Stripping symbols by default for release

Signed-off-by: Louis Vallat <louis@louis-vallat.xyz>

.gitlab-ci.yml

@@ -0,0 +1,43 @@
+image: docker:latest
+services:
+  - docker:dind
+
+stages:
+  - release
+  - deploy
+
+variables:
+  DOCKER_HOST: tcp://docker:2376
+  DOCKER_TLS_CERTDIR: "/certs"
+  CONTAINER_BRANCH_IMAGE: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
+  CONTAINER_RELEASE_IMAGE: $CI_REGISTRY_IMAGE:latest
+
+release:
+  stage: release
+  script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker build . -t $CONTAINER_BRANCH_IMAGE
+    - docker push $CONTAINER_BRANCH_IMAGE
+  except:
+    - master
+
+release-master:
+  stage: release
+  script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker build . -t $CONTAINER_RELEASE_IMAGE
+    - docker push $CONTAINER_RELEASE_IMAGE
+  only:
+    - master
+
+deploy:
+  stage: deploy
+  before_script:
+    - eval $(ssh-agent -s)
+    - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add -
+    - mkdir -p ~/.ssh
+    - chmod 700 ~/.ssh
+  script:
+    - ssh -o StrictHostKeyChecking=no -p $SSH_PORT $SSH_DESTINATION "cd $PATH_TO_APPLICATION; $UPGRADE_COMMAND;"
+  only:
+    - master

Cargo.toml

@@ -6,10 +6,9 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-inotify = "0.10"
-hyper = { version = "0.14", features = ["full"] }
+notify = "4.0.17"
 tokio = { version = "1", features = ["full"] }
-tokio-test = "0.4.2"
+hyper = { version = "0.14", features = ["full"] }
 hyper-tls = "0.5.0"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
@@ -17,3 +16,6 @@ sha1 = { version = "0.6", features = ["std"] }
 openssl = "0.10.38"
 walkdir = "2.3.2"
 publicsuffix = "1.3.1"
+
+[profile.release]
+strip = true

Dockerfile

@@ -10,6 +10,8 @@ FROM debian:stable-slim
 
 RUN apt update && apt install -y ca-certificates openssl && rm -rf /var/lib/apt/lists/*
 
+ADD https://letsencrypt.org/certs/isrgrootx1.pem /root/issuer.pem
+
 COPY --from=builder /root/target/release/tlsa /root/tlsa
 
 CMD ["/root/tlsa"]

LICENSE

@@ -0,0 +1,675 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    OVH DANE Companion
+    Copyright (C) 2022  Louis Vallat
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) 2022  Louis Vallat
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
+

README.md

@@ -0,0 +1,48 @@
+# OVH DANE Companion
+
+> Untested code ahead! This was done in a rush and isn't tested! It *should* work,
+> but I wouldn't be surprised if it breaks sometimes.
+
+## Aim
+
+I wanted to implement in a matter of a few days worth of free time a companion
+container for my Let's Encrypt container. My certificates are generated by a
+Docker container, and I wanted to deploy TLSA records automatically.
+
+DANE and TLSA records are used to avoid TLS downgrade attacks, such as during a
+MITM attacks.
+
+I also wanted to have a 100% score on internet.nl for my email server security,
+and I got [it](https://internet.nl/mail/louis-vallat.xyz/671317/).
+
+## Rollover scheme
+
+There **isn't** any. I could add a "2 1 1" record using Let's Encrypt's root certificates,
+but then I could just use permanently a "2 1 1" record and the "3 1 1" record would
+be useless.
+
+As I used an external container to renew the certificates, I cannot modify the
+renewal procedure, so I can't use the "current + next" rollover scheme.
+
+In compensation, I set the TLSA TLLs as the lowest my DNS provider allows: 60 seconds.
+In case of a key rollover, the TLSA records will be wrong for **at most** 2 minutes
+(2 TTLs just to make sure), as long as some entity on the way doesn't keep the record
+longer than the TTL specified (that can happen with lazy ISPs). TLSA records being
+borked for 2 minutes once every few months shouldn't be an issue.
+
+Although this is not new, maybe a bit young (from 2012), this technology isn't
+widely spread.
+
+## Security addendum
+
+Although it provides a bit more security, as it prevents MITM attacks from
+downgrading your TLS (or disable it all together), I would ***strongly*** recommend
+to send sensitive emails **only** using PGP encryption! Plain text emails are
+privacy nightmares!
+
+## References and links
+
+- Article from Abyss Project: [link](https://www.abyssproject.net/2016/09/creer-utiliser-enregistrements-tlsa-dane/)
+- Internet technologies tester: [link](https://internet.nl/)
+- SMTP Protection HowTo: [link](https://github.com/internetstandards/toolbox-wiki)
+- OVH API: [link](https://eu.api.ovh.com/)

