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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| package common | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "github.com/alist-org/alist/v3/internal/model" | ||
| "github.com/pkg/errors" | ||
| log "github.com/sirupsen/logrus" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "net/url" | ||
| "os" | ||
| "strconv" | ||
| "strings" | ||
| ) | ||
|
|
||
| var HttpClient = &http.Client{} | ||
|
|
||
| func Proxy(w http.ResponseWriter, r *http.Request, link *model.Link, file model.Obj) error { | ||
| // read data with native | ||
| var err error | ||
| if link.Data != nil { | ||
| defer func() { | ||
| _ = link.Data.Close() | ||
| }() | ||
| w.Header().Set("Content-Type", "application/octet-stream") | ||
| w.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"; filename*=UTF-8''%s`, file.GetName(), url.QueryEscape(file.GetName()))) | ||
| w.Header().Set("Content-Length", strconv.FormatInt(file.GetSize(), 10)) | ||
| if link.Header != nil { | ||
| for h, val := range link.Header { | ||
| w.Header()[h] = val | ||
| } | ||
| } | ||
| if link.Status == 0 { | ||
| w.WriteHeader(http.StatusOK) | ||
| } else { | ||
| w.WriteHeader(link.Status) | ||
| } | ||
| _, err = io.Copy(w, link.Data) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
| // local file | ||
| if link.FilePath != nil && *link.FilePath != "" { | ||
| f, err := os.Open(*link.FilePath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer func() { | ||
| _ = f.Close() | ||
| }() | ||
| fileStat, err := os.Stat(*link.FilePath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| w.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"; filename*=UTF-8''%s`, file.GetName(), url.QueryEscape(file.GetName()))) | ||
| http.ServeContent(w, r, file.GetName(), fileStat.ModTime(), f) | ||
| return nil | ||
| } else { | ||
| req, err := http.NewRequest(r.Method, link.URL, nil) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| for h, val := range r.Header { | ||
| if strings.ToLower(h) == "authorization" { | ||
| continue | ||
| } | ||
| req.Header[h] = val | ||
| } | ||
| for h, val := range link.Header { | ||
| req.Header[h] = val | ||
| } | ||
| res, err := HttpClient.Do(req) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer func() { | ||
| _ = res.Body.Close() | ||
| }() | ||
| log.Debugf("proxy status: %d", res.StatusCode) | ||
| for h, v := range res.Header { | ||
| w.Header()[h] = v | ||
| } | ||
| w.WriteHeader(res.StatusCode) | ||
| if res.StatusCode >= 400 { | ||
| all, _ := ioutil.ReadAll(res.Body) | ||
| msg := string(all) | ||
| log.Debugln(msg) | ||
| return errors.New(msg) | ||
| } | ||
| _, err = io.Copy(w, res.Body) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| package controllers | ||
|
|
||
| import ( | ||
| "github.com/alist-org/alist/v3/internal/db" | ||
| "github.com/alist-org/alist/v3/internal/driver" | ||
| "github.com/alist-org/alist/v3/internal/errs" | ||
| "github.com/alist-org/alist/v3/internal/fs" | ||
| "github.com/alist-org/alist/v3/internal/model" | ||
| "github.com/alist-org/alist/v3/internal/setting" | ||
| "github.com/alist-org/alist/v3/internal/sign" | ||
| "github.com/alist-org/alist/v3/pkg/utils" | ||
| "github.com/alist-org/alist/v3/server/common" | ||
| "github.com/gin-gonic/gin" | ||
| "github.com/pkg/errors" | ||
| stdpath "path" | ||
| "strings" | ||
| ) | ||
|
|
||
| func Down(c *gin.Context) { | ||
| rawPath := parsePath(c.Param("path")) | ||
| filename := stdpath.Base(rawPath) | ||
| meta, err := db.GetNearestMeta(rawPath) | ||
| if err != nil { | ||
| if !errors.Is(errors.Cause(err), errs.MetaNotFound) { | ||
| common.ErrorResp(c, err, 500, true) | ||
| return | ||
| } | ||
| } | ||
| // verify sign | ||
| if needSign(meta, rawPath) { | ||
| s := c.Param("sign") | ||
| err = sign.Verify(filename, s) | ||
| if err != nil { | ||
| common.ErrorResp(c, err, 401, true) | ||
| return | ||
| } | ||
| } | ||
| account, err := fs.GetAccount(rawPath) | ||
| if err != nil { | ||
| common.ErrorResp(c, err, 500, true) | ||
| return | ||
| } | ||
| if needProxy(account, filename) { | ||
| link, err := fs.Link(c, rawPath, model.LinkArgs{ | ||
| Header: c.Request.Header, | ||
| }) | ||
| if err != nil { | ||
| common.ErrorResp(c, err, 500, true) | ||
| return | ||
| } | ||
| obj, err := fs.Get(c, rawPath) | ||
| if err != nil { | ||
| common.ErrorResp(c, err, 500, true) | ||
| return | ||
| } | ||
| err = common.Proxy(c.Writer, c.Request, link, obj) | ||
| if err != nil { | ||
| common.ErrorResp(c, err, 500, true) | ||
| return | ||
| } | ||
| } else { | ||
| link, err := fs.Link(c, rawPath, model.LinkArgs{ | ||
| IP: c.ClientIP(), | ||
| Header: c.Request.Header, | ||
| }) | ||
| if err != nil { | ||
| common.ErrorResp(c, err, 500, true) | ||
| return | ||
| } | ||
| c.Redirect(302, link.URL) | ||
| } | ||
| } | ||
|
|
||
| // TODO: implement | ||
| // path maybe contains # ? etc. | ||
| func parsePath(path string) string { | ||
| return utils.StandardizePath(path) | ||
| } | ||
|
|
||
| func needSign(meta *model.Meta, path string) bool { | ||
| if meta == nil || meta.Password == "" { | ||
| return false | ||
| } | ||
| if !meta.SubFolder && path != meta.Path { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
|
|
||
| func needProxy(account driver.Driver, filename string) bool { | ||
| config := account.Config() | ||
| if config.MustProxy() { | ||
| return true | ||
| } | ||
| proxyTypes := setting.GetByKey("proxy_types") | ||
| if strings.Contains(proxyTypes, utils.Ext(filename)) { | ||
| return true | ||
| } | ||
| return false | ||
| } |
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