283 lines
8.0 KiB
Rust
283 lines
8.0 KiB
Rust
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use failure::Fallible as Result;
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use database::{Database, KeyDatabase, StatefulTokens, EmailAddressStatus, TpkStatus};
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use database::types::{Fingerprint,Email};
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use mail;
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use tokens::{self, StatelessSerializable};
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use rate_limiter::RateLimiter;
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use sequoia_openpgp::TPK;
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use std::io::Read;
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use std::convert::TryFrom;
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use std::collections::HashMap;
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use self::response::*;
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pub mod request {
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#[derive(Deserialize)]
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pub struct UploadRequest {
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pub keytext: String,
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}
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#[derive(Deserialize)]
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pub struct VerifyRequest {
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pub token: String,
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pub addresses: Vec<String>,
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}
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}
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pub mod response {
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#[derive(Debug,Serialize,Deserialize,PartialEq,Eq)]
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pub enum EmailStatus {
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#[serde(rename = "unpublished")]
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Unpublished,
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#[serde(rename = "pending")]
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Pending,
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#[serde(rename = "published")]
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Published,
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#[serde(rename = "revoked")]
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Revoked,
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}
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use std::collections::HashMap;
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pub enum UploadResponse {
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Ok {
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token: String,
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key_fpr: String,
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status: HashMap<String,EmailStatus>,
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},
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OkMulti { key_fprs: Vec<String> },
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Error(String),
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}
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impl UploadResponse {
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pub fn err(err: &str) -> Self {
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UploadResponse::Error(err.to_owned())
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}
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}
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pub enum PublishResponse {
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Ok { email: String },
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Error(String),
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}
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impl PublishResponse {
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pub fn err(err: &str) -> Self {
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PublishResponse::Error(err.to_owned())
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}
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}
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}
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#[derive(Serialize,Deserialize)]
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struct VerifyTpkState {
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fpr: Fingerprint,
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addresses: Vec<Email>,
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requested: Vec<Email>,
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}
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impl StatelessSerializable for VerifyTpkState {
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}
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pub fn process_key(
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db: &KeyDatabase,
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tokens_stateless: &tokens::Service,
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rate_limiter: &RateLimiter,
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reader: impl Read,
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) -> response::UploadResponse {
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use sequoia_openpgp::parse::Parse;
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use sequoia_openpgp::tpk::TPKParser;
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// First, parse all TPKs and error out if one fails.
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let parser = match TPKParser::from_reader(reader) {
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Ok(p) => p,
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Err(_) => return UploadResponse::err("Failed parsing key"),
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};
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let mut tpks = Vec::new();
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for tpk in parser {
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tpks.push(match tpk {
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Ok(t) => {
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if t.is_tsk() {
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return UploadResponse::err("Whoops, please don't upload secret keys!");
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}
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t
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},
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Err(_) => return UploadResponse::err("No keys uploaded"),
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});
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}
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match tpks.len() {
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0 => UploadResponse::err("No key submitted"),
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1 => process_key_single(db, tokens_stateless, rate_limiter, tpks.into_iter().next().unwrap()),
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_ => process_key_multiple(db, tpks),
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}
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}
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fn process_key_multiple(
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db: &KeyDatabase,
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tpks: Vec<TPK>,
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) -> response::UploadResponse {
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let key_fprs: Vec<_> = tpks
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.into_iter()
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.flat_map(|tpk| Fingerprint::try_from(tpk.fingerprint())
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.map(|fpr| (fpr, tpk)))
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.flat_map(|(fpr, tpk)| db.merge(tpk).map(|_| fpr.to_string()))
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.collect();
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response::UploadResponse::OkMulti { key_fprs }
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}
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fn process_key_single(
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db: &KeyDatabase,
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tokens_stateless: &tokens::Service,
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rate_limiter: &RateLimiter,
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tpk: TPK,
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) -> response::UploadResponse {
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let fp = Fingerprint::try_from(tpk.fingerprint()).unwrap();
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let tpk_status = match db.merge(tpk) {
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Ok(tpk_status) => tpk_status,
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Err(_) => return UploadResponse::err("internal error"),
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};
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let verify_state = {
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let emails = tpk_status.email_status.iter()
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.map(|(email,_)| email.clone())
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.collect();
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VerifyTpkState {
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fpr: fp.clone(),
