321 lines
6.5 KiB
Go
321 lines
6.5 KiB
Go
package hub
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import (
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"bytes"
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"crypto/aes"
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"crypto/cipher"
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"crypto/sha1"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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"sync"
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"time"
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"gopkg.in/yaml.v2"
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"github.com/photoprism/photoprism/internal/hub/places"
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"github.com/photoprism/photoprism/pkg/clean"
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"github.com/photoprism/photoprism/pkg/fs"
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)
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const (
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StatusUnknown = ""
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StatusNew = "unregistered"
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StatusCommunity = "ce"
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)
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// Config represents backend api credentials for maps & geodata.
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type Config struct {
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Version string `json:"version" yaml:"Version"`
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FileName string `json:"-" yaml:"-"`
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Key string `json:"key" yaml:"Key"`
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Secret string `json:"secret" yaml:"Secret"`
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Session string `json:"session" yaml:"Session"`
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session *Session `json:"-" yaml:"-"`
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sessionMu sync.Mutex `json:"-" yaml:"-"`
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Status string `json:"status" yaml:"Status"`
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Serial string `json:"serial" yaml:"Serial"`
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Env string `json:"-" yaml:"-"`
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UserAgent string `json:"-" yaml:"-"`
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PartnerID string `json:"-" yaml:"-"`
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}
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// NewConfig creates a new backend api credentials instance.
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func NewConfig(version, fileName, serial, env, userAgent, partnerId string) *Config {
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return &Config{
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Version: version,
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FileName: fileName,
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Key: "",
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Secret: "",
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Session: "",
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Status: "",
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Serial: serial,
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Env: env,
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UserAgent: userAgent,
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PartnerID: partnerId,
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}
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}
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// MapKey returns the maps api key.
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func (c *Config) MapKey() string {
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if sess, err := c.DecodeSession(true); err != nil {
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return ""
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} else {
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return sess.MapKey
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}
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}
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// Customer returns the customer name.
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func (c *Config) Customer() string {
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if sess, err := c.DecodeSession(true); err != nil {
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return ""
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} else {
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return sess.Customer
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}
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}
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// Propagate updates backend api credentials in other packages.
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func (c *Config) Propagate() {
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places.Key = c.Key
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places.Secret = c.Secret
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}
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// Plus reports if you have a community membership.
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func (c *Config) Plus() bool {
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switch c.Status {
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case StatusUnknown, StatusNew, StatusCommunity:
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return false
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}
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return len(c.Session) > 0 && len(c.MapKey()) > 0
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}
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// Sanitize verifies and sanitizes backend api credentials.
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func (c *Config) Sanitize() {
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c.Key = strings.ToLower(c.Key)
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if c.Secret != "" {
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if c.Key != fmt.Sprintf("%x", sha1.Sum([]byte(c.Secret))) {
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c.Key = ""
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c.Secret = ""
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c.Session = ""
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c.Status = ""
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}
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}
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}
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// DecodeSession decodes backend api session data.
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func (c *Config) DecodeSession(cached bool) (Session, error) {
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c.sessionMu.Lock()
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defer c.sessionMu.Unlock()
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c.Sanitize()
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// No session?
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if c.Session == "" {
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c.session = nil
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return Session{}, fmt.Errorf("empty session")
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}
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if cached && c.session != nil {
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// Return cached session.
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return *c.session, nil
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} else {
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// Clear session cache.
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c.session = nil
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}
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result := Session{}
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s, err := hex.DecodeString(c.Session)
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if err != nil {
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return result, err
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}
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hash := sha256.New()
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if _, err := hash.Write([]byte(c.Secret)); err != nil {
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return result, err
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}
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var b []byte
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block, err := aes.NewCipher(hash.Sum(b))
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if err != nil {
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return result, err
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}
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iv := s[:aes.BlockSize]
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plaintext := make([]byte, len(s))
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stream := cipher.NewCTR(block, iv)
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stream.XORKeyStream(plaintext, s[aes.BlockSize:])
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plaintext = bytes.Trim(plaintext, "\x00")
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if err := json.Unmarshal(plaintext, &result); err != nil {
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return result, err
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}
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// Cache session.
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c.session = &result
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return result, nil
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}
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// Update renews backend api credentials without a token.
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func (c *Config) Update() error {
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return c.ReSync("")
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}
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// ReSync renews backend api credentials with an optional token.
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func (c *Config) ReSync(token string) (err error) {
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mutex.Lock()
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defer mutex.Unlock()
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// Clear session.
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c.session = nil
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// Make sure storage folder exists.
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if err = os.MkdirAll(filepath.Dir(c.FileName), fs.ModeDir); err != nil {
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return err
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}
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c.Sanitize()
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// Create new http.Client instance.
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//
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// NOTE: Timeout specifies a time limit for requests made by
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// this Client. The timeout includes connection time, any
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// redirects, and reading the response body. The timer remains
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// running after Get, Head, Post, or Do return and will
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// interrupt reading of the Response.Body.
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client := &http.Client{Timeout: 60 * time.Second}
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url := ServiceURL
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method := http.MethodPost
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var req *http.Request
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if c.Key != "" {
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url = fmt.Sprintf(ServiceURL+"/%s", c.Key)
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method = http.MethodPut
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log.Debugf("config: requesting updated api key for maps and places")
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} else {
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log.Debugf("config: requesting new api key for maps and places")
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}
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// Create JSON request.
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var j []byte
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if j, err = json.Marshal(NewRequest(c.Version, c.Serial, c.Env, c.PartnerID, token)); err != nil {
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return err
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} else if req, err = http.NewRequest(method, url, bytes.NewReader(j)); err != nil {
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return err
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}
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// Set user agent.
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if c.UserAgent != "" {
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req.Header.Set("User-Agent", c.UserAgent)
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} else {
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req.Header.Set("User-Agent", "PhotoPrism/Test")
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}
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// Add Content-Type header.
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req.Header.Add("Content-Type", "application/json")
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var r *http.Response
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// Send request.
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for i := 0; i < 3; i++ {
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r, err = client.Do(req)
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if err == nil {
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break
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}
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}
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// Ok?
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if err != nil {
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return err
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} else if r.StatusCode >= 400 {
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err = fmt.Errorf("fetching api key from %s failed (error %d)", ApiHost(), r.StatusCode)
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return err
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}
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// Decode JSON response.
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err = json.NewDecoder(r.Body).Decode(c)
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if err != nil {
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return err
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}
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return nil
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}
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// Load backend api credentials from a YAML file.
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func (c *Config) Load() error {
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if !fs.FileExists(c.FileName) {
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return fmt.Errorf("settings file not found: %s", clean.Log(c.FileName))
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}
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mutex.Lock()
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defer mutex.Unlock()
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yamlConfig, err := os.ReadFile(c.FileName)
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if err != nil {
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return err
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}
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if err := yaml.Unmarshal(yamlConfig, c); err != nil {
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return err
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}
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c.Sanitize()
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c.Propagate()
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if sess, err := c.DecodeSession(false); err != nil {
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return err
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} else if sess.Expired() {
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return errors.New("session expired")
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}
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return nil
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}
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// Save backend api credentials to a YAML file.
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func (c *Config) Save() error {
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mutex.Lock()
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defer mutex.Unlock()
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c.Sanitize()
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data, err := yaml.Marshal(c)
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if err != nil {
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return err
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}
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c.Propagate()
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if err := os.MkdirAll(filepath.Dir(c.FileName), fs.ModeDir); err != nil {
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return err
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}
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if err := os.WriteFile(c.FileName, data, fs.ModeFile); err != nil {
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return err
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}
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c.Propagate()
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return nil
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}
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