DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (4a108e94d3e2)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsIEHistoryEnumerator.h"

#include <urlhist.h>
#include <shlguid.h>

#include "nsStringAPI.h"
#include "nsNetUtil.h"
#include "nsIVariant.h"
#include "nsCOMArray.h"
#include "nsArrayEnumerator.h"

namespace {

  PRTime FileTimeToPRTime(FILETIME* filetime)
  {
    SYSTEMTIME st;
    ::FileTimeToSystemTime(filetime, &st);
    PRExplodedTime prt;
    prt.tm_year = st.wYear;
    // SYSTEMTIME's day-of-month parameter is 1-based,
    // PRExplodedTime's is 0-based.
    prt.tm_month = st.wMonth - 1;
    prt.tm_mday = st.wDay;
    prt.tm_hour = st.wHour;
    prt.tm_min = st.wMinute;
    prt.tm_sec = st.wSecond;
    prt.tm_usec = st.wMilliseconds * 1000;
    prt.tm_wday = 0;
    prt.tm_yday = 0;
    prt.tm_params.tp_gmt_offset = 0;
    prt.tm_params.tp_dst_offset = 0;
    return PR_ImplodeTime(&prt);
  }

} // Anonymous namespace.

////////////////////////////////////////////////////////////////////////////////
//// nsIEHistoryEnumerator

NS_IMPL_ISUPPORTS(nsIEHistoryEnumerator, nsISimpleEnumerator)

nsIEHistoryEnumerator::nsIEHistoryEnumerator()
{
  ::CoInitialize(nullptr);  
}

nsIEHistoryEnumerator::~nsIEHistoryEnumerator()
{
  ::CoUninitialize();
}

void
nsIEHistoryEnumerator::EnsureInitialized()
{
  if (mURLEnumerator)
    return;

  HRESULT hr = ::CoCreateInstance(CLSID_CUrlHistory,
                                  nullptr,
                                  CLSCTX_INPROC_SERVER,
                                  IID_IUrlHistoryStg2,
                                  getter_AddRefs(mIEHistory));
  if (FAILED(hr))
    return;

  hr = mIEHistory->EnumUrls(getter_AddRefs(mURLEnumerator));
  if (FAILED(hr))
    return;
}

NS_IMETHODIMP
nsIEHistoryEnumerator::HasMoreElements(bool* _retval)
{
  *_retval = false;

  EnsureInitialized();
  MOZ_ASSERT(mURLEnumerator, "Should have instanced an IE History URLEnumerator");
  if (!mURLEnumerator)
    return NS_OK;

  STATURL statURL;
  ULONG fetched;

  // First argument is not implemented, so doesn't matter what we pass.
  HRESULT hr = mURLEnumerator->Next(1, &statURL, &fetched);
  if (FAILED(hr) || fetched != 1UL) {
    // Reached the last entry.
    return NS_OK;
  }

  nsCOMPtr<nsIURI> uri;
  if (statURL.pwcsUrl) {
    nsDependentString url(statURL.pwcsUrl);
    nsresult rv = NS_NewURI(getter_AddRefs(uri), url);
    ::CoTaskMemFree(statURL.pwcsUrl);
    if (NS_FAILED(rv)) {
      // Got a corrupt or invalid URI, continue to the next entry.
      return HasMoreElements(_retval);
    }
  }

  nsDependentString title(statURL.pwcsTitle);

  PRTime lastVisited = FileTimeToPRTime(&(statURL.ftLastVisited));

  mCachedNextEntry = do_CreateInstance("@mozilla.org/hash-property-bag;1");
  MOZ_ASSERT(mCachedNextEntry, "Should have instanced a new property bag");
  if (mCachedNextEntry) {
    mCachedNextEntry->SetPropertyAsInterface(NS_LITERAL_STRING("uri"), uri);
    mCachedNextEntry->SetPropertyAsAString(NS_LITERAL_STRING("title"), title);
    mCachedNextEntry->SetPropertyAsInt64(NS_LITERAL_STRING("time"), lastVisited);

    *_retval = true;
  }

  if (statURL.pwcsTitle)
    ::CoTaskMemFree(statURL.pwcsTitle);

  return NS_OK;
}

NS_IMETHODIMP
nsIEHistoryEnumerator::GetNext(nsISupports** _retval)
{
  *_retval = nullptr;

  if (!mCachedNextEntry)
    return NS_ERROR_FAILURE;

  NS_ADDREF(*_retval = mCachedNextEntry);
  // Release the cached entry, so it can't be returned twice.
  mCachedNextEntry = nullptr;

  return NS_OK;
}