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-rw-r--r--src/input/ipaccess.c597
1 files changed, 0 insertions, 597 deletions
diff --git a/src/input/ipaccess.c b/src/input/ipaccess.c
deleted file mode 100644
index ea7f847c2..000000000
--- a/src/input/ipaccess.c
+++ /dev/null
@@ -1,597 +0,0 @@
-/* OpenBSC Abis input driver for ip.access */
-
-/* (C) 2009 by Harald Welte <laforge@gnumonks.org>
- *
- * All Rights Reserved
- *
- * 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 of the License, 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <time.h>
-#include <sys/fcntl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <arpa/inet.h>
-
-#include <openbsc/select.h>
-#include <openbsc/tlv.h>
-#include <openbsc/msgb.h>
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/abis_nm.h>
-#include <openbsc/abis_rsl.h>
-#include <openbsc/subchan_demux.h>
-#include <openbsc/e1_input.h>
-#include <openbsc/ipaccess.h>
-
-/* data structure for one E1 interface with A-bis */
-struct ia_e1_handle {
- struct bsc_fd listen_fd;
- struct bsc_fd rsl_listen_fd;
- struct gsm_network *gsmnet;
-};
-
-static struct ia_e1_handle *e1h;
-
-
-#define TS1_ALLOC_SIZE 300
-
-static const u_int8_t pong[] = { 0, 1, IPAC_PROTO_IPACCESS, IPAC_MSGT_PONG };
-static const u_int8_t id_ack[] = { 0, 1, IPAC_PROTO_IPACCESS, IPAC_MSGT_ID_ACK };
-static const u_int8_t id_req[] = { 0, 17, IPAC_PROTO_IPACCESS, IPAC_MSGT_ID_GET,
- 0x01, IPAC_IDTAG_UNIT,
- 0x01, IPAC_IDTAG_MACADDR,
- 0x01, IPAC_IDTAG_LOCATION1,
- 0x01, IPAC_IDTAG_LOCATION2,
- 0x01, IPAC_IDTAG_EQUIPVERS,
- 0x01, IPAC_IDTAG_SWVERSION,
- 0x01, IPAC_IDTAG_UNITNAME,
- 0x01, IPAC_IDTAG_SERNR,
- };
-
-static const char *idtag_names[] = {
- [IPAC_IDTAG_SERNR] = "Serial_Number",
- [IPAC_IDTAG_UNITNAME] = "Unit_Name",
- [IPAC_IDTAG_LOCATION1] = "Location_1",
- [IPAC_IDTAG_LOCATION2] = "Location_2",
- [IPAC_IDTAG_EQUIPVERS] = "Equipment_Version",
- [IPAC_IDTAG_SWVERSION] = "Software_Version",
- [IPAC_IDTAG_IPADDR] = "IP_Address",
- [IPAC_IDTAG_MACADDR] = "MAC_Address",
- [IPAC_IDTAG_UNIT] = "Unit_ID",
-};
-
-static const char *ipac_idtag_name(int tag)
-{
- if (tag >= ARRAY_SIZE(idtag_names))
- return "unknown";
-
- return idtag_names[tag];
-}
-
-static int ipac_idtag_parse(struct tlv_parsed *dec, unsigned char *buf, int len)
-{
- u_int8_t t_len;
- u_int8_t t_tag;
- u_int8_t *cur = buf;
-
- while (cur < buf + len) {
- t_len = *cur++;
- t_tag = *cur++;
-
- DEBUGPC(DMI, "%s='%s' ", ipac_idtag_name(t_tag), cur);
-
- dec->lv[t_tag].len = t_len;
- dec->lv[t_tag].val = cur;
-
- cur += t_len;
- }
- return 0;
-}
-
-struct gsm_bts *find_bts_by_unitid(struct gsm_network *net,
- u_int16_t site_id, u_int16_t bts_id)
-{
- int i;
-
- for (i = 0; i < net->num_bts; i++) {
- struct gsm_bts *bts = &net->bts[i];
-
- if (!is_ipaccess_bts(bts))
- continue;
