1// Copyright (c) 2017, Google Inc. 2// 3// Permission to use, copy, modify, and/or distribute this software for any 4// purpose with or without fee is hereby granted, provided that the above 5// copyright notice and this permission notice appear in all copies. 6// 7// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 8// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 9// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 10// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 11// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 12// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 13// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 14 15//go:build ignore 16 17// check_imported_libraries.go checks that each of its arguments only imports 18// allowed libraries. This is used to avoid accidental dependencies on 19// libstdc++.so. 20package main 21 22import ( 23 "debug/elf" 24 "fmt" 25 "os" 26) 27 28func checkImportedLibraries(path string) { 29 file, err := elf.Open(path) 30 if err != nil { 31 fmt.Fprintf(os.Stderr, "Error opening %s: %s\n", path, err) 32 os.Exit(1) 33 } 34 defer file.Close() 35 36 libs, err := file.ImportedLibraries() 37 if err != nil { 38 fmt.Fprintf(os.Stderr, "Error reading %s: %s\n", path, err) 39 os.Exit(1) 40 } 41 42 for _, lib := range libs { 43 if lib != "libc.so.6" && lib != "libcrypto.so" && lib != "libpthread.so.0" { 44 fmt.Printf("Invalid dependency for %s: %s\n", path, lib) 45 fmt.Printf("All dependencies:\n") 46 for _, lib := range libs { 47 fmt.Printf(" %s\n", lib) 48 } 49 os.Exit(1) 50 } 51 } 52} 53 54func main() { 55 for _, path := range os.Args[1:] { 56 checkImportedLibraries(path) 57 } 58} 59