open62541/examples/access_control/server_access_control.c

/* This work is licensed under a Creative Commons CCZero 1.0 Universal License.
 * See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */

#include <signal.h>
#include <stdio.h>

#include "open62541.h"

static UA_Boolean
allowAddNode(const UA_NodeId *sessionId, void *sessionContext,
    const UA_AddNodesItem *item)
{
    printf("Called allowAddNode\n");
    return UA_TRUE;
}

static UA_Boolean
allowAddReference(const UA_NodeId *sessionId, void *sessionContext,
    const UA_AddReferencesItem *item)
{
    printf("Called allowAddReference\n");
    return UA_TRUE;
}

static UA_Boolean
allowDeleteNode(const UA_NodeId *sessionId, void *sessionContext,
    const UA_DeleteNodesItem *item)
{
    printf("Called allowDeleteNode\n");
    return UA_FALSE; // Do not allow deletion from client
}

static UA_Boolean
allowDeleteReference(const UA_NodeId *sessionId, void *sessionContext,
    const UA_DeleteReferencesItem *item)
{
    printf("Called allowDeleteReference\n");
    return UA_TRUE;
}

UA_Boolean running = true;
static void stopHandler(int sign) {
    UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, "received ctrl-c");
    running = false;
}

int main(void) {
    signal(SIGINT, stopHandler);
    signal(SIGTERM, stopHandler);

    UA_ServerConfig *config = UA_ServerConfig_new_default();

    // Set accessControl functions for nodeManagement
    config->accessControl.allowAddNode = allowAddNode;
    config->accessControl.allowAddReference = allowAddReference;
    config->accessControl.allowDeleteNode = allowDeleteNode;
    config->accessControl.allowDeleteReference = allowDeleteReference;

    UA_Server *server = UA_Server_new(config);

    UA_StatusCode retval = UA_Server_run(server, &running);
    UA_Server_delete(server);
    UA_ServerConfig_delete(config);
    return (int)retval;
}