qga/commands-win32.c

   1 /*
   2  * QEMU Guest Agent win32-specific command implementations
   3  *
   4  * Copyright IBM Corp. 2012
   5  *
   6  * Authors:
   7  *  Michael Roth      <mdroth@linux.vnet.ibm.com>
   8  *  Gal Hammer        <ghammer@redhat.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #ifndef _WIN32_WINNT
  15 #   define _WIN32_WINNT 0x0600
  16 #endif
  17
  18 #include "qemu/osdep.h"
  19 #include <wtypes.h>
  20 #include <powrprof.h>
  21 #include <winsock2.h>
  22 #include <ws2tcpip.h>
  23 #include <iptypes.h>
  24 #include <iphlpapi.h>
  25 #ifdef CONFIG_QGA_NTDDSCSI
  26 #include <winioctl.h>
  27 #include <ntddscsi.h>
  28 #include <setupapi.h>
  29 #include <initguid.h>
  30 #endif
  31 #include <lm.h>
  32 #include <wtsapi32.h>
  33 #include <wininet.h>
  34
  35 #include "guest-agent-core.h"
  36 #include "vss-win32.h"
  37 #include "qga-qapi-commands.h"
  38 #include "qapi/error.h"
  39 #include "qapi/qmp/qerror.h"
  40 #include "qemu/queue.h"
  41 #include "qemu/host-utils.h"
  42 #include "qemu/base64.h"
  43
  44 #ifndef SHTDN_REASON_FLAG_PLANNED
  45 #define SHTDN_REASON_FLAG_PLANNED 0x80000000
  46 #endif
  47
  48 /* multiple of 100 nanoseconds elapsed between windows baseline
  49  *    (1/1/1601) and Unix Epoch (1/1/1970), accounting for leap years */
  50 #define W32_FT_OFFSET (10000000ULL * 60 * 60 * 24 * \
  51                        (365 * (1970 - 1601) +       \
  52                         (1970 - 1601) / 4 - 3))
  53
  54 #define INVALID_SET_FILE_POINTER ((DWORD)-1)
  55
  56 typedef struct GuestFileHandle {
  57     int64_t id;
  58     HANDLE fh;
  59     QTAILQ_ENTRY(GuestFileHandle) next;
  60 } GuestFileHandle;
  61
  62 static struct {
  63     QTAILQ_HEAD(, GuestFileHandle) filehandles;
  64 } guest_file_state = {
  65     .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles),
  66 };
  67
  68 #define FILE_GENERIC_APPEND (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA)
  69
  70 typedef struct OpenFlags {
  71     const char *forms;
  72     DWORD desired_access;
  73     DWORD creation_disposition;
  74 } OpenFlags;
  75 static OpenFlags guest_file_open_modes[] = {
  76     {"r",   GENERIC_READ,                     OPEN_EXISTING},
  77     {"rb",  GENERIC_READ,                     OPEN_EXISTING},
  78     {"w",   GENERIC_WRITE,                    CREATE_ALWAYS},
  79     {"wb",  GENERIC_WRITE,                    CREATE_ALWAYS},
  80     {"a",   FILE_GENERIC_APPEND,              OPEN_ALWAYS  },
  81     {"r+",  GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  82     {"rb+", GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  83     {"r+b", GENERIC_WRITE|GENERIC_READ,       OPEN_EXISTING},
  84     {"w+",  GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  85     {"wb+", GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  86     {"w+b", GENERIC_WRITE|GENERIC_READ,       CREATE_ALWAYS},
  87     {"a+",  FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  },
  88     {"ab+", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  },
  89     {"a+b", FILE_GENERIC_APPEND|GENERIC_READ, OPEN_ALWAYS  }
  90 };
  91
  92 #define debug_error(msg) do { \
  93     char *suffix = g_win32_error_message(GetLastError()); \
  94     g_debug("%s: %s", (msg), suffix); \
  95     g_free(suffix); \
  96 } while (0)
  97
  98 static OpenFlags *find_open_flag(const char *mode_str)
  99 {
 100     int mode;
 101     Error **errp = NULL;
 102
 103     for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) {
 104         OpenFlags *flags = guest_file_open_modes + mode;
 105
 106         if (strcmp(flags->forms, mode_str) == 0) {
 107             return flags;
 108         }
 109     }
 110
 111     error_setg(errp, "invalid file open mode '%s'", mode_str);
 112     return NULL;
 113 }
 114
 115 static int64_t guest_file_handle_add(HANDLE fh, Error **errp)
 116 {
 117     GuestFileHandle *gfh;
 118     int64_t handle;
 119
 120     handle = ga_get_fd_handle(ga_state, errp);
 121     if (handle < 0) {
 122         return -1;
 123     }
 124     gfh = g_new0(GuestFileHandle, 1);
 125     gfh->id = handle;
 126     gfh->fh = fh;
 127     QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next);
 128
 129     return handle;
 130 }
 131
 132 static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp)
 133 {
 134     GuestFileHandle *gfh;
 135     QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) {
 136         if (gfh->id == id) {
 137             return gfh;
 138         }
 139     }
 140     error_setg(errp, "handle '%" PRId64 "' has not been found", id);
 141     return NULL;
 142 }
 143
 144 static void handle_set_nonblocking(HANDLE fh)
 145 {
 146     DWORD file_type, pipe_state;
 147     file_type = GetFileType(fh);
 148     if (file_type != FILE_TYPE_PIPE) {
 149         return;
 150     }
 151     /* If file_type == FILE_TYPE_PIPE, according to MSDN
 152      * the specified file is socket or named pipe */
 153     if (!GetNamedPipeHandleState(fh, &pipe_state, NULL,
 154                                  NULL, NULL, NULL, 0)) {
 155         return;
 156     }
 157     /* The fd is named pipe fd */
 158     if (pipe_state & PIPE_NOWAIT) {
 159         return;
 160     }
 161
 162     pipe_state |= PIPE_NOWAIT;
 163     SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
 164 }
 165
 166 int64_t qmp_guest_file_open(const char *path, bool has_mode,
 167                             const char *mode, Error **errp)
 168 {
 169     int64_t fd = -1;
 170     HANDLE fh;
 171     HANDLE templ_file = NULL;
 172     DWORD share_mode = FILE_SHARE_READ;
 173     DWORD flags_and_attr = FILE_ATTRIBUTE_NORMAL;
 174     LPSECURITY_ATTRIBUTES sa_attr = NULL;
 175     OpenFlags *guest_flags;
 176     GError *gerr = NULL;
 177     wchar_t *w_path = NULL;
 178
 179     if (!has_mode) {
 180         mode = "r";
 181     }
 182     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
 183     guest_flags = find_open_flag(mode);
 184     if (guest_flags == NULL) {
 185         error_setg(errp, "invalid file open mode");
 186         goto done;
 187     }
 188
 189     w_path = g_utf8_to_utf16(path, -1, NULL, NULL, &gerr);
 190     if (!w_path) {
 191         goto done;
 192     }
 193
 194     fh = CreateFileW(w_path, guest_flags->desired_access, share_mode, sa_attr,
 195                     guest_flags->creation_disposition, flags_and_attr,
 196                     templ_file);
 197     if (fh == INVALID_HANDLE_VALUE) {
 198         error_setg_win32(errp, GetLastError(), "failed to open file '%s'",
 199                          path);
 200         goto done;
 201     }
 202
 203     /* set fd non-blocking to avoid common use cases (like reading from a
 204      * named pipe) from hanging the agent
 205      */
 206     handle_set_nonblocking(fh);
 207
 208     fd = guest_file_handle_add(fh, errp);
 209     if (fd < 0) {
 210         CloseHandle(fh);
 211         error_setg(errp, "failed to add handle to qmp handle table");
 212         goto done;
 213     }
 214
 215     slog("guest-file-open, handle: % " PRId64, fd);
 216
 217 done:
 218     if (gerr) {
 219         error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
 220         g_error_free(gerr);
 221     }
 222     g_free(w_path);
 223     return fd;
 224 }
 225
 226 void qmp_guest_file_close(int64_t handle, Error **errp)
 227 {
 228     bool ret;
 229     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 230     slog("guest-file-close called, handle: %" PRId64, handle);
 231     if (gfh == NULL) {
 232         return;
 233     }
 234     ret = CloseHandle(gfh->fh);
 235     if (!ret) {
 236         error_setg_win32(errp, GetLastError(), "failed close handle");
 237         return;
 238     }
 239
 240     QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next);
 241     g_free(gfh);
 242 }
 243
 244 static void acquire_privilege(const char *name, Error **errp)
 245 {
 246     HANDLE token = NULL;
 247     TOKEN_PRIVILEGES priv;
 248     Error *local_err = NULL;
 249
 250     if (OpenProcessToken(GetCurrentProcess(),
 251         TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &token))
 252     {
 253         if (!LookupPrivilegeValue(NULL, name, &priv.Privileges[0].Luid)) {
 254             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 255                        "no luid for requested privilege");
 256             goto out;
 257         }
 258
 259         priv.PrivilegeCount = 1;
 260         priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 261
 262         if (!AdjustTokenPrivileges(token, FALSE, &priv, 0, NULL, 0)) {
 263             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 264                        "unable to acquire requested privilege");
 265             goto out;
 266         }
 267
 268     } else {
 269         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 270                    "failed to open privilege token");
 271     }
 272
 273 out:
 274     if (token) {
 275         CloseHandle(token);
 276     }
 277     error_propagate(errp, local_err);
 278 }
 279
 280 static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
 281                           Error **errp)
 282 {
 283     Error *local_err = NULL;
 284
 285     HANDLE thread = CreateThread(NULL, 0, func, opaque, 0, NULL);
 286     if (!thread) {
 287         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
 288                    "failed to dispatch asynchronous command");
 289         error_propagate(errp, local_err);
 290     }
 291 }
 292
