[mirror_frr.git] / bfdd / config.c

/*********************************************************************
 * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
 *
 * 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; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * config.c: implements the BFD daemon configuration handling.
 *
 * Authors
 * -------
 * Rafael Zalamena <rzalamena@opensourcerouting.org>
 */

#include <zebra.h>

#include <string.h>

#include "lib/json.h"

#include "bfd.h"

DEFINE_MTYPE_STATIC(BFDD, BFDD_LABEL, "long-lived label memory")

/*
 * Definitions
 */
enum peer_list_type {
	PLT_IPV4,
	PLT_IPV6,
	PLT_LABEL,
};


/*
 * Prototypes
 */
static int parse_config_json(struct json_object *jo, bpc_handle h, void *arg);
static int parse_list(struct json_object *jo, enum peer_list_type plt,
		      bpc_handle h, void *arg);
static int parse_peer_config(struct json_object *jo, struct bfd_peer_cfg *bpc);
static int parse_peer_label_config(struct json_object *jo,
				   struct bfd_peer_cfg *bpc);

static int config_add(struct bfd_peer_cfg *bpc, void *arg);
static int config_del(struct bfd_peer_cfg *bpc, void *arg);

static int json_object_add_peer(struct json_object *jo, struct bfd_session *bs);


/*
 * Implementation
 */
static int config_add(struct bfd_peer_cfg *bpc,
		      void *arg __attribute__((unused)))
{
	return ptm_bfd_sess_new(bpc) == NULL;
}

static int config_del(struct bfd_peer_cfg *bpc,
		      void *arg __attribute__((unused)))
{
	return ptm_bfd_sess_del(bpc) != 0;
}

static int parse_config_json(struct json_object *jo, bpc_handle h, void *arg)
{
	const char *key, *sval;
	struct json_object *jo_val;
	struct json_object_iterator joi, join;
	int error = 0;

	JSON_FOREACH (jo, joi, join) {
		key = json_object_iter_peek_name(&joi);
		jo_val = json_object_iter_peek_value(&joi);

		if (strcmp(key, "ipv4") == 0) {
			error += parse_list(jo_val, PLT_IPV4, h, arg);
		} else if (strcmp(key, "ipv6") == 0) {
			error += parse_list(jo_val, PLT_IPV6, h, arg);
		} else if (strcmp(key, "label") == 0) {
			error += parse_list(jo_val, PLT_LABEL, h, arg);
		} else {
			sval = json_object_get_string(jo_val);
			log_warning("%s:%d invalid configuration: %s", __func__,
				    __LINE__, sval);
			error++;
		}
	}

	/*
	 * Our callers never call free() on json_object and only expect
	 * the return value, so lets free() it here.
	 */
	json_object_put(jo);

	return error;
}

int parse_config(const char *fname)
{
	struct json_object *jo;

	jo = json_object_from_file(fname);
	if (jo == NULL)
		return -1;

	return parse_config_json(jo, config_add, NULL);
}

static int parse_list(struct json_object *jo, enum peer_list_type plt,
		      bpc_handle h, void *arg)
{
	struct json_object *jo_val;
	struct bfd_peer_cfg bpc;
	int allen, idx;
	int error = 0, result;

	allen = json_object_array_length(jo);
	for (idx = 0; idx < allen; idx++) {
		jo_val = json_object_array_get_idx(jo, idx);

		/* Set defaults. */
		memset(&bpc, 0, sizeof(bpc));
		bpc.bpc_detectmultiplier = BFD_DEFDETECTMULT;
		bpc.bpc_recvinterval = BFD_DEFREQUIREDMINRX;
		bpc.bpc_txinterval = BFD_DEFDESIREDMINTX;
		bpc.bpc_echointerval = BFD_DEF_REQ_MIN_ECHO;

		switch (plt) {
		case PLT_IPV4:
			log_debug("ipv4 peers %d:", allen);
			bpc.bpc_ipv4 = true;
			break;
		case PLT_IPV6:
			log_debug("ipv6 peers %d:", allen);
			bpc.bpc_ipv4 = false;
			break;
		case PLT_LABEL:
			log_debug("label peers %d:", allen);
			if (parse_peer_label_config(jo_val, &bpc) != 0) {
				error++;
				continue;
			}
			break;

		default:
			error++;
			log_error("%s:%d: unsupported peer type", __func__,
				  __LINE__);
			break;
		}

		result = parse_peer_config(jo_val, &bpc);
		error += result;
		if (result == 0)
			error += (h(&bpc, arg) != 0);
	}

	return error;
}

static int parse_peer_config(struct json_object *jo, struct bfd_peer_cfg *bpc)
{
	const char *key, *sval;
	struct json_object *jo_val;
	struct json_object_iterator joi, join;
	int family_type = (bpc->bpc_ipv4) ? AF_INET : AF_INET6;
	int error = 0;

	log_debug("\tpeer: %s", bpc->bpc_ipv4 ? "ipv4" : "ipv6");

