platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/shell.go

@@ -1,72 +1,18 @@
 package app
 
 import (
-	"context"
-	"errors"
-	"fmt"
-	"os/exec"
-	"strings"
+	syscmdpkg "selective-vpn-api/app/syscmd"
 	"time"
 )
 
-// ---------------------------------------------------------------------
-// низкоуровневые helpers
-// ---------------------------------------------------------------------
-
-// EN: Low-level command execution adapters with timeout handling and small
-// EN: policy-route verification helper used by higher-level handlers.
-// RU: Низкоуровневые адаптеры запуска команд с таймаутами и вспомогательной
-// RU: проверкой policy-route, используемой верхнеуровневыми обработчиками.
-
 func runCommand(name string, args ...string) (string, string, int, error) {
-	return runCommandTimeout(60*time.Second, name, args...)
+	return syscmdpkg.RunCommand(name, args...)
 }
 
-// ---------------------------------------------------------------------
-// policy route check
-// ---------------------------------------------------------------------
-
 func checkPolicyRoute(iface, table string) (bool, error) {
-	stdout, _, exitCode, err := runCommand("ip", "route", "show", "table", table)
-	if exitCode != 0 {
-		if err == nil {
-			err = fmt.Errorf("ip route show exited with %d", exitCode)
-		}
-		return false, err
-	}
-	want := fmt.Sprintf("default dev %s", iface)
-	for _, line := range strings.Split(stdout, "\n") {
-		line = strings.TrimSpace(line)
-		if strings.HasPrefix(line, want) {
-			return true, nil
-		}
-	}
-	return false, nil
+	return syscmdpkg.CheckPolicyRoute(iface, table)
 }
 
-// ---------------------------------------------------------------------
-// command timeout helper
-// ---------------------------------------------------------------------
-
 func runCommandTimeout(timeout time.Duration, name string, args ...string) (string, string, int, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), timeout)
-	defer cancel()
-
-	cmd := exec.CommandContext(ctx, name, args...)
-	out, err := cmd.CombinedOutput()
-	stdout := string(out)
-	stderr := stdout
-
-	exitCode := 0
-	if err != nil {
-		if ee, ok := err.(*exec.ExitError); ok {
-			exitCode = ee.ExitCode()
-		} else if errors.Is(err, context.DeadlineExceeded) {
-			exitCode = -1
-			err = fmt.Errorf("command timeout: %w", err)
-		} else {
-			exitCode = -1
-		}
-	}
-	return stdout, stderr, exitCode, err
+	return syscmdpkg.RunCommandTimeout(timeout, name, args...)
 }