move openbsc/* to repos root

This is the first step in creating this repository from the legacy openbsc.git.

Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.

Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7

1 files changed, 0 insertions, 535 deletions

diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c b/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
deleted file mode 100644
index c12b29f1f..000000000
--- a/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
+++ /dev/null
@@ -1,535 +0,0 @@
-
-/* BSC Multiplexer/NAT Utilities */
-
-/*
- * (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2010-2011 by On-Waves
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <openbsc/bsc_nat.h>
-#include <openbsc/bsc_nat_sccp.h>
-#include <openbsc/bsc_msg_filter.h>
-#include <openbsc/bsc_msc.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/debug.h>
-#include <openbsc/ipaccess.h>
-#include <openbsc/vty.h>
-
-#include <osmocom/core/linuxlist.h>
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/stats.h>
-#include <osmocom/gsm/gsm0808.h>
-#include <osmocom/gsm/ipa.h>
-
-#include <osmocom/gsm/protocol/gsm_08_08.h>
-#include <osmocom/gsm/protocol/gsm_04_11.h>
-
-#include <osmocom/sccp/sccp.h>
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <unistd.h>
-
-static const struct rate_ctr_desc bsc_cfg_ctr_description[] = {
-	[BCFG_CTR_SCCP_CONN]     = { "sccp.conn",      "SCCP Connections         "},
-	[BCFG_CTR_SCCP_CALLS]    = { "sccp.calls",     "SCCP Assignment Commands "},
-	[BCFG_CTR_NET_RECONN]    = { "net.reconnects", "Network reconnects       "},
-	[BCFG_CTR_DROPPED_SCCP]  = { "dropped.sccp",   "Dropped SCCP connections."},
-	[BCFG_CTR_DROPPED_CALLS] = { "dropped.calls",  "Dropped active calls.    "},
-	[BCFG_CTR_REJECTED_CR]   = { "rejected.cr",    "Rejected CR due filter   "},
-	[BCFG_CTR_REJECTED_MSG]  = { "rejected.msg",   "Rejected MSG due filter  "},
-	[BCFG_CTR_ILL_PACKET]    = { "rejected.ill",   "Rejected due parse error "},
-	[BCFG_CTR_CON_TYPE_LU]   = { "conn.lu",        "Conn Location Update     "},
-	[BCFG_CTR_CON_CMSERV_RQ] = { "conn.rq",        "Conn CM Service Req      "},
-	[BCFG_CTR_CON_PAG_RESP]  = { "conn.pag",       "Conn Paging Response     "},
-	[BCFG_CTR_CON_SSA]       = { "conn.ssa",       "Conn USSD                "},
-	[BCFG_CTR_CON_OTHER]     = { "conn.other",     "Conn Other               "},
-};
-
-static const struct rate_ctr_group_desc bsc_cfg_ctrg_desc = {
-	.group_name_prefix = "nat.bsc",
-	.group_description = "NAT BSC Statistics",
-	.num_ctr = ARRAY_SIZE(bsc_cfg_ctr_description),
-	.ctr_desc = bsc_cfg_ctr_description,
-	.class_id = OSMO_STATS_CLASS_PEER,
-};
-
-struct bsc_nat *bsc_nat_alloc(void)
-{
-	struct bsc_nat *nat = talloc_zero(tall_bsc_ctx, struct bsc_nat);
-	if (!nat)
-		return NULL;
-
-	nat->main_dest = talloc_zero(nat, struct bsc_msc_dest);
-	if (!nat->main_dest) {
-		talloc_free(nat);
-		return NULL;
-	}
-
-	INIT_LLIST_HEAD(&nat->sccp_connections);
-	INIT_LLIST_HEAD(&nat->bsc_connections);
-	INIT_LLIST_HEAD(&nat->paging_groups);
-	INIT_LLIST_HEAD(&nat->bsc_configs);
-	INIT_LLIST_HEAD(&nat->access_lists);
-	INIT_LLIST_HEAD(&nat->dests);
-	INIT_LLIST_HEAD(&nat->num_rewr);