	JSON_FOREACH (jo, joi, join) {
		key = json_object_iter_peek_name(&joi);
		jo_val = json_object_iter_peek_value(&joi);

		if (strcmp(key, "multihop") == 0) {
			bpc->bpc_mhop = json_object_get_boolean(jo_val);
			log_debug("\tmultihop: %s",
				  bpc->bpc_mhop ? "true" : "false");
		} else if (strcmp(key, "peer-address") == 0) {
			sval = json_object_get_string(jo_val);
			if (strtosa(sval, &bpc->bpc_peer) != 0
			    || bpc->bpc_peer.sa_sin.sin_family != family_type) {
				log_info(
					"%s:%d failed to parse peer-address '%s'",
					__func__, __LINE__, sval);
				error++;
			}
			log_debug("\tpeer-address: %s", sval);
		} else if (strcmp(key, "local-address") == 0) {
			sval = json_object_get_string(jo_val);
			if (strtosa(sval, &bpc->bpc_local) != 0
			    || bpc->bpc_local.sa_sin.sin_family
				       != family_type) {
				log_info(
					"%s:%d failed to parse local-address '%s'",
					__func__, __LINE__, sval);
				error++;
			}
			log_debug("\tlocal-address: %s", sval);
		} else if (strcmp(key, "local-interface") == 0) {
			bpc->bpc_has_localif = true;
			sval = json_object_get_string(jo_val);
			if (strlcpy(bpc->bpc_localif, sval,
				    sizeof(bpc->bpc_localif))
			    > sizeof(bpc->bpc_localif)) {
				log_debug("\tlocal-interface: %s (truncated)");
				error++;
			} else {
				log_debug("\tlocal-interface: %s", sval);
			}
		} else if (strcmp(key, "vrf-name") == 0) {
			bpc->bpc_has_vrfname = true;
			sval = json_object_get_string(jo_val);
			if (strlcpy(bpc->bpc_vrfname, sval,
				    sizeof(bpc->bpc_vrfname))
			    > sizeof(bpc->bpc_vrfname)) {
				log_debug("\tvrf-name: %s (truncated)", sval);
				error++;
			} else {
				log_debug("\tvrf-name: %s", sval);
			}
		} else if (strcmp(key, "detect-multiplier") == 0) {
			bpc->bpc_detectmultiplier =
				json_object_get_int64(jo_val);
			bpc->bpc_has_detectmultiplier = true;
			log_debug("\tdetect-multiplier: %llu",
				  bpc->bpc_detectmultiplier);
		} else if (strcmp(key, "receive-interval") == 0) {
			bpc->bpc_recvinterval = json_object_get_int64(jo_val);
			bpc->bpc_has_recvinterval = true;
			log_debug("\treceive-interval: %llu",
				  bpc->bpc_recvinterval);
		} else if (strcmp(key, "transmit-interval") == 0) {
			bpc->bpc_txinterval = json_object_get_int64(jo_val);
			bpc->bpc_has_txinterval = true;
			log_debug("\ttransmit-interval: %llu",
				  bpc->bpc_txinterval);
		} else if (strcmp(key, "echo-interval") == 0) {
			bpc->bpc_echointerval = json_object_get_int64(jo_val);
			bpc->bpc_has_echointerval = true;
			log_debug("\techo-interval: %llu",
				  bpc->bpc_echointerval);
		} else if (strcmp(key, "create-only") == 0) {
			bpc->bpc_createonly = json_object_get_boolean(jo_val);
			log_debug("\tcreate-only: %s",
				  bpc->bpc_createonly ? "true" : "false");
		} else if (strcmp(key, "shutdown") == 0) {
			bpc->bpc_shutdown = json_object_get_boolean(jo_val);
			log_debug("\tshutdown: %s",
				  bpc->bpc_shutdown ? "true" : "false");
		} else if (strcmp(key, "echo-mode") == 0) {
			bpc->bpc_echo = json_object_get_boolean(jo_val);
			log_debug("\techo-mode: %s",
				  bpc->bpc_echo ? "true" : "false");
		} else if (strcmp(key, "label") == 0) {
			bpc->bpc_has_label = true;
			sval = json_object_get_string(jo_val);
			if (strlcpy(bpc->bpc_label, sval,
				    sizeof(bpc->bpc_label))
			    > sizeof(bpc->bpc_label)) {
				log_debug("\tlabel: %s (truncated)", sval);
				error++;
			} else {
				log_debug("\tlabel: %s", sval);
			}
		} else {
			sval = json_object_get_string(jo_val);
			log_warning("%s:%d invalid configuration: '%s: %s'",
				    __func__, __LINE__, key, sval);
			error++;
		}
	}

	if (bpc->bpc_peer.sa_sin.sin_family == 0) {
		log_debug("%s:%d no peer address provided", __func__, __LINE__);
		error++;
	}

	return error;
}

static int parse_peer_label_config(struct json_object *jo,
				   struct bfd_peer_cfg *bpc)
{
	struct peer_label *pl;
	struct json_object *label;
	const char *sval;

