file.c

第二层隧道模块l2tp源码,开发环境为linux

        return -1;
    }
    return 0;
}

int set_authname (char *word, char *value, int context, void *item)
{
    struct lac *l = (struct lac *) item;
    struct lns *n = (struct lns *) item;
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LNS:
        if (set_string (word, value, n->authname, sizeof (n->authname)))
            return -1;
        break;
    case CONTEXT_LAC:
        if (set_string (word, value, l->authname, sizeof (l->authname)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_hostname (char *word, char *value, int context, void *item)
{
    struct lac *l = (struct lac *) item;
    struct lns *n = (struct lns *) item;
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LNS:
        if (set_string (word, value, n->hostname, sizeof (n->hostname)))
            return -1;
        break;
    case CONTEXT_LAC:
        if (set_string (word, value, l->hostname, sizeof (l->hostname)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_passwdauth (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LNS:
        if (set_boolean (word, value, &(((struct lns *) item)->passwdauth)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_hbit (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LAC:
        if (set_boolean (word, value, &(((struct lac *) item)->hbit)))
            return -1;
        break;
    case CONTEXT_LNS:
        if (set_boolean (word, value, &(((struct lns *) item)->hbit)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_challenge (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LAC:
        if (set_boolean (word, value, &(((struct lac *) item)->challenge)))
            return -1;
        break;
    case CONTEXT_LNS:
        if (set_boolean (word, value, &(((struct lns *) item)->challenge)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_lbit (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LAC:
        if (set_boolean (word, value, &(((struct lac *) item)->lbit)))
            return -1;
        break;
    case CONTEXT_LNS:
        if (set_boolean (word, value, &(((struct lns *) item)->lbit)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}


int set_debug (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LAC:
        if (set_boolean (word, value, &(((struct lac *) item)->debug)))
            return -1;
        break;
    case CONTEXT_LNS:
        if (set_boolean (word, value, &(((struct lns *) item)->debug)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_pppoptfile (char *word, char *value, int context, void *item)
{
    struct lac *l = (struct lac *) item;
    struct lns *n = (struct lns *) item;
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LNS:
        if (set_string (word, value, n->pppoptfile, sizeof (n->pppoptfile)))
            return -1;
        break;
    case CONTEXT_LAC:
        if (set_string (word, value, l->pppoptfile, sizeof (l->pppoptfile)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_papchap (char *word, char *value, int context, void *item)
{
    int result;
    char *c;
    struct lac *l = (struct lac *) item;
    struct lns *n = (struct lns *) item;
    if (set_boolean (word, value, &result))
        return -1;
    c = strchr (word, ' ');
    c++;
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LAC:
        if (c[0] == 'p')        /* PAP */
            if (word[2] == 'f')
                l->pap_refuse = result;
            else
                l->pap_require = result;
        else if (c[0] == 'a')   /* Authentication */
            if (word[2] == 'f')
                l->authself = result;
            else
                l->authpeer = result;
        else /* CHAP */ if (word[2] == 'f')
            l->chap_refuse = result;
        else
            l->chap_require = result;
        break;
    case CONTEXT_LNS:
        if (c[0] == 'p')        /* PAP */
            if (word[2] == 'f')
                n->pap_refuse = result;
            else
                n->pap_require = result;
        else if (c[0] == 'a')   /* Authentication */
            if (word[2] == 'f')
                n->authself = !result;
            else
                n->authpeer = result;
        else /* CHAP */ if (word[2] == 'f')
            n->chap_refuse = result;
        else
            n->chap_require = result;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_redial (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LAC:
        if (set_boolean (word, value, &(((struct lac *) item)->redial)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_accesscontrol (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_GLOBAL:
        if (set_boolean
            (word, value, &(((struct global *) item)->accesscontrol)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_userspace (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_GLOBAL:
        if (set_boolean
            (word, value, &(((struct global *) item)->forceuserspace)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

struct iprange *set_range (char *word, char *value, struct iprange *in)
{
    char *c, *d = NULL;
    struct iprange *ipr, *p;
    struct hostent *hp;
    c = strchr (value, '-');
    if (c)
    {
        d = c + 1;
        *c = 0;
        while ((c >= value) && (*c < 33))
            *(c--) = 0;
        while (*d && (*d < 33))
            d++;
    }
    if (!strlen (value) || (c && !strlen (d)))
    {
        snprintf (filerr, sizeof (filerr),
                  "format is '%s <host or ip> - <host or ip>'\n", word);
        return NULL;
    }
    ipr = (struct iprange *) malloc (sizeof (struct iprange));
    ipr->next = NULL;
    hp = gethostbyname (value);
    if (!hp)
    {
        snprintf (filerr, sizeof (filerr), "Unknown host %s\n", value);
        free (ipr);
        return NULL;
    }
    bcopy (hp->h_addr, &ipr->start, sizeof (unsigned int));
    if (c)
    {
        hp = gethostbyname (d);
        if (!hp)
        {
            snprintf (filerr, sizeof (filerr), "Unknown host %s\n", d);
            free (ipr);
            return NULL;
        }
        bcopy (hp->h_addr, &ipr->end, sizeof (unsigned int));
    }
    else
        ipr->end = ipr->start;
    if (ntohl (ipr->start) > ntohl (ipr->end))
    {
        snprintf (filerr, sizeof (filerr), "start is greater than end!\n");
        free (ipr);
        return NULL;
    }
    if (word[0] == 'n')
        ipr->sense = SENSE_DENY;
    else
        ipr->sense = SENSE_ALLOW;
    p = in;
    if (p)
    {
        while (p->next)
            p = p->next;
        p->next = ipr;
        return in;
    }
    else
        return ipr;
}

int set_iprange (char *word, char *value, int context, void *item)
{
    struct lns *lns = (struct lns *) item;
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LNS:
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    lns->range = set_range (word, value, lns->range);
    if (!lns->range)
        return -1;
#ifdef DEBUG_FILE
    log (LOG_DEBUG, "range start = %x, end = %x, sense=%ud\n",
         ntohl (ipr->start), ntohl (ipr->end), ipr->sense);
#endif
    return 0;
}

int set_lac (char *word, char *value, int context, void *item)
{
    struct lns *lns = (struct lns *) item;
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LNS:
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    lns->lacs = set_range (word, value, lns->lacs);
    if (!lns->lacs)
        return -1;
#ifdef DEBUG_FILE
    log (LOG_DEBUG, "lac start = %x, end = %x, sense=%ud\n",
         ntohl (ipr->start), ntohl (ipr->end), ipr->sense);
#endif
    return 0;
}

int set_exclusive (char *word, char *value, int context, void *item)
{
    switch (context & ~CONTEXT_DEFAULT)
    {
    case CONTEXT_LNS:
        if (set_boolean (word, value, &(((struct lns *) item)->exclusive)))
            return -1;
        break;
    default:
        snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
                  word);
        return -1;
    }
    return 0;
}

int set_ip (char *word, char *value, unsigned int *addr)
{
    struct hostent *hp;
    hp = gethostbyname (value);
    if (!hp)
    {
        snprintf (filerr, sizeof (filerr), "%s: host '%s' not found\n",
                  __FUNCTION__, value);
        return -1;
    }
    bcopy (hp->h_addr, addr, sizeof (unsigned int));
    return 0;
}

int set_localaddr (char *word, char *value, int context, void *item)
{
    struct lac *l;