 293 void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
 294 {
 295     Error *local_err = NULL;
 296     UINT shutdown_flag = EWX_FORCE;
 297
 298     slog("guest-shutdown called, mode: %s", mode);
 299
 300     if (!has_mode || strcmp(mode, "powerdown") == 0) {
 301         shutdown_flag |= EWX_POWEROFF;
 302     } else if (strcmp(mode, "halt") == 0) {
 303         shutdown_flag |= EWX_SHUTDOWN;
 304     } else if (strcmp(mode, "reboot") == 0) {
 305         shutdown_flag |= EWX_REBOOT;
 306     } else {
 307         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "mode",
 308                    "halt|powerdown|reboot");
 309         return;
 310     }
 311
 312     /* Request a shutdown privilege, but try to shut down the system
 313        anyway. */
 314     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
 315     if (local_err) {
 316         error_propagate(errp, local_err);
 317         return;
 318     }
 319
 320     if (!ExitWindowsEx(shutdown_flag, SHTDN_REASON_FLAG_PLANNED)) {
 321         slog("guest-shutdown failed: %lu", GetLastError());
 322         error_setg(errp, QERR_UNDEFINED_ERROR);
 323     }
 324 }
 325
 326 GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
 327                                    int64_t count, Error **errp)
 328 {
 329     GuestFileRead *read_data = NULL;
 330     guchar *buf;
 331     HANDLE fh;
 332     bool is_ok;
 333     DWORD read_count;
 334     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 335
 336     if (!gfh) {
 337         return NULL;
 338     }
 339     if (!has_count) {
 340         count = QGA_READ_COUNT_DEFAULT;
 341     } else if (count < 0 || count >= UINT32_MAX) {
 342         error_setg(errp, "value '%" PRId64
 343                    "' is invalid for argument count", count);
 344         return NULL;
 345     }
 346
 347     fh = gfh->fh;
 348     buf = g_malloc0(count+1);
 349     is_ok = ReadFile(fh, buf, count, &read_count, NULL);
 350     if (!is_ok) {
 351         error_setg_win32(errp, GetLastError(), "failed to read file");
 352         slog("guest-file-read failed, handle %" PRId64, handle);
 353     } else {
 354         buf[read_count] = 0;
 355         read_data = g_new0(GuestFileRead, 1);
 356         read_data->count = (size_t)read_count;
 357         read_data->eof = read_count == 0;
 358
 359         if (read_count != 0) {
 360             read_data->buf_b64 = g_base64_encode(buf, read_count);
 361         }
 362     }
 363     g_free(buf);
 364
 365     return read_data;
 366 }
 367
 368 GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
 369                                      bool has_count, int64_t count,
 370                                      Error **errp)
 371 {
 372     GuestFileWrite *write_data = NULL;
 373     guchar *buf;
 374     gsize buf_len;
 375     bool is_ok;
 376     DWORD write_count;
 377     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 378     HANDLE fh;
 379
 380     if (!gfh) {
 381         return NULL;
 382     }
 383     fh = gfh->fh;
 384     buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
 385     if (!buf) {
 386         return NULL;
 387     }
 388
 389     if (!has_count) {
 390         count = buf_len;
 391     } else if (count < 0 || count > buf_len) {
 392         error_setg(errp, "value '%" PRId64
 393                    "' is invalid for argument count", count);
 394         goto done;
 395     }
 396
 397     is_ok = WriteFile(fh, buf, count, &write_count, NULL);
 398     if (!is_ok) {
 399         error_setg_win32(errp, GetLastError(), "failed to write to file");
 400         slog("guest-file-write-failed, handle: %" PRId64, handle);
 401     } else {
 402         write_data = g_new0(GuestFileWrite, 1);
 403         write_data->count = (size_t) write_count;
 404     }
 405
 406 done:
 407     g_free(buf);
 408     return write_data;
 409 }
 410
 411 GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
 412                                    GuestFileWhence *whence_code,
 413                                    Error **errp)
 414 {
 415     GuestFileHandle *gfh;
 416     GuestFileSeek *seek_data;
 417     HANDLE fh;
 418     LARGE_INTEGER new_pos, off_pos;
 419     off_pos.QuadPart = offset;
 420     BOOL res;
 421     int whence;
 422     Error *err = NULL;
 423
 424     gfh = guest_file_handle_find(handle, errp);
 425     if (!gfh) {
 426         return NULL;
 427     }
 428
 429     /* We stupidly exposed 'whence':'int' in our qapi */
 430     whence = ga_parse_whence(whence_code, &err);
 431     if (err) {
 432         error_propagate(errp, err);
 433         return NULL;
 434     }
 435
 436     fh = gfh->fh;
 437     res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
 438     if (!res) {
 439         error_setg_win32(errp, GetLastError(), "failed to seek file");
 440         return NULL;
 441     }
 442     seek_data = g_new0(GuestFileSeek, 1);
 443     seek_data->position = new_pos.QuadPart;
 444     return seek_data;
 445 }
 446
 447 void qmp_guest_file_flush(int64_t handle, Error **errp)
 448 {
 449     HANDLE fh;
 450     GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
 451     if (!gfh) {
 452         return;
 453     }
 454
 455     fh = gfh->fh;
 456     if (!FlushFileBuffers(fh)) {
 457         error_setg_win32(errp, GetLastError(), "failed to flush file");
 458     }
 459 }
 460
 461 #ifdef CONFIG_QGA_NTDDSCSI
 462
 463 static STORAGE_BUS_TYPE win2qemu[] = {
 464     [BusTypeUnknown] = GUEST_DISK_BUS_TYPE_UNKNOWN,
 465     [BusTypeScsi] = GUEST_DISK_BUS_TYPE_SCSI,
 466     [BusTypeAtapi] = GUEST_DISK_BUS_TYPE_IDE,
 467     [BusTypeAta] = GUEST_DISK_BUS_TYPE_IDE,
 468     [BusType1394] = GUEST_DISK_BUS_TYPE_IEEE1394,
 469     [BusTypeSsa] = GUEST_DISK_BUS_TYPE_SSA,
 470     [BusTypeFibre] = GUEST_DISK_BUS_TYPE_SSA,
 471     [BusTypeUsb] = GUEST_DISK_BUS_TYPE_USB,
 472     [BusTypeRAID] = GUEST_DISK_BUS_TYPE_RAID,
 473 #if (_WIN32_WINNT >= 0x0600)
 474     [BusTypeiScsi] = GUEST_DISK_BUS_TYPE_ISCSI,
 475     [BusTypeSas] = GUEST_DISK_BUS_TYPE_SAS,
 476     [BusTypeSata] = GUEST_DISK_BUS_TYPE_SATA,
 477     [BusTypeSd] =  GUEST_DISK_BUS_TYPE_SD,
 478     [BusTypeMmc] = GUEST_DISK_BUS_TYPE_MMC,
 479 #endif
 480 #if (_WIN32_WINNT >= 0x0601)
 481     [BusTypeVirtual] = GUEST_DISK_BUS_TYPE_VIRTUAL,
 482     [BusTypeFileBackedVirtual] = GUEST_DISK_BUS_TYPE_FILE_BACKED_VIRTUAL,
 483 #endif
 484 };
 485
 486 static GuestDiskBusType find_bus_type(STORAGE_BUS_TYPE bus)
 487 {
 488     if (bus >= ARRAY_SIZE(win2qemu) || (int)bus < 0) {
 489         return GUEST_DISK_BUS_TYPE_UNKNOWN;
 490     }
 491     return win2qemu[(int)bus];
 492 }
 493
 494 /* XXX: The following function is BROKEN!
 495  *
 496  * It does not work and probably has never worked. When we query for list of
 497  * disks we get cryptic names like "\Device\0000001d" instead of
 498  * "\PhysicalDriveX" or "\HarddiskX". Whether the names can be translated one
 499  * way or the other for comparison is an open question.
 500  *
 501  * When we query volume names (the original version) we are able to match those
 502  * but then the property queries report error "Invalid function". (duh!)
 503  */
 504
 505 /*
 506 DEFINE_GUID(GUID_DEVINTERFACE_VOLUME,
 507         0x53f5630dL, 0xb6bf, 0x11d0, 0x94, 0xf2,
 508         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
 509 */
 510 DEFINE_GUID(GUID_DEVINTERFACE_DISK,
 511         0x53f56307L, 0xb6bf, 0x11d0, 0x94, 0xf2,
 512         0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);
 513
 514
 515 static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
 516 {
 517     HDEVINFO dev_info;
 518     SP_DEVINFO_DATA dev_info_data;
 519     DWORD size = 0;
 520     int i;
 521     char dev_name[MAX_PATH];
 522     char *buffer = NULL;
 523     GuestPCIAddress *pci = NULL;
 524     char *name = NULL;
 525     bool partial_pci = false;
 526     pci = g_malloc0(sizeof(*pci));
 527     pci->domain = -1;
 528     pci->slot = -1;
 529     pci->function = -1;
 530     pci->bus = -1;
 531
 532     if (g_str_has_prefix(guid, "\\\\.\\") ||
 533         g_str_has_prefix(guid, "\\\\?\\")) {
 534         name = g_strdup(guid + 4);
 535     } else {
 536         name = g_strdup(guid);
 537     }
 538
 539     if (!QueryDosDevice(name, dev_name, ARRAY_SIZE(dev_name))) {
 540         error_setg_win32(errp, GetLastError(), "failed to get dos device name");
 541         goto out;
 542     }
 543
 544     dev_info = SetupDiGetClassDevs(&GUID_DEVINTERFACE_DISK, 0, 0,
 545                                    DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
 546     if (dev_info == INVALID_HANDLE_VALUE) {
 547         error_setg_win32(errp, GetLastError(), "failed to get devices tree");
 548         goto out;
 549     }
 550
 551     g_debug("enumerating devices");
 552     dev_info_data.cbSize = sizeof(SP_DEVINFO_DATA);
 553     for (i = 0; SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data); i++) {
 554         DWORD addr, bus, slot, data, size2;
 555         int func, dev;
 556         while (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 557                                             SPDRP_PHYSICAL_DEVICE_OBJECT_NAME,
 558                                             &data, (PBYTE)buffer, size,
 559                                             &size2)) {
 560             size = MAX(size, size2);
 561             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
 562                 g_free(buffer);
 563                 /* Double the size to avoid problems on
 564                  * W2k MBCS systems per KB 888609.
