Files
orca/internal/daemon/pprof.go
T
Jon Chery a81bbb2bcf fix(P09): daemon auth hardening (REQ-123, REQ-124, F6, F24)
---ci---
project: orca
phase: 9
milestone: v0.12
status: execute
---/ci---

- Start() refuses plaintext mode (mTLS required, R-021/REQ-123).
- bodyLimitMiddleware wraps all handlers with MaxBytesReader (1 MiB,
  REQ-124/F24).
- pprof loopback-only (isLoopback check; non-loopback refused with
  clear error, REQ-123).
2 new pprof loopback tests + existing daemon tests pass. Full build
+ vet green.
2026-08-07 11:16:16 +00:00

76 lines
2.2 KiB
Go

package daemon
import (
"errors"
"fmt"
"log/slog"
"net"
"net/http"
"net/http/pprof"
"strings"
"time"
)
// isLoopback reports whether the address binds to a loopback interface
// (127.0.0.1, ::1, localhost). REQ-123: pprof must be loopback-only.
func isLoopback(addr string) bool {
host, _, err := net.SplitHostPort(addr)
if err != nil {
host = addr
}
host = strings.TrimSpace(host)
if host == "" || host == "localhost" {
return true
}
ip := net.ParseIP(host)
if ip != nil {
return ip.IsLoopback()
}
return false
}
func StartPprof(addr string, log *slog.Logger) (*http.Server, error) {
if addr == "" {
return nil, nil
}
// REQ-123: pprof must bind to loopback only. Non-loopback addresses
// require explicit --pprof-allow-public confirmation (which the CLI
// passes after a warning). We refuse non-loopback here by default.
if !isLoopback(addr) {
log.Error("pprof refuses non-loopback bind",
slog.String("addr", addr),
slog.String("reason", "REQ-123: pprof is unauthenticated; use --pprof-allow-public to override (operator-only)"))
return nil, fmt.Errorf("pprof: refusing non-loopback bind %s (REQ-123; unauthenticated; use --pprof-allow-public)", addr)
}
mux := http.NewServeMux()
mux.HandleFunc("/debug/pprof/", pprof.Index)
mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
mux.Handle("/debug/pprof/heap", pprof.Handler("heap"))
mux.Handle("/debug/pprof/goroutine", pprof.Handler("goroutine"))
mux.Handle("/debug/pprof/threadcreate", pprof.Handler("threadcreate"))
mux.Handle("/debug/pprof/block", pprof.Handler("block"))
mux.Handle("/debug/pprof/mutex", pprof.Handler("mutex"))
server := &http.Server{
Addr: addr,
Handler: mux,
ReadHeaderTimeout: 5 * time.Second,
}
log.Warn("pprof endpoint exposed",
slog.String("addr", addr),
slog.String("warning", "unauthenticated, operator-only — do not expose publicly"))
go func() {
err := server.ListenAndServe()
if err != nil && !errors.Is(err, http.ErrServerClosed) {
log.Error("pprof server stopped", slog.String("addr", addr), slog.Any("err", err))
}
}()
return server, nil
}