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Revision 2693 - (hide annotations) (download)
Wed Mar 5 19:44:46 2014 UTC (7 years, 9 months ago) by davidg
File size: 17204 byte(s)
Changelog for define cmdline arg and new rcmode

1 davidg 1758 ==============================================================================
2     CHANGES to fetch-crl - the Certificate Revocation List retrieval tool
3     ==============================================================================
4     The fetch-crl utility will retrieve certificate revocation lists (CRLs) for
5     a set of installed trust anchors, based on crl_url files or IGTF-style info
6     files. It will install these for use with OpenSSL, NSS or third-party tools.
7    
8 davidg 2690 Changes in 3.0.13-1
9     ----------------------
10     * Supplied system init script for boot phase will not re-run inadvertently
11 davidg 2693 * Add rcmode config option (added differentiated reporting and success-on-
12     solely-retrieval-errors)
13     * Add --define key=val command line argument to augment configuration data
14 davidg 2690
15 davidg 2672 Changes in 3.0.12-1
16     ----------------------
17     * PEM formatted CRLs now always include a final newline character (fix
18     provided by Harald Barth <haba@kth.se>)
19    
20 davidg 2639 Changes in 3.0.11-1
21     ----------------------
22     * Added reference to /etc/fetch-crl.d/ to the man page, used shortened URL
23     to full documentation in man page
24 davidg 2648 * Added version information to help output and added -V option
25     * Added a dangerous clean-crl script to remove stale .r* files (beware!)
26 davidg 2639
27 davidg 2608 Changes in 3.0.10-1
28     ----------------------
29     * Added a "noquiet" option in the configuration file that will override
30     the default single "-q" option in the cro-job that is shipped with
31     the fetch-crl3 init scripts (feature request by Ryan Taylor)
32     * Added option "--inet6glue" and "inet6glue" config setting to load
33 davidg 2609 the Net::INET6Glue perl module (if it is available) to use IPv6
34 davidg 2608 connections in LWP to download CRLs
35    
36 davidg 2433 Changes in 3.0.8-1
37     ----------------------
38     * Trust anchor name inferrence based on retrieved-CRL added as option (at cost
39     of retrieving CRL even if there is no accompanying trust anchor found later)
40     Option is disabled by default, but can be enabled by using @HASH@ in the
41     ca-template name list. (feature request by Rob van der Wal, SARA, NL)
42    
43 davidg 2305 Changes in 3.0.7-1
44     ----------------------
45     * CRL modofication time heuristic inadvertently modified file name templates
46     (solves issue kindly reported by Elan Ruusamae)
47     * Expanded representation of tokenisation characters in strings to work
48     around bug in file(1) (rhbz#699546, works around RedHat Bugzilla 699548)
49    
50 davidg 2233 Changes in 3.0.6-1
51     ----------------------
52     * Response parsing disabled to suppress superfluous warning on unexpected
53     UTF-8 respons when retrieving a CRL (solves RedHat Bugzilla 688902)
54    
55 davidg 2188 Changes in 3.0.5-1
56     ----------------------
57     * CRLs for multiple similarly-named trust anchors might not all be downloaded.
58     This is fixed in this release.
59     * Spurious "restoreLogMode" internal errors are no longer raised
60    
61 davidg 2085 Changes in 3.0.4-1
62     ----------------------
63     * Add support for directory based drop-in configuration in /etc/fetch-crl.d/
64     * Only use cached CRL contents if the nextUpdate time of the cached CRL is
65     still in the future. This will ensure that a new download is attempted
66     each and everytime for CRLs that have already expired.
67    
68 davidg 1924 Changes in 3.0.3-1
69     ----------------------
70     * Clean up of man page format macro PU (reported by Mattias Ellert)
71    
72 davidg 1922 Changes in 3.0.2-1
73     ----------------------
74     * Clean up of man page format macro PU (reported by Mattias Ellert)
75    
76 davidg 1901 Changes in 3.0.1-1
77     ----------------------
78     * hunts through more places to find the latest successful CRL download to
79     set the latest local modification time for a CRL
80     (resolves a comparison error in case output and infodir are unset)
81    
82 davidg 1878 Changes in 3.0.0-0.RC4
83     ----------------------
84     * the config file name has changed to fetch-crl.conf, although a
85     fetch-crl.cnf file will also be used when present
86     * symlinked meta-data files can be ignored with the --nosymlinks option
87     (or nosymlinks in the configuration file). This allows fetch-crl to be
88     used effectively with new-format IGTF distribution before 1.37
89     * infinite loop for non-indexed CA file names fixed
90    
91 davidg 1758 Changes in fetch-crl 3.0
92     ------------------------
93     * fetch-crl 3.0 is a complete re-write, and shares no code with the 1.x and
94     2.x series utility of the same name, although the function and some of
95     the syntax is obviously the same
96    
97     * support for multiple output formats: OpenSSL 1 in dual-hash mode, specific
98     DER and PEM outputs, and NSS databases
99     * support for multiple CRLs for a single CA, allowing more than one CA with
100     the same subject name but different CLRs. Review your client software to see
101     if and how these CRLs are used.
