1 Possible compatibility problems with earlier versions marked with '*'.
3 Fixed problem with GNU readline detection on Redhat 7.0.
5 Added step-size for Scan backend handler.
7 Fixed bug that made the frontend server crash when no attribute
8 set was specified for scan.
10 Front-end server automatically switches to original working directory
11 when installed as an NT service. Previously -w had to be specified to
14 Added extended attributes for retrieval module (data1), so that data1
15 records carry d1_readXML/SGML attributes. d1_read also supports
16 null-data rules ( <tag/>)
18 On UNIX when POSIX threads are available, a separate library libyazthread
19 is created. Programmers should link with that library and the yaz library
20 when using threads. The reason for the split was that some applications
21 on Linux, such as Apache, doesn't work well when using shared objects that
24 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
25 (or any frontend server) in SSL mode by specifying ssl: followed by
26 address. Only tested on UNIX.
28 Added feature for CCL module. Virtual structure s=al or s=ol generates
29 and-list and or-list respectively instead of phrase search.
33 * Added prefix "yaz_" for the functions log_init.., log_file.. and
34 log_mask_str. This was done to avoid name conflicts with other libraries
35 (such as other PHP extensions).
37 Added raw OID member for preferred record syntax (request_format_raw)
38 and returned record syntax (output_format_raw) for backend fetch method.
40 Config file yaz-config now accepts options so that it returns specific
41 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
43 Shared library support for UNIX using GNU libtool.
45 * Modified backend interface. Request/Response struct's replaced by
46 one read/write C struct. For example bend_fetchrequest and
47 bend_fetchresult have been replaced by single bend_fetch_rr struct.
48 Every handler - even search has to be registered in bend_init
49 handler. This means that the YAZ library no longer refers to
50 external functions and it makes it possible to make the whole
51 thing a single DLL/SO.
53 Added Segment handler for backend server.
55 Added Zmbol/Zebra administrative functions to YAZ client.
57 Threaded frontend server on UNIX (when POSIX Threads are available).
58 Starting the server with option -T enables multi-threading.
62 Added configure option --enable-comp/disable-comp to control use
63 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
64 located in sub directory asn.
66 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
67 in ${exec_prefix}/bin along with the other programs yaz-client and
70 GNU automake used to maintain makefiles.
74 Changed retrieval module so that we can load records with no abstract
75 syntax defined. Tagpaths in these records are fully composed of string
78 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
82 On UNIX, the generated makefile now supports a proper 'make install'.
83 The prefix can be set via GNU configure to set the install location
84 (default is /usr/local).
86 * YAZ programs client and ztest were renamed to yaz-client and
87 yaz-ztest to avoid conflicts when users install YAZ in "standard"
88 locations, such as /usr/bin,/usr/local/bin,etc.
90 * YAZ Header files were moved from include to include/yaz. YAZ Header
91 files are referred to as include <yaz/log.h> rather than <log.h>.
92 The YAZ include path (-I ..) is therefore the same as before. Programmers
93 should update their #include statements or use -Ipath/include/yaz
94 instead. The main motivation for doing this change is that YAZ header files
95 can be installed in "standard" locations /usr/include,/usr/local/include
96 without introducing conflicts, since ALL YAZ header files are stored
97 in subdirectory yaz (under /usr/include for example).
99 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
100 rather than project/workspace files. We switched because project files
101 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
104 Changed name of logging function, logf, to yaz_log, to prevent name
105 clash with some math-log functions. The YAZ header log.h defines logf
106 to yaz_log (#define) so there should be no incompatibilities by this
109 Added bend_start/bend_stop handlers for server. These handler are
110 called on start/stop of server. For windows they are called whenever
111 a service is started/stopped.
113 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
114 a fairly small ASN.1 compiler written in Tcl. The compiler is located
115 in util/yc.tcl. The auto-generated C code structures are, in a few
116 cases, incompatible with the old decoders. There are differences in the
117 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
118 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
119 The preprocessor variable ASN_COMPILED is defined when the compiled
120 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
121 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
122 wish to use the old encoders/decoders you can specify --disable-yc
125 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
126 version so that it supports both new - and old version of DB Update
128 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
129 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
130 change. The name parameter can be set to 0 in which no name is specified
131 for the construction. The macros odr_implicit and odr_explicit sets name
132 parameter to zero for the construction involved. New macros
133 odr_implicit_tag and odr_explicit_tag are similar to the others,
134 except that a name parameter is added. For programmers' that don't use
135 ODR they probably only need to change the call to z_APDU and z_External.
137 Added access control facility by interfacing the TCP wrapper library.
138 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
139 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
140 name of the daemon and enables the access control as specified in
141 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
143 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
144 den Dool <H.M.vdnDool@kub.nl>.
