Introduce DISABLE_INSECURE_FEATURES to disable insecure command executions (#1)

* introduce DISABLE_INSECURE_FEATURES to disable insecure executions

Signed-off-by: Quan TRAN <account@itscaro.me>

* disable remote sources when DISABLE_INSECURE_FEATURES is set to "true"

Signed-off-by: Quan TRAN <account@itscaro.me>

* refactor envvar package

Signed-off-by: Quan TRAN <account@itscaro.me>

* (test) fix test fixtures

Signed-off-by: Quan TRAN <account@itscaro.me>

* use absolute path to avoid unit test failure

Signed-off-by: Quan TRAN <account@itscaro.me>

* Fix conflicts

Co-authored-by: Yusuke Kuoka <ykuoka@gmail.com>

pkg/app/app.go

@@ -667,13 +667,12 @@ func (a *App) visitStateFiles(fileOrDir string, opts LoadOpts, do func(string, s
 
 		a.Logger.Debugf("processing file \"%s\" in directory \"%s\"", file, dir)
 
-		err := a.within(dir, func() error {
-			absd, err := a.abs(dir)
-			if err != nil {
-				return err
-			}
-
-			return do(file, absd)
+		absd, errAbsDir := a.abs(dir)
+		if errAbsDir != nil {
+			return errAbsDir
+		}
+		err := a.within(absd, func() error {
+			return do(file, dir)
 		})
 		if err != nil {
 			return appError(fmt.Sprintf("in %s/%s", dir, file), err)

pkg/app/app_apply_nokubectx_test.go

@@ -211,6 +211,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -292,6 +293,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -343,6 +345,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -418,6 +421,7 @@ UPDATED RELEASES:
 NAME               CHART           VERSION
 external-secrets   incubator/raw     3.1.0
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -465,6 +469,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -551,6 +556,7 @@ kubernetes-external-secrets   incubator/raw
 external-secrets              incubator/raw          
 my-release                    incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -599,6 +605,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -680,6 +687,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -733,6 +741,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -826,6 +835,7 @@ my-release         incubator/raw
 DELETED RELEASES:
 NAME
 kubernetes-external-secrets
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -877,6 +887,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -960,6 +971,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -998,6 +1010,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1060,6 +1073,7 @@ second-pass rendering result of "helmfile.yaml.part.0":
 merged environment: &{default map[] map[]}
 0 release(s) matching app=test_non_existent found in helmfile.yaml
 
+changing working directory back to "/path/to"
 `,
 		})
 	})

pkg/app/app_apply_test.go

@@ -213,6 +213,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -294,6 +295,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -345,6 +347,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -420,6 +423,7 @@ UPDATED RELEASES:
 NAME               CHART           VERSION
 external-secrets   incubator/raw     3.1.0
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -467,6 +471,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -553,6 +558,7 @@ kubernetes-external-secrets   incubator/raw
 external-secrets              incubator/raw          
 my-release                    incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -601,6 +607,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -682,6 +689,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -735,6 +743,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -828,6 +837,7 @@ my-release         incubator/raw
 DELETED RELEASES:
 NAME
 kubernetes-external-secrets
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -879,6 +889,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -962,6 +973,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -1006,6 +1018,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1084,6 +1097,7 @@ serviceC   my/chart
 serviceB   my/chart          
 serviceA   my/chart          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -1122,6 +1136,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1184,6 +1199,7 @@ second-pass rendering result of "helmfile.yaml.part.0":
 merged environment: &{default map[] map[]}
 0 release(s) matching app=test_non_existent found in helmfile.yaml
 
+changing working directory back to "/path/to"
 `,
 		})
 	})

pkg/app/app_sync_test.go

@@ -205,6 +205,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -286,6 +287,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -328,6 +330,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -414,6 +417,7 @@ kubernetes-external-secrets   incubator/raw
 external-secrets              incubator/raw          
 my-release                    incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -452,6 +456,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -530,6 +535,7 @@ serviceC   my/chart
 serviceB   my/chart          
 serviceA   my/chart          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -580,6 +586,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -673,6 +680,7 @@ my-release         incubator/raw
 DELETED RELEASES:
 NAME
 kubernetes-external-secrets
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -721,6 +729,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -804,6 +813,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -842,6 +852,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -904,6 +915,7 @@ second-pass rendering result of "helmfile.yaml.part.0":
 merged environment: &{default map[] map[]}
 0 release(s) matching app=test_non_existent found in helmfile.yaml
 