102     * stateful retrieval helps reduce bandwidth usage by caching the CRLs locally
103     and respecting the Cache Control headers sent by the web server hosting the
104     CRL. This can reduce the number of downloads
105     * support for HEAD-only requests when state preservation is used (initially
106     only retrieve HTTP headers, and only if the CRL actually changed to a full
107     download)
108     * support for more CRL retrieval protocols (file:// and ftp://)
109     * ability to try site-local URLs first, before relying on the URLs shipped with
110     the trust anchor. This allows building an explicit local caching (web) server.
111     * ability to specify additional URLs to try in case the URLs shipped with the
112     trust anchor were not responsive. This allows for automatic fall-back to
113     (local or global) mirror services for CRL downloads
114     * warnings and errors can be suppressed on a per-trust anchor basis, to allow
115     silencing for particularly unstable trust anchors
116     * aging tolerance (the delay time before errors are generated in case downloads
117     consistently fail) can be configured on a per-trust anchor basis
118     * parallel downloading for multiple trust anchors
119     * minimized use of temporary files in the file system (now limited to the
120     invocation of OpenSSL only, and only for brief periods of time)
121     * dependencies on wget, lynx and other unix utilities have been removed
122     * explicit web proxy support (using LWP http proxies)
123     * completely re-written in perl, with some (hopefully minimal) dependencies:
124     LWP, Sys::Syslog, POSIX. And Data::Dumper (when debugging is enabled),
125     and IO::Select (if parallel downloads are enabled).
126    
127     Differences with respect to the previous versions
128    
129     * when downloading CRLs via https, the server certificate is not checked,
130     neither for the correct DNS name nor for being issued by a valid CA. Since
131     the CRL in itself is signed, this is not a security vulnerability. If
132     stricter checking is anyway desired, and the Crypt::SSLeay perl module has
133     been installed, set the HTTPS_CA_FILE environment variable before invoking
134     fetch-crl -- but keep in mind that the DNS name verification is limited
135     and will (incorrectly) reject DNS names if these are listed only in the
136     subjectAlternativeName of the server certificate
137     * Existing files with a name that matches a CRL target name are overwritten,
138     even if they did not originally contain CRL data. In v2 this was configurable
139     via the FORCE_OVERWRITE configuration setting. In version 3, files are
140     overwritten by default, and this can no longer be configured.
141     * fetch-crl3 will no longer check CA certificates for consistency or validity
142     by themselves, only retrieved CRLs are verified
143    
144     Downsides of the new version
145    
146     * it requires perl5 to be installed (tested with perl 5.8.0 and higher) with
147     libwww-perl, whereas version 2 only required a traditional Bourne shell
148     * requires a version of OpenSSL (0.9.5a or better) to be installed. Needs
149     OpenSSL 1.0.0 (at least beta5) for dual-hash support.
150     * when using parallel downloads, it can only run on pure-POSIX systems
151     * parallelism in combination with the NSS database output format is not tested
152     * Even when only the NSS database output format has been selected, OpenSSL is
153     still needed for verification and processing
154    
155    
156     ==============================================================================
157    
158     The change log below applies to the 1.x and 2.x series fetch-crl and is
159     included for historical purposes only. Fetch-crl3, with which this
160     changes file is being shipped, is a complete re-write of the utility.
161     Although a lot of backwards compatibility has been preserves, there have
162     been significant changes and the information below should NOT be used
163     to infer any behaviour of fetch-crl3.
