primeiro commit

2026-09-16 00:18:01 -03:00
commit 1a5a446b5c
10 changed files with 472 additions and 0 deletions
@@ -0,0 +1,59 @@
+// Package updater runs one dynamic DNS update pass across all configured entries.
+package updater
+
+import (
+	"fmt"
+	"log"
+
+	"git.aehoo.net/alphard/he-dydns/internal/config"
+	"git.aehoo.net/alphard/he-dydns/internal/hedns"
+	"git.aehoo.net/alphard/he-dydns/internal/network"
+)
+
+// Run discovers the current address(es) and updates every configured entry.
+// It returns an error only when address discovery itself fails outright;
+// per-entry update failures are logged and aggregated but do not stop other
+// entries from being attempted.
+func Run(cfg *config.Config) error {
+	addrs, err := network.Discover(cfg.Interface)
+	if err != nil {
+		return fmt.Errorf("discovering address: %w", err)
+	}
+
+	if addrs.Empty() {
+		log.Printf("no address found (interface=%q); skipping update", cfg.Interface)
+		return nil
+	}
+
+	if addrs.IPv4 != nil {
+		log.Printf("discovered IPv4 address %s", addrs.IPv4)
+	}
+	if addrs.IPv6 != nil {
+		log.Printf("discovered IPv6 address %s", addrs.IPv6)
+	}
+
+	var failures int
+	for _, entry := range cfg.Entries {
+		if addrs.IPv4 != nil {
+			if err := hedns.Update(entry.Hostname, entry.Token, addrs.IPv4); err != nil {
+				log.Printf("error: %v", err)
+				failures++
+			} else {
+				log.Printf("updated %s -> %s", entry.Hostname, addrs.IPv4)
+			}
+		}
+		if addrs.IPv6 != nil {
+			if err := hedns.Update(entry.Hostname, entry.Token, addrs.IPv6); err != nil {
+				log.Printf("error: %v", err)
+				failures++
+			} else {
+				log.Printf("updated %s -> %s", entry.Hostname, addrs.IPv6)
+			}
+		}
+	}
+
+	if failures > 0 {
+		return fmt.Errorf("%d update(s) failed", failures)
+	}
+	return nil
+}