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->Privoxy 3.0.6 User Manual</TH
+>Privoxy 3.0.17 User Manual</TH
></TR
><TR
><TD
CLASS="SECT1"
><A
NAME="ACTIONS-FILE"
-></A
->8. Actions Files</H1
+>8. Actions Files</A
+></H1
><P
> The actions files are used to define what <SPAN
CLASS="emphasis"
CLASS="APPLICATION"
>Privoxy</SPAN
> with
- differing purposes:
- </P
+ differing purposes:</P
><P
+> <P
></P
><UL
><LI
><P
-> <TT
+> <TT
+CLASS="FILENAME"
+>match-all.action</TT
+> - is used to define which
+ <SPAN
+CLASS="QUOTE"
+>"actions"</SPAN
+> relating to banner-blocking, images, pop-ups,
+ content modification, cookie handling etc should be applied by default.
+ It should be the first actions file loaded
+ </P
+></LI
+><LI
+><P
+> <TT
CLASS="FILENAME"
>default.action</TT
-> - is the primary action file
- that sets the initial values for all actions. It is intended to
- provide a base level of functionality for
- <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> array of features. So it is
- a set of broad rules that should work reasonably well as-is for most users.
- This is the file that the developers are keeping updated, and <A
-HREF="installation.html#INSTALLATION-KEEPUPDATED"
->making available to users</A
->.
- The user's preferences as set in <TT
+> - defines many exceptions (both
+ positive and negative) from the default set of actions that's configured
+ in <TT
CLASS="FILENAME"
->standard.action</TT
->,
- e.g. either <TT
-CLASS="LITERAL"
->Cautious</TT
-> (the default),
- <TT
-CLASS="LITERAL"
->Medium</TT
->, or <TT
-CLASS="LITERAL"
->Advanced</TT
-> (see
- below).
- </P
+>match-all.action</TT
+>. It is a set of rules that should
+ work reasonably well as-is for most users. This file is only supposed to
+ be edited by the developers. It should be the second actions file loaded.
+ </P
></LI
><LI
><P
-> <TT
+> <TT
CLASS="FILENAME"
>user.action</TT
> - is intended to be for local site
- preferences and exceptions. As an example, if your ISP or your bank
- has specific requirements, and need special handling, this kind of
- thing should go here. This file will not be upgraded.
- </P
+ preferences and exceptions. As an example, if your ISP or your bank
+ has specific requirements, and need special handling, this kind of
+ thing should go here. This file will not be upgraded.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="FILENAME"
->standard.action</TT
-> - is used only by the web based editor
- at <A
-HREF="http://config.privoxy.org/edit-actions-list?f=default"
-TARGET="_top"
-> http://config.privoxy.org/edit-actions-list?f=default</A
->,
- to set various pre-defined sets of rules for the default actions section
- in <TT
-CLASS="FILENAME"
->default.action</TT
->.
- </P
-><P
-> <SPAN
+> <SPAN
CLASS="GUIBUTTON"
>Edit</SPAN
> <SPAN
CLASS="GUIBUTTON"
>Set to Advanced</SPAN
>
- </P
+ </P
><P
-> These have increasing levels of aggressiveness <SPAN
+> These have increasing levels of aggressiveness <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>and have no
- influence on your browsing unless you select them explicitly in the
- editor</I
+ influence on your browsing unless you select them explicitly in the
+ editor</I
></SPAN
>. A default installation should be pre-set to
- <TT
+ <TT
CLASS="LITERAL"
>Cautious</TT
-> (versions prior to 3.0.5 were set to
- <TT
-CLASS="LITERAL"
->Medium</TT
->). New users should try this for a while before
- adjusting the settings to more aggressive levels. The more aggressive
- the settings, then the more likelihood there is of problems such as sites
- not working as they should.
- </P
+>. New users should try this for a while before
+ adjusting the settings to more aggressive levels. The more aggressive
+ the settings, then the more likelihood there is of problems such as sites
+ not working as they should.
+ </P
><P
-> The <SPAN
+> The <SPAN
CLASS="GUIBUTTON"
>Edit</SPAN
> button allows you to turn each
- action on/off individually for fine-tuning. The <SPAN
+ action on/off individually for fine-tuning. The <SPAN
CLASS="GUIBUTTON"
>Cautious</SPAN
>
- button changes the actions list to low/safe settings which will activate
- ad blocking and a minimal set of <SPAN
+ button changes the actions list to low/safe settings which will activate
+ ad blocking and a minimal set of <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
>'s features, and subsequently
- there will be less of a chance for accidental problems. The
- <SPAN
+ there will be less of a chance for accidental problems. The
+ <SPAN
CLASS="GUIBUTTON"
>Medium</SPAN
> button sets the list to a medium level of
- other features and a low level set of privacy features. The
- <SPAN
+ other features and a low level set of privacy features. The
+ <SPAN
CLASS="GUIBUTTON"
>Advanced</SPAN
> button sets the list to a high level of
- ad blocking and medium level of privacy. See the chart below. The latter
- three buttons over-ride any changes via with the
- <SPAN
+ ad blocking and medium level of privacy. See the chart below. The latter
+ three buttons over-ride any changes via with the
+ <SPAN
CLASS="GUIBUTTON"
>Edit</SPAN
> button. More fine-tuning can be done in the
- lower sections of this internal page.
- </P
+ lower sections of this internal page.
+ </P
><P
-> It is not recommend to edit the <TT
-CLASS="FILENAME"
->standard.action</TT
-> file
- itself.
- </P
+> While the actions file editor allows to enable these settings in all
+ actions files, they are only supposed to be enabled in the first one
+ to make sure you don't unintentionally overrule earlier rules.
+ </P
><P
-> The default profiles, and their associated actions, as pre-defined in
- <TT
+> The default profiles, and their associated actions, as pre-defined in
+ <TT
CLASS="FILENAME"
->standard.action</TT
+>default.action</TT
> are:
- </P
+ </P
><P
> <DIV
CLASS="TABLE"
><A
-NAME="AEN2003"
+NAME="AEN2534"
></A
><P
><B
></P
><TABLE
BORDER="1"
+FRAME="border"
+RULES="all"
CLASS="CALSTABLE"
-><THEAD
+><COL
+WIDTH="1*"
+TITLE="C1"><COL
+WIDTH="1*"
+TITLE="C2"><COL
+WIDTH="1*"
+TITLE="C3"><COL
+WIDTH="1*"
+TITLE="C4"><THEAD
><TR
><TH
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Feature</TH
><TH
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Cautious</TH
><TH
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Medium</TH
><TH
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Advanced</TH
></TR
></THEAD
><TBODY
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Ad-blocking Aggressiveness</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>medium</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>high</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>high</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Ad-filtering by size</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Ad-filtering by link</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Pop-up killing</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>blocks only</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>blocks only</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>blocks only</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Privacy Features</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>low</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>medium</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>medium/high</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Cookie handling</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>none</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>session-only</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>kill</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Referer forging</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>GIF de-animation</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Fast redirects</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>HTML taming</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>JavaScript taming</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Web-bug killing</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
><TR
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>Image tag reordering</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>no</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
->no</TD
+>yes</TD
><TD
-WIDTH="25%"
-ALIGN="LEFT"
-VALIGN="TOP"
>yes</TD
></TR
></TBODY
</P
></LI
></UL
->
- </P
+></P
><P
> The list of actions files to be used are defined in the main configuration
file, and are processed in the order they are defined (e.g.
<TT
CLASS="FILENAME"
>default.action</TT
-> is typically process before
+> is typically processed before
<TT
CLASS="FILENAME"
>user.action</TT
>http://config.privoxy.org/show-status</A
>.
The over-riding principle when applying actions, is that the last action that
- matches a given URL, wins. The broadest, most general rules go first
+ matches a given URL wins. The broadest, most general rules go first
(defined in <TT
CLASS="FILENAME"
>default.action</TT
CLASS="FILENAME"
>default.action</TT
>,
- with the advantage that is a separate file, which makes preserving your
+ with the advantage that it is a separate file, which makes preserving your
personal settings across <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
><P
>
Actions can be used to block anything you want, including ads, banners, or
- just some obnoxious URL that you would rather not see. Cookies can be accepted
+ just some obnoxious URL whose content you would rather not see. Cookies can be accepted
or rejected, or accepted only during the current browser session (i.e. not
- written to disk), content can be modified, JavaScripts tamed, user-tracking
+ written to disk), content can be modified, some JavaScripts tamed, user-tracking
fooled, and much more. See below for a <A
HREF="actions-file.html#ACTIONS"
>complete list
><H2
CLASS="SECT2"
><A
-NAME="AEN2102"
-></A
->8.1. Finding the Right Mix</H2
+NAME="AEN2633"
+>8.1. Finding the Right Mix</A
+></H2
><P
> Note that some <A
HREF="actions-file.html#ACTIONS"
will have to make later. If, for example, you want to crunch all cookies per
default, you'll have to make exceptions from that rule for sites that you
regularly use and that require cookies for actually useful purposes, like maybe
- your bank, favorite shop, or newspaper. </P
+ your bank, favorite shop, or newspaper.</P
><P
> We have tried to provide you with reasonable rules to start from in the
distribution actions files. But there is no general rule of thumb on these
><H2
CLASS="SECT2"
><A
-NAME="AEN2109"
-></A
->8.2. How to Edit</H2
+NAME="AEN2640"
+>8.2. How to Edit</A
+></H2
><P
> The easiest way to edit the actions files is with a browser by
using our browser-based editor, which can be reached from <A
TARGET="_top"
>http://config.privoxy.org/show-status</A
>.
- The editor allows both fine-grained control over every single feature on a
- per-URL basis, and easy choosing from wholesale sets of defaults like
- <SPAN
+ Note: the config file option <A
+HREF="config.html#ENABLE-EDIT-ACTIONS"
+>enable-edit-actions</A
+> must be enabled for
+ this to work. The editor allows both fine-grained control over every single
+ feature on a per-URL basis, and easy choosing from wholesale sets of defaults
+ like <SPAN
CLASS="QUOTE"
>"Cautious"</SPAN
>, <SPAN
CLASS="QUOTE"
>"Medium"</SPAN
-> or <SPAN
+> or
+ <SPAN
CLASS="QUOTE"
>"Advanced"</SPAN
->.
- Warning: the <SPAN
+>. Warning: the <SPAN
CLASS="QUOTE"
>"Advanced"</SPAN
-> setting is more aggressive, and
- will be more likely to cause problems for some sites. Experienced users only!</P
+> setting is more
+ aggressive, and will be more likely to cause problems for some sites.
+ Experienced users only!
+ </P
><P
> If you prefer plain text editing to GUIs, you can of course also directly edit the
the actions files with your favorite text editor. Look at
CLASS="SECT2"
><A
NAME="ACTIONS-APPLY"
-></A
->8.3. How Actions are Applied to URLs</H2
+>8.3. How Actions are Applied to Requests</A
+></H2
><P
> Actions files are divided into sections. There are special sections,
like the <SPAN
be discussed later. For now let's concentrate on regular sections: They have a
heading line (often split up to multiple lines for readability) which consist
of a list of actions, separated by whitespace and enclosed in curly braces.
- Below that, there is a list of URL patterns, each on a separate line.</P
+ Below that, there is a list of URL and tag patterns, each on a separate line.</P
><P
> To determine which actions apply to a request, the URL of the request is
- compared to all patterns in each <SPAN
+ compared to all URL patterns in each <SPAN
CLASS="QUOTE"
>"action file"</SPAN
-> file. Every time it matches, the list of
- applicable actions for the URL is incrementally updated, using the heading
- of the section in which the pattern is located. If multiple matches for
- the same URL set the same action differently, the last match wins. If not,
- the effects are aggregated. E.g. a URL might match a regular section with
- a heading line of <TT
+>.
+ Every time it matches, the list of applicable actions for the request is
+ incrementally updated, using the heading of the section in which the
+ pattern is located. The same is done again for tags and tag patterns later on.</P
+><P
+> If multiple applying sections set the same action differently,
+ the last match wins. If not, the effects are aggregated.
+ E.g. a URL might match a regular section with a heading line of <TT
CLASS="LITERAL"
>{
+<A
>handle-as-image</TT
> +<TT
CLASS="LITERAL"
->block</TT
+>block{Banner ads.}</TT
> }
# Block these as if they were images. Send no block page.
banners.example.com
>
</P
><P
-> You can trace this process for any given URL by visiting <A
+> You can trace this process for
URL patterns and any given URL by visiting <A
HREF="http://config.privoxy.org/show-url-info"
TARGET="_top"
>http://config.privoxy.org/show-url-info</A
CLASS="SECT2"
><A
NAME="AF-PATTERNS"
-></A
->8.4. Patterns</H2
+>8.4. Patterns</A
+></H2
><P
>
As mentioned, <SPAN
flexibility. This allows one expression to be expanded and potentially match
against many similar patterns.</P
><P
-> Generally, a <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> pattern has the form
+> Generally, an URL pattern has the form
<TT
CLASS="LITERAL"
-><domain>/<path></TT
->, where both the
+><domain><port>/<path></TT
+>, where the
<TT
CLASS="LITERAL"
><domain></TT
-> and <TT
+>, the <TT
+CLASS="LITERAL"
+><port></TT
+>
+ and the <TT
CLASS="LITERAL"
><path></TT
-> are
- optional. (This is why the special <TT
+> are optional. (This is why the special
+ <TT
CLASS="LITERAL"
>/</TT
-> pattern matches all
- URLs). Note that the protocol portion of the URL pattern (e.g.
- <TT
+> pattern matches all URLs). Note that the protocol
+ portion of the URL pattern (e.g. <TT
CLASS="LITERAL"
>http://</TT
->) should <SPAN
+>) should
+ <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>not</I
></SPAN
-> be included in
- the pattern. This is assumed already!</P
+> be included in the pattern. This is assumed already!</P
><P
> The pattern matching syntax is different for the domain and path parts of
the URL. The domain part uses a simple globbing type matching technique,
- while the path part uses a more flexible
+ while the path part uses more flexible
<A
HREF="http://en.wikipedia.org/wiki/Regular_expressions"
TARGET="_top"
><SPAN
CLASS="QUOTE"
>"Regular
- Expressions (PCRE)"</SPAN
+ Expressions"</SPAN
></A
-> based syntax.</P
+> (POSIX 1003.2).</P
+><P
+> The port part of a pattern is a decimal port number preceded by a colon
+ (<TT
+CLASS="LITERAL"
+>:</TT
+>). If the domain part contains a numerical IPv6 address,
+ it has to be put into angle brackets
+ (<TT
+CLASS="LITERAL"
+><</TT
+>, <TT
+CLASS="LITERAL"
+>></TT
+>).</P
><P
></P
><DIV
></DT
><DD
><P
+> matches all the documents on <TT
+CLASS="LITERAL"
+>www.example.com</TT
+>
+ whose name starts with <TT
+CLASS="LITERAL"
+>/index.html</TT
+>.
