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eventmanager: allow to filter based on role name

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Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino 2022-12-03 17:47:43 +01:00
parent 2ea43647ed
commit 221a4878aa
No known key found for this signature in database
GPG key ID: 935D2952DEC4EECF
8 changed files with 270 additions and 78 deletions
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100
internal/common/eventmanager.go
View file

@ -262,6 +262,9 @@ func (r *eventRulesContainer) checkProviderEventMatch(conditions dataprovider.Ev
if !checkEventConditionPatterns(params.Name, conditions.Options.Names) {
return false
}
if !checkEventConditionPatterns(params.Role, conditions.Options.RoleNames) {
return false
}
if len(conditions.Options.ProviderObjects) > 0 && !util.Contains(conditions.Options.ProviderObjects, params.ObjectType) {
return false
}
@ -275,6 +278,9 @@ func (r *eventRulesContainer) checkFsEventMatch(conditions dataprovider.EventCon
if !checkEventConditionPatterns(params.Name, conditions.Options.Names) {
return false
}
if !checkEventConditionPatterns(params.Role, conditions.Options.RoleNames) {
return false
}
if !checkEventGroupConditionPatters(params.Groups, conditions.Options.GroupNames) {
return false
}
@ -919,6 +925,19 @@ func checkEventConditionPattern(p dataprovider.ConditionPattern, name string) bo
return matched
}
func checkUserConditionOptions(user *dataprovider.User, conditions *dataprovider.ConditionOptions) bool {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
return false
}
if !checkEventConditionPatterns(user.Role, conditions.RoleNames) {
return false
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
return false
}
return true
}
// checkConditionPatterns returns false if patterns are defined and no match is found
func checkEventConditionPatterns(name string, patterns []dataprovider.ConditionPattern) bool {
if len(patterns) == 0 {
@ -1302,13 +1321,8 @@ func executeDeleteFsRuleAction(deletes []string, replacer *strings.Replacer,
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping fs delete for user %s, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping fs delete for user %s, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping fs delete for user %s, condition options don't match",
user.Username)
continue
}
@ -1366,13 +1380,8 @@ func executeMkdirFsRuleAction(dirs []string, replacer *strings.Replacer,
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping fs mkdir for user %s, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping fs mkdir for user %s, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping fs mkdir for user %s, condition options don't match",
user.Username)
continue
}
@ -1453,13 +1462,8 @@ func executeRenameFsRuleAction(renames []dataprovider.KeyValue, replacer *string
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping fs rename for user %s, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping fs rename for user %s, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping fs rename for user %s, condition options don't match",
user.Username)
continue
}
@ -1559,13 +1563,8 @@ func executeExistFsRuleAction(exist []string, replacer *strings.Replacer, condit
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping fs exist for user %s, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping fs exist for user %s, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping fs exist for user %s, condition options don't match",
user.Username)
continue
}
@ -1599,13 +1598,8 @@ func executeCompressFsRuleAction(c dataprovider.EventActionFsCompress, replacer
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping fs compress for user %s, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping fs compress for user %s, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping fs compress for user %s, condition options don't match",
user.Username)
continue
}
@ -1684,13 +1678,8 @@ func executeUsersQuotaResetRuleAction(conditions dataprovider.ConditionOptions,
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping quota reset for user %q, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping quota reset for user %q, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping quota reset for user %q, condition options don't match",
user.Username)
continue
}
@ -1772,13 +1761,8 @@ func executeTransferQuotaResetRuleAction(conditions dataprovider.ConditionOption
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping scheduled transfer quota reset for user %s, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping scheduled transfer quota reset for user %s, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping scheduled transfer quota reset for user %s, condition options don't match",
user.Username)
continue
}
@ -1843,13 +1827,8 @@ func executeDataRetentionCheckRuleAction(config dataprovider.EventActionDataRete
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping scheduled retention check for user %s, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping scheduled retention check for user %s, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping scheduled retention check for user %s, condition options don't match",
user.Username)
continue
}
@ -1900,13 +1879,8 @@ func executeMetadataCheckRuleAction(conditions dataprovider.ConditionOptions, pa
for _, user := range users {
// if sender is set, the conditions have already been evaluated
if params.sender == "" {
if !checkEventConditionPatterns(user.Username, conditions.Names) {
eventManagerLog(logger.LevelDebug, "skipping metadata check for user %q, name conditions don't match",
user.Username)
continue
}
if !checkEventGroupConditionPatters(user.Groups, conditions.GroupNames) {
eventManagerLog(logger.LevelDebug, "skipping metadata check for user %q, group name conditions don't match",
if !checkUserConditionOptions(&user, &conditions) {
eventManagerLog(logger.LevelDebug, "skipping metadata check for user %q, condition options don't match",
user.Username)
continue
}

