1 Possible compatibility problems with earlier versions marked with '*'.
3 Implemented cs_look and proper cs_rcvconnect.
5 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
7 Configure detects POSIX threads on OpenBSD.
9 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
10 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
12 When error is returned from present handler, non-surrogate diagnostic
13 is returned in present response (and fetch handler is no longer called).
15 * Minor adjustments to pquery parser (PQF). Token characters may be
16 escaped by using backslash (C-style).
18 PQF parser allows string attribute values to be specified. For @attr,
19 non-numeric characters after the equal-sign are treated as strings
22 CCL trunction character may be defined (@truncation in file)
24 * function zget_ExtendedServicesRequest sets waitAction to
25 waitIfPossible (was wait).
27 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
30 CCL operator names may be set in field definition files (CCL_bibset).
31 See ccl/bib1 for an example.
33 Fixes in ASN.1 compiler for C++ compatibility.
35 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
36 and "op_or" to avoid conflict with C++.
38 Fixed problem with GNU readline detection on Redhat 7.0.
40 Added step-size for Scan backend handler.
42 Fixed bug that made the frontend server crash when no attribute
43 set was specified for scan.
45 Front-end server automatically switches to original working directory
46 when installed as an NT service. Previously -w had to be specified to
49 Added extended attributes for retrieval module (data1), so that data1
50 records carry d1_readXML/SGML attributes. d1_read also supports
51 null-data rules ( <tag/>)
53 On UNIX when POSIX threads are available, a separate library libyazthread
54 is created. Programmers should link with that library and the yaz library
55 when using threads. The reason for the split was that some applications
56 on Linux, such as Apache, doesn't work well when using shared objects that
59 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
60 (or any frontend server) in SSL mode by specifying ssl: followed by
61 address. Only tested on UNIX.
63 Added feature for CCL module. Virtual structure s=al or s=ol generates
64 and-list and or-list respectively instead of phrase search.
68 * Added prefix "yaz_" for the functions log_init.., log_file.. and
69 log_mask_str. This was done to avoid name conflicts with other libraries
70 (such as other PHP extensions).
72 Added raw OID member for preferred record syntax (request_format_raw)
73 and returned record syntax (output_format_raw) for backend fetch method.
75 Config file yaz-config now accepts options so that it returns specific
76 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
78 Shared library support for UNIX using GNU libtool.
80 * Modified backend interface. Request/Response struct's replaced by
81 one read/write C struct. For example bend_fetchrequest and
82 bend_fetchresult have been replaced by single bend_fetch_rr struct.
83 Every handler - even search has to be registered in bend_init
84 handler. This means that the YAZ library no longer refers to
85 external functions and it makes it possible to make the whole
86 thing a single DLL/SO.
88 Added Segment handler for backend server.
90 Added Zmbol/Zebra administrative functions to YAZ client.
92 Threaded frontend server on UNIX (when POSIX Threads are available).
93 Starting the server with option -T enables multi-threading.
97 Added configure option --enable-comp/disable-comp to control use
98 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
99 located in sub directory asn.
101 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
102 in ${exec_prefix}/bin along with the other programs yaz-client and
105 GNU automake used to maintain makefiles.
109 Changed retrieval module so that we can load records with no abstract
110 syntax defined. Tagpaths in these records are fully composed of string
113 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
117 On UNIX, the generated makefile now supports a proper 'make install'.
118 The prefix can be set via GNU configure to set the install location
119 (default is /usr/local).
121 * YAZ programs client and ztest were renamed to yaz-client and
122 yaz-ztest to avoid conflicts when users install YAZ in "standard"
123 locations, such as /usr/bin,/usr/local/bin,etc.
125 * YAZ Header files were moved from include to include/yaz. YAZ Header
126 files are referred to as include <yaz/log.h> rather than <log.h>.
127 The YAZ include path (-I ..) is therefore the same as before. Programmers
128 should update their #include statements or use -Ipath/include/yaz
129 instead. The main motivation for doing this change is that YAZ header files
130 can be installed in "standard" locations /usr/include,/usr/local/include
131 without introducing conflicts, since ALL YAZ header files are stored
132 in subdirectory yaz (under /usr/include for example).
134 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
135 rather than project/workspace files. We switched because project files
136 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
139 Changed name of logging function, logf, to yaz_log, to prevent name
140 clash with some math-log functions. The YAZ header log.h defines logf
141 to yaz_log (#define) so there should be no incompatibilities by this
144 Added bend_start/bend_stop handlers for server. These handler are
145 called on start/stop of server. For windows they are called whenever
146 a service is started/stopped.
