| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| /*** |
| This file is part of systemd. |
| |
| Copyright (C) 2014 Tom Gundersen |
| Copyright (C) 2014 Susant Sahani |
| |
| systemd is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or |
| (at your option) any later version. |
| |
| systemd 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include <arpa/inet.h> |
| #include <net/ethernet.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include "sd-event.h" |
| #include "sd-lldp.h" |
| |
| #include "alloc-util.h" |
| #include "fd-util.h" |
| #include "lldp-network.h" |
| #include "macro.h" |
| #include "string-util.h" |
| |
| #define TEST_LLDP_PORT "em1" |
| #define TEST_LLDP_TYPE_SYSTEM_NAME "systemd-lldp" |
| #define TEST_LLDP_TYPE_SYSTEM_DESC "systemd-lldp-desc" |
| |
| static int test_fd[2] = { -1, -1 }; |
| static int lldp_handler_calls; |
| |
| int lldp_network_bind_raw_socket(int ifindex) { |
| if (socketpair(AF_UNIX, SOCK_DGRAM | SOCK_NONBLOCK, 0, test_fd) < 0) |
| return -errno; |
| |
| return test_fd[0]; |
| } |
| |
| static void lldp_handler(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n, void *userdata) { |
| lldp_handler_calls++; |
| } |
| |
| static int start_lldp(sd_lldp **lldp, sd_event *e, sd_lldp_callback_t cb, void *cb_data) { |
| int r; |
| |
| r = sd_lldp_new(lldp); |
| if (r < 0) |
| return r; |
| |
| r = sd_lldp_set_ifindex(*lldp, 42); |
| if (r < 0) |
| return r; |
| |
| r = sd_lldp_set_callback(*lldp, cb, cb_data); |
| if (r < 0) |
| return r; |
| |
| r = sd_lldp_attach_event(*lldp, e, 0); |
| if (r < 0) |
| return r; |
| |
| r = sd_lldp_start(*lldp); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int stop_lldp(sd_lldp *lldp) { |
| int r; |
| |
| r = sd_lldp_stop(lldp); |
| if (r < 0) |
| return r; |
| |
| r = sd_lldp_detach_event(lldp); |
| if (r < 0) |
| return r; |
| |
| sd_lldp_unref(lldp); |
| safe_close(test_fd[1]); |
| |
| return 0; |
| } |
| |
| static void test_receive_basic_packet(sd_event *e) { |
| |
| static const uint8_t frame[] = { |
| /* Ethernet header */ |
| 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */ |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */ |
| 0x88, 0xcc, /* Ethertype */ |
| /* LLDP mandatory TLVs */ |
| 0x02, 0x07, 0x04, 0x00, 0x01, 0x02, /* Chassis: MAC, 00:01:02:03:04:05 */ |
| 0x03, 0x04, 0x05, |
| 0x04, 0x04, 0x05, 0x31, 0x2f, 0x33, /* Port: interface name, "1/3" */ |
| 0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */ |
| /* LLDP optional TLVs */ |
| 0x08, 0x04, 0x50, 0x6f, 0x72, 0x74, /* Port Description: "Port" */ |
| 0x0a, 0x03, 0x53, 0x59, 0x53, /* System Name: "SYS" */ |
| 0x0c, 0x04, 0x66, 0x6f, 0x6f, 0x00, /* System Description: "foo" (NULL-terminated) */ |
| 0x00, 0x00 /* End Of LLDPDU */ |
| }; |
| |
| sd_lldp *lldp; |
| sd_lldp_neighbor **neighbors; |
| uint8_t type; |
| const void *data; |
| uint16_t ttl; |
| size_t length; |
| const char *str; |
| |
| lldp_handler_calls = 0; |
| assert_se(start_lldp(&lldp, e, lldp_handler, NULL) == 0); |
| |
| assert_se(write(test_fd[1], frame, sizeof(frame)) == sizeof(frame)); |
| sd_event_run(e, 0); |
| assert_se(lldp_handler_calls == 1); |
| assert_se(sd_lldp_get_neighbors(lldp, &neighbors) == 1); |
| |
| assert_se(sd_lldp_neighbor_get_chassis_id(neighbors[0], &type, &data, &length) == 0); |
| assert_se(type == SD_LLDP_CHASSIS_SUBTYPE_MAC_ADDRESS); |
| assert_se(length == ETH_ALEN); |
| assert_se(!memcmp(data, "\x00\x01\x02\x03\x04\x05", ETH_ALEN)); |
| |
| assert_se(sd_lldp_neighbor_get_port_id(neighbors[0], &type, &data, &length) == 0); |
| assert_se(type == SD_LLDP_PORT_SUBTYPE_INTERFACE_NAME); |
| assert_se(length == 3); |
| assert_se(strneq((char *) data, "1/3", 3)); |
| |
| assert_se(sd_lldp_neighbor_get_port_description(neighbors[0], &str) == 0); |
| assert_se(streq(str, "Port")); |
| |
| assert_se(sd_lldp_neighbor_get_system_name(neighbors[0], &str) == 0); |
| assert_se(streq(str, "SYS")); |
| |
| assert_se(sd_lldp_neighbor_get_system_description(neighbors[0], &str) == 0); |
| assert_se(streq(str, "foo")); |
| |
| assert_se(sd_lldp_neighbor_get_ttl(neighbors[0], &ttl) == 0); |
