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2021-07-08Add basic support for virtual hostsDaniel Schadt
We can technically do vhosts with our current infrastructure of route matching, but they should get some better support. Otherwise, we cannot use things like SNI (server name indication) to send different credentials depending on the virtual host. The way it works now is basically that the server keeps a list of installed vhosts, each with a domain that it matches and a loaded certificate. Route matching in a vhost is still done the same old way, but only routes for the matching vhost are considered in the first place. The API for runGeminiServer does not change, so the proper, vhost-using API, will need a different function and API.
2021-06-30CGI: Properly relay UTF-8 encoded textDaniel Schadt
The culprit was using "pack" to go from the String (which we get from readProcess) to the ByteString (which we need to have in the response). Since "pack" just throws away all the good codepoints, we ended up with a minor case of mojibake. There are two possible solutions to this issue: 1) Properly encode the text from String to ByteString using utf8-string's function or 2) Read a ByteString from the process by using process-extras Solution 1 works, but it has the side effect of assuming the process's output encoding (based on the LOCALE). Furthermore, we cannot even be sure that the script doesn't send a completely different encoding via the charset header field. Therefore, this would introduce 2 points at which character encoding mismatches could happen, which is not something we're looking forward to. Solution 2 has the benefit of just passing through the data basically unchanged. We don't need to convert the ByteString to a textual string ourselves, so that is a big benefit. The only thing where we now have UTF-8 conversion is when giving the request URI to the CGI script, but 1) URIs should be ASCII & percent encoded anyway, so there's no big chance of failure and 2) Now we are using UTF8.fromString properly
2021-06-30Give a reply to the server if a route failsDaniel Schadt
Otherwise, the server will never get a reply and instead we'll just silently let the client timeout :-( This change introduces the function "uncatch", which makes an error the inner Cana computation explicit by returning the Either directly. With the way this is written currently, we could probably get away with using "catch" as well, along the lines of r geminiRequest `catch` (const $ writeResponse context ...)
2021-06-30CGI: Don't silently ignore exceptionsDaniel Schadt
2021-06-30implement basic CGI handlerDaniel Schadt
2021-06-30Get rid of utf8-stringDaniel Schadt
Turns out that Char8.unpack is enough for our purposes, so we don't need the utf8-string module.
2021-06-30Implement parseResponseDaniel Schadt
2021-06-29fix handling of empty path segmentDaniel Schadt
Now, 'gemini://localhost' is treated the same as 'gemini://localhost/', and will display the index instead of raising a 51.
2021-06-29Add static file serverDaniel Schadt
Some simple code that allows Cana to serve files from a directory, and not just provide static responses.
2021-06-28Initial commitDaniel Schadt
This is a working version that can serve pages, yay! A lot of features still missing though, as well as proper package metadata.