# opendmarc_policy_fetch_ruf()

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SYNOPSIS |
    #include <dmarc.h>
    u_char ** opendmarc_policy_fetch_ruf(
    	DMARC_POLICY_T *pctx,
    	u_char *list_buf, size_t size_of_buf, int constant
    );
Query the library to find the list of `ruf=` values from the `DMARC` record.
DESCRIPTION |
Called When | `opendmarc_policy_fetch_ruf()` is called after the DMARC record has been fetched and parsed.
ARGUMENTS |
Argument | Description
--- | ---
pctx | The address of a structure of type `DMARC_POLICY_T` as returned from opendmarc_policy_connect_init().
list_buf | If not NULL, the address of a buffer to receive a comma delimited list as a single string.
size_of_buf | If `list_buf` was not NULL, the the length of that buffer in bytes.
constant | This function returns an argv-style array of stings. Set this to 0 if you will free that array when you are finished with it. Set this to 1 if you want to treat that array as const and have the library magically free it for you.
RETURN VALUES | `!= NULL` -- On success. `NULL` -- The `pctp` pointer was NULL. `NULL` -- If the `DMARC` record contained no `ruf=`
NOTES | If you set `constant` to 1, you must not free the array returned. To do so will have unpredictable results. Call this function only after a `DMARC` record was fetched and parsed with opendmarc_policy_query_dmarc() or supplied to the library with opendmarc_policy_store_dmarc(). Note that each returned record is looked up using DNS to find if it is accepting reports for the from_domain. If not, it is eliminated from the returned list.

Copyright (c) 2012, The Trusted Domain Project. All rights reserved.
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