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Revision 3172 - (hide annotations) (download)
Tue Mar 21 07:35:41 2017 UTC (4 years, 8 months ago) by davidg
File size: 18500 byte(s)
Combine 3.0.18 and 3.0.19

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 3171 Changes in 3.0.19-1
9     ----------------------
10     * Do not add spurious newline to DER-format files (fixes report 201670320-01)
11     * run a script after the completion of every fetch-crl run (uses postexec
12     directive in config file)
13    
14 davidg 2804 Changes in 3.0.17-1
15     ----------------------
16     * Add optional cache-control max-age headers in all requests to hint a
17     maximum caching time to intermediate servers (bugzilla #26)
18    
19 davidg 2783 Changes in 3.0.16-1
20     ----------------------
21     * Added cache state freshness constraints (default maxcachetime set to 96hrs)
22     * Re-set cache expiry of state data if CRL nextUpdate is within or beyond
23     7 hrs (config "expirestolerance") claimed URL Expiry or Cache-control max-age
24    
25 davidg 2761 Changes in 3.0.15-1
26     ----------------------
27     * Fixed issues resulting in undefined attribute values to be returned for CRL
28    
29 davidg 2715 Changes in 3.0.14-1
30     ----------------------
31     * Requesting CRL retrieval for an empty trust anchor store is now a warning
32     and no longer an error
33    
34 davidg 2690 Changes in 3.0.13-1
35     ----------------------
36     * Supplied system init script for boot phase will not re-run inadvertently
37 davidg 2693 * Add rcmode config option (added differentiated reporting and success-on-
38     solely-retrieval-errors)
39     * Add --define key=val command line argument to augment configuration data
40 davidg 2694 * Setting FETCHCRL_OPTIONS in /etc/sysconfig/fetch-crl will add these
41     options to the commandline of fetch-crl on start from cron or at boot time
42     Setting FETCHCRL_BOOT_OPTIONS adds them to the boot init script only
43     (e.g. FETCHCRLBOOTOPTIONS="--define rcmode=differentiated")
44     and FETCHCRL_CRON_OPTIONS does the same only for the cron job script
45 davidg 2690
46 davidg 2672 Changes in 3.0.12-1
47     ----------------------
48     * PEM formatted CRLs now always include a final newline character (fix
49     provided by Harald Barth <haba@kth.se>)
50    
51 davidg 2639 Changes in 3.0.11-1
52     ----------------------
53     * Added reference to /etc/fetch-crl.d/ to the man page, used shortened URL
54     to full documentation in man page
55 davidg 2648 * Added version information to help output and added -V option
56     * Added a dangerous clean-crl script to remove stale .r* files (beware!)
57 davidg 2639
58 davidg 2608 Changes in 3.0.10-1
59     ----------------------
60     * Added a "noquiet" option in the configuration file that will override
61     the default single "-q" option in the cro-job that is shipped with
62     the fetch-crl3 init scripts (feature request by Ryan Taylor)
63     * Added option "--inet6glue" and "inet6glue" config setting to load
64 davidg 2609 the Net::INET6Glue perl module (if it is available) to use IPv6
65 davidg 2608 connections in LWP to download CRLs
66    
67 davidg 2433 Changes in 3.0.8-1
68     ----------------------
69     * Trust anchor name inferrence based on retrieved-CRL added as option (at cost
70     of retrieving CRL even if there is no accompanying trust anchor found later)
71     Option is disabled by default, but can be enabled by using @HASH@ in the
72     ca-template name list. (feature request by Rob van der Wal, SARA, NL)
73    
74 davidg 2305 Changes in 3.0.7-1
75     ----------------------
76     * CRL modofication time heuristic inadvertently modified file name templates
77     (solves issue kindly reported by Elan Ruusamae)
78     * Expanded representation of tokenisation characters in strings to work
79     around bug in file(1) (rhbz#699546, works around RedHat Bugzilla 699548)
80    
81 davidg 2233 Changes in 3.0.6-1
82     ----------------------
83     * Response parsing disabled to suppress superfluous warning on unexpected
84     UTF-8 respons when retrieving a CRL (solves RedHat Bugzilla 688902)
85    
86 davidg 2188 Changes in 3.0.5-1
87     ----------------------
88     * CRLs for multiple similarly-named trust anchors might not all be downloaded.
89     This is fixed in this release.
90     * Spurious "restoreLogMode" internal errors are no longer raised
91    
92 davidg 2085 Changes in 3.0.4-1
93     ----------------------
94     * Add support for directory based drop-in configuration in /etc/fetch-crl.d/
95     * Only use cached CRL contents if the nextUpdate time of the cached CRL is
96     still in the future. This will ensure that a new download is attempted
97     each and everytime for CRLs that have already expired.
