adding some starter code to the depell

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Jakub Doka 2024-10-05 23:07:33 +02:00
parent 4c15f61cb7
commit c7dbe1c43d
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6 changed files with 758 additions and 1143 deletions

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@ -548,70 +353,36 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "583034fd73374156e66797ed8e5b0d5690409c9226b22d87cb7f19821c05d152"
[[package]]
name = "rustversion"
version = "1.0.17"
name = "rustc_version"
version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
[[package]]
name = "ryu"
version = "1.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
[[package]]
name = "serde"
version = "1.0.210"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c8e3592472072e6e22e0a54d5904d9febf8508f65fb8552499a1abc7d1078c3a"
checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
dependencies = [
"serde_derive",
"semver",
]
[[package]]
name = "serde_derive"
version = "1.0.210"
name = "semver"
version = "1.0.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "243902eda00fad750862fc144cea25caca5e20d615af0a81bee94ca738f1df1f"
checksum = "61697e0a1c7e512e84a621326239844a24d8207b4669b41bc18b32ea5cbf988b"
[[package]]
name = "sha2"
version = "0.10.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
dependencies = [
"proc-macro2",
"quote",
"syn",
"cfg-if",
"cpufeatures",
"digest",
]
[[package]]
name = "serde_json"
version = "1.0.128"
name = "signature"
version = "2.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6ff5456707a1de34e7e37f2a6fd3d3f808c318259cbd01ab6377795054b483d8"
dependencies = [
"itoa",
"memchr",
"ryu",
"serde",
]
[[package]]
name = "serde_path_to_error"
version = "0.1.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "af99884400da37c88f5e9146b7f1fd0fbcae8f6eec4e9da38b67d05486f814a6"
dependencies = [
"itoa",
"serde",
]
[[package]]
name = "serde_urlencoded"
version = "0.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
dependencies = [
"form_urlencoded",
"itoa",
"ryu",
"serde",
]
checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
[[package]]
name = "smallvec"
@ -620,14 +391,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
[[package]]
name = "socket2"
version = "0.5.7"
name = "subtle"
version = "2.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce305eb0b4296696835b71df73eb912e0f1ffd2556a501fcede6e0c50349191c"
dependencies = [
"libc",
"windows-sys",
]
checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
[[package]]
name = "syn"
@ -641,90 +408,10 @@ dependencies = [
]
[[package]]
name = "sync_wrapper"
version = "0.1.2"
name = "typenum"
version = "1.17.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
[[package]]
name = "sync_wrapper"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a7065abeca94b6a8a577f9bd45aa0867a2238b74e8eb67cf10d492bc39351394"
[[package]]
name = "tokio"
version = "1.40.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e2b070231665d27ad9ec9b8df639893f46727666c6767db40317fbe920a5d998"
dependencies = [
"backtrace",
"libc",
"mio",
"pin-project-lite",
"socket2",
"tokio-macros",
"windows-sys",
]
[[package]]
name = "tokio-macros"
version = "2.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "693d596312e88961bc67d7f1f97af8a70227d9f90c31bba5806eec004978d752"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "tower"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2873938d487c3cfb9aed7546dc9f2711d867c9f90c46b889989a2cb84eba6b4f"
dependencies = [
"futures-core",
"futures-util",
"pin-project-lite",
"sync_wrapper 0.1.2",
"tokio",
"tower-layer",
"tower-service",
"tracing",
]
[[package]]
name = "tower-layer"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "121c2a6cda46980bb0fcd1647ffaf6cd3fc79a013de288782836f6df9c48780e"
[[package]]
name = "tower-service"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8df9b6e13f2d32c91b9bd719c00d1958837bc7dec474d94952798cc8e69eeec3"
[[package]]
name = "tracing"
version = "0.1.40"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
dependencies = [
"log",
"pin-project-lite",
"tracing-core",
]
[[package]]
name = "tracing-core"
version = "0.1.32"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
dependencies = [
"once_cell",
]
checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
[[package]]
name = "unicode-ident"
@ -733,10 +420,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e91b56cd4cadaeb79bbf1a5645f6b4f8dc5bde8834ad5894a8db35fda9efa1fe"
[[package]]
name = "vcpkg"
version = "0.2.15"
name = "universal-hash"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
checksum = "fc1de2c688dc15305988b563c3854064043356019f97a4b46276fe734c4f07ea"
dependencies = [
"crypto-common",
