-------------------------------------------------------------------- ChangeLog for Privoxy -------------------------------------------------------------------- *** Version 3.0.17 Stable *** - 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 or the request timed out. 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 or the request timed out. 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. - Fixed a link to the 'intercepting' entry and add another one. - Rename the 'Other' section to 'Mailing Lists' and reword it to make it clear that nobody is forced to use the trackers - Note that 'anonymously' posting on the trackers may not always be possible. - Suggest to enable debug 32768 when suspecting parsing problems. - Privoxy-Log-Parser improvements: - Gather statistics for ressources, methods, and HTTP versions used by the client. - Also gather statistics for blocked and redirected requests. - Provide the percentage of keep-alive offers the client accepted. - Add a --url-statistics-threshold option. - 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 cannot-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. - Fix white-space in a log message in remove_chunked_transfer_coding(). While at it, add a note that the message doesn't seem to be entirely correct and should be improved later on. - 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. *** Version 3.0.16 Stable *** - Added the config file option handle-as-empty-doc-returns-ok to work around Firefox bug #492459, which causes Firefox to hang if JavaScripts are blocked in certain situations. The option is enabled in the default config file. - Added the config file option default-server-timeout to control the assumed default server timeout. Since Privoxy no longer returns an error message for connection resets on reused client connections, assuming larger server timeout values appears to actually work pretty well as long as connections aren't shared. - Added optional support for FreeBSD's accf_http(9). Use the configure option --enable-accept-filter to enable it. - Added fancier Privoxy icons for win32. Contributed by Jeff H. - In daemon mode, fd 0, 1 and 2 are bound to /dev/null. - Resolve localhost using whatever address family the operating system feels like. Previous betas would try to use IPv4 as this is what most users expect, but this didn't work reliably on GNU/Linux systems. - In the action lists on CGI pages, actions and their parameters are no longer separated with a space. The action file parser doesn't actually allow this and will throw an invalid syntax error if actions and parameters in the action files are separated. Not adding the spaces means copy and pasting CGI output into the action files works. - The default keep-alive timeout has been reduced to 5 seconds to work around hangs in clients that treat the proxy like any other host and stop allowing any new connections if the "maximum number of connections per host" is reached. - Several webbug URLs that look like they are leading to images are now blocked as image instead of empty documents. Doing the latter causes WebKit-based clients to show a "missing image" icon which may mess up the layout. - The no-such-domain template is used for DNS resolution problems with FEATURE_IPV6_SUPPORT enabled. Previously the connect-failed template was used. Reported by 'zebul666'. - Accepts quoted expiration dates even though RFC 2109 10.1.2 doesn't seem to allow them. Reported anonymously. - Don't try to forget connections if connection sharing is disabled. This wasn't a real problem but caused an unnecessary log message. - The still undocumented --enable-extended-host-patterns configure option has a better description. - Fixed an error message that would claim a write to the server failed when actually writing to the client failed. - Log the crunch reason before trying to write to the client. The log is easier to read that way. - Several log messages about client connections also mention the socket number. - handle-as-empty-document no longer depends on the image blocking code being enabled. - Privoxy-Log-Parser is roughly 40% faster in highlighting mode. - uagen, a Firefox User-Agent generator for Privoxy and Mozilla browsers has been imported and is available in the tarball's tools directory. - The scripts in the tools directory treat unknown parameters as fatal errors. *** Version 3.0.15 Beta *** - In case of missing server data, no error message is send to the client if the request arrived on a reused connection. The client is then supposed to silently retry the request without bothering the user. This should significantly reduce the frequency of the "No server or forwarder data received" error message many users reported. - More reliable detection of prematurely closed client sockets with keep-alive enabled. - FEATURE_CONNECTION_KEEP_ALIVE is decoupled from FEATURE_CONNECTION_SHARING and now available on all platforms. - Improved handling of POST requests on reused connections. Should fix problems with stalled connections after submitting form data with some browser configurations. - Fixed various latency calculation issues. - Allows the client to pass NTLM authentication requests to a forwarding proxy. This was already assumed and hinted to work in 3.0.13 beta but actually didn't. Now it's confirmed to work with IE, Firefox and Chrome. Thanks to Francois Botha and Wan-Teh Chang - Fixed a calculation problem if receiving the server headers takes more than two reads, that could cause Privoxy to terminate the connection prematurely. Reported