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/* $OpenBSD: npppd_pool.c,v 1.10 2017/05/30 17:22:00 yasuoka Exp $ */ |
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/*- |
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* Copyright (c) 2009 Internet Initiative Japan Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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/**@file */ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <net/route.h> |
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#include <netinet/ip.h> |
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#include <arpa/inet.h> |
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#include <net/if_dl.h> |
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#include <stdio.h> |
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#include <time.h> |
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#include <event.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include <syslog.h> |
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#include <stdlib.h> |
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#include <stdarg.h> |
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#include <netdb.h> |
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#include "slist.h" |
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#include "debugutil.h" |
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#include "addr_range.h" |
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#include "radish.h" |
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#include "npppd_local.h" |
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#include "npppd_pool.h" |
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#include "npppd_subr.h" |
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#include "net_utils.h" |
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#ifdef NPPPD_POOL_DEBUG |
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#define NPPPD_POOL_DBG(x) npppd_pool_log x |
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#define NPPPD_POOL_ASSERT(cond) \ |
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if (!(cond)) { \ |
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fprintf(stderr, \ |
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"\nASSERT(" #cond ") failed on %s() at %s:%d.\n"\ |
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, __func__, __FILE__, __LINE__); \ |
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abort(); \ |
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} |
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#else |
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#define NPPPD_POOL_ASSERT(cond) |
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#define NPPPD_POOL_DBG(x) |
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#endif |
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#define A(v) ((0xff000000 & (v)) >> 24), ((0x00ff0000 & (v)) >> 16), \ |
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((0x0000ff00 & (v)) >> 8), (0x000000ff & (v)) |
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#define SA(sin4) ((struct sockaddr *)(sin4)) |
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#define SHUFLLE_MARK 0xffffffffL |
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static int npppd_pool_log(npppd_pool *, int, const char *, ...) __printflike(3, 4); |
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static int is_valid_host_address (uint32_t); |
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static int npppd_pool_regist_radish(npppd_pool *, struct in_addr_range *, |
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struct sockaddr_npppd *, int ); |
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/*********************************************************************** |
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* npppd_pool object management |
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***********************************************************************/ |
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/** Initialize npppd_poll. */ |
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int |
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npppd_pool_init(npppd_pool *_this, npppd *base, const char *name) |
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{ |
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memset(_this, 0, sizeof(npppd_pool)); |
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strlcpy(_this->ipcp_name, name, sizeof(_this->ipcp_name)); |
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_this->npppd = base; |
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slist_init(&_this->dyna_addrs); |
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_this->initialized = 1; |
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return 0; |
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} |
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/** Start to use npppd_pool. */ |
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int |
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npppd_pool_start(npppd_pool *_this) |
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{ |
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return 0; /* nothing to do */ |
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} |
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/** Finalize npppd_poll. */ |
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void |
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npppd_pool_uninit(npppd_pool *_this) |
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{ |
