More API implementation

src/api.rs

@@ -6,6 +6,7 @@ use crate::schema::connection_capnp;
 use crate::connection::Session;
 
 use crate::db::Databases;
+use crate::db::user::UserId;
 
 use crate::network::Network;
 
@@ -55,11 +56,27 @@ impl connection_capnp::bootstrap::Server for Bootstrap {
         _: MachineSystemParams,
         mut res: MachineSystemResults
     ) -> Promise<(), capnp::Error> {
-        // TODO actual permission check and stuff
-        let c = capnp_rpc::new_client(Machines::new(self.session.clone(), self.db.clone(), self.nw.clone()));
-        res.get().set_machine_system(c);
+        let session = self.session.clone();
+        let accessdb = self.db.access.clone();
+        let nw = self.nw.clone();
+        let f = async move {
+            // Ensure the lock is dropped as soon as possible
+            if let Some(user) = { session.user.lock().await.clone() } {
+                let perms = accessdb.collect_permrules(&user.data)
+                    .map_err(|e| capnp::Error::failed(format!("AccessDB lookup failed: {}", e)))?;
 
-        Promise::ok(())
+                // TODO actual permission check and stuff
+                //      Right now we only check that the user has authenticated at all.
+                let c = capnp_rpc::new_client(Machines::new(user.id, perms, nw));
+                res.get().set_machine_system(c);
+            }
+
+            // Promise is Ok either way, just the machine system may not be set, indicating as
+            // usual a lack of permission.
+            Ok(())
+        };
+
+        Promise::from_future(f)
     }
 }
 

src/api/auth.rs

@@ -64,6 +64,7 @@ impl Callback<AppData, SessionData> for CB {
                         if b {
                             if let Some(s) = cap_session {
                                 if let Ok(Some(user)) = appdata.userdb.get_user(authid) {
+                                    // FIXME: This should set the userid outside the callback
                                     s.user.try_lock().unwrap().replace(user);
                                 }
                             }
@@ -116,7 +117,7 @@ impl authentication_system::Server for Auth {
         _: authentication_system::MechanismsParams,
         mut res: authentication_system::MechanismsResults
     ) -> Promise<(), capnp::Error> {
-        let mechs = match self.ctx.server_mech_list() {
+        /*let mechs = match self.ctx.server_mech_list() {
             Ok(m) => m,
             Err(e) => {
                 return Promise::err(capnp::Error {
@@ -131,7 +132,10 @@ impl authentication_system::Server for Auth {
         let mut res_mechs = res.get().init_mechs(mechvec.len() as u32);
         for (i, m) in mechvec.into_iter().enumerate() {
             res_mechs.set(i as u32, m);
-        }
+        }*/
+        // For now, only PLAIN
+        let mut res_mechs = res.get().init_mechs(1);
+        res_mechs.set(0, "PLAIN");
 
         Promise::ok(())
     }
@@ -146,6 +150,13 @@ impl authentication_system::Server for Auth {
         // Extract the MECHANISM the client wants to use and start a session.
         // Or fail at that and thrown an exception TODO: return Outcome
         let mech = pry!(req.get_mechanism());
+        if pry!(req.get_mechanism()) != "PLAIN" {
+                return Promise::err(capnp::Error {
+                    kind: capnp::ErrorKind::Failed,
+                    description: format!("Invalid SASL mech"),
+                })
+        }
+
         let mut session = match self.ctx.server_start(mech) {
             Ok(s) => s,
             Err(e) => 

src/api/machine.rs

@@ -1,137 +1,115 @@
 use std::sync::Arc;
-use std::ops::Deref;
 
 use capnp::capability::Promise;
 use capnp::Error;
 
 use futures::FutureExt;
 
