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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 // IBindStatusCallback interface. | |
17 | |
18 #include "omaha/net/bind_status_callback.h" | |
19 #include <wininet.h> | |
20 #include "omaha/base/debug.h" | |
21 #include "omaha/base/error.h" | |
22 #include "omaha/base/logging.h" | |
23 #include "omaha/base/utils.h" | |
24 | |
25 namespace omaha { | |
26 | |
27 HRESULT QueryHttpInfo(IWinInetHttpInfo* http_info, DWORD query, CString* info) { | |
28 CORE_LOG(L3, (_T("[QueryHttpInfo][%d]"), query)); | |
29 ASSERT1(http_info); | |
30 ASSERT1(query); | |
31 ASSERT1(info); | |
32 | |
33 info->Empty(); | |
34 DWORD size = 0; | |
35 DWORD flags = 0; | |
36 HRESULT hr = http_info->QueryInfo(query, 0, &size, &flags, 0); | |
37 CORE_LOG(L3, (_T("[http_info->QueryInfo][0x%x][%d]"), hr, size)); | |
38 if (FAILED(hr)) { | |
39 return hr; | |
40 } | |
41 | |
42 CStringA buf; | |
43 hr = http_info->QueryInfo(query, CStrBufA(buf, size), &size, &flags, 0); | |
44 CORE_LOG(L3, (_T("[http_info->QueryInfo][0x%x][%d]"), hr, size)); | |
45 if (FAILED(hr)) { | |
46 return hr; | |
47 } | |
48 | |
49 CORE_LOG(L3, (_T("[QueryHttpInfo success][%d][%s]"), query, CA2T(buf))); | |
50 *info = buf; | |
51 return S_OK; | |
52 } | |
53 | |
54 BindStatusCallback::BindStatusCallback() | |
55 : http_verb_(BINDVERB_GET), | |
56 post_data_byte_count_(0), | |
57 response_code_(0) { | |
58 } | |
59 | |
60 HRESULT BindStatusCallback::Send(BSTR url, | |
61 BSTR post_data, | |
62 BSTR request_headers, | |
63 VARIANT response_headers_needed, | |
64 VARIANT* response_headers, | |
65 DWORD* response_code, | |
66 BSTR* cache_filename) { | |
67 if (!url || !*url || !response_code || !cache_filename) { | |
68 return E_INVALIDARG; | |
69 } | |
70 | |
71 *response_code = 0; | |
72 *cache_filename = NULL; | |
73 | |
74 if (V_VT(&response_headers_needed) != VT_EMPTY) { | |
75 if ((V_VT(&response_headers_needed) != (VT_ARRAY | VT_UI4)) || | |
76 !response_headers) { | |
77 return E_INVALIDARG; | |
78 } | |
79 V_VT(response_headers) = VT_NULL; | |
80 response_headers_needed_ = response_headers_needed.parray; | |
81 if (!response_headers_needed_.GetCount()) { | |
82 return E_INVALIDARG; | |
83 } | |
84 } | |
85 | |
86 request_headers_ = request_headers; | |
87 if (!post_data) { | |
88 http_verb_ = BINDVERB_GET; | |
89 } else { | |
90 http_verb_ = BINDVERB_POST; | |
91 post_data_byte_count_ = ::SysStringByteLen(post_data); | |
92 reset(post_data_, ::GlobalAlloc(GPTR, post_data_byte_count_)); | |
93 if (!post_data_) { | |
94 HRESULT hr = HRESULTFromLastError(); | |
95 CORE_LOG(LE, (_T("[::GlobalAlloc failed][0x%x]"), hr)); | |
96 return hr; | |
97 } | |
98 | |
99 memcpy(get(post_data_), post_data, post_data_byte_count_); | |
100 } | |
101 | |
102 CComPtr<IBindStatusCallback> bsc(this); | |
103 CString filename; | |
104 HRESULT hr = ::URLDownloadToCacheFile(NULL, | |
105 url, | |
106 CStrBuf(filename, MAX_PATH), | |
107 MAX_PATH, | |
108 0, | |
109 bsc); | |
110 | |
111 if (response_headers) { | |
112 response_headers_.Detach(response_headers); | |
113 } | |
114 *response_code = response_code_; | |
115 | |
116 CORE_LOG(L2, (_T("[URLDownloadToCacheFile][0x%x][%s]"), hr, url)); | |
117 if (FAILED(hr)) { | |
118 return hr; | |
