Privoxy 3.0.17 is a stable release. - The changes since 3.0.16 stable are:
Fixed last-chunk-detection for responses where the content was small - enough to be read with the body, causing Privoxy to wait for the - end of the content until the server closed the connection. - Reported by "Karsten" in #3028326. -
Responses with status code 204 weren't properly detected as body-less - like RFC2616 mandates. Like the previous bug, this caused Privoxy - to wait for the end of the content until the server closed the connection. - Fixes #3022042 and #3025553, reported by a user with no visible name. - Most likely also fixes a bunch of other AJAX-related problem reports - that got closed in the past due to insufficient information and lack - of feedback. -
Fixed an ACL bug that made it impossible to build a blacklist. - Usually the ACL directives are used in a whitelist, which worked - as expected, but blacklisting is still useful for public proxies - where one only needs to deny known abusers access. -
Added LOG_LEVEL_RECEIVED to log the not-yet-parsed data read from the - network. This should make debugging various parsing issues a lot easier. -
The IPv6 code is enabled by default on Windows versions that support it. - Patch submitted by oCameLo in #2942729. -
In mingw32 versions, the user.filter file is reachable through the - GUI, just like default.filter is. Feature request 3040263. -
Added the configure option --enable-large-file-support to set a few - defines that are required by platforms like GNU/Linux to support files - larger then 2GB. Mainly interesting for users without proper logfile - management. -
Logging with "debug 16" no longer stops at the first nul byte which is - pretty useless. Non-printable characters are replaced with their hex value - so the result can't span multiple lines making parsing them harder then - necessary. -
Privoxy logs when reading an action, filter or trust file. -
Fixed incorrect regression test markup which caused a test in - 3.0.16 to fail while Privoxy itself was working correctly. - While Privoxy accepts hide-referer, too, the action name is actually - hide-referrer which is also the name used one the final results page, - where the test expected the alias. -
CGI interface improvements: -
In finish_http_response(), continue to add the 'Connection: close' - header if the client connection will not be kept alive. - Anonymously pointed out in #2987454. -
Apostrophes in block messages no longer cause parse errors - when the blocked page is viewed with JavaScript enabled. - Reported by dg1727 in #3062296. -
Fix a bunch of anchors that used underscores instead of dashes. -
Allow to keep the client connection alive after crunching the previous request. - Already opened server connections can be kept alive, too. -
In cgi_show_url_info(), don't forget to prefix URLs that only contain http:// or https:// in the path. - Fixes #2975765 reported by Adam Piggott. -
Show the 404 CGI page if cgi_send_user_manual() is called while - local user manual delivery is disabled. -
Action file improvements: -
Enable user.filter by default. Suggested by David White in #3001830. -
Block .sitestat.com/. Reported by johnd16 in #3002725. -
Block .atemda.com/. Reported by johnd16 in #3002723. -
Block js.adlink.net/. Reported by johnd16 in #3002720. -
Block .analytics.yahoo.com/. Reported by johnd16 in #3002713. -
Block sb.scorecardresearch.com, too. Reported by dg1727 in #2992652. -
Fix problems noticed on Yahoo mail and news pages. -
Remove the too broad yahoo section, only keeping the - fast-redirects exception as discussed on ijbswa-devel@. -
Don't block adesklets.sourceforge.net. Reported in #2974204. -
Block chartbeat ping tracking. Reported in #2975895. -
Tag CSS and image requests with cautious and medium settings, too. -
Don't handle view.atdmt.com as image. It's used for click-throughs - so users should be able to "go there anyway". - Reported by Adam Piggott in #2975927. -
Also let the refresh-tags filter remove invalid refresh tags where - the 'url=' part is missing. Anonymously reported in #2986382. - While at it, update the description to mention the fact that only - refresh tags with refresh times above 9 seconds are covered. -
javascript needs to be blocked with +handle-as-empty-document to - work around Firefox bug 492459. So move .js blockers from - +block{Might be a web-bug.} -handle-as-empty-document - to - +block{Might be a web-bug.} +handle-as-empty-document -
ijbswa-Feature Requests-3006719 - Block 160x578 Banners. -
Block another omniture tracking domain -
Added a range-requests tagger. -
Added two sections to get Flickr's Ajax interface working with - default pre-settings. If you change the configuration to block - cookies by default, you'll need additional exceptions. - Reported by Mathias Homann in #3101419 and by Patrick on ijbswa-users@ -
Documentation improvements: -
Explicitly mention how to match all URLs. -
Consistently recommend socks5 in the Tor FAQ entry and mention - its advantage compared to socks4a. Reported by David in #2960129. -
Slightly improve the explanation of why filtering may appear - slower than it is. -
Grammar fixes for the ACL section. -
Privoxy-Log-Parser improvements: -
Also gather statistics for blocked and redirected requests. -
Provide the percentage of keep-alive offers the client accepted. -
Add a --url-statistics-threshold option. -
Also gather statistics for ressources, methods, and HTTP versions - used by the client. -
Add a --host-statistics-threshold option to also gather - statistics about how many request where made per host. -
Fix a bug in handle_loglevel_header() where a 'scan: ' got lost. -
Add a --shorten-thread-ids option to replace the thread id with - a decimal number. -
Accept and ignore: Looks like we got the last chunk together - with the server headers. We better stop reading. -
Accept and ignore: Continue hack in da house. -
Accept and higlight: Rejecting connection from 10.0.0.2. - Maximum number of connections reached. -