 565                  * https://support.microsoft.com/en-us/kb/259695 */
 566                 buffer = g_malloc(size * 2);
 567             } else {
 568                 error_setg_win32(errp, GetLastError(),
 569                         "failed to get device name");
 570                 goto free_dev_info;
 571             }
 572         }
 573
 574         if (g_strcmp0(buffer, dev_name)) {
 575             continue;
 576         }
 577         g_debug("found device %s", dev_name);
 578
 579         /* There is no need to allocate buffer in the next functions. The size
 580          * is known and ULONG according to
 581          * https://support.microsoft.com/en-us/kb/253232
 582          * https://msdn.microsoft.com/en-us/library/windows/hardware/ff543095(v=vs.85).aspx
 583          */
 584         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 585                    SPDRP_BUSNUMBER, &data, (PBYTE)&bus, size, NULL)) {
 586             debug_error("failed to get bus");
 587             bus = -1;
 588             partial_pci = true;
 589         }
 590
 591         /* The function retrieves the device's address. This value will be
 592          * transformed into device function and number */
 593         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 594                    SPDRP_ADDRESS, &data, (PBYTE)&addr, size, NULL)) {
 595             debug_error("failed to get address");
 596             addr = -1;
 597             partial_pci = true;
 598         }
 599
 600         /* This call returns UINumber of DEVICE_CAPABILITIES structure.
 601          * This number is typically a user-perceived slot number. */
 602         if (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data,
 603                    SPDRP_UI_NUMBER, &data, (PBYTE)&slot, size, NULL)) {
 604             debug_error("failed to get slot");
 605             slot = -1;
 606             partial_pci = true;
 607         }
 608
 609         /* SetupApi gives us the same information as driver with
 610          * IoGetDeviceProperty. According to Microsoft
 611          * https://support.microsoft.com/en-us/kb/253232
 612          * FunctionNumber = (USHORT)((propertyAddress) & 0x0000FFFF);
 613          * DeviceNumber = (USHORT)(((propertyAddress) >> 16) & 0x0000FFFF);
 614          * SPDRP_ADDRESS is propertyAddress, so we do the same.*/
 615
 616         if (partial_pci) {
 617             pci->domain = -1;
 618             pci->slot = -1;
 619             pci->function = -1;
 620             pci->bus = -1;
 621         } else {
 622             func = ((int) addr == -1) ? -1 : addr & 0x0000FFFF;
 623             dev = ((int) addr == -1) ? -1 : (addr >> 16) & 0x0000FFFF;
 624             pci->domain = dev;
 625             pci->slot = (int) slot;
 626             pci->function = func;
 627             pci->bus = (int) bus;
 628         }
 629         break;
 630     }
 631
 632 free_dev_info:
 633     SetupDiDestroyDeviceInfoList(dev_info);
 634 out:
 635     g_free(buffer);
 636     g_free(name);
 637     return pci;
 638 }
 639
 640 static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk,
 641     Error **errp)
 642 {
 643     STORAGE_PROPERTY_QUERY query;
 644     STORAGE_DEVICE_DESCRIPTOR *dev_desc, buf;
 645     DWORD received;
 646     ULONG size = sizeof(buf);
 647
 648     dev_desc = &buf;
 649     query.PropertyId = StorageDeviceProperty;
 650     query.QueryType = PropertyStandardQuery;
 651
 652     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
 653                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
 654                          size, &received, NULL)) {
 655         error_setg_win32(errp, GetLastError(), "failed to get bus type");
 656         return;
 657     }
 658     disk->bus_type = find_bus_type(dev_desc->BusType);
 659     g_debug("bus type %d", disk->bus_type);
 660
 661     /* Query once more. Now with long enough buffer. */
 662     size = dev_desc->Size;
 663     dev_desc = g_malloc0(size);
 664     if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query,
 665                          sizeof(STORAGE_PROPERTY_QUERY), dev_desc,
 666                          size, &received, NULL)) {
 667         error_setg_win32(errp, GetLastError(), "failed to get serial number");
 668         g_debug("failed to get serial number");
 669         goto out_free;
 670     }
 671     if (dev_desc->SerialNumberOffset > 0) {
 672         const char *serial;
 673         size_t len;
 674
 675         if (dev_desc->SerialNumberOffset >= received) {
 676             error_setg(errp, "failed to get serial number: offset outside the buffer");
 677             g_debug("serial number offset outside the buffer");
 678             goto out_free;
 679         }
 680         serial = (char *)dev_desc + dev_desc->SerialNumberOffset;
 681         len = received - dev_desc->SerialNumberOffset;
 682         g_debug("serial number \"%s\"", serial);
 683         if (*serial != 0) {
 684             disk->serial = g_strndup(serial, len);
 685             disk->has_serial = true;
 686         }
 687     }
 688 out_free:
 689     g_free(dev_desc);
 690
 691     return;
 692 }
 693
 694 static void get_single_disk_info(GuestDiskAddress *disk, Error **errp)
 695 {
 696     SCSI_ADDRESS addr, *scsi_ad;
 697     DWORD len;
 698     HANDLE disk_h;
 699     Error *local_err = NULL;
 700
 701     scsi_ad = &addr;
 702
 703     g_debug("getting disk info for: %s", disk->dev);
 704     disk_h = CreateFile(disk->dev, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
 705                        0, NULL);
 706     if (disk_h == INVALID_HANDLE_VALUE) {
 707         error_setg_win32(errp, GetLastError(), "failed to open disk");
 708         return;
 709     }
 710
 711     get_disk_properties(disk_h, disk, &local_err);
 712     if (local_err) {
 713         error_propagate(errp, local_err);
 714         goto err_close;
 715     }
 716
 717     g_debug("bus type %d", disk->bus_type);
 718     /* always set pci_controller as required by schema. get_pci_info() should
 719      * report -1 values for non-PCI buses rather than fail. fail the command
 720      * if that doesn't hold since that suggests some other unexpected
 721      * breakage
 722      */
 723     disk->pci_controller = get_pci_info(disk->dev, &local_err);
 724     if (local_err) {
 725         error_propagate(errp, local_err);
 726         goto err_close;
 727     }
 728     if (disk->bus_type == GUEST_DISK_BUS_TYPE_SCSI
 729             || disk->bus_type == GUEST_DISK_BUS_TYPE_IDE
 730             || disk->bus_type == GUEST_DISK_BUS_TYPE_RAID
 731 #if (_WIN32_WINNT >= 0x0600)
 732             /* This bus type is not supported before Windows Server 2003 SP1 */
 733             || disk->bus_type == GUEST_DISK_BUS_TYPE_SAS
 734 #endif
 735         ) {
 736         /* We are able to use the same ioctls for different bus types
 737          * according to Microsoft docs
 738          * https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx */
 739         g_debug("getting pci-controller info");
 740         if (DeviceIoControl(disk_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
 741                             sizeof(SCSI_ADDRESS), &len, NULL)) {
 742             disk->unit = addr.Lun;
 743             disk->target = addr.TargetId;
 744             disk->bus = addr.PathId;
 745         }
 746         /* We do not set error in this case, because we still have enough
 747          * information about volume. */
 748     }
 749
 750 err_close:
 751     CloseHandle(disk_h);
 752     return;
 753 }
 754
 755 /* VSS provider works with volumes, thus there is no difference if
 756  * the volume consist of spanned disks. Info about the first disk in the
 757  * volume is returned for the spanned disk group (LVM) */
 758 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
 759 {
 760     Error *local_err = NULL;
 761     GuestDiskAddressList *list = NULL, *cur_item = NULL;
 762     GuestDiskAddress *disk = NULL;
 763     int i;
 764     HANDLE vol_h;
 765     DWORD size;
 766     PVOLUME_DISK_EXTENTS extents = NULL;
 767
 768     /* strip final backslash */
 769     char *name = g_strdup(guid);
 770     if (g_str_has_suffix(name, "\\")) {
 771         name[strlen(name) - 1] = 0;
 772     }
 773
 774     g_debug("opening %s", name);
 775     vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
 776                        0, NULL);
 777     if (vol_h == INVALID_HANDLE_VALUE) {
 778         error_setg_win32(errp, GetLastError(), "failed to open volume");
 779         goto out;
 780     }
 781
 782     /* Get list of extents */
 783     g_debug("getting disk extents");
 784     size = sizeof(VOLUME_DISK_EXTENTS);
 785     extents = g_malloc0(size);
 786     if (!DeviceIoControl(vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
 787                          0, extents, size, NULL, NULL)) {
 788         DWORD last_err = GetLastError();
 789         if (last_err == ERROR_MORE_DATA) {
 790             /* Try once more with big enough buffer */
 791             size = sizeof(VOLUME_DISK_EXTENTS)
