source: MondoRescue/branches/3.2/mindi-busybox/networking/tcpudp_perhost.c

/* Based on ipsvd utilities written by Gerrit Pape <pape@smarden.org>
 * which are released into public domain by the author.
 * Homepage: http://smarden.sunsite.dk/ipsvd/
 *
 * Copyright (C) 2007 Denys Vlasenko.
 *
 * Licensed under GPLv2, see file LICENSE in this source tree.
 */

#include "libbb.h"
#include "tcpudp_perhost.h"

static struct hcc *cc;
static unsigned cclen;

/* to be optimized */

void ipsvd_perhost_init(unsigned c)
{
//  free(cc);
    cc = xzalloc(c * sizeof(*cc));
    cclen = c;
}

unsigned ipsvd_perhost_add(char *ip, unsigned maxconn, struct hcc **hccpp)
{
    unsigned i;
    unsigned conn = 1;
    int freepos = -1;

    for (i = 0; i < cclen; ++i) {
        if (!cc[i].ip) {
            freepos = i;
            continue;
        }
        if (strcmp(cc[i].ip, ip) == 0) {
            conn++;
            continue;
        }
    }
    if (freepos == -1) return 0;
    if (conn <= maxconn) {
        cc[freepos].ip = ip;
        *hccpp = &cc[freepos];
    }
    return conn;
}

void ipsvd_perhost_remove(int pid)
{
    unsigned i;
    for (i = 0; i < cclen; ++i) {
        if (cc[i].pid == pid) {
            free(cc[i].ip);
            cc[i].ip = NULL;
            cc[i].pid = 0;
            return;
        }
    }
}

//void ipsvd_perhost_free(void)
//{
//  free(cc);
//}