mirror of
https://github.com/restic/restic.git
synced 2024-08-24 21:27:23 +02:00
94 lines
2.0 KiB
Go
94 lines
2.0 KiB
Go
package b2
|
|
|
|
import (
|
|
"path"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"github.com/restic/restic/internal/errors"
|
|
"github.com/restic/restic/internal/options"
|
|
)
|
|
|
|
// Config contains all configuration necessary to connect to an b2 compatible
|
|
// server.
|
|
type Config struct {
|
|
AccountID string
|
|
Key string
|
|
Bucket string
|
|
Prefix string
|
|
|
|
Connections uint `option:"connections" help:"set a limit for the number of concurrent connections (default: 5)"`
|
|
}
|
|
|
|
// NewConfig returns a new config with default options applied.
|
|
func NewConfig() Config {
|
|
return Config{
|
|
Connections: 5,
|
|
}
|
|
}
|
|
|
|
func init() {
|
|
options.Register("b2", Config{})
|
|
}
|
|
|
|
var bucketName = regexp.MustCompile("^[a-zA-Z0-9-]+$")
|
|
|
|
// checkBucketName tests the bucket name against the rules at
|
|
// https://help.backblaze.com/hc/en-us/articles/217666908-What-you-need-to-know-about-B2-Bucket-names
|
|
func checkBucketName(name string) error {
|
|
if name == "" {
|
|
return errors.New("bucket name is empty")
|
|
}
|
|
|
|
if len(name) < 6 {
|
|
return errors.New("bucket name is too short")
|
|
}
|
|
|
|
if len(name) > 50 {
|
|
return errors.New("bucket name is too long")
|
|
}
|
|
|
|
if !bucketName.MatchString(name) {
|
|
return errors.New("bucket name contains invalid characters, allowed are: a-z, 0-9, dash (-)")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// ParseConfig parses the string s and extracts the b2 config. The supported
|
|
// configuration format is b2:bucketname/prefix. If no prefix is given the
|
|
// prefix "restic" will be used.
|
|
func ParseConfig(s string) (interface{}, error) {
|
|
if !strings.HasPrefix(s, "b2:") {
|
|
return nil, errors.New("invalid format, want: b2:bucket-name[:path]")
|
|
}
|
|
|
|
s = s[3:]
|
|
data := strings.SplitN(s, ":", 2)
|
|
if len(data) == 0 || len(data[0]) == 0 {
|
|
return nil, errors.New("bucket name not found")
|
|
}
|
|
|
|
cfg := NewConfig()
|
|
cfg.Bucket = data[0]
|
|
|
|
if err := checkBucketName(cfg.Bucket); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if len(data) == 2 {
|
|
p := data[1]
|
|
if len(p) > 0 {
|
|
p = path.Clean(p)
|
|
}
|
|
|
|
if len(p) > 0 && path.IsAbs(p) {
|
|
p = p[1:]
|
|
}
|
|
|
|
cfg.Prefix = p
|
|
}
|
|
|
|
return cfg, nil
|
|
}
|