X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=doc%2Fwebserver%2Fuser-manual%2Fwhatsnew.html;h=57c609053616c4cf917b93dc9d43b3a48136a246;hp=5db06aa6e87fdae393af11977d60f486f051f3c5;hb=95923775ba5f094b8a09499e7c1e45f4e58074f3;hpb=f58c5980aee3f57aa69b7cd433384cc1f9594986 diff --git a/doc/webserver/user-manual/whatsnew.html b/doc/webserver/user-manual/whatsnew.html index 5db06aa6..57c60905 100644 --- a/doc/webserver/user-manual/whatsnew.html +++ b/doc/webserver/user-manual/whatsnew.html @@ -1,560 +1,474 @@ - -
Privoxy 3.0.15 beta is a bug-fix release - for the previous beta. The changes since 3.0.14 are:
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A bunch of MS VC project files and Suse and Redhat RPM spec - files have been removed as they were no longer maintained for - quite some time.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. -
If you missed the previous two beta versions, you may also be - interested in the additional changes since 3.0.12, the - last stable release:
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 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. -
The max-client-connections option has been added to restrict - the number of client connections below a value enforced by - the operating system. -
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. -
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. -
The configure script respects the $PATH variable when searching - for groups and id. -
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 tarballs 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 -
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 3.0.33 fixes an XSS issue and multiple DoS issues and a couple of other + bugs. The issues also affect earlier Privoxy releases. Privoxy 3.0.33 also comes + with a couple of general improvements an new features.
+Changes in Privoxy 3.0.33 stable:
+Security/Reliability:
+cgi_error_no_template(): Encode the template name to prevent XSS (cross-side scripting) when Privoxy is + configured to servce the user-manual itself. Commit 0e668e9409c. OVE-20211102-0001. CVE-2021-44543. + Reported by: Artem Ivanov
+get_url_spec_param(): Free memory of compiled pattern spec before bailing. Reported by Joshua Rogers + (Opera) who also provided the fix. Commit 652b4b7cb0. OVE-20211201-0003. CVE-2021-44540.
+process_encrypted_request_headers(): Free header memory when failing to get the request destination. + Reported by Joshua Rogers (Opera) who also provided the fix. Commit 0509c58045. OVE-20211201-0002. + CVE-2021-44541.
+send_http_request(): Prevent memory leaks when handling errors Reported by Joshua Rogers (Opera) who + also provided the fix. Commit c48d1d6d08. OVE-20211201-0001. CVE-2021-44542.
+Bug fixes:
+handle_established_connection(): Skip the poll()/select() calls if TLS data is pending on the server + socket. The TLS library may have already consumed all the data from the server response in which case + poll() and select() will not detect that data is available to be read. Fixes SF bug #926 reported by Wen + Yue.
+continue_https_chat(): Update csp->server_connection.request_sent after sending the request to make + sure the latency is calculated correctly. Previously https connections were not reused after timeout + seconds after the first request made on the connection.
+free_pattern_spec(): Don't try to free an invalid pointer when unloading an action file with a TAG + pattern while Privoxy has been compiled without FEATURE_PCRE_HOST_PATTERNS. Closes: SF patch request #147. + Patch by Maxim Antonov.
+Adjust build_request_line() to create a CONNECT request line when https-inspecting and forwarding to a + HTTP proxy. Fixes SF bug #925 reported by Wen Yue.
+load_config(): Add a space that was missing in a log message.
+read_http_request_body(): Fix two error messages that used an incorrect variable.
+If the the response is chunk-encoded, ignore the Content-Length header sent by the server. Allows to + load https://redmine.lighttpd.net/ with filtering enabled.
+General improvements:
+Allow to edit the add-header action through the CGI editor by generalizing the code that got added with + the suppress-tag action. Closes SF patch request #146. Patch by Maxim Antonov.
+Add a CGI handler for /wpad.dat that returns a Proxy Auto-Configuration (PAC) file. Among other things, + it can be used to instruct clients through DHCP to use Privoxy as proxy. For example with the dnsmasq + option: dhcp-option=252,http://config.privoxy.org/wpad.dat Initial patch by Richard Schneidt.
+Don't log the applied actions in process_encrypted_request() Log them in continue_https_chat() instead + to mirror chat(). Prevents the applied actions from getting logged twice for the first request on an + https-inspected connection.
+OpenSSL generate_host_certificate(): Use config.privoxy.org as Common Name Org and Org Unit if the real + host name is too long to get accepted by OpenSSL. Clients should only care about the Subject Alternative + Name anyway and we can continue to use the real host name for it. Reported by Miles Wen on + privoxy-users@.
+Establish the TLS connection with the client earlier and decide how to route the request afterwards. + This allows to change the forwarding settings based on information from the https-inspected request, for + example the path.
+listen_loop(): When shutting down gracefully, close listening ports before waiting for the threads to + exit. Allows to start a second Privoxy with the same config file while the first Privoxy is still + running.
+serve(): Close the client socket as well if the server socket for an inspected connection has been + closed. Privoxy currently can't establish a new server connection when the client socket is reused and + would drop the connection in continue_https_chat() anyway.
+Don't disable redirect checkers in redirect_url(). Disable them in handle_established_connection() + instead. Doing it in redirect_url() prevented the +redirect{} and +fast-redirects{} actions from being + logged with LOG_LEVEL_ACTIONS.
+handle_established_connection(): Slightly improve a comment.
+handle_established_connection(): Fix a comment.
+socks5_connect(): Fix indentation.
+handle_established_connection(): Improve an error message.
+create_pattern_spec(): Fix ifdef indentation.