by Oliver. - Compiles again on platforms such as OpenBSD and systems using earlier glibc version that don't support AI_ADDRCONFIG. Anonymously submitted in #2872591. - A bunch of MS VC project files and Suse and Redhat RPM spec files have been removed as they were no longer maintained for quite some time. - Overly long action lines are properly rejected with a proper error message. Previously they would be either rejected as invalid or cause a core dump through abort(). - Already timed-out connections are no longer temporarily remembered. They weren't reused anyway, but wasted a socket slot. - len refers to the number of bytes actually read which might differ from the ones received. Adjust log messages accordingly. - The optional JavaScript on the CGI page uses encodeURIComponent() instead of escape() which doesn't encode all characters that matter. Anonymously reported in #2832722. - Fix gcc45 warnings in decompress_iob(). - Various log message improvements. - Privoxy-Regression-Test supports redirect tests. - Privoxy-Log-Parser can gather some connection statistics. *** Version 3.0.14 Beta *** - The latency is taken into account when evaluating whether or not to reuse a connection. This should significantly reduce the number of connections problems several users reported. - If the server doesn't specify how long the connection stays alive, Privoxy errs on the safe side of caution and assumes it's only a second. - The error pages for connection timeouts or missing server data use a Last-Modified date in the past. Retry attempts are detected and Privoxy removes the If-Modified-Since header to prevent the server from responding with status code 304 in which case the client would reuse the error message. - Setting keep-alive-timeout to 0 disables keep-alive support. Previously Privoxy would claim to allow persistence but not reuse the connection. - Pipelined requests are less likely to be mistaken for the request body of the previous request. Note that Privoxy still has no real pipeline support and will either serialize pipelined requests or drop them in which case the client has to resent them. - Fixed a crash on some Windows versions when header randomization is enabled and the date couldn't be parsed. - Privoxy's keep-alive timeout for the current connection is reduced to the one specified in the client's Keep-Alive header. - For HTTP/1.1 requests, Privoxy implies keep-alive support by not setting any Connection header instead of using 'Connection: keep-alive'. - If the socket isn't reusable, Privoxy doesn't temporarily waste a socket slot to remember the connection. - If keep-alive support is disabled but compiled in, the client's Keep-Alive header is removed. - Fixed a bug on mingw32 where downloading large files failed if keep-alive support was enabled. - Fixed a bug that (at least theoretically) could cause log timestamps to be occasionally off by about a second. - No Proxy-Connection header if added if there already is one. - The configure script respects the $PATH variable when searching for groups and id. *** Version 3.0.13 Beta *** - Added IPv6 support. Thanks to Petr Pisar who not only provided the initial patch but also helped a lot with the integration. - Added client-side keep-alive support. - The connection sharing code is only used if the connection-sharing option is enabled. - The max-client-connections option has been added to restrict the number of client connections below a value enforced by the operating system. - Fixed a regression reintroduced in 3.0.12 that could cause crashes on mingw32 if header date randomization was enabled. - Compressed content with extra fields couldn't be decompressed and would get passed to the client unfiltered. This problem has only be detected through statical analysis with clang as nobody seems to be using extra fields anyway. - If the server resets the Connection after sending only the headers Privoxy forwards what it got to the client. Previously Privoxy would deliver an error message instead. - Error messages in case of connection timeouts use the right HTTP status code. - If spawning a child to handle a request fails, the client gets an error message and Privoxy continues to listen for new requests right away. - The error messages in case of server-connection timeouts or prematurely closed server connections are now template-based. - If zlib support isn't compiled in, Privoxy no longer tries to filter compressed content unless explicitly asked to do so. - In case of connections that are denied based on ACL directives, the memory used for the client IP is no longer leaked. - Fixed another small memory leak if the client request times out while waiting for client headers other than the request line. - The client socket is kept open until the server socket has been marked as unused. This should increase the chances that the still-open connection will be reused for the client's next request to the same destination. Note that this only matters if connection-sharing is enabled. - A TODO list has been added to the source tarball to give potential volunteers a better idea of what the current goals are. Donations are still welcome too: http://www.privoxy.org/faq/general.html#DONATE *** Version 3.0.12 *** - The socket-timeout option now also works on platforms whose select() implementation modifies the timeout structure. Previously the timeout was triggered even if the connection didn't stall. Reported by cyberpatrol. - The Connection: keep-alive code properly deals with files larger than 2GB. Previously the