	/* Get label and translate it to BFD daemon key. */
	if (!json_object_object_get_ex(jo, "label", &label))
		return 1;

	sval = json_object_get_string(label);

	pl = pl_find(sval);
	if (pl == NULL)
		return 1;

	log_debug("\tpeer-label: %s", sval);

	/* Translate the label into BFD address keys. */
	bs_to_bpc(pl->pl_bs, bpc);

	return 0;
}


/*
 * Control socket JSON parsing.
 */
int config_request_add(const char *jsonstr)
{
	struct json_object *jo;

	jo = json_tokener_parse(jsonstr);
	if (jo == NULL)
		return -1;

	return parse_config_json(jo, config_add, NULL);
}

int config_request_del(const char *jsonstr)
{
	struct json_object *jo;

	jo = json_tokener_parse(jsonstr);
	if (jo == NULL)
		return -1;

	return parse_config_json(jo, config_del, NULL);
}

char *config_response(const char *status, const char *error)
{
	struct json_object *resp, *jo;
	char *jsonstr;

	resp = json_object_new_object();
	if (resp == NULL)
		return NULL;

	/* Add 'status' response key. */
	jo = json_object_new_string(status);
	if (jo == NULL) {
		json_object_put(resp);
		return NULL;
	}

	json_object_object_add(resp, "status", jo);

	/* Add 'error' response key. */
	if (error != NULL) {
		jo = json_object_new_string(error);
		if (jo == NULL) {
			json_object_put(resp);
			return NULL;
		}

		json_object_object_add(resp, "error", jo);
	}

	/* Generate JSON response. */
	jsonstr = XSTRDUP(
		MTYPE_BFDD_NOTIFICATION,
		json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
	json_object_put(resp);

	return jsonstr;
}

char *config_notify(struct bfd_session *bs)
{
	struct json_object *resp;
	char *jsonstr;
	time_t now;

	resp = json_object_new_object();
	if (resp == NULL)
		return NULL;

	json_object_string_add(resp, "op", BCM_NOTIFY_PEER_STATUS);

	json_object_add_peer(resp, bs);

	/* Add status information */
	json_object_int_add(resp, "id", bs->discrs.my_discr);
	json_object_int_add(resp, "remote-id", bs->discrs.my_discr);

	switch (bs->ses_state) {
	case PTM_BFD_UP:
		json_object_string_add(resp, "state", "up");

		now = monotime(NULL);
		json_object_int_add(resp, "uptime", now - bs->uptime.tv_sec);
		break;
	case PTM_BFD_ADM_DOWN:
		json_object_string_add(resp, "state", "adm-down");
		break;
	case PTM_BFD_DOWN:
		json_object_string_add(resp, "state", "down");

		now = monotime(NULL);
		json_object_int_add(resp, "downtime",
				    now - bs->downtime.tv_sec);
		break;
	case PTM_BFD_INIT:
		json_object_string_add(resp, "state", "init");
		break;

	default:
		json_object_string_add(resp, "state", "unknown");
		break;
	}

	json_object_int_add(resp, "diagnostics", bs->local_diag);
	json_object_int_add(resp, "remote-diagnostics", bs->remote_diag);

	/* Generate JSON response. */
	jsonstr = XSTRDUP(
		MTYPE_BFDD_NOTIFICATION,
		json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
	json_object_put(resp);

	return jsonstr;
}

char *config_notify_config(const char *op, struct bfd_session *bs)
{
	struct json_object *resp;
	char *jsonstr;

	resp = json_object_new_object();
	if (resp == NULL)
		return NULL;

	json_object_string_add(resp, "op", op);

	json_object_add_peer(resp, bs);

	/* On peer deletion we don't need to add any additional information. */
	if (strcmp(op, BCM_NOTIFY_CONFIG_DELETE) == 0)
		goto skip_config;

	json_object_int_add(resp, "detect-multiplier", bs->detect_mult);
	json_object_int_add(resp, "receive-interval",
			    bs->timers.required_min_rx / 1000);
	json_object_int_add(resp, "transmit-interval",
			    bs->timers.desired_min_tx / 1000);
	json_object_int_add(resp, "echo-interval",
			    bs->timers.required_min_echo / 1000);

	json_object_int_add(resp, "remote-detect-multiplier",
			    bs->remote_detect_mult);
	json_object_int_add(resp, "remote-receive-interval",
			    bs->remote_timers.required_min_rx / 1000);
	json_object_int_add(resp, "remote-transmit-interval",
			    bs->remote_timers.desired_min_tx / 1000);
	json_object_int_add(resp, "remote-echo-interval",
			    bs->remote_timers.required_min_echo / 1000);

	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_ECHO))
		json_object_boolean_true_add(resp, "echo-mode");
	else
		json_object_boolean_false_add(resp, "echo-mode");