+changing working directory back to "/path/to"
 `,
 		})
 	})

pkg/app/app_test.go

@@ -15,6 +15,7 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
+	"github.com/helmfile/helmfile/pkg/envvar"
 
 	"github.com/helmfile/helmfile/pkg/remote"
 	"github.com/helmfile/helmfile/pkg/testutil"
@@ -636,8 +637,8 @@ releases:
 		{label: "name=doesnotexists", expectedReleases: []string{"zipkin", "prometheus", "grafana", "bar", "bar", "grafana", "postgresql"}, expectErr: false},
 	}
 
-	os.Setenv(ExperimentalEnvVar, ExperimentalSelectorExplicit)
-	defer os.Unsetenv(ExperimentalEnvVar)
+	os.Setenv(envvar.Experimental, ExperimentalSelectorExplicit)
+	defer os.Unsetenv(envvar.Experimental)
 
 	runFilterSubHelmFilesTests(desiredTestcases, files, t, "2nd EmbeddedSelectors")
 
@@ -686,8 +687,8 @@ releases:
 		{label: "name!=grafana", expectedReleases: []string{"grafana", "zipkin", "mongodb"}, expectErr: false},
 	}
 
-	os.Setenv(ExperimentalEnvVar, ExperimentalSelectorExplicit)
-	defer os.Unsetenv(ExperimentalEnvVar)
+	os.Setenv(envvar.Experimental, ExperimentalSelectorExplicit)
+	defer os.Unsetenv(envvar.Experimental)
 
 	runFilterSubHelmFilesTests(desiredTestcases, files, t, "2nd 3leveldeep")
 
@@ -748,8 +749,8 @@ releases:
 		{label: "select!=foo", expectedReleases: []string{"grafana", "prometheus", "zipkin", "prometheus", "zipkin", "mongodb"}, expectErr: false},
 	}
 
-	os.Setenv(ExperimentalEnvVar, ExperimentalSelectorExplicit)
-	defer os.Unsetenv(ExperimentalEnvVar)
+	os.Setenv(envvar.Experimental, ExperimentalSelectorExplicit)
+	defer os.Unsetenv(envvar.Experimental)
 
 	runFilterSubHelmFilesTests(desiredTestcases, files, t, "2nd inherits")
 
@@ -867,7 +868,7 @@ tillerNs: INLINE_TILLER_NS_2
 		Namespace:           "",
 		Selectors:           []string{},
 		Env:                 "default",
-		FileOrDir:           "helmfile.yaml",
+		FileOrDir:           "/path/to/helmfile.yaml",
 	}, files)
 
 	expectNoCallsToHelm(app)
@@ -2871,6 +2872,7 @@ backend-v1 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	backend-3.1.0	3.1.0
 				{Name: "frontend-v1", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -3049,6 +3051,7 @@ DELETED RELEASES:
 NAME
 frontend-v1
 backend-v1
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -3114,6 +3117,7 @@ releases:
 			deleted:     []exectest.Release{},
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -3172,6 +3176,7 @@ baz    stable/mychart3
 bar    stable/mychart2          
 foo    stable/mychart1          
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -3218,6 +3223,7 @@ baz 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	mychart3-3.1.0	3.1.0      	defau
 			deleted:     []exectest.Release{},
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -3280,6 +3286,7 @@ baz    stable/mychart3     3.1.0
 bar    stable/mychart2     3.1.0
 foo    stable/mychart1          
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -3326,6 +3333,7 @@ baz 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	mychart3-3.1.0	3.1.0      	defau
 			deleted:     []exectest.Release{},
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -3388,6 +3396,7 @@ baz    stable/mychart3     3.1.0
 bar    stable/mychart2     3.1.0
 foo    stable/mychart1          
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -3594,6 +3603,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -3653,6 +3663,7 @@ NAME   CHART             VERSION
 foo    stable/mychart1          
 bar    stable/mychart2          
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -3911,6 +3922,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -3992,6 +4004,7 @@ NAME               CHART           VERSION
 external-secrets   incubator/raw          
 my-release         incubator/raw          
 