+ </P
+></DD
+><DT
+><TT
+CLASS="LITERAL"
+>www.example.com/index.html$</TT
+></DT
+><DD
+><P
> matches only the single document <TT
CLASS="LITERAL"
>/index.html</TT
><DT
><TT
CLASS="LITERAL"
->/index.html</TT
+>/index.html$</TT
></DT
><DD
><P
><DT
><TT
CLASS="LITERAL"
+>/</TT
+></DT
+><DD
+><P
+> Matches any URL because there's no requirement for either the
+ domain or the path to match anything.
+ </P
+></DD
+><DT
+><TT
+CLASS="LITERAL"
+>:8000/</TT
+></DT
+><DD
+><P
+> Matches any URL pointing to TCP port 8000.
+ </P
+></DD
+><DT
+><TT
+CLASS="LITERAL"
+><2001:db8::1>/</TT
+></DT
+><DD
+><P
+> Matches any URL with the host address <TT
+CLASS="LITERAL"
+>2001:db8::1</TT
+>.
+ (Note that the real URL uses plain brackets, not angle brackets.)
+ </P
+></DD
+><DT
+><TT
+CLASS="LITERAL"
>index.html</TT
></DT
><DD
><P
-> matches nothing, since it would be interpreted as a domain name and
+> matches nothing, since it would be interpreted as a domain name and
there is no top-level domain called <TT
CLASS="LITERAL"
>.html</TT
><H3
CLASS="SECT3"
><A
-NAME="AEN2192"
-></A
->8.4.1. The Domain Pattern</H3
+NAME="AEN2752"
+>8.4.1. The Domain Pattern</A
+></H3
><P
> The matching of the domain part offers some flexible options: if the
domain starts or ends with a dot, it becomes unanchored at that end.
></DT
><DD
><P
-> matches any domain that <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->ENDS</I
-></SPAN
-> in
- <TT
+> matches any domain with first-level domain <TT
CLASS="LITERAL"
->.example.com</TT
+>com</TT
>
+ and second-level domain <TT
+CLASS="LITERAL"
+>example</TT
+>.
+ For example <TT
+CLASS="LITERAL"
+>www.example.com</TT
+>,
+ <TT
+CLASS="LITERAL"
+>example.com</TT
+> and <TT
+CLASS="LITERAL"
+>foo.bar.baz.example.com</TT
+>.
+ Note that it wouldn't match if the second-level domain was <TT
+CLASS="LITERAL"
+>another-example</TT
+>.
</P
></DD
><DT
<TT
CLASS="LITERAL"
>www.</TT
->
+> (It also matches the domain
+ <TT
+CLASS="LITERAL"
+>www</TT
+> but most of the time that doesn't matter.)
</P
></DD
><DT
><H3
CLASS="SECT3"
><A
-NAME="AEN2263"
-></A
->8.4.2. The Path Pattern</H3
+NAME="AEN2828"
+>8.4.2. The Path Pattern</A
+></H3
><P
> <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
-> uses Perl compatible (PCRE)
+> uses <SPAN
+CLASS="QUOTE"
+>"modern"</SPAN
+> POSIX 1003.2
<A
HREF="http://en.wikipedia.org/wiki/Regular_expressions"
TARGET="_top"
><SPAN
CLASS="QUOTE"
>"Regular
- Expression"</SPAN
+ Expressions"</SPAN
></A
-> based syntax
- (through the <A
-HREF="http://www.pcre.org/"
-TARGET="_top"
->PCRE</A
-> library) for
- matching the path portion (after the slash), and is thus more flexible.</P
+> for matching the path portion (after the slash),
+ and is thus more flexible.</P
><P
> There is an <A
HREF="appendix.html#REGEX"
>Appendix</A
> with a brief quick-start into regular
- expressions, and full (very technical) documentation on PCRE regex syntax is available on-line
- at <A
-HREF="http://www.pcre.org/man.txt"
-TARGET="_top"
->http://www.pcre.org/man.txt</A
->.
- You might also find the Perl man page on regular expressions (<TT
+ expressions, you also might want to have a look at your operating system's documentation
+ on regular expressions (try <TT
CLASS="LITERAL"
->man perlre</TT
->)
- useful, which is available on-line at <A
-HREF="http://perldoc.perl.org/perlre.html"
-TARGET="_top"
->http://perldoc.perl.org/perlre.html</A
->.</P
+>man re_format</TT
+>).</P
><P
> Note that the path pattern is automatically left-anchored at the <SPAN
CLASS="QUOTE"
><DT
><TT
CLASS="LITERAL"
->.example.com/.*/index.html</TT
+>.example.com/.*/index.html$</TT
></DT
><DD
><P
><DT
><TT
CLASS="LITERAL"
->.example.com/(.*/)?index\.html</TT
+>.example.com/(.*/)?index\.html$</TT
></DT
><DD
><P
>Appendix on regular expressions</A
>.</P
></DIV
-></DIV
><DIV
-CLASS="SECT2"
-><H2
-CLASS="SECT2"
+CLASS="SECT3"
+><H3
+CLASS="SECT3"
><A
-NAME="ACTIONS"
-></A
->8.5. Actions</H2
+NAME="TAG-PATTERN"
+>8.4.3. The Tag Pattern</A
+></H3
><P
-> All actions are disabled by default, until they are explicitly enabled
- somewhere in an actions file. Actions are turned on if preceded with a
- <SPAN
+> Tag patterns are used to change the applying actions based on the
+ request's tags. Tags can be created with either the
+ <A
+HREF="actions-file.html#CLIENT-HEADER-TAGGER"
+>client-header-tagger</A
+>
+ or the <A
+HREF="actions-file.html#SERVER-HEADER-TAGGER"
+>server-header-tagger</A
+> action.</P
+><P
+> Tag patterns have to start with <SPAN
CLASS="QUOTE"
->"+"</SPAN
->, and turned off if preceded with a <SPAN
+>"TAG:"</SPAN
+>, so <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+>
+ can tell them apart from URL patterns. Everything after the colon
+ including white space, is interpreted as a regular expression with
+ path pattern syntax, except that tag patterns aren't left-anchored
+ automatically (<SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> doesn't silently add a <SPAN
CLASS="QUOTE"
->"-"</SPAN
->. So a
- <TT
-CLASS="LITERAL"
->+action</TT
-> means <SPAN
+>"^"</SPAN
+>,
+ you have to do it yourself if you need it).</P
+><P
+> To match all requests that are tagged with <SPAN
+CLASS="QUOTE"
+>"foo"</SPAN
+>
+ your pattern line should be <SPAN
+CLASS="QUOTE"
+>"TAG:^foo$"</SPAN
+>,
+ <SPAN
+CLASS="QUOTE"
+>"TAG:foo"</SPAN
+> would work as well, but it would also
+ match requests whose tags contain <SPAN
+CLASS="QUOTE"
+>"foo"</SPAN
+> somewhere.
+ <SPAN
+CLASS="QUOTE"
+>"TAG: foo"</SPAN
+> wouldn't work as it requires white space.</P
+><P
+> Sections can contain URL and tag patterns at the same time,
+ but tag patterns are checked after the URL patterns and thus
+ always overrule them, even if they are located before the URL patterns.</P
+><P
+> Once a new tag is added, Privoxy checks right away if it's matched by one
+ of the tag patterns and updates the action settings accordingly. As a result
+ tags can be used to activate other tagger actions, as long as these other
+ taggers look for headers that haven't already be parsed.</P
+><P
+> For example you could tag client requests which use the
+ <TT
+CLASS="LITERAL"
+>POST</TT
+> method,
+ then use this tag to activate another tagger that adds a tag if cookies
+ are sent, and then use a block action based on the cookie tag. This allows
+ the outcome of one action, to be input into a subsequent action. However if
+ you'd reverse the position of the described taggers, and activated the
+ method tagger based on the cookie tagger, no method tags would be created.
+ The method tagger would look for the request line, but at the time
+ the cookie tag is created, the request line has already been parsed.</P
+><P
+> While this is a limitation you should be aware of, this kind of
+ indirection is seldom needed anyway and even the example doesn't
+ make too much sense.</P
+></DIV
+></DIV
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="ACTIONS"
+>8.5. Actions</A
+></H2
+><P
+> All actions are disabled by default, until they are explicitly enabled
+ somewhere in an actions file. Actions are turned on if preceded with a
+ <SPAN
+CLASS="QUOTE"
+>"+"</SPAN
+>, and turned off if preceded with a <SPAN
+CLASS="QUOTE"
+>"-"</SPAN
+>. So a
+ <TT
+CLASS="LITERAL"
+>+action</TT
+> means <SPAN
CLASS="QUOTE"
>"do that action"</SPAN
>, e.g.
>
Example: <TT
CLASS="LITERAL"
->+block</TT
+>+handle-as-image</TT
>
</P
></LI
>
Example: <TT
CLASS="LITERAL"
->+hide-user-agent{ Mozilla 1.0 }</TT
+>+hide-user-agent{Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.8.1.4) Gecko/20070602 Firefox/2.0.0.4}</TT
>
</P
></LI
CLASS="APPLICATION"
>Privoxy</SPAN
> would just be a
- normal, non-blocking, non-anonymizing proxy. You must specifically enable the
+ normal, non-blocking, non-filtering proxy. You must specifically enable the
privacy and blocking features you need (although the provided default actions
files will give a good starting point).</P
><P
-> Later defined actions always over-ride earlier ones. So exceptions
- to any rules you make, should come in the latter part of the file (or
+> Later defined action sections always over-ride earlier ones of the same type.
+ So exceptions to any rules you make, should come in the latter part of the file (or
in a file that is processed later when using multiple actions files such
as <TT
CLASS="FILENAME"
CLASS="SECT3"
><A
NAME="ADD-HEADER"
-></A
->8.5.1. add-header</H4
+>8.5.1. add-header</A
+></H4
><P
></P
><DIV
> are, you definitely don't need to worry about this
one.
</P
+><P
+> Headers added by this action are not modified by other actions.
+ </P
></DD
><DT
>Example usage:</DT
CLASS="SECT3"
><A
NAME="BLOCK"
-></A
->8.5.2. block</H4
+>8.5.2. block</A
+></H4
><P
></P
><DIV
>Type:</DT
><DD
><P
->Boolean.</P
+>Parameterized.</P
></DD
><DT
>Parameter:</DT
><DD
><P
->N/A</P
+>A block reason that should be given to the user.</P
></DD
><DT
>Notes:</DT
CLASS="QUOTE"
>"BLOCKED"</SPAN
> page
- for requests to blocked pages. This page contains links to find out why the request
- was blocked, and a click-through to the blocked content (the latter only if compiled with the
- force feature enabled). The <SPAN
-CLASS="QUOTE"
->"BLOCKED"</SPAN
-> page adapts to the available
- screen space -- it displays full-blown if space allows, or miniaturized and text-only
- if loaded into a small frame or window. If you are using <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- right now, you can take a look at the
- <A
-HREF="http://ads.bannerserver.example.com/nasty-ads/sponsor.html"
-TARGET="_top"
-><SPAN
-CLASS="QUOTE"
->"BLOCKED"</SPAN
->
- page</A
->.
+ for requests to blocked pages. This page contains the block reason given as
+ parameter, a link to find out why the block action applies, and a click-through
+ to the blocked content (the latter only if the force feature is available and
+ enabled).
</P
><P
>
><TD
><PRE
CLASS="SCREEN"
->{+block}
+>{+block{No nasty stuff for you.}}
# Block and replace with "blocked" page
.nasty-stuff.example.com
-{+block +handle-as-image}
+{+block{Doubleclick banners.} +handle-as-image}
# Block and replace with image
.ad.doubleclick.net
.ads.r.us/banners/
-{+block +handle-as-empty-document}
+{+block{Layered ads.} +handle-as-empty-document}
# Block and then ignore
- adserver.exampleclick.net/.*\.js$</PRE
+ adserver.example.net/.*\.js$</PRE
></TD
></TR
></TABLE
><H4
CLASS="SECT3"
><A
-NAME="CONTENT-TYPE-OVERWRITE"
-></A
->8.5.3. content-type-overwrite</H4
+NAME="CHANGE-X-FORWARDED-FOR"
+>8.5.3. change-x-forwarded-for</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
->Stop useless download menus from popping up, or change the browser's rendering mode</P
+>Improve privacy by not forwarding the source of the request in the HTTP headers.</P
></DD
><DT
>Effect:</DT
><DD
><P
-> Replaces the <SPAN
+> Deletes the <SPAN
CLASS="QUOTE"
->"Content-Type:"</SPAN
-> HTTP server header.
+>"X-Forwarded-For:"</SPAN
+> HTTP header from the client request,
+ or adds a new one.
</P
></DD
><DT
>Parameter:</DT
><DD
><P
-> Any string.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> The <SPAN
-CLASS="QUOTE"
->"Content-Type:"</SPAN
-> HTTP server header is used by the
- browser to decide what to do with the document. The value of this
- header can cause the browser to open a download menu instead of
- displaying the document by itself, even if the document's format is
- supported by the browser.
- </P
-><P
-> The declared content type can also affect which rendering mode
- the browser chooses. If XHTML is delivered as <SPAN
-CLASS="QUOTE"
->"text/html"</SPAN
->,
- many browsers treat it as yet another broken HTML document.
- If it is send as <SPAN
-CLASS="QUOTE"
->"application/xml"</SPAN
->, browsers with
- XHTML support will only display it, if the syntax is correct.
- </P
+></P
+><UL
+><LI
><P
-> If you see a web site that proudly uses XHTML buttons, but sets
- <SPAN
-CLASS="QUOTE"
->"Content-Type: text/html"</SPAN
->, you can use <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- to overwrite it with <SPAN
+><SPAN
CLASS="QUOTE"
->"application/xml"</SPAN
-> and validate
- the web master's claim inside your XHTML-supporting browser.
- If the syntax is incorrect, the browser will complain loudly.
