute sets may
36 be specified in abstract syntax specs. Revised the error/warning for
37 logging messages reported by the retrieval module when reading the
40 Object Identifier system (oid_..) changed. The API is backwards
41 compatible but the oid-routines now allocates new OID's when needed.
42 Raw OID's may be specified in oid_getvalbyname.
44 YAZ now uses GNU configure to generate Makefile(s).
46 * Minor changes in some of the member names of DeleteResultSetRequest and
47 DeleteResultSetResponse. See include/proto.h.
49 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
50 and added member 'languages' in TargetInfo (which was missing).
52 Changed the way attribute sets are handled in the retrieval
53 module. These are now cached, just like the abstract syntaxes
56 Changed YAZ so that it links with compiled ASN.1.
58 Added Explain-schema definitions and mapping routines. The following
59 Explain categories have been implemented: AttributeDetails,
60 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
62 Fixed minor bug in Windows version of Server Library.
64 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
66 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
68 Added EXTERNAL: UNIverse Resource Report (non-standard).
70 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
71 ENUMERATED and SET OF.
73 * Added 'const' to some of the char pointer arguments for the
74 functions, data1_read_node, data1_getelementbytagname,
75 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
78 Fixed bug in data1_insert_taggeddata - the last_child member of
79 parent wasn't initialised.
81 * Changed data1_read_record and data1_read_node so that the supplied
82 "SGML"-buffer is read-only. In particular the resulting data1 - tree
83 doesn't refer to any parts of the "SGML"-buffer.
85 Fixed bug in server library (Windows version of statserv_remove).
87 * Changed code so that it compiles as C++. The type definition
88 of Odr_fun which is a member of Odr_arm was changed. The result is,
89 that an explicit typecast is needed for the fun pointer when
90 using Odr_arm - as in:
91 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
93 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
95 Implemented the new structured date and time definition as approved
96 by the ZIG. Added schemaId element to the specificTag in Espec-1
97 (also approved at the last ZIG). Thanks to RVDM.
99 Added some Object identifiers (RVDM).
101 Changed the Update Extended Service (RVDM).
103 Added command "refid" to client which specifies referenceId for
104 the following requests.
106 Implemented extended service handling for server. See ztest.c
107 for an example as well as backend.h. New handlers are registerd
110 * Changed interface for sort in server.
112 Added new members to statserv_options_block. It allows a server
113 to read options from another source than just the command line. Thanks
114 to Charles Woodfield.
116 * Changed definition of Z_Triple in file prt-grs.h - member boolean
117 renamed to zboolean. Some C++ compilers complained about the name.
119 Minor changes to gils.abs. Added index 's' (sort) on title
120 and date/time-last-modified.
124 Fixed bug in server library regarding inetd mode (-i). This bug
125 was introduced by release 1.4.
129 Added sort facility in client and backend server interface.
131 Fixed problem with dependencies in Makefile(s).
133 Fixed bugs for encoders/decoders of extended services and
136 Implemented sub-tree feature for schemas. Sub-trees are
137 referenced in *.abs-files. See explain.abs for an example
138 of the use of this feature.
140 Modified bib1.att; local attributes for ANY didn't include
141 ANY itself (only affects use of the retrieval module).
143 Fixed bug in plain SGML reader in function data1_read_node:
144 tags with prefix "var" was incorrectly interpreted as variants.
146 Added feature "sub-schemas" to enable references to - and definitions
147 of - group of elements.
149 * Removed member parent from type data1_element (in data1.h).
151 Implemented function odr_nullval() that returns the value of
154 * Removed member num_children from data1_node (in data1.h).
156 Made NT service interface part of the server library. The
157 function statserv_main uses the NT service when required and
158 calls the statserv_start / statserv_close routines.
160 Routine zget_SearchRequest and zget_PresentRequest fills
161 resultSetName/Id member with "default" instead of "Default".
