source: mainline/uspace/srv/net/inetsrv/inetcfg.c@ 9aa51406

/*
 * Copyright (c) 2024 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup inet
 * @{
 */
/**
 * @file
 * @brief
 */

#include <async.h>
#include <errno.h>
#include <macros.h>
#include <io/log.h>
#include <ipc/inet.h>
#include <loc.h>
#include <stdlib.h>
#include <str.h>
#include <stddef.h>
#include <types/inetcfg.h>

#include "addrobj.h"
#include "inetsrv.h"
#include "inet_link.h"
#include "inetcfg.h"
#include "sroute.h"

static errno_t inetcfg_addr_create_static(char *name, inet_naddr_t *naddr,
    sysarg_t link_id, sysarg_t *addr_id)
{
        inet_link_t *ilink;
        inet_addrobj_t *addr;
        inet_addr_t iaddr;
        errno_t rc;

        ilink = inet_link_get_by_id(link_id);
        if (ilink == NULL) {
                log_msg(LOG_DEFAULT, LVL_DEBUG, "Link %lu not found.",
                    (unsigned long) link_id);
                return ENOENT;
        }

        addr = inet_addrobj_new();
        if (addr == NULL) {
                *addr_id = 0;
                return ENOMEM;
        }

        addr->naddr = *naddr;
        addr->ilink = ilink;
        addr->name = str_dup(name);
        rc = inet_addrobj_add(addr);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_DEBUG, "Duplicate address name '%s'.", addr->name);
                inet_addrobj_delete(addr);
                return rc;
        }

        inet_naddr_addr(&addr->naddr, &iaddr);
        rc = iplink_addr_add(ilink->iplink, &iaddr);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Failed setting IP address on internet link.");
                inet_addrobj_remove(addr);
                inet_addrobj_delete(addr);
                return rc;
        }

        rc = inet_cfg_sync(cfg);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error saving configuration.");
                return rc;
        }

        return EOK;
}

static errno_t inetcfg_addr_delete(sysarg_t addr_id)
{
        inet_addrobj_t *addr;
        inet_link_cfg_info_t info;
        unsigned acnt;
        inet_link_t *ilink;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_NOTE, "inetcfg_addr_delete()");

        addr = inet_addrobj_get_by_id(addr_id);
        if (addr == NULL)
                return ENOENT;

        info.svc_id = addr->ilink->svc_id;
        info.svc_name = str_dup(addr->ilink->svc_name);
        if (info.svc_name == NULL)
                return ENOMEM;

        inet_addrobj_remove(addr);
        inet_addrobj_delete(addr);

        log_msg(LOG_DEFAULT, LVL_NOTE, "inetcfg_addr_delete(): sync");

        rc = inet_cfg_sync(cfg);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error saving configuration.");
                free(info.svc_name);
                return rc;
        }

        log_msg(LOG_DEFAULT, LVL_NOTE, "inetcfg_addr_delete(): get link by ID");

        ilink = inet_link_get_by_id(info.svc_id);
        if (ilink == NULL) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error finding link.");
                return ENOENT;
        }

        log_msg(LOG_DEFAULT, LVL_NOTE, "inetcfg_addr_delete(): check addrobj count");

        /* If there are no configured addresses left, autoconfigure link */
        acnt = inet_addrobj_cnt_by_link(ilink);
        log_msg(LOG_DEFAULT, LVL_NOTE, "inetcfg_addr_delete(): acnt=%u", acnt);
        if (acnt == 0)
                inet_link_autoconf_link(&info);

        log_msg(LOG_DEFAULT, LVL_NOTE, "inetcfg_addr_delete(): DONE");
        return EOK;
}

static errno_t inetcfg_addr_get(sysarg_t addr_id, inet_addr_info_t *ainfo)
{
        inet_addrobj_t *addr;

        addr = inet_addrobj_get_by_id(addr_id);
        if (addr == NULL)
                return ENOENT;

