deltachat/
html.rs

1//! # Get message as HTML.
2//!
3//! Use `Message.has_html()` to check if the UI shall render a
4//! corresponding button and `MsgId.get_html()` to get the full message.
5//!
6//! Even when the original mime-message is not HTML,
7//! `MsgId.get_html()` will return HTML -
8//! this allows nice quoting, handling linebreaks properly etc.
9
10use std::mem;
11
12use anyhow::{Context as _, Result};
13use base64::Engine as _;
14use mailparse::ParsedContentType;
15use mime::Mime;
16
17use crate::context::Context;
18use crate::headerdef::{HeaderDef, HeaderDefMap};
19use crate::log::warn;
20use crate::message::{self, Message, MsgId};
21use crate::mimeparser::parse_message_id;
22use crate::param::Param::SendHtml;
23use crate::plaintext::PlainText;
24
25impl Message {
26    /// Check if the message can be retrieved as HTML.
27    /// Typically, this is the case, when the mime structure of a Message is modified,
28    /// meaning that some text is cut or the original message
29    /// is in HTML and `simplify()` may hide some maybe important information.
30    /// The corresponding ffi-function is `dc_msg_has_html()`.
31    /// To get the HTML-code of the message, use `MsgId.get_html()`.
32    pub fn has_html(&self) -> bool {
33        self.mime_modified
34    }
35
36    /// Set HTML-part part of a message that is about to be sent.
37    /// The HTML-part is written to the database before sending and
38    /// used as the `text/html` part in the MIME-structure.
39    ///
40    /// Received HTML parts are handled differently,
41    /// they are saved together with the whole MIME-structure
42    /// in `mime_headers` and the HTML-part is extracted using `MsgId::get_html()`.
43    /// (To underline this asynchronicity, we are using the wording "SendHtml")
44    pub fn set_html(&mut self, html: Option<String>) {
45        if let Some(html) = html {
46            self.param.set(SendHtml, html);
47            self.mime_modified = true;
48        } else {
49            self.param.remove(SendHtml);
50            self.mime_modified = false;
51        }
52    }
53}
54
55/// Type defining a rough mime-type.
56/// This is mainly useful on iterating
57/// to decide whether a mime-part has subtypes.
58enum MimeMultipartType {
59    Multiple,
60    Single,
61    Message,
62}
63
64/// Function takes a content type from a ParsedMail structure
65/// and checks and returns the rough mime-type.
66fn get_mime_multipart_type(ctype: &ParsedContentType) -> MimeMultipartType {
67    let mimetype = ctype.mimetype.to_lowercase();
68    if mimetype.starts_with("multipart") && ctype.params.contains_key("boundary") {
69        MimeMultipartType::Multiple
70    } else if mimetype == "message/rfc822" {
71        MimeMultipartType::Message
72    } else {
73        MimeMultipartType::Single
74    }
75}
76
77/// HtmlMsgParser converts a mime-message to HTML.
78#[derive(Debug)]
79struct HtmlMsgParser {
80    pub html: String,
81    pub plain: Option<PlainText>,
82    pub(crate) msg_html: String,
83}
84
85impl HtmlMsgParser {
86    /// Function takes a raw mime-message string,
87    /// searches for the main-text part
88    /// and returns that as parser.html
89    #[expect(clippy::arithmetic_side_effects)]
90    pub async fn from_bytes<'a>(
91        context: &Context,
92        rawmime: &'a [u8],
93    ) -> Result<(Self, mailparse::ParsedMail<'a>)> {
94        let mut parser = HtmlMsgParser {
95            html: "".to_string(),
96            plain: None,
97            msg_html: "".to_string(),
98        };
99
100        let parsedmail = mailparse::parse_mail(rawmime).context("Failed to parse mail")?;
101
102        parser.collect_texts_recursive(context, &parsedmail).await?;
103
104        if parser.html.is_empty() {
105            if let Some(plain) = &parser.plain {
106                parser.html = plain.to_html();
107            }
108        } else {
109            parser.cid_to_data_recursive(context, &parsedmail).await?;
110        }
111        parser.html += &mem::take(&mut parser.msg_html);
112        Ok((parser, parsedmail))
113    }
114
115    /// Function iterates over all mime-parts
116    /// and searches for text/plain and text/html parts and saves the
117    /// first one found.
