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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587
/* 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/. */

// This source is mostly a bunch of Windows API calls. It is only compiled for
// Windows builds.
//
// Registry entries for Autodial mappings are located here:
//  HKEY_CURRENT_USER\Software\Microsoft\RAS Autodial\Addresses

#include <windows.h>
#include <winsvc.h>
#include "nsString.h"
#include "nsAutodialWin.h"
#include "prlog.h"
#include "nsWindowsHelpers.h"

#define AUTODIAL_DEFAULT AUTODIAL_NEVER

//
// Log module for autodial logging...
//
// To enable logging (see prlog.h for full details):
//
//    set NSPR_LOG_MODULES=Autodial:5
//    set NSPR_LOG_FILE=nspr.log
//
// this enables PR_LOG_DEBUG level information and places all output in
// the file nspr.log
//

#ifdef PR_LOGGING
static PRLogModuleInfo* gLog = nullptr;
#endif

#undef LOGD
#undef LOGE
#define LOGD(args) PR_LOG(gLog, PR_LOG_DEBUG, args)
#define LOGE(args) PR_LOG(gLog, PR_LOG_ERROR, args)

// Don't try to dial again within a few seconds of when user pressed cancel.
#define NO_RETRY_PERIOD_SEC 5
PRIntervalTime nsAutodial::mDontRetryUntil = 0;

// ctor. 
nsAutodial::nsAutodial()
:   mAutodialBehavior(AUTODIAL_DEFAULT),
    mAutodialServiceDialingLocation(-1),
    mNumRASConnectionEntries(0)
{
    // Initializations that can be made again since RAS OS settings can 
    // change.
    Init();
}

// dtor
nsAutodial::~nsAutodial()
{
}


// Get settings from the OS. These are settings that might change during
// the OS session. Call Init() again to pick up those changes if required.
// Returns NS_ERROR_FAILURE if error or NS_OK if success.
nsresult nsAutodial::Init()
{
#ifdef PR_LOGGING
    if (!gLog)
        gLog = PR_NewLogModule("Autodial");
#endif

    mDefaultEntryName[0] = '\0';
    mNumRASConnectionEntries = 0;
    mAutodialBehavior = QueryAutodialBehavior();
    
    // No need to continue in this case.
    if (mAutodialBehavior == AUTODIAL_NEVER)
    {
        return NS_OK;
    }


    // Get the number of dialup entries in the phonebook.
    mNumRASConnectionEntries = NumRASEntries();
    
    // Get the name of the default entry.
    nsresult result = GetDefaultEntryName(mDefaultEntryName,
                                          sizeof(mDefaultEntryName));
    
    return result;
}


// Should we attempt to dial on a network error? Yes if the Internet Options
// configured as such. Yes if the RAS autodial service is running (we'll try to
// force it to dial in that case by adding the network address to its db.)
bool nsAutodial::ShouldDialOnNetworkError()
{
    // Don't try to dial again within a few seconds of when user pressed cancel.
    if (mDontRetryUntil) 
    {
        PRIntervalTime intervalNow = PR_IntervalNow();
        if (intervalNow < mDontRetryUntil) 
        {
            LOGD(("Autodial: Not dialing: too soon."));
            return false;
        }
    }
     

    return ((mAutodialBehavior == AUTODIAL_ALWAYS) 
             || (mAutodialBehavior == AUTODIAL_ON_NETWORKERROR)
             || (mAutodialBehavior == AUTODIAL_USE_SERVICE));
}


// The autodial info is set in Control Panel | Internet Options | Connections.
// The values are stored in the registry. This function gets those values from
// the registry and determines if we should never dial, always dial, or dial
// when there is no network found.
int nsAutodial::QueryAutodialBehavior()
{
    if (IsAutodialServiceRunning())
    {
        // Is Autodial service enabled for the current login session?
        DWORD disabled = 0;
        DWORD size = sizeof(DWORD);
        if (RasGetAutodialParamW(RASADP_LoginSessionDisable, &disabled, &size) == ERROR_SUCCESS)
        {
            if (!disabled)
            {
                // If current dialing location has autodial on, we'll let the service dial.
                mAutodialServiceDialingLocation = GetCurrentLocation();
                if (IsAutodialServiceEnabled(mAutodialServiceDialingLocation))
                {
                    return AUTODIAL_USE_SERVICE;
                }
            }
        }
    }

    // If we get to here, then the service is not going to dial on error, so we
    // can dial ourselves if the control panel settings are set up that way.
    HKEY hKey = 0;
    LONG result = ::RegOpenKeyExW(
                    HKEY_CURRENT_USER, 
                    L"Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings", 
                    0, 
                    KEY_READ, 
                    &hKey);

    if (result != ERROR_SUCCESS)
    {
        LOGE(("Autodial: Error opening reg key Internet Settings"));
        return AUTODIAL_NEVER;
    }