119 } | |
120 | |
121 ASSERT1(!filename.IsEmpty()); | |
122 CORE_LOG(L2, (_T("[BindStatusCallback::Send][cache file][%s]"), filename)); | |
123 *cache_filename = filename.AllocSysString(); | |
124 return hr; | |
125 } | |
126 | |
127 // IBindStatusCallback methods. | |
128 | |
129 STDMETHODIMP BindStatusCallback::OnStartBinding(DWORD, IBinding* binding) { | |
130 __mutexScope(lock_); | |
131 binding_git_.Attach(binding); | |
132 return S_OK; | |
133 } | |
134 | |
135 STDMETHODIMP BindStatusCallback::GetPriority(LONG* priority) { | |
136 UNREFERENCED_PARAMETER(priority); | |
137 return E_NOTIMPL; | |
138 } | |
139 | |
140 STDMETHODIMP BindStatusCallback::OnLowResource(DWORD) { | |
141 return E_NOTIMPL; | |
142 } | |
143 | |
144 STDMETHODIMP BindStatusCallback::OnProgress(ULONG, ULONG, ULONG, LPCWSTR) { | |
145 return E_NOTIMPL; | |
146 } | |
147 | |
148 STDMETHODIMP BindStatusCallback::OnStopBinding(HRESULT, LPCWSTR) { | |
149 CComPtr<IBinding> binding; | |
150 | |
151 __mutexBlock(lock_) { | |
152 if (!binding_git_) { | |
153 return S_OK; | |
154 } | |
155 | |
156 HRESULT hr = binding_git_.CopyTo(&binding); | |
157 VERIFY1(SUCCEEDED(binding_git_.Revoke())); | |
158 if (FAILED(hr)) { | |
159 CORE_LOG(LW, (_T("[binding_git_.CopyTo failed][0x%x]"), hr)); | |
160 return S_OK; | |
161 } | |
162 } | |
163 | |
164 CComQIPtr<IWinInetHttpInfo> http_info(binding); | |
165 if (!http_info) { | |
166 return S_OK; | |
167 } | |
168 | |
169 CString response_code_buf; | |
170 if (SUCCEEDED(QueryHttpInfo(http_info, | |
171 HTTP_QUERY_STATUS_CODE, | |
172 &response_code_buf)) && | |
173 !response_code_buf.IsEmpty()) { | |
174 response_code_ = _ttoi(response_code_buf); | |
175 } | |
176 | |
177 if (!response_headers_needed_) { | |
178 return S_OK; | |
179 } | |
180 int count = response_headers_needed_.GetCount(); | |
181 ASSERT1(count > 0); | |
182 int lower_bound = response_headers_needed_.GetLowerBound(); | |
183 int upper_bound = response_headers_needed_.GetUpperBound(); | |
184 | |
185 CComSafeArray<BSTR> response_array(count, lower_bound); | |
186 for (int i = lower_bound; i <= upper_bound; ++i) { | |
187 CString response_header_buf; | |
188 QueryHttpInfo(http_info, response_headers_needed_[i], &response_header_buf); | |
189 response_array[i] = response_header_buf.AllocSysString(); | |
190 } | |
191 | |
192 V_VT(&response_headers_) = VT_ARRAY | VT_BSTR; | |
193 V_ARRAY(&response_headers_) = response_array.Detach(); | |
194 return S_OK; | |
195 } | |
196 | |
197 STDMETHODIMP BindStatusCallback::GetBindInfo(DWORD* flags, BINDINFO* info) { | |
198 ASSERT1(flags); | |
199 ASSERT1(info); | |
200 *flags = 0; | |
201 | |
202 // Set up the BINDINFO data structure. | |
203 info->cbSize = sizeof(*info); | |
204 info->dwBindVerb = http_verb_; | |
205 info->szExtraInfo = NULL; | |
206 | |
207 // Initialize the STGMEDIUM. | |
208 SetZero(info->stgmedData); | |
209 info->grfBindInfoF = 0; | |
210 info->szCustomVerb = NULL; | |
211 | |
212 switch (http_verb_) { | |
213 case BINDVERB_POST: | |
214 if (post_data_) { | |
215 // Fill the STGMEDIUM with the data to post. Certain versions of Urlmon | |
216 // require TYMED_GLOBAL with GMEM_FIXED. | |
217 info->stgmedData.tymed = TYMED_HGLOBAL; | |
218 info->stgmedData.hGlobal = get(post_data_); | |
