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Pass MUD URLs (RFC 8520) supplied via DHCPv6 to DHCP scripts

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Extract Manufacturer Usage Description (MUD) URL from DHCP Option 112
and make it available to DHCP scripts as DNSMASQ_MUD_URL.

This expands on the initial support for Manufacturer Usage Description
URLs that has been added in the previous commit for DHCPv4 by also
supporting MUD URLs supplied using DHCPv6.

See https://datatracker.ietf.org/doc/html/rfc8520#section-17.3
and https://datatracker.ietf.org/doc/html/rfc8520#section-10

Co-authored-by: Jasper Wiegratz <wiegratz@uni-bremen.de>
This commit is contained in:
Hugo Hakim Damer
2022-07-09 19:45:51 +00:00
committed by Simon Kelley
parent ef6efd69ed
commit 508d6b4885
3 changed files with 15 additions and 2 deletions
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10
src/rfc3315.c
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@@ -1934,6 +1934,16 @@ static void update_leases(struct state *state, struct dhcp_context *context, str
lease_add_extradata(lease, (unsigned char *)daemon->addrbuff, state->link_address ? strlen(daemon->addrbuff) : 0, 0);
void *mud_opt;
if ((mud_opt = opt6_find(state->packet_options, state->end, OPTION6_MUD_URL, 1)))
{
lease_add_extradata(lease, opt6_ptr(mud_opt, 0), opt6_len(mud_opt), NULL);
}
else
{
lease_add_extradata(lease, NULL, 0, 0);
}
if ((class_opt = opt6_find(state->packet_options, state->end, OPTION6_USER_CLASS, 2)))
{
void *enc_opt, *enc_end = opt6_ptr(class_opt, opt6_len(class_opt));