sun-src/tsol/tsolextension.c

	tsolextension.c revision 1209
8N/A/*
8N/A * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
98N/A *
8N/A * Permission is hereby granted, free of charge, to any person obtaining a
8N/A * copy of this software and associated documentation files (the "Software"),
8N/A * to deal in the Software without restriction, including without limitation
8N/A * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8N/A * and/or sell copies of the Software, and to permit persons to whom the
8N/A * Software is furnished to do so, subject to the following conditions:
8N/A *
8N/A * The above copyright notice and this permission notice (including the next
8N/A * paragraph) shall be included in all copies or substantial portions of the
8N/A * Software.
8N/A *
8N/A * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
8N/A * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
8N/A * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
8N/A * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
8N/A * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
8N/A * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
8N/A * DEALINGS IN THE SOFTWARE.
8N/A */
8N/A
8N/A
8N/A#include <stdio.h>
8N/A#include "auditwrite.h"
8N/A#include <bsm/libbsm.h>
8N/A#include <bsm/audit_uevents.h>
8N/A#include <sys/param.h>
8N/A#include <sys/types.h>
258N/A#include <sys/socket.h>
8N/A#include <sys/wait.h>
8N/A#include <ucred.h>
8N/A#include <netinet/in.h>
253N/A#include <netdb.h>
253N/A#include <arpa/inet.h>
253N/A#include <sys/tsol/tndb.h>
253N/A#include <strings.h>
253N/A#include <string.h>
253N/A#include <pwd.h>
258N/A#include <unistd.h>
98N/A#include <sys/stat.h>
156N/A#include <rpc/rpc.h>
98N/A#include <zone.h>
156N/A
98N/A#ifdef HAVE_DIX_CONFIG_H
98N/A#include <dix-config.h>
156N/A#endif
156N/A
8N/A#include "misc.h"
8N/A#include "osdep.h"
8N/A#include <X11/Xauth.h>
8N/A#include "tsol.h"
8N/A#include "inputstr.h"
8N/A#include "extnsionst.h"
8N/A#include "dixstruct.h"
8N/A#include "xace.h"
8N/A#include "xacestr.h"
8N/A#ifdef PANORAMIX
8N/A#include "../Xext/panoramiXsrv.h"
8N/A#endif
8N/A#ifdef XCSECURITY
8N/A#include <X11/extensions/secur.h>
8N/A#include "../Xext/securitysrv.h"
8N/A#endif
8N/A#include "tsolpolicy.h"
8N/A
8N/A#define  BadCmapCookie      0
8N/A#define  Tsolextension      0x0080    /* Tsol extensions begin at 128 */
8N/A#define  MAX_SCREENS        3         /* screens allowed */
8N/A#define EXTNSIZE 128
8N/A
#define SECURE_RPC_AUTH "SUN-DES-1"
#define SECURE_RPC_LEN  9

static int ProcTsolDispatch(ClientPtr);
static int ProcSetPolyInstInfo(ClientPtr);
static int ProcSetPropLabel(ClientPtr);
static int ProcSetPropUID(ClientPtr);
static int ProcSetResLabel(ClientPtr);
static int ProcSetResUID(ClientPtr);
static int ProcGetClientAttributes(ClientPtr);
static int ProcGetClientLabel(ClientPtr);
static int ProcGetPropAttributes(ClientPtr);
static int ProcGetResAttributes(ClientPtr);
static int ProcMakeTPWindow(ClientPtr);
static int ProcMakeTrustedWindow(ClientPtr);
static int ProcMakeUntrustedWindow(ClientPtr);

static int SProcTsolDispatch(ClientPtr);
static int SProcSetPolyInstInfo(ClientPtr);
static int SProcSetPropLabel(ClientPtr);
static int SProcSetPropUID(ClientPtr);
static int SProcSetResLabel(ClientPtr);
static int SProcSetResUID(ClientPtr);
static int SProcGetClientAttributes(ClientPtr);
static int SProcGetClientLabel(ClientPtr);
static int SProcGetPropAttributes(ClientPtr);
static int SProcGetResAttributes(ClientPtr);
static int SProcMakeTPWindow(ClientPtr);
static int SProcMakeTrustedWindow(ClientPtr);
static int SProcMakeUntrustedWindow(ClientPtr);

static void TsolReset(ExtensionEntry *extension);
static void BreakAllGrabs(ClientPtr client);

static unsigned char TsolReqCode = 0;
static int tsolEventBase = -1;
static int ScreenStripeHeight[MAX_SCREENS] = {0, 0};

int tsolMultiLevel = TRUE;
int tsol_mac_enabled;

static int OwnerUIDint;
static Selection *tsol_sel_agnt = NULL; /* entry in CurrentSelection to get seln */
static Atom tsol_atom_sel_agnt = 0; /* selection agent atom created during init */

/*
 * Key to lookup devPrivate data in various structures
 */
DevPrivateKeyRec tsolClientPrivateKeyRec;
DevPrivateKeyRec tsolPixmapPrivateKeyRec;
DevPrivateKeyRec tsolWindowPrivateKeyRec;
DevPrivateKeyRec tsolPropertyPrivateKeyRec;
DevPrivateKeyRec tsolSelectionPrivateKeyRec;
DevPrivateKeyRec tsolDevicePrivateKeyRec;


int (*TsolSavedProcVector[PROCVECTORSIZE])(ClientPtr client);
int (*TsolSavedSwappedProcVector[PROCVECTORSIZE])(ClientPtr client);

static SecurityHook tsolSecHook;

static XID TsolCheckAuthorization (unsigned int name_length,
    char *name, unsigned int data_length,
    char *data, ClientPtr client, char **reason);

static void TsolSetClientInfo(ClientPtr client);

/* XACE hook callbacks */
static CALLBACK(TsolCheckExtensionAccess);
static CALLBACK(TsolCheckPropertyAccess);
static CALLBACK(TsolCheckResourceIDAccess);
static CALLBACK(TsolCheckSendAccess);
static CALLBACK(TsolCheckReceiveAccess);
static CALLBACK(TsolCheckSelectionAccess);
static CALLBACK(TsolProcessKeyboard);
CALLBACK(TsolCheckDeviceAccess);
CALLBACK(TsolCheckServerAccess);
CALLBACK(TsolCheckClientAccess);

/* other callbacks */
static CALLBACK(TsolClientStateCallback);
static CALLBACK(TsolSelectionCallback);

extern int tsol_check_policy(TsolInfoPtr tsolinfo, TsolResPtr tsolres,
    xpolicy_t flags, int reqcode);
extern void TsolCheckDrawableAccess(CallbackListPtr *pcbl, pointer nulldata,
    pointer calldata);
extern void TsolCheckXIDAccess(CallbackListPtr *pcbl, pointer nulldata,
    pointer calldata);
extern Bool client_has_privilege(TsolInfoPtr tsolinfo, priv_set_t *priv);

extern priv_set_t *pset_win_mac_write;
extern priv_set_t *pset_win_dac_write;
extern priv_set_t *pset_win_config;

extern RESTYPE RREventType;

/*
 * Initialize the extension. Main entry point for this loadable
 * module.
 */

_X_EXPORT void
TsolExtensionInit(void)
{
    ExtensionEntry *extEntry;
    int i;

    /* sleep(20); */

    /* MAC/Label support is available only if labeld svc is enabled */
    if (is_system_labeled()) {
        tsol_mac_enabled = TRUE;
    } else {
        /* DAC support can be added in future */
        tsol_mac_enabled = FALSE;
        return;
    }

    tsolMultiLevel = TRUE;
    (void) setpflags(PRIV_AWARE, 1);

    init_xtsol();
    init_win_privsets();

    extEntry = AddExtension(TSOLNAME, TSOL_NUM_EVENTS, TSOL_NUM_ERRORS,
        ProcTsolDispatch, SProcTsolDispatch, TsolReset,
        StandardMinorOpcode);

    if (extEntry == NULL) {
        ErrorF("TsolExtensionInit: AddExtension failed for X Trusted Extensions\n");
        return;
    }

        TsolReqCode = (unsigned char) extEntry->base;
        tsolEventBase = extEntry->eventBase;

    if (!AddCallback(&ClientStateCallback, TsolClientStateCallback, NULL))
        return;

    if (!AddCallback(&SelectionCallback, TsolSelectionCallback, NULL))
        return;

    /* Allocate storage in devPrivates */
    if (!dixRegisterPrivateKey(tsolClientPrivateKey, PRIVATE_CLIENT,
                   sizeof (TsolInfoRec))) {
        ErrorF("TsolExtensionInit: Cannot allocate client private.\n");
        return;
    }

    if (!dixRegisterPrivateKey(tsolPixmapPrivateKey, PRIVATE_PIXMAP,
                   sizeof (TsolResRec))) {
        ErrorF("TsolExtensionInit: Cannot allocate pixmap private.\n");
        return;
    }

    if (!dixRegisterPrivateKey(tsolWindowPrivateKey, PRIVATE_WINDOW,
                   sizeof (TsolResRec))) {
        ErrorF("TsolExtensionInit: Cannot allocate window private.\n");
        return;
    }

    if (!dixRegisterPrivateKey(tsolPropertyPrivateKey, PRIVATE_PROPERTY,
                   sizeof (TsolResRec))) {
        ErrorF("TsolExtensionInit: Cannot allocate property private.\n");
        return;
    }

    if (!dixRegisterPrivateKey(tsolSelectionPrivateKey, PRIVATE_SELECTION,
                   sizeof (TsolResRec))) {
        ErrorF("TsolExtensionInit: Cannot allocate selection private.\n");
        return;
    }

    if (!dixRegisterPrivateKey(tsolDevicePrivateKey, PRIVATE_DEVICE,
                   sizeof (HotKeyRec))) {
        ErrorF("TsolExtensionInit: Cannot allocate device private.\n");
        return;
    }

