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model.go
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model.go
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package model
import (
"database/sql/driver"
"encoding/json"
"errors"
"fmt"
"strconv"
"time"
"github.com/go-openapi/swag"
"github.com/google/uuid"
"github.com/treeverse/lakefs/pkg/auth/crypt"
"github.com/treeverse/lakefs/pkg/kv"
"golang.org/x/crypto/bcrypt"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/timestamppb"
)
const (
StatementEffectAllow = "allow"
StatementEffectDeny = "deny"
PartitionKey = "auth"
PackageName = "auth"
groupsPrefix = "groups"
groupsUsersPrefix = "gUsers"
groupsPoliciesPrefix = "gPolicies"
usersPrefix = "users"
policiesPrefix = "policies"
usersPoliciesPrefix = "uPolicies"
usersCredentialsPrefix = "uCredentials" // #nosec G101 -- False positive: this is only a kv key prefix
credentialsPrefix = "credentials"
expiredTokensPrefix = "expiredTokens"
metadataPrefix = "installation_metadata"
)
//nolint:gochecknoinits
func init() {
kv.MustRegisterType("auth", "users", (&UserData{}).ProtoReflect().Type())
kv.MustRegisterType("auth", "policies", (&PolicyData{}).ProtoReflect().Type())
kv.MustRegisterType("auth", "groups", (&GroupData{}).ProtoReflect().Type())
kv.MustRegisterType("auth", kv.FormatPath("uCredentials", "*", "credentials"), (&CredentialData{}).ProtoReflect().Type())
kv.MustRegisterType("auth", kv.FormatPath("gUsers", "*", "users"), (&kv.SecondaryIndex{}).ProtoReflect().Type())
kv.MustRegisterType("auth", kv.FormatPath("gPolicies", "*", "policies"), (&kv.SecondaryIndex{}).ProtoReflect().Type())
kv.MustRegisterType("auth", kv.FormatPath("uPolicies", "*", "policies"), (&kv.SecondaryIndex{}).ProtoReflect().Type())
kv.MustRegisterType("auth", "expiredTokens", (&TokenData{}).ProtoReflect().Type())
kv.MustRegisterType("auth", "installation_metadata", nil)
}
func UserPath(userName string) []byte {
return []byte(kv.FormatPath(usersPrefix, userName))
}
func PolicyPath(displayName string) []byte {
return []byte(kv.FormatPath(policiesPrefix, displayName))
}
func GroupPath(displayName string) []byte {
return []byte(kv.FormatPath(groupsPrefix, displayName))
}
func CredentialPath(userName string, accessKeyID string) []byte {
return []byte(kv.FormatPath(usersCredentialsPrefix, userName, credentialsPrefix, accessKeyID))
}
func GroupUserPath(groupDisplayName string, userName string) []byte {
return []byte(kv.FormatPath(groupsUsersPrefix, groupDisplayName, usersPrefix, userName))
}
func UserPolicyPath(userName string, policyDisplayName string) []byte {
return []byte(kv.FormatPath(usersPoliciesPrefix, userName, policiesPrefix, policyDisplayName))
}
func GroupPolicyPath(groupDisplayName string, policyDisplayName string) []byte {
return []byte(kv.FormatPath(groupsPoliciesPrefix, groupDisplayName, policiesPrefix, policyDisplayName))
}
func ExpiredTokenPath(tokenID string) []byte {
return []byte(kv.FormatPath(expiredTokensPrefix, tokenID))
}
func ExpiredTokensPath() []byte {
return ExpiredTokenPath("")
}
func MetadataKeyPath(key string) string {
return kv.FormatPath(metadataPrefix, key)
}
var ErrInvalidStatementSrcFormat = errors.New("invalid statements src format")
type PaginationParams struct {
Prefix string
After string
Amount int
}
// Paginator describes the parameters of a slice of data from a database.
type Paginator struct {
Amount int
NextPageToken string
}
// SuperuserConfiguration requests a particular configuration for a superuser.
type SuperuserConfiguration struct {
User
AccessKeyID string
SecretAccessKey string
}
type User struct {
CreatedAt time.Time `db:"created_at"`
// Username is a unique identifier for the user. In password-based authentication, it is the email.
Username string `db:"display_name" json:"display_name"`
// FriendlyName, if set, is a shorter name for the user than
// Username. Unlike Username it does not identify the user (it
// might not be unique); use it in the user's GUI rather than in
// backend code.
