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Diffstat (limited to 'adenosine-common/src/identifiers.rs')
| -rw-r--r-- | adenosine-common/src/identifiers.rs | 388 |
1 files changed, 0 insertions, 388 deletions
diff --git a/adenosine-common/src/identifiers.rs b/adenosine-common/src/identifiers.rs deleted file mode 100644 index 8a08ef3..0000000 --- a/adenosine-common/src/identifiers.rs +++ /dev/null @@ -1,388 +0,0 @@ -use anyhow::{anyhow, Result}; -use lazy_static::lazy_static; -use regex::Regex; -use std::fmt; -use std::ops::Deref; -use std::str::FromStr; -use std::time::SystemTime; - -#[derive(Debug, PartialEq, Eq, Clone)] -pub enum DidOrHost { - Did(String, String), - Host(String), -} - -impl FromStr for DidOrHost { - type Err = anyhow::Error; - - /// DID syntax is specified in: <https://w3c.github.io/did-core/#did-syntax> - /// - /// Lazy partial hostname regex, isn't very correct. - fn from_str(s: &str) -> Result<Self, Self::Err> { - lazy_static! { - static ref DID_RE: Regex = - Regex::new(r"^did:([a-z]{1,64}):([a-zA-Z0-9\-.]{1,1024})$").unwrap(); - } - lazy_static! { - static ref HOSTNAME_RE: Regex = - Regex::new(r"^[A-Za-z][A-Za-z0-9-]*(\.[A-Za-z][A-Za-z0-9-]*)+$").unwrap(); - } - if let Some(caps) = DID_RE.captures(s) { - Ok(Self::Did(caps[1].to_string(), caps[2].to_string())) - } else if HOSTNAME_RE.is_match(s) { - Ok(Self::Host(s.to_string())) - } else { - Err(anyhow!("does not match as a DID or hostname: {}", s)) - } - } -} - -impl fmt::Display for DidOrHost { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - match self { - Self::Host(v) => write!(f, "{}", v), - Self::Did(m, v) => write!(f, "did:{}:{}", m, v), - } - } -} - -#[test] -fn test_didorhost() { - assert_eq!( - DidOrHost::from_str("hyde.test").unwrap(), - DidOrHost::Host("hyde.test".to_string()) - ); - assert_eq!( - DidOrHost::from_str("did:method:blah").unwrap(), - DidOrHost::Did("method".to_string(), "blah".to_string()) - ); - - assert!(DidOrHost::from_str("barestring").is_err()); - assert!(DidOrHost::from_str("did:partial:").is_err()); - assert!(DidOrHost::from_str("").is_err()); - assert!(DidOrHost::from_str(" ").is_err()); - assert!(DidOrHost::from_str("1234").is_err()); - - assert!(DidOrHost::from_str("mutli.part.domain").is_ok()); - assert!(DidOrHost::from_str("did:is:weird").is_ok()); - assert!(DidOrHost::from_str("did:plc:bv6ggog3tya2z3vxsub7hnal").is_ok()); -} - -#[derive(Debug, PartialEq, Eq, Clone)] -pub struct AtUri { - pub repository: DidOrHost, - pub collection: Option<String>, - pub record: Option<String>, - pub fragment: Option<String>, -} - -impl FromStr for AtUri { - type Err = anyhow::Error; - - fn from_str(s: &str) -> Result<Self, Self::Err> { - lazy_static! { - static ref ATURI_RE: Regex = Regex::new(r"^at://([a-zA-Z0-9:_\.-]+)(/([a-zA-Z0-9\.]+))?(/([a-zA-Z0-9\.-]+))?(#([a-zA-Z0-9/-]+))?$").unwrap(); - } - if let Some(caps) = ATURI_RE.captures(s) { - let uri = AtUri { - repository: DidOrHost::from_str(&caps[1])?, - collection: caps.get(3).map(|v| v.as_str().to_string()), - record: caps.get(5).map(|v| v.as_str().to_string()), - fragment: caps.get(7).map(|v| v.as_str().to_string()), - }; - Ok(uri) - } else { - Err(anyhow!("couldn't parse as an at:// URI: {}", s)) - } - } -} - -impl fmt::Display for AtUri { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - write!(f, "at://{}", self.repository)?; - if let Some(ref c) = self.collection { - write!(f, "/{}", c)?; - }; - if let Some(ref r) = self.record { - write!