1 Possible compatibility problems with earlier versions marked with '*'.
3 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
4 version so that it supports both new - and old version of DB Update
6 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
7 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
8 change. The name parameter can be set to 0 in which no name is specified
9 for the construction. The macros odr_implicit and odr_explicit sets name
10 parameter to zero for the construction involved. New macros
11 odr_implicit_tag and odr_explicit_tag are similar to the others,
12 except that a name parameter is added. For programmers' that don't use
13 ODR they probably only need to change the call to z_APDU and z_External.
15 Added access control facility by interfacing the TCP wrapper library.
16 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
17 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
18 name of the daemon and enables the access control as specified in
19 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
21 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
22 den Dool <H.M.vdnDool@kub.nl>.
24 Added reference ID parameter to most functions in server API - refer
25 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
27 Changed name of ccl library to libccl.a (was ccl.a).
29 Fixed bug in decoder for Explain (Category TargetInfo).
31 Added support for GNU readline in client. Thanks to Jacob Poulsen
32 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
34 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
35 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
36 IMPLEMENTATION! This change was made to the development version before
37 the ZIG decided to retract the amendment. If any users MUST be
38 compatible with the original Update definition, PLEASE CONTACT US, and
39 we will include a separate definition corresponding to the old Update
40 ES. Note that because of the change to the ASN.1 of the
41 TaskPackageRecordStructure we cannot define a single structure that
42 will support both versions.
44 * Added const modifier to buffer parameter for some ODR/BER encoding
45 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
46 completeWAIS, odr_dumpBER.
48 Fixed bug in client.c which caused a crash when a scanResponse didn't
49 contain positionOfTerm.
51 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
52 * will cause an error in a client if a non-YAZ target sends both a
53 * list of Scan entries and non-surrogate diagnostics.
55 Retrieval module enhancements. Tag sets may be typed in the reference
56 to it. From the .abs-file the "tagset" directive takes a third optional
57 integer type for the tag set referenced. From a .tag-file the "include"
58 directive takes a third optional type as well. The old "type" directive
59 in the tag set itself is still recognized but acts as the default type
62 Backend interface change. Individual Scan terms returned from bend_scan
63 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
66 Retrieval module enhancements. Multiple tag sets and attribute sets may
67 be specified in abstract syntax specs. Revised the error/warning for
68 logging messages reported by the retrieval module when reading the
71 Object Identifier system (oid_..) changed. The API is backwards
72 compatible but the oid-routines now allocates new OID's when needed.
73 Raw OID's may be specified in oid_getvalbyname.
75 YAZ now uses GNU configure to generate Makefile(s).
77 * Minor changes in some of the member names of DeleteResultSetRequest and
78 DeleteResultSetResponse. See include/proto.h.
80 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
81 and added member 'languages' in TargetInfo (which was missing).
83 Changed the way attribute sets are handled in the retrieval
84 module. These are now cached, just like the abstract syntaxes
87 Changed YAZ so that it links with compiled ASN.1.
89 Added Explain-schema definitions and mapping routines. The following
90 Explain categories have been implemented: AttributeDetails,
91 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
93 Fixed minor bug in Windows version of Server Library.
95 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
97 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
99 Added EXTERNAL: UNIverse Resource Report (non-standard).
101 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
102 ENUMERATED and SET OF.
104 * Added 'const' to some of the char pointer arguments for the
105 functions, data1_read_node, data1_getelementbytagname,
106 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
109 Fixed bug in data1_insert_taggeddata - the last_child member of
110 parent wasn't initialised.
112 * Changed data1_read_record and data1_read_node so that the supplied
113 "SGML"-buffer is read-only. In particular the resulting data1 - tree
114 doesn't refer to any parts of the "SGML"-buffer.
116 Fixed bug in server library (Windows version of statserv_remove).
118 * Changed code so that it compiles as C++. The type definition
119 of Odr_fun which is a member of Odr_arm was changed. The result is,
120 that an explicit typecast is needed for the fun pointer when
121 using Odr_arm - as in:
122 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
124 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
126 Implemented the new structured date and time definition as approved
127 by the ZIG. Added schemaId element to the specificTag in Espec-1
128 (also approved at the last ZIG). Thanks to RVDM.
130 Added some Object identifiers (RVDM).
132 Changed the Update Extended Service (RVDM).
134 Added command "refid" to client which specifies referenceId for
135 the following requests.
137 Implemented extended service handling for server. See ztest.c
138 for an example as well as backend.h. New handlers are registerd
141 * Changed interface for sort in server.
143 Added new members to statserv_options_block. It allows a server
144 to read options from another source than just the command line. Thanks
145 to Charles Woodfield.