118    /// in the corresponding structure fields.
119    ///
120    /// Usually, there is at most one plain-text and one HTML-text part,
121    /// multiple plain-text parts might be used for mailinglist-footers,
122    /// therefore we use the first one.
123    #[expect(clippy::arithmetic_side_effects)]
124    async fn collect_texts_recursive<'a>(
125        &'a mut self,
126        context: &'a Context,
127        mail: &'a mailparse::ParsedMail<'a>,
128    ) -> Result<()> {
129        match get_mime_multipart_type(&mail.ctype) {
130            MimeMultipartType::Multiple => {
131                for cur_data in &mail.subparts {
132                    Box::pin(self.collect_texts_recursive(context, cur_data)).await?
133                }
134                Ok(())
135            }
136            MimeMultipartType::Message => {
137                let raw = mail.get_body_raw()?;
138                if raw.is_empty() {
139                    return Ok(());
140                }
141                let (parser, mail) = Box::pin(HtmlMsgParser::from_bytes(context, &raw)).await?;
142                if !parser.html.is_empty() {
143                    let mut text = "\r\n\r\n".to_string();
144                    for h in mail.headers {
145                        let key = h.get_key();
146                        if matches!(
147                            key.to_lowercase().as_str(),
148                            "date"
149                                | "from"
150                                | "sender"
151                                | "reply-to"
152                                | "to"
153                                | "cc"
154                                | "bcc"
155                                | "subject"
156                        ) {
157                            text += &format!("{key}: {}\r\n", h.get_value());
158                        }
159                    }
160                    text += "\r\n";
161                    self.msg_html += &PlainText {
162                        text,
163                        flowed: false,
164                        delsp: false,
165                    }
166                    .to_html();
167                    self.msg_html += &parser.html;
168                }
169                Ok(())
170            }
171            MimeMultipartType::Single => {
172                let mimetype = mail.ctype.mimetype.parse::<Mime>()?;
173                if mimetype == mime::TEXT_HTML {
174                    if self.html.is_empty()
175                        && let Ok(decoded_data) = mail.get_body()
176                    {
177                        self.html = decoded_data;
178                    }
179                } else if mimetype == mime::TEXT_PLAIN
180                    && self.plain.is_none()
181                    && let Ok(decoded_data) = mail.get_body()
182                {
183                    self.plain = Some(PlainText {
184                        text: decoded_data,
185                        flowed: if let Some(format) = mail.ctype.params.get("format") {
186                            format.as_str().eq_ignore_ascii_case("flowed")
187                        } else {
188                            false
189                        },
190                        delsp: if let Some(delsp) = mail.ctype.params.get("delsp") {
191                            delsp.as_str().eq_ignore_ascii_case("yes")
192                        } else {
193                            false
194                        },
195                    });
196                }
197                Ok(())
198            }
199        }
200    }
201
202    /// Replace cid:-protocol by the data:-protocol where appropriate.
203    /// This allows the final html-file to be self-contained.
204    async fn cid_to_data_recursive<'a>(
205        &'a mut self,
206        context: &'a Context,
207        mail: &'a mailparse::ParsedMail<'a>,
208    ) -> Result<()> {
209        match get_mime_multipart_type(&mail.ctype) {
210            MimeMultipartType::Multiple => {
211                for cur_data in &mail.subparts {
212                    Box::pin(self.cid_to_data_recursive(context, cur_data)).await?;
213                }
214                Ok(())
215            }
216            MimeMultipartType::Message => Ok(()),
217            MimeMultipartType::Single => {
218                let mimetype = mail.ctype.mimetype.parse::<Mime>()?;
219                if mimetype.type_() == mime::IMAGE
220                    && let Some(cid) = mail.headers.get_header_value(HeaderDef::ContentId)
221                    && let Ok(cid) = parse_message_id(&cid)
222                    && let Ok(replacement) = mimepart_to_data_url(mail)
223                {
224                    let re_string = format!(
225                        "(<img[^>]*src[^>]*=[^>]*)(cid:{})([^>]*>)",
226                        regex::escape(&cid)
227                    );
228                    match regex::Regex::new(&re_string) {
229                        Ok(re) => {
230                            self.html = re
231                                .replace_all(
232                                    &self.html,
233                                    format!("${{1}}{replacement}${{3}}").as_str(),
234                                )
235                                .as_ref()
236                                .to_string()
237                        }
238                        Err(e) => warn!(
239                            context,
240                            "Cannot create regex for cid: {} throws {}", re_string, e
241                        ),
242                    }
243                }
244                Ok(())
245            }
246        }
247    }
248}
249
250/// Convert a mime part to a data: url as defined in [RFC 2397](https://tools.ietf.org/html/rfc2397).
