/
store.go
144 lines (116 loc) · 2.64 KB
/
store.go
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package upnp
import (
"encoding/json"
"fmt"
"sync"
"github.com/boltdb/bolt"
)
type PortMappingInfo struct {
IGDServer string `json:"igdServer"`
ExternalPort int `json:"externalPort"`
InternalIP string `json:"internalIP"`
InternalPort int `json:"internalPort"`
ExternalIP string `json:"externalIP"`
}
func genId(igdServer string, externalPort int) string {
return fmt.Sprintf("%s:%d", igdServer, externalPort)
}
func binId(igdServer string, externalPort int) []byte {
return []byte(genId(igdServer, externalPort))
}
func (p *PortMappingInfo) binId() []byte {
return binId(p.IGDServer, p.ExternalPort)
}
func (p *PortMappingInfo) internalAddr() string {
return fmt.Sprintf("%s:%d", p.InternalIP, p.InternalPort)
}
var kBucket = []byte("portmapping")
type Store struct {
lock sync.Mutex
db *bolt.DB
}
func NewStore(path string) (*Store, error) {
db, err := bolt.Open(path, 0600, nil)
if err != nil {
return nil, err
}
err = db.Update(func(tx *bolt.Tx) error {
_, err := tx.CreateBucketIfNotExists(kBucket)
if err != nil {
return err
}
return nil
})
if err != nil {
return nil, err
}
return &Store{db: db}, nil
}
func (s *Store) CleanAndUpdate(pms []*PortMappingInfo) error {
s.lock.Lock()
defer s.lock.Unlock()
err := s.db.Update(func(tx *bolt.Tx) error {
err := tx.DeleteBucket(kBucket)
if err != nil {
return err
}
b, err := tx.CreateBucketIfNotExists(kBucket)
if err != nil {
return err
}
for _, pm := range pms {
data, err := json.Marshal(pm)
if err != nil {
return err
}
err = b.Put(pm.binId(), data)
if err != nil {
return err
}
}
return nil
})
return err
}
func (s *Store) AddPortMapping(pm *PortMappingInfo) error {
s.lock.Lock()
defer s.lock.Unlock()
data, err := json.Marshal(pm)
if err != nil {
return err
}
return s.db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket(kBucket)
return b.Put(pm.binId(), data)
})
}
func (s *Store) DeletePortMapping(igdServer string, externalPort int) error {
s.lock.Lock()
defer s.lock.Unlock()
return s.db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket(kBucket)
return b.Delete(binId(igdServer, externalPort))
})
}
func (s *Store) GetAllPortMapping() ([]*PortMappingInfo, error) {
s.lock.Lock()
defer s.lock.Unlock()
result := make([]*PortMappingInfo, 0)
err := s.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket(kBucket)
c := b.Cursor()
for k, v := c.First(); k != nil; k, v = c.Next() {
pm := &PortMappingInfo{}
err := json.Unmarshal(v, pm)
if err != nil {
return err
}
result = append(result, pm)
}
return nil
})
if err != nil {
return nil, err
}
return result, nil
}