147 * Changed definition of Z_Triple in file prt-grs.h - member boolean
148 renamed to zboolean. Some C++ compilers complained about the name.
150 Minor changes to gils.abs. Added index 's' (sort) on title
151 and date/time-last-modified.
155 Fixed bug in server library regarding inetd mode (-i). This bug
156 was introduced by release 1.4.
160 Added sort facility in client and backend server interface.
162 Fixed problem with dependencies in Makefile(s).
164 Fixed bugs for encoders/decoders of extended services and
167 Implemented sub-tree feature for schemas. Sub-trees are
168 referenced in *.abs-files. See explain.abs for an example
169 of the use of this feature.
171 Modified bib1.att; local attributes for ANY didn't include
172 ANY itself (only affects use of the retrieval module).
174 Fixed bug in plain SGML reader in function data1_read_node:
175 tags with prefix "var" was incorrectly interpreted as variants.
177 Added feature "sub-schemas" to enable references to - and definitions
178 of - group of elements.
180 * Removed member parent from type data1_element (in data1.h).
182 Implemented function odr_nullval() that returns the value of
185 * Removed member num_children from data1_node (in data1.h).
187 Made NT service interface part of the server library. The
188 function statserv_main uses the NT service when required and
189 calls the statserv_start / statserv_close routines.
191 Routine zget_SearchRequest and zget_PresentRequest fills
192 resultSetName/Id member with "default" instead of "Default".
194 Fixed memory leak in server. Request queue member wasn't freed.
196 Fixed nmem_exit so that memory is freed.
200 Revised the CCL parser utility to be thread safe.
202 Added function, oid_ent_to_oid, to replace the function
203 oid_getoidbyent, which is not thread safe.
205 * Added nmem_init and nmem_exit to initialize and release
206 NMEM resources. Function nmem_init should be called once in the
207 initial thread before NMEM/ODR is used. statserv.c and client.c
208 have been changed accordingly. The change was necessary to make
209 NMEM thread safe. The NMEM memory pool is shared amongst threads
210 in a process. Unix-based applications will still work fine without
213 Added NT Services interface for the the Z39.50 (statserv) Server.
214 Refer to the ztest.c source on the usage.
216 Windows 95/NT port using MSVC5.0. Project files are included in the
219 * Defined new 'global' handle for the retrieval (data1) system. The
220 new handled, data1_handle, describes the state of the data1 system.
221 This handle is passed as first argument to virtually all
222 data1 related routines. The functions data1_create and data1_destroy
223 creates and destroys a data1 handle respectively.
225 Added ODR encode stream member to all backend request structures
226 init, search, scan etc. This stream should be used to allocate all
227 memory used for the response when thread safe operation is needed.
229 Changed the comstack utility, cs_addstr, to be thread safe. The
230 returned hostname string returned by the function is now part the
233 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
234 function. The cs_straddr takes a COMSTACK handle as argument, so this
235 function must be used after cs_create and before bind/connect.
236 This function is thread safe.
238 Moved test server to 'ztest' directory - generic server code still
239 in 'server' directory.
241 Made prefix query (pquery.c) utility thread safe.
243 Added new function modifier YAZ_EXPORT to 'export' public DLL
244 functions when using windows (see include/yconfig.h).
246 Added definitions to the OID database (util/oid.c) (RVDM).
248 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
250 Added call to ccl_rpn_delete in client program.
252 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
253 release of RPN structure.
255 Added support for C++, headers uses extern "C" for public definitions.
256 With input from RVDM.
258 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
259 Thanks to Ronald van der Meer (RVDM).
261 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
263 Added support for private extensions to the OID database
264 (oid_setprivateoids()). Thanks to RVDM.
266 Added optional, physical ANY (key replication)
268 Fixed null-reference problem in GRS-1 output filter.
270 Proximity operator added to Prefix Query Format (PQF).
272 In test client command "base" accepts multiple databases.
274 Fixed bug in cs_close stack that caused trouble with WINSOCK.
278 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
280 Smallish bug-fixes in the new encoders/decoders (explain).
282 Bug fixed in DeleteRequest.
284 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
286 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
288 Added SOIF syntax (using private OID for now) to retrieval module and client.
290 Added Update extended service.
292 Added SearchResult-1 additional info structure.
294 Added optional CCL (ISO8777) interpreter as separate module. Available
297 --- 1.2 1996/6/10 (1st anniversary release)
299 Added Summary record syntax. Lightly tested.
301 Added OPAC record syntax. Untested.
303 Added ResourceReport service encoders/decoders. Untested.
305 Fixed bug in z_Unit - wrong tagging on unitSystem.
307 Fixed bug in the DiagRecs decoder.
309 Added options for max PDU size and session timeout to frontend-server.
311 Added documentation of query-language parsers and other supporting utilities.
313 [frontend-server] Added Attribute set to the bend_scanrequest API.
