| From 64d19ae11c2a3014fa58a0c05620b6ee95352125 Mon Sep 17 00:00:00 2001 |
| From: Tomas Pecka <peckato1@users.noreply.github.com> |
| Date: Thu, 7 Oct 2021 11:16:57 +0200 |
| Subject: [PATCH 1/9] network: Serialize LLDP neighbor to JSON format |
| |
| Add functions serializing LLDP neighbors to JSON (JsonVariant). |
| |
| The entry contains a chassis id, system name and port id of the remote |
| neighbor. Also it possibly contains an integer coding the enabled system |
| capabilities and port description. |
| --- |
| src/libsystemd-network/lldp-neighbor.c | 22 +++++++++++++++ |
| src/libsystemd-network/sd-lldp.c | 37 ++++++++++++++++++++++++++ |
| src/systemd/sd-lldp.h | 4 +++ |
| 3 files changed, 63 insertions(+) |
| |
| diff --git a/src/libsystemd-network/lldp-neighbor.c b/src/libsystemd-network/lldp-neighbor.c |
| index 3bd775158e..5c00205110 100644 |
| --- a/src/libsystemd-network/lldp-neighbor.c |
| +++ b/src/libsystemd-network/lldp-neighbor.c |
| @@ -5,6 +5,7 @@ |
| #include "ether-addr-util.h" |
| #include "hexdecoct.h" |
| #include "in-addr-util.h" |
| +#include "json.h" |
| #include "lldp-internal.h" |
| #include "lldp-neighbor.h" |
| #include "memory-util.h" |
| @@ -777,3 +778,24 @@ _public_ int sd_lldp_neighbor_get_timestamp(sd_lldp_neighbor *n, clockid_t clock |
| *ret = triple_timestamp_by_clock(&n->timestamp, clock); |
| return 0; |
| } |
| + |
| +_public_ int sd_lldp_neighbor_build_json(sd_lldp_neighbor *n, JsonVariant **ret) { |
| + const char *chassis_id = NULL, *port_id = NULL, *system_name = NULL, *port_description = NULL; |
| + uint16_t cc; |
| + bool valid_cc; |
| + |
| + (void) sd_lldp_neighbor_get_chassis_id_as_string(n, &chassis_id); |
| + (void) sd_lldp_neighbor_get_port_id_as_string(n, &port_id); |
| + (void) sd_lldp_neighbor_get_system_name(n, &system_name); |
| + (void) sd_lldp_neighbor_get_port_description(n, &port_description); |
| + |
| + valid_cc = sd_lldp_neighbor_get_enabled_capabilities(n, &cc) >= 0; |
| + |
| + return json_build(ret, JSON_BUILD_OBJECT( |
| + JSON_BUILD_PAIR("neighbor", JSON_BUILD_OBJECT( |
| + JSON_BUILD_PAIR("chassisId", JSON_BUILD_STRING(chassis_id)), |
| + JSON_BUILD_PAIR("systemName", JSON_BUILD_STRING(system_name)), |
| + JSON_BUILD_PAIR_CONDITION(valid_cc, "enabledCapabilities", JSON_BUILD_UNSIGNED(cc)), |
| + JSON_BUILD_PAIR("portId", JSON_BUILD_STRING(port_id)), |
| + JSON_BUILD_PAIR_CONDITION(port_description, "portDescription", JSON_BUILD_STRING(port_description)))))); |
| +} |
| diff --git a/src/libsystemd-network/sd-lldp.c b/src/libsystemd-network/sd-lldp.c |
| index 49aa876a53..2d51992237 100644 |
| --- a/src/libsystemd-network/sd-lldp.c |
| +++ b/src/libsystemd-network/sd-lldp.c |
| @@ -10,6 +10,7 @@ |
| #include "ether-addr-util.h" |
| #include "event-util.h" |
| #include "fd-util.h" |
| +#include "json.h" |
| #include "lldp-internal.h" |
| #include "lldp-neighbor.h" |
| #include "lldp-network.h" |
| @@ -488,6 +489,42 @@ _public_ int sd_lldp_get_neighbors(sd_lldp *lldp, sd_lldp_neighbor ***ret) { |
| return k; |
| } |
| |
| +_public_ int sd_lldp_get_neighbors_json(sd_lldp *lldp, JsonVariant ***ret) { |
| + int i, j, r, n = 0; |
| + sd_lldp_neighbor **l = NULL; |
| + JsonVariant **v = NULL; |
| + |
| + assert_return(lldp, -EINVAL); |
| + assert_return(ret, -EINVAL); |
| + |
| + r = sd_lldp_get_neighbors(lldp, &l); |
| + if (r < 0) |
| + return r; |
| + |
| + n = r; |
| + |
| + v = new0(JsonVariant*, n); |
| + if (!v) |
| + return -ENOMEM; |
| + |
| + for (i = 0; i < n; i++) { |
| + r = sd_lldp_neighbor_build_json(l[i], v + i); |
| + if (r < 0) |
| + goto clear; |
| + } |
| + |
| + *ret = v; |
| + |
| + return n; |
| + |
| +clear: |
| + for (j = 0; j < i; j++) |
| + json_variant_unrefp(v + j); |
| + |
| + free(v); |
| + return r; |
| +} |
| + |
| _public_ int sd_lldp_set_neighbors_max(sd_lldp *lldp, uint64_t m) { |
| assert_return(lldp, -EINVAL); |
| assert_return(m > 0, -EINVAL); |
| diff --git a/src/systemd/sd-lldp.h b/src/systemd/sd-lldp.h |
| index 64047ee817..7594502802 100644 |
| --- a/src/systemd/sd-lldp.h |
| +++ b/src/systemd/sd-lldp.h |
| @@ -28,6 +28,8 @@ |
| |
| _SD_BEGIN_DECLARATIONS; |
| |
| +typedef struct JsonVariant JsonVariant; |
| + |
| /* IEEE 802.1AB-2009 Clause 8: TLV Types */ |
| enum { |
| SD_LLDP_TYPE_END = 0, |
| @@ -156,10 +158,12 @@ int sd_lldp_match_capabilities(sd_lldp *lldp, uint16_t mask); |
| int sd_lldp_set_filter_address(sd_lldp *lldp, const struct ether_addr *address); |
| |
| int sd_lldp_get_neighbors(sd_lldp *lldp, sd_lldp_neighbor ***neighbors); |
| +int sd_lldp_get_neighbors_json(sd_lldp *lldp, JsonVariant ***neighbors); |
| |
| int sd_lldp_neighbor_from_raw(sd_lldp_neighbor **ret, const void *raw, size_t raw_size); |
| sd_lldp_neighbor *sd_lldp_neighbor_ref(sd_lldp_neighbor *n); |
| sd_lldp_neighbor *sd_lldp_neighbor_unref(sd_lldp_neighbor *n); |
| +int sd_lldp_neighbor_build_json(sd_lldp_neighbor *n, JsonVariant **ret); |
| |
| /* Access to LLDP frame metadata */ |
| int sd_lldp_neighbor_get_source_address(sd_lldp_neighbor *n, struct ether_addr* address); |
| -- |
| 2.33.0 |
| |