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Revision 2690 - (hide annotations) (download)
Tue Mar 4 16:26:06 2014 UTC (7 years, 8 months ago) by davidg
File size: 17116 byte(s)
Add rcmode option and no re-run of boot script (first version)

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

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