- </P
+>"block"</SPAN
+> to delete the header.</P
+></LI
+><LI
><P
-> You can also go the opposite direction: if your browser prints
- error messages instead of rendering a document falsely declared
- as XHTML, you can overwrite the content type with
- <SPAN
+> <SPAN
CLASS="QUOTE"
->"text/html"</SPAN
-> and have it rendered as broken HTML document.
- </P
+>"add"</SPAN
+> to create the header (or append
+ the client's IP address to an already existing one).
+ </P
+></LI
+></UL
+></DD
+><DT
+>Notes:</DT
+><DD
><P
-> By default <TT
-CLASS="LITERAL"
->content-type-overwrite</TT
-> only replaces
- <SPAN
-CLASS="QUOTE"
->"Content-Type:"</SPAN
-> headers that look like some kind of text.
- If you want to overwrite it unconditionally, you have to combine it with
- <TT
+> It is safe and recommended to use <TT
CLASS="LITERAL"
-><A
-HREF="actions-file.html#FORCE-TEXT-MODE"
->force-text-mode</A
-></TT
+>block</TT
>.
- This limitation exists for a reason, think twice before circumventing it.
- </P
-><P
-> Most of the time it's easier to enable
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER-SERVER-HEADERS"
->filter-server-headers</A
-></TT
->
- and replace this action with a custom regular expression. It allows you
- to activate it for every document of a certain site and it will still
- only replace the content types you aimed at.
</P
><P
-> Of course you can apply <TT
-CLASS="LITERAL"
->content-type-overwrite</TT
->
- to a whole site and then make URL based exceptions, but it's a lot
- more work to get the same precision.
+> Forwarding the source address of the request may make
+ sense in some multi-user setups but is also a privacy risk.
</P
></DD
><DT
->Example usage (sections):</DT
+>Example usage:</DT
><DD
><P
> <TABLE
><TD
><PRE
CLASS="SCREEN"
-># Check if www.example.net/ really uses valid XHTML
-{ +content-type-overwrite{application/xml} }
-www.example.net/
-
-# but leave the content type unmodified if the URL looks like a style sheet
-{-content-type-overwrite}
-www.example.net/*.\.css$
-www.example.net/*.style</PRE
+>+change-x-forwarded-for{block}</PRE
></TD
></TR
></TABLE
><H4
CLASS="SECT3"
><A
-NAME="CRUNCH-CLIENT-HEADER"
-></A
->8.5.4. crunch-client-header</H4
+NAME="CLIENT-HEADER-FILTER"
+>8.5.4. client-header-filter</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
->Remove a client header <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> has no dedicated action for.</P
+> Rewrite or remove single client headers.
+ </P
></DD
><DT
>Effect:</DT
><DD
><P
-> Deletes every header sent by the client that contains the string the user supplied as parameter.
+> All client headers to which this action applies are filtered on-the-fly through
+ the specified regular expression based substitutions.
</P
></DD
><DT
>Parameter:</DT
><DD
><P
-> Any string.
+> The name of a client-header filter, as defined in one of the
+ <A
+HREF="filter-file.html"
+>filter files</A
+>.
</P
></DD
><DT
>Notes:</DT
><DD
><P
-> This action allows you to block client headers for which no dedicated
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> action exists.
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> will remove every client header that
- contains the string you supplied as parameter.
+> Client-header filters are applied to each header on its own, not to
+ all at once. This makes it easier to diagnose problems, but on the downside
+ you can't write filters that only change header x if header y's value is z.
+ You can do that by using tags though.
</P
><P
-> Regular expressions are <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->not supported</I
-></SPAN
-> and you can't
- use this action to block different headers in the same request, unless
- they contain the same string.
+> Client-header filters are executed after the other header actions have finished
+ and use their output as input.
</P
><P
-> <TT
-CLASS="LITERAL"
->crunch-client-header</TT
-> is only meant for quick tests.
- If you have to block several different headers, or only want to modify
- parts of them, you should enable
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER-CLIENT-HEADERS"
->filter-client-headers</A
-></TT
->
- and create your own filter.
+> If the request URL gets changed, <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> will detect that and use the new
+ one. This can be used to rewrite the request destination behind the client's
+ back, for example to specify a Tor exit relay for certain requests.
</P
-><DIV
-CLASS="WARNING"
-><P
-></P
-><TABLE
-CLASS="WARNING"
-BORDER="1"
-WIDTH="90%"
-><TR
-><TD
-ALIGN="CENTER"
-><B
->Warning</B
-></TD
-></TR
-><TR
-><TD
-ALIGN="LEFT"
><P
-> Don't block any header without understanding the consequences.
- </P
-></TD
-></TR
-></TABLE
-></DIV
+> Please refer to the <A
+HREF="filter-file.html"
+>filter file chapter</A
+>
+ to learn which client-header filters are available by default, and how to
+ create your own.
+ </P
></DD
><DT
>Example usage (section):</DT
><TD
><PRE
CLASS="SCREEN"
-># Block the non-existent "Privacy-Violation:" client header
-{ +crunch-client-header{Privacy-Violation:} }
+># Hide Tor exit notation in Host and Referer Headers
+{+client-header-filter{hide-tor-exit-notation}}
/
</PRE
></TD
></TR
></TABLE
>
- </P
+ </P
></DD
></DL
></DIV
><H4
CLASS="SECT3"
><A
-NAME="CRUNCH-IF-NONE-MATCH"
-></A
->8.5.5. crunch-if-none-match</H4
+NAME="CLIENT-HEADER-TAGGER"
+>8.5.5. client-header-tagger</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
->Prevent yet another way to track the user's steps between sessions.</P
+> Block requests based on their headers.
+ </P
></DD
><DT
>Effect:</DT
><DD
><P
-> Deletes the <SPAN
-CLASS="QUOTE"
->"If-None-Match:"</SPAN
-> HTTP client header.
+> Client headers to which this action applies are filtered on-the-fly through
+ the specified regular expression based substitutions, the result is used as
+ tag.
</P
></DD
><DT
>Type:</DT
><DD
><P
->Boolean.</P
+>Parameterized.</P
></DD
><DT
>Parameter:</DT
><DD
><P
-> N/A
+> The name of a client-header tagger, as defined in one of the
+ <A
+HREF="filter-file.html"
+>filter files</A
+>.
+ </P
+></DD
+><DT
+>Notes:</DT
+><DD
+><P
+> Client-header taggers are applied to each header on its own,
+ and as the header isn't modified, each tagger <SPAN
+CLASS="QUOTE"
+>"sees"</SPAN
+>
+ the original.
+ </P
+><P
+> Client-header taggers are the first actions that are executed
+ and their tags can be used to control every other action.
+ </P
+></DD
+><DT
+>Example usage (section):</DT
+><DD
+><P
+> <TABLE
+BORDER="0"
+BGCOLOR="#E0E0E0"
+WIDTH="90%"
+><TR
+><TD
+><PRE
+CLASS="SCREEN"
+># Tag every request with the User-Agent header
+{+client-header-tagger{user-agent}}
+/
+
+# Tagging itself doesn't change the action
+# settings, sections with TAG patterns do:
+#
+# If it's a download agent, use a different forwarding proxy,
+# show the real User-Agent and make sure resume works.
+{+forward-override{forward-socks5 10.0.0.2:2222 .} \
+ -hide-if-modified-since \
+ -overwrite-last-modified \
+ -hide-user-agent \
+ -filter \
+ -deanimate-gifs \
+}
+TAG:^User-Agent: NetBSD-ftp/
+TAG:^User-Agent: Novell ZYPP Installer
+TAG:^User-Agent: RPM APT-HTTP/
+TAG:^User-Agent: fetch libfetch/
+TAG:^User-Agent: Ubuntu APT-HTTP/
+TAG:^User-Agent: MPlayer/
+ </PRE
+></TD
+></TR
+></TABLE
+>
+ </P
+></DD
+></DL
+></DIV
+></DIV
+><DIV
+CLASS="SECT3"
+><H4
+CLASS="SECT3"
+><A
+NAME="CONTENT-TYPE-OVERWRITE"
+>8.5.6. content-type-overwrite</A
+></H4
+><P
+></P
+><DIV
+CLASS="VARIABLELIST"
+><DL
+><DT
+>Typical use:</DT
+><DD
+><P
+>Stop useless download menus from popping up, or change the browser's rendering mode</P
+></DD
+><DT
+>Effect:</DT
+><DD
+><P
+> Replaces the <SPAN
+CLASS="QUOTE"
+>"Content-Type:"</SPAN
+> HTTP server header.
+ </P
+></DD
+><DT
+>Type:</DT
+><DD
+><P
+>Parameterized.</P
+></DD
+><DT
+>Parameter:</DT
+><DD
+><P
+> Any string.
+ </P
+></DD
+><DT
+>Notes:</DT
+><DD
+><P
+> The <SPAN
+CLASS="QUOTE"
+>"Content-Type:"</SPAN
+> HTTP server header is used by the
+ browser to decide what to do with the document. The value of this
+ header can cause the browser to open a download menu instead of
+ displaying the document by itself, even if the document's format is
+ supported by the browser.
+ </P
+><P
+> The declared content type can also affect which rendering mode
+ the browser chooses. If XHTML is delivered as <SPAN
+CLASS="QUOTE"
+>"text/html"</SPAN
+>,
+ many browsers treat it as yet another broken HTML document.
+ If it is send as <SPAN
+CLASS="QUOTE"
+>"application/xml"</SPAN
+>, browsers with
+ XHTML support will only display it, if the syntax is correct.
+ </P
+><P
+> If you see a web site that proudly uses XHTML buttons, but sets
+ <SPAN
+CLASS="QUOTE"
+>"Content-Type: text/html"</SPAN
+>, you can use <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+>
+ to overwrite it with <SPAN
+CLASS="QUOTE"
+>"application/xml"</SPAN
+> and validate
+ the web master's claim inside your XHTML-supporting browser.
+ If the syntax is incorrect, the browser will complain loudly.
+ </P
+><P
+> You can also go the opposite direction: if your browser prints
+ error messages instead of rendering a document falsely declared
+ as XHTML, you can overwrite the content type with
+ <SPAN
+CLASS="QUOTE"
+>"text/html"</SPAN
+> and have it rendered as broken HTML document.
+ </P
+><P
+> By default <TT
+CLASS="LITERAL"
+>content-type-overwrite</TT
+> only replaces
+ <SPAN
+CLASS="QUOTE"
+>"Content-Type:"</SPAN
+> headers that look like some kind of text.
+ If you want to overwrite it unconditionally, you have to combine it with
+ <TT
+CLASS="LITERAL"
+><A
+HREF="actions-file.html#FORCE-TEXT-MODE"
+>force-text-mode</A
+></TT
+>.
+ This limitation exists for a reason, think twice before circumventing it.
+ </P
+><P
+> Most of the time it's easier to replace this action with a custom
+ <TT
+CLASS="LITERAL"
+><A
+HREF="actions-file.html#SERVER-HEADER-FILTER"
+>server-header filter</A
+></TT
+>.
+ It allows you to activate it for every document of a certain site and it will still
+ only replace the content types you aimed at.
+ </P
+><P
+> Of course you can apply <TT
+CLASS="LITERAL"
+>content-type-overwrite</TT
+>
+ to a whole site and then make URL based exceptions, but it's a lot
+ more work to get the same precision.
+ </P
+></DD
+><DT
+>Example usage (sections):</DT
+><DD
+><P
+> <TABLE
+BORDER="0"
+BGCOLOR="#E0E0E0"
+WIDTH="90%"
+><TR
+><TD
+><PRE
+CLASS="SCREEN"
+># Check if www.example.net/ really uses valid XHTML
+{ +content-type-overwrite{application/xml} }
+www.example.net/
+
+# but leave the content type unmodified if the URL looks like a style sheet
+{-content-type-overwrite}
+www.example.net/.*\.css$
+www.example.net/.*style</PRE
+></TD
+></TR
+></TABLE
+>
+ </P
+></DD
+></DL
+></DIV
+></DIV
+><DIV
+CLASS="SECT3"
+><H4
+CLASS="SECT3"
+><A
+NAME="CRUNCH-CLIENT-HEADER"
+>8.5.7. crunch-client-header</A
+></H4
+><P
+></P
+><DIV
+CLASS="VARIABLELIST"
+><DL
+><DT
+>Typical use:</DT
+><DD
+><P
+>Remove a client header <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> has no dedicated action for.</P
+></DD
+><DT
+>Effect:</DT
+><DD
+><P
+> Deletes every header sent by the client that contains the string the user supplied as parameter.
+ </P
+></DD
+><DT
+>Type:</DT
+><DD
+><P
+>Parameterized.</P
+></DD
+><DT
+>Parameter:</DT
+><DD
+><P
+> Any string.
+ </P
+></DD
+><DT
+>Notes:</DT
+><DD
+><P
+> This action allows you to block client headers for which no dedicated
+ <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> action exists.
+ <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> will remove every client header that
+ contains the string you supplied as parameter.
+ </P
+><P
+> Regular expressions are <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>not supported</I
+></SPAN
+> and you can't
+ use this action to block different headers in the same request, unless
+ they contain the same string.
+ </P
+><P
+> <TT
+CLASS="LITERAL"
+>crunch-client-header</TT
+> is only meant for quick tests.
+ If you have to block several different headers, or only want to modify
+ parts of them, you should use a
+ <TT
+CLASS="LITERAL"
+><A
+HREF="actions-file.html#CLIENT-HEADER-FILTER"
+>client-header filter</A
+></TT
+>.
+ </P
+><DIV
+CLASS="WARNING"
+><P
+></P
+><TABLE
+CLASS="WARNING"
+BORDER="1"
+WIDTH="90%"
+><TR
+><TD
+ALIGN="CENTER"
+><B
+>Warning</B
+></TD
+></TR
+><TR
+><TD
+ALIGN="LEFT"
+><P
+> Don't block any header without understanding the consequences.