src/main.rs

@@ -1,70 +1,107 @@
 use hyper_tls::HttpsConnector;
 use hyper::Client;
 use walkdir::WalkDir;
-use crate::{utils::{OVHClient, get_delta}, records::{get_all_records_from_zone, refresh_zone, get_records_from_zone, Record}};
+use crate::{
+    utils::{OVHClient, get_delta, get_subdomain_zone_domain_from_pem, compute_certificate, get_hash_from_cert},
+    records::{get_all_records_from_zone, flush_tlsa_record_for_subdomain}};
 use publicsuffix::List;
-use std::fs;
+use notify::{Watcher, RecursiveMode, RawEvent, raw_watcher, Op};
+use std::{sync::mpsc::{channel, Receiver}, env};
 
 mod utils;
 mod records;
 
-#[tokio::main]
-async fn main() {
-    let client = Client::builder().build::<_, hyper::Body>(HttpsConnector::new());
-    let list = List::fetch().unwrap();
+async fn scan_and_update_whole_folder(base_cert_dir: &str, list: &List,
+                                      ovh_client: &OVHClient, issuer_hash: &str) {
     let interesting_records = vec!["A", "AAAA", "MX", "CNAME"];
 
-    let base_cert_dir = "/etc/nginx/certs/";
-    let mut ovh_client = OVHClient {
-        app_key: "".to_string(),
-        app_secret: "".to_string(),
-        consumer_key: "".to_string(),
-        endpoint: "https://eu.api.ovh.com/1.0".to_string(),
-        delta: 0
-    };
-
-    ovh_client.delta = get_delta(&ovh_client, &client).await;
-    println!("Delta time is {}", ovh_client.delta);
-    println!("Sentinel started.");
-
     for entry in WalkDir::new(base_cert_dir).into_iter().filter_map(|e| e.ok()) {
         if !entry.path().ends_with("cert.pem") { continue; }
+
         println!("Found certificate! Located at '{}'.", entry.path().display());
-        let domain = entry.path().parent().unwrap()
-            .strip_prefix(base_cert_dir).unwrap().to_str().unwrap();
-        let parsed_domain = list.parse_domain(domain).unwrap();
-        let zone = parsed_domain.root().unwrap();
-        let subdomain = domain.strip_suffix(zone).unwrap().strip_suffix(".").unwrap_or("");
+        let (subdomain, zone, domain) =
+            get_subdomain_zone_domain_from_pem(entry.path(), base_cert_dir, list);
+        let (subdomain, zone, domain) =
+            (subdomain.as_str(), zone.as_str(), domain.as_str());
         println!("Computing domain '{}', which has domain '{}' and subdomain '{}'.",
                  domain, zone, subdomain);
-        let records = get_all_records_from_zone(&ovh_client, &client, zone, subdomain)
+
+        let records = get_all_records_from_zone(&ovh_client, zone, subdomain)
             .await;
         if !records.iter().any(|r| interesting_records.contains(&r.field_type.as_str())) {
-            println!("\tDomain '{}' has no known interesting record. Skipping.", domain);
-            let tlsa_records_mx = get_records_from_zone(&ovh_client, &client, zone, "TLSA", format!("_587._tcp{}{}", if subdomain.is_empty() { "" } else { "." }, subdomain).as_str()).await;
-            let tlsa_records_site = get_records_from_zone(&ovh_client, &client, zone, "TLSA", format!("_443._tcp{}{}", if subdomain.is_empty() { "" } else { "." }, subdomain).as_str()).await;
-            println!("\tFound {} tlsa records associated with this domain.", tlsa_records_site.len() + tlsa_records_mx.len());
-            // DELETE DANE RECORD IF FOUND ANY
+            println!("\tDomain '{}' has no known interesting record. Flushing.",
+                     domain);
+            flush_tlsa_record_for_subdomain(&ovh_client, zone, subdomain).await;
             println!();
             continue;
         }
-        let certificate = fs::read_to_string(entry.path().to_str().unwrap()).expect("Something went wrong reading the file");
-        let x509cert = openssl::x509::X509::from_pem(certificate.as_bytes()).unwrap();
-        if records.iter().any(|r| r.field_type == "A" || r.field_type == "AAAA" || r.field_type == "CNAME") {
-            println!("\tDomain '{}' is associated with website.", domain);
-            let tlsa_records = get_records_from_zone(&ovh_client, &client, zone, "TLSA", format!("_443._tcp{}{}", if subdomain.is_empty() { "" } else { "." }, subdomain).as_str()).await;
-            println!("\tFound {} tlsa records associated with domain '{}'.", tlsa_records.len(), format!("_443._tcp.{}", subdomain).as_str());
-            // PUT IF NOT MATCHING
-            // POST IF NONE
-        }
-        if records.iter().any(|r| r.field_type == "MX" && r.sub_domain == subdomain) {
-            println!("\tDomain '{}' is associated with mail.", domain);
-            let tlsa_records = get_records_from_zone(&ovh_client, &client, zone, "TLSA", format!("_587._tcp{}{}", if subdomain.is_empty() { "" } else { "." }, subdomain).as_str()).await;
-            println!("\tFound {} tlsa records associated with this domain.", tlsa_records.len());
-            // PUT IF NOT MATCHING
-            // POST IF NONE
-        }
+        compute_certificate(ovh_client, &entry.path(), base_cert_dir, issuer_hash,
+            list).await;
         println!();
     }
 }
 
