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osmo-msc
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no more need to specify local IP address to ipaccess-find 

Actually, depending on the system configuration, we don't even need to
specify the interface name or be root.
This commit is contained in:
Harald Welte 2009-08-08 11:47:20 +02:00
parent c7310385ca
commit e26d079c97
1 changed files with 13 additions and 7 deletions
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20
openbsc/src/ipaccess-find.c
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@ -33,7 +33,7 @@ static const char *ipac_idtag_name(int tag)
return idtag_names[tag];
}
static int udp_sock(char *local_ip)
static int udp_sock(const char *ifname)
{
int fd, rc, bc = 1;
struct sockaddr_in sa;
@ -42,10 +42,16 @@ static int udp_sock(char *local_ip)
if (fd < 0)
return fd;
if (ifname) {
rc = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, ifname,
strlen(ifname));
if (rc < 0)
goto err;
}
sa.sin_family = AF_INET;
sa.sin_port = htons(3006);
sa.sin_addr.s_addr = INADDR_ANY;
inet_aton(local_ip, &sa.sin_addr);
rc = bind(fd, (struct sockaddr *)&sa, sizeof(sa));
if (rc < 0)
@ -149,21 +155,21 @@ static void timer_cb(void *_data)
int main(int argc, char **argv)
{
struct bsc_fd bfd;
char *local_ip;
char *ifname;
int rc;
printf("ipaccess-find (C) 2009 by Harald Welte\n");
printf("This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY\n\n");
if (argc < 2) {
fprintf(stderr, "please specify the _local_ IP address as argument\n");
exit(2);
fprintf(stdout, "you might need to specify the outgoing\n"
" network interface, e.g. ``%s eth0''\n", argv[0]);
}
local_ip = argv[1];
ifname = argv[1];
bfd.cb = bfd_cb;
bfd.when = BSC_FD_READ | BSC_FD_WRITE;
bfd.fd = udp_sock(local_ip);
bfd.fd = udp_sock(ifname);
if (bfd.fd < 0) {
perror("Cannot create local socket for broadcast udp");
exit(1);