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| 1 // Copyright 2014 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 "content/browser/media/android/browser_cdm_manager.h" | |
| 6 | |
| 7 #include "base/command_line.h" | |
| 8 #include "base/stl_util.h" | |
| 9 #include "content/common/media/cdm_messages.h" | |
| 10 #include "content/public/browser/browser_context.h" | |
| 11 #include "content/public/browser/render_frame_host.h" | |
| 12 #include "content/public/browser/render_process_host.h" | |
| 13 #include "content/public/browser/render_view_host.h" | |
| 14 #include "content/public/browser/web_contents.h" | |
| 15 #include "content/public/common/content_client.h" | |
| 16 #include "content/public/common/content_switches.h" | |
| 17 #include "media/base/browser_cdm.h" | |
| 18 #include "media/base/browser_cdm_factory.h" | |
| 19 #include "media/base/media_switches.h" | |
| 20 | |
| 21 namespace content { | |
| 22 | |
| 23 using media::BrowserCdm; | |
| 24 using media::MediaKeys; | |
| 25 | |
| 26 // Maximum lengths for various EME API parameters. These are checks to | |
| 27 // prevent unnecessarily large parameters from being passed around, and the | |
| 28 // lengths are somewhat arbitrary as the EME spec doesn't specify any limits. | |
| 29 const size_t kMaxInitDataLength = 64 * 1024; // 64 KB | |
| 30 const size_t kMaxSessionResponseLength = 64 * 1024; // 64 KB | |
| 31 const size_t kMaxKeySystemLength = 256; | |
| 32 | |
| 33 // static | |
| 34 BrowserCdmManager* BrowserCdmManager::Create(RenderFrameHost* rfh) { | |
| 35 return new BrowserCdmManager(rfh); | |
| 36 } | |
| 37 | |
| 38 BrowserCdmManager::BrowserCdmManager(RenderFrameHost* render_frame_host) | |
| 39 : render_frame_host_(render_frame_host), | |
| 40 web_contents_(WebContents::FromRenderFrameHost(render_frame_host)), | |
| 41 weak_ptr_factory_(this) { | |
| 42 } | |
| 43 | |
| 44 BrowserCdmManager::~BrowserCdmManager() { | |
| 45 STLDeleteValues(&cdm_map_); | |
| 46 } | |
| 47 | |
| 48 BrowserCdm* BrowserCdmManager::GetCdm(int cdm_id) { | |
| 49 CdmMap::const_iterator iter = cdm_map_.find(cdm_id); | |
| 50 return (iter == cdm_map_.end()) ? NULL : iter->second; | |
| 51 } | |
| 52 | |
| 53 void BrowserCdmManager::OnSessionCreated( | |
| 54 int cdm_id, | |
| 55 uint32 session_id, | |
| 56 const std::string& web_session_id) { | |
| 57 Send(new CdmMsg_SessionCreated( | |
| 58 RoutingID(), cdm_id, session_id, web_session_id)); | |
| 59 } | |
| 60 | |
| 61 void BrowserCdmManager::OnSessionMessage( | |
| 62 int cdm_id, | |
| 63 uint32 session_id, | |
| 64 const std::vector<uint8>& message, | |
| 65 const GURL& destination_url) { | |
| 66 GURL verified_gurl = destination_url; | |
| 67 if (!verified_gurl.is_valid() && !verified_gurl.is_empty()) { | |
| 68 DLOG(WARNING) << "SessionMessage destination_url is invalid : " | |
| 69 << destination_url.possibly_invalid_spec(); | |
| 70 verified_gurl = GURL::EmptyGURL(); // Replace invalid destination_url. | |
| 71 } | |
| 72 | |
| 73 Send(new CdmMsg_SessionMessage( | |
| 74 RoutingID(), cdm_id, session_id, message, verified_gurl)); | |
| 75 } | |
| 76 | |
| 77 void BrowserCdmManager::OnSessionReady(int cdm_id, uint32 session_id) { | |
| 78 Send(new CdmMsg_SessionReady(RoutingID(), cdm_id, session_id)); | |
| 79 } | |
| 80 | |
| 81 void BrowserCdmManager::OnSessionClosed(int cdm_id, uint32 session_id) { | |
| 82 Send(new CdmMsg_SessionClosed(RoutingID(), cdm_id, session_id)); | |
| 83 } | |
| 84 | |
| 85 void BrowserCdmManager::OnSessionError(int cdm_id, | |
| 86 uint32 session_id, | |
| 87 MediaKeys::KeyError error_code, | |
| 88 uint32 system_code) { | |
| 89 Send(new CdmMsg_SessionError( | |
| 90 RoutingID(), cdm_id, session_id, error_code, system_code)); | |
| 91 } | |
| 92 | |
| 93 void BrowserCdmManager::OnInitializeCdm(int cdm_id, | |
| 94 const std::string& key_system, | |
