/*
 * Copyright (c) 2011-2012 The DragonFly Project.  All rights reserved.
 *
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@dragonflybsd.org>
 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
 *
 * 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.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
 * COPYRIGHT HOLDERS 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 "dmsg_local.h"

/*
 * Allocation wrappers give us shims for possible future use
 */
void *
dmsg_alloc(size_t bytes)
{
        void *ptr;

        ptr = malloc(bytes);
        assert(ptr);
        bzero(ptr, bytes);
        return (ptr);
}

void
dmsg_free(void *ptr)
{
        free(ptr);
}

const char *
dmsg_uuid_to_str(uuid_t *uuid, char **strp)
{
        uint32_t status;
        if (*strp) {
                free(*strp);
                *strp = NULL;
        }
        uuid_to_string(uuid, strp, &status);
        return (*strp);
}

const char *
dmsg_peer_type_to_str(uint8_t type)
{
        switch(type) {
        case DMSG_PEER_NONE:
                return("NONE");
        case DMSG_PEER_ROUTER:
                return("ROUTER");
        case DMSG_PEER_BLOCK:
                return("BLOCK");
        case DMSG_PEER_HAMMER2:
                return("HAMMER2");
        case DMSG_PEER_CLIENT:
                return("CLIENT");
        default:
                return("?PEERTYPE?");
        }
}

int
dmsg_connect(const char *hostname)
{
        struct sockaddr_in lsin;
        struct hostent *hen;
        int fd;
        int opt;

        /*
         * Acquire socket and set options
         */
        if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
                dm_printf(1, "cmd_debug: socket(): %s\n",
                          strerror(errno));
                return -1;
        }
        opt = 1;
        setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof opt);

        /*
         * Connect to the target
         */
        bzero(&lsin, sizeof(lsin));
        lsin.sin_family = AF_INET;
        lsin.sin_addr.s_addr = 0;
        lsin.sin_port = htons(DMSG_LISTEN_PORT);

        if (hostname) {
                hen = gethostbyname2(hostname, AF_INET);
                if (hen == NULL) {
                        if (inet_pton(AF_INET, hostname, &lsin.sin_addr) != 1) {
                                dm_printf(3, "Cannot resolve %s\n", hostname);
                                return -1;
                        }
                } else {
                        bcopy(hen->h_addr, &lsin.sin_addr, hen->h_length);
                }
        }
        if (connect(fd, (struct sockaddr *)&lsin, sizeof(lsin)) < 0) {
                close(fd);
                if (DMsgDebugOpt > 2) {
                        dm_printf(3, "debug: Connect failed: %s\n",
                                  strerror(errno));
                }
                return -1;
        }
        return (fd);
}