# smfi_replacebody

SYNOPSIS |
    #include <libmilter/mfapi.h>
    int smfi_replacebody(
    	SMFICTX *ctx,
    	unsigned char *bodyp,
    	int bodylen
    );
Replace message-body data.
DESCRIPTION |
Called When | Called only from xxfi_eom. smfi_replacebody may be called more than once.
Effects | smfi_replacebody replaces the body of the current message. If called more than once, subsequent calls result in data being appended to the new body.
ARGUMENTS |
Argument | Description
--- | ---
ctx | Opaque context structure.
bodyp | A pointer to the start of the new body data, which does not have to be null-terminated. If bodyp is NULL, it is treated as having length == 0. Body data should be in CR/LF form.
bodylen | The number of data bytes pointed to by bodyp.
RETURN VALUES | smfi_replacebody fails and returns MI_FAILURE if: bodyp == NULL and bodylen > 0. Changing the body in the current connection state is invalid. A network error occurs. SMFIF_CHGBODY was not set when smfi_register was called. Otherwise, it will return MI_SUCCESS.
NOTES | Since the message body may be very large, setting SMFIF_CHGBODY may significantly affect filter performance. If a filter sets SMFIF_CHGBODY but does not call smfi_replacebody, the original body remains unchanged. For smfi_replacebody, filter order is important. Later filters will see the new body contents created by earlier ones.

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