mirror of https://github.com/restic/restic.git
100 lines
3.6 KiB
Go
100 lines
3.6 KiB
Go
package smb
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import (
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"path"
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"strconv"
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"strings"
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"time"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/options"
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)
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// Config contains all configuration necessary to connect to an SMB server
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type Config struct {
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Address string
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Port int
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ShareName string
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Path string
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User string `option:"user" help:"specify the SMB user for NTLM authentication."`
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Password options.SecretString `option:"password" help:"specify the SMB password for NTLM authentication."`
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Domain string `option:"domain" help:"specify the domain for authentication."`
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Layout string `option:"layout" help:"use this backend directory layout (default: auto-detect)"`
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Connections uint `option:"connections" help:"set a limit for the number of concurrent operations (default: 2)"`
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IdleTimeout time.Duration `option:"idle-timeout" help:"Max time in seconds before closing idle connections. If no connections have been returned to the connection pool in the time given, the connection pool will be emptied. Set to 0 to keep connections indefinitely.(default: 60)"`
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RequireMessageSigning bool `option:"require-message-signing" help:"Mandates message signing otherwise does not allow the connection. If this is false, messaging signing is just enabled and not enforced. (default: false)"`
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Dialect uint16 `option:"dialect" help:"Force a specific dialect to be used. SMB311:785, SMB302:770, SMB300:768, SMB210:528, SMB202:514, SMB2:767. If unspecfied (0), following dialects are tried in order - SMB311, SMB302, SMB300, SMB210, SMB202 (default: 0)"`
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ClientGuid string `option:"client-guid" help:"A 16-byte GUID to uniquely identify a client. If not specific a random GUID is used. (default: \"\")"`
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}
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const (
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DefaultSmbPort int = 445
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DefaultDomain string = "WORKGROUP"
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DefaultConnections uint = 2
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DefaultIdleTimeout time.Duration = 60 * time.Second
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)
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// NewConfig returns a new Config with the default values filled in.
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func NewConfig() Config {
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return Config{
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Port: DefaultSmbPort,
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Domain: DefaultDomain,
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IdleTimeout: DefaultIdleTimeout,
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Connections: DefaultConnections,
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}
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}
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func init() {
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options.Register("smb", Config{})
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}
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// ParseConfig parses the string s and extracts the s3 config. The two
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// supported configuration formats are smb://address:port/sharename/directory and
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// smb://address/sharename/directory in which case default port 445 is used.
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// If no prefix is given the prefix "restic" will be used.
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func ParseConfig(s string) (interface{}, error) {
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switch {
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case strings.HasPrefix(s, "smb://"):
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s = s[6:]
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case strings.HasPrefix(s, "smb:"):
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s = s[4:]
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default:
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return nil, errors.New("smb: invalid format")
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}
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// use the first entry of the path as the endpoint and the
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// remainder as bucket name and prefix
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fullAddress, rest, _ := strings.Cut(s, "/")
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address, portString, hasPort := strings.Cut(fullAddress, ":")
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var port int
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if !hasPort {
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port = DefaultSmbPort
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} else {
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var err error
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port, err = strconv.Atoi(portString)
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if err != nil {
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return nil, err
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}
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}
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sharename, directory, _ := strings.Cut(rest, "/")
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return createConfig(address, port, sharename, directory)
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}
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func createConfig(address string, port int, sharename string, directory string) (interface{}, error) {
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if address == "" {
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return nil, errors.New("smb: invalid format, address not found")
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}
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if directory != "" {
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directory = path.Clean(directory)
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}
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cfg := NewConfig()
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cfg.Address = address
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cfg.Port = port
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cfg.ShareName = sharename
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cfg.Path = directory
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return cfg, nil
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}
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