+async fn watch_folder(base_cert_dir: &str, ovh_client: &OVHClient, list: &List,
+                      rx: &Receiver<RawEvent>, issuer_hash: &str) {
+    loop {
+        match rx.recv() {
+           Ok(RawEvent{path: Some(path), op: Ok(op), cookie: _c}) => {
+                if !path.ends_with("cert.pem")
+                    || (op != Op::CLOSE_WRITE && op != Op::REMOVE) { continue; }
+                if op == Op::CLOSE_WRITE {
+                    println!("Certificate '{}' modified or created. Updating.",
+                             path.display());
+                    compute_certificate(ovh_client, &path.as_path(), base_cert_dir,
+                        issuer_hash, list).await;
+                }
+                if op == Op::REMOVE {
+                    println!("Certificate '{}' deleted. Flushing.", path.display());
+                    let (subdomain, zone, _) =
+                        get_subdomain_zone_domain_from_pem(&path.as_path(),
+                            base_cert_dir, list);
+                    let (subdomain, zone) = (subdomain.as_str(), zone.as_str());
+                    flush_tlsa_record_for_subdomain(ovh_client, zone,
+                                                    subdomain).await;
+                }
+                println!();
+           },
+           Ok(event) => println!("broken event: {:?}", event),
+           Err(e) => println!("watch error: {:?}", e),
+        }
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let list = List::fetch().unwrap();
+
+    let base_cert_dir = "/etc/nginx/certs/";
+    let issuer_hash = get_hash_from_cert("/root/issuer.pem");
+    let mut ovh_client = OVHClient {
+        app_key: env::var("OVH_APP_KEY")
+            .expect("Missing key value 'OVH_APP_KEY'."),
+        app_secret: env::var("OVH_APP_SECRET")
+            .expect("Missing key value 'OVH_APP_SECRET'."),
+        consumer_key: env::var("OVH_CONSUMER_KEY")
+            .expect("Missing key value 'OVH_CONSUMER_KEY'."),
+        endpoint: env::var("OVH_API_ENDPOINT")
+            .expect("Missing key value 'OVH_API_ENDPOINT'."),
+        client:
+            Client::builder().build::<_, hyper::Body>(HttpsConnector::new()),
+        delta: 0
+    };
+
+    let (tx, rx) = channel();
+    let mut watcher = raw_watcher(tx).unwrap();
+    watcher.watch(base_cert_dir, RecursiveMode::Recursive).unwrap();
+    ovh_client.delta = get_delta(&ovh_client).await;
+    println!("Delta time is {}", ovh_client.delta);
+    println!("Starting initialization procedure.");
+
+    scan_and_update_whole_folder(base_cert_dir, &list, &ovh_client,
+                                 issuer_hash.as_str()).await;
+
+    println!("Initializing sequence finished. Entering sentinel mode.");
+    watch_folder(base_cert_dir, &ovh_client, &list, &rx, issuer_hash.as_str()).await;
+}
+