    DWORD entryType = 0;
    DWORD autodial = 0;
    DWORD onDemand = 0;
    DWORD paramSize = sizeof(DWORD);

    result = ::RegQueryValueExW(hKey, L"EnableAutodial", nullptr, &entryType, (LPBYTE)&autodial, &paramSize);
    if (result != ERROR_SUCCESS)
    {
        ::RegCloseKey(hKey);
        LOGE(("Autodial: Error reading reg value EnableAutodial."));
        return AUTODIAL_NEVER;
    }

    result = ::RegQueryValueExW(hKey, L"NoNetAutodial", nullptr, &entryType, (LPBYTE)&onDemand, &paramSize);
    if (result != ERROR_SUCCESS)
    {
        ::RegCloseKey(hKey);
        LOGE(("Autodial: Error reading reg value NoNetAutodial."));
        return AUTODIAL_NEVER;
    }
  
    ::RegCloseKey(hKey);

    if (!autodial)
    {
        return AUTODIAL_NEVER;
    }
    else 
    {
        if (onDemand)
        {
            return AUTODIAL_ON_NETWORKERROR;
        }
        else
        {
            return AUTODIAL_ALWAYS;
        }
    }
}

// If the RAS autodial service is running, use it. Otherwise, dial
// the default RAS connection. There are two possible RAS dialogs:
// one that dials a single entry, and one that lets the user choose which
// to dial. If there is only one connection entry in the phone book, or
// there are multiple entries but one is defined as the default, we'll use
// the single entry dial dialog. If there are multiple connection entries,
// and none is specified as default, we'll bring up the diallog which lets
// the user select the connection entry to use.
//
// Return values:
//  NS_OK: dialing was successful and caller should retry
//  all other values indicate that the caller should not retry
nsresult nsAutodial::DialDefault(const char16_t* hostName)
{
    mDontRetryUntil = 0;

    if (mAutodialBehavior == AUTODIAL_NEVER)
    {
        return NS_ERROR_FAILURE;    // don't retry the network error
    }

    // If already a RAS connection, bail.
    if (IsRASConnected())
    {
        LOGD(("Autodial: Not dialing: active connection."));
        return NS_ERROR_FAILURE;    // don't retry
    }

    // If no dialup connections configured, bail.
    if (mNumRASConnectionEntries <= 0)
    {
        LOGD(("Autodial: Not dialing: no entries."));
        return NS_ERROR_FAILURE;    // don't retry
    }


    // If autodial service is running, let it dial. In order for it to dial more
    // reliably, we have to add the target address to the autodial database.
    // This is the only way the autodial service dial if there is a network
    // adapter installed. But even then it might not dial. We have to assume that
    // it will though, or we could end up with two attempts to dial on the same
    // network error if the user cancels the first one: one from the service and
    // one from us.
    // See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/rras/ras4over_3dwl.asp
    if (mAutodialBehavior == AUTODIAL_USE_SERVICE)
    {
        AddAddressToAutodialDirectory(hostName);
        return NS_ERROR_FAILURE;    // don't retry
    }

    // Do the dialing ourselves.
    else
    {
        // If a default dial entry is configured, use it.
        if (mDefaultEntryName[0] != '\0') 
        {
            LOGD(("Autodial: Dialing default: %s.",mDefaultEntryName));

            RASDIALDLG rasDialDlg;
            memset(&rasDialDlg, 0, sizeof(rasDialDlg));
            rasDialDlg.dwSize = sizeof(rasDialDlg);

            BOOL dialed = 
             RasDialDlgW(nullptr, mDefaultEntryName, nullptr, &rasDialDlg);

            if (!dialed)
            {
                if (rasDialDlg.dwError != 0)
                {
                    LOGE(("Autodial ::RasDialDlg failed: Error: %d.", 
                     rasDialDlg.dwError));
                }
                else
                {
                    mDontRetryUntil = PR_IntervalNow() + PR_SecondsToInterval(NO_RETRY_PERIOD_SEC);
                    LOGD(("Autodial: User cancelled dial."));
                }
                return NS_ERROR_FAILURE;    // don't retry
            }

            LOGD(("Autodial: RAS dialup connection successful."));
        }

        // If no default connection specified, open the dialup dialog that lets
        // the user specifiy which connection to dial.
        else
        {
            LOGD(("Autodial: Prompting for phonebook entry."));