-
- if (bts->ip_access.site_id == site_id &&
- bts->ip_access.bts_id == bts_id)
- return bts;
- }
-
- return NULL;
-}
-
-static int parse_unitid(const char *str, u_int16_t *site_id, u_int16_t *bts_id,
- u_int16_t *trx_id)
-{
- unsigned long ul;
- char *endptr;
- const char *nptr;
-
- nptr = str;
- ul = strtoul(nptr, &endptr, 10);
- if (endptr <= nptr)
- return -EINVAL;
- if (site_id)
- *site_id = ul & 0xffff;
-
- if (*endptr++ != '/')
- return -EINVAL;
-
- nptr = endptr;
- ul = strtoul(nptr, &endptr, 10);
- if (endptr <= nptr)
- return -EINVAL;
- if (bts_id)
- *bts_id = ul & 0xffff;
-
- if (*endptr++ != '/')
- return -EINVAL;
-
- nptr = endptr;
- ul = strtoul(nptr, &endptr, 10);
- if (endptr <= nptr)
- return -EINVAL;
- if (trx_id)
- *trx_id = ul & 0xffff;
-
- return 0;
-}
-
-static int ipaccess_rcvmsg(struct e1inp_line *line, struct msgb *msg,
- struct bsc_fd *bfd)
-{
- struct tlv_parsed tlvp;
- u_int8_t msg_type = *(msg->l2h);
- u_int16_t site_id, bts_id, trx_id;
- struct gsm_bts *bts;
- int ret = 0;
-
- switch (msg_type) {
- case IPAC_MSGT_PING:
- ret = write(bfd->fd, pong, sizeof(pong));
- break;
- case IPAC_MSGT_PONG:
- DEBUGP(DMI, "PONG!\n");
- break;
- case IPAC_MSGT_ID_RESP:
- DEBUGP(DMI, "ID_RESP ");
- /* parse tags, search for Unit ID */
- ipac_idtag_parse(&tlvp, (u_int8_t *)msg->l2h + 2,
- msgb_l2len(msg)-2);
- DEBUGP(DMI, "\n");
-
- if (!TLVP_PRESENT(&tlvp, IPAC_IDTAG_UNIT))
- break;
-
- /* lookup BTS, create sign_link, ... */
- parse_unitid((char *)TLVP_VAL(&tlvp, IPAC_IDTAG_UNIT),
- &site_id, &bts_id, &trx_id);
- bts = find_bts_by_unitid(e1h->gsmnet, site_id, bts_id);
- if (!bts) {
- DEBUGP(DINP, "Unable to find BTS configuration for "
- " %u/%u/%u, disconnecting\n", site_id, bts_id,
- trx_id);
- return -EIO;
- }
- DEBUGP(DINP, "Identified BTS %u/%u/%u\n", site_id, bts_id, trx_id);
- if (bfd->priv_nr == 1) {
- bts->oml_link = e1inp_sign_link_create(&line->ts[1-1],
- E1INP_SIGN_OML, bts->c0,
- 0, 0xff);
- } else if (bfd->priv_nr == 2) {
- struct e1inp_ts *e1i_ts;
- struct bsc_fd *newbfd;
-
- /* FIXME: implement this for non-0 TRX */
- bfd->data = line = bts->oml_link->ts->line;
- e1i_ts = &line->ts[2-1];
- newbfd = &e1i_ts->driver.ipaccess.fd;
-
- bts->c0->rsl_link =
- e1inp_sign_link_create(e1i_ts,
- E1INP_SIGN_RSL, bts->c0,
- 0, 0);
- /* get rid of our old temporary bfd */
- memcpy(newbfd, bfd, sizeof(*newbfd));
- bsc_unregister_fd(bfd);
- bsc_register_fd(newbfd);
- free(bfd);
- }
- break;
- case IPAC_MSGT_ID_ACK:
- DEBUGP(DMI, "ID_ACK? -> ACK!\n");
- ret = write(bfd->fd, id_ack, sizeof(id_ack));
- break;
- }
- return 0;
-}
-
-/* FIXME: this is per BTS */
-static int oml_up = 0;
-static int rsl_up = 0;
-
-static int handle_ts1_read(struct bsc_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *link;
- struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE);
