lix-project/lix-installer
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Better support users/groups existing before install (#238)

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* Better support users/groups existing before install

* Skip instead of complete if found

* Prod CI

* Add debuging messages

* Mark completed instead of skipped
This commit is contained in:
Ana Hobden 2023-02-09 10:34:34 -08:00 committed by GitHub
parent 28db9f2953
commit ce28eedf2a
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 220 additions and 176 deletions
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4
src/action/base/create_directory.rs
View file

@ -105,7 +105,7 @@ impl Action for CreateDirectory {
let gid = if let Some(group) = group {
Some(
Group::from_name(group.as_str())
.map_err(|e| ActionError::GroupId(group.clone(), e))?
.map_err(|e| ActionError::GettingGroupId(group.clone(), e))?
.ok_or(ActionError::NoGroup(group.clone()))?
.gid,
)
@ -115,7 +115,7 @@ impl Action for CreateDirectory {
let uid = if let Some(user) = user {
Some(
User::from_name(user.as_str())
.map_err(|e| ActionError::UserId(user.clone(), e))?
.map_err(|e| ActionError::GettingUserId(user.clone(), e))?
.ok_or(ActionError::NoUser(user.clone()))?
.uid,
)

4
src/action/base/create_file.rs
View file

@ -118,7 +118,7 @@ impl Action for CreateFile {
let gid = if let Some(group) = group {
Some(
Group::from_name(group.as_str())
.map_err(|e| ActionError::GroupId(group.clone(), e))?
.map_err(|e| ActionError::GettingGroupId(group.clone(), e))?
.ok_or(ActionError::NoGroup(group.clone()))?
.gid,
)
@ -128,7 +128,7 @@ impl Action for CreateFile {
let uid = if let Some(user) = user {
Some(
User::from_name(user.as_str())
.map_err(|e| ActionError::UserId(user.clone(), e))?
.map_err(|e| ActionError::GettingUserId(user.clone(), e))?
.ok_or(ActionError::NoUser(user.clone()))?
.uid,
)

72
src/action/base/create_group.rs
View file

@ -1,3 +1,4 @@
use nix::unistd::Group;
use tokio::process::Command;
use tracing::{span, Span};
@ -12,13 +13,32 @@ Create an operating system level user group
#[derive(Debug, serde::Deserialize, serde::Serialize, Clone)]
pub struct CreateGroup {
name: String,
gid: usize,
gid: u32,
}
impl CreateGroup {
#[tracing::instrument(level = "debug", skip_all)]
pub fn plan(name: String, gid: usize) -> StatefulAction<Self> {
Self { name, gid }.into()
pub fn plan(name: String, gid: u32) -> Result<StatefulAction<Self>, ActionError> {
let this = Self {
name: name.clone(),
gid,
};
// Ensure group does not exists
if let Some(group) = Group::from_name(name.as_str())
.map_err(|e| ActionError::GettingGroupId(name.clone(), e))?
{
if group.gid.as_raw() != gid {
return Err(ActionError::GroupGidMismatch(
name.clone(),
group.gid.as_raw(),
gid,
));
}
tracing::debug!("Creating group `{}` already complete", this.name);
return Ok(StatefulAction::completed(this));
}
Ok(StatefulAction::uncompleted(this))
}
}
@ -59,36 +79,22 @@ impl Action for CreateGroup {
patch: _,
}
| OperatingSystem::Darwin => {
if Command::new("/usr/bin/dscl")
.process_group(0)
.args([".", "-read", &format!("/Groups/{name}")])
.stdin(std::process::Stdio::null())
.stdout(std::process::Stdio::null())
.stderr(std::process::Stdio::piped())
.status()
.await
.map_err(ActionError::Command)?
.success()
{
()
} else {
execute_command(
Command::new("/usr/sbin/dseditgroup")
.process_group(0)
.args([
"-o",
"create",
"-r",
"Nix build group for nix-daemon",
"-i",
&format!("{gid}"),
name.as_str(),
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
}
execute_command(
Command::new("/usr/sbin/dseditgroup")
.process_group(0)
.args([
"-o",
"create",
"-r",
"Nix build group for nix-daemon",
"-i",
&format!("{gid}"),
name.as_str(),
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
},
_ => {
execute_command(