(f, "/{}", r)?; - }; - if let Some(ref v) = self.fragment { - write!(f, "#{}", v)?; - }; - Ok(()) - } -} - -#[test] -fn test_aturi() { - assert!(AtUri::from_str("at://bob.com").is_ok()); - assert!(AtUri::from_str("at://did:plc:bv6ggog3tya2z3vxsub7hnal").is_ok()); - assert!(AtUri::from_str("at://bob.com/io.example.song").is_ok()); - assert!(AtUri::from_str("at://bob.com/io.example.song/3yI5-c1z-cc2p-1a").is_ok()); - assert!(AtUri::from_str("at://bob.com/io.example.song/3yI5-c1z-cc2p-1a#/title").is_ok()); - assert!( - AtUri::from_str("at://did:plc:ltk4reuh7rkoy2frnueetpb5/app.bsky.follow/3jg23pbmlhc2a") - .is_ok() - ); - - let uri = AtUri { - repository: DidOrHost::Did("some".to_string(), "thing".to_string()), - collection: Some("com.atproto.record".to_string()), - record: Some("asdf-123".to_string()), - fragment: Some("/path".to_string()), - }; - assert_eq!( - "at://did:some:thing/com.atproto.record/asdf-123#/path", - uri.to_string() - ); - println!("{:?}", AtUri::from_str(&uri.to_string())); - assert!(AtUri::from_str(&uri.to_string()).is_ok()); - - let uri = AtUri::from_str("at://bob.com/io.example.song/3yI5-c1z-cc2p-1a#/title").unwrap(); - assert_eq!(uri.repository, DidOrHost::Host("bob.com".to_string())); - assert_eq!(uri.collection, Some("io.example.song".to_string())); - assert_eq!(uri.record, Some("3yI5-c1z-cc2p-1a".to_string())); - assert_eq!(uri.fragment, Some("/title".to_string())); -} - -/// A String (newtype) representing an NSID -#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)] -pub struct Nsid(String); - -impl FromStr for Nsid { - type Err = anyhow::Error; - - fn from_str(s: &str) -> Result<Self, Self::Err> { - lazy_static! { - static ref NSID_RE: Regex = Regex::new(r"^([a-z][a-z0-9-]+\.)+[a-zA-Z0-9-]+$").unwrap(); - } - if NSID_RE.is_match(s) { - Ok(Self(s.to_string())) - } else { - Err(anyhow!("does not match as an NSID: {}", s)) - } - } -} - -impl Deref for Nsid { - type Target = str; - - fn deref(&self) -> &Self::Target { - &self.0 - } -} - -impl Nsid { - pub fn domain(&self) -> String { - self.rsplit('.').skip(1).collect::<Vec<&str>>().join(".") - } - - pub fn name(&self) -> String { - self.split('.') - .last() - .expect("multiple segments in NSID") - .to_string() - } -} - -impl fmt::Display for Nsid { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - write!(f, "{}", self.0) - } -} - -#[test] -fn test_nsid() { - assert!(Nsid::from_str("com.atproto.recordType").is_ok()); - - let nsid = Nsid::from_str("com.atproto.recordType").unwrap(); - assert_eq!(nsid.domain(), "atproto.com".to_string()); -} - -#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)] -pub struct Did(String); - -impl FromStr for Did { - type Err = anyhow::Error; - - /// DID syntax is specified in: <https://w3c.github.io/did-core/#did-syntax> - /// - /// This regex does not follow that definition exactly. - fn from_str(s: &str) -> Result<Self, Self::Err> { - lazy_static! { - static ref DID_RE: Regex = - Regex::new(r"^did:([a-z]{1,32}):([a-zA-Z0-9\-.]{1,256})$").unwrap(); - } - if DID_RE.is_match(s) { - Ok(Self(s.to_string())) - } else { - Err(anyhow!("does not match as a DID: {}", s)) - } - } -} - -impl Deref for Did { - type Target = str; - - fn deref(&self) -> &Self::Target { - &self.0 - } -} - -impl Did { - pub fn did_type(&self) -> String { - self.split(':').nth(1).unwrap().to_string() - } -} - -impl fmt::Display for Did { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - write!(f, "{}", self.0) - } -} - -#[test] -fn test_did() { - assert!