        ainfo->naddr = addr->naddr;
        ainfo->ilink = addr->ilink->svc_id;
        ainfo->name = str_dup(addr->name);

        return EOK;
}

static errno_t inetcfg_addr_get_id(char *name, sysarg_t link_id, sysarg_t *addr_id)
{
        inet_link_t *ilink;
        inet_addrobj_t *addr;

        ilink = inet_link_get_by_id(link_id);
        if (ilink == NULL) {
                log_msg(LOG_DEFAULT, LVL_DEBUG, "Link %zu not found.", (size_t) link_id);
                return ENOENT;
        }

        addr = inet_addrobj_find_by_name(name, ilink);
        if (addr == NULL) {
                log_msg(LOG_DEFAULT, LVL_DEBUG, "Address '%s' not found.", name);
                return ENOENT;
        }

        *addr_id = addr->id;
        return EOK;
}

static errno_t inetcfg_get_addr_list(sysarg_t **addrs, size_t *count)
{
        return inet_addrobj_get_id_list(addrs, count);
}

static errno_t inetcfg_get_link_list(sysarg_t **addrs, size_t *count)
{
        return inet_link_get_id_list(addrs, count);
}

static errno_t inetcfg_get_sroute_list(sysarg_t **sroutes, size_t *count)
{
        return inet_sroute_get_id_list(sroutes, count);
}

static errno_t inetcfg_link_add(sysarg_t link_id)
{
        return inet_link_open(link_id);
}

static errno_t inetcfg_link_get(sysarg_t link_id, inet_link_info_t *linfo)
{
        inet_link_t *ilink;

        ilink = inet_link_get_by_id(link_id);
        if (ilink == NULL) {
                return ENOENT;
        }

        linfo->name = str_dup(ilink->svc_name);
        linfo->def_mtu = ilink->def_mtu;
        if (ilink->mac_valid) {
                linfo->mac_addr = ilink->mac;
        } else {
                memset(&linfo->mac_addr, 0, sizeof(linfo->mac_addr));
        }

        return EOK;
}

static errno_t inetcfg_link_remove(sysarg_t link_id)
{
        return ENOTSUP;
}

static errno_t inetcfg_sroute_create(char *name, inet_naddr_t *dest,
    inet_addr_t *router, sysarg_t *sroute_id)
{
        errno_t rc;
        inet_sroute_t *sroute;

        sroute = inet_sroute_new();
        if (sroute == NULL) {
                *sroute_id = 0;
                return ENOMEM;
        }

        sroute->dest = *dest;
        sroute->router = *router;
        sroute->name = str_dup(name);
        inet_sroute_add(sroute);

        *sroute_id = sroute->id;

        rc = inet_cfg_sync(cfg);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error saving configuration.");
                return rc;
        }

        return EOK;
}

static errno_t inetcfg_sroute_delete(sysarg_t sroute_id)
{
        errno_t rc;
        inet_sroute_t *sroute;

        sroute = inet_sroute_get_by_id(sroute_id);
        if (sroute == NULL)
                return ENOENT;

        inet_sroute_remove(sroute);
        inet_sroute_delete(sroute);

        rc = inet_cfg_sync(cfg);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_ERROR, "Error saving configuration.");
                return rc;
        }

        return EOK;
}

static errno_t inetcfg_sroute_get(sysarg_t sroute_id, inet_sroute_info_t *srinfo)
{
        inet_sroute_t *sroute;

        sroute = inet_sroute_get_by_id(sroute_id);
        if (sroute == NULL)
                return ENOENT;

        srinfo->dest = sroute->dest;
        srinfo->router = sroute->router;
        srinfo->name = str_dup(sroute->name);

        return EOK;
}

static errno_t inetcfg_sroute_get_id(char *name, sysarg_t *sroute_id)
{
        inet_sroute_t *sroute;

        sroute = inet_sroute_find_by_name(name);
        if (sroute == NULL) {
                log_msg(LOG_DEFAULT, LVL_DEBUG, "Static route '%s' not found.", name);
                return ENOENT;
        }