315 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
316 surrogate diagnostics were generated.
318 [retrieval] Allow multiple local values for attribute.
320 [retrieval] Allow multiple attributes per element in .abs files. index type.
322 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
326 Minor changes, mostly specific to Zebra's requirements (retrieval)
330 Repaired bug in frontend server when running multiple listening
331 endpoints in dynamic mode.
333 z_External() now won't break if a known, ASN.1 value comes encapsulated
334 in an octet-string. The value will pass through unmodified in an Odr_oct.
336 Added a bit of code to the demo client to decode & display
337 ASN.1-structured records represented in the octet-aligned branch of
338 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
340 Added z_ext_getentbyref() to the ASN module. Doc updated.
342 * Completed the SCAN definition in the ASN module. This may break SCAN
343 code based on older YAZ-versions at compile-time. The fix is easy -
346 * Added 'displayTerm' and OtherInformation to the TermInfo structure
347 under the SCAN definition. Remember to initialize this, server-people.
349 Comstack should now support the WAIS protocol in TCP/IP mode. Note
350 that this does not extend to ODR and ASN.
352 Comstack allows insertion of established socket (primarily for
353 inetd-operation of servers). Doc updated.
355 Front-end server can now start from the inetd in TCP mode. Doc
362 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
363 the rank and record number.
365 Adjustments to the frontend server.
367 Fixed diagnostic BER dumper. It ignored the file argument.
371 Various changes to retrieval module.
373 Changed the union discriminators of the protocol files from enums to
374 ints paired with #defines.
376 *Changed oident.class to oident.oclass to avoid a reserved word in C++
379 *Changed operator in the RPN structure to 'roperator', again to avoid a
382 Fixed problems in Explain decoders/encoders.
386 Memory bug in log module fixed.
390 Occasional malloc() of 0 bytes fixed in d1_espec.c.
392 Bug in Explain DatabaseInfo module fixed.
394 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
398 The shift to v1.0 signals that we now consider the *core* functionality
399 of YAZ reasonably stable (the core being more or less equivalent to
400 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
401 tested (Explain not at all - though that will happen soonish).
403 Minor changes to code to support Windows port.
405 Various minor changes after we're getting to use GRS-1 & co. more.
407 Added Espec-1 format.
409 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
410 of the protocol and it cannot be selected when encoding (maps into 'string'
411 when decoding). Needed to talk to some servers.
413 Demo client can request simple element set names.
415 Added Diagnostic Format encoders/decoders.
417 Added simple Close handling to frontend server (no hooks for resource
418 reporting yet), and demonstration client.
420 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
424 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
425 handled incorrectly when records were requested in the searchResponse. This
426 will only affect you if you use the frontend-server.
428 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
429 Test-client will ask for and print GRS1. Ztest will return dummy records
432 Added Explain encoders/decoders to the service-level API. Untested.
434 Added Extended Services: Item Order encoders and decoders to the Service-
435 level API. Untested. We could use a recent copy of the pertinent bits
436 of the ILL protocol to add those bits.
438 Added diagnostic format 1 encoders/decoders to the service-level API.
441 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
442 odr_cons.c, which causes a more correct output.
444 Fixed handling of searchRequest in frontend server. NextResultSetPosition
445 was always set to 0 when no records were requested in the searchRequest.
447 * Added better external-handling. This shouldn't harm old code that
448 *encodes* externals. It can break code that looks for a
449 'single-ASN1-type' representation, since those types that are known
450 are now decoded immediately. Look at the SUTRS sample code in
451 seshigh.c and client.c. Documentation updated.
453 Handling of structured records in bend_fetchresponse. Length -1 marks
454 structured record, type is deduced from format field.
457 Fairly quick maintenance release to add SUTRS support.
459 Fixed handling of SUTRS records in the demonstration client.
461 * Added format field to the bend_fetchrequest and bend_fetchresponce
462 structures of the backend API (frontend server). When the record is
463 returned, the value of the format field is mapped to an OID. The
464 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
465 of the record. The special value VAL_NONE in the bend_request means
466 that no specific format was requested by the client. Documentation
467 updated accordingly. Test server (ztest) will return a fixed dummy
468 SUTRS record if your client requests SUTRS.
470 Documentation updated accordingly.
472 You can now set external libraries and RANLIB support in the top-level
476 First public release.