File: scoped_client_impersonation.cc

package info (click to toggle)
chromium 139.0.7258.127-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 6,122,068 kB
  • sloc: cpp: 35,100,771; ansic: 7,163,530; javascript: 4,103,002; python: 1,436,920; asm: 946,517; xml: 746,709; pascal: 187,653; perl: 88,691; sh: 88,436; objc: 79,953; sql: 51,488; cs: 44,583; fortran: 24,137; makefile: 22,147; tcl: 15,277; php: 13,980; yacc: 8,984; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (33 lines) | stat: -rw-r--r-- 1,038 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/windows_services/service_program/scoped_client_impersonation.h"

#include <objbase.h>

#include <ostream>

#include "base/check.h"

ScopedClientImpersonation::ScopedClientImpersonation()
    : result_(::CoGetCallContext(IID_PPV_ARGS(&server_security_))) {
  if (SUCCEEDED(result_)) {
    // Impersonation is not nested, so it is illegal to try to create a new
    // instance while one is already alive. This is prevented, since otherwise
    // the first to destroy their scoper would revert impersonation for all
    // others.
    CHECK(!server_security_->IsImpersonating());
    result_ = server_security_->ImpersonateClient();
    if (FAILED(result_)) {
      server_security_.Reset();
    }
  }
}

ScopedClientImpersonation::~ScopedClientImpersonation() {
  if (server_security_) {
    HRESULT hr = server_security_->RevertToSelf();
    CHECK(SUCCEEDED(hr)) << hr;
  }
}