"subtle",
]
[[package]]
name = "version_check"
@ -751,98 +442,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
[[package]]
name = "windows-sys"
version = "0.52.0"
name = "x25519-dalek"
version = "2.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
checksum = "c7e468321c81fb07fa7f4c636c3972b9100f0346e5b6a9f2bd0603a52f7ed277"
dependencies = [
"windows-targets",
"curve25519-dalek",
"rand_core",
]
[[package]]
name = "windows-targets"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
dependencies = [
"windows_aarch64_gnullvm",
"windows_aarch64_msvc",
"windows_i686_gnu",
"windows_i686_gnullvm",
"windows_i686_msvc",
"windows_x86_64_gnu",
"windows_x86_64_gnullvm",
"windows_x86_64_msvc",
]
[[package]]
name = "windows_aarch64_gnullvm"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
[[package]]
name = "windows_aarch64_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
[[package]]
name = "windows_i686_gnu"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
[[package]]
name = "windows_i686_gnullvm"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
[[package]]
name = "windows_i686_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
[[package]]
name = "windows_x86_64_gnu"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
[[package]]
name = "windows_x86_64_gnullvm"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
[[package]]
name = "windows_x86_64_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
[[package]]
name = "xtask"
version = "0.1.0"
[[package]]
name = "zerocopy"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
dependencies = [
"zerocopy-derive",
]
[[package]]
name = "zerocopy-derive"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
dependencies = [
"proc-macro2",
"quote",
"syn",
]

View file

@ -1,6 +1,6 @@
[workspace]
resolver = "2"
members = ["hbbytecode", "hbvm", "hbxrt", "xtask", "hblang", "hbjit", "depell", "depell/html-macro"]
members = ["hbbytecode", "hbvm", "hbxrt", "xtask", "hblang", "hbjit", "depell"]
[profile.release]
lto = true

View file

@ -4,5 +4,8 @@ version = "0.1.0"
edition = "2021"
[dependencies]
axum = "0.7.7"
rusqlite = "0.32.1"
aes-gcm = { version = "0.10.3", default-features = false, features = ["aes", "rand_core"] }
ed25519-dalek = { version = "2.1.1", default-features = false, features = ["rand_core"] }
getrandom = "0.2.15"
rand_core = { version = "0.6.4", features = ["getrandom"] }
x25519-dalek = { version = "2.0.1", default-features = false }

View file

@ -1,7 +0,0 @@
[package]
name = "html-macro"
version = "0.1.0"
edition = "2021"
[lib]
proc-macro = true

View file

@ -1,530 +0,0 @@
#![feature(proc_macro_diagnostic)]
#![feature(proc_macro_def_site)]
use std::fmt::Write;
use std::str::FromStr;
macro_rules! diag {
($level:ident: $($tt:tt)*) => {diag!($level(proc_macro::Span::call_site()): $($tt)*)};
($level:ident[$span:expr]: $($tt:tt)*) => {diag!($level($span.span()): $($tt)*)};
($level:ident($span:expr): $($tt:tt)*) => {{
proc_macro::Diagnostic::spanned($span, proc_macro::Level::$level, format!($($tt)*)).emit();
}};
}
macro_rules! fatal_diag {
($($tt:tt)*) => {{
diag!($($tt)*);
return None;
}};
}
#[proc_macro]
pub fn html(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let mut trees = input.into_iter().peekable();
let mut st = State {
final_code: "Html({ let mut ___out = String::new(); ".to_string(),
write_target: "___out".to_string(),
error_handler: ".unwrap()",
..State::default()
};
if st.output_fmt(&mut trees).is_none() {
return proc_macro::TokenStream::default();
};
st.final_code.push_str("___out })");
if !st.tag_stack.is_empty() {
diag!(Error(proc_macro::Span::def_site()): "unclosed tags: {}", st.tag_stack);
}
proc_macro::TokenStream::from_str(&st.final_code).unwrap()
}
#[proc_macro]
pub fn write_html(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let mut trees = input.into_iter().peekable();
let mut st = State {
write_target: trees.next().expect("expected first token").to_string(),
error_handler: ".unwrap()",
..State::default()
};
if st.output_fmt(&mut trees).is_none() {
return proc_macro::TokenStream::default();
};
if !st.tag_stack.is_empty() {
diag!(Error(proc_macro::Span::def_site()): "unclosed tags: {}", st.tag_stack);
}
proc_macro::TokenStream::from_str(&st.final_code).unwrap()
}
type Trees = std::iter::Peekable<proc_macro::token_stream::IntoIter>;
#[derive(Default)]
struct State {
final_code: String,
template: String,
tstr: String,
tag_stack: String,
write_target: String,
no_escaping: bool,
error_handler: &'static str,
}
impl State {
fn flush_template(&mut self) {
if self.template.is_empty() {
return;
}
write!(
self.final_code,
"write!({}, {:?}){};",
self.write_target, self.template, self.error_handler
)