-use crate::schema::machine_capnp::machine::*;
-use crate::connection::Session;
-use crate::db::Databases;
-use crate::db::machine::{Status, MachineState};
-use crate::machine::{Machine as NwMachine, ReturnToken};
+use crate::db::access::{PrivilegesBuf, PermRule};
+
+use crate::db::machine::Status;
+use crate::machine::Machine as NwMachine;
+use crate::schema::machine_capnp::machine::*;
+
+#[derive(Clone, Copy)]
+pub struct Perms {
+    pub disclose: bool,
+    pub read: bool,
+    pub write: bool,
+    pub manage: bool,
+}
+
+impl Perms {
+    pub fn get_for<'a, I: Iterator<Item=&'a PermRule>>(privs: &'a PrivilegesBuf, rules: I) -> Self {
+        let mut disclose = false;
+        let mut read = false;
+        let mut write = false;
+        let mut manage = false;
+        for rule in rules {
+            if rule.match_perm(&privs.disclose) {
+                disclose = true;
+            }
+            if rule.match_perm(&privs.read) {
+                read = true;
+            }
+            if rule.match_perm(&privs.write) {
+                write = true;
+            }
+            if rule.match_perm(&privs.manage) {
+                manage = true;
+            }
+        }
+
+        Self { disclose, read, write, manage }
+    }
+}
 
-#[derive(Clone)]
 pub struct Machine {
-    session: Arc<Session>,
+    perms: Perms,
     machine: NwMachine,
-    db: Databases,
 }
 
 impl Machine {
-    pub fn new(session: Arc<Session>, machine: NwMachine, db: Databases) -> Self {
-        Machine { session, machine, db }
-    }
-
-    pub fn fill(self: Arc<Self>, builder: &mut Builder) {
-        builder.set_manage(capnp_rpc::new_client(Manage(self.clone())));
-        builder.set_admin(capnp_rpc::new_client(Admin(self.clone())));
+    pub fn new(perms: Perms, machine: NwMachine) -> Self {
+        Self { perms, machine }
     }
 }
 
-#[derive(Clone)]
-pub struct Read(Arc<Machine>);
+impl info::Server for Machine {
+    fn get_machine_info_extended(
+        &mut self,
+        _: info::GetMachineInfoExtendedParams,
+        _results: info::GetMachineInfoExtendedResults,
+    ) -> capnp::capability::Promise<(), capnp::Error> {
+        /*if self.perms.manage {
+            let mut builder = results.get();
+            let mut extinfo = builder.init_machine_info_extended();
+            let mut current = extinfo.init_current_user();
+            // FIXME fill user
+        }
+        Promise::ok(())*/
 
-impl Read {
-    pub fn new(inner: Arc<Machine>) -> Self {
-        Self(inner)
+        Promise::err(capnp::Error::unimplemented("Extended Infos are unavailable".to_string()))
+    }
+
+    fn get_reservation_list(
+        &mut self,
+        _: info::GetReservationListParams,
+        mut results: info::GetReservationListResults,
+    ) -> capnp::capability::Promise<(), capnp::Error> {
+        Promise::err(capnp::Error::unimplemented("Reservations are unavailable".to_string()))
+    }
+
+    fn get_property_list(
+        &mut self,
+        _: info::GetPropertyListParams,
+        mut results: info::GetPropertyListResults,
+    ) -> capnp::capability::Promise<(), capnp::Error> {
+        Promise::err(capnp::Error::unimplemented("Extended Properties are unavailable".to_string()))
     }
 }
 
-impl info::Server for Read {
-}
-
-struct Write(Arc<Machine>);
-
-impl use_::Server for Write {
-    fn use_(&mut self,
-        _params: use_::UseParams,
-        mut results: use_::UseResults)
-    -> Promise<(), Error>
-    {
-        let uid = self.0.session.user.try_lock().unwrap().as_ref().map(|u| u.id.clone());
-        let new_state = MachineState::used(uid.clone());
-        let this = self.0.clone();
-        let f = async move {
-            let res_token = this.machine.request_state_change(
-                this.session.user.try_lock().unwrap().as_ref(), 
-                new_state
-            ).await;
-
-            match res_token {
-                // TODO: Do something with the token we get returned
-                Ok(tok) => {
-                    return Ok(());
-                },
-                Err(e) => Err(capnp::Error::failed(format!("State change request returned {}", e))),
-            }
-        };
-
-        Promise::from_future(f)
-    }
-
-    fn reserve(&mut self,
-        _params: use_::ReserveParams,
-        _results: use_::ReserveResults)
-    -> Promise<(), Error>
-    {
-        unimplemented!()
-    }
-
-}
-
-impl in_use::Server for Write {
-    fn give_back(&mut self,
-        _params: in_use::GiveBackParams,
-        mut results: in_use::GiveBackResults)
-    -> Promise<(), Error>
-    {
-        let this = self.0.clone();
-
-        let f = async move {
-            let status = this.machine.get_status().await;
-            let sess = this.session.clone();
-
-            match status {
-                Status::InUse(Some(uid)) => {
-                    let user = sess.user.lock().await;
-                    if let Some(u) = user.as_ref() {
-                        if u.id == uid {
-                        }
-                    }
-                },
-                // Machine not in use
-                _ => {
-                }
-            }
-        };
-
-        Promise::from_future(f.map(|_| Ok(())))
+impl use_::Server for Machine {
+    fn use_(
+        &mut self,
+        _: use_::UseParams,
+        _: use_::UseResults
+    ) -> capnp::capability::Promise<(), capnp::Error> {
+        Promise::ok(())
     }
 }
 
