Initial version of nodemcuv2 dhcp serverHEADmain

Able to offer IP address + DNS/Gateway ...
Worked with devices at my hand.

1 files changed, 65 insertions, 0 deletions

diff --git a/test/native/dhcp.cc b/test/native/dhcp.cc
new file mode 100644
index 0000000..983c6c8
--- /dev/null
+++ b/test/native/dhcp.cc
@@ -0,0 +1,65 @@
+// Copyright (c) 2022 Johannes Stoelp
+
+#include <dhcp.h>
+#include <utils.h>
+
+#include <gtest/gtest.h>
+
+TEST(option, get_available_opt) {
+    u8 opts[] = {
+        into_raw(dhcp_option::PAD), into_raw(dhcp_option::PAD), into_raw(dhcp_option::DHCP_MESSAGE_TYPE), 5 /* len */, 0, 1, 2, 3, 4,
+        into_raw(dhcp_option::END),
+    };
+
+    auto ov = get_option(opts, sizeof(opts), dhcp_option::DHCP_MESSAGE_TYPE);
+
+    ASSERT_EQ(true, ov.has_value());
+    ASSERT_EQ(0, ov.value().data[0]);
+    ASSERT_EQ(1, ov.value().data[1]);
+    ASSERT_EQ(2, ov.value().data[2]);
+    ASSERT_EQ(3, ov.value().data[3]);
+    ASSERT_EQ(4, ov.value().data[4]);
+    ASSERT_EQ(5, ov.value().len);
+}
+
+TEST(option, maleformed_len) {
+    u8 opts[] = {
+        into_raw(dhcp_option::PAD), into_raw(dhcp_option::PAD), into_raw(dhcp_option::DHCP_MESSAGE_TYPE), 5 /* len */, 0,
+        into_raw(dhcp_option::END),
+    };
+
+    {
+        auto ov = get_option(opts, sizeof(opts), dhcp_option::DHCP_MESSAGE_TYPE);
+
+        ASSERT_EQ(false, ov.has_value());
+    }
+    {
+        auto ov = get_option(opts, sizeof(opts), dhcp_option::CLASS_ID);
+
+        ASSERT_EQ(false, ov.has_value());
+    }
+}
+
+TEST(option, maleformed_missing_end) {
+    u8 opts[] = {
+        into_raw(dhcp_option::PAD),
+        into_raw(dhcp_option::PAD),
+    };
+
+    auto ov = get_option(opts, sizeof(opts), dhcp_option::DHCP_MESSAGE_TYPE);
+
+    ASSERT_EQ(false, ov.has_value());
+}
+
+TEST(option, put_opt_val) {
+    u8 options[8] = {0};
+    u32 val = 0xdeadbeef;
+
+    u8* nextp = put_opt_val(options, val);
+
+    ASSERT_EQ(options + 4, nextp);
+    ASSERT_EQ(0xde, options[0]);
+    ASSERT_EQ(0xad, options[1]);
+    ASSERT_EQ(0xbe, options[2]);
+    ASSERT_EQ(0xef, options[3]);
+}
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