4
src/action/base/create_or_insert_into_file.rs
View file

@ -158,7 +158,7 @@ impl Action for CreateOrInsertIntoFile {
let gid = if let Some(group) = group {
Some(
Group::from_name(group.as_str())
.map_err(|e| ActionError::GroupId(group.clone(), e))?
.map_err(|e| ActionError::GettingGroupId(group.clone(), e))?
.ok_or(ActionError::NoGroup(group.clone()))?
.gid,
)
@ -168,7 +168,7 @@ impl Action for CreateOrInsertIntoFile {
let uid = if let Some(user) = user {
Some(
User::from_name(user.as_str())
.map_err(|e| ActionError::UserId(user.clone(), e))?
.map_err(|e| ActionError::GettingUserId(user.clone(), e))?
.ok_or(ActionError::NoUser(user.clone()))?
.uid,
)

257
src/action/base/create_user.rs
View file

@ -1,3 +1,4 @@
use nix::unistd::User;
use tokio::process::Command;
use tracing::{span, Span};
@ -12,21 +13,50 @@ Create an operating system level user in the given group
#[derive(Debug, serde::Deserialize, serde::Serialize, Clone)]
pub struct CreateUser {
name: String,
uid: usize,
uid: u32,
groupname: String,
gid: usize,
gid: u32,
}
impl CreateUser {
#[tracing::instrument(level = "debug", skip_all)]
pub fn plan(name: String, uid: usize, groupname: String, gid: usize) -> StatefulAction<Self> {
Self {
name,
pub fn plan(
name: String,
uid: u32,
groupname: String,
gid: u32,
) -> Result<StatefulAction<Self>, ActionError> {
let this = Self {
name: name.clone(),
uid,
groupname,
gid,
};
// Ensure user does not exists
if let Some(user) = User::from_name(name.as_str())
.map_err(|e| ActionError::GettingUserId(name.clone(), e))?
{
if user.uid.as_raw() != uid {
return Err(ActionError::UserUidMismatch(
name.clone(),
user.uid.as_raw(),
uid,
));
}
if user.gid.as_raw() != gid {
return Err(ActionError::UserGidMismatch(
name.clone(),
user.gid.as_raw(),
gid,
));
}
tracing::debug!("Creating user `{}` already complete", this.name);
return Ok(StatefulAction::completed(this));
}
.into()
Ok(StatefulAction::uncompleted(this))
}
}
@ -77,122 +107,105 @@ impl Action for CreateUser {
patch: _,
}
| OperatingSystem::Darwin => {
// TODO(@hoverbear): Make this actually work...
// Right now, our test machines do not have a secure token and cannot delete users.
if Command::new("/usr/bin/dscl")
.process_group(0)
.args([".", "-read", &format!("/Users/{name}")])
.stdin(std::process::Stdio::null())
.stdout(std::process::Stdio::null())
.stderr(std::process::Stdio::piped())
.status()
.await
.map_err(ActionError::Command)?
.success()
{
()
} else {
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([".", "-create", &format!("/Users/{name}")])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"UniqueID",
&format!("{uid}"),
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"PrimaryGroupID",
&format!("{gid}"),
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"NFSHomeDirectory",
"/var/empty",
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"UserShell",
"/sbin/nologin",
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-append",
&format!("/Groups/{groupname}"),
"GroupMembership",
])
.arg(&name)
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([".", "-create", &format!("/Users/{name}"), "IsHidden", "1"])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/sbin/dseditgroup")
.process_group(0)
.args(["-o", "edit"])
.arg("-a")
.arg(&name)
.arg("-t")
.arg(&name)
.arg(groupname)
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
}
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([".", "-create", &format!("/Users/{name}")])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"UniqueID",
&format!("{uid}"),
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"PrimaryGroupID",
&format!("{gid}"),
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"NFSHomeDirectory",
"/var/empty",
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-create",
&format!("/Users/{name}"),
"UserShell",
"/sbin/nologin",
])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([
".",
"-append",
&format!("/Groups/{groupname}"),
"GroupMembership",
])
.arg(&name)
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/bin/dscl")
.process_group(0)
.args([".", "-create", &format!("/Users/{name}"), "IsHidden", "1"])
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
execute_command(
Command::new("/usr/sbin/dseditgroup")
.process_group(0)
.args(["-o", "edit"])
.arg("-a")
.arg(&name)
.arg("-t")
.arg(&name)
.arg(groupname)
.stdin(std::process::Stdio::null()),
)
.await
.map_err(|e| ActionError::Command(e))?;
},
_ => {
execute_command(

