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
149
150
151
152

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

pub mod addresses;
pub mod credit_cards;
pub mod models;
pub mod schema;
pub mod store;

use crate::error::*;

use interrupt_support::{SqlInterruptHandle, SqlInterruptScope};
use rusqlite::{Connection, OpenFlags};
use sql_support::open_database;
use std::sync::Arc;
use std::{
    ops::{Deref, DerefMut},
    path::{Path, PathBuf},
};
use url::Url;

pub struct AutofillDb {
    pub writer: Connection,
    interrupt_handle: Arc<SqlInterruptHandle>,
}

impl AutofillDb {
    pub fn new(db_path: impl AsRef<Path>) -> Result<Self> {
        let db_path = normalize_path(db_path)?;
        Self::new_named(db_path)
    }

    pub fn new_memory(db_path: &str) -> Result<Self> {
        let name = PathBuf::from(format!("file:{}?mode=memory&cache=shared", db_path));
        Self::new_named(name)
    }

    fn new_named(db_path: PathBuf) -> Result<Self> {
        // We always create the read-write connection for an initial open so
        // we can create the schema and/or do version upgrades.
        let flags = OpenFlags::SQLITE_OPEN_NO_MUTEX
            | OpenFlags::SQLITE_OPEN_URI
            | OpenFlags::SQLITE_OPEN_CREATE
            | OpenFlags::SQLITE_OPEN_READ_WRITE;

        let conn = open_database::open_database_with_flags(
            db_path,
            flags,
            &schema::AutofillConnectionInitializer,
        )?;

        Ok(Self {
            interrupt_handle: Arc::new(SqlInterruptHandle::new(&conn)),
            writer: conn,
        })
    }

    #[inline]
    pub fn begin_interrupt_scope(&self) -> Result<SqlInterruptScope> {
        Ok(self.interrupt_handle.begin_interrupt_scope()?)
    }
}

impl Deref for AutofillDb {
    type Target = Connection;

    fn deref(&self) -> &Self::Target {
        &self.writer
    }
}

impl DerefMut for AutofillDb {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.writer
    }
}

fn unurl_path(p: impl AsRef<Path>) -> PathBuf {
    p.as_ref()
        .to_str()
        .and_then(|s| Url::parse(s).ok())
        .and_then(|u| {
            if u.scheme() == "file" {
                u.to_file_path().ok()
            } else {
                None
            }
        })
        .unwrap_or_else(|| p.as_ref().to_owned())
}

fn normalize_path(p: impl AsRef<Path>) -> Result<PathBuf> {
    let path = unurl_path(p);
    if let Ok(canonical) = path.canonicalize() {
        return Ok(canonical);
    }
    // It probably doesn't exist yet. This is an error, although it seems to
    // work on some systems.
    //
    // We resolve this by trying to canonicalize the parent directory, and
    // appending the requested file name onto that. If we can't canonicalize
    // the parent, we return an error.
    //
    // Also, we return errors if the path ends in "..", if there is no
    // parent directory, etc.
    let file_name = path
        .file_name()
        .ok_or_else(|| Error::IllegalDatabasePath(path.clone()))?;

    let parent = path
        .parent()
        .ok_or_else(|| Error::IllegalDatabasePath(path.clone()))?;

    let mut canonical = parent.canonicalize()?;
    canonical.push(file_name);
    Ok(canonical)
}

pub(crate) mod sql_fns {
    use rusqlite::{functions::Context, Result};
    use sync_guid::Guid as SyncGuid;
    use types::Timestamp;

    #[inline(never)]
    #[allow(dead_code)]
    pub fn generate_guid(_ctx: &Context<'_>) -> Result<SyncGuid> {
        Ok(SyncGuid::random())
    }

    #[inline(never)]
    pub fn now(_ctx: &Context<'_>) -> Result<Timestamp> {
        Ok(Timestamp::now())
    }
}

// Helpers for tests
#[cfg(test)]
pub mod test {
    use super::*;
    use std::sync::atomic::{AtomicUsize, Ordering};

    // A helper for our tests to get their own memory Api.
    static ATOMIC_COUNTER: AtomicUsize = AtomicUsize::new(0);

    pub fn new_mem_db() -> AutofillDb {
        let _ = env_logger::try_init();
        let counter = ATOMIC_COUNTER.fetch_add(1, Ordering::Relaxed);
        AutofillDb::new_memory(&format!("test_autofill-api-{}", counter))
            .expect("should get an API")
    }
}