Accept and highlight: Loading actions file: /usr/local/etc/privoxy/default.action -
Accept and highlight: Loading filter file: /usr/local/etc/privoxy/default.filter -
Accept and highlight: Killed all-caps Host header line: HOST: bestproxydb.com -
Accept and highlight: Reducing expected bytes to 0. Marking - the server socket tainted after throwing 4 bytes away. -
Accept: Merged multiple header lines to: 'X-FORWARDED-PROTO: http X-HOST: 127.0.0.1' -
Code cleanups: -
Remove the next member from the client_state struct. Only the main - thread needs access to all client states so give it its own struct. -
Garbage-collect request_contains_null_bytes(). -
Ditch redundant code in unload_configfile(). -
Ditch LogGetURLUnderCursor() which doesn't seem to be used anywhere. -
In write_socket(), remove the write-only variable write_len in - an ifdef __OS2__ block. Spotted by cppcheck. -
In connect_to(), don't declare the variable 'flags' on OS/2 where - it isn't used. Spotted by cppcheck. -
Limit the scope of various variables. Spotted by cppcheck. -
In add_to_iob(), turn an interestingly looking for loop into a - boring while loop. -
Code cleanup in preparation for external filters. -
In listen_loop(), mention the socket on which we accepted the - connection, not just the source IP address. -
In write_socket(), also log the socket we're writing to. -
In log_error(), assert that escaped characters get logged - completely or not at all. -
In log_error(), assert that ival and sval have reasonable values. - There's no reason not to abort() if they don't. -
Remove an incorrect cgi_error_unknown() call in a - cannnot-happen-situation in send_crunch_response(). -
Clean up white-space in http_response definition and - move the crunch_reason to the beginning. -
Turn http_response.reason into an enum and rename it - to http_response.crunch_reason. -
Silence a 'gcc (Debian 4.3.2-1.1) 4.3.2' warning on i686 GNU/Linux. -
GNUmakefile improvements: -
Use $(SSH) instead of ssh, so one only needs to specify a username once. -
Removed references to the action feedback thingy that hasn't been - working for years. -
Consistently use shell.sourceforge.net instead of shell.sf.net so - one doesn't need to check server fingerprints twice. -
Removed GNUisms in the webserver and webactions targets so they - work with standard tar. -
A quick list of things to be aware of before upgrading from earlier - versions of Privoxy:
The recommended way to upgrade Privoxy is to backup your old - configuration files, install the new ones, verify that Privoxy - is working correctly and finally merge back your changes using - diff and maybe patch. -
There are a number of new features in each Privoxy release and - most of them have to be explicitly enabled in the configuration - files. Old configuration files obviously don't do that and due - to syntax changes using old configuration files with a new - Privoxy isn't always possible anyway. -
- Note that some installers remove earlier versions completely, - including configuration files, therefore you should really save - any important configuration files! -
- On the other hand, other installers don't overwrite existing configuration - files, thinking you will want to do that yourself. -
- standard.action has been merged into - the default.action file. -
In the default configuration only fatal errors are logged now. - You can change that in the debug section - of the configuration file. You may also want to enable more verbose - logging until you verified that the new Privoxy version is working - as expected. -
Three other config file settings are now off by default: - enable-remote-toggle, - enable-remote-http-toggle, - and enable-edit-actions. - If you use or want these, you will need to explicitly enable them, and - be aware of the security issues involved. -
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.
+Changes in Privoxy 3.0.28 stable:
+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.
+Changes in Privoxy 3.0.27 stable:
+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. Sponsored by: Robert Klemme
+Add a listen-backlog directive which specifies the backlog value passed to listen(). 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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.
+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'
+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. Sponsored by: Robert Klemme
+Count connection timeouts as well in statistics mode. 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.
+A quick list of things to be aware of before upgrading from earlier versions of Privoxy:
+The recommended way to upgrade Privoxy is to backup your old + configuration files, install the new ones, verify that Privoxy is working + correctly and finally merge back your changes using diff and maybe + patch.
+There are a number of new features in each Privoxy release and most of + them have to be explicitly enabled in the configuration files. Old configuration files obviously don't do + that and due to syntax changes using old configuration files with a new Privoxy isn't always possible anyway.
+Note that some installers remove earlier versions completely, including configuration files, therefore you + should really save any important configuration files!
+On the other hand, other installers don't overwrite existing configuration files, thinking you will want + to do that yourself.
+In the default configuration only fatal errors are logged now. You can change that in the debug section of the configuration file. You may also want to enable more verbose + logging until you verified that the new Privoxy version is working as + expected.
+Three other config file settings are now off by default: enable-remote-toggle, enable-remote-http-toggle, and enable-edit-actions. If you use or want these, you will need to + explicitly enable them, and be aware of the security issues involved.
+