        *sroute_id = sroute->id;
        return EOK;
}

static void inetcfg_addr_create_static_srv(ipc_call_t *icall)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_addr_create_static_srv()");

        sysarg_t link_id = ipc_get_arg1(icall);

        ipc_call_t call;
        size_t size;
        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        if (size != sizeof(inet_naddr_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        inet_naddr_t naddr;
        errno_t rc = async_data_write_finalize(&call, &naddr, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        char *name;
        rc = async_data_write_accept((void **) &name, true, 0, LOC_NAME_MAXLEN,
            0, NULL);
        if (rc != EOK) {
                async_answer_0(icall, rc);
                return;
        }

        sysarg_t addr_id = 0;
        rc = inetcfg_addr_create_static(name, &naddr, link_id, &addr_id);
        free(name);
        async_answer_1(icall, rc, addr_id);
}

static void inetcfg_addr_delete_srv(ipc_call_t *call)
{
        sysarg_t addr_id;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_addr_delete_srv()");

        addr_id = ipc_get_arg1(call);

        rc = inetcfg_addr_delete(addr_id);
        async_answer_0(call, rc);
}

static void inetcfg_addr_get_srv(ipc_call_t *icall)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_addr_get_srv()");

        sysarg_t addr_id = ipc_get_arg1(icall);

        inet_addr_info_t ainfo;

        inet_naddr_any(&ainfo.naddr);
        ainfo.ilink = 0;
        ainfo.name = NULL;

        errno_t rc = inetcfg_addr_get(addr_id, &ainfo);
        if (rc != EOK) {
                async_answer_0(icall, rc);
                return;
        }

        ipc_call_t call;
        size_t size;
        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(inet_naddr_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_read_finalize(&call, &ainfo.naddr, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        rc = async_data_read_finalize(&call, ainfo.name,
            min(size, str_size(ainfo.name)));
        free(ainfo.name);

        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        async_answer_1(icall, rc, ainfo.ilink);
}

static void inetcfg_addr_get_id_srv(ipc_call_t *call)
{
        char *name;
        sysarg_t link_id;
        sysarg_t addr_id;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_addr_get_id_srv()");

        link_id = ipc_get_arg1(call);

        rc = async_data_write_accept((void **) &name, true, 0, LOC_NAME_MAXLEN,
            0, NULL);
        if (rc != EOK) {
                async_answer_0(call, rc);
                return;
        }

        addr_id = 0;
        rc = inetcfg_addr_get_id(name, link_id, &addr_id);
        free(name);
        async_answer_1(call, rc, addr_id);
}

static void inetcfg_get_addr_list_srv(ipc_call_t *call)
{
        ipc_call_t rcall;
        size_t count;
        size_t max_size;
        size_t act_size;
        size_t size;
        sysarg_t *id_buf;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_get_addr_list_srv()");

        if (!async_data_read_receive(&rcall, &max_size)) {
                async_answer_0(&rcall, EREFUSED);
                async_answer_0(call, EREFUSED);
                return;
        }

        rc = inetcfg_get_addr_list(&id_buf, &count);
        if (rc != EOK) {
                async_answer_0(&rcall, rc);
                async_answer_0(call, rc);
                return;
        }

        act_size = count * sizeof(sysarg_t);
        size = min(act_size, max_size);

        errno_t retval = async_data_read_finalize(&rcall, id_buf, size);
        free(id_buf);

        async_answer_1(call, retval, act_size);
}

static void inetcfg_get_link_list_srv(ipc_call_t *call)
{
        ipc_call_t rcall;
        size_t count;
        size_t max_size;
        size_t act_size;
        size_t size;
        sysarg_t *id_buf;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_get_addr_list_srv()");

        if (!async_data_read_receive(&rcall, &max_size)) {
                async_answer_0(&rcall, EREFUSED);
                async_answer_0(call, EREFUSED);
                return;
        }

