laconicd/rpc/ethereum/namespaces/debug/utils.go
Tomas Tauber 8e12d94359
rpc: fix ExpandHome restrictions bypass (#667)
`go-home` seems to be using environment variables first
2021-10-13 10:52:05 +00:00

55 lines
1.3 KiB
Go

package debug
import (
"os"
"os/user"
"path/filepath"
"runtime/pprof"
"strings"
"github.com/cosmos/cosmos-sdk/server"
"github.com/tendermint/tendermint/libs/log"
)
// isCPUProfileConfigurationActivated checks if cpuprofile was configured via flag
func isCPUProfileConfigurationActivated(ctx *server.Context) bool {
// TODO: use same constants as server/start.go
// constant declared in start.go cannot be imported (cyclical dependency)
const flagCPUProfile = "cpu-profile"
if cpuProfile := ctx.Viper.GetString(flagCPUProfile); cpuProfile != "" {
return true
}
return false
}
// ExpandHome expands home directory in file paths.
// ~someuser/tmp will not be expanded.
func ExpandHome(p string) (string, error) {
if strings.HasPrefix(p, "~/") || strings.HasPrefix(p, "~\\") {
usr, err := user.Current()
if err != nil {
return p, err
}
home := usr.HomeDir
p = home + p[1:]
}
return filepath.Clean(p), nil
}
// writeProfile writes the data to a file
func writeProfile(name, file string, log log.Logger) error {
p := pprof.Lookup(name)
log.Info("Writing profile records", "count", p.Count(), "type", name, "dump", file)
fp, err := ExpandHome(file)
if err != nil {
return err
}
f, err := os.Create(fp)
if err != nil {
return err
}
defer f.Close()
return p.WriteTo(f, 0)
}