Handle permission issue on pki health-check tune checkers (#19276)

* Handle permission issue on pki health-check tune checkers

 - Prior to this fix, if the end-user's Vault token did not have permission to the
   mount's tune api, we would return as if the tunable params had not been set.
 - Now check to see if we encountered a permission issue and report that back to
   the end-user like the other checks do.

changelog/19276.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+cli/pki: Properly report permission issues within health-check mount tune checks
+```

command/healthcheck/pki_allow_if_modified_since.go

@@ -12,6 +12,7 @@ type AllowIfModifiedSince struct {
 	UnsupportedVersion bool
 
 	TuneData map[string]interface{}
+	Fetcher  *PathFetch
 }
 
 func NewAllowIfModifiedSinceCheck() Check {
@@ -42,15 +43,16 @@ func (h *AllowIfModifiedSince) LoadConfig(config map[string]interface{}) error {
 }
 
 func (h *AllowIfModifiedSince) FetchResources(e *Executor) error {
-	exit, _, data, err := fetchMountTune(e, func() {
+	var exit bool
+	var err error
+
+	exit, h.Fetcher, h.TuneData, err = fetchMountTune(e, func() {
 		h.UnsupportedVersion = true
 	})
-	if exit {
+
+	if exit || err != nil {
 		return err
 	}
-
-	h.TuneData = data
-
 	return nil
 }
 
@@ -59,11 +61,28 @@ func (h *AllowIfModifiedSince) Evaluate(e *Executor) (results []*Result, err err
 		ret := Result{
 			Status:   ResultInvalidVersion,
 			Endpoint: "/sys/mounts/{{mount}}/tune",
-			Message:  "This health check requires Vault 1.9+ but an earlier version of Vault Server was contacted, preventing this health check from running.",
+			Message:  "This health check requires Vault 1.12+ but an earlier version of Vault Server was contacted, preventing this health check from running.",
 		}
 		return []*Result{&ret}, nil
 	}
 
+	if h.Fetcher.IsSecretPermissionsError() {
+		ret := Result{
+			Status:   ResultInsufficientPermissions,
+			Endpoint: "/sys/mounts/{{mount}}/tune",
+			Message:  "Without this information, this health check is unable to function.",
+		}
+
+		if e.Client.Token() == "" {
+			ret.Message = "No token available so unable read the tune endpoint for this mount. " + ret.Message
+		} else {
+			ret.Message = "This token lacks permission to read the tune endpoint for this mount. " + ret.Message
+		}
+
+		results = append(results, &ret)
+		return
+	}
+
 	req, err := StringList(h.TuneData["passthrough_request_headers"])
 	if err != nil {
 		return nil, fmt.Errorf("unable to parse value from server for passthrough_request_headers: %w", err)
@@ -74,7 +93,7 @@ func (h *AllowIfModifiedSince) Evaluate(e *Executor) (results []*Result, err err
 		return nil, fmt.Errorf("unable to parse value from server for allowed_response_headers: %w", err)
 	}
 
-	var foundIMS bool = false
+	foundIMS := false
 	for _, param := range req {
 		if strings.EqualFold(param, "If-Modified-Since") {
 			foundIMS = true
@@ -82,7 +101,7 @@ func (h *AllowIfModifiedSince) Evaluate(e *Executor) (results []*Result, err err
 		}
 	}
 
-	var foundLM bool = false
+	foundLM := false
 	for _, param := range resp {
 		if strings.EqualFold(param, "Last-Modified") {
 			foundLM = true

command/healthcheck/pki_audit_visibility.go

@@ -58,6 +58,7 @@ type AuditVisibility struct {
 
 	IgnoredParameters map[string]bool
 	TuneData          map[string]interface{}
+	Fetcher           *PathFetch
 }
 
 func NewAuditVisibilityCheck() Check {
@@ -100,29 +101,46 @@ func (h *AuditVisibility) LoadConfig(config map[string]interface{}) error {
 }
 
 func (h *AuditVisibility) FetchResources(e *Executor) error {
-	exit, _, data, err := fetchMountTune(e, func() {
+	var exit bool
+	var err error
+
+	exit, h.Fetcher, h.TuneData, err = fetchMountTune(e, func() {
 		h.UnsupportedVersion = true
 	})
-	if exit {
+
+	if exit || err != nil {
 		return err
 	}
-
-	h.TuneData = data
-
 	return nil
 }
 
 func (h *AuditVisibility) Evaluate(e *Executor) (results []*Result, err error) {
 	if h.UnsupportedVersion {
-		// Shouldn't happen; /certs has been around forever.
 		ret := Result{
 			Status:   ResultInvalidVersion,
-			Endpoint: "/{{mount}}/certs",
-			Message:  "This health check requires Vault 1.11+ but an earlier version of Vault Server was contacted, preventing this health check from running.",
+			Endpoint: "/sys/mounts/{{mount}}/tune",
+			Message:  "This health check requires Vault 1.9+ but an earlier version of Vault Server was contacted, preventing this health check from running.",
 		}
 		return []*Result{&ret}, nil
 	}
 
+	if h.Fetcher.IsSecretPermissionsError() {
+		ret := Result{
+			Status:   ResultInsufficientPermissions,
+			Endpoint: "/sys/mounts/{{mount}}/tune",
+			Message:  "Without this information, this health check is unable to function.",
+		}
+
+		if e.Client.Token() == "" {
+			ret.Message = "No token available so unable read the tune endpoint for this mount. " + ret.Message
+		} else {
+			ret.Message = "This token lacks permission to read the tune endpoint for this mount. " + ret.Message
+		}
+
+		results = append(results, &ret)
+		return
+	}
+
 	sourceMap := map[string][]string{
 		"audit_non_hmac_request_keys":  VisibleReqParams,
 		"audit_non_hmac_response_keys": VisibleRespParams,

command/healthcheck/pki_tidy_last_run.go

@@ -93,7 +93,7 @@ func (h *TidyLastRun) Evaluate(e *Executor) (results []*Result, err error) {
 		ret := Result{
 			Status:   ResultInsufficientPermissions,
 			Endpoint: "/{{mount}}/tidy-status",
-			Message:  "Without this information, this health check is unable tof unction.",
+			Message:  "Without this information, this health check is unable to function.",
 		}
 
 		if e.Client.Token() == "" {

command/healthcheck/shared.go

@@ -35,7 +35,7 @@ func StringList(source interface{}) ([]string, error) {
 func fetchMountTune(e *Executor, versionError func()) (bool, *PathFetch, map[string]interface{}, error) {
 	tuneRet, err := e.FetchIfNotFetched(logical.ReadOperation, "/sys/mounts/{{mount}}/tune")
 	if err != nil {
-		return true, nil, nil, err
+		return true, nil, nil, fmt.Errorf("failed to fetch mount tune information: %w", err)
 	}
 
 	if !tuneRet.IsSecretOK() {
@@ -43,7 +43,7 @@ func fetchMountTune(e *Executor, versionError func()) (bool, *PathFetch, map[str
 			versionError()
 		}
 
-		return true, nil, nil, nil
+		return true, tuneRet, nil, nil
 	}
 
 	var data map[string]interface{} = nil