528 lines
16 KiB
C
528 lines
16 KiB
C
/*
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* Copyright (c) 2007-2014, Anthony Minessale II, Nenad Corbic
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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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*
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* * 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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*
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* * 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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* * Neither the name of the original author; nor the names of any contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#include "openzap.h"
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#include <sangoma_boost_client.h>
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#ifndef HAVE_GETHOSTBYNAME_R
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extern int gethostbyname_r (const char *__name,
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struct hostent *__result_buf,
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char *__buf, size_t __buflen,
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struct hostent **__result,
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int *__h_errnop);
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#endif
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struct sangomabc_map {
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uint32_t event_id;
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const char *name;
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};
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static struct sangomabc_map sangomabc_table[] = {
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{SIGBOOST_EVENT_CALL_START, "CALL_START"},
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{SIGBOOST_EVENT_CALL_START_ACK, "CALL_START_ACK"},
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{SIGBOOST_EVENT_CALL_START_NACK, "CALL_START_NACK"},
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{SIGBOOST_EVENT_CALL_PROGRESS, "CALL PROGRESS"},
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{SIGBOOST_EVENT_CALL_START_NACK_ACK, "CALL_START_NACK_ACK"},
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{SIGBOOST_EVENT_CALL_ANSWERED, "CALL_ANSWERED"},
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{SIGBOOST_EVENT_CALL_STOPPED, "CALL_STOPPED"},
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{SIGBOOST_EVENT_CALL_STOPPED_ACK, "CALL_STOPPED_ACK"},
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{SIGBOOST_EVENT_SYSTEM_RESTART, "SYSTEM_RESTART"},
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{SIGBOOST_EVENT_SYSTEM_RESTART_ACK, "SYSTEM_RESTART_ACK"},
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{SIGBOOST_EVENT_HEARTBEAT, "HEARTBEAT"},
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{SIGBOOST_EVENT_INSERT_CHECK_LOOP, "LOOP START"},
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{SIGBOOST_EVENT_REMOVE_CHECK_LOOP, "LOOP STOP"},
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{SIGBOOST_EVENT_AUTO_CALL_GAP_ABATE, "AUTO_CALL_GAP_ABATE"},
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{SIGBOOST_EVENT_DIGIT_IN, "DIGIT_IN"}
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};
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static void sangomabc_print_event_call(sangomabc_connection_t *mcon, sangomabc_event_t *event, int priority, int dir, const char *file, const char *func, int line)
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{
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if (event->event_id == SIGBOOST_EVENT_HEARTBEAT)
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return;
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zap_log(file, func, line, ZAP_LOG_LEVEL_WARNING, "%s EVENT: %s:(%X) [w%dg%d] CSid=%i Seq=%i Cn=[%s] Cd=[%s] Ci=[%s] Rdnis=[%s]\n",
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dir ? "TX":"RX",
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sangomabc_event_id_name(event->event_id),
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event->event_id,
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event->span+1,
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event->chan+1,
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event->call_setup_id,
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event->fseqno,
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strlen(event->calling_name)?event->calling_name:"N/A",
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(event->called_number_digits_count ? (char *) event->called_number_digits : "N/A"),
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(event->calling_number_digits_count ? (char *) event->calling_number_digits : "N/A"),
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event->isup_in_rdnis);
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}
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static void sangomabc_print_event_short(sangomabc_connection_t *mcon, sangomabc_short_event_t *event, int priority, int dir, const char *file, const char *func, int line)
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{
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if (event->event_id == SIGBOOST_EVENT_HEARTBEAT)
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return;
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zap_log(file, func, line, ZAP_LOG_LEVEL_WARNING, "%s EVENT (%s): %s:(%X) [w%dg%d] Rc=%i CSid=%i Seq=%i \n",
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dir ? "TX":"RX",
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priority ? "P":"N",
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sangomabc_event_id_name(event->event_id),
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event->event_id,
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event->span+1,
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event->chan+1,
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event->release_cause,
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event->call_setup_id,
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event->fseqno);
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}