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_this->initialized = 0; |
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slist_fini(&_this->dyna_addrs); |
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free(_this->addrs); |
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_this->addrs = NULL; |
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_this->addrs_size = 0; |
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_this->npppd = NULL; |
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} |
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/** Reload configuration. */ |
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int |
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npppd_pool_reload(npppd_pool *_this) |
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{ |
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int i, count, addrs_size; |
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struct sockaddr_npppd *addrs; |
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struct in_addr_range *pool, *dyna_pool, *range; |
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char buf0[BUFSIZ], buf1[BUFSIZ]; |
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struct ipcpconf *ipcp; |
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addrs = NULL; |
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pool = NULL; |
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dyna_pool = NULL; |
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buf0[0] = '\0'; |
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TAILQ_FOREACH(ipcp, &_this->npppd->conf.ipcpconfs, entry) { |
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if (strcmp(ipcp->name, _this->ipcp_name) == 0) { |
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dyna_pool = ipcp->dynamic_pool; |
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pool = ipcp->static_pool; |
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} |
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} |
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addrs_size = 0; |
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for (range = dyna_pool; range != NULL; range = range->next) |
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addrs_size++; |
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for (range = pool; range != NULL; range = range->next) |
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addrs_size++; |
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if ((addrs = calloc(addrs_size + 1, sizeof(struct sockaddr_npppd))) |
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== NULL) { |
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/* addr_size + 1 because of avoiding calloc(0). */ |
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npppd_pool_log(_this, LOG_WARNING, |
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"calloc() failed in %s: %m", __func__); |
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goto fail; |
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} |
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/* Register dynamic pool address with RADISH. */ |
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count = 0; |
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for (i = 0, range = dyna_pool; range != NULL; range = range->next, i++){ |
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if (npppd_pool_regist_radish(_this, range, &addrs[count], 1)) |
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goto fail; |
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if (count == 0) |
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strlcat(buf0, "dyn_pool=[", sizeof(buf0)); |
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else |
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strlcat(buf0, ",", sizeof(buf0)); |
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snprintf(buf1, sizeof(buf1), "%d.%d.%d.%d/%d", |
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A(range->addr), netmask2prefixlen(range->mask)); |
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strlcat(buf0, buf1, sizeof(buf0)); |
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count++; |
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} |
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if (i > 0) |
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strlcat(buf0, "] ", sizeof(buf0)); |
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/* Register static pool address with RADISH. */ |
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for (i = 0, range = pool; range != NULL; range = range->next, i++) { |
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if (npppd_pool_regist_radish(_this, range, &addrs[count], 0)) |
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goto fail; |
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if (i == 0) |
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strlcat(buf0, "pool=[", sizeof(buf0)); |
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else |
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strlcat(buf0, ",", sizeof(buf0)); |
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snprintf(buf1, sizeof(buf1), "%d.%d.%d.%d/%d", |
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A(range->addr), netmask2prefixlen(range->mask)); |
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strlcat(buf0, buf1, sizeof(buf0)); |
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count++; |
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} |
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if (i > 0) |