connection was closed too early. - The content length for files above 2GB is logged correctly. - The user-manual directive on the show-status page links to the documentation location specified with the directive, not to the Privoxy website. - When running in daemon mode, Privoxy doesn't log anything to the console unless there are errors before the logfile has been opened. - The show-status page prints warnings about invalid directives on the same line as the directives themselves. - Fixed several justified (but harmless) compiler warnings, mostly on 64 bit platforms. - The mingw32 version explicitly requests the default charset to prevent display problems with some fonts available on more recent Windows versions. Patch by Burberry. - The mingw32 version uses the Privoxy icon in the alt-tab windows. Patch by Burberry. - The timestamp and the thread id is omitted in the "Fatal error" message box on mingw32. - Fixed two related mingw32-only buffer overflows. Triggering them required control over the configuration file, therefore this isn't seen as a security issue. - In verbose mode, or if the new option --show-skipped-tests is used, Privoxy-Regression-Test logs skipped tests and the skip reason. *** Version 3.0.11 *** - On most platforms, outgoing connections can be kept alive and reused if the server supports it. Whether or not this improves things depends on the connection. - When dropping privileges, membership in supplementary groups is given up as well. Not doing that can lead to Privoxy running with more rights than necessary and violates the principle of least privilege. Users of the --user option are advised to update. Thanks to Matthias Drochner for reporting the problem, providing the initial patch and testing the final version. - Passing invalid users or groups with the --user option didn't lead to program exit. Regression introduced in 3.0.7. - The match all section has been moved from default.action to a new file called match-all.action. As a result the default.action no longer needs to be touched by the user and can be safely overwritten by updates. - The standard.action file has been removed. Its content is now part of the default.action file. - In some situations the logged content length was slightly too low. - Crunched requests are logged with their own log level. If you used "debug 1" in the past, you'll probably want to additionally enable "debug 1024", otherwise only passed requests will be logged. If you only care about crunched requests, simply replace "debug 1" with "debug 1024". - The crunch reason has been moved to the beginning of the crunch message. For HTTP URLs, the protocol is logged as well. - Log messages are shortened by printing the thread id on its own (as opposed to putting it inside the string "Privoxy()"). - The config option socket-timeout has been added to control the time Privoxy waits for data to arrive on a socket. - Support for remote toggling is controlled by the configure option --disable-toggle only. In previous versions it also depended on the action editor and thus configuring with the --disable-editor option would disable remote toggling support as well. - Requests with invalid HTTP versions are rejected. - The template symbol @date@ can be used to include a date(1)-like time string. Initial patch submitted by Endre Szabo. - Responses from shoutcast servers are accepted again. Problem reported and fix suggested by Stefan. - The hide-forwarded-for-headers action has been replaced with the change-x-forwarded-for{} action which can also be used to add X-Forwarded-For headers. The latter functionality already existed in Privoxy versions prior to 3.0.7 but has been removed as it was often used unintentionally (by not using the hide-forwarded-for-headers action). - A "clear log" view option was added to the mingw32 version to clear out all of the lines in the Privoxy log window. Based on a patch submitted by T Ford. - The mingw32 version uses "critical sections" now, which prevents log message corruption under load. As a side effect, the "no thread-safe PRNG" warning could be removed as well. - The mingw32 version's task bar icon is crossed out and the color changed to gray if Privoxy is toggled off. *** Version 3.0.10 *** - Ordinary configuration file changes no longer cause program termination on OS/2 if the name of the logfile hasn't been changed as well. This regression probably crept in with the logging improvements in 3.0.7. Reported by Maynard. - The img-reorder filter is less likely to mess up JavaScript code in img tags. Problem and solution reported by Glenn Washburn in #2014552. - The source tar ball now includes Privoxy-Log-Parser, a syntax-highlighter for Privoxy logs. For fancy screenshots see: http://www.fabiankeil.de/sourcecode/privoxy-log-parser/ Documentation is available through perldoc(1). *** Version 3.0.9 Beta *** - Added SOCKS5 support (with address resolution done by the SOCKS5 server). Patch provided by Eric M. Hopper. - The "blocked" CGI pages include a block reason that was provided as argument to the last-applying block action. - If enable-edit-actions is disabled (the default since 3.0.7 beta) the show-status page hides the edit buttons and explains why. Previously the user would get the "this feature has been disabled" message after using the edit button. - Forbidden CONNECT requests are treated like blocks by default. The now-pointless treat-forbidden-connects-like-blocks action has been removed. - Not enabling limit-connect now allows CONNECT requests to all ports. In previous versions