mirror of
https://github.com/hanzozt/sdk-golang.git
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zeekay
285bb5a76b
- Repo names: ziti-* → zt-* - Go modules: github.com/hanzozt/ziti → github.com/hanzozt/zt - Docker images: hanzozt/ziti-* → hanzozt/zt-* - C/Java/JS symbols: ziti_* → zt_* - File and directory names updated
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
//go:build windows
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/*
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Copyright 2019 NetFoundry Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package posture
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import (
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"crypto/sha1"
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"debug/pe"
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"fmt"
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"os"
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"strings"
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"go.mozilla.org/pkcs7"
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)
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func isProcessPath(expectedPath, processPath string) bool {
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return strings.Contains(strings.ToLower(expectedPath), strings.ToLower(processPath))
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}
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func getSignerFingerprints(filePath string) ([]string, error) {
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peFile, err := pe.Open(filePath)
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if err != nil {
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return nil, err
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}
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defer peFile.Close()
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var virtualAddress uint32
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var size uint32
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switch t := peFile.OptionalHeader.(type) {
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case *pe.OptionalHeader32:
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virtualAddress = t.DataDirectory[pe.IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress
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size = t.DataDirectory[pe.IMAGE_DIRECTORY_ENTRY_SECURITY].Size
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case *pe.OptionalHeader64:
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virtualAddress = t.DataDirectory[pe.IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress
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size = t.DataDirectory[pe.IMAGE_DIRECTORY_ENTRY_SECURITY].Size
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}
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if virtualAddress <= 0 || size <= 0 {
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return nil, nil
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}
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binaryFile, err := os.Open(filePath)
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if err != nil {
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return nil, fmt.Errorf("failed to open process file: %v", err)
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}
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defer binaryFile.Close()
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pkcs7Signature := make([]byte, int64(size))
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_, _ = binaryFile.ReadAt(pkcs7Signature, int64(virtualAddress+8))
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pkcs7Obj, err := pkcs7.Parse(pkcs7Signature)
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if err != nil {
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return nil, fmt.Errorf("failed to parse pkcs7 block: %v", err)
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}
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var signerFingerprints []string
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for _, cert := range pkcs7Obj.Certificates {
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signerFingerprint := fmt.Sprintf("%x", sha1.Sum(cert.Raw))
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signerFingerprints = append(signerFingerprints, signerFingerprint)
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}
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return signerFingerprints, nil
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}
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