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strlcat(buf0, "]", sizeof(buf0)); |
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npppd_pool_log(_this, LOG_INFO, "%s", buf0); |
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count = 0; |
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slist_add(&_this->dyna_addrs, (void *)SHUFLLE_MARK); |
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for (range = dyna_pool; range != NULL; range = range->next) { |
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if (count >= NPPPD_MAX_POOLED_ADDRS) |
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break; |
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for (i = 0; i <= ~(range->mask); i++) { |
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if (!is_valid_host_address(range->addr + i)) |
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continue; |
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if (count >= NPPPD_MAX_POOLED_ADDRS) |
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break; |
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slist_add(&_this->dyna_addrs, |
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(void *)(uintptr_t)(range->addr + i)); |
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count++; |
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} |
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} |
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free(_this->addrs); |
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_this->addrs = addrs; |
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_this->addrs_size = addrs_size; |
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return 0; |
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fail: |
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free(addrs); |
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return 1; |
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} |
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static int |
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npppd_pool_regist_radish(npppd_pool *_this, struct in_addr_range *range, |
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struct sockaddr_npppd *snp, int is_dynamic) |
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{ |
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int rval; |
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struct sockaddr_in sin4a, sin4b; |
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struct sockaddr_npppd *snp0; |
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npppd_pool *npool0; |
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memset(&sin4a, 0, sizeof(sin4a)); |
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memset(&sin4b, 0, sizeof(sin4b)); |
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sin4a.sin_len = sin4b.sin_len = sizeof(sin4a); |
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sin4a.sin_family = sin4b.sin_family = AF_INET; |
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sin4a.sin_addr.s_addr = htonl(range->addr); |
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sin4b.sin_addr.s_addr = htonl(range->mask); |
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snp->snp_len = sizeof(struct sockaddr_npppd); |
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snp->snp_family = AF_INET; |
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snp->snp_addr.s_addr = htonl(range->addr); |
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snp->snp_mask.s_addr = htonl(range->mask); |
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snp->snp_data_ptr = _this; |
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if (is_dynamic) |
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snp->snp_type = SNP_DYN_POOL; |
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else |
239 |
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snp->snp_type = SNP_POOL; |
240 |
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241 |
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if ((snp0 = rd_lookup(SA(&sin4a), SA(&sin4b), |
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_this->npppd->rd)) != NULL) { |
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/* |
244 |
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* Immediately after the radish tree is initialized, |
245 |
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* assuming that it has only POOL entry. |
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*/ |
247 |
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NPPPD_POOL_ASSERT(snp0->snp_type != SNP_PPP); |
248 |
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npool0 = snp0->snp_data_ptr; |
249 |
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250 |
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if (!is_dynamic && npool0 == _this) |
251 |
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/* Already registered as dynamic pool address. */ |
252 |
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return 0; |
253 |
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254 |
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npppd_pool_log(_this, LOG_WARNING, |
255 |
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"%d.%d.%d.%d/%d is already defined as '%s'(%s)", |
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A(range->addr), netmask2prefixlen(range->mask), |
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npool0->ipcp_name, (snp0->snp_type == SNP_POOL) |
258 |
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? "static" : "dynamic"); |
259 |
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goto fail; |
260 |
