Basic configuration

This patch introduces a basic on disk configuration, comprised of a main
configuration file and per-domain directories.

It's still not complete, but will be extended in subsequent patches.

internal/config/config_test.go

@@ -0,0 +1,104 @@
+package config
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func mustCreateConfig(t *testing.T, contents string) (string, string) {
+	tmpDir, err := ioutil.TempDir("", "chasquid_config_test:")
+	if err != nil {
+		t.Fatalf("Failed to create temp dir: %v\n", tmpDir)
+	}
+
+	confStr := []byte(contents)
+	err = ioutil.WriteFile(tmpDir+"/chasquid.conf", confStr, 0600)
+	if err != nil {
+		t.Fatalf("Failed to write tmp config: %v", err)
+	}
+
+	return tmpDir, tmpDir + "/chasquid.conf"
+}
+
+func TestEmptyConfig(t *testing.T) {
+	tmpDir, path := mustCreateConfig(t, "")
+	defer os.RemoveAll(tmpDir)
+	c, err := Load(path)
+	if err != nil {
+		t.Fatalf("error loading empty config: %v", err)
+	}
+
+	// Test the default values are set.
+
+	hostname, _ := os.Hostname()
+	if c.Hostname == "" || c.Hostname != hostname {
+		t.Errorf("invalid hostname %q, should be: %q", c.Hostname, hostname)
+	}
+
+	if c.MaxDataSizeMb != 50 {
+		t.Errorf("max data size != 50: %d", c.MaxDataSizeMb)
+	}
+
+	if len(c.Address) != 1 || c.Address[0] != "systemd" {
+		t.Errorf("unexpected address default: %v", c.Address)
+	}
+
+	if c.MonitoringAddress != "" {
+		t.Errorf("monitoring address is set: %v", c.MonitoringAddress)
+	}
+
+}
+
+func TestFullConfig(t *testing.T) {
+	confStr := `
+		hostname: "joust"
+		address: ":1234"
+		address: ":5678"
+		monitoring_address: ":1111"
+		max_data_size_mb: 26
+	`
+
+	tmpDir, path := mustCreateConfig(t, confStr)
+	defer os.RemoveAll(tmpDir)
+
+	c, err := Load(path)
+	if err != nil {
+		t.Fatalf("error loading non-existent config: %v", err)
+	}
+
+	if c.Hostname != "joust" {
+		t.Errorf("hostname %q != 'joust'", c.Hostname)
+	}
+
+	if c.MaxDataSizeMb != 26 {
+		t.Errorf("max data size != 26: %d", c.MaxDataSizeMb)
+	}
+
+	if len(c.Address) != 2 ||
+		c.Address[0] != ":1234" || c.Address[1] != ":5678" {
+		t.Errorf("different address: %v", c.Address)
+	}
+
+	if c.MonitoringAddress != ":1111" {
+		t.Errorf("monitoring address %q != ':1111;", c.MonitoringAddress)
+	}
+}
+
+func TestErrorLoading(t *testing.T) {
+	c, err := Load("/does/not/exist")
+	if err == nil {
+		t.Fatalf("loaded a non-existent config: %v", c)
+	}
+}
+
+func TestBrokenConfig(t *testing.T) {
+	tmpDir, path := mustCreateConfig(
+		t, "<invalid> this is not a valid protobuf")
+	defer os.RemoveAll(tmpDir)
+
+	c, err := Load(path)
+	if err == nil {
+		t.Fatalf("loaded an invalid config: %v", c)
+	}
+}