FriendlyName *string `db:"friendly_name" json:"friendly_name"`
Email *string `db:"email" json:"email"`
EncryptedPassword []byte `db:"encrypted_password" json:"encrypted_password"`
Source string `db:"source" json:"source"`
ExternalID *string `db:"external_id" json:"external_id"`
}
type DBUser struct {
ID int64 `db:"id"`
User
}
func ConvertDBID(id int64) string {
const base = 10
return strconv.FormatInt(id, base)
}
type Group struct {
CreatedAt time.Time `db:"created_at"`
DisplayName string `db:"display_name" json:"display_name"`
}
type DBGroup struct {
ID int `db:"id"`
Group
}
type ACLPermission string
type ACL struct {
Permission ACLPermission `json:"permission"`
}
type Policy struct {
CreatedAt time.Time `db:"created_at"`
DisplayName string `db:"display_name" json:"display_name"`
Statement Statements `db:"statement"`
ACL ACL `db:"acl" json:"acl,omitempty"`
}
type DBPolicy struct {
ID int `db:"id"`
Policy
}
type Statement struct {
Effect string `json:"Effect"`
Action []string `json:"Action"`
Resource string `json:"Resource"`
}
type Statements []Statement
type BaseCredential struct {
AccessKeyID string `db:"access_key_id"`
SecretAccessKey string `db:"-" json:"-"`
SecretAccessKeyEncryptedBytes []byte `db:"secret_access_key" json:"-"`
IssuedDate time.Time `db:"issued_date"`
}
type Credential struct {
Username string
BaseCredential
}
type DBCredential struct {
UserID int64 `db:"user_id"`
BaseCredential
}
// CredentialKeys - For JSON serialization:
type CredentialKeys struct {
AccessKeyID string `json:"access_key_id"`
SecretAccessKey string `json:"secret_access_key"`
}
func (u *User) UpdatePassword(password string) error {
pw, err := HashPassword(password)
if err != nil {
return err
}
u.EncryptedPassword = pw
return nil
}
// HashPassword generates a hashed password from a plaintext string
func HashPassword(password string) ([]byte, error) {
return bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
}
// Authenticate a user from a password Returns nil on success, or an error on failure.
func (u *User) Authenticate(password string) error {
return bcrypt.CompareHashAndPassword(u.EncryptedPassword, []byte(password))
}
func (s Statements) Value() (driver.Value, error) {
if s == nil {
return json.Marshal([]struct{}{})
}
return json.Marshal(s)
}
func (s *Statements) Scan(src interface{}) error {
if src == nil {
return nil
}
data, ok := src.([]byte)
if !ok {
return ErrInvalidStatementSrcFormat
}
return json.Unmarshal(data, s)
}
func UserFromProto(pb *UserData) *User {
return &User{
CreatedAt: pb.CreatedAt.AsTime(),
Username: pb.Username,
FriendlyName: &pb.FriendlyName,
Email: &pb.Email,
EncryptedPassword: pb.EncryptedPassword,
Source: pb.Source,
ExternalID: &pb.ExternalId,
}
}
func ProtoFromUser(u *User) *UserData {
return &UserData{
CreatedAt: timestamppb.New(u.CreatedAt),
Username: u.Username,
FriendlyName: swag.StringValue(u.FriendlyName),
Email: swag.StringValue(u.Email),
EncryptedPassword: u.EncryptedPassword,
Source: u.Source,
ExternalId: swag.StringValue(u.ExternalID),
}
}
func GroupFromProto(pb *GroupData) *Group {
return &Group{
CreatedAt: pb.CreatedAt.AsTime(),
DisplayName: pb.DisplayName,
}
}
func ProtoFromGroup(g *Group) *GroupData {
return &GroupData{
CreatedAt: timestamppb.New(g.CreatedAt),
DisplayName: g.DisplayName,
}
}
func PolicyFromProto(pb *PolicyData) *Policy {
policy := &Policy{
CreatedAt: pb.CreatedAt.AsTime(),
DisplayName: pb.DisplayName,
Statement: *statementsFromProto(pb.Statements),
}
if pb.Acl != nil {
policy.ACL = ACL{
Permission: ACLPermission(pb.Acl.Permission),
}
}
return policy
}
