- Announcing Privoxy 3.0.28 stable
+ Announcing Privoxy 3.0.29 stable
--------------------------------------------------------------------
-Privoxy 3.0.27 stable scales better in multi-user environments
-and brings a couple of tuning directives.
-
-Privoxy 3.0.28 stable fixes two regressions introduced in 3.0.27.
+Privoxy 3.0.29 stable fixes a couple of memory leaks and introduces
+https inspection which allows to filter encrypted requests and
+responses.
--------------------------------------------------------------------
-ChangeLog for Privoxy 3.0.28
+ChangeLog for Privoxy 3.0.29
--------------------------------------------------------------------
-- Bug fixes for regressions in 3.0.27:
- - Fixed misplaced parentheses.
- Reported by David Binderman.
- - Changed two regression tests to depend on config directive
- enable-remote-toggle instead of FEATURE_TOGGLE.
---------------------------------------------------------------------
-ChangeLog for Privoxy 3.0.27
---------------------------------------------------------------------
-- General improvements:
- - Add a receive-buffer-size directive which can be used to
- set the size of the previously statically allocated buffer
- in handle_established_connection().
- Increasing the buffer size increases Privoxy's memory usage but
- can lower the number of context switches and thereby reduce the
- CPU usage and potentially increase the throughput.
- This is mostly relevant for fast network connections and
- large downloads that don't require filtering.
+- Security/Reliability:
+ - Fixed memory leaks when a response is buffered and the buffer
+ limit is reached or Privoxy is running out of memory.
+ Commits bbd53f1010b and 4490d451f9b. OVE-20201118-0001.
Sponsored by: Robert Klemme
- - Add a listen-backlog directive which specifies the backlog
- value passed to listen().
+ - Fixed a memory leak in the show-status CGI handler when
+ no action files are configured. Commit c62254a686.
+ OVE-20201118-0002.
Sponsored by: Robert Klemme
- - Add an enable-accept-filter directive which allows to
- toggle accept filter support at run time when compiled
- with FEATURE_ACCEPT_FILTER support.
- It makes testing more convenient and now that it's
- optional we can emit an error message if enabling
- the accept filter fails.
+ - Fixed a memory leak in the show-status CGI handler when
+ no filter files are configured. Commit 1b1370f7a8a.
+ OVE-20201118-0003.
Sponsored by: Robert Klemme
- - Add a delay-response{} action.
- This is useful to tar pit JavaScript requests that
- are endlessly retried in case of blocks. It can also
- be used to simulate a slow Internet connection.
+ - Fixes a memory leak when client tags are active.
+ Commit 245e1cf32. OVE-20201118-0004.
Sponsored by: Robert Klemme
- - Add a 'trusted-cgi-referrer' directive.
- It allows to configure another page or site that can be used
- to reach sensitive CGI resources.
+ - Fixed a memory leak if multiple filters are executed
+ and the last one is skipped due to a pcre error.
+ Commit 5cfb7bc8fe. OVE-20201118-0005.
+ - Prevent an unlikely dereference of a NULL-pointer that
+ could result in a crash if accept-intercepted-requests
+ was enabled, Privoxy failed to get the request destination
+ from the Host header and a memory allocation failed.
+ Commit 7530132349. CID 267165. OVE-20201118-0006.
+ - Fixed memory leaks in the client-tags CGI handler when
+ client tags are configured and memory allocations fail.
+ Commit cf5640eb2a. CID 267168. OVE-20201118-0007.
+ - Fixed memory leaks in the show-status CGI handler when memory
+ allocations fail. Commit 064eac5fd0 and commit fdee85c0bf3.
+ CID 305233. OVE-20201118-0008.
+
+- General improvements:
+ - Added experimental https inspection support which allows to filter
+ https traffic. To enable it, install MbedTLS and configure with
+ --with-mbedtls, or install OpenSSL or LibreSSL and configure
+ with --with-openssl.
+ Afterwards configure the directives in section 7 of the
+ config file and enable the +https-inspection action.
+ Initial MbedTLS-based code contributed by Vaclav Svec,
+ initial OpenSSL support contributed by Maxim Antonov.
+ With help from Nedzad Hrnjica and Ho+ Ho+ Ho+.
+ Integration and improvements sponsored by Robert Klemme.