146 Added reference ID parameter to most functions in server API - refer
147 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
149 Changed name of ccl library to libccl.a (was ccl.a).
151 Fixed bug in decoder for Explain (Category TargetInfo).
153 Added support for GNU readline in client. Thanks to Jacob Poulsen
154 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
156 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
157 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
158 IMPLEMENTATION! This change was made to the development version before
159 the ZIG decided to retract the amendment. If any users MUST be
160 compatible with the original Update definition, PLEASE CONTACT US, and
161 we will include a separate definition corresponding to the old Update
162 ES. Note that because of the change to the ASN.1 of the
163 TaskPackageRecordStructure we cannot define a single structure that
164 will support both versions.
166 * Added const modifier to buffer parameter for some ODR/BER encoding
167 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
168 completeWAIS, odr_dumpBER.
170 Fixed bug in client.c which caused a crash when a scanResponse didn't
171 contain positionOfTerm.
173 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
174 * will cause an error in a client if a non-YAZ target sends both a
175 * list of Scan entries and non-surrogate diagnostics.
177 Retrieval module enhancements. Tag sets may be typed in the reference
178 to it. From the .abs-file the "tagset" directive takes a third optional
179 integer type for the tag set referenced. From a .tag-file the "include"
180 directive takes a third optional type as well. The old "type" directive
181 in the tag set itself is still recognized but acts as the default type
184 Backend interface change. Individual Scan terms returned from bend_scan
185 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
186 in include/backend.h.
188 Retrieval module enhancements. Multiple tag sets and attribute sets may
189 be specified in abstract syntax specs. Revised the error/warning for
190 logging messages reported by the retrieval module when reading the
193 Object Identifier system (oid_..) changed. The API is backwards
194 compatible but the oid-routines now allocates new OID's when needed.
195 Raw OID's may be specified in oid_getvalbyname.
197 YAZ now uses GNU configure to generate Makefile(s).
199 * Minor changes in some of the member names of DeleteResultSetRequest and
200 DeleteResultSetResponse. See include/proto.h.
202 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
203 and added member 'languages' in TargetInfo (which was missing).
205 Changed the way attribute sets are handled in the retrieval
206 module. These are now cached, just like the abstract syntaxes
209 Changed YAZ so that it links with compiled ASN.1.
211 Added Explain-schema definitions and mapping routines. The following
212 Explain categories have been implemented: AttributeDetails,
213 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
215 Fixed minor bug in Windows version of Server Library.
217 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
219 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
221 Added EXTERNAL: UNIverse Resource Report (non-standard).
223 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
224 ENUMERATED and SET OF.
226 * Added 'const' to some of the char pointer arguments for the
227 functions, data1_read_node, data1_getelementbytagname,
228 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
231 Fixed bug in data1_insert_taggeddata - the last_child member of
232 parent wasn't initialised.
234 * Changed data1_read_record and data1_read_node so that the supplied
235 "SGML"-buffer is read-only. In particular the resulting data1 - tree
236 doesn't refer to any parts of the "SGML"-buffer.
238 Fixed bug in server library (Windows version of statserv_remove).
240 * Changed code so that it compiles as C++. The type definition
241 of Odr_fun which is a member of Odr_arm was changed. The result is,
242 that an explicit typecast is needed for the fun pointer when
243 using Odr_arm - as in:
244 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
246 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
248 Implemented the new structured date and time definition as approved
249 by the ZIG. Added schemaId element to the specificTag in Espec-1
250 (also approved at the last ZIG). Thanks to RVDM.
252 Added some Object identifiers (RVDM).
254 Changed the Update Extended Service (RVDM).
256 Added command "refid" to client which specifies referenceId for
257 the following requests.
259 Implemented extended service handling for server. See ztest.c
260 for an example as well as backend.h. New handlers are registerd
263 * Changed interface for sort in server.
265 Added new members to statserv_options_block. It allows a server
266 to read options from another source than just the command line. Thanks
267 to Charles Woodfield.
269 * Changed definition of Z_Triple in file prt-grs.h - member boolean
270 renamed to zboolean. Some C++ compilers complained about the name.
272 Minor changes to gils.abs. Added index 's' (sort) on title
273 and date/time-last-modified.
