1 Possible compatibility problems with earlier versions marked with '*'.
3 Config file yaz-config now accepts options so that it returns specific
4 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
6 Shared library support for UNIX using GNU libtool.
8 * Modified backend interface. Request/Response struct's replaced by
9 one read/write C struct. For example bend_fetchrequest and
10 bend_fetchresult have been replaced by single bend_fetch_rr struct.
11 Every handler - even search has to be registered in bend_init
12 handler. This means that the YAZ library no longer refers to
13 external functions and it makes it possible to make the whole
14 thing a single DLL/SO.
16 Added Segment handler for backend server.
18 Added Zmbol/Zebra administrative functions to YAZ client.
20 Threaded frontend server on UNIX (when POSIX Threads are available).
21 Starting the server with option -T enables multi-threading.
25 Added configure option --enable-comp/disable-comp to control use
26 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
27 located in sub directory asn.
29 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
30 in ${exec_prefix}/bin along with the other programs yaz-client and
33 GNU automake used to maintain makefiles.
37 Changed retrieval module so that we can load records with no abstract
38 syntax defined. Tagpaths in these records are fully composed of string
41 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
45 On UNIX, the generated makefile now supports a proper 'make install'.
46 The prefix can be set via GNU configure to set the install location
47 (default is /usr/local).
49 * YAZ programs client and ztest were renamed to yaz-client and
50 yaz-ztest to avoid conflicts when users install YAZ in "standard"
51 locations, such as /usr/bin,/usr/local/bin,etc.
53 * YAZ Header files were moved from include to include/yaz. YAZ Header
54 files are referred to as include <yaz/log.h> rather than <log.h>.
55 The YAZ include path (-I ..) is therefore the same as before. Programmers
56 should update their #include statements or use -Ipath/include/yaz
57 instead. The main motivation for doing this change is that YAZ header files
58 can be installed in "standard" locations /usr/include,/usr/local/include
59 without introducing conflicts, since ALL YAZ header files are stored
60 in subdirectory yaz (under /usr/include for example).
62 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
63 rather than project/workspace files. We switched because project files
64 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
67 Changed name of logging function, logf, to yaz_log, to prevent name
68 clash with some math-log functions. The YAZ header log.h defines logf
69 to yaz_log (#define) so there should be no incompatibilities by this
72 Added bend_start/bend_stop handlers for server. These handler are
73 called on start/stop of server. For windows they are called whenever
74 a service is started/stopped.
76 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
77 a fairly small ASN.1 compiler written in Tcl. The compiler is located
78 in util/yc.tcl. The auto-generated C code structures are, in a few
79 cases, incompatible with the old decoders. There are differences in the
80 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
81 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
82 The preprocessor variable ASN_COMPILED is defined when the compiled
83 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
84 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
85 wish to use the old encoders/decoders you can specify --disable-yc
88 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
89 version so that it supports both new - and old version of DB Update
91 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
92 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
93 change. The name parameter can be set to 0 in which no name is specified
94 for the construction. The macros odr_implicit and odr_explicit sets name
95 parameter to zero for the construction involved. New macros
96 odr_implicit_tag and odr_explicit_tag are similar to the others,
97 except that a name parameter is added. For programmers' that don't use
98 ODR they probably only need to change the call to z_APDU and z_External.
100 Added access control facility by interfacing the TCP wrapper library.
101 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
102 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
103 name of the daemon and enables the access control as specified in
104 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
106 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
107 den Dool <H.M.vdnDool@kub.nl>.
109 Added reference ID parameter to most functions in server API - refer
110 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
112 Changed name of ccl library to libccl.a (was ccl.a).
114 Fixed bug in decoder for Explain (Category TargetInfo).
116 Added support for GNU readline in client. Thanks to Jacob Poulsen
117 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
119 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
120 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
121 IMPLEMENTATION! This change was made to the development version before
122 the ZIG decided to retract the amendment. If any users MUST be
123 compatible with the original Update definition, PLEASE CONTACT US, and
124 we will include a separate definition corresponding to the old Update
125 ES. Note that because of the change to the ASN.1 of the
126 TaskPackageRecordStructure we cannot define a single structure that
127 will support both versions.