+ - pcrs: Request JIT compilation if it's supported and
+ the filter isn't dynamic. This can speed up filtering.
+ - Added support for Brotli decompression.
Sponsored by: Robert Klemme
- - Add a --fuzz mode which exposes Privoxy internals to input
- from files or stdout.
- Mainly tested with American Fuzzy Lop. For details see:
- https://www.fabiankeil.de/talks/fuzzing-on-freebsd/
- This work was partially funded with donations and done
- as part of the Privoxy month in 2015.
- - Consistently use the U(ngreedy) flag in the 'img-reorder' filter.
- - listen_loop(): Reuse a single thread attribute object
- The object doesn't change and creating a new one for
- every thread is a waste of (CPU) time.
+ - Added FEATURE_EXTENDED_STATISTICS to gather statistics for
+ block reasons and filter executions. To enable it, configure
+ with --enable-extended-statistics and visit
+ http://config.privoxy.org/show-status.
Sponsored by: Robert Klemme
- - Free csp resources in the thread that belongs to the csp instead
- of the main thread which has enough on its plate already.
+ - Use the IP_FREEBIND socket option, if defined. This allows
+ Privoxy to bind to not-yet assigned IP addresses which is
+ useful in failover environments.
+ Patch by Sam Varshavchik.
+ - Allow to use extended host patterns and vanilla host patterns
+ at the same time by prefixing extended host patterns with
+ "PCRE-HOST-PATTERN:". To enable this, configure with
+ --enable-pcre-host-patterns.
Sponsored by: Robert Klemme
- - Improve 'socket timeout reached' message.
- Log the timeout that was triggered and downgrade the
- log level to LOG_LEVEL_CONNECT to reduce the log noise
- with common debug settings.
- The timeout isn't necessary the result of an error and
- usually merely indicates that Privoxy's socket timeout
- is lower than the relevant timeouts used by client and
- server.
+ - Added "Cross-origin resource sharing" (CORS) support.
+ This allows to access Privoxy's CGI interface via JavaScript from
+ another domain (white-listed with the new cors-allowed-origin directive).
+ Based on a patch by Nedzad Hrnjica.
+ Sponsored by: Robert Klemme.
+ - Add SOCKS5 username/password support.
+ Based on a patch by Sam, improved by Ivan Romanov.
+ Closes Patch#141 and solves TODO#105.
+ - Bump the maximum number of action and filter files
+ to 100 each.
Sponsored by: Robert Klemme
- - Explicitly taint the server socket in case of CONNECT requests.
- This doesn't fix any known problems, but makes
- some log messages less confusing.
- - Let write_pid_file() terminate if the pid file can't be opened.
- Logging the issue at info level is unlikely to help.
- - log_error(): Reduce the mutex-protected area by not using a
- heap-allocated buffer that is shared between all threads.
- This increases performance and reduces the latency with
- verbose debug settings and multiple concurrent connections.
+ - Fixed handling of filters with "split-large-forms 1"
+ when using the CGI editor.
+ Reported by withoutname in #921.
+ - Better detect a mismatch of connection details when
+ figuring out whether or not a connection can be reused.
+ - Don't send a "Connection failure" message instead of the
+ "DNS failure" message.
Sponsored by: Robert Klemme
- - Let zalloc() use calloc() if it's available.
- In some situations using calloc() can be faster than
- malloc() + memset() and it should never be slower.
- In the real world the impact of this change is not
- expected to be noticeable.
+ - Let LOG_LEVEL_REQUEST log all requests. Previously unencrypted
+ requests were only logged with LOG_LEVEL_REQUEST when they weren't
+ crunched (in which case they were logged with LOG_LEVEL_CRUNCH).
+ This was documented behaviour, but logging all requests seems more useful.
+ - Fixed locking around localtime() and gmtime().
+ - Removed OS/2 support. We haven't provided OS/2 packages in years,
+ it complicated the code and it depended on a fallback snprintf()
+ implementation which is GPLv2 only.
+ - Remove the fallback snprintf() implementation
+ Now that OS/2 support is gone we no longer need it.
+ - Fixed a bunch of format specifiers log messages.
+ - Added a missing apostrophe in the 'More Privoxy' menu.
