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https://github.com/tailscale/tailscale.git
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client/tailscale: factor out some helpers to reduce boilerplate
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
parent
d4b609e138
commit
03be116997
@ -64,9 +64,8 @@ func DoLocalRequest(req *http.Request) (*http.Response, error) {
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return tsClient.Do(req)
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}
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// WhoIs returns the owner of the remoteAddr, which must be an IP or IP:port.
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func WhoIs(ctx context.Context, remoteAddr string) (*tailcfg.WhoIsResponse, error) {
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req, err := http.NewRequestWithContext(ctx, "GET", "http://local-tailscaled.sock/localapi/v0/whois?addr="+url.QueryEscape(remoteAddr), nil)
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func send(ctx context.Context, method, path string, wantStatus int, body io.Reader) ([]byte, error) {
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req, err := http.NewRequestWithContext(ctx, method, "http://local-tailscaled.sock"+path, body)
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if err != nil {
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return nil, err
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}
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@ -75,60 +74,47 @@ func WhoIs(ctx context.Context, remoteAddr string) (*tailcfg.WhoIsResponse, erro
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return nil, err
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}
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defer res.Body.Close()
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slurp, _ := ioutil.ReadAll(res.Body)
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if res.StatusCode != 200 {
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return nil, fmt.Errorf("HTTP %s: %s", res.Status, slurp)
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slurp, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return nil, err
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}
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if res.StatusCode != wantStatus {
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return nil, fmt.Errorf("HTTP %s: %s (expected %v)", res.Status, slurp, wantStatus)
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}
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return slurp, nil
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}
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func get200(ctx context.Context, path string) ([]byte, error) {
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return send(ctx, "GET", path, 200, nil)
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}
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// WhoIs returns the owner of the remoteAddr, which must be an IP or IP:port.
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func WhoIs(ctx context.Context, remoteAddr string) (*tailcfg.WhoIsResponse, error) {
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body, err := get200(ctx, "/localapi/v0/whois?addr="+url.QueryEscape(remoteAddr))
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if err != nil {
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return nil, err
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}
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r := new(tailcfg.WhoIsResponse)
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if err := json.Unmarshal(slurp, r); err != nil {
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if max := 200; len(slurp) > max {
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slurp = slurp[:max]
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if err := json.Unmarshal(body, r); err != nil {
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if max := 200; len(body) > max {
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body = append(body[:max], "..."...)
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}
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return nil, fmt.Errorf("failed to parse JSON WhoIsResponse from %q", slurp)
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return nil, fmt.Errorf("failed to parse JSON WhoIsResponse from %q", body)
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}
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return r, nil
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}
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// Goroutines returns a dump of the Tailscale daemon's current goroutines.
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func Goroutines(ctx context.Context) ([]byte, error) {
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req, err := http.NewRequestWithContext(ctx, "GET", "http://local-tailscaled.sock/localapi/v0/goroutines", nil)
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if err != nil {
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return nil, err
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}
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res, err := DoLocalRequest(req)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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body, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return nil, err
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}
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if res.StatusCode != 200 {
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return nil, fmt.Errorf("HTTP %s: %s", res.Status, body)
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}
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return body, nil
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return get200(ctx, "/localapi/v0/goroutines")
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}
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// BugReport logs and returns a log marker that can be shared by the user with support.