148 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
149 a fairly small ASN.1 compiler written in Tcl. The compiler is located
150 in util/yc.tcl. The auto-generated C code structures are, in a few
151 cases, incompatible with the old decoders. There are differences in the
152 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
153 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
154 The preprocessor variable ASN_COMPILED is defined when the compiled
155 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
156 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
157 wish to use the old encoders/decoders you can specify --disable-yc
160 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
161 version so that it supports both new - and old version of DB Update
163 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
164 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
165 change. The name parameter can be set to 0 in which no name is specified
166 for the construction. The macros odr_implicit and odr_explicit sets name
167 parameter to zero for the construction involved. New macros
168 odr_implicit_tag and odr_explicit_tag are similar to the others,
169 except that a name parameter is added. For programmers' that don't use
170 ODR they probably only need to change the call to z_APDU and z_External.
172 Added access control facility by interfacing the TCP wrapper library.
173 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
174 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
175 name of the daemon and enables the access control as specified in
176 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
178 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
179 den Dool <H.M.vdnDool@kub.nl>.
181 Added reference ID parameter to most functions in server API - refer
182 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
184 Changed name of ccl library to libccl.a (was ccl.a).
186 Fixed bug in decoder for Explain (Category TargetInfo).
188 Added support for GNU readline in client. Thanks to Jacob Poulsen
189 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
191 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
192 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
193 IMPLEMENTATION! This change was made to the development version before
194 the ZIG decided to retract the amendment. If any users MUST be
195 compatible with the original Update definition, PLEASE CONTACT US, and
196 we will include a separate definition corresponding to the old Update
197 ES. Note that because of the change to the ASN.1 of the
198 TaskPackageRecordStructure we cannot define a single structure that
199 will support both versions.
201 * Added const modifier to buffer parameter for some ODR/BER encoding
202 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
203 completeWAIS, odr_dumpBER.
205 Fixed bug in client.c which caused a crash when a scanResponse didn't
206 contain positionOfTerm.
208 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
209 * will cause an error in a client if a non-YAZ target sends both a
210 * list of Scan entries and non-surrogate diagnostics.
212 Retrieval module enhancements. Tag sets may be typed in the reference
213 to it. From the .abs-file the "tagset" directive takes a third optional
214 integer type for the tag set referenced. From a .tag-file the "include"
215 directive takes a third optional type as well. The old "type" directive
216 in the tag set itself is still recognized but acts as the default type
219 Backend interface change. Individual Scan terms returned from bend_scan
220 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
221 in include/backend.h.
223 Retrieval module enhancements. Multiple tag sets and attribute sets may
224 be specified in abstract syntax specs. Revised the error/warning for
225 logging messages reported by the retrieval module when reading the
228 Object Identifier system (oid_..) changed. The API is backwards
229 compatible but the oid-routines now allocates new OID's when needed.
230 Raw OID's may be specified in oid_getvalbyname.
232 YAZ now uses GNU configure to generate Makefile(s).
234 * Minor changes in some of the member names of DeleteResultSetRequest and
235 DeleteResultSetResponse. See include/proto.h.
237 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
238 and added member 'languages' in TargetInfo (which was missing).
240 Changed the way attribute sets are handled in the retrieval
241 module. These are now cached, just like the abstract syntaxes
244 Changed YAZ so that it links with compiled ASN.1.
246 Added Explain-schema definitions and mapping routines. The following
247 Explain categories have been implemented: AttributeDetails,
248 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
250 Fixed minor bug in Windows version of Server Library.
252 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
254 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
256 Added EXTERNAL: UNIverse Resource Report (non-standard).
258 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
259 ENUMERATED and SET OF.
261 * Added 'const' to some of the char pointer arguments for the
262 functions, data1_read_node, data1_getelementbytagname,
263 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
266 Fixed bug in data1_insert_taggeddata - the last_child member of
267 parent wasn't initialised.
269 * Changed data1_read_record and data1_read_node so that the supplied
270 "SGML"-buffer is read-only. In particular the resulting data1 - tree
271 doesn't refer to any parts of the "SGML"-buffer.
273 Fixed bug in server library (Windows version of statserv_remove).
275 * Changed code so that it compiles as C++. The type definition
276 of Odr_fun which is a member of Odr_arm was changed. The result is,
277 that an explicit typecast is needed for the fun pointer when
278 using Odr_arm - as in:
279 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
281 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
283 Implemented the new structured date and time definition as approved
284 by the ZIG. Added schemaId element to the specificTag in Espec-1
285 (also approved at the last ZIG). Thanks to RVDM.
287 Added some Object identifiers (RVDM).
289 Changed the Update Extended Service (RVDM).
291 Added command "refid" to client which specifies referenceId for
292 the following requests.