129 * Added const modifier to buffer parameter for some ODR/BER encoding
130 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
131 completeWAIS, odr_dumpBER.
133 Fixed bug in client.c which caused a crash when a scanResponse didn't
134 contain positionOfTerm.
136 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
137 * will cause an error in a client if a non-YAZ target sends both a
138 * list of Scan entries and non-surrogate diagnostics.
140 Retrieval module enhancements. Tag sets may be typed in the reference
141 to it. From the .abs-file the "tagset" directive takes a third optional
142 integer type for the tag set referenced. From a .tag-file the "include"
143 directive takes a third optional type as well. The old "type" directive
144 in the tag set itself is still recognized but acts as the default type
147 Backend interface change. Individual Scan terms returned from bend_scan
148 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
149 in include/backend.h.
151 Retrieval module enhancements. Multiple tag sets and attribute sets may
152 be specified in abstract syntax specs. Revised the error/warning for
153 logging messages reported by the retrieval module when reading the
156 Object Identifier system (oid_..) changed. The API is backwards
157 compatible but the oid-routines now allocates new OID's when needed.
158 Raw OID's may be specified in oid_getvalbyname.
160 YAZ now uses GNU configure to generate Makefile(s).
162 * Minor changes in some of the member names of DeleteResultSetRequest and
163 DeleteResultSetResponse. See include/proto.h.
165 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
166 and added member 'languages' in TargetInfo (which was missing).
168 Changed the way attribute sets are handled in the retrieval
169 module. These are now cached, just like the abstract syntaxes
172 Changed YAZ so that it links with compiled ASN.1.
174 Added Explain-schema definitions and mapping routines. The following
175 Explain categories have been implemented: AttributeDetails,
176 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
178 Fixed minor bug in Windows version of Server Library.
180 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
182 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
184 Added EXTERNAL: UNIverse Resource Report (non-standard).
186 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
187 ENUMERATED and SET OF.
189 * Added 'const' to some of the char pointer arguments for the
190 functions, data1_read_node, data1_getelementbytagname,
191 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
194 Fixed bug in data1_insert_taggeddata - the last_child member of
195 parent wasn't initialised.
197 * Changed data1_read_record and data1_read_node so that the supplied
198 "SGML"-buffer is read-only. In particular the resulting data1 - tree
199 doesn't refer to any parts of the "SGML"-buffer.
201 Fixed bug in server library (Windows version of statserv_remove).
203 * Changed code so that it compiles as C++. The type definition
204 of Odr_fun which is a member of Odr_arm was changed. The result is,
205 that an explicit typecast is needed for the fun pointer when
206 using Odr_arm - as in:
207 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
209 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
211 Implemented the new structured date and time definition as approved
212 by the ZIG. Added schemaId element to the specificTag in Espec-1
213 (also approved at the last ZIG). Thanks to RVDM.
215 Added some Object identifiers (RVDM).
217 Changed the Update Extended Service (RVDM).
219 Added command "refid" to client which specifies referenceId for
220 the following requests.
222 Implemented extended service handling for server. See ztest.c
223 for an example as well as backend.h. New handlers are registerd
226 * Changed interface for sort in server.
228 Added new members to statserv_options_block. It allows a server
229 to read options from another source than just the command line. Thanks
230 to Charles Woodfield.
232 * Changed definition of Z_Triple in file prt-grs.h - member boolean
233 renamed to zboolean. Some C++ compilers complained about the name.
235 Minor changes to gils.abs. Added index 's' (sort) on title
236 and date/time-last-modified.
240 Fixed bug in server library regarding inetd mode (-i). This bug
241 was introduced by release 1.4.
245 Added sort facility in client and backend server interface.
247 Fixed problem with dependencies in Makefile(s).
249 Fixed bugs for encoders/decoders of extended services and
252 Implemented sub-tree feature for schemas. Sub-trees are
253 referenced in *.abs-files. See explain.abs for an example
254 of the use of this feature.
256 Modified bib1.att; local attributes for ANY didn't include
257 ANY itself (only affects use of the retrieval module).
259 Fixed bug in plain SGML reader in function data1_read_node:
260 tags with prefix "var" was incorrectly interpreted as variants.