    /* Initialize the client info for server itself */
        if (serverClient) {
            TsolInfoPtr tsolinfo = GetClientTsolInfo(serverClient);
        if (tsolinfo->sl == NULL) {
            tsolinfo->sl = (bslabel_t *)lookupSL_low();
            tsolinfo->uid = 0;
            tsolinfo->pid = getpid();
            snprintf(tsolinfo->pname, MAXNAME,
                 "client id %d (pid %d)",
                 serverClient->index, tsolinfo->pid);
        }
    }

    LoadTsolConfig();

    MakeTSOLAtoms();
    UpdateTsolNode(0, NULL);

    tsol_atom_sel_agnt = MakeAtom("_TSOL_SEL_AGNT", 14, 1);

    /* Initialize security hooks */
    tsolSecHook.CheckAuthorization = TsolCheckAuthorization;
    pSecHook = &tsolSecHook;

    XaceRegisterCallback(XACE_EXT_DISPATCH, TsolCheckExtensionAccess, NULL);
    XaceRegisterCallback(XACE_RESOURCE_ACCESS, TsolCheckResourceIDAccess, NULL);
    XaceRegisterCallback(XACE_PROPERTY_ACCESS, TsolCheckPropertyAccess, NULL);
    XaceRegisterCallback(XACE_SEND_ACCESS, TsolCheckSendAccess, NULL);
    XaceRegisterCallback(XACE_RECEIVE_ACCESS, TsolCheckReceiveAccess, NULL);
    XaceRegisterCallback(XACE_EXT_ACCESS, TsolCheckExtensionAccess, NULL);
    XaceRegisterCallback(XACE_DEVICE_ACCESS, TsolCheckDeviceAccess, NULL);
    XaceRegisterCallback(XACE_SCREEN_ACCESS, TsolCheckDeviceAccess, NULL);
    XaceRegisterCallback(XACE_SCREENSAVER_ACCESS, TsolCheckDeviceAccess, NULL);
    XaceRegisterCallback(XACE_SELECTION_ACCESS, TsolCheckSelectionAccess, NULL);
    XaceRegisterCallback(XACE_SERVER_ACCESS, TsolCheckServerAccess, NULL);
    XaceRegisterCallback(XACE_CLIENT_ACCESS, TsolCheckClientAccess, NULL);
    XaceRegisterCallback(XACE_KEY_AVAIL, TsolProcessKeyboard, NULL);
    XaceRegisterCallback(XACE_AUDIT_BEGIN, TsolAuditStart, NULL);
    XaceRegisterCallback(XACE_AUDIT_END, TsolAuditEnd, NULL);

    /* Save original Proc vectors */
    for (i = 0; i < PROCVECTORSIZE; i++) {
        TsolSavedProcVector[i] = ProcVector[i];
        TsolSavedSwappedProcVector[i] = SwappedProcVector[i];
    }

    ProcVector[X_InternAtom] = ProcTsolInternAtom;
    ProcVector[X_GetAtomName] = ProcTsolGetAtomName;

    ProcVector[X_CreateWindow] = ProcTsolCreateWindow;
    ProcVector[X_ChangeWindowAttributes] = ProcTsolChangeWindowAttributes;
    ProcVector[X_ConfigureWindow] = ProcTsolConfigureWindow;
    ProcVector[X_CirculateWindow] = ProcTsolCirculateWindow;
    ProcVector[X_ReparentWindow] = ProcTsolReparentWindow;
    ProcVector[X_GrabServer] = ProcTsolGrabServer;
    ProcVector[X_UngrabServer] = ProcTsolUngrabServer;
    ProcVector[X_GetImage] = ProcTsolGetImage;
    ProcVector[X_QueryTree] = ProcTsolQueryTree;
    ProcVector[X_QueryPointer] = ProcTsolQueryPointer;
    ProcVector[X_GetGeometry] = ProcTsolGetGeometry;
    ProcVector[X_CopyArea] = ProcTsolCopyArea;
    ProcVector[X_CopyPlane] = ProcTsolCopyPlane;
    ProcVector[X_PolySegment] = ProcTsolPolySegment;
    ProcVector[X_PolyRectangle] = ProcTsolPolyRectangle;

}

static CALLBACK(
    TsolCheckResourceIDAccess)
{
    XaceResourceAccessRec *rec = calldata;
    RESTYPE rtype = rec->rtype;

    switch (rtype) {
    case RT_WINDOW:
    case RT_PIXMAP:
        /* Drawables policy */
        TsolCheckDrawableAccess(pcbl, nulldata, calldata);
        break;

    case RT_GC:
    case RT_CURSOR:
    case RT_FONT:
        TsolCheckXIDAccess(pcbl, nulldata, calldata);
        break;
    default:
        /*
         * Handle other resource types.
         * In RANDR extension, usual window policy is
         * enforced before checking for RREventType.
         */
        if (rtype == RREventType) {
            rec->status = Success;
        }
        break;
    }
}

static
CALLBACK(TsolSelectionCallback)
{
    SelectionInfoRec *pselinfo = (SelectionInfoRec *)calldata;
    Selection *pSel = pselinfo->selection;
    TsolResPtr tsolseln = TsolSelectionPrivate(pSel);

    switch (pselinfo->kind) {
    case SelectionClientClose:
        if (tsol_sel_agnt && pSel->selection ==  tsol_sel_agnt->selection) {
        tsol_sel_agnt = NULL; /* selection manager died. */
        }
    /* fall through to reset the SL */

    case SelectionWindowDestroy:
        tsolseln->sl = NULL;
        break;

    default:
        /* All others handled in SelectionAccess handler */
        break;
    }
}

static
CALLBACK(TsolClientStateCallback)
{
    NewClientInfoRec *pci = (NewClientInfoRec *)calldata;
    ClientPtr client = pci->client;
    TsolInfoPtr tsolinfo = TsolClientPrivate(client);

    switch (client->clientState) {

    case ClientStateInitial:
        /* Got a new connection */
        TsolSetClientInfo(client);
        break;

    case ClientStateRunning:
        break;

    case ClientStateRetained:   /* client disconnected */
        break;
    case ClientStateGone:
        if (tpwin && wClient(tpwin) == client)
            tpwin = NULL; /* reset tpwin */

        if (tsolinfo != NULL && tsolinfo->privs != NULL) {
            priv_freeset(tsolinfo->privs);
        }
        /* Audit disconnect */
        if (system_audit_on && (au_preselect(AUE_ClientDisconnect, &(tsolinfo->amask),
                              AU_PRS_BOTH, AU_PRS_USECACHE) == 1)) {
            auditwrite(AW_PRESELECT, &(tsolinfo->amask),AW_END);
            auditwrite(AW_EVENTNUM, AUE_ClientDisconnect,
                               AW_XCLIENT, client->index,
                   AW_SLABEL, tsolinfo->sl,
                               AW_RETURN, 0, 0, AW_WRITE, AW_END);

            tsolinfo->flags &= ~TSOL_DOXAUDIT;
            tsolinfo->flags &= ~TSOL_AUDITEVENT;
            auditwrite(AW_FLUSH, AW_END);
            auditwrite(AW_DISCARDRD, tsolinfo->asaverd, AW_END);
            auditwrite(AW_NOPRESELECT, AW_END);
        }
        break;

    default:
                break;
    }

}


static void
TsolReset(ExtensionEntry *extension)
{
    free_win_privsets();
    XaceDeleteCallback(XACE_EXT_DISPATCH, TsolCheckExtensionAccess, NULL);
    XaceDeleteCallback(XACE_RESOURCE_ACCESS, TsolCheckResourceIDAccess, NULL);
    XaceDeleteCallback(XACE_PROPERTY_ACCESS, TsolCheckPropertyAccess, NULL);
    XaceDeleteCallback(XACE_SEND_ACCESS, TsolCheckSendAccess, NULL);
    XaceDeleteCallback(XACE_RECEIVE_ACCESS, TsolCheckReceiveAccess, NULL);
    XaceDeleteCallback(XACE_EXT_ACCESS, TsolCheckExtensionAccess, NULL);
    XaceDeleteCallback(XACE_DEVICE_ACCESS, TsolCheckDeviceAccess, NULL);
    XaceDeleteCallback(XACE_SCREEN_ACCESS, TsolCheckDeviceAccess, NULL);
    XaceDeleteCallback(XACE_SCREENSAVER_ACCESS, TsolCheckDeviceAccess, NULL);
    XaceDeleteCallback(XACE_SELECTION_ACCESS, TsolCheckSelectionAccess, NULL);
    XaceDeleteCallback(XACE_SERVER_ACCESS, TsolCheckServerAccess, NULL);
    XaceDeleteCallback(XACE_CLIENT_ACCESS, TsolCheckClientAccess, NULL);
    XaceDeleteCallback(XACE_KEY_AVAIL, TsolProcessKeyboard, NULL);
    XaceDeleteCallback(XACE_AUDIT_BEGIN, TsolAuditStart, NULL);
    XaceDeleteCallback(XACE_AUDIT_END, TsolAuditEnd, NULL);
}

