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DKIM: if one of signatures are correct for dkim domain, then use it. #48

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DKIM: if one of signatures are correct for dkim domain, then use it. #48

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35 changes: 22 additions & 13 deletions src/src/dkim.c
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Original file line number Diff line number Diff line change
Expand Up @@ -279,6 +279,7 @@ void
dkim_exim_acl_setup(uschar * id)
{
pdkim_signature * sig;
pdkim_signature *candidate_sig = NULL;
uschar * cmp_val;

dkim_cur_sig = NULL;
Expand All @@ -295,20 +296,28 @@ for (sig = dkim_signatures; sig; sig = sig->next)
)
{
dkim_cur_sig = sig;

/* The "dkim_domain" and "dkim_selector" expansion variables have
related globals, since they are used in the signing code too.
Instead of inventing separate names for verification, we set
them here. This is easy since a domain and selector is guaranteed
to be in a signature. The other dkim_* expansion items are
dynamically fetched from dkim_cur_sig at expansion time (see
function below). */

dkim_signing_domain = US sig->domain;
dkim_signing_selector = US sig->selector;
dkim_key_length = sig->sigdata.len * 8;
return;
if (!candidate_sig) candidate_sig = sig;
if (sig->verify_status == PDKIM_VERIFY_PASS)
{
candidate_sig = sig;
break;
}
}

if (candidate_sig)
{
/* The "dkim_domain" and "dkim_selector" expansion variables have
related globals, since they are used in the signing code too.
Instead of inventing separate names for verification, we set
them here. This is easy since a domain and selector is guaranteed
to be in a signature. The other dkim_* expansion items are
dynamically fetched from dkim_cur_sig at expansion time (see
function below). */

dkim_signing_domain = US candidate_sig->domain;
dkim_signing_selector = US candidate_sig->selector;
dkim_key_length = candidate_sig->sigdata.len * 8;
}
}


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