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core: DNS stop resolving NAPTR for IP addresses (#2541)

(cherry picked from commit 37f06f031c4ce93bcf4494744282c17f7a2d157c)

Julien Chavanton authored on 05/11/2020 15:09:38
Showing 1 changed files
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@@ -3292,6 +3292,9 @@ inline static int dns_naptr_sip_resolve(struct dns_srv_handle* h,  str* name,
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 		}
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 		try_lookup_naptr = 1;
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 	}
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+	/* check if it's an ip address, dns_srv_sip_resolve will return the right failure */
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+	if (str2ip(name) || str2ip6(name))
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+		goto naptr_not_found;
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 	/* do naptr lookup */
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 	if ((e=dns_get_entry(name, T_NAPTR))==0)
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 		goto naptr_not_found;