            RASPBDLG rasPBDlg;
            memset(&rasPBDlg, 0, sizeof(rasPBDlg));
            rasPBDlg.dwSize = sizeof(rasPBDlg);
 
            BOOL dialed = RasPhonebookDlgW(nullptr, nullptr, &rasPBDlg);

            if (!dialed)
            {
                if (rasPBDlg.dwError != 0)
                {
                    LOGE(("Autodial: ::RasPhonebookDlg failed: Error = %d.", 
                     rasPBDlg.dwError));
                }
                else
                {
                    mDontRetryUntil = PR_IntervalNow() + PR_SecondsToInterval(NO_RETRY_PERIOD_SEC);
                    LOGD(("Autodial: User cancelled dial."));
                }

                return NS_ERROR_FAILURE;    // don't retry
            }

            LOGD(("Autodial: RAS dialup connection successful."));
        }
    }

    // Retry because we just established a dialup connection.
    return NS_OK;
}


// Check to see if RAS is already connected.
bool nsAutodial::IsRASConnected()
{
    DWORD connections;
    RASCONN rasConn;
    rasConn.dwSize = sizeof(rasConn);
    DWORD structSize = sizeof(rasConn);

    DWORD result = RasEnumConnectionsW(&rasConn, &structSize, &connections);

    // ERROR_BUFFER_TOO_SMALL is OK because we only need one struct.
    if (result == ERROR_SUCCESS || result == ERROR_BUFFER_TOO_SMALL)
    {
        return (connections > 0);
    }

    LOGE(("Autodial: ::RasEnumConnections failed: Error = %d", result));
    return false;
}

// Get the first RAS dial entry name from the phonebook.
nsresult nsAutodial::GetFirstEntryName(wchar_t* entryName, int bufferSize)
{
    RASENTRYNAMEW rasEntryName;
    rasEntryName.dwSize = sizeof(rasEntryName);
    DWORD cb = sizeof(rasEntryName);
    DWORD cEntries = 0;

    DWORD result = 
     RasEnumEntriesW(nullptr, nullptr, &rasEntryName, &cb, &cEntries);

    // ERROR_BUFFER_TOO_SMALL is OK because we only need one struct.
    if (result == ERROR_SUCCESS || result == ERROR_BUFFER_TOO_SMALL)
    {
        wcsncpy(entryName, rasEntryName.szEntryName,
                bufferSize / sizeof(*entryName));
        return NS_OK;
    }

    return NS_ERROR_FAILURE;
}

// Get the number of RAS dial entries in the phonebook.
int nsAutodial::NumRASEntries()
{
    RASENTRYNAMEW rasEntryName;
    rasEntryName.dwSize = sizeof(rasEntryName);
    DWORD cb = sizeof(rasEntryName);
    DWORD cEntries = 0;


    DWORD result = 
     RasEnumEntriesW(nullptr, nullptr, &rasEntryName, &cb, &cEntries);

    // ERROR_BUFFER_TOO_SMALL is OK because we only need one struct.
    if (result == ERROR_SUCCESS || result == ERROR_BUFFER_TOO_SMALL)
    {
        return (int)cEntries;
    }

    return 0;
}

// Get the name of the default dial entry.
nsresult nsAutodial::GetDefaultEntryName(wchar_t* entryName, int bufferSize)
{
    // No RAS dialup entries. 
    if (mNumRASConnectionEntries <= 0)
    {
        return NS_ERROR_FAILURE;
    }

    // Single RAS dialup entry. Use it as the default to autodial.
    if (mNumRASConnectionEntries == 1)
    {
        return GetFirstEntryName(entryName, bufferSize);
    }

    // Multiple RAS dialup entries. If a default configured in the registry,
    // use it. 
    //
    // For Windows XP: HKCU/Software/Microsoft/RAS Autodial/Default/DefaultInternet.
    //              or HKLM/Software/Microsoft/RAS Autodial/Default/DefaultInternet.

    const wchar_t* key = L"Software\\Microsoft\\RAS Autodial\\Default";
    const wchar_t* val = L"DefaultInternet";

    HKEY hKey = 0;
    LONG result = 0;

    
    // Try HKCU first.
    result = ::RegOpenKeyExW(
                HKEY_CURRENT_USER, 
                key, 
                0, 
                KEY_READ, 
                &hKey);

    if (result != ERROR_SUCCESS)
    {
        // If not present, try HKLM.
        result = ::RegOpenKeyExW(
                    HKEY_LOCAL_MACHINE, 
                    key, 
                    0, 
                    KEY_READ, 
                    &hKey);

        if (result != ERROR_SUCCESS)
        {
            return NS_ERROR_FAILURE;
        }
    }


