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authorTrinity Pointard <trinity.pointard@gmail.com>2021-11-11 11:26:02 +0100
committerGitea <gitea@fake.local>2021-11-16 15:41:41 +0100
commit9c58ec28d3b23accf782c6eb005b7c3966ec6314 (patch)
treea328628c5fb6c6067dbe06ef7d5af8b5f645d15d /src/api/helpers.rs
parentcdeb5b4dbb7ed95c7ff19f5d1cccdd69b5104c45 (diff)
downloadgarage-9c58ec28d3b23accf782c6eb005b7c3966ec6314.tar.gz
garage-9c58ec28d3b23accf782c6eb005b7c3966ec6314.zip
add support for vhost-style s3 bucket
Diffstat (limited to 'src/api/helpers.rs')
-rw-r--r--src/api/helpers.rs114
1 files changed, 114 insertions, 0 deletions
diff --git a/src/api/helpers.rs b/src/api/helpers.rs
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+++ b/src/api/helpers.rs
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+use crate::Error;
+use idna::domain_to_unicode;
+
+/// Host to bucket
+///
+/// Convert a host, like "bucket.garage-site.tld" or "john.doe.com"
+/// to the corresponding bucket, resp. "bucket" and "john.doe.com"
+/// considering that ".garage-site.tld" is the "root domain".
+/// This behavior has been chosen to follow AWS S3 semantic.
+pub fn host_to_bucket<'a>(host: &'a str, root: &str) -> Option<&'a str> {
+ let root = root.trim_start_matches('.');
+ let label_root = root.chars().filter(|c| c == &'.').count() + 1;
+ let root = root.rsplit('.');
+ let mut host = host.rsplitn(label_root + 1, '.');
+ for root_part in root {
+ let host_part = host.next()?;
+ if root_part != host_part {
+ return None;
+ }
+ }
+ host.next()
+}
+
+/// Extract host from the authority section given by the HTTP host header
+///
+/// The HTTP host contains both a host and a port.
+/// Extracting the port is more complex than just finding the colon (:) symbol due to IPv6
+/// We do not use the collect pattern as there is no way in std rust to collect over a stack allocated value
+/// check here: https://docs.rs/collect_slice/1.2.0/collect_slice/
+pub fn authority_to_host(authority: &str) -> Result<String, Error> {
+ let mut iter = authority.chars().enumerate();
+ let (_, first_char) = iter
+ .next()
+ .ok_or_else(|| Error::BadRequest("Authority is empty".to_string()))?;
+
+ let split = match first_char {
+ '[' => {
+ let mut iter = iter.skip_while(|(_, c)| c != &']');
+ match iter.next() {
+ Some((_, ']')) => iter.next(),
+ _ => {
+ return Err(Error::BadRequest(format!(
+ "Authority {} has an illegal format",
+ authority
+ )))
+ }
+ }
+ }
+ _ => iter.find(|(_, c)| *c == ':'),
+ };
+
+ let authority = match split {
+ Some((i, ':')) => Ok(&authority[..i]),
+ None => Ok(authority),
+ Some((_, _)) => Err(Error::BadRequest(format!(
+ "Authority {} has an illegal format",
+ authority
+ ))),
+ };
+ authority.map(|h| domain_to_unicode(h).0)
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn authority_to_host_with_port() -> Result<(), Error> {
+ let domain = authority_to_host("[::1]:3902")?;
+ assert_eq!(domain, "[::1]");
+ let domain2 = authority_to_host("garage.tld:65200")?;
+ assert_eq!(domain2, "garage.tld");
+ let domain3 = authority_to_host("127.0.0.1:80")?;
+ assert_eq!(domain3, "127.0.0.1");
+ Ok(())
+ }
+
+ #[test]
+ fn authority_to_host_without_port() -> Result<(), Error> {
+ let domain = authority_to_host("[::1]")?;
+ assert_eq!(domain, "[::1]");
+ let domain2 = authority_to_host("garage.tld")?;
+ assert_eq!(domain2, "garage.tld");
+ let domain3 = authority_to_host("127.0.0.1")?;
+ assert_eq!(domain3, "127.0.0.1");
+ assert!(authority_to_host("[").is_err());
+ assert!(authority_to_host("[hello").is_err());
+ Ok(())
+ }
+
+ #[test]
+ fn host_to_bucket_test() {
+ assert_eq!(
+ host_to_bucket("john.doe.garage.tld", ".garage.tld").unwrap(),
+ "john.doe"
+ );
+
+ assert_eq!(
+ host_to_bucket("john.doe.garage.tld", "garage.tld").unwrap(),
+ "john.doe"
+ );
+
+ assert_eq!(host_to_bucket("john.doe.com", "garage.tld"), None);
+
+ assert_eq!(host_to_bucket("john.doe.com", ".garage.tld"), None);
+
+ assert_eq!(host_to_bucket("garage.tld", "garage.tld"), None);
+
+ assert_eq!(host_to_bucket("garage.tld", ".garage.tld"), None);
+
+ assert_eq!(host_to_bucket("not-garage.tld", "garage.tld"), None);
+ assert_eq!(host_to_bucket("not-garage.tld", ".garage.tld"), None);
+ }
+}