-struct Manage(Arc<Machine>);
-
-impl manage::Server for Manage {
+impl in_use::Server for Machine {
 }
 
-struct Admin(Arc<Machine>);
-
-impl admin::Server for Admin {
-    fn force_set_state(&mut self,
-        _params: admin::ForceSetStateParams,
-        _results: admin::ForceSetStateResults)
-    -> Promise<(), Error>
-    {
-        unimplemented!()
-    }
-
-    fn force_set_user(&mut self,
-        _params: admin::ForceSetUserParams,
-        _results: admin::ForceSetUserResults)
-    -> Promise<(), Error>
-    {
-        unimplemented!()
-    }
+impl transfer::Server for Machine {
+}
+
+impl check::Server for Machine {
+}
+
+impl manage::Server for Machine {
+}
+
+impl admin::Server for Machine {
 }

src/api/machines.rs

@@ -3,35 +3,39 @@ use std::sync::Arc;
 use capnp::capability::Promise;
 use capnp::Error;
 
+use crate::db::machine::Status;
+use crate::api::machine::*;
+use crate::schema::machine_capnp::machine::MachineState;
 use crate::schema::machinesystem_capnp::machine_system;
 use crate::schema::machinesystem_capnp::machine_system::info as machines;
-use crate::connection::Session;
-
-use crate::db::Databases;
-
 use crate::network::Network;
-
-use super::machine::*;
+use crate::db::user::UserId;
+use crate::db::access::{PermRule, admin_perm};
 
 /// An implementation of the `Machines` API
+#[derive(Clone)]
 pub struct Machines {
-    /// A reference to the connection — as long as at least one API endpoint is
-    /// still alive the session has to be as well.
-    session: Arc<Session>,
-
-    db: Databases,
+    user: UserId,
+    permissions: Vec<PermRule>,
     network: Arc<Network>,
 }
 
 impl Machines {
-    pub fn new(session: Arc<Session>, db: Databases, network: Arc<Network>) -> Self {
-        info!(session.log, "Machines created");
-        Self { session, db, network }
+    pub fn new(user: UserId, permissions: Vec<PermRule>, network: Arc<Network>) -> Self {
+        Self { user, permissions, network }
     }
 }
 
 impl machine_system::Server for Machines {
-
+    // This function shouldn't exist. See fabaccess-api issue #16
+    fn info(&mut self,
+        _:machine_system::InfoParams,
+        mut results: machine_system::InfoResults
+        ) -> capnp::capability::Promise<(), capnp::Error>
+    {
+        results.get().set_info(capnp_rpc::new_client(self.clone()));
+        Promise::ok(())
+    }
 }
 
 impl machines::Server for Machines {
@@ -41,18 +45,61 @@ impl machines::Server for Machines {
         -> Promise<(), Error>
     {
         let v: Vec<(String, crate::machine::Machine)> = self.network.machines.iter()
-            .map(|(n, m)| (n.clone(), m.clone()))
+            .filter(|(_name, machine)| {
+                let required_disclose = &machine.desc.privs.disclose;
+                for perm_rule in self.permissions.iter() {
+                    if perm_rule.match_perm(required_disclose) {
+                        return true;
+                    }
+                }
+
+                false
+            })
+            .map(|(n,m)| (n.clone(), m.clone()))
             .collect();
 