+ </P
+></TD
+></TR
+></TABLE
+></DIV
+></DD
+><DT
+>Example usage (section):</DT
+><DD
+><P
+> <TABLE
+BORDER="0"
+BGCOLOR="#E0E0E0"
+WIDTH="90%"
+><TR
+><TD
+><PRE
+CLASS="SCREEN"
+># Block the non-existent "Privacy-Violation:" client header
+{ +crunch-client-header{Privacy-Violation:} }
+/
+ </PRE
+></TD
+></TR
+></TABLE
+>
+ </P
+></DD
+></DL
+></DIV
+></DIV
+><DIV
+CLASS="SECT3"
+><H4
+CLASS="SECT3"
+><A
+NAME="CRUNCH-IF-NONE-MATCH"
+>8.5.8. crunch-if-none-match</A
+></H4
+><P
+></P
+><DIV
+CLASS="VARIABLELIST"
+><DL
+><DT
+>Typical use:</DT
+><DD
+><P
+>Prevent yet another way to track the user's steps between sessions.</P
+></DD
+><DT
+>Effect:</DT
+><DD
+><P
+> Deletes the <SPAN
+CLASS="QUOTE"
+>"If-None-Match:"</SPAN
+> HTTP client header.
+ </P
+></DD
+><DT
+>Type:</DT
+><DD
+><P
+>Boolean.</P
+></DD
+><DT
+>Parameter:</DT
+><DD
+><P
+> N/A
</P
></DD
><DT
</P
><P
> It is also useful to make sure the header isn't used as a cookie
- replacement.
+ replacement (unlikely but possible).
</P
><P
> Blocking the <SPAN
CLASS="QUOTE"
>"If-Modified-Since:"</SPAN
> header
- isn't blocked as well.
+ isn't blocked or missing as well.
</P
><P
> It is recommended to use this action together with
><TD
><PRE
CLASS="SCREEN"
-># Let the browser revalidate cached documents without being tracked across sessions
-{ +hide-if-modified-since{-60} \
+># Let the browser revalidate cached documents but don't
+# allow the server to use the revalidation headers for user tracking.
+{+hide-if-modified-since{-60} \
+overwrite-last-modified{randomize} \
+crunch-if-none-match}
/ </PRE
CLASS="SECT3"
><A
NAME="CRUNCH-INCOMING-COOKIES"
-></A
->8.5.6. crunch-incoming-cookies</H4
+>8.5.9. crunch-incoming-cookies</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
-> Prevent the web server from setting any cookies on your system
+> Prevent the web server from setting HTTP cookies on your system
</P
></DD
><DT
CLASS="EMPHASIS"
>incoming</I
></SPAN
-> cookies. For
+> HTTP cookies. For
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>outgoing</I
></SPAN
-> cookies, use
+> HTTP cookies, use
<TT
CLASS="LITERAL"
><A
CLASS="EMPHASIS"
>both</I
></SPAN
-> to disable cookies completely.
+> to disable HTTP cookies completely.
</P
><P
> It makes <SPAN
CLASS="SECT3"
><A
NAME="CRUNCH-SERVER-HEADER"
-></A
->8.5.7. crunch-server-header</H4
+>8.5.10. crunch-server-header</A
+></H4
><P
></P
><DIV
>crunch-server-header</TT
> is only meant for quick tests.
If you have to block several different headers, or only want to modify
- parts of them, you should enable
+ parts of them, you should use a custom
<TT
CLASS="LITERAL"
><A
-HREF="actions-file.html#FILTER-SERVER-HEADERS"
->filter-server-headers</A
+HREF="actions-file.html#SERVER-HEADER-FILTER"
+>server-header filter</A
></TT
->
- and create your own filter.
+>.
</P
><DIV
CLASS="WARNING"
CLASS="SECT3"
><A
NAME="CRUNCH-OUTGOING-COOKIES"
-></A
->8.5.8. crunch-outgoing-cookies</H4
+>8.5.11. crunch-outgoing-cookies</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
-> Prevent the web server from reading any cookies from your system
+> Prevent the web server from reading any HTTP cookies from your system
</P
></DD
><DT
CLASS="EMPHASIS"
>outgoing</I
></SPAN
-> cookies. For
+> HTTP cookies. For
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>incoming</I
></SPAN
-> cookies, use
+> HTTP cookies, use
<TT
CLASS="LITERAL"
><A
CLASS="EMPHASIS"
>both</I
></SPAN
-> to disable cookies completely.
+> to disable HTTP cookies completely.
</P
><P
> It makes <SPAN
CLASS="SECT3"
><A
NAME="DEANIMATE-GIFS"
-></A
->8.5.9. deanimate-gifs</H4
+>8.5.12. deanimate-gifs</A
+></H4
><P
></P
><DIV
CLASS="SECT3"
><A
NAME="DOWNGRADE-HTTP-VERSION"
-></A
->8.5.10. downgrade-http-version</H4
+>8.5.13. downgrade-http-version</A
+></H4
><P
></P
><DIV
>
didn't support important HTTP/1.1 features well. It is left here for the
unlikely case that you experience HTTP/1.1 related problems with some server
- out there. Not all (optional) HTTP/1.1 features are supported yet, so there
- is a chance you might need this action.
+ out there. Not all HTTP/1.1 features and requirements are supported yet,
+ so there is a chance you might need this action.
</P
></DD
><DT
CLASS="SECT3"
><A
NAME="FAST-REDIRECTS"
-></A
->8.5.11. fast-redirects</H4
+>8.5.14. fast-redirects</A
+></H4
><P
></P
><DIV
or lead to a <SPAN
CLASS="QUOTE"
>"page not found"</SPAN
-> error. It is possible to fix these redirected
- requests with <TT
+> error. You can prevent this problem by
+ first using the <TT
CLASS="LITERAL"
><A
-HREF="actions-file.html#FILTER-CLIENT-HEADERS"
->filter-client-headers</A
+HREF="actions-file.html#REDIRECT"
+>redirect</A
></TT
->
- but it requires a little effort.
+> action
+ to remove the last part of the URL, but it requires a little effort.
</P
><P
> To detect a redirection URL, <TT
><PRE
CLASS="SCREEN"
> { +fast-redirects{simple-check} }
- .example.com
+ one.example.com
{ +fast-redirects{check-decoded-url} }
another.example.com/testing</PRE
CLASS="SECT3"
><A
NAME="FILTER"
-></A
->8.5.12. filter</H4
+>8.5.15. filter</A
+></H4
><P
></P
><DIV
>Effect:</DT
><DD
><P
-> All files of text-based type, most notably HTML and
- JavaScript, to which this action applies, can be filtered on-the-fly
- through the specified regular expression based substitutions. (Note: as of
- version 3.0.3 plain text documents are exempted from filtering, because
- web servers often use the <TT
+> All instances of text-based type, most notably HTML and JavaScript, to which
+ this action applies, can be filtered on-the-fly through the specified regular
+ expression based substitutions. (Note: as of version 3.0.3 plain text documents
+ are exempted from filtering, because web servers often use the
+ <TT
CLASS="LITERAL"
>text/plain</TT
-> MIME type for all
- files whose type they don't know.) By default, filtering works only on the
- raw document content itself (that which can be seen with <TT
-CLASS="LITERAL"
->View
- Source</TT
->),
- not the headers.
+> MIME type for all files whose type they don't know.)
</P
></DD
><DT
>Parameter:</DT
><DD
><P
-> The name of a filter, as defined in the <A
+> The name of a
content filter, as defined in the <A
HREF="filter-file.html"
>filter file</A
>.
><P
> Filtering requires buffering the page content, which may appear to
slow down page rendering since nothing is displayed until all content has
- passed the filters. (It does not really take longer, but seems that way
- since the page is not incrementally displayed.) This effect will be more
- noticeable on slower connections.
+ passed the filters. (The total time until the page is completely rendered
+ doesn't change much, but it may be perceived as slower since the page is
+ not incrementally displayed.)
+ This effect will be more noticeable on slower connections.
</P
><P
> <SPAN
> exceptions.
</P
><P
-> At this time, <SPAN
+> Compressed content can't be filtered either, unless <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
-> cannot uncompress compressed
- documents. If you want filtering to work on all documents, even those that
- would normally be sent compressed, you must use the
- <TT
+>
+ is compiled with zlib support (requires at least <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> 3.0.7),
+ in which case <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> will decompress the content before filtering
+ it.
+ </P
+><P
+> If you use a <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> version without zlib support, but want filtering to work on
+ as much documents as possible, even those that would normally be sent compressed,
+ you must use the <TT
CLASS="LITERAL"
><A
HREF="actions-file.html#PREVENT-COMPRESSION"
>.
</P
><P
-> Filtering can achieve some of the same effects as the
+> Content filtering can achieve some of the same effects as the
<TT
CLASS="LITERAL"
><A
><TD
><PRE
CLASS="SCREEN"
->+filter{js-annoyances} # Get rid of particularly annoying JavaScript abuse</PRE
+>+filter{js-annoyances} # Get rid of particularly annoying JavaScript abuse.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{js-events} # Kill all JS event bindings (Radically destructive! Only for extra nasty sites)</PRE
+>+filter{js-events} # Kill all JS event bindings and timers (Radically destructive! Only for extra nasty sites).</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{html-annoyances} # Get rid of particularly annoying HTML abuse</PRE
+>+filter{html-annoyances} # Get rid of particularly annoying HTML abuse.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{content-cookies} # Kill cookies that come in the HTML or JS content</PRE
+>+filter{content-cookies} # Kill cookies that come in the HTML or JS content.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{refresh-tags} # Kill automatic refresh tags (for dial-on-demand setups)</PRE
+>+filter{refresh-tags} # Kill automatic refresh tags (for dial-on-demand setups).</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{img-reorder} # Reorder attributes in <img> tags to make the banners-by-* filters more effective</PRE
+>+filter{img-reorder} # Reorder attributes in <img> tags to make the banners-by-* filters more effective.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{banners-by-size} # Kill banners by size</PRE
+>+filter{banners-by-size} # Kill banners by size.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{banners-by-link} # Kill banners by their links to known clicktrackers</PRE
+>+filter{banners-by-link} # Kill banners by their links to known clicktrackers.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{webbugs} # Squish WebBugs (1x1 invisible GIFs used for user tracking)</PRE
+>+filter{webbugs} # Squish WebBugs (1x1 invisible GIFs used for user tracking).</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{tiny-textforms} # Extend those tiny textareas up to 40x80 and kill the hard wrap</PRE
+>+filter{tiny-textforms} # Extend those tiny textareas up to 40x80 and kill the hard wrap.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{jumping-windows} # Prevent windows from resizing and moving themselves</PRE
+>+filter{jumping-windows} # Prevent windows from resizing and moving themselves.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{frameset-borders} # Give frames a border and make them resizeable</PRE
+>+filter{frameset-borders} # Give frames a border and make them resizable.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{demoronizer} # Fix MS's non-standard use of standard charsets</PRE
+>+filter{demoronizer} # Fix MS's non-standard use of standard charsets.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{shockwave-flash} # Kill embedded Shockwave Flash objects</PRE
+>+filter{shockwave-flash} # Kill embedded Shockwave Flash objects.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{quicktime-kioskmode} # Make Quicktime movies savable</PRE
+>+filter{quicktime-kioskmode} # Make Quicktime movies saveable.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{crude-parental} # Crude parental filtering (demo only)</PRE
+>+filter{crude-parental} # Crude parental filtering. Note that this filter doesn't work reliably.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{ie-exploits} # Disable some known Internet Explorer bug exploits</PRE
+>+filter{ie-exploits} # Disable some known Internet Explorer bug exploits.</PRE
></TD
></TR
></TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{site-specifics} # Custom filters for specific site related problems</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> <A
-NAME="FILTER-GOOGLE"
-></A
->
- <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->+filter{google} # Removes text ads and other Google specific improvements</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> <A
-NAME="FILTER-YAHOO"
-></A
->
- <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->+filter{yahoo} # Removes text ads and other Yahoo specific improvements</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> <A
-NAME="FILTER-MSN"
-></A
->
- <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->+filter{msn} # Removes text ads and other MSN specific improvements</PRE
+>+filter{site-specifics} # Cure for site-specific problems. Don't apply generally!</PRE
></TD
></TR
></TABLE
</P
><P
> <A
-NAME="FILTER-BLOGSPOT"
+NAME="FILTER-NO-PING"
></A
>
<TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{blogspot} # Cleans up Blogspot blogs</PRE
+>+filter{no-ping} # Removes non-standard ping attributes in <a> and <area> tags.</PRE
></TD
></TR
></TABLE
</P
><P
> <A
-NAME="FILTER-HTML-TO-XML"
+NAME="FILTER-GOOGLE"
></A
>
<TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{html-to-xml} # Header filter to change the Content-Type from html to xml</PRE
+>+filter{google} # CSS-based block for Google text ads. Also removes a width limitation and the toolbar advertisement.</PRE
></TD
></TR
></TABLE
</P
><P
> <A
-NAME="FILTER-XML-TO-HTML"
+NAME="FILTER-YAHOO"
></A
>
<TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{xml-to-html} # Header filter to change the Content-Type from xml to html</PRE
+>+filter{yahoo} # CSS-based block for Yahoo text ads. Also removes a width limitation.</PRE
></TD
></TR
></TABLE
</P
><P
> <A
-NAME="FILTER-NO-PING"
+NAME="FILTER-MSN"
></A
>
<TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{no-ping} # Removes non-standard ping attributes from anchor and area tags</PRE
+>+filter{msn} # CSS-based block for MSN text ads. Also removes tracking URLs and a width limitation.</PRE
></TD
></TR
></TABLE
</P
><P
> <A
-NAME="FILTER-HIDE-TOR-EXIT-NOTATION"
+NAME="FILTER-BLOGSPOT"
></A
>
<TABLE
><TD
><PRE
CLASS="SCREEN"
->+filter{hide-tor-exit-notation} # Header filter to remove the Tor exit node notation in Host and Referer headers</PRE
+>+filter{blogspot} # Cleans up some Blogspot blogs. Read the fine print before using this.</PRE
></TD
></TR
></TABLE
><H4
CLASS="SECT3"
><A
-NAME="FILTER-CLIENT-HEADERS"
-></A
->8.5.13. filter-client-headers</H4
+NAME="FORCE-TEXT-MODE"
+>8.5.16. force-text-mode</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
-> To apply filtering to the client's (browser's) headers
- </P
+>Force <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> to treat a document as if it was in some kind of <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>text</I
+></SPAN
+> format. </P
></DD
><DT
>Effect:</DT
><DD
><P
-> By default, <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> filters only apply
- to the document content itself. This will extend those filters to
- include the client's headers as well.
+> Declares a document as text, even if the <SPAN
+CLASS="QUOTE"
+>"Content-Type:"</SPAN
+> isn't detected as such.
</P
></DD
><DT
>Notes:</DT
><DD
><P
-> Regular expressions can be used to filter headers as well. Check your
- filters closely before activating this action, as it can easily lead to broken
- requests.
