    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

    /*
     * Copyright (C) 2022  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/>.
     */
    //! Email operations: verification, notification, etc
    use lettre::{
        message::{header, MultiPart, SinglePart},
        AsyncTransport, Message,
    };
    use sailfish::TemplateOnce;

    use crate::errors::*;
    use crate::Data;

    const PAGE: &str = "Login";

    #[derive(Clone, TemplateOnce)]
    #[template(path = "email/verification/index.html")]
    struct IndexPage<'a> {
        verification_link: &'a str,
    }

    impl<'a> IndexPage<'a> {
        fn new(verification_link: &'a str) -> Self {
            Self { verification_link }
        }
    }

    async fn verification(
        data: &Data,
        to: &str,
        verification_link: &str,
    ) -> ServiceResult<()> {
        if let Some(smtp) = data.settings.smtp.as_ref() {
            let from = format!("mCaptcha Admin <{}>", smtp.from);
            let reply_to = format!("mCaptcha Admin <{}>", smtp.reply);
            const SUBJECT: &str = "[mCaptcha] Please verify your email";

            let plain_text = format!(
                "
    Welcome to mCaptcha!

    Please verify your email address to continue.

    VERIFICATION LINK: {}

    Please ignore this email if you weren't expecting it.

    With best regards,
    Admin
    instance: {}
    project website: {}",
                verification_link,
                &data.settings.server.domain,
                crate::PKG_HOMEPAGE
            );

            let html = IndexPage::new(verification_link).render_once().unwrap();

            let email = Message::builder()
                .from(from.parse().unwrap())
                .reply_to(reply_to.parse().unwrap())
                .to(to.parse().unwrap())
                .subject(SUBJECT)
                .multipart(
                    MultiPart::alternative() // This is composed of two parts.
                        .singlepart(
                            SinglePart::builder()
                                .header(header::ContentType::TEXT_PLAIN)
                                .body(plain_text), // Every message should have a plain text fallback.
                        )
                        .singlepart(
                            SinglePart::builder()
                                .header(header::ContentType::TEXT_HTML)
                                .body(html),
                        ),
                )
                .unwrap();

            data.mailer.as_ref().unwrap().send(email).await?;
        }
        Ok(())
    }

    #[cfg(test)]
    mod tests {
        use super::*;

        use awc::Client;

        #[actix_rt::test]
        async fn email_verification_works_pg() {
            let data = crate::tests::pg::get_data().await;
            email_verification_works(data).await;
        }

        #[actix_rt::test]
        async fn email_verification_works_maria() {
            let data = crate::tests::maria::get_data().await;
            email_verification_works(data).await;
        }

        async fn email_verification_works(data: crate::ArcData) {
            const TO_ADDR: &str = "Hello <realaravinth@localhost>";
            const VERIFICATION_LINK: &str = "https://localhost";
            let settings = &data.settings;
            verification(&data, TO_ADDR, VERIFICATION_LINK)
                .await
                .unwrap();

            let client = Client::default();
            let mut resp = client
                .get("http://localhost:1080/email")
                .send()
                .await
                .unwrap();
            let data: serde_json::Value = resp.json().await.unwrap();
            let data = &data[0];
            let smtp = settings.smtp.as_ref().unwrap();

            let from_addr = &data["headers"]["from"];

            assert!(from_addr.to_string().contains(&smtp.from));

            let body = &data["html"];
            assert!(body.to_string().contains(VERIFICATION_LINK));
        }
    }