nodedb 0.2.0

Local-first, real-time, edge-to-cloud hybrid database for multi-modal workloads
Documentation 
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

// SPDX-License-Identifier: BUSL-1.1

//! Top-level routers for `GRANT` and `REVOKE` SQL statements.
//! Decides between role-membership and permission-grant paths
//! based on whether the second token is `ROLE`.

use pgwire::api::results::Response;
use pgwire::error::PgWireResult;

use crate::control::security::identity::AuthenticatedIdentity;
use crate::control::state::SharedState;

use super::super::super::types::sqlstate_error;
use super::database_permission::{grant_database, revoke_database};
use super::permission::{grant_permission, revoke_permission};
use super::role::{grant_role, revoke_role};

/// `GRANT ROLE <role> TO <user>` or
/// `GRANT <perm> ON <collection|FUNCTION name> TO <grantee>`.
pub fn handle_grant(
    state: &SharedState,
    identity: &AuthenticatedIdentity,
    parts: &[&str],
) -> PgWireResult<Vec<Response>> {
    if parts.len() < 5 {
        return Err(sqlstate_error(
            "42601",
            "syntax: GRANT ROLE <role> TO <user> | GRANT <perm> ON <collection> TO <grantee>",
        ));
    }

    if parts[1].eq_ignore_ascii_case("ROLE") {
        if parts.len() < 5 {
            return Err(sqlstate_error(
                "42601",
                "syntax: GRANT ROLE <role> TO <user>",
            ));
        }
        return grant_role(state, identity, parts[2], parts[4]);
    }

    // GRANT <perm> ON DATABASE <name> TO <grantee>
    // parts: [GRANT, <perm>, ON, DATABASE, <name>, TO, <grantee>]
    if parts
        .get(2)
        .map(|s| s.eq_ignore_ascii_case("ON"))
        .unwrap_or(false)
        && parts
            .get(3)
            .map(|s| s.eq_ignore_ascii_case("DATABASE"))
            .unwrap_or(false)
    {
        let privilege = parts[1];
        let db_name = parts.get(4).copied().unwrap_or("");
        let grantee = parts
            .iter()
            .position(|p| p.eq_ignore_ascii_case("TO"))
            .and_then(|i| parts.get(i + 1))
            .copied()
            .unwrap_or("");
        return grant_database(state, identity, privilege, db_name, grantee);
    }

    // GRANT <perm> ON [FUNCTION] <name> TO <grantee>
    let perm_str = parts[1];
    let (target_type, target_name) = if parts
        .get(3)
        .map(|s| s.eq_ignore_ascii_case("FUNCTION"))
        .unwrap_or(false)
    {
        ("FUNCTION", parts.get(4).copied().unwrap_or(""))
    } else {
        ("COLLECTION", parts.get(3).copied().unwrap_or(""))
    };
    let grantee = parts
        .iter()
        .position(|p| p.eq_ignore_ascii_case("TO"))
        .and_then(|i| parts.get(i + 1))
        .copied()
        .unwrap_or("");
    grant_permission(state, identity, perm_str, target_type, target_name, grantee)
}

/// `REVOKE ROLE <role> FROM <user>` or
/// `REVOKE <perm> ON <collection|FUNCTION name> FROM <grantee>`.
pub fn handle_revoke(
    state: &SharedState,
    identity: &AuthenticatedIdentity,
    parts: &[&str],
) -> PgWireResult<Vec<Response>> {
    if parts.len() < 5 {
        return Err(sqlstate_error(
            "42601",
            "syntax: REVOKE ROLE <role> FROM <user> | REVOKE <perm> ON <collection> FROM <grantee>",
        ));
    }

    if parts[1].eq_ignore_ascii_case("ROLE") {
        if parts.len() < 5 {
            return Err(sqlstate_error(
                "42601",
                "syntax: REVOKE ROLE <role> FROM <user>",
            ));
        }
        return revoke_role(state, identity, parts[2], parts[4]);
    }

    // REVOKE <perm> ON DATABASE <name> FROM <grantee>
    // parts: [REVOKE, <perm>, ON, DATABASE, <name>, FROM, <grantee>]
    if parts
        .get(2)
        .map(|s| s.eq_ignore_ascii_case("ON"))
        .unwrap_or(false)
        && parts
            .get(3)
            .map(|s| s.eq_ignore_ascii_case("DATABASE"))
            .unwrap_or(false)
    {
        let privilege = parts[1];
        let db_name = parts.get(4).copied().unwrap_or("");
        let grantee = parts
            .iter()
            .position(|p| p.eq_ignore_ascii_case("FROM"))
            .and_then(|i| parts.get(i + 1))
            .copied()
            .unwrap_or("");
        return revoke_database(state, identity, privilege, db_name, grantee);
    }

    // REVOKE <perm> ON [FUNCTION] <name> FROM <grantee>
    let perm_str = parts[1];
    let (target_type, target_name) = if parts
        .get(3)
        .map(|s| s.eq_ignore_ascii_case("FUNCTION"))
        .unwrap_or(false)
    {
        ("FUNCTION", parts.get(4).copied().unwrap_or(""))
    } else {
        ("COLLECTION", parts.get(3).copied().unwrap_or(""))
    };
    let grantee = parts
        .iter()
        .position(|p| p.eq_ignore_ascii_case("FROM"))
        .and_then(|i| parts.get(i + 1))
        .copied()
        .unwrap_or("");
    revoke_permission(state, identity, perm_str, target_type, target_name, grantee)
}