459 lines
13 KiB
Go
459 lines
13 KiB
Go
// bilibili B站执行器（无浏览器投稿 + API 扫码登录）。
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// 协议依据：ForgQi/biliup（MIT）bili_webup.py 的 upos/bda2 上传链路。
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package bilibili
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"everypublish/agentcore/internal/exec"
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"everypublish/agentcore/internal/vault"
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"everypublish/shared/proto"
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)
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// Executor B站投稿执行器
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type Executor struct {
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Vault *vault.Vault
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HTTP *http.Client
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MemberBase string // 投稿 API 基址（测试可替换）
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PassportBase string // 登录 API 基址（测试可替换）
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UpOSScheme string // upos 上传协议（默认 https，测试 http）
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PollTimeout time.Duration // 扫码轮询总时长（默认 3 分钟）
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}
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// New 构造执行器
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func New(v *vault.Vault) *Executor {
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return &Executor{
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Vault: v,
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HTTP: &http.Client{Timeout: 30 * time.Second},
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MemberBase: "https://member.bilibili.com",
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PassportBase: "https://passport.bilibili.com",
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UpOSScheme: "https",
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PollTimeout: 3 * time.Minute,
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}
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}
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// Platform 平台标识
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func (e *Executor) Platform() string { return "bilibili" }
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// credentials 凭据（保险库 JSON）
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type credentials struct {
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Cookies string `json:"cookies"`
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}
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// Execute 发布：下载素材 → upos 上传 → 投稿 → 返回作品链接
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func (e *Executor) Execute(ctx context.Context, task exec.Task) exec.Result {
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fail := func(err string) exec.Result {
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return exec.Result{TaskID: task.TaskID, Status: "failed", Error: err}
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}
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creds, err := e.creds(task.AccountID)
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if err != nil {
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return fail("B站账号未登录（本地无凭据），请先在客户端完成扫码绑定")
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}
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if len(task.MaterialURLs) == 0 {
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return fail("任务缺少素材")
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}
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videoPath, cleanup, err := downloadFile(ctx, e.HTTP, task.MaterialURLs[0])
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if err != nil {
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return fail("素材下载失败: " + err.Error())
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}
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defer cleanup()
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part, err := e.uploadVideo(ctx, creds.Cookies, videoPath)
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if err != nil {
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return fail("视频上传失败: " + err.Error())
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}
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bvid, err := e.submit(ctx, creds.Cookies, task, part)
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if err != nil {
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return fail("投稿提交失败: " + err.Error())
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}
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return exec.Result{
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TaskID: task.TaskID,
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Status: "success",
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PublishedURL: "https://www.bilibili.com/video/" + bvid,
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}
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}
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func (e *Executor) creds(accountID string) (*credentials, error) {
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raw, err := e.Vault.Load(accountID)
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if err != nil {
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return nil, err
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}
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var c credentials
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if err = json.Unmarshal(raw, &c); err != nil {
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return nil, err
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}
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if c.Cookies == "" {
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return nil, fmt.Errorf("empty cookies")
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}
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return &c, nil
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}
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// uploadVideo 上传视频（upos/bda2 分片），返回投稿所需的 part 信息
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func (e *Executor) uploadVideo(ctx context.Context, cookies, filePath string) (map[string]interface{}, error) {
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stat, err := os.Stat(filePath)
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if err != nil {
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return nil, err
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}
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name := filepath.Base(filePath)
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total := stat.Size()
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// 1) preupload 获取上传地址
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q := url.Values{}
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q.Set("r", "upos")
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q.Set("profile", "ugcupos/bup")
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q.Set("ssl", "0")
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q.Set("version", "2.8.12")
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q.Set("build", "2081200")
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q.Set("name", name)
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q.Set("size", strconv.FormatInt(total, 10))
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preURL := e.MemberBase + "/preupload?upcdn=bda2&probe_version=20221109&" + q.Encode()
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var pre struct {
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OK int `json:"OK"`
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Endpoint string `json:"endpoint"`
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Auth string `json:"auth"`
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BizID int `json:"biz_id"`
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UposURI string `json:"upos_uri"`
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ChunkSize int `json:"chunk_size"`
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}
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if err = e.getJSON(ctx, preURL, cookies, &pre); err != nil {
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return nil, err
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}
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if pre.OK != 1 || pre.UposURI == "" {
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return nil, fmt.Errorf("preupload 返回异常")
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}
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upURL := e.UpOSScheme + ":" + pre.Endpoint + "/" + strings.TrimPrefix(pre.UposURI, "upos://")
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authH := map[string]string{"X-Upos-Auth": pre.Auth}
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// 2) 申请 upload_id
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var up struct {
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UploadID string `json:"upload_id"`
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}
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if err = e.postJSON(ctx, upURL+"?uploads&output=json", cookies, authH, nil, &up); err != nil {
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return nil, fmt.Errorf("申请 upload_id 失败: %w", err)
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}
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// 3) 分片上传
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chunkSize := pre.ChunkSize
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if chunkSize <= 0 {
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chunkSize = 7 * 1024 * 1024
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}
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chunks := int((total + int64(chunkSize) - 1) / int64(chunkSize))
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f, err := os.Open(filePath)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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parts := make([]map[string]interface{}, 0, chunks)
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buf := make([]byte, chunkSize)
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for i := 0; i < chunks; i++ {
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n, rerr := io.ReadFull(f, buf)