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -4038,6 +4051,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -4101,6 +4115,7 @@ merged environment: &{default map[] map[]}
 2 release(s) matching app=test found in helmfile.yaml
 
 err: release "default/default/external-secrets" depends on "default/kube-system/kubernetes-external-secrets" which does not match the selectors. Please add a selector like "--selector name=kubernetes-external-secrets", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -4140,6 +4155,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -4202,6 +4218,7 @@ second-pass rendering result of "helmfile.yaml.part.0":
 merged environment: &{default map[] map[]}
 0 release(s) matching app=test_non_existent found in helmfile.yaml
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -4233,6 +4250,7 @@ releases:
 			concurrency: 1,
 			error:       `in ./helmfile.yaml: release "default//foo" depends on "default/ns1/bar" which does not match the selectors. Please add a selector like "--selector name=bar", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies`,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -4268,6 +4286,7 @@ merged environment: &{default map[] map[]}
 1 release(s) matching name=foo found in helmfile.yaml
 
 err: release "default//foo" depends on "default/ns1/bar" which does not match the selectors. Please add a selector like "--selector name=bar", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -4295,6 +4314,7 @@ releases:
 			concurrency: 1,
 			error:       "in ./helmfile.yaml: release(s) \"default//foo\" depend(s) on an undefined release \"default/ns1/bar\". Perhaps you made a typo in \"needs\" or forgot defining a release named \"bar\" with appropriate \"namespace\" and \"kubeContext\"?",
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -4330,6 +4350,7 @@ merged environment: &{default map[] map[]}
 2 release(s) found in helmfile.yaml
 
 err: release(s) "default//foo" depend(s) on an undefined release "default/ns1/bar". Perhaps you made a typo in "needs" or forgot defining a release named "bar" with appropriate "namespace" and "kubeContext"?
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -4361,6 +4382,7 @@ releases:
 			concurrency: 1,
 			error:       "in ./helmfile.yaml: found 2 duplicate releases with ID \"default//foo\"",
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -4402,6 +4424,7 @@ second-pass rendering result of "helmfile.yaml.part.0":
 
 merged environment: &{default map[] map[]}
 err: found 2 duplicate releases with ID "default//foo"
+changing working directory back to "/path/to"
 `,
 		},
 	}
@@ -4560,6 +4583,7 @@ releases:
 				"/path/to/charts/example/Chart.yaml": `foo: FOO`,
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -4591,6 +4615,7 @@ merged environment: &{default map[] map[]}
 There are no repositories defined in your helmfile.yaml.
 This means helmfile cannot update your dependencies or create a lock file.
 See https://github.com/roboll/helmfile/issues/878 for more information.
+changing working directory back to "/path/to"
 `,
 			charts: []string{"/path/to/charts/example"},
 		},

pkg/app/constants.go

@@ -3,20 +3,21 @@ package app
 import (
 	"os"
 	"strings"
+
+	"github.com/helmfile/helmfile/pkg/envvar"
 )
 
 const (
 	DefaultHelmfile              = "helmfile.yaml"
 	DeprecatedHelmfile           = "charts.yaml"
 	DefaultHelmfileDirectory     = "helmfile.d"
-	ExperimentalEnvVar           = "HELMFILE_EXPERIMENTAL"         // environment variable for experimental features, expecting "true" lower case
 	ExperimentalSelectorExplicit = "explicit-selector-inheritance" // value to remove default selector inheritance to sub-helmfiles and use the explicit one
 )
 
 func experimentalModeEnabled() bool {
-	return os.Getenv(ExperimentalEnvVar) == "true"
+	return os.Getenv(envvar.Experimental) == "true"
 }
 
 func isExplicitSelectorInheritanceEnabled() bool {
-	return experimentalModeEnabled() || strings.Contains(os.Getenv(ExperimentalEnvVar), ExperimentalSelectorExplicit)
+	return experimentalModeEnabled() || strings.Contains(os.Getenv(envvar.Experimental), ExperimentalSelectorExplicit)
 }

pkg/app/constants_test.go

@@ -5,49 +5,50 @@ import (
 	"os"
 	"testing"
 
+	"github.com/helmfile/helmfile/pkg/envvar"
 	"github.com/stretchr/testify/require"
 )
 