- struct ipaccess_head *hh;
- int ret;
-
- if (!msg)
- return -ENOMEM;
-
- /* first read our 3-byte header */
- hh = (struct ipaccess_head *) msg->data;
- ret = recv(bfd->fd, msg->data, 3, 0);
- if (ret < 0) {
- fprintf(stderr, "recv error %s\n", strerror(errno));
- return ret;
- }
- if (ret == 0) {
- fprintf(stderr, "BTS disappeared, dead socket\n");
- e1inp_event(e1i_ts, EVT_E1_TEI_DN, 0, IPAC_PROTO_RSL);
- e1inp_event(e1i_ts, EVT_E1_TEI_DN, 0, IPAC_PROTO_OML);
- bsc_unregister_fd(bfd);
- close(bfd->fd);
- bfd->fd = -1;
- }
- msgb_put(msg, ret);
-
- /* then read te length as specified in header */
- msg->l2h = msg->data + sizeof(*hh);
- ret = recv(bfd->fd, msg->l2h, hh->len, 0);
- if (ret < hh->len) {
- fprintf(stderr, "short read!\n");
- msgb_free(msg);
- return -EIO;
- }
- msgb_put(msg, ret);
- DEBUGP(DMI, "RX %u: %s\n", ts_nr, hexdump(msgb_l2(msg), ret));
-
- if (hh->proto == IPAC_PROTO_IPACCESS) {
- ret = ipaccess_rcvmsg(line, msg, bfd);
- if (ret < 0) {
- e1inp_event(e1i_ts, EVT_E1_TEI_DN, 0, IPAC_PROTO_RSL);
- e1inp_event(e1i_ts, EVT_E1_TEI_DN, 0, IPAC_PROTO_OML);
- bsc_unregister_fd(bfd);
- close(bfd->fd);
- bfd->fd = -1;
- }
- msgb_free(msg);
- return ret;
- }
- /* BIG FAT WARNING: bfd might no longer exist here, since ipaccess_rcvmsg()
- * might have free'd it !!! */
-
- link = e1inp_lookup_sign_link(e1i_ts, 0, hh->proto);
- if (!link) {
- printf("no matching signalling link for hh->proto=0x%02x\n", hh->proto);
- msgb_free(msg);
- return -EIO;
- }
- msg->trx = link->trx;
-
- switch (hh->proto) {
- case IPAC_PROTO_RSL:
- if (!rsl_up) {
- e1inp_event(e1i_ts, EVT_E1_TEI_UP, 0, IPAC_PROTO_RSL);
- rsl_up = 1;
- }
- ret = abis_rsl_rcvmsg(msg);
- break;
- case IPAC_PROTO_OML:
- if (!oml_up) {
- e1inp_event(e1i_ts, EVT_E1_TEI_UP, 0, IPAC_PROTO_OML);
- oml_up = 1;
- }
- ret = abis_nm_rcvmsg(msg);
- break;
- default:
- DEBUGP(DMI, "Unknown IP.access protocol proto=0x%02x\n", hh->proto);
- msgb_free(msg);
- break;
- }
- return ret;
-}
-
-static int handle_ts1_write(struct bsc_fd *bfd)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
- struct e1inp_sign_link *sign_link;
- struct msgb *msg;
- struct ipaccess_head *hh;
- u_int8_t *l2_data;
- int ret;
-
- /* get the next msg for this timeslot */
- msg = e1inp_tx_ts(e1i_ts, &sign_link);
- if (!msg) {
- bfd->when &= ~BSC_FD_WRITE;
- return 0;
- }
-
- l2_data = msg->data;
-
- /* prepend the ip.access header */
- hh = (struct ipaccess_head *) msgb_push(msg, sizeof(*hh));
- hh->zero = 0;
- hh->len = msg->len - sizeof(*hh);
-
- switch (sign_link->type) {
- case E1INP_SIGN_OML:
- hh->proto = IPAC_PROTO_OML;
- break;
- case E1INP_SIGN_RSL:
- hh->proto = IPAC_PROTO_RSL;
- break;
- default:
- msgb_free(msg);
- return -EINVAL;
- }
-
- DEBUGP(DMI, "TX %u: %s\n", ts_nr, hexdump(l2_data, hh->len));