	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN))
		json_object_boolean_true_add(resp, "shutdown");
	else
		json_object_boolean_false_add(resp, "shutdown");

skip_config:
	/* Generate JSON response. */
	jsonstr = XSTRDUP(
		MTYPE_BFDD_NOTIFICATION,
		json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
	json_object_put(resp);

	return jsonstr;
}

int config_notify_request(struct bfd_control_socket *bcs, const char *jsonstr,
			  bpc_handle bh)
{
	struct json_object *jo;

	jo = json_tokener_parse(jsonstr);
	if (jo == NULL)
		return -1;

	return parse_config_json(jo, bh, bcs);
}

static int json_object_add_peer(struct json_object *jo, struct bfd_session *bs)
{
	char addr_buf[INET6_ADDRSTRLEN];

	/* Add peer 'key' information. */
	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6))
		json_object_boolean_true_add(jo, "ipv6");
	else
		json_object_boolean_false_add(jo, "ipv6");

	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
		json_object_boolean_true_add(jo, "multihop");
		json_object_string_add(jo, "peer-address",
				       inet_ntop(bs->key.family, &bs->key.peer,
						 addr_buf, sizeof(addr_buf)));
		json_object_string_add(jo, "local-address",
				       inet_ntop(bs->key.family, &bs->key.local,
						 addr_buf, sizeof(addr_buf)));
		if (bs->key.vrfname[0])
			json_object_string_add(jo, "vrf-name", bs->key.vrfname);
	} else {
		json_object_boolean_false_add(jo, "multihop");
		json_object_string_add(jo, "peer-address",
				       inet_ntop(bs->key.family, &bs->key.peer,
						 addr_buf, sizeof(addr_buf)));
		if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local)))
			json_object_string_add(
				jo, "local-address",
				inet_ntop(bs->key.family, &bs->key.local,
					  addr_buf, sizeof(addr_buf)));
		if (bs->key.ifname[0])
			json_object_string_add(jo, "local-interface",
					       bs->key.ifname);
	}

	if (bs->pl)
		json_object_string_add(jo, "label", bs->pl->pl_label);

	return 0;
}


/*
 * Label handling
 */
struct peer_label *pl_find(const char *label)
{
	struct peer_label *pl;

	TAILQ_FOREACH (pl, &bglobal.bg_pllist, pl_entry) {
		if (strcmp(pl->pl_label, label) != 0)
			continue;

		return pl;
	}

	return NULL;
}

struct peer_label *pl_new(const char *label, struct bfd_session *bs)
{
	struct peer_label *pl;

	pl = XCALLOC(MTYPE_BFDD_LABEL, sizeof(*pl));

	if (strlcpy(pl->pl_label, label, sizeof(pl->pl_label))
	    > sizeof(pl->pl_label))
		log_warning("%s:%d: label was truncated", __func__, __LINE__);

	pl->pl_bs = bs;
	bs->pl = pl;

	TAILQ_INSERT_HEAD(&bglobal.bg_pllist, pl, pl_entry);

	return pl;
}

void pl_free(struct peer_label *pl)
{
	if (pl == NULL)
		return;

	/* Remove the pointer back. */
	pl->pl_bs->pl = NULL;