277 Fixed bug in server library regarding inetd mode (-i). This bug
278 was introduced by release 1.4.
282 Added sort facility in client and backend server interface.
284 Fixed problem with dependencies in Makefile(s).
286 Fixed bugs for encoders/decoders of extended services and
289 Implemented sub-tree feature for schemas. Sub-trees are
290 referenced in *.abs-files. See explain.abs for an example
291 of the use of this feature.
293 Modified bib1.att; local attributes for ANY didn't include
294 ANY itself (only affects use of the retrieval module).
296 Fixed bug in plain SGML reader in function data1_read_node:
297 tags with prefix "var" was incorrectly interpreted as variants.
299 Added feature "sub-schemas" to enable references to - and definitions
300 of - group of elements.
302 * Removed member parent from type data1_element (in data1.h).
304 Implemented function odr_nullval() that returns the value of
307 * Removed member num_children from data1_node (in data1.h).
309 Made NT service interface part of the server library. The
310 function statserv_main uses the NT service when required and
311 calls the statserv_start / statserv_close routines.
313 Routine zget_SearchRequest and zget_PresentRequest fills
314 resultSetName/Id member with "default" instead of "Default".
316 Fixed memory leak in server. Request queue member wasn't freed.
318 Fixed nmem_exit so that memory is freed.
322 Revised the CCL parser utility to be thread safe.
324 Added function, oid_ent_to_oid, to replace the function
325 oid_getoidbyent, which is not thread safe.
327 * Added nmem_init and nmem_exit to initialize and release
328 NMEM resources. Function nmem_init should be called once in the
329 initial thread before NMEM/ODR is used. statserv.c and client.c
330 have been changed accordingly. The change was necessary to make
331 NMEM thread safe. The NMEM memory pool is shared amongst threads
332 in a process. Unix-based applications will still work fine without
335 Added NT Services interface for the the Z39.50 (statserv) Server.
336 Refer to the ztest.c source on the usage.
338 Windows 95/NT port using MSVC5.0. Project files are included in the
341 * Defined new 'global' handle for the retrieval (data1) system. The
342 new handled, data1_handle, describes the state of the data1 system.
343 This handle is passed as first argument to virtually all
344 data1 related routines. The functions data1_create and data1_destroy
345 creates and destroys a data1 handle respectively.
347 Added ODR encode stream member to all backend request structures
348 init, search, scan etc. This stream should be used to allocate all
349 memory used for the response when thread safe operation is needed.
351 Changed the comstack utility, cs_addstr, to be thread safe. The
352 returned hostname string returned by the function is now part the
355 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
356 function. The cs_straddr takes a COMSTACK handle as argument, so this
357 function must be used after cs_create and before bind/connect.
358 This function is thread safe.
360 Moved test server to 'ztest' directory - generic server code still
361 in 'server' directory.
363 Made prefix query (pquery.c) utility thread safe.
365 Added new function modifier YAZ_EXPORT to 'export' public DLL
366 functions when using windows (see include/yconfig.h).
368 Added definitions to the OID database (util/oid.c) (RVDM).
370 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
372 Added call to ccl_rpn_delete in client program.
374 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
375 release of RPN structure.
377 Added support for C++, headers uses extern "C" for public definitions.
378 With input from RVDM.
380 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
381 Thanks to Ronald van der Meer (RVDM).
383 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
385 Added support for private extensions to the OID database
386 (oid_setprivateoids()). Thanks to RVDM.
388 Added optional, physical ANY (key replication)
390 Fixed null-reference problem in GRS-1 output filter.
392 Proximity operator added to Prefix Query Format (PQF).
394 In test client command "base" accepts multiple databases.
396 Fixed bug in cs_close stack that caused trouble with WINSOCK.
400 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
402 Smallish bug-fixes in the new encoders/decoders (explain).
404 Bug fixed in DeleteRequest.
406 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
408 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
410 Added SOIF syntax (using private OID for now) to retrieval module and client.
412 Added Update extended service.
414 Added SearchResult-1 additional info structure.
416 Added optional CCL (ISO8777) interpreter as separate module. Available
419 --- 1.2 1996/6/10 (1st anniversary release)
421 Added Summary record syntax. Lightly tested.
423 Added OPAC record syntax. Untested.
425 Added ResourceReport service encoders/decoders. Untested.
427 Fixed bug in z_Unit - wrong tagging on unitSystem.
429 Fixed bug in the DiagRecs decoder.
431 Added options for max PDU size and session timeout to frontend-server.
433 Added documentation of query-language parsers and other supporting utilities.
435 [frontend-server] Added Attribute set to the bend_scanrequest API.
