109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
package server
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import (
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"crypto/subtle"
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"encoding/json"
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"net/http"
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"strings"
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"github.com/longbin/agent-notify/internal/remote"
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)
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func NewHandler(store *Store, token string) http.Handler {
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mux := http.NewServeMux()
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mux.HandleFunc("/healthz", handleHealthz)
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mux.Handle("/api/v1/status", bearerAuth(token, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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switch r.Method {
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case http.MethodPost:
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handleStatusPost(store, w, r)
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case http.MethodGet:
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handleStatusList(store, w, r)
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default:
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http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
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}
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})))
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mux.Handle("/api/v1/meta", bearerAuth(token, http.HandlerFunc(handleMeta(store))))
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return mux
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}
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func handleHealthz(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
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return
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}
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w.WriteHeader(http.StatusOK)
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}
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func bearerAuth(token string, next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if !checkBearer(r, token) {
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http.Error(w, "unauthorized", http.StatusUnauthorized)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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func checkBearer(r *http.Request, token string) bool {
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if token == "" {
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return false
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}
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h := r.Header.Get("Authorization")
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const prefix = "Bearer "
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if len(h) < len(prefix) || !strings.HasPrefix(h, prefix) {
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return false
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}
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got := h[len(prefix):]
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return subtle.ConstantTimeCompare([]byte(got), []byte(token)) == 1
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}
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func handleStatusPost(store *Store, w http.ResponseWriter, r *http.Request) {
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defer r.Body.Close()
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var report remote.StatusReport
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if err := json.NewDecoder(r.Body).Decode(&report); err != nil {
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http.Error(w, "bad json", http.StatusBadRequest)
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return
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}
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if err := store.Upsert(report); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_ = json.NewEncoder(w).Encode(map[string]bool{"ok": true})
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}
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func handleStatusList(store *Store, w http.ResponseWriter, r *http.Request) {
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filters := ListFilters{
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Host: r.URL.Query().Get("host"),
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CWD: r.URL.Query().Get("cwd"),
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Agent: r.URL.Query().Get("agent"),
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Status: r.URL.Query().Get("status"),
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}
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rows, err := store.List(filters)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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if rows == nil {
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rows = []SessionRow{}
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}
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w.Header().Set("Content-Type", "application/json")
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_ = json.NewEncoder(w).Encode(rows)
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}
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func handleMeta(store *Store) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
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return
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}
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meta, err := store.Meta()
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_ = json.NewEncoder(w).Encode(meta)
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}
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}
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