it would only allow CONNECT requests to port 443. Use +limit-connect{443} if you think you need the old default behaviour. - The CGI editor gets turned off after three edit requests with invalid file modification timestamps. This makes life harder for attackers who can leverage browser bugs to send fake Referers and intend to brute-force edit URLs. - Action settings for multiple patterns in the same section are shared in memory. As a result these sections take up less space (and are loaded slightly faster). Problem reported by Franz Schwartau. - Linear white space in HTTP headers will be normalized to single spaces before parsing the header's content, headers split across multiple lines get merged first. This should prevent problems like: * letting the session-cookies-only action slip some Cookies through unmodified, * only suppressing the first line of a header, thus creating an invalid one, and * to incorrectly block headers with valid timestamps that weren't properly recognized. Headers that could trigger these problems are unlikely to appear in "normal" web traffic, but could be intentionally generated to fool some of Privoxy's header parsers. - Host information is gathered outside the main thread so it's less likely to delay other incoming connections if the host is misconfigured. - New config option "hostname" to use a hostname other than the one returned by the operating system. Useful to speed-up responses for CGI requests on misconfigured systems. Requested by Max Khon. - The CGI editor supports the "disable all filters of this type" directives "-client-header-filter", "-server-header-filter", "-client-header-tagger" and "-server-header-tagger". - Fixed false-positives with the link-by-url filter and URLs that contain the pattern "/jump/". - The less-download-windows filter no longer messes "Content-Type: application/x-shockwave-flash" headers up. - In the show-url-info page's "Final results" section active and inactive actions are listed separately. Patch provided by Lee. - The GNUmakefile supports the DESTDIR variable. Patch for the install target submitted by Radoslaw Zielinski. - Embedding the content of configuration files in the show-status page is significantly faster now. For a largish action file (1 MB) a speedup of about 2450 times has been measured. This is mostly interesting if you are using large action files or regularly use Privoxy-Regression-Test while running Privoxy through Valgrind, for stock configuration files it doesn't really matter. - If zlib support is unavailable and there are content filters active but the prevent-compression action is disabled, the show-url-info page includes a warning that compression might prevent filtering. - The show-url-info page provides an OpenSearch Description that allows to access the page through browser search plugins. - Custom client-header filters that rewrite the request line incorrectly no longer cause Privoxy to crash. Reported by din_a4. - The obsolete kill-popups action has been removed as the PCRS-based popup filters can do the same and are slightly less unreliable. - The inspect-jpegs action has been removed. - The send-wafer and send-vanilla-wafer actions have been removed. They weren't particular useful and their behaviour could be emulated with add-header anyway. - Privoxy-Regression-Test has been significantly improved. - Most sections in the default.action file contain tests for Privoxy-Regression-Test to verify that they are working as intended. - Parts of Privoxy have been refactored to increase maintainability. - Building with zlib (if available) is done by default. *** Version 3.0.8 *** - Fixed a small memory leak when listen-address only specifies the port. - The source tar balls now include Privoxy-Regression-Test which (upon other things) can be used to automatically detect some packaging problems. Packagers are welcome to give it a try. - Reverted a change in 3.0.7 that caused path patterns to be checked even if the host pattern match already failed. While this doesn't noticeable affect the performance, it makes it less likely to run out of stack space with overly-complex path patterns the user might have added. - Updated the msn, yahoo and google filters to work as advertised again. - The warning message shown by the show-status CGI page is easier to understand. Previously it wasn't clear that the error message is shown below the invalid directive. (Reported by Lee) - When regenerating Content-Disposition headers the more common spelling is used for the name. Previously it was written without caps. - Less confusing log message if the content type isn't overwritten because force-text-type wasn't used but the old type doesn't look like content that would be filtered normally. - Better log messages if the user tries to execute filters that don't exist. - Treat the non-standard Request-Range headers like standard range headers and suppress them if content filtering is enabled. - Prevent the log messages for CONNECT requests to unacceptable ports from printing the limit-connect argument as [null] if limit-connect hasn't been explicitly enabled. - Don't disable the mingw32 log window if the logfile directive isn't used. While it was an intentional change in 3.0.7 at least one user perceived it as a regression and the same effect can be achieved by disabling all debug directives. - Fixed two minor problems related to the win32 build process: a css file was not being in the installer and the trustfile comment in the config.txt referenced a nonexisting file - Minor documentation