	TAILQ_REMOVE(&bglobal.bg_pllist, pl, pl_entry);
	XFREE(MTYPE_BFDD_LABEL, pl);
}
Commit	Line	Data
e9e2c950 RZ	1	/*********************************************************************
	2	* Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License as published by the Free
	6	* Software Foundation; either version 2 of the License, or (at your option)
	7	* any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along
	15	* with this program; see the file COPYING; if not, write to the Free Software
	16	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	17	*
	18	* config.c: implements the BFD daemon configuration handling.
	19	*
	20	* Authors
	21	* -------
	22	* Rafael Zalamena <rzalamena@opensourcerouting.org>
	23	*/
	24
	25	#include <zebra.h>
	26
	27	#include <string.h>
	28
	29	#include "lib/json.h"
	30
	31	#include "bfd.h"
	32
1b88c3cb DL	33	DEFINE_MTYPE_STATIC(BFDD, BFDD_LABEL, "long-lived label memory")
1b88c3cb DL	34
e9e2c950 RZ	35	/*
	36	* Definitions
	37	*/
	38	enum peer_list_type {
	39	PLT_IPV4,
	40	PLT_IPV6,
	41	PLT_LABEL,
	42	};
	43
	44
	45	/*
	46	* Prototypes
	47	*/
	48	static int parse_config_json(struct json_object jo, bpc_handle h, void arg);
	49	static int parse_list(struct json_object *jo, enum peer_list_type plt,
	50	bpc_handle h, void *arg);
	51	static int parse_peer_config(struct json_object jo, struct bfd_peer_cfg bpc);
	52	static int parse_peer_label_config(struct json_object *jo,
	53	struct bfd_peer_cfg *bpc);
	54
	55	static int config_add(struct bfd_peer_cfg bpc, void arg);
	56	static int config_del(struct bfd_peer_cfg bpc, void arg);
	57
	58	static int json_object_add_peer(struct json_object jo, struct bfd_session bs);
	59
	60
	61	/*
	62	* Implementation
	63	*/
	64	static int config_add(struct bfd_peer_cfg *bpc,
	65	void *arg __attribute__((unused)))
	66	{
	67	return ptm_bfd_sess_new(bpc) == NULL;
	68	}
	69
	70	static int config_del(struct bfd_peer_cfg *bpc,
	71	void *arg __attribute__((unused)))
	72	{
bc50bcc8	73	return ptm_bfd_sess_del(bpc) != 0;
e9e2c950 RZ	74	}
	75
	76	static int parse_config_json(struct json_object jo, bpc_handle h, void arg)
	77	{
	78	const char key, sval;
	79	struct json_object *jo_val;
	80	struct json_object_iterator joi, join;
	81	int error = 0;
	82
	83	JSON_FOREACH (jo, joi, join) {
	84	key = json_object_iter_peek_name(&joi);
	85	jo_val = json_object_iter_peek_value(&joi);
	86
	87	if (strcmp(key, "ipv4") == 0) {
	88	error += parse_list(jo_val, PLT_IPV4, h, arg);
	89	} else if (strcmp(key, "ipv6") == 0) {
	90	error += parse_list(jo_val, PLT_IPV6, h, arg);
	91	} else if (strcmp(key, "label") == 0) {
	92	error += parse_list(jo_val, PLT_LABEL, h, arg);
	93	} else {
	94	sval = json_object_get_string(jo_val);
	95	log_warning("%s:%d invalid configuration: %s", __func__,
	96	__LINE__, sval);
	97	error++;
	98	}
	99	}
	100
	101	/*
	102	* Our callers never call free() on json_object and only expect
	103	* the return value, so lets free() it here.
	104	*/
	105	json_object_put(jo);
	106
	107	return error;
	108	}
	109
	110	int parse_config(const char *fname)
	111	{
	112	struct json_object *jo;
	113
	114	jo = json_object_from_file(fname);
	115	if (jo == NULL)
	116	return -1;
	117
	118	return parse_config_json(jo, config_add, NULL);
	119	}
	120
	121	static int parse_list(struct json_object *jo, enum peer_list_type plt,
	122	bpc_handle h, void *arg)
	123	{
	124	struct json_object *jo_val;
	125	struct bfd_peer_cfg bpc;
	126	int allen, idx;
	127	int error = 0, result;
	128
	129	allen = json_object_array_length(jo);
	130	for (idx = 0; idx < allen; idx++) {
	131	jo_val = json_object_array_get_idx(jo, idx);
	132
	133	/* Set defaults. */
	134	memset(&bpc, 0, sizeof(bpc));
	135	bpc.bpc_detectmultiplier = BFD_DEFDETECTMULT;
	136	bpc.bpc_recvinterval = BFD_DEFREQUIREDMINRX;
	137	bpc.bpc_txinterval = BFD_DEFDESIREDMINTX;
138	bpc.bpc_echointerval = BFD_DEF_REQ_MIN_ECHO;
139
140	switch (plt) {
141	case PLT_IPV4:
142	log_debug("ipv4 peers %d:", allen);
143	bpc.bpc_ipv4 = true;
144	break;
145	case PLT_IPV6:
146	log_debug("ipv6 peers %d:", allen);
147	bpc.bpc_ipv4 = false;
148	break;
149	case PLT_LABEL:
150	log_debug("label peers %d:", allen);
151	if (parse_peer_label_config(jo_val, &bpc) != 0) {
152	error++;
153	continue;
154	}
155	break;
156