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static int create_conn_socket(sangomabc_connection_t *mcon, char *local_ip, int local_port, char *ip, int port)
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{
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int rc;
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struct hostent *result, *local_result;
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char buf[512], local_buf[512];
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int err = 0, local_err = 0;
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memset(&mcon->remote_hp, 0, sizeof(mcon->remote_hp));
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memset(&mcon->local_hp, 0, sizeof(mcon->local_hp));
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#ifdef HAVE_NETINET_SCTP_H
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zap_log(ZAP_LOG_DEBUG, "Creating SCTP socket L=%s:%d R=%s:%d\n",
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local_ip, local_port, ip, port);
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mcon->socket = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
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#else
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zap_log(ZAP_LOG_DEBUG, "Creating UDP socket L=%s:%d R=%s:%d\n",
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local_ip, local_port, ip, port);
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mcon->socket = socket(AF_INET, SOCK_DGRAM, 0);
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#endif
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if (mcon->socket >= 0) {
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int flag;
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flag = 1;
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#ifdef HAVE_GETHOSTBYNAME_R_FIVE
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gethostbyname_r(ip, &mcon->remote_hp, buf, sizeof(buf), &err);
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gethostbyname_r(local_ip, &mcon->local_hp, local_buf, sizeof(local_buf), &local_err);
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if (!err && !local_err) {
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#else
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gethostbyname_r(ip, &mcon->remote_hp, buf, sizeof(buf), &result, &err);
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gethostbyname_r(local_ip, &mcon->local_hp, local_buf, sizeof(local_buf), &local_result, &local_err);
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if (result && local_result) {
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#endif
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mcon->remote_addr.sin_family = mcon->remote_hp.h_addrtype;
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memcpy((char *) &mcon->remote_addr.sin_addr.s_addr, mcon->remote_hp.h_addr_list[0], mcon->remote_hp.h_length);
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mcon->remote_addr.sin_port = htons(port);
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mcon->local_addr.sin_family = mcon->local_hp.h_addrtype;
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memcpy((char *) &mcon->local_addr.sin_addr.s_addr, mcon->local_hp.h_addr_list[0], mcon->local_hp.h_length);
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mcon->local_addr.sin_port = htons(local_port);
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#ifdef HAVE_NETINET_SCTP_H
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setsockopt(mcon->socket, IPPROTO_SCTP, SCTP_NODELAY,
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(char *)&flag, sizeof(int));
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#endif
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if ((rc = bind(mcon->socket,
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(struct sockaddr *) &mcon->local_addr,
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sizeof(mcon->local_addr))) < 0) {
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close(mcon->socket);
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mcon->socket = -1;
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} else {
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#ifdef HAVE_NETINET_SCTP_H
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rc=listen(mcon->socket, 100);
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if (rc) {
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close(mcon->socket);
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mcon->socket = -1;
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}
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#endif
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}
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}
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}
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zap_mutex_create(&mcon->mutex);
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return mcon->socket;
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}
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int sangomabc_connection_close(sangomabc_connection_t *mcon)
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{
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if (mcon->socket > -1) {
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close(mcon->socket);
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}
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if (mcon->mutex) {
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zap_mutex_lock(mcon->mutex);
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zap_mutex_unlock(mcon->mutex);
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zap_mutex_destroy(&mcon->mutex);
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}
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memset(mcon, 0, sizeof(*mcon));
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mcon->socket = -1;
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return 0;
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}
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int sangomabc_connection_open(sangomabc_connection_t *mcon, char *local_ip, int local_port, char *ip, int port)
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{
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create_conn_socket(mcon, local_ip, local_port, ip, port);
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return mcon->socket;