262 Added feature "sub-schemas" to enable references to - and definitions
263 of - group of elements.
265 * Removed member parent from type data1_element (in data1.h).
267 Implemented function odr_nullval() that returns the value of
270 * Removed member num_children from data1_node (in data1.h).
272 Made NT service interface part of the server library. The
273 function statserv_main uses the NT service when required and
274 calls the statserv_start / statserv_close routines.
276 Routine zget_SearchRequest and zget_PresentRequest fills
277 resultSetName/Id member with "default" instead of "Default".
279 Fixed memory leak in server. Request queue member wasn't freed.
281 Fixed nmem_exit so that memory is freed.
285 Revised the CCL parser utility to be thread safe.
287 Added function, oid_ent_to_oid, to replace the function
288 oid_getoidbyent, which is not thread safe.
290 * Added nmem_init and nmem_exit to initialize and release
291 NMEM resources. Function nmem_init should be called once in the
292 initial thread before NMEM/ODR is used. statserv.c and client.c
293 have been changed accordingly. The change was necessary to make
294 NMEM thread safe. The NMEM memory pool is shared amongst threads
295 in a process. Unix-based applications will still work fine without
298 Added NT Services interface for the the Z39.50 (statserv) Server.
299 Refer to the ztest.c source on the usage.
301 Windows 95/NT port using MSVC5.0. Project files are included in the
304 * Defined new 'global' handle for the retrieval (data1) system. The
305 new handled, data1_handle, describes the state of the data1 system.
306 This handle is passed as first argument to virtually all
307 data1 related routines. The functions data1_create and data1_destroy
308 creates and destroys a data1 handle respectively.
310 Added ODR encode stream member to all backend request structures
311 init, search, scan etc. This stream should be used to allocate all
312 memory used for the response when thread safe operation is needed.
314 Changed the comstack utility, cs_addstr, to be thread safe. The
315 returned hostname string returned by the function is now part the
318 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
319 function. The cs_straddr takes a COMSTACK handle as argument, so this
320 function must be used after cs_create and before bind/connect.
321 This function is thread safe.
323 Moved test server to 'ztest' directory - generic server code still
324 in 'server' directory.
326 Made prefix query (pquery.c) utility thread safe.
328 Added new function modifier YAZ_EXPORT to 'export' public DLL
329 functions when using windows (see include/yconfig.h).
331 Added definitions to the OID database (util/oid.c) (RVDM).
333 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
335 Added call to ccl_rpn_delete in client program.
337 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
338 release of RPN structure.
340 Added support for C++, headers uses extern "C" for public definitions.
341 With input from RVDM.
343 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
344 Thanks to Ronald van der Meer (RVDM).
346 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
348 Added support for private extensions to the OID database
349 (oid_setprivateoids()). Thanks to RVDM.
351 Added optional, physical ANY (key replication)
353 Fixed null-reference problem in GRS-1 output filter.
355 Proximity operator added to Prefix Query Format (PQF).
357 In test client command "base" accepts multiple databases.
359 Fixed bug in cs_close stack that caused trouble with WINSOCK.
363 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
365 Smallish bug-fixes in the new encoders/decoders (explain).
367 Bug fixed in DeleteRequest.
369 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
371 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
373 Added SOIF syntax (using private OID for now) to retrieval module and client.
375 Added Update extended service.
377 Added SearchResult-1 additional info structure.
379 Added optional CCL (ISO8777) interpreter as separate module. Available
382 --- 1.2 1996/6/10 (1st anniversary release)
384 Added Summary record syntax. Lightly tested.
386 Added OPAC record syntax. Untested.
388 Added ResourceReport service encoders/decoders. Untested.
390 Fixed bug in z_Unit - wrong tagging on unitSystem.
392 Fixed bug in the DiagRecs decoder.
394 Added options for max PDU size and session timeout to frontend-server.
396 Added documentation of query-language parsers and other supporting utilities.
398 [frontend-server] Added Attribute set to the bend_scanrequest API.
400 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
401 surrogate diagnostics were generated.
403 [retrieval] Allow multiple local values for attribute.
405 [retrieval] Allow multiple attributes per element in .abs files. index type.
