diff options
Diffstat (limited to 'bfdd/config.c')
| -rw-r--r-- | bfdd/config.c | 592 |
1 files changed, 0 insertions, 592 deletions
diff --git a/bfdd/config.c b/bfdd/config.c deleted file mode 100644 index 22d7d7deee..0000000000 --- a/bfdd/config.c +++ /dev/null @@ -1,592 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/********************************************************************* - * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF") - * - * 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); - zlog_warn("%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_echorecvinterval = BFD_DEF_REQ_MIN_ECHO_RX; - bpc.bpc_echotxinterval = BFD_DEF_DES_MIN_ECHO_TX; - - switch (plt) { - case PLT_IPV4: - zlog_debug("ipv4 peers %d:", allen); - bpc.bpc_ipv4 = true; - break; - case PLT_IPV6: - zlog_debug("ipv6 peers %d:", allen); - bpc.bpc_ipv4 = false; - break; - case PLT_LABEL: - zlog_debug("label peers %d:", allen); - if (parse_peer_label_config(jo_val, &bpc) != 0) { - error++; - continue; - } - break; - - default: - error++; - zlog_err("%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; - - zlog_debug(" peer: %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); - zlog_debug(" multihop: %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) { - zlog_debug( - "%s:%d failed to parse peer-address '%s'", - __func__, __LINE__, sval); - error++; - } - zlog_debug(" peer-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) { - zlog_debug( - "%s:%d failed to parse local-address '%s'", - __func__, __LINE__, sval); - error++; - } - zlog_debug(" local-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)) { - zlog_debug( - " local-interface: %s (truncated)", - sval); - error++; - } else { - zlog_debug(" local-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)) { - zlog_debug(" vrf-name: %s (truncated)", - sval); - error++; - } else { - zlog_debug(" vrf-name: %s", sval); - } - } else if (strcmp(key, "detect-multiplier") == 0) { - bpc->bpc_detectmultiplier = - json_object_get_int64(jo_val); - bpc->bpc_has_detectmultiplier = true; - zlog_debug(" detect-multiplier: %u", - bpc->bpc_detectmultiplier); - } else if (strcmp(key, "receive-interval") == 0) { - bpc->bpc_recvinterval = json_object_get_int64(jo_val); - bpc->bpc_has_recvinterval = true; - zlog_debug(" receive-interval: %" PRIu64, - bpc->bpc_recvinterval); - } else if (strcmp(key, "transmit-interval") == 0) { - bpc->bpc_txinterval = json_object_get_int64(jo_val); - bpc->bpc_has_txinterval = true; - zlog_debug(" transmit-interval: %" PRIu64, - bpc->bpc_txinterval); - } else if (strcmp(key, "echo-receive-interval") == 0) { - bpc->bpc_echorecvinterval = json_object_get_int64(jo_val); - bpc->bpc_has_echorecvinterval = true; - zlog_debug(" echo-receive-interval: %" PRIu64, - bpc->bpc_echorecvinterval); - } else if (strcmp(key, "echo-transmit-interval") == 0) { - bpc->bpc_echotxinterval = json_object_get_int64(jo_val); - bpc->bpc_has_echotxinterval = true; - zlog_debug(" echo-transmit-interval: %" PRIu64, - bpc->bpc_echotxinterval); - } else if (strcmp(key, "create-only") == 0) { - bpc->bpc_createonly = json_object_get_boolean(jo_val); - zlog_debug(" create-only: %s", - bpc->bpc_createonly ? "true" : "false"); - } else if (strcmp(key, "shutdown") == 0) { - bpc->bpc_shutdown = json_object_get_boolean(jo_val); - zlog_debug(" shutdown: %s", - bpc->bpc_shutdown ? "true" : "false"); - } else if (strcmp(key, "echo-mode") == 0) { - bpc->bpc_echo = json_object_get_boolean(jo_val); - zlog_debug(" echo-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)) { - zlog_debug(" label: %s (truncated)", - sval); - error++; - } else { - zlog_debug(" label: %s", sval); - } - } else { - sval = json_object_get_string(jo_val); - zlog_warn("%s:%d invalid configuration: '%s: %s'", - __func__, __LINE__, key, sval); - error++; - } - } - - if (bpc->bpc_peer.sa_sin.sin_family == 0) { - zlog_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; - - zlog_debug(" peer-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-receive-interval", - bs->timers.required_min_echo_rx / 1000); - json_object_int_add(resp, "echo-transmit-interval", - bs->timers.desired_min_echo_tx / 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-receive-interval", - bs->remote_timers.required_min_echo / 1000); - - if (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 (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 (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6)) - json_object_boolean_true_add(jo, "ipv6"); - else - json_object_boolean_false_add(jo, "ipv6"); - - if (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)) - zlog_warn("%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); -} |