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}
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int sangomabc_exec_command(sangomabc_connection_t *mcon, int span, int chan, int id, int cmd, int cause, int flags)
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{
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sangomabc_short_event_t oevent;
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int retry = 5;
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sangomabc_event_init(&oevent, cmd, chan, span);
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oevent.release_cause = cause;
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oevent.flags = flags;
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if (cmd == SIGBOOST_EVENT_SYSTEM_RESTART || cmd == SIGBOOST_EVENT_SYSTEM_RESTART_ACK) {
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mcon->rxseq_reset = 1;
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mcon->txseq = 0;
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mcon->rxseq = 0;
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mcon->txwindow = 0;
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}
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if (id >= 0) {
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oevent.call_setup_id = id;
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}
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while (sangomabc_connection_write(mcon, (sangomabc_event_t*)&oevent) <= 0) {
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if (--retry <= 0) {
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zap_log(ZAP_LOG_CRIT, "Failed to tx on ISUP socket: %s\n", strerror(errno));
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return -1;
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} else {
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zap_log(ZAP_LOG_WARNING, "Failed to tx on ISUP socket: %s :retry %i\n", strerror(errno), retry);
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zap_sleep(1);
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}
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}
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return 0;
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}
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int sangomabc_exec_commandp(sangomabc_connection_t *pcon, int span, int chan, int id, int cmd, int cause)
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{
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sangomabc_short_event_t oevent;
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int retry = 5;
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sangomabc_event_init(&oevent, cmd, chan, span);
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oevent.release_cause = cause;
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if (id >= 0) {
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oevent.call_setup_id = id;
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}
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while (sangomabc_connection_writep(pcon, (sangomabc_event_t*)&oevent) <= 0) {
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if (--retry <= 0) {
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zap_log(ZAP_LOG_CRIT, "Failed to tx on ISUP socket: %s\n", strerror(errno));
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return -1;
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} else {
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zap_log(ZAP_LOG_WARNING, "Failed to tx on ISUP socket: %s :retry %i\n", strerror(errno), retry);
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zap_sleep(1);
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}
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}
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return 0;
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}
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sangomabc_event_t *__sangomabc_connection_read(sangomabc_connection_t *mcon, int iteration, const char *file, const char *func, int line)
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{
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unsigned int fromlen = sizeof(struct sockaddr_in);
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int bytes = 0;
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int msg_ok = 0;
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bytes = recvfrom(mcon->socket, &mcon->event, sizeof(mcon->event), MSG_DONTWAIT,
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(struct sockaddr *) &mcon->local_addr, &fromlen);
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if (bytes <= 0) {
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return NULL;
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}
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if (mcon->event.version != SIGBOOST_VERSION) {
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zap_log(ZAP_LOG_CRIT, "Invalid Boost Version %i Expecting %i\n",mcon->event.version, SIGBOOST_VERSION);
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}
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/* Must check for < 0 cannot rely on bytes > MIN_SIZE_... compiler issue */
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if (bytes < 0) {
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msg_ok=0;
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} else if ((bytes >= MIN_SIZE_CALLSTART_MSG) && boost_full_event(mcon->event.event_id)) {
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msg_ok=1;
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} else if (bytes == sizeof(sangomabc_short_event_t)) {
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msg_ok=1;
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} else {
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msg_ok=0;
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}
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if (msg_ok){
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if (sangomabc_test_flag(mcon, MSU_FLAG_DOWN)) {
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if (mcon->event.event_id != SIGBOOST_EVENT_SYSTEM_RESTART &&
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mcon->event.event_id != SIGBOOST_EVENT_SYSTEM_RESTART_ACK &&
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mcon->event.event_id != SIGBOOST_EVENT_HEARTBEAT) {