294 Implemented extended service handling for server. See ztest.c
295 for an example as well as backend.h. New handlers are registerd
298 * Changed interface for sort in server.
300 Added new members to statserv_options_block. It allows a server
301 to read options from another source than just the command line. Thanks
302 to Charles Woodfield.
304 * Changed definition of Z_Triple in file prt-grs.h - member boolean
305 renamed to zboolean. Some C++ compilers complained about the name.
307 Minor changes to gils.abs. Added index 's' (sort) on title
308 and date/time-last-modified.
312 Fixed bug in server library regarding inetd mode (-i). This bug
313 was introduced by release 1.4.
317 Added sort facility in client and backend server interface.
319 Fixed problem with dependencies in Makefile(s).
321 Fixed bugs for encoders/decoders of extended services and
324 Implemented sub-tree feature for schemas. Sub-trees are
325 referenced in *.abs-files. See explain.abs for an example
326 of the use of this feature.
328 Modified bib1.att; local attributes for ANY didn't include
329 ANY itself (only affects use of the retrieval module).
331 Fixed bug in plain SGML reader in function data1_read_node:
332 tags with prefix "var" was incorrectly interpreted as variants.
334 Added feature "sub-schemas" to enable references to - and definitions
335 of - group of elements.
337 * Removed member parent from type data1_element (in data1.h).
339 Implemented function odr_nullval() that returns the value of
342 * Removed member num_children from data1_node (in data1.h).
344 Made NT service interface part of the server library. The
345 function statserv_main uses the NT service when required and
346 calls the statserv_start / statserv_close routines.
348 Routine zget_SearchRequest and zget_PresentRequest fills
349 resultSetName/Id member with "default" instead of "Default".
351 Fixed memory leak in server. Request queue member wasn't freed.
353 Fixed nmem_exit so that memory is freed.
357 Revised the CCL parser utility to be thread safe.
359 Added function, oid_ent_to_oid, to replace the function
360 oid_getoidbyent, which is not thread safe.
362 * Added nmem_init and nmem_exit to initialize and release
363 NMEM resources. Function nmem_init should be called once in the
364 initial thread before NMEM/ODR is used. statserv.c and client.c
365 have been changed accordingly. The change was necessary to make
366 NMEM thread safe. The NMEM memory pool is shared amongst threads
367 in a process. Unix-based applications will still work fine without
370 Added NT Services interface for the the Z39.50 (statserv) Server.
371 Refer to the ztest.c source on the usage.
373 Windows 95/NT port using MSVC5.0. Project files are included in the
376 * Defined new 'global' handle for the retrieval (data1) system. The
377 new handled, data1_handle, describes the state of the data1 system.
378 This handle is passed as first argument to virtually all
379 data1 related routines. The functions data1_create and data1_destroy
380 creates and destroys a data1 handle respectively.
382 Added ODR encode stream member to all backend request structures
383 init, search, scan etc. This stream should be used to allocate all
384 memory used for the response when thread safe operation is needed.
386 Changed the comstack utility, cs_addstr, to be thread safe. The
387 returned hostname string returned by the function is now part the
390 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
391 function. The cs_straddr takes a COMSTACK handle as argument, so this
392 function must be used after cs_create and before bind/connect.
393 This function is thread safe.
395 Moved test server to 'ztest' directory - generic server code still
396 in 'server' directory.
398 Made prefix query (pquery.c) utility thread safe.
400 Added new function modifier YAZ_EXPORT to 'export' public DLL
401 functions when using windows (see include/yconfig.h).
403 Added definitions to the OID database (util/oid.c) (RVDM).
405 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
407 Added call to ccl_rpn_delete in client program.
409 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
410 release of RPN structure.
412 Added support for C++, headers uses extern "C" for public definitions.
413 With input from RVDM.
415 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
416 Thanks to Ronald van der Meer (RVDM).
418 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
420 Added support for private extensions to the OID database
421 (oid_setprivateoids()). Thanks to RVDM.
423 Added optional, physical ANY (key replication)
425 Fixed null-reference problem in GRS-1 output filter.
427 Proximity operator added to Prefix Query Format (PQF).
429 In test client command "base" accepts multiple databases.
431 Fixed bug in cs_close stack that caused trouble with WINSOCK.
435 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
437 Smallish bug-fixes in the new encoders/decoders (explain).
439 Bug fixed in DeleteRequest.
441 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
443 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
445 Added SOIF syntax (using private OID for now) to retrieval module and client.
447 Added Update extended service.
449 Added SearchResult-1 additional info structure.
451 Added optional CCL (ISO8777) interpreter as separate module. Available
454 --- 1.2 1996/6/10 (1st anniversary release)
456 Added Summary record syntax. Lightly tested.
458 Added OPAC record syntax. Untested.
460 Added ResourceReport service encoders/decoders. Untested.
462 Fixed bug in z_Unit - wrong tagging on unitSystem.
464 Fixed bug in the DiagRecs decoder.
466 Added options for max PDU size and session timeout to frontend-server.
468 Added documentation of query-language parsers and other supporting utilities.
470 [frontend-server] Added Attribute set to the bend_scanrequest API.
