C++ IsDefinedClass函数代码示例

void EvalContextHeapAddHard(EvalContext *ctx, const char *context)
{
    char context_copy[CF_MAXVARSIZE];

    strcpy(context_copy, context);
    if (Chop(context_copy, CF_EXPANDSIZE) == -1)
    {
        CfOut(OUTPUT_LEVEL_ERROR, "", "Chop was called on a string that seemed to have no terminator");
    }
    CanonifyNameInPlace(context_copy);

    CfDebug("EvalContextHeapAddHard(%s)\n", context_copy);

    if (strlen(context_copy) == 0)
    {
        return;
    }

    if (IsRegexItemIn(ctx, ctx->heap_abort_current_bundle, context_copy))
    {
        CfOut(OUTPUT_LEVEL_ERROR, "", "Bundle aborted on defined class \"%s\"\n", context_copy);
        ABORTBUNDLE = true;
    }

    if (IsRegexItemIn(ctx, ctx->heap_abort, context_copy))
    {
        CfOut(OUTPUT_LEVEL_ERROR, "", "cf-agent aborted on defined class \"%s\"\n", context_copy);
        exit(1);
    }

    if (EvalContextHeapContainsHard(ctx, context_copy))
    {
        return;
    }

    StringSetAdd(ctx->heap_hard, xstrdup(context_copy));

    for (const Item *ip = ctx->heap_abort; ip != NULL; ip = ip->next)
    {
        if (IsDefinedClass(ctx, ip->name, NULL))
        {
            CfOut(OUTPUT_LEVEL_ERROR, "", "cf-agent aborted on defined class \"%s\" defined in bundle %s\n", ip->name, StackFrameOwnerName(LastStackFrame(ctx, 0)));
            exit(1);
        }
    }

    if (!ABORTBUNDLE)
    {
        for (const Item *ip = ctx->heap_abort_current_bundle; ip != NULL; ip = ip->next)
        {
            if (IsDefinedClass(ctx, ip->name, NULL))
            {
                CfOut(OUTPUT_LEVEL_ERROR, "", " -> Setting abort for \"%s\" when setting \"%s\"", ip->name, context_copy);
                ABORTBUNDLE = true;
                break;
            }
        }
    }
}

int VarClassExcluded(EvalContext *ctx, Promise *pp, char **classes)
{
    Constraint *cp = PromiseGetConstraint(ctx, pp, "ifvarclass");

    if (cp == NULL)
    {
        return false;
    }

    *classes = (char *) ConstraintGetRvalValue(ctx, "ifvarclass", pp, RVAL_TYPE_SCALAR);

    if (*classes == NULL)
    {
        return true;
    }

    if (strchr(*classes, '$') || strchr(*classes, '@'))
    {
        CfDebug("Class expression did not evaluate");
        return true;
    }

    if (*classes && IsDefinedClass(ctx, *classes, PromiseGetNamespace(pp)))
    {
        return false;
    }
    else
    {
        return true;
    }
}

static void KeepServerPromise(Promise *pp)
{
    char *sp = NULL;

    if (!IsDefinedClass(pp->classes))
    {
        CfOut(cf_verbose, "", "Skipping whole promise, as context is %s\n", pp->classes);
        return;
    }

    if (VarClassExcluded(pp, &sp))
    {
        CfOut(cf_verbose, "", "\n");
        CfOut(cf_verbose, "", ". . . . . . . . . . . . . . . . . . . . . . . . . . . . \n");
        CfOut(cf_verbose, "", "Skipping whole next promise (%s), as var-context %s is not relevant\n", pp->promiser,
              sp);
        CfOut(cf_verbose, "", ". . . . . . . . . . . . . . . . . . . . . . . . . . . . \n");
        return;
    }

    if (strcmp(pp->agentsubtype, "classes") == 0)
    {
        KeepClassContextPromise(pp);
        return;
    }

    sp = (char *) GetConstraintValue("resource_type", pp, CF_SCALAR);

    if (strcmp(pp->agentsubtype, "access") == 0 && sp && strcmp(sp, "literal") == 0)
    {
        KeepLiteralAccessPromise(pp, "literal");
        return;
    }

    if (strcmp(pp->agentsubtype, "access") == 0 && sp && strcmp(sp, "query") == 0)
    {
        KeepQueryAccessPromise(pp, "query");
        return;
    }

    if (strcmp(pp->agentsubtype, "access") == 0 && sp && strcmp(sp, "context") == 0)
    {
        KeepLiteralAccessPromise(pp, "context");
        return;
    }