407 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
411 Minor changes, mostly specific to Zebra's requirements (retrieval)
415 Repaired bug in frontend server when running multiple listening
416 endpoints in dynamic mode.
418 z_External() now won't break if a known, ASN.1 value comes encapsulated
419 in an octet-string. The value will pass through unmodified in an Odr_oct.
421 Added a bit of code to the demo client to decode & display
422 ASN.1-structured records represented in the octet-aligned branch of
423 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
425 Added z_ext_getentbyref() to the ASN module. Doc updated.
427 * Completed the SCAN definition in the ASN module. This may break SCAN
428 code based on older YAZ-versions at compile-time. The fix is easy -
431 * Added 'displayTerm' and OtherInformation to the TermInfo structure
432 under the SCAN definition. Remember to initialize this, server-people.
434 Comstack should now support the WAIS protocol in TCP/IP mode. Note
435 that this does not extend to ODR and ASN.
437 Comstack allows insertion of established socket (primarily for
438 inetd-operation of servers). Doc updated.
440 Front-end server can now start from the inetd in TCP mode. Doc
447 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
448 the rank and record number.
450 Adjustments to the frontend server.
452 Fixed diagnostic BER dumper. It ignored the file argument.
456 Various changes to retrieval module.
458 Changed the union discriminators of the protocol files from enums to
459 ints paired with #defines.
461 *Changed oident.class to oident.oclass to avoid a reserved word in C++
464 *Changed operator in the RPN structure to 'roperator', again to avoid a
467 Fixed problems in Explain decoders/encoders.
471 Memory bug in log module fixed.
475 Occasional malloc() of 0 bytes fixed in d1_espec.c.
477 Bug in Explain DatabaseInfo module fixed.
479 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
483 The shift to v1.0 signals that we now consider the *core* functionality
484 of YAZ reasonably stable (the core being more or less equivalent to
485 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
486 tested (Explain not at all - though that will happen soonish).
488 Minor changes to code to support Windows port.
490 Various minor changes after we're getting to use GRS-1 & co. more.
492 Added Espec-1 format.
494 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
495 of the protocol and it cannot be selected when encoding (maps into 'string'
496 when decoding). Needed to talk to some servers.
498 Demo client can request simple element set names.
500 Added Diagnostic Format encoders/decoders.
502 Added simple Close handling to frontend server (no hooks for resource
503 reporting yet), and demonstration client.
505 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
509 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
510 handled incorrectly when records were requested in the searchResponse. This
511 will only affect you if you use the frontend-server.
513 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
514 Test-client will ask for and print GRS1. Ztest will return dummy records
517 Added Explain encoders/decoders to the service-level API. Untested.
519 Added Extended Services: Item Order encoders and decoders to the Service-
520 level API. Untested. We could use a recent copy of the pertinent bits
521 of the ILL protocol to add those bits.
523 Added diagnostic format 1 encoders/decoders to the service-level API.
526 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
527 odr_cons.c, which causes a more correct output.
529 Fixed handling of searchRequest in frontend server. NextResultSetPosition
530 was always set to 0 when no records were requested in the searchRequest.
532 * Added better external-handling. This shouldn't harm old code that
533 *encodes* externals. It can break code that looks for a
534 'single-ASN1-type' representation, since those types that are known
535 are now decoded immediately. Look at the SUTRS sample code in
536 seshigh.c and client.c. Documentation updated.
538 Handling of structured records in bend_fetchresponse. Length -1 marks
539 structured record, type is deduced from format field.
542 Fairly quick maintenance release to add SUTRS support.
544 Fixed handling of SUTRS records in the demonstration client.
546 * Added format field to the bend_fetchrequest and bend_fetchresponce
547 structures of the backend API (frontend server). When the record is
548 returned, the value of the format field is mapped to an OID. The
549 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
550 of the record. The special value VAL_NONE in the bend_request means
551 that no specific format was requested by the client. Documentation
552 updated accordingly. Test server (ztest) will return a fixed dummy
553 SUTRS record if your client requests SUTRS.
555 Documentation updated accordingly.
557 You can now set external libraries and RANLIB support in the top-level
561 First public release.