-
- ret = send(bfd->fd, msg->data, msg->len, 0);
- msgb_free(msg);
- usleep(100000);
-
- return ret;
-}
-
-/* callback from select.c in case one of the fd's can be read/written */
-static int ipaccess_fd_cb(struct bsc_fd *bfd, unsigned int what)
-{
- struct e1inp_line *line = bfd->data;
- unsigned int ts_nr = bfd->priv_nr;
- unsigned int idx = ts_nr-1;
- struct e1inp_ts *e1i_ts;
- int rc = 0;
-
- /* In case of early RSL we might not yet have a line */
-
- if (line)
- e1i_ts = &line->ts[idx];
-
- if (!line || e1i_ts->type == E1INP_TS_TYPE_SIGN) {
- if (what & BSC_FD_READ)
- rc = handle_ts1_read(bfd);
- if (what & BSC_FD_WRITE)
- rc = handle_ts1_write(bfd);
- } else
- fprintf(stderr, "unknown E1 TS type %u\n", e1i_ts->type);
-
- return rc;
-}
-
-
-static int ts_want_write(struct e1inp_ts *e1i_ts)
-{
- e1i_ts->driver.ipaccess.fd.when |= BSC_FD_WRITE;
-
- return 0;
-}
-
-struct e1inp_driver ipaccess_driver = {
- .name = "ip.access",
- .want_write = ts_want_write,
-};
-
-/* callback of the OML listening filedescriptor */
-static int listen_fd_cb(struct bsc_fd *listen_bfd, unsigned int what)
-{
- int ret;
- int idx = 0;
- struct e1inp_line *line;
- struct e1inp_ts *e1i_ts;
- struct bsc_fd *bfd;
- struct sockaddr_in sa;
- socklen_t sa_len = sizeof(sa);
-
- if (!(what & BSC_FD_READ))
- return 0;
-
- ret = accept(listen_bfd->fd, (struct sockaddr *) &sa, &sa_len);
- if (ret < 0) {
- perror("accept");
- return ret;
- }
- DEBUGP(DINP, "accept()ed new OML link from %s\n", inet_ntoa(sa.sin_addr));
-
- line = malloc(sizeof(*line));
- if (!line) {
- close(ret);
- return -ENOMEM;
- }
- memset(line, 0, sizeof(*line));
- line->driver = &ipaccess_driver;
- //line->driver_data = e1h;
- /* create virrtual E1 timeslots for signalling */
- e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN);
- e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_SIGN);
-
- e1i_ts = &line->ts[idx];
-
- bfd = &e1i_ts->driver.ipaccess.fd;
- bfd->fd = ret;
- bfd->data = line;
- bfd->priv_nr = 1;
- bfd->cb = ipaccess_fd_cb;
- bfd->when = BSC_FD_READ;
- ret = bsc_register_fd(bfd);
- if (ret < 0) {
- fprintf(stderr, "could not register FD\n");
- close(bfd->fd);
- free(line);
- return ret;
- }
-
- /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */
- ret = write(bfd->fd, id_req, sizeof(id_req));
-
- return e1inp_line_register(line);
-}
-
-static int rsl_listen_fd_cb(struct bsc_fd *listen_bfd, unsigned int what)
-{
- struct sockaddr_in sa;
- socklen_t sa_len = sizeof(sa);
- struct bsc_fd *bfd = malloc(sizeof(*bfd));
- int ret;
-
- if (!(what & BSC_FD_READ))
- return 0;
-
- /* Some BTS has connected to us, but we don't know yet which line
- * (as created by the OML link) to associate it with. Thus, we
- * aloocate a temporary bfd until we have received ID from BTS */
-