/* Default behaviour is file access */

    if (strcmp(pp->agentsubtype, "access") == 0)
    {
        KeepFileAccessPromise(pp);
        return;
    }

    if (strcmp(pp->agentsubtype, "roles") == 0)
    {
        KeepServerRolePromise(pp);
        return;
    }
}

int IsRegexItemIn(EvalContext *ctx, Item *list, char *regex)
{
    Item *ptr;

    for (ptr = list; ptr != NULL; ptr = ptr->next)
    {
        if ((ptr->classes) && (!IsDefinedClass(ctx, ptr->classes)))
        {
            continue;
        }

        /* Avoid using regex if possible, due to memory leak */

        if (strcmp(regex, ptr->name) == 0)
        {
            return true;
        }

        /* Make it commutative */

        if ((StringMatchFull(regex, ptr->name)) || (StringMatchFull(ptr->name, regex)))
        {
            return true;
        }
    }

    return false;
}

int IsRegexItemIn(const EvalContext *ctx, const Item *list, const char *regex)
{
    for (const Item *ptr = list; ptr != NULL; ptr = ptr->next)
    {
        if (ctx != NULL && ptr->classes != NULL &&
            !IsDefinedClass(ctx, ptr->classes))
        {
            continue;
        }

        /* Cheap pre-test: */
        if (strcmp(regex, ptr->name) == 0)
        {
            return true;
        }

        /* Make it commutative */

        if (StringMatchFull(regex, ptr->name) || StringMatchFull(ptr->name, regex))
        {
            return true;
        }
    }

    return false;
}

int ScheduleRun()

{ time_t now;
  char timekey[64];
  struct Item *ip;

Verbose("Sleeping...\n");
sleep(60);                  /* 1 Minute resolution is enough */ 

now = time(NULL);

snprintf(timekey,63,"%s",ctime(&now)); 
AddTimeClass(timekey); 

for (ip = SCHEDULE; ip != NULL; ip = ip->next)
   {
   Verbose("Checking schedule %s...\n",ip->name);
   if (IsDefinedClass(ip->name))
      {
      Verbose("Waking up the agent at %s ~ %s \n",timekey,ip->name);
      DeleteItemList(VHEAP);
      VHEAP = NULL;
      return true;
      }
   }

DeleteItemList(VHEAP);
VHEAP = NULL; 
return false;
}

FnCallResult FnCallEvaluate(EvalContext *ctx, FnCall *fp, const Promise *caller)
{
    Rlist *expargs;
    const FnCallType *fp_type = FnCallTypeGet(fp->name);

    if (fp_type)
    {
        if (DEBUG)
        {
            printf("EVALUATE FN CALL %s\n", fp->name);
            FnCallShow(stdout, fp);
            printf("\n");
        }
    }
    else
    {
        if (caller)
        {
            CfOut(OUTPUT_LEVEL_ERROR, "", "No such FnCall \"%s()\" in promise @ %s near line %zd\n",
                  fp->name, PromiseGetBundle(caller)->source_path, caller->offset.line);
        }
        else
        {
            CfOut(OUTPUT_LEVEL_ERROR, "", "No such FnCall \"%s()\" - context info unavailable\n", fp->name);
        }

        return (FnCallResult) { FNCALL_FAILURE, { FnCallCopy(fp), RVAL_TYPE_FNCALL } };
    }

/* If the container classes seem not to be defined at this stage, then don't try to expand the function */

    if ((caller != NULL) && !IsDefinedClass(ctx, caller->classes, PromiseGetNamespace(caller)))
    {
        return (FnCallResult) { FNCALL_FAILURE, { FnCallCopy(fp), RVAL_TYPE_FNCALL } };
    }

    expargs = NewExpArgs(ctx, fp, caller);

    if (UnresolvedArgs(expargs))
    {
        DeleteExpArgs(expargs);
        return (FnCallResult) { FNCALL_FAILURE, { FnCallCopy(fp), RVAL_TYPE_FNCALL } };
    }

    fp->caller = caller;

    FnCallResult result = CallFunction(ctx, fp_type, fp, expargs);

    if (result.status == FNCALL_FAILURE)
    {
        /* We do not assign variables to failed function calls */
        DeleteExpArgs(expargs);
        return (FnCallResult) { FNCALL_FAILURE, { FnCallCopy(fp), RVAL_TYPE_FNCALL } };
    }