71
internal/common/eventmanager_test.go
View file

@ -42,6 +42,7 @@ import (
)
func TestEventRuleMatch(t *testing.T) {
role := "role1"
conditions := dataprovider.EventConditions{
ProviderEvents: []string{"add", "update"},
Options: dataprovider.ConditionOptions{
@ -51,20 +52,28 @@ func TestEventRuleMatch(t *testing.T) {
InverseMatch: true,
},
},
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: role,
},
},
},
}
res := eventManager.checkProviderEventMatch(conditions, EventParams{
Name: "user1",
Role: role,
Event: "add",
})
assert.False(t, res)
res = eventManager.checkProviderEventMatch(conditions, EventParams{
Name: "user2",
Role: role,
Event: "update",
})
assert.True(t, res)
res = eventManager.checkProviderEventMatch(conditions, EventParams{
Name: "user2",
Role: role,
Event: "delete",
})
assert.False(t, res)
@ -72,15 +81,24 @@ func TestEventRuleMatch(t *testing.T) {
res = eventManager.checkProviderEventMatch(conditions, EventParams{
Name: "user2",
Event: "update",
Role: role,
ObjectType: "share",
})
assert.False(t, res)
res = eventManager.checkProviderEventMatch(conditions, EventParams{
Name: "user2",
Event: "update",
Role: role,
ObjectType: "api_key",
})
assert.True(t, res)
res = eventManager.checkProviderEventMatch(conditions, EventParams{
Name: "user2",
Event: "update",
Role: role + "1",
ObjectType: "api_key",
})
assert.False(t, res)
// now test fs events
conditions = dataprovider.EventConditions{
FsEvents: []string{operationUpload, operationDownload},
@ -93,6 +111,12 @@ func TestEventRuleMatch(t *testing.T) {
Pattern: "tester*",
},
},
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: role,
InverseMatch: true,
},
},
FsPaths: []dataprovider.ConditionPattern{
{
Pattern: "*.txt",
@ -116,6 +140,10 @@ func TestEventRuleMatch(t *testing.T) {
params.Event = operationDownload
res = eventManager.checkFsEventMatch(conditions, params)
assert.True(t, res)
params.Role = role
res = eventManager.checkFsEventMatch(conditions, params)
assert.False(t, res)
params.Role = ""
params.Name = "name"
res = eventManager.checkFsEventMatch(conditions, params)
assert.False(t, res)
@ -195,6 +223,49 @@ func TestEventRuleMatch(t *testing.T) {
}
res = eventManager.checkFsEventMatch(conditions, params)
assert.True(t, res)
// check user conditions
user := dataprovider.User{}
user.Username = "u1"
res = checkUserConditionOptions(&user, &dataprovider.ConditionOptions{})
assert.True(t, res)
res = checkUserConditionOptions(&user, &dataprovider.ConditionOptions{
Names: []dataprovider.ConditionPattern{
{
Pattern: "user",
},
},
})
assert.False(t, res)
res = checkUserConditionOptions(&user, &dataprovider.ConditionOptions{
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: role,
},
},
})
assert.False(t, res)
user.Role = role
res = checkUserConditionOptions(&user, &dataprovider.ConditionOptions{
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: role,
},
},
})
assert.True(t, res)
res = checkUserConditionOptions(&user, &dataprovider.ConditionOptions{
GroupNames: []dataprovider.ConditionPattern{
{
Pattern: "group",
},
},
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: role,
},
},
})
assert.False(t, res)
}
func TestEventManager(t *testing.T) {