-	INIT_LLIST_HEAD(&nat->num_rewr_post);
-	INIT_LLIST_HEAD(&nat->smsc_rewr);
-	INIT_LLIST_HEAD(&nat->tpdest_match);
-	INIT_LLIST_HEAD(&nat->sms_clear_tp_srr);
-	INIT_LLIST_HEAD(&nat->sms_num_rewr);
-
-	nat->stats.sccp.conn = osmo_counter_alloc("nat.sccp.conn");
-	nat->stats.sccp.calls = osmo_counter_alloc("nat.sccp.calls");
-	nat->stats.bsc.reconn = osmo_counter_alloc("nat.bsc.conn");
-	nat->stats.bsc.auth_fail = osmo_counter_alloc("nat.bsc.auth_fail");
-	nat->stats.msc.reconn = osmo_counter_alloc("nat.msc.conn");
-	nat->stats.ussd.reconn = osmo_counter_alloc("nat.ussd.conn");
-	nat->auth_timeout = 2;
-	nat->ping_timeout = 20;
-	nat->pong_timeout = 5;
-
-	llist_add(&nat->main_dest->list, &nat->dests);
-	nat->main_dest->ip = talloc_strdup(nat, "127.0.0.1");
-	nat->main_dest->port = 5000;
-
-	return nat;
-}
-
-void bsc_nat_free(struct bsc_nat *nat)
-{
-	struct bsc_config *cfg, *tmp;
-	struct bsc_msg_acc_lst *lst, *tmp_lst;
-
-	llist_for_each_entry_safe(cfg, tmp, &nat->bsc_configs, entry)
-		bsc_config_free(cfg);
-	llist_for_each_entry_safe(lst, tmp_lst, &nat->access_lists, list)
-		bsc_msg_acc_lst_delete(lst);
-
-	bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, NULL);
-	bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr_post, NULL);
-	bsc_nat_num_rewr_entry_adapt(nat, &nat->sms_clear_tp_srr, NULL);
-	bsc_nat_num_rewr_entry_adapt(nat, &nat->sms_num_rewr, NULL);
-	bsc_nat_num_rewr_entry_adapt(nat, &nat->tpdest_match, NULL);
-
-	osmo_counter_free(nat->stats.sccp.conn);
-	osmo_counter_free(nat->stats.sccp.calls);
-	osmo_counter_free(nat->stats.bsc.reconn);
-	osmo_counter_free(nat->stats.bsc.auth_fail);
-	osmo_counter_free(nat->stats.msc.reconn);
-	osmo_counter_free(nat->stats.ussd.reconn);
-	talloc_free(nat->mgcp_cfg);
-	talloc_free(nat);
-}
-
-void bsc_nat_set_msc_ip(struct bsc_nat *nat, const char *ip)
-{
-	osmo_talloc_replace_string(nat, &nat->main_dest->ip, ip);
-}
-
-struct bsc_connection *bsc_connection_alloc(struct bsc_nat *nat)
-{
-	struct bsc_connection *con = talloc_zero(nat, struct bsc_connection);
-	if (!con)
-		return NULL;
-
-	con->nat = nat;
-	osmo_wqueue_init(&con->write_queue, 100);
-	INIT_LLIST_HEAD(&con->cmd_pending);
-	INIT_LLIST_HEAD(&con->pending_dlcx);
-	return con;
-}
-
-struct bsc_config *bsc_config_alloc(struct bsc_nat *nat, const char *token,
-				    unsigned int number)
-{
-	struct bsc_config *conf = talloc_zero(nat, struct bsc_config);
-	if (!conf)
-		return NULL;
-
-	conf->token = talloc_strdup(conf, token);
-	conf->nr = number;
-	conf->nat = nat;
-	conf->max_endpoints = 32;
-	conf->paging_group = PAGIN_GROUP_UNASSIGNED;
-
-	INIT_LLIST_HEAD(&conf->lac_list);
-
-	llist_add_tail(&conf->entry, &nat->bsc_configs);
-	++nat->num_bsc;
-
-	conf->stats.ctrg = rate_ctr_group_alloc(conf, &bsc_cfg_ctrg_desc, conf->nr);
-	if (!conf->stats.ctrg) {
-		llist_del(&conf->entry);
-		talloc_free(conf);
-		return NULL;
-	}
-
-	return conf;
-}
-
-struct bsc_config *bsc_config_by_token(struct bsc_nat *nat, const char *token, int len)
-{
-	struct bsc_config *conf;
-
-	llist_for_each_entry(conf, &nat->bsc_configs, entry) {
-		/*
-		 * Add the '\0' of the token for the memcmp, the IPA messages
-		 * for some reason added null termination.
