static void trace_extended_error(DWORD error)
{
DWORD code, buflen = 0;
if (error != ERROR_INTERNET_EXTENDED_ERROR) return;
if (!InternetGetLastResponseInfoA(&code, NULL, &buflen) && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
char *text = HeapAlloc(GetProcessHeap(), 0, ++buflen);
InternetGetLastResponseInfoA(&code, text, &buflen);
trace("%u %s\n", code, text);
HeapFree(GetProcessHeap(), 0, text);
}
}
// Reports error
void FtpClient::showError()
{
// Get error
DWORD errCode = GetLastError();
// Internet error
if (errCode == ERROR_INTERNET_EXTENDED_ERROR)
{
// Write error to buffer
DWORD errLength = 1024;
char errBuffer[1024];
InternetGetLastResponseInfoA(&errCode, errBuffer, &errLength);
// Get error as string
OutputDebugStringA((LPCSTR)(LPCTSTR)errBuffer);
OutputDebugStringA("\n");
// Clear buffer
LocalFree(errBuffer);
}
else
{
// Format message
LPVOID errBuffer;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &errBuffer, 0, NULL);
LPVOID dispBuffer = (LPVOID)LocalAlloc(LMEM_ZEROINIT, (lstrlen((LPCTSTR)errBuffer) + 40) * sizeof(TCHAR));
swprintf((LPTSTR)dispBuffer, LocalSize(dispBuffer) / sizeof(TCHAR), TEXT("Error %d: %s"), errCode, errBuffer);
// Output error
OutputDebugStringA((LPCSTR)(LPCTSTR)dispBuffer);
OutputDebugStringA("\n");
// Clear buffers
LocalFree(errBuffer);
LocalFree(dispBuffer);
}
}
/*
* FormatMessage does not handle internet errors
* http://support.microsoft.com/kb/193625
*/
const char* WinInetErrorString(void)
{
static char error_string[256];
DWORD size = sizeof(error_string);
error_code = HRESULT_CODE(GetLastError());
if ((error_code < INTERNET_ERROR_BASE) || (error_code > INTERNET_ERROR_LAST))
return WindowsErrorString();
// TODO: These should be localized on an ad-hoc basis
switch(error_code) {
case ERROR_INTERNET_OUT_OF_HANDLES:
return "No more handles could be generated at this time.";
case ERROR_INTERNET_TIMEOUT:
return "The request has timed out.";
case ERROR_INTERNET_INTERNAL_ERROR:
return "An internal error has occurred.";
case ERROR_INTERNET_INVALID_URL:
return "The URL is invalid.";
case ERROR_INTERNET_UNRECOGNIZED_SCHEME:
return "The URL scheme could not be recognized or is not supported.";
case ERROR_INTERNET_NAME_NOT_RESOLVED:
return "The server name could not be resolved.";
case ERROR_INTERNET_PROTOCOL_NOT_FOUND:
return "The requested protocol could not be located.";
case ERROR_INTERNET_INVALID_OPTION:
return "A request specified an invalid option value.";
case ERROR_INTERNET_BAD_OPTION_LENGTH:
return "The length of an option supplied is incorrect for the type of option specified.";
case ERROR_INTERNET_OPTION_NOT_SETTABLE:
return "The request option cannot be set, only queried.";
case ERROR_INTERNET_SHUTDOWN:
return "The Win32 Internet function support is being shut down or unloaded.";
case ERROR_INTERNET_INCORRECT_USER_NAME:
return "The request to connect and log on to an FTP server could not be completed because the supplied user name is incorrect.";
case ERROR_INTERNET_INCORRECT_PASSWORD:
return "The request to connect and log on to an FTP server could not be completed because the supplied password is incorrect.";
case ERROR_INTERNET_LOGIN_FAILURE:
return "The request to connect to and log on to an FTP server failed.";
case ERROR_INTERNET_INVALID_OPERATION:
return "The requested operation is invalid.";
case ERROR_INTERNET_OPERATION_CANCELLED:
return "The operation was canceled, usually because the handle on which the request was operating was closed before the operation completed.";
case ERROR_INTERNET_INCORRECT_HANDLE_TYPE:
return "The type of handle supplied is incorrect for this operation.";
case ERROR_INTERNET_INCORRECT_HANDLE_STATE:
return "The requested operation cannot be carried out because the handle supplied is not in the correct state.";
case ERROR_INTERNET_NOT_PROXY_REQUEST:
return "The request cannot be made via a proxy.";
case ERROR_INTERNET_REGISTRY_VALUE_NOT_FOUND:
return "A required registry value could not be located.";
case ERROR_INTERNET_BAD_REGISTRY_PARAMETER:
return "A required registry value was located but is an incorrect type or has an invalid value.";
case ERROR_INTERNET_NO_DIRECT_ACCESS:
return "Direct network access cannot be made at this time.";
case ERROR_INTERNET_NO_CONTEXT:
return "An asynchronous request could not be made because a zero context value was supplied.";
case ERROR_INTERNET_NO_CALLBACK:
return "An asynchronous request could not be made because a callback function has not been set.";
