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============================================================================== |
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CHANGES to fetch-crl - the Certificate Revocation List retrieval tool |
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============================================================================== |
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The fetch-crl utility will retrieve certificate revocation lists (CRLs) for |
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a set of installed trust anchors, based on crl_url files or IGTF-style info |
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files. It will install these for use with OpenSSL, NSS or third-party tools. |
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|
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Changes in 3.0.2-1 |
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---------------------- |
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* Clean up of man page format macro PU (reported by Mattias Ellert) |
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|
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Changes in 3.0.1-1 |
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---------------------- |
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* hunts through more places to find the latest successful CRL download to |
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set the latest local modification time for a CRL |
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(resolves a comparison error in case output and infodir are unset) |
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|
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Changes in 3.0.0-0.RC4 |
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---------------------- |
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* the config file name has changed to fetch-crl.conf, although a |
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fetch-crl.cnf file will also be used when present |
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* symlinked meta-data files can be ignored with the --nosymlinks option |
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(or nosymlinks in the configuration file). This allows fetch-crl to be |
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used effectively with new-format IGTF distribution before 1.37 |
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* infinite loop for non-indexed CA file names fixed |
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|
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Changes in fetch-crl 3.0 |
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------------------------ |
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* fetch-crl 3.0 is a complete re-write, and shares no code with the 1.x and |
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2.x series utility of the same name, although the function and some of |
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the syntax is obviously the same |
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|
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* support for multiple output formats: OpenSSL 1 in dual-hash mode, specific |
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DER and PEM outputs, and NSS databases |
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* support for multiple CRLs for a single CA, allowing more than one CA with |
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the same subject name but different CLRs. Review your client software to see |
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if and how these CRLs are used. |
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* stateful retrieval helps reduce bandwidth usage by caching the CRLs locally |
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and respecting the Cache Control headers sent by the web server hosting the |
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CRL. This can reduce the number of downloads |
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* support for HEAD-only requests when state preservation is used (initially |
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only retrieve HTTP headers, and only if the CRL actually changed to a full |
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download) |
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* support for more CRL retrieval protocols (file:// and ftp://) |
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* ability to try site-local URLs first, before relying on the URLs shipped with |
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the trust anchor. This allows building an explicit local caching (web) server. |
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* ability to specify additional URLs to try in case the URLs shipped with the |
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trust anchor were not responsive. This allows for automatic fall-back to |
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(local or global) mirror services for CRL downloads |
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* warnings and errors can be suppressed on a per-trust anchor basis, to allow |
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silencing for particularly unstable trust anchors |
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* aging tolerance (the delay time before errors are generated in case downloads |
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consistently fail) can be configured on a per-trust anchor basis |
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* parallel downloading for multiple trust anchors |
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* minimized use of temporary files in the file system (now limited to the |
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invocation of OpenSSL only, and only for brief periods of time) |
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* dependencies on wget, lynx and other unix utilities have been removed |
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* explicit web proxy support (using LWP http proxies) |
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* completely re-written in perl, with some (hopefully minimal) dependencies: |
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LWP, Sys::Syslog, POSIX. And Data::Dumper (when debugging is enabled), |
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and IO::Select (if parallel downloads are enabled). |
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|
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Differences with respect to the previous versions |
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|
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* when downloading CRLs via https, the server certificate is not checked, |
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neither for the correct DNS name nor for being issued by a valid CA. Since |
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the CRL in itself is signed, this is not a security vulnerability. If |
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stricter checking is anyway desired, and the Crypt::SSLeay perl module has |
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been installed, set the HTTPS_CA_FILE environment variable before invoking |
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fetch-crl -- but keep in mind that the DNS name verification is limited |
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and will (incorrectly) reject DNS names if these are listed only in the |
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subjectAlternativeName of the server certificate |
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* Existing files with a name that matches a CRL target name are overwritten, |
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even if they did not originally contain CRL data. In v2 this was configurable |
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via the FORCE_OVERWRITE configuration setting. In version 3, files are |
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overwritten by default, and this can no longer be configured. |
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* fetch-crl3 will no longer check CA certificates for consistency or validity |
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by themselves, only retrieved CRLs are verified |
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|
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Downsides of the new version |
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|
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* it requires perl5 to be installed (tested with perl 5.8.0 and higher) with |
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libwww-perl, whereas version 2 only required a traditional Bourne shell |
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* requires a version of OpenSSL (0.9.5a or better) to be installed. Needs |
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OpenSSL 1.0.0 (at least beta5) for dual-hash support. |
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* when using parallel downloads, it can only run on pure-POSIX systems |
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* parallelism in combination with the NSS database output format is not tested |
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* Even when only the NSS database output format has been selected, OpenSSL is |
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still needed for verification and processing |
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|
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|
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============================================================================== |
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|
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The change log below applies to the 1.x and 2.x series fetch-crl and is |
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included for historical purposes only. Fetch-crl3, with which this |
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changes file is being shipped, is a complete re-write of the utility. |
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Although a lot of backwards compatibility has been preserves, there have |
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been significant changes and the information below should NOT be used |