fixes. *** Version 3.0.7 Beta *** - Added zlib support to filter content with gzip and deflate encoding. (Patch provided by Wil Mahan) - Dedicated filters and actions are used for header filtering. "filter-client-headers" and "filter-client-headers" are no longer supported, use server-header-filter{} and client-header-filter{} instead. - Tags can be used to change actions based on HTTP headers. - New server-header filter: less-download-windows. - New client-header taggers: css-requests, image-requests, client-ip-address, http-method, allow-post, complete-url, user-agent and privoxy-control. - New server-header taggers: content-type and privoxy-control. - The forward-override{} action allows to change the forwarding settings through the action files, for example based on client headers like the User-Agent, or the request origin. - Socks errors are no longer handled by the CGI page for DNS resolution failures. - CGI pages use favicons to signal whether they are error or control pages. This is useful if you rely heavily on browser tabs. - The show-url-info CGI page shows the forwarding settings. - "Crunch!" log messages (used when Privoxy answers requests by itself) now also contain the reason. - Allow to rewrite the request destination behind the client's back. - Fix socks requests on big-endian platforms. Patch provided by Song Weijia. - Fixes possible deadlocks and crashes on OpenBSD. Patch provided by Ralf Horstmann. - The CGI action editor allows to edit actionfiles with previously forbidden characters like dots. - New trust entries are saved with a comment that contains the trusted referring URL (Suggested by Daniel Griscom). - Filter descriptions are HTML encoded automatically. - New config option "split-large-forms" to work around a browser bug that caused IE6 and IE7 to ignore the Submit button on the edit-actions-for-url CGI page. - New config option "allow-cgi-request-crunching" to allow requests for Privoxy's CGI pages to be blocked, redirected or (un)trusted like ordinary requests. - Empty filter files no longer interrupt the filtering process prematurely and are correctly listed on the show-status CGI page. - New config option "accept-intercepted-requests" to combine Privoxy with any packet filter to build an intercepting proxy for HTTP/1.1 requests (and for HTTP/1.0 requests with Host header set). - fast-redirects{} catch redirects to https URLs as well. - redirect{s@foo@bar@} can be used to redirect to a rewritten version of the original URL. - Trap unsupported gopher proxy requests. - Fixed a bug in the User Manual delivery on Windows (mingw32 only). Images now show up correctly and HTML pages are no longer padded with garbage data. - Fixed several minor memory leaks, most of them discovered with Valgrind. - Only unlink the pidfile if it's actually used. - Retries after connection problems with forced requests aren't blocked again. - On Unix SIGABRT causes a core dump as expected and is no longer treated as normal shutdown signal. - The "access denied" CGI page is more descriptive and allows retries to circumvent the referrer check. - Updated PCRS to handle unexpected PCRE errors properly. Fixed crashes that could occur if Privoxy was build with external PCRE versions newer than Privoxy's internal one. (Reported by Chung-chieh Shan) - Fixed crashes with null bytes in PCRS replacement strings (Patch provided by Felix Gröbert). - Fixed crashes with header time randomization on mingw32. - The CGI style sheet is no longer delivered if the referring page isn't a Privoxy CGI page. This prevents a JavaScript-based Privoxy detection "attack". Note that detecting Privoxy is still possible through other ways and Privoxy was never intended to be invisible anyway. - Added support for AmigaOS 4, fixed build for AmigaOS 3.x. - The show-url-info CGI page displays a warning if Privoxy is currently toggled off. - The show-status CGI page suppresses the edit button for action files if Privoxy has no write access. - Most CGI error pages react properly to HEAD requests. - Requests with RFC 3253 HTTP methods (used by Subversion) are accepted. (Patch provided by Petr Kadlec) - New config option "templdir" to change the location of the CGI templates to make sure customized templates aren't "updated". - Better handling of "HTTP/1.1 100 Continue" responses. - The background of the PNG pattern is transparent. - Fixed XML syntax errors caused by banners-by-size and banners-by-url. - Fixed crashes and possible action file corruptions when lines containing hashes are written through the CGI editor. - Supports dynamic filters which can contain variables. - Supports tags to change the actions based on client or server headers. - Incorrect actions are logged before program termination. - The "actionsfile" syntax in the configuration file is consistent with the rest of the configuration options and requires the whole file name. This is an incompatible change, if you use an old configuration file you might have to append ".action" to your "actionsfile" directives. - With the configuration file option "enforce-blocks" the "go there anyway" mechanism can be disabled without recompiling Privoxy. - More precise error messages in case of incorrect acl syntax. - Logs a warning if filtering is enabled but impossible due to lack of zlib support or use of the prevent-compression action. - Less noisy handling of Cookie:" and "Connection:" headers. - Improved error messages in case of connection problems. - Fix a command-line-parsing bug that was introduced before 3.0.5 beta and caused Privoxy to