98    
99 davidg 1924 Changes in 3.0.3-1
100     ----------------------
101     * Clean up of man page format macro PU (reported by Mattias Ellert)
102    
103 davidg 1922 Changes in 3.0.2-1
104     ----------------------
105     * Clean up of man page format macro PU (reported by Mattias Ellert)
106    
107 davidg 1901 Changes in 3.0.1-1
108     ----------------------
109     * hunts through more places to find the latest successful CRL download to
110     set the latest local modification time for a CRL
111     (resolves a comparison error in case output and infodir are unset)
112    
113 davidg 1878 Changes in 3.0.0-0.RC4
114     ----------------------
115     * the config file name has changed to fetch-crl.conf, although a
116     fetch-crl.cnf file will also be used when present
117     * symlinked meta-data files can be ignored with the --nosymlinks option
118     (or nosymlinks in the configuration file). This allows fetch-crl to be
119     used effectively with new-format IGTF distribution before 1.37
120     * infinite loop for non-indexed CA file names fixed
121    
122 davidg 1758 Changes in fetch-crl 3.0
123     ------------------------
124     * fetch-crl 3.0 is a complete re-write, and shares no code with the 1.x and
125     2.x series utility of the same name, although the function and some of
126     the syntax is obviously the same
127    
128     * support for multiple output formats: OpenSSL 1 in dual-hash mode, specific
129     DER and PEM outputs, and NSS databases
130     * support for multiple CRLs for a single CA, allowing more than one CA with
131     the same subject name but different CLRs. Review your client software to see
132     if and how these CRLs are used.
133     * stateful retrieval helps reduce bandwidth usage by caching the CRLs locally
134     and respecting the Cache Control headers sent by the web server hosting the
135     CRL. This can reduce the number of downloads
136     * support for HEAD-only requests when state preservation is used (initially
137     only retrieve HTTP headers, and only if the CRL actually changed to a full
138     download)
139     * support for more CRL retrieval protocols (file:// and ftp://)
140     * ability to try site-local URLs first, before relying on the URLs shipped with
141     the trust anchor. This allows building an explicit local caching (web) server.
142     * ability to specify additional URLs to try in case the URLs shipped with the
143     trust anchor were not responsive. This allows for automatic fall-back to
144     (local or global) mirror services for CRL downloads
145     * warnings and errors can be suppressed on a per-trust anchor basis, to allow
146     silencing for particularly unstable trust anchors
147     * aging tolerance (the delay time before errors are generated in case downloads
148     consistently fail) can be configured on a per-trust anchor basis
149     * parallel downloading for multiple trust anchors
150     * minimized use of temporary files in the file system (now limited to the
151     invocation of OpenSSL only, and only for brief periods of time)
152     * dependencies on wget, lynx and other unix utilities have been removed
153     * explicit web proxy support (using LWP http proxies)
154     * completely re-written in perl, with some (hopefully minimal) dependencies:
155     LWP, Sys::Syslog, POSIX. And Data::Dumper (when debugging is enabled),
156     and IO::Select (if parallel downloads are enabled).
157    
158     Differences with respect to the previous versions
159    
160     * when downloading CRLs via https, the server certificate is not checked,
161     neither for the correct DNS name nor for being issued by a valid CA. Since
162     the CRL in itself is signed, this is not a security vulnerability. If
163     stricter checking is anyway desired, and the Crypt::SSLeay perl module has
164     been installed, set the HTTPS_CA_FILE environment variable before invoking
165     fetch-crl -- but keep in mind that the DNS name verification is limited
166     and will (incorrectly) reject DNS names if these are listed only in the
167     subjectAlternativeName of the server certificate
168     * Existing files with a name that matches a CRL target name are overwritten,
169     even if they did not originally contain CRL data. In v2 this was configurable
170     via the FORCE_OVERWRITE configuration setting. In version 3, files are
171     overwritten by default, and this can no longer be configured.
172     * fetch-crl3 will no longer check CA certificates for consistency or validity
173     by themselves, only retrieved CRLs are verified
174    
175     Downsides of the new version
176    
177     * it requires perl5 to be installed (tested with perl 5.8.0 and higher) with
178     libwww-perl, whereas version 2 only required a traditional Bourne shell
179     * requires a version of OpenSSL (0.9.5a or better) to be installed. Needs
180     OpenSSL 1.0.0 (at least beta5) for dual-hash support.
181     * when using parallel downloads, it can only run on pure-POSIX systems
182     * parallelism in combination with the NSS database output format is not tested
183     * Even when only the NSS database output format has been selected, OpenSSL is
184     still needed for verification and processing
185    
186    
187     ==============================================================================
188    
189     The change log below applies to the 1.x and 2.x series fetch-crl and is
190     included for historical purposes only. Fetch-crl3, with which this
191     changes file is being shipped, is a complete re-write of the utility.