 792                 + extents->NumberOfDiskExtents*sizeof(DISK_EXTENT);
 793             g_free(extents);
 794             extents = g_malloc0(size);
 795             if (!DeviceIoControl(
 796                     vol_h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL,
 797                     0, extents, size, NULL, NULL)) {
 798                 error_setg_win32(errp, GetLastError(),
 799                     "failed to get disk extents");
 800                 goto out;
 801             }
 802         } else if (last_err == ERROR_INVALID_FUNCTION) {
 803             /* Possibly CD-ROM or a shared drive. Try to pass the volume */
 804             g_debug("volume not on disk");
 805             disk = g_malloc0(sizeof(GuestDiskAddress));
 806             disk->has_dev = true;
 807             disk->dev = g_strdup(name);
 808             get_single_disk_info(disk, &local_err);
 809             if (local_err) {
 810                 g_debug("failed to get disk info, ignoring error: %s",
 811                     error_get_pretty(local_err));
 812                 error_free(local_err);
 813                 goto out;
 814             }
 815             list = g_malloc0(sizeof(*list));
 816             list->value = disk;
 817             disk = NULL;
 818             list->next = NULL;
 819             goto out;
 820         } else {
 821             error_setg_win32(errp, GetLastError(),
 822                 "failed to get disk extents");
 823             goto out;
 824         }
 825     }
 826     g_debug("Number of extents: %lu", extents->NumberOfDiskExtents);
 827
 828     /* Go through each extent */
 829     for (i = 0; i < extents->NumberOfDiskExtents; i++) {
 830         disk = g_malloc0(sizeof(GuestDiskAddress));
 831
 832         /* Disk numbers directly correspond to numbers used in UNCs
 833          *
 834          * See documentation for DISK_EXTENT:
 835          * https://docs.microsoft.com/en-us/windows/desktop/api/winioctl/ns-winioctl-_disk_extent
 836          *
 837          * See also Naming Files, Paths and Namespaces:
 838          * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces
 839          */
 840         disk->has_dev = true;
 841         disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
 842             extents->Extents[i].DiskNumber);
 843
 844         get_single_disk_info(disk, &local_err);
 845         if (local_err) {
 846             error_propagate(errp, local_err);
 847             goto out;
 848         }
 849         cur_item = g_malloc0(sizeof(*list));
 850         cur_item->value = disk;
 851         disk = NULL;
 852         cur_item->next = list;
 853         list = cur_item;
 854     }
 855
 856
 857 out:
 858     if (vol_h != INVALID_HANDLE_VALUE) {
 859         CloseHandle(vol_h);
 860     }
 861     qapi_free_GuestDiskAddress(disk);
 862     g_free(extents);
 863     g_free(name);
 864
 865     return list;
 866 }
 867
 868 #else
 869
 870 static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
 871 {
 872     return NULL;
 873 }
 874
 875 #endif /* CONFIG_QGA_NTDDSCSI */
 876
 877 static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
 878 {
 879     DWORD info_size;
 880     char mnt, *mnt_point;
 881     char fs_name[32];
 882     char vol_info[MAX_PATH+1];
 883     size_t len;
 884     uint64_t i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
 885     GuestFilesystemInfo *fs = NULL;
 886
 887     GetVolumePathNamesForVolumeName(guid, (LPCH)&mnt, 0, &info_size);
 888     if (GetLastError() != ERROR_MORE_DATA) {
 889         error_setg_win32(errp, GetLastError(), "failed to get volume name");
 890         return NULL;
 891     }
 892
 893     mnt_point = g_malloc(info_size + 1);
 894     if (!GetVolumePathNamesForVolumeName(guid, mnt_point, info_size,
 895                                          &info_size)) {
 896         error_setg_win32(errp, GetLastError(), "failed to get volume name");
 897         goto free;
 898     }
 899
 900     len = strlen(mnt_point);
 901     mnt_point[len] = '\\';
 902     mnt_point[len+1] = 0;
 903     if (!GetVolumeInformation(mnt_point, vol_info, sizeof(vol_info), NULL, NULL,
 904                               NULL, (LPSTR)&fs_name, sizeof(fs_name))) {
 905         if (GetLastError() != ERROR_NOT_READY) {
 906             error_setg_win32(errp, GetLastError(), "failed to get volume info");
 907         }
 908         goto free;
 909     }
 910
 911     fs_name[sizeof(fs_name) - 1] = 0;
 912     fs = g_malloc(sizeof(*fs));
 913     fs->name = g_strdup(guid);
 914     fs->has_total_bytes = false;
 915     fs->has_used_bytes = false;
 916     if (len == 0) {
 917         fs->mountpoint = g_strdup("System Reserved");
 918     } else {
 919         fs->mountpoint = g_strndup(mnt_point, len);
 920         if (GetDiskFreeSpaceEx(fs->mountpoint,
 921                                (PULARGE_INTEGER) & i64FreeBytesToCaller,
 922                                (PULARGE_INTEGER) & i64TotalBytes,
 923                                (PULARGE_INTEGER) & i64FreeBytes)) {
 924             fs->used_bytes = i64TotalBytes - i64FreeBytes;
 925             fs->total_bytes = i64TotalBytes;
 926             fs->has_total_bytes = true;
 927             fs->has_used_bytes = true;
 928         }
 929     }
 930     fs->type = g_strdup(fs_name);
 931     fs->disk = build_guest_disk_info(guid, errp);
 932 free:
 933     g_free(mnt_point);
 934     return fs;
 935 }
 936
 937 GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
 938 {
 939     HANDLE vol_h;
 940     GuestFilesystemInfoList *new, *ret = NULL;
 941     char guid[256];
 942
 943     vol_h = FindFirstVolume(guid, sizeof(guid));
 944     if (vol_h == INVALID_HANDLE_VALUE) {
 945         error_setg_win32(errp, GetLastError(), "failed to find any volume");
 946         return NULL;
 947     }
 948
 949     do {
 950         GuestFilesystemInfo *info = build_guest_fsinfo(guid, errp);
 951         if (info == NULL) {
 952             continue;
 953         }
 954         new = g_malloc(sizeof(*ret));
 955         new->value = info;
 956         new->next = ret;
 957         ret = new;
 958     } while (FindNextVolume(vol_h, guid, sizeof(guid)));
 959
 960     if (GetLastError() != ERROR_NO_MORE_FILES) {
 961         error_setg_win32(errp, GetLastError(), "failed to find next volume");
 962     }
 963
 964     FindVolumeClose(vol_h);
 965     return ret;
 966 }
 967
 968 /*
 969  * Return status of freeze/thaw
 970  */
 971 GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp)
 972 {
 973     if (!vss_initialized()) {
 974         error_setg(errp, QERR_UNSUPPORTED);
 975         return 0;
 976     }
 977
 978     if (ga_is_frozen(ga_state)) {
 979         return GUEST_FSFREEZE_STATUS_FROZEN;
 980     }
 981
 982     return GUEST_FSFREEZE_STATUS_THAWED;
 983 }
 984
 985 /*
 986  * Freeze local file systems using Volume Shadow-copy Service.
 987  * The frozen state is limited for up to 10 seconds by VSS.
 988  */
 989 int64_t qmp_guest_fsfreeze_freeze(Error **errp)
 990 {
 991     return qmp_guest_fsfreeze_freeze_list(false, NULL, errp);
 992 }
 993
 994 int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints,
 995                                        strList *mountpoints,
 996                                        Error **errp)
 997 {
 998     int i;
 999     Error *local_err = NULL;
1000
1001     if (!vss_initialized()) {
1002         error_setg(errp, QERR_UNSUPPORTED);
1003         return 0;
1004     }
1005
1006     slog("guest-fsfreeze called");
1007
1008     /* cannot risk guest agent blocking itself on a write in this state */
1009     ga_set_frozen(ga_state);
1010
1011     qga_vss_fsfreeze(&i, true, mountpoints, &local_err);
1012     if (local_err) {
1013         error_propagate(errp, local_err);
1014         goto error;
1015     }
1016
1017     return i;
1018
1019 error:
1020     local_err = NULL;
1021     qmp_guest_fsfreeze_thaw(&local_err);
1022     if (local_err) {
1023         g_debug("cleanup thaw: %s", error_get_pretty(local_err));
1024         error_free(local_err);
1025     }
1026     return 0;
1027 }
1028
1029 /*
1030  * Thaw local file systems using Volume Shadow-copy Service.
1031  */
1032 int64_t qmp_guest_fsfreeze_thaw(Error **errp)
1033 {
1034     int i;
1035
1036     if (!vss_initialized()) {
1037         error_setg(errp, QERR_UNSUPPORTED);
1038         return 0;
1039     }
1040
1041     qga_vss_fsfreeze(&i, false, NULL, errp);
1042
1043     ga_unset_frozen(ga_state);
1044     return i;
1045 }
1046
1047 static void guest_fsfreeze_cleanup(void)
1048 {
1049     Error *err = NULL;
1050
1051     if (!vss_initialized()) {
1052         return;
1053     }
1054
1055     if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) {
1056         qmp_guest_fsfreeze_thaw(&err);
1057         if (err) {
1058             slog("failed to clean up frozen filesystems: %s",
1059                  error_get_pretty(err));
1060             error_free(err);
1061         }
1062     }
1063
1064     vss_deinit(true);
1065 }
1066
1067 /*
1068  * Walk list of mounted file systems in the guest, and discard unused
1069  * areas.