36
internal/dataprovider/eventrule.go
View file

@ -1021,6 +1021,8 @@ type ConditionOptions struct {
Names []ConditionPattern `json:"names,omitempty"`
// Group names
GroupNames []ConditionPattern `json:"group_names,omitempty"`
// Role names
RoleNames []ConditionPattern `json:"role_names,omitempty"`
// Virtual paths
FsPaths []ConditionPattern `json:"fs_paths,omitempty"`
Protocols []string `json:"protocols,omitempty"`
@ -1040,6 +1042,7 @@ func (f *ConditionOptions) getACopy() ConditionOptions {
return ConditionOptions{
Names: cloneConditionPatterns(f.Names),
GroupNames: cloneConditionPatterns(f.GroupNames),
RoleNames: cloneConditionPatterns(f.RoleNames),
FsPaths: cloneConditionPatterns(f.FsPaths),
Protocols: protocols,
ProviderObjects: providerObjects,
@ -1050,21 +1053,19 @@ func (f *ConditionOptions) getACopy() ConditionOptions {
}
func (f *ConditionOptions) validate() error {
for _, name := range f.Names {
if err := name.validate(); err != nil {
return err
}
if err := validateConditionPatterns(f.Names); err != nil {
return err
}
for _, name := range f.GroupNames {
if err := name.validate(); err != nil {
return err
}
if err := validateConditionPatterns(f.GroupNames); err != nil {
return err
}
for _, fsPath := range f.FsPaths {
if err := fsPath.validate(); err != nil {
return err
}
if err := validateConditionPatterns(f.RoleNames); err != nil {
return err
}
if err := validateConditionPatterns(f.FsPaths); err != nil {
return err
}
for _, p := range f.Protocols {
if !util.Contains(SupportedRuleConditionProtocols, p) {
return util.NewValidationError(fmt.Sprintf("unsupported rule condition protocol: %q", p))
@ -1192,6 +1193,7 @@ func (c *EventConditions) validate(trigger int) error {
c.ProviderEvents = nil
c.Options.Names = nil
c.Options.GroupNames = nil
c.Options.RoleNames = nil
c.Options.FsPaths = nil
c.Options.Protocols = nil
c.Options.MinFileSize = 0
@ -1201,6 +1203,7 @@ func (c *EventConditions) validate(trigger int) error {
c.FsEvents = nil
c.ProviderEvents = nil
c.Options.GroupNames = nil
c.Options.RoleNames = nil
c.Options.FsPaths = nil
c.Options.Protocols = nil
c.Options.MinFileSize = 0
@ -1445,6 +1448,15 @@ func cloneConditionPatterns(patterns []ConditionPattern) []ConditionPattern {
return res
}
func validateConditionPatterns(patterns []ConditionPattern) error {
for _, name := range patterns {
if err := name.validate(); err != nil {
return err
}
}
return nil
}
// Task stores the state for a scheduled task
type Task struct {
Name string `json:"name"`