.unwrap();
self.template.clear();
}
fn display_expr(&mut self, expr: impl std::fmt::Display) {
self.flush_template();
if std::mem::take(&mut self.no_escaping) {
write!(
self.final_code,
"write!({}, \"{{}}\", {expr}){};",
self.write_target, self.error_handler
)
.unwrap();
} else {
write!(
self.final_code,
"write!({}, \"{{}}\", &HtmlEscaped(&{expr})){};",
self.write_target, self.error_handler,
)
.unwrap()
}
}
fn expect_group(
&mut self,
trees: &mut Trees,
delim: proc_macro::Delimiter,
) -> Option<proc_macro::TokenStream> {
match trees.next() {
Some(proc_macro::TokenTree::Group(g)) if g.delimiter() == delim => Some(g.stream()),
Some(c) => fatal_diag!(Error[c]: "expected {delim:?} group"),
None => fatal_diag!(Error: "expected {delim:?} group, got eof"),
}
}
fn expect_punct(&mut self, trees: &mut Trees, c: char) -> Option<()> {
match trees.next() {
Some(proc_macro::TokenTree::Punct(p)) if p.as_char() == c => Some(()),
Some(c) => fatal_diag!(Error[c]: "expected {c}"),
None => fatal_diag!(Error: "expected {c}, got eof"),
}
}
fn tag(&mut self, p: proc_macro::Punct, trees: &mut Trees) -> Option<()> {
let temp = match trees.next() {
Some(proc_macro::TokenTree::Ident(id)) => {
let temp = temp_str(&id, &mut self.tstr);
if !is_html_tag(temp) {
diag!(Error[p]: "expected html5 tag name");
}
temp
}
Some(proc_macro::TokenTree::Literal(lit)) => {
let temp = temp_str(&lit, &mut self.tstr).trim_matches('"');
if is_html_tag(temp) {
if !temp.contains('!') {
diag!(Warning[p]: "unnescessary string escaping");
}
} else if !is_valid_webcomponent(temp) {
diag!(Error[p]: "invalid web component identifier");
}
temp
}
Some(proc_macro::TokenTree::Punct(p)) if p.as_char() == '/' => {
let Some((_, top)) = self.tag_stack.rsplit_once(',') else {
fatal_diag!(Error[p]: "no tag to close");
};
let new_tag_stack_len = self.tag_stack.len() - top.len() - 1;
let (temp, span) = match trees.next() {
Some(proc_macro::TokenTree::Ident(id)) => {
(temp_str(&id, &mut self.tstr), id.span())
}
Some(proc_macro::TokenTree::Literal(lit)) => {
(temp_str(&lit, &mut self.tstr).trim_matches('"'), lit.span())
}
Some(proc_macro::TokenTree::Punct(p)) if p.as_char() == '>' => {
// easter egg
write!(&mut self.template, "</{top}>").unwrap();
self.tag_stack.truncate(new_tag_stack_len);
return Some(());
}
Some(c) => fatal_diag!(Error[c]: "unexpected token in closing tag"),
None => {
fatal_diag!(Error[p]: "expected tag ident or string or '>'")
}
};
if temp != top {
diag!(Error(span): "expected closing '{top}' tag");
}
write!(&mut self.template, "</{top}>").unwrap();
self.expect_punct(trees, '>')?;
self.tag_stack.truncate(new_tag_stack_len);
return Some(());
}
_ => fatal_diag!(Error[p]: "expected tag ident or string literal"),
};
write!(&mut self.template, "<{temp}").unwrap();
if !is_self_closing(temp) {
write!(self.tag_stack, ",{temp}").unwrap();
}
let mut has_attr = false;
while let Some(c) = trees.next() {
let mut has_attr_tmp = false;
match c {
proc_macro::TokenTree::Punct(p) if p.as_char() == '=' && has_attr => loop {
match trees.next() {
Some(proc_macro::TokenTree::Punct(p)) if p.as_char() == '!' => {
self.no_escaping = true;
continue;
}
Some(proc_macro::TokenTree::Literal(lit)) => {
write!(&mut self.template, "={lit}").unwrap();
}
Some(proc_macro::TokenTree::Ident(id)) => {
write!(&mut self.template, "=\"").unwrap();
self.display_expr(id);
write!(&mut self.template, "\"").unwrap();
}
Some(proc_macro::TokenTree::Group(g))
if g.delimiter() == proc_macro::Delimiter::Brace =>
{
write!(&mut self.template, "=\"").unwrap();
self.display_expr(g.stream());
write!(&mut self.template, "\"").unwrap();
}
Some(c) => {
diag!(Error[c]: "unexpected token in attr value")
}
None => diag!(Error[p]: "expected attribute value"),
}
break;
},
proc_macro::TokenTree::Punct(p) if p.as_char() == '>' => {
write!(&mut self.template, ">").unwrap();
break;
}
proc_macro::TokenTree::Ident(id) => {
write!(&mut self.template, " {id}").unwrap();
has_attr_tmp = true;
}
proc_macro::TokenTree::Literal(lit) => {
let temp = temp_str(&lit, &mut self.tstr).trim_matches('"');
if !is_valid_html_attt_name(temp) {
diag!(Error[p]: "invalid attribute name");
}
write!(&mut self.template, " {temp}").unwrap();
has_attr_tmp = true;
}
c => diag!(Error[c]: "unexpected token in attribute list"),
}
has_attr = has_attr_tmp;
}
Some(())
}
fn matches_char(t: &proc_macro::TokenTree, ch: char, spacing: proc_macro::Spacing) -> bool {
matches!(t, proc_macro::TokenTree::Punct(p) if p.as_char() == ch && p.spacing() == spacing)
}
fn match_expr(&mut self, trees: &mut Trees) -> Option<()> {
let expr = self.expect_group(trees, proc_macro::Delimiter::Parenthesis)?;
let mut body = self
.expect_group(trees, proc_macro::Delimiter::Brace)?
