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Avoid globbing issues by using symlinks and readlink (#413)

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This commit is contained in:
Ana Hobden 2023-04-11 07:44:20 -07:00 committed by GitHub
parent 75627bcd91
commit 9549d793cc
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 46 additions and 11 deletions
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8
src/action/base/move_unpacked_nix.rs
View file

@ -102,6 +102,14 @@ impl Action for MoveUnpackedNix {
ActionErrorKind::Rename(entry.path().clone(), entry_dest.to_owned(), e)
})
.map_err(Self::error)?;
// Leave a back link where we copied from since later we may need to know which packages we actually transferred
// eg, know which `nix` version we installed when curing a user with several versions installed
tokio::fs::symlink(&entry_dest, entry.path())
.await
.map_err(|e| {
ActionErrorKind::Symlink(entry_dest.to_owned(), entry.path().clone(), e)
})
.map_err(Self::error)?;
}
}

49
src/action/base/setup_default_profile.rs
View file

@ -38,7 +38,11 @@ impl Action for SetupDefaultProfile {
}
fn tracing_span(&self) -> Span {
span!(tracing::Level::DEBUG, "setup_default_profile",)
span!(
tracing::Level::DEBUG,
"setup_default_profile",
unpacked_path = %self.unpacked_path.display(),
)
}
fn execute_description(&self) -> Vec<ActionDescription> {
@ -48,43 +52,62 @@ impl Action for SetupDefaultProfile {
#[tracing::instrument(level = "debug", skip_all)]
async fn execute(&mut self) -> Result<(), ActionError> {
// Find an `nix` package
let nix_pkg_glob = "/nix/store/*-nix-*";
let nix_pkg_glob = format!("{}/nix-*/store/*-nix-*.*.*", self.unpacked_path.display());
let mut found_nix_pkg = None;
for entry in glob(nix_pkg_glob)
for entry in glob(&nix_pkg_glob)
.map_err(|e| Self::error(SetupDefaultProfileError::GlobPatternError(e)))?
{
match entry {
Ok(path) => {
// TODO(@Hoverbear): Should probably ensure is unique
found_nix_pkg = Some(path);
// If we are curing, the user may have multiple of these installed
if let Some(_existing) = found_nix_pkg {
return Err(Self::error(SetupDefaultProfileError::MultipleNixPackages))?;
} else {
found_nix_pkg = Some(path);
}
break;
},
Err(_) => continue, /* Ignore it */
};
}
let nix_pkg = if let Some(nix_pkg) = found_nix_pkg {
nix_pkg
tokio::fs::read_link(&nix_pkg)
.await
.map_err(|e| ActionErrorKind::Canonicalize(nix_pkg, e))
.map_err(Self::error)?
} else {
return Err(Self::error(SetupDefaultProfileError::NoNix));
};
// Find an `nss-cacert` package, add it too.
let nss_ca_cert_pkg_glob = "/nix/store/*-nss-cacert-*";
let nss_ca_cert_pkg_glob = format!(
"{}/nix-*/store/*-nss-cacert-*.*",
self.unpacked_path.display()
);
let mut found_nss_ca_cert_pkg = None;
for entry in glob(nss_ca_cert_pkg_glob)
for entry in glob(&nss_ca_cert_pkg_glob)
.map_err(|e| Self::error(SetupDefaultProfileError::GlobPatternError(e)))?
{
match entry {
Ok(path) => {
// TODO(@Hoverbear): Should probably ensure is unique
found_nss_ca_cert_pkg = Some(path);
// If we are curing, the user may have multiple of these installed
if let Some(_existing) = found_nss_ca_cert_pkg {
return Err(Self::error(
SetupDefaultProfileError::MultipleNssCaCertPackages,
))?;
} else {
found_nss_ca_cert_pkg = Some(path);
}
break;
},
Err(_) => continue, /* Ignore it */
};
}
let nss_ca_cert_pkg = if let Some(nss_ca_cert_pkg) = found_nss_ca_cert_pkg {
nss_ca_cert_pkg
tokio::fs::read_link(&nss_ca_cert_pkg)
.await
.map_err(|e| ActionErrorKind::Canonicalize(nss_ca_cert_pkg, e))
.map_err(Self::error)?
} else {
return Err(Self::error(SetupDefaultProfileError::NoNssCacert));
};
@ -235,6 +258,10 @@ pub enum SetupDefaultProfileError {
NoNix,
#[error("No root home found to place channel configuration in")]
NoRootHome,
#[error("Unarchived Nix store appears to contain multiple `nss-ca-cert` packages, cannot select one")]
MultipleNssCaCertPackages,
#[error("Unarchived Nix store appears to contain multiple `nix` packages, cannot select one")]
MultipleNixPackages,
}
impl Into<ActionErrorKind> for SetupDefaultProfileError {