 // TestIsExplicitSelectorInheritanceEnabled tests the isExplicitSelectorInheritanceEnabled function
 func TestIsExplicitSelectorInheritanceEnabled(t *testing.T) {
 	//env var ExperimentalEnvVar is not set
-	require.Empty(t, os.Getenv(ExperimentalEnvVar))
+	require.Empty(t, os.Getenv(envvar.Experimental))
 	require.False(t, isExplicitSelectorInheritanceEnabled())
 
 	//check for env var ExperimentalEnvVar set to true
-	os.Setenv(ExperimentalEnvVar, "true")
+	os.Setenv(envvar.Experimental, "true")
 	require.True(t, isExplicitSelectorInheritanceEnabled())
 
 	//check for env var ExperimentalEnvVar set to anything
-	os.Setenv(ExperimentalEnvVar, "anything")
+	os.Setenv(envvar.Experimental, "anything")
 	require.False(t, isExplicitSelectorInheritanceEnabled())
 
 	//check for env var ExperimentalEnvVar set to ExperimentalSelectorExplicit
-	os.Setenv(ExperimentalEnvVar, ExperimentalSelectorExplicit)
+	os.Setenv(envvar.Experimental, ExperimentalSelectorExplicit)
 	require.True(t, isExplicitSelectorInheritanceEnabled())
 
 	// check for env var ExperimentalEnvVar set to a string that contains ExperimentalSelectorExplicit and ExperimentalEnvVar set to true
-	os.Setenv(ExperimentalEnvVar, fmt.Sprintf("%s-%s-%s", "a", ExperimentalSelectorExplicit, "b"))
+	os.Setenv(envvar.Experimental, fmt.Sprintf("%s-%s-%s", "a", ExperimentalSelectorExplicit, "b"))
 	require.True(t, isExplicitSelectorInheritanceEnabled())
 
 	// reset env var
-	defer os.Unsetenv(ExperimentalEnvVar)
+	defer os.Unsetenv(envvar.Experimental)
 }
 
 // TestExperimentalModeEnabled tests the experimentalModeEnabled function
 func TestExperimentalModeEnabled(t *testing.T) {
 	//env var ExperimentalEnvVar is not set
-	require.Empty(t, os.Getenv(ExperimentalEnvVar))
+	require.Empty(t, os.Getenv(envvar.Experimental))
 	require.False(t, experimentalModeEnabled())
 
 	//check for env var ExperimentalEnvVar set to anything
-	os.Setenv(ExperimentalEnvVar, "anything")
+	os.Setenv(envvar.Experimental, "anything")
 	require.False(t, experimentalModeEnabled())
 
 	//check for env var ExperimentalEnvVar set to true
-	os.Setenv(ExperimentalEnvVar, "true")
+	os.Setenv(envvar.Experimental, "true")
 	require.True(t, experimentalModeEnabled())
 
 	// reset env var
-	defer os.Unsetenv(ExperimentalEnvVar)
+	defer os.Unsetenv(envvar.Experimental)
 }

pkg/app/destroy_nokubectx_test.go

@@ -281,6 +281,7 @@ anotherbackend 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	anotherbackend-3.1.0
 				{Name: "logging", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -441,6 +442,7 @@ servicemesh
 database
 front-proxy
 logging
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -487,6 +489,7 @@ anotherbackend 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	anotherbackend-3.1.0
 				{Name: "logging", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -621,6 +624,7 @@ release "logging" processed
 DELETED RELEASES:
 NAME
 logging
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -642,6 +646,7 @@ logging
 				{Name: "frontend-v1", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -690,6 +695,7 @@ DELETED RELEASES:
 NAME
 frontend-v1
 backend-v1
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -712,6 +718,7 @@ backend-v1
 				{Name: "frontend-v1", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -760,6 +767,7 @@ DELETED RELEASES:
 NAME
 frontend-v1
 backend-v1
+changing working directory back to "/path/to"
 `,
 		})
 	})

pkg/app/destroy_test.go

@@ -321,6 +321,7 @@ anotherbackend 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	anotherbackend-3.1.0
 				{Name: "logging", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -481,6 +482,7 @@ servicemesh
 database
 front-proxy
 logging
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -527,6 +529,7 @@ anotherbackend 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	anotherbackend-3.1.0
 				{Name: "logging", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -661,6 +664,7 @@ release "logging" processed
 DELETED RELEASES:
 NAME
 logging
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -682,6 +686,7 @@ logging
 				{Name: "frontend-v1", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -730,6 +735,7 @@ DELETED RELEASES:
 NAME
 frontend-v1
 backend-v1
+changing working directory back to "/path/to"
 `,
 		})
 	})
@@ -752,6 +758,7 @@ backend-v1
 				{Name: "frontend-v1", Flags: []string{}},
 			},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -800,6 +807,7 @@ DELETED RELEASES:
 NAME
 frontend-v1
 backend-v1
+changing working directory back to "/path/to"
 `,
 		})
 	})

