mirror of
https://github.com/truewhile/MeBox.git
synced 2026-09-30 03:36:37 +08:00
376 lines
11 KiB
Go
376 lines
11 KiB
Go
package cloud
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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)
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// pan115Provider implements 115 网盘 via cookie auth.
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//
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// 115 has removed its desktop clients, so cookies must come from the mobile
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// app / web (115.com) or a QR-code login (see QR* helpers below). Directory
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// listing uses the public web API; download resolves a file's pickcode to a
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// CDN URL that, like Alist's default 115 behaviour, is served by 302 redirect.
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type pan115Provider struct {
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cookie string
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ua string
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webBase string // https://webapi.115.com (override in tests)
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proBase string // https://proapi.115.com (override in tests)
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client *http.Client
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proxy bool
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// downURLPayload fetches and decrypts the app/chrome/downurl response for a
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// pickcode, returning the raw JSON payload (map of file id -> info). It is a
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// seam so tests can bypass the live 115 crypto/transport.
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downURLPayload func(ctx context.Context, pickcode string) ([]byte, error)
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}
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const (
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pan115WebBase = "https://webapi.115.com"
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pan115ProBase = "https://proapi.115.com"
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)
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func new115(cfg map[string]any, client *http.Client) *pan115Provider {
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web := str(cfg["base"])
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if web == "" {
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web = pan115WebBase
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}
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ua := str(cfg["ua"])
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if ua == "" {
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ua = defaultUA
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}
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// 115 CDN download URLs work with a plain 302 (Alist's recommended mode),
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// so offload by default. The global cloud playback setting decides whether
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// clients receive a STRMURL entry or a /Videos stream entry.
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proxy := false
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pro := str(cfg["pro_base"])
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if pro == "" {
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pro = pan115ProBase
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}
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p := &pan115Provider{
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cookie: str(cfg["cookie"]),
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ua: ua,
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webBase: strings.TrimRight(web, "/"),
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proBase: strings.TrimRight(pro, "/"),
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client: client,
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proxy: proxy,
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}
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p.downURLPayload = p.fetchDownURLPayload
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return p
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}
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func (p *pan115Provider) Type() string { return Type115 }
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func (p *pan115Provider) get(ctx context.Context, u string) (*http.Response, error) {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, u, nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Cookie", p.cookie)
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req.Header.Set("User-Agent", p.ua)
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req.Header.Set("Accept", "application/json, text/plain, */*")
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return p.client.Do(req)
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}
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func (p *pan115Provider) Ping(ctx context.Context) error {
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if p.cookie == "" {
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return fmt.Errorf("115: missing cookie")
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}
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_, err := p.List(ctx, "0")
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return err
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}
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func (p *pan115Provider) List(ctx context.Context, dirID string) ([]FileEntry, error) {
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if dirID == "" {
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dirID = "0"
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}
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const pageSize = 100
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out := make([]FileEntry, 0, pageSize)
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for offset := 0; ; offset += pageSize {
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q := url.Values{}
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q.Set("aid", "1")
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q.Set("cid", dirID)
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q.Set("o", "user_ptime")
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q.Set("asc", "0")
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q.Set("offset", strconv.Itoa(offset))
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q.Set("show_dir", "1")
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q.Set("limit", strconv.Itoa(pageSize))
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q.Set("format", "json")
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resp, err := p.get(ctx, p.webBase+"/files?"+q.Encode())
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if err != nil {
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return nil, err
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}
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var r struct {
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State bool `json:"state"`
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Error string `json:"error"`
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Data []struct {
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Fid string `json:"fid"` // file id (files only)
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Cid string `json:"cid"` // category id (dirs use this)
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N string `json:"n"` // name
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S json.Number `json:"s"` // size
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Pc string `json:"pc"` // pickcode
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} `json:"data"`
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}
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err = json.NewDecoder(resp.Body).Decode(&r)
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_ = resp.Body.Close()
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if err != nil {
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return nil, fmt.Errorf("115: decode list: %w", err)
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}
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if !r.State {
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return nil, fmt.Errorf("115: list failed: %s", r.Error)
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}
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for _, it := range r.Data {
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isDir := it.Fid == ""
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id := it.Fid
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if isDir {
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id = it.Cid
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}
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size, _ := it.S.Int64()
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out = append(out, FileEntry{
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ID: id,
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Name: it.N,
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IsDir: isDir,
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Size: size,
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PickCode: it.Pc,
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})
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}
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if len(r.Data) < pageSize {
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break
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}
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}
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return out, nil
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}
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// Resolve accepts a pickcode (preferred) and returns the CDN download URL.