+ - Explicitly prevent use of FEATURE_CONNECTION_SHARING
+ without FEATURE_CONNECTION_KEEP_ALIVE. It makes no sense
+ and does not compile anyway.
Sponsored by: Robert Klemme
- - Never use select() when poll() is available.
- On most platforms select() is limited by FD_SETSIZE while
- poll() is not. This was a scaling issue for multi-user setups.
- Using poll() has no downside other than the usual risk
- that code modifications may introduce new bugs that have
- yet to be found and fixed.
- At least in theory this commit could also reduce the latency
- when there are lots of connections and select() would use
- "bit fields in arrays of integers" to store file descriptors.
- Another side effect is that Privoxy no longer has to stop
- monitoring the client sockets when pipelined requests are
- waiting but can't be read yet.
- This code keeps the select()-based code behind ifdefs for
- now but hopefully it can be removed soonish to make the
- code more readable.
+ - Fix build without FEATURE_CONNECTION_KEEP_ALIVE.
Sponsored by: Robert Klemme
- - Add a 'reproducible-tarball-dist' target.
- It's currently separate from the "tarball-dist" target
- because it requires a tar implementation with mtree spec
- support.
- It's far from being perfect and does not enforce a
- reproducible mode, but it's better than nothing.
- - Use arc4random() if it's available.
- While Privoxy doesn't need high quality pseudo-random numbers
- there's no reason not to use them when we can and this silences
- a warning emitted by code checkers that can't tell whether or not
- the quality matters.
- - Show the FEATURE_EXTERNAL_FILTERS status on the status page.
- Better late than never. Previously a couple of tests weren't
- executed as Privoxy-Regression-Test couldn't detect that the
- FEATURE_EXTERNAL_FILTERS dependency was satisfied.
- - Ditch FEATURE_IMAGE_DETECT_MSIE.
- It's an obsolete workaround we inherited from Junkbuster
- and was already disabled by default.
- Users that feel the urge to work around issues with
- image requests coming from an Internet Explorer version
- from more than 15 years ago can still do this using tags.
- - Consistently use strdup_or_die() instead of strdup() in
- cases where allocation failures aren't expected.
- Using strdup_or_die() allows to remove a couple of explicit
- error checks which slightly reduces the size of the binary.
- - Insert a refresh tag into the /client-tags CGI page when
- serving it while a client-specific tag is temporarily enabled.
- This makes it less likely that the user ends up
- looking at tag state that is out of date.
- - Use absolute URLs in the client-tag forms.
- It's more consistent with the rest of the CGI page
- URLs and makes it more convenient to copy the forms
- to external pages.
- - cgi_error_disabled(): Use status code 403 and an appropriate response line
- - Use a dedicated CGI handler to deal with tag-toggle requests
- As a result the /client-tags page is now safe to reach without
- trusted Referer header which makes bookmarking or linking to
- it more convenient.
- Finally, refreshing the /client-tags page to show the
- current state can no longer unintentionally repeat the
- previous toggle request.
- - Don't add a "Connection" header for CONNECT requests.
- Explicitly sending "Connection: close" is not necessary and
- apparently it causes problems with some forwarding proxies
- that will close the connection prematurely.
- Reported by Marc Thomas.
- - Fix compiler warnings.
-
-- Bug fixes:
- - rfc2553_connect_to(): Properly detect and log when poll()
- reached the time out. Previously this was logged as:
- Could not connect to [...]: No error: 0.
- which isn't very helpful.
+ - Downgrade the 'Graceful termination requested' message
+ to LOG_LEVEL_INFO as it isn't an error.
Sponsored by: Robert Klemme
- - add_tag_for_client(): Set time_to_live properly.
- Previously the time_to_live was always set for the first tag.
- Attempts to temporarily enable a tag would result in enabling
- it permanently unless no tag was enabled already.
- - Revert r1.165 which didn't perform as advertised.
- While the idea was to use "https:// when creating links
- for the user manual on the website", the actual effect
- was to use "https://" when Privoxy was supposed to serve
- the user manual itself.
- Reported by Yossi Zahn on Privoxy-devel@.
- - socks5_connect(): Fail in case of unsupported address types.
- Previously they would not be detected right away and
- Privoxy would fail later on with an error message that
- didn't make it obvious that the problem was socks-related.
- So far, no such problems have actually been reported.