219 | |
220 // The documentation for GetBindInfo() indicates that the method could | |
221 // be called multiple times for the same request. We do not want to | |
222 // allocate global memory for each of those times. So we maintain | |
223 // ownership of the global memory, and pass a reference to it each time. | |
224 // The HGLOBAL is released on BindStatusCallback destruction. Hence we | |
225 // set pUnkForRelease to our IUnknown ptr. | |
226 info->stgmedData.pUnkForRelease = | |
227 static_cast<IBindStatusCallback*>(this); | |
228 AddRef(); | |
229 | |
230 info->cbstgmedData = post_data_byte_count_; | |
231 } | |
232 return S_OK; | |
233 | |
234 case BINDVERB_GET: | |
235 return S_OK; | |
236 | |
237 case BINDVERB_PUT: | |
238 case BINDVERB_CUSTOM: | |
239 default: | |
240 ASSERT1(false); | |
241 return E_FAIL; | |
242 } | |
243 } | |
244 | |
245 STDMETHODIMP BindStatusCallback::OnDataAvailable(DWORD, | |
246 DWORD, | |
247 FORMATETC*, | |
248 STGMEDIUM*) { | |
249 // The documentation does not explicitly say that E_NOTIMPL can be returned | |
250 // for this method. So we return S_OK. | |
251 return S_OK; | |
252 } | |
253 | |
254 STDMETHODIMP BindStatusCallback::OnObjectAvailable(REFIID, IUnknown*) { | |
255 // The documentation does not explicitly say that E_NOTIMPL can be returned | |
256 // for this method. So we return S_OK. | |
257 return S_OK; | |
258 } | |
259 | |
260 STDMETHODIMP BindStatusCallback::BeginningTransaction(LPCWSTR, | |
261 LPCWSTR, | |
262 DWORD, | |
263 LPWSTR* request_headers) { | |
264 if (!request_headers) { | |
265 return E_INVALIDARG; | |
266 } | |
267 *request_headers = NULL; | |
268 | |
269 if (request_headers_.IsEmpty()) { | |
270 return S_OK; | |
271 } | |
272 | |
273 int request_headers_size = request_headers_.GetLength() + 1; | |
274 TCHAR* additional_headers = static_cast<TCHAR*>( | |
275 ::CoTaskMemAlloc(request_headers_size * sizeof(TCHAR))); | |
276 if (!additional_headers) { | |
277 return E_OUTOFMEMORY; | |
278 } | |
279 | |
280 _tcscpy_s(additional_headers, request_headers_size, request_headers_); | |
281 *request_headers = additional_headers; | |
282 | |
283 return S_OK; | |
284 } | |
285 | |
286 STDMETHODIMP BindStatusCallback::OnResponse(DWORD response_code, | |
287 LPCWSTR response_headers, | |
288 LPCWSTR request_headers, | |
289 LPWSTR* additional_headers) { | |
290 CORE_LOG(L1, (_T("[OnResponse [%d][%s]"), response_code, response_headers)); | |
291 UNREFERENCED_PARAMETER(response_code); | |
292 UNREFERENCED_PARAMETER(response_headers); | |
293 UNREFERENCED_PARAMETER(request_headers); | |
294 if (!additional_headers) { | |
295 return E_INVALIDARG; | |
296 } | |
297 | |
298 *additional_headers = NULL; | |
299 return S_OK; | |
300 } | |
301 | |
302 HRESULT BindStatusCallback::Cancel() { | |
303 CComPtr<IBinding> binding; | |
304 | |
305 __mutexBlock(lock_) { | |
306 if (!binding_git_) { | |
307 return S_OK; | |
308 } | |
309 | |
310 HRESULT hr = binding_git_.CopyTo(&binding); | |
311 if (FAILED(hr)) { | |
312 CORE_LOG(LE, (_T("[binding_git_.CopyTo failed][0x%x]"), hr)); | |
313 return hr; | |
314 } | |
315 } | |
316 | |
317 return binding->Abort(); | |
318 } | |
319 | |
320 } // namespace omaha | |
321 | |
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