Get the Decoded MIME Body Bytes (BinData)

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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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#include <C_CkMime.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMime mime;
    HCkBinData bd;

    success = FALSE;

    mime = CkMime_Create();
    success = CkMime_LoadMimeFile(mime,"qa_data/message.eml");
    if (success == FALSE) {
        printf("%s\n",CkMime_lastErrorText(mime));
        CkMime_Dispose(mime);
        return;
    }

    //  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.
    bd = CkBinData_Create();
    success = CkMime_GetBodyBd(mime,bd);
    if (success == FALSE) {
        printf("%s\n",CkMime_lastErrorText(mime));
        CkMime_Dispose(mime);
        CkBinData_Dispose(bd);
        return;
    }

    printf("Decoded body: %d bytes.\n",CkBinData_getNumBytes(bd));


    CkMime_Dispose(mime);
    CkBinData_Dispose(bd);

    }