-        /*let mut machines = results.get().init_machines(v.len() as u32);
+        let permissions = self.permissions.clone();
 
+        let f = async move {
+            let mut machines = results.get().init_machine_list(v.len() as u32);
             for (i, (name, machine)) in v.into_iter().enumerate() {
-            trace!(self.session.log, "Adding machine #{} {}: {:?}", i, name, machine);
-            let machine = Arc::new(Machine::new(self.session.clone(), machine, self.db.clone()));
-            let mut builder = machines.reborrow().get(i as u32);
-            machine.fill(&mut builder);
-        }*/
+                let perms = Perms::get_for(&machine.desc.privs, permissions.iter());
 
-        Promise::ok(())
+                let mut builder = machines.reborrow().get(i as u32);
+                builder.set_name(&name);
+                if let Some(ref desc) = machine.desc.description {
+                    builder.set_description(desc);
+                }
+
+                let s = match machine.get_status().await {
+                    Status::Free => MachineState::Free,
+                    Status::Disabled => MachineState::Disabled,
+                    Status::Blocked(_) => MachineState::Blocked,
+                    Status::InUse(_) => MachineState::InUse,
+                    Status::Reserved(_) => MachineState::Reserved,
+                    Status::ToCheck(_) => MachineState::ToCheck,
+                };
+                builder.set_state(s);
+
+                if perms.write {
+                    builder.set_use(capnp_rpc::new_client(Machine::new(perms, machine.clone())));
+                    builder.set_inuse(capnp_rpc::new_client(Machine::new(perms, machine.clone())));
+                }
+                if perms.manage {
+                    builder.set_transfer(capnp_rpc::new_client(Machine::new(perms, machine.clone())));
+                    builder.set_check(capnp_rpc::new_client(Machine::new(perms, machine.clone())));
+                    builder.set_manage(capnp_rpc::new_client(Machine::new(perms, machine.clone())));
+                }
+                if permissions.iter().any(|r| r.match_perm(&admin_perm())) {
+                    builder.set_admin(capnp_rpc::new_client(Machine::new(perms, machine.clone())));
+                }
+
+                builder.set_info(capnp_rpc::new_client(Machine::new(perms, machine)));
+            }
+
+            Ok(())
+        };
+
+        Promise::from_future(f)
     }
 }

src/db/access.rs

@@ -22,10 +22,15 @@ pub struct AccessControl {
     pub internal: Internal,
 }
 
+pub const ADMINPERM: &'static str = "bffh.admin";
+pub fn admin_perm() -> &'static Permission {
+    Permission::new(ADMINPERM)
+}
+
 impl AccessControl {
     pub fn new(internal: Internal) -> Self {
         Self {
-            internal: internal,
+            internal,
         }
     }
 
@@ -47,6 +52,10 @@ impl AccessControl {
         return Ok(false);
     }
 
+    pub fn collect_permrules(&self, user: &UserData) -> Result<Vec<PermRule>> {
+        self.internal.collect_permrules(user)
+    }
+
     pub fn dump_roles(&self) -> Result<Vec<(RoleIdentifier, Role)>> {
         self.internal.dump_roles()
     }
@@ -120,6 +129,22 @@ pub trait RoleDB {
 
         Ok(())
     }
+
+    fn collect_permrules(&self, user: &UserData) -> Result<Vec<PermRule>> {
+        let mut roleset = HashMap::new();
+        for role_id in user.roles.iter() {
+            self.tally_role(&mut roleset, role_id)?;
+        }
+
+        let mut output = Vec::new();
+
+        // Iter all unique role->permissions we've found and early return on match. 
+        for (_roleid, role) in roleset.iter() {
+            output.extend(role.permissions.iter().cloned())
+        }
+
+        return Ok(output);
+    }
 }
 
 /// A "Role" from the Authorization perspective
@@ -310,7 +335,7 @@ impl PermissionBuf {
         self.inner.push_str(perm.as_str())
     }
 
-    pub fn from_string(inner: String) -> Self {
+    pub const fn from_string(inner: String) -> Self {
         Self { inner }
     }
 