pkg/app/diff_nokubectx_test.go

@@ -128,6 +128,7 @@ backend-v1 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	backend-3.1.0	3.1.0
 			upgraded:    []exectest.Release{},
 			deleted:     []exectest.Release{},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -263,6 +264,7 @@ Affected releases are:
   logging (charts/fluent-bit) UPDATED
   servicemesh (charts/istio) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -328,6 +330,7 @@ releases:
 			deleted:     []exectest.Release{},
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -369,6 +372,7 @@ Affected releases are:
   baz (mychart3) UPDATED
   foo (mychart1) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -567,6 +571,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -611,6 +616,7 @@ Affected releases are:
   bar (mychart2) UPDATED
   foo (mychart1) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -639,6 +645,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -679,6 +686,7 @@ Affected releases are:
   bar (mychart2) UPDATED
   foo (mychart1) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -924,6 +932,7 @@ releases:
 			concurrency: 1,
 			error:       "Identified at least one change",
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -990,6 +999,7 @@ Affected releases are:
   external-secrets (incubator/raw) UPDATED
   my-release (incubator/raw) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -1033,6 +1043,7 @@ releases:
 			concurrency: 1,
 			error:       `in ./helmfile.yaml: release "default/external-secrets" depends on "kube-system/kubernetes-external-secrets" which does not match the selectors. Please add a selector like "--selector name=kubernetes-external-secrets", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies`,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1096,6 +1107,7 @@ merged environment: &{default map[] map[]}
 2 release(s) matching app=test found in helmfile.yaml
 
 err: release "default/external-secrets" depends on "kube-system/kubernetes-external-secrets" which does not match the selectors. Please add a selector like "--selector name=kubernetes-external-secrets", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -1136,6 +1148,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1198,6 +1211,7 @@ second-pass rendering result of "helmfile.yaml.part.0":
 merged environment: &{default map[] map[]}
 0 release(s) matching app=test_non_existent found in helmfile.yaml
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -1229,6 +1243,7 @@ releases:
 			concurrency: 1,
 			error:       `in ./helmfile.yaml: release(s) "foo" depend(s) on an undefined release "bar". Perhaps you made a typo in "needs" or forgot defining a release named "bar" with appropriate "namespace" and "kubeContext"?`,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1264,6 +1279,7 @@ merged environment: &{default map[] map[]}
 2 release(s) found in helmfile.yaml
 
 err: release(s) "foo" depend(s) on an undefined release "bar". Perhaps you made a typo in "needs" or forgot defining a release named "bar" with appropriate "namespace" and "kubeContext"?
+changing working directory back to "/path/to"
 `,
 		},
 	}

pkg/app/diff_test.go

@@ -247,6 +247,7 @@ backend-v1 	4       	Fri Nov  1 08:40:07 2019	DEPLOYED	backend-3.1.0	3.1.0
 			upgraded:    []exectest.Release{},
 			deleted:     []exectest.Release{},
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -382,6 +383,7 @@ Affected releases are:
   logging (charts/fluent-bit) UPDATED
   servicemesh (charts/istio) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -447,6 +449,7 @@ releases:
 			deleted:     []exectest.Release{},
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -488,6 +491,7 @@ Affected releases are:
   baz (mychart3) UPDATED
   foo (mychart1) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -686,6 +690,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -730,6 +735,7 @@ Affected releases are:
   bar (mychart2) UPDATED
   foo (mychart1) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -758,6 +764,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -798,6 +805,7 @@ Affected releases are:
   bar (mychart2) UPDATED
   foo (mychart1) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -1043,6 +1051,7 @@ releases:
 			concurrency: 1,
 			error:       "Identified at least one change",
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1109,6 +1118,7 @@ Affected releases are:
   external-secrets (incubator/raw) UPDATED
   my-release (incubator/raw) UPDATED
 
