1 Possible compatibility problems with earlier versions marked with '*'.
3 Added record_syntax OID for fetch interface for backend API.
5 Config file yaz-config now accepts options so that it returns specific
6 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
8 Shared library support for UNIX using GNU libtool.
10 * Modified backend interface. Request/Response struct's replaced by
11 one read/write C struct. For example bend_fetchrequest and
12 bend_fetchresult have been replaced by single bend_fetch_rr struct.
13 Every handler - even search has to be registered in bend_init
14 handler. This means that the YAZ library no longer refers to
15 external functions and it makes it possible to make the whole
16 thing a single DLL/SO.
18 Added Segment handler for backend server.
20 Added Zmbol/Zebra administrative functions to YAZ client.
22 Threaded frontend server on UNIX (when POSIX Threads are available).
23 Starting the server with option -T enables multi-threading.
27 Added configure option --enable-comp/disable-comp to control use
28 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
29 located in sub directory asn.
31 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
32 in ${exec_prefix}/bin along with the other programs yaz-client and
35 GNU automake used to maintain makefiles.
39 Changed retrieval module so that we can load records with no abstract
40 syntax defined. Tagpaths in these records are fully composed of string
43 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
47 On UNIX, the generated makefile now supports a proper 'make install'.
48 The prefix can be set via GNU configure to set the install location
49 (default is /usr/local).
51 * YAZ programs client and ztest were renamed to yaz-client and
52 yaz-ztest to avoid conflicts when users install YAZ in "standard"
53 locations, such as /usr/bin,/usr/local/bin,etc.
55 * YAZ Header files were moved from include to include/yaz. YAZ Header
56 files are referred to as include <yaz/log.h> rather than <log.h>.
57 The YAZ include path (-I ..) is therefore the same as before. Programmers
58 should update their #include statements or use -Ipath/include/yaz
59 instead. The main motivation for doing this change is that YAZ header files
60 can be installed in "standard" locations /usr/include,/usr/local/include
61 without introducing conflicts, since ALL YAZ header files are stored
62 in subdirectory yaz (under /usr/include for example).
64 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
65 rather than project/workspace files. We switched because project files
66 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
69 Changed name of logging function, logf, to yaz_log, to prevent name
70 clash with some math-log functions. The YAZ header log.h defines logf
71 to yaz_log (#define) so there should be no incompatibilities by this
74 Added bend_start/bend_stop handlers for server. These handler are
75 called on start/stop of server. For windows they are called whenever
76 a service is started/stopped.
78 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
79 a fairly small ASN.1 compiler written in Tcl. The compiler is located
80 in util/yc.tcl. The auto-generated C code structures are, in a few
81 cases, incompatible with the old decoders. There are differences in the
82 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
83 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
84 The preprocessor variable ASN_COMPILED is defined when the compiled
85 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
86 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
87 wish to use the old encoders/decoders you can specify --disable-yc
90 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
91 version so that it supports both new - and old version of DB Update
93 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
94 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
95 change. The name parameter can be set to 0 in which no name is specified
96 for the construction. The macros odr_implicit and odr_explicit sets name
97 parameter to zero for the construction involved. New macros
98 odr_implicit_tag and odr_explicit_tag are similar to the others,
99 except that a name parameter is added. For programmers' that don't use
100 ODR they probably only need to change the call to z_APDU and z_External.
102 Added access control facility by interfacing the TCP wrapper library.
103 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
104 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
105 name of the daemon and enables the access control as specified in
106 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
108 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
109 den Dool <H.M.vdnDool@kub.nl>.
111 Added reference ID parameter to most functions in server API - refer
112 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
114 Changed name of ccl library to libccl.a (was ccl.a).
116 Fixed bug in decoder for Explain (Category TargetInfo).
118 Added support for GNU readline in client. Thanks to Jacob Poulsen
119 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
121 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
122 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
123 IMPLEMENTATION! This change was made to the development version before
124 the ZIG decided to retract the amendment. If any users MUST be
125 compatible with the original Update definition, PLEASE CONTACT US, and
126 we will include a separate definition corresponding to the old Update
127 ES. Note that because of the change to the ASN.1 of the
128 TaskPackageRecordStructure we cannot define a single structure that
129 will support both versions.