    DeleteExpArgs(expargs);
    return result;
}

FnCallResult EvaluateFunctionCall(FnCall *fp, Promise *pp)
{
    Rlist *expargs;
    const FnCallType *this = FindFunction(fp->name);

    if (this)
    {
        if (DEBUG)
        {
            printf("EVALUATE FN CALL %s\n", fp->name);
            ShowFnCall(stdout, fp);
            printf("\n");
        }
    }
    else
    {
        if (pp)
        {
            CfOut(cf_error, "", "No such FnCall \"%s()\" in promise @ %s near line %zd\n",
                  fp->name, pp->audit->filename, pp->offset.line);
        }
        else
        {
            CfOut(cf_error, "", "No such FnCall \"%s()\" - context info unavailable\n", fp->name);
        }

        return (FnCallResult) { FNCALL_FAILURE, { CopyFnCall(fp), CF_FNCALL } };
    }

/* If the container classes seem not to be defined at this stage, then don't try to expand the function */

    if ((pp != NULL) && !IsDefinedClass(pp->classes))
    {
        return (FnCallResult) { FNCALL_FAILURE, { CopyFnCall(fp), CF_FNCALL } };
    }

    expargs = NewExpArgs(fp, pp);

    if (UnresolvedArgs(expargs))
    {
        DeleteExpArgs(expargs);
        return (FnCallResult) { FNCALL_FAILURE, { CopyFnCall(fp), CF_FNCALL } };
    }

    FnCallResult result = CallFunction(this, fp, expargs);

    if (result.status == FNCALL_FAILURE)
    {
        /* We do not assign variables to failed function calls */
        DeleteExpArgs(expargs);
        return (FnCallResult) { FNCALL_FAILURE, { CopyFnCall(fp), CF_FNCALL } };
    }

    DeleteExpArgs(expargs);
    return result;
}

/**
 * The "roles" access promise is for remote class activation by means of
 * cf-runagent -D:
 *
 *     pp->promiser is a regex to match classes.
 *     pp->conlist  is an slist of usernames.
 */
static void KeepServerRolePromise(EvalContext *ctx, const Promise *pp)
{
    size_t pos = acl_SortedInsert(&roles_acl, pp->promiser);
    if (pos == (size_t) -1)
    {
        /* Should never happen, besides when allocation fails. */
        Log(LOG_LEVEL_CRIT, "acl_Insert: %s", GetErrorStr());
        exit(255);
    }

    size_t i = SeqLength(pp->conlist);
    while (i > 0)
    {
        i--;
        Constraint *cp = SeqAt(pp->conlist, i);
        char const * const authorizer =
            CF_REMROLE_BODIES[REMOTE_ROLE_AUTHORIZE].lval;

        if (strcmp(cp->lval, authorizer) == 0)
        {
            if (cp->rval.type != RVAL_TYPE_LIST)
            {
                Log(LOG_LEVEL_ERR,
                    "Right-hand side of authorize promise for '%s' should be a list",
                    pp->promiser);
            }
            else if (IsDefinedClass(ctx, cp->classes))
            {
                for (const Rlist *rp = cp->rval.item; rp != NULL; rp = rp->next)
                {
                    /* The "roles" access promise currently only supports
                     * listing usernames to admit access to, nothing more. */
                    struct resource_acl *racl = &roles_acl->acls[pos];
                    size_t zret = StrList_Append(&racl->admit.usernames,
                                                 RlistScalarValue(rp));
                    if (zret == (size_t) -1)
                    {
                        /* Should never happen, besides when allocation fails. */
                        Log(LOG_LEVEL_CRIT, "StrList_Append: %s", GetErrorStr());
                        exit(255);
                    }
                }
            }
        }
        else if (strcmp(cp->lval, "comment") != 0 &&
                 strcmp(cp->lval, "handle") != 0 &&
                 /* Are there other known list constraints ? if not, skip this: */
                 cp->rval.type != RVAL_TYPE_LIST)
        {
            Log(LOG_LEVEL_WARNING,
                "Unrecognised promise '%s' for %s",
                cp->lval, pp->promiser);
        }
    }
}

PromiseResult ExpandPromise(EvalContext *ctx, const Promise *pp,
                            PromiseActuator *ActOnPromise, void *param)
{
    Log(LOG_LEVEL_VERBOSE, "Evaluating promise '%s'", pp->promiser);
    if (!IsDefinedClass(ctx, pp->classes))
    {
        if (LEGACY_OUTPUT)
        {
            Log(LOG_LEVEL_VERBOSE, ". . . . . . . . . . . . . . . . . . . . . . . . . . . . ");
            Log(LOG_LEVEL_VERBOSE, "Skipping whole next promise (%s), as context %s is not relevant", pp->promiser,
                  pp->classes);
            Log(LOG_LEVEL_VERBOSE, ". . . . . . . . . . . . . . . . . . . . . . . . . . . . ");
        }
        else
        {
            Log(LOG_LEVEL_VERBOSE, "Skipping next promise '%s', as context '%s' is not relevant", pp->promiser, pp->classes);
        }
        return PROMISE_RESULT_SKIPPED;
    }