        rc = inetcfg_get_link_list(&id_buf, &count);
        if (rc != EOK) {
                async_answer_0(&rcall, rc);
                async_answer_0(call, rc);
                return;
        }

        act_size = count * sizeof(sysarg_t);
        size = min(act_size, max_size);

        errno_t retval = async_data_read_finalize(&rcall, id_buf, size);
        free(id_buf);

        async_answer_1(call, retval, act_size);
}

static void inetcfg_get_sroute_list_srv(ipc_call_t *call)
{
        ipc_call_t rcall;
        size_t count;
        size_t max_size;
        size_t act_size;
        size_t size;
        sysarg_t *id_buf;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_get_sroute_list_srv()");

        if (!async_data_read_receive(&rcall, &max_size)) {
                async_answer_0(&rcall, EREFUSED);
                async_answer_0(call, EREFUSED);
                return;
        }

        rc = inetcfg_get_sroute_list(&id_buf, &count);
        if (rc != EOK) {
                async_answer_0(&rcall, rc);
                async_answer_0(call, rc);
                return;
        }

        act_size = count * sizeof(sysarg_t);
        size = min(act_size, max_size);

        errno_t retval = async_data_read_finalize(&rcall, id_buf, size);
        free(id_buf);

        async_answer_1(call, retval, act_size);
}

static void inetcfg_link_add_srv(ipc_call_t *call)
{
        sysarg_t link_id;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_link_add_srv()");

        link_id = ipc_get_arg1(call);

        rc = inetcfg_link_add(link_id);
        async_answer_0(call, rc);
}

static void inetcfg_link_get_srv(ipc_call_t *call)
{
        ipc_call_t name;
        ipc_call_t laddr;
        size_t name_max_size;
        size_t laddr_max_size;

        sysarg_t link_id;
        inet_link_info_t linfo;
        errno_t rc;

        link_id = ipc_get_arg1(call);
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_link_get_srv()");

        linfo.name = NULL;

        if (!async_data_read_receive(&name, &name_max_size)) {
                async_answer_0(&name, EREFUSED);
                async_answer_0(call, EREFUSED);
                return;
        }

        if (!async_data_read_receive(&laddr, &laddr_max_size)) {
                async_answer_0(&laddr, EREFUSED);
                async_answer_0(&name, EREFUSED);
                async_answer_0(call, EREFUSED);
                return;
        }

        rc = inetcfg_link_get(link_id, &linfo);
        if (rc != EOK) {
                async_answer_0(&laddr, rc);
                async_answer_0(&name, rc);
                async_answer_0(call, rc);
                return;
        }

        errno_t retval = async_data_read_finalize(&name, linfo.name,
            min(name_max_size, str_size(linfo.name)));
        if (retval != EOK) {
                free(linfo.name);
                async_answer_0(&laddr, retval);
                async_answer_0(call, retval);
                return;
        }

        retval = async_data_read_finalize(&laddr, &linfo.mac_addr,
            min(laddr_max_size, sizeof(linfo.mac_addr)));

        free(linfo.name);

        async_answer_1(call, retval, linfo.def_mtu);
}

static void inetcfg_link_remove_srv(ipc_call_t *call)
{
        sysarg_t link_id;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_link_remove_srv()");

        link_id = ipc_get_arg1(call);

        rc = inetcfg_link_remove(link_id);
        async_answer_0(call, rc);
}

static void inetcfg_sroute_create_srv(ipc_call_t *icall)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_sroute_create_srv()");

        ipc_call_t call;
        size_t size;
        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        if (size != sizeof(inet_naddr_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        inet_naddr_t dest;
        errno_t rc = async_data_write_finalize(&call, &dest, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        if (size != sizeof(inet_addr_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        inet_addr_t router;
        rc = async_data_write_finalize(&call, &router, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        char *name;
        rc = async_data_write_accept((void **) &name, true, 0, LOC_NAME_MAXLEN,
            0, NULL);
        if (rc != EOK) {
                async_answer_0(icall, rc);
                return;
        }