192     Although a lot of backwards compatibility has been preserves, there have
193     been significant changes and the information below should NOT be used
194     to infer any behaviour of fetch-crl3.
195    
196     Fetch-crl 1.x and 2.x were released under the EU DataGrid License.
197    
198     Changes in version EGP 2.8.5
199     ----------------------------
200     (2010.06.03)
201    
202     * fetch-crl was occasionally leaving behind {hash}.r0.XXXXXX.r0 files
203     This has been fixed in this release (patch thanks to Jason Smith, BNL)
204     * man page was not compliant to Debian guidelines, this has been fixed
205     (patch thanks to Mattias Ellert, Uppsala University)
206    
207     Changes in version EGP 2.8.4
208     ----------------------------
209     (2010.04.04)
210    
211     * Fixes error when randomWait is not set [RH Bug 579488]
212    
213     Changes in version EGP 2.8.3
214     ----------------------------
215     (2010.03.28)
216    
217     * Preserve SELinux context for CRL files if SElinux status program exists
218     and selinux is enabled (RH bug 577403)
219     * Fix argument parsing on syslog facility specification (RH bug 577387)
220     * Increase granularity of the RandomWait and allow for 0 in -r option
221    
222     Changes in version EGP 2.8.2
223     ----------------------------
224     (2010.03.03)
225    
226     * Improved support for multiple CRL URLs by downloading until a success
227     is achieved, instead of downloading all of them
228     * Imported randomwait patch from Steve Traylen
229    
230     Changes in version EGP 2.8.1
231     ----------------------------
232     (2010.01.26)
233    
234     * The installed CRL file is re-checked for validity to catch file system
235     errors and local disk corruption. When possible, it will try to restore
236     a backup copy. Failures are not subject to aging tolerance.
237    
238     Changes in version EGP 2.8.0
239     ----------------------------
240     (2009.09.22)
241    
242     * The RPM packaging has been overhauled and is now sufficiently conformant
243     to EPEL and FedoraProject guidelines.
244     * New init scripts and a cron job entry have been added to allow management
245     of fetch-crl via the chkconfig mechanism
246    
247     These changes were contributed by Steve Traylen (CERN, Geneva, CH).
248    
249     Changes in version EGP 2.7.0
250     ----------------------------
251     (2009.01.25)
252    
253     * Warnings and errors are now counted. If there are errors in the download
254     or verification process for one or more CRLs, the exit status will be 1;
255     if there are errors in the local setup or in the script invocation, the
256     exit status will be 2.
257     * The installed CRLs no longer have the textual representation of the CRL,
258     but only the PEM data blob, thus reducing IO and memory requirements.
259     * the CRL aging threshold is now set by default to 24 hours. The previous
260     default was 0. The CRL aging threshold is set in the config file using
261     CRL_AGING_THRESHOLD=<xx>, or with the "-a" command-line argument.
262     * Default network timeouts reduced to 10 seconds (was 30) and retries to 2
263     * Added caching and conditional downloading. When CACHEDIR is set, the
264     original downloads are preserved and wget timestamping mode enabled.
265     When the content did not change, only the timestamp on the installed
266     CRL is updated. If SLOPPYCRLHASHES is set, the has is calculated based
267     on the name of the crl_url file, otherwise it is taken from the CRL itself.
268     - The CACHEDIR must be exclusively writable by the user running fetch-crl
269     - Setting CACHEDIR significantly reduced the bandwidth used by fetch-crl
270     * Added RESETPATHMODE setting in sysconfig. It defines whether or not to
271     set re-set $PATH to "/bin:/usr/bin" before start. The search for OpenSSL
272     may be done based on the old path.
273     yes=always replace; searchopenssl=search for openssl first and then reset;
274     no=keep original path, whatever that me be (may be empty if called from cron)
275     Default="yes". This replaces the hard-coded path in the tool!
276     * Hidden "FORCE_OVERWRITE" option now has a regular name. This is backwards-
277     compatible. Set FORCE_OVERWRITE=yes if you want files overwritten that
278     have a CRL-like name and ought to have CRL content, but currently do not.
279     * Addresses gLite Savannah bugs 28418 and 29559. Bug 27023 is partially
280     addressed. Bug 20062 can be remedied with WGET_OPTS arguments.
