libcli/dns Improve dns_hosts_file, using Samba3's struct dns_rr_srv

By reworking the 'fake DNS' file to use struct dns_rr_srv it should be
possible to emulate that resolver layer as well as the Samba4
sockaddr_storage* based layer.  This will then give us a common DNS
emulation for 'make test'.

Andrew Bartlett

1 files changed, 68 insertions, 0 deletions

diff --git a/libcli/dns/dns.h b/libcli/dns/dns.h
new file mode 100644
index 0000000000..01aa6c4e6c
--- /dev/null
+++ b/libcli/dns/dns.h
@@ -0,0 +1,68 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Internal DNS query structures
+ *  Copyright (C) Gerald Carter                2006.
+ *  Copyright (C) Andrew Bartlett 2011
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* DNS query section in replies */
+
+struct dns_query {
+	const char *hostname;
+	uint16_t type;
+	uint16_t in_class;
+};
+
+/* DNS RR record in reply */
+
+struct dns_rr {
+	const char *hostname;
+	uint16_t type;
+	uint16_t in_class;
+	uint32_t ttl;
+	uint16_t rdatalen;
+	uint8_t *rdata;
+};
+
+/* SRV records */
+
+struct dns_rr_srv {
+	const char *hostname;
+	uint16_t priority;
+	uint16_t weight;
+	uint16_t port;
+	size_t num_ips;
+	struct sockaddr_storage *ss_s;	/* support multi-homed hosts */
+};
+
+/* NS records */
+
+struct dns_rr_ns {
+	const char *hostname;
+	struct sockaddr_storage ss;
+};
+
+NTSTATUS resolve_dns_hosts_file_as_sockaddr(const char *dns_hosts_file,
+					    const char *name, bool srv_lookup,
+					    TALLOC_CTX *mem_ctx,
+					    struct sockaddr_storage **return_iplist,
+					    int *return_count);
+
+NTSTATUS resolve_dns_hosts_file_as_dns_rr(const char *dns_hosts_file,
+					  const char *name, bool srv_lookup,
+					  TALLOC_CTX *mem_ctx,
+					  struct dns_rr_srv **return_rr,
+					  int *return_count);