103 lines
3.0 KiB
Go
103 lines
3.0 KiB
Go
package authorization
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import (
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"github.com/authelia/authelia/v4/internal/configuration/schema"
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"github.com/authelia/authelia/v4/internal/logging"
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)
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// Authorizer the component in charge of checking whether a user can access a given resource.
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type Authorizer struct {
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defaultPolicy Level
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rules []*AccessControlRule
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mfa bool
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configuration *schema.Configuration
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}
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// NewAuthorizer create an instance of authorizer with a given access control configuration.
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func NewAuthorizer(configuration *schema.Configuration) (authorizer *Authorizer) {
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authorizer = &Authorizer{
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defaultPolicy: StringToLevel(configuration.AccessControl.DefaultPolicy),
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rules: NewAccessControlRules(configuration.AccessControl),
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configuration: configuration,
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}
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if authorizer.defaultPolicy == TwoFactor {
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authorizer.mfa = true
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return authorizer
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}
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for _, rule := range authorizer.rules {
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if rule.Policy == TwoFactor {
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authorizer.mfa = true
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return authorizer
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}
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}
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if authorizer.configuration.IdentityProviders.OIDC != nil {
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for _, client := range authorizer.configuration.IdentityProviders.OIDC.Clients {
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if client.Policy == twoFactor {
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authorizer.mfa = true
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return authorizer
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}
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}
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}
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return authorizer
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}
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// IsSecondFactorEnabled return true if at least one policy is set to second factor.
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func (p Authorizer) IsSecondFactorEnabled() bool {
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return p.mfa
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}
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// GetRequiredLevel retrieve the required level of authorization to access the object.
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func (p Authorizer) GetRequiredLevel(subject Subject, object Object) Level {
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logger := logging.Logger()
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logger.Debugf("Check authorization of subject %s and object %s (method %s).",
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subject.String(), object.String(), object.Method)
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for _, rule := range p.rules {
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if rule.IsMatch(subject, object) {
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logger.Tracef(traceFmtACLHitMiss, "HIT", rule.Position, subject.String(), object.String(), object.Method)
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return rule.Policy
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}
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logger.Tracef(traceFmtACLHitMiss, "MISS", rule.Position, subject.String(), object.String(), object.Method)
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}
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logger.Debugf("No matching rule for subject %s and url %s... Applying default policy.",
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subject.String(), object.String())
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return p.defaultPolicy
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}
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// GetRuleMatchResults iterates through the rules and produces a list of RuleMatchResult provided a subject and object.
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func (p Authorizer) GetRuleMatchResults(subject Subject, object Object) (results []RuleMatchResult) {
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skipped := false
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results = make([]RuleMatchResult, len(p.rules))
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for i, rule := range p.rules {
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results[i] = RuleMatchResult{
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Rule: rule,
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Skipped: skipped,
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MatchDomain: isMatchForDomains(subject, object, rule),
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MatchResources: isMatchForResources(subject, object, rule),
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MatchMethods: isMatchForMethods(object, rule),
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MatchNetworks: isMatchForNetworks(subject, rule),
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MatchSubjects: isMatchForSubjects(subject, rule),
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MatchSubjectsExact: isExactMatchForSubjects(subject, rule),
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}
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skipped = skipped || results[i].IsMatch()
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}
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return results
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}
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