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -1152,6 +1162,7 @@ releases:
 			concurrency: 1,
 			error:       `in ./helmfile.yaml: release "default/default/external-secrets" depends on "default/kube-system/kubernetes-external-secrets" which does not match the selectors. Please add a selector like "--selector name=kubernetes-external-secrets", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies`,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1215,6 +1226,7 @@ merged environment: &{default map[] map[]}
 2 release(s) matching app=test found in helmfile.yaml
 
 err: release "default/default/external-secrets" depends on "default/kube-system/kubernetes-external-secrets" which does not match the selectors. Please add a selector like "--selector name=kubernetes-external-secrets", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -1255,6 +1267,7 @@ releases:
 			// as we check for log output, set concurrency to 1 to avoid non-deterministic test result
 			concurrency: 1,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1317,6 +1330,7 @@ second-pass rendering result of "helmfile.yaml.part.0":
 merged environment: &{default map[] map[]}
 0 release(s) matching app=test_non_existent found in helmfile.yaml
 
+changing working directory back to "/path/to"
 `,
 		},
 		//
@@ -1349,6 +1363,7 @@ releases:
 			concurrency: 1,
 			error:       `in ./helmfile.yaml: release "default//foo" depends on "default//bar" which does not match the selectors. Please add a selector like "--selector name=bar", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies`,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1382,6 +1397,7 @@ merged environment: &{default map[] map[]}
 1 release(s) matching name=foo found in helmfile.yaml
 
 err: release "default//foo" depends on "default//bar" which does not match the selectors. Please add a selector like "--selector name=bar", or indicate whether to skip (--skip-needs) or include (--include-needs) these dependencies
+changing working directory back to "/path/to"
 `,
 		},
 		{
@@ -1410,6 +1426,7 @@ releases:
 			concurrency: 1,
 			error:       `in ./helmfile.yaml: release(s) "default//foo" depend(s) on an undefined release "default//bar". Perhaps you made a typo in "needs" or forgot defining a release named "bar" with appropriate "namespace" and "kubeContext"?`,
 			log: `processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -1445,6 +1462,7 @@ merged environment: &{default map[] map[]}
 2 release(s) found in helmfile.yaml
 
 err: release(s) "default//foo" depend(s) on an undefined release "default//bar". Perhaps you made a typo in "needs" or forgot defining a release named "bar" with appropriate "namespace" and "kubeContext"?
+changing working directory back to "/path/to"
 `,
 		},
 	}

pkg/app/testdata/testapply_2/deduplicate_by_--selector/log

@@ -1,4 +1,5 @@
 processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -63,3 +64,4 @@ UPDATED RELEASES:
 NAME   CHART           VERSION
 foo    incubator/raw          
 
+changing working directory back to "/path/to"

pkg/app/testdata/testapply_2/select_non_existant_release_with_--allow-no-matching-release/log

@@ -1,4 +1,5 @@
 processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -41,3 +42,4 @@ second-pass rendering result of "helmfile.yaml.part.0":
 merged environment: &{default map[] map[]}
 0 release(s) matching app=foo found in helmfile.yaml
 
+changing working directory back to "/path/to"

pkg/app/testdata/testapply_2/select_single_release_from_helmfile_with_two_duplicates/log

@@ -1,4 +1,5 @@
 processing file "helmfile.yaml" in directory "."
+changing working directory to "/path/to"
 first-pass rendering starting for "helmfile.yaml.part.0": inherited=&{default map[] map[]}, overrode=<nil>
 first-pass uses: &{default map[] map[]}
 first-pass rendering output of "helmfile.yaml.part.0":
@@ -67,3 +68,4 @@ UPDATED RELEASES:
 NAME   CHART           VERSION
 foo    incubator/raw          
 
+changing working directory back to "/path/to"

pkg/envvar/const.go

@@ -0,0 +1,8 @@
+package envvar
+
+const DisableInsecureFeatures = "HELMFILE_DISABLE_INSECURE_FEATURES"
+const SkipInsecureTemplateFunctions = "HELMFILE_SKIP_INSECURE_TEMPLATE_FUNCTIONS"
+const Experimental = "HELMFILE_EXPERIMENTAL" // environment variable for experimental features, expecting "true" lower case
+const Environment = "HELMFILE_ENVIRONMENT"
+const TempDir = "HELMFILE_TEMPDIR"
+const Helm3 = "HELMFILE_HELM3"

pkg/helmexec/exec.go

@@ -12,6 +12,7 @@ import (
 	"sync"
 
