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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/* 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/. */
#include "nsCOMPtr.h"
#include "nsIInputStream.h"
#include "nsNetUtil.h"
#include "nsIFileURL.h"
#include "nsIJARURI.h"
#include "nsIResProtocolHandler.h"
#include "nsIChromeRegistry.h"
#include "nsStringStream.h"
#include "StartupCacheUtils.h"
#include "mozilla/scache/StartupCache.h"
#include "mozilla/Omnijar.h"
namespace mozilla {
namespace scache {
nsresult NewObjectInputStreamFromBuffer(const char* buffer, uint32_t len,
nsIObjectInputStream** stream) {
nsCOMPtr<nsIInputStream> stringStream;
nsresult rv = NS_NewByteInputStream(getter_AddRefs(stringStream),
Span(buffer, len), NS_ASSIGNMENT_DEPEND);
MOZ_ALWAYS_SUCCEEDS(rv);
nsCOMPtr<nsIObjectInputStream> objectInput =
NS_NewObjectInputStream(stringStream);
objectInput.forget(stream);
return NS_OK;
}
nsresult NewObjectOutputWrappedStorageStream(
nsIObjectOutputStream** wrapperStream, nsIStorageStream** stream,
bool wantDebugStream) {
nsCOMPtr<nsIStorageStream> storageStream;
nsresult rv =
NS_NewStorageStream(256, UINT32_MAX, getter_AddRefs(storageStream));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIOutputStream> outputStream = do_QueryInterface(storageStream);
nsCOMPtr<nsIObjectOutputStream> objectOutput =
NS_NewObjectOutputStream(outputStream);
#ifdef DEBUG
if (wantDebugStream) {
// Wrap in debug stream to detect unsupported writes of
// multiply-referenced non-singleton objects
StartupCache* sc = StartupCache::GetSingleton();
NS_ENSURE_TRUE(sc, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIObjectOutputStream> debugStream;
sc->GetDebugObjectOutputStream(objectOutput, getter_AddRefs(debugStream));
debugStream.forget(wrapperStream);
} else {
objectOutput.forget(wrapperStream);
}
#else
objectOutput.forget(wrapperStream);
#endif
storageStream.forget(stream);
return NS_OK;
}
nsresult NewBufferFromStorageStream(nsIStorageStream* storageStream,
UniqueFreePtr<char[]>* buffer,
uint32_t* len) {
nsresult rv;
nsCOMPtr<nsIInputStream> inputStream;
rv = storageStream->NewInputStream(0, getter_AddRefs(inputStream));
NS_ENSURE_SUCCESS(rv, rv);
uint64_t avail64;
rv = inputStream->Available(&avail64);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(avail64 <= UINT32_MAX, NS_ERROR_FILE_TOO_BIG);
uint32_t avail = (uint32_t)avail64;
auto temp = UniqueFreePtr<char[]>(
reinterpret_cast<char*>(malloc(sizeof(char) * avail)));
uint32_t read;
rv = inputStream->Read(temp.get(), avail, &read);
if (NS_SUCCEEDED(rv) && avail != read) rv = NS_ERROR_UNEXPECTED;
if (NS_FAILED(rv)) {
return rv;
}
*len = avail;
*buffer = std::move(temp);
return NS_OK;
}
static const char baseName[2][5] = {"gre/", "app/"};
static inline bool canonicalizeBase(nsAutoCString& spec, nsACString& out) {
nsAutoCString greBase, appBase;
nsresult rv = mozilla::Omnijar::GetURIString(mozilla::Omnijar::GRE, greBase);
if (NS_FAILED(rv) || !greBase.Length()) return false;
rv = mozilla::Omnijar::GetURIString(mozilla::Omnijar::APP, appBase);
if (NS_FAILED(rv)) return false;
bool underGre = StringBeginsWith(spec, greBase);
bool underApp = appBase.Length() && StringBeginsWith(spec, appBase);
if (!underGre && !underApp) return false;
/**
* At this point, if both underGre and underApp are true, it can be one
* of the two following cases:
* - the GRE directory points to a subdirectory of the APP directory,
* meaning spec points under GRE.
* - the APP directory points to a subdirectory of the GRE directory,
* meaning spec points under APP.
* Checking the GRE and APP path length is enough to know in which case
* we are.
*/
if (underGre && underApp && greBase.Length() < appBase.Length())
underGre = false;
out.AppendLiteral("/resource/");
out.Append(
baseName[underGre ? mozilla::Omnijar::GRE : mozilla::Omnijar::APP]);
out.Append(Substring(spec, underGre ? greBase.Length() : appBase.Length()));
return true;
}
/**
* ResolveURI transforms a chrome: or resource: URI into the URI for its
* underlying resource, or returns any other URI unchanged.
*/
nsresult ResolveURI(nsIURI* in, nsIURI** out) {
nsresult rv;
// Resolve resource:// URIs. At the end of this if/else block, we
// have both spec and uri variables identifying the same URI.
if (in->SchemeIs("resource")) {
nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIProtocolHandler> ph;
rv = ioService->GetProtocolHandler("resource", getter_AddRefs(ph));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIResProtocolHandler> irph(do_QueryInterface(ph, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString spec;
rv = irph->ResolveURI(in, spec);
NS_ENSURE_SUCCESS(rv, rv);
return ioService->NewURI(spec, nullptr, nullptr, out);
}
if (in->SchemeIs("chrome")) {
nsCOMPtr<nsIChromeRegistry> chromeReg =
mozilla::services::GetChromeRegistry();
if (!chromeReg) return NS_ERROR_UNEXPECTED;
return chromeReg->ConvertChromeURL(in, out);
}
*out = do_AddRef(in).take();
return NS_OK;
}
static nsresult PathifyURIImpl(nsIURI* in, nsACString& out) {
nsCOMPtr<nsIURI> uri;
nsresult rv = ResolveURI(in, getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString spec;
rv = uri->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
if (!canonicalizeBase(spec, out)) {
if (uri->SchemeIs("file")) {
nsCOMPtr<nsIFileURL> baseFileURL;
baseFileURL = do_QueryInterface(uri, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString path;
rv = baseFileURL->GetPathQueryRef(path);
NS_ENSURE_SUCCESS(rv, rv);
out.Append(path);
} else if (uri->SchemeIs("jar")) {
nsCOMPtr<nsIJARURI> jarURI = do_QueryInterface(uri, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> jarFileURI;
rv = jarURI->GetJARFile(getter_AddRefs(jarFileURI));
NS_ENSURE_SUCCESS(rv, rv);
rv = PathifyURIImpl(jarFileURI, out);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString path;
rv = jarURI->GetJAREntry(path);
NS_ENSURE_SUCCESS(rv, rv);
out.Append('/');
out.Append(path);
} else { // Very unlikely
rv = uri->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
out.Append('/');
out.Append(spec);
}
}
return NS_OK;
}
nsresult PathifyURI(const char* loaderType, size_t loaderTypeLength, nsIURI* in,
nsACString& out) {
out.AssignASCII(loaderType, loaderTypeLength);
return PathifyURIImpl(in, out);
}
} // namespace scache
} // namespace mozilla
|
