session: add api to create interrupted downloads

atom/browser/api/atom_api_download_item.cc

@@ -146,6 +146,10 @@ const GURL& DownloadItem::GetURL() const {
   return download_item_->GetURL();
 }
 
+const std::vector<GURL>& DownloadItem::GetURLChain() const {
+  return download_item_->GetUrlChain();
+}
+
 content::DownloadItem::DownloadState DownloadItem::GetState() const {
   return download_item_->GetState();
 }
@@ -162,6 +166,18 @@ base::FilePath DownloadItem::GetSavePath() const {
   return save_path_;
 }
 
+std::string DownloadItem::GetLastModifiedTime() const {
+  return download_item_->GetLastModifiedTime();
+}
+
+std::string DownloadItem::GetETag() const {
+  return download_item_->GetETag();
+}
+
+double DownloadItem::GetStartTime() const {
+  return download_item_->GetStartTime().ToDoubleT();
+}
+
 // static
 void DownloadItem::BuildPrototype(v8::Isolate* isolate,
                                   v8::Local<v8::FunctionTemplate> prototype) {
@@ -180,10 +196,14 @@ void DownloadItem::BuildPrototype(v8::Isolate* isolate,
       .SetMethod("getFilename", &DownloadItem::GetFilename)
       .SetMethod("getContentDisposition", &DownloadItem::GetContentDisposition)
       .SetMethod("getURL", &DownloadItem::GetURL)
+      .SetMethod("getURLChain", &DownloadItem::GetURLChain)
       .SetMethod("getState", &DownloadItem::GetState)
       .SetMethod("isDone", &DownloadItem::IsDone)
       .SetMethod("setSavePath", &DownloadItem::SetSavePath)
-      .SetMethod("getSavePath", &DownloadItem::GetSavePath);
+      .SetMethod("getSavePath", &DownloadItem::GetSavePath)
+      .SetMethod("getLastModifiedTime", &DownloadItem::GetLastModifiedTime)
+      .SetMethod("getETag", &DownloadItem::GetETag)
+      .SetMethod("getStartTime", &DownloadItem::GetStartTime);
 }
 
 // static

atom/browser/api/atom_api_download_item.h

@@ -6,6 +6,7 @@
 #define ATOM_BROWSER_API_ATOM_API_DOWNLOAD_ITEM_H_
 
 #include <string>
+#include <vector>
 
 #include "atom/browser/api/trackable_object.h"
 #include "base/files/file_path.h"
@@ -38,10 +39,14 @@ class DownloadItem : public mate::TrackableObject<DownloadItem>,
   std::string GetFilename() const;
   std::string GetContentDisposition() const;
   const GURL& GetURL() const;
+  const std::vector<GURL>& GetURLChain() const;
   content::DownloadItem::DownloadState GetState() const;
   bool IsDone() const;
   void SetSavePath(const base::FilePath& path);
   base::FilePath GetSavePath() const;
+  std::string GetLastModifiedTime() const;
+  std::string GetETag() const;
+  double GetStartTime() const;
 
  protected:
   DownloadItem(v8::Isolate* isolate, content::DownloadItem* download_item);

atom/browser/api/atom_api_session.cc

@@ -34,6 +34,7 @@
 #include "chrome/common/pref_names.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/download_manager_delegate.h"
 #include "content/public/browser/storage_partition.h"
 #include "native_mate/dictionary.h"
 #include "native_mate/object_template_builder.h"
@@ -331,6 +332,25 @@ void OnClearStorageDataDone(const base::Closure& callback) {
     callback.Run();
 }
 
+void DownloadIdCallback(content::DownloadManager* download_manager,
+                        const base::FilePath& path,
+                        const std::vector<GURL>& url_chain,
+                        const std::string& mime_type,
+                        int64_t offset,
+                        int64_t length,
+                        const std::string& last_modified,
+                        const std::string& etag,
+                        const base::Time& start_time,
+                        uint32_t id) {
+  content::DownloadItem* item = download_manager->CreateDownloadItem(
+      base::GenerateGUID(), id, path, path, url_chain, GURL(), GURL(), GURL(),
+      GURL(), mime_type, mime_type, start_time, base::Time(), etag,
+      last_modified, offset, length, std::string(),
+      content::DownloadItem::INTERRUPTED,
+      content::DownloadDangerType::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
+      content::DOWNLOAD_INTERRUPT_REASON_NETWORK_TIMEOUT, false);
+}
+
 }  // namespace
 
 Session::Session(v8::Isolate* isolate, AtomBrowserContext* browser_context)
@@ -357,10 +377,10 @@ void Session::OnDownloadCreated(content::DownloadManager* manager,
 
   v8::Locker locker(isolate());
   v8::HandleScope handle_scope(isolate());
-  bool prevent_default = Emit(
-      "will-download",
-      DownloadItem::Create(isolate(), item),
-      item->GetWebContents());
+  auto handle = DownloadItem::Create(isolate(), item);
+  if (item->GetState() == content::DownloadItem::INTERRUPTED)
+    handle->SetSavePath(item->GetTargetFilePath());
+  bool prevent_default = Emit("will-download", handle, item->GetWebContents());
   if (prevent_default) {
     item->Cancel(true);
     item->Remove();
@@ -520,6 +540,29 @@ void Session::GetBlobData(
                  callback));
 }
 
+void Session::CreateInterruptedDownload(const mate::Dictionary& options) {
+  int64_t offset = 0, length = 0;
+  double start_time = 0.0;
+  std::string mime_type, last_modified, etag;
+  base::FilePath path;
+  std::vector<GURL> url_chain;
+  options.Get("path", &path);
+  options.Get("urlChain", &url_chain);
+  options.Get("mimeType", &mime_type);
+  options.Get("offset", &offset);
+  options.Get("length", &length);
+  options.Get("lastModified", &last_modified);
+  options.Get("eTag", &etag);
+  options.Get("startTime", &start_time);
+  if (path.empty() || length == 0 || offset >= length)
+    return;
+  auto download_manager =
+      content::BrowserContext::GetDownloadManager(browser_context());
+  download_manager->GetDelegate()->GetNextId(base::Bind(
+      &DownloadIdCallback, download_manager, path, url_chain, mime_type, offset,
+      length, last_modified, etag, base::Time::FromDoubleT(start_time)));
+}
+
 v8::Local<v8::Value> Session::Cookies(v8::Isolate* isolate) {
   if (cookies_.IsEmpty()) {
     auto handle = Cookies::Create(isolate, browser_context());
@@ -603,6 +646,8 @@ void Session::BuildPrototype(v8::Isolate* isolate,
       .SetMethod("setUserAgent", &Session::SetUserAgent)
       .SetMethod("getUserAgent", &Session::GetUserAgent)
       .SetMethod("getBlobData", &Session::GetBlobData)
+      .SetMethod("createInterruptedDownload",
+                 &Session::CreateInterruptedDownload)
       .SetProperty("cookies", &Session::Cookies)
       .SetProperty("protocol", &Session::Protocol)
       .SetProperty("webRequest", &Session::WebRequest);

atom/browser/api/atom_api_session.h

@@ -79,6 +79,7 @@ class Session: public mate::TrackableObject<Session>,
   std::string GetUserAgent();
   void GetBlobData(const std::string& uuid,
                    const AtomBlobReader::CompletionCallback& callback);
+  void CreateInterruptedDownload(const mate::Dictionary& options);
   v8::Local<v8::Value> Cookies(v8::Isolate* isolate);
   v8::Local<v8::Value> Protocol(v8::Isolate* isolate);
   v8::Local<v8::Value> WebRequest(v8::Isolate* isolate);