274 lines
7.4 KiB
Go
274 lines
7.4 KiB
Go
package app
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import (
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"context"
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"database/sql"
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"embed"
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"encoding/json"
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"errors"
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"fmt"
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"html/template"
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"io"
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"log"
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"net"
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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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"time"
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_ "github.com/go-sql-driver/mysql"
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)
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//go:embed templates/*.html static/*
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var webFiles embed.FS
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type Server struct {
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cfg Config
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db *sql.DB
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templates *template.Template
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client *http.Client
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packageClient *http.Client
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}
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type technician struct {
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Login string
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DisplayName string
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CSRFToken string
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}
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type packageRecord struct {
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ID uint64
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Slug string
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DisplayName string
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PackageName string
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PackageVersion string
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FileName string
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SHA256 string
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Enabled bool
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}
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type actionRecord struct {
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Slug string
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DisplayName string
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Enabled bool
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}
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type authorizationRecord struct {
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ID uint64
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CodeHint string
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CreatedBy string
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CustomerLabel string
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HostLimit int
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HostCount int
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CreatedAt time.Time
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ExpiresAt time.Time
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RevokedAt sql.NullTime
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Packages string
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Actions string
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}
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type auditRecord struct {
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EventType string
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Actor string
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Hostname string
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PackageSlug string
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SourceIP string
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Details string
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CreatedAt time.Time
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}
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type pageData struct {
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Title string
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Technician *technician
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CSRFToken string
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Authorizations []authorizationRecord
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AuditEvents []auditRecord
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Packages []packageRecord
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Actions []actionRecord
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NewCode string
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DefaultHostLimit int
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DefaultDuration string
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Error string
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Notice string
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GiteaLoginURL string
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}
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func New(cfg Config) (*Server, error) {
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db, err := sql.Open("mysql", cfg.DatabaseDSN)
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if err != nil {
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return nil, err
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}
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db.SetConnMaxLifetime(5 * time.Minute)
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db.SetMaxOpenConns(20)
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db.SetMaxIdleConns(10)
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := db.PingContext(ctx); err != nil {
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_ = db.Close()
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return nil, fmt.Errorf("database: %w", err)
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}
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templates, err := parseTemplates()
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if err != nil {
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_ = db.Close()
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return nil, err
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}
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return &Server{
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cfg: cfg,
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db: db,
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templates: templates,
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client: &http.Client{
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Timeout: 30 * time.Second,
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CheckRedirect: func(req *http.Request, via []*http.Request) error {
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if len(via) >= 5 {
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return errors.New("too many redirects")
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}
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return nil
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},
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},
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packageClient: &http.Client{
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Transport: &http.Transport{
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Proxy: http.ProxyFromEnvironment,
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DialContext: (&net.Dialer{Timeout: 10 * time.Second}).DialContext,
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TLSHandshakeTimeout: 10 * time.Second,
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ResponseHeaderTimeout: 30 * time.Second,
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IdleConnTimeout: 90 * time.Second,
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},
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CheckRedirect: func(req *http.Request, via []*http.Request) error {
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if len(via) >= 5 {
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return errors.New("too many redirects")
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}
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return nil
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},
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},
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}, nil
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}
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func parseTemplates() (*template.Template, error) {
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return template.New("").Funcs(template.FuncMap{
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"formatTime": func(value time.Time) string {