.into_iter()
.peekable();
self.flush_template();
write!(&mut self.final_code, "match {expr} {{").unwrap();
loop {
let mut pattern = proc_macro::TokenStream::new();
let mut looped = false;
while let Some(c) = body.next() {
if !Self::matches_char(&c, '=', proc_macro::Spacing::Joint) {
pattern.extend([c]);
looped = true;
continue;
}
let nc = body.next().expect("haaaaa");
if Self::matches_char(&nc, '>', proc_macro::Spacing::Alone) {
break;
}
pattern.extend([c, nc]);
looped = true;
}
if !looped {
break;
}
let body = self.expect_group(&mut body, proc_macro::Delimiter::Brace)?;
write!(&mut self.final_code, "{pattern} => {{").unwrap();
self.output_fmt(&mut body.into_iter().peekable())?;
write!(&mut self.final_code, "}}").unwrap();
}
write!(&mut self.final_code, "}}").unwrap();
Some(())
}
fn for_expr(&mut self, trees: &mut Trees) -> Option<()> {
let mut ink = proc_macro::Span::call_site();
let loop_var = trees
.by_ref()
.take_while(|t| {
ink = t.span();
!matches!(t, proc_macro::TokenTree::Ident(id) if temp_str(id, &mut self.tstr) == "in")
})
.collect::<proc_macro::TokenStream>();
let iter = self.expect_group(trees, proc_macro::Delimiter::Parenthesis)?;
let body = self.expect_group(trees, proc_macro::Delimiter::Brace)?;
let else_body = match trees.peek() {
Some(proc_macro::TokenTree::Ident(id)) if temp_str(id, &mut self.tstr) == "else" => {
trees.next();
self.expect_group(trees, proc_macro::Delimiter::Brace)?
}
_ => proc_macro::TokenStream::new(),
};
self.tstr.clear();
self.flush_template();
if else_body.is_empty() {
write!(&mut self.final_code, "for {loop_var} in {iter} {{").unwrap();
} else {
write!(
&mut self.final_code,
"let mut looped = false;\
for {loop_var} in {iter} {{\
looped = true;"
)
.unwrap();
}
self.output_fmt(&mut body.into_iter().peekable())?;
write!(&mut self.final_code, "}}").unwrap();
if !else_body.is_empty() {
write!(&mut self.final_code, "if !looped {{").unwrap();
self.output_fmt(&mut else_body.into_iter().peekable())?;
write!(&mut self.final_code, "}}").unwrap();
}
Some(())
}
fn output_fmt(&mut self, trees: &mut Trees) -> Option<()> {
while let Some(c) = trees.next() {
match c {
proc_macro::TokenTree::Punct(p) if p.as_char() == '!' => self.no_escaping = true,
proc_macro::TokenTree::Punct(p) if p.as_char() == '<' => self.tag(p, trees)?,
proc_macro::TokenTree::Literal(lit) => self
.template
.push_str(temp_str(&lit, &mut self.tstr).trim_matches('"')),
proc_macro::TokenTree::Ident(id) => match temp_str(&id, &mut self.tstr) {
"match" => self.match_expr(trees)?,
"for" => self.for_expr(trees)?,
_ => self.display_expr(id),
},
proc_macro::TokenTree::Group(g)
if g.delimiter() == proc_macro::Delimiter::Brace =>
{
self.display_expr(g.stream());
}
c => fatal_diag!(Error[c]: "unexpected token"),
}
}
self.flush_template();
Some(())
}
}
fn temp_str(i: impl std::fmt::Display, buf: &mut String) -> &str {
buf.clear();
write!(buf, "{i}").unwrap();
buf
}
fn is_valid_html_attt_name(tag: &str) -> bool {
tag.bytes()
.all(|c| matches!(c, b'a'..=b'z' | b'_' | b'-' | b'A'..=b'Z' | 128..=u8::MAX))
}
fn is_valid_webcomponent(tag: &str) -> bool {
let mut seen_dash = false;
tag.bytes()
.inspect(|c| seen_dash |= *c == b'-')
.all(|c| matches!(c, b'a'..=b'z' | b'_' | b'-' | b'.' | 128..=u8::MAX))
&& seen_dash
}
fn is_html_tag(tag: &str) -> bool {
matches!(
tag,
"!DOCTYPE"
| "a"
| "abbr"
| "acronym"
| "address"
| "area"
| "article"
| "aside"
| "audio"
