headscale/hscontrol/db/api_key.go
Kristoffer Dalby feb15365b5 Split code into modules
This is a massive commit that restructures the code into modules:

db/
    All functions related to modifying the Database

types/
    All type definitions and methods that can be exclusivly used on
    these types without dependencies

policy/
    All Policy related code, now without dependencies on the Database.

policy/matcher/
    Dedicated code to match machines in a list of FilterRules

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
2023-05-26 12:24:50 +02:00

126 lines
2.9 KiB
Go

package db
import (
"errors"
"fmt"
"strings"
"time"
"github.com/juanfont/headscale/hscontrol/types"
"github.com/juanfont/headscale/hscontrol/util"
"golang.org/x/crypto/bcrypt"
)
const (
apiPrefixLength = 7
apiKeyLength = 32
)
var ErrAPIKeyFailedToParse = errors.New("failed to parse ApiKey")
// CreateAPIKey creates a new ApiKey in a user, and returns it.
func (hsdb *HSDatabase) CreateAPIKey(
expiration *time.Time,
) (string, *types.APIKey, error) {
prefix, err := util.GenerateRandomStringURLSafe(apiPrefixLength)
if err != nil {
return "", nil, err
}
toBeHashed, err := util.GenerateRandomStringURLSafe(apiKeyLength)
if err != nil {
return "", nil, err
}
// Key to return to user, this will only be visible _once_
keyStr := prefix + "." + toBeHashed
hash, err := bcrypt.GenerateFromPassword([]byte(toBeHashed), bcrypt.DefaultCost)
if err != nil {
return "", nil, err
}
key := types.APIKey{
Prefix: prefix,
Hash: hash,
Expiration: expiration,
}
if err := hsdb.db.Save(&key).Error; err != nil {
return "", nil, fmt.Errorf("failed to save API key to database: %w", err)
}
return keyStr, &key, nil
}
// ListAPIKeys returns the list of ApiKeys for a user.
func (hsdb *HSDatabase) ListAPIKeys() ([]types.APIKey, error) {
keys := []types.APIKey{}
if err := hsdb.db.Find(&keys).Error; err != nil {
return nil, err
}
return keys, nil
}
// GetAPIKey returns a ApiKey for a given key.
func (hsdb *HSDatabase) GetAPIKey(prefix string) (*types.APIKey, error) {
key := types.APIKey{}
if result := hsdb.db.First(&key, "prefix = ?", prefix); result.Error != nil {
return nil, result.Error
}
return &key, nil
}
// GetAPIKeyByID returns a ApiKey for a given id.
func (hsdb *HSDatabase) GetAPIKeyByID(id uint64) (*types.APIKey, error) {
key := types.APIKey{}
if result := hsdb.db.Find(&types.APIKey{ID: id}).First(&key); result.Error != nil {
return nil, result.Error
}
return &key, nil
}
// DestroyAPIKey destroys a ApiKey. Returns error if the ApiKey
// does not exist.
func (hsdb *HSDatabase) DestroyAPIKey(key types.APIKey) error {
if result := hsdb.db.Unscoped().Delete(key); result.Error != nil {
return result.Error
}
return nil
}
// ExpireAPIKey marks a ApiKey as expired.
func (hsdb *HSDatabase) ExpireAPIKey(key *types.APIKey) error {
if err := hsdb.db.Model(&key).Update("Expiration", time.Now()).Error; err != nil {
return err
}
return nil
}
func (hsdb *HSDatabase) ValidateAPIKey(keyStr string) (bool, error) {
prefix, hash, found := strings.Cut(keyStr, ".")
if !found {
return false, ErrAPIKeyFailedToParse
}
key, err := hsdb.GetAPIKey(prefix)
if err != nil {
return false, fmt.Errorf("failed to validate api key: %w", err)
}
if key.Expiration.Before(time.Now()) {
return false, nil
}
if err := bcrypt.CompareHashAndPassword(key.Hash, []byte(hash)); err != nil {
return false, err
}
return true, nil
}