[kmime] [Bug 439218] New: Quioted strings containing comma or brackets are not parsed correctly, causes message sending to fail

[Jonathan Marten]

https://bugs.kde.org/show_bug.cgi?id=439218

            Bug ID: 439218
           Summary: Quioted strings containing comma or brackets are not
                    parsed correctly, causes message sending to fail
           Product: kmime
           Version: git
          Platform: Compiled Sources
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: jjm at keelhaul.me.uk
  Target Milestone: ---

SUMMARY

Address parsing does not seem to properly handle quoted strings which contain a
comma or parenthesis characters.  If a KMail message is composed which includes
such an address, whether typed or in reply to a message which contains
addresses formatted such, there is a diagnostic if immediate sending is in use.
 However, if the Send Later agent or Undo Send is enabled, the mail is lost.

STEPS TO REPRODUCE

1. Configure KMail for immediate sending and compose a message with an address
of the form

  "Foo, Bar" <nobody at mailhost>"

where the actual address within <> can be anything.  The comma can be replaced
by an open or close parenthesis.

2. Attempt to send the message.  An error message is displayed, "There were
problems trying to queue the message for sending: Message has no recipients"

3. Enable Undo Send and send the message again.  Observe that no error message
is displayed.

4.  After the Undo Send time, observe that no message has been received for
transmission by the SMTP server and that there are messages in the Akonadi
stderr log:

akonadi_sendlater_agent(203452)/org.kde.pim.messagecomposer
MessageComposer::AkonadiSender::sendOrQueueMessage: KMime::Message: 
[
 "(message headers and text)"
]

akonadi_sendlater_agent(203452)/org.kde.pim.messagecomposer
MessageComposer::AkonadiSender::sendOrQueueMessage: Using transport (
"SMTP:mailhost" , 1503887163 )
akonadi_sendlater_agent(203452)/org.kde.pim.messagecore
MessageCore::StringUtil::splitAddressField: Error in address splitting:
parseAddressList returned false!
akonadi_sendlater_agent(203452)/kf.coreaddons
Kdelibs4Migration::Kdelibs4Migration: Using KDEHOME as the location of the old
config file
akonadi_sendlater_agent(203452)/org.kde.pim.messagecomposer
MessageComposer::AkonadiSender::sendOrQueueMessage: QueueJob started.
...
akonadi_sendlater_agent(203452)/org.kde.pim.messagecomposer
MessageComposer::AkonadiSender::queueJobResult: QueueJob failed with error
"Message has no recipients."

OBSERVED RESULT

Message is not sent, error messages and log as above.

EXPECTED RESULT

The address should be accepted and the message sent.

SOFTWARE/OS VERSIONS

KMime: Git master (5.17.40)
KDE Frameworks Version: 5.84.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION

Setting severity to major because data loss will occur if the Send Later agent
is in used.

According to RFC 5322 section 3.2.4 "Quoted Strings", a quoted string can
contain any printable ASCII character apart from quote and backslash (which can
be quoted with "\").

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