- </P
-><P
->
- These filters are applied to each header on its own, not to them
- all at once. This makes it easier to diagnose problems, but on the downside
- you can't write filters that only change header x if header y's value is
- z.
- </P
-><P
-> The filters are used after the other header actions have finished and can
- use their output as input.
- </P
-><P
-> Whenever possible one should specify <TT
+> As explained <TT
CLASS="LITERAL"
->^</TT
+><A
+HREF="actions-file.html#FILTER"
+>above</A
+></TT
>,
- <TT
-CLASS="LITERAL"
->$</TT
->, the whole header name and the colon, to make sure
- the filter doesn't cause havoc to other headers or the
- page itself. For example if you want to transform
- <SPAN
-CLASS="APPLICATION"
->Galeon</SPAN
-> User-Agents to
<SPAN
CLASS="APPLICATION"
->Firefox</SPAN
-> User-Agents you
- shouldn't use:</P
-><P
-><TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->s@Galeon/\d\.\d\.\d @@</PRE
-></TD
-></TR
-></TABLE
-></P
-><P
-> but:</P
-><P
-><TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->s@^(User-Agent:.*) Galeon/\d\.\d\.\d (Firefox/\d\.\d\.\d\.\d)$@$1 $2@</PRE
-></TD
-></TR
-></TABLE
-></P
-></DD
-><DT
->Example usage (section):</DT
-><DD
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->{+filter-client-headers +filter{test_filter}}
-problem-host.example.com
- </PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="FILTER-SERVER-HEADERS"
-></A
->8.5.14. filter-server-headers</H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Typical use:</DT
-><DD
-><P
-> To apply filtering to the server's headers
- </P
-></DD
-><DT
->Effect:</DT
-><DD
-><P
-> By default, <SPAN
-CLASS="APPLICATION"
->Privoxy's</SPAN
-> filters only apply
- to the document content itself. This will extend those filters to
- include the server's headers as well.
- </P
-></DD
-><DT
->Type:</DT
-><DD
-><P
->Boolean.</P
-></DD
-><DT
->Parameter:</DT
-><DD
-><P
-> N/A
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> Similar to <TT
+>Privoxy</SPAN
+> tries to only filter files that are
+ in some kind of text format. The same restrictions apply to
+ <TT
CLASS="LITERAL"
->filter-client-headers</TT
->, but works on
- the server instead. To filter both server and client, use both.
- </P
-><P
-> As with <TT
+><A
+HREF="actions-file.html#CONTENT-TYPE-OVERWRITE"
+>content-type-overwrite</A
+></TT
+>.
+ <TT
CLASS="LITERAL"
->filter-client-headers</TT
->, check your
- filters before activating this action, as it can easily lead to broken
- requests.
- </P
-><P
->
- These filters are applied to each header on its own, not to them
- all at once. This makes it easier to diagnose problems, but on the downside
- you can't write filters that only change header x if header y's value is
- z.
+>force-text-mode</TT
+> declares a document as text,
+ without looking at the <SPAN
+CLASS="QUOTE"
+>"Content-Type:"</SPAN
+> first.
</P
+><DIV
+CLASS="WARNING"
><P
-> The filters are used after the other header actions have finished and can
- use their output as input.
- </P
+></P
+><TABLE
+CLASS="WARNING"
+BORDER="1"
+WIDTH="90%"
+><TR
+><TD
+ALIGN="CENTER"
+><B
+>Warning</B
+></TD
+></TR
+><TR
+><TD
+ALIGN="LEFT"
><P
-> Remember too, whenever possible one should specify <TT
-CLASS="LITERAL"
->^</TT
->,
- <TT
-CLASS="LITERAL"
->$</TT
->, the whole header name and the colon, to make sure
- the filter doesn't cause havoc to other headers or the
- page itself. See above for example.
- </P
+> Think twice before activating this action. Filtering binary data
+ with regular expressions can cause file damage.
+ </P
+></TD
+></TR
+></TABLE
+></DIV
></DD
><DT
->Example usage (section):</DT
+>Example usage:</DT
><DD
><P
> <TABLE
><TD
><PRE
CLASS="SCREEN"
->{+filter-server-headers +filter{test_filter}}
-problem-host.example.com
- </PRE
+>+force-text-mode
+ </PRE
></TD
></TR
></TABLE
>
- </P
+ </P
></DD
></DL
></DIV
><H4
CLASS="SECT3"
><A
-NAME="FORCE-TEXT-MODE"
-></A
->8.5.15. force-text-mode</H4
+NAME="FORWARD-OVERRIDE"
+>8.5.17. forward-override</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
->Force <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> to treat a document as if it was in some kind of <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->text</I
-></SPAN
-> format. </P
+>Change the forwarding settings based on User-Agent or request origin</P
></DD
><DT
>Effect:</DT
><DD
><P
-> Declares a document as text, even if the <SPAN
-CLASS="QUOTE"
->"Content-Type:"</SPAN
-> isn't detected as such.
+> Overrules the forward directives in the configuration file.
</P
></DD
><DT
>Type:</DT
><DD
><P
->Boolean.</P
+>Multi-value.</P
></DD
><DT
>Parameter:</DT
><DD
><P
-> N/A
- </P
+></P
+><UL
+><LI
+><P
+><SPAN
+CLASS="QUOTE"
+>"forward ."</SPAN
+> to use a direct connection without any additional proxies.</P
+></LI
+><LI
+><P
+> <SPAN
+CLASS="QUOTE"
+>"forward 127.0.0.1:8123"</SPAN
+> to use the HTTP proxy listening at 127.0.0.1 port 8123.
+ </P
+></LI
+><LI
+><P
+> <SPAN
+CLASS="QUOTE"
+>"forward-socks4a 127.0.0.1:9050 ."</SPAN
+> to use the socks4a proxy listening at
+ 127.0.0.1 port 9050. Replace <SPAN
+CLASS="QUOTE"
+>"forward-socks4a"</SPAN
+> with <SPAN
+CLASS="QUOTE"
+>"forward-socks4"</SPAN
+>
+ to use a socks4 connection (with local DNS resolution) instead, use <SPAN
+CLASS="QUOTE"
+>"forward-socks5"</SPAN
+>
+ for socks5 connections (with remote DNS resolution).
+ </P
+></LI
+><LI
+><P
+> <SPAN
+CLASS="QUOTE"
+>"forward-socks4a 127.0.0.1:9050 proxy.example.org:8000"</SPAN
+> to use the socks4a proxy
+ listening at 127.0.0.1 port 9050 to reach the HTTP proxy listening at proxy.example.org port 8000.
+ Replace <SPAN
+CLASS="QUOTE"
+>"forward-socks4a"</SPAN
+> with <SPAN
+CLASS="QUOTE"
+>"forward-socks4"</SPAN
+> to use a socks4 connection
+ (with local DNS resolution) instead, use <SPAN
+CLASS="QUOTE"
+>"forward-socks5"</SPAN
+>
+ for socks5 connections (with remote DNS resolution).
+ </P
+></LI
+></UL
></DD
><DT
>Notes:</DT
><DD
><P
-> As explained <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER"
->above</A
-></TT
->,
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> tries to only filter files that are
- in some kind of text format. The same restrictions apply to
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#CONTENT-TYPE-OVERWRITE"
->content-type-overwrite</A
-></TT
->.
- <TT
-CLASS="LITERAL"
->force-text-mode</TT
-> declares a document as text,
- without looking at the <SPAN
-CLASS="QUOTE"
->"Content-Type:"</SPAN
-> first.
+> This action takes parameters similar to the
+ <A
+HREF="config.html#FORWARDING"
+>forward</A
+> directives in the configuration
+ file, but without the URL pattern. It can be used as replacement, but normally it's only
+ used in cases where matching based on the request URL isn't sufficient.
</P
><DIV
CLASS="WARNING"
><TD
ALIGN="LEFT"
><P
-> Think twice before activating this action. Filtering binary data
- with regular expressions can cause file damage.
+> Please read the description for the <A
+HREF="config.html#FORWARDING"
+>forward</A
+> directives before
+ using this action. Forwarding to the wrong people will reduce your privacy and increase the
+ chances of man-in-the-middle attacks.
+ </P
+><P
+> If the ports are missing or invalid, default values will be used. This might change
+ in the future and you shouldn't rely on it. Otherwise incorrect syntax causes Privoxy
+ to exit.
+ </P
+><P
+> Use the <A
+HREF="http://config.privoxy.org/show-url-info"
+TARGET="_top"
+>show-url-info CGI page</A
+>
+ to verify that your forward settings do what you thought the do.
</P
></TD
></TR
><TD
><PRE
CLASS="SCREEN"
->+force-text-mode
+># Always use direct connections for requests previously tagged as
+# <SPAN
+CLASS="QUOTE"
+>"User-Agent: fetch libfetch/2.0"</SPAN
+> and make sure
+# resuming downloads continues to work.
+# This way you can continue to use Tor for your normal browsing,
+# without overloading the Tor network with your FreeBSD ports updates
+# or downloads of bigger files like ISOs.
+# Note that HTTP headers are easy to fake and therefore their
+# values are as (un)trustworthy as your clients and users.
+{+forward-override{forward .} \
+ -hide-if-modified-since \
+ -overwrite-last-modified \
+}
+TAG:^User-Agent: fetch libfetch/2\.0$
</PRE
></TD
></TR
CLASS="SECT3"
><A
NAME="HANDLE-AS-EMPTY-DOCUMENT"
-></A
->8.5.16. handle-as-empty-document</H4
+>8.5.18. handle-as-empty-document</A
+></H4
><P
></P
><DIV
CLASS="SCREEN"
># Block all documents on example.org that end with ".js",
# but send an empty document instead of the usual HTML message.
-{+block +handle-as-empty-document}
+{+block{Blocked JavaScript} +handle-as-empty-document}
example.org/.*\.js$
</PRE
></TD
CLASS="SECT3"
><A
NAME="HANDLE-AS-IMAGE"
-></A
->8.5.17. handle-as-image</H4
+>8.5.19. handle-as-image</A
+></H4
><P
></P
><DIV
# These don't look like images, but they're banners and should be
# blocked as images:
#
-{+block +handle-as-image}
-some.nasty-banner-server.com/junk.cgi?output=trash
-
-# Banner source! Who cares if they also have non-image content?
-ad.doubleclick.net </PRE
+{+block{Nasty banners.} +handle-as-image}
+nasty-banner-server.example.com/junk.cgi\?output=trash</PRE
></TD
></TR
></TABLE
CLASS="SECT3"
><A
NAME="HIDE-ACCEPT-LANGUAGE"
-></A
->8.5.18. hide-accept-language</H4
+>8.5.20. hide-accept-language</A
+></H4
><P
></P
><DIV
CLASS="SECT3"
><A
NAME="HIDE-CONTENT-DISPOSITION"
-></A
->8.5.19. hide-content-disposition</H4
+>8.5.21. hide-content-disposition</A
+></H4
><P
></P
><DIV
to another one, but in most cases it isn't worth the time to set
it up.
</P
+><P
+> This action will probably be removed in the future,
+ use server-header filters instead.
+ </P
></DD
><DT
>Example usage:</DT
{ -filter \
+content-type-overwrite{text/plain}\
+hide-content-disposition{block} }
- .sourceforge.net/tracker/download.php</PRE
+ .sourceforge.net/tracker/download\.php</PRE
></TD
></TR
></TABLE
CLASS="SECT3"
><A
NAME="HIDE-IF-MODIFIED-SINCE"
-></A
->8.5.20. hide-if-modified-since</H4
+>8.5.22. hide-if-modified-since</A
+></H4
><P
></P
><DIV
> Keyword: <SPAN
CLASS="QUOTE"
>"block"</SPAN
->, or a user defined value that specifies a range of hours.
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> Removing this header is useful for filter testing, where you want to force a real
- reload instead of getting status code <SPAN
-CLASS="QUOTE"
->"304"</SPAN
->, which would cause the
- browser to use a cached copy of the page.
- </P
-><P
-> Instead of removing the header, <TT
-CLASS="LITERAL"
->hide-if-modified-since</TT
-> can
- also add or subtract a random amount of time to/from the header's value.
- You specify a range of minutes where the random factor should be chosen from and
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> does the rest. A negative value means
- subtracting, a positive value adding.
- </P
-><P
-> Randomizing the value of the <SPAN
-CLASS="QUOTE"
->"If-Modified-Since:"</SPAN
-> makes
- sure it isn't used as a cookie replacement, but you will run into
- caching problems if the random range is too high.
- </P
-><P
-> It is a good idea to only use a small negative value and let
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#OVERWRITE-LAST-MODIFIED"
->overwrite-last-modified</A
-></TT
->
- handle the greater changes.
- </P
-><P
-> It is also recommended to use this action together with
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#CRUNCH-IF-NONE-MATCH"
->crunch-if-none-match</A
-></TT
->.
- </P
-></DD
-><DT
->Example usage (section):</DT
-><DD
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-># Let the browser revalidate without being tracked across sessions
-{ +hide-if-modified-since{-60} \
- +overwrite-last-modified{randomize} \
- +crunch-if-none-match}
-/</PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="HIDE-FORWARDED-FOR-HEADERS"
-></A
->8.5.21. hide-forwarded-for-headers</H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Typical use:</DT
-><DD
-><P
->Improve privacy by hiding the true source of the request</P
-></DD
-><DT
->Effect:</DT
-><DD
-><P
-> Deletes any existing <SPAN
-CLASS="QUOTE"
->"X-Forwarded-for:"</SPAN
-> HTTP header from client requests,
- and prevents adding a new one.
- </P
-></DD
-><DT
->Type:</DT
-><DD
-><P
->Boolean.</P
-></DD
-><DT
->Parameter:</DT
-><DD
-><P
-> N/A
+>, or a user defined value that specifies a range of hours.
</P
></DD
><DT
>Notes:</DT
><DD
><P
-> It is fairly safe to leave this on.
+> Removing this header is useful for filter testing, where you want to force a real
+ reload instead of getting status code <SPAN
+CLASS="QUOTE"
+>"304"</SPAN
+>, which would cause the
+ browser to use a cached copy of the page.
</P
><P
-> This action is scheduled for improvement: It should be able to generate forged
+> Instead of removing the header, <TT
+CLASS="LITERAL"
+>hide-if-modified-since</TT
+> can
+ also add or subtract a random amount of time to/from the header's value.
+ You specify a range of minutes where the random factor should be chosen from and
<SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> does the rest. A negative value means
+ subtracting, a positive value adding.