    DWORD entryType = 0;
    DWORD buffSize = bufferSize;

    result = ::RegQueryValueExW(hKey, 
                                val, 
                                nullptr, 
                                &entryType, 
                                (LPBYTE)entryName, 
                                &buffSize);

    ::RegCloseKey(hKey);


    if (result != ERROR_SUCCESS)
    {
        // Results in a prompt for which to use at dial time.
        return NS_ERROR_FAILURE;
    }

    return NS_OK;
}


// Determine if the autodial service is running on this PC.
bool nsAutodial::IsAutodialServiceRunning()
{
    nsAutoServiceHandle hSCManager(OpenSCManager(nullptr, 
                                                 SERVICES_ACTIVE_DATABASE, 
                                                 SERVICE_QUERY_STATUS));

    if (hSCManager == nullptr)
    {
        LOGE(("Autodial: failed to open service control manager. Error %d.", 
          ::GetLastError()));

        return false;
    }

    nsAutoServiceHandle hService(OpenServiceW(hSCManager, 
                                              L"RasAuto", 
                                              SERVICE_QUERY_STATUS));

    if (hSCManager == nullptr)
    {
        LOGE(("Autodial: failed to open RasAuto service."));
        return false;
    }

    SERVICE_STATUS status;
    if (!QueryServiceStatus(hService, &status))
    {
        LOGE(("Autodial: ::QueryServiceStatus() failed. Error: %d", 
          ::GetLastError()));

        return false;
    }

    return (status.dwCurrentState == SERVICE_RUNNING);
}

// Add the specified address to the autodial directory.
bool nsAutodial::AddAddressToAutodialDirectory(char16ptr_t hostName)
{
    // First see if there is already a db entry for this address. 
    RASAUTODIALENTRYW autodialEntry;
    autodialEntry.dwSize = sizeof(autodialEntry);
    DWORD size = sizeof(autodialEntry);
    DWORD entries = 0;

    DWORD result = RasGetAutodialAddressW(hostName, 
                                          nullptr, 
                                          &autodialEntry, 
                                          &size, 
                                          &entries);

    // If there is already at least 1 entry in db for this address, return.
    if (result != ERROR_FILE_NOT_FOUND)
    {
        LOGD(("Autodial: Address %s already in autodial db.", hostName));
        return false;
    }

    autodialEntry.dwSize = sizeof(autodialEntry);
    autodialEntry.dwFlags = 0;
    autodialEntry.dwDialingLocation = mAutodialServiceDialingLocation;
    GetDefaultEntryName(autodialEntry.szEntry, sizeof(autodialEntry.szEntry));

    result = RasSetAutodialAddressW(hostName, 
                                    0, 
                                    &autodialEntry, 
                                    sizeof(autodialEntry), 
                                    1);

    if (result != ERROR_SUCCESS)
    {
        LOGE(("Autodial ::RasSetAutodialAddress failed result %d.", result));
        return false;
    }

    LOGD(("Autodial: Added address %s to RAS autodial db for entry %s.",
         hostName, NS_ConvertUTF16toUTF8(autodialEntry.szEntry).get()));

    return true;
}

// Get the current TAPI dialing location.
int nsAutodial::GetCurrentLocation()
{
    HKEY hKey = 0;
    LONG result = ::RegOpenKeyExW(
                    HKEY_LOCAL_MACHINE, 
                    L"Software\\Microsoft\\Windows\\CurrentVersion\\Telephony\\Locations", 
                    0, 
                    KEY_READ, 
                    &hKey);

    if (result != ERROR_SUCCESS)
    {
        LOGE(("Autodial: Error opening reg key ...CurrentVersion\\Telephony\\Locations"));
        return -1;
    }

    DWORD entryType = 0;
    DWORD location = 0;
    DWORD paramSize = sizeof(DWORD);

    result = ::RegQueryValueExW(hKey, L"CurrentID", nullptr, &entryType, (LPBYTE)&location, &paramSize);
    if (result != ERROR_SUCCESS)
    {
        ::RegCloseKey(hKey);
        LOGE(("Autodial: Error reading reg value CurrentID."));
        return -1;
    }

    ::RegCloseKey(hKey);
    return location;

}

// Check to see if autodial for the specified location is enabled. 
bool nsAutodial::IsAutodialServiceEnabled(int location)
{
    if (location < 0)
        return false;

    BOOL enabled;
    if (RasGetAutodialEnableW(location, &enabled) != ERROR_SUCCESS)
    {
        LOGE(("Autodial: Error calling RasGetAutodialEnable()"));
        return false;
    }

    return enabled;
}