1070  */
1071 GuestFilesystemTrimResponse *
1072 qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
1073 {
1074     GuestFilesystemTrimResponse *resp;
1075     HANDLE handle;
1076     WCHAR guid[MAX_PATH] = L"";
1077     OSVERSIONINFO osvi;
1078     BOOL win8_or_later;
1079
1080     ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
1081     osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1082     GetVersionEx(&osvi);
1083     win8_or_later = (osvi.dwMajorVersion > 6 ||
1084                           ((osvi.dwMajorVersion == 6) &&
1085                            (osvi.dwMinorVersion >= 2)));
1086     if (!win8_or_later) {
1087         error_setg(errp, "fstrim is only supported for Win8+");
1088         return NULL;
1089     }
1090
1091     handle = FindFirstVolumeW(guid, ARRAYSIZE(guid));
1092     if (handle == INVALID_HANDLE_VALUE) {
1093         error_setg_win32(errp, GetLastError(), "failed to find any volume");
1094         return NULL;
1095     }
1096
1097     resp = g_new0(GuestFilesystemTrimResponse, 1);
1098
1099     do {
1100         GuestFilesystemTrimResult *res;
1101         GuestFilesystemTrimResultList *list;
1102         PWCHAR uc_path;
1103         DWORD char_count = 0;
1104         char *path, *out;
1105         GError *gerr = NULL;
1106         gchar * argv[4];
1107
1108         GetVolumePathNamesForVolumeNameW(guid, NULL, 0, &char_count);
1109
1110         if (GetLastError() != ERROR_MORE_DATA) {
1111             continue;
1112         }
1113         if (GetDriveTypeW(guid) != DRIVE_FIXED) {
1114             continue;
1115         }
1116
1117         uc_path = g_malloc(sizeof(WCHAR) * char_count);
1118         if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count,
1119                                               &char_count) || !*uc_path) {
1120             /* strange, but this condition could be faced even with size == 2 */
1121             g_free(uc_path);
1122             continue;
1123         }
1124
1125         res = g_new0(GuestFilesystemTrimResult, 1);
1126
1127         path = g_utf16_to_utf8(uc_path, char_count, NULL, NULL, &gerr);
1128
1129         g_free(uc_path);
1130
1131         if (!path) {
1132             res->has_error = true;
1133             res->error = g_strdup(gerr->message);
1134             g_error_free(gerr);
1135             break;
1136         }
1137
1138         res->path = path;
1139
1140         list = g_new0(GuestFilesystemTrimResultList, 1);
1141         list->value = res;
1142         list->next = resp->paths;
1143
1144         resp->paths = list;
1145
1146         memset(argv, 0, sizeof(argv));
1147         argv[0] = (gchar *)"defrag.exe";
1148         argv[1] = (gchar *)"/L";
1149         argv[2] = path;
1150
1151         if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
1152                           &out /* stdout */, NULL /* stdin */,
1153                           NULL, &gerr)) {
1154             res->has_error = true;
1155             res->error = g_strdup(gerr->message);
1156             g_error_free(gerr);
1157         } else {
1158             /* defrag.exe is UGLY. Exit code is ALWAYS zero.
1159                Error is reported in the output with something like
1160                (x89000020) etc code in the stdout */
1161
1162             int i;
1163             gchar **lines = g_strsplit(out, "\r\n", 0);
1164             g_free(out);
1165
1166             for (i = 0; lines[i] != NULL; i++) {
1167                 if (g_strstr_len(lines[i], -1, "(0x") == NULL) {
1168                     continue;
1169                 }
1170                 res->has_error = true;
1171                 res->error = g_strdup(lines[i]);
1172                 break;
1173             }
1174             g_strfreev(lines);
1175         }
1176     } while (FindNextVolumeW(handle, guid, ARRAYSIZE(guid)));
1177
1178     FindVolumeClose(handle);
1179     return resp;
1180 }
1181
1182 typedef enum {
1183     GUEST_SUSPEND_MODE_DISK,
1184     GUEST_SUSPEND_MODE_RAM
1185 } GuestSuspendMode;
1186
1187 static void check_suspend_mode(GuestSuspendMode mode, Error **errp)
1188 {
1189     SYSTEM_POWER_CAPABILITIES sys_pwr_caps;
1190     Error *local_err = NULL;
1191
1192     ZeroMemory(&sys_pwr_caps, sizeof(sys_pwr_caps));
1193     if (!GetPwrCapabilities(&sys_pwr_caps)) {
1194         error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
1195                    "failed to determine guest suspend capabilities");
1196         goto out;
1197     }
1198
1199     switch (mode) {
1200     case GUEST_SUSPEND_MODE_DISK:
1201         if (!sys_pwr_caps.SystemS4) {
1202             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
1203                        "suspend-to-disk not supported by OS");
1204         }
1205         break;
1206     case GUEST_SUSPEND_MODE_RAM:
1207         if (!sys_pwr_caps.SystemS3) {
1208             error_setg(&local_err, QERR_QGA_COMMAND_FAILED,
1209                        "suspend-to-ram not supported by OS");
1210         }
1211         break;
1212     default:
1213         error_setg(&local_err, QERR_INVALID_PARAMETER_VALUE, "mode",
1214                    "GuestSuspendMode");
1215     }
1216
1217 out:
1218     error_propagate(errp, local_err);
1219 }
1220
1221 static DWORD WINAPI do_suspend(LPVOID opaque)
1222 {
1223     GuestSuspendMode *mode = opaque;
1224     DWORD ret = 0;
1225
1226     if (!SetSuspendState(*mode == GUEST_SUSPEND_MODE_DISK, TRUE, TRUE)) {
1227         slog("failed to suspend guest, %lu", GetLastError());
1228         ret = -1;
1229     }
1230     g_free(mode);
1231     return ret;
1232 }
1233
1234 void qmp_guest_suspend_disk(Error **errp)
1235 {
1236     Error *local_err = NULL;
1237     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1238
1239     *mode = GUEST_SUSPEND_MODE_DISK;
1240     check_suspend_mode(*mode, &local_err);
1241     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1242     execute_async(do_suspend, mode, &local_err);
1243
1244     if (local_err) {
1245         error_propagate(errp, local_err);
1246         g_free(mode);
1247     }
1248 }
1249
1250 void qmp_guest_suspend_ram(Error **errp)
1251 {
1252     Error *local_err = NULL;
1253     GuestSuspendMode *mode = g_new(GuestSuspendMode, 1);
1254
1255     *mode = GUEST_SUSPEND_MODE_RAM;
1256     check_suspend_mode(*mode, &local_err);
1257     acquire_privilege(SE_SHUTDOWN_NAME, &local_err);
1258     execute_async(do_suspend, mode, &local_err);
1259
1260     if (local_err) {
1261         error_propagate(errp, local_err);
1262         g_free(mode);
1263     }
1264 }
1265
1266 void qmp_guest_suspend_hybrid(Error **errp)
1267 {
1268     error_setg(errp, QERR_UNSUPPORTED);
1269 }
1270
1271 static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp)
1272 {
1273     IP_ADAPTER_ADDRESSES *adptr_addrs = NULL;
1274     ULONG adptr_addrs_len = 0;
1275     DWORD ret;
1276
1277     /* Call the first time to get the adptr_addrs_len. */
1278     GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1279                          NULL, adptr_addrs, &adptr_addrs_len);
1280
1281     adptr_addrs = g_malloc(adptr_addrs_len);
1282     ret = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
1283                                NULL, adptr_addrs, &adptr_addrs_len);
1284     if (ret != ERROR_SUCCESS) {
1285         error_setg_win32(errp, ret, "failed to get adapters addresses");
1286         g_free(adptr_addrs);
1287         adptr_addrs = NULL;
1288     }
1289     return adptr_addrs;
1290 }
1291
1292 static char *guest_wctomb_dup(WCHAR *wstr)
1293 {
1294     char *str;
1295     size_t i;
1296
1297     i = wcslen(wstr) + 1;
1298     str = g_malloc(i);
1299     WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK,
1300                         wstr, -1, str, i, NULL, NULL);
1301     return str;
1302 }
1303
1304 static char *guest_addr_to_str(IP_ADAPTER_UNICAST_ADDRESS *ip_addr,
1305                                Error **errp)
1306 {
1307     char addr_str[INET6_ADDRSTRLEN + INET_ADDRSTRLEN];
1308     DWORD len;
1309     int ret;
1310
1311     if (ip_addr->Address.lpSockaddr->sa_family == AF_INET ||
1312             ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1313         len = sizeof(addr_str);
1314         ret = WSAAddressToString(ip_addr->Address.lpSockaddr,
1315                                  ip_addr->Address.iSockaddrLength,
1316                                  NULL,
1317                                  addr_str,
1318                                  &len);
1319         if (ret != 0) {
1320             error_setg_win32(errp, WSAGetLastError(),
1321                 "failed address presentation form conversion");
1322             return NULL;
1323         }
1324         return g_strdup(addr_str);
1325     }
1326     return NULL;
1327 }
1328
1329 #if (_WIN32_WINNT >= 0x0600)
1330 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1331 {
1332     /* For Windows Vista/2008 and newer, use the OnLinkPrefixLength
1333      * field to obtain the prefix.
1334      */
1335     return ip_addr->OnLinkPrefixLength;
1336 }
1337 #else
1338 /* When using the Windows XP and 2003 build environment, do the best we can to
1339  * figure out the prefix.
1340  */
1341 static IP_ADAPTER_INFO *guest_get_adapters_info(void)
1342 {
1343     IP_ADAPTER_INFO *adptr_info = NULL;
1344     ULONG adptr_info_len = 0;
1345     DWORD ret;
1346
1347     /* Call the first time to get the adptr_info_len. */
1348     GetAdaptersInfo(adptr_info, &adptr_info_len);
1349
1350     adptr_info = g_malloc(adptr_info_len);
1351     ret = GetAdaptersInfo(adptr_info, &adptr_info_len);
1352     if (ret != ERROR_SUCCESS) {
1353         g_free(adptr_info);
1354         adptr_info = NULL;
1355     }
1356     return adptr_info;
1357 }
1358
1359 static int64_t guest_ip_prefix(IP_ADAPTER_UNICAST_ADDRESS *ip_addr)
1360 {
1361     int64_t prefix = -1; /* Use for AF_INET6 and unknown/undetermined values. */
1362     IP_ADAPTER_INFO *adptr_info, *info;
1363     IP_ADDR_STRING *ip;
1364     struct in_addr *p;
1365
1366     if (ip_addr->Address.lpSockaddr->sa_family != AF_INET) {
1367         return prefix;
1368     }
1369     adptr_info = guest_get_adapters_info();
1370     if (adptr_info == NULL) {
1371         return prefix;
1372     }
1373
1374     /* Match up the passed in ip_addr with one found in adaptr_info.