treat the last argument as configuration file if no configuration file was specified. - Treat unknown command line options as fatal errors instead of silently ignoring them. - Use string functions with length checks more often. - Don't log CONNECT requests twice. - Allow to log the source address for ACL-related connection drops. - Don't ignore applying filters if the server didn't specify a Content-Type. Bug reported by Amuro Namie. - Rejected CONNECT requests are logged with log level info (enabled by default) and the reason for the block. - New command line option "--pre-chroot-nslookup hostname" to intialize the resolver library before chroot'ing. On some systems this reduces the number of files that must be copied into the chroot tree. (Patch provided by Stephen Gildea) - Fix a long-standing memory corruption bug that could cause Privoxy to overwrite a single byte in memory it didn't explicitly allocate (but that probably was allocated anyway due to bucket size). - Send template-based CGI pages as HTTP/1.1 unless the client asked for HTTP/1.0. - Let the first line in connection established responses end in \r\n as required by RFC1945. Reported by Bert van Leeuwen. - If no log file has been specified, disable logging instead of logging to stderr. - Don't block stderr when in daemon mode. - Ignore missing zero-chunks when filtering chunk-encoded content. Earlier Privoxy versions would buffer and then forward the content unmodified which caused some browsers to simply show empty pages. - Fix double free in cgi_edit_actions_list(). Reported by Venustech AD-LAB. - The code to add X-Forwarded-For headers when the hide-forwarded-for-headers action isn't being used has been removed. - Fixed trustfile feature which previously didn't work without FEATURE_TOGGLE. Reported by Lee. - Minor code clean-ups, filter and action file updates. (Some of them reported by Davide Alberani, Markus Elfring, Stefan Huehner and Adam Piggott) *** Version 3.0.6 *** - New content filters: no-ping, google, msn, yahoo and blogspot. - New header filters: x-httpd-php-to-html, html-to-xml, xml-to-html and hide-tor-exit-notation. - The special header "X-Filter: No" now disables header filtering as well. - Improved the filters img-reorder, js-annoyances, webbugs, banners-by-size, banners-by-link and ie-exploits to make them less likely to break anything. - Removed outdated URL patterns in default.action and added new ones. - Added redirection from http://p.p/user-manual to http://p.p/user-manual/ - Changed webinterface default values for hide-user-agent, hide-referrer and set-image-blocker. *** Version 3.0.5 Beta *** - Windows version can be installed/started as a service. - Windows icon stays blue when Privoxy is idle, green when busy. - Integrated Fabian Keil's extensive patch. See: http://www.fabiankeil.de/sourcecode/privoxy/. Includes the following new or significantly improved actions (among many other improvements): content-type-overwrite{} crunch-client-header{string} crunch-if-none-match crunch-server-header{string} fast-redirects{check-decoded-url} filter-client-headers filter-server-headers force-text-mode handle-as-empty-document hide-accept-language{} hide-content-disposition{} hide-if-modified-since hide-referrer{conditional-block} overwrite-last-modified{} redirect{URL} treat-forbidden-connects-like-blocks - Standard-compliant clients are prevented from displaying cached copies of Privoxy's error messages after the cause of the problem has gone. - Improved DNS error handling. - Multiple filter files can now be specified in config. - Added jpeg filtering to defend against MS jpeg vulnerability MS04-028 with the new inspect-jpegs action. - Removed the "arbitrary" 1000 filter limit - addresses tracker #911950 - Thanks to Jindrich Makovicka for a race condition fix for the log file. The race condition remains for non-pthread implementations. Reference patch #1175720. Various other logging enhancements. - A pile of assorted bug fixes, memory leaks, enhancements, etc. - Moved Actions file reporting mechanism to SF tracker. - Two new options for config: enable-remote-http-toggle and forwarded-connect-retries. - Trap unsupported FTP requests. - Let text/xml be filtered. - Numerous updates to default.action - Increase the compiled in limit of trusted referrers from 64 to 512 (for trustfile users). *** Version 3.0.3 *** - Fixed yet another two memory leaks. Process growth seems stopped now. - Further tightened security against malicious toggle-off links. - Excluded text/plain MIME types from filtering. This fixes a couple of client-crashing, download corruption and Privoxy performance issues, whose root cause lies in web servers labelling content of unknown type as text/plain. - Assorted fixes for POSIX compliance, signal handling, graceful termination, compiler warnings, OSX support, Win32 systray, error logging, hostname wildcards, correct detection of NetBSD. - Workarounds for client (iTunes etc) and server (PHP < 4.2.3) bugs including the notorious "blank page" problem. - Various filter improvements; most notably the unsolicited-popups filter became less destructive - Major revamp of the actions file *** Version 3.0.2 *** - Fixed two memory leaks, one serious - Fixed bug in pcrs which could cause crashes with user-defined filters - Fixed bug in domain name matching - Assorted small fixes (Win32 menu, CGI URL editor, ..) - Added basic support for the OPTIONS and TRACE http methods - Added workaround for Bug in Mac OSX that made Privoxy crash occasionally - Refined the default action file