/*
 * Dispatch routine
 *
 */
static int
ProcTsolDispatch(register ClientPtr client)
{
    int retval;

    REQUEST(xReq);

    switch (stuff->data)
    {
        case X_SetPolyInstInfo:
            retval =  ProcSetPolyInstInfo(client);
            break;
        case X_SetPropLabel:
            retval =  ProcSetPropLabel(client);
            break;
        case X_SetPropUID:
            retval =  ProcSetPropUID(client);
            break;
        case X_SetResLabel:
            retval =  ProcSetResLabel(client);
            break;
        case X_SetResUID:
            retval =  ProcSetResUID(client);
            break;
        case X_GetClientAttributes:
            retval =  ProcGetClientAttributes(client);
            break;
        case X_GetClientLabel:
            retval = ProcGetClientLabel(client);
            break;
        case X_GetPropAttributes:
            retval =  ProcGetPropAttributes(client);
            break;
        case X_GetResAttributes:
            retval =  ProcGetResAttributes(client);
            break;
        case X_MakeTPWindow:
            retval =  ProcMakeTPWindow(client);
            break;
        case X_MakeTrustedWindow:
            retval =  ProcMakeTrustedWindow(client);
            break;
        case X_MakeUntrustedWindow:
            retval =  ProcMakeUntrustedWindow(client);
            break;
        default:
            SendErrorToClient(client, TsolReqCode, stuff->data, 0, BadRequest);
            retval = BadRequest;
    }
    return (retval);
}


static int
SProcTsolDispatch(register ClientPtr client)
{
    int n;
    int retval;

    REQUEST(xReq);

    swaps(&stuff->length, n);
    switch (stuff->data)
    {
        case X_SetPolyInstInfo:
            retval =  SProcSetPolyInstInfo(client);
            break;
        case X_SetPropLabel:
            retval =  SProcSetPropLabel(client);
            break;
        case X_SetPropUID:
            retval =  SProcSetPropUID(client);
            break;
        case X_SetResLabel:
            retval =  SProcSetResLabel(client);
            break;
        case X_SetResUID:
            retval =  SProcSetResUID(client);
            break;
        case X_GetClientAttributes:
            retval =  SProcGetClientAttributes(client);
            break;
        case X_GetClientLabel:
            retval = SProcGetClientLabel(client);
            break;
        case X_GetPropAttributes:
            retval =  SProcGetPropAttributes(client);
            break;
        case X_GetResAttributes:
            retval =  SProcGetResAttributes(client);
            break;
        case X_MakeTPWindow:
            retval =  SProcMakeTPWindow(client);
            break;
        case X_MakeTrustedWindow:
            retval =  SProcMakeTrustedWindow(client);
            break;
        case X_MakeUntrustedWindow:
            retval =  SProcMakeUntrustedWindow(client);
            break;
        default:
            SendErrorToClient(client, TsolReqCode, stuff->data, 0, BadRequest);
            retval = BadRequest;
    }
    return (retval);
}


/*
 * Individual routines
 */

static int
SProcSetPolyInstInfo(ClientPtr client)
{
    int n;

    REQUEST(xSetPolyInstInfoReq);
    swapl(&stuff->uid, n);
    swapl(&stuff->enabled, n);
    swaps(&stuff->sllength, n);

    return (ProcSetPolyInstInfo(client));
}

static int
SProcSetPropLabel(ClientPtr client)
{
    int n;

    REQUEST(xSetPropLabelReq);
    swapl(&stuff->id, n);
    swapl(&stuff->atom, n);
    swaps(&stuff->labelType, n);
    swaps(&stuff->sllength, n);
    swaps(&stuff->illength, n);

    return (ProcSetPropLabel(client));
}

static int
SProcSetPropUID(ClientPtr client)
{
    int n;

    REQUEST(xSetPropUIDReq);
    swapl(&stuff->id, n);
    swapl(&stuff->atom, n);
    swapl(&stuff->uid, n);

    return (ProcSetPropUID(client));
}

static int
SProcSetResLabel(ClientPtr client)
{
    int n;

    REQUEST(xSetResLabelReq);
    swapl(&stuff->id, n);
    swaps(&stuff->resourceType, n);
    swaps(&stuff->labelType, n);
    swaps(&stuff->sllength, n);
    swaps(&stuff->illength, n);

    return (ProcSetResLabel(client));
}

static int
SProcSetResUID(ClientPtr client)
{
    int n;

    REQUEST(xSetResUIDReq);
    swapl(&stuff->id, n);
    swaps(&stuff->resourceType, n);
    swapl(&stuff->uid, n);

    return (ProcSetResUID(client));
}

static int
SProcGetClientAttributes(ClientPtr client)
{
    int n;

    REQUEST(xGetClientAttributesReq);
    swapl(&stuff->id, n);

    return (ProcGetClientAttributes(client));
}

static int
SProcGetClientLabel(ClientPtr client)
{
    int n;

    REQUEST(xGetClientLabelReq);
    swapl(&stuff->id, n);
    swaps(&stuff->mask, n);

    return (ProcGetClientLabel(client));
}

static int
SProcGetPropAttributes(ClientPtr client)
{
    int n;

    REQUEST(xGetPropAttributesReq);
    swapl(&stuff->id, n);
    swapl(&stuff->atom, n);
    swaps(&stuff->mask, n);

    return (ProcGetPropAttributes(client));
}

static int
SProcGetResAttributes(ClientPtr client)
{
    int n;

    REQUEST(xGetResAttributesReq);
    swapl(&stuff->id, n);
    swaps(&stuff->resourceType, n);
    swaps(&stuff->mask, n);

    return (ProcGetResAttributes(client));
}

static int
SProcMakeTPWindow(ClientPtr client)
{
    int n;

    REQUEST(xMakeTPWindowReq);
    swapl(&stuff->id, n);

    return (ProcMakeTPWindow(client));
}

static int
SProcMakeTrustedWindow(ClientPtr client)
{
    int n;

    REQUEST(xMakeTrustedWindowReq);
    swapl(&stuff->id, n);

    return (ProcMakeTrustedWindow(client));
}

static int
SProcMakeUntrustedWindow(ClientPtr client)
{
    int n;

    REQUEST(xMakeUntrustedWindowReq);
    swapl(&stuff->id, n);

    return (ProcMakeUntrustedWindow(client));
}

/*
 * Set PolyInstantiation Info.
 * Normally a get(prop) will
 * get the prop. that has match sl, uid of the client. Setting
 * enabled to true will get only the prop. corresponding to
 * sl, uid specified instead of that of client. This is used
 * by dtwm/dtfile in special motif lib.
 */
static int
ProcSetPolyInstInfo(ClientPtr client)
{
    TsolInfoPtr tsolinfo = GetClientTsolInfo(client);
    bslabel_t *sl;
    extern priv_set_t *pset_win_mac_write;

    REQUEST(xSetPolyInstInfoReq);
    REQUEST_AT_LEAST_SIZE(xSetPolyInstInfoReq);

     /* Requires win_mac_write privilege */
    if (!client_has_privilege(tsolinfo, pset_win_mac_write)) {
        return (BadAccess);
    }

    sl = (bslabel_t *)(stuff + 1);

    tsolpolyinstinfo.enabled = stuff->enabled;
    tsolpolyinstinfo.uid = (uid_t) stuff->uid;
    tsolpolyinstinfo.sl = lookupSL(sl);

    return (client->noClientException);
}

static int
ProcSetPropLabel(ClientPtr client)
{
    TsolInfoPtr tsolinfo = GetClientTsolInfo(client);
    bslabel_t   *sl;
    WindowPtr    pWin;
    TsolResPtr  tsolprop;
    PropertyPtr  pProp;
    int rc;

    REQUEST(xSetPropLabelReq);

    REQUEST_AT_LEAST_SIZE(xSetPropLabelReq);


    rc = dixLookupWindow(&pWin, stuff->id, client, DixWriteAccess);
    if (rc != Success)
        return rc;

    if (!pWin)
    {
        client->errorValue = stuff->id;
        return (BadWindow);
    }
    if (!ValidAtom(stuff->atom))
    {
        client->errorValue = stuff->atom;
        return (BadAtom);
    }

    /* first see if property already exists */
    pProp = wUserProps (pWin);
    while (pProp)
    {
        if (pProp->propertyName == stuff->atom)
            break;
        pProp = pProp->next;
    }

    if (!pProp)
    {
        /* property does not exist */
        client->errorValue = stuff->atom;
        return (BadAtom);
    }

     /* Requires win_mac_write privilege */
    if (!client_has_privilege(tsolinfo, pset_win_mac_write)) {
        return (BadAccess);
    }