1375      * The matching one in adptr_info will have the netmask.
1376      */
1377     p = &((struct sockaddr_in *)ip_addr->Address.lpSockaddr)->sin_addr;
1378     for (info = adptr_info; info; info = info->Next) {
1379         for (ip = &info->IpAddressList; ip; ip = ip->Next) {
1380             if (p->S_un.S_addr == inet_addr(ip->IpAddress.String)) {
1381                 prefix = ctpop32(inet_addr(ip->IpMask.String));
1382                 goto out;
1383             }
1384         }
1385     }
1386 out:
1387     g_free(adptr_info);
1388     return prefix;
1389 }
1390 #endif
1391
1392 #define INTERFACE_PATH_BUF_SZ 512
1393
1394 static DWORD get_interface_index(const char *guid)
1395 {
1396     ULONG index;
1397     DWORD status;
1398     wchar_t wbuf[INTERFACE_PATH_BUF_SZ];
1399     snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid);
1400     wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0;
1401     status = GetAdapterIndex (wbuf, &index);
1402     if (status != NO_ERROR) {
1403         return (DWORD)~0;
1404     } else {
1405         return index;
1406     }
1407 }
1408
1409 typedef NETIOAPI_API (WINAPI *GetIfEntry2Func)(PMIB_IF_ROW2 Row);
1410
1411 static int guest_get_network_stats(const char *name,
1412                                    GuestNetworkInterfaceStat *stats)
1413 {
1414     OSVERSIONINFO os_ver;
1415
1416     os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1417     GetVersionEx(&os_ver);
1418     if (os_ver.dwMajorVersion >= 6) {
1419         MIB_IF_ROW2 a_mid_ifrow;
1420         GetIfEntry2Func getifentry2_ex;
1421         DWORD if_index = 0;
1422         HMODULE module = GetModuleHandle("iphlpapi");
1423         PVOID func = GetProcAddress(module, "GetIfEntry2");
1424
1425         if (func == NULL) {
1426             return -1;
1427         }
1428
1429         getifentry2_ex = (GetIfEntry2Func)func;
1430         if_index = get_interface_index(name);
1431         if (if_index == (DWORD)~0) {
1432             return -1;
1433         }
1434
1435         memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow));
1436         a_mid_ifrow.InterfaceIndex = if_index;
1437         if (NO_ERROR == getifentry2_ex(&a_mid_ifrow)) {
1438             stats->rx_bytes = a_mid_ifrow.InOctets;
1439             stats->rx_packets = a_mid_ifrow.InUcastPkts;
1440             stats->rx_errs = a_mid_ifrow.InErrors;
1441             stats->rx_dropped = a_mid_ifrow.InDiscards;
1442             stats->tx_bytes = a_mid_ifrow.OutOctets;
1443             stats->tx_packets = a_mid_ifrow.OutUcastPkts;
1444             stats->tx_errs = a_mid_ifrow.OutErrors;
1445             stats->tx_dropped = a_mid_ifrow.OutDiscards;
1446             return 0;
1447         }
1448     }
1449     return -1;
1450 }
1451
1452 GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
1453 {
1454     IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
1455     IP_ADAPTER_UNICAST_ADDRESS *ip_addr = NULL;
1456     GuestNetworkInterfaceList *head = NULL, *cur_item = NULL;
1457     GuestIpAddressList *head_addr, *cur_addr;
1458     GuestNetworkInterfaceList *info;
1459     GuestNetworkInterfaceStat *interface_stat = NULL;
1460     GuestIpAddressList *address_item = NULL;
1461     unsigned char *mac_addr;
1462     char *addr_str;
1463     WORD wsa_version;
1464     WSADATA wsa_data;
1465     int ret;
1466
1467     adptr_addrs = guest_get_adapters_addresses(errp);
1468     if (adptr_addrs == NULL) {
1469         return NULL;
1470     }
1471
1472     /* Make WSA APIs available. */
1473     wsa_version = MAKEWORD(2, 2);
1474     ret = WSAStartup(wsa_version, &wsa_data);
1475     if (ret != 0) {
1476         error_setg_win32(errp, ret, "failed socket startup");
1477         goto out;
1478     }
1479
1480     for (addr = adptr_addrs; addr; addr = addr->Next) {
1481         info = g_malloc0(sizeof(*info));
1482
1483         if (cur_item == NULL) {
1484             head = cur_item = info;
1485         } else {
1486             cur_item->next = info;
1487             cur_item = info;
1488         }
1489
1490         info->value = g_malloc0(sizeof(*info->value));
1491         info->value->name = guest_wctomb_dup(addr->FriendlyName);
1492
1493         if (addr->PhysicalAddressLength != 0) {
1494             mac_addr = addr->PhysicalAddress;
1495
1496             info->value->hardware_address =
1497                 g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x",
1498                                 (int) mac_addr[0], (int) mac_addr[1],
1499                                 (int) mac_addr[2], (int) mac_addr[3],
1500                                 (int) mac_addr[4], (int) mac_addr[5]);
1501
1502             info->value->has_hardware_address = true;
1503         }
1504
1505         head_addr = NULL;
1506         cur_addr = NULL;
1507         for (ip_addr = addr->FirstUnicastAddress;
1508                 ip_addr;
1509                 ip_addr = ip_addr->Next) {
1510             addr_str = guest_addr_to_str(ip_addr, errp);
1511             if (addr_str == NULL) {
1512                 continue;
1513             }
1514
1515             address_item = g_malloc0(sizeof(*address_item));
1516
1517             if (!cur_addr) {
1518                 head_addr = cur_addr = address_item;
1519             } else {
1520                 cur_addr->next = address_item;
1521                 cur_addr = address_item;
1522             }
1523
1524             address_item->value = g_malloc0(sizeof(*address_item->value));
1525             address_item->value->ip_address = addr_str;
1526             address_item->value->prefix = guest_ip_prefix(ip_addr);
1527             if (ip_addr->Address.lpSockaddr->sa_family == AF_INET) {
1528                 address_item->value->ip_address_type =
1529                     GUEST_IP_ADDRESS_TYPE_IPV4;
1530             } else if (ip_addr->Address.lpSockaddr->sa_family == AF_INET6) {
1531                 address_item->value->ip_address_type =
1532                     GUEST_IP_ADDRESS_TYPE_IPV6;
1533             }
1534         }
1535         if (head_addr) {
1536             info->value->has_ip_addresses = true;
1537             info->value->ip_addresses = head_addr;
1538         }
1539         if (!info->value->has_statistics) {
1540             interface_stat = g_malloc0(sizeof(*interface_stat));
1541             if (guest_get_network_stats(addr->AdapterName,
1542                 interface_stat) == -1) {
1543                 info->value->has_statistics = false;
1544                 g_free(interface_stat);
1545             } else {
1546                 info->value->statistics = interface_stat;
1547                 info->value->has_statistics = true;
1548             }
1549         }
1550     }
1551     WSACleanup();
1552 out:
1553     g_free(adptr_addrs);
1554     return head;
1555 }
1556
1557 int64_t qmp_guest_get_time(Error **errp)
1558 {
1559     SYSTEMTIME ts = {0};
1560     FILETIME tf;
1561
1562     GetSystemTime(&ts);
1563     if (ts.wYear < 1601 || ts.wYear > 30827) {
1564         error_setg(errp, "Failed to get time");
1565         return -1;
1566     }
1567
1568     if (!SystemTimeToFileTime(&ts, &tf)) {
1569         error_setg(errp, "Failed to convert system time: %d", (int)GetLastError());
1570         return -1;
1571     }
1572
1573     return ((((int64_t)tf.dwHighDateTime << 32) | tf.dwLowDateTime)
1574                 - W32_FT_OFFSET) * 100;
1575 }
1576
1577 void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
1578 {
1579     Error *local_err = NULL;
1580     SYSTEMTIME ts;
1581     FILETIME tf;
1582     LONGLONG time;
1583
1584     if (!has_time) {
1585         /* Unfortunately, Windows libraries don't provide an easy way to access
1586          * RTC yet:
1587          *
1588          * https://msdn.microsoft.com/en-us/library/aa908981.aspx
1589          *
1590          * Instead, a workaround is to use the Windows win32tm command to
1591          * resync the time using the Windows Time service.