src/records.rs

@@ -1,8 +1,7 @@
-use hyper::{Method, Client, client::HttpConnector};
-use hyper_tls::HttpsConnector;
+use hyper::Method;
 use serde::{Deserialize, Serialize};
 use serde_json::{from_str, json};
-use crate::utils::{OVHClient, build_request, body_to_str};
+use crate::utils::{OVHClient, build_request, body_to_str, get_tlsa_subdomain};
 
 #[derive(Clone, Debug, Deserialize, Serialize)]
 pub struct Record {
@@ -17,86 +16,121 @@ pub struct Record {
 }
 
 
-pub async fn get_record_from_zone(ovh_client: &OVHClient,
-                                   client: &Client<HttpsConnector<HttpConnector>>,
-                                   zone: &str, id: u64) -> Record {
-        let req = build_request(ovh_client, &Method::GET,
-                            format!("/domain/zone/{}/record/{}",
-                                    zone, id).as_str(), "");
-        let res = client.request(req).await.unwrap();
-        assert!(res.status().is_success());
-        return from_str(body_to_str(res.into_body()).await.as_str()).unwrap();
-}
-
-pub async fn get_records_from_zone(ovh_client: &OVHClient,
-                                   client: &Client<HttpsConnector<HttpConnector>>,
-                                   zone: &str, field: &str, subdomain: &str) -> Vec<Record> {
+pub async fn get_record_from_zone(ovh_client: &OVHClient, zone: &str, id: u64)
+    -> Record {
     let req = build_request(ovh_client, &Method::GET,
-                            format!("/domain/zone/{}/record?fieldType={}&subDomain={}",
-                                    zone, field, subdomain).as_str(), "");
-    let res = client.request(req).await.unwrap();
-    assert!(res.status().is_success());
-    let array: Vec<u64> = from_str(body_to_str(res.into_body()).await.as_str()).unwrap();
-    let mut records = vec![];
-    for i in array {
-        records.push(get_record_from_zone(ovh_client, client, zone, i).await);
-    }
-    return records;
-}
-
-pub async fn get_all_records_from_zone(ovh_client: &OVHClient,
-                                       client: &Client<HttpsConnector<HttpConnector>>,
-                                       zone: &str, subdomain: &str) -> Vec<Record> {
-    let req = build_request(ovh_client, &Method::GET,
-                            format!("/domain/zone/{}/record?&subDomain={}",
-                                    zone, subdomain).as_str(), "");
-    let res = client.request(req).await.unwrap();
-    assert!(res.status().is_success());
-    let array: Vec<u64> = from_str(body_to_str(res.into_body()).await.as_str()).unwrap();
-    let mut records = vec![];
-    for i in array {
-        records.push(get_record_from_zone(ovh_client, client, zone, i).await);
-    }
-    return records;
-}
-
-pub async fn add_record_to_zone(ovh_client: &OVHClient,
-                                client: &Client<HttpsConnector<HttpConnector>>,
-                                zone: &str, record: &Record) -> Record {
-    let req = build_request(ovh_client, &Method::POST,
-                            format!("/domain/zone/{}/record", zone).as_str(),
-                            serde_json::to_string(record).unwrap().as_str());
-    let res = client.request(req).await.unwrap();
+                            format!("/domain/zone/{}/record/{}", zone, id)
+                            .as_str(), "");
+    let res = ovh_client.client.request(req).await.unwrap();
     assert!(res.status().is_success());
     return from_str(body_to_str(res.into_body()).await.as_str()).unwrap();
 }
 
