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validators.go
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validators.go
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// Copyright 2023 sigma
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package validators
import (
"net/http"
"regexp"
"strings"
"github.com/distribution/reference"
"github.com/go-playground/validator"
"github.com/labstack/echo/v4"
"github.com/opencontainers/go-digest"
"github.com/robfig/cron/v3"
pwdvalidate "github.com/wagslane/go-password-validator"
"github.com/go-sigma/sigma/pkg/consts"
"github.com/go-sigma/sigma/pkg/types/enums"
)
const (
maxNamespace = 20
)
var (
namespaceRegex = regexp.MustCompile(`^[a-z][0-9a-z-]{0,20}$`)
)
// CustomValidator is a custom validator for echo
type CustomValidator struct {
validator *validator.Validate
}
// Validate validates the input
func (cv *CustomValidator) Validate(i interface{}) error {
if err := cv.validator.Struct(i); err != nil {
// Optionally, you could return the error to give each route more control over the status code
return echo.NewHTTPError(http.StatusBadRequest, err.Error())
}
return nil
}
// Initialize initializes the validator
func Initialize(e *echo.Echo) {
validate := validator.New()
register(validate)
e.Validator = &CustomValidator{validator: validate}
}
// register registers the validators
func register(v *validator.Validate) {
v.RegisterValidation("is_valid_namespace_role", ValidateRetentionPattern) // nolint:errcheck
v.RegisterValidation("is_valid_retention_pattern", ValidateRetentionPattern) // nolint:errcheck
v.RegisterValidation("is_valid_retention_rule_type", ValidateRetentionRuleType) // nolint:errcheck
v.RegisterValidation("is_valid_cron_rule", ValidateCronRule) // nolint:errcheck
v.RegisterValidation("is_valid_user_role", ValidateUserRole) // nolint:errcheck
v.RegisterValidation("is_valid_user_status", ValidateUserStatue) // nolint:errcheck
v.RegisterValidation("is_valid_email", ValidateEmail) // nolint:errcheck
v.RegisterValidation("is_valid_username", ValidateUsername) // nolint:errcheck
v.RegisterValidation("is_valid_password", ValidatePassword) // nolint:errcheck
v.RegisterValidation("is_valid_namespace", ValidateNamespace) // nolint:errcheck
v.RegisterValidation("is_valid_repository", ValidateRepository) // nolint:errcheck
v.RegisterValidation("is_valid_digest", ValidateDigest) // nolint:errcheck
v.RegisterValidation("is_valid_tag", ValidateTag) // nolint:errcheck
v.RegisterValidation("is_valid_visibility", ValidateVisibility) // nolint:errcheck
v.RegisterValidation("is_valid_provider", ValidateProvider) // nolint:errcheck
v.RegisterValidation("is_valid_scm_credential_type", ValidateScmCredentialType) // nolint:errcheck
v.RegisterValidation("is_valid_oci_platforms", ValidateOciPlatforms) // nolint:errcheck
}
// ValidateNamespaceRole ...
func ValidateNamespaceRole(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseNamespaceRole(v)
return err == nil
}
// ValidateRetentionPattern ...
func ValidateRetentionPattern(field validator.FieldLevel) bool {
patterns := strings.Split(field.Field().String(), ",")
for _, pattern := range patterns {
if pattern == "" {
return false
}
_, err := regexp.Compile(pattern)
if err != nil {
return false
}
}
return true
}
// ValidateRetentionRuleType ...
func ValidateRetentionRuleType(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseRetentionRuleType(v)
return err == nil
}
// ValidateCronRule ...
func ValidateCronRule(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := cron.ParseStandard(v)
return err == nil
}
// ValidateUserRole validates the user role
func ValidateUserRole(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseUserRole(v)
return err == nil
}
// ValidateUserStatue validates the user status
func ValidateUserStatue(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseUserStatus(v)
return err == nil
}
// ValidatePassword validates the password
func ValidatePassword(field validator.FieldLevel) bool {
password := field.Field().String()
return pwdvalidate.Validate(password, consts.PwdStrength) == nil
}
// ValidateEmail validates the email
func ValidateEmail(field validator.FieldLevel) bool {
email := field.Field().String()
return consts.RegexEmail.MatchString(email)
}
// ValidateUsername validates the username
func ValidateUsername(field validator.FieldLevel) bool {
username := field.Field().String()
return consts.RegexUsername.MatchString(username)
}
// ValidateRepository validates the repository name
func ValidateRepository(field validator.FieldLevel) bool {
return ValidateRepositoryRaw(field.Field().String())
}
// ValidateRepositoryRaw ...
func ValidateRepositoryRaw(repository string) bool {
if len(strings.Split(repository, "/")) < 2 {
return false
}
_, err := reference.ParseNormalizedNamed(repository)
return err == nil
}
// ValidateDigest validates the digest
func ValidateDigest(field validator.FieldLevel) bool {
dgest := field.Field().String()
_, err := digest.Parse(dgest)
return err == nil
}
// ValidateNamespace validates the namespace name
func ValidateNamespace(field validator.FieldLevel) bool {
return ValidateNamespaceRaw(field.Field().String())
}
// ValidateNamespaceRaw ...
func ValidateNamespaceRaw(namespace string) bool {
return namespaceRegex.MatchString(namespace) && len(namespace) <= maxNamespace
}
// ValidateTag validates the tag
func ValidateTag(field validator.FieldLevel) bool {
return consts.TagRegexp.MatchString(field.Field().String())
}
// ValidateVisibility validates the visibility
func ValidateVisibility(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseVisibility(v)
return err == nil
}
// ValidateProvider validates the provider
func ValidateProvider(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseProvider(v)
return err == nil
}
// ValidateScmCredentialType validates the ScmCredentialType
func ValidateScmCredentialType(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseScmCredentialType(v)
return err == nil
}
// ValidateBuilderSource validates the builder source
func ValidateBuilderSource(field validator.FieldLevel) bool {
v := field.Field().String()
_, err := enums.ParseBuilderSource(v)
return err == nil
}
// ValidateOciPlatforms validates oci platforms
func ValidateOciPlatforms(field validator.FieldLevel) bool {
for i := 0; i < field.Field().Len(); i++ {
v := field.Field().Index(i).String()
_, err := enums.ParseOciPlatform(v)
if err != nil {
return false
}
}
return true
}