| "b"
| "base"
| "basefont"
| "bdi"
| "bdo"
| "big"
| "blockquote"
| "body"
| "br"
| "button"
| "canvas"
| "caption"
| "center"
| "cite"
| "code"
| "col"
| "colgroup"
| "data"
| "datalist"
| "dd"
| "del"
| "details"
| "dfn"
| "dialog"
| "div"
| "dl"
| "dt"
| "em"
| "embed"
| "fieldset"
| "figcaption"
| "figure"
| "footer"
| "form"
| "h1"
| "h2"
| "h3"
| "h4"
| "h5"
| "h6"
| "head"
| "header"
| "hr"
| "html"
| "i"
| "iframe"
| "img"
| "input"
| "ins"
| "kbd"
| "label"
| "legend"
| "li"
| "link"
| "main"
| "map"
| "mark"
| "meta"
| "meter"
| "nav"
| "noscript"
| "object"
| "ol"
| "optgroup"
| "option"
| "output"
| "p"
| "param"
| "picture"
| "pre"
| "progress"
| "q"
| "rp"
| "rt"
| "ruby"
| "s"
| "samp"
| "script"
| "section"
| "select"
| "small"
| "source"
| "span"
| "strong"
| "style"
| "sub"
| "summary"
| "sup"
| "svg"
| "table"
| "tbody"
| "td"
| "template"
| "textarea"
| "tfoot"
| "th"
| "thead"
| "time"
| "title"
| "tr"
| "track"
| "u"
| "ul"
| "var"
| "video"
| "wbr"
)
}
fn is_self_closing(tag: &str) -> bool {
matches!(
tag,
"!DOCTYPE"
| "area"
| "base"
| "br"
| "col"
| "embed"
| "hr"
| "img"
| "input"
| "link"
| "meta"
| "param"
| "source"
| "track"
| "wbr"
)
}

View file

@ -1,3 +1,544 @@
fn main() {
println!("Hello, world!");
#![feature(array_windows)]
#![feature(write_all_vectored)]
use {
aes_gcm::{
aead::{self, AeadMutInPlace},
AeadCore, Aes256Gcm, KeyInit,
},
ed25519_dalek::ed25519::signature::Signer,
rand_core::OsRng,
std::{
collections::{HashMap, HashSet},
fmt, fs,
io::{self, IoSlice, IoSliceMut, Read, Write},
mem::{self, MaybeUninit},
net::{Ipv4Addr, SocketAddrV4, TcpListener, TcpStream},
path::PathBuf,
slice,
str::FromStr,
sync::{atomic, OnceLock},
time,
},
x25519_dalek::{EphemeralSecret, SharedSecret},
};
static CONN_COUNT: atomic::AtomicUsize = atomic::AtomicUsize::new(0);
static USER_DATA_DIR: OnceLock<PathBuf> = OnceLock::new();
static SERVER_SECRET: OnceLock<ed25519_dalek::SigningKey> = OnceLock::new();
#[derive(Default)]
struct Cli {
program: String,
args: Vec<String>,
flags: HashSet<String>,
options: HashMap<String, String>,
}
impl Cli {
pub fn parse() -> Self {
let mut s = Self::default();
let mut args = std::env::args();
s.program = args.next().unwrap();
for arg in args {
if let Some(arg) = arg.strip_prefix("--") {
match arg.split_once('=') {
Some((name, value)) => _ = s.options.insert(name.to_owned(), value.to_owned()),
None => _ = s.flags.insert(arg.to_string()),
}
} else {
s.args.push(arg);
}
}
s
}
pub fn arg(&self, index: usize) -> &str {
self.args.get(index).map_or("", String::as_str)
}
pub fn expect_option(&self, name: &str) -> &str {
self.options.get(name).unwrap_or_else(|| panic!("--{name} is mandatory"))
}
pub fn expect_poption<T: FromStr<Err: fmt::Display>>(&self, name: &str) -> T {
self.expect_option(name).parse::<T>().unwrap_or_else(|e| {
panic!("failed to parse --{name} as {}: {e}", std::any::type_name::<T>())
})
}
}
type Subcommand<'a> = (&'a str, &'a str, fn(&Cli) -> io::Result<()>);
fn help<T>(subs: &[(&str, &str, T)]) -> io::Result<()> {
for (name, desc, _) in subs {
eprintln!("{name} - {desc}");
}
Err(io::ErrorKind::NotFound.into())
}
const SUBCOMMANDS: &[Subcommand] = &[
("help", "print command descriptions", |_| help(SUBCOMMANDS)),
("serve", "run the server", |cli| {
let port = cli.expect_poption::<u16>("port");
let max_conns = cli.expect_poption::<usize>("max-conns");
