From 7a35c92cb9a941fc6f53e5840c00a3e722b2c6d3 Mon Sep 17 00:00:00 2001 From: spalax Date: Sun, 14 Jun 2015 22:00:55 -0400 Subject: [PATCH] Potential bug with external plugins --- doc/bugs/Error_with_external_plugins.mdwn | 35 +++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 doc/bugs/Error_with_external_plugins.mdwn diff --git a/doc/bugs/Error_with_external_plugins.mdwn b/doc/bugs/Error_with_external_plugins.mdwn new file mode 100644 index 000000000..5648678fb --- /dev/null +++ b/doc/bugs/Error_with_external_plugins.mdwn @@ -0,0 +1,35 @@ +Hello, +I stumbled upon this bug when writing a Python plugin. I think this is a ikiwiki bug, since I do not think my plugin does anything wrong. + +# Example + +I set up an example wiki, containing the setup file and the plugin, [[on github|https://github.com/paternal/ikiwiki-rpcbug]]. + +1. Clone the repository + + git clone https://github.com/paternal/ikiwiki-rpcbug.git + +2. Change to the right directory + + cd ikiwiki-rpcbug + +2. Add the right ikiwiki directory to PYTHONPATH + + export PYTHONPATH="$PYTHONPATH:$(dirname $(dpkg -L ikiwiki | grep proxy))" + +3. Build the wiki + + ikiwiki --setup wiki.setup --rebuild + +4. The problem is in page [[http://localhost/~USERNAME/ikiwiki_bug_rpc/foo/]] (for instance, [[http://localhost/~USERNAME/ikiwiki_bug_rpc]] is fine. + +# Problem + +Page `foo` contains the directive ``[[!rpcbug]]`` (`rpcbug` being the name of the plugin). Calling [[``proxy.rpc("srcfile", "bar")``|https://github.com/paternal/ikiwiki-rpcbug/blob/master/plugins/rpcbug#L15]] in the preprocess function seems to mess up the RPC communication between ikiwiki and the plugin, and the result is that the generate `foo/index.html` page is a text file containing the return value of the `preprocess` call. + +What I do not understand is that disabling the `format` function (by commenting [[line 46 of the plugin|https://github.com/paternal/ikiwiki-rpcbug/blob/master/plugins/rpcbug#L46]]) solves the problem. Half of an explaination is that I think that when the the ``proxy.rpc`` function is called, the RPC communication is messed up in such a way that the `format` function is not called, and the return value of `preprocess` is considered to be the whole html code of the resulting page. + +I hope someone will understand the problem better than I do, because I have no idea about how to solve this. + +Regards, +-- Louis -- 2.39.5