Interpret exec-host in bash context, fixes #1946 (#1950)

cmd/ddev/cmd/commands.go

@@ -12,7 +12,6 @@ import (
 	"github.com/spf13/cobra"
 	"io/ioutil"
 	"os"
-	osexec "os/exec"
 	"path"
 	"path/filepath"
 	"runtime"
@@ -42,7 +41,7 @@ func addCustomCommands(rootCmd *cobra.Command) error {
 			return err
 		}
 		if runtime.GOOS == "windows" {
-			windowsBashPath := findWindowsBashPath()
+			windowsBashPath := util.FindWindowsBashPath()
 			if windowsBashPath == "" {
 				fmt.Println("Unable to find bash.exe in PATH, not loading custom commands")
 				return nil
@@ -95,7 +94,7 @@ func addCustomCommands(rootCmd *cobra.Command) error {
 func makeHostCmd(app *ddevapp.DdevApp, fullPath, name string) func(*cobra.Command, []string) {
 	var windowsBashPath = ""
 	if runtime.GOOS == "windows" {
-		windowsBashPath = findWindowsBashPath()
+		windowsBashPath = util.FindWindowsBashPath()
 	}
 
 	return func(cmd *cobra.Command, cobraArgs []string) {
@@ -218,18 +217,3 @@ func populateExamplesAndCommands() error {
 	}
 	return nil
 }
-
-// On Windows we'll need the path to bash to execute anything.
-// Returns empty string if not found, path if found
-func findWindowsBashPath() string {
-	windowsBashPath, err := osexec.LookPath(`C:\Program Files\Git\bin\bash.exe`)
-	if err != nil {
-		// This one could come back with the WSL bash, in which case we may have some trouble.
-		windowsBashPath, err = osexec.LookPath("bash.exe")
-		if err != nil {
-			fmt.Println("Not loading custom commands; bash is not in PATH")
-			return ""
-		}
-	}
-	return windowsBashPath
-}

pkg/ddevapp/task.go

@@ -1,10 +1,13 @@
 package ddevapp
 
 import (
+	"bytes"
 	"fmt"
 	"github.com/drud/ddev/pkg/nodeps"
+	"github.com/drud/ddev/pkg/util"
 	"os"
 	"os/exec"
+	"runtime"
 	"strings"
 )
 
@@ -67,16 +70,21 @@ func (c ExecHostTask) Execute() (string, string, error) {
 		return "", "", err
 	}
 
-	execAry := strings.Split(c.exec, " ")
-
-	stderr := []byte{}
-	stdout, err := exec.Command(execAry[0], execAry[1:]...).Output()
-	if exitErr, ok := err.(*exec.ExitError); ok {
-		stderr = exitErr.Stderr
+	bashPath := "bash"
+	if runtime.GOOS == "windows" {
+		bashPath = util.FindWindowsBashPath()
 	}
 
+	cmd := exec.Command(bashPath, "-c", c.exec)
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	err = cmd.Run()
+
 	_ = os.Chdir(cwd)
-	return string(stdout), string(stderr), err
+
+	return stdout.String(), stderr.String(), err
 }
 
 // Execute (ComposerTask) runs a composer command in the web container

pkg/util/utils.go

@@ -1,6 +1,7 @@
 package util
 
 import (
+	"fmt"
 	"github.com/drud/ddev/pkg/nodeps"
 	"math/rand"
 	osexec "os/exec"
@@ -146,3 +147,18 @@ func GetFirstWord(s string) string {
 	arr := strings.Split(s, " ")
 	return arr[0]
 }
+
+// On Windows we'll need the path to bash to execute anything.
+// Returns empty string if not found, path if found
+func FindWindowsBashPath() string {
+	windowsBashPath, err := osexec.LookPath(`C:\Program Files\Git\bin\bash.exe`)
+	if err != nil {
+		// This one could come back with the WSL bash, in which case we may have some trouble.
+		windowsBashPath, err = osexec.LookPath("bash.exe")
+		if err != nil {
+			fmt.Println("Not loading custom commands; bash is not in PATH")
+			return ""
+		}
+	}
+	return windowsBashPath
+}