USER_DATA_DIR.set(cli.expect_poption("user-data-path")).unwrap();
SERVER_SECRET.set(cli.expect_poption::<HexSk>("secret").0).unwrap();
let listener = TcpListener::bind((Ipv4Addr::UNSPECIFIED, port)).unwrap();
for incoming in listener.incoming() {
match incoming {
Ok(c) => {
if CONN_COUNT.fetch_add(1, atomic::Ordering::Relaxed) >= max_conns {
CONN_COUNT.fetch_sub(1, atomic::Ordering::Relaxed);
continue;
}
std::thread::spawn(move || {
_ = handle_client(c);
CONN_COUNT.fetch_sub(1, atomic::Ordering::Relaxed);
});
}
Err(e) => {
eprintln!("accepting conn conn: {e}")
}
}
}
Ok(())
}),
("make-profile", "create profile file (private key + name)", |cli| {
let name = cli.expect_option("name");
let name = str_as_username(name)
.ok_or(io::ErrorKind::InvalidData)
.ctx("name is limmited to 32 characters")?;
let &key = ed25519_dalek::SigningKey::generate(&mut rand_core::OsRng).as_bytes();
let profile = UserProfile { name, key };
let out_file = cli.expect_option("out-file");
_ = fs::write(out_file, as_bytes(&profile)).ctx("while saving profile file");
Ok(())
}),
("consume", "connect to server and do an action", |cli| {
let profile_path = cli.expect_option("profile");
let mut profile_file = fs::File::open(profile_path).ctx("opening profile file")?;
let profile: UserProfile = read_struct(&mut profile_file).ctx("reading the profile")?;
let sx = x25519_dalek::EphemeralSecret::random_from_rng(OsRng);
let auth = UserAuth::sign(profile, &sx);
let addr = cli.expect_poption::<SocketAddrV4>("addr");
let mut stream = TcpStream::connect(addr).ctx("creating connection to the server")?;
write_struct(&mut stream, &auth).ctx("sending initial handshake packet")?;
let HexPk(server_identity) = cli.expect_poption("server-identity");
let sauth: ServerAuth = read_struct(&mut stream).ctx("reading server auth")?;
let secret = sauth
.verify(auth.pk, server_identity, sx)
.map_err(|_| io::ErrorKind::PermissionDenied)
.ctx("authenticating server")?;
let stream = EncriptedStream::new(stream, secret);
select_subcommand(1, CONSUME_SUBCOMMAND, cli)(cli, stream)
}),
];
type ConsumeSubcommand<'a> = (&'a str, &'a str, fn(&Cli, EncriptedStream) -> io::Result<()>);
const CONSUME_SUBCOMMAND: &[ConsumeSubcommand] = &[
("help", "this help message", |_, _| help(CONSUME_SUBCOMMAND)),
("ping", "ping the server to check the connection", |_, mut stream| {
write_struct(&mut stream, &Qid::Ping)
}), //
];
fn hex_to_array<const SIZE: usize>(s: &str) -> Result<[u8; SIZE], &'static str> {
let mut buf = [0u8; SIZE];
if s.len() != SIZE * 2 {
return Err("expected 64 character hex string");
}
fn byte_to_hex(val: u8) -> Result<u8, &'static str> {
Ok(match val {
b'0'..=b'9' => val - b'0',
b'a'..=b'f' => val - b'a' + 10,
b'A'..=b'F' => val - b'A' + 10,
_ => return Err("invalid hex char"),
})
}
for (dst, &[a, b]) in buf.iter_mut().zip(s.as_bytes().array_windows()) {
*dst = byte_to_hex(a)? | (byte_to_hex(b)? << 4);
}
Ok(buf)
}
struct HexPk(ed25519_dalek::VerifyingKey);
impl std::str::FromStr for HexPk {
type Err = &'static str;
fn from_str(s: &str) -> Result<Self, Self::Err> {
ed25519_dalek::VerifyingKey::from_bytes(&hex_to_array(s)?)
.map_err(|_| "hex code does not represent the valid key")
.map(Self)
}
}
struct HexSk(ed25519_dalek::SigningKey);
impl std::str::FromStr for HexSk {
type Err = &'static str;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(Self(ed25519_dalek::SigningKey::from_bytes(&hex_to_array(s)?)))
