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
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* The privileged system principal. */
#include "nscore.h"
#include "SystemPrincipal.h"
#include "mozilla/ClearOnShutdown.h"
#include "nsCOMPtr.h"
#include "nsReadableUtils.h"
#include "nsCRT.h"
#include "nsString.h"
#include "nsIClassInfoImpl.h"
#include "pratom.h"
using namespace mozilla;
NS_IMPL_CLASSINFO(SystemPrincipal, nullptr,
nsIClassInfo::SINGLETON | nsIClassInfo::MAIN_THREAD_ONLY,
NS_SYSTEMPRINCIPAL_CID)
NS_IMPL_QUERY_INTERFACE_CI(SystemPrincipal, nsIPrincipal, nsISerializable)
NS_IMPL_CI_INTERFACE_GETTER(SystemPrincipal, nsIPrincipal, nsISerializable)
static constexpr nsLiteralCString kSystemPrincipalSpec =
"[System Principal]"_ns;
SystemPrincipal::SystemPrincipal()
: BasePrincipal(eSystemPrincipal, kSystemPrincipalSpec,
OriginAttributes()) {}
static StaticMutex sSystemPrincipalMutex;
static StaticRefPtr<SystemPrincipal> sSystemPrincipal
MOZ_GUARDED_BY(sSystemPrincipalMutex);
already_AddRefed<SystemPrincipal> SystemPrincipal::Get() {
StaticMutexAutoLock lock(sSystemPrincipalMutex);
return do_AddRef(sSystemPrincipal);
}
already_AddRefed<SystemPrincipal> SystemPrincipal::Init() {
AssertIsOnMainThread();
StaticMutexAutoLock lock(sSystemPrincipalMutex);
if (MOZ_UNLIKELY(sSystemPrincipal)) {
MOZ_ASSERT_UNREACHABLE("SystemPrincipal::Init() may only be called once");
} else {
sSystemPrincipal = new SystemPrincipal();
}
return do_AddRef(sSystemPrincipal);
}
void SystemPrincipal::Shutdown() {
AssertIsOnMainThread();
StaticMutexAutoLock lock(sSystemPrincipalMutex);
MOZ_ASSERT(sSystemPrincipal);
sSystemPrincipal = nullptr;
}
nsresult SystemPrincipal::GetScriptLocation(nsACString& aStr) {
aStr.Assign(kSystemPrincipalSpec);
return NS_OK;
}
///////////////////////////////////////
// Methods implementing nsIPrincipal //
///////////////////////////////////////
uint32_t SystemPrincipal::GetHashValue() { return NS_PTR_TO_INT32(this); }
NS_IMETHODIMP
SystemPrincipal::GetURI(nsIURI** aURI) {
*aURI = nullptr;
return NS_OK;
}
NS_IMETHODIMP
SystemPrincipal::GetIsOriginPotentiallyTrustworthy(bool* aResult) {
*aResult = true;
return NS_OK;
}
NS_IMETHODIMP
SystemPrincipal::GetDomain(nsIURI** aDomain) {
*aDomain = nullptr;
return NS_OK;
}
NS_IMETHODIMP
SystemPrincipal::SetDomain(nsIURI* aDomain) { return NS_OK; }
NS_IMETHODIMP
SystemPrincipal::GetBaseDomain(nsACString& aBaseDomain) {
// No base domain for chrome.
return NS_OK;
}
NS_IMETHODIMP
SystemPrincipal::GetAddonId(nsAString& aAddonId) {
aAddonId.Truncate();
return NS_OK;
};
//////////////////////////////////////////
// Methods implementing nsISerializable //
//////////////////////////////////////////
NS_IMETHODIMP
SystemPrincipal::Read(nsIObjectInputStream* aStream) {
// no-op: CID is sufficient to identify the mSystemPrincipal singleton
return NS_OK;
}
NS_IMETHODIMP
SystemPrincipal::Write(nsIObjectOutputStream* aStream) {
// Read is used still for legacy principals
MOZ_RELEASE_ASSERT(false, "Old style serialization is removed");
return NS_OK;
}
|