- - socks5_connect(): Properly deal with socks replies that
- contain IPv6 addresses.
- Previously parts of the reply were left unread and
- later on treated as invalid HTTP response data.
- Fixes #904 reported by Danny Goossen who also provided
- the initial version of this patch.
+ - decompress_iob(): Downgrade the no-content message to LOG_LEVEL_RE_FILTER
+ While at it, fix a typo in a comment.
+ Sponsored by: Robert Klemme
+ - Fixed a couple of cppcheck warnings.
+ - Rename LOG_LEVEL_GPC to LOG_LEVEL_REQUEST.
+ Only the shadow knows what "GPC" is supposed to stand for.
+ - Remove SourceForge references in copyright headers.
+ - Upgrade a bunch of links to the homepage to https://.
+ - Add 'no-brotli-accepted' filter which prevents the
+ use of Brotli compression.
+ - Changed license for pcrs to GPLv2+ after getting the
+ permission from Andreas. This allows to redistribute
+ Privoxy under the GPLv3 which is required when linking
+ to future mbedTLS versions which are expected to be
+ licensed under the Apache 2.0 license only.
+ - Updated a bunch of tests that have to expect status code 403
+ now after r1.168/070e904afa5.
+ - Lowercase the host name in the request line.
+ - Only set SOURCE_DATE_EPOCH if it's not already set so
+ distributions can overwrite it through the environment.
+
+- Documentation changes:
+ - Explain that Privoxy has to be distributed under the
+ GPLv3 (or later) when linked with an MbedTLS version
+ that is licensed under the Apache 2.0 license.
+ - Import the GNU GPLv3 and include it the user manual.
+ - Clarify FEATURE_FORCE_LOAD's description. It allows to bypass
+ blocking not filtering and only does it if blocks aren't enforced.
+ Reported by: Robert Klemme
+ - FAQ: Remove Zwiebelfreunde e.V. from the list of fiduciary sponsors
+ As of 2021 they no longer handle donations for foreign organisations
+ due to lack of resources.
+ - FAQ: Remove an obsolete comment with a link to the long-gone PDF manual.
+ - FAQ: Add a link to the TODO list.
+ - FAQ: Change the sponsor amounts to USD slightly rounding the
+ converted amounts up to get simple numbers.
+ Receiving USD is apparently easier for SPI and SPI is
+ preferred by sponsors as they can send invoices.
+ - Advertise the client-tags CGI page in the user manual.
+ - Stop advertising the show-version CGI page which no longer exists.
+ - Add yet another reason why +prevent-compression may cause problems.
+ - Don't claim that contributors need ssh. It's only needed for committers.
+ - Replace obsolete CVS instructions with Git instructions.
+ - Remove an obsolete comment
+
+- Config file changes:
+ - Change the suggested default-server-timeout to 5 to match the
+ suggested keep-alive-timeout. Otherwise using the defaults would
+ result in Privoxy reducing the default-server-timeout and logging
+ an error message.
+ Sponsored by: Robert Klemme
+ - Update the 'debug 1' description.
+ - Add a missing 'client-specific-tag' directive.
+ - Comment out trusted-cgi-referer pointing to example.org.
- Action file improvements:
- - Unblock 'msdn.microsoft.com/'.
- It (presumably) isn't used to serve the kind of ads Privoxy should
- block by default but happens to serve lots of pages with URLs that
- are likely to result in false positives.
- Reported by bugreporter1694 in AF#939.
- - Disable gif deanimation for requests tagged with CSS-REQUEST.
- The action will ignore content that isn't considered text
- anyway and explicitly disabling it makes this more obvious
- if "action" debugging (debug 65536) is enabled while
- "gif deanimation" debugging (debug 256) isn't.
- - Explicitly disable HTML filters for requests with CSS-REQUEST tag.
- The filters are unlikely to break CSS files but executing
- them without (intentionally) getting any hits is a waste of
- cpu time and makes the log more noisy when running with
- "debug 64".
- - Unblock 'adventofcode.com/'.
- Reported by Clint Adams in Debian bug #848211.
- Fixes Roland's AF#937.
- - Unblock 'adlibris.com'.