}
}
fn select_subcommand<'a, T>(depth: usize, list: &'a [(&str, &str, T)], cli: &Cli) -> &'a T {
&list.iter().find(|&&(name, ..)| name == cli.arg(depth)).unwrap_or(&list[0]).2
}
fn main() -> io::Result<()> {
let cli = Cli::parse();
select_subcommand(0, SUBCOMMANDS, &cli)(&cli)
}
fn handle_client(mut stream: TcpStream) -> io::Result<()> {
let (user, sec) = {
let user_auth: UserAuth = read_struct(&mut stream).ctx("reading auth packet")?;
let sx = x25519_dalek::EphemeralSecret::random_from_rng(OsRng);
let pk = x25519_dalek::PublicKey::from(&sx);
let user = UserData::load(&user_auth, sx).ctx("loading user data")?;
let sauth = ServerAuth::sign(&user_auth, SERVER_SECRET.get().unwrap(), pk);
write_struct(&mut stream, &sauth).ctx("sending handshare response")?;
user
};
let mut stream = EncriptedStream::new(stream, sec);
loop {
match Qid::try_from(read_struct::<u16>(&mut stream)?)? {
Qid::Ping => write_struct(&mut stream, &Aid::Pong)?,
}
}
}
#[repr(u16)]
enum Aid {
Pong,
}
#[repr(u16)]
enum Qid {
Ping,
}
impl TryFrom<u16> for Qid {
type Error = io::ErrorKind;
fn try_from(value: u16) -> Result<Self, Self::Error> {
if value <= Self::Ping as u16 {
Ok(unsafe { mem::transmute::<u16, Qid>(value) })
} else {
Err(io::ErrorKind::NotFound)
}
}
}
trait Ctx {
fn ctx(self, label: &str) -> Self;
}
impl<O, E: fmt::Display> Ctx for Result<O, E> {
fn ctx(self, label: &str) -> Self {
if let Err(e) = &self {
eprintln!("{label}: {e}")
}
self
}
}
const ASOC_DATA: &[u8] = b"testicle torsion vizard";
struct EncriptedStream {
inner: TcpStream,
key: SharedSecret,
buf: Vec<u8>,
}
impl EncriptedStream {
fn new(inner: TcpStream, key: SharedSecret) -> Self {
Self { inner, key, buf: Default::default() }
}
}
impl Read for EncriptedStream {
fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
let mut tag = MaybeUninit::<aead::Tag<Aes256Gcm>>::uninit();
let mut nonce = MaybeUninit::<aead::Nonce<Aes256Gcm>>::uninit();
let mut bufs = &mut [
IoSliceMut::new(as_mut_bytes(&mut tag)),
IoSliceMut::new(as_mut_bytes(&mut nonce)),
IoSliceMut::new(buf),
][..];
loop {
let red = self.inner.read_vectored(bufs)?;
if red == 0 {
return Err(io::ErrorKind::UnexpectedEof.into());
}
IoSliceMut::advance_slices(&mut bufs, red);
if bufs.is_empty() {
break;
}
}
unsafe {
Aes256Gcm::new(self.key.as_bytes().into())
.decrypt_in_place_detached(&nonce.assume_init(), ASOC_DATA, buf, &tag.assume_init())
.map_err(|_| io::ErrorKind::PermissionDenied)?;
}
Ok(())
}
fn read(&mut self, _: &mut [u8]) -> io::Result<usize> {
unimplemented!()
}
}
impl Write for EncriptedStream {
fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
self.buf.clear();
self.buf.extend(buf);
let nonce = Aes256Gcm::generate_nonce(OsRng);
let tag = Aes256Gcm::new(self.key.as_bytes().into())
.encrypt_in_place_detached(&nonce, ASOC_DATA, &mut self.buf)
.unwrap();
self.inner.write_all_vectored(&mut [
IoSlice::new(as_bytes(&tag)),
IoSlice::new(as_bytes(&nonce)),
IoSlice::new(&self.buf),
])
}
fn flush(&mut self) -> io::Result<()> {
self.inner.flush()
}
fn write(&mut self, _: &[u8]) -> io::Result<usize> {
unimplemented!()
}
}
fn read_struct<T>(stream: &mut impl Read) -> io::Result<T> {
let mut res = mem::MaybeUninit::uninit();
stream.read_exact(as_mut_bytes(&mut res))?;
unsafe { res.assume_init() }
}
fn write_struct<T>(stream: &mut impl Write, value: &T) -> io::Result<()> {
stream.write_all(as_bytes(value))
}
fn as_mut_bytes<T>(value: &mut T) -> &mut [u8] {
unsafe { slice::from_raw_parts_mut(value as *mut _ as *mut u8, mem::size_of::<T>()) }
}
fn as_bytes<T>(value: &T) -> &[u8] {
unsafe { slice::from_raw_parts(value as *const _ as *const u8, mem::size_of::<T>()) }
}
type Username = [u8; 32];
type Postname = [u8; 64];
type Pk = [u8; 32];
type Nonce = u64;
fn username_as_str(name: &Username) -> Option<&str> {
let len = name.iter().rposition(|&b| b != 0xff)? + 1;
std::str::from_utf8(&name[..len]).ok()
}
fn str_as_username(name: &str) -> Option<Username> {
if name.len() > mem::size_of::<Username>() {
return None;
}
let mut buff = [0xffu8; mem::size_of::<Username>()];
buff[..name.len()].copy_from_slice(name.as_bytes());
Some(buff)
}
#[repr(packed)]
