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+[dependencies] +axum = "0.7.4" +camino = "1.1.6" +snafu = "0.8.0" diff --git a/readme.md b/readme.md new file mode 100644 index 0000000..c7a1258 --- /dev/null +++ b/readme.md @@ -0,0 +1,13 @@ +## Dirfiles +These are files that match the name of the directory. + +The problem with a normal `index.html` is that you need the full path to get a +semblance of what the file is for. This can be solved by matching the served +file of a directory to it's name. For example, a `multimedia/` would have it's +`index.html` renamed to `multimedia.html`. This does, however, make it harder +to change the name/path of directories as you'll have to rename the dirfile if +the directory name changes. + +What do you name the root file, then? You shouldn't have to match the webroot's +directory name. Perhaps it should be configurable. I think for now we'll +hard-code in `home.html`, though. \ No newline at end of file diff --git a/src/fs.rs b/src/fs.rs new file mode 100644 index 0000000..e13f405 --- /dev/null +++ b/src/fs.rs @@ -0,0 +1,206 @@ +use camino::{Utf8Path, Utf8PathBuf}; +use std::{io, ops::Deref, str::FromStr}; + +/// Webpath is the path we get from HTTP requests. It's garunteed to not fall +/// below the webroot and will never start or end with a slash. +#[derive(Clone, Debug, PartialEq)] +pub struct Webpath { + webcanon: Utf8PathBuf, +} + +impl FromStr for Webpath { + type Err = RuntimeError; + + fn from_str(raw: &str) -> Result { + let mut curr = Utf8PathBuf::new(); + + for component in raw.split('/') { + match component { + "." => continue, + ".." => { + if !curr.pop() { + return Err(RuntimeError::PathTooLow { + path: raw.to_owned(), + }); + } + } + comp => curr.push(comp), + } + } + + Ok(Self { webcanon: curr }) + } +} + +impl Webpath { + /// Return whether or not this Webpath is empty which would indicate it's + /// the homepage. + pub fn is_index(&self) -> bool { + self.webcanon == "" + } +} + +impl Deref for Webpath { + type Target = Utf8Path; + + fn deref(&self) -> &Self::Target { + &self.webcanon + } +} + +impl AsRef for Webpath { + fn as_ref(&self) -> &Utf8Path { + &self.webcanon + } +} + +impl PartialEq for Webpath { + fn eq(&self, other: &str) -> bool { + self.webcanon.eq(other) + } +} + +const ROOT_INDEX: &str = "home.html"; +const DIRFILE_EXT: &str = "html"; + +pub struct Filesystem { + webroot: Utf8PathBuf, +} + +impl Filesystem { + pub fn new>(root: P) -> Self { + Self { + webroot: root.into(), + } + } + + fn resolve(&self, webpath: &Webpath) -> Result { + if webpath.is_index() || webpath == ROOT_INDEX { + return Ok(self.webroot.join(ROOT_INDEX)); + } + + let path = self.webroot.join(webpath); + let metadata = Self::metadata(&path)?; + + // If it's a file then return the path immediatly + if metadata.is_file() { + Ok(path) + } else { + // we check this above. but still.. + //TODO: gen- probably don't unwrap + let filename = path.file_name().unwrap(); + let dirfile = path.join(format!("{filename}.{DIRFILE_EXT}")); + + if dirfile.exists() { + Ok(dirfile) + } else { + Err(RuntimeError::NotFound { + source: io::ErrorKind::NotFound.into(), + path: dirfile, + }) + } + } + } + + fn metadata>(path: P) -> Result { + path.as_ref() + .metadata() + .map_err(|ioe| RuntimeError::from_io(ioe, path.as_ref().to_owned())) + } +} + +#[derive(Debug, snafu::Snafu)] +pub enum RuntimeError { + #[snafu(display("the path was not found: {path}"))] + NotFound { + source: io::Error, + path: Utf8PathBuf, + }, + #[snafu(display("io error: {path}: {source}"))] + UnknownIo { + source: io::Error, + path: Utf8PathBuf, + }, + #[snafu(display("path tried to go below webroot: {path}"))] + PathTooLow { path: String }, +} + +impl RuntimeError { + pub fn from_io(source: io::Error, path: Utf8PathBuf) -> Self { + match source.kind() { + io::ErrorKind::NotFound => RuntimeError::NotFound { source, path }, + _ => RuntimeError::UnknownIo { source, path }, + } + } +} + +#[cfg(test)] +mod test { + use std::str::FromStr; + + use crate::fs::{Webpath, ROOT_INDEX}; + + use super::Filesystem; + + macro_rules! webpath { + ($location:expr) => { + Webpath::from_str($location).unwrap() + }; + } + + #[test] + fn webpath_finds_too_low() { + assert!(Webpath::from_str("/..").is_err()); + assert!(Webpath::from_str("/one/..").is_ok()); + assert!(Webpath::from_str("/one/../..").is_err()); + assert!(Webpath::from_str("/one/../two").is_ok()) + } + + #[test] + fn webpath_path_correct() { + assert_eq!(Webpath::from_str("/one").unwrap().webcanon, "one"); + assert_eq!(Webpath::from_str("/one/..").unwrap().webcanon, ""); + assert_eq!(Webpath::from_str("/one/two/..").unwrap().webcanon, "one"); + assert_eq!(Webpath::from_str("/one/../two").unwrap().webcanon, "two"); + assert_eq!( + Webpath::from_str("/one/two/three/..").unwrap().webcanon, + "one/two" + ); + assert_eq!( + Webpath::from_str("/one/../home.html").unwrap().webcanon, + "home.html" + ); + } + + const TESTROOT: &str = "test/serve"; + + #[test] + fn filesystem_resolves_index() { + let fs = Filesystem::new(TESTROOT); + assert_eq!( + fs.resolve(&webpath!("/")).unwrap(), + format!("{TESTROOT}/{ROOT_INDEX}") + ); + assert_eq!( + fs.resolve(&webpath!("/one/..")).unwrap(), + format!("{TESTROOT}/{ROOT_INDEX}") + ); + } + + #[test] + fn filesystem_resolves_dirfile() { + let fs = Filesystem::new(TESTROOT); + assert_eq!( + fs.resolve(&webpath!("/one")).unwrap(), + format!("{TESTROOT}/one/one.html") + ); + assert_eq!( + fs.resolve(&webpath!("/one/eleven/")).unwrap(), + format!("{TESTROOT}/one/eleven/eleven.html") + ); + assert_eq!( + fs.resolve(&webpath!("/one/eleven/..")).unwrap(), + format!("{TESTROOT}/one/one.html") + ); + } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..1ba94f7 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,3 @@ +mod fs; + +fn main() {} diff --git a/test/serve/home.html b/test/serve/home.html new file mode 100644 index 0000000..94e2d40 --- /dev/null +++ b/test/serve/home.html @@ -0,0 +1,7 @@ + + + +

