1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
use bstr::ByteSlice;
use std::path::Path;
use tracing::{debug, instrument};
use tvix_castore::{
blobservice::BlobService, directoryservice::DirectoryService, import::fs::ingest_path, Node,
};
use nix_compat::{
nixhash::{CAHash, NixHash},
store_path::{self, StorePath},
};
use crate::{
nar::NarCalculationService,
pathinfoservice::{PathInfo, PathInfoService},
proto::nar_info,
};
impl From<CAHash> for nar_info::Ca {
fn from(value: CAHash) -> Self {
let hash_type: nar_info::ca::Hash = (&value).into();
let digest: bytes::Bytes = value.hash().to_string().into();
nar_info::Ca {
r#type: hash_type.into(),
digest,
}
}
}
pub fn log_node(name: &[u8], node: &Node, path: &Path) {
match node {
Node::Directory { digest, .. } => {
debug!(
path = ?path,
name = %name.as_bstr(),
digest = %digest,
"import successful",
)
}
Node::File { digest, .. } => {
debug!(
path = ?path,
name = %name.as_bstr(),
digest = %digest,
"import successful"
)
}
Node::Symlink { target } => {
debug!(
path = ?path,
name = %name.as_bstr(),
target = ?target,
"import successful"
)
}
}
}
/// Transform a path into its base name and returns an [`std::io::Error`] if it is `..` or if the
/// basename is not valid unicode.
#[inline]
pub fn path_to_name(path: &Path) -> std::io::Result<&str> {
path.file_name()
.and_then(|file_name| file_name.to_str())
.ok_or_else(|| {
std::io::Error::new(
std::io::ErrorKind::InvalidInput,
"path must not be .. and the basename valid unicode",
)
})
}
/// Ingest the contents at the given path `path` into castore, and registers the
/// resulting root node in the passed PathInfoService, using the "NAR sha256
/// digest" and the passed name for output path calculation.
/// Inserts the PathInfo into the PathInfoService and returns it back to the caller.
#[instrument(skip_all, fields(store_name=name, path=?path), err)]
pub async fn import_path_as_nar_ca<BS, DS, PS, NS, P>(
path: P,
name: &str,
blob_service: BS,
directory_service: DS,
path_info_service: PS,
nar_calculation_service: NS,
) -> Result<PathInfo, std::io::Error>
where
P: AsRef<Path> + std::fmt::Debug,
BS: BlobService + Clone,
DS: DirectoryService,
PS: AsRef<dyn PathInfoService>,
NS: NarCalculationService,
{
// Ingest the contents at the given path `path` into castore.
let root_node =
ingest_path::<_, _, _, &[u8]>(blob_service, directory_service, path.as_ref(), None)
.await
.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
// Ask for the NAR size and sha256
let (nar_size, nar_sha256) = nar_calculation_service.calculate_nar(&root_node).await?;
let ca = CAHash::Nar(NixHash::Sha256(nar_sha256));
// Calculate the output path. This might still fail, as some names are illegal.
// FUTUREWORK: express the `name` at the type level to be valid and move the conversion
// at the caller level.
let output_path: StorePath<String> =
store_path::build_ca_path(name, &ca, std::iter::empty::<&str>(), false).map_err(|_| {
std::io::Error::new(
std::io::ErrorKind::InvalidData,
format!("invalid name: {}", name),
)
})?;
// Insert a PathInfo. On success, return it back to the caller.
Ok(path_info_service
.as_ref()
.put(PathInfo {
store_path: output_path.to_owned(),
node: root_node,
// There's no reference scanning on imported paths
references: vec![],
nar_size,
nar_sha256,
signatures: vec![],
deriver: None,
ca: Some(ca),
})
.await?)
}
#[cfg(test)]
mod tests {
use std::{ffi::OsStr, path::PathBuf};
use crate::import::path_to_name;
use rstest::rstest;
#[rstest]
#[case::simple_path("a/b/c", "c")]
#[case::simple_path_containing_dotdot("a/b/../c", "c")]
#[case::path_containing_multiple_dotdot("a/b/../c/d/../e", "e")]
fn test_path_to_name(#[case] path: &str, #[case] expected_name: &str) {
let path: PathBuf = path.into();
assert_eq!(path_to_name(&path).expect("must succeed"), expected_name);
}
#[rstest]
#[case::path_ending_in_dotdot(b"a/b/..")]
#[case::non_unicode_path(b"\xf8\xa1\xa1\xa1\xa1")]
fn test_invalid_path_to_name(#[case] invalid_path: &[u8]) {
let path: PathBuf = unsafe { OsStr::from_encoded_bytes_unchecked(invalid_path) }.into();
path_to_name(&path).expect_err("must fail");
}
}
|
