70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package utils
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import (
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"strings"
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"beryju.io/ldap"
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goldap "github.com/go-ldap/ldap/v3"
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ber "github.com/nmcclain/asn1-ber"
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"goauthentik.io/api/v3"
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"goauthentik.io/internal/outpost/ldap/constants"
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)
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func ParseFilterForGroup(req api.ApiCoreGroupsListRequest, f *ber.Packet, skip bool) (api.ApiCoreGroupsListRequest, bool) {
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switch f.Tag {
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case ldap.FilterEqualityMatch:
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return parseFilterForGroupSingle(req, f)
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case ldap.FilterAnd:
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for _, child := range f.Children {
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r, s := ParseFilterForGroup(req, child, skip)
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skip = skip || s
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req = r
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}
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return req, skip
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}
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return req, skip
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}
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func parseFilterForGroupSingle(req api.ApiCoreGroupsListRequest, f *ber.Packet) (api.ApiCoreGroupsListRequest, bool) {
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// We can only handle key = value pairs here
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if len(f.Children) < 2 {
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return req, false
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}
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k := f.Children[0].Value
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// Ensure key is string
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if _, ok := k.(string); !ok {
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return req, false
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}
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v := f.Children[1].Value
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// Null values are ignored
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if v == nil {
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return req, false
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}
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val := stringify(v)
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if val == nil {
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return req, false
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}
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// Check key
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switch strings.ToLower(k.(string)) {
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case "cn":
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return req.Name(*val), false
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case "member":
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fallthrough
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case "memberOf":
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userDN, err := goldap.ParseDN(*val)
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if err != nil {
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return req.MembersByUsername([]string{*val}), false
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}
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username := userDN.RDNs[0].Attributes[0].Value
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// If the DN's first ou is virtual-groups, ignore this filter
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if len(userDN.RDNs) > 1 {
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if strings.EqualFold(userDN.RDNs[1].Attributes[0].Value, constants.OUVirtualGroups) || strings.EqualFold(userDN.RDNs[1].Attributes[0].Value, constants.OUGroups) {
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// Since we know we're not filtering anything, skip this request
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return req, true
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}
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}
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return req.MembersByUsername([]string{username}), false
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}
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return req, false
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}
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