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|
package authorization
import (
"regexp"
"strings"
"github.com/authelia/authelia/v4/internal/authentication"
"github.com/authelia/authelia/v4/internal/configuration/schema"
)
// NewLevel converts a string policy to int authorization level.
func NewLevel(policy string) Level {
switch policy {
case bypass:
return Bypass
case oneFactor:
return OneFactor
case twoFactor:
return TwoFactor
case deny:
return Denied
}
// By default the deny policy applies.
return Denied
}
// String returns a policy string representation of an authorization.Level.
func (l Level) String() string {
switch l {
case Bypass:
return bypass
case OneFactor:
return oneFactor
case TwoFactor:
return twoFactor
case Denied:
return deny
default:
return deny
}
}
func stringSliceToRegexpSlice(strings []string) (regexps []regexp.Regexp, err error) {
var pattern *regexp.Regexp
for _, str := range strings {
if pattern, err = regexp.Compile(str); err != nil {
return nil, err
}
regexps = append(regexps, *pattern)
}
return regexps, nil
}
func schemaSubjectToACLSubject(subjectRule string) (subject SubjectMatcher) {
if strings.HasPrefix(subjectRule, prefixUser) {
user := strings.Trim(subjectRule[lenPrefixUser:], " ")
return AccessControlUser{Name: user}
}
if strings.HasPrefix(subjectRule, prefixGroup) {
group := strings.Trim(subjectRule[lenPrefixGroup:], " ")
return AccessControlGroup{Name: group}
}
if strings.HasPrefix(subjectRule, prefixOAuth2Client) {
clientID := strings.Trim(subjectRule[lenPrefixOAuth2Client:], " ")
return AccessControlClient{Provider: "OAuth2", ID: clientID}
}
return nil
}
func ruleAddDomain(domainRules []string, rule *AccessControlRule) {
for _, domainRule := range domainRules {
subjects, r := NewAccessControlDomain(domainRule)
rule.Domains = append(rule.Domains, r)
if !rule.HasSubjects && subjects {
rule.HasSubjects = true
}
}
}
func ruleAddDomainRegex(exps []regexp.Regexp, rule *AccessControlRule) {
for _, exp := range exps {
subjects, r := NewAccessControlDomainRegex(exp)
rule.Domains = append(rule.Domains, r)
if !rule.HasSubjects && subjects {
rule.HasSubjects = true
}
}
}
func ruleAddResources(exps []regexp.Regexp, rule *AccessControlRule) {
for _, exp := range exps {
subjects, r := NewAccessControlResource(exp)
rule.Resources = append(rule.Resources, r)
if !rule.HasSubjects && subjects {
rule.HasSubjects = true
}
}
}
func schemaMethodsToACL(methodRules []string) (methods []string) {
for _, method := range methodRules {
methods = append(methods, strings.ToUpper(method))
}
return methods
}
func schemaSubjectsToACL(subjectRules [][]string) (subjects []AccessControlSubjects) {
for _, subjectRule := range subjectRules {
subject := AccessControlSubjects{}
for _, subjectRuleItem := range subjectRule {
subject.AddSubject(subjectRuleItem)
}
if len(subject.Subjects) != 0 {
subjects = append(subjects, subject)
}
}
return subjects
}
func domainToPrefixSuffix(domain string) (prefix, suffix string) {
parts := strings.Split(domain, ".")
if len(parts) == 1 {
return "", parts[0]
}
return parts[0], strings.Join(parts[1:], ".")
}
func NewSubjects(subjectRules [][]string) (subjects []AccessControlSubjects) {
return schemaSubjectsToACL(subjectRules)
}
// IsAuthLevelSufficient returns true if the current authenticationLevel is above the authorizationLevel.
func IsAuthLevelSufficient(authenticationLevel authentication.Level, authorizationLevel Level) bool {
switch authorizationLevel {
case Denied:
return false
case OneFactor:
return authenticationLevel >= authentication.OneFactor
case TwoFactor:
return authenticationLevel >= authentication.TwoFactor
}
return true
}
func isOpenIDConnectMFA(config *schema.Configuration) (mfa bool) {
if config == nil || config.IdentityProviders.OIDC == nil {
return false
}
for _, client := range config.IdentityProviders.OIDC.Clients {
switch client.AuthorizationPolicy {
case oneFactor:
continue
case twoFactor:
return true
default:
policy, ok := config.IdentityProviders.OIDC.AuthorizationPolicies[client.AuthorizationPolicy]
if !ok {
continue
}
if policy.DefaultPolicy == twoFactor {
return true
}
for _, rule := range policy.Rules {
if rule.Policy == twoFactor {
return true
}
}
}
}
return false
}
|