through >400 items of user feedback - Filter changes: - Assorted refinements, optimizations and fixes in the js-annoyances, img-reorder, banners-by-size, banners-by-link, webbugs, refresh-tags, html-annoyances, content-cookies and fun filters - Replaced filter "popups" by choice between two modes: - "unsolicited-popups" tries to catch only the unsolicited ones - "all-popups" tries to kill them all (as before) - New filter "tiny-textforms" Help those tiny or hard-wrap textareas. - New filter "jumping-windows" that prevents windows from resizing and moving themselves - New filter "demoronizer" which fixes MS's abuse of std charsets (common cases anyway). - Replaced "nimda" with more general "ie-exploits" filter in which all filters for exploits shall be collected - Improved cookie logging - Rewrote make install target. Added uninstall and install-strip targets. - Fixed a potential (application-level, NOT OS-level!) security problem involving remote toggling and action file manipulation by mailicious websites. - Added ability to chroot (thanks to Sviatoslav Sviridov) - Added more action aliases for prehistoric action names - Add Slackware support to Makefile. *** Version 3.0 *** - Fixed Windows startmenu items, log window and tray icon menus. - Added warning for bogus install target - Added quicktime-kioskmode filter and improved frameset-borders - Updated default.action based on latest feedback - New PDF doc build process - Add a user contrib module to cvs: http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/ijbswa/contrib/ *** Version 2.9.18 *** - Added workaround for IE bug that broke CGI interface - Bugfix: String actions now reliably editable through CGI interface - Three filters fixed (again!) - Assorted small fixes and doc enhancements *** Version 2.9.16 *** - Major revamp of default.action to get rid of years of cruft. - Same for default.filter - Re-design and major improvements to the CGI editor interface. - Address spurious 'out of memory' error due to incorrect file permissions. - Impose buffer limits while reading client and server headers. - Better memory and CPU optimization. - Add Conectiva Linux package. - user-manual directive added to config for help links from within CGI editor. - Multiple actions files can now be specified in config. - Actions files are changed to: default.action, standard.action, and user.action. user.action is for personal/local configuration. - The usual many small and miscellaneous bug and security fixes. *** Version 2.9.14 Beta *** - Fix Solaris compile problem (gateway.h and filters.h) - Makefile fixes for Solaris, FreeBSD (?) - Fix build failure where certain features were disabled. - 'blocked-compact' template is removed. Various CGI improvements, including an adaptive 'blocked' template. - Various tweaks for actions file to get ready for stable 3.0 - Included a 'Bookmarklet' and PHP scripts for reporting actions file problems via web interface at privoxy.org. Accessed via internal CGIs. - Include cgi-style.css for templates. - #include mechansim for common text in templates - Various other minor fixes. *** Version 2.9.13 Beta *** - *NEWS*: The project has been renamed to Privoxy! The new name is reflected throughout (file locations, etc). - ijb.action is now default.action. re_filterfile is now default.filter. - http://i.j.b/ is now http://p.p/ - The 'logo' option for replacing ad iamges is removed now. 'Pattern' (checkerboard) is now the default. - RPM spec file make over. *** Version 2.9.12 Beta *** - **READ**: The default listening PORT is NOW 8118!!! Changed from 8000 due to conflict with NAS (Network Audio Server, whatever that is.) - More CGI actions editor fixes and improvements. - Win32 command line fix ups. - re_filterfile now has modular sections that can be activated on a per site basis. Some new goodies there too. - +filter now takes arguments to match FILTER sections in re_filterfile for even more flexibility. - Added a new image blocker option: +image-blocker{pattern}, which displays a checkerboard patthern and scales better than the logo. - PNG images will be used in place of GIF for JB built-in images if configured with --enable-no-gif. - Clean up compiler warnings (mostly). - Improved handling of failed DNS lookups & diagnostics for failed bind to listen socket - Made --no-daemon mode log to tty instead of logfile. - Various spec file and init script cleanups and improvements (Redhat and SuSE). - CGI Editor works on OS/2 now. - Fix restart failure where sockets were in TIME_WAIT. - Fixes for actions cgi editor, make sure we have right file. - A --pidfile command line option now, in addition to --help, --version, --no-daemon, --user and configfile. --no-daemon replaces the former -d option and _DEBUG define. --user will drop privileges to the specified user. - Signal handling cleanups (*nix). - CGI actions editor improvements and fixes. - Error handling improvements, especially out of memory. - Default re_filterfile fix that caused spurious IJB logos (instead of 'blank'). - configure.in threading fixes for Solaris. - Various other minor fixes. *** Version 2.9.11 Beta Changes *** - Add "session" cookie concept where cookies exist for the life of that browser session only (ie never goes to disk). - Checks for correct header length. - Fix user:pass@host.domain.com auth bug. - Better signal handling on *nix. - Fix CFLAGS hard-coded in configure.in - Fix threading bug re: gethostbyname() that caused random URLs to fail in some cases. *** Version 2.9.11 Alpha Changes *** - A web-based editor for the actions