251fn mimepart_to_data_url(mail: &mailparse::ParsedMail<'_>) -> Result<String> {
252    let data = mail.get_body_raw()?;
253    let data = base64::engine::general_purpose::STANDARD.encode(data);
254    Ok(format!("data:{};base64,{}", mail.ctype.mimetype, data))
255}
256
257impl MsgId {
258    /// Get HTML by database message id.
259    /// Returns `Some` at least if `Message.has_html()` is true.
260    /// NB: we do not save raw mime unconditionally in the database to save space.
261    /// The corresponding ffi-function is `dc_get_msg_html()`.
262    pub async fn get_html(self, context: &Context) -> Result<Option<String>> {
263        // If there are many concurrent db readers, going to the queue earlier makes sense.
264        let (param, rawmime) = tokio::join!(
265            self.get_param(context),
266            message::get_mime_headers(context, self)
267        );
268        if let Some(html) = param?.get(SendHtml) {
269            return Ok(Some(html.to_string()));
270        }
271
272        let rawmime = rawmime?;
273        if !rawmime.is_empty() {
274            match HtmlMsgParser::from_bytes(context, &rawmime).await {
275                Err(err) => {
276                    warn!(context, "get_html: parser error: {:#}", err);
277                    Ok(None)
278                }
279                Ok((parser, _)) => Ok(Some(parser.html)),
280            }
281        } else {
282            warn!(context, "get_html: no mime for {}", self);
283            Ok(None)
284        }
285    }
286}
287
288#[cfg(test)]
289mod tests {
290    use super::*;
291    use crate::chat::{self, Chat, forward_msgs, save_msgs};
292    use crate::config::Config;
293    use crate::constants;
294    use crate::contact::ContactId;
295    use crate::message::{MessengerMessage, Viewtype};
296    use crate::receive_imf::receive_imf;
297    use crate::test_utils::{TestContext, TestContextManager};
298
299    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
300    async fn test_htmlparse_plain_unspecified() {
301        let t = TestContext::new().await;
302        let raw = include_bytes!("../test-data/message/text_plain_unspecified.eml");
303        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
304        assert_eq!(
305            parser.html,
306            r#"<!DOCTYPE html>
307<html><head>
308<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
309<meta name="color-scheme" content="light dark" />
310</head><body>
311This message does not have Content-Type nor Subject.<br/>
312</body></html>
313"#
314        );
315    }
316
317    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
318    async fn test_htmlparse_plain_iso88591() {
319        let t = TestContext::new().await;
320        let raw = include_bytes!("../test-data/message/text_plain_iso88591.eml");
321        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
322        assert_eq!(
323            parser.html,
324            r#"<!DOCTYPE html>
325<html><head>
326<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
327<meta name="color-scheme" content="light dark" />
328</head><body>
329message with a non-UTF-8 encoding: äöüßÄÖÜ<br/>
330</body></html>
331"#
332        );
333    }
334
335    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
336    async fn test_htmlparse_plain_flowed() {
337        let t = TestContext::new().await;
338        let raw = include_bytes!("../test-data/message/text_plain_flowed.eml");
339        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
340        assert!(parser.plain.unwrap().flowed);
341        assert_eq!(
342            parser.html,
343            r#"<!DOCTYPE html>
344<html><head>
345<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
346<meta name="color-scheme" content="light dark" />
347</head><body>
348This line ends with a space and will be merged with the next one due to format=flowed.<br/>
349<br/>
350This line does not end with a space<br/>
351and will be wrapped as usual.<br/>
352</body></html>
353"#
354        );
355    }
356
357    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
358    async fn test_htmlparse_alt_plain() {
359        let t = TestContext::new().await;
360        let raw = include_bytes!("../test-data/message/text_alt_plain.eml");
361        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
362        assert_eq!(
363            parser.html,
364            r#"<!DOCTYPE html>
365<html><head>
366<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
367<meta name="color-scheme" content="light dark" />
368</head><body>
369mime-modified should not be set set as there is no html and no special stuff;<br/>
370although not being a delta-message.<br/>
371test some special html-characters as &lt; &gt; and &amp; but also &quot; and &#x27; :)<br/>
372</body></html>
373"#
374        );
375    }
376
377    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
378    async fn test_htmlparse_html() {
379        let t = TestContext::new().await;
380        let raw = include_bytes!("../test-data/message/text_html.eml");
381        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
382
383        // on windows, `\r\n` linends are returned from mimeparser,
384        // however, rust multiline-strings use just `\n`;
385        // therefore, we just remove `\r` before comparison.