-pub async fn update_record_in_zone(ovh_client: &OVHClient,
-                                client: &Client<HttpsConnector<HttpConnector>>,
-                                zone: &str, record: &Record) {
+pub async fn get_records_from_zone(ovh_client: &OVHClient, zone: &str,
+                                   field: &str, subdomain: &str) -> Vec<Record> {
+    let req = build_request(ovh_client, &Method::GET,
+                            format!("/domain/zone/{}/record?fieldType={}&subDomain={}",
+                                    zone, field, subdomain).as_str(), "");
+    let res = ovh_client.client.request(req).await.unwrap();
+    assert!(res.status().is_success());
+    let array: Vec<u64> = from_str(body_to_str(res.into_body()).await.as_str())
+        .unwrap();
+    let mut records = vec![];
+    for i in array {
+        records.push(get_record_from_zone(ovh_client, zone, i).await);
+    }
+    return records;
+}
+
+pub async fn get_all_records_from_zone(ovh_client: &OVHClient, zone: &str,
+                                       subdomain: &str) -> Vec<Record> {
+    let req = build_request(ovh_client, &Method::GET,
+                            format!("/domain/zone/{}/record?&subDomain={}",
+                                    zone, subdomain).as_str(), "");
+    let res = ovh_client.client.request(req).await.unwrap();
+    assert!(res.status().is_success());
+    let array: Vec<u64> = from_str(body_to_str(res.into_body()).await.as_str())
+        .unwrap();
+    let mut records = vec![];
+    for i in array {
+        records.push(get_record_from_zone(ovh_client, zone, i).await);
+    }
+    return records;
+}
+
+pub async fn add_record_to_zone(ovh_client: &OVHClient, zone: &str, record: &Record)
+    -> Record {
+    let req = build_request(ovh_client, &Method::POST,
+                            format!("/domain/zone/{}/record", zone).as_str(),
+                            serde_json::to_string(record).unwrap().as_str());
+    let res = ovh_client.client.request(req).await.unwrap();
+    assert!(res.status().is_success());
+    return from_str(body_to_str(res.into_body()).await.as_str()).unwrap();
+}
+
+pub async fn update_record_in_zone(ovh_client: &OVHClient,  zone: &str,
+                                   record: &Record) {
     let req = build_request(ovh_client, &Method::PUT,
-                            format!("/domain/zone/{}/record/{}", zone, record.id).as_str(),
-                            json!({"subDomain": record.sub_domain,
-                                "target": record.target, "ttl": record.ttl}).to_string().as_str());
-    let res = client.request(req).await.unwrap();
+                            format!("/domain/zone/{}/record/{}", zone, record.id)
+                            .as_str(), json!({"subDomain": record.sub_domain,
+                                "target": record.target, "ttl": record.ttl})
+                            .to_string().as_str());
+    let res = ovh_client.client.request(req).await.unwrap();
     assert!(res.status().is_success());
 }
 
-pub async fn delete_record_from_zone(ovh_client: &OVHClient,
-                                client: &Client<HttpsConnector<HttpConnector>>,
-                                zone: &str, id: u64) {
+pub async fn delete_record_from_zone(ovh_client: &OVHClient, zone: &str, id: u64) {
     let req = build_request(ovh_client, &Method::DELETE,
                             format!("/domain/zone/{}/record/{}", zone, id).as_str(),
                             "");
-    let res = client.request(req).await.unwrap();
+    let res = ovh_client.client.request(req).await.unwrap();
     assert!(res.status().is_success());
 }
 