+ </P
+><P
+> Randomizing the value of the <SPAN
CLASS="QUOTE"
->"X-Forwarded-for:"</SPAN
-> headers using random IP addresses from a specified network,
- to make successive requests from the same client look like requests from a pool of different
- users sharing the same proxy.
+>"If-Modified-Since:"</SPAN
+> makes
+ it less likely that the server can use the time as a cookie replacement,
+ but you will run into caching problems if the random range is too high.
+ </P
+><P
+> It is a good idea to only use a small negative value and let
+ <TT
+CLASS="LITERAL"
+><A
+HREF="actions-file.html#OVERWRITE-LAST-MODIFIED"
+>overwrite-last-modified</A
+></TT
+>
+ handle the greater changes.
+ </P
+><P
+> It is also recommended to use this action together with
+ <TT
+CLASS="LITERAL"
+><A
+HREF="actions-file.html#CRUNCH-IF-NONE-MATCH"
+>crunch-if-none-match</A
+></TT
+>,
+ otherwise it's more or less pointless.
</P
></DD
><DT
->Example usage:</DT
+>Example usage (section):</DT
><DD
><P
> <TABLE
><TD
><PRE
CLASS="SCREEN"
->+hide-forwarded-for-headers</PRE
+># Let the browser revalidate but make tracking based on the time less likely.
+{+hide-if-modified-since{-60} \
+ +overwrite-last-modified{randomize} \
+ +crunch-if-none-match}
+/</PRE
></TD
></TR
></TABLE
CLASS="SECT3"
><A
NAME="HIDE-FROM-HEADER"
-></A
->8.5.22. hide-from-header</H4
+>8.5.23. hide-from-header</A
+></H4
><P
></P
><DIV
CLASS="SECT3"
><A
NAME="HIDE-REFERRER"
-></A
->8.5.23. hide-referrer</H4
+>8.5.24. hide-referrer</A
+></H4
><A
NAME="HIDE-REFERER"
></A
><P
><SPAN
CLASS="QUOTE"
+>"conditional-forge"</SPAN
+> to forge the header if the host has changed.</P
+></LI
+><LI
+><P
+><SPAN
+CLASS="QUOTE"
>"block"</SPAN
> to delete the header unconditionally.</P
></LI
><P
> Always blocking the referrer, or using a custom one, can lead to
failures on servers that check the referrer before they answer any
- requests, in an attempt to prevent their valuable content from being
+ requests, in an attempt to prevent their content from being
embedded or linked to elsewhere.
</P
><P
CLASS="SECT3"
><A
NAME="HIDE-USER-AGENT"
-></A
->8.5.24. hide-user-agent</H4
+>8.5.25. hide-user-agent</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
->Conceal your type of browser and client operating system</P
+>Try to conceal your type of browser and client operating system</P
></DD
><DT
>Effect:</DT
></SPAN
> the right thing to do: good web sites
work browser-independently).
-
</P
></TD
></TR
setups, you might use it to delete your OS version information from
the headers, because it is an invitation to exploit known bugs for your
OS. It is also occasionally useful to forge this in order to access
- sites that won't let you in otherwise (though there may be a good
- reason in some cases). Example of this: some MSN sites will not
- let <SPAN
-CLASS="APPLICATION"
->Mozilla</SPAN
-> enter, yet forging to a
- <SPAN
-CLASS="APPLICATION"
->Netscape 6.1</SPAN
-> user-agent works just fine.
- (Must be just a silly MS goof, I'm sure :-).
- </P
-><P
-> This action is scheduled for improvement.
- </P
-></DD
-><DT
->Example usage:</DT
-><DD
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->+hide-user-agent{Netscape 6.1 (X11; I; Linux 2.4.18 i686)}</PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="INSPECT-JPEGS"
-></A
->8.5.25. inspect-jpegs</H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Typical use:</DT
-><DD
-><P
->To protect against the MS buffer over-run in JPEG processing</P
-></DD
-><DT
->Effect:</DT
-><DD
-><P
-> Protect against a known exploit
- </P
-></DD
-><DT
->Type:</DT
-><DD
-><P
->Boolean.</P
-></DD
-><DT
->Parameter:</DT
-><DD
-><P
-> N/A
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> See Microsoft Security Bulletin MS04-028. JPEG images are one of the most
- common image types found across the Internet. The exploit as described can
- allow execution of code on the target system, giving an attacker access
- to the system in question by merely planting an altered JPEG image, which
- would have no obvious indications of what lurks inside. This action
- prevents unwanted intrusion.
- </P
-></DD
-><DT
->Example usage:</DT
-><DD
-><P
-><TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->+inspect-jpegs</PRE
-></TD
-></TR
-></TABLE
-></P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="KILL-POPUPS"
-></A
->8.5.26. kill-popups<A
-NAME="KILL-POPUP"
-></A
-></H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Typical use:</DT
-><DD
-><P
->Eliminate those annoying pop-up windows (deprecated)</P
-></DD
-><DT
->Effect:</DT
-><DD
-><P
-> While loading the document, replace JavaScript code that opens
- pop-up windows with (syntactically neutral) dummy code on the fly.
- </P
-></DD
-><DT
->Type:</DT
-><DD
-><P
->Boolean.</P
-></DD
-><DT
->Parameter:</DT
-><DD
-><P
-> N/A
- </P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> This action is basically a built-in, hardwired special-purpose filter
- action, but there are important differences: For <TT
-CLASS="LITERAL"
->kill-popups</TT
->,
- the document need not be buffered, so it can be incrementally rendered while
- downloading. But <TT
-CLASS="LITERAL"
->kill-popups</TT
-> doesn't catch as many pop-ups as
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER-ALL-POPUPS"
->filter{<TT
-CLASS="REPLACEABLE"
-><I
->all-popups</I
-></TT
->}</A
-></TT
->
- does and is not as smart as <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER-UNSOLICITED-POPUPS"
->filter{<TT
-CLASS="REPLACEABLE"
-><I
->unsolicited-popups</I
-></TT
->}</A
->
- </TT
->is.
- </P
-><P
-> Think of it as a fast and efficient replacement for a filter that you
- can use if you don't want any filtering at all. Note that it doesn't make
- sense to combine it with any <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER"
->filter</A
-></TT
-> action,
- since as soon as one <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER"
->filter</A
-></TT
-> applies,
- the whole document needs to be buffered anyway, which destroys the advantage of
- the <TT
-CLASS="LITERAL"
->kill-popups</TT
-> action over its filter equivalent.
- </P
-><P
-> Killing all pop-ups unconditionally is problematic. Many shops and banks rely on
- pop-ups to display forms, shopping carts etc, and the <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER-UNSOLICITED-POPUPS"
->filter{<TT
-CLASS="REPLACEABLE"
-><I
->unsolicited-popups</I
-></TT
->}</A
->
- </TT
-> does a better job of catching only the unwanted ones.
- </P
-><P
-> If the only kind of pop-ups that you want to kill are exit consoles (those
- <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->really nasty</I
-></SPAN
-> windows that appear when you close an other
- one), you might want to use
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER"
->filter</A
->{<TT
-CLASS="REPLACEABLE"
-><I
->js-annoyances</I
-></TT
->}</TT
->
- instead.
+ sites that won't let you in otherwise (though there may be a good
+ reason in some cases). Example of this: some MSN sites will not
+ let <SPAN
+CLASS="APPLICATION"
+>Mozilla</SPAN
+> enter, yet forging to a
+ <SPAN
+CLASS="APPLICATION"
+>Netscape 6.1</SPAN
+> user-agent works just fine.
+ (Must be just a silly MS goof, I'm sure :-).
</P
><P
-> This action is most appropriate for browsers that don't have any controls
- for unwanted pop-ups. Not recommended for general usage.
+> More information on known user-agent strings can be found at
+ <A
+HREF="http://www.user-agents.org/"
+TARGET="_top"
+>http://www.user-agents.org/</A
+>
+ and
+ <A
+HREF="http://en.wikipedia.org/wiki/User_agent"
+TARGET="_top"
+>http://en.wikipedia.org/wiki/User_agent</A
+>.
</P
></DD
><DT
>Example usage:</DT
><DD
><P
-><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TD
><PRE
CLASS="SCREEN"
->+kill-popups</PRE
+>+hide-user-agent{Netscape 6.1 (X11; I; Linux 2.4.18 i686)}</PRE
></TD
></TR
></TABLE
-></P
+>
+ </P
></DD
></DL
></DIV
CLASS="SECT3"
><A
NAME="LIMIT-CONNECT"
-></A
->8.5.27. limit-connect</H4
+>8.5.26. limit-connect</A
+></H4
><P
></P
><DIV
<SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
-> only allows HTTP CONNECT
- requests to port 443 (the standard, secure HTTPS port). Use
- <TT
+> allows HTTP CONNECT requests to all
+ ports. Use <TT
CLASS="LITERAL"
>limit-connect</TT
-> if more fine-grained control is desired
- for some or all destinations.
+> if fine-grained control
+ is desired for some or all destinations.
</P
><P
> The CONNECT methods exists in HTTP to allow access to secure websites
> URLs) through proxies. It works very simply:
the proxy connects to the server on the specified port, and then
short-circuits its connections to the client and to the remote server.
- This can be a big security hole, since CONNECT-enabled proxies can be
- abused as TCP relays very easily.
+ This means CONNECT-enabled proxies can be used as TCP relays very easily.
</P
><P
> <SPAN
>Privoxy</SPAN
>'s
filters. By specifying an invalid port range you can disable HTTPS entirely.
- If you plan to disable SSL by default, consider enabling
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#TREAT-FORBIDDEN-CONNECTS-LIKE-BLOCKS"
->treat-forbidden-connects-like-blocks</A
-></TT
->
- as well, to be able to quickly create exceptions.
</P
></DD
><DT
><TD
><PRE
CLASS="SCREEN"
->+limit-connect{443} # This is the default and need not be specified.
+>+limit-connect{443} # Port 443 is OK.
+limit-connect{80,443} # Ports 80 and 443 are OK.
+limit-connect{-3, 7, 20-100, 500-} # Ports less than 3, 7, 20 to 100 and above 500 are OK.
+limit-connect{-} # All ports are OK
CLASS="SECT3"
><A
NAME="PREVENT-COMPRESSION"
-></A
->8.5.28. prevent-compression</H4
+>8.5.27. prevent-compression</A
+></H4
><P
></P
><DIV
><DD
><P
> More and more websites send their content compressed by default, which
- is generally a good idea and saves bandwidth. But for the <TT
+ is generally a good idea and saves bandwidth. But the <TT
CLASS="LITERAL"
><A
HREF="actions-file.html#FILTER"
>filter</A
></TT
->, <TT
+> and
+ <TT
CLASS="LITERAL"
><A
HREF="actions-file.html#DEANIMATE-GIFS"
>deanimate-gifs</A
></TT
>
- and <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#KILL-POPUPS"
->kill-popups</A
-></TT
-> actions to work,
- <SPAN
+ actions need access to the uncompressed data.
+ </P
+><P
+> When compiled with zlib support (available since <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
-> needs access to the uncompressed data.
- Unfortunately, <SPAN
+> 3.0.7), content that should be
+ filtered is decompressed on-the-fly and you don't have to worry about this action.
+ If you are using an older <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
-> can't yet(!) uncompress, filter, and
- re-compress the content on the fly. So if you want to ensure that all websites, including
- those that normally compress, can be filtered, you need to use this action.
+> version, or one that hasn't been compiled with zlib
+ support, this action can be used to convince the server to send the content uncompressed.
</P
><P
-> This will slow down transfers from those websites, though. If you use any of the above-mentioned
- actions, you will typically want to use <TT
-CLASS="LITERAL"
->prevent-compression</TT
-> in conjunction
- with them.
+> Most text-based instances compress very well, the size is seldom decreased by less than 50%,
+ for markup-heavy instances like news feeds saving more than 90% of the original size isn't
+ unusual.
+ </P
+><P
+> Not using compression will therefore slow down the transfer, and you should only
+ enable this action if you really need it. As of <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> 3.0.7 it's disabled in all
+ predefined action settings.
</P
><P
> Note that some (rare) ill-configured sites don't handle requests for uncompressed
- documents correctly (they send an empty document body). If you use <TT
+ documents correctly. Broken PHP applications tend to send an empty document body,
+ some IIS versions only send the beginning of the content. If you enable
+ <TT
CLASS="LITERAL"
>prevent-compression</TT
->
- per default, you'll have to add exceptions for those sites. See the example for how to do that.
+> per default, you might want to add
+ exceptions for those sites. See the example for how to do that.
</P
></DD
><DT
{ +prevent-compression }
/ # Match all sites
-# Then maybe make exceptions for ill-behaved sites:
+# Then maybe make exceptions for broken sites:
#
{ -prevent-compression }
- .debianhelp.org
- www.pclinuxonline.com</PRE
+.compusa.com/</PRE
></TD
></TR
></TABLE
CLASS="SECT3"
><A
NAME="OVERWRITE-LAST-MODIFIED"
-></A
->8.5.29. overwrite-last-modified</H4
+>8.5.28. overwrite-last-modified</A
+></H4
><P
></P
><DIV
CLASS="LITERAL"
><A
HREF="actions-file.html#HIDE-IF-MODIFIED-SINCE"
->hided-if-modified-since</A
+>hide-if-modified-since</A
></TT
>
to further customize your random range.
CLASS="SECT3"
><A
NAME="REDIRECT"
-></A
->8.5.30. redirect</H4
+>8.5.29. redirect</A
+></H4
><P
></P
><DIV
>Parameter:</DT
><DD
><P
-> Any URL.
+> An absolute URL or a single pcrs command.
</P
></DD
><DT
>Notes:</DT
><DD
><P
-> This action is useful to replace whole documents with ones of your
- choosing. This can be used to enforce safe surfing, or just as a simple
- convenience.
+> Requests to which this action applies are answered with a
+ HTTP redirect to URLs of your choosing. The new URL is
+ either provided as parameter, or derived by applying a
+ single pcrs command to the original URL.
</P
><P
-> You can do the same by combining the actions
+> This action will be ignored if you use it together with
<TT
CLASS="LITERAL"
><A
HREF="actions-file.html#BLOCK"
>block</A
></TT
->,
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#HANDLE-AS-IMAGE"
->handle-as-image</A
-></TT
-> and
+>.
