1 Possible compatibility problems with earlier versions marked with '*'.
3 * Added prefix "yaz_" for the functions log_init.., log_file.. and
4 log_mask_str. This was done to avoid name conflicts with other
5 libraries (say other PHP extensions).
7 Added raw OID member for preferred record syntax (request_format_raw)
8 and returned record syntax (output_format_raw) for backend fetch method.
10 Config file yaz-config now accepts options so that it returns specific
11 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
13 Shared library support for UNIX using GNU libtool.
15 * Modified backend interface. Request/Response struct's replaced by
16 one read/write C struct. For example bend_fetchrequest and
17 bend_fetchresult have been replaced by single bend_fetch_rr struct.
18 Every handler - even search has to be registered in bend_init
19 handler. This means that the YAZ library no longer refers to
20 external functions and it makes it possible to make the whole
21 thing a single DLL/SO.
23 Added Segment handler for backend server.
25 Added Zmbol/Zebra administrative functions to YAZ client.
27 Threaded frontend server on UNIX (when POSIX Threads are available).
28 Starting the server with option -T enables multi-threading.
32 Added configure option --enable-comp/disable-comp to control use
33 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
34 located in sub directory asn.
36 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
37 in ${exec_prefix}/bin along with the other programs yaz-client and
40 GNU automake used to maintain makefiles.
44 Changed retrieval module so that we can load records with no abstract
45 syntax defined. Tagpaths in these records are fully composed of string
48 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
52 On UNIX, the generated makefile now supports a proper 'make install'.
53 The prefix can be set via GNU configure to set the install location
54 (default is /usr/local).
56 * YAZ programs client and ztest were renamed to yaz-client and
57 yaz-ztest to avoid conflicts when users install YAZ in "standard"
58 locations, such as /usr/bin,/usr/local/bin,etc.
60 * YAZ Header files were moved from include to include/yaz. YAZ Header
61 files are referred to as include <yaz/log.h> rather than <log.h>.
62 The YAZ include path (-I ..) is therefore the same as before. Programmers
63 should update their #include statements or use -Ipath/include/yaz
64 instead. The main motivation for doing this change is that YAZ header files
65 can be installed in "standard" locations /usr/include,/usr/local/include
66 without introducing conflicts, since ALL YAZ header files are stored
67 in subdirectory yaz (under /usr/include for example).
69 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
70 rather than project/workspace files. We switched because project files
71 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
74 Changed name of logging function, logf, to yaz_log, to prevent name
75 clash with some math-log functions. The YAZ header log.h defines logf
76 to yaz_log (#define) so there should be no incompatibilities by this
79 Added bend_start/bend_stop handlers for server. These handler are
80 called on start/stop of server. For windows they are called whenever
81 a service is started/stopped.
83 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
84 a fairly small ASN.1 compiler written in Tcl. The compiler is located
85 in util/yc.tcl. The auto-generated C code structures are, in a few
86 cases, incompatible with the old decoders. There are differences in the
87 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
88 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
89 The preprocessor variable ASN_COMPILED is defined when the compiled
90 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
91 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
92 wish to use the old encoders/decoders you can specify --disable-yc
95 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
96 version so that it supports both new - and old version of DB Update
98 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
99 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
100 change. The name parameter can be set to 0 in which no name is specified
101 for the construction. The macros odr_implicit and odr_explicit sets name
102 parameter to zero for the construction involved. New macros
103 odr_implicit_tag and odr_explicit_tag are similar to the others,
104 except that a name parameter is added. For programmers' that don't use
105 ODR they probably only need to change the call to z_APDU and z_External.
107 Added access control facility by interfacing the TCP wrapper library.
108 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
109 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
110 name of the daemon and enables the access control as specified in
111 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
113 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
114 den Dool <H.M.vdnDool@kub.nl>.
116 Added reference ID parameter to most functions in server API - refer
117 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
119 Changed name of ccl library to libccl.a (was ccl.a).
121 Fixed bug in decoder for Explain (Category TargetInfo).
123 Added support for GNU readline in client. Thanks to Jacob Poulsen
124 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
126 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
127 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
128 IMPLEMENTATION! This change was made to the development version before
129 the ZIG decided to retract the amendment. If any users MUST be
130 compatible with the original Update definition, PLEASE CONTACT US, and
131 we will include a separate definition corresponding to the old Update
132 ES. Note that because of the change to the ASN.1 of the
133 TaskPackageRecordStructure we cannot define a single structure that
134 will support both versions.