    /* Initialize property created internally by server */
    tsolprop = TsolPropertyPrivate(pProp);

    sl = (bslabel_t *)(stuff + 1);

    if (!blequal(tsolprop->sl, sl)) {
        tsolprop->sl = lookupSL(sl);
    }

    return (client->noClientException);
}

static int
ProcSetPropUID(ClientPtr client)
{
    TsolInfoPtr tsolinfo = GetClientTsolInfo(client);
    WindowPtr   pWin;
    TsolResPtr tsolprop;
    PropertyPtr pProp;
    int     rc;

    REQUEST(xSetPropUIDReq);

    REQUEST_SIZE_MATCH(xSetPropUIDReq);

    rc = dixLookupWindow(&pWin, stuff->id, client, DixReadAccess);
    if (rc != Success)
        return rc;

    if (!pWin)
    {
        client->errorValue = stuff->id;
        return (BadWindow);
    }

    if (!ValidAtom(stuff->atom))
    {
        client->errorValue = stuff->atom;
        return (BadAtom);
    }

    /* first see if property already exists */
    pProp = wUserProps (pWin);
    while (pProp)
    {
        if (pProp->propertyName == stuff->atom)
            break;
        pProp = pProp->next;
    }

    if (!pProp)
    {
        /* property does not exist */
        client->errorValue = stuff->atom;
        return (BadAtom);
    }

     /* Requires win_mac_write privilege */
    if (!client_has_privilege(tsolinfo, pset_win_mac_write)) {
        return (BadAccess);
    }

    /* Initialize property created internally by server */
    tsolprop = TsolPropertyPrivate(pProp);

    tsolprop->uid = stuff->uid;

    return (client->noClientException);
}

static int
ProcSetResLabel(ClientPtr client)
{
    TsolInfoPtr tsolinfo = GetClientTsolInfo(client);
    bslabel_t  *sl;
    PixmapPtr   pMap;
    WindowPtr   pWin;
    xEvent      message;
    TsolResPtr  tsolres;
    int     rc;

    REQUEST(xSetResLabelReq);

    REQUEST_AT_LEAST_SIZE(xSetResLabelReq);

     /* Requires win_mac_write privilege */
    if (!client_has_privilege(tsolinfo, pset_win_mac_write)) {
        return (BadAccess);
    }

    sl = (bslabel_t *)(stuff + 1);
    switch (stuff->resourceType) {
        case SESSIONHI: /* set server session HI */
            memcpy(&SessionHI, sl, SL_SIZE);
            return (client->noClientException);

        case SESSIONLO: /* set server session LO */
            memcpy(&SessionLO, sl, SL_SIZE);
            return (client->noClientException);

        case IsWindow:
        rc = dixLookupWindow(&pWin, stuff->id, client, DixWriteAccess);
        if (rc != Success)
        return rc;

            if (pWin)
            {
                tsolres = TsolWindowPrivate(pWin);
            }
            else
            {
                client->errorValue = stuff->id;
                return (BadWindow);
            }
            break;

        case IsPixmap:
        rc = dixLookupDrawable((DrawablePtr *)&pMap, stuff->id, client,
                   M_DRAWABLE_PIXMAP, DixWriteAccess);
        if (rc != Success)
        return rc;
            if (pMap)
            {
                tsolres = TsolPixmapPrivate(pMap);
            }
            else
            {
                client->errorValue = stuff->id;
                return (BadPixmap);
            }
            break;
    default:
        client->errorValue = stuff->resourceType;
        return (BadValue);
    }

    if (!blequal(tsolres->sl, sl)) {
    tsolres->sl = lookupSL(sl);
    }

    /* generate the notify event for windows */

    if (stuff->resourceType == IsWindow)
    {
    rc = dixLookupWindow(&pWin, stuff->id, client, DixReadAccess);
        if (rc != Success)
        return rc;

        message.u.u.type = ClientMessage; /* 33 */
        message.u.u.detail = 32;
        message.u.clientMessage.window = RootOf(pWin);
        message.u.clientMessage.u.l.type =
            MakeAtom("_TSOL_CMWLABEL_CHANGE", 21, 1);
        message.u.clientMessage.u.l.longs0 = RootOfClient(pWin);
        message.u.clientMessage.u.l.longs1 = stuff->id;
        DeliverEventsToWindow(PickPointer(client), pWin, &message, 1,
                              SubstructureRedirectMask, NullGrab);

    }
    return (client->noClientException);
}

static int
ProcSetResUID(ClientPtr client)
{
    TsolInfoPtr tsolinfo = GetClientTsolInfo(client);
    int       ScreenNumber;
    PixmapPtr pMap;
    WindowPtr pWin;
    TsolResPtr tsolres;
    int        rc;
    extern priv_set_t *pset_win_dac_write;

    REQUEST(xSetResUIDReq);

    REQUEST_SIZE_MATCH(xSetResUIDReq);

    switch (stuff->resourceType)
    {
        case STRIPEHEIGHT:
            if (!HasTrustedPath(tsolinfo))
                return (BadAccess);
            StripeHeight = stuff->uid;
            ScreenNumber = stuff->id;

            /* set Screen Stripe Size  */
            DoScreenStripeHeight(ScreenNumber);
            ScreenStripeHeight [ScreenNumber] = StripeHeight;
            return (client->noClientException);

        case RES_OUID:
            if (!HasTrustedPath(tsolinfo))
                return (BadAccess);

            OwnerUID = stuff->uid;
            OwnerUIDint = OwnerUID;
            AddUID(&OwnerUIDint);
            return (client->noClientException);

        case IsWindow:
        rc = dixLookupWindow(&pWin, stuff->id, client, DixWriteAccess);
        if (rc != Success)
        return rc;

            if (pWin)
            {
                tsolres = TsolWindowPrivate(pWin);
            }
            else
            {
                client->errorValue = stuff->id;
                return (BadWindow);
            }
            break;
        case IsPixmap:
        rc = dixLookupDrawable((DrawablePtr *)&pMap, stuff->id, client,
                   M_DRAWABLE_PIXMAP, DixWriteAccess);
        if (rc != Success)
        return rc;

            if (pMap)
            {
                tsolres = TsolPixmapPrivate(pMap);
            }
            else
            {
                client->errorValue = stuff->id;
                return (BadPixmap);
            }
            break;
        default:
            return (BadValue);
    }

     /* Requires win_dac_write privilege */
    if (!client_has_privilege(tsolinfo, pset_win_dac_write)) {
        return (BadAccess);
    }

    tsolres->uid = stuff->uid;

    return (client->noClientException);
}

static int
ProcGetClientAttributes(ClientPtr client)
{
    int         n;
    int         rc;
    ClientPtr   res_client; /* resource owner client */
    TsolInfoPtr tsolinfo, res_tsolinfo;
    WindowPtr   pWin;

    xGetClientAttributesReply rep;

    REQUEST(xGetClientAttributesReq);
    REQUEST_SIZE_MATCH(xGetClientAttributesReq);

    /* Valid window check */
    rc = dixLookupWindow(&pWin, stuff->id, client, DixReadAccess);
    if (rc != Success)
    return rc;

    if (!(res_client = clients[CLIENT_ID(stuff->id)]))
    {
        client->errorValue = stuff->id;
        return (BadWindow);
    }

    tsolinfo = GetClientTsolInfo(client);
    res_tsolinfo = GetClientTsolInfo(res_client);

    /* Transfer the client info to reply rec */
    rep.type = X_Reply;
    rep.sequenceNumber = client->sequence;
    rep.trustflag = (res_tsolinfo->forced_trust == 1
    || res_tsolinfo->trusted_path) ? (BYTE)1 : (BYTE)0;
    rep.uid = (CARD32) res_tsolinfo->uid;
    rep.pid = (CARD32) res_tsolinfo->pid;
    rep.gid = (CARD32) res_tsolinfo->gid;
    rep.auditid = (CARD32) res_tsolinfo->auid;
    rep.sessionid = (CARD32) res_tsolinfo->asid;
    rep.iaddr = (CARD32) res_tsolinfo->iaddr;
    rep.length = (CARD32) 0;

    if (client->swapped)
    {
        swaps(&rep.sequenceNumber, n);
        swapl(&rep.length, n);
        swapl(&rep.uid, n);
        swapl(&rep.pid, n);
        swapl(&rep.gid, n);
        swapl(&rep.auditid, n);
        swapl(&rep.sessionid, n);
        swapl(&rep.iaddr, n);
    }

    WriteToClient(client, sizeof(xGetClientAttributesReply), (char *)&rep);

    return (client->noClientException);
}

static int
ProcGetClientLabel(ClientPtr client)
{
    int         n;
    int         reply_length = 0;
    int         rc;
    Bool        write_to_client = 0;
    bslabel_t   *sl;
    ClientPtr   res_client; /* resource owner client */
    TsolInfoPtr tsolinfo, res_tsolinfo;
    WindowPtr   pWin;

    xGenericReply rep;

    REQUEST(xGetClientLabelReq);
    REQUEST_SIZE_MATCH(xGetClientLabelReq);

    /* Valid window check */
    rc = dixLookupWindow(&pWin, stuff->id, client, DixReadAccess);
    if (rc != Success)
    return rc;

    if (!(res_client = clients[CLIENT_ID(stuff->id)]))
    {
        client->errorValue = stuff->id;
        return (BadWindow);
    }

    tsolinfo = GetClientTsolInfo(client);
    res_tsolinfo = GetClientTsolInfo(res_client);

