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

use actix::prelude::*;
use casbin::prelude::*;
use casbin::{Error as CasbinError, Result};
use std::io::{Error, ErrorKind};
use std::sync::Arc;

#[cfg(feature = "runtime-tokio")]
use tokio::sync::RwLock;

#[cfg(feature = "runtime-async-std")]
use async_std::sync::RwLock;

pub enum CasbinCmd {
    Enforce(Vec<String>),
    AddPolicy(Vec<String>),
    AddPolicies(Vec<Vec<String>>),
    RemovePolicy(Vec<String>),
    RemovePolicies(Vec<Vec<String>>),
    RemoveFilteredPolicy(usize, Vec<String>),
    AddRoleForUser(String, String, Option<String>),
    AddRolesForUser(String, Vec<String>, Option<String>),
    DeleteRoleForUser(String, String, Option<String>),
    DeleteRolesForUser(String, Option<String>),
    GetImplicitRolesForUser(String, Option<String>),
    GetImplicitPermissionsForUser(String, Option<String>),
}

pub enum CasbinResult {
    Enforce(bool),
    AddPolicy(bool),
    AddPolicies(bool),
    RemovePolicy(bool),
    RemovePolicies(bool),
    RemoveFilteredPolicy(bool),
    AddRoleForUser(bool),
    AddRolesForUser(bool),
    DeleteRoleForUser(bool),
    DeleteRolesForUser(bool),
    GetImplicitRolesForUser(Vec<String>),
    GetImplicitPermissionsForUser(Vec<Vec<String>>),
}

impl Message for CasbinCmd {
    type Result = Result<CasbinResult>;
}

pub struct CasbinActor {
    enforcer: Option<Arc<RwLock<Enforcer>>>,
}

impl CasbinActor {
    pub async fn new<M: TryIntoModel, A: TryIntoAdapter>(m: M, a: A) -> Result<Addr<CasbinActor>> {
        let enforcer: Enforcer = Enforcer::new(m, a).await?;
        Ok(Supervisor::start(|_| CasbinActor {
            enforcer: Some(Arc::new(RwLock::new(enforcer))),
        }))
    }
}

impl Actor for CasbinActor {
    type Context = Context<Self>;
}

impl Supervised for CasbinActor {
    fn restarting(&mut self, _: &mut Self::Context) {
        self.enforcer.take();
    }
}

impl Handler<CasbinCmd> for CasbinActor {
    type Result = ResponseActFuture<Self, Result<CasbinResult>>;

    fn handle(&mut self, msg: CasbinCmd, _: &mut Self::Context) -> Self::Result {
        let e = match &self.enforcer {
            Some(x) => x,
            None => {
                return Box::new(actix::fut::err(CasbinError::IoError(Error::new(
                    ErrorKind::NotConnected,
                    "Enforcer droped!",
                ))))
            }
        };
        let cloned_enforcer = Arc::clone(e);
        Box::new(
            async move {
                let mut lock = cloned_enforcer.write().await;
                match msg {
                    CasbinCmd::Enforce(policy) => {
                        lock.enforce(&policy).await.map(CasbinResult::Enforce)
                    }
                    CasbinCmd::AddPolicy(policy) => {
                        lock.add_policy(policy).await.map(CasbinResult::AddPolicy)
                    }
                    CasbinCmd::AddPolicies(policy) => lock
                        .add_policies(policy)
                        .await
                        .map(CasbinResult::AddPolicies),
                    CasbinCmd::RemovePolicy(policy) => lock
                        .remove_policy(policy)
                        .await
                        .map(CasbinResult::RemovePolicy),
                    CasbinCmd::RemovePolicies(policy) => lock
                        .remove_policies(policy)
                        .await
                        .map(CasbinResult::RemovePolicies),
                    CasbinCmd::RemoveFilteredPolicy(idx, policy) => lock
                        .remove_filtered_policy(idx, policy)
                        .await
                        .map(CasbinResult::RemoveFilteredPolicy),
                    CasbinCmd::AddRoleForUser(user, roles, domain) => lock
                        .add_role_for_user(&user, &roles, domain.as_deref())
                        .await
                        .map(CasbinResult::AddRoleForUser),
                    CasbinCmd::AddRolesForUser(user, roles, domain) => lock
                        .add_roles_for_user(&user, roles, domain.as_deref())
                        .await
                        .map(CasbinResult::AddRolesForUser),
                    CasbinCmd::DeleteRoleForUser(user, roles, domain) => lock
                        .delete_role_for_user(&user, &roles, domain.as_deref())
                        .await
                        .map(CasbinResult::DeleteRoleForUser),
                    CasbinCmd::DeleteRolesForUser(user, domain) => lock
                        .delete_roles_for_user(&user, domain.as_deref())
                        .await
                        .map(CasbinResult::DeleteRolesForUser),
                    CasbinCmd::GetImplicitRolesForUser(name, domain) => {
                        Ok(CasbinResult::GetImplicitRolesForUser(
                            lock.get_implicit_roles_for_user(&name, domain.as_deref()),
                        ))
                    }
                    CasbinCmd::GetImplicitPermissionsForUser(name, domain) => {
                        Ok(CasbinResult::GetImplicitPermissionsForUser(
                            lock.get_implicit_permissions_for_user(&name, domain.as_deref()),
                        ))
                    }
                }
            }
            .into_actor(self)
            .map(|res, _act, _ctx| res),
        )
    }
}