Webroot home.html

+ one + + \ No newline at end of file diff --git a/test/serve/one/dotone.html b/test/serve/one/dotone.html new file mode 100644 index 0000000..d880da2 --- /dev/null +++ b/test/serve/one/dotone.html @@ -0,0 +1,13 @@ + + + + +

one/dotone.html

+

+ just a file in the one/ directory. +

+ back
+ dirfile + + + \ No newline at end of file diff --git a/test/serve/one/eleven/eleven.html b/test/serve/one/eleven/eleven.html new file mode 100644 index 0000000..c739c53 --- /dev/null +++ b/test/serve/one/eleven/eleven.html @@ -0,0 +1,10 @@ + + + + +

One/eleven/eleven.html

+ one + home + + + \ No newline at end of file diff --git a/test/serve/one/one.html b/test/serve/one/one.html new file mode 100644 index 0000000..2eef7b1 --- /dev/null +++ b/test/serve/one/one.html @@ -0,0 +1,12 @@ + + + + +

One/one.html

+

+ this is the file served for the one/ directory. +

+ dotone.html + + + \ No newline at end of file diff --git a/test/serve/two/two.html b/test/serve/two/two.html new file mode 100644 index 0000000..4fe965b --- /dev/null +++ b/test/serve/two/two.html @@ -0,0 +1,9 @@ + + + + +

two/two.html

+ home + + + \ No newline at end of file -- cgit 1.4.1-3-g733a5