1 files changed, 78 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/pihole/init.go b/src/go/collectors/go.d.plugin/modules/pihole/init.go
new file mode 100644
index 000000000..982849452
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/pihole/init.go
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package pihole
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
+)
+
+func (p *Pihole) validateConfig() error {
+	if p.URL == "" {
+		return errors.New("url not set")
+	}
+	return nil
+}
+
+func (p *Pihole) initHTTPClient() (*http.Client, error) {
+	return web.NewHTTPClient(p.Client)
+}
+
+func (p *Pihole) getWebPassword() string {
+	// do no read setupVarsPath is password is set in the configuration file
+	if p.Password != "" {
+		return p.Password
+	}
+	if !isLocalHost(p.URL) {
+		p.Info("abort web password auto detection, host is not localhost")
+		return ""
+	}
+
+	p.Infof("starting web password auto detection, reading : %s", p.SetupVarsPath)
+	pass, err := getWebPassword(p.SetupVarsPath)
+	if err != nil {
+		p.Warningf("error during reading '%s' : %v", p.SetupVarsPath, err)
+	}
+
+	return pass
+}
+
+func getWebPassword(path string) (string, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return "", err
+	}
+	defer func() { _ = f.Close() }()
+
+	s := bufio.NewScanner(f)
+	var password string
+
+	for s.Scan() && password == "" {
+		if strings.HasPrefix(s.Text(), "WEBPASSWORD") {
+			parts := strings.Split(s.Text(), "=")
+			if len(parts) != 2 {
+				return "", fmt.Errorf("unparsable line : %s", s.Text())
+			}
+			password = parts[1]
+		}
+	}
+
+	return password, nil
+}
+
+func isLocalHost(u string) bool {
+	if strings.Contains(u, "127.0.0.1") {
+		return true
+	}
+	if strings.Contains(u, "localhost") {
+		return true
+	}
+
+	return false
+}