    /* Transfer the client info to reply rec */
    rep.type = X_Reply;
    rep.sequenceNumber = client->sequence;

    /* allocate temp storage for labels */
    sl = malloc(SL_SIZE);
    rep.data00 = rep.data01 = 0;
    if (sl == NULL)
        return (BadAlloc);

    /* fill the fields as per request mask */
    if (stuff->mask & RES_SL)
    {
        memcpy(sl, res_tsolinfo->sl, SL_SIZE);
        rep.data00 = SL_SIZE;
    }

    rep.length = (CARD32)(rep.data00)/4;

    if (rep.length > 0)
    {
        reply_length = rep.length*4;
        write_to_client = 1;
    }
    if (client->swapped)
    {
        swaps(&rep.sequenceNumber, n);
        swapl(&rep.length, n);
        swapl(&rep.data00, n);
        swapl(&rep.data01, n);
    }

    WriteToClient(client, sizeof(xGenericReply), (char *)&rep);

    if (write_to_client == 1)
    {
        WriteToClient(client, reply_length, (char *)sl);
    }
    free(sl);

    return (client->noClientException);
}

static int
ProcGetPropAttributes(ClientPtr client)
{
    int          n;
    int          reply_length = 0;
    int          rc;
    Bool         write_to_client = 0;
    PropertyPtr  pProp;
    bslabel_t   *sl;
    WindowPtr    pWin;
    TsolResPtr  tsolprop;
    TsolResPtr  tsolres;
    TsolInfoPtr  tsolinfo = GetClientTsolInfo(client);

    xGetPropAttributesReply rep;

    REQUEST(xGetPropAttributesReq);

    REQUEST_SIZE_MATCH(xGetPropAttributesReq);

    rc = dixLookupWindow(&pWin, stuff->id, client, DixReadAccess);
    if (rc != Success)
    return rc;

    if (!ValidAtom(stuff->atom))
    {
        client->errorValue = stuff->atom;
        return (BadAtom);
    }

    /* first see if property already exists */
    pProp = wUserProps (pWin);
    while (pProp)
    {
        tsolprop = TsolPropertyPrivate(pProp);

        if (pProp->propertyName == stuff->atom) {

            if (tsolpolyinstinfo.enabled) {
                if (tsolprop->uid == tsolpolyinstinfo.uid &&
                        tsolprop->sl == tsolpolyinstinfo.sl)
                    break; /* match found */
            } else {
                if (tsolprop->uid == tsolinfo->uid &&
                        tsolprop->sl == tsolinfo->sl) {
                    break; /* match found */
                }
            }
        }
        pProp = pProp->next;
    }

    if (!pProp)
    {
        /* property does not exist, use window's attributes */
    tsolres = TsolWindowPrivate(pWin);
    tsolprop = NULL;
    }

    if (stuff->mask & RES_UID)
    {
        rep.uid = tsolprop ? tsolprop->uid : tsolres->uid;
    }

    /* allocate temp storage for labels */
    sl = malloc(SL_SIZE);
    rep.sllength = rep.illength = 0;
    if (sl == NULL)
        return (BadAlloc);

    /* fill the fields as per request mask */
    if (stuff->mask & RES_SL)
    {
        memcpy(sl, tsolprop ? tsolprop->sl : tsolres->sl, SL_SIZE);
        rep.sllength = SL_SIZE;
    }

    rep.type = X_Reply;
    rep.sequenceNumber = client->sequence;
    rep.length = (CARD32) (rep.sllength)/4;

    if (rep.length > 0)
    {
        reply_length = rep.length*4;
        write_to_client = 1;
    }
    if (client->swapped)
    {
        swaps(&rep.sequenceNumber, n);
        swapl(&rep.length, n);
        swapl(&rep.uid, n);
        swaps(&rep.sllength, n);
        swaps(&rep.illength, n);
    }

    WriteToClient(client, sizeof(xGetPropAttributesReply), (char *)&rep);

    if (write_to_client == 1)
    {
        WriteToClient(client, reply_length, (char *)sl);
    }
    free(sl);

    return (client->noClientException);
}

static int
ProcGetResAttributes(ClientPtr client)
{
    int         n;
    int         reply_length = 0;
    int         rc;
    Bool        write_to_client = 0;
    bslabel_t  *sl;
    PixmapPtr   pMap;
    WindowPtr   pWin;
    TsolResPtr  tsolres = NULL;

    xGetResAttributesReply rep;

    REQUEST(xGetResAttributesReq);

    REQUEST_SIZE_MATCH(xGetResAttributesReq);

    if (stuff->mask & RES_STRIPE)
    {
        rep.uid = ScreenStripeHeight[stuff->id];
    }
    if (stuff->mask & RES_OUID)
    {
        rep.owneruid = OwnerUID;
    }
    if (stuff->resourceType == IsWindow &&
        (stuff->mask & (RES_UID | RES_SL )))
    {
    rc = dixLookupWindow(&pWin, stuff->id, client, DixReadAccess);
    if (rc != Success)
        return rc;

    tsolres = TsolWindowPrivate(pWin);
    }

    if (stuff->resourceType == IsPixmap &&
        (stuff->mask & (RES_UID | RES_SL )))
    {
    rc = dixLookupDrawable((DrawablePtr *)&pMap, stuff->id, client,
                   M_DRAWABLE_PIXMAP, DixWriteAccess);
    if (rc != Success)
        return rc;

    tsolres = TsolPixmapPrivate(pMap);
    }

    if (stuff->mask & RES_UID)
    {
        rep.uid = tsolres->uid;
    }

    /* allocate temp storage for labels */
    sl = malloc(SL_SIZE);
    rep.sllength = rep.illength = rep.iillength = 0;
    if (sl == NULL)
        return (BadAlloc);

    /* fill the fields as per request mask */
    if (stuff->mask & RES_SL)
    {
        memcpy(sl, tsolres->sl, SL_SIZE);
        rep.sllength = SL_SIZE;
    }

    rep.type = X_Reply;
    rep.sequenceNumber = client->sequence;
    rep.length = (CARD32) (rep.sllength)/4;

    if (rep.length > 0)
    {
        reply_length = rep.length*4;
        write_to_client = 1;
    }
    if (client->swapped)
    {
        swaps(&rep.sequenceNumber, n);
        swapl(&rep.length, n);
        swapl(&rep.uid, n);
        swapl(&rep.owneruid, n);
        swaps(&rep.sllength, n);
        swaps(&rep.illength, n);
        swaps(&rep.iillength, n);
    }

    WriteToClient(client, sizeof(xGetResAttributesReply), (char *)&rep);

    if (write_to_client == 1)
    {
            WriteToClient(client, reply_length, (char *)sl);
    }
    free(sl);

    return (client->noClientException);
}

int
ProcMakeTPWindow(ClientPtr client)
{
    WindowPtr pWin = NULL, pParent;
    int       rc;
    TsolInfoPtr  tsolinfo;

    REQUEST(xMakeTPWindowReq);
    REQUEST_SIZE_MATCH(xMakeTPWindowReq);

    /*
     * Session type single-level? This is set by the
     * label builder
     */
    tsolinfo = GetClientTsolInfo(client);
    if (tsolinfo && HasTrustedPath(tsolinfo) &&
        blequal(&SessionLO, &SessionHI) && stuff->id == 0) {
    tsolMultiLevel = FALSE;
    return (client->noClientException);
    }

#if defined(PANORAMIX)
    if (!noPanoramiXExtension)
    {
        PanoramiXRes     *panres = NULL;
        int         j;

    rc = dixLookupResourceByType((pointer *) &panres, stuff->id,
                     XRT_WINDOW, client, DixWriteAccess);
    if (rc != Success)
        return rc;

    FOR_NSCREENS_BACKWARD(j)
    {
        rc = dixLookupWindow(&pWin, panres->info[j].id,
            client, DixWriteAccess);
        if (rc != Success)
            return rc;

        /* window should not be root but child of root */
        if (!pWin || (!pWin->parent))
        {
            client->errorValue = stuff->id;
            return (BadWindow);
        }

        pParent = pWin->parent;
        if (pParent->firstChild != pWin)
        {
            tpwin = (WindowPtr)NULL;
            ReflectStackChange(pWin, pParent->firstChild, VTStack);
        }
    }
    } else
#endif
    {
    rc = dixLookupWindow(&pWin, stuff->id, client, DixWriteAccess);
    if (rc != Success)
        return rc;


    /* window should not be root but child of root */
    if (!pWin || (!pWin->parent))
    {
            client->errorValue = stuff->id;
            return (BadWindow);
    }

    pParent = pWin->parent;
    if (pParent->firstChild != pWin)
    {
        tpwin = (WindowPtr)NULL;
        ReflectStackChange(pWin, pParent->firstChild, VTStack);
    }
    }

    tpwin = pWin;

    /*
     * Force kbd & ptr ungrab. This will cause
     * screen to lock even when kbd/ptr grabbed by
     * a client
     */
    BreakAllGrabs(client);
    return (client->noClientException);
}

/*
 * Turn on window's Trusted bit
 */
static int
ProcMakeTrustedWindow(ClientPtr client)
{
    WindowPtr    pWin;
    int          rc;
    TsolInfoPtr  tsolinfo;