281     Addresses OSG ticket 4673.
282    
283     Changes in version EGP 2.6.6
284     ----------------------------
285     (2007.09.16)
286     (version 2.5.5 is invalid and was not publicly released)
287    
288     * Added obscure configuration parameter to allow overwriting of
289     arbitrary data files with a downloaded CRL (on request of
290     CERN, see https://savannah.cern.ch/bugs/index.php?29559)
291    
292     Changes in version EGP 2.6.4
293     ----------------------------
294     (2007.08.15)
295    
296     * Expired CA issuer certificate now gives a warning instead of an error
297     with the full verification result message
298     * additional logfile output target can be selected via the configuration file
299     * CRL aging threshold documented in manual page. Errors will now also be
300     generated in the CRL download failed consistently and the current CRL
301     has already expired
302    
303     Changes in version EGP 2.6.3
304     ----------------------------
305     (2006.11.13)
306    
307     * cron job example: fetch-crl invocation syntax error corrected
308    
309     Changes in version EGP 2.6.2
310     ----------------------------
311     (2006.10.27)
312    
313     * fixed bug: older wget versions do not recognise --no-check-certificate
314    
315     Changes in version EGP 2.6.1
316     ----------------------------
317     (2006.10.25)
318    
319     * fixed local timezone vs UTC error in LastUpdate CRL validation comparison
320     * fixed time comparison is the one-hour LastUpdate/download tolerance
321     (both fixes thanks to Alain Roy)
322     * added support for directory names containing whitespace
323     * added support for syslog reporting (via -f option or SYSLOGFACILITY directive)
324     * SERVERCERTCHECK=no is now the default. It can be reset via the configuration
325     file, or using the "--check-server-certificate" commandline option
326     * the main configuration file location (formerly fixed to be
327     /etc/sysconfig/fetch-crl) can now be set via the variable $FETCH_CRL_SYSCONFIG
328     * logfile format timestamp and tag have been normalised
329    
330     Changes in version EGP 2.6
331     --------------------------
332     (2006.05.20)
333    
334     * if the current local CRL has a lastUpdate time in the future, and the
335     newly downloaded CRL is older that the current one, allow the installation
336     of the newly downloaded CRL and issue a warning.
337     * added non-suppressable warning in case the newly downloaded CRL has a
338     lastUpdate time in the future, but install that CRL anyway (as the local
339     clock might have been wrong).
340    
341     Changes in version EGP 2.5
342     --------------------------
343     (2006.01.16)
344    
345     * added additional configuration arguments and configuration variables
346     to skip the server certificate check in wget
347     (to support https:// URLs where the server is authenticated with
348     a certificate that is not part of it's own trusted domain, such as
349     the KISTI URL)
350    
351     Changes in version EGP 2.4
352     --------------------------
353     (2005.11.15)
354    
355     * for those platforms that support the stat(1) command, and in case the
356     .crl_url file is named after the hash of the crl subject name to download,
357     error eporting for individual download errors can be suppressed for
358     a configurable amount of time as set via the "-a" option (unit: hours).
359    
360     Changes in version EGP 2.3
361     --------------------------
362     (2005.11.05)
363    
364     * do not replace recent CRLs with ones that have an older lastUpdate
365     timestamp (prevents ARP/DNS DoS attacks)
366    
367     Changes in version EGP 2.2
368     --------------------------
369     (2005.10.27)
370    
371     * secure http download by wget recognise the CAs in the trusted directory.
372     solves the issue described in the LCG bug tracking system
373     https://savannah.cern.ch/bugs/index.php?func=detailitem&item_id=12182
374    
375     Changes in version EGP 2.1
376     --------------------------
377     (2005.08.12)
378     * specifically look for the most recent version of OpenSSL. The
379     one in GLOBUS_LOCATION (which used to take precedence in the
380     previous releases) is outdated in many cases and caused
381     troubles on the LCG production systems in validating v2 CRLs
382     * added manual page fetch-crl(8)
383    
384     Changes in version EGP 2.0
385     --------------------------
386     (2005.02.28)
387     * name of the installed script changed to "fetch-crl"
388     * the cronjob script is no longer installed by default, but supplied
389     as an example in the %doc directory
390     * RPM is now relocatable (default install in /usr)
391     * READMA and CHANGES file now inclued in %doc tree
392     * make install now installs
393     * version increased to 2.0
394    
395     Changes in version EGP 1.9
396     --------------------------
397     (2005.02.24)
398     * the content of the final target CRL file is now checked for
399     containing a valid CRL if it already exists. If it does not
400     contain a CRL, an error is displayed and the file left untouched
401     So making the final ".r0" file in ${outdir} a link to something else
402     will not work, preventing an escalation in the final stage.
403    
404     Changes in version EGP 1.8
405     --------------------------
406     (changes from Fabio's version 1.7, 2005.02.24)
407    
408     * All temporary files (the initial CRL download using wget
409     and the PEM-converted version of that file) are now created using
410     mktemp
411     * the RetrieveFileByURL function will not overwrite files that
412     have any data in them
413     * Note that the script can be run by a non-priviledged user, but
414     that the output directory must be made writable by that user
415     in an out-of-band way.
416    
417     EDG version 1.7
418     ---------------
419     Imported with consent of Fabio Hernandez and Steve Traylen from
420     the original EDG repository.
421     The EU DataGrid License applies, see http://www.eu-datagrid.org/

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