109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
package main
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import (
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"crypto/tls"
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"encoding/json"
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"fmt"
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"net"
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"net/http"
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"net/url"
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"os"
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"strconv"
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"strings"
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"time"
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)
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const defaultPanelNodePort = 30443
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type panelAccessResult struct {
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url string
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err error
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}
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func setupPanelNodePort() int {
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raw := strings.TrimSpace(os.Getenv("FELIS_PANEL_NODEPORT"))
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if raw == "" {
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return defaultPanelNodePort
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}
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port, err := strconv.Atoi(raw)
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if err != nil || port < 30000 || port > 32767 {
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return defaultPanelNodePort
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}
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return port
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}
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func localPanelURL(rootDomain string) string {
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if ip := rootDomainEmbeddedIP(rootDomain); ip != "" {
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return fmt.Sprintf("https://%s:%d", ip, setupPanelNodePort())
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}
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host := defaultAdminHostname(rootDomain, "")
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if host == "" {
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return ""
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}
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return fmt.Sprintf("https://%s:%d", host, setupPanelNodePort())
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}
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func rootDomainEmbeddedIP(rootDomain string) string {
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domain := strings.TrimSpace(strings.TrimSuffix(rootDomain, "."))
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for _, suffix := range []string{".nip.io", ".sslip.io"} {
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base := strings.TrimSuffix(domain, suffix)
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if base == domain {
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continue
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}
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if ip := net.ParseIP(base); ip != nil {
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return ip.String()
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}
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}
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return ""
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}
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func localPanelOrigin() string {
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return fmt.Sprintf("https://127.0.0.1:%d", setupPanelNodePort())
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}
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func checkPanelAccess(rootDomain string) panelAccessResult {
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base := localPanelURL(rootDomain)
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if base == "" {
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return panelAccessResult{err: fmt.Errorf("root domain is empty")}
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}
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hostURL, err := url.Parse(base)
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if err != nil {
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return panelAccessResult{url: base, err: err}
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}
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probeBase := fmt.Sprintf("https://127.0.0.1:%d", setupPanelNodePort())
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client := &http.Client{
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Timeout: 8 * time.Second,
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Transport: &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: true}}, //nolint:gosec
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}
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for _, target := range []string{probeBase + "/healthz", probeBase + "/", probeBase + "/config.json"} {
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req, err := http.NewRequest(http.MethodGet, target, nil)
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if err != nil {
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return panelAccessResult{url: base, err: err}
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}
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req.Host = hostURL.Hostname()
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resp, err := client.Do(req)
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if err != nil {
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return panelAccessResult{url: base, err: err}
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}
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if resp.Body != nil {
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defer resp.Body.Close()
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}
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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return panelAccessResult{url: base, err: fmt.Errorf("%s returned HTTP %d", target, resp.StatusCode)}
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}
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if strings.HasSuffix(target, "/config.json") {
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var cfg struct {
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APIBase string `json:"apiBase"`
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RootDomain string `json:"rootDomain"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&cfg); err != nil {
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return panelAccessResult{url: base, err: fmt.Errorf("decode config.json: %w", err)}
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}
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if cfg.APIBase != "/api/v1" || cfg.RootDomain == "" {
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return panelAccessResult{url: base, err: fmt.Errorf("config.json is incomplete")}
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}
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}
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}
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return panelAccessResult{url: base}
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}
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