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qga: Add 'guest-get-users' command

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A command that will list all currently logged in users, and the time
since when they are logged in.

Examples:

virsh # qemu-agent-command F25 '{ "execute": "guest-get-users" }'
{"return":[{"login-time":1490622289.903835,"user":"root"}]}

virsh # qemu-agent-command Win2k12r2 '{ "execute": "guest-get-users" }'
{"return":[{"login-time":1490351044.670552,"domain":"LADIDA",
"user":"Administrator"}]}

Signed-off-by: Vinzenz Feenstra <vfeenstr@redhat.com>
* make g_hash_table_contains compat func inline to avoid
  unused warnings
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Vinzenz Feenstra 2017-04-19 11:26:15 +02:00 • committed by Michael Roth
parent 1dbfbc17fe
commit 161a56a906
5 changed files with 195 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

103
qga/commands-win32.c
View file

@ -11,6 +11,9 @@
* See the COPYING file in the top-level directory.
*/
#ifndef _WIN32_WINNT
# define _WIN32_WINNT 0x0600
#endif
#include "qemu/osdep.h"
#include <wtypes.h>
#include <powrprof.h>
@ -25,6 +28,7 @@
#include <initguid.h>
#endif
#include <lm.h>
#include <wtsapi32.h>
#include "qga/guest-agent-core.h"
#include "qga/vss-win32.h"
@ -1536,3 +1540,102 @@ void ga_command_state_init(GAState *s, GACommandState *cs)
ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup);
}
}
/* MINGW is missing two fields: IncomingFrames & OutgoingFrames */
typedef struct _GA_WTSINFOA {
WTS_CONNECTSTATE_CLASS State;
DWORD SessionId;
DWORD IncomingBytes;
DWORD OutgoingBytes;
DWORD IncomingFrames;
DWORD OutgoingFrames;
DWORD IncomingCompressedBytes;
DWORD OutgoingCompressedBy;
CHAR WinStationName[WINSTATIONNAME_LENGTH];
CHAR Domain[DOMAIN_LENGTH];
CHAR UserName[USERNAME_LENGTH + 1];
LARGE_INTEGER ConnectTime;
LARGE_INTEGER DisconnectTime;
LARGE_INTEGER LastInputTime;
LARGE_INTEGER LogonTime;
LARGE_INTEGER CurrentTime;
} GA_WTSINFOA;
GuestUserList *qmp_guest_get_users(Error **err)
{
#if (_WIN32_WINNT >= 0x0600)
#define QGA_NANOSECONDS 10000000
GHashTable *cache = NULL;
GuestUserList *head = NULL, *cur_item = NULL;
DWORD buffer_size = 0, count = 0, i = 0;
GA_WTSINFOA *info = NULL;
WTS_SESSION_INFOA *entries = NULL;
GuestUserList *item = NULL;
GuestUser *user = NULL;
gpointer value = NULL;
INT64 login = 0;
double login_time = 0;
cache = g_hash_table_new(g_str_hash, g_str_equal);
if (WTSEnumerateSessionsA(NULL, 0, 1, &entries, &count)) {
for (i = 0; i < count; ++i) {
buffer_size = 0;
info = NULL;
if (WTSQuerySessionInformationA(
NULL,
entries[i].SessionId,
WTSSessionInfo,
(LPSTR *)&info,
&buffer_size
)) {
if (strlen(info->UserName) == 0) {
WTSFreeMemory(info);
continue;
}
login = info->LogonTime.QuadPart;
login -= W32_FT_OFFSET;
login_time = ((double)login) / QGA_NANOSECONDS;
if (g_hash_table_contains(cache, info->UserName)) {
value = g_hash_table_lookup(cache, info->UserName);
user = (GuestUser *)value;
if (user->login_time > login_time) {
user->login_time = login_time;
}
} else {
item = g_new0(GuestUserList, 1);
item->value = g_new0(GuestUser, 1);
item->value->user = g_strdup(info->UserName);
item->value->domain = g_strdup(info->Domain);
item->value->has_domain = true;
item->value->login_time = login_time;
g_hash_table_add(cache, item->value->user);
if (!cur_item) {
head = cur_item = item;
} else {
cur_item->next = item;
cur_item = item;
}
}
}
WTSFreeMemory(info);
}
WTSFreeMemory(entries);
}
g_hash_table_destroy(cache);
return head;
#else
error_setg(err, QERR_UNSUPPORTED);
return NULL;
#endif
}