        sysarg_t sroute_id = 0;
        rc = inetcfg_sroute_create(name, &dest, &router, &sroute_id);
        free(name);
        async_answer_1(icall, rc, sroute_id);
}

static void inetcfg_sroute_delete_srv(ipc_call_t *call)
{
        sysarg_t sroute_id;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_sroute_delete_srv()");

        sroute_id = ipc_get_arg1(call);

        rc = inetcfg_sroute_delete(sroute_id);
        async_answer_0(call, rc);
}

static void inetcfg_sroute_get_srv(ipc_call_t *icall)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_sroute_get_srv()");

        sysarg_t sroute_id = ipc_get_arg1(icall);

        inet_sroute_info_t srinfo;

        inet_naddr_any(&srinfo.dest);
        inet_addr_any(&srinfo.router);
        srinfo.name = NULL;

        errno_t rc = inetcfg_sroute_get(sroute_id, &srinfo);
        if (rc != EOK) {
                async_answer_0(icall, rc);
                return;
        }

        ipc_call_t call;
        size_t size;
        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(inet_naddr_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_read_finalize(&call, &srinfo.dest, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(inet_addr_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_read_finalize(&call, &srinfo.router, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        rc = async_data_read_finalize(&call, srinfo.name,
            min(size, str_size(srinfo.name)));
        free(srinfo.name);

        async_answer_0(icall, rc);
}

static void inetcfg_sroute_get_id_srv(ipc_call_t *call)
{
        char *name;
        sysarg_t sroute_id;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_sroute_get_id_srv()");

        rc = async_data_write_accept((void **) &name, true, 0, LOC_NAME_MAXLEN,
            0, NULL);
        if (rc != EOK) {
                async_answer_0(call, rc);
                return;
        }

        sroute_id = 0;
        rc = inetcfg_sroute_get_id(name, &sroute_id);
        free(name);
        async_answer_1(call, rc, sroute_id);
}

void inet_cfg_conn(ipc_call_t *icall, void *arg)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inet_cfg_conn()");

        /* Accept the connection */
        async_accept_0(icall);

        while (true) {
                ipc_call_t call;
                async_get_call(&call);
                sysarg_t method = ipc_get_imethod(&call);

                log_msg(LOG_DEFAULT, LVL_DEBUG, "method %d", (int)method);
                if (!method) {
                        /* The other side has hung up */
                        async_answer_0(&call, EOK);
                        return;
                }

                switch (method) {
                case INETCFG_ADDR_CREATE_STATIC:
                        inetcfg_addr_create_static_srv(&call);
                        break;
                case INETCFG_ADDR_DELETE:
                        inetcfg_addr_delete_srv(&call);
                        break;
                case INETCFG_ADDR_GET:
                        inetcfg_addr_get_srv(&call);
                        break;
                case INETCFG_ADDR_GET_ID:
                        inetcfg_addr_get_id_srv(&call);
                        break;
                case INETCFG_GET_ADDR_LIST:
                        inetcfg_get_addr_list_srv(&call);
                        break;
                case INETCFG_GET_LINK_LIST:
                        inetcfg_get_link_list_srv(&call);
                        break;
                case INETCFG_GET_SROUTE_LIST:
                        inetcfg_get_sroute_list_srv(&call);
                        break;
                case INETCFG_LINK_ADD:
                        inetcfg_link_add_srv(&call);
                        break;
                case INETCFG_LINK_GET:
                        inetcfg_link_get_srv(&call);
                        break;
                case INETCFG_LINK_REMOVE:
                        inetcfg_link_remove_srv(&call);
                        break;
                case INETCFG_SROUTE_CREATE:
                        inetcfg_sroute_create_srv(&call);
                        break;
                case INETCFG_SROUTE_DELETE:
                        inetcfg_sroute_delete_srv(&call);
                        break;
                case INETCFG_SROUTE_GET:
                        inetcfg_sroute_get_srv(&call);
                        break;
                case INETCFG_SROUTE_GET_ID:
                        inetcfg_sroute_get_id_srv(&call);
                        break;
                default:
                        async_answer_0(&call, EINVAL);
                }
        }
}

