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1 // Copyright 2007-2009 Google Inc. | |
2 // | |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 // you may not use this file except in compliance with the License. | |
5 // You may obtain a copy of the License at | |
6 // | |
7 // http://www.apache.org/licenses/LICENSE-2.0 | |
8 // | |
9 // Unless required by applicable law or agreed to in writing, software | |
10 // distributed under the License is distributed on an "AS IS" BASIS, | |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 // See the License for the specific language governing permissions and | |
13 // limitations under the License. | |
14 // ======================================================================== | |
15 | |
16 #include "omaha/net/winhttp_vtable.h" | |
17 | |
18 namespace omaha { | |
19 | |
20 bool WinHttpVTable::Load() { | |
21 if (IsLoaded()) { | |
22 return true; | |
23 } | |
24 Clear(); | |
25 library_ = ::LoadLibrary(_T("winhttp")); | |
26 if (!library_) { | |
27 library_ = ::LoadLibrary(_T("winhttp5")); | |
28 if (!library_) { | |
29 return false; | |
30 } | |
31 } | |
32 bool is_valid = | |
33 GPA("WinHttpAddRequestHeaders", &WinHttpAddRequestHeaders_pointer) && | |
34 GPA("WinHttpCheckPlatform", &WinHttpCheckPlatform_pointer) && | |
35 GPA("WinHttpCloseHandle", &WinHttpCloseHandle_pointer) && | |
36 GPA("WinHttpConnect", &WinHttpConnect_pointer) && | |
37 GPA("WinHttpCrackUrl", &WinHttpCrackUrl_pointer) && | |
38 GPA("WinHttpCreateUrl", &WinHttpCreateUrl_pointer) && | |
39 GPA("WinHttpDetectAutoProxyConfigUrl", &WinHttpDetectAutoProxyConfigUrl_poi
nter) && // NOLINT | |
40 GPA("WinHttpGetIEProxyConfigForCurrentUser", &WinHttpGetIEProxyConfigForCur
rentUser_pointer) && // NOLINT | |
41 GPA("WinHttpGetDefaultProxyConfiguration", &WinHttpGetDefaultProxyConfigura
tion_pointer) && // NOLINT | |
42 GPA("WinHttpGetProxyForUrl", &WinHttpGetProxyForUrl_pointer) && | |
43 GPA("WinHttpOpen", &WinHttpOpen_pointer) && | |
44 GPA("WinHttpOpenRequest", &WinHttpOpenRequest_pointer) && | |
45 GPA("WinHttpQueryAuthSchemes", &WinHttpQueryAuthSchemes_pointer) && | |
46 GPA("WinHttpQueryDataAvailable", &WinHttpQueryDataAvailable_pointer) &
& // NOLINT | |
47 GPA("WinHttpQueryHeaders", &WinHttpQueryHeaders_pointer) && | |
48 GPA("WinHttpQueryOption", &WinHttpQueryOption_pointer) && | |
49 GPA("WinHttpReadData", &WinHttpReadData_pointer) && | |
50 GPA("WinHttpReceiveResponse", &WinHttpReceiveResponse_pointer) && | |
51 GPA("WinHttpSendRequest", &WinHttpSendRequest_pointer) && | |
52 GPA("WinHttpSetDefaultProxyConfiguration", &WinHttpSetDefaultProxyConfigura
tion_pointer) && // NOLINT | |
53 GPA("WinHttpSetCredentials", &WinHttpSetCredentials_pointer) && | |
54 GPA("WinHttpSetOption", &WinHttpSetOption_pointer) && | |
55 GPA("WinHttpSetStatusCallback", &WinHttpSetStatusCallback_pointer) && | |
56 GPA("WinHttpSetTimeouts", &WinHttpSetTimeouts_pointer) && | |
57 GPA("WinHttpWriteData", &WinHttpWriteData_pointer); | |
58 | |
59 if (!is_valid) { | |
60 Unload(); | |
61 } | |
62 return is_valid; | |
63 } | |
64 | |
65 void WinHttpVTable::Unload() { | |
66 if (library_) { | |
67 ::FreeLibrary(library_); | |
68 library_ = NULL; | |
69 } | |
70 Clear(); | |
71 } | |
72 | |
73 } // namespace omaha | |
74 | |
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