sd-dhcp: parse error message in DECLINE or NAK

If a client sends a DECLINE or a server sends a NAK, they can include
a string with a message to explain the error. Parse this and print it
at debug level.

1 files changed, 7 insertions, 15 deletions

diff --git a/src/libsystemd-network/test-dhcp-option.c b/src/libsystemd-network/test-dhcp-option.c
index 3607df63af..75d22c4df3 100644
--- a/src/libsystemd-network/test-dhcp-option.c
+++ b/src/libsystemd-network/test-dhcp-option.c
@@ -75,9 +75,8 @@ static const char *dhcp_type(int type) {
 static void test_invalid_buffer_length(void) {
         DHCPMessage message;
 
-        assert_se(dhcp_option_parse(&message, 0, NULL, NULL) == -EINVAL);
-        assert_se(dhcp_option_parse(&message, sizeof(DHCPMessage) - 1, NULL, NULL)
-               == -EINVAL);
+        assert_se(dhcp_option_parse(&message, 0, NULL, NULL, NULL) == -EINVAL);
+        assert_se(dhcp_option_parse(&message, sizeof(DHCPMessage) - 1, NULL, NULL, NULL) == -EINVAL);
 }
 
 static void test_message_init(void) {
@@ -101,7 +100,7 @@ static void test_message_init(void) {
         assert_se(magic[2] == 83);
         assert_se(magic[3] == 99);
 
-        assert_se(dhcp_option_parse(message, len, NULL, NULL) >= 0);
+        assert_se(dhcp_option_parse(message, len, NULL, NULL, NULL) >= 0);
 }
 
 static DHCPMessage *create_message(uint8_t *options, uint16_t optlen,
@@ -264,19 +263,12 @@ static void test_options(struct option_desc *desc) {
         buflen = sizeof(DHCPMessage) + optlen;
 
         if (!desc) {
-                assert_se((res = dhcp_option_parse(message, buflen,
-                                                test_options_cb,
-                                                NULL)) == -ENOMSG);
+                assert_se((res = dhcp_option_parse(message, buflen, test_options_cb, NULL, NULL)) == -ENOMSG);
         } else if (desc->success) {
-                assert_se((res = dhcp_option_parse(message, buflen,
-                                                test_options_cb,
-                                                desc)) >= 0);
-                assert_se(desc->pos == -1 && desc->filepos == -1 &&
-                                desc->snamepos == -1);
+                assert_se((res = dhcp_option_parse(message, buflen, test_options_cb, desc, NULL)) >= 0);
+                assert_se(desc->pos == -1 && desc->filepos == -1 && desc->snamepos == -1);
         } else
-                assert_se((res = dhcp_option_parse(message, buflen,
-                                                test_options_cb,
-                                                desc)) < 0);
+                assert_se((res = dhcp_option_parse(message, buflen, test_options_cb, desc, NULL)) < 0);
 
         if (verbose)
                 printf("DHCP type %s\n", dhcp_type(res));