164    
165     Fetch-crl 1.x and 2.x were released under the EU DataGrid License.
166    
167     Changes in version EGP 2.8.5
168     ----------------------------
169     (2010.06.03)
170    
171     * fetch-crl was occasionally leaving behind {hash}.r0.XXXXXX.r0 files
172     This has been fixed in this release (patch thanks to Jason Smith, BNL)
173     * man page was not compliant to Debian guidelines, this has been fixed
174     (patch thanks to Mattias Ellert, Uppsala University)
175    
176     Changes in version EGP 2.8.4
177     ----------------------------
178     (2010.04.04)
179    
180     * Fixes error when randomWait is not set [RH Bug 579488]
181    
182     Changes in version EGP 2.8.3
183     ----------------------------
184     (2010.03.28)
185    
186     * Preserve SELinux context for CRL files if SElinux status program exists
187     and selinux is enabled (RH bug 577403)
188     * Fix argument parsing on syslog facility specification (RH bug 577387)
189     * Increase granularity of the RandomWait and allow for 0 in -r option
190    
191     Changes in version EGP 2.8.2
192     ----------------------------
193     (2010.03.03)
194    
195     * Improved support for multiple CRL URLs by downloading until a success
196     is achieved, instead of downloading all of them
197     * Imported randomwait patch from Steve Traylen
198    
199     Changes in version EGP 2.8.1
200     ----------------------------
201     (2010.01.26)
202    
203     * The installed CRL file is re-checked for validity to catch file system
204     errors and local disk corruption. When possible, it will try to restore
205     a backup copy. Failures are not subject to aging tolerance.
206    
207     Changes in version EGP 2.8.0
208     ----------------------------
209     (2009.09.22)
210    
211     * The RPM packaging has been overhauled and is now sufficiently conformant
212     to EPEL and FedoraProject guidelines.
213     * New init scripts and a cron job entry have been added to allow management
214     of fetch-crl via the chkconfig mechanism
215    
216     These changes were contributed by Steve Traylen (CERN, Geneva, CH).
217    
218     Changes in version EGP 2.7.0
219     ----------------------------
220     (2009.01.25)
221    
222     * Warnings and errors are now counted. If there are errors in the download
223     or verification process for one or more CRLs, the exit status will be 1;
224     if there are errors in the local setup or in the script invocation, the
225     exit status will be 2.
226     * The installed CRLs no longer have the textual representation of the CRL,
227     but only the PEM data blob, thus reducing IO and memory requirements.
228     * the CRL aging threshold is now set by default to 24 hours. The previous
229     default was 0. The CRL aging threshold is set in the config file using
230     CRL_AGING_THRESHOLD=<xx>, or with the "-a" command-line argument.
231     * Default network timeouts reduced to 10 seconds (was 30) and retries to 2
232     * Added caching and conditional downloading. When CACHEDIR is set, the
233     original downloads are preserved and wget timestamping mode enabled.
234     When the content did not change, only the timestamp on the installed
235     CRL is updated. If SLOPPYCRLHASHES is set, the has is calculated based
236     on the name of the crl_url file, otherwise it is taken from the CRL itself.
237     - The CACHEDIR must be exclusively writable by the user running fetch-crl
238     - Setting CACHEDIR significantly reduced the bandwidth used by fetch-crl
239     * Added RESETPATHMODE setting in sysconfig. It defines whether or not to
240     set re-set $PATH to "/bin:/usr/bin" before start. The search for OpenSSL
241     may be done based on the old path.
242     yes=always replace; searchopenssl=search for openssl first and then reset;
243     no=keep original path, whatever that me be (may be empty if called from cron)
244     Default="yes". This replaces the hard-coded path in the tool!
245     * Hidden "FORCE_OVERWRITE" option now has a regular name. This is backwards-
246     compatible. Set FORCE_OVERWRITE=yes if you want files overwritten that
247     have a CRL-like name and ought to have CRL content, but currently do not.
248     * Addresses gLite Savannah bugs 28418 and 29559. Bug 27023 is partially
249     addressed. Bug 20062 can be remedied with WGET_OPTS arguments.
