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- // Copyright (c) 2017, Google Inc.
- //
- // Permission to use, copy, modify, and/or distribute this software for any
- // purpose with or without fee is hereby granted, provided that the above
- // copyright notice and this permission notice appear in all copies.
- //
- // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- // SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
- // check_imported_libraries.go checks that each of its arguments only imports a
- // whitelist of allowed libraries. This is used to avoid accidental dependencies
- // on libstdc++.so.
- package main
-
- import (
- "debug/elf"
- "fmt"
- "os"
- )
-
- func checkImportedLibraries(path string) {
- file, err := elf.Open(path)
- if err != nil {
- fmt.Fprintf(os.Stderr, "Error opening %s: %s\n", path, err)
- os.Exit(1)
- }
- defer file.Close()
-
- libs, err := file.ImportedLibraries()
- if err != nil {
- fmt.Fprintf(os.Stderr, "Error reading %s: %s\n", path, err)
- os.Exit(1)
- }
-
- for _, lib := range libs {
- if lib != "libc.so.6" && lib != "libcrypto.so" && lib != "libpthread.so.0" {
- fmt.Printf("Invalid dependency for %s: %s\n", path, lib)
- fmt.Printf("All dependencies:\n")
- for _, lib := range libs {
- fmt.Printf(" %s\n", lib)
- }
- os.Exit(1)
- }
- }
- }
-
- func main() {
- for _, path := range os.Args[1:] {
- checkImportedLibraries(path)
- }
- }
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