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} |
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if ((rval = rd_insert(SA(&sin4a), SA(&sin4b), _this->npppd->rd, |
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snp)) != 0) { |
263 |
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errno = rval; |
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npppd_pool_log(_this, LOG_WARNING, |
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"rd_insert(%d.%d.%d.%d/%d) failed: %m", |
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A(range->addr), netmask2prefixlen(range->mask)); |
267 |
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goto fail; |
268 |
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} |
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270 |
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return 0; |
271 |
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fail: |
272 |
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return 1; |
273 |
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274 |
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} |
275 |
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276 |
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/*********************************************************************** |
277 |
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* API |
278 |
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***********************************************************************/ |
279 |
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/** Assign dynamic pool address. */ |
280 |
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uint32_t |
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npppd_pool_get_dynamic(npppd_pool *_this, npppd_ppp *ppp) |
282 |
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{ |
283 |
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int shuffle_cnt; |
284 |
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uintptr_t result = 0; |
285 |
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struct sockaddr_npppd *snp; |
286 |
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npppd_ppp *ppp0; |
287 |
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288 |
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shuffle_cnt = 0; |
289 |
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slist_itr_first(&_this->dyna_addrs); |
290 |
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while (slist_length(&_this->dyna_addrs) > 1 && |
291 |
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slist_itr_has_next(&_this->dyna_addrs)) { |
292 |
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result = (uintptr_t)slist_itr_next(&_this->dyna_addrs); |
293 |
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if (result == 0) |
294 |
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break; |
295 |
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/* shuffle */ |
296 |
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if ((uint32_t)result == SHUFLLE_MARK) { |
297 |
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/* |
298 |
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* When the free list is empty, SHUFLLE_MARK is |
299 |
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* retrieved twice sequentially. This means there is |
300 |
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* no address to use. |
301 |
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*/ |
302 |
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if (shuffle_cnt++ > 0) { |
303 |
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result = 0; |
304 |
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break; |
305 |
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} |
306 |
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NPPPD_POOL_DBG((_this, LOG_DEBUG, "shuffle")); |
307 |
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slist_itr_remove(&_this->dyna_addrs); |
308 |
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slist_shuffle(&_this->dyna_addrs); |
309 |
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slist_add(&_this->dyna_addrs, (void *)result); |
310 |
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slist_itr_first(&_this->dyna_addrs); |
311 |
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continue; |
312 |
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} |
313 |
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slist_itr_remove(&_this->dyna_addrs); |
314 |
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|
315 |
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switch (npppd_pool_get_assignability(_this, (uint32_t)result, |
316 |
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0xffffffffL, &snp)) { |
317 |
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case ADDRESS_OK: |
318 |
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/* only succeed here */ |
319 |
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return (uint32_t)result; |
320 |
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default: |
321 |
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/* |
322 |
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* Used as a interface address |
323 |
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*/ |
324 |
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continue; |
325 |
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case ADDRESS_BUSY: |
326 |
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/* |
327 |
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* Used by the previous configuration. |
328 |