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to infer any behaviour of fetch-crl3. |
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|
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Fetch-crl 1.x and 2.x were released under the EU DataGrid License. |
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|
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Changes in version EGP 2.8.5 |
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---------------------------- |
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(2010.06.03) |
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|
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* fetch-crl was occasionally leaving behind {hash}.r0.XXXXXX.r0 files |
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This has been fixed in this release (patch thanks to Jason Smith, BNL) |
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* man page was not compliant to Debian guidelines, this has been fixed |
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(patch thanks to Mattias Ellert, Uppsala University) |
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|
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Changes in version EGP 2.8.4 |
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---------------------------- |
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(2010.04.04) |
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|
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* Fixes error when randomWait is not set [RH Bug 579488] |
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|
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Changes in version EGP 2.8.3 |
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---------------------------- |
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(2010.03.28) |
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|
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* Preserve SELinux context for CRL files if SElinux status program exists |
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and selinux is enabled (RH bug 577403) |
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* Fix argument parsing on syslog facility specification (RH bug 577387) |
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* Increase granularity of the RandomWait and allow for 0 in -r option |
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|
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Changes in version EGP 2.8.2 |
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---------------------------- |
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(2010.03.03) |
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|
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* Improved support for multiple CRL URLs by downloading until a success |
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is achieved, instead of downloading all of them |
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* Imported randomwait patch from Steve Traylen |
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|
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Changes in version EGP 2.8.1 |
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---------------------------- |
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(2010.01.26) |
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|
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* The installed CRL file is re-checked for validity to catch file system |
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errors and local disk corruption. When possible, it will try to restore |
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a backup copy. Failures are not subject to aging tolerance. |
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|
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Changes in version EGP 2.8.0 |
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---------------------------- |
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(2009.09.22) |
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|
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* The RPM packaging has been overhauled and is now sufficiently conformant |
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to EPEL and FedoraProject guidelines. |
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* New init scripts and a cron job entry have been added to allow management |
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of fetch-crl via the chkconfig mechanism |
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|
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These changes were contributed by Steve Traylen (CERN, Geneva, CH). |
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|
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Changes in version EGP 2.7.0 |
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---------------------------- |
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(2009.01.25) |
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|
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* Warnings and errors are now counted. If there are errors in the download |
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or verification process for one or more CRLs, the exit status will be 1; |
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if there are errors in the local setup or in the script invocation, the |
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exit status will be 2. |
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* The installed CRLs no longer have the textual representation of the CRL, |
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but only the PEM data blob, thus reducing IO and memory requirements. |
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* the CRL aging threshold is now set by default to 24 hours. The previous |
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default was 0. The CRL aging threshold is set in the config file using |
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CRL_AGING_THRESHOLD=<xx>, or with the "-a" command-line argument. |
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* Default network timeouts reduced to 10 seconds (was 30) and retries to 2 |
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* Added caching and conditional downloading. When CACHEDIR is set, the |
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original downloads are preserved and wget timestamping mode enabled. |
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When the content did not change, only the timestamp on the installed |
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CRL is updated. If SLOPPYCRLHASHES is set, the has is calculated based |
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on the name of the crl_url file, otherwise it is taken from the CRL itself. |
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- The CACHEDIR must be exclusively writable by the user running fetch-crl |
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- Setting CACHEDIR significantly reduced the bandwidth used by fetch-crl |
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* Added RESETPATHMODE setting in sysconfig. It defines whether or not to |
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set re-set $PATH to "/bin:/usr/bin" before start. The search for OpenSSL |
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may be done based on the old path. |
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yes=always replace; searchopenssl=search for openssl first and then reset; |
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no=keep original path, whatever that me be (may be empty if called from cron) |
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Default="yes". This replaces the hard-coded path in the tool! |
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* Hidden "FORCE_OVERWRITE" option now has a regular name. This is backwards- |
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compatible. Set FORCE_OVERWRITE=yes if you want files overwritten that |
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have a CRL-like name and ought to have CRL content, but currently do not. |
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* Addresses gLite Savannah bugs 28418 and 29559. Bug 27023 is partially |
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addressed. Bug 20062 can be remedied with WGET_OPTS arguments. |
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Addresses OSG ticket 4673. |
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|
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Changes in version EGP 2.6.6 |
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---------------------------- |
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(2007.09.16) |
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(version 2.5.5 is invalid and was not publicly released) |
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|
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* Added obscure configuration parameter to allow overwriting of |
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arbitrary data files with a downloaded CRL (on request of |
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CERN, see https://savannah.cern.ch/bugs/index.php?29559) |
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|
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Changes in version EGP 2.6.4 |
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---------------------------- |
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(2007.08.15) |
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|
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* Expired CA issuer certificate now gives a warning instead of an error |
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with the full verification result message |
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* additional logfile output target can be selected via the configuration file |
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* CRL aging threshold documented in manual page. Errors will now also be |
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generated in the CRL download failed consistently and the current CRL |
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has already expired |
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|
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Changes in version EGP 2.6.3 |
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---------------------------- |
