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rules.go
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rules.go
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package yast
import (
"strings"
"github.com/infobloxopen/themis/pdp"
)
func (ctx context) unmarshalCondition(m map[interface{}]interface{}) (pdp.Expression, boundError) {
v, ok := m[yastTagCondition]
if !ok {
return nil, nil
}
e, err := ctx.unmarshalExpression(v)
if err != nil {
return nil, err
}
t := e.GetResultType()
if t != pdp.TypeBoolean {
return nil, newConditionTypeError(t)
}
return e, nil
}
func (ctx context) unmarshalRule(m map[interface{}]interface{}, i int) (*pdp.Rule, boundError) {
ID, okID, err := ctx.extractStringOpt(m, yastTagID, "id")
if err != nil {
return nil, bindErrorf(err, "%d", i)
}
src := makeSource("rule", ID, !okID, i)
target, err := ctx.unmarshalTarget(m)
if err != nil {
return nil, bindError(err, src)
}
cond, err := ctx.unmarshalCondition(m)
if err != nil {
return nil, bindError(err, src)
}
s, err := ctx.extractString(m, yastTagEffect, "effect")
if err != nil {
return nil, bindError(err, src)
}
effect, ok := pdp.EffectIDs[strings.ToLower(s)]
if !ok {
return nil, bindError(newUnknownEffectError(s), src)
}
obls, err := ctx.unmarshalObligations(m)
if err != nil {
return nil, bindError(err, src)
}
return pdp.NewRule(ID, !okID, target, cond, effect, obls), nil
}
func (ctx context) unmarshalRuleEntity(m map[interface{}]interface{}, ID string, hidden bool, effect interface{}) (*pdp.Rule, boundError) {
src := makeSource("rule", ID, hidden, 0)
target, err := ctx.unmarshalTarget(m)
if err != nil {
return nil, bindError(err, src)
}
cond, err := ctx.unmarshalCondition(m)
if err != nil {
return nil, bindError(err, src)
}
s, err := ctx.validateString(effect, "effect")
if err != nil {
return nil, bindError(err, src)
}
eff, ok := pdp.EffectIDs[strings.ToLower(s)]
if !ok {
return nil, bindError(newUnknownEffectError(s), src)
}
obls, err := ctx.unmarshalObligations(m)
if err != nil {
return nil, bindError(err, src)
}
return pdp.NewRule(ID, hidden, target, cond, eff, obls), nil
}
func (ctx context) unmarshalRulesItem(v interface{}, i int) (*pdp.Rule, boundError) {
m, err := ctx.validateMap(v, "rule")
if err != nil {
return nil, bindErrorf(err, "%d", i)
}
return ctx.unmarshalRule(m, i)
}
func (ctx context) unmarshalRules(v interface{}) ([]*pdp.Rule, boundError) {
rules := []*pdp.Rule{}
items, err := ctx.validateList(v, "policy rules")
if err != nil {
return nil, err
}
for i, item := range items {
r, err := ctx.unmarshalRulesItem(item, i+1)
if err != nil {
return nil, err
}
rules = append(rules, r)
}
return rules, nil
}