-		 */
-		const int token_len = strlen(conf->token) + 1;
-
-		if (token_len == len && memcmp(conf->token, token, token_len) == 0)
-			return conf;
-	}
-
-	return NULL;
-}
-
-void bsc_config_free(struct bsc_config *cfg)
-{
-	llist_del(&cfg->entry);
-	rate_ctr_group_free(cfg->stats.ctrg);
-	cfg->nat->num_bsc--;
-	OSMO_ASSERT(cfg->nat->num_bsc >= 0)
-	talloc_free(cfg);
-}
-
-static void _add_lac(void *ctx, struct llist_head *list, int _lac)
-{
-	struct bsc_lac_entry *lac;
-
-	llist_for_each_entry(lac, list, entry)
-		if (lac->lac == _lac)
-			return;
-
-	lac = talloc_zero(ctx, struct bsc_lac_entry);
-	if (!lac) {
-		LOGP(DNAT, LOGL_ERROR, "Failed to allocate.\n");
-		return;
-	}
-
-	lac->lac = _lac;
-	llist_add_tail(&lac->entry, list);
-}
-
-static void _del_lac(struct llist_head *list, int _lac)
-{
-	struct bsc_lac_entry *lac;
-
-	llist_for_each_entry(lac, list, entry)
-		if (lac->lac == _lac) {
-			llist_del(&lac->entry);
-			talloc_free(lac);
-			return;
-		}
-}
-
-void bsc_config_add_lac(struct bsc_config *cfg, int _lac)
-{
-	_add_lac(cfg, &cfg->lac_list, _lac);
-}
-
-void bsc_config_del_lac(struct bsc_config *cfg, int _lac)
-{
-	_del_lac(&cfg->lac_list, _lac);
-}
-
-struct bsc_nat_paging_group *bsc_nat_paging_group_create(struct bsc_nat *nat, int group)
-{
-	struct bsc_nat_paging_group *pgroup;
-
-	pgroup = talloc_zero(nat, struct bsc_nat_paging_group);
-	if (!pgroup) {
-		LOGP(DNAT, LOGL_ERROR, "Failed to allocate a paging group.\n");
-		return NULL;
-	}
-
-	pgroup->nr = group;
-	INIT_LLIST_HEAD(&pgroup->lists);
-	llist_add_tail(&pgroup->entry, &nat->paging_groups);
-	return pgroup;
-}
-
-void bsc_nat_paging_group_delete(struct bsc_nat_paging_group *pgroup)
-{
-	llist_del(&pgroup->entry);
-	talloc_free(pgroup);
-}
-
-struct bsc_nat_paging_group *bsc_nat_paging_group_num(struct bsc_nat *nat, int group)
-{
-	struct bsc_nat_paging_group *pgroup;
-
-	llist_for_each_entry(pgroup, &nat->paging_groups, entry)
-		if (pgroup->nr == group)
-			return pgroup;
-
-	return NULL;
-}
-
-void bsc_nat_paging_group_add_lac(struct bsc_nat_paging_group *pgroup, int lac)
-{
-	_add_lac(pgroup, &pgroup->lists, lac);
-}
-
-void bsc_nat_paging_group_del_lac(struct bsc_nat_paging_group *pgroup, int lac)
-{
-	_del_lac(&pgroup->lists, lac);
-}
-
-int bsc_config_handles_lac(struct bsc_config *cfg, int lac_nr)
-{
-	struct bsc_nat_paging_group *pgroup;
-	struct bsc_lac_entry *entry;
-
-	llist_for_each_entry(entry, &cfg->lac_list, entry)
-		if (entry->lac == lac_nr)
-			return 1;
-
-	/* now lookup the paging group */
-	pgroup = bsc_nat_paging_group_num(cfg->nat, cfg->paging_group);
-	if (!pgroup)
-		return 0;
-
-	llist_for_each_entry(entry, &pgroup->lists, entry)
-		if (entry->lac == lac_nr)
-			return 1;
-
-	return 0;
-}
-
-void sccp_connection_destroy(struct nat_sccp_connection *conn)
-{
