sd-dhcp-server: add basic message handling and verification

1 files changed, 57 insertions, 0 deletions

diff --git a/src/libsystemd-network/test-dhcp-server.c b/src/libsystemd-network/test-dhcp-server.c
index 2feb124036..dd0f29a04c 100644
--- a/src/libsystemd-network/test-dhcp-server.c
+++ b/src/libsystemd-network/test-dhcp-server.c
@@ -20,6 +20,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <netinet/if_ether.h>
 #include <assert.h>
 #include <errno.h>
 
@@ -54,6 +55,61 @@ static void test_basic(sd_event *event) {
         assert_se(sd_dhcp_server_start(server) >= 0);
 }
 
+static void test_message_handler(void) {
+        _cleanup_dhcp_server_unref_ sd_dhcp_server *server = NULL;
+        struct {
+                DHCPMessage message;
+                struct {
+                        uint8_t code;
+                        uint8_t length;
+                        uint8_t type;
+                } _packed_ option_type;
+                uint8_t end;
+        } _packed_ test = {
+                .message.op = BOOTREQUEST,
+                .message.htype = ARPHRD_ETHER,
+                .message.hlen = ETHER_ADDR_LEN,
+                .option_type.code = DHCP_OPTION_MESSAGE_TYPE,
+                .option_type.length = 1,
+                .option_type.type = DHCP_DISCOVER,
+                .end = DHCP_OPTION_END,
+        };
+
+        assert_se(sd_dhcp_server_new(&server, 1) >= 0);
+
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 1);
+
+        test.end = 0;
+        /* TODO, shouldn't this fail? */
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 1);
+        test.end = DHCP_OPTION_END;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 1);
+
+        test.option_type.code = 0;
+        test.option_type.length = 0;
+        test.option_type.type = 0;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
+        test.option_type.code = DHCP_OPTION_MESSAGE_TYPE;
+        test.option_type.length = 1;
+        test.option_type.type = DHCP_DISCOVER;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 1);
+
+        test.message.op = 0;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
+        test.message.op = BOOTREQUEST;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 1);
+
+        test.message.htype = 0;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
+        test.message.htype = ARPHRD_ETHER;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 1);
+
+        test.message.hlen = 0;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
+        test.message.hlen = ETHER_ADDR_LEN;
+        assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 1);
+}
+
 int main(int argc, char *argv[]) {
         _cleanup_event_unref_ sd_event *e;
 
@@ -64,6 +120,7 @@ int main(int argc, char *argv[]) {
         assert_se(sd_event_new(&e) >= 0);
 
         test_basic(e);
+        test_message_handler();
 
         return 0;
 }