-$Id: TODO,v 1.13 2010/01/24 15:38:50 fabiankeil Exp $
+$Id: TODO,v 1.108 2014/05/20 11:52:46 fabiankeil Exp $
-Some Privoxy related task, not ordered in any way.
+Some Privoxy-related tasks, sorted by the time they
+have been added, not by priority.
+
+The latest version should be available at:
+http://ijbswa.cvs.sourceforge.net/viewvc/ijbswa/current/TODO
1) Add some regression tests. Filters should be tested automatically
(variables too). Could probably reuse large parts of Privoxy-Filter-Test.
+ Note that there is currently work in progress to leverage curl's
+ test suite which could be used for this as well.
3) Fix some more XXX: comments.
-4) Fix some more compiler warnings. (Especially on amd64)
- Partly done.
-
6) Remove actions that aren't needed anymore:
content-type-overwrite should probably stay as it's also
11) CGI templates should use semantically-correct HTML
and scale properly.
-12) Add pipelining support.
-
-13) Use zlib to compress content before sending it to
- the client. Measure if it makes a difference.
+12) Support pipelining for outgoing connections.
-14) Log and filter POST parameters.
+14) Allow to filter POST parameters.
15) If trusted CGI pages are requested without trusted referrer,
set the status code to 403 instead of 200.
32) In case of forwarding failures with socks port == 9050,
show extra info about Tor (the whole FAQ entry?).
-35) Do less work in the accept_connection() thread.
- Partly done. Good enough?
-
36) Unload unused action files directly, even if they are
disabled without replacement.
38) In the final results, explicitly list disabled multi actions
with their parameters. Not as trivial as it sounds.
-39) Verify loadcfg.c jarfile reloading and friends.
- /* XXX: Does disabling this actually work? */
-
-40) Fix core dumping in daemon mode.
+40) When running in daemon mode, Privoxy's working directory is '/'
+ which means it may not have permissions to dump core when necessary.
+ Figure out a way to solve this. Introduce a cwd config option?
41) Change documentation framework to one that works cross-platform.
Evaluate WML.
-42) Add DTrace hooks.
+42) Add a DTrace USDT provider. Now that FreeBSD has userland DTrace
+ support there's no longer any reason not to.
43) Write a tool to check URL patterns against URLs in the log file.
This could be included in Privoxy-Regression-Test.
44) Privoxy-Log-Parser: Consider highlighting "Connection" in:
23:13:03.506 283b6100 Header: Replaced: 'Connection: Keep-Alive' with 'Connection: close'
-49) Add FAQ for NTLM proxies. Still necessary?
-
50) Investigate possible PCRS template speedup when searching
macros with strstr() before compiling pcrs commands.
Investigated, needs some restructuring but is probably worth it.
It would probably also make sense to look into what other
projects did when migrating away from SF.
+ 2014-05-13: Work in progress. Hosting wish list at the end
+ of this file.
+
54) Move away from CVS to a more modern revision control system.
Find out if there are any objection against going with Git.
- Using Git would also have the advantage that SF now pretents
+ Using Git would also have the advantage that SF now pretends
to support it, so we could do it independently from 53).
55) Apply for Coverity scans: http://scan.coverity.com/
-56) Apply for the "free online access for qualified open-source
- software projects" for the Co-Advisor HTTP compliance tests:
- http://coad.measurement-factory.com/details.html#pricing
-
57) Allow piping into external programs to allow more powerful
- filters and policy decisions.
+ filters and policy decisions. Incomplete support available
+ in Fabian's popen branch.
58) Move more template strings from the code into the actual templates.
is no legal entity.
65) Polish Website. Probably involves ditching the Docbook
- mess in favour of wml. There should be already some threads
- in the mailinglists archives about this.
+ mess in favour of wml. There are already several threads
+ in the mailinglist archives about this. See also #41.
-66) Increase maximum number of action and filter files.
+66) Stop hard-coding the number of action and filter files.
-67) Clean up directory layout. Depends on 54 so we don't
- lose the revision history.
+67) Clean up source code directory layout. Depends on 54 so
+ we don't lose the revision history.
68) Use standard make syntax so we don't depend on GNU make.
received, consider passing the mess to the client instead
of showing the connect-failed template. Relates to #2698674.
-71) Allow to listen on multiple addresses without having to
- bind to all.
-
-73) Factor FEATURE_CONNECTION_SHARING out of
- FEATURE_CONNECTION_KEEP_ALIVE so the later can be enabled
- on platforms without mutex support as well.
-
74) Let Privoxy-Regression-Test optionally check that action
sections which disable actions actually are preceded by
sections that enable said actions.