+ It can be combined with
<TT
CLASS="LITERAL"
><A
-HREF="actions-file.html#SET-IMAGE-BLOCKER"
->set-image-blocker{URL}</A
+HREF="actions-file.html#FAST-REDIRECTS"
+>fast-redirects{check-decoded-url}</A
></TT
->.
- It doesn't sound right for non-image documents, and that's why this action
- was created.
+>
+ to redirect to a decoded version of a rewritten URL.
</P
><P
-> This action will be ignored if you use it together with
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#BLOCK"
->block</A
-></TT
+> Use this action carefully, make sure not to create redirection loops
+ and be aware that using your own redirects might make it
+ possible to fingerprint your requests.
+ </P
+><P
+> In case of problems with your redirects, or simply to watch
+ them working, enable <A
+HREF="config.html#DEBUG"
+>debug 128</A
>.
</P
></DD
CLASS="SCREEN"
># Replace example.com's style sheet with another one
{ +redirect{http://localhost/css-replacements/example.com.css} }
- example.com/stylesheet.css
+ example.com/stylesheet\.css
# Create a short, easy to remember nickname for a favorite site
+# (relies on the browser accept and forward invalid URLs to <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+>)
{ +redirect{http://www.privoxy.org/user-manual/actions-file.html} }
- a</PRE
+ a
+
+# Always use the expanded view for Undeadly.org articles
+# (Note the $ at the end of the URL pattern to make sure
+# the request for the rewritten URL isn't redirected as well)
+{+redirect{s@$@&mode=expanded@}}
+undeadly.org/cgi\?action=article&sid=\d*$
+
+# Redirect Google search requests to MSN
+{+redirect{s@^http://[^/]*/search\?q=([^&]*).*@http://search.msn.com/results.aspx?q=$1@}}
+.google.com/search
+
+# Redirect MSN search requests to Yahoo
+{+redirect{s@^http://[^/]*/results\.aspx\?q=([^&]*).*@http://search.yahoo.com/search?p=$1@}}
+search.msn.com//results\.aspx\?q=
+
+# Redirect remote requests for this manual
+# to the local version delivered by Privoxy
+{+redirect{s@^http://www@http://config@}}
+www.privoxy.org/user-manual/</PRE
></TD
></TR
></TABLE
><H4
CLASS="SECT3"
><A
-NAME="SEND-VANILLA-WAFER"
-></A
->8.5.31. send-vanilla-wafer</H4
+NAME="SERVER-HEADER-FILTER"
+>8.5.30. server-header-filter</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
-> Feed log analysis scripts with useless data.
+> Rewrite or remove single server headers.
</P
></DD
><DT
>Effect:</DT
><DD
><P
-> Sends a cookie with each request stating that you do not accept any copyright
- on cookies sent to you, and asking the site operator not to track you.
+> All server headers to which this action applies are filtered on-the-fly
+ through the specified regular expression based substitutions.
</P
></DD
><DT
>Type:</DT
><DD
><P
->Boolean.</P
+>Parameterized.</P
></DD
><DT
>Parameter:</DT
><DD
><P
-> N/A
+> The name of a server-header filter, as defined in one of the
+ <A
+HREF="filter-file.html"
+>filter files</A
+>.
</P
></DD
><DT
>Notes:</DT
><DD
><P
-> The vanilla wafer is a (relatively) unique header and could conceivably be used to track you.
+> Server-header filters are applied to each header on its own, not to
+ all at once. This makes it easier to diagnose problems, but on the downside
+ you can't write filters that only change header x if header y's value is z.
+ You can do that by using tags though.
+ </P
+><P
+> Server-header filters are executed after the other header actions have finished
+ and use their output as input.
</P
><P
-> This action is rarely used and not enabled in the default configuration.
+> Please refer to the <A
+HREF="filter-file.html"
+>filter file chapter</A
+>
+ to learn which server-header filters are available by default, and how to
+ create your own.
</P
></DD
><DT
->Example usage:</DT
+>Example usage (section):</DT
><DD
><P
> <TABLE
><TD
><PRE
CLASS="SCREEN"
->+send-vanilla-wafer</PRE
+>{+server-header-filter{html-to-xml}}
+example.org/xml-instance-that-is-delivered-as-html
+
+{+server-header-filter{xml-to-html}}
+example.org/instance-that-is-delivered-as-xml-but-is-not
+ </PRE
></TD
></TR
></TABLE
>
- </P
+ </P
></DD
></DL
></DIV
><H4
CLASS="SECT3"
><A
-NAME="SEND-WAFER"
-></A
->8.5.32. send-wafer</H4
+NAME="SERVER-HEADER-TAGGER"
+>8.5.31. server-header-tagger</A
+></H4
><P
></P
><DIV
>Typical use:</DT
><DD
><P
-> Send custom cookies or feed log analysis scripts with even more useless data.
+> Enable or disable filters based on the Content-Type header.
</P
></DD
><DT
>Effect:</DT
><DD
><P
-> Sends a custom, user-defined cookie with each request.
+> Server headers to which this action applies are filtered on-the-fly through
+ the specified regular expression based substitutions, the result is used as
+ tag.
</P
></DD
><DT
>Type:</DT
><DD
><P
->Multi-value.</P
+>Parameterized.</P
></DD
><DT
>Parameter:</DT
><DD
><P
-> A string of the form <SPAN
-CLASS="QUOTE"
->"<TT
-CLASS="REPLACEABLE"
-><I
->name</I
-></TT
->=<TT
-CLASS="REPLACEABLE"
-><I
->value</I
-></TT
->"</SPAN
+> The name of a server-header tagger, as defined in one of the
+ <A
+HREF="filter-file.html"
+>filter files</A
>.
</P
></DD
>Notes:</DT
><DD
><P
-> Being multi-valued, multiple instances of this action can apply to the same request,
- resulting in multiple cookies being sent.
+> Server-header taggers are applied to each header on its own,
+ and as the header isn't modified, each tagger <SPAN
+CLASS="QUOTE"
+>"sees"</SPAN
+>
+ the original.
+ </P
+><P
+> Server-header taggers are executed before all other header actions
+ that modify server headers. Their tags can be used to control
+ all of the other server-header actions, the content filters
+ and the crunch actions (<A
+HREF="actions-file.html#REDIRECT"
+>redirect</A
+>
+ and <A
+HREF="actions-file.html#BLOCK"
+>block</A
+>).
</P
><P
-> This action is rarely used and not enabled in the default configuration.
+> Obviously crunching based on tags created by server-header taggers
+ doesn't prevent the request from showing up in the server's log file.
</P
></DD
><DT
>Example usage (section):</DT
><DD
><P
-> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="90%"
><TD
><PRE
CLASS="SCREEN"
->{+send-wafer{UsingPrivoxy=true}}
-my-internal-testing-server.void</PRE
+># Tag every request with the content type declared by the server
+{+server-header-tagger{content-type}}
+/
+ </PRE
></TD
></TR
></TABLE
>
- </P
+ </P
></DD
></DL
></DIV
CLASS="SECT3"
><A
NAME="SESSION-COOKIES-ONLY"
-></A
->8.5.33. session-cookies-only</H4
+>8.5.32. session-cookies-only</A
+></H4
><P
></P
><DIV
CLASS="SECT3"
><A
NAME="SET-IMAGE-BLOCKER"
-></A
->8.5.34. set-image-blocker</H4
+>8.5.33. set-image-blocker</A
+></H4
><P
></P
><DIV
>
</P
><P
-> Redirect to the BSD devil:
+> Redirect to the BSD daemon:
</P
><P
> <TABLE
></DIV
><DIV
CLASS="SECT3"
-><H4
-CLASS="SECT3"
-><A
-NAME="TREAT-FORBIDDEN-CONNECTS-LIKE-BLOCKS"
-></A
->8.5.35. treat-forbidden-connects-like-blocks</H4
-><P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->Typical use:</DT
-><DD
-><P
->Block forbidden connects with an easy to find error message.</P
-></DD
-><DT
->Effect:</DT
-><DD
-><P
-> If this action is enabled, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> no longer
- makes a difference between forbidden connects and ordinary blocks.
- </P
-></DD
-><DT
->Type:</DT
-><DD
-><P
->Boolean</P
-></DD
-><DT
->Parameter:</DT
-><DD
-><P
->N/A</P
-></DD
-><DT
->Notes:</DT
-><DD
-><P
-> By default <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> answers
- <A
-HREF="actions-file.html#LIMIT-CONNECT"
->forbidden <SPAN
-CLASS="QUOTE"
->"Connect"</SPAN
-> requests</A
->
- with a short error message inside the headers. If the browser doesn't display
- headers (most don't), you just see an empty page.
- </P
-><P
-> With this action enabled, <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> displays
- the message that is used for ordinary blocks instead. If you decide
- to make an exception for the page in question, you can do so by
- following the <SPAN
-CLASS="QUOTE"
->"See why"</SPAN
-> link.
- </P
-><P
-> For <SPAN
-CLASS="QUOTE"
->"Connect"</SPAN
-> requests the clients tell
- <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> which host they are interested
- in, but not which document they plan to get later. As a result, the
- <SPAN
-CLASS="QUOTE"
->"Go there anyway"</SPAN
-> link becomes rather useless:
- it lets the client request the home page of the forbidden host
- through unencrypted HTTP, still using the port of the last request.
- </P
-><P
-> If you previously configured <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
-> to do the
- request through a SSL tunnel, everything will work. Most likely you haven't
- and the server will respond with an error message because it is expecting
- HTTPS (SSL).
- </P
-></DD
-><DT
->Example usage:</DT
-><DD
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->+treat-forbidden-connects-like-blocks</PRE
-></TD
-></TR
-></TABLE
->
- </P
-></DD
-></DL
-></DIV
-></DIV
-><DIV
-CLASS="SECT3"
><H3
CLASS="SECT3"
><A
-NAME="AEN3952"
-></A
->8.5.36. Summary</H3
+NAME="AEN4460"
+>8.5.34. Summary</A
+></H3
><P
> Note that many of these actions have the potential to cause a page to
misbehave, possibly even not to display at all. There are many ways
CLASS="SECT2"
><A
NAME="ALIASES"
-></A
->8.6. Aliases</H2
+>8.6. Aliases</A
+></H2
><P
> Custom <SPAN
CLASS="QUOTE"
HREF="actions-file.html#CRUNCH-OUTGOING-COOKIES"
>crunch-outgoing-cookies</A
>
- +block-as-image = +block +handle-as-image
+ +block-as-image = +block{Blocked image.} +handle-as-image
allow-all-cookies = -crunch-all-cookies -<A
HREF="actions-file.html#SESSION-COOKIES-ONLY"
>session-cookies-only</A
HREF="actions-file.html#HIDE-REFERER"
>hide-referrer</A
> -<A
-HREF="actions-file.html#KILL-POPUPS"
->kill-popups</A
-> -<A
HREF="actions-file.html#PREVENT-COMPRESSION"
>prevent-compression</A
>
shop = -crunch-all-cookies -<A
HREF="actions-file.html#FILTER-ALL-POPUPS"
>filter{all-popups}</A
-> -<A
-HREF="actions-file.html#KILL-POPUPS"
->kill-popups</A
>
# Short names for other aliases, for really lazy people ;-)
# These shops require pop-ups:
#
- {-kill-popups -filter{all-popups} -filter{unsolicited-popups}}
+ {-filter{all-popups} -filter{unsolicited-popups}}
.dabs.com
.overclockers.co.uk</PRE
></TD
CLASS="SECT2"
><A
NAME="ACT-EXAMPLES"
-></A
->8.7. Actions Files Tutorial</H2
+>8.7. Actions Files Tutorial</A
+></H2
><P
> The above chapters have shown <A
HREF="actions-file.html"
>. Now, let's look at an
example <TT
CLASS="FILENAME"
+>match-all.action</TT
+>, <TT
+CLASS="FILENAME"
+>default.action</TT
+>
+ and <TT
+CLASS="FILENAME"
+>user.action</TT
+> file and see how all these pieces come together:</P
+><DIV
+CLASS="SECT3"
+><H3
+CLASS="SECT3"
+><A
+NAME="AEN4524"
+>8.7.1. match-all.action</A
+></H3
+><P
+> Remember <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>all actions are disabled when matching starts</I
+></SPAN
+>,
+ so we have to explicitly enable the ones we want.</P
+><P
+> While the <TT
+CLASS="FILENAME"
+>match-all.action</TT
+> file only contains a
+ single section, it is probably the most important one. It has only one
+ pattern, <SPAN
+CLASS="QUOTE"
+>"<TT
+CLASS="LITERAL"
+>/</TT
+>"</SPAN
+>, but this pattern
+ <A
+HREF="actions-file.html#AF-PATTERNS"
+>matches all URLs</A
+>. Therefore, the set of
+ actions used in this <SPAN
+CLASS="QUOTE"
+>"default"</SPAN
+> section <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>will
+ be applied to all requests as a start</I
+></SPAN
+>. It can be partly or
+ wholly overridden by other actions files like <TT
+CLASS="FILENAME"
>default.action</TT
-> and <TT
+>
+ and <TT
CLASS="FILENAME"
>user.action</TT
->
- file and see how all these pieces come together:</P
-><DIV
-CLASS="SECT3"
-><H3
-CLASS="SECT3"
-><A
-NAME="AEN4017"
-></A
->8.7.1. default.action</H3
+>, but it will still be largely responsible
+ for your overall browsing experience.</P
><P
->Every config file should start with a short comment stating its purpose:</P
+> Again, at the start of matching, all actions are disabled, so there is
+ no need to disable any actions here. (Remember: a <SPAN
+CLASS="QUOTE"
+>"+"</SPAN
+>
+ preceding the action name enables the action, a <SPAN
+CLASS="QUOTE"
+>"-"</SPAN
+> disables!).