    Rlist *lists = NULL;
    Rlist *scalars = NULL;
    Rlist *containers = NULL;

    Promise *pcopy = DeRefCopyPromise(ctx, pp);

    MapIteratorsFromRval(ctx, PromiseGetBundle(pp), (Rval) { pcopy->promiser, RVAL_TYPE_SCALAR }, &scalars, &lists, &containers);

    if (pcopy->promisee.item != NULL)
    {
        MapIteratorsFromRval(ctx, PromiseGetBundle(pp), pp->promisee, &scalars, &lists, &containers);
    }

    for (size_t i = 0; i < SeqLength(pcopy->conlist); i++)
    {
        Constraint *cp = SeqAt(pcopy->conlist, i);
        MapIteratorsFromRval(ctx, PromiseGetBundle(pp), cp->rval, &scalars, &lists, &containers);
    }

    CopyLocalizedReferencesToBundleScope(ctx, PromiseGetBundle(pp), lists);
    CopyLocalizedReferencesToBundleScope(ctx, PromiseGetBundle(pp), scalars);
    CopyLocalizedReferencesToBundleScope(ctx, PromiseGetBundle(pp), containers);

    PromiseResult result = ExpandPromiseAndDo(ctx, pcopy, lists, containers, ActOnPromise, param);

    PromiseDestroy(pcopy);

    RlistDestroy(lists);
    RlistDestroy(scalars);
    RlistDestroy(containers);

    return result;
}

static void KeepServerRolePromise(EvalContext *ctx, Promise *pp)
{
    Rlist *rp;
    Auth *ap;

    if (!GetAuthPath(pp->promiser, SV.roles))
    {
        InstallServerAuthPath(pp->promiser, &SV.roles, &SV.rolestop);
    }

    ap = GetAuthPath(pp->promiser, SV.roles);

    for (size_t i = 0; i < SeqLength(pp->conlist); i++)
    {
        Constraint *cp = SeqAt(pp->conlist, i);

        if (!IsDefinedClass(ctx, cp->classes, PromiseGetNamespace(pp)))
        {
            continue;
        }

        switch (cp->rval.type)
        {
        case RVAL_TYPE_LIST:

            for (rp = (Rlist *) cp->rval.item; rp != NULL; rp = rp->next)
            {
                if (strcmp(cp->lval, CF_REMROLE_BODIES[REMOTE_ROLE_AUTHORIZE].lval) == 0)
                {
                    PrependItem(&(ap->accesslist), rp->item, NULL);
                    continue;
                }
            }
            break;

        case RVAL_TYPE_FNCALL:
            /* Shouldn't happen */
            break;

        default:

            if ((strcmp(cp->lval, "comment") == 0) || (strcmp(cp->lval, "handle") == 0))
            {
            }
            else
            {
                Log(LOG_LEVEL_ERR, "Right-hand side of authorize promise for '%s' should be a list", pp->promiser);
            }
            break;
        }
    }
}

static void UpdateDistributions(EvalContext *ctx, char *timekey, Averages *av)
{
    int position, day, i;
    char filename[CF_BUFSIZE];
    FILE *fp;

/* Take an interval of 4 standard deviations from -2 to +2, divided into CF_GRAINS
   parts. Centre each measurement on CF_GRAINS/2 and scale each measurement by the
   std-deviation for the current time.
*/

    if (IsDefinedClass(ctx, "Min40_45", NULL))
    {
        day = Day2Number(timekey);

        for (i = 0; i < CF_OBSERVABLES; i++)
        {
            position =
                CF_GRAINS / 2 + (int) (0.5 + (CF_THIS[i] - av->Q[i].expect) * CF_GRAINS / (4 * sqrt((av->Q[i].var))));

            if ((0 <= position) && (position < CF_GRAINS))
            {
                HISTOGRAM[i][day][position]++;
            }
        }

        snprintf(filename, CF_BUFSIZE, "%s/state/histograms", CFWORKDIR);

        if ((fp = fopen(filename, "w")) == NULL)
        {
            Log(LOG_LEVEL_ERR, "Unable to save histograms. (fopen: %s)", GetErrorStr());
            return;
        }

        for (position = 0; position < CF_GRAINS; position++)
        {
            fprintf(fp, "%d ", position);