@@ -429,7 +454,7 @@ pub enum PermRule {
 
 impl PermRule {
     // Does this rule match that permission
-    fn match_perm<P: AsRef<Permission>>(&self, perm: &P) -> bool {
+    pub fn match_perm<P: AsRef<Permission>>(&self, perm: &P) -> bool {
         match self {
             PermRule::Base(ref base) => base.as_permission() == perm.as_ref(),
             PermRule::Children(ref parent) => parent.as_permission() > perm.as_ref() ,

src/machine.rs

@@ -77,21 +77,19 @@ impl Index {
 #[derive(Debug, Clone)]
 pub struct Machine {
     pub id: uuid::Uuid,
-    pub name: String,
-    pub description: String,
+    pub desc: MachineDescription,
 
     inner: Arc<Mutex<Inner>>,
     access: Arc<access::AccessControl>,
 }
 
 impl Machine {
-    pub fn new(inner: Inner, access: Arc<access::AccessControl>) -> Self {
+    pub fn new(inner: Inner, desc: MachineDescription, access: Arc<access::AccessControl>) -> Self {
         Self { 
             id: uuid::Uuid::default(),
-            name: "".to_string(),
-            description: "".to_string(),
             inner: Arc::new(Mutex::new(inner)),
-            access: access,
+            access,
+            desc,
         }
     }
 
@@ -102,7 +100,7 @@ impl Machine {
         , access: Arc<access::AccessControl>
         ) -> Machine
     {
-        Self::new(Inner::new(id, desc, state), access)
+        Self::new(Inner::new(id, state), desc, access)
     }
 
     pub fn from_file<P: AsRef<Path>>(path: P, access: Arc<access::AccessControl>) 
@@ -129,14 +127,14 @@ impl Machine {
 
         let f = async move {
             if let Some(udata) = udata {
-                let mut guard = this.inner.try_lock().unwrap();
-                if this.access.check(&udata, &guard.desc.privs.write).await? {
+                if this.access.check(&udata, &this.desc.privs.write).await? {
+                    let mut guard = this.inner.lock().await;
                     guard.do_state_change(new_state);
                     return Ok(ReturnToken::new(this.inner.clone()))
                 }
             } else {
                 if new_state == MachineState::free() {
-                    let mut guard = this.inner.try_lock().unwrap();
+                    let mut guard = this.inner.lock().await;
                     guard.do_state_change(new_state);
                     return Ok(ReturnToken::new(this.inner.clone()));
                 }
@@ -148,6 +146,20 @@ impl Machine {
         Box::pin(f)
     }
 
+    pub fn do_state_change(&self, new_state: MachineState) 
+        -> BoxFuture<'static, Result<ReturnToken>>
+    {
+        let this = self.clone();
+
+        let f = async move {
+            let mut guard = this.inner.lock().await;
+            guard.do_state_change(new_state);
+            return Ok(ReturnToken::new(this.inner.clone()))
+        };
+
+        Box::pin(f)
+    }
+
     pub fn create_token(&self)  -> ReturnToken {
         ReturnToken::new(self.inner.clone())
     }
@@ -161,6 +173,10 @@ impl Machine {
         let guard = self.inner.try_lock().unwrap();
         guard.signal()
     }
+
+    pub fn get_inner(&self) -> Arc<Mutex<Inner>> {
+        self.inner.clone()
+    }
 }
 
 impl Deref for Machine {
@@ -182,9 +198,6 @@ pub struct Inner {
     /// Globally unique machine readable identifier
     pub id: MachineIdentifier,
 
-    /// Descriptor of the machine
-    pub desc: MachineDescription,
-
     /// The state of the machine as bffh thinks the machine *should* be in.
     ///
     /// This is a Signal generator. Subscribers to this signal will be notified of changes. In the
@@ -195,13 +208,11 @@ pub struct Inner {
 
 impl Inner {
     pub fn new ( id: MachineIdentifier
-               , desc: MachineDescription
                , state: MachineState
                ) -> Inner 
     {
         Inner {
-            id: id,
-            desc: desc,
+            id,
             state: Mutable::new(state),
             reset: None,
         }