136 * Added const modifier to buffer parameter for some ODR/BER encoding
137 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
138 completeWAIS, odr_dumpBER.
140 Fixed bug in client.c which caused a crash when a scanResponse didn't
141 contain positionOfTerm.
143 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
144 * will cause an error in a client if a non-YAZ target sends both a
145 * list of Scan entries and non-surrogate diagnostics.
147 Retrieval module enhancements. Tag sets may be typed in the reference
148 to it. From the .abs-file the "tagset" directive takes a third optional
149 integer type for the tag set referenced. From a .tag-file the "include"
150 directive takes a third optional type as well. The old "type" directive
151 in the tag set itself is still recognized but acts as the default type
154 Backend interface change. Individual Scan terms returned from bend_scan
155 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
156 in include/backend.h.
158 Retrieval module enhancements. Multiple tag sets and attribute sets may
159 be specified in abstract syntax specs. Revised the error/warning for
160 logging messages reported by the retrieval module when reading the
163 Object Identifier system (oid_..) changed. The API is backwards
164 compatible but the oid-routines now allocates new OID's when needed.
165 Raw OID's may be specified in oid_getvalbyname.
167 YAZ now uses GNU configure to generate Makefile(s).
169 * Minor changes in some of the member names of DeleteResultSetRequest and
170 DeleteResultSetResponse. See include/proto.h.
172 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
173 and added member 'languages' in TargetInfo (which was missing).
175 Changed the way attribute sets are handled in the retrieval
176 module. These are now cached, just like the abstract syntaxes
179 Changed YAZ so that it links with compiled ASN.1.
181 Added Explain-schema definitions and mapping routines. The following
182 Explain categories have been implemented: AttributeDetails,
183 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
185 Fixed minor bug in Windows version of Server Library.
187 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
189 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
191 Added EXTERNAL: UNIverse Resource Report (non-standard).
193 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
194 ENUMERATED and SET OF.
196 * Added 'const' to some of the char pointer arguments for the
197 functions, data1_read_node, data1_getelementbytagname,
198 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
201 Fixed bug in data1_insert_taggeddata - the last_child member of
202 parent wasn't initialised.
204 * Changed data1_read_record and data1_read_node so that the supplied
205 "SGML"-buffer is read-only. In particular the resulting data1 - tree
206 doesn't refer to any parts of the "SGML"-buffer.
208 Fixed bug in server library (Windows version of statserv_remove).
210 * Changed code so that it compiles as C++. The type definition
211 of Odr_fun which is a member of Odr_arm was changed. The result is,
212 that an explicit typecast is needed for the fun pointer when
213 using Odr_arm - as in:
214 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
216 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
218 Implemented the new structured date and time definition as approved
219 by the ZIG. Added schemaId element to the specificTag in Espec-1
220 (also approved at the last ZIG). Thanks to RVDM.
222 Added some Object identifiers (RVDM).
224 Changed the Update Extended Service (RVDM).
226 Added command "refid" to client which specifies referenceId for
227 the following requests.
229 Implemented extended service handling for server. See ztest.c
230 for an example as well as backend.h. New handlers are registerd
233 * Changed interface for sort in server.
235 Added new members to statserv_options_block. It allows a server
236 to read options from another source than just the command line. Thanks
237 to Charles Woodfield.
239 * Changed definition of Z_Triple in file prt-grs.h - member boolean
240 renamed to zboolean. Some C++ compilers complained about the name.
242 Minor changes to gils.abs. Added index 's' (sort) on title
243 and date/time-last-modified.
247 Fixed bug in server library regarding inetd mode (-i). This bug
248 was introduced by release 1.4.
252 Added sort facility in client and backend server interface.
254 Fixed problem with dependencies in Makefile(s).
256 Fixed bugs for encoders/decoders of extended services and
259 Implemented sub-tree feature for schemas. Sub-trees are
260 referenced in *.abs-files. See explain.abs for an example
261 of the use of this feature.