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if rerr != nil && rerr != io.ErrUnexpectedEOF && rerr != io.EOF {
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return nil, rerr
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}
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start := i * chunkSize
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end := start + n
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pq := url.Values{}
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pq.Set("uploadId", up.UploadID)
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pq.Set("partNumber", strconv.Itoa(i+1))
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pq.Set("chunk", strconv.Itoa(i))
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pq.Set("chunks", strconv.Itoa(chunks))
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pq.Set("size", strconv.Itoa(n))
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pq.Set("start", strconv.Itoa(start))
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pq.Set("end", strconv.Itoa(end))
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pq.Set("total", strconv.FormatInt(total, 10))
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if err = e.putBody(ctx, upURL+"?"+pq.Encode(), cookies, authH, buf[:n]); err != nil {
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return nil, fmt.Errorf("分片 %d 上传失败: %w", i+1, err)
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}
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parts = append(parts, map[string]interface{}{"partNumber": i + 1, "eTag": "etag"})
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}
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// 4) 合并分片
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mq := url.Values{}
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mq.Set("name", name)
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mq.Set("uploadId", up.UploadID)
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mq.Set("biz_id", strconv.Itoa(pre.BizID))
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mq.Set("output", "json")
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mq.Set("profile", "ugcupos/bup")
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var merged struct {
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OK int `json:"OK"`
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}
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if err = e.postJSON(ctx, upURL+"?"+mq.Encode(), cookies, authH, map[string]interface{}{"parts": parts}, &merged); err != nil {
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return nil, err
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}
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if merged.OK != 1 {
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return nil, fmt.Errorf("分片合并返回异常")
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}
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return map[string]interface{}{
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"title": strings.TrimSuffix(name, filepath.Ext(name)),
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"filename": strings.TrimSuffix(filepath.Base(pre.UposURI), filepath.Ext(filepath.Base(pre.UposURI))),
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"desc": "",
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}, nil
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}
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// submit 投稿（x/vu/web/add）
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func (e *Executor) submit(ctx context.Context, cookies string, task exec.Task, part map[string]interface{}) (string, error) {
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csrf := cookieValue(cookies, "bili_jct")
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// 风控预热（失败不影响）
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_, _ = e.get(ctx, e.MemberBase+"/x/geetest/pre/add", cookies)
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tag := strings.Join(task.Tags, ",")
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if tag == "" {
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tag = "日常"
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}
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body := map[string]interface{}{
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"title": truncateRunes(task.Title, 80),
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"desc": task.Content,
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"desc_v2": []map[string]interface{}{{"raw_text": task.Content, "type": 1, "biz_id": ""}},
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"copyright": 1,
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"source": "",
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"tid": 174,
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"tag": tag,
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"dynamic": "",
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"videos": []map[string]interface{}{part},
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}
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var ret struct {
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Code int `json:"code"`
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Message string `json:"message"`
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Data struct {
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Bvid string `json:"bvid"`
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} `json:"data"`
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}
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if err := e.postJSON(ctx, e.MemberBase+"/x/vu/web/add?csrf="+csrf, cookies, nil, body, &ret); err != nil {
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return "", err
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}
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if ret.Code != 0 {
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return "", fmt.Errorf("code=%d %s", ret.Code, ret.Message)
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}
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return ret.Data.Bvid, nil
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}
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// SolveChallenge B站扫码登录：生成二维码 → onQR 展示 → 轮询 → 保存 cookie
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func (e *Executor) SolveChallenge(ctx context.Context, ch proto.Challenge, onQR func(qrToken, qrURL string)) (bool, string) {
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key, qrURL, err := e.generateQR(ctx)
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if err != nil {
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return false, ""
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}
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if onQR != nil {
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onQR(key, qrURL)
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}
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deadline := time.Now().Add(e.PollTimeout)
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for time.Now().Before(deadline) {
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select {
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case <-ctx.Done():
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return false, ""
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default:
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}
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code, cookieURL, perr := e.pollQR(ctx, key)
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if perr != nil {
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return false, ""
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}
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switch code {
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case 0:
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cookies := cookiesFromCrossDomainURL(cookieURL)
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if cookies == "" {
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return false, ""
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}
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_ = e.Vault.Save(ch.AccountID, []byte(`{"cookies":"`+jsonEscape(cookies)+`"}`))
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return true, "confirmed"
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case 86090:
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case 86101:
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default:
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return false, ""
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}
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time.Sleep(2 * time.Second)
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}
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return false, ""
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}
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// generateQR 生成登录二维码
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func (e *Executor) generateQR(ctx context.Context) (key, qrURL string, err error) {
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var ret struct {
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Code int `json:"code"`
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Data struct {
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URL string `json:"url"`
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QrcodeKey string `json:"qrcode_key"`
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} `json:"data"`
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}
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if err = e.getJSON(ctx, e.PassportBase+"/x/passport-login/web/qrcode/generate", "", &ret); err != nil {
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return "", "", err
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}
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if ret.Code != 0 || ret.Data.QrcodeKey == "" {
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return "", "", fmt.Errorf("生成二维码失败 code=%d", ret.Code)
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}
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return ret.Data.QrcodeKey, ret.Data.URL, nil
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}
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// pollQR 轮询扫码状态：86101 未扫 / 86090 已扫待确认 / 0 成功（返回跨域 cookie URL）
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func (e *Executor) pollQR(ctx context.Context, key string) (int, string, error) {