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zap_log(file, func, line, ZAP_LOG_LEVEL_WARNING, "Not reading packets when connection is down. [%s]\n",
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sangomabc_event_id_name(mcon->event.event_id));
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return NULL;
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}
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}
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if (boost_full_event(mcon->event.event_id)) {
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sangomabc_print_event_call(mcon, &mcon->event, 0, 0, file, func, line);
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} else {
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sangomabc_print_event_short(mcon, (sangomabc_short_event_t*)&mcon->event, 0, 0, file, func, line);
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}
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#if 0
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/* NC: NOT USED ANY MORE */
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if (mcon->rxseq_reset) {
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//if (mcon->event.event_id == SIGBOOST_EVENT_SYSTEM_RESTART_ACK) {
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zap_log(ZAP_LOG_DEBUG, "Rx sync ok\n");
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mcon->rxseq = mcon->event.fseqno;
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return &mcon->event;
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//}
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errno=EAGAIN;
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zap_log(ZAP_LOG_DEBUG, "Waiting for rx sync...\n");
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return NULL;
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}
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#endif
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mcon->txwindow = mcon->txseq - mcon->event.bseqno;
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mcon->rxseq++;
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#if 0
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if (mcon->rxseq != mcon->event.fseqno) {
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zap_log(ZAP_LOG_CRIT, "Invalid Sequence Number Expect=%i Rx=%i\n", mcon->rxseq, mcon->event.fseqno);
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return NULL;
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}
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#endif
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return &mcon->event;
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} else {
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if (iteration == 0) {
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zap_log(ZAP_LOG_CRIT, "NC - Invalid Event length from boost rxlen=%i evsz=%i\n", bytes, sizeof(mcon->event));
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return NULL;
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}
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}
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return NULL;
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}
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sangomabc_event_t *__sangomabc_connection_readp(sangomabc_connection_t *mcon, int iteration, const char *file, const char *func, int line)
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{
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unsigned int fromlen = sizeof(struct sockaddr_in);
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int bytes = 0;
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bytes = recvfrom(mcon->socket, &mcon->event, sizeof(mcon->event), MSG_DONTWAIT, (struct sockaddr *) &mcon->local_addr, &fromlen);
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if (bytes <= 0) {
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return NULL;
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}
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if (mcon->event.version != SIGBOOST_VERSION) {
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zap_log(ZAP_LOG_CRIT, "Invalid Boost Version %i Expecting %i\n",mcon->event.version, SIGBOOST_VERSION);
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}
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if (bytes == sizeof(sangomabc_short_event_t)) {
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if (boost_full_event(mcon->event.event_id)) {
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sangomabc_print_event_call(mcon, &mcon->event, 1, 0, file, func, line);
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} else {
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sangomabc_print_event_short(mcon, (sangomabc_short_event_t*)&mcon->event, 1, 0, file, func, line);
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}
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return &mcon->event;
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} else {
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if (iteration == 0) {
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zap_log(ZAP_LOG_CRIT, "Critical Error: PQ Invalid Event lenght from boost rxlen=%i evsz=%i\n", bytes, sizeof(mcon->event));
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return NULL;
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}
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}
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return NULL;
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}
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int __sangomabc_connection_write(sangomabc_connection_t *mcon, sangomabc_event_t *event, const char *file, const char *func, int line)
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{
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int err;
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int event_size=MIN_SIZE_CALLSTART_MSG+event->isup_in_rdnis_size;
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if (!event || mcon->socket < 0 || !mcon->mutex) {
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zap_log(file, func, line, ZAP_LOG_LEVEL_CRIT, "Critical Error: No Event Device\n");
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return -EINVAL;
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abort();
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}