131 * Added const modifier to buffer parameter for some ODR/BER encoding
132 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
133 completeWAIS, odr_dumpBER.
135 Fixed bug in client.c which caused a crash when a scanResponse didn't
136 contain positionOfTerm.
138 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
139 * will cause an error in a client if a non-YAZ target sends both a
140 * list of Scan entries and non-surrogate diagnostics.
142 Retrieval module enhancements. Tag sets may be typed in the reference
143 to it. From the .abs-file the "tagset" directive takes a third optional
144 integer type for the tag set referenced. From a .tag-file the "include"
145 directive takes a third optional type as well. The old "type" directive
146 in the tag set itself is still recognized but acts as the default type
149 Backend interface change. Individual Scan terms returned from bend_scan
150 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
151 in include/backend.h.
153 Retrieval module enhancements. Multiple tag sets and attribute sets may
154 be specified in abstract syntax specs. Revised the error/warning for
155 logging messages reported by the retrieval module when reading the
158 Object Identifier system (oid_..) changed. The API is backwards
159 compatible but the oid-routines now allocates new OID's when needed.
160 Raw OID's may be specified in oid_getvalbyname.
162 YAZ now uses GNU configure to generate Makefile(s).
164 * Minor changes in some of the member names of DeleteResultSetRequest and
165 DeleteResultSetResponse. See include/proto.h.
167 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
168 and added member 'languages' in TargetInfo (which was missing).
170 Changed the way attribute sets are handled in the retrieval
171 module. These are now cached, just like the abstract syntaxes
174 Changed YAZ so that it links with compiled ASN.1.
176 Added Explain-schema definitions and mapping routines. The following
177 Explain categories have been implemented: AttributeDetails,
178 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
180 Fixed minor bug in Windows version of Server Library.
182 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
184 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
186 Added EXTERNAL: UNIverse Resource Report (non-standard).
188 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
189 ENUMERATED and SET OF.
191 * Added 'const' to some of the char pointer arguments for the
192 functions, data1_read_node, data1_getelementbytagname,
193 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
196 Fixed bug in data1_insert_taggeddata - the last_child member of
197 parent wasn't initialised.
199 * Changed data1_read_record and data1_read_node so that the supplied
200 "SGML"-buffer is read-only. In particular the resulting data1 - tree
201 doesn't refer to any parts of the "SGML"-buffer.
203 Fixed bug in server library (Windows version of statserv_remove).
205 * Changed code so that it compiles as C++. The type definition
206 of Odr_fun which is a member of Odr_arm was changed. The result is,
207 that an explicit typecast is needed for the fun pointer when
208 using Odr_arm - as in:
209 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
211 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
213 Implemented the new structured date and time definition as approved
214 by the ZIG. Added schemaId element to the specificTag in Espec-1
215 (also approved at the last ZIG). Thanks to RVDM.
217 Added some Object identifiers (RVDM).
219 Changed the Update Extended Service (RVDM).
221 Added command "refid" to client which specifies referenceId for
222 the following requests.
224 Implemented extended service handling for server. See ztest.c
225 for an example as well as backend.h. New handlers are registerd
228 * Changed interface for sort in server.
230 Added new members to statserv_options_block. It allows a server
231 to read options from another source than just the command line. Thanks
232 to Charles Woodfield.
234 * Changed definition of Z_Triple in file prt-grs.h - member boolean
235 renamed to zboolean. Some C++ compilers complained about the name.
237 Minor changes to gils.abs. Added index 's' (sort) on title
238 and date/time-last-modified.
242 Fixed bug in server library regarding inetd mode (-i). This bug
243 was introduced by release 1.4.
247 Added sort facility in client and backend server interface.
249 Fixed problem with dependencies in Makefile(s).
251 Fixed bugs for encoders/decoders of extended services and
254 Implemented sub-tree feature for schemas. Sub-trees are
255 referenced in *.abs-files. See explain.abs for an example
256 of the use of this feature.
258 Modified bib1.att; local attributes for ANY didn't include
259 ANY itself (only affects use of the retrieval module).
261 Fixed bug in plain SGML reader in function data1_read_node:
262 tags with prefix "var" was incorrectly interpreted as variants.