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var ret struct {
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Code int `json:"code"`
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Data struct {
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URL string `json:"url"`
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} `json:"data"`
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}
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if err := e.getJSON(ctx, e.PassportBase+"/x/passport-login/web/qrcode/poll?qrcode_key="+key, "", &ret); err != nil {
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return 0, "", err
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}
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return ret.Code, ret.Data.URL, nil
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}
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// ---- HTTP 辅助 ----
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func (e *Executor) get(ctx context.Context, rawURL, cookies string) ([]byte, error) {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, rawURL, nil)
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if err != nil {
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return nil, err
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}
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if cookies != "" {
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req.Header.Set("Cookie", cookies)
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}
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req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/120 Safari/537.36")
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req.Header.Set("Referer", "https://member.bilibili.com")
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resp, err := e.HTTP.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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return io.ReadAll(resp.Body)
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}
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func (e *Executor) getJSON(ctx context.Context, rawURL, cookies string, out interface{}) error {
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raw, err := e.get(ctx, rawURL, cookies)
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if err != nil {
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return err
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}
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return json.Unmarshal(raw, out)
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}
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func (e *Executor) postJSON(ctx context.Context, rawURL, cookies string, extraH map[string]string, body interface{}, out interface{}) error {
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var buf bytes.Buffer
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if body != nil {
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raw, _ := json.Marshal(body)
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buf.Write(raw)
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, rawURL, &buf)
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if err != nil {
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return err
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}
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if cookies != "" {
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req.Header.Set("Cookie", cookies)
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}
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for k, v := range extraH {
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req.Header.Set(k, v)
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}
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/120 Safari/537.36")
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req.Header.Set("Referer", "https://member.bilibili.com")
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resp, err := e.HTTP.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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raw, _ := io.ReadAll(resp.Body)
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if resp.StatusCode >= 400 {
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return fmt.Errorf("http %d", resp.StatusCode)
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}
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if out == nil {
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return nil
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}
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return json.Unmarshal(raw, out)
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}
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func (e *Executor) putBody(ctx context.Context, rawURL, cookies string, extraH map[string]string, data []byte) error {
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req, err := http.NewRequestWithContext(ctx, http.MethodPut, rawURL, bytes.NewReader(data))
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if err != nil {
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return err
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}
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if cookies != "" {
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req.Header.Set("Cookie", cookies)
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}
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for k, v := range extraH {
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req.Header.Set(k, v)
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}
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resp, err := e.HTTP.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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if resp.StatusCode >= 400 {
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return fmt.Errorf("http %d", resp.StatusCode)
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}
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return nil
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}
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// downloadFile 下载素材到临时文件
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func downloadFile(ctx context.Context, client *http.Client, rawURL string) (string, func(), error) {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, rawURL, nil)
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if err != nil {
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return "", nil, err
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}
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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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if resp.StatusCode != http.StatusOK {
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return "", nil, fmt.Errorf("下载 http %d", resp.StatusCode)
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}
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tmp, err := os.CreateTemp("", "ep-material-*")
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if err != nil {
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return "", nil, err
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}
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_, err = io.Copy(tmp, resp.Body)
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tmp.Close()
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if err != nil {
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os.Remove(tmp.Name())
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return "", nil, err
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}
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return tmp.Name(), func() { _ = os.Remove(tmp.Name()) }, nil
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}
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// cookieValue 从 cookie 串取值
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func cookieValue(cookies, key string) string {
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for _, part := range strings.Split(cookies, ";") {
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part = strings.TrimSpace(part)
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if i := strings.Index(part, "="); i > 0 && part[:i] == key {
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return part[i+1:]
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}
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}
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return ""
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}
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// cookiesFromCrossDomainURL 从跨域跳转 URL 提取登录 cookie
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func cookiesFromCrossDomainURL(rawURL string) string {
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u, err := url.Parse(rawURL)
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if err != nil {
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return ""
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}
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q := u.Query()
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sess := q.Get("SESSDATA")
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jct := q.Get("bili_jct")
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dede := q.Get("DedeUserID")
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if sess == "" {
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return ""
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}
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return "SESSDATA=" + sess + "; bili_jct=" + jct + "; DedeUserID=" + dede
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}
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func truncateRunes(s string, max int) string {
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r := []rune(s)
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if len(r) <= max {
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return s
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}
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return string(r[:max])
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}
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func jsonEscape(s string) string {
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raw, _ := json.Marshal(s)
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return string(raw[1 : len(raw)-1])
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}
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