139 lines
3.1 KiB
Go
139 lines
3.1 KiB
Go
// Copyright (C) 2021 Storj Labs, Inc.
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// See LICENSE for copying information.
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package main
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import (
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"context"
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"encoding/json"
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"os"
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"strings"
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"github.com/zeebo/errs"
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"storj.io/uplink"
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)
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func (ex *external) loadAccesses() error {
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if ex.access.accesses != nil {
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return nil
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}
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fh, err := os.Open(ex.AccessInfoFile())
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if os.IsNotExist(err) {
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return nil
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} else if err != nil {
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return errs.Wrap(err)
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}
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defer func() { _ = fh.Close() }()
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var jsonInput struct {
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Default string
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Accesses map[string]string
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}
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if err := json.NewDecoder(fh).Decode(&jsonInput); err != nil {
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return errs.Wrap(err)
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}
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ex.access.defaultName = jsonInput.Default
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ex.access.accesses = jsonInput.Accesses
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ex.access.loaded = true
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return nil
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}
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func (ex *external) OpenAccess(accessName string) (access *uplink.Access, err error) {
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accessDefault, accesses, err := ex.GetAccessInfo(true)
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if err != nil {
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return nil, err
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}
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if accessName != "" {
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accessDefault = accessName
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}
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if data, ok := accesses[accessDefault]; ok {
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access, err = uplink.ParseAccess(data)
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} else {
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access, err = uplink.ParseAccess(accessDefault)
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// TODO: if this errors then it's probably a name so don't report an error
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// that says "it failed to parse"
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}
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if err != nil {
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return nil, err
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}
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return access, nil
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}
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func (ex *external) GetAccessInfo(required bool) (string, map[string]string, error) {
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if !ex.access.loaded {
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if err := ex.loadAccesses(); err != nil {
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return "", nil, err
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}
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if required && !ex.access.loaded {
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return "", nil, errs.New("No accesses configured. Use 'access save' to create one")
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}
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}
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// return a copy to avoid mutations messing things up
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accesses := make(map[string]string)
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for name, accessData := range ex.access.accesses {
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accesses[name] = accessData
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}
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return ex.access.defaultName, accesses, nil
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}
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// SaveAccessInfo writes out the access file using the provided values.
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func (ex *external) SaveAccessInfo(defaultName string, accesses map[string]string) error {
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// TODO(jeff): write it atomically
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accessFh, err := os.OpenFile(ex.AccessInfoFile(), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
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if err != nil {
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return errs.Wrap(err)
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}
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defer func() { _ = accessFh.Close() }()
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var jsonOutput = struct {
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Default string
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Accesses map[string]string
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}{
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Default: defaultName,
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Accesses: accesses,
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}
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data, err := json.MarshalIndent(jsonOutput, "", "\t")
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if err != nil {
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return errs.Wrap(err)
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}
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if _, err := accessFh.Write(data); err != nil {
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return errs.Wrap(err)
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}
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if err := accessFh.Sync(); err != nil {
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return errs.Wrap(err)
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}
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if err := accessFh.Close(); err != nil {
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return errs.Wrap(err)
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}
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return nil
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}
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func (ex *external) RequestAccess(ctx context.Context, token, passphrase string) (*uplink.Access, error) {
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idx := strings.IndexByte(token, '/')
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if idx == -1 {
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return nil, errs.New("invalid setup token. should be 'satelliteAddress/apiKey'")
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}
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satelliteAddr, apiKey := token[:idx], token[idx+1:]
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access, err := uplink.RequestAccessWithPassphrase(ctx, satelliteAddr, apiKey, passphrase)
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if err != nil {
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return nil, errs.Wrap(err)
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}
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return access, nil
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}
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