157	default:
158	error++;
159	log_error("%s:%d: unsupported peer type", __func__,
160	__LINE__);
161	break;
162	}
163
164	result = parse_peer_config(jo_val, &bpc);
165	error += result;
166	if (result == 0)
167	error += (h(&bpc, arg) != 0);
168	}
169
170	return error;
171	}
172
173	static int parse_peer_config(struct json_object jo, struct bfd_peer_cfg bpc)
174	{
175	const char key, sval;
176	struct json_object *jo_val;
177	struct json_object_iterator joi, join;
178	int family_type = (bpc->bpc_ipv4) ? AF_INET : AF_INET6;
179	int error = 0;
180
181	log_debug("\tpeer: %s", bpc->bpc_ipv4 ? "ipv4" : "ipv6");
182
183	JSON_FOREACH (jo, joi, join) {
184	key = json_object_iter_peek_name(&joi);
185	jo_val = json_object_iter_peek_value(&joi);
186
187	if (strcmp(key, "multihop") == 0) {
188	bpc->bpc_mhop = json_object_get_boolean(jo_val);
189	log_debug("\tmultihop: %s",
190	bpc->bpc_mhop ? "true" : "false");
191	} else if (strcmp(key, "peer-address") == 0) {
192	sval = json_object_get_string(jo_val);
193	if (strtosa(sval, &bpc->bpc_peer) != 0
194	\|\| bpc->bpc_peer.sa_sin.sin_family != family_type) {
195	log_info(
196	"%s:%d failed to parse peer-address '%s'",
197	__func__, __LINE__, sval);
198	error++;
199	}
200	log_debug("\tpeer-address: %s", sval);
201	} else if (strcmp(key, "local-address") == 0) {
202	sval = json_object_get_string(jo_val);
203	if (strtosa(sval, &bpc->bpc_local) != 0
204	\|\| bpc->bpc_local.sa_sin.sin_family
205	!= family_type) {
206	log_info(
207	"%s:%d failed to parse local-address '%s'",
208	__func__, __LINE__, sval);
209	error++;
210	}
211	log_debug("\tlocal-address: %s", sval);
212	} else if (strcmp(key, "local-interface") == 0) {
213	bpc->bpc_has_localif = true;
214	sval = json_object_get_string(jo_val);
215	if (strlcpy(bpc->bpc_localif, sval,
216	sizeof(bpc->bpc_localif))
217	> sizeof(bpc->bpc_localif)) {
218	log_debug("\tlocal-interface: %s (truncated)");
219	error++;
220	} else {
221	log_debug("\tlocal-interface: %s", sval);
222	}
e9e2c950 RZ	223	} else if (strcmp(key, "vrf-name") == 0) {
	224	bpc->bpc_has_vrfname = true;
	225	sval = json_object_get_string(jo_val);
	226	if (strlcpy(bpc->bpc_vrfname, sval,
	227	sizeof(bpc->bpc_vrfname))
	228	> sizeof(bpc->bpc_vrfname)) {
	229	log_debug("\tvrf-name: %s (truncated)", sval);
	230	error++;
	231	} else {
	232	log_debug("\tvrf-name: %s", sval);
	233	}
	234	} else if (strcmp(key, "detect-multiplier") == 0) {
	235	bpc->bpc_detectmultiplier =
	236	json_object_get_int64(jo_val);
	237	bpc->bpc_has_detectmultiplier = true;
	238	log_debug("\tdetect-multiplier: %llu",
	239	bpc->bpc_detectmultiplier);
	240	} else if (strcmp(key, "receive-interval") == 0) {
	241	bpc->bpc_recvinterval = json_object_get_int64(jo_val);
	242	bpc->bpc_has_recvinterval = true;
	243	log_debug("\treceive-interval: %llu",
	244	bpc->bpc_recvinterval);
	245	} else if (strcmp(key, "transmit-interval") == 0) {
	246	bpc->bpc_txinterval = json_object_get_int64(jo_val);
	247	bpc->bpc_has_txinterval = true;
	248	log_debug("\ttransmit-interval: %llu",
	249	bpc->bpc_txinterval);
	250	} else if (strcmp(key, "echo-interval") == 0) {
	251	bpc->bpc_echointerval = json_object_get_int64(jo_val);
	252	bpc->bpc_has_echointerval = true;
	253	log_debug("\techo-interval: %llu",
	254	bpc->bpc_echointerval);
	255	} else if (strcmp(key, "create-only") == 0) {
	256	bpc->bpc_createonly = json_object_get_boolean(jo_val);
	257	log_debug("\tcreate-only: %s",
	258	bpc->bpc_createonly ? "true" : "false");
	259	} else if (strcmp(key, "shutdown") == 0) {
	260	bpc->bpc_shutdown = json_object_get_boolean(jo_val);
	261	log_debug("\tshutdown: %s",
	262	bpc->bpc_shutdown ? "true" : "false");
	263	} else if (strcmp(key, "echo-mode") == 0) {
	264	bpc->bpc_echo = json_object_get_boolean(jo_val);
	265	log_debug("\techo-mode: %s",
	266	bpc->bpc_echo ? "true" : "false");
	267	} else if (strcmp(key, "label") == 0) {
	268	bpc->bpc_has_label = true;
	269	sval = json_object_get_string(jo_val);
	270	if (strlcpy(bpc->bpc_label, sval,
	271	sizeof(bpc->bpc_label))
	272	> sizeof(bpc->bpc_label)) {
	273	log_debug("\tlabel: %s (truncated)", sval);
	274	error++;
	275	} else {
	276	log_debug("\tlabel: %s", sval);
	277	}
	278	} else {
	279	sval = json_object_get_string(jo_val);