func ProtoFromPolicy(p *Policy) *PolicyData {
return &PolicyData{
CreatedAt: timestamppb.New(p.CreatedAt),
DisplayName: p.DisplayName,
Statements: protoFromStatements(&p.Statement),
Acl: &ACLData{
Permission: string(p.ACL.Permission),
},
}
}
func CredentialFromProto(s crypt.SecretStore, pb *CredentialData) (*Credential, error) {
secret, err := DecryptSecret(s, pb.SecretAccessKeyEncryptedBytes)
if err != nil {
return nil, err
}
return &Credential{
Username: string(pb.UserId),
BaseCredential: BaseCredential{
AccessKeyID: pb.AccessKeyId,
SecretAccessKey: secret,
SecretAccessKeyEncryptedBytes: pb.SecretAccessKeyEncryptedBytes,
IssuedDate: pb.IssuedDate.AsTime(),
},
}, nil
}
func ProtoFromCredential(c *Credential) *CredentialData {
return &CredentialData{
AccessKeyId: c.AccessKeyID,
SecretAccessKeyEncryptedBytes: c.SecretAccessKeyEncryptedBytes,
IssuedDate: timestamppb.New(c.IssuedDate),
UserId: []byte(c.Username),
}
}
func statementFromProto(pb *StatementData) *Statement {
return &Statement{
Effect: pb.Effect,
Action: pb.Action,
Resource: pb.Resource,
}
}
func protoFromStatement(s *Statement) *StatementData {
return &StatementData{
Effect: s.Effect,
Action: s.Action,
Resource: s.Resource,
}
}
func statementsFromProto(pb []*StatementData) *Statements {
statements := make(Statements, len(pb))
for i := range pb {
statements[i] = *statementFromProto(pb[i])
}
return &statements
}
func protoFromStatements(s *Statements) []*StatementData {
statements := make([]*StatementData, len(*s))
x := *s
for i := range *s {
statements[i] = protoFromStatement(&x[i])
}
return statements
}
func ConvertUsersList(users []*DBUser) []*User {
kvUsers := make([]*User, 0, len(users))
for _, u := range users {
kvUsers = append(kvUsers, &u.User)
}
return kvUsers
}
func ConvertUsersDataList(users []proto.Message) []*User {
kvUsers := make([]*User, 0, len(users))
for _, u := range users {
a := u.(*UserData)
kvUsers = append(kvUsers, UserFromProto(a))
}
return kvUsers
}
func ConvertCredList(creds []*DBCredential, username string) []*Credential {
res := make([]*Credential, 0, len(creds))
for _, c := range creds {
res = append(res, &Credential{
Username: username,
BaseCredential: c.BaseCredential,
})
}
return res
}
func ConvertGroupList(groups []*DBGroup) []*Group {
res := make([]*Group, 0, len(groups))
for _, g := range groups {
res = append(res, &g.Group)
}
return res
}
func ConvertGroupDataList(group []proto.Message) []*Group {
res := make([]*Group, 0, len(group))
for _, g := range group {
a := g.(*GroupData)
res = append(res, GroupFromProto(a))
}
return res
}
func ConvertPolicyDataList(policies []proto.Message) []*Policy {
res := make([]*Policy, 0, len(policies))
for _, p := range policies {
a := p.(*PolicyData)
res = append(res, PolicyFromProto(a))
}
return res
}
func ConvertCredDataList(s crypt.SecretStore, creds []proto.Message) ([]*Credential, error) {
res := make([]*Credential, 0, len(creds))
for _, c := range creds {
credentialData := c.(*CredentialData)
m, err := CredentialFromProto(s, credentialData)
if err != nil {
return nil, fmt.Errorf("credentials for %s: %w", credentialData.AccessKeyId, err)
}
m.SecretAccessKey = ""
res = append(res, m)
}
return res, nil
}
func DecryptSecret(s crypt.SecretStore, value []byte) (string, error) {
decrypted, err := s.Decrypt(value)
if err != nil {
return "", err
}
return string(decrypted), nil
}
func EncryptSecret(s crypt.SecretStore, secretAccessKey string) ([]byte, error) {
encrypted, err := s.Encrypt([]byte(secretAccessKey))
if err != nil {
return nil, err
}
return encrypted, nil
}
func CreateID() string {
return uuid.New().String()
}