    REQUEST(xMakeTrustedWindowReq);
    REQUEST_SIZE_MATCH(xMakeTrustedWindowReq);

    rc = dixLookupWindow(&pWin, stuff->id, client, DixWriteAccess);
    if (rc != Success)
    return rc;

    /* window should not be root but child of root */
    if (!pWin || (!pWin->parent))
    {
        client->errorValue = stuff->id;
        return (BadWindow);
    }
    tsolinfo = GetClientTsolInfo(client);

    if (!HasTrustedPath(tsolinfo))
    return (BadAccess);

    /* Turn on Trusted bit of the window */
    tsolinfo->forced_trust = 1;
    return (client->noClientException);
}

/*
 * Turn off window's Trusted bit
 */
static int
ProcMakeUntrustedWindow(ClientPtr client)
{
    WindowPtr    pWin;
    int          rc;
    TsolInfoPtr  tsolinfo;

    REQUEST(xMakeUntrustedWindowReq);
    REQUEST_SIZE_MATCH(xMakeUntrustedWindowReq);

    rc = dixLookupWindow(&pWin, stuff->id, client, DixWriteAccess);
    if (rc != Success)
    return rc;

    /* window should not be root but child of root */
    if (!pWin || (!pWin->parent))
    {
        client->errorValue = stuff->id;
        return (BadWindow);
    }

    tsolinfo = GetClientTsolInfo(client);
    if (!HasTrustedPath(tsolinfo))
    return (BadAccess);

    tsolinfo->forced_trust = 0;
    tsolinfo->trusted_path = FALSE;

    return (client->noClientException);
}

/*
 * Break keyboard & ptr grabs of clients other than
 * the requesting client.
 * Called from ProcMakeTPWindow.
 */
static void
BreakAllGrabs(ClientPtr client)
{
    ClientPtr       grabclient;
    DeviceIntPtr    keybd = PickKeyboard(client);
    GrabPtr         kbdgrab = keybd->deviceGrab.grab;
    DeviceIntPtr    mouse = PickPointer(client);
    GrabPtr         ptrgrab = mouse->deviceGrab.grab;

    if (kbdgrab) {
        grabclient = clients[CLIENT_ID(kbdgrab->resource)];
        if (client->index != grabclient->index)
            (*keybd->deviceGrab.DeactivateGrab)(keybd);
    }

    if (ptrgrab) {
        grabclient = clients[CLIENT_ID(ptrgrab->resource)];
        if (client->index != grabclient->index)
            (*mouse->deviceGrab.DeactivateGrab)(mouse);
        }
}

/*
 * Trusted Network interface module. Uses tsix API
 */
extern au_id_t ucred_getauid(const ucred_t *uc);
extern au_asid_t ucred_getasid(const ucred_t *uc);
extern const au_mask_t *ucred_getamask(const ucred_t *uc);
extern tsol_host_type_t tsol_getrhtype(char *);

static void
TsolSetClientInfo(ClientPtr client)
{
    bslabel_t *sl;
    bslabel_t admin_low;
    priv_set_t *privs;
    const au_mask_t *amask;
    socklen_t namelen;
    struct auditinfo auinfo;
    struct auditinfo *pauinfo;
    OsCommPtr oc = (OsCommPtr)client->osPrivate;
    int fd = oc->fd;
    ucred_t *uc = NULL;

    TsolInfoPtr tsolinfo = TsolClientPrivate(client);

    /* Get client attributes from the socket */
    if (getpeerucred(fd, &uc) == -1) {
        const char *errmsg = strerror(errno);

        tsolinfo->uid = (uid_t)(-1);
        tsolinfo->sl = NULL;
        snprintf(tsolinfo->pname, MAXNAME,
             "client id %d (pid unknown)", client->index);
        LogMessageVerb(X_WARNING, TSOL_MSG_WARNING,
                   TSOL_LOG_PREFIX "Cannot get client attributes"
                   " for %s, getpeerucred failed: %s\n",
                   tsolinfo->pname, errmsg);
        return;
    }

    /* Extract individual fields from the cred structure */
    tsolinfo->zid = ucred_getzoneid(uc);
    tsolinfo->uid = ucred_getruid(uc);
    tsolinfo->euid = ucred_geteuid(uc);
    tsolinfo->gid = ucred_getrgid(uc);
    tsolinfo->egid = ucred_getegid(uc);
    tsolinfo->pid = ucred_getpid(uc);
    sl = ucred_getlabel(uc);
    tsolinfo->sl = (bslabel_t *)lookupSL(sl);

    /* store a string for debug/error messages - would be nice to
       get the real process name out of /proc in the future
     */
    snprintf(tsolinfo->pname, MAXNAME, "client id %d (pid %d)",
         client->index, tsolinfo->pid);

    /* Set privileges */
    if ((tsolinfo->privs = priv_allocset()) != NULL) {
        if (tsolMultiLevel) {
            privs = (priv_set_t *)ucred_getprivset(uc, PRIV_EFFECTIVE);
            if (privs == NULL) {
                priv_emptyset(tsolinfo->privs);
            } else {
                priv_copyset(privs, tsolinfo->privs);
            }
        } else {
            priv_fillset(tsolinfo->privs);
        }
    }

    tsolinfo->priv_debug = FALSE;


    /*
     * For remote hosts, the uid is determined during access control
     * using Secure RPC
     */
    if (tsolinfo->zid == (zoneid_t)-1) {
        tsolinfo->client_type = CLIENT_REMOTE;
    } else {
        tsolinfo->client_type = CLIENT_LOCAL;
    }


    /* Set Trusted Path for local clients */
    if (tsolinfo->zid == GLOBAL_ZONEID) {
        tsolinfo->trusted_path = TRUE;
    }else {
        tsolinfo->trusted_path = FALSE;
    }

    if (tsolinfo->trusted_path || !tsolMultiLevel)
        setClientTrustLevel(client, XSecurityClientTrusted);
    else
        setClientTrustLevel(client, XSecurityClientUntrusted);

        tsolinfo->forced_trust = 0;
        tsolinfo->iaddr = 0;

    bsllow(&admin_low);

    /* Set reasonable defaults for remote clients */
    namelen = sizeof (tsolinfo->saddr);
    if (getpeername(fd, (struct sockaddr *)&tsolinfo->saddr, &namelen) == 0
      && (tsolinfo->client_type == CLIENT_REMOTE)) {
        int errcode;
        char hostbuf[NI_MAXHOST];
        tsol_host_type_t host_type;

        /* Use NI_NUMERICHOST to avoid DNS lookup */
        errcode = getnameinfo((struct sockaddr *)&(tsolinfo->saddr), namelen,
            hostbuf, sizeof(hostbuf), NULL, 0, NI_NUMERICHOST);

        if (errcode) {
            perror(gai_strerror(errcode));
        } else {
            host_type = tsol_getrhtype(hostbuf);
            if ((host_type == SUN_CIPSO) &&
                blequal(tsolinfo->sl, &admin_low)) {
                tsolinfo->trusted_path = TRUE;
                setClientTrustLevel(client,
                            XSecurityClientTrusted);
                priv_fillset(tsolinfo->privs);
            }
        }
    }

    /* setup audit context */
    if (getaudit(&auinfo) == 0) {
        pauinfo = &auinfo;
    } else {
        pauinfo = NULL;
    }

    /* Audit id */
    tsolinfo->auid = ucred_getauid(uc);
    if (tsolinfo->auid == AU_NOAUDITID) {
        tsolinfo->auid = UID_NOBODY;
    }

    /* session id */
    tsolinfo->asid = ucred_getasid(uc);

    /* Audit mask */
    if ((amask = ucred_getamask(uc)) != NULL) {
        tsolinfo->amask = *amask;
    } else {
        if (pauinfo != NULL) {
            tsolinfo->amask = pauinfo->ai_mask;
        } else {
            tsolinfo->amask.am_failure = 0; /* clear the masks */
            tsolinfo->amask.am_success = 0;
        }
    }

    tsolinfo->asaverd = 0;

    ucred_free(uc);
}

static enum auth_stat tsol_why;
extern bool_t xdr_opaque_auth(XDR *, struct opaque_auth *);

static char *
tsol_authdes_decode(char *inmsg, int len)
{
    struct rpc_msg  msg;
    char            cred_area[MAX_AUTH_BYTES];
    char            verf_area[MAX_AUTH_BYTES];
    char            *temp_inmsg;
    struct svc_req  r;
    bool_t          res0, res1;
    XDR             xdr;
    SVCXPRT         xprt;

    temp_inmsg = malloc(len);
    memmove(temp_inmsg, inmsg, len);

    memset((char *)&msg, 0, sizeof(msg));
    memset((char *)&r, 0, sizeof(r));
    memset(cred_area, 0, sizeof(cred_area));
    memset(verf_area, 0, sizeof(verf_area));

    msg.rm_call.cb_cred.oa_base = cred_area;
    msg.rm_call.cb_verf.oa_base = verf_area;
    tsol_why = AUTH_FAILED;
    xdrmem_create(&xdr, temp_inmsg, len, XDR_DECODE);

    if ((r.rq_clntcred = malloc(MAX_AUTH_BYTES)) == NULL)
        goto bad1;
    r.rq_xprt = &xprt;