250     Addresses OSG ticket 4673.
251    
252     Changes in version EGP 2.6.6
253     ----------------------------
254     (2007.09.16)
255     (version 2.5.5 is invalid and was not publicly released)
256    
257     * Added obscure configuration parameter to allow overwriting of
258     arbitrary data files with a downloaded CRL (on request of
259     CERN, see https://savannah.cern.ch/bugs/index.php?29559)
260    
261     Changes in version EGP 2.6.4
262     ----------------------------
263     (2007.08.15)
264    
265     * Expired CA issuer certificate now gives a warning instead of an error
266     with the full verification result message
267     * additional logfile output target can be selected via the configuration file
268     * CRL aging threshold documented in manual page. Errors will now also be
269     generated in the CRL download failed consistently and the current CRL
270     has already expired
271    
272     Changes in version EGP 2.6.3
273     ----------------------------
274     (2006.11.13)
275    
276     * cron job example: fetch-crl invocation syntax error corrected
277    
278     Changes in version EGP 2.6.2
279     ----------------------------
280     (2006.10.27)
281    
282     * fixed bug: older wget versions do not recognise --no-check-certificate
283    
284     Changes in version EGP 2.6.1
285     ----------------------------
286     (2006.10.25)
287    
288     * fixed local timezone vs UTC error in LastUpdate CRL validation comparison
289     * fixed time comparison is the one-hour LastUpdate/download tolerance
290     (both fixes thanks to Alain Roy)
291     * added support for directory names containing whitespace
292     * added support for syslog reporting (via -f option or SYSLOGFACILITY directive)
293     * SERVERCERTCHECK=no is now the default. It can be reset via the configuration
294     file, or using the "--check-server-certificate" commandline option
295     * the main configuration file location (formerly fixed to be
296     /etc/sysconfig/fetch-crl) can now be set via the variable $FETCH_CRL_SYSCONFIG
297     * logfile format timestamp and tag have been normalised
298    
299     Changes in version EGP 2.6
300     --------------------------
301     (2006.05.20)
302    
303     * if the current local CRL has a lastUpdate time in the future, and the
304     newly downloaded CRL is older that the current one, allow the installation
305     of the newly downloaded CRL and issue a warning.
306     * added non-suppressable warning in case the newly downloaded CRL has a
307     lastUpdate time in the future, but install that CRL anyway (as the local
308     clock might have been wrong).
309    
310     Changes in version EGP 2.5
311     --------------------------
312     (2006.01.16)
313    
314     * added additional configuration arguments and configuration variables
315     to skip the server certificate check in wget
316     (to support https:// URLs where the server is authenticated with
317     a certificate that is not part of it's own trusted domain, such as
318     the KISTI URL)
319    
320     Changes in version EGP 2.4
321     --------------------------
322     (2005.11.15)
323    
324     * for those platforms that support the stat(1) command, and in case the
325     .crl_url file is named after the hash of the crl subject name to download,
326     error eporting for individual download errors can be suppressed for
327     a configurable amount of time as set via the "-a" option (unit: hours).
328    
329     Changes in version EGP 2.3
330     --------------------------
331     (2005.11.05)
332    
333     * do not replace recent CRLs with ones that have an older lastUpdate
334     timestamp (prevents ARP/DNS DoS attacks)
335    
336     Changes in version EGP 2.2
337     --------------------------
338     (2005.10.27)
339    
340     * secure http download by wget recognise the CAs in the trusted directory.
341     solves the issue described in the LCG bug tracking system
342     https://savannah.cern.ch/bugs/index.php?func=detailitem&item_id=12182
343    
344     Changes in version EGP 2.1
345     --------------------------
346     (2005.08.12)
347     * specifically look for the most recent version of OpenSSL. The
348     one in GLOBUS_LOCATION (which used to take precedence in the
349     previous releases) is outdated in many cases and caused
350     troubles on the LCG production systems in validating v2 CRLs
351     * added manual page fetch-crl(8)
352    
353     Changes in version EGP 2.0
354     --------------------------
355     (2005.02.28)
356     * name of the installed script changed to "fetch-crl"
357     * the cronjob script is no longer installed by default, but supplied
358     as an example in the %doc directory
359     * RPM is now relocatable (default install in /usr)
360     * READMA and CHANGES file now inclued in %doc tree
361     * make install now installs
362     * version increased to 2.0
363    
364     Changes in version EGP 1.9
365     --------------------------
366     (2005.02.24)
367     * the content of the final target CRL file is now checked for
368     containing a valid CRL if it already exists. If it does not
369     contain a CRL, an error is displayed and the file left untouched
370     So making the final ".r0" file in ${outdir} a link to something else
371     will not work, preventing an escalation in the final stage.
372    
373     Changes in version EGP 1.8
374     --------------------------
375     (changes from Fabio's version 1.7, 2005.02.24)
376    
377     * All temporary files (the initial CRL download using wget
378     and the PEM-converted version of that file) are now created using
379     mktemp
380     * the RetrieveFileByURL function will not overwrite files that
381     have any data in them
382     * Note that the script can be run by a non-priviledged user, but
383     that the output directory must be made writable by that user
384     in an out-of-band way.
385    
386     EDG version 1.7
387     ---------------
388     Imported with consent of Fabio Hernandez and Steve Traylen from
389     the original EDG repository.
390     The EU DataGrid License applies, see http://www.eu-datagrid.org/

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