X-Git-Url: http://www.privoxy.org/gitweb/?a=blobdiff_plain;f=doc%2Fsource%2Fuser-manual.sgml;h=b4a32574692901eca39cb39fcbc79ad3b9415191;hb=2c1bb41e1bd7549e455c2398ff923c003613ba17;hp=0046398c57ad61a13107585e2794a92d6d0dd6fb;hpb=3745c566a0be9e2e7efcc7ec4e2db16e66a840fb;p=privoxy.git
diff --git a/doc/source/user-manual.sgml b/doc/source/user-manual.sgml
index 0046398c..b4a32574 100644
--- a/doc/source/user-manual.sgml
+++ b/doc/source/user-manual.sgml
@@ -13,11 +13,11 @@
-
-
+
+
-
-
+
+
@@ -36,9 +36,9 @@
This file belongs into
ijbswa.sourceforge.net:/home/groups/i/ij/ijbswa/htdocs/
- $Id: user-manual.sgml,v 2.180 2014/05/05 09:48:36 fabiankeil Exp $
+ $Id: user-manual.sgml,v 2.193 2014/07/18 10:01:39 fabiankeil Exp $
- Copyright (C) 2001-2013 Privoxy Developers http://www.privoxy.org/
+ Copyright (C) 2001-2014 Privoxy Developers http://www.privoxy.org/
See LICENSE.
========================================================================
@@ -57,12 +57,12 @@
- Copyright &my-copy; 2001-2013 by
+ Copyright &my-copy; 2001-2014 by
Privoxy Developers
-$Id: user-manual.sgml,v 2.180 2014/05/05 09:48:36 fabiankeil Exp $
+$Id: user-manual.sgml,v 2.193 2014/07/18 10:01:39 fabiankeil Exp $
-
Please see the section Contacting the
@@ -1458,10 +1446,7 @@ for details.
it as a test to see whether it is Privoxy
causing the problem or not. Privoxy continues
to run as a proxy in this case, but all manipulation is disabled, i.e.
- Privoxy acts like a normal forwarding proxy. There
- is even a toggle Bookmarklet offered, so
- that you can toggle Privoxy with one click from
- your browser.
+ Privoxy acts like a normal forwarding proxy.
@@ -3601,6 +3586,94 @@ problem-host.example.com
+
+
+external-filter
+
+
+
+ Typical use:
+
+ Modify content using a programming language of your choice.
+
+
+
+
+ Effect:
+
+
+ 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 external
+ filter.
+ By default plain text documents are exempted from filtering, because web
+ servers often use the text/plain MIME type for all files
+ whose type they don't know.)
+
+
+
+
+
+ Type:
+
+
+ Parameterized.
+
+
+
+
+ Parameter:
+
+
+ The name of an external content filter, as defined in the
+ filter file.
+ External filters can be defined in one or more files as defined by the
+ filterfile
+ option in the config file.
+
+
+ When used in its negative form,
+ and without parameters, all filtering with external
+ filters is completely disabled.
+
+
+
+
+
+ Notes:
+
+
+ External filters are scripts or programs that can modify the content in
+ case common filters
+ aren't powerful enough. With the exception that this action doesn't
+ use pcrs-based filters, the notes in the
+ filter section apply.
+
+
+
+ Currently external filters are executed with &my-app;'s privileges.
+ Only use external filters you understand and trust.
+
+
+
+ This feature is experimental, the syntax
+ may change in the future.
+
+
+
+
+
+
+ Example usage:
+
+
+ +external-filter{fancy-filter}
+
+
+
+
+
+
fast-redirects
@@ -4127,7 +4200,8 @@ new action
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.
+ to exit. Due to design limitations, invalid parameter syntax isn't detected until the
+ action is used the first time.
Use the show-url-info CGI page
@@ -4142,15 +4216,17 @@ new action
-# Always use direct connections for requests previously tagged as
+# Use an ssh tunnel for requests previously tagged as
# User-Agent: fetch libfetch/2.0 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 .} \
+{+forward-override{forward-socks5 10.0.0.2:2222 .} \
-hide-if-modified-since \
-overwrite-last-modified \
}
@@ -5280,9 +5356,15 @@ new action
filter file section.
- This action will be ignored if you use it together with
- block.
- It can be combined with
+ Requests can't be blocked and redirected at the same time,
+ applying this action together with
+ block
+ is a configuration error. Currently the request is blocked
+ and an error message logged, the behavior may change in the
+ future and result in Privoxy rejecting the action file.
+
+
+ This action can be combined with
fast-redirects{check-decoded-url}
to redirect to a decoded version of a rewritten URL.
@@ -5325,6 +5407,19 @@ undeadly.org/cgi\?action=article&sid=\d*$
{+redirect{s@^http://[^/]*/results\.aspx\?q=([^&]*).*@http://search.yahoo.com/search?p=$1@}}
search.msn.com//results\.aspx\?q=
+# Redirect http://example.com/&bla=fasel&toChange=foo (and any other value but "bar")
+# to http://example.com/&bla=fasel&toChange=bar
+#
+# The URL pattern makes sure that the following request isn't redirected again.
