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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "webkit/plugins/npapi/plugin_stream.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "webkit/plugins/npapi/plugin_instance.h" | |
9 | |
10 namespace webkit { | |
11 namespace npapi { | |
12 | |
13 void PluginStream::ResetTempFileHandle() { | |
14 temp_file_handle_ = INVALID_HANDLE_VALUE; | |
15 } | |
16 | |
17 void PluginStream::ResetTempFileName() { | |
18 temp_file_name_[0] = '\0'; | |
19 } | |
20 | |
21 void PluginStream::WriteAsFile() { | |
22 if (RequestedPluginModeIsAsFile()) | |
23 instance_->NPP_StreamAsFile(&stream_, temp_file_name_); | |
24 } | |
25 | |
26 size_t PluginStream::WriteBytes(const char *buf, size_t length) { | |
27 DWORD bytes; | |
28 | |
29 if (!WriteFile(temp_file_handle_, buf, length, &bytes, 0)) | |
30 return 0U; | |
31 | |
32 return static_cast<size_t>(bytes); | |
33 } | |
34 | |
35 bool PluginStream::OpenTempFile() { | |
36 DCHECK_EQ(INVALID_HANDLE_VALUE, temp_file_handle_); | |
37 | |
38 // The reason for using all the Ascii versions of these filesystem | |
39 // calls is that the filename which we pass back to the plugin | |
40 // via NPAPI is an ascii filename. Otherwise, we'd use wide-chars. | |
41 // | |
42 // TODO: | |
43 // This is a bug in NPAPI itself, and it needs to be fixed. | |
44 // The case which will fail is if a user has a multibyte name, | |
45 // but has the system locale set to english. GetTempPathA will | |
46 // return junk in this case, causing us to be unable to open the | |
47 // file. | |
48 | |
49 char temp_directory[MAX_PATH]; | |
50 if (GetTempPathA(MAX_PATH, temp_directory) == 0) | |
51 return false; | |
52 if (GetTempFileNameA(temp_directory, "npstream", 0, temp_file_name_) == 0) | |
53 return false; | |
54 temp_file_handle_ = CreateFileA(temp_file_name_, | |
55 FILE_ALL_ACCESS, | |
56 FILE_SHARE_READ, | |
57 0, | |
58 CREATE_ALWAYS, | |
59 FILE_ATTRIBUTE_NORMAL, | |
60 0); | |
61 if (temp_file_handle_ == INVALID_HANDLE_VALUE) { | |
62 ResetTempFileName(); | |
63 return false; | |
64 } | |
65 return true; | |
66 } | |
67 | |
68 void PluginStream::CloseTempFile() { | |
69 if (!TempFileIsValid()) | |
70 return; | |
71 | |
72 CloseHandle(temp_file_handle_); | |
73 ResetTempFileHandle(); | |
74 } | |
75 | |
76 bool PluginStream::TempFileIsValid() const { | |
77 return temp_file_handle_ != INVALID_HANDLE_VALUE; | |
78 } | |
79 | |
80 } // namespace npapi | |
81 } // namespace webkit | |
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