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// check_imported_libraries.go checks that each of its arguments only imports 16// allowed libraries. This is used to avoid accidental dependencies on 17// libstdc++.so. 18package main 19 20import ( 21 "debug/elf" 22 "fmt" 23 "os" 24) 25 26func checkImportedLibraries(path string) { 27 file, err := elf.Open(path) 28 if err != nil { 29 fmt.Fprintf(os.Stderr, "Error opening %s: %s\n", path, err) 30 os.Exit(1) 31 } 32 defer file.Close() 33 34 libs, err := file.ImportedLibraries() 35 if err != nil { 36 fmt.Fprintf(os.Stderr, "Error reading %s: %s\n", path, err) 37 os.Exit(1) 38 } 39 40 for _, lib := range libs { 41 if lib != "libc.so.6" && lib != "libcrypto.so" && lib != "libpthread.so.0" { 42 fmt.Printf("Invalid dependency for %s: %s\n", path, lib) 43 fmt.Printf("All dependencies:\n") 44 for _, lib := range libs { 45 fmt.Printf(" %s\n", lib) 46 } 47 os.Exit(1) 48 } 49 } 50} 51 52func main() { 53 for _, path := range os.Args[1:] { 54 checkImportedLibraries(path) 55 } 56} 57