source: mainline/uspace/srv/net/inetsrv/inetcfg.c@ 257feec

/*
 * Copyright (c) 2012 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 <sys/types.h>

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

static int 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;
        int 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;
        }

        return EOK;
}

static int inetcfg_addr_delete(sysarg_t addr_id)
{
        inet_addrobj_t *addr;

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

        inet_addrobj_remove(addr);
        inet_addrobj_delete(addr);

        return EOK;
}

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

static int inetcfg_get_link_list(sysarg_t **addrs, size_t *count)
{
        return ENOTSUP;
}

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

static int 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;
        return EOK;
}

static int inetcfg_sroute_create(char *name, inet_naddr_t *dest,
    inet_addr_t *router, sysarg_t *sroute_id)
{
        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;
        return EOK;
}

static int inetcfg_sroute_delete(sysarg_t sroute_id)
{
        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);

        return EOK;
}

static int 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 int 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_callid_t callid,
    ipc_call_t *call)
{
        char *name;
        inet_naddr_t naddr;
        sysarg_t link_id;
        sysarg_t addr_id;
        int rc;

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

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

        inet_naddr_unpack(IPC_GET_ARG1(*call), IPC_GET_ARG2(*call), &naddr);
        link_id = IPC_GET_ARG3(*call);

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

static void inetcfg_addr_delete_srv(ipc_callid_t callid, ipc_call_t *call)
{
        sysarg_t addr_id;
        int 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(callid, rc);
}

static void inetcfg_addr_get_srv(ipc_callid_t callid, ipc_call_t *call)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_addr_get_srv()");
        
        sysarg_t addr_id = IPC_GET_ARG1(*call);
        
        inet_addr_info_t ainfo;
        
        inet_naddr_any(&ainfo.naddr);
        ainfo.ilink = 0;
        ainfo.name = NULL;
        
        ipc_callid_t rcallid;
        size_t max_size;
        
        if (!async_data_read_receive(&rcallid, &max_size)) {
                async_answer_0(rcallid, EREFUSED);
                async_answer_0(callid, EREFUSED);
                return;
        }
        
        int rc = inetcfg_addr_get(addr_id, &ainfo);
        if (rc != EOK) {
                async_answer_0(callid, rc);
                return;
        }
        
        uint32_t naddr_addr;
        uint8_t naddr_bits;
        rc = inet_naddr_pack(&ainfo.naddr, &naddr_addr, &naddr_bits);
        if (rc != EOK) {
                async_answer_0(callid, rc);
                return;
        }
        
        sysarg_t retval = async_data_read_finalize(rcallid, ainfo.name,
            min(max_size, str_size(ainfo.name)));
        free(ainfo.name);
        
        async_answer_3(callid, retval, (sysarg_t) naddr_addr,
            (sysarg_t) naddr_bits, ainfo.ilink);
}

static void inetcfg_addr_get_id_srv(ipc_callid_t callid, ipc_call_t *call)
{
        char *name;
        sysarg_t link_id;
        sysarg_t addr_id;
        int 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(callid, rc);
                return;
        }

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

static void inetcfg_get_addr_list_srv(ipc_callid_t callid, ipc_call_t *call)
{
        ipc_callid_t rcallid;
        size_t count;
        size_t max_size;
        size_t act_size;
        size_t size;
        sysarg_t *id_buf;
        int rc;

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

        if (!async_data_read_receive(&rcallid, &max_size)) {
                async_answer_0(rcallid, EREFUSED);
                async_answer_0(callid, EREFUSED);
                return;
        }

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

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

        sysarg_t retval = async_data_read_finalize(rcallid, id_buf, size);
        free(id_buf);

        async_answer_1(callid, retval, act_size);
}

static void inetcfg_get_link_list_srv(ipc_callid_t callid, ipc_call_t *call)
{
        ipc_callid_t rcallid;
        size_t max_size;
        size_t act_size;
        size_t size;
        sysarg_t *id_buf;
        int rc;

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

        if (!async_data_read_receive(&rcallid, &max_size)) {
                async_answer_0(rcallid, EREFUSED);
                async_answer_0(callid, EREFUSED);
                return;
        }

        rc = inetcfg_get_link_list(&id_buf, &act_size);
        if (rc != EOK) {
                async_answer_0(rcallid, rc);
                async_answer_0(callid, rc);
                return;
        }

        size = min(act_size, max_size);

        sysarg_t retval = async_data_read_finalize(rcallid, id_buf, size);
        free(id_buf);

        async_answer_1(callid, retval, act_size);
}

static void inetcfg_get_sroute_list_srv(ipc_callid_t callid, ipc_call_t *call)
{
        ipc_callid_t rcallid;
        size_t count;
        size_t max_size;
        size_t act_size;
        size_t size;
        sysarg_t *id_buf;
        int rc;