| 95 const GURL& security_origin) { | |
| 96 if (key_system.size() > kMaxKeySystemLength) { | |
| 97 // This failure will be discovered and reported by OnCreateSession() | |
| 98 // as GetCdm() will return null. | |
| 99 NOTREACHED() << "Invalid key system: " << key_system; | |
| 100 return; | |
| 101 } | |
| 102 | |
| 103 AddCdm(cdm_id, key_system, security_origin); | |
| 104 } | |
| 105 | |
| 106 void BrowserCdmManager::OnCreateSession( | |
| 107 int cdm_id, | |
| 108 uint32 session_id, | |
| 109 CdmHostMsg_CreateSession_ContentType content_type, | |
| 110 const std::vector<uint8>& init_data) { | |
| 111 if (init_data.size() > kMaxInitDataLength) { | |
| 112 LOG(WARNING) << "InitData for ID: " << cdm_id | |
| 113 << " too long: " << init_data.size(); | |
| 114 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 115 return; | |
| 116 } | |
| 117 | |
| 118 // Convert the session content type into a MIME type. "audio" and "video" | |
| 119 // don't matter, so using "video" for the MIME type. | |
| 120 // Ref: | |
| 121 // https://dvcs.w3.org/hg/html-media/raw-file/default/encrypted-media/encrypte
d-media.html#dom-createsession | |
| 122 std::string mime_type; | |
| 123 switch (content_type) { | |
| 124 case CREATE_SESSION_TYPE_WEBM: | |
| 125 mime_type = "video/webm"; | |
| 126 break; | |
| 127 case CREATE_SESSION_TYPE_MP4: | |
| 128 mime_type = "video/mp4"; | |
| 129 break; | |
| 130 default: | |
| 131 NOTREACHED(); | |
| 132 return; | |
| 133 } | |
| 134 | |
| 135 #if defined(OS_ANDROID) | |
| 136 if (CommandLine::ForCurrentProcess() | |
| 137 ->HasSwitch(switches::kDisableInfobarForProtectedMediaIdentifier)) { | |
| 138 CreateSessionIfPermitted(cdm_id, session_id, mime_type, init_data, true); | |
| 139 return; | |
| 140 } | |
| 141 #endif | |
| 142 | |
| 143 BrowserCdm* cdm = GetCdm(cdm_id); | |
| 144 if (!cdm) { | |
| 145 DLOG(WARNING) << "No CDM for ID " << cdm_id << " found"; | |
| 146 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 147 return; | |
| 148 } | |
| 149 | |
| 150 BrowserContext* context = | |
| 151 web_contents_->GetRenderProcessHost()->GetBrowserContext(); | |
| 152 | |
| 153 std::map<int, GURL>::const_iterator iter = | |
| 154 cdm_security_origin_map_.find(cdm_id); | |
| 155 if (iter == cdm_security_origin_map_.end()) { | |
| 156 NOTREACHED(); | |
| 157 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 158 return; | |
| 159 } | |
| 160 | |
| 161 context->RequestProtectedMediaIdentifierPermission( | |
| 162 web_contents_->GetRenderProcessHost()->GetID(), | |
| 163 web_contents_->GetRenderViewHost()->GetRoutingID(), | |
| 164 iter->second, | |
| 165 base::Bind(&BrowserCdmManager::CreateSessionIfPermitted, | |
| 166 weak_ptr_factory_.GetWeakPtr(), | |
| 167 cdm_id, | |
| 168 session_id, | |
| 169 mime_type, | |
| 170 init_data)); | |
| 171 } | |
| 172 | |
| 173 void BrowserCdmManager::OnUpdateSession( | |
| 174 int cdm_id, | |
| 175 uint32 session_id, | |
| 176 const std::vector<uint8>& response) { | |
| 177 BrowserCdm* cdm = GetCdm(cdm_id); | |
| 178 if (!cdm) { | |
| 179 DLOG(WARNING) << "No CDM for ID " << cdm_id << " found"; | |
| 180 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 181 return; | |
| 182 } | |
| 183 | |
| 184 if (response.size() > kMaxSessionResponseLength) { | |
| 185 LOG(WARNING) << "Response for ID " << cdm_id | |
| 186 << " is too long: " << response.size(); | |
| 187 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 188 return; | |
| 189 } | |
| 190 | |
| 191 cdm->UpdateSession(session_id, &response[0], response.size()); | |
| 192 } | |
| 193 | |
| 194 void BrowserCdmManager::OnReleaseSession(int cdm_id, uint32 session_id) { | |
| 195 BrowserCdm* cdm = GetCdm(cdm_id); | |
| 196 if (!cdm) { | |
| 197 DLOG(WARNING) << "No CDM for ID " << cdm_id << " found"; | |
| 198 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 199 return; | |
| 200 } | |
| 201 | |