    /* decode into msg */
    res0 = xdr_opaque_auth(&xdr, &(msg.rm_call.cb_cred));
    res1 = xdr_opaque_auth(&xdr, &(msg.rm_call.cb_verf));
    if ( ! (res0 && res1) )
         goto bad2;

    /* do the authentication */

    r.rq_cred = msg.rm_call.cb_cred;        /* read by opaque stuff */
    if (r.rq_cred.oa_flavor != AUTH_DES) {
        tsol_why = AUTH_TOOWEAK;
        goto bad2;
    }
#ifdef SVR4
    if ((tsol_why = __authenticate(&r, &msg)) != AUTH_OK) {
#else
    if ((tsol_why = _authenticate(&r, &msg)) != AUTH_OK) {
#endif
            goto bad2;
    }
    return (((struct authdes_cred *) r.rq_clntcred)->adc_fullname.name);

bad2:
    free(r.rq_clntcred);
bad1:
    return ((char *)0); /* ((struct authdes_cred *) NULL); */
}

static Bool
TsolCheckNetName (unsigned char *addr, short len, pointer closure)
{
    return (len == (short) strlen ((char *) closure) &&
            strncmp ((char *) addr, (char *) closure, len) == 0);
}

extern  int getdomainname(char *, int);

static XID
TsolCheckAuthorization(unsigned int name_length, char *name,
               unsigned int data_length, char *data,
               ClientPtr client, char **reason)
{
    char    domainname[128];
    char    netname[128];
    char    audit_ret;
    uint_t  audit_val;
    uid_t   client_uid;
    gid_t   client_gid;
    int client_gidlen;
    char    *fullname;
    gid_t   client_gidlist;
    XID auth_token = (XID)(-1);
    TsolInfoPtr tsolinfo = GetClientTsolInfo(client);

    if (tsolinfo->uid == (uid_t) -1) {
        /* Retrieve uid from SecureRPC */
        if (strncmp(name, SECURE_RPC_AUTH, (size_t)name_length) == 0) {
            fullname = tsol_authdes_decode(data, data_length);
            if (fullname == NULL) {
                ErrorF("Unable to authenticate Secure RPC client");
            } else {
                if (netname2user(fullname,
                    &client_uid, &client_gid,
                    &client_gidlen, &client_gidlist)) {
                    tsolinfo->uid = client_uid;
                } else {
                    ErrorF("netname2user failed");
                }
            }
        }
    }

    if (tsolinfo->uid == (uid_t)-1) {
        tsolinfo->uid = UID_NOBODY; /* uid not available */
    }

    /*
     * For multilevel desktop, limit connections to the trusted path
     * i.e. global zone until a user logs in and the trusted stripe
     * is in place. Unlabeled connections are rejected.
     */
    if ((OwnerUID == (uid_t)(-1)) || (tsolMultiLevel && tpwin == NULL)) {
        if (HasTrustedPath(tsolinfo)) {
            auth_token = CheckAuthorization(name_length, name, data_length,
                data, client, reason);
        }
    } else {
        /*
         * Workstation Owner set, client must be within label
         * range or have trusted path
         */
        if (tsolinfo->uid == OwnerUID) {
            if ((tsolinfo->sl != NULL &&
                 (bldominates(tsolinfo->sl, &SessionLO) &&
                  bldominates(&SessionHI, tsolinfo->sl))) ||
                (HasTrustedPath(tsolinfo))) {
                auth_token = (XID)(tsolinfo->uid);
            }
        } else {
            /* Allow root from global zone */
            if (tsolinfo->uid == 0 && HasTrustedPath(tsolinfo)) {
                auth_token = (XID)(tsolinfo->uid);
            } else {
                /*
                 * Access check based on uid. Check if
                 * roles or other uids have  been added by
                 * xhost +role@
                 */
                getdomainname(domainname, sizeof(domainname));
                if (!user2netname(netname, tsolinfo->uid, domainname)) {
                    return ((XID)-1);
                }
                if (ForEachHostInFamily (FamilyNetname, TsolCheckNetName,
                        (pointer) netname)) {
                    return ((XID)(tsolinfo->uid));
                } else {
                    return (CheckAuthorization(name_length, name, data_length,
                        data, client, reason));
                }
            }
        }
    }

    /* Audit the connection */
    if (auth_token == (XID)(-1)) {
        audit_ret = (char )-1; /* failure */
        audit_val = 1;
    } else {
        audit_ret = 0; /* success */
        audit_val = 0;
    }

    if (system_audit_on &&
        (au_preselect(AUE_ClientConnect, &(tsolinfo->amask),
                      AU_PRS_BOTH, AU_PRS_USECACHE) == 1)) {
        int status;
        ushort_t connect_port = 0;
        struct in_addr *connect_addr = NULL;
        struct sockaddr_in *sin;
        struct sockaddr_in6 *sin6;

        switch (tsolinfo->saddr.ss_family) {
                        case AF_INET:
                                sin = (struct sockaddr_in *)&(tsolinfo->saddr);
                                connect_addr = &(sin->sin_addr);
                                connect_port = sin->sin_port;
                                break;
                        case AF_INET6:
                                sin6 = (struct sockaddr_in6 *)&(tsolinfo->saddr);
                                connect_addr = (struct in_addr *)&(sin6->sin6_addr);
                                connect_port = sin6->sin6_port;
                                break;
        }

        if (connect_addr == NULL || connect_port == 0) {
                status = auditwrite(AW_EVENTNUM, AUE_ClientConnect,
                AW_XCLIENT, client->index,
                AW_SLABEL, tsolinfo->sl,
                AW_RETURN, audit_ret, audit_val,
                AW_WRITE, AW_END);
        } else {
                status = auditwrite(AW_EVENTNUM, AUE_ClientConnect,
                AW_XCLIENT, client->index,
                AW_SLABEL, tsolinfo->sl,
                AW_INADDR, connect_addr,
                AW_IPORT, connect_port,
                AW_RETURN, audit_ret, audit_val,
                AW_WRITE, AW_END);
        }

        if (!status)
            (void) auditwrite(AW_FLUSH, AW_END);
        tsolinfo->flags &= ~TSOL_DOXAUDIT;
        tsolinfo->flags &= ~TSOL_AUDITEVENT;
    }

    return (auth_token);
}

static CALLBACK(
TsolProcessKeyboard)
{
    XaceKeyAvailRec *rec = (XaceKeyAvailRec *) calldata;
    xEvent *xE = rec->event;
    DeviceIntPtr keybd = rec->keybd;
/*  int count = rec->count; */
    HotKeyPtr hotkey = TsolKeyboardPrivate(keybd);

    if (xE->u.u.type == KeyPress)
    {
    if (!hotkey->initialized)
        InitHotKey(keybd);

        if (((xE->u.u.detail == hotkey->key) &&
        (xE->u.keyButtonPointer.state != 0 &&
         xE->u.keyButtonPointer.state == hotkey->shift)) ||
            ((xE->u.u.detail == hotkey->altkey) &&
        (xE->u.keyButtonPointer.state != 0 &&
         xE->u.keyButtonPointer.state == hotkey->altshift)))
    {
        HandleHotKey(keybd);
    }
    }
}

static CALLBACK(
TsolCheckSendAccess)
{
    XaceSendAccessRec *rec = (XaceSendAccessRec *) calldata;
    ClientPtr client = rec->client;
    WindowPtr pWin = rec->pWin;
    TsolResPtr tsolres;
    xpolicy_t flags;
    TsolInfoPtr tsolinfo;

    rec->status = BadAccess;
    if (client == NULL) {
        rec->status = Success;
        return;
    }

    if (WindowIsRoot(pWin) || XTSOLTrusted(pWin)) {
        rec->status = Success;
        return;
    }

    tsolinfo = GetClientTsolInfo(client);
    tsolres = TsolWindowPrivate(pWin);
    flags = (TSOL_MAC|TSOL_DAC|TSOL_DOMINATE|TSOL_READOP);
    rec->status = tsol_check_policy(tsolinfo, tsolres, flags, MAJOROP_CODE);

#ifndef NO_TSOL_DEBUG_MESSAGES
    if (rec->status != Success) {
        tsolinfo = GetClientTsolInfo(client);
        LogMessageVerb(X_WARNING, TSOL_MSG_WARNING,
           TSOL_LOG_PREFIX
           "TsolCheckSendAccess(%s, %s) = %s\n",
           tsolinfo->pname,
           TsolRequestNameString(MAJOROP_CODE),
           TsolErrorNameString(rec->status));
    }