| assert_se(ttl == 120); |
| |
| sd_lldp_neighbor_unref(neighbors[0]); |
| free(neighbors); |
| |
| assert_se(stop_lldp(lldp) == 0); |
| } |
| |
| static void test_receive_incomplete_packet(sd_event *e) { |
| sd_lldp *lldp; |
| sd_lldp_neighbor **neighbors; |
| uint8_t frame[] = { |
| /* Ethernet header */ |
| 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */ |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */ |
| 0x88, 0xcc, /* Ethertype */ |
| /* LLDP mandatory TLVs */ |
| 0x02, 0x07, 0x04, 0x00, 0x01, 0x02, /* Chassis: MAC, 00:01:02:03:04:05 */ |
| 0x03, 0x04, 0x05, |
| 0x04, 0x04, 0x05, 0x31, 0x2f, 0x33, /* Port: interface name, "1/3" */ |
| /* Missing TTL */ |
| 0x00, 0x00 /* End Of LLDPDU */ |
| }; |
| |
| lldp_handler_calls = 0; |
| assert_se(start_lldp(&lldp, e, lldp_handler, NULL) == 0); |
| |
| assert_se(write(test_fd[1], frame, sizeof(frame)) == sizeof(frame)); |
| sd_event_run(e, 0); |
| assert_se(lldp_handler_calls == 0); |
| assert_se(sd_lldp_get_neighbors(lldp, &neighbors) == 0); |
| |
| assert_se(stop_lldp(lldp) == 0); |
| } |
| |
| static void test_receive_oui_packet(sd_event *e) { |
| sd_lldp *lldp; |
| sd_lldp_neighbor **neighbors; |
| uint8_t frame[] = { |
| /* Ethernet header */ |
| 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */ |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */ |
| 0x88, 0xcc, /* Ethertype */ |
| /* LLDP mandatory TLVs */ |
| 0x02, 0x07, 0x04, 0x00, 0x01, 0x02, /* Chassis: MAC, 00:01:02:03:04:05 */ |
| 0x03, 0x04, 0x05, |
| 0x04, 0x04, 0x05, 0x31, 0x2f, 0x33, /* Port TLV: interface name, "1/3" */ |
| 0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */ |
| /* LLDP optional TLVs */ |
| 0xfe, 0x06, 0x00, 0x80, 0xc2, 0x01, /* Port VLAN ID: 0x1234 */ |
| 0x12, 0x34, |
| 0xfe, 0x07, 0x00, 0x80, 0xc2, 0x02, /* Port and protocol: flag 1, PPVID 0x7788 */ |
| 0x01, 0x77, 0x88, |
| 0xfe, 0x0d, 0x00, 0x80, 0xc2, 0x03, /* VLAN Name: ID 0x1234, name "Vlan51" */ |
| 0x12, 0x34, 0x06, 0x56, 0x6c, 0x61, |
| 0x6e, 0x35, 0x31, |
| 0xfe, 0x06, 0x00, 0x80, 0xc2, 0x06, /* Management VID: 0x0102 */ |
| 0x01, 0x02, |
| 0xfe, 0x09, 0x00, 0x80, 0xc2, 0x07, /* Link aggregation: status 1, ID 0x00140012 */ |
| 0x01, 0x00, 0x14, 0x00, 0x12, |
| 0x00, 0x00 /* End of LLDPDU */ |
| }; |
| |
| lldp_handler_calls = 0; |
| assert_se(start_lldp(&lldp, e, lldp_handler, NULL) == 0); |
| |
| assert_se(write(test_fd[1], frame, sizeof(frame)) == sizeof(frame)); |
| sd_event_run(e, 0); |
| assert_se(lldp_handler_calls == 1); |
| assert_se(sd_lldp_get_neighbors(lldp, &neighbors) == 1); |
| |
| assert_se(sd_lldp_neighbor_tlv_rewind(neighbors[0]) >= 0); |
| assert_se(sd_lldp_neighbor_tlv_is_type(neighbors[0], SD_LLDP_TYPE_CHASSIS_ID) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_type(neighbors[0], SD_LLDP_TYPE_PORT_ID) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_type(neighbors[0], SD_LLDP_TYPE_TTL) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors[0], SD_LLDP_OUI_802_1, SD_LLDP_OUI_802_1_SUBTYPE_PORT_VLAN_ID) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors[0], SD_LLDP_OUI_802_1, SD_LLDP_OUI_802_1_SUBTYPE_PORT_PROTOCOL_VLAN_ID) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors[0], SD_LLDP_OUI_802_1, SD_LLDP_OUI_802_1_SUBTYPE_VLAN_NAME) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors[0], SD_LLDP_OUI_802_1, SD_LLDP_OUI_802_1_SUBTYPE_MANAGEMENT_VID) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors[0], SD_LLDP_OUI_802_1, SD_LLDP_OUI_802_1_SUBTYPE_LINK_AGGREGATION) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) > 0); |
| assert_se(sd_lldp_neighbor_tlv_is_type(neighbors[0], SD_LLDP_TYPE_END) > 0); |
| assert_se(sd_lldp_neighbor_tlv_next(neighbors[0]) == 0); |
| |
| sd_lldp_neighbor_unref(neighbors[0]); |
| free(neighbors); |
| |
| assert_se(stop_lldp(lldp) == 0); |
| } |
| |
| int main(int argc, char *argv[]) { |
| _cleanup_(sd_event_unrefp) sd_event *e = NULL; |
| |
| log_set_max_level(LOG_DEBUG); |
| |
| /* LLDP reception tests */ |
| assert_se(sd_event_new(&e) == 0); |
| test_receive_basic_packet(e); |
| test_receive_incomplete_packet(e); |
| test_receive_oui_packet(e); |
| |
| return 0; |
| } |