-pub async fn refresh_zone(ovh_client: &OVHClient, client: &Client<HttpsConnector<HttpConnector>>,
-                          zone: &str) {
-    let req = build_request(ovh_client, &Method::DELETE,
-                            format!("/domain/zone/{}/refresh", zone).as_str(),
-                            "");
-    let res = client.request(req).await.unwrap();
+pub async fn refresh_zone(ovh_client: &OVHClient, zone: &str) {
+    let req = build_request(ovh_client, &Method::POST,
+                            format!("/domain/zone/{}/refresh", zone).as_str(), "");
+    let res = ovh_client.client.request(req).await.unwrap();
     assert!(res.status().is_success());
 }
+
+pub async fn flush_tlsa_record_for_subdomain(ovh_client: &OVHClient, zone: &str,
+                                             subdomain: &str) {
+    let mut tlsa = get_records_from_zone(ovh_client, zone, "TLSA",
+                                         get_tlsa_subdomain(subdomain, 25, "tcp")
+                                         .as_str()).await;
+    tlsa.append(&mut get_records_from_zone(ovh_client, zone, "TLSA",
+                                           get_tlsa_subdomain(subdomain, 443, "tcp")
+                                           .as_str()).await);
+    for record in tlsa {
+        delete_record_from_zone(ovh_client, zone, record.id).await;
+    }
+    refresh_zone(ovh_client, zone).await;
+}
+
+pub async fn update_tlsa_for_subdomain(ovh_client: &OVHClient, zone: &str,
+                                       subdomain: &str, hash: &str,
+                                       issuer_hash: &str, port: u32, protocol: &str) {
+    let tlsa_subdomain = get_tlsa_subdomain(subdomain, port, protocol);
+    let records = get_records_from_zone(ovh_client, zone, "TLSA", &tlsa_subdomain)
+        .await;
+    for record in records {
+        delete_record_from_zone(ovh_client, zone, record.id).await;
+    }
+    add_record_to_zone(ovh_client, zone, &Record {
+        sub_domain: get_tlsa_subdomain(subdomain, port, protocol),
+        target: format!("3 1 1 {}", hash).to_string(),
+        field_type: "TLSA".to_string(),
+        ttl: 0,
+        id: 0
+    }).await;
+    add_record_to_zone(ovh_client, zone, &Record {
+        sub_domain: get_tlsa_subdomain(subdomain, port, protocol),
+        target: format!("2 1 1 {}", issuer_hash).to_string(),
+        field_type: "TLSA".to_string(),
+        ttl: 0,
+        id: 0
+    }).await;
+    refresh_zone(ovh_client, zone).await;
+}
+

src/utils.rs

@@ -1,12 +1,16 @@
-use std::time::{UNIX_EPOCH, SystemTime};
+use openssl::{x509::X509, hash::{hash, MessageDigest}};
+use publicsuffix::List;
+use std::{fmt::Write, path::Path, time::{UNIX_EPOCH, SystemTime}};
 use hyper_tls::HttpsConnector;
 use hyper::{Request, Method, Body, body, Client, client::HttpConnector};
+use crate::records::{get_all_records_from_zone, update_tlsa_for_subdomain};
 
 pub struct OVHClient {
     pub app_key: String,
     pub app_secret: String,
     pub consumer_key: String,
     pub endpoint: String,
+    pub client: Client<HttpsConnector<HttpConnector>>,
     pub delta: i64
 }
 
@@ -14,6 +18,15 @@ pub async fn body_to_str(res: Body) -> String {
     return String::from_utf8(body::to_bytes(res).await.unwrap().to_vec()).unwrap();
 }
 
+pub fn get_subdomain_zone_domain_from_pem(pem: &Path, base_cert_dir: &str, list: &List) -> (String, String, String) {
+    let domain = pem.parent().unwrap()
+        .strip_prefix(base_cert_dir).unwrap().to_str().unwrap();
+    let parsed_domain = list.parse_domain(domain).unwrap();
+    let zone = parsed_domain.root().unwrap();
+    let subdomain = domain.strip_suffix(zone).unwrap().strip_suffix(".").unwrap_or("");
+    return (subdomain.to_string(), zone.to_string(), domain.to_string());
+}
+
 pub fn get_signature(ovh_client: &OVHClient, method: &Method, query: &str, body: &str) -> String {
     let stringapi = format!("{}+{}+{}+{}+{}+{}", ovh_client.app_secret, ovh_client.consumer_key,
                             method.as_str(), query, body,
@@ -22,7 +35,8 @@ pub fn get_signature(ovh_client: &OVHClient, method: &Method, query: &str, body:
     return format!("$1${}", sha1::Sha1::from(stringapi).hexdigest());
 }
 