struct UserProfile {
name: Username,
key: ed25519_dalek::SecretKey,
}
#[repr(packed)]
struct UserAuth {
signature: ed25519_dalek::Signature,
pk: Pk,
x: x25519_dalek::PublicKey,
name: Username,
nonce: Nonce,
}
impl UserAuth {
fn sign(UserProfile { name, key }: UserProfile, sx: &x25519_dalek::EphemeralSecret) -> Self {
let nonce =
time::SystemTime::now().duration_since(time::SystemTime::UNIX_EPOCH).unwrap().as_secs();
let mut message = [0; mem::size_of::<Username>() + mem::size_of::<u64>()];
message[..mem::size_of::<Username>()].copy_from_slice(&name);
message[mem::size_of::<Username>()..].copy_from_slice(&nonce.to_le_bytes());
let signing_key = ed25519_dalek::SigningKey::from_bytes(&key);
let signature = signing_key.sign(&message);
let pk = ed25519_dalek::VerifyingKey::from(&signing_key).to_bytes();
let x = x25519_dalek::PublicKey::from(sx);
Self { signature, pk, x, name, nonce }
}
fn verify(
&self,
pk: Pk,
nonce: Nonce,
sx: x25519_dalek::EphemeralSecret,
) -> Result<SharedSecret, ed25519_dalek::SignatureError> {
if nonce >= self.nonce {
eprintln!("invalid auth nonce");
return Err(ed25519_dalek::SignatureError::default());
}
let pk = ed25519_dalek::VerifyingKey::from_bytes(&pk)?;
let mut message = [0; mem::size_of::<Username>() + mem::size_of::<u64>()];
message[..mem::size_of::<Username>()].copy_from_slice(&self.name);
message[mem::size_of::<Username>()..].copy_from_slice(&nonce.to_le_bytes());
pk.verify_strict(&message, &self.signature)?;
Ok(sx.diffie_hellman(&self.x))
}
}
#[repr(packed)]
struct ServerAuth {
signature: ed25519_dalek::Signature,
x: x25519_dalek::PublicKey,
}
impl ServerAuth {
fn sign(
user_auth: &UserAuth,
sk: &ed25519_dalek::SigningKey,
x: x25519_dalek::PublicKey,
) -> Self {
let signature = sk.sign(user_auth.x.as_bytes());
Self { signature, x }
}
fn verify(
&self,
x: Pk,
pk: ed25519_dalek::VerifyingKey,
sx: EphemeralSecret,
) -> Result<SharedSecret, ed25519_dalek::SignatureError> {
pk.verify_strict(&x, &self.signature)?;
Ok(sx.diffie_hellman(&self.x))
}
}
struct UserData {
header: UserHeader,
post_headers: fs::File,
posts: fs::File,
}
impl UserData {
fn load(
auth: &UserAuth,
sx: x25519_dalek::EphemeralSecret,
) -> io::Result<(Self, SharedSecret)> {
const HEADER_PATH: &str = "header.bin";
const POST_HEADERS_PATH: &str = "post-headers.bin";
const POST_PATH: &str = "posts.bin";
let mut path = PathBuf::from_iter([
USER_DATA_DIR.get().unwrap().as_path(),
username_as_str(&auth.name).ok_or(io::ErrorKind::InvalidData)?.as_ref(),
]);
if path.exists() {
path.push(HEADER_PATH);
let mut header_file = fs::File::open(&path).ctx("opening user header file")?;
let mut header: UserHeader =
read_struct(&mut header_file).ctx("reading the user header")?;
path.pop();
let secret = auth
.verify(header.pk, header.nonce, sx)
.map_err(|_| io::ErrorKind::PermissionDenied)
.ctx("authenticating user")?;
header.nonce = auth.nonce;
write_struct(&mut header_file, &header).ctx("saving user nonce")?;
path.push(POST_HEADERS_PATH);
let post_headers = fs::File::open(&path).ctx("opening user post header file")?;
path.pop();
path.push(POST_PATH);
let posts = fs::File::open(&path).ctx("opening user post file")?;
path.pop();
Ok((Self { header, post_headers, posts }, secret))
} else {
let secret = auth
.verify(auth.pk, 0, sx)
.map_err(|_| io::ErrorKind::PermissionDenied)
.ctx("verifiing registratio signature")?;
fs::create_dir_all(&path).ctx("creating new user directory")?;
path.push(HEADER_PATH);
let header =
UserHeader { pk: auth.pk, nonce: auth.nonce, post_count: 0, runs: 0, imports: 0 };
fs::write(&path, as_bytes(&header)).ctx("writing new user header")?;
path.pop();
path.push(POST_HEADERS_PATH);
let post_headers = fs::File::create_new(&path).ctx("creating new user post headers")?;
path.pop();
path.push(POST_PATH);
let posts = fs::File::create_new(&path).ctx("creating new user posts")?;
path.pop();
Ok((Self { header, post_headers, posts }, secret))
}
}
}
#[repr(packed)]
struct UserHeader {
pk: Pk,
nonce: Nonce,
post_count: u32,
imports: u32,
runs: u32,
}
#[repr(packed)]
struct PostHeader {
name: Postname,
timestamp: u64,
size: u32,
offset: u32,
imports: u32,
runs: u32,
}