mirror of
https://github.com/octoleo/restic.git
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91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
package rest
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import (
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"net/url"
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"os"
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"strings"
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"github.com/restic/restic/internal/backend"
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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 a REST server.
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type Config struct {
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URL *url.URL
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Connections uint `option:"connections" help:"set a limit for the number of concurrent connections (default: 5)"`
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}
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func init() {
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options.Register("rest", Config{})
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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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Connections: 5,
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}
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}
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// ParseConfig parses the string s and extracts the REST server URL.
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func ParseConfig(s string) (*Config, error) {
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if !strings.HasPrefix(s, "rest:") {
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return nil, errors.New("invalid REST backend specification")
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}
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s = prepareURL(s)
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u, err := url.Parse(s)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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cfg := NewConfig()
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cfg.URL = u
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return &cfg, nil
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}
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// StripPassword removes the password from the URL
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// If the repository location cannot be parsed as a valid URL, it will be returned as is
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// (it's because this function is used for logging errors)
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func StripPassword(s string) string {
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scheme := s[:5]
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s = prepareURL(s)
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u, err := url.Parse(s)
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if err != nil {
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return scheme + s
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}
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if _, set := u.User.Password(); !set {
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return scheme + s
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}
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// a password was set: we replace it with ***
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return scheme + strings.Replace(u.String(), u.User.String()+"@", u.User.Username()+":***@", 1)
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}
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func prepareURL(s string) string {
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s = s[5:]
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if !strings.HasSuffix(s, "/") {
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s += "/"
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}
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return s
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}
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var _ backend.ApplyEnvironmenter = &Config{}
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// ApplyEnvironment saves values from the environment to the config.
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func (cfg *Config) ApplyEnvironment(prefix string) {
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username := cfg.URL.User.Username()
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_, pwdSet := cfg.URL.User.Password()
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// Only apply env variable values if neither username nor password are provided.
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if username == "" && !pwdSet {
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envName := os.Getenv(prefix + "RESTIC_REST_USERNAME")
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envPwd := os.Getenv(prefix + "RESTIC_REST_PASSWORD")
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cfg.URL.User = url.UserPassword(envName, envPwd)
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}
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}
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