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if (event->span >= ZAP_MAX_PHYSICAL_SPANS_PER_LOGICAL_SPAN || event->chan >= ZAP_MAX_CHANNELS_PHYSICAL_SPAN ) {
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zap_log(file, func, line, ZAP_LOG_LEVEL_CRIT, "Critical Error: TX Cmd=%s Invalid Span=%i Chan=%i\n", sangomabc_event_id_name(event->event_id), event->span, event->chan);
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abort();
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return -1;
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}
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if (!boost_full_event(event->event_id)) {
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event_size=sizeof(sangomabc_short_event_t);
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}
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if (sangomabc_test_flag(mcon, MSU_FLAG_DOWN)) {
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if (event->event_id != SIGBOOST_EVENT_SYSTEM_RESTART &&
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event->event_id != SIGBOOST_EVENT_SYSTEM_RESTART_ACK &&
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event->event_id != SIGBOOST_EVENT_HEARTBEAT) {
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zap_log(file, func, line, ZAP_LOG_LEVEL_WARNING, "Not writing packets when connection is down. [%s]\n",
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sangomabc_event_id_name(event->event_id));
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return 0;
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}
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}
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zap_mutex_lock(mcon->mutex);
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if (event->event_id == SIGBOOST_EVENT_SYSTEM_RESTART_ACK) {
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mcon->txseq=0;
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mcon->rxseq=0;
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event->fseqno=0;
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} else {
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event->fseqno = mcon->txseq++;
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}
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event->bseqno = mcon->rxseq;
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event->version = SIGBOOST_VERSION;
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err = sendto(mcon->socket, event, event_size, 0, (struct sockaddr *) &mcon->remote_addr, sizeof(mcon->remote_addr));
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zap_mutex_unlock(mcon->mutex);
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if (err != event_size) {
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err = -1;
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abort();
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}
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if (boost_full_event(event->event_id)) {
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sangomabc_print_event_call(mcon, event, 0, 1, file, func, line);
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} else {
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sangomabc_print_event_short(mcon, (sangomabc_short_event_t*)event, 0, 1, file, func, line);
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}
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return err;
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}
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int __sangomabc_connection_writep(sangomabc_connection_t *mcon, sangomabc_event_t *event, const char *file, const char *func, int line)
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{
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int err;
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int event_size=sizeof(sangomabc_event_t);
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if (!event || mcon->socket < 0 || !mcon->mutex) {
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zap_log(file, func, line, ZAP_LOG_LEVEL_CRIT, "Critical Error: No Event Device\n");
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return -EINVAL;
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abort();
|
|
}
|
|
|
|
if (!boost_full_event(event->event_id)) {
|
|
event_size=sizeof(sangomabc_short_event_t);
|
|
}
|
|
|
|
zap_mutex_lock(mcon->mutex);
|
|
event->version = SIGBOOST_VERSION;
|
|
err = sendto(mcon->socket, event, event_size, 0, (struct sockaddr *) &mcon->remote_addr, sizeof(mcon->remote_addr));
|
|
zap_mutex_unlock(mcon->mutex);
|
|
|
|
if (err != event_size) {
|
|
err = -1;
|
|
abort();
|
|
}
|
|
|
|
if (boost_full_event(event->event_id)) {
|
|
sangomabc_print_event_call(mcon, event, 1, 1, file, func, line);
|
|
} else {
|
|
sangomabc_print_event_short(mcon, (sangomabc_short_event_t*)event, 1, 1, file, func, line);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
void sangomabc_call_init(sangomabc_event_t *event, const char *calling, const char *called, int setup_id)
|
|
{
|
|
memset(event, 0, sizeof(sangomabc_event_t));
|
|
event->event_id = SIGBOOST_EVENT_CALL_START;
|
|
|
|
if (calling) {
|
|
strncpy((char*)event->calling_number_digits, calling, sizeof(event->calling_number_digits)-1);
|
|
event->calling_number_digits_count = strlen(calling);
|
|
}
|
|
|
|
if (called) {
|
|
strncpy((char*)event->called_number_digits, called, sizeof(event->called_number_digits)-1);
|
|
event->called_number_digits_count = strlen(called);
|
|
}
|
|
|
|
event->call_setup_id = setup_id;
|
|
|
|
}
|
|
|
|
void sangomabc_event_init(sangomabc_short_event_t *event, sangomabc_event_id_t event_id, int chan, int span)
|
|
{
|
|
memset(event, 0, sizeof(sangomabc_short_event_t));
|
|
event->event_id = event_id;
|
|
event->chan = chan;
|
|
event->span = span;
|
|
}
|
|
|
|
const char *sangomabc_event_id_name(uint32_t event_id)
|
|
{
|
|
unsigned int x;
|
|
const char *ret = NULL;
|
|
|
|
for (x = 0 ; x < sizeof(sangomabc_table)/sizeof(struct sangomabc_map); x++) {
|
|
if (sangomabc_table[x].event_id == event_id) {
|
|
ret = sangomabc_table[x].name;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* For Emacs:
|
|
* Local Variables:
|
|
* mode:c
|
|
* indent-tabs-mode:t
|
|
* tab-width:4
|
|
* c-basic-offset:4
|
|
* End:
|
|
* For VIM:
|
|
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
|
|
*/
|
|
|