Initial QSfera import

Server/services/antivirus/pkg/scanners/clamav.go

@@ -0,0 +1,51 @@
+package scanners
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/dutchcoders/go-clamd"
+)
+
+// NewClamAV returns a Scanner talking to clamAV via socket
+func NewClamAV(socket string, timeout time.Duration) (*ClamAV, error) {
+	c := clamd.NewClamd(socket)
+
+	if err := c.Ping(); err != nil {
+		return nil, fmt.Errorf("%w: %w", ErrScannerNotReachable, err)
+	}
+
+	return &ClamAV{
+		clamd:   clamd.NewClamd(socket),
+		timeout: timeout,
+	}, nil
+}
+
+// ClamAV is a Scanner based on clamav
+type ClamAV struct {
+	clamd   *clamd.Clamd
+	timeout time.Duration
+}
+
+// Scan to fulfill Scanner interface
+func (s ClamAV) Scan(in Input) (Result, error) {
+	abort := make(chan bool, 1)
+	defer close(abort)
+
+	ch, err := s.clamd.ScanStream(in.Body, abort)
+	if err != nil {
+		return Result{}, err
+	}
+
+	select {
+	case <-time.After(s.timeout):
+		abort <- true
+		return Result{}, fmt.Errorf("%w: %s", ErrScanTimeout, in.Url)
+	case s := <-ch:
+		return Result{
+			Infected:    s.Status == clamd.RES_FOUND,
+			Description: s.Description,
+			ScanTime:    time.Now(),
+		}, nil
+	}
+}