472 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
473 surrogate diagnostics were generated.
475 [retrieval] Allow multiple local values for attribute.
477 [retrieval] Allow multiple attributes per element in .abs files. index type.
479 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
483 Minor changes, mostly specific to Zebra's requirements (retrieval)
487 Repaired bug in frontend server when running multiple listening
488 endpoints in dynamic mode.
490 z_External() now won't break if a known, ASN.1 value comes encapsulated
491 in an octet-string. The value will pass through unmodified in an Odr_oct.
493 Added a bit of code to the demo client to decode & display
494 ASN.1-structured records represented in the octet-aligned branch of
495 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
497 Added z_ext_getentbyref() to the ASN module. Doc updated.
499 * Completed the SCAN definition in the ASN module. This may break SCAN
500 code based on older YAZ-versions at compile-time. The fix is easy -
503 * Added 'displayTerm' and OtherInformation to the TermInfo structure
504 under the SCAN definition. Remember to initialize this, server-people.
506 Comstack should now support the WAIS protocol in TCP/IP mode. Note
507 that this does not extend to ODR and ASN.
509 Comstack allows insertion of established socket (primarily for
510 inetd-operation of servers). Doc updated.
512 Front-end server can now start from the inetd in TCP mode. Doc
519 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
520 the rank and record number.
522 Adjustments to the frontend server.
524 Fixed diagnostic BER dumper. It ignored the file argument.
528 Various changes to retrieval module.
530 Changed the union discriminators of the protocol files from enums to
531 ints paired with #defines.
533 *Changed oident.class to oident.oclass to avoid a reserved word in C++
536 *Changed operator in the RPN structure to 'roperator', again to avoid a
539 Fixed problems in Explain decoders/encoders.
543 Memory bug in log module fixed.
547 Occasional malloc() of 0 bytes fixed in d1_espec.c.
549 Bug in Explain DatabaseInfo module fixed.
551 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
555 The shift to v1.0 signals that we now consider the *core* functionality
556 of YAZ reasonably stable (the core being more or less equivalent to
557 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
558 tested (Explain not at all - though that will happen soonish).
560 Minor changes to code to support Windows port.
562 Various minor changes after we're getting to use GRS-1 & co. more.
564 Added Espec-1 format.
566 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
567 of the protocol and it cannot be selected when encoding (maps into 'string'
568 when decoding). Needed to talk to some servers.
570 Demo client can request simple element set names.
572 Added Diagnostic Format encoders/decoders.
574 Added simple Close handling to frontend server (no hooks for resource
575 reporting yet), and demonstration client.
577 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
581 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
582 handled incorrectly when records were requested in the searchResponse. This
583 will only affect you if you use the frontend-server.
585 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
586 Test-client will ask for and print GRS1. Ztest will return dummy records
589 Added Explain encoders/decoders to the service-level API. Untested.
591 Added Extended Services: Item Order encoders and decoders to the Service-
592 level API. Untested. We could use a recent copy of the pertinent bits
593 of the ILL protocol to add those bits.
595 Added diagnostic format 1 encoders/decoders to the service-level API.
598 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
599 odr_cons.c, which causes a more correct output.
601 Fixed handling of searchRequest in frontend server. NextResultSetPosition
602 was always set to 0 when no records were requested in the searchRequest.
604 * Added better external-handling. This shouldn't harm old code that
605 *encodes* externals. It can break code that looks for a
606 'single-ASN1-type' representation, since those types that are known
607 are now decoded immediately. Look at the SUTRS sample code in
608 seshigh.c and client.c. Documentation updated.
610 Handling of structured records in bend_fetchresponse. Length -1 marks
611 structured record, type is deduced from format field.
614 Fairly quick maintenance release to add SUTRS support.
616 Fixed handling of SUTRS records in the demonstration client.
618 * Added format field to the bend_fetchrequest and bend_fetchresponce
619 structures of the backend API (frontend server). When the record is
620 returned, the value of the format field is mapped to an OID. The
621 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
622 of the record. The special value VAL_NONE in the bend_request means
623 that no specific format was requested by the client. Documentation
624 updated accordingly. Test server (ztest) will return a fixed dummy
625 SUTRS record if your client requests SUTRS.
627 Documentation updated accordingly.
629 You can now set external libraries and RANLIB support in the top-level
633 First public release.