generate a profile file if necessary

plugin.go

@@ -58,8 +58,17 @@ type (
 
 // Exec executes the plugin
 func (p Plugin) Exec() error {
+
+	if len(os.Getenv("AWS_ACCESS_KEY_ID")) > 0 {
+		profileErr := installProfile(os.Getenv("AWS_PROFILE"), os.Getenv("AWS_ACCESS_KEY_ID"), os.Getenv("AWS_SECRET_ACCESS_KEY"))
+
+		if profileErr != nil {
+			return profileErr
+		}
+	}
 	// Install specified version of terraform
 	if p.Terraform.Version != "" {
+
 		err := installTerraform(p.Terraform.Version)
 
 		if err != nil {

terraform.go

@@ -4,6 +4,7 @@ import (
 	"archive/zip"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -16,6 +17,13 @@ type (
 	}
 )
 
+func installProfile(profileName string, profileKey string, profileSecret string) error {
+	os.Mkdir(os.Getenv("HOME")+"/.aws", 0700)
+	myconf := []byte("[" + profileName + "]\naws_access_key_id = " + profileKey + "\naws_secret_access_key = " + profileSecret + "\n")
+	err := ioutil.WriteFile(os.Getenv("HOME")+"/.aws/credentials", myconf, 0644)
+	return err
+}
+
 func installTerraform(version string) error {
 	err := downloadTerraform(version)
 	if err != nil {