/*-
 * Copyright (c) 2012 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Paul Fleischer <paul@xpg.dk>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */
#include <sys/param.h>

#include <netinet/in.h>
#include <netinet/in_systm.h>

#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/bootp.h>
#include <lib/libsa/nfs.h>

#include <lib/libkern/libkern.h>


extern int netif_open(void*);
extern int netif_init(unsigned int tag);

extern struct in_addr servip;

static int netdev_sock = -1;

int
net_open(struct open_file *f, ...)
{
        va_list ap;
        char *path, *proto;
        int error = 0;

        if( netif_init(0) == 0 ) {
                error = ENODEV;
                goto out;
        }

        va_start(ap, f);
        path = va_arg(ap, char *);
        proto = va_arg(ap, char *);
        va_end(ap);
        if ((netdev_sock = netif_open(path)) < 0) {
                error = errno;
                goto out;
        }

        /* send DHCP request */
        bootp(netdev_sock);

        /* IP address was not found */
        if (myip.s_addr == 0) {
                error = ENOENT;
                goto out;
        }

        if (path[0] != '\0') {
                char *c;
                char ip_addr[200];
                /* Parse path specification as IP-ADDR:PATH and overwrite
                   rootip and rootpath with those
                 */

                for(c=path; *c != '\0' && *c != ':'; c++);

                if (*c == ':') {
                        char *filename;
                        strncpy(ip_addr, path, (c-path));
                        ip_addr[(c-path)] = '\0';
                        printf("IP addr: %s\n", ip_addr);
                        rootip.s_addr = inet_addr(ip_addr);

                        c++;
                        /* Finally, strip away file-component and copy it to
                           bootfile */
                        for(filename = c+strlen(c); *filename != '/' && filename > c; filename--);
                        strncpy(rootpath, c, (filename-c));
                        rootpath[(filename-c)] = '\0';
                        printf("Root path: %s\n", rootpath);
                        strcpy(bootfile, ++filename);
                        printf("Bootfile: %s\n", bootfile);
                } else {
                        /* No ':' found, assume it's just a filename */
                        strcpy(bootfile, path);
                }
        }

        /* boot filename was not found */
        if (bootfile[0] == '\0')
                strcpy(bootfile, "netbsd");

        if (strcmp(proto, "nfs") == 0
            && (nfs_mount(netdev_sock, rootip, rootpath) != 0)) {
                error = errno;
                goto out;
        }

        f->f_devdata = &netdev_sock;
out:
        return (error);
}

int
net_close(struct open_file *f)

{
        return (0);
}

int
net_strategy(void *d, int f, daddr_t b, size_t s, void *buf, size_t *r)
{

        return (EIO);
}