129 lines
3.2 KiB
C++
129 lines
3.2 KiB
C++
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/****************************************************\
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FILE: offline.cpp
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DESCRIPTION:
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Handle 'offline' status and Dial-up UI
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\****************************************************/
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#include "priv.h"
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#include "util.h"
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#ifdef FEATURE_OFFLINE
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/****************************************************\
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FUNCTION: IsGlobalOffline
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DESCRIPTION:
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Determines whether wininet is in global offline mode
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PARAMETERS:
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None
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RETURN VALUE:
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BOOL
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TRUE - offline
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FALSE - online
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\****************************************************/
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BOOL IsGlobalOffline(VOID)
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{
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DWORD dwState = 0, dwSize = sizeof(DWORD);
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BOOL fRet = FALSE;
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if(InternetQueryOption(NULL, INTERNET_OPTION_CONNECTED_STATE, &dwState, &dwSize))
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{
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if(dwState & INTERNET_STATE_DISCONNECTED_BY_USER)
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fRet = TRUE;
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}
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return fRet;
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}
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/****************************************************\
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FUNCTION: SetOffline
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DESCRIPTION:
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Sets wininet's offline mode
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PARAMETERS:
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fOffline - online or offline
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RETURN VALUE:
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None.
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\****************************************************/
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VOID SetOffline(IN BOOL fOffline)
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{
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INTERNET_CONNECTED_INFO ci = {0};
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if(fOffline)
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{
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ci.dwConnectedState = INTERNET_STATE_DISCONNECTED_BY_USER;
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ci.dwFlags = ISO_FORCE_DISCONNECTED;
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}
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else
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{
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ci.dwConnectedState = INTERNET_STATE_CONNECTED;
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}
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InternetSetOption(NULL, INTERNET_OPTION_CONNECTED_STATE, &ci, sizeof(ci));
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}
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#endif // FEATURE_OFFLINE
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/****************************************************\
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FUNCTION: AssureNetConnection
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DESCRIPTION:
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\****************************************************/
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HRESULT AssureNetConnection(HINTERNET hint, HWND hwndParent, LPCWSTR pwzServerName, LPCITEMIDLIST pidl, BOOL fShowUI)
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{
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HRESULT hr = S_OK;
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#ifdef FEATURE_OFFLINE
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if (IsGlobalOffline())
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{
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// Assume we need to cancel the FTP operation because we are offline.
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hr = HRESULT_FROM_WIN32(ERROR_CANCELLED);
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// Can we prompt to go online?
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if (fShowUI)
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{
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TCHAR szTitle[MAX_PATH];
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TCHAR szPromptMsg[MAX_PATH];
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EVAL(LoadString(HINST_THISDLL, IDS_FTPERR_TITLE, szTitle, ARRAYSIZE(szTitle)));
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EVAL(LoadString(HINST_THISDLL, IDS_OFFLINE_PROMPTTOGOONLINE, szPromptMsg, ARRAYSIZE(szPromptMsg)));
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if (IDYES == MessageBox(hwndParent, szPromptMsg, szTitle, (MB_ICONQUESTION | MB_YESNO)))
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{
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SetOffline(FALSE);
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hr = S_OK;
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}
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}
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}
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#endif // FEATURE_OFFLINE
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#ifdef FEATURE_DIALER
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if (S_OK == hr)
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{
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TCHAR szUrl[MAX_URL_STRING];
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StrCpyN(szUrl, TEXT("ftp://"), ARRAYSIZE(szUrl));
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StrCatBuff(szUrl, pwzServerName, ARRAYSIZE(szUrl));
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// PERF: Does this value get cached?
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if (FALSE == InternetCheckConnection(szUrl, FLAG_ICC_FORCE_CONNECTION, 0)
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#ifdef FEATURE_TEST_DIALER
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(IDNO == MessageBox(hwndParent, TEXT("TEST: Do you want to dial?"), TEXT("Test Dialer"), MB_YESNO))
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#endif // FEATURE_TEST_DIALER
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)
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{
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hr = HRESULT_FROM_WIN32(ERROR_CANCELLED);
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}
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}
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#endif // FEATURE_DIALER
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return hr;
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}
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