36
internal/httpd/httpd_test.go
View file

@ -1541,6 +1541,14 @@ func TestActionRuleRelations(t *testing.T) {
Month: "*",
},
},
Options: dataprovider.ConditionOptions{
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: "g*",
InverseMatch: true,
},
},
},
},
Actions: []dataprovider.EventAction{
{
@ -2008,6 +2016,16 @@ func TestEventRuleValidation(t *testing.T) {
_, resp, err = httpdtest.AddEventRule(rule, http.StatusBadRequest)
assert.NoError(t, err)
assert.Contains(t, string(resp), "unsupported provider event")
rule.Conditions.ProviderEvents = []string{"add"}
rule.Conditions.Options.RoleNames = []dataprovider.ConditionPattern{
{
Pattern: "",
},
}
_, resp, err = httpdtest.AddEventRule(rule, http.StatusBadRequest)
assert.NoError(t, err)
assert.Contains(t, string(resp), "empty condition pattern not allowed")
rule.Conditions.Options.RoleNames = nil
rule.Trigger = dataprovider.EventTriggerSchedule
_, resp, err = httpdtest.AddEventRule(rule, http.StatusBadRequest)
assert.NoError(t, err)
@ -2026,8 +2044,8 @@ func TestEventRuleValidation(t *testing.T) {
Month: "*",
},
}
_, _, err = httpdtest.AddEventRule(rule, http.StatusInternalServerError)
assert.NoError(t, err)
_, resp, err = httpdtest.AddEventRule(rule, http.StatusInternalServerError)
assert.NoError(t, err, string(resp))
}
func TestUserTransferLimits(t *testing.T) {
@ -20180,6 +20198,12 @@ func TestWebEventRule(t *testing.T) {
InverseMatch: true,
},
},
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: "g*",
InverseMatch: true,
},
},
},
},
Actions: []dataprovider.EventAction{
@ -20211,6 +20235,8 @@ func TestWebEventRule(t *testing.T) {
form.Set("type_name_pattern0", "inverse")
form.Set("group_name_pattern0", rule.Conditions.Options.GroupNames[0].Pattern)
form.Set("type_group_name_pattern0", "inverse")
form.Set("role_name_pattern0", rule.Conditions.Options.RoleNames[0].Pattern)
form.Set("type_role_name_pattern0", "inverse")
req, err = http.NewRequest(http.MethodPost, webAdminEventRulePath, bytes.NewBuffer([]byte(form.Encode())))
assert.NoError(t, err)
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
@ -20309,6 +20335,12 @@ func TestWebEventRule(t *testing.T) {
InverseMatch: true,
},
},
RoleNames: []dataprovider.ConditionPattern{
{
Pattern: "g*",
InverseMatch: true,
},
},
FsPaths: []dataprovider.ConditionPattern{
{
Pattern: "/subdir/*.txt",

14
internal/httpd/webadmin.go
View file

@ -2169,7 +2169,7 @@ func getEventActionFromPostFields(r *http.Request) (dataprovider.BaseEventAction
func getEventRuleConditionsFromPostFields(r *http.Request) (dataprovider.EventConditions, error) {
var schedules []dataprovider.Schedule
var names, groupNames, fsPaths []dataprovider.ConditionPattern
var names, groupNames, roleNames, fsPaths []dataprovider.ConditionPattern
for k := range r.Form {
if strings.HasPrefix(k, "schedule_hour") {
hour := r.Form.Get(k)
@ -2208,6 +2208,17 @@ func getEventRuleConditionsFromPostFields(r *http.Request) (dataprovider.EventCo
})
}
}
if strings.HasPrefix(k, "role_name_pattern") {
pattern := r.Form.Get(k)
if pattern != "" {
idx := strings.TrimPrefix(k, "role_name_pattern")
patternType := r.Form.Get(fmt.Sprintf("type_role_name_pattern%s", idx))
roleNames = append(roleNames, dataprovider.ConditionPattern{
Pattern: pattern,
InverseMatch: patternType == inversePatternType,
})
}
}
if strings.HasPrefix(k, "fs_path_pattern") {
pattern := r.Form.Get(k)
if pattern != "" {
@ -2235,6 +2246,7 @@ func getEventRuleConditionsFromPostFields(r *http.Request) (dataprovider.EventCo
Options: dataprovider.ConditionOptions{
Names: names,
GroupNames: groupNames,
RoleNames: roleNames,
FsPaths: fsPaths,
Protocols: r.Form["fs_protocols"],
ProviderObjects: r.Form["provider_objects"],

3
internal/httpdtest/httpdtest.go
View file

@ -1510,6 +1510,9 @@ func checkEventConditionOptions(expected, actual dataprovider.ConditionOptions)
if err := compareConditionPatternOptions(expected.GroupNames, actual.GroupNames); err != nil {
return errors.New("condition group names mismatch")
}
if err := compareConditionPatternOptions(expected.RoleNames, actual.RoleNames); err != nil {
return errors.New("condition role names mismatch")
}
if err := compareConditionPatternOptions(expected.FsPaths, actual.FsPaths); err != nil {
return errors.New("condition fs_paths mismatch")
}