-pub fn build_request(ovh_client: &OVHClient, method: &Method, uri: &str, body: &str) -> Request<Body> {
+pub fn build_request(ovh_client: &OVHClient, method: &Method, uri: &str, body: &str)
+    -> Request<Body> {
     return Request::builder()
         .method(method)
         .uri(ovh_client.endpoint.clone() + uri)
@@ -30,19 +44,62 @@ pub fn build_request(ovh_client: &OVHClient, method: &Method, uri: &str, body: &
         .header("X-Ovh-Timestamp", SystemTime::now().duration_since(UNIX_EPOCH)
                 .unwrap().as_secs() as i64 + ovh_client.delta)
         .header("X-Ovh-Consumer", ovh_client.consumer_key.clone())
-        .header("X-Ovh-Signature", get_signature(ovh_client, method,
-                                                 format!("{}{}",
-                                                         ovh_client.endpoint, uri).as_str(), body))
+        .header("X-Ovh-Signature",
+                get_signature(ovh_client, method,
+                              format!("{}{}", ovh_client.endpoint, uri)
+                              .as_str(), body))
         .header("Content-Type", "application/json;charset=utf-8")
         .body(Body::from(body.to_string()))
         .expect(uri);
 }
 
-pub async fn get_delta(ovh_client: &OVHClient, client: &Client<HttpsConnector<HttpConnector>>) -> i64 {
+pub async fn get_delta(ovh_client: &OVHClient) -> i64 {
     let req = build_request(&ovh_client, &Method::GET, "/auth/time", "");
-    let res = client.request(req).await.unwrap();
+    let res = ovh_client.client.request(req).await.unwrap();
     let s = res.status();
     assert!(s.is_success());
     let b = body_to_str(res.into_body()).await.parse::<i64>().unwrap();
     return SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs() as i64 - b;
 }
+
+pub fn get_hash_from_cert(path: &str) -> String {
+    let certificate = std::fs::read_to_string(path)
+        .expect("Something went wrong reading certificate file.");
+    let public_key = X509::from_pem(certificate.as_bytes()).unwrap().public_key()
+        .unwrap();
+    let hashed = hash(MessageDigest::sha256(), &public_key.public_key_to_der().unwrap())
+        .unwrap();
+    let mut res = String::with_capacity(64);
+    for byte in &*hashed {
+        write!(&mut res, "{:02x}", byte).unwrap();
+    }
+    return res;
+}
+
+pub fn get_tlsa_subdomain(subdomain: &str, port: u32, protocol: &str) -> String {
+    return format!("_{}._{}{}{}",
+                   port, protocol,
+                   if subdomain.is_empty() { "" } else { "." },
+                   subdomain);
+}
+
+pub async fn compute_certificate(ovh_client: &OVHClient, path: &Path,
+                                 base_cert_dir: &str, issuer_hash: &str, list: &List) {
+    let (subdomain, zone, domain) =
+        get_subdomain_zone_domain_from_pem(path, base_cert_dir, list);
+    let (subdomain, zone, domain) =
+        (subdomain.as_str(), zone.as_str(), domain.as_str());
+    let records = get_all_records_from_zone(&ovh_client, zone, subdomain).await;
+    let hash = get_hash_from_cert(path.to_str().unwrap());
+    if records.iter().any(|r| r.field_type == "A" || r.field_type == "AAAA"
+                          || r.field_type == "CNAME") {
+        println!("\tDomain '{}' is associated with website. Updating.", domain);
+        update_tlsa_for_subdomain(&ovh_client, zone, subdomain,
+                                  hash.as_str(), issuer_hash, 443, "tcp").await;
+    }
+    if records.iter().any(|r| r.field_type == "MX" && r.sub_domain == subdomain) {
+        println!("\tDomain '{}' is associated with mail. Updating.", domain);
+        update_tlsa_for_subdomain(&ovh_client, zone, subdomain,
+                                  hash.as_str(), issuer_hash, 25, "tcp").await;
+    }
+}