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Contents of /nl.nikhef.pdp.fetchcrl/tags/fetch-crl-3.0.7-1/CHANGES

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Revision 2085 - (show annotations) (download)
Thu Nov 11 11:20:00 2010 UTC (11 years ago) by davidg
Original Path: trunk/fetchcrl/CHANGES
File size: 14961 byte(s)
Version 3.0.4, with CRL freshness check and more config o[ptions

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

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