12
src/action/common/create_users_and_groups.rs
View file

@ -10,11 +10,11 @@ use tracing::{span, Instrument, Span};
#[derive(Debug, serde::Deserialize, serde::Serialize, Clone)]
pub struct CreateUsersAndGroups {
nix_build_user_count: usize,
nix_build_user_count: u32,
nix_build_group_name: String,
nix_build_group_id: usize,
nix_build_group_id: u32,
nix_build_user_prefix: String,
nix_build_user_id_base: usize,
nix_build_user_id_base: u32,
create_group: StatefulAction<CreateGroup>,
create_users: Vec<StatefulAction<CreateUser>>,
}
@ -22,12 +22,10 @@ pub struct CreateUsersAndGroups {
impl CreateUsersAndGroups {
#[tracing::instrument(level = "debug", skip_all)]
pub async fn plan(settings: CommonSettings) -> Result<StatefulAction<Self>, ActionError> {
// TODO(@hoverbear): CHeck if it exist, error if so
let create_group = CreateGroup::plan(
settings.nix_build_group_name.clone(),
settings.nix_build_group_id,
);
// TODO(@hoverbear): CHeck if they exist, error if so
)?;
let create_users = (0..settings.nix_build_user_count)
.map(|count| {
CreateUser::plan(
@ -37,7 +35,7 @@ impl CreateUsersAndGroups {
settings.nix_build_group_id,
)
})
.collect();
.collect::<Result<_, _>>()?;
Ok(Self {
nix_build_user_count: settings.nix_build_user_count,
nix_build_group_name: settings.nix_build_group_name,

10
src/action/mod.rs
View file

@ -303,11 +303,17 @@ pub enum ActionError {
#[error("Truncating `{0}`")]
Truncate(std::path::PathBuf, #[source] std::io::Error),
#[error("Getting uid for user `{0}`")]
UserId(String, #[source] nix::errno::Errno),
GettingUserId(String, #[source] nix::errno::Errno),
#[error("User `{0}` existed but had a different uid ({1}) than planned ({2})")]
UserUidMismatch(String, u32, u32),
#[error("User `{0}` existed but had a different gid ({1}) than planned ({2})")]
UserGidMismatch(String, u32, u32),
#[error("Getting user `{0}`")]
NoUser(String),
#[error("Getting gid for group `{0}`")]
GroupId(String, #[source] nix::errno::Errno),
GettingGroupId(String, #[source] nix::errno::Errno),
#[error("Group `{0}` existed but had a different gid ({1}) than planned ({2})")]
GroupGidMismatch(String, u32, u32),
#[error("Getting group `{0}`")]
NoGroup(String),
#[error("Chowning path `{0}`")]

21
src/action/stateful.rs
View file

@ -217,6 +217,27 @@ where
},
}
}
pub fn completed(action: A) -> Self {
Self {
state: ActionState::Completed,
action,
}
}
pub fn skipped(action: A) -> Self {
Self {
state: ActionState::Skipped,
action,
}
}
pub fn uncompleted(action: A) -> Self {
Self {
state: ActionState::Uncompleted,
action,
}
}
}
/** The state of an [`Action`](crate::action::Action)

12
src/settings.rs
View file

@ -95,7 +95,7 @@ pub struct CommonSettings {
global = true
)
)]
pub(crate) nix_build_user_count: usize,
pub(crate) nix_build_user_count: u32,
/// The Nix build group name
#[cfg_attr(
@ -119,7 +119,7 @@ pub struct CommonSettings {
global = true
)
)]
pub(crate) nix_build_group_id: usize,
pub(crate) nix_build_group_id: u32,
/// The Nix build user prefix (user numbers will be postfixed)
#[cfg_attr(
@ -147,7 +147,7 @@ pub struct CommonSettings {
all(target_os = "linux", feature = "cli"),
clap(default_value_t = 30_000)
)]
pub(crate) nix_build_user_id_base: usize,
pub(crate) nix_build_user_id_base: u32,
/// The Nix package URL
#[cfg_attr(
@ -361,7 +361,7 @@ async fn linux_detect_init() -> (InitSystem, bool) {
// Builder Pattern
impl CommonSettings {
/// Number of build users to create
pub fn nix_build_user_count(&mut self, count: usize) -> &mut Self {
pub fn nix_build_user_count(&mut self, count: u32) -> &mut Self {
self.nix_build_user_count = count;
self
}
@ -385,7 +385,7 @@ impl CommonSettings {
}
/// The Nix build group GID
pub fn nix_build_group_id(&mut self, count: usize) -> &mut Self {
pub fn nix_build_group_id(&mut self, count: u32) -> &mut Self {
self.nix_build_group_id = count;
self
}
@ -397,7 +397,7 @@ impl CommonSettings {
}
/// The Nix build user base UID (ascending)
pub fn nix_build_user_id_base(&mut self, count: usize) -> &mut Self {
pub fn nix_build_user_id_base(&mut self, count: u32) -> &mut Self {
self.nix_build_user_id_base = count;
self
}