# verify_token.rs - source
Source of the Rust file `src/api/v1/pow/verify_token.rs`.
Keywords: rust, rustlang, rust-lang

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    /*
    * Copyright (C) 2021  Aravinth Manivannan <realaravinth@batsense.net>
    *
    * This program is free software: you can redistribute it and/or modify
    * it under the terms of the GNU Affero 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 Affero General Public License for more details.
    *
    * You should have received a copy of the GNU Affero General Public License
    * along with this program.  If not, see <https://www.gnu.org/licenses/>.
    */
    //! PoW success token module

    use actix_web::{web, HttpResponse, Responder};
    use libmcaptcha::cache::messages::VerifyCaptchaResult;
    use serde::{Deserialize, Serialize};

    use crate::errors::*;
    use crate::stats::record::record_confirm;
    use crate::AppData;
    use crate::V1_API_ROUTES;

    #[derive(Clone, Debug, Deserialize, Serialize)]
    pub struct CaptchaValidateResp {
        pub valid: bool,
    }

    // API keys are mcaptcha actor names

    /// route hander that validates a PoW solution token
    #[my_codegen::post(
        path = "V1_API_ROUTES.pow.validate_captcha_token.strip_prefix(V1_API_ROUTES.pow.scope).unwrap()"
    )]
    pub async fn validate_captcha_token(
        payload: web::Json<VerifyCaptchaResult>,
        data: AppData,
    ) -> ServiceResult<impl Responder> {
        let key = payload.key.clone();
        let res = data
            .captcha
            .validate_verification_tokens(payload.into_inner())
            .await?;
        let payload = CaptchaValidateResp { valid: res };
        record_confirm(&key, &data.db).await;
        //println!("{:?}", &payload);
        Ok(HttpResponse::Ok().json(payload))
    }

    #[cfg(test)]
    mod tests {
        use actix_web::http::StatusCode;
        use actix_web::test;
        use libmcaptcha::pow::PoWConfig;
        use libmcaptcha::pow::Work;

        use super::*;
        use crate::api::v1::pow::get_config::GetConfigPayload;
        use crate::api::v1::pow::verify_pow::ValidationToken;
        use crate::tests::*;
        use crate::*;

        #[actix_rt::test]
        async fn validate_captcha_token_works() {
            const NAME: &str = "enterprisetken";
            const PASSWORD: &str = "testingpas";
            const EMAIL: &str = "verifyuser@enter.com";
            const VERIFY_CAPTCHA_URL: &str = "/api/v1/pow/verify";
            const GET_URL: &str = "/api/v1/pow/config";
            const VERIFY_TOKEN_URL: &str = "/api/v1/pow/siteverify";
            //        const UPDATE_URL: &str = "/api/v1/mcaptcha/domain/token/duration/update";

            {
                let data = Data::new().await;
                delete_user(NAME, &data).await;
            }

            register_and_signin(NAME, EMAIL, PASSWORD).await;
            let (data, _, _signin_resp, token_key) = add_levels_util(NAME, PASSWORD).await;
            let app = get_app!(data).await;

            let get_config_payload = GetConfigPayload {
                key: token_key.key.clone(),
            };

            // update and check changes

            let get_config_resp = test::call_service(
                &app,
                post_request!(&get_config_payload, GET_URL).to_request(),
            )
            .await;
            assert_eq!(get_config_resp.status(), StatusCode::OK);
            let config: PoWConfig = test::read_body_json(get_config_resp).await;

            let pow = pow_sha256::ConfigBuilder::default()
                .salt(config.salt)
                .build()
                .unwrap();
            let work = pow
                .prove_work(&config.string.clone(), config.difficulty_factor)
                .unwrap();

            let work = Work {
                string: config.string.clone(),
                result: work.result,
                nonce: work.nonce,
                key: token_key.key.clone(),
            };

            let pow_verify_resp = test::call_service(
                &app,
                post_request!(&work, VERIFY_CAPTCHA_URL).to_request(),
            )
            .await;
            assert_eq!(pow_verify_resp.status(), StatusCode::OK);
            let client_token: ValidationToken = test::read_body_json(pow_verify_resp).await;

            let validate_payload = VerifyCaptchaResult {
                token: client_token.token.clone(),
                key: token_key.key.clone(),
            };

            let validate_client_token = test::call_service(
                &app,
                post_request!(&validate_payload, VERIFY_TOKEN_URL).to_request(),
            )
            .await;
            assert_eq!(validate_client_token.status(), StatusCode::OK);
            let resp: CaptchaValidateResp =
                test::read_body_json(validate_client_token).await;
            assert!(resp.valid);

            // string not found
            let string_not_found = test::call_service(
                &app,
                post_request!(&validate_payload, VERIFY_TOKEN_URL).to_request(),
            )
            .await;
            let resp: CaptchaValidateResp = test::read_body_json(string_not_found).await;
            assert!(!resp.valid);

            let validate_payload = VerifyCaptchaResult {
                token: client_token.token.clone(),
                key: client_token.token.clone(),
            };

            // key not found
            let key_not_found = test::call_service(
                &app,
                post_request!(&validate_payload, VERIFY_TOKEN_URL).to_request(),
            )
            .await;
            let resp: CaptchaValidateResp = test::read_body_json(key_not_found).await;
            assert!(!resp.valid);
        }
    }