+Fix comment typos.
+process_encrypted_request(): Improve a log message. The function only processes request headers and + there may still be unread request body data left to process.
+chat(): Log the applied actions before deciding how to forward the request.
+parse_time_header(): Silence a coverity complaint when building without assertions.
+receive_encrypted_request_headers(): Improve a log message.
+mbedTLS get_ciphersuites_from_string(): Use strlcpy() instead of strncpy(). Previously the terminating + NUL wasn't copied which resulted in a compiler warning. This didn't cause actual problems as the target + buffer was initialized by zalloc_or_die() so the last byte of the target buffer was NUL already. Actually + copying the terminating NUL seems clearer, though.
+Remove compiler warnings. "log_error(LOG_LEVEL_FATAL, ..." doesn't return but apparently the compiler + doesn't know that. Get rid of several "this statement may fall through [-Wimplicit-fallthrough=]" + warnings.
+Store the PEM certificate in a dynamically allocated buffer when https-inspecting. Should prevent errors + like: 2021-03-16 22:36:19.148 7f47bbfff700 Error: X509 PEM cert len 16694 is larger than buffer len 16383 + As a bonus it should slightly reduce the memory usage as most certificates are smaller than the previously + used fixed buffer. Reported by: Wen Yue
+OpenSSL generate_host_certificate(): Fix two error messsages.
+Improve description of handle_established_connection()
+OpenSSL ssl_store_cert(): Translate EVP_PKEY_EC to a string.
+OpenSSL ssl_store_cert(): Remove pointless variable initialization.
+OpenSSL ssl_store_cert(): Initialize pointer with NULL instead of 0.
+Action file improvements:
+Disable fast-redirects for .microsoftonline.com/.
+Disable fast-redirects for idp.springer.com/.
+Disable fast-redirects for .zeit.de/zustimmung.
+Unblock adv-archiv.dfn-cert.de/.
+Block requests to eu-tlp01.kameleoon.eu/.
+Block requests to fpa-events.arstechnica.com/.
+Unblock nlnet.nl/.
+Unblock adguard.com/.
+Privoxy-Log-Parser:
+Highlight 'Socket timeout 3 reached: http://127.0.0.1:20000/no-filter/chunked-content/36'.
+Improve documentation for inactivity-detection mode.
+Detect date changes when looking for inactivity.
+Add a --passed-request-statistics-threshold option that can be set to get statistics for requests that + were passed.
+Add a "inactivity detection" mode which can be useful for debugging purposes.
+Bump version to 0.9.4.
+Only run print_intro() and print_outro() when syntax highlighting.
+Rephrase a sentence in the documentation.
+Highlight 'Client socket 7 is no longer usable. The server socket has been closed.'.
+Clarify --statistics output by explicitly mentioning that the status codes sent by the server may differ + from the ones in "debug 512" messages.
+Fix typo in the --statistics output.
+Remove an unused variable.
+Highlight 'The peer notified us that the connection on socket 11 is going to be closed'.
+Privoxy-Regression-Test:
+Remove duplicated word in a comment.
+regression-tests.action:
+Add fetch test for http://p.p/wpad.dat.
+Bump for-privoxy-version to 3.0.33 which introduced the wpad.dat support.
+Add more tests for the '/send-banner' code.
+Add test for OVE-20210203-0001.
+Add a test for CVE-2021-20217.
+uagen:
+Bump generated Firefox version to 91 (ESR).
+Bump version to 1.2.3.
+Bump copyright.
+Build system:
+configure: Bump SOURCE_DATE_EPOCH.
+GNUmakefile.in: Fix typo.
+configure: Add another warning in case --disable-pthread is used while POSIX threads are available. + Various features don't even compile when not using threads.
+Add configure option to enable MemorySanitizer.
+Add configure option to enable UndefinedBehaviorSanitizer.
+Add configure option to enable AddressSanitizer.
+Bump copyright.
+Add a configure option to disable pcre JIT compilation. While JIT compilation makes filtering faster it + can cause false-positive valgrind complaints. As reported by Gwyn Ciesla in SF bug 924 it also can cause + problems when the SELinux policy does not grant Privoxy "execmem" privileges.
+configure: Remove obsolete RPM_BASE check.
+Windows build system:
+Update the build script to use mbed tls version 2.6.11.
+Update build script to use the final 8.45 pcre library.
+Put all the '--enable-xxx' options in the configure call together.
+macOS build system:
+The OSXPackageBuilder repository has been updated and can be used to create macOS packages again.
+Documentation:
+contacting: Remove obsolete reference to announce.sgml.
+contacting: Request that the browser cache is cleared before producing a log file for submission.
+Sponsor FAQ: Note that Privoxy users may follow sponsor links without Referer header set.
+newfeatures: Clarify that https inspection also allows to filter https responses.
+developer-manual: Mention that announce.txt should be updated when doing a release.
+config: Explicitly mention that the CGI pages disclosing the ca-password can be blocked and upgrade the + disclosure paragraphs to a warning.
+Put all the requested debug options in the config file. Section 11.1 of the Privoxy user manual lists + all the debug options that should be enabled when reporting problems or requesting support. Make it easier + for users to do the right thing by having all those options present in the config.
+Update TODO list item #184 to note that WolfSSL support will (hopefully) appear after the 3.0.34 + release.
+Update max-client-connections's description. On modern systems other than Windows Privoxy should use + poll() in which case the FD_SETSIZE value isn't releveant.
+Add a warning that the socket-timeout does not apply to operations done by TLS libraries.
+Make documentation slightly less "offensive" for some people by avoiding the word "hell".
+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.
+