- bfd->fd = accept(listen_bfd->fd, (struct sockaddr *) &sa, &sa_len);
- if (bfd->fd < 0) {
- perror("accept");
- return bfd->fd;
- }
- DEBUGP(DINP, "accept()ed new RSL link from %s\n", inet_ntoa(sa.sin_addr));
- bfd->priv_nr = 2;
- bfd->cb = ipaccess_fd_cb;
- bfd->when = BSC_FD_READ;
- ret = bsc_register_fd(bfd);
- if (ret < 0) {
- fprintf(stderr, "could not register FD\n");
- close(bfd->fd);
- free(bfd);
- return ret;
- }
- /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */
- ret = write(bfd->fd, id_req, sizeof(id_req));
-
- return 0;
-}
-
-static int make_sock(struct bsc_fd *bfd, u_int16_t port,
- int (*cb)(struct bsc_fd *fd, unsigned int what))
-{
- struct sockaddr_in addr;
- int ret, on = 1;
-
- bfd->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- bfd->cb = cb;
- bfd->when = BSC_FD_READ;
- //bfd->data = line;
-
- memset(&addr, 0, sizeof(addr));
- addr.sin_family = AF_INET;
- addr.sin_port = htons(port);
- addr.sin_addr.s_addr = INADDR_ANY;
-
- setsockopt(bfd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
-
- ret = bind(bfd->fd, (struct sockaddr *) &addr, sizeof(addr));
- if (ret < 0) {
- fprintf(stderr, "could not bind l2 socket %s\n",
- strerror(errno));
- return -EIO;
- }
-
- ret = listen(bfd->fd, 1);
- if (ret < 0) {
- perror("listen");
- return ret;
- }
-
- ret = bsc_register_fd(bfd);
- if (ret < 0) {
- perror("register_listen_fd");
- return ret;
- }
- return 0;
-}
-
-/* Actively connect to a BTS. Currently used by ipaccess-config.c */
-int ipaccess_connect(struct e1inp_line *line, struct sockaddr_in *sa)
-{
- struct e1inp_ts *e1i_ts = &line->ts[0];
- struct bsc_fd *bfd = &e1i_ts->driver.ipaccess.fd;
- int ret, on = 1;
-
- bfd->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- bfd->cb = ipaccess_fd_cb;
- bfd->when = BSC_FD_READ | BSC_FD_WRITE;
- bfd->data = line;
- bfd->priv_nr = 1;
-
- setsockopt(bfd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
-
- ret = connect(bfd->fd, (struct sockaddr *) sa, sizeof(*sa));
- if (ret < 0) {
- fprintf(stderr, "could not connect socket\n");
- close(bfd->fd);
- return ret;
- }
-
- ret = bsc_register_fd(bfd);
- if (ret < 0) {
- close(bfd->fd);
- return ret;
- }
-
- line->driver = &ipaccess_driver;
-
- return e1inp_line_register(line);
-}
-
-int ipaccess_setup(struct gsm_network *gsmnet)
-{
- int ret;
-
- /* register the driver with the core */
- /* FIXME: do this in the plugin initializer function */
- ret = e1inp_driver_register(&ipaccess_driver);
- if (ret)
- return ret;
-
- e1h = malloc(sizeof(*e1h));
- memset(e1h, 0, sizeof(*e1h));
- e1h->gsmnet = gsmnet;
-
- /* Listen for OML connections */
- ret = make_sock(&e1h->listen_fd, 3002, listen_fd_cb);
- if (ret < 0)
- return ret;
-
- /* Listen for RSL connections */
- ret = make_sock(&e1h->rsl_listen_fd, 3003, rsl_listen_fd_cb);
-
- return ret;
-}