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*/ |
329 |
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NPPPD_POOL_ASSERT(snp != NULL); |
330 |
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NPPPD_POOL_ASSERT(snp->snp_type == SNP_PPP); |
331 |
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ppp0 = snp->snp_data_ptr; |
332 |
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ppp0->assigned_pool = _this; |
333 |
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ppp0->assign_dynapool = 1; /* need to return */ |
334 |
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continue; |
335 |
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} |
336 |
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break; |
337 |
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} |
338 |
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return (uint32_t)0; |
339 |
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} |
340 |
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|
341 |
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inline static int |
342 |
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npppd_is_ifcace_ip4addr(npppd *_this, uint32_t ip4addr) |
343 |
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{ |
344 |
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int i; |
345 |
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|
346 |
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for (i = 0; i < countof(_this->iface); i++) { |
347 |
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if (npppd_iface_ip_is_ready(&_this->iface[i]) && |
348 |
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_this->iface[i].ip4addr.s_addr == ip4addr) |
349 |
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return 1; |
350 |
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} |
351 |
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352 |
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return 0; |
353 |
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} |
354 |
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|
355 |
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/** Assign IP address. */ |
356 |
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int |
357 |
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npppd_pool_assign_ip(npppd_pool *_this, npppd_ppp *ppp) |
358 |
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{ |
359 |
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int rval; |
360 |
|
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uint32_t ip4; |
361 |
|
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void *rtent; |
362 |
|
|
struct sockaddr_in addr = { |
363 |
|
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.sin_family = AF_INET, |
364 |
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.sin_len = sizeof(struct sockaddr_in) |
365 |
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}, mask = { |
366 |
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.sin_family = AF_INET, |
367 |
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.sin_len = sizeof(struct sockaddr_in), |
368 |
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|
}; |
369 |
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|
struct sockaddr_npppd *snp; |
370 |
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|
371 |
|
|
ip4 = ntohl(ppp->ppp_framed_ip_address.s_addr); |
372 |
|
|
|
373 |
|
|
/* If the address contains dynamic pool address list, delete it. */ |
374 |
|
|
slist_itr_first(&_this->dyna_addrs); |
375 |
|
|
while (slist_itr_has_next(&_this->dyna_addrs)) { |
376 |
|
|
if ((uintptr_t)slist_itr_next(&_this->dyna_addrs) != ip4) |
377 |
|
|
continue; |
378 |
|
|
slist_itr_remove(&_this->dyna_addrs); |
379 |
|
|
break; |
380 |
|
|
} |
381 |
|
|
|
382 |
|
|
addr.sin_addr = ppp->ppp_framed_ip_address; |
383 |
|
|
mask.sin_addr = ppp->ppp_framed_ip_netmask; |
384 |
|
|
addr.sin_addr.s_addr &= mask.sin_addr.s_addr; |
385 |
|
|
|
386 |
|
|
if (rd_delete(SA(&addr), SA(&mask), _this->npppd->rd, &rtent) == 0) { |
387 |
|
|
snp = rtent; |
388 |
|
|
/* It has duplicate address entry. change from pool to PPP. */ |
389 |
|
|
NPPPD_POOL_ASSERT(snp != NULL); |
390 |
|
|
NPPPD_POOL_ASSERT(snp->snp_type != SNP_PPP); |
391 |
|
|
ppp->snp.snp_next = snp; |
392 |
|
|
NPPPD_POOL_DBG((_this, DEBUG_LEVEL_2, |
393 |
|
|
"pool %s/32 => %s(ppp=%d)", |
394 |
|
|
inet_ntoa(ppp->ppp_framed_ip_address), ppp->username, |
395 |
|
|
ppp->id)); |
396 |
|
|
} |
397 |
|
|
NPPPD_POOL_DBG((_this, LOG_DEBUG, "rd_insert(%s) %s", |
398 |
|
|
inet_ntoa(addr.sin_addr), ppp->username)); |
399 |
|
|
if ((rval = rd_insert((struct sockaddr *)&addr, |
400 |
|
|
(struct sockaddr *)&mask, _this->npppd->rd, &ppp->snp)) != 0) { |
401 |
|
|
errno = rval; |
402 |
|
|
log_printf(LOG_INFO, "rd_insert(%s) failed: %m", |
403 |
|
|
inet_ntoa(ppp->ppp_framed_ip_address)); |
404 |
|
|
return 1; |
405 |
|
|
} |
406 |
|
|
|
407 |
|
|
return 0; |
408 |
|
|
} |
409 |
|
|
|
410 |
|
|
/** Release IP address. */ |
411 |
|
|
void |
412 |
|
|
npppd_pool_release_ip(npppd_pool *_this, npppd_ppp *ppp) |
413 |
|
|
{ |
414 |
|
|
void *item; |
415 |
|
|
int rval; |
416 |
|
|
struct sockaddr_npppd *snp; |
417 |
|
|
struct sockaddr_in addr = { |
418 |
|
|
.sin_family = AF_INET, |
419 |
|
|
.sin_len = sizeof(struct sockaddr_in) |
420 |
|
|
}, mask = { |
421 |
|
|
.sin_family = AF_INET, |
422 |
|
|
.sin_len = sizeof(struct sockaddr_in), |
423 |
|
|
}; |
424 |
|
|
|
425 |
|
|
/* |
426 |
|
|
* `_this' may be NULL. It was gone because of a configuration change. |
427 |
|
|
*/ |
428 |
|
|
if (!ppp_ip_assigned(ppp)) |
429 |
|
|
return; |
430 |
|
|
|
431 |
|
|
addr.sin_addr = ppp->ppp_framed_ip_address; |
