optional public IP fetching

2026-05-14 19:56:50 -05:00
parent 9c78483744
commit da3bec8de1
11 changed files with 85 additions and 1 deletions
@@ -0,0 +1,39 @@
+//go:build fetch_public_ip
+
+package config
+
+import (
+	"encoding/json"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"time"
+)
+
+func FetchPublicIPAddress() string {
+	client := &http.Client{Timeout: 5 * time.Second}
+	resp, err := client.Get("https://api.ipify.org?format=json")
+	if err != nil {
+		return ""
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return ""
+	}
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 256))
+	if err != nil {
+		return ""
+	}
+	var payload struct {
+		IP string `json:"ip"`
+	}
+	if err := json.Unmarshal(body, &payload); err != nil {
+		return ""
+	}
+	ip := strings.TrimSpace(payload.IP)
+	if net.ParseIP(ip) == nil {
+		return ""
+	}
+	return ip
+}