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-rw-r--r--Cargo.lock362
-rw-r--r--Cargo.toml11
-rw-r--r--README.md19
-rw-r--r--notes/register.md22
-rw-r--r--notes/sleep.md37
-rw-r--r--src/bin/hello.rs3
-rw-r--r--src/lib.rs99
-rw-r--r--src/sleep.rs3
8 files changed, 556 insertions, 0 deletions
diff --git a/Cargo.lock b/Cargo.lock
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index 0000000..e18cf0a
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+ _
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+ / _` |/ _ \ '_ \| |_ / _` |
+ | (_| | __/ | | | |/ / (_| |
+ \__, |\___|_| |_|_/___\__,_|
+ |___/
+
+this is a very poor / partial / non-compliant dat implementation in rust.
+it will eat-your-data.
+
+SLEEP v2: Syncable Lightweight Event Emitting Persistence
+
+Libraries:
+- rust-crypto for blake2b and Ed25519
+- integer-encoding for varints
+- ??? for protobuf
+- ??? for Kademlia Mainline DHT
diff --git a/notes/register.md b/notes/register.md
new file mode 100644
index 0000000..f036543
--- /dev/null
+++ b/notes/register.md
@@ -0,0 +1,22 @@
+
+### SLEEP File Types
+
+ key
+ no header, raw bytes
+ tree
+ magic: 0x05025702
+ entry-size: 40 bytes
+ algorithm name: 'BLAKE2b' (len=7)
+ entry: 32-byte BLAKE2b node hash + 8-byte Uint64BE length
+ data
+ no header, raw bytes
+ signatures
+ magic: 0x05025701
+ entry-size: 65
+ algorithm name: 'Ed25519' (len=7)
+ entry: 64-byte Ed25519 signature
+ bitfield
+ magic: 0x05025700
+ entry-size: 3328
+ algorithm name: '' (len=0)
+ entry: 1024 bytes data, 2048 bytes tree, 256 bitfield
diff --git a/notes/sleep.md b/notes/sleep.md
new file mode 100644
index 0000000..d13a489
--- /dev/null
+++ b/notes/sleep.md
@@ -0,0 +1,37 @@
+
+### Binary Header
+
+Fixed 32-bytes
+
+ -----------------------------------------------------------------
+ | MAGIC |
+ -----------------------------------------------------------------
+ | VERSION (0) | ENTRY SIZE (uint16BE) | ALGO NAME LEN |
+ -----------------------------------------------------------------
+ | |
+ | |
+ | |
+ | ALGORITHM NAME (lower-case string) |
+ | |
+ | |
+ -----------------------------------------------------------------
+
+
+ PREFIX LEN is max 24 (bytes)
+
+ offset: 32 + entrySize * entryIndex
+ count: (fileSize - 32) / entrySize
+
+
+### SLEEP API
+
+ SleepStorage trait
+ SleepFile struct/impl
+
+ get_magic() -> u32
+ get_algorithm() -> &str
+ read(index) -> &bytes[]
+ write(index, &bytes[])
+ length() -> u64
+
+ First time around just do regular file seek() stuff
diff --git a/src/bin/hello.rs b/src/bin/hello.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/src/bin/hello.rs
@@ -0,0 +1,3 @@
+fn main() {
+ println!("Hello, world!");
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..63fd9bf
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,99 @@
+
+#[macro_use]
+extern crate error_chain;
+extern crate integer_encoding;
+
+use std::io::prelude::*;
+use std::path::Path;
+use std::fs::File;
+use integer_encoding::FixedInt;
+
+mod errors {
+ // Create the Error, ErrorKind, ResultExt, and Result types
+ error_chain! {
+ foreign_links { Fmt(::std::fmt::Error);
+ Io(::std::io::Error) #[cfg(unix)]; }
+ }
+}
+pub use errors::*;
+
+
+// Abstract access to SLEEP content
+pub trait SleepStorage {
+ fn get_magic(&self) -> u32;
+ fn get_algorithm(&self) -> Option<String>;
+ fn get_entry_size(&self) -> u16;
+ fn read(&self, index: u64) -> Result<&[u8]>;
+ fn write(&self, index: u64, data: &[u8]) -> Result<()>;
+ fn length(&self) -> Result<u64>;
+}
+
+#[derive(Debug)]
+pub struct SleepFile {
+ file: File,
+ magic: u32,
+ entry_size: u16,
+ algorithm_name: Option<String>,
+}
+
+impl SleepFile {
+
+ // TODO: 'from' File trait
+
+ pub fn open(path: &Path, writable: bool) -> Result<SleepFile> {
+
+ // TODO: use writable here
+ let mut f = File::open(path)?;
+ let mut header = [0; 32];
+ f.read_exact(&mut header)?;
+ let version: u8 = header[4];
+ if version != 0 {
+ return Err("Invalid SLEEP header: version must be 0".into());
+ }
+ let algo_len: u8 = header[8];
+ if algo_len > 24 {
+ return Err("Invalid SLEEP header: can't have algo_len > 24".into());
+ }
+ let algorithm_name = if algo_len == 0 { None } else {
+ Some(String::from_utf8_lossy(&header[8..(8+(algo_len as usize))]).into_owned())
+ };
+ // TODO: endian-ness of u16 entry_size
+ Ok(SleepFile {
+ file: f,
+ magic: FixedInt::decode_fixed(&header[0..4]),
+ entry_size: FixedInt::decode_fixed(&header[6..8]),
+ algorithm_name: algorithm_name,
+ })
+ }
+/*
+ pub fn create(path: Path, magic: u32, entry_size: u16, algo: &str) -> Result<SleepFile> {
+ let mut sf = SleepFile {
+
+ };
+ }
+*/
+}
+
+impl SleepStorage for SleepFile {
+
+ fn get_magic(&self) -> u32 { self.magic }
+ fn get_algorithm(&self) -> Option<String> { self.algorithm_name.clone() }
+ fn get_entry_size(&self) -> u16 { self.entry_size }
+
+ fn read(&self, index: u64) -> Result<&[u8]> {
+ unimplemented!()
+ //Err("unimplemented")
+ }
+
+ fn write(&self, index: u64, data: &[u8]) -> Result<()> {
+ Ok(())
+ }
+
+ fn length(&self) -> Result<u64> {
+ let length = self.file.metadata()?.len();
+ // TODO: assert that length >= 32
+ // TODO: assert that (length - 32) % self.entry_size == 0
+ return Ok((length - 32) / (self.entry_size as u64))
+ }
+
+}
diff --git a/src/sleep.rs b/src/sleep.rs
new file mode 100644
index 0000000..b28b04f
--- /dev/null
+++ b/src/sleep.rs
@@ -0,0 +1,3 @@
+
+
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 12:20:15 +0000