vicarian 0.2.1

Vicarian is a reverse proxy server with ACME support
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

use std::sync::Arc;

use anyhow::{anyhow, Result};
use camino::Utf8PathBuf;
use tracing::info;

use crate::{
    RunContext,
    certificates::HostCertificate,
};


// TODO: We currently use papaya to store lookup tables for multiple
// server support. However we don't actually support multiple servers
// in the config at the moment. This may change, so this is left in
// place for now.
//
// TODO: It _might_ be possible to return references rather than Arcs
// here, which would enforce the store as being the source of
// truth. But a bit fiddly for MVP version.
pub struct CertStore {
    _context: Arc<RunContext>,
    by_host: papaya::HashMap<String, Arc<HostCertificate>>,
    by_file: papaya::HashMap<Utf8PathBuf, Arc<HostCertificate>>,
}

impl CertStore {

    pub fn new(certs: Vec<Arc<HostCertificate>>, _context: Arc<RunContext>) -> Result<Self> {
        info!("Loading host certificates");

        // Create an entry for each alias
        let by_host: papaya::HashMap<String, Arc<HostCertificate>> = certs.iter()
            .flat_map(|cert|
                 cert.hostnames.iter()
                      .map(|hostname| (
                          hostname.clone(),
                          cert.clone()))
            )
            .collect();

        let by_file = certs.iter()
            .flat_map(|cert| {
                vec!((cert.keyfile.clone(), cert.clone()),
                     (cert.certfile.clone(), cert.clone()))
            })
            .collect();

        info!("Loaded {} certificates", certs.len());

        let certstore = Self {
            _context,
            by_host,
            by_file,
        };
        Ok(certstore)
    }

    pub fn by_host(&self, host: &String) -> Option<Arc<HostCertificate>> {
        let pmap = self.by_host.pin();
        pmap.get(host)
            .map(Arc::clone)
    }

    /// Takes a host and returns a matching wildcard, if any.
    pub fn by_wildcard(&self, host: &str) -> Option<Arc<HostCertificate>> {
        host.split_once('.')
            .and_then(|(_host, domain)| {
                let wildcard = format!("*.{domain}");
                self.by_host(&wildcard)
            })

    }

    pub fn by_file(&self, file: &Utf8PathBuf) -> Option<Arc<HostCertificate>> {
        let pmap = self.by_file.pin();
        pmap.get(file)
            .cloned()
    }


    pub fn upsert(&self, newcert: Arc<HostCertificate>) -> Result<()> {
        for hostname in newcert.hostnames.iter() {
            let host = hostname.clone();

            info!("Updating/inserting certificate for {host}");
            self.by_host.pin().update_or_insert(host, |_old| newcert.clone(), newcert.clone());
        }

        let keyfile = newcert.keyfile.clone();
        let certfile = newcert.certfile.clone();
        let by_file = self.by_file.pin();
        by_file.update_or_insert(keyfile, |_old| newcert.clone(), newcert.clone());
        by_file.update_or_insert(certfile, |_old| newcert.clone(), newcert.clone());

        Ok(())
    }

    pub fn update(&self, newcert: Arc<HostCertificate>) -> Result<()> {
        for hostname in newcert.hostnames.iter() {
            info!("Updating certificate for {hostname}");
            self.by_host.pin().update(hostname.clone(), |_old| newcert.clone())
                .ok_or(anyhow!("Matching host for {} not found in cert store", hostname))?;
        }

        let keyfile = newcert.keyfile.clone();
        let certfile = newcert.certfile.clone();
        let by_file = self.by_file.pin();
        by_file.update(keyfile, |_old| newcert.clone())
            .ok_or(anyhow!("File {} not found in cert store", newcert.keyfile))?;
        by_file.update(certfile, |_old| newcert.clone())
            .ok_or(anyhow!("File {} not found in cert store", newcert.certfile))?;

        Ok(())
    }

    pub fn watchlist(&self) -> Vec<Utf8PathBuf> {
        let by_host = self.by_host.pin();
        by_host.values()
            .filter_map(|h| if h.watch {
                Some(vec![h.keyfile.clone(), h.certfile.clone()])
            } else {
                None
            })
            .flatten()
            .collect()
    }

}