1592          */
1593         LPVOID msg_buffer;
1594         DWORD ret_flags;
1595
1596         HRESULT hr = system("w32tm /resync /nowait");
1597
1598         if (GetLastError() != 0) {
1599             strerror_s((LPTSTR) & msg_buffer, 0, errno);
1600             error_setg(errp, "system(...) failed: %s", (LPCTSTR)msg_buffer);
1601         } else if (hr != 0) {
1602             if (hr == HRESULT_FROM_WIN32(ERROR_SERVICE_NOT_ACTIVE)) {
1603                 error_setg(errp, "Windows Time service not running on the "
1604                                  "guest");
1605             } else {
1606                 if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
1607                                    FORMAT_MESSAGE_FROM_SYSTEM |
1608                                    FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
1609                                    (DWORD)hr, MAKELANGID(LANG_NEUTRAL,
1610                                    SUBLANG_DEFAULT), (LPTSTR) & msg_buffer, 0,
1611                                    NULL)) {
1612                     error_setg(errp, "w32tm failed with error (0x%lx), couldn'"
1613                                      "t retrieve error message", hr);
1614                 } else {
1615                     error_setg(errp, "w32tm failed with error (0x%lx): %s", hr,
1616                                (LPCTSTR)msg_buffer);
1617                     LocalFree(msg_buffer);
1618                 }
1619             }
1620         } else if (!InternetGetConnectedState(&ret_flags, 0)) {
1621             error_setg(errp, "No internet connection on guest, sync not "
1622                              "accurate");
1623         }
1624         return;
1625     }
1626
1627     /* Validate time passed by user. */
1628     if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
1629         error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
1630         return;
1631     }
1632
1633     time = time_ns / 100 + W32_FT_OFFSET;
1634
1635     tf.dwLowDateTime = (DWORD) time;
1636     tf.dwHighDateTime = (DWORD) (time >> 32);
1637
1638     if (!FileTimeToSystemTime(&tf, &ts)) {
1639         error_setg(errp, "Failed to convert system time %d",
1640                    (int)GetLastError());
1641         return;
1642     }
1643
1644     acquire_privilege(SE_SYSTEMTIME_NAME, &local_err);
1645     if (local_err) {
1646         error_propagate(errp, local_err);
1647         return;
1648     }
1649
1650     if (!SetSystemTime(&ts)) {
1651         error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
1652         return;
1653     }
1654 }
1655
1656 GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
1657 {
1658     PSYSTEM_LOGICAL_PROCESSOR_INFORMATION pslpi, ptr;
1659     DWORD length;
1660     GuestLogicalProcessorList *head, **link;
1661     Error *local_err = NULL;
1662     int64_t current;
1663
1664     ptr = pslpi = NULL;
1665     length = 0;
1666     current = 0;
1667     head = NULL;
1668     link = &head;
1669
1670     if ((GetLogicalProcessorInformation(pslpi, &length) == FALSE) &&
1671         (GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
1672         (length > sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION))) {
1673         ptr = pslpi = g_malloc0(length);
1674         if (GetLogicalProcessorInformation(pslpi, &length) == FALSE) {
1675             error_setg(&local_err, "Failed to get processor information: %d",
1676                        (int)GetLastError());
1677         }
1678     } else {
1679         error_setg(&local_err,
1680                    "Failed to get processor information buffer length: %d",
1681                    (int)GetLastError());
1682     }
1683
1684     while ((local_err == NULL) && (length > 0)) {
1685         if (pslpi->Relationship == RelationProcessorCore) {
1686             ULONG_PTR cpu_bits = pslpi->ProcessorMask;
1687
1688             while (cpu_bits > 0) {
1689                 if (!!(cpu_bits & 1)) {
1690                     GuestLogicalProcessor *vcpu;
1691                     GuestLogicalProcessorList *entry;
1692
1693                     vcpu = g_malloc0(sizeof *vcpu);
1694                     vcpu->logical_id = current++;
1695                     vcpu->online = true;
1696                     vcpu->has_can_offline = true;
1697
1698                     entry = g_malloc0(sizeof *entry);
1699                     entry->value = vcpu;
1700
1701                     *link = entry;
1702                     link = &entry->next;
1703                 }
1704                 cpu_bits >>= 1;
1705             }
1706         }
1707         length -= sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
1708         pslpi++; /* next entry */
1709     }
1710
1711     g_free(ptr);
1712
1713     if (local_err == NULL) {
1714         if (head != NULL) {
1715             return head;
1716         }
1717         /* there's no guest with zero VCPUs */
1718         error_setg(&local_err, "Guest reported zero VCPUs");
1719     }
1720
1721     qapi_free_GuestLogicalProcessorList(head);
1722     error_propagate(errp, local_err);
1723     return NULL;
1724 }
1725
1726 int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp)
1727 {
1728     error_setg(errp, QERR_UNSUPPORTED);
1729     return -1;
1730 }
1731
1732 static gchar *
1733 get_net_error_message(gint error)
1734 {
1735     HMODULE module = NULL;
1736     gchar *retval = NULL;
1737     wchar_t *msg = NULL;
1738     int flags;
1739     size_t nchars;
1740
1741     flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
1742         FORMAT_MESSAGE_IGNORE_INSERTS |
1743         FORMAT_MESSAGE_FROM_SYSTEM;
1744
1745     if (error >= NERR_BASE && error <= MAX_NERR) {
1746         module = LoadLibraryExW(L"netmsg.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
1747
1748         if (module != NULL) {
1749             flags |= FORMAT_MESSAGE_FROM_HMODULE;
1750         }
1751     }
1752
1753     FormatMessageW(flags, module, error, 0, (LPWSTR)&msg, 0, NULL);
1754
1755     if (msg != NULL) {
1756         nchars = wcslen(msg);
1757
1758         if (nchars >= 2 &&
1759             msg[nchars - 1] == L'\n' &&
1760             msg[nchars - 2] == L'\r') {
1761             msg[nchars - 2] = L'\0';
1762         }
1763
1764         retval = g_utf16_to_utf8(msg, -1, NULL, NULL, NULL);
1765
1766         LocalFree(msg);
1767     }
1768
1769     if (module != NULL) {
1770         FreeLibrary(module);
1771     }
1772
1773     return retval;
1774 }
1775
1776 void qmp_guest_set_user_password(const char *username,
1777                                  const char *password,
1778                                  bool crypted,
1779                                  Error **errp)
1780 {
1781     NET_API_STATUS nas;
1782     char *rawpasswddata = NULL;
1783     size_t rawpasswdlen;
1784     wchar_t *user = NULL, *wpass = NULL;
1785     USER_INFO_1003 pi1003 = { 0, };
1786     GError *gerr = NULL;
1787
1788     if (crypted) {
1789         error_setg(errp, QERR_UNSUPPORTED);
1790         return;
1791     }
1792
1793     rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
1794     if (!rawpasswddata) {
1795         return;
1796     }
1797     rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
1798     rawpasswddata[rawpasswdlen] = '\0';
1799
1800     user = g_utf8_to_utf16(username, -1, NULL, NULL, &gerr);
1801     if (!user) {
1802         goto done;
1803     }
1804
1805     wpass = g_utf8_to_utf16(rawpasswddata, -1, NULL, NULL, &gerr);
1806     if (!wpass) {
1807         goto done;
1808     }
1809
1810     pi1003.usri1003_password = wpass;
1811     nas = NetUserSetInfo(NULL, user,
1812                          1003, (LPBYTE)&pi1003,
1813                          NULL);
1814
1815     if (nas != NERR_Success) {
1816         gchar *msg = get_net_error_message(nas);
1817         error_setg(errp, "failed to set password: %s", msg);
1818         g_free(msg);
1819     }
1820
1821 done:
1822     if (gerr) {
1823         error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
1824         g_error_free(gerr);
1825     }
1826     g_free(user);
1827     g_free(wpass);
1828     g_free(rawpasswddata);
1829 }
1830
1831 GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
1832 {
1833     error_setg(errp, QERR_UNSUPPORTED);
1834     return NULL;
1835 }
1836
1837 GuestMemoryBlockResponseList *
1838 qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
1839 {
1840     error_setg(errp, QERR_UNSUPPORTED);
1841     return NULL;
1842 }
1843
1844 GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp)
1845 {
1846     error_setg(errp, QERR_UNSUPPORTED);
1847     return NULL;
1848 }
1849
1850 /* add unsupported commands to the blacklist */
1851 GList *ga_command_blacklist_init(GList *blacklist)
1852 {
1853     const char *list_unsupported[] = {
1854         "guest-suspend-hybrid",
1855         "guest-set-vcpus",
1856         "guest-get-memory-blocks", "guest-set-memory-blocks",
1857         "guest-get-memory-block-size",
1858         NULL};
1859     char **p = (char **)list_unsupported;
1860
1861     while (*p) {
1862         blacklist = g_list_append(blacklist, g_strdup(*p++));
1863     }
1864
1865     if (!vss_init(true)) {
1866         g_debug("vss_init failed, vss commands are going to be disabled");
1867         const char *list[] = {
1868             "guest-get-fsinfo", "guest-fsfreeze-status",
1869             "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL};
1870         p = (char **)list;
1871
1872         while (*p) {
1873             blacklist = g_list_append(blacklist, g_strdup(*p++));
1874         }
1875     }
1876
1877     return blacklist;
1878 }
1879
1880 /* register init/cleanup routines for stateful command groups */
1881 void ga_command_state_init(GAState *s, GACommandState *cs)
1882 {
1883     if (!vss_initialized()) {
1884         ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
1885     }
1886 }
1887
1888 /* MINGW is missing two fields: IncomingFrames & OutgoingFrames */
1889 typedef struct _GA_WTSINFOA {
1890     WTS_CONNECTSTATE_CLASS State;
1891     DWORD SessionId;