 	"github.com/Masterminds/semver/v3"
+	"github.com/helmfile/helmfile/pkg/envvar"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 )
@@ -65,7 +66,7 @@ func parseHelmVersion(versionStr string) (semver.Version, error) {
 	}
 
 	// Support explicit helm3 opt-in via environment variable
-	if os.Getenv("HELMFILE_HELM3") != "" && ver.Major() < 3 {
+	if os.Getenv(envvar.Helm3) != "" && ver.Major() < 3 {
 		return *semver.MustParse("v3.0.0"), nil
 	}
 

pkg/helmexec/exec_test.go

@@ -11,6 +11,7 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
+	"github.com/helmfile/helmfile/pkg/envvar"
 
 	"github.com/Masterminds/semver/v3"
 	"go.uber.org/zap"
@@ -794,13 +795,13 @@ func Test_IsHelm3(t *testing.T) {
 		t.Error("helmexec.IsHelm3() - Failed to detect Helm 3")
 	}
 
-	os.Setenv("HELMFILE_HELM3", "1")
+	os.Setenv(envvar.Helm3, "1")
 	helm2Runner = mockRunner{output: []byte("Client: v2.16.0+ge13bc94\n")}
 	helm = New("helm", NewLogger(os.Stdout, "info"), "dev", &helm2Runner)
 	if !helm.IsHelm3() {
-		t.Error("helmexec.IsHelm3() - Helm3 not detected when HELMFILE_HELM3 is set")
+		t.Errorf("helmexec.IsHelm3() - Helm3 not detected when %s is set", envvar.Helm3)
 	}
-	os.Setenv("HELMFILE_HELM3", "")
+	os.Setenv(envvar.Helm3, "")
 }
 
 func Test_GetVersion(t *testing.T) {

pkg/remote/remote.go

@@ -7,15 +7,23 @@ import (
 	neturl "net/url"
 	"os"
 	"path/filepath"
+	"strconv"
 	"strings"
 
 	"github.com/hashicorp/go-getter"
 	"github.com/hashicorp/go-getter/helper/url"
+	"github.com/helmfile/helmfile/pkg/envvar"
 	"go.uber.org/multierr"
 	"go.uber.org/zap"
 	"gopkg.in/yaml.v2"
 )
 
+var disableInsecureFeatures bool
+
+func init() {
+	disableInsecureFeatures, _ = strconv.ParseBool(os.Getenv(envvar.DisableInsecureFeatures))
+}
+
 func CacheDir() string {
 	dir, err := os.UserCacheDir()
 	if err != nil {
@@ -279,6 +287,9 @@ func (g *GoGetter) Get(wd, src, dst string) error {
 }
 
 func NewRemote(logger *zap.SugaredLogger, homeDir string, readFile func(string) ([]byte, error), dirExists func(string) bool, fileExists func(string) bool) *Remote {
+	if disableInsecureFeatures {
+		panic("Remote sources are disabled due to 'DISABLE_INSECURE_FEATURES'")
+	}
 	remote := &Remote{
 		Logger:     logger,
 		Home:       homeDir,

pkg/state/temp.go

@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"github.com/davecgh/go-spew/spew"
+	"github.com/helmfile/helmfile/pkg/envvar"
 	"k8s.io/apimachinery/pkg/util/rand"
 )
 
@@ -32,7 +33,7 @@ func tempValuesFilePath(release *ReleaseSpec, data interface{}) (*string, error)
 		panic(err)
 	}
 
-	workDir := os.Getenv("HELMFILE_TEMPDIR")
+	workDir := os.Getenv(envvar.TempDir)
 	if workDir == "" {
 		workDir, err = os.MkdirTemp(os.TempDir(), "helmfile")
 	} else {

pkg/tmpl/context_funcs.go

@@ -8,16 +8,38 @@ import (
 	"os/exec"
 	"path/filepath"
 	"reflect"
+	"strconv"
 	"strings"
 	"text/template"
 
