Added reverse proxy support from Kim Holviala. His comments regarding

this addition follow:

  The patch implements a simple reverse proxy (with one funky extra
  feature). It has all the regular features: mapping remote servers to local
  namespace (ReversePath), disabling forward proxying (ReverseOnly) and HTTP
  redirect rewriting (ReverseBaseURL).

  The funky feature is this: You map Google to /google/ and the Google front
  page opens up fine. Type in stuff and click "Google Search" and you'll get
  an error from tinyproxy. Reason for this is that Google's form submits to
  "/search" which unfortunately bypasses our /google/ mapping (if they'd
  submit to "search" without the slash it would have worked ok). Turn on
  ReverseMagic and it starts working....

  ReverseMagic "hijacks" one cookie which it sends to the client browser.
  This cookie contains the current reverse proxy path mapping (in the above
  case /google/) so that even if the site uses absolute links the reverse
  proxy still knows where to map the request.

  And yes, it works. No, I've never seen this done before - I couldn't find
  _any_ working OSS reverse proxies, and the commercial ones I've seen try
  to parse the page and fix all links (in the above case changing "/search"
  to "/google/search"). The problem with modifying the html is that it might
  not be parsable (very common) or it might be encoded so that the proxy
  can't read it (mod_gzip or likes).

  Hope you like that patch. One caveat - I haven't coded with C in like
  three years so my code might be a bit messy.... There shouldn't be any
  security problems thou, but you never know. I did all the stuff out of my
  memory without reading any RFC's, but I tested everything with Moz, Konq,
  IE6, Links and Lynx and they all worked fine.

1 files changed, 39 insertions, 0 deletions

diff --git a/doc/tinyproxy.conf b/doc/tinyproxy.conf
index 981cd26..d8af086 100644
--- a/doc/tinyproxy.conf
+++ b/doc/tinyproxy.conf
@@ -255,3 +255,42 @@ ViaProxyName "tinyproxy"
 #
 ConnectPort 443
 ConnectPort 563
+
+#
+# Configure one or more ReversePath directives to enable reverse proxy
+# support. With reverse proxying it's possible to make a number of
+# sites appear as if they were part of a single site.
+#
+# If you uncomment the following two directives and run tinyproxy
+# on your own computer at port 8888, you can access Google using
+# http://localhost:8888/google/ and Wired News using
+# http://localhost:8888/wired/news/. Neither will actually work
+# until you uncomment ReverseMagic as they use absolute linking.
+#
+#ReversePath "/google/"	"http://www.google.com/"
+#ReversePath "/wired/"	"http://www.wired.com/"
+
+#
+# When using tinyproxy as a reverse proxy, it is STRONGLY recommended
+# that the normal proxy is turned off by uncommenting the next directive.
+#
+#ReverseOnly Yes
+
+#
+# Use a cookie to track reverse proxy mappings. If you need to reverse
+# proxy sites which have absolute links you must uncomment this.
+#
+#ReverseMagic Yes
+
+#
+# The URL that's used to access this reverse proxy. The URL is used to
+# rewrite HTTP redirects so that they won't escape the proxy. If you
+# have a chain of reverse proxies, you'll need to put the outermost
+# URL here (the address which the end user types into his/her browser).
+#
+# If not set then no rewriting occurs.
+#
+#ReverseBaseURL "http://localhost:8888/"
+
+
+