	280	log_warning("%s:%d invalid configuration: '%s: %s'",
	281	__func__, __LINE__, key, sval);
	282	error++;
	283	}
	284	}
	285
	286	if (bpc->bpc_peer.sa_sin.sin_family == 0) {
287	log_debug("%s:%d no peer address provided", __func__, __LINE__);
288	error++;
289	}
290
291	return error;
292	}
293
294	static int parse_peer_label_config(struct json_object *jo,
295	struct bfd_peer_cfg *bpc)
296	{
297	struct peer_label *pl;
298	struct json_object *label;
299	const char *sval;
300
301	/* Get label and translate it to BFD daemon key. */
302	if (!json_object_object_get_ex(jo, "label", &label))
303	return 1;
304
305	sval = json_object_get_string(label);
306
307	pl = pl_find(sval);
308	if (pl == NULL)
309	return 1;
310
311	log_debug("\tpeer-label: %s", sval);
312
313	/* Translate the label into BFD address keys. */
79b4a6fc	314	bs_to_bpc(pl->pl_bs, bpc);
e9e2c950 RZ	315
	316	return 0;
	317	}
	318
	319
	320	/*
	321	* Control socket JSON parsing.
	322	*/
	323	int config_request_add(const char *jsonstr)
	324	{
	325	struct json_object *jo;
	326
	327	jo = json_tokener_parse(jsonstr);
	328	if (jo == NULL)
	329	return -1;
	330
	331	return parse_config_json(jo, config_add, NULL);
	332	}
	333
	334	int config_request_del(const char *jsonstr)
	335	{
	336	struct json_object *jo;
	337
	338	jo = json_tokener_parse(jsonstr);
	339	if (jo == NULL)
	340	return -1;
	341
	342	return parse_config_json(jo, config_del, NULL);
	343	}
	344
	345	char config_response(const char status, const char *error)
	346	{
	347	struct json_object resp, jo;
	348	char *jsonstr;
	349
	350	resp = json_object_new_object();
	351	if (resp == NULL)
	352	return NULL;
	353
	354	/* Add 'status' response key. */
	355	jo = json_object_new_string(status);
	356	if (jo == NULL) {
	357	json_object_put(resp);
	358	return NULL;
	359	}
	360
	361	json_object_object_add(resp, "status", jo);
	362
	363	/* Add 'error' response key. */
	364	if (error != NULL) {
	365	jo = json_object_new_string(error);
	366	if (jo == NULL) {
	367	json_object_put(resp);
	368	return NULL;
	369	}
	370
	371	json_object_object_add(resp, "error", jo);
	372	}
	373
	374	/* Generate JSON response. */
	375	jsonstr = XSTRDUP(
	376	MTYPE_BFDD_NOTIFICATION,
	377	json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
	378	json_object_put(resp);
379
380	return jsonstr;
381	}
382
383	char config_notify(struct bfd_session bs)
384	{
385	struct json_object *resp;
386	char *jsonstr;
387	time_t now;
388
389	resp = json_object_new_object();
390	if (resp == NULL)
391	return NULL;
392
393	json_object_string_add(resp, "op", BCM_NOTIFY_PEER_STATUS);
394
395	json_object_add_peer(resp, bs);
396
397	/* Add status information */
398	json_object_int_add(resp, "id", bs->discrs.my_discr);
399	json_object_int_add(resp, "remote-id", bs->discrs.my_discr);
400
401	switch (bs->ses_state) {
402	case PTM_BFD_UP:
403	json_object_string_add(resp, "state", "up");
404
405	now = monotime(NULL);
406	json_object_int_add(resp, "uptime", now - bs->uptime.tv_sec);
407	break;
408	case PTM_BFD_ADM_DOWN:
409	json_object_string_add(resp, "state", "adm-down");
410	break;
411	case PTM_BFD_DOWN:
412	json_object_string_add(resp, "state", "down");
413
414	now = monotime(NULL);
415	json_object_int_add(resp, "downtime",
416	now - bs->downtime.tv_sec);
417	break;
418	case PTM_BFD_INIT:
419	json_object_string_add(resp, "state", "init");
420	break;
421
422	default:
423	json_object_string_add(resp, "state", "unknown");
424	break;
425	}
426
427	json_object_int_add(resp, "diagnostics", bs->local_diag);
428	json_object_int_add(resp, "remote-diagnostics", bs->remote_diag);
429
430	/* Generate JSON response. */
431	jsonstr = XSTRDUP(
432	MTYPE_BFDD_NOTIFICATION,
433	json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
434	json_object_put(resp);
435
436	return jsonstr;
437	}
438
439	char config_notify_config(const char op, struct bfd_session *bs)
440	{
441	struct json_object *resp;
442	char *jsonstr;
443
444	resp = json_object_new_object();
445	if (resp == NULL)
446	return NULL;
447
448	json_object_string_add(resp, "op", op);
449
450	json_object_add_peer(resp, bs);
451
452	/* On peer deletion we don't need to add any additional information. */
453	if (strcmp(op, BCM_NOTIFY_CONFIG_DELETE) == 0)
454	goto skip_config;
455