+{+redirect{s@toChange=[^&]+@toChange=bar@}}
+example.com/.*toChange=(?!bar)
+
+# Add a shortcut to look up illumos bugs
+{+redirect{s@^http://i([0-9]+)/.*@https://www.illumos.org/issues/$1@}}
+# Redirected URL = http://i4974/
+# Redirect Destination = https://www.illumos.org/issues/4974
+i[0-9][0-9][0-9][0-9]*/
+
# Redirect remote requests for this manual
# to the local version delivered by Privoxy
{+redirect{s@^http://www@http://config@}}
@@ -5493,6 +5588,14 @@ example.org/instance-that-is-delivered-as-xml-but-is-not
# Tag every request with the content type declared by the server
{+server-header-tagger{content-type}}
/
+
+# If the response has a tag starting with 'image/' enable an external
+# filter that only applies to images.
+#
+# Note that the filter is not available by default, it's just a
+# silly example.
+{+external-filter{rotate-image} +force-text-mode}
+TAG:^image/
@@ -6453,7 +6556,7 @@ stupid-server.example.com/
- &my-app; supports three different filter actions:
+ &my-app; supports three different pcrs-based filter actions:
filter to
rewrite the content that is send to the client,
client-header-filter
@@ -6473,6 +6576,13 @@ stupid-server.example.com/
applying actions through sections with tag-patterns.
+
+ Finally &my-app; supports the
+ external-filter action
+ to enable external filters
+ written in proper programming languages.
+
+
Multiple filter files can be defined through the
+
+
+External filter syntax
+
+ External filters are scripts or programs that can modify the content in
+ case common filters
+ aren't powerful enough.
+
+
+ External filters can be written in any language the platform &my-app; runs
+ on supports.
+
+
+ They are controlled with the
+ external-filter action
+ and have to be defined in the filterfile
+ first.
+
+
+ The header looks like any other filter, but instead of pcrs jobs, external
+ filters contain a single job which can be a program or a shell script (which
+ may call other scripts or programs).
+
+
+ External filters read the content from STDIN and write the rewritten
+ content to STDOUT. The environment variables PRIVOXY_URL, PRIVOXY_PATH,
+ PRIVOXY_HOST, PRIVOXY_ORIGIN can be used to get some details about the
+ client request.
+
+
+ &my-app; will temporary store the content to filter in the
+ temporary-directory.
+
+
+
+EXTERNAL-FILTER: cat Pointless example filter that doesn't actually modify the content
+/bin/cat
+
+# Incorrect reimplementation of the filter above in POSIX shell.
+#
+# Note that it's a single job that spans multiple lines, the line
+# breaks are not passed to the shell, thus the semicolons are required.
+#
+# If the script isn't trivial, it is recommended to put it into an external file.
+#
+# In general, writing external filters entirely in POSIX shell is not
+# considered a good idea.
+EXTERNAL-FILTER: cat2 Pointless example filter that despite its name may actually modify the content
+while read line; \
+do \
+ echo "$line"; \
+done
+
+EXTERNAL-FILTER: rotate-image Rotate an image by 180 degree. Test filter with limited value.
+/usr/local/bin/convert - -rotate 180 -
+
+EXTERNAL-FILTER: citation-needed Adds a "[citation needed]" tag to an image. The coordinates may need adjustment.
+/usr/local/bin/convert - -pointsize 16 -fill white -annotate +17+418 "[citation needed]" -
+
+
+
+
+
+ Currently external filters are executed with &my-app;'s privileges!
+ Only use external filters you understand and trust.
+
+
+
+ External filters are experimental and the syntax may change in the future.
+
+
+
@@ -7808,84 +7990,6 @@ Requests
-
- These may be bookmarked for quick reference. See next.
-
-
-
-
-Bookmarklets
-
- Below are some bookmarklets to allow you to easily access a
- mini version of some of Privoxy's
- special pages. They are designed for MS Internet Explorer, but should work
- equally well in Netscape, Mozilla, and other browsers which support
- JavaScript. They are designed to run directly from your bookmarks - not by
- clicking the links below (although that should work for testing).
-
-
- To save them, right-click the link and choose Add to Favorites
- (IE) or Add Bookmark (Netscape). You will get a warning that
- the bookmark may not be safe - just click OK. Then you can run the
- Bookmarklet directly from your favorites/bookmarks. For even faster access,
- you can put them on the Links bar (IE) or the Personal
- Toolbar (Netscape), and run them with a single click.
-
-
-
-
-
-
-
- Privoxy - Enable
-
-
-
-
-
- Privoxy - Disable
-
-
-
-
-
- Privoxy - Toggle Privoxy (Toggles between enabled and disabled)
-
-
-
-
-
- Privoxy- View Status
-
-
-
-
-
- Privoxy - Why?
-
-
-
-
-
-
- Credit: The site which gave us the general idea for these bookmarklets is
- www.bookmarklets.com. They
- have more information about bookmarklets.
-
-
-
-
-
@@ -8037,8 +8141,7 @@ Requests
One quick test to see if Privoxy is causing a problem
or not, is to disable it temporarily. This should be the first troubleshooting
- step. See the Bookmarklets section on a quick
- and easy way to do this (be sure to flush caches afterward!). Looking at the
+ step (be sure to flush caches afterward!). Looking at the
logs is a good idea too. (Note that both the toggle feature and logging are
enabled via config file settings, and may need to be
turned on.)