386        assert_eq!(
387            parser.html.replace('\r', ""),
388            r##"
389<html>
390  <p>mime-modified <b>set</b>; simplify is always regarded as lossy.</p>
391</html>"##
392        );
393    }
394
395    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
396    async fn test_htmlparse_alt_html() {
397        let t = TestContext::new().await;
398        let raw = include_bytes!("../test-data/message/text_alt_html.eml");
399        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
400        assert_eq!(
401            parser.html.replace('\r', ""), // see comment in test_htmlparse_html()
402            r##"<html>
403  <p>mime-modified <b>set</b>; simplify is always regarded as lossy.</p>
404</html>
405"##
406        );
407    }
408
409    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
410    async fn test_htmlparse_alt_plain_html() {
411        let t = TestContext::new().await;
412        let raw = include_bytes!("../test-data/message/text_alt_plain_html.eml");
413        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
414        assert_eq!(
415            parser.html.replace('\r', ""), // see comment in test_htmlparse_html()
416            r##"<html>
417  <p>
418    this is <b>html</b>
419  </p>
420</html>
421"##
422        );
423    }
424
425    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
426    async fn test_htmlparse_apple_cid_jpg() {
427        // load raw mime html-data with related image-part (cid:)
428        // and make sure, Content-Id has angle-brackets that are removed correctly.
429        let t = TestContext::new().await;
430        let raw = include_bytes!("../test-data/message/apple_cid_jpg.eml");
431        let test = String::from_utf8_lossy(raw);
432        assert!(test.contains("Content-Id: <8AE052EF-BC90-486F-BB78-58D3590308EC@fritz.box>"));
433        assert!(test.contains("cid:8AE052EF-BC90-486F-BB78-58D3590308EC@fritz.box"));
434        assert!(test.find("data:").is_none());
435
436        // parsing converts cid: to data:
437        let (parser, _) = HtmlMsgParser::from_bytes(&t.ctx, raw).await.unwrap();
438        assert!(parser.html.contains("<html>"));
439        assert!(!parser.html.contains("Content-Id:"));
440        assert!(parser.html.contains("data:image/jpeg;base64,/9j/4AAQ"));
441        assert!(!parser.html.contains("cid:"));
442    }
443
444    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
445    async fn test_get_html_invalid_msgid() {
446        let t = TestContext::new().await;
447        let msg_id = MsgId::new(100);
448        assert!(msg_id.get_html(&t).await.is_err())
449    }
450
451    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
452    async fn test_html_forwarding() -> Result<()> {
453        // alice receives a non-delta html-message
454        let mut tcm = TestContextManager::new();
455        let alice = &tcm.alice().await;
456        let chat = alice
457            .create_chat_with_contact("", "sender@testrun.org")
458            .await;
459        let raw = include_bytes!("../test-data/message/text_alt_plain_html.eml");
460        receive_imf(alice, raw, false).await.unwrap();
461        let msg = alice.get_last_msg_in(chat.get_id()).await;
462        assert_ne!(msg.get_from_id(), ContactId::SELF);
463        assert_eq!(msg.is_dc_message, MessengerMessage::No);
464        assert!(!msg.is_forwarded());
465        assert!(msg.get_text().contains("this is plain"));
466        assert!(msg.has_html());
467        let html = msg.get_id().get_html(alice).await.unwrap().unwrap();
468        assert!(html.contains("this is <b>html</b>"));
469
470        // alice: create chat with bob and forward received html-message there
471        let chat_alice = alice.create_chat_with_contact("", "bob@example.net").await;
472        forward_msgs(alice, &[msg.get_id()], chat_alice.get_id())
473            .await
474            .unwrap();
475        async fn check_sender(ctx: &TestContext, chat: &Chat) {
476            let msg = ctx.get_last_msg_in(chat.get_id()).await;
477            assert_eq!(msg.get_from_id(), ContactId::SELF);