437 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
438 surrogate diagnostics were generated.
440 [retrieval] Allow multiple local values for attribute.
442 [retrieval] Allow multiple attributes per element in .abs files. index type.
444 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
448 Minor changes, mostly specific to Zebra's requirements (retrieval)
452 Repaired bug in frontend server when running multiple listening
453 endpoints in dynamic mode.
455 z_External() now won't break if a known, ASN.1 value comes encapsulated
456 in an octet-string. The value will pass through unmodified in an Odr_oct.
458 Added a bit of code to the demo client to decode & display
459 ASN.1-structured records represented in the octet-aligned branch of
460 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
462 Added z_ext_getentbyref() to the ASN module. Doc updated.
464 * Completed the SCAN definition in the ASN module. This may break SCAN
465 code based on older YAZ-versions at compile-time. The fix is easy -
468 * Added 'displayTerm' and OtherInformation to the TermInfo structure
469 under the SCAN definition. Remember to initialize this, server-people.
471 Comstack should now support the WAIS protocol in TCP/IP mode. Note
472 that this does not extend to ODR and ASN.
474 Comstack allows insertion of established socket (primarily for
475 inetd-operation of servers). Doc updated.
477 Front-end server can now start from the inetd in TCP mode. Doc
484 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
485 the rank and record number.
487 Adjustments to the frontend server.
489 Fixed diagnostic BER dumper. It ignored the file argument.
493 Various changes to retrieval module.
495 Changed the union discriminators of the protocol files from enums to
496 ints paired with #defines.
498 *Changed oident.class to oident.oclass to avoid a reserved word in C++
501 *Changed operator in the RPN structure to 'roperator', again to avoid a
504 Fixed problems in Explain decoders/encoders.
508 Memory bug in log module fixed.
512 Occasional malloc() of 0 bytes fixed in d1_espec.c.
514 Bug in Explain DatabaseInfo module fixed.
516 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
520 The shift to v1.0 signals that we now consider the *core* functionality
521 of YAZ reasonably stable (the core being more or less equivalent to
522 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
523 tested (Explain not at all - though that will happen soonish).
525 Minor changes to code to support Windows port.
527 Various minor changes after we're getting to use GRS-1 & co. more.
529 Added Espec-1 format.
531 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
532 of the protocol and it cannot be selected when encoding (maps into 'string'
533 when decoding). Needed to talk to some servers.
535 Demo client can request simple element set names.
537 Added Diagnostic Format encoders/decoders.
539 Added simple Close handling to frontend server (no hooks for resource
540 reporting yet), and demonstration client.
542 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
546 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
547 handled incorrectly when records were requested in the searchResponse. This
548 will only affect you if you use the frontend-server.
550 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
551 Test-client will ask for and print GRS1. Ztest will return dummy records
554 Added Explain encoders/decoders to the service-level API. Untested.
556 Added Extended Services: Item Order encoders and decoders to the Service-
557 level API. Untested. We could use a recent copy of the pertinent bits
558 of the ILL protocol to add those bits.
560 Added diagnostic format 1 encoders/decoders to the service-level API.
563 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
564 odr_cons.c, which causes a more correct output.
566 Fixed handling of searchRequest in frontend server. NextResultSetPosition
567 was always set to 0 when no records were requested in the searchRequest.
569 * Added better external-handling. This shouldn't harm old code that
570 *encodes* externals. It can break code that looks for a
571 'single-ASN1-type' representation, since those types that are known
572 are now decoded immediately. Look at the SUTRS sample code in
573 seshigh.c and client.c. Documentation updated.
575 Handling of structured records in bend_fetchresponse. Length -1 marks
576 structured record, type is deduced from format field.
579 Fairly quick maintenance release to add SUTRS support.
581 Fixed handling of SUTRS records in the demonstration client.
583 * Added format field to the bend_fetchrequest and bend_fetchresponce
584 structures of the backend API (frontend server). When the record is
585 returned, the value of the format field is mapped to an OID. The
586 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
587 of the record. The special value VAL_NONE in the bend_request means
588 that no specific format was requested by the client. Documentation
589 updated accordingly. Test server (ztest) will return a fixed dummy
590 SUTRS record if your client requests SUTRS.
592 Documentation updated accordingly.
594 You can now set external libraries and RANLIB support in the top-level
598 First public release.