75) Create a tool that creates Privoxy action (and filter?) files
out of adblock files. Could be implemented as option for
url-pattern-translator.pl.
+
+76) Cache DNS responses. Note that this has been requested
+ several times by users, but is not a developer priority.
+ If you care about this, feel free to submit patches.
+
+77) Allow to configure the IP address used in outgoing connections.
+
+78) Allow to optionally use pcre's DFA algorithm.
+
+79) Evaluate pcre alternatives.
+
+80) Change FEATURE_EXTENDED_HOST_PATTERNS to support both
+ extended and vanilla host patterns at the same time.
+
+ Note that the requirement is to allow the user to decide
+ if the domain pattern should be interpreted as regex or
+ traditional host pattern and if it's not obvious that the
+ user made any decision, default to the latter.
+
+ Possible solutions would be:
+
+ 1. An always-use-regex-domain-patterns config option
+ 2. An enable-regex-domain-patterns-for-this-action-file option
+ 3. An enable-regex-domain-patterns-for-this-action-file-until-the-user-says-otherwise option
+ 4. A treat-the-domain-pattern-in-this-line-as-regex(-or-not) option
+ 5. Combinations of the options above
+
+ With 2+4, 3+4 or 2+3+4 being the preferences until
+ further discussion.
+
+82) Detect if the system time goes back in time let the user
+ know if it caused any connections to get closed.
+
+84) Flesh out the user-manual delivery to serve pages from
+ other directories, too.
+
+85) Once #84 is done, write a script that populates a directory with
+ various common third-party icons (stumbleupon.png, facebook.png ...)
+ and redirect requests for them to Privoxy.
+
+86) Add a server-body-tagger action. This is trivial as as all the
+ functionality required to do it already exists.
+
+87) Add a client-body-tagger action. This is less trivial as we currently
+ don't buffer client bodies. After 14) is implemented it would be
+ trivial, though.
+
+88) Investigate if there's a Perl module that Privoxy-Regression-Test
+ could optionally use to keep connections alive, preferably while
+ requiring less forks at the same time.
+
+89) When multiple block actions apply, consider showing all the block
+ reasons on the blocked page that haven't been overruled, not just
+ the last one.
+
+91) Add an optional limit for internal redirects. It would probably
+ be reasonable to default to a limit of one and showing an error
+ message if the request for the redirect URL would be redirected
+ again.
+
+92) The statistics currently aren't calculated correctly by Privoxy
+ as each thread is only counted as one request which is no longer
+ correct. This should be fixed, or the statistic code removed.
+ Privoxy-Log-Parser's provides more detailed statistics, anyway.
+
+93) Add a config directive to let Privoxy explicitly request either
+ IPv4 (or IPv6) addresses, even if the system supports both.
+ Could be useful as a workaround for misconfigured setups where the
+ libc returns IPv6 addresses even if there's no IPv6 connectivity.
+
+94) Add a config directive to let Privoxy prefer either IPv4 (or IPv6)
+ addresses, instead of trusting the libc to return them in an order
+ that makes sense. Like #93, this could be useful as a workaround
+ for misconfigured setups.
+
+95) Support a non-standard client header in CONNECT requests that
+ contains the URL of the requested resource, which is then treated
+ like the request URL.
+
+ This way the client could opt-in for path-based blocking of https
+ requests. Given that the headers from the CONNECT request aren't
+ forwarded to the destination server, an unencrypted URL should be
+ acceptable if the client and Privoxy are running on the same system
+ or in a trusted environment.
+
+96) Filters should be easier to look up. Currently get_filter() has to
+ go through all filters and skip the filter types the caller isn't
+ interested in.
+
+98) When showing action section on the CGI pages, properly escape
+ line breaks so they can be copy&pasted into action files without
+ adjustments.
+
+99) Figure out a mechanism through which a user can easily enable
+ site-specific action sections that are too aggressive to be
+ enabled by default. This could be similar to the presettings
+ in default.action, but could also be just another action file
+ that isn't used by default.
+
+100) Create a cross-platform Privoxy control program and retire
+ the win32 GUI. Integrate support for Privoxy-Regression-Test,
+ Privoxy-Log-Parser, Privoxy-Filter-Test, uagen and similar tools.
+
+102) Add an include directive to split the config file into several parts.
+
+103) Potential performance improvement for large action files:
+ when figuring out which actions apply, check the action bit mask
+ before pattern matching and skip section that wouldn't modify the
+ actions already set. To increase the impact the sections would have
+ to be applied in reverse.
+
+104) The code to modify global_toggle_state should be factored out into
+ a separate function. Currently we mess with it in three different
+ files, but only in w32log.c the tray icon is explicitly set.
