211 lines
4.1 KiB
C
211 lines
4.1 KiB
C
/* $Id: isdn_dwabclib.c,v 1.3 2003/03/11 14:03:43 paul Exp $
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* $Log: isdn_dwabclib.c,v $
|
|
* Revision 1.3 2003/03/11 14:03:43 paul
|
|
* Using sys_errlist[] is deprecated.
|
|
*
|
|
* Revision 1.2 2001/03/01 14:59:15 paul
|
|
* Various patches to fix errors when using the newest glibc,
|
|
* replaced use of insecure tempnam() function
|
|
* and to remove warnings etc.
|
|
*
|
|
* Revision 1.1 1999/11/07 22:04:05 detabc
|
|
* add dwabc-udpinfo-utilitys in isdnctrl
|
|
*
|
|
*/
|
|
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <malloc.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <sys/time.h>
|
|
#include <netinet/in.h>
|
|
#include <netdb.h>
|
|
|
|
|
|
#define RXRSZ 1500
|
|
|
|
|
|
static int txrx_udp_socket(char *dest,char *em,char *buf,int bytes)
|
|
/*****************************************************************
|
|
|
|
sizeof(*em) must be >= 1500 bytes
|
|
|
|
returns:
|
|
|
|
>= 0 readed bytes from isdn-link-level peer
|
|
< 0 -errno
|
|
|
|
*******************************************************************/
|
|
{
|
|
struct hostent *he = NULL;
|
|
short po = 0;
|
|
int sock = -1;
|
|
struct sockaddr_in SooooK, *ms;
|
|
|
|
ms = &SooooK;
|
|
|
|
if(dest == NULL || em == NULL) {
|
|
|
|
sprintf(em,"No Destination-Addr or error-pointer defined");
|
|
return(-9999);
|
|
}
|
|
|
|
if((he = gethostbyname(dest)) == NULL) {
|
|
|
|
sprintf(em,"gethostbyaddr(%s) failt errno %d",dest,errno);
|
|
err:;
|
|
|
|
if(sock > -1)
|
|
close(sock);
|
|
|
|
sprintf(em + strlen(em)," (%s)",strerror(errno));
|
|
|
|
return(-errno);
|
|
}
|
|
|
|
if((sock = socket(AF_INET,SOCK_DGRAM,0)) < 0) {
|
|
|
|
sprintf(em,"socket creat faild errno %d",errno);
|
|
goto err;
|
|
}
|
|
|
|
memset((void *)ms,0,sizeof(*ms));
|
|
ms->sin_family = he->h_addrtype;
|
|
|
|
errno = 8888;
|
|
|
|
for(po = 3999; po >= 0; po--) {
|
|
|
|
ms->sin_port = htons(20000+po);
|
|
|
|
if(!bind(sock, (struct sockaddr *)ms, sizeof(*ms)))
|
|
break;
|
|
}
|
|
|
|
if(po < 0) {
|
|
|
|
sprintf(em,"cannot bind socket to (23999-20000)");
|
|
goto err;
|
|
}
|
|
|
|
memset((void *)ms,0,sizeof(*ms));
|
|
ms->sin_family = he->h_addrtype;
|
|
ms->sin_port = htons(25001);
|
|
memcpy(&ms->sin_addr.s_addr,*(he->h_addr_list),he->h_length);
|
|
|
|
if(sendto(sock,buf,bytes,0,(struct sockaddr *)ms,sizeof(*ms)) != bytes) {
|
|
|
|
sprintf(em,"sendto <%s> failt errno %d",dest,errno);
|
|
goto err;
|
|
}
|
|
|
|
{
|
|
fd_set rs;
|
|
struct timeval tv;
|
|
|
|
memset(&rs,0,sizeof(rs));
|
|
FD_SET(sock,&rs);
|
|
|
|
bytes = 0;
|
|
tv.tv_sec = 3;
|
|
tv.tv_usec = 0;
|
|
|
|
if((bytes = select(sock+1,&rs,NULL,NULL,&tv)) > 0) {
|
|
|
|
if(FD_ISSET(sock,&rs)) {
|
|
|
|
if((bytes = read(sock,em,RXRSZ)) < 0) {
|
|
|
|
sprintf(em,"read from socket failt errno %d",errno);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
} else if(bytes < 0) {
|
|
|
|
sprintf(em,"select failt errno %d",errno);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
close(sock);
|
|
return(bytes);
|
|
}
|
|
|
|
|
|
static int do_udp(char *dest,char **errm,int todo)
|
|
{
|
|
int r = 0;
|
|
char em[RXRSZ];
|
|
char sb[2];
|
|
|
|
sb[0] = sb[1] = todo;
|
|
todo++;
|
|
|
|
if((r = txrx_udp_socket(dest,em,sb,2)) >= 2) {
|
|
|
|
if(em[0] == todo && em[1] == todo)
|
|
return(1);
|
|
|
|
} else if(r < 0) {
|
|
|
|
if(errm != NULL) {
|
|
|
|
if((*errm = (char *)malloc(strlen(em)+1)) != NULL)
|
|
strcpy(*errm,em);
|
|
}
|
|
|
|
return(-r);
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
|
|
|
|
int isdn_udp_isisdn(char *dest, char **errm)
|
|
{
|
|
return(do_udp(dest,errm,0x28));
|
|
}
|
|
|
|
int isdn_udp_online(char *dest, char **errm)
|
|
{
|
|
return(do_udp(dest,errm,0x30));
|
|
}
|
|
|
|
int isdn_udp_dial(char *dest, char **errm)
|
|
{
|
|
return(do_udp(dest,errm,0x32));
|
|
}
|
|
|
|
int isdn_udp_hangup(char *dest, char **errm)
|
|
{
|
|
return(do_udp(dest,errm,0x2a));
|
|
}
|
|
|
|
int isdn_udp_clear_ggau(char *dest, char **errm)
|
|
{
|
|
return(do_udp(dest,errm,0x11));
|
|
}
|