static errno_t inet_cfg_load(const char *cfg_path)
{
        sif_doc_t *doc = NULL;
        sif_node_t *rnode;
        sif_node_t *naddrs;
        sif_node_t *nroutes;
        const char *ntype;
        errno_t rc;

        rc = sif_load(cfg_path, &doc);
        if (rc != EOK)
                goto error;

        rnode = sif_get_root(doc);
        naddrs = sif_node_first_child(rnode);
        ntype = sif_node_get_type(naddrs);
        if (str_cmp(ntype, "addresses") != 0) {
                rc = EIO;
                goto error;
        }

        rc = inet_addrobjs_load(naddrs);
        if (rc != EOK)
                goto error;

        nroutes = sif_node_next_child(naddrs);
        ntype = sif_node_get_type(nroutes);
        if (str_cmp(ntype, "static-routes") != 0) {
                rc = EIO;
                goto error;
        }

        rc = inet_sroutes_load(nroutes);
        if (rc != EOK)
                goto error;

        sif_delete(doc);
        return EOK;
error:
        if (doc != NULL)
                sif_delete(doc);
        return rc;

}

static errno_t inet_cfg_save(const char *cfg_path)
{
        sif_doc_t *doc = NULL;
        sif_node_t *rnode;
        sif_node_t *nsroutes;
        sif_node_t *naddrobjs;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_NOTE, "inet_cfg_save(%s)", cfg_path);

        rc = sif_new(&doc);
        if (rc != EOK)
                goto error;

        rnode = sif_get_root(doc);

        /* Address objects */

        rc = sif_node_append_child(rnode, "addresses", &naddrobjs);
        if (rc != EOK)
                goto error;

        rc = inet_addrobjs_save(naddrobjs);
        if (rc != EOK)
                goto error;

        /* Static routes */

        rc = sif_node_append_child(rnode, "static-routes", &nsroutes);
        if (rc != EOK)
                goto error;

        rc = inet_sroutes_save(nsroutes);
        if (rc != EOK)
                goto error;

        /* Save */

        rc = sif_save(doc, cfg_path);
        if (rc != EOK)
                goto error;

        sif_delete(doc);
        return EOK;
error:
        if (doc != NULL)
                sif_delete(doc);
        return rc;
}

/** Open internet server configuration.
 *
 * @param cfg_path Configuration file path
 * @param rcfg Place to store pointer to configuration object
 * @return EOK on success or an error code
 */
errno_t inet_cfg_open(const char *cfg_path, inet_cfg_t **rcfg)
{
        inet_cfg_t *cfg;
        errno_t rc;

        log_msg(LOG_DEFAULT, LVL_DEBUG, "inet_cfg_open(%s)", cfg_path);

        rc = inet_cfg_load(cfg_path);
        if (rc != EOK) {
                log_msg(LOG_DEFAULT, LVL_WARN, "inet_cfg_open(%s) :"
                    "could not load configuration.", cfg_path);
        }

        cfg = calloc(1, sizeof(inet_cfg_t));
        if (cfg == NULL)
                return ENOMEM;

        cfg->cfg_path = str_dup(cfg_path);
        if (cfg->cfg_path == NULL) {
                free(cfg);
                return ENOMEM;
        }

        *rcfg = cfg;
        return EOK;
}

errno_t inet_cfg_sync(inet_cfg_t *cfg)
{
        log_msg(LOG_DEFAULT, LVL_NOTE, "inet_cfg_sync(cfg=%p)", cfg);
        return inet_cfg_save(cfg->cfg_path);
}

void inet_cfg_close(inet_cfg_t *cfg)
{
        free(cfg);
}

/** @}
 */