[CAMEL-18379] camel-mail: attachments with empty fileName

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.24.3, 3.18.0
• Fix Version/s: 3.14.5, 3.18.2, 3.19.0
• Component/s: camel-mail

Environment

camel 2.24.3 on karaf 4.2.7, openjdk 11.0.15

• Estimated Complexity: Novice
• Assignee: Claus Ibsen
• Reporter: Richard Vigniel
• Created: 10/Aug/22 15:44
• Updated: 11/Aug/22 12:21
• Resolved: 11/Aug/22 12:20

Description

camel-mail cannot consume mails having attachment with empty fileName, for example :

------=_Part_16671_1906075314.1659698158276
Content-Type: image/png; name=""
Content-Disposition: inline; filename=""

...

 

this mail produces the following error:
Caused by: java.lang.IllegalArgumentException: name must be specified and not empty
at org.apache.camel.util.StringHelper.notEmpty(StringHelper.java:335) ~[!/:2.24.3]
at org.apache.camel.component.mail.DelegatingDataSource.<init>(DelegatingDataSource.java:35) ~[!/:2.24.3]

...

proposition: implement same behavior as attachment with no fileName, ie attachment is ignored.

 

workaround: use mapMailMessage=false option on camel source endpoint, so email is polled without error.

then, in a Processor, on exchange object, overload binding class with custom "MailBinding" before reading attachments:
exchange.setProperty(Exchange.BINDING,new NoInlineMailBinding());