| 202 cdm->ReleaseSession(session_id); | |
| 203 } | |
| 204 | |
| 205 void BrowserCdmManager::OnDestroyCdm(int cdm_id) { | |
| 206 BrowserCdm* cdm = GetCdm(cdm_id); | |
| 207 if (!cdm) | |
| 208 return; | |
| 209 | |
| 210 CancelAllPendingSessionCreations(cdm_id); | |
| 211 RemoveCdm(cdm_id); | |
| 212 } | |
| 213 | |
| 214 void BrowserCdmManager::CancelAllPendingSessionCreations(int cdm_id) { | |
| 215 BrowserContext* context = | |
| 216 web_contents_->GetRenderProcessHost()->GetBrowserContext(); | |
| 217 std::map<int, GURL>::const_iterator iter = | |
| 218 cdm_security_origin_map_.find(cdm_id); | |
| 219 if (iter == cdm_security_origin_map_.end()) | |
| 220 return; | |
| 221 context->CancelProtectedMediaIdentifierPermissionRequests( | |
| 222 web_contents_->GetRenderProcessHost()->GetID(), | |
| 223 web_contents_->GetRenderViewHost()->GetRoutingID(), | |
| 224 iter->second); | |
| 225 } | |
| 226 | |
| 227 void BrowserCdmManager::AddCdm(int cdm_id, | |
| 228 const std::string& key_system, | |
| 229 const GURL& security_origin) { | |
| 230 DCHECK(!GetCdm(cdm_id)); | |
| 231 base::WeakPtr<BrowserCdmManager> weak_this = weak_ptr_factory_.GetWeakPtr(); | |
| 232 scoped_ptr<BrowserCdm> cdm(media::CreateBrowserCdm( | |
| 233 key_system, | |
| 234 base::Bind(&BrowserCdmManager::OnSessionCreated, weak_this, cdm_id), | |
| 235 base::Bind(&BrowserCdmManager::OnSessionMessage, weak_this, cdm_id), | |
| 236 base::Bind(&BrowserCdmManager::OnSessionReady, weak_this, cdm_id), | |
| 237 base::Bind(&BrowserCdmManager::OnSessionClosed, weak_this, cdm_id), | |
| 238 base::Bind(&BrowserCdmManager::OnSessionError, weak_this, cdm_id))); | |
| 239 | |
| 240 if (!cdm) { | |
| 241 // This failure will be discovered and reported by OnCreateSession() | |
| 242 // as GetCdm() will return null. | |
| 243 DVLOG(1) << "failed to create CDM."; | |
| 244 return; | |
| 245 } | |
| 246 | |
| 247 cdm_map_[cdm_id] = cdm.release(); | |
| 248 cdm_security_origin_map_[cdm_id] = security_origin; | |
| 249 } | |
| 250 | |
| 251 void BrowserCdmManager::RemoveCdm(int cdm_id) { | |
| 252 // TODO(xhwang): Detach CDM from the player it's set to. In prefixed | |
| 253 // EME implementation the current code is fine because we always destroy the | |
| 254 // player before we destroy the DrmBridge. This will not always be the case | |
| 255 // in unprefixed EME implementation. | |
| 256 CdmMap::iterator iter = cdm_map_.find(cdm_id); | |
| 257 if (iter != cdm_map_.end()) { | |
| 258 delete iter->second; | |
| 259 cdm_map_.erase(iter); | |
| 260 } | |
| 261 cdm_security_origin_map_.erase(cdm_id); | |
| 262 } | |
| 263 | |
| 264 int BrowserCdmManager::RoutingID() { | |
| 265 return render_frame_host_->GetRoutingID(); | |
| 266 } | |
| 267 | |
| 268 bool BrowserCdmManager::Send(IPC::Message* msg) { | |
| 269 return render_frame_host_->Send(msg); | |
| 270 } | |
| 271 | |
| 272 void BrowserCdmManager::CreateSessionIfPermitted( | |
| 273 int cdm_id, | |
| 274 uint32 session_id, | |
| 275 const std::string& content_type, | |
| 276 const std::vector<uint8>& init_data, | |
| 277 bool permitted) { | |
| 278 if (!permitted) { | |
| 279 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 280 return; | |
| 281 } | |
| 282 | |
| 283 BrowserCdm* cdm = GetCdm(cdm_id); | |
| 284 if (!cdm) { | |
| 285 DLOG(WARNING) << "No CDM for ID: " << cdm_id << " found"; | |
| 286 OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0); | |
| 287 return; | |
| 288 } | |
| 289 | |
| 290 // This could fail, in which case a SessionError will be fired. | |
| 291 cdm->CreateSession(session_id, content_type, &init_data[0], init_data.size()); | |
| 292 } | |
| 293 | |
| 294 } // namespace content | |
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Chromium Code Reviews
Issue 318753010:
Introduce the ENABLE_BROWSER_CDMS macro. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src