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

        if (!async_data_read_receive(&rcallid, &max_size)) {
                async_answer_0(rcallid, EREFUSED);
                async_answer_0(callid, EREFUSED);
                return;
        }

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

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

        sysarg_t retval = async_data_read_finalize(rcallid, id_buf, size);
        free(id_buf);

        async_answer_1(callid, retval, act_size);
}

static void inetcfg_link_get_srv(ipc_callid_t callid, ipc_call_t *call)
{
        ipc_callid_t rcallid;
        size_t max_size;

        sysarg_t link_id;
        inet_link_info_t linfo;
        int 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(&rcallid, &max_size)) {
                async_answer_0(rcallid, EREFUSED);
                async_answer_0(callid, EREFUSED);
                return;
        }

        rc = inetcfg_link_get(link_id, &linfo);
        if (rc != EOK) {
                async_answer_0(rcallid, rc);
                async_answer_0(callid, rc);
                return;
        }

        sysarg_t retval = async_data_read_finalize(rcallid, linfo.name,
            min(max_size, str_size(linfo.name)));
        free(linfo.name);

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

static void inetcfg_sroute_create_srv(ipc_callid_t callid,
    ipc_call_t *call)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_sroute_create_srv()");
        
        char *name;
        int rc = async_data_write_accept((void **) &name, true, 0, LOC_NAME_MAXLEN,
            0, NULL);
        if (rc != EOK) {
                async_answer_0(callid, rc);
                return;
        }
        
        inet_naddr_t dest;
        inet_addr_t router;
        
        inet_naddr_unpack(IPC_GET_ARG1(*call), IPC_GET_ARG2(*call), &dest);
        inet_addr_unpack(IPC_GET_ARG3(*call), &router);
        
        sysarg_t sroute_id = 0;
        rc = inetcfg_sroute_create(name, &dest, &router, &sroute_id);
        free(name);
        async_answer_1(callid, rc, sroute_id);
}

static void inetcfg_sroute_delete_srv(ipc_callid_t callid, ipc_call_t *call)
{
        sysarg_t sroute_id;
        int 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(callid, rc);
}

static void inetcfg_sroute_get_srv(ipc_callid_t callid, ipc_call_t *call)
{
        log_msg(LOG_DEFAULT, LVL_DEBUG, "inetcfg_sroute_get_srv()");
        
        sysarg_t sroute_id = IPC_GET_ARG1(*call);
        
        inet_sroute_info_t srinfo;
        
        inet_naddr_any(&srinfo.dest);
        inet_addr_any(&srinfo.router);
        srinfo.name = NULL;
        
        ipc_callid_t rcallid;
        size_t max_size;
        if (!async_data_read_receive(&rcallid, &max_size)) {
                async_answer_0(rcallid, EREFUSED);
                async_answer_0(callid, EREFUSED);
                return;
        }
        
        int rc = inetcfg_sroute_get(sroute_id, &srinfo);
        if (rc != EOK) {
                async_answer_0(callid, rc);
                return;
        }
        
        uint32_t dest_addr;
        uint8_t dest_bits;
        rc = inet_naddr_pack(&srinfo.dest, &dest_addr, &dest_bits);
        if (rc != EOK) {
                async_answer_0(callid, rc);
                return;
        }
        
        uint32_t router_addr;
        rc = inet_addr_pack(&srinfo.router, &router_addr);
        if (rc != EOK) {
                async_answer_0(callid, rc);
                return;
        }
        
        sysarg_t retval = async_data_read_finalize(rcallid, srinfo.name,
            min(max_size, str_size(srinfo.name)));
        free(srinfo.name);
        
        async_answer_3(callid, retval, (sysarg_t) dest_addr,
            (sysarg_t) dest_bits, (sysarg_t) router_addr);
}

static void inetcfg_sroute_get_id_srv(ipc_callid_t callid, ipc_call_t *call)
{
        char *name;
        sysarg_t sroute_id;
        int 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(callid, rc);
                return;
        }

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

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

        /* Accept the connection */
        async_answer_0(iid, EOK);

        while (true) {
                ipc_call_t call;
                ipc_callid_t callid = async_get_call(&call);
                sysarg_t method = IPC_GET_IMETHOD(call);

                if (!method) {
                        /* The other side has hung up */
                        async_answer_0(callid, EOK);
                        return;
                }

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

/** @}
 */