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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.
//go:build ignore
// check_imported_libraries.go checks that each of its arguments only imports
// 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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