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

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Revision 1922 - (show annotations) (download)
Sun Sep 19 13:21:05 2010 UTC (11 years, 2 months ago) by davidg
Original Path: trunk/fetchcrl/CHANGES
File size: 14523 byte(s)
Revoed Sanavvah bug 72495 from MattiasE


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

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