478            assert_eq!(msg.is_dc_message, MessengerMessage::Yes);
479            assert!(msg.is_forwarded());
480            assert!(msg.get_text().contains("this is plain"));
481            assert!(msg.has_html());
482            let html = msg.get_id().get_html(ctx).await.unwrap().unwrap();
483            assert!(html.contains("this is <b>html</b>"));
484        }
485        check_sender(alice, &chat_alice).await;
486
487        // bob: check that bob also got the html-part of the forwarded message
488        let bob = &tcm.bob().await;
489        let chat_bob = bob.create_chat_with_contact("", "alice@example.org").await;
490        async fn check_receiver(ctx: &TestContext, chat: &Chat, sender: &TestContext) {
491            let msg = ctx.recv_msg(&sender.pop_sent_msg().await).await;
492            assert_eq!(chat.id, msg.chat_id);
493            assert_ne!(msg.get_from_id(), ContactId::SELF);
494            assert_eq!(msg.is_dc_message, MessengerMessage::Yes);
495            assert!(msg.is_forwarded());
496            assert!(msg.get_text().contains("this is plain"));
497            assert!(msg.has_html());
498            let html = msg.get_id().get_html(ctx).await.unwrap().unwrap();
499            assert!(html.contains("this is <b>html</b>"));
500        }
501        check_receiver(bob, &chat_bob, alice).await;
502
503        // Let's say that the alice and bob profiles are on the same device,
504        // so alice can forward the message to herself via bob profile!
505        chat::forward_msgs_2ctx(alice, &[msg.get_id()], bob, chat_bob.get_id()).await?;
506        check_sender(bob, &chat_bob).await;
507        check_receiver(alice, &chat_alice, bob).await;
508
509        // Check cross-profile forwarding of long outgoing messages.
510        let line = "this text with 42 chars is just repeated.\n";
511        let long_txt = line.repeat(constants::DC_DESIRED_TEXT_LEN / line.len() + 2);
512        let mut msg = Message::new_text(long_txt);
513        alice.send_msg(chat_alice.id, &mut msg).await;
514        let msg = alice.get_last_msg_in(chat_alice.id).await;
515        assert!(msg.has_html());
516        let html = msg.id.get_html(alice).await?.unwrap();
517        chat::forward_msgs_2ctx(alice, &[msg.get_id()], bob, chat_bob.get_id()).await?;
518        let msg = bob.get_last_msg_in(chat_bob.id).await;
519        assert!(msg.has_html());
520        assert_eq!(msg.id.get_html(bob).await?.unwrap(), html);
521        Ok(())
522    }
523
524    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
525    async fn test_html_save_msg() -> Result<()> {
526        // Alice receives a non-delta html-message
527        let alice = TestContext::new_alice().await;
528        let chat = alice
529            .create_chat_with_contact("", "sender@testrun.org")
530            .await;
531        let raw = include_bytes!("../test-data/message/text_alt_plain_html.eml");
532        receive_imf(&alice, raw, false).await?;
533        let msg = alice.get_last_msg_in(chat.get_id()).await;
534
535        // Alice saves the message
536        let self_chat = alice.get_self_chat().await;
537        save_msgs(&alice, &[msg.id]).await?;
538        let saved_msg = alice.get_last_msg_in(self_chat.get_id()).await;
539        assert_ne!(saved_msg.id, msg.id);
540        assert_eq!(
541            saved_msg.get_original_msg_id(&alice).await?.unwrap(),
542            msg.id
543        );
544        assert!(!saved_msg.is_forwarded()); // UI should not flag "saved messages" as "forwarded"
545        assert_ne!(saved_msg.get_from_id(), ContactId::SELF);
546        assert_eq!(saved_msg.get_from_id(), msg.get_from_id());
547        assert_eq!(saved_msg.is_dc_message, MessengerMessage::No);
548        assert!(saved_msg.get_text().contains("this is plain"));
549        assert!(saved_msg.has_html());
550        let html = saved_msg.get_id().get_html(&alice).await?.unwrap();
551        assert!(html.contains("this is <b>html</b>"));
552
553        Ok(())
554    }
555
556    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
557    async fn test_html_forwarding_encrypted() {
558        let mut tcm = TestContextManager::new();