(Did::from_str("did:web:asdf.org").is_ok()); - assert!(Did::from_str("did:plc:asdf").is_ok()); - - assert!(Did::from_str("bob.com").is_err()); - assert!(Did::from_str("").is_err()); - assert!(Did::from_str("did:").is_err()); - assert!(Did::from_str("did:plc:").is_err()); - assert!(Did::from_str("plc:asdf").is_err()); - assert!(Did::from_str("DID:thing:thang").is_err()); - - assert_eq!( - Did::from_str("did:web:asdf.org").unwrap().did_type(), - "web".to_string() - ); -} - -lazy_static! { - /// Sortable base32 encoding, as bluesky implements/defines - static ref BASE32SORT: data_encoding::Encoding = { - let mut spec = data_encoding::Specification::new(); - spec.symbols.push_str("234567abcdefghijklmnopqrstuvwxyz"); - spec.padding = None; - spec.encoding().unwrap() - }; -} - -/// A string identifier representing a UNIX time in miliseconds, plus a small counter -/// -/// Pretty permissive about what can be parsed/accepted, because there were some old TIDs floating -/// around with weird format. -#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)] -pub struct Tid(String); - -impl FromStr for Tid { - type Err = anyhow::Error; - - fn from_str(s: &str) -> Result<Self, Self::Err> { - lazy_static! { - static ref TID_RE: Regex = Regex::new(r"^[0-9a-zA-Z-]{13,20}$").unwrap(); - } - if TID_RE.is_match(s) { - Ok(Self(s.to_string())) - } else { - Err(anyhow!("does not match as a TID: {}", s)) - } - } -} - -impl Deref for Tid { - type Target = str; - - fn deref(&self) -> &Self::Target { - &self.0 - } -} - -impl fmt::Display for Tid { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - write!(f, "{}", self.0) - } -} - -impl Tid { - /// Bluesky does not specify, but assuming u64 math here - pub fn new(millis: u64, count: u64, clock_id: u8) -> Self { - let val = millis * 1000 + count; - Tid(format!( - "{}{}", - BASE32SORT.encode(&val.to_le_bytes()), - BASE32SORT.encode(&[clock_id]), - )) - } -} - -#[test] -fn test_tid() { - Tid::from_str("3yI5-c1z-cc2p-1a").unwrap(); - assert!(Tid::from_str("3jg6anbimrc2a").is_ok()); - assert!(Tid::from_str("3yI5-c1z-cc2p-1a").is_ok()); - - Tid::from_str("asdf234as4asdf234").unwrap(); - assert!(Tid::from_str("asdf234as4asdf234").is_ok()); - - assert!(Tid::from_str("").is_err()); - assert!(Tid::from_str("com").is_err()); - assert!(Tid::from_str("com.blah.Thing").is_err()); - assert!(Tid::from_str("did:stuff:blah").is_err()); -} - -pub struct TidLord { - last_timestamp: u64, - last_counter: u64, - clock_id: u8, -} - -impl TidLord { - pub fn new() -> Self { - let mut lord = Self { - last_timestamp: 0, - last_counter: 0, - // just 5 bits (?) - clock_id: rand::random::<u8>() & 0x1F, - }; - // prime the pump - lord.next_tid(); - lord - } - - pub fn next_tid(&mut self) -> Tid { - let now = SystemTime::now() - .duration_since(SystemTime::UNIX_EPOCH) - .unwrap() - .as_millis() as u64; - if now > self.last_timestamp { - self.last_timestamp = now; - self.last_counter = 0; - } else { - self.last_counter += 1; - } - Tid::new(self.last_timestamp, self.last_counter, self.clock_id) - } -} - -impl Default for TidLord { - fn default() -> Self { - Self::new() - } -} - -#[test] -fn test_tid_lord() { - let mut time_lord = TidLord::new(); - let mut prev = time_lord.next_tid(); - let mut next = time_lord.next_tid(); - for _ in [0..100] { - println!("{} >? {}", next, prev); - assert!(next > prev); - prev = next; - next = time_lord.next_tid(); - } - assert_eq!(prev, Tid::from_str(&prev.to_string()).unwrap()); - println!("{}", prev); -} |