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addresses: emails,
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requested: vec!(),
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}
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};
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let token = tokens_stateless.create(&verify_state);
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show_upload_verify(rate_limiter, token, tpk_status, verify_state)
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}
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pub fn request_verify(
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db: rocket::State<KeyDatabase>,
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token_stateful: rocket::State<StatefulTokens>,
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token_stateless: rocket::State<tokens::Service>,
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mail_service: rocket::State<mail::Service>,
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rate_limiter: rocket::State<RateLimiter>,
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token: String,
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addresses: Vec<String>,
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) -> response::UploadResponse {
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let (verify_state, tpk_status) = match check_tpk_state(&db, &token_stateless, &token) {
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Ok(ok) => ok,
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Err(e) => return UploadResponse::err(&e.to_string()),
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};
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if tpk_status.is_revoked {
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return show_upload_verify(
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&rate_limiter, token, tpk_status, verify_state);
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}
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let emails_requested: Vec<_> = addresses.into_iter()
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.map(|address| address.parse::<Email>())
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.flatten()
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.filter(|email| verify_state.addresses.contains(email))
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.filter(|email| tpk_status.email_status.iter()
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.any(|(uid_email, status)|
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uid_email == email && *status == EmailAddressStatus::NotPublished
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))
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.collect();
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for email in emails_requested {
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let rate_limit_ok = rate_limiter.action_perform(format!("verify-{}", &email));
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if rate_limit_ok {
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if send_verify_email(&mail_service, &token_stateful, &verify_state.fpr, &email).is_err() {
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return UploadResponse::err(&format!("error sending email to {}", &email));
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}
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}
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}
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show_upload_verify(&rate_limiter, token, tpk_status, verify_state)
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}
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fn check_tpk_state(
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db: &KeyDatabase,
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token_stateless: &tokens::Service,
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token: &str,
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) -> Result<(VerifyTpkState,TpkStatus)> {
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let verify_state = token_stateless.check::<VerifyTpkState>(token)?;
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let tpk_status = db.get_tpk_status(&verify_state.fpr, &verify_state.addresses)?;
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Ok((verify_state, tpk_status))
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}
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fn send_verify_email(
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mail_service: &mail::Service,
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token_stateful: &StatefulTokens,
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fpr: &Fingerprint,
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email: &Email,
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) -> Result<()> {
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let token_content = (fpr.clone(), email.clone());
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let token_str = serde_json::to_string(&token_content)?;
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let token_verify = token_stateful.new_token("verify", token_str.as_bytes())?;
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mail_service.send_verification(
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fpr.to_string(),
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&email,
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&token_verify,
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)
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}
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pub fn verify_confirm(
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db: rocket::State<KeyDatabase>,
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token_service: rocket::State<StatefulTokens>,
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token: String,
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) -> response::PublishResponse {
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let email = match check_publish_token(&db, &token_service, token) {
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Ok(email) => email,
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Err(_) => return PublishResponse::err("token verification failed"),
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};
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response::PublishResponse::Ok { email: email.to_string() }
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}
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fn check_publish_token(
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db: &KeyDatabase,
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token_service: &StatefulTokens,
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token: String,
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) -> Result<Email> {
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let payload = token_service.pop_token("verify", &token)?;
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let (fingerprint, email) = serde_json::from_str(&payload)?;
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db.set_email_published(&fingerprint, &email)?;
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Ok(email)
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}
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fn show_upload_verify(
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rate_limiter: &RateLimiter,
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token: String,
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tpk_status: TpkStatus,
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verify_state: VerifyTpkState,
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) -> response::UploadResponse {
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let key_fpr = verify_state.fpr.to_string();
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if tpk_status.is_revoked {
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return response::UploadResponse::Ok { token, key_fpr, status: HashMap::new() };
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}
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let status: HashMap<_,_> = tpk_status.email_status
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.iter()
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.map(|(email,status)| {
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let is_pending = (*status == EmailAddressStatus::NotPublished) &&
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!rate_limiter.action_check(format!("verify-{}", &email));
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if is_pending {
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(email.to_string(), EmailStatus::Pending)
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} else {
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(email.to_string(), match status {
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EmailAddressStatus::NotPublished => EmailStatus::Unpublished,
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EmailAddressStatus::Published => EmailStatus::Published,
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EmailAddressStatus::Revoked => EmailStatus::Revoked,
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})
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}
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})
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.collect();
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response::UploadResponse::Ok { token, key_fpr, status }
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}
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