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/* $OpenBSD: npppd_ctl.c,v 1.16 2017/08/11 16:25:59 goda 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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#include <sys/socket.h> |
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#include <sys/ioctl.h> |
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#include <net/if.h> |
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#include <netinet/in.h> |
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#include <net/pipex.h> |
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#include <errno.h> |
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#include <event.h> |
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#include <stddef.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "radish.h" |
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#include "npppd_local.h" |
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#include "npppd.h" |
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#include "log.h" |
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struct stopped_ppp { |
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struct npppd_who ppp_who; |
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TAILQ_ENTRY(stopped_ppp) entry; |
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}; |
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struct npppd_ctl { |
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u_int *started_ppp; |
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int started_ppp_pos; |
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int started_ppp_siz; |
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TAILQ_HEAD(, stopped_ppp) stopped_ppps; |
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npppd *npppd; |
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bool is_monitoring; |
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bool responding; |
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}; |
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static int npppd_ctl_who_walk_rd(struct radish *, void *); |
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static int npppd_ctl_who0 (struct npppd_ctl *, bool); |
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static void npppd_who_init (struct npppd_who *, npppd_ppp *); |
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#ifdef USE_NPPPD_PIPEX |
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static int npppd_ppp_get_pipex_stat(struct npppd_who *_this, npppd_ppp *ppp); |
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#endif |
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struct npppd_ctl * |
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npppd_ctl_create(npppd *_this) |
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{ |
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struct npppd_ctl *ctl; |
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if ((ctl = calloc(1, sizeof(struct npppd_ctl))) == NULL) |
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return (NULL); |
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ctl->npppd = _this; |
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TAILQ_INIT(&ctl->stopped_ppps); |
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return (ctl); |
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} |
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void |
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npppd_ctl_destroy(struct npppd_ctl *_this) |
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{ |
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if (_this != NULL) { |
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free(_this->started_ppp); |
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free(_this); |
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} |
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} |
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int |
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npppd_ctl_who(struct npppd_ctl *_this) |
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{ |
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return (npppd_ctl_who0(_this, false)); |
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} |
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int |
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npppd_ctl_monitor(struct npppd_ctl *_this) |
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{ |
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_this->is_monitoring = true; |
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return (0); |
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} |
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int |
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npppd_ctl_who_and_monitor(struct npppd_ctl *_this) |
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{ |
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return (npppd_ctl_who0(_this, true)); |
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} |
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static int |
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npppd_ctl_who0(struct npppd_ctl *_this, bool is_monitoring) |
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{ |
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_this->is_monitoring = is_monitoring; |
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_this->responding = true; |
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if (rd_walktree(_this->npppd->rd, npppd_ctl_who_walk_rd, _this) != 0) |
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return (-1); |
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return (0); |
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} |
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int |
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npppd_ctl_add_started_ppp_id(struct npppd_ctl *_this, u_int ppp_id) |
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{ |
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int started_ppp_siz; |
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u_int *started_ppp; |
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if (!_this->is_monitoring && !_this->responding) |
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return (-1); |
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if (_this->started_ppp_pos + 1 >= _this->started_ppp_siz) { |
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started_ppp_siz = _this->started_ppp_siz + 128; |
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started_ppp = reallocarray(_this->started_ppp, |
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started_ppp_siz, sizeof(u_int)); |
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if (started_ppp == NULL) |
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return (-1); |
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_this->started_ppp = started_ppp; |
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_this->started_ppp_siz = started_ppp_siz; |
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} |
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_this->started_ppp[_this->started_ppp_pos++] = ppp_id; |
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/* reset the event */ |
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return (0); |
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} |
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int |
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npppd_ctl_add_stopped_ppp(struct npppd_ctl *_this, npppd_ppp *ppp) |
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{ |
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struct stopped_ppp *stopped; |
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if (!_this->is_monitoring) |
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return (-1); |
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if ((stopped = malloc(sizeof(struct stopped_ppp))) == NULL) { |
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log_warn("malloc() failed in %s()", __func__); |
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return (-1); |
