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ipa-proxy: Add option to locally listen to GPRS...

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This is just the boilerplate code, the rest is not implemted yet.
This commit is contained in:
Holger Hans Peter Freyther
2010-06-09 16:20:39 +08:00
parent 7670651f49
commit 6147c5d7d0
1 changed files with 67 additions and 2 deletions
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69
openbsc/src/ipaccess/ipaccess-proxy.c
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@@ -55,6 +55,9 @@ struct ipa_proxy {
struct bsc_fd oml_listen_fd;
/* socket where we listen for incoming RSL from BTS */
struct bsc_fd rsl_listen_fd;
/* socket where we get the GPRS NS data */
struct bsc_fd gprs_ns_fd;
int gprs_port;
/* list of BTS's (struct ipa_bts_conn */
struct llist_head bts_list;
/* the BSC reconnect timer */
@@ -115,6 +118,7 @@ void *tall_bsc_ctx;
static char *listen_ipaddr;
static char *bsc_ipaddr;
static char *gprs_ns_ipaddr;
#define PROXY_ALLOC_SIZE 1200
@@ -982,6 +986,11 @@ static int listen_fd_cb(struct bsc_fd *listen_bfd, unsigned int what)
return 0;
}
static int gprs_ns_cb(struct bsc_fd *bfd, unsigned int what)
{
return 0;
}
static int make_listen_sock(struct bsc_fd *bfd, u_int16_t port, int priv_nr,
int (*cb)(struct bsc_fd *fd, unsigned int what))
{
@@ -1025,6 +1034,36 @@ static int make_listen_sock(struct bsc_fd *bfd, u_int16_t port, int priv_nr,
return 0;
}
static int make_gprs_sock(struct bsc_fd *bfd, int (*cb)(struct bsc_fd*,unsigned int))
{
struct sockaddr_in addr;
int ret;
bfd->fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
bfd->cb = cb;
bfd->when = BSC_FD_READ;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = 0;
inet_aton(listen_ipaddr, &addr.sin_addr);
ret = bind(bfd->fd, (struct sockaddr *) &addr, sizeof(addr));
if (ret < 0) {
LOGP(DINP, LOGL_ERROR,
"Could not bind n socket for IP %s with error: %s.\n",
listen_ipaddr, strerror(errno));
return -EIO;
}
ret = bsc_register_fd(bfd);
if (ret < 0) {
perror("register_listen_fd");
return ret;
}
return 0;
}
/* Actively connect to a BSC. */
static struct ipa_proxy_conn *connect_bsc(struct sockaddr_in *sa, int priv_nr, void *data)
{
@@ -1088,6 +1127,26 @@ static int ipaccess_proxy_setup(void)
ret = make_listen_sock(&ipp->rsl_listen_fd, IPA_TCP_PORT_RSL,
RSL_FROM_BTS, listen_fd_cb);
if (ret < 0)
return ret;
/* Connect the GPRS NS Socket */
if (gprs_ns_ipaddr) {
struct sockaddr_in sock;
socklen_t len = sizeof(sock);
ret = make_gprs_sock(&ipp->gprs_ns_fd, gprs_ns_cb);
if (ret < 0)
return ret;
ret = getsockname(ipp->gprs_ns_fd.fd, (struct sockaddr* ) &sock, &len);
if (ret < 0)
return ret;
ipp->gprs_port = ntohs(sock.sin_port);
LOGP(DINP, LOGL_NOTICE,
"Created GPRS NS Socket. Listening on: %s:%d\n",
inet_ntoa(sock.sin_addr), ipp->gprs_port);
}
return ret;
}
@@ -1112,7 +1171,9 @@ static void print_help()
printf(" ipaccess-proxy is a proxy BTS.\n");
printf(" -h --help. This help text.\n");
printf(" -l --listen IP. The ip to listen to.\n");
printf(" -b --bsc IP. The BSC IP address.\n\n");
printf(" -b --bsc IP. The BSC IP address.\n");
printf(" -g --gprs IP. Take GPRS NS from that IP.\n");
printf("\n");
printf(" -s --disable-color. Disable the color inside the logging message.\n");
printf(" -e --log-level number. Set the global loglevel.\n");
printf(" -T --timestamp. Prefix every log message with a timestamp.\n");
@@ -1135,10 +1196,11 @@ static void handle_options(int argc, char** argv)
{"log-level", 1, 0, 'e'},
{"listen", 1, 0, 'l'},
{"bsc", 1, 0, 'b'},
{"udp", 1, 0, 'u'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hsTe:l:b:",
c = getopt_long(argc, argv, "hsTe:l:b:g:",
long_options, &option_index);
if (c == -1)
break;
@@ -1154,6 +1216,9 @@ static void handle_options(int argc, char** argv)
case 'b':
bsc_ipaddr = optarg;
break;
case 'g':
gprs_ns_ipaddr = optarg;
break;
case 's':
log_set_use_color(stderr_target, 0);
break;