456	json_object_int_add(resp, "detect-multiplier", bs->detect_mult);
457	json_object_int_add(resp, "receive-interval",
458	bs->timers.required_min_rx / 1000);
f43b9368 RZ	459	json_object_int_add(resp, "transmit-interval",
f43b9368 RZ	460	bs->timers.desired_min_tx / 1000);
e9e2c950 RZ	461	json_object_int_add(resp, "echo-interval",
	462	bs->timers.required_min_echo / 1000);
	463
	464	json_object_int_add(resp, "remote-detect-multiplier",
	465	bs->remote_detect_mult);
	466	json_object_int_add(resp, "remote-receive-interval",
	467	bs->remote_timers.required_min_rx / 1000);
	468	json_object_int_add(resp, "remote-transmit-interval",
	469	bs->remote_timers.desired_min_tx / 1000);
	470	json_object_int_add(resp, "remote-echo-interval",
	471	bs->remote_timers.required_min_echo / 1000);
	472
	473	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_ECHO))
	474	json_object_boolean_true_add(resp, "echo-mode");
	475	else
	476	json_object_boolean_false_add(resp, "echo-mode");
	477
	478	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN))
	479	json_object_boolean_true_add(resp, "shutdown");
	480	else
	481	json_object_boolean_false_add(resp, "shutdown");
	482
	483	skip_config:
	484	/* Generate JSON response. */
	485	jsonstr = XSTRDUP(
	486	MTYPE_BFDD_NOTIFICATION,
	487	json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
	488	json_object_put(resp);
	489
	490	return jsonstr;
	491	}
	492
	493	int config_notify_request(struct bfd_control_socket bcs, const char jsonstr,
	494	bpc_handle bh)
	495	{
	496	struct json_object *jo;
	497
	498	jo = json_tokener_parse(jsonstr);
	499	if (jo == NULL)
	500	return -1;
	501
	502	return parse_config_json(jo, bh, bcs);
	503	}
	504
	505	static int json_object_add_peer(struct json_object jo, struct bfd_session bs)
	506	{
79b4a6fc RZ	507	char addr_buf[INET6_ADDRSTRLEN];
79b4a6fc RZ	508
e9e2c950 RZ	509	/* Add peer 'key' information. */
	510	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6))
	511	json_object_boolean_true_add(jo, "ipv6");
	512	else
	513	json_object_boolean_false_add(jo, "ipv6");
	514
	515	if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
	516	json_object_boolean_true_add(jo, "multihop");
	517	json_object_string_add(jo, "peer-address",
79b4a6fc RZ	518	inet_ntop(bs->key.family, &bs->key.peer,
79b4a6fc RZ	519	addr_buf, sizeof(addr_buf)));
e9e2c950	520	json_object_string_add(jo, "local-address",
79b4a6fc RZ	521	inet_ntop(bs->key.family, &bs->key.local,
	522	addr_buf, sizeof(addr_buf)));
	523	if (bs->key.vrfname[0])
	524	json_object_string_add(jo, "vrf-name", bs->key.vrfname);
e9e2c950 RZ	525	} else {
	526	json_object_boolean_false_add(jo, "multihop");
	527	json_object_string_add(jo, "peer-address",
79b4a6fc RZ	528	inet_ntop(bs->key.family, &bs->key.peer,
	529	addr_buf, sizeof(addr_buf)));
	530	if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local)))
	531	json_object_string_add(
	532	jo, "local-address",
	533	inet_ntop(bs->key.family, &bs->key.local,
	534	addr_buf, sizeof(addr_buf)));
	535	if (bs->key.ifname[0])
e9e2c950	536	json_object_string_add(jo, "local-interface",
79b4a6fc	537	bs->key.ifname);
e9e2c950 RZ	538	}
	539
	540	if (bs->pl)
	541	json_object_string_add(jo, "label", bs->pl->pl_label);
	542
	543	return 0;
	544	}
	545
	546
	547	/*
	548	* Label handling
	549	*/
	550	struct peer_label pl_find(const char label)
	551	{
	552	struct peer_label *pl;
	553
	554	TAILQ_FOREACH (pl, &bglobal.bg_pllist, pl_entry) {
	555	if (strcmp(pl->pl_label, label) != 0)
	556	continue;
	557
	558	return pl;
	559	}
	560
	561	return NULL;
	562	}
	563
	564	struct peer_label pl_new(const char label, struct bfd_session *bs)
	565	{
	566	struct peer_label *pl;
	567
	568	pl = XCALLOC(MTYPE_BFDD_LABEL, sizeof(*pl));
e9e2c950 RZ	569
	570	if (strlcpy(pl->pl_label, label, sizeof(pl->pl_label))
	571	> sizeof(pl->pl_label))
	572	log_warning("%s:%d: label was truncated", __func__, __LINE__);
	573
	574	pl->pl_bs = bs;
	575	bs->pl = pl;
	576
	577	TAILQ_INSERT_HEAD(&bglobal.bg_pllist, pl, pl_entry);
	578
	579	return pl;
	580	}
	581
	582	void pl_free(struct peer_label *pl)
	583	{
	584	if (pl == NULL)
	585	return;
	586
	587	/* Remove the pointer back. */
	588	pl->pl_bs->pl = NULL;
	589
	590	TAILQ_REMOVE(&bglobal.bg_pllist, pl, pl_entry);
	591	XFREE(MTYPE_BFDD_LABEL, pl);
	592	}