#endif /* !NO_TSOL_DEBUG_MESSAGES */
}

static CALLBACK(
TsolCheckReceiveAccess)
{
    XaceReceiveAccessRec *rec = (XaceReceiveAccessRec *) calldata;

    rec->status = Success;
}


static CALLBACK(
TsolCheckSelectionAccess)
{
    XaceSelectionAccessRec *rec = (XaceSelectionAccessRec *) calldata;
    ClientPtr client = rec->client;
    Selection *pSel = *rec->ppSel;
    Atom selAtom = pSel->selection;
    Mask access_mode = rec->access_mode;
    int reqtype;
    TsolResPtr tsolseln;
    TsolInfoPtr tsolinfo; /* tsol client info */
    tsolinfo = GetClientTsolInfo(client);
    int polySelection = PolySelection(selAtom);

    reqtype = MAJOROP_CODE;

    switch (reqtype) {
      case X_SetSelectionOwner:
    /*
     * Special processing for selection agent. This is how
     * we know who to redirect privileged ConvertSelection requests.
     * This is also used to fake the onwership of GetSelectionOwner requests.
     */
    if (selAtom == tsol_atom_sel_agnt) {
        if (HasWinSelection(tsolinfo)) {
            if (tsolinfo->flags & TSOL_AUDITEVENT)
           auditwrite(AW_USEOFPRIV, 1, PRIV_WIN_SELECTION,
                  AW_APPEND, AW_END);
            tsol_sel_agnt = pSel; /* owner of this seln */
        } else {
            if (tsolinfo->flags & TSOL_AUDITEVENT)
            auditwrite(AW_USEOFPRIV, 0, PRIV_WIN_SELECTION,
                  AW_APPEND, AW_END);
        client->errorValue = selAtom;
        rec->status = BadAtom;
        return;
       }
    }

        /*
         * The callback function is only called if at least one matching selection exists.
         * If it has no tsol attributes then we know it is the only match so we don't need to
         * check for polyinstantiation. Just initialize it and return.
         */

    tsolseln = TsolSelectionPrivate(pSel);

    if (tsolseln->sl == NULL) {
            tsolseln->sl = tsolinfo->sl;
            tsolseln->uid = tsolinfo->uid;
        break;
    }

    if (polySelection) {

        /* for poly-selections, search from the beginning to see if sl,uid match */
        for (pSel = CurrentSelections; pSel; pSel = pSel->next) {

        if (pSel->selection == selAtom) {
            tsolseln = TsolSelectionPrivate(pSel);
            if (tsolseln->uid == tsolinfo->uid &&
             tsolseln->sl == tsolinfo->sl)
                break;
        }
        }

        if (pSel) {
        /* found a match */
            *rec->ppSel = pSel;
        } else {
        /*
        * Doesn't match yet; we'll get called again
        * After it gets created.
        */
        rec->status = BadMatch;
        }
    } else {
        /* Assign the sl & uid */
        tsolseln->sl = tsolinfo->sl;
            tsolseln->uid = tsolinfo->uid;
    }
    break;

      case X_GetSelectionOwner:
      case X_ConvertSelection:
        if (polySelection) {

        /* for poly-selections, search from the beginning to see if sl,uid match */
        for (pSel = CurrentSelections; pSel; pSel = pSel->next) {

            if (pSel->selection == selAtom) {
                tsolseln = TsolSelectionPrivate(pSel);
                if (tsolseln->uid == tsolinfo->uid &&
                 tsolseln->sl == tsolinfo->sl)
                    break;
            }
        }

            if (pSel) {
                *rec->ppSel = pSel; /* found match */
            } else {
            /*
            * Doesn't match yet; we'll get called again
            * After it gets created.
            */
            rec->status = BadMatch;
            return;
            }
        }

        /*
         * Selection Agent processing. Override the owner
         */
        tsolseln = TsolSelectionPrivate(pSel);
        if (!HasWinSelection(tsolinfo) &&
            (tsolseln->uid != tsolinfo->uid ||
            tsolseln->sl != tsolinfo->sl) &&
            pSel->window != None && tsol_sel_agnt != NULL) {
                pSel = tsol_sel_agnt;
           } else {
        if (HasWinSelection(tsolinfo) &&
            (tsolinfo->flags & TSOL_AUDITEVENT)) {
            auditwrite(AW_USEOFPRIV, 1, PRIV_WIN_SELECTION, AW_APPEND, AW_END);
        }
        }
        *rec->ppSel = pSel;
        break;

       default:
#ifndef NO_TSOL_DEBUG_MESSAGES
              tsolinfo = GetClientTsolInfo(client);
              LogMessageVerb(X_NOT_IMPLEMENTED, TSOL_MSG_UNIMPLEMENTED,
                     TSOL_LOG_PREFIX
                     "policy not implemented for CheckSelectionAccess(%s, %s, %s, %s) = %s\n",
                      tsolinfo->pname,
                     TsolDixAccessModeNameString(access_mode),
                     TsolRequestNameString(reqtype),
                     NameForAtom(selAtom),
                     TsolErrorNameString(rec->status));
#endif /* !NO_TSOL_DEBUG_MESSAGES */
             break;
    }
}

static CALLBACK(
TsolCheckPropertyAccess)
{
    XacePropertyAccessRec *rec = (XacePropertyAccessRec *) calldata;
    ClientPtr client = rec->client;
    WindowPtr pWin = rec->pWin;
    PropertyPtr pProp = *rec->ppProp;
    Atom propertyName = pProp->propertyName;
    Mask access_mode = rec->access_mode;
    TsolInfoPtr tsolinfo = GetClientTsolInfo(client);
    int reqtype;
    TsolResPtr tsolprop;
    TsolResPtr tsolres;
    Status retcode;
    xpolicy_t flags = 0;

    reqtype = MAJOROP_CODE;
    tsolres = TsolWindowPrivate(pWin);
    if (pProp != NULL) {
    int polyprop = PolyProperty(propertyName, pWin);

    tsolprop = TsolPropertyPrivate(pProp);

    if (!polyprop) {

        tsolres = TsolWindowPrivate(pWin);
        if (tsolprop->sl == NULL) {
        /* Initialize with label/uid etc */
        if (WindowIsRoot(pWin)) {
            tsolprop->sl = tsolinfo->sl;        /* use client's sl/uid */
            tsolprop->uid = tsolinfo->uid;
            tsolprop->pid = tsolinfo->pid;
            if (client == serverClient)
            tsolprop->internal = TRUE;
            else
                tsolprop->internal = FALSE;
        } else {
            tsolprop->sl = tsolres->sl;         /* use window's sl/uid */
            tsolprop->uid = tsolres->uid;
            tsolprop->pid = tsolres->pid;
                }
        }

        if (access_mode & (DixReadAccess | DixGetAttrAccess))
            flags = (TSOL_MAC|TSOL_DAC|TSOL_DOMINATE|TSOL_READOP);

        if (access_mode & (DixWriteAccess | DixSetAttrAccess))
            flags = (TSOL_MAC|TSOL_DAC|TSOL_WRITEOP);

        retcode = tsol_check_policy(tsolinfo, tsolprop, flags, MAJOROP_CODE);
        if (retcode != Success && (access_mode & DixGetAttrAccess)) {
        /* If current property is not accessible, move on to
         *  next one for ListProperty
         */
        retcode = Success;
        *rec->ppProp = pProp->next; /* ignore failurefor List Prop */
        }
        rec->status = retcode;
    } else {
        /* Handle polyinstantiated property */
        if (tsolprop->sl == NULL) { /* New PolyProp */
        if (!(access_mode & DixCreateAccess)) {
            rec->status = BadImplementation;
            return;
            }
        /* Initialize with label/uid */
        tsolprop->sl = tsolinfo->sl;
        tsolprop->uid = tsolinfo->uid;
        rec->status = Success;
        } else {
        /* search for a matching (sl, uid) pair */
        while (pProp) {
            tsolprop = TsolPropertyPrivate(pProp);
            if (pProp->propertyName == propertyName &&
                tsolprop->sl == tsolinfo->sl &&
                tsolprop->uid == tsolinfo->uid)
            break; /* match found */
            pProp = pProp->next;
        }

        if (pProp) {
            *rec->ppProp = pProp; /* found */
            rec->status = Success;
        } else {
            rec->status = BadMatch;
            }
        }
    }
#ifndef NO_TSOL_DEBUG_MESSAGES
    LogMessageVerb(X_INFO, TSOL_MSG_ACCESS_TRACE,
           TSOL_LOG_PREFIX
           "TsolCheckPropertyAccess(%s, 0x%x, %s, %s) = %s\n",
           tsolinfo->pname, pWin->drawable.id,
           NameForAtom(propertyName),
           TsolDixAccessModeNameString(access_mode),
           TsolPolicyReturnString(rec->status));
#endif /* !NO_TSOL_DEBUG_MESSAGES */
    }
}

static CALLBACK(
TsolCheckExtensionAccess)
{
    XaceExtAccessRec *rec = (XaceExtAccessRec *) calldata;

    if (TsolDisabledExtension(rec->ext->name)) {
    rec->status = BadAccess;
    } else {
    rec->status = Success;
    }
}

#ifdef UNUSED
/*
 * Return TRUE if host is cipso
 */
int
host_is_cipso(int fd)
{
    struct sockaddr sname;
    socklen_t namelen;
    char *rhost;
    tsol_host_type_t host_type;
    struct sockaddr_in *so = (struct sockaddr_in *)&sname;
    extern tsol_host_type_t tsol_getrhtype(char *);

    namelen = sizeof (sname);
    if (getpeername(fd, &sname, &namelen) == -1) {
        perror("getsockname: failed\n");
        return FALSE;
    }

    rhost = inet_ntoa(so->sin_addr);
    host_type = tsol_getrhtype(rhost);
    if (host_type == SUN_CIPSO) {
        return TRUE;
    }

    return FALSE;
}
#endif