559        // Alice receives a non-delta html-message
560        // (`ShowEmails=AcceptedContacts` lets Alice actually receive non-delta messages for known
561        // contacts, the contact is marked as known by creating a chat using `chat_with_contact()`)
562        let alice = &tcm.alice().await;
563        alice
564            .set_config(Config::ShowEmails, Some("1"))
565            .await
566            .unwrap();
567        let chat = alice
568            .create_chat_with_contact("", "sender@testrun.org")
569            .await;
570        let raw = include_bytes!("../test-data/message/text_alt_plain_html.eml");
571        receive_imf(alice, raw, false).await.unwrap();
572        let msg = alice.get_last_msg_in(chat.get_id()).await;
573
574        // forward the message to saved-messages,
575        // this will encrypt the message as new_alice() has set up keys
576        let chat = alice.get_self_chat().await;
577        forward_msgs(alice, &[msg.get_id()], chat.get_id())
578            .await
579            .unwrap();
580        let msg = alice.pop_sent_msg().await;
581
582        // receive the message on another device
583        let alice = &tcm.alice().await;
584        alice
585            .set_config(Config::ShowEmails, Some("0"))
586            .await
587            .unwrap();
588        let msg = alice.recv_msg(&msg).await;
589        assert_eq!(msg.chat_id, alice.get_self_chat().await.id);
590        assert_eq!(msg.get_from_id(), ContactId::SELF);
591        assert_eq!(msg.is_dc_message, MessengerMessage::Yes);
592        assert!(msg.get_showpadlock());
593        assert!(msg.is_forwarded());
594        assert!(msg.get_text().contains("this is plain"));
595        assert!(msg.has_html());
596        let html = msg.get_id().get_html(alice).await.unwrap().unwrap();
597        assert!(html.contains("this is <b>html</b>"));
598    }
599
600    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
601    async fn test_set_html() {
602        let mut tcm = TestContextManager::new();
603        let alice = &tcm.alice().await;
604        let bob = &tcm.bob().await;
605
606        // alice sends a message with html-part to bob
607        let chat_id = alice.create_chat(bob).await.id;
608        let mut msg = Message::new_text("plain text".to_string());
609        msg.set_html(Some("<b>html</b> text".to_string()));
610        assert!(msg.mime_modified);
611        chat::send_msg(alice, chat_id, &mut msg).await.unwrap();
612
613        // check the message is written correctly to alice's db
614        let msg = alice.get_last_msg_in(chat_id).await;
615        assert_eq!(msg.get_text(), "plain text");
616        assert!(!msg.is_forwarded());
617        assert!(msg.mime_modified);
618        let html = msg.get_id().get_html(alice).await.unwrap().unwrap();
619        assert!(html.contains("<b>html</b> text"));
620
621        // let bob receive the message
622        let chat_id = bob.create_chat(alice).await.id;
623        let msg = bob.recv_msg(&alice.pop_sent_msg().await).await;
624        assert_eq!(msg.chat_id, chat_id);
625        assert_eq!(msg.get_text(), "plain text");
626        assert!(!msg.is_forwarded());
627        assert!(msg.mime_modified);
628        let html = msg.get_id().get_html(bob).await.unwrap().unwrap();
629        assert!(html.contains("<b>html</b> text"));
630    }
631
632    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
633    async fn test_cp1252_html() -> Result<()> {
634        let t = TestContext::new_alice().await;
635        receive_imf(
636            &t,
637            include_bytes!("../test-data/message/cp1252-html.eml"),
638            false,
639        )
640        .await?;
641        let msg = t.get_last_msg().await;
642        assert_eq!(msg.viewtype, Viewtype::Text);
643        assert!(msg.text.contains("foo bar ä ö ü ß"));
644        assert!(msg.has_html());
645        let html = msg.get_id().get_html(&t).await?.unwrap();
646        println!("{html}");
647        assert!(html.contains("foo bar ä ö ü ß"));
648        Ok(())
649    }
650}
deltachat/html.rs

deltachat/
html.rs