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} |
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npppd_who_init(&stopped->ppp_who, ppp); |
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TAILQ_INSERT_TAIL(&_this->stopped_ppps, stopped, entry); |
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return (0); |
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} |
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static int |
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npppd_ctl_who_walk_rd(struct radish *rd, void *ctx) |
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{ |
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struct npppd_ctl *_this = ctx; |
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struct sockaddr_npppd *snp; |
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npppd_ppp *ppp; |
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snp = rd->rd_rtent; |
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if (snp->snp_type == SNP_PPP) { |
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ppp = snp->snp_data_ptr; |
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if (npppd_ctl_add_started_ppp_id(_this, ppp->id) != 0) |
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return (-1); |
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} |
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return (0); |
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} |
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int |
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npppd_ctl_disconnect(struct npppd_ctl *_this, u_int *ppp_id, int count) |
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{ |
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int i, n; |
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npppd_ppp *ppp; |
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for (n = 0, i = 0; i < count; i++) { |
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if ((ppp = npppd_get_ppp_by_id(_this->npppd, ppp_id[i])) |
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!= NULL) { |
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ppp_stop(ppp, NULL); |
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n++; |
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} |
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} |
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return (n); |
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} |
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int |
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npppd_ctl_imsg_compose(struct npppd_ctl *_this, struct imsgbuf *ibuf) |
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{ |
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int i, cnt; |
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u_char pktbuf[MAX_IMSGSIZE - IMSG_HEADER_SIZE]; |
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struct npppd_who_list *who_list; |
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npppd_ppp *ppp; |
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struct stopped_ppp *e, *t; |
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if (ibuf->w.queued) |
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return (0); |
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cnt = 0; |
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if (!TAILQ_EMPTY(&_this->stopped_ppps)) { |
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who_list = (struct npppd_who_list *)pktbuf; |
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who_list->more_data = 0; |
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TAILQ_FOREACH_SAFE(e, &_this->stopped_ppps, entry, t) { |
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if (offsetof(struct npppd_who_list, entry[cnt + 1]) |
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> sizeof(pktbuf)) { |
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who_list->more_data = 1; |
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break; |
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} |
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TAILQ_REMOVE(&_this->stopped_ppps, e, entry); |
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memcpy(&who_list->entry[cnt], &e->ppp_who, |
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sizeof(who_list->entry[0])); |
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cnt++; |
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free(e); |
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} |
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who_list->entry_count = cnt; |
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if (imsg_compose(ibuf, IMSG_PPP_STOP, 0, 0, -1, pktbuf, |
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offsetof(struct npppd_who_list, entry[cnt])) == -1) |
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return (-1); |
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return (0); |
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} |
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if (_this->responding || _this->started_ppp_pos > 0) { |
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who_list = (struct npppd_who_list *)pktbuf; |
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who_list->more_data = 0; |
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for (cnt = 0, i = 0; i < _this->started_ppp_pos; i++) { |
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if (offsetof(struct npppd_who_list, entry[cnt + 1]) |
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> sizeof(pktbuf)) { |
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who_list->more_data = 1; |
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break; |
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} |
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if ((ppp = npppd_get_ppp_by_id(_this->npppd, |
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_this->started_ppp[i])) == NULL) |
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/* may be disconnected */ |
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continue; |
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npppd_who_init(&who_list->entry[cnt], ppp); |
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cnt++; |
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} |
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who_list->entry_count = cnt; |
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if (imsg_compose(ibuf, IMSG_PPP_START, 0, 0, -1, pktbuf, |
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offsetof(struct npppd_who_list, entry[cnt])) == -1) |
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return (-1); |
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if (_this->started_ppp_pos > i) |
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memmove(&_this->started_ppp[0], |
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&_this->started_ppp[i], |
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sizeof(u_int) * |
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(_this->started_ppp_pos - i)); |
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_this->started_ppp_pos -= i; |
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if (who_list->more_data == 0) |
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_this->responding = false; |
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return (0); |
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} |
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return (0); |
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} |
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static void |
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npppd_who_init(struct npppd_who *_this, npppd_ppp *ppp) |
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{ |
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struct timespec curr_time; |
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npppd_auth_base *realm = ppp->realm; |
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npppd_iface *iface = ppp_iface(ppp); |