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//
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// 115 deprecated the plain web /files/download endpoint (it no longer returns
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// file_url for ordinary cookies). We use the current app/chrome/downurl
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// endpoint, which takes an m115-encrypted body and returns an m115-encrypted
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// payload mapping the file id to a short-lived, OSS-signed CDN URL suitable for
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// a 302 redirect (the same approach Alist's 115 driver uses).
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func (p *pan115Provider) Resolve(ctx context.Context, pickcode string) (*DirectLink, error) {
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if pickcode == "" {
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return nil, fmt.Errorf("115: empty pickcode")
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}
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raw, err := p.downURLPayload(ctx, pickcode)
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if err != nil {
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return nil, err
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}
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var payload map[string]struct {
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FileName string `json:"file_name"`
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FileSize json.Number `json:"file_size"`
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URL struct {
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URL string `json:"url"`
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} `json:"url"`
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}
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if err := json.Unmarshal(raw, &payload); err != nil {
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return nil, fmt.Errorf("115: decode downurl: %w", err)
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}
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for _, info := range payload {
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if info.URL.URL == "" {
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continue
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}
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return &DirectLink{
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URL: info.URL.URL,
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Headers: map[string]string{
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"User-Agent": p.ua,
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"Cookie": p.cookie,
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},
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Proxy: p.proxy,
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}, nil
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}
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return nil, fmt.Errorf("115: download failed: no url")
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}
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// fetchDownURLPayload performs the live encrypted app/chrome/downurl request and
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// returns the decrypted JSON payload.
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func (p *pan115Provider) fetchDownURLPayload(ctx context.Context, pickcode string) ([]byte, error) {
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key := m115GenerateKey()
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params, err := json.Marshal(map[string]string{"pickcode": pickcode})
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if err != nil {
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return nil, err
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}
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form := url.Values{}
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form.Set("data", m115Encode(params, key))
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u := fmt.Sprintf("%s/app/chrome/downurl?t=%d", p.proBase, nowUnix())
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, u, strings.NewReader(form.Encode()))
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if err != nil {
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return nil, err
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}
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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req.Header.Set("Cookie", p.cookie)
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req.Header.Set("User-Agent", p.ua)
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req.Header.Set("Accept", "application/json, text/plain, */*")
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resp, err := p.client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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var r struct {
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State bool `json:"state"`
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Error string `json:"error"`
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Data string `json:"data"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
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return nil, fmt.Errorf("115: decode downurl: %w", err)
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}
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if !r.State || r.Data == "" {
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msg := r.Error
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if msg == "" {
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msg = "no data"
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}
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return nil, fmt.Errorf("115: download failed: %s", msg)
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}
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out, err := m115Decode(r.Data, key)
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if err != nil {
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return nil, fmt.Errorf("115: decrypt downurl: %w", err)
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}
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return out, nil
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}
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// nowUnix is a seam for deterministic tests.
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var nowUnix = func() int64 { return timeNow().Unix() }
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// ─── QR-code login ───────────────────────────────────────────────────────────
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// QRSession is the handle returned by QRStart; the client renders QRImageURL
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// and polls QRPoll until it returns a cookie.
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type QRSession struct {
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UID string `json:"uid"`
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Time int64 `json:"time"`
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Sign string `json:"sign"`
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QRImageURL string `json:"qr_image_url"`
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}
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// QR login hosts (overridable for tests).
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var (
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qr115APIBase = "https://qrcodeapi.115.com"
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qr115PassportBase = "https://passportapi.115.com"
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)
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// QRStart obtains a 115 QR-code login token + image URL.