263 Modified bib1.att; local attributes for ANY didn't include
264 ANY itself (only affects use of the retrieval module).
266 Fixed bug in plain SGML reader in function data1_read_node:
267 tags with prefix "var" was incorrectly interpreted as variants.
269 Added feature "sub-schemas" to enable references to - and definitions
270 of - group of elements.
272 * Removed member parent from type data1_element (in data1.h).
274 Implemented function odr_nullval() that returns the value of
277 * Removed member num_children from data1_node (in data1.h).
279 Made NT service interface part of the server library. The
280 function statserv_main uses the NT service when required and
281 calls the statserv_start / statserv_close routines.
283 Routine zget_SearchRequest and zget_PresentRequest fills
284 resultSetName/Id member with "default" instead of "Default".
286 Fixed memory leak in server. Request queue member wasn't freed.
288 Fixed nmem_exit so that memory is freed.
292 Revised the CCL parser utility to be thread safe.
294 Added function, oid_ent_to_oid, to replace the function
295 oid_getoidbyent, which is not thread safe.
297 * Added nmem_init and nmem_exit to initialize and release
298 NMEM resources. Function nmem_init should be called once in the
299 initial thread before NMEM/ODR is used. statserv.c and client.c
300 have been changed accordingly. The change was necessary to make
301 NMEM thread safe. The NMEM memory pool is shared amongst threads
302 in a process. Unix-based applications will still work fine without
305 Added NT Services interface for the the Z39.50 (statserv) Server.
306 Refer to the ztest.c source on the usage.
308 Windows 95/NT port using MSVC5.0. Project files are included in the
311 * Defined new 'global' handle for the retrieval (data1) system. The
312 new handled, data1_handle, describes the state of the data1 system.
313 This handle is passed as first argument to virtually all
314 data1 related routines. The functions data1_create and data1_destroy
315 creates and destroys a data1 handle respectively.
317 Added ODR encode stream member to all backend request structures
318 init, search, scan etc. This stream should be used to allocate all
319 memory used for the response when thread safe operation is needed.
321 Changed the comstack utility, cs_addstr, to be thread safe. The
322 returned hostname string returned by the function is now part the
325 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
326 function. The cs_straddr takes a COMSTACK handle as argument, so this
327 function must be used after cs_create and before bind/connect.
328 This function is thread safe.
330 Moved test server to 'ztest' directory - generic server code still
331 in 'server' directory.
333 Made prefix query (pquery.c) utility thread safe.
335 Added new function modifier YAZ_EXPORT to 'export' public DLL
336 functions when using windows (see include/yconfig.h).
338 Added definitions to the OID database (util/oid.c) (RVDM).
340 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
342 Added call to ccl_rpn_delete in client program.
344 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
345 release of RPN structure.
347 Added support for C++, headers uses extern "C" for public definitions.
348 With input from RVDM.
350 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
351 Thanks to Ronald van der Meer (RVDM).
353 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
355 Added support for private extensions to the OID database
356 (oid_setprivateoids()). Thanks to RVDM.
358 Added optional, physical ANY (key replication)
360 Fixed null-reference problem in GRS-1 output filter.
362 Proximity operator added to Prefix Query Format (PQF).
364 In test client command "base" accepts multiple databases.
366 Fixed bug in cs_close stack that caused trouble with WINSOCK.
370 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
372 Smallish bug-fixes in the new encoders/decoders (explain).
374 Bug fixed in DeleteRequest.
376 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
378 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
380 Added SOIF syntax (using private OID for now) to retrieval module and client.
382 Added Update extended service.
384 Added SearchResult-1 additional info structure.
386 Added optional CCL (ISO8777) interpreter as separate module. Available
389 --- 1.2 1996/6/10 (1st anniversary release)
391 Added Summary record syntax. Lightly tested.
393 Added OPAC record syntax. Untested.
395 Added ResourceReport service encoders/decoders. Untested.
397 Fixed bug in z_Unit - wrong tagging on unitSystem.
399 Fixed bug in the DiagRecs decoder.
401 Added options for max PDU size and session timeout to frontend-server.
403 Added documentation of query-language parsers and other supporting utilities.
405 [frontend-server] Added Attribute set to the bend_scanrequest API.
407 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
408 surrogate diagnostics were generated.
