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Revision 2694 - (hide annotations) (download)
Wed Mar 5 20:10:51 2014 UTC (7 years, 8 months ago) by davidg
File size: 17555 byte(s)
More feature rich init and cron scripts actually use the sysconfig file

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

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