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consistently use log.Check for logging errors that "should not happen", don't influence application flow

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sooner or later, someone will notice one of these messages, which will lead us
to a bug.
This commit is contained in:
Mechiel Lukkien
2023-02-16 13:22:00 +01:00
parent ef8e5fa1a8
commit 5c33640aea
30 changed files with 366 additions and 246 deletions
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14
dsn/dsn.go
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@ -151,7 +151,7 @@ func (m *Message) Compose(log *mlog.Log, smtputf8 bool) ([]byte, error) {
}
line := func(w io.Writer) {
w.Write([]byte("\r\n"))
_, _ = w.Write([]byte("\r\n"))
}
// Outer message headers.
@ -179,7 +179,9 @@ func (m *Message) Compose(log *mlog.Log, smtputf8 bool) ([]byte, error) {
if err != nil {
return nil, err
}
msgp.Write([]byte(strings.ReplaceAll(m.TextBody, "\n", "\r\n")))
if _, err := msgp.Write([]byte(strings.ReplaceAll(m.TextBody, "\n", "\r\n"))); err != nil {
return nil, err
}
// Machine-parsable message. ../rfc/3464:455
statusHdr := textproto.MIMEHeader{}
@ -329,10 +331,14 @@ func (m *Message) Compose(log *mlog.Log, smtputf8 bool) ([]byte, error) {
n = 78
}
line, data = data[:n], data[n:]
origp.Write([]byte(line + "\r\n"))
if _, err := origp.Write([]byte(line + "\r\n")); err != nil {
return nil, err
}
}
} else {
origp.Write(headers)
if _, err := origp.Write(headers); err != nil {
return nil, err
}
}
}