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(2006.11.13) |
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|
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* cron job example: fetch-crl invocation syntax error corrected |
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|
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Changes in version EGP 2.6.2 |
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---------------------------- |
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(2006.10.27) |
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|
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* fixed bug: older wget versions do not recognise --no-check-certificate |
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|
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Changes in version EGP 2.6.1 |
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---------------------------- |
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(2006.10.25) |
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|
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* fixed local timezone vs UTC error in LastUpdate CRL validation comparison |
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* fixed time comparison is the one-hour LastUpdate/download tolerance |
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(both fixes thanks to Alain Roy) |
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* added support for directory names containing whitespace |
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* added support for syslog reporting (via -f option or SYSLOGFACILITY directive) |
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* SERVERCERTCHECK=no is now the default. It can be reset via the configuration |
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file, or using the "--check-server-certificate" commandline option |
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* the main configuration file location (formerly fixed to be |
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/etc/sysconfig/fetch-crl) can now be set via the variable $FETCH_CRL_SYSCONFIG |
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* logfile format timestamp and tag have been normalised |
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|
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Changes in version EGP 2.6 |
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-------------------------- |
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(2006.05.20) |
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|
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* if the current local CRL has a lastUpdate time in the future, and the |
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newly downloaded CRL is older that the current one, allow the installation |
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of the newly downloaded CRL and issue a warning. |
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* added non-suppressable warning in case the newly downloaded CRL has a |
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lastUpdate time in the future, but install that CRL anyway (as the local |
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clock might have been wrong). |
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|
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Changes in version EGP 2.5 |
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-------------------------- |
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(2006.01.16) |
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|
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* added additional configuration arguments and configuration variables |
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to skip the server certificate check in wget |
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(to support https:// URLs where the server is authenticated with |
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a certificate that is not part of it's own trusted domain, such as |
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the KISTI URL) |
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|
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Changes in version EGP 2.4 |
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-------------------------- |
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(2005.11.15) |
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|
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* for those platforms that support the stat(1) command, and in case the |
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.crl_url file is named after the hash of the crl subject name to download, |
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error eporting for individual download errors can be suppressed for |
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a configurable amount of time as set via the "-a" option (unit: hours). |
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|
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Changes in version EGP 2.3 |
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-------------------------- |
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(2005.11.05) |
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|
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* do not replace recent CRLs with ones that have an older lastUpdate |
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timestamp (prevents ARP/DNS DoS attacks) |
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|
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Changes in version EGP 2.2 |
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-------------------------- |
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(2005.10.27) |
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|
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* secure http download by wget recognise the CAs in the trusted directory. |
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solves the issue described in the LCG bug tracking system |
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https://savannah.cern.ch/bugs/index.php?func=detailitem&item_id=12182 |
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|
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Changes in version EGP 2.1 |
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-------------------------- |
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(2005.08.12) |
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* specifically look for the most recent version of OpenSSL. The |
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one in GLOBUS_LOCATION (which used to take precedence in the |
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previous releases) is outdated in many cases and caused |
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troubles on the LCG production systems in validating v2 CRLs |
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* added manual page fetch-crl(8) |
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|
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Changes in version EGP 2.0 |
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-------------------------- |
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(2005.02.28) |
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* name of the installed script changed to "fetch-crl" |
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* the cronjob script is no longer installed by default, but supplied |
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as an example in the %doc directory |
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* RPM is now relocatable (default install in /usr) |
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* READMA and CHANGES file now inclued in %doc tree |
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* make install now installs |
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* version increased to 2.0 |
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|
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Changes in version EGP 1.9 |
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-------------------------- |
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(2005.02.24) |
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* the content of the final target CRL file is now checked for |
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containing a valid CRL if it already exists. If it does not |
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contain a CRL, an error is displayed and the file left untouched |
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So making the final ".r0" file in ${outdir} a link to something else |
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will not work, preventing an escalation in the final stage. |
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|
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Changes in version EGP 1.8 |
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-------------------------- |
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(changes from Fabio's version 1.7, 2005.02.24) |
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|
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* All temporary files (the initial CRL download using wget |
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and the PEM-converted version of that file) are now created using |
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mktemp |
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* the RetrieveFileByURL function will not overwrite files that |
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have any data in them |
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* Note that the script can be run by a non-priviledged user, but |
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that the output directory must be made writable by that user |
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in an out-of-band way. |
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|
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EDG version 1.7 |
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--------------- |
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Imported with consent of Fabio Hernandez and Steve Traylen from |
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the original EDG repository. |
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The EU DataGrid License applies, see http://www.eu-datagrid.org/ |
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