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19 bend_fetchresult have been replaced by single bend_fetch_rr struct.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