MVP, no mod tools or anything but it works

config/config.go

@@ -0,0 +1,93 @@
+package config
+
+import (
+	"flag"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"os"
+)
+
+var configFileName = "./config.yml"
+
+func init() {
+	flag.StringVar(&configFileName, "config", "./config.yml", "Config File Location")
+}
+
+type Config struct {
+	Site              SiteConfig    `yaml:"site"`             // Site/HTML Configuration
+	DB                DBConfig      `yaml:"db"`               // Database Configuration
+	HostnameWhiteList []string      `yaml:"hosts"`            // List of valid hostnames, ignored if empty
+	ListenOn          string        `yaml:"listen_on"`        // Address & Port to use
+	MasterSecret      string        `yaml:"secret"`           // Master Secret for keychain
+	DisableSecurity   bool          `yaml:"disable_security"` // Disables various flags to ensure non-HTTPS requests work
+	Captcha           CaptchaConfig `yaml:"captcha"`
+}
+
+const (
+	CaptchaRecaptcha = "recaptcha"
+	CaptchaDisabled  = "disabled"
+)
+
+type CaptchaConfig struct {
+	Mode     string            `yaml:"mode"` // Captcha Mode
+	Settings map[string]string `yaml:"settings,inline"`
+}
+
+type SiteConfig struct {
+	Title        string `yaml:"title"`       // Site Title
+	Description  string `yaml:"description"` // Site Description
+	PrimaryColor string `yaml:"color"`       // Primary Color for Size
+}
+
+type DBConfig struct {
+	File     string `yaml:"file"`
+	ReadOnly bool   `yaml:"read_only"`
+}
+
+func Load() (*Config, error) {
+	var config = &Config{
+		Site: SiteConfig{
+			Title:        "NyxChan",
+			PrimaryColor: "#78909c",
+			Description:  "NyxChan Default Configuration",
+		},
+		DB: DBConfig{
+			File:     ":memory:",
+			ReadOnly: false,
+		},
+		HostnameWhiteList: []string{},
+		ListenOn:          ":8080",
+		MasterSecret:      "changeme",
+		DisableSecurity:   false,
+		Captcha: CaptchaConfig{
+			Mode: CaptchaDisabled,
+		},
+	}
+	if _, err := os.Stat(configFileName); os.IsNotExist(err) {
+		return config, nil
+	}
+	dat, err := ioutil.ReadFile(configFileName)
+	if err != nil {
+		return nil, err
+	}
+	err = yaml.Unmarshal(dat, config)
+	if err != nil {
+		return nil, err
+	}
+	return config, nil
+}
+
+func (c Config) IsHostNameValid(hostname string) bool {
+	if c.HostnameWhiteList == nil {
+		return true
+	}
+	if len(c.HostnameWhiteList) == 0 {
+		return true
+	}
+	for _, v := range c.HostnameWhiteList {
+		if v == hostname {
+			return true
+		}
+	}
+	return false
+}