file is included (go to http://i.j.b/). - Web-based toggle IJB on/off support. - Cookie handling has changed - the new +no-cookies-keep feature is now the default. - actionsfile is renamed to ijb.action. - junkbstr.txt is now config.txt on Win32. - Support for running IJB as a UNIX daemon process has improved. - Unix daemon now returns error code on failed start. - Timestamps in logfile and jarfile now. - Fix for the Netscape bug reintroduced in 2.9.9. - make should now abort if gmake (GNU make) not present. - Many other minor bugfixes - Start a ChangeLog :) *** Version 2.9.3 pre-Alpha Changes *** - Amiga support (completely untested by me - I don't have an Amiga) - "tinygif 3" support (redirects blocked images to a specified URL, so the browser doesn't have to load and cache many copies of the same image). - one case where there were both local and global "referrer" variables (yuck!) clarified by renaming the local one to "refer". - Fixed some places where close() was used instead of close_socket(). Thanks to Jörg Strohmayer (joergs at users.sourceforge.net) for these. - Temporary hack to get FORCE_LOAD to work with IE. I just lowercased the FORCE_LOAD_PREFIX. Needs fixing properly. - Most URLs hardcoded into Junkbuster were changed to go through a script e.g. http://ijbswa.sourceforge.net/redirect.php?v=2.9.3&to=faq The only other URLs left are the GNU GPL: http://www.fsf.org/copyleft/gpl.html and the home page: http://ijbswa.sourceforge.net/ ... and various URLs which will be intercepted by Junkbuster anyway. TODO: Still need to do something with the URLs in Junkbuster Corp's copyright/trademark notice on the bottom of the show-proxy-args page. - PCRE or GNU Regex is now a #define option. *** Version 2.9.2 pre-Alpha Changes *** - Andreas applied the latest version of the FORCE patch. *** Version 2.9.1 pre-Alpha Changes *** - in parsers.c, fixed two #ifdef FORCE to #ifdef FORCE_LOAD (BTW: I think FORCE is precise enough, since loading remote data is the whole purpose of a proxy..) - Set the FORCE_PREFIX (back) to 'IJB-FORCE-LOAD-'. While 'noijb.' is more elegant and looks like a hostname in the URL, it doesn't make clear to the inexperienced user that the proxy is bypassed. It also has a higher name collision risk. - Filled in the function header templates for my functions in parsers.c (again). They obviously got lost in our current patch war ;-) - Cut the credit for the §-referrer-option from the config file, that Stefan had placed there. - Improved the re_filterfile *** Version 2.9.0 pre-Alpha Changes *** - Now use PCRE, not GNU REGEX. I have not yet had chance to check the syntax of the block/image/cookie file to ensure that they match what is expected - however they seem to work. - Replaced "configure" script with one generated by "autoconf". Also use a header "config.h" (was ijbconfig.h in my previous release) for the #defines. "config.h" is now generated with "autoheader" from "acconfig.h" and "configure.in". (Note that to install you do not need autoconf or autoheader - just run "./configure".) To see command-line options, run "./configure --help". This is my first ever autoconf script, so it has some rough edges (how PCRE is handled is the roughest). - Error logging code replaced with new module errlog.c, based on the one from JunkbusterMT (but with the threading code removed). - Most of Rodney's 0.21 and 0.21A patches applied. (Marked *). I did not apply all of these, since I had already independently done conditional popup file, conditional image file, and integration of popup code. - ACL, Jar and trust files conditionally compiled. - New source file headers. - Various cosmetic changes. (But I have not consistently ordered the config files - I think that's worthwhile, but it's 1am and I want to get this released!) - RCS tags on .h files. - RCS tags are const char[] rather than const char *. (Saves 4 bytes per tag ;-) - VC++ project files renamed to vc_junkbuster.*. - show-proxy-args now shows status of all conditionals, not just REGEX - Various functions moved around. Most notably all the system-specific sockets code which was spread between jcc.c, bind.c, and connect.c, has been moved to "jbsockets.c". The non-system-specific code from connect.c and socks4.c has been movet to "gateway.c". Also, the config file loader and the global variables it writes to have been moved to "loadcfg.c". (Maybe this should go into loaders.c?) And candidate for the "worst filename ever" award is "miscutil.c", which contains, well, miscellaneous utility functions like zalloc. (Suggestions for a better name for this file are welcome!) - Loaders now use a common function to read a line and skip comments, and this function also stores the proxy_args. - Added ./junkbuster --help (Not for Win32 GUI) - Added ./junkbuster --version (Not for Win32 GUI) - Win32 resources are now all marked as "U.S. English", rather than being a mix of "U.S. English", "U.K. English" and "Irish English". - Version number changes to 2.9.0 ---------------------------------------------------------------------- Copyright : Written by and Copyright (C) 2001-2010 the Privoxy team. http://www.privoxy.org/ Based on the Internet Junkbuster originally written by and Copyright (C) 1997 Anonymous Coders and Junkbusters Corporation. http://www.junkbusters.com/ This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. The GNU General Public License should be included with this file. If not, you can view it at http://www.gnu.org/copyleft/gpl.html or write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.