-	LOGP(DNAT, LOGL_DEBUG, "Destroy 0x%x <-> 0x%x mapping for con %p\n",
-	     sccp_src_ref_to_int(&conn->real_ref),
-	     sccp_src_ref_to_int(&conn->patched_ref), conn->bsc);
-	bsc_mgcp_dlcx(conn);
-	llist_del(&conn->list_entry);
-	talloc_free(conn);
-}
-
-
-int bsc_nat_find_paging(struct msgb *msg,
-			const uint8_t **out_data, int *out_leng)
-{
-	int data_length;
-	const uint8_t *data;
-	struct tlv_parsed tp;
-
-	if (!msg->l3h || msgb_l3len(msg) < 3) {
-		LOGP(DNAT, LOGL_ERROR, "Paging message is too short.\n");
-		return -1;
-	}
-
-	tlv_parse(&tp, gsm0808_att_tlvdef(), msg->l3h + 3, msgb_l3len(msg) - 3, 0, 0);
-	if (!TLVP_PRESENT(&tp, GSM0808_IE_CELL_IDENTIFIER_LIST)) {
-		LOGP(DNAT, LOGL_ERROR, "No CellIdentifier List inside paging msg.\n");
-		return -2;
-	}
-
-	data_length = TLVP_LEN(&tp, GSM0808_IE_CELL_IDENTIFIER_LIST);
-	data = TLVP_VAL(&tp, GSM0808_IE_CELL_IDENTIFIER_LIST);
-
-	/* No need to try a different BSS */
-	if (data[0] == CELL_IDENT_BSS) {
-		return -3;
-	} else if (data[0] != CELL_IDENT_LAC) {
-		LOGP(DNAT, LOGL_ERROR, "Unhandled cell ident discrminator: %d\n", data[0]);
-		return -4;
-	}
-
-	*out_data = &data[1];
-	*out_leng = data_length - 1;
-	return 0;
-}
-
-int bsc_write_mgcp(struct bsc_connection *bsc, const uint8_t *data, unsigned int length)
-{
-	struct msgb *msg;
-
-	if (length > 4096 - 128) {
-		LOGP(DLINP, LOGL_ERROR, "Can not send message of that size.\n");
-		return -1;
-	}
-
-	msg = msgb_alloc_headroom(4096, 128, "to-bsc");
-	if (!msg) {
-		LOGP(DLINP, LOGL_ERROR, "Failed to allocate memory for BSC msg.\n");
-		return -1;
-	}
-
-	/* copy the data */
-	msg->l3h = msgb_put(msg, length);
-	memcpy(msg->l3h, data, length);
-
-        return bsc_write(bsc, msg, IPAC_PROTO_MGCP_OLD);
-}
-
-int bsc_write(struct bsc_connection *bsc, struct msgb *msg, int proto)
-{
-	return bsc_do_write(&bsc->write_queue, msg, proto);
-}
-
-int bsc_do_write(struct osmo_wqueue *queue, struct msgb *msg, int proto)
-{
-	/* prepend the header */
-	ipa_prepend_header(msg, proto);
-	return bsc_write_msg(queue, msg);
-}
-
-int bsc_write_msg(struct osmo_wqueue *queue, struct msgb *msg)
-{
-	if (osmo_wqueue_enqueue(queue, msg) != 0) {
-		LOGP(DLINP, LOGL_ERROR, "Failed to enqueue the write.\n");
-		msgb_free(msg);
-		return -1;
-	}
-
-	return 0;
-}
-
-struct gsm48_hdr *bsc_unpack_dtap(struct bsc_nat_parsed *parsed,
-				  struct msgb *msg, uint32_t *len)
-{
-	/* gsm_type is actually the size of the dtap */
-	*len = parsed->gsm_type;
-	if (*len < msgb_l3len(msg) - 3) {
-		LOGP(DNAT, LOGL_ERROR, "Not enough space for DTAP.\n");
-		return NULL;
-	}
-
-	if (msgb_l3len(msg) - 3 < msg->l3h[2]) {
-		LOGP(DNAT, LOGL_ERROR,
-		     "GSM48 payload does not fit: %d %d\n",
-		     msg->l3h[2], msgb_l3len(msg) - 3);
-		return NULL;
-	}
-
-	msg->l4h = &msg->l3h[3];
-	return (struct gsm48_hdr *) msg->l4h;
-}
-
-static const char *con_types [] = {