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func BugReport(ctx context.Context, note string) (string, error) {
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u := fmt.Sprintf("http://local-tailscaled.sock/localapi/v0/bugreport?note=%s", url.QueryEscape(note))
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req, err := http.NewRequestWithContext(ctx, "POST", u, nil)
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body, err := send(ctx, "POST", "/localapi/v0/bugreport?note="+url.QueryEscape(note), 200, nil)
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if err != nil {
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return "", err
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}
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res, err := DoLocalRequest(req)
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if err != nil {
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return "", err
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}
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defer res.Body.Close()
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body, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return "", err
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}
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if res.StatusCode != 200 {
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return "", fmt.Errorf("HTTP %s: %s", res.Status, body)
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}
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return strings.TrimSpace(string(body)), nil
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}
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@ -143,21 +129,12 @@ func StatusWithoutPeers(ctx context.Context) (*ipnstate.Status, error) {
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}
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func status(ctx context.Context, queryString string) (*ipnstate.Status, error) {
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req, err := http.NewRequestWithContext(ctx, "GET", "http://local-tailscaled.sock/localapi/v0/status"+queryString, nil)
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body, err := get200(ctx, "/localapi/v0/status"+queryString)
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if err != nil {
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return nil, err
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}
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res, err := DoLocalRequest(req)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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if res.StatusCode != 200 {
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body, _ := ioutil.ReadAll(res.Body)
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return nil, fmt.Errorf("HTTP %s: %s", res.Status, body)
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}
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st := new(ipnstate.Status)
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if err := json.NewDecoder(res.Body).Decode(st); err != nil {
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if err := json.Unmarshal(body, st); err != nil {
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return nil, err
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}
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return st, nil
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@ -169,41 +146,20 @@ type WaitingFile struct {
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}
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func WaitingFiles(ctx context.Context) ([]WaitingFile, error) {
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req, err := http.NewRequestWithContext(ctx, "GET", "http://local-tailscaled.sock/localapi/v0/files/", nil)
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body, err := get200(ctx, "/localapi/v0/files/")
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if err != nil {
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return nil, err
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}
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res, err := DoLocalRequest(req)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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if res.StatusCode != 200 {
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body, _ := ioutil.ReadAll(res.Body)
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return nil, fmt.Errorf("HTTP %s: %s", res.Status, body)
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}
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var wfs []WaitingFile
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if err := json.NewDecoder(res.Body).Decode(&wfs); err != nil {
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if err := json.Unmarshal(body, &wfs); err != nil {
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return nil, err
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}
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return wfs, nil
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}
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func DeleteWaitingFile(ctx context.Context, baseName string) error {
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req, err := http.NewRequestWithContext(ctx, "DELETE", "http://local-tailscaled.sock/localapi/v0/files/"+url.PathEscape(baseName), nil)
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if err != nil {
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return err
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}
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res, err := DoLocalRequest(req)
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if err != nil {
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return err
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}
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defer res.Body.Close()
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if res.StatusCode != http.StatusNoContent {
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body, _ := ioutil.ReadAll(res.Body)
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return fmt.Errorf("expected 204 No Content; got HTTP %s: %s", res.Status, body)
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}
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return nil
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_, err := send(ctx, "DELETE", "/localapi/v0/files/"+url.PathEscape(baseName), http.StatusNoContent, nil)
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return err
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}
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func GetWaitingFile(ctx context.Context, baseName string) (rc io.ReadCloser, size int64, err error) {
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@ -228,24 +184,14 @@ func GetWaitingFile(ctx context.Context, baseName string) (rc io.ReadCloser, siz
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}
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func CheckIPForwarding(ctx context.Context) error {
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req, err := http.NewRequestWithContext(ctx, "GET", "http://local-tailscaled.sock/localapi/v0/check-ip-forwarding", nil)
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body, err := get200(ctx, "/localapi/v0/check-ip-forwarding")
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if err != nil {
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return err
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}
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res, err := DoLocalRequest(req)
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if err != nil {
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return err
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}
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defer res.Body.Close()
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if res.StatusCode != 200 {
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body, _ := ioutil.ReadAll(res.Body)
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res.Body.Close()
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return fmt.Errorf("HTTP %s: %s", res.Status, body)
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}
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var jres struct {
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Warning string
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}
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if err := json.NewDecoder(res.Body).Decode(&jres); err != nil {
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if err := json.Unmarshal(body, &jres); err != nil {
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return fmt.Errorf("invalid JSON from check-ip-forwarding: %w", err)
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}
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if jres.Warning != "" {
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