432 |
|
|
mask.sin_addr = ppp->ppp_framed_ip_netmask; |
433 |
|
|
addr.sin_addr.s_addr &= mask.sin_addr.s_addr; |
434 |
|
|
|
435 |
|
|
if ((rval = rd_delete((struct sockaddr *)&addr, |
436 |
|
|
(struct sockaddr *)&mask, ppp->pppd->rd, &item)) != 0) { |
437 |
|
|
errno = rval; |
438 |
|
|
log_printf(LOG_INFO, "Unexpected error: " |
439 |
|
|
"rd_delete(%s) failed: %m", |
440 |
|
|
inet_ntoa(ppp->ppp_framed_ip_address)); |
441 |
|
|
} |
442 |
|
|
snp = item; |
443 |
|
|
|
444 |
|
|
if (_this != NULL && ppp->assign_dynapool != 0) { |
445 |
|
|
NPPPD_POOL_ASSERT(_this == ppp->assigned_pool); |
446 |
|
|
/* return to dynamic address pool list */ |
447 |
|
|
slist_add(&((npppd_pool *)ppp->assigned_pool)->dyna_addrs, |
448 |
|
|
(void *)(uintptr_t)ntohl( |
449 |
|
|
ppp->ppp_framed_ip_address.s_addr)); |
450 |
|
|
} |
451 |
|
|
|
452 |
|
|
if (snp != NULL && snp->snp_next != NULL) { |
453 |
|
|
/* |
454 |
|
|
* The radish entry is registered as a list. Insert the next |
455 |
|
|
* of the list to the radish tree. |
456 |
|
|
*/ |
457 |
|
|
if (rd_insert(SA(&addr), SA(&mask), ppp->pppd->rd, |
458 |
|
|
snp->snp_next) != 0) { |
459 |
|
|
log_printf(LOG_INFO, "Unexpected error: " |
460 |
|
|
"rd_insert(%s) failed: %m", |
461 |
|
|
inet_ntoa(ppp->ppp_framed_ip_address)); |
462 |
|
|
} |
463 |
|
|
NPPPD_POOL_DBG((_this, DEBUG_LEVEL_2, |
464 |
|
|
"pool %s/%d <= %s(ppp=%d)", |
465 |
|
|
inet_ntoa(ppp->ppp_framed_ip_address), |
466 |
|
|
netmask2prefixlen(ntohl(ppp->ppp_framed_ip_netmask.s_addr)), |
467 |
|
|
ppp->username, ppp->id)); |
468 |
|
|
snp->snp_next = NULL; |
469 |
|
|
} |
470 |
|
|
} |
471 |
|
|
|
472 |
|
|
/** |
473 |
|
|
* Check if specified address is assignable. |
474 |
|
|
* @return {@link ::#ADDRESS_OK} or {@link ::#ADDRESS_RESERVED} or |
475 |
|
|
* {@link ::#ADDRESS_BUSY} or {@link ::#ADDRESS_INVALID} or |
476 |
|
|
* {@link ::#ADDRESS_OUT_OF_POOL} |
477 |
|
|
*/ |
478 |
|
|
int |
479 |
|
|
npppd_pool_get_assignability(npppd_pool *_this, uint32_t ip4addr, |
480 |
|
|
uint32_t ip4mask, struct sockaddr_npppd **psnp) |
481 |
|
|
{ |
482 |
|
|
struct radish *radish; |
483 |
|
|
struct sockaddr_in sin4; |
484 |
|
|
struct sockaddr_npppd *snp; |
485 |
|
|
|
486 |
|
|
NPPPD_POOL_ASSERT(ip4mask != 0); |
487 |
|
|
NPPPD_POOL_DBG((_this, LOG_DEBUG, "%s(%08x,%08x)", __func__, ip4addr, |
488 |
|
|
ip4mask)); |
489 |
|
|
|
490 |
|
|
if (netmask2prefixlen(htonl(ip4mask)) == 32) { |
491 |
|
|
if (!is_valid_host_address(ip4addr)) |
492 |
|
|
return ADDRESS_INVALID; |
493 |
|
|
} |
494 |
|
|
|
495 |
|
|
memset(&sin4, 0, sizeof(sin4)); |
496 |
|
|
|
497 |
|
|
sin4.sin_len = sizeof(sin4); |
498 |
|
|
sin4.sin_family = AF_INET; |
499 |
|
|
sin4.sin_addr.s_addr = htonl(ip4addr); |
500 |
|
|
|
501 |
|
|
if (npppd_is_ifcace_ip4addr(_this->npppd, sin4.sin_addr.s_addr)) |
502 |
|
|
return ADDRESS_RESERVED; |
503 |
|
|
/* Not to assign interface address */ |
504 |
|
|
|
505 |
|
|
if (rd_match(SA(&sin4), _this->npppd->rd, &radish)) { |
506 |
|
|
do { |
507 |
|
|
snp = radish->rd_rtent; |
508 |
|
|
if (snp->snp_type == SNP_POOL || |
509 |
|
|
snp->snp_type == SNP_DYN_POOL) { |
510 |
|
|
if (psnp != NULL) |
511 |
|
|
*psnp = snp; |
512 |
|
|
if (snp->snp_data_ptr == _this) |
513 |
|
|
return ADDRESS_OK; |
514 |
|
|
else |
515 |
|
|
return ADDRESS_RESERVED; |
516 |
|
|
} |
517 |
|
|
if (snp->snp_type == SNP_PPP) { |
518 |
|
|
if (psnp != NULL) |
519 |
|
|
*psnp = snp; |
520 |
|
|
return ADDRESS_BUSY; |
521 |
|
|
} |
522 |
|
|
} while (rd_match_next(SA(&sin4), _this->npppd->rd, &radish, |
523 |
|
|
radish)); |
524 |
|
|
} |
525 |
|
|
|
526 |
|
|
return ADDRESS_OUT_OF_POOL; |
527 |
|
|
} |
528 |
|
|
/*********************************************************************** |
529 |
|
|
* miscellaneous functions |
530 |
|
|
***********************************************************************/ |
531 |
|
|
/** |
532 |
|
|
* Check if valid host address. |
533 |
|
|
* <pre> |
534 |
|
|
* There are some issues that it uses host address as broadcast address |
535 |
|
|
* in natural mask, so it is not correct. |
536 |
|
|
* The issue is as follows: |
537 |
|
|
* (1) BSDs treat the following packet as it is not forwarded and |
538 |
|
|
* is received as the packet to myself. |
539 |
|
|
* (2) The issue that Windows can't use L2TP/IPsec when Windows is assigned |
540 |
|
|
* IP address .255.</pre> |
541 |
|
|
*/ |
542 |
|
|
static int |
543 |
|
|
is_valid_host_address(uint32_t addr) |
544 |
|
|
{ |
545 |
|
|
if (IN_CLASSA(addr)) |
546 |
|
|
return ((IN_CLASSA_HOST & addr) == 0 || |
547 |
|
|
(IN_CLASSA_HOST & addr) == IN_CLASSA_HOST)? 0 : 1; |
548 |
|
|
if (IN_CLASSB(addr)) |
549 |
|
|
return ((IN_CLASSB_HOST & addr) == 0 || |
550 |
|
|
(IN_CLASSB_HOST & addr) == IN_CLASSB_HOST)? 0 : 1; |
551 |
|
|
if (IN_CLASSC(addr)) |
552 |
|
|
return ((IN_CLASSC_HOST & addr) == 0 || |
553 |
|
|
(IN_CLASSC_HOST & addr) == IN_CLASSC_HOST)? 0 : 1; |
554 |
|
|
|
555 |
|
|
return 0; |
556 |
|
|
} |
557 |
|
|
|
558 |
|
|
/** Record log that begins the label based this instance. */ |
559 |
|
|
static int |
560 |
|
|
npppd_pool_log(npppd_pool *_this, int prio, const char *fmt, ...) |
561 |
|
|
{ |
562 |
|
|
int status; |
563 |
|
|
char logbuf[BUFSIZ]; |
564 |
|
|
va_list ap; |
565 |
|
|
|
566 |
|
|
/* |
567 |
|
|
* npppd_pool_release_ip is called as _this == NULL, |
568 |
|
|
* so it can't NPPPD_POOL_ASSERT(_this != NULL). |
569 |
|
|
*/ |
570 |
|
|
va_start(ap, fmt); |
571 |
|
|
snprintf(logbuf, sizeof(logbuf), "ipcp=%s pool %s", |
572 |
|
|
(_this == NULL)? "null" : _this->ipcp_name, fmt); |
573 |
|
|
status = vlog_printf(prio, logbuf, ap); |
574 |
|
|
va_end(ap); |
575 |
|
|
|
576 |
|
|
return status; |
577 |
|
|
} |