Exemple #1
0
static void KeepPromiseBundles(EvalContext *ctx, Policy *policy, const ReportContext *report_context)
{
/* Dial up the generic promise expansion with a callback */

    for (size_t i = 0; i < SeqLength(policy->bundles); i++)
    {
        Bundle *bp = SeqAt(policy->bundles, i);

        if ((strcmp(bp->type, CF_AGENTTYPES[AGENT_TYPE_SERVER]) == 0) || (strcmp(bp->type, CF_AGENTTYPES[AGENT_TYPE_COMMON]) == 0))
        {
            if (RlistLen(bp->args) > 0)
            {
                CfOut(OUTPUT_LEVEL_ERROR, "", "Cannot implicitly evaluate bundle %s %s, as this bundle takes arguments.", bp->type, bp->name);
                continue;
            }

            BannerBundle(bp, NULL);

            for (size_t j = 0; j < SeqLength(bp->promise_types); j++)
            {
                PromiseType *sp = SeqAt(bp->promise_types, j);

                if ((strcmp(sp->name, "access") != 0) && (strcmp(sp->name, "roles") != 0))
                {
                    continue;
                }

                BannerPromiseType(bp->name, sp->name, 0);

                EvalContextStackPushBundleFrame(ctx, bp, false);
                ScopeAugment(ctx, bp, NULL);

                for (size_t ppi = 0; ppi < SeqLength(sp->promises); ppi++)
                {
                    Promise *pp = SeqAt(sp->promises, ppi);
                    ExpandPromise(ctx, pp, KeepServerPromise, report_context);
                }

                EvalContextStackPopFrame(ctx);
            }
        }
    }
}
Exemple #2
0
int VerifyMethod(EvalContext *ctx, char *attrname, Attributes a, Promise *pp)
{
    Bundle *bp;
    void *vp;
    FnCall *fp;
    char method_name[CF_EXPANDSIZE], qualified_method[CF_BUFSIZE], *method_deref;
    Rlist *params = NULL;
    int retval = false;
    CfLock thislock;
    char lockname[CF_BUFSIZE];

    if (a.havebundle)
    {
        if ((vp = ConstraintGetRvalValue(ctx, attrname, pp, RVAL_TYPE_FNCALL)))
        {
            fp = (FnCall *) vp;
            ExpandScalar(ctx, PromiseGetBundle(pp)->name, fp->name, method_name);
            params = fp->args;
        }
        else if ((vp = ConstraintGetRvalValue(ctx, attrname, pp, RVAL_TYPE_SCALAR)))
        {
            ExpandScalar(ctx, PromiseGetBundle(pp)->name, (char *) vp, method_name);
            params = NULL;
        }
        else
        {
            return false;
        }
    }

    GetLockName(lockname, "method", pp->promiser, params);

    thislock = AcquireLock(ctx, lockname, VUQNAME, CFSTARTTIME, a.transaction, pp, false);

    if (thislock.lock == NULL)
    {
        return false;
    }

    PromiseBanner(pp);

    if (strncmp(method_name,"default:",strlen("default:")) == 0) // CF_NS == ':'
    {
        method_deref = strchr(method_name, CF_NS) + 1;
    }
    else if ((strchr(method_name, CF_NS) == NULL) && (strcmp(PromiseGetNamespace(pp), "default") != 0))
    {
        snprintf(qualified_method, CF_BUFSIZE, "%s%c%s", PromiseGetNamespace(pp), CF_NS, method_name);
        method_deref = qualified_method;
    }
    else
    {
         method_deref = method_name;
    }
    
    bp = PolicyGetBundle(PolicyFromPromise(pp), NULL, "agent", method_deref);
    if (!bp)
    {
        bp = PolicyGetBundle(PolicyFromPromise(pp), NULL, "common", method_deref);
    }

    if (bp)
    {
        BannerSubBundle(bp, params);

        EvalContextStackPushBundleFrame(ctx, bp, a.inherit);

        ScopeClear(bp->name);
        BundleHashVariables(ctx, bp);

        ScopeAugment(ctx, bp, pp, params);

        retval = ScheduleAgentOperations(ctx, bp);

        GetReturnValue(ctx, bp->name, pp);

        EvalContextStackPopFrame(ctx);

        switch (retval)
        {
        case PROMISE_RESULT_FAIL:
            cfPS(ctx, LOG_LEVEL_INFO, PROMISE_RESULT_FAIL, pp, a, "Method failed in some repairs or aborted");
            break;

        case PROMISE_RESULT_CHANGE:
            cfPS(ctx, LOG_LEVEL_VERBOSE, PROMISE_RESULT_CHANGE, pp, a, "Method invoked repairs");
            break;

        default:
            cfPS(ctx, LOG_LEVEL_VERBOSE, PROMISE_RESULT_NOOP, pp, a, "Method verified");
            break;

        }

        for (const Rlist *rp = bp->args; rp; rp = rp->next)
        {
            const char *lval = rp->item;
            ScopeDeleteScalar((VarRef) { NULL, bp->name, lval });
        }
    }
    else
    {
        if (IsCf3VarString(method_name))
        {
            Log(LOG_LEVEL_ERR,
                  "A variable seems to have been used for the name of the method. In this case, the promiser also needs to contain the unique name of the method");
        }
        if (bp && (bp->name))
        {
            cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, a, "Method '%s' was used but was not defined", bp->name);
        }
        else
        {
            cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, a,
                 "A method attempted to use a bundle '%s' that was apparently not defined", method_name);
        }
    }

    
    YieldCurrentLock(thislock);
    return retval;
}