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return value.Local().Format("Jan 2, 2006 3:04 PM")
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},
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"isActive": func(record authorizationRecord) bool {
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return !record.RevokedAt.Valid && time.Now().Before(record.ExpiresAt)
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},
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}).ParseFS(webFiles, "templates/*.html")
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}
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func (s *Server) Close() error {
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return s.db.Close()
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}
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func (s *Server) Routes() http.Handler {
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mux := http.NewServeMux()
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mux.HandleFunc("GET /health/live", s.handleLive)
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mux.HandleFunc("GET /health/ready", s.handleReady)
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mux.HandleFunc("GET /auth/login", s.handleLogin)
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mux.HandleFunc("GET /auth/callback", s.handleCallback)
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mux.HandleFunc("POST /auth/logout", s.handleLogout)
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mux.HandleFunc("GET /portal", s.requireTechnician(s.handlePortal))
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mux.HandleFunc("POST /portal/authorizations", s.requireTechnician(s.handleCreateAuthorization))
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mux.HandleFunc("POST /portal/authorizations/{id}/revoke", s.requireTechnician(s.handleRevokeAuthorization))
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mux.HandleFunc("POST /portal/packages", s.requireTechnician(s.handleUpsertPackage))
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mux.HandleFunc("POST /portal/packages/upload", s.requireTechnician(s.handleUploadPackage))
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mux.HandleFunc("POST /api/v1/exchange", s.handleExchange)
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mux.HandleFunc("GET /api/v1/packages/{slug}", s.handlePackageDownload)
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mux.HandleFunc("GET /", s.handleHome)
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mux.Handle("GET /static/", http.FileServerFS(webFiles))
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return s.securityHeaders(s.requestLog(mux))
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}
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func (s *Server) handleLive(w http.ResponseWriter, _ *http.Request) {
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writeJSON(w, http.StatusOK, map[string]string{"status": "live"})
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}
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func (s *Server) handleReady(w http.ResponseWriter, r *http.Request) {
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ctx, cancel := context.WithTimeout(r.Context(), 2*time.Second)
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defer cancel()
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if err := s.db.PingContext(ctx); err != nil {
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writeJSON(w, http.StatusServiceUnavailable, map[string]string{"status": "database unavailable"})
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return
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}
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writeJSON(w, http.StatusOK, map[string]string{"status": "ready"})
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}
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func (s *Server) handleHome(w http.ResponseWriter, r *http.Request) {
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tech, _ := s.currentTechnician(r)
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if tech != nil {
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http.Redirect(w, r, "/portal", http.StatusSeeOther)
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return
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}
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s.render(w, "login.html", pageData{
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Title: "TAPM Deployment Access",
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GiteaLoginURL: "/auth/login",
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})
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}
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func (s *Server) render(w http.ResponseWriter, name string, data pageData) {
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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if err := s.templates.ExecuteTemplate(w, name, data); err != nil {
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log.Printf("render %s: %v", name, err)
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}
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}
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func (s *Server) clientIP(r *http.Request) string {
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if s.cfg.TrustProxyHeaders {
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if forwarded := strings.TrimSpace(strings.Split(r.Header.Get("X-Forwarded-For"), ",")[0]); forwarded != "" {
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return forwarded
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}
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}
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host, _, err := net.SplitHostPort(r.RemoteAddr)
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if err == nil {
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return host
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}
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return r.RemoteAddr
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}
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func (s *Server) securityHeaders(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Security-Policy", "default-src 'self'; style-src 'self'; script-src 'self'; frame-ancestors 'none'; base-uri 'self'; form-action 'self'")
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w.Header().Set("Referrer-Policy", "no-referrer")
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w.Header().Set("X-Content-Type-Options", "nosniff")
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w.Header().Set("X-Frame-Options", "DENY")
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w.Header().Set("Permissions-Policy", "camera=(), microphone=(), geolocation=()")
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next.ServeHTTP(w, r)
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})
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}
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func (s *Server) requestLog(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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started := time.Now()
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next.ServeHTTP(w, r)
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log.Printf("%s %s ip=%s duration=%s", r.Method, r.URL.Path, s.clientIP(r), time.Since(started).Round(time.Millisecond))
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})
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}
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func writeJSON(w http.ResponseWriter, status int, value any) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(status)
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_ = json.NewEncoder(w).Encode(value)
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}
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func parseUintPath(r *http.Request, name string) (uint64, error) {
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return strconv.ParseUint(r.PathValue(name), 10, 64)
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}
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func joinURL(base *url.URL, path string) string {
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result := *base
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result.Path = strings.TrimRight(result.Path, "/") + "/" + strings.TrimLeft(path, "/")
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return result.String()
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}
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func copyResponse(w http.ResponseWriter, response *http.Response) {
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for _, header := range []string{"Content-Type", "Content-Length", "Content-Disposition"} {
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if value := response.Header.Get(header); value != "" {
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w.Header().Set(header, value)
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}
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}
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w.WriteHeader(response.StatusCode)
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_, _ = io.Copy(w, response.Body)
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}
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