Xbase++

Get the Decoded MIME Body Bytes (BinData)

Demonstrates the Chilkat Mime.GetBodyBd method, which replaces the contents of a BinData with the decoded body bytes of the current part. The only argument is the BinData. Base64 and quoted-printable are decoded; headers and boundaries are not included.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is how you extract a part's actual content as bytes — the decoded payload of an attachment or an image, ready to hash, re-save, or hand to another API. Because it works in raw bytes it is the correct choice for binary parts, where a text decode would be wrong. Note it replaces the BinData contents rather than appending.

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Xbase++

LOCAL nSuccess
LOCAL oMime
LOCAL oBd

nSuccess := 0

oMime := CreateObject("Chilkat.Mime")
nSuccess := oMime:LoadMimeFile("qa_data/message.eml")
IF (nSuccess == 0)
    ? oMime:LastErrorText
    oMime:destroy()
    RETURN
ENDIF

//  Replace the contents of a BinData with the decoded body bytes of the current part.  Base64 and
//  quoted-printable are decoded; MIME headers and multipart boundaries are not included.
oBd := CreateObject("Chilkat.BinData")
nSuccess := oMime:GetBodyBd(oBd)
IF (nSuccess == 0)
    ? oMime:LastErrorText
    oMime:destroy()
    oBd:destroy()
    RETURN
ENDIF

? "Decoded body: " + Str(oBd:NumBytes) + " bytes."

oMime:destroy()
oBd:destroy()