From dccb3666080686da73159680590352c23cf69c4f Mon Sep 17 00:00:00 2001 From: Ophestra Date: Sun, 23 Feb 2025 18:02:33 +0900 Subject: [PATCH] ldd: handle behaviour on static executable Signed-off-by: Ophestra --- ldd/exec.go | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/ldd/exec.go b/ldd/exec.go index 0676937..4e5de47 100644 --- a/ldd/exec.go +++ b/ldd/exec.go @@ -1,10 +1,10 @@ package ldd import ( + "bytes" "context" "os" "os/exec" - "strings" "time" "git.gensokyo.uk/security/fortify/helper" @@ -13,6 +13,10 @@ import ( const lddTimeout = 2 * time.Second +var ( + msgStaticGlibc = []byte("not a dynamic executable") +) + func Exec(ctx context.Context, p string) ([]*Entry, error) { var h helper.Helper @@ -32,8 +36,8 @@ func Exec(ctx context.Context, p string) ([]*Entry, error) { return nil, err } - stdout := new(strings.Builder) - h.Stdout(stdout).Stderr(os.Stderr) + stdout, stderr := new(bytes.Buffer), new(bytes.Buffer) + h.Stdout(stdout).Stderr(stderr) c, cancel := context.WithTimeout(ctx, lddTimeout) defer cancel() @@ -41,6 +45,12 @@ func Exec(ctx context.Context, p string) ([]*Entry, error) { return nil, err } if err := h.Wait(); err != nil { + m := stderr.Bytes() + if bytes.Contains(m, msgStaticGlibc) { + return nil, nil + } + + _, _ = os.Stderr.Write(m) return nil, err }