+ Also note how this long line has been made more readable by splitting it into
+ multiple lines with line continuation.</P
><P
> <TABLE
BORDER="0"
><TD
><PRE
CLASS="SCREEN"
-># Sample default.action file <ijbswa-developers@lists.sourceforge.net></PRE
+>{ \
+ +<A
+HREF="actions-file.html#CHANGE-X-FORWARDED-FOR"
+>change-x-forwarded-for{block}</A
+> \
+ +<A
+HREF="actions-file.html#HIDE-FROM-HEADER"
+>hide-from-header{block}</A
+> \
+ +<A
+HREF="actions-file.html#SET-IMAGE-BLOCKER"
+>set-image-blocker{pattern}</A
+> \
+}
+/ # Match all URLs
+ </PRE
></TD
></TR
></TABLE
></P
><P
->Then, since this is the <TT
+> The default behavior is now set.</P
+></DIV
+><DIV
+CLASS="SECT3"
+><H3
+CLASS="SECT3"
+><A
+NAME="AEN4546"
+>8.7.2. default.action</A
+></H3
+><P
+> If you aren't a developer, there's no need for you to edit the
+ <TT
+CLASS="FILENAME"
+>default.action</TT
+> file. It is maintained by
+ the <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> developers and if you disagree with some of the
+ sections, you should overrule them in your <TT
+CLASS="FILENAME"
+>user.action</TT
+>.</P
+><P
+> Understanding the <TT
CLASS="FILENAME"
>default.action</TT
-> file, the
-first section is a special section for internal use that you needn't
-change or worry about:</P
+> file can
+ help you with your <TT
+CLASS="FILENAME"
+>user.action</TT
+>, though.</P
+><P
+> The first section in this file is a special section for internal use
+ that prevents older <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> versions from reading the file:</P
><P
> <TABLE
BORDER="0"
>##########################################################################
# Settings -- Don't change! For internal Privoxy use ONLY.
##########################################################################
-
{{settings}}
-for-privoxy-version=3.0</PRE
+for-privoxy-version=3.0.11</PRE
></TD
></TR
></TABLE
></P
><P
->After that comes the (optional) alias section. We'll use the example
-section from the above <A
+> After that comes the (optional) alias section. We'll use the example
+
section from the above <A
HREF="actions-file.html#ALIASES"
>chapter on aliases</A
>,
-that also explains why and how aliases are used:</P
+ that also explains why and how aliases are used:</P
><P
> <TABLE
BORDER="0"
HREF="actions-file.html#CRUNCH-OUTGOING-COOKIES"
>crunch-outgoing-cookies</A
>
- +block-as-image = +block +handle-as-image
+ +block-as-image = +block{Blocked image.} +handle-as-image
mercy-for-cookies = -crunch-all-cookies -<A
HREF="actions-file.html#SESSION-COOKIES-ONLY"
>session-cookies-only</A
> -<A
HREF="actions-file.html#HIDE-REFERER"
>hide-referrer</A
-> -<A
-HREF="actions-file.html#KILL-POPUPS"
->kill-popups</A
>
shop = -crunch-all-cookies -<A
HREF="actions-file.html#FILTER-ALL-POPUPS"
>filter{all-popups}</A
-> -<A
-HREF="actions-file.html#KILL-POPUPS"
->kill-popups</A
></PRE
></TD
></TR
></TABLE
></P
><P
-> Now come the regular sections, i.e. sets of actions, accompanied
- by URL patterns to which they apply. Remember <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->all actions
- are disabled when matching starts</I
-></SPAN
->, so we have to explicitly
- enable the ones we want.</P
-><P
-> The first regular section is probably the most important. It has only
- one pattern, <SPAN
-CLASS="QUOTE"
->"<TT
-CLASS="LITERAL"
->/</TT
->"</SPAN
->, but this pattern
- <A
-HREF="actions-file.html#AF-PATTERNS"
->matches all URLs</A
->. Therefore, the
- set of actions used in this <SPAN
-CLASS="QUOTE"
->"default"</SPAN
-> section <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->will
- be applied to all requests as a start</I
-></SPAN
->. It can be partly or
- wholly overridden by later matches further down this file, or in user.action,
- but it will still be largely responsible for your overall browsing
- experience.</P
-><P
-> Again, at the start of matching, all actions are disabled, so there is
- no real need to disable any actions here, but we will do that nonetheless,
- to have a complete listing for your reference. (Remember: a <SPAN
-CLASS="QUOTE"
->"+"</SPAN
->
- preceding the action name enables the action, a <SPAN
-CLASS="QUOTE"
->"-"</SPAN
-> disables!).
- Also note how this long line has been made more readable by splitting it into
- multiple lines with line continuation.</P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="100%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->##########################################################################
-# "Defaults" section:
-##########################################################################
- { \
- -<A
-HREF="actions-file.html#ADD-HEADER"
->add-header</A
-> \
- -<A
-HREF="actions-file.html#BLOCK"
->block</A
-> \
- -<A
-HREF="actions-file.html#CONTENT-TYPE-OVERWRITE"
->content-type-overwrite</A
-> \
- -<A
-HREF="actions-file.html#CRUNCH-CLIENT-HEADER"
->crunch-client-header</A
-> \
- -<A
-HREF="actions-file.html#CRUNCH-IF-NONE-MATCH"
->crunch-if-none-match</A
-> \
- -<A
-HREF="actions-file.html#CRUNCH-INCOMING-COOKIES"
->crunch-incoming-cookies</A
-> \
- -<A
-HREF="actions-file.html#CRUNCH-SERVER-HEADER"
->crunch-server-header</A
-> \
- -<A
-HREF="actions-file.html#CRUNCH-OUTGOING-COOKIES"
->crunch-outgoing-cookies</A
-> \
- +<A
-HREF="actions-file.html#DEANIMATE-GIFS"
->deanimate-gifs</A
-> \
- -<A
-HREF="actions-file.html#DOWNGRADE-HTTP-VERSION"
->downgrade-http-version</A
-> \
- -<A
-HREF="actions-file.html#FAST-REDIRECTS"
->fast-redirects{check-decoded-url}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-JS-ANNOYANCES"
->filter{js-annoyances}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-JS-EVENTS"
->filter{js-events}</A
-> \
- +<A
-HREF="actions-file.html#FILTER-HTML-ANNOYANCES"
->filter{html-annoyances}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-CONTENT-COOKIES"
->filter{content-cookies}</A
-> \
- +<A
-HREF="actions-file.html#FILTER-REFRESH-TAGS"
->filter{refresh-tags}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-UNSOLICITED-POPUPS"
->filter{unsolicited-popups}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-ALL-POPUPS"
->filter{all-popups}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-IMG-REORDER"
->filter{img-reorder}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-BANNERS-BY-SIZE"
->filter{banners-by-size}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-BANNERS-BY-LINK"
->filter{banners-by-link}</A
-> \
- +<A
-HREF="actions-file.html#FILTER-WEBBUGS"
->filter{webbugs}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-TINY-TEXTFORMS"
->filter{tiny-textforms}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-JUMPING-WINDOWS"
->filter{jumping-windows}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-FRAMESET-BORDERS"
->filter{frameset-borders}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-DEMORONIZER"
->filter{demoronizer}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-SHOCKWAVE-FLASH"
->filter{shockwave-flash}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-QUICKTIME-KIOSKMODE"
->filter{quicktime-kioskmode}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-FUN"
->filter{fun}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-CRUDE-PARENTAL"
->filter{crude-parental}</A
-> \
- +<A
-HREF="actions-file.html#FILTER-IE-EXPLOITS"
->filter{ie-exploits}</A
-> \
- -<A
-HREF="actions-file.html#FILTER-CLIENT-HEADERS"
->filter-client-headers</A
-> \
- -<A
-HREF="actions-file.html#FILTER-SERVER-HEADERS"
->filter-server-headers</A
-> \
- -<A
-HREF="actions-file.html#FILTER-GOOGLE"
->filter-google</A
-> \
- -<A
-HREF="actions-file.html#FILTER-YAHOO"
->filter-yahoo</A
-> \
- -<A
-HREF="actions-file.html#FILTER-MSN"
->filter-msn</A
-> \
- -<A
-HREF="actions-file.html#FILTER-BLOGSPOT"
->filter-blogspot</A
-> \
- -<A
-HREF="actions-file.html#FILTER-XML-TO-HTML"
->filter-xml-to-html</A
-> \
- -<A
-HREF="actions-file.html#FILTER-HTML-TO-XML"
->filter-html-to-xml</A
-> \
- -<A
-HREF="actions-file.html#FILTER-NO-PING"
->filter-no-ping</A
-> \
- -<A
-HREF="actions-file.html#FILTER-HIDE-TOR-EXIT-NOTATION"
->filter-hide-tor-exit-notation</A
-> \
- -<A
-HREF="actions-file.html#FORCE-TEXT-MODE"
->force-text-mode</A
-> \
- -<A
-HREF="actions-file.html#HANDLE-AS-EMPTY-DOCUMENT"
->handle-as-empty-document</A
-> \
- -<A
-HREF="actions-file.html#HANDLE-AS-IMAGE"
->handle-as-image</A
-> \
- -<A
-HREF="actions-file.html#HIDE-ACCEPT-LANGUAGE"
->hide-accept-language</A
-> \
- -<A
-HREF="actions-file.html#HIDE-CONTENT-DISPOSITION"
->hide-content-disposition</A
-> \
- -<A
-HREF="actions-file.html#HIDE-IF-MODIFIED-SINCE"
->hide-if-modified-since</A
-> \
- +<A
-HREF="actions-file.html#HIDE-FORWARDED-FOR-HEADERS"
->hide-forwarded-for-headers</A
-> \
- +<A
-HREF="actions-file.html#HIDE-FROM-HEADER"
->hide-from-header{block}</A
-> \
- +<A
-HREF="actions-file.html#HIDE-REFERER"
->hide-referrer{forge}</A
-> \
- -<A
-HREF="actions-file.html#HIDE-USER-AGENT"
->hide-user-agent</A
-> \
- -<A
-HREF="actions-file.html#INSPECT-JPEGS"
->inspect-jpegs</A
-> \
- -<A
-HREF="actions-file.html#KILL-POPUPS"
->kill-popups</A
-> \
- -<A
-HREF="actions-file.html#LIMIT-CONNECT"
->limit-connect</A
-> \
- +<A
-HREF="actions-file.html#PREVENT-COMPRESSION"
->prevent-compression</A
-> \
- -<A
-HREF="actions-file.html#OVERWRITE-LAST-MODIFIED"
->overwrite-last-modified</A
-> \
- -<A
-HREF="actions-file.html#REDIRECT"
->redirect</A
-> \
- -<A
-HREF="actions-file.html#SEND-VANILLA-WAFER"
->send-vanilla-wafer</A
-> \
- -<A
-HREF="actions-file.html#SEND-WAFER"
->send-wafer</A
-> \
- +<A
-HREF="actions-file.html#SESSION-COOKIES-ONLY"
->session-cookies-only</A
-> \
- +<A
-HREF="actions-file.html#SET-IMAGE-BLOCKER"
->set-image-blocker{pattern}</A
-> \
- -<A
-HREF="actions-file.html#TREAT-FORBIDDEN-CONNECTS-LIKE-BLOCKS"
->treat-forbidden-connects-like-blocks</A
-> \
- }
- / # forward slash will match *all* potential URL patterns.</PRE
-></TD
-></TR
-></TABLE
-></P
-><P
-> The default behavior is now set. Note that some actions, like not hiding
- the user agent, are part of a <SPAN
-CLASS="QUOTE"
->"general policy"</SPAN
-> that applies
- universally and won't get any exceptions defined later. Other choices,
- like not blocking (which is <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->understandably</I
-></SPAN
-> the
- default!) need exceptions, i.e. we need to specify explicitly what we
- want to block in later sections.</P
-><P
> The first of our specialized sections is concerned with <SPAN
CLASS="QUOTE"
>"fragile"</SPAN
>fast-redirects</A
></TT
>
- action, which we enabled per default above, breaks some sites. So disable
- it for popular sites where we know it misbehaves:</P
+ action, which may have been enabled in <TT
+CLASS="FILENAME"
+>match-all.action</TT
+>,
+ breaks some sites. So disable it for popular sites where we know it misbehaves:</P
><P
> <TABLE
BORDER="0"
be blocked, a substitute image can be sent, rather than an HTML page.
Contacting the remote site to find out is not an option, since it
would destroy the loading time advantage of banner blocking, and it
- would feed the advertisers (in terms of money <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->and</I
-></SPAN
->
- information). We can mark any URL as an image with the <TT
+ would feed the advertisers information about you. We can mark any
+ URL as an image with the <TT
CLASS="LITERAL"
><A
HREF="actions-file.html#HANDLE-AS-IMAGE"
##########################################################################
{ <A
HREF="actions-file.html#BLOCK"
->+block</A
+>+block{Banner ads.}</A
> }
# Generic patterns:
><H3
CLASS="SECT3"
><A
-NAME="AEN4206"
-></A
->8.7.2. user.action</H3
+NAME="AEN4659"
+>8.7.3. user.action</A
+></H3
><P
> So far we are painting with a broad brush by setting general policies,
which would be a reasonable starting point for many people. Now,
><TD
><PRE
CLASS="SCREEN"
-># My user.action file. <fred@foobar.com></PRE
+># My user.action file. <fred@example.com></PRE
></TD
></TR
></TABLE
+crunch-all-cookies = +crunch-incoming-cookies +crunch-outgoing-cookies
-crunch-all-cookies = -crunch-incoming-cookies -crunch-outgoing-cookies
allow-all-cookies = -crunch-all-cookies -session-cookies-only
- allow-popups = -filter{all-popups} -kill-popups
-+block-as-image = +block +handle-as-image
+ allow-popups = -filter{all-popups}
++block-as-image = +block{Blocked as image.} +handle-as-image
-block-as-image = -block
# These aliases define combinations of actions that are useful for
# certain types of sites:
#
-fragile = -block -crunch-all-cookies -filter -fast-redirects -hide-referrer -kill-popups
+fragile = -block -crunch-all-cookies -filter -fast-redirects -hide-referrer
shop = -crunch-all-cookies allow-popups
# Allow ads for selected useful free sites:
and pasted the URL below while removing the leading http://, into a
<TT
CLASS="LITERAL"
->{ +block }</TT
+>{ +block{} }</TT
> section. Note that <TT
CLASS="LITERAL"
>{ +handle-as-image
>{ +<A
HREF="actions-file.html#BLOCK"
>block</A
-> }
- www.example.com/nasty-ads/sponsor.gif
- another.popular.site.net/more/junk/here/</PRE
+>{Nasty ads.} }
+ www.example.com/nasty-ads/sponsor\.gif
+ another.example.net/more/junk/here/</PRE
></TD
></TR
></TABLE
CLASS="FILENAME"
>default.filter</TT
>,
- but it is disabled in the distributed actions file. (My colleagues on the team just
- don't have a sense of humour, that's why! ;-). So you'd like to turn it on in your private,
+ but it is disabled in the distributed actions file.
+ So you'd like to turn it on in your private,
update-safe config, once and for all:</P
><P
><TABLE
projects / privoxy.git / blobdiff