- Reported by Wyrex in #935
- - Unblock .golang.org/
- - Add fast-redirects exception for '.youtube.com/.*origin=http'
+ - Block requests to /(.*/)?piwik\.php
+ - Block requests to .connectaserver.de/
+ - Block requests to pixel.inforsea.com/
+ - Block requests to t.vi-serve.com/
+ - Block requests to .ioam.de/
+ - Block requests to t.9gag.com/img.gif
+ - Block requests to .pixel.parsely.com/ as image
+ - Block requests to pixel.wp.com/
+ - Disable fast-redirects for .librarything.com/
+ - Disable fast-redirects for issue.freebsdfoundation.org/
+ - Disable fast-redirects for .twitter.com/.*origin=http
+ - Unblock belco24.de/
+ - Add fast-redirects exception for .wikipedia.org/
+ - Add fast-redirects exception for oss-fuzz.com/
+ - Disable fast-redirects for .consensu.org/delivery/pixel\.php
+ and block the requests as image instead
+ - Unblock .adbinstaller.com/
+ Reported by lvm in #942.
+ - Unblock .adbshell.com
+ Reported by lvm in #942.
+ - Unblock .tagesschau.de/
+ - Disable fast-redirects for collector.githubapp.com/
+ and block requests to it as image instead
+ - Unblock 'ada*.'
+ - Add fast-redirects{} exception for sourcepoint.vice.com/
+ - Unblock adaway.org/
+ Reported by DRS David Soft in AF#945.
+ - Change two block reasons that previously were the same.
+ Sponsored by: Robert Klemme
+ - Added a +delay-response{} test.
+ - Updated the location of the development version
+ of default.action.master.
- Privoxy-Log-Parser:
- - Don't gather host and resource statistics if they aren't requested.
- While the performance impact seems negligible this significantly
- reduces the memory usage if there are lots of requests.
- - Bump version as the behaviour (slightly) changed.
- - Count connection failures as well in statistics mode.
+ - Added a --keep-date option to keep the date in highlighted messages.
+ - Highlight new log messages.
+ - Make gather_loglevel_clf_stats() more tolerant. While at it,
+ count all CLF messages as requests, even if the request is invalid.
+ - Only show HTTP version distribution if at least one version has been detected.
+ - Only show crunch statistics if crunches were detected.
+ - Warn if the request counts differ.
+ - Generate statistics if the log only contains LOG_LEVEL_CLF messages
+ so it can be used with vanilla webserver logs.
+ Previously Privoxy-specific "Request:" messages were required.
+ - Align the client-HTTP-version distribution like other distributions
+ - Bump version to 0.9.1
+ - Include status code distribution in the stats.
+ - Let the statistics include the size of the content Privoxy
+ transferred excluding HTTP headers.
+ - Get with the program and expect all requests to be logged with LOG_LEVEL_REQUEST.
+ It's no longer necessary to count both LOG_LEVEL_REQUEST and
+ LOG_LEVEL_CRUNCH messages to get the total number of requests.
+ - Leverage the LOG_LEVEL_CLF message to gather statistics that where
+ previously taken from LOG_LEVEL_HEADER lines. This results in less
+ confusing results if https inspection is enabled in which case there
+ are two LOG_LEVEL_HEADER lines with request lines.
Sponsored by: Robert Klemme
- - Count connection timeouts as well in statistics mode.
+ - Properly highlight the filter results message. Previously a brace got lost.
+ - Prefer the number of CLF lines to get the total number of requests
+ as it works with older Privoxy versions as well.
+
+- Privoxy-Regression-Test:
+ - Turn curl's globbing mode off so we can allow more characters in URLs.
+ - Allow '[' and ']' in URLs.
+ - Include the action file when complaining about missing Sticky Actions.
+ - Fix a sentence in the documentation.
+ - Bump version to 0.7.1
+
+- url-pattern-translator:
+ - Detect a couple of pattern prefixes case-insensitively.
+ Sponsored by: Robert Klemme
+ - Skip CLIENT-TAG patterns.
+ Sponsored by: Robert Klemme
+ - Skip patterns that have already been converted.
+ It should now be safe to "convert" a file multiple times.
+ Sponsored by: Robert Klemme
+ - Add the new 'PCRE-HOST-PATTERN:' prefix.
Sponsored by: Robert Klemme
- - Fix an 'uninitialized value' warning when generating
- statistics for a log file without response headers.