4
openapi/openapi.yaml
View file

@ -6500,6 +6500,10 @@ components:
type: array
items:
$ref: '#/components/schemas/ConditionPattern'
role_names:
type: array
items:
$ref: '#/components/schemas/ConditionPattern'
fs_paths:
type: array
items:

84
templates/webadmin/eventrule.html
View file

@ -291,6 +291,60 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
</div>
</div>
<div class="card bg-light mb-3 trigger trigger-fs trigger-schedule trigger-provider">
<div class="card-header">
<b>Role name filters</b>
</div>
<div class="card-body">
<h6 class="card-title mb-4">Shell-like pattern filters for role names. For example "role*"" will match role names starting with "role".</h6>
<div class="form-group row">
<div class="col-md-12 form_field_role_names_outer">
{{range $idx, $val := .Rule.Conditions.Options.RoleNames}}
<div class="row form_field_role_names_outer_row">
<div class="form-group col-md-8">
<input type="text" class="form-control" id="idRoleNamePattern{{$idx}}" name="role_name_pattern{{$idx}}" placeholder="" value="{{$val.Pattern}}" maxlength="255">
</div>
<div class="form-group col-md-3">
<select class="form-control selectpicker" id="idRoleNamePatternType{{$idx}}" name="type_role_name_pattern{{$idx}}">
<option value=""></option>
<option value="inverse" {{if $val.InverseMatch}}selected{{end}}>Inverse match</option>
</select>
</div>
<div class="form-group col-md-1">
<button class="btn btn-circle btn-danger remove_role_name_pattern_btn_frm_field">
<i class="fas fa-trash"></i>
</button>
</div>
</div>
{{else}}
<div class="row form_field_role_names_outer_row">
<div class="form-group col-md-8">
<input type="text" class="form-control" id="idRoleNamePattern0" name="role_name_pattern0" placeholder="" value="" maxlength="255">
</div>
<div class="form-group col-md-3">
<select class="form-control selectpicker" id="idRoleNamePatternType0" name="type_role_name_pattern0">
<option value=""></option>
<option value="inverse">Inverse match</option>
</select>
</div>
<div class="form-group col-md-1">
<button class="btn btn-circle btn-danger remove_role_name_pattern_btn_frm_field">
<i class="fas fa-trash"></i>
</button>
</div>
</div>
{{end}}
</div>
</div>
<div class="row mx-1">
<button type="button" class="btn btn-secondary add_new_role_name_pattern_field_btn">
<i class="fas fa-plus"></i> Add new filter
</button>
</div>
</div>
</div>
<div class="card bg-light mb-3 trigger trigger-fs">
<div class="card-header">
<b>Path filters</b>
@ -542,6 +596,36 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
$(this).closest(".form_field_group_names_outer_row").remove();
});
$("body").on("click", ".add_new_role_name_pattern_field_btn", function () {
var index = $(".form_field_role_names_outer").find(".form_field_role_names_outer_row").length;
while (document.getElementById("idRoleNamePattern"+index) != null){
index++;
}
$(".form_field_role_names_outer").append(`
<div class="row form_field_role_names_outer_row">
<div class="form-group col-md-8">
<input type="text" class="form-control" id="idRoleNamePattern${index}" name="role_name_pattern${index}" placeholder="" value="" maxlength="255">
</div>
<div class="form-group col-md-3">
<select class="form-control" id="idRoleNamePatternType${index}" name="type_role_name_pattern${index}">
<option value=""></option>
<option value="inverse">Inverse match</option>
</select>
</div>
<div class="form-group col-md-1">
<button class="btn btn-circle btn-danger remove_role_name_pattern_btn_frm_field">
<i class="fas fa-trash"></i>
</button>
</div>
</div>
`);
$("#idRoleNamePatternType"+index).selectpicker();
});
$("body").on("click", ".remove_role_name_pattern_btn_frm_field", function () {
$(this).closest(".form_field_role_names_outer_row").remove();
});
$("body").on("click", ".add_new_fs_path_pattern_field_btn", function () {
var index = $(".form_field_fs_paths_outer").find("form_field_fs_paths_outer_row").length;
while (document.getElementById("idFsPathPattern"+index) != null){