 	"github.com/ghodss/yaml"
+	"github.com/helmfile/helmfile/pkg/envvar"
 	"github.com/helmfile/helmfile/pkg/helmexec"
 	"golang.org/x/sync/errgroup"
 )
 
 type Values = map[string]interface{}
 
+var DisableInsecureFeaturesErr = DisableInsecureFeaturesError{envvar.DisableInsecureFeatures + " is active, insecure function calls are disabled"}
+
+type DisableInsecureFeaturesError struct {
+	err string
+}
+
+func (e DisableInsecureFeaturesError) Error() string {
+	return e.err
+}
+
+var (
+	disableInsecureFeatures       bool
+	skipInsecureTemplateFunctions bool
+)
+
+func init() {
+	disableInsecureFeatures, _ = strconv.ParseBool(os.Getenv(envvar.DisableInsecureFeatures))
+	skipInsecureTemplateFunctions, _ = strconv.ParseBool(os.Getenv(envvar.SkipInsecureTemplateFunctions))
+}
+
 func (c *Context) createFuncMap() template.FuncMap {
 	funcMap := template.FuncMap{
 		"envExec":          c.EnvExec,
@@ -36,7 +58,7 @@ func (c *Context) createFuncMap() template.FuncMap {
 		"fetchSecretValue": fetchSecretValue,
 		"expandSecretRefs": fetchSecretValues,
 	}
-	if c.preRender {
+	if c.preRender || skipInsecureTemplateFunctions {
 		// disable potential side-effect template calls
 		funcMap["exec"] = func(string, []interface{}, ...string) (string, error) {
 			return "", nil
@@ -48,6 +70,15 @@ func (c *Context) createFuncMap() template.FuncMap {
 			return "", nil
 		}
 	}
+	if disableInsecureFeatures {
+		// disable insecure functions
+		funcMap["exec"] = func(string, []interface{}, ...string) (string, error) {
+			return "", DisableInsecureFeaturesErr
+		}
+		funcMap["readFile"] = func(string) (string, error) {
+			return "", DisableInsecureFeaturesErr
+		}
+	}
 
 	return funcMap
 }

pkg/tmpl/context_funcs_test.go

@@ -12,6 +12,57 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+func TestCreateFuncMap(t *testing.T) {
+	currentVal := disableInsecureFeatures
+
+	{
+		disableInsecureFeatures = false
+		ctx := &Context{basePath: "."}
+		funcMaps := ctx.createFuncMap()
+		args := make([]interface{}, 0)
+		outputExec, _ := funcMaps["exec"].(func(command string, args []interface{}, inputs ...string) (string, error))("ls", args)
+		require.Contains(t, outputExec, "context.go")
+	}
+
+	disableInsecureFeatures = currentVal
+}
+
+func TestCreateFuncMap_DisabledInsecureFeatures(t *testing.T) {
+	currentVal := disableInsecureFeatures
+
+	{
+		disableInsecureFeatures = true
+		ctx := &Context{basePath: "."}
+		funcMaps := ctx.createFuncMap()
+		args := make([]interface{}, 0)
+		_, err1 := funcMaps["exec"].(func(command string, args []interface{}, inputs ...string) (string, error))("ls", args)
+		require.ErrorIs(t, err1, DisableInsecureFeaturesErr)
+		_, err2 := funcMaps["readFile"].(func(filename string) (string, error))("context_funcs_test.go")
+		require.ErrorIs(t, err2, DisableInsecureFeaturesErr)
+	}
+
+	disableInsecureFeatures = currentVal
+}
+
+func TestCreateFuncMap_SkipInsecureTemplateFunctions(t *testing.T) {
+	currentVal := skipInsecureTemplateFunctions
+
+	{
+		skipInsecureTemplateFunctions = true
+		ctx := &Context{basePath: "."}
+		funcMaps := ctx.createFuncMap()
+		args := make([]interface{}, 0)
+		actual1, err1 := funcMaps["exec"].(func(command string, args []interface{}, inputs ...string) (string, error))("ls", args)
+		require.Equal(t, "", actual1)
+		require.ErrorIs(t, err1, nil)
+		actual2, err2 := funcMaps["readFile"].(func(filename string) (string, error))("context_funcs_test.go")
+		require.Equal(t, "", actual2)
+		require.ErrorIs(t, err2, nil)
+	}
+
+	skipInsecureTemplateFunctions = currentVal
+}
+
 func TestReadFile(t *testing.T) {
 	expected := `foo:
   bar: BAR