- While privoxy-log-parser was supposed to detect this already,
- the check was flawed and the message the user didn't see was
- somewhat confusing anyway.
- Now the message is less confusing, more helpful and actually printed.
- Reported by: Robert Klemme
-- Documentation improvements:
- - Refer to the git sources instead of CVS.
- - Use GNU/Linux when referring to the OS instead of the kernel.
- - Add FAQ entry for what to do if editing the config file is access denied.
- - Add brief HTTP/2 FAQ.
- - Add a small fuzzing section to the developer documentation.
- - Add a client-header-tagger{client-ip-address} example.
- - Stop suggesting that Privoxy is an anonymizing proxy.
- The term could lead to Privoxy users overestimating
- what it can do on its own (without Tor).
- - Make it more obvious that SPI accepts Paypal, too.
- Currently most donations are made through the Paypal account
- managed by Zwiebelfreunde e.V. and a more even distribution
- would be useful.
- - Suggest to log applying actions as well when reproducing problems.
- - Explicitly mention that Privoxy binaries are built by individuals
- on their own systems. Buyer beware!
- - Mention the release feed on the homepage.
- - Remove a mysterious comment with a GNU FDL link as it isn't
- useful and could confuse license scanners.
- In May 2002 it was briefly claimed that "this document" was covered
- by the GNU FDL. The commit message (r1.5) doesn't explain the motivation
- or whether all copyright holders were actually asked and agreed to the
- declared license change.
- It's thus hard to tell whether or not the license change was legit,
- but luckily two days later the "doc license" was "put" "back to GPL"
- anyway (r1.6).
- At the same time the offending comment with a link to the FDL
- (not the GPL) was added for no obvious reason.
- Now it's gone again.
-
-- Regression tests:
- - Bump for-privoxy-version to 3.0.27 as we now rely on untrusted
- CGI request being rejected with status code 403 (instead of 200).
- - Update test for /send-stylesheet and add another one
-
-- Templates:
- - Consistently use https:// when linking to the Privoxy website.
- - Remove SourceForge references in Copyright header.
- - Remove a couple of SourceForge references in a comment.
- While at it, fix the grammar.
- - Move the site-specific documentation block before the generic one.
- While most Privoxy installations don't have a site-specific
- documentation block, in cases were it exists it's likely to
- be more relevant than the generic one.
- Showing it first makes it less likely that users stop reading
- before they reach it, especially on pages that don't fit on
- the screen.
-
-- Build system improvements:
- - Prefer openjade to jade. On some systems Jade produces
- HTML with unescaped ampersands in URLs.
- - Prefer OpenSP to SP to be consistent.
- - Have Docbook generated HTML files be straight ASCII.
- Dealing with a mixture of ISO-8859 and UTF-8 files is problematic.
- - Echo the filename to stderr for 'make dok-tidy'.
- Make it a bit easier to find errors in docbook generated HTML.
- - Warn when still using select().
- - Warn when compiling without calloc().
- - Make it more obvious that the --with-fdsetsize configure switch
- is pointless if poll() is available.
- - Remove support for AmigaOS.
- - Update windows build system to use supported software.
- The cygwin gcc -mno-cygwin option is no longer supported, so
- convert the windows build system to use the cygwin cross-compiler
- to build "native" code.
- - Add --enable-static-linking option for configure
- does the same thing as LDFLAGS=-static; ./configure
- but nicer than mixing evars and configure options.
-----------------------------------------------------------------
About Privoxy:
At present, Privoxy is known to run on Windows 95 and later versions
(98, ME, 2000, XP, Vista, Windows 7 etc.), GNU/Linux (RedHat, SuSE,
Debian, Fedora, Gentoo, Slackware and others), Mac OS X (10.4 and
-upwards on PPC and Intel processors), OS/2, Haiku, DragonFly, ElectroBSD,
+upwards on PPC and Intel processors), Haiku, DragonFly, ElectroBSD,
FreeBSD, NetBSD, OpenBSD, Solaris, and various other flavors of Unix.
In addition to the core features of ad blocking and cookie management,
* Supports tagging which allows to change the behaviour based on client
and server headers.
+ * Supports https inspection which allows to filter https requests.
+
* Can be run as an "intercepting" proxy, which obviates the need to
configure browsers individually.