163 Fixed memory leak in server. Request queue member wasn't freed.
165 Fixed nmem_exit so that memory is freed.
169 Revised the CCL parser utility to be thread safe.
171 Added function, oid_ent_to_oid, to replace the function
172 oid_getoidbyent, which is not thread safe.
174 * Added nmem_init and nmem_exit to initialize and release
175 NMEM resources. Function nmem_init should be called once in the
176 initial thread before NMEM/ODR is used. statserv.c and client.c
177 have been changed accordingly. The change was necessary to make
178 NMEM thread safe. The NMEM memory pool is shared amongst threads
179 in a process. Unix-based applications will still work fine without
182 Added NT Services interface for the the Z39.50 (statserv) Server.
183 Refer to the ztest.c source on the usage.
185 Windows 95/NT port using MSVC5.0. Project files are included in the
188 * Defined new 'global' handle for the retrieval (data1) system. The
189 new handled, data1_handle, describes the state of the data1 system.
190 This handle is passed as first argument to virtually all
191 data1 related routines. The functions data1_create and data1_destroy
192 creates and destroys a data1 handle respectively.
194 Added ODR encode stream member to all backend request structures
195 init, search, scan etc. This stream should be used to allocate all
196 memory used for the response when thread safe operation is needed.
198 Changed the comstack utility, cs_addstr, to be thread safe. The
199 returned hostname string returned by the function is now part the
202 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
203 function. The cs_straddr takes a COMSTACK handle as argument, so this
204 function must be used after cs_create and before bind/connect.
205 This function is thread safe.
207 Moved test server to 'ztest' directory - generic server code still
208 in 'server' directory.
210 Made prefix query (pquery.c) utility thread safe.
212 Added new function modifier YAZ_EXPORT to 'export' public DLL
213 functions when using windows (see include/yconfig.h).
215 Added definitions to the OID database (util/oid.c) (RVDM).
217 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
219 Added call to ccl_rpn_delete in client program.
221 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
222 release of RPN structure.
224 Added support for C++, headers uses extern "C" for public definitions.
225 With input from RVDM.
227 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
228 Thanks to Ronald van der Meer (RVDM).
230 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
232 Added support for private extensions to the OID database
233 (oid_setprivateoids()). Thanks to RVDM.
235 Added optional, physical ANY (key replication)
237 Fixed null-reference problem in GRS-1 output filter.
239 Proximity operator added to Prefix Query Format (PQF).
241 In test client command "base" accepts multiple databases.
243 Fixed bug in cs_close stack that caused trouble with WINSOCK.
247 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
249 Smallish bug-fixes in the new encoders/decoders (explain).
251 Bug fixed in DeleteRequest.
253 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
255 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
257 Added SOIF syntax (using private OID for now) to retrieval module and client.
259 Added Update extended service.
261 Added SearchResult-1 additional info structure.
263 Added optional CCL (ISO8777) interpreter as separate module. Available
266 --- 1.2 1996/6/10 (1st anniversary release)
268 Added Summary record syntax. Lightly tested.
270 Added OPAC record syntax. Untested.
272 Added ResourceReport service encoders/decoders. Untested.
274 Fixed bug in z_Unit - wrong tagging on unitSystem.
276 Fixed bug in the DiagRecs decoder.
278 Added options for max PDU size and session timeout to frontend-server.
280 Added documentation of query-language parsers and other supporting utilities.
282 [frontend-server] Added Attribute set to the bend_scanrequest API.
284 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
285 surrogate diagnostics were generated.
287 [retrieval] Allow multiple local values for attribute.
289 [retrieval] Allow multiple attributes per element in .abs files. index type.
291 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
295 Minor changes, mostly specific to Zebra's requirements (retrieval)
299 Repaired bug in frontend server when running multiple listening
300 endpoints in dynamic mode.
302 z_External() now won't break if a known, ASN.1 value comes encapsulated
303 in an octet-string. The value will pass through unmodified in an Odr_oct.