410 [retrieval] Allow multiple local values for attribute.
412 [retrieval] Allow multiple attributes per element in .abs files. index type.
414 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
418 Minor changes, mostly specific to Zebra's requirements (retrieval)
422 Repaired bug in frontend server when running multiple listening
423 endpoints in dynamic mode.
425 z_External() now won't break if a known, ASN.1 value comes encapsulated
426 in an octet-string. The value will pass through unmodified in an Odr_oct.
428 Added a bit of code to the demo client to decode & display
429 ASN.1-structured records represented in the octet-aligned branch of
430 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
432 Added z_ext_getentbyref() to the ASN module. Doc updated.
434 * Completed the SCAN definition in the ASN module. This may break SCAN
435 code based on older YAZ-versions at compile-time. The fix is easy -
438 * Added 'displayTerm' and OtherInformation to the TermInfo structure
439 under the SCAN definition. Remember to initialize this, server-people.
441 Comstack should now support the WAIS protocol in TCP/IP mode. Note
442 that this does not extend to ODR and ASN.
444 Comstack allows insertion of established socket (primarily for
445 inetd-operation of servers). Doc updated.
447 Front-end server can now start from the inetd in TCP mode. Doc
454 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
455 the rank and record number.
457 Adjustments to the frontend server.
459 Fixed diagnostic BER dumper. It ignored the file argument.
463 Various changes to retrieval module.
465 Changed the union discriminators of the protocol files from enums to
466 ints paired with #defines.
468 *Changed oident.class to oident.oclass to avoid a reserved word in C++
471 *Changed operator in the RPN structure to 'roperator', again to avoid a
474 Fixed problems in Explain decoders/encoders.
478 Memory bug in log module fixed.
482 Occasional malloc() of 0 bytes fixed in d1_espec.c.
484 Bug in Explain DatabaseInfo module fixed.
486 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
490 The shift to v1.0 signals that we now consider the *core* functionality
491 of YAZ reasonably stable (the core being more or less equivalent to
492 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
493 tested (Explain not at all - though that will happen soonish).
495 Minor changes to code to support Windows port.
497 Various minor changes after we're getting to use GRS-1 & co. more.
499 Added Espec-1 format.
501 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
502 of the protocol and it cannot be selected when encoding (maps into 'string'
503 when decoding). Needed to talk to some servers.
505 Demo client can request simple element set names.
507 Added Diagnostic Format encoders/decoders.
509 Added simple Close handling to frontend server (no hooks for resource
510 reporting yet), and demonstration client.
512 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
516 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
517 handled incorrectly when records were requested in the searchResponse. This
518 will only affect you if you use the frontend-server.
520 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
521 Test-client will ask for and print GRS1. Ztest will return dummy records
524 Added Explain encoders/decoders to the service-level API. Untested.
526 Added Extended Services: Item Order encoders and decoders to the Service-
527 level API. Untested. We could use a recent copy of the pertinent bits
528 of the ILL protocol to add those bits.
530 Added diagnostic format 1 encoders/decoders to the service-level API.
533 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
534 odr_cons.c, which causes a more correct output.
536 Fixed handling of searchRequest in frontend server. NextResultSetPosition
537 was always set to 0 when no records were requested in the searchRequest.
539 * Added better external-handling. This shouldn't harm old code that
540 *encodes* externals. It can break code that looks for a
541 'single-ASN1-type' representation, since those types that are known
542 are now decoded immediately. Look at the SUTRS sample code in
543 seshigh.c and client.c. Documentation updated.
545 Handling of structured records in bend_fetchresponse. Length -1 marks
546 structured record, type is deduced from format field.
549 Fairly quick maintenance release to add SUTRS support.
551 Fixed handling of SUTRS records in the demonstration client.
553 * Added format field to the bend_fetchrequest and bend_fetchresponce
554 structures of the backend API (frontend server). When the record is
555 returned, the value of the format field is mapped to an OID. The
556 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
557 of the record. The special value VAL_NONE in the bend_request means
558 that no specific format was requested by the client. Documentation
559 updated accordingly. Test server (ztest) will return a fixed dummy
560 SUTRS record if your client requests SUTRS.
562 Documentation updated accordingly.
564 You can now set external libraries and RANLIB support in the top-level
568 First public release.