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Create the named pipe with R/W access for everyone. This enables VMware running without administrative privileges to connect to the service.

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svn path=/trunk/tools/vmwaregateway/; revision=271
This commit is contained in:
Thomas Bluemel 2007-06-29 21:43:18 +00:00
parent a4b6633b0d
commit 00a6573a32
1 changed files with 158 additions and 1 deletions
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159
vmwaregateway.cpp
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@ -36,11 +36,160 @@ const char* errServerBusy = "Server is currently connected\n";
// verbose output - traces a lot
BOOL verbose = FALSE;
PSECURITY_DESCRIPTOR
CreateVmwareGatewaySD(VOID)
{
static SID_IDENTIFIER_AUTHORITY LocalSystemAuthority = {SECURITY_NT_AUTHORITY};
static SID_IDENTIFIER_AUTHORITY WorldAuthority = {SECURITY_WORLD_SID_AUTHORITY};
PSID LocalSystemSid = NULL;
PSID AdministratorsSid = NULL;
PSID EveryoneSid = NULL;
PACL Dacl;
DWORD DaclSize;
PSECURITY_DESCRIPTOR pSD = NULL;
/* create the SYSTEM, Administrators and Everyone SIDs */
if (!AllocateAndInitializeSid(&LocalSystemAuthority,
1,
SECURITY_LOCAL_SYSTEM_RID,
0,
0,
0,
0,
0,
0,
0,
&LocalSystemSid) ||
!AllocateAndInitializeSid(&LocalSystemAuthority,
2,
SECURITY_BUILTIN_DOMAIN_RID,
DOMAIN_ALIAS_RID_ADMINS,
0,
0,
0,
0,
0,
0,
&AdministratorsSid) ||
!AllocateAndInitializeSid(&WorldAuthority,
1,
SECURITY_WORLD_RID,
0,
0,
0,
0,
0,
0,
0,
&EveryoneSid))
{
printf("Failed initializing the SIDs for the default security descriptor (0x%p, 0x%p, 0x%p)\n",
LocalSystemSid, AdministratorsSid, EveryoneSid);
goto Cleanup;
}
/* allocate the security descriptor and DACL */
DaclSize = sizeof(ACL) +
((GetLengthSid(LocalSystemSid) +
GetLengthSid(AdministratorsSid) +
GetLengthSid(EveryoneSid)) +
(3 * FIELD_OFFSET(ACCESS_ALLOWED_ACE,
SidStart)));
pSD = (PSECURITY_DESCRIPTOR)LocalAlloc(LMEM_FIXED,
(SIZE_T)DaclSize + sizeof(SECURITY_DESCRIPTOR));
if (pSD == NULL)
{
printf("Failed to allocate the default security descriptor and ACL\n");
goto Cleanup;
}
if (!InitializeSecurityDescriptor(pSD,
SECURITY_DESCRIPTOR_REVISION))
{
printf("Failed to initialize the default security descriptor\n");
goto Cleanup;
}
/* initialize and build the DACL */
Dacl = (PACL)((ULONG_PTR)pSD + sizeof(SECURITY_DESCRIPTOR));
if (!InitializeAcl(Dacl,
(DWORD)DaclSize,
ACL_REVISION))
{
printf("Failed to initialize the DACL of the default security descriptor\n");
goto Cleanup;
}
/* add the SYSTEM Ace */
if (!AddAccessAllowedAce(Dacl,
ACL_REVISION,
FILE_GENERIC_READ | FILE_GENERIC_WRITE | FILE_GENERIC_EXECUTE,
LocalSystemSid))
{
printf("Failed to add the SYSTEM ACE\n");
goto Cleanup;
}
/* add the Administrators Ace */
if (!AddAccessAllowedAce(Dacl,
ACL_REVISION,
FILE_GENERIC_READ | FILE_GENERIC_WRITE | FILE_GENERIC_EXECUTE,
AdministratorsSid))
{
printf("Failed to add the Administrators ACE\n");
goto Cleanup;
}
/* add the Everyone Ace */
if (!AddAccessAllowedAce(Dacl,
ACL_REVISION,
FILE_GENERIC_READ | FILE_GENERIC_WRITE | FILE_GENERIC_EXECUTE,
EveryoneSid))
{
printf("Failed to add the Everyone ACE\n");
goto Cleanup;
}
/* set the DACL */
if (!SetSecurityDescriptorDacl(pSD,
TRUE,
Dacl,
FALSE))
{
printf("Failed to set the DACL of the default security descriptor\n");
Cleanup:
if (pSD != NULL)
{
LocalFree((HLOCAL)pSD);
pSD = NULL;
}
}
if (LocalSystemSid != NULL)
{
FreeSid(LocalSystemSid);
}
if (AdministratorsSid != NULL)
{
FreeSid(AdministratorsSid);
}
if (EveryoneSid != NULL)
{
FreeSid(EveryoneSid);
}
return pSD;
}
// the central server loop
void Server()
{
WORD wVersionRequested;
WSADATA wsaData;
PSECURITY_DESCRIPTOR sd;
SECURITY_ATTRIBUTES sa;
wVersionRequested = MAKEWORD( 2, 2 );
// socket and pipe handles
@ -69,6 +218,12 @@ void Server()
return;
}
// create a suitable security descriptor
sd = CreateVmwareGatewaySD();
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = sd;
sa.bInheritHandle = FALSE;
// first create the named pipe
pipe = CreateNamedPipe(PIPE_NAME,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
@ -77,7 +232,9 @@ void Server()
100,
100,
NMPWAIT_WAIT_FOREVER,
NULL);
&sa);
if (sd != NULL)
LocalFree((HLOCAL)sd);
if (pipe == INVALID_HANDLE_VALUE) {
printf("Could not create named pipe (%d)\n", GetLastError());