264 Added feature "sub-schemas" to enable references to - and definitions
265 of - group of elements.
267 * Removed member parent from type data1_element (in data1.h).
269 Implemented function odr_nullval() that returns the value of
272 * Removed member num_children from data1_node (in data1.h).
274 Made NT service interface part of the server library. The
275 function statserv_main uses the NT service when required and
276 calls the statserv_start / statserv_close routines.
278 Routine zget_SearchRequest and zget_PresentRequest fills
279 resultSetName/Id member with "default" instead of "Default".
281 Fixed memory leak in server. Request queue member wasn't freed.
283 Fixed nmem_exit so that memory is freed.
287 Revised the CCL parser utility to be thread safe.
289 Added function, oid_ent_to_oid, to replace the function
290 oid_getoidbyent, which is not thread safe.
292 * Added nmem_init and nmem_exit to initialize and release
293 NMEM resources. Function nmem_init should be called once in the
294 initial thread before NMEM/ODR is used. statserv.c and client.c
295 have been changed accordingly. The change was necessary to make
296 NMEM thread safe. The NMEM memory pool is shared amongst threads
297 in a process. Unix-based applications will still work fine without
300 Added NT Services interface for the the Z39.50 (statserv) Server.
301 Refer to the ztest.c source on the usage.
303 Windows 95/NT port using MSVC5.0. Project files are included in the
306 * Defined new 'global' handle for the retrieval (data1) system. The
307 new handled, data1_handle, describes the state of the data1 system.
308 This handle is passed as first argument to virtually all
309 data1 related routines. The functions data1_create and data1_destroy
310 creates and destroys a data1 handle respectively.
312 Added ODR encode stream member to all backend request structures
313 init, search, scan etc. This stream should be used to allocate all
314 memory used for the response when thread safe operation is needed.
316 Changed the comstack utility, cs_addstr, to be thread safe. The
317 returned hostname string returned by the function is now part the
320 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
321 function. The cs_straddr takes a COMSTACK handle as argument, so this
322 function must be used after cs_create and before bind/connect.
323 This function is thread safe.
325 Moved test server to 'ztest' directory - generic server code still
326 in 'server' directory.
328 Made prefix query (pquery.c) utility thread safe.
330 Added new function modifier YAZ_EXPORT to 'export' public DLL
331 functions when using windows (see include/yconfig.h).
333 Added definitions to the OID database (util/oid.c) (RVDM).
335 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
337 Added call to ccl_rpn_delete in client program.
339 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
340 release of RPN structure.
342 Added support for C++, headers uses extern "C" for public definitions.
343 With input from RVDM.
345 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
346 Thanks to Ronald van der Meer (RVDM).
348 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
350 Added support for private extensions to the OID database
351 (oid_setprivateoids()). Thanks to RVDM.
353 Added optional, physical ANY (key replication)
355 Fixed null-reference problem in GRS-1 output filter.
357 Proximity operator added to Prefix Query Format (PQF).
359 In test client command "base" accepts multiple databases.
361 Fixed bug in cs_close stack that caused trouble with WINSOCK.
365 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
367 Smallish bug-fixes in the new encoders/decoders (explain).
369 Bug fixed in DeleteRequest.
371 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
373 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
375 Added SOIF syntax (using private OID for now) to retrieval module and client.
377 Added Update extended service.
379 Added SearchResult-1 additional info structure.
381 Added optional CCL (ISO8777) interpreter as separate module. Available
384 --- 1.2 1996/6/10 (1st anniversary release)
386 Added Summary record syntax. Lightly tested.
388 Added OPAC record syntax. Untested.
390 Added ResourceReport service encoders/decoders. Untested.
392 Fixed bug in z_Unit - wrong tagging on unitSystem.
394 Fixed bug in the DiagRecs decoder.
396 Added options for max PDU size and session timeout to frontend-server.
398 Added documentation of query-language parsers and other supporting utilities.
400 [frontend-server] Added Attribute set to the bend_scanrequest API.
402 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
403 surrogate diagnostics were generated.
405 [retrieval] Allow multiple local values for attribute.
