getmail command crash when receiving an email which has a long From header.

[Asayu123]

Problem Summary

• getmail command crash when receiving an email which has a long From header.

Environment

• django-mailbox==4.8.1 + Python 3.6.3

Description

• If decoded 'from_header' contains more than 255 characters, getmail command crashes.

Details

• While models.Message limits the max length of from_header to 255 chars, models.Mailbox._process_message does not truncate it, and it leads to a crash.

• django-mailbox/django_mailbox/models.py

  Line 357 in 6004a22

  msg.from_header = utils.convert_header_to_unicode(message['from'])

I came up with some plan to fix it.

1. Remove its limit like 'to_header' field.
2. Truncate a decoded header. (but cause a limitation that we can no longer reply that email.)

But I'm not sure which is more suitable.
Thank you in advance 😃

[FranciscoReno]

Hi @Asayu123 , I'm having the same problem you had.
Have you solved this issue? What route did you took?

[Pietro395]

Hi @Asayu123 , I'm having the same problem you had. Have you solved this issue? What route did you took?

Hello @FranciscoReno
Can you share the e-mail so we can test it?
You can also send it to me privately

Thank you

[pfouque]

Hi @FranciscoReno,
Could you manage to provide the failing message header (ideally the anonymized eml file so that we can incorporate it to the test suite)?
I'm curious to see what the header looks like and if increasing the max_length to 320 (the maximum length of an email address) would be sufficient or not.
Thanks