305 Added a bit of code to the demo client to decode & display
306 ASN.1-structured records represented in the octet-aligned branch of
307 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
309 Added z_ext_getentbyref() to the ASN module. Doc updated.
311 * Completed the SCAN definition in the ASN module. This may break SCAN
312 code based on older YAZ-versions at compile-time. The fix is easy -
315 * Added 'displayTerm' and OtherInformation to the TermInfo structure
316 under the SCAN definition. Remember to initialize this, server-people.
318 Comstack should now support the WAIS protocol in TCP/IP mode. Note
319 that this does not extend to ODR and ASN.
321 Comstack allows insertion of established socket (primarily for
322 inetd-operation of servers). Doc updated.
324 Front-end server can now start from the inetd in TCP mode. Doc
331 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
332 the rank and record number.
334 Adjustments to the frontend server.
336 Fixed diagnostic BER dumper. It ignored the file argument.
340 Various changes to retrieval module.
342 Changed the union discriminators of the protocol files from enums to
343 ints paired with #defines.
345 *Changed oident.class to oident.oclass to avoid a reserved word in C++
348 *Changed operator in the RPN structure to 'roperator', again to avoid a
351 Fixed problems in Explain decoders/encoders.
355 Memory bug in log module fixed.
359 Occasional malloc() of 0 bytes fixed in d1_espec.c.
361 Bug in Explain DatabaseInfo module fixed.
363 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
367 The shift to v1.0 signals that we now consider the *core* functionality
368 of YAZ reasonably stable (the core being more or less equivalent to
369 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
370 tested (Explain not at all - though that will happen soonish).
372 Minor changes to code to support Windows port.
374 Various minor changes after we're getting to use GRS-1 & co. more.
376 Added Espec-1 format.
378 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
379 of the protocol and it cannot be selected when encoding (maps into 'string'
380 when decoding). Needed to talk to some servers.
382 Demo client can request simple element set names.
384 Added Diagnostic Format encoders/decoders.
386 Added simple Close handling to frontend server (no hooks for resource
387 reporting yet), and demonstration client.
389 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
393 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
394 handled incorrectly when records were requested in the searchResponse. This
395 will only affect you if you use the frontend-server.
397 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
398 Test-client will ask for and print GRS1. Ztest will return dummy records
401 Added Explain encoders/decoders to the service-level API. Untested.
403 Added Extended Services: Item Order encoders and decoders to the Service-
404 level API. Untested. We could use a recent copy of the pertinent bits
405 of the ILL protocol to add those bits.
407 Added diagnostic format 1 encoders/decoders to the service-level API.
410 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
411 odr_cons.c, which causes a more correct output.
413 Fixed handling of searchRequest in frontend server. NextResultSetPosition
414 was always set to 0 when no records were requested in the searchRequest.
416 * Added better external-handling. This shouldn't harm old code that
417 *encodes* externals. It can break code that looks for a
418 'single-ASN1-type' representation, since those types that are known
419 are now decoded immediately. Look at the SUTRS sample code in
420 seshigh.c and client.c. Documentation updated.
422 Handling of structured records in bend_fetchresponse. Length -1 marks
423 structured record, type is deduced from format field.
426 Fairly quick maintenance release to add SUTRS support.
428 Fixed handling of SUTRS records in the demonstration client.
430 * Added format field to the bend_fetchrequest and bend_fetchresponce
431 structures of the backend API (frontend server). When the record is
432 returned, the value of the format field is mapped to an OID. The
433 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
434 of the record. The special value VAL_NONE in the bend_request means
435 that no specific format was requested by the client. Documentation
436 updated accordingly. Test server (ztest) will return a fixed dummy
437 SUTRS record if your client requests SUTRS.
439 Documentation updated accordingly.
441 You can now set external libraries and RANLIB support in the top-level
445 First public release.