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func QRStart(ctx context.Context, client *http.Client) (*QRSession, error) {
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if client == nil {
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client = http.DefaultClient
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}
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req, _ := http.NewRequestWithContext(ctx, http.MethodGet, qr115APIBase+"/api/1.0/web/1.0/token/", nil)
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req.Header.Set("User-Agent", defaultUA)
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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var r struct {
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State int `json:"state"`
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Data struct {
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UID string `json:"uid"`
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Time int64 `json:"time"`
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Sign string `json:"sign"`
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} `json:"data"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
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return nil, fmt.Errorf("115 qr: decode token: %w", err)
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}
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if r.State != 1 || r.Data.UID == "" {
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return nil, fmt.Errorf("115 qr: token request failed")
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}
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return &QRSession{
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UID: r.Data.UID,
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Time: r.Data.Time,
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Sign: r.Data.Sign,
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QRImageURL: qr115APIBase + "/api/1.0/web/1.0/qrcode?uid=" + url.QueryEscape(r.Data.UID),
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}, nil
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}
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// QRStatus is the poll result.
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type QRStatus struct {
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// State is one of: "waiting" (not scanned), "scanned" (scanned, awaiting
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// confirmation), "confirmed" (login approved; Cookie populated),
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// "expired" (token expired/cancelled).
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State string `json:"state"`
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Cookie string `json:"cookie,omitempty"`
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}
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// QRPoll checks the QR session status; on confirmation it exchanges the token
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// for a session cookie via the passport API.
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func QRPoll(ctx context.Context, client *http.Client, sess *QRSession) (*QRStatus, error) {
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if client == nil {
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client = http.DefaultClient
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}
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if sess == nil || sess.UID == "" {
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return nil, fmt.Errorf("115 qr: nil session")
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}
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q := url.Values{}
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q.Set("uid", sess.UID)
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q.Set("time", strconv.FormatInt(sess.Time, 10))
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q.Set("sign", sess.Sign)
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q.Set("_", strconv.FormatInt(timeNow().UnixMilli(), 10))
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req, _ := http.NewRequestWithContext(ctx, http.MethodGet, qr115APIBase+"/get/status/?"+q.Encode(), nil)
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req.Header.Set("User-Agent", defaultUA)
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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var r struct {
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State int `json:"state"`
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Data struct {
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Status int `json:"status"` // 0 waiting, 1 scanned, 2 confirmed, -1/-2 expired
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} `json:"data"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
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return nil, fmt.Errorf("115 qr: decode status: %w", err)
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}
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switch r.Data.Status {
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case 1:
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return &QRStatus{State: "scanned"}, nil
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case 2:
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cookie, err := qr115Exchange(ctx, client, sess.UID)
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if err != nil {
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return nil, err
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}
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return &QRStatus{State: "confirmed", Cookie: cookie}, nil
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case 0:
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return &QRStatus{State: "waiting"}, nil
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default:
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return &QRStatus{State: "expired"}, nil
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}
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}
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// qr115Exchange swaps an approved uid for a session cookie.
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func qr115Exchange(ctx context.Context, client *http.Client, uid string) (string, error) {
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form := url.Values{}
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form.Set("account", uid)
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form.Set("app", "web")
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req, _ := http.NewRequestWithContext(ctx, http.MethodPost, qr115PassportBase+"/app/1.0/web/1.0/login/qrcode/", strings.NewReader(form.Encode()))
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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req.Header.Set("User-Agent", defaultUA)
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resp, err := client.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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var r struct {
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State int `json:"state"`
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Data struct {
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Cookie map[string]string `json:"cookie"`
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} `json:"data"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
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return "", fmt.Errorf("115 qr: decode login: %w", err)
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}
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if r.State != 1 || len(r.Data.Cookie) == 0 {
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return "", fmt.Errorf("115 qr: login exchange failed")
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}
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parts := make([]string, 0, len(r.Data.Cookie))
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for k, v := range r.Data.Cookie {
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parts = append(parts, k+"="+v)
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}
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return strings.Join(parts, "; "), nil
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}
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