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strlcpy(_this->username, ppp->username, sizeof(_this->username)); |
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_this->time = ppp->start_time; |
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clock_gettime(CLOCK_MONOTONIC, &curr_time); |
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_this->duration_sec = curr_time.tv_sec - ppp->start_monotime; |
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strlcpy(_this->tunnel_proto, npppd_ppp_tunnel_protocol_name( |
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ppp->pppd, ppp), sizeof(_this->tunnel_proto)); |
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_this->tunnel_peer.peer_in4.sin_family = AF_UNSPEC; |
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if (((struct sockaddr *)&ppp->phy_info)->sa_len > 0) { |
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memcpy(&_this->tunnel_peer, &ppp->phy_info, |
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MINIMUM(sizeof(_this->tunnel_peer), |
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((struct sockaddr *)&ppp->phy_info)->sa_len)); |
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} |
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strlcpy(_this->ifname, iface->ifname, sizeof(_this->ifname)); |
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if (realm == NULL) |
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_this->rlmname[0] = '\0'; |
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else |
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strlcpy(_this->rlmname, npppd_auth_get_name(realm), |
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sizeof(_this->rlmname)); |
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_this->framed_ip_address = ppp->acct_framed_ip_address; |
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_this->ipackets = ppp->ipackets; |
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_this->opackets = ppp->opackets; |
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_this->ierrors = ppp->ierrors; |
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_this->oerrors = ppp->oerrors; |
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_this->ibytes = ppp->ibytes; |
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_this->obytes = ppp->obytes; |
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_this->ppp_id = ppp->id; |
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_this->mru = ppp->peer_mru; |
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#ifdef USE_NPPPD_PIPEX |
303 |
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if (ppp->pipex_enabled != 0) { |
304 |
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if (npppd_ppp_get_pipex_stat(_this, ppp) != 0) { |
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log_warn( |
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"npppd_ppp_get_pipex_stat() failed in %s", |
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__func__); |
308 |
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} |
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} |
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#endif |
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} |
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313 |
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#ifdef USE_NPPPD_PIPEX |
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static int |
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npppd_ppp_get_pipex_stat(struct npppd_who *_this, npppd_ppp *ppp) |
316 |
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{ |
317 |
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npppd_iface *iface = ppp_iface(ppp); |
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struct pipex_session_stat_req req; |
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#ifdef USE_NPPPD_PPPOE |
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pppoe_session *pppoe; |
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#endif |
322 |
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#ifdef USE_NPPPD_PPTP |
323 |
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pptp_call *pptp; |
324 |
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#endif |
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#ifdef USE_NPPPD_L2TP |
326 |
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l2tp_call *l2tp; |
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#endif |
328 |
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329 |
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if (ppp->pipex_enabled == 0) |
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return 0; |
331 |
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332 |
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memset(&req, 0, sizeof(req)); |
333 |
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switch(ppp->tunnel_type) { |
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#ifdef USE_NPPPD_PPPOE |
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case NPPPD_TUNNEL_PPPOE: |
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pppoe = (pppoe_session *)ppp->phy_context; |
337 |
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338 |
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/* PPPOE specific information */ |
339 |
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req.psr_protocol = PIPEX_PROTO_PPPOE; |
340 |
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req.psr_session_id = pppoe->session_id; |
341 |
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break; |
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#endif |
343 |
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#ifdef USE_NPPPD_PPTP |
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case NPPPD_TUNNEL_PPTP: |
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pptp = (pptp_call *)ppp->phy_context; |
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347 |
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/* PPTP specific information */ |
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req.psr_session_id = pptp->id; |
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req.psr_protocol = PIPEX_PROTO_PPTP; |
350 |
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break; |
351 |
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#endif |
352 |
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#ifdef USE_NPPPD_L2TP |
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case NPPPD_TUNNEL_L2TP: |
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l2tp = (l2tp_call *)ppp->phy_context; |
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356 |
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/* L2TP specific information */ |
357 |
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req.psr_session_id = l2tp->session_id; |
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req.psr_protocol = PIPEX_PROTO_L2TP; |
359 |
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break; |
360 |
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#endif |
361 |
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default: |
362 |
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errno = EINVAL; |
363 |
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return 1; |
364 |
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} |
365 |
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|
366 |
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/* update statistics in kernel */ |
367 |
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if (ioctl(iface->devf, PIPEXGSTAT, &req) != 0) |
368 |
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return 1; |
369 |
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|
370 |
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_this->ipackets += req.psr_stat.ipackets; |
371 |
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_this->opackets += req.psr_stat.opackets; |
372 |
|
|
_this->ierrors += req.psr_stat.ierrors; |
373 |
|
|
_this->oerrors += req.psr_stat.oerrors; |
374 |
|
|
_this->ibytes += req.psr_stat.ibytes; |
375 |
|
|
_this->obytes += req.psr_stat.obytes; |
376 |
|
|
|
377 |
|
|
return 0; |
378 |
|
|
} |
379 |
|
|
#endif |