            for (i = 0; i < CF_OBSERVABLES; i++)
            {
                for (day = 0; day < 7; day++)
                {
                    fprintf(fp, "%.0lf ", HISTOGRAM[i][day][position]);
                }
            }
            fprintf(fp, "\n");
        }

        fclose(fp);
    }
}

static void KeepServerRolePromise(Promise *pp)
{
    Constraint *cp;
    Rlist *rp;
    Auth *ap;

    if (!GetAuthPath(pp->promiser, ROLES))
    {
        InstallServerAuthPath(pp->promiser, &ROLES, &ROLESTOP);
    }

    ap = GetAuthPath(pp->promiser, ROLES);

    for (cp = pp->conlist; cp != NULL; cp = cp->next)
    {
        if (!IsDefinedClass(cp->classes))
        {
            continue;
        }

        switch (cp->rval.rtype)
        {
        case CF_LIST:

            for (rp = (Rlist *) cp->rval.item; rp != NULL; rp = rp->next)
            {
                if (strcmp(cp->lval, CF_REMROLE_BODIES[cfs_authorize].lval) == 0)
                {
                    PrependItem(&(ap->accesslist), rp->item, NULL);
                    continue;
                }
            }
            break;

        case CF_FNCALL:
            /* Shouldn't happen */
            break;

        default:

            if (strcmp(cp->lval, "comment") == 0 || strcmp(cp->lval, "handle") == 0)
            {
            }
            else
            {
                CfOut(cf_error, "", "RHS of authorize promise for %s should be a list\n", pp->promiser);
            }
            break;
        }
    }
}

static void ResolvePackageManagerBody(EvalContext *ctx, const Body *pm_body)
{
    PackageModuleBody *new_manager = xcalloc(1, sizeof(PackageModuleBody));
    new_manager->name = SafeStringDuplicate(pm_body->name);

    for (size_t i = 0; i < SeqLength(pm_body->conlist); i++)
    {
        Constraint *cp = SeqAt(pm_body->conlist, i);

        Rval returnval = {0};

        if (IsDefinedClass(ctx, cp->classes))
        {
            returnval = ExpandPrivateRval(ctx, NULL, "body",
                                          cp->rval.item, cp->rval.type);
        }

        if (returnval.item == NULL || returnval.type == RVAL_TYPE_NOPROMISEE)
        {
            Log(LOG_LEVEL_VERBOSE, "have invalid constraint while resolving"
                    "package promise body: %s", cp->lval);

            RvalDestroy(returnval);
            continue;
        }

        if (strcmp(cp->lval, "query_installed_ifelapsed") == 0)
        {
            new_manager->installed_ifelapsed =
                    (int)IntFromString(RvalScalarValue(returnval));
        }
        else if (strcmp(cp->lval, "query_updates_ifelapsed") == 0)
        {
            new_manager->updates_ifelapsed =
                    (int)IntFromString(RvalScalarValue(returnval));
        }
        else if (strcmp(cp->lval, "default_options") == 0)
        {
            new_manager->options = RlistCopy(RvalRlistValue(returnval));
        }
        else
        {
            /* This should be handled by the parser. */
            assert(0);
        }
        RvalDestroy(returnval);
    }
    AddPackageModuleToContext(ctx, new_manager);
}

static void KeepServerRolePromise(EvalContext *ctx, const Promise *pp)
{
    Rlist *rp;
    Auth *ap;

    ap = GetOrCreateAuth(pp->promiser, &SV.roles, &SV.rolestail);

    for (size_t i = 0; i < SeqLength(pp->conlist); i++)
    {
        Constraint *cp = SeqAt(pp->conlist, i);

        if (!IsDefinedClass(ctx, cp->classes))
        {
            continue;
        }

        switch (cp->rval.type)
        {
        case RVAL_TYPE_LIST:

            for (rp = (Rlist *) cp->rval.item; rp != NULL; rp = rp->next)
            {
                /* This is for remote class activation by means of cf-runagent.*/
                if (strcmp(cp->lval, CF_REMROLE_BODIES[REMOTE_ROLE_AUTHORIZE].lval) == 0)
                {
                    PrependItem(&(ap->accesslist), RlistScalarValue(rp), NULL);
                    continue;
                }
            }
            break;

        case RVAL_TYPE_FNCALL:
            UnexpectedError("Constraint of type FNCALL is invalid in this context!");
            break;

        default:

            if ((strcmp(cp->lval, "comment") == 0) || (strcmp(cp->lval, "handle") == 0))
            {
            }
            else
            {
                Log(LOG_LEVEL_ERR, "Right-hand side of authorize promise for '%s' should be a list", pp->promiser);
            }
            break;
        }
    }
}