-	[FLT_CON_TYPE_NONE] = "n/a",
-	[FLT_CON_TYPE_LU] = "Location Update",
-	[FLT_CON_TYPE_CM_SERV_REQ] = "CM Serv Req",
-	[FLT_CON_TYPE_PAG_RESP] = "Paging Response",
-	[FLT_CON_TYPE_SSA] = "Supplementar Service Activation",
-	[FLT_CON_TYPE_LOCAL_REJECT] = "Local Reject",
-	[FLT_CON_TYPE_OTHER] = "Other",
-};
-
-const char *bsc_con_type_to_string(int type)
-{
-	return con_types[type];
-}
-
-int bsc_nat_msc_is_connected(struct bsc_nat *nat)
-{
-	return nat->msc_con->is_connected;
-}
-
-static const int con_to_ctr[] = {
-	[FLT_CON_TYPE_NONE]		= -1,
-	[FLT_CON_TYPE_LU]		= BCFG_CTR_CON_TYPE_LU,
-	[FLT_CON_TYPE_CM_SERV_REQ]	= BCFG_CTR_CON_CMSERV_RQ,
-	[FLT_CON_TYPE_PAG_RESP]		= BCFG_CTR_CON_PAG_RESP,
-	[FLT_CON_TYPE_SSA]		= BCFG_CTR_CON_SSA,
-	[FLT_CON_TYPE_LOCAL_REJECT]	= -1,
-	[FLT_CON_TYPE_OTHER]		= BCFG_CTR_CON_OTHER,
-};
-
-int bsc_conn_type_to_ctr(struct nat_sccp_connection *conn)
-{
-	return con_to_ctr[conn->filter_state.con_type];
-}
-
-int bsc_write_cb(struct osmo_fd *bfd, struct msgb *msg)
-{
-	int rc;
-
-	rc = write(bfd->fd, msg->data, msg->len);
-	if (rc != msg->len)
-		LOGP(DNAT, LOGL_ERROR, "Failed to write message to the BSC.\n");
-
-	return rc;
-}
-
-static void extract_lac(const uint8_t *data, uint16_t *lac, uint16_t *ci)
-{
-	memcpy(lac, &data[0], sizeof(*lac));
-	memcpy(ci, &data[2], sizeof(*ci));
-
-	*lac = ntohs(*lac);
-	*ci = ntohs(*ci);
-}
-
-int bsc_nat_extract_lac(struct bsc_connection *bsc,
-			struct nat_sccp_connection *con,
-			struct bsc_nat_parsed *parsed, struct msgb *msg)
-{
-	int data_length;
-	const uint8_t *data;
-	struct tlv_parsed tp;
-	uint16_t lac, ci;
-
-	if (parsed->gsm_type != BSS_MAP_MSG_COMPLETE_LAYER_3) {
-		LOGP(DNAT, LOGL_ERROR, "Can only extract LAC from Complete Layer3\n");
-		return -1;
-	}
-
-	if (!msg->l3h || msgb_l3len(msg) < 3) {
-		LOGP(DNAT, LOGL_ERROR, "Complete Layer3 mssage is too short.\n");
-		return -1;
-	}
-
-	tlv_parse(&tp, gsm0808_att_tlvdef(), msg->l3h + 3, msgb_l3len(msg) - 3, 0, 0);
-	if (!TLVP_PRESENT(&tp, GSM0808_IE_CELL_IDENTIFIER)) {
-		LOGP(DNAT, LOGL_ERROR, "No CellIdentifier List inside paging msg.\n");
-		return -2;
-	}
-
-	data_length = TLVP_LEN(&tp, GSM0808_IE_CELL_IDENTIFIER);
-	data = TLVP_VAL(&tp, GSM0808_IE_CELL_IDENTIFIER);
-
-	/* Attemt to get the LAC/CI from it */
-	if (data[0] == CELL_IDENT_WHOLE_GLOBAL) {
-		if (data_length != 8) {
-			LOGP(DNAT, LOGL_ERROR,
-				"Ident too short: %d\n", data_length);
-			return -3;
-		}
-		extract_lac(&data[1 + 3], &lac, &ci);
-	} else if (data[0] == CELL_IDENT_LAC_AND_CI) {
-		if (data_length != 5) {
-			LOGP(DNAT, LOGL_ERROR,
-				"Ident too short: %d\n", data_length);
-			return -3;
-		}
-		extract_lac(&data[1], &lac, &ci);
-	} else {
-		LOGP(DNAT, LOGL_ERROR,
-			"Unhandled cell identifier: %d\n", data[0]);
-		return -1;
-	}
-
-	con->lac = lac;
-	con->ci = ci;
-	return 0;
-}