+ The logging is inconsistent as well. For details see #3525694.
+
+105) Add support for socks authentication.
+
+106) actionlist.h should be embedded in a way that causes less text
+ segment bloat.
+
+107) Support more pcrs variables, for example $destination-ip-address
+ and $source-ip-address.
+
+108) Allow to use a somewhat random string instead of PRIVOXY-FORCE.
+
+109) Let log_error() support the format specifier %S which should
+ work like %s but escape new lines like %N. This would be useful
+ to log the result of header filters which may inject new lines.
+
+110) Add a global-buffer-limit directive that roughly limits how
+ much malloc'ed memory Privoxy will use and can potentially
+ be smaller than (buffer-limit * max-client-connections).
+
+111) Reject requests if hosts and ports in request line and Host
+ header don't match (before filters have been applied).
+
+112) If a header filter is used to inject another header by inserting
+ a \r\n (undocumented feature), detect it and split the headers so
+ following header actions do not treat them as a single string.
+ Alternatively add another header injection mechanism.
+
+113) Log statistics upon receiving a certain signal (SIGINFO or SIGUSR1).
+
+114) Properly deal with status code 100. The current "Continue hack"
+ can cause problems for gpg when uploading keys through Privoxy.
+
+115) Add ICAP (RFC 3507) support. FR #3615158.
+
+116) Due to the use of sscanf(), Privoxy currently will fail to properly
+ parse chunks whose size can't be represented with 32 bit. This is
+ unlikely to cause problems in the real world, but should eventually
+ be fixed anyway. See also:
+ https://bugzilla.mozilla.org/show_bug.cgi?id=959100
+
+118) There should be "escaped" dynamic variables that are guaranteed
+ not to break filters.
+
+119) Evaluate using pcre's jit mode.
+
+120) Add an option to limit pcre's recursion limit below the default.
+ On some platforms the recursion limit doesn't prevent pcre from
+ running out of stack space, causing the kernel to kill Privoxy
+ ungracefully.
+
+121) Add HTTP/2 support. As a first step, incomming HTTP/1.x requests
+ should be translated to outgoing HTTP/2 requests where possible
+ (and if desired by the user).
+
+122) Allow customized log messages.
+
+123) Evaluate if the voluntarily-disclose-session-keys option in Firefox
+ (and other browsers) can be leveraged. Probably depends on #16.
+
+124) Add support for the "lightweight OS capability and sandbox framework"
+ Capsicum. http://www.cl.cam.ac.uk/research/security/capsicum/
+
+125) Allow clients to HTTPS-encrypt the proxy connection.
+
+126) Run the Co-Advisor HTTP compliance tests, evaluate the results,
+ fix the compliance issues that aren't by design and document
+ the rest.
+ Note that Privoxy developers qualified for free account upgrades:
+ http://coad.measurement-factory.com/details.html#pricing
+
+##########################################################################
+
+Hosting wish list (relevant for #53)
+
+What we need:
+
+- Bug tracker
+- Mailinglists (Mailman with public archives preferred)
+- Webspace (on a Unix-like OS that works with the webserver targets
+ in GNUMakefile)
+- Source code repositories (currently CVS, but migrating away
+ from it is TODO #54 anyway and shouldn't be too much trouble)
+- Commit mails (preferably with unified diffs)
+
+(Unsorted) details to look at when evaluating hosters:
+
+1. Preferably no third-party ads and trackers.
+ External images, CSS and JavaScript may count as trackers
+ but texts like "supported by company XYZ" may be acceptable.
+
+2. JavaScript should be optional or not used at all.
+
+3. Services we don't need shouldn't be enabled anyway.
+ (We currently don't use Web forums, wikis, surveys etc.)
+
+4. It would be preferable if the hoster didn't have a bad track
+ record as far as user experience, security and privacy are
+ concerned and if the terms of service are "reasonable" and
+ haven't changed too often in the past. Updates in the past
+ should have been improvements and not regressions.
+
+5. It would be preferable if most of the server administration
+ is done by a trusted third-party (or at least not a lot of work
+ for us).
+
+6. The server(s) should be located in a country with laws we can
+ understand and follow (or at least not unintentionally violate).
+
+7. A server location in a country with some kind of due process
+ and strong data protection laws (at least on paper) would be
+ preferable.
+
+8. Given that Privoxy is a free software project it would be
+ preferable if the hoster would use free software where possible.
+
+9. Migrating away from the hoster in the future without losing
+ any important data should be possible without writing web
+ scrapers first.
projects / privoxy.git / blobdiff