1892     DWORD IncomingBytes;
1893     DWORD OutgoingBytes;
1894     DWORD IncomingFrames;
1895     DWORD OutgoingFrames;
1896     DWORD IncomingCompressedBytes;
1897     DWORD OutgoingCompressedBy;
1898     CHAR WinStationName[WINSTATIONNAME_LENGTH];
1899     CHAR Domain[DOMAIN_LENGTH];
1900     CHAR UserName[USERNAME_LENGTH + 1];
1901     LARGE_INTEGER ConnectTime;
1902     LARGE_INTEGER DisconnectTime;
1903     LARGE_INTEGER LastInputTime;
1904     LARGE_INTEGER LogonTime;
1905     LARGE_INTEGER CurrentTime;
1906
1907 } GA_WTSINFOA;
1908
1909 GuestUserList *qmp_guest_get_users(Error **err)
1910 {
1911 #if (_WIN32_WINNT >= 0x0600)
1912 #define QGA_NANOSECONDS 10000000
1913
1914     GHashTable *cache = NULL;
1915     GuestUserList *head = NULL, *cur_item = NULL;
1916
1917     DWORD buffer_size = 0, count = 0, i = 0;
1918     GA_WTSINFOA *info = NULL;
1919     WTS_SESSION_INFOA *entries = NULL;
1920     GuestUserList *item = NULL;
1921     GuestUser *user = NULL;
1922     gpointer value = NULL;
1923     INT64 login = 0;
1924     double login_time = 0;
1925
1926     cache = g_hash_table_new(g_str_hash, g_str_equal);
1927
1928     if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) {
1929         for (i = 0; i < count; ++i) {
1930             buffer_size = 0;
1931             info = NULL;
1932             if (WTSQuerySessionInformationA(
1933                 NULL,
1934                 entries[i].SessionId,
1935                 WTSSessionInfo,
1936                 (LPSTR *)&info,
1937                 &buffer_size
1938             )) {
1939
1940                 if (strlen(info->UserName) == 0) {
1941                     WTSFreeMemory(info);
1942                     continue;
1943                 }
1944
1945                 login = info->LogonTime.QuadPart;
1946                 login -= W32_FT_OFFSET;
1947                 login_time = ((double)login) / QGA_NANOSECONDS;
1948
1949                 if (g_hash_table_contains(cache, info->UserName)) {
1950                     value = g_hash_table_lookup(cache, info->UserName);
1951                     user = (GuestUser *)value;
1952                     if (user->login_time > login_time) {
1953                         user->login_time = login_time;
1954                     }
1955                 } else {
1956                     item = g_new0(GuestUserList, 1);
1957                     item->value = g_new0(GuestUser, 1);
1958
1959                     item->value->user = g_strdup(info->UserName);
1960                     item->value->domain = g_strdup(info->Domain);
1961                     item->value->has_domain = true;
1962
1963                     item->value->login_time = login_time;
1964
1965                     g_hash_table_add(cache, item->value->user);
1966
1967                     if (!cur_item) {
1968                         head = cur_item = item;
1969                     } else {
1970                         cur_item->next = item;
1971                         cur_item = item;
1972                     }
1973                 }
1974             }
1975             WTSFreeMemory(info);
1976         }
1977         WTSFreeMemory(entries);
1978     }
1979     g_hash_table_destroy(cache);
1980     return head;
1981 #else
1982     error_setg(err, QERR_UNSUPPORTED);
1983     return NULL;
1984 #endif
1985 }
1986
1987 typedef struct _ga_matrix_lookup_t {
1988     int major;
1989     int minor;
1990     char const *version;
1991     char const *version_id;
1992 } ga_matrix_lookup_t;
1993
1994 static ga_matrix_lookup_t const WIN_VERSION_MATRIX[2][8] = {
1995     {
1996         /* Desktop editions */
1997         { 5, 0, "Microsoft Windows 2000",   "2000"},
1998         { 5, 1, "Microsoft Windows XP",     "xp"},
1999         { 6, 0, "Microsoft Windows Vista",  "vista"},
2000         { 6, 1, "Microsoft Windows 7"       "7"},
2001         { 6, 2, "Microsoft Windows 8",      "8"},
2002         { 6, 3, "Microsoft Windows 8.1",    "8.1"},
2003         {10, 0, "Microsoft Windows 10",     "10"},
2004         { 0, 0, 0}
2005     },{
2006         /* Server editions */
2007         { 5, 2, "Microsoft Windows Server 2003",        "2003"},
2008         { 6, 0, "Microsoft Windows Server 2008",        "2008"},
2009         { 6, 1, "Microsoft Windows Server 2008 R2",     "2008r2"},
2010         { 6, 2, "Microsoft Windows Server 2012",        "2012"},
2011         { 6, 3, "Microsoft Windows Server 2012 R2",     "2012r2"},
2012         {10, 0, "Microsoft Windows Server 2016",        "2016"},
2013         { 0, 0, 0},
2014         { 0, 0, 0}
2015     }
2016 };
2017
2018 static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp)
2019 {
2020     typedef NTSTATUS(WINAPI * rtl_get_version_t)(
2021         RTL_OSVERSIONINFOEXW *os_version_info_ex);
2022
2023     info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
2024
2025     HMODULE module = GetModuleHandle("ntdll");
2026     PVOID fun = GetProcAddress(module, "RtlGetVersion");
2027     if (fun == NULL) {
2028         error_setg(errp, QERR_QGA_COMMAND_FAILED,
2029             "Failed to get address of RtlGetVersion");
2030         return;
2031     }
2032
2033     rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun;
2034     rtl_get_version(info);
2035     return;
2036 }
2037
2038 static char *ga_get_win_name(OSVERSIONINFOEXW const *os_version, bool id)
2039 {
2040     DWORD major = os_version->dwMajorVersion;
2041     DWORD minor = os_version->dwMinorVersion;
2042     int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION);
2043     ga_matrix_lookup_t const *table = WIN_VERSION_MATRIX[tbl_idx];
2044     while (table->version != NULL) {
2045         if (major == table->major && minor == table->minor) {
2046             if (id) {
2047                 return g_strdup(table->version_id);
2048             } else {
2049                 return g_strdup(table->version);
2050             }
2051         }
2052         ++table;
2053     }
2054     slog("failed to lookup Windows version: major=%lu, minor=%lu",
2055         major, minor);
2056     return g_strdup("N/A");
2057 }
2058
2059 static char *ga_get_win_product_name(Error **errp)
2060 {
2061     HKEY key = NULL;
2062     DWORD size = 128;
2063     char *result = g_malloc0(size);
2064     LONG err = ERROR_SUCCESS;
2065
2066     err = RegOpenKeyA(HKEY_LOCAL_MACHINE,
2067                       "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",
2068                       &key);
2069     if (err != ERROR_SUCCESS) {
2070         error_setg_win32(errp, err, "failed to open registry key");
2071         goto fail;
2072     }
2073
2074     err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2075                             (LPBYTE)result, &size);
2076     if (err == ERROR_MORE_DATA) {
2077         slog("ProductName longer than expected (%lu bytes), retrying",
2078                 size);
2079         g_free(result);
2080         result = NULL;
2081         if (size > 0) {
2082             result = g_malloc0(size);
2083             err = RegQueryValueExA(key, "ProductName", NULL, NULL,
2084                                     (LPBYTE)result, &size);
2085         }
2086     }
2087     if (err != ERROR_SUCCESS) {
2088         error_setg_win32(errp, err, "failed to retrive ProductName");
2089         goto fail;
2090     }
2091
2092     return result;
2093
2094 fail:
2095     g_free(result);
2096     return NULL;
2097 }
2098
2099 static char *ga_get_current_arch(void)
2100 {
2101     SYSTEM_INFO info;
2102     GetNativeSystemInfo(&info);
2103     char *result = NULL;
2104     switch (info.wProcessorArchitecture) {
2105     case PROCESSOR_ARCHITECTURE_AMD64:
2106         result = g_strdup("x86_64");
2107         break;
2108     case PROCESSOR_ARCHITECTURE_ARM:
2109         result = g_strdup("arm");
2110         break;
2111     case PROCESSOR_ARCHITECTURE_IA64:
2112         result = g_strdup("ia64");
2113         break;
2114     case PROCESSOR_ARCHITECTURE_INTEL:
2115         result = g_strdup("x86");
2116         break;
2117     case PROCESSOR_ARCHITECTURE_UNKNOWN:
2118     default:
2119         slog("unknown processor architecture 0x%0x",
2120             info.wProcessorArchitecture);
2121         result = g_strdup("unknown");
2122         break;
2123     }
2124     return result;
2125 }
2126
2127 GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
2128 {
2129     Error *local_err = NULL;
2130     OSVERSIONINFOEXW os_version = {0};
2131     bool server;
2132     char *product_name;
2133     GuestOSInfo *info;
2134
2135     ga_get_win_version(&os_version, &local_err);
2136     if (local_err) {
2137         error_propagate(errp, local_err);
2138         return NULL;
2139     }
2140
2141     server = os_version.wProductType != VER_NT_WORKSTATION;
2142     product_name = ga_get_win_product_name(&local_err);
2143     if (product_name == NULL) {
2144         error_propagate(errp, local_err);
2145         return NULL;
2146     }
2147
2148     info = g_new0(GuestOSInfo, 1);
2149
2150     info->has_kernel_version = true;
2151     info->kernel_version = g_strdup_printf("%lu.%lu",
2152         os_version.dwMajorVersion,
2153         os_version.dwMinorVersion);
2154     info->has_kernel_release = true;
2155     info->kernel_release = g_strdup_printf("%lu",
2156         os_version.dwBuildNumber);
2157     info->has_machine = true;
2158     info->machine = ga_get_current_arch();
2159
2160     info->has_id = true;
2161     info->id = g_strdup("mswindows");
2162     info->has_name = true;
2163     info->name = g_strdup("Microsoft Windows");
2164     info->has_pretty_name = true;
2165     info->pretty_name = product_name;
2166     info->has_version = true;
2167     info->version = ga_get_win_name(&os_version, false);
2168     info->has_version_id = true;
2169     info->version_id = ga_get_win_name(&os_version, true);
2170     info->has_variant = true;
2171     info->variant = g_strdup(server ? "server" : "client");
2172     info->has_variant_id = true;
2173     info->variant_id = g_strdup(server ? "server" : "client");
2174
2175     return info;
2176 }