407 [retrieval] Allow multiple attributes per element in .abs files. index type.
409 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
413 Minor changes, mostly specific to Zebra's requirements (retrieval)
417 Repaired bug in frontend server when running multiple listening
418 endpoints in dynamic mode.
420 z_External() now won't break if a known, ASN.1 value comes encapsulated
421 in an octet-string. The value will pass through unmodified in an Odr_oct.
423 Added a bit of code to the demo client to decode & display
424 ASN.1-structured records represented in the octet-aligned branch of
425 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
427 Added z_ext_getentbyref() to the ASN module. Doc updated.
429 * Completed the SCAN definition in the ASN module. This may break SCAN
430 code based on older YAZ-versions at compile-time. The fix is easy -
433 * Added 'displayTerm' and OtherInformation to the TermInfo structure
434 under the SCAN definition. Remember to initialize this, server-people.
436 Comstack should now support the WAIS protocol in TCP/IP mode. Note
437 that this does not extend to ODR and ASN.
439 Comstack allows insertion of established socket (primarily for
440 inetd-operation of servers). Doc updated.
442 Front-end server can now start from the inetd in TCP mode. Doc
449 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
450 the rank and record number.
452 Adjustments to the frontend server.
454 Fixed diagnostic BER dumper. It ignored the file argument.
458 Various changes to retrieval module.
460 Changed the union discriminators of the protocol files from enums to
461 ints paired with #defines.
463 *Changed oident.class to oident.oclass to avoid a reserved word in C++
466 *Changed operator in the RPN structure to 'roperator', again to avoid a
469 Fixed problems in Explain decoders/encoders.
473 Memory bug in log module fixed.
477 Occasional malloc() of 0 bytes fixed in d1_espec.c.
479 Bug in Explain DatabaseInfo module fixed.
481 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
485 The shift to v1.0 signals that we now consider the *core* functionality
486 of YAZ reasonably stable (the core being more or less equivalent to
487 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
488 tested (Explain not at all - though that will happen soonish).
490 Minor changes to code to support Windows port.
492 Various minor changes after we're getting to use GRS-1 & co. more.
494 Added Espec-1 format.
496 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
497 of the protocol and it cannot be selected when encoding (maps into 'string'
498 when decoding). Needed to talk to some servers.
500 Demo client can request simple element set names.
502 Added Diagnostic Format encoders/decoders.
504 Added simple Close handling to frontend server (no hooks for resource
505 reporting yet), and demonstration client.
507 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
511 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
512 handled incorrectly when records were requested in the searchResponse. This
513 will only affect you if you use the frontend-server.
515 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
516 Test-client will ask for and print GRS1. Ztest will return dummy records
519 Added Explain encoders/decoders to the service-level API. Untested.
521 Added Extended Services: Item Order encoders and decoders to the Service-
522 level API. Untested. We could use a recent copy of the pertinent bits
523 of the ILL protocol to add those bits.
525 Added diagnostic format 1 encoders/decoders to the service-level API.
528 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
529 odr_cons.c, which causes a more correct output.
531 Fixed handling of searchRequest in frontend server. NextResultSetPosition
532 was always set to 0 when no records were requested in the searchRequest.
534 * Added better external-handling. This shouldn't harm old code that
535 *encodes* externals. It can break code that looks for a
536 'single-ASN1-type' representation, since those types that are known
537 are now decoded immediately. Look at the SUTRS sample code in
538 seshigh.c and client.c. Documentation updated.
540 Handling of structured records in bend_fetchresponse. Length -1 marks
541 structured record, type is deduced from format field.
544 Fairly quick maintenance release to add SUTRS support.
546 Fixed handling of SUTRS records in the demonstration client.
548 * Added format field to the bend_fetchrequest and bend_fetchresponce
549 structures of the backend API (frontend server). When the record is
550 returned, the value of the format field is mapped to an OID. The
551 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
552 of the record. The special value VAL_NONE in the bend_request means
553 that no specific format was requested by the client. Documentation
554 updated accordingly. Test server (ztest) will return a fixed dummy
555 SUTRS record if your client requests SUTRS.
557 Documentation updated accordingly.
559 You can now set external libraries and RANLIB support in the top-level
563 First public release.