case ERROR_INTERNET_REQUEST_PENDING:
return "The required operation could not be completed because one or more requests are pending.";
case ERROR_INTERNET_INCORRECT_FORMAT:
return "The format of the request is invalid.";
case ERROR_INTERNET_ITEM_NOT_FOUND:
return "The requested item could not be located.";
case ERROR_INTERNET_CANNOT_CONNECT:
return "The attempt to connect to the server failed.";
case ERROR_INTERNET_CONNECTION_ABORTED:
return "The connection with the server has been terminated.";
case ERROR_INTERNET_CONNECTION_RESET:
return "The connection with the server has been reset.";
case ERROR_INTERNET_FORCE_RETRY:
return "Calls for the Win32 Internet function to redo the request.";
case ERROR_INTERNET_INVALID_PROXY_REQUEST:
return "The request to the proxy was invalid.";
case ERROR_INTERNET_HANDLE_EXISTS:
return "The request failed because the handle already exists.";
case ERROR_INTERNET_SEC_CERT_DATE_INVALID:
return "SSL certificate date that was received from the server is bad. The certificate is expired.";
case ERROR_INTERNET_SEC_CERT_CN_INVALID:
return "SSL certificate common name (host name field) is incorrect.";
case ERROR_INTERNET_HTTP_TO_HTTPS_ON_REDIR:
return "The application is moving from a non-SSL to an SSL connection because of a redirect.";
case ERROR_INTERNET_HTTPS_TO_HTTP_ON_REDIR:
return "The application is moving from an SSL to an non-SSL connection because of a redirect.";
case ERROR_INTERNET_MIXED_SECURITY:
return "Some of the content being viewed may have come from unsecured servers.";
case ERROR_INTERNET_CHG_POST_IS_NON_SECURE:
return "The application is posting and attempting to change multiple lines of text on a server that is not secure.";
case ERROR_INTERNET_POST_IS_NON_SECURE:
return "The application is posting data to a server that is not secure.";
case ERROR_FTP_TRANSFER_IN_PROGRESS:
return "The requested operation cannot be made on the FTP session handle because an operation is already in progress.";
case ERROR_FTP_DROPPED:
return "The FTP operation was not completed because the session was aborted.";
case ERROR_GOPHER_PROTOCOL_ERROR:
case ERROR_GOPHER_NOT_FILE:
case ERROR_GOPHER_DATA_ERROR:
case ERROR_GOPHER_END_OF_DATA:
case ERROR_GOPHER_INVALID_LOCATOR:
case ERROR_GOPHER_INCORRECT_LOCATOR_TYPE:
case ERROR_GOPHER_NOT_GOPHER_PLUS:
case ERROR_GOPHER_ATTRIBUTE_NOT_FOUND:
case ERROR_GOPHER_UNKNOWN_LOCATOR:
return "Gopher? Really??? What is this, 1994?";
case ERROR_HTTP_HEADER_NOT_FOUND:
return "The requested header could not be located.";
case ERROR_HTTP_DOWNLEVEL_SERVER:
return "The server did not return any headers.";
case ERROR_HTTP_INVALID_SERVER_RESPONSE:
return "The server response could not be parsed.";
case ERROR_HTTP_INVALID_HEADER:
return "The supplied header is invalid.";
case ERROR_HTTP_INVALID_QUERY_REQUEST:
return "The request made to HttpQueryInfo is invalid.";
case ERROR_HTTP_HEADER_ALREADY_EXISTS:
return "The header could not be added because it already exists.";
case ERROR_HTTP_REDIRECT_FAILED:
return "The redirection failed because either the scheme changed or all attempts made to redirect failed.";
case ERROR_INTERNET_CLIENT_AUTH_CERT_NEEDED:
return "Client Authentication certificate needed";
case ERROR_INTERNET_BAD_AUTO_PROXY_SCRIPT:
return "Bad auto proxy script.";
case ERROR_INTERNET_UNABLE_TO_DOWNLOAD_SCRIPT:
return "Unable to download script.";
case ERROR_INTERNET_NOT_INITIALIZED:
return "Internet has not be initialized.";
case ERROR_INTERNET_UNABLE_TO_CACHE_FILE:
return "Unable to cache the file.";
case ERROR_INTERNET_TCPIP_NOT_INSTALLED:
return "TPC/IP not installed.";
case ERROR_INTERNET_DISCONNECTED:
return "Internet is disconnected.";
case ERROR_INTERNET_SERVER_UNREACHABLE:
return "Server could not be reached.";
case ERROR_INTERNET_PROXY_SERVER_UNREACHABLE:
return "Proxy server could not be reached.";
case ERROR_INTERNET_FAILED_DUETOSECURITYCHECK:
return "A security check prevented internet connection.";
case ERROR_INTERNET_NEED_MSN_SSPI_PKG:
return "This connection requires an MSN Security Support Provider Interface package.";
case ERROR_INTERNET_LOGIN_FAILURE_DISPLAY_ENTITY_BODY:
return "Please ask Microsoft about that one!";
case ERROR_INTERNET_EXTENDED_ERROR:
InternetGetLastResponseInfoA(&error_code, error_string, &size);
return error_string;
default:
safe_sprintf(error_string, sizeof(error_string), "Unknown internet error 0x%08X", error_code);
return error_string;
}
}